CN101788065B - Micro-pressure overflow valve with adjustable threshold - Google Patents
Micro-pressure overflow valve with adjustable threshold Download PDFInfo
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- CN101788065B CN101788065B CN2010101286525A CN201010128652A CN101788065B CN 101788065 B CN101788065 B CN 101788065B CN 2010101286525 A CN2010101286525 A CN 2010101286525A CN 201010128652 A CN201010128652 A CN 201010128652A CN 101788065 B CN101788065 B CN 101788065B
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- pressure
- push rod
- torsion spring
- bolt
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Abstract
The present invention discloses a micro-pressure overflow valve with adjustable threshold, comprising a film, a lever, a push rod guide sleeve, a pressure-adjusting rod guide sleeve, a torsional spring, left and right gaskets, a left and a right adjusting bolts, a valve cover and a valve body. The micro-pressure overflow valve can remove the gas with high pressure in a container; when the air pressure in the container is larger than the threshold, a film push rod is pushed out, in order to top out a pressure-reducing ejector rod for gas escaping. The invention is characterized that the micro-pressure overflow valve is suitable for air pressure regulation of low atmospheric pressure, the pressure difference is enlarged through a lever device, the sensitivity is high; the positions of the adjusting bolts at both sides of the valve body are adjusted to adjust the position of a pressure-adjusting rod to change the size of arm of force, thereby the threshold of air pressure in the container is changed; and the micro-pressure overflow valve is convenient and adjustable. The parts of the invention are all injection-molded parts, except the torsional spring. The valve body and the valve cover are connected through connection of a clamping table and a clamping groove; the micro-pressure overflow valve can be connected with the container directly by screw threads; and the installation is convenient. The micro-pressure overflow valve has low production cost, simple process, and adjustable threshold.
Description
Technical field
The present invention relates to a kind of relief valve, particularly a kind of micro-pressure overflow valve with adjustable threshold.
Background technique
Valve is through being usually used in liquid control invention, in metering pump, under this environment, often provides relief valve so that liquid or gas pressure release function to be provided when liquid or gas pressure surpass maximum value.
Traditional relief valve adopts spring more, change the threshold value of relief valve by the amount of deformation that changes spring, and its threshold value is bigger, is applicable to the overflow under the mesohigh situation, and susceptibility is low.The present invention then amplifies stressed by lever, directly the bolt of regulation valve body both sides is regulated the position of pressure regulation bar, thereby changes the arm of force length of lever, and then changes threshold value, makes the present invention be applicable to the overflow of hanging down under the normal pressure, and the susceptibility height.
Traditional relief valve adopts spring, and spring life is limited, easily loses efficacy.The present invention adopts leverage, and is durable in use, has certain precision to guarantee, is difficult for losing efficacy.
Traditional relief valve adopts metallic material, and through complicated machining means that numerous part processing assemblings is synthetic, cost is higher.The present invention adopts working of plastics entirely, valve body, and valve gap can be disposable injection molded, and technology is simple.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of micro-pressure overflow valve with adjustable threshold is provided.
Micro-pressure overflow valve with adjustable threshold comprises diaphragm, the diaphragm fixing lug boss, the push rod guide pin bushing, ram bolt, connecting-rod bolt, pressure regulation rod guidance cover, the push rod bolt, torsion spring, the torsion spring fixing column, sealing cover, seal boss, lower seal, bolt is regulated on a left side, left side pad, last seal ring, tinsel, the reduced pressure sealing circle, the right bolt of regulating, right pad, Ka Tai, draw-in groove, valve gap, valve body, last torsion spring Ka Tai, following torsion spring Ka Tai, vent, the diaphragm push rod, connecting rod, pressure regulation bar and decompression push rod; Diaphragm is affixed on the diaphragm fixing lug boss, the diaphragm push rod passes the push rod guide pin bushing, be connected by bolt with connecting rod, connecting rod passes pressure regulation rod guidance cover, connecting rod is connected by bolt with the decompression push rod, the decompression push rod adopts screw to be connected with sealing cover, the reduced pressure sealing circle is sealed vent, torsion spring is fixed on the torsion spring fixing column, be stuck between torsion spring Ka Tai and the following torsion spring card platform, the pressure regulation bar is connected in the pressure regulation rod guidance by bolt and puts, and bolt is regulated by a left side in pressure regulation bar two ends, left side pad, the right bolt of regulating, right spacers is on valve body, and last seal ring and lower seal are embedded in the valve body, valve body and valve gap pass through Ka Tai, draw-in groove is connected, last torsion spring Ka Tai and following torsion spring Ka Tai all adopt adhesive means, and respectively with valve body, the decompression push rod is connected.
Described diaphragm push rod, connecting rod, pressure regulation bar and decompression push rod are formed leverage.The right part of described diaphragm push rod is provided with tinsel.Be embedded with the reduced pressure sealing circle in the described sealing cover, half of reduced pressure sealing circle is embedded in the sealing cover, and second half is arranged in seal boss, seals vent.When sealing cover ejected, the reduced pressure sealing circle ejected the mountain with sealing cover, so that seal ring can be driven in seal boss.
Stretching or the length of the compression threshold value that change relief valve of traditional relief valve by Regulation spring, the overflow threshold value is big, is applicable to hyperbaric environment, and sensitivity is low, and spring is fragile, easily loses efficacy; The tradition relief valve adopts metallic material more, and not only weight is big, and the cost of production height, technological requirement height, mechanization cost height.And the present invention is stressed by the leverage amplification, and the overflow threshold value is low, is applicable to the minute-pressure overflow of normal low pressure, and is highly sensitive, utilizes mechanical device, durable difficult inefficacy, and adopt moulding, and cost is low, and technology is simple, easily realizes the mechanical automation production in enormous quantities.
Description of drawings
Fig. 1 is the sketch plan of micro-pressure overflow valve with adjustable threshold of the present invention;
Fig. 2 is the local figure in micro-pressure overflow valve with adjustable threshold diaphragm push rod of the present invention end;
Fig. 3 micro-pressure overflow valve with adjustable threshold decompression of the present invention push rod local figure in end;
The right local figure of bolt that regulates of Fig. 4 micro-pressure overflow valve with adjustable threshold of the present invention;
The local figure of Fig. 5 micro-pressure overflow valve with adjustable threshold torsion spring of the present invention;
Fig. 6 micro-pressure overflow valve with adjustable threshold decompression push rod of the present invention and sealing cover sectional view;
Among the figure, bolt 14, left pad 15 are regulated in diaphragm 1, diaphragm fixing lug boss 2, diaphragm push rod 31, connecting rod 32, pressure regulation bar 33, the push rod 34 that reduces pressure, push rod guide pin bushing 4, ram bolt 5, connecting-rod bolt 6, pressure regulation rod guidance cover 7, push rod bolt 8, torsion spring 9, torsion spring fixing column 10, sealing cover 11, seal boss 12, lower seal 13, a left side, upward seal ring 16, tinsel 17, reduced pressure sealing circle 18, the right side are regulated bolt 19, right pad 20, card platform 21, draw-in groove 22, valve gap 23, valve body 24, gone up torsion spring card platform 25, following torsion spring card platform 26, vent 27.
Embodiment
As shown in Figure 1, micro-pressure overflow valve with adjustable threshold comprises diaphragm 1, diaphragm fixing lug boss 2, push rod guide pin bushing 4, ram bolt 5, connecting-rod bolt 6, pressure regulation rod guidance cover 7, push rod bolt 8, torsion spring 9, torsion spring fixing column 10, sealing cover 11, seal boss 12, lower seal 13, bolt 14 is regulated on a left side, left side pad 15, last seal ring 16, tinsel 17, reduced pressure sealing circle 18, the right bolt 19 of regulating, right pad 20, card platform 21, draw-in groove 22, valve gap 23, valve body 24, last torsion spring card platform 25, following torsion spring card platform 26, vent 27, diaphragm push rod 31, connecting rod 32, pressure regulation bar 33 and decompression push rod 34; Diaphragm 1 is affixed on the diaphragm fixing lug boss 2, diaphragm push rod 31 passes push rod guide pin bushing 4, be connected by bolt 5 with connecting rod 32, connecting rod 32 passes pressure regulation rod guidance cover 7, connecting rod 32 is connected by bolt 6 with decompression push rod 34, decompression push rod 34 adopts screw to be connected with sealing cover 11, reduced pressure sealing circle 18 is sealed vent 27, torsion spring 9 is fixed on the torsion spring fixing column 10, be stuck between torsion spring card platform 25 and the following torsion spring card platform 26, pressure regulation bar 33 is connected on the pressure regulation rod guidance cover 7 by bolt 6, bolt 14 is regulated by a left side in pressure regulation bar 33 two ends, left side pad 15, the right bolt 19 of regulating, right pad 20 is fixed on the valve body 23, last seal ring 16 and lower seal 13 are embedded in the valve body 24, valve body 24 passes through card platform 21 with valve gap 23, draw-in groove 22 is connected, last torsion spring card platform 25 and following torsion spring card platform 26 all adopt adhesive means, and respectively with valve body 24, decompression push rod 34 is connected.Diaphragm push rod 31, connecting rod 32, pressure regulation bar 33 and decompression push rod 34 are formed leverage.
As shown in Figure 2, the right part of described diaphragm push rod 31 is provided with tinsel 17, to enlarge area of contact, promptly amplifies stressed.
As shown in Figure 3, whole invention is except that torsion spring is metalwork, and all the other are moulding.Valve body 24 is when injection moulding, and 2 air chambers A, B intermediate connection part and Ka Tai partly need side core-pulling.Remaining part all can be once injection molded.The screw thread of valve body 24 is to process after the injection moulding.
As shown in Figure 4, the both sides of groove all engrave identical scale on valve body, and when the pad of both sides was positioned at same position, expression pressure regulation bar 33 was a level.Regulate a left side and regulate bolt and the right position of regulating bolt, can change pressure regulation bar position, promptly change the length of lever arm of force, then can change the threshold value of relief valve.Torsion spring 9 provides the pretightening force of whole leverage, and torsion spring 9 is pressed on the seal boss decompression push rod 34, and torsion spring power makes diaphragm push rod 31 be close to diaphragm 1.
As shown in Figure 5, last torsion spring card platform 25 and following torsion spring card platform 26 are all with adhesive means, and respectively with valve body 24, decompression push rod 34 is connected.Torsion spring 9 is fixed between torsion spring card platform 25, the following torsion spring card platform 26.Four vent 27 rounded arrangements, opposite side is pushed down by the reduced pressure sealing circle.
As shown in Figure 6, decompression push rod 34 is connected for screw with sealing cover 11.Sealing cover 11 has inside groove, is embedded with reduced pressure sealing circle 18, and second half of seal ring 18 is arranged in seal boss 12, and seals vent 27.
Working procedure of the present invention is as follows:
Air chamber A communicates with air chamber B, gas is from entering air chamber A and air chamber B, when the air pressure in the air chamber A during greater than threshold value, gas pressure is in diaphragm 1, diaphragm 1 is ejected, and eject with it the tinsel 17 of contact, promote diaphragm push rod 31 thereupon, the effect of the lever of forming by diaphragm push rod 31, connecting rod 32, pressure regulation bar 33 and decompression push rod 34, decompression push rod 34 is ejected, thereby the sealing cover 11 of decompression push rod 34 ends is ejected from seal boss, drive reduced pressure sealing circle 18 and eject, the gas in the air chamber B is overflowed from vent 27.
Claims (3)
1. a micro-pressure overflow valve with adjustable threshold is characterized in that comprising diaphragm (1), diaphragm fixing lug boss (2), push rod guide pin bushing (4), ram bolt (5), connecting-rod bolt (6), pressure regulation rod guidance cover (7), push rod bolt (8), torsion spring (9), torsion spring fixing column (10), sealing cover (11), seal boss (12), lower seal (13), bolt (14) is regulated on a left side, left side pad (15), last seal ring (16), tinsel (17), reduced pressure sealing circle (18), the right bolt (19) of regulating, right pad (20), Ka Tai (21), draw-in groove (22), valve gap (23), valve body (24), last torsion spring Ka Tai (25), following torsion spring Ka Tai (26), vent (27), diaphragm push rod (31), connecting rod (32), pressure regulation bar (33) and decompression push rod (34); Diaphragm (1) is affixed on the diaphragm fixing lug boss (2), diaphragm push rod (31) passes push rod guide pin bushing (4), be connected by ram bolt (5) with connecting rod (32), connecting rod (32) passes pressure regulation rod guidance cover (7), connecting rod (32) is connected by push rod bolt (8) with decompression push rod (34), decompression push rod (34) adopts screw to be connected with sealing cover (11), seal boss (12) is provided with vent (27), sealing cover (11) has inside groove, be embedded with reduced pressure sealing circle (18), second half of reduced pressure sealing circle (18) is arranged in seal boss (12), seal vent (27), torsion spring (9) is fixed on the torsion spring fixing column (10), be stuck between torsion spring Ka Tai (25) and the following torsion spring Ka Tai (26), pressure regulation bar (33) is connected on the pressure regulation rod guidance cover (7) by connecting-rod bolt (6), bolt (14) is regulated by a left side in pressure regulation bar (33) two ends, left side pad (15), the right bolt (19) of regulating, right pad (20) is fixed on the valve body (23), last seal ring (16) and lower seal (13) are embedded in the valve body (24), valve body (24) passes through Ka Tai (21) with valve gap (23), draw-in groove (22) is connected, last torsion spring Ka Tai (25) and following torsion spring Ka Tai (26) all adopt adhesive means, with valve body (24), decompression push rod (34) is connected respectively.
2. a kind of micro-pressure overflow valve with adjustable threshold according to claim 1 is characterized in that described diaphragm push rod (31), connecting rod (32), pressure regulation bar (33) and decompression push rod (34) composition leverage.
3. a kind of micro-pressure overflow valve with adjustable threshold according to claim 1 is characterized in that the top of described diaphragm push rod (31) is provided with tinsel (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101286525A CN101788065B (en) | 2010-03-22 | 2010-03-22 | Micro-pressure overflow valve with adjustable threshold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101286525A CN101788065B (en) | 2010-03-22 | 2010-03-22 | Micro-pressure overflow valve with adjustable threshold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101788065A CN101788065A (en) | 2010-07-28 |
| CN101788065B true CN101788065B (en) | 2011-07-20 |
Family
ID=42531393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101286525A Expired - Fee Related CN101788065B (en) | 2010-03-22 | 2010-03-22 | Micro-pressure overflow valve with adjustable threshold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101788065B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223821B (en) * | 2017-12-14 | 2019-11-08 | 河南航天液压气动技术有限公司 | Pressure changeable direct-acting overflow valve |
| CN112550677B (en) * | 2020-12-11 | 2022-08-30 | 兰州飞行控制有限责任公司 | Structure and method for adjusting starting preload of torsional artificial sensory force |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085009U (en) * | 1989-11-21 | 1991-09-18 | 乌鲁木齐市石化总厂天珠工贸实业开发公司 | Decompression valve |
| CN2648207Y (en) * | 2003-04-23 | 2004-10-13 | 上海美浩电器有限公司 | Automatic on-off low-pressure pressure retaining relief valve for high-pressure washing machine |
| CN2632439Y (en) * | 2003-06-12 | 2004-08-11 | 黄卿赞 | Changing-over pressure regulater |
| DE102006050929B3 (en) * | 2006-10-28 | 2007-11-08 | Thomas Magnete Gmbh | Electromagnetic pressure limit valve for hydraulic/pneumatic systems, with nominal pressure switching, has two springs giving two nominal pressure stages in a single valve unit |
-
2010
- 2010-03-22 CN CN2010101286525A patent/CN101788065B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101788065A (en) | 2010-07-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Shugen Inventor after: Weng Guochong Inventor after: Lai Xiahong Inventor after: Du Chundi Inventor after: Zhang Guogeng Inventor after: Liu Ronghui Inventor before: Hu Shugen Inventor before: Weng Guochong Inventor before: Lai Xiahong Inventor before: Du Chundi Inventor before: Zhang Guogeng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HU SHUGEN WENG GUOCHONG LAI XIAHONG ZHU CHUNDI ZHANG GUOGENG TO: HU SHUGENWENG GUOCHONG LAI XIAHONG ZHU CHUNDI ZHANG GUOGENG LIU RONGHUI |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20130322 |