CN200978843Y - Proportional pressure and flow control valve for middle and small flow - Google Patents
Proportional pressure and flow control valve for middle and small flow Download PDFInfo
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- CN200978843Y CN200978843Y CN 200620107846 CN200620107846U CN200978843Y CN 200978843 Y CN200978843 Y CN 200978843Y CN 200620107846 CN200620107846 CN 200620107846 CN 200620107846 U CN200620107846 U CN 200620107846U CN 200978843 Y CN200978843 Y CN 200978843Y
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Abstract
The utility model relates to a proportionally controlled hydraulic element, more particularly a proportional pressure flowing controlling valve with a middle and small flowing, comprising a main valve body, a proportional pressure flowing controlling valve, a transitional plate, a pressure safe valve and a proportional flowing controlling valve element, wherein the proportional pressure flowing controlling valve is composed by an overflowing main valve and a proportional pressure pilot controlling valve, the overflowing main valve crosswise equipped on one side wall of the mail valve body, the proportional pressure pilot controlling valve is connected with the main valve body through one side the transitional plate positions on the overflowing main valve, proportional pressure flowing controlling valve element is composed by the flowing main valve and a proportional flowing electromagnet, the flowing main valve is equipped inside the main valve body, the proportional flowing electromagnet is equipped on the main valve body and is connected with the flowing main valve, and a pressure safety valve is equipped on the end position side of the proportional pressure pilot controlling valve. The utility model has the features of a flexible and convenient pressure flowing adjusting when performing and a quick response speed, which overcomes the deficits that in the prior valve, a complex structure, a big volume, difficult processing, high production cost, and a system of big flowing valve controlling a small flowing valve cause the low controlling preciseness.
Description
Technical field
The utility model relates to the proportional control hydraulic element, especially refers to a kind of ratio pressure flow control valve of middle small flow.
Background technique
Existing ratio pressure flow control valve mainly contains 03,06,10 3 kind of specification series, a kind of 03 minimum serial rated flow is 125L/min, but have a lot of hydraulic systems need be, and the flow that system needs be well below 125L/min by the ratio pressure flow control.We can copy the structure of existing valve for small flow in satisfying, and its size integral body is dwindled, but run into difficult point again like this in the processing of Pressure Control Unit overflow main valve.Shown in Figure 1, be existing Pressure Control Unit overflow main valve structural representation.It has four component: valve A 1, valve pocket member A2, spool members A3, guide sleeve member A4, valve pocket member A2, spool members A3, guide sleeve member A4 are contained in the valve A 1.They have four fitting surfaces and a sealing surface, it is the fitting surface of valve A 1 and valve pocket member A2, the fitting surface of valve pocket member A2 and spool members A3, the fitting surface of spool members A3 and guide sleeve member A4, the fitting surface of guide sleeve member A4 and valve A 1, and the sealing surface of valve pocket member A2 and spool members A3, these fitting surfaces and sealing surface difficulty of processing are very big, and size has mistake slightly, and performance just is difficult to guarantee, if size is dwindled again, difficulty of processing will be bigger.So common way is that the flow spool restriction of 03 series is reduced at present, and rated flow is reduced to 60L/min, 40L/min, or even 20L/min are with the needs of small flow hydraulic system in satisfying.Can imagine the valve of a rated flow 125L/min (maximum 160L/min) is used in the hydraulic system that minimum flow is 20L/min, be how waste and impracticable.
The model utility content
The utility model purpose is in order to overcome existing ratio pressure flow control valve overflow main valve complex structure, processing is the defective of difficulty, provide a kind of compact structure small and exquisite to society, become separate part, be simple and easy to processing, be applicable to middle small flow, easy to operate, and cost-saved, improve the ratio pressure flow control valve of small flow among hydraulic system performance a kind of.
The utility model purpose is such realization: the ratio pressure flow control valve of small flow in a kind of, comprise main valve body, proportional pressure control valve, transition plate, and it is characterized in that also having pressure relief valve and operated proportional flow control valve parts; Described proportional pressure control valve is made of overflow main valve and ratio pressure pilot-actuated valve, and the overflow main valve laterally is loaded in main valve body one side, and the ratio pressure pilot-actuated valve is connected with main valve body in overflow main valve one side by transition plate; Described operated proportional flow control valve parts are made of flow main valve and ratio flow electromagnet, and the flow main valve is loaded in the main valve body, and ratio flow electromagnet is loaded on the main valve body, and the flow main valve is connected with ratio flow electromagnet; On the ratio pressure pilot-actuated valve long through-hole is arranged, pressure relief valve is loaded on the long through-hole end sides of ratio pressure pilot-actuated valve.
Described overflow main valve is made of overflow spool, valve pocket, spring and limiting stopper, having in the side of main valve body and not bore a hole, is valve pocket in not boring a hole, and is the overflow spool on valve pocket, limiting stopper places imperforate end, making the valve pocket location, is spring between overflow spool and limiting stopper, and radial hole is arranged on valve pocket, radial hole communicates with not boring a hole, aperture is arranged on limiting stopper, intercommunicating pore is arranged on transition plate, aperture communicates with intercommunicating pore on the transition plate.
Described ratio pressure pilot-actuated valve is made of guide's valve body, conical valve base, poppet valve core, guide's spring, guide's spring seat and ratio pressure electromagnet; Guide's valve body is connected with the transition plate opposite side, long through-hole and side opening are arranged on the pilot valve body, long through-hole communicates with intercommunicating pore on the transition plate through side opening, the cone valve and the slidable guide's spring seat that are fastenedly connected are arranged in the long through-hole, between conical valve base and guide's spring seat is poppet valve core, and be pressed on guide's spring of poppet valve core, in the side of pilot valve body is the ratio pressure electromagnet, the ratio pressure electromagnet is connected with guide's spring seat the other end, through hole is arranged on the conical valve base, and through hole one end can be inserted the head of poppet valve core.
Described pressure relief valve is made of swivel nut, safety valve conical valve base, safety valve poppet valve core, safety valve spring, safety valve spring seat, adjustable lever and locking nut; Swivel nut is anchored on the long through-hole the other end, the safety valve conical valve base that is fastenedly connected is arranged in the long through-hole, the safety valve poppet valve core is arranged in the swivel nut through hole of swivel nut, the safety valve poppet valve core is connected with the safety valve conical valve base, and the safety valve poppet valve core the other end is connected with safety valve spring one end, and the safety valve spring the other end places on the safety valve spring seat, the safety valve spring seat is arranged in the long through-hole of guide's valve body, and the connection that is sealed and matched, adjustable lever one end is connected with swivel nut through hole threaded one end, and locking nut is arranged on the adjustable lever.
Flow main valve in the described operated proportional flow control valve parts is made of flow spool, flow spring, flow spring seat, slotted hole is arranged on main valve body, flow spool, flow spring are arranged in the slotted hole, flow spring seat and slotted hole one end are fastenedly connected, the slotted hole the other end has the ratio flow electromagnet that is contained on the main valve body, ratio flow electromagnet is connected with the flow main valve, and flow spring one end is on the flow spool, and the flow spring the other end is on the flow spring seat.
The utlity model has when operation pressure flow regulate flexibly, convenient, speed of response is fast, has overcome that existing valve arrangement complexity, volume are big, processing difficulties, cost of production height, large-capacity valve control small flow system cause the not high defective of control accuracy.
Description of drawings
Fig. 1 is existing Pressure Control Unit overflow main valve structural representation.
Fig. 2 is the utility model Pressure Control Unit structural representation.
Fig. 3 is the E-E sectional view of Fig. 2.
The symbol of figure and explanation thereof: the 1st, valve A, the 2nd, valve pocket member A, the 3rd, spool members A, the 4th, guide sleeve member A, the 5th, main valve body, the 51st, the pressure reduction damping, the 52nd, do not bore a hole, the 53rd, slotted hole, the 6th, transition plate, the 61st, intercommunicating pore, the 7th, proportional pressure control valve, the 71st, overflow main valve, the 711st, overflow spool, the 712nd, spring, the 713rd, valve pocket, the 714th, limiting stopper, the 715th, aperture, the 716th, radial hole, the 72nd, ratio pressure pilot-actuated valve, the 721st, ratio pressure electromagnet, the 722nd, guide's spring seat, the 723rd, guide's valve body, the 724th, guide's spring, the 725th, poppet valve core, the 726th, conical valve base, the 727th, through hole, the 73rd, long through-hole, the 8th, pressure relief valve, the 81st, safety valve conical valve base, the 82nd, safety valve poppet valve core, the 83rd, safety valve spring, the 84th, safety valve spring seat, the 85th, swivel nut, the 851st, swivel nut through hole, the 86th, locking nut, the 87th, adjustable lever, the 88th, side opening, the 9th, operated proportional flow control valve parts, the 91st, flow main valve, the 911st, flow spool, the 912nd, flow spring, the 913rd, flow spring seat, the 92nd, ratio flow electromagnet.
Embodiment
Set forth embodiment of the present utility model below in conjunction with accompanying drawing.
Shown in Figure 2, proportional pressure control valve 7 is to be made of overflow main valve 71 and ratio pressure pilot-actuated valve 72, overflow main valve 71 is in main valve body 5, main valve body 5 is connected with ratio pressure pilot-actuated valve 72 by transition plate 6, intercommunicating pore 61 is arranged on the transition plate 6, on main valve body 5, do not bore a hole 52, not boring a hole in 52 is overflow main valve 71, overflow main valve 71 is by overflow spool 711, spring 712, valve pocket 713, limiting stopper 714 constitutes, limiting stopper 714 is fastenedly connected with main valve body 5, and joins with valve pocket 713, and aperture 715 is arranged on the limiting stopper 714, be overflow spool 711 in valve pocket 713, spring 712 is between limiting stopper 714 and valve pocket 713; Radial hole 716 is arranged on valve pocket 713, and intercommunicating pore 61 communicates with aperture 715.Ratio pressure pilot-actuated valve 72 is to be made of ratio pressure electromagnet 721, guide's spring seat 722, guide's valve body 723, guide's spring 724, poppet valve core 725, conical valve base 726; Long through-hole 73 and side opening 88 are arranged on guide's valve body 723, long through-hole 73 communicates with side opening 88 1 ends, side opening 88 the other ends communicate with the intercommunicating pore 61 of transition plate 6, ratio pressure electromagnet 721 is contained on guide's valve body 723, the conical valve base 726 that is fastenedly connected is arranged in the long through-hole 73 of pilot valve body 723, poppet valve core 725, guide's spring 724, guide's spring seat 722, conical valve base 726 joins with poppet valve core 725, through hole 727 is arranged on the conical valve base 726, poppet valve core 725 1 ends are on through hole 727, guide's spring seat 722 is contained in the end of ratio pressure electromagnet 721, and guide's spring 723 is between guide's spring seat 722 and poppet valve core 725.Pressure reduction damping 51 is arranged on main valve body 5, and pressure reduction damping 51 is connected with intercommunicating pore 61 on the transition plate 6.
Pressure relief valve 8 is positioned at long through-hole 73 the other ends, pressure relief valve 8 is by safety valve conical valve base 81, safety valve poppet valve core 82, safety valve spring 83, safety valve spring seat 84, swivel nut 85, locking nut 86, adjustable lever 87 constitutes, swivel nut 85 and guide's valve body 723 are connected by screw threads for fastening, adjustable lever 87 is connected with swivel nut 85, locking nut 86 is arranged on the adjustable lever 87, safety valve conical valve base 81 is fastened in the long through-hole 73, in the swivel nut through hole 851 of swivel nut 85, safety valve spring 83 is arranged, the other end of safety valve spring 83 is safety valve poppet valve cores 82, and safety valve poppet valve core 82 can place safety valve conical valve base 81.
Shown in Figure 3, operated proportional flow control valve parts 9 are to be made of flow main valve 91, ratio flow electromagnet 92.Slotted hole 53 is arranged on main valve body 5, flow main valve 91 is arranged in the slotted hole 53, flow main valve 91 is to be made of flow spool 911, flow spring 912, flow spring seat 913, flow spring seat 913 is fastenedly connected with main valve body 5, at main valve body 5 fixedly connected ratio flow electromagnet 92 is arranged, ratio flow electromagnet 92 1 ends are connected with flow spool 911, and the other end of flow spool 911 is flow springs 912, and flow spring 912 the other ends are flow spring seats 913.
Fig. 2, shown in Figure 3, the pressure oil in main valve body 5 enter from the P mouth, flow out to P2 through P1, after flow to load B, control oily passage X → X1 → X2.
When the utility model uses, pressure oil enters into the cavity of resorption P1 of overflow spool 711 and the restriction ante-chamber P2 of flow spool 911 from the P mouth, adds electrical signal for ratio flow electromagnet 92, promotes flow spool 911 to moving down, open restriction, pressure oil enters load cavity B.Meanwhile, the pressure oil that a part enters load cavity B is by control oil channel X, enters the ante-chamber X2 of the conical valve base 726 of the epicoele X1 of overflow spool 711 and ratio pressure pilot-actuated valve 92 through pressure reduction damping 51, becomes the pressure guide and controls oil.When the induced pressure of load cavity B was lower than the setting pressure of ratio pressure pilot-actuated valve 72, poppet valve core 725 was closed not overflow, and making system pressure is load cavity B pressure; When load cavity B pressure was higher than the setting pressure of ratio pressure pilot-actuated valve 72, poppet valve core 725 was opened overflow, and making system pressure is the setting pressure of ratio pressure pilot-actuated valve 72; When system pressure was lower than the pressure of pressure relief valve 8 settings, safety valve poppet valve core 82 was closed not overflow.When system pressure was higher than the setting pressure of pressure relief valve 8, safety valve poppet valve core 82 was opened overflow, and making system pressure is pressure relief valve 8 setting pressures.When adding electrical signal for ratio flow electromagnet 91, flow spool 911 does not move, and restriction is closed, and pressure oil is pushed overflow spool 711 open and flow to oil sump tank T, system unloaded.
Claims (5)
1, a kind of ratio pressure flow control valve of middle small flow comprises main valve body (5), proportional pressure control valve (7), transition plate (6), it is characterized in that also having pressure relief valve (8) and operated proportional flow control valve parts (9); Described proportional pressure control valve (7) is made of overflow main valve (71) and ratio pressure pilot-actuated valve (72), overflow main valve (71) laterally is loaded in main valve body (5) one sides, and ratio pressure pilot-actuated valve (72) is connected with main valve body (5) in overflow main valve (71) one sides by transition plate (6); Described operated proportional flow control valve parts (9) are made of flow main valve (91) and ratio flow electromagnet (92), flow main valve (91) is loaded in the main valve body (5), ratio flow electromagnet (92) is loaded on the main valve body (5), flow main valve (91) is connected with ratio flow electromagnet (92), long through-hole (73) is arranged on the ratio pressure pilot-actuated valve (72), and pressure relief valve (8) is loaded on long through-hole (73) end sides of ratio pressure pilot-actuated valve (72).
2, the ratio pressure flow control valve of a kind of middle small flow according to claim 1, it is characterized in that described overflow main valve (71) is by overflow spool (711), valve pocket (713), spring (712) and limiting stopper (714) constitute, side at main valve body (5) has do not bore a hole (52), not boring a hole in (52) is valve pocket (713), on valve pocket (713) overflow spool (711), limiting stopper (714) places the end of do not bore a hole (52), make valve pocket (713) location, be spring (712) between overflow spool (711) and limiting stopper (714), radial hole (716) is arranged on valve pocket (713), radial hole (716) communicates with do not bore a hole (52), and aperture (715) is arranged on limiting stopper (714); Intercommunicating pore (61) is arranged on transition plate (6), and aperture (715) communicates with intercommunicating pore (61) on the transition plate (6).
3, the ratio pressure flow control valve of a kind of middle small flow according to claim 1 is characterized in that described ratio pressure pilot-actuated valve (72) is made of guide's valve body (723), conical valve base (726), poppet valve core (725), guide's spring (724), guide's spring seat (722) and ratio pressure electromagnet (721); Guide's valve body (723) is connected with transition plate (6) opposite side, long through-hole (73) and side opening (88) are arranged on pilot valve body (723), long through-hole (73) communicates with intercommunicating pore (61) on the transition plate (6) through side opening (88), the conical valve base (726) and the slidable guide's spring seat (722) that are fastenedly connected are arranged in the long through-hole (73), between conical valve base (726) and guide's spring seat (722), be poppet valve core (725), and be pressed on guide's spring (724) of poppet valve core (725), in the side of pilot valve body (723) is ratio pressure electromagnet (721), ratio pressure electromagnet (721) is connected with guide's spring seat (722) the other end, through hole (727) is arranged, the head that through hole (727) one ends can be inserted poppet valve core (725) on the conical valve base (726).
4, the ratio pressure flow control valve of a kind of middle small flow according to claim 1 is characterized in that described pressure relief valve (8) is made of swivel nut (85), safety valve conical valve base (81), safety valve poppet valve core (82), safety valve spring (83), safety valve spring seat (84), adjustable lever (87) and locking nut (86); Swivel nut (85) is anchored on long through-hole (73) the other end, the safety valve conical valve base (81) that is fastenedly connected is arranged in the long through-hole (73), safety valve poppet valve core (82) is arranged in the swivel nut through hole (851) of swivel nut (85), safety valve poppet valve core (82) is connected with safety valve conical valve base (81), safety valve poppet valve core (82) the other end is connected with safety valve spring (83) one ends, safety valve spring (83) the other end places on the safety valve spring seat (84), safety valve spring seat (84) is arranged in the long through-hole (73) of guide's valve body (723) of ratio pressure pilot-actuated valve (72), and connection is sealed and matched, adjustable lever (87) one ends are connected with swivel nut through hole (851) threaded one end, and locking nut (86) is arranged on the adjustable lever (87).
5, the ratio pressure flow control valve of a kind of middle small flow according to claim 1, it is characterized in that flow main valve (91) in the described operated proportional flow control valve parts (9) is by flow spool (911), flow spring (912), flow spring seat (913) constitutes, slotted hole (53) is arranged on main valve body (5), flow spool (911) is arranged in the slotted hole (53), flow spring (912), flow spring seat (913) is fastenedly connected with slotted hole (53) one ends, slotted hole (53) the other end has the ratio flow electromagnet (92) that is contained on the main valve body (5), ratio flow electromagnet (92) is connected with flow main valve (91), flow spring (912) one ends are on flow spool (911), and flow spring (912) the other end is on flow spring seat (913).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107846 CN200978843Y (en) | 2006-09-20 | 2006-09-20 | Proportional pressure and flow control valve for middle and small flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107846 CN200978843Y (en) | 2006-09-20 | 2006-09-20 | Proportional pressure and flow control valve for middle and small flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978843Y true CN200978843Y (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620107846 Expired - Fee Related CN200978843Y (en) | 2006-09-20 | 2006-09-20 | Proportional pressure and flow control valve for middle and small flow |
Country Status (1)
| Country | Link |
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| CN (1) | CN200978843Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032226A (en) * | 2010-12-29 | 2011-04-27 | 大连华锐股份有限公司 | Adjustable superposition type outlet pressure compensator |
| CN102313044A (en) * | 2010-07-02 | 2012-01-11 | 上海立新液压有限公司 | Hydraulic control flow valve |
| CN101861472B (en) * | 2008-03-14 | 2013-03-13 | 腓特烈斯港齿轮工厂股份公司 | Hydraulic control arrangement for controlling a variable fluid volume flow |
| CN103047426A (en) * | 2013-01-11 | 2013-04-17 | 浙江大学台州研究院 | Pneumatic proportional pressure valve |
| CN103453188A (en) * | 2013-09-12 | 2013-12-18 | 无锡海德曼医疗设备有限公司 | Water pressure switch |
| CN110477999A (en) * | 2019-08-29 | 2019-11-22 | 湖南瀚德微创医疗科技有限公司 | A kind of surgical clamp exporting constant clamping force |
-
2006
- 2006-09-20 CN CN 200620107846 patent/CN200978843Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861472B (en) * | 2008-03-14 | 2013-03-13 | 腓特烈斯港齿轮工厂股份公司 | Hydraulic control arrangement for controlling a variable fluid volume flow |
| CN102313044A (en) * | 2010-07-02 | 2012-01-11 | 上海立新液压有限公司 | Hydraulic control flow valve |
| CN102032226A (en) * | 2010-12-29 | 2011-04-27 | 大连华锐股份有限公司 | Adjustable superposition type outlet pressure compensator |
| CN102032226B (en) * | 2010-12-29 | 2013-01-23 | 大连华锐重工集团股份有限公司 | Adjustable superposition type outlet pressure compensator |
| CN103047426A (en) * | 2013-01-11 | 2013-04-17 | 浙江大学台州研究院 | Pneumatic proportional pressure valve |
| CN103453188A (en) * | 2013-09-12 | 2013-12-18 | 无锡海德曼医疗设备有限公司 | Water pressure switch |
| CN103453188B (en) * | 2013-09-12 | 2015-07-29 | 无锡海德曼医疗设备有限公司 | Hydraulic pressure switch |
| CN110477999A (en) * | 2019-08-29 | 2019-11-22 | 湖南瀚德微创医疗科技有限公司 | A kind of surgical clamp exporting constant clamping force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20140920 |
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| EXPY | Termination of patent right or utility model |