Environment-friendly wastewater sludge drying treatment auxiliary device

Abstract

This invention discloses an environmentally friendly wastewater and sludge drying auxiliary device, specifically relating to the field of wastewater and sludge treatment technology. It includes a support frame on which a drying auxiliary component is mounted. The drying auxiliary component includes a treatment box fixedly installed on the support frame, with a treatment chamber inside the treatment box. This invention uses a buffer plate and a converging inclined plate to slow down and guide the flow of the wastewater and sludge mixture. Then, through the synergistic action of the sludge-separating arc strip and the permeable filter element, wastewater infiltration and sludge retention are quickly achieved, significantly improving solid-liquid separation efficiency. The sludge-collecting plate, with spring elasticity, presses against the sludge-separating arc strip to adapt to sludge layers of different thicknesses. Combined with scraping teeth, it precisely scrapes sludge deep into the guiding chamber. Simultaneously, the guiding slope and the sludge-collecting chamber concentrate and gather the sludge, completely preventing sludge residue accumulation. This clean and thorough sludge scraping operation not only prevents sludge accumulation from clogging the separation structure but also ensures stable sludge delivery to the subsequent dewatering and drying stages, ensuring a smooth transition.

Description

Technical Field

[0001] This invention relates to the field of wastewater and sludge treatment technology, and more specifically, to an environmentally friendly wastewater and sludge drying auxiliary device. Background Technology

[0002] Wastewater is a general term for water bodies that have lost their original use value or are polluted and cannot be directly reused due to production, daily life and various human activities. It includes industrial waste liquid, domestic sewage and runoff rainwater, etc. The pollutants it contains, such as organic matter, suspended solids, heavy metals, pathogens, etc., will seriously damage the ecological environment and threaten human health if discharged directly without treatment.

[0003] Sludge, as a solid / semi-solid precipitate generated during wastewater treatment, is characterized by high water content, easy decay and odor, and high levels of pollutants. Improper disposal can easily cause secondary pollution. Drying sludge not only reduces its water content and volumetric weight, lowering transportation and landfill costs, but also weakens its biodegradability, reduces the risk of spontaneous combustion, and improves its physical stability. This allows dried sludge to be used for resource utilization such as landfilling, composting, and building material preparation, making it a crucial step in the harmless, reduced-volume, and resource-oriented treatment of sludge.

[0004] Existing wastewater sludge drying auxiliary devices have simple solid-liquid separation structures in practical applications, resulting in low wastewater infiltration efficiency, easy sludge loss with wastewater, and incomplete separation. The sludge scraping components are mostly rigid and fixed, which cannot adapt to sludge layers of different thicknesses, easily leading to problems such as incomplete scraping and sludge residue accumulation. There is a lack of effective secondary dewatering process before sludge drying, resulting in high moisture content of sludge entering the drying stage, leading to high drying energy consumption and long drying cycle. After the sludge is transported to the drying chamber, it is easy to locally accumulate and clump, resulting in uneven heating, poor drying quality, and easy blockage of the discharge structure. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an environmentally friendly wastewater sludge drying and treatment auxiliary device, which aims to solve the problems mentioned in the background art.

[0006] The present invention provides the following technical solution: an environmentally friendly wastewater sludge drying treatment auxiliary device, including a support frame, on which drying auxiliary components are provided; The drying auxiliary component includes a processing box fixedly installed on a support frame, and the processing box has a processing cavity inside. A support frame is fixedly installed in the middle of the processing chamber, and sludge scraping plates for scraping sludge are symmetrically arranged at the top and bottom of the support frame. The bottom of the inner cavity of the treatment chamber is equipped with a permeable filter element for filtering sewage. Rubber pads are symmetrically fixed on both sides of the top of the permeable filter element. Several sludge-dividing arc strips are fixedly installed between two rubber pads, and an inclined dredging cavity is formed between two adjacent sludge-dividing arc strips. The mud-collecting plate is integrally formed with scraping teeth that extend into the dredging cavity. A spring is connected between the mud-collecting plate and the support frame, and the spring is used to make the mud-collecting plate elastically press against the mud-dividing arc strip.

[0007] Furthermore, the drying auxiliary component also includes a baffle fixedly connected to one side of the sludge-collecting plate, and the baffle and the sludge-collecting plate enclose a sludge-gathering cavity for collecting sludge.

[0008] Furthermore, a guide slope is provided on the side of the baffle away from the sludge-collecting plate, which is used to guide the sludge into the sludge-collecting cavity.

[0009] Furthermore, a drying box is fixedly connected to the top side of the treatment box, and a transition port is formed at the connection between the drying box and the treatment box. The centrifugal traction force generated by the rotation of the sludge-collecting plate can throw the sludge into the drying box through the transition port.

[0010] Furthermore, an electric heating plate is fixedly installed on one side of the inner wall of the drying oven, and a receiving plate is fixedly installed on the top side of the electric heating plate. Several frustum-shaped mud discharge holes are opened through the receiving plate. An electric heating controller is embedded in the outside of the drying oven. The electric heating controller is electrically connected to the electric heating plate and is used to regulate the heating temperature of the electric heating plate.

[0011] Furthermore, a rotating shaft is rotatably connected inside the transition port, and several filter cotton plates are fixedly arranged circumferentially on the outer side of the rotating shaft. The side of the filter cotton plate away from the rotating shaft is in contact with the surface of the receiving plate.

[0012] Furthermore, a first servo motor and a second servo motor are fixedly installed on one side of the outer wall of the processing box. The output shaft of the first servo motor is connected to the support frame through a transmission connection, and the output shaft of the second servo motor is connected to the rotating shaft through a transmission connection.

[0013] Furthermore, a drain hopper is fixedly connected to the bottom of the treatment box, and the drain hopper is used to collect and discharge the sewage filtered by the water-permeable filter element.

[0014] Furthermore, a buffer plate is fixedly installed at the top of the inner cavity of the processing chamber, and converging inclined plates are symmetrically fixedly installed on both sides of the buffer plate.

[0015] Furthermore, the vertical cross-section of the buffer plate and the two converging inclined plates are combined to form a trapezoid, and one of the converging inclined plates has several drainage slots on its surface. The drainage slots are used to drain the sewage collected by the converging inclined plates through one side of the top of the mud-dividing arc strip.

[0016] The technical effects and advantages of this invention are as follows: 1. This invention utilizes a buffer plate and a converging inclined plate to slow down and guide the flow of wastewater and sludge mixture. Then, through the synergistic action of the sludge-separating arc strip and the permeable filter element, wastewater infiltration and sludge interception are rapidly achieved, significantly improving solid-liquid separation efficiency and preventing sludge loss with the wastewater. The sludge-collecting plate, with its spring-loaded elasticity, presses against the sludge-separating arc strip to accommodate sludge layers of varying thicknesses. Combined with scraping teeth, it precisely scrapes sludge deep into the drainage cavity. Simultaneously, the guiding slope and the sludge-collecting cavity concentrate and gather the sludge, completely preventing sludge residue accumulation. This clean and thorough sludge scraping operation not only prevents sludge accumulation and blockage of the separation structure but also ensures stable sludge delivery to subsequent dewatering and drying stages, resulting in a smooth transition. 2. In this invention, the sludge centrifuged from the centrifuge is dehydrated by a rotating filter plate to absorb residual moisture, thus completing a secondary deep dehydration and effectively reducing the moisture content of the sludge entering the drying chamber. This reduction in sludge moisture content significantly reduces the processing load of subsequent electric heating drying, shortens the drying cycle, and directly reduces energy consumption, aligning with the principles of environmental protection and energy conservation. 3. In the centrifugal drying process of this invention, the rotating filter cotton plate beats the receiving plate, and together with the frustum-shaped sludge discharge holes, it gathers heat and disperses the sludge, preventing sludge from clumping and accumulating, and ensuring that the sludge is heated evenly. The evenly dispersed sludge is fully heated, which not only improves drying efficiency and ensures that the dried sludge is loose and free of hard lumps, but also prevents the discharge structure from clogging, achieving stable and continuous drying. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0018] Figure 1 This is a front view of the overall structure of the present invention.

[0019] Figure 2 This is a side view of the processing box, processing chamber, support frame, mud-collecting plate, baffle, drying box, buffer plate, and gathering inclined plate of the present invention.

[0020] Figure 3 This is a schematic diagram of the support frame, first servo motor, second servo motor, support frame, mud-collecting plate, drying box, buffer plate and gathering inclined plate of the present invention.

[0021] Figure 4 This is a schematic diagram of the support frame, mud-collecting plate, baffle, mud-gathering chamber, scraping teeth, guide ramp and spring of the present invention.

[0022] Figure 5 This is a schematic diagram of the rubber pad, mud-distributing arc strip, drying box, rotating shaft, drainage hopper, and second servo motor of the present invention.

[0023] Figure 6 This is a schematic diagram of the drying oven, electric heating plate, receiving plate, mud discharge hole, rotating shaft, filter cotton plate and electric heating controller of the present invention.

[0024] Figure 7 This is a schematic diagram of the buffer plate, the gathering inclined plate, and the dredging groove of the present invention.

[0025] The attached diagram is labeled as follows: 1. Support frame; 2. Processing box; 3. Processing chamber; 4. Support frame; 5. Mud-collecting plate; 6. Baffle; 7. Mud-gathering chamber; 8. Rubber pad; 9. Mud-separating arc strip; 10. Scraping teeth; 11. Guide slope; 12. Spring; 13. Water-permeable filter element; 14. Drying box; 15. Electric heating plate; 16. Receiving plate; 17. Mud discharge hole; 18. Rotating shaft; 19. Filter cotton plate; 20. Electric heating controller; 21. First servo motor; 22. Second servo motor; 23. Drainage hopper; 24. Buffer plate; 25. Gathering inclined plate; 26. Drainage channel. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] Example 1 like Figure 1-3 As shown, the environmentally friendly wastewater sludge drying auxiliary device of the present invention includes a support frame 1. The support frame 1 is welded from stainless steel square tubing and has an overall rectangular frame structure, which plays a role in stabilizing and supporting the entire device and preventing the equipment from shaking or tilting during operation. A treatment box 2 is fixedly installed on the top of the support frame 1. The treatment box 2 is a sealed box made of corrosion-resistant carbon steel and has a cylindrical treatment cavity 3 inside, providing a closed working space for solid-liquid separation of wastewater sludge.

[0028] like Figure 2 , 3As shown in Figure 7, a buffer plate 24 is fixedly installed at the top of the inner cavity of the treatment chamber 3. The buffer plate 24 is a flat plate with a diameter matching the inner diameter of the treatment chamber 3. Converging inclined plates 25 are symmetrically welded to both sides of the buffer plate 24. The vertical cross-section of the buffer plate 24 and the two converging inclined plates 25 is trapezoidal. The converging inclined plates 25 have an inclination angle of 40°, which can buffer and decelerate the wastewater entering the treatment chamber 3, preventing the wastewater from splashing out at high speed. Several rectangular drainage slots 26 are evenly opened on the surface of one of the converging inclined plates 25. The wastewater collected by the converging inclined plate 25 is evenly guided through the drainage slots 26 to one side of the top of the lower sludge distribution arc strip 9, achieving uniform wastewater distribution.

[0029] Example 2 Based on Example 1, this embodiment, for example Figure 3 , 5 As shown, a support frame 4 is rotatably installed in the middle of the treatment chamber 3. The support frame 4 is a metal frame with a vertically set central axis and both ends fixed to the inner wall of the treatment chamber 3. Sludge-collecting plates 5 are symmetrically arranged at the top and bottom of the support frame 4. The sludge-collecting plates 5 are inclined plates made of wear-resistant rubber. A water-permeable filter element 13 is installed at the bottom of the inner cavity of the treatment chamber 3. The water-permeable filter element 13 is a PP melt-blown filter element, which can intercept sludge particles and filter sewage. The bottom of the treatment box 2 below the water-permeable filter element 13 is fixedly connected to a drainage hopper 23. The drainage hopper 23 is inverted cone shape, and a drainage valve is provided at the bottom of the cone to collect the filtered sewage and discharge it in a directional manner.

[0030] like Figure 4 , 5 As shown, rubber pads 8 are symmetrically fixed on both sides of the top of the permeable filter element 13 to provide a buffer and seal. Several sludge-dividing arc strips 9 are fixedly installed at equal intervals between the two rubber pads 8. The sludge-dividing arc strips 9 are arc-shaped stainless steel strips. A 35° inclined drainage cavity is formed between two adjacent sludge-dividing arc strips 9 and is distributed circumferentially along the axis of the treatment cavity 3 to facilitate rapid infiltration of sewage and retention of sludge. The sludge-collecting plate 5 has integrally formed scraping teeth 10. The scraping teeth 10 are conical teeth and extend into the drainage cavity. A spring 12 is connected between the inner side of the sludge-collecting plate 5 and the support frame 4. The spring 12 is a stainless steel compression spring. After installation, it is in a compressed state so that the sludge-collecting plate 5 always elastically presses against the surface of the sludge-dividing arc strips 9 to adapt to different thicknesses of sludge and ensure scraping fit.

[0031] like Figure 4 As shown, a baffle 6 is fixedly welded to the side of the sludge-collecting plate 5 away from the support frame 4. The baffle 6 and the sludge-collecting plate 5 enclose a sludge-gathering cavity 7, which is used to temporarily gather the scraped sludge. A guide slope 11 is provided on the side of the baffle 6 away from the sludge-collecting plate 5. The guide slope 11 has an inclination angle of 30° and a smooth surface, which can accurately guide the scattered sludge into the sludge-gathering cavity 7, reducing sludge loss.

[0032] Example 3 Based on Example 2, this embodiment, for example Figure 2, 5 As shown in Figure 6, the top side of the treatment box 2 is fixedly connected to the drying box 14, which is made of high-temperature resistant stainless steel. A rectangular transition port is formed at the connection between the drying box 14 and the treatment box 2. The transition port is rotatably connected to the rotating shaft 18 through the bearing. The rotating shaft 18 is a stainless steel round shaft. Several filter cotton plates 19 are evenly fixed on the outer circumference of the rotating shaft 18. The filter cotton plates 19 are rectangular plates with highly absorbent filter cotton attached to their surfaces. The side of the filter cotton plate 19 away from the rotating shaft 18 is attached to the surface of the receiving plate 16 for squeezing out sewage.

[0033] like Figure 6 As shown, an electric heating plate 15 is fixedly installed on one side of the inner wall of the drying oven 14. The electric heating plate 15 is a rectangular ceramic heating plate. A receiving plate 16 is horizontally fixed on one side of the top of the electric heating plate 15. The receiving plate 16 is a heat-conducting aluminum plate with a smooth surface. Several frustum-shaped sludge discharge holes 17 are evenly distributed through the receiving plate 16 to concentrate heat, disperse sludge, and prevent sludge blockage. An electric heating controller 20 is embedded on the outside of the drying oven 14. The electric heating controller 20 is a digital display temperature controller that is electrically connected to the electric heating plate 15. It can accurately control the heating temperature to adapt to the drying needs of sludge with different moisture contents.

[0034] like Figure 3 , 5 As shown, a first servo motor 21 and a second servo motor 22 are fixedly installed on one side of the outer wall of the processing box 2. The output shaft of the first servo motor 21 is connected to the central shaft of the support frame 4 through a coupling, driving the support frame 4 and the mud-collecting plate 5 to rotate. The output shaft of the second servo motor is connected to the rotating shaft 18, driving the filter cotton plate 19 to rotate.

[0035] The specific working principle is as follows: Wastewater buffering and guiding: The wastewater and sludge mixture to be treated is injected into the treatment chamber 3 from the top inlet of the treatment tank 2. When the mixture falls, it first hits the buffer plate 24. The buffer plate 24, together with the two side converging inclined plates 25, slows down and buffers the mixture, avoiding high-speed impact and splashing of sludge. The converging inclined plates 25 gather the mixture to both sides, and then guide it evenly through the guide channel 26 to enter the side above the sludge dividing arc strip 9, so as to achieve uniform distribution of the mixture and lay the foundation for subsequent solid-liquid separation. In the above steps, the sewage flows through the dredging channel 26 to the side above the sludge separating arc strip 9 and enters the sludge scraping chamber formed by it. The guiding position is precisely matched with the rotation trajectory of the support frame 4 and the sludge taking plate 5, so that the sewage and sludge always fall within the scraping path of the sludge taking plate 5. The wastewater and sludge mixture falls onto the sludge separating arc strip 9. The arc-shaped structure and inclined guiding cavity of the sludge separating arc strip 9 cause the wastewater to flow quickly into the gaps and seep down into the permeable filter element 13. The permeable filter element 13 precisely filters the wastewater and traps sludge particles. The filtered wastewater flows through the permeable filter element 13 into the drainage hopper 23. Opening the drainage valve allows for discharge that meets the standards. The sludge is trapped by the sludge separating arc strip 9 and the permeable filter element 13, achieving complete separation of wastewater and sludge.

[0036] The first servo motor 21 is started, which drives the support frame 4 to rotate. The support frame 4 drives the upper and lower symmetrical mud-collecting plates 5 to rotate synchronously. The elastic force of the spring 12 keeps the mud-collecting plate 5 in contact with the surface of the mud-dividing arc strip 9. The scraping teeth 10 on the mud-collecting plate 5 penetrate into the dredging cavity and scrape the intercepted sludge off the surface of the mud-dividing arc strip 9 and the water-permeable filter element 13. During the scraping process, the scattered sludge is guided to the mud-gathering cavity 7 by the guide slope 11 on the baffle 6, so as to realize the sludge concentration and agglomeration, avoid the sludge scattering and accumulation, and ensure the scraping efficiency.

[0037] The mud-collecting plate 5 rotates continuously, and the sludge in the mud-collecting chamber 7 rotates with the mud-collecting plate 5 to the transition port position. The centrifugal traction force throws the sludge into the drying box 14. During this process, the second servo motor 22 is started at the same time, driving the rotating shaft 18 to rotate. The rotating shaft 18 drives the filter cotton plate 19 to rotate at a constant speed. During the rotation, the filter cotton plate 19 intercepts the sludge thrown out by centrifugation and uses the highly absorbent filter cotton on the surface to absorb the residual water in the sludge, so as to achieve secondary dewatering of the sludge. When the filter cotton plate 19 rotates, it continuously taps the surface of the receiving plate 16, and evenly taps and disperses the dewatered sludge on the receiving plate 16 to avoid sludge clumping.

[0038] Furthermore, during the rotation of the filter cotton plate 19, it receives the sludge conveyed by the sludge-collecting plate 5, first adsorbing residual moisture to complete secondary dehydration, and then continuously tapping the surface of the receiving plate 16 as it rotates, so that the sludge is evenly spread and avoids local accumulation and clumping, creating good conditions for subsequent uniform drying. The spread sludge is spread evenly on the receiving plate 16, and with the help of the frustum-shaped sludge discharge hole 17, heat is gathered and sludge is diverted, so that heat is concentrated in the sludge layer and sludge particles are dispersed and fall. This not only greatly improves the uniformity of heating, shortens the drying cycle, and reduces energy consumption, but also prevents sludge from clogging the sludge discharge hole. After drying, the sludge is loose without hard lumps and has stable quality. Fine dried particles fall through the sludge discharge hole 17 to the bottom of the drying chamber 14, completing the drying process. If the sludge has a high moisture content, the heating temperature can be appropriately increased or the drying time can be extended to ensure that the drying meets the standards.

[0039] Start the electric heating controller 20, for example, set the heating temperature to 100℃. The electric heating controller 20 regulates the heating plate 15 to heat, and the heat is transferred to the receiving plate 16 through heat conduction. The sludge dispersed on the receiving plate 16 is dried by heat, and at the same time, the frustum-shaped sludge discharge hole 17 gathers the heat in the drying chamber 14, so that the heat is concentrated in the sludge drying area, improving the drying efficiency. During the sludge drying process, the fine drying particles pass through the sludge discharge hole 17 and fall to the bottom of the drying chamber 14, completing the drying process. If the sludge has a high moisture content, the heating temperature can be appropriately increased or the drying time can be extended to ensure that the drying meets the standards.

[0040] During the sludge drying process, open the discharge port at the bottom of the drying box 14 to collect the dried sludge, which can be directly used for landfill, composting or resource utilization; clean the permeable filter element 13 and filter cotton plate 19 regularly to avoid clogging and ensure long-term stable operation of the equipment.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An environmentally friendly wastewater sludge drying and treatment auxiliary device, comprising a support frame (1), characterized in that: A drying auxiliary component is provided on the support frame (1); The drying auxiliary component includes a processing box (2) fixedly installed on the support frame (1), and the processing box (2) has a processing cavity (3) inside. A support frame (4) is fixedly installed in the middle of the processing chamber (3), and sludge scraping plates (5) for scraping sludge are symmetrically arranged at the top and bottom of the support frame (4). The bottom of the inner cavity of the treatment chamber (3) is equipped with a permeable filter element (13) for filtering sewage. Rubber pads (8) are symmetrically fixed on both sides of the top of the permeable filter element (13). Several mud-dividing arc strips (9) are fixedly installed between two rubber pads (8), and an inclined dredging cavity is formed between two adjacent mud-dividing arc strips (9). The mud-collecting plate (5) has integrally formed scraping teeth (10), which extend into the dredging cavity. A spring (12) is connected between the mud-collecting plate (5) and the support frame (4). The spring (12) is used to make the mud-collecting plate (5) elastically press against the mud-dividing arc strip (9).

2. The environmentally friendly wastewater sludge drying auxiliary device according to claim 1, characterized in that: The drying auxiliary component also includes a baffle (6) fixedly connected to one side of the sludge-collecting plate (5), and the baffle (6) and the sludge-collecting plate (5) enclose a sludge-collecting cavity (7) for collecting sludge.

3. The environmentally friendly wastewater sludge drying auxiliary device according to claim 2, characterized in that: The baffle (6) has a guide slope (11) on the side away from the mud-collecting plate (5), which is used to guide the sludge into the mud-collecting chamber (7).

4. The environmentally friendly wastewater sludge drying auxiliary device according to claim 2, characterized in that: A drying box (14) is fixedly connected to the top side of the treatment box (2). The connection between the drying box (14) and the treatment box (2) forms a transition port. The centrifugal traction force generated by the rotation of the sludge-collecting plate (5) can throw the sludge into the drying box (14) through the transition port.

5. The environmentally friendly wastewater sludge drying auxiliary device according to claim 4, characterized in that: An electric heating plate (15) is fixedly installed on one side of the inner wall of the drying box (14), and a receiving plate (16) is fixedly installed on one side of the top of the electric heating plate (15). Several frustum-shaped mud discharge holes (17) are opened through the receiving plate (16). An electric heating controller (20) is embedded in the outside of the drying oven (14). The electric heating controller (20) is electrically connected to the electric heating plate (15) and is used to regulate the heating temperature of the electric heating plate (15).

6. The environmentally friendly wastewater sludge drying auxiliary device according to claim 5, characterized in that: A rotating shaft (18) is rotatably connected inside the transition port. Several filter cotton plates (19) are fixedly arranged on the outer circumference of the rotating shaft (18). The side of the filter cotton plate (19) away from the rotating shaft (18) is in contact with the surface of the receiving plate (16).

7. The environmentally friendly wastewater sludge drying auxiliary device according to claim 6, characterized in that: A first servo motor (21) and a second servo motor (22) are fixedly installed on one side of the outer wall of the processing box (2). The output shaft of the first servo motor (21) is connected to the support frame (4) for transmission, and the output shaft of the second servo motor (22) is connected to the rotating shaft (18) for transmission.

8. The environmentally friendly wastewater sludge drying auxiliary device according to claim 1, characterized in that: The bottom of the treatment box (2) is fixedly connected to a drain bucket (23), which is used to collect and discharge the sewage filtered by the water-permeable filter element (13).

9. The environmentally friendly wastewater sludge drying auxiliary device according to claim 1, characterized in that: A buffer plate (24) is fixedly installed at the top of the inner cavity of the processing chamber (3), and a gathering inclined plate (25) is fixedly installed symmetrically on both sides of the buffer plate (24).

10. The environmentally friendly wastewater sludge drying auxiliary device according to claim 9, characterized in that: The vertical cross-section of the buffer plate (24) and the two converging inclined plates (25) is combined to form a trapezoid. One of the converging inclined plates (25) has several drainage slots (26) on its surface. The drainage slots (26) are used to drain the sewage collected by the converging inclined plates (25) through the top side of the mud-dividing arc strip (9).

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