Filtering and deslagging device and method for sewage treatment

Abstract

The invention discloses a sewage treatment filtering and deslagging device and method, and relates to the technical field of sewage treatment.The sewage treatment filtering and deslagging device comprises a drainage component and a filtering component, the filtering component comprises a filtering box arranged below the drainage component, a sewage treatment pond is arranged in the middle of the filtering box, and two residue filtering grooves are further formed in the two sides of the sewage treatment pond; the sewage treatment device comprises a sewage treatment tank, a residue filtering tank is arranged in the sewage treatment tank, a hole is dug in a box plate between the sewage treatment tank and the residue filtering tank, a residue removing filter screen is mounted in the hole, two filter screen dredging components are further assembled in the sewage treatment tank, and a residue discharging component is assembled in the residue filtering tank. When particle impurities block the slag removal filter screen, the filter screen dredging assembly can push the cleaning roller to continuously roll back and forth, the bristles arranged on the cleaning roller can penetrate through the slag removal filter screen to push out and clean the particle impurities in the slag removal filter screen during rolling, and operation is easy 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 deslagging device and method. Background Art

[0002] With the development and progress of society, there are more and more industrial, agricultural and domestic sewage. When treating sewage, sewage treatment equipment is generally used to treat sewage so that the sewage can meet the water quality requirements for discharge into a certain water body or reuse. However, common sewage is usually mixed with granular impurities. In the process of sewage treatment, the granular impurities need to be separated from the sewage first.

[0003] In the prior art, a filter is generally used to perform preliminary filtration of sewage to filter out particulate impurities in the sewage, which is convenient for subsequent sewage treatment. However, particulate impurities are easy to adhere to or clog the filter during filtration. If the filter is not cleaned for a long time, it will cause excessive clogging or impurities to clump, resulting in low flow efficiency. It is necessary to stop the machine, take it out, and clean it, 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 deslagging device and method. Summary of the invention

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

[0005] The present invention provides a sewage treatment filtering and slag removal device and method using the following technical solutions: A sewage treatment filtering and slag removal device comprises: a drainage component and a filtering component, the filtering component comprises a filter box arranged below the drainage component, a sewage treatment pool is arranged in the middle of the filter box, two filter residue tanks are arranged on both sides of the sewage treatment pool, and a slag removal filter screen is installed with holes dug on the box plate between the sewage treatment pool and the filter residue tank, two filter screen dredging components are also installed in the sewage treatment pool, and a slag removal component is installed in the filter residue tank; The filter screen dredging component includes a cleaning roller, and a plurality of bristles are arranged on the surface of the cleaning roller to be inserted into the mesh of the slag removal filter screen, so as to clean the granular impurities in the mesh of the slag removal filter screen; The slag discharge component includes rollers rotatably installed at both ends of the filter slag tank, a conveyor belt is installed on the rollers for transmission, and a plurality of mesh plates for pushing granular impurities are installed on the conveyor belt. A slag discharge groove is also opened near the end of the filter slag tank, and the filter slag groove is connected to the bottom of the slag discharge groove. When the mesh plates slide, the granular impurities can be pushed into the slag discharge groove; Among them, the filter dredging component also includes an auxiliary groove arranged above the cleaning roller, a cover plate is arranged on the top of the auxiliary groove, and a parallelogram guide groove is opened at the bottom of the cover plate to cooperate with and limit the sliding of the central axis of the cleaning roller.

[0006] Preferably, racks are installed on the two long inner walls of the auxiliary groove, and a rolling gear is mounted on the central axis of the cleaning roller. The rolling gear is meshed with the rack on the adjacent side, and a magnetic guide bar is arranged below the rack. A support seat is also mounted on the central axis below the rolling gear, and strong magnet blocks are installed on the sides of the support seat facing the two magnetic guide bars, and support rollers are installed at the four corners of the support seat.

[0007] Preferably, a support frame is installed on the bottom of the support seat, the support frame extends into the sewage treatment tank, and a rotating seat is installed on the support frame, a power motor is fixedly installed on the rotating seat, and a propeller is mounted on the output shaft of the power motor.

[0008] Preferably, a pulley is installed on the end of the output shaft of the roller extending outside the filter box, and the same belt is transmitted on the two pulleys. A first motor is also installed on the outside of the filter box, and two gears of a synchronous gear set A are respectively installed on the first motor and the output shaft of one of the rollers.

[0009] Preferably, a hopper is rotatably installed in the slag discharge trough, the hopper is fan-shaped, a trough is opened on the top of the hopper, and a lower trough matched with the hopper is installed on one side of the slag discharge trough, and a collecting trough is also installed on the side of the filtering end, and the collecting trough is arranged below the two lower troughs.

[0010] Preferably, a trigger gear is also installed on the central axis of the hopper, and a special-shaped gear is meshed on both sides of the trigger gear. The special-shaped gear is divided into four equal parts, two symmetrical areas are provided with teeth, and the other two symmetrical areas are provided with smooth surfaces.

[0011] Preferably, two gears of the synchronous gear set B are respectively mounted on the central shafts of the two special-shaped gears, and a second motor is also mounted on the central shaft of one of the gears in the synchronous gear set B.

[0012] Preferably, the drainage component includes a drainage groove, and a diversion channel composed of an outer plate and an inner inclined plate is installed below the drainage groove, and the diversion channel is connected to the two filter residue grooves.

[0013] Preferably, a same buffer plate is installed on the top 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.

[0014] A sewage treatment filtering and deslagging method, applied to a sewage treatment filtering and deslagging device, comprises: S1: The sewage is discharged into the drainage component through the drainage trough, and the sewage is drained into two filter residue troughs through the diversion channel formed between the outer plate and the inner inclined plate. The solid particles in the sewage are filtered through the slag removal filter. Then, since the filter residue trough is connected to the bottom of the slag discharge trough, the solid particles can be pushed into the slag discharge trough with the cooperation of the mesh plate. The hopper is provided with a trough, and the granular impurities entering the slag discharge trough will enter the trough. When the hopper is turned over, the granular impurities in the trough will be sent to the lower trough. The granular impurities can be discharged into the collection trough through the lower trough for further processing; S2: When the power motor drives the propeller to rotate, it can generate thrust, which can push the support frame and the cleaning roller to slide forward. When it reaches 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 reversing, thereby pushing the cleaning roller to roll back and forth along the slag removal filter. The bristles arranged on the surface of the cleaning roller can penetrate the slag removal filter and push out the granular impurities in the mesh, making it easier to dredge the slag removal filter.

[0015] In summary, the present invention includes the following beneficial technical effects: 1. In the present application, the sewage in the filter residue tank can be filtered through the residue removal filter, and the particulate impurities will be retained in the filter residue tank. When the particulate impurities are blocked on the residue removal filter, the filter 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 residue removal filter and push out the particulate impurities therein to clean them out. The operation is simple and convenient.

[0016] 2. In the present application, a guide groove is provided at the bottom of the cover plate, and the guide groove is provided 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 provided on the output shaft of the cleaning roller. When the rolling gear cooperates with the corresponding rack, the cleaning roller can be driven to rotate. The strong magnet block provided on the support seat can generate a strong suction force with the magnetic guide bar, thereby helping to stabilize the cleaning roller and facilitating stable operation.

[0017] 3. In the present 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 reversing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a disassembled schematic diagram of the drainage component of the present invention; Figure 3 is a cross-sectional schematic diagram of the filter component of the present invention; Figure 4 It is a partial structural schematic diagram of the slag discharge component of the present invention; Figure 5 It is a disassembled schematic diagram of the filter dredging component of the present invention; Figure 6 It is a structural schematic diagram of the cleaning roller of the present invention; Figure 7 It is a structural schematic diagram of the hopper of the present invention Figure 8 The present invention Figure 3 Schematic diagram of a cross-section.

[0019] Explanation of reference numerals: 1. drainage component; 101. drainage groove; 102. outer plate; 103. inner inclined plate; 104. buffer plate; 105. coarse filter screen; 106. side sealing plate; 2. filter component; 21. filter box; 2101. sewage treatment tank; 2102. filter residue groove; 2103. slag removal filter screen; 22. filter screen dredging component; 2201. cleaning roller; 2202. brush; 2203. auxiliary groove; 2204. cover plate; 2205. guide groove; 2206. rack; 2207. rolling gear; 2208. magnetic guide strip; 2209. support seat; 2210. support roller Wheel; 2211, strong magnet block; 2212, support frame; 2213, rotating seat; 2214, power motor; 2215, propeller; 23, slag discharge component; 2301, roller; 2302, conveyor belt; 2303, mesh plate; 2304, pulley; 2305, belt; 2307, first motor; 2308, synchronous gear set A; 2309, slag discharge chute; 2310, hopper; 2311, chute; 2312, discharge chute; 2313, collecting chute; 2314, trigger gear; 2315, special-shaped gear; 2316, synchronous gear set B; 2317, second motor. DETAILED DESCRIPTION

[0020] The following is combined with Figures 1 to 8 The present invention is described in further detail.

[0021] It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any size is only illustrative and not restrictive. In addition, the same reference symbol is used for the same structure, element or accessory appearing in more than two figures to reflect similar features. Embodiment 1

[0022] The present invention discloses a sewage treatment filtering and slag removal device. Figures 1 to 8 A sewage treatment filtering and slag removal device comprises a drainage component 1 and a filtering component 2, wherein the filtering 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 grooves 2102 are arranged on both sides of the sewage treatment tank 2101, and a slag removal filter 2103 is installed with holes on the box plate between the sewage treatment tank 2101 and the filter residue groove 2102, two filter mesh dredging components 22 are also installed in the sewage treatment tank 2101, and a slag removal component 23 is installed in the filter residue groove 2102, the drainage component 1 comprises a drainage groove 101, and a diversion channel composed of an outer plate 102 and an inner inclined plate 103 is installed below the drainage groove 101, and the diversion channel 2103 is installed below the drainage groove 101. The channel is butted against two filter residue troughs 2102, and a same buffer plate 104 is installed on the top of the two inner inclined plates 103. Coarse filter screens 105 are installed at both edges of the buffer plate 104, and side sealing plates 106 are 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 trough 101. Since a diversion channel is formed between the outer plate 102 and the inner inclined plate 103, the sewage can be drained into the two filter residue troughs 2102 respectively, and the sewage can be subjected to filter residue treatment in the filter residue trough 2102. Buffer plates 104 are also installed on the top of the two inner inclined plates 103 to buffer the sewage and avoid excessive impact force of the sewage to damage the equipment.

[0023] Reference Figure 3 , 56. The filter dredging component 22 includes a cleaning roller 2201. The surface of the cleaning roller 2201 is provided with a plurality of bristles 2202 that fit into the mesh of the slag removal filter 2103 and are used to clean the granular impurities in the mesh of the slag removal filter 2103. The filter dredging component 22 also includes an auxiliary groove 2203 arranged above the cleaning roller 2201. A cover plate 2204 is arranged on the top of the auxiliary groove 2203. A parallelogram guide groove 2205 that fits to limit the sliding of the central axis of the cleaning roller 2201 is provided at the bottom of the cover plate 2204. Racks 2206 are also installed on the two long inner walls of the auxiliary groove 2203. A rolling gear 2207 is installed 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 provided below the rack 2206. A support seat 2209 is also installed 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 guide strips 2208, and the four corners of the support seat 2209 are Support rollers 2210 are installed at each of the cleaning rollers 2201. When working, 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 to a parallelogram. When the cleaning roller 2201 slides in the groove corresponding to the guide groove 2205, the rolling gear 2207 thereon will mesh with the rack 2206 close to one side. As the rolling gear 2207 rolls forward on the rack 2206, it can push the cleaning roller 2201 to keep rotating forward, and the bristles set on the surface of the cleaning roller 2201 will It can penetrate the slag removal filter 2103 and push out the granular impurities in the mesh, which is convenient for unclogging the slag removal filter 2103. It is simple and easy to operate. In addition, it keeps the cleaning roller 2201 stable during operation. A support seat 2209 is also mounted on the output shaft of the cleaning roller 2201. The strong magnet block 2211 arranged on the support seat 2209 can generate a strong suction force with the magnetic guide bar 2208 to maintain stability, and the support rollers 2210 arranged at the four corners of the support seat 2209 can roll forward on the magnetic guide bar 2208.

[0024] Reference Figure 5 , 6A support frame 2212 is also installed on the bottom of the support seat 2209, and the support frame 2212 extends into the sewage treatment tank 2101, and a rotating seat 2213 is also installed on the support frame 2212, and a power motor 2214 is fixedly installed on the rotating seat 2213, and a propeller 2215 is set on the output shaft of the power motor 2214. In order to further push the cleaning roller 2201 to continuously move forward and reverse at the end position, a rotating seat 2213 is installed on the support frame 2212. There is a power motor 2214. When the power motor 2214 drives the propeller 2215 to rotate, it can generate thrust, 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 reversing. Embodiment 2

[0025] Reference Figure 3 , 47. The slag discharge component 23 includes a roller shaft 2301 rotatably installed at both ends of the filter residue tank 2102, a conveyor belt 2302 is installed on the roller shaft 2301 for transmission, and a plurality of mesh plates 2303 for pushing granular impurities are installed on the conveyor belt 2302, a slag discharge tank 2309 is also provided near the end of the filter residue tank 2102, the filter residue tank 2102 is communicated with the bottom of the slag discharge tank 2309, and the mesh plate 2303 can push the granular impurities into the slag discharge tank 2309 when sliding, and a pulley 2304 is installed on the end of the output shaft of the roller shaft 2301 extending to the outside of the filter box 21, and the same belt 2305 is installed on the two pulleys 2304 for transmission, and a first motor 2307 is also installed on the outside of the filter box 21. Two gears of a synchronous gear set A2308 are respectively installed on the output shafts of the motor 2307 and one of the roller shafts 2301. In order to discharge the particulate impurities in the filter residue trough 2102, when the first motor 2307 is working, 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 is running, the mesh plate 2303 arranged thereon can push the particulate impurities at the bottom of the filter residue trough 2102 into the slag discharge trough 2309, and a hopper 2310 is also rotatably installed in the slag discharge trough 2309. The hopper 2310 is arranged in a fan shape, and a trough 2311 is opened on the top of the hopper 2310, and a discharge port matched with the hopper 2310 is also installed on one side of the slag discharge trough 2309. 2312, a trigger gear 2314 is also installed 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 parts, two symmetrical parts are provided with teeth, and the other two symmetrical parts are provided with smooth surfaces. Two gears of a synchronous gear set B2316 are respectively installed on the central axis of the two special-shaped gears 2315, and a second motor 2317 is also installed on the central axis of one of the gears in the synchronous gear set B2316. A collecting trough 2313 is also installed on the side of the end of the filter box 21, and the collecting trough 2313 is arranged below the two feeding troughs 2312. When the second motor 2317 is working, the synchronous gear set B231 6, the two special-shaped gears 2315 can be pushed to rotate synchronously in the opposite direction, and the tooth areas on them will alternately cooperate with the middle trigger gear 2314 to push the hopper 2310 to rotate, and the hopper 2310 is provided with a material trough 2311, and the granular impurities entering the slag discharge trough 2309 will enter the material trough 2311. When the hopper 2310 is turned over, the granular impurities in the material trough 2311 will be sent to the lower material trough 2312. Through the lower material trough 2312, the granular impurities can be discharged into the collecting trough 2313 for further treatment, and the treated sewage entering the filter residue trough 2102 can be discharged downward. In order to further simplify the subsequent sewage treatment steps, a medicine pool can be directly provided below the filter box 21.The wastewater treated with filter residue can be directly released into the medicine pool for biochemical reaction, thereby removing the pollutants in the wastewater.

[0026] A sewage treatment filtering and deslagging method, applied to a sewage treatment filtering and deslagging device, comprises: 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 pushed into the residue discharge trough 2309 with the cooperation of the mesh plate 2303, and the hopper 2310 is provided with a material trough 2311, and the particulate impurities entering the residue discharge trough 2309 will enter the material trough 2311. When the hopper 2310 is turned over, the particulate impurities in the material trough 2311 will be sent to the lower material trough 2312, and the particulate impurities can be discharged into the collecting trough 2313 through the lower material trough 2312 for collection and further treatment; S2: When the power motor 2214 drives the propeller 2215 to rotate, thrust can be generated to 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 reversing, thereby pushing the cleaning roller 2201 to roll back and forth along the slag removal filter 2103. The bristles 2202 arranged 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 dredging the slag removal filter 2103.

[0027] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] The implementation principle of a sewage treatment filtering and deslagging device according to an embodiment of the present invention is as follows: when working, the sewage is first discharged into the drainage trough 101. Since a diversion channel is formed between the outer plate 102 and the inner inclined plate 103, when the drainage trough 101 releases the sewage downward, the sewage can be respectively drained into the two filter residue troughs 2102 with the cooperation of the diversion channel, and the sewage is subjected to filter residue treatment in the filter residue trough 2102. In addition, a buffer plate 104 is installed on the top of the two inner inclined plates 103 to buffer the sewage and prevent the sewage from being damaged by excessive impact force and causing damage to the equipment. A deslagging filter 2103 is arranged between the filter residue trough 2102 and the sewage treatment tank 2101 to filter the sewage and leave particulate impurities in the filter residue trough 2102. In order to discharge the particulate impurities in the filter residue trough 2102, when the first motor 2307 is working, a synchronous gear can be used to The cooperation of group A2308 drives the roller 2301 to rotate. When the conveyor belt 2302 on the roller 2301 is running, the mesh plate 2303 arranged thereon can push the granular impurities at the bottom of the filter residue trough 2102 into the slag discharge trough 2309. When the second motor 2317 is working, with the cooperation of the synchronous gear group B2316, the two special-shaped gears 2315 can be pushed to rotate synchronously in the opposite direction. The tooth areas thereon will alternately cooperate with the trigger gear 2314 in the middle to push the hopper 2310 to rotate. The hopper 2310 is provided with a material trough 2311. The granular impurities entering the slag discharge trough 2309 will enter the material trough 2311. When the hopper 2310 is turned over, the granular impurities in the material trough 2311 will be sent to the lower material trough 2312. Through the lower material trough 2312, the granular impurities can be discharged into the collecting trough 2313 for collection and further processing. In addition, during the filtering process, particulate impurities will be blocked on the slag removal filter 2103. When the power motor 2214 drives the propeller 2215 to rotate, it can generate thrust, 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 mesh with the rack 2206 on the other side, and the power motor 2214 will adjust the direction of the propeller 2215 to achieve automatic reversing, and the output shaft of the cleaning roller 2201 will slide to the other side along the guide groove 2205. The output shaft 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 groove corresponding to the guide groove 2205, the rolling gear 2207 thereon will engage with the rack 2206 close to one 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 set on the surface of the cleaning roller 2201 can penetrate the slag removal filter 2103 and push out the granular impurities in the mesh, which is convenient for unblocking the slag removal filter 2103 and is simple and easy to operate.

[0029] The above shows and describes 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. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit 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. 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).

2. A sewage treatment filtering and slag removal device according to claim 1, characterized in that: 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). Strong magnet blocks (2211) are installed on the sides of the support seat (2209) facing the two magnetic guide strips (2208), and support rollers (2210) are installed at the four corners of the support seat (2209).

3. A sewage treatment filtering and slag removal device according to claim 2, characterized in that: A support frame (2212) is also installed on the bottom of the support seat (2209), the support frame (2212) extends into the sewage treatment tank (2101), and a rotating seat (2213) is also installed on the support frame (2212), a power motor (2214) is fixedly installed on the rotating seat (2213), and a propeller (2215) is mounted on the output shaft of the power motor (2214).

4. 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).

5. A sewage treatment filtering and slag removal device according to claim 1, 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).

6. A sewage treatment filtering and slag removal device according to claim 5, 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.

7. A sewage treatment filtering and slag removal device according to claim 6, 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).

8. A sewage treatment filtering and slag removal device according to claim 1, 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).

9. A sewage treatment filtering and slag removal device according to claim 8, 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).

10. 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 any one of claims 1 to 9, 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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