CN208982721U - A kind of link-type pressure maintaining valve - Google Patents
A kind of link-type pressure maintaining valve Download PDFInfo
- Publication number
- CN208982721U CN208982721U CN201821200842.1U CN201821200842U CN208982721U CN 208982721 U CN208982721 U CN 208982721U CN 201821200842 U CN201821200842 U CN 201821200842U CN 208982721 U CN208982721 U CN 208982721U
- Authority
- CN
- China
- Prior art keywords
- control
- valve body
- rod
- spool
- pressure
- 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 - Fee Related
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- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a kind of link-type pressure maintaining valves, including valve body, sliding is provided with spool on the valve body being provided on the valve body, control-rod is slidably fitted on the valve body, it is connected between the control-rod and spool by connecting rod, pressure release passage and relief hole are respectively arranged on the valve body and spool, when pressure is more than the upper limit value of pressure maintaining valve, control-rod moves up and down in control chamber, make the linear motion of left and right directions with movable valve plug by connecting rod during its movement, it is overlapped pressure release passage and relief hole partly or entirely, realizes pressure release；Simultaneously during pressure becomes smaller, control-rod makees counter motion under the action of compressed spring, and restores with movable valve plug, reduces the size of the coincidence part of relief hole and pressure release passage；Its reliable operation is adjusted rapidly, while it controls precision height, improves the stability of pressure.
Description
Technical field
The utility model relates to valve technology fields, and in particular to a kind of link-type pressure maintaining valve.
Background technique
Pressure maintaining valve is known as decompression venting valve again, adjusts medium by the aperture of the opening and closing element inside application valve body
Flow achievees the purpose that reduce pressure medium, while adjusting the aperture of opening and closing element by the effect of downstream pressure, makes downstream pressure
It keeps in a certain range, in the continually changing situation of inlet pressure, keeps outlet pressure in the range of setting, thus
Remaining production equipment is protected, and then reaches and guarantees going on smoothly for production.
The Chinese utility model patent of Publication No. CN202597826U discloses 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 has spring, and for the spring other end in fixing seat, fixing seat is nested with anchor tip, is sequentially connected a diaphragm and one
Limit film, 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, other side guiding
Surge-chamber.The utility model structure is simple, can voluntarily be adjusted to the pressure of water system, to make stable water pressure, together
When also extend the service life of instrument.
Summary of the invention
For the defect of pressure maintaining valve voltage regulation result difference existing in the prior art, the utility model discloses a kind of link-types
Pressure maintaining valve, the utility model have many advantages, such as that voltage regulation result is good, and corresponding speed is fast.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of link-type pressure maintaining valve, including valve body and spool, it is characterised in that: the spool is slidably mounted in valve body,
The pressure release passage and relief hole of cooperation are set on the valve body and spool；It is provided with control chamber on the valve body, is slided in control chamber
It is dynamic to be provided with control-rod；It is connected between one end of the control-rod and spool by connecting rod, on the other end and valve body of control-rod
Fluid channel connection；It is provided with the compressed spring for controlling to adjust the throw of lever on the valve body and is used for control valve core stroke
Butterfly spring.
One end of the control chamber is provided with plug, is provided on the plug for adjusting compressed spring initial pressure
First adjusting rod.
It is additionally provided with limited block and limiting slot between the valve body and spool, is additionally provided on valve body for adjusting butterfly bullet
Second adjusting rod of spring initial pressure.
Linear motion bearing is provided between the spool and valve body.
Linear motion bearing is provided between the control-rod and control chamber.
Mutually matched limited block and limiting slot are provided between the control-rod and control chamber.
The both ends of the relief hole are provided with guide ring.
Compared with prior art, the utility model has the following beneficial effects:
1, sliding is provided with spool on the valve body being provided on the valve body of the utility model, is slidably fitted on the valve body
Control-rod is connected between the control-rod and spool by connecting rod, be respectively arranged on the valve body and spool pressure release passage and
Relief hole, when pressure is more than the upper limit value of pressure maintaining valve, control-rod moves up and down in control chamber, leads to during its movement
The linear motion that connecting rod makees left and right directions with movable valve plug is crossed, is overlapped pressure release passage and relief hole partly or entirely, realizes pressure release；
Simultaneously during pressure becomes smaller, control-rod makees counter motion under the action of compressed spring, and restores with movable valve plug, reduces
The size of the coincidence part of relief hole and pressure release passage；Its reliable operation is adjusted rapidly, while it controls precision height, improves pressure
The stability of power.
2, one end of the control chamber of the utility model is provided with plug, and the first adjusting rod is provided on plug, passes through first
Adjusting rod user can apply an initial pressure to compressed spring, to adjust the operating valve value of pressure maintaining valve, adjust more
Add accurately, while pressure maintaining valve being made to can satisfy different use demands, expands the scope of application of pressure maintaining valve.
3, the utility model is provided with limited block and limiting slot between spool and valve body, limits the movement position of spool,
Guarantee that its scope of activities is in controlled range always；Spool is set to be in quilt always by butterfly spring and the second adjusting rod simultaneously
The state being fixedly secured avoids controlling inaccurate, voltage regulation result difference adverse consequences caused by loosening because of spool, raising pressure stabilizing quality.
4, it is provided with linear motion bearing between the spool and valve body of the utility model, be arranged between control-rod and control chamber
There is linear motion bearing, on the one hand reduce the obstruction that frictional force moves spool and control-rod, to improve the standard for adjusting control
On the other hand true property improves the fluency of spool and pushing block movement, avoids the occurrence of mechanical clamping stagnation, guarantees pressure maintaining valve mechanical action
Smooth realization.
5, it is provided with limiting slot in the control chamber of the utility model, is provided with limited block on control-rod, limits control-rod
Scope of activities, mechanical damage caused by avoiding because of excessive slip extend the service life of equipment.
6, the both ends of the relief hole of the utility model are provided with guide ring, and high-pressure fluid and spool is avoided to collide to spool
Movement generate obstruction, mention high control precision.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Appended drawing reference: 1, valve body, 2, spool, 3, pressure release passage, 4, relief hole, 5, control chamber, 6, control-rod, 7, connecting rod,
8, compressed spring, 9, butterfly spring, 10, plug, the 11, first adjusting rod, 12, limited block, 13, limiting slot, 14, second is adjusted
Bar, 15, linear motion bearing, 16, guide ring, 17, spool chamber.18, push plate.
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, specific structures
As shown in Figure 1, including valve body 1 and spool 2, it is vertically arranged with control chamber 5 on the valve body 1, is horizontally disposed with and is used on valve body 1
The spool chamber 17 of spool 2 is accommodated, the control-rod 6 is slidably mounted in control chamber 5 by linear motion bearing 15, the spool
2 are slidably mounted in spool chamber 17 by linear motion bearing 15, and spool chamber 17 is sealed by plug 10, and the is provided on plug 10
Two adjusting rods 14 are provided with butterfly spring 9 between second adjusting rod 14 and spool 2；Pressure release is also vertically arranged on the valve body 1
Channel 3, the pressure release passage 3 are connected to spool chamber 17, and relief hole 4 is provided on the spool 2, and the spool 2 is making straight line
The size of the intersection of relief hole 4 and pressure release passage 3 is controlled during movement, to realize the opening and closing to pressure release passage 3
The accurate control of degree；Connecting rod 7 is hinged on the control-rod 6, the other end and spool 2 of connecting rod 7 are hinged, the control chamber 5
It is inside provided with plug 10, first adjusting rod 11 is equipped with by screw thread on plug 10, described first adjusting rod, 11 one end passes through stifled
First 10 are inserted into control chamber 5, and one end that the adjusting rod 11 is inserted into control chamber 5 is provided with baffle 18, the baffle 18 and control
Against there is compressed spring 8 between bar 6 processed.
The both ends of the relief hole 4 are provided with guide ring 16.
It is additionally provided with limiting slot 13 in the control chamber 5, limit compatible with limiting slot 13 is provided on the control-rod 6
Position block 12.
Working principle of the utility model is: when the pressure of fluid is more than the threshold values of setting, under the promotion of fluid, control
Bar moves upwards, and compresses compressed spring, and for linear motion by connecting rod band movable valve plug, spool in the process of movement, is located at
Relief hole on spool partially overlaps with pressure release passage, keeps unimpeded pressure release passage；Decompression function is smoothly realized, when fluid
When pressure reduction, control-rod is reduced by the thrust of fluid, and pushing block moves downward under the action of compressed spring elastic force at this time, contracting
The size of small relief hole and pressure release passage intersection, until completely closing；The utility model can be big according to the pressure of fluid
The size of the intersection of small flexible modulation relief hole and pressure release passage has many advantages, such as that control is accurate, voltage regulation result is good.
Claims (7)
1. a kind of link-type pressure maintaining valve, including valve body (1) and spool (2), it is characterised in that: the spool (2) is slidably mounted on
In valve body (1), mutually matched pressure release passage (3) and relief hole (4) are provided on the valve body (1) and spool (2)；The valve
It is provided on body (1) control chamber (5), sliding is provided with control-rod (6) in control chamber (5)；One end of the control-rod (6) and valve
It is connected between core (2) by connecting rod (7), the other end of control-rod (6) and the fluid channel connection on valve body (1)；The valve body
(1) it is provided with the compressed spring (8) for lever for adjusting oil (6) stroke on and is used for the butterfly spring of control valve core (2) stroke
(9).
2. a kind of link-type pressure maintaining valve according to claim 1, it is characterised in that: one end of the control chamber (5) is arranged
Have plug (10), the first adjusting rod (11) for adjusting compressed spring (8) initial pressure is provided on the plug (10).
3. a kind of link-type pressure maintaining valve according to claim 1, it is characterised in that: between the valve body (1) and spool (2)
It is additionally provided with limited block (12) and limiting slot (13), is additionally provided on valve body (1) for adjusting butterfly spring (9) initial pressure
Second adjusting rod (14).
4. a kind of link-type pressure maintaining valve according to claim 1, it is characterised in that: between the spool (2) and valve body (1)
It is provided with linear motion bearing (15).
5. a kind of link-type pressure maintaining valve according to claim 1, it is characterised in that: the control-rod (6) and control chamber (5)
Between be provided with linear motion bearing (15).
6. a kind of link-type pressure maintaining valve according to claim 1, it is characterised in that: the control-rod (6) and control chamber (5)
Between be provided with mutually matched limited block (12) and limiting slot (13).
7. a kind of link-type pressure maintaining valve according to claim 1, it is characterised in that: the both ends of the relief hole (4) are all provided with
It is equipped with guide ring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200842.1U CN208982721U (en) | 2018-07-27 | 2018-07-27 | A kind of link-type pressure maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200842.1U CN208982721U (en) | 2018-07-27 | 2018-07-27 | A kind of link-type pressure maintaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208982721U true CN208982721U (en) | 2019-06-14 |
Family
ID=66780523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821200842.1U Expired - Fee Related CN208982721U (en) | 2018-07-27 | 2018-07-27 | A kind of link-type pressure maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208982721U (en) |
-
2018
- 2018-07-27 CN CN201821200842.1U patent/CN208982721U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190614 Termination date: 20200727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |