Rail valve of lifting rod

Abstract

The utility model discloses a lifting rod track valve, the bottom of a C ball is provided with a notch which is in butt joint with the top end of a lower valve rod, the C ball is rotatably connected with the top end of the lower valve rod through a pin shaft, the C ball rotates up and down along the lower valve rod, the inner end part of an upper valve rod is provided with an overturning groove for the top of the C ball to be inserted in, and the overturning groove is provided with an opening. A chute is formed in the end part of the upper valve rod, and a cylindrical pin which is inserted into the chute and slides along the chute is arranged at the top of the ball C; a valve seat is arranged at the inner port of the outlet and is used for sealing the joint between the valve core and the valve body after the valve core is closed; the upper valve rod rotates and moves up and down along the upper mounting opening; after the valve element is closed, the upper valve rod can be further pressed downwards, so that the cylindrical pin moves along the inclined groove, the valve element is pushed to extrude forwards, the valve element and the valve seat are extruded and are attached and butted in parallel, a good sealing effect is achieved, and the leakage phenomenon is not prone to occurring.

Description

Technical Field

[0001] This utility model relates to the field of valve-related technology, specifically a lifting rod track valve. Background Technology

[0002] Since the reform and opening up, the national economy has grown rapidly, and technological innovation and independent innovation have become the mainstream of domestic industrial development. my country's industry is gradually developing towards intensive, energy-saving, emission-reducing, and low-carbon directions. Ball valves, as a common type of valve, have advantages such as compact structure, light weight, low fluid resistance and loss, and convenient maintenance and operation, and are widely used in media transportation pipelines in various fields; however, existing ball valves have the defect of poor sealing performance after the valve core is closed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a lifting rod track valve.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a lifting rod track valve, including a valve body with a mounting cavity, a lower mounting port at the bottom of the valve body, an upper mounting port at the top of the valve body, a lower valve rod rotatably disposed in the lower mounting port, an upper valve rod installed in the upper mounting port, a C-ball located in the mounting cavity between the upper valve rod and the lower valve rod, and a valve core installed on the outside of the C-ball;

[0006] The bottom of the C-ball is provided with a notch that mates with the top of the lower valve stem, and the C-ball is rotatably connected to the top of the lower valve stem via a pin. The C-ball rotates up and down along the lower valve stem. The inner end of the upper valve stem is provided with a flip groove for the top of the C-ball to be inserted into, and the end of the upper valve stem is provided with an inclined groove. The top of the C-ball is provided with a cylindrical pin that is inserted into the inclined groove and slides along the inclined groove.

[0007] The valve body is provided with an inlet and an outlet that communicate with the mounting cavity, and the inner port of the outlet is provided with a valve seat, which is used to seal the connection between the valve core and the valve body after the valve core is closed; the upper valve stem rotates and moves up and down along the upper mounting port.

[0008] As a preferred embodiment of this utility model, the lower mounting port is provided with a bushing for mounting the lower valve stem and the lower mounting port, and the outer end of the lower mounting port is provided with a pressure cap for closing the lower mounting port.

[0009] As a preferred embodiment of this utility model, a first sealing ring is provided between the gland and the valve body.

[0010] As a preferred embodiment of this utility model, a pressure tube is provided inside the upper mounting port, and a sealing packing layer is provided inside the pressure tube for sealing the upper mounting port and the pressure tube. A second sealing ring is provided between the pressure tube and the valve body.

[0011] As a preferred embodiment of this utility model, the inner end of the upper valve stem is provided with an anti-detachment block, and the inside of the pressure tube is provided with an inwardly recessed anti-detachment cavity that moves up and down with the anti-detachment block.

[0012] As a preferred embodiment of this utility model, the outlet is provided with an installation groove, and the valve seat is fixed in the installation groove by a pressure plate.

[0013] The beneficial effects of this utility model are:

[0014] This type of lifting rod track valve has a C-ball installed between the upper and lower valve stems, and a valve core mounted on the C-ball. The rotation of the upper valve stem drives the C-ball to rotate, which in turn drives the valve core to rotate, thus achieving the opening and closing function. A cylindrical pin is provided at the top of the C-ball, which is inserted into an inclined groove and slides along the groove. The C-ball rotates up and down along the lower valve stem. After the valve core closes, it can further press down on the upper valve stem, causing the cylindrical pin to move along the inclined groove, thus pushing the valve core forward and pressing it against the valve seat for parallel and close contact, thereby achieving a good sealing effect and preventing leakage.

[0015] In this type of lifting rod track valve, an anti-detachment block is provided at the inner end of the upper valve rod, and the inside of the pressure tube is provided with an inwardly recessed anti-detachment cavity that moves up and down with the anti-detachment block. In this way, the upper valve rod is prevented from flying out under the cooperation of the anti-detachment block and the anti-detachment cavity. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a structural schematic diagram of a lifting rod track valve according to this utility model;

[0018] Figure 2 This is a schematic diagram of the valve body of a lifting rod track valve according to this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the C-ball of a lifting rod track valve according to this utility model;

[0020] Figure 4 This is a schematic diagram of the inclined groove structure of a lifting rod track valve according to this utility model.

[0021] In the diagram: 1. Valve body; 2. Mounting cavity; 3. Lower mounting port; 4. Upper mounting port; 5. Lower valve stem; 6. Upper valve stem; 7. C-ball; 8. Valve core; 9. Notch; 10. Pin; 11. Tilting groove; 12. Inclined groove; 13. Cylindrical pin; 14. Inlet; 15. Outlet; 16. Valve seat; 17. Gland; 18. Pressure tube; 19. Sealing packing layer; 20. Anti-detachment block; 21. Anti-detachment cavity; 22. Mounting groove; 23. First sealing ring; 24. Second sealing ring; 25. Bushing; 26. Pressure plate. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a lifting rod track valve, including a valve body 1 with a mounting cavity 2, and a lower mounting port 3 at the bottom of the valve body 1, and an upper mounting port 4 at the top of the valve body 1. A lower valve rod 5 is provided in the lower mounting port 3 and rotated along the lower mounting port 3, and an upper valve rod 6 is installed in the upper mounting port 4. A C-ball 7 located in the mounting cavity 2 is installed between the upper valve rod 6 and the lower valve rod 5, and a valve core 8 is installed on the outside of the C-ball 7.

[0024] The bottom of the C-ball 7 is provided with a notch 9 that aligns with the top of the lower valve stem 5, and the C-ball 7 is rotatably connected to the top of the lower valve stem 5 via a pin 10. The C-ball 7 rotates up and down along the lower valve stem 5. The inner end of the upper valve stem 6 is provided with a flip groove 11 for the top of the C-ball 7 to be inserted into, and the end of the upper valve stem 6 is provided with a sloping groove 12. The top of the C-ball 7 is provided with a cylindrical pin 13 that is inserted into the sloping groove 12 and slides along the sloping groove 12.

[0025] The valve body 1 is provided with an inlet 14 and an outlet 15 that communicate with the mounting cavity 2. The inner port of the outlet 15 is provided with a valve seat 16, and the valve seat 16 is used to seal the connection between the valve core 8 and the valve body 1 after the valve core 8 is closed. The upper valve stem 6 rotates and moves up and down along the upper mounting port 4. A ball C7 is installed between the upper valve stem 6 and the lower valve stem 5, and a valve core 8 is installed on the ball C7. The rotation of the upper valve stem 6 drives the ball C7 to rotate, and the rotating ball C7 drives the valve core 8 to rotate, thus achieving the function of opening and closing. A cylindrical pin 13 is provided at the top of the ball C7, which is inserted into the inclined groove 12 and slides along the inclined groove 12. The ball C7 rotates up and down along the lower valve stem 5. After the valve core 8 is closed, the upper valve stem 6 can be further pressed down, so that the cylindrical pin 13 moves along the inclined groove 12, thus pushing the valve core 8 forward and pressing it to fit parallel to the valve seat 16, thereby achieving a good sealing effect and preventing leakage.

[0026] This invention eliminates the need for a valve cavity, thus avoiding dead zones, overpressure, and hazards caused by the contact of internal media. The bottom of the C-ball 7 has a notch 9 that aligns with the top of the lower valve stem 5. The C-ball 7 is rotatably connected to the top of the lower valve stem 5 via a pin 10. The C-ball 7 rotates up and down along the lower valve stem 5. The inner end of the upper valve stem 6 has a rotating groove 11 for the top of the C-ball 7 to insert into, and the end of the upper valve stem 6 has a sloping groove 12. The top of the C-ball 7 has a cylindrical pin 13 that inserts into and slides along the sloping groove 12. This ensures the valve core moves along the set trajectory, increasing sealing and preventing gaps caused by frequent valve opening and closing.

[0027] During the opening of the valve core, the high-speed fluid cleans the debris and adhering substances along the sealing surface in 360 degrees, thus achieving a self-cleaning effect. When the upper valve stem is not pressed down, there is still a micro gap between the valve core and the valve seat, so the high-speed fluid cleans the debris and adhering substances along the sealing surface in 360 degrees.

[0028] The lower mounting port 3 is provided with a bushing 25 for mounting the lower valve stem 5 between the lower mounting port 3 and the lower mounting port 3. The outer end of the lower mounting port 3 is provided with a pressure cap 17 for closing the lower mounting port 3. A first sealing ring 23 is provided between the pressure cap 17 and the valve body 1, which facilitates the installation of the lower valve stem 5, wherein the lower valve stem is convex.

[0029] The upper mounting port 4 is provided with a pressure tube 18, and the pressure tube 18 is provided with a sealing packing layer 19 for sealing between the upper mounting port 4 and the pressure tube 18. A second sealing ring 24 is provided between the pressure tube 18 and the valve body 1, which has a good sealing effect.

[0030] The upper valve stem 6 is provided with an anti-detachment block 20 at its inner end, and the pressure tube 18 is provided with an anti-detachment cavity 21 that is recessed inward and moves up and down with the anti-detachment block 20. In this way, the upper valve stem is prevented from flying out under the combined action of the anti-detachment block and the anti-detachment cavity.

[0031] The outlet 15 is provided with an installation groove 22, and the valve seat 16 is fixed in the installation groove 22 by a pressure plate 26, which facilitates installation.

[0032] During operation, this type of lifting rod track valve has a C-ball 7 installed between the upper valve stem 6 and the lower valve stem 5, and a valve core 8 installed on the C-ball 7. The rotation of the upper valve stem 6 drives the C-ball 7 to rotate, and the rotating C-ball 7 drives the valve core 8 to rotate, thus achieving the function of opening and closing. A cylindrical pin 13 is provided at the top of the C-ball 7, which is inserted into the inclined groove 12 and slides along the inclined groove 12. The C-ball 7 rotates up and down along the lower valve stem 5. After the valve core 8 is closed, it can further press down the upper valve stem 6, so that the cylindrical pin 13 moves along the inclined groove 12, thus pushing the valve core 8 forward and pressing it against the valve seat 16 for parallel and close contact, thereby achieving a good sealing effect and preventing leakage.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting rod track valve, characterized in that, The valve body (1) includes a mounting cavity (2), and the bottom of the valve body (1) is provided with a lower mounting port (3), and the upper part of the valve body (1) is provided with an upper mounting port (4). The lower mounting port (3) is provided with a lower valve rod (5) that is rotatably arranged along the lower mounting port (3), and the upper mounting port (4) is provided with an upper valve rod (6). A C ball (7) located in the mounting cavity (2) is installed between the upper valve rod (6) and the lower valve rod (5), and a valve core (8) is installed on the outside of the C ball (7). The bottom of the C ball (7) is provided with a notch (9) that mates with the top of the lower valve stem (5), and the C ball (7) is rotatably connected to the top of the lower valve stem (5) via a pin (10). The C ball (7) rotates up and down along the lower valve stem (5). The inner end of the upper valve stem (6) is provided with a flip groove (11) for the top of the C ball (7) to be inserted, and the end of the upper valve stem (6) is provided with a sloping groove (12). The top of the C ball (7) is provided with a cylindrical pin (13) that is inserted into the sloping groove (12) and slides along the sloping groove (12). The valve body (1) is provided with an inlet (14) and an outlet (15) communicating with the mounting cavity (2), and the inner port of the outlet (15) is provided with a valve seat (16), and the valve seat (16) is used to seal the connection between the valve core (8) and the valve body (1) after the valve core (8) is closed; the upper valve stem (6) rotates and moves up and down along the upper mounting port (4).

2. The lifting rod track valve according to claim 1, characterized in that, The lower mounting port (3) is provided with a bushing (25) for installing the lower valve stem (5) and the lower mounting port (3), and the outer end of the lower mounting port (3) is provided with a pressure cap (17) for closing the lower mounting port (3).

3. A lifting rod track valve according to claim 2, characterized in that, A first sealing ring (23) is provided between the pressure cap (17) and the valve body (1).

4. A lifting rod track valve according to claim 1, characterized in that, The upper mounting port (4) is provided with a pressure tube (18), and the pressure tube (18) is provided with a sealing packing layer (19) for sealing between the upper mounting port (4) and the pressure tube (18), and a second sealing ring (24) is provided between the pressure tube (18) and the valve body (1).

5. A lifting rod track valve according to claim 4, characterized in that, The inner end of the upper valve stem (6) is provided with an anti-detachment block (20), and the inside of the pressure tube (18) is provided with an anti-detachment cavity (21) that is recessed inward and moves up and down with the anti-detachment block (20).

6. A lifting rod track valve according to claim 2, characterized in that, The outlet (15) is provided with an installation groove (22), and the valve seat (16) is fixed in the installation groove (22) by a pressure plate (26).

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