CN204201265U - With the relief valve of damping cavity - Google Patents
With the relief valve of damping cavity Download PDFInfo
- Publication number
- CN204201265U CN204201265U CN201420648511.XU CN201420648511U CN204201265U CN 204201265 U CN204201265 U CN 204201265U CN 201420648511 U CN201420648511 U CN 201420648511U CN 204201265 U CN204201265 U CN 204201265U
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- Prior art keywords
- damping
- cavity
- valve
- spool
- seat
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Abstract
With a relief valve for damping cavity, comprise valve gap, valve body, spool, valve seat, screw press, pressure adjusting spring and spring seat; Described screw press is connected with spring seat through valve gap; Also comprise damper rod, damping sleeve and sealing seat, described spool is cavity, and described sealing seat is arranged in the dovetail groove of spool; Described damper rod by axially-aligned the different cylindrical body of scape form, wherein two terminal circle cylinder forms matching gap respectively at the corresponding endoporus of damping sleeve, and the cavity between described two matching gaps forms damping cavity; Compressible silicone fluid is filled with in described damping cavity; One end of described pressure adjusting spring is connected on spring seat, and the other end is connected on described sealing seat.The utility model, by setting up damping cavity, is filled with silicone fluid in damping cavity, is similar to formation hydraulic damper, so that eliminate vibration by increasing damping; Produce viscous damping force by the silicone fluid motion of high viscosity to consume energy simultaneously.
Description
Technical field
The utility model belongs to field of hydraulic control, particularly relates to a kind of relief valve with damping cavity.
Background technique
Relief valve is pressure control valve conventional in hydraulic system, can be used as level pressure relief valve or safety valve.The Main Function of relief valve is the overflow by valve port, makes the pressure remained constant in controlled system or loop, realizes pressure regulation, voltage stabilizing or pressure limiting (preventing overload).The kind of relief valve is a lot, and basic principle is variable restrictor and pressure feedback, the chock pressure difference produced when the controlled inlet pressure of valve flows to valve port from liquid.When system pressure increases, traffic demand can be made to reduce, now relief valve is opened, and excess traffic is overflow oil sump tank, ensures relief valve inlet pressure; When relief valve is connected on oil circuit, relief valve produces back pressure, and moving element stationarity increases.But relief valve in the course of the work, can produce noise, the noise of relief valve has flow velocity sound and mechanic sound two kinds.Primarily of the noise that the reasons such as fluid vibration, hole and hydraulic shock produce in flow velocity sound, primarily of the noise that the reasons such as the shock of part in valve and friction produce in mechanic sound.Owing to having elastic component (spring) and the existence of moving-mass (cone valve), constitute the condition that produces vibration, and pilot valve ante-chamber plays the effect of a resonant cavity, so cone valve easily causes the resonance of whole valve after vibrating and sends noise, when there is noise, be generally attended by violent pressure kick more.To produce because the unloading time of relief valve is very short caused by hydraulic shock when off-load simultaneously, because oily flow velocity sharply changes, cause pressure jump, the impact of build-up of pressure ripple.Pressure wave is a little shock wave, and the noise itself produced is very little, but passes in system with fluid, if resonated with any one mechanical parts, just may strengthen vibration and strengthen noise.Therefore how solving the vibration and noise of relief valve, is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
The utility model, in order to overcome deficiency of the prior art, provides a kind of relief valve with damping cavity, can stress release treatment and vibration effectively.
The utility model is achieved through the following technical solutions: a kind of relief valve with damping cavity, comprises valve gap, valve body, spool, valve seat, screw press, pressure adjusting spring and spring seat; Described screw press is connected with spring seat through valve gap; Also comprise damper rod, damping sleeve and sealing seat, described spool is cavity, and described sealing seat is arranged in the dovetail groove of spool; Described damper rod by axially-aligned the different cylindrical body of scape form, wherein two terminal circle cylinder forms matching gap respectively at the corresponding endoporus of damping sleeve, and the cavity between described two matching gaps forms damping cavity; Compressible silicone fluid is filled with in described damping cavity; One end of described pressure adjusting spring is connected on spring seat, and the other end is connected on described sealing seat.
In such scheme, related content is explained as follows:
1, in such scheme, offer damping hole in described valve body, the diameter of described damping hole is 3mm.Described damping hole belongs to dynamic hydraulic damping, for reducing the vibration of spool when pressure changes, improves stability;
2, in such scheme, described damper rod contacts to coordinate with spool cavity endoporus and transmits pressure adjusting spring power, and the contacting point of damper rod end and spool is sphere.
Compared with prior art, the beneficial effects of the utility model are: the utility model, by setting up damping cavity, is filled with silicone fluid in damping cavity, are similar to formation hydraulic damper, so that eliminate vibration by increasing damping; Produce viscous damping force by the silicone fluid motion of high viscosity to consume energy simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
With a relief valve for damping cavity, comprise valve gap 5, valve body 1, spool 2, valve seat 14, screw press 3, pressure adjusting spring 4 and spring seat 6; Described screw press 3 is connected with spring seat 6 through valve gap 5; Also comprise damper rod 12, damping sleeve 13 and sealing seat 9, described spool 2 is cavity, and described sealing seat 9 is arranged in the dovetail groove of spool 2; Described damper rod 13 is made up of the cylindrical body that the diameter of axially-aligned is different, and wherein two terminal circle cylinder forms matching gap respectively at the corresponding endoporus of damping sleeve 14, and the cavity between described two matching gaps forms damping cavity 7; Compressible silicone fluid 8 is filled with in described damping cavity 7; One end of described pressure adjusting spring 4 is connected on spring seat 6, and the other end is connected on described sealing seat 9.
Offer damping hole 10 in described valve body 1, the diameter of described damping hole 10 is 3mm.Described damping hole 10 belongs to dynamic hydraulic damping, for reducing the vibration of spool 2 when pressure changes, improves stability.
Described damper rod 13 contacts to coordinate with spool 2 cavity endoporus and transmits pressure adjusting spring power, and the contacting point of damper rod 13 end and spool 2 is sphere.
By setting up damping cavity, in damping cavity, being filled with silicone fluid, being similar to formation hydraulic damper, so that eliminate vibration by increasing damping; Produce viscous damping force by the silicone fluid motion of high viscosity to consume energy simultaneously.
Oil inlet P (connecing oil hydraulic pump or controlled pressure oil circuit) and the oil outlet T(connected tank of relief valve is had at the two ends, left and right of valve body 1), offer damping hole 10 in described valve body 1 and interiorly unload oilhole, unloading oilhole in described and connect oil outlet T and communicate with valve pocket.When spool 2 is closed under spring force, hydraulic fluid port P and T is spaced, and when hydraulic coupling is greater than the pre-force adjustment of spring, spool 2 rises, and valve port is opened, and pressure oil liquid is through oil outlet T overflow.Described damping hole 10 belongs to dynamic hydraulic damping, for reducing the vibration of spool 2 when pressure changes, improves stability.
The utility model the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1., with a relief valve for damping cavity, comprise valve gap, valve body, spool, valve seat, screw press, pressure adjusting spring and spring seat; Described screw press is connected with spring seat through valve gap; It is characterized in that: also comprise damper rod, damping sleeve and sealing seat, described spool is cavity, and described sealing seat is arranged in the dovetail groove of spool; Described damper rod by axially-aligned the different cylindrical body of scape form, wherein two terminal circle cylinder forms matching gap respectively at the corresponding endoporus of damping sleeve, and the cavity between described two matching gaps forms damping cavity; Compressible silicone fluid is filled with in described damping cavity; One end of described pressure adjusting spring is connected on spring seat, and the other end is connected on described sealing seat.
2. a kind of relief valve with damping cavity according to claim 1, is characterized in that: offer damping hole in described valve body, and the diameter of described damping hole is 3mm.
3. a kind of relief valve with damping cavity according to claim 1, is characterized in that: described damper rod contacts to coordinate with spool cavity endoporus and transmits pressure adjusting spring power, and the contacting point of damper rod end and spool is sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648511.XU CN204201265U (en) | 2014-11-03 | 2014-11-03 | With the relief valve of damping cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648511.XU CN204201265U (en) | 2014-11-03 | 2014-11-03 | With the relief valve of damping cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204201265U true CN204201265U (en) | 2015-03-11 |
Family
ID=52659227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420648511.XU Expired - Fee Related CN204201265U (en) | 2014-11-03 | 2014-11-03 | With the relief valve of damping cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204201265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559257A (en) * | 2017-09-11 | 2018-01-09 | 雷沃重工股份有限公司 | A kind of overflow valve |
| CN113280069A (en) * | 2021-05-24 | 2021-08-20 | 山东华伟液压科技有限公司 | Hydraulic shock absorption valve and shock absorber thereof |
-
2014
- 2014-11-03 CN CN201420648511.XU patent/CN204201265U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559257A (en) * | 2017-09-11 | 2018-01-09 | 雷沃重工股份有限公司 | A kind of overflow valve |
| CN113280069A (en) * | 2021-05-24 | 2021-08-20 | 山东华伟液压科技有限公司 | Hydraulic shock absorption valve and shock absorber thereof |
| CN113280069B (en) * | 2021-05-24 | 2023-01-17 | 山东华伟液压科技有限公司 | Shock absorber |
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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: 20150311 Termination date: 20151103 |
|
| EXPY | Termination of patent right or utility model |