Multi-stage filtering device for municipal engineering sewage

Abstract

The invention belongs to the technical field of sewage filtering, and particularly relates to a municipal engineering sewage multi-stage filtering device which comprises a filtering tank, a water inlet end is arranged at the top of the filtering tank, a water inlet mechanism is arranged at the top of the water inlet end, and a drainage end is arranged at the position, close to the bottom, of one side of the filtering tank. A drainage end is arranged in the filtering tank, a drainage mechanism is arranged on one side of the drainage end, a first filtering plate and a second filtering plate are connected to the two sides of the inner wall of the filtering tank through bolts respectively, the first filtering plate is located above the second filtering plate, the diameter of filtering holes of the first filtering plate is larger than that of filtering holes of the second filtering plate, and an anti-blocking mechanism is arranged between the first filtering plate and the second filtering plate. Impurities blocked on the first filter plate can be effectively treated through the impact of sewage and the action of scraping and brushing, so that the sewage filtering effect of the first filter plate is improved, and the situation that the interior of the first filter plate is blocked due to the fact that impurities remain on the surface of the first filter plate, and consequently the sewage filtering efficiency is affected is prevented.

Description

Technical Field

[0001] This invention relates to the field of wastewater filtration, and more particularly to a multi-stage wastewater filtration device for municipal engineering. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. When discharging municipal wastewater, it is necessary to purify and filter the wastewater to ensure the safety of the discharge.

[0003] A search revealed Chinese patent application CN221107298U, which discloses a multi-stage filtration mechanism for municipal wastewater treatment. The technical solution includes a top box, a primary box, a secondary box, a bottom box, and a rotating frame. A drain pipe is installed through the lower middle of the bottom box. The secondary box is fixed to the upper opening of the bottom box, the primary box is fixed to the upper opening of the secondary box, and the top box is fixed to the upper opening of the secondary box. Assembly ports are provided at the middle of the lower surfaces of the top box, primary box, and secondary box. Guide rails are provided on the upper and lower sides of the assembly ports. The rotating frame is rotatably mounted between the guide rails. A filter screen is fixed to the bottom inner side of the rotating frame. A rotating shaft is fixed to the middle inner side of the rotating frame via a bracket. Material guide grooves are provided on both sides of the interior of the rotating frame. This utility model has the advantages of multi-stage filtration, ensuring safe water transportation, avoiding clogging, facilitating sludge discharge, and reducing operational difficulty.

[0004] Existing devices typically use pumps to transport wastewater into the device for multi-stage filtration through multiple filter plates. However, impurities in the wastewater can remain on the filter plates during filtration, and the accumulation of these impurities can clog the filter plates, thus affecting the filtration efficiency. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A multi-stage filtration device for municipal engineering wastewater includes a filter tank. The top of the filter tank has an inlet end, and an inlet mechanism is provided at the top of the inlet end. A drain end is provided on one side of the filter tank near the bottom, and a drain mechanism is provided on one side of the drain end. A first filter plate and a second filter plate are respectively bolted to both sides of the inner wall of the filter tank, with the first filter plate located above the second filter plate. The diameter of the filter holes in the first filter plate is larger than that in the second filter plate. An anti-clogging mechanism is provided between the first filter plate and the second filter plate.

[0006] Preferably, the water inlet mechanism includes a first pump body, an inlet pipe, and a drain pipe, with both ends of the first pump body connected to the inlet pipe and the drain pipe respectively via flanges, and the bottom of the drain pipe connected to the inlet end via a flange.

[0007] Preferably, the drainage mechanism consists of a second pump body and a water outlet pipe, with one end of the second pump body connected to the drainage end via a flange, and the other end of the second pump body connected to the water outlet pipe via a flange.

[0008] Preferably, the filter tank has two slag outlets on one side, and each of the two slag outlets has a slag removal window on one side. The two slag outlets are located above the first filter plate and the second filter plate, respectively.

[0009] Preferably, the anti-clogging mechanism includes a vertical moving assembly, a shaft, a transmission assembly, and an anti-clogging assembly. The vertical moving assembly consists of two support plates, a rotating shaft, multiple rotating blades, two turntables, two pins, two bushings, and two shaft plates. One end of each support plate is bolted to the inner wall of the filter tank. The two support plates are rotatably connected to the rotating shaft via bearings. Multiple rotating blades are fixed at equal intervals on the outer circumference of the rotating shaft. Both ends of the rotating shaft are bolted to the turntables. One side of the turntable is fixedly connected to the pin. The bushings are rotatably fitted onto the outer wall of the pin. The bottom of the pin is hinged to the top of the shaft plate. A through hole is provided between the top of the first filter plate and the top of the second filter plate. The two through holes are slidably connected to the shaft. Connecting plates are welded to both sides of the shaft near the top. One side of the top of the connecting plate is hinged to the bottom of the shaft plate.

[0010] Preferably, the anti-clogging component includes an anti-clogging frame, a sliding plate, an elastic plate, and an anti-clogging plate. Both sides of the anti-clogging frame are bolted to rotating rods. One end of the rotating rod is rotatably connected to the inner wall of the filter tank via a bearing. A pull-out groove is provided on one side of the anti-clogging frame. A sliding plate is slidably connected to the inner wall of the pull-out groove. A sliding plate spring is welded between one side of the sliding plate and the pull-out groove. One side of the sliding plate is welded to the elastic plate. The other side of the elastic plate is fixedly connected to the anti-clogging plate. Multiple scrapers made of elastic material are provided on the top of the anti-clogging plate. The anti-clogging frame is connected to the shaft via a transmission component. A guide plate is fixed to the outer wall of the rotating rod, and the guide plate is inclined.

[0011] Preferably, the transmission assembly consists of a gear shaft, a gear, and a rack. The two ends of the gear shaft are rotatably connected to the anti-blocking frame through bearings. The gear is fixedly sleeved on the outer circumference of the gear shaft. Rack grooves are provided on both sides of the shaft. The inner wall of the rack groove is fixedly connected to the rack, and the rack meshes with the gear.

[0012] Preferably, the bottom of the shaft is provided with a spraying mechanism, and the spraying mechanism cooperates with the anti-clogging component.

[0013] Preferably, the injection mechanism includes a pressure plate, a compression bladder, a pad, and multiple connecting pipes. The top of the pressure plate is fixedly connected to the bottom of the shaft. The pad is fixed to the bottom of the inner wall of the filter tank by bolts. The compression bladder is located between the bottom of the pressure plate and the top of the pad. Multiple injection holes are opened through one side of the pad and between the compression bladder. Connecting pipes are fixed to the inner walls of the injection holes. An injection pipe is provided at the top of the connecting pipe, and an injection nozzle is provided at the top of the injection pipe.

[0014] The beneficial effects of this invention are as follows: 1. This invention, through its inlet mechanism and anti-clogging mechanism, performs multi-stage filtration of municipal sewage. The inlet mechanism draws the sewage into the filter tank, where it undergoes multi-stage filtration through a first and second filter plate. The filtered sewage is then discharged through a drainage mechanism. During this process, when sewage enters the filter tank, it acts on rotating blades. The impact of the sewage causes the rotating blades to drive the rotating shaft, which in turn rotates synchronously with the shaft. The pin rotates around the center of the rotating disk, and the shaft plate, under the action of the pin and bushing, drives the connecting plate to move up and down reciprocally. When the connecting plate moves downwards, it drives the shaft rod downwards. The rack rotates synchronously with the shaft as the shaft rotates. When the rack moves downward, it meshes with the gear, causing the gear shaft to rotate. The anti-clogging frame deflects upward as the gear rotates. At this time, the anti-clogging plate drives the scraper to act on the bottom of the first filter plate. The scraper lifts up the impurities that are blocked in the first filter plate. The lifted impurities are splashed to one side under the impact of the sewage. Thus, the impact of the sewage and the scraper can effectively treat the impurities that are blocked on the first filter plate, thereby improving the filtration effect of the first filter plate on sewage and preventing impurities from remaining on the surface of the first filter plate and causing blockage inside the first filter plate, which would affect the filtration efficiency of sewage. 2. This invention, through its anti-clogging mechanism and spraying mechanism, ensures that when the shaft reciprocates upward under the action of the rotating blade, the shaft, during its downward movement, drives the pressure plate to compress the compression bladder. At this time, the air pressure inside the compression bladder increases with the compression, and the gas inside the bladder is discharged through the spray pipe under the pressure. The airflow is then sprayed upward through the spray nozzle. Simultaneously, the wastewater at the bottom of the filter tank is sprayed upward under the action of the airflow. This sprayed wastewater acts on the bottom of the second filter plate from bottom to top, discharging impurities that are blocked inside the second filter plate under the spraying action of the wastewater, thereby improving the filtration effect of the second filter plate on wastewater. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a multi-stage sewage filtration device for municipal engineering proposed in this invention; Figure 2This is a schematic diagram of the main structure of a multi-stage filtration device for municipal engineering sewage proposed in this invention; Figure 3 This is a cross-sectional structural diagram of the filter tank of a multi-stage sewage filtration device for municipal engineering proposed in this invention; Figure 4 This is a partial structural schematic diagram of a multi-stage sewage filtration device for municipal engineering proposed in this invention; Figure 5 This is a schematic diagram of the anti-clogging mechanism of a multi-stage sewage filtration device for municipal engineering proposed in this invention; Figure 6 This is a schematic diagram of the anti-clogging component structure of a multi-stage sewage filtration device for municipal engineering proposed in this invention; Figure 7 This is a schematic diagram of the spray mechanism structure of a multi-stage sewage filtration device for municipal engineering proposed in this invention.

[0016] In the attached diagram: 1. Filter tank; 2. Water inlet mechanism; 3. First pump body; 4. Water inlet pipe; 5. Drain pipe; 6. Slag removal window; 7. Slag outlet; 8. Drainage mechanism; 9. Second pump body; 10. Water outlet pipe; 11. Drainage end; 12. Water inlet end; 13. First filter plate; 14. Second filter plate; 15. Anti-clogging mechanism; 16. Jet mechanism; 17. Support plate; 18. Rotating shaft; 19. Rotating blade; 20. Turntable; 21. Shaft 21. Sleeve; 22. Pin; 23. Shaft plate; 24. Connecting plate; 25. Anti-clogging plate; 26. Scraper; 27. Anti-clogging frame; 28. Elastic plate; 29. ​​Rotating rod; 30. Guide plate; 31. Shaft; 32. Pull-out groove; 33. Slide spring; 34. Slide; 35. Gear shaft; 36. Gear; 37. Rack; 38. Pressure plate; 39. Compression bladder; 40. Pad; 41. Connecting pipe; 42. Injection pipe; 43. Injection nozzle. Detailed Implementation

[0017] Example 1, referring to Figures 1-6 A multi-stage sewage filtration device for municipal engineering includes a filter tank 1. The top of the filter tank 1 has an inlet end 12, and the top of the inlet end 12 is equipped with an inlet mechanism 2. A drain end 11 is located near the bottom on one side of the filter tank 1, and a drain mechanism 8 is located on one side of the drain end 11. A first filter plate 13 and a second filter plate 14 are bolted to both sides of the inner wall of the filter tank 1, with the first filter plate 13 positioned above the second filter plate 14. The diameter of the filter holes in the first filter plate 13 is larger than that in the second filter plate 14. An anti-clogging mechanism 15 is provided between the first filter plate 13 and the second filter plate 14, which can effectively treat impurities clogging the first filter plate 13, thereby improving the filtration effect of the first filter plate 13 on sewage and preventing impurities remaining on the surface of the first filter plate 13 from causing blockage inside the first filter plate 13, thus affecting the sewage filtration efficiency.

[0018] Based on the above, the water inlet mechanism 2 includes a first pump body 3, a water inlet pipe 4 and a drain pipe 5, and the two ends of the first pump body 3 are respectively connected to the water inlet pipe 4 and the drain pipe 5 through flanges, and the bottom of the drain pipe 5 is connected to the water inlet end 12 through a flange.

[0019] Based on the above, the drainage mechanism 8 consists of a second pump body 9 and a water outlet pipe 10, with one end of the second pump body 9 connected to the drainage end 11 via a flange, and the other end of the second pump body 9 connected to the water outlet pipe 10 via a flange.

[0020] Based on the above, two slag outlets 7 are opened on one side of the filter tank 1, and a slag removal window 6 is provided on one side of each of the two slag outlets 7. The two slag outlets 7 are located above the first filter plate 13 and the second filter plate 14, respectively.

[0021] Based on the above, the anti-clogging mechanism 15 includes a vertical moving assembly, a shaft 31, a transmission assembly, and an anti-clogging assembly. The vertical moving assembly consists of two support plates 17, a rotating shaft 18, multiple rotating blades 19, two turntables 20, two pins 22, two bushings 21, and two shaft plates 23. One end of each support plate 17 is bolted to the inner wall of the filter tank 1. The two support plates 17 and the rotating shaft 18 are rotatably connected by bearings. The multiple rotating blades 19 are fixed at equal intervals on the outer circumference of the rotating shaft 18. Both ends of 8 are connected to the turntable 20 by bolts. One side of the turntable 20 is fixedly connected to the pin 22. The bushing 21 is rotatably sleeved on the outer wall of the pin 22. The bottom of the pin 22 is connected to the top of the shaft plate 23 by a hinge. A through hole is provided between the top of the first filter plate 13 and the top of the second filter plate 14. The two through holes are slidably connected to the shaft 31. Connecting plates 24 are welded to both sides of the shaft 31 near the top. One side of the top of the connecting plate 24 is connected to the bottom of the shaft plate 23 by a hinge.

[0022] Based on the above, the anti-clogging component includes an anti-clogging frame 27, a sliding plate 34, an elastic plate 28, and an anti-clogging plate 25. Both sides of the anti-clogging frame 27 are bolted to a rotating rod 29. One end of the rotating rod 29 is rotatably connected to the inner wall of the filter tank 1 through a bearing. A pull-out groove 32 is provided on one side of the anti-clogging frame 27. A sliding plate 34 is slidably connected to the inner wall of the pull-out groove 32. A sliding plate spring 33 is welded between one side of the sliding plate 34 and the pull-out groove 32. One side of the sliding plate 34 is welded to the elastic plate 28. The other side of the elastic plate 28 is fixedly connected to the anti-clogging plate 25. Multiple scrapers 26 are provided on the top of the anti-clogging plate 25. The scrapers 26 are made of elastic material. The anti-clogging frame 27 is connected to the shaft 31 through a transmission component. A guide plate 30 is fixed to the outer wall of the rotating rod 29. The guide plate 30 is inclined.

[0023] Based on the above, the transmission assembly consists of a gear shaft 35, a gear 36, and a rack 37. Both ends of the gear shaft 35 are rotatably connected to the anti-clogging frame 27 via bearings. The gear 36 is fixedly sleeved on the outer circumference of the gear shaft 35. Rack grooves are provided on both sides of the shaft 31, and the inner walls of the rack grooves are fixedly connected to the rack 37. The rack 37 meshes with the gear 36. When sewage enters the filter tank 1, the sewage acts on the rotating blade 19. The rotating blade 19, under the impact of the sewage, drives the rotating shaft 18 to rotate. The turntable 20 rotates synchronously with the rotating shaft 18. The pin 22 rotates around the turntable 20. Rotating around the center, the shaft plate 23, under the action of the pin 22 and the bushing 21, drives the connecting plate to move up and down reciprocally. When the connecting plate 24 moves down, it drives the shaft 31 to move down as well. The rack 37 rotates synchronously with the rotation of the shaft 31. When the rack 37 moves down, it meshes with the gear 36 to drive the gear shaft 35 to rotate. The anti-clogging frame 27 deflects upward as the gear 36 rotates. At this time, the anti-clogging plate 25 drives the scraper 26 to act on the bottom of the first filter plate 13. The scraper 26 lifts up the impurities that are blocked in the first filter plate 13, and the lifted impurities are splashed to one side under the impact of the sewage.

[0024] Example 2, refer to Figures 1-7 A multi-stage filtration device for municipal engineering sewage is provided. Compared with Embodiment 1, the bottom of the shaft 31 is provided with a spray mechanism 16, and the spray mechanism 16 cooperates with the anti-clogging component.

[0025] Based on the above, the injection mechanism 16 includes a pressure plate 38, a compression bladder 39, a pad 40, and multiple connecting pipes 41. The top of the pressure plate 38 is fixedly connected to the bottom of the shaft 31. The pad 40 is fixed to the bottom of the inner wall of the filter tank 1 by bolts. The compression bladder 39 is located between the bottom of the pressure plate 38 and the top of the pad 40. Multiple injection holes are provided through one side of the pad 40 and between the compression bladder 39. Connecting pipes 41 are fixed to the inner wall of the injection holes. An injection pipe 42 is provided at the top of the connecting pipe 41, and an injection nozzle 43 is provided at the top of the injection pipe 42. When the shaft 31 reciprocates upward under the action of the rotating blade 19... During the downward movement of the shaft 31, the pressure plate 38 will squeeze the compression bladder 39. At this time, the air pressure inside the compression bladder 39 will increase as the compression bladder 39 is squeezed. The gas inside the compression bladder 39 will be discharged through the injection pipe 42 under the action of air pressure. The airflow will be sprayed upward through the injection nozzle 43. At this time, the sewage at the bottom of the filter tank 1 will be sprayed upward under the action of airflow. The sprayed sewage will act on the bottom of the second filter plate 14 from bottom to top. The impurities blocked inside the second filter plate 14 will be discharged from the inside of the second filter plate 14 under the action of sewage spray, thereby improving the filtration effect of the second filter plate 14 on sewage.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-stage sewage filtration device for municipal engineering, comprising a filter tank (1), characterized in that, The filter tank (1) has a water inlet (12) at the top and a water inlet mechanism (2) at the top of the water inlet (12). The filter tank (1) has a drain end (11) near the bottom on one side and a drain mechanism (8) on one side of the drain end (11). The inner walls of the filter tank (1) are connected by bolts to the first filter plate (13) and the second filter plate (14), respectively. The first filter plate (13) is located above the second filter plate (14). The diameter of the filter holes of the first filter plate (13) is larger than that of the filter holes of the second filter plate (14). An anti-clogging mechanism (15) is provided between the first filter plate (13) and the second filter plate (14).

2. The municipal engineering wastewater multi-stage filtration device according to claim 1, characterized in that, The water inlet mechanism (2) includes a first pump body (3), an inlet pipe (4) and a drain pipe (5), and the two ends of the first pump body (3) are connected to the inlet pipe (4) and the drain pipe (5) respectively through flanges, and the bottom of the drain pipe (5) is connected to the inlet end (12) through a flange.

3. The municipal engineering wastewater multi-stage filtration device according to claim 1, characterized in that, The drainage mechanism (8) consists of a second pump body (9) and a water outlet pipe (10), and one end of the second pump body (9) is connected to the drainage end (11) by a flange, and the other end of the second pump body (9) is connected to the water outlet pipe (10) by a flange.

4. A multi-stage sewage filtration device for municipal engineering according to claim 1, characterized in that, The filter tank (1) has two slag outlets (7) on one side, and each of the two slag outlets (7) has a slag removal window (6) on one side. The two slag outlets (7) are located above the first filter plate (13) and the second filter plate (14), respectively.

5. A multi-stage sewage filtration device for municipal engineering according to claim 1, characterized in that, The anti-clogging mechanism (15) includes a vertical moving assembly, a shaft (31), a transmission assembly, and an anti-clogging assembly. The vertical moving assembly consists of two support plates (17), a rotating shaft (18), multiple rotating blades (19), two turntables (20), two pins (22), two bushings (21), and two shaft plates (23). One end of the two support plates (17) is bolted to the inner wall of the filter tank (1). The two support plates (17) and the rotating shaft (18) are rotatably connected by bearings. The multiple rotating blades (19) are fixed at equal intervals on the outer circumference of the rotating shaft (18). Both ends are connected to the turntable (20) by bolts. One side of the turntable (20) is fixedly connected to the pin (22). The bushing (21) is rotated and sleeved on the outer wall of the pin (22). The bottom of the pin (22) is connected to the top of the shaft plate (23) by hinge. A through hole is provided between the top of the first filter plate (13) and the top of the second filter plate (14). The two through holes are slidably connected to the shaft (31). A connecting plate (24) is welded to both sides of the shaft (31) near the top. One side of the top of the connecting plate (24) is connected to the bottom of the shaft plate (23) by hinge.

6. A multi-stage sewage filtration device for municipal engineering according to claim 5, characterized in that, The anti-clogging assembly includes an anti-clogging frame (27), a sliding plate (34), an elastic plate (28), and an anti-clogging plate (25). Both sides of the anti-clogging frame (27) are bolted to rotating rods (29). One end of the rotating rod (29) is rotatably connected to the inner wall of the filter tank (1) via a bearing. A pull-out groove (32) is provided on one side of the anti-clogging frame (27). A sliding plate (34) is slidably connected to the inner wall of the pull-out groove (32). One side of the sliding plate (34) is connected to the pull-out groove (25). A sliding plate spring (33) is welded between 32), one side of the sliding plate (34) is welded to the elastic plate (28), the other side of the elastic plate (28) is fixedly connected to the anti-blocking plate (25), the top of the anti-blocking plate (25) is provided with multiple scrapers (26), the scrapers (26) are made of elastic material, the anti-blocking frame (27) is connected to the shaft (31) through a transmission assembly, the outer wall of the rotating rod (29) is fixed with a guide plate (30), and the guide plate (30) is inclined.

7. A multi-stage sewage filtration device for municipal engineering according to claim 6, characterized in that, The transmission assembly consists of a gear shaft (35), a gear (36) and a rack (37). The two ends of the gear shaft (35) are rotatably connected to the anti-blocking frame (27) through bearings. The gear (36) is fixedly sleeved on the outer circumference of the gear shaft (35). The shaft (31) has rack grooves on both sides. The inner wall of the rack groove is fixedly connected to the rack (37). The rack (37) meshes with the gear (36).

8. A multi-stage sewage filtration device for municipal engineering according to claim 5, characterized in that, The bottom of the shaft (31) is provided with a spraying mechanism (16), and the spraying mechanism (16) cooperates with the anti-blocking component.

9. A multi-stage sewage filtration device for municipal engineering according to claim 8, characterized in that, The injection mechanism (16) includes a pressure plate (38), a compression bladder (39), a pad (40), and multiple connecting pipes (41). The top of the pressure plate (38) is fixedly connected to the bottom of the shaft (31). The pad (40) is fixed to the bottom of the inner wall of the filter tank (1) by bolts. The compression bladder (39) is located between the bottom of the pressure plate (38) and the top of the pad (40). Multiple injection holes are provided through one side of the pad (40) and between the compression bladder (39). The inner wall of the injection hole is fixed with a connecting pipe (41). An injection pipe (42) is provided at the top of the connecting pipe (41). An injection nozzle (43) is provided at the top of the injection pipe (42).

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