A sewage treatment filtration and slag removal device and method

Abstract

The present invention discloses a sewage treatment filtering and slag removal device and method, which relates to the technical field of sewage treatment. It includes a drainage component and a filtering component. The filtering component includes a filtering box arranged below the drainage component. A sewage treatment pool is arranged in the middle of the filtering box. Two slag filtering tanks are also arranged on both sides of the sewage treatment pool. A slag removal filter screen is installed by digging holes in the box board between the sewage treatment pool and the slag filtering tank. Two filter screen dredging components are also assembled in the sewage treatment pool, and a slag removal component is assembled in the slag filtering tank. In this application, the sewage in the slag filtering tank can be filtered through the slag removal filter screen, and the particulate impurities will be left in the slag filtering tank. When particulate impurities are blocked on the slag removal filter screen, the filter screen dredging assembly can push the cleaning roller to roll back and forth continuously. While rolling, the bristles arranged on the cleaning roller will penetrate the slag removal filter screen and push out and clean the particulate impurities therein. The operation is simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and more specifically, to a sewage treatment filtering and slag removal device and method. Background Art

[0002] With the development and progress of society, industrial, agricultural and domestic sewage is increasing. When treating sewage, a sewage treatment device is generally used to treat the sewage to make the sewage meet the water quality requirements for discharging into a certain water body or being reused, and in common sewage, particulate impurities are usually mixed. During the sewage treatment process, the particulate impurities need to be separated from the sewage first.

[0003] In the prior art, a filter screen is generally used to preliminarily filter the sewage to filter out the particulate impurities in the sewage, which is convenient for subsequent treatment of the sewage. However, the particulate impurities are easily adhered to or blocked on the filter screen. In the state of not being cleaned for a long time, the filter screen will be blocked too much or the impurities will agglomerate, resulting in low flow efficiency. It is necessary to stop the machine and take out the filter screen for cleaning, which not only reduces the sewage treatment efficiency but also further increases the workload of the staff. Based on the above problems, we provide a sewage treatment filtering and slag removal device and method. Summary of the Invention

[0004] In order to solve the problems raised in the above background art, the present invention provides a sewage treatment filtering and slag removal device and method.

[0005] The sewage treatment filtering and slag removal device and method provided by the present invention adopt the following technical solutions:

[0006] A sewage treatment filtering and slag removal device includes: a drainage component and a filtering component. The filtering component includes a filter box arranged below the drainage component. A sewage treatment pool is arranged in the middle of the filter box. Two slag filter tanks are also arranged on both sides of the sewage treatment pool. And a slag removal filter screen is installed by digging holes in the box board between the sewage treatment pool and the slag filter tank. Two filter screen dredging components are also assembled in the sewage treatment pool, and a slag discharge component is assembled in the slag filter tank;

[0007] The filter screen dredging component includes a cleaning roller. Multiple bristles are arranged on the surface of the cleaning roller and are used to cooperate with and insert into the mesh holes of the slag removal filter screen to clean the particulate impurities in the mesh holes of the slag removal filter screen;

[0008] The slag discharge component includes roller shafts rotatably installed at both ends in the slag filter tank. A conveyor belt is drivingly installed on the roller shafts. And multiple net plates for pushing particulate impurities are installed on the conveyor belt. A slag discharge groove is also opened at a position close to the end of the slag filter tank. The bottom of the slag filter tank communicates with the slag discharge groove. When the net plate slides, it can push the particulate impurities into the slag discharge groove;

[0009] Among them, the filter screen dredging component further includes an auxiliary groove arranged above the cleaning roller. A cover plate is arranged at the top of the auxiliary groove, and a parallelogram guiding groove for restricting the sliding of the central shaft of the cleaning roller is formed at the bottom of the cover plate.

[0010] Preferably, racks are further installed on the two long inner walls of the auxiliary groove. A rolling gear is sleeved on the central shaft of the cleaning roller, and the rolling gear meshes with the rack on the closer side. A magnetic guiding strip is arranged below the rack, and support seats are sleeved on the central shaft below the rolling gear. Strong magnet blocks are installed on the sides of the support seats facing the two magnetic guiding strips, and support rollers are installed at the four corners of the support seats.

[0011] Preferably, a support frame is further installed on the bottom of the support seat. The support frame extends into the sewage treatment pool, and a rotating seat is installed on the support frame. A power motor is fixedly installed on the rotating seat, and a propeller is sleeved on the output shaft of the power motor.

[0012] Preferably, a pulley is further installed at the end of the output shaft of the roller shaft extending outside the filter box. The same belt is arranged on the two pulleys in a transmission manner. A first motor is installed outside the filter box, and two gears of a synchronous gear set A are respectively installed on the output shaft of the first motor and one of the roller shafts.

[0013] Preferably, a hopper is rotatably installed in the slag discharge groove. The hopper is fan-shaped, a material groove is formed at the top of the hopper, and a blanking groove adapted to the hopper is installed on one side of the slag discharge groove. A collection groove is installed on the side of the filter end, and the collection groove is arranged below the two blanking grooves.

[0014] Preferably, a trigger gear is further installed on the central shaft of the hopper. An idler gear is meshed on each side of the trigger gear. The idler gear is arranged in four equal parts, and teeth are arranged in two symmetric equal parts, and the other two symmetric equal parts are smooth surfaces.

[0015] Preferably, two gears of a synchronous gear set B are respectively installed on the central shafts of the two idler gears. A second motor is installed on the central shaft of one of the gears in the synchronous gear set B.

[0016] Preferably, the drainage component includes a drainage groove. A diversion channel composed of an outer side plate and an inner inclined plate is installed below the drainage groove, and the diversion channel is connected to the two filter residue grooves.

[0017] Preferably, the same buffer plate is installed on the tops of the two inner inclined plates. Coarse filter screens are installed at both edges of the buffer plate, and side sealing plates are installed on the front and rear sides of the drainage component.

[0018] A sewage treatment filtering and slag removal method, which is applied to a sewage treatment filtering and slag removal device, includes:

[0019] S1: Drain the sewage into the drainage component through the drainage trough, and through the diversion channel formed between the outer plate and the inner inclined plate, divert the sewage into two slag filtering troughs respectively. Filter the solid particles in the sewage through the slag removal filter screen. Then, since the slag filtering trough is connected to the bottom of the slag discharge trough, with the cooperation of the mesh plate, the solid particles can be pushed into the slag discharge trough. There is a material trough on the hopper, and the particulate impurities entering the slag discharge trough will enter the material trough. When the hopper flips, the particulate impurities in the material trough will be sent into the blanking trough, and the particulate impurities can be discharged into the collection trough through the blanking trough for further collection and treatment;

[0020] S2: When the power motor drives the propeller to rotate, thrust can be generated, which can push the support frame and the cleaning roller to slide forward. When reaching the end of the guide groove, the output shaft of the cleaning roller will slide along the guide groove to the other side. At this time, the rolling gear will engage with the rack on the other side, and the power motor will adjust the direction of the propeller to achieve automatic commutation, so as to be able to push the cleaning roller to roll back and forth along the slag removal filter screen. The bristles arranged on the surface of the cleaning roller can penetrate the slag removal filter screen and push out the particulate impurities in the mesh holes, facilitating the dredging of the slag removal filter screen.

[0021] In summary, the present invention includes the following beneficial technical effects:

[0022] 1. In this application, the sewage in the slag filtering trough can be filtered through the slag removal filter screen, and the particulate impurities will be left in the slag filtering trough. When there are particulate impurities blocking the slag removal filter screen, the filter screen dredging component can push the cleaning roller to roll back and forth continuously. While rolling, the bristles arranged on the cleaning roller will penetrate the slag removal filter screen and push out the particulate impurities therein for cleaning. The operation is simple and convenient.

[0023] 2. In this application, a guide groove is provided at the bottom of the cover plate, and the guide groove is arranged in a parallelogram shape. The output shaft of the cleaning roller can slide along the guide groove, and a rolling gear and a support seat are also sleeved on the output shaft of the cleaning roller. When the rolling gear cooperates with the corresponding rack, it can push the cleaning roller to rotate. The strong magnet block arranged on the support seat can generate a strong suction force with the magnetic guide strip, thereby helping to stabilize the cleaning roller and facilitating stable operation.

[0024] 3. In this application, a power motor is also installed on the support seat through a rotating seat, and a propeller is installed on the output shaft of the power motor. When the propeller rotates, it can push the support frame and the cleaning roller to slide forward. When reaching the end of the guide groove, the output shaft of the cleaning roller will slide along the guide groove to the other side. At this time, the rolling gear will engage with the rack on the other side, and the power motor will adjust the direction of the propeller to achieve automatic commutation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a split schematic diagram of the drainage component of the present invention;

[0027] Figure 3 is a cross-sectional schematic diagram of the filtration component of the present invention;

[0028] Figure 4 is a partial structural schematic diagram of the slag discharge component of the present invention;

[0029] Figure 5 is a split schematic diagram of the filter screen dredging component of the present invention;

[0030] Figure 6 is a structural schematic diagram of the cleaning roller of the present invention;

[0031] Figure 7 is a structural schematic diagram of the hopper of the present invention

[0032] Figure 8 is the present invention Figure 3 is a cross-sectional schematic diagram of the interrupted section.

[0033] Explanation of reference numerals: 1, drainage component; 101, drainage groove; 102, outer side plate; 103, inner inclined plate; 104, buffer plate; 105, coarse filter screen; 106, side seal plate; 2, filtration component; 21, filtration box; 2101, sewage treatment pool; 2102, filter residue groove; 2103, slag removal filter screen; 22, filter screen dredging component; 2201, cleaning roller; 2202, brush bristles; 2203, auxiliary groove; 2204, cover plate; 2205, guide groove; 2206, rack; 2207, rolling gear; 2208, magnetic guide bar; 2209, support seat; 2210, support roller; 2211, strong magnet block; 2212, support frame; 2213, rotating seat; 2214, power motor; 2215, propeller; 23, slag discharge component; 2301, roller shaft; 2302, conveyor belt; 2303, mesh plate; 2304, pulley; 2305, belt; 2307, first motor; 2308, synchronous gear set A; 2309, slag discharge groove; 2310, hopper; 2311, material groove; 2312, blanking groove; 2313, collection groove; 2314, trigger gear; 2315, special-shaped gear; 2316, synchronous gear set B; 2317, second motor. Detailed implementation manners

[0034] The following further elaborates on the present invention in conjunction with the attached Figures 1 to 8 drawings for a more detailed description.

[0035] It should be noted that the attached drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size for illustration, and any dimensions are merely exemplary and not restrictive. In addition, the same reference signs are used for the same structures, elements or fittings that appear in more than two figures to reflect similar features. Embodiment 1

[0036] The present invention discloses a sewage treatment filtering and slag removing device. Referring to Figures 1 to 8 , a sewage treatment filtering and slag removing device includes a drainage component 1 and a filtering component 2. The filtering component 2 includes a filtering tank 21 arranged below the drainage component 1. A sewage treatment pool 2101 is arranged in the middle of the filtering tank 21. Two slag filtering tanks 2102 are also arranged on both sides of the sewage treatment pool 2101. A slag removing filter screen 2103 is installed by digging holes in the box board between the sewage treatment pool 2101 and the slag filtering tank 2102. Two filter screen dredging components 22 are also assembled in the sewage treatment pool 2101, and a slag discharging component 23 is assembled in the slag filtering tank 2102. The drainage component 1 includes a drainage tank 101. A diversion channel composed of an outer side plate 102 and an inner inclined plate 103 is installed below the drainage tank 101. The diversion channel is docked on the two slag filtering tanks 2102. The same buffer plate 104 is also installed on the tops of the two inner inclined plates 103. Coarse filter screens 105 are installed at both edges of the buffer plate 104. Side sealing plates 106 are also installed on the front and rear sides of the drainage component 1. During operation, sewage can be discharged into the drainage component 1 through the drainage tank 101. Since a diversion channel is formed between the outer side plate 102 and the inner inclined plate 103, the sewage can be diverted into the two slag filtering tanks 2102 respectively, and the sewage is subjected to slag filtering treatment in the slag filtering tank 2102. In addition, a buffer plate 104 is installed on the tops of the two inner inclined plates 103, which can buffer the sewage and avoid excessive impact force of the sewage on the equipment and cause damage to the equipment.

[0037] Referring to Figure 3 , 5, 6, the filter screen dredging component 22 includes a cleaning roller 2201. Multiple bristles 2202 that are adapted to be inserted into the mesh holes of the slag removal filter screen 2103 are arranged on the surface of the cleaning roller 2201, which are used to clean the particulate impurities in the mesh holes of the slag removal filter screen 2103. The filter screen dredging component 22 further includes an auxiliary groove 2203 arranged above the cleaning roller 2201. A cover plate 2204 is arranged at the top of the auxiliary groove 2203. A parallelogram guiding groove 2205 that is adapted to limit the sliding of the central axis of the cleaning roller 2201 is formed at the bottom of the cover plate 2204. Rack bars 2206 are further installed on the two long inner walls of the auxiliary groove 2203. A rolling gear 2207 is sleeved on the central axis of the cleaning roller 2201. The rolling gear 2207 meshes with the rack bar 2206 on the closer side. A magnetic guiding strip 2208 is arranged below the rack bar 2206. A support seat 2209 is further sleeved on the central axis below the rolling gear 2207. Strong magnet blocks 2211 are installed on the sides of the support seat 2209 facing the two magnetic guiding strips 2208. Support rollers 2210 are installed at the four corners of the support seat 2209. During operation, the output shaft of the cleaning roller 2201 can be restricted to slide in the guiding groove 2205, and the guiding groove 2205 is arranged as a parallelogram. When the cleaning roller 2201 slides in the corresponding groove of the guiding groove 2205, the rolling gear 2207 thereon will mesh with the rack bar 2206 on the closer side. As the rolling gear 2207 rolls forward on the rack bar 2206, it can push the cleaning roller 2201 to keep rotating forward. The bristles arranged on the surface of the cleaning roller 2201 can penetrate the slag removal filter screen 2103 and push out the particulate impurities in the mesh holes, facilitating the dredging of the slag removal filter screen 2103, and it is simple and easy to operate. In addition, to keep the cleaning roller 2201 stable during operation, a support seat 2209 is further sleeved on the output shaft of the cleaning roller 2201. The strong magnet blocks 2211 arranged on the support seat 2209 can generate a strong suction force with the magnetic guiding strip 2208 to keep stable, and the support rollers 2210 arranged at the four corners of the support seat 2209 can roll forward on the magnetic guiding strip 2208.

[0038] Refer to Figure 5 , 6, a support frame 2212 is also installed on the bottom of the support base 2209. The support frame 2212 extends into the sewage treatment tank 2101. A rotating seat 2213 is installed on the support frame 2212, and a power motor 2214 is fixedly installed on the rotating seat 2213. A propeller 2215 is sleeved on the output shaft of the power motor 2214. Further, in order to be able to push the cleaning roller 2201 to move forward continuously and reverse at the end position, a power motor 2214 is installed on the support frame 2212 through the rotating seat 2213. When the power motor 2214 drives the propeller 2215 to rotate, a thrust can be generated, which can push the support frame 2212 and the cleaning roller 2201 to slide forward. When reaching the end of the guide groove 2205, the output shaft of the cleaning roller 2201 will slide along the guide groove 2205 to the other side. At this time, the rolling gear 2207 will engage with the rack 2206 on the other side, and the power motor 2214 will adjust the direction of the propeller 2215 to achieve automatic commutation. Embodiment 2

[0039] Refer to Figure 3 、 4, 7. The slag discharging component 23 includes roller shafts 2301 rotatably installed at both ends inside the slag filtering tank 2102. A conveyor belt 2302 is drivingly installed on the roller shafts 2301, and a plurality of mesh plates 2303 for pushing granular impurities are installed on the conveyor belt 2302. A slag discharging groove 2309 is also opened at a position close to the end of the slag filtering tank 2102. The bottom of the slag filtering tank 2102 communicates with the bottom of the slag discharging groove 2309. When the mesh plate 2303 slides, it can push the granular impurities into the slag discharging groove 2309. A pulley 2304 is also installed at the end of the output shaft of the roller shaft 2301 extending outside the filtering box 21. The same belt 2305 is drivingly arranged on the two pulleys 2304. A first motor 2307 is also installed outside the filtering box 21. Two gears of a synchronous gear set A2308 are respectively installed on the output shaft of the first motor 2307 and one of the roller shafts 2301. In order to discharge the granular impurities in the slag filtering tank 2102, when the first motor 2307 works, the roller shaft 2301 can be driven to rotate through the cooperation of the synchronous gear set A2308. When the conveyor belt 2302 on the roller shaft 2301 runs, the mesh plate 2303 arranged thereon can push the granular impurities at the bottom of the slag filtering tank 2102 into the slag discharging groove 2309. And a hopper 2310 is rotatably installed in the slag discharging groove 2309. The hopper 2310 is fan-shaped. A material groove 2311 is opened at the top of the hopper 2310. A blanking groove 2312 adapted to the hopper 2310 is also installed on one side of the slag discharging groove 2309. A trigger gear 2314 is also installed on the central axis of the hopper 2310. One idler gear 2315 is meshed on each side of the trigger gear 2314. The idler gear 2315 is arranged in four equal parts. Tooth teeth are arranged in two symmetric equal parts, and the other two symmetric equal parts are smooth surfaces. Two gears of a synchronous gear set B2316 are respectively installed on the central axes of the two idler gears 2315. A second motor 2317 is also installed on the central axis of one of the gears in the synchronous gear set B2316. A collection tank 2313 is also installed on the side of the end of the filtering box 21. The collection tank 2313 is arranged below the two blanking grooves 2312. When the second motor 2317 works, under the cooperation of the synchronous gear set B2316, the two idler gears 2315 can be pushed to rotate synchronously and in opposite directions. The tooth tooth areas thereon will alternately cooperate with the middle trigger gear 2314 to push the hopper 2310 to rotate. And a material groove 2311 is opened on the hopper 2310. The granular impurities entering the slag discharging groove 2309 will enter the material groove 2311. When the hopper 2310 flips, the granular impurities in the material groove 2311 will be sent into the blanking groove 2312. The granular impurities can be discharged and collected in the collection tank 2313 through the blanking groove 2312 for further treatment. And the treated sewage entering the slag filtering tank 2102 can be discharged downward. In order to further simplify the subsequent sewage treatment steps, a medicine pool can be directly arranged below the filtering box 21.The sewage after filter residue treatment can be directly released into the medicine pool for biochemical reaction, so as to remove the pollutants in the sewage.

[0040] A sewage treatment and filter residue removal method is applied to a sewage treatment and filter residue removal device, including:

[0041] S1: Discharge the sewage into the diversion component 1 through the diversion trough 101, and through the diversion channel formed between the outer plate 102 and the inner inclined plate 103, divert the sewage to the two filter residue troughs 2102 respectively. Filter the solid particles in the sewage through the filter residue filter screen 2103. Then, since the filter residue trough 2102 is connected to the bottom of the slag discharge trough 2309, with the cooperation of the mesh plate 2303, the solid particles can be pushed into the slag discharge trough 2309. There is a material trough 2311 on the hopper 2310, and the particulate impurities entering the slag discharge trough 2309 will enter the material trough 2311. When the hopper 2310 flips, the particulate impurities in the material trough 2311 will be sent into the blanking trough 2312, and the particulate impurities can be discharged and collected in the collection trough 2313 for further treatment through the blanking trough 2312;

[0042] S2: When the power motor 2214 drives the propeller 2215 to rotate, thrust can be generated, which can push the support frame 2212 and the cleaning roller 2201 to slide forward. When reaching the end of the guide groove 2205, the output shaft of the cleaning roller 2201 will slide along the guide groove 2205 to the other side. At this time, the rolling gear 2207 will engage with the rack 2206 on the other side, and the power motor 2214 will adjust the direction of the propeller 2215 to achieve automatic commutation, so as to be able to push the cleaning roller 2201 to roll back and forth along the filter residue filter screen 2103. The bristles 2202 arranged on the surface of the cleaning roller 2201 can penetrate the filter residue filter screen 2103 to push out the particulate impurities in the mesh holes, facilitating the dredging of the filter residue filter screen 2103.

[0043] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0044] The implementation principle of a sewage treatment and filtration slag removal device in an embodiment of the present invention is as follows: During operation, sewage is first discharged into the diversion trough 101. Since a diversion channel is formed between the outer side plate 102 and the inner inclined plate 103, when the sewage is released downward in the diversion trough 101, the sewage can be diverted to the two slag filtration troughs 2102 respectively with the cooperation of the diversion channel. The sewage is subjected to slag filtration treatment in the slag filtration troughs 2102. Moreover, a buffer plate 104 is installed on the top of the two inner inclined plates 103, which can buffer the sewage and prevent excessive impact force of the sewage from damaging the equipment. A slag removal filter screen 2103 is arranged between the slag filtration trough 2102 and the sewage treatment pool 2101, which can filter the sewage and leave the particulate impurities in the slag filtration trough 2102. In order to discharge the particulate impurities in the slag filtration trough 2102, when the first motor 2307 works, the roller shaft 2301 can be driven to rotate through the cooperation of the synchronous gear set A 2308. When the conveyor belt 2302 on the roller shaft 2301 runs, the mesh plate 2303 arranged thereon can push the particulate impurities at the bottom of the slag filtration trough 2102 into the slag discharge trough 2309. When the second motor 2317 works, with the cooperation of the synchronous gear set B 2316, two special-shaped gears 2315 can be pushed to rotate synchronously in opposite directions, and the tooth regions thereon will alternately cooperate with the middle trigger gear 2314 to push the hopper 2310 to rotate. A material trough 2311 is opened on the hopper 2310, and the particulate impurities entering the slag discharge trough 2309 will enter the material trough 2311. When the hopper 2310 turns over, the particulate impurities in the material trough 2311 will be sent into the blanking trough 2312, and the particulate impurities can be discharged and collected in the collection trough 2313 through the blanking trough 2312 for further treatment;

[0045] In addition, during the filtration process, particulate impurities will clog on the slag removal filter screen 2103. When the power motor 2214 drives the propeller 2215 to rotate, a thrust can be generated, which can push the support frame 2212 and the cleaning roller 2201 forward. When reaching the end of the guide groove 2205, the output shaft of the cleaning roller 2201 will slide along the guide groove 2205 to the other side. At this time, the rolling gear 2207 will engage with the rack 2206 on the other side, and the power motor 2214 will adjust the direction of the propeller 2215 to achieve automatic commutation. The output shaft of the cleaning roller 2201 can be restricted to slide in the guide groove 2205, and the guide groove 2205 is set as a parallelogram. When the cleaning roller 2201 slides in the corresponding groove of the guide groove 2205, the rolling gear 2207 thereon will engage with the rack 2206 on the closer side. As the rolling gear 2207 rolls forward on the rack 2206, the cleaning roller 2201 can be pushed to keep rotating forward, and the bristles arranged on the surface of the cleaning roller 2201 can penetrate the slag removal filter screen 2103 to push out the particulate impurities in the mesh holes, facilitating the dredging of the slag removal filter screen 2103, and it is simple and easy to operate.

[0046] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention, which are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment filtering and slag removal device, characterized in that: The filter component (2) comprises a drainage component (1) and a filter component (2), wherein the filter component (2) comprises a filter box (21) arranged below the drainage component (1), a sewage treatment tank (2101) is arranged in the middle of the filter box (21), two filter residue troughs (2102) are arranged on both sides of the sewage treatment tank (2101), and a slag removal filter screen (2103) is installed in a hole dug on a box plate between the sewage treatment tank (2101) and the filter residue trough (2102), two filter screen dredging components (22) are also installed in the sewage treatment tank (2101), and a slag removal component (23) is installed in the filter residue trough (2102); The filter screen dredging component (22) comprises a cleaning roller (2201), the surface of which is provided with a plurality of brushes (2202) that cooperate to be inserted into the mesh of the slag removal filter screen (2103) and are used to clean granular impurities in the mesh of the slag removal filter screen (2103); The slag discharge component (23) comprises rollers (2301) rotatably mounted at both ends of the filter residue trough (2102); a conveyor belt (2302) is mounted on the rollers (2301) for transmission; a plurality of mesh plates (2303) for pushing granular impurities are mounted on the conveyor belt (2302); a slag discharge trough (2309) is also provided at a position close to the end of the filter residue trough (2102); the filter residue trough (2102) is connected to the bottom of the slag discharge trough (2309); and the mesh plates (2303) can push granular impurities into the slag discharge trough (2309) when sliding; The filter dredging component (22) further comprises an auxiliary groove (2203) arranged above the cleaning roller (2201); a cover plate (2204) is arranged at the top of the auxiliary groove (2203); and a parallelogram guide groove (2205) is provided at the bottom of the cover plate (2204) for cooperating with and limiting the sliding of the central axis of the cleaning roller (2201); Racks (2206) are also installed on the two long inner walls of the auxiliary groove (2203), and a rolling gear (2207) is mounted on the central axis of the cleaning roller (2201). The rolling gear (2207) is meshed with the rack (2206) on the adjacent side. A magnetic guide strip (2208) is also arranged below the rack (2206). A support seat (2209) is also mounted on the central axis below the rolling gear (2207). The support seat (2209) faces the sides of the two magnetic guide strips (2208). Strong magnet blocks (2211) are installed on the support base (2209), and support rollers (2210) are installed at the four corners of the support base (2209); a support frame (2212) is also installed on the bottom of the support base (2209), the support frame (2212) extends into the sewage treatment pool (2101), and a rotating base (2213) is also installed on the support frame (2212), a power motor (2214) is fixedly installed on the rotating base (2213), and a propeller (2215) is mounted on the output shaft of the power motor (2214).

2. A sewage treatment filtering and slag removal device according to claim 1, characterized in that: A pulley (2304) is also installed on the end of the output shaft of the roller shaft (2301) extending outside the filter box (21), and the same belt (2305) is provided on the two pulleys (2304) for transmission. A first motor (2307) is also installed outside the filter box (21), and two gears of a synchronous gear set A (2308) are respectively installed on the first motor (2307) and the output shaft of one of the roller shafts (2301).

3. A sewage treatment filtering and slag removal device according to claim 2, characterized in that: A hopper (2310) is also rotatably mounted in the slag discharge trough (2309); the hopper (2310) is arranged in a fan shape; a trough (2311) is provided on the top of the hopper (2310); a lower trough (2312) adapted to the hopper (2310) is also mounted on one side of the slag discharge trough (2309); a collecting trough (2313) is also mounted on the side of the end of the filter box (21); the collecting trough (2313) is arranged below the two lower troughs (2312).

4. A sewage treatment filtering and slag removal device according to claim 3, characterized in that: A trigger gear (2314) is also mounted on the central axis of the hopper (2310), and a special-shaped gear (2315) is meshed on both sides of the trigger gear (2314). The special-shaped gear (2315) is divided into four equal parts, two symmetrical parts of which are provided with teeth, and the other two symmetrical parts are provided with a smooth surface.

5. A sewage treatment filtering and slag removal device according to claim 4, characterized in that: Two gears of a synchronous gear set B (2316) are respectively mounted on the central shafts of the two special-shaped gears (2315), and a second motor (2317) is also mounted on the central shaft of one of the gears in the synchronous gear set B (2316).

6. A sewage treatment filtering and slag removal device according to claim 5, characterized in that: The drainage component (1) comprises a drainage groove (101), and a flow diversion channel composed of an outer plate (102) and an inner inclined plate (103) is installed below the drainage groove (101), and the flow diversion channel is butt-jointed to the two filter residue grooves (2102).

7. A sewage treatment filtering and slag removal device according to claim 6, characterized in that: The same buffer plate (104) is also installed on the top of the two inner inclined plates (103), and coarse filter screens (105) are installed at both edges of the buffer plate (104). Side sealing plates (106) are also installed on the front and rear sides of the drainage component (1).

8. A method for filtering and removing slag in sewage treatment, applied to a device for filtering and removing slag in sewage treatment as claimed in claim 7, characterized in that: include: S1: The sewage is discharged into the drainage component (1) through the drainage trough (101), and the sewage is respectively drained into the two filter residue troughs (2102) through the diversion channel formed between the outer plate (102) and the inner inclined plate (103), and the solid particles in the sewage are filtered through the residue removal filter (2103). Then, since the filter residue trough (2102) is connected to the bottom of the residue discharge trough (2309), the solid particles can be removed by the mesh plate (2303). The particles are pushed into the slag discharge trough (2309), and a material trough (2311) is provided on the hopper (2310). The particle impurities entering the slag discharge trough (2309) will enter the material trough (2311). When the hopper (2310) is turned over, the particle impurities in the material trough (2311) will be sent to the lower material trough (2312). The particle impurities can be discharged into the collection trough (2313) through the lower material trough (2312) for collection and further processing; S2: When the power motor (2214) drives the propeller (2215) to rotate, thrust is generated, which can push the support frame (2212) and the cleaning roller (2201) to slide forward. When reaching the end of the guide groove (2205), the output shaft of the cleaning roller (2201) will slide along the guide groove (2205) to the other side. At this time, the rolling gear (2207) will engage with the rack (2206) on the other side, and the power motor (2214) will adjust the direction of the propeller (2215) to achieve automatic reversal, thereby pushing the cleaning roller (2201) to roll back and forth along the slag removal filter (2103). The bristles (2202) provided on the surface of the cleaning roller (2201) can penetrate the slag removal filter (2103) and push out the granular impurities in the mesh, thereby facilitating the dredging of the slag removal filter (2103).

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