CN103953769A - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN103953769A CN103953769A CN201410121331.0A CN201410121331A CN103953769A CN 103953769 A CN103953769 A CN 103953769A CN 201410121331 A CN201410121331 A CN 201410121331A CN 103953769 A CN103953769 A CN 103953769A
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- pressure
- dish
- valve
- bowl
- hole
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Classifications
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a pressure reducing valve, which comprises a valve body, a pressure regulating mechanism and two disc-shaped bowls with the same calibers, wherein a low-pressure cavity, an air inlet and an air outlet are arranged on the valve body, the air outlet is communicated with the low-pressure cavity, the two disc-shaped bowls are arranged in the low-pressure cavity, bowl openings of the two disc-shaped bowls are buckled together, the bottom of the first disc-shaped bowl comprises a through hole, the bottom of the second disc-shaped bowl is sealed, the bottom of the first disc-shaped bowl is seated at the air inlet part of the valve body, the through hole formed in the bottom is communicated with the air inlet, and the pressure of the pressure regulating mechanism acts on the bottom of the second disc-shaped bowl. The pressure reducing valve has the advantages that the pressure regulation through a diaphragm is not needed, and the service life of the pressure reducing valve is long.
Description
[technical field]
The present invention relates to barometric control unit, relate in particular to a kind of reduction valve.
[background technique]
The air of resuscitation apparatus gas cylinder output need to reduce pressure could be for breather, and the model utility that the patent No. is CN200320125387.0 discloses a kind of reduction valve, comprises valve body, pressure relief assembly, adjusting part; Wherein in valve body, be provided with valve pocket, air-inlet cavity, air-inlet cavity communicates by the through hole on valve interior wall with valve pocket; Pressure relief assembly is housed in air-inlet cavity, adjusting part is housed in valve pocket; Described pressure relief assembly comprises air inlet push rod, valve seat, little spring, apical axis, wherein air inlet push rod is connected with the air-inlet cavity of valve body lower end, cavity in the middle of air inlet push rod communicates with air-inlet cavity, in cavity, be provided with valve seat, valve seat bottom is stuck in little spring, valve seat top is connected with the apical axis lower end being through in through hole, and the upper end of apical axis withstands on the diaphragm unit of adjusting part, is provided with ventilation gap between apical axis and through hole.The reduction valve of this disclosure of the invention carries out pressure regulation by diaphragm, and diaphragm is easily damaged parts, easily damages, and the working life of reduction valve is shorter.
[summary of the invention]
The technical problem to be solved in the present invention is to provide the reduction valve of growing a kind of working life.。
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, a kind of reduction valve, comprise valve body, pressure adjustmenting mechanism and two dish bowls with bore, on valve body, comprise low-pressure cavity, suction port and air outlet, air outlet is communicated with low-pressure cavity, and two dish bowls are arranged in low-pressure cavity; The rim of a bowl of two dish bowls is buckled together, and the first dish-shaped bowl bottom comprises through hole, the second dish-shaped bowl bottom sealing; The bottom of the first dish bowl is seated in the suction port position of valve body, and the through hole of bottom is communicated with described suction port; The pressure-acting of pressure adjustmenting mechanism is in the bottom of the second dish bowl.
Above-described reduction valve, the chamber wall of the low-pressure cavity of valve body comprises annular groove, is inlaid with columnar cushion rubber in annular groove; Dish bowl is belleville spring, and when belleville spring axial compression diameter increases, the periphery of belleville spring contacts with the inwall of cylindrical shape cushion rubber.
Above-described reduction valve, valve body comprises lower casing and upper cover, and described suction port is positioned at the bottom of lower casing, and pressure adjustmenting mechanism is arranged in upper cover.
Above-described reduction valve, lower casing comprises gas outlet valve and the housing of source of the gas, the opening on housing top is connected with upper cover; Gas outlet valve is fixed in the mounting hole of lower housing portion, the suction port that the air outlet hole of gas outlet valve is valve body.
Above-described reduction valve, gas outlet valve comprises spool, stage clip, valve body and connecting head, and the top of connecting head is fixed in the mounting hole of lower housing portion, and spool comprises valve core head, valve rod and flap from top to bottom successively; Connecting head comprises up big and down small shoulder hole, and valve body is arranged on the top of connecting head shoulder hole macropore; Valve body comprises endoporus, and the endoporus of valve core head and valve body is slidably matched, and valve rod is passed down through the endoporus of valve body; Stage clip is arranged in the macropore of connecting head shoulder hole, and lower end is supported by the bottom surface of shoulder hole macropore, and upper end withstands on flap, promotes the lower end of flap draught excluder pedestal endoporus; The middle part of valve core head comprises bead, and the bottom of the first dish bowl is seated in the bead of valve core head; Valve core head comprises vent, and described vent is communicated with cavity and the valve body endoporus of two dish bowls sealing.
Above-described reduction valve, pressure adjustmenting mechanism comprises pressure regulating screw, pressure adjusting spring, spring seat, sliding sleeve and seal ring, upper cover comprises coaxial tapped hole and cylindrical hole; Pressure regulating screw screws in tapped hole, and spring seat is withstood in lower end, and pressure adjusting spring is arranged between spring seat and sliding sleeve, and the bottom surface of sliding sleeve is by the bottom supporting of the second dish bowl; Sliding sleeve and cylindrical hole are slidably matched, and the gap between sliding sleeve and cylindrical hole is sealed by seal ring.
Above-described reduction valve, enter in two cavitys between dish bowl from the gas of source of the gas, the pressed gas in cavity overcomes pressure and two outside pressure of dish bowl of pressure adjusting spring, and the rim of a bowl of two dish bowls is separated, pressed gas enters low-pressure cavity, and discharges from air outlet hole; In the time that pressure in outer low-pressure cavity raises, when the pressure of pressure adjusting spring and two outside pressure sums of dish bowl are greater than the outside thrust of inside cavity air pressure, the rim of a bowl closure of two dish bowls, no longer to low-pressure cavity air feed, to maintain the stable gas pressure in low-pressure cavity.
Above-described reduction valve, the periphery of two dish bowls comprises crimping, the edge of the first dish bowl through hole comprises crimping.
The present invention does not need to carry out pressure regulation by diaphragm, the long service life of reduction valve.
[brief description of the drawings]
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the structural drawing of the embodiment of the present invention 1 reduction valve.
Fig. 2 is the structural drawing of the embodiment of the present invention 2 reduction valve.
Fig. 3 is the structural drawing of the embodiment of the present invention 2 gas cylinder gas outlet valves.
[embodiment]
The structure of the embodiment of the present invention 1 reduction valve as shown in Figure 1, comprises housing 1, upper cover 2, pressure adjustmenting mechanism and two dish bowls 3 and 4 with bore.
Housing 1 and upper cover 2 form valve body, and housing 1 and upper cover 2 are threaded, both connection part rubber sealings.
Housing 1 and upper cover 2 form in valve body has a low-pressure cavity A, upper cover 2 to have an air outlet hole 201, and air outlet hole 201 is communicated with low-pressure cavity A.
Two dish bowls 3 and 4 are arranged in low-pressure cavity A, and the rim of a bowl of two dish bowls 3 and 4 is buckled together.A through hole is arranged at the bottom of lower dish bowl 3, the bottom lock of upper dish bowl 4.The periphery of two dish bowls 3 and 4 has crimping, and the edge of dish bowl 3 through holes comprises crimping, can improve sealing.
Inlet hole 101 is positioned at the central authorities of the bottom of housing 1, a convex 102 is arranged at the bottom of housing 1, the bottom of lower dish bowl 3 is seated on convex 102, between the bottom of lower dish bowl 3 and convex 102, seal by rubber cushion 9, the through hole of lower dish bowl 3 bottoms is communicated with inlet hole 101, enters in two cavity B between dish bowl 3 and 4 from the gas of source of the gas.
Pressure adjustmenting mechanism is arranged on upper cover 2, comprises pressure regulating screw 10, pressure adjusting spring 11, spring seat 12, sliding sleeve 13 and seal ring 14 with handle, and there are coaxial tapped hole and cylindrical hole 202 in the central authorities of upper cover 2.Pressure regulating screw 10 screws in tapped hole, and spring seat 12 is withstood in lower end, and pressure adjusting spring 11 is arranged between spring seat 12 and sliding sleeve 13, and the bottom surface of sliding sleeve 13 is riveted by the bottom of upper dish bowl 4.
Between sliding sleeve 13 and cylindrical hole 202, be slidably matched, the gap between sliding sleeve 13 and cylindrical hole 202 is sealed by seal ring 14.
When the above embodiment of the present invention works, enter in two cavity B between dish bowl 3 and 4 from the gas of source of the gas, pressed gas overcomes the pressure of pressure adjusting spring 11 and the pressure of two dish bowl 3 and 4 outsides, two dish bowls 3 are separated with the rim of a bowl of 4, pressed gas enters low-pressure cavity A, and discharge from air outlet hole 201, when outside gas consumption less, when pressure in low-pressure cavity A raises, when the pressure sum of the pressure of pressure adjusting spring 11 and two dish bowl 3 and 4 outsides is greater than the outside thrust of cavity B air pressure inside, the rim of a bowl closure of two dish bowls 3 and 4, no longer to low-pressure cavity A air feed, can maintain air pressure in low-pressure cavity A constant.Can change the output pressure of low-pressure cavity A with the pressure that pressure regulating screw 10 changes pressure adjusting spring 11.
The structure of the embodiment of the present invention 2 reduction valve as shown in Figures 2 and 3, also comprises the gas outlet valve being connected with gas cylinder on embodiment 1 basis, and in addition, dish bowl 3 and 4 is belleville spring, under axial pressure effect, can deform.
Gas outlet valve comprises spool 7, stage clip 8, valve body 6 and connecting head 5.The top of connecting head 5 is fixed on by screw thread in the mounting hole of housing 1 bottom, and spool 7 comprises valve core head 701, valve rod 702 and flap 703 from top to bottom successively.
Connecting head 5 has a up big and down small shoulder hole, and valve body 6 is arranged on the top of connecting head 5 shoulder hole macropores 501.Valve body 6 has an endoporus 601, and valve core head 701 is slidably matched with the endoporus 601 of valve body 6, passes through rubber sealing between the two.Valve rod 702 is passed down through the endoporus 601 of valve body 6.
Stage clip 8 is arranged in the macropore 501 of connecting head 5 shoulder holes, and lower end is supported by the bottom surface of shoulder hole macropore 501, and upper end withstands on the step of flap 703, promotes the lower end of flap 703 draught excluder pedestal 6 endoporus 601.
Valve core head 701 have a bead 701a, it is upper that the bottom of lower dish bowl 3 is seated in the bead 701a of valve core head 701, the through hole of lower dish bowl 3 bottoms is enclosed within on the axle journal of bead 701a top, between the bottom of lower dish bowl 3 and bead 701a, seals by rubber cushion 9.In valve core head 701, have multiple axial vent 701b, vent 701b is communicated with two cavity B and valve body 6 endoporus 601 between dish bowl 3 and 4, is convenient to enter in cavity B from the gas of source of the gas.
Low-pressure cavity A in housing 1 is cylindrical shape, on the chamber wall of low-pressure cavity A, has a ring annular groove, is inlaid with columnar cushion rubber 15 in annular groove.In the time that belleville spring axial compression diameter increases, the periphery of belleville spring contacts with the inwall of columnar cushion rubber 15, realizes the further sealing to cavity B.In the time that belleville spring internal pressure strengthens, reduced, the periphery of belleville spring and columnar cushion rubber 15 disengage, and the gas of being convenient to discharge from cavity B flows into low-pressure cavity A.
Compared with embodiment 1, when in embodiment 2, dish bowl 3 and 4 is closed, between better tightness, the pressure of output is more stable; Compare and increased the gas outlet valve being connected with gas cylinder with embodiment 1, the main body of dismounting reduction valve, the gas in gas cylinder can not leak, and is also convenient to install inflator, to tonifying Qi in gas cylinder.
Claims (8)
1. a reduction valve, comprises valve body and pressure adjustmenting mechanism, comprises low-pressure cavity, suction port and air outlet on valve body, and air outlet is communicated with low-pressure cavity, it is characterized in that, comprises two dish bowls with bore, and two dish bowls are arranged in low-pressure cavity; The rim of a bowl of two dish bowls is buckled together, and the first dish-shaped bowl bottom comprises through hole, the second dish-shaped bowl bottom sealing; The bottom of the first dish bowl is seated in the suction port position of valve body, and the through hole of bottom is communicated with described suction port; The pressure-acting of pressure adjustmenting mechanism is in the bottom of the second dish bowl.
2. reduction valve according to claim 1, is characterized in that, the chamber wall of the low-pressure cavity of valve body comprises annular groove, is inlaid with columnar cushion rubber in annular groove; Dish bowl is belleville spring, and when belleville spring axial compression diameter increases, the periphery of belleville spring contacts with the inwall of cylindrical shape cushion rubber.
3. reduction valve according to claim 1, is characterized in that, valve body comprises lower casing and upper cover, and described suction port is positioned at the bottom of lower casing, and pressure adjustmenting mechanism is arranged in upper cover.
4. reduction valve according to claim 3, is characterized in that, lower casing comprises gas outlet valve and the housing of source of the gas, and the opening on housing top is connected with upper cover; Gas outlet valve is fixed in the mounting hole of lower housing portion, the suction port that the air outlet hole of gas outlet valve is valve body.
5. reduction valve according to claim 4, is characterized in that, gas outlet valve comprises spool, stage clip, valve body and connecting head, and the top of connecting head is fixed in the mounting hole of lower housing portion, and spool comprises valve core head, valve rod and flap from top to bottom successively; Connecting head comprises up big and down small shoulder hole, and valve body is arranged on the top of connecting head shoulder hole macropore; Valve body comprises endoporus, and the endoporus of valve core head and valve body is slidably matched, and valve rod is passed down through the endoporus of valve body; Stage clip is arranged in the macropore of connecting head shoulder hole, and lower end is supported by the bottom surface of shoulder hole macropore, and upper end withstands on flap, promotes the lower end of flap draught excluder pedestal endoporus; The middle part of valve core head comprises bead, and the bottom of the first dish bowl is seated in the bead of valve core head; Valve core head comprises vent, and described vent is communicated with cavity and the valve body endoporus of two dish bowls sealing.
6. reduction valve according to claim 3, is characterized in that, pressure adjustmenting mechanism comprises pressure regulating screw, pressure adjusting spring, spring seat, sliding sleeve and seal ring, and upper cover comprises coaxial tapped hole and cylindrical hole; Pressure regulating screw screws in tapped hole, and spring seat is withstood in lower end, and pressure adjusting spring is arranged between spring seat and sliding sleeve, and the bottom surface of sliding sleeve is by the bottom supporting of the second dish bowl; Sliding sleeve and cylindrical hole are slidably matched, and the gap between sliding sleeve and cylindrical hole is sealed by seal ring.
7. reduction valve according to claim 6, it is characterized in that, enter in two cavitys between dish bowl from the gas of source of the gas, pressed gas in cavity overcomes pressure and two outside pressure of dish bowl of pressure adjusting spring, the rim of a bowl of two dish bowls is separated, pressed gas enters low-pressure cavity, and discharges from air outlet hole; In the time that pressure in outer low-pressure cavity raises, when the pressure of pressure adjusting spring and two outside pressure sums of dish bowl are greater than the outside thrust of inside cavity air pressure, the rim of a bowl closure of two dish bowls, no longer to low-pressure cavity air feed, to maintain the stable gas pressure in low-pressure cavity.
8. reduction valve according to claim 1, is characterized in that, the periphery of two dish bowls comprises crimping, and the edge of the first dish bowl through hole comprises crimping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410121331.0A CN103953769B (en) | 2014-03-28 | 2014-03-28 | A kind of reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410121331.0A CN103953769B (en) | 2014-03-28 | 2014-03-28 | A kind of reduction valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953769A true CN103953769A (en) | 2014-07-30 |
| CN103953769B CN103953769B (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410121331.0A Expired - Fee Related CN103953769B (en) | 2014-03-28 | 2014-03-28 | A kind of reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103953769B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105031844A (en) * | 2015-08-12 | 2015-11-11 | 中国航空工业集团公司西安飞机设计研究所 | Safety oxygen release device for airplane |
| CN105605243A (en) * | 2016-04-01 | 2016-05-25 | 成都科盛石油科技有限公司 | Pressure-regulation pilot mechanism used in pneumatic system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108181A (en) * | 1984-11-13 | 1986-09-24 | 阿冯工业聚合物有限公司 | Valve for respirator |
| CN2679448Y (en) * | 2003-12-27 | 2005-02-16 | 中山市长青科技发展有限公司 | Relief valve |
| US20080135104A1 (en) * | 2006-12-08 | 2008-06-12 | Scott Lawrence Cooper | Fail-safe vacuum actuated valve for high pressure delivery systems |
| CN201273451Y (en) * | 2007-12-10 | 2009-07-15 | 普莱克斯技术有限公司 | System, gas cylinder, valve assembly and bellows component used for controlling pressurized fluid |
| CN102278504A (en) * | 2011-06-27 | 2011-12-14 | 上海阀门厂有限公司 | Atmosphere discharge valve |
| CN203757112U (en) * | 2014-03-28 | 2014-08-06 | 党新洲 | Pressure reducing valve |
-
2014
- 2014-03-28 CN CN201410121331.0A patent/CN103953769B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108181A (en) * | 1984-11-13 | 1986-09-24 | 阿冯工业聚合物有限公司 | Valve for respirator |
| CN2679448Y (en) * | 2003-12-27 | 2005-02-16 | 中山市长青科技发展有限公司 | Relief valve |
| US20080135104A1 (en) * | 2006-12-08 | 2008-06-12 | Scott Lawrence Cooper | Fail-safe vacuum actuated valve for high pressure delivery systems |
| CN201273451Y (en) * | 2007-12-10 | 2009-07-15 | 普莱克斯技术有限公司 | System, gas cylinder, valve assembly and bellows component used for controlling pressurized fluid |
| CN102278504A (en) * | 2011-06-27 | 2011-12-14 | 上海阀门厂有限公司 | Atmosphere discharge valve |
| CN203757112U (en) * | 2014-03-28 | 2014-08-06 | 党新洲 | Pressure reducing valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105031844A (en) * | 2015-08-12 | 2015-11-11 | 中国航空工业集团公司西安飞机设计研究所 | Safety oxygen release device for airplane |
| CN105031844B (en) * | 2015-08-12 | 2018-04-13 | 中国航空工业集团公司西安飞机设计研究所 | A kind of aircraft safety puts oxygen device |
| CN105605243A (en) * | 2016-04-01 | 2016-05-25 | 成都科盛石油科技有限公司 | Pressure-regulation pilot mechanism used in pneumatic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103953769B (en) | 2016-04-20 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |