CN203441853U - Pilot-operated type water pressure overflow valve of novel structure - Google Patents
Pilot-operated type water pressure overflow valve of novel structure Download PDFInfo
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- CN203441853U CN203441853U CN201320547696.0U CN201320547696U CN203441853U CN 203441853 U CN203441853 U CN 203441853U CN 201320547696 U CN201320547696 U CN 201320547696U CN 203441853 U CN203441853 U CN 203441853U
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Abstract
The utility model relates to a pilot-operated type water pressure overflow valve of a novel structure. The pilot-operated type water pressure overflow valve mainly comprises a main valve and a pilot valve. The main valve is of a two-level throttling structure with a high-pressure drainage hole and can effectively restrain gas etching and noise; the pilot valve is of a cone valve structure, a damping hole which can improve pressure setting precision of the overflow valve is additionally arranged at an inlet of the pilot valve, the damping hole is connected with a damping hole of the main valve in series, and the pressure setting precision of the overflow valve can be improved. Compared with the prior art, the pilot-operated type water pressure overflow valve has the advantages of being simple in structure, safe, environmentally friendly, resistant to gas etching, high in abrasion resistance and the like, and is suitable for middle-high pressure water medium occasions.
Description
Technical field
The utility model relates to valve class, relates in particular to a kind of leading type water pressure overflow valve of new structure.
Background technique
Hydraulic pressure transmission is direct seawater, fresh water or the high-water-based liquid novel hydraulic drive technology as working medium of usining, there are cheap, wide material sources, without transportation storage, environmental friendliness, purchase with user cost is low, can avoid or reduce the advantages such as contamination of products, flame retarding and Security are good, be widely used at present the industrial application such as food, papermaking, weaving, mining, medical machinery, fire-fighting, metallurgy, atomic power factory, ocean development.The physical propertys such as but the viscosity having due to glassware for drinking water is low, poor lubricity, electric conductivity strong, vaporization, working pressure height, have brought challenge also to the research of water hydraulics.
Water hydraulic relief valve is control unit important in water hydraulic system, in system, mainly plays steady pressure or safety protection, and the quality of its performance has significant impact to the normal operation of hydraulic system.Due to the special physical property of aqueous medium, cause water hydraulic relief valve to have a lot of technical barriers than oil pressure relief valve, such as cavitation erosion, leakage, corrosion etc.Therefore, research and develop a kind of antipollution, resistance to wear, the leading type water pressure overflow valve of safety and environmental protection has very high use value.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of leading type water pressure overflow valve of new structure.The utility model solves the technological scheme that its technical problem adopts:
A leading type water pressure overflow valve for new structure, comprises main valve and pilot valve;
Described main valve comprises main valve body, main valve housing, main valve plug, main spool spring; Between main valve plug periphery and main valve housing, taking Spielpassung, have two through holes on main valve plug, is main damping valve hole in small through hole, and main spool spring is housed in large through-hole, in main valve plug center hole, has radial direction through hole, has water intake and backwater mouth on main valve body;
Described pilot valve comprises guide valve blocks, weakening pad, guide's valve seat, guide's spool, pressure adjusting spring and spring seat, end cap; In guide's valve seat, have damping hole, upper end is guide's spool, lower end acts on weakening pad, Regulation spring two ends are spacing by the step of spring seat and the facies basialis pyramidis of guide's spool, on guide valve blocks, there are two through holes, through hole is communicated with main spool spring chamber and pilot valve ante-chamber, and through hole connects pilot valve spring chamber and backwater mouth.
Further, main valve plug is to have the two-step throttle structure that effective inhibition is cavitated, reduced vibration and noise, and has and can affect the high-pressure induct of main flow bundle hole at main valve plug center.
Further, formerly before pilot valve seat, set up weakening pad, can effectively reduce the noise and vibration of relief valve, and set up damping hole in pilot valve ingress, connect with main damping valve hole, can improve relief valve setting-pressure accuracy.
Compared with prior art, the beneficial effect having is the utility model:
1, utilize Fluent software to carry out flow field simulation main valve inner flow passage is optimized to design, make current more smooth, alleviated cavitation erosion and flow noise.
2, main valve plug be two-step throttle structure with main valve housing between form two settable orifices of connecting, the pressure drop in main valve chamber is born by two settable orifices, thereby has improved cavitation resistive property and the quiet dynamic characteristic of relief valve; In addition, at main valve plug center, have high-pressure induct hole, utilize high-pressure induct to affect main flow bundle, can effectively suppress cavitation erosion, reduce noise, reduce vibration.
3, formerly before pilot valve seat, set up weakening pad, can effectively reduce the noise and vibration of relief valve.
4, in pilot valve ingress, set up damping hole, make to connect with main damping valve hole, not only can improve relief valve setting-pressure accuracy, and can avoid elongated damping hole easily to occur the problem of stopping up.
5, the utility model is simple in structure, easy to operate, has antipollution, resistance to wears, the advantage such as safety and environmental protection.
Accompanying drawing explanation
If figure is the utility model structural representation.
Wherein: 1-O RunddichtringO, 2-main valve body, 3-O RunddichtringO, 4-back-up ring, 5-main valve plug, 6-main valve housing, 7-regulating hand wheel of pressure, 8-pressure regulating screw, 9-nut, 10-pilot valve valve gap, 11-spring seat, 12-pressure adjusting spring, 13-pilot valve, 14-guide valve seat, 15-weakening pad, 16-pilot valve body, 17-hex screw, 18-pilot valve damping hole, 19-main spool spring, 20-main damping valve hole, A-main valve, B-pilot valve, P-water intake, O-backwater mouth, a-main valve small through hole, b-main valve large through-hole, c-high-pressure induct hole, d-pilot valve water inlet, e-pilot valve osculum.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As the leading type water pressure overflow valve that figure is a kind of new structure, comprise main valve (A) and pilot valve (B).Described main valve (A) comprises main valve body (2), main valve housing (6), main valve plug (5), main spool spring (19); Between main valve plug (5) periphery and main valve housing (6), take Spielpassung, on main valve plug (5), there are two through holes, in small through hole (a), be main damping valve hole (20), main spool spring (19) is housed in large through-hole (b), in main valve plug (5) center hole, have radial direction through hole (c), on main valve body (2), have water intake (P) and backwater mouth (O);
Described pilot valve (B) comprises guide valve blocks (16), weakening pad (15), guide's valve seat (14), guide's spool (13), pressure adjusting spring (12) and spring seat (11), end cap (10); In guide's valve seat (14), have damping hole (18), upper end is guide's spool (13), lower end acts on weakening pad (15), Regulation spring (12) two ends are spacing by the step of spring seat (11) and the facies basialis pyramidis of guide's spool (13), on guide valve blocks, there are two through holes, through hole (d) is communicated with main spool spring chamber and pilot valve ante-chamber, and through hole (e) connects pilot valve spring chamber and backwater mouth (O).
Its working principle is as follows:
When leading type water pressure overflow valve is worked, current enter in main valve body (2) from water intake (P), the damping hole (20) passing through again on main valve plug (5) arrives main spool spring chamber (b) and pilot valve ante-chamber, then by the damping hole (18) in the middle of guide's valve seat (14), acts on (13) on pilot valve.When system pressure is greater than pressure adjusting spring (12) preset pressure, pilot valve mouth is opened, part current via through holes (e) and backwater mouth (O) reflow tank.Current produce Pressure Drop during by damping hole, and chamber, main valve left and right produces pressure difference, and when pressure difference is greater than the elastic force of main spool spring (19) and other resistances, main valve plug (5) moves to left, and main valve is opened, by unnecessary water from backwater mouth (O) recovery tank that overflows.
Main valve plug (5) forms two settable orifices of connecting between two-step throttle structure and main valve housing (6), and the pressure drop in main valve chamber is born by two settable orifices, thereby has improved cavitation resistive property and the quiet dynamic characteristic of relief valve; In addition, at main valve plug (5) center, have high-pressure induct hole (a), utilize high-pressure induct to affect main flow bundle, can effectively suppress cavitation erosion, reduce noise, reduce vibration.Formerly before pilot valve seat, set up weakening pad, can effectively reduce the noise and vibration of relief valve, in pilot valve ingress, set up damping hole (18), make to connect with main damping valve hole (20), not only can improve relief valve setting-pressure accuracy, and can avoid elongated damping hole easily to occur the problem of stopping up.
Claims (3)
1. a leading type water pressure overflow valve for new structure, comprises main valve (A) and pilot valve (B), it is characterized in that: described main valve (A) comprises main valve body (2), main valve housing (6), main valve plug (5), main spool spring (19); Between main valve plug (5) periphery and main valve housing (6), take Spielpassung, on main valve plug (5), there are two through holes, in small through hole (a), be main damping valve hole (20), main spool spring (19) is housed in large through-hole (b), in main valve plug (5) center hole, have radial direction through hole (c), on main valve body (2), have water intake (P) and backwater mouth (O);
Described pilot valve (B) comprises guide valve blocks (16), weakening pad (15), guide's valve seat (14), guide's spool (13), pressure adjusting spring (12) and spring seat (11), end cap (10); In guide's valve seat (14), have damping hole (18), upper end is guide's spool (13), lower end acts on weakening pad (15), Regulation spring (12) two ends are spacing by the step of spring seat (11) and the facies basialis pyramidis of guide's spool (13), on guide valve blocks, there are two through holes, through hole (d) is communicated with main spool spring chamber and pilot valve ante-chamber, and through hole (e) connects pilot valve spring chamber and backwater mouth (O).
2. a kind of leading type water pressure overflow valve of new structure according to claim 1, it is characterized in that: the second order throttle structure that main valve plug (5) cavitates, reduces vibration and noise for having effective inhibition, and have and can affect the high-pressure induct of main flow bundle hole (c) at main valve plug (5) center.
3. a kind of leading type water pressure overflow valve of new structure according to claim 1, it is characterized in that: the front weakening pad (15) of setting up of pilot valve seat (14) formerly, can effectively reduce the noise and vibration of relief valve, and in pilot valve ingress, set up damping hole (18), connect with main damping valve hole (20), can improve relief valve setting-pressure accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320547696.0U CN203441853U (en) | 2013-09-04 | 2013-09-04 | Pilot-operated type water pressure overflow valve of novel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320547696.0U CN203441853U (en) | 2013-09-04 | 2013-09-04 | Pilot-operated type water pressure overflow valve of novel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441853U true CN203441853U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320547696.0U Expired - Fee Related CN203441853U (en) | 2013-09-04 | 2013-09-04 | Pilot-operated type water pressure overflow valve of novel structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN203441853U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864137A (en) * | 2015-05-20 | 2015-08-26 | 安徽理工大学 | Pilot-operated type water pressure overflow valve |
| CN105443483A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Overflow valve |
| CN105570501A (en) * | 2016-02-02 | 2016-05-11 | 石特阀门股份有限公司 | Novel gas pressure stabilizing and unloading valve |
| CN110056689A (en) * | 2019-03-20 | 2019-07-26 | 合肥壹点通信息科技有限公司 | A kind of pilot operated compound relief valve |
| CN110966277A (en) * | 2018-09-30 | 2020-04-07 | 江苏凯亚环保科技有限公司 | Overflow valve |
| CN113719657A (en) * | 2021-08-30 | 2021-11-30 | 华中科技大学 | Pressure compensation type valve core assembly, direct-acting overflow valve and pilot operated overflow valve |
| CN114198547A (en) * | 2021-12-22 | 2022-03-18 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve |
-
2013
- 2013-09-04 CN CN201320547696.0U patent/CN203441853U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864137A (en) * | 2015-05-20 | 2015-08-26 | 安徽理工大学 | Pilot-operated type water pressure overflow valve |
| CN104864137B (en) * | 2015-05-20 | 2017-11-14 | 安徽理工大学 | Leading type water pressure overflow valve |
| CN105443483A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Overflow valve |
| CN105570501A (en) * | 2016-02-02 | 2016-05-11 | 石特阀门股份有限公司 | Novel gas pressure stabilizing and unloading valve |
| CN105570501B (en) * | 2016-02-02 | 2018-07-06 | 石特阀门股份有限公司 | A kind of new gas voltage stabilizing unloading valve |
| CN110966277A (en) * | 2018-09-30 | 2020-04-07 | 江苏凯亚环保科技有限公司 | Overflow valve |
| CN110056689A (en) * | 2019-03-20 | 2019-07-26 | 合肥壹点通信息科技有限公司 | A kind of pilot operated compound relief valve |
| CN113719657A (en) * | 2021-08-30 | 2021-11-30 | 华中科技大学 | Pressure compensation type valve core assembly, direct-acting overflow valve and pilot operated overflow valve |
| CN114198547A (en) * | 2021-12-22 | 2022-03-18 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve |
| CN114198547B (en) * | 2021-12-22 | 2023-10-17 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve |
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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: 20140219 Termination date: 20140904 |
|
| EXPY | Termination of patent right or utility model |