Control device for adjusting capacity metering at single point

Abstract

The utility model relates to the field of automatic metering control systems, in particular to a single-point-position capacity metering adjusting control device which comprises a water inlet pipe and a stand column. The outer wall of the rear end of the water inlet pipe is fixedly connected to the water inlet end of a first electromagnetic valve, the water outlet end of the first electromagnetic valve is connected with an adjusting and metering assembly used for adjusting and metering, and a flowmeter is arranged at the rear end of the adjusting and metering assembly. When the first water passing hole and the second water passing hole in the water blocking block are communicated with each other, the water flow speed can be increased, when the first water passing hole and the second water passing hole are not communicated with each other, the water flow speed can be reduced, and the problems that an existing control device for adjusting capacity metering at a single point position is usually difficult to adjust and use a metering mechanism, and the metering efficiency is low are solved. And when the flow velocity is too high, the flow velocity is difficult to quickly reduce by controlling the water blocking mechanism.

Description

Technical Field

[0001] The utility model belongs to the field of automatic metering control systems, and in particular relates to a control device for single-point regulating capacity metering. Background Art

[0002] In industrial production, metering control devices are one of the most important equipment. They are widely used in various occasions that require precise measurement and control of fluid flow, such as petroleum, chemical, metallurgy, electric power, pharmaceutical and other industries. In the industrial production process, single-point adjustment metering is a common control method, which is usually used to adjust and control parameters such as flow, pressure, and temperature of production equipment. However, the existing single-point adjustment capacity metering control device is usually difficult to adjust and use the metering mechanism. When the flow rate is too large, it is difficult to quickly reduce the flow rate by controlling the water blocking mechanism, which needs further improvement. Utility Model Content

[0003] In order to overcome the problem that the existing single-point adjustable capacity metering control device is usually difficult to adjust and use the metering mechanism, and it is difficult to quickly reduce the flow rate by controlling the water blocking mechanism when the flow rate is too large, a single-point adjustable capacity metering control device is proposed.

[0004] The technical scheme of the utility model is: a control device for single-point regulating capacity metering, comprising a water inlet pipe and a column; the rear end outer wall of the water inlet pipe is fixedly connected to the water inlet end of a first solenoid valve, the water outlet end of the first solenoid valve is connected with a regulating metering component for regulating metering, a flow meter is arranged at the rear end of the regulating metering component, the water outlet end of the flow meter is fixedly connected to a first fixed pipe through a pipe body, the right end outer wall of the first fixed pipe is fixedly connected to the inner wall of the water inlet end of a second solenoid valve, the left end of the first fixed pipe is fixedly connected to a second water storage tank, The outer wall of the water outlet at the lower end is fixedly connected to the inner wall of the water inlet end of the third solenoid valve, the inner wall of the water outlet end of the third solenoid valve is fixedly connected to the first drain pipe, a float is movably arranged inside the second water storage tank, a float rod is fixedly connected to the upper end of the float, a first rack is fixedly connected to the upper end of the float, a column is arranged outside the water inlet pipe, a second fixed column is fixedly connected to the outer wall of the column, a gear ring is rotatably installed on the outer wall of the second fixed column, the gear ring and the first rack are meshed with each other, a limiting sleeve is fixedly connected to the inner wall of the second water storage tank, and the inner wall of the first solenoid valve fits the outer wall of the float rod;

[0005] The regulating and metering component includes a water pipe, a first trough body, a water blocking box, a second trough body, a sealing box, a through hole, a lifting rod, a water blocking block, a first water hole, a connecting block, a fixing tube, an electric cylinder, a lifting plate, a first electromagnet, a second rack, a fixing plate, a first fixing column, a second electromagnet and a second water hole; the outer wall of the water outlet port of the first solenoid valve is fixedly connected to the water pipe, the rear end of the water pipe is fixedly connected to the inner wall of the water inlet port of the flow meter through the pipe body, the first trough body is penetrated at the upper and lower ends of the water pipe, the inner wall of the first trough body is fixedly connected to the water blocking box, the upper end of the water blocking box is provided with a second trough body, the upper part of the outer wall of the second trough body is fixedly connected to the sealing box, the lower end of the sealing box is open, the upper center of the sealing box is penetrated to open a through hole, and the inner wall of the through hole is movably provided with a lifting and lowering device. The cam is provided with a second gear, and the second gear is meshed with the outer wall of the gear ring. The outer wall of the second gear is provided with a fixed plate. The lower end of the fixed plate is provided with a first fixed column. The lower end of the first fixed column is provided with a second electromagnet. The outer wall of the sealing box is provided with a connecting block. The outer wall of the connecting block is provided with a fixing cylinder. The inner wall of the fixing cylinder is provided with an electric cylinder. The upper end of the output shaft of the electric cylinder is provided with a lifting plate. The upper end of the lifting plate is provided with a first electromagnet. The lower end of the lifting rod passes through a through hole and is fixed with a water blocking block. The front and rear ends of the water blocking block are provided with evenly distributed first water holes. The front and rear ends of the water blocking box are provided with second water holes. When the water blocking block is lifted in a vertical direction, the central axis of the first water hole passes through the central axis of the second water hole.

[0006] Preferably, when in use, water or other fluid is connected to the water inlet pipe, and the fluid will enter the water pipe through the first solenoid valve. The water blocking box is closed inside, and the fluid will flow from between the water pipe and the water blocking box to the flow meter. Then, the flow meter can be turned on to measure the flow rate, and the second solenoid valve is closed, and the fluid will flow into the second water storage tank through the first fixed pipe. The third solenoid valve is closed or the flow rate of the third solenoid valve is reduced, so that the flow rate at the first drain pipe is fixed. When the flow rate at the water inlet pipe is large, the float floats up, which will cause the float rod to move upward. The float rod is limited by the limit sleeve, so that the first rack moves upward stably in the vertical direction. The first rack is meshed with the gear ring, which will cause the gear ring to rotate, so that the second rack moves downward through the meshing action of the gear ring and the second rack, thereby realizing lifting and lowering. The rod moves downward along the inner wall of the through hole, so that the water blocking block moves downward. When the first water hole and the second water hole on the water blocking block are interconnected, the water flow rate can be increased. When the first water hole and the second water hole are not interconnected, the water flow rate will be reduced. The downward movement of the water blocking block will eventually make the first water hole and the second water hole not interconnected. When the lifting rod needs to be electrically lifted, the electric cylinder is turned on to move the lifting plate upward, and finally the first electromagnet and the second electromagnet are turned on to make the first electromagnet and the second electromagnet magnetically attracted to each other. The height of the lifting rod can be quickly adjusted by upgrading the piston rod of the electric cylinder, which solves the problem that the existing single-point capacity adjustment control device is usually difficult to adjust and use the metering mechanism, and when the flow rate is too large, it is difficult to quickly reduce the flow rate by controlling the water blocking mechanism.

[0007] Preferably, the outer diameter of the float is smaller than the inner diameter of the second water tank, and the upper end of the second water tank is open. The outer diameter of the float is smaller than the inner diameter of the second water tank, so that the float can float after the liquid enters the second water tank.

[0008] Preferably, two limiting rings are fixedly connected to the outer wall of the second fixing column, and the sides of the two limiting rings close to each other are in contact with the two side surfaces of the gear ring. The arrangement of the two limiting rings is conducive to the stable rotation of the gear ring.

[0009] Preferably, the first electromagnet is located directly below the second electromagnet, and the central axis of the first electromagnet and the central axis of the second electromagnet are collinear. When the first electromagnet moves upward and finally abuts against the lower end of the second electromagnet, the first electromagnet and the second electromagnet are turned on so that they are magnetically attracted to each other. The lifting and lowering of the first electromagnet can be used to realize the lifting and lowering of the second rack, thereby facilitating the electric adjustment of the lifting and lowering of the lifting rod.

[0010] Preferably, the inner diameter of the second water hole is larger than the inner diameter of the first water hole, and the spacing between two adjacent first water holes is equal to the spacing between two adjacent second water holes. By moving the water blocking block up and down, the first water hole and the second water hole can be completely connected or partially connected, and different degrees of water blocking can be achieved, so that the flow rate in the water pipe can be quickly adjusted.

[0011] Preferably, the water pipe is a hollow structure, and there is a gap between the outer wall of the water blocking box and the inner wall of the water pipe. The water blocking box is arranged to improve water blocking, and water can also flow through the gap between the water blocking box and the water pipe.

[0012] Preferably, the water outlet end of the second solenoid valve is fixedly connected to the first water storage tank through a tube body, the lower end of the first water storage tank is fixedly connected with a second fixed pipe, the lower end of the second fixed pipe is fixedly connected to the inner wall of the water inlet port of the electric valve, and the inner wall of the water outlet port of the electric valve is fixedly connected with a second drain pipe. When the second solenoid valve is opened, water can also flow into the first water storage tank for temporary storage, and opening the electric valve can release the water in the first water storage tank through the second drain pipe.

[0013] Beneficial effects of the utility model:

[0014] 1. By connecting water or other fluid to the water inlet pipe, the fluid will enter the water pipe through the first solenoid valve. The water blocking box is closed inside, and the fluid will flow from the water pipe and the water blocking box to the flow meter. Then, the flow meter can be turned on to measure the flow rate. The second solenoid valve is closed, and the fluid will flow into the second water storage tank through the first fixed pipe. The third solenoid valve is closed or the flow rate of the third solenoid valve is reduced to make the flow rate at the first drain pipe fixed. When the flow rate at the water inlet pipe is large, the float floats up, which will cause the float rod to move upward. The float rod is limited by the limit sleeve, so that the first rack moves upward stably in the vertical direction. The first rack is meshed with the gear ring, which will cause the gear ring to rotate, so that the second rack moves downward through the meshing action of the gear ring and the second rack, thereby realizing the lifting rod along the The inner wall of the through hole moves downward, so that the water blocking block moves downward. When the first water hole and the second water hole on the water blocking block are interconnected, the water flow rate can be increased. When the first water hole and the second water hole are not interconnected, the water flow rate will be reduced. The downward movement of the water blocking block will eventually make the first water hole and the second water hole not interconnected. When the lifting rod needs to be electrically lifted, the electric cylinder is turned on to move the lifting plate upward, and finally the first electromagnet and the second electromagnet are turned on to make the first electromagnet and the second electromagnet magnetically attracted to each other. The height of the lifting rod can be quickly adjusted by upgrading the piston rod of the electric cylinder, which solves the problem that the existing single-point control device for adjusting capacity metering is usually difficult to adjust and use the metering mechanism, and when the flow rate is too large, it is difficult to quickly reduce the flow rate by controlling the water blocking mechanism.

[0015] 2. The outer diameter of the float is smaller than the inner diameter of the second water tank, so that after the liquid enters the second water tank, the float can float up. The two limit rings are arranged to facilitate the stable rotation of the gear ring and the stable movement of the lifting rod;

[0016] 3. By moving the water blocking block up and down, the first water hole and the second water hole can be completely connected or partially connected, and different degrees of water blocking can be achieved, so that the flow rate in the water pipe can be quickly adjusted. When the second solenoid valve is opened, the water can also flow into the first water storage tank for temporary storage. Opening the electric valve can release the water in the first water storage tank through the second drain pipe, which is convenient for temporary storage when the water input is too fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 What is shown is a three-dimensional structural schematic diagram of a control device for single-point adjustment capacity measurement of the utility model;

[0018] Figure 2 The schematic diagram of the three-dimensional split structure of the second water storage tank and the floating body of a control device for single-point adjustment capacity measurement of the utility model is shown;

[0019] Figure 3 Shown is a three-dimensional structural schematic diagram of a water pipe of a control device for single-point adjustment capacity metering of the utility model;

[0020] Figure 4 Shown is a three-dimensional structural schematic diagram of an adjusting and metering component of a control device for adjusting capacity metering at a single point of the utility model;

[0021] Figure 5 The three-dimensional structure schematic diagram of the second water hole of a control device for single-point adjustment capacity measurement of the utility model is shown;

[0022] Figure 6 Shown is a schematic diagram of the cross-sectional three-dimensional structure of the interior of a water-blocking box of a control device for single-point adjustment capacity measurement of the utility model;

[0023] Figure 7 What is shown is a three-dimensional structural schematic diagram of a limit sleeve block of a control device for single-point adjustment capacity metering of the utility model.

[0024] The marks in the attached drawings are: 1, water inlet pipe; 2, first solenoid valve; 3, regulating and metering component; 301, water pipe; 302, first tank body; 303, water blocking box; 304, second tank body; 305, sealing box; 306, through hole; 307, lifting rod; 308, water blocking block; 309, first water hole; 310, connecting block; 311, fixing cylinder; 312, electric cylinder; 313, lifting plate; 314, first electromagnet; 315, second rack; 316, fixing plate; 317. first fixed column; 318. second electromagnet; 319. second water hole; 4. flow meter; 5. first fixed pipe; 6. second solenoid valve; 7. first water storage tank; 8. second water storage tank; 9. third solenoid valve; 10. first drain pipe; 11. second fixed pipe; 12. electric valve; 13. second drain pipe; 14. column; 15. second fixed column; 16. limit ring; 17. gear ring; 18. float; 19. float rod; 20. first rack; 21. limit sleeve. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-Figure 7 The utility model provides an embodiment: a control device for single-point regulating capacity metering, comprising a water inlet pipe 1 and a column 14; the rear end outer wall of the water inlet pipe 1 is fixedly connected to the water inlet end of the first solenoid valve 2, the water outlet end of the first solenoid valve 2 is connected with a regulating metering component 3 for regulating metering, the rear end of the regulating metering component 3 is provided with a flow meter 4, the water outlet end of the flow meter 4 is fixedly connected to a first fixed pipe 5 through a pipe body, the right end outer wall of the first fixed pipe 5 is fixedly connected to the inner wall of the water inlet end of the second solenoid valve 6, the left end of the first fixed pipe 5 is fixedly connected to a second water storage tank 8, and the outer wall of the water outlet at the lower end of the second water storage tank 8 is fixedly connected to the inner wall of the water inlet end of the second solenoid valve 6. The inner wall of the water inlet end of the third solenoid valve 9 is connected to the inner wall of the water outlet end of the third solenoid valve 9, and the first drain pipe 10 is fixedly connected. A float 18 is movably arranged inside the second water storage tank 8, and a float rod 19 is fixedly connected to the upper end of the float 18, and a first rack 20 is fixedly connected to the upper end of the float rod 19. A column 14 is arranged outside the water inlet pipe 1, and a second fixed column 15 is fixedly connected to the outer wall of the column 14. A gear ring 17 is rotatably installed on the outer wall of the second fixed column 15, and the gear ring 17 and the first rack 20 are meshed with each other. The inner wall of the second water storage tank 8 is fixedly connected to a limiting sleeve block 21, and the inner wall of the first solenoid valve 2 and the outer wall of the float rod 19 are fitted.

[0027] The regulating and metering assembly 3 includes a water pipe 301, a first tank body 302, a water blocking box 303, a second tank body 304, a sealing box 305, a through hole 306, a lifting rod 307, a water blocking block 308, a first water hole 309, a connecting block 310, a fixing cylinder 311, an electric cylinder 312, a lifting plate 313, a first electromagnet 314, a second rack 315, a fixing plate 316, a first fixing column 317, a second electromagnet 318 and a second water hole 319; the outer wall of the water outlet port of the first solenoid valve 2 is fixed The water pipe 301 is connected, the rear end of the water pipe 301 is fixedly connected to the inner wall of the water inlet port of the flow meter 4 through the pipe body, the upper and lower ends of the water pipe 301 are penetrated with a first slot 302, the inner wall of the first slot 302 is fixedly connected with a water blocking box 303, the upper end of the water blocking box 303 is provided with a second slot 304, the upper part of the outer wall of the second slot 304 is fixedly connected with a sealing box 305, the lower end of the sealing box 305 is open, the upper end of the sealing box 305 is penetrated with a through hole 306, and the inner wall of the through hole 306 is movable A lifting rod 307 is provided, the upper end of the lifting rod 307 is fixedly connected to a second rack 315, the second rack 315 and the outer wall of the gear ring 17 are meshed with each other, the outer wall of the second rack 315 is fixedly connected to a fixing plate 316, the lower end of the fixing plate 316 is fixedly connected to a first fixing column 317, the lower end of the first fixing column 317 is fixedly connected to a second electromagnet 318, the outer wall of the sealing box 305 is fixedly connected to a connecting block 310, the outer wall of the connecting block 310 is fixedly connected to a fixing cylinder 311, and the inner wall of the fixing cylinder 311 is fixedly connected to an electric cylinder 312 The upper end of the output shaft of the electric cylinder 312 is fixedly connected to a lifting plate 313, the upper end of the lifting plate 313 is fixedly connected to a first electromagnet 314, the lower end of the lifting rod 307 passes through the through hole 306 and is fixedly connected to a water blocking block 308, the front and rear ends of the water blocking block 308 are penetrated by uniformly distributed first water holes 309, the front and rear ends of the water blocking box 303 are penetrated by second water holes 319, and when the water blocking block 308 is lifted in the vertical direction, the central axis of the first water hole 309 passes through the central axis of the second water hole 319.

[0028] See also Figure 1 and Figure 7 In this embodiment, the outer diameter of the float 18 is smaller than the inner diameter of the second water storage tank 8, and the upper end of the second water storage tank 8 is open.

[0029] See also Figure 1 and Figure 2 In this embodiment, two limiting rings 16 are fixedly connected to the outer wall of the second fixing column 15 , and the sides of the two limiting rings 16 close to each other are in contact with the two side surfaces of the gear ring 17 .

[0030] See also Figure 1 and Figure 4In this embodiment, the first electromagnet 314 is located directly below the second electromagnet 318, and the central axis of the first electromagnet 314 and the central axis of the second electromagnet 318 are collinear.

[0031] See also Figure 4 and Figure 5 In this embodiment, the inner diameter of the second water through hole 319 is greater than the inner diameter of the first water through hole 309 , and the distance between two adjacent first water through holes 309 is equal to the distance between two adjacent second water through holes 319 .

[0032] See also Figure 6 In this embodiment, the water pipe 301 is a hollow structure, and there is a gap between the outer wall of the water blocking box 303 and the inner wall of the water pipe 301.

[0033] See also Figure 1 In this embodiment, the water outlet end of the second solenoid valve 6 is fixedly connected to the first water storage tank 7 through a tube body, the lower end of the first water storage tank 7 is fixedly connected to a second fixed pipe 11, the lower end of the second fixed pipe 11 is fixedly connected to the inner wall of the water inlet port of the electric valve 12, and the inner wall of the water outlet port of the electric valve 12 is fixedly connected to a second drain pipe 13.

[0034] When working, water or other fluid is connected to the water inlet pipe 1, and the fluid will enter the water pipe 301 through the first solenoid valve 2. The water blocking box 303 is closed inside, and the fluid will flow from between the water pipe 301 and the water blocking box 303 to the flow meter 4. Then, the flow meter 4 can be turned on to measure the flow rate. The second solenoid valve 6 is closed, and the fluid will flow into the second water storage tank 8 through the first fixed pipe 5. The third solenoid valve 9 is closed or the flow rate of the third solenoid valve 9 is reduced, so that the flow rate at the first drain pipe 10 is fixed;

[0035] When the flow rate at the water inlet pipe 1 is relatively large, the float 18 floats up, which will cause the float rod 19 to move upward. The float rod 19 is limited by the limiting sleeve 21, so that the first rack 20 moves upward stably in the vertical direction. The first rack 20 is meshed with the gear ring 17, which will cause the gear ring 17 to rotate. Through the meshing action of the gear ring 17 and the second rack 315, the second rack 315 moves downward, so that the lifting rod 307 moves downward along the inner wall of the through hole 306, so that the water blocking block 308 moves downward. When the first water through hole 309 and the second water through hole 319 on the water blocking block 308 are interconnected, the water flow speed can be increased. When the first water through hole 309 and the second water through hole 319 are not interconnected, the water flow speed will be reduced. The downward movement of the water blocking block 308 will eventually cause the first water through hole 309 and the second water through hole 319 to not be interconnected.

[0036] When the lifting rod 307 needs to be electrically lifted, the electric cylinder 312 is turned on to move the lifting plate 313 upward, and finally the first electromagnet 314 and the second electromagnet 318 are turned on to make the first electromagnet 314 and the second electromagnet 318 magnetically attract each other. The height of the lifting rod 307 can be quickly adjusted by upgrading the piston rod of the electric cylinder 312.

[0037] When the second solenoid valve 6 is opened, water can also flow into the first water storage tank 7 for temporary storage, and the electric valve 12 can be opened to release the water in the first water storage tank 7 through the second drain pipe 13 .

[0038] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A control device for single-point regulating capacity metering, comprising a water inlet pipe (1) and a column (14); characterized in that: The rear end outer wall of the water inlet pipe (1) is fixedly connected to the water inlet end of the first solenoid valve (2); the water outlet end of the first solenoid valve (2) is connected to an adjusting and metering assembly (3) for adjusting and metering; a flow meter (4) is arranged at the rear end of the adjusting and metering assembly (3); the water outlet end of the flow meter (4) is fixedly connected to a first fixed pipe (5) through a pipe body; the right end outer wall of the first fixed pipe (5) is fixedly connected to the inner wall of the water inlet end of the second solenoid valve (6); the left end of the first fixed pipe (5) is fixedly connected to a second water storage tank (8); the outer wall of the water outlet at the lower end of the second water storage tank (8) is fixedly connected to the inner wall of the water inlet end of the third solenoid valve (9); the water outlet of the third solenoid valve (9) is fixedly connected to the inner wall of the water inlet end of the third solenoid valve (9); The inner wall of the end is fixedly connected to a first drainage pipe (10), a float (18) is movably arranged inside the second water storage tank (8), a float rod (19) is fixedly connected to the upper end of the float (18), a first rack (20) is fixedly connected to the upper end of the float rod (19), a column (14) is arranged outside the water inlet pipe (1), a second fixed column (15) is fixedly connected to the outer wall of the column (14), a gear ring (17) is rotatably mounted on the outer wall of the second fixed column (15), the gear ring (17) and the first rack (20) are meshed with each other, the inner wall of the second water storage tank (8) is fixedly connected to a limiting sleeve (21), and the inner wall of the first solenoid valve (2) and the outer wall of the float rod (19) are in contact with each other; The regulating and metering assembly (3) comprises a water passage pipe (301), a first tank body (302), a water blocking box (303), a second tank body (304), a sealing box (305), a through hole (306), a lifting rod (307), a water blocking block (308), a first water passage hole (309), a connecting block (310), a fixing cylinder (311), an electric cylinder (312), a lifting plate (313), a first electromagnet (314), a second rack (315), a fixing plate (316), a first fixing column (317), a second electromagnet (318) and a second water passage hole (319); a first solenoid valve (2) The outer wall of the water outlet port is fixedly connected to a water pipe (301), the rear end of the water pipe (301) is fixedly connected to the inner wall of the water inlet port of the flow meter (4) through a pipe body, the upper and lower ends of the water pipe (301) are penetrated by a first groove body (302), the inner wall of the first groove body (302) is fixedly connected to a water blocking box (303), the upper end of the water blocking box (303) is provided with a second groove body (304), the upper part of the outer wall of the second groove body (304) is fixedly connected to a sealing box (305), the lower end of the sealing box (305) is open, the upper end of the sealing box (305) is penetrated by a through hole (306) at the center, and the through hole (306) The inner wall of the sealing box (305) is movably provided with a lifting rod (307), the upper end of the lifting rod (307) is fixedly connected to a second rack (315), the second rack (315) and the outer wall of the gear ring (17) are meshed with each other, the outer wall of the second rack (315) is fixedly connected to a fixing plate (316), the lower end of the fixing plate (316) is fixedly connected to a first fixing column (317), the lower end of the first fixing column (317) is fixedly connected to a second electromagnet (318), the outer wall of the sealing box (305) is fixedly connected to a connecting block (310), the outer wall of the connecting block (310) is fixedly connected to a fixing cylinder (311), and the inner wall of the fixing cylinder (311) is fixedly connected to an electric The electric cylinder (312) is provided with a lifting plate (313) fixedly connected to the upper end of the output shaft of the electric cylinder (312), a first electromagnet (314) fixedly connected to the upper end of the lifting plate (313), a lower end of the lifting rod (307) passes through the through hole (306) and is fixedly connected to a water blocking block (308), front and rear ends of the water blocking block (308) are provided with uniformly distributed first water holes (309), front and rear ends of the water blocking box (303) are provided with second water holes (319), and when the water blocking block (308) is lifted or lowered in the vertical direction, the central axis of the first water hole (309) passes through the central axis of the second water hole (319).

2. A control device for single-point capacity adjustment according to claim 1, characterized in that: The outer diameter of the float (18) is smaller than the inner diameter of the second water storage tank (8), and the upper end of the second water storage tank (8) is open.

3. The control device for single-point capacity adjustment according to claim 1 is characterized in that: Two limiting rings (16) are fixedly connected to the outer wall of the second fixing column (15), and the sides of the two limiting rings (16) close to each other are in contact with the two side surfaces of the gear ring (17).

4. The control device for single-point capacity adjustment according to claim 1 is characterized in that: The first electromagnet (314) is located directly below the second electromagnet (318), and the central axis of the first electromagnet (314) and the central axis of the second electromagnet (318) are collinear.

5. The control device for single-point capacity adjustment according to claim 1 is characterized in that: The inner diameter of the second water passing hole (319) is greater than the inner diameter of the first water passing hole (309), and the spacing between two adjacent first water passing holes (309) is equal to the spacing between two adjacent second water passing holes (319).

6. The control device for single-point capacity adjustment according to claim 1 is characterized in that: The water pipe (301) is a hollow structure, and a gap exists between the outer wall of the water blocking box (303) and the inner wall of the water pipe (301).

7. The control device for single-point capacity adjustment according to claim 1 is characterized in that: The water outlet end of the second solenoid valve (6) is fixedly connected to the first water storage tank (7) via a tube body, the lower end of the first water storage tank (7) is fixedly connected to a second fixed pipe (11) in a penetrating manner, the lower end of the second fixed pipe (11) is fixedly connected to the inner wall of the water inlet port of the electric valve (12), and the inner wall of the water outlet port of the electric valve (12) is fixedly connected to a second drain pipe (13).

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