Drum filter device for sewage treatment

Abstract

This invention discloses a drum filter device for wastewater treatment, including a support frame and multi-stage filter drums connected to the support frame. The support frame includes a support base and a drum support structure rotatably connected to the support base. The multi-stage filter drums include multiple split filter drums with openings facing left, and each split filter drum is equipped with a stain cleaning mechanism and a sludge discharge mechanism. The drum support structure includes multiple drum support shells with openings facing right and arranged coaxially, and each drum support shell is cylindrical. This device has a compact structure and occupies little space. This device can efficiently separate and filter impurity particles of different sizes in wastewater. This device can timely and synchronously transport the filtered and intercepted impurities out, improving overall working efficiency. The stain cleaning mechanism regularly cleans the inside of the split filter drums, preventing excessive stains from accumulating inside the split filter drums and causing blockages, thus affecting the filtration effect.

Description

Technical Field

[0001] This invention relates to the field of wastewater filtration and treatment technology, specifically to a drum filter device for wastewater treatment. Background Technology

[0002] Domestic sewage mainly refers to various types of wastewater generated during urban life. This wastewater often contains a large number of impurities and particles of varying sizes. As cities continue to develop, the amount of wastewater generated is also increasing.

[0003] In the process of sewage treatment, it is necessary to screen and separate the garbage and impurities in the sewage. The current method is to use vibrating screens to filter the sewage. However, while existing sewage filtration devices are filtering sewage, a lot of large garbage will be mixed in with the sewage. During filtration, the garbage may remain on the surface of the filtration device and cannot be cleaned. Over time, this will cause blockage inside the device, reduce working efficiency, and in severe cases, damage the device and cause property loss. Summary of the Invention

[0004] The purpose of this invention is to provide a drum filter device for sewage treatment, which can efficiently separate and filter impurities of different sizes in sewage, and the device also has a self-cleaning function.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A drum filter device for wastewater treatment includes a support frame and multi-stage filter drums connected to the support frame.

[0007] The support frame includes a support base and a roller support structure rotatably connected to the support base;

[0008] The multi-stage filter drum includes multiple split filter drums with openings facing left. When the split filter drum is working, the angle between its axis and the horizontal line is in the range of 0 to 20°. The split filter drum is equipped with a stain cleaning mechanism and a slag discharge mechanism for cleaning the stains remaining inside the split filter drum.

[0009] The roller support structure includes multiple roller support shells arranged coaxially with openings facing right, and the roller support shells are cylindrical;

[0010] A rotating fitting ring is fixedly provided on the inner side of the drum support housing, and a rotating support ring is rotatably fitted on the rotating fitting ring. The left end of each split filter drum is fixedly connected to the rotating support ring on the inner side of the corresponding drum support structure.

[0011] The split filter drum has a tapered section at the end away from the drum support housing, and an end filter cylinder is fixedly provided at the end of the split filter drum away from the drum support housing.

[0012] A first driven gear ring is fixedly provided at the left end of the split filter drum. A first motor is fixedly provided on the inner side of the drum support housing near the upper side. A first drive gear is fixedly provided on the output shaft of the first motor. The first drive gear is meshed with the first driven gear ring.

[0013] The slag discharge mechanism includes a U-shaped slag discharge trough located inside the split filter drum. The U-shaped slag discharge trough is a shell structure with its opening facing upwards. The U-shaped slag discharge trough is located inside the split filter drum near its inner wall and extends along the axis of the split filter drum. One end of the U-shaped slag discharge trough near the drum support shell is fixedly connected to the drum support shell, and the other end of the U-shaped slag discharge trough is connected to a slag discharge pipe. The slag discharge pipe extends to the end of the end filter cylinder away from the drum support shell and extends out of the end filter cylinder.

[0014] The end filter cartridge is provided with a slag discharge pipe support plate on the side away from the drum support shell. The slag discharge pipe is fixedly connected to the slag discharge pipe support plate, and the slag discharge pipe support plate is fixedly connected to the outermost drum support shell through a fixed connecting rod.

[0015] A water inlet distribution housing is fixedly installed on the innermost drum support housing, and the other end of the water inlet distribution housing extends into the innermost split filter drum. The water inlet distribution housing has multiple drain holes.

[0016] Multiple slag discharge baffles are provided on the inner side wall of the split filter drum. The slag discharge baffles extend along the axial direction of the split filter drum. A slag discharge baffle connecting ring is fixedly provided on each of the left and right ends of the inner side wall of the split filter drum. The two ends of the slag discharge baffle are rotatably connected to the slag discharge baffle connecting ring through a rotating shaft.

[0017] Springs are located on the rotating shafts at both ends of the slag discharge baffle. One end of the torsion spring is fixedly connected to the slag discharge baffle, and the other end of the torsion spring is fixedly connected to the connecting ring of the slag discharge baffle. The torsion spring constraint ensures that the plane of the slag discharge baffle is located on the radial plane of the split filter drum at its position.

[0018] Preferably, the support base includes a support plate, a rotating shaft support plate is fixedly provided on the top of the support plate, the rotating shaft support plate has a rotating shaft mating hole, and a support rotating shaft is fixedly provided on the outermost roller support housing, the support rotating shaft being rotatably connected in the rotating shaft mating hole;

[0019] A drive protective shell is fixedly installed on the shaft support plate at the shaft mating hole. A third motor is fixedly installed inside the drive protective shell. A drive worm is fixedly installed on the output shaft of the third motor. A driven worm wheel is fixedly installed on the support shaft. The drive worm and the driven worm wheel are meshed and connected.

[0020] Preferably, the stain cleaning mechanism includes a cleaning cylinder and a cleaning brush rotatably connected inside the cleaning cylinder. The cleaning cylinder is arranged inside the split filter drum near the top. The cleaning cylinder extends along the axial direction of the split filter drum. The cleaning cylinder is connected to the inner side of the drum support housing through a cleaning mechanism connecting frame.

[0021] The upper side of the cleaning cylinder has a groove, and a cleaning water supply pipe is fixedly installed on the outside of the cleaning cylinder. The cleaning water supply pipe extends along the axial direction of the cleaning cylinder and has multiple cleaning nozzles.

[0022] Note: The stain cleaning mechanism can clean the inner wall of the split filter drum in a timely manner according to the actual situation, so as to avoid excessive stains on the inner wall of the split filter drum and affect the working efficiency.

[0023] Preferably, the cleaning mechanism connecting frame includes a support column fixed to the inner side of the roller support housing near the top position. The support column has a sliding groove, and a sliding block is slidably fitted in the sliding groove. The sliding block has a threaded hole, and a threaded drive rod is threadedly fitted in the threaded hole. The cleaning cylinder is fixedly connected to the sliding block through a fixed connecting rod.

[0024] A second motor for driving the threaded drive rod to rotate is fixed on the support column.

[0025] Note: The cleaning mechanism connecting frame can control the movement of the cleaning cylinder closer to or further away from the inner wall of the split filter drum to adapt to different working conditions.

[0026] Preferably, a cleaning drain housing is fixedly provided on the lower side of the cleaning cylinder, and the interior of the cleaning drain housing is connected to the interior of the cleaning cylinder through multiple drain holes.

[0027] Preferably, an arc-shaped slag discharge constraint baffle is connected to the side of the U-shaped slag discharge trough near the axis of the split filter drum, and the slag discharge constraint baffle is adapted to the curvature of the split filter drum.

[0028] Note: The slag discharge constraint baffle can more effectively collect the impurities filtered and intercepted inside the split filter drum into the U-shaped slag discharge trough, preventing the impurities filtered and intercepted inside the split filter drum from falling onto the adjacent inner split filter drum and causing adverse effects.

[0029] Preferably, a flushing ring is fixedly provided at one end of the U-shaped slag discharge trough near the drum support housing, and multiple flushing nozzles are provided on the side of the flushing ring away from the drum support housing.

[0030] Explanation: The water jets from the flushing nozzles on the flushing ring flush the U-shaped slag discharge trough, quickly removing the impurities that have accumulated inside and preventing excessive buildup of impurities that could have adverse effects.

[0031] Preferably, a slag discharge baffle actuating ring is rotatably fitted on the slag discharge baffle connecting ring. The slag discharge baffle actuating ring is connected to the slag discharge baffle through a drive rod. Both ends of the drive rod are connected to the slag discharge baffle and the slag discharge baffle actuating ring through movable hinges.

[0032] Explanation: The deflection of the slag discharge baffle is controlled by rotating the actuating ring of the slag discharge baffle.

[0033] Preferably, an end slag collection hopper is provided below the end of the end filter cylinder away from the drum support housing, and the end slag collection hopper is fixed on the slag discharge pipe support plate.

[0034] Note: The end slag collection hopper is used to collect small amounts of impurities discharged from the end filter cartridge.

[0035] Preferably, each roller support housing is fixedly equipped with multiple vibration modules.

[0036] Note: The vibration of the vibration module can more thoroughly remove impurities and particles adhering to the inner wall of the split filter drum.

[0037] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structural design and is easy to operate; the device has a compact structure and occupies little space; the device can efficiently separate and filter impurity particles of different sizes in sewage, which is convenient for subsequent classification and treatment; while filtering impurities in sewage, the device can simultaneously and timely transport the filtered and intercepted impurities out, thereby improving the overall working efficiency; and the stain cleaning mechanism regularly cleans the inside of the split filter drum, preventing excessive stains from accumulating inside the split filter drum and causing blockage, which would affect the filtration effect. Attached Figure Description

[0038] Figure 1 This is the front view of the present invention;

[0039] Figure 2 yes Figure 1 The left view;

[0040] Figure 3 yes Figure 1 A top view of

[0041] Figure 4 yes Figure 1 The right view;

[0042] Figure 5 This is a schematic diagram of the stain cleaning mechanism in this invention;

[0043] Figure 6 This is a schematic diagram of the structure of the cleaning mechanism connecting frame in this invention;

[0044] Figure 7 yes Figure 1Partial view A;

[0045] Figure 8 yes Figure 2 Partial view B.

[0046] In the diagram, 10-support frame, 11-support base, 111-support plate, 112-rotating shaft support plate, 113-rotating shaft mating hole, 114-drive protective shell, 12-drum support structure, 121-drum support shell, 122-supporting rotating shaft, 1221-driven worm gear, 123-rotating mating ring, 124-rotating support ring, 125-slag discharge pipe support plate, 126-fixed connecting rod, 13-first motor, 131-first drive gear, 14-third motor, 141-drive worm, 15-vibration module, 20-multi-stage filter drum, 21-split filter drum, 211-first driven gear ring, 212-slag discharge baffle, 213-slag discharge 214-Slag discharge baffle actuation ring, 215-Drive short rod, 22-End filter cylinder, 23-Water inlet distribution shell, 231-Drainage hole, 24-End slag discharge collection hopper, 30-Stain cleaning mechanism, 31-Washing cylinder, 32-Washing brush, 33-Washing mechanism connecting frame, 331-Support column, 332-Sliding mating groove, 333-Sliding block, 3331-Threaded mating hole, 334-Threaded drive rod, 335-Second motor, 34-Washing water supply pipe, 341-Washing nozzle, 35-Washing drainage shell, 40-Slag discharge mechanism, 41-U-shaped slag discharge trough, 411-Slag discharge constraint baffle, 412-Flushing ring, 42-Slag discharge pipe. Detailed Implementation

[0047] The following is combined Figures 1-8 The present invention will be described in detail below. For ease of description, the directions referred to below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of the projection relationship are consistent in all directions: up, down, left, right, front, and back.

[0048] Example:

[0049] A drum filter device for wastewater treatment, such as Figure 1 As shown, it includes a support frame 10 and a multi-stage filter roller 20 connected to the support frame 10;

[0050] like Figure 1 As shown, the support frame 10 includes a support base 11 and a roller support structure 12 rotatably connected to the support base 11;

[0051] like Figure 1 As shown, the support base 11 includes a support plate 111, and a rotating shaft support plate 112 is fixedly mounted on the top of the support plate 111. Figure 2As shown, the rotating shaft support plate 112 has a rotating shaft mating hole 113, and the outermost roller support housing 121 is fixedly provided with a support rotating shaft 122, which is rotatably connected in the rotating shaft mating hole 113.

[0052] like Figure 2 As shown, a drive protective shell 114 is fixedly installed on the shaft support plate 112 at the shaft mating hole 113, and a third motor 14 is fixedly installed inside the drive protective shell 114. Figure 3 As shown, a drive worm 141 is fixedly mounted on the output shaft of the third motor 14, and a driven worm wheel 1221 is fixedly mounted on the support shaft 122. The drive worm 141 and the driven worm wheel 1221 are meshed and connected.

[0053] like Figure 1 , Figure 2 As shown, the multi-stage filter drum 20 includes multiple split filter drums 21 with openings facing left. The split filter drums 21 are equipped with a stain cleaning mechanism 30 for cleaning the stains remaining inside the split filter drums 21 and a slag discharge mechanism 40.

[0054] like Figure 1 As shown, the roller support structure 12 includes multiple roller support housings 121 arranged coaxially with openings facing right. The roller support housings 121 are cylindrical, and multiple vibration modules 15 are fixedly provided on each roller support housing 121.

[0055] A rotating engagement ring 123 is fixedly provided on the inner side of the drum support housing 121, and a rotating support ring 124 is rotatably engaged on the rotating engagement ring 123. The left end of each split filter drum 21 is fixedly connected to the rotating support ring 124 on the inner side of the corresponding drum support structure 12.

[0056] The split filter roller 21 has a tapered section at the end away from the roller support housing 121, and an end filter cylinder 22 is fixedly provided at the end of the split filter roller 21 away from the roller support housing 121.

[0057] like Figure 7 As shown, a first driven gear ring 211 is fixedly provided at the left end of the split filter drum 21, and a first motor 13 is fixedly provided on the inner side of the drum support housing 121 near the upper side. A first drive gear 131 is fixedly provided on the output shaft of the first motor 13, and the first drive gear 131 is meshed with the first driven gear ring 211.

[0058] like Figure 5As shown, the stain cleaning mechanism 30 includes a cleaning cylinder 31 and a cleaning brush 32 rotatably connected inside the cleaning cylinder 31. The cleaning cylinder 31 is arranged inside the split filter drum 21 near the top. The cleaning cylinder 31 extends along the axial direction of the split filter drum 21. The cleaning cylinder 31 is connected to the inside of the drum support housing 121 through the cleaning mechanism connecting frame 33.

[0059] The upper side of the cleaning cylinder 31 has a slot, and a cleaning water supply pipe 34 is fixedly installed on the outer side of the cleaning cylinder 31. The cleaning water supply pipe 34 extends along the axial direction of the cleaning cylinder 31 and has multiple cleaning nozzles 341.

[0060] A cleaning drain housing 35 is fixedly provided on the lower side of the cleaning cylinder 31. The interior of the cleaning drain housing 35 is connected to the interior of the cleaning cylinder 31 through multiple drain holes.

[0061] like Figure 6 As shown, the cleaning mechanism connecting frame 33 includes a support column 331 fixed inside the roller support housing 121 near the top. The support column 331 has a sliding groove 332, and a sliding block 333 is slidably fitted in the sliding groove 332. The sliding block 333 has a threaded hole 3331, and a threaded drive rod 334 is threadedly fitted in the threaded hole 3331. The cleaning cylinder 31 is fixedly connected to the sliding block 333 through a fixed connecting rod.

[0062] like Figure 1 As shown, a second motor 335 for driving the threaded drive rod 334 to rotate is fixed on the support column 331;

[0063] like Figure 2 As shown, the slag discharge mechanism 40 includes a U-shaped slag discharge trough 41 disposed inside the split filter drum 21. The U-shaped slag discharge trough 41 is a shell structure with its opening facing upwards. The U-shaped slag discharge trough 41 is located inside the split filter drum 21 near its inner wall and extends along the axial direction of the split filter drum 21. One end of the U-shaped slag discharge trough 41 near the drum support shell 121 is fixedly connected to the drum support shell 121, and the other end of the U-shaped slag discharge trough 41 is connected to a slag discharge pipe 42. Figure 1 As shown, the slag discharge pipe 42 extends to the end of the end filter cylinder 22 away from the drum support housing 121 and extends out of the end filter cylinder 22;

[0064] like Figure 2 As shown, an arc-shaped slag discharge constraint baffle 411 is connected to the side of the U-shaped slag discharge trough 41 near the axis of the split filter drum 21. The slag discharge constraint baffle 411 is adapted to the curvature of the split filter drum 21.

[0065] like Figure 2As shown, a flushing ring 412 is fixedly provided at one end of the U-shaped slag discharge trough near the drum support housing 121, and multiple flushing nozzles are provided on the side of the flushing ring 412 away from the drum support housing 121.

[0066] like Figure 1 As shown, the end filter cylinder 22 is provided with a slag discharge pipe support plate 125 on the side away from the drum support housing 121. The slag discharge pipe 42 is fixedly connected to the slag discharge pipe support plate 125. The slag discharge pipe support plate 125 is fixedly connected to the outermost drum support housing 121 through a fixed connecting rod 126.

[0067] like Figure 1 As shown, an end slag collection hopper 24 is provided below the end of the end filter cylinder 22 away from the drum support housing 121, and the end slag collection hopper 24 is fixed on the slag discharge pipe support plate 125.

[0068] like Figure 2 As shown, a water inlet distribution housing 23 is fixedly provided on the innermost roller support housing 121, and the other end of the water inlet distribution housing 23 extends into the innermost split filter roller 21. The water inlet distribution housing 23 has multiple drain holes 231.

[0069] like Figure 1 As shown, multiple slag discharge baffles 212 are provided on the inner wall of the split filter drum 21. The slag discharge baffles 212 extend along the axial direction of the split filter drum 21, as shown in the figure. Figure 8 As shown, a slag discharge baffle connecting ring 213 is fixedly provided on the inner side wall of the split filter drum 21 near the left and right ends. The two ends of the slag discharge baffle 212 are rotatably connected to the slag discharge baffle connecting ring 213 through a rotating shaft.

[0070] Springs are located on the rotating shafts at both ends of the slag discharge baffle 212. One end of the torsion spring is fixedly connected to the slag discharge baffle 212, and the other end of the torsion spring is fixedly connected to the slag discharge baffle connecting ring 213. The torsion spring constraint makes the plane of the slag discharge baffle 212 located on the radial plane of the split filter drum 21 at its location.

[0071] like Figure 8 As shown, a slag discharge baffle connecting ring 213 is rotatably fitted with a slag discharge baffle actuating ring 214. The slag discharge baffle actuating ring 214 is connected to the slag discharge baffle 212 through a drive rod 215. Both ends of the drive rod 215 are connected to the slag discharge baffle 212 and the slag discharge baffle actuating ring 214 through movable hinges.

[0072] It should be noted that all motors and vibration modules 15 used in this invention adopt existing technologies. Those skilled in the art can select and use them as needed, as long as they can meet the technical solution of this invention. No special limitations are made here.

[0073] In practical applications, the split filter roller 21 is a cylindrical structure composed of a frame structure and multiple filter plates. The filter plates are screen structures. The split filter roller 21 can replace filter plates of different specifications to adjust the specifications of the filter plates according to actual filtration needs. During operation, the filtration pores of the multiple split filter rollers 21 arranged from the inside to the outside decrease sequentially.

[0074] The entire device is placed upstream of the sewage flow channel. First, the drive worm 141 on the output shaft of the third motor 14 drives the driven worm wheel 1221 to rotate. The driven worm wheel 1221 drives the support shaft 122 to rotate. The support shaft 122 drives the drum support structure 12 and the multi-stage filter drum 20 to tilt together, so that the end of the split filter drum 21 away from the drum support structure 12 is in a lower position. The angle between the axis of the split filter drum 21 and the horizontal line is 15°.

[0075] The wastewater to be treated is transported to the inside of the inlet distribution housing 23 through a pipeline using a transfer pump. The wastewater inside the inlet distribution housing 23 is discharged from the drain hole 231 and first enters the innermost split filter drum 21.

[0076] Wastewater flows through each of the separate filter rollers 21 from the inside out. Impurities of various sizes in the wastewater are intercepted and filtered by the separate filter rollers 21. The filtered wastewater flows into the wastewater flow tank and then the wastewater is collected and awaits further treatment.

[0077] The first drive gear 131 on the output shaft of the first motor 13 drives the first driven gear ring 211 to rotate. The first driven gear ring 211 drives the split filter drum 21 to rotate. During the rotation, the impurities intercepted and filtered inside the split filter drum 21 will be transported to a position above the axis of the split filter drum 21 under the conveying action of the slag discharge baffle 212. Then, the impurities intercepted and filtered inside the split filter drum 21 fall into the U-shaped slag discharge trough 41 under its own gravity. The impurities in the U-shaped slag discharge trough 41 are collected uniformly through the slag discharge pipe 42.

[0078] Most of the impurities filtered and intercepted in the split filter drum 21 will be collected in the U-shaped slag discharge trough 41 and then discharged. A small amount of impurities will pass through the end filter drum 22 and then be collected in the end slag discharge collection hopper 24.

[0079] When the split filter drum 21 is working, the cleaning drum 31 is moved away from the inner wall of the split filter drum 21 under the control of the cleaning mechanism connecting frame 33, so as to avoid interference between the cleaning drum 31 and the slag discharge baffle 212.

[0080] The sliding block 333 in the cleaning mechanism connecting frame 33 slides in the sliding groove 332 of the support column 331. The second motor 335 drives the threaded drive rod 334 to rotate. The threaded drive rod 334 and the threaded hole 3331 are threadedly connected, which allows the sliding block 333 to slide in the sliding groove 332 of the support column 331. The movement of the sliding block 333 can drive the cleaning cylinder 31 to move closer to or away from the inner wall of the split filter cylinder 21.

[0081] The cleaning brush 32 inside the cleaning cylinder 31 is driven to rotate by a motor. The cleaning nozzle 341 on the cleaning water supply pipe 34 sprays clean water to rinse the inner wall of the split filter cylinder 21. The rotation of the cleaning brush 32 cleans the dirt on the inner wall of the split filter cylinder 21. The wastewater generated from cleaning the inner wall of the split filter cylinder 21 is collected in the cleaning drain housing 35. The wastewater in the cleaning drain housing 35 is then discharged through the pipeline for unified treatment.

[0082] The slag discharge baffle actuating ring 214 is driven to rotate by a motor. During the rotation, the slag discharge baffle 212 can be controlled to deflect to both sides by the drive rod 215. After the slag discharge baffle 212 deflects, it is easier for the cleaning brush 32 to clean the inner wall of the split filter drum 21.

Claims

1. A drum filter device for wastewater treatment, characterized in that, It includes a support frame (10) and a multi-stage filter roller (20) connected to the support frame (10); The support frame (10) includes a support base (11) and a roller support structure (12) rotatably connected to the support base (11); The multi-stage filter drum (20) includes multiple split filter drums (21) with openings facing left. The split filter drum (21) is provided with a stain cleaning mechanism (30) for cleaning the stains remaining inside the split filter drum (21) and a slag discharge mechanism (40). The roller support structure (12) includes multiple roller support shells (121) arranged coaxially with openings facing right, and the roller support shells (121) are cylindrical; A rotating engagement ring (123) is fixedly provided on the inner side of the roller support housing (121), and a rotating support ring (124) is rotatably engaged on the rotating engagement ring (123). The left end of each of the split filter rollers (21) is fixedly connected to the rotating support ring (124) on the inner side of the corresponding roller support structure (12). The split filter roller (21) has a tapered section at the end away from the roller support housing (121), and an end filter cylinder (22) is fixedly provided at the end of the split filter roller (21) away from the roller support housing (121); The split filter drum (21) is fixedly provided with a first driven gear ring (211) at the left end. The drum support housing (121) is fixedly provided with a first motor (13) near the upper side. The output shaft of the first motor (13) is fixedly provided with a first drive gear (131). The first drive gear (131) is meshed with the first driven gear ring (211). The stain cleaning mechanism (30) includes a cleaning cylinder (31) and a cleaning brush (32) rotatably connected inside the cleaning cylinder (31). The cleaning cylinder (31) is arranged inside the split filter drum (21) near the top. The cleaning cylinder (31) extends axially along the split filter drum (21). The cleaning cylinder (31) is connected to the inside of the drum support housing (121) through a cleaning mechanism connecting frame (33). The cleaning cylinder (31) has a groove on its upper side, and a cleaning water supply pipe (34) is fixedly provided on the outer side of the cleaning cylinder (31). The cleaning water supply pipe (34) extends along the axial direction of the cleaning cylinder (31), and has multiple cleaning nozzles (341) on the cleaning water supply pipe (34). The cleaning mechanism connecting frame (33) includes a support column (331) fixed to the inner side of the roller support housing (121) near the top. The support column (331) has a sliding groove (332). A sliding block (333) is slidably fitted in the sliding groove (332). The sliding block (333) has a threaded hole (3331). A threaded drive rod (334) is threadedly fitted in the threaded hole (3331). The cleaning cylinder (31) is fixedly connected to the sliding block (333) through a fixed connecting rod. A second motor (335) for driving the threaded drive rod (334) to rotate is fixed on the support column (331); The cleaning cylinder (31) is fixedly provided with a cleaning drain housing (35) on its lower side. The interior of the cleaning drain housing (35) is connected to the interior of the cleaning cylinder (31) through multiple drain holes. The slag discharge mechanism (40) includes a U-shaped slag discharge trough (41) disposed inside the split filter drum (21). The U-shaped slag discharge trough (41) is an open-top shell structure. The U-shaped slag discharge trough (41) is disposed inside the split filter drum (21) near its inner wall. The U-shaped slag discharge trough (41) extends along the axis of the split filter drum (21). One end of the U-shaped slag discharge trough (41) near the drum support shell (121) is fixedly connected to the drum support shell (121). The other end of the U-shaped slag discharge trough (41) is connected to a slag discharge pipe (42). The slag discharge pipe (42) extends to the end of the end filter cylinder (22) away from the drum support shell (121) and extends out of the end filter cylinder (22). The end filter cylinder (22) is provided with a slag discharge pipe support plate (125) on the side away from the drum support housing (121). The slag discharge pipe (42) is fixedly connected to the slag discharge pipe support plate (125). The slag discharge pipe support plate (125) is fixedly connected to the outermost drum support housing (121) through a fixed connecting rod (126). A water inlet distribution housing (23) is fixedly provided on the innermost roller support housing (121), and the other end of the water inlet distribution housing (23) extends into the innermost split filter roller (21). The water inlet distribution housing (23) has multiple drain holes (231). The inner wall of the split filter drum (21) is provided with a plurality of slag discharge baffles (212). The slag discharge baffles (212) extend along the axial direction of the split filter drum (21). The inner wall of the split filter drum (21) is fixed with a slag discharge baffle connecting ring (213) near the left and right ends. The two ends of the slag discharge baffles (212) are rotatably connected to the slag discharge baffle connecting rings (213) through a rotating shaft. The slag discharge baffle (212) has a torsion spring on the rotating shaft at both ends. One end of the torsion spring is fixedly connected to the slag discharge baffle (212), and the other end of the torsion spring is fixedly connected to the slag discharge baffle connecting ring (213). The torsion spring constrains the plane of the slag discharge baffle (212) to be on the radial plane of the split filter drum (21) at its location. The slag discharge baffle connecting ring (213) is rotatably fitted with a slag discharge baffle actuating ring (214). The slag discharge baffle actuating ring (214) is connected to the slag discharge baffle (212) through a drive rod (215). Both ends of the drive rod (215) are connected to the slag discharge baffle (212) and the slag discharge baffle actuating ring (214) through movable hinges.

2. The drum filter device for sewage treatment according to claim 1, characterized in that: The support base (11) includes a support plate (111), a rotating shaft support plate (112) is fixedly provided on the top of the support plate (111), the rotating shaft support plate (112) has a rotating shaft mating hole (113), and a support rotating shaft (122) is fixedly provided on the outermost roller support housing (121), the support rotating shaft (122) is rotatably connected in the rotating shaft mating hole (113); A drive protective shell (114) is fixedly provided on the shaft support plate (112) at the shaft mating hole (113). A third motor (14) is fixedly provided inside the drive protective shell (114). A drive worm (141) is fixedly provided on the output shaft of the third motor (14). A driven worm wheel (1221) is fixedly provided on the support shaft (122). The drive worm (141) and the driven worm wheel (1221) are meshed and connected.

3. The drum filter device for sewage treatment according to claim 1, characterized in that: The U-shaped slag discharge trough (41) is connected to an arc-shaped slag discharge constraint baffle (411) on the side near the axis of the split filter drum (21), and the slag discharge constraint baffle (411) is adapted to the curvature of the split filter drum (21).

4. A drum filter device for wastewater treatment according to claim 1, characterized in that: The U-shaped slag discharge trough (41) is fixedly provided with a flushing ring (412) at one end near the drum support housing (121), and the flushing ring (412) has multiple flushing nozzles on the side away from the drum support housing (121).

5. A drum filter device for sewage treatment according to claim 1, characterized in that: The end filter cylinder (22) is provided with an end slag collection hopper (24) below the end away from the drum support housing (121), and the end slag collection hopper (24) is fixed on the slag discharge pipe support plate (125).

6. A drum filter device for wastewater treatment according to claim 1, characterized in that: Each of the roller support housings (121) is fixedly provided with multiple vibration modules (15).

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