CN216447482U

CN216447482U - Axial flow type safety cut-off valve

Info

Publication number: CN216447482U
Application number: CN202122490798.0U
Authority: CN
Inventors: 房慧琪; 陈双河; 冯涛; 郭晓平
Original assignee: Jiangsu Chenggong Valve Technology Co ltd
Current assignee: Jiangsu Chenggong Valve Technology Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-06
Anticipated expiration: 2031-10-15

Abstract

The utility model belongs to the technical field of cut-off valves, and particularly relates to an axial flow type safety cut-off valve which comprises a valve body, wherein a cut-off box is fixedly connected inside the valve body, the upper end of the valve body is connected with an end cover through threads, a guide rod is slidably connected inside the end cover, a sealing plate is fixedly connected at the lower end of the guide rod and is slidably connected with the cut-off box, a spring is arranged on the outer side of the guide rod, and a sealing pipe is fixedly connected on the cut-off box. According to the utility model, the L-shaped pipe, the first sealing plug, the second sealing plug, the clamping frame and the like are additionally arranged on the valve body, when the pressure in the valve body is overlarge, the first sealing plug is pushed, the second sealing plug is pushed by the first sealing plug, so that the clamping frame is driven to move, the clamping block is separated from the connecting groove, and after the clamping block is separated, the spring can push the sealing plate to seal the through hole of the cut-off box, so that the automatic use of the safety cut-off valve can be realized under the driving of no extra power.

Description

Axial flow type safety cut-off valve

Technical Field

The utility model relates to the technical field of shut-off valves, in particular to an axial flow type safety shut-off valve.

Background

The cut-off valve is one kind of executing mechanism in automatic system and consists of multiple spring pneumatic film executing mechanism or floating piston executing mechanism and regulating valve. The use of trip valve is very wide, can be used to cut off coal gas, combustion air, cold wind and flue gas etc. but the trip valve among the prior art needs extra drive to transmit when using, leads to the device unable use when having a power failure to the sealed effect of valve body is poor in the in-process of using. Accordingly, there is a need for improvements in the art.

Disclosure of Invention

The utility model aims to provide an axial flow type safety shut-off valve, which solves the problems that a valve body needs to be additionally driven and the sealing effect of the valve body is poor.

In order to achieve the purpose, the utility model provides the following technical scheme: axial-flow type safety shut-off valve, which comprises a valve body, the box is cuted to the inside fixedly connected with of valve body, there is the end cover upper end of valve body through threaded connection, the inside sliding connection of end cover has the guide bar, the lower extreme fixedly connected with closing plate of guide bar, the closing plate with cute box sliding connection, the outside of guide bar is provided with the spring, cut fixedly connected with sealing tube on the box, the outside of sealing tube bonds there is sealed glue, the inside fixedly connected with limiting plate of valve body, fixedly connected with L type pipe on the valve body, the inside sliding connection of L type pipe has sealing plug one, the inside sliding connection of L type pipe has sealing plug two, fixedly connected with joint frame on the sealing plug two, the inside fixedly connected with fixture block of joint frame, the spread groove has been seted up on the guide bar.

Preferably, the sealant is adhered to the valve body, the sealant is adhered to the cut-off box, and a through hole is formed in the cut-off box.

Preferably, one end of the spring is fixedly connected with the sealing plate, and the other end of the spring is fixedly connected with the limiting plate.

Preferably, the connecting groove is clamped with the clamping block, and the guide rod is connected with the limiting plate in a sliding mode.

Preferably, the clamping frame is fixedly connected with a positioning rod, and the positioning rod is connected with the valve body in a sliding manner.

Preferably, the valve body is fixedly connected with two flanges, and the two flanges are symmetrically distributed on the valve body.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the L-shaped pipe, the first sealing plug, the second sealing plug, the clamping frame and the like are additionally arranged on the valve body, when the pressure in the valve body is overlarge, the first sealing plug is pushed, the second sealing plug is pushed by the first sealing plug, so that the clamping frame is driven to move, the clamping block is separated from the connecting groove, and after the clamping block is separated, the spring can push the sealing plate to seal the through hole of the cut-off box, so that the automatic use of the safety cut-off valve can be realized under the driving of no extra power.

2. According to the utility model, the structure of the sealant, the sealing pipe and the like is additionally arranged in the valve body, and after the valve body is installed, the joint of the valve body and the cut-off box can be sealed through the sealant, so that the whole sealing property of the valve body can be improved.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a front cross-sectional view of FIG. 1 of the present invention;

fig. 3 is an enlarged view of the structure of part a of fig. 2 according to the present invention.

In the figure: 1. a valve body; 2. cutting off the box; 3. an end cap; 4. a guide bar; 5. sealing plates; 6. a spring; 7. a sealing tube; 8. sealing glue; 9. an L-shaped pipe; 10. sealing a first plug; 11. clamping the frame; 12. a clamping block; 13. connecting grooves; 14. positioning a rod; 15. a flange; 16. a limiting plate; 17. and a second sealing plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an axial flow type safety shut-off valve comprises a valve body 1, a cut-off box 2 is fixedly connected inside the valve body 1, an end cover 3 is connected to the upper end of the valve body 1 through a thread, a guide rod 4 is slidably connected inside the end cover 3, a sealing plate 5 is fixedly connected to the lower end of the guide rod 4, the sealing plate 5 is slidably connected to the cut-off box 2, a spring 6 is arranged outside the guide rod 4, a sealing pipe 7 is fixedly connected to the cut-off box 2, a sealant 8 is bonded outside the sealing pipe 7, a limiting plate 16 is fixedly connected inside the valve body 1, an L-shaped pipe 9 is fixedly connected to the valve body 1, a circulation groove is formed in the bottom of the L-shaped pipe 9, a first sealing plug 10 is slidably connected inside the L-shaped pipe 9, a second sealing plug 17 is slidably connected inside the L-shaped pipe 9, a clamping frame 11 is fixedly connected to the second sealing plug 17, and a clamping block 12 is fixedly connected inside the clamping frame 11, the guide rod 4 is provided with a connecting groove 13.

Referring to fig. 2, the sealant 8 is adhered to the valve body 1, the sealant 8 is adhered to the cut-off box 2, and the cut-off box 2 is provided with a through hole through which fluid can flow.

Referring to fig. 2, one end of the spring 6 is fixedly connected to the sealing plate 5, the other end of the spring 6 is fixedly connected to the limiting plate 16, and the spring 6 can drive the sealing plate 5 to seal the blocking box 2.

Referring to fig. 3, the connecting groove 13 is engaged with the latch 12, the guide rod 4 is slidably connected with the limiting plate 16, and the latch 12 can limit the guide rod 4.

Referring to fig. 3, a positioning rod 14 is fixedly connected to the clamping frame 11, the positioning rod 14 is slidably connected to the valve body 1, and the positioning rod 14 supports the clamping frame 11.

Referring to fig. 1, two flanges 15 are fixedly connected to a valve body 1, the two flanges 15 are symmetrically distributed on the valve body 1, and the valve body 1 is connected to a pipeline through the flanges 15.

The specific implementation process of the utility model is as follows: when the internal pressure of the valve body 1 is overlarge, the pressure pushes the first sealing plug 10 to move upwards, the first sealing plug 10 pushes the second sealing plug 17 to move through liquid in the L-shaped pipe 9, the second sealing plug 17 drives the clamping frame 11 to move, the clamping frame 11 drives the clamping block 12 to move in the moving process, when the clamping block 12 is separated from the connecting groove 13, the originally compressed spring 6 resets, the spring 6 drives the sealing plate 5 to seal a through hole in the cut-off box 2 through elasticity, and therefore automatic cut-off can be completed;

when using valve body 1, sealed glue 8 can seal the junction between valve body 1 and the box 2 of cuting to can promote the whole leakproofness of valve body 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Axial-flow type safety shut-off valve, including valve body (1), its characterized in that: the sealing structure is characterized in that the inside of the valve body (1) is fixedly connected with a cut-off box (2), the upper end of the valve body (1) is connected with an end cover (3) through threads, the inside of the end cover (3) is connected with a guide rod (4) in a sliding manner, the lower end of the guide rod (4) is fixedly connected with a sealing plate (5), the sealing plate (5) is connected with the cut-off box (2) in a sliding manner, a spring (6) is arranged on the outside of the guide rod (4), a sealing pipe (7) is fixedly connected onto the cut-off box (2), a sealing plug (8) is bonded onto the outside of the sealing pipe (7), a limiting plate (16) is fixedly connected onto the inside of the valve body (1), an L-shaped pipe (9) is fixedly connected onto the valve body (1), a first sealing plug (10) is connected onto the inside of the L-shaped pipe (9), a second sealing plug (17) is connected onto the inside of the L-shaped pipe (9) in a sliding manner, fixedly connected with joint frame (11) on sealing plug two (17), the inside fixedly connected with fixture block (12) of joint frame (11), spread groove (13) have been seted up on guide bar (4).

2. The axial flow type safety shut-off valve according to claim 1, characterized in that: the sealing glue (8) is adhered to the valve body (1), the sealing glue (8) is adhered to the cut-off box (2), and a through hole is formed in the cut-off box (2).

3. The axial flow type safety shut-off valve according to claim 1, characterized in that: one end of the spring (6) is fixedly connected with the sealing plate (5), and the other end of the spring (6) is fixedly connected with the limiting plate (16).

4. The axial flow type safety shut-off valve according to claim 1, characterized in that: the connecting groove (13) is clamped with the clamping block (12), and the guide rod (4) is connected with the limiting plate (16) in a sliding mode.

5. The axial flow type safety shut-off valve of claim 1, wherein: a positioning rod (14) is fixedly connected to the clamping frame (11), and the positioning rod (14) is connected with the valve body (1) in a sliding mode.

6. The axial flow type safety shut-off valve according to claim 1, characterized in that: two flanges (15) are fixedly connected to the valve body (1), and the two flanges (15) are symmetrically distributed on the valve body (1).