CN2679448Y - Relief valve - Google Patents
Relief valve Download PDFInfo
- Publication number
- CN2679448Y CN2679448Y CN 200320125387 CN200320125387U CN2679448Y CN 2679448 Y CN2679448 Y CN 2679448Y CN 200320125387 CN200320125387 CN 200320125387 CN 200320125387 U CN200320125387 U CN 200320125387U CN 2679448 Y CN2679448 Y CN 2679448Y
- Authority
- CN
- China
- Prior art keywords
- valve
- cavity
- air
- spring
- valve seat
- 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 - Lifetime
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Abstract
The utility model discloses a relief valve, in particular to the relief valve of the liquefied gas cylinder. The technical point is that the utility model comprises a valve body, a pressure reducing assembly, and a regulating assembly. A valve cavity and an intake charge cavity are arranged in the valve body. The intake charge cavity is communicated with the valve cavity through the through holes on the inner wall of the valve body. The pressure reducing assembly is arranged in the intake charge cavity. The regulating assembly is arranged in the valve cavity. The pressure reducing assembly comprises an air intake post rod, a valve seat, a small spring, and a head shaft. The an air intake post rod is connected with the intake charge cavity at the lower end of the valve body. The cavity in the middle of the air intake post rod is communicated with the intake charge cavity. The valve seat is arranged in the cavity. The lower part of the valve seat is fastened in the small spring. The upper part of the valve seat is connected with the lower part of the head shaft threaded in the through holes. The upper part of the head shaft supports the diaphragm assembly of the regulating assembly. The aeration gap exists between the head shaft and the through holes. The utility model overcomes the insufficiency of the prior art and provides a relief valve with small processing difficulty and high safety performance.
Description
[technical field]
The utility model relates to a kind of reduction valve, specifically relates to the reduction valve that a kind of liquified petroleum gas cylinder is used.
[background technique]
The combustible gas that liquid gas is used as the cooking, manufacture hot water has brought many convenience for people's daily life, but must could directly be utilized by reduction valve by the gas that stores in the liquefied pot.The reduction valve of at present traditional lever-type structure has some inevitable hidden danger, and mainly show: 1. lever construction has a fixed support, and relative with the requirement of fulcrum relative height size strict to valve port, validity is very high, causes the difficulty in the production; 2. the lever open-ended is hooked by the hole, may get loose, and the power that fulcrum bears is quite big, if fulcrum do not have fixation may get loose yet, this all can cause the danger of not reducing pressure.
[model utility content]
The utility model has overcome the deficiencies in the prior art, and the reduction valve that a kind of difficulty of processing is little, Safety performance is high is provided.
In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposal:
A kind of reduction valve is characterized in that comprising valve body, pressure relief assembly, adjusting part; Wherein be provided with valve pocket, air-inlet cavity in valve body, air-inlet cavity communicates by the through hole on the 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 the air inlet push rod is connected with the air-inlet cavity of valve body lower end, cavity in the middle of the air inlet push rod communicates with air-inlet cavity, in cavity, be provided with valve seat, the valve seat bottom is stuck in the little spring, valve seat top is connected with apical axis lower end in being through through hole, and the upper end of apical axis withstands on the diaphragm unit of adjusting part, is provided with the ventilation slit between apical axis and through hole.
Aforesaid a kind of reduction valve, it is characterized in that adjusting part comprises loam cake, diaphragm unit, pressure adjusting spring, spring compressor, regulator bolts, wherein the loam cake of adjusting part is connected with the valve pocket of valve body upper end, simultaneously diaphragm is compressed, and in the upper end of diaphragm unit pressure adjusting spring is housed.
Aforesaid a kind of reduction valve is characterized in that described pressure adjusting spring is covered and located by spring compressor, and regulator bolts withstands spring compressor.
Owing to adopted technique scheme, the utlity model has such beneficial effect: 1. pair valve port relative height is less demanding, and the size of pressure can be regulated by controlling mechanism, thereby difficulty of processing is little; 2. apical axis and valve seat are formed the core, and this structure moves up and down along the axial direction of apical axis, and it is a kind of no fulcrum structure, and apical axis pushes up in pipeline and presses down, and the location is all arranged, and do not exist structure to get loose and cause accident, thereby the Safety performance height; 3. this reduction valve adopts and oppositely opens valve formula structure, and pressure adjusting spring will overcome the thrust of charge air flow to valve seat, and the bleed pressure of use is high more, and valve port is easy more closes, and has more strengthened Safety performance; 4. this valve formula structure of oppositely opening, when gas ran low, the delivery pressure in the valve pocket diminished, and gas diminishes to the pressure of diaphragm unit, promotes apical axis and valve seat under the effect of pressure adjusting spring, makes the ventilation slit bigger, and air-flow increases, thereby utilizes fully; 5. this reduction valve uses mechanical type to correct principle automatically, just can satisfy complicated decompression requirement, thereby simple in structure.
[description of drawings]
Fig. 1 is a sectional view of the present utility model.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
A kind of reduction valve comprises valve body 1, pressure relief assembly 2, adjusting part 3.Pressure relief assembly 2 is connected valve body 1 bottom, and adjusting part 3 is connected valve body 1 top.Pressurized gas go out the size of atmospheric pressure by pressure relief assembly 2 decompressions after the adjustment of adjusting part 3 can determine to reduce pressure.
Be provided with air outlet 4, valve pocket 5, air-inlet cavity 6 in the valve body 1, air-inlet cavity 6 communicates by the through hole on the valve interior wall 78 with valve pocket 5, and valve pocket 5 communicates with air outlet 4.
Pressure relief assembly 2 comprises air inlet push rod 9, valve seat 10, little spring 11, rubber cushion 12, apical axis 13.Air inlet push rod 9 is connected with valve body 1 lower end by the screw thread of air-inlet cavity 6, in the middle of the air inlet push rod 9 cavity 14 is arranged, cavity 14 communicates with air-inlet cavity 6, is provided with valve seat 10 in the cavity 14, valve seat 10 bottoms are stuck in the little spring 11, and valve seat 10 tops are connected with apical axis 13 lower ends in being through through hole 8.Valve seat 10 tops are provided with rubber cushion 12, form air inlet gap 22 between rubber cushion 12 and the through hole 8.Valve seat 10 can move up and down under little spring 11 and apical axis 13 effects, thus the size in control air inlet gap 22.
Adjusting part 3 comprises loam cake 15, diaphragm unit 16, pressure adjusting spring 17, spring compressor 18, regulator bolts 19.In the middle of the loam cake cavity 20 is arranged, be provided with diaphragm unit 16 in the cavity 20, loam cake 15 is connected with valve body 1 upper end by the screw thread on valve pocket 5 tops, and the diaphragm 21 with diaphragm unit 16 compresses simultaneously.Diaphragm unit 16 lower ends are withstood by apical axis 13, and diaphragm unit 16 upper ends are withstood by pressure adjusting spring 17.Pressure adjusting spring 17 is covered and is located by spring compressor 18, and regulator bolts 19 withstands spring compressor 18, regulates the length that regulator bolts 19 can be adjusted pressure adjusting spring 17 compressions.
Apical axis 13 is inserted in the through hole 8, and apical axis 13 matches with the shape of through hole 8, and a ventilation slit 23 is arranged between apical axis 13 and the through hole 8.
The working principle of reduction valve is such:
Gas is that the cavity 14 by air inlet push rod 9 enters relief valve body 1.When also not having gas to pass through in the relief valve body 1, because the power of pressure adjusting spring 17 is far longer than the power of little spring 11, under the effect of two power, pressure adjusting spring 17 compressing diaphragm units 16 and apical axis 13 move down, and apical axis 13 is linkage structures with valve seat 10 and rubber cushion 12, therefore rubber cushion 12 is away from through hole 8, and air-inlet cavity 6 is in open mode, and valve pocket 5 communicates with the cavity 14 of air inlet push rod 9.
When the cavity 14 of gas process air inlet push rod 9 flows into, because of air-inlet cavity 6 is in open mode, so gas enters reduction valve valve pocket 5 rapidly, and then gas pressure raises rapidly in the valve pocket 5, gas promotes diaphragm unit 16 and moves up, this moment, apical axis 13 was because of leaving diaphragm unit 16, the thrust of only bearing little spring 11, and apical axis 13 and valve seat 10 move up, air inlet gap 22 reduces, flow reduces simultaneously, and this moment, valve pocket 5 internal pressures reduced again, and diaphragm unit 16 promotes apical axis 13 again and moves down, air inlet gap 22 increases again, this moment, air-flow became big, and gas pressure raises again in the valve pocket 5, and gas promotes diaphragm unit 16 again and rises; Go round and begin again, constantly circulation reaches transient equiliblium like this, has guaranteed the constant of valve pocket 5 interior gas pressures, reaches the stable purpose of delivery pressure.
Regulator bolts 19 and spring compressor 18 and pressure adjusting spring 17, diaphragm unit 16 have been formed a pressure regulating mechanism.When regulator bolts 19 was regulated downwards, pressure adjusting spring 17 was compressed, and elastic force increases, and pressure adjusting spring 17 passes to the power increase of diaphragm unit 16 simultaneously.According to the above-mentioned working principle of this reduction valve, when the power of bearing when apical axis 13 increased, air inlet gap 22 also increased, and the air pressure in the valve pocket 5 also increase relatively, had also just reached the purpose of increase outlet pressure simultaneously; Otherwise, can reduce outlet pressure.
Claims (3)
1, a kind of reduction valve is characterized in that comprising valve body (1), pressure relief assembly (2), adjusting part (3); Wherein be provided with valve pocket (5), air-inlet cavity (6) in valve body (1), air-inlet cavity (6) communicates by the through hole (8) on the valve interior wall (7) with valve pocket (5); Pressure relief assembly (2) is housed in air-inlet cavity (6), adjusting part (3) is housed in valve pocket (5); Described pressure relief assembly (2) comprises air inlet push rod (9), valve seat (10), little spring (11), apical axis (13), wherein air inlet push rod (9) is connected with the air-inlet cavity (6) of valve body (1) lower end, cavity (14) in the middle of the air inlet push rod (9) communicates with air-inlet cavity (6), in cavity (14), be provided with valve seat (10), valve seat (10) bottom is stuck in the little spring (11), valve seat (10) top is connected with apical axis (13) lower end in being through through hole (8), and the upper end of apical axis (13) withstands on the diaphragm unit (16) of adjusting part (3), is provided with ventilation slit (23) between apical axis (13) and through hole (8).
2, a kind of reduction valve according to claim 1, it is characterized in that adjusting part (3) comprises loam cake (15), diaphragm unit (16), pressure adjusting spring (17), spring compressor (18), regulator bolts (19), wherein the loam cake (15) of adjusting part (3) is connected with the valve pocket (5) of valve body (1) upper end, simultaneously diaphragm (21) is compressed, pressure adjusting spring (17) is housed in the upper end of diaphragm unit (16).
3, a kind of reduction valve according to claim 2 is characterized in that described pressure adjusting spring (17) is covered and located by spring compressor (18), and regulator bolts (19) withstands spring compressor (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125387 CN2679448Y (en) | 2003-12-27 | 2003-12-27 | Relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125387 CN2679448Y (en) | 2003-12-27 | 2003-12-27 | Relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2679448Y true CN2679448Y (en) | 2005-02-16 |
Family
ID=34581335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320125387 Expired - Lifetime CN2679448Y (en) | 2003-12-27 | 2003-12-27 | Relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2679448Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953769A (en) * | 2014-03-28 | 2014-07-30 | 党新洲 | Pressure reducing valve |
-
2003
- 2003-12-27 CN CN 200320125387 patent/CN2679448Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953769A (en) * | 2014-03-28 | 2014-07-30 | 党新洲 | Pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG CHANT GROUP LIMITED Free format text: FORMER OWNER: CHANGQING SCI-TECH DEVELOPMENT CO., LTD., ZHONGSHAN Effective date: 20070914 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070914 Address after: 528415 cross section of Xiaolan Road, Zhongshan City, Guangdong Province Patentee after: Changqing (Group) Co., Ltd., Guangdong Address before: 528415 Guangdong Province, Zhongshan City Xiaolan Town Xiaolan section of Guang Zhu Lu Changqing group Patentee before: Changqing Sci-Tech Development Co., Ltd., Zhongshan |
|
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG CHANGQING ( GROUP ) CO., LTD. Free format text: FORMER OWNER: GUANGDONG CHANT GROUP LIMITED Effective date: 20081031 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081031 Address after: Cross section of Xiaolan Road, Guangdong City, Zhongshan Province, China: 528415 Patentee after: GUANGDONG CHANT GROUP INC. Address before: Cross section of Xiaolan Road, Guangdong City, Zhongshan Province, China: 528415 Patentee before: Changqing (Group) Co., Ltd., Guangdong |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131227 Granted publication date: 20050216 |