A comprehensive utilization device for sludge incineration

Abstract

This utility model relates to the field of sludge incineration and recycling technology, specifically a comprehensive sludge incineration and recycling device. It includes an insulated tank with gas guide pipes at both ends and a drain pipe at the bottom, with a valve on the drain pipe. A sealed box is located at the top of the insulated tank, and a heat-conducting plate is installed inside the sealed box. A recovery pipe is installed within the heat-conducting plate, extending to both sides of the sealed box. A filter layer is installed inside the insulated tank, and a heat-conducting pipe is installed between the heat-conducting plate and the filter layer. This utility model integrates insulation, filtration, heat recovery, self-cleaning, and wastewater discharge functions, solving the problems of fragmented functions, difficult filter layer cleaning, and low heat recovery efficiency in existing technologies. It achieves integrated flue gas treatment, improves energy utilization, reduces maintenance costs, and ensures operational stability.

Description

Technical Field

[0001] This utility model relates to the field of sludge incineration and recycling technology, specifically to a sludge incineration and comprehensive utilization device. Background Technology

[0002] As is well known, in the sludge incineration process, the high-temperature flue gas generated must undergo filtration and heat recovery before entering subsequent processes. However, existing flue gas treatment devices have the following shortcomings: The high-temperature flue gas generated by sludge incineration carries a large amount of heat energy, but existing devices lack effective heat recovery structures or have unreasonable layouts of heat conduction components, resulting in most of the heat being directly emitted with the flue gas, making it impossible to achieve secondary energy utilization and increasing the energy consumption of the overall treatment system.

[0003] High-temperature flue gas contains a large amount of dust, particles, and other impurities. Existing filtration structures (such as filter screens) are easily clogged by these impurities after long-term use, leading to a decrease in flue gas flow efficiency. Traditional cleaning methods mostly rely on manual disassembly and cleaning, which is cumbersome, time-consuming, and labor-intensive, and carries high maintenance risks in high-temperature environments. Although some technologies have been developed to address the ash removal problem, such as the "built-in ash removal structure for a sludge incineration waste heat preheating pipe" disclosed in patent CN220750134U, which uses a turbine inside a horizontal pipe to drive a rotating rod to scrape off ash from the inner wall of the pipe, collects the ash with an ash collection cylinder, and uses ribbons and small balls inside the pipe section to assist in cleaning, achieving real-time cleaning of ash inside the preheating pipe and reducing the difficulty of pipe ash removal. However, this technology only addresses the ash removal of the inner wall of the waste heat preheating pipe and does not involve the filtration and separation of impurities in the flue gas. Furthermore, the ash removal method is limited to mechanical scraping of the inner wall of the pipe and cannot meet the cleaning needs of filter screens and other filter components. At the same time, it lacks a systematic sewage discharge design for the impurities after cleaning, making it difficult to completely solve the problem of increased flow resistance caused by impurity accumulation.

[0004] To address the aforementioned problems, this utility model aims to provide a comprehensive treatment device that integrates heat preservation, filtration, heat recovery, and self-cleaning functions, thereby solving the problems of energy waste, filter clogging, maintenance difficulties, and fragmented functions in the prior art. Utility Model Content

[0005] (a) Technical problems to be solved In view of the shortcomings of existing sludge incineration flue gas treatment devices, such as low heat recovery efficiency, easy clogging and difficult cleaning of filter layers, and fragmented functions, this utility model provides a sludge incineration comprehensive utilization device that integrates heat preservation, filtration, heat recovery and self-cleaning functions.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a sludge incineration comprehensive utilization device, comprising an insulated tank, gas guide pipes at both ends of the insulated tank, a sewage discharge pipe at the bottom of the insulated tank, a valve on the sewage discharge pipe, a sealed box at the top of the insulated tank, a heat-conducting plate inside the sealed box, a recovery pipe in the heat-conducting plate, the recovery pipe extending to both sides of the sealed box, a filter screen layer inside the insulated tank, a heat-conducting pipe between the heat-conducting plate and the filter screen layer, a flushing mechanism and a cleaning mechanism between the sealed box and the interior of the insulated tank, the cleaning mechanism comprising an mounting plate and a sealing plate, both the mounting plate and the sealing plate being mounted at the top of the sealed box, the sealing plate extending into the insulated tank, a cleaning shaft on one side of the sealing plate, the cleaning shaft being located in the insulated tank and having a cleaning brush corresponding to the filter screen layer, a drive motor at the top of the mounting plate, the output end of the drive motor and one end of the cleaning shaft both extending into the interior of the sealing plate and having bushings, a belt between the two bushings.

[0007] Furthermore, the rinsing mechanism includes a water pump and a nozzle. The water pump is installed at the top of the sealed box, with an inlet pipe at the top and an outlet pipe at the bottom. The outlet pipe extends into the sealed box. The nozzle is installed at the top of the inner wall of the insulated tank and connected to the outlet pipe. The nozzle is inclined toward the filter layer.

[0008] Furthermore, the cleaning brushes are provided in multiple and arranged in a circular array.

[0009] Furthermore, flanges are provided on the air guide pipe, the sewage pipe, and the recovery pipe.

[0010] Furthermore, the heat pipes are provided in multiples and arranged in an array.

[0011] Furthermore, the heat pipe is made of copper.

[0012] Furthermore, a heat insulation plate is provided between the top of the sealed box and the water pump.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a sludge incineration and comprehensive utilization device, which has the following beneficial effects: This sludge incineration and comprehensive utilization device effectively conducts and removes heat from the high-temperature flue gas of sludge incineration by connecting the filter layer to the heat-conducting plate in the sealed box through a heat-conducting pipe installed in the insulated tank, and in conjunction with the recovery pipe in the heat-conducting plate, thus realizing the secondary utilization of energy. At the same time, the heat-conducting pipe connected to the filter layer allows the filtered pure high-temperature flue gas to flow slowly through the heat-conducting pipe, increasing the heat exchange time, greatly improving the heat recovery and utilization rate, and reducing energy waste.

[0014] The cleaning mechanism drives the cleaning shaft to rotate via a drive motor, belt, and bushing, causing the cleaning brush to mechanically scrub the filter layer. Combined with the rinsing mechanism, it can further remove residual impurities, forming a combined cleaning mode of mechanical scrubbing and rinsing. This effectively avoids clogging of the filter layer and extends the cleaning cycle. It eliminates the need for frequent manual disassembly and cleaning, reducing maintenance costs and operational risks, and ensuring continuous and stable operation of the device. Attached Figure Description

[0015] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view structure of the present invention; Figure 3 This is a front half-sectional view of the structure of this utility model; Figure 4 This is a left half-sectional view of the structure of this utility model.

[0016] In the diagram: 1. Insulation tank; 2. Air duct; 3. Drain pipe; 4. Valve; 5. Sealing box; 6. Heat-conducting plate; 7. Recovery pipe; 8. Filter layer; 9. Heat-conducting pipe; 10. Mounting plate; 11. Sealing plate; 12. Cleaning brush; 13. Drive motor; 14. Bushing; 15. Belt; 16. Water pump; 17. Nozzle; 18. Inlet pipe; 19. Outlet pipe; 20. Flange; 21. Heat insulation plate; 22. Cleaning shaft. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4This utility model relates to a comprehensive utilization device for sludge incineration, comprising an insulated tank 1, with air guide pipes 2 at both ends of the insulated tank 1, a sewage discharge pipe 3 at the bottom of the insulated tank 1, a valve 4 on the sewage discharge pipe 3, a sealed box 5 at the top of the insulated tank 1, a heat-conducting plate 6 inside the sealed box 5, a recovery pipe 7 in the heat-conducting plate 6 extending to both sides of the sealed box 5, a filter screen layer 8 inside the insulated tank 1, a heat-conducting pipe 9 between the heat-conducting plate 6 and the filter screen layer 8, and a flushing mechanism and a cleaning mechanism between the sealed box 5 and the interior of the insulated tank 1. The cleaning mechanism includes a mounting plate 10 and a sealing plate 11, both of which are mounted on the top of the sealed box 5. Extending into the heat preservation tank 1, a cleaning shaft 22 is provided on one side of the sealing plate 11. The cleaning shaft 22 is located in the heat preservation tank 1 and a cleaning brush 12 is provided at the corresponding filter layer 8. A drive motor 13 is provided at the top of the mounting plate 10. The output end of the drive motor 13 and one end of the cleaning shaft 22 both extend into the interior of the sealing plate 11 and are provided with bushings 14. A belt 15 is provided between the two bushings 14. In this embodiment, the exhaust pipe of the incinerator for sludge incineration is connected through the gas guide pipe 2. The high-temperature gas generated by sludge incineration enters the tank through the gas guide pipe 2 at one end of the heat preservation tank 1. The heat preservation tank 1 maintains the temperature of the high-temperature flue gas to reduce heat loss. When the high-temperature flue gas flows through the filter layer 8, impurities are filtered and intercepted. The pure high-temperature flue gas continues to flow to the other end and is discharged to the next flue gas treatment process. During the flow of high-temperature flue gas inside the tank, heat is transferred through the heat pipe 9 to the heat-conducting plate 6 inside the sealed box 5. The heat is then discharged by the recovery pipe 7 in the heat-conducting plate 6 and used to preheat other high-temperature flue gas or for heating, achieving secondary energy utilization. The filter layer 8 experiences a decrease in filtration efficiency due to impurity accumulation. Personnel periodically activate the drive motor 13 in the cleaning mechanism, which drives the cleaning shaft 22 to rotate via the bushing 14 and belt 15. The cleaning brush 12 on the cleaning shaft 22 mechanically scrubs the filter layer 8. Then, the rinsing mechanism rinses the filter layer 8 to further remove residual impurities. Impurities generated during cleaning and dirt deposited inside the tank can be discharged through the drain pipe 3 by opening the valve 4 on the drain pipe 3 at the bottom of the insulated tank 1. During discharge, the rotation of the cleaning shaft 22 flushes the accumulated impurities through the filter layer 8 and discharges them with the wastewater, preventing blockage. The entire process is sealed by the sealed box 5, ensuring internal sealing, reducing heat loss and high-temperature flue gas leakage, and achieving integrated utilization of insulation, filtration, heat recovery, and self-cleaning.

[0019] To ensure effective rinsing of the filter layer 8, the rinsing mechanism in this design includes a water pump 16 and a nozzle 17. The water pump 16 is installed at the top of the sealed box 5, with an inlet pipe 18 at its top and an outlet pipe 19 at its bottom, extending into the sealed box 5. The nozzle 17 is installed at the top of the inner wall of the insulation tank 1 and connected to the outlet pipe 19. The nozzle 17 is angled towards the filter layer 8. The water pump 16 draws in rinsing liquid, such as water or detergent, through the inlet pipe 18, and delivers it to the nozzle 17 at the top of the inner wall of the insulation tank 1 via the outlet pipe 19. The nozzle 17 is angled towards the filter layer 8, spraying the rinsing liquid in a directional manner. This, combined with the mechanical cleaning of the cleaning mechanism, forms a composite cleaning mode of mechanical brushing and liquid rinsing, enhancing the cleaning effect on the filter layer 8.

[0020] To improve cleaning efficiency, in this solution, multiple cleaning brushes 12 are arranged in a circular array. The multiple cleaning brushes 12 distributed in a circular array increase the contact area between the cleaning brushes 12 and the filter layer 8, thereby improving cleaning efficiency.

[0021] To facilitate external piping connections, flanges 20 are provided on the air guide pipe 2, the sewage pipe 3, and the recovery pipe 7 in this design. These flanges 20 allow for detachable and secure connections between the pipes and external equipment. The flange 20 connections facilitate equipment installation, disassembly, and maintenance, reducing the difficulty of repair.

[0022] To improve thermal conductivity, this design employs multiple heat pipes 9 arranged in an array. The heat pipes 9 are made of copper. The array arrangement of multiple heat pipes 9 increases the contact area between the heat pipes 9 and the high-temperature flue gas inside the insulation tank 1, as well as the heat-conducting plate 6. This expands the heat exchange area, improves heat transfer efficiency, and enhances heat recovery. The array arrangement also ensures more uniform heat transfer, preventing localized overheating or uneven heat transfer. The high thermal conductivity of copper enhances heat transfer capabilities. This further improves thermal conductivity, accelerates heat transfer from the high-temperature flue gas inside the insulation tank 1 to the heat-conducting plate 6 and the recovery pipe 7, and optimizes heat recovery.

[0023] In order to prevent the water pump 16 from being affected by high temperature, in this solution, a heat insulation plate 21 is provided between the top of the sealing box 5 and the water pump 16. The heat insulation plate 21 blocks the heat in the sealing box 5 from being transferred to the water pump 16, thereby preventing the water pump 16 from being damaged due to long-term contact with high temperature and extending the service life of the water pump 16.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge incineration and comprehensive utilization device, comprising an insulated tank (1), wherein both ends of the insulated tank (1) are provided with air guide pipes (2), characterized in that, The bottom of the heat preservation tank (1) is provided with a drain pipe (3), and a valve (4) is provided on the drain pipe (3). The top of the heat preservation tank (1) is provided with a sealing box (5). The inside of the sealing box (5) is provided with a heat-conducting plate (6), and a recovery pipe (7) is provided in the heat-conducting plate (6). The recovery pipe (7) extends to both sides of the sealing box (5). The inside of the heat preservation tank (1) is provided with a filter screen layer (8). A heat-conducting pipe (9) is provided between the heat-conducting plate (6) and the filter screen layer (8). A flushing mechanism and a cleaning mechanism are provided between the sealing box (5) and the inside of the heat preservation tank (1). The cleaning mechanism includes a mounting plate (10) and a sealing plate. Plate (11), mounting plate (10) and sealing plate (11) are all installed at the top of the sealing box (5). The sealing plate (11) extends into the heat preservation tank (1). A cleaning shaft (22) is provided on one side of the sealing plate (11). The cleaning shaft (22) is located in the heat preservation tank (1) and a cleaning brush (12) is provided at the corresponding filter layer (8). A drive motor (13) is provided at the top of the mounting plate (10). The output end of the drive motor (13) and one end of the cleaning shaft (22) extend into the interior of the sealing plate (11) and are provided with bushings (14). A belt (15) is provided between the two bushings (14).

2. The sludge incineration and comprehensive utilization device according to claim 1, characterized in that, The rinsing mechanism includes a water pump (16) and a nozzle (17). The water pump (16) is installed at the top of the sealed box (5). The top of the water pump (16) is provided with an inlet pipe (18), and the bottom of the water pump (16) is provided with an outlet pipe (19). The outlet pipe (19) extends into the sealed box (5). The nozzle (17) is installed at the top of the inner wall of the heat preservation tank (1) and is connected to the outlet pipe (19). The nozzle (17) is inclined towards the filter layer (8).

3. The sludge incineration and comprehensive utilization device according to claim 1, characterized in that, The cleaning brush (12) is provided in multiple and arranged in a circular array.

4. The sludge incineration and comprehensive utilization device according to claim 1, characterized in that, Flanges (20) are provided on the air guide pipe (2), the sewage pipe (3) and the recovery pipe (7).

5. The sludge incineration and comprehensive utilization device according to claim 1, characterized in that, The heat pipes (9) are provided in multiple and arranged in an array.

6. The sludge incineration and comprehensive utilization device according to claim 5, characterized in that, The heat pipe (9) is made of copper.

7. A sludge incineration and comprehensive utilization device according to claim 2, characterized in that, A heat insulation plate (21) is provided between the top of the sealed box (5) and the water pump (16).

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