Sludge fermentation tank

Abstract

This utility model belongs to the field of sludge fermentation technology, specifically disclosing a sludge fermentation tank, including a tank body. A feed pipe is connected to the top of the tank body, and a cleaning component is provided inside the tank body. The cleaning component includes two connecting plates, each with a T-slot inside. Two scrapers are provided on opposite sides of each connecting plate, and T-blocks are fixedly connected to opposite sides of each scraper. The two T-blocks are matched with their corresponding T-slots, and limiting plates are fixedly connected to the bottom of each scraper, located below the corresponding scraper. A hopper is threadedly connected to the bottom of the tank body, and a feed pipe is connected to the bottom of the hopper. Through the cleaning component, the scrapers continuously rotate with the stirring rod, effectively scraping away sludge from the inner wall of the tank in real time, preventing the sludge from solidifying into stubborn dirt and avoiding affecting fermentation efficiency and the service life of the tank.

Description

Technical Field

[0001] This application relates to the field of sludge fermentation technology, and more specifically, to a sludge fermentation tank. Background Technology

[0002] A sludge fermentation tank is a specialized piece of equipment that uses the aerobic or anaerobic metabolism of microorganisms to degrade and transform organic pollutants in sludge, achieving sludge reduction, harmlessness, and resource recovery. In industries such as municipal wastewater treatment, food processing, and aquaculture, large quantities of organic sludge are generated, rich in pathogens, heavy metals, and recalcitrant organic matter. Direct discharge or landfilling of this sludge can cause serious environmental pollution. However, sludge fermentation tanks, with their highly efficient biological treatment capabilities, can not only kill harmful microorganisms in the sludge but also transform it into products that can be used as agricultural fertilizers, soil conditioners, or energy feedstocks, playing a crucial role in environmental protection and resource recycling.

[0003] However, during the actual operation of sludge fermentation tanks, due to the high viscosity of the sludge itself, some of it adheres to the inner wall of the tank after entering. As the fermentation process continues, the residual sludge accumulates, forming a thick layer of fouling that hinders heat transfer and material mixing within the tank, leading to a decrease in fermentation efficiency. Furthermore, the adhered sludge gradually solidifies in the long-term fermentation environment, forming stubborn scale that is difficult to remove using conventional stirring devices, increasing the difficulty of equipment cleaning and maintenance costs. Utility Model Content

[0004] To address the aforementioned problems, this application provides a sludge fermentation tank.

[0005] The sludge fermentation tank provided in this application adopts the following technical solution:

[0006] A sludge fermentation tank includes a tank body, a feed pipe connected to the top of the tank body, and a cleaning component inside the tank body.

[0007] The cleaning component includes two connecting plates. Each connecting plate has a T-slot inside. Each connecting plate has two scrapers on opposite sides. Each scraper has a T-block fixedly connected to opposite sides. Each T-block matches its corresponding T-slot. Each T-block has a limit plate fixedly connected to its bottom end. The limit plates are located below the corresponding scrapers.

[0008] The bottom of the tank is connected to a hopper via a thread, and the bottom of the hopper is connected to a discharge pipe.

[0009] With the above technical solution, the scraper in the cleaning component will rotate continuously with the stirring rod, which can scrape off the sludge on the inner wall of the tank in real time, prevent the sludge from solidifying into stubborn dirt, and avoid affecting the fermentation efficiency and service life of the tank.

[0010] Furthermore, a motor is installed at the top of the tank, and a stirring rod is fixedly connected to the output end of the motor. The stirring rod is located inside the tank.

[0011] Furthermore, both ends of the stirring rod are fixedly connected to fixing plates, and the two fixing plates are respectively fixedly connected to the two ends of the corresponding connecting plates.

[0012] Furthermore, two limiting rods are fixedly connected to the top of one of the fixing plates.

[0013] Furthermore, a groove is provided on the inner wall of the top of the tank, and both limiting rods are slidably connected to the groove.

[0014] Through the above technical solution, the annular shape of the chute limits the movement trajectory of the limiting rod, forcing the stirring rod to rotate only around the axis, suppressing radial offset and shaking, and increasing stability.

[0015] Furthermore, a heating layer is fitted on the outer wall of the feed pipe, and an electric heating wire is installed inside the heating layer.

[0016] The above technical solution maintains the sludge temperature within a suitable range through heating, effectively reducing the sludge's viscosity and adhesion, ensuring good fluidity of the sludge within the feed pipe, reducing sludge residue and accumulation on the pipe wall, and lowering the risk of pipe blockage.

[0017] Furthermore, a temperature sensor is provided at one end of the heating layer, and a control panel is provided at the outer end of the tank body. The control panel is electrically connected to the temperature sensor, the heating layer, and the motor.

[0018] Furthermore, multiple support legs are fixedly connected to the outer end of the hopper.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] (1) By setting the cleaning component, the scraper will rotate continuously with the stirring rod, which can scrape off the sludge on the inner wall of the tank in real time, prevent the sludge from solidifying into stubborn dirt, and avoid affecting the fermentation efficiency and service life of the tank.

[0021] (2) This utility model maintains the temperature of sludge within a suitable range by heating, effectively reducing the viscosity and adhesion of sludge, allowing sludge to maintain good fluidity in the feed pipe, reducing sludge residue and accumulation on the pipe wall, and reducing the risk of pipe blockage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the tank of this utility model;

[0024] Figure 3 This is a cross-sectional view of the present invention;

[0025] Figure 4 This is a schematic diagram of the connection structure between the motor and the stirring rod of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection structure between the T-block and the T-slot of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Tank body; 2. Feed pipe; 3. Hopper; 4. Feed pipe; 5. Support leg; 6. Control panel; 7. Heating layer; 8. Motor; 9. Stirring rod; 10. Scraper; 11. Slide groove; 12. Connecting plate; 13. Fixing plate; 14. Limiting rod; 15. Limiting plate; 16. T-block; 17. T-slot. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Reference Figures 1-5 A sludge fermentation tank includes a tank body 1, with a feed pipe 2 connected to the top of the tank body 1, and a cleaning component inside the tank body 1.

[0030] The cleaning assembly includes two connecting plates 12. Each connecting plate 12 has a T-slot 17 inside. Each connecting plate 12 has two scrapers 10 on opposite sides. Each scraper 10 has a T-block 16 fixedly connected to opposite sides. Each T-block 16 matches the corresponding T-slot 17. Each connecting plate 12 has a limit plate 15 fixedly connected to its bottom end. The limit plates 15 are located below the corresponding scrapers 10.

[0031] The bottom of the tank body 1 is connected to a hopper 3 by a thread, and the bottom of the hopper 3 is connected to a discharge pipe 4.

[0032] Sludge enters tank 1 through feed pipe 2. Due to its stickiness, the sludge easily adheres to the inner wall of tank 1. At this time, motor 8 starts, driving stirring rod 9 to rotate. Stirring rod 9 drives two connecting plates 12 to rotate synchronously through fixing plate 13. Scrapers 10 on connecting plates 12 rotate around the inner wall of tank 1, thereby continuously and effectively scraping off the sludge adhering to the inner wall of tank 1. After the sludge has completed fermentation, the treated sludge is discharged through the feed hopper 3 connected by threads at the bottom and the valve on the feed pipe 4 is opened.

[0033] When the scraper 10 wears out due to long-term friction and needs to be replaced, slide the T-shaped block 16 of the scraper 10 upward from the T-shaped groove 17 of the connecting plate 12, and install the new scraper 10 into the connecting plate 12. Because of the presence of the limiting plate 15, when the scraper 10 moves and comes into contact with the limiting plate 15, the limiting plate 15 limits the scraper 10 and prevents the scraper 10 from falling off due to gravity.

[0034] By setting up the cleaning components, the scraper 10 will rotate continuously with the stirring rod 9, which can scrape off the sludge on the inner wall of the tank 1 in real time, preventing the sludge from solidifying into stubborn dirt and avoiding affecting the fermentation efficiency and service life of the tank 1.

[0035] Reference Figures 3-5 A motor 8 is provided on the top of the tank body 1. A stirring rod 9 is fixedly connected to the output end of the motor 8. The stirring rod 9 is located inside the tank body 1. Both ends of the stirring rod 9 are fixedly connected to a fixing plate 13. The two fixing plates 13 are respectively fixedly connected to the two ends of the corresponding connecting plate 12.

[0036] The output shaft of the motor 8 is directly connected to the stirring rod 9. The fixing plates 13 at both ends of the stirring rod 9 rotate together. The fixing plates 13 are rigidly connected to the connecting plate 12, which in turn drives the scraper 10 to make a circular motion around the inner wall of the tank 1. During the rotation, the stirring rod 9 mechanically stirs the sludge in the tank, promotes full contact between microorganisms and organic matter, and accelerates the fermentation reaction.

[0037] Reference Figures 1-3 Two limiting rods 14 are fixedly connected to the top of one of the fixed plates 13. A groove 11 is provided on the inner wall of the top of the tank body 1. Both limiting rods 14 are slidably connected to the groove 11.

[0038] When the motor 8 drives the stirring rod 9 to rotate, the fixed plate 13 rotates accordingly, causing the top limiting rod 14 to slide circumferentially within the groove 11 on the inner wall of the top of the tank 1.

[0039] The annular shape of the chute 11 defines the movement trajectory of the limit rod 14, forcing the stirring rod 9 to rotate only around the axis, suppressing radial offset and shaking, and increasing stability.

[0040] Reference Figures 1-2 The outer wall of the feed pipe 2 is fitted with a heating layer 7, and an electric heating wire is installed inside the heating layer 7. A temperature sensor is installed at one end of the heating layer 7. A control panel 6 is installed at the outer end of the tank body 1. The control panel 6 is electrically connected to the temperature sensor, the heating layer 7 and the motor 8. Multiple support legs 5 are fixedly connected to the outer end of the hopper 3.

[0041] When sludge is conveyed to tank 1 through feed pipe 2, the electric heating wire in heating layer 7 starts working to heat feed pipe 2, thereby increasing the temperature of the sludge inside the pipe. A temperature sensor installed at one end of heating layer 7 monitors the temperature of feed pipe 2 in real time and transmits the data to control panel 6. Control panel 6 analyzes the received temperature data and compares it with preset temperature parameters. If the actual temperature is lower than the set value, control panel 6 automatically increases the power of the electric heating wire to increase the heat generation; if the actual temperature is higher than the set value, it decreases the power of the electric heating wire, thereby achieving precise control of the temperature of feed pipe 2. At the same time, control panel 6 can also control the start / stop and speed of motor 8 to adjust the stirring intensity of stirring rod 9.

[0042] By heating the sludge to maintain its temperature within a suitable range, the viscosity and adhesion of the sludge are effectively reduced, allowing the sludge to maintain good fluidity within the feed pipe 2, reducing sludge residue and accumulation on the pipe wall, and lowering the risk of pipe blockage.

[0043] Working principle: When the sludge fermentation tank is running, the sludge to be treated is first transported to the tank 1 through the feed pipe 2. During this process, the heating layer 7 on the outer wall of the feed pipe 2 plays a role. The electric heating wire inside heats the feed pipe 2. At the same time, the temperature sensor monitors the temperature in real time and transmits the data to the control panel 6. The control panel 6 automatically adjusts the power of the electric heating wire by comparing the actual temperature with the preset value to ensure that the sludge enters the tank 1 at a suitable temperature, reduce the viscosity of the sludge, and reduce the residue and accumulation on the pipe wall.

[0044] After the sludge enters the tank 1, the motor 8 starts, and its output shaft drives the stirring rod 9 to rotate. The fixing plates 13 at both ends of the stirring rod 9 rotate accordingly, which in turn drives the connecting plate 12 connected to the fixing plate 13 to rotate. The scraper 10 on the connecting plate 12 slides in contact with the T-slot 17 of the connecting plate 12 through the T-block 16. Driven by the connecting plate 12, it makes a circular motion around the inner wall of the tank 1, continuously scraping off the sludge adhering to the inner wall of the tank 1. At the same time, the limiting rod 14 at the top of the fixing plate 13 slides in the groove 11 on the inner wall of the top of the tank 1. The annular structure of the groove 11 restricts the movement trajectory of the limiting rod 14, ensuring that the stirring rod 9 rotates stably around the axis and suppressing radial offset and shaking.

[0045] During the rotation of the stirring rod 9, it mechanically stirs the sludge in the tank, promoting full contact between microorganisms and organic matter and accelerating the fermentation reaction.

[0046] When scraper 10 needs to be replaced due to wear and tear from long-term use, the T-shaped block 16 of scraper 10 can be slid upward from the T-shaped groove 17 of connecting plate 12. When installing a new scraper 10, the limiting plate 15 limits scraper 10 to prevent it from falling off due to gravity. After the sludge fermentation is completed, the valve of the discharge pipe 4 is opened, and the treated sludge is discharged through the discharge hopper 3, which is threaded to the bottom of the tank 1, thus completing the entire sludge fermentation process.

[0047] 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 sludge fermentation tank, characterized in that, include: The tank (1) has a feed pipe (2) connected to its top and a cleaning assembly inside. The cleaning assembly includes a connecting plate (12), and the number of the connecting plates (12) is set to two. The interior of each of the two connecting plates (12) is provided with a T-shaped groove (17). Each of the two connecting plates (12) has two scrapers (10) on opposite sides. Each of the two scrapers (10) is fixedly connected to a T-shaped block (16) on opposite sides. Each of the two T-shaped blocks (16) matches the corresponding T-shaped groove (17). Each of the two (12) has a limiting plate (15) fixedly connected to its bottom end. The two limiting plates (15) are located below the corresponding scrapers (10). The bottom of the tank (1) is connected to a hopper (3) by a thread, and the bottom of the hopper (3) is connected to a discharge pipe (4).

2. The sludge fermentation tank according to claim 1, characterized in that: The top of the tank (1) is equipped with a motor (8), and the output end of the motor (8) is fixedly connected to a stirring rod (9), which is located inside the tank (1).

3. A sludge fermentation tank according to claim 2, characterized in that: Both ends of the stirring rod (9) are fixedly connected to fixing plates (13), and the two fixing plates (13) are respectively fixedly connected to the two ends of the corresponding connecting plates (12).

4. A sludge fermentation tank according to claim 3, characterized in that: Two limiting rods (14) are fixedly connected to the top of one of the fixed plates (13).

5. A sludge fermentation tank according to claim 4, characterized in that: The inner wall of the top of the tank (1) is provided with a sliding groove (11), and the two limiting rods (14) are slidably connected to the sliding groove (11).

6. A sludge fermentation tank according to claim 1, characterized in that: The outer wall of the feed pipe (2) is fitted with a heating layer (7), and an electric heating wire is provided inside the heating layer (7).

7. A sludge fermentation tank according to claim 6, characterized in that: A temperature sensor is provided at one end of the heating layer (7), and a control panel (6) is provided at the outer end of the tank body (1). The control panel (6) is electrically connected to the temperature sensor, the heating layer (7), and the motor (8).

8. A sludge fermentation tank according to claim 1, characterized in that: The outer end of the hopper (3) is fixedly connected to multiple support legs (5).

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