EP0341604A2 - Robinet à piston - Google Patents

Robinet à piston Download PDF

Info

Publication number
EP0341604A2
EP0341604A2 EP89108144A EP89108144A EP0341604A2 EP 0341604 A2 EP0341604 A2 EP 0341604A2 EP 89108144 A EP89108144 A EP 89108144A EP 89108144 A EP89108144 A EP 89108144A EP 0341604 A2 EP0341604 A2 EP 0341604A2
Authority
EP
European Patent Office
Prior art keywords
circular slide
sleeve
slide valve
valve according
housing
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
EP89108144A
Other languages
German (de)
English (en)
Other versions
EP0341604A3 (en
EP0341604B1 (fr
Inventor
Jürgen Funk
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse 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 Knorr Bremse AG filed Critical Knorr Bremse AG
Priority to AT89108144T priority Critical patent/ATE82371T1/de
Publication of EP0341604A2 publication Critical patent/EP0341604A2/fr
Publication of EP0341604A3 publication Critical patent/EP0341604A3/de
Application granted granted Critical
Publication of EP0341604B1 publication Critical patent/EP0341604B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves

Definitions

  • the invention relates to a circular slide valve with a circular slide that is axially displaceably mounted in a housing and carries sealing rings, and with air guiding channels arranged in the housing and opening radially into a housing bore that receives the circular slide, wherein at least one junction can be smoothed over by a sealing ring.
  • Circular slide valves of this type are known in many designs.
  • the circular slide can have a piston surface at one or both ends, by the action of which it is displaceable; the application of the piston surface is often controlled by solenoid valves.
  • a compression spring engaging it which on the other hand is supported on a housing cover, engages.
  • a circular slide valve of the type mentioned in that the housing bore has at least in the region of one of its front ends from an opening to its end a section which is enlarged in diameter, in that section a sleeve is sealed relative to the housing is movably mounted, in which an end region of the circular slide slidably engages, that one end of the sleeve is in the region of the one junction, whereby its flow cross-section is variable in dependence on the relative position of the sleeve in the housing, and that one from the outside of the housing actuatable adjusting device is provided for adjusting the sleeve relative to the housing.
  • the further subclaims 3 to 20 show further advantageous training options according to the invention for such a circular slide valve.
  • the circular slide valve has a housing 20, into which five air guide channels 1 to 5 to be controlled in their connections and two further air guide channels 12 and 14 serving to switch the circular slide valve open.
  • a compressed air source is connected to the air duct 14, the pressure of which is monitored via a solenoid valve 21 arranged on the circular slide valve and serves to switch the circular slide valve, as explained later becomes.
  • the air duct 1 can be connected to a compressed air source
  • the air ducts 2 and 4 can lead to the pressurized spaces of a double-acting cylinder
  • the air ducts 3 and 5 can also have filtered connections to the atmosphere outside the circular slide valve.
  • other, conventional interconnections of the air duct 1 to 5 and 12 and 14 are also possible.
  • a housing bore 22 in which a circular slide 23 is guided so as to be axially displaceable.
  • the circular slide 23 carries four sealing rings 24, which radial openings 6 to 10 of the air guide channels 1 to 5 are able to grind into the housing bore 22 when the circular slide 23 is moved, so that depending on the position of the circular slide 23 in the housing 20 different connections between the air guide channels 1 to 5 result.
  • Two further sealing rings 25 arranged on the end of the circular slide 23 seal the spaces 26 and 25 adjoining the end on the round slide 23. 27 against the air duct 5 or 3.
  • the housing bore 22 is closed on both sides by housing covers 31 placed on the housing 20 with the interposition of sealing rings 30; the housing cover 31 can be held in the usual way, for example by tie rods (not shown) connecting them.
  • the right sealing ring 30 releases a flow path from the air duct 12 to the space 27 in a manner not shown.
  • the left sealing ring 30 connects the air duct 14 with an inlet 32 of the solenoid valve 21 and the outlet 33 of the solenoid valve 21 with the space 26 by means of corresponding cutouts, also not shown, and is a longitudinal bore 34 connected to the air duct 1 and eccentrically arranged in the housing 20 closed on both sides by the sealing rings 30; by changing the sealing rings 30, it can be connected in the desired manner.
  • the circular slide valve corresponds to a conventional 5/2-way valve which switches in accordance with the energized state of the solenoid valve 21. Further explanations are therefore unnecessary.
  • the circular slide valve is equipped with adjustable throttle devices for the air guide channels 3 and 5, which form the two outer guide channels 1 to 5 assigned to the grindable orifices 6 to 10.
  • the throttle device assigned to the air duct 5 has a sleeve 35 which is rotatably mounted in a left-hand end region 36 of the housing bore 22 which has a larger diameter.
  • Two sealing rings 37 embedded in the housing 20 seal the sleeve 35 against the housing 20.
  • the inner diameter of the sleeve 35 essentially corresponds to the diameter of the housing bore 22, only in its area 38 adjacent to the sealing ring 24 associated with the air duct 5 with its opening 10, it has a somewhat enlarged diameter, as shown in FIG. 1 in the upper section of the sleeve 35.
  • the sleeve 35 At its end facing the mouth 10, the sleeve 35 has a cutout which extends approximately over half its circumference, such that it has two axially staggered end faces, each lying in a radial plane, each of which extends approximately over half the circumference.
  • the sectional view of the sleeve 35 shows the axially shorter and the axially longer sleeve part above. It can be seen that the shorter sleeve part extends right up to the mouth 10, the flow cross-section of which thus does not influence, while the longer sleeve part extends axially over the entire width of the mouth 10 and can therefore cover it.
  • the sleeve 35 is provided with a base 39, which is located essentially in a recess 40 in the left housing cover 31.
  • the bottom 39 has a centering on the side facing away from the sleeve 35, an adjustment projection 41 which extends through a recess in the left housing cover 31 and has a slot 42 on its outside left end face for attaching a screwdriver, not shown, which serves as a turning tool.
  • a sealing ring 43 is arranged, which seals to the housing cover 31 and thus seals the recess 40 with respect to the opening of the housing cover 31 penetrated by the adjustment lug 41.
  • the bottom 39 is provided with an opening 44, which forms a connection from the recess 40 located between the bottom 39 and the housing cover 31 to the space 26 between the bottom 39 and the left end face of the circular slide 23, which serves as a piston surface.
  • the opening 10 of the air duct 5 in the housing bore 22 is adjustable in its flow cross-section, since depending on the rotational position of the sleeve 35, its axially shorter section can completely release the opening 10 , an axially longer section of the sleeve 35 enters the area of the mouth 10 and its flow cross-section can be reduced more or less depending on the coverage area.
  • the round slide valve is provided with a corresponding, mirror-image arranged throttle device for the mouth 8 of the air duct 3, in the bottom of the sleeve there is expediently a pressure plate 45 to support the right end of the compression spring 29.
  • a pressure plate 45 to support the right end of the compression spring 29.
  • a throttle device only on one side or to arrange one or both throttle devices in the case of different types of circular slide valves.
  • this end of the sleeve 35 can also have an end face which lies in a plane which is inclined to the radial plane.
  • the orifice 10 or 8 can be covered more or less by rotating the sleeve 35 and thus its flow cross-section can be adjusted.
  • the flow cross-section of an opening 6, 7, 8 or 9, which is not closest to the bottom 39 of the sleeve 35 but is more distant, can be made adjustable from the left sleeve 35: the sleeve is to be extended to the respective opening, whereby it in the area of the mouths covered by it are provided with openings which extend over the entire rotational range of the sleeve and thus fully open these mouths in all rotational positions of the sleeves. In the area of these openings, the inner diameter of the sleeve is to be increased in accordance with its area 38.
  • one or more of the above-mentioned openings of the sleeve cannot extend over their entire rotation range or can be designed in a wedge shape over the sleeve circumference, which results in flow cross-sections for these junctions that are dependent on the respective rotational position of the sleeve.
  • the outlets of several air ducts can thus be adjusted jointly by correspondingly rotating the sleeve.
  • the sleeve between two openings is to be sealed against the housing 20 by a sealing ring corresponding to the sealing rings 37.
  • both sleeves can independently adjust the flow cross-sections of several orifices, both sleeves can be made adjustable from one end of the circular slide valve, the radially outer sleeve only needs a sleeve-shaped adjusting ring surrounding the adjustment shoulder of the radially inner sleeve.
  • the sleeve at its open end with an end face lying in a radial plane and to arrange it axially displaceably in the housing 20. If the end positions of the circular slide 23 are not by resting its end face on the floor 39, as shown on the left in FIG. 1, but is determined in any other way, an adjustment thread can be provided between the adjustment shoulder 41 and the housing cover 31: when the adjustment shoulder is rotated, it is screwed relative to the housing cover 31, whereby the sleeve is axially displaced accordingly and with its open end more or less covers the mouth to be adjusted.
  • the sleeve 35 ' has at its end the housing cover 31' facing a radially projecting ring flange 46 which engages in an annular groove 47 'on part of its longitudinal extent surrounding the annular groove 47' of the housing 20 '.
  • annular groove 47 is on the one hand against the housing 20 'and on the other hand against the ring flange 46 supporting compression spring 48.
  • the housing cover 31' is at least one radially to the axial direction of the circular slide valve screw 49 is screwed, which with its conical end portion 50 against Force of the compression spring 48 presses against the ring flange 46.
  • the axial position of the sleeve 35 'and thus the degree of coverage of at least one junction is adjustable.
  • the embodiments described above can also be combined with one another, in particular it is possible to use the axial displacement and rotation of a sleeve in combination to adjust the flow cross-section of at least one junction. If several outlets of a sleeve are to be adjustable in their flow cross-section, it can be expedient be to design the sleeve end or the wedge-shaped recess of the sleeve such that the rotational movement of the sleeve adjusts the flow cross-section of one and the axial displacement of the sleeve adjusts the flow cross-section of the other junction; separate adjustment options for the rotational position and axial position of the sleeve can be provided, for example according to FIGS. 1 and 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sliding Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Check Valves (AREA)
  • Valve Device For Special Equipments (AREA)
  • Compressor (AREA)
  • Magnetically Actuated Valves (AREA)
EP89108144A 1988-05-09 1989-05-05 Robinet à piston Expired - Lifetime EP0341604B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89108144T ATE82371T1 (de) 1988-05-09 1989-05-05 Rundschieberventil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815855 1988-05-09
DE3815855A DE3815855C1 (fr) 1988-05-09 1988-05-09

Publications (3)

Publication Number Publication Date
EP0341604A2 true EP0341604A2 (fr) 1989-11-15
EP0341604A3 EP0341604A3 (en) 1990-10-17
EP0341604B1 EP0341604B1 (fr) 1992-11-11

Family

ID=6354015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108144A Expired - Lifetime EP0341604B1 (fr) 1988-05-09 1989-05-05 Robinet à piston

Country Status (3)

Country Link
EP (1) EP0341604B1 (fr)
AT (1) ATE82371T1 (fr)
DE (2) DE3815855C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0468606A1 (fr) * 1990-07-24 1992-01-29 MANNESMANN Aktiengesellschaft Tiroir multifonctionnel à plusieurs voies

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116705A1 (de) * 1991-05-22 1992-11-26 Knorr Bremse Ag Schieberventil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796879A (en) * 1953-08-28 1957-06-25 Gen Electric Liquid flow control apparatus
US3532122A (en) * 1968-06-13 1970-10-06 Martin G Bienzeisler Spool valve
US3701599A (en) * 1970-11-25 1972-10-31 Seco Dyn Inc Fast acting valve
DE2853506A1 (de) * 1978-12-12 1980-06-26 Rexroth Gmbh G L Hydraulisch betaetigbares wegeventil
DE3109116A1 (de) * 1981-03-11 1982-11-04 Elektro-Mechanik Gmbh, 5963 Wenden Stetigventil mit drehschieber oder laengsschieber
DE3131860C2 (de) * 1981-08-12 1987-02-05 Dr. H. Tiefenbach Gmbh & Co, 4300 Essen Hydraulikventil mit einstellbarem Durchlaßquerschnitt
DE3312123A1 (de) * 1983-04-02 1984-10-04 Schrupp GmbH, 5240 Betzdorf Proportionalventil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0468606A1 (fr) * 1990-07-24 1992-01-29 MANNESMANN Aktiengesellschaft Tiroir multifonctionnel à plusieurs voies
US5273074A (en) * 1990-07-24 1993-12-28 Mannesmann Aktiengesellschaft Gmbh Multifunction multiport slider valve

Also Published As

Publication number Publication date
ATE82371T1 (de) 1992-11-15
DE58902654D1 (de) 1992-12-17
EP0341604A3 (en) 1990-10-17
EP0341604B1 (fr) 1992-11-11
DE3815855C1 (fr) 1989-07-06

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