Intelligent feeding system for hazardous waste liquid pretreatment

Abstract

An intelligent feeding system for hazardous waste liquid pretreatment, comprising a device base, a waste feeding device, a stirring device, a lifting device and a controller, the waste feeding device comprises a tray, a plurality of material placing barrels, a rotating base, a first mechanical arm, a second mechanical arm, a third mechanical arm, a fixed base, an electric clamping jaw, a first rotating motor, a second rotating motor, a third rotating motor and a fourth rotating motor, the stirring device comprises a stirring barrel, a rotating shaft, a plurality of stirring blades, a fifth rotating motor, a solid-liquid mixing conveying pump and a feeding pipe, the bottom of the stirring barrel is provided with a feeding port, the lifting device comprises a sliding rail, a conveying chain, a first sliding base, a second sliding base, a fixed frame, a feeding barrel, a sixth rotating motor and a driving motor, and the rotating base is located between the tray and the stirring barrel.

Description

Technical Field

[0001] This invention relates to the field of waste treatment equipment technology, and in particular to an intelligent feeding system for the pretreatment of hazardous waste liquid. Background Technology

[0002] With the continuous development of people's living standards, a large amount of domestic waste is generated every day. In the waste disposal process, it is inevitable to treat various hazardous liquid wastes. Current technology treats hazardous liquid wastes as follows: First, the hazardous liquid to be treated is poured into a waste tank, and sawdust is added. The amount of sawdust added each time is approximately 200 kg. The sawdust can mix and absorb the hazardous liquid. Then, workers shovel the mixed solid-liquid waste into the tipping bucket of an elevator, which then feeds the waste into the incinerator's inlet. Workers handling hazardous liquid waste are exposed to it for extended periods, which is detrimental to their health. Furthermore… It also requires staff to work 24 hours a day, which is labor-intensive and in a harsh working environment. Furthermore, because manual mixing of waste liquid and sawdust can easily lead to uneven mixing, leakage can easily occur when shoveling the waste into the tipping bucket of the elevator. In addition, when manually shoveling the solid-liquid mixture into the tipping bucket, it is impossible to guarantee that the weight of each feed meets the requirements, as it is entirely based on the staff's personal experience. If too much is added, the incinerator will not be able to fully burn the solid-liquid mixture, affecting the subsequent treatment effect of hazardous waste liquid. If too little is added, it will easily affect the treatment efficiency of hazardous waste liquid. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an intelligent feeding system for the pretreatment of hazardous waste liquid that is highly automated, improves the treatment effect of hazardous waste liquid, and ensures thorough mixing of waste liquid and sawdust.

[0004] The technical solution of this invention: An intelligent feeding system for the pretreatment of hazardous waste liquid, comprising an equipment base, a waste feeding device connected to the equipment base, a stirring device connected to the equipment base, a lifting device connected to the equipment base, and a controller. The waste feeding device includes a tray connected to the equipment base, several material storage bins stacked on the tray, a rotating base connected to the equipment base, a first robotic arm fixedly connected to the rotating base, a second robotic arm hinged to the first robotic arm, a third robotic arm hinged to the second robotic arm, a fixed base movably connected to the third robotic arm, an electric clamping claw connected to the fixed base, a first rotary motor for driving the rotating base to rotate, a second rotary motor for driving the second robotic arm to rotate, a third rotary motor for driving the third robotic arm to rotate, and a fourth rotary motor for driving the fixed base to rotate. The stirring device includes a stirring tank connected to the equipment base, a rotating shaft movably connected to the stirring tank, and a controller connected to the rotating shaft. The device comprises several stirring blades, a fifth rotary motor for driving the rotating shaft to rotate, a solid-liquid mixing and conveying pump connected to the bottom of the mixing tank, and a feeding pipe connected to the mixing tank. The bottom of the mixing tank is provided with a feeding port, the feeding pipe is connected to the feeding port, and the solid-liquid mixing and conveying pump is connected to the connection between the feeding pipe and the feeding port. The lifting device includes a sliding rail connected to the equipment base, a transmission chain connected to the sliding rail, a first sliding base connected to the transmission chain, a second sliding base hinged to the first sliding base, a fixed frame fixedly connected to the second sliding base, a feeding tank fixedly connected to the fixed frame, a sixth rotary motor for driving the second sliding base to rotate, and a drive motor for driving the transmission chain to move. The rotating base is located between the tray and the mixing tank. The controller is electrically connected to the first rotary motor, the second rotary motor, the third rotary motor, the fourth rotary motor, the fifth rotary motor, the sixth rotary motor, the drive motor, the solid-liquid mixing and conveying pump, and the electric clamping claws.

[0005] Using the above technical solution, firstly, the hazardous waste liquid to be treated is loaded into a storage bin, and the storage bin is stacked on a pallet. Then, the controller controls the second and third rotary motors to drive the second and third robotic arms to rotate by a certain angle, so that the position of the electric clamping claw corresponds to the position of the storage bin. Then, the controller controls the electric clamping claw to clamp the storage bin. Next, the controller controls the first rotary motor to drive the rotating base to rotate by a certain angle, so that the electric clamping claw is directly above the mixing tank. Then, the controller controls the fourth rotary motor to drive the fixed base to rotate 180 degrees, so that the hazardous waste liquid in the storage bin is poured into the mixing tank. Then, the controller controls the fourth rotary motor to drive the fixed base to reset. Then, the first, second, and third rotary motors drive the rotating base, the second robotic arm, and the third robotic arm to rotate, so that the position of the electric clamping claw returns to its original position. Finally, the empty storage bin is placed back on the pallet. In the same manner, the next material bucket is clamped until the amount of material bucket clamped reaches the threshold. Then, the staff pours the sawdust into the mixing bucket. The controller then controls the fifth rotary motor to drive the rotating shaft to rotate, causing the mixing blades to move accordingly. This thoroughly mixes the hazardous waste liquid and sawdust to form a solid-liquid mixture. After mixing, the controller controls the solid-liquid mixing conveying pump to start, allowing the solid-liquid mixture to be conveyed to the feeding bucket through the feeding pipe. After conveying, the controller controls the drive motor to drive the conveyor chain to move, causing the feeding bucket to be raised with the first sliding base to the corresponding position at the incinerator inlet. Then, the controller controls the sixth rotary motor to drive the second sliding base to rotate at a certain angle, allowing the solid-liquid mixture in the feeding bucket to be poured into the incinerator for incineration. Compared with the traditional feeding method in the hazardous waste liquid pretreatment process, this method greatly reduces labor costs, increases the degree of automation, and avoids the impact on the health of staff working in harsh environments for a long time.

[0006] A further feature of the present invention includes a sawdust feeding device, which comprises a sawdust feed hopper, a first discharge pipe connected to the sawdust feed hopper, a slip ring element movably connected to the first discharge pipe, a second discharge pipe movably connected to the slip ring element, a seventh rotary motor for driving the second discharge pipe to rotate, a third discharge pipe connected to the second discharge pipe, and an electric shut-off valve connected to the connection between the sawdust feed hopper and the first discharge pipe. The third discharge pipe is L-shaped, and the second discharge pipe is coaxially arranged with the mixing tank. The discharge port on the third discharge pipe is located within the area of ​​the mixing tank. The sawdust feed hopper is located directly above the mixing tank. The controller is electrically connected to the electric shut-off valve and the seventh rotary motor respectively. Using the above technical solution, after the hazardous waste liquid is poured into the mixing tank, since the sawdust feed hopper is located directly above the mixing tank, workers can pour the sawdust into the feed hopper from a high platform. Then, the controller opens the electric shut-off valve, and simultaneously, the controller controls the seventh rotary motor to rotate the second discharge pipe. The sawdust enters the first, second, and third discharge pipes sequentially through the sawdust feed hopper. Because a slip ring element is installed between the first and second discharge pipes, the rotation of the second discharge pipe will not affect the normal discharge of the first discharge pipe. When the sawdust is discharged from the third discharge pipe, since the discharge port of the third discharge pipe is within the range of the mixing tank, and the second discharge pipe is coaxially set with the mixing tank, it can be ensured that the sawdust is evenly sprinkled in the mixing tank, thereby improving the mixing efficiency of the mixing device and ensuring that the sawdust and hazardous waste liquid can be better mixed together, thus improving the subsequent incineration effect of the solid-liquid mixture of hazardous waste liquid.

[0007] A further feature of the present invention is that the stirring device further includes a connecting frame slidably connected to the equipment base, a third sliding base slidably connected to the connecting frame, a plurality of pressing blocks fixedly connected to the third sliding base, a first hydraulic cylinder for driving the third sliding base to move in the vertical direction, and a second hydraulic cylinder for driving the connecting frame to move in the horizontal direction. The shape and size of the pressing blocks are adapted to the shape and size of the space enclosed by two adjacent stirring blades and the inner wall of the stirring tank. When the stirring blades and the connecting frame are both in the initial position, the pressing blocks correspond to the gap positions enclosed by the two adjacent stirring blades and the inner wall of the stirring tank. The controller is electrically connected to the first hydraulic cylinder and the second hydraulic cylinder respectively.

[0008] Using the above technical solution, after the controller controls the fifth rotary motor to drive the rotating shaft to rotate for a certain period of time, the fifth rotary motor stops working. The controller then controls the second hydraulic cylinder to drive the connecting frame to move a certain distance in the horizontal direction so that the pressure block is positioned directly above the mixing tank. Then, the controller controls the first hydraulic cylinder to drive the third sliding base to move vertically downward, so that the pressure block compresses the solid-liquid mixture, allowing the sawdust to further fully absorb the hazardous waste liquid, preventing the sawdust in the upper layer from not fully absorbing the hazardous waste liquid. Then, the controller controls the first and second hydraulic cylinders to drive the third sliding base and the connecting frame to reset, and then the stirring work continues. After repeating this cycle multiple times, the stirring efficiency can be greatly improved, thereby improving the final incineration effect of the hazardous waste liquid solid-liquid mixture.

[0009] A further feature of the present invention is that the feeding pipe includes a first feeding pipe and a second feeding pipe. The first feeding pipe is connected to the bottom of the mixing tank, and the second feeding pipe is connected to the first feeding pipe. The first feeding pipe is provided with a spiral feeding rod movably connected to the first feeding pipe and an eighth rotary motor for driving the spiral feeding rod to rotate. The spiral feeding rod is coaxially arranged with the first feeding pipe, and the controller is electrically connected to the eighth rotary motor.

[0010] Using the above technical solution, when the hazardous waste liquid solid-liquid mixture enters the first feeding pipe through the solid-liquid mixing conveying pump, the controller controls the eighth rotary motor to drive the screw feeder to rotate. Since the second feeding pipe is connected to the first feeding pipe, the material in the first feeding pipe will be driven by the screw feeder to flow into the second feeding pipe, and finally enter the feeding bucket through the second feeding pipe. This can prevent the hazardous waste liquid solid-liquid mixture from clogging the first feeding pipe, thereby preventing equipment failure.

[0011] A further feature of the present invention includes a weighing device comprising a weighbridge connected to the equipment base and a data processor electrically connected to the weighbridge. When the feeding bucket is in its initial position, the feeding bucket is placed on the weighbridge. The data processor and the weighbridge are electrically connected to the controller.

[0012] Using the above technical solution, the weighing device includes a weighbridge connected to the equipment base and a data processor electrically connected to the weighbridge. When the feeding hopper is in its initial state, it is in contact with the weighbridge. At this time, there is no hazardous waste solid-liquid mixture in the feeding hopper. The operator controls the weighbridge to perform a tare operation through the controller, and then feeds the mixture into the feeding hopper through the feeding pipe. When the weight of the hazardous waste solid-liquid mixture reaches the threshold, the data processor, being electrically connected to the weighbridge, can receive the data from the weighbridge in real time. The data processor compares the data from the weighbridge with the threshold preset by the operator. When the weighing data from the weighbridge exceeds the threshold, the data processor sends an electrical signal to the controller. The controller then controls the solid-liquid mixture conveying pump to stop working, and the feeding pipe stops feeding the mixture into the feeding hopper. The controller then uses a lifting device to transport the material in the feeding hopper to the inlet of the incinerator. This ensures that the hazardous waste solid-liquid mixture incinerated each time meets the requirements, and the incinerator can fully burn the hazardous waste solid-liquid mixture. At the same time, it can improve the treatment efficiency of hazardous waste liquid.

[0013] A further feature of the present invention is that a vibration motor is provided on the second feeding pipe, and the vibration motor is electrically connected to the controller.

[0014] By adopting the above technical solution, since the second feeding pipe is equipped with a vibration motor, the vibration motor will provide vibration force to the second feeding pipe, thereby preventing the hazardous waste solid-liquid mixture from adhering to the inner wall of the second feeding pipe. At the same time, the vibration force in the second feeding pipe will also be transmitted to the first feeding pipe, which can further prevent the hazardous waste solid-liquid mixture from clogging the first feeding pipe, thereby ensuring that the hazardous waste solid-liquid mixture can be discharged intact and improving the incineration effect after the hazardous waste solid-liquid mixture enters the incinerator. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the structure of an intelligent feeding system for the pretreatment of hazardous waste liquid according to a specific embodiment of the present invention.

[0016] Appendix Figure 2 This is a schematic diagram of the waste feeding device in an intelligent feeding system for hazardous waste liquid pretreatment according to a specific embodiment of the present invention.

[0017] Appendix Figure 3 This is a schematic diagram of the sawdust feeding device in an intelligent feeding system for hazardous waste liquid pretreatment according to a specific embodiment of the present invention.

[0018] Appendix Figure 4 This is a schematic diagram of the lifting device in an intelligent feeding system for hazardous waste liquid pretreatment according to a specific embodiment of the present invention.

[0019] Appendix Figure 5 This is a schematic diagram of the stirring device in an intelligent feeding system for hazardous waste liquid pretreatment according to a specific embodiment of the present invention.

[0020] Appendix Figure 6 This is a cross-sectional view of a feeding pipe in an intelligent feeding system for hazardous waste liquid pretreatment according to a specific embodiment of the present invention.

[0021] 1-Equipment base, 2-Waste feeding device, 3-Agitating device, 4-Lifting device, 5-Controller, 6-Pallet, 7-Packing hopper, 8-Rotating base, 9-First robotic arm, 10-Second robotic arm, 11-Third robotic arm, 12-Fixed base, 13-Electric clamping jaw, 14-First rotary motor, 15-Second rotary motor, 16-Third rotary motor, 17-Fourth rotary motor, 18-Agitating tank, 19-Rotating shaft, 20-Agitating blade, 21-Fifth rotary motor, 22-Solid-liquid mixing and conveying pump, 23-Feeding pipe, 24-Feeding port, 25-Sliding track, 26-Transmission chain, 27-First sliding base, 28-Second 29-Sliding base, 30-Fixed frame, 31-Feeding bucket, 32-Sixth rotary motor, 33-Drive motor, 34-Sawdust feeding device, 35-Sawdust feed hopper, 36-First discharge pipe, 37-Slip ring element, 38-Second discharge pipe, 39-Seventh rotary motor, 40-Third discharge pipe, 41-Electric shut-off valve, 42-Connecting frame, 43-Third sliding base, 44-Pressure block, 45-Second hydraulic cylinder, 46-First feeding pipe, 47-Second feeding pipe, 48-Screw feeder, 49-Eighth rotary motor, 50-Weighing device, 51-Weighbridge, 52-Data processor, 53-Vibration motor. Detailed Implementation

[0022] like Figure 1-6As shown, an intelligent feeding system for the pretreatment of hazardous waste liquid includes a base 1, a waste feeding device 2 connected to the base 1, a stirring device 3 connected to the base 1, a lifting device 4 connected to the base 1, and a controller 5. The waste feeding device 2 includes a tray 6 connected to the base 1, several material bins 7 stacked on the tray 6, a rotating base 8 connected to the base 1, a first robotic arm 9 fixedly connected to the rotating base 8, a second robotic arm 10 hinged to the first robotic arm 9, and a third robotic arm 11 hinged to the second robotic arm 10. The stirring device 3 includes a fixed base 12 movably connected to the third robotic arm 11, an electric gripper 13 connected to the fixed base 12, a first rotary motor 14 for driving the rotation of the rotating base 8, a second rotary motor 15 for driving the rotation of the second robotic arm 10, a third rotary motor 16 for driving the rotation of the third robotic arm 11, and a fourth rotary motor 17 for driving the rotation of the fixed base 12. The stirring device 3 includes a stirring tank 18 connected to the equipment base 1, a rotating shaft 19 movably connected to the stirring tank 18, several stirring blades 20 connected to the rotating shaft 19, and a drive mechanism for rotating the base 8. The equipment includes a fifth rotary motor 21 for rotating shaft 19, a solid-liquid mixing and conveying pump 22 connected to the bottom of the mixing tank 18, and a feeding pipe 23 connected to the mixing tank 18. The bottom of the mixing tank 18 has a feeding port 24, and the feeding pipe 23 is connected to the feeding port 24. The solid-liquid mixing and conveying pump 22 is connected to the connection between the feeding pipe 23 and the feeding port 24. The lifting device 4 includes a sliding rail 25 connected to the equipment base 1, a transmission chain 26 connected to the sliding rail 25, a first sliding base 27 connected to the transmission chain 26, and a second sliding base 2 hinged to the first sliding base 27. 8. A fixed frame 29 fixedly connected to the second sliding base 28, a feeding bucket 30 fixedly connected to the fixed frame 29, a sixth rotary motor 31 for driving the second sliding base 28 to rotate, and a drive motor 32 for driving the transmission chain 26 to move. The rotating base 8 is located between the tray 6 and the mixing bucket 18. The controller 5 is electrically connected to the first rotary motor 14, the second rotary motor 15, the third rotary motor 16, the fourth rotary motor 17, the fifth rotary motor 21, the sixth rotary motor 31, the drive motor 32, the solid-liquid mixing and conveying pump 22, and the electric clamping claw 13.

[0023] First, the hazardous waste liquid to be treated is loaded into the storage bin 7, and the storage bin 7 is stacked on the pallet 6. Then, the controller 5 controls the second rotary motor 15 and the third rotary motor 16 to drive the second robotic arm 10 and the third robotic arm 11 to rotate by a certain angle, so that the position of the electric clamping claw 13 corresponds to the position of the storage bin 7. Then, the controller 5 controls the electric clamping claw 13 to clamp the storage bin 7. Then, the controller 5 controls the first rotary motor 14 to drive the rotating base 8 to rotate by a certain angle, so that the electric clamping claw 13... Located directly above the mixing tank 18, the controller 5 controls the fourth rotary motor 17 to rotate the fixed base 12 180 degrees, causing the hazardous waste liquid in the material container 7 to pour into the mixing tank 18. Then, the controller 5 controls the fourth rotary motor 17 to reset the fixed base 12. Next, the first rotary motor 14, the second rotary motor 15, and the third rotary motor 16 respectively drive the rotating base 8, the second robotic arm 10, and the third robotic arm 11 to rotate, causing the electric clamping claw 13 to return to its original position. Finally, the empty material container 7 is placed back. The tray 6 is placed in its original position, and then the next material container 7 is picked up in the same way until the amount of material container 7 picked up reaches the threshold. Then, the staff pours the sawdust into the mixing tank 18. The controller 5 controls the fifth rotary motor 21 to drive the rotating shaft 19 to rotate, so that the stirring blade 20 moves accordingly, and the hazardous waste liquid and sawdust are thoroughly mixed to form a solid-liquid mixture. After the mixing is completed, the controller 5 controls the solid-liquid mixing conveying pump 22 to start, so that the solid-liquid mixture is conveyed to the feeding tank 30 through the feeding pipe 23. After the conveying is completed, the controller 5 controls the drive motor 32 to drive the transmission chain 26 to move, so that the feeding tank 30 is raised with the first sliding base 27 to the corresponding position of the incinerator inlet. Then, the controller 5 controls the sixth rotary motor 31 to drive the second sliding base 28 to rotate a certain angle, so that the solid-liquid mixture in the feeding tank 30 is poured into the incinerator for incineration. Compared with the traditional feeding method in the hazardous waste liquid pretreatment process, this greatly reduces labor costs, improves the degree of automation, and avoids the health impact of staff working in harsh environments for a long time.

[0024] It also includes a sawdust feeding device 33, which includes a sawdust feeding bin 34, a first discharge pipe 35 connected to the sawdust feeding bin 34, a slip ring element 36 movably connected to the first discharge pipe 35, a second discharge pipe 37 movably connected to the slip ring element 36, a seventh rotary motor 38 for driving the second discharge pipe 37 to rotate, a third discharge pipe 39 connected to the second discharge pipe 37, and an electric shut-off valve 40 connected to the connection between the sawdust feeding bin 34 and the first discharge pipe 35. The third discharge pipe 39 is L-shaped. The second discharge pipe 37 is coaxially arranged with the mixing tank 18. The discharge port on the third discharge pipe 39 is located within the range of the mixing tank 18. The sawdust feeding bin 34 is located directly above the mixing tank 18. The controller 5 is electrically connected to the electric shut-off valve 40 and the seventh rotary motor 38 respectively. After the hazardous waste liquid is poured into the mixing tank 18, since the sawdust feed hopper 34 is located directly above the mixing tank 18, workers can pour the sawdust into the feed hopper 34 from a high position. Then, the controller 5 controls the electric shut-off valve 40 to open. At the same time, the controller 5 controls the seventh rotary motor 38 to drive the second discharge pipe 37 to rotate. The sawdust enters the first discharge pipe 35, the second discharge pipe 37, and the third discharge pipe 39 sequentially through the sawdust feed hopper 34. Because there is a connection between the first discharge pipe 35 and the second discharge pipe 37... The slip ring element 36 ensures that the rotation of the second discharge pipe 37 will not affect the normal discharge of the first discharge pipe 35. When sawdust is discharged from the third discharge pipe 39, since the discharge port of the third discharge pipe 39 is within the range of the mixing tank 18, and the second discharge pipe 37 is coaxially arranged with the mixing tank 18, it can be ensured that the sawdust can be evenly sprinkled in the mixing tank 18, thereby improving the mixing efficiency of the mixing device 3 and ensuring that the sawdust and hazardous waste liquid can be better mixed together, thereby improving the subsequent incineration effect of the solid-liquid mixture of hazardous waste liquid.

[0025] The stirring device 3 further includes a connecting frame 41 slidably connected to the equipment base 1, a third sliding base 42 slidably connected to the connecting frame 41, a plurality of pressing blocks 43 fixedly connected to the third sliding base 42, a first hydraulic cylinder 44 for driving the third sliding base 42 to move vertically, and a second hydraulic cylinder 45 for driving the connecting frame 41 to move horizontally. The shape and size of the pressing blocks 43 are adapted to the shape and size of the space enclosed by the two adjacent stirring blades 20 and the inner wall of the stirring tank 18. When the stirring blades 20 and the connecting frame 41 are both in the initial position, the pressing blocks 43 correspond to the gap position enclosed by the two adjacent stirring blades 20 and the inner wall of the stirring tank 18. The controller 5 is electrically connected to the first hydraulic cylinder 44 and the second hydraulic cylinder 45 respectively.

[0026] After the controller 5 controls the fifth rotary motor 21 to drive the rotary shaft 19 to rotate for a certain period of time, the fifth rotary motor 21 stops working. The controller 5 then controls the second hydraulic cylinder 45 to move the connecting frame 41 horizontally a certain distance so that the pressure block 43 is positioned directly above the mixing tank 18. Then, the controller 5 controls the first hydraulic cylinder 44 to move the third sliding base 42 vertically downward, so that the pressure block 43 presses the solid-liquid mixture tightly, allowing the sawdust to further absorb the hazardous waste liquid and preventing the sawdust in the upper layer from not fully absorbing the hazardous waste liquid. Then, the controller 5 controls the first hydraulic cylinder 44 and the second hydraulic cylinder 45 to reset the third sliding base 42 and the connecting frame 41 respectively, and then continues the stirring work. After repeating this cycle multiple times, the stirring efficiency can be greatly improved, thereby improving the final incineration effect of the hazardous waste liquid solid-liquid mixture.

[0027] The feeding pipe 23 includes a first feeding pipe 46 and a second feeding pipe 47. The first feeding pipe 46 is connected to the bottom of the mixing tank 18, and the second feeding pipe 47 is connected to the first feeding pipe 46. The first feeding pipe 46 is provided with a spiral feeding rod 48 movably connected to the first feeding pipe 46 and an eighth rotary motor 49 for driving the spiral feeding rod 48 to rotate. The spiral feeding rod 48 is coaxially arranged with the first feeding pipe 46, and the controller 5 is electrically connected to the eighth rotary motor 49.

[0028] When the hazardous waste liquid solid-liquid mixture enters the first feeding pipe 46 through the solid-liquid mixing conveying pump 22, the controller 5 controls the eighth rotary motor 49 to drive the screw feeder 48 to rotate. Since the second feeding pipe 47 is connected to the first feeding pipe 46, the material in the first feeding pipe 46 will be driven by the screw feeder 48 to flow into the second feeding pipe 47, and finally enter the feeding tank 30 through the second feeding pipe 47. This can prevent the hazardous waste liquid solid-liquid mixture from clogging the first feeding pipe 46, which could lead to equipment failure.

[0029] It also includes a weighing device 50, which includes a weighbridge 51 connected to the equipment base 1 and a data processor 52 electrically connected to the weighbridge 51. When the feeding bucket 30 is in the initial position, the feeding bucket 30 is placed on the weighbridge 51. The data processor 52 and the weighbridge 51 are electrically connected to the controller 5.

[0030] Since the weighing device 50 includes a weighbridge 51 connected to the equipment base 1 and a data processor 52 electrically connected to the weighbridge 51, when the feeding bucket 30 is in its initial state, the feeding bucket 30 is in contact with the weighbridge 51. At this time, there is no hazardous waste solid-liquid mixture in the feeding bucket 30. The operator controls the weighbridge 51 to perform a tare operation through the controller 5, and then feeds the mixture into the feeding bucket 30 through the feeding pipe 23. When the weight of the hazardous waste solid-liquid mixture reaches the threshold, the data processor 52, being electrically connected to the weighbridge 51, can receive the data transmitted from the weighbridge 51 in real time. The data transmitted from the weighbridge 51 is compared with the threshold preset by the staff. When the weighing data transmitted from the weighbridge 51 exceeds the threshold, the data processor 52 sends an electrical signal to the controller 5. The controller 5 controls the solid-liquid mixing conveying pump 22 to stop working and the feeding pipe 23 to stop feeding material into the feeding bucket 30. Then, the controller 5 uses the lifting device 4 to transport the material in the feeding bucket 30 to the inlet of the incinerator. This ensures that the hazardous waste solid-liquid mixture incinerated each time meets the requirements. The incinerator can fully burn the hazardous waste solid-liquid mixture and improve the treatment efficiency of hazardous waste liquid.

[0031] The second feeding pipe 47 is equipped with a vibration motor 53, which is electrically connected to the controller 5.

[0032] Because the second feeding pipe 47 is equipped with a vibration motor 53, the vibration motor 53 will provide vibration force to the second feeding pipe 47, thereby preventing the hazardous waste solid-liquid mixture from adhering to the inner wall of the second feeding pipe 47. At the same time, the vibration force in the second feeding pipe 47 will also be transmitted to the first feeding pipe 46, which can further prevent the hazardous waste solid-liquid mixture from clogging the first feeding pipe 46, thereby ensuring that the hazardous waste solid-liquid mixture can be discharged completely and improving the incineration effect after the hazardous waste solid-liquid mixture enters the incinerator.

Claims

1. An intelligent dosing system for hazardous liquid waste pretreatment, characterized in that: The device base, the waste material feeding device connected to the device base, the stirring device connected to the device base, the lifting device connected to the device base and the controller, the waste material feeding device includes the tray connected to the device base, the plurality of material barrels stacked on the tray, the rotating base connected to the device base, the first mechanical arm fixedly connected to the rotating base, the second mechanical arm hingedly connected to the first mechanical arm, the third mechanical arm hingedly connected to the second mechanical arm, the fixed base movably connected to the third mechanical arm, the electric clamping jaw connected to the fixed base, the first rotating motor for driving the rotating base to rotate, the second rotating motor for driving the second mechanical arm to rotate, the third rotating motor for driving the third mechanical arm to rotate and the fourth rotating motor for driving the fixed base to rotate, the stirring device includes the stirring barrel connected to the device base, the rotating shaft movably connected to the stirring barrel, the plurality of stirring blades connected to the rotating shaft, the fifth rotating motor for driving the rotating shaft to rotate, the solid-liquid mixture conveying pump connected to the bottom of the stirring barrel and the feeding pipe connected to the stirring barrel, the bottom of the stirring barrel is provided with the feeding port, the feeding pipe is connected to the feeding port, the solid-liquid mixture conveying pump is connected to the connection between the feeding pipe and the feeding port, the lifting device includes the sliding rail connected to the device base, the transmission chain connected to the sliding rail, the first sliding base connected to the transmission chain, the second sliding base hingedly connected to the first sliding base, the fixed frame fixedly connected to the second sliding base, the feeding barrel fixedly connected to the fixed frame, the sixth rotating motor for driving the second sliding base to rotate and the driving motor for driving the transmission chain to move, the rotating base is located between the tray and the stirring barrel, the controller is electrically connected with the first rotating motor, the second rotating motor, the third rotating motor, the fourth rotating motor, the fifth rotating motor, the sixth rotating motor, the driving motor, the solid-liquid mixture conveying pump and the electric clamping jaw respectively, further comprising the sawdust feeding device, the sawdust feeding device includes the sawdust feeding bin, the first discharge pipe connected to the sawdust feeding bin, the slip ring element movably connected to the first discharge pipe, the second discharge pipe movably connected to the slip ring element, the seventh rotating motor for driving the second discharge pipe to rotate, the third discharge pipe connected to the second discharge pipe and the electric shut-off valve connected to the connection between the sawdust feeding bin and the first discharge pipe, the third discharge pipe is L-shaped, the second discharge pipe is coaxially arranged with the stirring barrel, the discharge port position on the third discharge pipe is located within the range of the stirring barrel, the sawdust feeding bin is located directly above the stirring barrel, the controller is electrically connected with the electric shut-off valve and the seventh rotating motor respectively, the feeding pipe includes the first feeding pipe and the second feeding pipe, the first feeding pipe is connected to the bottom of the stirring barrel, the second feeding pipe is in communication with the first feeding pipe, the first feeding pipe is provided with the screw feeding rod movably connected to the first feeding pipe and the eighth rotating motor for driving the screw feeding rod to rotate, the screw feeding rod is coaxially arranged with the first feeding pipe, the controller is electrically connected with the eighth rotating motor.The material in the first feeding pipe is driven by the spiral feeding rod to flow into the second feeding pipe, and finally enters the feeding barrel through the second feeding pipe.

2. The intelligent dosing system for the pretreatment of hazardous liquid waste according to claim 1, characterized in that: The stirring device further comprises a connecting frame slidingly connected to the equipment base, a third sliding base slidingly connected to the connecting frame, a plurality of pressing blocks fixedly connected to the third sliding base, a first hydraulic cylinder for driving the third sliding base to move in the vertical direction, and a second hydraulic cylinder for driving the connecting frame to move in the horizontal direction, the pressing blocks are adapted in shape and size to the space enclosed by the adjacent two stirring blades and the stirring barrel inner wall, when the stirring blades and the connecting frame are both in the initial position, the pressing blocks correspond to the gap position enclosed by the adjacent two stirring blades and the stirring barrel inner wall, and the controller is electrically connected to the first hydraulic cylinder and the second hydraulic cylinder respectively.

3. The intelligent dosing system for the pretreatment of hazardous liquid waste according to claim 1, characterized in that: Further comprising a weighing device, the weighing device comprises a weighbridge connected to the equipment base and a data processor electrically connected to the weighbridge, when the feeding barrel is in the initial position, the feeding barrel is placed on the weighbridge, and the data processor and the weighbridge are electrically connected to the controller respectively.

4. The intelligent feeding system for the pretreatment of hazardous liquid waste according to claim 1, characterized in that: The second feeding pipe is provided with a vibrating motor, and the vibrating motor is electrically connected to the controller.

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