CN217977567U

CN217977567U - Integrated self-closing valve

Info

Publication number: CN217977567U
Application number: CN202222504828.3U
Authority: CN
Inventors: 陈才满
Original assignee: Zhejiang Zhehao Valve Co ltd
Current assignee: Zhejiang Zhehao Valve Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2022-12-06
Anticipated expiration: 2032-09-19

Abstract

The utility model provides an integral type self-closing valve belongs to pipeline valve technical field. The self-closing valve solves the problem that the existing self-closing valve is relatively complex in structure. This integral type self-closing valve, including having the inlet end and giving vent to anger the valve body of end, be provided with the pull rod on the valve body, be equipped with the diaphragm in the valve body, be equipped with in the valve body and constitute by slider and push rod, and realize the closing mechanism of self-closing valve switching through pull rod control, the position department that is close to the air inlet in the valve body sets up the air vent that supplies the push rod to pass, the push rod is worn out the air vent and is connected with the valve plate outward, the pull rod bottom is connected with the power rod, set up the sloping groove that contacts with the power rod on the slider rear end face, and through reciprocating of control pull rod and power rod to change the displacement around the slider, the terminal surface has the pillow block of evagination before the slider, the cooperation of push rod rear end gets into in the pillow block. The utility model has the advantages of the inner structure assembly is simple and the operational aging is high, the structural response is sensitive.

Description

Integrated self-closing valve

Technical Field

The utility model belongs to the technical field of the pipeline valve, a self-closing valve is related to, in particular to integral type self-closing valve.

Background

The self-closing valve for pipeline gas is installed on the pipeline of low pressure gas system, and when the gas supply pressure of the pipeline is under-pressure or over-pressure, it can be automatically closed and manually opened without using electricity or other external power.

The self-closing valve on the market realizes the switching of valve rod through link mechanism. However, as is known, the link mechanism is formed by combining a plurality of links movably connected with each other, and in actual work, the mechanism is troublesome to assemble, high in failure rate, relatively complex in structure and frequent in maintenance.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure and integral type self-closing valve that work efficiency is high.

The purpose of the utility model can be realized by the following technical proposal: the integrated self-closing valve is characterized in that a slide block and a push rod are arranged in the valve body, a switching mechanism for realizing the switching of the self-closing valve is controlled by the pull rod, an air vent for the push rod to pass through is formed in the position, close to the air inlet, in the valve body, a valve plate penetrates out of the air vent, a power rod is connected to the bottom of the pull rod, a slope groove in contact with the power rod is formed in the rear end face of the slide block, the front and rear displacement of the slide block is changed by controlling the upward and downward movement of the pull rod and the power rod, a boss protruding outwards protrudes from the front end face of the slide block, the rear end of the push rod is matched with the boss, positioning holes corresponding to each other are formed in the boss and the push rod, and the two positioning holes are connected in a positioning mode through column bolts.

In the integrated self-closing valve, the inner wall of the valve body is provided with two guide plates which are symmetrically arranged front and back, and the front end wall and the rear end wall of the sliding block are provided with guide grooves for the corresponding guide plates to be inserted.

In the integrated self-closing valve, the valve body is internally provided with a fixed sleeve at the position of the air inlet, the middle part of the fixed sleeve is provided with an air passing hole, and an elastic part is arranged between the fixed sleeve and the valve plate.

In the above one type of integrated self-closing valve, the bottom end of the power rod is of a spherical structure.

In the integrated self-closing valve, a positioning disc for the power rod to penetrate out and limit through a diaphragm is further arranged in the valve body.

In the integrated self-closing valve, the valve plate is provided with a sealing ring which is in contact with the corresponding inner wall of the valve body.

Compared with the prior art, the integrated self-closing valve has the advantages of simple assembly of the internal structure, high working timeliness and sensitive structural reaction.

Drawings

FIG. 1 is a schematic cross-sectional view of the present integrated self-closing valve.

Fig. 2 is a perspective view of the opening and closing mechanism.

In the figure, 1, an air inlet end; 2. an air outlet end; 3. a valve body; 4. a pull rod; 5. a membrane; 6. a slider; 7. a push rod; 8. a vent hole; 9. a valve plate; 10. a power rod; 11. a ramp groove; 12. a pillow block; 13. positioning holes; 14. a guide plate; 15. fixing a sleeve; 16. an elastic member; 17. positioning a plate; 18. and (5) sealing rings.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the integrated self-closing valve comprises a valve body 3 with an air inlet end 1 and an air outlet end 2, a pull rod 4 is arranged on the valve body 3, a diaphragm 5 is arranged in the valve body 3, a slider 6 and a push rod 7 are arranged in the valve body 3, and an opening and closing mechanism for opening and closing the self-closing valve is controlled by the pull rod 4, a vent hole 8 for the push rod 7 to pass through is formed in the position, close to the air inlet, in the valve body 3, the push rod 7 penetrates out of the vent hole 8 and is externally connected with a valve plate 9, a power rod 10 is connected to the bottom of the pull rod 4, a slope groove 11 in contact with the power rod 10 is formed in the rear end face of the slider 6, the front and rear displacements of the slider 6 are changed by controlling the upward and downward movements of the pull rod 4 and the power rod 10, a boss 12 protruding out is arranged on the front end face of the slider 6, the rear end of the push rod 7 is matched and enters the boss 12 and the push rod 7, positioning holes 13 corresponding to each other, and the two positioning holes 13 are connected by bolts.

As shown in fig. 2, two guide plates 14 are symmetrically arranged in front and back on the inner wall of the valve body 3, and guide grooves for the corresponding guide plates 14 to access are formed in the front and back end walls of the slider 6, so as to realize the front and back movement of the slider 6.

Preferably, a fixed sleeve 15 is arranged in the valve body 3 and at the position of the air inlet end 1, a gas passing hole is formed in the middle of the fixed sleeve 15, and an elastic part 16 is arranged between the fixed sleeve 15 and the valve plate 9.

Preferably, the bottom end of the power rod 10 is of a spherical structure.

Preferably, a positioning disc 17 for the power rod 10 to penetrate out and to be limited by the diaphragm 5 is further arranged in the valve body 3.

In order to improve the sealing performance, the valve plate 9 is provided with a sealing ring 18 which is in contact with the corresponding inner wall of the valve body 3.

The pull rod 4 is pressed downwards to force the power rod 10 to be pressed downwards, and under the assistance of the guide groove guide plate 14, the power rod 10 applies pressure to the slope groove 11, so that the slide block 6 is driven to move forwards and is in a ventilation state;

when under-pressure and overpressure occur, the self-closing valve is triggered, the pull rod 4 is lifted to reset, and the opening and closing mechanism is reset to block the vent hole 8 under the action of the elastic piece 16, so that the gas is cut off.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the air inlet end 1, the air outlet end 2, the valve body 3, the pull rod 4, the diaphragm 5, the slider 6, the push rod 7, the vent hole 8, the valve plate 9, the power rod 10, the slope groove 11, the pillow block 12, the positioning hole 13, the guide plate 14, the fixing sleeve 15, the elastic member 16, the positioning disc 17, the sealing ring 18, etc., are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any one of the additional limitations of the present invention.

Claims

1. The integrated self-closing valve comprises a valve body (3) with an air inlet end (1) and an air outlet end (2), wherein a pull rod (4) is arranged on the valve body (3), a diaphragm (5) is arranged in the valve body (3), the integrated self-closing valve is characterized in that the valve body (3) is internally provided with a sliding block (6) and a push rod (7), a switching mechanism for controlling the self-closing valve to be switched on and off is realized through the pull rod (4), a vent hole (8) for the push rod (7) to pass through is formed in the position, close to an air inlet, of the valve body (3), the push rod (7) penetrates through the vent hole (8) and is externally connected with a valve plate (9), the bottom of the pull rod (4) is connected with a power rod (10), a slope groove (11) which is in contact with the power rod (10) is formed in the rear end face of the sliding block (6), the front end face of the sliding block (6) is provided with an outer protruding boss (12), the rear end of the push rod (7) is matched with the boss (12) and is connected with a positioning hole (13) through a positioning bolt (13), and two positioning holes (13) are formed in a bolt.

2. An integrated self-closing valve according to claim 1, wherein the inner wall of the valve body (3) is provided with two guide plates (14) which are symmetrically arranged in front and back, and the front and back end walls of the sliding block (6) are provided with guide grooves for the corresponding guide plates (14) to be inserted.

3. An integral self-closing valve according to claim 1, characterised in that a fixing sleeve (15) is arranged in the valve body (3) and at the position of the air inlet end (1), an air passing hole is arranged in the middle of the fixing sleeve (15), and an elastic element (16) is arranged between the fixing sleeve (15) and the valve plate (9).

4. An integral self-closing valve according to claim 1, characterised in that the bottom end of the powered rod (10) is of spherical configuration.

5. An integrated self-closing valve according to claim 1, wherein a positioning disc (17) for the power rod (10) to penetrate out and to be limited by the diaphragm (5) is further arranged in the valve body (3).

6. An integral self-closing valve according to claim 1, characterised in that said valve plate (9) is provided with a sealing ring (18) in contact with the corresponding inner wall of the valve body (3).