Dynamic cleaning device and method for industrial wastewater dephosphorization sedimentation tank

Abstract

The invention discloses a dynamic cleaning device and method for an industrial wastewater dephosphorization sedimentation tank and relates to the technical field of industrial wastewater treatment.The dynamic cleaning device is characterized in that a collecting tank is formed in the lower portion of a sedimentation tank body, the sedimentation tank body is fixedly connected with a dredge pump, a collecting pipe is arranged at the output end of the dredge pump, and one end of the collecting pipe extends into the collecting tank; under the combined action of a pushing block, a fixing plate and a blocking plate, after too many sediments cross over a scraper, the sediments and water enter a collecting frame together, under the combined blocking of the fixing plate and the blocking plate, the speed of water flowing in the collecting frame is slowed down, when water flows through a filtering structure, too many sediments cannot be driven to flow through the filtering structure, and the filtering effect is good. In the upward moving process of the push block, sediments accumulated on the surface of the push block can be pushed out, the push block can drive the cleaning brush to move upwards when moving upwards, the cleaning brush can brush the sediments attached to the filtering structure when moving upwards, and smoothness of the filtering structure is kept.

Description

Technical Field

[0001] The invention relates to the technical field of industrial wastewater treatment, and in particular to a dynamic cleaning device and method for an industrial wastewater dephosphorization sedimentation tank. Background Art

[0002] Sedimentation tank is a kind of structure that uses sedimentation to remove suspended solids in water. Sedimentation tank is widely used in wastewater treatment. There are many types of it. According to the direction of water flow in the tank, it can be divided into three types: horizontal flow, vertical flow and radial flow. It consists of three parts: inlet and outlet, water flow part and sludge bucket. Horizontal flow sedimentation tank is mostly built with concrete, but it can also be made of masonry structure, or earthen tank lined with masonry. If a scraper is added or mechanical removal of sediment with large specific gravity is adopted, the working efficiency of the sedimentation tank can be improved. Phosphorus removal technology mainly includes chemical phosphorus removal and biological phosphorus removal. Chemical phosphorus removal forms insoluble phosphate precipitates by adding chemical agents, and finally removes phosphorus from sewage by solid-liquid separation. Its advantages are simple operation, good phosphorus removal effect, high and stable treatment efficiency, and no secondary pollution.

[0003] The physical sedimentation step is generally carried out in a sedimentation tank. The waste liquid is left to stand in the sedimentation tank for a preset time. After the preset time, the sediment settles to the bottom of the tank, and then the sediment at the bottom of the sedimentation tank is scraped off by a scraping device and collected. When the scraper is scraping the sediment, as the scraping time increases, the sediment accumulates on one side of the scraper, the amount of sediment accumulation increases, and the sludge easily crosses the scraper.

[0004] While scraping, as the scraper moves, the sediment accumulated on the scraper gradually increases. When the sediment accumulates too much, the accumulated impurities may overflow the scraper and fall on the side that has been scraped, resulting in poor scraping effect.

[0005] The existing treatment method is to raise the scraper to prevent impurities from overflowing the scraper. However, raising the scraper will not only increase the "resistance area" in the vertical direction when the scraper is too high and moves in the sedimentation tank, but also disturb the water in the sedimentation tank. A large amount of water will come into contact with the sludge sediment and then rise along the "high-position" scraper and pass over the "high-position" scraper, making the water turbid, which is not conducive to sedimentation in the sedimentation tank.

[0006] In view of the above situation, reducing the water resistance during sludge scraping and cleaning and avoiding the large turbidity impact on the filtered water during sludge scraping and cleaning have become problems that need to be solved. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a dynamic cleaning device and method for an industrial wastewater dephosphorization sedimentation tank, which realizes that when too much sediment passes over the scraper, the sediment will fall into a collecting frame. When the scraper moves to the collecting tank, the pushing block will push the sediment accumulated in the collecting frame upward, push the sediment out, and drop it into the collecting tank, thereby reducing the water resistance during sludge scraping and cleaning, and avoiding the large turbidity impact on the filtered water during sludge scraping and cleaning.

[0008] To achieve the above purpose, the present invention provides a dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank, the structure of which is as follows: It includes a sedimentation tank body and a sludge suction pump. A collection tank is provided below the sedimentation tank body. The sedimentation tank body is fixedly connected to the sludge suction pump. A collection pipe is provided at the output end of the sludge suction pump. One end of the collection pipe extends into the collection tank. A collection frame is slidably provided inside the sedimentation tank body. The sedimentation tank body is provided with a driving component for driving the collection frame to move.

[0009] Taking the collecting frame as the reference: the sedimentation tank body on one side of the collecting tank is the sedimentation area, and the other side of the collecting frame is the filtering structure.

[0010] A driving mechanism is provided on the outside of the sedimentation tank body, and the driving mechanism includes a driving motor, etc. A collecting frame is slidably provided inside the sedimentation tank body. A scraper is fixedly provided on the side of the collecting frame facing the collecting tank, a push block is provided inside the collecting frame, and an inclined blocking plate is fixedly connected to the top of the push block. A filtering structure is provided on the side of the collecting frame away from the scraper, and a cleaning brush in contact with the surface of the filtering structure is fixedly provided on the side of the blocking plate facing the filtering structure. A telescopic assembly is fixedly provided inside the collecting frame, and a telescopic rod is connected to one end of the telescopic assembly, and one end of the telescopic rod passes through the blocking plate and is fixedly connected to the pushing block. A fixed plate is fixedly provided inside the collecting frame, and an auxiliary rod is fixedly provided at the bottom of the fixed plate, and the auxiliary rod is fixedly connected to the pushing block.

[0011] Taking the collecting frame as the reference: the area between the scraper and the fixed plate is the first shielding area, the upper surface of the push block is the sludge temporary storage area between the fixed plates, the area between the fixed plate and the blocking plate is the first flow area, and the area between the blocking plate and the filtering structure is the filtering flow area.

[0012] As a preferred technical solution of the present invention, the upper side of the push block is a first inclined surface, and the first inclined surface is located at the bottom of the sludge temporary storage area. When the telescopic assembly drives the push block to rise to the highest point position: the lowest point position of the first inclined surface is aligned with the highest point position of the scraper.

[0013] As a preferred technical solution of the present invention, the filtering structure adopts a stainless steel filter mesh structure.

[0014] As a preferred technical solution of the present invention, the driving assembly includes a limit rod and a threaded rod arranged inside the sedimentation tank body, one end of the threaded rod is connected to a driving motor fixedly arranged on the outside of the sedimentation tank body, and a first connecting rod and a second connecting rod are fixedly connected to the surface of the collecting frame, the first connecting rod is threadedly connected to the threaded rod, and the second connecting rod is movably connected to the limit rod.

[0015] As a preferred technical solution of the present invention, a moving opening for the movement of the fixed plate is opened on the top of the collecting frame, wherein, when the fixed plate is at the lowest point of its vertical travel range: the upper side end of the fixed plate protrudes from the moving opening, and a rubber scraper is arranged on the inside of the moving opening to be in extrusion contact with the fixed plate.

[0016] As a preferred technical solution of the present invention, the blocking plate is arranged to be tilted downward, wherein the horizontal height of one side of the blocking plate connected to the top of the push block is higher than the horizontal height of one side of the blocking plate adjacent to the fixed plate.

[0017] The present invention also provides a method for dynamically cleaning an industrial wastewater dephosphorization sedimentation tank, comprising the following steps: S1. Add chemical agents into the sedimentation tank to separate the phosphorus in the wastewater and form precipitates, which will accumulate at the bottom of the sedimentation tank.

[0018] S2. When it is necessary to clean the sediment, start the driving motor, a threaded rod is provided for rotation inside the sedimentation tank body, the output end of the driving motor is fixedly connected to the threaded rod, a first connecting rod and a second connecting rod are fixedly provided on the top of the collecting frame, the first connecting rod is threadedly connected to the threaded rod, a limit rod is fixedly provided inside the sedimentation tank body, the second connecting rod is slidably connected to the limit rod, the driving motor drives the collecting frame to move toward the collecting trough, the collecting frame will drive the scraper to move when moving, the scraper can scrape the sediment at the bottom of the sedimentation tank body when moving, as the sediment scraped by the scraper gradually increases, part of the sediment will pass over the scraper and fall into the collecting frame, the sediment and water that pass over the scraper will first pass through the first shielding area, and then fall into the sludge temporary storage area, most of the sediment will be retained in the sludge temporary storage area under the shielding of the blocking plate, the water flows along the first flow area into the filtering flow area, a small part of the sediment passes through the first flow area and the filtering flow area along with the water flow direction, and is blocked by the filtering structure.

[0019] S3. When the collecting frame moves to the edge of the collecting trough, the telescopic assembly drives the fixed plate to move upward, and the fixed plate will move out of the collecting frame from the moving opening. During the movement of the fixed plate, the moving opening will scrape off the sediment attached to the surface of the fixed plate and drop it onto the surface of the pushing block. The upward movement of the pushing block will push out the sediment accumulated in the collecting frame from the scraper, and the scraper will push the sediment into the collecting trough together. During the upward movement of the pushing block, the cleaning brush will follow the movement of the pushing block to scrape off the sediment on the surface of the filtering structure. The scraped sediment will slide down along the blocking plate to the sludge temporary storage area, slide along the first inclined surface, and be discharged from the upper side of the scraper.

[0020] S4. After all the sediment is scraped into the collection tank, start the sludge suction pump, the collection pipe sucks all the sediment and discharges it from one side of the sludge suction pump.

[0021] The present invention provides a dynamic cleaning device and method for an industrial wastewater dephosphorization sedimentation tank, which has the following beneficial effects: The present invention, through the joint action of the push block, the fixed plate and the blocking plate, after too much sediment passes over the scraper, the sediment and water will enter the collecting frame together, under the joint blocking of the fixed plate and the blocking plate, the water will slow down when flowing in the collecting frame, and will not drive too much sediment to flow through the filtering structure when flowing through the filtering structure, and in the process of the push block moving upward, the sediment accumulated on the surface of the push block will be pushed out, and the push block will drive the cleaning brush to move upward when moving upward, and the cleaning brush will brush the sediment attached to the filtering structure when moving upward, so as to keep the filtering structure unobstructed, so that not only can the sediment passing over the scraper be stored, so that the sediment will not fall on the scraped clean side, but also the collecting frame and the scraper will not disturb the water in the sedimentation tank body too much when moving, causing the water body to be turbid, and at the same time, it will not increase too much water resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the sedimentation tank body of the present invention.

[0025] Figure 4 It is a schematic diagram of the enlarged structure of the collection frame of the present invention.

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the collection frame of the present invention.

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the collecting frame and the fixing plate of the present invention.

[0028] In the figure: 1. sedimentation tank body, 11. sedimentation area, 12. filtering structure; 2. collecting tank; 3. sludge suction pump; 31. collecting pipe; 4. driving assembly, 41. limiting rod, 42. threaded rod, 43. driving motor, 44. first connecting rod, 45. second connecting rod; 5. collecting frame, 51. filtering structure, 52. telescopic assembly, 53. telescopic rod, 54. pushing block, 541. first inclined plane, 55. auxiliary rod, 56. blocking plate, 57. cleaning brush, 58. moving port; 6. scraper, 61. first shielding area, 62. sludge temporary storage area, 63. first circulation area, 64. filtering circulation area; 7. fixing plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] Embodiment 1: The present invention designs a dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank, which mainly includes the following contents: Combination Figure 1 , Figure 2 , Figure 3 A collecting tank 2 is provided at the bottom of the sedimentation tank body 1, a sludge pump 3 is provided on the outside of the sedimentation tank body 1, a collecting pipe 31 is provided at the output end of the sludge pump 3, and one end of the collecting pipe 31 extends into the collecting tank 2, a collecting frame 5 is slidably provided inside the sedimentation tank body 1, the sedimentation tank body 1 is provided with a driving assembly 4 for driving the collecting frame 5 to move, the driving assembly 4 includes a limiting rod 41 and a threaded rod 42 arranged inside the sedimentation tank body 1, one end of the threaded rod 42 is connected to a driving motor 43 fixedly arranged on the outside of the sedimentation tank body 1, a first connecting rod 44 and a second connecting rod 45 are fixedly connected to the surface of the collecting frame 5, the first connecting rod 44 is threadedly connected to the threaded rod 42, and the second connecting rod 45 is movably connected to the limiting rod 41.

[0031] Combination Figure 4 , Figure 5 , Figure 6 , taking the collecting frame 5 as a reference: the sedimentation tank body 1 located on one side of the collecting tank 2 is the sedimentation area 11 , and the sedimentation tank body 1 area on the other side of the collecting frame 5 is the filtering structure 12 .

[0032] A scraper 6 is fixedly provided on the side of the collecting frame 5 facing the collecting trough 2, a push block 54 is provided inside the collecting frame 5, a tilted blocking plate 56 is fixedly connected to the top of the push block 54, the blocking plate 56 is tilted downward, wherein the horizontal height of one side edge connected to the top of the blocking plate 56 and the push block 54 is higher than the horizontal height of one side edge adjacent to the blocking plate 56 and the fixed plate 7, a filtering structure 51 is provided on the side of the collecting frame 5 away from the scraper 6, the filtering structure 51 adopts a stainless steel filter mesh structure, and a cleaning brush 57 in contact with the surface of the filtering structure 51 is fixedly provided on the side of the blocking plate 56 facing the filtering structure 51.

[0033] A telescopic component 52 is fixedly arranged in the collecting frame 5, one end of the telescopic component 52 is connected to a telescopic rod 53, one end of the telescopic rod 53 passes through the blocking plate 56 and is fixedly connected to the push block 54, the upper side of the push block 54 is a first inclined surface 541, and the first inclined surface 541 is located at the bottom of the sludge temporary storage area 62. When the telescopic component 52 drives the push block 54 to rise to the highest point position: the lowest point position of the first inclined surface 541 is aligned with the highest point position of the scraper 6.

[0034] A fixing plate 7 is fixedly provided inside the collecting frame 5, an auxiliary rod 55 is fixedly provided at the bottom of the fixing plate 7, the auxiliary rod 55 is fixedly connected to the push block 54, and a moving opening 58 for the fixing plate 7 to move is provided on the top of the collecting frame 5, wherein, when the fixing plate 7 is at the lowest point of its vertical travel range: the upper side end of the fixing plate 7 protrudes from the moving opening 58, and a rubber scraper is arranged inside the moving opening 58 to be in extrusion contact with the fixing plate 7.

[0035] Taking the collecting frame 5 as a reference: the first shielding area 61 is between the scraper 6 and the fixed plate 7, the upper surface of the push block 54 is the sludge temporary storage area 62 between the fixed plate 7, the first flow area 63 is between the fixed plate 7 and the blocking plate 56, and the filter flow area 64 is between the blocking plate 56 and the filter structure 51.

[0036] Embodiment 2: In the present invention, a dynamic cleaning device and method for an industrial wastewater dephosphorization sedimentation tank is provided, and the specific working principle is as follows: First, chemical agents are added into the sedimentation tank body 1 to separate the phosphorus element in the wastewater to form precipitates, and the formed precipitates are accumulated at the bottom of the sedimentation tank body 1 .

[0037] Then, when it is necessary to clean the sediment, start the drive motor 43, and the drive motor 43 drives the collecting frame 5 to move toward the collecting tank 2. When the collecting frame 5 moves, it will drive the scraper 6 to move. When the scraper 6 moves, it can scrape the sediment at the bottom of the sedimentation tank body 1. As the amount of sediment scraped by the scraper 6 gradually increases, part of the sediment will pass over the scraper 6 and fall into the collecting frame 5. The sediment and water that pass over the scraper 6 will first pass through the first shielding area 61, and then fall into the sludge temporary storage area 62. The water flow continues to flow, driving a small amount of sediment to flow through the first flow area 63, and then flow through the filter flow area 64. The water flow flowing to the first flow area 63 and the filter flow area 64 will slow down, and then the water will flow out from the filter structure 51, and the sediment is blocked by the filter structure 51.

[0038] When the collecting frame 5 moves to the edge of the collecting tank 2, the telescopic assembly 52 drives the telescopic rod 53 to move upward, thereby driving the pushing block 54 and the auxiliary rod 55 to move upward. The upward movement of the auxiliary rod 55 will drive the fixed plate 7 to move upward, and the fixed plate 7 will move out of the collecting frame 5 from the moving opening 58. During the movement of the fixed plate 7, the moving opening 58 will scrape the sediment attached to the surface of the fixed plate 7 and drop it onto the surface of the pushing block 54. The upward movement of the pushing block 54 will push the sediment accumulated in the collecting frame 5 out from the scraper 6, and the scraper 6 will push the sediment into the collecting tank 2 together. During the upward movement of the pushing block 54, the cleaning brush 57 will follow the pushing block 54 to scrape off the sediment on the surface of the filtering structure 51. The scraped sediment will slide downward along the blocking plate 56 to the sludge temporary storage area 62, slide along the first inclined surface 541, and be discharged from the upper side of the scraper 6.

[0039] After all the sediments are scraped into the collecting tank 2 , the sludge suction pump 3 is started, and the collecting pipe 31 sucks all the sediments and discharges them from one side of the sludge suction pump 3 .

[0040] 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 dynamic cleaning device for an industrial wastewater dephosphorization sedimentation tank, comprising a sedimentation tank body (1) and a sludge suction pump (3), wherein a collecting tank (2) is provided below the sedimentation tank body (1), the sedimentation tank body (1) is fixedly connected to the sludge suction pump (3), a collecting pipe (31) is provided at the output end of the sludge suction pump (3), one end of the collecting pipe (31) extends into the collecting tank (2), and is characterized in that: A collecting frame (5) is slidably disposed inside the sedimentation tank body (1), and the sedimentation tank body (1) is provided with a driving component (4) for driving the collecting frame (5) to move; Taking the collecting frame (5) as a reference: the sedimentation tank body (1) located on one side of the collecting tank (2) is the sedimentation area (11), and the sedimentation tank body (1) area on the other side of the collecting frame (5) is the filtering structure (12); A scraper (6) is fixedly arranged on a side of the collecting frame (5) facing the collecting tank (2); a push block (54) is arranged inside the collecting frame (5); a blocking plate (56) is fixedly connected to the top of the pushing block (54) and arranged obliquely; a filtering structure (51) is arranged on a side of the collecting frame (5) away from the scraper (6); a cleaning brush (57) in contact with the surface of the filtering structure (51) is fixedly arranged on a side of the blocking plate (56) facing the filtering structure (51); A telescopic component (52) is fixedly arranged in the collection frame (5), one end of the telescopic component (52) is connected to a telescopic rod (53), and one end of the telescopic rod (53) passes through the blocking plate (56) and is fixedly connected to the push block (54); A fixing plate (7) is fixedly arranged inside the collecting frame (5), an auxiliary rod (55) is fixedly arranged at the bottom of the fixing plate (7), and the auxiliary rod (55) is fixedly connected to the pushing block (54); Taking the collecting frame (5) as a reference: the area between the scraper (6) and the fixed plate (7) is a first shielding area (61), the upper surface of the push block (54) is a sludge temporary storage area (62) between the fixed plate (7), the area between the fixed plate (7) and the blocking plate (56) is a first circulation area (63), and the area between the blocking plate (56) and the filtering structure (51) is a filtering circulation area (64).

2. The dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank according to claim 1 is characterized in that: The upper side of the push block (54) is a first inclined surface (541), and the first inclined surface (541) is located at the bottom of the sludge temporary storage area (62). When the telescopic component (52) drives the push block (54) to rise to the highest point, the lowest point of the first inclined surface (541) is aligned with the highest point of the scraper (6).

3. The dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank according to claim 1 is characterized in that: The filtering structure (51) adopts a stainless steel filtering mesh structure.

4. The dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank according to claim 1 is characterized in that: The driving assembly (4) comprises a limiting rod (41) and a threaded rod (42) arranged inside the sedimentation tank body (1); one end of the threaded rod (42) is connected to a driving motor (43) fixedly arranged outside the sedimentation tank body (1); a first connecting rod (44) and a second connecting rod (45) are fixedly connected to the surface of the collecting frame (5); the first connecting rod (44) is threadedly connected to the threaded rod (42); and the second connecting rod (45) is movably connected to the limiting rod (41).

5. The dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank according to claim 1 is characterized by: The top of the collecting frame (5) is provided with a moving opening (58) for the fixed plate (7) to move, wherein when the fixed plate (7) is at the lowest point of its vertical travel range: the upper side end of the fixed plate (7) protrudes from the moving opening (58), and a rubber scraper is arranged inside the moving opening (58) for being in pressure contact with the fixed plate (7).

6. The dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank according to claim 1, characterized in that: The blocking plate (56) is arranged to be tilted downward, wherein the horizontal height of one side of the blocking plate (56) connected to the top of the push block (54) is higher than the horizontal height of one side of the blocking plate (56) adjacent to the fixing plate (7).

7. A dynamic cleaning method for industrial wastewater dephosphorization sedimentation tank, characterized in that: The dynamic cleaning device for industrial wastewater dephosphorization sedimentation tank according to any one of claims 1 to 6 comprises the following steps: S1. Adding chemical agents into the sedimentation tank body (1) to separate phosphorus in the wastewater to form a precipitate, and the formed precipitate is accumulated at the bottom of the sedimentation tank body (1); S2. When the sediment needs to be cleaned, the drive motor (43) is started, and the drive motor (43) drives the collection frame (5) to move toward the collection tank (2). When the collection frame (5) moves, the scraper (6) moves, and when the scraper (6) moves, the sediment at the bottom of the sedimentation tank body (1) is scraped; S2.

1. As the amount of sediment scraped by the scraper (6) gradually increases, part of the sediment passes over the scraper (6) and falls into the collection frame (5). The sediment and water that pass over the scraper (6) first pass through the first shielding area (61), and then the sediment and water enter the sludge temporary storage area (62); S2.

2. Most of the sediment is retained in the sludge temporary storage area (62) under the protection of the baffle plate (56), and the water flows along the first flow area (63) into the filtration flow area (64) S2.

3. A small amount of sediment passes through the first flow area (63) and the filtration flow area (64) along with the water flow direction and is blocked by the filtration structure (51); S3. When the collecting frame (5) moves to the edge of the collecting tank (2), the telescopic assembly (52) drives the fixing plate (7) to move upward; S3.

1. During the movement of the fixed plate (7), the moving port (58) scrapes off the sediment attached to the surface of the fixed plate (7) and drops it onto the surface of the push block (54); S3.

2. The push block (54) moves upward to push the sediment accumulated in the collection frame (5) out from the scraper (6), and the scraper (6) pushes the sediment into the collection tank (2); S3.

3. During the upward movement of the push block (54), the cleaning brush (57) moves along with the push block (54) to scrape off the sediment on the surface of the filter structure (51). The scraped sediment slides down along the blocking plate (56) to the sludge temporary storage area (62), slides along the first inclined surface (541), and is discharged from the upper side of the scraper (6); S4. After all the sediment is scraped into the collection tank (2), the sludge suction pump (3) is started, and the collection pipe (31) sucks all the sediment and discharges it from one side of the sludge suction pump (3).

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