CN201731129U - Threshold-adjustable micro-pressure overflow valve - Google Patents
Threshold-adjustable micro-pressure overflow valve Download PDFInfo
- Publication number
- CN201731129U CN201731129U CN2010201364002U CN201020136400U CN201731129U CN 201731129 U CN201731129 U CN 201731129U CN 2010201364002 U CN2010201364002 U CN 2010201364002U CN 201020136400 U CN201020136400 U CN 201020136400U CN 201731129 U CN201731129 U CN 201731129U
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- pressure
- push rod
- torsion spring
- bolt
- valve
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Abstract
The utility model discloses a threshold-adjustable micro-pressure overflow valve, which comprises a diaphragm, a lever, a pusher guide sleeve, a pressure adjusting guide sleeve, a torsion spring, a left gasket, a right gasket, a left regulating bolt, a right regulating bolt, a valve cover and a valve body. Excessive pressure in a container can be released, and when pressure in the container is higher than a threshold value, a diaphragm pusher is pushed to eject a pressure reducing ejector rod out, thereby releasing air. The micro-pressure overflow valve is characterized in that the valve is applicable to low normal pressure adjustment, and pressure difference is amplified by aid of the lever device, so that the overflow valve is high in flexibility; and the arm of force can be changed by means of adjusting the position of a pressure adjusting rod through adjusting positions of the adjusting bolts on two sides of the valve body, thereby changing threshold of pressure in the container in an adjustable form conveniently. All the components except the torsion spring are injection molded parts, the valve body and the valve cover are in tongue and groove connection, and the overflow valve can be connected with the container via thread directly and realizes installation conveniently. Further, the micro-pressure overflow valve is low in production cost, simple in process and adjustable in threshold.
Description
Technical field
The utility model 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 utility model 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 utility model 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 utility model 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 utility model adopts working of plastics entirely, valve body, and valve gap can be disposable injection molded, and technology is simple.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and 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 utility model 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 the utility model micro-pressure overflow valve with adjustable threshold;
Fig. 2 is the local figure in the utility model micro-pressure overflow valve with adjustable threshold diaphragm push rod end;
Fig. 3 the utility model micro-pressure overflow valve with adjustable threshold decompression push rod local figure in end;
The right local figure of bolt that regulates of Fig. 4 the utility model micro-pressure overflow valve with adjustable threshold;
The local figure of Fig. 5 the utility model micro-pressure overflow valve with adjustable threshold torsion spring;
Fig. 6 the utility model micro-pressure overflow valve with adjustable threshold decompression push rod 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 utility model 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 (4)
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 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 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 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 right part of described diaphragm push rod (31) is provided with tinsel (17).
4. a kind of micro-pressure overflow valve with adjustable threshold according to claim 1 is characterized in that being embedded with reduced pressure sealing circle (18) in the described sealing cover (11), and second half of seal ring (18) is arranged in seal boss (12), seals vent (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201364002U CN201731129U (en) | 2010-03-22 | 2010-03-22 | Threshold-adjustable micro-pressure overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201364002U CN201731129U (en) | 2010-03-22 | 2010-03-22 | Threshold-adjustable micro-pressure overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201731129U true CN201731129U (en) | 2011-02-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201364002U Expired - Fee Related CN201731129U (en) | 2010-03-22 | 2010-03-22 | Threshold-adjustable micro-pressure overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201731129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062164A (en) * | 2013-01-09 | 2013-04-24 | 中联重科股份有限公司 | Overload protection debugging control method, overload protection debugging control device, overload protection debugging control system and engineering machine |
-
2010
- 2010-03-22 CN CN2010201364002U patent/CN201731129U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062164A (en) * | 2013-01-09 | 2013-04-24 | 中联重科股份有限公司 | Overload protection debugging control method, overload protection debugging control device, overload protection debugging control system and engineering machine |
| CN103062164B (en) * | 2013-01-09 | 2015-05-13 | 中联重科股份有限公司 | Overload protection debugging control method, overload protection debugging control device, overload protection debugging control system and engineering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110202 Termination date: 20120322 |