CN112591976A

CN112591976A - Impurity filtering device for industrial sewage treatment

Info

Publication number: CN112591976A
Application number: CN202110232562.9A
Authority: CN
Inventors: 张博
Original assignee: Weifang Lijin Machinery Equipment Co ltd
Current assignee: Daqing Tiandezhong Petroleum Science & Technology Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-04-02
Anticipated expiration: 2041-03-03
Also published as: CN112591976B

Abstract

The invention discloses an impurity filtering device for industrial sewage treatment, which comprises a device main body, wherein the device main body comprises a treatment box, a water inlet pipe is arranged on the side wall of the treatment box, a metal adsorption device, a clearing device and a filtering device are sequentially arranged in the treatment box from top to bottom, the metal adsorption device comprises a first partition plate and a magnetic rod, a water blocking component is arranged on the first partition plate, a telescopic component is arranged at one end of the magnetic rod, a sealing component is arranged on the outer wall of the magnetic rod, the clearing device comprises two filter pipes, a discharging component is arranged on one side of the bottom of each filter pipe, the filtering device comprises a filter plate and a second partition plate, a water outlet pipe is arranged between the filter plate and the second partition plate, annular filter cloth is connected onto the filter plate in a sliding mode, a roller guide component is. The invention relates to a filtering device which is convenient for removing and recycling metals in sewage, removing large-particle impurities and small-particle impurities in the sewage and quickly removing the filtered impurities and impurities.

Description

Impurity filtering device for industrial sewage treatment

Technical Field

The invention mainly relates to the technical field of industrial wastewater filtration, in particular to an impurity filtering device for industrial wastewater treatment.

Background

The industrial wastewater contains metal impurities, larger particle impurities and small particle impurities, and the impurities and impurities are most conveniently and quickly treated by adopting a filtering method.

According to an industrial wastewater filtration treatment device that patent document with application number CN201821317504.6 provided knows, this product includes casing and support base, support base installs the wall under the casing, the functional unit is installed to the casing outer wall, install the primary filter unit between the wall face in the casing, install the secondary filter unit between the wall face in the casing and be located the primary filter unit below, between the wall face in the casing and be located the secondary filter unit below and install the precipitation unit, the primary filter unit, it includes: a centrifugal mechanism and a pollution discharge mechanism. The product integrates high-speed centrifugal filtration, sand filtration, adsorption filtration and precipitation filtration.

The problem of the difficult thing of crossing filter simultaneously of filtering method convenient and fast clears away, though the product in the above-mentioned patent can carry out multiple filtration, nevertheless be not convenient for filter thoroughly of thing and clear away, consequently need design one kind and be convenient for in the sewage metal clear away and retrieve, be convenient for clear away in the sewage great granule debris and the filter equipment that the debris that will filter out and impurity quick removal.

Disclosure of Invention

The invention mainly provides an impurity filtering device for industrial sewage treatment, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an impurity filtering device for industrial sewage treatment comprises a device main body, wherein the device main body comprises a treatment box, the top of the side wall of the treatment box is provided with a water inlet pipe, a metal adsorption device, a clearing device and a filtering device are sequentially arranged in the treatment box from top to bottom, the metal adsorption device comprises a first partition plate and a magnetic rod, the first partition plate is fixed on the inner wall of the treatment box, the first partition plate is provided with two through holes, the first partition plate is provided with a water retaining component, one end of the magnetic rod penetrates through the side wall of the treatment box and extends into the treatment box, the other end of the magnetic rod is provided with a telescopic component, the outer wall of one end of the magnetic rod, which is close to the telescopic component, is provided with a sealing component, the clearing device comprises two filter tubes, the two ends of the filter tubes are rotatably connected with the inner wall of the treatment box, the side, the filter device comprises a filter plate and a second partition plate, the filter plate and the second partition plate are fixed on the inner wall of the treatment tank, a water outlet pipe is arranged between the filter plate and the second partition plate, the filter plate is connected with annular filter cloth in a sliding mode, guide roller assemblies are arranged on two sides of the annular filter cloth, and a dirt suction assembly is arranged at the bottom of the annular filter cloth.

Preferably, the water retaining assembly comprises four supporting blocks, the bottoms of the four supporting blocks are fixed on the first partition plate, the supporting blocks are connected with supporting springs, and the supporting springs are connected with water retaining plates. In the preferred embodiment, intermittent sewage leakage is facilitated through the water retaining assembly.

Preferably, square grooves are formed in the two sides of the water baffle, the square grooves are in matched contact with square bosses, the square bosses are arranged on the inner wall of the treatment box, and the side walls of the square bosses are fixed with telescopic hydraulic cylinders. In the preferred embodiment, the controllability of sewage leakage is realized through the cooperation between the square groove and the square boss.

Preferably, the telescopic assembly comprises a fixing frame, the fixing frame is fixed on the side wall of the treatment box, a first hydraulic cylinder is fixed on the fixing frame, and the output end of the first hydraulic cylinder is connected with the magnetic rod. In the preferred embodiment, the movement of the magnetic bar is facilitated by a telescoping assembly.

Preferably, the sealing component comprises a second hydraulic cylinder, the side wall of the second hydraulic cylinder is connected with the processing box, the output end of the second hydraulic cylinder is connected with a first sealing block, clamping jaws are arranged on two sides of the first sealing block, and an auxiliary component is arranged on the first sealing block. In the preferred embodiment, the side wall of the treatment box is sealed by the sealing assembly, and the metal adsorbed on the magnetic rod is convenient to remove.

Preferably, the auxiliary assembly includes locating plate and connecting rod, the locating plate is fixed and is being handled the case lateral wall, two the connecting rod all runs through the locating plate and connects the sealed piece of second, compression spring is cup jointed to the connecting rod outer wall, the locating plate both ends are all rotated and are connected the balance plate, the balance plate both ends contact sealed piece upper portion of second and jack catch respectively. In the preferred embodiment, the sealing is facilitated by the auxiliary assembly engaging the seal assembly.

Preferably, the filter tube is half hollow semi-solid structure, half hollow structure outer wall of filter tube is equipped with a plurality of filtration pores, half solid structure outer wall of filter tube is equipped with the blowpit, filter tube one end is equipped with driving motor, driving motor fixes in the fixed box, the fixed box is fixed at handling the case lateral wall, the driving motor output runs through and handles case lateral wall and connect the filter tube. In this preferred embodiment, provide power for the rotation of filter tube through driving motor, realize the filtration to the large granule debris in the sewage through the filtration pore, be convenient for remove large granule debris through the blowpit.

Preferably, the subassembly of unloading includes the stripper, the articulated inside lateral wall of case that handles of stripper one end, the fixed annular frame of stripper one side, sliding connection transfer line in the annular frame, the drive pneumatic cylinder output is connected to the transfer line, it fixes at handling incasement wall to drive the pneumatic cylinder. In the preferred embodiment, large-particle impurities can be directly guided out of the treatment box through the discharging assembly.

Preferably, the guide roller subassembly includes communicating pipe and first deflector roll, communicating pipe through connection handles the case lateral wall, communicating pipe both ends inner wall all rotates and connects the second deflector roll, first deflector roll rotates to connect handles case lateral wall bottom, the drive motor output is connected to first deflector roll one end, drive motor fixes and handles case lateral wall bottom, first deflector roll all contacts annular filter cloth with second deflector roll lateral wall. In the present preferred embodiment, the movement of the filter cloth is effected by a guide roller assembly.

Preferably, the soil pick-up subassembly is including flexible pneumatic cylinder and soil pick-up pump, flexible pneumatic cylinder is fixed in handling incasement wall bottom, the soil pick-up pump soil pick-up end runs through and handles the case and extend to the flexible pneumatic cylinder output of internal connection, the soil pick-up pump soil pick-up end contact annular filter cloth. In the preferred embodiment, dirt on the surface of the filter cloth is conveniently sucked by the dirt sucking assembly.

Compared with the prior art, the invention has the beneficial effects that:

the metal adsorption device can collect and recover metal in sewage, the metal adsorption device adsorbs the metal in the sewage through the magnetic rod, the magnetic rod can move conveniently through the telescopic component, the sealing component can realize the sealing of the side wall of the treatment box and can remove the metal adsorbed on the magnetic rod, the cleaning device can filter larger particle impurities in the sewage and can move the larger particle impurities out of the treatment box conveniently, the water blocking component can facilitate the intermittent leakage of the sewage above the cleaning device, the cleaning device can filter water and unload the sewage conveniently, the driving motor in the cleaning device provides power for the rotation of the filter pipe, the filter holes can filter the large particle impurities in the sewage, the discharge chute can remove the large particle impurities conveniently, the discharge component can directly guide the large particle impurities out of the treatment box, and the filter device can clean the filter cloth in real time while filtering the small particle impurities in the water, the filter device realizes the movement of the filter cloth through the guide roller assembly, and is convenient for absorbing and removing dirt on the surface of the filter cloth through the dirt absorbing assembly.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is an isometric view of the overall construction of the present invention;

FIG. 2 is an isometric view of a filter tube construction of the present invention;

FIG. 3 is an isometric view of the seal assembly construction of the present invention;

FIG. 4 is an isometric view of the water dam assembly of the present invention;

FIG. 5 is a side view of the overall structure of the present invention;

FIG. 6 is an enlarged view of the structure at A of the present invention.

Description of the drawings: 1. a device main body; 11. a treatment tank; 12. a water inlet pipe; 13. a water outlet pipe; 2. a metal adsorption device; 21. a first partition plate; 211. a through hole; 22. a magnetic bar; 23. a water retaining assembly; 231. a support block; 232. a support spring; 233. a water baffle; 2331. a square groove; 2332. a square boss; 2333. a telescopic hydraulic cylinder; 24. a telescoping assembly; 241. a fixed mount; 242. a first hydraulic cylinder; 25. a seal assembly; 251. a second hydraulic cylinder; 252. a first seal block; 2521. a claw; 253. an auxiliary component; 2531. positioning a plate; 2532. a connecting rod; 2533. a second seal block; 2534. a compression spring; 2535. a balance plate; 3. a clearing device; 31. a filter tube; 311. filtering holes; 312. a discharge chute; 313. a drive motor; 314. a fixed box; 32. a discharge assembly; 321. a stripper plate; 322. an annular frame; 323. a transmission rod; 324. driving a pneumatic cylinder; 4. a filtration device; 41. filtering the plate; 42. a second partition plate; 43. annular filter cloth; 44. a guide roller assembly; 441. a communicating pipe; 442. a first guide roller; 443. a second guide roller; 444. a drive motor; 45. a dirt suction assembly; 451. a telescopic pneumatic cylinder; 452. a sewage suction pump.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1, 3, 4, 5, and 6 for emphasis, an impurity filtering apparatus for industrial sewage treatment comprises an apparatus main body 1, the apparatus main body 1 comprises a treatment tank 11, a water inlet pipe 12 is disposed at the top of the sidewall of the treatment tank 11, a metal adsorbing device 2, a removing device 3, and a filtering device 4 are sequentially disposed in the treatment tank 11 from top to bottom, the metal adsorbing device 2 comprises a first partition plate 21 and a magnetic rod 22, the first partition plate 21 is fixed on the inner wall of the treatment tank 11, two through holes 211 are disposed on the first partition plate 21, a water blocking component 23 is disposed on the first partition plate 21, one end of the magnetic rod 22 penetrates through the sidewall of the treatment tank 11 and extends to the inside, a telescopic component 24 is disposed at the other end, a sealing component 25 is disposed on the outer wall of one end of the magnetic rod 22 close to the telescopic component 24, the water blocking component 23 comprises four supporting, the bottoms of the four supporting blocks 231 are all fixed on the first separating plate 21, the supporting blocks 231 are connected with supporting springs 232, the supporting springs 232 are connected with water baffles 233, both sides of the water baffles 233 are provided with square grooves 2331, the square grooves 2331 are in fit contact with square bosses 2332, both the square bosses 2332 are arranged on the inner wall of the treatment tank 11, the side walls of both the square bosses 2332 are fixed with telescopic hydraulic cylinders 2333, the telescopic assembly 24 comprises a fixing frame 241, the fixing frame 241 is fixed on the side wall of the treatment tank 11, a first hydraulic cylinder 242 is fixed on the fixing frame 241, the output end of the first hydraulic cylinder 242 is connected with a magnetic rod 22, the sealing assembly 25 comprises a second hydraulic cylinder 251, the side wall of the second hydraulic cylinder 251 is connected with the treatment tank 11, the output end of the second hydraulic cylinder 251 is connected with a first sealing block 252, both sides of the first sealing block 252 are provided with, be equipped with supplementary subassembly 253 on first sealed piece 252, supplementary subassembly 253 includes locating plate 2531 and connecting rod 2532, locating plate 2531 is fixed at treatment box 11 lateral wall, two connecting rod 2532 all runs through locating plate 2531 and connects second sealed piece 2533, compression spring 2534 is cup jointed to the connecting rod 2532 outer wall, locating plate 2531 both ends are all rotated and are connected balance plate 2535, balance plate 2535 both ends contact second sealed piece 2533 upper portion and jack catch 2521 respectively. The sewage enters the treatment box 11 through the water inlet pipe 12, the magnetic rod 22 magnetically collects the metal in the sewage, the sewage drives the water baffle 233 to compress the support spring 232 and then move downwards along with the continuous inflow of the sewage, the sewage moves downwards after moving downwards until the square groove 2331 leaves the square boss 2332, the weight of the sewage above the sewage decreases and the water baffle 233 moves upwards after the sewage leaks, the intermittent downward leakage of the sewage is realized, when the metal adsorbed on the magnetic rod 22 needs to be eliminated, the telescopic hydraulic cylinder 2333 is started firstly, the telescopic hydraulic cylinder 2333 drives the water baffle 233 to move downwards so that the sewage completely leaks downwards, the second hydraulic cylinder 251 is started, the output end of the second hydraulic cylinder 251 drives the first sealing block 251 to move outwards, the compression spring 2534 drives the second sealing block 2533 to move outwards, the first hydraulic cylinder 242 drives the magnetic rod 22 to move outwards and then resets, when the hydraulic cylinder 251 resets, the output end of the first sealing block 252 drives the first sealing block 252 to move inwards, the jaw 2521 presses one end of the balance plate 2535, the other end of the balance plate 2535 drives the second sealing block 2533 to move inwards until the inner walls of the first sealing block 252 and the second sealing block 2533 are attached to the magnetic rod 22, and then the metal on the magnetic rod 22 is scraped along with the resetting of the magnetic rod 22.

Please refer to fig. 1, 2 and 5, wherein the cleaning device 3 includes two filter tubes 31, two ends of each filter tube 31 are rotatably connected to the inner wall of the processing box 11, the side walls of the filter tubes 31 are disposed in the through holes 211, a discharging assembly 32 is disposed at one side of the bottom of each filter tube 31, the filter tubes 31 are semi-hollow and semi-solid, the outer wall of the semi-hollow structure of the filter tubes 31 is provided with a plurality of filter holes 311, the outer wall of the semi-solid structure of the filter tubes 31 is provided with a discharging slot 312, one end of each filter tube 31 is provided with a driving motor 313, the driving motor 313 is fixed in a fixing box 314, the fixing box 314 is fixed at the side wall of the processing box 11, the output end of the driving motor 313 penetrates through the side wall of the processing box 11 to connect with the filter tubes 31, the discharging assembly 32 includes a discharging plate 321, one end of the discharging plate 321 is hinged to, the annular frame 322 is connected with a transmission rod 323 in a sliding way, the transmission rod 323 is connected with the output end of a driving pneumatic cylinder 324, and the driving pneumatic cylinder 324 is fixed on the inner wall of the treatment box 11. The sewage directly leaks downwards after being filtered by the filtering holes 311, larger particle impurities are filtered by the filtering holes 311, after the sewage leaks downwards, the output end of the driving motor 313 drives the filtering pipe 31 to rotate, the larger particle impurities directly leak downwards into the discharging chute 312, when the filtering pipe 31 continues to rotate, the output end of the driving pneumatic cylinder 324 drives the transmission rod 323 to slide in the annular frame 322, the annular frame 322 drives the discharging plate 321 to rotate around the hinged position of the discharging plate 321, the discharging plate 321 rotates and inclines, and the larger particle impurities in the discharging chute 312 are discharged through the discharging plate 321.

Please refer to fig. 1 and 5, the filtering device 4 includes a filter plate 41 and a second partition plate 42, the filter plate 41 and the second partition plate 42 are both fixed on the inner wall of the processing box 11, a water outlet pipe 13 is disposed between the filter plate 41 and the second partition plate 42, an annular filter cloth 43 is slidably connected on the filter plate 41, guide roller assemblies 44 are disposed on both sides of the annular filter cloth 43, a dirt absorbing assembly 45 is disposed at the bottom of the annular filter cloth 43, each guide roller assembly 44 includes a communicating pipe 441 and a first guide roller 442, the communicating pipe 441 is connected to the side wall of the processing box 11 in a penetrating manner, the inner walls of both ends of the communicating pipe 441 are rotatably connected to a second guide roller 443, the first guide roller 442 is rotatably connected to the bottom of the side wall of the processing box 11, one end of the first guide roller 442 is connected to an output end of a transmission motor 444, the transmission motor 444 is fixed at the bottom, soil pick-up subassembly 45 is including flexible pneumatic cylinder 451 and soil pick-up pump 452, flexible pneumatic cylinder 451 is fixed in handling case 11 inner wall bottom, soil pick-up pump 452 soil pick-up end runs through and handles case 11 and extends to the flexible pneumatic cylinder 451 output of internal connection, soil pick-up pump 452 soil pick-up end contacts annular filter cloth 43. The sewage that leaks down is discharged through outlet pipe 13 after annular filter cloth 43 and filter plate 41 filter, when cleaning annular filter cloth 43, open driving motor 444, driving motor 444 output drives first deflector roll 442 and rotates, first deflector roll 442 drives annular filter cloth 43 and removes, when there is filth annular filter cloth 43 on the surface and removes to the upper portion of the soil pick-up end of soil pick-up pump 452, open soil pick-up pump 452 and flexible pneumatic cylinder 451, flexible pneumatic cylinder 451 drives the reciprocating motion of the soil pick-up end of soil pick-up pump 452, the soil pick-up end of soil pick-up pump 452 is to the surface filth of annular filter cloth 43 and is clear away.

The specific process of the invention is as follows:

the sewage enters the treatment box 11 through the water inlet pipe 12, the magnetic bar 22 magnetically collects the metal in the sewage, the sewage drives the water baffle 233 to compress the support spring 232 and then move downwards along with the continuous inflow of the sewage, the sewage moves downwards after moving downwards until the square groove 2331 leaves the square boss 2332, the sewage leaks downwards, the weight of the sewage above the sewage leaks downwards reduces the water baffle 233 to move upwards, the intermittent downward leakage of the sewage is realized, the downward leaked sewage is directly leaked downwards after being filtered by the filter holes 311, larger particle impurities are filtered by the filter holes 311, after the sewage leaks downwards, the output end of the driving motor 313 drives the filter pipe 31 to rotate, the larger particle impurities are directly leaked downwards into the discharge chute 312, the output end of the driving pneumatic cylinder 324 drives the transmission rod 323 to slide in the annular frame 322 while the filter pipe 31 continues to rotate, the annular frame 322 drives the discharge plate 321 to rotate around the hinged position, the discharge plate 321 rotates and inclines, the larger particle impurities in the discharge chute 312 are discharged through the, when cleaning the annular filter cloth 43, the transmission motor 444 is started, the output end of the transmission motor 444 drives the first guide roller 442 to rotate, the first guide roller 442 drives the annular filter cloth 43 to move, when dirt on the surface of the annular filter cloth 43 moves to the upper part of the dirt suction end of the dirt suction pump 452, the dirt suction pump 452 and the telescopic pneumatic cylinder 451 are started, the telescopic pneumatic cylinder 451 drives the dirt suction end of the dirt suction pump 452 to reciprocate, the dirt suction pump 452 removes dirt on the surface of the annular filter cloth 43, when metal adsorbed on the magnetic bar 22 needs to be removed, the telescopic hydraulic cylinder 2333 is started first, the telescopic hydraulic cylinder 2333 drives the water baffle to move downwards to enable all the sewage to leak downwards, the second hydraulic cylinder 251 is started, the output end of the second hydraulic cylinder 251 drives the first sealing block 252 to move outwards, the compression spring 2534 drives the second sealing block 2533 to move outwards, the first hydraulic cylinder 242 drives the magnetic bar 233 to move outwards and then reset, when resetting, the output end of the second hydraulic cylinder 251 drives the first sealing block 252 to move inwards, the claw 2521 on the side wall of the first sealing block 252 presses one end of the balancing plate 2535, the other end of the balancing plate 2535 drives the second sealing block 2533 to move inwards to the position where the inner walls of the first sealing block 252 and the second sealing block 2533 are tightly attached to the magnetic bar 22, and along with the resetting of the magnetic bar 22, metal on the magnetic bar 22 is scraped.

The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The utility model provides an impurity filtering device for industrial sewage treatment, includes device main part (1), its characterized in that, device main part (1) is including handling case (11), it is equipped with inlet tube (12) to handle case (11) lateral wall top, it is equipped with metal adsorption device (2) from top to bottom in proper order to handle case (11), clearing device (3) and filter equipment (4), metal adsorption device (2) include first division board (21) and magnetic force stick (22), first division board (21) are fixed at handling case (11) inner wall, be equipped with two through-holes (211) on first division board (21), be equipped with water retaining assembly (23) on first division board (21), magnetic force stick (22) one end is run through and is handled case (11) lateral wall and extend to inside, and the other end is equipped with flexible subassembly (24), magnetic force stick (22) are close to the one end outer wall of flexible subassembly (24) is equipped with seal assembly (25), clearing device (3) are including crossing two filter tubes (31), filter tube (31) both ends are all rotated and are connected and handle case (11) inner wall, through-hole (211) are arranged in to filter tube (31) lateral wall, every filter tube (31) bottom one side all is equipped with unloading subassembly (32), filter equipment (4) are including filter plate (41) and second division board (42), filter plate (41) and second division board (42) are all fixed and are being handled case (11) inner wall, be equipped with outlet pipe (13) between filter plate (41) and second division board (42), sliding connection annular filter cloth (43) on filter plate (41), annular filter cloth (43) both sides all are equipped with guide roller subassembly (44), annular filter cloth (43) bottom is equipped with dirt absorbing component (45).

2. The impurity filtering device for industrial sewage treatment as claimed in claim 1, wherein said water blocking assembly (23) comprises four supporting blocks (231), the bottoms of said four supporting blocks (231) are all fixed on the first partition plate (21), a supporting spring (232) is connected to said supporting blocks (231), and a water blocking plate (233) is connected to said supporting spring (232).

3. The impurity filtering device for industrial sewage treatment as claimed in claim 2, wherein the water guard plate (233) is provided at both sides thereof with square recesses (2331), the square recesses (2331) are fitted to and contacted with square bosses (2332), both the square bosses (2332) are provided at the inner wall of the treatment tank (11), and both the side walls of the square bosses (2332) are fixed with telescopic hydraulic cylinders (2333).

4. The impurity filtering device for industrial sewage treatment as claimed in claim 1, wherein the telescopic assembly (24) comprises a fixing frame (241), the fixing frame (241) is fixed on the side wall of the treatment box (11), a first hydraulic cylinder (242) is fixed on the fixing frame (241), and the output end of the first hydraulic cylinder (242) is connected with the magnetic bar (22).

5. The impurity filtering device for industrial sewage treatment as claimed in claim 1, wherein the sealing assembly (25) comprises a second hydraulic cylinder (251), the side wall of the second hydraulic cylinder (251) is connected with the treatment tank (11), the output end of the second hydraulic cylinder (251) is connected with a first sealing block (252), the two sides of the first sealing block (252) are provided with claws (2521), and the first sealing block (252) is provided with an auxiliary assembly (253).

6. The impurity filtering device for industrial sewage treatment as claimed in claim 5, wherein the auxiliary assembly (253) comprises a positioning plate (2531) and connecting rods (2532), the positioning plate (2531) is fixed on the side wall of the treatment box (11), the two connecting rods (2532) penetrate through the positioning plate (2531) to connect with the second sealing block (2533), the outer wall of the connecting rod (2532) is sleeved with a compression spring (2534), the two ends of the positioning plate (2531) are rotatably connected with the balance plate (2535), and the two ends of the balance plate (2535) respectively contact with the upper part of the second sealing block (2533) and the clamping jaws (2521).

7. The impurity filtering device for industrial sewage treatment as claimed in claim 1, wherein the filtering tube (31) is of a semi-hollow and semi-solid structure, the outer wall of the semi-hollow structure of the filtering tube (31) is provided with a plurality of filtering holes (311), the outer wall of the semi-solid structure of the filtering tube (31) is provided with a discharging chute (312), one end of the filtering tube (31) is provided with a driving motor (313), the driving motor (313) is fixed in a fixed box (314), the fixed box (314) is fixed on the side wall of the treatment box (11), and the output end of the driving motor (313) penetrates through the side wall of the treatment box (11) to be connected with the filtering tube (31).

8. The impurity filtering device for industrial sewage treatment as claimed in claim 1, wherein said discharging assembly (32) comprises a discharging plate (321), one end of said discharging plate (321) is hinged with the inner side wall of the treatment box (11), an annular frame (322) is fixed on one side of said discharging plate (321), a transmission rod (323) is slidably connected in said annular frame (322), said transmission rod (323) is connected with the output end of a driving pneumatic cylinder (324), and said driving pneumatic cylinder (324) is fixed on the inner wall of the treatment box (11).

9. The impurity filtering device for industrial sewage treatment as claimed in claim 1, wherein the guide roller assembly (44) comprises a communicating pipe (441) and a first guide roller (442), the communicating pipe (441) is connected through the side wall of the treatment tank (11), the inner walls of both ends of the communicating pipe (441) are rotatably connected with a second guide roller (443), the first guide roller (442) is rotatably connected with the bottom of the side wall of the treatment tank (11), one end of the first guide roller (442) is connected with the output end of the transmission motor (444), the transmission motor (444) is fixed at the bottom of the side wall of the treatment tank (11), and the side walls of the first guide roller (442) and the second guide roller (443) are both contacted with the annular filter cloth (43).

10. The impurity filtering device for industrial sewage treatment as claimed in claim 1, wherein the sewage suction assembly (45) comprises a telescopic pneumatic cylinder (451) and a sewage suction pump (452), the telescopic pneumatic cylinder (451) is fixed at the bottom of the inner wall of the treatment box (11), the sewage suction end of the sewage suction pump (452) extends through the treatment box (11) to the output end of the internal connection telescopic pneumatic cylinder (451), and the sewage suction end of the sewage suction pump (452) contacts the annular filter cloth (43).