CN207421439U - A kind of rotary shaft pressure maintaining valve - Google Patents
A kind of rotary shaft pressure maintaining valve Download PDFInfo
- Publication number
- CN207421439U CN207421439U CN201721302519.0U CN201721302519U CN207421439U CN 207421439 U CN207421439 U CN 207421439U CN 201721302519 U CN201721302519 U CN 201721302519U CN 207421439 U CN207421439 U CN 207421439U
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- China
- Prior art keywords
- spool
- valve body
- rotary shaft
- pressure
- pushing block
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Abstract
The utility model discloses a kind of rotary shaft pressure maintaining valves, and including spool and valve body, the valve body is rotatablely equipped with spool, are slidably fitted with pushing block, are connected between the pushing block and spool by rack and pinion；Elastic element is additionally provided between the pushing block and valve body, the pressure release passage and relief hole of mutual cooperation are provided on valve body and spool, when pressure is larger, pushing block promotes valve core rotation, and relief hole is made to partially overlap with pressure release passage or all overlap, realizes pressure release；When pressure reduces, valve core reset is driven by elastic element, pressure release passage is cut off, avoids hypotony；The utility model has many advantages, such as that governing speed is fast, it is good to adjust accurate and voltage regulation result, suitable for all kinds of pressure pipeline systems.
Description
Technical field
The utility model is related to valve technology fields, and in particular to a kind of rotary shaft pressure maintaining valve.
Background technology
Pressure maintaining valve is known as decompression venting valve again, be by application valve body inside the aperture of opening and closing element adjust medium
Flow achievees the purpose that reduce pressure medium, while the aperture of the effect adjusting opening and closing element by downstream pressure, makes downstream pressure
It is maintained in certain scope, it is continually changing in inlet pressure, outlet pressure is kept in the range of setting, so as to
Remaining production equipment is protected, and then ensures being smoothed out for production.
The Chinese utility model patent of Publication No. CN202597826U disclosed a kind of shaft on December 12nd, 2012
Formula pressure maintaining valve, including valve body, valve deck, spool, valve deck and valve body are screwed, it is characterised in that：There is adjusting nut on valve deck,
Adjusting nut carries spring, and for the spring other end in fixed seat, fixed seat is nested with anchor tip, is sequentially connected a diaphragm and one
Banking stop, spool top screw in anchor tip, lower part be packed into valve body valve body mesoporous in, and by valve body be divided into intake chamber,
There are T-shaped through hole in surge-chamber, water-supplying chamber in spool, wherein two side through hole are individually directed intake chamber and water-supplying chamber, opposite side is oriented to
Surge-chamber.The utility model is simple in structure, and voluntarily the pressure of water system can be adjusted, so that stable water pressure, together
When also extend the service life of instrument.
The content of the invention
Poor for pressure maintaining valve voltage regulation result in the prior art, pressure medium fluctuates the defects of big, the utility model
A kind of rotary shaft pressure maintaining valve is disclosed, the stability of system pressure can be effectively improved using the utility model, reduces pressure wave
Dynamic amplitude improves the work efficiency and reliability of system.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of rotary shaft pressure maintaining valve, including valve body and spool, it is characterised in that：The valve core rotation is installed in valve body,
Pressure release passage is additionally provided on the valve body, the relief hole being adapted with pressure release passage is provided on spool, the spool passes through
Rotate the closure degree of control pressure release passage；Control chamber is additionally provided on the valve body, is slidably fitted with and pushes away in the control chamber
Block, the pushing block are connected by rack and pinion with spool；Elastic element is additionally provided in the control chamber.
One end of the control chamber is provided with plug, is provided on the adjusting plug and is initially pressed for regulation elasticity element
The adjusting rod of power.
Rolling bearing is provided between the spool and valve body.
Linear motion bearing is provided between the pushing block and control chamber.
The both ends of the relief hole are both provided with guide ring.
Limiting slot is additionally provided in the control chamber, the limited block being adapted with limiting slot is provided on the pushing block.
The elastic element is butterfly spring.
Pressure sensor is provided on the adjusting rod, is provided on valve body and display screen.
Compared with prior art, the utility model has the advantages that：
1st, rotated on the valve body being provided on the valve body of the utility model and be provided with spool, be slidably fitted on the valve body
Pushing block is connected between the pushing block and spool by rack and pinion, and pressure release passage is respectively arranged on the valve body and spool
And relief hole, when pressure is more than the upper limit value of pressure maintaining valve, pushing block slides, and is driven during its slip by rack and pinion
Spool rotating makes pressure release passage and relief hole partly or entirely overlap, and realizes decompression function；And during pressure becomes smaller,
Sliding block restores under the action of the original paper of elasticity, reduces the size of the coincidence part of relief hole and pressure release passage；Its reliable operation is adjusted
Section is rapid, while its control accuracy is high, improves the stability of pressure.
2nd, one end of the control chamber of the utility model is provided with plug, is provided with adjusting rod on plug, is made by adjusting rod
User can apply an initial pressure to elastic element, and so as to adjust the operating valve value of pressure maintaining valve, adjusting is more accurate, together
When pressure maintaining valve is made to disclosure satisfy that different use demands, expand the scope of application of pressure maintaining valve.
3rd, rolling bearing is provided between the spool and valve body of the utility model, straight line is provided between pushing block and control chamber
On the one hand motion bearings reduce the obstruction that frictional force moves spool and pushing block, another so as to improve the accuracy of adjusting control
Aspect improves the process of spool and pushing block movement, avoids the occurrence of mechanical clamping stagnation, ensures the smooth reality of pressure maintaining valve mechanical action
It is existing.
4th, the both ends of the relief hole of the utility model are both provided with guide ring, and high-pressure fluid is avoided to be collided with spool to spool
Movement generate obstruction, improve the accuracy of control.
5th, limiting slot is provided in the control chamber of the utility model, limited block is provided on pushing block, limits the activity of pushing block
Scope avoids each mechanical part from disengaging；The rotation angle of spool is limited simultaneously, avoids the occurrence of the anglec of rotation more than 180 degree
Degree improves the accuracy of control.
6th, the elastic element of the utility model is butterfly spring, the stability of elastic element is improved, so as to improve spool
The stability of movement avoids pressure from bounce on a large scale occur, improves the voltage regulation result of pressure maintaining valve.
7th, pressure sensor is provided on the adjusting rod of the utility model, is convenient for measuring the initial pressure of adjusting rod, so as to
Improve the accuracy of adjusting control.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model drive mechanism figure；
Reference numeral：1st, valve body, 2, spool, 3, pressure release passage, 4, relief hole, 5, control chamber, 6, pushing block, 7, rack, 8,
Gear, 9, elastic element, the 10, first plug, 11, adjusting rod, 12, rolling bearing, 13, linear motion bearing, 14, guide ring,
15th, limiting slot, 16, limited block, 17, pressure sensor, 18, display screen, 19, valve core chamber, 20, baffle, the 21, second plug
Specific embodiment
It below will the utility model is described in further detail by specific embodiment;
Embodiment 1
Most preferred embodiment of the present embodiment as the utility model, it discloses a kind of rotary shaft pressure maintaining valve, concrete structures
As shown in Figure 1, including valve body 1 and spool 2, control chamber 5 is vertically arranged on the valve body 1, is horizontally disposed with and is useful on valve body 1
The valve core chamber 19 of spool 2 is accommodated, the pushing block 6 is slidably mounted on by linear motion bearing in control chamber 5, and the spool 2 is logical
It crosses rolling bearing 12 to be rotatablely installed in valve core chamber 19, valve core chamber is sealed by the second plug 21；It is also vertically arranged on the valve body 1
There is pressure release passage 3, the pressure release passage 3 is connected with valve core chamber 19, and relief hole 4 is provided on the spool 2, and the spool 2 exists
Relief hole 4 and the size of the intersection of pressure release passage 3 are controlled during rotation, so as to fulfill the keying to pressure release passage 3
The accurate control of degree；Rack 7 is provided on the pushing block 6, one end of spool 2 is provided with the gear 8 being meshed with rack 7,
It is provided with the first plug 10 in the control chamber 5, adjusting rod 11, described 11 one end of adjusting rod is equipped with by screw thread on plug 10
It wears the first plug 10 excessively to be inserted into control chamber 5, one end that the adjusting rod 11 is inserted into control chamber 5 is provided with baffle 20, described
Against having elastic component 9 between baffle 20 and pushing block 6, pressure sensor 17 is additionally provided on the baffle 20, on the valve body 1
It is provided with the display screen 18 being connected with pressure sensor 17.
The both ends of the relief hole 4 are both provided with guide ring 14.
Limiting slot 15 is additionally provided in the control chamber 5, the /V being adapted with limiting slot 15 is provided on the pushing block 6
Block 16.
The elastic element 9 is butterfly spring.
The operation principle of the utility model：When the pressure of fluid is more than the threshold values of setting, under the promotion of fluid, pushing block
It moves upwards, compresses butterfly spring, and Spool rotating is driven by rack and pinion, spool is during rotation, positioned at valve
Relief hole on core partially overlaps with pressure release passage, keeps unimpeded pressure release passage；Decompression function is smoothly realized, when the pressure of fluid
When power reduces, pushing block is subject to the thrust of fluid to reduce, and pushing block moves downward under the action of butterfly spring elastic force at this time, and diminution is let out
Hole and the size of pressure release passage intersection are pressed, until completely closing；The utility model can be according to the pressure size spirit of fluid
The size of the living intersection for adjusting relief hole and pressure release passage, it is excellent to have that control is accurate, be swift in response, voltage regulation result is good etc.
Point.
Claims (8)
1. a kind of rotary shaft pressure maintaining valve, including valve body（1）And spool（2）, it is characterised in that：The spool（2）Be rotatablely installed in
Valve body（1）It is interior, the valve body（1）On be additionally provided with pressure release passage（3）, spool（2）On be provided with and pressure release passage（3）It is adapted
Relief hole（4）, the spool（2）Pressure release passage is controlled by rotating（3）Closure degree；The valve body（1）On also set up
There is control chamber（5）, the control chamber（5）Inside it is slidably fitted with pushing block（6）, the pushing block（6）Pass through rack（7）And gear（8）
With spool（2）It is connected；The control chamber（5）Inside it is additionally provided with elastic element（9）.
2. a kind of rotary shaft pressure maintaining valve according to claim 1, it is characterised in that：The control chamber（5）One end set
There is the first plug（10）, first plug（10）On be provided with for regulation elasticity element（9）The adjusting rod of initial pressure
（11）.
3. a kind of rotary shaft pressure maintaining valve according to claim 1, it is characterised in that：The spool（2）With valve body（1）Between
It is provided with rolling bearing（12）.
4. a kind of rotary shaft pressure maintaining valve according to claim 1, it is characterised in that：The pushing block（6）With control chamber（5）It
Between be provided with linear motion bearing（13）.
5. a kind of rotary shaft pressure maintaining valve according to claim 1, it is characterised in that：The relief hole（4）Both ends be all provided with
It is equipped with guide ring（14）.
6. a kind of rotary shaft pressure maintaining valve according to claim 1, it is characterised in that：The control chamber（5）Inside it is additionally provided with
Limiting slot（15）, the pushing block（6）On be provided with and limiting slot（15）The limited block being adapted（16）.
7. a kind of rotary shaft pressure maintaining valve according to claim 1, it is characterised in that：The elastic element（9）For butterfly bullet
Spring.
8. a kind of rotary shaft pressure maintaining valve according to claim 2, it is characterised in that：The adjusting rod（11）On be provided with pressure
Force snesor（17）, display screen is provided on valve body（18）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721302519.0U CN207421439U (en) | 2017-10-11 | 2017-10-11 | A kind of rotary shaft pressure maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721302519.0U CN207421439U (en) | 2017-10-11 | 2017-10-11 | A kind of rotary shaft pressure maintaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207421439U true CN207421439U (en) | 2018-05-29 |
Family
ID=62310708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721302519.0U Active CN207421439U (en) | 2017-10-11 | 2017-10-11 | A kind of rotary shaft pressure maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207421439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953682A (en) * | 2018-07-27 | 2018-12-07 | 无锡飞述科技有限公司 | A kind of releasing pressure automatically constant-current stabilizer and its method for water supply |
-
2017
- 2017-10-11 CN CN201721302519.0U patent/CN207421439U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953682A (en) * | 2018-07-27 | 2018-12-07 | 无锡飞述科技有限公司 | A kind of releasing pressure automatically constant-current stabilizer and its method for water supply |
| CN108953682B (en) * | 2018-07-27 | 2019-10-15 | 上海上源泵业制造有限公司 | A kind of releasing pressure automatically constant-current stabilizer and its method for water supply |
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