WO2006005302A1 - Entsperrbares rückschlagventil - Google Patents
Entsperrbares rückschlagventil Download PDFInfo
- Publication number
- WO2006005302A1 WO2006005302A1 PCT/DE2005/001169 DE2005001169W WO2006005302A1 WO 2006005302 A1 WO2006005302 A1 WO 2006005302A1 DE 2005001169 W DE2005001169 W DE 2005001169W WO 2006005302 A1 WO2006005302 A1 WO 2006005302A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- cartridge
- valve
- chamber
- return
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1826—Check valves which can be actuated by a pilot valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K17/065—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure with differential piston
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7876—With external means for opposing bias
Definitions
- the invention relates to a pilot-operated check valve according to the preamble of claim 1.
- the non-return piston serves to safeguard the more than 400 bar high working pressure of the hydraulic rams.
- the non-return piston can be hydraulically unlocked to provide communication between the working space under high working pressure, e.g. Make hydraulic ram and the return line.
- valves have to meet because of the use in underground mining on the one hand to meet very high safety requirements.
- valves are subjected to a high load when using water as hydraulic fluid because of the extremely high pressures, the very high flow rates and the high switching frequency.
- the wear-prone parts of such valves are executed in cartridge design.
- the valve housing - it is usually a valve block in which a plurality of valve holes are introduced for a plurality of valves - introduced a substantially cylindrical body as a valve cartridge, in which the valve piston are guided and the valve seats and valve chamber are formed.
- a relief valve which establishes a throttled connection between the standing under very high working pressure load chamber of the check valve and connected to the return connection chamber before the check piston lifted from its seat and a large flow area between the load chamber and the connection chamber is released.
- the relief valve it is possible, first - at least partially - reduce the pressure of the working space and the load chamber and thereby to avoid high pressure differences and flow velocities when opening the large flow cross-section.
- the relief valve is installed in the check piston, so that the discharge valve always has to be installed and removed together with the check valve, although the service life is also significantly different because of the different load.
- the check valve, the relief valve and the release piston are arranged on the axis of the valve.
- Check valve and the relief valve each have a piston which is loaded by a respective spring and rests in the manner of a check valve on a seat each, the check valve and the discharge valve are independently movable in the same direction and can be lifted from their seat. When lifted from their seats against the force of the respective spring, each of them connects the load chamber of the valve housing in which the load pressure prevailing in the load is present to a return passage of the valve housing.
- the check valve is disposed between the release piston and the relief valve.
- the Entsperrkolben is firmly connected in the Sentrum the front side on which it is acted upon by the load pressure with a Entsperrschaft.
- the Entsperrschaft extends on the valve axis, penetrates the piston of the check valve and ends with its free end face just before the discharge piston.
- the Entsperrschaft is designed so that it can slide sealingly in the bottom of the check valve. However, it has on its circumference on a projection which projects beyond the sliding in the piston head part of Entsperrschaftes. This may be, for example, a diameter step, but also a pin introduced perpendicular to its axis into the piston skirt, which projects beyond the circumference of the unlocking shaft sliding in the piston crown.
- the Entsperrschaft is dimensioned so that it first against its Piston floor or a projection attached thereto hits and lifts the piston in the further movement of its seat. This initially released only a close connection between the load chamber and the return chamber.
- the release piston is acted upon in the opening direction with the pilot pressure, preferably the working pressure of the hydraulic system and on the other side with the load pressure. His movement in the opening direction are also opposed to the springs on the described piston, which press them in the closing direction to their respective seat.
- the return channel can also be connected to the pump channel by means of a switching valve.
- the piston head of the check valve is subjected to the system pressure and lifted from its seat.
- the release piston is acted upon on its back with the system pressure and preferably relieved on the other side.
- the Entsperrkolben moves back, so that the piston of the relief valve closes pressure-dependent and by spring force and the piston of the check valve assumes its normal function of a check valve and only remains open, as long as the pressure on its underside is higher than the load pressure on the closing side.
- Check valve and relief valve are executed in Patronenbauweise, each with its own cartridge, which can be used independently of each other in the valve housing in alignment.
- the release piston is also housed in a cartridge. This may consist of one piece with the cartridge of the check valve. It is particularly advantageous that the cartridge of the relief valve, which is subject to special wear, can be replaced without also removing the cartridge of the check valve and the release piston.
- the development according to claim 2 serves the purpose of avoiding sealing problems on the relief valve and in particular relief valve piston, but nevertheless cause a safe Einschung of the load pressure.
- This embodiment is of particular importance for a cartridge-type relief valve, as the mounting of the cartridges to the load chamber allows and the valve or valve seat is unusually flowed through from the small to the large diameter side.
- the embodiment according to claim 2 therefore also has independent inventive significance.
- the embodiment according to claim 3 ensures a clear rest position of the relief piston, so that a safe closing of the valve seat is guaranteed from any operating situation out.
- the development according to claim 4 therefore has the advantage that the Entsperrkolben is easily replaceable.
- the Entsperrventil cartridge preferably formed integrally with the non-return valve cartridge, so that the pilot piston and check valve form a common component and are common interchangeable.
- the relief valve cartridge can be formed from one piece with cartridge cap and cartridge socket.
- the cartridge bushing may be formed as an independent hollow cylindrical guide body, which has an external thread and is preferably screwed into the cartridge cap.
- the advantage is that the rest spring, which pushes the release piston in its neutral position, is included in the unit.
- the known check valve allows to relieve the load chamber before the opening of the check piston largely.
- the degree of this relief is determined on the one hand by the area ratio of the hydraulically effective piston surfaces on the release piston on the one hand and on the non-return piston on the other.
- the opening behavior of the known check valve is determined by the fact that the release piston throttled only and is acted upon via a step control with the control pressure.
- valve according to the invention in another embodiment. It can thereby at slower movement of the release piston, the first Opening of the relief valve and the gradual reduction in pressure of the working pressure are made before by the Koibenterrorism the Entsperrkolbens preceding shortening of the throttle gap between Entsperrkolben and unlock cartridge amplifies the pressure build-up in the control chamber of the release piston and finally the control pressure is sufficient to lift the remindschlagkoiben from his seat.
- Figures 1 to 4 show different parts and assemblies.
- Figure 1 shows the valve in total.
- Figure 2 shows the Ventifgeophuse and the cartridges inserted therein for the Entsperrkolben (unlocking cartridge), for the check piston (non-return cartridge) and for the discharge piston (relief cartridge).
- Figure 3 shows the assembly of Entsperrkolben and non-return piston.
- FIG. 4 shows the relief valve.
- FIG. 2 To FIG. 2:
- the valve housing 1 is a Stahlbiock, in which a plurality of bores (not shown) are introduced, which serve to receive their valves and on the other hand as hydraulic channels. Sn the figures only one such valve bore with the associated hydraulic channels PST, P / R is shown.
- the valve bore 2 is inserted from one side (in the figures: the left side) with a stepped tapered diameter. In this valve bore from the open side, the valve cartridge, consisting of the unlocking cartridge 6 and the non-return cartridge 7 is inserted. These cartridges are made in the present case in one piece as a single valve cartridge.
- This valve cartridge is a hollow cylindrical body.
- the outer diameter is adapted to the diameter increments of the valve bore 2.
- the first piece with the largest diameter D1 protrudes from the valve bore and is to be touched with a wrench or other gripping tool.
- the outstanding from the valve bore end with the diameter D1 also serves as a stop.
- This is followed by a second piece with the diameter D2.
- This has an external thread, with which the valve cartridge 2 can be screwed into an internal thread in the corresponding diameter step of the valve bore.
- This control stage D3 has on its outer circumference a sealing ring 4, with which a seal of the opposite to the threaded end of the valve cartridge is effected.
- this stage has on its outer circumference an annular channel 8, which communicates with the already mentioned control channel connection PST of the valve housing 1. From the control ring channel 8, the wall of the unlocking cartridge 6 is penetrated by a control bore 9, whose function will be described later.
- the diameter stage D3 can join another stage with the smaller diameter D4 and continue to the front of the valve cartridge. In this case, the diameter jump between the steps D3 and D4 could be used to stop at a corresponding diameter jump in the valve housing 1.
- the axial determination of the unlocking cartridge 6 with non-return cartridge 7 by the diameter stage D1 / D2 on the outer face of the valve housing follows 1.
- the cartridge 6, 7 is thus by screwing the stage with the diameter D2 and by the stop set in the stage D1 / D2 in the valve body.
- the kickback stage 7 of the valve cartridge has in the area in front of its end face a further sealing ring 13 on its outer periphery. Between the sealing rings 5 and 13, this non-return cartridge 7 has a constriction on its outer circumference, which forms the annular channel 10 with the valve housing.
- This annular channel communicates with the previously described channel P / R, which is connected by means of a switching valve, not shown here either to the pump system or the return line of the longwall and serves as a discharge channel / return channel or pump channel in a manner to be described.
- the wall of the valve cartridge 7 is penetrated in the region of this annular channel 10 by a ring of radial stub lines 14, which communicate with the chamber 34 formed in the interior of the valve cartridge Fig.1).
- valve cartridge has a throttled connection bore 15 in the region of the unlocking cartridge 6, which connects the annular channel 10 with the chamber 29 (FIG. 3) formed in the interior of the unlocking cartridge.
- This chamber is completed by a constriction of the unlocking cartridge 16 with sealing ring 17.
- the front end face 31 of the valve cartridge 2 merges with a conical surface 12 into the chamber 34 formed in the interior of the valve cartridge.
- a chamber 38 is formed in the valve housing 1, the diameter of which corresponds to the smallest external diameter, here D3 of the non-return cartridge 7.
- This chamber communicates with the already mentioned connection channel A of the valve housing, which is connected to the working space of a consumer, not shown here, for. B. a hydraulic ram for supporting the roof of a Ausbauschildes is connected.
- valve housing or its bore has now following the chamber with the diameter D3 still a bore portion with the smaller diameter D4.
- a further hole 3 with a stepped diameter is introduced into the valve housing 1 in alignment with the valve axis.
- This bore serves to accommodate a further valve, said relief valve, which is shown in detail in Figure 3 and also contains a Ventiipatrone.
- This relief Ventilpairone consists of a cartridge cap 21 and a cylindrical cartridge sleeve 22 inserted therein, which screwed into the edge of the cartridge cap 21 and on the outer circumference relative to the inner periphery of the edge of the cartridge cap 21 by sealing ring 23 and against the narrowest constriction of the valve bore with the diameter D 5 is sealed by sealing ring 24.
- the end of the relief valve cartridge protrudes into the plane in which penetrate the valve bore 2 with the diameter stage D4 and the smallest stage of the Entiastungsventilbohrung 3 with the diameter D5. From this side, the relief valve cartridge forms a diameter stage whose diameter D7 is significantly narrowed compared to the previous diameter D6. The diameters D6 and D7 merge into each other in a conical surface 43.
- FIG. 3 To FIG. 3:
- the valve cartridge is - as I said - from two sections 6,7, which may also be carried out separately from each other, shown in the Embodiment, however, are designed as one piece.
- the first section is the unlock section 6.
- a chamber in which the Entsperrkolben 25 is slidably guided.
- the release chamber 25 is formed on one side of the Entsperrkolbens 26 and on the other side of the Entsperrkolbens 26, the spring chamber 29 and sealed on the outer circumference of the Entsperrkolbens 26 by sealing ring 28.
- the unlocking chamber 25 is closed to the other side by a plug 27.
- the plug 27 is screwed into an internal thread at the end of the unlocking cartridge 6 with sealing ring 30.
- the plug 27 limits the mobility of the Entsperrkolbens 26 by a stop pin on the side facing the release piston 26, the spring chamber 29 is limited by a constriction 16 of the unlocking cartridge 6 the aforementioned sealing ring on the inner circumference of the constriction. This constriction is pierced by the Entsperrkolben 26 concentrically mounted Entsperrschaft 32 and thereby limits the spring chamber 29 between the seals 17 and 28.
- the other acting on the Entsperrkolben 26 compression spring, unlocking spring 33 is supported and pressed in the idle operation, the locking piston 26 with its stopper 31 against the plug 27.
- the Entsperrkolben 26 has on its outer circumference a sealing ring 28, the Spring chamber 29 seals against the unlocking chamber 25.
- the already mentioned control bore 9 in the unlocking cartridge 6 opens on the outer circumference of the Entsperrkolbens 26 between this seal 28 and the Entsperrhunt 25. Therefore, the outer periphery of the Entsperrkolbens 26 in this area forms a decreasing with the movement of the locking piston throttle gap for slow filling of the unlocking chamber 25, when the control port PST is supplied with the control pressure.
- the spring chamber 29 is acted upon via the connecting bore 15 with the pressure which is present in the connection port P / R.
- the recoil cartridge 7 forms in its interior the connecting chamber 34 on the side facing away from the constriction 16 of the unlocking section 6 side.
- the connecting chamber 34 is acted upon via the longitudinal channel 10 to the tap holes 14 with the pressure which is present in the port P / R. This is - controlled by an unillustrated valve - alternately the pump pressure or the return pressure.
- the connecting chamber 34 is limited in the region of the front end of the check cartridge 7 by the non-return piston 35.
- This non-return piston is a truncated cone-shaped component with a circular-cylindrical rim 36 formed thereon.
- the check section 7 of the valve cartridge has - as already described - on its end face a conical surface 12, which opens into the connecting chamber 34.
- This conical surface acts as a seat together with the same shaped conical surface of the check piston 35.
- the non-return piston 35 is provided with a central bore and sealingly and slidably guided on the Entsperrschaft 32 with this bore and a sealing ring 42.
- the Entsperrschaft 32 is made in one piece with the stopper pin 31 and the Entsperrkolben 23 and slidably guided on the valve axis in the already mentioned constriction of the Entsperrsetation 6.
- the unlock shaft has a further diameter step with a diameter D7 reduced in diameter relative to the diameter D6.
- the check piston 35 limits the load chamber 38.
- the load chamber 38 is limited by the relief valve 18 to be described later.
- the load chamber 38 is constantly acted upon via the valve port A with the load pressure.
- the Entsperrschaft 32 protrudes into the load chamber 38 into a narrowed diameter stage of the valve bore.
- a guide collar 39 is attached by screwing on the end of Entsperrschaft and slidably guided in the valve bore but not sealing the valve bore.
- the guide collar 39 continues to serve as an abutment for the return spring 40, with which the non-return piston 35 in the direction of the Sit ⁇ Chemistry 12 and the stop 4 at the diameter stage D6 / D7 of Entsperrschaftes 32 is pressed.
- the guide collar 39 has a non-return piston 35 facing cylindrical skirt on which the cylindrical edge 36 of Non-return check piston is slidably guided, but not sealing and in which the already described return spring 40 is housed.
- FIG. 4 shows that in this embodiment, the valve cartridge 6, 7 with the release piston 26 mounted therein, non-return piston 35 and guide collar 39 forms a structural unit which by turning the unlocking cartridge 6 screwed out of the valve bore 2 and by inserting and screwing another Such a unit can be replaced.
- FIG. 4 shows that in this embodiment, the valve cartridge 6, 7 with the release piston 26 mounted therein, non-return piston 35 and guide collar 39 forms a structural unit which by turning the unlocking cartridge 6 screwed out of the valve bore 2 and by inserting and screwing another Such a unit can be replaced.
- FIGS. 1-3 Shown (enlarged with respect to FIGS. 1-3) is the relief valve 18 with the relief valve cartridge consisting of cartridge cap 21 and cartridge sleeve 22.
- Relief piston 19 sliding and sealingly guided by sealing ring 42.
- This relief piston 19 has a cone-shaped surface facing the conical end region and forms with this a seat pairing 43 which is closed under the load of the spring chamber 26 disposed in the compression spring 20.
- the relief piston 19 is pressed by a relief spring 20 in the seat 43.
- the spring chamber 45 is chambered by the sealing ring on the cartridge sleeve 22 on the one hand and the sealing ring 42 on the discharge piston 19.
- the relief piston 19 protrudes with its side facing away from the spring chamber side in the load chamber 38th
- the relief piston 19 has a central channel 44, which connects the spring chamber 45 with the load chamber 38.
- the relief piston 19 protrudes with a plunger 47 in the load chamber, which penetrates the diameter stage with the diameter D9 of the inner bore of the cartridge case leaving a sufficiently large gap, and cooperates upon movement of the end face of Entsperrschaftes 32, leaving a certain Totweges.
- the cartridge sleeve 22 and the cartridge cap 21 form in the assembled and screwed state in the valve bore 3, an annular return chamber 46. This is connected to the valve R and connected via this with the return pressure in the return line of the longwall.
- This return chamber 46 is connected via a throttled branch passage 48 with a discharge chamber 49, which thereby between the sealing ring 42 on the discharge piston 19 and the seat 43 on the discharge piston 19 is formed, that the conical surface of the relief piston occupies only the small inner portion of the cone skirt on the cartridge sleeve 22, on its outer portion, however, a significant gap with the cartridge sleeve
- Sealing ring 42 is larger than the hydraulic active surface on the valve pair 43.
- the load pressure which rests on both sides of the relief piston 19, therefore pushes the discharge piston against the seat 43.
- the relief spring 20 serves only the purpose that the discharge piston always a unique
- At the load channel A is a pressure of z. B. 400 bar.
- Port P / R and the control channel PST correspond to the return pressure.
- Non-return piston 35 is pressed by the force of the return spring 40 and by lying on the end face of the check piston load pressure against its seat and therefore blocks the load port A relative to the
- connection connection P / R The relief piston 19 of the relief valve is loaded on both sides with the load pressure of 400 bar. Since the hydraulic active surface on the spring side (sealing ring 42) and is greater than that of the seat side of the
- Relief piston 19 acts on him a hydraulic force and also the
- Relief spring 20 in the closing direction, so that the relief piston sealingly rests on the valve seat 43 and the load chamber is firmly closed.
- the control connection PST is depressurised or has return pressure. Likewise, in the
- the port P / R is connected via an unillustrated control valve with the
- valve housing valve block
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200511001473 DE112005001473B4 (de) | 2004-07-12 | 2005-07-01 | Entsterrbares Rückschlagventil |
GB0701478A GB2431708B (en) | 2004-07-12 | 2005-07-01 | Releasable non-return valve |
US11/622,286 US7357152B2 (en) | 2004-07-12 | 2007-01-11 | Releasable non-return valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004033778.0 | 2004-07-12 | ||
DE102004033778 | 2004-07-12 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/622,286 Continuation US7357152B2 (en) | 2004-07-12 | 2007-01-11 | Releasable non-return valve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006005302A1 true WO2006005302A1 (de) | 2006-01-19 |
Family
ID=34972889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001169 WO2006005302A1 (de) | 2004-07-12 | 2005-07-01 | Entsperrbares rückschlagventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US7357152B2 (de) |
CN (1) | CN100487291C (de) |
DE (1) | DE112005001473B4 (de) |
GB (1) | GB2431708B (de) |
PL (1) | PL206052B1 (de) |
RU (1) | RU2358175C2 (de) |
WO (1) | WO2006005302A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101956569A (zh) * | 2010-10-25 | 2011-01-26 | 江苏三恒科技集团有限公司 | 三用转接阀 |
ITPD20120396A1 (it) * | 2012-12-20 | 2014-06-21 | Dab Pumps Spa | Cartuccia per valvola di non ritorno |
CN104358902A (zh) * | 2014-10-15 | 2015-02-18 | 浙江华益机械有限公司 | 一种压力保险阀 |
DE102019208614A1 (de) * | 2019-06-13 | 2020-12-17 | Zf Friedrichshafen Ag | Druckhalteventil |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102192207A (zh) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | 一种插装式中流量硬密封单向锁 |
CN102213242B (zh) * | 2011-07-19 | 2013-12-11 | 宁波克泰液压有限公司 | 螺纹插装式电控液压锁 |
CN102734511B (zh) * | 2012-06-27 | 2014-01-08 | 中国海洋石油总公司 | 一种推芯控制阀 |
CN103671318B (zh) * | 2012-09-20 | 2015-12-16 | 山重建机有限公司 | 先导式可控流量单向阀 |
CN104074823B (zh) * | 2014-06-26 | 2016-07-06 | 无锡市威海达机械制造有限公司 | 一种限位回油单向阀 |
DE102014013495A1 (de) * | 2014-09-09 | 2016-03-10 | Hydac Technology Gmbh | Vorrichtung zur Druckentlastung an Hydraulikleitungen |
JP7320924B2 (ja) * | 2018-05-22 | 2023-08-04 | ナブテスコ株式会社 | 流体圧バルブ |
DE102022101605A1 (de) | 2022-01-24 | 2023-07-27 | Weber-Hydraulik Gmbh | Einschraubventil |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1814214A1 (de) * | 1968-12-12 | 1970-07-02 | Bosch Gmbh Robert | Federbelastetes Rueckschlagventil |
DE2544579A1 (de) * | 1975-10-04 | 1977-04-07 | Buchholz Hydraulik Helmut Buch | Sperrbremsventil |
EP0595427A1 (de) * | 1992-10-28 | 1994-05-04 | Raymond Keith Foster | Rückschlagventil-Betätigungsvorrichtung |
DE19956379A1 (de) * | 1999-11-24 | 2001-05-31 | Bosch Gmbh Robert | Vorrichtung zur Steuerung eines hydraulischen Volumenstroms eines belasteten Arbeitsmittels |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2058412B2 (de) * | 1969-08-28 | 1973-05-25 | Bosch | |
DE2211404A1 (de) * | 1972-03-09 | 1973-09-13 | Rexroth Gmbh G L | Entsperrbares rueckschlagventil |
CH543028A (de) * | 1972-11-09 | 1973-10-15 | Beringer Hydraulik Gmbh | Hydraulisches Senkbrems-Sperrventil |
US4172582A (en) * | 1977-04-21 | 1979-10-30 | Rexnord Inc. | Reverse differential holding valve |
DE2946765C2 (de) * | 1979-11-20 | 1986-04-30 | Thyssen Industrie Ag, 4300 Essen | Entsperrbares Rückschlagventil |
US4624445A (en) * | 1985-09-03 | 1986-11-25 | The Cessna Aircraft Company | Lockout valve |
JPH08114202A (ja) * | 1994-09-30 | 1996-05-07 | Samsung Heavy Ind Co Ltd | ホールディングチェックコントロールバルブ |
FR2755481B1 (fr) * | 1996-11-07 | 1998-12-24 | Lohr Ind | Dispositif de maintien en position et sous charge d'un verin hydraulique |
DE19813909B4 (de) * | 1998-03-28 | 2007-02-15 | Dbt Gmbh | Hydraulisch aufsteuerbares Rückschlagventil für die Ausbauhydraulik in Bergbau-Untertagebetrieben |
DE19856018A1 (de) * | 1998-12-04 | 2000-06-08 | Mannesmann Rexroth Ag | Entsperrbares Rückschlagventil für sehr hohe Systemdrücke |
DE29921157U1 (de) * | 1999-12-01 | 2000-02-17 | Dams Gmbh | Rückschlagventil |
-
2005
- 2005-07-01 WO PCT/DE2005/001169 patent/WO2006005302A1/de active Application Filing
- 2005-07-01 CN CNB2005800234817A patent/CN100487291C/zh not_active Expired - Fee Related
- 2005-07-01 GB GB0701478A patent/GB2431708B/en not_active Expired - Fee Related
- 2005-07-01 PL PL381579A patent/PL206052B1/pl unknown
- 2005-07-01 DE DE200511001473 patent/DE112005001473B4/de active Active
- 2005-07-01 RU RU2007105142A patent/RU2358175C2/ru not_active IP Right Cessation
-
2007
- 2007-01-11 US US11/622,286 patent/US7357152B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1814214A1 (de) * | 1968-12-12 | 1970-07-02 | Bosch Gmbh Robert | Federbelastetes Rueckschlagventil |
DE2544579A1 (de) * | 1975-10-04 | 1977-04-07 | Buchholz Hydraulik Helmut Buch | Sperrbremsventil |
EP0595427A1 (de) * | 1992-10-28 | 1994-05-04 | Raymond Keith Foster | Rückschlagventil-Betätigungsvorrichtung |
DE19956379A1 (de) * | 1999-11-24 | 2001-05-31 | Bosch Gmbh Robert | Vorrichtung zur Steuerung eines hydraulischen Volumenstroms eines belasteten Arbeitsmittels |
Cited By (5)
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CN101956569A (zh) * | 2010-10-25 | 2011-01-26 | 江苏三恒科技集团有限公司 | 三用转接阀 |
ITPD20120396A1 (it) * | 2012-12-20 | 2014-06-21 | Dab Pumps Spa | Cartuccia per valvola di non ritorno |
EP2746630A1 (de) * | 2012-12-20 | 2014-06-25 | Dab Pumps S.p.A. | Kartusche für Einwegventil |
CN104358902A (zh) * | 2014-10-15 | 2015-02-18 | 浙江华益机械有限公司 | 一种压力保险阀 |
DE102019208614A1 (de) * | 2019-06-13 | 2020-12-17 | Zf Friedrichshafen Ag | Druckhalteventil |
Also Published As
Publication number | Publication date |
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DE112005001473A5 (de) | 2007-05-24 |
DE112005001473B4 (de) | 2010-08-26 |
US7357152B2 (en) | 2008-04-15 |
GB2431708A (en) | 2007-05-02 |
RU2007105142A (ru) | 2008-08-20 |
CN1989364A (zh) | 2007-06-27 |
GB2431708B (en) | 2009-05-20 |
US20070157971A1 (en) | 2007-07-12 |
GB0701478D0 (en) | 2007-03-07 |
PL381579A1 (pl) | 2007-06-11 |
CN100487291C (zh) | 2009-05-13 |
PL206052B1 (pl) | 2010-06-30 |
RU2358175C2 (ru) | 2009-06-10 |
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