Sand-fixing slurry spraying device for sand control

Abstract

A sand-fixing slurry spraying device for sand treatment includes a self-propelled mobile system, a spraying and cleaning system, a nozzle lateral movement system, a nozzle longitudinal movement system, and a data acquisition and control system. The spraying and cleaning system can spray different sand-fixing slurries in the form of a fan-shaped water curtain, control and adjust the spraying pressure and flow rate, and can clean the slurry tank, pump, and pipelines with one click after spraying. The nozzle lateral movement system can adjust the nozzle distance at equal intervals to adjust the spray width; the nozzle longitudinal movement system can adjust the height of the nozzle from the ground; and the data acquisition and control system can regulate the spraying pressure, flow rate, nozzle spacing, and nozzle height, and can collect information on the spraying pressure, flow rate, remaining amount of slurry and clean water, nozzle spacing, and nozzle height. The present invention is simple to operate, reliable in operation, and has the characteristics of low spray volume, uniform spraying, and high work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of desertification control, and in particular to a sand-fixing slurry spraying device for controlling sandy land. Background Art

[0002] Among current sand fixation technologies, chemical sand fixation offers advantages over engineering and biological sand fixation, such as faster results. However, this approach lacks efficient and intelligent sand fixation slurry spraying devices. Without a highly efficient chemical sand fixation slurry spraying device, the widespread use of chemical sand fixation in my country's desertified land is extremely difficult. Therefore, developing specialized chemical sand fixation slurry spraying devices is crucial. Summary of the Invention

[0003] The purpose of the present invention is to provide a sand-fixing slurry spraying device for sand management. The device has a simple structure, reliable operation, and is applicable to different sand-fixing slurries. The nozzle spacing, nozzle height, spraying pressure, flow rate and driving speed can be adjusted according to the degree of sandification of the sprayed sand, thereby improving the efficiency of spraying slurry in the sand, saving slurry and reducing costs.

[0004] A sand-fixing slurry spraying device for sand treatment, comprising a spraying and cleaning system, a nozzle lateral movement system, a nozzle longitudinal movement system and a data acquisition and control system;

[0005] The spraying and cleaning system includes a liquid storage tank, a steel wire hose, an electric three-way ball valve, a slurry pump, a normally closed solenoid valve, a water distributor and a wide-angle fan-shaped nozzle. The liquid storage tank is divided into a clean water tank and a slurry tank. The liquid outlet of the slurry tank is connected to the normally closed liquid inlet of the electric three-way ball valve through a steel wire hose. The liquid outlet of the electric three-way ball valve is connected to the liquid inlet of the slurry pump. The liquid outlet of the slurry pump is connected to the normally closed solenoid valve through a steel wire hose. The normally closed solenoid valve is connected to the liquid inlet of the water distributor. The liquid outlet of the water distributor is connected to the wide-angle fan-shaped nozzle through a steel wire hose. A turbine flowmeter and a pressure sensor are provided on the steel wire hose between the liquid outlet of the slurry pump and the liquid inlet of the normally closed solenoid valve. The liquid outlet of the clean water tank is connected to the normally open liquid inlet of the electric three-way ball valve by a steel wire hose.

[0006] The liquid storage tank also includes a small water pump, a water pipe and a 360° tank cleaning nozzle. The small water pump is installed on the top of the inner side of the clean water tank. The water inlet of the small water pump is connected to the water pipe and fixed to the bottom of the clean water tank. The water outlet of the small water pump is connected to the 360° tank cleaning nozzle on the top of the slurry tank through a pipeline passing through the inner partition of the liquid storage tank.

[0007] Liquid level sensors are installed at the bottom of the inner cavity of the slurry tank and the clean water tank;

[0008] The nozzle lateral movement system includes a box, a gear plate, a stepper motor, a driving gear, a driven gear, a chain, a forward and reverse threaded screw, a nut, a bearing and a connecting rod. The gear plate is fixed in the middle of the box, the stepper motor is mounted on the gear plate, the driving gear is fixedly connected to the rotor of the stepper motor, and the two driven gears are respectively fixedly connected to the two forward and reverse threaded screws, the forward and reverse threaded screws pass through the gear plate, and the two ends of the forward and reverse threaded screws are respectively connected to the two sides of the box through bearings for rotation, the chain is sleeved between the driving gear and the driven gear, and nuts are provided on both sides of the forward and reverse threaded screws, and the nuts are respectively connected to the wide-angle fan-shaped nozzle through the connecting rod, and the wide-angle fan-shaped nozzle extends to the outside of the box;

[0009] The nozzle longitudinal movement system includes channel steel, smooth guide rails, sliders, wire ropes, rope tighteners, hose reels, servo motors with brakes, and fixed pulleys. Two channel steels are vertically fixed to the rear of the vehicle body. Two smooth guide rails are respectively embedded in the two channel steels. The sliders are slidably connected to the smooth guide rails and the sliders are connected to the box body by screws. The servo motor with brakes is fixedly connected to the vehicle body, and the rotor end of the servo motor with brakes is fixedly connected to the rope tightener. The fixed pulley is fixed to the top of the channel steel. The head end of the wire rope is connected to the rope tightener, and the end of the wire rope is connected to the box body through the fixed pulley.

[0010] The hose reel is fixed to the rear of the vehicle body, and the steel wire hose connecting the normally closed solenoid valve and the water distributor is coiled in the hose reel. The hose reel moves up and down with the box body to retract and release the steel wire hose.

[0011] The data acquisition and control system includes a touch display screen, a PLC, a frequency converter, a stepper motor driver, an inverter, a nozzle height measuring caliper and a relay. The touch display screen, the frequency converter, the second driver, the inverter, the relay, the turbine flowmeter, the pressure sensor and the liquid level sensor are all electrically connected to the PLC, the frequency converter is electrically connected to the slurry, the stepper motor and the servo motor with a brake are electrically connected to the second driver, and the relay and the electric three-way ball valve are electrically connected to the normally closed solenoid valve.

[0012] Beneficial effects of the present invention:

[0013] 1. The present invention is simple to operate and reliable in operation. For different sandy areas with different physical properties of gravel, topography of desertified belts, degree of desertification, etc., the nozzle height, nozzle spacing, flow rate and pressure can be changed by inputting parameters to achieve the purpose of efficient sand fixation. It has the characteristics of low spray volume, precise spraying and high work efficiency.

[0014] 2. The present invention has a one-button cleaning function. When spraying stops, the residual slurry in the pipeline and pump can be cleaned in time; after the slurry is emptied, the slurry tank can also be cleaned with one button.

[0015] 3. The present invention adopts a steel wire hose, which has pressure resistance and bendability.

[0016] 4. The present invention adopts a gear pump, which is more suitable for pumping sand-fixing slurry with a certain viscosity.

[0017] 5. The present invention adopts an electric three-way ball valve. The clean water in the clean water tank always fills the pump chamber of the slurry pump, and then is blocked by the normally closed solenoid valve and does not flow out, so that the slurry pump can have a certain suction force when it is started next time, saving operation time.

[0018] 6. The present invention adopts stepping motor, gear, chain and screw transmission, which has simple structure, convenient maintenance and precise transmission.

[0019] 7. The present invention adopts a servo motor lifting nozzle lateral movement system with a brake, which can stop it at any position on the smooth guide rail.

[0020] 8. The present invention adopts a wide-angle fan-shaped nozzle to spray a fan-shaped water curtain with medium impact and uniform droplet distribution. The deflection angle and spraying angle can be reliably and accurately controlled by pressure, reducing the generation of foam and making the spraying more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 Schematic diagram of the nozzle lateral movement system of the present invention.

[0023] Figure 3 It is a schematic diagram of the gear plate of the nozzle lateral movement system of the present invention.

[0024] Among them: 1-liquid storage tank; 2-slurry tank; 3-clean water tank; 4-small water pump; 5-360° tank cleaning nozzle; 6-electric three-way ball valve; 7-slurry pump; 8-turbine flowmeter; 9-pressure sensor; 10-normally closed solenoid valve; 11-hose reel; 12-servo motor with brake; 13-rope tightener; 14-fixed pulley; 15-wire rope; 16-wire hose; 17-box; 18-smooth guide rail; 19-slider; 20-liquid level sensor; 21-touch screen; 22-distribution box; 23-gear plate; 24-nut; 25-positive and negative thread screw; 26-wide-angle fan nozzle; 27-bearing; 28-water distributor; 29-stepping motor; 30-chain; 31-driving gear; 32-driven gear. DETAILED DESCRIPTION

[0025] See also Figures 1 to 3 As shown, a sand-fixing slurry spraying device for sand control includes a self-propelled mobile system, a spraying and cleaning system, a nozzle lateral movement system, a nozzle longitudinal movement system and a data acquisition and control system;

[0026] The self-propelled mobile system includes a vehicle body, a first drive, a travel motor, a motor speed regulator and an on-board battery. The first drive, the travel motor and the motor speed regulator are all electrically connected to the on-board battery, and the motor speed regulator and the first drive are electrically connected to the travel motor. The travel motor is connected to the vehicle body and is used to drive the vehicle body to travel. The speed of the vehicle body can be adjusted by the motor speed regulator, and the motor speed regulator can make the motor run at a constant speed.

[0027] The spraying and cleaning system includes a liquid storage tank 1, a steel hose 16, an electric three-way ball valve 6, a slurry pump 7, a normally closed solenoid valve 10, a water distributor 28 and a wide-angle fan-shaped nozzle 26. The liquid storage tank 1 is divided into a clean water tank 3 and a slurry tank 2. The liquid outlet of the slurry tank 2 is connected to the normally closed liquid inlet of the electric three-way ball valve 6 through a steel hose 16. The liquid outlet of the electric three-way ball valve 6 is connected to the liquid inlet of the slurry pump 7 through a threaded connection. The liquid outlet of the slurry pump 7 is connected to the normally closed solenoid valve 10 through a steel hose 16. The normally closed solenoid valve 10 is connected to the liquid inlet of the water distributor 28. The liquid outlet of the water distributor 28 is connected to the wide-angle fan-shaped nozzle 26 through a steel hose 16. Threaded connection; a turbine flowmeter 8 and a pressure sensor 9 are provided on the steel wire hose 16 between the liquid outlet of the slurry pump 7 and the liquid inlet of the normally closed solenoid valve 10. The sand-fixing slurry flows through the steel wire hose 16 through the electric three-way ball valve 6, the slurry pump 7, the turbine flowmeter 8, the pressure sensor 9, the normally closed solenoid valve 10 and the water distributor 28, and is finally sprayed out in the form of a fan-shaped water curtain by the wide-angle fan-shaped nozzle 26. The liquid outlet of the clean water tank 3 is connected to the normally open liquid inlet of the electric three-way ball valve 6 by the steel wire hose 16; when flushing the pipeline, clean water is pumped out by the slurry pump 7 through the steel wire hose 6 to flush the pipeline;

[0028] The liquid storage tank 1 also includes a small water pump 4, a water pipe and a 360° tank cleaning nozzle 5. The small water pump 4 is installed on the top of the inner side of the clean water tank 3. The water inlet of the small water pump 4 is connected to the water pipe and fixed to the bottom of the clean water tank 3. The water outlet of the small water pump 4 is connected to the 360° tank cleaning nozzle 5 on the top of the slurry tank 2 through a pipeline passing through the inner partition of the liquid storage tank 1. When the slurry tank 2 is cleaned after the slurry is emptied, the small water pump 4 draws clean water and sprays it through the 360° tank cleaning nozzle 5 on the top of the slurry tank 2 to clean the inside of the slurry tank 2;

[0029] The bottom of the inner cavity of the slurry tank 2 and the clean water tank 3 are both installed with liquid level sensors 20;

[0030] The nozzle lateral movement system includes a box 17, a gear plate 23, a stepper motor 29, a driving gear 31, a driven gear 32, a chain 30, a forward and reverse threaded screw 25, a nut 24, a bearing 27 and a connecting rod. The gear plate 23 is fixed in the middle of the box 17, the stepper motor 29 is mounted on the gear plate 23, the rotor of the stepper motor 29 is fixed with a driving gear 31, and the two driven gears 32 are respectively fixed on the two forward and reverse threaded screws 25. The forward and reverse threaded screws 25 pass through the gear plate 23 and the two ends of the forward and reverse threaded screws 25 are respectively passed through the bearings 27. It is rotatably connected to both sides of the box 17, and the chain 30 is set between the driving gear 31 and the driven gear 32. Nuts 24 are provided on both sides of the forward and reverse threaded screws 25. The nuts 24 are respectively connected to the wide-angle fan-shaped nozzle 26 through connecting rods. The wide-angle fan-shaped nozzle 26 extends to the outside of the box 17. The stepping motor 29 drives the two driven gears 32 with a transmission ratio of 1:2 to rotate through the chain 30, thereby driving the two forward and reverse threaded screws 25 to rotate, causing the nut 24 to move laterally along the forward and reverse threaded screws 25, and then driving the wide-angle fan-shaped nozzle 26 to move laterally through the connecting rod, thereby realizing the equal spacing movement of the wide-angle fan-shaped nozzle 26;

[0031] The nozzle longitudinal movement system includes channel steel, smooth guide rail 18, slider 19, wire rope 15, rope tightener 13, hose reel 11, servo motor 12 with brake and fixed pulley 14. Two channel steels are vertically fixed to the rear of the vehicle body, and the bottom of the channel steel is 30 cm from the ground. Two smooth guide rails 18 are respectively embedded in the two channel steels. The slider 19 is slidably connected to the smooth guide rail 18 and the slider 19 is connected to the box 17 by screws. The servo motor 12 with brake is fixedly connected to the vehicle body, and the rotor end of the servo motor 12 with brake is fixedly connected to the rope tightener 13. The fixed pulley 14 is fixed to the top of the channel steel. The head end of the wire rope 15 is connected to the rope tightener 13, and the end of the wire rope 15 is connected to the box 17 through the fixed pulley 14; the servo motor 12 drives the rope tightener 13 to rotate, and the wire rope 15 drives the box 17 to move vertically along the smooth guide rail 18 through the fixed pulley 14;

[0032] The hose reel 11 is fixed to the rear of the vehicle body, and the steel hose 16 connecting the normally closed solenoid valve 10 and the water distributor 28 is wound in the hose reel 11. The hose reel 11 moves up and down with the nozzle transverse moving device 17 to retract and release the steel hose 16;

[0033] The data acquisition and control system includes a touch screen display 21, a programmable logic controller (PLC), a frequency converter, a stepper motor driver, an inverter, a nozzle height measuring caliper, and a relay. The touch screen display 21, the frequency converter, the second driver, the inverter, the relay, the turbine flowmeter 8, the pressure sensor 9, and the liquid level sensor 20 are all electrically connected to the PLC. The frequency converter is electrically connected to the slurry pump 7. The stepper motor 29 and the servo motor with a brake 12 are electrically connected to the second driver. The relay and the electric three-way ball valve 6 are electrically connected to the normally closed solenoid valve 10. The PLC can collect sensor data and control elements, and display the data and operations on the touch screen display 21.

[0034] Furthermore, the data acquisition and control system further includes a distribution box 22, in which the PLC, inverter, first driver, second driver, relay, switching power supply and circuit breaker are assembled, and the distribution box 22 is installed in the cab.

[0035] Furthermore, the data acquisition and control system uses PLC programming, including automatic mode and manual mode.

[0036] Furthermore, the automatic mode includes one-touch start and one-touch stop. In automatic mode, the stepper motor 29 operates to adjust the spacing of the wide-angle fan nozzles 26 to a set value. The servo motor 12 with a brake rotates to retract and release the wire rope 15, adjusting the wide-angle fan nozzles 26 to a set height. The electric three-way ball valve 6 opens the slurry port, and the slurry pump 7 operates at the set speed to pump the slurry. A one-touch stop button can immediately stop all systems.

[0037] Furthermore, the manual mode includes manual control of the slurry pump 7 speed, the nozzle lateral movement speed, the nozzle longitudinal movement speed, the electric three-way ball valve 6 and the normally closed solenoid valve 10. The manual mode can start and stop each system individually through the touch display screen 21.

[0038] Furthermore, the electric three-way ball valve 6 is used to switch the liquid inlet channel, and the normally closed solenoid valve 10 prevents the liquid from flowing out when not in use.

[0039] The working principle and use process of the present invention:

[0040] The self-propelled moving system is used to control the moving speed of the vehicle;

[0041] The spraying and cleaning system can spray different sand-fixing slurries in the form of a fan-shaped water curtain, control and adjust the spraying pressure and flow rate, and clean the slurry tank, pump and pipelines with one click after spraying;

[0042] The nozzle lateral movement system can adjust the nozzle distance at equal intervals and adjust the spraying width;

[0043] The nozzle longitudinal movement system can adjust the height of the nozzle from the ground;

[0044] The data acquisition and control system can regulate the spraying pressure, flow, nozzle spacing, and nozzle height, and can collect the spraying pressure, flow, slurry and clean water remaining amount, nozzle spacing, and nozzle height.

Claims

1. A sand-fixing slurry spraying device for sand control, characterized by: It includes spraying and cleaning system, nozzle lateral movement system, nozzle longitudinal movement system and data acquisition and control system; The spraying and cleaning system comprises a liquid storage tank (1), a steel hose (16), an electric three-way ball valve (6), a slurry pump (7), a normally closed electromagnetic valve (10), a water distributor (28) and a wide-angle fan-shaped nozzle (26). The liquid storage tank (1) is divided into two parts: a clean water tank (3) and a slurry tank (2). The liquid outlet of the slurry tank (2) is connected to the normally closed liquid inlet of the electric three-way ball valve (6) through the steel hose (16). The liquid outlet of the electric three-way ball valve (6) is connected to the liquid inlet of the slurry pump (7). The liquid outlet of the slurry pump (7) is connected to the normally closed liquid inlet of the slurry pump (7). The normally closed electromagnetic valve (10) is connected to the normally closed electromagnetic valve (10) through the steel wire hose (16), the normally closed electromagnetic valve (10) is connected to the liquid inlet of the water distributor (28), and the liquid outlet of the water distributor (28) is connected to the wide-angle fan-shaped nozzle (26) through the steel wire hose (16); a turbine flow meter (8) and a pressure sensor (9) are provided on the steel wire hose (16) between the liquid outlet of the slurry pump (7) and the liquid inlet of the normally closed electromagnetic valve (10), and the liquid outlet of the clean water tank (3) is connected to the normally open liquid inlet of the electric three-way ball valve (6) through the steel wire hose (16); The liquid storage tank (1) further comprises a small water pump (4), a water pipe and a 360° tank cleaning nozzle (5), wherein the small water pump (4) is mounted on the inner top of the clean water tank (3), the water inlet of the small water pump (4) is connected to the water pipe and fixed to the bottom of the clean water tank (3), and the water outlet of the small water pump (4) is connected to the 360° tank cleaning nozzle (5) on the top of the slurry tank (2) through a pipeline passing through the inner partition of the liquid storage tank (1); Liquid level sensors (20) are installed at the bottom of the inner cavities of the slurry tank (2) and the clean water tank (3); The nozzle lateral movement system includes a box (17), a gear plate (23), a stepper motor (29), a driving gear (31), a driven gear (32), a chain (30), a forward and reverse threaded screw (25), a nut (24), a bearing (27) and a connecting rod. The gear plate (23) is fixed in the middle of the box (17), the stepper motor (29) is mounted on the gear plate (23), the driving gear (31) is fixed to the rotor of the stepper motor (29), and the two driven gears (32) are respectively fixed to the driving gear (31). On the two forward and reverse threaded screws (25), the forward and reverse threaded screws (25) pass through the gear plate (23) and the two ends of the forward and reverse threaded screws (25) are respectively connected to the two sides of the box (17) through bearings (27), the chain (30) is set between the driving gear (31) and the driven gear (32), and nuts (24) are provided on both sides of the forward and reverse threaded screws (25). The nuts (24) are respectively connected to the wide-angle fan-shaped nozzle (26) through a connecting rod, and the wide-angle fan-shaped nozzle (26) extends to the outside of the box (17); The nozzle longitudinal movement system includes a channel steel, a smooth guide rail (18), a slider (19), a wire rope (15), a rope tightener (13), a hose reel (11), a servo motor with a brake (12) and a fixed pulley (14), wherein two channel steels are vertically fixed to the rear of the vehicle body, two smooth guide rails (18) are respectively embedded in the two channel steels, the slider (19) is slidably connected to the smooth guide rail (18) and the slider (19) is connected to the box (17) by screws, the servo motor with a brake (12) is fixedly connected to the vehicle body, and the rotor end of the servo motor with a brake (12) is fixedly connected to the rope tightener (13), the fixed pulley (14) is fixed to the top of the channel steel, the head end of the wire rope (15) is connected to the rope tightener (13), and the end of the wire rope (15) is connected to the box (17) through the fixed pulley (14); The hose reel (11) is fixed to the rear of the vehicle body, and the steel wire hose (16) connecting the normally closed solenoid valve (10) and the water distributor (28) is wound in the hose reel (11). The hose reel (11) moves up and down with the box (17) to retract and release the steel wire hose (16); The data acquisition and control system includes a touch screen (21), a PLC, a frequency converter, a stepper motor driver, an inverter, a nozzle height measuring caliper and a relay. The touch screen (21), the frequency converter, the second driver, the inverter, the relay, the turbine flowmeter (8), the pressure sensor (9) and the liquid level sensor (20) are all electrically connected to the PLC. The frequency converter is electrically connected to the slurry pump (7). The stepper motor (29) and the servo motor with a brake (12) are electrically connected to the second driver. The relay and the electric three-way ball valve (6) are electrically connected to the normally closed solenoid valve (10).

2. The sand-fixing slurry spraying device for sand control according to claim 1, characterized in that: It also includes a self-propelled mobile system, which includes a vehicle body, a first drive, a travel motor, a motor speed regulator and an on-board battery. The first drive, the travel motor and the motor speed regulator are all electrically connected to the on-board battery, and the motor speed regulator and the first drive are electrically connected to the travel motor. The travel motor is connected to the vehicle body and is used to drive the vehicle body to move. The speed of the vehicle body can be adjusted by the motor speed regulator, and the motor speed regulator can make the motor run at a constant speed.

3. The sand-fixing slurry spraying device for sand control according to claim 2, characterized in that: The data acquisition and control system further comprises a distribution box (22), wherein the PLC, the frequency converter, the first driver, the second driver, the relay, the switching power supply and the circuit breaker are all assembled in the distribution box (22), and the distribution box (22) is installed in the cab.

4. The sand-fixing slurry spraying device for sand control according to claim 1, characterized in that: The data acquisition and control system uses PLC programming, including automatic mode and manual mode.

5. The sand-fixing slurry spraying device for sand control according to claim 4, characterized in that: The automatic mode includes one-button start and one-button stop. In the automatic mode, the stepper motor (29) operates to adjust the spacing of the wide-angle fan-shaped nozzle (26) to a set value, the servo motor (12) with a brake rotates the retractable wire rope (15) to adjust the wide-angle fan-shaped nozzle (26) to a set height, the slurry port of the electric three-way ball valve (6) is opened, and the slurry pump (7) operates at a set speed and pumps the slurry.

6. The sand-fixing slurry spraying device for sand control according to claim 4, characterized in that: The manual mode includes manually controlling the rotation speed of the slurry pump (7), the speed of the nozzle's lateral movement, the speed of the nozzle's longitudinal movement, the switch of the electric three-way ball valve (6) and the normally closed electromagnetic valve (10). The manual mode can control the start and stop of each system individually through the touch screen (21).

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