CN103075380B - Proportional pressure-reducing valve - Google Patents
Proportional pressure-reducing valve Download PDFInfo
- Publication number
- CN103075380B CN103075380B CN201310007518.3A CN201310007518A CN103075380B CN 103075380 B CN103075380 B CN 103075380B CN 201310007518 A CN201310007518 A CN 201310007518A CN 103075380 B CN103075380 B CN 103075380B
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- China
- Prior art keywords
- valve
- pressure
- reducing valve
- valve pocket
- electromagnetic coil
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- 239000000945 filler Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 101150034459 Parpbp gene Proteins 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Abstract
The invention relates to a proportional pressure-reducing valve, comprising a valve bush (1), a pressure-reducing valve core (2), an oil outlet (7), an oil inlet (3), an oil return port (21) and an armature assembly (11), wherein the valve bush (1) is internally provided with the pressure-reducing valve core (2), the side wall of the valve bush (1) is provided with the oil inlet (3) and the oil return port (21), a magnetic electrode (4) which is subjected to integral molding with the pressure-reducing valve core (2) is located at one side of the pressure-reducing valve core (2), a radial throttling hole (8) is formed in the middle of the pressure-reducing valve core (2) and is communicated with the oil outlet (7), a diversion trench (9) is formed in the middle of the pressure-reducing valve core (2), and a push rod (18) is in contact with the pressure-reducing valve core (2). The proportional pressure-reducing valve disclosed by the invention has the advantages that a complex process based on welding is omitted by integrally machining a magnetic tube which is made from a composite material, meanwhile, the magnetic electrode and the valve bush are integrated, so that the concentricity of the magnetic electrode and the valve bush is improved, and the proportional pressure-reducing valve is simple to assemble, low in fault rate, favorable in proportional performance and simple to operate.
Description
Technical field
The present invention relates to one serially, pari passu convection cell carry out pressure controlled hydraulic element, particularly a kind of proportional pressure-reducing valve.
Background technique
Proportional pressure-reducing valve is a kind of control valve utilizing curent change to be reduced continuously, pari passu by the pressure of liquid, and proportional pressure-reducing valve is generally used to the control valve spool driving engineering machinery.In hydraulic transmission and control, the pilot stage of electro-hydraulic proportional flow valve and proportional direction valve, mostly is some electro-hydraulic proportional reducing valves.
Chinese patent 96211363.8 discloses a kind of differential pressure feedback cone valve electrohydraulic proportional pressure reducing vavle, the end of pilot valve is provided with the cone with regulating valve seat diameter compatible, and be provided with adjustment threaded body in one end of regulating valve seat, the cone angle preferred values of cone 15 ~ 40 °, and cylinder aperture is 1 ~ 6mm, needs are reduction valve in parallel in the side of guide valve blocks, although this valve is ripe technically, but because the head cone of pilot valve and adjustable seating are often opened, make pressure oil leakage rate large, cause larger energy loss, and when producing, assembling is complicated, cost of production is high, be only suitable for comparatively large discharge, pilot control can not be used for.
Chinese patent 01126636.X discloses pressure difference feedback type precontrolled slide valve, it comprises guide valve blocks, sliding spool and proportion electro-magnet, left channel is provided with at the left side place of pilot valve, pilot valve body is also provided with the vertical passage that lower end communicates with the epicoele of main valve, damp channel is provided with between left channel and vertical passage, damping hole is provided with in damp channel, the upper end of vertical passage communicates with the right-hand member passage of pilot valve body, the right lower side of pilot valve body is provided with one end and communicates with the draining chamber of main valve, the right lower side passage that the other end communicates with crosspassage.The valve of this structure solves the large technical problem of energy loss, but the two ends area equation of sliding spool, be subject to the restriction of the power that electromagnet produces, after producing pressure reduction, its output flow is subject to certain restrictions, and flow is relatively little, and therefore the working pressure of reduction valve is also smaller, in use easily break down, and mechanism is not compact.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of and assemble proportional pressure-reducing valve simple, that failure rate is low, ratio are functional and simple to operate.
Object of the present invention is achieved through the following technical solutions: a kind of proportional pressure-reducing valve, it comprises valve pocket, relief pressure valve cartridge, magnetic pole, filler opening, return opening, oil outlet, armature assembly, electromagnetic coil and integrated magnetic tube, valve pocket is hollow structure, relief pressure valve cartridge is equipped with in valve pocket inside, the sidewall of valve pocket offers filler opening and return opening, the top of valve pocket is positioned at the integrated magnetic pole of valve pocket, valve pocket inside is provided with throttling pad, throttling pad passing hole back-up ring is fixed on valve pocket, the middle part of relief pressure valve cartridge offers radial throttle orifice, throttle orifice is communicated with oil outlet, also guiding gutter is offered in the middle part of relief pressure valve cartridge, guiding gutter near filler opening side is provided with oil-feed side throttling step, guiding gutter near return opening side is provided with oil return side throttling step, magnetic tube is connected with valve pocket screw-thread fit, be provided with armature assembly between magnetic tube inner space and valve pocket, armature assembly comprises armature and push rod, push rod and armature interference fit, the other end of push rod passes the inside of valve pocket and contacts with relief pressure valve cartridge, and the outer wall of magnetic tube is equipped with electromagnetic coil.
Also be provided with hand reset pin bottom described armature assembly, hand reset pin is connected with armature through magnetic tube.
The sidewall of described electromagnetic coil is provided with wiring base.
The bottom of described magnetic tube is provided with electromagnetic coil nut, is provided with coil gasket between electromagnetic coil nut and electromagnetic coil.
The present invention has the following advantages:
1, the push rod of armature assembly is directly inserted in the hole of armature, ensure that push rod is in central position, simplifies the assembling mode of armature assembly.
2, the stainless steel parts having prior art to adopt every magnetic mode of electromagnet changes magnetic tube that composite material makes into every magnetic every magnetic, avoids the fault that stainless steel parts causes owing to easily magnetizing, rate of fault is reduced significantly.
3, magnetic tube adopts a kind of composite material integral formed, instead of usually divides three sections to be welded with bi-material, simplified manufacturing technique and reducing costs.
4, valve pocket and magnetic pole are made of one, instead of two parts, ensure that the concentricity between magnetic pole and valve pocket.
5, the proportional pressure-reducing valve designed by the present invention, its outlet pressure is low, and can adjust mouth pressure according to size of current, and electric current is larger, and inlet and outlet pressure is larger, and ratio is functional.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1-valve pocket, 2-relief pressure valve cartridge, 3-filler opening, 4-magnetic pole, 5-throttling pad, 6-hole back-up ring, 7-oil outlet, 8-throttle orifice, 9-guiding gutter, 10-electromagnetic coil, 11-armature assembly, 12-magnetic tube, 13-hand reset pin, 14-electromagnetic coil nut, 15-coil gasket, 16-wiring base, 17-armature, 18-push rod, 19-oil-feed side throttling step, 20-oil return side throttling step, 21-return opening.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, a kind of proportional pressure-reducing valve, it is characterized in that: it comprises valve pocket 1, relief pressure valve cartridge 2, magnetic pole 4, filler opening 3, return opening 21, oil outlet 7, armature assembly 11, electromagnetic coil 10 and integrated magnetic tube 12, valve pocket 1 is hollow structure, relief pressure valve cartridge 2 is equipped with in valve pocket 1 inside, the sidewall of valve pocket 1 offers filler opening 3 and return opening 21, the top of valve pocket 1 is positioned at the integrated magnetic pole 4 of valve pocket 1, valve pocket 1 inside is provided with throttling pad 5, throttling pad 5 passing hole back-up ring 6 is fixed on valve pocket 1, the middle part of relief pressure valve cartridge 2 offers radial throttle orifice 8, throttle orifice 8 is communicated with oil outlet 7, guiding gutter 9 is also offered in the middle part of relief pressure valve cartridge 2, guiding gutter 9 near filler opening 3 side is provided with oil-feed side throttling step 19, guiding gutter 9 near return opening 21 side is provided with oil return side throttling step 20, magnetic tube 12 is connected by screw-thread fit with valve pocket 1, armature assembly 11 is provided with between magnetic tube 12 inner space and valve pocket 1, armature assembly 11 comprises armature 17 and push rod 18, push rod 18 and armature 17 interference fit, the other end of push rod 18 passes the inside of valve pocket 1 and contacts with relief pressure valve cartridge 2, the outer wall of magnetic tube 12 is equipped with electromagnetic coil 10, also be provided with hand reset pin 13 bottom armature assembly 11, hand reset pin 13 is connected with armature 17 through magnetic tube 12, the sidewall of electromagnetic coil 10 is provided with wiring base 16, the bottom of magnetic tube 12 is provided with electromagnetic coil nut 14, is provided with coil gasket 15 between electromagnetic coil nut 14 and electromagnetic coil 10.
Working procedure of the present invention is as follows: electromagnetic coil 10 and external dc power are connected by wiring base 16, when electromagnetic coil 10 and magnetic tube 12 acting in conjunction, armature assembly 11 to be turned right promotion, push rod 18 promotes relief pressure valve cartridge 2, fluid enters in valve from filler opening 3, flow to the throttle orifice 8 of relief pressure valve cartridge 2 through oil-feed side throttling step 19 and guiding gutter 9, then flow to oil outlet 7 through the axial bore of relief pressure valve cartridge 2.The pressure of oil outlet 7 fluid is directly proportional to electromagnetic force, and electromagnetic force is directly proportional to electric current, and namely the outlet pressure of reduction valve is directly proportional to electric current.When reduction valve power-off, by the faint pressure of oil outlet 7, relief pressure valve cartridge 2 promotes left, close the opening between oil-feed side throttling step 19 and filler opening 3, the fuel-displaced side throttling step 20 on relief pressure valve cartridge 2 left side moves to left simultaneously, and fuel-displaced side throttling step 20 is communicated with return opening 21, like this, the pressure of oil outlet 7 is equal with return opening 21, and the fluid of return opening 21 generally directly links fuel tank, and the pressure of oil outlet 7 reduces.
Claims (4)
1. a proportional pressure-reducing valve, it is characterized in that: it comprises valve pocket (1), relief pressure valve cartridge (2), magnetic pole (4), filler opening (3), return opening (21), oil outlet (7), armature assembly (11), electromagnetic coil (10) and integrated magnetic tube (12), valve pocket (1) is hollow structure, relief pressure valve cartridge (2) is equipped with in valve pocket (1) inside, the sidewall of valve pocket (1) offers filler opening (3) and return opening (21), the top of valve pocket (1) is positioned at valve pocket (1) integrated magnetic pole (4), valve pocket (1) inside is provided with throttling pad (5), throttling pad (5) passing hole back-up ring (6) is fixed on valve pocket (1), the middle part of relief pressure valve cartridge (2) offers radial throttle orifice (8), throttle orifice (8) is communicated with oil outlet (7), relief pressure valve cartridge (2) middle part also offers guiding gutter (9), guiding gutter (9) near filler opening (3) side is provided with oil-feed side throttling step (19), guiding gutter (9) near return opening (21) side is provided with oil return side throttling step (20), magnetic tube (12) is connected by screw-thread fit with valve pocket (1), armature assembly (11) is provided with between magnetic tube (12) inner space and valve pocket (1), armature assembly (11) comprises armature (17) and push rod (18), push rod (18) and armature (17) interference fit, the other end of push rod (18) passes the inside of valve pocket (1) and contacts with relief pressure valve cartridge (2), the outer wall of magnetic tube (12) is equipped with electromagnetic coil (10).
2. a kind of proportional pressure-reducing valve according to claim 1, is characterized in that: described armature assembly (11) bottom is also provided with hand reset pin (13), and hand reset pin (13) is connected with armature (17) through magnetic tube (12).
3. a kind of proportional pressure-reducing valve according to claim 1, is characterized in that: the sidewall of described electromagnetic coil (10) is provided with wiring base (16).
4. a kind of proportional pressure-reducing valve according to claim 1, is characterized in that: the bottom of described magnetic tube (12) is provided with electromagnetic coil nut (14), is provided with coil gasket (15) between electromagnetic coil nut (14) and electromagnetic coil (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007518.3A CN103075380B (en) | 2013-01-09 | 2013-01-09 | Proportional pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007518.3A CN103075380B (en) | 2013-01-09 | 2013-01-09 | Proportional pressure-reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103075380A CN103075380A (en) | 2013-05-01 |
| CN103075380B true CN103075380B (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310007518.3A Expired - Fee Related CN103075380B (en) | 2013-01-09 | 2013-01-09 | Proportional pressure-reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103075380B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574844A (en) * | 1984-11-13 | 1986-03-11 | Mac Valves, Inc. | Four-way poppet valve |
| CN2234530Y (en) * | 1994-11-23 | 1996-09-04 | 华克明 | Reduced pressure magneto-controlled water valve |
| CN2272083Y (en) * | 1996-05-20 | 1998-01-07 | 杭州精工液压机电有限公司 | Differential pressure feedback cone valve electrohydraulic proportional pressure reducing vavle |
| CN1337539A (en) * | 2001-09-05 | 2002-02-27 | 宁波华液机器制造有限公司 | Pressure difference feedback type precontrolled slide valve |
| CN201202843Y (en) * | 2008-06-20 | 2009-03-04 | 重庆工学院 | Direct drive type electric control overlapped overflow valve |
| CN203114765U (en) * | 2013-01-09 | 2013-08-07 | 青神格林维尔流体动力控制技术有限公司 | Proportional pressure reducing valve |
-
2013
- 2013-01-09 CN CN201310007518.3A patent/CN103075380B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574844A (en) * | 1984-11-13 | 1986-03-11 | Mac Valves, Inc. | Four-way poppet valve |
| CN2234530Y (en) * | 1994-11-23 | 1996-09-04 | 华克明 | Reduced pressure magneto-controlled water valve |
| CN2272083Y (en) * | 1996-05-20 | 1998-01-07 | 杭州精工液压机电有限公司 | Differential pressure feedback cone valve electrohydraulic proportional pressure reducing vavle |
| CN1337539A (en) * | 2001-09-05 | 2002-02-27 | 宁波华液机器制造有限公司 | Pressure difference feedback type precontrolled slide valve |
| CN201202843Y (en) * | 2008-06-20 | 2009-03-04 | 重庆工学院 | Direct drive type electric control overlapped overflow valve |
| CN203114765U (en) * | 2013-01-09 | 2013-08-07 | 青神格林维尔流体动力控制技术有限公司 | Proportional pressure reducing valve |
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| Publication number | Publication date |
|---|---|
| CN103075380A (en) | 2013-05-01 |
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Granted publication date: 20150527 |