CN212616565U

CN212616565U - Pipeline gas self-closing valve

Info

Publication number: CN212616565U
Application number: CN202021004696.2U
Authority: CN
Inventors: 朱永
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-02-26
Anticipated expiration: 2030-06-04

Abstract

The utility model belongs to the technical field of the self-closing valve technique and specifically relates to a pipeline gas self-closing valve, which comprises a valve body, the valve body both sides are equipped with the inlet end and give vent to anger the end, the inlet end includes first air inlet and second air inlet, be equipped with current limiting device on the first air inlet, the valve body top is equipped with the valve gap, be equipped with the involucra between valve gap and valve body, the valve gap top is equipped with carries button and button, the bottom and the involucra of button are fixed, the bottom of involucra is equipped with the permanent magnet, be equipped with the sliding sleeve in the valve body, spacing sliding connection is equipped with the traveller in the sliding sleeve, the traveller top is equipped with the dead weight hoop, be equipped with the right angle lever piece in the valve body, be equipped with the. The utility model discloses can be according to atmospheric pressure size, independently close the valve body, the security performance is high, has practicality, is fit for promoting.

Description

Pipeline gas self-closing valve

Technical Field

The utility model relates to a self-closing valve technical field especially relates to a pipeline gas self-closing valve.

Background

The pipeline gas self-closing valve is a device which is installed on the pipeline of a low-pressure gas system, can be automatically closed without electricity or other external power when the gas supply pressure of the pipeline is under-pressure or over-pressure, and needs to be manually opened, and is suitable for pipeline natural gas, liquefied petroleum gas and artificial gas. The existing gas self-closing valve has the defects of complex structural design, low reaction sensitivity and poor safety performance, so that a pipeline gas self-closing valve is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems of the prior art that the existing gas self-closing valve is complex in structural design, low in reaction sensitivity and poor in safety performance, and providing a pipeline gas self-closing valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the design is a pipeline gas self-closing valve which comprises a valve body, wherein a gas inlet end and a gas outlet end which are communicated are respectively arranged on two sides of the valve body, a first gas inlet and a second gas inlet are sequentially arranged at the gas inlet end along the gas inlet direction, a current limiting device is arranged on one side of the first gas inlet, a valve cover is fixedly arranged at the top of the valve body through screws, a leather diaphragm is clamped between the valve cover and the valve body, a lifting button is arranged at the top of the valve cover in a sliding connection mode, a button is arranged in the lifting button in a sliding and sleeved mode, the bottom of the button is fixedly connected with the leather diaphragm, a permanent magnet is fixedly arranged at the bottom of the leather diaphragm, a sliding sleeve is fixedly arranged in the valve body, a sliding column is arranged in the sliding sleeve in a limiting and sliding connection mode, a dead weight iron ring which is opposite to the permanent magnet is fixedly arranged at the, sliding connection is equipped with the transfer line on the second air inlet, the one end of transfer line fixed be equipped with second air inlet assorted air inlet is sealed to fill up, the other end of transfer line and the bottom of traveller all fixed be equipped with spout assorted slider.

Preferably, the current limiting device includes the spoiler, the spoiler with first air inlet phase-match, the equidistance is equallyd divide and is equipped with a plurality of restricted orifices on the spoiler, the spoiler passes through slide bar structure sliding connection and connects in one side of admitting air of first air inlet the clamp connection is equipped with little spring between the slide bar of spoiler and first air inlet, little spring drive the spoiler is kept away from the elasticity of first air inlet.

Preferably, the spoiler is kept away from one side of first air inlet is equipped with the backstop board, the backstop board is fixed at the inlet end inner wall, be equipped with on the backstop board with the through-hole that the restricted aperture was crisscross to be set up, both when first air inlet was by the backward flow gas of flow direction inlet end, the elasticity that drives the spoiler and overcome little spring was close to and laminating the backstop board, and crisscross through-hole and restricted aperture are sealed each other this moment, prevent the backward flow.

Preferably, the adsorption force of the permanent magnet to the self-weight iron ring is greater than the sum of the gravity of the self-weight iron ring and the sliding column and the friction force generated when the right-angle lever piece rotates, and under normal air pressure, the elastic force of the membrane can support the button, the permanent magnet of the button adsorbs the sliding column and the self-weight iron ring of the sliding column to move upwards to the highest limit point of the sliding sleeve.

Preferably, the air inlet sealing gasket is of a hemispherical structure, and one spherical side of the air inlet sealing gasket is opposite to the air inlet end.

Preferably, a return spring is clamped between the lifting button and the valve cover, and the return spring has an elastic force for driving the lifting button to be close to the valve cover.

Preferably, the inner wall of the air outlet end is provided with an air outlet, one side of the air outlet is provided with a backflow baffle through a sliding rod structure in a sliding connection mode, a backflow spring is clamped between the backflow baffle and the air outlet, and the backflow spring has elasticity for driving the backflow baffle to be away from the air outlet.

The utility model provides a pair of pipeline gas self-closing valve, beneficial effect lies in: the utility model discloses a structural design of the spoiler with a micro spring and a flow-limiting hole, when the air pressure at the air inlet end is too large and is larger than the elasticity of the micro spring, the air pressure pushes the spoiler to the first air inlet, the air pressure can only flow into the second air inlet from the flow-limiting hole, thereby realizing the prevention of the over-current phenomenon, simultaneously, when the pipeline gas self-closing valve is used, the button is driven to move upwards by lifting the lifting button, the permanent magnet on the button adsorbs the sliding column on the sliding column to move upwards to the highest limit point of the sliding sleeve, the right-angle lever piece rotates to drive the air inlet sealing pad to be far away from the second air inlet, so that the gas flows into the air outlet end through the second air inlet, when the pressure at the air inlet end is too high, the leather membrane expands to drive the button to move upwards, at the moment, the permanent magnet and the dead weight iron ring drop (because the sliding column at, the dead weight hoop drives the traveller and moves down, and then makes the right angle lever piece reset, makes the sealed laminating of air inlet gasket on the second air inlet, and whole valve body is sealed, reaches the self-closing effect, the utility model discloses can independently close the valve body according to atmospheric pressure size, the security performance is high, has practicality, is fit for promoting.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a pipeline gas self-closing valve provided by the present invention;

fig. 2 is a schematic structural view of a second air inlet according to the present invention when closed;

fig. 3 is a schematic structural view of the second air inlet provided in the present invention when opening.

In the figure: the valve comprises a valve body 1, an air inlet end 2, a first air inlet 21, a second air inlet 22, a spoiler 3, a flow limiting hole 31, a micro spring 4, a valve cover 5, a lifting button 6, a return spring 61, a button 7, a membrane 8, a right-angle lever piece 9, a fixed fulcrum 91, a sliding groove 92, a sliding block 93, a transmission rod 10, an air inlet sealing gasket 11, an air outlet end 12, a backflow baffle 121, a backflow spring 122, an air outlet 123, a sliding column 13, a self-weight iron ring 14, a permanent magnet 15, a sliding sleeve 16, a check plate 17 and a through hole 171.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a pipeline gas self-closing valve, including valve body 1, the both sides of valve body 1 are equipped with inlet end 2 and the end 12 of giving vent to anger that are linked together respectively, inlet end 2 is equipped with first air inlet 21 and second air inlet 22 along the direction of admitting air in proper order, the inner wall of the end 12 of giving vent to anger is equipped with gas outlet 123, gas outlet 123 one side is equipped with backflow baffle 121 through slide bar structure sliding connection, backflow baffle 121 and gas outlet 123 connect between one side and be equipped with return spring 122, return spring 122 has the elasticity of ordering about backflow baffle 121 to keep away from gas outlet 123, can effectively prevent the output gas backward flow of inlet end 2 through setting up of backflow baffle 121, the security.

First air inlet 21 one side is equipped with flow limiting device, flow limiting device includes spoiler 3, spoiler 3 and first air inlet 21 phase-match, it is equipped with a plurality of restricted orifices 31 to divide equally to wait the angle on spoiler 3, spoiler 3 passes through slide bar structure sliding connection in the air intake one side of first air inlet 21, it is equipped with little spring 4 to connect the slide bar of spoiler 3 and the first air inlet 21 interlude, little spring 4 drives spoiler 3 and keeps away from the elasticity of first air inlet 21, one side that spoiler 3 kept away from first air inlet 21 is equipped with backstop 17, backstop 17 is fixed at 2 inner walls of air inlet end, be equipped with the through-hole 171 that sets up with restricted orifice 31 crisscross on the backstop 17.

The utility model discloses a have little spring 4, the structural design of the spoiler 3 of restricted aperture 31, when the atmospheric pressure of inlet end 2 is too big and be greater than little spring 4's elasticity, atmospheric pressure pushes away spoiler 3 to first air inlet 21, atmospheric pressure can only flow in second air inlet 22 from restricted aperture 31, the realization prevents the phenomenon of overflowing, the safety performance is promoted, when first air inlet 21 is by the backflow gas of flow direction inlet end 2, the elasticity that drives spoiler 3 and overcome little spring 4 is close to and laminates backstop 17, crisscross through-hole 171 and restricted aperture 31 are sealed each other this moment, prevent the backward flow, further promote the safety performance.

The top of the valve body 1 is fixedly provided with a valve cover 5 through screws, a rubber membrane 8 is clamped between the valve cover 5 and the valve body 1, the top of the valve cover 5 is slidably connected with a lifting button 6, a return spring 61 is clamped between the lifting button 6 and the valve cover 5, the return spring 61 has elastic force for driving the lifting button 6 to be close to the valve cover 5, the lifting button 6 is slidably sleeved with a button 7, the bottom of the button 7 is fixedly connected with the rubber membrane 8, the bottom of the rubber membrane 8 is fixedly provided with a permanent magnet 15, the valve body 1 is internally fixedly provided with a sliding sleeve 16, the sliding sleeve 16 is internally provided with a sliding column 13 in a limiting sliding connection manner, the top of the sliding column 13 is fixedly provided with a self-weight iron ring 14 which is opposite to the permanent magnet 15, the valve body 1 is internally rotatably connected with a right-angle lever piece 9 through a fixed fulcrum 91, two ends of the right-angle lever piece 9 are both provided with sliding grooves 92, the air inlet gasket 11 is of a hemispherical structure, and one spherical side of the air inlet gasket 11 is opposite to the air inlet end 2.

The other end of the transmission rod 10 and the bottom end of the sliding column 13 are both fixedly provided with a sliding block 93 matched with the sliding groove 92, the adsorption force of the permanent magnet 15 on the self-weight iron ring 14 is larger than the sum of the gravity of the self-weight iron ring 14 and the sliding column 13 and the friction force generated when the right-angle lever piece 9 rotates, and under normal air pressure, the elastic force of the membrane 8 can support the button 7 and the permanent magnet 15 thereof to adsorb the sliding column 13 and move upwards to the highest limit point of the sliding sleeve 16.

When the pipeline gas self-closing valve is used, the lifting button 6 is lifted to drive the button 7 to move upwards, the permanent magnet 15 on the button 7 adsorbs the sliding column 13 on the sliding column 13 to move upwards to the highest limit point of the sliding sleeve 16, the right-angle lever sheet 9 rotates to drive the air inlet air-tight sealing pad 11 to be far away from the second air inlet 22, so that gas flows into the air outlet end 12 through the second air inlet 22, when the pressure of the air inlet end 2 is too high, the leather membrane 8 expands to drive the button 7 to move upwards, and the permanent magnet 15 and the self-weight iron ring 14 fall off (because the sliding column 13 at the bottom of the self-weight iron ring 14 moves upwards to the highest limit point of the sliding sleeve 16 and cannot move upwards along with the permanent magnet 15), because of the gravity relationship, the self-weight iron ring 14 drives the sliding column 13 to move downwards, so that the right-angle lever sheet 9 resets, the air inlet sealing pad 11 is attached to the second air inlet 22, the whole valve, the valve body 1 is automatically closed, safety performance is high, practical performance is achieved, and the valve is suitable for popularization.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A pipeline gas self-closing valve comprises a valve body (1) and is characterized in that a gas inlet end (2) and a gas outlet end (12) which are communicated with each other are respectively arranged on two sides of the valve body (1), the gas inlet end (2) is sequentially provided with a first gas inlet (21) and a second gas inlet (22) along the gas inlet direction, one side of the first gas inlet (21) is provided with a flow limiting device, the top of the valve body (1) is fixedly provided with a valve cover (5) through screws, a membrane (8) is clamped between the valve cover (5) and the valve body (1), the top of the valve cover (5) is slidably connected with a lifting button (6), the lifting button (6) is slidably sleeved with a button (7), the bottom of the button (7) is fixedly connected with the membrane (8), a permanent magnet (15) is fixedly arranged at the bottom of the membrane (8), and a sliding sleeve (16) is fixedly arranged in, spacing sliding connection is equipped with traveller (13) in sliding sleeve (16), traveller (13) top is fixed be equipped with dead weight hoop (14) that permanent magnet (15) set up relatively, rotate through fixed fulcrum (91) in valve body (1) and connect and be equipped with right angle lever piece (9), the both ends of right angle lever piece (9) all are equipped with spout (92), sliding connection is equipped with transfer line (10) on second air inlet (22), the one end of transfer line (10) is fixed be equipped with second air inlet (22) assorted air inlet gasket (11), the other end of transfer line (10) and the bottom of traveller (13) all fixed be equipped with spout (92) assorted slider (93).

2. The pipeline gas self-closing valve according to claim 1, wherein the flow limiting device comprises a flow blocking plate (3), the flow blocking plate (3) is matched with the first gas inlet (21), a plurality of flow limiting holes (31) are uniformly distributed on the flow blocking plate (3) at equal angles, the flow blocking plate (3) is connected to the gas inlet side of the first gas inlet (21) in a sliding mode through a sliding rod structure, a micro spring (4) is arranged between the sliding rod connected with the flow blocking plate (3) and the first gas inlet (21) in a clamping mode, and the micro spring (4) drives the flow blocking plate (3) to be far away from the elastic force of the first gas inlet (21).

3. The pipeline gas self-closing valve according to claim 2, wherein a check plate (17) is arranged on one side of the spoiler (3) far away from the first gas inlet (21), the check plate (17) is fixed on the inner wall of the gas inlet end (2), a through hole (171) which is staggered with the flow limiting hole (31) is formed in the check plate (17), when the first gas inlet (21) is filled with backflow gas flowing to the gas inlet end (2), the spoiler (3) is driven to overcome the elastic force of the micro spring (4) to be close to and attached to the check plate (17), and at the moment, the staggered through hole (171) and the flow limiting hole (31) are mutually closed to prevent backflow.

4. The pipeline gas self-closing valve according to claim 1, wherein the adsorption force of the permanent magnet (15) to the self-weight iron ring (14) is greater than the sum of the gravity of the self-weight iron ring (14) and the sliding column (13) and the friction force of the right-angle lever piece (9) during rotation, and under normal air pressure, the elastic force of the membrane (8) can support the button (7) and the permanent magnet (15) thereof to adsorb the sliding column (13) and the self-weight iron ring (14) thereof to move up to the highest limit point of the sliding sleeve (16).

5. The pipeline gas self-closing valve according to claim 1, characterized in that the gas inlet gasket (11) is of a hemispherical structure, and the spherical side of the gas inlet gasket (11) is arranged opposite to the gas inlet end (2).

6. The pipeline gas self-closing valve as recited in claim 1, wherein a return spring (61) is clamped between the lifting button (6) and the valve cover (5), and the return spring (61) has an elastic force for driving the lifting button (6) to be close to the valve cover (5).

7. The pipeline gas self-closing valve as claimed in claim 1, wherein an air outlet (123) is formed in an inner wall of the air outlet end (12), a backflow baffle (121) is slidably connected to one side of the air outlet (123) through a sliding rod structure, a backflow spring (122) is clamped between the backflow baffle (121) and the air outlet (123), and the backflow spring (122) has an elastic force for driving the backflow baffle (121) away from the air outlet (123).