Heavy metal wastewater treatment device with self-cleaning function

Abstract

The invention discloses a heavy metal wastewater treatment device with a self-cleaning function, and relates to the technical field of wastewater treatment.The heavy metal wastewater treatment device comprises a base, a treatment tank, a driving motor, a stirring and collecting component and a cleaning component, the treatment tank is fixedly connected with the base, and the driving motor is fixedly connected with the treatment tank; the output end of the driving motor is in transmission connection with the stirring and collecting component, the stirring and collecting component is used for stirring and collecting sediments, and the cleaning component is in fastening connection with the treatment tank and is used for cleaning the sediments attached to the stirring and collecting component. When wastewater is treated, an agent is added into the wastewater in advance, the driving motor drives the stirring and collecting part to stir in the treatment tank, heavy metal in the wastewater is promoted to precipitate, precipitates are collected, the collected precipitates can gradually move to the position of the cleaning part along with rotation of the stirring and collecting part, and then the precipitates are cleaned through the cleaning part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and particularly relates to a heavy metal wastewater treatment device with a self-cleaning function. BACKGROUND

[0002] A large amount of heavy metal wastewater is generated in the electroplating process, and the wastewater needs to be treated before being discharged. The existing heavy metal wastewater treatment methods mainly include the following several methods. The chemical precipitation method is the most commonly used method, in which a reagent is added to make metal ions form precipitates. The membrane separation technology uses a semi-permeable membrane to efficiently intercept ions, and the effluent water quality is good but the cost is high. The adsorption method and ion exchange method are suitable for deep treatment of low-concentration wastewater. The biological method has low cost but limited efficiency. The mainstream treatment method for electroplating wastewater is the chemical precipitation method, in which an alkali agent is added to generate heavy metal hydroxide or sulfide precipitates, and then the precipitates are separated.

[0003] The current heavy metal wastewater treatment equipment generally has problems of filter membrane easy to be blocked and high maintenance cost. Although the existing technology such as patent CN116903070A a heavy metal wastewater treatment device and process proposes to use the potential energy of wastewater to drive the reciprocating motion of the extrusion assembly, and to prevent the filter membrane from being blocked by backflow and brush cleaning of the cylinder wall, the cleaning mechanism still has limitations. On the one hand, the brush depends on the deformation of the flexible conical cover to realize contact with the cylinder wall, and long-term use can easily cause fatigue failure of the flexible material, reducing the cleaning reliability. On the other hand, the backflow effect depends on the one-way displacement of the extrusion assembly, and the cleaning effect on the deep deposits of the filter membrane pores is limited. In addition, the device needs to be disassembled to replace the filter membrane, and the maintenance process still needs to be operated with the machine stopped. Therefore, it is urgent to develop a heavy metal wastewater treatment device with higher self-cleaning ability and less manual intervention, to further reduce the maintenance frequency and cost while ensuring the filtration efficiency. SUMMARY

[0004] The present application aims to provide a heavy metal wastewater treatment device with a self-cleaning function to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: the heavy metal wastewater treatment device comprises a base, a treatment tank, a driving motor, a stirring and collecting component, and a cleaning component. The treatment tank is tightly connected with the base, the driving motor is tightly connected with the treatment tank, the output end of the driving motor is in transmission connection with the stirring and collecting component, the stirring and collecting component is used for stirring and collecting precipitates, and the cleaning component is tightly connected with the treatment tank and is used for cleaning the precipitates attached to the stirring and collecting component.

[0006] The base is placed on the ground to provide support for the treatment tank, and the driving motor is the main power source of the wastewater treatment device. When treating wastewater, the wastewater is pre-added with reagents, the driving motor drives the stirring and collecting component to stir in the treatment tank, promotes the precipitation of heavy metals in the wastewater, and collects the precipitates. With the rotation of the stirring and collecting component, the collected precipitates gradually move to the position of the cleaning component, and then the cleaning component cleans the precipitates.

[0007] Further, the stirring and collecting component includes a stirring shaft, a collecting assembly, a weight detection assembly, and a distribution detection assembly. The stirring shaft is in transmission connection with the driving motor, the collecting assembly is in fastening connection with the stirring shaft, the weight detection assembly is used for detecting how much precipitate is attached to the collecting assembly, and the distribution detection assembly is used for detecting the distribution of the precipitate on the collecting assembly.

[0008] The stirring shaft is used for transmitting the power of the driving motor to the collecting assembly. When the collecting assembly is attached with precipitates, the resistance of the collecting assembly becomes larger due to the attachment of the precipitates to the collecting assembly. The change of the resistance is detected by the weight detection assembly to determine how much precipitate is attached. The distribution of the precipitates on the collecting assembly may be uneven. The distribution of the precipitates on the collecting assembly is detected by the distribution detection assembly, so that the cleaning component can be cleaned in a targeted manner.

[0009] Further, the cleaning component can automatically adjust the cleaning intensity according to the detection results of the weight detection assembly and the distribution detection assembly.

[0010] The cleaning component can automatically adjust the cleaning intensity according to the weight and distribution of the precipitates, thereby improving the cleaning efficiency.

[0011] Further, the collecting assembly includes a fixed sleeve, a rotating motor, a detection box, a frame, and a filter screen. The fixed sleeve is in fastening connection with the stirring shaft, the rotating motor is in fastening connection with the fixed sleeve, the output end of the rotating motor is in transmission connection with the detection box, the weight detection assembly is located in the detection box, the frame is connected with the weight detection assembly, and the filter screen is provided with rotating shafts at both ends, which are in rotary connection with the frame.

[0012] The fixed sleeve is fixed on the stirring shaft to provide a mounting basis for the collecting assembly. During stirring, the filter screen in the collecting assembly is vertically arranged to have the maximum water-impingement area, so as to stir and collect the precipitates in the wastewater. During cleaning, the rotating motor is started to drive the detection box and the frame to rotate by a certain angle, so that the filter screen is horizontally arranged, thereby facilitating the cleaning of the inside of the cleaning component. The more precipitates are attached to the filter screen, the greater the resistance generated during rotation. The more precipitates are attached to one end of the filter screen, the more the filter screen will be deflected to one side through the rotary connection of the rotating shafts and the frame. By detecting the deflection angle of the filter screen on the frame, it can be determined which side has more precipitates attached.

[0013] Further, the cleaning components are arranged in several groups in the treatment tank, and each group of cleaning components corresponds to a collection assembly.

[0014] In order to improve the cleaning efficiency, the cleaning components arranged in the collection assembly correspond.

[0015] Further, the cleaning component includes a flushing block, a flow guide block, a circulating pump and a drain pipe, a cleaning channel is arranged between the flushing block and the flow guide block, the circulating pump is fixedly connected with the inner wall of the flushing block, the circulating pump is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is communicated with the inner cavity of the treatment tank; the flushing block is provided with a flushing flow channel, the flow guide block is provided with a flow guide groove, the flushing flow channel is communicated with the water outlet pipe, and the flow guide groove is communicated with the drain pipe. When cleaning: the filter screen passes through the cleaning channel.

[0016] The outer shell of the flushing block and the flow guide block is arc-shaped, which can reduce water flow resistance; when the filter screen enters the cleaning channel, the circulating pump is started, water is sucked in through the water inlet pipe, and injected into the flushing flow channel through the water outlet pipe; under the impact of water flow, the deposits attached to the filter screen will be washed away, thereby flowing into the flow guide groove in the flow guide block and being discharged through the drain pipe; that is, the collection assembly collects the deposits in the wastewater, and the cleaning component discharges the collected deposits, thereby realizing automatic collection and cleaning of the deposits and avoiding accumulation of the deposits in the treatment tank.

[0017] Further, the water outlet pipe is provided with three, and each water outlet pipe is provided with an adjusting valve; the flushing flow channel is correspondingly provided with three, and is respectively communicated with the three water outlet pipes.

[0018] By arranging three flushing flow channels, the flushing water flow can impact the middle and both sides of the filter screen respectively, and the water flow of the three water outlet pipes is adjusted through the adjusting valves respectively, so as to wash different areas of the filter screen; by increasing the water flow of the position where the deposits are attached more, the partition cleaning can be realized, thereby improving the cleaning effect.

[0019] Further, the weight detection assembly includes a movable ball, a swing rod, a supporting spring and a pressure sensor, the movable ball is hingedly connected with the detection box, one end of the movable ball is fixedly connected with the frame, the other end of the movable ball is fixedly connected with the swing rod, the detection box is provided with an arc-shaped groove, the swing rod is slidingly connected with the arc-shaped groove, one end of the supporting spring is fixedly connected with the swing rod, the other end of the supporting spring is fixedly connected with the pressure sensor, and the pressure sensor is fixedly connected with the inner wall of the arc-shaped groove.

[0020] The more the deposits attached to the filter screen, the greater the resistance received during rotation, the greater the torque transmitted to the movable ball, through the frame, the movable ball and the swing rod, the structure similar to a lever, the greater the resistance received by the filter screen, the longer the swing rod deflects along the arc-shaped slot, the longer the supporting spring is compressed, and the greater the pressure received by the pressure sensor; that is, the greater the pressure detected by the pressure sensor, the more the deposits attached to the filter screen, at this time, the circulating pump power is increased to increase the water flow impact force, so that the water flow impact force is automatically adjusted according to the amount of deposits on the filter screen, and the cleaning effect is improved.

[0021] Further, the frame is provided with a detection groove, the rotating shaft is provided with a protrusion, the protrusion is in sliding connection with the detection groove, and the two sides of the protrusion are provided with distributed detection assemblies, the distributed detection assemblies comprising an arc-shaped spring and a pressure-sensitive resistor, one end of the arc-shaped spring is in fastening connection with the protrusion, the other end of the arc-shaped spring is in fastening connection with the pressure-sensitive resistor, and the pressure-sensitive resistor is in fastening connection with the inner wall of the detection groove.

[0022] The more the deposits attached to one side of the filter screen, the more the filter screen connected to the frame through the rotating shaft will deflect to the same side, a protrusion is arranged on the rotating shaft, when the rotating shaft deflects, the protrusion will deflect by a certain angle along the detection groove, so that the arc-shaped spring on one side is forced to compress, that is, the more the deposits attached to one side, the greater the pressure received by the pressure-sensitive resistor on this side, and the opening of the adjusting valve at the corresponding position is controlled to increase, so that the position with more deposits attached to the filter screen can be removed.

[0023] Further, the upper end and the lower end of the treatment tank are respectively provided with a water inlet and a water outlet.

[0024] Wastewater enters through the water inlet and is discharged through the water outlet after treatment is completed.

[0025] Compared with the prior art, the beneficial effects of the present application are: 1. The device can monitor the attachment amount and distribution state of the deposits on the filter screen in real time through the weight detection assembly and the distributed detection assembly, and can control the cleaning component in linkage. The weight detection can trigger the circulating pump power adjustment through the resistance change, and the overall water flow impact force is improved; the distributed detection can position the enrichment area through the deflection angle of the filter screen, and dynamically adjust the opening of the adjusting valve of the corresponding flushing flow channel, so that the partition accurate flushing is realized. This design significantly improves the cleaning efficiency without manual intervention.

[0026] 2. The collection assembly innovatively adopts a double mode of vertical stirring and horizontal cleaning: when stirring, the filter screen is vertically expanded to maximize the pollution collection area; when cleaning, the rotating motor drives it to horizontally turn, and the cleaning channel formed by the flushing block and the flow guide block closely cooperates, the deposits are automatically stripped through hydraulic flushing, and are directly discharged out of the system through the flow guide groove and the drain pipe. This structure not only avoids the accumulation of deposits in the treatment tank, but also ensures the continuous operation of the device, greatly improves the treatment flux and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A partial cross-sectional view of a processing tank according to the present invention; Figure 3 It is a partial cross-sectional view of a cleaning component; Figure 4 A schematic diagram of a cleaning component; Figure 5 for Figure 4 A local enlarged view of point A; Figure 6 It is a schematic diagram of the stirring and collecting component of the present invention; Figure 7 is a schematic diagram of the collection component; Figure 8 for Figure 7 A partial enlarged view of point B; Figure 9 is a schematic diagram of the distributed detection components; Figure 10 for Figure 9 A partial enlarged view of point C.

[0028] In the figure: 1, base; 2, treatment tank; 21, water inlet; 22, water outlet; 3, drive motor; 4, stirring and collecting component; 41, stirring shaft; 42, collecting component; 421, fixing sleeve; 422, rotating motor; 423, detection box; 4231, arc groove; 424, frame; 4241, detection groove; 425, filter; 426, rotating shaft; 4261, bump; 43, weight detection component; 43 1. Active ball; 432. Swing rod; 433. Support spring; 434. Pressure sensor; 44. Distribution detection component; 441. Arc spring; 442. Piezoresistor; 5. Cleaning parts; 51. Flushing block; 511. Flushing channel; 52. Guide block; 521. Guide groove; 53. Circulation pump; 531. Water inlet pipe; 532. Water outlet pipe; 54. Drain pipe; 55. Cleaning channel; 56. Regulating valve. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example: Figures 1-10As shown, the present application provides a heavy metal wastewater treatment device with self-cleaning function technical scheme, the heavy metal wastewater treatment device includes base 1, treatment tank 2, drive motor 3, stirring collection component 4 and cleaning component 5, treatment tank 2 is fastened with base 1, drive motor 3 is fastened with treatment tank 2, the output end of drive motor 3 is transmission connection with stirring collection component 4, stirring collection component 4 is used for stirring and collecting precipitate, cleaning component 5 is fastened with treatment tank 2, cleaning component 5 is used for cleaning the precipitate attached on stirring collection component 4.

[0031] Base 1 is placed on the ground to provide support for treatment tank 2, drive motor 3 is the main power source of the wastewater treatment device, when treating wastewater, wastewater is pre-added with reagent, drive motor 3 drives stirring collection component 4 to stir in treatment tank 2, promotes the precipitation of heavy metals in wastewater, and collects the precipitate, with the rotation of stirring collection component 4, the collected precipitate will gradually move to the position of cleaning component 5, and then the precipitate is cleaned by cleaning component 5.

[0032] Stirring collection component 4 includes stirring shaft 41, collection assembly 42, weight detection assembly 43 and distribution detection assembly 44, stirring shaft 41 is transmission connection with drive motor 3, collection assembly 42 is fastened with stirring shaft 41, weight detection assembly 43 is used for detecting how much precipitate is attached on collection assembly 42, distribution detection assembly 44 is used for detecting the distribution of precipitate on collection assembly 42.

[0033] Stirring shaft 41 is used for transmitting the power of drive motor 3 to collection assembly 42, when collection assembly 42 is attached with precipitate, the resistance of collection assembly 42 becomes larger due to the attachment of precipitate on collection assembly 42, the change of the resistance is detected by weight detection assembly 43 to determine how much precipitate is attached; the distribution of precipitate on collection assembly 42 may be uneven, the distribution of precipitate on collection assembly 42 is detected by distribution detection assembly 44, so that cleaning component 5 can clean in a targeted manner.

[0034] Cleaning component 5 can automatically adjust its cleaning strength according to the detection results of weight detection assembly 43 and distribution detection assembly 44.

[0035] Cleaning component 5 can automatically adjust the cleaning strength according to the weight and distribution of precipitate, so as to improve the cleaning efficiency.

[0036] The collecting assembly 42 comprises a fixing sleeve 421, a rotating motor 422, a detection box 423, a frame 424 and a filter screen 425, the fixing sleeve 421 is fixedly connected with the stirring shaft 41, the rotating motor 422 is fixedly connected with the fixing sleeve 421, the output end of the rotating motor 422 is in transmission connection with the detection box 423, the weight detection assembly 43 is located in the detection box 423, the frame 424 is connected with the weight detection assembly 43, both ends of the filter screen 425 are provided with rotating shafts 426, and the rotating shafts 426 are rotationally connected with the frame 424.

[0037] The fixing sleeve 421 is fixed on the stirring shaft 41, thereby providing a mounting base for the collecting assembly 42; when stirring, the filter screen 425 in the collecting assembly 42 is vertically arranged, so that the water receiving area is maximum, and the precipitate in the wastewater can be stirred and collected; when cleaning, the rotating motor 422 is started, thereby driving the detection box 423 and the frame 424 to rotate by a certain angle, so that the filter screen 425 is horizontally arranged, thereby facilitating the cleaning into the inside of the cleaning component 5; the more the precipitate attached on the filter screen 425, the greater the resistance generated in the rotating process; the more the precipitate attached on one end of the filter screen 425, the filter screen 425 connected with the frame 424 through the rotating shafts 426 will be deflected to one side, and the deflection angle of the filter screen 425 on the frame 424 can be detected, thereby judging which side has more precipitate attached.

[0038] The cleaning component 5 is arranged in the treatment tank 2 in a plurality of groups, and each group of the cleaning component 5 corresponds to one collecting assembly 42.

[0039] In order to improve the cleaning efficiency, the cleaning component 5 corresponding to the collecting assembly 42 is arranged.

[0040] The cleaning component 5 comprises a flushing block 51, a flow guide block 52, a circulating pump 53 and a drain pipe 54, the flushing block 51 and the flow guide block 52 are provided with a cleaning channel 55, the circulating pump 53 is fixedly connected with the inner wall of the flushing block 51, the circulating pump 53 is provided with a water inlet pipe 531 and a water outlet pipe 532, the water inlet pipe 531 is in communication with the inner cavity of the treatment tank 2; the flushing block 51 is provided with a flushing flow channel 511, the flow guide block 52 is provided with a flow guide groove 521, the flushing flow channel 511 is in communication with the water outlet pipe 532, and the flow guide groove 521 is in communication with the drain pipe 54. When cleaning, the filter screen 425 passes through the cleaning channel 55.

[0041] The outer shell of the flushing block 51 and the guide block 52 is an arc surface, which can reduce the water flow resistance; when the filter 425 enters the cleaning channel 55, the circulation pump 53 is started, and water is sucked in through the water inlet pipe 531 and injected into the flushing channel 511 through the water outlet pipe 532. Under the impact of the water flow, the sediment attached to the filter 425 will be washed down and flow into the guide groove 521 in the guide block 52 and discharged through the drain pipe 54; that is, the sediment in the wastewater is collected by the collecting component 42, and then the collected sediment is discharged through the cleaning component 5, thereby realizing the automatic collection and cleaning of the sediment, and avoiding the sediment from accumulating in the treatment tank 2.

[0042] There are three water outlet pipes 532 , and each water outlet pipe 532 is provided with a regulating valve 56 ; there are correspondingly three flushing channels 511 , which are respectively connected to the three water outlet pipes 532 .

[0043] By setting up three flushing channels 511, the flushing water flow can impact the middle and two side positions of the filter 425 respectively, and then the water flow rate of the three outlet pipes 532 is adjusted respectively by the regulating valve 56 to flush different areas of the filter 425 in a targeted manner; by increasing the water flow size at the position where more sediment is attached, zoned cleaning can be achieved, thereby improving the cleaning effect.

[0044] The weight detection component 43 includes a movable ball 431, a swing rod 432, a support spring 433 and a pressure sensor 434. The movable ball 431 is hinged to the detection box 423, one end of the movable ball 431 is fastened to the frame 424, and the other end of the movable ball 431 is fastened to the swing rod 432. An arc groove 4231 is provided in the detection box 423, and the swing rod 432 is slidingly connected to the arc groove 4231. One end of the support spring 433 is fastened to the swing rod 432, and the other end of the support spring 433 is fastened to the pressure sensor 434. The pressure sensor 434 is fastened to the inner wall of the arc groove 4231.

[0045] The more sediment attached to the filter screen 425, the greater the resistance it encounters during rotation, and the greater the torque transmitted to the movable ball 431. The frame 424, the movable ball 431 and the swing rod 432 form a lever-like structure. The greater the resistance the filter screen encounters, the longer the distance the swing rod 432 deflects along the arc groove 4231, the longer the distance the support spring 433 is compressed, and the greater the pressure on the pressure sensor 434; that is, when the pressure detected by the pressure sensor 434 is greater, the more sediment attached to the filter screen 425, at this time, the power of the circulation pump 53 is increased to increase the impact force of the water flow, thereby realizing automatic adjustment of the impact force of the water flow according to the amount of sediment on the filter screen 425, thereby improving the cleaning effect.

[0046] The frame 424 is provided with a detection groove 4241, the rotating shaft 426 is provided with a protrusion 4261, the protrusion 4261 is in sliding connection with the detection groove 4241, both sides of the protrusion 4261 are provided with a distribution detection assembly 44, the distribution detection assembly 44 comprises an arc-shaped spring 441 and a piezoresistor 442, one end of the arc-shaped spring 441 is in fastening connection with the protrusion 4261, the other end of the arc-shaped spring 441 is in fastening connection with the piezoresistor 442, and the piezoresistor 442 is in fastening connection with the inner wall of the detection groove 4241.

[0047] The more the precipitates attached to one side of the filter screen 425, the more the filter screen connected to the frame 424 through the rotating shaft 426 will be deflected to the same side, by arranging a protrusion 4261 on the rotating shaft 426, when the rotating shaft 426 is deflected, the protrusion 4261 will be deflected by a certain angle along the detection groove 4241, so that the arc-shaped spring 441 on one side is forced to compress, that is, the more the precipitates attached to one side, the greater the pressure on the piezoresistor 442 on the same side, and the opening of the adjusting valve 56 at the corresponding position is controlled to increase, so that the position with more precipitates attached to the filter screen 425 can be removed.

[0048] The upper and lower ends of the treatment tank 2 are respectively provided with a water inlet 21 and a water outlet 22.

[0049] The wastewater enters through the water inlet 21 and is discharged through the water outlet 22 after treatment is completed.

[0050] The working principle of the present application is as follows: the heavy metal wastewater enters the treatment tank 2 through the water inlet 21, after pre-adding reagents, the driving motor 3 drives the stirring collection component 4 to rotate, stirs the wastewater to promote heavy metal precipitation, and directly absorbs the precipitates.

[0051] Weight detection: the weight detection assembly 43 senses the rotating resistance of the filter screen 425, and the greater the resistance, the more the precipitates attached.

[0052] Distribution detection: the distribution detection assembly 44 monitors the deflection angle of the protrusion 4261 on the rotating shaft 426, if the precipitates on one side of the filter screen 425 are too much, the protrusion 4261 compresses the spring on the corresponding side, and the pressure value of the piezoresistor 442 increases, indicating that the precipitates are unevenly distributed.

[0053] When cleaning, the motor 422 rotates the filter screen 425 to a horizontal state into the cleaning passage 55 of the cleaning component 5. The circulating pump 53 pumps water from the treatment tank 2, injects into the flushing flow channel 511 through the three water outlets 532 with adjusting valves 56, and forms a directional water flow to flush the filter screen 425.

[0054] Self-adaptive adjustment: according to the weight detection result, the power of the circulating pump 53 is increased to improve the overall water flow impact force; according to the distribution detection result, the opening of the adjusting valve 56 in the corresponding area is adjusted to strengthen the flushing on the side where the precipitates are concentrated.

[0055] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be construed as limiting the scope of the claims.

Claims

1. A heavy metal wastewater treatment device with a self-cleaning function, characterized in that: The heavy metal wastewater treatment device comprises a base (1), a treatment tank (2), a drive motor (3), a stirring and collecting component (4) and a cleaning component (5), wherein the treatment tank (2) is firmly connected to the base (1), the drive motor (3) is firmly connected to the treatment tank (2), the output end of the drive motor (3) is transmission-connected to the stirring and collecting component (4), the stirring and collecting component (4) is used for stirring and collecting sediment, the cleaning component (5) is firmly connected to the treatment tank (2), and the cleaning component (5) is used for cleaning sediment attached to the stirring and collecting component (4).

2. The heavy metal wastewater treatment device with self-cleaning function according to claim 1, characterized in that: The stirring and collecting component (4) comprises a stirring shaft (41), a collecting assembly (42), a weight detection assembly (43) and a distribution detection assembly (44); the stirring shaft (41) is in driving connection with the driving motor (3); the collecting assembly (42) is firmly connected to the stirring shaft (41); the weight detection assembly (43) is used to detect the amount of sediment attached to the collecting assembly (42); and the distribution detection assembly (44) is used to detect the distribution of the sediment on the collecting assembly (42).

3. The heavy metal wastewater treatment device with self-cleaning function according to claim 2, characterized in that: The cleaning component (5) can automatically adjust its cleaning strength according to the detection results of the weight detection component (43) and the distribution detection component (44).

4. The heavy metal wastewater treatment device with self-cleaning function according to claim 2, characterized in that: The collecting assembly (42) comprises a fixed sleeve (421), a rotating motor (422), a detection box (423), a frame (424) and a filter (425). The fixed sleeve (421) is tightly connected to the stirring shaft (41), the rotating motor (422) is tightly connected to the fixed sleeve (421), the output end of the rotating motor (422) is transmission-connected to the detection box (423), the weight detection assembly (43) is located in the detection box (423), the frame (424) is connected to the weight detection assembly (43), and rotating shafts (426) are provided at both ends of the filter (425), and the rotating shafts (426) are rotationally connected to the frame (424).

5. The heavy metal wastewater treatment device with self-cleaning function according to claim 4, characterized in that: The cleaning components (5) are arranged in a plurality of groups in the processing tank (2), and each group of cleaning components (5) corresponds to one of the collecting components (42).

6. The heavy metal wastewater treatment device with self-cleaning function according to claim 5, characterized in that: The cleaning component (5) comprises a flushing block (51), a guide block (52), a circulation pump (53) and a drain pipe (54); a cleaning channel (55) is provided between the flushing block (51) and the guide block (52); the circulation pump (53) is tightly connected to the inner wall of the flushing block (51); a water inlet pipe (531) and a water outlet pipe (532) are provided on the circulation pump (53); the water inlet pipe (531) is communicated with the inner cavity of the treatment tank (2); a flushing flow channel (511) is provided on the flushing block (51); a guide groove (521) is provided on the guide block (52); the flushing flow channel (511) is communicated with the water outlet pipe (532), and the guide groove (521) is communicated with the drain pipe (54); During cleaning: the filter screen (425) passes through the cleaning channel (55).

7. The heavy metal wastewater treatment device with self-cleaning function according to claim 6, characterized in that: There are three water outlet pipes (532), and each water outlet pipe (532) is provided with a regulating valve (56); there are correspondingly three flushing channels (511), which are respectively connected to the three water outlet pipes (532).

8. The heavy metal wastewater treatment device with self-cleaning function according to claim 4, characterized in that: The weight detection assembly (43) includes a movable ball (431), a swing rod (432), a support spring (433) and a pressure sensor (434). The movable ball (431) is hinged to the detection box (423). One end of the movable ball (431) is fastened to the frame (424), and the other end of the movable ball (431) is fastened to the swing rod (432). An arc groove (4231) is provided in the detection box (423). The swing rod (432) is slidably connected to the arc groove (4231). One end of the support spring (433) is fastened to the swing rod (432), and the other end of the support spring (433) is fastened to the pressure sensor (434). The pressure sensor (434) is fastened to the inner wall of the arc groove (4231).

9. The heavy metal wastewater treatment device with self-cleaning function according to claim 4, characterized in that: A detection slot (4241) is provided on the frame (424), a protrusion (4261) is provided on the rotating shaft (426), the protrusion (4261) is slidably connected to the detection slot (4241), and a distribution detection assembly (44) is provided on both sides of the protrusion (4261). The distribution detection assembly (44) includes an arc spring (441) and a piezoresistor (442), one end of the arc spring (441) is fastened to the protrusion (4261), and the other end of the arc spring (441) is fastened to the piezoresistor (442), and the piezoresistor (442) is fastened to the inner wall of the detection slot (4241).

10. The heavy metal wastewater treatment device with self-cleaning function according to claim 1, characterized in that: The upper and lower ends of the treatment tank (2) are respectively provided with a water inlet (21) and a water outlet (22).

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