CN104534154A - Blow-off valve - Google Patents
Blow-off valve Download PDFInfo
- Publication number
- CN104534154A CN104534154A CN201410843045.5A CN201410843045A CN104534154A CN 104534154 A CN104534154 A CN 104534154A CN 201410843045 A CN201410843045 A CN 201410843045A CN 104534154 A CN104534154 A CN 104534154A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- bonnet
- flap
- pin
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a blow-off valve. The blow-off valve comprises a valve body, a lower valve cover, an upper valve cover, a membrane, a valve rod and a valve clack, wherein the valve body is provided with an air inlet and an air outlet, the lower valve cover is fixedly connected with the upper end of the valve body and fixedly connected with the upper valve cover to form a cavity, and the membrane is fixed between the lower valve cover and the upper valve cover and compressed by the lower valve cover and the upper valve cover to be fixed. A shaft sleeve is arranged at the connection position of the lower valve cover and the valve body, a ventilation hole is formed in the shaft sleeve, the membrane is fixedly connected with the upper end of the valve rod, and a pressing plate is arranged on the upper surface of the membrane. A pressure regulation nut matched with a thread of the upper valve cover is arranged in the upper valve cover, a pressure regulation spring is arranged between the pressure regulation nut and the pressing plate, the lower end of the valve rod extends into the valve body through the shaft sleeve, and the lower end of the valve rod is connected with the valve clack through a pin and a pin hole. A gap is reserved between the pin and the pin hole, a gap is reserved between the valve rod and the valve clack, and a valve port matched with the valve clack is formed in the valve body. The blow-off valve is safe and reliable, the preset value of the blow-off valve can be set by rotating the pressure regulation nut, and therefore, the blow-off valve is simple, convenient and accurate.
Description
Technical field
The present invention relates to valve technology field, particularly the diffusion valve of gas transmission and distribution.
Background technique
Diffusion valve is a kind of safety early warning device of the flammable explosion hazard gases of Cemented filling, when certain temporary transient reason makes the pressure at control point exceed setting value, namely discharges the valve of a certain amount of gas.The usual valve rod of existing diffusion valve is directly fixedly connected with flap, higher to requirement on machining accuracy, otherwise may due to valve rod and flap out of plumb, affect the uniformity of flap and sealing valve port, gas leakage when causing using, present diffusion valve adopts the mode of epithelium and sealing valve port mostly simultaneously, this sealing means causes epithelium easily to wear and tear, and epithelium is easy and valve port is sticked together under long-term pressure, affects the unlatching of diffusion valve, there is potential safety hazard.
Summary of the invention
The object of this invention is to provide a kind of diffusion valve of safe and reliable, automatic adjustment seal clearance.
The technological scheme realizing the object of the invention is as follows:
Diffusion valve, comprise the valve body being provided with suction port and air outlet, also comprise bottom flange, bonnet, epithelium, valve rod and flap, described bottom flange is fixedly connected with valve body upper end, described bottom flange is fixedly connected with bonnet and forms a cavity, described epithelium is fixed between bottom flange and bonnet, described epithelium is fixed by bottom flange and bonnet, described bottom flange and valve body joint are provided with axle sleeve, described axle sleeve has vent, described epithelium is fixedly connected with valve rod upper end, described epithelium upper surface is provided with platen, the look nut with bonnet screw-thread fit is provided with in described bonnet, pressure adjusting spring is provided with between described look nut and platen, described valve rod lower end is stretched in valve body by axle sleeve, described valve rod lower end is provided with pin, described flap is provided with pin-and-hole, described valve rod is connected with flap by pin and pin-and-hole, described pin and pin-and-hole inwall are provided with gap, the valve port coordinated with flap is provided with in described valve body, gap is provided with between described valve rod lower surface and flap upper surface.
Further, in order to increase the sealing between bottom flange and valve body and between flap and valve port, between described bottom flange and valve body, being provided with an O type circle, between described flap and valve port, being provided with the 2nd O type circle.
Preferably, in order to prevent impurity from calling in bonnet, described bonnet upper end is provided with top cover labyrinth.
Further, in order to bonnet and top cover labyrinth easy to connect, described top cover labyrinth is connected with bonnet inner thread.
Preferably, conveniently clear up valve interior wall, facilitate blowdown, described valve body is provided with clean-up port, and described clean-up port place is provided with lower sealing cover.
Further, in order to increase the sealing between lower sealing cover and valve body, between described lower sealing cover and valve body, be provided with the 3rd O type circle.
After adopting said structure, the present invention is safe and reliable, by valve rod lower surface and the gap of flap upper surface and the gap between pin and pin-and-hole, self regulating valve lobe and sealing valve port gap when ensure that depressed stem, make both adequate closures, described axle sleeve has leading role, flap can be made accurately to aim at valve port, enhance the sealing between flap and valve port.The predefined value of diffusion valve just well can be set by rotating look nut, simple, convenient and accurate,
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention.
In figure: 1 is suction port, 2 is air outlet, and 3 is valve body, and 4 is bottom flange, 5 is bonnet, and 6 is epithelium, and 7 is valve rod, and 8 is flap, 9 is the first seal ring, and 10 is platen, and 11 is projection, and 12 is nut, 13 is look nut, and 14 is pressure adjusting spring, and 15 is axle sleeve, and 16 is valve port, 17 is the second seal ring, and 18 is top cover labyrinth, and 19 is clean-up port, and 20 is lower sealing cover, 21 is the 3rd seal ring, and 22 is pin, and 23 is vent.
Embodiment
Diffusion valve of the present invention comprises the valve body 3 being provided with suction port 1 and air outlet 2 as shown in Figure 1, bottom flange 4, bonnet 5, epithelium 6, valve rod 7 and flap 8, described bottom flange 4 is fixedly connected with valve body 3 upper end, the first seal ring 9 is provided with between described bottom flange 4 and valve body 3, described bottom flange 4 is fixedly connected with bonnet 5 and forms a cavity, described bonnet 5 clamps epithelium 6 with bottom flange 4, described epithelium 6 upper surface is provided with platen 10, described valve rod 7 is provided with projection 11, described valve rod 7 upper end is through epithelium 6 and platen 10, described valve rod 7 upper end is provided with the nut 12 of screw-thread fit, namely epithelium 6 clamps by platen 10 and projection 11 by tightening nut 12, realize being fixedly connected with of valve rod 7 and epithelium 6, the look nut 13 be connected with bonnet 5 inner thread is provided with in described bonnet 5, pressure adjusting spring 14 is provided with between described look nut 13 and platen 10, described bottom flange 4 is provided with axle sleeve 15 with valve body 3 joint, described axle sleeve 15 is provided with two vents 23, described valve rod 7 lower end is stretched in valve body 3 by axle sleeve 15, described valve rod 7 lower end is connected with flap 8 by pin 22, gap is provided with between pin-and-hole on described pin 22 and flap, gap is provided with between described valve rod 7 lower surface and flap 8 upper surface, the valve port 16 coordinated with flap 8 is provided with in described valve body 3, described flap 8 is provided with the second seal ring 17, described second seal ring 17 is between flap 8 and valve port 16, described axle sleeve 15 is provided with the vent 17 being communicated with valve body 3 and bottom flange 4, described bonnet 5 upper end is provided with the top cover labyrinth 18 be connected with bonnet 5 inner thread, described valve body 3 also has clean-up port 19, described clean-up port 19 is provided with lower sealing cover 20, described lower sealing cover 20 is provided with the 3rd seal ring 21.
When the present invention works, gas enters valve body from suction port, the vent of warp beam sleeve enters in bottom flange again, epithelium is upwards heaved by the gas entered in bottom flange, when the air pressure at suction port place reaches predefined value, epithelium is upwards heaved, compression pressure adjusting spring, flap with ovable valve stem lower end departs from valve port, and gas is discharged from air outlet by valve port.Inlet pressure reduces, and under the setting pressure of pressure adjusting spring, epithelium resets, and flap is again by sealing valve port.Sell self regulating valve lobe and sealing valve port gap when gap between pin-and-hole and the gap of valve rod lower surface and flap upper surface ensure that depressed stem, adequate closure both making, ensure that the sealing of flap and valve port.Described axle sleeve has leading role, flap can be made accurately to aim at valve port, enhance the sealing between flap and valve port, the present invention by rotating look nut adjustment pressure adjusting spring, can set diffusion valve pressure predefined value with this, simply, convenient and accurate, this diffusion valve arranges by many places the sealing that seal ring ensure that diffusion valve, and vent established by described axle sleeve, serves the effect that bottom flange is communicated with valve body, all there is the function of blowdown described clean-up port, facilitates diffusion valve cleaning.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. diffusion valve, comprise the valve body being provided with suction port and air outlet, it is characterized in that: also comprise bottom flange, bonnet, epithelium, valve rod and flap, described bottom flange is fixedly connected with valve body upper end, described bottom flange is fixedly connected with bonnet and forms a cavity, described epithelium is fixed between bottom flange and bonnet, described epithelium is fixed by bottom flange and bonnet, described bottom flange and valve body joint are provided with axle sleeve, described axle sleeve has vent, described epithelium is fixedly connected with valve rod upper end, described epithelium upper surface is provided with platen, the look nut with bonnet screw-thread fit is provided with in described bonnet, pressure adjusting spring is provided with between described look nut and platen, described valve rod lower end is stretched in valve body by axle sleeve, described valve rod lower end is provided with pin, described flap is provided with pin-and-hole, described valve rod is connected with flap by pin and pin-and-hole, described pin and pin-and-hole inwall are provided with gap, the valve port coordinated with flap is provided with in described valve body, gap is provided with between described valve rod lower surface and flap upper surface.
2. diffusion valve according to claim 1, is characterized in that: be provided with an O type circle between described bottom flange and valve body, is provided with the 2nd O type circle between described flap and valve port.
3. diffusion valve according to claim 1, is characterized in that: described bonnet upper end is provided with top cover labyrinth.
4. diffusion valve according to claim 3, is characterized in that: described top cover labyrinth is connected with bonnet inner thread.
5. diffusion valve according to claim 1, is characterized in that: described valve body is provided with clean-up port, and described clean-up port place is provided with lower sealing cover.
6. diffusion valve according to claim 5, is characterized in that: be provided with the 3rd O type circle between described lower sealing cover and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843045.5A CN104534154A (en) | 2014-12-30 | 2014-12-30 | Blow-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843045.5A CN104534154A (en) | 2014-12-30 | 2014-12-30 | Blow-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104534154A true CN104534154A (en) | 2015-04-22 |
Family
ID=52849739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410843045.5A Pending CN104534154A (en) | 2014-12-30 | 2014-12-30 | Blow-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104534154A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205511U (en) * | 1985-12-20 | 1987-05-20 | 重庆江南仪表厂 | Tmj-312 household gas presure adjuster |
| CN2235540Y (en) * | 1995-08-14 | 1996-09-18 | 杨永祥 | Thin film type relief pressure valve |
| US5732929A (en) * | 1994-05-31 | 1998-03-31 | Technical Components, Pty. Ltd. | Anti-hammer pilot operated valve with tortuous flow path between inlet and pilot chamber |
| CN203413131U (en) * | 2013-07-18 | 2014-01-29 | 杭州良工阀门有限公司 | Self-operated nitrogen discharge valve |
| CN103542150A (en) * | 2013-10-30 | 2014-01-29 | 杭州春江阀门有限公司 | Pressure reducing valve with valve closing function |
| CN104006168A (en) * | 2014-06-11 | 2014-08-27 | 浙江达柏林阀门有限公司 | Stop valve |
| CN204512614U (en) * | 2014-12-30 | 2015-07-29 | 特瑞斯能源装备股份有限公司 | Diffusion valve |
-
2014
- 2014-12-30 CN CN201410843045.5A patent/CN104534154A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205511U (en) * | 1985-12-20 | 1987-05-20 | 重庆江南仪表厂 | Tmj-312 household gas presure adjuster |
| US5732929A (en) * | 1994-05-31 | 1998-03-31 | Technical Components, Pty. Ltd. | Anti-hammer pilot operated valve with tortuous flow path between inlet and pilot chamber |
| CN2235540Y (en) * | 1995-08-14 | 1996-09-18 | 杨永祥 | Thin film type relief pressure valve |
| CN203413131U (en) * | 2013-07-18 | 2014-01-29 | 杭州良工阀门有限公司 | Self-operated nitrogen discharge valve |
| CN103542150A (en) * | 2013-10-30 | 2014-01-29 | 杭州春江阀门有限公司 | Pressure reducing valve with valve closing function |
| CN104006168A (en) * | 2014-06-11 | 2014-08-27 | 浙江达柏林阀门有限公司 | Stop valve |
| CN204512614U (en) * | 2014-12-30 | 2015-07-29 | 特瑞斯能源装备股份有限公司 | Diffusion valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140327159A1 (en) | Soda machine with a safety fitting | |
| CN203823166U (en) | Safety valve | |
| CN204512614U (en) | Diffusion valve | |
| CN203549044U (en) | Large-flow breakaway coupling | |
| CN104534154A (en) | Blow-off valve | |
| CN208736613U (en) | A kind of nuclear power station-service diesel engine crankcase explosion-proof valve calibration tool | |
| WO2019019523A1 (en) | Safety valve having double-sealing function | |
| CN206545719U (en) | A kind of spring loaded safe valve that seal can be prevented sticky | |
| CN203549042U (en) | Safe pull-off valve | |
| CN205260943U (en) | Natural gas bottle valve | |
| CN103899807A (en) | Low-maintenance type pressure relief/holding valve with spring arranged externally | |
| CN211082954U (en) | Novel high pressure gauge stop valve | |
| CN204784686U (en) | A safe plug screw that is used for gas valve to detect and diffuse | |
| CN103644343A (en) | Safe emergency release coupler | |
| CN103542153B (en) | Overpressure prevention pressure-relief valve | |
| CN207161799U (en) | A kind of vacuum abolishes joint | |
| CN204164448U (en) | A kind of pressurized container uses emergency seat | |
| CN203757103U (en) | Safe automatically-closing gas valve | |
| CN203297696U (en) | Pressure reducer of gas burning device | |
| CN102777646A (en) | Vehicular compressed natural gas bottle flow-limiting valve | |
| CN204922143U (en) | Loose flange connects civilian dress formula voltage regulator | |
| CN205919931U (en) | Tank bottoms governing valve pressure testing device | |
| CN204328110U (en) | A kind of novel pressure modulating valve | |
| CN201779345U (en) | Gas pressure display valve and gas pressure display device with the same | |
| CN205065720U (en) | Multi -functional gas regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
|
| WD01 | Invention patent application deemed withdrawn after publication |