CN214838662U

CN214838662U - Gravity type safety valve

Info

Publication number: CN214838662U
Application number: CN202121740811.7U
Authority: CN
Inventors: 谢正本; 金兴成; 杨淑丽; 谢德银; 金温乐
Original assignee: Lite Valve Technology Co ltd
Current assignee: Lite Valve Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-11-23
Anticipated expiration: 2031-07-29

Abstract

The utility model relates to a gravity type relief valve. The main problem of solving current relief valve structure more complicated, with high costs and occupation space big. The method is characterized in that: valve cap (3) are installed to the upper end slide card of disk seat (1), valve cap (3) can be disk seat (1) relative freely move from top to bottom in certain extent, valve flap (2) are inlayed in valve cap (3), and valve flap (2) can be with the upper end laminating of disk seat (1) and seal. The utility model discloses utilize the gravity of valve cap to make the valve clack return the seat and close the valve, simple structure, it is with low costs, occupation space is little, and convenience of customers installs and uses on low pressure pipeline under pressure equipment.

Description

Gravity type safety valve

Technical Field

The utility model relates to a valve, concretely relates to gravity type relief valve.

Background

The safety valve is mainly used to control the internal pressure of boiler, pressure container and pipeline not to exceed the specified value so as to prevent the equipment from being damaged or injuring people due to over-high pressure. When the safety valve is used in low-pressure pipeline equipment (such as a small steam boiler), the existing safety valve has the defects of complex structure, high cost, large volume, large occupied space and limited space, and brings inconvenience to a user when the safety valve is installed on the low-pressure pipeline equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that current relief valve structure is more complicated, with high costs and occupation space is big, the utility model provides a gravity type relief valve, this gravity type relief valve utilize the gravity of valve cap to make the valve clack return the seat and close the valve, simple structure, it is with low costs, occupation space is little, convenience of customers uses on low pressure pipeline equipment installation.

The technical scheme of the utility model is that: this gravity type relief valve, including disk seat and valve clack, the valve cap is installed to the upper end sliding clamp of disk seat, the valve cap can be relative disk seat freely move from top to bottom within a certain limit, the valve clack is inlayed in the valve cap, and the valve clack can be with the upper end laminating of disk seat and sealed.

The inner wall lower extreme of valve cap is equipped with the draw-in groove, installs the jump ring in the draw-in groove, the outer wall of the upper end of disk seat is equipped with the spacing groove, and the jump ring is located the spacing inslot.

The side wall of the valve cap is provided with a discharge hole.

The lower end of the valve seat is provided with external threads.

The utility model discloses following beneficial effect has: due to the adoption of the technical scheme, when the pressure of the medium in the container or the pipeline is higher than a set value, the medium overcomes the gravity of the valve cap, the valve cap is pushed to move upwards, and the medium is discharged; when the pressure of medium in the container or pipeline is lower than the set value, the valve flap automatically returns to the seat under the action of the gravity of the valve cap. The set point of the medium pressure in the container or pipe can be set by increasing or decreasing the weight of the bonnet. The utility model discloses utilize the gravity of valve cap to make the valve clack return the seat and close the valve, simple structure, it is with low costs, occupation space is little, and convenience of customers installs and uses on low pressure pipeline under pressure equipment.

Drawings

Fig. 1 is a structural sectional view of the present invention.

In the figure, 1-valve seat, 2-valve flap, 3-valve cap, 4-clamping groove, 5-clamping spring, 6-limiting groove, 7-discharge hole and 8-external thread.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, the gravity type safety valve includes a valve seat 1 and a valve flap 2, a valve cap 3 is slidably mounted on an upper end of the valve seat 1, the valve cap 3 can freely move up and down in a certain range relative to the valve seat 1, the valve flap 2 is embedded in the valve cap 3, and the valve flap 2 can be attached to and sealed with an upper end of the valve seat 1. Due to the adoption of the technical scheme, when the pressure of the medium in the container or the pipeline is higher than a set value, the medium overcomes the gravity of the valve cap 3, the valve cap 3 is pushed to move upwards, and the medium is discharged; when the pressure of the medium in the container or the pipeline is lower than the set value, the valve clack 2 automatically returns to the seat under the action of the gravity of the valve cap 3. The set point of the medium pressure in the container or pipe can be set by increasing or decreasing the weight of the bonnet 3. The utility model discloses utilize valve cap 3's gravity to make valve clack 2 return the seat and close the valve, simple structure, it is with low costs, occupation space is little, convenience of customers installs and uses on low pressure pipeline under pressure equipment.

The inner wall lower extreme of valve cap 3 is equipped with draw-in groove 4, installs jump ring 5 in the draw-in groove 4, the outer wall of the upper end of disk seat 1 is equipped with spacing groove 6, and jump ring 5 is located spacing groove 6. The clamp spring 4 and the limiting groove 6 play a limiting role, so that the valve cap 3 is prevented from being separated from the valve seat 1 on one hand, and the maximum opening height of the valve cap 3 can be limited on the other hand.

The side wall of the bonnet 3 is provided with a discharge hole 7. When the pressure of the medium in the container or pipe is higher than the set value, the valve cap 3 is pushed to move upwards against the gravity of the valve cap 3, and the medium is discharged from the discharge hole 7.

The lower end of the valve seat 1 is provided with an external thread 8. When the valve seat is used, the valve seat 1 is directly screwed into a threaded hole on a container or a pipeline, and the installation is convenient.

Claims

1. The utility model provides a gravity type relief valve, includes disk seat (1) and valve clack (2), its characterized in that: valve cap (3) are installed to the upper end slide card of disk seat (1), valve cap (3) can be disk seat (1) relative freely move from top to bottom in certain extent, valve flap (2) are inlayed in valve cap (3), and valve flap (2) can be with the upper end laminating of disk seat (1) and seal.

2. A gravity operated safety valve according to claim 1 wherein: the inner wall lower extreme of valve cap (3) is equipped with draw-in groove (4), installs jump ring (5) in draw-in groove (4), the outer wall of the upper end of disk seat (1) is equipped with spacing groove (6), and jump ring (5) are located spacing groove (6).

3. A gravity operated safety valve according to claim 1 or claim 2 wherein: the side wall of the valve cap (3) is provided with a discharge hole (7).

4. A gravity operated safety valve according to claim 1 or claim 2 wherein: the lower end of the valve seat (1) is provided with an external thread (8).