Novel one-way valve

Abstract

The utility model discloses a novel one-way valve, and relates to the technical field of one-way valves, the novel one-way valve comprises a valve seat, an abutting part is fixed in the valve seat, a valve core seat is fixed in the valve seat, a sealing part is arranged on the valve core seat, and the sealing part is in contact with the abutting part to seal the interior of the valve seat. The service life of the one-way valve is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of check valves, and more particularly to a new type of check valve. Background Art

[0002] A check valve is a valve in which fluid can only flow along the inlet, and the medium at the outlet cannot flow back. It is commonly used in hydraulic systems to prevent reverse oil flow, or in pneumatic systems to prevent reverse flow of compressed air.

[0003] The patent with the publication number CN204628658U discloses a check valve, which includes: a valve body; a first-stage check valve disposed in the valve body; and a second-stage check valve disposed in the valve body and connected in series with the first-stage check valve. Further, the outlet of the first-stage check valve is the inlet of the second-stage check valve, and the outlet of the first-stage check valve is located in the valve body. In this utility model, two-stage check valves are provided in one check valve. Even if one stage of the check valve fails, the other stage of the check valve will still function and no large leakage will occur. Compared with the failure of a single-stage check valve, the check valve of this utility model can reduce the problem of large leakage.

[0004] In the process of implementing the above application, the inventor found that there are at least the following problems in this technology. There are many components in the above check valve, and more components will increase the probability of damage, thereby affecting the service life of the valve body. Summary of the Utility Model

[0005] In order to improve the service life of the check valve, this application provides a new type of check valve.

[0006] The new type of check valve provided by this application adopts the following technical solutions:

[0007] A new type of check valve includes a valve seat, in which an abutting portion is fixed, a valve core seat is fixed inside the valve seat, and a closing portion is provided on the valve core seat. The closing portion contacts the abutting portion to close the inside of the valve seat.

[0008] By adopting the above technical solution, when the medium flows from the abutting portion to the valve core seat, since the closing portion can slide and is not restricted, the medium can flow through. When the medium flows from the valve core seat to the abutting portion, under the action of the abutting portion and the closing portion, the medium cannot flow, realizing the one-way flow of the valve seat.

[0009] Optionally, the closing portion includes a first closing rod and a first closing sleeve. The first closing rod is fixed to the valve core seat. The first closing sleeve is provided with a hollow interior and a first closing tube for passing through the first closing rod is fixed inside.

[0010] By adopting the above technical solution, the first closed sleeve is hollow and internally fixed with a first closed tube for passing through the first closed rod, so that the first closed tube can slide on the first closed rod, thereby controlling the sliding of the first closed sleeve and opening or closing the abutting portion.

[0011] Optionally, a first abutting protrusion is fixed on the inner side wall of the abutting portion, and the side wall of the first closed sleeve is inclined and abuts against the first abutting protrusion.

[0012] By adopting the above technical solution, the side wall of the first closed sleeve is inclined and abuts against the first abutting protrusion. When the two are in contact, the abutting portion is closed and the medium cannot flow. When the two are separated, the abutting portion is opened and the medium can flow, enabling the valve seat to achieve a one-way flow function.

[0013] Optionally, the closing portion includes a second closed rod and a second closed sleeve. The second closed rod is fixed to the valve core seat. The second closed sleeve is plate-shaped and a second closed tube for passing through the second closed rod is fixed to the end face of the second closed sleeve.

[0014] By adopting the above technical solution, the second closed tube slides on the second closed rod, thereby driving the second closed sleeve to move and controlling the opening or closing of the abutting portion.

[0015] Optionally, a second abutting protrusion is fixed to the end face of the abutting portion, and the second abutting protrusion abuts against the end face of the second closed sleeve.

[0016] By adopting the above technical solution, the second abutting protrusion abuts against the end face of the second closed sleeve. When the second abutting protrusion contacts the end face of the second closed sleeve, the abutting portion is closed. When the second abutting protrusion is separated from the end face of the second closed sleeve, the abutting portion is opened.

[0017] Optionally, the closing portion includes a third closed rod and a first closing plate. The third closed rod is fixed to the first closing plate, and the third closed rod is slidably arranged on the valve core seat.

[0018] By adopting the above technical solution, the third closed rod is slidably arranged on the valve core seat, thereby driving the third closed rod to slide, making the third closed rod contact or separate from the abutting portion, and thus controlling the closing or opening of the abutting portion.

[0019] Optionally, a positioning cylinder for positioning the third closed rod is fixed on the valve core seat.

[0020] By adopting the above technical solution, the positioning cylinder plays a role in positioning the third closed rod, reducing the possibility of the third positioning rod shifting in position during the sliding process.

[0021] Optionally, a third abutting protrusion is fixed to the end face of the abutting portion, and the third abutting protrusion abuts against the first closing plate.

[0022] By adopting the above technical solution, the third abutting projection abuts against the first closing plate. When the first closing plate contacts the third abutting projection, the abutting portion is closed. When the first closing plate separates from the third abutting projection, the abutting portion is opened, facilitating the valve body to achieve the function of one-way flow of the medium.

[0023] Optionally, a boss is fixed inside the valve seat, and the end face of the valve core seat abuts against the end face of the boss.

[0024] By adopting the above technical solution, the boss plays a role in limiting the valve core seat, reducing the possibility of the valve core seat shifting in position.

[0025] Optionally, a flow port is provided on the valve core seat.

[0026] By adopting the above technical solution, the flow port facilitates the process of liquid flow.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When the medium flows from the abutting portion to the valve core seat, since the closing portion can slide without restriction, the medium can flow. When the medium flows from the valve core seat to the abutting portion, under the action of the abutting portion and the closing portion, the medium cannot flow, realizing the one-way flow of the valve seat;

[0029] 2. The boss plays a role in limiting the valve core seat, reducing the possibility of the valve core seat shifting in position. Description of the Drawings

[0030] Figure 1 It is a cross-sectional view of the main structure of Embodiment 1 of the present application.

[0031] Figure 2 It is a cross-sectional view of the main structure of Embodiment 2 of the present application.

[0032] Figure 3 It is a cross-sectional view of the main structure of Embodiment 3 of the present application.

[0033] Description of the Reference Numerals:

[0034] 1. Valve seat; 2. Abutting portion; 3. Valve core seat; 4. Closing portion; 5. First closing rod; 6. First closing sleeve; 7. First closing tube; 8. First abutting projection; 9. Second closing rod; 10. Second closing sleeve; 11. Second closing tube; 12. Second abutting projection; 13. Third closing rod; 14. First closing plate; 15. Positioning cylinder; 16. Third abutting projection; 17. Boss; 18. Flow port. Detailed Description of the Invention

[0035] The following is combined with the attached Figures 1-3A further detailed description of the present application is provided.

[0036] Embodiment 1: Embodiment 1 of the present application discloses a novel check valve. Refer to Figure 1 , the novel check valve includes a valve seat 1, the valve seat 1 can be connected to a pipeline to enable the pipeline to achieve the function of unidirectional medium flow. An abutting portion 2 is fixed inside the valve seat 1 by bonding or clamping. A protrusion is fixed to the side wall of the abutting portion 2 by integral molding. After the abutting portion 2 is connected to the valve seat 1, the end face of the valve seat 1 abuts against the protrusion end face of the side wall of the abutting portion 2, which is convenient for restricting the position of the abutting portion 2 and also convenient for the disassembly of the abutting portion 2. At the same time, a valve core seat 3 is fixed inside the valve seat 1 by bonding or clamping. A closing portion 4 is provided on the valve core seat 3. The closing portion 4 can contact the abutting portion 2 to close the abutting portion 2, so that the liquid in the valve seat 1 cannot flow. The abutting portion 2 is hollow. The closing portion 4 can contact or separate from the abutting portion 2 under the impact of the medium. At the same time, a boss 17 is fixed inside the valve seat 1 by integral molding. The end face of the valve core seat 3 abuts against the end face of the boss 17. The boss 17 plays a limiting role on the valve core seat 3, reducing the possibility of the valve core seat 3 shifting in position. At the same time, the medium in the valve seat 1 moves along the direction from the valve core seat 3 to the boss 17, further enhancing the stability of the valve core seat 3; a flow port 18 is provided on the valve core seat 3, and the flow port 18 penetrates the valve core seat 3 along the axis direction of the valve core seat 3 to facilitate the flow of the medium in the valve seat 1.

[0037] Refer to Figure 1 , the closing portion 4 includes a first closing rod 5 and a first closing sleeve 6. The first closing rod 5 is fixed to the valve core seat 3 by bonding or clamping, and the first closing rod 5 is coaxially arranged with the valve core seat 3. The first closing sleeve 6 is hollow, and a first closing tube 7 is fixed to the inner side wall of the first closing sleeve 6 by integral molding. The first closing rod 5 passes through the first closing tube 7, and there is a certain gap between the outer side wall of the first closing rod 5 and the inner side wall of the first closing tube 7 to facilitate its movement, so that the first closing sleeve 6 can slide along the axis direction of the first closing rod 5 on the first closing rod 5 driven by the first closing tube 7. The first closing sleeve 6 is coaxially arranged with the first closing rod 5. At the same time, a first abutting protrusion 8 is fixed to the inner side wall of the abutting portion 2 by integral molding. The side wall of the first closing sleeve 6 is inclined and abuts against the first abutting protrusion 8 to close the abutting portion 2. At the same time, the end face of the first closing sleeve 6 facing the valve core seat 3 is open, which is convenient for the medium flowing in the reverse direction to push the first closing sleeve 6 to move, so as to close the abutting portion 2, thereby enabling the valve seat 1 to achieve unidirectional flow.

[0038] Embodiment 2: The difference between Embodiment 2 of the present application and Embodiment 1 is that, refer to Figure 2, the closing part 4 includes a second closing rod 9 and a second closing sleeve 10. The second closing rod 9 is fixed to the valve core seat 3 by bonding or clamping, and the second closing rod 9 is coaxially arranged with the valve core seat 3. The second closing sleeve 10 is plate-shaped, and a second closing tube 11 is fixed to the end face of the second closing sleeve 10 by integral molding. The second closing tube 11 is coaxially arranged with the second closing sleeve 10. The second closing tube 11 is used to pass through the second closing rod 9, and the outer side wall of the second closing rod 9 is close to the inner side wall of the second closing tube 11, and a certain gap is reserved between the two for its movement. The second closing tube 11 can slide along the axis direction of the second closing rod 9, thereby driving the second closing sleeve 10 to move. The end face of the abutting part 2 facing the valve core seat 3 is fixed with a second abutting protrusion 12 by integral molding, and the second abutting protrusion 12 abuts against the end face of the second closing sleeve 10, thereby closing the abutting part 2. When the medium flows from the abutting part 2 to the valve core seat 3, since the second closing sleeve 10 can slide on the second closing rod 9 without restriction, the medium can flow through. When the medium flows from the valve core seat 3 to the abutting part 2, under the action of the second abutting protrusion 12, the medium cannot flow.

[0039] Embodiment 3: The difference between Embodiment 3 of the present application and Embodiment 1 is as follows. Refer to Figure 3 , the closing part 4 includes a third closing rod 13 and a first closing plate 14. The third closing rod 13 is fixed to the end face of the first closing plate 14 by integral molding, and the third closing rod 13 is coaxially arranged with the first closing plate 14. The third closing rod 13 is slidably arranged in the valve core seat 3. At the same time, a positioning cylinder 15 is fixed to the valve core seat 3 by integral molding. The positioning cylinder 15 is coaxially arranged with the valve core seat 3. The third closing rod 13 passes through the positioning cylinder 15. At the same time, the outer side wall of the third closing rod 13 is close to the inner side wall of the positioning cylinder 15, and a certain gap is reserved between the two for its movement. The third closing rod 13 can drive the first closing plate 14 to move when sliding in the positioning cylinder 15. The positioning cylinder 15 also plays a role in positioning the third closing rod 13, reducing the possibility of the sliding position of the third closing rod 13 deviating. The end face of the abutting part 2 is fixed with a third abutting protrusion 16 by integral molding. The third abutting protrusion 16 abuts against the end face of the first closing plate 14. When the medium flows from the abutting part 2 to the valve core seat 3, since the third closing rod 13 can slide on the positioning cylinder 15 without restriction, the medium can flow through. When the medium flows from the valve core seat 3 to the abutting part 2, under the action of the third abutting protrusion 16 and the first closing plate 14, the medium cannot flow.

[0040] The implementation principle of a new type of one-way valve in the embodiment of the present application is as follows: When the medium flows from the abutting part 2 to the valve core seat 3, since the closing part 4 can slide without restriction, the medium can flow through. When the medium flows from the valve core seat 3 to the abutting part 2, under the action of the abutting part 2 and the closing part 4, the medium cannot flow, realizing the one-way flow of the valve seat 1.

[0041] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A new type of one-way valve, characterized by: The valve seat (1) comprises a valve seat (1), an abutting portion (2) is fixed inside the valve seat (1), a valve core seat (3) is fixed inside the valve seat (1), a closing portion (4) is arranged on the valve core seat (3), and the closing portion (4) contacts the abutting portion (2) to close the inside of the valve seat (1).

2. The novel one-way valve according to claim 1 is characterized in that: The closing portion (4) comprises a first closing rod (5) and a first closing sleeve (6); the first closing rod (5) is fixed to the valve core seat (3); the first closing sleeve (6) is hollow and has a first closing tube (7) fixed inside for passing the first closing rod (5).

3. The novel one-way valve according to claim 2 is characterized in that: A first abutment protrusion (8) is fixed to the inner side wall of the abutment portion (2), and the side wall of the first sealing sleeve (6) is arranged in an inclined manner and abuts against the first abutment protrusion (8).

4. The novel one-way valve according to claim 1 is characterized in that: The closing portion (4) comprises a second closing rod (9) and a second closing sleeve (10); the second closing rod (9) is fixed to the valve core seat (3); the second closing sleeve (10) is plate-shaped and a second closing tube (11) for passing the second closing rod (9) is fixed on the end surface of the second closing sleeve (10).

5. The novel one-way valve according to claim 4 is characterized in that: A second abutment protrusion (12) is fixed to the end surface of the abutment portion (2), and the second abutment protrusion (12) abuts against the end surface of the second sealing sleeve (10).

6. The novel one-way valve according to claim 1 is characterized in that: The closing portion (4) comprises a third closing rod (13) and a first closing plate (14); the third closing rod (13) is fixed to the first closing plate (14); and the third closing rod (13) is slidably disposed on the valve core seat (3).

7. The novel one-way valve according to claim 6 is characterized in that: A positioning cylinder (15) for positioning the third closing rod (13) is fixed on the valve core seat (3).

8. The novel one-way valve according to claim 6 is characterized in that: A third abutting protrusion (16) is fixed to the end surface of the abutting portion (2), and the third abutting protrusion (16) abuts against the first closing plate (14).

9. The novel one-way valve according to any one of claims 1 to 8, characterized in that: A boss (17) is fixed inside the valve seat (1), and the end surface of the valve core seat (3) abuts against the end surface of the boss (17).

10. The novel one-way valve according to any one of claims 1 to 8, characterized in that: The valve core seat (3) is provided with a flow opening (18).

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