Bentonite cement slurry conveying device for diaphragm wall and control method of bentonite cement slurry conveying device

Abstract

The invention relates to the technical field of diaphragm wall construction, in particular to a diaphragm wall bentonite cement slurry conveying device and a control method thereof. Comprising a conveying pipe, a conveying pump, a filtering device, a filtering grid and a control valve assembly, the conveying pump is arranged on the ground, the conveying pump is connected with the conveying pipe, the conveying pipe extends into the stirring pile, the filtering grid is arranged at the end, away from the conveying pump, of the conveying pipe, and the control valve assembly is connected with the filtering device. The filtering device and the control valve assembly are arranged on the conveying pipe, and the control valve assembly is connected to the end, away from the conveying pump, of the filtering device; the flow of cement pumped into the stirring pile is controlled through the conveying pump, the cement is preliminarily filtered through the filtering device, then the cement enters the control valve assembly, the pressure of the cement is regulated and controlled, the stability of the pressure of the output cement is guaranteed, then the cement flows into the stirring pile through the filtering grid, and the construction effect is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of anti-seepage wall construction technology, and in particular to a bentonite cement slurry conveying device and its control method for anti-seepage walls. Background Technology

[0002] A seepage barrier is a diaphragm wall built in a loose permeable layer or in an earth-rock dam to prevent seepage. It is mainly constructed by using a mixing pile machine to spray cement into the soil and mix it thoroughly, so that the cement and soil undergo a physical and chemical reaction to improve the soil strength.

[0003] In current construction methods, cement slurry is prone to clumping during transportation, and the transportation pressure of cement slurry is unstable, resulting in uneven slurry transportation. This can lead to local accumulation or leakage of slurry, thereby affecting the construction strength.

[0004] Therefore, there is an urgent need to provide a bentonite cement slurry conveying device and its control method for seepage prevention walls, which can ensure the stability of slurry conveying pressure compared with existing technologies. Summary of the Invention

[0005] This invention addresses the technical problems existing in the prior art by providing a bentonite cement slurry conveying device and its control method for impermeable walls.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A bentonite cement slurry conveying device for an impermeable wall includes a conveying pipe, a conveying pump, a filter device, a filter grid, and a control valve assembly. The conveying pump is installed on the ground and connected to the conveying pipe. The conveying pipe extends into the mixing pile. The filter grid is installed at the end of the conveying pipe away from the conveying pump. The filter device and the control valve assembly are provided on the conveying pipe. The control valve assembly is connected to the end of the filter device away from the conveying pump. The control valve assembly includes a valve body and a controller. The valve body has a liquid inlet, a first liquid outlet, and a second liquid outlet. The valve body also has a first cavity and a second cavity. The first cavity is connected to the liquid inlet via a first pipe, the first cavity is connected to the first liquid outlet via a second pipe, the second pipe is connected to the second cavity via a third pipe, the second cavity is connected to the first pipe via a fourth pipe, and the second pipe is connected to the second liquid outlet via a fifth pipe. A first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, and a fifth solenoid valve are respectively installed in the first pipe, the second pipe, the third pipe, the fourth pipe, and the fifth pipe. A valve core is installed in the first cavity, and a movable rod is connected between the valve core and the side wall of the first cavity. A spring is sleeved on the outside of the movable rod, and a first pressure sensor is installed inside the movable rod. A coil is installed in the valve body and wound around the outside of the first cavity. A magnet is installed at the position where the valve core connects to the movable rod. The first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the coil, and the first pressure sensor are all electrically connected to the controller.

[0007] Furthermore, the coil is connected to two conducting circuits, which are arranged in parallel. One conducting circuit is connected in series with a first power supply and a first switch, and the other conducting circuit is connected in series with a second power supply and a second switch.

[0008] Furthermore, the positive and negative terminals of the first power supply are set opposite to those of the second power supply; when the first switch is closed, the coil is energized and drives the magnet to move in the direction of compressing the spring; when the second switch is closed, the coil is energized and drives the magnet to move in the direction of stretching the spring.

[0009] Furthermore, the end of the second pipe away from the first cavity is connected to the third cavity, and the end of the fifth pipe away from the second pipe is connected to the third cavity. The first liquid outlet and the second liquid outlet are both connected to the third cavity. The second pipe is set corresponding to the first liquid outlet, and the fifth pipe is set corresponding to the second liquid outlet. The second liquid outlet is provided with a sixth solenoid valve, and the first liquid outlet is provided with a seventh solenoid valve. The sixth solenoid valve and the seventh solenoid valve are both electrically connected to the controller.

[0010] Furthermore, a pressure boosting component is provided inside the third cavity. The pressure boosting component adjusts the pressure value of the liquid flow inside the third cavity by moving within it. The pressure boosting component moves up and down through a connection structure between a motor and a screw.

[0011] Furthermore, a second pressure sensor is provided on the inner wall of the second pipe, and the second pressure sensor is located between the connection between the second pipe and the third pipe and the location where the second solenoid valve is set. A third pressure sensor is provided at the top of the third cavity.

[0012] A control method for a bentonite cement slurry conveying device for an anti-seepage wall includes the following steps: S1. The controller controls the opening degree of the first, second, third, fourth, and fifth solenoid valves and the conduction of their coils based on the first pressure value, specifically as follows: (1) When At this time, the controller controls the opening degree of the first solenoid valve, the third solenoid valve, and the fourth solenoid valve to 100%, controls the opening degree of the second solenoid valve and the fifth solenoid valve to 0%, and controls the first switch S1 to close. (2) When At this time, the controller controls the opening degree of the first solenoid valve to 85%-95%, controls the opening degree of the third and fourth solenoid valves to 10%-15%, and controls the second and fifth solenoid valves to open. (3) When At this time, the controller controls the opening degree of the first solenoid valve to 10%-15%, the opening degree of the third solenoid valve to 55%-65%, and the opening degree of the fourth solenoid valve to 10%-15%; and controls the second and fifth solenoid valves to open. (4) When At this time, the controller controls the opening degree of the third solenoid valve to 100%, controls the opening degree of the fourth solenoid valve and the first solenoid valve to 0%, and controls the second switch S2 to close. In the above formula, This indicates the output set pressure of the valve body. Indicates the first pressure value; S2. When in the situation of (2) and (3) in step S1, the controller controls the opening of the second solenoid valve, the fifth solenoid valve and the sixth solenoid valve and the speed of the motor according to the second pressure value and the third pressure value. S3. Both the first power supply and the second power supply use AC power. The output voltage of the first power supply is set to the first voltage value, and the output voltage of the second power supply is set to the second voltage value. In step S1 (1), the controller dynamically adjusts the first voltage value according to the first pressure value. In step S1 (4), the controller adjusts the second voltage value according to the first pressure value.

[0013] Furthermore, in step S2, the controller controls the opening degrees of the second, fifth, and sixth solenoid valves, as well as the motor speed, based on the second and third pressure values, specifically as follows: (1) When At that time, the controller controls the opening degree of the second solenoid valve to 100%, controls the opening degree of the fifth solenoid valve to 0%, and then controls the speed of the motor to... This causes the booster components to move upwards, when At the same time, the second solenoid valve is closed and the seventh solenoid valve is opened, while the sixth solenoid valve is closed, allowing the liquid in the third cavity to flow out from the first liquid outlet; wherein, the highest position of the pressurizing component moving upward is lower than the top of the first liquid outlet; (2) When At that time, the controller controls the opening degree of the second solenoid valve to 0%, controls the opening degree of the fifth solenoid valve to 100%, and then controls the speed of the motor to be... This causes the booster components to move upwards, when At the same time, the fifth solenoid valve is closed and the sixth solenoid valve is opened, and the seventh solenoid valve is closed, so that the liquid in the third cavity flows out from the second liquid outlet; wherein, the highest position of the pressurizing component moving upward is higher than the top of the first liquid outlet and lower than the top of the second liquid outlet; (3) When At this time, the opening degree of the second, fifth, and sixth solenoid valves is all controlled to be 0%, and the motor is controlled to not work. In the above formula, This indicates the second pressure value. This indicates the third pressure value.

[0014] Furthermore, , The following relationship exists: ; In the above formula, Indicates the first velocity. Indicates the second speed. Indicates the first parameter. This indicates that the second parameter is less than the first parameter.

[0015] Furthermore, in step S3, the controller dynamically adjusts the first voltage value and the second voltage value based on the first pressure value. The specific method is as follows: In step S1, case (1) involves the controller controlling the first voltage value according to the following formula: ; In the above formula, Indicates the first voltage value. This indicates the maximum voltage that the first power supply can output; In step S1, case (4) involves controlling the second voltage value in the following two ways: (1) When At that time, the controller controls the second voltage value according to the following formula: ; In the above formula, Indicates the second voltage value. This indicates the maximum voltage value that the second power supply can output; (2) When At that time, the controller controls the second voltage value according to the following formula: .

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention involves sequentially installing a filter device, a control valve assembly, and a filter mesh on a delivery pipe. The flow rate of cement pumped into the mixing pile is controlled by a delivery pump. The cement is initially filtered by the filter device, then enters the control valve assembly to regulate the cement pressure and ensure the stability of the output cement pressure. Finally, the cement flows into the mixing pile through the filter mesh, ensuring the construction effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the filter grid of the present invention.

[0019] Figure 3 This is a cross-sectional view of the control valve assembly of the present invention.

[0020] Figure 4 This is the present invention. Figure 3 Enlarged view of point A in the middle.

[0021] Figure 5 This is a circuit diagram showing the connection of the coil in this invention.

[0022] Explanation of reference numerals in the attached figures: 1. Valve body; 101. First cavity; 102. Second cavity; 103. Third cavity; 104. Liquid inlet; 105. First liquid outlet; 106. Second liquid outlet; 107. First pipe; 108. Second pipe; 109. Third pipe; 110. Fourth pipe; 111. Fifth pipe; 2. Valve core; 3. Movable rod; 31. First telescopic rod; 32. Second telescopic rod; 4. Spring; 5. First pressure sensor; 6. Magnet; 7. Fifth solenoid valve; 8. Coil ; 9. Second pressure sensor; 10. Third pressure sensor; 11. Pressure booster plate; 12. Screw; 13. First gear; 14. Second gear; 15. Chain; 16. Motor; 17. First solenoid valve; 18. Second solenoid valve; 19. Third solenoid valve; 20. Fourth solenoid valve; 21. Sixth solenoid valve; S1. First switch; S2. Second switch; 22. Mixing pile; 23. Delivery pipe; 24. Delivery pump; 25. Filter device; 26. Filter mesh; 27. Seventh solenoid valve. Detailed Implementation

[0023] The technical solution of the present invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention. It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] like Figure 1 , Figure 2 As shown, this invention provides a bentonite cement slurry conveying device for an impermeable wall, including a conveying pipe 23, a conveying pump 24, a filter device 25, a filter mesh 26, and a control valve assembly. The conveying pump is installed on the ground and connected to the conveying pipe, which extends into the mixing pile 22. A filter mesh is installed at the end of the conveying pipe away from the conveying pump. The filter mesh has two layers, with the outer layer having a smaller pore size and the inner layer having a larger pore size. The conveying pipe is equipped with a filter device and a control valve assembly, which is connected to the filter device and is located at the end of the filter device away from the conveying pump. The conveying pump controls the flow rate of cement pumped into the mixing pile. The filter device performs preliminary filtration of the cement, and then the cement enters the control valve assembly to regulate the cement pressure, ensuring a stable output cement pressure. Finally, the cement flows into the mixing pile through the filter mesh, ensuring the construction effect.

[0025] like Figure 3 , Figure 4, Figure 5 As shown, the control valve assembly includes a valve body 1 and a controller. The valve is provided with a liquid inlet 104, a first liquid outlet 105, and a second liquid outlet 106. The first liquid outlet 105 and the second liquid outlet 106 are located on one side of the valve. The liquid inlet 104 is located on the side wall of the valve body 1 opposite to the first liquid outlet 105. The valve is provided with a first cavity 101, a second cavity 102, and a third cavity 103. The lower end of the first cavity 101 is connected to the liquid inlet 104 through a first pipe 107. The side wall of the first cavity 101 is connected to the third cavity 103 through a second pipe 108. The third cavity 103 is connected to both the first liquid outlet 105 and the second liquid outlet 106. The second pipe 108 is also connected to a third pipe 101. 9. The end of the third pipe 109 away from the second pipe 108 is connected to the second cavity 102. The lower end of the side wall of the second cavity 102 is connected to the fourth pipe 110. The end of the fourth pipe 110 away from the second cavity 102 is connected to the first pipe 107. The second pipe 108 is also connected to the fifth pipe 111. The end of the fifth pipe 111 away from the second pipe 108 is connected to the third cavity 103. The connection between the second pipe 108 and the third cavity 103 is corresponding to the first liquid outlet 105. The connection between the fifth pipe 111 and the third cavity 103 is corresponding to the second liquid outlet 106. The connection between the third pipe 109 and the second pipe 108 is closer to the first cavity 101 than the connection between the fifth pipe 111 and the second pipe 108.

[0026] A first solenoid valve 17 is provided on the first pipe 107, and the first solenoid valve 17 is located near the liquid inlet 104; a second solenoid valve 18 is provided on the second pipe 108, and the second solenoid valve 18 is located near the third cavity 103; a third solenoid valve 19 is provided on the third pipe 109, and the third solenoid valve 19 is located near the second pipe 108; a fourth solenoid valve 20 is provided on the fourth pipe 110, and the fourth solenoid valve 20 is located near the first pipe 107; a fifth solenoid valve 7 is provided on the fifth pipe 111, and the fifth solenoid valve 7 is located near the second pipe 108; a sixth solenoid valve 21 is provided in the second liquid outlet 106; and a seventh solenoid valve 27 is provided in the first liquid outlet 105.

[0027] A movable rod 3 is fixedly connected to the side wall of the first cavity 101 opposite to the side wall of the first pipe 107. The movable rod 3 includes a first telescopic rod 31 and a second telescopic rod 32. One end of the second telescopic rod 32 is slidably connected inside the first telescopic rod 31, and the other end of the second telescopic rod 32 extends out of the first telescopic rod 32. A spring 4 is sleeved on the outside of the movable rod 3. One end of the spring 4 is fixedly connected to the side wall of the first telescopic rod 31 connected to the first cavity 101, and the other end of the spring 4 is fixedly connected to the side wall of the second telescopic rod 32 away from the first telescopic rod 31. A valve core 2 is fixedly connected to the end of the second telescopic rod 32 away from the first telescopic rod 31. When the spring 4 is stationary without other external forces, the valve core 2 blocks the opening connecting the first cavity 101 and the first pipe 107. A magnet 6 is fixedly connected to the end of the spring 4 away from the first telescopic rod 31. The magnet 6 is sleeved on the outside of the movable rod 3. A coil 8 is provided inside the valve body 1. The coil 8 is wound around the outside of the first cavity 101, and the magnet 6 is located within the area where the coil 8 is wound.

[0028] Coil 8 connects two conducting circuits, which are set in parallel. The positive and negative terminals of the power supply of the first conducting circuit are set in opposite directions to those of the second conducting circuit. A first switch S1 is connected in series in the first conducting circuit, and a second switch S2 is connected in series in the second conducting circuit. The first switch S1 and the second switch S2 will not be closed at the same time, but they can be in the open state at the same time. Through the magnetic setting of magnet 6, when the first switch S1 is closed, after coil 8 is energized, it drives magnet 6 to move in the direction of compressing spring 4. When the second switch S2 is closed, after coil 8 is energized, it drives magnet 6 to move in the direction of stretching spring 4.

[0029] A first pressure sensor 5 is provided at the bottom of the first telescopic rod 31. After the second telescopic rod 32 retracts and contacts the first pressure sensor 5, the first pressure sensor 5 detects the pressure value of the second telescopic rod 32. A second pressure sensor 9 is embedded in the inner wall of the first pipe 107. The second pressure sensor 9 is located between the connection between the third pipe 109 and the second pipe 108 and the location of the second solenoid valve 18.

[0030] A pressure plate 11 is slidably connected within the third cavity 103. The pressure plate 11 is U-shaped and includes an integrally connected first vertical part, a horizontal part, and a second vertical part. The first vertical part and the second vertical part are perpendicularly connected to the lower wall of the horizontal part, respectively. Screws 12 are threaded through both the first vertical part and the second vertical part. The lower ends of the two screws 12 pass through the valve body 1. The end of one screw 12 extending out of the valve body 1 is fixedly connected to the first gear 13, and the end of the other screw 12 extending out of the valve body 1 is fixedly connected to the second gear 14. The first gear 13 and the second gear 14 are connected by a chain 15. The output end of the motor 16 is fixedly connected below the second gear 14. After the motor 16 starts, it drives the first gear 13 and the second gear 14 to rotate synchronously, thereby causing the two screws 12 to drive the pressure plate 11 to move up and down. When the booster plate 11 is located at the bottom of the third cavity 103, the second pipe 108 is connected to the inside of the third cavity 103; when the booster plate 11 is located at the top of the third cavity 103, the second pipe 108 is not connected to the inside of the third cavity 103, and the fifth pipe 111 is connected to the inside of the third cavity 103.

[0031] The controller is electrically connected to the first switch S1, the second switch S2, the first solenoid valve 17, the second solenoid valve 18, the third solenoid valve 19, the fourth solenoid valve 20, the fifth solenoid valve 7, the first pressure sensor 5, the second pressure sensor 9, the third pressure sensor 10, and the motor 16.

[0032] The pressure value detected by the first pressure sensor 5 is set as the first pressure value, the pressure value detected by the second pressure sensor 9 is set as the second pressure value, and the pressure value detected by the third pressure sensor 10 is set as the third pressure value. The controller controls the opening degree of the first solenoid valve 17, the third solenoid valve 19, and the fourth solenoid valve 20, as well as the conduction state of the coil 8, according to the first pressure value. The controller controls the opening degree of the second solenoid valve 18, the fifth solenoid valve 7, and the sixth solenoid valve 21, as well as the speed of the motor 16, according to the second and third pressure values.

[0033] The present invention also provides a control method for a bentonite cement slurry conveying device for an anti-seepage wall, comprising the following steps: S1. The controller controls the opening degree of the first solenoid valve 17, the second solenoid valve 18, the third solenoid valve 19, the fourth solenoid valve 20, and the fifth solenoid valve 7, as well as the conduction state of the coil 8, based on the first pressure value. The specific method is as follows: (1) When At this time, the controller controls the opening degree of the first solenoid valve 17, the third solenoid valve 19, and the fourth solenoid valve 20 to 100%, controls the opening degree of the second solenoid valve 18 and the fifth solenoid valve 7 to 0%, and controls the first switch S1 to close.

[0034] (2) When At this time, the controller controls the opening degree of the first solenoid valve 17 to 85%-95%, and controls the opening degree of the third solenoid valve 19 and the fourth solenoid valve 20 to 10%-15%; and controls the second solenoid valve 18 and the fifth solenoid valve 7 to open.

[0035] (3) When At the same time, the controller controls the opening degree of the first solenoid valve 17 to 10%-15%, the opening degree of the third solenoid valve 19 to 55%-65%, and the opening degree of the fourth solenoid valve 20 to 10%-15%; and controls the second solenoid valve 18 and the fifth solenoid valve 7 to open.

[0036] (4) When At this time, the controller controls the opening degree of the third solenoid valve 19 to 100%, controls the opening degree of the fourth solenoid valve 20 and the first solenoid valve 17 to 0%, and controls the second switch S2 to close.

[0037] In the above formula, This indicates the output set pressure of valve body 1. This indicates the first pressure value.

[0038] S2. When the situation is in step (2) or (3) of S1, the controller controls the opening degree of the second solenoid valve 18, the fifth solenoid valve 7, and the sixth solenoid valve 21, as well as the speed of the motor 16, according to the second pressure value and the third pressure value. Specifically: (1) When At that time, the controller controls the opening degree of the second solenoid valve 18 to 100%, controls the opening degree of the fifth solenoid valve 7 to 0%, and then controls the speed of the motor 16 to be... This causes the booster component 11 to move upwards, when At the same time, the second solenoid valve 18 is closed and the seventh solenoid valve 27 is opened. At this time, the sixth solenoid valve 21 is closed, so that the liquid in the third cavity 103 flows out from the first liquid outlet 105. The highest position of the pressurizing component 11 moving upward is lower than the top of the first liquid outlet 105.

[0039] (2) When At that time, the controller controls the opening degree of the second solenoid valve 18 to 0%, controls the opening degree of the fifth solenoid valve 7 to 100%, and then controls the speed of the motor 16 to be... This causes the booster component 11 to move upwards, when At the same time, the fifth solenoid valve 7 is closed and the sixth solenoid valve 21 is opened. At this time, the seventh solenoid valve 27 is closed, so that the liquid in the third cavity 103 flows out from the second liquid outlet 106. The highest position of the pressurizing component 11 moving upward is higher than the top of the first liquid outlet 105 and lower than the top of the second liquid outlet 106.

[0040] (3) When At this time, the opening degree of the second solenoid valve 18, the fifth solenoid valve 7, and the sixth solenoid valve 21 are all controlled to be 0%, and the motor 16 is controlled to not work.

[0041] , The following relationship exists: ; In the above formula, Indicates the first velocity. Indicates the second speed. This indicates the second pressure value. This indicates the third pressure value. Indicates the first parameter. This indicates that the second parameter is less than the first parameter.

[0042] S3. A first power supply is connected in series in the conducting circuit of the first switch S1, and a second power supply is connected in the conducting circuit of the second switch S2. Both the first and second power supplies are AC power supplies. The output voltage of the first power supply is set to the first voltage value, and the output voltage of the second power supply is set to the second voltage value. In step S1 (1), the controller dynamically adjusts the first voltage value according to the first pressure value. In step S1 (4), the controller adjusts the second voltage value according to the first pressure value. Specifically: In step S1, case (1) involves the controller controlling the first voltage value according to the following formula: ; In the above formula, Indicates the first voltage value. This indicates the maximum voltage that the first power supply can output.

[0043] In step S1, case (4) involves controlling the second voltage value in the following two ways: (1) When At that time, the controller controls the second voltage value according to the following formula: ; In the above formula, Indicates the second voltage value. This indicates the maximum voltage value that the second power supply can output.

[0044] (2) When At that time, the controller controls the second voltage value according to the following formula: .

[0045] By dynamically adjusting the first voltage value of the first power supply and the second voltage value of the second power supply, the current flowing into the coil 8 can be adjusted, thereby controlling the strength of the magnetic field generated by the coil 8.

[0046] This invention involves sequentially installing a filter device, a control valve assembly, and a filter mesh on a delivery pipe. The flow rate of cement pumped into the mixing pile is controlled by a delivery pump. The cement is initially filtered by the filter device, then enters the control valve assembly to regulate the cement pressure and ensure the stability of the output cement pressure. Finally, the cement flows into the mixing pile through the filter mesh, ensuring the construction effect.

[0047] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A bentonite cement slurry conveying device for an anti-seepage wall, characterized in that, The system includes a delivery pipe, a delivery pump, a filter device, a filter mesh, and a control valve assembly. The delivery pump is located on the ground and is connected to the delivery pipe. The delivery pipe extends into the mixing pile. The filter mesh is located at the end of the delivery pipe away from the delivery pump. The filter device and the control valve assembly are provided on the delivery pipe. The control valve assembly is connected to the end of the filter device away from the delivery pump. The control valve assembly includes a valve body and a controller. The valve body has a liquid inlet, a first liquid outlet, and a second liquid outlet. The valve body also has a first cavity and a second cavity. The first cavity is connected to the liquid inlet via a first pipe, the first cavity is connected to the first liquid outlet via a second pipe, the second pipe is connected to the second cavity via a third pipe, the second cavity is connected to the first pipe via a fourth pipe, and the second pipe is connected to the second liquid outlet via a fifth pipe. A first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, and a fifth solenoid valve are respectively installed in the first pipe, the second pipe, the third pipe, the fourth pipe, and the fifth pipe. A valve core is installed in the first cavity, and a movable rod is connected between the valve core and the side wall of the first cavity. A spring is sleeved on the outside of the movable rod, and a first pressure sensor is installed inside the movable rod. A coil is installed in the valve body and wound around the outside of the first cavity. A magnet is installed at the position where the valve core connects to the movable rod. The first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the coil, and the first pressure sensor are all electrically connected to the controller.

2. The bentonite cement slurry conveying device for an anti-seepage wall according to claim 1, characterized in that, The coil is connected to two conducting circuits, which are arranged in parallel. One conducting circuit is connected in series with a first power supply and a first switch, and the other conducting circuit is connected in series with a second power supply and a second switch.

3. The bentonite cement slurry conveying device for an anti-seepage wall according to claim 2, characterized in that, The positive and negative terminals of the first power supply are opposite to those of the second power supply; when the first switch is closed, the coil is energized and drives the magnet to move in the direction of compressing the spring; when the second switch is closed, the coil is energized and drives the magnet to move in the direction of stretching the spring.

4. The bentonite cement slurry conveying device for an anti-seepage wall according to claim 1, characterized in that, The end of the second pipe away from the first cavity is connected to the third cavity, and the end of the fifth pipe away from the second pipe is connected to the third cavity. The first liquid outlet and the second liquid outlet are both connected to the third cavity. The second pipe is set corresponding to the first liquid outlet, and the fifth pipe is set corresponding to the second liquid outlet. The second liquid outlet is provided with a sixth solenoid valve, and the first liquid outlet is provided with a seventh solenoid valve. The sixth solenoid valve and the seventh solenoid valve are both electrically connected to the controller.

5. A bentonite cement slurry conveying device for an anti-seepage wall according to claim 4, characterized in that, The third cavity is equipped with a pressure boosting component. The pressure boosting component adjusts the pressure of the liquid flow inside the third cavity by moving within it. The pressure boosting component moves up and down through a connection structure of a motor and a screw.

6. The bentonite cement slurry conveying device for an anti-seepage wall according to claim 5, characterized in that, A second pressure sensor is provided on the inner wall of the second pipe. The second pressure sensor is located between the connection between the second pipe and the third pipe and the location where the second solenoid valve is set. A third pressure sensor is provided at the top of the third cavity.

7. A control method for a bentonite cement slurry conveying device for an anti-seepage wall according to any one of claims 1-6, characterized in that, Includes the following steps: S1. The controller controls the opening degree of the first, second, third, fourth, and fifth solenoid valves and the conduction of their coils based on the first pressure value, specifically as follows: (1) When At this time, the controller controls the opening degree of the first solenoid valve, the third solenoid valve, and the fourth solenoid valve to 100%, controls the opening degree of the second solenoid valve and the fifth solenoid valve to 0%, and controls the first switch S1 to close. (2) When At this time, the controller controls the opening degree of the first solenoid valve to 85%-95%, and controls the opening degree of the third and fourth solenoid valves to 10%-15%; and controls the second and fifth solenoid valves to open. (3) When At this time, the controller controls the opening degree of the first solenoid valve to 10%-15%, the opening degree of the third solenoid valve to 55%-65%, and the opening degree of the fourth solenoid valve to 10%-15%; and controls the second and fifth solenoid valves to open. (4) When At this time, the controller controls the opening degree of the third solenoid valve to 100%, controls the opening degree of the fourth solenoid valve and the first solenoid valve to 0%, and controls the second switch S2 to close. In the above formula, This indicates the output set pressure of the valve body. Indicates the first pressure value; S2. When in the situation of (2) and (3) in step S1, the controller controls the opening of the second solenoid valve, the fifth solenoid valve and the sixth solenoid valve and the speed of the motor according to the second pressure value and the third pressure value. S3. Both the first power supply and the second power supply use AC power. The output voltage of the first power supply is set to the first voltage value, and the output voltage of the second power supply is set to the second voltage value. In step S1 (1), the controller dynamically adjusts the first voltage value according to the first pressure value. In step S1 (4), the controller adjusts the second voltage value according to the first pressure value.

8. The control method for a bentonite cement slurry conveying device for an anti-seepage wall according to claim 7, characterized in that, In step S2, the controller controls the opening degrees of the second, fifth, and sixth solenoid valves, as well as the motor speed, based on the second and third pressure values. Specifically: (1) When At that time, the controller controls the opening degree of the second solenoid valve to 100%, controls the opening degree of the fifth solenoid valve to 0%, and then controls the speed of the motor to... This causes the booster components to move upwards, when At the same time, the second solenoid valve is closed and the seventh solenoid valve is opened, while the sixth solenoid valve is closed, allowing the liquid in the third cavity to flow out from the first liquid outlet; wherein, the highest position of the pressurizing component moving upward is lower than the top of the first liquid outlet; (2) When At that time, the controller controls the opening degree of the second solenoid valve to 0%, controls the opening degree of the fifth solenoid valve to 100%, and then controls the motor speed to... This causes the booster components to move upwards, when At the same time, the fifth solenoid valve is closed and the sixth solenoid valve is opened, and the seventh solenoid valve is closed, so that the liquid in the third cavity flows out from the second liquid outlet; wherein, the highest position of the pressurizing component moving upward is higher than the top of the first liquid outlet and lower than the top of the second liquid outlet; (3) When At this time, the opening degree of the second, fifth, and sixth solenoid valves is all controlled to be 0%, and the motor is controlled to not work. In the above formula, This indicates the second pressure value. This indicates the third pressure value.

9. The control method for a bentonite cement slurry conveying device for an anti-seepage wall according to claim 8, characterized in that, , The following relationship exists: ； In the above formula, Indicates the first velocity. Indicates the second speed. Indicates the first parameter. This indicates that the second parameter is less than the first parameter.

10. The control method for a bentonite cement slurry conveying device for an anti-seepage wall according to claim 7, characterized in that, In step S3, the controller dynamically adjusts the first voltage value and the second voltage value based on the first pressure value. The specific method is as follows: In step S1, case (1) involves the controller controlling the first voltage value according to the following formula: ； In the above formula, Indicates the first voltage value. This indicates the maximum voltage that the first power supply can output; In step S1, case (4) involves controlling the second voltage value in the following two ways: (1) When At that time, the controller controls the second voltage value according to the following formula: ； In the above formula, Indicates the second voltage value. This indicates the maximum voltage value that the second power supply can output; (2) When At that time, the controller controls the second voltage value according to the following formula: 。

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