CN109027344A

CN109027344A - A kind of valve that can be automatically closed

Info

Publication number: CN109027344A
Application number: CN201811244497.6A
Authority: CN
Inventors: 龙长贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-10-24
Filing date: 2018-10-24
Publication date: 2018-12-18

Abstract

The invention discloses a kind of valves that can be automatically closed, including valve tube body, switch trigger gear and valve switch, the switch trigger gear includes compression cylinder, spring, movable lug, gag lever post and card handle, compression cylinder is installed on valve tube body and is connected with valve tubular body runner, spring and movable lug are equipped with inside compression cylinder, movable lug is equipped with gag lever post, card handle is connected with valve switch, movable lug can move in compression cylinder, the top of gag lever post can be pierced by the top of compression cylinder to limit the rotation of card handle, and card handle can be rotated synchronously with valve switch；Valve switch is self-resetting switch, when leakage decompression occurs in the fluid line being connected with valve, and the Fluid pressure in compression cylinder is lower than spring power, gag lever post enters inside compression cylinder to discharge card handle, after the release of card handle, valve switch automatically resets with isolating valve tubular body runner.Valve of the invention can be automatically closed according to change in fluid pressure realization in pipeline, and block fluid continues to flow.

Description

A kind of valve that can be automatically closed

Technical field

The invention belongs to the valve technology fields in fluid feed line, and in particular to a kind of valve that can be automatically closed.

Background technique

Valve is the safe corollary apparatus in a kind of fluid feed line, the stream for being truncated, connecting, adjust in pipeline Body has good control characteristic and closes sealing performance, it is more to be suitable for town gas, liquefied petroleum, natural gas and oxygen etc. On kind fluid media (medium) feed-line.

Valve in industry and life using more and more extensive, be applied to liquefied petroleum feed-line, natural gas transportation Pipeline, waterline, the every aspects such as fluid circuit, domestic gas pipeline and oxygen cutting gas supply line in engineering experiment In fluid feed line.But existing valve still has defect, when pipeline occurs rupture, falls off or burn, Valve can not be automatically closed to be continued to flow with block fluid, and fluid is caused to occur to leak and waste of resource, oil and natural gas Equal combustible fluids may cause burning or explosion accident when revealing serious, cause economic loss and casualties.Therefore, it is necessary to A kind of valve that can be automatically closed is designed, when fluid leakage, which occurs, for fluid line reduces the Fluid pressure of valve, valve energy Closing automatically reset enough fluid is truncated, prevents fluid from continuing to leak, prevents the wasting of resources, avoids that the things such as burn or explode occur Therefore.

Summary of the invention

In view of the deficienciess of the prior art, the present invention provides a kind of valve that can be automatically closed, which utilizes fluid Pressure change automatic trigger valve switch is resetted with isolating valve tubular body runner, and block fluid continues to flow, and prevents fluid Continue to leak, prevent the wasting of resources, avoids that the accidents such as burn or explode occur.

The present invention is achieved by the following technical solutions:

A kind of valve that can be automatically closed, including valve tube body, switch trigger gear and valve switch；The switch trigger gear Including compression cylinder, spring, movable lug, gag lever post and card handle, the compression cylinder be installed on valve tube body and with valve tubular body Runner is connected, and spring and movable lug are equipped with inside compression cylinder, and movable lug is equipped with gag lever post, and card handle is connected with valve switch, valve Door switch is self-resetting switch, and when valve is accessed in fluid line, the intracorporal fluid of valved tube is able to enter the inside of compression cylinder, When the Fluid pressure of valve tubular body is greater than spring power, the top of movable lug forced compression spring, gag lever post can be run through The top of compression cylinder is to limit the rotation of card handle, and the valve switch being connected with card handle is limited and keeps it turning on, when valve tubular body Fluid pressure when being less than spring power, spring stretching, extension and drive movable lug mobile, gag lever post can enter inside compression cylinder to release Card handle is put, valve switch resets rotation with isolating valve tubular body runner；When the fluid line being connected with valve tube body is because going out When situations such as now rupturing, fall off or burning causes fluid to leak, valve tubular body Fluid pressure is reduced, the fluid in compression cylinder Pressure reduction, after gag lever post discharges card handle, valve switch is resetted with isolating valve tubular body runner；The valve can utilize fluid Pressure change automatic trigger valve switch is resetted with isolating valve tubular body runner, and block fluid continues to flow, and prevents fluid Continue to leak, prevent the wasting of resources, avoids that the accidents such as burn or explode occur.

Further, the movable lug is equipped with the first sealing ring for preventing fluid from leaking, and the first sealing ring can prevent fluid It is leaked from the inner wall contact surface of movable lug and compression cylinder.

Further, it is fixedly mounted between the compression cylinder and valve tube body by screw, compression cylinder easy to disassemble is with more Spring is changed, suitable spring is selected according to the Fluid pressure in fluid line.

Further, the top of the compression cylinder is equipped with the limit plate for the positioning of card handle, and limit plate is fixed on compression cylinder Top, card handle and limit plate are equipped with corresponding for installing the pin hole of pin, and when Open valve, card handle turns to limit At plate, and it is inserted into pin fixing card handle, gag lever post limits card handle behind the top of compression cylinder, and card handle takes after being limited bar limitation Pin out.

Further, the valve switch includes sealing valve and resets transmission device, and sealing valve is installed in valved tube body Portion, resetting transmission device includes valve rod, handle, support shank and torsional spring, the tube wall of one end insertion valve tube body of valve rod and sealing Valve connection, the other end of valve rod are connect with card handle, and handle is mounted on valve rod, and support shank is mounted on compression cylinder outer wall, valve rod, hand Torsional spring is equipped between handle and support shank, after gag lever post discharges card handle, under the action of torsional spring, valve rod rotation is with band seal valve Rotation, thus isolating valve tubular body runner, by handle capable of being rotation valve rod to assist Open valve.

Further, the sealing valve is the globe valve equipped with valve opening, and the both ends of globe valve are equipped with for cooperating globe valve The cushion of runner is sealed, rotation spherical valve, when valve opening is connected with the through-hole of cushion, fluid can flow through valve, valve opening and cushion Through-hole when being not communicated with, globe valve and cushion cooperate to separate runner.

Further, valve seat and plain cushion are equipped in the valved tube body, valve seat is threadedly coupled with valve inboard wall of tube body, valve seat For installing and limiting plain cushion and cushion.

Further, the valve rod in valve tube body tube wall is equipped with stop collar, the valve tube body at stop collar Outer wall is equipped with gland, and gland can prevent valve rod from moving along long axis.

Further, the stop collar is equipped with the second sealing ring for preventing fluid from leaking, and the second sealing ring can prevent Fluid is leaked from the contact surface of stop collar and valve tube body.

The beneficial effects of the present invention are: a kind of valve that can be automatically closed of the invention, the fluid hose of valve connection When line causes fluid to leak because there is situations such as rupturing, fall off or burning, valve tubular body Fluid pressure is reduced, to switch Trigger device breaking-out, triggering valve switch are resetted with isolating valve tubular body runner；The valve can utilize change in fluid pressure Automatic trigger valve switch is resetted with isolating valve tubular body runner, and block fluid continues to flow, and prevents fluid from continuing to leak, The wasting of resources is prevented, avoids that the accidents such as burn or explode occur；The valve can be widely used in liquefied petroleum feed-line, natural Letter shoot line, waterline, the Fang Fang such as fluid circuit, domestic gas pipeline and oxygen cutting gas supply line in engineering experiment In the fluid feed line in face face.

Detailed description of the invention

It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.

Fig. 1 is schematic view of the front view of the invention.

Fig. 2 is partial structural diagram at I in Fig. 1.

Fig. 3 is partial structural diagram at II in Fig. 1.

Fig. 4 is A-A cross-sectional view in Fig. 1.

Fig. 5 is sealing valve and stem structure schematic diagram in embodiment.

Fig. 6 is top view of the invention.

Fig. 7 is right view of the invention.

In attached drawing: 1- valve tube body, 2- switch trigger gear, 21- compression cylinder, 22- spring, 23- movable lug, 24- gag lever post, 25- card handle, 3- valve switch, 31- sealing valve, 311- valve opening, 32- reset transmission device, 321- valve rod, 322- handle, 323- Support shank, 324- torsional spring, 325- stop collar, 326- gland, 33- cushion, 34- valve seat, 35- plain cushion, 4- screw, 51- first are close Seal, the second sealing ring of 52-, 6- limit plate, 7- pin hole.

Specific embodiment

It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention It encloses.

In the description of the present application, it is to be understood that the instruction such as term "inner", "outside", "upper", "lower", "top", "bottom" Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it is not considered as limiting the invention.

As shown in figs. 1-7, a kind of valve that can be automatically closed, including valve tube body 1, switch trigger gear 2 and valve are opened Close 3；The switch trigger gear 2 includes compression cylinder 21, spring 22, movable lug 23, gag lever post 24 and card handle 25, the compression cylinder 21 It is installed on valve tube body 1 and is connected with 1 inner flow passage of valve tube body, pass through screw 4 between compression cylinder 21 and valve tube body 1 It is fixedly mounted, spring 22 and movable lug 23 is equipped with inside compression cylinder 21, movable lug 23 is equipped with gag lever post 24, and movable lug 23 can compress It is moved in cylinder 21, the top of gag lever post 24 can be pierced by the top of compression cylinder 21 to limit the rotation of card handle 25, the top of compression cylinder 21 End is equipped with the limit plate 6 positioned for card handle 25, and card handle 25 and limit plate 6 are equipped with corresponding for installing the pin hole of pin 7；The valve switch 3 includes sealing valve 31 and resets transmission device 32, and sealing valve 31 is installed on inside valve tube body 1, is resetted Transmission device 32 includes valve rod 321, handle 322, support shank 323 and torsional spring 324, one end insertion valve tube body 1 of valve rod 321 Tube wall is connect with sealing valve 31, and the valve rod 321 in 1 tube wall of valve tube body is equipped with stop collar 325, stop collar 325 1 outer wall of valve tube body at place is equipped with gland 326, and the other end of valve rod 321 is connect with card handle 25, and handle 322 is mounted on valve rod On 321, support shank 323 is mounted on 21 outer wall of compression cylinder, and torsional spring 324 is equipped between valve rod 321, handle 322 and support shank 323, After gag lever post 24 discharges card handle 25, under the action of torsional spring 324, the rotation of valve rod 321 is rotated with band seal valve 31, thus every Disconnected 1 inner flow passage of valve tube body, is able to rotate valve rod 321 by handle 322 to assist Open valve, gland 326 can prevent valve rod 321 move along long axis；The valve can be resetted in isolating valve tube body 1 using change in fluid pressure automatic trigger valve switch 3 Portion's runner, block fluid continue to flow, and prevent fluid from continuing to leak, prevent the wasting of resources, avoid that the things such as burn or explode occur Therefore.

In the present embodiment, the sealing valve 31 is the globe valve equipped with valve opening 311, and the both ends of globe valve are equipped with for cooperating Globe valve seals the cushion 33 of runner, is equipped with valve seat 34 and plain cushion 35, valve seat 34 and 1 inner wall spiral shell of valve tube body in valve tube body 1 Line connection, valve seat 34 is for installing and limiting cushion 33 and plain cushion 35；Rotation spherical valve, the through-hole phase of valve opening 311 and cushion 33 When connection, fluid can flow through valve, and when valve opening 311 and the through-hole of cushion 33 are not communicated with, globe valve cooperates with cushion 33 to separate Runner.

In the present embodiment, the movable lug 23 is equipped with the first sealing ring 51 for preventing fluid from leaking, on the stop collar 325 Equipped with the second sealing ring 52 for preventing fluid from leaking.

The working principle of the present embodiment: when installation valve, in the both ends access fluid feed line of valve tube body 1, pass through 322 rotation valve rod 321 of handle, while torsional spring 324 generates torsion force between valve rod 321, handle 322 and support shank 323, Card handle 25 is rotated with valve rod 321, and card handle 25 turns at limit plate 6, and is inserted into the position of pin locking card handle 25, fluid line In be passed through fluid after, fluid enters valve and fills the compression cylinder 21 of valve, and Fluid pressure is greater than 22 elastic force of spring, and is flowing Under the action of body pressure, 23 compressed spring 22 of movable lug, movable lug 23 drives gag lever post 24 mobile, and gag lever post 24 is through compression cylinder 21 Card handle 25 is limited behind top, card handle 25 is limited after bar 24 limits and takes out pin, and valve is kept it turned on；When with valve tube body When 1 connected fluid line causes fluid to leak because there is situations such as rupturing, fall off or burning, 1 internal flow pressure of valve tube body Power reduces, and the Fluid pressure in compression cylinder 21 reduces, and when Fluid pressure is less than 22 elastic force of spring, spring 22, which is stretched and driven, lives Tongue 23 is mobile, and gag lever post 24 is mobile with movable lug 23 and enters in compression cylinder 21, after card handle 25 discharges, under 324 active force of torsional spring Valve rod 321 rotates, 31 isolating valve tube body of sealing valve, 1 inner flow passage, fluid is truncated；The valve can utilize change in fluid pressure Automatic trigger valve switch 3 is resetted with 1 inner flow passage of isolating valve tube body, and block fluid continues to flow, and prevents fluid from continuing to let out Leakage, prevents the wasting of resources, avoids that the accidents such as burn or explode occur.

In specification of the invention, numerous specific details are set forth.It is to be appreciated, however, that the embodiment of the present invention can be with It practices without these specific details.In some instances, well known method, structure and skill is not been shown in detail Art, so as not to obscure the understanding of this specification.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal Replacement；And these are modified or replaceed, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution It encloses, should all cover within the scope of the claims and the description of the invention.

Claims

1. a kind of valve that can be automatically closed, it is characterised in that: opened including valve tube body (1), switch trigger gear (2) and valve It closes (3)；The switch trigger gear (2) includes compression cylinder (21), spring (22), movable lug (23), gag lever post (24) and card handle (25), the compression cylinder (21) is installed on valve tube body (1) and is connected with valve tube body (1) inner flow passage, compression cylinder (21) internal to be equipped with spring (22) and movable lug (23), movable lug (23) is equipped with gag lever post (24), card handle (25) and valve switch (3) It is connected, movable lug (23) can move in compression cylinder (21), and the top of gag lever post (24) can be pierced by the top of compression cylinder (21) To limit card handle (25) rotation, card handle (25) can be rotated synchronously with valve switch (3) at end.

2. a kind of valve that can be automatically closed according to claim 1, it is characterised in that: the compression cylinder (21) and valve It is fixedly mounted between tube body (1) by screw (4).

3. a kind of valve that can be automatically closed according to claim 1, it is characterised in that: the movable lug (23) is equipped with anti- The first sealing ring (51) of fluid stopping body leakage.

4. a kind of valve that can be automatically closed according to claim 1, it is characterised in that: the valve switch (3) includes Sealing valve (31) and reset transmission device (32), sealing valve (31) are installed on valve tube body (1) inside, reset transmission device (32) Including valve rod (321), handle (322), support shank (323) and torsional spring (324), one end insertion valve tube body (1) of valve rod (321) Tube wall and connect with sealing valve (31), the other end of valve rod (321) is connect with card handle (25), and handle (322) is installed on valve rod (321) on, support shank (323) is installed on compression cylinder (21) outer wall, between valve rod (321), handle (322) and support shank (323) Equipped with torsional spring (324).

5. a kind of valve that can be automatically closed according to claim 4, it is characterised in that: the sealing valve (31) be equipped with The globe valve of valve opening (311), the both ends of globe valve are equipped with the cushion (33) for cooperating globe valve sealing runner.

6. a kind of valve that can be automatically closed according to claim 5, it is characterised in that: set in the valve tube body (1) There are valve seat (34) and plain cushion (35), valve seat (34) is connect with valve tube body (1) inner thread.

7. a kind of valve that can be automatically closed according to claim 4, it is characterised in that: be located at valve tube body (1) tube wall The interior valve rod (321) is equipped with stop collar (325), and valve tube body (1) outer wall at stop collar (325) is equipped with gland (326).

8. a kind of valve that can be automatically closed according to claim 7, it is characterised in that: set on the stop collar (325) There is the second sealing ring (52) for preventing fluid from leaking.