Sludge filtering device for sewage treatment

Abstract

The invention relates to the technical field of sludge treatment, and discloses a sludge filtering device for sewage treatment, the center of the bottom of a sedimentation tank is fixedly provided with a central column, the outer side of the central column is rotatably provided with a rotary drum, and the outer side of the rotary drum is fixedly provided with three annularly arranged curved surface scraping strips. Meanwhile, a spiral packing auger sheet which is always driven by a conveying servo motor is arranged in the sludge box, and the spiral packing auger sheet is also inclined, so that the sludge in the sludge box can be continuously outwards conveyed into the treatment box; then a hydraulic rod A pushes a pressing plate to slide in the treatment box, the pressing plate extrudes sludge in the treatment box, residual water is discharged out from through holes in the two sides of the treatment box, after the sludge is extruded into blocks, two sealing doors are opened by controlling a hydraulic rod B, the hydraulic rod A continuously pushes the pressing plate to slide, and the sludge blocks can be pushed out of the treatment box; in the process, under the condition that sewage is not discharged, sewage sediment mud can be filtered and compressed into blocks.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to a sludge filtering device for sewage treatment. Background Art

[0002] Sludge filtration is an important step in sewage treatment, which aims to separate suspended solids (including organic and inorganic substances) from water in sewage, thereby purifying water quality and reducing the volume of sludge for subsequent treatment and disposal.

[0003] Traditionally, the sludge in sewage is treated by discharging the upper sewage into the next sedimentation tank, and then collecting and squeezing the sludge left in the sedimentation tank. In this treatment process, a large amount of sludge slurry will be discharged with the sewage, which increases the difficulty of the next treatment process. For this reason, the present application proposes a device that can filter and compress sewage sedimentation sludge without discharging sewage, so as to improve the rapid treatment of sludge. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a sludge filtering device for sewage treatment, which has the advantage of filtering and compressing sewage sludge without discharging sewage, thereby solving the above-mentioned problems.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of filtering and compressing sewage sludge without discharging sewage, the present invention provides the following technical solutions: a sludge filtering device for sewage treatment, comprising a base, a support column is fixedly installed on the top of the base, a sedimentation tank is fixedly installed on the top of the support column, a sewage discharge hole is opened at the bottom of the sedimentation tank, a central column is fixedly installed at the bottom center of the sedimentation tank, a rotating drum is rotatably installed on the outer side of the central column, three annularly arranged curved scraping strips are fixedly installed on the outer side of the rotating drum, an inner gear ring is fixedly installed on the inner wall of the top opening of the rotating drum, a gear is meshed inside the inner gear ring, the axis of the gear is fixedly installed to the output end of a driving servo motor, the driving servo motor is fixedly installed on the top of the central column through a bracket, and a cover plate is fixedly installed on the top of the rotating drum by bolts.

[0008] Preferably, a sludge box is fixedly installed at the bottom of the sewage discharge hole, the inner bottom wall of the sludge box is inclined, a rotating shaft is rotatably installed inside the sludge box, a spiral auger piece is fixedly installed on the outer side of the rotating shaft, a conveying servo motor is fixedly installed on the side of the sludge box, the output end of the conveying servo motor is fixedly installed on one end of the rotating shaft, a conveying hole corresponding to the spiral auger piece is opened on the side of the other end of the sludge box, a focusing cover is fixedly installed on the side of the sludge box, a bent pipe is fixedly installed on the side of the focusing cover, and a processing box is fixedly installed on the bottom of the bent pipe.

[0009] Preferably, a hydraulic rod A is fixedly installed on the side of the processing box, a pressure plate is fixedly installed on the output end of the hydraulic rod A, and the pressure plate is slidably installed on the inner wall of the processing box. Through holes are opened on both sides of the processing box, and side guide boxes are fixedly installed on both sides of the processing box and at the positions of the through holes. A bottom guide box is fixedly installed between the two side guide boxes, and the bottom guide box is fixedly installed on the bottom of the processing box. The bottom of the bottom guide box is a trapezoidal concentrating box, and a return pipe is fixedly installed on the bottom of the trapezoidal concentrating box, and long filter strips are movably interspersed inside the side guide box.

[0010] Preferably, a collecting tank is fixedly installed on the top of the base, and one end of the return pipe away from the trapezoidal concentration box is inserted into the interior of the collecting tank. A booster water pump is fixedly installed on the inner bottom wall of the collecting tank, and one end of a drain pipe is fixedly installed on the drainage end of the booster water pump, and a nozzle is fixedly installed on the other end of the drain pipe, and the nozzle penetrates and extends into the interior of the sludge box.

[0011] Preferably, a U-shaped frame is fixedly installed on the front and rear surfaces of the processing box, a hydraulic rod B is movably installed on one end of the U-shaped frame through a U-shaped seat, a triangular block is movably installed on the output end of the hydraulic rod B through the U-shaped seat, a special-shaped block is fixedly installed on the side of the triangular block, a sealing door is fixedly installed on one end of the special-shaped block, the sealing door and the side opening of the processing box are matched with each other, and the other end of the special-shaped block is movably installed on the side of the processing box through a support.

[0012] Preferably, a column is fixedly installed at the bottom of the processing box, and a guide plate is fixedly installed on the side of the column located on the outside, the guide plate is inclined, and the guide plate is located below the opening of the processing box.

[0013] Preferably, the rotating shaft and the spiral auger piece are inclined, and the axis lines of the rotating shaft and the spiral auger piece are parallel to the bottom inclined surface of the sludge box.

[0014] Preferably, the bottom of the curved scraper strip fits the inner bottom wall of the sedimentation tank, and the nozzle is located above the spiral auger blade.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a sludge filtering device for sewage treatment, which has the following beneficial effects:

[0017] 1. The sludge filtering device for sewage treatment, the sludge settles to the bottom of the sedimentation tank, and the gear is driven by the private service motor to rotate. The gear rotates with the inner gear ring, and then the drum and the curved scraper are rotated. The rotation of the curved scraper can scrape the sludge at the bottom of the tank into the sludge box. The inner bottom wall of the sludge box is inclined, which is convenient for the sludge to slide; at the same time, there is a spiral auger piece driven by the private service motor in the sludge box, and the spiral auger piece is also inclined, which can continuously transport the sludge in the sludge box to the treatment box; then the hydraulic rod A pushes the pressing plate to slide in the treatment box, and the pressing plate squeezes the sludge in the treatment box, and the residual water is discharged from the through holes on both sides of the treatment box. After the sludge is squeezed into blocks, the two sealing doors are opened by controlling the hydraulic rod B, and the hydraulic rod A is used to continuously push the pressing plate to slide, so that the mud blocks can be pushed out of the treatment box. In this process, the sewage sedimentation sludge can also be filtered and compressed into blocks without discharging sewage.

[0018] 2. In the sludge filtering device for sewage treatment, during the process of sludge being compressed into blocks, the residual water enters the side guide box through the through hole, and long filter screens are interspersed up and down in the side guide box, which can prevent the sludge from seeping out and allow the sludge to seep. Finally, the residual water enters the collection pool through the bottom guide box, the trapezoidal concentration box, and the reflux pipe. The residual water is extracted by a booster water pump and finally ejected from the nozzle, which is located above the spiral auger piece. The pressurized injection can loosen the sludge in the sludge box and cooperate with the rotating spiral auger piece to improve the transportation of the precipitated sludge and recycle the compressed residual water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the cutaway structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the exploded structure of the support column, the rotating drum, the internal gear ring and the gear of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the sludge box, the processing box and the collection tank of the present invention;

[0024] Figure 6 It is a partial structural schematic diagram of the sludge box, treatment box and collection tank of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-section structure of the sludge box and the treatment box of the present invention;

[0026] Figure 8 It is a schematic diagram of the exploded structure of the sludge box and the treatment box of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the hydraulic rod A, the pressure plate, the side guide box and the sealing door of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the side guide box, the bottom guide box, the trapezoidal centralizing box and the long filter screen of the present invention;

[0029] Fig.11 It is a schematic structural diagram of the hydraulic rod B, the special-shaped block and the sealing door of the present invention.

[0030] In the figure: 1. base; 2. support column; 3. sedimentation tank; 4. drainage hole; 5. center column; 6. rotating drum; 7. curved scraper; 8. inner gear ring; 9. gear; 10. driving servo motor; 11. cover plate;

[0031] 12. Sludge box; 13. Rotating shaft; 14. Screw auger; 15. Conveying servo motor; 16. Central cover; 17. Bend pipe;

[0032] 18. Processing box; 19. Hydraulic rod A; 20. Pressing plate; 21. Through hole; 22. Side guide box; 23. Bottom guide box; 24. Trapezoidal centralizing box; 25. Return pipe; 26. Collection tank; 27. Booster pump; 28. Drain pipe; 29. ​​Sprinkler; 30. Strip filter;

[0033] 31. U-shaped frame; 32. U-shaped seat; 33. Hydraulic rod B; 34. Triangular block; 35. Special-shaped block; 36. Sealed door; 37. Column; 38. Guide plate. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] See also Figure 1-2A sludge filtering device for sewage treatment comprises a base 1, a supporting column 2 is fixedly installed on the top of the base 1, a sedimentation tank 3 is fixedly installed on the top of the supporting column 2, a sewage discharge hole 4 is opened at the bottom of the sedimentation tank 3, and the sewage discharge hole 4 is in a strip shape. A central column 5 is fixedly installed at the bottom center of the sedimentation tank 3, a rotating drum 6 is rotatably installed on the outer side of the central column 5, and three annularly arranged curved scraping strips 7 are fixedly installed on the outer side of the rotating drum 6, and the bottom of the curved scraping strip 7 is in contact with the inner bottom wall of the sedimentation tank 3. The rotating curved scraping strip 7 can push the sludge settled at the bottom of the tank into the sewage discharge hole 4.

[0036] See also Figure 1-2 An inner gear ring 8 is fixedly mounted on the inner wall of the top opening of the rotating drum 6, and a gear 9 is meshed inside the inner gear ring 8. The axis of the gear 9 is fixedly mounted on the output end of the driving servo motor 10. The driving servo motor 10 is fixedly mounted on the top of the central column 5 through a bracket, and a cover plate 11 is fixedly mounted on the top of the rotating drum 6 through bolts. The gear 9 is rotated by the driving servo motor 10, and the gear 9 is rotated by the inner gear ring 8, and then the rotating drum 6 rotates around the central column 5, and then the curved scraper 7 follows the rotation to scrape mud.

[0037] See also Figure 3-8 A sludge box 12 is fixedly installed at the bottom of the sewage discharge hole 4, and the inner bottom wall of the sludge box 12 is inclined so that the sludge can slide under gravity; a rotating shaft 13 is rotatably installed inside the sludge box 12, and a spiral auger piece 14 is fixedly installed on the outer side of the rotating shaft 13, and the rotating shaft 13 and the spiral auger piece 14 are inclined, and the axes of the rotating shaft 13 and the spiral auger piece 14 are parallel to the bottom inclined surface of the sludge box 12. The rotating threaded auger piece 14 can spirally convey the sludge in the sludge box 12.

[0038] See also Figure 3-8 A conveying servo motor 15 is fixedly installed on the side of the sludge box 12, and the output end of the conveying servo motor 15 is fixedly installed with one end of the rotating shaft 13. A conveying hole corresponding to the spiral auger piece 14 is opened on the side of the other end of the sludge box 12. A centralizing cover 16 is fixedly installed on the side of the sludge box 12, and a curved pipe 17 is fixedly installed on the side of the centralizing cover 16. A processing box 18 is fixedly installed at the bottom of the curved pipe 17. The conveying servo motor 15 can rotate the threaded auger piece 14, and the spiral auger piece 14 can convey the sludge to the inside of the processing box 18.

[0039] See also Figure 8-11A hydraulic rod A19 is fixedly installed on the side of the processing box 18, and a pressure plate 20 is fixedly installed on the output end of the hydraulic rod A19. The pressure plate 20 is slidably installed on the inner wall of the processing box 18. Through holes 21 are opened on both sides of the processing box 18. Side guide boxes 22 are fixedly installed on both sides of the processing box 18 and located at the positions of the through holes 21. A bottom guide box 23 is fixedly installed between the two side guide boxes 22. The bottom guide box 23 is fixedly installed on the bottom of the processing box 18. A trapezoidal concentrating box 24 is fixedly installed at the bottom of the trapezoidal concentrating box 24. A return pipe 25 is fixedly installed at the bottom of the trapezoidal concentrating box 24. A long filter screen 30 is movably inserted into the interior of the side guide box 22.

[0040] See also Figure 8-11 A collection tank 26 is fixedly installed on the top of the base 1, and one end of the return pipe 25 away from the trapezoidal concentration box 24 is inserted into the interior of the collection tank 26. A booster water pump 27 is fixedly installed on the inner bottom wall of the collection tank 26. One end of a drainage pipe 28 is fixedly installed on the drainage end of the booster water pump 27, and a nozzle 29 is fixedly installed on the other end of the drainage pipe 28. The nozzle 29 penetrates and extends into the interior of the sludge box 12. The nozzle 29 is located above the spiral auger piece 14. The residual water in the collection tank 26 can be extracted by the booster water pump 27, and the residual water is finally sprayed from the nozzle 29 into the interior of the sludge box 12, so that the sludge can be loosened.

[0041] See also Figure 8-11 A U-shaped frame 31 is fixedly installed on the front and rear surfaces of the processing box 18, and a hydraulic rod B33 is movably installed on one end of the U-shaped frame 31 through a U-shaped seat 32. A triangular block 34 is movably installed on the output end of the hydraulic rod B33 through the U-shaped seat 32. A special-shaped block 35 is fixedly installed on the side of the triangular block 34, and a sealing door 36 is fixedly installed on one end of the special-shaped block 35. The sealing door 36 is consistent with the side opening of the processing box 18, and the other end of the special-shaped block 35 is movably installed on the side of the processing box 18 through a support.

[0042] See also Figure 8 A column 37 is fixedly installed at the bottom of the processing box 18, and a guide plate 38 is fixedly installed on the side of the column 37 located on the outside. The guide plate 38 is inclined and is located below the opening of the processing box 18.

[0043] Working principle: When in use, the sludge settles to the bottom of the sedimentation tank 3, and the gear 9 is driven to rotate by the private service motor 10. The gear 9 rotates with the inner gear ring 8, and then the drum 6 and the curved scraper 7 rotate. The rotation of the curved scraper 7 can scrape the sludge at the bottom of the tank into the sludge box 12. The inner bottom wall of the sludge box 12 is inclined to facilitate the sliding of the sludge; at the same time, there is a spiral auger piece 14 in the sludge box 12 that is driven by the private service motor 15. The spiral auger piece 14 is also inclined, which can move the sludge in the sludge box 12 away from the sludge box 12. The sludge is continuously transported outward to the treatment box 18; the hydraulic rod A19 then pushes the pressing plate 20 to slide in the treatment box 18, and the pressing plate 20 squeezes the sludge in the treatment box 18, and the residual water is discharged from the through holes 21 on both sides of the treatment box 18. After the sludge is squeezed into blocks, the two sealing doors 36 are opened by controlling the hydraulic rod B33, and the hydraulic rod A19 is used to continuously push the pressing plate 20 to slide, so that the mud blocks can be pushed out of the treatment box 18. In this process, the sewage sedimentation sludge can also be filtered and compressed into blocks without discharging sewage.

[0044] During the sludge compression process, the residual water enters the side guide box 22 through the through hole 21, and long filter screens 30 are inserted up and down in the side guide box 22, which can prevent the sludge from seeping out and allow the sludge to seep. Finally, the residual water enters the collection tank 26 through the bottom guide box 23, the trapezoidal concentration box 24, and the return pipe 25. The booster water pump 27 is used to extract the residual water, and the residual water is finally ejected from the nozzle 29. The nozzle 29 is located above the spiral auger piece 14. The pressurized injection can loosen the sludge in the sludge box 12, cooperate with the rotating spiral auger piece 14, improve the transportation of the precipitated sludge, and can also recycle the compressed residual water.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge filtering device for sewage treatment, comprising a base (1), a support column (2) fixedly mounted on the top of the base (1), a sedimentation tank (3) fixedly mounted on the top of the support column (2), a sewage discharge hole (4) opened at the bottom of the sedimentation tank (3), characterized in that: A central column (5) is fixedly installed at the bottom center of the sedimentation tank (3), a rotating drum (6) is rotatably installed on the outer side of the central column (5), three curved scraper strips (7) arranged in a ring shape are fixedly installed on the outer side of the rotating drum (6), an inner gear ring (8) is fixedly installed on the inner wall of the top opening of the rotating drum (6), a gear (9) is meshed inside the inner gear ring (8), the axis of the gear (9) is fixedly installed with the output end of the driving servo motor (10), the driving servo motor (10) is fixedly installed on the top of the central column (5) through a bracket, and a cover plate (11) is fixedly installed on the top of the rotating drum (6) by bolts.

2. A sludge filtering device for sewage treatment according to claim 1, characterized in that: A sludge box (12) is fixedly mounted at the bottom of the sewage discharge hole (4), the inner bottom wall of the sludge box (12) is inclined, a rotating shaft (13) is rotatably mounted inside the sludge box (12), a spiral auger piece (14) is fixedly mounted on the outer side of the rotating shaft (13), a conveying servo motor (15) is fixedly mounted on the side of the sludge box (12), the output end of the conveying servo motor (15) is fixedly mounted on one end of the rotating shaft (13), a conveying hole corresponding to the spiral auger piece (14) is opened on the side of the other end of the sludge box (12), a concentrating cover (16) is fixedly mounted on the side of the concentrating cover (16), a bent pipe (17) is fixedly mounted on the side of the bent pipe (17), and a processing box (18) is fixedly mounted on the bottom of the bent pipe (17).

3. A sludge filtering device for sewage treatment according to claim 2, characterized in that: A hydraulic rod A (19) is fixedly mounted on the side of the processing box (18), a pressure plate (20) is fixedly mounted on the output end of the hydraulic rod A (19), and the pressure plate (20) is slidably mounted on the inner wall of the processing box (18). Through holes (21) are provided on both sides of the processing box (18), and side guide boxes (22) are fixedly mounted on both sides of the processing box (18) and at the positions of the through holes (21). A bottom guide box (23) is fixedly mounted between the two side guide boxes (22), and the bottom guide box (23) is fixedly mounted on the bottom of the processing box (18). A trapezoidal centralizing box (24) is fixedly mounted on the bottom of the trapezoidal centralizing box (24). A return pipe (25) is fixedly mounted on the bottom of the side guide box (22). A long filter (30) is movably inserted into the interior of the side guide box (22).

4. A sludge filtering device for sewage treatment according to claim 3, characterized in that: A collecting tank (26) is fixedly mounted on the top of the base (1); one end of the return pipe (25) away from the trapezoidal collecting box (24) is inserted into the interior of the collecting tank (26); a booster water pump (27) is fixedly mounted on the inner bottom wall of the collecting tank (26); one end of a drain pipe (28) is fixedly mounted on the drain end of the booster water pump (27); a nozzle (29) is fixedly mounted on the other end of the drain pipe (28); and the nozzle (29) penetrates and extends into the interior of the sludge box (12).

5. A sludge filtering device for sewage treatment according to claim 3, characterized in that: A U-shaped frame (31) is fixedly mounted on the front and rear surfaces of the processing box (18); a hydraulic rod B (33) is movably mounted on one end of the U-shaped frame (31) via a U-shaped seat (32); a triangular block (34) is movably mounted on the output end of the hydraulic rod B (33) via the U-shaped seat (32); a special-shaped block (35) is fixedly mounted on the side of the triangular block (34); a sealing door (36) is fixedly mounted on one end of the special-shaped block (35); the sealing door (36) and the side opening of the processing box (18) are mutually matched; and the other end of the special-shaped block (35) is movably mounted on the side of the processing box (18) via a support.

6. A sludge filtering device for sewage treatment according to claim 5, characterized in that: A column (37) is fixedly installed at the bottom of the processing box (18), and a guide plate (38) is fixedly installed on the side of the column (37) located on the outside. The guide plate (38) is inclined and is located below the opening of the processing box (18).

7. A sludge filtering device for sewage treatment according to claim 2, characterized in that: The rotating shaft (13) and the spiral auger piece (14) are inclined, and the axes of the rotating shaft (13) and the spiral auger piece (14) are parallel to the bottom inclined surface of the sludge box (12).

8. A sludge filtering device for sewage treatment according to claim 4, characterized in that: The bottom of the curved scraper strip (7) is in contact with the inner bottom wall of the sedimentation tank (3), and the nozzle (29) is located above the spiral auger blade (14).

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