CN202402383U - Stacked pressure relief valve - Google Patents
Stacked pressure relief valve Download PDFInfo
- Publication number
- CN202402383U CN202402383U CN 201120552985 CN201120552985U CN202402383U CN 202402383 U CN202402383 U CN 202402383U CN 201120552985 CN201120552985 CN 201120552985 CN 201120552985 U CN201120552985 U CN 201120552985U CN 202402383 U CN202402383 U CN 202402383U
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- Prior art keywords
- valve
- valve body
- passageway
- runner
- spring
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- Expired - Fee Related
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Abstract
The utility model provides a stacked pressure relief valve which comprises a valve body and an adjustor connected with the valve body. The stacked pressure relief valve is characterized in that the valve body is internally provided with a main hole which is provided with a valve element. One end of the valve element is connected with a small valve element and the other end of the small valve element is provided with a thread protective sleeve. The other end of the valve element is connected with a spring base arranged inside the adjustor. The adjustor is internally provided with a spring and a spring cover is arranged on the spring base. The valve body is provided with casting passageways A, B, TA and TB, wherein the passageway B is not connected with the main hole. By using the thread protective sleeve, the stacked pressure relief valve is connected with a pressure gauge or a seal plug on the rear side to change the position of a check valve on the valve body, so that the check valve does not pass through an installation hole any longer so as to simplify the installation. And the edge of a sealing ring is not easy to cut so as to facilitate installation and maintenance. The passageway B is not connected with the main hole so as to avoid the situation that the passageway B cannot maintain pressure due to the leakage caused by clearance gap seal between the passageway B and the passageway A in the pressure maintaining process of the passageway B.
Description
Technical field
The utility model relates to the hydraulic control system technical field, the stacked compression release valve that concrete relating to used in the hydraulic system.
Background technique
As shown in Figure 1, the reduction valve in the existing product, runner B is connected with main aperture, when runner B does pressurize and runner A because of the leakage that clearance seal causes, cause the runner B can't pressurize.
The model utility content
The utility model technical problem to be solved is, overcomes the problem that exists in the existing technology, and a kind of stacked compression release valve is provided.
For the technological scheme that addresses the above problem the utility model is such:
Stacked compression release valve comprises valve body, and the controlling device that is connected with valve body is provided with main aperture in the valve body, be provided with spool in the main aperture, and spool one end connects a small valve core, and the small valve core the other end is provided with swivel nut; The other end of spool connects the spring seat in the controlling device, is provided with spring in the controlling device, and spring housing is on spring seat; Said valve body is provided with casting runner A, B, TA, TB, and wherein runner B is not connected with main aperture.
Be provided with damper in the said valve body, damper connects between the hydraulic fluid port A ' be arranged on main aperture and runner A locates.
Be connected to screw plug on the swivel nut of valve body one end.
Be connected to pressure gauge on the swivel nut of valve body one end.
Valve body one side is provided with unidirectional mounting hole, on the unidirectional mounting hole one-way valve is installed.
Beneficial effect, the utility model uses swivel nut, can connect pressure gauge at the back at it; Can be used for monitoring secondary pressure; Can reduce pressure taps, reduced outer seepage link, and pressure taps be in the valve body central position; And M14 * 1.5 screw threads for commonly used help improving total quality, conveniently use and reduce cost; Change the position of one-way valve on valve body, make it, simplify installation and seal ring and be not easy to cut edge, the convenient installation and maintenance no longer through mounting hole; Runner B is not connected with main aperture, when having avoided runner B to do pressurize and runner A because of the leakage that clearance seal causes, cause the runner B can't pressurize; Signal oil is got through the valve body upper runner, has therefore simplified the processing of spool, and has increased the degree of depth of spool circular groove, has increased area of passage the through-current capability of valve is increased; TB links up up and down in the hole, uses TA or TB hole on the selector valve piece arbitrarily like top stack selector valve, and selector valve then must use TA and TB hole on the valve piece as not superposeing.The problem that no longer can't draining causes the valve cisco unity malfunction because of the TB hole.
Description of drawings
Specify the utility model below in conjunction with accompanying drawing and embodiment;
The existing stacked compression release valve structural representation of Fig. 1.
Fig. 2 is the described stacked compression release valve structural representation of the utility model.
Fig. 3 overlooks the direction schematic representation for the described stacked compression release valve of the utility model.
Fig. 4 is the G-G direction structure schematic representation of Fig. 3.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 2-Fig. 4, in valve body 11, cast out runner P, TA, TB, A, B, valve body one end dress swivel nut 3 is done sealing with seal ring 4.Swivel nut 3 one ends dresses screw plug 1 also seals with seal ring 2, can connect pressure gauge and does pressure measurement as not adorning 1 of screw plug.This position can be reduced auxiliary hole and specially done pressure taps, and the position moves to the center portion of easy disassembly.
In valve body 11 main apertures spool 9 is housed, spool 9 one ends head on small valve core 8, the other end then with spring seat 12 on sphere contact, have controlling device 14 to fix and Regulation spring 13 at last.Dress damper 5 is used for getting signal oil in the valve body 11, and the degree of depth of therefore comparing the circular groove of spool with existing product increases, and has increased area of passage the through-current capability of valve is increased.
Runner B and hydraulic fluid port B ' do not link up with any runner in the valve body 11, the independent existence, therefore when runner B is sealed in the pressure dwelling loop, can not influence the pressurize of B runner because of clearance seal causes internal leakage.Runner A and hydraulic fluid port A ' stagger in sprue, and the displacement through spool 9 realizes break-make and control openings of sizes.
TA runner and spring chamber 15 are linked up on the valve body 11, guarantee that spring chamber 15 can release.
Explain with shown in Figure 1.In static position, this valve is often opened, and fluid can freely flow to hydraulic fluid port A ' from A.Hydraulic fluid port A ' pressure acts on the small valve core area on pressure spring opposite through control oil channel 5 simultaneously.When hydraulic fluid port A ' pressure surpassed spring 13 setting values, small valve core 8 promoted spool 9 and moves to the control position, and it is stable that the pressure of hydraulic fluid port A ' keeps.Signal provides from hydraulic fluid port A ' inside through damper 5 with control oil.If the pressure of hydraulic fluid port A ' continues to raise owing to external force acts on final controlling element, spool 9 just continues to move to pressure spring 13 directions.The spool land 9 of hydraulic fluid port A ' on spool 9 is communicated with fuel tank like this.Excessive fluid flows back to fuel tank, further raises to prevent pressure.Spring chamber 13 be communicated with hydraulic fluid port TA by the outside rush down oil to fuel tank.Swivel nut 3 backs also can connect the secondary pressure monitoring that pressure gauge is used for valve with screw plug 1 sealing.21 places are unidirectional mounting hole (selecting just having of one-way valve for use), and this unidirectional oil that makes only flows from A ' toward the A hydraulic fluid port, even fluid can reverse flow.
More than show and described the advantage of basic principle, major character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. stacked compression release valve comprises valve body, and the controlling device that is connected with valve body is characterized in that, is provided with main aperture in the valve body, is provided with spool in the main aperture, and spool one end connects a small valve core, and the small valve core the other end is provided with swivel nut; The other end of spool connects the spring seat in the controlling device, is provided with spring in the controlling device, and spring housing is on spring seat; Said valve body is provided with casting runner (A, B, TA, TB), and wherein runner B is not connected with main aperture.
2. stacked compression release valve according to claim 1 is characterized in that, is provided with damper in the said valve body, and damper connects between the hydraulic fluid port (A ') be arranged on main aperture and runner (A) locates.
3. stacked compression release valve according to claim 1 is characterized in that, is connected to screw plug on the swivel nut of valve body one end.
4. stacked compression release valve according to claim 1 is characterized in that, is connected to pressure gauge on the swivel nut of valve body one end.
5. stacked compression release valve according to claim 1 is characterized in that, valve body one side is provided with unidirectional mounting hole, on the unidirectional mounting hole one-way valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552985 CN202402383U (en) | 2011-12-26 | 2011-12-26 | Stacked pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552985 CN202402383U (en) | 2011-12-26 | 2011-12-26 | Stacked pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402383U true CN202402383U (en) | 2012-08-29 |
Family
ID=46700033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120552985 Expired - Fee Related CN202402383U (en) | 2011-12-26 | 2011-12-26 | Stacked pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402383U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174694A (en) * | 2011-12-26 | 2013-06-26 | 上海立新液压有限公司 | Overlying type pressure-reducing valve |
| CN110332166A (en) * | 2019-07-09 | 2019-10-15 | 南通翔骜液压润滑设备有限公司 | Stacked compression release valve |
-
2011
- 2011-12-26 CN CN 201120552985 patent/CN202402383U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174694A (en) * | 2011-12-26 | 2013-06-26 | 上海立新液压有限公司 | Overlying type pressure-reducing valve |
| CN110332166A (en) * | 2019-07-09 | 2019-10-15 | 南通翔骜液压润滑设备有限公司 | Stacked compression release valve |
| CN110332166B (en) * | 2019-07-09 | 2021-02-09 | 南通翔骜液压润滑设备有限公司 | Stacked pressure reducing 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20161226 |