CN211315235U

CN211315235U - Check valve convenient to installation

Info

Publication number: CN211315235U
Application number: CN201922305279.5U
Authority: CN
Inventors: 蔡传龙; 陈寿华; 刘晓庆; 徐晓宁; 梁玲玲; 李霄汉
Original assignee: Weihai Jinding Machinery Manufacturing Co ltd
Current assignee: Weihai Jinding Machinery Manufacturing Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-21
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a single current valve convenient to installation, which comprises a valve body, the valve body left end is equipped with the air inlet, and left end arc recess has been seted up in the air inlet outside, and left end arc recess endotheca has the expansion ring that admits air, and the valve body right side is equipped with the gas outlet, and right-hand member arc recess has been seted up in the gas outlet outside, and right-hand member arc recess endotheca has the expansion ring of giving vent to anger. The utility model discloses need not install the sealing member at the valve body both ends when the installation, through the inflation of gas expansion circle and take over in close contact with, the installation of being convenient for, and can directly confirm the installation direction of single current valve, avoid the installation mistake.

Description

Check valve convenient to installation

Technical Field

The utility model relates to a single current valve technical field specifically is a single current valve convenient to installation.

Background

The check valve is commonly called as a check valve, wherein fluid can only flow in a single direction and cannot flow back. Check valves are also known as check valves or back-up valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems. The check valve has two types of straight-through type and right-angle type. The straight-through check valve is installed on the pipeline by threaded connection. The right-angle check valve has three forms of threaded connection, plate connection and flange connection, but a sealing element with a specific size is required during installation, the connection part is sealed, and the installation is complex. Accordingly, one skilled in the art has provided a check valve that is easy to install to solve the problems set forth in the background art described above.

Disclosure of Invention

An object of the utility model is to provide a single current valve convenient to installation to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a check valve convenient to installation, includes the valve body, the valve body left end is equipped with the air inlet, and left end arc recess has been seted up in the air inlet outside, and left end arc recess endotheca has the expansion ring that admits air, and the valve body right side is equipped with the gas outlet, and right-hand member arc recess has been seted up in the gas outlet outside, and right-hand member arc recess endotheca has the expansion ring of giving vent to.

As a further aspect of the present invention: the air expansion ring and the air outlet expansion ring have the same structure.

As a further aspect of the present invention: the air inlet expansion ring is composed of an annular hollow rubber ring and a hard connecting pipe, the hard connecting pipe is located at the radial position of the annular hollow rubber ring, air enters the annular hollow rubber ring through the hard connecting pipe, and the air inlet expansion ring is inflated and expanded to be in close contact with the air inlet connecting pipe.

As a further aspect of the present invention: the valve body is internally provided with a cavity, the inner diameter of the cavity is larger than that of the air inlet, and a valve core is arranged in the cavity.

As a further aspect of the present invention: a sealing ring is arranged between the joint of the air inlet and the cavity and the valve core, and when ventilation is stopped, air is prevented from flowing back to the air inlet from the gap.

As a further aspect of the present invention: the valve core is hollow, air holes are radially distributed in the valve core, when the valve core is pushed, the air holes are communicated with the cavity, and air flows into the cavity.

As a further aspect of the present invention: the right end of the valve core is fixedly connected with the spring, the right end of the spring is fixed with the bottom of the cavity, and the valve core stops ventilating and contacts the sealing ring again under the restoring force of the spring to prevent gas from flowing back.

As a further aspect of the present invention: the check valve mark is arranged on the outer surface of the valve body, so that the installation direction is directly determined, and errors are avoided.

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

1. when the valve body is installed, sealing parts are not needed to be arranged at the two ends of the valve body, and the valve body is in close contact with the connecting pipe through expansion of the air expansion ring, so that the valve body is convenient to install;

2. the installation direction of the check valve can be directly determined, and installation errors are avoided.

Drawings

Fig. 1 is a schematic structural view of a check valve which is convenient to install.

Fig. 2 is a structural schematic diagram of an expansion ring in a check valve convenient to install.

FIG. 3 is a schematic view of the outer surface of a check valve for ease of installation.

In the figure: 1. a valve body; 2. an air inlet; 3. an air intake expansion ring; 4. a valve core; 5. a seal ring; 6. an air outlet expansion ring; 7. an air outlet; 8. a spring; 9. air holes; 10. an annular hollow rubber ring; 11. hard connecting pipes; 12. a single flow valve flag.

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.

Please refer to fig. 1-3, in the embodiment of the utility model provides an in, a check valve convenient to installation, including

valve body

1, 1 left end of valve body is equipped with air inlet 2, and left end arc recess has been seted up in the 2 outsides of air inlet, and left end arc recess endotheca has air

inlet expansion circle

3, and 1 right side of valve body is equipped with gas outlet 7, and right-hand member arc recess has been seted up in the 7 outsides of gas outlet, and right-hand member arc recess endotheca has air outlet expansion circle 6.

Gas expansion circle 3 is the same with 6 structures of expansion circle of giving vent to anger, gas expansion circle 3 is taken over 11 by annular hollow rubber circle 10 and stereoplasm and is constituteed, and stereoplasm is taken over 11 and is located the radial department of annular

hollow rubber circle

10, 1 inside cavity that is equipped with of valve body, and the cavity internal diameter is greater than the 2 internal diameters of air inlet, the built-in case 4 that is equipped with of cavity, be provided with sealing washer 5 between air inlet 2 and cavity handing-over department and the case 4, case 4 is inside hollow, and case 4 radial distribution has

gas pocket

9, 4 right-hand members fixed connection springs 8 of case, and 8 right-hand members of spring are fixed bottom the cavity, 1.

The utility model discloses a theory of operation is: the single-flow valve is installed between pipelines, when gas is introduced from the gas inlet 2, the gas firstly enters the annular hollow rubber ring 10 through the hard connecting pipe 11, the gas inlet expansion ring 3 is inflated and expanded to be in close contact with the gas inlet connecting pipe, the gas is continuously introduced to push the valve core 4 to move rightwards and extrude the spring 8 until the valve core 4 leaves the sealing ring 5, at the moment, the gas hole 9 is communicated with the cavity, the gas flows into the cavity and flows out 7 from the gas outlet, because the pressure of the gas outlet 7 is greater than the atmospheric pressure, the gas outlet expansion ring 6 expands to be in close contact with the gas outlet connecting pipe, when the conveying is stopped, the pressure of the valve core 4 is reduced, the valve core 4 is in contact with the sealing ring 5 again under the restoring force of the spring 8 to prevent the gas.

The 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 utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a single current valve convenient to installation, includes valve body (1), its characterized in that, valve body (1) left end is equipped with air inlet (2), and left end arc recess has been seted up in air inlet (2) outside, and left end arc recess endotheca has air inlet expansion circle (3), and valve body (1) right side is equipped with gas outlet (7), and right-hand member arc recess has been seted up in gas outlet (7) outside, and right-hand member arc recess endotheca has air outlet expansion circle (6).

2. A simple to install check valve as claimed in claim 1, wherein the inlet expansion ring (3) and the outlet expansion ring (6) are of the same construction.

3. A simple-to-mount check valve as claimed in claim 1, wherein the air inlet expansion ring (3) is composed of an annular hollow rubber ring (10) and a hard connecting pipe (11), and the hard connecting pipe (11) is located at the radial position of the annular hollow rubber ring (10).

4. A check valve easy to install according to claim 1, characterized in that the valve body (1) is provided with a cavity inside, the inner diameter of the cavity is larger than that of the air inlet (2), and the cavity is provided with a valve core (4).

5. An easy to install check valve as claimed in claim 4, wherein a sealing ring (5) is arranged between the valve core (4) and the junction of the air inlet (2) and the cavity.

6. A check valve easy to install according to claim 4, characterized in that the valve core (4) is hollow inside and the valve core (4) is distributed with air holes (9) radially.

7. An easy-to-install check valve as claimed in claim 4, wherein the right end of the valve core (4) is fixedly connected with the spring (8), and the right end of the spring (8) is fixed with the bottom of the cavity.

8. A check valve easy to install as in claim 1, characterized by that, the outer surface of the valve body (1) is provided with check valve logo (12).