CN102705289B - Energy recovery balance valve - Google Patents

Energy recovery balance valve Download PDF

Info

Publication number
CN102705289B
CN102705289B CN201210206398.5A CN201210206398A CN102705289B CN 102705289 B CN102705289 B CN 102705289B CN 201210206398 A CN201210206398 A CN 201210206398A CN 102705289 B CN102705289 B CN 102705289B
Authority
CN
China
Prior art keywords
oilhole
oil
valve
control
pressure
Prior art date
Application number
CN201210206398.5A
Other languages
Chinese (zh)
Other versions
CN102705289A (en
Inventor
唐香平
Original Assignee
唐香平
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 唐香平 filed Critical 唐香平
Priority to CN201210206398.5A priority Critical patent/CN102705289B/en
Publication of CN102705289A publication Critical patent/CN102705289A/en
Application granted granted Critical
Publication of CN102705289B publication Critical patent/CN102705289B/en

Links

Abstract

The invention discloses an energy recovery balance valve, which comprises a compensation valve core, a balance spring, a valve core, a control spring 1, a control piston and a throttle. The control spring 1, the valve core, the control piston and the throttle are arranged in a hydraulic control throttle valve cavity; the hydraulic control throttle valve cavity is divided into a pressure oil cavity, an oil return cavity, an oil discharge cavity 1, an oil discharge cavity 2 and a control oil cavity by the control spring 1, the valve core, the control piston and the throttle; the compensation valve core and the balance spring are arranged in a three-way pressure compensation valve cavity; and the three-way pressure compensation valve cavity is provided with an oil inlet hole, a recovery oil hole, a working oil hole and a control oil hole. According to the invention, the load is stably descended, and the pressure oil converted by the loaded mechanical energy is recovered by the recovery oil hole, so that the energy recovery function is realized and the flow characteristics are adjustable.

Description

A kind of energy reclaims equilibrium valve
Technical field
The present invention relates to hydraulic control valve, specifically with the energy that load balance in hydraulic system and energy reclaim, reclaim equilibrium valve.
Background technique
In various machinery of modern times, hydraulic system is widely used.And how energy-conservation in hydraulic system be main research direction always.In hydraulic system, in the process of load decline and braking, be, by equilibrium valve throttling, the mechanical energy of load is all converted into interior can work done realization the steady decline of load and brake, this part energy is actual have been wasted.Cause harmful side effects such as heating of hydraulic system simultaneously, increased the burden of radiation system.
Equilibrium valve throttling technology only concentrates on additional energy required while reducing equilibrium valve unlatching now, and the potential energy of load and kinetic energy still can slattern.As the green equilibrium valve of BOSCH-REXROTH, by reducing equilibrium valve cracking pressure, realize energy-conservation object exactly.
Summary of the invention
The technical problem solving: the present invention is directed to the deficiencies in the prior art, provide a kind of and can realize load steadily decline and braking, the energy that energy when load can be declined again reclaims simultaneously reclaims equilibrium valve.
Technological scheme: a kind of energy reclaims equilibrium valve, described energy reclaims equilibrium valve and comprises compensating spool, balance spring, spool, control spring one, control piston, flow controller.Control spring one, spool, control piston, flow controller are arranged in hydraulic-control throttling valve pocket.Control spring one, spool, control piston, flow controller are divided into hydraulic-control throttling valve pocket pressure oil cavity, oil back chamber, draining chamber one, draining chamber two, control oil pocket.Control oil pocket and be connected with control port by flow controller, pressure oil cavity is connected with pressure hydraulic fluid port, and draining chamber one, draining chamber two are connected with drain tap.Compensating spool, balance spring is arranged in three-way pressure compensating valve chamber.Three-way pressure compensating valve chamber has oil inlet hole, recovery oilhole, work oilhole, controls oilhole.Oil inlet hole is connected with oil back chamber, and oil inlet hole is also connected with draining chamber one by throttle orifice two, controls oilhole and is connected with pressure chamber by throttle orifice one, reclaims oilhole and is connected with recovery hydraulic fluid port, and work oilhole is connected with actuator port.After always first opening recovery oilhole during compensating spool action, open work oilhole, otherwise close recovery oilhole after first closing work oilhole.The pressure of oil inlet hole and the spring force of balance spring make to reclaim oilhole and work oilhole trend is opened, and the pressure of controlling oilhole makes to reclaim oilhole and closes with work oilhole trend.
Described energy reclaims equilibrium valve and also comprises safety overflow valve, overload relief valve.Safety overflow valve is arranged on from controlling oil pocket to drain tap, and installation direction overflows to drain tap for controlling the hydraulic oil of oil pocket.Overload relief valve is arranged on from pressure oil cavity to controlling oil pocket, and the hydraulic oil that installation direction is pressure oil cavity overflows to control oil pocket.
Described energy reclaims equilibrium valve and also comprises adjusting screw rod one.Balance spring is arranged between compensating spool and adjusting screw rod one.
Described energy reclaims equilibrium valve and also comprises guide's spool, control spring two, adjusting screw rod two, and has cancelled adjusting screw rod one.Guide's spool, control spring two, adjusting screw rod two are arranged in guide's valve pocket successively.Guide's valve pocket has controls oilhole two, draining hole and work oilhole two.Controlling oilhole two is connected with the pressure chamber of hydraulic-control throttling valve.Draining hole is connected with drain tap.Guide's spool is processed with the conical surface, and place, draining hole is processed with cutting edge, and the cutting edge at the conical surface of guide's spool and place, guide's valve pocket draining hole can form inclusion seal.The control oilhole of three-way pressure compensating valve is no longer connected with the pressure chamber of hydraulic-control throttling valve by throttle orifice one, but connects with the work oilhole two-phase of compensation pilot valve, is connected by throttle orifice three with oil inlet hole simultaneously.The spring force of balance spring makes to reclaim oilhole and work oilhole trend is closed.
Described energy reclaims equilibrium valve and also comprises one-way valve.One-way valve is arranged between described the work oilhole of three-way pressure compensating valve and the pressure oil cavity of hydraulic-control throttling valve, and its installation direction is that working medium can flow to from the work oilhole of three-way pressure compensating valve the pressure oil cavity of hydraulic-control throttling valve.
Remarkable result of the present invention: realizing on the steady basis declining of load, realized load energy simultaneously and reclaimed function, and traffic characteristic is adjustable.
Accompanying drawing explanation
Fig. 1 is embodiment 1 cross-sectional schematic.
Fig. 2 is embodiment 1 three-way pressure compensating valve chamber cross-sectional schematic.
Fig. 3 is embodiment 1 hydraulic-control throttling valve pocket.
Fig. 4 is embodiment 2 cross-sectional schematic.
Fig. 5 is embodiment 3 cross-sectional schematic.
Fig. 6 is embodiment 4 compensation guide valve pocket cross-sectional schematic.
Fig. 7 is guide's spool front elevational schematic of embodiment 4.
Fig. 8 is embodiment 4 compensating spool cross-sectional schematic.
Fig. 9 is embodiment 4 cross-sectional schematic.
Figure 10 is embodiment 5 cross-sectional schematic.
Number in the figure representative: compensating spool 1, balance spring 2, adjusting screw rod 1, one-way valve 5, spool 6, control spring 1, safety overflow valve 8, control piston 9, overload relief valve 10, adjusting screw rod 2 11, control spring 2 12, guide's spool 13, actuator port A1, reclaim hydraulic fluid port P1, pressure hydraulic fluid port A2, drain tap T, control port P2, throttle orifice one S1, flow controller S2, throttle orifice two S3, throttle orifice Three S's 4, control oilhole D, work oilhole A, reclaim oilhole B, oil inlet hole C, oil back chamber E, pressure oil cavity F, control oil pocket G, draining chamber one T1, draining chamber two T2, control oilhole two H, draining hole J, work oilhole two K, conical surface R2, cutting edge R1, three-way pressure compensating valve chamber Q1, hydraulic-control throttling valve pocket Q2, guide's valve pocket Q3.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1.
See Fig. 1,2,3.This embodiment comprises compensating spool 1, balance spring 2, and spool 6, control spring 1, control piston 9, shown in flow controller S2(Fig. 1).Control spring 1, spool 6, control piston 9, flow controller S2(are by shown in Fig. 1) be arranged on (shown in Fig. 1, Fig. 3) in hydraulic-control throttling valve pocket Q2.Control spring 1, spool 6, control piston 9, flow controller S2 are divided into hydraulic-control throttling valve pocket Q2 pressure oil cavity F, oil back chamber E, draining chamber one T1, draining chamber two T2, control shown in oil pocket G(Fig. 1).Control oil pocket G and be connected with control port P2 by flow controller S2, pressure oil cavity F is connected with pressure hydraulic fluid port A2, draining chamber one T1, draining chamber two T2 be connected with drain tap T (shown in Fig. 1).Compensating spool 1, balance spring 2(is by shown in Fig. 1) be arranged on (shown in Fig. 1, Fig. 2) in the Q1 of three-way pressure compensating valve chamber.Three-way pressure compensating valve chamber Q1 has oil inlet hole C, recovery oilhole B, work oilhole A, controls shown in oilhole D(Fig. 2).Oil inlet hole C is connected with oil back chamber F, oil inlet hole C is also connected with draining chamber one T1 by throttle orifice two S3, control oilhole D and be connected with pressure oil cavity F by throttle orifice one S1, reclaim oilhole B and reclaim hydraulic fluid port P1 and be connected, the oilhole A that works be connected with actuator port A1 (shown in Fig. 1).After always first opening recovery oilhole B during compensating spool 1 action, open work oilhole A, otherwise close shown in recovery oilhole B(Fig. 1 after first closing work oilhole A).The spring force of the pressure of oil inlet hole C and balance spring 2 makes to reclaim oilhole B and work oilhole A trend is opened, and the pressure of controlling oilhole D makes to reclaim oilhole B and closes (shown in Fig. 1) with work oilhole A trend.
Control port P2 connects pilot pressure oil, and pressure hydraulic fluid port A2 is connected with load, and actuator port A1 is connected with selector valve, during selector valve meta, and actuator port A1 oil sump tank.Drain tap T is with no pressure direct-connected with fuel tank, reclaiming the external one-way valve of hydraulic fluid port P1 is connected with recovery oil sources, preventing that pressure oil in recovering device from blowing back into reclaims hydraulic fluid port P1, and the installation direction of one-way valve is that working medium can flow to recovering device (as accumulator etc.) from reclaiming hydraulic fluid port P1.
Working principle is as follows.
Load keeps: pilot pressure oil is without pressure, and spool 6 is isolated pressure oil cavity F and oil back chamber E under the effect of control spring 1; Oil inlet hole C is by throttle orifice two S3 releases; Pressure oil in pressure oil cavity F by throttle orifice one S1 ramp metering oilhole D, acts on compensating spool 1 right-hand member, and the spring force that overcomes balance spring 2 pushes compensating spool 1 to left end, closes and reclaims oilhole B and work oilhole A.
Load declines: pilot pressure oil pressure rises, and the active force that overcomes control spring 1 promotes spool 6 left, and pressure oil cavity F and oil back chamber E connect, and the controlled pressure oil pressure of openings of sizes between pressure oil cavity F and oil back chamber E is controlled.After flowing into oil back chamber E, the opening of hydraulic oil in pressure oil cavity F by between pressure oil cavity F and oil back chamber E flow into again oil inlet hole C, at oil inlet hole C build-up pressure and act on the left end of compensating spool 1.When the spring force that adds balance spring 2 when the pressure of oil inlet hole C is greater than the pressure of controlling oilhole D, compensating spool 1 moves right, and opens and reclaims oilhole B.If the pressure that the pressure of oil inlet hole C is greater than recovering device hydraulic oil through reclaiming oilhole B, reclaim hydraulic fluid port P1 and external one-way valve flows into recovering device, realized energy recovery function.Along with reclaiming the opening of oilhole B, strengthen, the pressure of oil inlet hole C starts to decline, until the spring force that the pressure of oil inlet hole C adds balance spring 2 is when controlling the pressure balance of oilhole D, compensating spool 1 is parked in an equilibrium position.If the oil pressure in recovering device is greater than the pressure of oil inlet hole C, the hydraulic oil of oil inlet hole C can not flow into recovering device.At this moment spool 1 is opened work oilhole A by continuing to move right, and hydraulic oil flows back to fuel tank through work oilhole A, actuator port A1 and selector valve.Along with reclaiming the opening of oilhole A, strengthen, the pressure of oil inlet hole C starts to decline, until the spring force that the pressure of oil inlet hole C adds balance spring 2 is when controlling the pressure balance of oilhole D, compensating spool 1 is parked in an equilibrium position.From Fig. 1 and above analysis, the pressure reduction geometric ratio between pressure oil cavity F and oil back chamber E is in the spring force of balance spring 2; The spring force of balance spring 2 only fluctuate in very among a small circle at one (wave range determined by the rigidity of balance spring 2, the less wave range of rigidity is less); Therefore can think that flow is determined by the openings of sizes between pressure oil cavity F and oil back chamber E, flow is determined by the pressure of pilot pressure oil and the spring force of balance spring 2, realized the load function that steadily declines.The vibration that flow controller S2 may exist while providing a damping to be used for suppressing spool 6 action; The vibration that throttle orifice two S3 may exist while providing a damping to be used for suppressing compensating spool 1 action.
Embodiment 2.
See Fig. 2, Fig. 3, Fig. 4.The present embodiment is on embodiment 1 basis, to have increased safety overflow valve 8, overload relief valve 10.Safety overflow valve 8 is arranged on from controlling oil pocket G to drain tap T, and the hydraulic oil that installation direction is control oil pocket G overflows to drain tap T(and sees Fig. 4).Overload relief valve 10 is arranged on from pressure oil cavity F to controlling oil pocket G, installation direction be the hydraulic oil of pressure oil cavity F overflow to control oil pocket G(and see Fig. 4).Other is identical with embodiment 1.
Working principle: load keeps: with embodiment 1.Load declines: with embodiment 1.
Load overload and braking: when the pressure in pressure oil cavity F is greater than the setting pressure of overload relief valve, overload relief valve 10 is opened, the hydraulic oil ramp metering oil pocket G in pressure oil cavity F is also through flow controller S2 ramp metering hydraulic fluid port P2.Along with the pressure rise in oil pocket G is controlled in the increase of flow, the active force that overcomes control spring 1 promotes spool 6 left.Working procedure when working procedure thereafter declines with embodiment's 1 load.
Pressure rise in controlling oil pocket G is when surpassing the setting pressure of safety overflow valve 8, and safety overflow valve 8 is opened, and unnecessary hydraulic oil flow into drain tap T from control oil pocket G.
Embodiment 3.
See Fig. 2, Fig. 3, Fig. 5.The present embodiment is on embodiment 2 basis, to have increased adjusting screw rod 1, and balance spring 2 is arranged between compensating spool 1 and adjusting screw rod 1.
Working principle: load keeps: with embodiment 1.Load declines: with embodiment 1.Load overload and braking: with embodiment 2.
The present embodiment can, by regulating adjusting screw rod 1 to change the spring force of balance spring 2, come adjusting energy to reclaim the traffic characteristic of equilibrium valve.
Embodiment 4.
See Fig. 2,3,6,7,8,9.The present embodiment is on embodiment 2 basis, to have increased shown in adjusting screw rod 2 11, control spring 2 12, guide's spool 13(Fig. 9).Control spring 1, spool 6, control piston 9, flow controller S2(are by shown in Fig. 9) be arranged on (shown in Fig. 9, Fig. 3) in hydraulic-control throttling valve pocket Q2.Control spring 1, spool 6, control piston 9, flow controller S2 are divided into hydraulic-control throttling valve pocket Q2 pressure oil cavity F, oil back chamber E, draining chamber one T1, draining chamber two T2, control shown in oil pocket G(Fig. 9).Control oil pocket G and be connected with control port P2 by flow controller S2, pressure oil cavity F is connected with pressure hydraulic fluid port A2, draining chamber one T1, draining chamber two T2 be connected with drain tap T (shown in Fig. 9).Compensating spool 1, balance spring 2(is by shown in Fig. 9) be arranged on (shown in Fig. 9, Fig. 2) in the Q1 of three-way pressure compensating valve chamber.Three-way pressure compensating valve chamber Q1 has oil inlet hole C, recovery oilhole B, work oilhole A, controls shown in oilhole D(Fig. 2).Oil inlet hole C is connected with oil back chamber F, oil inlet hole C is also connected with draining chamber one T1 by throttle orifice two S3, control oilhole D by shown in throttle orifice Three S's 4(Fig. 8) be connected with oil inlet hole C, reclaim oilhole B and reclaim hydraulic fluid port P1 and be connected, the oilhole A that works be connected with actuator port A1 (shown in Fig. 9).After always first opening recovery oilhole B during compensating spool 1 action, open work oilhole A, otherwise close shown in recovery oilhole B(Fig. 9 after first closing work oilhole A).The spring force of balance spring 2 makes to reclaim oilhole B and work oilhole A trend is closed (shown in Fig. 9).Guide's spool 13, control spring 2 12, adjusting screw rod 2 11 are arranged in guide's valve pocket Q3 (shown in Fig. 9) successively.Guide's valve pocket Q3 has and controls shown in oilhole two H, draining hole J and work oilhole two K(Fig. 6).Control oilhole two H and be connected with pressure chamber F, draining hole J is connected with drain tap T, oilhole two K that work be connected with control oilhole D (shown in Fig. 9).Guide's spool 13 is processed with shown in conical surface R2(Fig. 7).J place, draining hole is processed with shown in cutting edge R1(Fig. 6).Conical surface R2 and cutting edge R1 can form inclusion seal (shown in Fig. 9).The spring force of balance spring 2 makes to reclaim oilhole B and work oilhole A trend is closed (shown in Fig. 9).
Control port P2 connects pilot pressure oil, and pressure hydraulic fluid port A2 is connected with load, and actuator port A1 is connected with selector valve, during selector valve meta, and actuator port A1 oil sump tank.Drain tap T is with no pressure direct-connected with fuel tank, reclaiming the external one-way valve of hydraulic fluid port P1 is connected with recovery oil sources, preventing that pressure oil in recovering device from blowing back into reclaims hydraulic fluid port P1, and the installation direction of one-way valve is that working medium can flow to recovering device (as accumulator etc.) from reclaiming hydraulic fluid port P1.
Working principle is as follows.
Load keeps: pilot pressure oil is without pressure, and spool 6 is isolated pressure oil cavity F and oil back chamber E under the effect of control spring 1; Oil inlet hole C is by throttle orifice two S3 releases; Pressure oil in pressure oil cavity F enters controls oilhole two H, and the spring force that overcomes control spring 2 12 is pushed guide's spool 13 to right side, closes draining hole J, and conical surface R2 is pressed on cutting edge R1 above simultaneously, controls oilhole two H without leaking sealing; The spring force of balance spring 2 is pushed compensating spool 1 to left end, closes and reclaims oilhole B and work oilhole A.
Load declines: pilot pressure oil pressure rises, and the active force that overcomes control spring 1 promotes spool 6 left, and pressure oil cavity F and oil back chamber E connect, and the controlled pressure oil pressure of openings of sizes between pressure oil cavity F and oil back chamber E is controlled.After flowing into oil back chamber E, the opening of hydraulic oil in pressure oil cavity F by between pressure oil cavity F and oil back chamber E flow into again oil inlet hole C, at oil inlet hole C build-up pressure and act on the left end of compensating spool 1.The pressure oil of oil inlet hole C is through throttle orifice Three S's 4 ramp metering oilhole D, flow into again work oilhole two K, the pressure of oilhole two K of working as shown in Figure 9 equals to control the pressure of oilhole D, and oil inlet hole C and the pressure reduction (pressure of oil inlet hole C deducts the pressure of controlling oilhole D) of controlling oily D equal the pressure drop at throttle orifice Three S's 4 places; Pressure oil in pressure oil cavity F enters controls oilhole two H, and the pressure of controlling as shown in Figure 9 oilhole two H equals the pressure in pressure oil cavity F.The spring force that adds control spring 2 12 when the pressure of work oilhole two K is greater than the pressure of controlling oilhole two H, when controlling the pressure of oilhole D and add the spring force of control spring 2 12 and be greater than the pressure in pressure oil cavity F, guide's spool 13 moves to the left, and draining hole J opens.The pressure oil of controlling in oilhole D flows into drain tap T through draining hole J.Along with the increase of flow, in the pressure drop at throttle orifice Three S's 4 places, increase, oil inlet hole C increases with the pressure reduction of controlling oily D, and when oil inlet hole C and the pressure reduction of controlling oily D are greater than the spring force of balance spring 2, compensating spool 1 moves right, and opens and reclaims oilhole B.If the pressure that the pressure of oil inlet hole C is greater than recovering device hydraulic oil through reclaiming oilhole B, reclaim hydraulic fluid port P1 and external one-way valve flows into recovering device, realized energy recovery function.Along with reclaiming the opening of oilhole B, strengthen, the pressure of oil inlet hole C starts to decline, and the flow of the throttle orifice Three S's 4 of flowing through declines, until oil inlet hole C is when controlling the pressure reduction of oily D and the spring force balance of balance spring 2, compensating spool 1 is parked in an equilibrium position.If the oil pressure in recovering device is greater than the pressure of oil inlet hole C, the hydraulic oil of oil inlet hole C can not flow into recovering device.At this moment spool 1 is opened work oilhole A by continuing to move right, and hydraulic oil flows back to fuel tank through work oilhole A, actuator port A1 and selector valve.Along with the opening of work oilhole A strengthens, the pressure of oil inlet hole C starts to decline, and the flow of the throttle orifice Three S's 4 of flowing through declines, until oil inlet hole C is when controlling the pressure reduction of oily D and the spring force balance of balance spring 2, compensating spool 1 is parked in an equilibrium position.From Fig. 9 and above analysis, the pressure reduction geometric ratio between pressure oil cavity F and oil back chamber E is in the spring force of control spring 2 12; The spring force substantially constant of control spring 2 12; Therefore can think that flow is determined by the openings of sizes between pressure oil cavity F and oil back chamber E, flow is determined by the pressure of pilot pressure oil and the spring force of control spring 2 12, realized the load function that steadily declines.The vibration that flow controller S2 may exist while providing a damping to be used for suppressing spool 6 action; The vibration that throttle orifice Three S's 4 may exist while providing a damping to be used for suppressing compensating spool 1 action.Regulate adjusting screw rod 2 11 for changing the spring force of control spring 2 12, come adjusting energy to reclaim the traffic characteristic of equilibrium valve.Compare embodiment 2 and embodiment 3, the pressure reduction in the present embodiment between pressure oil cavity F and oil back chamber E is more stable.
Load overload and braking: in reference implementation example 2, load overload and braking and the load of this embodiment decline.
Embodiment 5.
See Fig. 2,3,6,7,8,10.The present embodiment is to have increased shown in one-way valve 5(Figure 10 on the basis of enforcement 4).One-way valve 5 is arranged between pressure oil cavity F and work oilhole A, and installation direction is that hydraulic oil can flow to shown in pressure oil cavity F(Figure 10 from work oilhole A).
Load keeps: identical with embodiment 4.
Load declines: identical with embodiment 4.
Load overload and braking: identical with embodiment 4.
Load is risen: selector valve commutation, actuator port A1 welding system pressure oil.System pressure oil arrives work oilhole A through actuator port A1 mouth, then through one-way valve 5 feed pressure oil pocket F, promotes load rise through pressure hydraulic fluid port A2.

Claims (5)

1. energy reclaims an equilibrium valve, comprises compensating spool (1), balance spring (2), and spool (6), control spring one (7), control piston (9), flow controller (S2), is characterized in that:
Control spring one (7), spool (6), control piston (9), flow controller (S2) are arranged in hydraulic-control throttling valve pocket (Q2);
Control spring one (7), spool (6), control piston (9), flow controller (S2) are divided into hydraulic-control throttling valve pocket (Q2) pressure oil cavity (F), oil back chamber (E), draining chamber one (T1), draining chamber two (T2), control oil pocket (G);
Controlling oil pocket (G) is connected with control port (P2) by flow controller (S2), pressure oil cavity (F) is connected with pressure hydraulic fluid port (A2), and draining chamber one (T1), draining chamber two (T2) are connected with drain tap (T);
Compensating spool (1), balance spring (2) is arranged in three-way pressure compensating valve chamber (Q1); Three-way pressure compensating valve chamber (Q1) has oil inlet hole (C), recovery oilhole (B), work oilhole (A), controls oilhole (D);
Oil inlet hole (C) is connected with oil back chamber (E), oil inlet hole (C) is also connected with drain tap (T) by throttle orifice two (S3), controlling oilhole (D) is connected with pressure oil cavity (F) by throttle orifice one (S1), reclaim oilhole (B) and be connected with recovery hydraulic fluid port (P1), work oilhole (A) is connected with actuator port (A1);
Compensating spool (1) is opened while reclaiming oilhole (B), after first opening recovery oilhole (B), just open work oilhole (A), while closing work oilhole (A), first close after work oilhole (A) and just close and reclaim oilhole (B);
The spring force of the pressure of oil inlet hole (C) and balance spring (2) makes to reclaim oilhole (B) and work oilhole (A) trend is opened, and the pressure of control oilhole (D) makes to reclaim oilhole (B) and work oilhole (A) trend is closed.
2. according to right, want askenergy described in 1 reclaims equilibrium valve, it is characterized in that: described a kind of energy reclaims equilibrium valve and also comprises safety overflow valve (8), overload relief valve (10); Safety overflow valve (8) is arranged on from controlling oil pocket (G) to drain tap (T), and installation direction overflows to drain tap (T) for controlling the hydraulic oil of oil pocket (G); Overload relief valve (10) is arranged on from pressure oil cavity (F) to controlling oil pocket (G), and installation direction is that the hydraulic oil of pressure oil cavity (F) overflows to control oil pocket (G).
3. according to right, want askenergy described in 1 or 2 reclaims equilibrium valve, it is characterized in that: described a kind of energy reclaims equilibrium valve and also comprises adjusting screw rod one (3); Balance spring (2) is arranged between compensating spool (1) and adjusting screw rod one (3).
4. according to right, want askenergy described in 1 or 2 reclaims equilibrium valve, it is characterized in that: described a kind of energy reclaims equilibrium valve and also comprises guide's spool (13), control spring two (12), adjusting screw rod two (11); Guide's spool (13), control spring two (12), adjusting screw rod two (11) are arranged in guide's valve pocket (Q3) successively; Guide's valve pocket (Q3) has controls oilhole two (H), draining hole (J) and work oilhole two (K); Controlling oilhole two (H) is connected with the pressure oil cavity (F) of hydraulic-control throttling valve pocket (Q2); Draining hole (J) is connected with drain tap (T); Guide's spool (13) is processed with the conical surface (R2), cutting edge (R1) is located to be processed with in draining hole (J), and the conical surface (R2) of guide's spool (13) forms inclusion seal with the cutting edge (R1) that guide's valve pocket (Q3) draining hole (J) is located; The control oilhole (D) in three-way pressure compensating valve chamber (Q1) is no longer connected with the pressure oil cavity (F) of hydraulic-control throttling valve pocket (Q2) by throttle orifice one (S1), but be connected with the work oilhole two (K) of guide's valve pocket (Q3), by throttle orifice three (S4), be connected with oil inlet hole (C) simultaneously; The spring force of balance spring (2) makes to reclaim oilhole (B) and work oilhole (A) trend is closed.
5. according to right, want askenergy described in 1 or 2 reclaims equilibrium valve, it is characterized in that: described a kind of energy reclaims equilibrium valve and also comprises one-way valve (5); One-way valve (5) is arranged between described the work oilhole (A) in three-way pressure compensating valve chamber (Q1) and the pressure oil cavity (F) of hydraulic-control throttling valve pocket (Q2), and its installation direction is that working medium flows to the pressure oil cavity (F) of hydraulic-control throttling valve pocket (Q2) from the work oilhole (A) of three-way pressure compensating valve chamber (Q1).
CN201210206398.5A 2012-06-21 2012-06-21 Energy recovery balance valve CN102705289B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210206398.5A CN102705289B (en) 2012-06-21 2012-06-21 Energy recovery balance valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210206398.5A CN102705289B (en) 2012-06-21 2012-06-21 Energy recovery balance valve

Publications (2)

Publication Number Publication Date
CN102705289A CN102705289A (en) 2012-10-03
CN102705289B true CN102705289B (en) 2014-09-17

Family

ID=46898281

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210206398.5A CN102705289B (en) 2012-06-21 2012-06-21 Energy recovery balance valve

Country Status (1)

Country Link
CN (1) CN102705289B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105673888B (en) * 2016-04-06 2017-11-28 浙江大学 Rotation oil distributing valve for novel combined digital servo actuator
CN106050784B (en) * 2016-08-14 2017-10-03 宁波市博尔法液压有限公司 A kind of balanced valve
CN111577691A (en) * 2020-04-20 2020-08-25 同济大学 Low-pulsation flow control valve based on post-valve energy storage compensation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557294A (en) * 1983-03-10 1985-12-10 Die Heilmeier & Weinlein Fabrik fur Oel-Hydraulik GmbH & Co. KG Control valve with piston compensated by discharge pressure
CN87212235U (en) * 1987-08-26 1988-09-14 合肥液压件厂 Load feedback one-way stable shunt valve
CN1350125A (en) * 2001-12-07 2002-05-22 卢永松 Hydraulic balancing valve
CN101629587A (en) * 2009-08-06 2010-01-20 宁波汉商液压有限公司 Hydraulic balance valve
CN101929481A (en) * 2010-04-30 2010-12-29 北京联合大学 Three-way pressure compensating valve for hydraulic energy-saving system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0784882B2 (en) * 1991-02-15 1995-09-13 油谷重工株式会社 Variable playback circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557294A (en) * 1983-03-10 1985-12-10 Die Heilmeier & Weinlein Fabrik fur Oel-Hydraulik GmbH & Co. KG Control valve with piston compensated by discharge pressure
CN87212235U (en) * 1987-08-26 1988-09-14 合肥液压件厂 Load feedback one-way stable shunt valve
CN1350125A (en) * 2001-12-07 2002-05-22 卢永松 Hydraulic balancing valve
CN101629587A (en) * 2009-08-06 2010-01-20 宁波汉商液压有限公司 Hydraulic balance valve
CN101929481A (en) * 2010-04-30 2010-12-29 北京联合大学 Three-way pressure compensating valve for hydraulic energy-saving system

Also Published As

Publication number Publication date
CN102705289A (en) 2012-10-03

Similar Documents

Publication Publication Date Title
CN103047208B (en) Load-sensitive electro-hydraulic proportional multi-way valve
EP3216633A1 (en) Suspension device
WO2011040808A3 (en) Adjustable shock absorber
CN101749447B (en) Flow control valve
CN102425576B (en) Motor system having passive cable laying function
WO2003074877A1 (en) System for controlling a hydraulic force pump
KR20060079222A (en) Proportional pressure control valve
KR101878581B1 (en) Cylinder device
JP4885223B2 (en) Control device and control method for piston / cylinder mechanism
CN104633233B (en) A kind of overflow valve using magnetorheological pilot valve
EP1820996A3 (en) Damping force control valve and shock absorber using the same
JP5948260B2 (en) Fluid pressure control device
EP2037048A2 (en) Flow control apparatus for heavy construction equipment
CN103090070B (en) Piloted reducer
CN203384151U (en) Manual and self-inspection hydraulic proportional valve
US9016054B2 (en) Device for compensating for hydraulic effective pressures
DE112006002306T5 (en) Metering valve with integral limit and refill function
CN106195370B (en) Cartridge balanced valve
CN204226320U (en) Equilibrium valve and truck crane
MXPA02006828A (en) Vehicle suspension control system.
CN104196803B (en) A kind of multi-functional screw-in cartridge valve for heavy tractor electricity liquid lifter
CN102251996A (en) Engineering mechanical load sensing hydraulic system
CN104047931B (en) Three-way pressure compensating device assembly
CN104032791A (en) Quantitative and variable hydraulic system of loading machine
US20170009866A1 (en) Transmission Device with a Hydraulic System

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140917

Termination date: 20200621