CN201748007U - Diaphragm-type pressure relief valve - Google Patents
Diaphragm-type pressure relief valve Download PDFInfo
- Publication number
- CN201748007U CN201748007U CN2010205028284U CN201020502828U CN201748007U CN 201748007 U CN201748007 U CN 201748007U CN 2010205028284 U CN2010205028284 U CN 2010205028284U CN 201020502828 U CN201020502828 U CN 201020502828U CN 201748007 U CN201748007 U CN 201748007U
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- spool
- pressure
- diaphragm
- valve body
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- Expired - Lifetime
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Abstract
The utility model relates to a diaphragm-type pressure relief valve. A diaphragm chamber and a spool chamber which are communicated with each other are coaxially arranged at the upper end and the lower end of a valve body. A tower-shaped large cover is fixedly arranged at the upper part of the valve body. A diaphragm which closes the diaphragm chamber is arranged between the valve body and the matching surface of the tower-shaped large cover in a pressing way. A pressure adjusting spring which can downwards eject against the diaphragm is arranged at the upper part of the diaphragm. A spool is arranged in the spool chamber. The upper part of the spool ejects against the lower surface of the diaphragm. The lower part of the spool is slideably inserted in the spool guide hole of an end cover which is arranged on the valve body in a screwing way. A pre-loading spring which upwards pushes the spool is sheathed at the lower part of the spool. The sealing surface of the middle part of the spool and the valve seat of the valve body form a valve seal. A high-pressure inlet and a low-pressure outlet are respectively arranged on the two sides of the valve body. The high-pressure inlet is communicated with the spool chamber below a sealing end surface. The low-pressure chamber is communicated with the spool chamber and the diaphragm chamber above the sealing end surface. A sealing ring which seals the spool guide hole is sheathed on the spool. A pressure relief passage which is communicated with the low-pressure outlet and the spool guide hole is arranged in the spool.
Description
Technical field
The utility model relates to a kind of reduction valve that is used on the pneumatic circuit, relates in particular to a kind of diaphragm type reduction valve.
Background technique
Application number is that 92222522.2 Chinese patent specification discloses a kind of gas piping twin-stage reduction valve, this twin-stage reduction valve is made up of a diaphragm type secondary gas pipeline decompressor and a piston type one-level gas piping decompressor, its diaphragm type decompressor of living comprises valve body, the bottom of valve body is provided with spool chamber, slidable fit has T shape guiding valve in the spool chamber, slide and be plugged in the spool pilot hole of end cap upper end setting in the lower end of T shape guiding valve, being set with an end on the T shape guiding valve cooperates with T shape guiding valve roof pressure, the loaded spring of the other end roof pressure on end cap, end cap is screwed onto the bottom of valve body, the valve seat movable sealing that is provided with on the upper end portion of T spool and the valve body cooperates and passes valve seat, the both sides of valve body are respectively arranged with high-pressure outlet and low tension outlet, wherein high-pressure outlet is communicated with spool chamber, the top of valve body and the top of valve seat are provided with low-pressure cavity, low tension outlet is communicated with low-pressure cavity, the top of low-pressure cavity is provided with diaphragm, the lower end surface of diaphragm is pressed on the upper-end surface of valve body, the upper end of diaphragm and the end face compression fit that is fixed on the big lid of turriform on the valve body, be provided with pressure adjusting spring in the inner chamber of the big lid of turriform, the lower end roof pressure of pressure adjusting spring is on the upper-end surface of diaphragm, the upper end of pressure adjusting spring be screwed in the pressure regulation nut roof pressure that turriform covers end greatly and cooperate, T shape guiding valve passes the upper tip of valve seat and the lower surface of diaphragm is fixed, and passes through the movable sealing conducting between T shape guiding valve and the valve seat between low-pressure cavity and the high-pressure inlet.For this diaphragm type decompressor can be worked, be Spielpassung between the lower end of T shape guiding valve and the spool pilot hole, the high-pressure inlet by this interstitial membrane chip depressor communicates with the spool pilot hole.This diaphragm type decompressor is when work, pressurized gas will be full of spool chamber and can be full of the following spool pilot hole of the tail end of T-valve, like this, pressurized gas will act on step surface, the conical surface at middle part and the end face of afterbody of T-valve upper end, the upward pressure that is subjected to of T-valve will be very big like this, adds the elastic force effect of loaded spring, and T-valve will tightly be attached on the valve seat, when the decrement of regulating pressure adjusting spring, so that will be very difficult when valve port is opened.For valve port is opened, relief spring will provide very big power to diaphragm, and in a single day valve port opens the effect that the upper-end surface of back T-valve also can be subjected to pressurized gas, this will make the open amount of valve port increase, in order well to realize effect of easing stress, sometimes also need relief spring is adjusted back so that reduce the open amount of valve port, this just makes the adjustment work of relief spring become very loaded down with trivial details.
Summary of the invention
The purpose of this utility model is to provide a kind of diaphragm type reduction valve, makes valve port open problem very difficult when big to solve stressed the causing more greatly in the decrement of regulating pressure adjusting spring of pressure adjusting spring in the prior art.
For achieving the above object, the utility model adopts following technological scheme: a kind of diaphragm type reduction valve, comprise valve body, the two ends up and down of valve body are coaxially arranged with the diaphragm chamber and the spool chamber of connection, the top of valve body is set with the big lid of turriform, press the diaphragm that is provided with the diaphragm chamber sealing between the fitting surface of valve body and the big lid of turriform, be provided with the lower end roof pressure in the inner chamber of the big lid of turriform on diaphragm upper surface, the upper end roof pressure is arranged on pressure adjusting spring on the look nut that turriform covers end greatly in rotation, be provided with spool in the spool chamber, diaphragm chamber and roof pressure are stretched on the lower surface of diaphragm in the top of spool, the bottom of valve body is installed with the end cap with the spool chamber sealing, the top of end cap is provided with the spool pilot hole, slide and be plugged in the spool pilot hole in the bottom of spool, the bottom of spool is set with the loaded spring that upwards pushes spool, the middle part of spool has sealing surface, the corresponding position of valve body has the valve seat that forms the valve sealing with the sealing end face, the both sides of valve body are respectively arranged with high-pressure inlet and low tension outlet, the following spool chamber of high-pressure inlet and seal face is communicated with, above spool chamber and the diaphragm chamber of low-pressure cavity and seal face is communicated with, described valve core upper sleeve is equipped with the seal ring with the sealing of spool pilot hole, is provided with the pressure release passage that is communicated with low tension outlet and spool pilot hole in the spool.
Described look nut structure comprises that rotation is arranged on the look nut that turriform covers the end greatly, the bottom of look nut is wholely set the double-screw bolt that stretches in the big cover cavity of turriform, be installed with the screw thread catch by screw thread on the double-screw bolt, the upper end roof pressure of described pressure adjusting spring is on the lower surface of screw thread catch, and the screw thread catch slides only to revolve with the inner chamber of the big lid of turriform and cooperates.
The sidewall of described valve body is provided with the outlet pressure test hole, and the inner of outlet pressure test hole is communicated with low tension outlet, and outer section sealing of outlet pressure test hole is installed with the exit seal plug with the shutoff of outlet pressure test hole.
The sidewall of described valve body is provided with the inlet pressure test hole, and the inner of inlet pressure test hole is communicated with high-pressure inlet, and outer section sealing of inlet pressure test hole is installed with the inlet seal plug with the shutoff of inlet pressure test hole.
Valve core upper sleeve of the present utility model is equipped with the seal ring with the sealing of the hole wall of spool pilot hole, high-pressure medium from high-pressure inlet can not enter the spool pilot hole, and be provided with the pressure release passage that is communicated with low tension outlet and spool pilot hole in the spool, can be full of the spool pilot hole by this pressure release passage from the low piezodielectric of low tension outlet, the pressure that is subjected to of the lower end surface of spool reduces greatly than prior art so, the pressure that pressure adjusting spring is subjected to also can reduce, be easy to regulate pressure adjusting spring, can carry out the adjusting of valve port size easily.
Valve body of the present utility model is provided with the outlet pressure test hole that is communicated with low tension outlet, can test the pressure of low tension outlet by this outlet pressure test hole, when not testing by the exit seal plug with this outlet pressure test hole shutoff, not only pressure measurement is convenient but also do not influence the performance of reduction valve.
Valve body of the present utility model is provided with the inlet pressure test hole that is communicated with high-pressure inlet, by this inlet pressure test hole can the testing high voltage import pressure, when not testing by the inlet seal plug with this inlet pressure test hole shutoff, not only pressure measurement is convenient but also do not influence the performance of reduction valve.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation body figure;
Fig. 2 is the sectional view at A-A place among Fig. 1.
Embodiment
A kind of embodiment of diaphragm type reduction valve, at Fig. 1, among Fig. 2, this diaphragm type decompression comprises valve body 6, the upper end of valve body 6 is provided with diaphragm chamber, the lower end is provided with spool chamber, the top of diaphragm chamber has the fixedly step end face towards the upper end, fixing being provided with screw thread and being bolted with the big lid 4 of turriform of above flared part on the step end face by screw thread, the lower end surface of the big lid 4 of turriform cooperates with fixing step end face, the top of diaphragm chamber is provided with the diaphragm 16 with diaphragm chamber sealing, and the periphery of diaphragm 16 is pressed abd fixed between the lower end surface of the fixedly step end face of spool and the big lid of turriform.Be provided with pressure adjusting spring 5 in the inner chamber of the big lid 4 of turriform, the lower end roof pressure of pressure adjusting spring 5 is on the upper surface of diaphragm 16, the upper-end surface roof pressure of pressure adjusting spring 5 is on the look nut structure, the look nut structure comprises rotates the look nut 2 that is arranged on the big lid of turriform 4 upper end portions, look nut 2 can rotate with respect to the big lid 4 of turriform, look nut 2 be wholely set double-screw bolt 17, be installed with screw thread catch 3 by screw thread on the double-screw bolt 17, the upper end roof pressure of the lower surface of screw thread catch 3 and pressure adjusting spring, screw thread catch 3 slides only to revolve with the inner chamber of the big lid 4 of turriform and cooperates, when rotating look nut 2, double-screw bolt 17 rotates thereupon, because screw thread catch 3 can not rotate with respect to the big lid 4 of turriform, the double-screw bolt 17 of rotation will drive screw thread catch 3 and move up and down with respect to the big lid 4 of turriform, thereby regulates the decrement of pressure adjusting spring 5.The regulated quantity of this regulator depends on the reach of double-screw bolt 17, and its regulated quantity can be very big.The upper end snail of the big lid 4 of turriform is connected to look nut 2 is covered the protective housing 1 of getting up.The lower end of valve body 6 is provided with the spool chamber with the diaphragm chamber coaxial communication, is provided with spool 18 in the spool chamber, and diaphragm chamber and roof pressure are stretched on the lower surface of diaphragm 16 in the top of spool 18, is connected by the spherical joint bearing hinge connection between spool 18 and the diaphragm 16.The bottom of valve body 6 is installed with the end cap 11 that spool chamber is sealed by screw thread, the top of end cap 11 is provided with spool pilot hole 10, slide and be plugged in the spool pilot hole 10 in the bottom of spool 18, be set in seal ring 9 on the bottom of spool and the cooperation section that the spool pilot hole cooperates, be sealed and matched between the hole wall of seal ring 9 and spool pilot hole 10.The lower end suit loaded spring 19 of spool 18, the upper end roof pressure of loaded spring 19 be provided with on the spool 18 on the step surface of lower end, the lower end roof pressure of loaded spring 19 is on the upper-end surface of end cap 11.The intermediate portion of spool 18 is provided with the sealing surface 13 towards the upper end, and the corresponding position of valve body 6 is provided with the valve seat 7 with sealing surface 13 movable sealings, has the soft seal layer of vulcanized rubber material on the sealing surface 13.One side of valve body 6 is provided with high-pressure inlet 8, the opposite side of valve body 6 is provided with low tension outlet 14, high-pressure inlet 8 is communicated with the spool chamber of seal face below 13, and low tension outlet 14 directly is communicated with the spool chamber of seal face more than 13, and low tension outlet 14 also is communicated with diaphragm chamber by low-pressure channel 15.Be provided with inlet pressure test hole 21 and the outlet pressure test hole 20 that lays respectively at valve body 6 opposite sides with place, high-pressure inlet 8 plane vertical on the valve body 6 with the plane at low tension outlet 14 places, inlet pressure test hole 21 is communicated with high-pressure inlet 8, and outlet pressure test hole 20 is communicated with low tension outlet 14.Outer section of outlet pressure test hole 20 is installed with exit seal plug 22, exit seal plug 22 is provided with seal ring with the fitting surface of valve body 6, outer section of inlet pressure test hole 21 is installed with inlet seal plug 23, and inlet seal plug 23 is provided with seal ring with the fitting surface of valve body 6.Be provided with pressure release passage 12 in the spool 18, pressure release passage 12 is inwardly extended axially to changing into the radial passage after sealing surface is more than 13 and extending to the outer circumferential face of spool 18 by the lower end surface of spool, thereby the pressure release passage of low tension outlet with the spool pilot hole is communicated with, and the low piezodielectric of low tension outlet is introduced in the spool pilot hole in the future.
The look nut structure of present embodiment is knockdown, also can only be provided with one and be assemblied in the nut that turriform covers end greatly by threads turn, the lower end surface of nut directly cooperates with the upper-end surface roof pressure of pressure adjusting spring, thereby regulates the pressure of the relative position adjustment pressure adjusting spring between look nut and the big lid of turriform by the rotation look nut.
The pressing diaphragm of present embodiment is located at the lower end surface and fixedly between the step end face of spool of the big lid of turriform, the periphery of the big lid of turriform has screw thread, have in the diaphragm chamber of lower end precession spool of the big lid of turriform of screw thread, also can on the inner chamber side face of the big lid of turriform, internal thread be set, in the inner chamber with the big lid of upper tip precession turriform of spool, so just pressing diaphragm need be located between the step surface that is provided with on the upper-end surface of spool and the big cover cavity of turriform, or the fixedly convex edge that protrudes from the big lid periphery of turriform is set on the lower end surface of the big lid of turriform, the same cooperation convex edge that protrudes from the spool periphery that on the upper-end surface of spool, also is provided with, the time allow fixedly convex edge and cooperate the convex edge to cooperate and use screw fixedly convex edge and cooperation convex edge to be fixed together in assembling, simultaneously pressing diaphragm is located between the upper-end surface of the lower end surface of the big lid of turriform and spool.
Claims (5)
1. diaphragm type reduction valve, comprise valve body, the two ends up and down of valve body are coaxially arranged with the diaphragm chamber and the spool chamber of connection, the top of valve body is set with the big lid of turriform, press the diaphragm that is provided with the diaphragm chamber sealing between the fitting surface of valve body and the big lid of turriform, be provided with the lower end roof pressure in the inner chamber of the big lid of turriform on diaphragm upper surface, the upper end roof pressure is arranged on the structural pressure adjusting spring of look nut that turriform covers end greatly in rotation, be provided with spool in the spool chamber, diaphragm chamber and roof pressure are stretched on the lower surface of diaphragm in the top of spool, the bottom of valve body is installed with the end cap with the spool chamber sealing, the top of end cap is provided with the spool pilot hole, slide and be plugged in the spool pilot hole in the bottom of spool, the bottom of spool is set with the loaded spring that upwards pushes spool, the middle part of spool has sealing surface, the corresponding position of valve body has the valve seat that forms the valve sealing with the sealing end face, the both sides of valve body are respectively arranged with high-pressure inlet and low tension outlet, the following spool chamber of high-pressure inlet and seal face is communicated with, above spool chamber and the diaphragm chamber of low-pressure cavity and seal face is communicated with, it is characterized in that: described valve core upper sleeve is equipped with the seal ring with the sealing of spool pilot hole, is provided with the pressure release passage that is communicated with low tension outlet and spool pilot hole in the spool.
2. diaphragm type reduction valve according to claim 1, it is characterized in that: described look nut structure comprises that rotation is arranged on the look nut that turriform covers the end greatly, the bottom of look nut is wholely set the double-screw bolt that stretches in the big cover cavity of turriform, be installed with the screw thread catch by screw thread on the double-screw bolt, the upper end roof pressure of described pressure adjusting spring is on the lower surface of screw thread catch, and the screw thread catch slides only to revolve with the inner chamber of the big lid of turriform and cooperates.
3. diaphragm type reduction valve according to claim 1 and 2, it is characterized in that: the sidewall of described valve body is provided with the outlet pressure test hole, the inner of outlet pressure test hole is communicated with low tension outlet, and outer section sealing of outlet pressure test hole is installed with the exit seal plug with the shutoff of outlet pressure test hole.
4. diaphragm type reduction valve according to claim 1 and 2, it is characterized in that: the sidewall of described valve body is provided with the inlet pressure test hole, the inner of inlet pressure test hole is communicated with high-pressure inlet, and outer section sealing of inlet pressure test hole is installed with the inlet seal plug with the shutoff of inlet pressure test hole.
5. diaphragm type reduction valve according to claim 3, it is characterized in that: the sidewall of described valve body is provided with the inlet pressure test hole, the inner of inlet pressure test hole is communicated with high-pressure inlet, and outer section sealing of inlet pressure test hole is installed with the inlet seal plug with the shutoff of inlet pressure test hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205028284U CN201748007U (en) | 2010-08-24 | 2010-08-24 | Diaphragm-type pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205028284U CN201748007U (en) | 2010-08-24 | 2010-08-24 | Diaphragm-type pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201748007U true CN201748007U (en) | 2011-02-16 |
Family
ID=43582685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205028284U Expired - Lifetime CN201748007U (en) | 2010-08-24 | 2010-08-24 | Diaphragm-type pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201748007U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943922A (en) * | 2012-10-24 | 2013-02-27 | 河南航天液压气动技术有限公司 | Pressure reducing valve |
| CN103672018A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve of seal structure and arranged between diaphragm member and valve element |
| CN103672080A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve with resetting device |
| CN103925400A (en) * | 2014-05-07 | 2014-07-16 | 西安交通大学 | Diaphragm-type pneumatic proportional pressure reducing valve of ball screw driven by servo motor directly |
| CN104455595A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Air conditioner and refrigerant pipe and unloading valve thereof |
| CN104948791A (en) * | 2015-05-14 | 2015-09-30 | 上海申吉仪表有限公司 | Stainless steel pressure control valve |
| CN105909845A (en) * | 2016-05-26 | 2016-08-31 | 宁波新佳行自动化工业有限公司 | Novel pressure adjusting valve |
| CN106763943A (en) * | 2016-11-18 | 2017-05-31 | 上海空间推进研究所 | Series redundancy formula pressure-regulating device |
| CN106838449A (en) * | 2017-03-07 | 2017-06-13 | 江阴职业技术学院 | A kind of Reduction of High Pressure Pneumatic valve |
| CN106894487A (en) * | 2017-04-20 | 2017-06-27 | 威迪亚（长泰）科技有限公司 | One kind rinses toilet lid |
| CN106931208A (en) * | 2017-04-20 | 2017-07-07 | 威迪亚（长泰）科技有限公司 | A kind of pressure reducing flow stable valve for being applied to rinse toilet lid |
| CN110645387A (en) * | 2019-08-27 | 2020-01-03 | 云南农业大学 | High-lift differential pressure unpowered pump air valve |
| CN111706684A (en) * | 2020-07-03 | 2020-09-25 | 清环拓达(苏州)环境科技有限公司 | Pneumatic control flushing valve |
| CN112664354A (en) * | 2020-12-10 | 2021-04-16 | 西安航天动力研究所 | Differential type isolation diaphragm valve and multi-propellant parallel liquid supply system |
| CN114198549A (en) * | 2021-11-20 | 2022-03-18 | 河南航天液压气动技术有限公司 | Pressure reducing valve adjusting assembly |
-
2010
- 2010-08-24 CN CN2010205028284U patent/CN201748007U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943922A (en) * | 2012-10-24 | 2013-02-27 | 河南航天液压气动技术有限公司 | Pressure reducing valve |
| CN104455595A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Air conditioner and refrigerant pipe and unloading valve thereof |
| CN103672018A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve of seal structure and arranged between diaphragm member and valve element |
| CN103672080A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve with resetting device |
| CN103925400A (en) * | 2014-05-07 | 2014-07-16 | 西安交通大学 | Diaphragm-type pneumatic proportional pressure reducing valve of ball screw driven by servo motor directly |
| CN103925400B (en) * | 2014-05-07 | 2016-08-24 | 西安交通大学 | A kind of servomotor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of ball-screw |
| CN104948791A (en) * | 2015-05-14 | 2015-09-30 | 上海申吉仪表有限公司 | Stainless steel pressure control valve |
| CN105909845A (en) * | 2016-05-26 | 2016-08-31 | 宁波新佳行自动化工业有限公司 | Novel pressure adjusting valve |
| CN106763943A (en) * | 2016-11-18 | 2017-05-31 | 上海空间推进研究所 | Series redundancy formula pressure-regulating device |
| CN106838449A (en) * | 2017-03-07 | 2017-06-13 | 江阴职业技术学院 | A kind of Reduction of High Pressure Pneumatic valve |
| CN106894487A (en) * | 2017-04-20 | 2017-06-27 | 威迪亚（长泰）科技有限公司 | One kind rinses toilet lid |
| CN106931208A (en) * | 2017-04-20 | 2017-07-07 | 威迪亚（长泰）科技有限公司 | A kind of pressure reducing flow stable valve for being applied to rinse toilet lid |
| CN106894487B (en) * | 2017-04-20 | 2023-03-07 | 长泰铱科科技有限公司 | Flushing toilet lid |
| CN110645387A (en) * | 2019-08-27 | 2020-01-03 | 云南农业大学 | High-lift differential pressure unpowered pump air valve |
| CN111706684A (en) * | 2020-07-03 | 2020-09-25 | 清环拓达(苏州)环境科技有限公司 | Pneumatic control flushing valve |
| CN112664354A (en) * | 2020-12-10 | 2021-04-16 | 西安航天动力研究所 | Differential type isolation diaphragm valve and multi-propellant parallel liquid supply system |
| CN114198549A (en) * | 2021-11-20 | 2022-03-18 | 河南航天液压气动技术有限公司 | Pressure reducing valve adjusting assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HE'NAN AEROSPACE HYDROPNEUMATIC TECHNOLOGY CO., LT Free format text: FORMER NAME: HENAN AEROSPACE PRESSURE ELEMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 451191 Zhengzhou, Henan, Longhu Aerospace Science and Technology Park, Xinzheng Patentee after: Henan Aerospace Hydraulic and Pneumatic Technology Co., Ltd. Address before: 451191 Zhengzhou, Henan, Longhu Aerospace Science and Technology Park, Xinzheng Patentee before: Henan Aerospace Pressure Element Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
|
| CX01 | Expiry of patent term |