CN102818038A - High-pressure-resistance vertical furnace charge flow control valve - Google Patents
High-pressure-resistance vertical furnace charge flow control valve Download PDFInfo
- Publication number
- CN102818038A CN102818038A CN2012103184756A CN201210318475A CN102818038A CN 102818038 A CN102818038 A CN 102818038A CN 2012103184756 A CN2012103184756 A CN 2012103184756A CN 201210318475 A CN201210318475 A CN 201210318475A CN 102818038 A CN102818038 A CN 102818038A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- high pressure
- valve plate
- pressure resistant
- Prior art date
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a high-pressure-resistance vertical furnace charge flow control valve. The high-pressure-resistance vertical furnace charge flow control valve comprises a valve body, an access hole, a wear-resisting hopper, a first valve plate, a second valve plate, an executing mechanism and anti-falling safety devices, wherein the access hole is correspondingly formed in the side part of the valve body; the wear-resisting hopper is arranged at the inner part of the valve body; the first valve plate and the second valve plate are arranged below the wear-resisting hopper; the executing mechanism is used for controlling the valve plates to be opened, and is connected with the first valve plate and the second valve plate; and the anti-falling safety devices are respectively arranged at the lower ends of the first valve plate and the second valve plate. The high-pressure-resistance vertical furnace charge flow control valve disclosed by the invention has the characteristics of prevention of the falling off of the valve plates, compact structure, safety, reliability and the like.
Description
Technical field
The present invention relates to be used for the high pressure resistant top charging equipment that direct reducing and smelting shaft furnace does not have the bell furnace roof, relate in particular to a kind of high pressure resistant type shaft furnace materials flow control valve.
Background technique
Although it is improving constantly of blast furnace top pressure and utilization factor in recent years, rate of driving constantly increase thereupon, domestic newly-built or transform the old blast furnace not competent present market demand that seemed; Developed countries has begun to adopt the shaft furnace of direct-reduction process to smelt; And require to high production capacity low energy consumption, low delay ratio, low cost; High pressure operation, pollution-free direction develops.The high pressure resistant charging flow control valve of high pressure resistant charging equipment that the shaft furnace that adopts direct-reduction process to smelt is used; Can be used to control charging flow, speed, thereby can play control and guarantee in the shaft furnace non-bell furnace top charging equipment that the cloth of furnace charge in stove in the batch can is even, supply and demand reasonably acts on.Regulate the opening degree of the valve plate of charging flow control valve; The size of control charging flow; Cooperate at random with the distributor chute in the distributor; Reach in the shaft furnace production process the desired best distributing mode of smelting process, thereby guaranteed that segregation does not appear in furnace charge in stove, prevent that for large and medium-sized shaft furnace stable smooth operation charging segregation is very important.The oil cylinder stroke that drives usefulness adopts the Proportional valve that is provided with in the hydraulic system to control oil cylinder stroke, controls the angle that valve plate is opened thus, thereby reaches the size and the accuracy of control charging flow.
At present, the use working pressure lower (0.15-0.2Mpa) of the material flow gate in the blast furnace bell-less top charging equipment of the prior art.Particularly old non-bell furnace top charging equipment; Can not adopt by the restriction of its original furnace top pressure and device structure as using; Limit the operation with high pressure of shaft furnace, can not satisfy operation with high pressure smelting and charging technological requirement that shaft furnace does not have the bell furnace roof.
Summary of the invention
The technical problem that the present invention will solve is to provide a kind of high pressure resistant type charging flow control valve, and it has, and the valve plate of preventing comes off, compact structure, characteristics such as safe and reliable.
For realizing above-mentioned purpose, the invention provides a kind of high pressure resistant type shaft furnace materials flow control valve, comprising: valve body; Access opening is arranged on the sidepiece of said valve body accordingly; Wear-resistance funnel is arranged on the inside of said valve body; First valve plate and second valve plate are arranged on the below of said wear-resistance funnel; Be used to control the actuator that valve plate is opened, link to each other with second valve plate with said first valve plate; And the Drop-proof safety installations, be separately positioned on the lower end of said first valve plate and second valve plate.
Further, said actuator comprises: main rocker is arranged on the outside of the end of said valve body; Hollow shaft is arranged on the end of said valve body, and an end of said hollow shaft is positioned at the inside of said valve body, and an other end of said hollow shaft is positioned at the outside of said valve body; First cranks arm, and the one of which end is connected to an end that is positioned at valve body of said hollow shaft, and its other end is connected to said first valve plate; First rocking arm, one of which end are connected to the end outside the valve body that is positioned at of said hollow shaft; And first connecting rod, the one of which end is connected to the other end of said first rocking arm, and its other end is connected on the end of said main rocker.
Further, said actuator comprises: main rocker is arranged on the outside of the end of said valve body; Solid shaft, center are installed among the said hollow shaft coaxially, and said solid shaft has an end that is positioned at the outer end of valve body and is positioned at valve body; Second cranks arm, and the one of which end is connected to an end that is positioned at valve body of said solid shaft, and its other end is connected to said second valve plate; Second rocking arm, one of which end are connected to the end outside the valve body that is positioned at of said solid shaft; And second connecting rod, the one of which end is connected to the other end of said second rocking arm, and its other end is connected on the said main rocker another one end.
Further, said Drop-proof safety installations comprises safety hook, and said safety hook is connected to the outer arc side of said first valve plate and second valve plate, and with said first crank arm and second lower end of cranking arm snaps together each other.
Further, the position that said hollow shaft and said valve body join is provided with first self oiling bearing, and said solid shaft is provided with second self oiling bearing with the place, the two ends that are connected of said hollow shaft.
Further, be provided with O type high pressure resistant seal ring in outer end between said hollow shaft and said second self oiling bearing.
Further, be provided with high pressure resistant seal ring of rectangle and/or the high pressure resistant seal ring of ligulate between said solid shaft and said second self oiling bearing.
Further; Also include and be used to the oil cylinder that said actuator provides power; The end of said valve body also is provided with the bearing support that matches with first self oiling bearing; Said bearing support is provided with support, and said support is provided with erection support, and wherein said oil cylinder and main rocker are connected on the said erection support.
Further, also be provided with the high pressure resistant seal ring of socket end O type between said bearing support and the valve body.
Further, said first valve plate and second valve plate are respectively arc flashboard, and the centre of said flashboard offers hexagon or polygonal leaks the material mouth, and the inside dimensions scope of said leakage material mouth is 100-500mm.
According to high pressure resistant type charging flow control valve of the present invention, through multiple Sealing is set, when it can guarantee that shaft furnace carries out operation with high pressure, the sealing configuration of valve body axle head can be kept higher voltage endurance capability (0.4-0.6Mpa).Once more, because axle system adopts non-maintaining self oiling bearing, need not dispose dry oil lubrication station and pipe arrangement and pipe fitting.In addition, valve port adopts hexagon or polygonal, and valve plate adopts the Drop-proof safety hook with the joint of cranking arm, and prevents that the connecting bolt wearing and tearing from fractureing to come off the back and valve plate is come off.Whole valve body prevents furnace charge cutout and accumulation at the operation with high pressure charging flow stable smooth operation that makes in service, and compact structure has realized that shaft furnace does not have the operation with high pressure of bell furnace roof, has saved investment and maintenance, maintenance cost, has improved manufacturing efficiency and economic benefit.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.Wherein:
Fig. 1 is the external structure of high pressure resistant type shaft furnace materials flow control valve of the present invention;
Fig. 2 is the cut-away view of high pressure resistant type shaft furnace materials flow control valve of the present invention;
Fig. 3 be rotated counterclockwise 90 the degree after Fig. 2 in the A-A sectional view;
Fig. 4 is the plan view and the port shape figure of high pressure resistant type shaft furnace materials flow control valve of the present invention; And
Fig. 5 is the Drop-proof safety installations of high pressure resistant type shaft furnace materials flow control valve of the present invention and the cooperating structure schematic representation of valve plate.
Embodiment
Below, through exemplary mode of execution the present invention is specifically described.Yet should be appreciated that under the situation that is not having further narration element, structure and characteristic in mode of execution also can be attached in other mode of execution valuably.
Consult shown in Fig. 1-2, high pressure resistant type shaft furnace materials flow control valve of the present invention includes: valve body 11; Access opening 11a is arranged on the sidepiece of said valve body 11 accordingly; Wear-resistance funnel 12 is arranged on the inside of said valve body 11, and wear-resistance funnel top is taper; First valve plate 13 and second valve plate 14 are arranged on the below of said wear-resistance funnel 12 with being opposite opened.Said high pressure resistant type shaft furnace materials flow control valve also includes actuator 20, is used to drive said first valve plate 13 and second valve plate 14, and Drop-proof safety installations 15, is separately positioned on the lower end of said first valve plate 13 and second valve plate 14.
Particularly, in conjunction with Fig. 3-5, said actuator includes: main rocker 21, be arranged on the outside of the end of said valve body 11, and be used for driving simultaneously first rocking arm and second rocking arm that hereinafter will describe; Hollow shaft 221 is installed in the end of the valve body 11 that has bearing support, and an end of hollow shaft is positioned at valve body 11 outsides, and an other end is positioned at valve body 11 inside; Solid shaft 222 is installed among the said hollow shaft 221, and said hollow shaft 221 is that the center is coaxial with solid shaft 222.
Between the main rocker 21 and first valve plate 13, be provided with: first crank arm 231, first rocking arm 241 and the first connecting rod 251.Specifically, said first cranks arm, and an end of 231 is connected to said hollow shaft 221 is positioned at the outer end of valve body, and said first crank arm 231 the other end is connected to said first valve plate 13; One end of said first rocking arm 241 is connected to an end that is positioned at valve body 11 of said hollow shaft 221; One end of the other end of said first rocking arm 241 and first connecting rod 251 is hinged, and the other end of said first connecting rod 251 is hinged on the connection end of said main rocker 21.
Between the main rocker 21 and second valve plate 14, be provided with: second crank arm 232, the second rocking arms 242 and the second connecting rod 252.Specifically, said second cranks arm, and an end of 232 is connected to said solid shaft 222 is positioned at the outer end of valve body 11, and said second crank arm 232 the other end is connected to said second valve plate 14; One end of said second rocking arm 242 is connected to an end that is positioned at valve body 11 of said solid shaft 222; The other end of second rocking arm 242 is hinged to an end of said second connecting rod 252, and the other end of said second connecting rod 252 is hinged on another connection end of said main rocker 21.
Preferably, in conjunction with shown in Figure 4, said first valve plate 13 and second valve plate 14 are respectively arc flashboard; The form of splitting is adopted in the switching of said first valve plate 13 and second valve plate 14; The centre of said flashboard offers hexagon or polygonal leakage material mouth, and hexagon leaks the material mouth and along the circumferential direction is tending towards cylindrical, is polygonal along its axial direction in any aperture; Make materials flow be the column blanking along axial direction; All the time to centermost, the charging flow value all the time near one with the relevant approximate function value of opening degree size, and be prone to accurately calculating materials flow speed or materials flow time.Preferably, the inside dimensions scope of said leakage material mouth is 100-500mm.
Install for the ease of realizing, the end of said valve body 11 also is provided with bearing support, and said bearing support matches with first self oiling bearing.Further, also be provided with support 11b on the said bearing support, said support is provided with erection support.Wherein said oil cylinder and main rocker are connected on the said erection support.Also be provided with the high pressure resistant seal ring of socket end O type between said bearing support and the valve body 11.Said shaft furnace materials flow control valve also includes and is used to the oil cylinder 11c that said actuator provides power.
High pressure resistant type shaft furnace materials flow control valve of the present invention comes controlling and driving oil cylinder 11c through hydraulic proportion valve, to be used for power to said actuator being provided.The connection end of main rocker 21 links to each other with oil cylinder, and the power of oil cylinder is passed through the interlock transmission of actuator.Specifically, said oil cylinder at first drives said main rocker 21, follows said main rocker 21 interlock first connecting rod 251, first rocking arm 241, hollow shaft 221, first 231, first valve plate 13 of cranking arm successively respectively; And second connecting rod 252, second rocking arm 242, solid shaft 222, second 232, second valve plate 14 of cranking arm.
Come the controlling and driving oil cylinder through hydraulic proportion valve, thereby control the angle of the opening and closing of high pressure resistant type shaft furnace materials flow control valve, can improve control accuracy, adopt the center blowing, can reduce the wearing and tearing of associated components.Through the cylinder bar telescopic drive of oil cylinder, main rocker 21 rotates, with first valve plate 13 of realization opposite opened and the switching of second valve plate 14.
For the ease of controlling the switching angle between first valve plate 13 and second valve plate 14 preferably, said high pressure resistant type shaft furnace materials flow control valve also is provided with angle detection device 31.Meanwhile, for the operating position of control executing mechanism preferably, said high pressure resistant type shaft furnace materials flow control valve also is provided with limit position switch 32.Said angle detection device 31 corresponds respectively to said driving mechanism with limit position switch 32 and is arranged on the precalculated position of the end of said valve body 11.Particularly, can on one of them end of said valve body 11, mounting plate be set, angle detection device 31 and limit position switch 32 are arranged on the said mounting plate.
Be worth being, said Drop-proof safety installations 15 comprises safety hook with pointing out, and said safety hook is connected to the outer arc side of said first valve plate 13 and second valve plate 14, and snaps together each other with said first 231 and second crank arm 232 the lower end of cranking arm.Like this, though the bolt that connects first valve plate 13, second valve plate 14 be worn fracture come off after, two valve plates can not fallen in the stove yet, thereby have played the effect of safe anticreep effectively.
For reducing maintenance and safeguarding, reduce cost of investment, said hollow shaft 221 is provided with the first self oiling bearing 221a with the position that said valve body 11 joins, and the place, two ends that said solid shaft 222 is connected with said hollow shaft 221 is provided with the second self oiling bearing 222a.Above-mentioned first and second self oiling bearings are on metallic matrix, to be bumped into solid lubricant uniformly, can realize oilless selflubricating, are specially adapted to can not refuel or be in the occasion that is difficult for oiling in the closed structure for avoiding polluting.Therefore; Than rolling bearing of the prior art; Self oiling bearing of the present invention need not to be provided with specially dry oil lubrication station, lubricant oil and materials such as drier oil pipe arrangement and control unit, practices thrift investment and repair and maintenance cost, has also reduced the time of stop production to overhaul simultaneously; Improve working efficiency greatly, improved the output and the economic benefit of shaft furnace effectively.
Because the field that high pressure resistant type shaft furnace materials flow control valve uses is combined into totally-enclosed system high pressure operation (working pressure: 0.4-0.6MPa) system, poor working environment.Be provided with the high pressure resistant seal ring 221n of outer end O type between said hollow shaft 221 and the said second self oiling bearing 222a.Be provided with high pressure resistant seal ring 222n of rectangle and/or the high pressure resistant seal ring 222m of ligulate between said solid shaft 222 and the said second self oiling bearing 222a.Be that high pressure resistant sealing ring material is a silicone rubber alternatively.In order to realize further sealing, the end near valve inner of said solid shaft also is provided with sealing a set of cups 230.
In sum, high pressure resistant type charging flow control valve of the present invention has following main advantage and characteristics.
1, to adopt lower discharge port be interior hexagon and inner polygon to the application's high pressure resistant type charging flow control valve, guaranteed furnace charge in low-keyed random control, makes that furnace charge is evenly distributed in stove, stable smooth operation, prevent furnace charge accumulation or cutout and segregation.
2, the application's high pressure resistant type charging flow control valve has compact structure, high pressure resistant (working pressure 0.4-0.6Mpa); Adopt high voltage bearing O shape and rectangular seal and the non-maintaining bearing of selflubricating, do not need to be provided with specially the dry oil lubrication station, drier oil pipe arrangement and lubricated wet goods investment cost, reduced construction investment and materials consumption, the lubrication oil consumption expense of charging flow control valve.
3, set Drop-proof safety hook on the application's valve plate outer arc side; Have anticreep, characteristics such as simple in structure, safe and reliable, avoid valve plate in use connecting bolt be worn fractureing and come off the back and valve plate is come off fall into the accident that results in blockage in the pipeline of bottom high pressure sealing valve.
Be appreciated that the present invention describes through some embodiments, those skilled in the art know, under the situation that does not break away from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these characteristics and embodiment.In addition, under instruction of the present invention, can make amendment to these characteristics and embodiment can not break away from the spirit and scope of the present invention to adapt to concrete situation and material.Therefore, the present invention does not receive the restriction of specific embodiment disclosed herein, and all interior embodiments of claim scope that fall into the application belong to protection scope of the present invention.
Claims (10)
1. a high pressure resistant type shaft furnace materials flow control valve is characterized in that, comprising:
Valve body (11);
Access opening (11a) is arranged on the sidepiece of said valve body (11) accordingly;
Wear-resistance funnel (12) is arranged on the inside of said valve body (11);
First valve plate and second valve plate (13,14) are arranged on the below of said wear-resistance funnel (12);
Be used to control the actuator (20) that valve plate is opened, link to each other with said first valve plate and second valve plate (13,14); And
Drop-proof safety installations (15) is separately positioned on the lower end of said first valve plate and second valve plate (13,14).
2. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 1 is characterized in that said actuator (20) comprising:
Main rocker (21) is arranged on the outside of the end of said valve body (11);
Hollow shaft (221) is arranged on the end of said valve body (11), and an end of said hollow shaft is positioned at the inside of said valve body (11), and an other end of said hollow shaft is positioned at the outside of said valve body (11);
First cranks arm (231), and the one of which end is connected to an end that is positioned at valve body (11) of said hollow shaft, and its other end is connected to said first valve plate;
First rocking arm (241), one of which end are connected to the end outside the valve body (11) that is positioned at of said hollow shaft; And
First connecting rod (251), one of which end are connected to the other end of said first rocking arm (241), and its other end is connected on the end of said main rocker (21).
3. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 1 is characterized in that said actuator (20) comprising:
Main rocker (21) is arranged on the outside of the end of said valve body (11);
Solid shaft (222), center are installed among the said hollow shaft coaxially, and said solid shaft has an end that is positioned at the outer end of valve body (11) and is positioned at valve body (11);
Second cranks arm (232), and the one of which end is connected to an end that is positioned at valve body (11) of said solid shaft, and its other end is connected to said second valve plate;
Second rocking arm (242), one of which end are connected to the end outside the valve body (11) that is positioned at of said solid shaft; And
Second connecting rod (252), one of which end are connected to the other end of said second rocking arm (242), and its other end is connected on said main rocker (21) the another one end.
4. like claim 2 or 3 described high pressure resistant type shaft furnace materials flow control valves; It is characterized in that; Said Drop-proof safety installations (15) comprises safety hook, and said safety hook is connected to the outer arc side of said first valve plate and second valve plate (13,14); And with said first crank arm with second crank arm (231,232) the lower end snap together each other.
5. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 4; It is characterized in that; Said hollow shaft (221) is provided with first self oiling bearing (221a) with the position that said valve body joins, and said solid shaft (222) is provided with second self oiling bearing (222a) with the place, the two ends that are connected of said hollow shaft (221).
6. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 5 is characterized in that, is provided with the high pressure resistant seal ring of outer end O type (221n) between said hollow shaft (221) and said second self oiling bearing (222a).
7. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 6; It is characterized in that, be provided with high pressure resistant seal ring of rectangle (222n) and/or the high pressure resistant seal ring of ligulate (222m) between said solid shaft (222) and said second self oiling bearing (222a).
8. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 7; It is characterized in that; Also include and be used to said actuator the oil cylinder of power (11c) is provided, the end of said valve body (11) also is provided with the bearing support that matches with first self oiling bearing (221a), and said bearing support is provided with support (11b); Said support is provided with erection support, and wherein said oil cylinder and main rocker are connected on the said erection support.
9. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 1 is characterized in that, also is provided with the high pressure resistant seal ring of socket end O type (222s) between said bearing support and the valve body (11).
10. high pressure resistant type shaft furnace materials flow control valve as claimed in claim 1; It is characterized in that said first valve plate and second valve plate (13,14) are respectively arc flashboard; The centre of said flashboard offers hexagon or polygonal leaks the material mouth, and the inside dimensions scope of said leakage material mouth is 100-500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210318475.6A CN102818038B (en) | 2012-08-31 | 2012-08-31 | High-pressure-resistance vertical furnace charge flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210318475.6A CN102818038B (en) | 2012-08-31 | 2012-08-31 | High-pressure-resistance vertical furnace charge flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102818038A true CN102818038A (en) | 2012-12-12 |
| CN102818038B CN102818038B (en) | 2015-02-04 |
Family
ID=47302354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210318475.6A Active CN102818038B (en) | 2012-08-31 | 2012-08-31 | High-pressure-resistance vertical furnace charge flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102818038B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075168A (en) * | 1993-03-08 | 1993-08-11 | 冶金工业部北京钢铁设计研究总院 | External non-bell cap chute arranger for furnace |
| US5618032A (en) * | 1994-05-04 | 1997-04-08 | Midrex International B.V. Rotterdam, Zurich Branch | Shaft furnace for production of iron carbide |
| CN101696846A (en) * | 2009-10-26 | 2010-04-21 | 中冶赛迪工程技术股份有限公司 | Roll loosening device |
| JP2010133480A (en) * | 2008-12-04 | 2010-06-17 | Sekisui Chem Co Ltd | Diaphragm valve |
| CN201851679U (en) * | 2010-11-18 | 2011-06-01 | 中冶东方工程技术有限公司 | Compact-type sealing valve |
| CN202063930U (en) * | 2011-04-20 | 2011-12-07 | 中冶东方工程技术有限公司 | Compact type feed stream adjusting valve |
| CN202226871U (en) * | 2011-09-20 | 2012-05-23 | 中冶东方工程技术有限公司 | Material feeding device at compact bell-less furnace top of blast furnace |
| CN202766557U (en) * | 2012-08-31 | 2013-03-06 | 中冶东方工程技术有限公司 | High pressure resistant type furnace burden flow control valve for shaft furnace |
-
2012
- 2012-08-31 CN CN201210318475.6A patent/CN102818038B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075168A (en) * | 1993-03-08 | 1993-08-11 | 冶金工业部北京钢铁设计研究总院 | External non-bell cap chute arranger for furnace |
| US5618032A (en) * | 1994-05-04 | 1997-04-08 | Midrex International B.V. Rotterdam, Zurich Branch | Shaft furnace for production of iron carbide |
| JP2010133480A (en) * | 2008-12-04 | 2010-06-17 | Sekisui Chem Co Ltd | Diaphragm valve |
| CN101696846A (en) * | 2009-10-26 | 2010-04-21 | 中冶赛迪工程技术股份有限公司 | Roll loosening device |
| CN201851679U (en) * | 2010-11-18 | 2011-06-01 | 中冶东方工程技术有限公司 | Compact-type sealing valve |
| CN202063930U (en) * | 2011-04-20 | 2011-12-07 | 中冶东方工程技术有限公司 | Compact type feed stream adjusting valve |
| CN202226871U (en) * | 2011-09-20 | 2012-05-23 | 中冶东方工程技术有限公司 | Material feeding device at compact bell-less furnace top of blast furnace |
| CN202766557U (en) * | 2012-08-31 | 2013-03-06 | 中冶东方工程技术有限公司 | High pressure resistant type furnace burden flow control valve for shaft furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102818038B (en) | 2015-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201395673Y (en) | Shunt valve of water-jet loom | |
| CN202766557U (en) | High pressure resistant type furnace burden flow control valve for shaft furnace | |
| CN204933585U (en) | Block-resistant type low speed coal mill ball adding device | |
| CN102818038A (en) | High-pressure-resistance vertical furnace charge flow control valve | |
| CN201990692U (en) | Automatic air dispensation system of multiple blast furnace blowers | |
| CN102748486A (en) | Compact material flow adjusting valve | |
| CN207132360U (en) | A kind of pneumatic buffer slag separator | |
| CN202063930U (en) | Compact type feed stream adjusting valve | |
| CN202246781U (en) | Chain grate and lubricating device thereof | |
| CN207404530U (en) | A kind of full eccentrice type turns round blanking airlock | |
| CN103612916B (en) | A kind of turnover plate type feeder | |
| CN202414806U (en) | Bulk machine with double pipelines | |
| CN105060233B (en) | A kind of slurry delivery device | |
| CN103953757A (en) | Lower sealing valve of parallel-tank bell-less furnace top | |
| CN208397352U (en) | A kind of spherical shearing Double-deck cinder discharge valve | |
| CN202063931U (en) | Compact discharge valve | |
| CN207962691U (en) | Split type pnenmatic slag handling system | |
| CN203131064U (en) | High-precision material discharge valve | |
| CN205274759U (en) | A dust discharging device for dust remover | |
| CN210856186U (en) | Small-size blast furnace does not have bell equipment distributing device | |
| CN211820962U (en) | Valve switch driving device | |
| CN205228183U (en) | Cold quick -witted arc valve drive combs | |
| CN204942691U (en) | A kind of ball valve end cover structure | |
| CN212975461U (en) | External circulation system of linear raw material mill | |
| CN203595403U (en) | Discharging control device for discharging pipe of submerged arc furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |