CN106382398A - Pressure relief valve - Google Patents

Pressure relief valve Download PDF

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Publication number
CN106382398A
CN106382398A CN201610884722.7A CN201610884722A CN106382398A CN 106382398 A CN106382398 A CN 106382398A CN 201610884722 A CN201610884722 A CN 201610884722A CN 106382398 A CN106382398 A CN 106382398A
Authority
CN
China
Prior art keywords
pressure release
valve
guide post
pressure relief
valve body
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.)
Granted
Application number
CN201610884722.7A
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Chinese (zh)
Other versions
CN106382398B (en
Inventor
黄翠萍
赵岗
童心
仲勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Xieli Hydraulic Technology Co Ltd
Original Assignee
Hefei Xieli Hydraulic Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hefei Xieli Hydraulic Technology Co Ltd filed Critical Hefei Xieli Hydraulic Technology Co Ltd
Priority to CN201610884722.7A priority Critical patent/CN106382398B/en
Publication of CN106382398A publication Critical patent/CN106382398A/en
Application granted granted Critical
Publication of CN106382398B publication Critical patent/CN106382398B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/044Safety 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 more than one spring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/164Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

The invention provides a pressure relief valve. A valve bottom and a valve head are arranged at the two ends of a valve body, and a valve cavity is formed in the valve body. The valve cavity is partitioned into a pressure relief cavity and a working cavity through a pressure relief baffle. The pressure relief baffle is provided with a pressure relief sealing groove. A first guide rod is arranged in the pressure relief cavity. A pressure relief core is arranged on the first guide rod in a sleeving manner and comprises a pressure relief guide block, a pressure relief sealing part and a second pressure guide rod. A pressure relief spring is arranged on the first guide rod in a sleeving manner. An oil supply core is arranged on the second guide rod in a sleeving manner and comprises an oil supply guide block and an oil supply sealing part. An oil supply spring is arranged on the second guide rod in a sleeving manner. The valve head is provided with an inlet which is provided with an oil supply sealing groove. A limiting protruding head is arranged in the working cavity. An oil supply port and an air outlet are formed in the portion, between the limiting protruding head and the pressure relief baffle, of the valve body. A pressure relief opening is formed in the portion, close to the valve bottom, of the valve body. The pressure relief core is connected with a manual valve through a pull rod. The pressure relief valve is compact in structure, small in size and simple in process; and the stability of the oil outlet amount of the oil supply port can be ensured, oil drained due to pressure relief can be prevented from flowing back, bubbles in oil products can be discharged, and manual pressure relief can be achieved.

Description

Relief valve
Technical field
The present invention relates to technical field of hydraulic pressure, specifically a kind of relief valve.
Background technology
Relief valve also known as relief valve (safety valve), according to the operating pressure energy automatic open close of system, general installation Protection system safety on the equipment or pipeline of closed system.When equipment or manifold pressure exceed relief valve setting pressure, Automatically turn on pressure release it is ensured that equipment and pipeline internal medium pressure are setting under pressure, protection equipment and pipeline, prevent Unexpected.
Relief valve is an important safety block in hydraulic system, and the effect of relief valve is to ensure that oil pump capacity exists It is held at a more stable amount, thus ensureing the normal operation of whole system under any pressure.Propose new, more effectively make The structure of relief valve, is the continuous pursuit of this area.
Pressure-relief valve structure of the prior art is complex, and technique is loaded down with trivial details, high cost.
Content of the invention
The present invention proposes a kind of relief valve, solves that pressure-relief valve structure of the prior art is complex, and technique is loaded down with trivial details, becomes This high problem.
The technical scheme is that and be achieved in that:
A kind of relief valve, including valve body, it is valve pocket that the two ends of described valve body are respectively in valve bottom and valve head, described valve body;
The middle part of described valve pocket is provided with pressure release baffle plate, and described valve pocket is divided into pressure-releasing chamber and work by described pressure release baffle plate Chamber;
The middle part of described pressure release baffle plate is provided with through hole, and to be provided with pressure release close towards the side of described pressure-releasing chamber for described pressure release baffle plate Sealing groove, described pressure release seal groove was around described through hole one week;
Described pressure release intracavity is provided with the first guide post, and one end of described first guide post is fixed on described valve bottom;
Pressure release core is arranged with described first guide post, described pressure release core includes pressure release guide pad, the pressure release being sequentially connected Sealing member and the second guide post;Described pressure release sealing member is used cooperatively with described pressure release seal groove;Cover on described first guide post It is provided with pressure release spring, described pressure release spring is located between described valve bottom and pressure release guide pad;
It is arranged with described second guide post and supplies wick, described confession wick includes the fuel feeding guide pad being sequentially connected and circular cone The confession oil seal of shape;Fuel feeding spring is arranged with described second guide post, described fuel feeding spring is located at described pressure release sealing member And described fuel feeding guide pad between;
Described valve head is provided with entrance, and described entrance is provided with the fuel feeding seal groove using cooperatively with described confession oil seal;
The displacement that described work intracavity is provided with to described confession wick carries out spacing spacing plush copper;
Oil-feed port and gas outlet, described oil-feed port are offered on the valve body between described spacing plush copper and described pressure release baffle plate Connect with described working chamber with gas outlet;
Offer pressure relief opening on the valve body at described valve bottom, described pressure relief opening is connected with described pressure-releasing chamber;
, positioned at the lower section of described valve body, described gas outlet is located at the top of described valve body for described oil-feed port and pressure relief opening;
Described pressure release core is connected with pull bar, and described pull bar is parallel with described first guide post;The tail end of described pull bar extends Go out described valve bottom;The tail end of described pull bar is connected with the hand-operated valve located at described valve bottom.
Further, it is provided with the first adjusting nut, described first adjusting nut between described pressure release spring and described valve bottom It is screwed on described first guide post.
Further, it is provided with the second adjusting nut, described second tune between described fuel feeding spring and described pressure release sealing member Section nut is screwed on described second guide post.
Further, described pressure release seal groove is the groove of triangle for section;Described pressure release sealing member includes a disk, Described disk is provided with the sealing bulge loop that the section mated with described pressure release seal groove is triangle.
Further, it is provided with the first sealing material layer in described pressure release seal groove.
Further, described fuel feeding seal groove is the round platform connected in star mating with described confession oil seal.
Further, it is provided with the second sealing material layer in described fuel feeding seal groove.
Further, the internal diameter of described gas outlet is gradually reduced by outside described working chamber laterally described valve body;Near institute It is provided with screen plate on the gas outlet stating working chamber side, in described gas outlet, be equipped with a ball sealer, the diameter of described ball sealer Internal diameter more than the gas outlet outside described valve body.
Further, described hand-operated valve includes supporting part and lever portion;
Described supporting part, located at described valve bottom, has rod cavity in the middle of described supporting part, is provided with the 3rd guiding in described rod cavity Bar, the two ends of described 3rd guide post are against the two ends of described rod cavity;
The side of the tail end towards described pull bar for the described supporting part is provided with and penetrates hole, described penetrates between hole and described valve bottom Supporting part formed support base;
The side of the described supporting part dorsad tail end of described pull bar is provided with break-through groove;
One end of described lever portion is hinged with the tail end of described pull bar;The other end of described lever portion through described penetrate hole, Rod cavity and break-through groove are arranged in described supporting part, and described lever portion has reach through hole, and described 3rd guide post is arranged in institute State break-through in the hole;
Be arranged with the 3rd spring on described 3rd guide post, described 3rd spring be located at described lever portion and described valve bottom it Between.
Beneficial effects of the present invention are:
Present invention design is simple, compact conformation, small volume, and process is simple is with low cost;When oil pressure is not reaching to marginal value When, only fuel feeding spring stress compression, fuel feeding can be carried out by oil-feed port, when oil pressure exceedes marginal value, pressure release spring is also subject to Force compresses, then excessive oil can discharge it is ensured that the stability of oil-feed port oil pump capacity from pressure relief opening;In non-draining, pressure release seals Part is closely pressed with pressure release seal groove, it is to avoid the oil refluence that pressure release is released;Bubble in oil can be discharged by gas outlet;Acceptable Manually valve carries out manual pressure release, using flexible.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the mplifying structure schematic diagram at hand-operated valve.
Wherein:
1st, valve body;2nd, valve bottom;3rd, valve head;4th, pressure release baffle plate;5th, pressure-releasing chamber;6th, working chamber;7th, pressure release seal groove;8th, first Guide post;9th, pressure release guide pad;10th, pressure release sealing member;11st, the second guide post;12nd, seal bulge loop;13rd, the first encapsulant Layer;14th, pressure release spring;15th, the first adjusting nut;16th, fuel feeding guide pad;17th, supply oil seal;18th, fuel feeding spring;19th, Two adjusting nuts;20th, entrance;21st, fuel feeding seal groove;22nd, the second sealing material layer;23rd, spacing plush copper;24th, oil-feed port;25、 Pressure relief opening;26th, pull bar;27th, hand-operated valve;28th, supporting part;29th, lever portion;30th, rod cavity;31st, the 3rd guide post;32nd, penetrate hole; 33rd, support base;34th, break-through groove;35th, reach through hole;36th, the 3rd spring;37th, gas outlet;38th, screen plate;39th, ball sealer.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.
As shown in figure 1, the relief valve in the present embodiment, including valve body 1, the two ends of described valve body 1 are respectively valve bottom 2 and valve 3, it is valve pocket in described valve body 1, valve body 1 and valve pocket be all cylinder.The middle part of described valve pocket is provided with pressure release baffle plate 4, pressure release Baffle plate 4 is circle, and the excircle of pressure release baffle plate 4 is fitted with the inwall of valve body 1, and described valve pocket is divided into by described pressure release baffle plate 4 Pressure-releasing chamber 5 and working chamber 6.The middle part of described pressure release baffle plate 4 is provided with through hole, and described pressure release baffle plate 4 is towards the one of described pressure-releasing chamber 5 Side is provided with pressure release seal groove 7, and described pressure release seal groove 7 was around described through hole one week.
It is provided with the first guide post 8, one end of described first guide post 8 is fixed on described valve bottom 2 in described pressure-releasing chamber 5, First guide post 8 is located on the axle center of pressure-releasing chamber 5.Pressure release core is arranged with described first guide post 8, described pressure release core include according to The pressure release guide pad 9 of secondary connection, pressure release sealing member 10 and the second guide post 11;Described pressure release sealing member 10 and described pressure release sealing Groove 7 uses cooperatively, and in the present embodiment, described pressure release seal groove 7 is the groove of triangle for section;Described pressure release sealing member 10 wraps Include a disk, described disk is provided with the sealing bulge loop 12 that the section mated with described pressure release seal groove 7 is triangle, described lets out It is provided with the first sealing material layer 13, to improve sealing in densification sealing groove 7;It is arranged with pressure release spring on described first guide post 8 14, described pressure release spring 14 is located between described valve bottom 2 and pressure release guide pad 9.In the present embodiment, described pressure release spring 14 and institute State and between valve bottom 2, be provided with the first adjusting nut 15, described first adjusting nut 15 is screwed on described first guide post 8.Can lead to Overregulate the position of the first adjusting nut 15 pressure to adjust pressure release spring 14.
Second guide post 11 is located on the axle center of described valve pocket, described second guide post 11 is arranged with and supplies wick, described Include the confession oil seal 17 of the fuel feeding guide pad 16 and cone being sequentially connected for wick;Sheathed on described second guide post 11 There is fuel feeding spring 18, described fuel feeding spring 18 is located between described pressure release sealing member 10 and described fuel feeding guide pad 16.This enforcement In example, between described fuel feeding spring 18 and described pressure release sealing member 10, it is provided with the second adjusting nut 19, described second adjusting nut 19 are screwed on described second guide post 11.The pressure of fuel feeding spring 18 can be adjusted by adjusting the position of the second adjusting nut 19 Power.
Described valve head 3 is provided with entrance 20, and described entrance 20 is provided with the fuel feeding using cooperatively with described confession oil seal 17 Seal groove 21.In the present embodiment, described fuel feeding seal groove 21 is the round platform connected in star mating with described confession oil seal 17, described It is provided with the second sealing material layer 22, to ensure sealing in fuel feeding seal groove 21.
It is provided with the displacement to described confession wick in described working chamber 6 and carry out spacing spacing plush copper 23.In the present embodiment, limit The quantity of position plush copper 23 is two, is relatively arranged on the inwall of valve pocket, and the gap between two spacing plush coppers 23 can allow to supply Oily guide pad 16 passes through, but can stop for oil seal 17, to realize position-limiting action, will not stop passing through of oil again.
Oil-feed port 24 and gas outlet 37, institute are offered on the valve body 1 between described spacing plush copper 23 and described pressure release baffle plate 4 State oil-feed port 24 to connect with described working chamber 6 with gas outlet 37.Offer pressure relief opening 25, institute on the valve body 1 at described valve bottom 2 State pressure relief opening 25 to connect with described pressure-releasing chamber 5;Described oil-feed port 24 and pressure relief opening 25 are located at the lower section of described valve body 1, described go out QI KOU 37 is located at the top of described valve body 1.
In the present embodiment, the internal diameter of described gas outlet 37 is gradually reduced by outside described working chamber 6 laterally described valve body 1; It is provided with screen plate 38 on the gas outlet 37 of described working chamber 6 side, in described gas outlet 37, be equipped with a ball sealer 39, institute State the internal diameter with diameter greater than the gas outlet 37 near described valve body 1 outside of ball sealer 39.Then under normal circumstances, ball sealer 39 is put Put on described screen plate 38, between ball sealer 39 and gas outlet 37, leave space, the oil entering from entrance 20 reaches working chamber 6 Inside enter row cache, such as fruit oil internal memory can rise in bubble, then bubble, and after filtering through screen plate 38, from ball sealer 39 with give vent to anger Space between mouth 37 is discharged;After the gas emptying in working chamber 6, with the rising of oily liquid level, ball sealer 39 can float Rise until sealing gas outlet 37, then oil is sealed in working chamber 6.
Referring to Fig. 2, described pressure release core is connected with pull bar 26, and described pull bar 26 is parallel with described first guide post 8;Described draw The tail end of bar 26 extends described valve bottom 2;The tail end of described pull bar 26 is connected with the hand-operated valve 27 located at described valve bottom 2.This reality Apply in example, described hand-operated valve 27 includes supporting part 28 and lever portion 29;Described supporting part 28 is located at described valve bottom 2, described support There is in the middle of portion 28 rod cavity 30, in described rod cavity 30, be provided with the 3rd guide post 31, the two ends of described 3rd guide post 31 are against institute State the two ends of rod cavity 30;The side of the tail end towards described pull bar 26 for the described supporting part 28 is provided with and penetrates hole 32, described penetrates hole Supporting part 28 between 32 and described valve bottom 2 forms support base 33;Described supporting part 28 dorsad the tail end of described pull bar 26 one Side is provided with break-through groove 34;One end of described lever portion 29 is hinged with the tail end of described pull bar 26;The other end of described lever portion 29 It is arranged in described supporting part 28 through described hole 32, rod cavity 30 and the break-through groove 34 of penetrating, described lever portion 29 has reach through hole 35, described 3rd guide post 31 is arranged in described reach through hole 35, and the diameter of reach through hole 35 is greater than the 3rd guide post 31 here Diameter so that lever portion 29 can move in the axial direction of lever portion 29, to adapt to the skew that produces during pull bar 26 pull-out; It is arranged with the 3rd spring 36, described 3rd spring 36 is located at described lever portion 29 and described valve bottom 2 on described 3rd guide post 31 Between.
During the present embodiment work, oil enters from entrance 20, and in the presence of oil pressure, fuel feeding spring 18 is compressed, after wick Move, oil enters working chamber 6 from entrance 20, then carry out fuel feeding from oil-feed port 24 outflow;When the oil pressure entering from entrance 20 is excessive, Pressure release spring 14 is compressed, and moves after pressure release core, then excessive oil enters pressure-releasing chamber 5, then discharges from pressure relief opening 25, to ensure fuel feeding The stablizing of mouthful 24 fuel deliveries.In non-draining, pressure release sealing member 10 is closely pressed with pressure release seal groove 7, it is to avoid pressure release is released Oil flows backwards.
Manually manual pressure release can be carried out by valve 27, press the tail end of lever portion 29, then lever portion 29 is with support base 33 Rotated for fulcrum, pull bar 26 is pulled out, and then driven shifting after pressure release core, realized pressure release.After the completion of pressure release, lever portion 29 exists Reset in the presence of pressure release spring 14 and the 3rd spring 36, the 3rd spring 36 be set, assosting effect is played for pressure release spring 36, Improve the sealing of pressure release sealing member 10 and the reset function of pressure release core.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.

Claims (9)

1. it is characterised in that including valve body, the two ends of described valve body are respectively valve bottom and valve head, described valve body to a kind of relief valve Interior for valve pocket;
The middle part of described valve pocket is provided with pressure release baffle plate, and described valve pocket is divided into pressure-releasing chamber and working chamber by described pressure release baffle plate;
The middle part of described pressure release baffle plate is provided with through hole, and described pressure release baffle plate is provided with pressure release sealing towards the side of described pressure-releasing chamber Groove, described pressure release seal groove was around described through hole one week;
Described pressure release intracavity is provided with the first guide post, and one end of described first guide post is fixed on described valve bottom;
Pressure release core is arranged with described first guide post, described pressure release core includes pressure release guide pad, the pressure release sealing being sequentially connected Part and the second guide post;Described pressure release sealing member is used cooperatively with described pressure release seal groove;It is arranged with described first guide post Pressure release spring, described pressure release spring is located between described valve bottom and pressure release guide pad;
It is arranged with described second guide post and supplies wick, described confession wick includes the fuel feeding guide pad being sequentially connected and cone For oil seal;Fuel feeding spring is arranged with described second guide post, described fuel feeding spring is located at described pressure release sealing member and institute State between fuel feeding guide pad;
Described valve head is provided with entrance, and described entrance is provided with the fuel feeding seal groove using cooperatively with described confession oil seal;
The displacement that described work intracavity is provided with to described confession wick carries out spacing spacing plush copper;
Oil-feed port and gas outlet offered on the valve body between described spacing plush copper and described pressure release baffle plate, described oil-feed port and going out QI KOU is connected with described working chamber;
Offer pressure relief opening on the valve body at described valve bottom, described pressure relief opening is connected with described pressure-releasing chamber;
, positioned at the lower section of described valve body, described gas outlet is located at the top of described valve body for described oil-feed port and pressure relief opening;
Described pressure release core is connected with pull bar, and described pull bar is parallel with described first guide post;The tail end of described pull bar extends institute State valve bottom;The tail end of described pull bar is connected with the hand-operated valve located at described valve bottom.
2. relief valve as claimed in claim 1 is it is characterised in that be provided with the first tune between described pressure release spring and described valve bottom Section nut, described first adjusting nut is screwed on described first guide post.
3. relief valve as claimed in claim 2 is it is characterised in that be provided between described fuel feeding spring and described pressure release sealing member Second adjusting nut, described second adjusting nut is screwed on described second guide post.
4. relief valve as claimed in claim 3 is it is characterised in that described pressure release seal groove is the groove of triangle for section; Described pressure release sealing member includes a disk, and it is the close of triangle that described disk is provided with the section mated with described pressure release seal groove Envelope bulge loop.
5. relief valve as claimed in claim 4 is it is characterised in that be provided with the first sealing material layer in described pressure release seal groove.
6. relief valve as claimed in claim 5 is it is characterised in that described fuel feeding seal groove is to mate with described confession oil seal Round platform connected in star.
7. relief valve as claimed in claim 6 is it is characterised in that be provided with the second sealing material layer in described fuel feeding seal groove.
8. relief valve as claimed in claim 7 is it is characterised in that the internal diameter of described gas outlet is laterally described by described working chamber It is gradually reduced outside valve body;It is provided with screen plate on the gas outlet of described working chamber side, in described gas outlet, be equipped with one Ball sealer, the internal diameter with diameter greater than the gas outlet outside described valve body of described ball sealer.
9. relief valve as claimed in claim 8 is it is characterised in that described hand-operated valve includes supporting part and lever portion;
Described supporting part, located at described valve bottom, has rod cavity in the middle of described supporting part, is provided with the 3rd guide post, institute in described rod cavity The two ends stating the 3rd guide post are against the two ends of described rod cavity;
The side of the tail end towards described pull bar for the described supporting part is provided with and penetrates hole, described penetrate between hole and described valve bottom Support part forms support base;
The side of the described supporting part dorsad tail end of described pull bar is provided with break-through groove;
One end of described lever portion is hinged with the tail end of described pull bar;The other end of described lever portion penetrates hole, rod cavity through described Be arranged in described supporting part with break-through groove, described lever portion have reach through hole, described 3rd guide post be arranged in described in wear In through hole;
It is arranged with the 3rd spring, described 3rd spring is located between described lever portion and described valve bottom on described 3rd guide post.
CN201610884722.7A 2016-10-10 2016-10-10 relief valve Active CN106382398B (en)

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CN106382398B CN106382398B (en) 2018-09-28

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108397583A (en) * 2018-03-08 2018-08-14 浙江华益精密机械股份有限公司 Safety valve and the wall-hung boiler heating system for using the safety valve
CN109372056A (en) * 2018-10-20 2019-02-22 华北理工大学 Rain collector
CN110469700A (en) * 2019-09-05 2019-11-19 杨锋 A kind of small-sized automatic open-close type pressure relief valve
CN113898560A (en) * 2021-08-30 2022-01-07 谭浩 Pressure-relief-preventing energy-saving gas compressor

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JPH02225887A (en) * 1989-01-14 1990-09-07 Danfoss As Valve
CN2641412Y (en) * 2003-07-18 2004-09-15 邵建昌 Single diection, safety decompression valve
CN202768966U (en) * 2012-09-06 2013-03-06 沈阳光正工业有限公司 Overpressure protective device of pipeline
CN203926962U (en) * 2014-04-18 2014-11-05 丹阳市飞轮气体阀门有限公司 A kind of cryogenic insulated cylinder safety valve solar term seat
CN204153248U (en) * 2014-10-17 2015-02-11 莱芜钢铁集团电子有限公司 A kind of overflow modulating valve
CN104373646A (en) * 2014-11-13 2015-02-25 常州市华贤五金厂 Pilot-operated air pressure safety valve
CN205534436U (en) * 2016-04-07 2016-08-31 中广核核电运营有限公司 Active definite value adjustable pressure discharge protection device of piston non -

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02225887A (en) * 1989-01-14 1990-09-07 Danfoss As Valve
CN2641412Y (en) * 2003-07-18 2004-09-15 邵建昌 Single diection, safety decompression valve
CN202768966U (en) * 2012-09-06 2013-03-06 沈阳光正工业有限公司 Overpressure protective device of pipeline
CN203926962U (en) * 2014-04-18 2014-11-05 丹阳市飞轮气体阀门有限公司 A kind of cryogenic insulated cylinder safety valve solar term seat
CN204153248U (en) * 2014-10-17 2015-02-11 莱芜钢铁集团电子有限公司 A kind of overflow modulating valve
CN104373646A (en) * 2014-11-13 2015-02-25 常州市华贤五金厂 Pilot-operated air pressure safety valve
CN205534436U (en) * 2016-04-07 2016-08-31 中广核核电运营有限公司 Active definite value adjustable pressure discharge protection device of piston non -

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108397583A (en) * 2018-03-08 2018-08-14 浙江华益精密机械股份有限公司 Safety valve and the wall-hung boiler heating system for using the safety valve
CN109372056A (en) * 2018-10-20 2019-02-22 华北理工大学 Rain collector
CN110469700A (en) * 2019-09-05 2019-11-19 杨锋 A kind of small-sized automatic open-close type pressure relief valve
CN110469700B (en) * 2019-09-05 2020-12-04 台州市路桥鸿辉水暖厂 Small-size automatic on-off formula pressure relief valve
CN113898560A (en) * 2021-08-30 2022-01-07 谭浩 Pressure-relief-preventing energy-saving gas compressor

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