CN220622860U - Emergency cut-off valve for fuel gas - Google Patents

Abstract

The utility model relates to a gas emergency shut-off valve, which comprises a valve body and a coil assembly connected with the valve body, wherein an inlet and an outlet are formed at two sides of the valve body, a conduction channel is formed between the inlet and the outlet, the coil assembly comprises a shell, a coil, a movable iron core, a pull rod and a connecting rod, the coil is positioned in the shell, the two ends of the movable iron core are connected with the pull rod and the connecting rod, a sealing leather cup is sleeved on the connecting rod, a spring seat is sleeved outside the sealing leather cup, a valve core is further connected with the connecting rod, a spring is arranged between the valve core and the spring seat, and a diaphragm is sleeved outside the valve core. According to the utility model, the spring seat is arranged for realizing the abutting connection of the spring, meanwhile, the direct contact with the sealing leather cup is avoided, the condition that the sealing performance is reduced due to the extrusion deformation of the spring to the sealing leather cup in the prior art of the spring can be avoided, and meanwhile, the rubber sleeve is arranged in the inner hole of the movable iron core for increasing the connection reliability of the connecting rod, the pull rod and the movable iron core.

Description

Emergency cut-off valve for fuel gas

Technical Field

The utility model relates to the technical field of gas valves, in particular to a gas emergency cut-off valve.

Background

The gas emergency cut-off valve is a safety matching device in gas pipeline engineering, is widely applied to the field of medium-low pressure gas transmission and distribution, and is an indispensable safety device for industry, commerce and civilian use. The existing gas emergency cut-off valve generally assembles a coil assembly, a magnet assembly and a valve body together to form an electromagnetic gas emergency cut-off valve.

The prior gas emergency cutting-off is described in China patent publication No. CN207437799U, and comprises a valve body (1) with a gas channel inside and an opening (1 a) at the side part, a shell (2) connected to the opening (1 a) and a valve rod and a valve clack (3) both arranged in the shell (2), wherein the shell (2) is internally provided with a cylindrical sealing seat (4) made of hard materials, the inner cavity of the sealing seat (4) can be communicated with the gas channel, the inner end of the sealing seat (4) is in sealing connection with the valve body (1) positioned at the outer edge of the opening (1 a), the valve rod penetrates into the sealing seat (4) from the outer end of the sealing seat (4) and is axially fixed with the valve clack (3), and a sealing structure capable of sealing the sealing seat (4) and the valve rod is arranged between the sealing seat and the valve rod. Simultaneously, the inner side of the outer end of the sealing seat (4) is provided with a circular positioning part (4 a), the sealing groove is arranged on the inner side of the positioning part (4 a), a spring (6) is further arranged in the shell (2), one end of the spring (6) is sleeved on the outer side of the positioning part (4 a), and the other end of the spring is acted on the valve clack (3). The spring acts directly on the seal seat, and the spring has elasticity, and is easy to squeeze the seal seat when acting, so that the seal seat is deformed or damaged.

Disclosure of Invention

The utility model aims to provide a gas emergency cut-off valve so as to solve the technical problems.

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

the utility model provides a gas emergency cut-off valve, includes the valve body and the coil pack who is connected with the valve body, the valve body both sides form import and export and constitute the conduction path between the two, the coil pack includes shell, coil, moves iron core, pull rod, connecting rod, the coil is located in the shell, move the both ends of iron core and connect pull rod and connecting rod, the cover is equipped with sealed leather cup on the connecting rod, sealed leather cup overcoat is equipped with the spring holder, the connecting rod still is connected with the case, the case with be provided with the spring between the spring holder, the case overcoat is equipped with the diaphragm.

The utility model is further provided with inner holes formed at two ends of the movable iron core, a rubber sleeve is arranged in the inner holes, and the pull rod and the connecting rod are positioned in the rubber sleeve.

The coil assembly further comprises a coil support, a support plate and a U-shaped support, wherein the coil support and the U-shaped support are fixed on the support plate, the coil is sleeved on the coil support, the movable iron core is located in a hollow cavity formed in the coil support, and a guide hole for a pull rod to pass through is formed in the U-shaped support.

The utility model further provides that the valve body is connected with the shell through a screw.

The utility model has the beneficial effects that: according to the utility model, the spring seat is arranged for realizing the abutting connection of the spring, meanwhile, the direct contact with the sealing leather cup is avoided, the condition that the sealing performance is reduced due to the extrusion deformation of the spring to the sealing leather cup in the prior art of the spring can be avoided, and meanwhile, the rubber sleeve is arranged in the inner hole of the movable iron core for increasing the connection reliability of the connecting rod, the pull rod and the movable iron core.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is an exploded view 1 of an embodiment of the present utility model.

Reference numerals:

10. a valve body; 20. an inlet; 30. an outlet; 40. a conduction channel; 50. a housing; 60. a coil; 70. a movable iron core; 80. a pull rod; 90. a connecting rod; 100. sealing the leather cup; 110. a spring seat; 120. a valve core; 130. a spring; 140. a membrane; 150. an inner bore; 160. a rubber sleeve; 170. a coil support; 180. a support plate; 190. a U-shaped bracket; 200. a guide hole; 210. manually pulling the cover; 220. a protective cover;

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so that the implementation process of how the technical means are applied to solve the technical problems and achieve the technical effects of the present application can be fully understood and implemented accordingly.

As shown in fig. 1, the utility model relates to a gas emergency shut-off valve, which comprises a valve body 10 and a coil assembly connected with the valve body 10, wherein an inlet 20 and an outlet 30 are formed at two sides of the valve body 10 and a conduction channel 40 is formed between the inlet 20 and the outlet 30, the coil assembly comprises a shell 50, a coil 60, a movable iron core 70, a pull rod 80 and a connecting rod 90, the coil 60 is positioned in the shell 50, two ends of the movable iron core 70 are connected with the pull rod 80 and the connecting rod 90, a sealing cup 100 is sleeved on the connecting rod 90, a spring seat 110 is sleeved outside the sealing cup 100, a valve core 120 is further connected with the connecting rod 90, a spring 130 is arranged between the valve core 120 and the spring seat 110, a diaphragm 140 is sleeved outside the valve core 120, the pull rod 80 is connected with a manual pull cover 210, and a protective cover 220 for sealing the manual pull cover 210 is further arranged on the shell 50.

Inner holes 150 are formed at two ends of the movable iron core 70, rubber sleeves 160 are arranged in the inner holes 150, and the pull rod 80 and the connecting rod 90 are positioned in the rubber sleeves 160.

The coil assembly further comprises a coil 60 support, a support plate 180 and a U-shaped support 190, wherein the coil 60 support and the U-shaped support 190 are fixed on the support plate 180, the coil 60 is sleeved on the coil 60 support, the movable iron core 70 is located in a hollow cavity formed in the coil 60 support, and a guide hole 200 for the pull rod 80 to pass through is formed in the U-shaped support 190.

The valve body 10 is connected with the shell 50 through screws.

According to the utility model, the spring seat 110 is arranged for realizing the abutting connection of the spring 130 and avoiding the direct contact with the sealing leather cup 100, so that the condition that the sealing performance is reduced due to the extrusion deformation of the spring 130 to the sealing leather cup 100 in the prior art of the spring 130 can be avoided, and meanwhile, the rubber sleeve 160 cylinder is arranged in the inner hole 150 of the movable iron core 70 for increasing the connection reliability of the connecting rod 90, the pull rod 80 and the movable iron core 70.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (4)

1. The utility model provides a gas emergency cut-off valve, its characterized in that, including the valve body and with the coil pack that the valve body is connected, the valve body both sides form import and export and constitute the conduction path between the two, the coil pack includes shell, coil, moves iron core, pull rod, connecting rod, the coil is located in the shell, move the both ends of iron core and connect pull rod and connecting rod, the cover is equipped with sealed leather cup on the connecting rod, sealed leather cup overcoat is equipped with the spring holder, the connecting rod still is connected with the case, the case with be provided with the spring between the spring holder, the case overcoat is equipped with the diaphragm.

2. The gas emergency shut-off valve according to claim 1, wherein inner holes are formed at two ends of the movable iron core, rubber sleeves are arranged in the inner holes, and the pull rod and the connecting rod are located in the rubber sleeves.

3. The gas emergency shut-off valve of claim 2, wherein the coil assembly further comprises a coil support, a support plate and a U-shaped support, wherein the coil support and the U-shaped support are fixed on the support plate, the coil is sleeved on the coil support, the movable iron core is located in a hollow cavity formed in the coil support, and a guide hole for a pull rod to pass through is formed in the U-shaped support.

4. A gas emergency shut-off valve as in claim 3 wherein said valve body is connected to said housing by screws.