Silt drying apparatus

Abstract

The application discloses a kind of sludge drying equipment, comprising: machine body, heat exchange component, fan assembly and air guide piece, the inside of the machine body is separated into baking room cavity, heat exchange cavity and fan cavity, the baking room cavity, the heat exchange cavity and the fan cavity are mutually communicated to form air circulation, the heat exchange component is installed in the heat exchange cavity, the fan assembly is installed in the fan cavity, the air guide piece is connected with the air outlet of the fan assembly, and the air guide piece extends into the baking room cavity, the side surface and top surface of the air guide piece are provided with air guide opening, so that the baking room cavity is evenly distributed wind. The application realizes the rapid and uniform part of baking room cavity, so that the drying efficiency is higher, and the drying effect is better.

Description

Technical Field

[0001] This application relates to the technical field of drying equipment, and more particularly to a sludge drying equipment. Background Technology

[0002] In the fields of environmental protection and solid waste resource utilization, sludge drying is a key step in achieving sludge reduction, harmlessness, and resource recovery, and sludge drying equipment is the core equipment in this process. Currently, existing sludge drying equipment typically relies on fans as the power source for hot air delivery, using specific vent structures to blow hot air directly into the drying chamber to heat and dry the sludge piled inside. However, current mainstream sludge drying equipment has significant technical flaws in its vent design and air distribution: its vents generally adopt a direct-blowing structure, where hot air is directed directly into the drying chamber after being output from the vent. This direct-blowing method leads to a significant uneven airflow distribution within the drying chamber. The area directly facing the vent experiences concentrated airflow and higher velocity due to the direct impact of hot air, while the areas on either side of the vent experience rapid airflow attenuation and lower velocity due to the longer diffusion path and greater resistance. The aforementioned uneven airflow distribution directly leads to two key technical problems: First, the overall airflow in the drying chamber requires a relatively long period of diffusion and mixing before it gradually approaches a relatively uniform state, significantly prolonging the preheating cycle and overall processing time of sludge drying, and reducing the drying efficiency of the equipment. Second, considering that the sludge drying process requires continuous hot air to maintain the high-temperature drying environment in the drying chamber, the existing direct-blowing air outlet structure lacks effective hot air guidance and uniform distribution design. Even after a long period of diffusion, it is still difficult to achieve rapid and uniform distribution of hot air in the drying chamber, resulting in significant differences in the drying rate of sludge in different areas. Some sludge is over-dried while some sludge does not reach the preset drying effect, seriously affecting the quality stability of sludge dried products, and also causing a waste of heat energy, which is not conducive to the control of equipment operating energy consumption. Utility Model Content

[0003] The purpose of this application is to provide a sludge drying device that can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solution: On one hand, a sludge drying device is provided, comprising: a body, a heat exchange component, a fan component, and an air guide. The interior of the body is divided into a drying chamber, a heat exchange chamber, and a fan chamber. The drying chamber, the heat exchange chamber, and the fan chamber are interconnected to form an air circulation. The heat exchange component is installed in the heat exchange chamber, and the fan component is installed in the fan chamber. The air guide is connected to the air outlet of the fan component and extends into the drying chamber. The side and top surfaces of the air guide are provided with air guide ports to ensure uniform air distribution in the drying chamber.

[0005] Furthermore, the air guide has a first end and a second end, the first end being connected to the air outlet, the second end extending horizontally into the oven cavity, and the second end being located in the middle of the oven cavity in the horizontal direction on the side opposite to the fan assembly.

[0006] Furthermore, the lower part of the drying chamber is symmetrically provided with dust collection plates. The vertical projection of the dust collection plate on the side near the fan assembly covers the air outlet on the plane where the air outlet is located, and the dust collection plate is provided with an air-avoiding groove to avoid the air guide.

[0007] Furthermore, the air guide includes a trapezoidal portion and a rectangular portion, the rectangular portion is connected to the upper bottom end of the trapezoidal portion, the lower bottom end of the trapezoidal portion is connected to the air outlet, and the vertical projection of the lower bottom end of the trapezoidal portion onto the plane of the air outlet covers the air outlet.

[0008] Furthermore, the blower assembly includes two blowers spaced apart along the length of the drying chamber, each blower having a corresponding air outlet connected to the drying chamber, and each air outlet having an air guide.

[0009] Furthermore, the upper part of the baking chamber is provided with a multi-layer conveyor belt.

[0010] Furthermore, the interior of the machine body is provided with a horizontal partition and a vertical partition. The vertical partition is installed below the horizontal partition, the heat exchange chamber is above the horizontal partition, one side of the vertical partition is the drying chamber, and the other side is the fan chamber.

[0011] Furthermore, a first through-hole is provided on the horizontal partition, the first through-hole connecting the baking chamber and the heat exchange chamber, and a filter is provided on the first through-hole, the air inlet end of the filter covering the first through-hole.

[0012] Furthermore, a second through-hole is provided on the horizontal partition, and the air inlet end of the fan assembly is connected to the second through-hole.

[0013] Furthermore, the air outlet is located on the vertical partition, and the air guide is installed on the vertical partition.

[0014] The beneficial effects of this application are as follows: The multi-directional air outlet design of the air guide, combined with the closed-loop air circulation system formed by the drying chamber, heat exchange chamber, and fan chamber inside the machine body, not only allows hot air to quickly cover the entire drying chamber without long diffusion time, but also greatly shortens the time required for uniform air volume, significantly improves air distribution efficiency, and effectively shortens the preheating cycle and overall processing time of sludge drying, especially suitable for large-scale batch processing of sludge; it can also ensure that the air volume and wind speed of hot air in each area of ​​the drying chamber are consistent through the preset opening size and distribution density design of the multi-directional air outlet, so that the heating temperature and contact wind speed of sludge in different locations are kept uniform, completely avoiding the quality problems of some sludge being over-dried or some not meeting the standards in the prior art, ensuring the uniformity of moisture content and physical properties of dried sludge, while reducing the heat energy waste caused by local overheating, and further reducing the energy consumption of equipment operation by combining the closed-loop circulation for the recovery and utilization of waste heat, which meets the needs of the energy-saving and environmental protection industry. Attached Figure Description

[0015] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is an internal schematic diagram of the sludge drying equipment described in the embodiments of this application; Figure 2 This is a schematic diagram of the air guide component described in the embodiments of this application.

[0017] In the diagram: 1. Heat exchanger assembly; 2. Fan assembly; 3. Air guide; 301. Air vent; 302. Trapezoidal section; 303. Rectangular section; 4. Drying chamber; 5. Heat exchange chamber; 6. Fan chamber; 7. Ash collection plate; 8. Conveyor belt; 9. Filter; 10. Horizontal partition; 11. Vertical partition. Detailed Implementation

[0018] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] like Figure 1 and Figure 2 As shown, this embodiment provides a sludge drying device, including: a body, a heat exchange component 1, a fan component 2, and an air guide 3. The interior of the body is divided into a drying chamber 4, a heat exchange chamber 5, and a fan chamber 6. The drying chamber 4, the heat exchange chamber 5, and the fan chamber 6 are interconnected to form an air circulation. The heat exchange component 1 is installed in the heat exchange chamber 5, and the fan component 2 is installed in the fan chamber 6. The air guide 3 is connected to the air outlet of the fan component 2 and extends into the drying chamber 4. The side and top surfaces of the air guide 3 are provided with air guide ports 301 to ensure uniform air distribution in the drying chamber 4.

[0022] Based on the above scheme, the drying chamber 4, heat exchange chamber 5, and fan chamber 6 inside the machine are connected in pairs to form a closed-loop air circulation. When the fan assembly 2 is running, the humid and cold air in the drying chamber 4 is first drawn to the fan chamber 6 and then pushed to the heat exchange chamber 5. After the heat exchange assembly 1 heats the air, the hot air is transported back to the fan chamber 6 and finally enters the air guide 3 through the air outlet of the fan assembly 2. This circulation design avoids the disorderly diffusion of hot air and lays a stable airflow foundation for the subsequent uniform air distribution.

[0023] The air guide component 3, directly connected to the air outlet of the fan assembly 2, extends into the interior of the drying chamber 4. It has air guide vents 301 on both its sides and top, breaking the limitations of existing direct-blowing vents. After entering the air guide component 3, the hot air does not blow directly in a single direction, but diffuses through the side air guide vents 301 to the sides of the drying chamber 4 and through the top air guide vents 301 to the upper part of the drying chamber 4, forming a multi-dimensional airflow path. This design directly solves the problem of strong airflow in the direct-blowing area and weak airflow on the sides in existing technologies, enabling hot air to simultaneously cover both the core and edge areas of the drying chamber 4, significantly shortening the diffusion time required for uniform airflow.

[0024] Furthermore, because the air circulation system can continuously provide stable pressure hot air to the air guide 3, and the multiple air guides 301 of the air guide 3 are designed with preset opening sizes and distribution densities to adapt to the size of the drying chamber 4, it can ensure that the air volume and wind speed of different air guides 301 tend to be consistent. Even under the condition of continuous hot air circulation for a long time, it can avoid the uneven air volume attenuation caused by differences in diffusion resistance, and achieve rapid, stable and uniform distribution of hot air in the drying chamber 4.

[0025] It is worth noting that the core technical defects of this equipment can be solved by simply adding an air guide component 3. There is no need for large-scale modifications to core components such as the body, fan assembly 2, and heat exchange assembly 1. This significantly reduces the cost and difficulty of technical upgrades. Moreover, the length of the air guide component 3 and the distribution of the air vents 301 can be flexibly adjusted according to the size of the drying chamber 4. This makes it suitable for upgrading and modifying different types of drying equipment such as municipal sludge and industrial sludge, and has wide applicability. At the same time, uniform air distribution can also avoid the destruction of sludge accumulation caused by excessive local airflow impact, reduce the loss of fan assembly 2 due to excessive load on one side, make the operation of each component of the equipment more stable, indirectly extend the overall service life, reduce the later maintenance cost, and comprehensively improve the practicality, economy and reliability of the equipment.

[0026] Specifically, the air guide 3 has a first end and a second end. The first end is connected to the air outlet, and the second end extends horizontally into the drying chamber 4, located at the middle of the drying chamber 4 in the horizontal direction, away from the fan assembly 2. The first end serves as the connection point between the air guide 3 and the air outlet, accurately receiving the hot air output from the fan assembly 2, preventing leakage or airflow dispersion of the hot air before it enters the air guide 3, and ensuring that the hot air enters the air guide 3 with a stable pressure. The second end extends horizontally to the middle of the drying chamber 4 in the horizontal direction and is located on the side away from the fan assembly 2. This position design allows the air guide 3 to form a horizontally extending layout within the drying chamber 4, pointing from the fan side to the middle of the opposite side. From a spatial perspective, the coverage of the air guide 3 can penetrate the core area of ​​the drying chamber 4 in the horizontal direction, allowing hot air to be transported from the side of the drying chamber 4 near the fan assembly 2 through the air guide 3 to the central area away from the fan assembly 2. Combined with the air guides 301 on the side and top of the air guide 3, it achieves radial air distribution from the center to both sides and from bottom to top, completely breaking the limitation of the existing direct-blowing air outlets that can only cover a local area on the fan side, and solving the problem of insufficient air volume on the side of the drying chamber 4 away from the fan assembly 2 due to the long distance and rapid airflow attenuation.

[0027] The design of the end structure of the air guide 3 further optimizes the air distribution effect based on the original multi-air guide vents 301, bringing significant benefits. First, it greatly improves the uniformity of air distribution in the horizontal direction of the drying chamber 4. Since the second end extends to the horizontal middle of the drying chamber 4 and is away from the fan assembly 2, the air guide 3 can directly deliver hot air to the weak airflow area of ​​the drying chamber 4 away from the fan, and then diffuse it in all directions through the air guide vents 301. This avoids the problem of hot air only accumulating on the fan side and the lack of airflow on the opposite side. It further reduces the difference in airflow and velocity in the horizontal direction of the drying chamber 4 from the fan side to the middle of the opposite side, and then to the edge areas on both sides, achieving more precise and uniform air distribution throughout the entire area. It is especially suitable for drying chambers 4 with a large horizontal span, effectively solving the problem of uneven air distribution caused by the spatial span of large-sized drying chambers 4. Secondly, it enhances airflow stability and heat utilization efficiency. The precise connection between the first end and the air outlet reduces energy loss of hot air in the initial stage of transmission, ensuring that the hot air entering the air guide 3 maintains a stable pressure. The second end is located in the middle of the drying chamber 4, making the hot air transport path in the air guide 3 shorter and more direct, reducing the airflow resistance inside the air guide 3, reducing heat loss due to excessively long paths, further improving the utilization efficiency of hot air, and indirectly reducing energy consumption. Finally, the design enhances the adaptability and installation flexibility of the equipment structure. The second end extends horizontally to the middle of the drying chamber 4, eliminating the need for other complex support structures within the chamber. This horizontal extension allows for a reasonable layout of the air guide 3 within the drying chamber 4, adapting to drying chambers of varying depths. Whether the drying chamber 4 is shallow or deep, the extension length of the second end can be adjusted to ensure it remains in the horizontal middle position of the chamber 4, without requiring modifications to the overall structure. This further reduces the difficulty of adapting the equipment to different scenarios. Simultaneously, this layout provides more flexible space for subsequent sludge stacking within the drying chamber 4, preventing improper placement of the air guide 3 from affecting the amount or uniformity of sludge stacking.

[0028] Furthermore, the lower part of the drying chamber 4 is symmetrically provided with dust collection plates 7. The vertical projection of the dust collection plate 7 on the plane where the air outlet is located covers the air outlet, and the dust collection plate 7 is provided with an air-avoiding groove to avoid the air guide 3. From the perspective of dust collection, sludge easily generates dust particles during the drying process, which will settle towards the lower part of the drying chamber 4 under gravity. The symmetrically arranged dust collection plates 7 can directly receive these settled dust particles, preventing dust from accumulating at the bottom of the drying chamber 4 and becoming difficult to clean, or from spreading to other areas of the equipment with the airflow. From the perspective of component protection, the dust collection plate 7 on the side near the fan assembly 2 has its vertical projection covering the air outlet of the fan assembly 2. When dust drifts towards the air outlet, the dust collection plate 7 can form a physical barrier to prevent dust from entering the air outlet and the fan chamber 6, preventing dust from adhering to the impeller, motor and other core components of the fan assembly 2, and avoiding component wear or blockage. From the perspective of structural adaptation, the clearance groove opened in the dust collection plate 7 is precisely matched with the shape and installation path of the air guide 3. While achieving the dust blocking function, it will not interfere with the extension layout of the air guide 3, ensuring that the air guide 3 can extend normally to the middle of the drying chamber 4 without affecting the multi-directional air distribution effect, achieving structural compatibility between protection and air distribution.

[0029] Furthermore, the air guide 3 includes a trapezoidal portion 302 and a rectangular portion 303. The rectangular portion 303 is connected to the upper bottom end of the trapezoidal portion 302, and the lower bottom end of the trapezoidal portion 302 is connected to the air outlet. The vertical projection of the lower bottom end of the trapezoidal portion 302 onto the plane of the air outlet covers the air outlet. The lower bottom end of the trapezoidal portion 302 is directly connected to the air outlet of the fan assembly 2, and its projection completely covers the air outlet, maximizing the capacity to receive the hot air output by the fan and preventing leakage or dispersion of airflow at the inlet. Simultaneously, the trapezoidal portion 302's cross-sectional shape, wider at the bottom and narrower at the top, provides a gradual buffering and pressurizing effect on the incoming hot air. As the hot air enters from the wider lower bottom end, the airflow speed and pressure gradually increase as the cross-section of the trapezoidal portion 302 gradually narrows, effectively solving the problem of unstable pressure during the initial transmission stage of the hot air. Furthermore, the rectangular section 303, which connects to the bottom of the trapezoidal section 302, maintains a consistent cross-sectional dimension. After the stable airflow, pressurized by the trapezoidal section 302, enters the rectangular section 303, it forms a uniformly distributed airflow field within the rectangular section 303. When the airflow is output through the air guides 301 on the side and top of the rectangular section 303, the differences in air volume and velocity among the air guides 301 are further reduced, achieving more precise multi-directional air distribution. The large-area connection between the trapezoidal section 302 and the air outlet, as well as the smooth transition between the rectangular section 303 and the trapezoidal section 302, enhances the structural compatibility of the air guide component 3 with the fan assembly 2 and the drying chamber 4, ensuring smooth airflow transmission and avoiding increased airflow resistance due to improper structural connections.

[0030] In some embodiments, the blower assembly 2 includes two blowers spaced apart along the length of the drying chamber 4. Each blower has a corresponding air outlet connecting to the drying chamber 4, and each air outlet is equipped with an air guide 3. The two blowers spaced apart along the length of the drying chamber 4 can respectively deliver hot air into the drying chamber 4 from different areas along the length of the drying chamber 4. Combined with their respective air guides 3, the air outlet ranges of the two air guides 3 complement and overlap along the length of the drying chamber 4. The blower near one end of the drying chamber 4 covers the end and middle areas through the air guide 3, and the blower near the other end covers the other end and middle areas through the air guide 3, avoiding the problem of insufficient airflow at both ends of the drying chamber 4 due to the limited coverage of a single blower.

[0031] In addition, the output power of the two blowers can be independently adjusted. When the airflow resistance changes in a certain area of ​​the drying chamber 4 due to the difference in the thickness of the silt accumulation, the air speed of the corresponding blower can be adjusted to maintain the stable air pressure of the air guide 3 in that area, avoiding the air pressure fluctuation of the entire area caused by the overall load change of a single blower. Moreover, the simultaneous operation of the two blowers can make the hot air diffuse synchronously from two starting points in the length direction of the drying chamber 4. Combined with the multi-directional air outlet of the air guide 3, the time for hot air to fill the drying chamber 4 is greatly shortened, solving the problem of long air distribution time caused by a single air distribution starting point in the long-sized drying chamber 4.

[0032] Generally, the upper part of the drying chamber 4 is equipped with a multi-layer conveyor belt 8. The multi-layer conveyor belt 8 is arranged in layers along the height direction, which can increase the sludge carrying capacity without expanding the horizontal area of ​​the drying chamber 4. Compared with a single-layer belt, the processing capacity is greatly improved, which is especially suitable for scenarios with limited land resources or large-scale continuous sludge processing, effectively reducing the equipment footprint and infrastructure costs.

[0033] In some embodiments, the interior of the machine body is provided with a horizontal partition 10 and a vertical partition 11. The vertical partition 11 is installed below the horizontal partition 10. The heat exchange chamber 5 is located above the horizontal partition 10. One side of the vertical partition 11 is the drying chamber 4, and the other side is the fan chamber 6. The horizontal partition 10 horizontally divides the upper part of the machine body into an independent heat exchange chamber 5, allowing the heat exchange components 1 to be centrally installed in this area, avoiding spatial interference with the drying chamber 4 and fan chamber 6 below. The vertical partition 11 vertically divides the space below the horizontal partition 10, clearly dividing the space below into the drying chamber 4 and the fan chamber 6, achieving physical isolation between the drying operation and the power supply.

[0034] Meanwhile, the close proximity of the chambers shortens the airflow transmission path and reduces the temperature loss of hot air during transmission, allowing the hot air output from the heat exchange chamber 5 to reach the fan chamber 6 and the drying chamber 4 more quickly, indirectly improving drying efficiency.

[0035] Specifically, the horizontal partition 10 is provided with a first through-hole, which connects the drying chamber 4 and the heat exchange chamber 5. A filter 9 is provided on the first through-hole, and the air inlet of the filter 9 covers the first through-hole. The horizontal partition 10 is also provided with a second through-hole, and the air inlet of the fan assembly 2 is connected to the second through-hole. The air outlet is opened on the vertical partition 11, and the air guide 3 is installed on the vertical partition 11.

[0036] First, this design significantly improves the reliability and heat exchange efficiency of the heat exchange component 1. The filter 9 at the first inlet can prevent dust from entering the heat exchange chamber 5 for a long time, avoiding the formation of scale on the surface of the heat exchange component 1. This allows the heat exchange component 1 to maintain a high-efficiency heat exchange state for a long time, with the heat utilization efficiency remaining stable at a high level. At the same time, it reduces the cleaning frequency of the heat exchange component 1 and lowers maintenance costs. Furthermore, the design of the filter 9's air inlet fully covering the first inlet prevents dust from escaping from the gaps at the edge of the inlet, further ensuring the cleanliness of the inside of the heat exchange chamber 5. Secondly, the stability of airflow circulation is enhanced, reducing energy loss. The precise connection between the second guide port and the air inlet of the fan assembly 2, as well as the tight connection between the air outlet of the vertical partition 11 and the air guide 3, ensures that the airflow is leak-free and free of eddies in the circulation path. This improves the extraction efficiency of the fan assembly 2 and shortens the transmission time of hot air from the heat exchange chamber 5 to the drying chamber 4, reducing the temperature loss of hot air during transmission. At the same time, the solidified circulation path avoids energy waste caused by disordered airflow, reducing the overall energy consumption of the equipment and meeting the requirements of energy conservation and environmental protection.

[0037] Finally, the stability of component installation and ease of maintenance are improved. The air guide 3 is directly installed on the vertical partition 11. Compared to traditional suspended installation, this improves structural stability, allows it to withstand stronger airflow impacts, and prevents displacement of the air guide 3 due to long-term use, ensuring that air distribution uniformity remains unaffected. Furthermore, the modular connection design of each port and component allows for individual disassembly of the filter 9, fan assembly 2, or air guide 3 during maintenance without damaging the overall partition structure. For example, when replacing the filter 9, simply remove the old part from below the horizontal partition 10 and install the new part, shortening maintenance time. At the same time, the clearly defined airflow channels facilitate quick location of faults by staff, improving the convenience and efficiency of equipment operation and maintenance.

[0038] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A sludge drying device, characterized in that, include: The machine body comprises a heat exchange component (1), a fan component (2), and an air guide component (3). The interior of the machine body is divided into a baking chamber (4), a heat exchange chamber (5), and a fan chamber (6). The baking chamber (4), the heat exchange chamber (5), and the fan chamber (6) are interconnected to form an air circulation. The heat exchange component (1) is installed in the heat exchange chamber (5), and the fan component (2) is installed in the fan chamber (6). The air guide component (3) is connected to the air outlet of the fan component (2) and extends into the baking chamber (4). The side and top surfaces of the air guide component (3) are provided with air guide ports (301) to ensure uniform air distribution in the baking chamber (4).

2. The sludge drying equipment according to claim 1, characterized in that, The air guide (3) has a first end and a second end. The first end is connected to the air outlet, and the second end extends horizontally into the oven cavity (4). The second end is located in the middle of the oven cavity (4) in the horizontal direction, away from the fan assembly (2).

3. The sludge drying equipment according to claim 1, characterized in that, The lower part of the drying chamber (4) is symmetrically provided with dust collection plates (7). The dust collection plate (7) on the side close to the fan assembly (2) covers the air outlet in the vertical projection of the air outlet plane. The dust collection plate (7) is provided with an air-avoiding groove to avoid the air guide (3).

4. The sludge drying equipment according to claim 3, characterized in that, The air guide (3) includes a trapezoidal part (302) and a rectangular part (303). The rectangular part (303) is connected to the upper bottom end of the trapezoidal part (302), and the lower bottom end of the trapezoidal part (302) is connected to the air outlet. The vertical projection of the lower bottom end of the trapezoidal part (302) onto the plane where the air outlet is located covers the air outlet.

5. The sludge drying equipment according to any one of claims 1-4, characterized in that, The blower assembly (2) includes two blowers spaced apart along the length of the baking chamber (4). Each blower has a corresponding air outlet connected to the baking chamber (4), and each air outlet is provided with an air guide (3).

6. The sludge drying equipment according to any one of claims 1-4, characterized in that, The upper part of the baking chamber (4) is provided with a multi-layer conveyor belt (8).

7. The sludge drying equipment according to any one of claims 1-4, characterized in that, The machine body is provided with a horizontal partition (10) and a vertical partition (11). The vertical partition (11) is installed below the horizontal partition (10). The heat exchange chamber (5) is above the horizontal partition (10). One side of the vertical partition (11) is the drying chamber (4), and the other side is the fan chamber (6).

8. The sludge drying equipment according to claim 7, characterized in that, The horizontal partition (10) is provided with a first through port, which connects the baking chamber (4) and the heat exchange chamber (5). A filter (9) is provided on the first through port, and the air inlet of the filter (9) covers the first through port.

9. The sludge drying equipment according to claim 7, characterized in that, The horizontal partition (10) is also provided with a second guide port, and the air inlet end of the fan assembly (2) is connected to the second guide port.

10. The sludge drying equipment according to claim 7, characterized in that, The air outlet is located on the vertical partition (11), and the air guide (3) is installed on the vertical partition (11).

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