EP0226070A2 - Dispositif de pompage pour débiter des quantités prédéterminées d'au moins deux composants - Google Patents

Dispositif de pompage pour débiter des quantités prédéterminées d'au moins deux composants Download PDF

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Publication number
EP0226070A2
EP0226070A2 EP86116152A EP86116152A EP0226070A2 EP 0226070 A2 EP0226070 A2 EP 0226070A2 EP 86116152 A EP86116152 A EP 86116152A EP 86116152 A EP86116152 A EP 86116152A EP 0226070 A2 EP0226070 A2 EP 0226070A2
Authority
EP
European Patent Office
Prior art keywords
pump
actuating rod
rod
stroke
displacement
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
EP86116152A
Other languages
German (de)
English (en)
Other versions
EP0226070A3 (en
EP0226070B1 (fr
Inventor
Wolfgang Kuhn
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.)
Graco Verfahrenstechnik GmbH
Original Assignee
Kopperschmidt-Muller GmbH and Co KG
Boellhoff Verbindungstechnik GmbH
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 Kopperschmidt-Muller GmbH and Co KG, Boellhoff Verbindungstechnik GmbH filed Critical Kopperschmidt-Muller GmbH and Co KG
Priority to AT86116152T priority Critical patent/ATE58208T1/de
Publication of EP0226070A2 publication Critical patent/EP0226070A2/fr
Publication of EP0226070A3 publication Critical patent/EP0226070A3/de
Application granted granted Critical
Publication of EP0226070B1 publication Critical patent/EP0226070B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time

Definitions

  • the invention relates to a pump arrangement for the metered delivery of at least two components with an adjustable mixing ratio, with a double pump having two alternately delivering individual pumps, in which each individual pump has a pump element delimiting a pump chamber, in particular a membrane, on its side facing away from the pump chamber with one end of an actuating rod driven back and forth by a motor, in particular a pneumatic axial piston motor, and with an adjusting device for changing the mixing ratio by adjusting the effective stroke volume of at least one individual pump.
  • the displacement pistons are provided at the ends of the piston rod of a pneumatic axial piston motor.
  • the drive can also take place by means of a rotating eccentric, which is arranged between the two sections of a divided actuating rod.
  • One working cylinder is axially adjustable from the free end face, so that the effective stroke volume and thereby the mixing ratio is changed by moving openings in the working cylinder which are connected to a refill chamber can be. If this adjustment device is present, the membrane of the associated individual pump cannot extend coaxially to the displacement piston, but must be arranged in a lateral extension of the housing.
  • Each of the two individual pumps conveys a component of a product, such as paint, varnish, resin or the like, the mixing ratio being adjustable using the adjustment device.
  • a component of a product such as paint, varnish, resin or the like
  • the mixing ratio being adjustable using the adjustment device.
  • the two individual pumps are always operated alternately, the two components are fed at different times. In many cases, this is annoying.
  • the components are therefore first placed in a mixing container. Otherwise, the composition of a color or the curing behavior of a varnish would change during application due to the fluctuating mixing ratio.
  • the invention has for its object to provide a pump arrangement for the metered delivery of at least two components, in which the adjustable mixing ratio remains largely constant over time.
  • This object is achieved in that at least one double pump is provided for each component, the alternatingly delivering single pumps are connected in parallel, that the actuating rods of all double pumps are connected to the motor in terms of drive, and that both single pumps have at least one double pump with stroke volume adjustment devices which are connected to each other for the purpose of symmetrical adjustment by a coupling device.
  • each component Since alternately actuated individual pumps are provided for each component, each component is delivered with a quantity that is approximately constant over time. The delivery rates of the components are due to the common drive proportional.
  • the coupling device ensures that the adjustment devices assigned to a double pump can only be actuated together. It is therefore ensured that both individual pumps each deliver the same stroke volume and therefore no cyclical changes in the mixing ratio can occur. It is thus possible for the components to be fed directly to a spray or spray gun in a mixing room without prior calming, so that the mixing takes place only within the gun or even only in the spray jet or when it hits the object to be coated.
  • a driver connecting the actuating rods to the motor can be moved back and forth in a space between two housing parts, each of which has a working cylinder and a pump element of each double pump and a guide for a drive rod of the motor , and that the motor is arranged on the outside of one housing part.
  • the pump elements of a housing part can be formed by a common membrane plate. This simplifies the assembly of the housing parts.
  • a refill chamber common to all the displacements located therein is provided in each housing part.
  • the entire cavity of the housing part outside the working cylinder and the guide of the drive rod can be used as a refill chamber.
  • the coupling device is particularly advantageously arranged in the free space and is accessible from the outside. You can therefore easily make the desired adjustment from the outside.
  • the actuating rod is divided into at least one double pump and that the distance between the rod parts from one another can be changed by the coupling device in order to give the actuating rod a variable ineffective initial stroke (idle stroke) and thereby to change the effective stroke volume of the associated pump elements. Since the rod parts are adjacent to each other, there is a simple coupling device. With the help of the variable empty stroke, the delivery volume can be changed easily.
  • the coupling device can be formed by a turnbuckle sleeve which has a torque engagement surface and is in engagement with one rod part via a right-hand thread and with the other rod part via a left-hand thread.
  • the ends of the actuating rod are each provided with a displacer piston that can be displaced in a working cylinder and if the displacement of each working cylinder is connected to a liquid-filled working chamber on the side of the pump element facing away from the pump chamber, i.e. a hydraulic coupling between the actuating rod and the pump element takes place, it is recommended that that housing-fixed openings, which are connected to a refill chamber, are provided in the working cylinders.
  • the variable idle stroke results from the different initial position of the displacer with respect to the openings.
  • each displacement piston is sealed in the working cylinder with a sealing ring and is axially displaceable relative to the actuating rod by a limited amount, that its drive during the pressure stroke by contacting an end face of the actuating rod on the end face of the displacer piston facing away from the displacement and during the suction stroke by means of two oppositely directed driving surfaces on the actuating rod and displacer and that a valve opening towards the refill chamber is formed between the end faces of the actuating rod and displacer located on the pressure stroke. Because of the sealed displacement piston, leakage losses during the pressure stroke can be practically completely avoided, and therefore changes in the mixing ratio that could occur due to different leakage losses.
  • a spring is connected between the driving surfaces and that a stop is provided which stops the return movement of the displacement piston during the suction stroke before the actuating rod reaches its end position.
  • the refill valve remains closed until the end of the suction stroke, regardless of the setting of the adjustment device. A return of the membrane to the starting position is therefore also possible without a return spring or with a weak return spring.
  • a mechanical coupling between the actuating rod and the pump element can also be provided.
  • the pump elements can be pressed against an end stop by a return spring and that the ends of the actuating rod engage the pump element in a force-locking manner.
  • the pump arrangement illustrated in FIG. 1 has a housing 1 which consists of two housing parts 2 and 3 which are connected to one another by a base 4.
  • the housing part 2 consists of an outer plate 5, an intermediate part 6 and an inner plate 7.
  • the housing part 3 consists of an outer plate 8, an intermediate part 9 and an inner plate 10.
  • Between the outer plate 5 and the intermediate part 6 is a common membrane plate 11 , a common membrane plate 12 clamped between the outer plate 8 and the intermediate part 9.
  • a pneumatic axial piston motor 13 is illustrated on the side next to the housing part 2, the piston 14 of which is moved back and forth in a cylinder 15 with the aid of compressed air. The reversal takes place with a slide control device 16, which is not illustrated in detail.
  • a drive rod 17 is connected to the piston 14 and is guided in a guide 18 of the housing part 2 and! is mounted in a guide 19 of the housing part 3.
  • the housing 1 there are two double pumps, each; consist of a pair of individual pumps 20, 21 or 22 and 23. They are each assigned to a component and therefore connected in parallel.
  • two displacement pistons 24 and 25 are provided on the driving ends of an actuating rod 26 and two displacement pistons 27 and 28 on the driving ends of an actuating rod 29.
  • These displacement pistons each dip into working cylinders 30 to 34, which are formed in the intermediate parts 6 and 9.
  • the actuating rods 26 and 29 are pushed axially back and forth by the drive rod 17 via a yoke-like driver 35.
  • each pump has a pump element 36 in the form of a membrane, which separates a pump chamber 37 from a liquid-filled working space 38, which communicates with the displacement 39 of the associated working cylinder. Therefore, the pump element 36 is displaced during the pressure stroke of the displacement piston in the sense of reducing the size of the pump chamber 37, as is illustrated in the drawing for the individual pumps 20 and 22. In contrast, during the suction stroke, the pump element 36 is displaced in the sense of enlarging the pump chamber 37, as is illustrated in the drawing for the individual pumps 21 and 23.
  • both housing parts 2 and 3 there is a refill space 40 and 41, respectively, which is connected to the displacement 39 via an opening 42 fixed to the housing when the end face 43 of the associated displacement piston 25 releases the opening in the area of the suction-side dead center.
  • the effective pressure stroke is only beginning! when this opening is closed again.
  • the actuating rod 29, as shown in FIGS. 1 and 3 consists of two rod parts 46 and 47.
  • the rod part 46 has a left-hand thread as the adjusting device 49 and the rod part 47 has an adjusting device 50 a right-hand thread.
  • the coupling device 51 is a turnbuckle sleeve with a hexagon as a torque engagement surface 52 and an internal left-hand thread 53 and an internal-right-hand thread 54. By rotating this coupling device 51, the distance between the rod parts 46 and 47 is changed symmetrically, so that the stroke volumes of the Individual pumps 22 and 23 can be changed by the same values.
  • the coupling device 51 is located in an externally accessible space 55 between the two housing parts 2 and 3, the desired change in volume can be carried out comfortably. If the total delivery rate is to be changed, this can be achieved by throttling the air flow that drives the motor 13 or by limiting the stops of the piston 14.
  • Fig. 2 shows schematically the circuit of Pumpenan - order.
  • the control device 16 is supplied with compressed air from a compressed air source 56.
  • the suction connections T of the pumps 20 and 21 are connected via a line system to a reservoir 58 for a first component and the suction connections T of the individual pumps 22 and 23 via a line system 59 to a reservoir 60 for a second component.
  • the pressure connections P of the individual pumps 20 and 21 are connected in parallel via a line system 61 and connected to the connection 62 of a two-component spray device 63.
  • the pressure connections P of the individual pumps 22 and 23 are connected in parallel via a line system 64 and connected to a connection 65 of the spray device 63.
  • a spray jet of one component each is simultaneously delivered to the spray nozzles 66 and 67 of this spray device.
  • the components mix in the spray jet and when they hit the material to be coated.
  • a modified displacement piston 125 is illustrated on the right in FIG. 3, which is guided in its working cylinder 131 in a sealed manner with a sealing ring 168. It is axially displaceable relative to the actuating rod 29 by a limited amount against the force of a spring 169. This extends between a driving surface 170 on the displacer piston 125 and an opposing driving surface 171 on a head 172 connected to the actuating rod 29 via a pin .
  • the single pump 222 has a membrane-like pump element 236, which is clamped between the housing parts 205 and 206. It is reinforced by an insert 277, which has a screwed-in stop element 278 on the outside. A return spring 279 extends between the latter and the housing part 206 and forces the pump element 236 into the illustrated rest position.
  • the actuating rod 229 consists of a rod part 246 with left-hand thread 249 and a rod part 247 with right-hand thread 250. The two threads 249 and 250 engage in a hexagon nut 252 of the coupling device 251.
  • the nut 252 is located between two arms of a driver 235.
  • the actuating rod 229 In the illustrated position, the actuating rod 229 has its greatest length. It rests with the damping elements 282 on the pump elements 236. When actuated by the motor 13, the pump elements 236 therefore carry out the full working stroke V. When the clutch device 251 is actuated, this shifts End of the actuating rod 259 in one end position along the characteristic curve K. Therefore, the actuating rod must first undergo an idle stroke before the pump element; 236 is taken. The effective working stroke and the delivery rate are reduced accordingly.
  • the complete idle stroke L is drawn in at the top in FIG. 4 and is: equal to the working stroke V.
  • the funding volume would be zero here.
  • the actuating rod In the middle, the actuating rod is at a distance L / 2 from the stop element 278. In this case, the delivery volume would correspond to half of the complete working stroke V. The same applies to the single pump actuated by the rod part 247.
  • the pump element 336 is provided with a return spring 379.
  • a support plate 383 serves as a stop.
  • a hydraulic coupling is provided between the displacement piston 327 and the pump element 336. If the rod part 346 moves from the position shown below in FIG. 5 to the left over the full stroke, an effective working stroke V results and the delivery volume of the individual pump 322 is correspondingly large.
  • the actuating rod 329 can be shortened by means of the coupling device 351 . Accordingly, the displacer moves in the right end position along the line K to the right. It is illustrated at the top in FIG.
  • the actuating rod 429 is provided at both ends with a valve head 484, in which a sealing ring 485 is arranged. The latter cooperates with the end face 475 of the displacement piston 425 to form a valve 474.
  • a plurality of ribs 486 centrally guide a rod 487 supporting the head 472 in the displacement piston 425.
  • the idle stroke is negligible.
  • the result is a 100 percent working stroke V.
  • the actuating rod 429 can in turn be shortened on both sides according to the line K. It is therefore possible to change the effective working volume via a fifty percent idle stroke L / 2, that is to say a fifty percent working stroke V / 2 (middle of FIG. 6) up to a hundred percent idle stroke L (top in FIG. 6).
  • the stroke volumes can also be adjusted in that the displacement pistons are not adjustable relative to one another, but rather the working cylinders carrying the openings 42, 45. If their adjustment devices face each other in the free space 55, they can be adjusted symmetrically with a common coupling device.
  • other known motors for example rotating motors with an eccentric, can also be used.
  • Disc pistons known per se can also be considered as pump elements. Instead of the illustrated two double pumps three or more double pumps can also be driven by one motor.
  • the associated actuating rods can run parallel to one another and can be arranged at the same angular distance on a circle around the drive rod of the motor, the driver having three or more arms offset from one another by the same angle instead of two arms lying opposite one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Accessories For Mixers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • External Artificial Organs (AREA)
  • Rotary Pumps (AREA)
  • Closures For Containers (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP86116152A 1985-12-13 1986-11-21 Dispositif de pompage pour débiter des quantités prédéterminées d'au moins deux composants Expired - Lifetime EP0226070B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86116152T ATE58208T1 (de) 1985-12-13 1986-11-21 Pumpenanordnung zur dosierten abgabe von mindestens zwei komponenten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853544016 DE3544016A1 (de) 1985-12-13 1985-12-13 Pumpenanordnung zur dosierten abgabe von mindestens zwei komponenten
DE3544016 1985-12-13

Publications (3)

Publication Number Publication Date
EP0226070A2 true EP0226070A2 (fr) 1987-06-24
EP0226070A3 EP0226070A3 (en) 1989-01-25
EP0226070B1 EP0226070B1 (fr) 1990-11-07

Family

ID=6288319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116152A Expired - Lifetime EP0226070B1 (fr) 1985-12-13 1986-11-21 Dispositif de pompage pour débiter des quantités prédéterminées d'au moins deux composants

Country Status (7)

Country Link
US (1) US4806079A (fr)
EP (1) EP0226070B1 (fr)
JP (1) JPH0754118B2 (fr)
AT (1) ATE58208T1 (fr)
BR (1) BR8606157A (fr)
DE (2) DE3544016A1 (fr)
ES (1) ES2018467B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314994A1 (fr) * 1987-11-04 1989-05-10 Böllhoff Verfahrenstechnik GmbH & Co. KG Dispositif de pompage avec double pompe

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0256515A (ja) * 1988-08-23 1990-02-26 Olympus Optical Co Ltd 変倍レンズ
IL100020A0 (en) * 1991-11-11 1992-08-18 Cubital Ltd Pump
US6912952B1 (en) 1998-05-24 2005-07-05 Hewlett-Packard Indigo B.V. Duplex printing system
JP2002517016A (ja) 1998-05-24 2002-06-11 インデイゴ ナムローゼ フェンノートシャップ プリントシステム
DE19840365A1 (de) * 1998-09-04 2000-03-09 Bran & Luebbe Membrankolbenpumpe
US6823786B1 (en) 1999-11-07 2004-11-30 Hewlett-Packard Indigo B.V. Tandem printing system with fine paper-position correction
DE19958829C1 (de) * 1999-11-30 2001-08-02 Mannesmann Ag Brennstoffzellensystem mit einer Vorrichtung zum Zuleiten von Brennstoff
DE60029016T2 (de) 2000-04-18 2007-01-25 Hewlett-Packard Indigo B.V. Vorrichtung zur anzeige einer papierstau- und transportposition
US6363234B2 (en) 2000-11-21 2002-03-26 Indigo N.V. Printing system
FR2868337B1 (fr) * 2004-03-31 2006-05-26 Commissariat Energie Atomique Dispositif de mesure des cinetiques de nucleation primaire.
US8642054B2 (en) * 2004-09-07 2014-02-04 Tristel Plc Sterilant system
US7807118B2 (en) * 2004-09-07 2010-10-05 Tristel Plc Decontamination system
US20060051285A1 (en) * 2004-09-07 2006-03-09 The Tristel Company Limited Chlorine dioxide generation
DE102005060320A1 (de) * 2005-12-16 2007-06-21 Continental Aktiengesellschaft Kompressoreinheit

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Publication number Priority date Publication date Assignee Title
US3039399A (en) * 1959-12-07 1962-06-19 Foregger Company Inc Pump
DE1528599A1 (de) * 1964-02-20 1969-07-24 Atomic Energy Authority Uk Geraet zum Unterdrucksetzen von Fluessigkeiten
CH503202A (de) * 1969-02-06 1971-02-15 Erard Etienne Flüssigkeitspumpvorrichtung
DE3031067A1 (de) * 1979-09-19 1981-04-09 Seeger Corp., Saint Paul, Minn. Dosierpumpe fuer zwei komponenten
US4392508A (en) * 1981-04-15 1983-07-12 Ryco Graphic Manufacturing, Inc. Proportional mixing system with water motor drive
GB2147056A (en) * 1983-09-21 1985-05-01 Loheat Ltd Liquid proportioning devices

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US3043227A (en) * 1960-12-09 1962-07-10 Hazeu F Everett Pump and control therefor
FR1317767A (fr) * 1961-03-16 1963-05-08
DE1453597C3 (de) * 1962-12-04 1973-12-06 Orlita Kg, 6300 Giessen Membranpumpe mit regelbarer For dermenge
FR1350149A (fr) * 1962-12-15 1964-01-24 Pompage de fluides
US3168011A (en) * 1963-09-19 1965-02-02 Worthington Corp Reversible pneumatic actuator
US3350190A (en) * 1963-12-18 1967-10-31 Owens Illinois Inc Spray mist proportioning system for glass machine
US3330211A (en) * 1964-08-12 1967-07-11 Flintkote Co Dual pump apparatus
DE1454898B2 (de) * 1965-02-19 1971-09-16 Richard Zippel & Co, KG, 3440 Esch wege Vorrichtung zum ausstossen einer einstellbaren genau dosier ten menge der komponenten eines fluessigen mehrkomponenten kunststoffes
US3320211A (en) * 1965-09-17 1967-05-16 Pittsburgh Plate Glass Co Polycarbonates of hydroxy ethyl ethers
FR1505334A (fr) * 1965-12-02 1967-12-15 Rhone Poulenc Sa Nouveaux complexes du ruthénium
GB1202877A (en) * 1967-12-04 1970-08-19 Expandite Ltd Improvements in apparatus for delivering viscous liquids
US3769879A (en) * 1971-12-09 1973-11-06 A Lofquist Self-compensating diaphragm pump
US3779669A (en) * 1972-05-22 1973-12-18 Wooster Brush Co Pump spray unit
DE2312647A1 (de) * 1973-03-14 1974-09-19 Lupert Geb Ruck Rosemarie Dosierpumpe, insbesondere zum dosieren mehrerer kunstoffkomponenten
CH618787A5 (fr) * 1977-07-26 1980-08-15 Spuehl Ag
JPS5933909Y2 (ja) * 1980-06-27 1984-09-20 友衛 鈴木 往復動ポンプ
US4462764A (en) * 1981-11-12 1984-07-31 Zandt Hillard C Van Hydraulic long stroke pump
DE3233987C2 (de) * 1982-09-14 1985-10-17 Erich 7777 Salem Roser Membranpumpe mit Taumelringantrieb
JPS60192888A (ja) * 1984-03-13 1985-10-01 Yamada Yuki Seizo Kk 複数種流動材定量吐出装置
DE3542926A1 (de) * 1985-12-04 1987-06-11 Kopperschmidt Mueller & Co Pumpe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039399A (en) * 1959-12-07 1962-06-19 Foregger Company Inc Pump
DE1528599A1 (de) * 1964-02-20 1969-07-24 Atomic Energy Authority Uk Geraet zum Unterdrucksetzen von Fluessigkeiten
CH503202A (de) * 1969-02-06 1971-02-15 Erard Etienne Flüssigkeitspumpvorrichtung
DE3031067A1 (de) * 1979-09-19 1981-04-09 Seeger Corp., Saint Paul, Minn. Dosierpumpe fuer zwei komponenten
US4392508A (en) * 1981-04-15 1983-07-12 Ryco Graphic Manufacturing, Inc. Proportional mixing system with water motor drive
GB2147056A (en) * 1983-09-21 1985-05-01 Loheat Ltd Liquid proportioning devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314994A1 (fr) * 1987-11-04 1989-05-10 Böllhoff Verfahrenstechnik GmbH & Co. KG Dispositif de pompage avec double pompe

Also Published As

Publication number Publication date
ATE58208T1 (de) 1990-11-15
EP0226070A3 (en) 1989-01-25
EP0226070B1 (fr) 1990-11-07
JPS62147066A (ja) 1987-07-01
ES2018467B3 (es) 1991-04-16
BR8606157A (pt) 1987-09-22
US4806079A (en) 1989-02-21
DE3544016A1 (de) 1987-06-19
DE3544016C2 (fr) 1988-05-11
DE3675509D1 (de) 1990-12-13
JPH0754118B2 (ja) 1995-06-07

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