CN116146758A

CN116146758A - Gas self-closing valve and gas equipment

Info

Publication number: CN116146758A
Application number: CN202211088486.XA
Authority: CN
Inventors: 马斌; 徐晓丽; 许喆
Original assignee: Shaanxi Datang Gas Safety Technology Co ltd
Current assignee: Shaanxi Datang Gas Safety Technology Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-05-23

Abstract

The utility model discloses a gas self-closing valve, gas equipment, wherein, gas self-closing valve includes: the valve body is internally provided with a protection component which is arranged in a flow passage of the valve body; the inlet end of the timing assembly is communicated with the flow channel, and the outlet end of the timing assembly is communicated with the external air end; wherein the timing assembly comprises: a timer and a sealer; the timer is arranged separately from the flow channel, and the position of the force application end of the timer is opposite to the position of the sealer; according to the self-closing valve, the timing assembly is configured, the timing function of the timer is utilized to set the time for using the fuel gas for a user, after the set time is finished, the sealer closes the flow channel of the self-closing valve, and then the function of closing a fuel gas passage is achieved.

Description

Gas self-closing valve and gas equipment

Technical Field

The disclosure relates to the technical field of gas self-closing valves, in particular to a gas self-closing valve and gas equipment.

Background

The fuel gas is widely used at present, and because the fuel gas has the characteristics of inflammability, explosiveness, poisoning and the like, if the fuel gas leaks, major safety accidents are easily caused, so that the fuel gas entering the fuel gas appliance needs to be ensured to be kept at normal pressure, so that the fuel gas can be fully and stably combusted, and at present, a fuel gas self-closing valve is arranged in front of the fuel gas appliance, so that the valve is automatically closed when in overpressure or under-pressure, and the fuel gas leakage is prevented.

In the patent application number of CN202221040102.2, named as a gas self-closing valve for a gas pipe network, the disclosed gas self-closing valve comprises: a gas self-closing valve; the connecting cylinder is fixedly connected with one side of the gas self-closing valve through a connecting pipe, a communication groove is formed in the connecting cylinder, and a connecting shaft is rotationally connected between the top and the bottom of the inner wall of the communication groove. According to the gas self-closing valve for the gas pipe network, the connecting shaft is driven to rotate through the rotating handle, so that the switching cylinder is driven to rotate through threads outside the connecting shaft, and the connecting block drives the sealing gasket to lift through the limitation of the inner wall of the communicating groove, so that a person can control and adjust the gas flow inside the connecting pipe through the rotating handle, the person can adjust and control the gas flow according to the self requirement, and meanwhile, when the gas self-closing valve fails, the person can seal the pipeline through rotating the rotating handle, and the practicability of the gas self-closing valve is effectively improved.

However, when the user uses the existing gas self-closing valve, the gas flow is regulated for use, and the user often forgets or ignores the phenomenon of closing the manual valve after the gas use is finished, so that the gas self-closing valve is light in dry burning and leaks in heavy state, and accidents are caused; it is often reported that toxic, fire or explosion disasters occur due to leakage caused by forgetting to shut down fuel gas or not shutting down the fuel gas in place, or damage and falling of a rubber pipe.

Therefore, the existing gas self-closing valve still has potential safety hazards, and therefore, the gas self-closing valve with a timing function needs to be provided.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The present disclosure aims to provide a gas self-closing valve with a timing function, so as to overcome the problems that the gas self-closing valve does not have the timing function due to the limitation and the defect of the related art to at least a certain extent, and the manual valve is forgotten or ignored to be closed after the gas use is finished, so that the gas self-closing valve has potential safety hazard.

Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.

According to a first aspect of the present disclosure, there is provided a gas self-closing valve comprising:

the valve body is internally provided with a protection component which is arranged in a flow passage of the valve body and is used for closing the flow passage of the valve body when the valve body has overpressure, underpressure and overcurrent;

the inlet end of the timing assembly is communicated with the flow channel, and the outlet end of the timing assembly is communicated with the external air end;

wherein the timing assembly comprises: a timer and a sealer; the timer is arranged at a separation from the flow channel, and the position of the force application end of the timer is opposite to the position of the sealer;

when the timer works, the force application end presses the sealer to open the flow channel;

when the timer is not working, the force application end is separated from the sealer, and the sealer closes the flow channel.

Optionally, the device also comprises a movable joint;

the movable joint is arranged at one end of the valve body and is used for connecting the valve body to an external air inlet end so as to guide the fuel gas into the valve body.

Optionally, the movable joint includes:

the loose joint nut is provided with threads at one end and a concave cavity at the other end; the thread is used for being connected with the external air inlet end; the air inlet of the valve body is clamped with the loose joint nut through the concave cavity;

Wherein, a plurality of annular grooves are formed along the circumferential direction of the inner wall of the concave cavity, an O-shaped ring is arranged in at least one annular groove, and a C-shaped retainer ring is arranged in at least one annular groove; the O-shaped ring is used for sealing a gap between the inner wall of the concave cavity and the outer side wall of the air inlet of the valve body; the C-shaped check ring is used for clamping the air inlet of the valve body in the concave cavity.

Optionally, a lead angle is formed along the opening circumference of the cavity.

Optionally, the protection component includes:

the overcurrent device is arranged in the air inlet of the valve body and is used for closing the air inlet of the valve body when overcurrent occurs in the valve body;

the over-pressure and under-pressure protector is arranged in the valve body and can reciprocate along with the pressure of the fuel gas in the flow channel, and is used for closing the valve body when over-pressure or under-pressure occurs in the valve body.

Optionally, the overcurrent device includes:

the clamping part is in clamping connection with the air inlet of the valve body, and a gas flow passage is formed in the central part of the clamping part;

the sealing part is fixedly connected to the clamping part and is in sealing connection with the inner wall of the air inlet of the valve body, and the middle part of the sealing part is provided with a fuel gas channel;

The movable part is inserted in the gas flow passage, and the outer diameter of the movable part is smaller than the inner diameter of the gas flow passage; the other end of the movable part is elastically connected with the sealing part through a spring; the side wall of the movable part is provided with a sealing plate, the sealing plate can reciprocate in the clamping part, and the sealing plate is used for sealing the gas channel when the valve body overflows so as to close the valve body.

Optionally, the over-voltage and under-voltage protector includes:

the lifting button assembly is inserted into the valve body and can move relative to the valve body;

the film component is arranged in the valve body, and the lifting button component is fixedly connected with the film component and can drive the film component to move in the valve body;

the fixed plate is fixed in the valve body and positioned below the leather membrane component;

the magnet assembly is positioned below the leather membrane assembly, is positioned above the fixed plate, is movably connected to the fixed plate and can reciprocate in the fixed plate, the magnet assembly and the bottom end of the lifting button assembly are arranged oppositely, and one end of the magnet assembly magnetically attracts the bottom of the lifting button assembly; the other end of the magnet assembly is magnetically attracted to the fixed plate, a sliding block is fixedly connected to the bottom of the magnet assembly, and a chute is formed in the sliding block;

And the sealing component is movably connected with the magnet component through a chute on the sliding block, and the magnet component moves to drive the sealing component to move so as to open or close the valve body.

Optionally, the knob assembly includes:

the lifting button is movably connected to the top of the valve body; a conical spring is arranged in the lifting button, one end of the conical spring is clamped at the bottom of the lifting button, and the other end of the conical spring is clamped on the inner top wall of the valve body;

the lifting button cap Niu Kakou is arranged on the outer side of the lifting button cap, the lifting button cap is inserted into the valve body, the lifting button cap is positioned above the leather membrane assembly, and the lifting button cap can reciprocate relative to the valve body;

the groove is formed in the side wall of the top end of the pull rod, the pull rod is clamped in the lifting button cap through the groove, the other end of the pull rod penetrates through the membrane assembly and extends to the lower side of the membrane assembly, and the other end of the pull rod is fixedly connected with the membrane assembly; the other end of the pull rod is magnetically attracted with the magnet assembly.

Optionally, the flow channel adopts a gradual change arc structure.

Optionally, the magnet assembly includes:

A magnet; the fixing plate is used for being magnetically attracted with the bottom of the pull rod and the fixing plate respectively;

the magnet gasket is arranged in the magnet gasket, a three-flap-shaped spigot is arranged in the middle of the magnet gasket and used for being clamped with the magnet, so that the magnet is clamped in the magnet gasket, an oblique angle is arranged on the bottom surface of the magnet gasket, and the top of the magnet gasket is higher than the magnet; the magnet is magnetically attracted to the fixed plate through the bottom surface provided with the bevel angle, and a gap exists between the magnet and the bottom of the pull rod when the magnet is magnetically attracted to the bottom of the pull rod through the top of the magnet gasket and the bottom of the pull rod;

a positioning spigot is arranged at the axis part of the sliding block and used for enabling the central axis of the magnet to be collinear with the axis of the sliding block; further comprises: and after the screw is screwed with the sliding block, the screw is screwed to press the three-flap type spigot to open so that the three-flap type spigot is clamped with the magnet.

Optionally, the sealing member includes:

The sealing rod is movably connected to the inside of the valve body, an arc-shaped sliding block is arranged on the side wall of the sealing rod, the arc-shaped sliding block is matched with the chute, and the arc-shaped sliding block can slide in the chute in a reciprocating manner;

and the sealing piece is clamped at the end part of the sealing rod and moves along with the movement of the sealing rod, and when the magnet is magnetically attracted and fixed with the fixing plate, the sealing rod drives the sealing piece to seal the valve port of the valve body.

Optionally, the timing assembly further includes: a housing; the inlet end of the shell is communicated with the flow channel, a channel is arranged in the shell, and the channel is communicated with the flow channel; the sealer is used for closing or communicating the channel and is arranged inside the channel of the shell;

the timer is arranged on the side wall of the shell, and the timer is connected with the shell in a sealing way through a leather membrane; the timer indirectly presses the sealer by pressing the coating film so as to move the sealer for closing or communicating the channel.

Optionally, the timer includes:

the timing shell is fixedly connected to the side wall of the shell through a screw, and the leather membrane is positioned between the timing shell and the channel;

The timing switch is buckled at the top of the timing shell and can rotate relative to the timing shell;

the timing shaft is connected to the timing switch, the axis of the timing shaft is collinear with the axis of the timing switch, and the timing switch can drive the timing shaft to rotate;

the timing cover plate is fixedly connected to the top of the timing shell;

the positioning plate is fixedly connected in the timing shell, one end of the timing shaft sequentially penetrates through the timing cover plate and the positioning plate, and the timing shaft can rotate relative to the positioning plate and the timing cover plate; a limiting block is arranged on the side wall of the timing shaft and is positioned between the timing cover plate and the positioning plate;

the mounting plate is fixed in the timing shell and positioned below the positioning plate;

the gear is coaxially sleeved on the outer side wall of the timing shaft and rotates along with the rotation of the timing shaft;

the spiral spring is sleeved on the outer side wall of the timing shaft, one end of the spiral spring is fixedly connected with the timing shaft, the other end of the spiral spring is fixedly connected with the positioning plate, the spiral spring can be pre-tensioned by rotation of the timing shaft, and the timing shaft reversely rotates when the spiral spring releases the force generated by pre-tensioning;

The timing cam is coaxially sleeved on the outer side of the timing shaft and is positioned below the gear; a timing groove is formed in the side wall of the timing cam;

the timing plectrum is fixedly connected in the timing shell through an elastic sheet, a boss is arranged on the side wall of the timing plectrum, and the elastic sheet is used for applying force for the timing plectrum in the direction of clamping the boss in the timing groove;

the timing turning plate is connected to the bottom of the timing shell, and the timing pulling plate is positioned on one side of the timing turning plate, which is close to the timing shaft; the timing turning plate is made of elastic materials, and the timing pulling piece can drive the timing turning plate to rotate relative to the timing shell; a pressing table is arranged on the bottom surface of the timing turning plate, the pressing table is the force application end of the timer,

when the boss is clamped in the groove, the timing turning plate is tightly attached to the timing pulling piece, and the pressing table is not contacted with the sealer;

when the boss is clamped on the side wall of the timing cam and is not clamped with the groove, the timing turning plate drives the pressing table to press the sealer so as to drive the sealer to move, and then the channel is opened.

Optionally, the sealer includes:

the sealing block is fixed in the channel of the shell, is hollow in the shell and is provided with a fuel gas inlet and a fuel gas outlet;

the sealing framework is inserted into the sealing block and penetrates through the fuel gas outlet, and the top end of the sealing framework extends to the outer side of the sealing block and is positioned right below the pressing table;

the sealing gasket is coaxially fixed on the side wall of the sealing framework and is positioned below the fuel gas outlet;

the sealing spring is sleeved on the outer side of the sealing framework, one end of the sealing spring is connected with the hollow inner bottom of the sealing block, the other end of the sealing spring is connected with the side wall of the sealing framework, and the sealing spring is positioned below the sealing gasket; the seal spring is used for applying force for the seal skeleton to move towards the timer;

when the pressing table does not press the top end of the sealing framework, the sealing gasket is attached to seal the gas outlet

When the pressing table presses the top end of the sealing framework, the sealing framework moves, and then the sealing gasket is driven to be separated from the fuel gas outlet, so that the fuel gas outlet is opened.

Optionally, the valve further comprises an over-temperature cutting device which is buckled on the valve body and is positioned right above the lifting button;

The over-temperature cutoff device includes:

the connecting frame is buckled on the side wall of the valve body;

the temperature control cover is rotationally connected to the connecting frame and provided with a buckle, and can be clamped and fixed on the connecting frame through the buckle;

the locking column is movably connected in the temperature control cover through a temperature control spring, a locking hole is formed in the top of the locking column, and a transverse hole is formed in the top of the temperature control cover;

wen Kongzhu, the Wen Kongzhu is sequentially inserted into the transverse hole and the locking hole, so as to fix the locking column at the transverse hole;

one end of the temperature control spring is connected with the temperature control cover, the other end of the temperature control spring is connected with the locking column, and when the Wen Kongzhu locks the locking column at the transverse hole, the temperature control spring is compressed;

wherein, the material of locking post is fusible alloy, the melting temperature scope of locking post is: 80-120 ℃.

According to a third aspect of the present disclosure, there is provided a gas apparatus mounted with the above gas self-closing valve.

The utility model discloses a gas self-closing valve, gas equipment, wherein, gas self-closing valve includes: the valve body is internally provided with a protection component which is arranged in a flow passage of the valve body and is used for closing the flow passage of the valve body when the valve body has overpressure, underpressure and overcurrent; the inlet end of the timing assembly is communicated with the flow channel, and the outlet end of the timing assembly is communicated with the external air end; wherein the timing assembly comprises: a timer and a sealer; the timer is arranged at a separation from the flow channel, and the position of the force application end of the timer is opposite to the position of the sealer; when the timer works, the force application end presses the sealer to open the flow channel; when the timer does not work, the application of force end with the sealer separation, the sealer is closed the runner, this application utilizes the timing function of timer to set for the time of user's use gas through configuration timing subassembly, after the time of setting for finishes, the sealer just closes above-mentioned runner, and then realizes the function of closing the gas passageway, it is visible that the user can set for the live time of the gas self-closing valve of this application in advance, after the gas is ended, the sealer closes the runner of valve body voluntarily, in order to solve the problem that forgets or neglect to close manual valve and the existence potential safety hazard that leads to after the user finishes with the gas.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

FIG. 1 schematically illustrates a schematic structure of a gas self-closing valve in an exemplary embodiment of the present disclosure;

FIG. 2 schematically illustrates a schematic structural diagram of an overcurrent assembly in an exemplary embodiment of the present disclosure;

FIG. 3 schematically illustrates a schematic structure of a bail assembly in an exemplary embodiment of the present disclosure;

fig. 4 schematically illustrates a perspective view of a handle in an exemplary embodiment of the present disclosure;

fig. 5 schematically illustrates a perspective view of another knob according to an exemplary embodiment of the present disclosure;

fig. 6 schematically illustrates a structural view of a knob cap in an exemplary embodiment of the present disclosure;

Fig. 7 schematically illustrates a perspective view of a button cap according to an exemplary embodiment of the present disclosure;

FIG. 8 schematically illustrates a structural schematic of a tie rod in an exemplary embodiment of the present disclosure;

FIG. 9 schematically illustrates a schematic diagram of a prior art self-closing valve flow path in an exemplary embodiment of the present disclosure;

FIG. 10 schematically illustrates a schematic diagram of an improved flow channel in an exemplary embodiment of the present disclosure;

fig. 11 schematically illustrates a structural diagram of a conventional magnet in an exemplary embodiment of the present disclosure;

fig. 12 schematically illustrates a structural schematic of a magnet in an exemplary embodiment of the present disclosure;

FIG. 13 schematically illustrates a structural schematic of an existing tie rod in an exemplary embodiment of the present disclosure;

FIG. 14 schematically illustrates a structural schematic of a tie rod in an exemplary embodiment of the present disclosure;

fig. 15 schematically illustrates a perspective view of a magnet pallet in an exemplary embodiment of the present disclosure;

fig. 16 schematically illustrates a structural schematic of a magnet pallet in an exemplary embodiment of the present disclosure;

FIG. 17 schematically illustrates a schematic structure of a slider in an exemplary embodiment of the present disclosure;

fig. 18 schematically illustrates a structural schematic of a protection component in an exemplary embodiment of the present disclosure;

FIG. 19 schematically illustrates a partial structural schematic of a protective assembly in an exemplary embodiment of the present disclosure;

fig. 20 schematically illustrates a structural diagram of a timer in an exemplary embodiment of the present disclosure;

FIG. 21 schematically illustrates a schematic configuration of a timing blade in an exemplary embodiment of the present disclosure;

FIG. 22 schematically illustrates a timing cam configuration in an exemplary embodiment of the present disclosure;

FIG. 23 schematically illustrates a schematic diagram of a timing cam in an exemplary embodiment of the present disclosure when not in operation;

FIG. 24 schematically illustrates a timing cam in an exemplary embodiment of the present disclosure in operation;

FIG. 25 schematically illustrates a schematic configuration of a timing cam operation in an exemplary embodiment of the present disclosure as it is about to complete;

FIG. 26 schematically illustrates a partial structural schematic of a sealer in an exemplary embodiment of the present disclosure;

FIG. 27 schematically illustrates a schematic structural view of a sealer in an exemplary embodiment of the present disclosure;

fig. 28 schematically illustrates a structural schematic view of an over-temperature cut-off device in an exemplary embodiment of the present disclosure;

fig. 29 schematically illustrates an open structure of an over-temperature cut-off device in an exemplary embodiment of the present disclosure;

FIG. 30 schematically illustrates a schematic diagram of a separation structure of an over-temperature cut-off device in an exemplary embodiment of the present disclosure;

FIG. 31 schematically illustrates a schematic structural view of a connector in an exemplary embodiment of the present disclosure;

FIG. 32 schematically illustrates a schematic view of an installation structure of an over-temperature cut-off device on a gas self-closing valve in an exemplary embodiment of the present disclosure;

fig. 33 schematically illustrates an internal structural diagram of a timing assembly in an exemplary embodiment of the present disclosure.

Reference numerals: 1. a valve body; 2. a flow passage; 3. a loose joint nut; 4. a thread; 5. a cavity; 6. an annular groove; an "O" ring; a "C" shaped retainer ring; 9. a lead angle; 10. a clamping part; 11. a gas flow passage; 12. a sealing part; 13. a movable part; 14. a spring; 15. a sealing plate; 16. a gas passage; 17. a film assembly; 18. a fixing plate; 19. a slide block; 20. a chute; 21. a lifting button; 22. a conical spring; 23. a button cap is lifted; 24. a pull rod; 25. a groove; 26. a magnet; 27. a magnet spacer; 28. three-flap type spigot; 29. bevel angle; 30. positioning the spigot; 31. tightening the screw; 32. a sealing rod; 33. a sealing sheet; 34. a housing; 35. a channel; 36. a coating film; 37. a timing housing; 38. a screw; 39. a timing switch; 40. a timing shaft; 41. a timing cover plate; 42. a positioning plate; 43. a limiting block; 44. a mounting plate; 45. a gear; 46. a spiral spring; 47. a timing cam; 48. a timing groove; 49. timing plectrum; 50. an elastic sheet; 51. a boss; 52. a timing turning plate; 53. a pressing table; 54. a sealing block; 55. hollow; 56. a gas inlet; 57. a gas outlet; 58. sealing the framework; 59. a sealing gasket; 60. a seal spring; 61. a connecting frame; 62. a temperature control cover; 63. a buckle; 64. locking the column; 65. a locking hole; 66. a transverse hole; 67. wen Kongzhu; 68. a temperature control spring; 69. a movable joint. 70. A timer; 71. and an overcurrent assembly.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.

The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

The invention relates to the technical field of gas self-closing valves, in particular to a gas self-closing valve capable of achieving timing automatic closing and over-temperature automatic closing.

At present, the pipeline gas self-closing valve is arranged on an indoor gas pipeline and has the functions of automatic overpressure closing, automatic undervoltage closing and automatic overcurrent closing; the flow-through component 71 installed inside the self-closing valve can only realize the detection of certain flow leakage and the feedback valve closing function, and does not have the detection function of very small leakage; therefore, the tiny leakage on the pipeline at the rear end of the self-closing valve cannot play a role in sensitively closing the valve.

Meanwhile, the phenomenon that a user forgets or ignores to close the manual valve after gas consumption is finished often occurs, and the manual valve is dry-burned when the user is light and leaks when the user is heavy, so that accidents are caused; it is often reported that toxic, fire or explosion disasters occur due to leakage caused by forgetting to shut down fuel gas or not shutting down the fuel gas in place, or damage and falling of a rubber pipe.

The existing products in the market are common self-closing valves, and can not realize micro-leakage closing valves, or the self-closing valves are used by using timing valves to realize timing switch, but the self-closing valves do not have the functions of overpressure automatic closing, undervoltage automatic closing, overflow closing and the like, and the self-closing valves do not meet the national indoor gas use standard, and the indoor gas users are required to be additionally provided with the gas self-closing valves.

Based on the description of the prior art, the gas self-closing valve currently on the market has the following drawbacks:

1. the user neglects or forgets to close the manual valve, and the pipeline is broken, and the joint is loose, so that the risk of air leakage exists.

2. When a small leakage occurs, the valve is normally open and cannot be automatically closed.

3. The independent timing valve has single function and does not meet the national standard requirement.

4. The existing movable joint of the gas valve is connected with the galvanized steel pipe through the adapter after being connected.

The invention solves the following technical problems in view of the above disadvantages:

1. the timing function is added on the basis of the original function of the self-closing valve.

2. The timing function and the original function of the self-closing valve are designed in parallel and run independently.

3. The timing function replaces the original manual valve, can realize timing switch, can also realize reverse shielding timing function, and only realizes the switching function.

4. The valve with new loose joint can be directly connected with galvanized steel pipe.

Meanwhile, through the modularized design, an over-temperature automatic cutting device can be optionally arranged, and the valve is automatically closed after the over-temperature is achieved.

Based on the above conception, the technical scheme of the application is provided, and the technical scheme is as follows:

according to a first aspect of the present disclosure, referring to fig. 1, there is provided a gas self-closing valve, comprising: the valve body 1 is internally provided with a protection component, the protection component is arranged in the flow channel 2 of the valve body 1, and the protection component is used for closing the flow channel 2 of the valve body 1 when the valve body 1 has overpressure, underpressure and overcurrent; the inlet end of the timing assembly is communicated with the flow channel 2, and the outlet end of the timing assembly is communicated with the external air end; wherein the timing assembly comprises: a timer 70, a sealer; the timer 70 is arranged separately from the flow channel 2, and the position of the force application end of the timer 70 is opposite to the position of the sealer; when the timer 70 works, the force application end presses the sealer to open the flow channel 2; when the timer 70 is not operated, the force application end is separated from the sealer, which closes the flow passage 2.

In this example embodiment, a gas self-closing valve, a gas device of the present disclosure, wherein the gas self-closing valve includes: the valve body 1 is internally provided with a protection component, the protection component is arranged in the flow channel 2 of the valve body 1, and the protection component is used for closing the flow channel 2 of the valve body 1 when the valve body 1 has overpressure, underpressure and overcurrent; the inlet end of the timing assembly is communicated with the flow channel 2, and the outlet end of the timing assembly is communicated with the external air end; wherein the timing assembly comprises: a timer 70, a sealer; the timer 70 is arranged separately from the flow channel 2, and the position of the force application end of the timer 70 is opposite to the position of the sealer; when the timer 70 works, the force application end presses the sealer to open the flow channel 2; when the timer 70 does not work, the force application end is separated from the sealer, the sealer closes the flow passage 2, the time for using fuel gas for a user is set by the timing function of the timer 70 through the configuration of the timing component, after the set time is over, the sealer closes the flow passage 2, and then the function of closing a fuel gas passage is realized.

In one embodiment, referring to FIG. 2, a union 69 is also included; the movable joint 69 is disposed at one end of the valve body 1, and is used for connecting the valve body 1 to an external air inlet end so as to guide the fuel gas into the valve body 1.

In the present exemplary embodiment, the loose-joint nut 3 is provided with threads 4 at one end and a cavity 5 at the other end; the thread 4 is used for being connected with the external air inlet end; the air inlet of the valve body 1 is clamped with the loose joint nut 3 through the concave cavity 5; wherein, a plurality of annular grooves 6 are formed along the circumferential direction of the inner wall of the concave cavity 5, an O-shaped ring 7 is arranged in at least one annular groove 6, and a C-shaped retainer ring 8 is arranged in at least one annular groove 6; the O-shaped ring 7 is used for sealing a gap between the inner wall of the concave cavity 5 and the outer side wall of the air inlet of the valve body 1; the C-shaped check ring 8 is used for clamping the air inlet of the valve body 1 in the concave cavity 5; a lead-in angle 9 is arranged along the opening circumference of the concave cavity 5.

Specifically, the movable joint 69 in the application mainly comprises a movable joint nut 3, an O-shaped ring 7, a C-shaped retainer ring 8 and a combination, and particularly comprises a leading angle 9, an annular groove 6 and a limiting end face.

The movable connection structure of the accessories of the existing gas valve is characterized in that a rubber pad is adopted for end face tightening and sealing, the axial guiding length of the upper shell and the lower shell is shorter, the movable connection structure is easy to be stressed and loosened in installation and use, air leakage is caused, and meanwhile, when the movable connection structure is connected with the end face of a galvanized steel pipe in an uneven mode, the movable connection structure is connected with the end face of the galvanized steel pipe through an adapter, so that the number of parts and the structural length are increased; the movable joint 69 provided by the invention is in sealing connection with the air inlet of the valve body 1 by adopting the O-shaped ring 7, so that the guiding and positioning length is increased, and the leakage after the lateral stress is avoided.

The threaded 4 connecting end of the loose joint nut 3 can be sealed by adopting sealing pipe threaded fit, and the transfer is not required; meanwhile, the loose-joint nut 3 can be an internal thread or an external thread, so that the limitation that the original loose-joint structure can only be the internal thread is solved.

The C-shaped retainer ring 8 is adopted for fixing and clamping and preventing the retainer ring 8 from falling out, the C-shaped retainer ring 8 is sleeved in the annular groove 6 on the inner wall of the air inlet of the valve body 1 in advance during installation, then the air inlet of the valve body 1 is pushed into the concave cavity 5 of the loose joint nut 3, the C-shaped retainer ring 8 is forced to shrink along the introduction angle 9, and the retainer ring enters the annular groove 6 of the loose joint nut 3 after being pushed to the limiting end surface and is released and opened under the action of elasticity, so that the clamping and preventing effect is achieved, and meanwhile, the movable joint nut can rotate circumferentially.

In one embodiment, referring to fig. 1 and 2, the protection assembly includes: the overcurrent device is arranged in the air inlet of the valve body 1 and is used for closing the air inlet of the valve body 1 when overcurrent occurs in the valve body 1; the over-pressure and under-pressure protector is arranged in the valve body 1 and can reciprocate along with the pressure of the fuel gas in the flow channel 2, and is used for closing the valve body 1 when the over-pressure or under-pressure occurs in the valve body 1.

In one embodiment, referring to fig. 2, the overcurrent device includes: the clamping part 10 is in clamping connection with the air inlet of the valve body 1, and a gas flow passage 11 is formed in the center part of the clamping part; the sealing part 12 is fixedly connected to the clamping part 10 and is in sealing connection with the inner wall of the air inlet of the valve body 1, and a gas channel 16 is arranged in the middle of the sealing part; a movable portion 13 inserted into the gas flow passage 11 and having an outer diameter smaller than an inner diameter of the gas flow passage 11; the other end of the movable part 13 is elastically connected with the sealing part 12 through a spring 14; a sealing plate 15 is disposed on a side wall of the movable portion 13, the sealing plate 15 can reciprocate in the clamping portion 10, and the sealing plate 15 is used for sealing the gas channel 16 when the valve body 1 flows through so as to close the valve body 1.

In this example embodiment, during the use, the gas enters the above-mentioned flow-through assembly 71 through the movable joint 69, and enters the flow-through assembly 71 through the gas flow channel 11 of the flow-through assembly 71, the movable portion 13 is driven by the sealing plate 15 to slide toward the right side of fig. 2 under the pressure of the gas, at this time, the sealing plate 15 moves toward the end portion of the gas channel 16 opened on the sealing portion 12, when the gas flow is normal, there is a gap between the sealing plate 15 and the gas channel 16, the gas can flow into the valve body 1 through the gas channel 16, at this time, the valve body 1 works normally, when the gas flow is over-flowing, the gas pushes the sealing plate 15 to move and seal the end portion of the gas channel 16, at this time, the flow-through assembly 71 closes the gas inlet of the valve body 1, and the valve body 1 is in the closed state. The spring force of the spring 14 in the above-mentioned over-current module 71 determines the limitation of the over-current, and the over-current module 71 of the present application may be configured with the spring 14 of the corresponding specification by referring to the national standard, and the specification and model of the spring 14 are not limited in the present application.

In one specific embodiment, the over-voltage and under-voltage protector includes: the lifting button assembly is inserted into the valve body 1 and can move relative to the valve body 1; the film assembly 17 is arranged in the valve body 1, and the lifting button assembly is fixedly connected with the film assembly 17 and can drive the film assembly 17 to move in the valve body 1; a fixing plate 18 fixed inside the valve body 1 and positioned below the film member 17; the magnet assembly is positioned below the leather membrane assembly 17 and above the fixed plate 18, is movably connected to the fixed plate 18 and can reciprocate in the fixed plate 18, the magnet assembly is arranged opposite to the bottom end of the lifting button assembly, and one end of the magnet assembly magnetically attracts the bottom of the lifting button assembly; the other end of the magnet assembly magnetically attracts the fixed plate 18, a sliding block 19 is fixedly connected to the bottom of the magnet assembly, and a chute 20 is formed in the sliding block 19; the sealing component is movably connected with the magnet component through a chute 20 on the sliding block 19, and the magnet component moves to drive the sealing component to move so as to open or close the valve body 1.

In the present exemplary embodiment, the diaphragm assembly 17 divides the interior of the valve body 1 into two parts, the upper part of which is a back pressure chamber and the lower part of which is a pressure regulating chamber; when the valve body 1 is in a ventilation state, a magnetic attraction force is arranged between one end of the magnet assembly and the lifting button assembly, and a magnetic attraction force is arranged between the other end of the magnet assembly and the fixed plate 18, at the moment, the magnet assembly drives the sliding block 19 to slide, a gap exists between the magnet assembly and the bottom end of the lifting button assembly, a gap exists between the magnet assembly and the fixed plate 18, and the magnet assembly drives the sliding block 19 to slide between the fixed plate 18 and the lifting button assembly; at this time, the valve body 1 is opened, and the fuel gas normally flows through the valve body 1.

When the pressure is exceeded, the gas pressure in the pressure regulating cavity increases, at this moment, the pressure of gas promotes the involucra subassembly 17 to upwards remove, the distance between the bottom of the pull rod 24 of knob subassembly and the magnet subassembly increases, the magnetic attraction effort reduces, at this moment, under the dead weight of the magnetic attraction effort between magnet 26 and fixed plate 18 and the dead weight of magnet subassembly, the dead weight effect of slider 19, magnet 26 moves towards fixed plate 18, until magnet subassembly and fixed plate 18 actuation, slider 19 moves to the bottom of valve body 1, slider 19 drives sealing component through chute 20 and moves right, make sealing component seal above-mentioned valve body 1, and then close the gas self-closing valve in this application.

When under pressure, the pressure in the pressure regulating chamber reduces, the involucra subassembly 17 moves downwards in valve body 1, at this moment, involucra subassembly 17 drives the pull rod 24 in the lifting button subassembly and moves downwards, thereby reduce the distance between the bottom of pull rod 24 and the magnet subassembly, make magnet subassembly lose balance, the bottom actuation of magnet subassembly and pull rod 24, at this moment, under the dead weight effort of pull rod 24 and magnet subassembly, the dead weight effort of slider 19, magnet subassembly drives pull rod 24 and moves downwards, until magnet subassembly and fixed plate 18 actuation, after the two actuation, slider 19 moves to the bottom of valve body 1, slider 19 drives sealing member through chute 20 and moves to the right, make sealing member seal above-mentioned valve body 1, and then close the gas self-closing valve in this application.

During resetting, the lifting button assembly is pressed down to enable the bottom of the pull rod 24 to move towards the magnet assembly attracted on the fixed plate 18 until the bottom of the pull rod 24 is attracted with the magnet assembly, then the lifting button assembly is pulled upwards, the magnet assembly is separated from the fixed plate 18 under the driving of the lifting button assembly, a gap is formed between the magnet assembly and the fixed plate 18, the lifting button assembly is pulled upwards continuously, the sliding block 19 below the magnet assembly is clamped on the bottom surface of the fixed plate 18, at the moment, the lifting button assembly is pulled continuously again, the magnet assembly is separated from the bottom of the pull rod 24, then the lifting button assembly is released, at the moment, the lifting button assembly moves back and forth in the valve body 1 under the driving of the film assembly 17, and moves back pressure cavity along with the difference value of acting force between the bottom of the pull rod 24 and the fixed plate 18, at the moment, the valve body 1 is opened, and fuel gas normally passes through the valve body 1.

Therefore, the ultra-low voltage protector has the function of closing the valve body 1 when the valve body 1 is in overpressure or under-pressure, so that the use safety of the gas self-closing valve is improved.

In one embodiment, referring to fig. 3, the knob assembly includes: a lifting button 21 movably connected to the top of the valve body 1; a conical spring 22 is arranged in the lifting button 21, one end of the conical spring 22 is clamped at the bottom of the lifting button 21, and the other end is clamped on the inner top wall of the valve body 1; a lifting button cap 23, wherein the lifting button 21 is buckled 63 on the outer side of the lifting button cap 23, the lifting button cap 23 is inserted into the valve body 1, the lifting button cap 23 is positioned above the film assembly 17, and the lifting button cap 23 can reciprocate relative to the valve body 1; the pull rod 24 is provided with a groove 25 on the side wall of the top end of the pull rod 24, the pull rod 24 is clamped in the lifting button cap 23 through the groove 25, the other end of the pull rod 24 penetrates through the membrane assembly 17 and extends to the lower side of the membrane assembly 17, and the other end of the pull rod 24 is fixedly connected with the membrane assembly 17; the other end of the pull rod 24 is magnetically attracted to the magnet assembly.

In this example embodiment, the knob assembly mainly includes a knob 21, a conical spring 22, a pull rod 24, and a knob cap 23, symmetrical chamfer angles are provided on the knob 21, and symmetrical pulling notches are provided on the knob cap 23 in particular, so that the knob 21 and the knob cap 23 are clamped, specifically, referring to fig. 4, a three-flap buckle 63 is provided in the middle of the knob 21 for clamping the knob cap 23, and a notch is provided on the knob cap 23 correspondingly to cooperate with the three-flap buckle 63 of the knob 21, so that the three-flap buckle 63 of the knob 21 is clamped in the notch of the knob cap 23, and then the knob 21 is connected with the knob cap 23, so that the knob cap 23 can be pulled or pressed by the knob 21 to slide on the valve body 1.

In the present exemplary embodiment, the original lifting button 21 and the lifting button cap 23 are structured such that the lifting button cap 23 is exposed, so that a user can directly lift the lifting button cap 23 to cause an abnormal valve; when the structure is normally closed, the lifting button cap 23 is arranged in the hole of the lifting button 21, a user cannot directly operate the lifting button cap 23, when the lifting button cap 23 is required to be specially lifted for indoor air tightness detection, the lifting button cap 23 can be rotated, the notch on the lifting button cap 23 is aligned with the chamfer of the lifting button 21, the notch is exposed, and the lifting button cap 23 can be directly lifted for indoor security inspection.

In this example embodiment, referring to fig. 4 to 8, the lifting button assembly provided in the present application enables the three-flap type buckle 63 on the lifting button 21 to be hung in the upper cover of the valve body 1 by pressing the lifting button 21, so as to ensure that the three-flap type buckle does not fall out, and then the large end of the conical spring 22 is installed inwards.

When the pull rod 24 is installed, the lead angle passes through the inner hole of the pull rod cap 23, so that the three-flap buckle 63 of the pull rod cap 23 enters the pull rod 24 groove 25, no escape is guaranteed, compared with the original pull rod 21 structure, the pull rod assembly has fewer structural parts, the pull rod assembly is in modularized design and is connected through various parts in a clamping manner, and then the pull rod assembly is assembled to form the pull rod assembly of the valve.

In one embodiment, the flow channel 2 adopts a gradual arc structure.

In this exemplary embodiment, referring to fig. 9, fig. 9 shows a flow passage 2 of a conventional gas self-closing valve, and as can be seen from fig. 9, the conventional gas flow passage 11 of the self-closing valve is designed to be vertically shielded more, and a larger pressure loss is generated, thereby reducing the flow rate of the product.

Referring to fig. 10, fig. 10 shows a structure provided by the present invention, in which, compared with a flow channel 2 of a conventional gas self-closing valve, the flow channel 2 of the gas self-closing valve is designed to have a gradual arc structure, so that the gas flow is gradually increased and then gradually decreased; the pressure loss is prevented from being increased due to the conditions of suddenly turning, suddenly becoming larger, suddenly shrinking and the like.

In one embodiment, the magnet assembly includes: a magnet 26; for magnetically attracting the bottom of the pull rod 24 and the fixing plate 18, respectively; the magnet gasket 27, the magnet 26 is arranged in the magnet gasket 27, a three-flap spigot 28 is arranged in the middle of the magnet gasket 27 and used for clamping the magnet 26, so that the magnet 26 is clamped in the magnet gasket 27, an oblique angle 29 is arranged on the bottom surface of the magnet gasket 27, and the top of the magnet gasket 27 is higher than the magnet 26; the magnet 26 is magnetically attracted to the fixed plate 18 through the bottom surface provided with the bevel 29, and is magnetically attracted to the bottom of the pull rod 24 through the top of the magnet gasket 27, and when the magnet 26 is magnetically attracted to the bottom of the pull rod 24, a gap exists between the magnet 26 and the bottom of the pull rod 24; a positioning spigot 30 is arranged at the axis position of the slide block 19 and is used for making the central axis of the magnet 26 and the axis of the slide block 19 be collinear; further comprises: and one end of the tightening screw 31 penetrates through the three-flap-shaped spigot 28 and is in threaded connection with the sliding block 19, and after the tightening screw 31 is in threaded connection with the sliding block 19, the tightening screw 31 presses the three-flap-shaped spigot 28 to open so that the three-flap-shaped spigot 28 is clamped with the magnet 26.

In this exemplary embodiment, referring to fig. 11-19, the present application proposes a new magnet assembly, and in particular, the magnet assembly of the present application is described in detail with reference to the accompanying drawings, which are specifically as follows:

referring to FIG. 11, FIG. 11 shows a schematic structural diagram of a magnet 26 for a conventional self-closing valve, wherein the magnet 26 is a conical counter bore from one end to the other end, so that a countersunk head screw 38 is convenient to install; the machining cutting amount is large, the material waste is serious, and the screw 38 is in direct contact with the magnet 26, so that the plating layer on the surface of the magnet 26 is worn out to different degrees during screwing, the service life of the magnet 26 is shortened, and the defects of matrix corrosion, cracking, suction reduction and the like are caused.

Fig. 13 is a schematic structural diagram of a pull rod 24 in a conventional self-closing valve, wherein a protruding ring belt is designed at the end of the pull rod 24 of the conventional self-closing valve to be in direct contact with a magnet 26, and in the working process of the self-closing valve, the pull rod 24 impacts the magnet 26 for many times to generate abrasion to a surface coating of the magnet 26, so that the performance of a product is reduced and the service life is shortened; meanwhile, the raised annular belt at the end part of the pull rod 24 of the original structure is low in machining efficiency and poor in dimensional stability, and the consistency of the high-pressure performance of the product is affected.

Based on the above, the present application improves the pull rod 24 and the magnet 26 of the existing self-closing valve, increases or decreases the magnet gasket 27 shown in fig. 15, and improves the structure of the magnet 26 shown in fig. 12 and the pull rod 24 shown in fig. 14, wherein the structure design adopts a convex three-flap spigot 28, a bulge and an oblique angle 29 are arranged in the middle of the magnet gasket 27; a positioning spigot 30 is arranged on the slide block 19; when the tightening screw 31 is installed, the three-piece spigot 28 in the middle of the magnet washer 27 is outwardly stretched to press the magnet 26.

In this example embodiment, fig. 17 provides a schematic structural diagram of the slider 19 of the present application, where the positioning spigot 30 of the slider 19 is matched with the inner hole of the magnet gasket 27 to realize positioning, so as to ensure the accuracy of controlling the under-pressure parameter of the self-closing valve perpendicularly to the axis of the slider 19 after the magnet 26 is installed.

Referring to fig. 16 and 19, fig. 19 is a schematic view of a mounting structure of the magnet assembly; the bevel 29 arranged on the magnet gasket 27 reduces the contact plane area after the magnet 26 is attracted to the fixed plate 18, so that the valve opening force value of the self-closing valve is reduced, and the phenomenon that the valve cannot be lifted and pulled out due to the fact that the surface is too tightly attracted is avoided; the bulges arranged on the magnet gaskets 27 ensure that the plane of the pull rod 24 is not in direct contact with the magnet 26, and the impact is avoided to influence the quality of the surface coating.

Fig. 18 is a schematic diagram of an overall assembly structure of a magnet assembly and a knob assembly provided by the present application, it can be seen that an action of the fixing plate 18 makes a movement position of the limiting slide block 19 so as to be convenient for clamping the slide block 19 when the gas self-closing valve is reset, and further ensure bottom separation of the magnet assembly and the pull rod 24, and on the other hand, the fixing plate 18 is used for being attracted with the magnet assembly, and further, when the self-closing valve is over-pressure or under-pressure is realized, the magnet assembly is attracted with the fixing plate 18 so as to drive the slide block 19 to move downwards, and further, drive a sealing component slidingly connected on the slide block 19 to move rightward to close the valve body 1.

In one embodiment, referring to fig. 1, the sealing member includes: the sealing rod 32 is movably connected to the inside of the valve body 1, an arc-shaped sliding block 19 is arranged on the side wall of the sealing rod 32, the arc-shaped sliding block 19 is matched with the chute 20, and the arc-shaped sliding block 19 can slide back and forth in the chute 20; the sealing plate 33 is clamped at the end of the sealing rod 32, and moves along with the movement of the sealing rod 32, and after the magnet 26 is magnetically attracted and fixed with the fixing plate 18, the sealing rod 32 drives the sealing plate 33 to seal the valve port of the valve body 1.

In this example embodiment, the sealing rod 32 may be slidably disposed inside the flow channel 2 of the valve body 1, and the sealing piece 33 may be clamped at an end of the sealing rod 32, and move along with the movement of the sealing rod 32, so as to open or close the flow channel 2 of the valve body 1; it should be noted that, when the magnet assembly is attracted to the fixing plate 18, the sealing rod 32 moves towards the right side as shown in fig. 1, at this time, the sealing rod 32 drives the sealing plate 33 to move to the right, and when the magnet assembly is attracted to the fixing plate 18, the sealing plate 33 is pressed against the inlet of the flow passage 2 of the valve body 1, so as to seal the flow passage 2 of the valve body 1; it can be appreciated that the above-mentioned mechanical cooperation structure, the user can be according to actual assembly process in-process design, and the size of each part carries out the self-setting, and this application does not do not limit to the specific size of each accessory mentioned above.

It should be noted that, the cooperation between the arc slide block 19 and the chute 20 adopts the cooperation of the arc surface and the plane, so that the arc slide block 19 slides in the chute 20 well, and under the driving of the chute 20, the position of the arc slide block 19 relative to the sealing rod 32 in the horizontal direction can be changed, and then the position of the sealing rod 32 in the valve body 1 along the horizontal direction can be changed, and further the function that the sealing rod 32 drives the sealing piece 33 to reciprocate is realized.

In one embodiment, referring to fig. 20, the timing assembly includes: a timer 70, a sealer, a housing 34; an inlet end of the housing 34 communicates with the flow channel 2, a channel 35 is arranged in the housing 34, and the channel 35 communicates with the flow channel 2; the sealer is used for closing or communicating with the channel 35, and is arranged inside the channel 35 of the shell 34; the timer 70 is arranged on the side wall of the shell 34, and the timer 70 is connected with the shell 34 in a sealing way through the leather film 36; the timer 70 indirectly presses the sealer by pressing the membrane 36 to move the sealer for closing or communicating the passage 35.

In one embodiment, referring to fig. 33, the timer 70 includes: a timing housing 37 fixedly connected to a side wall of the housing 34 by a screw 38, the film 36 being located between the timing housing 37 and the passage 35; a timing switch 39, a buckle 63 is arranged on the top of the timing housing 37 and can rotate relative to the timing housing 37; a timing shaft 40 connected to the timing switch 39, wherein the axis of the timing shaft 40 is collinear with the axis of the timing switch 39, and the timing switch 39 can drive the timing shaft 40 to rotate; a timing cover 41 fixedly connected to the top of the timing housing 37; the positioning plate 42 is fixedly connected in the timing housing 37, one end of the timing shaft 40 sequentially penetrates through the timing cover plate 41 and the positioning plate 42, and the timing shaft 40 can rotate relative to the positioning plate 42 and the timing cover plate 41; a limiting block 43 is arranged on the side wall of the timing shaft 40, and the limiting block 43 is positioned between the timing cover plate 41 and the positioning plate 42; a mounting plate 44 fixed inside the timing housing 37 and positioned below the positioning plate 42; the gear 45 is coaxially sleeved on the outer side wall of the timing shaft 40 and rotates along with the rotation of the timing shaft 40; the spiral spring 46 is sleeved on the outer side wall of the timing shaft 40, one end of the spiral spring is fixedly connected with the timing shaft 40, the other end of the spiral spring is fixedly connected with the positioning plate 42, the spiral spring 46 can be preloaded by rotation of the timing shaft 40, and when the spiral spring 46 releases the force generated by the preloading, the timing shaft 40 reversely rotates; a timing cam 47 coaxially sleeved on the outer side of the timing shaft 40 and positioned below the gear 45; a timing groove 48 is formed on the side wall of the timing cam 47; the timing pulling piece 49 is fixedly connected in the timing shell 37 through an elastic piece 50, a boss 51 is arranged on the side wall of the timing pulling piece 49, and the elastic piece 50 is used for applying force for the timing pulling piece 49 in a direction of clamping the boss 51 in the timing groove 48; a timing turning plate 52 connected to the bottom of the timing housing 37, wherein the timing pulling plate 49 is located at one side of the timing turning plate 52 close to the timing shaft 40; the timing turning plate 52 is made of elastic material, and the timing pulling plate 49 can drive the timing turning plate 52 to rotate relative to the timing housing 37; a pressing table 53 is arranged on the bottom surface of the timing turning plate 52, the pressing table 53 is a force application end of the timer 70, when the boss 51 is clamped in the groove 25, the timing turning plate 52 is tightly attached to the timing pulling plate 49, and the pressing table 53 is not contacted with the sealer; when the boss 51 is clamped on the side wall of the timing cam 47 and is not clamped with the groove 25, the timing turning plate 52 drives the pressing table 53 to press the sealer, so as to drive the sealer to move, and further open the channel 35.

In this exemplary embodiment, referring to fig. 20 to 22, the timer 70 is mainly composed of the timing cover 41, the positioning plate 42, the timing dial 49, the timing housing 37, the timing flap 52, the spiral spring 46, the timing switch 39, the gear 45 group, the timing shaft 40, the timing cam 47, the screw 38, and other components.

Referring to fig. 23-25, when the gas self-closing valve is in use, the timing switch 39 of the timer 70 is rotated clockwise to select timing time, in the process, the timing cam 47 on the timing shaft 40 rotates synchronously, the outer circle of the timing cam 47 is tangential to the boss 51 of the timing plectrum 49, so that the timing plectrum 49 rotates to press the timing flap 52, at this time, the pressing table 53 at the bottom of the timing flap 52 presses the top end of the sealing skeleton 58, and the sealing skeleton 58 drives the sealing gasket 59 to move downwards to open the gas outlet 57.

When the countdown is completed, the rest pretightening force of the scroll spring 46 drives the timing shaft 40 to rotate to the initial position, the boss 51 on the timing plectrum 49 is arranged in the groove 25 of the timing cam 47, the timing plectrum 49 is retracted, at the moment, the pressing table 53 under the timing turning plate 52 is separated from the sealing framework 58, the sealing framework 58 drives the sealing gasket 59 to move upwards under the elastic force of the sealing spring 60, the sealing gasket 59 seals the gas outlet 57, and at the moment, the timing valve port is closed under the action of the spring 14, and the gas source is cut off.

In one embodiment, referring to fig. 26-27 and 33, the sealer includes: a sealing block 54 fixed inside the passage 35 of the housing 34, having a hollow interior 55, and having a gas inlet 56 and a gas outlet 57; a seal frame 58 inserted into the seal block 54 and penetrating the gas outlet 57, the tip of the seal frame extending to the outside of the seal block 54 and being located directly below the pressing table 53; a gasket 59 coaxially fixed to a side wall of the seal frame 58 and positioned below the gas outlet 57; a seal spring 60 sleeved outside the seal frame 58, one end of the seal spring is connected with the inner bottom of the hollow 55 of the seal block 54, the other end of the seal spring is connected with the side wall of the seal frame 58, and the seal spring 60 is positioned below the seal pad 59; the seal spring 60 is used to apply a force to the seal skeleton 58 that moves toward the timer 70; when the pressing table 53 does not press the top end of the seal skeleton 58, the gasket 59 seals the gas outlet 57 in a fitting manner; when the pressing table 53 presses the top end of the sealing frame 58, the sealing frame 58 moves, and the sealing pad 59 is further driven to be separated from the gas outlet 57, so as to open the gas outlet 57.

In a specific embodiment, referring to fig. 28-32, the valve further comprises an over-temperature cutting device, and a buckle 63 is arranged on the valve body 1 and is positioned right above the lifting button 21; the over-temperature cutoff device includes: a connecting frame 61, a buckle 63 is arranged on the side wall of the valve body 1; the temperature control cover 62 is rotatably connected to the connecting frame 61 and provided with a buckle 63, and can be clamped and fixed on the connecting frame 61 through the buckle 63; the locking column 64 is movably connected in the temperature control cover 62 through a temperature control spring 68, a locking hole 65 is formed in the top of the locking column 64, and a transverse hole 66 is formed in the top of the temperature control cover 62; wen Kongzhu 67, wherein the Wen Kongzhu is inserted into the transverse hole 66 and the locking hole 65 in sequence, so as to fix the locking post 64 at the transverse hole 66; a temperature control spring 68 having one end connected to the temperature control cover 62 and the other end connected to the locking post 64, the temperature control spring 68 being compressed when the Wen Kongzhu 67 locks the locking post 64 at the cross hole 66; wherein, the material of the locking post 64 is a fusible alloy, and the melting temperature range of the locking post 64 is: 80-120 ℃.

In this example embodiment, install above-mentioned excess temperature cutting device, can also effectually carry out the greasy dirt protection to the self-closing valve, improved the job stabilization nature of self-closing valve.

In the present exemplary embodiment, the self-closing valve provided with the over-temperature cut-off device, the normally ventilated state temperature control spring 68 is in a compressed and energy-stored state under the locking of Wen Kongzhu 67; wen Kongzhu 67 is made of fusible alloy with low melting point, and various specifications with the melting temperature of 80-120 ℃ can be selected for use, so that the use requirements of different users are met; when the temperature near the device reaches the melting temperature of the selected temperature control column 67, the Wen Kongzhu 67 is quickly melted and unlocked, the locking function between the locking column 64 and the transverse hole 66 is lost, and the locking column 64 quickly impacts downwards under the elastic force of the temperature control spring 68 so as to act on the self-closing valve lifting button cap 23, so that the self-closing valve is quickly closed, the fuel gas is cut off, and the safety gas is ensured.

When the abnormal temperature rise in the environment is eliminated or the abnormal temperature rise is judged to be cut off by mistake, a user or a worker can rotate to open the temperature control cover 62, pull the lifting button 21 to open the self-closing valve and normally ventilate, simultaneously press the locking column 64 to press the temperature control spring 68 and lock the temperature control spring by using the standby Wen Kongzhu 67, finally fasten the upper cover, and continue normal use.

In summary, in the gas self-closing valve provided in the present embodiment, by setting the C-shaped retainer ring 8, the movable joint 69 is movably connected with the valve body 1 in a clamping manner, so that the looseness of the sealing part 12 when the movable joint is assembled and disassembled is avoided; the number of installation parts is reduced, the product height is reduced, and the materials and the labor cost are saved by arranging the lifting button assembly with the buckle 63; the flow resistance of the flow channel 2 of the valve body 1 is reduced, the flow rate is increased, and the combustion use efficiency is improved by performing arc gradual change optimization on the flow channel 2 of the valve body 1; by arranging the novel magnet 26 connecting structure, the magnet gasket 27 is added, so that the surface of the magnet 26 is effectively protected from being impacted, the corrosion resistance is improved, and the service life is prolonged; meanwhile, the use efficiency of the raw materials of the magnet 26 is improved, and the cost is saved; the timing component is configured for the gas self-closing valve, so that the self-closing valve integrates a timing function, safety protection measures are increased, and the gas consumption of a user is safer.

Therefore, the self-closing valve provided by the application integrates the timing function on the basis of the original overpressure closing, undervoltage closing and overcurrent automatic closing functions of the self-closing valve, so that the product is more flexible and safer to use and is suitable for different gas pressure working conditions; meanwhile, a timing function is added, so that gas leakage caused by the fact that a user does not close or forgets to close the manual valve is avoided. In addition, a counterclockwise rotation normally open valve is arranged on the timing structure, so that a user can use gas for a long time under special conditions such as soup cooking, and the gas use is more flexible.

According to a second aspect of the present disclosure, there is provided a gas apparatus mounted with the above gas self-closing valve.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A gas self-closing valve, comprising:

the valve comprises a valve body (1), wherein a protection component is arranged in the valve body (1), and the protection component is arranged in a flow channel (2) of the valve body (1) and is used for closing the flow channel (2) of the valve body (1) when overpressure, undervoltage and overcurrent occur in the valve body (1);

the inlet end of the timing assembly is communicated with the flow channel (2), and the outlet end of the timing assembly is communicated with the external air end;

wherein the timing assembly comprises: a timer (70), a sealer; the timer (70) is arranged separately from the flow channel (2), and the position of the force application end of the timer (70) is opposite to the position of the sealer;

when the timer (70) works, the force application end presses the sealer to open the flow channel (2);

when the timer (70) is not working, the force application end is separated from the sealer, and the sealer closes the flow channel (2).

2. The gas self-closing valve according to claim 1, further comprising a union (69);

the movable joint (69) is arranged at one end of the valve body (1) and is used for connecting the valve body (1) to an external air inlet end so as to guide fuel gas into the valve body (1).

3. The gas self-closing valve according to claim 2, wherein said union (69) comprises:

A loose joint nut (3), one end of which is provided with a thread (4) and the other end of which is provided with a concave cavity (5); the thread (4) is used for being connected with the external air inlet end; the air inlet of the valve body (1) is clamped with the loose joint nut (3) through the concave cavity (5);

wherein a plurality of annular grooves (6) are formed along the circumferential direction of the inner wall of the concave cavity (5), an O-shaped ring (7) is arranged in at least one annular groove (6), and a C-shaped check ring (8) is arranged in at least one annular groove (6); the O-shaped ring (7) is used for sealing a gap between the inner wall of the concave cavity (5) and the outer side wall of the air inlet of the valve body (1); the C-shaped check ring (8) is used for clamping the air inlet of the valve body (1) in the concave cavity (5).

4. A gas self-closing valve according to claim 3, characterized in that a lead-in angle (9) is provided along the opening circumference of the cavity (5).

5. The gas self-closing valve as recited in claim 1, wherein the protection assembly comprises:

the overcurrent device is arranged in the air inlet of the valve body (1) and is used for closing the air inlet of the valve body (1) when overcurrent occurs in the valve body (1);

the ultra-low pressure protector is arranged in the valve body (1) and can reciprocate along with the pressure of fuel gas in the flow channel (2), and is used for closing the valve body (1) when the valve body (1) has over-pressure or under-pressure.

6. The gas self-closing valve as recited in claim 5, wherein the flow restrictor comprises:

the clamping part (10) is in clamping connection with the air inlet of the valve body (1), and a gas flow passage (11) is formed in the central part of the clamping part;

the sealing part (12) is fixedly connected to the clamping part (10) and is in sealing connection with the inner wall of the air inlet of the valve body (1), and a gas channel (16) is arranged in the middle of the sealing part;

a movable part (13) which is inserted into the gas flow passage (11) and has an outer diameter smaller than the inner diameter of the gas flow passage (11); the other end of the movable part (13) is elastically connected with the sealing part (12) through a spring (14); a sealing plate (15) is arranged on the side wall of the movable part (13), the sealing plate (15) can reciprocate in the clamping part (10), and the sealing plate (15) is used for sealing the gas channel (16) when the valve body (1) overflows so as to close the valve body (1).

7. The gas self-closing valve as recited in claim 5, wherein the over-pressure and under-pressure protector comprises:

the lifting button assembly is inserted into the valve body (1) and can move relative to the valve body (1);

the film assembly (17) is arranged in the valve body (1), and the lifting button assembly is fixedly connected with the film assembly (17) and can drive the film assembly (17) to move in the valve body (1);

A fixing plate (18) fixed inside the valve body (1) and positioned below the film assembly (17);

the magnet assembly is positioned below the leather membrane assembly (17) and above the fixed plate (18), is movably connected to the fixed plate (18) and can reciprocate in the fixed plate (18), the magnet assembly is arranged opposite to the bottom end of the lifting button assembly, and one end of the magnet assembly magnetically attracts the bottom of the lifting button assembly; the other end of the magnet assembly is magnetically attracted to the fixed plate (18), a sliding block (19) is fixedly connected to the bottom of the magnet assembly, and a chute (20) is formed in the sliding block (19);

the sealing component is movably connected with the magnet component through a chute (20) on the sliding block (19), and the magnet component moves to drive the sealing component to move so as to open or close the valve body (1).

8. The gas self-closing valve as recited in claim 7, wherein the poppet assembly comprises:

a lifting button (21) is movably connected to the top of the valve body (1); a conical spring (22) is arranged in the lifting button (21), one end of the conical spring (22) is clamped at the bottom of the lifting button (21), and the other end of the conical spring is clamped on the inner top wall of the valve body (1);

The lifting button (21) is buckled (63) on the outer side of the lifting button cap (23), the lifting button cap (23) is inserted into the valve body (1), the lifting button cap (23) is positioned above the coating assembly (17), and the lifting button cap (23) can reciprocate relative to the valve body (1);

the pull rod (24) is provided with a groove (25) on the side wall of the top end of the pull rod (24), the pull rod (24) is clamped in the lifting button cap (23) through the groove (25), the other end of the pull rod (24) penetrates through the leather membrane assembly (17) and extends to the lower part of the leather membrane assembly (17), and the other end of the pull rod (24) is fixedly connected with the leather membrane assembly (17); the other end of the pull rod (24) is magnetically attracted with the magnet assembly;

the runner (2) adopts a gradual change arc structure;

the magnet assembly includes:

a magnet (26); is used for respectively magnetically attracting with the bottom of the pull rod (24) and the fixed plate (18);

the magnet gasket (27), magnet (26) set up in the inside of magnet gasket (27), the middle part of magnet gasket (27) is provided with three lamella tang (28), is used for joint magnet (26) to make magnet (26) joint in the inside of magnet gasket (27), the bottom surface of magnet gasket (27) is provided with oblique angle (29), the top of magnet gasket (27) is higher than magnet (26); the magnet (26) is magnetically attracted to the fixed plate (18) through the bottom surface provided with the bevel angle (29), and is magnetically attracted to the bottom of the pull rod (24) through the top of the magnet gasket (27), and when the magnet (26) is magnetically attracted to the bottom of the pull rod (24), a gap exists between the magnet (26) and the bottom of the pull rod (24);

A positioning spigot (30) is arranged at the axis position of the sliding block (19) and is used for enabling the central axis of the magnet (26) to be collinear with the axis of the sliding block (19); further comprises: screw (31) is screwed down, screw (31) one end runs through three lamella tang (28), and with slider (19) spiro union, screw (31) with slider (19) spiro union back, screw (31) are pressed three lamella tang (28) are opened, so that three lamella tang (28) joint magnet (26).

9. The gas self-closing valve according to claim 8, wherein said sealing member comprises:

the sealing rod (32) is movably connected to the inside of the valve body (1), an arc-shaped sliding block (19) is arranged on the side wall of the sealing rod (32), the arc-shaped sliding block (19) is matched with the chute (20), and the arc-shaped sliding block (19) can slide in the chute (20) in a reciprocating manner;

the sealing piece (33) is clamped at the end part of the sealing rod (32), moves along with the movement of the sealing rod (32), and drives the sealing piece (33) to seal the valve port of the valve body (1) after the magnet (26) and the fixing plate (18) are magnetically attracted and fixed.

10. The gas self-closing valve as recited in claim 1, wherein the timing assembly further comprises: a housing (34); an inlet end of the shell (34) is communicated with the flow channel (2), a channel (35) is arranged in the shell (34), and the channel (35) is communicated with the flow channel (2); the sealer is used for closing or communicating with the channel (35), and is arranged inside the channel (35) of the shell (34);

The timer (70) is arranged on the side wall of the shell (34), and the timer (70) is connected with the shell (34) in a sealing way through a coating film (36); the timer (70) indirectly presses the sealer by pressing the membrane (36) to move the sealer for closing or communicating the channel (35).

11. The gas self-closing valve according to claim 10, wherein the timer (70) comprises:

a timing housing (37) fixedly connected to the side wall of the housing (34) by a screw (38), the film (36) being located between the timing housing (37) and the channel (35);

a timing switch (39), a buckle (63) is arranged on the top of the timing shell (37) and can rotate relative to the timing shell (37);

the timing shaft (40) is connected to the timing switch (39), the axis of the timing shaft (40) is collinear with the axis of the timing switch (39), and the timing switch (39) can drive the timing shaft (40) to rotate;

a timing cover plate (41) fixedly connected to the top of the timing housing (37);

the positioning plate (42) is fixedly connected in the timing shell (37), one end of the timing shaft (40) sequentially penetrates through the timing cover plate (41) and the positioning plate (42), and the timing shaft (40) can rotate relative to the positioning plate (42) and the timing cover plate (41); a limiting block (43) is arranged on the side wall of the timing shaft (40), and the limiting block (43) is positioned between the timing cover plate (41) and the positioning plate (42);

A mounting plate (44) fixed inside the timing housing (37) and located below the positioning plate (42);

the gear (45) is coaxially sleeved on the outer side wall of the timing shaft (40) and rotates along with the rotation of the timing shaft (40);

the spiral spring (46) is sleeved on the outer side wall of the timing shaft (40), one end of the spiral spring is fixedly connected with the timing shaft (40), the other end of the spiral spring is fixedly connected with the positioning plate (42), the spiral spring (46) can be pre-tensioned by rotation of the timing shaft (40), and when the spiral spring (46) releases the force generated by pre-tensioning, the timing shaft (40) reversely rotates;

a timing cam (47) coaxially sleeved on the outer side of the timing shaft (40) and positioned below the gear (45); a timing groove (48) is formed in the side wall of the timing cam (47);

the timing poking piece (49) is fixedly connected in the timing shell (37) through an elastic piece (50), a boss (51) is arranged on the side wall of the timing poking piece (49), and the elastic piece (50) is used for applying force for the timing poking piece (49) in the direction of enabling the boss (51) to be clamped in the timing groove (48);

the timing turning plate (52) is connected to the bottom of the timing shell (37), and the timing pulling piece (49) is positioned on one side, close to the timing shaft (40), of the timing turning plate (52); the timing turning plate (52) is made of elastic materials, and the timing pulling sheet (49) can drive the timing turning plate (52) to rotate relative to the timing shell (37); a pressing table (53) is arranged on the bottom surface of the timing turning plate (52), and the pressing table (53) is a force application end of the timer (70);

When the boss (51) is clamped in the groove (25), the timing turning plate (52) is tightly attached to the timing pulling piece (49), and the pressing table (53) is not contacted with the sealer;

when the boss (51) is clamped on the side wall of the timing cam (47) and is not clamped with the groove (25), the timing turning plate (52) drives the pressing table (53) to press the sealer so as to drive the sealer to move, and then the channel (35) is opened.

12. The gas self-closing valve as recited in claim 11, wherein the sealer comprises:

a sealing block (54) fixed inside the passage (35) of the housing (34), which is hollow (55) inside and has a gas inlet (56) and a gas outlet (57);

a seal skeleton (58) inserted into the seal block (54) and penetrating the gas outlet (57), wherein the tip of the seal skeleton extends to the outside of the seal block (54) and is positioned right below the pressing table (53);

a gasket (59) coaxially fixed to a side wall of the seal frame (58) and positioned below the gas outlet (57);

a seal spring (60) sleeved on the outer side of the seal skeleton (58), one end of the seal spring is connected with the inner bottom of the hollow (55) of the seal block (54), the other end of the seal spring is connected with the side wall of the seal skeleton (58), and the seal spring (60) is positioned below the seal gasket (59); the seal spring (60) is used for applying a force for moving the seal skeleton (58) towards a timer (70);

When the pressing table (53) does not press the top end of the sealing skeleton (58), the sealing gasket (59) is attached to and seals the fuel gas outlet (57);

when the pressing table (53) presses the top end of the sealing framework (58), the sealing framework (58) moves to drive the sealing gasket (59) to be separated from the fuel gas outlet (57) so as to open the fuel gas outlet (57).

13. A gas appliance, wherein a gas self-closing valve as claimed in any one of claims 1 to 12 is provided.