One-way valve

Abstract

The utility model discloses a one-way valve, and relates to the technical field of one-way valves, the one-way valve comprises a first circulation part, and the first circulation part is used for medium circulation; the plugging part is arranged in the first circulation part and is used for sealing the interior of the first circulation part; part of the side wall of the blocking part abuts against the first circulation part so that the blocking part can move in the axis direction of the first circulation part. The at least one anti-rotation part is fixed to the first circulation part, makes contact with the blocking part and prevents the blocking part from rotating; the first plane is arranged on the plugging part; the second plane is arranged on the anti-rotation part, and the second plane is attached to the first plane and prevents the blocking part from rotating. The one-way valve has the effects of prolonging the service life and reducing the working noise.

Description

Technical Field

[0001] The present application relates to the technical field of one-way valves, and in particular to a one-way valve. Background Art

[0002] A one-way valve is a valve that allows fluid to only flow along the inlet, but the outlet medium cannot flow back, commonly known as a one-way valve.

[0003] In the prior art, a certain amount of eddy current may be generated during the flow of the medium in the one-way valve, which may cause the valve core to rotate in the valve body. During the rotation, friction will occur between the valve core and the inner wall of the valve body, causing wear, deformation and abnormal noise, thereby reducing the service life of the one-way valve. Utility Model Content

[0004] In order to increase the service life of the one-way valve and reduce operating noise, the present application provides a one-way valve.

[0005] The one-way valve provided in this application adopts the following technical solution:

[0006] A one-way valve includes a first circulation part, which is used for medium circulation; a blocking part, which is arranged inside the first circulation part and is used to close the inside of the first circulation part; a part of the side wall of the blocking part abuts against the first circulation part so that the blocking part keeps moving along the axial direction of the first circulation part; an anti-rotation part, at least one anti-rotation part is arranged and is fixed to the first circulation part and contacts with the blocking part to hinder the rotation of the blocking part; a first plane, which is arranged on the blocking part; and a second plane, which is arranged on the anti-rotation part, and the second plane is attached to the first plane and hinders the rotation of the blocking part.

[0007] By adopting the above technical solution, the first plane on the blocking part is fitted with the second plane on the anti-rotation part. Since the anti-rotation part is fixed inside the first flow part, the position of the anti-rotation part will not change. Therefore, under the limiting effect of the first plane and the second plane, the blocking part will not rotate inside the first flow part, thereby reducing the friction and impact between the valve core and the inner wall of the valve cavity, thereby reducing the working noise.

[0008] Optionally, an anti-slip portion for limiting the position of the blocking portion is fixed to the side wall of the anti-rotation portion.

[0009] By adopting the above technical solution, during the movement of the blocking part, the end of the blocking part abuts against the anti-slip part, so that the anti-slip part limits the blocking part and reduces the possibility of the blocking part being separated from the first flow part.

[0010] Optionally, a connecting ring is fixed to the end of the anti-rotation portion, and the connecting ring is fixed to the inner side wall of the first circulation portion.

[0011] By adopting the above technical solution, a connecting ring is fixed to the end of the anti-rotation part, and the connecting ring is fixed to the first flow part, so that the position of the anti-rotation part is fixed, and the fixing method is relatively simple.

[0012] Optionally, the inner side wall of the first flow portion is arranged in a step shape, and its diameter increases along the flow direction of the medium.

[0013] By adopting the above technical solution, the inner wall of the first circulation part is arranged in a step shape, and its diameter increases along the medium circulation direction, which is convenient for the sealing part to seal the inside of the first circulation part. The end face of the sealing part abuts against the side wall of the first circulation part arranged in a step shape to seal it; at the same time, if the diameter of the inner wall of the first circulation part is the same, when the first circulation part is connected to the pipeline, the inner wall of the first circulation part is fixed to the outer wall of the pipeline, so that the sealing part contacts the end of the pipeline during movement, which can also achieve a sealing effect.

[0014] Optionally, a first guide surface is formed at an end of the blocking portion that is away from the medium flow direction.

[0015] By adopting the above technical solution, the first guide surface facilitates the medium flow process. Since the first guide surface is inclined, the resistance of the sealing part to the medium is small during the medium flow process. At the same time, due to the existence of the first guide surface, it is convenient for the sealing part to seal the inside of the first flow part. The first guide surface contacts the diameter change point of the inner wall of the first flow part or the end of the pipeline. The medium flowing in the reverse direction always applies power to the sealing part, and the first guide surface is inclined, which can ensure the sealing performance to the greatest extent.

[0016] Optionally, a weight-reducing hole is provided at the end of the blocking portion, and the opening direction of the weight-reducing hole is the same as the flow direction of the medium.

[0017] By adopting the above technical solution, the weight-reducing hole reduces the mass of the plugging part, making it easier for the medium to push the plugging part to move.

[0018] Optionally, a positioning portion is provided on the outer side wall of the first flow portion.

[0019] By adopting the above technical solution, the positioning part can be set to be convex or concave, which is convenient for fixing the position of the first flow part. During use, the positioning part is connected to the inside of the pipeline, thereby fixing the position of the first flow part.

[0020] Optionally, a second guide surface is formed on the inner side wall of the first flow portion at the end portion facing the medium flow direction.

[0021] By adopting the above technical solution, the second guide surface expands the space at the medium inlet of the first flow part, which facilitates the medium flow process.

[0022] Optionally, there are two anti-rotation parts, and the two anti-rotation parts are symmetrically arranged.

[0023] By adopting the above technical solution, the two anti-rotation parts are symmetrically arranged, which can better limit the blocking part and reduce the possibility of rotation of the blocking part.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The first plane on the blocking part is in contact with the second plane on the anti-rotation part. Since the anti-rotation part is fixed inside the first circulation part, the position of the anti-rotation part will not change. Therefore, under the restriction of the first plane and the second plane, the blocking part will not rotate inside the first circulation part, which reduces the friction and impact between the valve core and the inner wall of the valve cavity, thereby reducing the working noise;

[0026] 2. The inner wall of the first circulation part is arranged in a step shape, and its diameter increases along the medium flow direction, which is convenient for the sealing part to seal the inside of the first circulation part. The end face of the sealing part abuts against the side wall of the first circulation part arranged in a step shape to seal it; at the same time, if the diameter of the inner wall of the first circulation part is the same, when the first circulation part is connected to the pipeline, the inner wall of the first circulation part is fixed to the outer wall of the pipeline, so that the sealing part contacts the end of the pipeline during movement, which can also achieve a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of the main structure of the embodiment of the present application.

[0028] Figure 2 It is an exploded view of the internal components of the first circulation part.

[0029] Description of reference numerals:

[0030] 1. First circulation part; 2. Sealing part; 3. Anti-rotation part; 4. First plane; 5. Second plane; 6. Anti-slip part; 7. Connecting ring; 8. First guide surface; 9. Lightening hole; 10. Positioning part; 11. Second guide surface. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-2 This application is described in further detail.

[0032] The present application embodiment discloses a one-way valve. Figure 1 and Figure 2The one-way valve comprises a first flow portion 1, which is used to connect with a pipeline to be connected. The first flow portion 1 is used for medium communication. By connecting it to the pipeline to be connected, the inside of the pipeline is connected; the inner wall of the first flow portion 1 is arranged in a step shape, and the inner wall diameter of the first flow portion 1 increases along the medium flow direction, that is, the inner wall diameter of the rear end along the medium flow direction is greater than the inner wall diameter of the front end; a blocking portion 2 is arranged inside the first flow portion 1, and the blocking portion 2 can slide inside the first flow portion 1, and part of the side wall of the blocking portion 2 abuts against the first flow portion 1 so that the blocking portion 2 keeps moving along the axial direction of the first flow portion 1, and contacts with the inner wall of the stepped first flow portion 1, thereby closing the inner wall of the first flow portion 1, so that the medium cannot flow inside the first flow portion 1, and the blocking portion 2 can slide along the first inner part of the first flow portion 1. The circulation part 1 moves in the axial direction, and a first guide surface 8 is provided at the end of the sealing part 2. The first guide surface 8 is placed at the end of the sealing part 2 away from the medium flow direction. Therefore, when the medium flows, the sealing part 2 will not cause a large obstruction to the flow of the medium. When the medium flows in the reverse direction, the sealing part 2 can be pushed to move, so that the first guide surface 8 on the sealing part 2 contacts with the step of the inner wall of the first circulation part 1, thereby closing the step, so that the medium in the first circulation part 1 cannot flow in the reverse direction, thereby achieving the effect of one-way flow; at the same time, a weight-reducing hole 9 is provided at the end of the sealing part 2, and the opening direction of the weight-reducing hole 9 is the same as the flow direction of the medium inside the first circulation part 1. When the medium inside the first circulation part 1 flows in the reverse direction, part of the medium is accumulated in the weight-reducing hole 9, which is convenient for the medium to push the sealing part 2 to move. At the same time, the existence of the weight-reducing hole 9 reduces the mass of the sealing part 2, which is convenient for the medium to push the sealing part 2 to move.

[0033] Reference Figure 1 and Figure 2 , an anti-rotation part 3 is distributed inside the first circulation part 1, at least one anti-rotation part 3 is provided, and the anti-rotation part 3 is in contact with the blocking part 2, thereby preventing the blocking part 2 from rotating inside the first circulation part 1, and the anti-rotation part 3 is fixed to the inner wall of the first circulation part 1; at least one first plane 4 is provided on the blocking part 2, and at least one second plane 5 is provided on the anti-rotation part 3, and the second plane 5 is in contact with the first plane 4. Since the anti-rotation part 3 is fixed to the inner wall of the first circulation part 1, no relative rotation will occur between the first plane 4 and the second plane 5. Since the second plane 5 is provided on the anti-rotation part 3 and the first plane 4 is provided on the blocking part 2, the blocking part 2 will not rotate under the limiting effect of the anti-rotation part 3, thereby reducing the collision between the blocking part 2 and the inner wall of the first circulation part 1, thereby reducing the working noise; at the same time, the side wall edge of the first plane 4 parallel to the axial direction of the first circulation part 1 abuts against the inner wall of the first circulation part 1, ensuring that no radial deflection will occur during the movement of the blocking part 2.

[0034] Reference Figure 1 and Figure 2 The side wall of the anti-rotation part 3 is fixed with an anti-slip part 6 by an integral molding method. The anti-slip part 6 is used to limit the position of the blocking part 2. During the movement of the blocking part 2, the end of the blocking part 2 contacts the side wall of the anti-slip part 6, so that the anti-slip part 6 limits the blocking part 2, reducing the possibility of the blocking part 2 being separated from the first flow part 1. At the same time, the end of the anti-rotation part 3 is fixed with a connecting ring 7 by bonding, clamping or welding. During the installation process, the connecting ring 7 is fixed to the inner wall of the first flow part 1 by clamping, bonding or welding, thereby fixing the anti-rotation part 3 to the inner wall of the first flow part 1.

[0035] Reference Figure 1 and Figure 2 A positioning portion 10 is provided on the outer wall of the first circulation portion 1. The positioning portion 10 can be provided in an outward convex ring shape or inward concave shape. In this embodiment, the positioning portion 10 is opened on the outer wall of the first circulation portion 1 and is provided in an inward concave shape, which is convenient for fixing the first circulation portion 1 inside the pipe to be connected, reducing the possibility of the first circulation portion 1 sliding inside the pipe; at the same time, a second guide surface 11 is provided on the inner wall of the end portion of the first circulation portion 1 facing the medium flow direction. The second guide surface 11 increases the space at the end portion of the first circulation portion 1 where the medium enters, reducing the possibility that the first circulation portion 1 affects the movement of the medium in the pipe.

[0036] Reference Figure 1 and Figure 2 ,

[0037] When there is one anti-rotation part 3, the first plane 4 on the blocking part 2 abuts against the second plane 5, and at the same time, the part of the side wall of the blocking part 2 that is opposite to the first plane 4 abuts against the inner wall of the first circulation part 1, so that the blocking part 2 can move along the axial direction of the first circulation part 1 inside the first circulation part without rotating, and the abutment between the outer wall of the blocking part 2 and the inner wall of the first circulation part 1 can be line contact or surface contact, and at the same time, the truncated cone-shaped part formed by the first guide surface 8 is coaxially arranged with the first circulation part 1, so that the blocking part 2 can close the inside of the first circulation part 1;

[0038] When there are two anti-rotation parts 3, the two anti-rotation parts 3 are symmetrically arranged about the axis of the first circulation part 1, and the anti-slipping parts 6 on the two anti-rotation parts 3 are connected to each other and formed as one piece, that is, the two ends of the same anti-slipping part 6 are respectively fixed to the side walls of the two anti-rotation parts 3. At this time, two first planes 4 are arranged on the blocking part 2, and the second planes 5 on the two anti-rotation parts 3 are respectively abutted against the two first planes 4, ensuring that the blocking part 2 will not rotate while being able to move along the axis direction of the first circulation part 1. At the same time, the side wall of the first plane 4 parallel to the axis direction of the first circulation part 1 abuts against the inner side wall of the first circulation part 1, ensuring that radial deflection will not occur during the movement of the blocking part 2;

[0039] When there are two anti-rotation parts 3, the two anti-rotation parts 3 may not be symmetrically arranged about the axis of the first circulation part 1. When the two anti-rotation parts 3 are not symmetrically arranged about the axis of the first circulation part 1, the two anti-rotation parts 3 are respectively placed outside the sealing block and inside the weight reduction hole 9, and the two first planes 4 are respectively placed on the outer wall of the sealing block and the inner wall of the weight reduction hole 9, and the second planes 5 on the two anti-rotation parts 3 are respectively abutted against the two first planes 4, which can also ensure that the sealing part 2 will not rotate while being able to move along the axis direction of the first circulation part 1. At this time, if the medium moves in the opposite direction inside the first circulation part 1, under the action of the first guide surface 8, it can be ensured that the sealing part 2 will close the inside of the first circulation part 1.

[0040] When there are three or more anti-rotation parts 3, the configuration is similar to that of two anti-rotation parts 3, and will not be described in detail here;

[0041] In this embodiment, two anti-rotation parts 3 are used.

[0042] The implementation principle of a one-way valve in an embodiment of the present application is as follows: the anti-rotation portion 3 has a limiting effect on the blocking portion 2, so that the blocking portion 2 moves in the first flow portion 1 along the axial direction of the first flow portion 1 without colliding with the inner wall of the first flow portion 1, thereby reducing the noise generated during the working process.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A one-way valve, characterized in that: It comprises a first circulation part (1), wherein the first circulation part (1) is used for medium circulation; A blocking portion (2) is arranged inside the first circulation portion (1) and is used to seal the inside of the first circulation portion (1); Part of the side wall of the blocking portion (2) abuts against the first flow portion (1) so that the blocking portion (2) keeps moving along the axial direction of the first flow portion (1); an anti-rotation part (3), wherein at least one anti-rotation part (3) is provided and fixed to the first flow portion (1) and in contact with the blocking part (2) to prevent the blocking part (2) from rotating; A first plane (4) is arranged on the blocking portion (2); The second plane (5) is arranged on the anti-rotation part (3), and the second plane (5) is in contact with the first plane (4) and prevents the blocking part (2) from rotating.

2. The one-way valve according to claim 1, characterized in that: An anti-slip portion (6) for limiting the position of the blocking portion (2) is fixed to the side wall of the anti-rotation portion (3).

3. The one-way valve according to claim 1, characterized in that: A connecting ring (7) is fixed to the end of the anti-rotation portion (3), and the connecting ring (7) is fixed to the inner side wall of the first circulation portion (1).

4. The one-way valve according to claim 1, characterized in that: The inner side wall of the first circulation part (1) is arranged in a step-like shape, and its diameter increases along the medium circulation direction.

5. The one-way valve according to claim 1, characterized in that: The end of the blocking portion (2) facing away from the medium flow direction is provided with a first guide surface (8).

6. The one-way valve according to claim 1, characterized in that: A weight-reducing hole (9) is provided at the end of the blocking portion (2), and the opening direction of the weight-reducing hole (9) is the same as the flow direction of the medium.

7. The one-way valve according to claim 1, characterized in that: The outer side wall of the first circulation portion (1) is provided with a positioning portion (10).

8. The one-way valve according to claim 1, characterized in that: The first circulation portion (1) is provided with a second guide surface (11) on the inner side wall of the end portion facing the medium circulation direction.

9. The one-way valve according to claim 1, characterized in that: There are two anti-rotation parts (3), and the two anti-rotation parts (3) are symmetrically arranged.

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