CN216743016U

CN216743016U - Gas self-closing valve

Info

Publication number: CN216743016U
Application number: CN202220233111.7U
Authority: CN
Inventors: 王薇珲; 王群锋
Original assignee: Ningbo Jiaming Metal Products Co ltd
Current assignee: Ningbo Jiaming Metal Products Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-14
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a gas self-closing valve, which comprises a valve body, a fluid passage penetrating through the valve body, a valve core arranged in the fluid passage to open or close the fluid passage, and a driving mechanism for controlling the action of the valve core, wherein the driving mechanism comprises a lifting cap, a pull rod, a skin membrane and a permanent magnet, one end of the pull rod penetrates through the skin membrane and is connected with the lifting cap, and the other end of the pull rod is adsorbed or separated from the permanent magnet; the valve core comprises a push rod and a slide block, the upper end of the slide block is fixedly connected with a permanent magnet, an inclined slide way is vertically arranged on the side surface of the slide block, the push rod is installed in the fluid channel, a slide rod is arranged on the side surface of the push rod, the slide rod is matched in the slide way of the slide block and can move along the slide way so as to drive the push rod to move along the fluid channel to open or close the fluid channel when the slide block moves up and down; this application only needs two parts can realize the self-closing function of self-closing valve through setting up push rod and slider, simple structure, and it is easy to make.

Description

Gas self-closing valve

Technical Field

The utility model relates to the technical field of gas safety, in particular to a gas self-closing valve.

Background

The self-closing valve is arranged on a pipeline of a low-pressure gas system, is of a full mechanical structure, does not use electricity or other external power when the gas supply pressure of the pipeline is under-pressure or overpressure, can be automatically closed and needs to be manually opened.

The existing self-closing valve generally comprises a valve body, a fluid channel penetrating through the valve body, a valve core arranged in the fluid channel to open or close the fluid channel, and a driving structure for controlling the action of the valve core; the driving mechanism comprises a lifting cap, a pull rod, a membrane and a permanent magnet, one end of the pull rod penetrates through the membrane and is connected with the lifting cap, the other end of the pull rod is adsorbed or separated from the permanent magnet, the permanent magnet is connected to a valve core, and the membrane senses the pressure of fluid in the valve body, so that the pull rod is driven to move up and down under the conditions of underpressure and overpressure, the valve core connected with the permanent magnet acts through adsorption or separation of the permanent magnet, the fluid channel is automatically blocked, and the purpose of automatically closing the air flow channel is achieved when the air pressure is under underpressure or overpressure. However, the existing self-closing valve core has a complex structure and is difficult to manufacture.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a gas self-closing valve with a simple structure.

The technical scheme adopted by the utility model is as follows:

a gas self-closing valve comprises a valve body, a fluid channel penetrating through the valve body, a valve core arranged in the fluid channel to open or close the fluid channel, and a driving structure for controlling the action of the valve core, wherein the driving mechanism comprises a lifting cap, a pull rod, a leather membrane and a permanent magnet, one end of the pull rod penetrates through the leather membrane and is connected with the lifting cap, and the other end of the pull rod is adsorbed or separated from the permanent magnet; the valve core comprises a push rod and a slide block, the upper end of the slide block is fixedly connected with a permanent magnet, an inclined slide way is vertically arranged on the side face of the slide block, the push rod is installed in the fluid channel, a slide rod is arranged on the side face of the push rod, the slide rod is matched in the slide way of the slide block and can move along the slide way to drive the push rod to move along the fluid channel to open or close the fluid channel when the slide block moves up and down.

Further, a flat cushion block is further arranged between the sliding block and the permanent magnet block, a through hole penetrating through two sides of the flat cushion block is formed in the flat cushion block, the sliding block is arranged on the lower side of the permanent magnet block, and the permanent magnet block is arranged on the upper side of the flat cushion block and is connected with the upper end of the sliding block through a screw penetrating through the through hole.

Furthermore, the upper end of the sliding block is provided with a cylindrical fixing column, the outer diameter of the fixing column is matched with the inner diameter of the through hole, and the fixing column is matched in the through hole and can move up and down along the through hole.

Furthermore, the lower end of the fixed column is fixedly provided with a first limiting part and a second limiting part, the first limiting part and the second limiting part are arranged at intervals, a push rod channel for the push rod to pass through is formed between the first limiting part and the second limiting part, the slide ways are respectively arranged on the side surfaces of the first limiting part and the second limiting part, and the slide rods are respectively arranged on two sides of the push rod and are matched in the slide ways.

Further, the slide passes through the both sides that correspond spacing portion.

Furthermore, one end of the push rod is matched in the inlet end of the fluid channel, and the upper side, the lower side, the left side and the right side of one end of the push rod are respectively provided with an extending part which extends radially towards the push rod, and the extending parts are matched with the inner diameter of the inlet end of the fluid channel.

Further, the permanent magnet motor also comprises a protective sleeve, wherein the protective sleeve is of a sleeve body structure with an opening at the upper end and wraps the lower end and the side face of the permanent magnet.

Furthermore, the bottom of the fluid channel is provided with a containing groove, the size and the height of the containing groove are matched with the sliding block, and the sliding block is arranged in the containing groove.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is an exploded view of a gas self-closing valve provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a gas self-closing valve provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a valve body provided in an embodiment of the present application;

FIG. 4 is a schematic view of a putter according to an embodiment of the present application;

fig. 5 is a schematic view of a slider structure provided in an embodiment of the present application.

The valve comprises a valve body 1, an accommodating groove 11, a push rod 2, a slide rod 21, an extending part 22, a slide block 3, a slide way 31, a fixed column 32, a first limiting part 33, a second limiting part 34, a push rod channel 35, a flat cushion block 4, a protective sleeve 5, a permanent magnet block 6, a pull rod 7, a membrane 8 and a lifting cap 9.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the prior art. Therefore, the present invention is an improvement of the prior art, and the essential point of the present invention is the connection relationship between hardware, rather than the functions and methods themselves, that is, the present invention relates to a point of functions and methods, but does not include the improvement of the functions and methods itself. The description of the present invention as to functions and methods is provided for better illustration and understanding of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

Referring to fig. 1 to 5, the application provides a gas self-closing valve, which includes a valve body 1, a fluid passage penetrating through the valve body 1, a valve core arranged in the fluid passage to open or close the fluid passage, and a driving mechanism for controlling the action of the valve core, wherein the driving mechanism includes a lifting cap 9, a pull rod 7, a membrane 8 and a permanent magnet 6, one end of the pull rod 7 penetrates through the membrane 8 and is connected with the lifting cap 9, and the other end of the pull rod is adsorbed or separated from the permanent magnet 6; the valve core comprises a push rod 2 and a slide block 3, the upper end of the slide block 3 is fixedly connected with a permanent magnet 6, an inclined slide way 31 is vertically arranged on the side face of the slide block 3, the push rod 2 is installed in the fluid channel, a slide rod 21 is arranged on the side face of the push rod 2, and the slide rod 21 is matched in the slide way 31 of the slide block 3 and can move along the slide way 31 so as to drive the push rod 2 to move along the fluid channel to open or close the fluid channel when the slide block 3 moves up and down.

When in use, the self-closing valve is arranged on a gas pipeline, and gas flows in from the inlet end of the fluid channel of the valve body 1 and flows out from the outlet end; in a normal state, the lifting cap 9 is lifted upwards, the pull rod 7 and the permanent magnet 6 are mutually adsorbed, so that the slide block 3 is lifted, the push rod 2 moves forwards to expose an inlet end, so that fuel gas can flow in from the inlet end, and the air pressure inside and outside the membrane 8 is balanced; when the air pressure is under-pressure, the air pressure in the fluid channel is reduced, the membrane 8 moves downwards, the pull rod 7, the permanent magnet 6 and the slide block 3 are driven to move downwards, the position of the slide rod 21 on the push rod 2 in the slide way 31 moves to the upper end, so that the push rod 2 is driven to move backwards, the front end of the push rod 2 is blocked at the inlet end, the gas is prevented from flowing in, and the automatic closing of the self-closing valve is realized; when overpressure occurs to air pressure, the air pressure in the fluid channel is increased, the membrane 8 moves upwards, the pull rod 7 is driven to move upwards, so that the pull rod 7 is separated from the permanent magnet 6, the permanent magnet 6 and the sliding block 3 move downwards under the action of gravity, the position of the sliding rod 21 on the push rod 2 in the sliding channel 31 moves to the upper end, the push rod 2 is driven to move backwards, the front end of the push rod is blocked at the inlet end, and the automatic closing of the self-closing valve is realized.

This application only needs two parts can realize the self-closing function of self-closing valve through setting up push rod 2 and slider 3, simple structure, and it is easy to make.

A flat cushion block 4 is also arranged between the sliding block 3 and the permanent magnet 6, and the flat cushion block 4 is fixed on the side wall of the fluid channel through a screw; the flat cushion block 4 is provided with a through hole penetrating through two sides of the flat cushion block, the sliding block 3 is arranged on the lower side of the permanent magnet block 6, and the permanent magnet block 6 is arranged on the upper side of the flat cushion block 4 and is connected with the upper end of the sliding block 3 through a screw penetrating through the through hole.

Specifically, the upper end of the slider 3 is provided with a cylindrical fixing column 32, the outer diameter of the fixing column 32 is matched with the inner diameter of the through hole, and the fixing column 32 is matched in the through hole and can move up and down along the through hole.

A first limiting part 33 and a second limiting part 34 are fixedly arranged at the lower end of the fixing column 32, the first limiting part 33 and the second limiting part 34 are arranged at intervals, a push rod channel 35 for the push rod 2 to pass through is formed between the first limiting part 33 and the second limiting part 34, the slide ways 31 are respectively arranged on the side surfaces of the first limiting part 33 and the second limiting part 34, and the slide ways 31 penetrate through the two sides of the corresponding limiting parts; the sliding rods 21 are respectively arranged at two sides of the push rod 2 and are matched in the slide way 31.

The front end of the push rod 2 is matched in the inlet end of the fluid channel, the upper side, the lower side, the left side and the right side of the front end of the push rod 2 are respectively provided with an extending part 22 extending radially, the extending parts 22 are matched with the inner diameter of the inlet end of the fluid channel, the cross section of the front end of the push rod 2 is cross-shaped, and the front end of the push rod 2 is limited through the extending parts 22 on the upper side, the lower side, the left side and the right side of the push rod, so that the push rod is prevented from inclining in the moving process.

One end of the push rod 2 extends out of the inlet end of the fluid channel, the other end of the push rod passes through a push rod channel 35 between the first limiting part 33 and the second limiting part 34 and is positioned in the fluid channel, the size of the push rod channel 35 is matched with the thickness of the push rod 2, the first limiting part 33 and the second limiting part 34 limit the two sides of the push rod 2, and the push rod 2 is prevented from inclining when moving; the slideway 31 is obliquely arranged, and the distance between the upper end and the inlet end is larger than the distance between the lower end and the inlet end; the position of the sliding rod 21 on the push rod 2 in the slide way 31 is changed through the up-and-down movement of the sliding block 3, so that the push rod 2 is driven to move back and forth to open or close the valve.

A flat cushion block 4 with a through hole is arranged between the permanent magnet 6 and the sliding block 3, on one hand, a certain moving space is provided for the up-and-down movement of the sliding block 3, and on the other hand, the upper side of the push rod 2 is limited in the other direction.

Still be equipped with storage tank 11 in fluid passage's bottom, slider 3 arranges this storage tank 11 in, and the size, the height of this storage tank 11 all with slider 3 looks adaptation, carry on spacingly to slider 3 on the one hand, and on the other hand play certain guide effect when slider 3 reciprocates, prevent that slider 3 from taking place the slope when reciprocating.

In order to protect the permanent magnet 6, a protective sleeve 5 is further arranged, and the protective sleeve 5 is of a sleeve body structure with an opening at the upper end and wraps the lower end and the side face of the permanent magnet 6.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.

Claims

1. A gas self-closing valve comprises a valve body, a fluid passage penetrating through the valve body, a valve core arranged in the fluid passage to open or close the fluid passage, and a driving structure for controlling the action of the valve core, wherein the driving mechanism comprises a lifting cap, a pull rod, a membrane and a permanent magnet, one end of the pull rod penetrates through the membrane and is connected with the lifting cap, and the other end of the pull rod is adsorbed or separated from the permanent magnet; the valve core is characterized by comprising a push rod and a slide block, wherein the upper end of the slide block is fixedly connected with a permanent magnet, an inclined slide way is vertically arranged on the side surface of the slide block, the push rod is arranged in the fluid channel, a slide rod is arranged on the side surface of the push rod, and the slide rod is matched in the slide way of the slide block and can move along the slide way so as to drive the push rod to move along the fluid channel to open or close the fluid channel when the slide block moves up and down.

2. The gas self-closing valve according to claim 1, wherein a flat cushion block is further arranged between the sliding block and the permanent magnet block, a through hole is formed in the flat cushion block and penetrates through two sides of the flat cushion block, the sliding block is arranged on the lower side of the permanent magnet block, and the permanent magnet block is arranged on the upper side of the flat cushion block and is connected with the upper end of the sliding block through a screw penetrating through the through hole.

3. The gas self-closing valve according to claim 2, wherein the upper end of the sliding block is provided with a cylindrical fixing column, the outer diameter of the fixing column is matched with the inner diameter of the through hole, and the fixing column is matched in the through hole and can move up and down along the through hole.

4. The gas self-closing valve according to claim 3, wherein a first limit portion and a second limit portion are fixedly arranged at the lower end of the fixed column, the first limit portion and the second limit portion are arranged at intervals, a push rod channel for the push rod to pass through is formed between the first limit portion and the second limit portion, the slide ways are respectively arranged on the side surfaces of the first limit portion and the second limit portion, and the slide rods are respectively arranged on the two sides of the push rod and are matched in the slide ways.

5. The gas self-closing valve according to claim 4, wherein the slide way penetrates through both sides of the corresponding limiting part.

6. The gas self-closing valve according to claim 1, wherein one end of the push rod is fitted into the inlet end of the fluid channel, and the upper side, the lower side, the left side and the right side of one end of the push rod are respectively provided with an extension part extending radially thereto, and the extension part is adapted to the inner diameter of the inlet end of the fluid channel.

7. The gas self-closing valve according to claim 1, further comprising a protective sleeve, wherein the protective sleeve is of a sleeve body structure with an open upper end, and the protective sleeve is wrapped on the lower end and the side face of the permanent magnet.

8. The gas self-closing valve according to claim 1, wherein the bottom of the fluid channel is provided with a containing groove, the size and the height of the containing groove are matched with those of the sliding block, and the sliding block is arranged in the containing groove.