CN204828815U - Safety valve - Google Patents

Safety valve Download PDF

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Publication number
CN204828815U
CN204828815U CN201520436516.0U CN201520436516U CN204828815U CN 204828815 U CN204828815 U CN 204828815U CN 201520436516 U CN201520436516 U CN 201520436516U CN 204828815 U CN204828815 U CN 204828815U
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CN
China
Prior art keywords
valve
valve body
knob
flap
safety
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Application number
CN201520436516.0U
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Chinese (zh)
Inventor
姜辉
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Ningbo Amico Copper Valves Manufacturing Co Ltd
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Ningbo Amico Copper Valves Manufacturing Co Ltd
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Priority to CN201520436516.0U priority Critical patent/CN204828815U/en
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Abstract

The utility model discloses a safety valve, the utility model relates to an install in closed circulation system's valve structure, its structure mainly is by the valve body, a valve cove, the knob, the valve rod, the valve clack, constitutions such as pressure regulating nut and compression spring, and improve the valve clack, it is equipped with the flexible cover that the round disjunctor upwards extends in the valve clack periphery, and be equipped with the go -between limit to turning up and rolling over at the top of flexibility cover, this go -between limit compresses tightly fixedly by valve gap and valve body again, can accomplish being connected between valve body and the valve gap sealedly through the valve clack structure of the aforesaid design, and water inlet, the synchronization of pressure release mouth is sealed, thereby safety valve's sealing reliability and safety in utilization have been improved, the spare part quantity of valve has also been retrencied, reduces the production cost, it is compacter to make the structural configuration in the valve body.

Description

Safety valve
Technical field
The utility model relates to a kind of valve mechanism being installed on closed circulation system, especially safety valve.
Background technique
Safety valve is a kind of common, self-acting valve of being installed on closed circulation system; also be boiler, pressurized container and other important safety annexes be stressed on equipment; along with the fast development of China's economic construction; items of equipment engineering with pressure management also gets more and more; in view of the needs of equipment pressure release, safety valve will play vital effect in proterctive equipment process.At present, structure and the disclosed China Patent No. of safety valve be 200320130048.1 " safety valve " similar, be mainly made up of valve body, valve gap, knob, valve rod, flap, look nut and Compress Spring etc.When the pressure medium in system exceedes specified value, pressure medium will overcome the elastic force of Compress Spring and opens pressure relief opening by pushing tow flap, now just can to discharge medium outside system, anti-locking system medium overpressure, runs equipment and personal security plays a protective role; When the pressure medium in system drops to limit value, Compress Spring pushing tow flap resets, just energy automatic-closing valve, stops medium outwards to discharge.But, but find in actual use, there are some design deficiency in the flap of current safety valve in pressure release seal process, be limited to the topology layout in valve body and make these flaps only can bear the sealing keying of water intake, and the synchronous sealed to the connection sealing between valve body and valve gap and water intake, pressure relief opening cannot be accomplished, therefore the sealing reliability that have impact in safety relief process and safety in utilization.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defect of prior art and provides a kind of safety valve that is reliable, use safety that seals, and the flap of this safety valve can accomplish the synchronous sealed to the connection sealing between valve body and valve gap and water intake, pressure relief opening.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of safety valve, the pressure relief opening of the valve body sidepiece that comprises valve body, is arranged on the water intake of body base, is arranged on, seals the valve gap being arranged on body top and the knob be movably arranged on valve gap; The valve rod of axial lifting moving made by the shaft axis be provided with in described valve body along water intake, and this valve rod lower end is provided with flap seat and sealing contact the flap opening and closing water intake, and this valve rod upper end is stretched out valve gap and connected knob, and drives rotation by knob; Look nut is provided with between described valve rod and valve gap, this look nut is threaded with the intercropping of valve rod, the axial lifting moving of intercropping of look nut and valve gap is equipped with, the Compress Spring of mutual pushing tow is provided with between look nut and flap seat, the flexible boot that a circle disjunctor upwards extends is arranged with outside described flap, the top of this flexible boot is provided with the connecting ring limit of outwards turnover, and described valve gap is connected with valve seal, and is fixed on described connecting ring limit.
Described connecting ring limit comprises a circle arc protuberance that flexible boot top outwards turns down and disjunctor and extends in circle " ┓ " type joint on arc protuberance, the horizontal edge of described " ┓ " type joint is fixed by described valve gap and valve body, and the vertical edge setting-in of described " ┓ " type joint is arranged in the default annular caulking groove of described valve body end face.
Described water intake top outer rim is provided with a circle seal boss, and described flap bottom surface is provided with and forms with described seal boss the seal groove contacting and seal.
The guiding rib and guiding groove that form the axial lifting moving of look nut is respectively equipped with between described look nut and valve gap.
Be respectively equipped with the equipped axial ribs of axial lifting moving and axial groove between described valve rod and knob, described valve rod is provided with the snap ring be positioned at below knob, and valve stem top connects locking nut through knob.
Be provided with the spring stack installed for described Compress Spring upper end bottom described look nut, flap seat top is provided with the spring groove installed for described Compress Spring lower end.
Compared with prior art, the utility model mainly improves the flap of safety valve, it is outside flap, be arranged with the flexible boot that a circle disjunctor upwards extends, and the connecting ring limit of outwards turnover is provided with at the top of flexible boot, this connecting ring limit is fixed by valve gap and valve body again, can accomplish the connection sealing between valve body and valve gap by the valve flap structure of above-mentioned design, and water intake, the synchronous sealed of pressure relief opening, thus improve sealing reliability and the safety in utilization of safety valve, also the amount of parts of valve has been simplified, make the topology layout in valve body compacter.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Fig. 2 is the sectional structure schematic diagram of flap.
Embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Figure 1 and Figure 2,1. valve body, 11. water intakes, 12. pressure relief openings, 13. seal bosses, 2. flap, 21. flexible boot, 22. connecting ring limits, 221. arc protuberances, 222. " ┓ " type joint, 23. seal grooves, 3. flap seat, 31. spring grooves, 4. Compress Spring, 5. look nut, 51. spring stacks, 6. valve rod, 61. locking nuts, 62. snap rings, 7. knob, 8. valve gap, 9. sealing gasket.
Safety valve, as shown in Figure 1, often be installed in closed circulation system, it be boiler, pressurized container and other important safety annexes be stressed on equipment, its structure is mainly made up of valve body 1, valve gap 8, knob 7, valve rod 6, flap 2, look nut 5 and Compress Spring 4 etc.
Described valve body 1 is " ┣ " type shape three way valve; Wherein, valve body 1 top supplies valve gap 8 to make the mount inlet be threaded, between valve gap 8 and valve body 1, also can arrange sealing gasket 9 seal with the connection done between the two, it is water intake 11 bottom valve body 1, valve body 1 sidepiece is pressure relief opening 12, and the shaft axis of water intake 11 and the shaft axis of pressure relief opening 12 are in vertical state.
The valve rod 6 vertically installed is provided with in described valve body 1 and valve gap 8, this valve rod can make axial lifting moving along the shaft axis of water intake 11, and valve rod 6 lower end is provided with hard-wired flap seat 3 and flap 2, this flap 2 can seal contact and open and close water intake 11 by the axial lifting moving of valve rod 6, in order to promote sealing reliability and the safety in utilization of flap 2, this flap 2 adopts comparatively unique structure, namely outside flap 2, be arranged with the flexible boot 21 that a circle disjunctor upwards extends as shown in Figure 2, the top of this flexible boot is provided with the connecting ring limit 22 of outwards turnover, and the circle arc protuberance 221 that connecting ring limit is mainly outwards turned down by flexible boot 21 top and circle " ┓ " type joint 222 that disjunctor extends on arc protuberance are formed, and the horizontal edge of " ┓ " type joint 222 is also fixed when being tightly connected by valve gap 8 and valve body 1, the vertical edge of " ┓ " type joint 222 then setting-in is arranged in the annular caulking groove that valve body 1 end face presets, therefore just can accomplish to seal the connection between valve body 1 and valve gap 8 by this flap 2 design, and water intake 11, the synchronous sealed of pressure relief opening 12.
Described water intake 11 top outer rim is provided with a circle seal boss 13, and flap 2 bottom surface will be designed to form with sealing boss and contacts the better seal groove 23 of sealing effect.
Described valve rod 6 upper end is stretched out valve gap 8 and is connected knob 7, then the locking of valve rod 6 upper end link position is carried out with locking nut 61, knob 7 is movably arranged on valve gap 8, namely rotating operation can be carried out on valve gap 8 after installing, after knob 7 installation, also need to carry out flanging seal process, to prevent user's realizing self disassembling.
Connection between described valve rod 6 and knob 7 is between valve rod 6 and knob 7, be respectively equipped with active mounting axial ribs and axial groove, the snap ring 62 be positioned at below knob is provided with again on valve rod 6, the purpose of design of this structure is by equipped axial ribs and axial groove band ovable valve stem 6 synchronous axial system when knob 7 rotates, and the active mounting of axial ribs and axial groove also can not hinder the axial lifting moving of valve rod 6, and snap ring 62 is the rising shift motions in order to limit valve rod 6.
Look nut 5 is provided with between described valve rod 6 and valve gap 8, this look nut is threaded with the intercropping of valve rod 6, formed the axial lifting moving of look nut 5 by the guiding rib that designs respectively and guiding groove between look nut 5 and valve gap 8, be specially: when knob 7 is with ovable valve stem 6 to rotate, look nut 5 can convert rotational action to axial lifting moving.
The Compress Spring 4 of mutual pushing tow is provided with between described look nut 5 and flap seat 3, and bottom look nut 5, be provided with the spring stack 51 installed for Compress Spring 4 upper end, flap seat 3 top is provided with the spring groove 31 installed for Compress Spring 4 lower end, by the axial lifting moving of look nut 5 away from or near flap seat 3, thus Compress Spring 4 is loosened or compresses, namely reach the pressure regulation object of valve.
The working procedure of this safety valve is: when system pressure is too high, overcome the elastic force rising of Compress Spring 4 by the automatic pushing tow flap 2 of pressure medium and open water intake 11, then pressure relief opening 12 discharge medium can carry out pressure release to system, thus plays the effect of proterctive equipment; When system pressure returns to preset pressure, Compress Spring 4 pushing tow flap 2 declines reset fast, and water intake 11 and pressure relief opening 12 are in closed condition again, stops medium outwards to discharge.The preset pressure of whole safety valve is then the decrement being regulated Compress Spring 4 by the axial lifting moving of look nut 5, thus obtains required preset pressure.
The utility model, when the basic usage requirement of guarantee safety valve, has greatly been simplified topology layout and the number of parts of product, has been made structure more safe and reliable, with low cost.

Claims (6)

1. a safety valve, comprises valve body (1), is arranged on the water intake (11) of body base, is arranged on the pressure relief opening (12) of valve body sidepiece, seals the valve gap (8) being arranged on valve body (1) top and the knob (7) be movably arranged on valve gap (8), the valve rod (6) of axial lifting moving made by the shaft axis be provided with in described valve body (1) along water intake (11), this valve rod lower end is provided with flap seat (3) and contacts with sealing the flap (2) opening and closing water intake (11), this valve rod (6) upper end is stretched out valve gap (8) and is connected knob (7), and drives rotation by knob, look nut (5) is provided with between described valve rod (6) and valve gap (8), this look nut is threaded with the intercropping of valve rod (6), look nut (5) is equipped with the axial lifting moving of the intercropping of valve gap (8), the Compress Spring (4) of mutual pushing tow is provided with between look nut (5) and flap seat (3), it is characterized in that being arranged with outside described flap (2) flexible boot (21) that a circle disjunctor upwards extends, the top of this flexible boot is provided with the connecting ring limit (22) of outwards turnover, described valve gap (8) and valve body (1) are tightly connected, and described connecting ring limit (22) is fixed.
2. safety valve according to claim 1, it is characterized in that described connecting ring limit (22) comprises circle arc protuberance (221) that flexible boot (21) top outwards turns down and disjunctor and extends in one on arc protuberance and enclose " ┓ " type joint (222), the horizontal edge of described " ┓ " type joint (222) is fixed by described valve gap (8) and valve body (1), and the vertical edge setting-in of described " ┓ " type joint (222) is arranged in the default annular caulking groove of described valve body (1) end face.
3. safety valve according to claim 1, it is characterized in that described water intake (11) top outer rim is provided with a circle seal boss (13), described flap (2) bottom surface is provided with the seal groove (23) forming with described seal boss (13) and contact and seal.
4. safety valve according to claim 1, is characterized in that being respectively equipped with the guiding rib and guiding groove that form look nut (5) axial lifting moving between described look nut (5) and valve gap (8).
5. safety valve according to claim 1, it is characterized in that between described valve rod (6) and knob (7), being respectively equipped with the equipped axial ribs of axial lifting moving and axial groove, described valve rod (6) is provided with the snap ring (62) being positioned at knob (7) below, and valve rod (6) top connects locking nut (61) through knob (7).
6. the safety valve according to any one of claim 1 ~ 5, it is characterized in that described look nut (5) bottom is provided with the spring stack (51) installed for described Compress Spring (4) upper end, flap seat (3) top is provided with the spring groove (31) installed for described Compress Spring (4) lower end.
CN201520436516.0U 2015-06-24 2015-06-24 Safety valve Active CN204828815U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520436516.0U CN204828815U (en) 2015-06-24 2015-06-24 Safety valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520436516.0U CN204828815U (en) 2015-06-24 2015-06-24 Safety valve

Publications (1)

Publication Number Publication Date
CN204828815U true CN204828815U (en) 2015-12-02

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ID=54686418

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520436516.0U Active CN204828815U (en) 2015-06-24 2015-06-24 Safety valve

Country Status (1)

Country Link
CN (1) CN204828815U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107654705A (en) * 2017-11-10 2018-02-02 骆琦峰 A kind of water heater safety valve
CN107687525A (en) * 2017-09-28 2018-02-13 枣庄九电子科技有限公司 A kind of New-type safety valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107687525A (en) * 2017-09-28 2018-02-13 枣庄九电子科技有限公司 A kind of New-type safety valve
CN107654705A (en) * 2017-11-10 2018-02-02 骆琦峰 A kind of water heater safety valve
CN107654705B (en) * 2017-11-10 2024-06-21 骆琦峰 Safety valve for water heater

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