EP0351899A2 - Device for the total emptying of large-size ink containers having a low degree of flowability - Google Patents

Device for the total emptying of large-size ink containers having a low degree of flowability Download PDF

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Publication number
EP0351899A2
EP0351899A2 EP89201477A EP89201477A EP0351899A2 EP 0351899 A2 EP0351899 A2 EP 0351899A2 EP 89201477 A EP89201477 A EP 89201477A EP 89201477 A EP89201477 A EP 89201477A EP 0351899 A2 EP0351899 A2 EP 0351899A2
Authority
EP
European Patent Office
Prior art keywords
container
lateral wall
pressing plate
gasket
flowability
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
Application number
EP89201477A
Other languages
German (de)
French (fr)
Other versions
EP0351899B1 (en
EP0351899A3 (en
Inventor
Paolo Orlandi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOTAL INCHIOSTRI S.P.A.
Original Assignee
TOTAL INCHIOSTRI SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TOTAL INCHIOSTRI SpA filed Critical TOTAL INCHIOSTRI SpA
Publication of EP0351899A2 publication Critical patent/EP0351899A2/en
Publication of EP0351899A3 publication Critical patent/EP0351899A3/en
Application granted granted Critical
Publication of EP0351899B1 publication Critical patent/EP0351899B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0227—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by an ejection plunger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/58—Arrangements of pumps
    • B67D7/62—Arrangements of pumps power operated
    • B67D7/64—Arrangements of pumps power operated of piston type
    • B67D7/645—Barrel pumps

Definitions

  • the present invention relates to a device for the total emptying of large-size ink containers having a low degree of flowability.
  • Modern ink used in super-fast heat-set reel printing machines is notoriously characterized by a high degree of thixotropy and thus by extremely low qualities of flowability.
  • the system includes a piston pump operated by compressed air inserted directly from above into the container and integrally connected to a pressing plate forming a perfect airtight seal.
  • the plate has the function of scraping the walls of the container perfectly and promoting with its descent the feeding of the ink to the pump's intake mouth.
  • an emptying device has thus been accomplished for large-size containers, of the type having a pressing plate sliding vertically inside the container, characterized in the first place in that the pressing plate is provided with a concave lateral wall and is surrounded by an annular cylindrical gasket held against such concave lateral wall so as to be in friction and sealing contact with the containers' lateral wall at an extreme lip of same turned towards the bottom of the container.
  • the concavity of the pressing plate's lateral wall is of a circular shape, and in which case the annular gasket is in contact with the container's inner wall at both its extreme lips.
  • the gasket is accomplished in flexible PVC.
  • the gasket adapts easily to any ovalization of the container, it has a high adherence to the container's inner wall and, at the same time, it creates limited friction, which does not hamper the descent of the plate.
  • An appropriate size also ensures the pressing plate's unsinkability.
  • a further feature of the present invention is represented by the fact that the pressing plate is provided with a guide tube which extends axially upwards from the centre of the plate and slidably engages the top of the container.
  • the pressing plate can maintain itself constantly horizontal during its downward stroke.
  • the device also includes a suction pump associated with the bottom of the container, below the pressing plate.
  • Fig. 1 shows a container 1, having a cylindrical lateral wall 2, a top wall 3 provided with a feed opening 4 having an openable cover 5, and a bottom wall 6 having a supply hole 7.
  • a conduit 8 which a flexible union 9 connects to the inlet of a piston pump 10 operated by a motor 11 and provided with an outlet conduit 12.
  • a pressing plate 13 Inside the container 1 there is slidably housed a pressing plate 13, with a lateral wall having circular concavity 14 (Fig. 2), wherein a flexible gasket in PVC 15 is inserted in the form of a cylindrical ribbon.
  • the gasket 15 is held by a clamp 16, which in combination with the above concavity confers on the gasket a corresponding concave shape which determines the friction contact between the gasket and the container's lateral wall only at two extreme lips 17 and 18.
  • the pressing plate is provided with a hole 24 with a vent valve 25 (Fig. 2).
  • the pressing plate 13 pushes the underlying ink contained in the container 1 towards the supply hole 7.
  • the ink is sucked up by the piston pump 10 and sent to the outlet conduit 12.
  • the gasket 15 is airtight with the container' s lateral wall 2 at the lips 17 and 18, thus limiting friction with the above wall 2.
  • the tube 21 together with the guide hole 22 ensures the constant horizontal disposition of the plate 13 during its descent.
  • the venting hole 24 with the valve 25 allows the air to be vented from under the plate 13 when required.

Abstract

The device includes a pressing plate (13) provided with a concave lateral wall (14). With the latter there is held in engagement a cylindrical annular gasket (15) which is in contact with the lateral wall (2) of the container (1) at a lower extreme lip (17).

Description

  • The present invention relates to a device for the total emptying of large-size ink containers having a low degree of flowability.
  • Modern ink used in super-fast heat-set reel printing machines is notoriously characterized by a high degree of thixotropy and thus by extremely low qualities of flowability.
  • There has been in use for some time a valid system for feeding the ink fountains of printing machines when the ink is packaged in 200 kg containers having total opening.
  • The system includes a piston pump operated by compressed air inserted directly from above into the container and integrally connected to a pressing plate forming a perfect airtight seal. The plate has the function of scraping the walls of the container perfectly and promoting with its descent the feeding of the ink to the pump's intake mouth.
  • The problem started when 1000 kg containers began to be used instead of the 200 kg size. In fact, with these containers, different requirements had to be met such as:
    • a) a high adherence to the container's inner walls;
    • b) a highly flexible gasket to adapt to the inevitable ovalization of the container's wall;
    • c) the lowest possible friction between gasket and container so as not to hamper the plate's descent;
    • d) a gasket of a material able to resist chemically;
    • e) a non-sinkable plate;
    • f) the descent of the plate to be executed in a constantly horizontal manner.
  • According to the invention an emptying device has thus been accomplished for large-size containers, of the type having a pressing plate sliding vertically inside the container, characterized in the first place in that the pressing plate is provided with a concave lateral wall and is surrounded by an annular cylindrical gasket held against such concave lateral wall so as to be in friction and sealing contact with the containers' lateral wall at an extreme lip of same turned towards the bottom of the container.
  • Preferably, the concavity of the pressing plate's lateral wall is of a circular shape, and in which case the annular gasket is in contact with the container's inner wall at both its extreme lips.
  • Still preferably, the gasket is accomplished in flexible PVC.
  • In this way the gasket adapts easily to any ovalization of the container, it has a high adherence to the container's inner wall and, at the same time, it creates limited friction, which does not hamper the descent of the plate. An appropriate size also ensures the pressing plate's unsinkability.
  • A further feature of the present invention is represented by the fact that the pressing plate is provided with a guide tube which extends axially upwards from the centre of the plate and slidably engages the top of the container.
  • In this way the pressing plate can maintain itself constantly horizontal during its downward stroke.
  • Of course, so as to assist in the descent of the pressing plate even in the case of some slight oozing of ink through the gasket's engagement area, the device also includes a suction pump associated with the bottom of the container, below the pressing plate.
  • An example of an embodiment of the present invention is illustrated for greater clarity, but with no limiting intention, in the enclosed drawings, wherein:
    • Fig. 1 shows schematically, partly as a view and partly in cross-section, a large-size container provided with an emptying device according to the invention;
    • Fig. 2 shows the enlarged detail of the pressing plate and its corresponding gasket, of which said emptying device is constituted.
  • Fig. 1 shows a container 1, having a cylindrical lateral wall 2, a top wall 3 provided with a feed opening 4 having an openable cover 5, and a bottom wall 6 having a supply hole 7.
  • From the supply hole 7 there extends laterally a conduit 8, which a flexible union 9 connects to the inlet of a piston pump 10 operated by a motor 11 and provided with an outlet conduit 12.
  • Inside the container 1 there is slidably housed a pressing plate 13, with a lateral wall having circular concavity 14 (Fig. 2), wherein a flexible gasket in PVC 15 is inserted in the form of a cylindrical ribbon. The gasket 15 is held by a clamp 16, which in combination with the above concavity confers on the gasket a corresponding concave shape which determines the friction contact between the gasket and the container's lateral wall only at two extreme lips 17 and 18.
  • At the centre of the pressing plate 13 there is welded and strengthened with gussets 19 a receiving opening 20 for a vertical tube 21, which extends upwards and passes slidably through the feed opening 4 and a lower guide hole 22 in the plate 23 (Fig. 1).
  • Lastly the pressing plate is provided with a hole 24 with a vent valve 25 (Fig. 2).
  • During operations, the pressing plate 13 pushes the underlying ink contained in the container 1 towards the supply hole 7. The ink is sucked up by the piston pump 10 and sent to the outlet conduit 12.
  • The gasket 15 is airtight with the container' s lateral wall 2 at the lips 17 and 18, thus limiting friction with the above wall 2. The tube 21 together with the guide hole 22 ensures the constant horizontal disposition of the plate 13 during its descent. The venting hole 24 with the valve 25 allows the air to be vented from under the plate 13 when required.

Claims (5)

1. An emptying device for the total emptying of large-size ink containers having a low degree of flowability, including a pressing plate (13) sliding vertically inside the container (1), characterized in that said pressing plate (13) is provided with a concave lateral wall (14) and is surrounded by an annular cylindrical gasket (15) held against such concave lateral wall (14) so as to be in friction and sealing contact with the containers' lateral wall (2) at an extreme lip (17) of same turned towards the bottom of the container.
2. Device according to claim 1, characterized in that said gasket (15) is of PVC.
3. Device according to claim 1, characterized in that said concave lateral wall (14) of the pressing plate (13) has circular concavity and that said gasket (15) is held inside it so as to be in contact with the container's lateral wall at its extreme lower (17) and upper (18) lips.
4. Device according to claim 1, characterized in that said pressing plate (13) is provided with a guide tube (21), which extends vertically upwards from the centre of the plate and slidably engages with a guide hole (22) on the top of the container.
5. Device according to claim 1, characterized in that it also includes a suction pump (10) associated with the container's bottom (6).
EP89201477A 1988-07-22 1989-06-08 Device for the total emptying of large-size ink containers having a low degree of flowability Expired - Lifetime EP0351899B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8821449A IT1227418B (en) 1988-07-22 1988-07-22 DEVICE FOR THE TOTAL EMPTYING OF LARGE-SIZED CONTAINERS FOR LOW-SLIDING INK.
IT2144988 1988-07-22

Publications (3)

Publication Number Publication Date
EP0351899A2 true EP0351899A2 (en) 1990-01-24
EP0351899A3 EP0351899A3 (en) 1991-01-02
EP0351899B1 EP0351899B1 (en) 1994-09-28

Family

ID=11181948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89201477A Expired - Lifetime EP0351899B1 (en) 1988-07-22 1989-06-08 Device for the total emptying of large-size ink containers having a low degree of flowability

Country Status (4)

Country Link
EP (1) EP0351899B1 (en)
AT (1) ATE112212T1 (en)
DE (1) DE68918520T2 (en)
IT (1) IT1227418B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0514770A1 (en) * 1991-05-24 1992-11-25 Kabushiki Kaisha Marukomu Paste feeding apparatus
EP0810091A2 (en) * 1993-05-12 1997-12-03 Tani Electronics Industry Co., Ltd. Ink supplier for feeding a printer device
EP0812801A1 (en) * 1996-06-12 1997-12-17 Total Raffinage Distribution S.A. Device for storing and complete discharging grease
WO1999003777A1 (en) * 1997-07-18 1999-01-28 Druckfarbenfabrik Gebr. Schmidt Gmbh Method for supplying printing machines with printing ink
EP1052217A1 (en) * 1999-05-05 2000-11-15 Eftec Ag Venting device for containers with follower plate
DE202004009185U1 (en) * 2004-06-11 2005-10-27 Nordson Corp., Westlake Device for discharging liquid media from containers
DE102010062797A1 (en) * 2010-12-10 2012-06-14 Krones Aktiengesellschaft Method and device for aseptic filling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009047862A1 (en) * 2009-09-30 2011-04-07 Technotrans Ag Ink conveyor system i.e. drum pump, for conveying printing ink to printing machine, has ink pump with suction element connected with interior of ink container, and ink leveling unit for leveling ink level in area of suction element

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2203772A1 (en) * 1972-10-24 1974-05-17 Baldwin Gegenheimer Corp
US4534493A (en) * 1983-08-03 1985-08-13 National Starch And Chemical Corporation Apparatus for dispensing high viscosity thermoplastic materials
US4632281A (en) * 1984-03-29 1986-12-30 Johnstone Pump Company Magnadrum pump assembly
US4635820A (en) * 1986-01-09 1987-01-13 Slautterback Corporation Bulk unloader of solidified thermoplastic material from pails and drums
EP0227232A2 (en) * 1985-10-30 1987-07-01 Automation, Inc. Ink monitor system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2203772A1 (en) * 1972-10-24 1974-05-17 Baldwin Gegenheimer Corp
US4534493A (en) * 1983-08-03 1985-08-13 National Starch And Chemical Corporation Apparatus for dispensing high viscosity thermoplastic materials
US4632281A (en) * 1984-03-29 1986-12-30 Johnstone Pump Company Magnadrum pump assembly
EP0227232A2 (en) * 1985-10-30 1987-07-01 Automation, Inc. Ink monitor system
US4635820A (en) * 1986-01-09 1987-01-13 Slautterback Corporation Bulk unloader of solidified thermoplastic material from pails and drums

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0514770A1 (en) * 1991-05-24 1992-11-25 Kabushiki Kaisha Marukomu Paste feeding apparatus
US5265773A (en) * 1991-05-24 1993-11-30 Kabushiki Kaisha Marukomu Paste feeding apparatus
EP0810091A2 (en) * 1993-05-12 1997-12-03 Tani Electronics Industry Co., Ltd. Ink supplier for feeding a printer device
EP0810091A3 (en) * 1993-05-12 1998-01-07 Tani Electronics Industry Co., Ltd. Ink supplier for feeding a printer device
EP0812801A1 (en) * 1996-06-12 1997-12-17 Total Raffinage Distribution S.A. Device for storing and complete discharging grease
FR2749835A1 (en) * 1996-06-12 1997-12-19 Total Raffinage Distribution DEVICE FOR THE STORAGE AND INTEGRAL DEPOSITION OF FAT
WO1999003777A1 (en) * 1997-07-18 1999-01-28 Druckfarbenfabrik Gebr. Schmidt Gmbh Method for supplying printing machines with printing ink
EP1052217A1 (en) * 1999-05-05 2000-11-15 Eftec Ag Venting device for containers with follower plate
DE202004009185U1 (en) * 2004-06-11 2005-10-27 Nordson Corp., Westlake Device for discharging liquid media from containers
DE102010062797A1 (en) * 2010-12-10 2012-06-14 Krones Aktiengesellschaft Method and device for aseptic filling

Also Published As

Publication number Publication date
DE68918520T2 (en) 1995-02-23
EP0351899B1 (en) 1994-09-28
EP0351899A3 (en) 1991-01-02
IT1227418B (en) 1991-04-09
DE68918520D1 (en) 1994-11-03
ATE112212T1 (en) 1994-10-15
IT8821449A0 (en) 1988-07-22

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