CN208982720U - A kind of pressure maintaining valve - Google Patents
A kind of pressure maintaining valve Download PDFInfo
- Publication number
- CN208982720U CN208982720U CN201821200576.2U CN201821200576U CN208982720U CN 208982720 U CN208982720 U CN 208982720U CN 201821200576 U CN201821200576 U CN 201821200576U CN 208982720 U CN208982720 U CN 208982720U
- Authority
- CN
- China
- Prior art keywords
- spool
- control
- chamber
- pressure
- rod
- 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)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a kind of pressure maintaining valves, including valve body and spool, the control-rod that is provided with the spool that can be horizontally slipped on valve body and can move up and down, shaft is provided between the control-rod and spool, cam and transmission gear are provided in shaft, rack gear is provided on the control-rod, the utility model is rotated by the motion control cam of control-rod, the reciprocating motion of spool is realized to the effect of shoring of spool by cam, and then realize turning off or on for pressure release passage, to guarantee that the pressure of fluid is in control range always；The utility model has many advantages, such as that reliable operation, adjusting are rapid, 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 pressure maintaining valve.
Background technique
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 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 pressure stabilizing on December 12nd, 2012
Valve, including valve body, valve deck, spool, valve deck and valve body are screwed, it is characterised in that: are had adjusting nut on valve deck, adjusted spiral shell
Master tape has spring, and for the spring other end in fixing seat, fixing seat is nested with anchor tip, is sequentially connected a diaphragm and a limit
Piece, spool top screw in anchor tip, and lower part is packed into the valve body mesoporous of valve body, and valve body is divided into intake chamber, pressure regulation
There are T-shaped through-hole in room, water-supplying chamber in spool, wherein two side through hole are individually directed intake chamber and water-supplying chamber, the other side is oriented to pressure regulation
Room.The utility model structure is simple, can voluntarily be adjusted to the pressure of water system, thus make stable water pressure, while
Extend the service life of instrument.
Summary of the invention
Poor for pressure maintaining valve voltage regulation result existing in the prior art, pressure medium fluctuates the defects of big, the utility model
A kind of pressure maintaining valve is disclosed, the utility model has voltage regulation result good, high reliablity lamp advantage.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of pressure maintaining valve, including valve body and spool, it is characterised in that: setting is horizontally disposed in the valve body spool chamber,
It is vertically arranged with pressure release passage and control chamber, wherein pressure release passage and spool chamber are interconnected, and spool chamber is mutually interconnected with control chamber
It is logical；Sliding is provided with spool in the spool chamber, is provided with relief hole on spool；Sliding is provided with control in the control chamber
Bar is additionally provided with shaft in control chamber, transmission gear and cam is provided in the shaft, is provided with and passes on the control-rod
The compatible rack gear of moving gear；Compressed spring and butterfly spring are respectively arranged in the control chamber and spool chamber.
Linear motion bearing is equipped on the spool and control-rod.
One end of the control chamber and spool chamber is provided with plug, is provided with adjusting rod on the plug.
Push plate is provided on the adjusting rod.
Limited block and limiting slot are provided between the spool and spool chamber, between control-rod and control chamber.
It is additionally provided with pressure sensor in the control chamber, controller and warning device are provided on the valve body, it is described
The input terminal of controller is connected with pressure sensor, and the output end of controller is connected with warning device.
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, the control-rod that the utility model is provided with the spool that can be horizontally slipped on valve body and can move up and down, institute
It states and is provided with shaft between control-rod and spool, cam and transmission gear are provided in shaft, is arranged on the control-rod with teeth
Item, pressure stabilizing valve closure under normal operating conditions, when hypertonia, control-rod moves upwards under the effect of the pressure, passes through tooth
Item and drive gears moving cam rotation, to discharge spool, spool moves under the action of butterfly spring, make pressure release passage with
Relief hole is partially overlapped or is completely coincident, to realize pressure release, guarantees that the intracorporal pressure of valve is stablized；And with the reduction of pressure,
Control-rod moves downward under the promotion of compressed spring, and then withdraws with moving cam rotary squeezing spool, so that it is logical to close pressure release
Road, the utility model has many advantages, such as that reliable operation, adjusting are rapid, while it controls precision height, improves the stability of pressure.
2, it is provided with linear motion bearing on the spool and control-rod of the utility model, on the one hand reduces frictional force to valve
Core and control-rod movement obstruction, thus improve adjust control accuracy, on the other hand improve spool and pushing block movement
Process avoids the occurrence of mechanical clamping stagnation, guarantees the smooth realization of pressure maintaining valve mechanical action.
3, it is provided with plug on the control chamber of the utility model and spool chamber, is provided with adjusting rod on the plug, one
Aspect facilitates the assembling and maintenance of equipment by plug, while adjusting initial pressure by adjusting rod, so that control valve is dynamic
Make threshold values, expands the scope of application of valve.
4, it is provided with push plate on the adjusting rod of the utility model, on the one hand controls the adjusting of adjusting rod more convenient, smart
Really, on the other hand it is that accepting for compressed spring and butterfly spring is more uniform, improves the stability of equipment.
5, the utility model is provided with limited block and limit between spool and spool chamber, between control-rod and control chamber
Slot limits the position of spool and control-rod, guarantees that its scope of activities is in controlled range always, improve the reliability of equipment；
Simultaneously guarantee that spool can be locked in time under hard service, improves the safety of equipment.
6, the utility model is provided with pressure sensor in control chamber, and the pressure sensor is connected with controller, institute
It states controller and is connected with warning device, the pressure sensor when equipment is in hard service, in rack gear and control chamber
Mutual extrusion to transmit corresponding control signal to controller, and is located to alert personnel and in time by warning device
It sets, improves the safety and reliability of work, while avoiding the damage to work overloadingly for a long time to equipment, improve equipment
Service life.
7, 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, improve the accuracy of control.
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, spool chamber, 4, pressure release passage, 5, control chamber, 6, relief hole, 7, control
Bar, 8, shaft, 9, transmission gear, 10, cam, 11, rack gear, 12, compressed spring, 13, butterfly spring, 14, linear motion bearing,
15, plug, 16, adjusting rod, 17, push plate, 18, limited block, 19, limiting slot, 20, pressure sensor, 21, controller, 22, alarm
Device, 23, guide ring.
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 pressure maintaining valve, specific structure such as Fig. 1 institutes
Show, including valve body 1 and spool 2, is vertically arranged with control chamber 5 and pressure release passage 4 on the valve body 1, it is horizontally disposed to have spool chamber
3, and spool chamber 3, simultaneously with 4 connection of control chamber 5 and pressure release passage, the valve core chamber 3 is interior to be set by the sliding of linear motion bearing 14
It is equipped with spool 2, relief hole 6 compatible with pressure release passage 4 is provided on spool 2；One end of the spool chamber 3 passes through plug 15
It closes, screwed connection has adjusting rod 16 on plug 15, and one end that the adjusting rod 16 is located in spool chamber 3 is provided with push plate 17,
Against there is butterfly spring 13 between push plate 17 and spool 2, it is additionally provided between the spool chamber 3 and spool 2 mutually matched
Limited block 18 and limiting slot 19；It is slided in the control chamber 5 by linear motion bearing 14 and is provided with control-rod 7, in control chamber 5
It is additionally provided with shaft 8, transmission gear 9 and cam 10 are fixedly installed in the shaft 8, is provided with and passes on the control-rod 7
The compatible rack gear 11 of moving gear 9, the cam 10 are in contact with the end face of spool 2；One end of the control chamber 5 passes through one end
It is connected with the fluid channel 4 on valve body 1, the other end is sealed by plug 15, and screwed connection has adjusting rod on the plug 15
16, one end that the adjusting rod 16 is located in control chamber 5 is provided with push plate 17, against having between the push plate 17 and control-rod 7
Compressed spring 12 is additionally provided with mutually matched limited block 18 and limiting slot 19 between the control chamber 5 and control-rod 7；It is described
It is additionally provided with pressure sensor 20 in control chamber 5, warning device 22 and controller 21 are provided on valve body 1, wherein controller 21
Input terminal be connected with pressure sensor 20, the output end of controller 21 and warning device 22, and pressure sensor 20 and rack gear
11 is corresponding.
The both ends of the relief hole 6 are provided with guide ring 23.
Working principle of the utility model is: fluid forces control-rod moves upwards, control-rod when the hypertonia of fluid
It is rotated during squeezing compressed spring by rack gear and drive gears turn axis, and then is rotated with moving cam, thus loose
The locking to spool is opened, spool moves downward under the action of butterfly spring, so that relief hole and pressure release passage be made to partially overlap
Or be completely coincident, realize pressure release, voltage stabilizing function；When the pressure reduction of fluid, control-rod is downward under the action of compressed spring
Movement, and then cam return is driven, spool is shored can be in situ, realizes the closing to pressure release passage, and the utility model has knot
The advantages that structure is simple, relevant block, and voltage regulation result is good.
Claims (7)
1. a kind of pressure maintaining valve, including valve body (1) and spool (2), it is characterised in that: setting is horizontally disposed in the valve body (1) has
Spool chamber (3) is vertically arranged with pressure release passage (4) and control chamber (5), and wherein pressure release passage (4) is mutually interconnected with spool chamber (3)
Logical, spool chamber (3) and control chamber (5) are interconnected；Sliding is provided with spool (2) in the spool chamber (3), and spool is set on (2)
It is equipped with relief hole (6)；Sliding is provided with control-rod (7) in the control chamber (5), is additionally provided with shaft (8) in control chamber (5),
It is provided with transmission gear (9) and cam (10) on the shaft (8), is provided on the control-rod (7) and transmission gear (9) phase
The rack gear (11) of adaptation；Compressed spring (12) and butterfly spring are respectively arranged in the control chamber (5) and spool chamber (3)
(13).
2. a kind of pressure maintaining valve according to claim 1, it is characterised in that: be nested on the spool (2) and control-rod (7)
There are linear motion bearing (14).
3. a kind of pressure maintaining valve according to claim 1, it is characterised in that: one end of the control chamber (5) and spool chamber (3)
It is provided with plug (15), is provided with adjusting rod (16) on the plug (15).
4. a kind of pressure maintaining valve according to claim 3, it is characterised in that: be provided with push plate on the adjusting rod (16)
(17).
5. a kind of pressure maintaining valve according to claim 1, it is characterised in that: between the spool (2) and spool chamber (3), control
Limited block (18) and limiting slot (19) are provided between bar (7) processed and control chamber (5).
6. a kind of pressure maintaining valve according to claim 1, it is characterised in that: be additionally provided with pressure biography in the control chamber (5)
Sensor (20), is provided with controller (21) and warning device (22) on the valve body (1), the input terminal of the controller (21) with
Pressure sensor (20) is connected, and the output end of controller (21) is connected with warning device (22).
7. a kind of pressure maintaining valve according to claim 1, it is characterised in that: the both ends of the relief hole (6), which are provided with, leads
It flows ring (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200576.2U CN208982720U (en) | 2018-07-27 | 2018-07-27 | A kind of pressure maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200576.2U CN208982720U (en) | 2018-07-27 | 2018-07-27 | A kind of pressure maintaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208982720U true CN208982720U (en) | 2019-06-14 |
Family
ID=66780518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821200576.2U Expired - Fee Related CN208982720U (en) | 2018-07-27 | 2018-07-27 | A kind of pressure maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208982720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805727A (en) * | 2019-11-15 | 2020-02-18 | 东莞海特帕沃液压科技有限公司 | Safety valve |
-
2018
- 2018-07-27 CN CN201821200576.2U patent/CN208982720U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805727A (en) * | 2019-11-15 | 2020-02-18 | 东莞海特帕沃液压科技有限公司 | Safety valve |
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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 |