A device for cleaning moss in a secondary sedimentation tank outlet channel

Abstract

The utility model provides a kind of two sedimentation tank effluent channel moss cleaning device, including scraping mechanism, and scraping mechanism is used to scrape the moss of two sedimentation tank effluent channel;Scraping mechanism includes bottom plate, and both sides of bottom plate are hinged with side plate;Bottom plate and the side of side plate are equipped with cut surface, and the other side is connected with collecting cage;Collecting cage is used to collect scraped moss;Scraping mechanism connects mud scraper rotating truss, and moves following mud scraper rotating truss.The utility model side plate is connected with bottom plate by spring, can rotate with channel wall camber, when protruding, spring compression buffer, to be more suitable when scraping off green platform, and the influence to channel wall and equipment is smaller, reduce loss;Collecting cage is received scraped moss by opening frame, avoid moss into subsequent processing system, effectively reduce pump body abrasion risk.

Description

Technical Field

[0001] This utility model relates to the field of secondary sedimentation tank cleaning technology, specifically to a device for cleaning moss from the outlet channel of a secondary sedimentation tank. Background Technology

[0002] Secondary sedimentation tanks are an important functional unit in various wastewater treatment systems. Different tank types and water flow patterns result in different inlet and outlet methods, as well as different structures for the outlet channels and weirs. However, the outlet channels and weirs of secondary sedimentation tanks generally adopt a gravity-flow cascade method, resulting in a relatively slow water flow rate. The effluent from secondary sedimentation tanks is of good quality and rich in phosphorus nutrients, so algae easily grows on the surface of the outlet weirs and channels. Especially in summer, when the temperature is high and the sunlight is strong, the algae grows very quickly, which to some extent affects the effluent quality and seriously impacts the sensory characteristics of the secondary sedimentation tank.

[0003] Currently, most sewage treatment plants use manual methods to clean the moss on the surface of the secondary sedimentation tank effluent channel and effluent weir. The cleaning process is labor-intensive and poses significant safety hazards. Some sewage treatment plants also use simple brushes and other scraping devices installed on the sludge scraper truss, but the cleaning effect is not ideal.

[0004] To improve the cleaning operation of secondary sedimentation tanks, relevant patents have been used to improve and upgrade the cleaning devices. For example, there is a simple device described in CN201911205687.1, a radial flow secondary sedimentation tank cleaning device, and more complex automatic cleaning devices described in CN202421608454.2 and CN202223408436.3. The basic principle of the above devices is to use scrapers and sweeping devices fixed on the sludge scraper truss, plus some spraying devices, to use mechanical rotation and water flushing to scrape away moss and other floating scum on the secondary sedimentation tank embankment, tank wall and tank body, which has improved the secondary sedimentation tank cleaning technology to a certain extent.

[0005] However, most of these automatic cleaning devices are rigid. Since the outlet weir and outlet channel are not standard circular structures, the rigid scraper will inevitably scrape against the side walls of the outlet weir and outlet channel during the movement of the sludge scraper, which can easily cause equipment failure and even damage to the pool, resulting in unnecessary losses.

[0006] Furthermore, during the cleaning process, moss and other vegetation were scraped off directly without being collected or processed. As a result, the moss after cleaning is easily carried into the subsequent deep treatment process by the water flow in the outlet channel, which may cause wear and tear on the secondary booster pump and lead to unnecessary losses. Utility Model Content

[0007] The main purpose of this utility model is to provide a device for cleaning algae from the outlet channel of a secondary sedimentation tank, which solves the problem that existing cleaning devices are prone to causing additional losses when cleaning the outlet channel of a secondary sedimentation tank.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A device for cleaning moss from the outlet channel of a secondary sedimentation tank includes a scraping mechanism for scraping moss from the outlet channel of the secondary sedimentation tank. The scraping mechanism includes a base plate, and side plates are hinged to both sides of the base plate; The bottom plate and side plate have a cut surface on one side and a collection cage connected to the other side; The collection cage is used to collect the moss that has been scraped.

[0009] In the preferred embodiment, the scraping mechanism is connected to the rotating truss of the sludge scraper and moves along with the rotating truss of the sludge scraper.

[0010] In the preferred embodiment, the side plate and the bottom plate are hinged together by a hinge shaft; Spring seats are provided on the inner side of the side plate and the top of the bottom plate; The spring seats on the side plate and the spring seats on the bottom plate are in one-to-one correspondence, and a spring is provided between the two corresponding spring seats.

[0011] In the preferred embodiment, the spring is in a compressed state when the side plate and the bottom plate are in a vertical position.

[0012] In a preferred embodiment, the collection cage includes a fixing frame; The fixing frame forms six frames, five of which are equipped with a first partition net; The adjacent first grids are perpendicular to each other; The other frame is tilted, forming an open frame; The open frame is connected to the scraping mechanism via a connecting bracket.

[0013] In the preferred embodiment, the bottom of the opening frame is fixedly connected to the base plate; The connecting frame includes a connecting frame, one side of which is connected to an open frame; A second partition net is provided inside the connecting frame.

[0014] In the preferred embodiment, the bottom of the connecting frame is connected to the opening frame by a universal joint, and the top of the connecting frame near the side plate is connected to the side plate by a universal joint. The connecting frame is equipped with a guide groove, and the inner side of the opening frame is equipped with a guide block; The guide block passes through the guide groove.

[0015] In the preferred embodiment, the guide groove is an arc-shaped groove; The end of the guide block is provided with a limiting block, and there is a gap between the limiting block and the connecting frame.

[0016] In the preferred embodiment, a pull ring is provided at the top of the base plate, and a drive mechanism is provided inside the rotating truss of the sludge scraper; The drive mechanism is connected to a pull ring, which is used to pull the scraping mechanism and extend and retract the scraping mechanism.

[0017] In a preferred embodiment, the drive mechanism includes a slide rail disposed within the rotating truss of the sludge scraper; The slide rail is connected to a slider. Both ends of the slide rail are equipped with fixing plates; A threaded rod is rotatably connected between the two fixed plates via a bearing. The threaded rod passes through the slider and is slidably connected to the slider. One of the mounting plates is equipped with a motor, and the motor's output shaft is connected to one end of a threaded rod. An electric hoist is installed at the bottom of the slider, and the pull rope of the electric hoist is connected to the pull ring.

[0018] This utility model provides a device for cleaning algae from the effluent channel of a secondary sedimentation tank. By adopting the above solution, it has the following beneficial effects: The side plate is connected to the bottom plate by springs and can rotate with the curvature of the channel wall. When encountering a protrusion, the spring is compressed and buffered, thus making it more adaptable when scraping the green platform, with less impact on the channel wall and equipment, and reducing losses.

[0019] The collection cage catches the scraped moss through an open frame, preventing the moss from entering the subsequent treatment system and effectively reducing the risk of pump wear.

[0020] It moves synchronously with the rotating truss of the sludge scraper, requiring no additional power, resulting in lower costs, easier adjustment, and greater adaptability. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the scraping mechanism of this utility model; Figure 2 This is a structural schematic diagram of the connection between the base plate and the side plate of this utility model; Figure 3 This is a side view of the scraping mechanism of this utility model; Figure 4 This is a schematic diagram of an embodiment of the connecting frame of this utility model; Figure 5 This is a schematic diagram of the drive mechanism of this utility model.

[0022] In the picture: Scraping mechanism 1, base plate 101, side plate 102, hinge shaft 103, pull ring 104, spring seat 105, spring 106, connecting frame 2, connecting frame 201, second partition net 202, universal joint 203, guide groove 204, guide block 205, collection cage 3, fixing frame 301, first partition net 302, opening frame 303, sludge scraper rotating truss 4, drive mechanism 5, slide rail 501, slider 502, fixing plate 503, threaded rod 504, motor 505, electric hoist 6, pull rope 601. Detailed Implementation

[0023] In the embodiments of this application, such as Figure 1 , 2 As shown in Figures 3, 4, and 5, a device for cleaning algae from the effluent channel of a secondary sedimentation tank includes a scraping mechanism 1, a collection cage 3, a connecting frame 2, and a driving mechanism 5.

[0024] The scraping mechanism 1 includes a base plate 101, the bottom edge of which is machined into an acute-angled cut surface for scraping moss from the bottom of the ditch; a pull ring 104 is welded to the top of the base plate 101 for connecting to the drive mechanism 5. Both sides of the bottom plate 101 are hinged with side plates 102. The outer edge of the side plate 102 is processed into a cut surface for scraping moss off the side wall of the canal. The side plate 102 is connected to the bottom plate 101 via a hinge shaft 103. Spring seats 105 are welded to the inner side of the side plate 102 and the top of the bottom plate 101, and springs 106 are installed between the corresponding spring seats 105. When the side plate 102 is perpendicular to the bottom plate 101, the compression of the spring 106 is 20mm, ensuring that the side plate 102 always fits against the channel wall. When encountering a protrusion, the side plate 102 can rotate outward to compress the spring 106, generating a buffer to avoid scratching. After passing the protrusion, the spring 106 pushes the side plate 102 to continue to fit against the channel wall, thus facilitating the stable scraping of moss from the inner wall of the drainage channel without easily damaging the inner wall and equipment.

[0025] To achieve targeted collection of moss and prevent secondary pollution and unnecessary losses, a collection cage 3 is provided. Specifically, it includes a fixing frame 301, which is welded into a hexahedral frame. Five sides are equipped with first partition nets 302, which are stainless steel woven mesh, and adjacent first partition nets 302 are perpendicular to each other. The other side is an open frame 303, which is set at an angle of 30°-45°. The bottom of the open frame 303 is welded and fixed to the base plate 101. The opening size matches the width of the scraping mechanism 1. After scraping the moss, during the continued movement, the scraped moss enters the interior of the collection cage 3 after passing through the open frame 303, and is finally collected between the five first partition nets 302.

[0026] The connection between the first partition net 302 and the opening frame 303 is polished smooth to prevent moss from accumulating.

[0027] In a further embodiment, a connecting frame 2 is also provided, which includes a connecting frame 201. A second partition 202 is provided inside the connecting frame 201. The second partition 202 has the same specifications as the first partition 302. The bottom of the connecting frame 201 is connected to the opening frame 303 through a universal joint 203, and the top of the connecting frame 201 is connected to the side plate 102 through a universal joint 203. Thus, when the side plate rotates, the universal joint 203 can drive the connecting frame 201 to adjust synchronously, and it is not easy to get stuck.

[0028] An arc-shaped guide groove 204 is provided on the side of the connecting frame 201. A guide block 205 is welded to the inside of the opening frame 303. The guide block 205 passes through the guide groove 204 and can slide along the guide groove 204. A limiting block is provided at the end of the guide block 205, with a gap of 5-30mm between it and the connecting frame 201. This can prevent the guide block 205 from falling out of the groove and does not affect the movement of the connecting frame 201, ensuring that the connecting frame 201 can follow stably when the side plate 102 rotates.

[0029] During the scraping process, the connecting frame 201 moves along with the side plate 102, thereby guiding the scraped moss into the collection cage 3 better without affecting the scraping effect.

[0030] In a further embodiment, a drive mechanism 5 is also provided. The drive mechanism 5 includes a slide rail 501 installed on the sludge scraper rotating truss 4. The slide rail 501 is arranged along the length direction of the sludge scraper rotating truss 4. The sludge scraper rotating truss 4 refers to the rotating truss of the sludge scraper used in the existing secondary sedimentation tank. Existing technology can be used.

[0031] A slider 502 is slidably connected to the slide rail 501. Fixed plates 503 are welded to both ends of the slide rail 501. A threaded rod 504 is connected between the fixed plates 503 through a bearing. The threaded rod 504 passes through the slider 502 and is threadedly connected to it. One of the fixed plates 503 is equipped with a motor 505, preferably an SM servo motor, which is connected and controlled in an existing manner. The output shaft of the motor 505 is connected to the threaded rod 504 through a coupling. The motor 505 drives the threaded rod 504 to rotate, which in turn drives the slider 502 to move along the slide rail 501, thereby driving the connected scraping mechanism 1 to move along the length of the sludge scraper rotating truss 4 to adjust the position of the scraping mechanism 1, which is convenient for subsequent replacement and cleaning, and is also convenient for adapting to the position of the secondary sedimentation tank outlet channel.

[0032] The bottom of the slider 502 is equipped with an electric hoist 6, preferably model DH-500. It is connected and controlled in the existing way. The pull rope 601 of the electric hoist 6 is connected to the pull ring 104 of the scraping mechanism 1 to realize the lifting and lowering of the scraping mechanism 1. It can not only adjust the height to adapt to different water depths, but also make it easy to pull up the scraping mechanism 1 and the collection cage 3 after use. Then the staff can replace or clean them in the existing way.

[0033] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A device for cleaning algae from the effluent channel of a secondary sedimentation tank, characterized in that: Includes a scraping mechanism (1), which is used to scrape the moss in the outlet channel of the secondary sedimentation tank; The scraping mechanism (1) includes a base plate (101), and side plates (102) are hinged to both sides of the base plate (101). The bottom plate (101) and the side plate (102) have a cut surface on one side and a collection cage (3) connected to the other side. Collection cage (3) is used to collect the moss that has been scraped.

2. The moss removal device for the effluent channel of a secondary sedimentation tank according to claim 1, characterized in that: The scraping mechanism (1) is connected to the rotating truss (4) of the sludge scraper and moves along with the rotating truss (4) of the sludge scraper.

3. The algae removal device for the effluent channel of a secondary sedimentation tank according to claim 1, characterized in that: The side plate (102) and the bottom plate (101) are hinged together by a hinge shaft (103); Spring seats (105) are provided on the inner side of the side plate (102) and the top of the bottom plate (101). The spring seat (105) of the side plate (102) and the spring seat (105) of the bottom plate (101) correspond one-to-one, and a spring (106) is provided between the two corresponding spring seats (105).

4. The algae removal device for the effluent channel of a secondary sedimentation tank according to claim 3, characterized in that: When the side plate (102) and the bottom plate (101) are in a vertical state, the spring (106) is in a compressed state.

5. The algae removal device for the effluent channel of a secondary sedimentation tank according to claim 1, characterized in that: The collection cage (3) includes a fixing frame (301); The fixing frame (301) forms six frames, five of which are provided with a first partition net (302). The adjacent first partitions (302) are perpendicular to each other; Another frame is tilted and is an open frame (303); The opening frame (303) is connected to the scraping mechanism (1) via the connecting bracket (2).

6. The algae removal device for the effluent channel of a secondary sedimentation tank according to claim 5, characterized in that: The bottom of the open frame (303) is fixedly connected to the base plate (101); The connecting frame (2) includes a connecting frame (201), and an opening frame (303) is connected to one side of the connecting frame (201). A second partition (202) is provided inside the connecting frame (201).

7. The algae removal device for the effluent channel of a secondary sedimentation tank according to claim 6, characterized in that: The bottom of the connecting frame (201) is connected to the opening frame (303) by a universal joint (203), and the top of the connecting frame (201) near the side plate (102) is connected to the side plate (102) by a universal joint (203); The connecting frame (201) is provided with a guide groove (204), and the inner side of the opening frame (303) is provided with a guide block (205). The guide block (205) passes through the guide groove (204).

8. The algae removal device for the effluent channel of a secondary sedimentation tank according to claim 7, characterized in that: The guide groove (204) is an arc-shaped groove; The end of the guide block (205) is provided with a limiting block, and there is a gap between the limiting block and the connecting frame (201).

9. The device for cleaning algae from the effluent channel of a secondary sedimentation tank according to claim 1, characterized in that: The top of the base plate (101) is provided with a pull ring (104), and the rotating truss (4) of the sludge scraper is provided with a drive mechanism (5). The drive mechanism (5) is connected to the pull ring (104) for pulling the scraping mechanism (1) and the retracting scraping mechanism (1).

10. The moss removal device for the effluent channel of a secondary sedimentation tank according to claim 9, characterized in that: The drive mechanism (5) includes a slide rail (501) located inside the rotating truss (4) of the sludge scraper. The slide rail (501) is slidably connected to the slider (502); Both ends of the slide rail (501) are provided with fixing plates (503); A threaded rod (504) is rotatably connected between the two fixed plates (503) via a bearing. The threaded rod (504) passes through the slider (502) and is slidably connected to the slider (502). One of the fixing plates (503) is equipped with a motor (505), and the output shaft of the motor (505) is connected to one end of the threaded rod (504); The bottom of the slider (502) is equipped with an electric hoist (6), and the pull rope of the electric hoist (6) is connected to the pull ring (104).

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