Hydraulic one-way valve with oil leakage prevention structure

Abstract

The hydraulic one-way valve with the oil leakage prevention structure comprises an installation valve body, a pipeline connector is arranged on the surface of the installation valve body, and a liquid inlet is formed in the side surface of one end of the installation valve body. According to the hydraulic one-way valve with the oil leakage prevention structure, a second sealing column and a limiting valve element are arranged, when the hydraulic one-way valve works, liquid is guided in through a liquid inlet, the liquid pushes the first sealing column and the limiting valve element to slide, and the liquid conveniently flows into a liquid outlet from openings of the limiting valve element and the second sealing column to flow after flowing into an installation valve body; then, when no liquid enters, a spring on the surface of a positioning column pushes a limiting valve element to slide and reset, so that a liquid inlet is blocked, and when liquid of a liquid outlet flows back, a second sealing column and the limiting valve element are pushed, so that openings of the second sealing column and the limiting valve element abut against the surface of a leakage-proof blocking block, and liquid backflow is prevented; therefore, the device achieves the purpose of single circulation, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to a hydraulic one-way valve provided with an oil leakage prevention structure. 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. It is commonly known as a one-way valve. A one-way valve is also called a check valve or a non-return valve. It is used in hydraulic systems to prevent oil from flowing in the opposite direction, or in pneumatic systems to prevent compressed air from flowing in the opposite direction. There are two types of one-way valves: straight-through and right-angle. Straight-through one-way valves are installed on the pipeline with threaded connections. Right-angle one-way valves are available in three types: threaded, plate and flange. One-way valves are also called check valves or non-return valves. They are used in hydraulic systems to prevent oil from flowing in the opposite direction, or in pneumatic systems to prevent compressed air from flowing in the opposite direction.

[0003] The structure of a one-way valve generally includes a body with a cylindrical through hole inside, a valve core and a spring both arranged in the body, the inner side walls at both ends of the body respectively have an annular sealing surface and an annular convex shoulder, the valve core is located between the sealing surface and the convex shoulder, the spring is located between the valve core and the convex shoulder and can exert a force on the valve core, so that the valve core is pressed against the sealing surface to form a seal, thereby blocking the passage in the body. When the existing one-way valve is working, the spring pushes the valve core to move toward the sealing surface, and the valve core rubs against each other after moving relative to the sealing surface, causing wear between the valve core and the sealing surface, reducing the sealing effect and thus reducing practicality. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic one-way valve with an anti-oil leakage structure to solve the problem that when the existing one-way valve mentioned in the above background technology is working, the spring pushes the valve core to move toward the sealing surface, and the valve core rubs against each other after moving relative to the sealing surface, causing wear between the valve core and the sealing surface, thereby reducing the sealing effect and thus reducing the practicality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic one-way valve with an anti-oil leakage structure, comprising a mounting valve body, a pipeline interface is arranged on the surface of the mounting valve body, a liquid inlet is provided on the side surface of one end of the mounting valve body, and a liquid outlet is provided on the side surface of the other end of the mounting valve body, a cavity is provided inside the mounting valve body, a positioning column is fixedly connected to the inner wall of the cavity of the mounting valve body, a limiting valve core is installed on the outer surface of the positioning column, a first sealing column is fixedly connected to the lower end side surface of the limiting valve core, a second sealing column is fixedly connected to the upper end side surface of the limiting valve core, an anti-leakage block is fixedly provided on the inner wall of the cavity of the mounting valve body, a first piston column is slidably connected to the inner wall of the cavity of the mounting valve body, and an auxiliary sealing mechanism is provided inside the mounting valve body, which drives the first magnet to repel the second magnet and the second piston column to slide to fill air into the auxiliary airbag for expansion and sealing through a limiting slide plate.

[0006] Preferably, the liquid inlet and the liquid outlet are respectively communicated with the cavity where the valve body is installed, and the liquid inlet and the liquid outlet are not concentrically arranged.

[0007] By adopting the above technical solution, the liquid inlet and the liquid outlet are connected with the cavity where the valve body is installed, so that the liquid can flow easily.

[0008] Preferably, the positioning column and the limit valve core are in sliding connection, and a spring is connected between the positioning column and the limit valve core, and the limit valve core and the mounting valve body are in sliding connection.

[0009] By adopting the above technical solution, the movement is facilitated by the sliding connection between the positioning column and the limit valve core, and the resetting is facilitated by the spring between the positioning column and the limit valve core.

[0010] Preferably, the first sealing column is arranged corresponding to the liquid inlet, the second sealing column is arranged corresponding to the liquid outlet, and an opening is arranged between the second sealing column and the mounting valve body.

[0011] By adopting the above technical solution, the liquid inlet is sealed by the first sealing column, and the liquid outlet is sealed by the second sealing column.

[0012] Preferably, an elastic sealing pad is provided on the surface of the leak-proof blocking block, the cavity of the sealing pad of the leak-proof blocking block is communicated with the first piston column, and a spring is connected between the first piston column and the mounting valve body.

[0013] By adopting the above technical solution, the first piston column pushes the air toward the elastic sealing pad of the anti-leakage block through the sliding of the first piston column.

[0014] Preferably, the auxiliary sealing mechanism includes a limiting slide, a first magnet is fixed to the upper surface of one end of the limiting slide, a second piston column is slidably connected to the inside of the mounting valve body, a second magnet is fixed to the lower surface of the second piston column, and an auxiliary air bag is fixed to the inner wall of the liquid outlet.

[0015] By adopting the above technical solution, the limiting slide drives the first magnet to slide closer to the second magnet through the auxiliary sealing mechanism.

[0016] Preferably, the magnetic poles of the first magnet and the second magnet facing each other are the same, a spring is connected between the second piston column and the mounting valve body, the second piston column is connected to the auxiliary airbag, and the auxiliary airbag is annular in design.

[0017] By adopting the above technical solution, the first magnet repels the second magnet, so that the second magnet drives the second piston column to slide.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the hydraulic one-way valve provided with an anti-leakage oil structure:

[0019] 1. A second sealing column and a limit valve core are provided, so that when the device is working, liquid is introduced through the liquid inlet, so that the liquid pushes the first sealing column and the limit valve core to slide, so that the liquid flows into the valve body after the valve body is installed, and then flows into the liquid outlet from the opening of the limit valve core and the second sealing column. Subsequently, when there is no liquid inflow, the limit valve core is pushed to slide and reset by the spring on the surface of the positioning column, thereby blocking the liquid inlet. At the same time, when the liquid at the liquid outlet flows back, it will push the second sealing column and the limit valve core, so that the openings of the second sealing column and the limit valve core are against the surface of the anti-leakage block, thereby preventing the liquid from flowing back, so that the device achieves the purpose of single-way flow and improves the sealing effect;

[0020] 2. A first piston column and a leak-proof plugging block are provided, so that when the device is working, the first piston column is pushed by the limit valve core, so that the first piston column pushes air into the cavity of the elastic sealing pad of the leak-proof plugging block after sliding, so that the elastic sealing pad of the leak-proof plugging block expands, which is convenient for effectively fitting the opening of the limit valve core, thereby further improving the sealing performance during backflow prevention and improving the practicality of the device;

[0021] 3. A second piston column and an auxiliary air bag are provided. When the device is working, the first magnet repels the second magnet, so that the second magnet drives the second piston column to slide and pushes air into the auxiliary air bag, so that the auxiliary air bag expands and fits and seals the second sealing column, thereby improving the sealing performance of the second sealing column. When liquid flows in from the liquid inlet, the limit valve core drives the limit slide plate and the first magnet to move, so that the second magnet is not repelled, and the spring will push the second piston column to slide and no longer inflate the auxiliary air bag, thereby facilitating the movement of the second sealing column, reducing wear and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the valve body and the liquid outlet of the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the valve body and the liquid inlet of the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection between the limit valve core and the first sealing column of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the valve body and the positioning column of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the valve body and the liquid inlet of the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the connection between the limiting slide plate and the first magnet of the utility model.

[0028] In the figure: 1. Install the valve body; 2. Liquid inlet; 3. Liquid outlet; 4. Positioning column; 5. Limit valve core; 6. First sealing column; 7. Second sealing column; 8. Anti-leakage block; 9. First piston column; 10. Limit slide plate; 11. First magnet; 12. Second piston column; 13. Second magnet; 14. Auxiliary airbag. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6The utility model provides a technical solution: a hydraulic one-way valve with an anti-leakage structure, comprising an installation valve body 1, a liquid inlet 2, a liquid outlet 3, a positioning column 4, a limit valve core 5, a first sealing column 6, a second sealing column 7, an anti-leakage block 8, a first piston column 9, a limit slide plate 10, a first magnet 11, a second piston column 12, a second magnet 13 and an auxiliary air bag 14, the installation valve body 1, a pipeline interface is arranged on its surface, the liquid inlet 2 and the liquid outlet 3 are respectively connected to the cavity of the installation valve body 1, and the liquid inlet 2 and the liquid outlet 3 are not concentrically arranged, the positioning column 4 and the limit valve core 5 are slidably connected, and a spring is connected between the positioning column 4 and the limit valve core 5, and the limit valve core 5 is slidably connected to the installation valve body 1. When using the device, the installation valve body 1 is firstly connected to the pipeline, so that the liquid inlet 2 introduces liquid, so that the liquid pushes the first sealing column 6, the limit valve core 5 and the second sealing column 7 to slide, and then the liquid enters the cavity of the installation valve body 1.

[0031] A liquid inlet 2 is provided on the side surface of one end of the mounting valve body 1, and a liquid outlet 3 is provided on the side surface of the other end of the mounting valve body 1. A cavity is provided inside the mounting valve body 1, and a positioning column 4 is fixedly connected to the inner wall of the cavity of the mounting valve body 1. The first sealing column 6 is provided corresponding to the liquid inlet 2, and the second sealing column 7 is provided corresponding to the liquid outlet 3, and an opening is provided between the second sealing column 7 and the mounting valve body 1. After the liquid enters the cavity of the mounting valve body 1, the opening of the limit valve core 5 is moved away from the leak-proof block 8. As the liquid level increases, the liquid flows into the opening of the limit valve core 5, and the opening of the second sealing column 7 facilitates the liquid to be introduced into the liquid outlet 3 for circulation. When not working, the spring on the surface of the positioning column 4 pushes the limit valve core 5, the first sealing column 6 and the second sealing column 7 to slide and reset.

[0032] A limited valve core 5 is installed on the outer surface of the positioning column 4, a first sealing column 6 is fixedly connected to the lower end side surface of the limited valve core 5, a second sealing column 7 is fixedly connected to the upper end side surface of the limited valve core 5, a leak-proof block 8 is fixedly arranged on the inner wall of the cavity of the mounting valve body 1, a first piston column 9 is slidably connected to the inner wall of the cavity of the mounting valve body 1, an elastic sealing pad is arranged on the surface of the leak-proof block 8, the cavity of the sealing pad of the leak-proof block 8 is connected to the first piston column 9, and a spring is connected between the first piston column 9 and the mounting valve body 1 When the limit valve core 5 is reset, its opening covers the anti-leakage block 8, and at the same time, the limit valve core 5 pushes the first piston column 9 to slide, so that the first piston column 9 pushes the air into the cavity of the elastic sealing pad of the anti-leakage block 8, so that the sealing pad of the anti-leakage block 8 expands, thereby fitting the opening of the limit valve core 5, thereby improving the sealing effect of the limit valve core 5, and when the liquid refluxes at the liquid outlet 3, the liquid will push the second sealing column 7 and the limit valve core 5 not to move, so that the liquid will not flow, thereby ensuring the one-way flow effect of the device.

[0033] An auxiliary sealing mechanism is arranged inside the installation valve body 1, which drives the first magnet 11 to repel the second magnet 13 and the second piston column 12 to slide through the limiting slide 10 to fill air into the auxiliary air bag 14 for expansion and sealing. The auxiliary sealing mechanism includes a limiting slide 10, and the first magnet 11 is fixed to the upper surface of one end of the limiting slide 10. The second piston column 12 is slidably connected to the inside of the installation valve body 1, and the second magnet 13 is fixed to the lower surface of the second piston column 12. The auxiliary air bag 14 is fixed to the inner wall of the liquid outlet 3. The magnetic poles of the first magnet 11 and the second magnet 13 facing each other are the same. A spring is connected between the second piston column 12 and the installation valve body 1, and the second piston column 12 and the auxiliary air bag 14 are connected. The airbag 14 is interconnected, and the auxiliary airbag 14 is of an annular design. When not working, the limit valve core 5 and the limit slide 10 drive the first magnet 11 to approach and repel the second magnet 13, so that the second magnet 13 drives the second piston column 12 to slide and push air into the auxiliary airbag 14, so that the auxiliary airbag 14 expands and fits the surface of the second sealing column 7, thereby improving the sealing effect of the second sealing column 7 and further preventing liquid reflux. When the liquid inlet 2 is filled with liquid, the limit valve core 5 and the limit slide 10 drive the first magnet 11 to no longer repel the second magnet 13, so that the second piston column 12 is pushed by the surface spring to no longer fill air into the auxiliary airbag 14, thereby ensuring the normal movement of the second sealing column 7 and reducing wear.

[0034] Working principle: When using the hydraulic one-way valve with an anti-oil leakage structure, first introduce liquid through the liquid inlet 2, so that the liquid pushes the limit valve core 5, the first sealing column 6 and the second sealing column 7 to slide, and then the liquid enters the cavity of the installation valve body 1, and finally the liquid flows into the liquid outlet 3 from the opening between the limit valve core 5 and the second sealing column 7. When not working, the spring of the positioning column 4 pushes the limit valve core 5 to reset, so that the limit valve core 5 pushes the first piston column 9 to fill air into the sealing gasket of the anti-leakage block 8 for sealing. At the same time, the limit slide plate 10 drives the first magnet 11 to repel the second magnet 13, so that the second magnet 13 drives the second piston column 12 to slide and fill air into the auxiliary air bag 14 to seal the second sealing column 7, thereby increasing the overall practicality.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic one-way valve with an anti-leakage structure, comprising a mounting valve body (1), a surface of which is provided with a pipeline interface, a surface of one end of the mounting valve body (1) is provided with a liquid inlet (2), and a surface of the other end of the mounting valve body (1) is provided with a liquid outlet (3), characterized in that: The installation valve body (1) is provided with a cavity inside, the inner wall of the cavity of the installation valve body (1) is fixedly connected with a positioning column (4), the outer surface of the positioning column (4) is provided with a limit valve core (5), the lower end side surface of the limit valve core (5) is fixedly connected with a first sealing column (6), the upper end side surface of the limit valve core (5) is fixedly connected with a second sealing column (7), the inner wall of the cavity of the installation valve body (1) is fixedly provided with a leak-proof block (8), the inner wall of the cavity of the installation valve body (1) is slidably connected with a first piston column (9), and the interior of the installation valve body (1) is provided with an auxiliary sealing mechanism, which drives the first magnet (11) to repel the second magnet (13) and the second piston column (12) to slide through the limit slide plate (10) to fill air into the auxiliary air bag (14) for expansion and sealing.

2. A hydraulic one-way valve with an oil leakage prevention structure according to claim 1, characterized in that: The liquid inlet (2) and the liquid outlet (3) are respectively communicated with the cavity in which the valve body (1) is installed, and the liquid inlet (2) and the liquid outlet (3) are not arranged concentrically.

3. A hydraulic one-way valve with an oil leakage prevention structure according to claim 1, characterized in that: The positioning column (4) and the limit valve core (5) are in sliding connection, and a spring is connected between the positioning column (4) and the limit valve core (5), and the limit valve core (5) and the mounting valve body (1) are in sliding connection.

4. The hydraulic one-way valve with an anti-oil leakage structure according to claim 1, characterized in that: The first sealing column (6) is arranged corresponding to the liquid inlet (2), the second sealing column (7) is arranged corresponding to the liquid outlet (3), and an opening is arranged between the second sealing column (7) and the mounting valve body (1).

5. The hydraulic one-way valve with an oil leakage prevention structure according to claim 1, characterized in that: An elastic sealing pad is arranged on the surface of the anti-leakage block (8), the cavity of the sealing pad of the anti-leakage block (8) is connected to the first piston column (9), and a spring is connected between the first piston column (9) and the mounting valve body (1).

6. The hydraulic one-way valve with an oil leakage prevention structure according to claim 1, characterized in that: The auxiliary sealing mechanism comprises a limiting slide plate (10), a first magnet (11) is fixed to the upper surface of one end of the limiting slide plate (10), a second piston column (12) is slidably connected to the inside of the mounting valve body (1), a second magnet (13) is fixed to the lower surface of the second piston column (12), and an auxiliary air bag (14) is fixed to the inner wall of the liquid outlet (3).

7. A hydraulic one-way valve with an oil leakage prevention structure according to claim 6, characterized in that: The magnetic poles of the first magnet (11) and the second magnet (13) facing each other are the same, a spring is connected between the second piston column (12) and the mounting valve body (1), the second piston column (12) is connected to the auxiliary air bag (14), and the auxiliary air bag (14) is of an annular design.

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