Bottom mud collecting device for sewage sedimentation tank

Abstract

The utility model relates to a bottom mud collecting device for a sewage sedimentation tank, which is characterized in that a bottom frame is arranged below a supporting platform by adopting a plurality of telescopic connecting frames, a plurality of L-shaped mud scraping plates are arranged at the bottom of the bottom frame along the length direction, and the bottom edge of each mud scraping plate is in contact with the bottom of the sedimentation tank; every two adjacent mud scraping plates are arranged in a mirror symmetry mode, and the adjacent ends of the mud scraping plates are fixedly connected to form a closed rhombic frame. At least one sludge suction pipe is further mounted on the bottom frame; the mud suction pipe is connected with the bottom mud pumping assembly through a lifting rubber pipe, and the bottom mud pumping assembly is connected with the mud conveying pipe through a connecting pipe. The bottom mud collecting device can adapt to the change of the bottom of the sedimentation tank, has the bottom mud collecting capacity in the forward stroke and the return stroke, is high in operation efficiency and does not have the jamming problem.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment facilities, and in particular relates to a sewage sedimentation tank bottom mud collection device. Background Art

[0002] A sewage sedimentation tank refers to a treatment tank for sewage sedimentation. Generally, drugs are added to the sewage according to the pollutant composition in the sewage. The added drugs include but are not limited to flocculants and coagulants. Under the effect of static, the particles and floccules in the sewage settle to the bottom of the tank to form bottom mud. The upper layer of clear water is then transferred to the next treatment tank for other treatment. The bottom mud is salvaged and collected and treated accordingly, such as using a filter press to press it into mud cake for landfill.

[0003] Existing sediment salvage and collection devices typically push sediment from one end of the sedimentation tank to the other, then use a slurry pump to extract the slurry out of the tank. This type of sediment collection device has the following drawbacks: First, due to its relatively fixed structure, it is prone to blocking when sediment clumps form on the tank bottom, and the scraper at the bottom cannot adapt well to changes in the tank bottom; second, the sediment collection device can only effectively collect sediment on the outbound journey; after completing a collection operation, it needs to be reset to its original position, which affects the efficiency of sediment collection and processing.

[0004] In summary, it is necessary to develop and design a new type of sewage sedimentation tank sludge collection device that can adapt to the changes in the sedimentation tank bottom and has the ability to collect sludge in both the outbound and return journeys. Utility Model Content

[0005] The purpose of the utility model is to provide a sewage sedimentation tank bottom mud collection device, which can adapt to the changes of the sedimentation tank bottom, has the ability to collect bottom mud in both the outward and return strokes, has high operating efficiency and will not cause blocking problems.

[0006] The technical solution adopted by the utility model is: a sewage sedimentation tank bottom mud collection device, comprising a supporting platform that can move self-propelled along tracks laid on both sides of the sedimentation tank, a mud delivery pipe and at least one group of bottom mud pumping components are installed on the supporting platform, and a mud discharge pipe is installed at the end of the mud delivery pipe; a bottom frame is installed below the supporting platform using multiple telescopic connecting frames, a plurality of L-shaped mud scrapers are installed at the bottom of the bottom frame along the length direction, and the bottom edge of each mud scraper is in contact with the bottom of the sedimentation tank, two adjacent mud scrapers are arranged in mirror symmetry, and the adjacent ends of the mud scrapers are fixedly connected to form a closed diamond frame; at least one mud suction pipe is also installed on the bottom frame, the mud suction pipe includes a main pipe and branch pipes located below the two ends of the main pipe, the branch pipes are installed and fixed between the tips of adjacent diamond frames, and there is a certain distance between the lower end of the branch pipe and the bottom of the tank; the mud suction pipe is connected to the bottom mud pumping component through a lifting hose, and the bottom mud pumping component is connected to the mud delivery pipe through a connecting pipe.

[0007] Preferably, three groups of bottom mud pumping assemblies are provided, and three mud suction pipes are provided; the first group of bottom mud pumping assemblies includes a first mud pump and a first mud box, the inlet of the first mud pump is connected to the outlet of the first mud box, the outlet of the first mud pump is connected to the mud delivery pipe through a first connecting pipe, and the inlet of the first mud box is connected to the first mud suction pipe through a first lifting hose; the second group of bottom mud pumping assemblies includes a second mud pump and a second mud box, the inlet of the second mud pump is connected to the outlet of the second mud box, the outlet of the second mud pump is connected to the mud delivery pipe through a second connecting pipe, and the inlet of the second mud box is connected to the second mud suction pipe through a second lifting hose; the third group of bottom mud pumping assemblies includes a third mud pump and a third mud box, the inlet of the third mud pump is connected to the outlet of the third mud box, the outlet of the third mud pump is connected to the mud delivery pipe through a third connecting pipe, and the inlet of the third mud box is connected to the third mud suction pipe through a third lifting hose.

[0008] Preferably, multiple groups of upper connecting seats are provided at the bottom of the supporting platform, and multiple groups of lower connecting seats are provided at the corresponding positions on the top of the bottom frame. The upper end of each telescopic connecting frame is fixedly connected to each group of upper connecting seats, and the lower end of each telescopic connecting frame is fixedly connected to each group of lower connecting seats.

[0009] Preferably, the telescopic connecting frame includes two opposite sleeves, a plurality of upper connecting beams are installed between the two sleeves, telescopic rods are inserted into the lower parts of the sleeves, and lower connecting beams are installed between the lower ends of the telescopic rods.

[0010] Preferably, the upper connecting seat includes an upper support fixedly connected to the support platform and a flange plate arranged at the lower end of the upper support, the lower connecting seat includes a lower support fixedly connected to the bottom frame and a flange plate arranged at the upper end of the lower support, an upper connecting plate is provided at the upper end of the sleeve of the telescopic connecting frame, and a lower connecting plate is provided at the lower end of the telescopic rod of the telescopic connecting frame, the upper connecting plate is fixedly connected to the flange plate of the upper connecting seat by bolts, and the lower connecting plate is fixedly connected to the flange plate of the lower connecting seat by bolts.

[0011] Preferably, the supporting platform includes a platform frame and a platform panel paved on the platform frame, end wheel brackets are installed at both ends of the platform frame, and running wheels and running motors driving the running wheels are installed on the end wheel brackets.

[0012] Preferably, safety guardrails are installed on both sides of the support platform.

[0013] The advantages and positive effects of the utility model are:

[0014] The utility model provides a bottom mud collection device for a sewage sedimentation tank. Compared with the existing bottom mud salvage and collection device, the bottom mud collection device in the utility model adopts multiple telescopic connecting frames to connect a support platform moving along a track with a bottom frame moving along the tank bottom, and adopts a lifting hose to connect the bottom mud pumping assembly on the support platform with the mud suction pipe on the bottom frame. Therefore, when the bottom frame and its scraper move along the tank bottom, they can automatically rise and fall and shift when encountering problems such as bottom mud caking, that is, they can adapt to changes in the bottom of the sedimentation tank and effectively avoid blocking problems.

[0015] By using scrapers at the bottom of the bottom frame to construct a closed diamond-shaped frame and placing the suction port of the sludge suction pipe between the tips of adjacent diamond-shaped frames, the bottom frame moves horizontally, and the bottom mud on the moving path enters the bell-shaped mouth of the adjacent diamond-shaped frame and converges at the suction port of the sludge suction pipe, thus achieving high sludge collection and suction efficiency. In addition, this device has the ability to collect bottom mud on both the outbound and return journeys. After moving to one end of the sedimentation tank, it also sucks mud on the return journey, eliminating the need to return to the initial position before the next suction operation, thus improving operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the main part of the utility model, from an upper perspective;

[0018] Figure 3 yes Figure 1 Schematic diagram of the main structure of the medium telescopic connecting frame.

[0019] In the picture:

[0020] 1. Mud discharge pipe; 2. First connecting pipe; 3. First mud pump; 4. First mud box; 5. Mud delivery pipe; 6. Second connecting pipe; 7. Second mud pump; 8. Second mud box; 9. Third connecting pipe; 10. Third mud pump; 11. Third mud box; 12. Safety guardrail; 13. End wheel bracket; 14. Travel wheel; 15. Travel motor; 16. Support platform; 17. Upper connecting seat; 18. Telescopic Connecting frame; 18-1, upper connecting plate; 18-2, sleeve; 18-3, upper connecting beam; 18-4, telescopic rod; 18-5, lower connecting beam; 18-6, lower connecting plate; 19, third lifting hose; 20, third mud suction pipe; 21, scraper; 22, bottom frame; 23, second lifting hose; 24, second mud suction pipe; 25, first lifting hose; 26, first mud suction pipe; 27, lower connecting seat. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to illustrate in detail.

[0022] See Figure 1 and Figure 2 The sewage sedimentation tank bottom mud collection device of the present invention includes a support platform 16 that can move along the tracks laid on both sides of the sedimentation tank. A mud delivery pipe 5 and at least one set of bottom mud pumping components are installed on the support platform 16, and a mud discharge pipe 1 is installed at the end of the mud delivery pipe 5.

[0023] The support platform 16 includes a platform frame and a platform panel mounted on the platform frame. Therefore, in addition to serving as a mounting platform for key components, the support platform 16 can also serve as a walking path for on-site personnel. On-site personnel walking on the support platform 16 can observe the conditions within the sewage sedimentation tank below. In this embodiment, end wheel brackets 13 are mounted at both ends of the platform frame of the support platform 16. Travel wheels 14 and travel motors 15 for driving the travel wheels 14 are mounted on the end wheel brackets 13. The travel motors 15 drive the travel wheels 14 to rotate forward or reverse, thereby achieving forward or reverse translational displacement along the tracks on both sides of the sedimentation tank.

[0024] In this embodiment, safety guardrails 12 are further installed on both sides of the support platform 16. The safety guardrails 12 are used to improve the safety of on-site personnel walking and moving along the support platform 16 to avoid falling accidents.

[0025] The mud delivery pipe 5 is a pipeline for receiving the mud by multiple groups of mud pumping components, and the mud discharge pipe 1 is used to discharge the mud collected in the mud delivery pipe 5. Generally, a mud receiving trough arranged along the length direction is provided on the side of the sedimentation tank. During the displacement of the support platform 16 along the length direction of the sedimentation tank, the port of the mud discharge pipe 1 is always located above the mud receiving trough, so that the discharged mud continues to enter the mud receiving trough, and the mud receiving trough transports the mud to subsequent treatment sites.

[0026] A bottom frame 22 is installed below the support platform 16 using multiple telescopic connecting frames 18. A plurality of L-shaped scraper blades 21 are installed at the bottom of the bottom frame 22 along the length direction, and the bottom edge of each scraper blade 21 contacts the bottom of the sedimentation tank. Two adjacent scraper blades 21 are arranged in mirror symmetry, and the adjacent ends of the scraper blades 21 are fixedly connected to form a closed diamond frame.

[0027] The bottom frame 22 is welded from square steel pipes, C-shaped steel, or I-shaped steel, forming a rectangular planar frame. The scraper blades 21 are welded from square steel pipes, C-shaped steel, or I-shaped steel, with the tops of the scraper blades 21 welded to the bottom of the bottom frame 22. As the bottom frame 22 translates along the pool bottom, the scraper blades 21 in contact with the pool bottom scrape the bottom mud, and the scraped mud is pushed forward by the transversely connected scraper blades 21. Because adjacent scraper blades 21 form a plurality of adjacent diamond-shaped frames, bell-shaped openings are formed between the front and rear portions of adjacent diamond-shaped frames. Thus, when moving forward (which can be called the outward stroke) or backward (which can be called the return stroke), the scraped mud enters the bell-shaped openings and, under the squeeze, moves toward the base of the bell-shaped openings, i.e., between the tips of adjacent diamond-shaped frames, achieving the technical effect of mud collection.

[0028] At least one suction pipe is mounted on the bottom frame 22. The number of suction pipes matches the number of bottom mud pumping assemblies, and each assembly is assigned one suction pipe to the other. Each suction pipe consists of a main pipe and branch pipes located below each end of the main pipe. The branch pipes are fixed between the tips of adjacent diamond-shaped frames, with a certain distance between their lower ends and the tank bottom. The suction pipe is connected to the bottom mud pumping assembly via a lifting hose, which in turn is connected to the mud delivery pipe 5 via a connecting pipe.

[0029] As previously mentioned, during the translational movement of the bottom frame 22 and its scraper blade 21 along the pool bottom, the scraped bottom mud enters the bell mouth between adjacent diamond frames and moves to the position between the tips of the diamond frames under the action of squeezing. The branch pipe of the mud suction pipe is set at this position, and the bottom mud pumping assembly produces an extraction effect. The bottom mud slurry enters the branch pipe upward, then enters the main pipe, and then enters the lifting hose upward. After passing through the bottom mud pumping assembly, it enters the mud delivery pipe 5. The lifting hose is a rubber hose lined with a ribbed mesh. It has sufficient strength and a certain degree of flexibility. The purpose of using the lifting hose to connect the bottom mud pumping assembly and the mud suction pipe is to allow the bottom frame 22 and its scraper blade 21 to be raised and lowered while ensuring a reliable mud passage between the bottom mud pumping assembly and the mud suction pipe.

[0030] The purpose of using the telescopic connecting frame 18 to connect the support platform 16 with the bottom frame 22 is to make the bottom frame 22 and its scraper 21 a floating installation structure. During operation, the bottom frame 22 and its scraper 21 fall to the bottom of the sedimentation tank by relying on their own gravity. When there are lumps of mud or even rocks on the bottom of the tank, the bottom frame 22 and the scraper 21 will be pushed up and shifted upward. Correspondingly, the telescopic connecting frame 18 will produce a contraction action. After passing through the lumps of mud or rocks, it will fall back to the bottom of the tank under its own weight and adhere to it. Therefore, in this scenario, the device will not have the problem of getting stuck.

[0031] See Figure 3 , we can see that:

[0032] The telescopic connecting frame 18 includes two opposite sleeves 18-2, and multiple upper connecting beams 18-3 are installed between the two sleeves 18-2 to combine the two sleeves 18-2 into a whole. A telescopic rod 18-4 is inserted into the lower part of the sleeve 18-2, and a lower connecting beam 18-5 is installed between the lower ends of the telescopic rod 18-4 to combine the two telescopic rods 18-4 into a whole.

[0033] Multiple groups of upper connecting seats 17 are provided at the bottom of the supporting platform 16, and multiple groups of lower connecting seats 27 are provided at the corresponding positions on the top of the bottom frame 22. The upper end of each telescopic connecting frame 18 is fixedly connected to each group of upper connecting seats 17, and the lower end of each telescopic connecting frame 18 is fixedly connected to each group of lower connecting seats 27.

[0034] In this embodiment, the upper connecting seat 17 includes an upper support fixedly connected to the support platform 16 and a flange plate arranged at the lower end of the upper support. The lower connecting seat 27 includes a lower support fixedly connected to the bottom frame 22 and a flange plate arranged at the upper end of the lower support. An upper connecting plate 18-1 is provided at the upper end of the sleeve 18-2 of the telescopic connecting frame 18, and a lower connecting plate 18-6 is provided at the lower end of the telescopic rod 18-4 of the telescopic connecting frame 18. The upper connecting plate 18-1 is fixedly connected to the flange plate of the upper connecting seat 17 by bolts, and the lower connecting plate 18-6 is fixedly connected to the flange plate of the lower connecting seat 27 by bolts.

[0035] As shown in the figure, in this embodiment, three groups of bottom mud pumping components are provided, and correspondingly three mud suction pipes are provided.

[0036] The first bottom mud pumping assembly includes a first mud pump 3 and a first mud box 4. The inlet of the first mud pump 3 is connected to the outlet of the first mud box 4. The outlet of the first mud pump 3 is connected to the mud delivery pipe 5 through the first connecting pipe 2. The inlet of the first mud box 4 is connected to the first mud suction pipe 26 through the first lifting hose 25. The second bottom mud pumping assembly includes a second mud pump 7 and a second mud box 8. The inlet of the second mud pump 7 is connected to the outlet of the second mud box 8. The second mud pump The outlet of 7 is connected to the mud delivery pipe 5 through the second connecting pipe 6, and the inlet of the second mud box 8 is connected to the second mud suction pipe 24 through the second lifting hose 23; the third group of bottom mud pumping components includes a third mud pump 10 and a third mud box 11, the inlet of the third mud pump 10 is connected to the outlet of the third mud box 11, the outlet of the third mud pump 10 is connected to the mud delivery pipe 5 through the third connecting pipe 9, and the inlet of the third mud box 11 is connected to the third mud suction pipe 20 through the third lifting hose 19.

[0037] Operation process:

[0038] Initially, the bottom mud collection device is located at one end of the sedimentation tank, and the travel motor 15 is started. The device moves along the track on the side of the sedimentation tank to the other end of the sedimentation tank, and the mud pumps of each bottom mud pumping assembly are turned on at the same time. During the movement of the bottom frame 22 and its scraper 21 along the bottom of the tank, the scraped bottom mud enters the bell mouth between the adjacent diamond frames formed by the scraper 21, and gathers toward the suction port of the mud suction pipe under the action of pressure. The inside of the suction pipe is a negative pressure environment, so the bottom mud reaching the root position of the bell mouth enters the mud suction pipe upward, and then goes up through the lifting hose and enters the mud box, and then enters the mud delivery pipe 5 through the mud pump and the connecting pipe, and is finally discharged from the mud discharge pipe 1 and enters the receiving mud tank.

Claims

1. A sewage sedimentation tank sludge collection device, characterized by: The invention comprises a support platform (16) capable of self-propelled movement along tracks laid on both sides of a sedimentation tank, a mud delivery pipe (5) and at least one set of bottom mud pumping components are installed on the support platform (16), and a mud discharge pipe (1) is installed at the end of the mud delivery pipe (5); a bottom frame (22) is installed below the support platform (16) using a plurality of telescopic connecting frames (18), and a plurality of L-shaped scraping blades (21) are installed at the bottom of the bottom frame (22) along the length direction, and the bottom edge of each scraping blade (21) is aligned with the bottom edge of the sedimentation tank. The bottom of the pool is in contact with the two adjacent scraper blades (21) and are arranged in a mirror-symmetrical manner. The adjacent ends of the scraper blades (21) are fixedly connected to form a closed diamond frame. At least one mud suction pipe is also installed on the bottom frame (22). The mud suction pipe includes a main pipe and branch pipes located below the two ends of the main pipe. The branch pipes are installed and fixed between the tips of the adjacent diamond frames and a certain distance is left between the lower ends of the branch pipes and the bottom of the pool. The mud suction pipe is connected to the bottom mud pumping assembly through a lifting hose, and the bottom mud pumping assembly is connected to the mud delivery pipe (5) through a connecting pipe.

2. The sewage sedimentation tank bottom mud collection device according to claim 1, characterized in that: Three groups of bottom mud pumping components are provided, and three mud suction pipes are provided; the first group of bottom mud pumping components includes a first mud pump (3) and a first mud box (4), the inlet of the first mud pump (3) is connected to the outlet of the first mud box (4), the outlet of the first mud pump (3) is connected to the mud delivery pipe (5) through a first connecting pipe (2), and the inlet of the first mud box (4) is connected to the first mud suction pipe (26) through a first lifting hose (25); the second group of bottom mud pumping components includes a second mud pump (7) and a second mud box (8), the inlet of the second mud pump (7) is connected to the outlet of the second mud box (8), and the inlet of the second mud pump (7) is connected to the outlet of the second mud box (8). The outlet of the second mud pump (7) is connected to the mud delivery pipe (5) through the second connecting pipe (6), and the inlet of the second mud box (8) is connected to the second mud suction pipe (24) through the second lifting hose (23); the third bottom mud pumping assembly includes a third mud pump (10) and a third mud box (11), the inlet of the third mud pump (10) is connected to the outlet of the third mud box (11), the outlet of the third mud pump (10) is connected to the mud delivery pipe (5) through the third connecting pipe (9), and the inlet of the third mud box (11) is connected to the third mud suction pipe (20) through the third lifting hose (19).

3. The sewage sedimentation tank bottom mud collection device according to claim 2, characterized in that: A plurality of groups of upper connecting seats (17) are provided at the bottom of the supporting platform (16), and a plurality of groups of lower connecting seats (27) are provided at corresponding positions on the top of the bottom frame (22). The upper end of each telescopic connecting frame (18) is fixedly connected to each group of upper connecting seats (17), and the lower end of each telescopic connecting frame (18) is fixedly connected to each group of lower connecting seats (27).

4. The sewage sedimentation tank bottom mud collection device according to claim 3, characterized in that: The telescopic connecting frame (18) comprises two opposite sleeves (18-2), a plurality of upper connecting beams (18-3) are installed between the two sleeves (18-2), a telescopic rod (18-4) is inserted into the lower part of the sleeve (18-2), and a lower connecting beam (18-5) is installed between the lower ends of the telescopic rods (18-4).

5. The sewage sedimentation tank bottom mud collection device according to claim 4, characterized in that: The upper connecting seat (17) includes an upper support fixedly connected to the support platform (16) and a flange plate arranged at the lower end of the upper support. The lower connecting seat (27) includes a lower support fixedly connected to the bottom frame (22) and a flange plate arranged at the upper end of the lower support. An upper connecting plate (18-1) is provided at the upper end of the sleeve (18-2) of the telescopic connecting frame (18), and a lower connecting plate (18-6) is provided at the lower end of the telescopic rod of the telescopic connecting frame (18). The upper connecting plate (18-1) is fixedly connected to the flange plate of the upper connecting seat (17) by bolts, and the lower connecting plate (18-6) is fixedly connected to the flange plate of the lower connecting seat (27) by bolts.

6. The sewage sedimentation tank bottom mud collection device according to claim 5, characterized in that: The supporting platform (16) comprises a platform frame and a platform panel paved on the platform frame. End wheel brackets (13) are installed at both ends of the platform frame. Travel wheels (14) and travel motors (15) for driving the travel wheels (14) are installed on the end wheel brackets (13).

7. The sewage sedimentation tank bottom mud collection device according to claim 6, characterized in that: Safety guardrails (12) are also installed on both sides of the support platform (16).

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