A high sealing gate valve

Abstract

The present invention belongs to the technical field of gate valves. The present invention discloses a high-sealing gate valve, including a valve body, a liquid inlet chamber is arranged in the valve body, an inlet and an outlet connected to the liquid inlet chamber are arranged opposite to each other on the surface of the valve body, a valve cover is arranged at the top of the valve body, a mounting screw sleeve is fixedly connected to the valve cover, and also includes: a valve stem located in the mounting screw sleeve, the bottom end of the valve stem extends into the liquid inlet chamber, a valve plate is rotatably installed at the bottom end of the valve stem, the valve plate is arranged in an inclined manner near the inlet end, a front valve seat connected to the inlet and a rear valve seat connected to the outlet are also arranged in the liquid inlet chamber, the valve plate is limited between the front valve seat and the rear valve seat, and a baffle assembly is installed on the front valve seat. The present invention provides a high-sealing gate valve, the baffle blocks the water flow to reduce part of the water hammer hitting the valve plate, the valve plate is arranged in an inclined manner near the inlet end, so as to unload the water hammer, thereby changing the force direction of the water hammer, and then protecting the valve plate.

Description

Technical Field

[0001] The invention belongs to the technical field of gate valves, and in particular relates to a high-sealing gate valve. Background Art

[0002] The gate valve is a gate plate, which is an opening and closing part. The movement direction of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened or fully closed, and cannot be adjusted or throttled. There are rigid gate plates and elastic gate plates. According to the difference in the gate plates, gate valves are divided into rigid gate valves and elastic gate valves. They are widely used in various fields. As the use requirements of gate valves continue to increase, the sealing requirements of gate valves are also constantly improving.

[0003] Chinese patent CN214197326 U discloses a high-sealing gate valve, including a valve body, a valve cover detachably connected to the valve body, a valve stem threadedly connected to the valve cover, the valve stem fixedly connected to the valve cover through a limit rod, a valve plate movably connected to one end of the valve stem away from the valve cover, and the valve plate and the valve body are slidably connected. The utility model effectively increases the sealing area during the use of the gate valve by setting a high-sealing gate valve, improves the sealing performance of the gate valve, and at the same time, the sealing plate can prevent the impurities at the bottom of the valve body from silting up and affecting the sealing of the valve plate to a certain extent, ensure the sealing effect of the gate valve, and increase the reliability of the use of the gate valve. At the same time, by setting a limit rod on the gate valve, the gate valve is locked after being tightly closed, thereby improving the stability of the valve plate seal, avoiding the water pressure impact causing the valve stem to move up and then causing a gap in the valve plate seal, improving the sealing performance of the gate valve, increasing the functionality of the device, and being suitable for promotion.

[0004] When the valve plate of the utility model is closed, water hammer will be generated in the water inlet passage, and the water hammer will directly hit the valve plate, so that the valve plate cannot be protected. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention discloses a high-sealing gate valve, including a valve body, a liquid inlet chamber is arranged in the valve body, an inlet and an outlet connected to the liquid inlet chamber are arranged opposite to each other on the surface of the valve body, a valve cover is arranged on the top of the valve body, a mounting screw sleeve is fixedly connected to the valve cover, and also includes: a valve stem located in the mounting screw sleeve, the bottom end of the valve stem extends into the liquid inlet chamber, a valve plate is rotatably installed on the bottom end of the valve stem, the valve plate is inclined near the inlet end, a front valve seat connected to the inlet and a rear valve seat connected to the outlet are also arranged in the liquid inlet chamber, the valve plate is limited between the front valve seat and the rear valve seat, and the baffle assembly is installed on the front valve seat.

[0006] Preferably, a rotating handle is installed on the top end of the valve stem.

[0007] Preferably, both the inlet and the outlet are provided with matching flanges.

[0008] Preferably, the baffle assembly comprises:

[0009] A baffle plate is disposed in the front valve seat one above and one below, and the baffle plate is rotatably mounted on the inner wall of the front valve seat;

[0010] An annular seat, wherein the annular seat sleeve is arranged on the front valve seat;

[0011] An annular action chamber, which is arranged in the annular seat and is connected to the inner ring end of the annular seat;

[0012] Internal gear ring, which is installed in the annular action chamber;

[0013] Gear one and two gears one corresponding to the two baffles are arranged in the annular action chamber, gear one is meshed with the inner gear ring, and gear one is connected with the baffle through the installation shaft.

[0014] Preferably, one end of the mounting shaft extends into the annular seat and is connected to gear one, and the other end of the mounting shaft extends into the front valve seat and is connected to the baffle.

[0015] Preferably, the baffle assembly further comprises:

[0016] The positioning column is fixedly installed on the inner wall of the liquid inlet chamber, and an arc groove is opened on the inner wall of the annular action chamber to facilitate the positioning column to pass through;

[0017] An installation sleeve, which is located in the annular action chamber and sleeved on the positioning column;

[0018] An inclined groove is provided on the inner wall of the annular action chamber, a slider is installed in the inclined groove, and the slider is connected to the mounting sleeve;

[0019] A hemispherical top block, which is installed on the mounting sleeve and abuts against the valve plate;

[0020] The return spring is sleeved on the positioning column and is disposed between the end of the mounting sleeve away from the hemispherical top block and the inner wall of the annular action chamber.

[0021] Preferably, it also includes:

[0022] A sealing rubber ring, wherein the sealing rubber ring is sleeved on the rear valve seat;

[0023] Incomplete gear ring, the incomplete gear ring is installed on the annular seat;

[0024] A connecting rod is clamped on the rear valve seat and connected to the sealing rubber ring;

[0025] The adjusting component is installed on the inner wall of the liquid inlet chamber and connected between the incomplete gear ring and the connecting clamp rod.

[0026] Preferably, the adjustment component comprises:

[0027] A sliding seat, the sliding seat is fixedly mounted on the inner wall of the liquid inlet chamber;

[0028] A rotating screw rod is mounted on the sliding seat, and one end of the rotating screw rod is mounted with a second gear meshing with the incomplete gear ring;

[0029] The sliding screw block is slidably connected in the sliding seat and sleeved on the rotating screw rod. The connecting rod is connected with the sliding screw block.

[0030] Preferably, the front valve seat and the rear valve seat are integrally formed and connected to the inner wall of the liquid inlet chamber.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention provides a high-sealing gate valve, wherein the valve body is installed on a pipeline through an inlet and an outlet, water is sent into a liquid inlet chamber from the inlet, and is sent out from the outlet, and when the gate valve needs to be closed, the valve stem rotates in the mounting screw sleeve, thereby driving a valve plate connected to the valve stem to fall between a front valve seat and a rear valve seat, and the valve plate gradually blocks the rear valve seat near the outlet end, and synchronously, an inclined surface of the valve plate near the inlet end triggers the baffle assembly to work, and two baffles in the front valve seat rotate from a direction parallel to the water flow to a direction perpendicular to the water flow, and the baffle blocks the water flow to reduce part of the water hammer hitting the valve plate, and the valve plate is inclined near the inlet end, thereby unloading the water hammer, thereby changing the force direction of the water hammer, and further protecting the valve plate.

[0033] 2. The present invention provides a high-sealing gate valve. When the gate valve needs to be closed, the valve stem rotates in the mounting screw sleeve, thereby driving the valve plate connected to the valve stem to fall between the front valve seat and the rear valve seat, and the valve plate gradually blocks the rear valve seat near the outlet end, and the inclined surface of the valve plate near the inlet end gradually presses the hemispherical top block, thereby driving the mounting sleeve connected to the hemispherical top block to move on the positioning column in the contraction direction of the reset spring, and the sliding block connected to the mounting sleeve slides in the inclined groove, thereby driving the annular seat sleeved on the front valve seat to rotate, thereby realizing the rotation of the inner gear ring located in the annular action chamber, and the inner gear ring drives the gear 1 meshing with it, and the baffle connected to the gear 1 through the mounting shaft rotates in the front valve seat, thereby realizing that the two baffles in the front valve seat are arranged to be perpendicular to the flow direction of the water flow, and the baffle blocks the water flow to reduce part of the water hammer hitting the valve plate.

[0034] 3. The present invention provides a high-sealing gate valve. When the gate valve needs to be closed, the valve stem rotates in the mounting screw sleeve, thereby driving the valve plate connected to the valve stem to fall between the front valve seat and the rear valve seat, and the valve plate gradually blocks the rear valve seat near the outlet end, and the inclined surface of the valve plate near the inlet end gradually presses the hemispherical top block, thereby driving the mounting sleeve connected to the hemispherical top block to move on the positioning column in the contraction direction of the reset spring, and the sliding block connected to the mounting sleeve slides in the inclined groove, thereby driving the annular seat sleeved on the front valve seat to rotate, and the incomplete gear ring installed on the annular seat drives the gear 2 meshing with it to rotate, and the gear 2 drives the rotating screw connected to it to rotate in the sliding seat, thereby driving the sliding screw block sleeved on the rotating screw and the connecting clamping rod connected to the sliding screw block to move in the direction close to the annular seat, and the connecting clamping rod drives the sealing rubber ring to move on the rear valve seat in the direction close to the valve plate, and the sealing rubber ring is against the valve plate, thereby realizing the sealing connection between the valve plate and the rear valve seat, thereby improving the sealing of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 The structure of the present invention is schematically shown Figure 1 (valve plate closed);

[0037] Figure 2 for Figure 1 The enlarged view of the middle label A;

[0038] Figure 3 The structure of the present invention is schematically shown Figure 2 (valve plate open state);

[0039] Figure 4 It is a schematic diagram of the structure of the regulating component of the present invention;

[0040] Figure 5 It is the appearance diagram of the present invention.

[0041] In the figure: 10. valve body; 11. liquid inlet chamber; 12. inlet; 13. outlet; 14. valve cover; 15. mounting screw sleeve; 16. valve stem; 17. valve plate; 18. front valve seat; 19. rear valve seat; 20. baffle assembly; 21. rotating handle; 22. matching flange; 23. baffle; 24. annular seat; 25. inner gear ring; 26. gear one; 27. positioning column; 28. mounting sleeve; 29. ​​inclined groove; 30. hemispherical top block; 31. reset spring; 32. sealing rubber ring; 33. incomplete gear ring; 34. connecting rod; 35. sliding seat; 36. rotating screw; 37. gear two; 38. sliding screw block. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] like Figures 1 to 5 As shown, a high-sealing gate valve provided in this embodiment includes a valve body 10, a liquid inlet chamber 11 is provided in the valve body 10, an inlet 12 and an outlet 13 connected to the liquid inlet chamber 11 are arranged opposite to each other on the surface of the valve body 10, a valve cover 14 is provided at the top of the valve body 10, a mounting screw sleeve 15 is fixedly connected to the valve cover 14, and also includes: a valve stem 16 located in the mounting screw sleeve 15, the bottom end of the valve stem 16 extends into the liquid inlet chamber 11, a valve plate 17 is rotatably installed at the bottom end of the valve stem 16, and the valve plate 17 is inclined near the inlet 12 end. A front valve seat 18 connected to the inlet 12 and a rear valve seat 19 connected to the outlet 13 are also provided in the liquid inlet chamber 11, the valve plate 17 is limited between the front valve seat 18 and the rear valve seat 19, and the baffle assembly 20 is installed on the front valve seat 18.

[0045] The working principle and beneficial effects of the above technical solution are:

[0046] The present invention discloses a high-sealing gate valve. A valve body 10 is installed on a pipeline through an inlet 12 and an outlet 13. Water is sent into a liquid inlet chamber 11 from the inlet 12 and sent out from the outlet 13. When the gate valve needs to be closed, a valve stem 16 rotates in a mounting screw sleeve 15, thereby driving a valve plate 17 connected to the valve stem 16 to fall between a front valve seat 18 and a rear valve seat 19. The valve plate 17 gradually blocks the rear valve seat 19 near the end of the outlet 13. Synchronously, an inclined surface of the valve plate 17 near the end of the inlet 12 triggers a baffle assembly 20 to work. Two baffles 23 in the front valve seat 18 rotate from a direction parallel to the water flow to a direction perpendicular to the water flow. The baffles 23 block the water flow, thereby reducing part of the water hammer hitting the valve plate 17. The other part of the water hammer hitting the valve plate 17 is because the valve plate 17 is inclined near the end of the inlet 12, thereby unloading the water hammer, and the water hammer slides obliquely downward, thereby changing the force direction of the water hammer. The present invention provides a high-sealing gate valve, wherein the baffle 23 blocks the water flow to reduce part of the water hammer hitting the valve plate 17, and the valve plate 17 is inclined near the inlet 12 end to unload the water hammer, thereby changing the force direction of the water hammer and protecting the valve plate 17.

[0047] In one embodiment, a rotating handle 21 is installed at the top end of the valve stem 16 .

[0048] The beneficial effects of the above technical solution are:

[0049] The setting of the rotating handle 21 facilitates manual rotation of the valve stem 16 .

[0050] In one embodiment, both the inlet 12 and the outlet 13 are provided with mating flanges 22 .

[0051] The beneficial effects of the above technical solution are:

[0052] The arrangement of the matching flange 22 facilitates the connection between the valve body 10 and the pipeline.

[0053] In one embodiment, the baffle assembly 20 includes:

[0054] A baffle plate 23 is disposed in the front valve seat 18 in an upper and lower manner, and the baffle plate 23 is rotatably mounted on the inner wall of the front valve seat 18;

[0055] An annular seat 24, the annular seat 24 is sleeved on the front valve seat 18;

[0056] An annular action chamber, which is arranged in the annular seat 24 and is connected to the inner ring end of the annular seat 24;

[0057] An inner gear ring 25, the inner gear ring 25 is installed in the annular action chamber;

[0058] Gear 1 26, two gears 1 26 corresponding to the two baffles 23 are arranged in the annular action chamber, gear 1 26 is meshed with the inner gear ring 25, and gear 1 26 is connected to the baffle 23 through the mounting shaft.

[0059] One end of the mounting shaft extends into the annular seat 24 and is connected to the gear 1 26, and the other end of the mounting shaft extends into the front valve seat 18 and is connected to the baffle 23.

[0060] The working principle and beneficial effects of the above technical solution are:

[0061] The annular seat 24 sleeved on the front valve seat 18 rotates, thereby realizing the rotation of the inner gear ring 25 located in the annular action chamber, and the inner gear ring 25 drives the gear 1 26 meshing therewith and the baffle 23 connected to the gear 1 26 through the mounting shaft to rotate in the front valve seat 18, thereby realizing the change of the posture of the baffle 23 in the front valve seat 18. Thus, the water flow is blocked.

[0062] Specifically, when the gate valve is opened, the two baffles 23 in the front valve seat 18 are arranged parallel to the flow direction of the water flow, and when the gate valve is closed, the two baffles 23 in the front valve seat 18 are arranged perpendicular to the flow direction of the water flow.

[0063] In one example, the baffle assembly 20 further includes:

[0064] The positioning column 27 is fixedly mounted on the inner wall of the liquid inlet chamber 11, and an arc groove is provided on the inner wall of the annular action chamber to facilitate the positioning column 27 to pass through;

[0065] A mounting sleeve 28, which is located in the annular action chamber and sleeved on the positioning column 27;

[0066] An inclined groove 29 is provided on the inner wall of the annular action chamber, a slider is installed in the inclined groove, and the slider is connected to the mounting sleeve 28;

[0067] A hemispherical top block 30, which is mounted on the mounting sleeve 28 and abuts against the valve plate 17;

[0068] The return spring 31 is sleeved on the positioning column 27 and is disposed between the end of the mounting sleeve 28 away from the hemispherical top block 30 and the inner wall of the annular action chamber.

[0069] The working principle and beneficial effects of the above technical solution are:

[0070] When the gate valve needs to be closed, the valve stem 16 rotates in the mounting screw sleeve 15, thereby driving the valve plate 17 connected to the valve stem 16 to fall between the front valve seat 18 and the rear valve seat 19, and the valve plate 17 gradually blocks the rear valve seat 19 near the outlet 13 end, and the inclined surface of the valve plate 17 near the inlet 12 end gradually presses the hemispherical top block 30, thereby driving the mounting sleeve 28 connected to the hemispherical top block 30 to move on the positioning column 27 in the contraction direction of the return spring 31, and the slider connected to the mounting sleeve 28 slides in the inclined groove 29, thereby driving the annular seat 24 sleeved on the front valve seat 18 to rotate, thereby realizing the rotation of the inner gear ring 25 located in the annular action chamber, and the inner gear ring 25 drives the gear 1 26 meshing therewith and the baffle 23 connected to the gear 1 26 through the mounting shaft to rotate in the front valve seat 18, thereby realizing the change of the posture of the baffle 23 in the front valve seat 18. The arc-shaped groove is provided to prevent the positioning column 27 from causing motion interference when the annular seat 24 rotates on the front valve seat 18 .

[0071] When the valve plate 17 blocks the rear valve seat 19 close to the outlet 13, the contraction amount of the return spring 31 is the largest, and the gate valve is in a closed state. When the gate valve needs to be opened, the valve stem 16 is rotated in the opposite direction, and the valve plate 17 is lifted between the front valve seat 18 and the rear valve seat 19. The valve plate 17 close to the outlet 13 end releases the blocking of the rear valve seat 19, and the inclined surface of the valve plate 17 close to the inlet 12 end releases the pressing of the hemispherical top block 30. After the reset spring 31 is reset and stretched, the mounting sleeve 28 drives the hemispherical top block 30 to gradually extend out of the annular action chamber along the positioning column 27. At this time, the slider slides in the opposite direction in the inclined groove 29, so that the annular seat 24 sleeved on the front valve seat 18 rotates in the opposite direction, thereby realizing the reverse rotation of the inner gear ring 25 located in the annular action chamber. The inner gear ring 25 drives the gear 1 26 meshing therewith and the baffle 23 connected to the gear 1 26 through the mounting shaft to rotate in the opposite direction in the front valve seat 18, and the two baffles 23 in the front valve seat 18 are restored to a state parallel to the flow direction of the water flow.

[0072] In one example, it also includes:

[0073] A sealing rubber ring 32, the sealing rubber ring 32 is sleeved on the rear valve seat 19;

[0074] An incomplete gear ring 33, wherein the incomplete gear ring 33 is mounted on the annular seat 24;

[0075] A connecting rod 34, which is clamped on the rear valve seat 19 and connected to the sealing rubber ring 32;

[0076] The adjusting component is installed on the inner wall of the liquid inlet chamber 11 and connected between the incomplete gear ring 33 and the connecting clamp rod 34 .

[0077] The adjustment components include:

[0078] A sliding seat 35, the sliding seat 35 is fixedly mounted on the inner wall of the liquid inlet chamber 11;

[0079] A rotating screw 36 is mounted on the sliding seat 35, and a second gear 37 meshing with the incomplete gear ring 33 is mounted on one end of the rotating screw 36;

[0080] The sliding screw block 38 is slidably connected in the sliding seat 35 and sleeved on the rotating screw rod 36 . The connecting rod 34 is connected to the sliding screw block 38 .

[0081] The working principle and beneficial effects of the above technical solution are:

[0082] When the gate valve needs to be closed, the valve stem 16 rotates in the mounting screw sleeve 15, thereby driving the valve plate 17 connected to the valve stem 16 to fall between the front valve seat 18 and the rear valve seat 19, and the valve plate 17 gradually blocks the rear valve seat 19 near the outlet 13 end, and the inclined surface of the valve plate 17 near the inlet 12 end gradually presses the hemispherical top block 30, thereby driving the mounting sleeve 28 connected to the hemispherical top block 30 to move on the positioning column 27 in the contraction direction of the return spring 31, and the slider connected to the mounting sleeve 28 slides in the inclined groove 29, thereby driving the annular seat 24 sleeved on the front valve seat 18 to rotate, and the annular seat 24 installed on the front valve seat 18 is rotated. The incomplete gear ring 33 on the annular seat 24 drives the gear 2 37 meshing therewith to rotate, and the gear 2 37 drives the rotating screw 36 connected thereto to rotate in the sliding seat 35, thereby driving the sliding screw block 38 sleeved on the rotating screw 36 and the connecting clamping rod 34 connected to the sliding screw block 38 to move in the direction close to the annular seat 24, and the connecting clamping rod 34 drives the sealing rubber ring 32 on the rear valve seat 19 to move in the direction close to the valve plate 17, and the sealing rubber ring 32 is abutted against the valve plate 17, thereby realizing the sealing connection between the valve plate 17 and the rear valve seat 19, thereby improving the sealing performance of the gate valve.

[0083] In one embodiment, the front valve seat 18 and the rear valve seat 19 are integrally formed and connected to the inner wall of the liquid inlet chamber 11 .

[0084] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A high sealing gate valve, comprising a valve body (10), a liquid inlet chamber (11) is arranged in the valve body (10), an inlet (12) and an outlet (13) connected to the liquid inlet chamber (11) are arranged on the surface of the valve body (10) opposite to each other, a valve cover (14) is arranged at the top end of the valve body (10), and a mounting screw sleeve (15) is fixedly connected to the valve cover (14), characterized in that: Also includes: A valve stem (16) is located in the mounting screw sleeve (15), the bottom end of the valve stem (16) extends into the liquid inlet chamber (11), a valve plate (17) is rotatably mounted on the bottom end of the valve stem (16), the valve plate (17) is arranged in an inclined manner near the inlet (12), a front valve seat (18) communicating with the inlet (12) and a rear valve seat (19) communicating with the outlet (13) are also arranged in the liquid inlet chamber (11), the valve plate (17) is limited between the front valve seat (18) and the rear valve seat (19), and a baffle assembly (20) is mounted on the front valve seat (18); The baffle assembly (20) comprises: a baffle (23) disposed one above and one below in the front valve seat (18), an annular seat (24), an inner gear ring (25) and a gear one (26); the baffle (23) is rotatably mounted on the inner wall of the front valve seat (18); the annular seat (24) is sleeved on the front valve seat (18); an annular action chamber is disposed in the annular seat (24) and is connected to the inner ring end of the annular seat (24); the inner gear ring (25) is installed in the annular action chamber; two gears one (26) corresponding to the two baffles (23) are disposed in the annular action chamber; the gear one (26) is meshed with the inner gear ring (25); and the gear one (26) is connected to the baffle (23) via a mounting shaft; The baffle assembly (20) further comprises: a positioning column (27), a mounting sleeve (28), a hemispherical top block (30) and a return spring (31). The positioning column (27) is fixedly mounted on the inner wall of the liquid inlet chamber (11). An arc groove is provided on the inner wall of the annular action chamber for facilitating the positioning column (27) to pass through. The mounting sleeve (28) is located in the annular action chamber and is sleeved on the positioning column (27). An inclined groove (29) is provided on the inner wall of the annular action chamber. A slider is mounted in the inclined groove. The slider is connected to the mounting sleeve (28). The hemispherical top block (30) is mounted on the mounting sleeve (28). The hemispherical top block (30) is abutted against the valve plate (17). The return spring (31) is sleeved on the positioning column (27) and abutted between the end of the mounting sleeve (28) away from the hemispherical top block (30) and the inner wall of the annular action chamber.

2. A high sealing gate valve according to claim 1, characterized in that: A rotating handle (21) is mounted on the top end of the valve stem (16).

3. A high sealing gate valve according to claim 1, characterized in that: The inlet (12) and the outlet (13) are both provided with matching flanges (22).

4. A high sealing gate valve according to claim 1, characterized in that: One end of the installation shaft extends into the annular seat (24) and is connected to the gear 1 (26), and the other end of the installation shaft extends into the front valve seat (18) and is connected to the baffle (23).

5. A high sealing gate valve according to claim 1, characterized in that: Also includes: A sealing rubber ring (32), the sealing rubber ring (32) is sleeved on the rear valve seat (19); An incomplete gear ring (33), wherein the incomplete gear ring (33) is mounted on the annular seat (24); A connecting rod (34), the connecting rod (34) is clamped on the rear valve seat (19) and connected to the sealing rubber ring (32); The regulating assembly is installed on the inner wall of the liquid inlet chamber (11) and is connected between the incomplete gear ring (33) and the connecting clamp rod (34).

6. A high sealing gate valve according to claim 5, characterized in that: The adjustment components include: A sliding seat (35), the sliding seat (35) is fixedly mounted on the inner wall of the liquid inlet chamber (11); A rotating screw rod (36) is mounted on the sliding seat (35), and a second gear (37) meshing with the incomplete gear ring (33) is mounted on one end of the rotating screw rod (36); The sliding screw block (38) is slidably connected in the sliding seat (35) and sleeved on the rotating screw rod (36). The connecting rod (34) is connected to the sliding screw block (38).

7. A high sealing gate valve according to claim 1, characterized in that: The front valve seat (18) and the rear valve seat (19) are integrally formed and connected to the inner wall of the liquid inlet chamber (11).

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