CN216112352U

CN216112352U - One-way valve

Info

Publication number: CN216112352U
Application number: CN202122792179.7U
Authority: CN
Inventors: 傅贻文; 宋鸥; 孙军杰
Original assignee: Yantai Eddie Precision Machinery Co Ltd
Current assignee: Yantai Eddie Precision Machinery Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-03-22
Anticipated expiration: 2031-11-15

Abstract

The utility model relates to a one-way valve which comprises a first valve body, a second valve body arranged on the first valve body and a valve core arranged between the first valve body and the second valve body, wherein a first concave part matched with one side of the valve core is arranged in the first valve body, a second concave part matched with the other side of the valve core is arranged in the second valve body, the first concave part and the second concave part are matched to form a valve cavity for accommodating the valve core, an inlet side channel for fluid to flow in is arranged on the first valve body, an outlet side channel for fluid to flow out is arranged on the second valve body, and the valve core closes or opens a channel between the inlet side channel and the outlet side channel by contacting or separating with the first concave part. And the first valve body is in threaded connection with the second valve body. The utility model has simple and compact structure, convenient installation, few parts and low processing and maintenance cost, improves the sensitivity and the reliability of the check valve and can be suitable for complex vibration operation environment.

Description

One-way valve

Technical Field

The utility model relates to a one-way valve, and belongs to the technical field of valves.

Background

The check valve is also called as a check valve or a check valve, fluid can only flow from an inlet side to an outlet side, a medium on the outlet side cannot flow back, the reverse flow of the fluid is prevented through the valve core, and the check valve is mainly used for preventing the flow of oil in a hydraulic system or preventing the reverse flow of compressed air in a pneumatic system.

The existing check valve has various types such as a spring type check valve and a gravity type check valve, for example, the spring type check valve has a wide application range, and a valve clack is reset by the spring.

The hydraulic breaking hammer is widely applied to engineering construction, the breaking hammer is supplied to the breaking hammer through high-pressure fluid to drive a piston in contact with a drill rod to reciprocate and strike the drill rod to complete a breaking task, the piston can rebound quickly after striking the drill rod, high pressure can exist in an upper cavity of the breaking hammer, rebound energy cannot be released timely, the breaking hammer can be damaged when the piston is seriously vibrated, and therefore a check valve is required to release the high pressure of the upper cavity. In addition, the flow channel of the existing check valve with a complex structure is small, hydraulic oil in the upper cavity cannot be quickly released when the piston rebounds, and the requirement of the breaking hammer cannot be met.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the check valve which has the advantages of simple structure, few parts, low cost and long service life and can be suitable for complex vibration operation environments.

The technical scheme for solving the technical problems is as follows: a check valve comprises a first valve body, a second valve body arranged on the first valve body and a valve core arranged between the first valve body and the second valve body, wherein a first concave part matched with one side of the valve core is arranged in the first valve body, a second concave part matched with the other side of the valve core is arranged in the second valve body, the first concave part and the second concave part are matched to form a valve cavity for accommodating the valve core, an inlet side channel for fluid to flow in is arranged on the first valve body, an outlet side channel for fluid to flow out is arranged on the second valve body, and the valve core closes or opens a channel between the inlet side channel and the outlet side channel by contacting or separating with the first concave part.

The utility model has the beneficial effects that: when the fluid flows in from the outlet side channel, the fluid applies force to the valve core, the valve core is separated from the first concave part of the first valve body under the action of the fluid, the inlet side channel is communicated with the outlet side channel, the one-way valve is in forward conduction, when the fluid flows in from the outlet side channel, the fluid applies force to the valve core, the valve core is contacted with the first concave part of the first valve body, the inlet side channel is not communicated with the outlet side channel, and the direction of the one-way valve is closed. The utility model has simple and compact structure, convenient installation, few parts and low processing and maintenance cost, improves the sensitivity and the reliability of the check valve and can be suitable for complex vibration operation environment.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the first valve body is in threaded connection with the second valve body.

The beneficial effect of adopting above-mentioned further scheme is that, through threaded connection between the two, not only simple structure connects reliably, installs and removes the convenience moreover, and the maintenance of being convenient for, and the maintenance cost is low.

Further, the first valve body is connected with the second valve body through a plug.

The beneficial effect who adopts above-mentioned further scheme is, further increases the joint strength between two valve bodies to guarantee the stability of check valve.

Further, the valve core is of a spherical structure.

The valve core can move in the valve cavity under the action of fluid, and can meet the sealing requirements of the check valve that the flow of the channel is not influenced and the reverse direction is blocked when the spherical valve core is opened in the forward direction at the position of the second concave part.

Further, the inlet-side passage includes an axial passage provided on the first valve body and at least one radial passage communicating with the axial passage.

The valve core has the advantages that the axial channel is convenient to open and close the valve core, the radial channels can be arranged in a plurality of ways so as to increase the flow of fluid, and the sensitivity and the reliability of a pipeline for installing the check valve are improved.

Further, the outlet-side passage includes at least one passage hole provided in the second valve body.

The beneficial effects of adopting above-mentioned further scheme are that, the processing of the internal concave part of second valve not only is convenient for in a plurality of channel holes of axial setting, and the self of valve body supports intensity greatly moreover, can also satisfy fluid flow's requirement simultaneously.

Furthermore, the first valve body comprises a cylinder body, and an external thread in threaded connection with the cylinder body is arranged on the outer side of the second valve body.

Adopt above-mentioned further scheme's beneficial effect be, second valve body and first valve body threaded connection, and specific second valve body is installed in the barrel part of first valve body, simple to operate.

Furthermore, a positioning ring groove for installing a sealing ring is further arranged on the first valve body.

The beneficial effect who adopts above-mentioned further scheme is that, can be used to the location installation sealing washer in the positioning ring groove, further improves valve body and valve body mounting structure's sealed effect.

Furthermore, the first valve body further comprises a positioning portion, and a screwing groove is formed in the end face of the positioning portion.

The beneficial effect who adopts above-mentioned further scheme is, be convenient for with instrument cooperations such as spanner, realize the location installation of valve body.

Furthermore, the wrenching groove is of an inner hexagonal structure.

The beneficial effect who adopts above-mentioned further scheme is, can with ordinary hexagonal spanner cooperation, need not special spanner, dismouting and maintenance convenient and fast, with low costs.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

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

FIG. 3 is a schematic cross-sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a schematic structural view of a second valve body of the present invention;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a perspective view of a second valve body according to the present invention;

in the figure, 1, a first valve body; 11. a first recess; 12. an axial channel; 13. a radial channel; 14. a barrel portion; 15. a positioning part; 16. a positioning ring groove; 17. wrenching the groove; 2. a second valve body; 21. a second recess; 22. an outlet side passage; 3. a valve core; 4. plugging with a thread; 5. and (5) sealing rings.

Detailed Description

The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the utility model.

As shown in fig. 1 to 6, a check valve includes a first valve body 1, a second valve body 2 disposed on the first valve body 1, and a valve core 3 disposed between the first valve body 1 and the second valve body 2, a first concave portion 11 adapted to one side of the valve core 3 is disposed in the first valve body 1, a second concave portion 21 adapted to the other side of the valve core 3 is disposed in the second valve body 2, the first concave portion 11 and the second concave portion 21 cooperate to form a valve cavity for accommodating the valve core 3, an inlet side passage for fluid to flow in is disposed on the first valve body 1, an outlet side passage 22 for fluid to flow out is disposed on the second valve body 2, and the valve core 3 closes or opens a passage between the inlet side passage and the outlet side passage 22 by contacting or separating from the first concave portion 11.

The first valve body 1 is in threaded connection with the second valve body 2. The two are connected through screw threads, so that the structure is simple, the connection is reliable, the assembly and disassembly are convenient, the maintenance is convenient, and the maintenance cost is low.

The first valve body 1 and the second valve body 2 are connected through a plug 4. Further increase the joint strength between two valve bodies to guarantee the stability of check valve.

The valve core 3 is of a spherical structure. One side of the spherical structure of the valve core 3 is matched with the first concave part 11, the inlet side channel and the outlet side channel 22 can be closed or opened through contact or separation with the first concave part 11, the flow of fluid is realized, the other side of the spherical structure is matched with the second concave part 21, the valve core 3 can move in the valve cavity under the action force of the fluid, and the sealing requirements of the check valve that the flow of the channels is not influenced and the reverse direction is not communicated when the spherical valve core 3 is opened in the forward direction at the position of the second concave part 21 can be met.

The inlet side passage includes an axial passage 12 provided on the first valve body 1 and at least one radial passage 13 communicating with the axial passage 12. The axial channels 12 facilitate the opening and closing of the cartridge 3, while the radial channels 13 may be provided in plurality to increase the fluid flow, providing the sensitivity and reliability of the line in which the non-return valve is installed.

The outlet-side passage 22 includes at least one passage hole provided in the second valve body 2. The plurality of channel holes which are axially arranged not only facilitate the processing of the concave part in the second valve body 2, but also ensure the high self-supporting strength of the valve body and meet the requirement of fluid flow.

The first valve body 1 comprises a cylinder part 14, and the outer side of the second valve body 2 is provided with an external thread which is in threaded connection with the cylinder part 14. The second valve body 2 is in threaded connection with the first valve body 1, and the second valve body 2 is installed in the barrel part 14 of the first valve body 1, so that the installation is convenient.

And the first valve body 1 is also provided with a positioning ring groove 16 for mounting the sealing ring 5. The positioning ring groove 16 can be used for positioning and installing the sealing ring 5, and the sealing effect of the valve body and valve body installation structure is further improved.

The first valve body 1 further comprises a positioning portion 15, and a wrenching groove 17 is formed in the end face of the positioning portion 15. The valve body can be conveniently matched with tools such as a wrench and the like, and the valve body can be positioned and installed.

The wrenching grooves 17 are of an internal hexagonal structure. Can be matched with a common hexagonal wrench, does not need a special wrench, is convenient and quick to disassemble, assemble and maintain and has low cost.

The check valve has the advantages of simple and compact structure, small number of parts, more convenient installation, reduced processing and maintenance cost of the valve body, small opening force, large fluid flow, good sealing performance and improved sensitivity and reliability of the fluid pipeline.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The check valve is characterized by comprising a first valve body (1), a second valve body (2) arranged on the first valve body (1) and a valve core (3) arranged between the first valve body and the second valve body, wherein a first concave portion (11) matched with the valve core (3) is arranged in the first valve body (1), a second concave portion (21) matched with the valve core (3) is arranged in the second valve body (2), the first concave portion (11) and the second concave portion (21) are matched to form a valve cavity for accommodating the valve core (3), an inlet side channel is arranged on the first valve body (1), an outlet side channel (22) is arranged on the second valve body (2), and the valve core (3) closes or opens a channel between the inlet side channel and the outlet side channel (22) through contact or separation with the first concave portion (11).

2. Non-return valve according to claim 1, characterized in that the first valve body (1) and the second valve body (2) are in threaded connection.

3. Non-return valve according to claim 1 or 2, characterized in that the first valve body (1) and the second valve body (2) are connected by a plug (4).

4. A non-return valve according to claim 1, characterised in that the spool (3) is of spherical configuration.

5. Non-return valve according to claim 1, characterized in that the inlet-side passage comprises an axial passage (12) provided on the first valve body (1) and at least one radial passage (13) communicating with the axial passage (12).

6. Non-return valve according to claim 1, characterized in that the outlet-side channel (22) comprises at least one channel hole provided in the second valve body (2).

7. Non-return valve according to claim 1, characterised in that the first valve body (1) comprises a cylinder (14) and the second valve body (2) is provided on its outside with an external thread screwed to the cylinder (14).

8. The non-return valve according to claim 1, characterized in that the first valve body (1) is further provided with a positioning ring groove (16) for mounting the sealing ring (5).

9. The check valve according to claim 1, characterized in that the first valve body (1) further comprises a positioning portion (15), and a wrenching groove (17) is provided on an end surface of the positioning portion (15).

10. Non-return valve according to claim 9, characterised in that the wrenching grooves (17) are of internal hexagonal configuration.