EP0892174B1 - Pumpenkopf für eine Hubkolbenpumpe - Google Patents
Pumpenkopf für eine Hubkolbenpumpe Download PDFInfo
- Publication number
- EP0892174B1 EP0892174B1 EP19980113123 EP98113123A EP0892174B1 EP 0892174 B1 EP0892174 B1 EP 0892174B1 EP 19980113123 EP19980113123 EP 19980113123 EP 98113123 A EP98113123 A EP 98113123A EP 0892174 B1 EP0892174 B1 EP 0892174B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- suction
- valve
- plunger
- pump head
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/007—Cylinder heads
Definitions
- the invention relates to a pump head for a high-pressure plunger pump for a pressure range of at least 1500 bar; with a hollow body, which is designed as a one-piece, compact component, two end faces has, one of which faces the plunger and a cavity has, in which the suction valve is arranged, while in the opposite, the plunger facing end inserted a sleeve of the pressure valve and which is penetrated in the axial direction by a pressure line, wherein the suction valve is connected to a fluid source via at least one suction line and / or can be connected so that fluid enters the work area during the suction stroke is suckable, and wherein the pressure valve is connected to a pressure outlet is so that during the pressure stroke the sucked fluid to the pressure outlet is pushable.
- DE-OS 1 911 534 discloses a plunger pump with an insert body, which simultaneously the suction and pressure valve as well as the front area of the plunger, so that here a joint and thus a sealing area falls away.
- the clear opening is smaller than that Diameter of the suction valve so that it is impossible to retrofit the suction valve insert into the insert body.
- the insert body has to Suction valve are sprayed around, which is a significant, manufacturing Brings effort, the economic use of such a construction not allowed.
- a high-pressure cleaning device (DE 39 22 956 A1) is a high-pressure pump provided, in which the pump head from different individual parts is screwed together, as shown by the hatching in the drawing.
- the suction valve and the pressure valve with respect to the central axis of the pump piston both axially parallel and radially offset, so that it it is difficult to achieve particularly high pressures.
- a known axial piston pump (DE 43 38 896 A1) are in a pump head the pump piston and in its axial continuation the suction valve.
- the pressure valve is radially offset from the piston axis and thereby placed radially opposite the suction valve.
- the pressure valve is in one arranged from the pump head separate part that with the pump head by special Means is connected.
- a piston pump is known from DE utility model G 66 08 701, at which the pump head base body is also made of several parts. So are pressure and suction valve axially one behind the other, but in different, with each other by screwing or other parts to be connected. The high pressure plunger seal is not visible, it is in another Construction space accommodated.
- the known high-pressure plunger pump consists of several axially one behind the other arranged components put together: a plunger cylinder unit, wherein the plunger slides in a sealed work space is reciprocable; one opposite the end of the plunger Cross plate with high pressure lines; an attached suction valve unit, the low-pressure suction lines also run on their base body; one adjoining pressure valve unit, which by the cross plate and High-pressure line running through suction valve unit closes or releases; a distributor body with pressure collection channel in which several, similar pump heads with their pressure outlet realized via the pressure valve open.
- a valve cylinder unit is formed in which the essential Construction elements such as suction valve, (high) pressure valve and functional also the sealant for closing the working space of the receiving body are summarized.
- the sleeve can have functions of holding, picking up, adjusting and / or adjust (by means of spring elements) the pressure valve. Also the sleeve can be used to seal outside the pressure outlet area use, especially if it is made of such an elastic material, that it is radially elastically expandable.
- the receiving body of one or several lines is interspersed with the suction or pressure valve are coupled and lead to the work area of the receiving body, there is the possibility of a single, compact component, namely the one according to the invention Body, an easily and quickly assembled connection on the input side to the fluid source and on the output side, for example to a To create pressure gun.
- an annular bead to support the suction valve spring the suction lift is used, the assembly of the invention is simplified Pumphead.
- a concrete realization of the general idea of the invention is that the pressure and suction valve with the receiving body into a structural, common manageable whole are integrated.
- a one-piece housing is created to accommodate pressure valve, suction valve, high pressure seal and low pressure seal.
- the resulting, uniform pump head component is required only a seal in the area of the cylindrical working space in Direction to the piston or plunger drive arrangement, but can otherwise an extremely cost-effective mass production.
- the further installation or the assembly of the pump head in the entire pump unit can be accomplished quickly and comfortably.
- An axial arrangement is expedient piston, high pressure plunger seal, suction valve and pressure valve.
- the high-pressure plunger seal on the drive device is advantageous facing end, coaxially surrounding the piston skirt, arranged and pointing projections or a bead arranged around the plunger which leads to the protrude the inner wall of the receiving body surrounding the plunger.
- the bead or the projections can be made in one piece with the other sealing body his.
- An alternative, inexpensive version is for the bead to use a separate seal, especially an O-ring.
- the idea of the invention can be further developed in that the mouths of the suction and pressure lines from or into the wall of the receiving body arranged in a common section or area of the receiving body are.
- the area where the pressure valve is located is preferable (usually at the end of the drive device facing away from the plunger Receiving body).
- the pump head according to the invention can in an arrangement with at least one connected to the fluid source Suction manifold and with at least one with the pressure outlet of the Insert the pump head (from the outside) connected pressure collection channel.
- a plurality of pump heads with piston-cylinder mechanism be connected.
- the suction and Pressure collection channels formed in a common distributor block and / or are structurally integrated in it, with the mentioned, common and / or in one piece Section or area of the receiving body is connected so that the Suction and pressure collection channels with the suction or pressure lines and the Working space in the receiving body according to the invention are coupled. That's how they are Pressure and suction manifolds combined in a single component, what not only to significantly simplify production and processing, but also leads to assembly.
- Execution of the cylinder valve receiving body allows an arrangement with Realize six cylinders that work together on the suction and pressure collection channels are connected in the one-piece distribution block.
- the drive device for the reciprocating piston or plunger is realized with a swash plate known per se, whose axis of rotation sloping plane on the face of the parallel to the axis of rotation Plungers sliding, resulting in an inexpensive production.
- the one there realizable, small stroke can result from the aforementioned summary of Suction and pressure collection channels in a uniformly manageable distribution head can be compensated by there more than three pump heads or piston-cylinder units are connected.
- a common Swashplate six pistons or plungers in a cylindrical body drive what the double water or. Fluid delivery throughput means.
- Fig. 1 is a working with high pressure water Cleaning device shown.
- a control box 1 in which to Complete control and regulation of the pump process Microcomputer can be housed on a board, the following parameters can be set, call up or read off from a display 2: speed; Number of switching cycles; Total operating hours and reset of the operating hours counter; Input of user codes; Setting of maintenance intervals; modification the minimum and / or maximum pressure value; Display maximum and minimum Outlet pressure, both current and absolute; elapsed operating hours since maintenance and the remaining operating hours until the next maintenance.
- the cleaning water is sprayed out of a high pressure gun 3 which via a flexible hose 4 with the pump head 5 of a pump unit 6 is connected to drive device 7.
- the pump head 5 is essentially of a receiving body 8 made out, inside of which a cavity or working space 9 is formed, in which the protruding from the plunger base body 10 on the end face Plunger 11 is added to sliding suction and pressure lifting movements to perform in its longitudinal direction.
- a swash plate 12 known per se, which is generated by means of a motor shaft 13 is rotated.
- the swash plate 12 has an oblique to the motor shaft 13 or its inclined plane or ramp 14, what the free, front end 15 of the plunger base body 10 is sliding against.
- ramp 14 issues to plunger 10, 11 Lifting movements 16, which are in a bottom dead center 17 (shown in broken lines) and a top dead center 18 within the working space 9 of the receiving body 8 result.
- the movement from top dead center 18 to bottom dead center 17 corresponds to the suction stroke, and the reverse movement from bottom dead center 17 to top dead center 18 the pressure stroke.
- the plunger base 10 nearest end of the work space 9 is by means of a high pressure seal 19 completed, which surrounds the working shaft 11 and with its outer Front side rests on a guide bush 20 for the plunger shaft 11.
- the annular base body made of plastics, but can also be made of metallic alloys that are separated from elastic O-sealing ring 22 are surrounded. The latter also lies on the end face of the guide bush 20.
- the section of the receiving body 8 which has the working space 9 is on its Outer jacket surrounded by a sleeve 23, the towards the drive device 12, 13, 14 projecting front end 24 in an annular shoulder 25 the guide bushing 20 ends.
- Both the guide bushing 20 and the casing bushing 23 are each with their O-rings with their outer environment 22 provided.
- the working space 9 Seen in the direction of the pressure stroke movement immediately behind the top dead center 18, the working space 9 is provided with a radial extension 26, in which a suction valve 27 is arranged. This is countered by a suction valve spring 28 the pressure side end of the radial extension 26 is pressed; the latter is against one Ring bead 29 of a suction lift 30 supported.
- the suction valve 27 is from the suction valve spring 28 against the outputs of two or more suction lines 31 pressed by the receiving body 8 obliquely with respect to its central axis run to a suction manifold 32 (shown in broken lines).
- Both the suction lift catcher 30 and the suction valve 27 are of an axial, central pressure line 33 penetrates, which extends in the axial direction through the Receiving body 8 extends and on its facing away from the plunger 10, 11 End of a pressure valve ball 34 ends.
- This is from a pressure valve spring 35 via a conical pressure stroke catcher 36 against metallic sealing surfaces 37 of the receiving body 8 pressed at the outlet of the pressure line 33.
- Corresponding is the suction valve 27 by the suction valve spring 28 against metallic Sealing surfaces 37a pressed at the exits of the suction lines 31.
- the pressure stroke catcher 36 is guided in a lift guide sleeve 38, which also Compression valve spring 35 includes.
- the pressure valve components pressure valve spring 35, Pressure stroke catcher 36, stroke catcher guide sleeve 38 and partially pressure valve ball 34 are surrounded or held together by a plug-in tube 39, which at Pressurization can be expanded radially from the inside. This is a reinforcement the pressure and thus the sealing effect of further O-sealing rings 22a possible by this between the outer jacket of the plug tube 39 and the Environment, in particular the inner wall of the receiving body 8, as it were be "chambered".
- the plug tube 39 in the receiving body 8 forms the conclusion or pressure outlet 40 of the pump head according to the invention, which in the Pressure collection channel 41 opens for forwarding to the high pressure gun 3.
- the components are in the illustrated embodiment 39, 38, 36, 35, 34, 33, 31, 30, 28, 27, 19 together from the main body 8 held together into a manageable unit.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
- Fig. 1
- eine perspektivische Ansicht auf ein Reinigungsaggregat mit einer Hochdruckwasserpumpe,
- Fig. 2
- eine teilweise axial geschnittene Längsansicht auf den Pumpenkopf mit Antriebseinrichtung nach der Erfindung,
- Fig. 3i
- in einer Figur 2 entsprechend der Ansicht den vom Pumpenkopf herausgelösten Aufnahmekörper mit aufgenommenen Funktionskomponenten.
Claims (7)
- Pumpenkopf (5) für eine Hochdruck-Plungerpumpe, ausgelegt für einen Druckbereich von mindestens 1500 bar, mit einem hohlen Aufnahmekörper (8), dera) als einstückiges, kompaktes Bauteil ausgebildet ist,b) zwei Stimenden aufweist, von denen eines dem Plunger (10) zugewandt ist und einen Hohlraum aufweist, in dem das Saugventil (27) angeordnet ist, während in dem gegenüberliegenden, dem Plunger (10) abgewandten Stirnende eine Hülse (39) des Druckventils (34) eingesteckt ist, undc) in axialer Richtung von einer Druckleitung (33) durchsetzt wird, wobeid) das Saugventil (27) über wenigstens eine Saugleitung (31) mit einer Fluidquelle verbunden und/oder verbindbar ist, so dass während des Saughubs Fluid in den Arbeitsraum (9) ansaugbar ist, unde) das Druckventil (34) mit einem Druckausgang (40) verbunden ist, so dass während des Druckhubs das angesaugte Fluid zum Druckausgang (40) drückbar ist,f) der hohle Aufnahmekörper in seinem Inneren einen Arbeitsraum (9) für einen schaftartigen Fortsatz (11) des abwechselnde Saug- und Druck-Hubbewegungen (16) ausführenden Plungers (10) aufweist, sowieg) eine den Arbeitsraum (9) abschließende Hochdruck-Plungerabdichtung (19, 21), undh) einen Saughubfänger (30), der einerseits über einen Ringwulst (29) die das Saugventil (27) gegen die Dichtfläche (D) drückende Feder (28) abstützt, und an den andererseits das Saugventil (27) beim Abheben von dem Ventilsitz (D) anstößt.
- Pumpenkopf nach Anspruch 1, dadurch gekennzeichnet, daß das Druck- und Saugventil (34,27) mit dem Aufnahmekörper (8) zu einer baulichen, gemeinsam handhabbaren Gesamteinheit (34,27,8) integriert sind.
- Pumpenkopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Hochdruck-Plungerabdichtung (19,21,22) um den Plunger (10,11) herum angeordnete Vorsprünge oder wenigstens eine Wulst aufweist, die zu der den Plunger (10,11) umgebenden Innenwandung des Aufnahmekörpers (8) vorstehen.
- Pumpenkopf nach Anspruch 3, dadurch gekennzeichnet, daß die Wulst mittels eines separaten Dichtungs-, insbesondere O-Rings (22), realisiert ist.
- Pumpenkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß an oder in dem Aufnahmekörper (8) wenigstens ein mit dem Druckventil (34) zusammenwirkender Druckhubfänger (36) angeordnet ist.
- Pumpenkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mündungen der Saug- und Druckleitungen (31,33) aus der beziehungsweise in die Wandung des Aufnahmekörpers (8) in einem gemeinsamen Abschnitt oder Bereich des Aufnahmekörpers (8), vorzugsweise in dessen das Druckventil (34) aufweisenden Endbereich, angeordnet sind.
- Pumpenkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Aufnahmekörper (8) im Bereich seines den Arbeitsraum (9) aufweisenden Abschnitts auf seinem Außenmantel von einer Büchse (23) umgeben ist, die mit einem vorzugsweise büchsenförmigen Führungselement (20) einerseits und einem vorzugsweise ringförmigen Dichtungselement (22) andererseits gekoppelt ist.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19730550 | 1997-07-17 | ||
DE19730550 | 1997-07-17 | ||
DE29716906U | 1997-09-20 | ||
DE29716906U DE29716906U1 (de) | 1997-07-17 | 1997-09-20 | Pumpenkopf für eine Hub-Kolbenpumpe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0892174A2 EP0892174A2 (de) | 1999-01-20 |
EP0892174A3 EP0892174A3 (de) | 1999-05-26 |
EP0892174B1 true EP0892174B1 (de) | 2001-10-31 |
Family
ID=26038354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980113123 Expired - Lifetime EP0892174B1 (de) | 1997-07-17 | 1998-07-15 | Pumpenkopf für eine Hubkolbenpumpe |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0892174B1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10146289A1 (de) * | 2001-05-17 | 2002-11-21 | Juergen Weigel & Herbert Eberh | Verfahren zur Steuerung eines Hochdruckreinigungsgeräts |
DE102006009855A1 (de) * | 2006-03-03 | 2007-09-06 | Alfred Kärcher Gmbh & Co. Kg | Hochdruckreinigungsgerät und Verfahren zu seiner Steuerung und Regelung |
ITTO20110992A1 (it) * | 2011-10-29 | 2012-01-28 | Nuove Tecnologie Applicate S R L | Sistema dotato di unita' pompante ad alta pressione e bassa portata, in particolare per pulizie |
CN102755972B (zh) * | 2012-07-27 | 2015-10-21 | 广东电网公司佛山供电局 | 带电水冲洗射流压力控制装置及其控制方法 |
DE102012219621A1 (de) * | 2012-10-26 | 2014-04-30 | Robert Bosch Gmbh | Kolbenpumpe |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB611057A (en) * | 1945-10-10 | 1948-10-25 | Prec Developments Co Ltd | Improvements relating to valve arrangements for reciprocating hydraulic pumps |
DE6608701U (de) * | 1968-09-17 | 1971-10-14 | Pumpenfabrik Urach | Kolbenpumpe. |
DE1911534A1 (de) * | 1969-03-07 | 1970-09-24 | Tuchenhagen Otto | Plunger-Pumpe |
US3811801A (en) * | 1972-05-30 | 1974-05-21 | Ingersoll Rand Co | Multi-plunger reciprocating pump |
US4412792A (en) * | 1981-01-21 | 1983-11-01 | The Oilgear Company | Intensifier pump with integrated check valve |
DE3248622C2 (de) | 1982-12-30 | 1985-10-17 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Hochdruckreinigungsgerät |
DE3404520C2 (de) | 1984-02-09 | 1997-01-09 | Uraca Pumpen | Pumpe oder Hydraulikanlage |
DE3922956A1 (de) | 1989-07-12 | 1991-01-17 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgeraet |
EP0414955A1 (de) | 1989-09-01 | 1991-03-06 | Alfred Kärcher GmbH & Co. | Hochdruckkolbenpumpe für Reinigungsgeräte oder dergleichen |
DE4338896C2 (de) | 1993-11-15 | 1997-03-13 | Suttner Gmbh & Co Kg | Axialkolbenpumpe |
DE19530012A1 (de) * | 1995-08-16 | 1997-02-20 | Bosch Gmbh Robert | Hydraulikgehäuseblock mit einer Kolbenpumpe |
DE19604132C2 (de) | 1996-02-06 | 2000-04-13 | Hammelmann Paul Maschf | Hochdruckplungerpumpe, vorzugsweise für Arbeitsdrücke oberhalb 2.000 bar |
-
1998
- 1998-07-15 EP EP19980113123 patent/EP0892174B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0892174A2 (de) | 1999-01-20 |
EP0892174A3 (de) | 1999-05-26 |
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