Sludge dryer

Abstract

The utility model discloses a sludge drying machine, include: horizontal drying cylinder, support structure, support structure is used for with the horizontal drying cylinder and ground reservation space, stirring assembly, stirring assembly is assembled in the horizontal drying cylinder, is used for turning over sludge. Can solve the problem of low drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sludge processing technology, and in particular to a sludge dryer. Background Technology

[0002] A sludge dryer is a device that removes moisture from sludge through heating and ventilation. Its core function is to process high-moisture sludge into low-moisture dry sludge. It evaporates and discharges the moisture from the sludge through heat exchange methods such as conduction, convection, or radiation, thereby achieving sludge reduction, stabilization, and harmless treatment. Common types of sludge dryers include drum dryers, disc dryers, and fluidized bed dryers, suitable for sludge treatment scenarios in municipal wastewater treatment plants and industrial wastewater treatment stations. Sludge drying consumes a large amount of heat energy, especially when processing high-moisture sludge, where thermal efficiency is low, energy waste is significant, and operating costs remain high. Some dryers suffer from uneven sludge distribution; for example, in drum dryers, sludge tends to accumulate at the bottom, resulting in insufficient contact with the heat medium, leading to long drying times and low throughput. Furthermore, sludge adhesion to the walls is common, further reducing heat transfer efficiency and processing speed. Based on these issues, a sludge dryer was designed. Utility Model Content

[0003] To overcome at least one of the defects described in the prior art, this utility model provides a sludge dryer, which can solve the problem of low drying efficiency.

[0004] The technical solution adopted by this utility model to solve its problem is:

[0005] A sludge dryer includes: a horizontal drying drum; a support structure for pre-reserving space between the horizontal drying drum and the ground; and a stirring assembly assembled inside the horizontal drying drum for agitating the sludge.

[0006] By adopting the above-mentioned solution, the sludge dryer is equipped with a horizontal drying drum. Combined with a support structure, space is reserved between the drying drum and the ground, facilitating equipment installation, maintenance, and the arrangement of related auxiliary equipment. The stirring assembly is installed inside the horizontal drying drum, which can agitate the sludge, effectively solving the problems of uneven sludge distribution, easy accumulation at the bottom, and insufficient contact with the heat medium in the prior art. This allows for more uniform heating of the sludge, improves thermal efficiency, shortens drying time, increases processing capacity, and thus reduces operating costs.

[0007] Furthermore, the horizontal drying cylinder is provided with an inlet and an outlet that communicate with its interior.

[0008] By adopting the above scheme, the horizontal drying drum has inlet and outlet ports that communicate with the interior, making the sludge loading and unloading more convenient and orderly. This avoids chaos during the sludge feeding and unloading process, ensures the continuity of the drying process, helps improve overall processing efficiency, reduces time waste caused by poor feeding or unloading, and indirectly alleviates the problem of low processing capacity.

[0009] Furthermore, the support structure includes: a support frame disposed below the horizontal drying cylinder; and a support connecting rod for connecting the support frame and the horizontal drying cylinder.

[0010] By adopting the above scheme, the support structure consists of a support frame and a support connecting rod, which is simple and stable. The support frame is located below the horizontal drying cylinder, and the support connecting rod connects the two, which can stably support the horizontal drying cylinder and ensure the stability of the drying cylinder during operation. Stable support can reduce the impact of equipment vibration on the drying process, ensure the normal operation of components such as the stirring assembly, and thus maintain the sludge turning effect, which is conducive to the full contact between the sludge and the heat medium and improves thermal efficiency.

[0011] Furthermore, the stirring assembly includes: a stirring shaft arranged along the length of the horizontal drying cylinder; and stirring rods spaced apart along the axial direction of the stirring shaft.

[0012] By adopting the above scheme, the stirring shaft of the stirring assembly is set along the length of the horizontal drying cylinder, and the stirring rods are spaced apart along the axial direction of the stirring shaft. This structure can more comprehensively agitate the sludge inside the drying cylinder. The spaced arrangement of the stirring rods ensures that sludge in different locations can be stirred, further improving the uneven distribution of sludge, enhancing the contact effect between the sludge and the heat medium, improving heat transfer efficiency, accelerating the drying speed, increasing the throughput, and reducing energy consumption and operating costs.

[0013] Furthermore, the horizontal drying cylinder is made of corrosion-resistant stainless steel.

[0014] By adopting the above solution, the horizontal drying cylinder is made of corrosion-resistant stainless steel, which can resist the erosion of acidic, alkaline substances and chloride ions in the sludge. This reduces the likelihood of equipment damage due to corrosion, extends equipment service life, lowers maintenance costs, ensures long-term stable operation of the equipment, and avoids affecting drying efficiency and effect due to equipment corrosion.

[0015] Furthermore, the inner wall of the horizontal drying cylinder is coated with a polytetrafluoroethylene anti-corrosion coating.

[0016] By adopting the above solution, the inner wall of the horizontal drying cylinder is coated with a polytetrafluoroethylene (PTFE) anti-corrosion coating, which further enhances the corrosion resistance of the drying cylinder. Simultaneously, PTFE's non-stick properties effectively reduce sludge adhesion to the wall. This solves the problem of reduced heat transfer efficiency and processing speed caused by sludge adhesion in the prior art, ensuring effective heat transfer, improving drying efficiency, and reducing the time and manpower spent on cleaning sludge adhering to the wall.

[0017] Furthermore, the body of the horizontal drying cylinder is inclined.

[0018] By adopting the above scheme, the horizontal drying drum is inclined, utilizing gravity to assist sludge flow. This allows the sludge to move slowly along the drum during the drying process, preventing sludge accumulation. Combined with the agitation of the stirring components, this ensures more thorough contact between the sludge and the heat medium, shortening the drying time, increasing the throughput, and facilitating the smooth discharge of the dried sludge from the outlet, thus improving overall processing efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the stirring assembly according to an embodiment of the present invention;

[0021] The meanings of the reference numerals in the attached drawings are as follows: 1. Horizontal drying cylinder; 2. Support structure; 21. Support frame; 22. Support connecting rod; 3. Stirring assembly; 31. Stirring shaft; 32. Stirring rod; 4. Feed inlet; 5. Discharge outlet. Detailed Implementation

[0022] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0023] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] See Figures 1-2 This utility model discloses a sludge dryer, comprising a horizontal drying cylinder 1, a supporting structure 2, and a stirring assembly 3. The supporting structure 2 provides space between the horizontal drying cylinder 1 and the ground. The stirring assembly 3 is installed inside the horizontal drying cylinder 1 to agitate the sludge. The horizontal drying cylinder 1, combined with the supporting structure 2, provides space between the drying cylinder and the ground, facilitating equipment installation, maintenance, and the arrangement of related auxiliary equipment. The stirring assembly 3, installed inside the horizontal drying cylinder 1, agitates the sludge, effectively solving the problems of uneven sludge distribution, easy accumulation at the bottom, and insufficient contact with the heat medium in the prior art. This results in more uniform heating of the sludge, improved thermal efficiency, shortened drying time, increased processing capacity, and thus reduced operating costs.

[0027] In this embodiment, the horizontal drying cylinder 1 is provided with an inlet 4 and an outlet 5 communicating with its interior. This arrangement facilitates more convenient and orderly sludge loading and unloading. It avoids confusion during sludge feeding and unloading, ensures the continuity of the drying process, helps improve overall processing efficiency, reduces time wastage caused by poor feeding or unloading, and indirectly alleviates the problem of low processing capacity.

[0028] In this embodiment, the support structure 2 includes a support frame 21 and a support connecting rod 22. The support frame 21 is disposed below the horizontal drying cylinder 1, and the support connecting rod 22 is used to connect the support frame 21 and the horizontal drying cylinder 1. The support structure 2, composed of the support frame 21 and the support connecting rod 22, has a simple and stable structure. The support frame 21, disposed below the horizontal drying cylinder 1, and the support connecting rod 22 connecting the two, can stably support the horizontal drying cylinder 1, ensuring the stability of the drying cylinder during operation. Stable support can reduce the impact of equipment vibration on the drying process, ensure the normal operation of components such as the stirring assembly 3, thereby maintaining the sludge agitation effect, facilitating full contact between the sludge and the heat medium, and improving thermal efficiency.

[0029] In this embodiment, the stirring assembly 3 includes a stirring shaft 31 and stirring rods 32. The stirring shaft 31 is arranged along the length of the horizontal drying cylinder 1, and the stirring rods 32 are spaced apart along the axial direction of the stirring shaft 31. This structure allows for more comprehensive agitation of the sludge within the drying cylinder. The spaced arrangement of the stirring rods 32 ensures that sludge at different locations is stirred, further improving the uneven distribution of sludge, enhancing the contact between the sludge and the heat medium, increasing heat transfer efficiency, accelerating the drying speed, increasing throughput, and reducing energy consumption and operating costs.

[0030] Specifically, the horizontal drying cylinder 1 is made of corrosion-resistant stainless steel, which can resist the erosion of acidic, alkaline substances and chloride ions in the sludge. This reduces the likelihood of equipment damage due to corrosion, extends equipment lifespan, lowers maintenance costs, ensures long-term stable operation, and avoids the impact of equipment corrosion on drying efficiency and effect. The inner wall of the horizontal drying cylinder 1 is coated with a polytetrafluoroethylene (PTFE) anti-corrosion coating, which further enhances the corrosion resistance of the drying cylinder. PTFE's non-stick properties effectively reduce sludge adhesion to the wall. This solves the problem of reduced heat transfer efficiency and processing speed caused by sludge adhesion to the wall in the prior art, ensuring heat transfer effect, improving drying efficiency, and reducing the time and manpower spent on cleaning sludge adhering to the wall. The horizontal drying cylinder 1 is tilted, utilizing gravity to assist sludge flow, allowing the sludge to move slowly along the cylinder during the drying process and preventing sludge accumulation. Combined with the stirring component 3, the sludge comes into more thorough contact with the heat medium, shortens the drying time, increases the processing capacity, and helps the dried sludge to be smoothly discharged from the discharge port 5, thereby improving the overall processing efficiency.

[0031] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A sludge dryer, characterized in that, include: Horizontal drying drum; A support structure is provided to allow space between the horizontal drying cylinder and the ground. A stirring assembly is installed inside the horizontal drying cylinder and is used to agitate the sludge.

2. The sludge dryer according to claim 1, characterized in that, The horizontal drying cylinder has an inlet and an outlet that communicate with its interior.

3. A sludge dryer according to claim 2, characterized in that, The support structure includes: A support frame is provided below the horizontal drying cylinder; A support connecting rod is provided to connect the support frame and the horizontal drying cylinder.

4. A sludge dryer according to claim 3, characterized in that, The stirring assembly includes: A stirring shaft is provided along the length of the horizontal drying cylinder; Stirring rods are spaced apart along the axial direction of the stirring shaft.

5. A sludge dryer according to claim 4, characterized in that, The horizontal drying cylinder is made of corrosion-resistant stainless steel.

6. A sludge dryer according to claim 5, characterized in that, The inner wall of the horizontal drying cylinder is coated with a polytetrafluoroethylene anti-corrosion coating.

7. A sludge dryer according to claim 6, characterized in that, The horizontal drying cylinder is inclined.

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