CN213655820U

CN213655820U - Silencing check valve body

Info

Publication number: CN213655820U
Application number: CN202021851260.7U
Authority: CN
Inventors: 张建方
Original assignee: Suzhou Shenda Valve Co ltd
Current assignee: Suzhou Shenda Valve Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-07-09
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses an amortization check valve body, including the check valve casing, the first flange of check valve casing one end fixedly connected with, the check valve casing is close to first flange department and forms the storehouse of intaking, first flange fixedly connected with second flange is kept away from to the check valve casing, the check valve casing is close to second flange department and forms a sump, go out the sump and intake and form the working bin between the storehouse. The utility model discloses a storehouse of intaking and go out the sump and be the upper and lower structural formula, the medium gets into storehouse pressure of intaking and impels the case to rise for the medium flows out from a sump, during closed stagnant water valve, the stop pump body promptly, the medium of backward flow drives and promotes the case and close, case and working gasket laminate promptly, when the stagnant water valve was opened, there was the spring to carry out the shock attenuation, thereby reach the effect of amortization, the stagnant water valve was closed, the case was laminated with working gasket, reduce the collision, thereby hoisting device's life.

Description

Silencing check valve body

Technical Field

The utility model relates to a check valve field especially relates to an amortization check valve body.

Background

Check valves are one of many plumbing valves that are widely used to control the one-way flow of a liquid medium in a pipe. In the nuclear reaction, the check valve can be used for executing system safety functions in a main loop and an auxiliary system pipeline of a million-kilowatt pressurized water reactor nuclear power station, so that the normal operation of a pipeline system is ensured, and the accident consequence is relieved; the prototype passes thermal state life, thermal cycle, reverse reflux and end loading test tests of 2000 times comprehensively and can meet various functional requirements under the operating condition. The traditional check valve is generally designed by adopting a through-flow structure and is usually arranged at a medium outlet of a pump body to prevent medium from flowing backwards to cause damage to the pump body, namely, the traditional check valve is automatically opened by the flowing of the medium and has the characteristics of small opening pressure, sensitive opening and closing and the like.

However, in the prior art, when the valve is opened and closed, the water stop valve generates a loud sound due to collision, and reducing the collision is a key for silencing and is the most effective method for protecting the water stop valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a silencing check valve body.

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

a silencing check valve body comprises a check valve shell, wherein one end of the check valve shell is fixedly connected with a first connecting flange, a water inlet bin is formed at the position, close to the first connecting flange, of the check valve shell, a second connecting flange is fixedly connected to the position, far away from the first connecting flange, of the check valve shell, a water outlet bin is formed at the position, close to the second connecting flange, of the check valve shell, a working bin is formed between the water outlet bin and the water inlet bin, the check valve shell is located at the top of the working bin and is arranged in a penetrating mode, and mounting seats are arranged at the positions of the working bin and the;

the top of the check valve shell is provided with a top cover, the top in the top cover is provided with a sliding bin, the top cover is provided with a fastening bin at the bottom of the sliding bin, the fastening bin is in threaded connection with a fixed seat, the fixed seat is in sliding connection with a valve core, the top in the top cover is provided with a spring, and the sliding bin is in sliding connection with the valve core;

the check valve shell is connected with the top cover through a sealing device.

As a further description of the above technical solution:

the working bin is positioned at the top of the water inlet bin, and the water outlet bin is positioned on the side wall of the working bin.

As a further description of the above technical solution:

the mounting seat is clamped and connected with a working gasket.

As a further description of the above technical solution:

the sealing device comprises a bolt and a waterproof gasket, the check valve shell is located at the top of the working bin and is provided with a threaded groove, the side wall of the top cover is provided with a through hole matched with the threaded groove, the waterproof gasket is located between the check valve shell and the top cover, and the check valve shell and the top cover are fixed through the bolt.

As a further description of the above technical solution:

the bolt and the top cover are arranged in an embedded mode.

As a further description of the above technical solution:

the valve core is matched with the working gasket in position.

As a further description of the above technical solution:

the spring is in a compressed arrangement.

The utility model discloses following beneficial effect has:

1. the utility model discloses a storehouse of intaking and go out the sump and be the upper and lower structural formula, the medium gets into storehouse pressure of intaking and impels the case to rise for the medium flows out from a sump, during closed stagnant water valve, the stop pump body promptly, the medium of backward flow drives and promotes the case and close, case and working gasket laminate promptly, when the stagnant water valve was opened, there was the spring to carry out the shock attenuation, thereby reach the effect of amortization, the stagnant water valve was closed, the case was laminated with working gasket, reduce the collision, thereby hoisting device's life.

2. The utility model discloses also solved the problem that the slower case of medium backward flow can't be closed simultaneously, if the medium backward flow is slower, the pump body stop work this moment, the spring initiative impels the case to carry out the closure, plays and adjusts closed effect to make the stagnant water valve carry out closed task.

Drawings

Fig. 1 is a schematic view of an operation structure of a valve body of a noise reduction check valve according to the present invention;

fig. 2 is a schematic structural view of a water stop valve housing of a valve body of the sound-damping check valve according to the present invention;

fig. 3 is the utility model provides a amortization check valve body top cap and case structure sketch map.

Illustration of the drawings:

1. a check valve housing; 11. a first connecting flange; 12. a water inlet bin; 13. a second connecting flange; 14. a water outlet bin; 15. a working bin; 16. a working pad; 2. a valve core; 21. a spring; 3. a top cover; 31. a sliding bin; 32. fastening the bin; 33. a waterproof gasket; 34. a fixed seat; 35. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment:

a silencing check valve body comprises a check valve shell 1, wherein one end of the check valve shell 1 is fixedly connected with a first connecting flange 11, the first connecting flange 11 is used for being connected with a conveying pipeline, a water inlet bin 12 is formed at the position, close to the first connecting flange 11, of the check valve shell 1, a second connecting flange 13 is fixedly connected with the position, far away from the first connecting flange 11, of the check valve shell 1, the second connecting flange 13 is connected with a water outlet conveying pipeline, a water outlet bin 14 is formed at the position, close to the second connecting flange 13, of the check valve shell 1, a working bin 15 is formed between the water outlet bin 14 and the water inlet bin 12, the check valve shell 1 is positioned at the top of the working bin 15 in a penetrating mode, mounting seats are arranged at the positions of the working bin 15 and the water inlet bin 12, the water inlet bin 12 and the water outlet bin 14 are of a vertical structure, a valve core 2 is pushed to ascend by medium, when the water stop valve is closed, the pump body is stopped, the backflow medium drives the push valve core 2 to be closed, namely the valve core 2 is attached to the working gasket 16, when the water stop valve is opened, the spring 21 is used for damping, so that the silencing effect is achieved, when the water stop valve is closed, the valve core 2 is attached to the working gasket 16, collision is reduced, and the service life of the device is prolonged;

the top of the check valve shell 1 is provided with a top cover 3, the top inside the top cover 3 is provided with a sliding bin 31, the top cover 3 is positioned at the bottom of the sliding bin 31 and is provided with a fastening bin 32, the fastening bin 32 is in threaded connection with a fixed seat 34, the fixed seat 34 is in sliding connection with the valve core 2, the top inside the top cover 3 is provided with a spring 21, the sliding bin 31 is in sliding connection with the valve core 2, if the valve core 2 cannot be closed, the spring 21 actively pushes the valve core 2 to be closed, the effect of adjusting the closing is achieved, and; the check valve housing 1 and the top cover 3 are connected by a closing means.

The working bin 15 is positioned at the top of the water inlet bin 12, the water outlet bin 14 is positioned on the side wall of the working bin 15, and the position relation of the working bin 15, the water inlet bin 12 and the water outlet bin 14 is determined.

The mounting seat is clamped and connected with a working gasket 16, the clamping and connection of the working gasket 16 are easy to replace, and if large noise exists in the process of closing the water stop valve, the working gasket 16 is replaced.

The sealing device comprises a bolt 35 and a waterproof gasket 33, the check valve shell 1 is located at the top of the working bin 15 and is provided with a thread groove, the side wall of the top cover 3 is provided with a through hole matched with the thread groove, the waterproof gasket 33 is located between the check valve shell 1 and the top cover 3, the check valve shell 1 and the top cover 3 are fixed through the bolt 35, and the sealing device is simple in structure and easy to install.

The bolt 35 is embedded with the top cap 3 and sets up, the bolt 35 of embedded setting, the security of protection device operation.

The valve core 2 is matched with the working gasket 16 in position, and the working position relation of the valve core 2 and the working gasket 16 is determined.

The spring 21 is in a compression arrangement, the pressure of the water inlet medium is lower than the return pressure of the water outlet bin 14, namely the valve core 2 is automatically closed through the spring 21, and the safe operation of the device is ensured.

The first embodiment is as follows: the medium gets into and advances 12 medium pressure push valve core 2 rises in the storehouse for the medium flows out from a water storehouse 14, when closed stagnant water valve, at first stops the pump body, and the medium of backward flow drives and pushes away valve core 2 and closes, and case 2 laminates with work gasket 16 promptly, accomplishes closed task, and when the stagnant water valve was opened, there was spring 21 to carry out the shock attenuation, thereby reaches the effect of amortization, and the stagnant water valve is closed, and case 2 laminates with work gasket 16, reduces the collision, thereby hoisting device's life.

Example two: the medium pressure that the medium got into storehouse 12 pushes away case 2 and rises for the medium flows out from a storehouse 14, if the medium backward flow is slower, the pump body stopped work this moment, and the medium pressure of intaking is less than a storehouse 14 backward flow pressure that goes out, and case 2 promotes self-closing through spring 21 elasticity promptly, plays and adjusts closed effect, thereby makes the stagnant water valve carry out the closure task.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. An amortization check valve body, includes check valve casing (1), its characterized in that: one end of the check valve shell (1) is fixedly connected with a first connecting flange (11), a water inlet bin (12) is formed at the position, close to the first connecting flange (11), of the check valve shell (1), a second connecting flange (13) is fixedly connected to the position, far away from the first connecting flange (11), of the check valve shell (1), a water outlet bin (14) is formed at the position, close to the second connecting flange (13), of the check valve shell (1), a working bin (15) is formed between the water outlet bin (14) and the water inlet bin (12), the check valve shell (1) is located at the top of the working bin (15) and is arranged in a penetrating mode, and mounting seats are arranged at the positions of the working bin (15) and the water inlet bin (12);

the top of the check valve shell (1) is provided with a top cover (3), the top in the top cover (3) is provided with a sliding bin (31), the top cover (3) is positioned at the bottom of the sliding bin (31) and is provided with a fastening bin (32), the fastening bin (32) is in threaded connection with a fixed seat (34), the fixed seat (34) is in sliding connection with a valve core (2), the top in the top cover (3) is provided with a spring (21), and the sliding bin (31) is in sliding connection with the valve core (2);

the check valve shell (1) is connected with the top cover (3) through a sealing device.

2. The noise dampening check valve body of claim 1, wherein: the working bin (15) is positioned at the top of the water inlet bin (12), and the water outlet bin (14) is positioned on the side wall of the working bin (15).

3. The noise dampening check valve body of claim 1, wherein: the mounting seat is clamped and connected with a working gasket (16).

4. The noise dampening check valve body of claim 1, wherein: the sealing device comprises a bolt (35) and a waterproof gasket (33), wherein the check valve shell (1) is located at the top of the working bin (15) and is provided with a threaded groove, the side wall of the top cover (3) is provided with a through hole matched with the threaded groove, the waterproof gasket (33) is located between the check valve shell (1) and the top cover (3), and the check valve shell (1) and the top cover (3) are fixed through the bolt (35).

5. The noise dampening check valve body of claim 4, wherein: the bolt (35) and the top cover (3) are arranged in an embedded mode.

6. The noise dampening check valve body of claim 1, wherein: the valve core (2) is matched with the working gasket (16) in position.

7. The noise dampening check valve body of claim 1, wherein: the spring (21) is arranged in a compressed manner.