EP0226070B1 - 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 PDFInfo
- Publication number
- EP0226070B1 EP0226070B1 EP86116152A EP86116152A EP0226070B1 EP 0226070 B1 EP0226070 B1 EP 0226070B1 EP 86116152 A EP86116152 A EP 86116152A EP 86116152 A EP86116152 A EP 86116152A EP 0226070 B1 EP0226070 B1 EP 0226070B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- stroke
- actuating rod
- rod
- arrangement according
- 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.)
- Expired - Lifetime
Links
Images
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, in which at least one double pump is provided for each component, which has two alternately pumping, parallel connected individual pumps, in which each individual pump has a pump element delimiting a pump chamber, in particular a membrane, which is coupled on its side facing away from the pump chamber with one end of a reciprocating actuating rod, in which a motor is common to all actuating rods and in which an adjusting device for changing the mixing ratio by adjusting the effective stroke volume of the two Single pumps at least one double pump is provided.
- a known pump arrangement of this type (GB-A-2 147 056) the motor is combined with the one double pump in that the mutually facing cylinder spaces of the individual pumps are alternately placed under a vacuum and at atmospheric pressure with the aid of a valve.
- Such an integrated motor is limited in its application; Both the size of its pressure surface and the level of the pressure load are specified by the associated pump.
- the actuating rods of two double pumps are articulated to a swivel lever, the fixed inclined bearing of which can be adjusted in a central plane of the pump arrangement in order to change the mixing ratio of the two double pumps.
- the displacement pistons are the displacement pistons 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 can be changed by moving openings in the working cylinder which are connected to a refill chamber. 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 is based on the object of specifying a pump arrangement for the metered delivery of at least two components, in which the adjustable mixing ratio remains largely constant over time and a motor which is separate from the pumps is used.
- the motor is an axial piston motor separated from the individual pumps, the drive rod of which moves the actuating rods back and forth in synchronism via a driver, and in that the adjusting device is formed in that the actuating rod of the at least one double pump is divided, that the axial distance of the rod parts from one another can be changed symmetrically by a coupling device, and that the actuating rod have a variable ineffective initial stroke (idle stroke) in order to change the effective stroke volume of the associated pump elements.
- the main component can be pumped with the full motor stroke regardless of the adjustment. 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 proportional because of the common drive.
- 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 inside 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.
- 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 by a limited amount relative to the actuating rod, 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 displacement piston, and in that a valve opening towards the refill chamber forms the end faces of the actuating rod and displacer piston lying one on top of the other during the pressure stroke.
- 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 ends of the actuating rod are provided with a damping element which occurs on the pump element. This reduces noise.
- 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 that is not shown in detail.
- a drive rod 17 is connected to the piston 14 and is mounted in a guide 18 of the housing part 2 and in a guide 19 of the housing part 3.
- the housing 1 there are two double pumps, each consisting of a pair of single 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 operating rod 26 and two displacement pistons 27 and 28 on the driving ends of an operating rod 29.
- These displacement pistons are each immersed in 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 is connected to 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 an enlargement of 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 only begins 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 the pump arrangement.
- 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 consisting 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.
- Stops 173 on the inner plate 110 limit the backward movement of the displacer piston 125, even if the actuating rod 29 moves even further .
- a valve 174 is opened, which is formed between a sealing ring on the end face 175 of the displacer 125 and the end face 176 of the actuating rod 29.
- the displacer piston 125 is driven when it is pressed by the abutment of this end face 176 against the end face 175 of the displacer piston 125, while during the suction stroke the entrainment takes place via the entrainment surface 171, the spring 169 and the entrainment surface 170.
- the effective pressure stroke therefore only begins when the piston rod 29 takes the displacement piston 125 with it.
- 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.
- the coupling device 251 When the coupling device 251 is actuated, the end of the actuating rod 259 moves 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 which is equal to the working stroke V, is shown at the top in FIG. The funding volume would be zero here. In the middle, the actuating rod is at a distance U2 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 to the left over the full stroke from the position shown in FIG. 5, 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 actuating rod 429 shorten on both sides according to the line K. It is therefore possible to change the effective working volume via a fifty percent idle stroke U2, ie a fifty percent working stroke V / 2 (middle of FIG. 6) up to a hundred percent idle stroke L (top in FIG. 6).
- the illustrated exemplary embodiments can be varied in many ways without departing from the basic idea of the invention.
- 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.
- 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)
- Accessories For Mixers (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Details Of Reciprocating Pumps (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Closures For Containers (AREA)
- Rotary Pumps (AREA)
- External Artificial Organs (AREA)
Claims (11)
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 |
---|---|---|---|
DE3544016 | 1985-12-13 | ||
DE19853544016 DE3544016A1 (de) | 1985-12-13 | 1985-12-13 | Pumpenanordnung zur dosierten abgabe von mindestens zwei komponenten |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0226070A2 EP0226070A2 (fr) | 1987-06-24 |
EP0226070A3 EP0226070A3 (en) | 1989-01-25 |
EP0226070B1 true 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) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3737350A1 (de) * | 1987-11-04 | 1989-05-24 | Kopperschmidt Mueller & Co | Pumpenanordnung mit doppelpumpe |
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 |
DE69816345T2 (de) | 1998-05-24 | 2004-05-27 | Hewlett-Packard Indigo B.V. | Ladegerät für elektrostatisches drucksystem |
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 |
CA2406107A1 (fr) | 2000-04-18 | 2001-10-25 | Indigo N.V. | Position de transport de feuille et ecran de surveillance de blocage |
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. |
US20060051285A1 (en) * | 2004-09-07 | 2006-03-09 | The Tristel Company Limited | Chlorine dioxide generation |
US7807118B2 (en) * | 2004-09-07 | 2010-10-05 | Tristel Plc | Decontamination system |
US8642054B2 (en) * | 2004-09-07 | 2014-02-04 | Tristel Plc | Sterilant system |
DE102005060320A1 (de) * | 2005-12-16 | 2007-06-21 | Continental Aktiengesellschaft | Kompressoreinheit |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3039399A (en) * | 1959-12-07 | 1962-06-19 | Foregger Company Inc | Pump |
US3043227A (en) * | 1960-12-09 | 1962-07-10 | Hazeu F Everett | Pump and control therefor |
US3125003A (en) * | 1961-03-16 | 1964-03-17 | Diaphragm plate construction | |
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 |
US3318256A (en) * | 1964-02-20 | 1967-05-09 | Atomic Energy Authority Uk | Means for pressurising liquids |
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 |
CH503202A (de) * | 1969-02-06 | 1971-02-15 | Erard Etienne | Flüssigkeitspumpvorrichtung |
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 | |
GB2059516B (en) * | 1979-09-19 | 1983-09-07 | Seeger Corp | Two-component metering pumps |
JPS5933909Y2 (ja) * | 1980-06-27 | 1984-09-20 | 友衛 鈴木 | 往復動ポンプ |
US4392508A (en) * | 1981-04-15 | 1983-07-12 | Ryco Graphic Manufacturing, Inc. | Proportional mixing system with water motor drive |
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 |
GB2147056B (en) * | 1983-09-21 | 1986-11-12 | Loheat Ltd | Liquid proportioning devices |
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 |
-
1985
- 1985-12-13 DE DE19853544016 patent/DE3544016A1/de active Granted
-
1986
- 1986-11-21 DE DE8686116152T patent/DE3675509D1/de not_active Expired - Fee Related
- 1986-11-21 ES ES86116152T patent/ES2018467B3/es not_active Expired - Lifetime
- 1986-11-21 EP EP86116152A patent/EP0226070B1/fr not_active Expired - Lifetime
- 1986-11-21 AT AT86116152T patent/ATE58208T1/de not_active IP Right Cessation
- 1986-12-11 BR BR8606157A patent/BR8606157A/pt not_active IP Right Cessation
- 1986-12-11 US US06/940,623 patent/US4806079A/en not_active Expired - Fee Related
- 1986-12-12 JP JP61297455A patent/JPH0754118B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3675509D1 (de) | 1990-12-13 |
ATE58208T1 (de) | 1990-11-15 |
EP0226070A3 (en) | 1989-01-25 |
BR8606157A (pt) | 1987-09-22 |
EP0226070A2 (fr) | 1987-06-24 |
JPS62147066A (ja) | 1987-07-01 |
ES2018467B3 (es) | 1991-04-16 |
DE3544016C2 (fr) | 1988-05-11 |
DE3544016A1 (de) | 1987-06-19 |
US4806079A (en) | 1989-02-21 |
JPH0754118B2 (ja) | 1995-06-07 |
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