CN111637247A

CN111637247A - Floating ball valve capable of releasing pressure

Info

Publication number: CN111637247A
Application number: CN201910156670.5A
Authority: CN
Inventors: 章文忠
Original assignee: Hubei Taihe Petrochemical Equipment Co ltd
Current assignee: Hubei Taihe Petrochemical Equipment Co ltd
Priority date: 2019-03-01
Filing date: 2019-03-01
Publication date: 2020-09-08

Abstract

The utility model provides a but floating ball valve of decompression, includes the valve body, is equipped with spheroid and disk seat in the valve body, both ends about the spheroid are located to the disk seat, spheroidal upper end is equipped with the valve rod, valve rod and spheroid rotate with the valve body and be connected, the valve body includes into water end and play water end, fixedly connected with overflow pipe on the lateral wall of valve body end of intaking is equipped with overflow arrangement in the overflow pipe. The invention provides a floating ball valve capable of relieving pressure, which is provided with an overflow pipe and an overflow device, wherein when the pressure of liquid in the valve is greater than the pressing force of a compression spring, the liquid jacks up a sealing plate to enable the liquid to flow into the overflow pipe for pressure relief treatment.

Description

Floating ball valve capable of releasing pressure

Technical Field

The invention relates to a valve, in particular to a floating ball valve capable of relieving pressure.

Background

The floating ball valve has small volume, light weight and simple structure, and the ball body has a free floating function and can better ensure sealing; the ball valve uses a ball body with a circular through hole as an opening and closing part, and the ball body rotates by 0-90 degrees around the center of a valve rod under the driving of the valve rod to complete the opening and closing functions; the valve has the characteristics of compact structure and rapid opening and closing, and can be closed and cut off the pipeline medium by rotating 90 degrees; the diameter of the spherical channel is the same as that of the pipeline, so that the flow resistance is small and the circulation capacity is high; the valve rod is of a lower-mounted type, so that the accident that the valve rod penetrates out is avoided, and the use safety is ensured. However, the floating ball valve cannot bear large pressure due to the structural characteristics, and when the pressure of liquid in the valve is large, the ball body is easy to deviate and even be damaged.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a pressure-relief floating ball valve, which can discharge liquid when the pressure of the liquid in the valve is higher

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a but floating ball valve of decompression, includes the valve body, is equipped with spheroid and disk seat in the valve body, both ends about the spheroid are located to the disk seat, spheroidal upper end is equipped with the valve rod, valve rod and spheroid rotate with the valve body and be connected, the valve body includes into water end and play water end, fixedly connected with overflow pipe on the lateral wall of valve body end of intaking is equipped with overflow arrangement in the overflow pipe.

Preferably, the overflow device is arranged at the lower end of the overflow pipe and comprises an upper annular limit stop and a lower annular limit stop, a sealing plate is arranged on the upper annular limit stop and the lower annular limit stop, a compression spring is arranged between the sealing plate and the upper annular limit stop, and an opening is formed in the upper end of the overflow pipe.

Preferably, a floating plate which goes up and down along with the liquid level is arranged above the upper annular limiting stop, and the floating plate is provided with an identification rod.

Preferably, the upper surface of the floating plate and the lower surface of the sealing plate are both provided with rubber coatings.

Preferably, the side wall of the overflow pipe is further connected with a liquid discharge pipe, and the output end of the liquid discharge pipe is in threaded connection with a sealing pipe cap.

The invention provides a floating ball valve capable of relieving pressure, which is provided with an overflow pipe and an overflow device, wherein when the pressure of liquid in the valve is greater than the pressing force of a compression spring, the liquid jacks up a sealing plate to enable the liquid to flow into the overflow pipe for pressure relief treatment.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the structure of the overflow tube of the present invention.

Detailed Description

As shown in fig. 1, a floating ball valve capable of releasing pressure comprises a valve body 1, wherein a ball body 2 and a valve seat 3 are arranged in the valve body 1, the valve seat 3 is arranged at the left end and the right end of the ball body 1, a valve rod 4 is arranged at the upper end of the ball body 2, the valve rod 4 and the ball body 2 are rotatably connected with the valve body 1, the valve body 1 comprises a water inlet end and a water outlet end, an overflow pipe 5 is fixedly connected to the side wall of the water inlet end of the valve body 1, and an overflow device is arranged in the overflow pipe 5.

Preferably, as shown in fig. 2, the overflow device is disposed at the lower end of the overflow pipe 5, and includes an upper annular limit stop 6 and a lower annular limit stop 7, a sealing plate 8 is disposed between the upper annular limit stop 6 and the lower annular limit stop 7, a compression spring 9 is disposed between the sealing plate 8 and the upper annular limit stop 6, and an opening is disposed at the upper end of the overflow pipe 5. When the liquid pressure in the valve body is greater than the downward acting force of the compression spring on the sealing plate, the sealing plate moves upwards, and the liquid flows into the overflow pipe to play a role in pressure relief.

Preferably, a floating plate 10 which goes up and down along with the liquid level is arranged above the upper annular limiting stop 6, and the floating plate 10 is provided with an identification rod 11. More and more back kickboards 10 can be along with the liquid level ascendant when the liquid in the overflow pipe, and when the holy work upper end, the upper end of overflow pipe 5 is worn out from to sign pole 11, plays the suggestion effect to the staff, and hydraulic pressure is too high in the suggestion valve, and when kickboards 10 rose to the top of overflow pipe 5, kickboards 10 played sealed effect to the opening and made liquid can not spill over from the top.

Preferably, the upper surface of the floating plate 10 and the lower surface of the sealing plate 8 are both provided with rubber coatings 12.

Preferably, a liquid discharge pipe 13 is further connected to the side wall of the overflow pipe 5, and a sealing pipe cap 14 is screwed to the output end of the liquid discharge pipe 13. When the staff observes that the marking rod rises, the sealing pipe cap 14 can be opened to drain liquid and reduce pressure.

When the pressure relief valve is used, whether the pressure in the valve is over-pressure or not can be judged only by observing the rising condition of the floating plate 10, and the pressure relief operation can be conveniently carried out.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. The utility model provides a but floating ball valve of decompression, includes valve body (1), is equipped with spheroid (2) and disk seat (3) in valve body (1), both ends about spheroid (1) are located in disk seat (3), the upper end of spheroid (2) is equipped with valve rod (4), valve rod (4) and spheroid (2) are connected its characterized in that with valve body (1) rotation: the water inlet valve is characterized in that the valve body (1) comprises a water inlet end and a water outlet end, an overflow pipe (5) is fixedly connected to the side wall of the water inlet end of the valve body (1), and an overflow device is arranged in the overflow pipe (5).

2. The floating ball valve of claim 1, wherein: the overflow device is arranged at the lower end of the overflow pipe (5) and comprises an upper annular limiting stop (6) and a lower annular limiting stop (7), a sealing plate (8) is arranged on the upper annular limiting stop (6) and the lower annular limiting stop (7), a compression spring (9) is arranged between the sealing plate (8) and the upper annular limiting stop (6), and an opening is formed in the upper end of the overflow pipe (5).

3. A depressible floating ball valve according to claim 2, wherein: a floating plate (10) which goes up and down along with the liquid level is arranged above the upper annular limiting stop dog (6), and an identification rod (11) is arranged on the floating plate (10).

4. A depressible floating ball valve according to claim 3, wherein: the upper surface of the floating plate (10) and the lower surface of the sealing plate (8) are both provided with rubber coatings (12).

5. A depressurisable floating ball valve according to claim 3 or 4, wherein: the side wall of the overflow pipe (5) is also connected with a liquid discharge pipe (13), and the output end of the liquid discharge pipe (13) is in threaded connection with a sealing pipe cap (14).