Sewage self-cleaning spiral sedimentation tank bottom mud scraper

Abstract

The utility model provides a sewage self-cleaning spiral sedimentation tank bottom mud scraper, which relates to the field of sedimentation tank bottom mud scrapers, and comprises a spiral mud scraper body and a rotary machine base, the left side of the spiral mud scraper body is connected with the rotary machine base through a fixed seat, the rear side end of the spiral mud scraper body is provided with a mud pushing plate, and the mud pushing plate is connected with the rotary machine base through a fixed seat. A first slope surface is arranged at the front end of the mud pushing plate, a second slope surface is arranged on the rear side of the mud pushing plate, a connecting plate is welded to the side end of the mud pushing plate, a coupling block is in threaded connection with the connecting plate through a fastening bolt, a first rotating shaft is fixedly connected to the inner side of the coupling block, and a forward and reverse rotation motor is connected to the lower end of the first rotating shaft. The problems that in the prior art, the abrasion degree is increased due to the fact that the blade edge of the spiral scraper makes contact with the pool bottom, and sludge on the bottom surface of the pool bottom is difficult to scrape without making contact with the pool bottom are solved.

Description

Technical Field

[0001] This utility model relates to the field of sedimentation tank bottom sludge scrapers, specifically to a self-cleaning spiral sedimentation tank bottom sludge scraper. Background Technology

[0002] The main function of a sedimentation tank is to achieve solid-liquid separation during wastewater treatment. It slows the flow rate or provides sufficient retention time, allowing suspended solid particles to settle to the bottom and form sludge, thus separating the solids from the liquid. The resulting bottom sludge is scraped off and cleaned by a scraper. A search revealed an existing technology (publication number: CN202223267320.2) that describes a sludge scraper. The description states that "by setting the planar or curved scraper blades into a spiral scraper structure, the force on the scraper changes from radial thrust (viewed from the top of the sedimentation tank) as the main load to radial tension as the main load, thereby enabling the rotating shaft to achieve a wider bearing capacity. The spiral scraper changes the traditional force distribution of the scraper blades. At this point, changes in sludge concentration or sludge layer thickness have a significantly reduced impact on the spiral scraper's force, giving the scraper greater resistance to impact from sludge concentrations." However, the existing technology suffers from the problem that the spiral scraper blades' edges in contact with the tank bottom exacerbate wear, and those not in contact with the bottom have difficulty scraping off the sludge from the bottom surface. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a self-cleaning spiral sedimentation tank bottom sludge scraper is provided to solve the problem that in existing technologies, the contact between the edge of the spiral scraper blade and the bottom of the tank exacerbates wear, and the lack of contact with the bottom makes it difficult to scrape off the sludge on the bottom surface of the tank.

[0004] To achieve the above objectives, a self-cleaning spiral sedimentation tank bottom sludge scraper is provided, comprising: a spiral scraper body and a rotating base, wherein the left side of the spiral scraper body is connected to the rotating base via a fixed seat.

[0005] A pusher plate is provided at the rear end of the spiral scraper plate. A first inclined surface is provided at the front end of the pusher plate. A second inclined surface is provided at the rear end of the pusher plate. A connecting plate is welded to the side end of the pusher plate. A shaft connecting block is screwed to the connecting plate by fastening bolts. A rotating shaft is fixedly connected to the inner side of the shaft connecting block. A forward and reverse motor is connected to the lower end of the rotating shaft.

[0006] Furthermore, a drive shaft is connected to the left end of the fixed seat; and the right end of the fixed seat is sealed to the rotating base, and a spiral scraper is welded to the surface of the drive shaft.

[0007] Furthermore, a slot is provided on the lower end face of the rotating base, and a fixing hole is provided on the surface of the connecting plate; and a fastening bolt passes through the fixing hole.

[0008] Furthermore, a forward / reverse motor and a stepper motor are fixed inside the rotating base, and a controller is electrically connected below the stepper motor.

[0009] Furthermore, a second rotating shaft is connected to the left side of the stepper motor, and the left end of the second rotating shaft is connected to the drive shaft of the spiral scraper body.

[0010] Furthermore, the shaft connector is located on the upper surface of the rotating base; and a connecting plate is inserted and fixed to the extended end on the left side of the shaft connector.

[0011] Furthermore, the pusher plate, the first inclined surface, the second inclined surface, the connecting plate, and the shaft connecting block constitute the auxiliary scraping structure of the spiral scraper plate body.

[0012] The beneficial effects of this utility model are as follows: the self-cleaning spiral sedimentation tank bottom sludge scraper of this utility model uses a forward and reverse motor and a stepper motor in the rotating base to drive the spiral scraper body and the pusher plate to rotate. The pusher plate rotates along the bottom surface of the sewage sedimentation tank, pushing the sludge settled at the bottom of the tank to the spiral scraper body, so that the spiral scraper body concentrates and outputs the sludge to the outside, which is convenient for thoroughly scraping the sludge attached to the bottom surface of the sewage sedimentation tank. At the same time, it avoids wear between the sewage sedimentation tank and the bottom of the tank, extends the service life of the spiral sedimentation tank bottom sludge scraper, and improves the scraping effect of the spiral scraper. Attached Figure Description

[0013] Figure 1 This is a top view schematic diagram of the bottom sludge scraper of the self-cleaning spiral sedimentation tank of this utility model embodiment.

[0014] Figure 2 This is a front view cross-sectional structural diagram of the bottom sludge scraper of the self-cleaning spiral sedimentation tank of the present invention.

[0015] Figure 3 This is a front view structural diagram of the bottom sludge scraper of the self-cleaning spiral sedimentation tank of this utility model embodiment.

[0016] Figure 4 This is a top view of the pusher plate according to an embodiment of the present invention.

[0017] In the diagram: 1. Spiral scraper body; 11. Drive shaft; 12. Fixed base; 2. Pusher plate; 21. First slope; 22. Second slope; 23. Connecting plate; 24. Fixing hole; 3. Rotating base; 31. Shaft connecting block; 32. Rotating shaft one; 33. Forward and reverse motor; 34. Rotating shaft two; 35. Controller; 36. Stepper motor. Detailed Implementation

[0018] Reference Figures 1 to 4As shown, this utility model provides a self-cleaning spiral sedimentation tank bottom sludge scraper, including: a spiral scraper body 1 and a rotating base 3. The left side of the spiral scraper body 1 is connected to the rotating base 3 via a fixed seat 12.

[0019] A pusher plate 2 is provided at the rear end of the spiral scraper plate body 1. A first inclined surface 21 is provided at the front end of the pusher plate 2. A second inclined surface 22 is provided at the rear end of the pusher plate 2. A connecting plate 23 is welded to the side end of the pusher plate 2. A shaft connecting block 31 is screwed to the connecting plate 23 by fastening bolts. A rotating shaft 32 is fixedly connected to the inner side of the shaft connecting block 31. A forward and reverse motor 33 is connected to the lower end of the rotating shaft 32.

[0020] First, the rotating base 3 is installed and fixed at the center of the bottom of the sewage sedimentation tank. The forward and reverse motor 33 and the stepper motor 36 inside the rotating base 3 drive the spiral scraper body 1 and the pusher plate 2 to rotate. The pusher plate 2 rotates along the bottom surface of the sewage sedimentation tank, pushing the sludge settled at the bottom of the tank to the spiral scraper body 1. The spiral scraper body 1 then concentrates and outputs the sludge to the outside, which facilitates the thorough scraping of the sludge attached to the bottom surface of the sewage sedimentation tank. At the same time, it avoids wear between the sewage sedimentation tank and the bottom of the tank, extends the service life of the spiral sedimentation tank bottom sludge scraper, and improves the scraping effect of the spiral scraper.

[0021] In this embodiment, a drive shaft 11 is connected to the left end of the fixed base 12; and the right end of the fixed base 12 is sealed to the rotating base 3. A spiral scraper body 1 is welded to the surface of the drive shaft 11.

[0022] In a preferred embodiment, the drive shaft 11 is rotated by the drive of the rotating shaft 34, thereby causing the spiral scraper plate 1 to rotate and transport the sludge around the spiral scraper plate 1 to the outer end.

[0023] In this embodiment, a slot is provided on the lower end face of the rotating base 3, and a fixing hole 24 is provided on the surface of the connecting plate 23; a fastening bolt passes through the fixing hole 24. A forward and reverse motor 33 and a stepper motor 36 are fixed inside the rotating base 3, and a controller 35 is electrically connected below the stepper motor 36. A second rotating shaft 34 is connected to the left side of the stepper motor 36, and the left end of the second rotating shaft 34 is connected to the drive shaft 11 of the spiral scraper body 1. A shaft connecting block 31 is located on the upper surface of the rotating base 3; and a connecting plate 23 is inserted and fixed to the left extended end of the shaft connecting block 31.

[0024] In a preferred embodiment, the reversible motor 33 and the stepper motor 36 within the rotating base 3 drive the pusher plate 2 to rotate in a circle and the spiral scraper plate 1 to rotate in place, respectively. This scrapes away and transports the sludge deposited on the bottom surface of the sedimentation tank through the pusher plate 2 and the spiral scraper plate 1, facilitating mechanized cleaning of the sludge at the bottom of the sewage sedimentation tank and improving the cleaning efficiency of the bottom surface. The controller 35 facilitates automatic control of the start and stop of the reversible motor 33 and the stepper motor 36.

[0025] In this embodiment, the pusher plate 2, the first inclined surface 21, the second inclined surface 22, the connecting plate 23, and the shaft connecting block 31 constitute the auxiliary scraping structure of the spiral scraper plate body 1.

[0026] As a preferred implementation, the auxiliary sludge scraping structure of the spiral scraper plate 1 facilitates the movement of a large area of ​​sludge from the bottom surface of the sewage sedimentation tank to the spiral scraper plate 1, so that the spiral scraper plate 1 can fully scrape off the sludge attached to the bottom surface of the sewage sedimentation tank, while avoiding wear between the sewage sedimentation tank and the bottom of the tank, and extending the service life of the spiral sedimentation tank bottom sludge scraper.

[0027] This utility model of a self-cleaning spiral sedimentation tank bottom sludge scraper effectively solves the problems in the prior art where the edge of the spiral scraper blade in contact with the tank bottom exacerbates wear, and the lack of contact with the tank bottom makes it difficult to scrape off the sludge on the bottom surface of the tank. It facilitates the thorough scraping of the sludge attached to the bottom surface of the sewage sedimentation tank, while avoiding wear between the sewage sedimentation tank and the tank bottom, extending the service life of the spiral sedimentation tank bottom sludge scraper, and improving the scraping effect of the spiral scraper. It is suitable for self-cleaning spiral sedimentation tank bottom sludge scrapers.

Claims

1. A self-cleaning spiral sedimentation tank bottom sludge scraper, comprising: The spiral scraper body (1) and the rotating base (3) are characterized in that: the left side of the spiral scraper body (1) is connected to the rotating base (3) via a fixed seat (12). The rear end of the spiral scraper body (1) is provided with a pusher plate (2), the front end of the pusher plate (2) is provided with a first inclined surface (21), the rear side of the pusher plate (2) is provided with a second inclined surface (22), the side end of the pusher plate (2) is welded with a connecting plate (23), the connecting plate (23) is screwed with a shaft connecting block (31) by fastening bolts, the inner side of the shaft connecting block (31) is fixedly connected with a rotating shaft (32), the lower end of the rotating shaft (32) is connected with a forward and reverse motor (33), the inner side of the rotating base (3) is fixed with a forward and reverse motor (33) and a stepper motor (36), the lower part of the stepper motor (36) is electrically connected with a controller (35), the left side of the stepper motor (36) is connected with a rotating shaft (34), the left end of the rotating shaft (34) is connected to the transmission shaft (11) of the spiral scraper body (1).

2. The self-cleaning spiral sedimentation tank bottom sludge scraper according to claim 1, characterized in that, The left end of the fixed seat (12) is connected to the drive shaft (11); and the right end of the fixed seat (12) is sealed to the rotating base (3). The surface of the drive shaft (11) is welded with a spiral scraper body (1).

3. The self-cleaning spiral sedimentation tank bottom sludge scraper according to claim 1, characterized in that, The lower end face of the rotating base (3) is provided with a slot, and the surface of the connecting plate (23) is provided with a fixing hole (24); and a fastening bolt is connected through the fixing hole (24).

4. The self-cleaning spiral sedimentation tank bottom sludge scraper according to claim 1, characterized in that, The shaft connector (31) is located on the upper surface of the rotating base (3); and a connecting plate (23) is inserted and fixed at the left extension end of the shaft connector (31).

5. The self-cleaning spiral sedimentation tank bottom sludge scraper according to claim 1, characterized in that, The pusher plate (2), the first slope (21), the second slope (22), the connecting plate (23), and the shaft connecting block (31) constitute the auxiliary scraping structure of the spiral scraper plate body (1).

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