CN202597823U - Piston type pressure releasing valve - Google Patents
Piston type pressure releasing valve Download PDFInfo
- Publication number
- CN202597823U CN202597823U CN 201220181783 CN201220181783U CN202597823U CN 202597823 U CN202597823 U CN 202597823U CN 201220181783 CN201220181783 CN 201220181783 CN 201220181783 U CN201220181783 U CN 201220181783U CN 202597823 U CN202597823 U CN 202597823U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- current control
- rod
- control channel
- 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
Links
Images
Abstract
The utility model relates to the technical field of valves, and provides a piston type pressure releasing valve which has a good effect of pressure releasing, long service life, and precise pressure control and is stable. The piston type pressure releasing valve comprises a valve body, an upper valve cover, a lower valve cover and a valve core mechanism, wherein the valve body comprises a transverse water inlet channel, a transverse water outlet channel and a vertical stream control channel; the upper valve core is arranged at the upper part of the valve body on the vertical steam control channel; the lower valve core is arranged at the lower part of the valve body on the vertical stream control channel; the valve core mechanism comprises a valve rod, a valve blade, a valve blade sealing cushion and an adjusting screw, wherein the valve rod is arranged into the vertical steam control channel in the valve body through a way of moving up and down; the upper part of the valve body has a piston type structure; the valve blade and the valve blade sealing cushion are arranged at the lower part of the valve rod, and can be switched on a valve seat of the valve body by moving the valve rod up and down; the adjusting screw is arranged on the upper valve core, with one end extending into the valve body; a spring seat is arranged at one end of the adjusting screw in the valve body; a spring is arranged between the spring seat and the upper end of the valve body; and a through hole communicated with the atmosphere is also arranged on the upper valve core.
Description
Technical field
The utility model relates to valve technology field, and especially a kind of outlet pressure that makes valve is lower than the Piston reducing valve of inlet pressure.
Background technique
Reduction valve is a kind of special arrangement of automatic reduction working pressure of pipeline; It can be reduced to the required level of pipeline behind the valve with pipeline higher hydraulic pressure before the valve; Reduction valve is widely used in tall building, too high zone, mine and other occasions of city water-supply pipe network hydraulic pressure, and each obtains suitable service hydraulic pressure and flow with water spot in the water system to ensure to.
Traditional reduction valve comprises valve body; Said valve body is provided with horizontal intake tunnel and exhalant canal, also is provided with vertical current control channel on the said valve body, and the adjacent place of the friendship of said valve body between current control channel, intake tunnel and exhalant canal is provided with valve seat; Said valve seat is provided with a current control mouth that is communicated with intake tunnel and exhalant canal; Vertical current control channel top is provided with bonnet, and the bottom is provided with lower end cap, and current control channel is provided with spool mechanism; Said spool mechanism comprise with up and down movably mode be contained in the valve rod on the current control channel and be fixedly arranged on bonnet and valve body between diaphragm; The upper end of said valve rod is fixedly arranged on the diaphragm, and the lower end of this valve rod is provided with flap and flap sealing seat, and said bonnet is provided with adjusting screw rod; This adjusting screw rod is provided with spring seat, is provided with pressure control spring between said spring seat and the diaphragm.Traditional reduction valve is diaphragm operation type reduction valve, by the equilibrium condition of diaphragm through pressure feedback mechanism inspection side outlet pressure and spring pressure, detects the circulation volume between back control flap and the valve seat during work; Guarantee the balance of pressure; The stability of this its exhalant canal pressure of diaphragm type reduction valve directly depends on diaphragm, and the pressure regulation error is big, pressure stability is qualitative poor, and diaphragm is in use damaged easily; Be prone to make reduction valve function out of hand, shortened the working life of reduction valve.
Summary of the invention
Therefore, to above-mentioned problem, the utility model proposes that a kind of effect of easing stress is good, long service life, Piston reducing valve that pressure control is accurate, stable.
For realizing above-mentioned purpose; The utility model has adopted following technological scheme: a kind of Piston reducing valve, comprise valve body, bonnet, bottom flange and spool mechanism, and said valve body is provided with horizontal intake tunnel and exhalant canal; Also be provided with vertical current control channel on the said valve body; The adjacent place of the friendship of said valve body between current control channel, intake tunnel and exhalant canal is provided with valve seat, and said valve seat is provided with a current control mouth that is communicated with intake tunnel and exhalant canal, and said bonnet is located at the top that valve body is positioned at vertical current control channel; Said bottom flange is located at the bottom that valve body is positioned at vertical current control channel; Described spool mechanism comprises valve rod, flap, flap sealing gasket, adjusting screw rod, said valve rod with up and down movably mode be contained in the valve body in the said vertical current control channel, the top of valve rod is piston cylinder operator; But said flap and flap sealing gasket are located at the bottom of valve rod and are moved up and down folding on the valve seat of being located at said valve body through valve rod; Adjusting screw rod is located on the bonnet, and the one of which end puts in the valve body, and that end that said adjusting screw rod is positioned at valve body is provided with spring seat; Be provided with spring between said spring seat and the valve rod upper end, also be provided with the through hole that is communicated with atmosphere on the said bonnet.
Further improvedly be: said valve body is provided with filter screen between valve seat current control mouthful and exhalant canal, said filter screen is positioned at the upper end of bottom flange.
Further improvedly be: also be provided with on the exhalant canal of said valve body and be communicated with manometric passway, said passway is provided with pressure gauge.
Further improvedly be: be equipped with one on the vertical current control channel of said valve body and cross fluid; Crossing the upper end of fluid is pushed down by bonnet; Be provided with up big and down small stepped shaft cylindrical hole in the middle of crossing fluid; The top of valve rod was contained on the great circle cylindricality through hole of fluid top, was provided with the O RunddichtringO between the top of valve rod and the mistake fluid top great circle cylindricality through hole, also was provided with the O RunddichtringO between the middle and upper part of valve rod and the mistake fluid middle part small cylindrical through hole; Two O RunddichtringOs and valve rods and cross the space that fluid surrounds and form the control air chamber, the said fluid of crossing is provided with the connecting through hole that connects control air chamber and exhalant canal.
Through adopting the aforementioned techniques scheme, the beneficial effect of the utility model is:
1, piston cylinder operator is adopted on the top of valve rod; The aperture that moves up and down the control valve core mechanism through the piston type valve rod; The control that valve rod moves up and down compresses through adjusting screw rod and spring seat or pull-off spring changes the active force on valve rod top; It is rational in infrastructure, control is convenient, pressure control is accurate, stable, long service life; Valve rod moves up and down no jam, travelling performance is reliable, durable in use, sealing is reliable, has improved the reliability that whole reduction valve uses, and has solved traditional relief valve because of the easy impaired defective that makes reduction valve function out of hand of diaphragm.
2, filter screen is located at the upper end that current are controlled between mouth and the exhalant canal and are positioned at bottom flange, and the dismounting bottom flange just can be taken out filter screen, and it is just very convenient therefore to change filter screen or cleaning and filtering net.
3, exhalant canal is provided with and is communicated with manometric passage, but the setting pressure table is monitored the pressure of exhalant canal, just can more accurately adjust the pressure of water channel again through the rotation adjusting screw rod.
4, the control that valve rod is moved up and down not only compresses through adjusting screw rod and spring seat or pull-off spring changes the active force on valve rod top; Also cooperate with the top of current control channel and form moving up and down of a control air chamber control valve rod on the top of valve rod; Make that the aperture control of current control mouth is more accurate, the discharge pressure control of exhalant canal is more accurate.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Embodiment
Combine accompanying drawing and embodiment that the utility model is further specified at present.
Consult shown in Figure 1; A kind of Piston reducing valve; Comprise valve body 1, bonnet 2, bottom flange 3, valve rod 4, flap 41, flap sealing gasket 42, reach adjusting screw rod 5, said valve body 1 is provided with horizontal intake tunnel 11 and exhalant canal 12, also is provided with vertical current control channel 13 on the said valve body 1; The adjacent place of the friendship of said valve body between current control channel, intake tunnel and exhalant canal is provided with valve seat 14; Said valve seat is provided with a current control mouth 141 that is communicated with intake tunnel and exhalant canal, and said bonnet 2 is located at the top that valve body 1 is positioned at vertical current control channel 13, and said bottom flange 3 is located at the bottom that valve body 1 is positioned at vertical current control channel 13; Said valve rod 4 with up and down movably mode be contained in the valve body 1 in the said vertical current control channel 13; The top of valve rod 4 is piston cylinder operator, but said flap 41 and flap sealing gasket 42 be located at valve rod 4 the bottom and through valve rod 4 move up and down folding on the valve seat of being located at said valve body 1 14, adjusting screw rod 5 is located on the bonnet 2; The one of which end puts in the valve body 1; That end that said adjusting screw rod 5 is positioned at valve body 1 is provided with spring seat 6, is provided with spring 7 between said spring seat 6 and valve rod 4 upper ends, also is provided with the through hole 21 that is communicated with atmosphere on the said bonnet 2.This novel piston formula reduction valve; Piston cylinder operator is adopted on the top of valve rod; The aperture that moves up and down the control valve core mechanism through the piston type valve rod; The control that valve rod moves up and down compresses through adjusting screw rod and spring seat or pull-off spring changes the active force on valve rod top, and it is rational in infrastructure, control is convenient, pressure control is accurate, stable, long service life, valve rod move up and down no jam, travelling performance reliable, durable in use, seal reliably; Improved the reliability that whole reduction valve uses, solved traditional relief valve because of the easy impaired defective that makes reduction valve function out of hand of diaphragm.
Said valve body 1 is provided with filter screen 8 between valve seat 14 current control mouth 141 and exhalant canal 12, said filter screen 8 is positioned at the upper end of bottom flange 3.Filter screen is located between current control mouth and the exhalant canal and is positioned at the upper end of bottom flange, and the dismounting bottom flange just can be taken out filter screen, therefore changes filter screen or cleaning and filtering net just easily.
Also be provided with on the exhalant canal 12 of said valve body 1 and be communicated with manometric passway 15; Said passway 15 is provided with pressure gauge 9; Exhalant canal is provided with and is communicated with manometric passage; But the setting pressure table is monitored the pressure of exhalant canal, just can more accurately adjust the pressure of water channel again through the rotation adjusting screw rod.
Be equipped with one on the said valve body 1 vertical current control channel 13 and cross fluid 16; Crossing the upper end of fluid 16 is pushed down by bonnet 2; Be provided with up big and down small stepped shaft cylindrical hole in the middle of crossing fluid 16; The top of valve rod 4 was contained on the fluid 16 top great circle cylindricality through holes, was provided with O RunddichtringO 17 between the top of valve rod 4 and the mistake fluid 16 top great circle cylindricality through holes, also was provided with O RunddichtringO 18 between the middle and upper part of valve rod 4 and the mistake fluid 16 middle part small cylindrical through holes; Two O RunddichtringOs and valve rods 4 and cross the space that fluid 16 surrounds and form control air chamber 19; The said fluid 16 of crossing is provided with the connecting through hole 161 that connects control air chamber and exhalant canal, and the control that valve rod is moved up and down not only compresses through adjusting screw rod and spring seat or pull-off spring changes the active force on valve rod top, also cooperates formation one to control air chamber on the top of valve rod with the top of current control channel and controls moving up and down of valve rod; Make that the aperture control of current control mouth is more accurate, the discharge pressure control of exhalant canal is more accurate.
Working principle of the present invention is that the throttling action that the aperture size through current control on the control valve seat mouthful forms makes the pressure of intake tunnel and the certain pressure reduction of pressure appearance of exhalant canal realize reducing pressure; When the exhalant canal of valve body does not have pressure; Valve rod is shifted to bottom under the effect of spring, and the aperture of current control this moment mouth is maximum, when the pressure of exhalant canal raises; The pressure of exhalant canal will pass to the lower end of control air chamber and valve rod through the connecting through hole of control air chamber and exhalant canal; Thereby move on the promotion valve rod, make the aperture of current control mouth reduce the throttling action increasing, reach new pressure balance; When exhalant canal was closed, the pressure of exhalant canal can continue to strengthen and will promote valve rod and move on continuing and block current control mouth up to the flap sealing gasket and close reduction valve.
The rotation adjusting screw rod can make spring compression and the active force that loosens the regulating valve stem upper end, influences the aperture of current control mouth, thereby can adjust the discharge pressure size of water channel, can accomplish more accurate adjustment through manometric monitoring.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; Can make various variations to the utility model in form with on the details, be the protection domain of the utility model.
Claims (4)
1. Piston reducing valve; Comprise valve body, bonnet, bottom flange and spool mechanism; Said valve body is provided with horizontal intake tunnel and exhalant canal, also is provided with vertical current control channel on the said valve body, and the adjacent place of the friendship of said valve body between current control channel, intake tunnel and exhalant canal is provided with valve seat; Said valve seat is provided with a current control mouth that is communicated with intake tunnel and exhalant canal; Said bonnet is located at the top that valve body is positioned at vertical current control channel, and said bottom flange is located at the bottom that valve body is positioned at vertical current control channel, it is characterized in that: described spool mechanism comprises valve rod, flap, flap sealing gasket, adjusting screw rod; Said valve rod with up and down movably mode be contained in the valve body in the said vertical current control channel; The top of valve rod is piston cylinder operator, but said flap and flap sealing gasket be located at valve rod the bottom and through valve rod move up and down folding on the valve seat of being located at said valve body, adjusting screw rod is located on the bonnet; The one of which end puts in the valve body; That end that said adjusting screw rod is positioned at valve body is provided with spring seat, is provided with spring between said spring seat and the valve rod upper end, also is provided with the through hole that is communicated with atmosphere on the said bonnet.
2. Piston reducing valve according to claim 1 is characterized in that: said valve body is provided with filter screen between valve seat current control mouth and exhalant canal, said filter screen is positioned at the upper end of bottom flange.
3. Piston reducing valve according to claim 1 is characterized in that: also be provided with the manometric passway of connection on the exhalant canal of said valve body, said passway is provided with pressure gauge.
4. according to each described Piston reducing valve of claim 1 to 3; It is characterized in that: be equipped with one on the vertical current control channel of said valve body and cross fluid; Crossing the upper end of fluid is pushed down by bonnet; Be provided with up big and down small stepped shaft cylindrical hole in the middle of crossing fluid; The top of valve rod was contained on the great circle cylindricality through hole of fluid top, was provided with the O RunddichtringO between the top of valve rod and the mistake fluid top great circle cylindricality through hole, also was provided with the O RunddichtringO between the middle and upper part of valve rod and the mistake fluid middle part small cylindrical through hole; Two O RunddichtringOs and valve rods and cross the space that fluid surrounds and form the control air chamber, the said fluid of crossing is provided with the connecting through hole that connects control air chamber and exhalant canal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220181783 CN202597823U (en) | 2012-04-24 | 2012-04-24 | Piston type pressure releasing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220181783 CN202597823U (en) | 2012-04-24 | 2012-04-24 | Piston type pressure releasing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597823U true CN202597823U (en) | 2012-12-12 |
Family
ID=47315362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220181783 Expired - Fee Related CN202597823U (en) | 2012-04-24 | 2012-04-24 | Piston type pressure releasing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805370A (en) * | 2016-06-02 | 2016-07-27 | 福建省海洋阀门科技有限公司 | Adjusting valve with self-sealing function |
-
2012
- 2012-04-24 CN CN 201220181783 patent/CN202597823U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805370A (en) * | 2016-06-02 | 2016-07-27 | 福建省海洋阀门科技有限公司 | Adjusting valve with self-sealing function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102278503A (en) | Integral pressure reduction valve | |
| CN202132567U (en) | Integrated reducing valve | |
| CN103542150A (en) | Pressure reducing valve with valve closing function | |
| CN202597823U (en) | Piston type pressure releasing valve | |
| CN207687459U (en) | A kind of bars,folding parallel bar micro-exhaust valve | |
| CN202215812U (en) | Novel reducing valve | |
| CN102720867A (en) | Self-operated flow control valve capable of automatically adjusting pressure difference | |
| CN203743548U (en) | Special pressure reducing and stabilizing valve for fire protection | |
| CN202182222U (en) | Piston type balanced self-reliance pressure-regulating valve | |
| CN211117691U (en) | Stop valve convenient to adjust flow | |
| CN204922114U (en) | Piston axial -flow type control air -vent valve | |
| CN203585471U (en) | Direct flow piston type guide adjustable reducing valve | |
| CN203730860U (en) | Check valve for flow regulation | |
| CN203979424U (en) | A kind of blowdown valve | |
| CN209213051U (en) | A kind of regulating valve of high pressure resistant difference | |
| CN204592461U (en) | A kind of piston type hydraulic control valve | |
| CN203442210U (en) | Valve element guiding structure of tee joint electric control valve | |
| CN201992085U (en) | Ultrahigh pressure difference water supply regulating valve | |
| CN203067894U (en) | Water control valve | |
| CN205423973U (en) | Exhaust relief valve | |
| CN203656295U (en) | Direct action high pressure air pressure balance type pressure regulator | |
| CN104728486A (en) | Self-operated pressure differential filter flow-limiting valve for water pumps | |
| CN203784399U (en) | Low-maintenance type pressure relief/sustaining valve provided with external spring | |
| CN104481838B (en) | Buffering tank for compressor | |
| CN209511388U (en) | A kind of rock drill water pipe elbow |
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 |
Granted publication date: 20121212 Termination date: 20150424 |
|
| EXPY | Termination of patent right or utility model |