An apparatus for deeply multi-stage treating industrial wastewater

Abstract

The present invention discloses a device for deeply multi-stage treating industrial wastewater, and the wastewater treatment process steps of the device are as follows: 1) collecting the wastewater through a collecting tank; 2) introducing the wastewater in the collecting tank into a pH adjustment tank, testing the pH value of the sewage in the tank through a pH tester in the pH adjustment tank, and adjusting the pH value to pH 3-5.5; 3) the adjusted wastewater enters an iron-carbon reactor, and iron-carbon micro-electrolysis treatment is carried out on the wastewater in the iron-carbon reactor, and the reaction time is 40-95 minutes; 4) the wastewater treated by the iron-carbon reactor enters a neutralization device to neutralize the wastewater and adjust the pH value of the sewage to 7-9; 5) the neutralized wastewater is introduced into an anaerobic device for anaerobic treatment; 6) the wastewater treated anaerobically is subjected to sedimentation treatment through a sedimentation tank. The present invention can change the flow direction of the wastewater, can not only accelerate the neutralization rate of the wastewater, but also make the wastewater neutralize more evenly; and can prevent a large amount of anaerobic bacteria sludge from being carried inside the discharged clear water.

Description

Technical Field

[0001] The present invention belongs to the technical field of industrial wastewater treatment, and particularly relates to a device for deeply multi-stage treating industrial wastewater. Background Art

[0002] The wastewater, sewage and waste liquid generated during industrial production contain industrial production materials, intermediate products and products lost with water, as well as pollutants generated during the production process.

[0003] After retrieval, the prior art publication number CN116730547A discloses a wastewater treatment equipment and treatment method. The equipment includes a winding removal device, a basket filter, a water spraying pipeline, a vertical flow constructed wetland pond, an anaerobic treatment system, a gas-liquid separation device and a PLC control system; the wastewater enters the box body through the water inlet pipeline of the winding removal device, and the separated wastewater flows into the basket filter through the first drainage pipeline. The wastewater treated by the basket filter is sprayed onto the vertical flow constructed wetland pond through the water spraying pipeline and flows to the anaerobic treatment system through the second drainage pipeline for treatment. The biogas containing moisture generated by the anaerobic treatment system flows to the gas-liquid separation device through the first exhaust pipeline; its treatment process has the following disadvantages: Although the anaerobic treatment system in the above wastewater treatment equipment can achieve good gas-liquid separation, during the process of discharging the wastewater degraded by anaerobic bacteria through the third drainage pipeline after precipitation in the anaerobic treatment system, part of the sludge is easily carried in the discharged water, thus affecting the wastewater treatment effect; moreover, there is no stirring mechanism, and the mixing of the wastewater entering the anaerobic treatment system and the anaerobic bacteria is uneven.

[0004] The prior art publication number CN219384879U discloses an industrial wastewater pretreatment neutralization device, which belongs to the technical field of wastewater pretreatment. It includes a device main body, the upper end of the device main body is provided with a top cover, and a water inlet pipe is connected to the device main body. An outlet pipe is fixed on the device main body, and a motor is provided on the top cover, and a rotating shaft is connected to the lower end of the motor; the stirring structure is detachably connected to the rotating shaft; its treatment process has the following disadvantages: By stirring and mixing the wastewater and the neutralizing agent through the stirring blades, only the wastewater can flow horizontally, and the stirring effect of the wastewater in the vertical direction is not good, resulting in uneven stirring of the wastewater and the neutralizing agent. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a device for deeply multi-stage treating industrial wastewater. Through the cooperation of a neutralization mechanism and a mixing mechanism, the wastewater is stirred in multiple directions, thereby being able to change the flow direction of the wastewater, which can not only accelerate the neutralization rate of the wastewater but also make the neutralization of the wastewater more uniform; it can realize the recycling of biogas; when entering the separation tank for separation, the wastewater is subjected to multi-stage precipitation through a baffle, a compression plate and a "V"-shaped plate, which can prevent a large amount of anaerobic bacteria sludge from being carried inside the discharged clear water.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A device for deeply multi-stage treating industrial wastewater, and the wastewater treatment process steps of the device are as follows:

[0008] 1) Collect the wastewater through a collection tank;

[0009] 2) Introduce the wastewater in the collection tank into a pH adjustment tank, test the pH value of the wastewater in the tank through a pH tester in the pH adjustment tank, and adjust the pH value to pH 3 - 5.5;

[0010] 3) The adjusted wastewater enters an iron-carbon reactor, and the wastewater is subjected to iron-carbon micro-electrolysis treatment in the iron-carbon reactor. The reaction time is 40 - 95 min, and a gas containing oxygen is introduced into the reactor; Iron-carbon micro-electrolysis mainly refers to mixing iron filings and carbon particles into an iron-carbon bed layer in which iron and carbon are in close contact. When the wastewater to be treated passes through the iron-carbon bed layer, the active iron will form the anode, and the inert carbon will form the cathode, which will form countless micro-galvanic cells in the wastewater, and a series of electrochemical oxidation-reduction reactions will occur at the two poles of the micro-galvanic cells, so as to achieve the purpose of degrading the pollutants in the wastewater;

[0011] 4) The wastewater treated by the iron-carbon reactor enters a neutralization device to neutralize the wastewater and adjust the pH value of the wastewater to 7 - 9, which is convenient for sedimentation treatment of the wastewater;

[0012] 5) The neutralized wastewater is introduced into an anaerobic device for anaerobic treatment, so as to fully decompose the remaining organic matter;

[0013] 6) Sediment the anaerobically treated wastewater through a sedimentation tank;

[0014] The neutralization device in step 4) includes a box body, a water inlet pipe, a neutralization chamber, a neutralization mechanism, and a partition; The partition is fixed inside the box body, dividing the box body into a neutralization chamber and an anaerobic chamber; The water inlet pipe is located on the side wall of the box body and communicates with the neutralization chamber; The neutralization mechanism is installed in the neutralization chamber; The wastewater enters the neutralization chamber through the water inlet pipe, and then a neutralizing agent is introduced into the neutralization chamber. The wastewater and the neutralizing agent are mixed through the neutralization mechanism, which can not only accelerate the neutralization rate of the wastewater but also make the wastewater be neutralized evenly.

[0015] The anaerobic chamber, water distribution pipe, stirring mechanism, separation mechanism, and water outlet pipe in the anaerobic device in step 5); the water distribution pipe connects the neutralization chamber and the anaerobic chamber, and several branch pipes are provided on the water distribution pipe; the stirring mechanism is installed in the anaerobic chamber, the separation mechanism is installed in the anaerobic chamber above the stirring mechanism, and the water outlet pipe is located on the side wall of the box body and communicates with the anaerobic chamber; the neutralized wastewater is pumped to the bottom of the anaerobic chamber through the water distribution pipe. When the wastewater flows upward through the fixed anaerobic filler, the anaerobic bacteria in the anaerobic filler decompose the organic matter in the wastewater; then the wastewater continues to flow upward, the stirring mechanism stirs the wastewater, and at the same time the wastewater contacts the anaerobic filler in the stirring mechanism, so as to perform secondary anaerobic treatment on the wastewater, so that the organic matter in the wastewater can be fully decomposed; finally, the decomposed wastewater enters the separation mechanism, and the separation mechanism separates and discharges the biogas and sludge in the wastewater, and the clean water is discharged through the water outlet pipe.

[0016] The neutralization mechanism includes an installation ring, an installation plate, a moving plate, an intermediate plate, a transmission plate, a connecting plate, a bidirectional threaded rod, a support plate, a motor I, a square plate, and a motor II; the square plate is fixed on the inner side wall of the box body, the installation ring is rotatably connected to the square plate through a bearing, and a toothed ring is provided on the outer side wall of the installation ring; the motor II is fixed on the square plate, and a gear I is provided on the output shaft; there are a pair of installation plates, symmetrically fixed on the inner side wall of the installation ring, and a guide groove is provided on the installation plate; there are a pair of support plates, both fixed on the side wall of the box body, and a turntable is provided on the top of the support plate; both ends of the bidirectional threaded rod are rotatably connected to the turntable of the support plate through a bearing; both ends of the moving plate are movably connected in the corresponding guide grooves, the transmission plate is threadedly connected to the bidirectional threaded rod, and both ends of the connecting plate are rotatably connected to the moving plate and the transmission plate through a bearing shaft respectively; the intermediate plate is fixed on the connecting plate between the connecting plate and the transmission plate; the motor I is fixed on the turntable on the top of the support plate, and the output end is connected to one end of the bidirectional threaded rod; the motor I provides power to drive the bidirectional threaded rod to rotate, the bidirectional threaded rod drives the transmission plate to move up and down through the thread, the transmission plate drives the moving plate to move along the guide groove through the connecting plate, and at the same time drives the intermediate plate to move, so that the transmission plate, the intermediate plate, and the moving plate are located at different heights, so as to be able to stir the wastewater at different depths and make the wastewater neutralize more evenly; the motor II provides power to drive the gear I to rotate, the gear I drives the toothed ring to rotate, the toothed ring drives the installation ring to rotate, and the installation ring drives the installation plate, the intermediate plate, and the connecting plate to rotate, so as to stir the wastewater.

[0017] Both ends of the intermediate plate are provided with fixed columns, the inside of the fixed columns is hollow, the motor V is fixed inside the fixed columns, and a stirring fan blade is connected to the output shaft; the motor V provides power to drive the stirring fan blade to rotate, and the stirring fan blade stirs the wastewater.

[0018] A mixing mechanism is provided on the mounting plate. The mixing mechanism includes a rotating shaft, a conical cylinder, an arc plate, an inclined plate, a motor VI, a spiral blade, and a shielding plate. The rotating shaft is rotatably connected to the mounting plate through a bearing. The conical cylinders are symmetrically installed on the rotating shaft. The arc plates are evenly connected to the outer side wall of the conical cylinder with the conical cylinder as the center. The inclined plate is fixed to the inner side wall of the larger-diameter end of the conical cylinder and can stir the wastewater entering the conical cylinder. The spiral blade is located inside the conical cylinder and is rotatably connected to the rotating shaft. The shielding plate is fixed to the end of the arc plate away from the conical cylinder and can ensure that the wastewater enters the conical cylinder along the arc plate. The motor VI is fixed inside the mounting plate, and its output end is connected to the rotating shaft. The motor VI provides power to drive the rotating shaft to rotate, and the rotating shaft drives the conical cylinder to rotate, thereby stirring the wastewater. At the same time, the arc plate scrapes the wastewater into the conical cylinder, allowing the wastewater to enter through the larger-diameter end of the conical cylinder and discharge through the smaller-diameter end, thus being able to change the flow direction of the wastewater, which can not only accelerate the neutralization rate of the wastewater but also make the neutralization of the wastewater more uniform.

[0019] The separation mechanism includes a separation box, a "V"-shaped plate, a partition plate, a water tank, a baffle plate, a filter plate, a sliding door, a support arm, a motor VII, a gear II, and a rack I. The separation box is fixed inside the box body. A communication hole is provided on the side wall of the separation box, and several ventilation openings are provided on the top of the separation box. The partition plate is fixed to the inner side wall of the separation box and divides the separation box into two parts. The water tank is fixed to the partition plate. Several water inlets are provided on the water tank, and the water inlets are located above the "V"-shaped plate. One end of the water tank is connected to the outlet pipe. The "V"-shaped plates are evenly fixed to the side wall of the water tank and the inner wall of the separation box. The baffle plates are fixed to both ends of the water tank close to the communication hole. A pair of filter plates are symmetrically fixed to the inner side wall of the separation box, and a sewage discharge groove is provided between the filter plates. A sliding groove is provided on the communication hole of the separation box, and the sliding door is movably installed in the sliding groove. The support arm is fixed to the outer side wall of the sliding door. The motor VII is fixedly hung at the top of the support arm. The gear II is connected to the output shaft of the motor VII. The rack I is fixed to the side wall above the communication hole of the separation box. The rack I is meshed with the gear II. The motor VII provides power to drive the gear II to rotate, causing the gear II to move along the rack I, thereby driving the support arm and the sliding door to move. When the sliding door moves to one side, the communication hole of the separation box on one side of the partition plate is opened. The wastewater decomposed by anaerobic bacteria enters the separation box on one side of the partition plate through the opened communication hole, flows downward after being blocked by the baffle plate, and at the same time, the biogas in the wastewater flows upward, so that the wastewater and biogas can be quickly separated. Then the wastewater moves upward and precipitates through the "V"-shaped plate, thereby separating the water and the sludge. The separated water enters the inside of the water tank through the water inlet, while the sludge precipitates downward and falls on the filter plate and then enters the sewage discharge groove and is discharged.

[0020] Inside the separation box, there is a concentration mechanism, which includes a compression plate, a rotating rod, an adjusting plate, a motor IV, a sprocket, a chain, a fixing plate, and an electric push rod; the fixing plate is fixed on the outer side wall of the separation box, there are a pair of electric push rods, which are respectively fixed on the side wall of the fixing plate and inside the partition plate, there are a pair of adjusting plates, which are respectively connected to the output ends of the corresponding electric push rods, both ends of the rotating rod pass through the limiting grooves and are respectively rotatably connected to the corresponding adjusting plates, the compression plate is fixed on the rotating rod, several sprockets are arranged at one end of the rotating rod close to the adjusting plate, and adjacent sprockets are meshed and connected by a chain; the motor IV is fixed on the adjusting plate, and the output end is connected to the rotating rod; the motor IV provides power to drive the rotating rod to rotate, the rotating rod drives the adjacent rotating rods to rotate through the sprockets and the chain, and the rotating rod drives the compression plate to rotate, so as to adjust the angle of the compression plate; when precipitating the wastewater, the compression plate is adjusted to a certain inclination angle with the filter plate, when the wastewater flows upward through the compression plate, the sludge in the wastewater contacts the inclined compression plate and is blocked, so as to separate the water from the sludge; then when there is more precipitation on the filter plate; the electric push rod provides power to drive the adjusting plate to move, the adjusting plate drives the rotating rod and the compression plate to move along the limiting groove, drives the compression plate parallel to the filter plate to move, so as to concentrate the precipitation on the filter plate; after the concentration is completed, the compression plate is moved to a suitable position, and then the compression plate is driven to rotate by the motor IV, the precipitation on the filter plate is scraped into the sewage discharge groove, and finally discharged through the sewage discharge pipe.

[0021] The stirring mechanism includes a fixed shaft, a rotating sleeve, a connecting frame, a fixed roller, a hollow plate, a plug board, a flow disturbing plate, a receiving plate, and a motor III; the receiving plate is fixed on the inner side wall of the box body, and the fixed shaft is fixed on the receiving plate; the rotating sleeve is located outside the fixed shaft, the connecting frame is connected to the rotating sleeve, a bevel gear I is arranged at the top of the rotating sleeve, there are a pair of fixed rollers, which are symmetrically fixed on the fixed shaft up and down, and spiral grooves are arranged on the outer side wall of the fixed roller; one end of the "Z" - shaped rod is rotatably connected to the connecting frame, and the other end is movably connected to the spiral groove; there are two groups of hollow plates, which are respectively rotatably connected to the corresponding "Z" - shaped rods; the plug board is fixed on the outer side wall of one group of hollow plates, and the flow disturbing plate is connected to the outer side wall of the other group of hollow plates; the motor III is fixed on the top of the box body, and the output end is provided with a bevel gear II, and the bevel gear I and the bevel gear II are meshed and connected; the motor III provides power to drive the rotating sleeve to rotate through the bevel gear I and the bevel gear II, the rotating sleeve drives the connecting frame to rotate, the connecting frame drives the hollow plate to rotate, further drives the plug board and the flow disturbing plate to rotate; at the same time drives the "Z" - shaped rod to rotate, so that one end of the "Z" - shaped rod moves along the spiral groove on the surface of the fixed roller, further makes the other end of the "Z" - shaped rod swing, and the "Z" - shaped rod drives the hollow plate to swing;

[0022] A fine-tuning mechanism is provided inside the hollow plate. The fine-tuning mechanism includes a waterproof shell, a motor VIII, a gear III, a rack II, a cam, and a grid plate. The grid plate is provided with a number of rotating shafts evenly rotatably connected to the inner wall of the hollow plate. The cam is connected to the rotating shaft at one end of the grid plate. The waterproof shell is fixed at one end of the hollow plate. The motor VIII is fixed at the top of the hollow plate inside the waterproof shell. The gear III is connected to the output shaft of the motor VIII. The rack II is rotatably connected to the end of the cam away from the grid plate through a rotating shaft. The rack II is meshed with the gear III. The motor VIII provides power to drive the gear III to rotate. The gear III drives the rack II to move. The rack II drives the grid plate to swing through the cam, so as to be able to stir the anaerobic filler inside the hollow plate, and at the same time be able to adjust the direction of the wastewater entering the hollow plate, so as to change the flow direction of the wastewater, and also be able to control the flow rate of the wastewater entering the hollow plate.

[0023] The beneficial effects of the present invention compared with the prior art are as follows:

[0024] 1) In the neutralization mechanism, the motor I provides power to drive the bidirectional threaded rod to rotate. The bidirectional threaded rod drives the transmission plate to move up and down through the thread. The transmission plate drives the moving plate to move along the guide groove through the connecting plate, and at the same time drives the middle plate to move, so that the transmission plate, the middle plate, and the moving plate are located at different heights, so as to be able to stir the wastewater at different depths and make the neutralization of the wastewater more uniform. The motor II provides power to drive the gear I to rotate. The gear I drives the toothed ring to rotate. The toothed ring drives the installation ring to rotate. The installation ring drives the installation plate, the middle plate, and the connecting plate to rotate. At the same time, the motor VI provides power to drive the rotating shaft to rotate. The rotating shaft drives the conical cylinder to rotate, so as to stir the wastewater. At the same time, the arc plate scrapes the wastewater into the conical cylinder, so that the wastewater enters through the large-diameter end of the conical cylinder and is discharged through the small-diameter end, so as to be able to change the flow direction of the wastewater, which can not only accelerate the neutralization rate of the wastewater, but also make the neutralization of the wastewater more uniform.

[0025] 2) In the separation mechanism, the motor VII provides power to drive the gear II to rotate, so that the gear II moves along the rack I, so as to drive the support arm and the push-pull door to move. When the push-pull door moves to one side, the communication hole on one side of the separation box separated by the partition plate is opened. The wastewater decomposed by anaerobic bacteria enters the separation box on one side of the partition plate through the opened communication hole, and flows downward after being blocked by the baffle. At the same time, the biogas in the wastewater flows upward, so as to be able to quickly separate the wastewater and the biogas. Then the wastewater moves upward and precipitates through the "V"-shaped plate, so as to separate the water and the mud. The separated water enters the water tank through the water inlet, and the sludge precipitates downward and falls on the filter plate. Move the push-pull door to open the communication hole on the other side of the partition plate to separate the wastewater. Then it is convenient to discharge the sludge on the side closed by the push-pull door through the sewage discharge groove.

[0026] 3) The organic matter in the wastewater is degraded by anaerobic bacteria to produce a large amount of biogas, enabling the recovery and utilization of biogas. When entering the separation tank for separation, the wastewater is subjected to multi-stage precipitation through baffles, compression plates, and "V"-shaped plates, which can prevent a large amount of sludge from being carried inside the discharged clear water. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. Figure 1 is a schematic structural diagram of a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0028] FIG. Figure 2 is a schematic internal structural diagram of a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0029] FIG. Figure 3 is a schematic structural diagram of a neutralization tank of a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0030] FIG. Figure 4 is a schematic structural diagram of a neutralization mechanism in a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0031] FIG. Figure 5 is a schematic structural diagram of a mixing mechanism in a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0032] FIG. Figure 6 is a schematic structural diagram of a separation mechanism in a device for deep multi-stage treatment of industrial wastewater according to the present invention Figure 1 ;

[0033] FIG. Figure 7 is FIG. Figure 6 an enlarged structural diagram of part A in FIG.

[0034] FIG. Figure 8 is a schematic structural diagram of a separation mechanism in a device for deep multi-stage treatment of industrial wastewater according to the present invention Figure 2 ;

[0035] FIG. Figure 9 is a schematic diagram of the water flow direction of a separation mechanism in a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0036] FIG. Figure 10 is a schematic structural diagram of a separation mechanism in a device for deep multi-stage treatment of industrial wastewater according to the present invention Figure 3 ;

[0037] FIG. Figure 11 is a schematic structural diagram of a stirring mechanism in a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0038] FIG. Figure 12 is a schematic structural diagram of a hollow plate in a device for deep multi-stage treatment of industrial wastewater according to the present invention;

[0039] In the figure: 1. Box body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Neutralization bin; 5. Neutralization mechanism; 501. Installation ring; 5011. Tooth ring; 502. Installation plate; 5021. Guide groove; 503. Moving plate; 504. Intermediate plate; 5041. Fixed column; 5042. Motor V; 5043. Stirring fan blade; 505. Transmission plate; 506. Connecting plate; 507. Bidirectional threaded rod; 508. Mixing mechanism; 5081. Rotating shaft; 5082. Conical cylinder; 5083. Arc plate; 5084. Inclined plate; 5085. Motor VI; 5086. Spiral blade; 5087. Baffle; 509. Support plate; 5091. Turntable; 510. Motor I; 511. Square plate; 512. Motor II; 5121. Gear I; 6. Anaerobic bin; 7. Water distribution pipe; 8. Stirring mechanism; 801. Fixed shaft; 802. Rotating sleeve; 8021. Bevel gear II; 803. Connecting frame; 804. Fixed roller; 8041. Spiral groove; 805. Hollow plate; 806. Fine-tuning mechanism; 8061. Waterproof shell; 8062. Motor VIII; 8063. Gear III; 8064. Rack II; 8065. Cam; 8066. Grid plate; 807. Plug board; 808. Turbulence plate; 809. Bearing plate; 810. Motor III; 8101. Bevel gear I; 811. "Z"-shaped rod; 9. Separation mechanism; 901. Separation box; 9011. Communication hole; 9012. Limit groove; 902. "V"-shaped plate; 903. Partition plate; 904. Water tank; 9041. Water inlet; 905. Baffle; 906. Concentration mechanism; 9061. Compression plate; 9062. Rotating rod; 9063. Adjusting plate; 9064. Motor IV; 9065. Sprocket; 9066. Chain; 9067. Fixed plate; 9068. Electric push rod; 907. Filter plate; 9071. Sewage tank; 908. Sliding door; 909. Support arm; 910. Motor VII; 911. Gear II; 912. Rack I; 11. Partition board. Detailed implementation manners

[0040] For the convenience of understanding by those skilled in the art, the technical solutions of the present invention will be further specifically described below with reference to the Figures 1-12 drawings.

[0041] Embodiment 1

[0042] A device for deeply multi-stage treating industrial wastewater, and the wastewater treatment process steps of the device are as follows:

[0043] 1) Collect wastewater through a collection tank;

[0044] 2) Feed the wastewater in the collection tank into a pH adjustment tank, test the pH value of the sewage in the tank through a pH meter in the pH adjustment tank, and adjust the pH value to pH3;

[0045] 3) The adjusted wastewater enters the iron-carbon reactor, where the wastewater is subjected to iron-carbon micro-electrolysis treatment for 40 minutes, and a gas containing oxygen is introduced into the reactor. Iron-carbon micro-electrolysis mainly refers to mixing iron filings and carbon particles to form an iron-carbon bed layer in which iron and carbon are in close contact. When the wastewater to be treated passes through the iron-carbon bed layer, the active iron forms the anode, and the inert carbon forms the cathode, which will form countless micro-galvanic cells in the wastewater. A series of electrochemical oxidation-reduction reactions will occur at the two poles of the micro-galvanic cells, so as to achieve the purpose of degrading pollutants in the wastewater.

[0046] 4) The wastewater treated by the iron-carbon reactor enters the neutralization device to neutralize the wastewater and adjust the pH value of the sewage to 7.

[0047] 5) The neutralized wastewater is introduced into the anaerobic device for anaerobic treatment, so as to fully decompose the remaining organic matter.

[0048] 6) The wastewater treated anaerobically is subjected to sedimentation treatment through a sedimentation tank.

[0049] The neutralization device in step 4) includes a box body 1, a water inlet pipe 2, a neutralization chamber 4, a neutralization mechanism 5, and a partition 11. The partition 11 is fixed inside the box body 1, dividing the box body 1 into a neutralization chamber 4 and an anaerobic chamber 6. The water inlet pipe 2 is located on the side wall of the box body and communicates with the neutralization chamber 4. The neutralization mechanism 5 is installed in the neutralization chamber 4. The wastewater enters the neutralization chamber 4 through the water inlet pipe 2, and then a neutralizing agent is introduced into the neutralization chamber 4. The neutralization mechanism 5 mixes the wastewater and the neutralizing agent, which can not only accelerate the neutralization rate of the wastewater but also make the wastewater be neutralized evenly.

[0050] The anaerobic device in step 5) includes an anaerobic chamber 6, a water distribution pipe 7, a stirring mechanism 8, a separation mechanism 9, and a water outlet pipe 3. The water distribution pipe 7 connects the neutralization chamber 4 and the anaerobic chamber 6, and several branch pipes are provided on the water distribution pipe 7. The stirring mechanism 8 is installed in the anaerobic chamber 6, and the separation mechanism 9 is installed in the anaerobic chamber 6 above the stirring mechanism 8. The water outlet pipe is located on the side wall of the box body and communicates with the anaerobic chamber. The neutralized wastewater is pumped to the bottom of the anaerobic chamber 6 through the water distribution pipe 7. When the wastewater flows upward through the fixed anaerobic packing, the anaerobic bacteria in the anaerobic packing decompose the organic matter in the wastewater. Then the wastewater continues to flow upward, and the stirring mechanism 8 stirs the wastewater. At the same time, the wastewater comes into contact with the anaerobic packing in the stirring mechanism 8, so as to conduct secondary anaerobic treatment on the wastewater, and thus the organic matter in the wastewater can be fully decomposed. Finally, the decomposed wastewater enters the separation mechanism 9, and the separation mechanism 9 separates and discharges the biogas and sludge in the wastewater, while the clean water is discharged through the water outlet pipe 3.

[0051] The neutralization mechanism 5 includes a mounting ring 501, a mounting plate 502, a moving plate 503, an intermediate plate 504, a transmission plate 505, a connecting plate 506, a bidirectional threaded rod 507, a support plate 509, a motor I 510, a square plate 511, and a motor II 512; the square plate 511 is fixed on the inner side wall of the box body 1, the mounting ring 501 is rotatably connected to the square plate 511 through a bearing, and a toothed ring 5011 is provided on the outer side wall of the mounting ring 501; the motor II 512 is fixed on the square plate 511, and a gear I 5121 is provided on the output shaft; there are a pair of mounting plates 502, symmetrically fixed on the inner side wall of the mounting ring 501, and a guide groove 5021 is provided on the mounting plate 502; there are a pair of support plates 509, both fixed on the side wall of the box body 1, and a turntable 5091 is provided on the top of the support plate 509; both ends of the bidirectional threaded rod 507 are rotatably connected to the turntable 5091 of the support plate 509 through bearings; both ends of the moving plate 503 are movably connected in the corresponding guide grooves 5021, the transmission plate 505 is threadedly connected to the bidirectional threaded rod 507, and both ends of the connecting plate 506 are respectively rotatably connected to the moving plate 503 and the transmission plate 505 through bearing shafts; the intermediate plate 504 is fixed on the connecting plate 506 between the connecting plate 506 and the transmission plate 505; the motor I 510 is fixed on the turntable 5091 on the top of the support plate 509, and the output end is connected to one end of the bidirectional threaded rod 507; the motor I 510 provides power to drive the bidirectional threaded rod 507 to rotate, the bidirectional threaded rod 507 drives the transmission plate 505 to move up and down through the thread, the transmission plate 505 drives the moving plate 503 to move along the guide groove 5021 through the connecting plate 506, and at the same time drives the intermediate plate 504 to move, so that the transmission plate 505, the intermediate plate 504, and the moving plate 503 are located at positions with different heights, so as to be able to stir wastewater at different depths and make the neutralization of the wastewater more uniform; the motor II 512 provides power to drive the gear I 5121 to rotate, the gear I 5121 drives the toothed ring 5011 to rotate, the toothed ring 5011 drives the mounting ring 501 to rotate, and the mounting ring 501 drives the mounting plate 502, the intermediate plate 504, and the connecting plate 506 to rotate, so as to stir the wastewater.

[0052] Both ends of the intermediate plate 504 are provided with fixing columns 5041, the inside of the fixing columns 5041 is hollow, the motor V 5042 is fixed inside the fixing columns 5041, and a stirring fan blade 5043 is connected to the output shaft; the motor V 5042 provides power to drive the stirring fan blade 5043 to rotate, and the stirring fan blade 5043 stirs the wastewater.

[0053] A mixing mechanism 508 is provided on the mounting plate 502. The mixing mechanism 508 includes a rotating shaft 5081, a conical cylinder 5082, an arc plate 5083, an inclined plate 5084, a motor VI 5085, a spiral blade 5086, and a shielding plate 5087. The rotating shaft 5081 is rotatably connected to the mounting plate 502 through a bearing. The conical cylinder 5082 is symmetrically installed on the rotating shaft 5081. The arc plate 5083 is evenly connected to the outer side wall of the conical cylinder 5082 with the conical cylinder 5082 as the center. The inclined plate 5084 is fixed to the inner side wall of the larger-diameter end of the conical cylinder 5082 and can stir the wastewater entering the conical cylinder 5082. The spiral blade 5086 is located inside the conical cylinder 5082 and is rotatably connected to the rotating shaft 5081. The shielding plate 5087 is fixed to the end of the arc plate 5083 away from the conical cylinder 5082 and can ensure that the wastewater enters the conical cylinder 5082 along the arc plate 5083. The motor VI 5085 is fixed inside the mounting plate 502, and the output end is connected to the rotating shaft 5081. The motor VI 5085 provides power to drive the rotating shaft 5081 to rotate, and the rotating shaft 5081 drives the conical cylinder 5082 to rotate, thereby stirring the wastewater. At the same time, the arc plate 5083 scrapes the wastewater into the conical cylinder 5082, allowing the wastewater to enter through the larger-diameter end of the conical cylinder 5082 and discharge through the smaller-diameter end, thereby being able to change the flow direction of the wastewater, which can not only accelerate the neutralization rate of the wastewater but also make the neutralization of the wastewater more uniform. The spiral blade can remix the wastewater.

[0054] The separation mechanism 9 includes a separation box 901, a "V"-shaped plate 902, a partition plate 903, a water tank 904, a baffle plate 905, a filter plate 907, a sliding door 908, a support arm 909, a motor VII 910, a gear II 911, and a rack I 912. The separation box 901 is fixed inside the box body 1. A communication hole 9011 is provided on the side wall of the separation box 901, and a number of ventilation openings are provided at the top of the separation box 901. The partition plate 903 is fixed on the inner side wall of the separation box 901, dividing the separation box 901 into two parts. The water tank 904 is fixed on the partition plate 903. A number of water inlets 9041 are provided on the water tank 904. The water inlets 9041 are located above the "V"-shaped plate 902. One end of the water tank 904 is connected to the water outlet pipe 3. A number of the "V"-shaped plates 902 are evenly fixed on the side wall of the water tank 904 and the inner wall of the separation box 901. The baffle plates 905 are fixed at both ends of the water tank 904 close to the communication hole. A pair of filter plates 907 are symmetrically fixed on the inner side wall of the separation box 901, and a sewage discharge groove 9071 is provided between the filter plates 907. A sliding groove is provided on the communication hole 9011 of the separation box 901. The sliding door 908 is movably installed in the sliding groove. The support arm 909 is fixed on the outer side wall of the sliding door 908. The motor VII 910 is fixedly hung at the top of the support arm 909. The gear II 911 is connected to the output shaft of the motor VII 910. The rack I 912 is fixed on the side wall above the communication hole 9011 of the separation box 901. The rack I 912 is meshed with the gear II 911. The motor VII 910 provides power to drive the gear II 911 to rotate, so that the gear II 911 moves along the rack I 912, thereby driving the support arm 909 and the sliding door 908 to move. When the sliding door 908 moves to one side, the communication hole 9011 of the separation box 901 on one side of the partition plate 903 is opened. The wastewater decomposed by anaerobic bacteria enters the separation box 901 on one side of the partition plate 903 through the opened communication hole 9011, flows downward after being blocked by the baffle plate 905, and at the same time, the biogas in the wastewater flows upward, so that the wastewater and the biogas can be quickly separated. Then the wastewater moves upward and passes through the "V"-shaped plate 902 for precipitation, so as to separate the water and the mud. The separated water enters the inside of the water tank 904 through the water inlet 9041, and the sludge precipitates downward and falls on the filter plate 907, and then enters the sewage discharge groove 9071 and is discharged.

[0055] Inside the separation box 901, there is a concentration mechanism 906. The concentration mechanism 906 includes a compression plate 9061, a rotating rod 9062, an adjusting plate 9063, a motor IV 9064, a sprocket 9065, a chain 9066, a fixing plate 9067, and an electric push rod 9068. The fixing plate 9067 is fixed on the outer side wall of the separation box 901. There are a pair of electric push rods 9068, which are respectively fixed on the side wall of the fixing plate 9067 and inside the partition plate 903. There are a pair of adjusting plates 9063, which are respectively connected to the output ends of the corresponding electric push rods 9068. Both ends of the rotating rod 9062 pass through the limiting grooves 9012 and are respectively rotatably connected to the corresponding adjusting plates 9063. The compression plate 9061 is fixed on the rotating rod 9062. Several sprockets 9065 are provided at one end of the rotating rod 9062 close to the adjusting plate 9063, and adjacent sprockets 9065 are meshed and connected by a chain 9066. The motor IV 9064 is fixed on the adjusting plate 9063, and the output end is connected to the rotating rod 9062. The motor IV 9064 provides power to drive the rotating rod 9062 to rotate. The rotating rod 9062 drives the adjacent rotating rods 9062 to rotate through the sprockets 9065 and the chain 9066. The rotating rod 9062 drives the compression plate 9061 to rotate, so as to adjust the angle of the compression plate 9061. When precipitating the wastewater, the compression plate 9061 is adjusted to a certain inclination angle with respect to the filter plate 907. When the wastewater flows upward through the compression plate 9061, the sludge in the wastewater contacts the inclined compression plate 9061 and is blocked, so as to separate the water from the sludge. Then when there is more precipitation on the filter plate 907, the electric push rod 9068 provides power to drive the adjusting plate 9063 to move. The adjusting plate 9063 drives the rotating rod 9062 and the compression plate 9061 to move along the limiting groove 9012, driving the compression plate 9061 parallel to the filter plate 907 to move, so as to concentrate the precipitation on the filter plate 907. After the concentration is completed, the compression plate 9061 is moved to an appropriate position, and then the motor IV 9064 drives the compression plate 9061 to rotate, scraping the precipitation on the filter plate 907 into the sewage discharge groove 9071, and finally discharging it through the sewage discharge pipe.

[0056] The stirring mechanism 8 includes a fixed shaft 801, a rotating sleeve 802, a connecting frame 803, fixed rollers 804, a hollow plate 805, a plug plate 807, a spoiler plate 808, a receiving plate 809, a motor III 810, and a "Z"-shaped rod 811; the receiving plate 809 is fixed on the inner side wall of the box body 1, and the fixed shaft 801 is fixed on the receiving plate 809; the rotating sleeve 802 is located outside the fixed shaft 801, the connecting frame 803 is connected to the rotating sleeve 802, a bevel gear II 8021 is provided at the top of the rotating sleeve 802, a pair of fixed rollers 804 are provided and symmetrically fixed on the fixed shaft 801 up and down, and a spiral groove 8041 is provided on the outer side wall of the fixed roller 804; one end of the "Z"-shaped rod 811 is rotatably connected to the connecting frame 803, and the other end is movably connected in the spiral groove 8041; two groups of hollow plates 805 are provided and are rotatably connected to the corresponding "Z"-shaped rods 811; the plug plate 807 is fixed on the outer side wall of one group of hollow plates 805, and the spoiler plate 808 is connected to the outer side wall of the other group of hollow plates 805; the motor III 810 is fixed on the top of the box body 1, and a bevel gear I 8101 is provided at the output end, and the bevel gear II 8021 and the bevel gear I 8101 are meshed and connected; the motor III 810 provides power to drive the rotating sleeve 802 to rotate through the bevel gear II 8021 and the bevel gear I 8101, the rotating sleeve 802 drives the connecting frame 803 to rotate, the connecting frame 803 drives the hollow plate 805 to rotate, further driving the plug plate 807 and the spoiler plate 808 to rotate; at the same time, it drives the "Z"-shaped rod 811 to rotate, so that one end of the "Z"-shaped rod 811 moves along the spiral groove 8041 on the surface of the fixed roller 804, further causing the other end of the "Z"-shaped rod 811 to swing, and the "Z"-shaped rod 811 drives the hollow plate 805 to swing, thereby realizing the self-rotation of the hollow plate 805.

[0057] A fine-tuning mechanism 806 is provided inside the hollow plate 805. The fine-tuning mechanism 806 includes a waterproof shell 8061, a motor VIII 8062, a gear III 8063, a rack II 8064, a cam 8065, and a grid plate 8066; a number of grid plates 8066 are rotatably connected to the inner wall of the hollow plate 805 through a rotating shaft evenly, the cam 8065 is connected to the rotating shaft at one end of the grid plate 8066, the waterproof shell 8061 is fixed at one end of the hollow plate 805, the motor VIII 8062 is fixed at the top of the hollow plate 805 inside the waterproof shell 8061, the gear III 8063 is connected to the output shaft of the motor VIII 8062, the rack II 8064 is rotatably connected to the end of the cam 8065 away from the grid plate 8066 through a rotating shaft, and the rack II 8064 is meshed with the gear III 8063; the motor VIII 8062 provides power to drive the gear III 8063 to rotate, the gear III 8063 drives the rack II 8064 to move, and the rack II 8064 drives the grid plate 8066 to swing through the cam 8065, so as to be able to stir the anaerobic filler inside the hollow plate 805, at the same time, it can adjust the direction of the wastewater entering the hollow plate 805, thereby changing the flow direction of the wastewater, and can also control the flow rate of the wastewater entering the hollow plate 805.

[0058] Example 2

[0059] The difference compared with Example 1 is as follows:

[0060] 2) The wastewater in the collection tank is introduced into the pH adjustment tank. The pH value of the sewage in the tank is measured by the pH meter in the pH adjustment tank, and the pH value is adjusted to pH4.

[0061] 3) The adjusted wastewater enters the iron-carbon reactor, and iron-carbon micro-electrolysis treatment is carried out on the wastewater in the iron-carbon reactor. The reaction time is 60 minutes, and a gas containing oxygen is introduced into the reactor.

[0062] 4) The wastewater treated by the iron-carbon reactor enters the neutralization device for neutralization, and the pH value of the sewage is adjusted to 8.

[0063] Example 3

[0064] The difference compared with Example 1 is as follows:

[0065] 2) The wastewater in the collection tank is introduced into the pH adjustment tank. The pH value of the sewage in the tank is measured by the pH meter in the pH adjustment tank, and the pH value is adjusted to pH5.

[0066] 3) The adjusted wastewater enters the iron-carbon reactor, and iron-carbon micro-electrolysis treatment is carried out on the wastewater in the iron-carbon reactor. The reaction time is 70 minutes, and a gas containing oxygen is introduced into the reactor.

[0067] 4) The wastewater treated by the iron-carbon reactor enters the neutralization device for neutralization, and the pH value of the sewage is adjusted to 9.

[0068] Through the treatment of wastewater in the above examples, through the detection of the treated wastewater, the discharge limit requirements of water pollutants meeting the national standards are achieved.

[0069] An apparatus for deeply multi-stage treating industrial wastewater works as follows: The filtered wastewater enters the neutralization tank 4 through the water inlet pipe 2, and then a neutralizing agent is introduced into the neutralization tank 4. The wastewater and the neutralizing agent are mixed by the neutralization mechanism 5, which can not only accelerate the neutralization rate of the wastewater but also make the wastewater be neutralized evenly. Then, the neutralized wastewater is pumped to the bottom of the anaerobic tank 6 through the water distribution pipe 7. When the wastewater flows upward through the fixed anaerobic packing, the anaerobic bacteria in the anaerobic packing decompose the organic matter in the wastewater. Then the wastewater continues to flow upward, and the stirring mechanism 8 stirs the wastewater. At the same time, the wastewater comes into contact with the anaerobic packing in the stirring mechanism 8, so as to perform secondary anaerobic treatment on the wastewater, and thus the organic matter in the wastewater can be decomposed sufficiently. Finally, the decomposed wastewater enters the separation mechanism 9, and the separation mechanism 9 separates and discharges the biogas and sludge in the wastewater, while the clean water is discharged through the water outlet pipe 3.

[0070] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar ways to replace them. As long as it does not deviate from the structure of the invention or exceed the scope defined by this claim book, it shall fall within the protection scope of the present invention.

Claims

1. A device for deep multi-stage treatment of industrial wastewater, characterized in that The wastewater treatment process steps of the device are as follows: 1) Collect wastewater through a collection pool; 2) The wastewater in the collection pool is passed into the pH adjustment pool, the pH value of the wastewater in the pool is tested by the pH tester in the pH adjustment pool, and the pH value is adjusted to pH 3-5.5; 3) The conditioned wastewater enters the iron-carbon reactor, where it is treated with iron-carbon micro-electrolysis for a reaction time of 40-95 minutes, and oxygen-containing gas is introduced into the reactor; 4) The wastewater treated by the iron-carbon reactor enters the neutralization device to neutralize the wastewater and adjust the pH value of the wastewater to 7-9; 5) The neutralized wastewater is passed into the anaerobic device for anaerobic treatment, so that the remaining organic matter can be fully decomposed; 6) Sedimentation treatment of anaerobic wastewater in sedimentation tanks; The neutralization device in step 4) includes a box, a water inlet pipe, a neutralization chamber, a neutralization mechanism, and a partition; the partition is fixed inside the box, dividing the box into a neutralization chamber and an anaerobic chamber; the water inlet pipe is located on the side wall of the box and is connected to the neutralization chamber; the neutralization mechanism is installed in the neutralization chamber; The anaerobic device in step 5) comprises an anaerobic bin, a water distribution pipe, a stirring mechanism, a separation mechanism, and a water outlet pipe; the water distribution pipe connects the neutralization bin and the anaerobic bin, and a plurality of branch pipes are arranged on the water distribution pipe; the stirring mechanism is installed in the anaerobic bin, the separation mechanism is installed in the anaerobic bin above the stirring mechanism, and the water outlet pipe is located on the side wall of the box and connected to the anaerobic bin; The neutralization mechanism includes a mounting ring, a mounting plate, a moving plate, an intermediate plate, a transmission plate, a connecting plate, a bidirectional threaded rod, a supporting plate, a motor I, a square plate, and a motor II; the square plate is fixed on the inner wall of the box body, the mounting ring is rotatably connected to the square plate through a bearing, and a gear ring is provided on the outer wall of the mounting ring; the motor II is fixed on the square plate, and a gear I is provided on the output shaft; a pair of mounting plates are provided, which are symmetrically fixed on the inner wall of the mounting ring, and a guide groove is provided on the mounting plate; a pair of supporting plates are provided, both of which are fixed on the side wall of the box body, and a turntable is provided on the top of the supporting plate; a pair of The two ends of the two-way threaded rod are rotatably connected to the turntable of the support plate through bearings; the two ends of the moving plate are movably connected in the corresponding guide grooves, the transmission plate is connected to the two-way threaded rod through threads, and the two ends of the connecting plate are respectively rotatably connected to the moving plate and the transmission plate through bearing shafts; the middle plate is fixed to the connecting plate between the connecting plate and the transmission plate; the motor I is fixed to the turntable on the top of the support plate, and the output end is connected to one end of the two-way threaded rod; fixed columns are provided at both ends of the middle plate, the interior of the fixed column is set to be hollow, the motor V is fixed inside the fixed column, and the output shaft is connected with a stirring fan blade; A mixing mechanism is arranged on the mounting plate, and the mixing mechanism comprises a rotating shaft, a conical cylinder, an arc plate, an inclined plate, a motor VI, a spiral blade and a shield plate; the rotating shaft is rotatably connected to the mounting plate through a bearing, the conical cylinder is symmetrically mounted on the rotating shaft, the arc plate is evenly connected to the outer wall of the conical cylinder with the conical cylinder as the center, and the inclined plate is fixed to the inner wall of the end of the conical cylinder with a larger diameter; the spiral blade is located inside the conical cylinder and is rotatably connected to the rotating shaft; the shield plate is fixed to the end of the arc plate away from the conical cylinder; the motor VI is fixed inside the mounting plate, and the output end is connected to the rotating shaft.

2. The device for deep multi-stage treatment of industrial wastewater according to claim 1, characterized in that The separation mechanism includes a separation box, a "V"-shaped plate, a partition plate, a water tank, a baffle, a filter plate, a sliding door, a support arm, a motor VII, a gear II, and a rack I; the separation box is fixed inside the box body, a connecting hole is provided on the side wall of the separation box, and a plurality of vents are provided on the top of the separation box; the partition plate is fixed on the inner wall of the separation box to divide the separation box into two parts; the water tank is fixed on the partition plate, and a plurality of water inlets are provided on the water tank, and the water inlet is located above the "V"-shaped plate, and one end of the water tank is connected to the water outlet pipe; the "V"-shaped plate is provided with a plurality of Evenly fixed on the side wall of the water tank and the inner wall of the separation box; the baffle is fixed on the two ends of the water tank close to the connecting hole; a pair of filter plates are provided, symmetrically fixed on the inner wall of the separation box, and a sewage trough is provided between the filter plates; a push-pull groove is provided on the connecting hole of the separation box, and the sliding door is movably installed in the push-pull groove, the support arm is fixed on the outer wall of the sliding door, the motor Ⅶ is fixedly hung on the top of the support arm, the gear Ⅱ is connected to the output shaft of the motor Ⅶ, and the rack Ⅰ is fixed on the side wall above the connecting hole of the separation box; the rack Ⅰ is meshed and connected with the gear Ⅱ.

3. A device for deep multi-stage treatment of industrial wastewater according to claim 2, characterized in that A concentrating mechanism is provided inside the separation box, and the concentrating mechanism includes a compression plate, a rotating rod, an adjusting plate, a motor IV, a sprocket, a chain, a fixed plate, and an electric push rod; the fixed plate is fixed on the outer wall of the separation box, a pair of electric push rods are provided, which are respectively fixed on the side wall of the fixed plate and inside the partition plate, a pair of adjusting plates are provided, which are respectively connected to the corresponding output ends of the electric push rods, both ends of the rotating rod pass through the limiting grooves and are respectively rotatably connected to the corresponding adjusting plates, the compression plate is fixed on the rotating rod, and a plurality of sprockets are provided at one end of the rotating rod close to the adjusting plate, and adjacent sprockets are meshed and connected by chains; the motor IV is fixed on the adjusting plate, and the output end is connected to the rotating rod.

4. The device for deep multi-stage treatment of industrial wastewater according to claim 1, characterized in that The stirring mechanism comprises a fixed shaft, a rotating sleeve, a connecting frame, a fixed roller, a hollow plate, a plug plate, a spoiler, a receiving plate and a motor III; the receiving plate is fixed on the inner wall of the box body, and the fixed shaft is fixed on the receiving plate; the rotating sleeve is located outside the fixed shaft, the connecting frame is connected to the rotating sleeve, a bevel gear I is provided on the top of the rotating sleeve, a pair of fixed rollers are provided, which are symmetrically fixed on the fixed shaft up and down, and a spiral groove is provided on the outer wall of the fixed roller; one end of the "Z"-shaped rod is rotatably connected to the connecting frame, and the other end is movably connected in the spiral groove; two groups of hollow plates are provided, both of which are rotatably connected to the corresponding "Z"-shaped rods; the plug plate is fixed on the outer wall of one group of hollow plates, and the spoiler is connected to the outer wall of another group of hollow plates; the motor III is fixed on the top of the box body, and a bevel gear II is provided on the output end, and the bevel gear I and the bevel gear II are meshed and connected.

5. The device for deep multi-stage treatment of industrial wastewater according to claim 4, characterized in that A fine-tuning mechanism is provided inside the hollow plate, and the fine-tuning mechanism includes a waterproof shell, a motor VIII, a gear III, a rack II, a cam, and a grid plate; the grid plate is provided with a number of gears that are evenly connected to the inner wall of the hollow plate through a rotating shaft, the cam is connected to the rotating shaft at one end of the grid plate, the waterproof shell is fixed at one end of the hollow plate, the motor VIII is fixed at the top of the hollow plate inside the waterproof shell, the gear III is connected to the output shaft of the motor VIII, the rack II is connected to the end of the cam away from the grid plate through a rotating shaft, and the rack II is meshed with the gear III.

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