Double bevel wedge type resilient seal gate valve

Abstract

The utility model belongs to the field of valve especially a double inclined plane wedge elastic sealing gate valve, in view prior art gate valve is easy to appear leakage problem. Meanwhile, the sealing effect between the gate and the valve body still needs to be further improved to cope with the problem of fluid pressure change under different working conditions, the present scheme is proposed, it includes, the valve body, both sides and the top of valve body are open setting, the top of valve body is fixedly connected with upper valve seat through connecting assembly, the top opening of upper valve seat and valve body fixed communication, the top of upper valve seat is fixedly connected with connecting seat. In the utility model, both sides of the gate are inclined plane, which is tightly attached to the inner wall of the valve body, and a first annular sealing ring is fixedly sleeved on both sides of the gate, when the valve is closed, the sealing effect between both sides of the gate and the inner wall of the valve body can be improved, the convex plate drives the arc block to move downward and stretch the tension spring, so that the sealing gasket on the outer wall of the arc block is extruded against the inner wall of the bottom of the valve body, and the sealing performance of the device is improved again.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a double-sloping wedge-shaped elastic sealing gate valve. Background Technology

[0002] In industrial production and fluid transportation, valves are key devices for controlling fluid flow, and their sealing performance is of paramount importance.

[0003] Existing gate valves, due to insufficient sealing between the valve stem and body, are prone to leakage during long-term use, affecting normal valve operation and reducing system safety and reliability. Simultaneously, the sealing effect between the gate and valve body needs further improvement to cope with fluid pressure changes under different operating conditions, ensuring a good seal when the valve is closed and preventing fluid leakage.

[0004] Therefore, developing a gate valve with better sealing performance is of great practical significance. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing gate valves, such as leakage problems caused by an imperfect sealing structure between the valve stem and valve body during long-term use, which affect the normal operation of the valve and reduce the safety and reliability of the system. Furthermore, the sealing effect between the gate and valve body needs further improvement to cope with changes in fluid pressure under different operating conditions, ensuring a good seal when the valve is closed and preventing fluid leakage. Therefore, this invention proposes a double-beveled wedge-shaped elastic sealing gate valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A double-sloping wedge-shaped resilient sealing gate valve includes a valve body with openings on both sides and the top. An upper valve seat is fixedly connected to the top of the valve body via a connecting assembly. The upper valve seat is fixedly connected to the top opening of the valve body. A connecting seat is fixedly connected to the top of the upper valve seat. An electric actuator is fixedly connected to the top of the connecting seat. A valve stem is fixedly connected to the output shaft of the electric actuator. The electric actuator is used to drive the valve stem to rise and fall. The bottom of the valve stem slides through the upper valve seat and extends into the interior of the valve body. A gate plate is fixedly connected to the bottom of the valve stem. The gate plate is used to block the valve and control the opening and closing state of the valve.

[0008] The upper valve seat is internally provided with a first sealing component for improving the valve sealing performance;

[0009] Both sides of the gate are provided with circular grooves, and a second sealing component is provided inside the circular grooves to improve the sealing performance of the valve.

[0010] In one possible design, the connecting assembly includes a plurality of first fixing screws threaded through the interior of the upper valve seat, the bottom threads of the first fixing screws extending to the bottom of the valve body, the outer wall threads of the first fixing screws being fitted with a first fixing nut, and an annular sealing gasket being fixedly disposed at the bottom of the upper valve seat, the annular sealing gasket abutting against the top of the valve body.

[0011] In one possible design, the first sealing assembly includes packing material fixedly filled inside an upper valve seat, a plurality of second fixing screws fixedly connected to the top of the upper valve seat, a mounting plate placed on the top of the upper valve seat, the top of the second fixing screws slidingly penetrating the mounting plate, and a second fixing nut threaded onto the outer wall of the second fixing screw for fixing the mounting plate.

[0012] In one possible design, a pressure block is fixedly connected to the bottom of the mounting plate, the bottom of which abuts against the top of the packing and is used to compress the packing.

[0013] In one possible design, the second sealing assembly includes a circular plate slidably connected to the inner wall of a circular groove, a common connecting rod fixedly connected between two of the circular plates, the two ends of the connecting rod extending into the two circular grooves respectively, and a fixing block fixedly connected to the bottom of one side of the circular plate.

[0014] In one possible design, the bottom of the gate has a rectangular cavity, an arc-shaped block slides through the inside of the rectangular cavity, a convex plate is fixedly connected to the top of the arc-shaped block, the top of the convex plate slides through the rectangular cavity and extends into the inside of the circular groove, the fixed block cooperates with the convex plate and is used to push the convex plate downward, the outer wall of the arc-shaped block is fixedly covered with a sealing gasket, and the top of the arc-shaped block and the top inner wall of the rectangular cavity are fixedly connected with the same tension spring.

[0015] In one possible design, a second annular sealing ring is fixedly fitted on the outer wall of the circular plate, and a first annular sealing ring is fixedly fitted on both sides of the gate.

[0016] In one possible design, the upper valve seat is further provided with a circular cavity, and an annular sealing protrusion is fixedly provided on the inner wall of the cavity. An annular sealing concave block is fixedly engaged on the top of the annular sealing protrusion, and both the annular sealing protrusion and the annular sealing concave block are slidably sleeved on the outer wall of the valve stem.

[0017] In this application, during use, by starting the electric actuator, the electric actuator drives the internal worm gear to rotate through the motor, and then drives the valve stem to rise through the linkage of the worm wheel and worm gear. The valve stem drives the gate to rise, at which time the valve can be adjusted from the closed state to the open state. In addition, the packing can improve the sealing performance of the valve stem. Both the annular sealing protrusion and the annular sealing concave block are fitted on the valve stem, and the annular sealing concave block is snapped into the top of the annular sealing protrusion, which further improves the sealing performance of the valve stem.

[0018] When the valve is closed, the valve stem moves down to its lowest point. At this time, both sides of the gate are inclined surfaces, which fit tightly against the inner wall of the valve body. At the same time, the first annular sealing ring can improve the sealing performance on both sides of the gate. When there is fluid on one side of the gate, it can push the circular plate to move laterally. The circular plate drives the fixed block into the interior of the circular groove. The fixed block pushes the corresponding convex plate down. The convex plate drives the arc-shaped block down and stretches the tension spring. At this time, the sealing gasket on the outer wall of the arc-shaped block is squeezed against the bottom inner wall of the valve body, which further improves the sealing performance of the device and makes it easy to use.

[0019] Beneficial effects: By installing packing inside the upper valve seat and using the mounting plate and pressure block to compress the packing, the valve stem is sealed. Simultaneously, annular sealing protrusions and annular sealing recesses are installed, both fitted onto the valve stem, with the annular sealing recess engaging with the top of the annular sealing protrusion. This further enhances the sealing performance of the valve stem, effectively preventing fluid leakage from the gap between the valve stem and the upper valve seat, and improving the overall sealing reliability of the valve.

[0020] Both sides of the gate are beveled, fitting tightly against the inner wall of the valve body. A first annular sealing ring is fixedly fitted on both sides of the gate, enhancing the sealing effect between the gate and the valve body when the valve is closed. Furthermore, a second sealing component is installed at the bottom of the gate. When fluid is present on one side of the gate, the fluid pushes the circular plate laterally. The circular plate moves the fixed block into the circular groove, pushing the convex plate downwards. The convex plate then moves the arc-shaped block downwards and stretches the tension spring, causing the sealing gasket on the outer wall of the arc-shaped block to press against the inner wall of the valve body bottom, further improving the sealing performance and ensuring the valve maintains a good sealing condition under various operating conditions.

[0021] The valve stem is driven by an electric actuator to automatically open and close the valve, simplifying operation and improving work efficiency. Furthermore, the tight connections between components ensure a stable structure, facilitating installation and maintenance and reducing operating costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional cross-sectional view of a double-sloping wedge-shaped elastic sealing gate valve proposed in this utility model.

[0023] Figure 2 This is a three-dimensional structural diagram of the gate plate in a double-sloping wedge-shaped elastic sealing gate valve proposed in this utility model;

[0024] Figure 3 This is a three-dimensional cross-sectional view of the gate plate in a double-sloping wedge-shaped elastic sealing gate valve proposed in this utility model.

[0025] In the diagram: 1. Valve body; 2. Gate; 3. Valve stem; 4. Annular sealing gasket; 5. First fixing screw; 6. First fixing nut; 7. Upper valve seat; 8. Packing; 9. Second fixing screw; 10. Second fixing nut; 11. Pressure block; 12. Mounting plate; 13. First annular sealing ring; 14. Annular sealing protrusion; 15. Circular cavity; 16. Annular sealing concave block; 17. Connecting seat; 18. Electric actuator; 19. Circular plate; 20. Circular groove; 21. Tension spring; 22. Connecting rod; 23. Second annular sealing ring; 24. Fixing block; 25. Protruding plate; 26. Arc-shaped block; 27. Rectangular cavity. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Reference Figure 1-3 A double-sloping wedge-shaped resilient sealing gate valve includes: a valve body 1, with openings on both sides and the top; an upper valve seat 7 fixedly connected to the top of the valve body 1 via a connecting assembly; the connecting assembly includes multiple first fixing screws 5 threaded through the interior of the upper valve seat 7; the bottom threads of the first fixing screws 5 extend to the bottom of the valve body 1; a first fixing nut 6 is threaded onto the outer wall of the first fixing screws 5; an annular sealing gasket 4 is fixedly disposed at the bottom of the upper valve seat 7, abutting against the top of the valve body 1; the upper valve seat 7 is fixedly connected to the top opening of the valve body 1; a connecting seat 17 is fixedly connected to the top of the upper valve seat 7; an electric actuator 18 is fixedly connected to the top of the connecting seat 17; and a valve stem 3 is fixedly connected to the output shaft of the electric actuator 18. The electric actuator 18 is used to drive the valve stem 3 to rise and fall. The bottom of the valve stem 3 slides through the upper valve seat 7 and extends into the interior of the valve body 1. The bottom of the valve stem 3 is fixedly connected to the gate plate 2, which is used to block the valve and control the opening and closing state of the valve. By starting the electric actuator 18, the electric actuator 18 drives the internal worm gear to rotate through the motor, and then drives the valve stem 3 to rise through the linkage of the worm gear. The valve stem 3 drives the gate plate 2 to rise. At this time, the closed state of the valve can be adjusted to the open state. The packing 8 can improve the sealing performance of the valve stem 3. The annular sealing protrusion 14 and the annular sealing concave block 16 are both sleeved on the valve stem 3, and the annular sealing concave block 16 is snapped into the top of the annular sealing protrusion 14, which further improves the sealing performance of the valve stem 3.

[0029] The upper valve seat 7 is provided with a first sealing component for improving the valve sealing performance. The first sealing component includes packing 8 fixedly filled inside the upper valve seat 7. Multiple second fixing screws 9 are fixedly connected to the top of the upper valve seat 7. A mounting plate 12 is placed on the top of the upper valve seat 7. The top of the second fixing screws 9 slides through the mounting plate 12. A second fixing nut 10 is threaded on the outer wall of the second fixing screws 9. The second fixing nut 10 is used to fix the mounting plate 12. A pressure block 11 is fixedly connected to the bottom of the mounting plate 12. The bottom of the pressure block 11 abuts against the top of the packing 8 and is used to compress the packing 8.

[0030] Both sides of the gate 2 are provided with circular grooves 20. A second sealing assembly for improving the valve's sealing performance is installed inside each groove 20. The second sealing assembly includes a circular plate 19 slidably connected to the inner wall of the groove 20. A connecting rod 22 is fixedly connected between the two circular plates 19, with both ends of the connecting rod 22 extending into the two circular grooves 20 respectively. A fixing block 24 is fixedly connected to the bottom of one side of each circular plate 19. A rectangular cavity 27 is provided at the bottom of the gate 2. An arc-shaped block 26 slides through the rectangular cavity 27. A protruding plate 25 is fixedly connected to the top of the arc-shaped block 26. The top of the protruding plate 25 slides through the rectangular cavity 27 and extends into the circular groove 20. The fixing block 24 cooperates with the protruding plate 25 and is used to push the protruding plate 25 downwards. The outer wall of the arc block 26 is fixedly covered with a sealing gasket. The top of the arc block 26 and the top inner wall of the rectangular cavity 27 are fixedly connected by the same tension spring 21. When the valve is closed, the valve stem 3 moves down to the lowest point. At this time, both sides of the gate plate 2 are inclined surfaces, which are tightly fitted with the inner wall of the valve body 1. At the same time, the first annular sealing ring 13 can improve the sealing performance of both sides of the gate plate 2. When there is fluid on one side of the gate plate 2, it can push the circular plate 19 to move laterally. The circular plate 19 drives the fixed block 24 into the interior of the circular groove 20. The fixed block 24 pushes the corresponding convex plate 25 down. The convex plate 25 drives the arc block 26 down and stretches the tension spring 21. At this time, the sealing gasket on the outer wall of the arc block 26 is squeezed against the bottom inner wall of the valve body 1, which further improves the sealing performance of the device and makes it easy to use.

[0031] This application can be used in the field of valves, or in other fields applicable to this application.

[0032] Example 2

[0033] refer to Figure 1-3An improvement based on Example 1: A double-sloping wedge-shaped elastic sealing gate valve is applied to the valve field. A second annular sealing ring 23 is fixedly sleeved on the outer wall of the circular plate 19. A first annular sealing ring 13 is fixedly sleeved on both sides of the gate plate 2. A circular cavity 15 is also opened inside the upper valve seat 7. An annular sealing protrusion 14 is fixedly installed on the inner wall of the circular cavity 15. An annular sealing concave block 16 is fixedly snapped onto the top of the annular sealing protrusion 14. Both the annular sealing protrusion 14 and the annular sealing concave block 16 are slidably sleeved on the outer wall of the valve stem 3.

[0034] However, as is well known to those skilled in the art, the working principle and wiring method of the electric actuator 18 are commonplace, and the model of the electric actuator 18 can be selected as DZW10-24-A00-DSI or DZW30-24-A00-DSI. These are all conventional methods or common knowledge, and will not be elaborated further here. Those skilled in the art can make any selection according to their needs or convenience.

[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-beveled wedge-shaped resilient sealing gate valve, characterized in that, include: The valve body (1) has openings on both sides and top. The top of the valve body (1) is fixedly connected to an upper valve seat (7) via a connecting assembly. The upper valve seat (7) is fixedly connected to the top opening of the valve body (1). A connecting seat (17) is fixedly connected to the top of the upper valve seat (7). An electric actuator (18) is fixedly connected to the top of the connecting seat (17). A valve stem (3) is fixedly connected to the output shaft of the electric actuator (18). The electric actuator (18) is used to drive the valve stem (3) to rise and fall. The bottom of the valve stem (3) slides through the upper valve seat (7) and extends into the interior of the valve body (1). A gate plate (2) is fixedly connected to the bottom of the valve stem (3). The gate plate (2) is used to block the valve and control the opening and closing state of the valve. The upper valve seat (7) is provided with a first sealing component for improving the valve sealing performance; Both sides of the gate (2) are provided with circular grooves (20), and the inside of the circular grooves (20) is provided with a second sealing component for improving the sealing performance of the valve.

2. The double-beveled wedge-shaped resilient sealing gate valve according to claim 1, characterized in that, The connecting assembly includes a plurality of first fixing screws (5) threaded through the interior of the upper valve seat (7), the bottom threads of the first fixing screws (5) extending to the bottom of the valve body (1), the outer wall of the first fixing screws (5) being fitted with a first fixing nut (6), and an annular sealing gasket (4) fixedly disposed at the bottom of the upper valve seat (7), the annular sealing gasket (4) abutting against the top of the valve body (1).

3. The double-beveled wedge-shaped resilient sealing gate valve according to claim 1, characterized in that, The first sealing assembly includes packing (8) that is fixedly filled inside the upper valve seat (7). A plurality of second fixing screws (9) are fixedly connected to the top of the upper valve seat (7). An mounting plate (12) is placed on the top of the upper valve seat (7). The top of the second fixing screws (9) slides through the mounting plate (12). A second fixing nut (10) is threaded on the outer wall of the second fixing screws (9). The second fixing nut (10) is used to fix the mounting plate (12).

4. The double-beveled wedge-shaped resilient sealing gate valve according to claim 3, characterized in that, A pressure block (11) is fixedly connected to the bottom of the mounting plate (12). The bottom of the pressure block (11) abuts against the top of the packing (8) and is used to compress the packing (8).

5. A double-beveled wedge-shaped resilient sealing gate valve according to claim 1, characterized in that, The second sealing assembly includes a circular plate (19) slidably connected to the inner wall of the circular groove (20), and a common connecting rod (22) is fixedly connected between the two circular plates (19). The two ends of the connecting rod (22) extend into the two circular grooves (20) respectively, and a fixing block (24) is fixedly connected to the bottom of one side of the circular plate (19).

6. A double-beveled wedge-shaped resilient sealing gate valve according to claim 5, characterized in that, The bottom of the gate (2) is provided with a rectangular cavity (27). An arc-shaped block (26) slides through the inside of the rectangular cavity (27). A convex plate (25) is fixedly connected to the top of the arc-shaped block (26). The top of the convex plate (25) slides through the rectangular cavity (27) and extends into the inside of the circular groove (20). The fixing block (24) works in conjunction with the convex plate (25) and is used to push the convex plate (25) down. The outer wall of the arc-shaped block (26) is fixedly covered with a sealing gasket. The top of the arc-shaped block (26) and the top inner wall of the rectangular cavity (27) are fixedly connected with the same tension spring (21).

7. A double-beveled wedge-shaped resilient sealing gate valve according to claim 5, characterized in that, The outer wall of the circular plate (19) is fixedly fitted with a second annular sealing ring (23), and both sides of the gate plate (2) are fixedly fitted with a first annular sealing ring (13).

8. A double-beveled wedge-shaped resilient sealing gate valve according to claim 1, characterized in that, The upper valve seat (7) is also provided with a circular cavity (15). An annular sealing protrusion (14) is fixedly provided on the inner wall of the circular cavity (15). An annular sealing concave block (16) is fixedly snapped onto the top of the annular sealing protrusion (14). The annular sealing protrusion (14) and the annular sealing concave block (16) are both slidably sleeved on the outer wall of the valve stem (3).

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