Self-cleaning device for water outlet channel of radial-flow sedimentation tank

Abstract

The utility model belongs to a radial-flow sedimentation tank water outlet channel self-cleaning device which comprises a peripheral transmission mud scraper and a water outlet channel, a brush support is fixed on a peripheral transmission mud scraper rack body, the bottom of the brush support is detachably connected with an unequal-length U-shaped plate, a brush is fixed on the outer wall of the unequal-length U-shaped plate, and the outer wall of the unequal-length U-shaped plate is detachably connected with the brush support. The lower portion of the unequal-length U-shaped plate is arranged in the water outlet channel, and the brush makes contact with the inner wall of the water outlet channel. The self-cleaning device has the beneficial effect that the self-cleaning function of the water outlet channel of the radial-flow sedimentation tank is realized on the premise of not additionally arranging power equipment. The labor cost for cleaning the sedimentation tank is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of gravity-driven stratified sedimentation tanks and relates to improvements of radial flow sedimentation tanks. Background Technology

[0002] Radial flow sedimentation tanks are typically circular, with diameters ranging from 6 to 60 meters, and a maximum diameter of 100 meters. The water depth at the circumference is 1.5 to 3.0 meters. Wastewater enters the tank through a central inlet pipe and flows slowly towards the circumference. Suspended solids settle during this flow and enter the sludge hopper along the slope of the tank bottom. Clarified water overflows from the circumference of the tank into the effluent channel.

[0003] Radial flow sedimentation tanks are characterized by good sedimentation effect, simple equipment, large water treatment capacity, minimal water agitation, and good removal of suspended solids, and are commonly used in primary and secondary sedimentation tanks of large and medium-sized wastewater treatment plants. However, because wastewater contains a large amount of pollutants and nutrients, moss and algae often grow in the effluent channels, causing impurities to accumulate, affecting aesthetics and the quality of effluent from the wastewater treatment plant. Furthermore, a large amount of impurities may also cause blockages in subsequent treatment process pipelines, seriously affecting the safe and stable operation of the wastewater treatment plant.

[0004] The current conventional method of handling this issue is manual cleaning on a regular basis, which is labor-intensive, inefficient, and poses safety hazards during the cleaning process. Utility Model Content

[0005] The purpose of this invention is to propose a self-cleaning device for the effluent channel of a radial flow sedimentation tank, which can clean the deposits on the inner wall of the effluent channel.

[0006] The technical solution of this utility model is as follows: a self-cleaning device for the effluent channel of a radial flow sedimentation tank, comprising a peripheral drive sludge scraper and an effluent channel. A brush bracket is fixed on the frame of the peripheral drive sludge scraper. An unequal-length U-shaped plate is detachably connected to the bottom of the brush bracket. A brush is fixed to the outer wall of the unequal-length U-shaped plate. The lower part of the unequal-length U-shaped plate is inside the effluent channel, and the brush is in contact with the inner wall of the effluent channel.

[0007] The brush bristles are made of hard PP polypropylene.

[0008] At least two U-shaped plates of unequal length are provided and fixed with connecting rods.

[0009] The unequal-length U-shaped plates and the brush are connected by a concave-convex strip, and the brush can be pulled out and replaced.

[0010] The brush bracket is bolted to the frame of the surrounding drive scraper.

[0011] The brush holder is connected to the long side of the U-shaped plate of unequal length by bolts.

[0012] The beneficial effects of this invention are: It achieves self-cleaning of the effluent channel of a radial flow sedimentation tank without adding new power equipment. The unequal-length U-shaped plates can effectively clean algae from the two inner walls and bottom of the effluent channel, and the plate structure occupies a small volume. The scraped algae falls into the water, preventing excessive adhesion and increased resistance. This reduces the labor cost of sedimentation tank cleaning and improves work efficiency. It also eliminates safety hazards during sedimentation tank cleaning, ensuring the stable operation of the wastewater treatment system to a certain extent. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a radial flow sedimentation tank;

[0014] Figure 2 This is a simplified structural diagram of a self-cleaning device;

[0015] Figure 3 This is a schematic diagram of two U-shaped plates of unequal length connected together;

[0016] Figure 4 This is a schematic diagram of the connection between unequal-length U-shaped plates and brush-shaped concave and convex strips;

[0017] In the diagram: 1 is a radial flow sedimentation tank; 2 is the central cylinder of the sedimentation tank; 3 is the inlet; 4 is a peripheral drive sludge scraper; 5 is the outlet channel; 6 is the scum trough; 7 is the sludge scraper rollers and motor; 8 is the scum discharge pipe; 9 is the scum collection tank; 10 is the inlet pipe; 11 is the cleaning brush for the sedimentation tank outlet channel; 12 is the brush support; 13 is an unequal length U-shaped plate; and 14 is a connecting rod. Detailed Implementation

[0018] Figure 1 , 2 As shown in Figures 3 and 4, the self-cleaning device for the effluent channel of the radial flow sedimentation tank of this utility model is installed on the peripheral drive scraper 4 of the sedimentation tank. The radial flow sedimentation tank 1, the sedimentation tank central cylinder 2, the inlet 3, the scum trough 6, the scraper rollers and motor 7, the scum discharge pipe 8, the scum collection tank 9, and the inlet pipe 10 are all existing structures. The peripheral drive scraper 4 is driven to rotate at a low speed by friction transmission through the scraper rollers and motor 7.

[0019] The self-cleaning device for the effluent channel of the radial flow sedimentation tank includes: a brush holder 12, a brush 11, an unequal-length U-shaped plate 13, and a connecting rod 14. One end of the brush holder 12 is bolted to the peripheral drive scraper 4. The bottom of the brush holder 12 is detachably connected to the unequal-length U-shaped plate 13, and the brush 11 is fixed to the outer wall of the unequal-length U-shaped plate 13. The lower part of the unequal-length U-shaped plate 13 is inside the effluent channel 5, and the brush 11 is in contact with the inner wall of the effluent channel 5. The rotation of the peripheral drive scraper 4 drives the brush holder 12, the unequal-length U-shaped plate 13, and the brush 11 to rotate. The brush 11 rubs against the bottom and wall of the effluent channel 5, thereby achieving automatic cleaning of the effluent channel 5.

[0020] When the brush 11 is worn, loosen the bolts fixing the unequal-length U-shaped plate 13 to replace the unequal-length U-shaped plate 13 and the brush 11. There is also a connection method for replacing the brush 11: the brush 11 has a structure with a raised strip on the back, and the unequal-length U-shaped plate 13 and the brush 11 are connected in the form of a raised and recessed strip. The brush 11 can be pulled out, and the new brush can be inserted into the groove to replace it.

[0021] Preferably, the bristles of the brush 11 are made of hard PP polypropylene, which is corrosion resistant. At least two U-shaped plates 13 of unequal length are provided and fixed by connecting rods 14, allowing for brushing twice to further remove attached moss that was not removed by a single brush 11.

Claims

1. A self-cleaning device for the outlet channel of a radial-flow sedimentation basin, comprising a peripherally driven mud scraper (4), an outlet channel (5), characterized in that The periphery drive mud scraper (4) frame body is fixed with brush support (12), the bottom of brush support (12) is detachably connected with unequal length U-shaped plate (13), the outer wall of unequal length U-shaped plate (13) is fixed with brush (11), the lower part of unequal length U-shaped plate (13) is in the inside of water outlet channel (5), and brush (11) is in contact with the inner wall of water outlet channel (5).

2. The device according to claim 1, characterized in that it comprises: The bristles of the brush (11) are hard PP polypropylene bristles.

3. The device according to claim 1, characterized in that it comprises a plurality of said elements (2) arranged in series along the outlet channel (1) of the radial-flow sedimentation basin. The unequal length U-shaped plate (13) is provided with at least two, which are fixed by connecting rod (14).

4. The device according to claim 1, characterized in that: The unequal length U-shaped plate (13) and the brush (11) are connected in the form of concave-convex strips, and the brush (11) can be pulled out and replaced.

5. The device according to claim 1, characterized in that it further comprises a water inlet pipe (7) and a water outlet pipe (8) connected to the water inlet pipe (7) and to the water outlet pipe (6) respectively. The brush support (12) and the periphery drive mud scraper (4) frame body are connected by bolts.

6. The device according to claim 1, characterized in that: The long side of the brush support (12) and the unequal length U-shaped plate (13) are connected by bolts.

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