EP0892174A2 - Pumpenkopf für eine Hubkolbenpumpe - Google Patents
Pumpenkopf für eine Hubkolbenpumpe Download PDFInfo
- Publication number
- EP0892174A2 EP0892174A2 EP98113123A EP98113123A EP0892174A2 EP 0892174 A2 EP0892174 A2 EP 0892174A2 EP 98113123 A EP98113123 A EP 98113123A EP 98113123 A EP98113123 A EP 98113123A EP 0892174 A2 EP0892174 A2 EP 0892174A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- suction
- valve
- receiving body
- 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.)
- Granted
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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 piston, in particular high-pressure plunger pump, of a hollow receiving body with a working space in has its interior. Inside is a plunger or plunger for execution alternating suction and pressure stroke movements are slidably arranged and drivable. During its suction stroke, a suction valve is coupled to a fluid source actuated so that fluid is sucked into the work space. During the pressure stroke becomes a pressure valve connected to a pressure outlet of the pump head actuated, whereby the previously sucked fluid is pressed to the pressure outlet.
- 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 state of the art of the type mentioned at the outset is from DE 196 04 132 A1 known, wherein a high pressure plunger pump for working pressures above 2,000 bar is described.
- the pressure valve is arranged in a pump head an inner body is screwed, wherein the plunger or reciprocating piston is movable is recorded.
- the suction valve In the border area between the inner body and the pump head is the suction valve.
- 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 well-known high-pressure plunger pump is composed of several components arranged axially one behind the other: one Plunger cylinder unit, in which the plunger can be moved back and forth in a sealed working space; a transverse plate with high-pressure lines opposite the front end of the plunger; a suction valve unit connected therein, on the base of which the low-pressure suction lines also run; an adjoining pressure valve unit, which high-pressure line running through the cross plate and the suction valve unit closes or releases a distributor body with a pressure collection channel into which several similar pump heads with their pressure output realized via the pressure valve open Large number of parting lines, which have to be sealed due to the high fluid pressures. A secure seal can only be achieved by screwing with extremely high tightening torques. This leads not only to an increased assembly effort, but also to high demands
- the invention has for its object in a pump head of the beginning mentioned type to improve the high pressure seal and at the same time the constructive Simplify construction.
- Pressure ranges from 1500 to 2700 bar operating pressure can be realized, standard components for example for the Piston or plunger drive can be used and service lives of over a thousand operating hours be feasible.
- a valve cylinder unit is formed in which the essential construction elements such as suction valve, (high) pressure valve and expediently also the sealing means for closing the working space of the receiving body are summarized.
- a concrete realization of the general idea of the invention is that the pressure and suction valve and the high pressure plunger seal simultaneously inside of or arranged in the receiving body, installed or in the side wall are let in.
- a one-piece housing for receiving is created of pressure valve, suction valve, high pressure seal and low pressure seal.
- the resulting uniform pump head component requires only one Sealing in the area of the cylindrical working space in the direction of the piston or Plunger drive arrangement, but can otherwise be extremely inexpensive Deliver mass production.
- Dor further installation or assembly of the Pump head in the entire pump unit can be quick and convenient be accomplished.
- the high-pressure seal for the piston or plunger work area is an advantage at the end facing the drive device, coaxially surrounding the piston skirt, arranged and on its outside with radial projections or one Bead surround. This improves the reliability of the piston working chamber seal elevated.
- the bead or the projections can with the other sealing body be made in one piece.
- An alternative, inexpensive version exists in using a separate O-ring for the bead.
- the pressure output of the receptacle body is preferred cylindrical sleeve realized in one side or wall of the receiving body is plugged in.
- the sleeve can have functions of holding, picking up, Adjustment and / or adjustment (by means of spring elements) of the pressure valve carry out.
- Also for a seal outside the pressure exit area can use the sleeve, especially if it is made of such an elastic Material is made that it is radially elastically expandable.
- the invention provides that the receiving body of one or more Is penetrated lines that are coupled to the suction or pressure valve and via this lead to the work area of the receiving body. It can be used to a single, compact component, namely the receiving body according to the invention, an easily and quickly mountable connection on the input side to the fluid source and on the output side, for example, using a pressure gun.
- This idea can be developed with particular advantage to the extent that that the mouths of the suction and pressure lines from or into the wall of the receiving body in a common and / or one-piece section or area of the receiving body are arranged.
- the one is preferable Area where the pressure valve is located (usually on the drive device for the end of the receiving body facing away from the plunger).
- the pump head according to the invention can be arranged with at least one suction manifold connected to the fluid source and with at least one with the pressure outlet of the pump head (from insert the connected pressure collection duct.
- the suction and pressure collection channels formed in a common distributor block and / or structurally therein are integrated 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 as well as the work area are coupled in the receiving body according to the invention.
- the cylinder valve receiving body can be an arrangement with six cylinders realize that together on the suction and pressure collection channels in one piece Distribution block are connected.
- 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 battery operating hours plus 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 stained in rotation.
- 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 closest 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 bushing 20 for the plunger work 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 is provided with a radial extension 26, in which a suction valve 27 is arranged.
- 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).
- a suction manifold 32 shown in broken lines.
- the suction line 31 opened or closed.
- Both the suction lift catcher 30 and the suction valve 27 are penetrated by an axial, central pressure line 33 which extends in the axial direction through the receiving body 8 and ends at a pressure valve ball 34 at its end facing away from the plunger 10, 11. This is pressed by a pressure valve spring 35 via a conical pressure stroke catcher 36 against metallic sealing surfaces 37 of the receiving body 8 at the outlet of the pressure line 33. Accordingly, the suction valve 27 is pressed by the suction valve spring 28 against metallic sealing surfaces 37a at the exits of the suction lines 31.
- the pressure stroke catcher 36 is guided in a stroke catcher guide sleeve 38, which also includes the pressure valve spring 35.
- 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 can be expanded radially from the inside when pressure is applied. This makes it possible to increase the pressure and thus the sealing effect of further O-sealing rings 22 a, as it were between the outer jacket of the plug-in tube 39 and the environment, in particular the inner wall of the receiving body 8
- the plug-in tube 39 in the receptacle body 8 forms the end or pressure outlet 40 of the pump head according to the invention, which opens into the pressure collection channel 41 for transmission to the high-pressure gun 3.
- the plunger 10, 11 Given suction stroke from top dead center 18 towards bottom dead center 17, can prevail in the suction line 31 or the suction manifold 32
- Low water pressure suction valve 27 from its metallic sealing surfaces 37a to solve, so that low-pressure water in the released by the working shaft 11 Workspace 9 can flow. This process occurs when bottom dead center is reached 17 ended by the work shaft 11, and the wobble shaft 12 presses with increasing rotation the working shaft 11 back towards the upper Dead center 18.
- the piston 11 moves to the right.
- the pressure in the pressure channel 41 from the other two pistons thus closes the pressure valve 34.
- the suction valve 27 lifts off the valve seat D "until it strikes the suction lift catcher 30. Water flows into the compression chamber 26 via the water pre-pressure channels 31.
- the piston moves to the left in the pressure stroke.
- the suction valve 27 is pressed against the sealing surface D and seals against the water pre-pressure channels 31.
- the pressure water is pressed through the channel 33 to the pressure valve 34 through the central bore in the suction valve 37a.
- the pressure valve 34 lifts off and the pressure water can flow into the pressure channel 41.
- the piston movement originates from the swash plate or piston engine.
- 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)
Abstract
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 (9)
- Pumpenkopf (5) für eine Kolben-, insbesondere Hochdruck-Plungerpumpe, mit einem hohlen Aufnahmekörper (8), der in seinem Inneren einen Arbeitsraum (9) aufweist, worin ein Kolben beziehungsweise Plunger (10,11) zur Ausführung abwechselnder Saug- und Druck-Hubbewegungen (16) antreibbar ist, mit einem mit einer Fluidquelle verbindbaren Saugventil (27), durch das über den Saughub Fluid in den Arbeitsraum (9) ansaugbar ist, und mit einem mit einem Druckausgang (40) verbundenen Druckventil (34), durch das über den Druckhub das angesaugte Fluid zum Druckausgang (40) drückbar ist, wobei in Richtung der Plunger-Mittelachse (X) der Plunger (10,11), das Saugventil (27) und das Druckventil (34) axial hintereinander angeordnet sind, dadurch gekennzeichnet, daß der Aufnahmekörper einstückig ausgebildet ist, und das Druck- und Saugventil (34,27) gegebenenfalls mit einer Hochdruck-Plungerabdichtung (19,21) innerhalb des oder im Aufnahmekörper (8) angeordnet, eingebaut oder eingelassen sind.
- Pumpenkopf (5) 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 (5) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Arbeitsraum (9) des Aufnahmekörpers (8) zu dem den Druck- und/oder Saugventil (34,27) abgewandten Ende mit einem oder mehreren Dichtmitteln (19,21,22) verschlossen ist.
- Pumpenkopf (5) nach Anspruch 3, dadurch gekennzeichnet. daß das Dichtmittel (19,21,22) um den Kolben beziehungsweise Plunger (10,11) herum angeordnete Vorsprünge oder wenigstens eine Wulst aufweist, die zur den Kolben oder Plunger (10,11) umgebenden Innenwandung des Aufnahmekörpers (8) vorstehen.
- Pumpenkopf (5) nach Anspruch 4, dadurch gekennzeichnet, daß die Wulst mittels eines separaten Dichtungs-, insbesondere O-Rings (22), realisiert ist.
- Pumpenkopf (5) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß am oder im Aufnahmekörper (8) wenigstens eine den Arbeitsraum (9) abschließende Hochdruckdichtung (19), eine den Aufnahmekörper (8) durchsetzende Saug- und/oder Druckleitung (31,33), ein mit dem Saugventil (27) zusammenwirkender Saughubfänger (30) und/oder ein mit dem Druckventil (34) zusammenwirkender Druckhubfänger (36) angeordnet sind.
- Pumpenkopf (5) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Aufnahmekörper (8) von einem oder mehreren Saug- und/oder Druckleitungen (31,33) durchsetzt ist, über die unter Einwirkung des Saug-beziehungsweise Druckventils (27,34) der Arbeitsraum (9) mit der Fluidquelle und dem Druckausgang (40) nebst vorgeschalteten Druckventil (34) in Verbindung setzbar ist.
- Pumpenkopf (5) nach Anspruch 7, 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, vorzugsweise in dessen das Druckventil (34) aufweisenden Endbereich, angeordnet sind.
- Anordnung für einen Pumpenkopf (5) nach Anspruch 8, mit wenigstens einem mit der Fluidquelle verbundenen Saugsammelkanal (32) und mit wenigstens einem mit dem Druckausgang (40) des Pumpenkopfes verbundenen Drucksammelkanal (41) für eine Fluidausgangsdüse insbesondere in einer Hochdruckpistole (3), dadurch gekennzeichnet, daß die Saug- und Drucksammelkanäle (32,41) in einem gemeinsamen Verteilerblock (44) ausgebildet und/oder baulich integriert sind, der mit dem gemeinsamen und/oder einstückigen Abschnitt oder Bereich des Aufnahmekörpers (8) so verbunden ist, daß die Saug- und Drucksammelkanäle (32,41) mit den Saug- beziehungsweise Druckleitungen (31,33) sowie dem Arbeitsraum (9) im Aufnahmekörper gekoppelt sind.
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 true EP0892174A2 (de) | 1999-01-20 |
EP0892174A3 EP0892174A3 (de) | 1999-05-26 |
EP0892174B1 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) |
Cited By (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 |
WO2007101599A1 (de) * | 2006-03-03 | 2007-09-13 | Alfred Kärcher Gmbh & Co. Kg | Hochdruckreinigungsgerät und verfahren zu seiner steuerung und regelung |
CN102755972A (zh) * | 2012-07-27 | 2012-10-31 | 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 |
EP2725226A1 (de) * | 2012-10-26 | 2014-04-30 | Robert Bosch Gmbh | Kolbenpumpe |
WO2013061346A3 (en) * | 2011-10-29 | 2014-05-08 | Nuove Tecnologie Applicate S.R.L. | System equipped with high-pressure and low-flow- rate pumping unit, in particular for cleaning |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6608701U (de) | 1968-09-17 | 1971-10-14 | Pumpenfabrik Urach | Kolbenpumpe. |
DE3248622A1 (de) | 1982-12-30 | 1984-07-12 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Hochdruckreinigungsgeraet |
DE3404520A1 (de) | 1984-02-09 | 1985-08-14 | Uraca Pumpenfabrik GmbH & Co KG, 7432 Bad Urach | Kolben- bzw. plungerpumpe |
DE8910468U1 (de) | 1989-09-01 | 1989-11-02 | Alfred Kaercher Gmbh & Co, 7057 Winnenden, De | |
DE3922956A1 (de) | 1989-07-12 | 1991-01-17 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgeraet |
DE4338896A1 (de) | 1993-11-15 | 1994-06-30 | Suttner Gmbh & Co Kg | Axialkolbenpumpe |
DE19604132A1 (de) | 1996-02-06 | 1997-08-07 | Hammelmann Paul Maschf | Hochdruckplungerpumpe, vorzugsweise für Arbeitsdrücke oberhalb 2.000 bar |
Family Cites Families (5)
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 |
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 |
DE19530012A1 (de) * | 1995-08-16 | 1997-02-20 | Bosch Gmbh Robert | Hydraulikgehäuseblock mit einer Kolbenpumpe |
-
1998
- 1998-07-15 EP EP19980113123 patent/EP0892174B1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6608701U (de) | 1968-09-17 | 1971-10-14 | Pumpenfabrik Urach | Kolbenpumpe. |
DE3248622A1 (de) | 1982-12-30 | 1984-07-12 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Hochdruckreinigungsgeraet |
DE3404520A1 (de) | 1984-02-09 | 1985-08-14 | Uraca Pumpenfabrik GmbH & Co KG, 7432 Bad Urach | Kolben- bzw. plungerpumpe |
DE3922956A1 (de) | 1989-07-12 | 1991-01-17 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgeraet |
DE8910468U1 (de) | 1989-09-01 | 1989-11-02 | Alfred Kaercher Gmbh & Co, 7057 Winnenden, De | |
DE4338896A1 (de) | 1993-11-15 | 1994-06-30 | Suttner Gmbh & Co Kg | Axialkolbenpumpe |
DE19604132A1 (de) | 1996-02-06 | 1997-08-07 | Hammelmann Paul Maschf | Hochdruckplungerpumpe, vorzugsweise für Arbeitsdrücke oberhalb 2.000 bar |
Cited By (7)
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 |
WO2007101599A1 (de) * | 2006-03-03 | 2007-09-13 | Alfred Kärcher Gmbh & Co. Kg | Hochdruckreinigungsgerät und verfahren zu seiner steuerung und regelung |
WO2013061346A3 (en) * | 2011-10-29 | 2014-05-08 | Nuove Tecnologie Applicate S.R.L. | System equipped with high-pressure and low-flow- rate pumping unit, in particular for cleaning |
CN102755972A (zh) * | 2012-07-27 | 2012-10-31 | 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 |
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 |
EP2725226A1 (de) * | 2012-10-26 | 2014-04-30 | Robert Bosch Gmbh | Kolbenpumpe |
CN103790819A (zh) * | 2012-10-26 | 2014-05-14 | 罗伯特·博世有限公司 | 活塞泵 |
Also Published As
Publication number | Publication date |
---|---|
EP0892174B1 (de) | 2001-10-31 |
EP0892174A3 (de) | 1999-05-26 |
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