WO1997030304A1 - Cartouche de valve - Google Patents

Cartouche de valve Download PDF

Info

Publication number
WO1997030304A1
WO1997030304A1 PCT/EP1997/000401 EP9700401W WO9730304A1 WO 1997030304 A1 WO1997030304 A1 WO 1997030304A1 EP 9700401 W EP9700401 W EP 9700401W WO 9730304 A1 WO9730304 A1 WO 9730304A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
connection
pump
switching
consumer
Prior art date
Application number
PCT/EP1997/000401
Other languages
German (de)
English (en)
Inventor
Alfred Kostorz
Original Assignee
Mannesmann Rexroth Ag
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 Mannesmann Rexroth Ag filed Critical Mannesmann Rexroth Ag
Publication of WO1997030304A1 publication Critical patent/WO1997030304A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • F04B49/035—Bypassing
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing

Definitions

  • the invention relates to a valve cartridge with a housing part.
  • the valve cartridge has at least one pump connection, a tank connection and a consumer connection, as well as a pressure limiting valve and a switching valve in one structural unit, the two valves being connected in parallel to one another between the pump and tank connections.
  • the relevant components are known in the prior art as self-contained individual components with which hydraulic circuits can be realized, which serve, for example, as pump protection and for relieving starting of a hydraulic pump or for lowering the pressure on a hydraulic consumer.
  • the object of the invention is to create a valve cartridge with which hydraulic circuits can be implemented, which can be produced cost-effectively and require only a small installation space.
  • a corresponding object is achieved by a valve cartridge with the features of claim 1.
  • valve cartridge With the valve cartridge according to the invention, the hydraulic circuits mentioned can be implemented in the smallest possible installation space and the valve cartridge can be easily replaced as a structural unit in the event of a possible damage, without a hydraulic actuating device possibly connected to the respective consumer connection being subject to longer downtimes experiences.
  • a check valve is arranged inside the housing part, which, facing the consumer connection, blocks the fluid backflow from the consumer connection in the direction of the pump connection in order to relieve the pump connection.
  • the switching valve is a 2/2-way valve which can be brought into its opening position which establishes the fluid-carrying connection between the pump and the tank connection by means of an actuating magnet.
  • the actuating or switching magnets in question can be controlled electrically and the actuating rod of the actuating magnet, which can be moved and moved longitudinally, interacts with the respective valve member of a switching valve, for example in the form of a 2/2-way valve. Since the actuating magnet mentioned is also available in a compact design, it can be flanged to the valve cartridge and together with it form a sales and actuation unit. Further advantageous feature configurations are the subject of the subclaims.
  • valve cartridge according to the invention is explained in more detail below with reference to the drawing.
  • FIG. 1 shows a longitudinal section through a first embodiment of the
  • FIG. 2 shows a longitudinal section through a modified embodiment of the valve cartridge according to FIG. 1, insofar as these changes are concerned;
  • the valve cartridge shown in FIG. 1 has a housing part 10 which is provided with a pump connection P, a tank connection T and a consumer connection A.
  • the housing part 10 tapers step-wise in cross-section towards the consumer connection A, an external thread 12 being arranged in the middle step region, with which the valve cartridge or the like can be fixed into a fixed part of a hydraulic actuation device. can be screwed in.
  • the pump connection P and the tank connection T are arranged essentially transversely and the consumer connection A is arranged parallel to the longitudinal axis 14 of the valve cartridge.
  • Inside the housing part 10 there is a check valve 16 at the end facing the consumer connection A and a switching valve 18 in the form of a 2/2-way valve at the other end of the valve cartridge.
  • a pressure relief valve 20 is added to the housing part 1 0. All of the connections and valves mentioned are accommodated in the one-piece housing part 1 0 and therefore form the valve cartridge as a unit according to its basic function.
  • the housing part 10 can also be of interrupted multi-part construction in the longitudinal direction of the valve cartridge; however, preferably consists of a self-contained housing unit.
  • the valves mentioned are arranged one behind the other in a central central bore 22 of the housing part 10, which will be discussed in more detail below.
  • the switching valve 1 8 in the form of the 2/2-way valve can be brought into its opening position which establishes the fluid-carrying connection between pumps P and tank connection T by means of an actuating magnet 24.
  • actuating magnet 24 mentioned which is known in the prior art, because of the simpler representation, as viewed in the direction of view of FIG.
  • a valve guide member 36 of the switching valve 1 8 is screwed into the central bore 20 and in partial face-to-face contact with the magnetic tube 28.
  • the switching member 38 of the switching valve 18 is guided in the valve guide member 36 in a longitudinally displaceable manner, which is spring-loaded via the compression spring 40 in the direction of its closed position blocking the pumps P- from the tank connection T, as shown in FIG Fig. 1.
  • a pressure compensation channel 42 which is provided at its end facing the switching rod 26 with cross bores opening into the central bore 22.
  • the compression spring 40 engages with one free end on the end face of the fixed valve guide member 36 and with its other end on a widening 44 which is fixedly connected to the switching element 38.
  • the switching element 38 On its side facing the consumer connection A, the switching element 38 has a closed outer groove on the outer circumference, which favors the flow of current, which in its position shown in FIG. 1 opens into continuous transverse bores 48 of the valve guide element 36.
  • the opposite end of the switching element 38 is in direct contact with the free end of the switching rod 26 of the actuating magnet 24, via which the switching element 38 can be actuated.
  • valve tappet 50 of the pressure limiting valve 20 is in turn guided longitudinally directly in the central bore 22, the closing head 52 of the valve tappet 50 being spherical at least at its end remote from the consumer connection A and cooperating with a contact plate 54 which acts on the Place of the system with the closing head 52 has a conically tapering centering surface, so that when the valve plunger 50 is actuated, it can be moved back centered into its closed position shown in FIG.
  • the free end face of the contact plate 54 cooperates with a compression spring 56, which is supported with its one free end on the contact plate 54 and with its other end on a front recess 58 at the end of the screw-in part facing the consumer connection A. 30, which for this purpose engages with a stepped extension 60 in the central bore 22 of the housing part 10.
  • This peg-like extension 60 has a central channel 62, which constantly de Establishes connection between the switching element 38 of the switching valve 1 8 and the tank connection T.
  • the screw-in position of the screw-in part 30 can be changed, an adjusted closing force value of the pressure spring 56 being able to be maintained via the lock nut 32, which permanently fixes the screw-in part 30 in its position in the housing part 10.
  • the valve tappet 50 of the pressure-limiting valve 20 is held in the direction of its closed position, which separates the pumps P- from the tank connection T and is shown in FIG.
  • the pressure of the tank connection T which usually corresponds to the ambient pressure
  • the pump pressure P on the opposite side acts on a taper 64 of the valve tappet 50 via the pump connection P.
  • the closing head 52 and a guide end piece 66 of the valve tappet 50 which is flush with the consumer connection A adjacent in the tapered central bore 22 of the housing part 10.
  • the closing ball 68 of the check valve 16 is received by a closing part 70, which holds the closing ball 68 spring-loaded in its closed position shown in FIG. 1, the compression spring 72 provided for this purpose being supported with one free end on the closing part 70 and with the other End on an end plate 74 which is provided with the longitudinal bores 76 forming the consumer connection A.
  • the closing ball 68 together with the closing part 70 in the illustration according to FIG. 1 releases the fluid-carrying path between the pump connection P and the consumer connection A.
  • a fluid-blocking closure 78 is inserted into the central bore 22 of the housing part 10 and into the A fluid-conducting connection in the form of the central channel 62 can have an orifice 80 inserted between the pressure-limiting valve 20 and the switching valve 18 as an additional option.
  • the check valve 1 6 also interrupts the fluid-carrying connection between the pump connection P and a connecting line 82 leading to the switching valve 18.
  • This connecting line 82 which runs slightly obliquely in the housing part 10, opens with its one free end into the valve chamber 84 of the Check valves 16 and with their other free end in a fluid space 86 which is delimited on the outer circumferential side by the housing part 10 and on the inner circumferential side by the peg-like extension 60 and in turn on the end side by the housing part 10 and the screw-in part 30.
  • longitudinal bores 88 are arranged in the screw-in part 30, which end at one end in the fluid chamber 86 and at the other end into the transverse bores 48 of the valve guide member 36.
  • the check valve 1 6 opens and establishes a fluid-carrying connection to the consumer connection A.
  • the pressure prevailing in the pump connection P is both at the switching valve! 1 8 as well as on the pressure relief valve 20. If the closing pressure at the pressure limiting valve 20, which can be set via the compression spring 22, is exceeded by the pressure present in the pump connection P, the pressure limiting valve 20 serving as protection opens and the fluid quantity is conveyed in the direction of the tank connection T and then to the tank T.
  • This fluid-carrying connection is also established when, after actuation of the actuating magnet 24, the switching valve 18 assumes its fluid-continuous opening position, the switching rod 26 displacing the switching element 38 from its closed position shown in FIG. 1 to the right in the direction of view of FIG and thereby releases the fluid-carrying connection between the pump connection P, the connecting line 82, the fluid space 86, the longitudinal and transverse bores 88 and 48 to the central channel 62 and the subsequent central bore 22 and the tank connection T.
  • the hydraulic pump 90 With the hydraulic circuit realized by the valve cartridge, the hydraulic pump 90 is secured and the pressure present at a hydraulic consumer which is connected to the consumer connection A can be reduced accordingly.
  • the check valve 16 is, as shown in FIG. 3, hydraulically connected between the connections of the switching valve 18 and the pressure limiting valve 20 on the pump side.
  • FIG. 2 shows only the front part of the modified valve cartridge facing the consumer connection A. Seen in the direction of FIG. 2, those valve components would then follow on the left side of the figure, as are shown in FIG. 1.
  • the modified embodiment is therefore only described in the following insofar as it differs substantially from the previous embodiment.
  • the main difference is a change in the arrangement of the check valve 1 6, which is now as shown in Figure 2 is held in the closed valve position 84 via the compression spring 72 in a closed position such that there is a permanent fluid-conducting connection from the pump connection P to the connecting line 82 in both directions.
  • the corresponding change in which the check valve 16 is arranged facing the consumer connection A in the fluid direction behind the branch with the switching valve 18, is also reflected in the corresponding hydraulic circuit according to FIG. 4, whereby again the dash-dotted framed hydraulic components are realized in a structural unit in the valve cartridge according to FIG.
  • the relevant circuit function also serves to protect the pump and to relieve the start of the hydraulic pump 90. If an aperture 80 is provided in the hydraulic circuits according to FIGS.
  • the pump connection P and the tank connection T can be divided into a plurality of transverse branches 94 via longitudinal grooves 92 arranged on the outer circumference of the housing part 10.
  • the check valve 16, which represents an additional safeguard, can also be completely dispensed with in the valve cartridges shown, the respective connecting line 82 then having to be permanently connected to the pump connection P.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Check Valves (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Cartouche de valve comprenant une enveloppe (10) et au moins une prise de raccordement à une pompe (P), une prise de raccordement à un réservoir (T) et une prise de raccordement à un appareil utilisateur (A), ainsi qu'une valve de limitation de pression (20) et une valve de commande (18) incorporées dans un même ensemble, les deux valves (18, 20) étant montées en parallèle l'une par rapport à l'autre, entre la prise de raccordement à la pompe (P) et la prise de raccordement au réservoir (T). Grâce à la cartouche de valve selon l'invention, il est possible de réaliser dans un espace minimum, des circuits hydrauliques pour la protection des pompes hydrauliques et/ou pour le démarrage équilibré d'une pompe hydraulique, ainsi que pour la réduction de pression sur un consommateur hydraulique. En cas d'endommagement, la cartouche de valve peut être rapidement remplacée par une neuve, évitant ainsi des périodes d'arrêt prolongées côté consommateur.
PCT/EP1997/000401 1996-02-15 1997-01-30 Cartouche de valve WO1997030304A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19605557A DE19605557A1 (de) 1996-02-15 1996-02-15 Ventilpatrone
DE19605557.1 1996-02-15

Publications (1)

Publication Number Publication Date
WO1997030304A1 true WO1997030304A1 (fr) 1997-08-21

Family

ID=7785453

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/000401 WO1997030304A1 (fr) 1996-02-15 1997-01-30 Cartouche de valve

Country Status (2)

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DE (1) DE19605557A1 (fr)
WO (1) WO1997030304A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110107731A (zh) * 2019-05-23 2019-08-09 江苏威博液压股份有限公司 一种多功能的可调节启闭特性的螺纹插装阀

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106892A1 (de) * 2001-02-16 2002-09-05 Mannesmann Rexroth Ag Vorgesteuertes 2/2-Wege-Sitzventil
ITRE20020002A1 (it) * 2002-01-11 2003-07-11 Bucher Hydraulics S P A Gruppo valvolare complesso per circuiti idraulici, in particolare perl'unita' di potenza
DE102008053998A1 (de) * 2008-10-30 2010-05-06 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kompressor zur Drucklufterzeugung für ein Kraftfahrzeug
DE102017208644B4 (de) * 2017-05-22 2019-01-03 Aft Automotive Gmbh Ventilanordnung sowie Fluidtankanordnung
CN109114060B (zh) * 2018-09-27 2020-03-31 乐清市同丰大鲵驯养繁殖有限公司 一种阀
CN115405710B (zh) * 2022-09-01 2023-06-09 唐山传奇科技有限公司 自闭式高速泄压阀

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303877A1 (de) * 1983-02-05 1984-08-16 Jörn 4320 Hattingen Dams Einzelstempelventil
DE3722344A1 (de) * 1987-07-07 1989-01-19 Rausch & Pausch Mehrwegemagnetventil
EP0330430A2 (fr) * 1988-02-24 1989-08-30 Diesel Equipment Limited Soupape hydraulique à pression élevée pour contrôler l'écoulement du fluide
WO1992014085A1 (fr) * 1991-02-06 1992-08-20 Weber Guenter Soupape a cartouche
DE4211551A1 (de) * 1992-04-06 1993-10-07 Rexroth Mannesmann Gmbh Verstellpumpe mit einem Druckbegrenzungs- und einem Druckzuschaltventil
US5467797A (en) * 1994-12-23 1995-11-21 General Motors Corporation Two-position three-way solenoid valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943317A1 (de) * 1979-10-26 1981-05-14 Erwin Hengstler Hydraulik GmbH, 7613 Hausach 3-wege-stromregelventil
DD242027A1 (de) * 1985-10-31 1987-01-14 Polygraph Leipzig Zusatzeinrichtung zur druckumstellung
DE4123036C2 (de) * 1991-07-12 1994-08-11 Daimler Benz Ag Schieberventil
DE9302339U1 (de) * 1993-02-18 1993-05-27 Maschinenfabrik Jörn Dams GmbH, 4320 Hattingen Ventilpatrone

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303877A1 (de) * 1983-02-05 1984-08-16 Jörn 4320 Hattingen Dams Einzelstempelventil
DE3722344A1 (de) * 1987-07-07 1989-01-19 Rausch & Pausch Mehrwegemagnetventil
EP0330430A2 (fr) * 1988-02-24 1989-08-30 Diesel Equipment Limited Soupape hydraulique à pression élevée pour contrôler l'écoulement du fluide
WO1992014085A1 (fr) * 1991-02-06 1992-08-20 Weber Guenter Soupape a cartouche
DE4211551A1 (de) * 1992-04-06 1993-10-07 Rexroth Mannesmann Gmbh Verstellpumpe mit einem Druckbegrenzungs- und einem Druckzuschaltventil
US5467797A (en) * 1994-12-23 1995-11-21 General Motors Corporation Two-position three-way solenoid valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110107731A (zh) * 2019-05-23 2019-08-09 江苏威博液压股份有限公司 一种多功能的可调节启闭特性的螺纹插装阀
CN110107731B (zh) * 2019-05-23 2021-09-07 江苏威博液压股份有限公司 一种多功能的可调节启闭特性的螺纹插装阀

Also Published As

Publication number Publication date
DE19605557A1 (de) 1997-08-21

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