Sludge thickening tank for wastewater treatment

Abstract

The utility model discloses a sludge thickening tank for wastewater treatment, which comprises a thickening tank, a motor, a collector and a collecting box, the motor is mounted at the center of the top of the thickening tank through a support plate, a rotating rod at the output end of the motor vertically extends downwards into the thickening tank, and the collector which is transversely arranged is mounted on the outer wall of the rotating rod. A collecting box is installed at the end, away from the rotating rod, of the collector, a flow guide groove communicated with the collecting box is formed in the transverse side face of the collector, the interior of the flow guide groove is in a circular arc shape, and the diameter of the flow guide groove is gradually increased from one end of the rotating rod to one end of the collecting box. When the sludge water recycling device is used, garbage contained in sludge water floats upwards and is gathered on the surface of the sludge water through precipitation of the sludge water, the motor drives the collector to rotate through the rotating rod, the collector recycles the garbage in the flow guide groove, and the garbage slides into the recycling box along the inner wall of the flow guide groove; and through the design of the diameter of the flow guide groove, the garbage can slide towards the collecting box along the inner track of the flow guide groove.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a sludge thickening tank for wastewater treatment. Background Technology

[0002] In wastewater treatment systems, sludge thickening tanks are facilities specifically designed to reduce the water content of sludge and achieve initial sludge volume reduction. After a series of treatment processes, wastewater produces a large amount of sludge containing various impurities and microorganisms. If this sludge is not properly treated, it will not only occupy a lot of space but may also cause secondary pollution to the environment. The existence of sludge thickening tanks can separate the water from the sludge through physical or mechanical means, thereby significantly reducing the volume of the sludge and laying a good foundation for subsequent sludge treatment processes.

[0003] The operation of the sludge thickening tank is mainly based on the principle of gravity sedimentation. In the sludge thickening tank, wastewater containing sludge is introduced into the tank. Since the density of sludge particles is greater than that of water, the sludge particles will gradually sink to the bottom of the tank under the action of gravity, while the clarified water will overflow from the top of the tank. Over time, the sludge at the bottom of the tank will continue to accumulate and compact, and the water content will gradually decrease. The sludge at the bottom of the tank will be discharged from the sewage pipe at the bottom of the sludge thickening tank.

[0004] However, the sludge contains a small amount of non-biodegradable waste such as plastic bags. When the waste is discharged into the sludge thickening tank along with the sludge, the plastic bags will float to the surface of the sewage, resulting in the collection of waste in the clarified water. Furthermore, because the sludge thickening tank occupies a large area, it is difficult for staff to collect and clean the waste inside the sludge thickening tank.

[0005] Therefore, there is an urgent need for a sludge thickening tank for wastewater treatment to solve the problem that the floating garbage inside the sludge thickening tank is difficult for staff to collect and clean. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a sludge thickening tank for wastewater treatment, thereby solving the problem that floating garbage inside the sludge thickening tank is difficult for workers to collect and clean.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A sludge thickening tank for wastewater treatment is characterized by comprising a thickening tank, a motor, a collector, and a collection box. The motor is mounted on the top center of the thickening tank via a support plate. The rotating rod at the output end of the motor extends vertically downward into the interior of the thickening tank, and a horizontally arranged collector is mounted on the outer wall of the rotating rod. A collection box is mounted on the end of the collector away from the rotating rod. A guide channel communicating with the collection box is opened on the horizontal side of the collector. The interior of the guide channel is arc-shaped, and the diameter of the guide channel gradually increases from the rotating rod end to the collection box end.

[0009] To optimize the above technical solution, the specific measures also include:

[0010] Furthermore, the collector is provided with a water inlet at the end of the rotating rod, and the water inlet is connected to the guide channel through an internal water inlet pipe.

[0011] Furthermore, the collection box is detachably equipped with a recycling box inside, and the side wall of the collection box is provided with a guide ring that communicates with the guide groove. The side wall of the recycling box is correspondingly provided with a feed inlet that communicates with the guide ring.

[0012] Furthermore, the guide ring is designed in a constricted shape from the guide groove toward the recycling box.

[0013] Furthermore, both the collection box and the recycling box have filter holes on their outer walls.

[0014] Furthermore, the recycling bin is slidably inserted into the collection bin from the opening at the top of the collection bin. The top of the recycling bin is provided with a cover plate, and the bottom of the cover plate is provided with a vertical connecting rod. A vertical sliding groove is opened inside the side wall of the recycling bin with the feed inlet. A baffle is slidably arranged in the sliding groove. The baffle can slide to block the feed inlet. The lower end of the baffle is connected to the connecting rod through a connecting column, and a slot is opened on the sliding groove to allow the connecting column to move the baffle up and down.

[0015] Furthermore, a vertical slide rail is provided on the inner wall of the recycling bin on the side away from the feed inlet, and a limiting rod that is slidably disposed in the slide rail is also connected to the lower end of the connecting rod.

[0016] Furthermore, a filter plate is provided on the inner side of the top of the thickening tank, and the filter plate is connected to the inner wall of the thickening tank to form a clear water trough. The filter plate is provided with a leakage hole that communicates with the inner side of the thickening tank, and a drain pipe that connects to the outside of the thickening tank is provided on the side of the clear water trough away from the filter plate.

[0017] Furthermore, the lower end of the rotating rod extends downward to the bottom of the collector and is connected to a sludge shield with an opening facing downward. A sludge inlet pipe is installed at the bottom of the thickening tank, with the end of the sludge inlet pipe located inside the sludge shield. A sludge discharge pipe for discharging sludge is also provided at the bottom of the thickening tank.

[0018] Furthermore, a support frame is fixed to the outside of the rotating rod located between the hood and the collector. The end of the support frame away from the rotating rod extends to the side of the hood and is connected to a horizontally arranged scraper.

[0019] The beneficial effects of this utility model are:

[0020] This invention solves the problem of floating garbage in sludge thickening tanks being difficult for workers to collect and clean by setting up a collector and a collection box. In use, the garbage contained in the sludge water floats to the surface after sedimentation. The motor drives the collector to rotate through a rotating rod. During the rotation of the collector, the collector collects the garbage in the guide channel. Then the garbage slides along the inner wall of the guide channel into the collection box to complete the garbage recycling process. The design of the guide channel diameter makes it easy for the garbage to slide along the inner trajectory of the guide channel into the collection box, increasing the garbage traction efficiency.

[0021] This invention, through the setting of a water inlet and a water inlet pipe, allows water to be poured into the collector during its rotation. The water discharged from the water inlet pipe pushes the garbage towards the collection box, thereby reducing the accumulation of garbage inside the collector.

[0022] This utility model, through the design of a baffle and other structures, allows workers to manually pull up the cover when collecting and processing the waste inside the recycling bin. During the upward movement of the cover, the cover moves the baffle upward via a connecting rod and a connecting column. When the baffle reaches the top, it blocks the feed inlet, preventing waste from leaking out when workers remove the recycling bin from inside the collection bin. This facilitates the recycling and processing of waste inside the concentration tank.

[0023] This invention utilizes a sludge shield to prevent sludge water from entering the thickening tank through the inlet pipe. The sludge shield at the top of the inlet pipe blocks the spray of sludge water, thus preventing the sprayed sludge water from agitating the sludge water in the middle of the thickening tank and reducing the impact of the entering sludge water on the stagnant sludge water. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a sludge thickening tank for wastewater treatment proposed in this utility model.

[0025] Figure 2This is a schematic diagram of the clear water tank of a sludge thickening tank for wastewater treatment proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the sludge thickening tank for wastewater treatment and the scraper proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of a sludge collector for a wastewater treatment sludge thickening tank proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of a collection box for a sludge thickening tank for wastewater treatment proposed in this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of a sludge thickening tank for wastewater treatment proposed in this utility model;

[0030] Figure 7 This is a structural cross-sectional view of the recovery box of a sludge thickening tank for wastewater treatment proposed in this utility model;

[0031] Figure 8 This is a schematic diagram of the rotating pipe of a sludge thickening tank for wastewater treatment proposed in this utility model.

[0032] Reference numerals: 1. Thickening tank; 2. Filter plate; 201. Clear water tank; 202. Filter hole; 203. Drain pipe; 3. Motor; 301. Support plate; 302. Rotating rod; 4. Collector; 401. Guide channel; 402. Inlet pipe; 5. Collection box; 501. Feed inlet; 502. Filter hole; 503. Guide ring; 6. Support frame; 601. Scraper; 602. Sewage pipe; 7. Sludge cover; 701. Sludge inlet pipe; 8. Recycling box; 801. Cover plate; 802. Connecting rod; 803. Limiting rod; 804. Connecting column; 805. Baffle; 9. Rotating tube; 901. Rotating cylinder; 902. Lever. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] As attached Figure 1As shown in the figure, a sludge thickening tank for wastewater treatment according to an embodiment of the present invention includes a thickening tank 1, a motor 3, a collector 4, and a collection box 5. The motor 3 is installed at the top center of the thickening tank 1 via a support plate 301. The rotating rod 302 at the output end of the motor 3 extends vertically downward into the interior of the thickening tank 1, and the collector 4 is installed on the outer wall of the rotating rod 302 in a horizontal manner. The collection box 5 is installed at the end of the collector 4 away from the rotating rod 302. A guide channel 401 communicating with the collection box 5 is opened on the horizontal side of the collector 4. The interior of the guide channel 401 is set in an arc shape, and the diameter of the guide channel 401 gradually increases from the rotating rod 302 end to the collection box 5 end.

[0035] This invention solves the problem of floating garbage inside the sludge thickening tank being difficult for workers to collect and clean by setting up a collector 4 and a collection box 5. In use, the garbage contained in the sludge water floats upward after sedimentation and gathers on the surface of the sludge water. The motor 3 drives the collector 4 to rotate through the rotating rod 301. During the rotation of the collector 4, the collector 4 collects the garbage in the guide channel 401. Then the garbage slides along the inner wall of the guide channel 401 into the collection box 8 to complete the garbage recycling process. The diameter design of the guide channel 401 makes it easy for the garbage to slide along the inner trajectory of the guide channel 401 towards the collection box 5, increasing the garbage traction efficiency.

[0036] In this scheme, the collectors 4 mentioned above can be set up in two symmetrical groups to improve efficiency.

[0037] As attached Figure 4 As shown, in a specific embodiment based on the above, the collector 4 is provided with a water inlet at the end mounted on the rotating rod 302, and the water inlet is connected to the guide channel 401 through an internal water inlet pipe 402. Thus, during the rotation of the collector 4, the water inlet pipe 402 can fill the collector 4 with water, and the water discharged from the water inlet pipe 402 pushes the garbage towards the collection box 5, thereby reducing the accumulation of garbage inside the collector 4.

[0038] As attached Figure 5 and attached Figure 6 As shown, in another specific embodiment based on the above, the collection box 5 is detachably provided with a recycling box 8 inside, the side wall of the collection box 5 is provided with a guide ring 503 that communicates with the guide groove 401, and the side wall of the recycling box 8 is provided with a feed inlet 501 that communicates with the guide ring 503.

[0039] The guide ring 503 is designed with a constricted opening from the guide channel 401 toward the collection bin 8. In this way, the waste that slides to the end of the guide channel 401 can be guided into the inside of the collection bin 5 by the guide ring 503, and the constricted opening of the guide ring 503 can reduce the amount of waste flowing out of the inlet 501 inside the collection bin 8.

[0040] Both the collection box 5 and the recycling box 8 have filter holes 502 on their outer walls. This allows the sludge water to flow through the filter holes 502 as the collection box 5 rotates, thus reducing fluctuations in the sludge water caused by their rotation.

[0041] As attached Figure 7 As shown, in a further embodiment based on the above, the recycling bin 8 is slidably inserted into the collection bin 5 from the opening at the upper end of the collection bin 5. The top of the recycling bin 8 is provided with a cover plate 801, and the bottom of the cover plate 801 is provided with a vertical connecting rod 802. A vertical groove is opened inside the side wall of the recycling bin 8 where the feed inlet 501 is located. A baffle 805 is slidably arranged in the groove. The baffle 805 can slide to block the feed inlet 501. The lower end of the baffle 805 and the connecting rod 802 are connected by a connecting post 804. The groove is provided with a slot that allows the connecting post 804 to move up and down with the baffle 805.

[0042] Therefore, when staff collect and process the waste inside the recycling bin 8, they manually pull up the cover plate 801. During the upward movement of the cover plate 801, the cover plate 801 drives the baffle 805 to move upward through the connecting rod 802 and the connecting column 804. When the baffle 805 is at the top, it can block the feed inlet 501, so that when staff take the recycling bin 8 out of the collection bin 5, the waste will not leak out from the feed inlet 501, thus facilitating the recycling and processing of the waste inside the concentration tank 1.

[0043] The recycling bin 8 has a vertical slide rail on its inner wall on the side away from the feed inlet 501. The lower end of the connecting rod 802 is also connected to a limiting rod 803 that is slidably installed in the slide rail. In this way, as the baffle 805 rises, the cover plate 801 limits the range of movement of the recycling bin 8 by the limiting rod 803, and can prevent shaking during the removal of the recycling bin 8.

[0044] As attached Figure 2 As shown, in another specific embodiment based on the above, a filter plate 2 is provided on the inner side of the top of the thickening tank 1. The filter plate 2 is connected to the inner wall of the thickening tank 1 to form a clear water trough 201. The filter plate 2 is provided with a drain hole 202 communicating with the inner side of the thickening tank 1. A drain pipe 203 communicating with the outside of the thickening tank 1 is provided on the side of the clear water trough 201 away from the filter plate 2. In this way, after the sludge water has settled for a period of time, clear water separates and collects on the top of the sludge water. It can flow into the clear water trough 201 through the drain hole 202, and then be discharged from the inside of the clear water trough 201 through the drain pipe 203.

[0045] As attached Figure 3As shown, in another specific embodiment based on the above, the lower end of the rotating rod 302 extends downward to below the collector 4 and is connected to a downward-facing sludge shield 7. An inlet pipe 701 is installed at the bottom of the thickening tank 1, with its end located inside the sludge shield 7. A drain pipe 602 for discharging sludge is also provided at the bottom of the thickening tank 1. Thus, during use, sludge water enters the thickening tank 1 through the inlet pipe 701. The sludge shield 7 at the top of the inlet pipe 701 blocks the spray of sludge water, preventing the sprayed sludge water from agitating the sludge water located in the middle of the thickening tank 1, thereby reducing the impact of the entering sludge water on the stagnant sludge water.

[0046] In a further embodiment based on the above, a support frame 6 is fixed to the outside of the rotating rod 302 located between the sludge shield 7 and the collector 4. One end of the support frame 6, away from the rotating rod 302, extends to the side of the sludge shield 7 and is connected to a horizontally arranged scraper 601. Thus, during use, the rotating rod 301 can be rotated, and the support frame 6 drives the two sets of scrapers 601 to scrape away the sludge located at the top of the drain pipe 602, reducing sludge blockage at the drain pipe 602 port. In this solution, multiple sets of support frames 6 and scrapers 601 can be provided as needed.

[0047] As attached Figure 8 As shown, in a further embodiment based on the above, a rotating tube 9 is sleeved on the outer wall of the support frame 6, and three sets of rotating cylinders 901 are installed on the outer wall of the rotating tube 9. When the sludge water flows downward from the sludge cover 7, the sludge water impacts the rotating cylinders 901. The rotating cylinders 901 are driven to rotate by the impact of the sludge water, and three sets of levers 902 are fixed on the outer wall of the rotating tube 9. During the rotation of the levers 902, the levers 902 can disperse the garbage mixed in the sludge water to the surroundings, so that the garbage can float upward.

[0048] One specific embodiment of this utility model is as follows:

[0049] Sludge water enters the thickening tank 1 through the inlet pipe 701. The sludge shield 7 at the top of the inlet pipe 701 blocks the spray of sludge water. The motor 3 drives the rotating rod 302 to rotate. The rotating rod 301 drives two sets of scrapers 601 through the support frame 6 to scrape off the sludge located at the top of the discharge pipe 602, reducing sludge blockage at the discharge pipe 602 port. After a period of sedimentation, clear water separates and collects on top of the sludge water, then flows into the clear water tank 201 through the drain hole 202. The clear water in the clear water tank 201 is discharged through the drain pipe 203. While the motor 3 drives the rotating rod 302 to rotate, the rotating rod 302 also drives two sets of collectors 4 to rotate. During the rotation of the collectors 4, the collectors 4 collect the garbage floating on the surface of the sludge water. The garbage collected by the collectors 4 is stored in the guide channel 401. The interior of the guide channel 401 is arc-shaped, and the guide channel 4 is located at one end of the rotating rod 302. The diameter of the guide channel 401 is smaller than that of the guide channel 401 located at one end of the collection box 5, so that the garbage inside the guide channel 401 can slide towards the end of the collection box 5 as the collector 4 rotates. The garbage enters the recycling box 8 through the feed inlet 501 on one side of the collection box 5 and the recycling box 8. During the rotation of the collector 4, the water inlet pipe 402 pours clean water into the collector 4. The clean water discharged from the water inlet pipe 402 will push the garbage towards the collection box 5, thereby reducing the accumulation of garbage inside the collector 4. When the personnel collect the garbage inside the recycling box 8, they lift the cover plate 801 upward. During the process of the cover plate 801 rising, the cover plate 801 drives the baffle 805 to move upward through the connecting rod 802 and the connecting column 804. When the baffle 805 is at the top, the baffle 805 can block the feed inlet 501, so that when the personnel take the recycling box 8 out of the collection box 5, the garbage will not leak out from the feed inlet 501.

[0050] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in this utility model are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0051] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A sludge concentration tank for wastewater treatment, characterized by: The device includes a thickening tank (1), a motor (3), a collector (4), and a collection box (5). The motor (3) is installed at the top center of the thickening tank (1) via a support plate (301). The rotating rod (302) at the output end of the motor (3) extends vertically downward into the thickening tank (1), and a collector (4) is installed on the outer wall of the rotating rod (302). A collection box (5) is installed at the end of the collector (4) away from the rotating rod (302). A guide groove (401) communicating with the collection box (5) is opened on the horizontal side of the collector (4). The interior of the guide groove (401) is set in an arc shape, and the diameter of the guide groove (401) gradually increases from the rotating rod (302) end to the collection box (5) end.

2. The sludge concentration tank for wastewater treatment according to claim 1, characterized by: The collector (4) is installed on the end of the rotating rod (302) with a water inlet, and the water inlet is connected to the guide channel (401) through the internal water inlet pipe (402).

3. The sludge concentration tank for wastewater treatment according to claim 1, characterized by: The collection box (5) is detachably equipped with a recycling box (8). The side wall of the collection box (5) is provided with a guide ring (503) that communicates with the guide groove (401). The side wall of the recycling box (8) is provided with a feed inlet (501) that communicates with the guide ring (503).

4. The sludge concentration tank for wastewater treatment according to claim 3, characterized by: The guide ring (503) is arranged in a constricted shape from the guide groove (401) toward the recycling box (8).

5. The sludge concentration tank for wastewater treatment according to claim 3, characterized by: The outer walls of both the collection box (5) and the recycling box (8) are provided with filter holes (502).

6. A sludge thickening tank for wastewater treatment according to claim 3, characterized in that: The recycling bin (8) is slidably inserted into the collection bin (5) from the opening at the upper end of the collection bin (5). The top of the recycling bin (8) is provided with a cover plate (801). The bottom of the cover plate (801) is provided with a vertical connecting rod (802). A vertical groove is opened inside the side wall of the recycling bin (8) where the feed inlet (501) is located. A baffle (805) is slidably arranged in the groove. The baffle (805) can slide to block the feed inlet (501). The lower end of the baffle (805) and the connecting rod (802) are connected by a connecting column (804). The groove is provided with a slot that allows the connecting column (804) to move the baffle (805) up and down.

7. The sludge concentration tank for wastewater treatment according to claim 6, characterized by: The inner wall of the recycling bin (8) away from the feed inlet (501) is provided with a vertical slide rail, and the lower end of the connecting rod (802) is also connected to a limiting rod (803) that is slidably disposed in the slide rail.

8. The sludge concentration tank for wastewater treatment according to claim 1, characterized by: A filter plate (2) is provided on the inner side of the top of the thickening tank (1). The filter plate (2) is connected to the inner wall of the thickening tank (1) to form a clear water tank (201). The filter plate (2) is provided with a leak hole (202) that communicates with the inner side of the thickening tank (1). A drain pipe (203) that communicates with the outside of the thickening tank (1) is provided on the side of the clear water tank (201) away from the filter plate (2).

9. A sludge thickening tank for wastewater treatment according to claim 1, characterized in that: The lower end of the rotating rod (302) extends downward to the bottom of the collector (4) and is connected to a downward-facing sludge shield (7). A sludge inlet pipe (701) is installed at the bottom of the thickening tank (1), and the end of the sludge inlet pipe (701) is located inside the sludge shield (7). A sludge discharge pipe (602) for discharging sludge is also provided at the bottom of the thickening tank (1).

10. The sludge concentration tank for wastewater treatment according to claim 9, characterized by: A support frame (6) is fixed to the outside of the rotating rod (302) located between the dirt cover (7) and the collector (4). The end of the support frame (6) away from the rotating rod (302) extends to the side of the dirt cover (7) and is connected to a horizontally arranged scraper (601).

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