EP3725527B1 - Système distributeur de fluide - Google Patents

Système distributeur de fluide Download PDF

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Publication number
EP3725527B1
EP3725527B1 EP19170390.9A EP19170390A EP3725527B1 EP 3725527 B1 EP3725527 B1 EP 3725527B1 EP 19170390 A EP19170390 A EP 19170390A EP 3725527 B1 EP3725527 B1 EP 3725527B1
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EP
European Patent Office
Prior art keywords
fluid
diaphragm
tube
delivery system
outlet
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.)
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Application number
EP19170390.9A
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German (de)
English (en)
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EP3725527A1 (fr
Inventor
Sheng-Tsung Lee
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Individual
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Individual
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Priority to ES19170390T priority Critical patent/ES2913645T3/es
Priority to EP19170390.9A priority patent/EP3725527B1/fr
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Classifications

    • 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
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/20—Ink-removing or collecting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/20—Recovering printing ink

Definitions

  • the present invention relates to a fluid delivery system, especially to a fluid delivery system in which fluid is delivered and recycled uniformly under constant pressure and uniform volume flow rate.
  • fluid is pressurized by the pump to be delivered to the desired location through pipelines.
  • the pump is driven by an external engine for drawing and expelling the fluid continuously. Yet most of the engines are bulky and fuel consumption is required. Thus the engine is suitable for outdoor use where no power is provided. For indoor use or places easy to access to the power, the pump is usually driven by motors or electromagnetic means.
  • An air pump is widely used for ink delivery in ink printing machines.
  • a diaphragm mounted in the pump is driven by the alternating air pressure for ink delivery to an ink fountain and use in printing.
  • one end of an air pump 7 is connected to an ink fountain 71 and the other end thereof is connected to an ink tube 81 of an ink printing machine 8 while two ink fountain rollers 82 are disposed under the ink tube 81 and the sections of the two ink fountain rollers 82 are tangent to each other (in close contact with each other).
  • the ink tube 81 is located just above the position where the surfaces of the two ink fountain rollers 82 are in close contact and the two ink fountain rollers 82 are rotated from the lower to the upper in opposite directions respectively so that ink from the ink tube 81 will not fall through a gap between the contact surfaces of the two ink fountain rollers 82. Instead of flowing down, the ink from the ink tube 81 flows into a trough formed above the contact surfaces of the two ink fountain rollers 82 for being attached to the surface of each of the rotating ink fountain rollers 82.
  • a device and method for supplying printing ink to and carrying it off from a doctor blade device of an inking system of a rotary printing press and/ or for cleaning the doctor blade device are known, such fluid delivery system including a double diaphragm pump cooperating with an introducing pipeline and a return pipeline, a fluid storage unit, a fluid supply portion, and a bypass structure to reduce the supplied fluid volume to match the pump chamber outputs, said bypass structure being an additional return conduit connected to a second guiding tube of the introducing pipeline and provided with both of a control valve and an adjustable throttle or flow rate limiting valve.
  • the second guiding tube can be further connected to a second auxiliary return conduit with a corresponding second control valve and a throttle or flow limiting valve.
  • a primary object of the present invention to provide a fluid delivery system that includes a double diaphragm pump used for driving two diaphragms to draw in and expel fluid alternately and then the fluid flows in and out through two sets of inlets and outlets of the double diaphragm pump.
  • a double diaphragm pump used for driving two diaphragms to draw in and expel fluid alternately and then the fluid flows in and out through two sets of inlets and outlets of the double diaphragm pump.
  • a fluid delivery system according to the present invention as defined in claim 1 is provided.
  • FIG. 1 a schematic drawing showing structure of a fluid delivery system of an embodiment of the present invention is revealed.
  • the fluid in the system is delivered by the following steps.
  • liquid delivery system A includes a double diaphragm pump 1, an introducing pipeline 2, a return pipeline 3, a fluid storage unit 4, and a fluid supply portion 5.
  • the double diaphragm pump 1 consists of a pneumatic mechanism 10 mounted therein, a first diaphragm 11, a second diaphragm 12, a first inlet 13, a first outlet 14, a first fluid chamber 15, a second inlet 16, a second outlet 17, a second fluid chamber 18 and a plurality of check valves 19.
  • the first diaphragm 11 and the second diaphragm 12 are disposed on the pneumatic mechanism 10 that is provided with a lever 102 and an air-intake portion 101 that brings air therein for driving the first and the second diaphragms 11, 12 to move and act.
  • the first inlet 13 and the first outlet 14 are arranged at one end of the pneumatic mechanism 10 with the first diaphragm 11 while the first fluid chamber 15 is formed between the first diaphragm 11, the first inlet 13 and the first outlet 14.
  • the second inlet 16 and the second outlet 17 are disposed on another end of the pneumatic mechanism 10 with the second diaphragm 12 while the second fluid chamber 18 is formed between the second diaphragm 12, the second inlet 16 and the second outlet 17.
  • Each inlet and each outlet are provided with one of the check valves 19 correspondingly.
  • the introducing pipeline 2 is composed of a first guiding tube 21 and a second guiding tube 22. One end of the first guiding tube 21 and one end of the second guiding tube 22 are connected to the first inlet 13 and the first outlet 14 of the double diaphragm pump 1 respectively.
  • the return pipeline 3 includes a first return tube 31 and a second return tube 32, being connected to the second inlet 16 and the second outlet 17 of the double diaphragm pump 1 respectively.
  • the pipe diameter of the introducing pipeline 2 is the same as that of the return pipeline 3.
  • the fluid storage unit 4 used for supplying fluid required and receiving fluid returned is connected to the first guiding tube 21 and the second return tube 32.
  • the fluid supply portion 5 is used for supplying fluid required to the machine B and connected to the second guiding tube 22 and the first return tube 31.
  • the present invention can be applied to various machines used for transporting viscous liquids (such as oil, ink, liquid glucose, slurry, etc.).
  • viscous liquids such as oil, ink, liquid glucose, slurry, etc.
  • the above system A is used in combination with the delivery steps.
  • this embodiment is used in fluid (ink) transportation in the printing machine.
  • the machine B receiving fluid from the system A in this embodiment is a printing machine and the system A is responsible for ink delivery in the printing machine. That means ink supply in the printing machine is performed by the fluid delivery system A.
  • the system in the printing machine can be a closed fluid delivery system, a doctor blade chamber system, a conventional liquid delivery system, etc.
  • the present system is applied to a closed fluid delivery system and composed of a fluid storage unit 4 filled with ink therein, an introducing pipeline 2 for sending fluid, a return pipeline 3 for recycling fluid, a double diaphragm pump 1 that connects the introducing pipeline 2 and the return pipeline 3, and a fluid supply portion 5 for supplying fluid to a machine B.
  • the introducing pipeline 2 and the return pipeline 3 have the same pipe diameter. Then run the steps (a) and (b): providing a double diaphragm pump 1 with two sets of inlets and outlets.
  • a pneumatic mechanism 10 is mounted in the double diaphragm pump 1 and provided with a first diaphragm 11 and a second diaphragm 12 on two ends thereof, respectively.
  • the pneumatic mechanism 10 is provided with an air-intake portion 101 that brings air for driving the first and the second diaphragms 11, 12 to move and act.
  • a first inlet 13 and a first outlet 14 are arranged at one end of the pneumatic mechanism 10 with the first diaphragm 11 and a first fluid chamber 15 is formed between the first diaphragm 11, the first inlet 13 and the first outlet 14 (that's an action path of the first diaphragm 11).
  • the end of the pneumatic mechanism 10 with the second diaphragm 12 is provided with a second inlet 16 and a second outlet 17 while a second fluid chamber 18 is formed between the second diaphragm 12, the second inlet 16 and the second outlet 17 (that's an action path of the second diaphragm 12).
  • Each of the inlets as well as the outlets is provided with a check valve 19.
  • the first inlet 13 and the first outlet 14 are connected to the introducing pipeline 2 composed of a first guiding tube 21 and a second guiding tube 22.
  • One end of the first guiding tube 21 is connected to the first inlet 13 while the other end thereof is connected to a fluid storage unit 4 filled with ink therein.
  • One end of the second guiding tube 22 is connected to the first outlet 14 and the other end thereof is connected to a fluid supply portion 5 that is corresponding to an anilox roller of a printing machine (a machine).
  • a return pipeline 3 connects the fluid supply portion 5 with the double diaphragm pump 1 and the fluid storage unit 4.
  • the return pipeline 3 includes a first return tube 31 and a second return tube 32.
  • One end of the first return tube 31 is connected to the fluid supply portion 5 while the other end thereof is connected to the second inlet 16.
  • One end of the second return tube 32 is connected to the second outlet 17 and the other end thereof is connected to the fluid storage unit 4.
  • the fluid supply portion 5 not only provides ink required to the anilox roller of the printing machine but also removes redundant ink attached to the anilox roller. Then the ink removed is turned back to the fluid storage unit 4 by the return pipeline 3.
  • the pneumatic mechanism 10 of the double diaphragm pump 1 drives the first diaphragm 11 and the second diaphragm 12 to act.
  • the lever 102 drives the first diaphragm 11 to move toward the first fluid chamber 15 and cause ink in the first fluid chamber 15 moving toward the first outlet 14 and pushing the check valve 19.
  • the ink is flowing into the second guiding tube 22 to be delivered to the fluid supply portion 5.
  • the ink being pushed by the first diaphragm 11 makes the check valve 19 of the first inlet 13 close.
  • the second diaphragm 12 is moved away from the second fluid chamber 18 owing to the movement of the first diaphragm 11 toward the first fluid chamber 15 by the lever 102 so that a negative pressure is created in the second fluid chamber 18 and the check valve 19 of the second outlet 17 is drawn back to close the second outlet 17.
  • the check valve 19 of the second inlet 16 is pushed away from the hole, allowing ink in the first return tube 31 (intend to be recycled) to flow into the second fluid chamber 18.
  • step (d) ink in the second fluid chamber 18 is moved toward the second outlet 17 to push the check valve 19 of the second outlet 17 when the lever 102 drives the second diaphragm 12 to move toward the second fluid chamber 18.
  • the ink is flowing into the second return tube 32 to be delivered to the fluid storage unit 4.
  • the ink being squeezed pushes the check valve 19 of the second inlet 16 to close the second inlet 16 for blocking ink in the first return tube 31 to flow in.
  • the first diaphragm 11 is moved away from the first fluid chamber 15 owing to the movement of the second diaphragm 12 toward the second fluid chamber 18 by the lever 102 so that a negative pressure is created in the first fluid chamber 15 and the check valve 19 of the first outlet 14 is drawn back to close the first outlet 14.
  • the check valve 19 of the first inlet 13 is pushed off to open the first inlet 13, causing ink in the first guiding tube 21 from the fluid storage unit 4 to flow into the first fluid chamber 15.
  • a drain-back tube 6 is arranged between the second guiding tube 22 and the second return tube 32 and provided with a control valve 61.
  • the control valve 61 is open so that the second guiding tube 22 and the second return tube 32 communicate with each other.
  • ink in the second guiding tube 22 flows into the second return tube 32 through the drain-back tube 6.
  • ink originally inside the system pipelines is pushed out by the double diaphragm pump 1 and returned to the fluid storage unit 4, without the waste of ink.
  • fluid in the fluid storage unit 4 is replaced by cleaning solution or ink in different colors.
  • system A is turned on after the control valve 61 being closed and the fluid is delivered into the system pipelines by the alternately drawing and expelling mentioned above for cleaning pipelines or color changing during printing.
  • the present system is applied to a non-hermetic fluid delivery system.
  • the system A is composed of a fluid storage unit 4 filled with ink therein, an introducing pipeline 2 for delivering fluid, a return pipeline 3 for recycling fluid, a double diaphragm pump 1 that connects the introducing pipeline 2 and the return pipeline 3, and a fluid supply portion 5 for supplying fluid to a machine B.
  • a non-hermetic fluid delivery system is formed.
  • the steps in the operation process are the same as those mentioned above.
  • the present invention has the following advantages compared with the structure available now.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (3)

  1. Système distributeur de fluide configuré pour fournir un fluide à une machine, comprenant :
    une pompe à deux membranes (1) qui comprend un mécanisme pneumatique (10) monté en son sein et muni d'une première membrane (11), d'une seconde membrane (12), et d'une partie d'admission d'air (101) qui amène de l'air en son sein pour entraîner les première et seconde membranes (11, 12) à se déplacer et à agir à travers des trajets d'action, une première entrée (13) et une première sortie (14) qui sont disposées sur une extrémité du mécanisme pneumatique (10) avec la première membrane (11), une première chambre de fluide (15) formée entre la première membrane (11), la première entrée (13) et la première sortie (14), une seconde entrée (16) et une seconde sortie (17) qui sont disposées sur une autre extrémité du mécanisme pneumatique (10) avec la seconde membrane (12), une seconde chambre de fluide (18) formée entre la seconde membrane (12), la seconde entrée (16) et la seconde sortie (17), une pluralité de clapets anti-retour (19) dont chacun est disposé sur la première entrée (13), la première sortie (14), la seconde entrée (16) et la seconde sortie (17) de manière correspondante ;
    une conduite d'introduction (2) composée d'un premier tube de guidage (21) dont une extrémité est reliée à la première entrée (13) de la pompe à deux membranes (1), et d'un second tube de guidage (22) dont une extrémité est reliée à la première sortie (14) de la pompe à deux membranes (1) ;
    une conduite de retour (3) qui comprend un premier tube de retour (31) relié à la seconde entrée (16) de la pompe à deux membranes (1), et un second tube de retour (32) relié à la seconde sortie (17) de la pompe à deux membranes (1) ;
    une unité de stockage de fluide (4) utilisée pour fournir le fluide nécessaire et recevoir le fluide renvoyé et reliée au premier tube de guidage (21) et au second tube de retour (32) ; et
    une partie de fourniture de fluide (5) qui fournit le fluide nécessaire à la machine et reliée au second tube de guidage (22) et au premier tube de retour (31) ;
    dans lequel, dans un premier état de fonctionnement, du fluide dans l'unité de stockage de fluide (4) est amené à passer à travers la conduite d'introduction (2) et le trajet d'action de la première membrane (11) et à être distribué dans la partie de fourniture de fluide (5) pour être utilisé par la machine lorsque la pompe à deux membranes (1) applique une pression à la première membrane (11) ; du fluide dans la partie de fourniture de fluide (5) est amené à passer à travers la conduite de retour (3) et le trajet d'action de la seconde membrane (12), et renvoyé à l'unité de stockage de fluide (4) lorsque la pompe à deux membranes (1) applique une pression à la seconde membrane (12) ;
    caractérisé en ce que
    le système distributeur de fluide comprend en outre un tube de vidange (6) disposé entre le second tube de guidage (22) et le second tube de retour (32) et muni d'une vanne de commande (61) ;
    dans lequel, lorsque la vanne de commande (61) est fermée, le système distributeur de fluide est dans le premier état de fonctionnement ; et
    dans lequel, lorsque la vanne de commande (61) est ouverte, le second tube de guidage (22) et le second tube de retour (32) communiquent l'un avec l'autre par le tube de vidange (6) et le système distributeur de fluide est dans un second état de fonctionnement, dans lequel le fluide dans la conduite d'introduction (2) est renvoyé au second tube de retour (32) de la conduite de retour (3) et est ensuite renvoyé à l'unité de stockage de fluide (4).
  2. Système distributeur de fluide selon la revendication 1, dans lequel la conduite d'introduction (2) et la conduite de retour (3) présentent le même diamètre de tuyau.
  3. Système distributeur de fluide selon la revendication 1, dans lequel le système distributeur de fluide est un système distributeur de fluide fermé.
EP19170390.9A 2019-04-19 2019-04-19 Système distributeur de fluide Active EP3725527B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES19170390T ES2913645T3 (es) 2019-04-19 2019-04-19 Sistema de entrega de fluido
EP19170390.9A EP3725527B1 (fr) 2019-04-19 2019-04-19 Système distributeur de fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19170390.9A EP3725527B1 (fr) 2019-04-19 2019-04-19 Système distributeur de fluide

Publications (2)

Publication Number Publication Date
EP3725527A1 EP3725527A1 (fr) 2020-10-21
EP3725527B1 true EP3725527B1 (fr) 2022-03-30

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EP19170390.9A Active EP3725527B1 (fr) 2019-04-19 2019-04-19 Système distributeur de fluide

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EP (1) EP3725527B1 (fr)
ES (1) ES2913645T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020109973A1 (de) 2020-04-09 2021-10-14 Dürr Systems Ag Beschichtungsmittelpumpe, Beschichtungsanlage und zugehöriges Betriebsverfahren
JP2022098229A (ja) 2020-12-21 2022-07-01 キヤノン株式会社 液体吐出装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643124A (en) * 1985-05-13 1987-02-17 Ryco Graphic Manufacturing, Inc. Liquid coating supply system for a printing press blanket coater
US5003876A (en) * 1989-02-10 1991-04-02 The Ward Machinery Company Printing apparatus with dual inking system
DE10225681B4 (de) * 2002-06-10 2010-02-04 Windmöller & Hölscher Kg Verfahren und Vorrichtung zum Zu- und Abführen von Druckfarbe zu und von einer Rakelvorrichtung eines Farbwerks einer Rotationsdruckmaschine und/oder zum Reinigen der Rakelvorrichtung

Also Published As

Publication number Publication date
EP3725527A1 (fr) 2020-10-21
ES2913645T3 (es) 2022-06-03

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