CN206816579U - A kind of multistage overflow valve - Google Patents
A kind of multistage overflow valve Download PDFInfo
- Publication number
- CN206816579U CN206816579U CN201720654422.XU CN201720654422U CN206816579U CN 206816579 U CN206816579 U CN 206816579U CN 201720654422 U CN201720654422 U CN 201720654422U CN 206816579 U CN206816579 U CN 206816579U
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- piston
- valve
- spring
- installation cavity
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Abstract
It the utility model is related to overflow valve,It is specifically related to a kind of multistage overflow valve,Including valve body,First piston,First spring,Valve blocks up,Seal plug,Ring pads,Second spring,Second piston and the 3rd spring,The valve body upper end is provided with valve pocket,External control through hole is provided with the left of the valve pocket,The external control through hole lower end is provided with first through hole,The first through hole lower end is provided with ring pads installation cavity,The ring pads installation cavity lower end is provided with piston installation cavity,The piston installation cavity lower end is provided with inlet,The second through hole and third through-hole are provided with side by side on the right side of the piston installation cavity,Fluid hole is provided with the right side of second through hole and third through-hole,Connected between the fluid hole and valve pocket by fourth hole,The valve pocket left end is provided with first piston,The first spring is provided with the left of the first piston,The first spring left end is provided with valve and blocked up,Valve is blocked up and held out against on external control through hole by first spring.The utility model is scientific and reasonable for structure, and using effect is good, practical.
Description
Technical field
Overflow valve is the utility model is related to, is specifically related to a kind of multistage overflow valve.
Background technology
Overflow valve is a kind of hydraulic pressure control valve, mainly plays level pressure overflow, voltage stabilizing in hydraulic test, system is unloaded
Lotus and safeguard protection effect, existing overflow valve typically all use pilot operated compound relief valve, pilot operated compound relief valve be divided into pilot valve mouth with
Primary valve, the change of pilot valve mouth and primary valve oil flow and pressure are very big, it is easy to cavitation occur, produce make an uproar therefrom
Sound and vibration, primary valve can be thrown open under a large pressure, the process of neither one transition, so occurred hole when in use and showed
As serious, noise and vibration are big, therefore, a kind of it is proposed that multistage overflow valve.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of multistage overflow valve, solves leading for existing overflow valve
Pressure difference excessive the problem of cavitation, noise and big vibration occurs when valve port and primary valve are opened.
In order to solve the above technical problems, the utility model provides following technical scheme：A kind of multistage overflow valve, including valve
Body, first piston, the first spring, valve are stifled, seal plug, ring pads, second spring, second piston and the 3rd spring, on the valve body
End is provided with valve pocket, is provided with external control through hole on the left of the valve pocket, the external control through hole lower end is provided with first through hole, the first through hole
Lower end is provided with ring pads installation cavity, and the ring pads installation cavity lower end is provided with piston installation cavity, the piston installation cavity lower end be provided with into
Liquid mouth, the piston installation cavity right side are provided with the second through hole and third through-hole, the second through hole and the third through-hole right side side by side
Provided with fluid hole, connected between the fluid hole and valve pocket by fourth hole, the valve pocket left end is provided with first piston, described
The first spring is provided with the left of first piston, the first spring left end is provided with valve and blocked up, and valve is blocked up and held out against by first spring
On external control through hole, the external control through hole left end is set by being threaded with seal plug, the seal plug with valve seal, the ring
Pad installation cavity bottom is provided with ring pads, and second spring is provided with above the ring pads, and the second spring lower end is held out against in ring pads,
Upper end holds out against ring pads installation cavity upper wall, and second piston, the center of the second piston are movably installed with the piston installation cavity
3rd spring is installed, the 3rd lower spring end holds out against second piston, and upper end holds out against ring pads installation cavity upper wall in groove.
On the basis of such scheme, the first piston is slidably matched with valve pocket, is fixedly connected on the right side of the first piston
There is regulation screw mandrel, the regulation screw mandrel runs through valve cavity wall, and knob is fixedly connected with external end head.
On the basis of such scheme, it is taper that the valve, which blocks up left end, and the conical surface of the taper is held out against on external control through hole.
On the basis of such scheme, the ring pads are slidably matched with ring pads installation cavity.
On the basis of such scheme, the second piston is slidably matched with piston installation cavity, in the second piston lower end
The heart is provided with liquid-through hole, and the second piston lower end is taper, and the conical surface of the taper is held out against on inlet.
On the basis of such scheme, the elastic force of the second spring is more than the elastic force of the 3rd spring.
The utility model has an advantageous effect in that compared with prior art：A kind of multistage overflow valve, using new structure,
It is on the primary valve of overflow valve to add one of valve port more, pressure can be allowed progressively to be released, rather than release suddenly, avoid
There is cavitation, be greatly reduced noise and vibration, the utility model is scientific and reasonable for structure, using effect is good, practical
Property is strong.
Brief description of the drawings
Fig. 1 is a kind of multistage overflow valve structural representation of the utility model；
Fig. 2 is a kind of valve body structure schematic diagram of multistage overflow valve of the utility model；
Fig. 3 is a kind of ring pads structural representation of multistage overflow valve of the utility model；
Fig. 4 is a kind of multistage overflow valve of the utility model progressively Unclosing structure schematic diagram；
Fig. 5 is a kind of complete Unclosing structure schematic diagram of multistage overflow valve of the utility model.
In figure marked as：1- valve bodies, 101- valve pockets, 102- external controls through hole, 103- first through hole, 104- ring pads installation cavity,
105- pistons installation cavity, 106- inlets, the through holes of 107- second, 108- third through-holes, 109- fluid holes, 110- fourth holes,
2- first pistons, 201- regulations screw mandrel, the springs of 3- first, 4- valves are stifled, 5- seal plugs, 6- ring pads, 7- second springs, 8- second live
Plug, 801- liquid-through holes, the springs of 9- the 3rd.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
In description of the present utility model, it is to be understood that term " longitudinal direction ", " transverse direction ", " on ", " under ", " preceding ",
The orientation or position relationship of the instruction such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on
Orientation shown in the drawings or position relationship, it is for only for ease of description the utility model, rather than instruction or the dress for implying meaning
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model
Limitation.
Understood referring to figs. 1 to Fig. 5:A kind of multistage overflow valve, including valve body 1, first piston 2, the first spring 3, valve it is stifled 4,
Seal plug 5, ring pads 6, second spring 7, the spring 9 of second piston 8 and the 3rd, the upper end of valve body 1 are provided with valve pocket 101, the valve
The left side of chamber 101 is provided with external control through hole 102, and the lower end of external control through hole 102 is provided with first through hole 103, under the first through hole 103
End is provided with ring pads installation cavity 104, and the lower end of ring pads installation cavity 104 is provided with piston installation cavity 105, the piston installation cavity 105
Lower end is provided with inlet 106, and the right side of piston installation cavity 105 is provided with the second through hole 107 and third through-hole 108 side by side, described
Second through hole 107 and the right side of third through-hole 108 are provided with fluid hole 109, by four-way between the fluid hole 109 and valve pocket 101
Hole 110 connects, and the left end of valve pocket 101 is provided with first piston 2, and the left side of first piston 2 is provided with the first spring 3, described
The left end of first spring 3 is provided with valve stifled 4, and valve is blocked up 4 and held out against on external control through hole 102 by first spring 3, the external control through hole
102 left ends are by being threaded with seal plug 5, the seal plug 5 and the sealed set of valve body 1, the bottom of ring pads installation cavity 104 peace
Equipped with ring pads 6, the top of ring pads 6 is provided with second spring 7, and the lower end of second spring 7 is held out against in ring pads 6, and upper end is held out against
The upper wall of ring pads installation cavity 104, second piston 8, the center of the second piston 8 are movably installed with the piston installation cavity 105
3rd spring 9 is installed, the lower end of the 3rd spring 9 holds out against second piston 8, and upper end is held out against on ring pads installation cavity 104 in groove
Wall.
The first piston 2 is slidably matched with valve pocket 101, facilitates first piston 2 to be moved in valve pocket 101, and described first
The right side of piston 2 is fixedly connected with regulation screw mandrel 201, and the regulation screw mandrel 201 runs through the wall of valve pocket 101, and fixed on external end head
Knob is connected with, conveniently turns regulation screw mandrel 201, it is taper that the valve, which blocks up 4 left ends, and the conical surface of the taper is held out against to be led in external control
On hole 102, seal isolation can be played a part of, the ring pads 6 are slidably matched with ring pads installation cavity 104, facilitate ring pads 6 in ring
Moved in pad installation cavity 104, the second piston 8 is slidably matched with piston installation cavity 105, facilitates second piston 8 to pacify in piston
It behave affectedly in 105 and moves, the lower end center of second piston 8 is provided with liquid-through hole 801, facilitates liquid to enter, under the second piston 8
Hold and held out against for taper, the conical surface of the taper on inlet 106, seal isolation can be played a part of, the second spring 7
Elastic force is more than the elastic force of the 3rd spring 9, is easy to fluid pressure progressively to discharge.
Principle and advantage of the present utility model：Before being different from, the structure of former overflow valve is changed, in primary valve
On add one of valve port, pressure can be allowed progressively to discharge, in use, liquid is first from liquid-through hole 109 through the
Two pistons 8, into ring pads installation cavity 104, external control through hole 102 is being entered by first through hole 103, valve is being blocked up into 4 jack-up, into valve
Chamber 101, fluid hole 109 is being entered by fourth hole 110, as the pressure increases, second piston 8 is begun to move up, and
Compressing the 3rd spring 9, in the moving process of second piston 8, top can hold out against ring pads 6, be stopped by ring pads 6, stop moving up, and now
Two through holes 107 are opened, and liquid flows into fluid hole 109 from the second through hole 107, when fluid pressure continues increase, the meeting of second piston 8
Ring pads 6 are promoted, compress second spring 7, second piston 8 continues to move up, until opening third through-hole 108, in whole process, liquid
Pressure be progressively released, liquid also progressively flows into fluid hole 109, rather than pours in fluid hole 109 suddenly, will not cause sky
Cave phenomenon, but also noise and vibration can be reduced, the utility model is scientific and reasonable for structure, and using effect is good, is adapted to promote the use of.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of multistage overflow valve, including valve body (1), first piston (2), the first spring (3), valve block up (4), seal plug (5), ring
Pad (6), second spring (7), second piston (8) and the 3rd spring (9), it is characterised in that：Valve body (1) upper end is provided with valve pocket
(101) external control through hole (102), is provided with the left of the valve pocket (101), external control through hole (102) lower end is provided with first through hole
(103), first through hole (103) lower end is provided with ring pads installation cavity (104), and ring pads installation cavity (104) lower end, which is provided with, lives
Installation cavity (105) is filled in, piston installation cavity (105) lower end is provided with inlet (106), piston installation cavity (105) right side
The second through hole (107) and third through-hole (108) are provided with side by side, are provided with the right side of second through hole (107) and third through-hole (108)
Fluid hole (109), connected between the fluid hole (109) and valve pocket (101) by fourth hole (110), the valve pocket (101) is left
End is provided with first piston (2), and the first spring (3), the first spring (3) left end peace are provided with the left of the first piston (2)
(4) are blocked up equipped with valve, valve is blocked up (4) and held out against on external control through hole (102) by first spring (3), and the external control through hole (102) is left
End is by being threaded with seal plug (5), the seal plug (5) and valve body (1) sealed set, ring pads installation cavity (104) bottom
End is provided with ring pads (6), is provided with second spring (7) above the ring pads (6), second spring (7) lower end is held out against in ring pads
(6) on, upper end holds out against ring pads installation cavity (104) upper wall, and second piston (8) is movably installed with the piston installation cavity (105),
3rd spring (9) is installed, the 3rd spring (9) lower end holds out against second piston in the central recess of the second piston (8)
(8), upper end holds out against ring pads installation cavity (104) upper wall.
2. a kind of multistage overflow valve according to claim 1, it is characterised in that the first piston (2) and valve pocket (101)
It is slidably matched, regulation screw mandrel (201) is fixedly connected with the right side of the first piston (2), the regulation screw mandrel (201) runs through valve pocket
(101) wall, and knob is fixedly connected with external end head.
3. a kind of multistage overflow valve according to claim 1, it is characterised in that it is taper that the valve, which blocks up (4) left end, described
The conical surface of taper is held out against on external control through hole (102).
4. a kind of multistage overflow valve according to claim 1, it is characterised in that the ring pads (6) and ring pads installation cavity
(104) it is slidably matched.
5. a kind of multistage overflow valve according to claim 1, it is characterised in that the second piston (8) is installed with piston
Chamber (105) is slidably matched, and second piston (8) the lower end center is provided with liquid-through hole (801), and second piston (8) lower end is
Taper, the conical surface of the taper are held out against on inlet (106).
6. a kind of multistage overflow valve according to claim 1, it is characterised in that the elastic force of the second spring (7) is more than
The elastic force of 3rd spring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720654422.XU CN206816579U (en) | 2017-06-07 | 2017-06-07 | A kind of multistage overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720654422.XU CN206816579U (en) | 2017-06-07 | 2017-06-07 | A kind of multistage overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206816579U true CN206816579U (en) | 2017-12-29 |
Family
ID=60758660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720654422.XU Expired - Fee Related CN206816579U (en) | 2017-06-07 | 2017-06-07 | A kind of multistage overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206816579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417861A (en) * | 2021-06-23 | 2021-09-21 | 蒋晓红 | Water pump with self-adaptation pressure release mechanism |
-
2017
- 2017-06-07 CN CN201720654422.XU patent/CN206816579U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417861A (en) * | 2021-06-23 | 2021-09-21 | 蒋晓红 | Water pump with self-adaptation pressure release mechanism |
| CN113417861B (en) * | 2021-06-23 | 2024-01-02 | 蒋晓红 | Water pump with self-adaptive pressure relief mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180622 Address after: 325000 19-1 buildings of Lanshan yuan, Wan Ji Ou County, Qingtian County, Lishui, Zhejiang Patentee after: Nuclear safety nuclear power equipment Technology Co., Ltd. Address before: 325000 No. 33 Hecheng Middle Road, Hezhen Town, Qingtian, Lishui, Zhejiang Patentee before: Fan Jingdong |
|
| 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: 20171229 Termination date: 20210607 |