Industrial sewage treatment device

Abstract

The present invention discloses an industrial sewage treatment device, comprising a first box body, a support leg fixedly provided at the bottom of the first box body, and a plurality of disc filter structures equidistantly provided in the first box body. The device is provided with a filter screen leakage detection structure, and the disc filter structure can automatically detect whether the fan-shaped filter screen is damaged and automatically stop the drainage of the drain pipe when the fan-shaped filter screen is damaged through the filter screen leakage detection structure. Moreover, through the setting of the filter screen blockage detection structure, when the fan-shaped filter screen of the disc filter structure is blocked in a large area, the sewage suction pump absorbs the blockage on the fan-shaped filter screen on the disc through the corresponding filter cloth reverse suction cleaning structure, thereby achieving the purpose of automatically cleaning the fan-shaped filter screen. Through the setting of the side fixing structure, the first clamping structure, and the second clamping structure, the fan-shaped filter screen does not need to be punched or glued during the fixing process, and the fixing method is simple and convenient, which is conducive to the disassembly and replacement of the fan-shaped filter screen.

Description

Technical Field

[0001] The invention relates to the technical field of industrial sewage treatment, and in particular to an industrial sewage treatment device. Background Art

[0002] With the improvement of the national requirements for sewage discharge, most of the terminal effluent of sewage treatment plants is required to reach Class A discharge. The rotary disc filter is a new type of equipment integrated with advanced foreign technology in the past two years, and has great market potential. In the treatment of industrial mining wastewater, disc filters are widely used, mainly used to filter out ore particles in sewage. Most of the suspended particles in sewage are inorganic particles, and it is difficult to clean the surface of the disc filter.

[0003] The fiber disc filter is a sewage deep filtration device that is widely used in the field of sewage deep treatment and reclaimed water reuse. It belongs to the category of microporous filtration technology. The fiber disc filter consists of a central tube and filter discs distributed on the central tube. It is used in the field of sewage deep treatment. The suspended solids (SS) of the inlet water can reach 80mg / L, and the SS of the outlet water can be as low as 5mg / L. The working process of the fiber disc filter is as follows: the water before filtration enters the filter, and is filtered from the outside to the inside through the filter cloth on each filter disc under the action of the water level difference. The filtered water flows out from the central tube of the fiber disc, and the debris is trapped on the filter cloth surface of the filter disc.

[0004] Considering that the filter disc is fully or partially immersed in sewage, the cleaning method of the filter disc is generally to clean the filter cloth of the filter disc by back suction below the sewage level. When cleaning is required, the backwash water pump is turned on, the filter disc rotates, the suction cup absorbs water outward, and the clean water flows from the fiber turntable to the outside to clean the debris trapped on the surface of the fiber filter cloth of the filter disc, and the cleaning wastewater is discharged through the water pump. However, there are two main types of disc filters currently used in the market: 1. Made together with the frame and fixed with rivets. 2. Bonded with special glue.

[0005] Both methods have defects: The first method: using rivets to rivet will make holes in the filter. Although the holes are glued with glue, the glue will melt when the equipment is cleaned with acid, so the holes in the filter will crack. The second method: glue the filter directly and then install it into the assembly frame. The edges around the glued filter are actually still exposed to the glue bonding area. This method actually has the same defects as the first method. Although the glue is very strong, the glued area is still exposed to the outside. It is still afraid of acid and will decompose when it encounters acid, thus degumming and falling apart. In addition, when the filter cloth of the filter disc is cleaned by reverse suction, the disc will fit the suction cover and rotate. At this time, the rivet caps or glue that fix the filter will bulge on the disc. When the suction cover touches these bulges, it is easy to displace, which hinders the reverse suction effect. Moreover, the multiple discs of the existing fiber rotary filter are fixed on the same central tube. When cleaning by reverse suction, all the discs rotate at the same time for cleaning, including discs that are not seriously blocked, which easily leads to excessive cleaning and damage of the disc filter screen. Moreover, since the multiple discs of the existing fiber rotary filter are fixed on the same central tube, when the filter screen of one disc is damaged, the entire fiber rotary filter needs to be stopped for maintenance, and there is no warning structure for detecting damage when the filter screen of the disc is damaged. Once the damage of a certain filter screen is not discovered in time, it will cause pollution of the entire post-filtration reservoir.

[0006] Based on the above, the present invention designs an industrial wastewater treatment device to solve the above problems. Summary of the invention

[0007] In order to solve the above-mentioned problems, the present invention provides an industrial sewage treatment device.

[0008] The present invention is achieved through the following technical solutions:

[0009] An industrial sewage treatment device comprises a first box body, a support leg is fixedly provided at the bottom of the first box body, a plurality of disc filter structures are equidistantly provided in the first box body, the disc filter structure comprises a disc, the inside of the disc is hollow, a central tube is fixedly provided through the axis of the disc, the inner cavity of the disc is connected with the central tube, a through hole connected with the inner cavity of the disc is provided on the central tube, a plurality of fan-shaped mounting grooves are provided on both sides of the disc, a fan-shaped filter screen is fixedly installed in each of the fan-shaped mounting grooves, the straight edges on both sides of the fan-shaped filter screen are respectively fixed to the straight edges on both sides of the fan-shaped mounting groove by side fixing structures, the large-diameter arc edge of the fan-shaped filter screen is fixed at the large-diameter arc edge of the fan-shaped mounting groove by a first clamping structure, and the small-diameter fan-shaped filter screen is fixed to the large-diameter arc edge of the fan-shaped mounting groove by a first clamping structure. The arcuate edge of the diameter is fixed to the arcuate edge of the small diameter of the fan-shaped mounting groove by a second clamping structure, the arcuate edge of the large diameter of the fan-shaped mounting groove is provided with a first arcuate groove for embedding the arcuate edge of the large diameter of the fan-shaped filter screen, the arcuate edge of the small diameter of the fan-shaped mounting groove is provided with a second arcuate groove for embedding the arcuate edge of the small diameter of the fan-shaped filter screen, the surface of the fan-shaped filter screen is flush with the surface of the disc, the first mounting ring for installing the first clamping structure is fixed on both sides of the disc, and the second mounting ring for installing the second clamping structure is fixed on both sides of the disc, the side fixing structure is arranged on the side straight edge of the fan-shaped mounting groove, the side fixing structure includes a first arcuate rotating block, and the side straight edge of the fan-shaped mounting groove is provided with an arcuate mounting block for rotating the first arcuate rotating block. The first arc rotating block is rotatably arranged in the arc mounting groove, a rotating shaft is fixedly provided at the axis center of the first arc rotating block, two ends of the rotating shaft are rotatably connected with the arc mounting groove through bearings respectively, and a rotating handle is fixedly provided at one end of the rotating shaft through the disc, and the rotating handle is fixedly connected with the disc through bolts, a second arc rotating block is hingedly connected to one side of the first arc rotating block, the second arc rotating block is rotatably arranged in the arc mounting groove, the side straight edge of the fan-shaped filter is clamped between the second arc rotating block and the first arc rotating block, the axis center line of the second arc rotating block is consistent with the axis center line of the first arc rotating block, one side end face of the second arc rotating block is flush with the surface of the disc, and an arc positioning block is fixedly provided on the outer side of the second arc rotating block, The inner wall of the arc-shaped mounting groove is provided with an arc-shaped sliding groove for the arc-shaped positioning block to be embedded, the axis center line of the arc-shaped positioning block is consistent with the axis center line of the first arc-shaped rotating block, and one side end face of the arc-shaped positioning block is flush with the surface of the disk, the first clamping structure includes a first arc-shaped plate, the first arc-shaped plate is arranged in the first mounting ring, a first threaded rod is rotatably connected to the center of the outer arc surface of the first arc-shaped plate through a bearing, the side end of the first threaded rod penetrates the first mounting ring and is fixed with a first handle, the first threaded rod is threadedly connected with the first mounting ring at a contact point, two first guide rods are symmetrically fixed on the outer arc surface of the first arc-shaped plate, the two first guide rods are arranged parallel to the first threaded rod, the first guide rod penetrates the first mounting ring and is slidably connected with the contact point therewith,Two second guide rods are symmetrically provided through the center of the side surface of the first arc plate, and the second guide rods are slidably connected with the first arc plate at the contact point. The two second guide rods are fixed with the same first arc clamping plate at one end facing the disc, and a second threaded rod is rotatably connected with the center of the side wall of the first arc clamping plate through a bearing, and the side end of the second threaded rod penetrates the first arc plate and is fixed with a second handle, and the second threaded rod is threadedly connected with the first arc plate, and the first arc clamping plate squeezes and fixes the large-diameter arc side of the fan-shaped filter in the first arc groove, and the second clamping structure includes a second arc plate, and the second arc plate is arranged on the outside of the second mounting ring, and the inner arc surface of the second arc plate A third threaded rod is rotatably connected at the center through a bearing, and a side end of the third threaded rod penetrates the second mounting ring and is fixed with a third handle, and the third threaded rod is threadedly connected at the contact point with the second mounting ring, and two third guide rods are symmetrically fixed on the inner arc surface of the second arc plate, and the two third guide rods are arranged parallel to the third threaded rod, and the third guide rod penetrates the second mounting ring and is slidably connected with the contact point therewith, and two fourth guide rods are symmetrically penetrated at the center of the side surface of the second arc plate, and the fourth guide rod is slidably connected with the contact point of the second arc plate, and the two fourth guide rods are fixed with the same second arc clamping plate at one end facing the disk, and the center of the side wall of the second arc clamping plate is rotatably connected by a bearing A fourth threaded rod is swivel-connected, and a side end of the fourth threaded rod penetrates the second arc plate and is fixed with a fourth handle. The fourth threaded rod is threadedly connected to the second arc plate. The second arc plate squeezes and fixes the small-diameter arc edge of the fan-shaped filter in the second arc groove. Cover plates are fixed on both ends of the center tube, and a first pulley is fixed on one of the cover plates. The axis center line of the first pulley is consistent with the axis center line of the center tube. A mounting plate is provided at the upper end of the first pulley, and a motor is fixedly mounted on the top surface of the mounting plate. A second pulley is fixedly mounted on the output shaft of the motor. The second pulley is connected to the first pulley through a belt transmission. The bottom end of the mounting plate is connected to the top end of the first box body A circular cover is provided on the other cover plate, the circular cover is connected with the central tube, the circular cover is sealed and rotatably connected with the cover plate at the contact point, two cylinders are symmetrically sleeved on the central tube, the central tube is rotatably connected with the cylinders, the bottom end of the cylinder is fixedly connected with the bottom end of the first box body through a plurality of support rods, the circular cover is fixedly connected with one of the support rods through a connecting block, the bottom end of the circular cover is fixedly connected with a drain pipe, the drain pipe and the other end penetrate the first box body and extend out of the first box body, the drain pipe is fixedly connected with the contact point of the first box body, the drain pipe is fixedly provided with a first electric valve, and the first electric valve is arranged outside the first box body.

[0010] Preferably, a filter leak detection structure is provided at the directly lower end of each drain pipe extending out of the first box port, and the filter leak detection structure includes a second box, a support leg is fixedly provided at the bottom of the second box, a filter plate is slidably provided in the second box, the outer edge of the filter plate is sealingly and slidably connected to the inner wall of the second box, a fifth guide rod is fixed at the four corners of the top surface of the filter plate, a first pressing plate is fixed at the top of the fifth guide rod, a guide cylinder is slidably sleeved on the fifth guide rod, the guide cylinder is fixedly installed on the top of the second box, a spring is fixedly provided between the bottom end of the first pressing plate and the top surface of the guide cylinder, and the spring is sleeved on the fifth guide rod, a first control switch is provided at the directly lower end of the first pressing plate, and the first control switch is electrically connected to the first electric valve on the drain pipe directly above it through a wire, and a rectangular drain pipe is fixed at the bottom of the side wall of the second box, and the rectangular drain pipe is connected to the second box.

[0011] Preferably, a filter screen blockage detection structure is provided at the directly lower end of each of the rectangular drain pipes, and the filter screen blockage detection structure includes a third box body, a capillary tube is fixed to the bottom of the side wall of the third box body, the capillary tube is connected to the third box body, the diameter of the drain pipe is 2-4 times the diameter of the capillary tube, a rectangular overflow pipe is fixed on the side wall of the third box body, the rectangular overflow pipe is connected to the third box body, the rectangular overflow pipe is arranged at the upper end of the capillary tube, a horizontal plate is fixed to the top surface of the third box body, a sliding rod is vertically penetrated through the horizontal plate, the sliding rod is slidably connected with the contact point of the horizontal plate, the bottom end of the sliding rod extends into the third box body and is fixed with a floating plate, a second pressing plate is fixed to the top of the sliding rod, a second control switch is provided at the directly lower end of the second pressing plate, the second control switch is fixedly mounted on the horizontal plate, and the second control switch is electrically connected to a motor at the directly upper end thereof through a wire.

[0012] Preferably, each of the discs is provided with a filter cloth reverse suction cleaning structure, the reverse suction cleaning structure comprises a U-shaped connecting pipe, both ends of the U-shaped connecting pipe are respectively fixedly connected with a suction cover shell, the two suction cover shell openings are arranged opposite to each other, and the two suction cover shells are respectively fitted with both sides of the disc, the suction cover shell is arranged between the first mounting ring and the second mounting ring, the U-shaped connecting pipe is communicated with the suction cover shell, the U-shaped connecting pipe penetrates the first box body and is fixedly connected with the contact part thereof, the bottom end of the U-shaped connecting pipe is fixed with a first connecting pipe, the first connecting pipe is communicated with the U-shaped connecting pipe, the first connecting pipe is arranged outside the first box body, a second electric valve is fixedly provided on the first connecting pipe, the second electric valve is electrically connected to a second control switch corresponding to its side end through a wire, the bottom ends of the first connecting pipes of all the filter cloth reverse suction cleaning structures are fixedly connected with the same second connecting pipe, the second connecting pipe is communicated with the first connecting pipe, the second connecting pipe port is communicated with a suction pump, the suction pump is fixedly installed on the side wall of the first box body, and the suction pump is electrically connected to each second control switch through a wire.

[0013] Preferably, the motor, the first electric valve, the second electric valve and the sewage suction pump are electrically connected to an external power supply via wires, respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The device is provided with a filter screen leakage detection structure. The disc filter structure can automatically detect whether the sector filter screen is damaged and automatically stop the drainage of the drain pipe when the sector filter screen is damaged through the filter screen leakage detection structure. Moreover, through the setting of the filter screen blockage detection structure, when the sector filter screen of the disc filter structure is blocked over a large area, the sewage suction pump absorbs the blockage on the sector filter screen on the disc through the corresponding filter cloth reverse suction cleaning structure, thereby achieving the purpose of automatically cleaning the sector filter screen. Through the setting of the side fixing structure, the first clamping structure and the second clamping structure, the sector filter screen does not need to be punched or glued during fixing, and the fixing method is simple and convenient. It is conducive to the disassembly and replacement of the fan-shaped filter. Since the disk drainage of the device is separately arranged, the filter leakage detection structure and the filter blockage detection structure can detect the disk one-to-one. Therefore, when cleaning the fan-shaped filter, it is only necessary to clean the disk blocked by the fan-shaped filter separately, thereby effectively avoiding excessive cleaning and causing damage to the fan-shaped filter. Moreover, when the fan-shaped filter on a certain disk is damaged, the filter leakage detection structure automatically stops the disk filtering structure in a targeted manner, and the maintenance personnel can perform maintenance work on the stopped disk. In this way, other disk filtering structures can still continue to filter sewage, so there is no need to stop the machine, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural diagram of the structure of the present invention;

[0017] Figure 2 The structure of the present invention is a three-dimensional Figure 1 ;

[0018] Figure 3 The structure of the present invention Figure 1 Schematic diagram of the middle disc filter structure 2;

[0019] Figure 4 The structure of the present invention Figure 3 Rear view of

[0020] Figure 5 The structure of the present invention Figure 3 Middle A is a partial enlarged view;

[0021] Figure 6 The structure of the present invention Figure 3 A schematic diagram of the operation when the fan-shaped filter screen 6 on the middle plate 3 is replaced;

[0022] Figure 7 The structure of the present invention Figure 3 The middle part of the structure is sectional view;

[0023] Figure 8 The structure of the present invention Figure 7 Schematic diagram of the working of the middle and side fixing structure 7.

[0024] In the figure: first housing 1, disc filter structure 2, disc 3, central tube 4, fan-shaped mounting groove 5, fan-shaped filter screen 6, side fixing structure 7, first clamping structure 8, second clamping structure 9, first arc groove 10, second arc groove 11, first mounting ring 12, second mounting ring 13, first arc rotating block 14, arc mounting groove 15, rotating shaft 16, rotating handle 17, second arc rotating block 18, arc positioning block 19, arc chute 20, first arc plate 21, first threaded rod 22, first handle 23, first guide rod 24, second guide rod 25, first arc clamping plate 26, second threaded rod 27, second handle 28, second arc plate 29, third threaded rod 30, third handle 31, third guide rod 32, fourth guide rod 33, second arc clamping plate 34, fourth thread Rod 35, fourth handle 36, cover plate 37, first pulley 38, mounting plate 39, motor 40, second pulley 41, circular cover 42, cylinder 43, support rod 44, connecting block 45, drain pipe 46, first electric valve 47, filter screen leakage detection structure 48, second box body 49, filter plate 50, fifth guide rod 51, first pressing plate 52, spring 53, first control switch 54, rectangular drain pipe 55, filter screen blockage detection structure 56, third box body 57, capillary 58, rectangular overflow pipe 59, cross plate 60, slide rod 61, float 62, second pressing plate 63, second control switch 64, filter cloth reverse suction cleaning structure 65, U-shaped connecting pipe 66, sewage suction cover shell 67, second electric valve 68, second connecting pipe 69, sewage suction pump 70, guide cylinder 71, first connecting pipe 72. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, an industrial sewage treatment device comprises a first box body 1, a support leg is fixedly provided at the bottom of the first box body 1, a plurality of disc filter structures 2 are equidistantly provided in the first box body 1, the disc filter structure 2 comprises a disc 3, the inside of the disc 3 is hollow, a center tube 4 is fixedly penetrated at the axis of the disc 3, the inner cavity of the disc 3 is connected with the center tube 4, a through hole connected with the inner cavity of the disc 3 is provided on the center tube 4, a plurality of fan-shaped mounting grooves 5 are provided on both sides of the disc 3, a fan-shaped filter screen 6 is fixedly installed in each of the fan-shaped mounting grooves 5, the straight edges on both sides of the fan-shaped filter screen 6 are respectively fixed to the straight edges on both sides of the fan-shaped mounting groove 5 by side fixing structures 7, and the large-diameter arc edge of the fan-shaped filter screen 6 is fixed to the first clamping structure 8. At the large diameter arc edge of the fan-shaped mounting groove 5, the small diameter arc edge of the fan-shaped filter screen 6 is fixed at the small diameter arc edge of the fan-shaped mounting groove 5 through the second clamping structure 9, the large diameter arc edge of the fan-shaped mounting groove 5 is provided with a first arc groove 10 for embedding the large diameter arc edge of the fan-shaped filter screen 6, and the small diameter arc edge of the fan-shaped mounting groove 5 is provided with a second arc groove 11 for embedding the small diameter arc edge of the fan-shaped filter screen 6, the surface of the fan-shaped filter screen 6 is flush with the surface of the disc 3, the first mounting ring 12 for installing the first clamping structure 8 is fixed on both sides of the disc 3, and the second mounting ring 13 for installing the second clamping structure 9 is fixed on both sides of the disc 3, the side fixing structure 7 is arranged on the side straight edge of the fan-shaped mounting groove 5, and the side The fixing structure 7 includes a first arc-shaped rotating block 14, and an arc-shaped mounting groove 15 for the first arc-shaped rotating block 14 to rotate is provided on the side straight edge of the fan-shaped mounting groove 5. The first arc-shaped rotating block 14 is rotatably arranged in the arc-shaped mounting groove 15. A rotating shaft 16 is fixedly penetrated at the axis of the first arc-shaped rotating block 14, and both ends of the rotating shaft 16 are rotatably connected to the arc-shaped mounting groove 15 through bearings, and a rotating handle 17 is fixedly provided at one end of the rotating shaft 16 penetrating the disk 3, and the rotating handle 17 is fixedly connected to the disk 3 through bolts. A second arc-shaped rotating block 18 is hinged on one side of the first arc-shaped rotating block 14, and the second arc-shaped rotating block 18 is rotatably arranged in the arc-shaped mounting groove 15. The second arc-shaped rotating block 18 and the first arc-shaped rotating block 14 are connected. The side straight edge of the sector filter 6 is clamped in the space, the axis line of the second arc rotating block 18 is consistent with the axis line of the first arc rotating block 14, and one side end face of the second arc rotating block 18 is flush with the surface of the disc 3. An arc positioning block 19 is fixed on the outside of the second arc rotating block 18. An arc sliding groove 20 for the arc positioning block 19 to be embedded is provided on the inner wall of the arc mounting groove 15. The axis line of the arc positioning block 19 is consistent with the axis line of the first arc rotating block 14, and one side end face of the arc positioning block 19 is flush with the surface of the disc 3. The first clamping structure 8 includes a first arc plate 21, which is arranged in the first mounting ring 12. The center of the outer arc surface of the first arc plate 21 is rotatably connected with a first threaded rod 22 through a bearing.The side end of the first threaded rod 22 penetrates the first mounting ring 12 and is fixed with a first handle 23. The first threaded rod 22 is threadedly connected with the first mounting ring 12 at the contact point. Two first guide rods 24 are symmetrically fixed on the outer arc surface of the first arc plate 21. The two first guide rods 24 are arranged in parallel with the first threaded rod 22. The first guide rod 24 penetrates the first mounting ring 12 and is slidably connected with the contact point therewith. Two second guide rods 25 are symmetrically penetrated at the center of the side of the first arc plate 21. The second guide rods 25 are slidably connected with the contact point of the first arc plate 21. The two second guide rods 25 are fixed with the same first arc clamping plate 26 facing one end of the disk 3. The center of the side wall of the first arc clamping plate 26 is rotated by a bearing A second threaded rod 27 is rotatably connected, and the side end of the second threaded rod 27 penetrates the first arc plate 21 and is fixed with a second handle 28. The second threaded rod 27 is threadedly connected to the first arc plate 21. The first arc clamping plate 26 squeezes and fixes the large-diameter arc edge of the fan-shaped filter 6 in the first arc groove 10. The second clamping structure 9 includes a second arc plate 29, and the second arc plate 29 is arranged on the outside of the second mounting ring 13. The center of the inner arc surface of the second arc plate 29 is rotatably connected with a third threaded rod 30 through a bearing. The side end of the third threaded rod 30 penetrates the second mounting ring 13 and is fixed with a third handle 31. The third threaded rod 30 is threadedly connected to the second mounting ring 13 at the contact point. The inner arc of the second arc plate 29 Two third guide rods 32 are symmetrically fixed on the surface, and the two third guide rods 32 are arranged parallel to the third threaded rod 30. The third guide rod 32 penetrates the second mounting ring 13 and is slidably connected with the contact therewith. Two fourth guide rods 33 are symmetrically penetrated at the center of the side of the second arc plate 29, and the fourth guide rod 33 is slidably connected with the contact of the second arc plate 29. The two fourth guide rods 33 are fixed with the same second arc clamping plate 34 facing one end of the disk 3. The center of the side wall of the second arc clamping plate 34 is rotatably connected with a fourth threaded rod 35 through a bearing. The side end of the fourth threaded rod 35 penetrates the second arc plate 29 and is fixed with a fourth handle 36. The fourth threaded rod 35 is threadedly connected with the second arc plate 29. The second arc plate 29 squeezes and fixes the small diameter arc edge of the sector filter 6 in the second arc groove 11, and cover plates 37 are fixed at both ends of the center tube 4, one of the cover plates 37 is fixed with a first pulley 38, the axis of the first pulley 38 is consistent with the axis of the center tube 4, and a mounting plate 39 is provided at the upper end of the first pulley 38, a motor 40 is fixedly installed on the top surface of the mounting plate 39, and a second pulley 41 is fixedly installed on the output shaft of the motor 40, and the second pulley 41 is connected to the first pulley 38 through a belt. The bottom end of the mounting plate 39 is fixedly connected to the top of the first box body 1, and a circular cover body 42 is penetrated through the other cover plate 37, and the circular cover body 42 is communicated with the center tube 4.The circular cover 42 is sealed and rotatably connected with the cover plate 37 at the contact point. Two cylinders 43 are symmetrically sleeved on the central tube 4. The central tube 4 is rotatably connected with the cylinder 43. The bottom end of the cylinder 43 is fixedly connected with the bottom end of the first box body 1 through a plurality of support rods 44. The circular cover 42 is fixedly connected with one of the support rods 44 through a connecting block 45. A drain pipe 46 is fixedly connected with the bottom end of the circular cover 42. The drain pipe 46 and the other end penetrate the first box body 1 and extend out of the first box body 1. The drain pipe 46 is fixedly connected with the contact point of the first box body 1. A first electric valve 47 is fixedly provided on the drain pipe 46. The first electric valve 47 is arranged outside the first box body 1.

[0027] Each drain pipe 46 extending out of the first box 1 port is provided with a filter screen leak detection structure 48 at the lower end thereof, the filter screen leak detection structure 48 comprises a second box 49, a support leg is fixedly provided at the bottom of the second box 49, a filter plate 50 is slidably provided in the second box 49, the outer edge of the filter plate 50 is sealed and slidably connected with the inner wall of the second box 49, a fifth guide rod 51 is fixed at the four corners of the top surface of the filter plate 50, a first pressing plate 52 is fixed at the top of the fifth guide rod 51, and a guide cylinder is slidably sleeved on the fifth guide rod 51 71, the guide cylinder 71 is fixedly installed on the top of the second box body 49, a spring 53 is fixedly provided between the bottom end of the first pressing plate 52 and the top surface of the guide cylinder 71, the spring 53 is sleeved on the fifth guide rod 51, a first control switch 54 is provided at the lower end of the first pressing plate 52, the first control switch 54 is electrically connected to the first electric valve 47 on the drain pipe 46 at the upper end thereof through a wire, a rectangular drain pipe 55 is fixed to the bottom of the side wall of the second box body 49, the rectangular drain pipe 55 is connected to the second box body 49.

[0028] A filter screen blocking structure 56 is provided at the lower end of each rectangular drain pipe 55. The filter screen blocking structure 56 includes a third box body 57. A thin tube 58 is fixed to the bottom of the side wall of the third box body 57. The thin tube 58 is connected to the third box body 57. The diameter of the drain pipe 46 is 2-4 times the diameter of the thin tube 58. A rectangular overflow pipe 59 is fixed to the side wall of the third box body 57. The rectangular overflow pipe 59 is connected to the third box body 57. The rectangular overflow pipe 59 is arranged at the upper end of the thin tube 58. A horizontal plate 60 is fixed to the top surface of the third box body 57, and a sliding rod 61 is vertically penetrated on the horizontal plate 60. The sliding rod 61 is slidably connected to the horizontal plate 60 at the contact point. The bottom end of the sliding rod 61 extends into the third box body 57 and is fixed with a floating plate 62. A second pressing plate 63 is fixed to the top of the sliding rod 61. A second control switch 64 is provided at the lower end of the second pressing plate 63. The second control switch 64 is fixedly installed on the horizontal plate 60, and the second control switch 64 is electrically connected to a motor 40 at the upper end thereof through a wire.

[0029] Each of the discs 3 is provided with a filter cloth back-suction cleaning structure 65, and the back-suction cleaning structure 65 includes a U-shaped connecting pipe 66, and the two ends of the U-shaped connecting pipe 66 are respectively fixedly connected with a suction cover shell 67, and the two suction cover shells 67 are arranged with openings opposite to each other, and the two suction cover shells 67 are respectively fitted with the two sides of the disc 3, and the suction cover shell 67 is arranged between the first mounting ring 12 and the second mounting ring 13, and the U-shaped connecting pipe 66 is connected to the suction cover shell 67, and the U-shaped connecting pipe 66 penetrates the first box body 1 and is fixedly connected with the contact part thereof, and the bottom end of the U-shaped connecting pipe 66 is fixed with a first connecting pipe 72, and the first connecting pipe 72 is connected to the U-shaped The connecting pipe 66 is connected, the first connecting pipe 72 is arranged on the outside of the first box body 1, and a second electric valve 68 is fixedly provided on the first connecting pipe 72. The second electric valve 68 is electrically connected to a second control switch 64 corresponding to its side end through a wire. The bottom ends of the first connecting pipes 72 of all the filter cloth back-suction cleaning structures 65 are fixedly connected to the same second connecting pipe 69, and the second connecting pipe 69 is connected to the first connecting pipe 72. The port of the second connecting pipe 69 is connected to the sewage suction pump 70, and the sewage suction pump 70 is fixedly installed on the side wall of the first box body 1, and the sewage suction pump 70 is electrically connected to each second control switch 64 through a wire.

[0030] The motor 40 , the first electric valve 47 , the second electric valve 68 and the sewage suction pump 70 are electrically connected to an external power source through wires, respectively.

[0031] Working principle: When the present invention is used, sewage is transported into the first box body 1 through an external water pump. At this time, the disc filter structure 2 in the first box body 1 is immersed in the sewage. At this time, the sewage is filtered by the fan-shaped filter screen 6 on the disc 3, and the filtered clean water enters the central tube 4 through the hollow area inside the disc 3. The clean water after entering the central tube 4 is discharged into the filter screen leakage detection structure 48 through the drain pipe 46. At this time, the filtered clean water enters the second box body 49. The clean water entering the second box body 49 flows into the filter screen blockage detection structure 56 through the rectangular drain pipe 55. At this time, the filtered clean water enters the third box body 57. The clean water entering the third box body 57 is discharged into the filtered water storage tank through the capillary 58 and the rectangular overflow pipe 59, thereby completing the sewage filtration process. Since the diameter of the capillary 58 is much thinner than that of the drain pipe 46 , its drainage volume is not as fast as that of the drain pipe 46 , so the water level in the third box 57 will slowly rise. When the water level rises to the position of the rectangular overflow pipe 59 , it will overflow through the rectangular overflow pipe 59 . At this time, the float 62 floats on the water surface along with the water level in the third box 57 .

[0032] If the fan-shaped filter 6 on the disc 3 is damaged, the unpurified sewage directly flows into the second box 49 of the filter leakage detection structure 48. At this time, the particulate matter in the sewage is blocked on the filter plate 50, so that the sewage can enter the next discharge step only after being filtered by the filter plate 50. In this process, the filter plate 50 plays a second protective role to prevent the sewage from polluting the entire post-filtration reservoir. Moreover, as the number of particles intercepted on the filter plate 50 increases, the weight of the filter plate 50 also increases. In this way, the filter plate 50 squeezes the spring 53 through the first pressing plate 52 and descends. At this time, the first pressing plate 52 presses the first control switch 54. When the first control switch 54 is pressed, the first electric valve 47 on the corresponding drain pipe 46 is closed, so that the disc filter structure 2 with the damaged fan-shaped filter 6 stops draining, and the disc filter structure 2 can automatically detect whether the fan-shaped filter 6 is damaged and automatically stop draining the drain pipe 46 when the fan-shaped filter 6 is damaged through the filter leakage detection structure 48.

[0033] If the fan-shaped filter screen 6 on the disc 3 is blocked over a large area, the drainage volume of the drain pipe 46 is reduced. When the fan-shaped filter screen 6 is blocked over a large area and the drainage volume of the drain pipe 46 is lower than the drainage volume of the capillary 58, the water level in the third box 57 drops, and the water in the third box 57 no longer overflows from the rectangular overflow pipe 59. The floating plate 62 drops synchronously with the drop in water level. In this way, as the water level drops, the second pressing plate 63 drops synchronously with the floating plate 62 and presses the second control switch 64. When the second control switch 64 is pressed, the corresponding motor 40 runs and the corresponding second electric motor 40 is pressed. The movable valve 68 is opened, and the sewage suction pump 70 is running at the same time. When the motor 40 is running, the first pulley 38 is driven by the second pulley 41, and the first pulley 38 synchronously drives the disc 3 to rotate slowly through the central tube 4. At the same time, the sewage suction pump 70 absorbs the blockage on the fan-shaped filter screen 6 on the disc 3 through the corresponding filter cloth reverse suction cleaning structure 65. During the rotation of the disc 3, when the fan-shaped filter screen 6 rotates to the sewage suction cover 67, the blockage on the fan-shaped filter screen 6 is sucked away by the suction force generated by the sewage suction pump 70 in the sewage suction cover 67, thereby achieving the purpose of cleaning the fan-shaped filter screen 6.

[0034] The sector filter 6 is fixed in the sector mounting groove 5 by means of the side fixing structure 7, the first clamping structure 8 and the second clamping structure 9. After the sector filter 6 is fixed, its surface is flush with the surface of the disc 3, and the surface of the side fixing structure 7 after fixing the sector filter 6 is also flush with the surface of the disc 3. Therefore, in the process of cleaning the blockage on the sector filter 6 by the filter cloth reverse suction cleaning structure 65, there is no stuck protrusion between the dirt suction cover 67 and the disc 3, which is conducive to the cleaning of the sector filter 6. When replacing the sector filter 6, firstly, the second threaded rod 27 is rotated by the second handle 28 to make the first arc clamping plate 26 rise. At this time, the first arc clamping plate 26 no longer squeezes the large diameter arc edge of the sector filter 6. Then, the first threaded rod 22 is rotated by the first handle 23, so that the first arc plate 21 synchronously drives the first arc clamping plate 26 to move toward the inner arc surface direction of the first mounting ring 12. Similarly, the fourth threaded rod 35 is rotated by the fourth handle 36 to make the second arc clamping plate 34 rise and no longer squeeze the small diameter arc edge of the sector filter 6. Then, the third threaded rod 30 is rotated by the third handle 31, so that the second arc plate 29 synchronously drives the second arc clamping plate 34 to move toward the outer arc surface direction of the second mounting ring 13. Then, the bolts fixing the rotating handle 17 and the disc 3 are removed, and the rotating shaft 16 is rotated by the handle 17 (such as Figure 8As shown in the figure, when the rotating shaft 16 rotates, the first arc rotating block 14 is synchronously driven to rotate. When the first arc rotating block 14 rotates, the second arc rotating block 18 is synchronously driven to rotate in the arc mounting groove 15. When the rotating shaft 16 rotates at an angle of 90°, the side of the fan-shaped filter screen 6 clamped between the first arc rotating block 14 and the second arc rotating block 18 bent at 90° is straightened. At this time, the second arc rotating block 18 is rotated to loosen the side of the fan-shaped filter screen 6 clamped between the first arc rotating block 14 and the second arc rotating block 18. At this time, the fan-shaped filter screen 6 can be removed. When reinstalling a new fan-shaped filter screen 6, the fan-shaped filter screen 6 is removed. The small-diameter arc edge and the large-diameter arc edge of the fan-shaped filter screen 6 are respectively placed in the second arc groove 11 and the first arc groove 10, and the straight edges on both sides of the fan-shaped filter screen 6 are respectively placed on the two first arc rotating blocks 14, and then the second arc rotating block 18 is rotated to press the straight edges of the fan-shaped filter screen 6, and then the first arc rotating block 14 is rotated by rotating the handle 17, and the side of the fan-shaped filter screen 6 clamped between the first arc rotating block 14 and the second arc rotating block 18 is folded into 90 degrees at the same time and rolled into the arc installation groove 15. Due to the limitation of the arc installation groove 15, the first arc rotating block 14 and the second arc rotating block 18 are 8 will clamp the side of the sector filter 6 more firmly, then the rotating handle 17 and the disc 3 are fixed again by bolts, thereby completing the fixation of the two sides of the sector filter 6, and then the first threaded rod 22 is rotated by the first handle 23, so that the first arc plate 21 synchronously drives the first arc clamping plate 26 to move toward the large diameter arc side of the sector filter 6, and then the second threaded rod 27 is rotated by the second handle 28 to make the first arc clamping plate 26 descend, and then the large diameter arc side of the sector filter 6 is clamped and fixed in the first arc groove 10 by the first arc clamping plate 26. Similarly, the third handle 28 is used to rotate the first threaded rod 27 to rotate the second threaded rod 27 to make the first arc clamping plate 26 descend, and then the large diameter arc side of the sector filter 6 is clamped and fixed in the first arc groove 10. The hand 31 rotates the third threaded rod 30, so that the second arc plate 29 synchronously drives the second arc clamping plate 34 to move toward the small diameter arc side of the fan-shaped filter 6, and then the fourth threaded rod 35 is rotated by the fourth handle 36 to lower the second arc clamping plate 34, and then the small diameter arc side of the fan-shaped filter 6 is clamped and fixed in the second arc groove 11 by the second arc clamping plate 34. Through the setting of the side fixing structure 7, the first clamping structure 8, and the second clamping structure 9, the fan-shaped filter 6 does not need to be punched or glued during the fixing process, and the fixing method is simple and convenient, which is conducive to the disassembly and replacement of the fan-shaped filter 6.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An industrial wastewater treatment device, comprising a first box body (1), wherein the bottom of the first box body (1) is fixedly provided with supporting legs, characterized in that; A plurality of disc filter structures (2) are equidistantly arranged in the first housing (1), the disc filter structure (2) comprising a disc (3), the interior of the disc (3) being hollow, a central tube (4) being fixedly provided at the axis of the disc (3) and penetrating therethrough, the inner cavity of the disc (3) being in communication with the central tube (4), the central tube (4) being provided with a through hole in communication with the inner cavity of the disc (3), a plurality of fan-shaped mounting grooves (5) being provided on both sides of the disc (3), a fan-shaped filter screen (6) being fixedly installed in each fan-shaped mounting groove (5), the straight edges on both sides of the fan-shaped filter screen (6) being respectively fixed to the straight edges on both sides of the fan-shaped mounting groove (5) by side fixing structures (7), the large-diameter arc edge of the fan-shaped filter screen (6) being fixed to the fan-shaped mounting groove (5) by a first clamping structure (8), and the large-diameter arc edge of the fan-shaped filter screen (6) being fixed to the fan-shaped mounting groove (5) by a first clamping structure (8). The fan-shaped filter screen (6) is fixed at the small diameter arc edge of the fan-shaped installation groove (5) through a second clamping structure (9), the large diameter arc edge of the fan-shaped installation groove (5) is provided with a first arc groove (10) for the large diameter arc edge of the fan-shaped filter screen (6) to be embedded, and the small diameter arc edge of the fan-shaped installation groove (5) is provided with a second arc groove (11) for the small diameter arc edge of the fan-shaped filter screen (6) to be embedded, the surface of the fan-shaped filter screen (6) is flush with the surface of the disc (3), the first mounting ring (12) for mounting the first clamping structure (8) is fixed on both sides of the disc (3), and the second mounting ring (13) for mounting the second clamping structure (9) is fixed on both sides of the disc (3),Cover plates (37) are fixed to both ends of the central tube (4), wherein a first pulley (38) is fixed to one of the cover plates (37), the axis of the first pulley (38) being consistent with the axis of the central tube (4), a mounting plate (39) is provided at the upper end of the first pulley (38), a motor (40) is fixedly mounted on the top surface of the mounting plate (39), a second pulley (41) is fixedly mounted on the output shaft of the motor (40), the second pulley (41) is connected to the first pulley (38) through a belt, the bottom end of the mounting plate (39) is fixedly connected to the top end of the first box body (1), a circular cover body (42) is provided through the other cover plate (37), the circular cover body (42) ) is communicated with the central tube (4); the circular cover (42) is sealed and rotatably connected with the cover plate (37) at the contact point; two cylinders (43) are symmetrically sleeved on the central tube (4); the central tube (4) is rotatably connected with the cylinder (43); the bottom end of the cylinder (43) is fixedly connected with the bottom end of the inner part of the first box (1) via a plurality of support rods (44); the circular cover (42) is fixedly connected with one of the support rods (44) via a connecting block (45); the bottom end of the circular cover (42) is fixedly connected with a drainage pipe (46); the other end of the drainage pipe (46) penetrates the first box (1) and extends out of the first box (1); the drainage pipe (46) is fixedly connected with the first box (1) at the contact point A first electric valve (47) is fixedly provided on the drain pipe (46), and the first electric valve (47) is arranged on the outside of the first box (1). A filter screen leak detection structure (48) is provided at the lower end of each drain pipe (46) extending out of the port of the first box (1). The filter screen leak detection structure (48) comprises a second box (49), and a support leg is fixedly provided at the bottom of the second box (49). A filter plate (50) is slidably provided in the second box (49), and the outer edge of the filter plate (50) is sealingly slidably connected to the inner wall of the second box (49). Fifth guide rods (51) are respectively fixed at the four corners of the top surface of the filter plate (50), and a first pressing plate is fixed at the top of the fifth guide rod (51). (52), a guide cylinder (71) is slidably sleeved on the fifth guide rod (51), and the guide cylinder (71) is fixedly mounted on the top of the second box body (49). A spring (53) is fixedly arranged between the bottom end of the first pressing plate (52) and the top surface of the guide cylinder (71), and the spring (53) is sleeved on the fifth guide rod (51). A first control switch (54) is arranged at the lower end of the first pressing plate (52), and the first control switch (54) is electrically connected to a first electric valve (47) on a drainage pipe (46) at the upper end thereof through a wire. A rectangular drainage pipe (55) is fixedly arranged at the bottom of the side wall of the second box body (49), and the rectangular drainage pipe (55) is communicated with the second box body (49).A filter screen blocking detection structure (56) is provided at the lower end of each rectangular drainage pipe (55), the filter screen blocking detection structure (56) comprising a third box (57), a thin tube (58) is fixed to the bottom of the side wall of the third box (57), the thin tube (58) is in communication with the third box (57), the diameter of the drainage pipe (46) is 2-4 times the diameter of the thin tube (58), a rectangular overflow pipe (59) is fixed to the side wall of the third box (57), the rectangular overflow pipe (59) is in communication with the third box (57), the rectangular overflow pipe (59) is arranged at the upper end of the thin tube (58), and a horizontal plate (60) is fixed to the top surface of the third box (57), the horizontal plate (60) is provided on the top surface of the third box (57), and the horizontal plate (60) is provided on the top surface of the third box (57). 0) is vertically penetrated by a slide bar (61), the slide bar (61) is slidably connected with the cross plate (60) at its contact point, the bottom end of the slide bar (61) extends into the third box body (57) and is fixed with a floating plate (62), the top end of the slide bar (61) is fixed with a second pressing plate (63), a second control switch (64) is provided at the lower end of the second pressing plate (63), the second control switch (64) is fixedly mounted on the cross plate (60), and the second control switch (64) is electrically connected to a motor (40) at the upper end thereof through a wire, each of the discs (3) is provided with a filter cloth reverse suction cleaning structure (65), the reverse suction cleaning structure (65) comprises a U-shaped connecting pipe (6 6), the two ends of the U-shaped connecting pipe (66) are respectively fixedly connected with a dirt suction cover shell (67), the two openings of the dirt suction cover shells (67) are arranged opposite to each other, and the two dirt suction cover shells (67) are respectively fitted with the two sides of the disc (3), the dirt suction cover shell (67) is arranged between the first mounting ring (12) and the second mounting ring (13), the U-shaped connecting pipe (66) is connected to the dirt suction cover shell (67), the U-shaped connecting pipe (66) penetrates the first box body (1) and is fixedly connected to the contact part thereof, the bottom end of the U-shaped connecting pipe (66) is fixedly connected with a first connecting pipe (72), the first connecting pipe (72) is connected to the U-shaped connecting pipe (66), and the first connecting pipe (72) is arranged On the outside of the first housing (1), a second electric valve (68) is fixedly provided on the first connecting pipe (72), and the second electric valve (68) is electrically connected to a second control switch (64) corresponding to the side end thereof through a wire. The bottom ends of the first connecting pipes (72) of all the filter cloth reverse suction cleaning structures (65) are fixedly connected to the same second connecting pipe (69), and the second connecting pipe (69) is in communication with the first connecting pipe (72). The port of the second connecting pipe (69) is in communication with a sewage suction pump (70), and the sewage suction pump (70) is fixedly installed on the side wall of the first housing (1), and the sewage suction pump (70) is electrically connected to each second control switch (64) through a wire.

2. An industrial wastewater treatment device according to claim 1, characterized in that: The side fixing structure (7) is arranged on the side straight edge of the fan-shaped mounting groove (5), and the side fixing structure (7) comprises a first arc-shaped rotating block (14). The side straight edge of the fan-shaped mounting groove (5) is provided with an arc-shaped mounting groove (15) for the first arc-shaped rotating block (14) to rotate. The first arc-shaped rotating block (14) is rotatably arranged in the arc-shaped mounting groove (15). A rotating shaft (16) is fixedly provided through the axis of the first arc-shaped rotating block (14). Both ends of the rotating shaft (16) are rotatably connected to the arc-shaped mounting groove (15) through bearings, and one end of the rotating shaft (16) penetrates the disk (3) and is fixed with a rotating handle (17). The rotating handle (17) is fixedly connected to the disk (3) through bolts. A second arc-shaped rotating block is hingedly connected to one side of the first arc-shaped rotating block (14). (18), the second arc-shaped rotating block (18) is rotatably arranged in the arc-shaped installation groove (15), the second arc-shaped rotating block (18) and the first arc-shaped rotating block (14) clamp the side straight edge of the fan-shaped filter (6), the axis of the second arc-shaped rotating block (18) is consistent with the axis of the first arc-shaped rotating block (14), one side end face of the second arc-shaped rotating block (18) is flush with the surface of the disk (3), an arc-shaped positioning block (19) is fixed on the outside of the second arc-shaped rotating block (18), and an arc-shaped sliding groove (20) for the arc-shaped positioning block (19) to be embedded is opened on the inner wall of the arc-shaped installation groove (15), the axis of the arc-shaped positioning block (19) is consistent with the axis of the first arc-shaped rotating block (14), and one side end face of the arc-shaped positioning block (19) is flush with the surface of the disk (3).

3. An industrial wastewater treatment device according to claim 2, characterized in that: The first clamping structure (8) comprises a first arc-shaped plate (21), the first arc-shaped plate (21) being arranged in a first mounting ring (12), a first threaded rod (22) being rotatably connected to the center of the outer arc surface of the first arc-shaped plate (21) via a bearing, a side end of the first threaded rod (22) penetrating the first mounting ring (12) and being fixed with a first handle (23), the first threaded rod (22) being threadedly connected to the first mounting ring (12) at a contact point, two first guide rods (24) being symmetrically fixed to the outer arc surface of the first arc-shaped plate (21), the two first guide rods (24) being arranged parallel to the first threaded rod (22), the first guide rod (24) penetrating the first mounting ring (12) and being slidably connected to the first mounting ring (12) at a contact point, the Two second guide rods (25) are symmetrically provided at the center of the side of the first arc plate (21). The second guide rods (25) are slidably connected to the first arc plate (21) at the contact point. The two second guide rods (25) are fixed with the same first arc clamping plate (26) at one end facing the disc (3). A second threaded rod (27) is rotatably connected to the center of the side wall of the first arc clamping plate (26) through a bearing. The side end of the second threaded rod (27) penetrates the first arc plate (21) and is fixed with a second handle (28). The second threaded rod (27) is threadedly connected to the first arc plate (21). The first arc clamping plate (26) squeezes and fixes the large-diameter arc edge of the sector filter (6) into the first arc groove (10).

4. An industrial wastewater treatment device according to claim 3, characterized in that: The second clamping structure (9) comprises a second arc-shaped plate (29), the second arc-shaped plate (29) being arranged outside the second mounting ring (13), a third threaded rod (30) being rotatably connected to the center of the inner arc surface of the second arc-shaped plate (29) via a bearing, the side end of the third threaded rod (30) penetrating the second mounting ring (13) and being fixed with a third handle (31), the third threaded rod (30) being threadedly connected to the second mounting ring (13) at its contact point, two third guide rods (32) being symmetrically fixed to the inner arc surface of the second arc-shaped plate (29), the two third guide rods (32) being arranged parallel to the third threaded rod (30), the third guide rod (32) penetrating the second mounting ring (13) and being slidably connected to the second mounting ring (13) at its contact point, Two fourth guide rods (33) are symmetrically provided at the center of the side of the second arc plate (29), and the fourth guide rods (33) are slidably connected to the second arc plate (29) at the contact point. The two fourth guide rods (33) are fixed with the same second arc clamping plate (34) at one end facing the disc (3). A fourth threaded rod (35) is rotatably connected to the center of the side wall of the second arc clamping plate (34) through a bearing. The side end of the fourth threaded rod (35) penetrates the second arc plate (29) and is fixed with a fourth handle (36). The fourth threaded rod (35) is threadedly connected to the second arc plate (29) in contact. The second arc plate (29) squeezes and fixes the small-diameter arc edge of the sector filter (6) in the second arc groove (11).

5. An industrial wastewater treatment device according to claim 4, characterized in that: The motor (40), the first electric valve (47), the second electric valve (68) and the sewage suction pump (70) are electrically connected to an external power source via wires.

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