Red mud filtering device convenient for solid-liquid separation

Abstract

The red mud filtering device comprises a shell, a feeding opening is formed in the top of the shell, a partition plate is fixedly installed in an inner cavity of the shell, telescopic pipes are fixedly installed on the front side and the rear side of the left side of the inner cavity of the shell correspondingly, and baffles are fixedly installed on the tops of the right sides of the telescopic pipes; an inclined plate is fixedly mounted at the top of the partition plate, and a flocculant box is fixedly mounted at the top of the left side of the shell. Solid and liquid doped in the red mud can be rapidly separated through the solid-liquid separation assembly, the moisture content in the red mud can be reduced through effective solid-liquid separation, the quality and stability of a final product are improved, abrasion and blockage of solid particles in the red mud to equipment can be reduced through a good separation structure, the service life of the equipment is prolonged, and the cost is reduced. Meanwhile, the effective solid-liquid separation is beneficial to reducing the negative influence on the environment in the production process, reducing the wastewater discharge amount and solving the waste treatment problem.

Description

Technical Field

[0001] The utility model relates to the technical field of red mud, and in particular, to a red mud filtering device facilitating solid-liquid separation. Background Art

[0002] Red mud (or red sludge) is a residue generated during the aluminum smelting process, usually rich in iron and aluminum oxides and other impurities. The alkali content in red mud is between 5% and 7%. The strongly alkaline waste soil has serious hazards to ground vegetation and groundwater, etc., and belongs to high-risk industrial waste residue. A large amount of red mud will be dug out during tunnel excavation, and the dug-out red mud will be wasted. Since red mud is also needed for subgrade materials, it leads to waste of resources. Therefore, this application filters and screens the dug-out red mud to make it meet the red mud for manufacturing subgrade materials for waste utilization, reduce resource waste, and increase resource utilization rate.

[0003] The existing filtering devices are not convenient for quickly separating the liquid and solid inside the red mud. If there is unseparated liquid inside the red mud, it may affect the quality of the final product. The inability to quickly and effectively separate may lead to blockage or failure during the operation of the equipment, increasing the frequency and cost of equipment maintenance and cleaning. The unseparated liquid may contain harmful substances or chemicals, and if not properly treated and separated, it may cause environmental pollution.

[0004] Therefore, we make improvements on this and propose a red mud filtering device facilitating solid-liquid separation. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems that the existing filtering devices are not convenient for quickly separating the liquid and solid inside the red mud. If there is unseparated liquid inside the red mud, it may affect the quality of the final product. The inability to quickly and effectively separate may lead to blockage or failure during the operation of the equipment, increasing the frequency and cost of equipment maintenance and cleaning. The unseparated liquid may contain harmful substances or chemicals, and if not properly treated and separated, it may cause environmental pollution.

[0006] In order to achieve the above-mentioned invention purpose, the utility model provides the following technical solutions:

[0007] A red mud filtering device facilitating solid-liquid separation to improve the above problems.

[0008] Specifically, this application is as follows:

[0009] The invention comprises a shell, a feed port is provided on the top of the shell, a partition is fixedly installed on the inner cavity of the shell, a telescopic tube is fixedly installed on the front and rear sides of the left side of the inner cavity of the shell, a baffle is fixedly installed on the top of the right side of the telescopic tube, an inclined plate is fixedly installed on the top of the partition, a flocculant box is fixedly installed on the top of the left side of the shell, a discharge pipe is connected to the bottom of the flocculant box, the right side of the discharge pipe penetrates into the inner cavity of the shell, a solenoid valve is sleeved on the surface of the discharge pipe, a stirring assembly is fixedly installed on the top of the right side of the shell, a protective shell is fixedly installed on the bottom of the right side of the shell, and a solid-liquid separation assembly is fixedly installed on the front side of the protective shell; the solid-liquid separation assembly comprises a second motor, the second motor is fixedly installed on the front side of the protective shell, a connecting rod is fixedly installed on the output end of the second motor, a first bevel gear is fixedly installed on the front and rear sides of the surface of the connecting rod, a second bevel gear is meshed on the left side of the first bevel gear, a movable rod is fixedly installed on the inner cavity of the second bevel gear, a cam is fixedly installed on the surface of the movable rod, and a filter plate is movably installed on the top of the cam.

[0010] The solid-liquid separation component can be used to quickly separate the solids and liquids mixed in the red mud. Effective solid-liquid separation can reduce the moisture content in the red mud and improve the quality and stability of the final product. A good separation structure can reduce the wear and blockage of equipment by solid particles in the red mud, extend the service life of the equipment, and reduce maintenance costs. At the same time, effective solid-liquid separation helps to reduce the negative impact on the environment during the production process, reduce wastewater discharge and waste disposal problems.

[0011] As a preferred embodiment of the red mud filtering device for facilitating solid-liquid separation provided by the utility model, the stirring assembly includes a first motor, the first motor is fixedly mounted on the top of the right side of the outer shell, a rotating rod is fixedly mounted on the output end of the first motor, two first synchronous wheels are fixedly mounted on the surface of the rotating rod, a second synchronous wheel is arranged on the opposite side of the two first synchronous wheels, a belt is connected between the first synchronous wheel and the second synchronous wheel, a stirring rod is fixedly mounted on the inner cavity of the second synchronous wheel, a stirring shaft is fixedly mounted on the surface of the stirring rod, a limit plate is sleeved on the surface of the first motor, and the limit plate is fixedly connected to the outer shell on the side close to the outer shell.

[0012] As a preferred embodiment of the red mud filtering device for facilitating solid-liquid separation provided by the utility model, support blocks are fixedly installed on the front and rear sides of the right side of the filter plate, and a support rod is slidably installed in the inner cavity of the support block.

[0013] As a preferred embodiment of the red mud filtering device that is convenient for solid-liquid separation provided by the utility model, a spring is sleeved on the top of the support rod surface, and the side of the spring close to the support block is fixedly connected to the support block, and the outer surface of the support rod is provided with a protective shell, and the side of the protective shell close to the outer shell is fixedly connected to the outer shell.

[0014] As a preferred embodiment of the red mud filtering device for facilitating solid-liquid separation provided by the utility model, a stabilizing plate is sleeved on the surface of the second motor, and the stabilizing plate is fixedly connected to the protective shell on one side close to the protective shell.

[0015] As a preferred embodiment of the red mud filtering device for facilitating solid-liquid separation provided by the utility model, a collecting box is movably installed at the bottom of the inner cavity of the shell, and fixing plates are fixedly installed on the front and rear sides of the left bottom of the shell, and a collecting box is detachably installed between the opposite sides of the two fixing plates.

[0016] As a preferred embodiment of the red mud filtering device for solid-liquid separation provided by the utility model, slots are provided on the tops of the two fixing plates on opposite sides, and plugs are fixedly installed on the front and rear sides of the collecting box.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the solid and liquid mixed in the red mud can be quickly separated through the solid-liquid separation component, the moisture content in the red mud can be reduced through effective solid-liquid separation, and the quality and stability of the final product can be improved. The good separation structure can reduce the wear and blockage of the equipment by solid particles in the red mud, extend the service life of the equipment, and reduce maintenance costs. At the same time, effective solid-liquid separation helps to reduce the negative impact on the environment during the production process, reduce wastewater discharge and waste treatment problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a red mud filtration device for facilitating solid-liquid separation provided in this application;

[0019] Figure 2 A schematic diagram of the front and cross-sectional view of the structure of a red mud filtering device for facilitating solid-liquid separation provided in the present application;

[0020] Figure 3 A schematic side view of a collecting box of a red mud filtration device for facilitating solid-liquid separation provided in the present application;

[0021] Figure 4 A schematic front view of a stirring assembly of a red mud filtering device for facilitating solid-liquid separation provided in the present application;

[0022] Figure 5 A schematic bottom-up cross-sectional view of a solid-liquid separation assembly of a red mud filtration device for facilitating solid-liquid separation provided in the present application.

[0023] Indications in the figure:

[0024] 1. Outer shell; 2. Feed inlet; 3. Partition board; 4. Telescopic tube; 5. Baffle; 6. Inclined plate; 7. Flocculant tank; 8. Discharge pipe; 9. Solenoid valve; 10. Stirring assembly; 1001. First motor; 1002. Rotating rod; 1003. First synchronous pulley; 1004. Second synchronous pulley; 1005. Belt; 1006. Stirring rod; 1007. Stirring shaft; 1008. Limiting plate; 11. Protective shell; 12. Solid-liquid separation assembly; 1201. Second motor; 1202. Connecting rod; 1203. First bevel gear; 1204. Second bevel gear; 1205. Movable rod; 1206. Cam; 1207. Filter plate; 1208. Support block; 1209. Support rod; 1210. Spring; 1211. Protective housing; 1212. Stabilizing plate; 13. Collection box; 14. Fixed plate; 15. Collection tank; 16. Slot; 17. Insert block. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0026] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0028] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] As described in the background art, the existing filtering device is not convenient for quickly separating the liquid and solid inside the red mud. If there is unseparated liquid inside the red mud, it may affect the quality of the final product. The inability to quickly and effectively separate may lead to blockage or failure during the operation of the equipment, increasing the frequency and cost of equipment maintenance and cleaning. The unseparated liquid may contain harmful substances or chemicals, and if not properly treated and separated, it may cause environmental pollution problems.

[0031] To solve this technical problem, the present utility model provides a red mud filtering device convenient for solid-liquid separation.

[0032] Specifically, please refer to Figures 1-5 , the red mud filtering device convenient for solid-liquid separation specifically includes: a housing 1, a feed port 2 is opened at the top of the housing 1, a partition 3 is fixedly installed in the inner cavity of the housing 1, telescopic tubes 4 are fixedly installed on the front side and the rear side of the left side of the inner cavity of the housing 1, a baffle 5 is fixedly installed at the top of the right side of the telescopic tube 4, an inclined plate 6 is fixedly installed at the top of the partition 3, a flocculant tank 7 is fixedly installed at the top of the left side of the housing 1, a discharge pipe 8 is communicated with the bottom of the flocculant tank 7, the right side of the discharge pipe 8 penetrates into the inner cavity of the housing 1, a solenoid valve 9 is sleeved on the surface of the discharge pipe 8, a stirring assembly 10 is fixedly installed at the top of the right side of the housing 1, a protective shell 11 is fixedly installed at the bottom of the right side of the housing 1, and a solid-liquid separation assembly 12 is fixedly installed on the front side of the protective shell 11; the solid-liquid separation assembly 12 includes a second motor 1201, the second motor 1201 is fixedly installed on the front side of the protective shell 11, a connecting rod 1202 is fixedly installed at the output end of the second motor 1201, first bevel gears 1203 are fixedly installed on the front side and the rear side of the surface of the connecting rod 1202, a second bevel gear 1204 is meshed with the left side of the first bevel gear 1203, a movable rod 1205 is fixedly installed in the inner cavity of the second bevel gear 1204, a cam 1206 is fixedly installed on the surface of the movable rod 1205, and a filter plate 1207 is movably installed at the top of the cam 1206.

[0033] The solid-liquid separation component 12 can quickly separate the solids and liquids doped in the red mud. Effective solid-liquid separation can reduce the moisture content in the red mud, improve the quality and stability of the final product. A good separation structure can reduce the wear and blockage of the equipment by solid particles in the red mud, extend the service life of the equipment, reduce the maintenance cost. At the same time, effective solid-liquid separation helps to reduce the negative impact on the environment during the production process, reduce the wastewater discharge and waste treatment problems.

[0034] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] Embodiment 1

[0038] Please refer to Figures 1-5, a red mud filtration device facilitating solid-liquid separation, comprising a housing 1. A feed inlet 2 is provided at the top of the housing 1. A partition plate 3 is fixedly installed in the inner cavity of the housing 1. Telescopic pipes 4 are fixedly installed on the front side and the rear side of the left side of the inner cavity of the housing 1. A baffle 5 is fixedly installed at the top of the right side of the telescopic pipe 4. An inclined plate 6 is fixedly installed at the top of the partition plate 3. A flocculant tank 7 is fixedly installed at the top of the left side of the housing 1. A discharge pipe 8 communicates with the bottom of the flocculant tank 7. The right side of the discharge pipe 8 penetrates into the inner cavity of the housing 1. An electromagnetic valve 9 is sleeved on the surface of the discharge pipe 8. A stirring assembly 10 is fixedly installed at the top of the right side of the housing 1. A protective shell 11 is fixedly installed at the bottom of the right side of the housing 1. A solid-liquid separation assembly 12 is fixedly installed on the front side of the protective shell 11. The solid-liquid separation assembly 12 includes a second motor 1201 fixedly installed on the front side of the protective shell 11. A connecting rod 1202 is fixedly installed at the output end of the second motor 1201. First bevel gears 1203 are fixedly installed on the front side and the rear side of the surface of the connecting rod 1202. A second bevel gear 1204 is meshed with the left side of the first bevel gear 1203. A movable rod 1205 is fixedly installed in the inner cavity of the second bevel gear 1204. A cam 1206 is fixedly installed on the surface of the movable rod 1205. A filter plate 1207 is movably installed at the top of the cam 1206. Support blocks 1208 are fixedly installed on the front side and the rear side of the right side of the filter plate 1207. A support rod 1209 is slidably installed in the inner cavity of the support block 1208. A spring 1210 is sleeved on the top of the surface of the support rod 1209. One side of the spring 1210 close to the support block 1208 is fixedly connected with the support block 1208. A protective shell 1211 is arranged on the outer surface of the support rod 1209. One side of the protective shell 1211 close to the housing 1 is fixedly connected with the housing 1. A stabilizing plate 1212 is sleeved on the surface of the second motor 1201. One side of the stabilizing plate 1212 close to the protective shell 11 is fixedly connected with the protective shell 11.

[0039] During the implementation process, by starting the second motor 1201, the second motor 1201 drives the connecting rod 1202 to rotate during use. The rotation of the connecting rod 1202 drives the first bevel gear 1203 to rotate. The rotation of the first bevel gear 1203 drives the second bevel gear 1204 to rotate. The rotation of the second bevel gear 1204 drives the movable rod 1205 and the cam 1206 to rotate. When the cam 1206 rotates, it will push the filter plate 1207 upwards. When the filter plate 1207 moves, it will squeeze the spring 1210 through the support block 1208. The reset of the spring 1210 drives the support block 1208 and the filter plate 1207 to reset. By moving the filter plate 1207 back and forth, the solids and liquids in the red mud are filtered. During the filtration process, the liquid drops into the interior of the collection box 13 through the filter plate 1207. The filter plate 1207 is inclined. The solids fall into the interior of the collection box 15 through the left side of the filter plate 1207, thus achieving rapid solid-liquid separation.

[0040] Example 2

[0041] The stirring assembly 10 includes a first motor 1001, the first motor 1001 is fixedly installed at the top on the right side of the housing 1, a rotating rod 1002 is fixedly installed at the output end of the first motor 1001, two first synchronous wheels 1003 are fixedly installed on the surface of the rotating rod 1002, a second synchronous wheel 1004 is arranged on each of the opposite sides of the two first synchronous wheels 1003, a belt 1005 is drivingly connected between the first synchronous wheel 1003 and the second synchronous wheel 1004, a stirring rod 1006 is fixedly installed in the inner cavity of the second synchronous wheel 1004, and a stirring shaft 1007 is fixedly installed on the surface of the stirring rod 1006. A limiting plate 1008 is sleeved on the surface of the first motor 1001, and the side of the limiting plate 1008 close to the housing 1 is fixedly connected to the housing 1.

[0042] During the implementation process, by starting the first motor 1001, the first motor 1001 drives the rotating rod 1002 to rotate during use, the rotating rod 1002 rotates to drive the two first synchronous wheels 1003 to rotate, the first synchronous wheels 1003 rotate to drive the second synchronous wheels 1004 to rotate through the belt 1005, the second synchronous wheels 1004 rotate to drive the stirring rods 1006 to rotate, the stirring rods 1006 rotate to drive the stirring shafts 1007 to rotate, and the rotation of the stirring shafts 1007 drives the solid-liquid in the red mud and the flocculant to be mixed. The flocculant acts on the fine particles in the red mud, causing them to aggregate into larger lumps, which is more convenient for solid-liquid separation.

[0043] During use, the red mud enters the interior of the outer shell 1 through the feed inlet 2. By activating the telescopic tube 4, the telescopic tube 4 drives the baffle 5 to move during use. When the baffle 5 moves to the right side at the bottom of the partition plate 3, the top of the inner cavity of the outer shell 1 is sealed. The solenoid valve 9 is opened, and the flocculant in the flocculant tank 7 enters the top of the inner cavity of the outer shell 1 through the discharge pipe 8. By activating the first motor 1001, the first motor 1001 drives the rotating rod 1002 to rotate during use. The rotation of the rotating rod 1002 drives the two first synchronous wheels 1003 to rotate. The rotation of the first synchronous wheels 1003 drives the second synchronous wheel 1004 to rotate through the belt 1005. The rotation of the second synchronous wheel 1004 drives the stirring rod 1006 to rotate. The rotation of the stirring rod 1006 drives the stirring shaft 1007 to rotate. The rotation of the stirring shaft 1007 drives the solid-liquid in the red mud and the flocculant to be mixed. The flocculant acts on the fine particles in the red mud, causing them to aggregate into larger lumps, which is more convenient for solid-liquid separation. By operating the telescopic tube 4 again, the baffle 5 is moved to the bottom of the partition plate 3. The mixed red mud drops from the right side of the inclined plate 6 to the bottom. The red mud will pass through the filter plate 1207 during the dropping process. By activating the second motor 1201, the second motor 1201 drives the connecting rod 1202 to rotate during use. The rotation of the connecting rod 1202 drives the first bevel gear 1203 to rotate. The rotation of the first bevel gear 1203 drives the second bevel gear 1204 to rotate. The rotation of the second bevel gear 1204 drives the movable rod 1205 and the cam 1206 to rotate. The rotation of the cam 1206 will push the filter plate 1207 upward. When the filter plate 1207 moves, it will squeeze the spring 1210 through the support block 1208. The reset of the spring 1210 drives the support block 1208 and the filter plate 1207 to reset. By moving the filter plate 1207 back and forth, the solid and liquid in the red mud are filtered. The liquid drops into the interior of the collection box 13 during the filtration process. The filter plate 1207 is inclined. The solid drops into the interior of the collection box 15 from the left side of the filter plate 1207, thus achieving rapid solid-liquid separation.

[0044] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A red mud filtering device facilitating solid-liquid separation, comprising a housing (1), characterized in that, A feed inlet (2) is provided at the top of the outer shell (1). A partition plate (3) is fixedly installed in the inner cavity of the outer shell (1). The front side and the rear side of the left side of the inner cavity of the outer shell (1) are both fixedly installed with telescopic tubes (4). A baffle plate (5) is fixedly installed at the top of the right side of the telescopic tube (4). An inclined plate (6) is fixedly installed at the top of the partition plate (3). A flocculant tank (7) is fixedly installed at the top of the left side of the outer shell (1). A discharge pipe (8) communicates with the bottom of the flocculant tank (7). The right side of the discharge pipe (8) penetrates into the inner cavity of the outer shell (1). A solenoid valve (9) is sleeved on the surface of the discharge pipe (8). A stirring assembly (10) is fixedly installed at the top of the right side of the outer shell (1). A protective shell (11) is fixedly installed at the bottom of the right side of the outer shell (1). A solid-liquid separation assembly (12) is fixedly installed on the front side of the protective shell (11). The solid-liquid separation assembly (12) includes a second motor (1201). The second motor (1201) is fixedly installed on the front side of the protective shell (11). A connecting rod (1202) is fixedly installed at the output end of the second motor (1201). The front side and the rear side of the surface of the connecting rod (1202) are both fixedly installed with first bevel gears (1203). A second bevel gear (1204) is meshed on the left side of the first bevel gear (1203). A movable rod (1205) is fixedly installed in the inner cavity of the second bevel gear (1204). A cam (1206) is fixedly installed on the surface of the movable rod (1205). A filter plate (1207) is movably installed on the top of the cam (1206).

2. The red mud filtration device for facilitating solid-liquid separation according to claim 1, characterized in that, The stirring assembly (10) includes a first motor (1001). The first motor (1001) is fixedly installed at the top of the right side of the outer shell (1). A rotating rod (1002) is fixedly installed at the output end of the first motor (1001). Two first synchronous wheels (1003) are fixedly installed on the surface of the rotating rod (1002). A second synchronous wheel (1004) is arranged on the opposite side of each of the two first synchronous wheels (1003). A belt (1005) is connected in a transmission manner between the first synchronous wheel (1003) and the second synchronous wheel (1004). A stirring rod (1006) is fixedly installed in the inner cavity of the second synchronous wheel (1004). A stirring shaft (1007) is fixedly installed on the surface of the stirring rod (1006). A limiting plate (1008) is sleeved on the surface of the first motor (1001). The side of the limiting plate (1008) close to the outer shell (1) is fixedly connected to the outer shell (1).

3. The red mud filtration device for facilitating solid-liquid separation according to claim 2, wherein, Support blocks (1208) are fixedly installed on the front side and the rear side of the right side of the filter plate (1207). A support rod (1209) is slidably installed in the inner cavity of the support block (1208).

4. The red mud filtration device facilitating solid-liquid separation according to claim 3, characterized in that, A spring (1210) is sleeved on the top of the surface of the support rod (1209). One side of the spring (1210) close to the support block (1208) is fixedly connected to the support block (1208). A protective shell (1211) is arranged on the outer surface of the support rod (1209). One side of the protective shell (1211) close to the outer shell (1) is fixedly connected to the outer shell (1).

5. The red mud filtration device facilitating solid-liquid separation according to claim 4, characterized in that, A stabilizing plate (1212) is sleeved on the surface of the second motor (1201). One side of the stabilizing plate (1212) close to the protective shell (11) is fixedly connected to the protective shell (11).

6. The red mud filtration device facilitating solid-liquid separation according to claim 1, wherein A collection box (13) is movably installed at the bottom of the inner cavity of the outer shell (1). Fixing plates (14) are fixedly installed on the front side and the rear side at the left bottom of the outer shell (1). A collection bin (15) is detachably installed between the opposite sides of the two fixing plates (14).

7. An apparatus for filtering red mud facilitating solid-liquid separation according to claim 6, characterized in that, Slots (16) are formed at the top of the opposite sides of the two fixing plates (14). Plug blocks (17) are fixedly installed on the front side and the rear side of the collection bin (15).

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