CN210318643U

CN210318643U - Buffering shuttle valve

Info

Publication number: CN210318643U
Application number: CN201921449173.6U
Authority: CN
Inventors: 薛振宇; 罗国俊
Original assignee: Luo En Grinding Technology Suzhou Co ltd
Current assignee: Luo En Grinding Technology Suzhou Co ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-04-14
Anticipated expiration: 2029-09-03

Abstract

The utility model relates to a buffering shuttle valve, include: a valve body and a valve core; a first inlet and a second inlet are respectively arranged at two ends of the valve body, and a first outlet is arranged in the middle of the valve body; the valve core comprises a sealing part, buffering parts are arranged at two ends of the sealing part along the extension direction of the valve body, the buffering parts are conical bodies with diameters gradually reduced towards the outer ends, and buffering grooves matched with the buffering parts are arranged at two ends of an inner cavity of the valve body. This buffering shuttle valve, when the conical body of case tip removed the dashpot in, along with buffer portion gets into the dashpot, the clearance between buffer portion and the dashpot is littleer and littleer, the anterior fluid of buffer portion direction of motion can be bigger and bigger to the resistance that the opposite direction of motion flows, thereby play the cushioning effect to the case, greatly reduced the relative velocity when the tip contacts in case and the valve body, and then greatly reduced the noise that case striking valve body inner chamber tip produced, the life of this shuttle valve has been prolonged.

Description

Buffering shuttle valve

Technical Field

The utility model relates to a valving field especially relates to a buffering shuttle valve.

Background

With the rapid development of the manufacturing technology of industrial equipment, various new process flows are continuously developed, the application performance of valve products is required to be higher in the fields of textile, chemical engineering, medical treatment, food, refrigeration, industrial manufacturing and the like and international connection, various common stop valves are prolonged for decades, and the requirement of realizing centralized control of equipment pipelines in the current social production cannot be met.

In the conventional valve, if two pipelines need to enter one pipeline and one pipeline needs to exit, the pipelines or the valves need to be added for realizing the operation, and the operation wastes time and labor and wastes materials. Therefore, the shuttle valve is designed, is equivalent to two one-way valves, can realize that two pipelines enter one pipeline and exit, and one pipeline with large page entering liquid pressure is communicated with a liquid outlet pipeline.

However, when the valve core of the existing shuttle valve works, the valve core of the existing shuttle valve is in violent impact with two ends of the valve body due to high pressure when a pipeline is switched every time, so that high noise is generated, and the service life of the shuttle valve is short.

SUMMERY OF THE UTILITY MODEL

Utility model for solving current shuttle valve case striking valve body both ends and producing great noise, still can lead to the problem that shuttle valve life is short, the technical scheme who adopts is: a snubbing shuttle valve comprising: the valve comprises a valve body and a valve core arranged in the valve body;

a first inlet and a second inlet are respectively arranged at two ends of the valve body, and a first outlet is arranged in the middle of the valve body;

the valve core comprises a sealing part, buffering parts are arranged at two ends of the sealing part along the extending direction of the valve body, the sealing part can seal the first outlet, the buffering parts are conical bodies with diameters gradually reduced towards the outer ends, and buffering grooves matched with the buffering parts are arranged at two ends of an inner cavity of the valve body.

The further improvement is that the sealing part is in clearance fit with the inner cavity of the valve body.

The improved structure is characterized in that the buffer groove is a cylindrical groove facing the opening of the buffer part, and the maximum diameter of the buffer part is not larger than the diameter of the buffer groove.

In a further improvement, the length from the minimum diameter to the maximum diameter of the outermost edge of the buffer cone is not greater than the depth of the buffer groove in the extending direction of the valve body.

The beneficial effects of utility model are that:

the utility model provides a buffering shuttle valve, the buffer portion at case both ends is the cone, when the cone of case tip removed the dashpot in, along with buffer portion gets into the dashpot, clearance between buffer portion and the dashpot is littleer and more little, the anterior fluid of buffer portion direction of motion can be bigger and bigger to the resistance that the opposite direction of motion flows, thereby play the cushioning effect to the case, greatly reduced the relative velocity when tip contacts in case and the valve body, and then greatly reduced the noise that case striking valve body inner chamber tip produced, the life of this shuttle valve has been prolonged.

Drawings

The following further describes the present invention with reference to the drawings and examples.

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

FIG. 2 is a schematic structural view of the buffering shuttle valve of the present invention;

FIG. 3 is a schematic structural view of the buffering shuttle valve of the present invention;

fig. 4 is a schematic view of the valve core structure of the present invention.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic manner, and therefore show only the components relevant to the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, 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 utility model can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 3, the utility model provides a buffering shuttle valve, include: the valve comprises a valve body and a valve core 2 arranged in an inner cavity 14 of the valve body 1; the valve core 2 can slide back and forth in the inner cavity of the valve body 1.

A first inlet 11 and a second inlet 12 which are communicated with an inner cavity of the valve body 1 are respectively arranged at two ends of the valve body 1, and a first outlet 13 which is communicated with an inner cavity 14 of the valve 1 is arranged in the middle of the valve body 11;

as shown in fig. 4, the valve core 2 includes a sealing portion 21, two ends of the sealing portion 21 along the extending direction of the valve body 1 are respectively provided with a buffer portion 22, an area of the sealing portion 21 contacting with the first outlet 13 when the valve core 2 slides in the inner cavity 14 of the valve body 1 and passes through the first outlet 13 is larger than an area of the first outlet 13, that is, the sealing portion 21 can completely seal the first outlet 13 when moving to a position corresponding to the first outlet 13, the buffer portion 22 is a conical body with a gradually decreasing diameter toward the outer end, and two ends of the inner cavity 14 of the valve body 1 are provided with buffer grooves 141 matching with the buffer portions 22.

When the cushion valve is used, as shown in fig. 1, when the valve core 2 is at the middle position of the valve body 1, the sealing part 21 seals the first outlet 13; as shown in fig. 2, when the pressure of the inflow (liquid or abrasive, etc.) from the first inlet 11 into the cavity 14 of the valve body 1 is greater than the pressure of the inflow from the second inlet 12 into the cavity 14 of the valve body 1, the valve core 2 is pushed toward the second inlet 12, so that the first inlet 11 is communicated with the first outlet 13; as shown in fig. 3, when the inflow pressure of the second inlet 12 into the inner cavity 14 is greater than the inflow pressure of the first inlet 11 into the inner cavity 14, the valve body 2 is pushed toward the first inlet 11, so that the second inlet 12 is communicated with the first outlet 13.

This buffering shuttle valve, the buffer portion at case both ends is the cone, when the cone of case tip removed the dashpot in, along with buffer portion gets into the dashpot, the clearance between buffer portion and the dashpot is littleer and littleer, the anterior fluid of buffer portion direction of motion can be bigger and bigger to the resistance that the opposite direction of motion flows, thereby play the cushioning effect to the case, greatly reduced the relative velocity when tip contact in case and the valve body, and then greatly reduced the noise that case striking valve body inner chamber tip produced, the life of this shuttle valve has been prolonged.

The further improvement is that the sealing part 21 is in clearance fit with the inner cavity 14 of the valve body 1, so that the sealing part 21 can slide in the inner cavity 14 smoothly and reciprocally, the purpose of separating the inner cavities 14 at two ends of the sealing part 21 can be achieved, and meanwhile, the clearance between the sealing part 21 and the inner cavity 14 can be adjusted adaptively according to different inflows in actual use.

In a further improvement, the buffer groove 141 is a cylindrical groove that faces the opening of the buffer part 22, the diameter of the cylindrical groove is uniform from the opening to the bottom of the valve body in the extending direction, and the maximum diameter of the buffer part 22 is not larger than the diameter of the buffer groove 141. In order to achieve the maximum buffering effect on the valve core, in this embodiment, the maximum diameter B of the conical body of the buffering portion 22 is in interference fit with the buffering groove 141.

It is further improved that the length from the minimum diameter a to the maximum diameter B of the outermost edge of the tapered body of the relief portion 22 is not more than the depth of the relief groove 141 in the extending direction of the valve body 1. If the length of the tapered body of the buffer portion 22 is too long, when the outer end of the buffer portion hits the bottom of the buffer groove 141 in the extending direction of the valve body, the gap between the buffer grooves 141 at the port is too large, and then when the buffer portion hits the buffer groove, the liquid between the buffer portion and the buffer groove flows into too large, and the buffer effect on the valve element is weakened.

Meanwhile, in the present embodiment, when the valve body 2 moves to one end of the inner cavity 14, part or all of the first inlet 11 or the second inlet 12 is located between the outermost end and the innermost end of the buffer portion 22.

In light of the foregoing description of the preferred embodiments of the present invention, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A snubbing shuttle valve, comprising: the valve comprises a valve body and a valve core arranged in the valve body;

2. The snubbing shuttle valve of claim 1, wherein the seal is a clearance fit with the valve body interior cavity.

3. The snubbing shuttle valve of claim 1 wherein the snubbing groove is a cylindrical groove open to the snubbing portion, the largest diameter of the snubbing portion being no greater than the snubbing groove diameter.

4. The snubbing shuttle valve of claim 3, wherein a length from a minimum diameter to a maximum diameter of an outermost edge of the snubbing cone is no greater than a depth of the snubbing groove in a direction of extension of the valve body.