EP0507671A1 - Device for pneumatic feeding of bulk powdered material, especially sand - Google Patents

Device for pneumatic feeding of bulk powdered material, especially sand Download PDF

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Publication number
EP0507671A1
EP0507671A1 EP92400896A EP92400896A EP0507671A1 EP 0507671 A1 EP0507671 A1 EP 0507671A1 EP 92400896 A EP92400896 A EP 92400896A EP 92400896 A EP92400896 A EP 92400896A EP 0507671 A1 EP0507671 A1 EP 0507671A1
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EP
European Patent Office
Prior art keywords
sand
cable
distribution device
pipe
rod
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92400896A
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German (de)
French (fr)
Inventor
Jean-Louis Fleurigeon
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Engineering Transport Pneumatique Mecanique(Etpm)
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Engineering Transport Pneumatique Mecanique(Etpm)
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Application filed by Engineering Transport Pneumatique Mecanique(Etpm) filed Critical Engineering Transport Pneumatique Mecanique(Etpm)
Publication of EP0507671A1 publication Critical patent/EP0507671A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K11/00—Serving peculiar to locomotives, e.g. filling with, or emptying of, water, sand, or the like at the depots

Definitions

  • the present invention relates to a device intended to ensure the pneumatic distribution of powdery products in bulk, in particular sand, in particular for sandblasting installations for vehicle tracks on rails.
  • a silo is used for the storage of sand which feeds distribution hoppers under which are arranged one or more telescopic or flexible distribution rods which are connected to the intake opening of the sand pit.
  • the sand is introduced under pressure into this sand pit and a dedusting system is provided making it possible to recover the dust emitted during the introduction of the sand.
  • These facilities complete sandblasting (such as that claimed in the Austrian patent n ° 333 843) do not particularly target the automatic closing means present on the product distribution pipe, the obturation is generally manual and carried out by a conventional valve.
  • the present invention has therefore set itself the objective of providing a device, in particular for distributing sand, which does not have the above-mentioned drawbacks of the devices currently produced.
  • the subject of the present invention is a device for pneumatically distributing powdery products in bulk, in particular sand, intended in particular for sandblasting installations for tracks of vehicles on rails of the type comprising a storage silo containing the sand to be to distribute and a system of distribution rods provided with a nozzle designed so as to be introduced into the intake orifice of the sand pit of said vehicle and of means ensuring dust removal,
  • this device being characterized in that said rod is mounted on a trigger pot in which the supply of pressurized sand delivered from said silo takes place and in that the tip of said rod is produced in the form of a pistol grip comprising a central supply of pressurized sand, a dedusting pipe, a second pipe ending in a feeler tube inserted in the intake opening of the sand pit and in the what prevails an overpressure, this feeler tube being connected to a pressure switch ensuring the control of the inlet valve of the sand under pressure.
  • said pressure sand inlet valve in the pistol grip is positioned on the latter and is controlled, from said pressure switch via a pneumatic line provided on said pistol grip.
  • the expansion pot on which said rod is mounted is suspended from the end of a cable which is returned by a return means which can for example be produced in the form of a counterweight, the pulleys and drums on which the cables of the expansion pot and the counterweight are wound being placed on a gantry whose head carrying said pulleys and drums can be rotated 360 °.
  • the pneumatic distribution device comprises at least one distribution rod designated as a whole by the reference 10, which is provided at its end with a nozzle. forming a pistol grip, designated as a whole by the reference 12 and which is designed so that it can be introduced into the sand intake hole of the sand plates of vehicles moving on rails.
  • This distribution rod 10 is supplied with pressurized sand using a pipe 14 which is itself supplied from a silo (not shown in the drawing).
  • a valve 16 is interposed on the supply line 14.
  • the pistol grip 12 has been shown in detail in FIGS. 2 and 3. It has a central inlet 20 of pressurized sand and a lateral dedusting pipe 22. This pipe 22 is placed under vacuum so as to ensure the suction of the dust. which escape from the opening of the sand pit during filling. Such a dedusting system is known, and therefore it will not be described in detail.
  • a pneumatically operated valve 24 preferably, as will be described below. As seen in Figures 2 and 3 this valve 24 is integrated in the general configuration of the pistol grip according to the present invention.
  • the present invention provides means making it possible to detect the instant when the sandpit is full, so as to avoid any overflowing of sand by pushing the latter out of the intake opening of the sand pit.
  • These means are produced in the form of lateral piping 26 which ends in a feeler tube 26 ′, this feeler tube being designed so that it can be introduced into the orifice of the sand pit at the same time as the end piece of the arrival of the sand supply 20. An overpressure is maintained in the piping 26.
  • valve 24 provided for closure on the pistol grip is controlled after valve 16 is closed, placed as indicated above, on the pipe 14 bringing the sand under pressure to the distribution pipe 10.
  • FIG. 1 we can see at 28 the pressure supply line for sand under pressure, this pipe being mounted on an expansion tank 30 making it possible to reduce the inlet pressure of the sand into the pistol grip 12, the pipe 34 of supply of pressurized sand from line 14 and the silo (not shown) being connected to this expansion tank 30.
  • FIG. 1 there is shown at 32 a pipe grouping together the supply pipe for the dedusting tube 22 , the supply pipe of the feeler tube 26, 26 ′ and the pneumatic control pipe of the valve 24 from its pressure switch.
  • the invention provides means making it possible to avoid cluttering of the sand distribution areas by the distribution rods.
  • Figures 4 to 6 which illustrate, in detail, the means thus provided by the invention.
  • the expansion pot 30 is fixed to the end of a cable 36 which passes over a pulley 38, with a horizontal axis, mounted in the rotary head 40 of a gantry, the vertical support tube 42 of which is positioned between the tracks of the vehicles on rails whose sand pits are supplied by the device according to the invention.
  • the other end of the cable 36 is wound on the groove 44 of a double-grooved drum 46.
  • On the second groove 48 of this drum 46 is wound a cable 50 at the end of which is mounted a counterweight 52, serving of return means to the cable 36 on which the expansion pot 30 is fixed. It is well understood without departing from the scope of the present invention, consider any other return means for the cable 36.
  • the double-grooved drum 46 can rotate around a horizontal axis provided in the head 40 and the counterweight 52 is guided inside a tube 54 which is mounted on the head 40 of the gantry.
  • the head 40 of the gantry can rotate 360 °.
  • the distribution rods can be positioned in any location, on either side of a horizontal axis which, in the application mentioned here, is parallel to the tracks on which the vehicles on rails move, which allows to feed several sand pits belonging to different vehicles parked on different tracks between which is placed the device object of the present invention.
  • the head 40 of the gantry can therefore pivot around the vertical axis of the support tube 42.
  • the rod 10 is recalled by the return means constituted here by the counterweight 52 and, at rest the pipes of this rod are held against the support tube 42 of the gantry which avoids any congestion of the areas power supply.
  • Figure 1 there is shown in broken lines the position of the rod 10 and its pistol grip 12 at the end of the stroke. It is noted that the invention makes it possible to supply sand pits located at a relatively large distance from the distribution gantry 40-42 which makes it possible to successively supply several sand pits with a single rod while avoiding clutter in the distribution area. Furthermore, the invention makes it possible to avoid any spillage of sand during filling of the sand pits thanks to the filling detection means described above.
  • the present invention is not limited to the embodiment and the application mentioned above but that it encompasses all variants thereof.
  • the invention is not limited to the application described and mentioned above, it can indeed be applied in all cases where it is desired to ensure a controlled pneumatic distribution of pulverulent products whatever nature.

Abstract

Device for pneumatically delivering bulk pulverulent products, especially sand, intended in particular for sand-blasting installations for vehicles on rails, of the type including a storage bin containing the sand to be delivered and a system of delivery hoses fitted with a nozzle designed so as to be inserted into the inlet orifice of the sand box (sander) of the said vehicle and means for removing dust, the device being characterised in that the said hose (10) is mounted on a pressure-reduction vessel (30) into which the pressurised sand flows, supplied from the said bin, and in that the nozzle of the said hose is made in the form of a gun handle (12) which includes a central pressurised-sand inlet, a dust-removing pipe (22), a second pipe (26) terminating in a sensor tube (26') inserted into the inlet orifice of the sand box (sander) and in which an overpressure prevails, this sensor tube being connected to a pressure-sensitive device controlling the pressurised-sand inlet valve (24). <IMAGE>

Description

La présente invention a pour objet un dispositif destiné à assurer la distribution pneumatique de produits pulvérulents en vrac, notamment de sable en particulier pour des installations de sablage des voies de roulement de véhicules sur rails.The present invention relates to a device intended to ensure the pneumatic distribution of powdery products in bulk, in particular sand, in particular for sandblasting installations for vehicle tracks on rails.

On sait que les véhicules sur rails et notamment les motrices comportent des boîtes à sable, généralement dénommées sablières, à partir desquelles du sable est injecté devant les roues motrices, notamment lors du freinage ou de l'accélération. Il existe donc à l'heure actuelle des installations qui permettent d'alimenter sous pression de telles sablières à partir de cuves contenant le sable.It is known that vehicles on rails and in particular the driving ones comprise sand boxes, generally called sand pits, from which sand is injected in front of the driving wheels, in particular during braking or acceleration. At the present time, therefore, there are installations which make it possible to supply such sand pits under pressure from tanks containing the sand.

Dans ces installations connues on utilise un silo pour le stockage du sable qui alimente des trémies de distribution sous lesquelles sont disposées une ou plusieurs cannes de distribution télescopiques ou souples que l'on raccorde sur l'orifice d'admission de la sablière. Le sable est introduit sous pression dans cette sablière et l'on prévoit un système de dépoussiérage permettant de récupérer les poussières émises lors de l'introduction du sable. Ces installations complètes de sablage (comme celle revendiquée dans le brevet autrichien n° 333 843) ne visent pas particulièrement les moyens de fermeture automatique présents sur la canalisation de distribution de produit, l'obturation y est en général manuelle et réalisée par une vanne classique.In these known installations, a silo is used for the storage of sand which feeds distribution hoppers under which are arranged one or more telescopic or flexible distribution rods which are connected to the intake opening of the sand pit. The sand is introduced under pressure into this sand pit and a dedusting system is provided making it possible to recover the dust emitted during the introduction of the sand. These facilities complete sandblasting (such as that claimed in the Austrian patent n ° 333 843) do not particularly target the automatic closing means present on the product distribution pipe, the obturation is generally manual and carried out by a conventional valve.

On connaît, par ailleurs, des systèmes d'obturation commandés (cf brevet US n° 4 497 350) qui comprennent au moins deux dispositifs couplés de détection de pression fluctuants avec le niveau de produit présent dans le réservoir.Known, moreover, controlled closure systems (cf. US Pat. No. 4,497,350) which comprise at least two coupled pressure detection devices fluctuating with the level of product present in the reservoir.

Les installations actuellement réalisées présentent deux inconvénients majeurs :

  • 1° - Elles ne comportent aucun moyen unique, fiable ou automatique, permettant à l'utilisateur de détecter le moment où la sablière est pleine, ce qui entraîne inévitablement un débordement du sable de cette sablière, le sable en excès ainsi déversé se répandant entre les voies, ce qui nécessite son enlèvement périodique ;
  • 2° - Etant donné qu'il est nécessaire de prévoir plusieurs cannes de distribution afin d'assurer une alimentation simultanée de plusieurs sablières, les aires où sont positionnées les installations actuelles de distribution pneumatique de sable sont très encombrées par les systèmes de distribution, ce qui en complique l'accès et contribue à nuire à une distribution rapide du sable sous pression dans les sablières.
The installations currently carried out have two major drawbacks:
  • 1 ° - They do not include any unique, reliable or automatic means, allowing the user to detect when the sandpit is full, which inevitably leads to an overflow of the sand from this sandpit, the excess sand thus poured spreading between tracks, which requires its periodic removal;
  • 2 ° - Given that it is necessary to provide several distribution rods in order to ensure a simultaneous supply of several sand pits, the areas where the current pneumatic sand distribution installations are positioned are very congested by the distribution systems, this which complicates access and contributes to hindering the rapid distribution of pressurized sand in the sand pits.

La présente invention s'est donc fixé pour objectif d'apporter un dispositif de distribution notamment de sable ne présentant pas les inconvénients mentionnés ci-dessus des dispositifs actuellement réalisés.The present invention has therefore set itself the objective of providing a device, in particular for distributing sand, which does not have the above-mentioned drawbacks of the devices currently produced.

En conséquence, la présente invention a pour objet un dispositif de distribution pneumatique de produits pulvérulents en vrac, notamment de sable, destiné en particulier aux installations de sablage des voies de roulement de véhicules sur rails du type comportant un silo de stockage contenant le sable à distribuer et un système de cannes de distribution munies d'un embout conçu de façon à être introduit dans l'orifice d'admission de la sablière dudit véhicule et de moyens assurant le dépoussiérage, ce dispositif étant caractérisé en ce que ladite canne est montée sur un pot de détente dans lequel s'effectue l'amenée du sable sous pression délivré à partir dudit silo et en ce que l'embout de ladite canne est réalisé sous la forme d'une poignée pistolet comportant une arrivée centrale de sable sous pression, une tuyauterie de dépoussiérage, une seconde tuyauterie se terminant par un tube palpeur introduit dans l'orifice d'admission de la sablière et dans laquelle règne une surpression, ce tube palpeur étant relié à un pressostat assurant la commande de la vanne d'admission du sable sous pression.Consequently, the subject of the present invention is a device for pneumatically distributing powdery products in bulk, in particular sand, intended in particular for sandblasting installations for tracks of vehicles on rails of the type comprising a storage silo containing the sand to be to distribute and a system of distribution rods provided with a nozzle designed so as to be introduced into the intake orifice of the sand pit of said vehicle and of means ensuring dust removal, this device being characterized in that said rod is mounted on a trigger pot in which the supply of pressurized sand delivered from said silo takes place and in that the tip of said rod is produced in the form of a pistol grip comprising a central supply of pressurized sand, a dedusting pipe, a second pipe ending in a feeler tube inserted in the intake opening of the sand pit and in the what prevails an overpressure, this feeler tube being connected to a pressure switch ensuring the control of the inlet valve of the sand under pressure.

Selon la présente invention ladite vanne d'admission du sable sous pression dans la poignée pistolet est positionnée sur cette dernière et elle est commandée, à partir dudit pressostat par l'intermédiaire d'une conduite pneumatique prévue sur ladite poignée pistolet.According to the present invention, said pressure sand inlet valve in the pistol grip is positioned on the latter and is controlled, from said pressure switch via a pneumatic line provided on said pistol grip.

Selon une autre caractéristique de la présente invention le pot de détente sur lequel est montée ladite canne est suspendu à l'extrémité d'un câble qui est rappelé par un moyen de rappel pouvant être par exemple réalisé sous la forme d'un contrepoids, les poulies et tambours sur lesquels s'enroulent les câbles du pot de détente et du contrepoids étant placés sur un portique dont la tête portant lesdites poulies et tambours peut subir une rotation de 360°.According to another characteristic of the present invention, the expansion pot on which said rod is mounted is suspended from the end of a cable which is returned by a return means which can for example be produced in the form of a counterweight, the pulleys and drums on which the cables of the expansion pot and the counterweight are wound being placed on a gantry whose head carrying said pulleys and drums can be rotated 360 °.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après en référence aux dessins annexés qui en illustrent un exemple de réalisation et d'application dépourvu de tout caractère limitatif. Sur les dessins :

  • La figure 1 est une vue d'ensemble schématique représentant le dispositif selon la présente invention, en élévation latérale ;
  • La figure 2 est une vue en coupe selon 2-2 de la figure 3 représentant la poignée pistolet du dispositif selon la présente invention ;
  • La figure 3 est une vue en élévation frontale de la figure 2 ;
  • La figure 4 est une vue partielle à plus grande échelle, en coupe axiale verticale partielle selon 4-4 de la figure 5 illustrant la tête du portique sur laquelle sont montées les cannes de distribution du dispositif selon l'invention ;
  • La figure 5 est une vue en plan avec arrachement de la figure 4 et
  • La figure 6 est une vue partielle, en élévation frontale, représentant le tambour sur lequel sont enroulés les câbles respectivement du contrepoids et du pot de détente de la canne de distribution.
Other characteristics and advantages of the present invention will emerge from the description given below with reference to the appended drawings which illustrate an example of embodiment and application thereof which is devoid of any limiting character. In the drawings:
  • Figure 1 is a schematic overview showing the device according to the present invention, in side elevation;
  • Figure 2 is a sectional view along 2-2 of Figure 3 showing the pistol grip of the device according to the present invention;
  • Figure 3 is a front elevational view of Figure 2;
  • Figure 4 is a partial view on a larger scale, in partial vertical axial section along 4-4 of Figure 5 illustrating the head of the gantry on which are mounted the distribution rods of the device according to the invention;
  • Figure 5 is a cutaway plan view of Figure 4 and
  • Figure 6 is a partial view, in front elevation, showing the drum on which the cables are wound respectively of the counterweight and the expansion pot of the distribution rod.

En se référant aux dessins et notamment aux figures 1 à 3 on voit que le dispositif de distribution pneumatique selon la présente invention comporte au moins une canne de distribution désignée dans son ensemble par la référence 10, qui est munie à son extrémité d'un embout formant poignée pistolet, désigné dans son ensemble par la référence 12 et qui est conçue de façon à pouvoir être introduit dans l'orifice d'admission du sable des sablières de véhicules se déplacant sur rails. Cette canne de distribution 10 est alimentée en sable sous pression à l'aide d'une conduite 14 elle-même alimentée à partir d'un silo (non représenté sur le dessin). Une vanne 16 est interposée sur la conduite d'alimentation 14.Referring to the drawings and in particular to Figures 1 to 3 it can be seen that the pneumatic distribution device according to the present invention comprises at least one distribution rod designated as a whole by the reference 10, which is provided at its end with a nozzle. forming a pistol grip, designated as a whole by the reference 12 and which is designed so that it can be introduced into the sand intake hole of the sand plates of vehicles moving on rails. This distribution rod 10 is supplied with pressurized sand using a pipe 14 which is itself supplied from a silo (not shown in the drawing). A valve 16 is interposed on the supply line 14.

La poignée pistolet 12 a été représentée en détail sur les figures 2 et 3. Elle comporte une arrivée centrale 20 de sable sous pression et une tuyauterie latérale de dépoussiérage 22. Cette tuyauterie 22 est mise en dépression de façon à assurer l'aspiration des poussières qui s'échappent de l'orifice de la sablière lors du remplissage. Un tel système de dépoussiérage est connu, et en conséquence il ne sera pas décrit en détail. Sur l'arrivée centrale de sable sous pression 20 on prévoit, selon la présente invention, une vanne 24 à commande pneumatique de préférence, comme on le décrira ci-après. Ainsi qu'on le voit sur les figures 2 et 3 cette vanne 24 est intégrée dans la configuration générale de la poignée pistolet selon la présente invention.The pistol grip 12 has been shown in detail in FIGS. 2 and 3. It has a central inlet 20 of pressurized sand and a lateral dedusting pipe 22. This pipe 22 is placed under vacuum so as to ensure the suction of the dust. which escape from the opening of the sand pit during filling. Such a dedusting system is known, and therefore it will not be described in detail. On the central pressurized sand inlet 20 there is provided, according to the present invention, a pneumatically operated valve 24 preferably, as will be described below. As seen in Figures 2 and 3 this valve 24 is integrated in the general configuration of the pistol grip according to the present invention.

La présente invention prévoit des moyens permettant de détecter l'instant où la sablière est pleine, de façon à éviter tout débordement de sable par refoulement de ce dernier hors de l'orifice d'admission de la sablière. Ces moyens sont réalisés sous la forme d'une tuyauterie latérale 26 qui se termine par un tube palpeur 26′, ce tube palpeur étant conçu de façon à pouvoir être introduit dans l'orifice de la sablière en même temps que l'embout de l'arrivée de l'alimentation en sable 20. On maintient une surpression dans la tuyauterie 26. Ainsi, lorsque la sablière est pleine, le sable remplissant cette dernière obture l'extrémité du tube palpeur 26′, ce qui produit une augmentation de pression dans la tuyauterie 26, cette augmentation de pression actionnant un pressostat (non visible sur le dessin) qui actionne la commande de la vanne 24 interrompant ainsi l'alimentation en sable sous pression de la conduite centrale 20. Ainsi, grâce à l'invention, on évite tout débordement de sable hors de la sablière, lorsque cette dernière est remplie.The present invention provides means making it possible to detect the instant when the sandpit is full, so as to avoid any overflowing of sand by pushing the latter out of the intake opening of the sand pit. These means are produced in the form of lateral piping 26 which ends in a feeler tube 26 ′, this feeler tube being designed so that it can be introduced into the orifice of the sand pit at the same time as the end piece of the arrival of the sand supply 20. An overpressure is maintained in the piping 26. Thus, when the sandpit is full, the sand filling the latter closes the end of the feeler tube 26 ′, which produces an increase in pressure in piping 26, this pressure increase actuating a pressure switch (not visible in the drawing) which actuates the control of the valve 24 thus interrupting the supply of pressurized sand to the central pipe 20. Thus, thanks to the invention, any sand overflow is avoided out of the sandpit, when the latter is full.

Selon l'invention, pour éviter un maintien sous pression de la canne d'alimentation, la commande de la fermeture de la vanne 24 prévue sur la poignée pistolet s'effectue après la fermeture de la vanne 16, placée comme indiqué ci-dessus, sur la conduite 14 amenant le sable sous pression à la canne de distribution 10.According to the invention, in order to avoid keeping the supply rod under pressure, the valve 24 provided for closure on the pistol grip is controlled after valve 16 is closed, placed as indicated above, on the pipe 14 bringing the sand under pressure to the distribution pipe 10.

Sur la figure 1 on peut voir en 28 la conduite d'alimentation en sable sous pression, cette conduite étant montée sur un pot de détente 30 permettant de réduire la pression d'admission du sable dans la poignée pistolet 12, la conduite 34 d'alimentation en sable sous pression à partir de la conduite 14 et du silo (non représenté) étant branchée sur ce pot de détente 30. Sur cette même figure 1 on a représenté en 32 une conduite regroupant la tuyauterie d'alimentation du tube de dépoussiérage 22, la tuyauterie d'alimentation du tube palpeur 26, 26′ et la tuyauterie de commande pneumatique de la vanne 24 à partir de son pressostat.In FIG. 1 we can see at 28 the pressure supply line for sand under pressure, this pipe being mounted on an expansion tank 30 making it possible to reduce the inlet pressure of the sand into the pistol grip 12, the pipe 34 of supply of pressurized sand from line 14 and the silo (not shown) being connected to this expansion tank 30. In this same FIG. 1, there is shown at 32 a pipe grouping together the supply pipe for the dedusting tube 22 , the supply pipe of the feeler tube 26, 26 ′ and the pneumatic control pipe of the valve 24 from its pressure switch.

Ainsi qu'on l'a mentionné ci-dessus, l'invention prévoit des moyens permettant d'éviter l'encombrement des aires de distribution de sable par les cannes de distribution. On se réfère maintenant aux figures 4 à 6 qui illustrent, de façon détaillée, les moyens ainsi prévus par l'invention.As mentioned above, the invention provides means making it possible to avoid cluttering of the sand distribution areas by the distribution rods. Referring now to Figures 4 to 6 which illustrate, in detail, the means thus provided by the invention.

Comme on le voit sur les dessins le pot de détente 30 est fixé à l'extrémité d'un câble 36 qui passe sur une poulie 38, à axe horizontal, montée dans la tête rotative 40 d'un portique dont le tube support vertical 42 est positionné entre les voies de roulement des véhicules sur rails dont les sablières sont alimentées par le dispositif selon l'invention. L'autre extrémité du câble 36 vient s'enrouler sur la gorge 44 d' un tambour à double gorge 46. Sur la seconde gorge 48 de ce tambour 46 est enroulé un câble 50 à l'extrémité duquel est monté un contrepoids 52 , servant de moyen de rappel au câble 36 sur lequel est fixé le pot de détente 30. On peut bien entenu sans sortir du cadre de la présente invention, envisager tout autre moyen de rappel pour le cable 36. Le tambour à double gorge 46 peut tourner autour d'un axe horizontal prévu dans la tête 40 et le contrepoids 52 est guidé à l'intérieur d'un tube 54 qui est monté sur la tête 40 du portique.As can be seen in the drawings, the expansion pot 30 is fixed to the end of a cable 36 which passes over a pulley 38, with a horizontal axis, mounted in the rotary head 40 of a gantry, the vertical support tube 42 of which is positioned between the tracks of the vehicles on rails whose sand pits are supplied by the device according to the invention. The other end of the cable 36 is wound on the groove 44 of a double-grooved drum 46. On the second groove 48 of this drum 46 is wound a cable 50 at the end of which is mounted a counterweight 52, serving of return means to the cable 36 on which the expansion pot 30 is fixed. It is well understood without departing from the scope of the present invention, consider any other return means for the cable 36. The double-grooved drum 46 can rotate around a horizontal axis provided in the head 40 and the counterweight 52 is guided inside a tube 54 which is mounted on the head 40 of the gantry.

Ainsi qu'on la indiqué ci-dessus la tête 40 du portique peut tourner de 360°. Ainsi les cannes de distribution peuvent être positionnées en n'importe quel emplacement, de part et d'autre d'un axe horizontal qui, dans l'application mentionnée ici, est parallèle aux voies de roulement sur lesquelles se déplacent les véhicules sur rails, ce qui permet d'alimenter plusieurs sablières appartenant à différents véhicules stationnés sur des voies de roulement différentes entre lesquelles est placé le dispositif objet de la présente invention. Dans ce but, la tête 40 du portique peut donc tourillonner autour de l'axe vertical du tube support 42.As indicated above, the head 40 of the gantry can rotate 360 °. Thus the distribution rods can be positioned in any location, on either side of a horizontal axis which, in the application mentioned here, is parallel to the tracks on which the vehicles on rails move, which allows to feed several sand pits belonging to different vehicles parked on different tracks between which is placed the device object of the present invention. For this purpose, the head 40 of the gantry can therefore pivot around the vertical axis of the support tube 42.

Grâce à la disposition décrite ci-dessus, la canne 10 est rappelée par le moyen de rappel constitué ici par le contrepoids 52 et, au repos les tuyauteries de cette canne sont maintenues contre le tube support 42 du portique ce qui évite tout encombrement des aires d'alimentation. Sur la figure 1 on a représenté en traits mixtes la position de la canne 10 et de sa poignée pistolet 12 en fin de course. On remarque que l'invention permet d'alimenter des sablières situées à une distance relativement importante du portique de distribution 40-42 ce qui permet d'assurer successivement l'alimentation de plusieurs sablières à l'aide d'une seule canne tout en évitant un encombrement de l'aire de distribution. Par ailleurs l'invention permet d'éviter tout déversement de sable lors du remplissage des sablières grâce aux moyens de détection de remplissage décrits ci-dessus.Thanks to the arrangement described above, the rod 10 is recalled by the return means constituted here by the counterweight 52 and, at rest the pipes of this rod are held against the support tube 42 of the gantry which avoids any congestion of the areas power supply. In Figure 1 there is shown in broken lines the position of the rod 10 and its pistol grip 12 at the end of the stroke. It is noted that the invention makes it possible to supply sand pits located at a relatively large distance from the distribution gantry 40-42 which makes it possible to successively supply several sand pits with a single rod while avoiding clutter in the distribution area. Furthermore, the invention makes it possible to avoid any spillage of sand during filling of the sand pits thanks to the filling detection means described above.

Il demeure bien entendu que la présente invention n'est pas limitée à l'exemple de réalisation et à l'application mentionnée ci-dessus mais qu'elle en englobe toutes les variantes. C'est ainsi que notamment on peut prévoir plusieurs cannes de distribution avec leur pistolet et leur système de rappel respectif constitué par exemple par un contrepoids, montées sur un même portique. De même, l'invention n'est pas limitée à l'application décrite et mentionnée ci-dessus, elle peut en effet s'appliquer dans tous les cas où l'on veut assurer une distribution pneumatique contrôlée de produits pulvérulents quelqu'en soit la nature.It remains to be understood that the present invention is not limited to the embodiment and the application mentioned above but that it encompasses all variants thereof. Thus, in particular, it is possible to provide several distribution rods with their pistol and their respective return system constituted for example by a counterweight, mounted on the same gantry. Likewise, the invention is not limited to the application described and mentioned above, it can indeed be applied in all cases where it is desired to ensure a controlled pneumatic distribution of pulverulent products whatever nature.

Claims (5)

1 - Dispositif de distribution pneumatique de produits pulvérulents en vrac, notamment de sable, destiné en particulier aux installations de sablage de véhicules sur rails du type comportant un silo de stockage contenant le sable à distribuer et un système de cannes de distribution munies d'un embout conçu de façon à être introduit dans l'orifice d'admission de la sablière dudit véhicule et de moyens assurant le dépoussiérage, ce dispositif étant caractérisé en ce que ladite canne (10) est montée sur un pot de détente (30) dans lequel s'effectue l'amenée du sable sous pression délivré à partir dudit silo et en ce que l'embout de ladite canne est réalisé sous la forme d'une poignée pistolet (12) comportant une arrivée centrale (20) de sable sous pression, une tuyauterie de dépoussiérage (22), une seconde tuyauterie (26) se terminant par un tube palpeur (26′) introduit dans l'orifice d'admission de la sablière et dans laquelle règne une surpression, ce tube palpeur étant relié à un pressostat assurant la commande de la vanne d'admission (24) du sable sous pression. 1 - Pneumatic distribution device for powdery products in bulk, in particular sand, intended in particular for the sanding installations of vehicles on rails of the type comprising a storage silo containing the sand to be distributed and a system of distribution rods provided with a nozzle designed so as to be introduced into the intake opening of the sandpit of said vehicle and of means ensuring dust removal, this device being characterized in that said rod (10) is mounted on an expansion pot (30) in which the pressurized sand delivered from said silo is brought in and in that the end of said rod is produced in the form of a pistol grip (12) comprising a central inlet (20) of pressurized sand, a dedusting pipe (22), a second pipe (26) ending in a feeler tube (26 ′) introduced into the intake opening of the sand pit and in which there is an overpressure, this tub e probe being connected to a pressure switch ensuring control of the inlet valve (24) of pressurized sand. 2 - Dispositif de distribution pneumatique selon la revendication 1 caractérisé en ce que ladite vanne d'admission (24) du sable sous pression dans la poignée pistolet (12) est positionnée sur cette dernière et elle est commandée, à partir dudit pressostat par l'intermédiaire d'une conduite pneumatique prévue sur ladite poignée pistolet. 2 - pneumatic distribution device according to claim 1 characterized in that said inlet valve (24) of the sand under pressure in the pistol grip (12) is positioned on the latter and it is controlled, from said pressure switch by the through a pneumatic line provided on said pistol grip. 3 - Dispositif de distribution pneumatique selon l'une des revendications 1 et 2 caractérisé en ce que le pot de détente (30) sur lequel est montée ladite canne (10) est suspendu à l'extrémité d'un câble (36) qui est muni d'un moyen de rappel (52), les poulies et tambours sur lesquels s'enroule le câble du pot de détente et ledit moyen de rappel étant placés sur un portique (40,42) dont la tête (40) portant lesdits poulies et tambours et le moyen de rappel peut subir une rotation de 360° de façon que les cannes puissent alimenter des sablières appartenant à différents véhicules situés sur des voies de roulement différentes. 3 - pneumatic distribution device according to one of claims 1 and 2 characterized in that the expansion pot (30) on which is mounted said rod (10) is suspended from the end of a cable (36) which is provided with a return means (52), the pulleys and drums on which the cable of the expansion pot is wound and said means of booster being placed on a gantry (40,42) whose head (40) carrying said pulleys and drums and the reminder means can be rotated 360 ° so that the rods can feed sandpits belonging to different vehicles located on different tracks. 4 - Dispositif de distribution pneumatique selon la revendication 3 caractérisé en ce que ledit moyen de rappel est réalisé sous la forme d'un contrepoids (52), les poulies et tambours sur lesquels s'enroulent les câbles (50) du pot de détente étant placé sur ledit portique (40-42) à tête (40) pivotante. 4 - A pneumatic distribution device according to claim 3 characterized in that said return means is made in the form of a counterweight (52), the pulleys and drums on which are wound the cables (50) of the expansion pot being placed on said gantry (40-42) with pivoting head (40). 5 - Dispositif de distribution pneumatique selon l'une quelconque des revendications précédentes caractérisé en ce que le câble (36) à l'extrémité duquel est monté le pot de détente (30) et le câble (50) à l'extrémité duquel est fixé le contrepoids (52) s'enroulent sur un tambour à double gorge (46). 5 - Pneumatic distribution device according to any one of the preceding claims, characterized in that the cable (36) at the end of which is mounted the expansion pot (30) and the cable (50) at the end of which is fixed the counterweight (52) is wound on a double-grooved drum (46).
EP92400896A 1991-04-03 1992-03-31 Device for pneumatic feeding of bulk powdered material, especially sand Withdrawn EP0507671A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104045A FR2674833B1 (en) 1991-04-03 1991-04-03 PNEUMATIC DISPENSING DEVICE FOR PULVERULENT BULK PRODUCTS, ESPECIALLY SAND.
FR9104045 1991-04-03

Publications (1)

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EP0507671A1 true EP0507671A1 (en) 1992-10-07

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EP92400896A Withdrawn EP0507671A1 (en) 1991-04-03 1992-03-31 Device for pneumatic feeding of bulk powdered material, especially sand

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EP (1) EP0507671A1 (en)
FR (1) FR2674833B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102490765A (en) * 2011-12-20 2012-06-13 鞍钢集团矿业公司 Sand-adding trolley for electric locomotive

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318872A1 (en) * 1993-06-07 1994-12-08 Moeller Hamburg Gmbh Co Kg Double tube for pneumatic conveyance
FR3139537A1 (en) * 2022-09-13 2024-03-15 Alstom Holdings Interface part for a filling gun for sand tanks of railway vehicles

Citations (3)

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Publication number Priority date Publication date Assignee Title
AT333843B (en) * 1974-09-11 1976-12-10 Klein Alb Kg SANDING STATION FOR FILLING IN LANDSAND OR DGL. BULK GOODS IN MOBILE STORAGE CONTAINERS
US4042184A (en) * 1976-09-02 1977-08-16 Langenohl Willard J Pump hose retriever
US4497350A (en) * 1983-06-22 1985-02-05 Dover Corporation Vapor recovery system having automatic shut-off mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT333843B (en) * 1974-09-11 1976-12-10 Klein Alb Kg SANDING STATION FOR FILLING IN LANDSAND OR DGL. BULK GOODS IN MOBILE STORAGE CONTAINERS
US4042184A (en) * 1976-09-02 1977-08-16 Langenohl Willard J Pump hose retriever
US4497350A (en) * 1983-06-22 1985-02-05 Dover Corporation Vapor recovery system having automatic shut-off mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102490765A (en) * 2011-12-20 2012-06-13 鞍钢集团矿业公司 Sand-adding trolley for electric locomotive
CN102490765B (en) * 2011-12-20 2014-03-12 鞍钢集团矿业公司 Sand-adding trolley for electric locomotive

Also Published As

Publication number Publication date
FR2674833A1 (en) 1992-10-09
FR2674833B1 (en) 1995-10-20

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