CN105156388A - Overflow valve - Google Patents
Overflow valve Download PDFInfo
- Publication number
- CN105156388A CN105156388A CN201510535537.2A CN201510535537A CN105156388A CN 105156388 A CN105156388 A CN 105156388A CN 201510535537 A CN201510535537 A CN 201510535537A CN 105156388 A CN105156388 A CN 105156388A
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- CN
- China
- Prior art keywords
- valve
- spring
- upper cover
- valve seat
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses an overflow valve. The overflow valve comprises a valve body, a valve element, a valve seat, an upper cover, a spring, a spring upper base, an adjusting screw, sealing gaskets, lock nuts and damping cushions. The upper cover is located above the valve seat. The upper cover and the valve seat are assembled with the valve body at the same time. The spring is assembled in an inner cavity of the upper cover. The spring upper base is arranged at the upper end of the spring. The adjusting screw is arranged above the spring upper base. The sealing gaskets and the lock nuts are assembled on the adjusting screw. The lower end of the spring and the valve element are assembled. The valve seat is provided with an oil inlet hole, and the upper cover is provided with an oil outlet hole. The valve element is provided with a through hole and a guiding-out hole. The damping cushions are assembled between the valve element and the valve seat. The overflow valve has the beneficial effects that the overflow valve is simple and reasonable in structure, the resonance is effectively reduced, and noise is lowered; and it is guaranteed that hydraulic oil more completely flows out through double-channel overflow, deposition caused by downward flowing of polluted hydraulic oil is prevented, the service life of the overflow valve is effectively prolonged, and popularization is facilitated.
Description
Technical field
The invention belongs to hydrovalve technical field, be specifically related to a kind of novel relief valve.
Background technique
Relief valve is the important hydraulic element playing pressure security protective action and overload (secondary or multistage) safety protection effect in the middle of all kinds of hydraulic system; also the concentrated oil circuit that plug-in overflow valve and overload valve plug compositional optimization in various multi-way valve can be made; safe and reliable; durable in use, be indispensable helper in the hydraulic systems such as lifting, transport, metallurgy, mine, engineering machinery, environmental sanitation machinery.Now, pilot operated compound relief valve advanced is both at home and abroad the main flow in hydraulic system, but traditional directly controlled type relief valve for those rugged environment and require Security high system in the middle of be also indispensable.For pilot operated compound relief valve; although properties is relatively good; but contamination resistance is poor, be used in the higher hydraulic system of precision relatively good, if but user environment is poor; hydraulic oil pollution is more serious; just often there will be the blocking of relief valve spool damping hole, once blocking, system will be paralysed; there is noise large, the defect that the life-span is short.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of structure and simply, effectively reducing noise and a kind of relief valve increasing working life.
The technical solution adopted for the present invention to solve the technical problems is: a kind of relief valve of the present invention, comprise valve body, spool, valve seat, upper cover, spring, the spring seat of honour, adjustment screw, gasket seal, locking nut and weakening pad, wherein upper cover is positioned at the top of valve seat, upper cover and valve seat assemble with valve body simultaneously, spring is assemblied in cover cavity, the spring upper end mounting spring seat of honour, equipment adjustment screw above the spring seat of honour, the decrement of spring can be adjusted by the adjustment of adjustment screw, according to the air pressure of actual service condition adjustment inner chamber, gasket seal and locking nut are assemblied in and adjust on screw, for fastening whole overflow-valve device, the lower end of spring and spool assemble, can effectively prevent hydraulic oil from leaking simultaneously, wherein valve seat is provided with oil inlet hole, on cover and be provided with oil outlet, spool is provided with through hole and leadout hole, and wherein the upper end of spool is conical section, and lower end is pilot valve part, multiple leadout hole is laterally positioned at the pilot valve part of spool, weakening pad is assemblied between spool and valve seat, and particular location is assemblied between every two leadout holes, for upsetting resonant frequency during pilot valve componental movement, reduce the possibility that resonance occurs, effectively reduce noise.
The invention has the beneficial effects as follows: this relief valve, simple and reasonable, effective generation reducing resonance, reduce noise, Twin channel overflow ensures hydraulic oil outflow more completely, flow downward after preventing hydraulic oil contaminated and cause deposition, effectively improve the working life of relief valve, be conducive to promoting.
Accompanying drawing explanation
Fig. 1 is the sectional view of plan view of the present invention;
Fig. 2 is perspective view of the present invention.
Description of reference numerals:
1, valve body 2, spool 2-1, through hole 2-2, leadout hole 3, valve seat 3-1, oil inlet hole 4, upper cover
4-1, oil outlet 5, spring 6, the spring seat of honour 7, adjustment screw 8, gasket seal 9, locking nut
10, weakening pad
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1-Fig. 2 shows a kind of relief valve of the present invention, comprise valve body 1, spool 2, valve seat 3, upper cover 4, spring 5, the spring seat of honour 6, adjustment screw 7, gasket seal 8, locking nut 9 and weakening pad 10, wherein upper cover 4 is positioned at the top of valve seat 3, upper cover 4 assembles with valve body 1 with valve seat 3 simultaneously, spring 5 is assemblied in upper cover 4 inner chamber, the mounting spring seat of honour, spring 5 upper end 6, equipment adjustment screw 7 above the spring seat of honour 6, the decrement of spring 5 can be adjusted by the adjustment of adjustment screw 7, according to the air pressure of actual service condition adjustment inner chamber, gasket seal 8 and locking nut 9 are assemblied in and adjust on screw 7, for fastening whole overflow-valve device, lower end and the spool 2 of spring 5 assemble, can effectively prevent hydraulic oil from leaking simultaneously, wherein valve seat 3 is provided with oil inlet hole 3-1, upper cover 4 is provided with oil outlet 4-1, spool 2 is provided with through hole 2-1 and leadout hole 2-2, wherein the upper end of spool 2 is conical section, lower end is pilot valve part, multiple leadout hole 2-2 is laterally positioned at the pilot valve part of spool 2, weakening pad 10 is assemblied between spool 2 and valve seat 3, particular location is assemblied between every two leadout hole 2-2, for upsetting resonant frequency during pilot valve componental movement, reduce the possibility that resonance occurs, effective minimizing noise.
Working procedure of the present invention is: when hydraulic oil enters valve seat 2 inner chamber from oil inlet hole 3-1, when the hydraulic oil pressure back valve core 2 that acquires a certain degree moves up, gap is produced between the conical section of spool 2 and valve seat 3, major part hydraulic oil is derived by oil outlet 4-1, wherein sub-fraction hydraulic oil can enter leadout hole 2-2 along with pilot valve part moves up and down by through hole 2-1, then will overflowing when liquid in leadout hole 2-2 slowly rises above the upper surface of valve body time flows downward is flowed out by oil outlet 4, more than complete the working procedure of relief valve of the present invention, hydraulic oil outflow is more completely ensured by Twin channel overflow, flow downward after preventing hydraulic oil contaminated and cause deposition, the working life of effective raising relief valve.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technological scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that performing creative labour can make still within protection scope of the present invention.
Claims (3)
1. a relief valve, it is characterized in that: comprise valve body, spool, valve seat, upper cover, spring, the spring seat of honour, adjustment screw, gasket seal, locking nut and weakening pad, described upper cover is positioned at the top of valve seat, described upper cover and valve seat assemble with valve body simultaneously, described spring is assemblied in cover cavity, the described spring upper end mounting spring seat of honour, equipment adjustment screw above the described spring seat of honour, described gasket seal and locking nut are assemblied in and adjust on screw, the lower end of described spring and spool assemble, described valve seat is provided with oil inlet hole, cover on described and be provided with oil outlet, described spool is provided with through hole and leadout hole, wherein the upper end of spool is conical section, lower end is pilot valve part, described weakening pad is assemblied between spool and valve seat.
2. a kind of relief valve according to claim 1, is characterized in that: described multiple leadout hole is laterally positioned at the pilot valve part of spool.
3. according to a kind of relief valve according to claim 1 or claim 2, it is characterized in that: the particular location of described weakening pad is assemblied between every two leadout holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535537.2A CN105156388A (en) | 2015-08-27 | 2015-08-27 | Overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535537.2A CN105156388A (en) | 2015-08-27 | 2015-08-27 | Overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105156388A true CN105156388A (en) | 2015-12-16 |
Family
ID=54797384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510535537.2A Pending CN105156388A (en) | 2015-08-27 | 2015-08-27 | Overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105156388A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715621A (en) * | 2016-04-28 | 2016-06-29 | 黄斌 | Direct relief valve with guide structure |
| CN107559257A (en) * | 2017-09-11 | 2018-01-09 | 雷沃重工股份有限公司 | A kind of overflow valve |
| CN108317031A (en) * | 2018-02-09 | 2018-07-24 | 中国第汽车股份有限公司 | Fuel supply keeps valve |
| CN111094761A (en) * | 2018-01-31 | 2020-05-01 | Ｋｙｂ株式会社 | Valve device |
-
2015
- 2015-08-27 CN CN201510535537.2A patent/CN105156388A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715621A (en) * | 2016-04-28 | 2016-06-29 | 黄斌 | Direct relief valve with guide structure |
| CN107559257A (en) * | 2017-09-11 | 2018-01-09 | 雷沃重工股份有限公司 | A kind of overflow valve |
| CN111094761A (en) * | 2018-01-31 | 2020-05-01 | Ｋｙｂ株式会社 | Valve device |
| CN108317031A (en) * | 2018-02-09 | 2018-07-24 | 中国第汽车股份有限公司 | Fuel supply keeps valve |
| CN108317031B (en) * | 2018-02-09 | 2020-07-17 | 中国第一汽车股份有限公司 | Fuel supply holding valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151216 |