Sewage filtering treatment device and method

Abstract

The invention discloses a sewage filtering treatment device and method.The sewage filtering treatment device comprises a treatment barrel and a first water inlet pipe, a filtering barrel is arranged in an inner cavity of the treatment barrel, a filtering net is arranged on the inner wall of the filtering barrel, a first rotating shaft is fixedly connected to the end, away from the first water inlet pipe, of the filtering barrel, and a driving motor is installed on the outer wall of the treatment barrel; an output shaft of the driving motor is in transmission connection with the first rotating shaft to drive the filter cartridge to rotate; a water outlet pipe is fixedly connected to the side wall of the treatment cylinder, and treated sewage enters the filter cylinder to be filtered, then flows into the treatment cylinder and is discharged from the water outlet pipe. The filter cartridge is driven by the driving motor to rotate, so that the filter screen rotates while sewage is filtered, filtered impurities are prevented from being concentrated on the same part of the filter screen, and the impurities are prevented from being attached to the filter screen to block the filter screen.

Description

Technical Field

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

[0002] Wastewater filtration is a crucial step in the wastewater treatment process. Its main purpose is to remove suspended solids, particulate matter, grease, organic matter, and other pollutants from wastewater to improve water quality. Physical filtration is one of the most commonly used wastewater filtration methods. It utilizes physical principles to separate solid particles and suspended solids from wastewater. Common physical filtration equipment includes bar screens, sieves, and sedimentation tanks. Bar screens and sieves can intercept large solid materials in wastewater, preventing them from entering subsequent treatment equipment, protecting it from damage, improving the efficiency of the entire wastewater treatment system, and thus protecting the aquatic environment and maintaining public health.

[0003] Wastewater filtration equipment typically uses filter screens to filter wastewater. However, existing filter screens are generally of a fixed structure, which leads to clogging after prolonged use, rendering the equipment unusable. For example, a wastewater filtration device disclosed in Chinese patent application CN202220430509.X has a relatively fixed filter screen, which becomes clogged after a period of use. Therefore, it is necessary to improve existing filtration devices to reduce filter screen clogging and extend their service life. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems and provide a wastewater filtration treatment device and method.

[0005] To achieve the above objectives, the present invention employs the following technical solution: This invention provides a wastewater filtration and treatment device, including a treatment cylinder and a first inlet pipe fixedly connected to one end of the treatment cylinder. The treatment cylinder has a hollow structure. The first inlet pipe is used to guide water flow into the treatment cylinder. A filter cylinder is disposed inside the treatment cylinder. The filter cylinder is a cylindrical frame structure with one open end facing the first inlet pipe. A filter screen is disposed on the inner wall of the filter cylinder. A first rotating shaft is fixedly connected to the end of the filter cylinder away from the first inlet pipe. A drive motor is installed on the outer wall of the treatment cylinder. The output shaft of the drive motor is connected to the first rotating shaft to drive the filter cylinder to rotate. An outlet pipe is fixedly connected to the side wall of the treatment cylinder. Wastewater undergoing treatment enters the filter cylinder, is filtered, flows into the treatment cylinder, and is discharged from the outlet pipe.

[0006] Furthermore, a first roller is rotatably connected to the inner side of the processing cylinder, and a support ring is fixedly connected to one end of the filter cylinder near the first water inlet pipe. The end of the support ring abuts against the inner wall of the processing cylinder and slides against the inner wall of the processing cylinder. The outer ring of the first roller abuts against the outer side of the support ring.

[0007] Furthermore, an internal gear ring is provided on the inner side of the supporting ring, and a mounting flange is detachably connected to the side wall of the processing cylinder. A second rotating shaft is rotatably connected to the middle of the mounting flange, and a rotating rod is fixedly connected to the second rotating shaft. The rotating rod is located inside the filter cylinder, and cleaning bristles are fixedly connected to the rod body. The internal gear ring and the second rotating shaft are driven by gears.

[0008] Furthermore, the shaft of the second rotating shaft is provided with a first gear, and a second gear is rotatably connected to the mounting flange. Both the first gear and the second gear are located inside the internal gear ring. The second gear and the internal gear ring are driven by gear meshing, and the first gear and the second gear are driven by gear meshing to form a gear transmission.

[0009] Furthermore, an isolation cylinder is fixedly connected to the end of the first water inlet pipe away from the treatment cylinder, and a second water inlet pipe is fixedly connected to the end of the isolation cylinder away from the first water inlet pipe. The isolation cylinder has a hollow structure and a first isolation mesh plate is provided inside the isolation cylinder.

[0010] Furthermore, the first isolation mesh plate is fixedly connected to the inner wall of the isolation cylinder, a first fixing block is fixedly connected to the upper end of the inner wall of the isolation cylinder, and a second fixing block is fixedly connected to the lower end of the inner wall of the isolation cylinder. Both the first fixing block and the second fixing block are provided with sliding grooves. A second isolation mesh plate is provided inside the isolation cylinder. The upper and lower ends of the second isolation mesh plate extend into the sliding grooves and slide in cooperation with the sliding grooves. A first isolation hole is provided on the first isolation mesh plate, and a second isolation hole is provided on the second isolation mesh plate.

[0011] Furthermore, a first rack is fixedly connected to the lower end of the second isolation mesh plate, a transmission block is fixedly connected to the outer wall of the isolation cylinder, a third gear is rotatably connected in the transmission block, the first rack extends through the isolation cylinder into the transmission block and meshes with the third gear, the transmission block has an installation cavity, a second rack is slidably connected in the installation cavity, the second rack is staggered with the first rack, a fourth gear concentric with the third gear is fixedly connected to one side of the third gear, the fourth gear meshes with the second rack, and a fifth rack is rotatably connected to the bottom inner wall of the second water inlet pipe. The wheel has a fifth gear with a fixed paddle attached, which extends into the second water inlet pipe. A connecting rod is fixedly attached to the end of the second rack, and a third rack is fixedly attached to the connecting rod, which is arranged parallel to the second rack. The third rack and the fifth gear are driven by gear meshing. When the water flow in the second water inlet pipe is small, the second isolation hole and the first isolation hole are misaligned. When the water flow in the second water inlet pipe increases, the paddle deflects under the increased water flow, driving the fifth gear to rotate and causing the second isolation mesh plate to move downward. The second isolation hole on the second isolation mesh plate gradually aligns with the first isolation hole on the first isolation mesh plate.

[0012] Furthermore, a compression spring is provided in the groove within the second fixing block, and the upper end of the compression spring abuts against the lower end face of the second isolation mesh plate.

[0013] Furthermore, a flange plate is fixedly connected to the inlet end of the second water inlet pipe.

[0014] Another aspect of the present invention provides a wastewater filtration treatment method, which uses the above-mentioned wastewater filtration treatment device and comprises the following steps: 1. The sewage is connected to the second inlet pipe. The sewage flows from the second inlet pipe into the isolation cylinder, and the sewage is separated from debris by the first isolation mesh plate and the second isolation mesh plate. 2. The isolated wastewater is introduced into the treatment cylinder. The wastewater is filtered through the filter screen in the filter cylinder. At the same time as filtration, the drive motor is started. The drive motor drives the filter cylinder to rotate. The rotation of the filter cylinder drives the rotating rod to rotate, so that the cleaning brush on the rotating rod cleans the filter screen on the inner wall of the filter cylinder. 3. The filtered wastewater in the treatment cylinder flows into the outlet pipe and is discharged.

[0015] The wastewater filtration treatment device and method provided by this invention have the following beneficial effects: Wastewater flowing into the treatment cylinder is filtered through a filter screen on the filter cylinder. The filtered wastewater flows out of the filter cylinder, enters the bottom of the treatment cylinder, and is discharged from the outlet pipe, thus filtering the wastewater. Simultaneously, a drive motor drives the filter cylinder to rotate, causing the filter screen to rotate, preventing impurities from concentrating in the same area of ​​the filter screen and thus avoiding clogging. During wastewater filtration, the rotation of the filter cylinder drives the filter screen to rotate, preventing impurities from concentrating in fixed areas of the filter screen. Simultaneously, the rotation of the filter cylinder drives a rotating rod to drive cleaning brushes to clean the surface of the filter screen, keeping the surface clean. Furthermore, the cleaning brushes can wrap filamentous debris around the rotating rod during rotation. After a certain filtration time, the rotating rod can be removed by disassembling the mounting flange to clean its surface debris, thus preventing debris from remaining in the filter cylinder for extended periods. Attached Figure Description

[0016] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings: Figure 1 This is a cross-sectional structural schematic diagram of a wastewater filtration treatment device provided by the present invention; Figure 2 for Figure 1 Schematic diagram of a partial structure at part A in the middle; Figure 3 for Figure 1 Schematic diagram of a partial structure in part B; Figure 4 This is a schematic diagram of the sewage flow during sewage filtration in a sewage filtration treatment device provided by the present invention.

[0017] The following are the labeling instructions in the diagram: 1. Treatment cylinder; 11. Outlet pipe; 12. First roller; 2. First inlet pipe; 3. Filter cylinder; 31. Filter screen; 32. First rotating shaft; 33. Drive motor; 34. Support ring; 35. Internal gear ring; 4. Mounting flange; 41. Second rotating shaft; 42. Rotating rod; 43. Cleaning brush bristles; 44. First gear; 45. Second gear; 5. Isolation cylinder; 51. First isolation mesh plate; 52. First fixing block; 53. Second fixing block; 54. Second isolation mesh plate; 55. First isolation hole; 56. Second isolation hole; 57. First rack; 58. Compression spring; 6. Second inlet pipe; 61. Fifth gear; 62. Paddle; 63. Flange plate; 7. Transmission block; 71. Third gear; 72. Second rack; 73. Fourth gear; 74. Connecting rod; 75. Third rack. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that in the embodiments of the present invention, all directional indications (such as up-down-left-right-forward-backward...) are only used to explain the relative positional relationship and movement between the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0021] like Figures 1-4 As shown, a wastewater filtration and treatment device includes a treatment cylinder 1 and a first inlet pipe 2 fixedly connected to one end of the treatment cylinder 1. The treatment cylinder 1 has a hollow structure. The first inlet pipe 2 is used to guide water flow into the treatment cylinder 1. A filter cylinder 3 is provided in the inner cavity of the treatment cylinder 1. The filter cylinder 3 is a cylindrical frame structure with one open end to allow wastewater to pass through it, and the open end faces the first inlet pipe 2. A filter screen 31 is provided on the inner wall of the filter cylinder 3. A first rotating shaft 32 is fixedly connected to the end of the filter cylinder 3 away from the first inlet pipe 2. A drive motor 33 is installed on the outer wall of the treatment cylinder 1. The output shaft of the drive motor 33 is connected to the first rotating shaft 32 to drive the filter cylinder 3 to rotate. An outlet pipe 11 is fixedly connected to the side wall of the treatment cylinder 1. Wastewater undergoing treatment enters the filter cylinder 3 for filtration, flows into the treatment cylinder 1, and is discharged from the outlet pipe 11.

[0022] Using the above scheme, the wastewater flowing into the treatment cylinder 1 is filtered by the filter screen 31 on the filter cylinder 3. The filtered wastewater flows out of the filter cylinder 3, enters the bottom of the treatment cylinder 1, and is discharged from the outlet pipe 11, thereby filtering the wastewater. At the same time as filtering the wastewater, the filter cylinder 3 is driven to rotate by the drive motor 33, thereby causing the filter screen 31 to rotate, avoiding the concentration of filtered impurities in the same part of the filter screen 31, and thus preventing impurities from adhering to the filter screen 31 and causing blockage.

[0023] Specifically, a first roller 12 is rotatably connected to the inner side of the treatment cylinder 1, and a support ring 34 is fixedly connected to the end of the filter cylinder 3 near the first water inlet pipe 2. The end of the support ring 34 abuts against the inner wall of the treatment cylinder 1 and slides against the inner wall of the treatment cylinder 1. The outer ring of the first roller 12 abuts against the outer side of the support ring 34. The first roller 12 supports the support ring 34, thereby supporting the treatment cylinder 1, preventing the treatment cylinder 1 from being in a cantilever state, balancing the forces at both ends of the treatment cylinder 1, and improving its service life.

[0024] Specifically, an internal gear ring 35 is provided on the inner side of the supporting ring 34, and a mounting flange 4 is detachably connected to the side wall of the processing cylinder 1. A second rotating shaft 41 is rotatably connected to the middle of the mounting flange 4, and a rotating rod 42 is fixedly connected to the second rotating shaft 41. The rotating rod 42 is located inside the filter cylinder 3, and a cleaning brush bristle 43 is fixedly connected to the rod of the rotating rod 42. The internal gear ring 35 and the second rotating shaft 41 are driven by gears. When the filter cylinder 3 rotates, it drives the internal gear ring 35 to rotate. The rotation of the internal gear ring 35 drives the rotating rod 42 to rotate through gear transmission. The rotation of the rotating rod 42 drives the cleaning bristles 43 to rotate, so that the cleaning bristles 43 can clean the surface of the filter screen 31 on the inner wall of the filter cylinder 3, thus preventing the surface of the filter screen 31 from becoming clogged. During the process of filtering sewage, the rotation of the filter cylinder 3 drives the filter screen 31 to rotate, which prevents impurities from accumulating in the fixed part of the filter screen 31. While the filter cylinder 3 is rotating, it drives the rotating rod 42 to drive the cleaning bristles 43 to clean the surface of the filter screen 31, so that the surface of the filter screen 31 remains clean. In addition, the cleaning bristles 43 can wrap filamentous debris around the rotating rod 42 during the rotation process. After filtering for a certain period of time, the rotating rod 42 can be removed by disassembling the mounting flange 4 to clean the surface debris, thereby preventing debris from remaining in the filter cylinder 3 for a long time.

[0025] The second rotating shaft 41 is equipped with a first gear 44, and a second gear 45 is rotatably connected to the mounting flange 4. Both the first gear 44 and the second gear 45 are located inside the internal gear ring 35. The second gear 45 and the internal gear ring 35 are driven by gear meshing, and the first gear 44 and the second gear 45 form a gear transmission through gear meshing. Through the transition transmission of the second gear 45, the rotating rod 42 and the filter cylinder 3 rotate in opposite directions, thereby making the cleaning bristles 43 and the filter screen 31 rotate in opposite directions, improving the cleaning effect.

[0026] Specifically, an isolation cylinder 5 is fixedly connected to the end of the first inlet pipe 2 away from the treatment cylinder 1, and a second inlet pipe 6 is fixedly connected to the end of the isolation cylinder 5 away from the first inlet pipe 2. The isolation cylinder 5 has a hollow structure and a first isolation mesh plate 51 is provided inside the isolation cylinder 5. Wastewater flows into the isolation cylinder 5 from the second inlet pipe 6, and larger debris is isolated by the first isolation mesh plate 51 to prevent larger debris from entering the treatment cylinder 1 and damaging the filter screen 31. Wastewater passing through the first isolation mesh plate 51 flows into the treatment cylinder 1 through the first inlet pipe 2.

[0027] The first isolation mesh plate 51 is fixedly connected to the inner wall of the isolation cylinder 5. A first fixing block 52 is fixedly connected to the upper end of the inner wall of the isolation cylinder 5, and a second fixing block 53 is fixedly connected to the lower end of the inner wall of the isolation cylinder 5. Both the first fixing block 52 and the second fixing block 53 are provided with sliding grooves. A second isolation mesh plate 54 is provided inside the isolation cylinder 5. The upper and lower ends of the second isolation mesh plate 54 extend into the sliding grooves and slide in cooperation with the sliding grooves. A first isolation hole 55 is provided on the first isolation mesh plate 51, and a second isolation hole 56 is provided on the second isolation mesh plate 54. The apertures of the first isolation hole 55 and the second isolation hole 56 are both larger than the apertures of the filter holes on the filter screen 31, thereby isolating and filtering large-diameter impurities through the first isolation hole 55 and the second isolation hole 56, while fine impurities are filtered through the filter cylinder 3 and the filter screen 31.

[0028] Specifically, a first rack 57 is fixedly connected to the lower end of the second isolation mesh plate 54, a transmission block 7 is fixedly connected to the outer wall of the isolation cylinder 5, a third gear 71 is rotatably connected in the transmission block 7, the first rack 57 extends through the isolation cylinder 5 into the transmission block 7 and meshes with the third gear 71, the transmission block 7 has an installation cavity, a second rack 72 is slidably connected in the installation cavity, the second rack 72 and the first rack 57 are staggered so that they do not interfere with each other, a fourth gear 73 concentric with the third gear 71 is fixedly connected to one side of the third gear 71, the fourth gear 73 meshes with the second rack 72, and a fifth gear is rotatably connected to the bottom inner wall of the second water inlet pipe 6. 61. A paddle 62 is fixedly connected to the fifth gear 61. The paddle 62 extends into the second water inlet pipe 6. A connecting rod 74 is fixedly connected to the end of the second rack 72. A third rack 75, arranged parallel to the second rack 72, is fixedly connected to the connecting rod 74. The third rack 75 and the fifth gear 61 are driven by gear meshing. When the water flow in the second water inlet pipe 6 is small, the second isolation hole 56 and the first isolation hole 55 are misaligned. When the water flow in the second water inlet pipe 6 increases, the paddle 62 deflects under the condition of increased water flow, driving the fifth gear 61 to rotate, and causing the second isolation mesh plate 54 to move downward. The second isolation hole 56 on the second isolation mesh plate 54 and the first isolation hole 55 on the first isolation mesh plate 51 gradually become aligned. By setting a second isolation mesh plate 54, when the water flow is relatively small, the second isolation hole 56 is misaligned with the first isolation hole 55, reducing water flow and improving the separation effect of debris. Through the transmission cooperation between the lever 62 and the second isolation mesh plate 54, when the sewage flow in the second inlet pipe 6 increases, the impact force of the water flow on the lever 62 increases, and the lever 62 deflects to the left, thereby driving the fifth gear 61 to rotate. The rotation of the fifth gear 61 drives the third rack 75 to move, which in turn drives the second rack 72 to move. Through gear transmission, the second isolation mesh plate 54 moves downward, causing the position of the second isolation hole 56 to change, so that the second isolation hole 56 and the first isolation hole 55 gradually become aligned, thereby improving water flow and avoiding untimely filtration.

[0029] A compression spring 58 is installed in the groove within the second fixing block 53, with the upper end of the compression spring 58 abutting against the lower end face of the second isolation mesh plate 54. The elastic force provided by the compression spring 58 drives the second isolation mesh plate 54 upwards when the sewage flow rate is low, thereby causing the second isolation hole 56 to be misaligned with itself.

[0030] Specifically, a flange plate 63 is fixedly connected to the inlet end of the second water inlet pipe 6. The flange plate 63 facilitates the connection of a sewage pipe for transporting sewage, making installation and connection convenient.

[0031] This invention provides a wastewater filtration treatment method, applied to the aforementioned wastewater filtration treatment device, comprising the following steps: 1. The sewage is connected to the second inlet pipe 6. The sewage flows from the second inlet pipe 6 into the isolation cylinder 5. The sewage is separated from debris by the first isolation mesh plate 51 and the second isolation mesh plate 54. 2. The isolated sewage is introduced into the treatment cylinder 1. The sewage is filtered through the filter cylinder 3 and the filter screen 31. At the same time as filtration, the drive motor 33 is started. The drive motor 33 drives the filter cylinder 3 to rotate. The rotation of the filter cylinder 3 drives the rotating rod 42 to rotate, so that the cleaning brush 43 on the rotating rod 42 cleans the filter screen 31 on the inner wall of the filter cylinder 3. 3. The filtered wastewater in treatment cylinder 1 flows into the outlet pipe 11 and is discharged.

[0032] The parts not covered in this technical solution can be implemented using existing technologies.

[0033] The foregoing has shown and described the basic principles, main features, and characteristics of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention includes the appended claims and their equivalents.

Claims

1. A wastewater filtration and treatment device, characterized in that: The device includes a treatment cylinder (1) and a first inlet pipe (2) fixedly connected to one end of the treatment cylinder (1). The treatment cylinder (1) is a hollow structure. The first inlet pipe (2) is used to guide water flow into the treatment cylinder (1). A filter cylinder (3) is provided in the inner cavity of the treatment cylinder (1). The filter cylinder (3) is a cylindrical frame structure with one open end facing the first inlet pipe (2). A filter screen (31) is provided on the inner wall of the filter cylinder (3). A first rotating shaft (32) is fixedly connected to the end of the filter cylinder (3) away from the first inlet pipe (2). A drive motor (33) is installed on the outer wall of the treatment cylinder (1). The output shaft of the drive motor (33) is connected to the first rotating shaft (32) to drive the filter cylinder (3) to rotate. An outlet pipe (11) is fixedly connected to the side wall of the treatment cylinder (1). Wastewater in the process enters the filter cylinder (3) for filtration and then flows into the treatment cylinder (1) and is discharged from the outlet pipe (11).

2. The wastewater filtration treatment device according to claim 1, characterized in that: The processing cylinder (1) is rotatably connected to a first roller (12), and the filter cylinder (3) is fixedly connected to a support ring (34) at one end near the first water inlet pipe (2). The end of the support ring (34) abuts against the inner wall of the processing cylinder (1) and slides against the inner wall of the processing cylinder (1). The outer ring of the first roller (12) abuts against the outer side of the support ring (34).

3. The wastewater filtration treatment device according to claim 2, characterized in that: An internal gear ring (35) is provided on the inner side of the supporting ring (34). A mounting flange (4) is detachably connected to the side wall of the processing cylinder (1). A second rotating shaft (41) is rotatably connected to the middle of the mounting flange (4). A rotating rod (42) is fixedly connected to the second rotating shaft (41). The rotating rod (42) is located inside the filter cylinder (3) and a cleaning brush (43) is fixedly connected to the rod of the rotating rod (42). The internal gear ring (35) and the second rotating shaft (41) are driven by gears.

4. The wastewater filtration treatment device according to claim 3, characterized in that: The shaft of the second rotating shaft (41) is provided with a first gear (44), and a second gear (45) is rotatably connected to the mounting flange (4). The first gear (44) and the second gear (45) are both located inside the internal gear ring (35). The second gear (45) and the internal gear ring (35) are driven by gear meshing. The first gear (44) and the second gear (45) form a gear drive by gear meshing.

5. A wastewater filtration treatment device according to any one of claims 1-4, characterized in that: The first water inlet pipe (2) is fixedly connected to an isolation cylinder (5) at the end away from the treatment cylinder (1), and the isolation cylinder (5) is fixedly connected to a second water inlet pipe (6) at the end away from the first water inlet pipe (2). The isolation cylinder (5) has a hollow structure and a first isolation mesh plate (51) is provided in the isolation cylinder (5).

6. A wastewater filtration treatment device according to claim 5, characterized in that: The first isolation mesh plate (51) is fixedly connected to the inner wall of the isolation cylinder (5). The upper end of the inner wall of the isolation cylinder (5) is fixedly connected to the first fixing block (52), and the lower end of the inner wall of the isolation cylinder (5) is fixedly connected to the second fixing block (53). The first fixing block (52) and the second fixing block (53) are both provided with sliding grooves. The isolation cylinder (5) is provided with a second isolation mesh plate (54). The upper and lower ends of the second isolation mesh plate (54) extend into the sliding groove and slide in cooperation with the sliding groove. The first isolation mesh plate (51) is provided with a first isolation hole (55), and the second isolation mesh plate (54) is provided with a second isolation hole (56).

7. A wastewater filtration treatment device according to claim 6, characterized in that: A first rack (57) is fixedly connected to the lower end of the second isolation mesh plate (54). A transmission block (7) is fixedly connected to the outer wall of the isolation cylinder (5). A third gear (71) is rotatably connected in the transmission block (7). The first rack (57) extends through the isolation cylinder (5) into the transmission block (7) and meshes with the third gear (71) for transmission. An installation cavity is provided in the transmission block (7). A second rack (72) is slidably connected in the installation cavity. The second rack (72) is staggered from the first rack (57). A fourth gear (73) is fixedly connected to one side of the third gear (71) and is concentric with the third gear (71). The fourth gear (73) meshes with the second rack (72) for transmission. A fifth gear (61) is rotatably connected to the bottom inner wall of the second water inlet pipe (6). A paddle (62) is fixedly connected to the wheel (61). The paddle (62) extends into the second water inlet pipe (6). A connecting rod (74) is fixedly connected to the end of the second rack (72). A third rack (75) is fixedly connected to the connecting rod (74) and arranged parallel to the second rack (72). The third rack (75) and the fifth gear (61) are driven by gear meshing. When the water flow in the second water inlet pipe (6) is small, the second isolation hole (56) and the first isolation hole (55) are misaligned. When the water flow in the second water inlet pipe (6) increases, the paddle (62) deflects under the condition of increased water flow, driving the fifth gear (61) to rotate, and the transmission causes the second isolation mesh plate (54) to move downward. The second isolation hole (56) on the second isolation mesh plate (54) and the first isolation hole (55) on the first isolation mesh plate (51) gradually become aligned.

8. A wastewater filtration treatment device according to claim 7, characterized in that: A compression spring (58) is provided in the groove inside the second fixing block (53), and the upper end of the compression spring (58) abuts against the lower end face of the second isolation mesh plate (54).

9. A wastewater filtration treatment device according to claim 5, characterized in that: The inlet end of the second water inlet pipe (6) is fixedly connected to a flange plate (63).

10. A wastewater filtration treatment method, employing the wastewater filtration treatment device as described in claim 8, characterized in that: Follow these steps:

1. The sewage is connected to the second inlet pipe (6). The sewage flows from the second inlet pipe (6) into the isolation cylinder (5). The sewage is separated from debris by the first isolation mesh plate (51) and the second isolation mesh plate (54).

2. The isolated sewage is introduced into the treatment cylinder (1). The sewage passes through the filter cylinder (3) and is filtered through the filter screen (31). At the same time as filtration, the drive motor (33) is started. The drive motor (33) drives the filter cylinder (3) to rotate. The rotation of the filter cylinder (3) drives the rotating rod (42) to rotate, so that the cleaning brush (43) on the rotating rod (42) cleans the filter screen (31) on the inner wall of the filter cylinder (3).

3. The filtered wastewater in the treatment cylinder (1) flows into the outlet pipe (11) and is discharged.

Images