CN204592455U - A kind of hydrovalve - Google Patents
A kind of hydrovalve Download PDFInfo
- Publication number
- CN204592455U CN204592455U CN201520198955.2U CN201520198955U CN204592455U CN 204592455 U CN204592455 U CN 204592455U CN 201520198955 U CN201520198955 U CN 201520198955U CN 204592455 U CN204592455 U CN 204592455U
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- CN
- China
- Prior art keywords
- spool
- pressure
- plug
- weakening
- valve
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of hydrovalve, comprise valve body, spool, pressure-regulating device, described pressure-regulating device comprises pressure regulating screw and pressure adjusting spring, described pressure regulating screw is connected with spring seat through valve gap, and this hydrovalve also comprises weakening plug, and described weakening plug is connected in valve core inside hole, one end of described pressure adjusting spring mounts elastically, the other end is arranged on the upper end of spool, and described spool has two flanks, and flank slides in valve body hole; The top of described weakening plug is provided with vibration absorber, and described vibration absorber is connected on spool.The utility model, by being provided with weakening plug and vibration absorber, can reduce noise and vibration, improves the working life of valve.
Description
Technical field
The utility model belongs to field of hydraulic control, particularly relates to a kind of hydrovalve.
Background technique
Hydraulic control valve is the control unit in hydraulic system, and its function is the flow direction of liquid in hydraulic control system, pressure and flow, with make the operation mechanism of hydraulic actuator and driving thereof obtain required for moving direction, movement velocity and thrust etc.Almost any one hydraulic system all will use relief valve, and 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.
Model utility content
The utility model, in order to overcome deficiency of the prior art, provides a kind of hydrovalve, effectively can eliminate the noise and vibration of hydrovalve.
The utility model is achieved through the following technical solutions:
A kind of hydrovalve, comprise valve body, spool, pressure-regulating device, described pressure-regulating device comprises pressure regulating screw and pressure adjusting spring, described pressure regulating screw is connected with spring seat through valve gap, and this hydrovalve also comprises weakening plug, and described weakening plug is connected in valve core inside hole, one end of described pressure adjusting spring mounts elastically, the other end is arranged on the upper end of spool, and described spool has two flanks, and flank slides in valve body hole; The top of described weakening plug is provided with vibration absorber, and described vibration absorber is connected on spool.
As optimal technical scheme of the present utility model, offer damping hole in described valve body and interiorly unload oilhole, unloading oilhole in described and connect oil outlet and communicate with valve pocket.
As optimal technical scheme of the present utility model, described oil outlet and filler opening are arranged on the not homonymy of valve body.
As optimal technical scheme of the present utility model, between described weakening plug and vibration absorber, there is space.
As optimal technical scheme of the present utility model, described pressure adjusting spring is soft straight spring.
Compared with prior art, the beneficial effects of the utility model are: the utility model, by being provided with weakening plug and vibration absorber, can reduce noise and vibration, improve the working life of valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-valve body; 2-spool; 3-pressure regulating screw; 4-pressure adjusting spring; 5-valve gap; 6-spring seat; 7-weakening plug; 8-vibration absorber; 9-damping hole; Oilhole is unloaded in 10-; P-filler opening; T-oil outlet.
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.
Described a kind of hydrovalve, comprise valve body 1, spool 2, pressure-regulating device, described pressure-regulating device comprises pressure regulating screw 3 and pressure adjusting spring 4, described pressure regulating screw 3 is connected with spring seat 6 through valve gap 5, and this hydrovalve also comprises weakening plug 7, and described weakening plug 7 is connected in spool 2 internal holes, one end of described pressure adjusting spring 4 is arranged on spring seat 6, the other end is arranged on the upper end of spool 2, and described spool 2 has two flanks, and flank slides in valve body hole; The top of described weakening plug 7 is provided with vibration absorber 8, and described vibration absorber 8 is connected on spool 2, by being provided with weakening plug and vibration absorber, can reduce noise and vibration, improves the working life of valve.Between described weakening plug 7 and vibration absorber 8, there is space, the noise that hydrovalve produces in running can be reduced further.
Offer damping hole 9 in described valve body 1 and interiorly unload oilhole 10, unload oilhole 10 in described and connect oil outlet T and communicate with valve pocket, described oil outlet T and oil inlet P are arranged on the not homonymy of valve body 1.
In the present embodiment: described pressure adjusting spring 4 is soft straight spring.
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 9 in described valve body 1 and interiorly unload oilhole 10, unloading oilhole 10 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 9 belongs to dynamic hydraulic damping, for reducing the vibration of spool 2 when pressure changes, improves stability.
Described pressure adjusting spring 4 is volute spring, can improve stability, reduces the generation of concussion.
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 (5)
1. a hydrovalve, comprise valve body (1), spool (2), pressure-regulating device, described pressure-regulating device comprises pressure regulating screw (3) and pressure adjusting spring (4), described pressure regulating screw (3) is connected with spring seat (6) through valve gap (5), it is characterized in that: also comprise weakening plug (7), described weakening plug (7) is connected in spool (2) internal holes, one end of described pressure adjusting spring (4) is arranged on spring seat (6), the other end is arranged on the upper end of spool (2), and described spool (2) has two flanks, flank slides in valve body hole; The top of described weakening plug (7) is provided with vibration absorber (8), and described vibration absorber (8) is connected on spool (2).
2. a kind of hydrovalve according to claim 1, is characterized in that: offer damping hole (9) in described valve body (1) and interiorly unload oilhole (10), unloads oilhole (10) and connect oil outlet (T) and communicate with valve pocket in described.
3. a kind of hydrovalve according to claim 2, is characterized in that: described oil outlet (T) and filler opening (P) are arranged on the not homonymy of valve body (1).
4. a kind of hydrovalve according to claim 1, is characterized in that: have space between described weakening plug (7) and vibration absorber (8).
5. a kind of hydrovalve according to claim 1, is characterized in that: described pressure adjusting spring (4) is soft straight spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198955.2U CN204592455U (en) | 2015-04-03 | 2015-04-03 | A kind of hydrovalve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198955.2U CN204592455U (en) | 2015-04-03 | 2015-04-03 | A kind of hydrovalve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204592455U true CN204592455U (en) | 2015-08-26 |
Family
ID=53928607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520198955.2U Expired - Fee Related CN204592455U (en) | 2015-04-03 | 2015-04-03 | A kind of hydrovalve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204592455U (en) |
-
2015
- 2015-04-03 CN CN201520198955.2U patent/CN204592455U/en not_active Expired - Fee Related
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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: 20150826 Termination date: 20170403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |