Scum fishing device for sewage treatment tank

Abstract

The utility model relates to the field of sewage scum fishing, and particularly discloses a sewage treatment pond scum fishing device which comprises a sewage pond and a collecting pond fixedly connected to one end of the sewage pond, a first lead screw is rotationally connected to the side wall of the sewage pond, a motor is fixedly connected to the end, away from the collecting pond, of the first lead screw, and the lead screw is in threaded connection with a supporting frame; electric telescopic rods are fixedly connected to the two ends, close to the pool wall of the sewage pool, of the supporting frame, a fishing frame is rotationally connected to the ends, away from the supporting frame, of the electric telescopic rods, a rotating mechanism used for rotating the fishing frame is arranged on the electric telescopic rods, a lifting groove is formed in the connecting position of the collecting pool and the sewage pool, and a lifting plate matched with the lifting groove is slidably connected into the lifting groove; an adjusting mechanism used for controlling the height of the lifting plate is arranged in the lifting groove, an elastic piece is fixedly connected to the bottom of the lifting plate, and a pressing block is fixedly connected to the edge of the side, close to the sewage pool, of the fishing frame. The salvage device has the effects of preventing scum from blocking the salvage device and improving the salvage efficiency.

Description

Technical Field

[0001] This application relates to the field of sewage scum removal, and in particular to a sewage treatment pond scum removal device. Background Technology

[0002] Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering. Wastewater treatment is a process of removing pollutants from water bodies through physical, chemical, and biological means to achieve water purification and resource utilization, aiming to protect the ecological environment and human health.

[0003] In the process of modern urbanization, sewage treatment facilities have become an indispensable part. However, the problem of scum on the surface of sewage ponds is often overlooked or improperly handled, which not only affects the efficiency of sewage treatment but may also lead to environmental pollution. Physical cleaning is a primary method for treating scum on the surface of sewage ponds, but its importance cannot be underestimated. Through physical means, such as grid interception, mechanical scraping, and dredging, scum can be effectively separated from the water surface. The grid interception method uses different grid sizes to intercept large pieces of scum at the inlet of the sewage pond. The mechanical scraping method uses scrapers or rotating scraping devices installed on the pond surface to concentrate the scum to the edge of the pond. The dredging method involves collecting the scum and the scum below the water surface manually or mechanically, and then removing it manually or mechanically.

[0004] Regarding the existing related technologies, the inventors believe that there are the following defects: In the process of removing scum, the scum in the commonly used scum removal devices tends to adhere to the inside of the scum removal device, causing blockage and thus affecting the efficiency of scum removal. Utility Model Content

[0005] To address the problem of scum easily clogging the scum removal device, this application provides a scum removal device for sewage treatment ponds.

[0006] The scum removal device for sewage treatment ponds provided in this application adopts the following technical solution:

[0007] A scum removal device for a sewage treatment pond includes a sewage pond and a collection pond fixed to one end of the sewage pond. The device is characterized in that: a first lead screw is rotatably connected to the side wall of the sewage pond; a motor is fixedly connected to the end of the first lead screw away from the collection pond; a support frame is threadedly connected to the first lead screw; electric telescopic rods are fixedly connected to both ends of the support frame near the wall of the sewage pond; a scum removal frame is rotatably connected to the end of the electric telescopic rod away from the support frame; a rotating mechanism for rotating the scum removal frame is provided on the electric telescopic rod; a lifting groove is provided at the connection between the collection pond and the sewage pond; a lifting plate adapted to the lifting groove is slidably connected within the lifting groove; an adjustment mechanism for controlling the height of the lifting plate is provided within the lifting groove; an elastic element is fixedly connected to the bottom of the lifting plate; and a pressure block is fixedly connected to the edge of the scum removal frame near the sewage pond.

[0008] By adopting the above technical solution, when the motor starts, it drives the first lead screw to rotate, the support frame moves along the first lead screw, and the support frame moves the retrieval frame in the sewage tank. The electric telescopic rod fixed on the support frame controls the depth of the retrieval frame in the sewage tank. The scum in the sewage tank is collected by the moving retrieval frame. When the retrieval frame approaches the collection tank, the electric telescopic rod retracts, raising the retrieval frame above the collection tank. The rotating mechanism rotates the retrieval frame so that the opening of the retrieval frame faces the collection tank, allowing the scum collected in the retrieval frame to fall into the collection tank. The electric telescopic rod extends, causing the pressure block fixed on the retrieval frame to compress the lifting plate, allowing water in the sewage tank to rush towards the retrieval frame, cleaning the scum adhering to the retrieval frame, so that the scum completely falls into the collection tank. The electric telescopic rod retracts, raising the retrieval frame. The first lead screw moves the retrieval frame above the sewage tank, and the rotating mechanism restores the cleaned retrieval frame to its original position.

[0009] Optionally, the rotating mechanism includes a fixed plate fixed to the electric telescopic rod and a cylinder rotatably connected to the fixed plate, wherein one end of the cylinder near the sewage tank is rotatably connected to the retrieval frame.

[0010] By adopting the above technical solution, when the cylinder extends, the retrieval frame rotates along the output end of the electric telescopic rod, thereby causing the scum inside the retrieval frame to fall into the collection pool.

[0011] Optionally, the adjusting mechanism includes a second lead screw rotatably connected to the bottom of the lifting groove, a worm gear coaxially fixed with the second lead screw, a worm gear rotatably connected to the side wall of the lifting groove, and a movable plate threadedly connected to the second lead screw. The worm gear meshes with the second lead screw, extends out of the side wall of the lifting groove, and the movable plate fits against the inside of the lifting groove.

[0012] By adopting the above technical solution, the worm gear is rotated, which drives the worm wheel to rotate, and the worm wheel drives the second lead screw to rotate. The second lead screw drives the moving plate to move up and down inside the lifting groove, thereby changing the height of the lifting plate. This adapts to the different depths of sewage in the sewage tank, ensuring that the height of the lifting plate is always slightly higher than the water surface in the sewage tank. When the lifting plate is compressed, the sewage in the sewage tank flows more easily to the retrieval frame, and the retrieval frame is cleaned.

[0013] Optionally, a sliding groove is provided inside the retrieval frame, and a back plate adapted to the sliding groove is slidably disposed inside the retrieval frame.

[0014] By adopting the above technical solution, the cylinder causes the retrieval frame to rotate, so that the opening of the retrieval frame faces the collection pool. The back plate moves with the rotation of the retrieval frame to the outlet of the retrieval frame, and scrapes away the scum adhering to the inside of the retrieval frame, causing the scum adhering to the inner wall of the retrieval frame to fall into the collection pool.

[0015] Optionally, the lifting plate has a circular hole adapted to the second lead screw, and the diameter of the circular hole is larger than the diameter of the second lead screw.

[0016] By adopting the above technical solution, the second lead screw can be inserted into the circular hole of the lifting plate. The second lead screw does not contact the hole wall. When the height of the moving plate is adjusted, the second lead screw extends into the circular hole, increasing the adjustable height.

[0017] Optionally, the collection tank is equipped with a drain basket for separating the water from the scum.

[0018] By adopting the above technical solution, when the scum is poured into the collection tank by the scooping frame, the drain basket can filter the water in the scum to the bottom of the collection tank, perform preliminary drying of the scum, and facilitate subsequent processing of the scum.

[0019] Optionally, a sealing ring is fixedly connected to the connection between the worm gear and the side wall of the lifting groove, a sealing strip is fixedly connected to the peripheral wall of the moving plate, and a sealing strip is fixedly connected to the opening of the lifting groove.

[0020] By adopting the above technical solution, the sealing strip between the lifting trough and the lifting plate can prevent sewage and scum from entering the lifting trough and prevent scum from getting stuck on the elastic element fixed to the bottom of the lifting plate. The sealing strip between the lifting trough and the moving plate can prevent sewage from entering the lifting trough. The sealing ring between the worm and the side wall of the lifting trough can prevent sewage from flowing out from the connection between the worm and the side wall of the lifting trough.

[0021] Optionally, a buffer strip is fixed to the end face of the lifting plate away from the sewage.

[0022] By adopting the above technical solution, when the retrieval frame rotates, the slider hits the top of the lifting plate, and the buffer strip can prevent the slider from damaging the lifting plate during the impact.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the cylinder extends, the retrieval frame rotates 90 degrees. The cylinder and the electric telescopic rod extend simultaneously, causing the pressure block to compress the lifting plate. The sewage in the sewage tank flows to the retrieval frame through the lifting plate, and the scum adhering to the retrieval frame is cleaned, preventing the scum in the retrieval frame from re-entering the sewage tank and improving the efficiency of scum retrieval.

[0025] 2. When the cylinder extends, the back plate moves along the inside of the retrieval frame to the opening of the retrieval frame. The back plate scrapes away the scum adhering to the inside of the retrieval frame, causing the scum to fall into the collection pool, thus ensuring the cleanliness of the inside of the retrieval frame.

[0026] 3. When the sewage level in the sewage tank changes, the worm gear is twisted, which drives the worm wheel to rotate. The worm wheel drives the second lead screw to rotate, causing the moving plate to move up and down along the lifting groove. This changes the height of the lifting plate, which can adapt to changes in the sewage level in the sewage tank. This ensures that when the lifting plate is compressed, the sewage can flow through the lifting plate to the retrieval frame and clean the retrieval frame. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 It is along Figure 1 Schematic diagram of the cross-sectional structure along line AA;

[0029] Figure 3 yes Figure 2 Enlarged diagram of part B.

[0030] Reference numerals in the attached drawings: 1. Sewage tank; 2. Collection tank; 31. First lead screw; 32. Motor; 33. Support frame; 34. Electric telescopic rod; 41. Fixing plate; 42. Cylinder; 51. Retrieval frame; 52. Back plate; 53. Pressing block; 61. Lifting groove; 62. Lifting plate; 63. Elastic element; 71. Worm gear; 72. Worm wheel; 73. Second lead screw; 74. Moving plate; 8. Drain basket. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a device for removing scum from a wastewater treatment pond. (Refer to...) Figure 1-3The scum removal device for a sewage treatment pond includes a sewage pond 1. A collection pond 2 is fixedly connected to one end of the sewage pond 1. A first lead screw 31 is rotatably connected to the side wall of the sewage pond 1. A sliding rod is fixedly connected to the other side of the sewage pond 1. A motor 32 is fixedly connected to the end of the first lead screw 31 away from the collection pond 2. A support frame 33 with a U-shaped structure is threaded onto the first lead screw 31. The other end of the support frame 33 is slidably connected to the sliding rod. Electric telescopic rods 34 are fixedly connected to the side walls of the support frame 33 near the sewage pond 1. A scum removal frame 51 is provided at the end of the electric telescopic rod 34 near the sewage pond 1. A pressure block 53 is fixedly connected to the edge of the retrieval frame 51 near the sewage tank 1. A rotating mechanism for controlling the rotation of the retrieval frame 51 is provided at the end of the electric telescopic rod 34 near the sewage tank 1. A lifting groove 61 is fixedly connected or integrally formed at the connection between the sewage tank 1 and the collection tank 2. A matching lifting plate 62 is slidably connected in the lifting groove 61. An elastic element 63 is fixedly connected to the end of the lifting plate 62 away from the support frame 33. The elastic element 63 can be a spring. An adjustment mechanism for adjusting the height of the lifting plate 62 is provided in the lifting groove 61. A drain basket 8 is provided in the collection tank 2.

[0033] Motor 32 drives the first lead screw 31 to rotate, causing the support frame 33 to move back and forth along the first lead screw 31. The electric telescopic rod 34 adjusts the height of the retrieval frame 51 according to the sewage level in the sewage tank 1, ensuring that the retrieval frame 51 is always submerged in the sewage. As the retrieval frame 51 moves with the support frame 33, it collects floating scum on the water surface and scum below the water surface into the frame. When the retrieval frame 51 moves to a position close to the collection tank 2, the electric telescopic rod 34 shortens, lifting the retrieval frame 51 above the water surface and over the lifting trough 61 to above the collection tank 2. The rotating mechanism rotates the retrieval frame 51 90 degrees, so that the opening of the retrieval frame 51 faces the collection tank 2. The scum collected in the retrieval frame 51 falls into the collection tank 2 due to gravity. The electric telescopic rod extends, causing the pressure block 53 to compress the lifting plate 62. Sewage in sewage tank 1 flows to the retrieval frame 51, and the scum adhering to the retrieval frame 51 is washed away. The drain basket 8 filters the sewage in the scum to the bottom of the collection tank 2, and performs preliminary drying of the scum. The sewage in the collection tank 2 can be introduced into sewage tank 1 through the lift pump. After rinsing, when the electric telescopic rod 34 and the cylinder 42 retract, the pressure block 53 separates from the lifting plate 62. The spring raises the lifting plate 62, so that the sewage in sewage tank 1 stops flowing into the collection tank 2. The motor 32 drives the first lead screw 31 to reverse, which moves the retrieval frame 51 to the top of sewage tank 1. The rotating mechanism rotates the retrieval frame 51 back to its original position. The retrieval frame 51 moves to the end of sewage tank 1 away from the collection tank 2. The electric telescopic rod 34 extends, so that the retrieval frame 51 extends into sewage tank 1.

[0034] Reference Figure 1-3The rotating mechanism includes a fixed plate 41 fixed to the output end of the electric telescopic rod 34 and a cylinder 42 rotatably connected to the fixed plate 41. The end of the cylinder 42 near the sewage tank 1 is rotatably connected to the retrieval frame 51. The adjusting mechanism includes a worm gear 71 rotatably connected to the side wall of the lifting trough 61, a worm wheel 72 rotatably connected to the bottom of the lifting trough 61, a second lead screw 73 coaxially fixed to the worm wheel 72, and a moving plate 74 threadedly connected to the second lead screw 73. The second lead screw 73 passes through the moving plate 74, and the moving plate 74 fits against the inner wall of the lifting trough 61. The worm gear 71 passes through the side wall of the lifting trough 61. The lifting plate 62 has a round hole, and the second lead screw 73 extends into the round hole. The diameter of the round hole is slightly larger than the diameter of the second lead screw 73.

[0035] When cylinder 42 extends, it drives the retrieval frame 51 to rotate along the output end of the electric telescopic rod 34, causing the retrieval frame 51 to rotate 90 degrees, so that the scum inside the retrieval frame 51 falls into the collection tank 2 due to gravity. When the sewage level in the sewage tank 1 changes, the worm gear 71 is twisted, which drives the worm wheel 72 to rotate. The worm wheel 72 drives the second lead screw 73 to rotate, and the second lead screw 73 drives the moving plate 74 to move up and down. The moving plate 74 changes the height of the lifting plate 62, so that the height of the lifting plate 62 is always slightly higher than the water surface of the sewage tank 1. When cylinder 42 drives the retrieval frame 51 to rotate, the sewage in the sewage tank 1 has little impact on cylinder 42, which can extend the service life of the device.

[0036] Reference Figure 2 The retrieval frame 51 has a sliding groove, and a back plate 52 adapted to the sliding groove is slidably disposed inside the retrieval frame 51. A silicone pad to prevent scratching is fixed to the side wall of the retrieval frame 51.

[0037] When the cylinder 42 extends to rotate the retrieval frame 51, the back plate 52 can slide to the opening of the retrieval frame 51. The back plate 52 scrapes away the scum adhering to the inside of the retrieval frame 51, and can further clean the scum adhering to the inside of the retrieval frame 51. The silicone pad fixed to the side wall of the retrieval frame 51 can prevent the retrieval frame 51 from rubbing against the inner side wall of the sewage tank 1 when it moves.

[0038] Reference Figure 1-3 A sealing ring is fixed at the connection between the worm gear 71 and the side wall of the lifting groove 61, a sealing strip is fixed at the periphery of the moving plate 74, and a sealing strip is fixed at the opening of the lifting groove 61; a buffer strip is fixed at the end face of the lifting plate 62 away from the sewage tank 1, and the buffer strip is directly opposite the pressure block 53.

[0039] The sealing strip at the opening of the lifting trough 61 can prevent scum and sewage from entering the lifting trough 61. The sealing strip fixed to the peripheral wall of the moving plate 74 fits against the inner peripheral wall of the lifting trough 61, which can further prevent sewage from entering the lifting trough 61. The sealing ring can prevent sewage from flowing out from the connection between the worm gear 71 and the side wall of the lifting trough 61, thus preventing sewage from polluting the environment.

[0040] The implementation principle of the scum removal device for a sewage treatment pond according to an embodiment of this application is as follows: Motor 32 drives the first lead screw 31 to rotate, causing the support frame 33 to move back and forth on the first lead screw 31. The support frame 33 drives the scum removal frame 51 to move back and forth in the sewage pond 1, collecting the scum in the sewage pond 1. Electric telescopic rod 34 and cylinder 42 adjust the height of the scum removal frame 51 according to the height of the sewage in the sewage pond 1, ensuring that the scum removal frame 51 is always submerged in the sewage. When the scum removal frame 51 approaches the collection pond 2, the electric telescopic rod 34 and cylinder 42 retract, moving the scum removal frame 51 away from the water surface of the sewage pond 1. The first lead screw 31 drives the scum removal frame 51 over the lifting trough 61 to above the collection pond 2. When the cylinder 42 extends, it rotates the scum removal frame 51 90 degrees, causing the scum inside the scum removal frame 51 to fall into the drain basket 8 of the collection pond 2. The back plate 52 in the scum removal frame 51 slides... The device moves to the opening of the retrieval frame 51, scraping away the scum adhering to the inside of the retrieval frame 51. The electric telescopic rod 34 and cylinder 42 extend, causing the pressure block 53 on the retrieval frame 51 to compress the lifting plate 62. Sewage in the sewage tank 1 flows to the retrieval frame 51, cleaning it. When the electric telescopic rod 34 and cylinder 42 retract, the pressure block 53 separates from the lifting plate 62, and the spring raises the lifting plate 62, stopping the sewage from flowing into the collection tank 2. When the sewage level in the sewage tank 1 changes, the worm gear 71 is twisted, which drives the second lead screw 73 to rotate, causing the moving plate 74 to move up and down in the lifting groove 61, thereby changing the height of the lifting plate 62 so that its height is higher than the water surface of the sewage tank 1. This device can effectively clean the scum adhering to the inside of the retrieval frame 51, improving the scum cleaning efficiency.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sewage treatment tank scum bailing device, comprising a sewage tank (1) and a collection tank (2) fixed to one end of the sewage tank (1), characterized in that: A first lead screw (31) is rotatably connected to the side wall of the sewage tank (1). A motor (32) is fixedly connected to the end of the first lead screw (31) away from the collection tank (2). A support frame (33) is threadedly connected to the first lead screw (31). Electric telescopic rods (34) are fixedly connected to both ends of the support frame (33) near the wall of the sewage tank (1). A retrieval frame (51) is rotatably connected to the end of the electric telescopic rod (34) away from the support frame (33). A retrieval frame (51) is provided on the electric telescopic rod (34). The rotating mechanism of the retrieval frame (51) is rotated. A lifting groove (61) is provided at the connection between the collection pool (2) and the sewage pool (1). A lifting plate (62) adapted to the lifting groove (61) is slidably connected in the lifting groove (61). An adjustment mechanism for controlling the height of the lifting plate (62) is provided in the lifting groove (61). An elastic element (63) is fixedly connected to the bottom of the lifting plate (62). A pressure block (53) is fixedly connected to the edge of the retrieval frame (51) near the sewage pool (1).

2. The scum bailing device for a sewage treatment tank according to claim 1, characterized by: The rotating mechanism includes a fixed plate (41) fixed to the electric telescopic rod (34) and a cylinder (42) rotatably connected to the fixed plate (41). The end of the cylinder (42) near the sewage tank (1) is rotatably connected to the retrieval frame (51).

3. The scum bailing device for a sewage treatment tank according to claim 1, characterized in that: The adjusting mechanism includes a second lead screw (73) rotatably connected to the bottom of the lifting groove (61), a worm gear (72) coaxially fixed with the second lead screw (73), a worm (71) rotatably connected to the side wall of the lifting groove (61), and a moving plate (74) threadedly connected to the second lead screw (73). The worm (71) meshes with the second lead screw (73), the worm (71) extends out of the side wall of the lifting groove (61), and the moving plate (74) fits against the inside of the lifting groove (61).

4. The scum bailing device for a sewage treatment tank according to claim 1, characterized by: The retrieval frame (51) is provided with a sliding groove, and a back plate (52) adapted to the sliding groove is slidably disposed in the retrieval frame (51).

5. The scum bailing device for a sewage treatment tank according to claim 3, characterized by: The lifting plate (62) has a circular hole that matches the second lead screw (73), and the diameter of the circular hole is larger than the diameter of the second lead screw (73).

6. The scum bailing device for a sewage treatment tank according to claim 1, characterized by: The collection tank (2) is equipped with a drain basket (8) for separating the water from the scum.

7. The scum bailing device for a sewage treatment tank according to claim 3, characterized by: A sealing ring is fixedly connected at the connection between the worm gear (71) and the side wall of the lifting groove (61), a sealing strip is fixedly connected to the peripheral wall of the moving plate (74), and a sealing strip is fixedly connected to the opening of the lifting groove (61).

8. The scum bailing device for a sewage treatment tank according to claim 1, characterized by: A buffer strip is fixed to the top of the lifting plate (62).

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