A municipal sludge treatment device based on municipal environmental protection

Abstract

This invention relates to the field of sludge treatment technology, specifically to a municipal sludge treatment device based on municipal environmental protection. The device includes a sludge treatment tank. A partition is fixedly connected to the upper part of the inner wall of the tank. A hollow rod is coaxially rotatably connected to the center of the bottom surface of the partition. Several stirring plates with internal channels are fixedly connected to the lower part of the hollow rod, and the channels of the stirring plates communicate with the hollow rod. This municipal sludge treatment device, based on municipal environmental protection, uses a geared motor to drive a rotating rod to rotate clockwise. The rotating rod drives the air inlet cylinder and the hollow rod to rotate synchronously. The hollow rod drives the stirring plates to stir the sludge. During the clockwise rotation of the air inlet cylinder, air can also be ejected through the hollow rod from the one-way nozzles of the stirring plates, generating bubbles while the sludge is being stirred, resulting in more thorough stirring.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, specifically to a municipal sludge treatment device based on municipal environmental protection. Background Technology

[0002] With the acceleration of urbanization and the widespread construction of sewage treatment facilities, the production of municipal sludge continues to rise, making its efficient treatment and disposal a major challenge in the field of urban environmental protection. Sludge has a high water content and complex composition, containing large amounts of organic matter, pathogens, and heavy metals, among other harmful substances. Improper treatment can easily cause secondary pollution, seriously threatening soil and water safety and public health. Therefore, developing efficient and environmentally friendly sludge treatment technologies to achieve sludge reduction, stabilization, and resource utilization is a critical issue that urgently needs to be addressed in current municipal environmental engineering.

[0003] Currently, common sludge treatment methods include thickening, dewatering, anaerobic digestion, aerobic fermentation, and thermal drying, among which mechanical dewatering is the most widely used core volume reduction method. However, traditional dewatering equipment often has shortcomings in its process, especially in the sludge conditioning stage. The mixing of flocculants and sludge mainly relies on simple stirring or pipeline mixing, which easily leads to problems such as uneven stirring and insufficient flocculation reaction. This results in high reagent consumption and poor floc formation, which in turn affects the subsequent dewatering efficiency, leaving the dewatered sludge cake with a still high moisture content, increasing the difficulty and cost of subsequent treatment and disposal.

[0004] To address the aforementioned issues, we have made improvements and proposed a municipal sludge treatment device based on municipal environmental protection. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a municipal sludge treatment device based on municipal environmental protection, including a sludge treatment tank. A partition is fixedly connected to the upper part of the inner wall of the sludge treatment tank. A hollow rod is coaxially rotatably connected to the center of the bottom surface of the partition. A plurality of stirring plates with internal channels are fixedly connected to the lower part of the hollow rod, and the channels of the stirring plates are connected to the hollow rod. One end of the hollow rod extending above the partition is coaxially fixedly connected to and communicates with an air inlet cylinder. An air filling assembly is installed inside the air inlet cylinder. The air filling assembly includes an air filling piston that is sealed and slidably connected inside the air inlet cylinder. A through hole is opened on the top surface of the air filling piston. A hollow piston rod is coaxially fixedly connected to and communicates with the center of the top surface of the air filling piston. A one-way part is installed inside the hollow piston rod. A rotating rod is coaxially fixedly connected to the center of the top surface of the air inlet cylinder. A portal support plate is fixedly installed on the top surface of the sludge treatment tank. One end of the rotating rod extending to the outside of the sludge treatment tank is rotatably connected to the inner top surface of the portal support plate. A dosing cylinder is fixedly connected to the top surface of the partition, and a dosing piston is slidably connected to the inner wall of the dosing cylinder. A solid piston rod is fixedly connected to the center of the top surface of the dosing piston, and a reciprocating drive unit is movably connected to one end of the solid piston rod that extends through to the outside of the sludge treatment tank.

[0006] As a preferred embodiment of the present invention, a plurality of one-way air nozzles are evenly installed on the top and bottom surfaces of the stirring plate, and the plurality of one-way air nozzles are all connected to the channel of the stirring plate.

[0007] As a preferred embodiment of the present invention, the bottom surface of the sludge treatment tank is fixedly equipped with a plurality of support legs, the top surface and the bottom surface of the sludge treatment tank are respectively fixedly equipped with an inlet and an outlet, the bottom end of the inlet extends to the bottom of the partition, and a valve is installed in the outlet.

[0008] As a preferred embodiment of the present invention, a fixed cylinder is fixedly installed in the middle of the inner top surface of the sludge treatment tank, and the inner wall of the fixed cylinder is provided with a contour curve groove. A sliding rod is horizontally fixed to the outer wall of the hollow piston rod, and a guide groove is vertically opened on the outer wall of the air inlet cylinder. The outer wall of the sliding rod is slidably connected to the guide groove, and the end of the sliding rod is slidably connected inside the contour curve groove of the fixed cylinder.

[0009] As a preferred embodiment of the present invention, the one-way part includes a perforated plate and a sealing ring fixedly connected to the inner wall of the hollow piston rod. A spring rod is fixedly installed in the middle of the top surface of the perforated plate, and a sealing plate that contacts the sealing ring is coaxially fixedly connected to the top surface of the spring rod.

[0010] As a preferred embodiment of the present invention, a geared motor is installed on the top surface of the portal support plate, and the output shaft of the geared motor is coaxially and fixedly connected to the rotating rod.

[0011] As a preferred embodiment of the present invention, the reciprocating drive unit includes a connecting plate and a driven bevel gear. The connecting plate is hinged to the top end of the solid piston rod via a hinge seat. The other end of the connecting plate is hinged to the side of the driven bevel gear. The driven bevel gear meshes with a driving bevel gear. The driving bevel gear is coaxially rotatably connected to the outer wall of the rotating rod. The driven bevel gear is rotatably connected to the side of the portal support plate.

[0012] As a preferred embodiment of the present invention, the top surface of the active bevel gear is provided with an anti-reverse rotation part, the anti-reverse rotation part includes a circular groove formed on the top surface of the active bevel gear, a plurality of right-angled triangular blocks are evenly installed on the inner wall of the circular groove, and a spring plate that can engage with the right-angled side of the right-angled triangular block is fixedly connected to the outer wall of the rotating rod.

[0013] As a preferred embodiment of the present invention, the side of the dosing cylinder is connected to an external liquid flocculant storage tank through a feed pipe, and the bottom of the dosing cylinder is connected to a discharge pipe, and both the feed pipe and the discharge pipe are equipped with one-way valves.

[0014] The beneficial effects of this invention are as follows: This municipal sludge treatment device based on municipal environmental protection uses a geared motor to drive a rotating rod to rotate clockwise. The rotating rod drives the air inlet cylinder and the hollow rod to rotate synchronously. The hollow rod drives the stirring plate to stir the sludge. During the clockwise rotation of the air inlet cylinder, air can also be sprayed out through the hollow rod from the one-way air nozzle of the stirring plate, so as to generate bubbles while stirring the sludge, making the stirring more thorough. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional schematic diagram of a municipal sludge treatment device based on municipal environmental protection according to the present invention. Figure 2 This is a top view schematic diagram of a municipal sludge treatment device based on municipal environmental protection according to the present invention; Figure 3 This invention relates to a municipal sludge treatment device based on municipal environmental protection. Figure 2 Schematic diagram of section AA in the diagram; Figure 4 This invention relates to a municipal sludge treatment device based on municipal environmental protection. Figure 3 Enlarged diagram of point A in the diagram; Figure 5 This is a three-dimensional schematic diagram of the reciprocating drive unit of a municipal sludge treatment device based on municipal environmental protection according to the present invention. In the diagram: 1. Sludge treatment tank; 2. Baffle plate; 3. Hollow rod; 4. Stirring plate; 5. Air inlet cylinder; 6. Gas filling piston; 7. Hollow piston rod; 8. Rotating rod; 9. Portal support plate; 10. Dosing cylinder; 11. Dosing piston; 12. Solid piston rod; 13. Fixed cylinder; 14. Sliding rod; 15. Orifice plate; 16. Sealing ring; 17. Spring rod; 18. Sealing plate; 19. Gear motor; 20. Connecting plate; 21. Driven bevel gear; 22. Driving bevel gear; 23. Right-angled triangular block. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Example: Figures 1-5As shown, a municipal sludge treatment device based on municipal environmental protection includes a sludge treatment tank 1. A partition 2 is fixedly connected to the upper part of the inner wall of the sludge treatment tank 1. A hollow rod 3 is coaxially rotatably connected to the center of the bottom surface of the partition 2. A plurality of stirring plates 4 with internal channels are fixedly connected to the lower part of the hollow rod 3, and the channels of the stirring plates 4 are connected to the hollow rod 3.

[0018] The hollow rod 3 extends to one end above the partition plate 2 and is coaxially fixedly connected to and communicates with the air inlet cylinder 5. An air filling assembly is installed inside the air inlet cylinder 5. The air filling assembly includes an air filling piston 6 that is sealed and slidably connected inside the air inlet cylinder 5. A through hole is opened on the top surface of the air filling piston 6. A hollow piston rod 7 is coaxially fixedly connected to and communicates with the center of the top surface of the air filling piston 6. A one-way part is installed inside the hollow piston rod 7. A rotating rod 8 is coaxially fixedly connected to the center of the top surface of the air inlet cylinder 5. A portal support plate 9 is fixedly installed on the top surface of the sludge treatment tank 1. One end of the rotating rod 8 extends to the outside of the sludge treatment tank 1 and is rotatably connected to the inner top surface of the portal support plate 9.

[0019] A geared motor 19 is installed on the top surface of the portal support plate 9, and the output shaft of the geared motor 19 is coaxially and fixedly connected to the rotating rod 8.

[0020] A fixed cylinder 13 is fixedly installed in the middle of the inner top surface of the sludge treatment tank 1, and the inner wall of the fixed cylinder 13 is provided with a contour curve groove. A sliding rod 14 is horizontally fixed to the outer wall of the hollow piston rod 7. A guide groove is vertically opened on the outer wall of the air inlet cylinder 5. The outer wall of the sliding rod 14 is slidably connected to the guide groove. The end of the sliding rod 14 is slidably connected inside the contour curve groove of the fixed cylinder 13.

[0021] The one-way part includes a perforated plate 15 and a sealing ring 16 fixedly connected to the inner wall of the hollow piston rod 7. A spring rod 17 is fixedly installed in the middle of the top surface of the perforated plate 15. A sealing plate 18 that contacts the sealing ring 16 is coaxially fixedly connected to the top surface of the spring rod 17.

[0022] Several one-way air nozzles are evenly installed on the top and bottom surfaces of the mixing plate 4, and all of the one-way air nozzles are connected to the channels of the mixing plate 4.

[0023] like Figure 3 and Figure 4As shown, when the geared motor 19 is started, the geared motor 19 drives the rotating rod 8 to rotate clockwise. The rotating rod 8 drives the air inlet cylinder 5 and the hollow rod 3 to rotate synchronously. The hollow rod 3 drives the stirring plate 4 to stir the sludge. During the clockwise rotation of the air inlet cylinder 5, the sliding rod 14 will slide inside the contour curve groove of the fixed cylinder 13. Therefore, the sliding rod 14 will move up and down along the guide groove. Furthermore, the sliding rod 14 will drive the air-adding piston 6 to move up and down. When the air-adding piston 6 moves up, under the action of atmospheric pressure, the sealing plate 18 moves down and disengages from the sealing ring 16, so that external air can enter below the air-adding piston 6. When the air-adding piston 6 moves down, the air can be sprayed out from the one-way air nozzle of the stirring plate 4 through the hollow rod 3, so as to generate bubbles while stirring the sludge, making the stirring more thorough.

[0024] A dosing cylinder 10 is fixedly connected to the top surface of the partition 2. A dosing piston 11 is slidably connected to the inner wall of the dosing cylinder 10. A solid piston rod 12 is fixedly connected to the center of the top surface of the dosing piston 11. A reciprocating drive unit is movably connected to one end of the solid piston rod 12 that extends through to the outside of the sludge treatment tank 1.

[0025] The bottom surface of the sludge treatment tank 1 is fixedly equipped with several support legs. The top and bottom surfaces of the sludge treatment tank 1 are respectively fixedly equipped with a feed inlet and a discharge outlet. The bottom end of the feed inlet extends to the bottom of the partition plate 2, and a valve is installed inside the discharge outlet.

[0026] The reciprocating drive unit includes a connecting plate 20 and a driven bevel gear 21. The connecting plate 20 is hinged to the top of the solid piston rod 12 via a hinge seat. The other end of the connecting plate 20 is hinged to the side of the driven bevel gear 21. The driven bevel gear 21 meshes with a driving bevel gear 22. The driving bevel gear 22 is coaxially rotatably connected to the outer wall of the rotating rod 8. The driven bevel gear 21 is rotatably connected to the side of the portal support plate 9.

[0027] The top surface of the drive bevel gear 22 is equipped with an anti-reverse rotation part, which includes a circular groove on the top surface of the drive bevel gear 22. Several right-angled triangular blocks 23 are evenly installed on the inner wall of the circular groove. A spring plate that can engage with the right-angled side of the right-angled triangular block 23 is fixedly connected to the outer wall of the rotating rod 8.

[0028] The side of the dosing cylinder 10 is connected to an external liquid flocculant storage tank through a feed pipe, and the bottom of the dosing cylinder 10 is connected to a discharge pipe. Both the feed pipe and the discharge pipe are equipped with check valves.

[0029] like Figure 3 and Figure 5As shown, when the geared motor 19 rotates clockwise, the spring plate of the rotating rod 8 locks the right-angled triangular block 23, causing the active bevel gear 22 to rotate synchronously with the rotating rod 8. The active bevel gear 22 drives the driven bevel gear 21 to rotate, and further drives the solid piston rod 12 to reciprocate up and down through the connecting plate 20, drawing the external liquid flocculant into the dosing cylinder 10, and then inputting it into the sludge through the discharge pipe.

[0030] After the liquid flocculant is added, the geared motor 19 can be started to rotate counterclockwise. At this time, the spring plate of the rotating rod 8 will not engage with the right-angled triangular block 23. That is, the counterclockwise rotation of the rotating rod 8 only drives the air inlet cylinder 5 and the hollow rod 3 to rotate, and will not drive the active bevel gear 22 to rotate. In other words, the addition of liquid flocculant stops, but the sludge mixing continues.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A municipal sludge treatment device based on municipal environmental protection, comprising a sludge treatment tank (1), characterized in that, The upper part of the inner wall of the sludge treatment tank (1) is fixedly connected to a partition (2), and a hollow rod (3) is coaxially rotatably connected at the center of the bottom surface of the partition (2). The lower part of the hollow rod (3) is fixedly connected to a number of stirring plates (4) with internal channels, and the channels of the stirring plates (4) are connected to the hollow rod (3). The hollow rod (3) extends to the top of the partition (2) and is coaxially fixedly connected to and connected to the air inlet cylinder (5). An air filling assembly is installed inside the air inlet cylinder (5). The air filling assembly includes an air filling piston (6) that is sealed and slidably connected inside the air inlet cylinder (5). A through hole is opened on the top surface of the air filling piston (6). A hollow piston rod (7) is coaxially fixedly connected to and connected to the center of the top surface of the air filling piston (6). A one-way part is installed inside the hollow piston rod (7). A rotating rod (8) is coaxially fixedly connected to the center of the top surface of the air inlet cylinder (5). A portal support plate (9) is fixedly installed on the top surface of the sludge treatment tank (1). The rotating rod (8) extends to the outside of the sludge treatment tank (1) and is rotatably connected to the inner top surface of the portal support plate (9). A dosing cylinder (10) is fixedly connected to the top surface of the partition (2). A dosing piston (11) is slidably connected to the inner wall of the dosing cylinder (10). A solid piston rod (12) is fixedly connected to the center of the top surface of the dosing piston (11). A reciprocating drive unit is movably connected to one end of the solid piston rod (12) that extends through to the outside of the sludge treatment tank (1). The top and bottom surfaces of the stirring plate (4) are uniformly equipped with several one-way air nozzles, and the several one-way air nozzles are all connected to the channel of the stirring plate (4). A fixed cylinder (13) is fixedly installed in the middle of the inner top surface of the sludge treatment tank (1), and the inner wall of the fixed cylinder (13) is provided with a contour curve groove. The hollow piston rod (7) is horizontally fixed to the outer wall of a slide rod (14), the air inlet cylinder (5) is vertically provided with a guide groove, the outer wall of the slide rod (14) is slidably connected to the guide groove, and the end of the slide rod (14) is slidably connected to the contour curve groove of the fixed cylinder (13). The one-way part includes a perforated plate (15) and a sealing ring (16) fixedly connected to the inner wall of the hollow piston rod (7). A spring rod (17) is fixedly installed in the middle of the top surface of the perforated plate (15). A sealing plate (18) that contacts the sealing ring (16) is coaxially fixedly connected to the top surface of the spring rod (17).

2. The municipal sludge treatment device based on municipal environmental protection according to claim 1, characterized in that, The bottom surface of the sludge treatment tank (1) is fixedly equipped with several support feet. The top and bottom surfaces of the sludge treatment tank (1) are respectively fixedly equipped with a feed inlet and a discharge outlet. The bottom end of the feed inlet extends to the bottom of the partition plate (2). A valve is installed inside the discharge outlet.

3. The municipal sludge treatment device based on municipal environmental protection according to claim 1, characterized in that, A geared motor (19) is installed on the top surface of the portal support plate (9), and the output shaft of the geared motor (19) is coaxially and fixedly connected to the rotating rod (8).

4. The municipal sludge treatment device based on municipal environmental protection according to claim 1, characterized in that, The reciprocating drive unit includes a connecting plate (20) and a driven bevel gear (21). The connecting plate (20) is hinged to the top of the solid piston rod (12) via a hinge seat. The other end of the connecting plate (20) is hinged to the side of the driven bevel gear (21). The driven bevel gear (21) meshes with a driving bevel gear (22). The driving bevel gear (22) is coaxially rotatably connected to the outer wall of the rotating rod (8). The driven bevel gear (21) is rotatably connected to the side of the portal support plate (9).

5. A municipal sludge treatment device based on municipal environmental protection according to claim 4, characterized in that, The top surface of the active bevel gear (22) is equipped with an anti-reverse part, which includes a circular groove on the top surface of the active bevel gear (22). Several right-angled triangular blocks (23) are evenly installed on the inner wall of the circular groove. A spring plate that can engage with the right-angled side of the right-angled triangular block (23) is fixedly connected to the outer wall of the rotating rod (8).

6. A municipal sludge treatment device based on municipal environmental protection according to claim 1, characterized in that, The side of the dosing cylinder (10) is connected to an external liquid flocculant storage tank through a feed pipe. The bottom of the dosing cylinder (10) is connected to a discharge pipe, and both the feed pipe and the discharge pipe are equipped with one-way valves.

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