CN213393610U

CN213393610U - Selection valve for fire extinguishing system

Info

Publication number: CN213393610U
Application number: CN202022266919.9U
Authority: CN
Inventors: 张文彬; 王愈
Original assignee: Taizhou Sujie Valve Co ltd
Current assignee: Taizhou Sujie Valve Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-06-08
Anticipated expiration: 2030-10-13

Abstract

The utility model provides a selection valve for fire extinguishing system belongs to fire-fighting equipment technical field. It has solved the selector valve problem for current fire extinguishing systems. This selector valve for fire extinguishing systems includes the valve rod, be the valve body of tube-shape, the lateral part of valve body has the air inlet, the one end of valve body is the gas outlet, the other end threaded connection of valve body has the cylinder body, the cylinder body has linked firmly the cylinder cap, the valve rod is worn to locate in the cylinder body, the valve rod has linked firmly the piston that is located the cylinder body, the piston separates the cylinder body inner chamber for the chamber of exhausting and the chamber of admitting air, be equipped with the pipeline of intercommunication chamber of admitting air and air inlet on the valve body, be equipped with the control valve of control duct break-make on the pipeline, the cylinder cap has the exhaust hole that communicates in the chamber of exhausting. The utility model has the advantages of compact structure, automatic reset and the like.

Description

Selection valve for fire extinguishing system

Technical Field

The utility model belongs to the technical field of fire-fighting equipment, a selection valve is related to, in particular to selection valve for fire extinguishing system.

Background

The selector valve is widely applied to a fire-fighting gas fire-extinguishing system, is important equipment for controlling the remote conveying direction of fire-extinguishing gas, and generally comprises a valve body, a valve rod, a corresponding locking opening mechanism and the like.

For example, chinese patent literature discloses a gas fire extinguishing system selector valve [ application No.: 200420013996.1, respectively; authorization notice number: CN2748723Y ], which comprises a valve body, a valve flap shaft, a sealing ring, a gas storage cavity sealing ring, a cylinder body, a piston sealing ring, a valve flap shaft end screw and a manual control valve, wherein the valve body is provided with an inlet and an outlet, the valve flap shaft is arranged in the valve body cavity, one end of the valve flap shaft is positioned at the outlet of the valve body, a gas storage cavity is arranged between the other end of the valve flap shaft and the valve body, the top end of the valve flap shaft is in screw connection with the piston through the valve flap shaft end screw, the manual control valve is arranged at the top end of the valve body, the manual control valve is provided with a manual control valve body, a valve core, a pressing sleeve sealing ring, a spring, a valve cap, a manual control valve piston, a cylindrical pin and a deflector rod, the inlet of the manual control valve body is communicated with a selection valve body, the pressing, the copper pipe is connected with a three-way joint, and one port of the three-way joint is connected with a cylinder body of the selector valve.

The manual control valve in the selector valve of the gas fire extinguishing system controls gas to enter the cylinder, the valve is opened, manual operation time and labor are saved, the valve clack shaft cannot be automatically reset, manual reset is needed, operation is inconvenient, and due to the arrangement of the gas storage cavity and the damping hole, processing is not convenient, the axial length is increased, the size is increased, and installation and arrangement are not convenient.

Disclosure of Invention

The utility model aims at the above problems in the prior art and provides a selector valve for fire extinguishing system with compact structure and automatic reset.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a selector valve for fire extinguishing systems, includes the valve rod, is the valve body of tube-shape, the lateral part of valve body the air inlet has, the one end of valve body is the gas outlet, and the other end threaded connection of valve body has the cylinder body, the cylinder body link firmly the cylinder cap, the valve rod wear to locate in the cylinder body, the valve rod link firmly the piston that is located the cylinder body, the piston separate the cylinder body inner chamber for the exhaust chamber and the chamber of admitting air, the valve body on be equipped with the pipeline that the intercommunication was admitted air chamber and air inlet, the pipeline on be equipped with the control valve of control duct break-make, a serial communication port, the cylinder cap exhaust hole that feeds through in the exhaust chamber has the elastic component, the exhaust intracavity be equipped with the elastic component, the elastic component provide elasticity and.

In the above-mentioned selector valve for fire extinguishing system, the elastic member is a spring, one end of the spring abuts against the cylinder cover, and the other end of the spring abuts against the piston.

In the above-mentioned selector valve for fire extinguishing system, the cylinder cap has a groove for receiving the end of the spring, the valve stem is disposed through the spring, the cylinder cap has a through hole for the end of the valve stem to pass through, and the piston has an annular groove for the end of the spring to be inserted into.

In the above-mentioned selector valve for fire extinguishing system, the valve rod is of a monolithic structure.

In the above selection valve for fire extinguishing system, the end of the valve rod at the air outlet is provided with a convex ring protruding radially outwards, the inner end of the air outlet is provided with a conical surface, the outer wall of the inner end of the convex ring is provided with a conical surface matched with the conical surface, the outer wall of the outer end of the convex ring is embedded with a sealing ring sealed at the air outlet, and the outer end of the convex ring is connected with a pressing sheet for pressing the sealing ring through a screw.

In the above-mentioned selector valve for fire extinguishing systems, the cylinder body and the screw thread section of valve body threaded connection have axial extension and be the guide part of tube-shape, the outer wall of valve rod contact with the inner wall between screw thread section and the guide part, the guide part inlay and be equipped with the sealing washer sealed in the valve rod.

In foretell a selection valve for fire extinguishing systems, the piston cover locate on the valve rod, the valve rod has the fender shoulder that supplies the inboard conflict of piston, valve rod threaded connection have the lock nut who compresses tightly the piston outside, the outer wall of piston inlay and be equipped with the O type circle one sealed in the cylinder body inner wall, the inner wall of piston inlays and is equipped with the O type circle two sealed in the valve rod.

In the above-mentioned selection valve for fire extinguishing system, a rubber ring is arranged between the cylinder body and the valve body.

Compared with the prior art, the selector valve for the fire extinguishing system is compact in structure, convenient to install and arrange, time-saving and labor-saving, and capable of achieving the purpose of repeated use, and the piston and the valve rod are automatically reset through the elastic piece.

Drawings

Fig. 1 is a perspective view of the selector valve for the fire extinguishing system.

Fig. 2 is a structural sectional view of the selector valve for fire extinguishing system.

In the figure, 1, a valve rod; 2. a valve body; 3. an air inlet; 4. an air outlet; 5. a cylinder body; 6. a cylinder cover; 7. a piston; 8. an exhaust chamber; 9. an air inlet cavity; 10. a pipeline; 11. a control valve; 12. an exhaust hole; 13. a spring; 14. a groove; 15. a convex ring; 16. a seal ring; 17. a compression sheet; 18. a screw; 19. a threaded segment; 20. a guide portion; 21. a seal ring; 22. a shoulder block; 23. locking the nut; 24. a first O-shaped ring; 25. an O-shaped ring II; 26. and (4) a rubber ring.

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 selector valve for the fire extinguishing system comprises a valve rod 1, a cylindrical valve body 2, an air inlet 3 is formed in the side portion of the valve body 2, an air outlet 4 is formed in one end of the valve body 2, a cylinder body 5 is connected to the other end of the valve body 2 in a threaded manner, a cylinder cover 6 is fixedly connected to the cylinder body 5, the valve rod 1 is arranged in the cylinder body 5 in a penetrating manner, a piston 7 located in the cylinder body 5 is fixedly connected to the valve rod 1, the piston 7 divides an inner cavity of the cylinder body 5 into an exhaust cavity 8 and an air inlet cavity 9, a pipeline 10 communicated with the air inlet cavity 9 and the air inlet 3 is arranged on the valve body 2, a control valve 11 for controlling the on-off of the pipeline 10 is arranged on the pipeline 10, the cylinder cover 6 is provided with an.

The selector valve for the fire extinguishing system omits a gas storage cavity and a damping hole which are positioned in the valve body 2 in the past, shortens the axial length, and has compact structure and convenient installation and arrangement; when the control valve 11 closes the pipeline 10, the valve rod 1 cannot be pushed no matter how large the pressure of the air inlet 3 is, the air outlet 4 is opened, the control valve 11 is required to open the pipeline 10, the air of the air inlet 3 enters the air inlet cavity 9 through the pipeline 10, the pressure of the air in the air inlet cavity 9 overcomes the elastic force of the elastic piece to enable the piston 7 to drive the valve rod 1 to move, the air in the air outlet cavity 8 is exhausted from the air exhaust hole 12, the air outlet cavity 8 has a buffering effect, the air outlet 4 is opened, when the air pressure (generally set to be two megapascals) in the air inlet cavity 9 is smaller than the elastic force of the elastic piece, the elastic piece pushes the piston 7 and the valve rod 1 to enable the valve rod 1 to be plugged in the air outlet 4 again, the automatic resetting effect is achieved, and the purpose of repeated.

In more detail, in this embodiment, the elastic member is a spring 13, one end of the spring 13 abuts against the cylinder cover 6, the other end of the spring 13 abuts against the piston 7, and the spring 13 provides an elastic force so that the valve rod 1 fixedly connected with the piston 7 always has a tendency of being blocked at the air outlet 4; the cylinder cover 6 is provided with a groove 14 for accommodating the end part of the spring 13, the valve rod 1 penetrates through the spring 13, the cylinder cover 6 is provided with a through hole for the end part of the valve rod 1 to penetrate through, the piston 7 is provided with an annular groove for the end part of the spring 13 to be embedded into, and therefore the spring 13 is positioned stably and cannot deviate, and the working stability is good.

The valve rod 1 is of an integral structure, so that the valve rod 1 is convenient to manufacture, high in structural strength and long in service life. The end part of the valve rod 1 at the gas outlet 4 is provided with a convex ring 15 which protrudes outwards in the radial direction, the inner end of the gas outlet 4 is provided with a conical surface, the outer wall of the inner end of the convex ring 15 is provided with a conical surface matched with the conical surface, the outer wall of the outer end of the convex ring 15 is embedded with a sealing ring 16 sealed at the gas outlet 4, the outer end part of the convex ring 15 is connected with a pressing sheet 17 pressing the sealing ring 16 through a screw 18, and therefore the sealing performance between the valve rod 1 and the.

The threaded section 19 of the threaded connection between the cylinder body 5 and the valve body 2 is provided with a cylindrical guide part 20 which extends axially, the outer wall of the valve rod 1 is contacted with the inner walls of the threaded section 19 and the guide part 20, and a sealing ring 21 which is sealed on the valve rod 1 is embedded in the guide part 20, so that the valve rod 1 moves stably in the axial direction, and the sealing performance between the valve rod 1 and the cylinder body 5 is good and cannot leak; the piston 7 is sleeved on the valve rod 1, the valve rod 1 is provided with a retaining shoulder 22 for abutting against the inner side of the piston 7, the valve rod 1 is in threaded connection with a locking nut 23 for pressing the outer side of the piston 7 tightly, an O-shaped ring I24 sealed on the inner wall of the cylinder body 5 is embedded in the outer wall of the piston 7, and an O-shaped ring II 25 sealed on the valve rod 1 is embedded in the inner wall of the piston 7, so that the piston 7 is convenient to connect and good in connection firmness, the sealing performance of the outer wall and the inner wall of the piston 7 is good, leakage is avoided; and a rubber ring 26 is arranged between the cylinder body 5 and the valve body 2, so that the sealing property is ensured, and the gas is prevented from leaking.

Those not described in detail in this specification are within the skill of the art. 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.

Claims

1. The utility model provides a selector valve for fire extinguishing system, includes valve rod (1), is the valve body (2) of tube-shape, the lateral part of valve body (2) air inlet (3) have, the one end of valve body (2) is gas outlet (4), the other end threaded connection of valve body (2) has cylinder body (5), cylinder body (5) linked firmly cylinder cap (6), valve rod (1) wear to locate in cylinder body (5), valve rod (1) linked firmly piston (7) that are located cylinder body (5), piston (7) separate cylinder body (5) inner chamber for exhaust chamber (8) and admit air chamber (9), valve body (2) on be equipped with pipeline (10) that communicate chamber (9) and air inlet (3) of admitting air, pipeline (10) on be equipped with control valve (11) of control duct (10) break-make, its characterized in that cylinder cap (6) have the exhaust hole (12) that communicate in exhaust chamber (8), an elastic piece is arranged in the exhaust cavity (8), and the elastic piece provides elastic force to enable the valve rod (1) to always have the tendency of being blocked at the air outlet (4).

2. Selector valve for fire extinguishing system according to claim 1, characterized in that said elastic element is a spring (13), one end of spring (13) abutting against cylinder cover (6) and the other end of spring (13) abutting against piston (7).

3. A selector valve for fire extinguishing system according to claim 2, characterized in that said cylinder head (6) has a recess (14) for receiving the end of a spring (13), said valve stem (1) being arranged through the spring (13), said cylinder head (6) having a through hole for the end of the valve stem (1) to pass through, said piston (7) having an annular groove for the end of the spring (13) to engage.

4. A selector valve for fire extinguishing systems according to claim 3, characterized in that the valve stem (1) is of unitary construction.

5. The selector valve for fire extinguishing system according to claim 4, wherein the valve stem (1) has a radially protruding collar (15) at the end of the air outlet (4), the inner end of the air outlet (4) has a conical surface, the outer wall of the inner end of the collar (15) has a conical surface matching the conical surface, the outer wall of the outer end of the collar (15) is embedded with a sealing ring (16) sealed in the air outlet (4), and the outer end of the collar (15) is connected with a pressing plate (17) pressing the sealing ring (16) through a screw (18).

6. A selector valve for fire extinguishing system according to claim 5, characterized in that the threaded section (19) of the cylinder (5) in threaded connection with the valve body (2) has an axially extending and cylindrical guide (20), the outer wall of the valve stem (1) is in contact with the inner walls of both the threaded section (19) and the guide (20), and the guide (20) is fitted with a sealing ring (21) sealed to the valve stem (1).

7. The selector valve for the fire extinguishing system according to claim 6, wherein the piston (7) is sleeved on the valve rod (1), the valve rod (1) is provided with a blocking shoulder (22) for abutting against the inner side of the piston (7), the valve rod (1) is in threaded connection with a locking nut (23) for pressing the outer side of the piston (7), the outer wall of the piston (7) is embedded with a first O-ring (24) sealed on the inner wall of the cylinder body (5), and the inner wall of the piston (7) is embedded with a second O-ring (25) sealed on the valve rod (1).

8. A selector valve for fire extinguishing systems according to claim 7, characterised in that a rubber ring (26) is provided between the cylinder (5) and the valve body (2).