One-way valve with novel positioning structure

Abstract

The utility model relates to a one-way valve with a novel positioning structure, which comprises a valve seat with a through channel at the center, and a valve port at one end of the channel; the valve sleeve is fixedly connected to one end of the valve seat, and a center hole of the valve sleeve and the valve port are coaxially arranged; the valve element is movably installed on the valve sleeve, and the moving direction of the valve element is parallel to the center line of the valve sleeve; the valve sleeve is directly connected to the end of the valve seat, a traditional structure that the valve seat and the valve sleeve are connected respectively is replaced, the concentricity of the valve seat and the valve sleeve can be effectively improved, the problem that the concentricity becomes poor in the welding process of the valve seat and external parts is solved, the positioning effect of the valve sleeve is improved, effective sealing is achieved when the valve element works, and the service life of the valve element is prolonged. And the problem of liquid leakage is avoided.

Description

Technical Field

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

[0002] A one-way valve is a valve in a fluid control system that allows fluid to flow in one direction only and prevents reverse flow. This valve is usually used in hydraulic systems, pneumatic systems, piping systems, etc. to ensure that the fluid flows in the predetermined direction and prevent backflow or reverse flow. Figure 6 As shown, it is a structural diagram of a one-way valve in the prior art, wherein a valve seat and a valve sleeve are respectively installed at both ends of the inner side of the valve body, and the valve core sleeve is arranged on the valve sleeve, so as to realize the on-off effect of the one-way valve when moving to different directions.

[0003] However, the above scheme still has certain defects in actual operation, mainly because the valve seat and the valve sleeve are separated from each other and are fixed to the valve body respectively. Since the two are fixed to the valve body by welding, after the valve seat and the valve body are welded and fixed, and the valve sleeve and the valve body are welded and fixed, the valve seat and the valve sleeve will be deformed to a certain extent, so that the concentricity of the valve seat and the valve sleeve cannot meet the actual requirements, which eventually leads to leakage after the valve core is closed, affecting the operation of the one-way valve. In addition, the valve seat is fixed to the valve body by welding. When used for a long time or in harsh working conditions, the weld position will be broken, affecting the stable connection of the valve seat inside the valve body. Utility Model Content

[0004] In order to solve the problems of poor concentricity between the valve sleeve and the valve seat after assembly and unstable installation of the valve seat proposed in the above background technology, the present application provides a one-way valve with a novel positioning structure.

[0005] The one-way valve with a novel positioning structure provided in the present application adopts the following technical solution:

[0006] A one-way valve with a novel positioning structure comprises:

[0007] A valve seat having a through passage at its center and a valve port at one end of the passage;

[0008] The valve sleeve is fixedly connected to one end of the valve seat, and its center hole is coaxially arranged with the valve port;

[0009] The valve core is movably mounted on the valve sleeve, and the moving direction is parallel to the center line of the valve sleeve.

[0010] By adopting the above technical solution, the valve sleeve can be directly fixedly connected to the valve seat, so that when the valve seat and the valve body are welded, the concentricity between the valve seat and the valve sleeve will not be deteriorated, and the valve core can fit tightly with the valve port, avoiding leakage during use.

[0011] Optionally, the valve sleeve comprises:

[0012] A plurality of connecting rods, one end of which is fixed on the valve seat and the other end of which extends away from the valve seat;

[0013] A connecting seat, fixed to an end of the connecting rod away from the valve seat;

[0014] The sleeve has one end fixed at the center of the connecting seat and the other end extending toward the valve port.

[0015] By adopting the above technical solution, the connecting rod is used as a connecting piece to achieve the connection between the connecting seat and the valve seat, and then the sleeve is fixed at the center of the connecting seat, so that the valve sleeve acts on the valve seat as a whole, avoiding the problem of deformation caused by welding.

[0016] Optionally, the sleeve is integrally connected to the connecting seat.

[0017] By adopting the above technical solution, the sleeve and the connecting seat can be integrally formed, which can better meet the concentricity requirement between the valve seat and the valve sleeve.

[0018] Optionally, a central shaft is installed at the inner center position of the valve core, and the central shaft is slidably connected in the central hole of the valve sleeve.

[0019] By adopting the above technical solution, the central shaft can be slidably connected in the valve sleeve to guide the valve core.

[0020] Optionally, the valve core is a cup-shaped structure, and its outer wall has a cylindrical section close to the cup mouth and a conical section close to the cup bottom. The diameter of the conical section gradually decreases from the cup mouth to the cup bottom, and the minimum diameter of the conical section is smaller than the diameter of the valve mouth.

[0021] By adopting the above technical solution, when the valve core moves to the extreme position close to the valve port, its conical section can be in contact with the edge of the valve port, thereby achieving the sealing effect of the one-way valve.

[0022] Optionally, a plurality of through holes are provided on the outer wall of the cylindrical section of the valve core.

[0023] By adopting the above technical solution, the fluid can flow through the through hole to the outside of the one-way valve as quickly as possible in the valve opening state, thereby increasing the flow rate of the fluid.

[0024] Optionally, it also includes a valve body, which has a through passage, and the valve seat is fixedly installed in the valve body.

[0025] By adopting the above technical solution, the valve body is used to connect the overall structure consisting of the valve seat, the valve sleeve and the valve core. When connecting the pipeline, it is only necessary to connect the valve body and the pipeline.

[0026] Optionally, the outer wall of the valve seat has an annular groove that is concavely arranged.

[0027] Optionally, it also includes a connecting pipe, the middle part of which is clamped in the annular groove formed on the outer wall of the valve seat.

[0028] By adopting the above technical solution, the valve seat is embedded in the connecting pipe, so that a stable connection between the connecting pipe and the valve seat can be achieved.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] The utility model discloses directly connects the valve sleeve to the end position of the valve seat, replaces the traditional structure in which the valve seat and the valve sleeve are connected separately, can effectively improve the concentricity of the valve seat and the valve sleeve, avoids the problem of concentricity deterioration during the welding process of the valve seat and external parts, improves the positioning effect of the valve sleeve, and further realizes effective sealing of the valve core when working, and avoids leakage problems.

[0031] The utility model adopts a structure in which an annular groove is arranged on the outer wall of the valve seat, which can effectively achieve a sealing engagement effect between the connecting pipe and the valve seat when docking with an external connecting pipe, and has the advantages of a more stable connecting structure and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the utility model where the valve seat is installed in the valve body.

[0033] Figure 2 It is a structural diagram of the connection between the valve seat, valve sleeve and valve core of the utility model.

[0034] Figure 3 It is a three-dimensional structural diagram of the connection between the valve seat, valve sleeve and valve core of the utility model;

[0035] Figure 4 It is a structural diagram of the valve core of the utility model;

[0036] Figure 5 This is a structural diagram of the utility model valve seat installed in the connecting pipe;

[0037] Figure 6 It is a structural diagram of a one-way valve in the prior art.

[0038] Explanation of the reference numerals: 1. valve seat; 101. valve port; 102. annular groove; 2. valve core; 201. center axis; 202. cylindrical section; 2021. through hole; 203. conical section; 3. valve sleeve; 301. connecting rod; 302. connecting seat; 303. sleeve; 4. valve body; 5. connecting pipe. DETAILED DESCRIPTION

[0039] The present application is further described in detail below in conjunction with the accompanying drawings.

[0040] The embodiment of the present application discloses a one-way valve with a novel positioning structure, comprising:

[0041] The valve seat 1 has a through passage in the center, one end of the passage has a valve port 101, and the valve seat 1 is a cylindrical structure as a whole;

[0042] The valve sleeve 3 is fixedly connected to one end of the valve seat 1, and its central hole is coaxially arranged with the valve port 101;

[0043] The valve core 2 is movably mounted on the valve sleeve 3 , and the moving direction is parallel to the center line of the valve sleeve 3 .

[0044] Wherein, the valve sleeve 3 comprises:

[0045] A plurality of connecting rods 301, one end of which is fixed on the valve seat 1, and the other end extends in a direction away from the valve seat 1. In this example, there are two connecting rods 301, which are evenly distributed around the center line of the valve sleeve 3. A plurality of connecting rods 301 can also be provided according to actual needs, and the main purpose is to fix one end on the valve seat 1;

[0046] The connecting seat 302 is fixed to the end of the connecting rod 301 away from the valve seat 1. In this example, the connecting seat 302 is a disc-shaped structure as a whole;

[0047] The sleeve 303 has one end fixed at the center of the connecting seat 302 and the other end extending toward the direction close to the valve port 101. In this example, the sleeve 303 is integrally connected to the connecting seat 302, and one end of the sleeve 303 extends toward the direction of the valve port 101 for installing the valve core 2 so that the valve core 2 is close to the valve port 101, thereby achieving the on-off effect of the one-way valve.

[0048] Specifically, a central axis 201 is installed at the inner center position of the valve core 2, and the central axis 201 is slidably connected in the central hole of the valve sleeve 3, wherein the central axis 201 and the central hole of the valve sleeve 3 can be clearance-fitted to achieve relative movement of the central axis 201 and the valve sleeve 3 while ensuring accuracy.

[0049] Specifically, the valve core 2 is a cup-shaped structure, and its outer wall has a cylindrical section 202 near the cup mouth and a conical section 203 near the cup bottom. The diameter of the conical section 203 gradually decreases from the cup mouth to the cup bottom. The minimum diameter of the conical section 203 is smaller than the diameter of the valve mouth 101. More specifically, a plurality of through holes 2021 are opened on the outer wall of the cylindrical section 202 of the valve core 2. When the valve core 2 moves to the position such as Figure 2 When in the left extreme position shown, it can contact the valve port 101, thereby achieving a sealing effect on the valve port 101.

[0050] In one embodiment, it also includes a valve body 4, which has a through-going passage, and a valve seat 1 is fixedly installed in the valve body 4, wherein the valve seat 1 can be fixed to the inside of the valve body 4 by welding, so that the valve body 4, the valve seat 1, the valve sleeve 3 and the valve core 2 form an integral structure, and the two ends of the valve body 4 serve as installation ends to realize the installation and fixation of the one-way valve.

[0051] In another embodiment, the outer wall of the valve seat 1 has an inwardly concave annular groove 102, and more specifically, it also includes a connecting pipe 5, the middle part of the connecting pipe 5 is clamped in the annular groove 102 opened on the outer wall of the valve seat 1; that is, during assembly, the middle part of the connecting pipe 5 can be connected to the valve seat 1 in a sealed clamping manner, which is suitable for occasions where the connecting pipe 5 is long and inconvenient to weld.

[0052] This one-way valve with a novel positioning structure adopts a method of directly connecting the valve sleeve 3 to the valve seat 1, which effectively ensures the concentricity requirement between the valve seat 1 and the valve sleeve 3, thereby preventing the valve core 2 from being eccentric when moving, and preventing leakage when the one-way valve is working.

[0053] 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 with a new positioning structure, characterized in that: include: A valve seat (1) having a through channel at its center and a valve port (101) at one end of the channel; A valve sleeve (3) is fixedly connected to one end of the valve seat (1), and a central hole thereof is coaxially arranged with the valve port (101); The valve core (2) is movably mounted on the valve sleeve (3), and the moving direction is parallel to the center line of the valve sleeve (3).

2. A one-way valve with a novel positioning structure according to claim 1, characterized in that: The valve sleeve (3) comprises: A plurality of connecting rods (301), one end of which is fixed to the valve seat (1) and the other end of which extends in a direction away from the valve seat (1); A connecting seat (302) is fixed to an end of the connecting rod (301) away from the valve seat (1); The sleeve (303) has one end fixed at the center of the connecting seat (302) and the other end extending in a direction close to the valve port (101).

3. A one-way valve with a novel positioning structure according to claim 2, characterized in that: The sleeve (303) and the connecting seat (302) are integrally connected.

4. A one-way valve with a novel positioning structure according to claim 1, characterized in that: A central shaft (201) is installed at the inner center position of the valve core (2), and the central shaft (201) is slidably connected in the central hole of the valve sleeve (3).

5. A one-way valve with a novel positioning structure according to claim 1, characterized in that: The valve core (2) is a cup-shaped structure, and has a cylindrical section (202) near the cup mouth and a conical section (203) near the cup bottom at its outer wall. The diameter of the conical section (203) gradually decreases from the cup mouth to the cup bottom, and the minimum diameter of the conical section (203) is smaller than the diameter of the valve mouth (101).

6. A one-way valve with a novel positioning structure according to claim 5, characterized in that: A plurality of through holes (2021) are provided on the outer wall of the cylindrical section (202) of the valve core (2).

7. A one-way valve with a novel positioning structure according to claim 1, characterized in that: It also comprises a valve body (4), wherein the valve body (4) has a through-going passage, and the valve seat (1) is fixedly mounted in the valve body (4).

8. A one-way valve with a novel positioning structure according to claim 1, characterized in that: The outer wall of the valve seat (1) is provided with an annular groove (102) which is concavely arranged.

9. A one-way valve with a novel positioning structure according to claim 1, characterized in that: It also includes a connecting pipe (5), the middle portion of which is clamped in an annular groove (102) formed on the outer wall of the valve seat (1).

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