CN219345607U

CN219345607U - Flow safety valve

Info

Publication number: CN219345607U
Application number: CN202320434664.3U
Authority: CN
Inventors: 侯胜君; 陈立忠
Original assignee: Jingjiang New Century Hydraulic Parts Manufacturing Co ltd
Current assignee: Jingjiang New Century Hydraulic Parts Manufacturing Co ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-07-14
Anticipated expiration: 2033-03-09

Abstract

The utility model discloses a flow safety valve, which belongs to the technical field of safety valves and aims at solving the problem that the existing flow safety valve is easy to incline due to ageing deformation or unstable water pressure.

Description

Flow safety valve

Technical Field

The utility model relates to the technical field of safety valves, in particular to a flow safety valve.

Background

The safety valve is called as a pressure relief valve, is automatically opened and closed according to the working pressure of the pressure system, and is generally arranged on equipment or a pipeline of a closed system to protect the safety of the system. When the pressure in the equipment or the pipeline exceeds the set pressure of the safety valve, automatically opening the pressure relief, ensuring that the medium pressure in the equipment and the pipeline is under the set pressure, protecting the equipment and the pipeline from working normally, preventing accidents and reducing loss;

however, when the internal pressure of the flow safety valve is too large to lift the diaphragm upwards and the pressure is recovered to be normal, the diaphragm may age and deform or the water pressure is unstable to cause inclination, and effective sealing cannot be formed after the inclination, so that leakage is caused;

for this we propose a flow relief valve.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the flow safety valve, overcomes the defects of the prior art, and aims to solve the problems that the existing flow safety valve is aged and deformed or the water pressure is unstable and is easy to incline.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the flow safety valve comprises a lower valve body and an upper valve body which is fixed with the lower valve body through bolts, wherein a diaphragm is fixedly arranged on the inner side of the bottom of the lower valve body through a supporting disc, a spring is clamped between the upper valve body and the supporting disc, and an adjusting screw is movably arranged at the end part of the upper valve body;

the inner parts of two sides of the upper valve body are respectively provided with a sealing cavity, the inner sides of the end parts of the sealing cavities are movably connected with rotating rods, telescopic rods are sleeved through the rotating rods, connecting rings are fixedly installed through the two telescopic rods, and top blocks are arranged around the bottoms of the connecting rings;

as a preferable technical scheme of the utility model, a sealing ring is arranged on the inner side pad of the end part of the sealing cavity;

through adopting above-mentioned technical scheme, prevent the pressure release in-process, gaseous or liquid medium is leaked outside the valve body through the seal chamber.

As a preferable technical scheme of the utility model, the surface of the rotating rod is provided with threads, and the inner wall of the telescopic rod is provided with a thread groove corresponding to the threads on the surface of the telescopic rod;

one end of the two rotating rods, which is positioned outside the upper valve body, is sleeved with a synchronous pulley, and a synchronous belt is wound by the synchronous pulley;

through adopting above-mentioned technical scheme, this makes the rotation bull stick can drive two threaded connection's telescopic link through the hold-in range synchronization and carry out synchronous flexible.

As a preferable technical scheme of the utility model, the top of the lower valve body is provided with a pressure relief opening, and the bottom of the diaphragm is abutted against the pressure relief opening;

by adopting the technical scheme, the diaphragm is forced to seal the pressure relief opening by the force of the spring.

The utility model has the beneficial effects that: when the diaphragm is inclined due to ageing deformation or unstable water pressure, the upper valve body is not required to be opened, the telescopic rods which are in threaded connection with the upper valve body can be driven to drive the connecting rings to sink only by rotating the rotating rods, and then the top blocks at the bottom of the connecting rings are pushed to be fully contacted with the top of the diaphragm, so that the top of the diaphragm is flat, and the practicability is high.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

fig. 3 is a schematic view of a partial cross-sectional structure of the present utility model.

In the figure: 1. a lower valve body; 2. an upper valve body; 3. adjusting a screw; 4. a spring; 5. a support plate; 6. a diaphragm sheet; 7. sealing the cavity; 8. a rotating rod; 9. a telescopic rod; 10. a connecting ring; 11. a top block; 12. a synchronous belt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present embodiment

Referring to fig. 1-3, the flow safety valve comprises a lower valve body 1 and an upper valve body 2 which is fixed with the lower valve body 1 by bolts, wherein a diaphragm 6 is fixedly arranged on the inner side of the bottom of the lower valve body 1 through a supporting disc 5, a spring 4 is clamped between the upper valve body 2 and the supporting disc 5, and an adjusting screw 3 is movably arranged at the end part of the upper valve body 2;

the inner parts of two sides of the upper valve body 2 are respectively provided with a sealing cavity 7, the inner sides of the end parts of the sealing cavities 7 are movably connected with rotating rods 8, telescopic rods 9 are sleeved through the rotating rods 8, connecting rings 10 are fixedly installed through the two telescopic rods 9, and top blocks 11 are respectively arranged around the bottoms of the connecting rings 10;

in the embodiment, a sealing ring is arranged on the inner side of the end part of the sealing cavity 7 to prevent gas or liquid medium from leaking to the outside of the valve body through the sealing cavity 7 in the pressure relief process;

further, the surface of the rotating rod 8 is provided with threads, the inner wall of the telescopic rod 9 is provided with a thread groove corresponding to the threads on the surface, one end of the two rotating rods 8, which is positioned outside the upper valve body 2, is sleeved with a synchronous pulley, and a synchronous belt 12 is wound around the synchronous pulley, so that the rotating rod 8 can synchronously drive the telescopic rod 9 connected with the two threads to synchronously stretch and retract through the synchronous belt 12;

it is noted that the top of the lower valve body 1 is provided with a pressure relief opening, the bottom of the diaphragm 6 is abutted against the pressure relief opening, and the pressure relief opening is sealed by pushing the diaphragm 6 through the force of the spring 4.

Working principle: when diaphragm 6 is because ageing deformation or water pressure unstability cause the slope, need not to open upper valve body 2, only need rotate bull stick 8 can drive two and its threaded connection's telescopic link 9 drive go-between 10 subsidence, and then promote the kicking block 11 of its bottom and the top of diaphragm 6 fully contact, and then with diaphragm 6 top level and smooth, the practicality is strong.

Finally, it should be noted that: in the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The flow safety valve comprises a lower valve body (1) and an upper valve body (2) which is fixed with the lower valve body (1) through bolts, and is characterized in that a diaphragm (6) is fixedly arranged on the inner side of the bottom of the lower valve body (1) through a supporting disc (5), a spring (4) is clamped between the upper valve body (2) and the supporting disc (5), and an adjusting screw (3) is movably arranged at the end part of the upper valve body (2);

the sealing device is characterized in that sealing cavities (7) are formed in two sides of the upper valve body (2), rotating rods (8) are movably connected to the inner sides of the end parts of the sealing cavities (7), telescopic rods (9) are sleeved on the rotating rods (8), connecting rings (10) are fixedly mounted on the two telescopic rods (9), and ejector blocks (11) are arranged around the bottoms of the connecting rings (10).

2. Flow safety valve according to claim 1, characterized in that the inner gasket of the end of the sealing chamber (7) is provided with a sealing ring.

3. Flow safety valve according to claim 1, characterized in that the surface of the turning rod (8) is provided with threads, and the inner wall of the telescopic rod (9) is provided with thread grooves corresponding to the threads on the surface thereof.

4. Flow safety valve according to claim 1, characterized in that the two swivel rods (8) are provided at one end of the outer part of the upper valve body (2) with a synchronous pulley and are wound with a synchronous belt (12) via the synchronous pulley.

5. Flow safety valve according to claim 1, characterized in that the top of the lower valve body (1) is provided with a pressure relief opening, the bottom of the diaphragm (6) being in abutment with the pressure relief opening.