A waste heat recovery treatment device for sludge to prepare ceramsite.

Abstract

This utility model discloses a waste heat recovery and treatment device for sludge preparation of ceramsite, relating to the field of sludge recycling technology. The device includes a base with a pedestal on top. A granulator is fixedly mounted on the pedestal, and the granulator has a discharge trough at its output end. It also includes a recovery mechanism positioned above the discharge trough, used to absorb hot air from the granulator's discharge end. The recovery mechanism includes a suction fan, with its inlet connected to a connecting pipe. A gas collection hood is fixedly connected to the end of the connecting pipe away from the suction fan, and the hood is located above the discharge trough. An outlet pipe is fixedly connected to the outlet end of the suction fan, extending to a drying chamber for drying sludge. This waste heat recovery and treatment device facilitates the recovery and utilization of heat during the granulation process of sludge into ceramsite, improving energy efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sludge recycling technology, specifically a waste heat recovery treatment device for sludge preparation of ceramsite. Background Technology

[0002] With the acceleration of urbanization and the continuous development of industrial production, the amount of sludge produced is increasing day by day. Sludge contains a large amount of organic matter, heavy metals and pathogens and other harmful substances. If it is not properly treated, it will cause serious pollution to the environment. Among the many sludge treatment technologies, preparing sludge into ceramsite is a highly promising method. Using sludge to prepare ceramsite can not only achieve the reduction, harmlessness and resource utilization of sludge, but also produce ceramsite products with economic value, which has good environmental and economic benefits.

[0003] The process of preparing ceramsite from sludge typically includes key steps such as raw material pretreatment, batching and mixing, granulation, and calcination. In the granulation stage, the granulator plays a crucial role. Through specific mechanical action, the granulator transforms the pretreated and mixed sludge raw material into granules with a certain particle size and strength, i.e., ceramsite green bodies. During this process, suitable temperature and humidity conditions must be maintained inside the granulator to ensure the molding quality of the ceramsite green bodies.

[0004] In the existing process of producing ceramsite from sludge, a large amount of heat is generated inside the granulator due to factors such as mechanical friction, material extrusion, and the chemical reaction of the raw materials themselves. This heat is discharged from the discharge end along with the ceramsite blanks and is directly dissipated into the surrounding environment. This heat loss results in a serious waste of energy.

[0005] Therefore, in order to address the above problems, the applicant needs to design a waste heat recovery treatment device for sludge preparation of ceramsite to solve the problem. Utility Model Content

[0006] The purpose of this invention is to provide a waste heat recovery treatment device for sludge preparation of ceramsite, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery treatment device for sludge to ceramsite preparation, comprising a base, and a pedestal is provided above the base. A granulator is fixedly installed above the pedestal, and a discharge chute is provided at the output end of the granulator.

[0008] It also includes: a recovery mechanism disposed above the discharge trough, the recovery mechanism being used to absorb hot air from the discharge end of the granulator, the recovery mechanism including a suction fan, the air inlet end of the suction fan being fixedly connected to a connecting pipe, the end of the connecting pipe away from the suction fan being fixedly connected to a gas collection hood, the gas collection hood being located above the discharge trough, the air outlet end of the suction fan being fixedly connected to an air outlet pipe, and the air outlet end of the air outlet pipe extending to a drying chamber for drying sludge.

[0009] Furthermore, an extension shell is integrally provided on the gas collection hood, and an installation frame is detachably installed on the inner side of the extension shell, and a filter screen is fixedly installed on the inner side of the installation frame.

[0010] Furthermore, the mounting frame is provided with a limiting hole, and a threaded rod is provided in the limiting hole; the gas collecting hood is provided with a threaded hole, and the threaded hole is threadedly connected to the threaded rod.

[0011] Furthermore, a limit cap is fixedly provided on the threaded rod, and the outer diameter of the limit cap is larger than the inner diameter of the limit hole.

[0012] Furthermore, a support plate is fixedly installed below the suction fan, and a support leg is fixedly installed below the support plate, with the support leg being fixedly connected to the base.

[0013] Furthermore, a support rod is fixedly installed on the gas collection hood, and the end of the support rod away from the gas collection hood is fixedly connected to the base.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the waste heat recovery treatment device for sludge to ceramsite production facilitates the recovery and utilization of heat when sludge is manufactured into ceramsite using a granulator, thereby improving energy efficiency. The specific details are as follows:

[0015] When the waste heat recovery and treatment device for sludge ceramsite preparation is in use, after the granulator completes granulation and discharges the high-temperature ceramsite blanks through the discharge chute, the suction fan in the recovery mechanism is activated. The suction fan generates negative pressure at its air inlet end, drawing in air from the gas collection hood area above the discharge chute through the connecting pipe. The drawn-in hot airflow first passes through the filter screen on the detachable mounting frame inside the gas collection hood extension shell, where dust and larger particulate impurities are intercepted and filtered. After being pressurized by the suction fan, the filtered and purified hot airflow is forcibly transported from its outlet end through the outlet pipe to the drying chamber for drying wet sludge. The hot air transported to the drying chamber has a high temperature and can be directly used as a heat source for preheating or evaporating moisture in the drying process, replacing or reducing the heat that would otherwise require additional energy consumption. This achieves effective recovery and recycling of waste heat from the granulation process, reducing the overall energy consumption of the system. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the recycling mechanism of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the gas collection hood of this utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the split structure.

[0020] In the diagram: 1. Base; 2. Recycling mechanism; 10. Base; 11. Granulator; 12. Discharge chute; 20. Fan; 21. Exhaust pipe; 22. Connecting pipe; 23. Gas collection hood; 24. Support rod; 25. Support plate; 26. Support leg; 230. Extension shell; 231. Mounting frame; 232. Filter screen; 233. Threaded hole; 234. Limiting hole; 235. Threaded rod; 236. Limiting cap. Detailed Implementation

[0021] 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.

[0022] like Figures 1-4 As shown, the present invention discloses a waste heat recovery treatment device for sludge preparation of ceramsite, including a base 1, a base 10 above the base 1, a granulator 11 fixedly mounted above the base 10, and a discharge trough 12 at the output end of the granulator 11. It also includes a recovery mechanism 2 mounted above the discharge trough 12, which is used to absorb the hot air from the discharge end of the granulator 11. The recovery mechanism 2 includes a suction fan 20, and the air inlet end of the suction fan 20 is fixedly connected to a connecting pipe 22. The end of the connecting pipe 22 away from the suction fan 20 is fixedly connected to a gas collecting hood 23, which is located above the discharge trough 12. The air outlet end of the suction fan 20 is fixedly connected to an air outlet pipe 21, and the air outlet end of the air outlet pipe 21 extends into a drying chamber for drying sludge.

[0023] An extension shell 230 is integrally provided on the gas collection hood 23. An installation frame 231 is detachably installed on the inner side of the extension shell 230, and a filter screen 232 is fixedly installed on the inner side of the installation frame 231. By setting a detachable installation frame 231 and filter screen 232 in the extension shell 230 of the gas collection hood 23, dust and impurity particles carried in the hot air can be effectively intercepted. This not only protects the suction fan 20 and the pipeline system from blockage or wear, but also ensures the cleanliness of the hot air delivered to the drying chamber and avoids impurities from contaminating the sludge to be dried.

[0024] The mounting frame 231 is provided with a limiting hole 234, and a threaded rod 235 is provided in the limiting hole 234. The gas collecting hood 23 is provided with a threaded hole 233, and the threaded hole 233 is threadedly connected to the threaded rod 235. By adopting the matching structure of the threaded rod 235 and the threaded hole 233 on the gas collecting hood 23, the mounting frame 231 can be quickly disassembled and assembled. The operation is simple and stable, which greatly improves the maintenance efficiency of the device and reduces downtime.

[0025] A limit cap 236 is fixedly installed on the threaded rod 235, and the outer diameter of the limit cap 236 is larger than the inner diameter of the limit hole 234. The addition of a limit cap 236 at the end of the threaded rod 235, with its outer diameter being larger than the inner diameter of the limit hole 234 in the mounting frame 231, enhances the fixing reliability of the mounting frame 231, prevents the connection of the mounting frame 231 from loosening due to equipment vibration, and ensures that the filter screen 232 always remains in a sealed state during operation.

[0026] A support plate 25 is fixedly installed below the suction fan 20, and a support leg 26 is fixedly installed below the support plate 25. The support leg 26 is fixedly connected to the base 1. The suction fan 20 is independently fixed to the base 1 through the support plate 25 and the support leg 26, forming a stable load-bearing structure, effectively dispersing the vibration load during the operation of the fan, ensuring the overall stability of the equipment, and extending the service life of key components.

[0027] A support rod 24 is fixedly installed on the gas collection hood 23, and the end of the support rod 24 away from the gas collection hood 23 is fixedly connected to the base 1. The support rod 24 is used to directly anchor the gas collection hood 23 to the base 1, providing additional rigid support for the gas collection hood 23. This can resist the negative pressure disturbance generated by the hot gas suction, ensure that the gas collection hood 23 is accurately suspended in the optimal position above the discharge trough 12, improve the hot gas collection efficiency, and reduce pipeline stress.

[0028] Working principle: When using the waste heat recovery treatment device for sludge to prepare ceramsite, when the granulator 11 completes granulation and discharges the high-temperature ceramsite blank through the discharge chute 12, the suction fan 20 in the recovery mechanism 2 is started. The suction fan 20 generates negative pressure at its air inlet end, and draws in the air in the area of ​​the gas collection hood 23 above the discharge chute 12 through the connecting pipe 22. The drawn-in hot air first passes through the filter screen 232 on the detachable mounting frame 231 inside the extension shell 230 of the gas collection hood 23, where dust and larger particulate impurities are intercepted and filtered. After being pressurized by the suction fan 20, the filtered and purified hot air is forced to be transported from its air outlet end through the air outlet pipe 21 to the drying chamber for drying wet sludge. The hot air transported to the drying chamber has a high temperature and can be directly used as a heat source for preheating or evaporating water in the drying process, replacing or reducing the heat that originally required additional energy consumption, thereby realizing the effective recovery and recycling of waste heat in the granulation process and reducing the overall energy consumption of the system.

[0029] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A waste heat recovery treatment device for sludge preparation of ceramsite, comprising a base (1) and a base (10) above the base (1), wherein a granulator (11) is fixedly disposed above the base (10), and a discharge chute (12) is provided at the output end of the granulator (11). Its features are, Also includes: The recycling mechanism (2) is located above the discharge trough (12) and is used to absorb the hot air from the discharge end of the granulator (11). The recycling mechanism (2) includes a suction fan (20) and the air inlet of the suction fan (20) is fixedly connected to a connecting pipe (22). The end of the connecting pipe (22) away from the suction fan (20) is fixedly connected to a gas collection hood (23) and the gas collection hood (23) is located above the discharge trough (12). The air outlet of the suction fan (20) is fixedly connected to an air outlet pipe (21) and the air outlet of the air outlet pipe (21) extends to a drying chamber for drying sludge.

2. The waste heat recovery treatment device for sludge preparation of ceramsite according to claim 1, characterized in that: An extension shell (230) is integrally provided on the gas collection hood (23). An installation frame (231) is detachably installed on the inner side of the extension shell (230), and a filter screen (232) is fixedly provided on the inner side of the installation frame (231).

3. The waste heat recovery treatment device for sludge preparation of ceramsite according to claim 2, characterized in that: The mounting frame (231) is provided with a limiting hole (234), and a threaded rod (235) is provided in the limiting hole (234). The gas collecting hood (23) is provided with a threaded hole (233), and the threaded hole (233) is threadedly connected to the threaded rod (235).

4. The waste heat recovery treatment device for sludge preparation of ceramsite according to claim 3, characterized in that: A limit cap (236) is fixedly provided on the threaded rod (235), and the outer diameter of the limit cap (236) is larger than the inner diameter of the limit hole (234).

5. The waste heat recovery treatment device for sludge preparation of ceramsite according to claim 1, characterized in that: A support plate (25) is fixedly installed below the suction fan (20), and a support leg (26) is fixedly installed below the support plate (25), and the support leg (26) is fixedly connected to the base (1).

6. The waste heat recovery treatment device for sludge preparation of ceramsite according to claim 1, characterized in that: A support rod (24) is fixedly installed on the gas collection hood (23), and the end of the support rod (24) away from the gas collection hood (23) is fixedly connected to the base (1).

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