Solid-liquid separation device for environmental engineering

Abstract

The utility model relates to the technical field of environmental engineering solid-liquid separation, and discloses an environmental engineering solid-liquid separation device which comprises an outer barrel and an inner barrel, the outer barrel is provided with a rotary driving assembly and a lifting assembly, the rotary driving assembly is arranged at the bottom of the interior of the outer barrel, the rotary driving assembly comprises a driving source and a rotary power rod, an output part of the driving source is in transmission connection with the rotary power rod, and a plurality of clamping blocks are arranged on the outer wall of the rotary power rod; the lifting assembly comprises a plurality of lifting rods, each lifting rod comprises a first fixed part and a first movable part, a bearing plate is arranged at the end, away from the first fixed part, of each first movable part, and the bearing plates are used for bearing the bottom of the inner barrel; the inner barrel can be connected with the interior of the outer barrel in a sleeved mode, liquid drainage through holes which are evenly distributed are formed in the side wall of the inner barrel, a clamping hole is formed in the bottom of the inner barrel, and the clamping hole can be connected with the rotating power rod in a clamped mode. The solid-liquid separation device is used for solving the problem that a related solid-liquid separation device cannot adapt to assembly line type operation, and the treatment efficiency of waste materials is improved.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology in environmental engineering, and in particular to a solid-liquid separation device for environmental engineering. Background Technology

[0002] In modern society, the importance of environmental engineering is increasingly prominent. The disposal of solid waste is becoming increasingly challenging, with electronic waste, scrap metal, and construction waste piling up, not only occupying valuable land but also potentially leaching harmful substances and polluting the surrounding environment. Traditional, single-method treatment is no longer sufficient to address this severe situation, and environmental standards are becoming increasingly stringent. Therefore, solid-liquid separation devices have emerged. In the cleaning and dismantling stages of waste materials, these devices can effectively separate mixed solids and liquids, thereby sorting out metals and plastics with recycling value. This reduces the amount of waste sent to landfills and incinerators, taps into the potential for resource recycling, and lays a solid foundation for a green circular economy.

[0003] However, the current solid-liquid separation devices are cumbersome to operate when removing the separated materials, making them unsuitable for assembly line operations and reducing the efficiency of waste material processing. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an environmental engineering solid-liquid separation device to solve the problem that related solid-liquid separation devices cannot adapt to assembly line operations and improve the processing efficiency of waste materials.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An environmental engineering solid-liquid separation device includes: an outer tank and an inner tank;

[0007] The outer tub is equipped with a rotary drive assembly and a lifting assembly. The rotary drive assembly is located at the bottom inside the outer tub and includes a drive source and a rotary power rod. The output of the drive source is connected to the rotary power rod. The outer wall of the rotary power rod is provided with multiple locking blocks. The lifting assembly includes multiple lifting rods. Each lifting rod includes a first fixed part and a first movable part. The first fixed part of the lifting rod is connected to the inner wall of the outer tub and extends along the direction of gravity. The first movable part is located below the first fixed part and can extend and retract along the extension direction of the first fixed part of the lifting rod. A support plate is provided at the end of the first movable part away from the first fixed part. The support plate is used to support the bottom of the inner tub.

[0008] The inner tub can be fitted inside the outer tub. The side wall of the inner tub is provided with evenly distributed drainage holes, and the bottom of the inner tub is provided with snap-fit ​​holes that can be engaged with the rotating power rod.

[0009] Further, the bottom of the outer barrel is further provided with a liquid storage assembly, the liquid storage assembly comprises a partition plate, a filter layer and a liquid discharge pipe, the partition plate is connected with the inner side wall of the outer barrel and forms a liquid storage cavity with the bottom wall of the outer barrel, the partition plate is provided with uniformly distributed liquid permeation through holes, the filter layer is laid on the partition plate, and the liquid discharge pipe is arranged from the cavity wall of the liquid storage cavity to the outside of the outer barrel.

[0010] Further, the clamping block can be elastically stretched and contracted, the clamping block is further provided with a sliding guide surface, the guide surface is used for guiding the clamping block when the clamping block is subjected to the interaction force in the direction of gravity, so that the clamping block can be elastically contracted.

[0011] Further, the rotating power rod comprises a second fixed part and a second moving part, the second fixed part is located below the second moving part, and the second moving part can be stretched and contracted along the extension direction of the second fixed part.

[0012] Further, the outer wall of the bottom of the inner barrel is provided with a plurality of supporting grooves, and the plurality of supporting grooves are correspondingly clamped with the plurality of supporting plates.

[0013] Further, the liquid discharge pipe is further connected with a water pump.

[0014] Further, the open end of the outer barrel is further provided with an opening and closing assembly, the opening and closing assembly comprises an opening and closing cover and a rotating shaft, the opening and closing cover is pivoted with the outer barrel through the rotating shaft, so that the opening and closing cover can close the open end of the outer barrel.

[0015] Further, the outer barrel is further provided with an electric control box, the driving source, the lifting assembly, the rotating power rod and the water pump are all electrically connected with the electric control box.

[0016] Further, the open end of the inner barrel is provided with a stress ring, the stress ring extends around the circumference of the open end of the inner barrel and is used for abutting against the top of the outer barrel.

[0017] Further, the opening and closing cover is a component made of transparent material.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The rotating drive assembly at the bottom of the outer drum, through the transmission between the drive source and the rotating power rod, drives the inner drum, which has locking holes, to rotate at high speed, achieving efficient solid-liquid separation. Compared with traditional static separation, this greatly improves the separation speed and effect. Multiple locking blocks on the outer wall of the rotating power rod ensure a stable connection between the rotating power rod and the locking holes. Simultaneously, the first fixed part of the lifting rod is fixed to the inner wall of the outer drum, and the support plate at the end of the first moving part is used to support the inner drum. Drainage holes on the side wall of the inner drum allow the separated liquid to drain promptly. The first moving part extends and retracts as needed to achieve the transmission locking or separation of the inner drum and the rotating power rod. The lifting assembly not only stably supports the inner drum but also adjusts its height as needed, making the installation or removal of the inner drum easier. During assembly line operation, once the inner drum completes solid-liquid separation, the lifting assembly promptly lifts the inner drum, and the worker immediately replaces it with a new inner drum. The entire process is seamlessly integrated, greatly improving the efficiency of waste material processing. Attached Figure Description

[0020] Figure 1 This is a side view of a solid-liquid separation device for environmental engineering according to this application.

[0021] Figure 2 This is a cross-sectional structural schematic diagram of an environmental engineering solid-liquid separation device according to this application;

[0022] Figure 3 This is another cross-sectional structural schematic diagram of an environmental engineering solid-liquid separation device according to this application;

[0023] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0024] Figure 5 for Figure 3 A magnified view of a portion of point B in the middle.

[0025] In the diagram: 1. Outer tub; 11. Rotary drive assembly; 111. Drive source; 112. Rotary power rod; 1121. Snap-fit ​​block; 1122. Sliding guide surface; 1123. Second fixed part; 1124. Second moving part; 12. Lifting assembly; 121. Lifting rod; 1211. First fixed part; 1212. First moving part; 1213. Support plate; 13. Liquid storage assembly; 131. Partition plate; 132. Drain pipe; 133. Liquid storage chamber; 14. Electrical control box; 15. Force ring; 2. Inner tub; 21. Drain through hole; 22. Snap-fit ​​hole; 3. Opening and closing assembly; 31. Opening and closing cover; 32. Rotating shaft. Detailed Implementation

[0026] The utility model is further described below in combination with the drawings and specific embodiments. It should be noted that the embodiments described below or the technical features between them can be combined to form new embodiments without conflict.

[0027] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar terms are used for explanation only and are not intended to limit the present utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] Referring to Figures 1-5 , the environmental engineering solid-liquid separation device provided in the application comprises an outer barrel 1 and an inner barrel 2.

[0030] As shown in Figure 3 and Figure 4 , the outer barrel 1 is provided with a rotary driving assembly 11 and a lifting assembly 12. The rotary driving assembly 11 is arranged at the bottom of the inner part of the outer barrel 1. The rotary driving assembly 11 comprises a driving source 111 and a rotary power rod 112. The output part of the driving source 111 is in transmission connection with the rotary power rod 112. The outer wall of the rotary power rod 112 is provided with a plurality of clamping blocks 1121. The lifting assembly 12 comprises a plurality of lifting rods 121. The lifting rod 121 comprises a first fixed part 1211 and a first movable part 1212. The first fixed part 1211 of the lifting rod 121 is connected with the inner wall of the outer barrel 1 and extends along the direction of gravity. The first movable part 1212 is located below the first fixed part 1211 and can stretch and contract along the extension direction of the first fixed part 1211 of the lifting rod 121. The end of the first movable part 1212 away from the first fixed part 1211 is provided with a supporting plate 1213. The supporting plate 1213 is used for supporting the bottom of the inner barrel 2.

[0031] The inner barrel 2 can be sleeved in the inner part of the outer barrel 1. The side wall of the inner barrel 2 is provided with uniformly distributed liquid discharge through holes 21. The bottom of the inner barrel 2 is provided with a clamping hole 22. The clamping hole 22 can be clamped with the rotary power rod 112.

[0032] Specifically, the rotating drive assembly 11 at the bottom of the outer barrel 1 drives the inner barrel 2 provided with the clamping hole 22 to rotate at high speed by the transmission cooperation of the driving source 111 and the rotating power rod 112, realizing efficient solid-liquid separation, greatly improving the separation speed and effect compared with traditional static separation; the multiple clamping blocks 1121 on the outer wall of the rotating power rod 112 ensure the stable connection of the rotating power rod 112 and the clamping hole 22. At the same time, the first fixed part 1211 of the lifting rod 121 is fixed to the inner wall of the outer barrel 1, the supporting plate 1213 at the end of the first moving part 1212 is used to support the inner barrel 2, the liquid discharge through hole 21 on the side wall of the inner barrel 2 allows the separated liquid to be discharged in time, and the first moving part 1212 is telescopic as needed to realize the transmission clamping or separation of the inner barrel 2 and the rotating power rod 112. The lifting assembly 12 can not only stably support the inner barrel 2, but also adjust the height of the inner barrel 2 as needed, so that the operation of installing or dismounting the inner barrel 2 is more convenient; during the assembly line operation, once the inner barrel 2 completes the solid-liquid separation, the lifting assembly 12 lifts the inner barrel 2 in time, and the worker immediately replaces a new inner barrel 2, so that the whole process is closely connected, and the processing efficiency of the waste materials is greatly improved.

[0033] The use process is: first, place the inner barrel 2 on the supporting plate 1213, lower the inner barrel 2 to the clamping hole 22 and the rotating power rod 112 by the lifting assembly 12, and after the supporting plate 1213 is separated from the low wall of the inner barrel 2, start the driving source 111 to make the rotating power rod 112 rotate and drive the inner barrel 2 to rotate, after completing the solid-liquid separation, close the driving source 111 in the rotating drive assembly 11, and the moving part of the lifting assembly 12 is retracted to make the inner barrel 2 rise, so that the worker can take away the inner barrel 2 after solid-liquid separation for subsequent assembly line operation, and continue to place the next inner barrel 2 for solid-liquid separation operation.

[0034] Further, as shown in Figure 2 the bottom of the outer barrel 1 is also provided with a liquid storage assembly 13, the liquid storage assembly 13 includes a partition plate 131, a filter layer and a liquid discharge pipe 132, the partition plate 131 is connected with the inner side wall of the outer barrel 1 and forms a liquid storage cavity 133 with the bottom wall of the outer barrel 1, the partition plate 131 is provided with uniformly distributed liquid permeation through holes, the filter layer is laid on the partition plate 131, and the liquid discharge pipe 132 is provided from the cavity wall of the liquid storage cavity 133 to the outside of the outer barrel 1.

[0035] Specifically, the partition plate 131 is connected with the inner side wall of the outer barrel 1 and surrounds a liquid storage cavity 133 with the bottom wall of the outer barrel 1. The partition plate 131 is distributed with liquid permeation through holes, which can smoothly flow the separated liquid into the liquid storage cavity 133. The filter layer is also laid on the partition plate 131, which will intercept the fine solid impurities that may be mixed when the liquid passes through the liquid permeation through holes, further purifying the liquid. And the liquid discharge pipe 132 is responsible for discharging the filtered and temporarily stored liquid in the liquid storage cavity 133 out of the outer barrel 1.

[0036] Further, the clamping block 1121 can elastically stretch and contract, and the clamping block 1121 is further provided with a sliding guide surface 1122. The guide surface is used to guide the clamping block 1121 when the clamping block 1121 is subjected to an interaction force in the direction of gravity, so that the clamping block 1121 can elastically stretch and contract in a predetermined direction and path.

[0037] Specifically, in actual operation, when the clamping block 1121 is subjected to an interaction force in the direction of gravity, such as a downward pressure or an upward pulling force generated when the clamping hole 22 of the inner barrel 2 is clamped or separated from the rotating power rod 112, the sliding guide surface 1122 can guide the clamping block 1121 to move in a predetermined direction and path, and then smoothly realize elastic stretching and contraction, so that the clamping hole 22 is clamped or separated from the rotating power rod 112. This design has the following advantages: on the one hand, the elastic stretching and contraction endows the clamping block 1121 with buffering capacity, so that the shaking and impact force during assembly or disassembly of the inner barrel 2 can be buffered, preventing the components from being damaged due to rigid collision. On the other hand, the sliding guide surface 1122 makes the elastic stretching and contraction of the clamping block 1121 more controllable and orderly, reduces the risk of accidental separation due to uneven force or direction deviation, ensures the stable connection of the clamping block 1121 and the clamping hole 22, and maintains the stable and reliable operation state of the entire device.

[0038] Further, the rotating power rod 112 includes a second fixed part 1123 and a second movable part 1124, the second fixed part 1123 is located below the second movable part 1124, and the second movable part 1124 can stretch and contract along the extension direction of the second fixed part 1123.

[0039] The specific operation process is as follows: first, place the inner barrel 2 on the supporting plate 1213, then start the lifting assembly 12 to drive the inner barrel 2 to descend until the inner barrel 2 approaches the rotating power rod 112. Then, the second movable part 1124 of the rotating power rod 112 begins to rise and is embedded in the clamping hole 22 at the bottom of the inner barrel 2, achieving stable clamping, and at the same time, the bottom of the inner barrel 2 is separated from the supporting plate 1213. Then, the driving source 111 of the rotating drive assembly 11 is started to make the rotating power rod 112 rotate and drive the inner barrel 2 to rotate together, and under the action of centrifugal force, solid-liquid can be quickly separated. When the solid-liquid separation task is completed, the driving source 111 is turned off, and the moving part of the lifting assembly 12 rises immediately, first disconnecting the inner barrel 2 from the rotating drive assembly 11, and then continuing to lift the inner barrel 2 to an appropriate height, facilitating workers to easily take it away, and making good connection for the subsequent processing process.

[0040] Further, the outer wall of the bottom of the inner barrel 2 is provided with a plurality of supporting grooves, and the plurality of supporting grooves are clamped in one-to-one correspondence with the plurality of supporting plates 1213.

[0041] Specifically, the design has the following advantages: on the one hand, the one-to-one clamping mode makes the positioning of the inner barrel 2 more accurate when placed, avoiding the offset and shaking of the inner barrel 2, making the subsequent docking of the inner barrel 2 and the rotating power rod 112 more smooth, and reducing the probability of clamping failure due to position deviation; on the other hand, the multiple supporting points jointly bear the weight of the inner barrel 2 and the internal materials, dispersing the stress and enhancing the stability of the inner barrel 2 when placed, which helps the long-term stable operation of the entire solid-liquid separation device and reduces the risk of damage due to uneven stress.

[0042] Further, the drain pipe 132 is also connected with a water pump.

[0043] Specifically, the drain pipe 132 is responsible for leading out the liquid temporarily stored in the liquid storage chamber 133 after solid-liquid separation, and the water pump connected therewith plays a role of power delivery. After the water pump is started, it can provide additional suction and pressure for the flow of liquid, overcome pipeline resistance, liquid level difference and other hindering factors, so that the liquid can be discharged from the device more quickly and smoothly and transported to the subsequent processing link or storage container. This design not only improves the liquid discharge efficiency of the entire solid-liquid separation device, avoids secondary pollution that may be caused by long-term accumulation of liquid in the device, but also makes the connection of the entire solid-liquid separation and subsequent processing process more efficient.

[0044] Further, the open end of the outer barrel 1 is also provided with an opening and closing assembly 3, which includes an opening and closing cover 31 and a rotating shaft 32. The opening and closing cover 31 is pivoted to the outer barrel 1 through the rotating shaft 32, so that the opening and closing cover 31 can close the open end of the outer barrel 1.

[0045] Specifically, when the solid-liquid separation device is running, the opening and closing cover 31 closes the opening of the outer barrel 1, which can effectively prevent the internal liquid and solid materials from splashing out, avoid the pollution of the surrounding environment caused by the scattering of materials, and ensure the cleanliness and safety of the working area. Moreover, when the device needs to be overhauled, cleaned, or materials are put into the inner barrel 2, the outer barrel 1 can also be quickly opened, which is extremely convenient to operate, saves manpower and material resources, and ensures the continuity of the overall operation process.

[0046] Further, the outer barrel 1 is also provided with an electric control box 14, and the driving source 111, the lifting assembly 12, the rotating power rod 112 and the water pump are electrically connected with the electric control box 14.

[0047] Specifically, through the electric control box 14, the operator can control the rotating speed of the driving source 111 without manually adjusting each component one by one, so that the rotating power rod 112 drives the inner barrel 2 to rotate as needed to achieve solid-liquid separation of different intensities; can also control the lifting action of the lifting assembly 12 to flexibly adjust the position of the inner barrel 2; and can also control the start and stop of the water pump and the pumping rate. On the one hand, this design improves the convenience and accuracy of operation, reduces the complexity and labor intensity of manual operation; on the other hand, centralized electric control management helps the components to work together, reduces the faults caused by human operation errors, and optimizes the running stability of the entire solid-liquid separation device.

[0048] Further, the opening end of the inner barrel 2 is provided with a force ring 15, which extends around the circumference of the opening end of the inner barrel 2 and is used to abut against the top of the outer barrel 1.

[0049] Specifically, when the worker takes away the inner barrel 2 after completing the solid-liquid separation, the force ring 15 provides a convenient force point, making it easier for the hand to exert force and quickly lift the inner barrel 2. Similarly, when placing the next inner barrel 2, it is also easier to align the position with the help of the force ring 15, making the operation of replacing the inner barrel 2 more smooth and efficient.

[0050] Further, the opening and closing cover 31 is a component made of transparent material.

[0051] Specifically, the transparent material allows the operator to directly observe the solid-liquid separation condition inside the outer barrel 1 without opening the cover. During equipment operation, the worker can monitor in real time, and once an abnormality is found, such as a jam in the rotation of the inner barrel 2, the equipment can be stopped in time for processing, avoiding the expansion of the fault and reducing equipment damage and maintenance costs.

[0052] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0053] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one feature. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0054] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed by the present application, and these should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An environmental engineering solid-liquid separation apparatus, characterized by comprising: 1) a solid-liquid separation device, Include: The outer barrel (1) and the inner barrel (2); The outer barrel (1) is provided with a rotating drive assembly (11) and a lifting assembly (12), the rotating drive assembly (11) is arranged at the bottom of the inside of the outer barrel (1), the rotating drive assembly (11) includes a drive source (111) and a rotating power rod (112), the output part of the drive source (111) is in transmission connection with the rotating power rod (112), the outer wall of the rotating power rod (112) is provided with a plurality of clamping blocks (1121), the lifting assembly (12) includes a plurality of lifting rods (121), the lifting rod (121) includes a first fixed part (1211) and a first moving part (1212), the first fixed part (1211) of the lifting rod (121) is connected with the inner wall of the outer barrel (1) and extends along the gravity direction, the first moving part (1212) is located below the first fixed part (1211) and can stretch and contract along the extension direction of the first fixed part (1211) of the lifting rod (121), the end of the first moving part (1212) away from the first fixed part (1211) is provided with a supporting plate (1213), and the supporting plate (1213) is used for supporting the bottom of the inner barrel (2); The inner barrel (2) can be sleeved in the inside of the outer barrel (1), the side wall of the inner barrel (2) is provided with uniformly distributed liquid discharge through holes (21), and the bottom of the inner barrel (2) is provided with a clamping hole (22), which can be clamped with the rotating power rod (112).

2. The environmental engineering solid-liquid separation device according to claim 1, characterized in that, The bottom of the outer barrel (1) is further provided with a liquid storage assembly (13), the liquid storage assembly (13) includes a partition plate (131), a filter layer and a liquid discharge pipe (132), the partition plate (131) is connected with the inner side wall of the outer barrel (1) and forms a liquid storage cavity (133) with the bottom wall of the outer barrel (1), the partition plate (131) is provided with uniformly distributed liquid permeation through holes, the filter layer is laid on the partition plate (131), and the liquid discharge pipe (132) penetrates from the cavity wall of the liquid storage cavity (133) to the outside of the outer barrel (1).

3. The environmental engineering solid-liquid separation device according to claim 1, characterized in that, The clamping block (1121) can be elastically stretched and contracted, the clamping block (1121) is further provided with a sliding guide surface (1122), the guide surface is used for guiding the clamping block (1121) when the clamping block (1121) is subjected to the interaction force in the gravity direction, so that the clamping block (1121) can be elastically contracted.

4. The environmental engineering solid-liquid separation device according to claim 2, characterized in that, The rotating power rod (112) includes a second fixed part (1123) and a second moving part (1124), the second fixed part (1123) is located below the second moving part (1124), and the second moving part (1124) can stretch and contract along the extension direction of the second fixed part (1123).

5. The environmental engineering solid-liquid separation device according to claim 1, characterized in that, The outer wall of the bottom of the inner barrel (2) is provided with a plurality of supporting grooves, and a plurality of supporting grooves are clamped with a plurality of supporting plates (1213) one by one.

6. The environmental engineering solid-liquid separation device according to claim 4, characterized in that, The liquid discharge pipe (132) is further connected with a water pump.

7. An environmental engineering solid-liquid separation apparatus according to claim 6, wherein The opening end of the outer drum (1) is further provided with an opening and closing assembly (3), which comprises an opening and closing cover (31) and a rotating shaft (32). The opening and closing cover (31) is pivoted to the outer drum (1) through the rotating shaft (32), so that the opening and closing cover (31) can close the opening end of the outer drum (1).

8. The environmental engineering solid-liquid separation device according to claim 6, characterized in that, The outer drum (1) is further provided with an electric control box (14). The driving source (111), the lifting assembly (12), the rotating power rod (112) and the water pump are electrically connected with the electric control box (14).

9. The environmental engineering solid-liquid separation device according to claim 1, characterized in that, The opening end of the inner drum (2) is provided with a stress ring (15), which extends around the circumference of the opening end of the inner drum (2) and is used to abut against the top of the outer drum (1).

10. The environmental engineering solid-liquid separation device according to claim 7, characterized in that, The opening and closing cover (31) is a component made of transparent material.

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