Differential buoyancy type double-cavity liquid level control valve

Abstract

The invention relates to a differential buoyancy type double-cavity liquid level control valve, and relates to the technical field of liquid level control valves, the differential buoyancy type double-cavity liquid level control valve comprises a valve body, a valve plug, a liquid level rod and a floating ball, the valve body is internally provided with a first liquid cavity and a second liquid cavity, and the valve body is internally provided with a through groove communicating the first liquid cavity with the second liquid cavity; the valve plug is arranged in the valve body in a sliding mode and can block the through groove, the liquid level rod is arranged on the valve body, the floating ball is arranged on the liquid level rod in a sliding mode, the valve body is provided with a transmission assembly, and the transmission assembly is used for driving the valve plug to move up and down according to vertical movement of the floating ball. The method has the effect of improving the applicability.

Description

Technical Field

[0001] This invention relates to the field of liquid level control valve technology, and in particular to a differential buoyancy type dual-chamber liquid level control valve. Background Technology

[0002] Liquid level control technology has a wide range of applications in industrial production and daily life, such as liquid level control in equipment like storage tanks, boilers, and water tanks. Through liquid level control technology, the liquid level inside the container can be adjusted in real time to ensure that the liquid level inside the container is within the set range.

[0003] Currently, liquid level control is mainly achieved through mechanical float valves. These valves are installed on the inlet pipe of the liquid container, with the float positioned inside the container. A typical float valve consists of a valve body and a small ball valve. The float and small ball valve are rotatably connected, and the float's rotation controls the opening and closing of the small ball valve. When the liquid level is too high, the float rises and rotates, closing the small ball valve. At this point, the differential pressure system inside the valve body closes the valve body valve, stopping the liquid inlet. When the liquid in the container is used, the liquid level drops, causing the float to move downwards and rotate around the small ball valve, opening the small ball valve. The differential pressure system then opens the valve body valve, allowing liquid to enter and achieving automatic liquid level control.

[0004] However, in actual use, the float of the small ball valve rotates as the liquid level rises and falls to open and close, and the range of the float's rotation is closely related to the liquid level. However, the float's rotation requires a certain amount of space and has a large range of movement within the container. If used in a container with a small cross-sectional space, the float may easily press against the inner wall of the container and thus cannot rotate smoothly. This makes the float valve unsuitable for containers with a small cross-sectional space and its overall applicability is poor. Summary of the Invention

[0005] To improve applicability, this application provides a differential buoyancy type dual-chamber liquid level control valve.

[0006] The differential buoyancy type dual-chamber liquid level control valve provided in this application adopts the following technical solution: A differential buoyancy-type dual-chamber liquid level control valve includes a valve body, a valve plug, a liquid level rod, and a float. The valve body has a first liquid chamber and a second liquid chamber, and a through groove connecting the first and second liquid chambers. The valve plug is slidably disposed in the valve body and can block the through groove. The liquid level rod is disposed on the valve body, and the float is slidably disposed on the liquid level rod. The valve body is provided with a transmission assembly, which is used to drive the valve plug to move up and down according to the up and down movement of the float.

[0007] By adopting the above technical solution, during installation, the liquid level rod is inserted into the container, allowing the float to enter the liquid in the container. When the liquid level in the container changes, it causes the float to move up and down on the liquid level rod, thereby driving the valve plug to move up and down through the transmission component to control the opening and closing of the passage, thus controlling the connection between the first liquid chamber and the second liquid chamber, realizing valve control. Thus, the liquid level control valve realizes the function of automatic liquid level regulation. It is simple and convenient to operate, and compared with the rotating float, this liquid level control valve can be used for containers with smaller cross-sections, improving its applicability.

[0008] Preferably, the liquid level rod is provided with a liquid level groove, the float is slidably disposed in the liquid level groove, and the liquid level rod is provided with a plurality of liquid inlet grooves communicating with the liquid level groove.

[0009] By adopting the above technical solution, the liquid in the container enters the liquid level groove of the liquid level rod through the liquid inlet groove, thereby causing the float to float up and down. The operation is simple and convenient. At the same time, the float is located in the liquid level groove, which reduces the possibility of the float being damaged by collision during use or transportation and improves durability.

[0010] Preferably, the valve plug is slidably disposed in the second liquid chamber, the liquid level rod is provided with a transmission chamber, the valve body is provided with a moving groove communicating with the transmission chamber and the second liquid chamber, the valve plug is provided with a moving rod, and the moving rod passes through the moving groove and is inserted into the transmission chamber.

[0011] By adopting the above technical solution, the moving rod slides in the moving groove and inserts into the transmission cavity, which improves the stability of the valve plug movement and the stability of the valve plug when blocking the through groove, thereby improving the valve sealing and closing stability.

[0012] Preferably, a limiting block is slidably disposed inside the transmission cavity, the limiting block is connected to the moving rod, and the limiting block can abut against the inner wall of the transmission cavity.

[0013] By adopting the above technical solution, when the limiting block abuts against the inner wall of the transmission cavity, the valve plug blocks the through groove. Setting the limiting block reduces the possibility of the valve plug moving and causing the moving rod to disengage from the moving groove, thereby further improving the stability of the valve plug movement.

[0014] Preferably, the transmission assembly includes a first transmission pipe, a second transmission pipe, a transmission valve, and a drive assembly. The first transmission pipe is disposed on the valve body and the liquid level rod and connects the first liquid chamber and the transmission chamber. The second transmission pipe is disposed on the liquid level rod and connects the transmission chamber. The transmission valve is disposed on the second transmission pipe and is used to control the opening and closing of the second transmission pipe. The drive assembly is used to drive the transmission valve to open and close according to the up and down movement of the float.

[0015] By adopting the above technical solution, the first transmission pipe connects the first liquid chamber and the transmission chamber, allowing liquid to be added from the valve body into the transmission chamber. The second transmission pipe is used to discharge the liquid in the transmission chamber into the container. When the liquid level in the container rises, it causes the float to rise and closes the transmission valve through the drive assembly, thereby sealing the second transmission pipe. At this time, the liquid continues to be injected into the transmission chamber through the first transmission pipe, thereby pushing the valve plug to rise through the moving rod until it blocks the through groove, automatically shutting off the valve. When the liquid level in the container drops after use, the float falls and opens the transmission valve through the drive assembly. The liquid in the transmission chamber is discharged into the container through the second transmission pipe. The pressure in the transmission chamber drops, causing the valve plug to fall and no longer block the through groove, thereby opening the valve body valve and continuing to inject liquid into the container. The operation is simple and convenient, and easy to use.

[0016] Preferably, the drive assembly includes a drive rack and a drive gear. The liquid level rod has a rack groove communicating with the liquid level tank. The second transmission pipe passes through the rack groove. The transmission valve is disposed in the rack groove. The drive gear is rotatably disposed in the rack groove and rotatably connected to the transmission valve. The rotation of the drive gear can drive the transmission valve to open and close. The drive rack is slidably disposed in the rack groove and connected to the float. The drive rack can mesh with the drive rack.

[0017] By adopting the above technical solution, when the float rises, the drive rack in the rack groove rises with the float until it meshes and drives the drive gear to rotate, thereby closing the transmission valve and realizing the drive. When the float falls, the drive rack falls with it, thereby driving the drive gear to rotate and opening the transmission valve. The operation is simple and convenient, and easy to use.

[0018] Preferably, the float is provided with a connecting rod, which connects the float and the drive rack. The connecting rod is inserted into the rack groove and can slide within the rack groove.

[0019] By adopting the above technical solution, the connecting rod connects the float and the drive rack and slides in the rack groove, thereby improving the stability of the drive rack sliding up and down.

[0020] Preferably, the liquid level rod is provided with an auxiliary groove communicating with the liquid level tank. An auxiliary rack is slidably arranged in the auxiliary groove and connected to a float. An auxiliary gear is rotatably arranged in the auxiliary groove and the auxiliary rack can mesh with the auxiliary gear. The liquid level rod is provided with a gear groove that connects the auxiliary groove and the rack groove. A plurality of connecting gears are rotatably arranged in the gear groove and mesh one by one. The connecting gear at one end meshes with the auxiliary gear, and the connecting gear at the other end meshes with the drive gear.

[0021] By adopting the above technical solution, when the float rises, the auxiliary rack meshes and drives the auxiliary gear to rotate, thereby assisting the drive gear to rotate through the connecting gear. By setting the auxiliary rack to mesh with the auxiliary gear, on the one hand, the assistance of the drive gear to rotate is improved, and on the other hand, the possibility of the float losing balance due to the drive gear pressing against the drive rack, causing the drive rack to tilt, is reduced, thus improving the stability of the drive rack meshing with the electric drive gear to rotate.

[0022] Preferably, the valve body is provided with an adjustment groove communicating with the auxiliary groove, an adjustment plate is slidably arranged in the adjustment groove, the adjustment plate passes through the first transmission pipe, the adjustment plate is provided with a liquid passage groove communicating with the first transmission pipe, the adjustment plate is provided with a first adjustment rack, a plurality of adjustment gears are rotatably arranged in the adjustment groove, the adjustment gear at one end meshes with the auxiliary gear, the adjustment gear at the other end can mesh with the first adjustment rack, and an adjustment cylinder is provided in the adjustment groove, the piston rod of the adjustment cylinder is connected to the adjustment plate.

[0023] By adopting the above technical solution, when the liquid level control valve needs to be manually closed during use, the regulating cylinder is activated to move the regulating plate, causing the first regulating rack to mesh and drive the regulating gear to rotate. This, in turn, drives the drive gear to rotate through the auxiliary gear and connecting gear to close the transmission valve. The continuously entering liquid in the transmission chamber pushes the moving rod to block the valve plug in the through groove, thus closing the liquid level control valve and stopping the liquid inlet. The operation is simple, convenient, and easy to use.

[0024] Preferably, the liquid passage is provided with a sealing plate that can close the first transmission pipe, and a second adjusting rack is slidably provided in the adjusting groove. The second adjusting rack is provided with a driving groove, and the first adjusting rack is provided with a driving rod. The driving rod is inserted into the driving groove and can slide in the driving groove. The auxiliary rack is provided with an auxiliary rod that can be inserted into the adjusting groove. An auxiliary block is slidably provided on the auxiliary rod. The auxiliary block can be inserted into the driving groove and abut against the driving rod. The second adjusting rack can mesh with a second adjusting gear near one end of the first adjusting rack.

[0025] By adopting the above technical solution, when the liquid level in the container is too high and the liquid level control valve is automatically closed, the auxiliary rack rises and the auxiliary block is inserted into the drive groove via the auxiliary rod. If it is necessary to manually open the liquid level control valve for liquid inlet, the regulating cylinder is activated to move the regulating plate. During the movement of the regulating plate, the drive rod is pushed against the auxiliary block and the second regulating rack is moved to mesh and drive the regulating gear to rotate. Thus, the auxiliary gear and the connecting gear drive the drive gear to rotate and open the transmission valve, thereby discharging the liquid in the transmission chamber to reduce the pressure in the transmission chamber. At this time, the sealing plate in the regulating plate closes the first transmission pipe to prevent liquid from entering the transmission chamber, thereby increasing the liquid discharge speed of the transmission chamber and quickly driving the valve plug to move down to open the liquid level controller, realizing manual emergency valve opening. The operation is simple and convenient, and easy to use. This solution is only used for emergency valve opening for liquid inlet. When there is too much liquid.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a valve body, valve plug, liquid level rod, float, first liquid chamber, second liquid chamber, through groove and transmission assembly, the through groove connects the first liquid chamber and the second liquid chamber of the valve body to connect the liquid source and the container to add liquid into the container. The float slides on the liquid level rod as the liquid level rises and falls. When the float rises to a certain level, it drives the valve plug to rise through the transmission assembly to block the through groove and close the liquid level control valve. When the float falls to a certain level, it drives the valve plug to fall through the transmission assembly to open the through groove and open the liquid level control valve. By moving the float vertically up and down, the cross-sectional space required for the float to move is reduced, so that the invention can be used for containers with smaller cross sections, improving its applicability. 2. By setting up a transmission chamber, a moving rod, a moving groove, a first transmission pipe, a second transmission pipe, a transmission valve, and a drive assembly, the first transmission pipe connects the first liquid chamber and the transmission chamber. The second transmission pipe discharges the liquid in the transmission chamber into a container. When the liquid level rises, it drives the float to rise, which in turn drives the transmission valve to close through the drive assembly. The first transmission pipe continues to inject liquid into the transmission chamber to raise the liquid level in the transmission chamber, thereby squeezing the moving rod. The moving rod moves in the moving groove to drive the valve plug to rise and close the through groove, thus completing the automatic closure of the valve. The operation is simple and convenient, and easy to use. 3. By setting up a drive rack, drive gear, and rack groove, when the float rises with the liquid level, it drives the drive rack to rise in the rack groove. The drive rack rises until it meshes and drives the drive gear to rotate. The rotation of the drive gear then drives the transmission valve to close, thus achieving the drive. When the float falls with the liquid level, the drive rack falls with it. During this process, it drives the drive gear to rotate and close the transmission valve. The operation is simple and convenient, and easy to use. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of a differential buoyancy type dual-chamber liquid level control valve provided in the embodiments of this application.

[0028] Figure 2 It is a cross-sectional view used to show the internal structure of the valve body.

[0029] Figure 3 It is a cross-sectional view used to show the internal structure of the liquid level gauge.

[0030] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. First liquid chamber; 12. Second liquid chamber; 13. Through groove; 14. Adjusting groove; 15. Moving groove; 151. Moving rod; 16. Valve plug; 2. Liquid level rod; 21. Liquid level groove; 211. Float; 212. Connecting rod; 22. Liquid inlet groove; 23. Transmission chamber; 231. Limiting block; 24. Rack groove; 25. Auxiliary groove; 26. Gear groove; 3. Transmission assembly; 31. First transmission pipe; 3 2. Second transmission pipe; 33. Transmission valve; 34. Drive assembly; 341. Drive rack; 342. Drive gear; 4. Adjusting plate; 41. Liquid passage groove; 42. Sealing plate; 43. First adjusting rack; 431. Drive rod; 44. Adjusting cylinder; 45. Second adjusting rack; 451. Drive groove; 46. Adjusting gear; 5. Auxiliary rack; 51. Auxiliary gear; 511. Connecting gear; 52. Auxiliary rod; 53. Auxiliary block. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a differential buoyancy type dual-chamber liquid level control valve. (Refer to...) Figures 1 to 3 The valve body includes a valve body 1, a valve plug 16, a level rod 2, and a float 211. The valve body 1 is an L-shaped square pipe; in other embodiments, it can be an L-shaped circular pipe. A first liquid chamber 11 and a second liquid chamber 12 are provided within the valve body 1, connected by a through groove 13. The valve plug 16 is slidably disposed within the second liquid chamber 12 and can seal the through groove 13. The level rod 2 is vertically fixed to the bottom wall of the valve body 1. A level groove 21 is provided within the level rod 2. Several inlet grooves 22 communicating with the level groove 21 are provided on the side and bottom walls of the level rod 2. The float 211 is slidably disposed within the level groove 21. The valve body 1 is provided with a transmission assembly 3, which drives the valve plug 16 to move up and down according to the up-and-down movement of the float 211. The liquid level in the container causes the float ball 211 to move, which in turn drives the valve plug 16 to move via the transmission assembly 3, thereby controlling the opening and closing of the valve body 1 and achieving liquid level control. This is simple and convenient to operate and is also suitable for containers with limited cross-sectional space, thus improving applicability.

[0033] To improve stability during use, refer to Figure 2The level rod 2 has a transmission chamber 23 above the level tank 21. The valve body 1 has a moving groove 15 connecting the transmission chamber 23 and the second liquid chamber 12. A moving rod 151 is slidably mounted in the moving groove 15 and sealed to the moving rod 151. The moving rod 151 is inserted into the second liquid chamber 12 and fixedly connected to the bottom wall of the valve plug 16. A limiting block 231 is slidably mounted in the transmission chamber 23 and can abut against the top wall of the transmission chamber 23. The moving rod 151 is inserted into the transmission chamber 23 and fixedly connected to the top wall of the limiting block 231. When the valve plug 16 abuts against the closed through groove 13, the limiting block 231 abuts against the top wall of the transmission chamber 23. The valve plug 16 is connected to the limiting block 231 through the moving rod 151, thereby improving the stability of the movement of the valve plug 16 and improving the overall stability of the valve.

[0034] For ease of use, please refer to Figure 2 and Figure 3 The transmission assembly 3 includes a first transmission pipe 31, a second transmission pipe 32, a transmission valve 33, and a drive assembly 34 (the internal structure of the transmission valve 33 is not shown in detail). The first transmission pipe 31 is L-shaped and fixedly connected to the valve body 1 and the liquid level rod 2, connecting the first liquid chamber 11 and the transmission chamber 23. The second transmission pipe 32 is fixedly mounted on the liquid level rod 2 and communicates with the transmission chamber 23. The cross-section of the second transmission pipe 32 is larger than that of the first transmission pipe 31. The transmission valve 33 is mounted on the second transmission pipe 32 to control the opening and closing of the second transmission pipe 32. The drive assembly 34 is used to drive the transmission valve 33 to open and close according to the up and down movement of the float 211. The drive assembly 34 controls the opening and closing of the transmission valve 33 according to the liquid level of the float 211, thereby controlling the pressure in the transmission chamber 23 to move the valve plug 16. The operation is simple and convenient, improving the ease of use.

[0035] To improve ease of use, refer to Figure 2 and Figure 3 The drive assembly 34 includes a pair of drive racks 341 and a pair of drive gears 342. Two rack grooves 24 are provided on the inner wall of the liquid level tank 21. The drive racks 341 are slidably disposed within the rack grooves 24, and a connecting rod 212 is slidably disposed within each rack groove 24. The connecting rod 212 is fixedly connected to the drive racks 341 and the float 211. A second transmission pipe 32 passes through the rack grooves 24, and a transmission valve 33 is disposed within the rack grooves 24. The drive gears 342 are rotatably disposed on the side wall of the transmission valve 33, and their rotation controls the opening and closing of the transmission valve 33, acting as a switch for the rotation of the transmission valve 33. When the drive racks 341 slide upwards, they mesh and drive the drive gears 342 to rotate. When the drive racks 341 rise with the float 211, they mesh and drive the drive gears 342 to rotate, thereby closing the transmission valve 33 and achieving drive operation. This method is simple, convenient, and easy to use.

[0036] To improve control stability, refer to Figure 3 The inner wall of the level tank 21, away from the rack groove 24, has two auxiliary grooves 25. An auxiliary rack 5 is slidably mounted within each auxiliary groove 25. A connecting rod 212 is also mounted within the auxiliary groove 25 and connects the auxiliary rack 5 to the float 211. A pair of auxiliary gears 51, capable of meshing with the auxiliary rack 5, are rotatably mounted within the auxiliary groove 25. The size and number of teeth of the auxiliary gears 51 are the same as those of the drive gear 342. The size and number of teeth of the auxiliary rack 5 are the same as those of the drive rack 341. The level rod 2 has a gear groove 26 inside, connecting the auxiliary groove 25 and the rack groove 24. Several connecting gears 511 are rotatably mounted within the gear groove 26. The connecting gears 511 mesh one-to-one, and the connecting gears 511 at both ends respectively mesh with the auxiliary gears 51 and the drive gear 342. The auxiliary rack 5 and the drive rack 341 are located on both sides of the float 211 and mesh with the auxiliary gear 51 and the drive gear 342 simultaneously after rising, reducing the possibility of the drive rack 341 skewing and thus improving the stability of control.

[0037] To enable manual control, refer to Figure 1 and Figure 3 The valve body 1 has an L-shaped adjustment groove 14 at its bottom that communicates with the auxiliary groove 25. The first transmission pipe 31 passes through the adjustment groove 14. An adjustment plate 4 is also slidably installed in the adjustment groove 14. The adjustment plate 4 passes through the first transmission pipe 31 and has a liquid passage groove 41 that connects to the first transmission pipe 31 to facilitate normal liquid passage. A first adjustment rack 43 is fixedly installed along the length of the adjustment plate 4 near the liquid level rod 2. Several adjustment gears 46 are rotatably installed in the adjustment groove 14 and the auxiliary groove 25. The adjustment gears 46 are arranged vertically and mesh one by one. The two uppermost adjustment gears 46 have different thicknesses. The lower adjustment gear 46 meshes with the auxiliary gear 51, and the uppermost adjustment gear 46 can mesh with the first adjustment rack 43. An adjustment cylinder 44 is installed in the adjustment groove 14. The adjustment cylinder 44 is mostly a multi-stage cylinder, and the piston rod of the adjustment cylinder 44 is fixedly connected to the adjustment plate 4. In other embodiments, the regulating cylinder 44 can be replaced by a motor lead screw structure to drive the regulating plate 4 to move. When the valve needs to be manually closed when it is open, the regulating cylinder 44 is activated to drive the regulating plate 4 to move, thereby driving the first regulating rack 43 to mesh and drive the regulating gear 46 to rotate. This, through the transmission of the auxiliary gear 51, the connecting gear 511 and the drive gear 342, closes the transmission valve 33. The pressure in the transmission chamber 23 pushes the valve plug 16 to rise and block the through hole, thus completing the manual valve closure.

[0038] To improve the functionality of manual control, refer to Figure 1 and Figure 3A sealing plate 42, capable of sealing the first transmission pipe 31, is fixedly installed inside the liquid passage 41. A second adjusting rack 45 is slidably installed below the first adjusting rack 43 on the inner sidewall of the adjusting groove 14. A driving groove 451 is provided through the second adjusting rack 45 along its length. A driving rod 431, which is inserted into and can slide within the driving groove 451, is fixedly installed on the bottom wall of the adjusting plate 4. After sliding, the second adjusting rack 45 can mesh with the upper second adjusting gear 46. The second adjusting rack 45 is closer to the adjusting gear 46 than the first adjusting rack 43. An auxiliary rack 5 is provided with an auxiliary rod 52. An auxiliary block 53 is slidably installed on the top wall of the auxiliary rod 52 through a slider structure. The auxiliary block 53 can be inserted into and partially pass through the driving groove 451 and abut against the driving rod 431 and the inner wall of the driving groove 451. When the valve is closed, the float 211 is in a high position, the auxiliary rod 52 is inserted into the adjustment groove 14, and the auxiliary block 53 is inserted into the drive groove 451. At this time, the adjustment cylinder 44 is activated to drive the adjustment plate 4 to move. The drive rod 431 pushes the auxiliary block 53, thereby driving the second adjustment rack 45 to move. The second adjustment gear 46 meshes with the adjustment rack, thereby opening the transmission valve 33 through the transmission of the auxiliary gear 51, the connecting gear 511 and the drive gear 342. The pressure in the transmission chamber 23 pushes the valve plug 16 to rise and block the through hole, completing the manual opening of the valve. At the same time, the sealing plate 42 blocks the first transmission pipe 31, increases the pressure relief speed in the transmission chamber 23, and improves the response speed of manual valve opening.

[0039] The implementation principle of a differential buoyancy-type dual-chamber liquid level control valve according to an embodiment of this application is as follows: The valve is installed inside a container such that the first liquid chamber 11 is connected to the liquid inlet pipe, and the second liquid chamber 12 is connected to the inside of the container. A liquid level rod 2 is inserted into the container, and the liquid inside the container enters the liquid level tank 21 through the inlet tank 22, raising the float 211. When the liquid level in the container is too high, the float 211 rises with the liquid level and drives the drive gear 342 to rotate via the drive rack 341, thereby closing the transmission valve 33. At this time, the first transmission pipe 31 continuously discharges liquid into the transmission chamber 23 and pushes the valve plug 16 upward, causing the valve plug 16 to block the through groove 13, thus closing the valve. When the liquid level drops, the float 211 drops accordingly, and the drive rack 341 drives the drive gear 342 to rotate, thereby opening the transmission valve 33. The liquid in the transmission chamber 23 is discharged into the container through the second transmission pipe 32, thereby reducing the pressure in the transmission chamber 23. This causes the valve plug 16 to drop and no longer block the through groove 13, thus opening the valve and continuously discharging liquid into the container. The float 211 moves longitudinally to open and close the transmission valve 33, saving space for the float 211 and thus enabling the hydraulic control valve to be used in containers with smaller cross-sections, improving its applicability.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A differential buoyancy type dual-chamber liquid level control valve, characterized in that: The valve body (1) includes a valve plug (16), a level rod (2), and a float (211). The valve body (1) is provided with a first liquid chamber (11) and a second liquid chamber (12). The valve body (1) is provided with a through groove (13) connecting the first liquid chamber (11) and the second liquid chamber (12). The valve plug (16) is slidably disposed in the valve body (1) and can block the through groove (13). The level rod (2) is disposed on the valve body (1). The float (211) is slidably disposed on the level rod (2). The valve body (1) is provided with a transmission assembly (3). The transmission assembly (3) is used to drive the valve plug (16) to move up and down according to the up and down movement of the float (211).

2. The differential buoyancy type dual-chamber liquid level control valve according to claim 1, characterized in that: The liquid level rod (2) is provided with a liquid level groove (21), the float (211) is slidably disposed in the liquid level groove (21), and the liquid level rod (2) is provided with a plurality of liquid inlet grooves (22) that communicate with the liquid level groove (21).

3. The differential buoyancy type dual-chamber liquid level control valve according to claim 1, characterized in that: The valve plug (16) is slidably disposed in the second liquid chamber (12), the liquid level rod (2) is provided with a transmission chamber (23), the valve body (1) is provided with a moving groove (15) connecting the transmission chamber (23) and the second liquid chamber (12), the valve plug (16) is provided with a moving rod (151), and the moving rod (151) passes through the moving groove (15) and is inserted into the transmission chamber (23).

4. A differential buoyancy-type dual-chamber liquid level control valve according to claim 3, characterized in that: A limiting block (231) is slidably disposed inside the transmission cavity (23). The limiting block (231) is connected to the moving rod (151). The limiting block (231) can abut against the inner wall of the transmission cavity (23).

5. A differential buoyancy-type dual-chamber liquid level control valve according to claim 3, characterized in that: The transmission assembly (3) includes a first transmission pipe (31), a second transmission pipe (32), a transmission valve (33), and a drive assembly (34). The first transmission pipe (31) is disposed on the valve body (1) and the liquid level rod (2) and connects the first liquid chamber (11) and the transmission chamber (23). The second transmission pipe (32) is disposed on the liquid level rod (2) and connects the transmission chamber (23). The transmission valve (33) is disposed on the second transmission pipe (32) and is used to control the opening and closing of the second transmission pipe (32). The drive assembly (34) is used to drive the transmission valve (33) to open and close according to the up and down movement of the float (211).

6. A differential buoyancy type dual-chamber liquid level control valve according to claim 5, characterized in that: The drive assembly (34) includes a drive rack (341) and a drive gear (342). The liquid level rod (2) is provided with a rack groove (24) that communicates with the liquid level tank (21). The second transmission pipe (32) passes through the rack groove (24). The transmission valve (33) is provided in the rack groove (24). The drive gear (342) is rotatably provided in the rack groove (24) and is rotatably connected to the transmission valve (33). The rotation of the drive gear (342) can drive the transmission valve (33) to open and close. The drive rack (341) is slidably provided in the rack groove (24) and is connected to the float (211). The drive rack (341) can mesh with the drive rack (341).

7. A differential buoyancy-type dual-chamber liquid level control valve according to claim 6, characterized in that: The float (211) is provided with a connecting rod (212), which connects the float (211) and the drive rack (341). The connecting rod (212) is inserted into the rack groove (24) and can slide within the rack groove (24).

8. A differential buoyancy-type dual-chamber liquid level control valve according to claim 6, characterized in that: The liquid level rod (2) is provided with an auxiliary groove (25) that communicates with the liquid level tank (21). An auxiliary rack (5) is slidably arranged in the auxiliary groove (25). The auxiliary rack (5) is connected to the float (211). An auxiliary gear (51) is rotatably arranged in the auxiliary groove (25). The auxiliary rack (5) can mesh with the auxiliary gear (51). The liquid level rod (2) is provided with a gear groove (26). The gear groove (26) connects the auxiliary groove (25) and the rack groove (24). A plurality of connecting gears (511) are rotatably arranged in the gear groove (26). The connecting gears (511) mesh one by one. The connecting gear (511) at one end meshes with the auxiliary gear (51), and the connecting gear (511) at the other end meshes with the drive gear (342).

9. A differential buoyancy type dual-chamber liquid level control valve according to claim 8, characterized in that: The valve body (1) is provided with an adjustment groove (14) communicating with the auxiliary groove (25). An adjustment plate (4) is slidably arranged in the adjustment groove (14). The adjustment plate (4) passes through the first transmission pipe (31). The adjustment plate (4) is provided with a liquid passage groove (41) to communicate with the first transmission pipe (31). The adjustment plate (4) is provided with a first adjustment rack (43). A plurality of adjustment gears (46) are rotatably arranged in the adjustment groove (14). The adjustment gear (46) at one end meshes with the auxiliary gear (51). The adjustment gear (46) at the other end can mesh with the first adjustment rack (43). An adjustment cylinder (44) is provided in the adjustment groove (14). The piston rod of the adjustment cylinder (44) is connected to the adjustment plate (4).

10. A differential buoyancy type dual-chamber liquid level control valve according to claim 9, characterized in that: The liquid passage (41) is provided with a sealing plate (42) that can close the first transmission pipe (31). The adjustment groove (14) is also slidably provided with a second adjustment rack (45). The second adjustment rack (45) is provided with a drive groove (451). The first adjustment rack (43) is provided with a drive rod (431). The drive rod (431) is inserted into the drive groove (451) and can slide in the drive groove (451). The auxiliary rack (5) is provided with an auxiliary rod (52) that can be inserted into the adjustment groove (14). An auxiliary block (53) is slidably provided on the auxiliary rod (52). The auxiliary block (53) can be inserted into the drive groove (451) and abut against the drive rod (431). The second adjustment rack (45) can mesh with a second adjustment gear (46) near one end of the first adjustment rack (43).

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