Graphite sewage treatment solid-liquid separator
By designing a reciprocating tilting mechanism and a pushing component, the problems of sieve plate hole blockage and discontinuous separation in traditional solid-liquid separators are solved. This achieves automatic cleaning of sieve plate holes and efficient extrusion of solid-liquid separation, ensuring the continuity and thoroughness of the separation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN HAORAN ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional solid-liquid separators suffer from problems such as easy clogging of the sieve plate holes, incomplete squeezing and drainage of solid waste, and discontinuous separation process.
The system employs a reciprocating tilting mechanism and a pushing assembly. Through the cooperation of the first and second screen plates, it achieves automatic cleaning of the screen plate holes and efficient compression of solid waste. The swinging mechanism enables continuous solid-liquid separation.
It effectively avoids clogging of the sieve plate holes, improves filtration efficiency, ensures the continuity and thoroughness of solid-liquid separation, and enhances the separation effect.
Smart Images
Figure CN224370873U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment, and in particular to a graphite wastewater treatment solid-liquid separator. Background Technology
[0002] Humans have been treating water for a long time. Physical methods include using filter media with different pore sizes to remove impurities from the water through adsorption or blocking. Among the adsorption methods, activated carbon is a more important one. The blocking method is to pass water through the filter media to prevent larger impurities from passing through, thereby obtaining cleaner water.
[0003] During use, traditional solid-liquid separators in existing technologies generally suffer from problems such as easy clogging of screen plate holes, incomplete squeezing and drainage of solid waste, and discontinuous separation process. For example, during filtration, solid particles often remain in the pores of the screen plate, resulting in a decrease in filtration efficiency. The squeezing components are mostly static structures, making it difficult to achieve intermittent and efficient squeezing of waste. Furthermore, when the screen plate is flipped, waste is prone to fall and accumulate, affecting the separation effect. Utility Model Content
[0004] In view of the problems existing in the above or prior art, such as easy clogging of the sieve plate holes, incomplete squeezing and drainage of solid waste, and discontinuous separation process, this utility model is proposed.
[0005] To solve the above technical problems, the present invention provides the following technical solution: including a reciprocating flipping mechanism, which includes a box body, a first sieve plate is inclinedly arranged on the upper part of the inner cavity of the box body, a second sieve plate is slidably arranged on the lower part of the first sieve plate, a cleaning component for cleaning the holes of the first sieve plate is arranged in the second sieve plate, and a pushing component for intermittently squeezing solid waste to make it fall out is arranged on one side of the cleaning component.
[0006] The swing mechanism includes a vertical connecting rod rotatably disposed at the lower middle of the second sieve plate. A first graphite plate and a second graphite plate are rotatably disposed at the lower end of the vertical connecting rod for alternating swinging to achieve solid-liquid separation. Push-pull components for pushing the first graphite plate and the second graphite plate to swing alternately are disposed at the middle of both ends of the first graphite plate.
[0007] As a preferred embodiment of the graphite wastewater treatment solid-liquid separator of this utility model, the cleaning component includes a plurality of limiting grooves symmetrically arranged between a plurality of holes on the lower surface of the first screen plate, and a cleaning pusher for inserting into the holes of the first screen plate for cleaning is slidably arranged between the plurality of limiting grooves, and a compression spring is fixedly provided at the lower end of the plurality of cleaning pushers to be fixedly connected to the bottom surface of the holes of the second screen plate and used to push the cleaning pusher to extend and retract.
[0008] As a preferred embodiment of the graphite wastewater treatment solid-liquid separator of this utility model, four L-shaped sliders are fixedly provided on both sides of the first screen plate and the second screen plate, which are symmetrical and oppositely arranged. The four L-shaped sliders are externally slidably connected to concave guide rails for limiting the sliding of the first screen plate and the second screen plate.
[0009] As a preferred embodiment of the graphite wastewater treatment solid-liquid separator of this utility model, the pushing assembly includes a cam group rotatably disposed in the inner cavity of the box and abutting against the lower surface of the second screen plate. A horizontal push rod is abutting against the cam group on the side with the lowest slope of the first screen plate. A push rod slide is slidably disposed at the end of the horizontal push rod away from the cam group for supporting the lateral movement of the cam group. A first collection chamber is fixedly disposed at the end of the push rod slide away from the cam group and is fixedly penetrated by the side wall of the box. T-shaped grooves are opened on both sides of the inner cavity of the first collection chamber. An extrusion plate is slidably disposed in the inner cavity of the T-shaped groove and fixedly connected to the horizontal push rod. A vertical fixing rod is abutting against the outer side of both ends of the first collection chamber and rotating with the end with the lowest slope of the second screen plate on one side surface of the extrusion plate.
[0010] As a preferred embodiment of the graphite wastewater treatment solid-liquid separator of this utility model, the first screen plate is slidably provided with vertical sliding grooves on both sides of the corners of the inner cavity of the box at the end away from the first collection chamber.
[0011] As a preferred embodiment of the graphite wastewater treatment solid-liquid separator of this utility model, the push-pull assembly includes a first inclined connecting rod fixedly disposed at the lower end of the first graphite plate and rotatably connected to the lower end of the vertical connecting rod, a horizontal connecting rod rotatably connected to the lower end of the first inclined connecting rod, and a second inclined connecting rod rotatably connected to the lower end of the second graphite plate at the end of the horizontal connecting rod away from the first inclined connecting rod.
[0012] As a preferred embodiment of the graphite wastewater treatment solid-liquid separator of this utility model, wherein: a side hanging plate is sleeved on the outside of the horizontal connecting rod and fixed to the side wall of the inner cavity of the box, the side hanging plate is used to support the entire mechanism and to abut and limit the first oblique connecting rod and the second oblique connecting rod when they are pulled laterally.
[0013] As a preferred embodiment of the graphite wastewater treatment solid-liquid separator of this utility model, the push-pull assembly further includes a second collection chamber fixedly disposed at the lower end of the first collection chamber and used for discharging solid waste.
[0014] The beneficial effects of this utility model of graphite wastewater treatment solid-liquid separator are as follows:
[0015] 1. Through the cooperation of the first screen plate, the second screen plate and the cleaning component in the reciprocating flipping mechanism, the holes of the screen plate are automatically cleaned to avoid clogging. The relative motion of the screen plate during flipping is used to achieve continuous automatic cleaning, which effectively improves the filtration efficiency.
[0016] 2. By utilizing the intermittent linkage between the cam assembly, the horizontal push rod, and the extrusion plate in the pressing assembly, efficient extrusion of solid waste is achieved. The rotation of the cam is converted into lateral thrust, realizing intermittent extrusion and thoroughly discharging the liquid from the solid waste, thus improving the solid-liquid separation effect.
[0017] 3. Through the linkage of the vertical connecting rod, the first graphite plate, the second graphite plate and the push-pull assembly in the swing mechanism, the continuous processing of solid-liquid separation is realized. The solid-liquid mixture falling onto the graphite plate is oscillated, and the liquid flows out through the holes of the graphite plate. The graphite plate is continuously oscillated by the power of the screen plate flipping, so as to realize the dynamic separation of the falling garbage and ensure the continuity of the entire processing process. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of a graphite wastewater treatment solid-liquid separator.
[0020] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the solid-liquid separator for graphite wastewater treatment.
[0021] Figure 3 This is a cross-sectional schematic diagram of the pushing component of a graphite wastewater treatment solid-liquid separator.
[0022] Figure 4 This is an enlarged schematic diagram of the cleaning component A of the graphite wastewater treatment solid-liquid separator.
[0023] Figure 5 This is a side-view top view of the positions of the two graphite plates in a graphite wastewater treatment solid-liquid separator.
[0024] Figure 6 This is an enlarged schematic diagram of part B of the push-pull assembly of the graphite wastewater treatment solid-liquid separator.
[0025] In the diagram: 10. Box body; 11. First sieve plate; 12. Second sieve plate; 13. Cleaning assembly; 131. Limiting slide groove; 132. Cleaning push block; 133. Compression spring; 134. L-shaped slider; 135. Concave guide rail; 14. Pushing assembly; 141. Cam assembly; 142. Horizontal push rod; 143. Push rod slide block; 144. First collection chamber; 145. T-shaped slide groove; 146. Extrusion plate; 147. Vertical fixing rod; 15. Vertical slide groove; 20. Vertical connecting rod; 21. First graphite plate; 22. Second graphite plate; 23. Push-pull assembly; 231. First diagonal connecting rod; 232. Horizontal connecting rod; 233. Second diagonal connecting rod; 234. Side hanging plate; 235. Second collection chamber. Detailed Implementation
[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0027] Example 1, referring to Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a graphite wastewater treatment solid-liquid separator, which can achieve the effect of cleaning the holes of the screen plate and squeezing out solid waste when the screen plate rotates up and down to perform solid-liquid separation. It includes a reciprocating flipping mechanism, which includes a housing 10. A first screen plate 11 is installed at an inclination of 10° on the upper part of the inner cavity of the housing 10. A second screen plate 12 is slidably arranged on the lower part of the first screen plate 11, and the arrangement of the second screen plate 12 is the same as that of the first screen plate 11. It should be noted that the number of holes in the second screen plate 12 is twice that of the first screen plate 11. When the second screen plate 12 and the first screen plate 11 slide misalign, the holes of the second screen plate 12 still align with the holes of the first screen plate 11, so as not to affect the filtration effect of the first screen plate 11. Even if the cleaning component 13 for cleaning the holes of the first screen plate 11 in the second screen plate 12 is not inserted into the first screen plate 11, the first screen plate 11 can still filter water through the holes on the second screen plate 12.
[0028] Specifically, the cleaning component 13 includes several limiting grooves 131 formed between several holes on the lower surface of the first screen plate 11. These limiting grooves 131 are symmetrical to each other and are arranged axially along the holes of the first screen plate 11 from the lowest point to the highest point. A cleaning pusher 132 is slidably installed between each of the limiting grooves 131, and the cleaning pusher 132 can slide out of the limiting groove 131 and insert into the holes of the first screen plate 11 for cleaning. Its diameter is the same as the diameter of the holes of the first screen plate 11. A compression spring 133 is fixedly connected to the lower end of each of the cleaning pushers 132. The end is fixedly connected to the bottom surface of the hole in the second screen plate 12, and is used to push the cleaning push block 132 to perform telescopic movement. On the side walls of both sides of the first screen plate 11 and the second screen plate 12, L-shaped sliders 134 are fixedly installed, and the L-shaped sliders 134 on the same side of the first screen plate 11 and the second screen plate 12 are arranged oppositely. At the same time, the L-shaped sliders 134 on both sides are arranged symmetrically. On the outside of these four L-shaped sliders 134, concave guide rails 135 are slidably inserted into the outside of the L-shaped sliders 134 located on the same side and arranged oppositely. The concave guide rails 135 can limit and guide the first screen plate 11 and the second screen plate 12 when they slide.
[0029] Furthermore, a pushing component 14 is provided on one side of the cleaning component 13, which can intermittently and laterally reciprocate to squeeze solid waste and squeeze out the squeezed solid waste. The pushing component 14 includes a cam group 141, which is rotatably disposed in the inner cavity of the box 10 and abuts against the lower surface of the second screen plate 12. A horizontal push rod 142 is abutted at the position where the cam group 141 is located on the side with the lowest slope of the first screen plate 11. The end of the horizontal push rod 142 away from the cam group 141 is slidably mounted on the push rod slide 143.
[0030] The push rod slide 143 is used to support the horizontal push rod 142 to move laterally. The end of the push rod slide 143 away from the cam group 141 is fixedly connected to the first collection chamber 144. The first collection chamber 144 is fixedly penetrated by the side wall of the box 10 and the inner cavity is interconnected. On both sides of the inner cavity of the first collection chamber 144, T-shaped grooves 145 are symmetrically arranged. In the inner cavity of the T-shaped grooves 145, extrusion plates 146 are slidably installed. The extrusion plates 146 are fixedly connected to the horizontal push rod 142. The surface of the extrusion plates 146 located on one side of the cam group 141 abuts against the vertical fixing rod 147.
[0031] Preferably, the vertical fixing rod 147 is fixedly installed on the outer side of both ends of the first collection chamber 144 and is connected to the end of the second screen plate 12 with the lowest slope. Thus, when the second screen plate 12 is pushed by the cam group 141, it can rotate around the upper end of the vertical fixing rod 147. The cam group 141 is connected to a Y132M-4 type three-phase asynchronous motor. At the same time, a return spring is set in the inner cavity of the T-shaped slide groove 145 to realize the reset of the extrusion plate 146.
[0032] It should be noted that the two sides of the first screen plate 11 away from the first collection chamber 144 are slidably disposed in the vertical grooves 15 opened at the corners of the inner cavity of the box body 10. Thus, when the second screen plate 12 is pushed by the cam group 141 to rotate around the upper end of the vertical fixed rod 147, it can drive the first screen plate 11 to rotate synchronously. Through the limiting effect of the vertical grooves 15 on the first screen plate 11, the first screen plate 11 rotates and slides against the second screen plate 12. This causes the cleaning pusher 132 to slide out from the limiting groove 131 and insert into the hole of the first screen plate 11, thereby cleaning the hole of the first screen plate 11. At the same time, as the tilt angle of the first screen plate 11 increases, solid waste will slide down the tilt surface of the first screen plate 11 into the interior of the first collection chamber 144.
[0033] When in use, when sewage enters the tank 10, it first falls onto the first screen plate 11. The liquid part flows down through the holes of the first screen plate 11 and the second screen plate 12, while the solid waste remains on the first screen plate 11. At this time, the output end of the asynchronous motor drives the cam group 141 to rotate. The rotation of the cam group 141 will push the second screen plate 12 to rotate around the upper end of the vertical fixed rod 147. When the second screen plate 12 rotates, it will drive the first screen plate 11 to rotate synchronously. During the rotation process, the first screen plate 11 and the second screen plate 12 slide relative to each other.
[0034] As the first sieve plate 11 and the second sieve plate 12 slide relative to each other, the cleaning push block 132, which was originally located in the limiting groove 131, slides out of the limiting groove 131 and inserts into the hole of the first sieve plate 11 under the action of the compression spring 133, to clean the solid particles in the hole and prevent the hole from being blocked.
[0035] Meanwhile, as the tilt angle of the first screen plate 11 increases, solid waste will slide down the inclined surface of the first screen plate 11 into the first collection chamber 144. Then, when the cam assembly 141 abuts against the horizontal push rod 142, it will push the horizontal push rod 142 to slide laterally on the push rod slide block 143. The horizontal push rod 142 drives the extrusion plate 146 to slide in the T-shaped slide groove 145, extruding the solid waste in the first collection chamber 144 and further squeezing out the liquid, thereby improving the solid-liquid separation effect. The extruded solid waste is then discharged from the outlet of the first collection chamber 144.
[0036] Example 2, refer to Figures 4-6This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a swing mechanism for a graphite wastewater treatment solid-liquid separator, which solves the problem of solid waste falling when the two screen plates are intersected. The swing mechanism includes a vertical connecting rod 20 rotatably disposed at the lower middle of the second screen plate 12 via a movable seat. The lower end of the vertical connecting rod 20 is provided with a first graphite plate 21 and a second graphite plate 22. The first graphite plate 21 and the second graphite plate 22 are oscillating vertically at both ends through a rotating shaft disposed through their middle parts, thereby achieving solid-liquid separation of the liquid and solid waste falling on the first graphite plate 21 and the second graphite plate 22. Furthermore, push-pull components 23 are provided at the middle of both ends of the first graphite plate 21 to push the first graphite plate 21 and the second graphite plate 22 to oscillate vertically.
[0037] Specifically, the push-pull assembly 23 includes a first inclined connecting rod 231 fixedly mounted on the lower side of the first graphite plate 21 via a movable seat. The first inclined connecting rod 231 is rotatably connected to the lower end of the vertical connecting rod 20, so that when the vertical connecting rod 20 moves downward with the second screen plate 12, it can push one end of the first graphite plate 21 to rotate downward, thereby causing the other end to flip upward. The lower end of the first inclined connecting rod 231 is rotatably connected to the horizontal connecting rod 232, and the end of the horizontal connecting rod 232 away from the first inclined connecting rod 231 is rotatably connected to the second inclined connecting rod 233. The upper end of the second inclined connecting rod 233 is rotatably connected to the lower end of the second graphite plate 22 via a movable seat. Thus, when the first inclined connecting rod 231 flips downward, it will push the horizontal connecting rod 232, which in turn pushes the second inclined connecting rod 233, causing the second inclined connecting rod 233 to push the second graphite plate 22 to flip upward, thereby realizing the alternating up-and-down swing of the first graphite plate 21 and the second graphite plate 22.
[0038] A side hanging plate 234 is sleeved on the outside of the horizontal connecting rod 232, and the side hanging plate 234 is fixedly connected to the inner cavity side wall of the housing 10. At the same time, the side hanging plate 234 is used to support the entire mechanism, and the two ends of the cavity at its lower end abut against the first oblique connecting rod 231 and the second oblique connecting rod 233 respectively to limit the movement. This limits the movement when the first oblique connecting rod 231 is pushed to drive the second oblique connecting rod 233 to flip the second graphite plate 22 upward, so that the first graphite plate 21, the second graphite plate 22 and the horizontal connecting rod 232 can all move in the cavity at the lower end of the side hanging plate 234.
[0039] A second collection chamber 235 for discharging solid waste is fixedly installed at the lower end of the first collection chamber 144. When the first graphite plate 21 and the second graphite plate 22 swing alternately, the solid waste on them will slide into the second collection chamber 235 for collection and discharge.
[0040] During use, solid waste may fall onto the first graphite plate 21 and the second graphite plate 22 during the relative sliding process of the first screen plate 11 and the second screen plate 12. When the second screen plate 12 rotates around the upper end of the vertical fixed rod 147 under the push of the cam group 141, the vertical connecting rod 20 will move downward synchronously with the second screen plate 12. The downward movement of the vertical connecting rod 20 will drive the first inclined connecting rod 231 to move obliquely downward. When the first inclined connecting rod 231 is pushed by the vertical connecting rod 20, it will cause the first graphite plate 21 to rotate around the central pivot, causing one end of the first graphite plate 21 to flip downward and the other end to flip upward. When the first inclined connecting rod 231 moves obliquely downward, it will push the horizontal connecting rod 232 to slide laterally in the cavity at the lower end of the side hanging plate 234. The sliding of the horizontal connecting rod 232 will drive the second inclined connecting rod 233 to move obliquely upward.
[0041] When the second oblique link 233 is pushed by the horizontal link 232, the second graphite plate 22 will rotate around the central axis. Furthermore, due to the linkage between the first oblique link 231 and the second oblique link 233, the rotation direction of the second graphite plate 22 is opposite to that of the first graphite plate 21. That is, when one end of the first graphite plate 21 flips downward, the corresponding end of the second graphite plate 22 flips upward, thereby realizing the alternating up-and-down swinging of the first graphite plate 21 and the second graphite plate 22.
[0042] During the alternating up-and-down swinging of the first graphite plate 21 and the second graphite plate 22, the liquid portion will flow downward through the holes or gaps in the graphite plates, and the solid waste will gradually slide down to the second collection chamber 235 below for collection under the action of gravity and swinging, thereby realizing continuous processing of the falling waste and solving the problem of solid waste falling when the two screen plates are crossed.
[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A graphite-based solid-liquid separator for wastewater treatment, characterized in that: include, The reciprocating flipping mechanism includes a box (10), a first sieve plate (11) is inclinedly arranged on the upper part of the inner cavity of the box (10), a second sieve plate (12) is slidably arranged on the lower part of the first sieve plate (11), a cleaning component (13) for cleaning the holes of the first sieve plate (11) is provided in the second sieve plate (12), and a pushing component (14) for intermittently squeezing solid waste to make it fall out is provided on one side of the cleaning component (13); The swing mechanism includes a vertical connecting rod (20) rotatably disposed at the lower middle of the second sieve plate (12). The lower end of the vertical connecting rod (20) is rotatably provided with a first graphite plate (21) and a second graphite plate (22) for alternating swinging to achieve solid-liquid separation. The middle of both ends of the first graphite plate (21) is provided with push-pull components (23) for pushing the first graphite plate (21) and the second graphite plate (22) to swing alternately.
2. The graphite wastewater treatment solid-liquid separator as described in claim 1, characterized in that: The cleaning assembly (13) includes several limiting grooves (131) that are symmetrically arranged between several holes on the lower surface of the first screen plate (11). Each of the several limiting grooves (131) is slidably provided with a cleaning push block (132) for inserting into the holes of the first screen plate (11) for cleaning. Each of the several cleaning push blocks (132) is fixedly provided with a compression spring (133) at its lower end, which is fixedly connected to the bottom surface of the holes of the second screen plate (12) and is used to push the cleaning push block (132) to extend and retract.
3. The graphite wastewater treatment solid-liquid separator as described in claim 1, characterized in that: The first sieve plate (11) and the second sieve plate (12) are each fixed with four L-shaped sliders (134) that are symmetrical and opposite to each other. The four L-shaped sliders (134) are slidably inserted with concave guide rails (135) for limiting the sliding of the first sieve plate (11) and the second sieve plate (12).
4. The graphite wastewater treatment solid-liquid separator as described in claim 1, characterized in that: The pushing assembly (14) includes a cam assembly (141) rotatably disposed in the inner cavity of the housing (10) and abutting against the lower surface of the second screen plate (12). The cam assembly (141) is located on the side with the lowest slope of the first screen plate (11) and abuts against a horizontal push rod (142). A push rod slide (143) for supporting the lateral movement of the cam assembly (141) is slidably disposed at the end of the horizontal push rod (142) away from the cam assembly (141). The end of the push rod slide (143) away from the cam assembly (141) is fixed to the housing. (10) A first collection chamber (144) is fixedly installed through the side wall. T-shaped grooves (145) are provided on both sides of the inner cavity of the first collection chamber (144). A pressing plate (146) fixed to the horizontal push rod (142) is slidably installed in the inner cavity of the T-shaped groove (145). The pressing plate (146) is located on one side of the cam group (141) and abuts against a vertical fixing rod (147) fixed on the outer side of both ends of the first collection chamber (144) and connected to the lowest slope end of the second screen plate (12).
5. The graphite wastewater treatment solid-liquid separator as described in claim 1, characterized in that: The first sieve plate (11) has vertical grooves (15) slidably provided on both sides of the end away from the first collection bin (144) at the corners of the inner cavity of the box body (10).
6. The graphite wastewater treatment solid-liquid separator as described in claim 5, characterized in that: The push-pull assembly (23) includes a first inclined connecting rod (231) fixedly disposed at the lower end of the first graphite plate (21) and rotatably connected to the lower end of the vertical connecting rod (20). A horizontal connecting rod (232) is rotatably connected to the lower end of the first inclined connecting rod (231). A second inclined connecting rod (233) is rotatably connected to the lower end of the second graphite plate (22) at the end of the horizontal connecting rod (232) away from the first inclined connecting rod (231).
7. The graphite wastewater treatment solid-liquid separator as described in claim 6, characterized in that: The transverse connecting rod (232) is fitted with a side hanging plate (234) that is fixed to the inner wall of the box (10). The side hanging plate (234) is used to support the entire mechanism and to abut and limit the first diagonal connecting rod (231) and the second diagonal connecting rod (233) when they are pulled laterally.
8. The graphite wastewater treatment solid-liquid separator as described in claim 6, characterized in that: The push-pull assembly (23) also includes a second collection chamber (235) fixedly disposed at the lower end of the first collection chamber (144) and used for discharging solid waste.