CN203880163U - Leak-free pressure reducing valve - Google Patents
Leak-free pressure reducing valve Download PDFInfo
- Publication number
- CN203880163U CN203880163U CN201420252728.9U CN201420252728U CN203880163U CN 203880163 U CN203880163 U CN 203880163U CN 201420252728 U CN201420252728 U CN 201420252728U CN 203880163 U CN203880163 U CN 203880163U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- spool
- chamber
- spring
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000010992 reflux Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 9
- 230000006837 decompression Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a leak-free pressure reducing valve which comprises a valve body, a valve bonnet, a valve element and an adjusting spring assembly. The adjusting spring assembly comprises a spring cavity, an adjusting spring and a spring seat, a valve cavity is arranged in the valve body, a liquid outlet is formed in a side wall of the valve cavity, a sealing seat is arranged at the upper end of the valve body, the upper end of the valve element is butted to the spring seat after penetrating the sealing seat, the valve bonnet is mounted at the lower end of the valve body, the lower end of the valve element extends into the valve bonnet so that an inner cavity of the valve bonnet is divided into a liquid inlet cavity and a backflow cavity, a liquid inlet is formed in a side wall of the liquid inlet cavity, a throttle channel is arranged on the valve element, the valve cavity can be communicated with the backflow cavity via the throttle channel, a throttle opening is formed in a position between the valve element and the lower end of the valve body, and the opening of the throttle opening is controlled under the effect of up-down movement of the valve element. The leak-free pressure reducing valve has the advantage that technical problems of complicated structure and high cost of a pressure reducing valve in the prior art can be solved.
Description
[technical field]
The utility model relates to a kind of reduction valve.
[background technique]
Decompression reduction valve is one of indispensable critical elements in industrial trade hydraulic system, existing two-way reduction valve and three-way pressure reducing valve adopt guiding valve form substantially, on decompression branch road, need in the situation of pressurize or load increasing, working hole pressure increases, cause pressure-reduction outlet to have draining to drain tap or pressure hydraulic fluid port, make the working oil path can not pressurize, must adopt the solenoid valve of accumulator or two-way stop to carry out pressurize, cause system architecture complicated, cost improves.
[model utility content]
Problem to be solved in the utility model is just to provide a kind of reduction valve, can prevent that working hole is to other hydraulic fluid port draining, and not need to increase other pressurizer, simplification system.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of without leaking reduction valve, comprise valve body, valve gap, spool and Regulation spring assembly, described Regulation spring assembly comprises spring chamber, Regulation spring and spring seat, in described valve body, be provided with valve pocket, described valve pocket sidewall is provided with liquid outlet, described valve body upper end is provided with sealing seat, described spool upper end offsets with spring seat through after sealing seat, described valve gap is installed on described valve body lower end, valve gap is stretched in described spool lower end, make valve gap inner chamber be divided into admission chamber and refluxing chamber, the sidewall of described admission chamber is provided with liquid entering hole, described spool is provided with the throttling passage that is communicated with valve pocket and refluxing chamber, between described spool and valve body lower end, form restriction, the aperture of the control orifice that moves up and down of described spool.
Further, described spool lower end is provided with radially outstanding boss, and described boss and valve body lower end form conical surface seal.
Further, described boss and/or described valve body lower end are provided with sealing cone.
Further, described spring chamber sidewall is provided with air hole.
Further, between described sealing seat inwall and spool upper end outer side wall, by the first seal ring, seal, between described sealing seat outer wall and valve body upper end inwall, by the second seal ring, seal.
Further, between described spool lower end outer side wall and valve gap intracavity sidewall, by the 3rd seal ring, seal.
The beneficial effects of the utility model:
Reduction valve of the present utility model, when the pressure of admission chamber increases, liquid outlet pressure also can increase thereupon, the refluxing chamber pressure of valve gap also increases thereupon, thereby on promotion spool, move, reduce the aperture of restriction, along with reducing gradually of restriction aperture, valve pocket internal pressure reduces thereupon, reduces liquid outlet pressure; Valve pocket internal pressure reduces the refluxing chamber pressure that causes valve gap also corresponding reducing, and spool moves down under Regulation spring effect, increases the aperture of restriction.Be applied in actual hydraulic pressure system, can set up valve pocket liquid outlet pressure by Regulation spring, thereby realize pressure-reducing function.
If during system works, liquid outlet pressure surpasses the pressure that Regulation spring is set, and valve pocket liquid outlet pressure is increased to allow and causes on spool, moving and making in the situation of restriction sealing, and the flow of liquid outlet is by locked, restriction sealing between valve pocket and admission chamber, can not produce any leakage.
These features of the present utility model and advantage will be below embodiment, accompanying drawing in detailed exposure.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of reduction valve in the utility model preferred embodiment;
Fig. 2 is A place partial enlarged drawing in Fig. 1.
[embodiment]
Accompanying drawing below in conjunction with the utility model embodiment is explained and illustrated the utility model embodiment's technological scheme, but following embodiment is only preferred embodiment of the present utility model, not all.Embodiment based in mode of execution, those skilled in the art are other embodiments that obtains under the prerequisite of not making creative work, all belong to protection domain of the present utility model.
With reference to Fig. 1,2, the utility model embodiment's reduction valve, comprises valve body 1, valve gap 5, spool 4 and Regulation spring assembly 2, and Regulation spring assembly 2 comprises spring chamber 22, Regulation spring 21 and spring seat 23.In valve body 1, be provided with valve pocket 10, valve pocket 10 sidewalls are provided with liquid outlet 11, and Regulation spring assembly 2 is arranged on valve body 1 upper end, and valve body 1 upper end is provided with sealing seat 3, sealing seat 3 is passed afterwards in spool 4 upper ends and spring seat 23 offsets, and the active force of Regulation spring 21 can act on spool 4 by spring seat 23.Between sealing seat 3 inwalls and spool 4 upper end outer side walls, by the first seal ring 31 sealings, between sealing seat 3 outer walls and valve body 1 upper end inwall, by the second seal ring 32 sealings, can effectively prevent that liquid outlet 11 working fluids from leaking in spring chamber 22.
Above-mentioned valve gap 5 is installed on valve body 1 lower end, spool 4 lower ends are stretched in valve gap 5, and valve gap 5 inner chambers are divided into admission chamber 50 and refluxing chamber 51, between spool 4 lower end outer side walls and valve gap 5 intracavity sidewalls, by the 3rd seal ring 53 sealings, prevent that admission chamber 50 hydrodynamic pressures from having influence on refluxing chamber 51 hydrodynamic pressures.The sidewall of admission chamber 50 arranges liquid entering hole 52, and spool 4 is provided with the throttling passage that is communicated with valve pocket and refluxing chamber 51, and this throttling passage comprises the throttle orifice 41 on spool 4 sidewalls and the fluid passage 42 axially arranging along spool 4.Spool 4 is positioned at the radially outstanding boss 40 of part setting of admission chamber 50, between boss 40 and valve body 1 lower end, forms restriction 6, the aperture of the control orifice 6 that moves up and down of spool 4.
Working fluid enters the admission chamber 50 of valve gap 5 by liquid entering hole 52, through restriction 6 expenditure and pressures, flow into valve pocket 10, liquid outlet 11 by valve pocket 10 sidewalls enters in working line, the working fluid that flows into valve pocket 10 also feeds back in the refluxing chamber 51 of valve gap 5 by throttling passage, on the actuatable valve core 4 of making a concerted effort of refluxing chamber 51 hydrodynamic pressures and Regulation spring 21 active forces, move or move down, thus the aperture of control orifice 6.
According to actual working condition, if liquid entering hole 52 pressure increase, valve pocket 10 and liquid outlet 11 pressure increase thereupon, the hydrodynamic pressure being fed back in valve gap 5 refluxing chambeies 51 by throttling passage also can increase, thereby promote to move on spool 4, along with moving on spool 4, restriction 6 apertures reduce gradually, valve pocket 10 and liquid outlet 11 pressure reduce thereupon, the hydrodynamic pressure feeding back in valve gap 5 refluxing chambeies 51 also can reduce, spool 4 moves down under Regulation spring 21 effects, increase the aperture of restriction 6, until the force value that liquid outlet 11 pressure are set with Regulation spring 21 equates, realize pressure-reducing function.Generally, rely on the adjusting of Regulation spring 21, system pressure fluctuation and the elastic force of Regulation spring 21 are balanced each other, make system pressure keep constant in certain margin of error.
If there is liquid outlet 11 pressure, surpass the pressure that Regulation spring 21 is set, be that valve pocket liquid outlet 11 pressure are increased to allow and cause moving on spool 4 and make in the situation of restriction 6 sealings, no longer include working fluid and enter valve pocket, the flow of liquid outlet 11 is by locked, restriction 6 sealings between valve pocket 10 and admission chamber 50, can not produce any leakage, thereby prevent that fluid is from liquid entering hole to other fluid output leakage, can reduce post-decompression pipeline leakage point, and do not need to increase other pressurizer, simplification system.
For improving sealing effect, boss 40 forms conical surface seal with valve body 1 lower end, as a side of boss 40 relative valve body 1 lower ends of the present embodiment arranges sealing cone 401, in other embodiments, can be also: a side of the relative boss of valve body lower end arranges sealing cone; Or a side of the relative valve body lower end of boss arranges the first sealing cone, a side of the relative boss of valve body lower end arranges the second sealing cone, between the first sealing cone and the second sealing cone, forms conical surface seal.The form that adopts conical surface seal, can reach better sealing effect, thereby when needs increase system pressure, realize reliable and stable pressurize.
Spring chamber 22 sidewalls of the present embodiment are provided with air hole 221, spring chamber 22 will be without taking over what pipeline, directly lead to atmosphere, when can make Regulation spring in compression and suppressing, can move freely, avoid in prior art in order to reduce the back pressure of spring chamber, pressure-relief valve spring chamber must take back fuel tank without resistance.
The utility model embodiment is mainly used in various pressure reducing circuits, particularly the decompression branch road in Clamping Circuit or need the pressure reducing circuit of pressurize.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this, is familiar with this those skilled in the art and should be understood that the utility model includes but not limited to accompanying drawing and the content of describing in embodiment above.Any modification that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (6)
1. a nothing is leaked reduction valve, it is characterized in that: comprise valve body, valve gap, spool and Regulation spring assembly, described Regulation spring assembly comprises spring chamber, Regulation spring and spring seat, in described valve body, be provided with valve pocket, described valve pocket sidewall is provided with liquid outlet, described valve body upper end is provided with sealing seat, described spool upper end offsets with spring seat through after sealing seat, described valve gap is installed on described valve body lower end, valve gap is stretched in described spool lower end, make valve gap inner chamber be divided into admission chamber and refluxing chamber, the sidewall of described admission chamber is provided with liquid entering hole, described spool is provided with the throttling passage that is communicated with valve pocket and refluxing chamber, between described spool and valve body lower end, form restriction, the aperture of the control orifice that moves up and down of described spool.
2. a kind of nothing as claimed in claim 1 is leaked reduction valve, it is characterized in that: described spool lower end is provided with radially outstanding boss, and described boss and valve body lower end form conical surface seal.
3. as claimed in claim 2 a kind of without leaking reduction valve, it is characterized in that: described boss and/or described valve body lower end are provided with sealing cone.
4. as claimed in claim 1 a kind of without leaking reduction valve, it is characterized in that: described spring chamber sidewall is provided with air hole.
5. a kind of nothing as described in claim 1 to 4 any one is leaked reduction valve, it is characterized in that: between described sealing seat inwall and spool upper end outer side wall, by the first seal ring, seal, between described sealing seat outer wall and valve body upper end inwall, by the second seal ring, seal.
6. a kind of nothing as described in claim 1 to 4 any one is leaked reduction valve, it is characterized in that: between described spool lower end outer side wall and valve gap intracavity sidewall, by the 3rd seal ring, seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252728.9U CN203880163U (en) | 2014-05-16 | 2014-05-16 | Leak-free pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252728.9U CN203880163U (en) | 2014-05-16 | 2014-05-16 | Leak-free pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880163U true CN203880163U (en) | 2014-10-15 |
Family
ID=51680659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420252728.9U Expired - Lifetime CN203880163U (en) | 2014-05-16 | 2014-05-16 | Leak-free pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203880163U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131347A (en) * | 2017-12-25 | 2018-06-08 | 宁波文泽机电技术开发有限公司 | No leakage three-way pressure reducing valve |
| CN108468670A (en) * | 2018-06-28 | 2018-08-31 | 浙江华益精密机械股份有限公司 | Pressure regulator valve |
| CN109404358A (en) * | 2018-11-22 | 2019-03-01 | 李军 | A kind of control valve |
| CN110051892A (en) * | 2019-05-05 | 2019-07-26 | 温州市人民医院 | A kind of full-automatic regulation flow velocity anti-return drainage of cerebrospinal fluid device |
-
2014
- 2014-05-16 CN CN201420252728.9U patent/CN203880163U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131347A (en) * | 2017-12-25 | 2018-06-08 | 宁波文泽机电技术开发有限公司 | No leakage three-way pressure reducing valve |
| CN108468670A (en) * | 2018-06-28 | 2018-08-31 | 浙江华益精密机械股份有限公司 | Pressure regulator valve |
| CN108468670B (en) * | 2018-06-28 | 2024-06-25 | 浙江三尚智迪科技有限公司 | Pressure regulating valve |
| CN109404358A (en) * | 2018-11-22 | 2019-03-01 | 李军 | A kind of control valve |
| CN109404358B (en) * | 2018-11-22 | 2019-12-06 | 苏州市相城区黄桥工业园经济发展有限公司 | Control valve |
| CN110051892A (en) * | 2019-05-05 | 2019-07-26 | 温州市人民医院 | A kind of full-automatic regulation flow velocity anti-return drainage of cerebrospinal fluid device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG HUAYI PRECISION MACHINERY CO., LTD. Free format text: FORMER NAME: ZHEJIANG HUAYI MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311835, Shaoxing Town, Zhuji, Zhejiang, Jiefang Road No. 689 Patentee after: ZHEJIANG HUAYI PRECISION MACHINERY Co.,Ltd. Address before: 311835, Shaoxing Town, Zhuji, Zhejiang, Jiefang Road No. 689 Patentee before: ZHEJIANG HUAYI MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Huayi Precision Machinery Co.,Ltd. Address before: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG HUAYI PRECISION MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |
|
| CX01 | Expiry of patent term |