CN1924294A - Balancing compensation valve - Google Patents
Balancing compensation valve Download PDFInfo
- Publication number
- CN1924294A CN1924294A CN 200610127326 CN200610127326A CN1924294A CN 1924294 A CN1924294 A CN 1924294A CN 200610127326 CN200610127326 CN 200610127326 CN 200610127326 A CN200610127326 A CN 200610127326A CN 1924294 A CN1924294 A CN 1924294A
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- valve assembly
- relief valve
- reversing valve
- spool
- reversing
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Abstract
This invention relates to balance compensation valve, which comprises safety valve parts and switch valve parts, wherein, the safety valve parts have safety valve liquid-in chamber, safety valve parts liquid back chamber, safety valve part center, safety adjusting spring, safety valve socket matching with safety part chip under preset load of adjust spring; the switch parts have main valve liquid back chamber, switch valve liquid-in chamber connected and switch valve parts control chamber connected to switch valve chip.
Description
Technical field
The present invention relates to a kind of balancing compensation valve that is mainly used in the colliery with the servo-actuated of hydraulic support balancing cylinder and column oil cylinder, when lifting column, the balancing cylinder band is pressed servo-actuated, and balancing cylinder was locked when column stopped, with the stationarity that realizes that the hydraulic support attitude is adjusted, guarantee the support safe operation.
Background technology
At present, common hydraulic support, as the colliery hydraulic support, when setting prop will arrive the top, balancing cylinder promptly stopped feed flow, by the column oil cylinder rack plate is pushed up the rock stratum, fluid pressure rising in the balancing cylinder in this process, the balance safety valve is in open mode for a long time, influences its working life, and the stationarity that the hydraulic support attitude is adjusted produces harmful effect.If change automatically controlled pattern, can realize balancing cylinder servo-actuated when lifting column, the method is because the balance play of the bearing pressure of uncontrollable balancing cylinder and support is open loop control, and load is very little, the hidden danger that has the support attitude to tilt is so seldom use.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of balancing compensation valve that is connected in hydraulic support balancing cylinder and column oil cylinder is provided,, has prolonged the life-span of main valve to realize the stationarity of main valve, make the adjustment of support attitude steady, guaranteed the support safe operation.
Technical solution of the present invention: a kind of balancing compensation valve, it is characterized in that: it is made up of relief valve assembly and reversing valve assembly, and the relief valve assembly that the relief valve assembly admission chamber is wherein arranged in the relief valve assembly, is connected with the relief valve assembly admission chamber returns sap cavity, be arranged in relief valve assembly spool that relief valve assembly returns sap cavity, be installed on the relief valve assembly spool and adjust spring, adjust the relief valve assembly valve seat that cooperates with the relief valve assembly spool under the effect of spring predetermined load at relief valve assembly for its relief valve assembly that applies predetermined load; Have in the reversing valve assembly to be communicated to reversing valve assembly that main valve returns sap cavity and reversing valve assembly admission chamber respectively and to return sap cavity, return the reversing valve assembly admission chamber that sap cavity is connected, the reversing valve assembly control chamber that links to each other with the reversing valve assembly spool, be arranged in reversing valve assembly spool that reversing valve assembly returns sap cavity, be installed on the reversing valve assembly spool and adjust spring, adjust the reversing valve assembly valve seat that cooperates with the reversing valve assembly spool under the effect of spring predetermined load at reversing valve assembly for its reversing valve assembly that applies predetermined load with relief valve assembly.
Operating principle of the present invention:
The first order guarantees current pressure container operate as normal.When the fluid pressure of the pressure vessel that is connected in the reversing valve assembly control chamber reduces to being lower than predetermined value, this moment, pressure differential was lower than the predetermined load that applies on the reversal valve adjustment spring, the reversing valve assembly spool just is moved or lifts to open position from the position of the reversing valve assembly valve seat that is mated, opening the fluid that returns sap cavity from relief valve assembly returns sap cavity to reversing valve assembly and returns flowing of sap cavity fluid to main valve again, at this moment, fluid pressure in the pressure vessel that is connected in the relief valve assembly admission chamber raises, act on pressure differential on the relief valve assembly spool when adjusting the predetermined load that applies on the spring greater than relief valve assembly, the relief valve assembly spool just is moved or lifts to open position from the position that cooperates with the relief valve assembly valve seat, opens to return sap cavity from the fluid of the pressure vessel that is connected to the relief valve assembly admission chamber through relief valve assembly and flow to the reversing valve assembly admission chamber.Therefore, be connected to fluid pressure in the pressure vessel of relief valve assembly admission chamber and be lowered to relief valve assembly from predetermined value and adjust the predetermined load that spring applies, this force value should be greater than the minimum pressure value that can guarantee the pressure vessel operate as normal.
The second level is far controlled pressurize and is realized the pressure vessel operate as normal.When the fluid pressure of the pressure vessel that is connected in the reversing valve assembly control chamber is elevated to greater than predetermined value, this moment, pressure differential was adjusted the predetermined load that applies on the spring greater than reversing valve assembly, the reversing valve assembly spool just is moved or turns back to fastening position from the position of the reversing valve assembly valve seat of its cooperation, partition returns sap cavity from relief valve assembly fluid returns sap cavity to reversing valve assembly and returns flowing of sap cavity fluid to main valve again, at this moment, fluid pressure in the pressure vessel that is connected in the relief valve assembly admission chamber raises, owing to act on pressure differential on the relief valve assembly spool when adjusting the predetermined load that applies on the spring greater than relief valve assembly, the reversing valve assembly valve seat position that the relief valve assembly spool just is mated is moved or lifts to open position, flow to the reversing valve assembly admission chamber so that allow to return sap cavity through relief valve assembly from the fluid of the pressure vessel that is connected to the relief valve assembly inlet, because returning the passage that sap cavity flow to the reversing valve assembly admission chamber, relief valve assembly cut off by the reversing valve assembly spool, therefore, the fluid pressure that is connected in the relief valve assembly admission chamber pressure vessel continues pressurize.
The present invention's advantage compared with prior art is: the present invention since on main valve integrated relief valve assembly and reversing valve assembly, by control the operating pressure of current pressure container from the pressure of another pressure vessel, realize current pressure container pressure grading control, prolonged the life-span of main valve; In addition,, reduced hydraulic shock, guaranteed the main valve stable working owing to adopt the differential structure design; Flexible member adopts adjustable structure, has increased the working pressure range of this valve.The present invention has realized the band pressure servo-actuated of balancing cylinder and column oil cylinder, simultaneously at the hydraulic support holding state, has guaranteed the supporting capacity of support at holding state.The present invention can be widely used in the hydraulic machinery and the hydraulic test of similar operating mode, realizes the servo-actuated of heavy wool cylinder band pressure.
Description of drawings
Fig. 1 is a structure sectional view of the present invention.
Wherein: 1, relief valve assembly admission chamber (connecing a pressure vessel), 2, relief valve assembly is adjusted spring, 3, relief valve assembly returns sap cavity (logical reversing valve assembly admission chamber), 4, reversing valve assembly control chamber (connecing another pressure vessel), 5, reversing valve assembly is adjusted spring, 6, reversing valve assembly goes back to sap cavity (logical main valve returns sap cavity 11), 7, the right chamber of relief valve assembly spool, 8, liquid-through hole, 9, the reversing valve assembly admission chamber, 10, chamber, a reversing valve assembly spool left side, 11, main valve returns sap cavity, and 12, main valve, 13, the reversing valve assembly spool, 14, the reversing valve assembly valve seat, 15, the reversing valve assembly joint, 16, the reversing valve assembly adjustment screw, 17, the relief valve assembly joint, 18, the relief valve assembly spool, 19, the relief valve assembly valve seat, 20, the relief valve assembly adjustment screw
The specific embodiment
As shown in Figure 1, the embodiment of the invention is made up of relief valve assembly and reversing valve assembly, wherein relief valve assembly has relief valve assembly admission chamber 1, relief valve assembly is adjusted spring 2, relief valve assembly returns sap cavity 3, relief valve assembly spool 18, relief valve assembly valve seat 19, one end of relief valve assembly admission chamber 1 is connected with a pressure vessel, the relief valve assembly that the other end connects returns sap cavity 3, returning at relief valve assembly has relief valve assembly spool 18 in the sap cavity 3, relief valve assembly is adjusted spring 2 and is installed on the excircle of relief valve assembly spool 18, relief valve assembly is adjusted an end of spring 2 and the step of relief valve assembly spool 18 offsets, the other end contacts with relief valve assembly adjustment screw 20 by its spring base, distance adjustment relief valve assembly by relief valve assembly adjustment screw 20 is adjusted the size that 2 pairs of relief valve assembly spools 18 of spring apply predetermined load, relief valve assembly valve seat 19 cooperates with relief valve assembly spool 18 under the effect of relief valve assembly adjustment spring 2 predetermined loads, relief valve assembly spool 18 conical surface chamferings are greater than the chamfering of relief valve assembly core print seat 19, so that make its cylindrical and 19 contact seals of relief valve assembly valve seat.Return at relief valve assembly and to have a liquid-through hole 8 on the sap cavity, this liquid-through hole 8 is connected to reversing valve assembly admission chamber 9.
There is reversing valve assembly to return sap cavity 6, reversing valve assembly admission chamber 9, reversing valve assembly control chamber 4, reversing valve assembly adjustment spring 5 in the reversing valve assembly, reversing valve assembly returns sap cavity 6 and is communicated to main valve respectively and returns sap cavity 11 and reversing valve assembly admission chamber 9, reversing valve assembly control chamber 4 one ends are communicated with the left chamber 10 of reversing valve assembly spool 13, another pressure vessel of another termination; Reversing valve assembly spool 13 is arranged in reversing valve assembly and returns sap cavity 6, reversing valve assembly adjustment screw 16 be installed in concentric reversing valve assembly joint 15 holes of reversing valve assembly spool 13 in, reversing valve assembly is adjusted spring 5 and is installed on reversing valve assembly joint 15 holes, the one end offsets by the left side of its spring base and reversing valve assembly spool 13, the other end contacts with reversing valve assembly adjustment screw 16, by the adjustable range of reversing valve assembly adjustment screw 16 the commutation valve module is adjusted spring 5 and apply predetermined load, reversing valve assembly valve seat 14 cooperates with reversing valve assembly spool 13 under the effect of reversing valve assembly adjustment spring 5 predetermined loads.
Reversing valve assembly spool 13 conical surface chamferings are greater than the chamfering of reversing valve assembly core print seat 14, so that make its cylindrical and 14 contact seals of reversing valve assembly core print seat; Reversing valve assembly spool 13 conical surfaces have a step, and balance is returned the hydraulic coupling that makes reversing valve assembly spool 13 move or return that the next liquid of sap cavity 3 streams produces at O-ring from relief valve assembly; Reversing valve assembly spool 13 is sphere, and the spring base of adjusting spring 5 with reversing valve assembly cooperates.
The course of work of the present invention: the course of work of the present invention adopts grading control: the first order guarantees current pressure container operate as normal.When the fluid pressure of the pressure vessel that is connected in reversing valve assembly control chamber 4 reduces to being lower than predetermined value, this moment, pressure differential was lower than the predetermined load that applies on the reversal valve adjustment spring 5, reversing valve assembly spool 13 just is moved or lifts to open position from the position of the reversing valve assembly valve seat 14 that is mated, open the fluid that returns liquid-through hole 8 sap cavity 3 from relief valve assembly, return sap cavity 3 through reversing valve assembly and return flowing of sap cavity 11 to main valve again, at this moment, fluid pressure in the pressure vessel that is connected in relief valve assembly admission chamber 1 raises, owing to act on fluid pressure area on the relief valve assembly spool left part end face greater than the fluid pressure area that acts on the relief valve assembly spool right side 7, make fluid pressure load on the relief valve assembly spool left part end face greater than the fluid pressure load that acts on the relief valve assembly spool right side 7, when this pressure differential is adjusted the predetermined load that applies on the spring 2 greater than relief valve assembly, relief valve assembly spool 18 just is moved or lifts to the position that is opened from the position that cooperates with relief valve assembly valve seat 19, so that allow to return liquid-through hole 8 sap cavity 3 to reversing valve assembly admission chamber 9 through relief valve assembly, return sap cavity 6 through reversing valve assembly then and flow out from returning the sap cavity 11 of main valve 12 from the fluid of the pressure vessel that is connected to relief valve assembly admission chamber 1.Therefore, be connected to fluid pressure in the pressure vessel of relief valve assembly admission chamber 1 and be lowered to relief valve assembly from predetermined value and adjust the predetermined load that spring 2 applies, this force value should be greater than the minimum pressure value that can guarantee the pressure vessel operate as normal.
The second level is far controlled pressurize and is realized the pressure vessel operate as normal.When the fluid pressure of the pressure vessel that is connected in reversing valve assembly control chamber 4 is elevated to greater than predetermined value, this moment, pressure differential was adjusted the predetermined load that applies on the spring 5 greater than reversing valve assembly, reversing valve assembly spool 13 just is moved or turns back to fastening position from the position of the reversing valve assembly valve seat 14 of its cooperation, partition returns sap cavity 3 from relief valve assembly fluid returns sap cavity 6 to reversing valve assembly and returns flowing of sap cavity 11 to main valve again, at this moment, fluid pressure in the pressure vessel that is connected in relief valve assembly admission chamber 1 raises, owing to act on fluid pressure area on the relief valve assembly spool 18 left part end faces greater than the fluid pressure area that acts on the relief valve assembly spool right side 7, make fluid pressure load on the relief valve assembly spool left part end face greater than the fluid pressure load that acts on the relief valve assembly spool right side 7, when this pressure differential is adjusted the predetermined load that applies on the spring 5 greater than relief valve assembly, reversing valve assembly valve seat 14 positions that relief valve assembly spool 13 just is mated are moved or lift to open position, flow to reversing valve assembly admission chamber 9 from the fluid of the pressure vessel that is connected to relief valve assembly inlet 1 through the liquid-through hole 8 that relief valve assembly returns the sap cavity 3 so that allow, because relief valve assembly returns sap cavity 3 and flow to the passage of reversing valve assembly admission chamber 9 by reversing valve assembly spool 13 partitions, therefore, the fluid pressure that is connected in the pressure vessel of relief valve assembly admission chamber 1 continues pressurize.
Claims (7)
1, a kind of balancing compensation valve, it is characterized in that: it is made up of relief valve assembly and reversing valve assembly, and relief valve assembly admission chamber (1) is wherein arranged in the relief valve assembly, the relief valve assembly that is connected with relief valve assembly admission chamber (1) returns sap cavity (3), be arranged in the relief valve assembly spool (18) that relief valve assembly returns sap cavity (3), be installed in relief valve assembly spool (18) and go up the relief valve assembly adjustment spring (2) that applies predetermined load for it, adjust the relief valve assembly valve seat (19) that cooperates with relief valve assembly spool (18) under the effect of spring (2) predetermined load at relief valve assembly; Have in the reversing valve assembly and be communicated to the reversing valve assembly that main valve returns sap cavity (11) and reversing valve assembly admission chamber (9) respectively and return sap cavity (6), return the reversing valve assembly admission chamber (9) that sap cavity (3) is connected with relief valve assembly, the reversing valve assembly control chamber (4) that links to each other with reversing valve assembly spool (13) is arranged in the reversing valve assembly spool (13) that reversing valve assembly returns sap cavity (6), be installed in reversing valve assembly spool (13) and go up the reversing valve assembly adjustment spring (5) that applies predetermined load for it, adjust the reversing valve assembly valve seat (14) that cooperates with reversing valve assembly spool (13) under the effect of spring (5) predetermined load at reversing valve assembly.
2, balancing compensation valve according to claim 1, it is characterized in that: relief valve assembly adjustment screw (20) is installed in the valve opening of described relief valve assembly spool (18), it is adjusted spring (2) with relief valve assembly and contacts, and by the adjustable range of relief valve assembly adjustment screw (20) relief valve assembly is adjusted spring (2) and applies predetermined load.
3, balancing compensation valve according to claim 1, it is characterized in that: reversing valve assembly adjustment screw (16) is installed in the valve opening of described reversing valve assembly spool (13), it is adjusted spring (5) with reversing valve assembly and contacts, and by the adjustable range of reversing valve assembly adjustment screw (16) the commutation valve module is adjusted spring (5) and applies predetermined load.
4, balancing compensation valve according to claim 1 is characterized in that: in the chamfering of described relief valve assembly spool (18) conical surface chamfering greater than relief valve assembly valve seat (19).
5, balancing compensation valve according to claim 1 is characterized in that: in the chamfering of described reversing valve assembly spool (13) conical surface chamfering greater than reversing valve assembly valve seat (14).
6, balancing compensation valve according to claim 1, it is characterized in that: at described reversing valve assembly spool (13) conical surface one step is arranged, balance is returned the hydraulic coupling that makes reversing valve assembly spool (13) move or return that the next liquid of sap cavity (3) stream produces at O-ring from relief valve assembly.
7, balancing compensation valve according to claim 2 is characterized in that: described reversing valve assembly spool (13) is sphere, and the spring base of adjusting spring (5) with reversing valve assembly cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610127326 CN1924294A (en) | 2006-09-14 | 2006-09-14 | Balancing compensation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610127326 CN1924294A (en) | 2006-09-14 | 2006-09-14 | Balancing compensation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1924294A true CN1924294A (en) | 2007-03-07 |
Family
ID=37817081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610127326 Pending CN1924294A (en) | 2006-09-14 | 2006-09-14 | Balancing compensation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1924294A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948209A (en) * | 2015-06-29 | 2015-09-30 | 平顶山市申联机械制造有限公司 | Automatic pressure supplementing integral plug-in mounting hand-operated direction valve |
| CN110979608A (en) * | 2019-12-11 | 2020-04-10 | 武汉华喜特种液压设备有限公司 | Buoyancy adjusting system based on double pumps |
-
2006
- 2006-09-14 CN CN 200610127326 patent/CN1924294A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948209A (en) * | 2015-06-29 | 2015-09-30 | 平顶山市申联机械制造有限公司 | Automatic pressure supplementing integral plug-in mounting hand-operated direction valve |
| CN104948209B (en) * | 2015-06-29 | 2017-10-27 | 平顶山市申联机械制造有限公司 | A kind of integral plugged formula hand-operated direction valve of automatic compensation |
| CN110979608A (en) * | 2019-12-11 | 2020-04-10 | 武汉华喜特种液压设备有限公司 | Buoyancy adjusting system based on double pumps |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |