Industrial wastewater treatment device with heavy metal recovery function

Abstract

The present application relates to wastewater treatment technical field, provide a kind of industrial wastewater treatment device with heavy metal recovery function, comprising: sedimentation tank, for carrying out the heavy metal chemical precipitation work of wastewater treatment, the bottom side of the sedimentation tank is fixedly connected with multiple sleeves, the inside of the sleeve is slidably connected with sedimentation sludge collection head, the top end of the sedimentation sludge collection head penetrates the inner wall bottom side of sedimentation tank, multiple the sedimentation sludge collection head is controlled by lifting roller to carry out reciprocating lifting work, to collect the heavy metal sludge that is settled down along the slope of the inner wall of the sedimentation tank. When wastewater is precipitated, the heavy metal sludge collection work of precipitation can be carried out simultaneously, and the heavy metal sludge is uniformly dewatered. The telescopic pipe that can reciprocate can simulate the peristalsis and contraction of intestinal tract, cooperate with rubber protrusion, can prevent the heavy metal sludge from being accumulated and blocked after entering the inside of telescopic pipe, accelerate the delivery of heavy metal sludge.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an industrial wastewater treatment device with heavy metal recovery function. Background Technology

[0002] With the acceleration of industrialization, wastewater generated during industrial production has caused serious environmental pollution, especially wastewater containing heavy metals such as copper, lead, zinc, and antimony. These heavy metals pose a great threat to the environment and human health. They are difficult to degrade naturally in the environment and can accumulate and amplify through the food chain, posing a long-term threat to ecosystems and human health. Therefore, the research and application of industrial wastewater treatment technologies, especially technologies for the recovery and removal of heavy metals, are particularly important.

[0003] In existing industrial wastewater heavy metal recovery processes, the resulting heavy metal precipitates all settle to the bottom of the sedimentation tank. Recovery is only possible after wastewater treatment is complete, leading to a continuous accumulation of sludge inside the sedimentation tank. This reduces the tank's capacity, impacting the wastewater treatment volume and efficiency. Therefore, an industrial wastewater treatment device with heavy metal recovery capabilities is needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an industrial wastewater treatment device with heavy metal recovery capabilities. This solves the problem that existing industrial wastewater heavy metal recovery processes can only be carried out after wastewater treatment is completed, which affects the amount of wastewater that can be treated.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An industrial wastewater treatment device with heavy metal recovery function includes:

[0007] A sedimentation tank is used for the chemical precipitation of heavy metals in wastewater treatment. Multiple sleeves are fixedly connected to the bottom of the sedimentation tank. Sludge collection heads are slidably connected inside the sleeves. The top of the sludge collection heads penetrates the bottom of the inner wall of the sedimentation tank. Multiple sludge collection heads are controlled by lifting rollers to reciprocate and lift, so as to collect the heavy metal sludge that settles down the slope of the inner wall of the sedimentation tank.

[0008] The heavy metal recovery chamber is located at the bottom of the sedimentation tank and receives the heavy metal sludge collected by the sedimentation sludge collection head through multiple telescopic pipes fixed on the top side. The heavy metal sludge is then filtered twice by the filter components inside the heavy metal recovery chamber to remove the water from the heavy metal sludge. With the assistance of the cleaning roller, the heavy metal sludge is prevented from causing blockage.

[0009] A suction tank is fixedly connected to the right side of the heavy metal recovery chamber. A second suction pipe is fixedly connected to the front side of the suction tank. The second suction pipe is connected to the top opening of the front side of the sedimentation tank through a pipe. The bottom left side of the suction tank is connected to the right side of the heavy metal recovery chamber through multiple suction pipes. The top side of the suction tank uses traction rollers to reciprocate and pull multiple piston pumps to slowly suction the heavy metal recovery chamber and the sedimentation tank, drawing water into the interior of the heavy metal recovery chamber. A discharge pipe is fixedly connected to the rear side of the heavy metal recovery chamber. A branch pipe is fixedly connected to the outer wall of the sedimentation tank. Multiple spray nozzles are fixedly connected to the inner circumference of the branch pipe, and the spray nozzles penetrate the inner wall of the sedimentation tank. The discharge pipe transports water to the branch pipe connected to the multiple spray nozzles through a connecting pipe. The spray nozzles spray water to impact the heavy metal sludge accumulated on the inclined surface of the inner wall of the sedimentation tank.

[0010] The traction roller, cleaning roller, and lifting roller are connected by a belt and three pulleys, and the lifting roller, driven by a motor, drives the traction roller and cleaning roller to rotate together.

[0011] Preferably, the lifting roller includes a rotating rod fixedly connected to the top side of the heavy metal recovery chamber. Multiple abutment wheels are fixedly connected to the outer wall of the rotating rod. The abutment wheels have an elliptical outline. Abutment frames are fixedly connected to the adjacent sides of the four adjacent sedimentation sludge collection heads. The outer wall of the abutment wheel abuts against the bottom side of the abutment frame.

[0012] Preferably, the filtration assembly includes a filter cylinder fixedly connected inside the heavy metal recovery chamber, the top opening of the filter cylinder being located at the bottom side of the telescopic tube, and a filter cloth being fitted onto the outer wall of the filter cylinder.

[0013] Preferably, the cleaning roller includes a rotating rod II located inside the filter cylinder. The front end of the rotating rod II passes through the front side of the heavy metal recovery chamber and is rotatably connected to the heavy metal recovery chamber. Multiple scraping frames are fixedly connected to both sides of the outer wall of the rotating rod II. The scraping frames clean the inner wall of the filter cylinder with the cooperation of the cleaning kit to prevent clogging.

[0014] Preferably, the cleaning kit includes a scraper head and a brush head, with the two scraper frames on both sides being centrally symmetrical. The scraper head is fixedly connected to one end of the scraper frame, and the brush head is fixedly connected to the other end of the scraper frame.

[0015] Preferably, the piston pump includes a plurality of cylinders fixedly connected to the top side of the suction tank, and a piston is slidably connected inside the cylinder.

[0016] Preferably, the traction roller includes a rotating rod three rotatably connected to the top side of the suction tank. The rotating rod three is located at the top left end of the cylinder. A turntable is rotatably connected to the top of the cylinder. The turntable is connected to a gear through two meshing gears. The turntable is connected to the top side of the piston through a connecting rod.

[0017] Preferably, one of the pulleys is fixedly connected to the front side of the first rotating rod, another pulley is fixedly connected to the front side of the second rotating rod, and the remaining pulley is fixedly connected to the front side of the third rotating rod. The size of the remaining pulley is larger than that of the other two pulleys, and the drive end of the motor is fixedly connected to the rear side of the first rotating rod.

[0018] Preferably, the inner wall of the telescopic tube is fixedly connected with multiple rubber protrusions to transport the heavy metal sludge inside during the stretching and contraction of the telescopic tube.

[0019] Preferably, the sedimentation tank is provided with a detachable filter plate at the top of its inner wall to separate and screen out the uppermost layer of suspended clear liquid.

[0020] Working principle: Industrial wastewater, after pH adjustment and preliminary filtration, is poured into the sedimentation tank. A chemical precipitant is added to separate the heavy metals dissolved in the water, causing the heavy metals to precipitate from the water and become heavy metal sludge. After sedimentation for a period of time, the filter plate is covered, the motor is started, and the motor drives the first rotating rod to rotate, which in turn drives the second and third rotating rods to rotate through the belt and three pulleys.

[0021] When the rotating rod rotates, it drives the connected abutment wheel to rotate synchronously, causing the elliptical abutment wheel to abut against the abutment frame along its edge. This abutment frame, connected to the sludge collection head, is subjected to force, causing it to rise and fall along the edge of the abutment wheel. This, in turn, causes the sludge collection head to move up and down reciprocally, and drives the connected telescopic pipe to reciprocate and extend. This allows the top of the sludge collection head with the opening to enter the bottom of the sedimentation tank. The heavy metal sludge settled at the bottom of the sedimentation tank enters the sludge collection head along with the water under water pressure. It then flows through the sludge collection head and the connected telescopic pipe into the heavy metal recovery chamber. The telescopic pipe accelerates the process of sludge entering the heavy metal recovery chamber by simulating peristalsis, preventing blockage.

[0022] The heavy metal sludge that enters the heavy metal recovery chamber will then enter the filter cartridge. The water that enters along with the sludge will be separated from the sludge by the filter cartridge and filter cloth and stored inside the heavy metal recovery chamber.

[0023] When the rotating rod 2 rotates, it will drive the scraper connected to it to rotate, so that the scraper uses the scraper head to scrape the inner wall of the filter cylinder and the brush head to brush the inner wall, thereby breaking up the sludge accumulated on the inner wall, preventing it from accumulating excessively, and maintaining the filtration and separation of water.

[0024] During its rotation, the rotating rod three drives two meshing gear-driven turntables, causing the connecting rod driven by the turntables to move in an eccentric wheel structure. This reciprocates the movement of the piston connected to the connecting rod on the bottom side, causing it to move up and down. This causes the piston to move back and forth inside the cylinder, changing the pressure inside the suction tank connected to the cylinder. When the piston rises, a negative pressure is generated inside the suction tank, causing suction pipes one and two connected to the suction tank to generate negative pressure simultaneously. Suction pipe one draws water from the heavy metal recovery chamber connected to it, while suction pipe two draws water from the upper layer of the sedimentation tank through the pipe and pours it into the suction tank. When the piston falls, the pressure inside the heavy metal recovery chamber increases, and the water flows out through the discharge pipe. With the pressure, it enters the branch pipe through the pipe connected to the discharge pipe and is sprayed out through the opening of the spray nozzle. The impact force of the high-pressure water flow impacts the heavy metal sludge accumulated on the inclined surface of the inner wall of the sedimentation tank, guiding it to accumulate at the bottom of the sedimentation tank.

[0025] The upper suspension of the wastewater filter plate after heavy metal treatment is completed is exported. This process is repeated, adding wastewater for treatment. By opening the hatch at the rear of the heavy metal recovery chamber, the rear opening of the filter cartridge can be exposed, and the heavy metal precipitated sludge can be cleaned out from inside the filter cartridge and moved to other processes for metal recovery.

[0026] This invention provides an industrial wastewater treatment device with heavy metal recovery function. It possesses the following features:

[0027] Beneficial effects:

[0028] 1. This invention can simultaneously collect the precipitated heavy metal sludge during wastewater sedimentation and dewater the heavy metal sludge in a unified manner. The reciprocating telescopic tube can simulate intestinal peristalsis and contraction. With the help of rubber protrusions, it can prevent the heavy metal sludge from accumulating and clogging after entering the telescopic tube, accelerate the transport of heavy metal sludge, and prevent excessive accumulation of heavy metal sludge while separating water from it, thus stabilizing the precipitation process.

[0029] 2. This invention can reuse the water in the recovered heavy metal sludge. While it is put back into the sedimentation tank for recycling, it can also be used to impact the slope at the bottom of the sedimentation tank to guide the flow of the sludge, so that the sludge accumulated on the slope sinks into the bottom of the sedimentation tank more quickly, thus speeding up the sludge collection process. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention;

[0031] Figure 2 This is a schematic diagram showing the position of the motor in this invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the sedimentation tank of the present invention;

[0033] Figure 4 This is a schematic diagram of the sludge collection head of the present invention;

[0034] Figure 5 This is a schematic diagram showing the position of the abutment wheel of the present invention;

[0035] Figure 6 This is a schematic diagram of the internal structure of the telescopic tube of the present invention;

[0036] Figure 7 This is a schematic diagram of the internal structure of the heavy metal recovery chamber of the present invention;

[0037] Figure 8 This is a schematic diagram of the gear connection structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the connection structure of the suction can of the present invention;

[0039] Figure 10 This is a schematic diagram of the connection structure between the suction tank and the sedimentation tank of the present invention.

[0040] The components include: 1. Sedimentation tank; 2. Heavy metal recovery chamber; 3. Suction tank; 4. Sedimentation sludge collection head; 5. Sleeve; 6. Telescopic pipe; 7. Abutment frame; 8. Rotating rod one; 9. Abutment wheel; 10. Filter cylinder; 11. Filter cloth; 12. Rotating rod two; 13. Scraper frame; 14. Scraper head; 15. Brush head; 16. Rotating rod three; 17. Gear; 18. Turntable; 19. Cylinder body; 20. Piston; 21. Suction pipe one; 22. Suction pipe two; 23. Discharge pipe; 24. Branch pipe; 25. Spray nozzle; 26. Filter plate. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example:

[0043] This invention provides an industrial wastewater treatment device with heavy metal recovery function, comprising:

[0044] Please see the appendix Figure 1 - Appendix Figure 3 Sedimentation tank 1 is used for heavy metal chemical precipitation in wastewater treatment. Multiple sleeves 5 are fixedly connected to the bottom side of sedimentation tank 1. Sludge collection heads 4 are slidably connected inside the sleeves 5. The top of the sludge collection heads 4 penetrates the bottom side of the inner wall of sedimentation tank 1. Multiple sludge collection heads 4 are controlled by lifting rollers to reciprocate and lift to collect heavy metal sludge that settles down the slope of the inner wall of sedimentation tank 1. The slope helps to guide the settled heavy metal sludge to the bottom of sedimentation tank 1.

[0045] Please see the appendix Figure 3 - Appendix Figure 5 The lifting roller includes a rotating rod 8 fixedly connected to the top side of the heavy metal recovery chamber 2. Multiple abutting wheels 9 are fixedly connected to the outer wall of the rotating rod 8. The outline of the abutting wheels 9 is elliptical. Abutting frames 7 are fixedly connected to the adjacent side of four adjacent sedimentation sludge collection heads 4. The outer wall of the abutting wheel 9 abuts against the bottom side of the abutting frame 7.

[0046] Specifically, the connection points of the sleeve 5 and the sludge collection head 4 and the sedimentation tank 1 are all sealed to prevent water leakage. When the rotating rod 8 rotates, it drives the connected abutment wheel 9 to rotate synchronously, causing the elliptical abutment wheel 9 to abut against the abutment frame 7 along its edge. This puts force on the abutment frame 7 connected to the sludge collection head 4, causing the abutment frame 7 to rise and fall along the edge line of the abutment wheel 9. This causes the sludge collection head 4 to move up and down reciprocally, and drives the connected telescopic pipe 6 to reciprocate and extend. This allows the top of the sludge collection head 4 with the opening to enter the bottom of the sedimentation tank 1. The heavy metal sludge settled at the bottom of the sedimentation tank 1 enters the interior of the sludge collection head 4 under the action of water pressure, and then enters the heavy metal recovery chamber 2 through the interior of the sludge collection head 4 and the connected telescopic pipe 6. The abutting wheel 9 and the abutting frame 7 are provided with lubricating oil to reduce the force loss caused by friction, making it easier for the abutting wheel 9 to lift the abutting frame 7 and extending the service life of the abutting wheel 9 and the abutting frame 7.

[0047] Please see the appendix Figure 2 and attached Figure 7 The heavy metal recovery chamber 2 is located at the bottom of the sedimentation tank 1 and receives the heavy metal sludge collected by the sedimentation sludge collection head 4 through multiple telescopic pipes 6 fixed on the top side. The heavy metal sludge is then filtered twice by the filter components inside the heavy metal recovery chamber 2 to remove the water in the heavy metal sludge. With the assistance of the cleaning roller, the heavy metal sludge is prevented from causing blockage, so as to accelerate the precipitation rate and improve the processing efficiency.

[0048] The filtration assembly includes a filter cylinder 10 fixedly connected inside the heavy metal recovery chamber 2. The top opening of the filter cylinder 10 is located at the bottom of the telescopic tube 6. A filter cloth 11 is fitted onto the outer wall of the filter cylinder 10. The cleaning roller includes a rotating rod 12 located inside the filter cylinder 10. The front end of the rotating rod 12 passes through the front side of the heavy metal recovery chamber 2 and is rotatably connected to the heavy metal recovery chamber 2. Multiple scraping frames 13 are fixedly connected to both sides of the outer wall of the rotating rod 12. The scraping frames 13 clean the inner wall of the filter cylinder 10 with the cooperation of the cleaning kit to prevent clogging. The cleaning kit consists of a scraping head 14 and a brush head 15. The two scraping frames 13 are centrally symmetrical. The scraping head 14 is fixedly connected to one end of the scraping frame 13, and the brush head 15 is fixedly connected to the other end of the scraping frame 13.

[0049] Specifically, the heavy metal sludge entering the heavy metal recovery chamber 2 will enter the filter cartridge 10. The water that enters along with the sludge will be separated from the sludge by the filter cartridge 10 and filter cloth 11 and stored inside the heavy metal recovery chamber 2. The filter cloth 11 can be removed and replaced. In addition, a sealed door is provided at the rear of the heavy metal recovery chamber 2. After the heavy metal treatment of the wastewater is completed, the door can be opened to clean out the heavy metal sludge from inside the filter cartridge 10. When the rotating rod 12 rotates, it will drive the scraper 13 connected to it to rotate. The scraper 13 will use the scraper head 14 to scrape the inner wall of the filter cartridge 10 and the brush head 15 to brush the inner wall, thereby breaking up the sludge accumulated on the inner wall, preventing excessive accumulation, and maintaining the water filtration and separation. Both the scraper head 14 and the brush head 15 can be removed and replaced.

[0050] Please see the appendix Figure 3 Appendix Figure 8 and attached Figure 9A suction tank 3 is fixedly connected to the right side of the heavy metal recovery chamber 2. A second suction pipe 22 is fixedly connected to the front side of the suction tank 3. The second suction pipe 22 is connected to the opening at the top front of the sedimentation tank 1 through a pipe. The bottom left side of the suction tank 3 is connected to the right side of the heavy metal recovery chamber 2 through multiple first suction pipes 21. The top side of the suction tank 3 uses traction rollers to reciprocate and pull multiple piston pumps to slowly suction water into the heavy metal recovery chamber 2 and the sedimentation tank 1, drawing water into the interior of the heavy metal recovery chamber 2. A discharge pipe 23 is fixedly connected to the rear side of the heavy metal recovery chamber 2. A branch pipe 24 is fixedly connected to the outer wall of the sedimentation tank 1. Multiple spray nozzles 25 are fixedly connected to the inner circumference of the branch pipe 24, and the spray nozzles 25 penetrate the sedimentation tank 1. The inner wall of the sedimentation tank 1 is connected to the branch pipe 24, which is connected to multiple spray nozzles 25, through the discharge pipe 23. The spray nozzles 25 spray water to impact the heavy metal sludge accumulated on the inclined surface of the inner wall of the sedimentation tank 1. The connection of the suction tank 3 is sealed to prevent external air from entering. The inner walls of the suction pipe 1 21, suction pipe 22 and discharge pipe 23 are equipped with one-way valve diaphragms for one-way passage to prevent backflow of the suction water and the discharge water. The top of the pipe connected to suction pipe 22 is higher than the top plane of the sedimentation tank 1 to prevent the phenomenon of self-directed flow of the connecting pipe and to prevent water in the sedimentation tank 1 from actively entering the suction tank 3 through the pipe.

[0051] Please see the appendix Figure 8 - Appendix Figure 10 The piston pump includes multiple cylinders 19 fixedly connected to the top side of the suction tank 3. A piston 20 is slidably connected inside the cylinder 19. The traction roller includes a rotating rod 16 rotatably connected to the top side of the suction tank 3. The rotating rod 16 is located at the top left end of the cylinder 19. A turntable 18 is rotatably connected to the top of the cylinder 19. The turntable 18 is connected to the gear 17 through two meshing gears 17. The turntable 18 and the top side of the piston 20 are connected by a connecting rod to form an eccentric wheel structure.

[0052] Specifically, during its rotation, the rotating rod 16 drives the turntable 18 to rotate via two meshing gears 17. This causes the connecting rod driven by the turntable 18 to move in an eccentric wheel-like motion, reciprocatingly pulling the piston 20 connected to the connecting rod on the bottom side to move up and down. This causes the piston 20 to reciprocate inside the cylinder 19, changing the pressure inside the suction tank 3 connected to the cylinder 19. When the piston 20 rises, a negative pressure is generated inside the suction tank 3, causing the suction pipes 21 and 22 connected to the suction tank 3 to simultaneously generate negative pressure, thus... Suction pipe 21 draws water from the interior of the heavy metal recovery chamber 2 connected to it, and suction pipe 22 draws water from the upper layer of the sedimentation tank 1 through the pipe, pouring it into the suction tank 3. When piston 20 descends, the pressure inside the heavy metal recovery chamber 2 increases, and water flows out through discharge pipe 23. With the pressure, it enters branch pipe 24 through the pipe connected to discharge pipe 23 and is sprayed out through the opening of spray nozzle 25. The impact force of the high-pressure water flow impacts the heavy metal sludge accumulated on the inclined surface of the inner wall of sedimentation tank 1, guiding it to accumulate at the bottom of the interior of sedimentation tank 1.

[0053] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 7 The traction roller, cleaning roller, and lifting roller are connected by belts and three pulleys. The lifting roller, driven by a motor, drives the traction roller and cleaning roller to rotate together. One pulley is fixedly connected to the front of the first rotating rod 8, another pulley is fixedly connected to the front of the second rotating rod 12, and the remaining pulley is fixedly connected to the front of the third rotating rod 16. The remaining pulley is larger than the other two pulleys to slow down the rotation speed of the traction roller used to drive the suction, thereby avoiding excessively high suction frequency and affecting the frequency of water injection into the spray nozzle 25. This also prevents excessively high water flow from disturbing the sedimentation of wastewater. The drive end of the motor is fixedly connected to the rear of the first rotating rod 8.

[0054] Please see the appendix Figure 6 Multiple rubber protrusions are fixedly connected to the inner wall of the telescopic tube 6 to transport the heavy metal sludge inside during the stretching and contraction of the telescopic tube 6, simulating the peristalsis and contraction of the intestine. In conjunction with the rubber protrusions, the heavy metal sludge can be prevented from accumulating and causing blockage after entering the interior of the telescopic tube 6.

[0055] Please see the appendix Figure 1 The sedimentation tank 1 is equipped with a detachable filter plate 26 at the top of its inner wall to separate and screen out the uppermost layer of suspended clear liquid.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial wastewater treatment device with heavy metal recovery function, characterized in that, Include: The sedimentation tank (1) is used for heavy metal chemical precipitation of wastewater treatment, the bottom side of the sedimentation tank (1) is fixedly connected with a plurality of sleeves (5), the inside of the sleeve (5) is slidably connected with a sedimentation sludge collecting head (4), the top end of the sedimentation sludge collecting head (4) penetrates the inner wall bottom side of the sedimentation tank (1), a plurality of the sedimentation sludge collecting head (4) is controlled by the lifting roller to reciprocatingly lift and lower to collect the heavy metal sludge which is settled along the slope of the inner wall of the sedimentation tank (1); The heavy metal recovery chamber (2) is located at the bottom side of the sedimentation tank (1), and receives the heavy metal sludge collected by the sedimentation sludge collecting head (4) through the top side fixedly connected with a plurality of telescopic pipes (6), is filtered again by the filter assembly in the heavy metal recovery chamber (2), and the water in the heavy metal sludge is separated out, and the heavy metal sludge is prevented from being blocked under the assistance of the cleaning roller; The suction tank (3) is fixedly connected to the right side of the heavy metal recovery chamber (2), the front side of the suction tank (3) is fixedly connected with a suction pipe two (22), the suction pipe two (22) is connected with the front side top end opening of the sedimentation tank (1) through a pipeline, the left side bottom end of the suction tank (3) is connected with the right side of the heavy metal recovery chamber (2) through a plurality of suction pipes one (21), the top side of the suction tank (3) reciprocatingly pulls a plurality of piston pumps through a traction roller to slowly perform suction work on the heavy metal recovery chamber (2) and the sedimentation tank (1), and water is sucked into the inside of the heavy metal recovery chamber (2), the rear side of the heavy metal recovery chamber (2) is fixedly connected with a discharge pipe (23), the outer wall of the sedimentation tank (1) is fixedly connected with a branch pipe (24), a plurality of jet nozzles (25) are fixedly connected to the inner periphery of the branch pipe (24), and the jet nozzles (25) penetrate the inner wall of the sedimentation tank (1), the discharge pipe (23) transports water to the branch pipe (24) connected with a plurality of jet nozzles (25) through a connecting pipe, and water is sprayed out by the jet nozzles (25) to impact the heavy metal sludge accumulated on the inclined surface of the inner wall of the sedimentation tank (1); The traction roller, the cleaning roller and the lifting roller are connected through a belt and three pulleys, and the lifting roller driven by the motor drives the traction roller and the cleaning roller to rotate.

2. The industrial wastewater treatment device having a heavy metal recovery function according to claim 1, characterized by, The lifting roller includes a rotating rod one (8) fixedly connected to the top side of the heavy metal recovery chamber (2), a plurality of abutting wheels (9) are fixedly connected to the outer wall of the rotating rod one (8), the abutting wheels (9) are oval in shape, and the adjacent sides of the four adjacent sedimentation sludge collecting heads (4) are fixedly connected with abutting frames (7), and the outer wall of the abutting wheels (9) abuts the bottom side of the abutting frame (7).

3. The industrial wastewater treatment device with heavy metal recovery function according to claim 1, characterized in that, The filter assembly includes a filter cylinder (10) fixedly connected to the inside of the heavy metal recovery chamber (2), and the top side opening of the filter cylinder (10) is located at the bottom side of the telescopic pipe (6), and the outer wall of the filter cylinder (10) is sleeved with a filter cloth (11).

4. The industrial wastewater treatment device having a heavy metal recovery function according to claim 3, characterized by, The cleaning roller comprises a rotating rod two (12) located inside the filter cylinder (10), the front end of the rotating rod two (12) penetrates through the front side of the heavy metal recovery chamber (2) and is rotationally connected with the heavy metal recovery chamber (2), the outer wall of the rotating rod two (12) is fixedly connected with a plurality of scraping frames (13) on both sides, and the scraping frames (13) clean the inner wall of the filter cylinder (10) under the cooperation of the cleaning kit to prevent blockage.

5. The industrial wastewater treatment device having a heavy metal recovery function according to claim 4, characterized by, The cleaning kit comprises a scraping head (14) and a brush head (15), the scraping frames (13) on both sides are centrally symmetric, the scraping head (14) is fixedly connected to one end of the scraping frame (13), and the brush head (15) is fixedly connected to the other end of the scraping frame (13).

6. The industrial wastewater treatment device having a heavy metal recovery function according to claim 1, characterized by The piston pump comprises a plurality of cylinder bodies (19) fixedly connected to the top side of the suction tank (3), and the piston (20) is slidably connected inside the cylinder body (19).

7. The industrial wastewater treatment device having a heavy metal recovery function according to claim 6, characterized by The traction roller comprises a rotating rod three (16) rotationally connected to the top side of the suction tank (3), the rotating rod three (16) is located at the top side left end of the cylinder body (19), the top end of the cylinder body (19) is rotationally connected with a rotating disc (18), the rotating disc (18) and the gear (17) are connected through two meshing gears, and the top side of the rotating disc (18) and the piston (20) are connected through a connecting rod.

8. The industrial wastewater treatment device with heavy metal recovery function according to any one of claims 2, 4, 7, characterized in that, One of the belt pulleys is fixedly connected to the front side of the rotating rod one (8), another belt pulley is fixedly connected to the front side of the rotating rod two (12), the remaining one belt pulley is fixedly connected to the front side of the rotating rod three (16), and the remaining one belt pulley is larger than the other two belt pulleys in size, and the driving end of the motor is fixedly connected to the rear side of the rotating rod one (8).

9. The industrial wastewater treatment device having a heavy metal recovery function according to claim 1, characterized by, The inner wall of the telescopic pipe (6) is fixedly connected with a plurality of rubber protrusions to convey the heavy metal sludge inside during the stretching and contraction movement of the telescopic pipe (6).

10. The industrial wastewater treatment device having a heavy metal recovery function according to claim 1, characterized in that, The inner wall of the sedimentation tank (1) is provided with a detachable filter plate (26) at the top end, so as to separate and screen out the uppermost suspended clear liquid.

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