CN218719034U

CN218719034U - Liquid phase one-way valve

Info

Publication number: CN218719034U
Application number: CN202223227438.2U
Authority: CN
Inventors: 肖乐
Original assignee: Shenzhen Anbo Intelligent Controls Technology Co ltd
Current assignee: Shenzhen Anbo Intelligent Controls Technology Co ltd
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-03-24
Anticipated expiration: 2032-12-03

Abstract

The utility model discloses a liquid phase one-way valve, which comprises a main body, a guide pad, a sealing shaft and a return spring; a first cavity and a second cavity are arranged in the main body, and the first cavity is oppositely communicated with the second cavity through a first through hole; the guide pad and the sealing shaft are both arranged in the first cavity, and the guide pad sleeve is arranged on the sealing shaft and limited in the first cavity; the return spring is sleeved on the sealing shaft; the sealing shaft plays a role in one-way sealing; the reset spring plays a self-closing reset role; the guide pad plays a role of guiding the sealing shaft, liquid flows into the main body through the liquid phase pipe and enters the second cavity, the sealing shaft is extruded by liquid phase pressure, the sealing shaft is far away from the first through hole, the reset spring compresses, and the liquid flows into the first cavity, flows out of the first cavity through the second through hole and flows into the liquid phase valve; when the liquid stops conveying, the return spring resets, and the sealing shaft is close to the first through hole and stops at one side of the first through hole to form an initial position.

Description

Liquid phase one-way valve

Technical Field

The utility model relates to a check valve technical field especially relates to a liquid phase check valve.

Background

The check valve is one of important parts of the liquid phase device, and the design, processing and assembly states of the check valve can directly influence the service life and maintenance frequency of the liquid phase device and influence the precision and repeatability of the liquid phase device; the using state, the detection precision and the effect of the whole instrument are also influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a liquid phase one-way valve.

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

a liquid phase one-way valve comprises a main body, a guide pad, a sealing shaft and a return spring; a first cavity and a second cavity are arranged in the main body, and the first cavity is oppositely communicated with the second cavity through a first through hole; the guide pad and the sealing shaft are both arranged in the first cavity, and the guide pad is arranged on the sealing shaft and limited in the first cavity; the return spring is sleeved on the sealing shaft.

Preferably, the bottom of the sealing shaft is arranged at the bottom of the first cavity and is positioned at one side of the first through hole, and the diameter of the bottom of the sealing shaft is larger than that of the first through hole.

Preferably, a step surface is arranged on the inner wall of the first cavity in a surrounding mode, and one side of the guide pad is arranged on the step surface.

Preferably, the return spring is sleeved on the sealing shaft, and one end of the return spring is abutted to the guide pad.

Preferably, a plurality of second through holes are formed in the guide pad in a surrounding mode, and the second through holes are communicated with the first cavity body oppositely.

Preferably, a plurality of first thread turns are arranged around the inner wall of the second cavity.

Preferably, a plurality of second thread turns are arranged on the main body in a surrounding manner.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model designs a liquid phase check valve, the bottom of the sealing shaft is plugged at one side of the first through hole, which plays a role of one-way sealing; the return spring is sleeved on the sealing shaft, and one end of the return spring is abutted against the guide pad; the reset spring plays a self-closing reset role; the main body is connected with the liquid phase valve through a second threaded ring and connected with the liquid phase pipe through a first threaded ring; the threaded connection between the two objects is firmer; liquid flows into the main body through the liquid phase pipe and enters the second cavity, the liquid phase pressure extrudes the sealing shaft, the sealing shaft is far away from the first through hole, the reset spring compresses, and the liquid flows into the first cavity, flows out of the first cavity through the second through hole and flows into the liquid phase valve; when the liquid stops conveying, the return spring resets, and the sealing shaft is close to the first through hole and stops at one side of the first through hole and at the initial position.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention.

Illustration of the drawings:

1. a main body 2, a guide pad,

3. a sealing shaft, 4 and a return spring,

5. a first through hole 11, a first cavity,

12. a second cavity, 13, a step surface,

14. a first thread turn, 15, a second thread turn,

21. a second via.

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", etc. 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 the 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; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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 to 2, a liquid phase check valve includes a body 1, a guide pad 2, a seal shaft 3, and a return spring 4; a first cavity 11 and a second cavity 12 are arranged in the main body 1, and the first cavity 11 is oppositely communicated with the second cavity 12 through a first through hole 5; the guide pad 2 and the sealing shaft 3 are both arranged in the first cavity 11, and the guide pad 2 is sleeved on the sealing shaft 3 and limited in the first cavity 11; the return spring 4 is sleeved on the sealing shaft 3.

The bottom of the sealing shaft 3 is arranged at the bottom of the first cavity 11 and is positioned at one side of the first through hole 5, and the diameter of the bottom of the sealing shaft 3 is larger than that of the first through hole 5; the bottom of the sealing shaft 3 is blocked at one side of the first through hole 5, and a one-way sealing effect is achieved.

A step surface 13 is arranged on the inner wall of the first cavity 11 in a surrounding manner, and one side of the guide pad 2 is arranged on the step surface 13; the return spring 4 is sleeved on the sealing shaft 3, and one end of the return spring 4 is abutted against the guide pad 2; the return spring 4 plays a self-closing return role.

A plurality of second through holes 21 are arranged on the guide pad 2 in a surrounding manner, and the plurality of second through holes 21 are communicated with the first cavity 11 oppositely; the guide pad 2 serves to guide the seal shaft 3.

A plurality of first thread rings 14 are arranged on the inner wall of the second cavity 12 in a surrounding manner, and are connected with the liquid phase pipe through the first thread rings 14; a plurality of second threaded rings 15 are arranged on the main body 1 in a surrounding mode, and the main body is connected with a liquid phase valve through the second threaded rings 15; the threaded connection between the two objects is firmer.

The utility model discloses a theory of operation: liquid flows into the main body 1 through the liquid phase pipe and enters the second cavity 12, the sealing shaft 3 is extruded by liquid phase pressure, the sealing shaft 3 is far away from the first through hole 5, the return spring 4 is compressed, and the liquid flows into the first cavity 11, flows out of the first cavity 11 through the second through hole 21 and flows into the liquid phase valve; when the liquid stops being conveyed, the return spring 4 is reset, and the sealing shaft 3 is close to the first through hole 5 and stops at one side of the first through hole 5, namely the initial position.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The liquid phase one-way valve is characterized by comprising a main body, a guide pad, a sealing shaft and a return spring; a first cavity and a second cavity are arranged in the main body, and the first cavity is oppositely communicated with the second cavity through a first through hole; the guide pad and the sealing shaft are both arranged in the first cavity, and the guide pad sleeve is arranged on the sealing shaft and limited in the first cavity; the return spring is sleeved on the sealing shaft.

2. The liquid check valve of claim 1, wherein a bottom of the sealing shaft is disposed at a bottom of the first cavity and located at a side of the first through hole, and a diameter of the bottom of the sealing shaft is larger than a diameter of the first through hole.

3. The liquid check valve of claim 1, wherein a step surface is circumferentially disposed on an inner wall of the first chamber, and one side of the guide pad is disposed on the step surface.

4. The liquid check valve of claim 3, wherein the return spring is sleeved on the seal shaft, and one end of the return spring abuts against the guide pad.

5. The liquid check valve of claim 1, wherein a plurality of second through holes are circumferentially arranged on the guide pad, and the plurality of second through holes are opposite to the first cavity.

6. The liquid check valve of claim 1, wherein the second cavity inner wall is circumferentially provided with a plurality of first thread turns.

7. The liquid check valve of claim 1, wherein a plurality of second thread turns are circumferentially disposed on the body.