EP0601675A1 - Dispositif d'alimentation de substances fluides à une machine utilisant ces substances - Google Patents

Dispositif d'alimentation de substances fluides à une machine utilisant ces substances Download PDF

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Publication number
EP0601675A1
EP0601675A1 EP93250310A EP93250310A EP0601675A1 EP 0601675 A1 EP0601675 A1 EP 0601675A1 EP 93250310 A EP93250310 A EP 93250310A EP 93250310 A EP93250310 A EP 93250310A EP 0601675 A1 EP0601675 A1 EP 0601675A1
Authority
EP
European Patent Office
Prior art keywords
substance
hollow body
pump
immersion
conveying elements
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
EP93250310A
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German (de)
English (en)
Other versions
EP0601675B1 (fr
Inventor
Johannes Zimmer
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0601675A1 publication Critical patent/EP0601675A1/fr
Application granted granted Critical
Publication of EP0601675B1 publication Critical patent/EP0601675B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures

Definitions

  • the invention relates to a device for supplying flowable substances to a printing or coating machine or to another substance-consuming machine with a substance-promoting, engaged conveying elements such as gear or toothed roller elements or other displacement bodies comprising pump, the conveying elements being at a fixed distance from one another axially are stored and at least one of the conveying elements is driven by a bearing shaft driven by a pump motor.
  • a substance-promoting, engaged conveying elements such as gear or toothed roller elements or other displacement bodies comprising pump
  • containers with a relatively large content for sample and collection prints are uneconomical since the amounts of printing paste provided are not required and considerable amounts of losses in the containers and residual amounts of paint in the lines, the ratio of substance consumption amounts to loss / residual amounts being very unfavorable.
  • special cleaning efforts with high water consumption are required, whereby large amounts of substance residues get into the wastewater and pollute the environment. A quick change of substance is not possible.
  • Particularly large disadvantages in terms of economy as well as environmental impacts arise with multi-color printing with, for example, 20 colors, in particular with smaller application / printing batches and / or with frequent pattern changes.
  • Small printing paste supply units with a pump and a relatively small container placed thereon are also known. Such a device is intended for lateral attachment to a printing press, the pump and container in the form of a unit to be transported by hand having to be designed to be particularly small, and a substance coating only having to be carried out from above.
  • the invention has for its object to provide a substance supply device that can be used for a wide variety of quantities, consumption amounts e.g. for production and / or sample prints and substance-consuming facilities such as individual printing stations should be usable, with each use substance loss and residual amounts should be reduced to the greatest extent to ensure extremely economical and environmentally friendly use, also through low cleaning water consumption.
  • the device is designed as a submersible pump with a long, circular cylindrical jacket hollow body, such as a tube or the like, for immersion in substance, which is located on its immersion-free (upper) End is attached to the pump motor and at the submersible (lower) end with a front closure wall it is concluded that an upper substance passage opening is formed in the area of the immersion-free end, that the conveying elements such as toothed rollers, gearwheels or the like are arranged in the jacket hollow body in the area of its immersible end, and that a lower substance passage opening is formed in the edge region of the immersible hollow body end.
  • a major advantage is that in the submersible pump according to the invention there is no suction path between the container substance present at the lower substance passage opening and the conveying elements arranged in the region of this opening.
  • Conventional suction lines between the tank and the pump have been eliminated. Losses / residual amounts in conventional suction lines, cleaning work and the associated water consumption are eliminated.
  • the circular cylindrical jacket hollow body forms a slim, relatively long cylinder immersion tube (immersion cylinder) which can be used in substance storage containers of any size or other substance volume.
  • the front closure wall forms a stable and robust element on which the submersible pump can be placed during operation.
  • the submersible pump By means of the lower substance passage opening it is ensured that, in any case, when the submersible pump is inclined relative to the storage container, it can be emptied down to a very small residual amount of, for example, approximately 1/4 liter.
  • the pump attached to the submersible upper edge of the submersible pump forms with the submersible pump tube an overall slim pump assembly which, in its vertical operating arrangement, can be installed in a space-saving manner and in particular directly at or near a substance-consuming device.
  • the elimination of conventional lines between the pump and the container and the ability to be arranged on or near the consumption device are particularly advantageous not only because of the very short connecting lines between the pump and the consumption device, but also with regard to occupational safety and the gain in space in the work area, for example at machine pressure stations.
  • a pump unit is formed with the device according to the invention, which forms a device which can be easily integrated into the respective substance delivery system for a wide variety of substance consumption devices and quantities and which not only - as explained - for filling the system but preferably also by a simple pump reversal operation in the System emptying and / or cleaning offers considerable advantages in terms of economic, ecological, operational and safety requirements.
  • a particularly advantageous embodiment consists in that conveying elements, such as preferably toothed rollers, are overhung by one-sided axial bearings on their end faces facing the motor drive. This considerably simplifies the construction and internal cleaning of the dip tube.
  • the conveying elements can also be mounted axially on the lower end walls in a simple manner on the end closure wall, as a result of which longer conveying element lengths can be provided.
  • the conveying element is designed as a toothed roller, the teeth of each toothed roller reaching only in the apex region opposite the toothed roller engagement region, forming a conveying gap without contact up to the inner wall of the hollow jacket body, while the remaining space between the hollow body inner wall and tooth rolling is expanded by the cavity so that the clear distances between the tooth apices and the hollow body inner wall are a multiple of the conveyor gap width.
  • the space between the toothed roller periphery and the inner circumference of the submersible cylinder is particularly effective for conveying the substance.
  • the device according to the invention expediently comprises a washing device which is adapted to the submersible pump and is in the form of a washing tube which, due to the particularly slim shape of the submersible cylinder, is particularly space-saving.
  • the jacket body expediently consists of a relatively light weight, durable and corrosion-free plastic tube. To avoid substance residues on the outer circumference of the tube, it is also particularly advantageous to design it with a surface that is highly slidable for substance. It is very expedient that a substance-wiping element, such as a lamellar ring, a sleeve or the like, which is movable along this sliding element, is placed on the outside of the immersion cylinder in order to wipe off substance in a simple manner for cleaning.
  • a substance-wiping element such as a lamellar ring, a sleeve or the like
  • the submersible pump according to the invention can, due to the relatively short substance delivery paths achieved with it, be operated particularly advantageously in the reversing mode, in particular to return substance from a supply system and / or to pump water back and forth for cleaning in the system.
  • a device 1 comprises a submersible pump with a long, circular cylindrical tube submersible cylinder 31, which is attached to a three-phase motor 34 at the submerged upper edge with a flange 38 is.
  • the drive axis of the motor 3 is axially parallel to the cylinder axis 43, the two axes being at least almost aligned.
  • the motor 34 forms a relatively short pump head part with a housing transverse diameter which is only slightly larger than the cylinder diameter. A slim submersible pump unit 3 is thereby formed.
  • the immersion cylinder 31 is closed at its lower end with a stopper-like closure wall 36 which projects downward from the cylinder 31 with a spherical section surface forming a contact surface.
  • a stopper-like closure wall 36 which projects downward from the cylinder 31 with a spherical section surface forming a contact surface.
  • two toothed rollers 32, 33 forming conveyor elements are used in the lower third and end region of the cylinder 31. These extend parallel to the cylinder axis 43, the two toothed rollers which are in engagement in the central region of the cylinder 31 being provided with the same lengths and diameters.
  • the toothed roller diameter is slightly smaller than half the inner diameter of the cylinder, so that narrow conveyor gaps 311 are formed between toothed rollers 32, 33 and the inner wall of the cylinder, the tooth crowns of the rotating rollers reaching tangentially to longitudinal line sections of the inner circumference of the cylinder . It is essential that the gap distances between the tooth crowns and the inner wall of the cylinder remain constant, so that contact of the teeth with the inner wall of the cylinder is excluded. This is achieved in that the toothed rollers 32, 33 are mounted axially.
  • the toothed roller end face slidably rotatably against the flat inner surface of the closure wall 36 and against a pivot bearing part 350.
  • toothed rollers 32, 33 are axially supported on the bearing part 350 only on one side.
  • the axial bearing on the closure wall 36 is omitted.
  • the end faces of the rollers lie only on the flat inner wall in such a way that they can rotate and slide.
  • a lamellar ring 37 which can be moved along this in a sliding sealing system, is placed over the outer circumference of the immersion cylinder 31 for stripping off substance.
  • a device according to the invention comprises a movement device connected to the submersible pump unit 3.
  • the submersible pump unit 3 is attached to a stand arm 39 of a telescopic stand stand 53. It is particularly useful that the submersible pump 3 is detachably attached to, for example, a bearing plate of the stand arm.
  • the tripod stand 53 with the height-adjustable arm 39 is advantageously arranged directly on the side of a printing press 8 in the area under the printing station round template 81 and, if appropriate, also expediently along the Machine 8 or the like can be moved by means of a rail (not shown).
  • a very short pressure line in the form of, for example, a flexible hose 7 is reached between the pump opening 380 and the connection 71 of a distribution pipe (paint pipe) 75 of the round template 81.
  • the pressure line 7 can be quickly and easily connected or detached from the opening 380 and the connection of the distribution pipe 75 by means of connection couplings (not shown).
  • the device 1 according to the invention with the telescopic tripod 53 arranged on the machine 8 allows the use of containers of different sizes directly at the machine workstation, it being very advantageous, for example for collection prints, to be able to use relatively small storage containers, for example 20 liter containers .
  • the curved end wall 36 (FIG. 1) advantageously stands with its spherical apex surface on the bottom of the container 2, substance being conveyed from the deepest region of the container 2 through the opening 360 located higher on the spherical surface.
  • the submersible pump unit 3 is conveniently immersed in the container 2 or guided out of it.
  • Fig. 6 the unit 3 is shown in the submerged top position.
  • the sleeve 37 is brought from an upper position into the lower position shown in FIG. 6 in order to remove substance from the cylinder 31.
  • FIG. 8 to 10 illustrate the embodiment of a device 1 according to the invention with a stand 54 set up next to the printing press 8.
  • the immersion pump unit 3 is suspended from such a stand 54, for example by means of a suspension element 390 (FIG. 1), via a rope and over a relatively large height can be raised and lowered. This allows containers with a relatively large volume to be used.
  • the pressure line 7 connected to the unit 3 is in a simple manner between the stand 54 and the printing machine 8 or - in the broken line - out over the stand head to the printing machine 8, the line 7 being led so high that the space is accessible under it .
  • the immersion tube 31 is lowered until it stands on the floor container or, when the container 2 is emptied, is brought into the position above it.
  • the stand 54 is equipped with a swiveling device which can be rotated about its standing axis. This has the advantage that the submersible pump unit 3 can be pivoted in the position lifted out of the container 2 via a washing pipe 74 arranged on the stand 54.
  • the washing tube 74 is part of the device 1 and its length and diameter are adapted to the immersion cylinder 31, and because of the narrow and slim design of the immersion tube 31, it is relatively small and therefore space-saving. After lowering the dip tube 31 into the washing tube 74, the dip tube 31 is cleaned.
  • the internal cleaning of the immersion tube 31 takes place in that the line 7 connected to the opening 380 is connected at its other end to a water connection 73.
  • water is conveyed at the opening 380 through the pipe 31 to the opening 360 and collected with the washing pipe 74.
  • the washing pipe 74 preferably comprises an inner spray nozzle ring and floor nozzles which can be connected to a pressurized water connection.
  • Such a washing pipe is also relatively small due to the slim, elongated immersion cylinder.
  • the connections and / or the directional operation of the motor 34 can be changed for cleaning according to the respective circumstances and optionally manufactured.
  • the conveying direction is reversed by means of a motor which can be switched in the direction of rotation, in order to pump residual substance back into the container from the distribution system with the line 7 connected to the substance tube 75 at 71.
  • water fed to the washing pipe 74 can be pumped into the distribution system for cleaning by reversing the conveying direction.
  • a device according to the invention can of course also be equipped with an inclined pump unit 3, such a device advantageously being designed with a correspondingly inclined washing pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Coating Apparatus (AREA)
EP93250310A 1992-11-12 1993-11-09 Dispositif d'alimentation de substances fluides à une machine utilisant ces substances Expired - Lifetime EP0601675B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9215639U 1992-11-12
DE9215639U DE9215639U1 (de) 1992-11-12 1992-11-12 Einrichtung zur Zuführung fließfähiger Substanzen an eine substanzverbrauchende Maschine

Publications (2)

Publication Number Publication Date
EP0601675A1 true EP0601675A1 (fr) 1994-06-15
EP0601675B1 EP0601675B1 (fr) 1997-02-19

Family

ID=6886119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250310A Expired - Lifetime EP0601675B1 (fr) 1992-11-12 1993-11-09 Dispositif d'alimentation de substances fluides à une machine utilisant ces substances

Country Status (3)

Country Link
EP (1) EP0601675B1 (fr)
AT (1) ATE149017T1 (fr)
DE (2) DE9215639U1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047887A1 (fr) * 1980-09-16 1982-03-24 Mathias Mitter Dispositif d'application d'un matériau (bain d'ennoblissement) à une surface au moyen d'un dispositif d'application
US4553512A (en) * 1985-01-17 1985-11-19 Gerald Showman Fluid pump assembly
EP0168366A1 (fr) * 1984-06-20 1986-01-15 Imo Ab Dispositif pour pomper l'huile
DE8805993U1 (de) * 1987-05-12 1988-06-30 Audi AG, 8070 Ingolstadt Innentank-Kraftstoffpumpenaggregat
DE4123384A1 (de) * 1991-07-15 1993-01-21 Leistritz Ag Kraftstoffoerderaggregat

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009974A (en) * 1975-02-12 1977-03-01 Nordson Corporation Method and apparatus for pumping viscous material
DE3135037A1 (de) * 1980-09-12 1982-09-23 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid "austragspumpe"

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047887A1 (fr) * 1980-09-16 1982-03-24 Mathias Mitter Dispositif d'application d'un matériau (bain d'ennoblissement) à une surface au moyen d'un dispositif d'application
EP0168366A1 (fr) * 1984-06-20 1986-01-15 Imo Ab Dispositif pour pomper l'huile
US4553512A (en) * 1985-01-17 1985-11-19 Gerald Showman Fluid pump assembly
DE8805993U1 (de) * 1987-05-12 1988-06-30 Audi AG, 8070 Ingolstadt Innentank-Kraftstoffpumpenaggregat
DE4123384A1 (de) * 1991-07-15 1993-01-21 Leistritz Ag Kraftstoffoerderaggregat

Also Published As

Publication number Publication date
DE59305495D1 (de) 1997-03-27
EP0601675B1 (fr) 1997-02-19
ATE149017T1 (de) 1997-03-15
DE9215639U1 (de) 1994-03-17

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