CN219588251U

CN219588251U - Nested valve

Info

Publication number: CN219588251U
Application number: CN202223537225.XU
Authority: CN
Inventors: 李亚飞; 石凡; 彭亮; 李子岩; 韩秋艳; 傅光杰; 涂晓萍; 许欣悦; 信雨辰; 程舒婷; 徐雪峰; 蔡雨航
Original assignee: Ningbo University
Current assignee: Ningbo University
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-08-25
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a nested valve, comprising: the device comprises a pipe body, a first movable part, a second movable part, a secondary pushing part, a second movable part and a buffer structure; the two ends of the pipe body are open, and the inside of the pipe body is hollow; a first movable part and a second movable part are movably arranged in the pipe body; the first movable part and the second movable part are mutually independent; the head end of the first movable part is nested in the second movable part; the first movable part is connected with a secondary propelling part, and the secondary propelling part can push the second movable part to move after contacting with the second movable part; the inner wall of the pipe body close to the head end is connected with a buffer structure, so that the buffer structure plays a role in buffering the movement of the secondary movable part at a uniform speed; the valve can control the flow of the fluid to prevent the sudden injection of the fluid; so that the fluid can circulate smoothly.

Description

Nested valve

Technical Field

The utility model belongs to the technical field of control valves, and particularly relates to a nested valve.

Background

The valve is a device for controlling the direction, pressure, and flow rate of a fluid in a fluid system, and is a device for allowing or stopping the flow of a medium (liquid, gas, or powder) in a pipe or a device and controlling the flow rate. The valve is a control component in the pipeline fluid conveying system and is used for changing the section of the passage and the flow direction of the medium, and has the functions of diversion, cut-off, throttling, check, diversion or overflow pressure relief and the like. Valves for fluid control range from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, which are of a wide variety and specification. Can be used for controlling the flow of various types of fluids such as water, steam, oil products, gas, slurry, various corrosive media, liquid metal, radioactive fluid and the like.

At present, valve equipment used in the market only controls opening or closing of fluid, and cannot control the flow of the fluid, in the prior art, only one butterfly plate is arranged in the valve, if the fluid flowing in the valve is unstable in the control process, the valve cannot play a good throttling and splitting role, normal use is affected, unnecessary problems are caused, the difficulty of larger use is increased, and the use effect is reduced.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a nested valve which can control the flow of fluid and prevent the sudden injection of the fluid; the fluid is circulated smoothly;

in order to achieve the technical effects, the utility model is realized by the following technical scheme:

a nested valve comprising: the device comprises a pipe body, a first movable part, a second movable part, a secondary pushing part, a second movable part and a buffer structure;

the two ends of the pipe body are open, and the inside of the pipe body is hollow;

a first movable part and a second movable part are movably arranged in the pipe body; the first movable part and the second movable part are mutually independent; the head end of the first movable part is nested in the second movable part;

the first movable part is connected with a secondary propelling part, and the secondary propelling part can push the second movable part to move after contacting with the second movable part;

the inner wall of the pipe body close to the head end is connected with a buffer structure, so that the buffer structure plays a role in buffering the movement of the secondary movable part at a uniform speed;

preferably, the rear two thirds of the tube body is in a straight tubular structure, and the front one third of the tube body is in a horn-shaped structure; the straight cylindrical structure and the horn-shaped structure are integrally connected;

preferably, the first movable part comprises a push shaft and a flat cylinder integrally connected to the head end of the push shaft;

preferably, the secondary pushing component is a first baffle and a second baffle which are symmetrically connected to a pushing shaft of the first movable component;

preferably, the rear end of the pushing shaft is connected with a honeycomb plate, and a plurality of through holes are formed in the honeycomb plate; the purpose is to assist in controlling the flow;

preferably, the second movable part is divided into an upper block and a lower block, the upper block and the lower block are integrally formed, the whole is a flat cylinder with a hollow middle part, and the hollow middle part is just embedded into the flat cylinder at the head end of the first movable part;

preferably, the upper block and the lower block are connected to the rear side of the pipe body and are respectively provided with a first limiting block and a second limiting block;

preferably, the buffer structure is located on the front side of the second movable part; the buffer structure is composed of a first supporting plate and a second supporting plate which are symmetrically connected to the inner wall of the horn-shaped pipe body, and springs respectively connected to the first supporting plate and the second supporting plate.

The beneficial effects of the utility model are as follows:

the nested valve is divided into three stages of buffer stages in total, wherein the first buffer stage is that when a medium flows to a honeycomb plate, the medium flows to a pushing shaft through a through hole on the honeycomb plate, when the medium flowing to the pushing shaft is continuously increased, the medium is pushed to move towards the pushing shaft to reach the second stage due to pressure difference between the end face and the pushing shaft, the medium flow is continuously increased along with the time extension, and when the pushing shaft moves to a certain position, the first baffle and the second baffle can drive the upper block and the lower block to move until the spring is compressed to a certain degree and kept in a static state, and finally the third buffer stage is reached, so that the flow rate of the fluid medium can be gradually increased in stages, the situation that the flow rate of the medium reaches the maximum at the moment of opening the valve is avoided, and the service life of the valve is reduced. In addition, the device is provided with the spring in first backup pad and second backup pad department for the whole buffering process is all realized with the help of the pressure differential of fluid medium in pipeline both ends department is automatic when recovering to former initial state, need not to control with the help of external force input, and the device structural design is very reasonable, low in manufacturing cost, easy realization, control flow is simple.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic plan view of a first movable member and a secondary propulsion unit according to the present utility model;

FIG. 3 is a schematic perspective view of a first movable member and a secondary propulsion unit according to the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

1-tube body, 2-pushing shaft, 3-first baffle, 301-first contact surface, 4-second baffle, 401-second contact surface, 5-upper block, 6-lower block, 7-first support plate, 8-second support plate, 9-spring, 10-first limit block, 1001-first target surface, 11-second limit block, 1101-second target surface, 12-honeycomb plate and 1201-through hole.

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.

Example 1

A nested valve;

comprises a pipe body 1, wherein two ends of the pipe body 1 are open, and the inside is hollow;

the rear two thirds part of the pipe body 1 is in a straight cylindrical structure, and the front one third part is in a horn-shaped structure; the straight cylindrical structure and the horn-shaped structure are integrally connected; a pushing shaft 2 and a flat cylinder integrally formed and connected with the head end of the pushing shaft 2 are movably arranged in the pipe body 1;

the pushing shaft 2 is connected with a first baffle plate 3 and a second baffle plate 4;

the rear end of the pushing shaft 2 is connected with a honeycomb plate 12, and a plurality of through holes 1201 are formed in the honeycomb plate 12; the purpose is to assist in controlling the flow;

an upper block 5 and a lower block 6 can be movably arranged in the pipe body 1, the upper block 5 and the lower block 6 are integrally formed, the whole body is a flat cylinder with a hollow middle part, and the hollow middle part is just nested into the flat cylinder connected with the head end of the pushing shaft 2;

the rear sides of the upper block 5 and the lower block 6 are connected to the inner wall of the pipe body 1, and a first limiting block 10 and a second limiting block 11 are respectively arranged;

the front sides of the upper block 5 and the lower block 6 are provided with a first supporting plate 7 and a second supporting plate 8 which are symmetrically connected with the inner wall of the horn-shaped pipe body, and springs 9 which are respectively connected with the first supporting plate 7 and the second supporting plate 8.

When fluid flows to the valve body from the flowing direction, the valve body keeps static at the moment, the upper block 5 and the first limiting block 10 are clung together, the lower block 6 and the second limiting block 11 are clung together, the first limiting block 10 is fixed on the wall surface of the pipeline, the second limiting block 11 is fixed on the wall surface of the pipeline, the first supporting plate 7 and the second supporting plate 8 are fixed on the wall surface of the pipeline, the spring 9 on the first supporting plate 7 is static and the spring 9 on the second supporting plate 8 is static, and the pressures on the left side and the right side of the valve body are equal at the moment. When the fluid initially contacts the honeycomb plate 12 on the right side of the valve body, the fluid contacts the surface of the push shaft 2 through the through holes 1201 on the honeycomb plate 12, the fluid flow is not large, the fluid pressure on the surface of the push shaft 2 is small, the fluid pushes the push shaft 2 to slowly move to the end face side, the push shaft 2, the upper block 5 and the lower block 6 start to separate, the upper block 5 keeps a close contact state with the first limiting block 10, the lower block 6 keeps a close contact state with the second limiting block 11, the upper block 5 is static and motionless, the lower block 6 is static and motionless, the honeycomb plate 12 simultaneously moves to the end face along with the push shaft 2, the first supporting plate 7 and the second supporting plate 8 keep a static state in the process, the spring 9 does not receive the external force to keep the initial static state, and the fluid flow to the end face is small, so that the transition is gentle when the fluid flows through the valve body, and the phenomena such as fluid injection are avoided.

Example 2

A nested valve;

As the fluid flow increases gradually, the fluid pressure on the surface of the push shaft 2 starts to increase, so that the speed of the push shaft 2 moving towards the end surface starts to increase, until the push shaft 2 moves towards the end surface to a certain position, at this time, the first contact surface 301 of the first baffle 3 and the upper block 5 touches, the second contact surface 401 of the second baffle 4 and the lower block 6 touches, the first contact surface 301 of the upper block 5 and the first target surface of the first limiting block 10 start to separate, the second contact surface 401 of the lower block 6 and the second target surface of the second limiting block 11 start to separate, the first limiting block 10 remains stationary, the second limiting block 11 remains stationary, at this time, the incoming fluid is divided into two parts to the end surface, the first part is that the inflow fluid flows to the end face from the gap between the upper block 5 and the pipeline wall surface, the second part is that the inflow fluid flows to the end face from the gap between the lower block 6 and the pipeline wall surface, when the inflow fluid moves to a certain moment, the upper block 5 starts to touch the spring 9 on the first supporting plate 7, the lower block 6 starts to touch the spring 9 on the second supporting plate 8, at the moment, the spring 9 starts to be compressed, the spring 9 continues to be compressed along with the continuous increase of the flow, the compression state is kept unchanged until the spring 9 is compressed to a certain position, so that the flow of the fluid can be well controlled in the whole fluid flowing from the flowing direction to the end face, and the fluid injection cannot be caused. When the pressure of the liquid on the left side and the right side of the pushing shaft 2 tends to be stable, at the moment, the spring 9 starts to push the upper block 5, the lower block 6 and the valve body to rebound towards the fluid inflow direction, so that the valve body moves until the upper block 5 contacts with the first limiting block 10, the lower block 6 contacts with the second limiting block 11, and finally the valve body is restored to an initial state and enters the next circulation.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A nested valve, comprising: the device comprises a pipe body, a first movable part, a second movable part, a secondary pushing part and a buffer structure;

the pipe body is close to the inner wall of the head end and is connected with a buffer structure, so that the secondary movable part can be uniformly buffered.

2. The nested valve of claim 1, wherein the rear two-thirds of the tube body has a straight cylindrical configuration and the front one-third has a horn-like configuration; and the straight tubular structure is connected with the horn-shaped structure in an integrated manner.

3. The valve of claim 1, wherein the first movable member comprises a push shaft and a flat cylinder integrally formed with the push shaft at the head end.

4. The nested valve of claim 1, wherein the secondary urging member is a first baffle and a second baffle symmetrically connected to the urging shaft of the first movable member.

5. A nested valve according to claim 3, wherein the rear end of the push shaft is connected to a honeycomb plate, and the honeycomb plate is provided with a plurality of through holes; the purpose is to assist in controlling the flow.

6. The nested valve of claim 1, wherein the second movable member is divided into an upper block and a lower block, the upper block and the lower block are integrally formed, the whole is a flat cylinder with a hollow middle part, and the hollow middle part is just embedded into the flat cylinder at the head end of the first movable member.

7. The nested valve of claim 6, wherein the upper block and the lower block are disposed at the rear side and connected to the inner wall of the tube body, and the first stopper and the second stopper are disposed at the rear side and connected to the inner wall of the tube body, respectively.

8. The nested valve of claim 6, wherein the buffer structure is located on a front side of the second movable member; the buffer structure is composed of a first supporting plate and a second supporting plate which are symmetrically connected to the inner wall of the horn-shaped pipe body, and springs respectively connected to the first supporting plate and the second supporting plate.