CN220770175U

CN220770175U - Gas cut-off valve

Info

Publication number: CN220770175U
Application number: CN202322454858.2U
Authority: CN
Inventors: 金根喜
Original assignee: Zhejiang Meiyadi Fluid Intelligent Control Co ltd
Current assignee: Zhejiang Meiyadi Fluid Intelligent Control Co ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-04-12
Anticipated expiration: 2033-09-11

Abstract

The utility model provides a gas shut-off valve, and belongs to the technical field of gas accessories. It has solved the unable manual scheduling problem that closes of current gas trip valve. The gas shut-off valve comprises a valve rod and a valve body, wherein the valve body is provided with an air inlet end and an air outlet end communicated with the air inlet end, a valve core is arranged in the valve body, the inner end of the valve rod is connected with the valve core, the outer end of the valve rod is connected with a driving assembly which drives the valve rod to move to realize the closing of the valve core after the concentration of gas exceeds the standard, the valve rod is connected with a stirring piece which drives the valve rod to move to realize the opening and closing of the valve core, and the outer end of the stirring piece extends outwards and stretches out of the stirring part of the driving assembly or the valve body. The utility model has the manual opening and closing functions and is convenient to use.

Description

Gas cut-off valve

Technical Field

The utility model belongs to the technical field of gas accessories, and particularly relates to a gas shut-off valve.

Background

The primary consideration of the gas fittings is the use safety, and when gas leaks, the gas channel needs to be cut off in time, so that people design a gas cut-off valve, and some people also apply for patents. For example, chinese patent literature discloses an intelligent cut-off protector for leakage of liquefied gas steel cylinders [ application number: 201621080189.0; authorized bulletin number: CN206036378U ], it includes the trip valve, the trip valve includes the valve body and sets up ball valve and the valve rod of control valve body switch in the valve body, valve body one end links to each other with the steel bottle angle valve is fixed, the other end links to each other with the relief pressure valve is fixed, it still includes control box and shutdown module, the control box includes the box body and sets up control panel and gas sensor one in the box body, the surface of box body is equipped with the display screen, the button, buzzer and dust cover one, dust cover one sets up directly over gas sensor one, the shutdown module still includes the casing and sets up motor in the casing, gear box and gas sensor two, the motor links to each other with the gear box is fixed, the gear box links to each other with the one end of valve rod is fixed, motor and gas sensor two are connected with the control panel electricity.

The intelligent cut-off protector for the leakage of the liquefied gas steel cylinder can realize automatic closing of the ball valve when detecting that the concentration of the gas exceeds the standard, improves the use safety, but is the same as other existing gas cut-off valves, lacks a manual opening and closing structure, cannot be operated when encountering power failure or needing to manually close the cut-off valve, and is inconvenient to use.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a gas shut-off valve with a manual opening and closing function and convenient use.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a gas shut-off valve, includes valve rod and valve body, the valve body have the inlet end and with the inlet end be linked together give vent to anger the end, the valve body in be equipped with the case, the inner of valve rod is connected with the case, the outer end of valve rod is connected with and drives its drive assembly who moves in order to realize that the case closes when gas concentration exceeds standard, its characterized in that, the valve rod be connected with and drive its motion in order to realize the stirring piece that the case opened and close, stirring piece's outer end is outwards extended and stretches out in drive assembly or valve body's stirring portion.

In the above-mentioned gas shut-off valve, the case include the ceramic block, the valve body have the slot that supplies the ceramic block to insert and establish, the inner of valve rod links firmly with the ceramic block mutually, drive assembly includes the solenoid valve that links firmly with the valve body, stir the iron core that the piece was the solenoid valve had, the outer end of iron core is the stirring portion that stretches out the solenoid valve top, the inner of iron core links firmly with the outer end of valve rod.

In the gas shut-off valve, the inner end of the gas outlet end is connected with the screw sleeve in a threaded manner, the screw sleeve is embedded with the ceramic bonding block for abutting against the ceramic block, the screw sleeve is provided with the through hole which is axially communicated, and the ceramic bonding block is provided with the gas passing hole which is axially communicated with the through hole.

In the gas shut-off valve, the first sealing ring sealed on the outer wall of the ceramic fitting block is embedded in the threaded sleeve, the second sealing ring sealed on the inner wall of the valve body is embedded in the threaded sleeve, the electromagnetic valve is provided with a connecting seat in threaded connection with the valve body, a third sealing ring is arranged between the connecting seat and the valve body, the valve rod is penetrated by the connecting seat, and a fourth sealing ring is arranged between the connecting seat and the valve rod.

As a second condition, in the above gas shut-off valve, the valve core is a ball core, the valve body is embedded with sealing sleeves sealed at two sides of the ball core, the driving assembly comprises an electric actuator, an output end of the electric actuator is fixedly connected with an outer end of the valve rod, the stirring piece is fixedly connected with the circumferential direction of the valve rod, a shell of the electric actuator is provided with a limit groove for the stirring part to extend out, and the stirring piece swings in the limit groove to realize the opening and closing of the ball core.

In the gas shut-off valve, the valve core is a ceramic valve core, the valve body is internally provided with a valve seat, the valve seat is provided with an upper cavity communicated with the air outlet end and a lower cavity communicated with the air inlet end, the valve seat is provided with a through air passage, the ceramic valve core comprises a static ceramic chip and a movable ceramic chip, the static ceramic chip is abutted against the top of the valve seat and is provided with a vent hole I communicated with the air passage all the time, the movable ceramic chip is abutted against the top of the static ceramic chip and is provided with a vent hole II communicated with the vent hole I and the air outlet end, the inner end of the valve rod is fixedly connected with the movable ceramic chip, the driving assembly comprises an electric actuator, the output end of the electric actuator is fixedly connected with the outer end of the valve rod, the stirring piece is fixedly connected with the periphery of the valve rod, the shell of the electric actuator is provided with a limiting groove for the stirring part to stretch out, and the stirring piece swings in the limiting groove to realize the opening and closing of the ball core.

In the fuel gas shut-off valve, the ceramic valve core is in threaded connection with the valve body, and a sealing ring five is arranged between the ceramic valve core and the valve body.

Compared with the prior art, the gas shut-off valve not only has an automatic opening and closing function, but also has a manual opening and closing function, is convenient to use and has good use safety.

Drawings

Fig. 1 is a perspective view of the gas shutoff valve in example 1.

Fig. 2 is a sectional view showing the structure of the gas shutoff valve in example 1.

Fig. 3 is a perspective view of the gas shutoff valve in example 2.

Fig. 4 is a sectional view showing the structure of the gas shutoff valve in example 2.

Fig. 5 is a sectional view showing the structure of the gas shutoff valve in example 3.

In the figure, 1, a valve rod; 2. a valve body; 3. an air inlet end; 4. an air outlet end; 5. a valve core; 6. a toggle member; 61. a toggle part; 7. a ceramic block; 8. an electromagnetic valve; 81. a connecting seat; 9. an iron core; 10. a screw sleeve; 11. a ceramic bonding block; 12. a first sealing ring; 13. a second sealing ring; 14. a third sealing ring; 15. a sealing ring IV; 16. a core; 17. sealing sleeve; 18. an electric actuator; 19. a limit groove; 20. a ceramic valve core; 201. static porcelain piece; 202. moving the ceramic chip; 203. a first vent hole; 204. a second vent hole; 21. a valve seat; 22. an upper chamber; 23. a lower cavity; 24. a gas passage; 25. and a sealing ring V.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Example 1

As shown in fig. 1 and 2, the gas shut-off valve comprises a valve rod 1 and a valve body 2, wherein the valve body 2 is provided with an air inlet end 3 and an air outlet end 4 communicated with the air inlet end 3, the air inlet end 3 is used for being connected with a pressure reducing valve or a steel bottle connecting valve or a pipe joint or a gas pipeline, a valve core 5 is arranged in the valve body 2, the inner end of the valve rod 1 is connected with the valve core 5, the outer end of the valve rod 1 is connected with a driving component which drives the valve rod 1 to move so as to realize the closing of the valve core 5 when the concentration of gas exceeds standard, the valve rod 1 is connected with a stirring piece 6 which drives the valve rod 1 to move so as to realize the opening and closing of the valve core 5, and the outer end of the stirring piece 6 extends outwards and stretches out of a stirring part 61 of the driving component or the valve body 2.

When the gas shut-off valve is used, when the concentration of external gas exceeds the standard, the driving assembly drives the valve rod 1 to move so as to realize the closing of the valve core 5, so that the gas is prevented from continuously leaking, and the use safety is ensured; when a power failure occurs or manual closing is needed, a user manually drives the stirring part 61 to act, the stirring piece 6 drives the valve rod 1 to move so as to realize closing of the valve core 5, and the user can open the valve core 5 again through the stirring piece 6. The gas shut-off valve not only has an automatic opening and closing function, but also has a manual opening and closing function, and is convenient to use and good in use safety.

Further, in this embodiment, the valve core 5 includes a ceramic block 7, the valve body 2 has a slot for inserting the ceramic block 7, the inner end of the valve rod 1 is fixedly connected with the ceramic block 7, during actual manufacturing, the top of the ceramic block 7 is inserted into the valve rod 1, a pin shaft passes through the top of the ceramic block 7 and the valve rod 1 to fixedly connect the ceramic block 7 and the valve rod 1, the driving assembly includes an electromagnetic valve 8 fixedly connected with the valve body 2, the stirring piece 6 is an iron core 9 provided with the electromagnetic valve 8, the outer end of the iron core 9 is a stirring part 61 extending out of the top of the electromagnetic valve 8, and the inner end of the iron core 9 is fixedly connected with the outer end of the valve rod 1. When the gas sensor is used, when the concentration of external gas exceeds the standard, the existing controller controls the electromagnetic valve 8 to work after obtaining the signal of the gas sensor, so that the iron core 9 drives the valve rod 1 to vertically descend, the ceramic block 7 is inserted into the slot, the gas inlet end 3 and the gas outlet end 4 are blocked, and the gas is prevented from continuously leaking; when a power failure occurs or manual closing is needed, a user manually presses the outer end (poking part 61) of the iron core 9, the iron core 9 drives the valve rod 1 and the ceramic block 7 to descend together, the air inlet end 3 and the air outlet end 4 are separated, and the operation is convenient. In actual manufacturing, the electromagnetic valve 8 is vertically and fixedly connected to the top of the valve body 2, so that connection arrangement and manual pressing operation are facilitated.

The inner end of the air outlet end 4 is connected with a screw sleeve 10 in a threaded manner, the screw sleeve 10 is embedded with a ceramic laminating block 11 for abutting against the ceramic block 7, the screw sleeve 10 is provided with an axial through hole, and the ceramic laminating block 11 is provided with an air passing hole which is axially through and communicated with the through hole. When closing, ceramic laminating piece 11 is laminated with ceramic piece 7, has guaranteed the leakproofness, has improved the safety in utilization, and ceramic laminating piece 11 and ceramic piece 7 both wearability are good moreover, long service life.

The screw sleeve 10 is embedded with a first sealing ring 12 sealed on the outer wall of the ceramic bonding block 11, the screw sleeve 10 is embedded with a second sealing ring 13 sealed on the inner wall of the valve body 2, the electromagnetic valve 8 is provided with a connecting seat 81 in threaded connection with the valve body 2, a third sealing ring 14 is arranged between the connecting seat 81 and the valve body 2, the connecting seat 81 is used for the valve rod 1 to penetrate through, and a fourth sealing ring 15 is arranged between the connecting seat 81 and the valve rod 1. The leakproofness is good like this, avoids the gas to leak, and connecting seat 81 threaded connection has the locking cap in this embodiment, and the locking cap supplies valve rod 1 to wear to establish and the locking cap inlays and is equipped with the sealing washer four 15 sealed in valve rod 1, and certainly during actual manufacturing, the outer wall of valve rod 1 can inlay and establish the sealing washer four 15 sealed in connecting seat 81, and the quantity of sealing washer four 15 is according to actual conditions.

Example 2

As shown in fig. 3 and fig. 4, in this embodiment, the valve core 5 is a ball core 16, the valve body 2 is embedded with sealing sleeves 17 sealed at two sides of the ball core 16, the driving assembly includes an electric actuator 18, an output end of the electric actuator 18 is fixedly connected with an outer end of the valve rod 1, and in actual manufacturing, the output end of the electric actuator 18 has a flat square embedded into the top of the outer end of the valve rod 1, so that the output end of the electric actuator 18 is fixedly connected with the outer end of the valve rod 1; the stirring piece 6 is fixedly connected with the valve rod 1 in the circumferential direction, in the embodiment, the outer wall of the valve rod 1 is provided with a circle of teeth, the inner end of the stirring piece 6 is annular and sleeved on the outer wall of the valve rod 1, and the inner end of the stirring piece 6 is meshed with the teeth on the outer wall of the valve rod 1, so that the stirring piece 6 is connected with the Zhou Xianggu of the valve rod 1, and the stirring piece 6 can be connected with the valve rod 1 through threads to realize Zhou Xianggu connection of the stirring piece 6 and the valve rod 1 in actual manufacturing; the shell of the electric actuator 18 is provided with a limit groove 19 for the poking part 61 to extend, and the poking piece 6 swings in the limit groove 19 to realize the opening and closing of the ball core 16.

In actual manufacturing, when the poking piece 6 is propped against the groove wall at one side of the limiting groove 19, the ball core 16 is in an open state (the opening degree is maximum), and when the poking piece 6 is propped against the groove wall at the other side of the limiting groove 19, the ball core 16 is in a closed state; when the gas sensor is used, when the concentration of external gas exceeds the standard, the existing controller controls the electric actuator 18 to work after obtaining the signal of the gas sensor, the output end of the electric actuator 18 drives the valve rod 1 to rotate, the valve rod 1 drives the ball core 16 to rotate, the gas inlet end 3 and the gas outlet end 4 are separated, and the gas is prevented from continuing to leak; when a power failure occurs or manual closing is needed, a user pulls the stirring part 61, the stirring piece 6 drives the valve rod 1 to rotate, the valve rod 1 drives the ball core 16 to rotate, the air inlet end 3 and the air outlet end 4 are separated, and the operation is convenient.

Example 3

As shown in fig. 5, in this embodiment, the valve core 5 is a ceramic valve core 20, the valve body 2 is provided with a valve seat 21, the valve seat 21 is provided with an upper cavity 22 communicated with the air outlet end 4, the valve seat 21 is provided with a lower cavity 23 communicated with the air inlet end 3, the valve seat 21 is provided with a through air passing channel 24, the ceramic valve core 20 comprises a static ceramic chip 201 and a movable ceramic chip 202, the static ceramic chip 201 is abutted against the top of the valve seat 21, the static ceramic chip 201 is provided with a vent hole one 203 communicated with the air passing channel 24 all the time, the movable ceramic chip 202 is abutted against the top of the static ceramic chip 201, the movable ceramic chip 202 is provided with a vent hole two 204 for communicating the vent hole one 203 with the air outlet end 4, the vent hole two 204 is in a right angle shape, the inner end of the valve rod 1 is fixedly connected with the movable ceramic chip 202, in this embodiment, the inner end of the valve rod 1 is provided with two protruding columns, the movable ceramic chip 202 is provided with grooves for inserting the protruding columns, thus the inner end of the valve rod 1 is fixedly connected with the movable ceramic chip 202, in actual manufacturing, the inner end of the valve rod 1 can be flat square, and the inner end of the valve rod 1 is fixedly connected with the inner end of the movable ceramic chip 202 is embedded in order to realize the fixedly connection; the driving assembly comprises an electric actuator 18, wherein the output end of the electric actuator 18 is fixedly connected with the outer end of the valve rod 1, and in actual manufacturing, the output end of the electric actuator 18 is provided with a flat square embedded into the top of the outer end of the valve rod 1, so that the output end of the electric actuator 18 is fixedly connected with the outer end of the valve rod 1; the stirring piece 6 is fixedly connected with the valve rod 1 in the circumferential direction, in the embodiment, the outer wall of the valve rod 1 is provided with a circle of teeth, the inner end of the stirring piece 6 is annular and sleeved on the outer wall of the valve rod 1, and the inner end of the stirring piece 6 is meshed with the teeth on the outer wall of the valve rod 1, so that the stirring piece 6 is connected with the Zhou Xianggu of the valve rod 1, and the stirring piece 6 can be connected with the valve rod 1 through threads to realize Zhou Xianggu connection of the stirring piece 6 and the valve rod 1 in actual manufacturing; the shell of the electric actuator 18 is provided with a limit groove 19 for the poking part 61 to extend, and the poking piece 6 swings in the limit groove 19 to realize the opening and closing of the ball core 16.

In actual manufacturing, when the poking piece 6 is abutted against the groove wall on one side of the limiting groove 19, the ceramic valve core 20 is in an open state (at the moment, the second vent hole 204 is completely communicated with the first vent hole 203, and the opening degree is maximum), and when the poking piece 6 is abutted against the groove wall on the other side of the limiting groove 19, the ceramic valve core 20 is in a closed state, and the second vent hole 204 is not communicated with the first vent hole 203; when the gas sensor is used, when the concentration of external gas exceeds the standard, the existing controller controls the electric actuator 18 to work after obtaining the signal of the gas sensor, the output end of the electric actuator 18 drives the valve rod 1 to rotate, the valve rod 1 drives the movable ceramic chip 202 to rotate, so that the vent two 204 and the vent one 203 are not communicated, the gas inlet end 3 and the gas outlet end 4 are blocked, and the gas is prevented from continuously leaking; when a power failure occurs or manual closing is needed, a user pulls the stirring part 61, the stirring piece 6 drives the valve rod 1 to rotate, the valve rod 1 drives the movable ceramic chip 202 to rotate, the air inlet end 3 and the air outlet end 4 are separated, and the operation is convenient.

The ceramic valve core 20 is in threaded connection with the valve body 2, and a five-25 sealing ring is arranged between the ceramic valve core and the valve body, so that the ceramic valve core is convenient to connect and good in sealing performance.

What is not described in detail in this specification is prior art known to those skilled in the art. The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a gas shut-off valve, includes valve rod (1) and valve body (2), valve body (2) have inlet end (3) and with inlet end (3) be linked together give vent to anger end (4), valve body (2) in be equipped with case (5), the inner of valve rod (1) is connected with case (5), the outer end of valve rod (1) is connected with and drives its motion in order to realize the drive assembly that case (5) closed when gas concentration exceeds standard, a serial communication port, valve rod (1) be connected with and drive its motion in order to realize the stirring piece (6) that case (5) opened and close, stir the outer end of piece (6) for outwards extending and stretching out in drive assembly or valve body (2) stirring portion (61).

2. The gas shut-off valve according to claim 1, wherein the valve core (5) comprises a ceramic block (7), the valve body (2) is provided with a slot for inserting the ceramic block (7), the inner end of the valve rod (1) is fixedly connected with the ceramic block (7), the driving assembly comprises an electromagnetic valve (8) fixedly connected with the valve body (2), the stirring piece (6) is an iron core (9) arranged on the electromagnetic valve (8), the outer end of the iron core (9) is a stirring part (61) extending out of the top of the electromagnetic valve (8), and the inner end of the iron core (9) is fixedly connected with the outer end of the valve rod (1).

3. The gas shut-off valve according to claim 2, wherein the inner end of the gas outlet end (4) is in threaded connection with a screw sleeve (10), the screw sleeve (10) is embedded with a ceramic fitting block (11) for abutting against the ceramic block (7), the screw sleeve (10) is provided with an axial through hole, and the ceramic fitting block (11) is provided with a gas passing hole which is axially through and communicated with the through hole.

4. A gas shut-off valve according to claim 3, characterized in that the screw sleeve (10) is embedded with a first sealing ring (12) sealed on the outer wall of the ceramic attaching block (11), the screw sleeve (10) is embedded with a second sealing ring (13) sealed on the inner wall of the valve body (2), the electromagnetic valve (8) is provided with a connecting seat (81) in threaded connection with the valve body (2) and a third sealing ring (14) is arranged between the connecting seat (81) and the valve body (2), the connecting seat (81) is used for the valve rod (1) to penetrate and a fourth sealing ring (15) is arranged between the connecting seat (81) and the valve rod (1).

5. The gas shut-off valve according to claim 1, wherein the valve core (5) is a ball core (16), the valve body (2) is embedded with sealing sleeves (17) sealed at two sides of the ball core (16), the driving assembly comprises an electric actuator (18), the output end of the electric actuator (18) is fixedly connected with the outer end of the valve rod (1), the stirring piece (6) is fixedly connected with the periphery of the valve rod (1), the shell of the electric actuator (18) is provided with a limit groove (19) for the stirring part (61) to extend out, and the stirring piece (6) swings in the limit groove (19) to realize the opening and closing of the ball core (16).

6. The gas shut-off valve according to claim 1, wherein the valve core (5) is a ceramic valve core (20), the valve body (2) is internally provided with a valve seat (21), the valve seat (21) is provided with an upper cavity (22) communicated with the air outlet end (4), the valve seat (21) is provided with a lower cavity (23) communicated with the air inlet end (3), the valve seat (21) is provided with a through air passing channel (24), the ceramic valve core (20) comprises a static ceramic chip (201) and a dynamic ceramic chip (202), the static ceramic chip (201) is abutted against the top of the valve seat (21) and the static ceramic chip (201) is provided with a vent hole I (203) communicated with the air passing channel (24), the dynamic ceramic chip (202) is abutted against the top of the static ceramic chip (201), the dynamic ceramic chip (202) is provided with a vent hole II (204) communicated with the air outlet end (4), the inner end of the valve rod (1) is fixedly connected with the dynamic ceramic chip (202), the driving component comprises an electric actuator (18), the output end of the electric actuator (18) is fixedly connected with the outer end (6) of the valve rod (1) of the valve rod (19) and is fixedly connected with the outer end (19) of the valve rod (1) and provided with a limit groove (19), the poking piece (6) swings in the limiting groove (19) to realize the opening and closing of the ball core (16).

7. The gas shut-off valve according to claim 6, wherein the ceramic valve core (20) is in threaded connection with the valve body (2) and a seal ring five (25) is arranged between the ceramic valve core and the valve body.