CN204677838U - Ultrahigh pressure direct-acting type transient equilibrium valve - Google Patents
Ultrahigh pressure direct-acting type transient equilibrium valve Download PDFInfo
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- CN204677838U CN204677838U CN201520392336.7U CN201520392336U CN204677838U CN 204677838 U CN204677838 U CN 204677838U CN 201520392336 U CN201520392336 U CN 201520392336U CN 204677838 U CN204677838 U CN 204677838U
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Abstract
The utility model is a kind of ultrahigh pressure direct-acting type transient equilibrium valve.Described equilibrium valve comprises valve body and valve end cap, between valve end cap and valve body, bonded washer is housed, spool and spring is provided with at the inner chamber of valve body, it is characterized in that: offer spool bore at valve end cap near the side of valve pocket, the valve rod tail end of described spool is embedded in spool bore, and in a quiescent state, the valve port on valve body is blocked at its cone tip to spool, offer dashpot at spool cone tip, be provided with spool positioning block at spool near the position that cone is most advanced and sophisticated; Described spring housing is located at the valve rod position of spool, and is made up of mutually nested large and small spring, and wherein the external diameter of big spring is equal with the internal diameter of body cavity, and the internal diameter of little spring is equal with the external diameter in valve core rod portion.The utility model takes up space little, and cracking pressure is high, long service life.Have and open and close rapidly, reliability is high, keeps in repair the functions such as easy.
Description
Technical field
The utility model relates to valve, and particularly one is applicable to various high pressure hydraulic control selector valve, Pneumatic reversal valve, hand control change-over valve, the ultrahigh pressure direct-acting type transient equilibrium valve of high-pressure system etc.
Background technique
Relief valve conventional in current China market mostly is common direct-drive one-way valve and pilot operated compound relief valve two kinds.Although these valves are also very convenient in use, effectively can not play a role in high-pressure system, although common direct-drive one-way valve is opened sensitive, can not high-pressure system be met; Although pilot operated compound relief valve is applicable to high-pressure system, volume is too large, and be not suitable for being made of one with selector valve, spool is easily stuck, and high expensive.Because domestic market is more and more wider to the use of hydraulic system, the especially use of high-pressure system in engineering machinery.Relief valve can play pressure-regulating overflow respectively in hydraulic system, safety protection, long-range pressure regulation, etc.Relief valve is control unit very important in hydraulic system, and the service behaviour impact of quality on hydraulic system of its service behaviour is very large.In high-pressure system, pilot operated compound relief valve often occurs due to spool jam, causes the situation of the disabler of relief valve, and installing space is limited cannot be used; Common direct-acting overflow valve can not meet the requirement of ultrahigh pressure or working life short, therefore, be necessary to make improvements on prior art basis.
Summary of the invention
The purpose of this utility model is the defect existed for solving prior art, can not meet high-pressure system demand, propose a kind of novel ultrahigh pressure direct-acting type transient equilibrium valve for general expression relief valve.
The technological scheme that the utility model provides: described a kind of ultrahigh pressure direct-acting type transient equilibrium valve comprises valve body and valve end cap, valve end cap is screwed in the tapped hole of valve body, and between valve end cap and valve body, bonded washer is housed, spool and spring is provided with at the inner chamber of valve body, it is characterized in that: offer spool bore at valve end cap near the side of valve pocket, the valve rod tail end of described spool is embedded in spool bore, spool in a quiescent state, the most advanced and sophisticated valve port blocked on valve body of its cone, spool in working order under, its valve rod tail end moves unlatching valve port along spool bore, dashpot is offered at spool cone tip, spool positioning block is provided with near the position that cone is most advanced and sophisticated at spool, the diameter of described spool positioning block is equal with the internal diameter of body cavity, described spring housing is located at the valve rod position of spool, and spring is made up of mutually nested large and small spring, and wherein the external diameter of big spring is equal with the internal diameter of body cavity, and the internal diameter of little spring is equal with the external diameter in valve core rod portion.
The utility model is technological scheme preferably: described dashpot is arc groove, is arranged on the most advanced and sophisticated position near spool positioning block end face of spool cone.
The utility model is technological scheme preferably: be provided with one or more pad in one end of spring, or do not establish pad, and when being provided with pad, described pad is set in outside spool, adjusts cracking pressure within the specific limits by increase and decrease pad.
The utility model is technological scheme preferably: described in be opened in the spool bore internal diameter inside valve end cap equal with the valve rod external diameter of spool, its length is the spool length of tail end Embedded Division and distance sum of spool movement in body cavity when not working.
The utility model is technological scheme preferably: on the valve rod on rear side of the spool positioning block that described spring housing is located at spool, and be provided with gap between mutually nested large and small spring
Described spring resets for waiting distortion abreast-type cluster spring, effectively ensure that the static characteristic of valve; Needle two ends are located, and effectively ensure that the reset of needle; The particular design of needle, effective cleaning valve port, better ensure that the sealability of valve.
The utility model operationally, when system pressure reaches the force value of big spring and little spring setting, open, system decompression by needle, when system pressure is less than the force value of big spring and little spring setting, under spring force, and needle close port.
The beneficial effects of the utility model:
(1) existing direct-acting overflow valve is that pressure oil in dependence system acts directly on spool and balances each other with spring force, to control the relief valve of the switching motion of spool; And the dual spring of the distortion such as the utility model employing abreast-type combination, the rigidity of spring is higher, the loading that can bear is larger, greatly reduce the dead band between open and close, improve the good static characteristic of relief valve, better improve the performance of spring, effectively ensure that the open and shut characteristic of this model utility;
(2) the utility model is difficult to be controlled for the turbidity test of domestic market hydraulic system, often because valve cone place has foreign matter to cause the leakage rate of valve overproof, the even situation of disabler, has done particular design to needle, is provided with arc buffering groove at the cone tip of needle, when valve opening, high-voltage oil liquid forms eddy current at valve port place, can rushing the foreign matter except sticking to valve port, effectively ensure that the sealability of valve, and stable performance, safe and reliable.
(3) the utility model is provided with and valve pocket Spielpassung fixture block in the position near needle tip, needle tail end coordinates with interporal lacuna on end cap, formed and locate up and down, make needle neither crooked when opening and closing, not beat again, significantly improve the reseting performance of needle, better protection valve port does not sustain damage, and improves the working life of valve and the service behaviour of valve greatly;
(4) model utility by both ends of the spring increase and decrease pad, can adjust cracking pressure, meets the requirement of different client, highly versatile within the specific limits.
The utility model is while the performance possessing other similar valve and advantage, and by structural improvement, compensate for that it is not enough, make pressure more stable, the static characteristic of valve is better, is applicable in various high-pressure system and safety valve on selector valve.The utility model compact structure, external form is small and exquisite, easy to assembly, saves installing space and the cost of raw material to greatest extent, and has keying rapidly, and reliability is high, keeps in repair easy, etc. feature.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model does not establish pad;
Fig. 2 is the structural representation that the utility model establishes pad;
Fig. 3 is fundamental diagram of the present utility model.
In figure: 1-valve end cap, 2-bonded washer, 3-spool, 4-spool bore, 5-valve body, 6-valve port, 7-spool positioning block, 8-big spring, 9-little spring, 10-body cavity, 11-dashpot, 12-pad.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.Enforcement illustration as of the present utility model in Fig. 1 and Fig. 2, a kind of ultrahigh pressure direct-acting type transient equilibrium valve as illustrated in the drawing, comprise valve body 5 and valve end cap 1, valve end cap 1 is screwed in the tapped hole of valve body 5, and between valve end cap 1 and valve body 5, bonded washer 2 is housed, spool 3 and spring is provided with at the inner chamber of valve body 1, it is characterized in that: offer spool bore 4 at valve end cap 1 near the side of valve pocket, described spool bore 4 internal diameter is equal with the valve rod trailing end outer diameter of spool 3, its length is the spool length of tail end Embedded Division and distance sum of spool 3 movement in body cavity 10 when not working.The valve rod tail end of described spool 3 is embedded in spool bore 4, spool in a quiescent state, the most advanced and sophisticated valve port 6 always blocked in the effect of spring on valve body 5 of its cone, spool in working order under, its valve rod tail end moves along spool bore 4 under the action of the spring and opens valve port 6.
As shown in Figure 1, spool positioning block 7 is provided with near the position that cone is most advanced and sophisticated at spool, described spool positioning block 7 is that circular location is wide, its diameter is equal with the internal diameter of body cavity 10, and the cone tip being just stuck in body cavity 10 pairs of spools positions, and adds spool tail end and is located by spool bore 4, it is neither crooked when needle 6 is opened and closed, not beat again, spool can, along rectilinear movement, guarantee valve port to block.Bore tip at spool 3 and offer dashpot 11, described dashpot 11 is arc groove, be arranged on spool 3 and bore the position of most advanced and sophisticated both sides near spool positioning block 7 end face, when valve opening, high-voltage oil liquid forms eddy current at valve port place, can rushing the foreign matter except sticking to valve port, effectively ensure that the sealability of valve, and stable performance, safe and reliable.
As depicted in figs. 1 and 2, described spring housing is located on the valve rod on rear side of spool positioning block 7, and spring is by mutually nested large, little spring 8, 9 compositions, and it is mutually nested large, little spring 8, gap is provided with between 9, two springs are avoided to influence each other in the course of the work, mutually nested is large, little spring 8, the external diameter being provided with gap wherein big spring 8 between 9 is equal with the internal diameter of body cavity 10, can block main with body cavity 10, the internal diameter of little spring 9 is equal with the external diameter in valve core rod portion, can be stuck on spool, adopt the nested cluster spring of size, the rigidity of spring is higher, the load that can bear is larger, better improve the performance of spring, effectively ensure that the open and shut characteristic of this model utility.One or more pad 12 can be provided with in one end of spring, or not establish pad, by both ends of the spring increase and decrease pad, adjust cracking pressure within the specific limits, meet the requirement of different client, highly versatile.When being provided with pad 12, described pad 12 is set in outside spool 3.
The valve port on valve body 5 is blocked at spool tip of the present utility model, under the effect of big spring 8 and little spring 9, block valve port when spool 3 does not work always, when system pressure reaches the force value of spring 8 and little spring 9 setting, needle is opened, system decompression, when system pressure is less than the force value of spring 8 and little spring 9 setting, under the effect of dual spring power, needle close port.
Fig. 3 illustrates working principle of the present utility model.Below in conjunction with Fig. 1 and Fig. 2, be used for the safety valve of selector valve with this valve and its working principle is described: 3 spools get lodged in valve port 6 all the time under the effect of spring 8 and little spring 9, when system pressure reaches the force value of spring, the side of spool 3 along spool bore 4 to overflow end cap 1 is moved, open valve port 6, when system pressure is less than spring force value, move to the side of valve port 6 at the effect lower valve core 3 of spring 8 and little spring 9, close port, to ensure the pressure balance of system.
Claims (5)
1. a ultrahigh pressure direct-acting type transient equilibrium valve, comprise valve body (5) and valve end cap (1), valve end cap (1) is screwed in the tapped hole of valve body (5), and between valve end cap (1) and valve body (5), bonded washer (2) is housed, spool (3) and spring is provided with at the inner chamber of valve body (1), it is characterized in that: offer spool bore (4) at valve end cap (1) near the side of valve pocket, the valve rod tail end of described spool (3) is embedded in spool bore (4), spool in a quiescent state, the valve port (6) on valve body (5) is blocked at its cone tip, spool in working order under, its valve rod tail end opens valve port (6) along spool bore (4) is mobile, dashpot (11) is offered at spool (3) cone tip, spool positioning block (7) is provided with near the position that cone is most advanced and sophisticated at spool, the diameter of described spool positioning block (7) is equal with the internal diameter of body cavity (10), described spring housing is located at the valve rod position of spool (3), and spring is made up of mutually nested large and small spring (8,9), wherein the external diameter of big spring (8) is equal with the internal diameter of body cavity (10), and the internal diameter of little spring (9) is equal with the external diameter in valve core rod portion.
2. a kind of ultrahigh pressure direct-acting type transient equilibrium valve according to claim 1, it is characterized in that: described dashpot (11) is annular groove, be arranged on spool positioning block end face (3) and bore the position of most advanced and sophisticated both sides near spool positioning block (7).
3. a kind of ultrahigh pressure direct-acting type transient equilibrium valve according to claim 1, it is characterized in that: be provided with one or more pad (12) in one end of spring, or do not establish pad, when being provided with pad (12), described pad (12) is set in spool (3) outward.
4. a kind of ultrahigh pressure direct-acting type transient equilibrium valve according to claim 1, it is characterized in that: described in be opened in spool bore (4) internal diameter of valve end cap (1) inner side equal with the valve rod external diameter of spool (3), its length is the spool length of tail end Embedded Division and distance sum of spool (3) movement in body cavity (10) when not working.
5. a kind of ultrahigh pressure direct-acting type transient equilibrium valve according to claim 1, is characterized in that: described spring housing is located on the valve rod of spool positioning block (7) rear side of spool (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392336.7U CN204677838U (en) | 2015-06-09 | 2015-06-09 | Ultrahigh pressure direct-acting type transient equilibrium valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392336.7U CN204677838U (en) | 2015-06-09 | 2015-06-09 | Ultrahigh pressure direct-acting type transient equilibrium valve |
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| CN204677838U true CN204677838U (en) | 2015-09-30 |
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| CN201520392336.7U Active CN204677838U (en) | 2015-06-09 | 2015-06-09 | Ultrahigh pressure direct-acting type transient equilibrium valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224313A (en) * | 2016-08-22 | 2016-12-14 | 江苏二马液压元件有限公司 | A kind of pioneer pump overflow valve |
| CN106975190A (en) * | 2017-05-31 | 2017-07-25 | 湖南磐龙安全系统股份有限公司 | A kind of container value anti-leak switching device for Fire-extinguishing System of Septenary-Fluorine Propane |
| CN109073111A (en) * | 2016-04-06 | 2018-12-21 | 株式会社多田野 | Emergency operation valve and relief circuit |
| CN110499984A (en) * | 2019-09-17 | 2019-11-26 | 邓介明 | A kind of mandrel and device have the anti-violence universal hydraulic hinge of the mandrel |
-
2015
- 2015-06-09 CN CN201520392336.7U patent/CN204677838U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073111A (en) * | 2016-04-06 | 2018-12-21 | 株式会社多田野 | Emergency operation valve and relief circuit |
| CN109073111B (en) * | 2016-04-06 | 2019-12-13 | 株式会社多田野 | Emergency operation valve and unloading circuit |
| CN106224313A (en) * | 2016-08-22 | 2016-12-14 | 江苏二马液压元件有限公司 | A kind of pioneer pump overflow valve |
| CN106224313B (en) * | 2016-08-22 | 2018-02-27 | 江苏二马液压元件有限公司 | A kind of pioneer pump overflow valve |
| CN106975190A (en) * | 2017-05-31 | 2017-07-25 | 湖南磐龙安全系统股份有限公司 | A kind of container value anti-leak switching device for Fire-extinguishing System of Septenary-Fluorine Propane |
| CN106975190B (en) * | 2017-05-31 | 2022-07-29 | 磐龙安全技术有限公司 | Container valve leakage-proof switch device for heptafluoropropane fire extinguishing system |
| CN110499984A (en) * | 2019-09-17 | 2019-11-26 | 邓介明 | A kind of mandrel and device have the anti-violence universal hydraulic hinge of the mandrel |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |