Solid waste sample collecting device

Abstract

The utility model discloses a solid waste sample collecting device, and aims to solve the problems that the traditional solid waste sample collecting and sorting quality is poor, and manpower and material resources are consumed. The cavity cover, the screening cavity, the mixing cavity, the distribution cavity and the screening stirring shafts are coaxially arranged and sequentially and correspondingly connected from top to bottom, a screening net is arranged at the bottom of the screening cavity, a discharging net is arranged at the bottom of the mixing cavity, a plurality of storage bins are arranged at the bottom of the distribution cavity, and the screening stirring shafts are arranged along the axis of the screening cavity, the axis of the mixing cavity and the axis of the distribution cavity and sequentially and correspondingly connected in a transmission mode. The rocking handle is arranged at the central position of the cavity cover in a penetrating manner and is in corresponding transmission connection with the screening stirring shaft; and corresponding screening stirring teeth, mixing stirring teeth and distribution stirring teeth are respectively and circumferentially arrayed outside the screening stirring shaft, the mixing stirring shaft and the distribution stirring shaft. The device has the advantages of high sampling efficiency, convenience in operation, convenience in carrying and the like.

Description

Technical Field

[0001] The present application relates to the technical field of solid waste sampling, and in particular to a solid waste sample collection device. Background Art

[0002] Mining solid waste refers to the residual waste generated during the mining and ore smelting process. Among them, the solid waste generated by mining includes waste rock and tailings (tailings). Specifically, the surrounding rock and interlayer rocks of the ore body with no industrial value generated during the mining process are collectively referred to as mining waste rock; for pit mining, waste rock is the rock that is separated during tunnel excavation and blasting in the mining area and cannot be used as ore; for open-pit mines, waste rock is the surrounding rock or interlayer rocks on the surface of the ore bed that have been stripped off. After the target concentrate is selected from the ore during the ore dressing process, the remaining slag containing very little target metal is called tailings.

[0003] Mine waste rock and tailings not only occupy a large amount of land, but also directly pollute the environment and threaten people's lives and property. In order to understand the physical, chemical and biological characteristics of mine solid waste, evaluate its possible impact on the environment and ecology, and the utilization value of mine solid waste, it is necessary to collect representative samples from mine solid waste. Through the test and analysis of these samples, data within the allowable error range is obtained.

[0004] The actual solid waste at the mine site contains more impurities and the particle sizes vary. The indoor test has strict requirements on the quality of the received samples: first, the samples to be inspected must be uniform in texture and must not contain impurities; second, the particle size of the solid waste samples must not be greater than 10mm; and the samples must be collected at no less than 5 sampling points. The samples collected at each location must be mixed and evenly divided into 5 samples and bagged, and each sample must not be less than 1500g.

[0005] Traditionally, samples are manually screened and sorted, and then divided into 5 parts and packed for inspection. However, in the process of implementing the technical solution in the embodiment of the present application, the inventors of the present application found that the samples sent for inspection often have poor sorting quality, contain impurities, and have uneven components. The sampling quality cannot meet the laboratory sampling requirements, and the sorting process requires the use of multiple equipment and a lot of manpower.

[0006] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art. Summary of the invention

[0007] In view of at least one of the above technical problems, the present disclosure provides a solid waste sample collection device, aiming to solve the problem that traditional solid waste sample collection and sorting has poor quality and consumes manpower and material resources.

[0008] According to one aspect of the present disclosure, a solid waste sample collection device is provided, comprising a cavity cover coaxially arranged and correspondingly connected from top to bottom, a screening cavity with a screening net at the bottom of the cavity, a mixing cavity with a material discharge net at the bottom of the cavity, a distribution cavity with a plurality of storage bins at the bottom of the cavity, a screening stirring shaft, a mixing stirring shaft and a distribution stirring shaft respectively arranged along the axes of the screening cavity, the mixing cavity and the distribution cavity and correspondingly connected in transmission in sequence, and a crank disposed at the center of the cavity cover and correspondingly connected in transmission with the screening stirring shaft; the screening stirring shaft, the mixing stirring shaft and the distribution stirring shaft are respectively provided with corresponding screening stirring teeth, mixing stirring teeth and distribution stirring teeth in circular arrays on the outside.

[0009] In some embodiments of the present disclosure, the chamber cover, the screening chamber, the mixing chamber, and the distribution chamber are correspondingly connected by threads.

[0010] In some embodiments of the present disclosure, the diameter of the screening net matches the required diameter of the solid waste sample particles.

[0011] In some embodiments of the present disclosure, the volumes of the storage bins are consistent, the chambers of the storage bins are connected to the chambers of the distribution chamber, and the bottoms of the storage bins are movable end covers that can be opened and closed.

[0012] In some embodiments of the present disclosure, the crank handle is connected to corresponding bearings between the chamber cover; the screening agitator shaft, the mixing agitator shaft and the distribution agitator shaft are connected to corresponding bearings of the chamber bottoms of the corresponding screening chamber, the mixing chamber and the distribution chamber respectively.

[0013] In some embodiments of the present disclosure, the bottom ends of the crank handle, screening agitator shaft, and mixing agitator shaft are provided with connecting keys with corresponding polygonal cross-sections along the axis, and the top ends of the screening agitator shaft, mixing agitator shaft, and distribution agitator shaft are provided with key slots along the axis that correspond to and match the connecting keys.

[0014] In some embodiments of the present disclosure, annular bosses are respectively provided at the bottom center positions of the cavity cover, the screening cavity, and the mixing cavity, and the inner edge contours of the annular bosses correspond to the outer edge contours of the screening agitator shaft, the mixing agitator shaft, and the distribution agitator shaft.

[0015] In some embodiments of the present disclosure, the screening stirring teeth are rod bodies, the mixing stirring teeth are fishbone-shaped, and the distributing stirring teeth are plate bodies.

[0016] In some embodiments of the present disclosure, the outer circumferential array of the mixing chamber or the distribution chamber has a plurality of legs which are hinged to the mixing chamber or the distribution chamber and can be extended and retracted along the axial direction thereof, and fixing buckles for fixing the legs are respectively provided at corresponding positions outside the screening chamber.

[0017] In some embodiments of the present disclosure, a cross-section corresponding to the hinge axis where the support leg is hinged to the mixing chamber or the distribution chamber is polygonal.

[0018] One or more technical solutions provided in the embodiments of the present application have at least any of the following technical effects or advantages:

[0019] 1. The screening chamber, mixing chamber and distribution chamber with corresponding stirring shafts can realize on-demand screening, sufficient mixing and even distribution of solid waste in the mine, which greatly liberates the labor of sampling personnel. The required solid waste samples can be obtained by simply filling the cavity and stirring, making the sampling process efficient and convenient.

[0020] 2. The screening chamber, mixing chamber and distribution chamber are coaxially arranged up and down. The solid waste can fall into the corresponding chamber in sequence by gravity and the stirring action of the stirring shaft, thereby realizing the organic combination of screening, mixing and distribution processes, and directly obtaining the required solid waste samples. It is portable and suitable for direct operation in field mines.

[0021] 3. The legs allow the sample collection device to be stably supported on the ground when needed, and the legs are retractable so that they can more effectively adapt to the uneven ground of the mine. In addition, the legs can be rotated accordingly and retracted to the fixing buckle for fixing after the collection device is used, which helps to improve the portability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the use status of the solid waste sample collection device in one embodiment of the present application.

[0023] Figure 2 This is a schematic diagram of the storage state of the solid waste sample collection device in one embodiment of the present application.

[0024] Figure 3 It is a schematic cross-sectional structural diagram of a solid waste sample collection device in one embodiment of the present application.

[0025] Figure 4 Schematic diagram of the structure of the screening chamber in one embodiment of the present application.

[0026] Figure 5 Schematic diagram of the structure of the cavity cover in one embodiment of the present application.

[0027] Figure 6 Schematic diagram of the structure of the mixing chamber in one embodiment of the present application.

[0028] Figure 7 It is a schematic diagram of the structure of the distribution chamber in one embodiment of the present application.

[0029] Figure 8 It is a schematic diagram of the structure of the support leg in one embodiment of the present application.

[0030] In the above figures, 1 is a cavity cover, 11 is a crank handle, 12 is a connecting key, 13 is an annular boss, 2 is a screening cavity, 21 is a screening net, 22 is a screening stirring shaft, 23 is a screening stirring tooth, 24 is a keyway, 3 is a mixing cavity, 31 is a feeding net, 32 is a mixing stirring shaft, 33 is a mixing stirring tooth, 4 is a distribution cavity, 41 is a distribution stirring shaft, 42 is a distribution stirring tooth, 43 is a storage bin, 5 is a support leg, 51 is a hinged seat, 52 is a support leg body, 53 is a telescopic part, and 6 is a fixing buckle. DETAILED DESCRIPTION

[0031] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. The "connection" and "coupling" involved in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0032] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] In the process of adjusting and evaluating the pollution status of historical mines, it is necessary to sample the solid waste at the mine site and send it to the laboratory for analysis and testing. Since the solid waste contains a lot of impurities and the particle size is uneven, a series of operations including screening, mixing, and equal distribution are required before sending it to the laboratory for analysis and testing. This process needs to be implemented by manpower with the help of various devices, which is time-consuming, labor-intensive and inefficient. To this end, this example discloses a solid waste sample collection device to improve the efficiency and convenience of solid waste sample collection, and qualified solid waste samples can be directly obtained at the sampling site.

[0034] For details, see Figure 1-Figure 3 The solid waste sample collection device disclosed in the present invention includes a chamber cover 1, a screening chamber 2, a mixing chamber 3 and a distribution chamber 4.

[0035] The screening chamber 2 is used to hold the solid waste from the mine sampling site and screen the solid waste to obtain solid waste particles with the particle size required for laboratory analysis. Figure 4 In this embodiment, the screening chamber 2 includes an annular cavity wall and a screening net 21 arranged at the bottom of the cavity; wherein the mesh diameter of the screening net 21 is consistent with the diameter of the solid waste particles required for laboratory analysis, thereby, the screening effect of the screening net 21 can achieve the acquisition of solid waste of corresponding particle size.

[0036] In order to facilitate the loading of the collected solid waste into the screening chamber 2, so as to facilitate the screening of the solid waste using the screening net 21 at the bottom of the screening chamber 2, in this embodiment, the top of the screening chamber 2 is not sealed to be used as a filler. In addition, considering that the solid waste in the screening chamber 2 cannot be screened through the screening net 21 by relying solely on its own gravity, see Figure 4 , a screening stirring shaft 22 is provided along the central axis of the screening chamber 2, and the screening stirring shaft 22 is connected to the center of the bottom of the screening chamber 2 through a bearing, the outer ring of the bearing is relatively fixed to the bottom of the screening chamber 2, and the inner ring of the bearing is relatively fixed to the screening stirring shaft 22, thereby realizing the rotation of the screening stirring shaft 22 along the central axis of the screening chamber 2. In addition, a plurality of screening stirring teeth 23 are provided in a circumferential array at the outer edge of the screening stirring shaft 22. In this embodiment, each screening stirring tooth 23 is a rod body and is arranged in an interlaced manner, thereby realizing the stirring of the solid waste in the screening chamber 2 to a greater extent, thereby accelerating the solid waste with the required particle size to fall through the screening net 21.

[0037] However, in order to realize the driving of the screening stirring shaft 22, in this embodiment, a chamber cover 1 is arranged above the screening chamber 2, see Figure 3 to Figure 5 The chamber cover 1 is threadedly connected to the screening chamber 2. Therefore, when filling the screening chamber 2 with solid waste, the chamber cover 1 can be opened as needed. After the filling is completed, the chamber cover 1 can be installed above the screening chamber 2 again to seal the screening chamber 2 and prevent the dust generated by stirring in the screening chamber from spreading. A crank 11 is connected to the bearing at the center of the chamber cover 1. The crank 11 is transmission-connected to the screening stirring shaft 22. The sampling personnel can drive the screening stirring shaft 22 by rotating the crank 11. Specifically, in this embodiment, to achieve the transmission connection between the crank 11 and the screening stirring shaft 22, see Figure 4 and Figure 5 The bottom end of the crank handle 11 is provided with a connecting key 12 with a quadrilateral horizontal cross-section, and the top end of the screening and stirring shaft 22 is provided with a key slot 24 matching the outer edge profile of the connecting key. When the cavity cover 1 is installed, the connecting key is aligned with the key slot and inserted into the key slot. On the one hand, the concentricity between the crank handle 11 and the screening and stirring shaft 22 can be ensured by the cooperation between the connecting key 12 and the key slot 24; on the other hand, the transmission connection between the crank handle 11 and the screening and stirring shaft 22 can be realized without affecting the installation between the cavity cover 1 and the screening cavity 2; in some other embodiments, the cross-section of the connecting key 12 is other polygons.

[0038] In addition, in this embodiment, see Figure 5, an annular boss 13 is provided at the bottom center of the chamber cover 1, wherein the inner diameter of the annular boss 13 matches the outer diameter of the screening and stirring shaft 22, so that after the chamber cover 1 and the screening chamber 2 are connected by corresponding threads, the screening and stirring shaft 22 is just embedded between the annular boss 13 and the connecting key 12, and the annular boss 13 further limits the screening and stirring shaft 22, ensuring the concentricity between the crank 11 and the screening and stirring shaft 22 during stirring. In some other embodiments, the annular boss also supports and limits the outer ring of the bearing at the screening and stirring shaft 22, that is, an annular shoulder is formed between the annular boss and the screening net of the screening chamber, so that the screening and stirring shaft 22 can be disassembled and placed at the annular shoulder, so as to facilitate the subsequent disassembly of the collection device and facilitate cleaning.

[0039] After screening in the screening chamber 2, solid waste with particle sizes that meet the laboratory analysis requirements falls through the screening net at the bottom of the screening chamber. Considering the laboratory's requirements for uniformity of solid waste samples, in this embodiment, a mixing chamber 3 is coaxially arranged below the screening chamber 2. For details, see Figure 6 The top of the mixing chamber 3 is threadedly connected to the screening chamber 2, so that the mixing chamber 3 can be cleaned after disassembly. A material discharge net 31 is provided at the bottom of the mixing chamber 3. In this example, the mesh diameter of the material discharge net 31 is consistent with the mesh diameter of the screening net 21, which can meet the material discharge requirements and filter the solid waste again.

[0040] In order to achieve uniform mixing of solid waste in the mixing chamber 3, see Figure 6 , a mixing shaft 32 is connected to the bearing at the center of the feeding net 31 of the mixing chamber 3. The mixing shaft 32 is coaxially arranged with the mixing chamber 3, and a plurality of mixing teeth 33 are arranged in an array on the outer circumference of the mixing shaft 32. In this example, the mixing teeth 33 are in the shape of fish bones, thereby fully stirring the solid waste materials in the mixing chamber 3 and achieving the purpose of uniformly mixing the solid waste. Similarly, the mixing shaft 32 is connected to the screening and stirring shaft 22 by transmission. Specifically, the bottom of the screening and stirring shaft 22 is provided with a connecting key with a quadrilateral cross section, and the bottom end of the mixing and stirring shaft 32 is provided with a keyway matching the connecting key, so that the connecting key can be appropriately engaged in the keyway, thereby realizing the transmission of power from the crank to the screening and stirring shaft 22 and the mixing and stirring shaft 32 in sequence. In addition, an annular boss matching the mixing and stirring shaft 32 is provided at the center of the bottom of the screening net, which can be correspondingly engaged to the outside of the mixing and stirring shaft 32 when the screening chamber 2 and the mixing chamber 3 are correspondingly connected.

[0041] The distribution chamber 4 is used to divide the solid waste uniformly mixed by the mixing chamber 3 into several portions. Figure 7The distribution chamber 4 is threadedly connected to the mixing chamber 3, and the corresponding coaxial line is connected to the bottom of the mixing chamber 3; the bottom of the distribution chamber 4 is connected to a plurality of storage bins 43, and the volume of each storage bin 43 is consistent, and then by pushing the solid waste falling from the mixing chamber 3 into each storage bin 43, the equal volume distribution of the solid waste sample is achieved. In this embodiment, a total of five samples are required, so a total of five storage bins 43 are provided, and each storage bin 43 is arranged in a circumferential array at the bottom of the distribution chamber 4 and is connected to the cavity of the distribution chamber.

[0042] However, in order to quickly distribute the solid waste falling from the mixing chamber to each storage bin 43, in this embodiment, see Figure 7 , a distribution stirring shaft 41 is connected to a bearing at the center of the bottom of the distribution chamber 4, and a plurality of distribution stirring teeth 42 are arranged in an array on the outer circumference of the distribution stirring shaft 41. In this example, the distribution stirring teeth 42 are plates, so that the solid waste sample body is pushed through the larger contact area of ​​the plate, and then falls into the storage bin 43. Among them, the distribution stirring shaft 41 is connected to the mixing and stirring shaft 32 by transmission. Similarly, a connecting key with a quadrilateral cross section is provided at the bottom end of the mixing and stirring shaft 32, and a key slot matching the connecting key is provided at the top end of the distribution stirring shaft 41. The power transmission is realized by the engagement between the two. In addition, in this embodiment, similarly, an annular boss is provided at the center of the bottom of the feeding net of the mixing chamber 3. The annular boss is correspondingly engaged with the distribution stirring shaft 41, which plays a role in positioning and ensuring concentricity, and can also realize the detachable installation of the mixing and stirring shaft 32. In addition, in order to achieve the detachability of the distribution stirring shaft 41, in the present embodiment, an annular shoulder for positioning the load-bearing bearing is provided at the center of the bottom plate of the distribution chamber 4, and the detachable installation of the distribution stirring shaft is achieved by engaging the bearing at the distribution stirring shaft 41 with the shoulder.

[0043] The bottom of each storage bin 43 is an openable and closable movable end cover, so that when the collection device is stirred, the end cover is closed, and the solid waste samples are gathered in the storage bin 43. When each storage bin 43 is filled, the movable end cover of the corresponding storage bin 43 is opened in turn, and the solid waste samples are received into the sample bag accordingly. Specifically, in the present embodiment, the movable end cover is hingedly arranged with the storage bin 43, and the movable end cover can rotate horizontally along the end face of the storage bin. An L-shaped buckle fixedly connected to the storage bin is provided on the opposite side of the corresponding hinged part, and an L-shaped handle is provided at the corresponding position of the movable end cover. Through the staggered engagement between the handle and the buckle, on the one hand, the buckle limits the handle along the rotation direction of the movable end cover, ensuring that the movable end cover is closed to the storage bin and avoiding leakage caused by the existence of gaps; on the other hand, the buckle limits the handle along the vertical direction, ensuring reliable contact between the movable end cover and the end face of the storage bin opening, thereby ensuring the closing effect of the movable end cover. In addition. In this embodiment, each storage bin 43 is made of a transparent material to facilitate observation of the filling level in the storage bin.

[0044] To facilitate the placement of the solid waste sample collection device during use, see Figure 1 and Figure 2 In this embodiment, a plurality of legs 5 are arranged in a circular array on the outer edge of the distribution chamber. In some other embodiments, each leg is arranged correspondingly to the outer edge of the mixing chamber 3. Considering the portability of the solid waste sample collection device during outdoor operation, in this embodiment, the legs 5 are hinged to the outer edge of the distribution chamber. However, in order to ensure the support stability of the legs 5 when the device is in use, in this embodiment, three groups of legs are arranged in total. There are three hinged plates arranged at equal angles on the bottom edge of the distribution chamber, see Figure 8 , each leg 5 is provided with a hinge seat 51 matching the hinge plate at the end thereof, wherein the hinge hole at the hinge plate and the hinge seat 51 is a polygonal structure, and the cross section of the corresponding hinge shaft is a polygon matching the hinge hole, thereby realizing the adjustment of the corresponding angle of the leg by the corresponding hinge shaft passing through the hinge hole. In this embodiment, the hinge hole is a pentagonal structure, and at the same time, in order to prevent the hinge shaft from falling off, an end cap is provided at one end of the shaft body of the hinge shaft, and a cylindrical stud is provided at the other end, and the position limiting of the intersecting hinge shaft is realized by screwing a nut on the stud.

[0045] In addition, in this embodiment, considering the uneven ground of the mine, in order to achieve stable placement of the sample collection device, see Figure 8 Each support leg is a retractable structure. Specifically, in addition to the hinged seat 51, the support leg also includes a support leg body 52 and a retractable part 53. The end of the support leg body 52 is provided with an external thread of a certain length. The retractable part 53 is a tube body, and an internal thread matching the external thread of the support leg body 52 is provided inside the tube body. The two are threadedly connected, and the extension length of the support leg 5 can be adjusted by rotating to adapt to the uneven ground environment of the mine.

[0046] To facilitate the storage of the leg support, see Figure 1 and Figure 2 A fixing buckle 6 for engaging the leg 5 is provided on the outer edge of the screening cavity. The fixing buckle 6 is a plastic material part with a U-shaped structure, has a certain deformation characteristic, and the opening is smaller than the corresponding diameter of the leg, so that the leg can be firmly buckled in the buckle body, which is convenient for storing the leg when not in use.

[0047] Although some preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the inventive concept. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A solid waste sample collection device, characterized in that: It includes a cavity cover which is coaxially arranged and connected in sequence from top to bottom, a screening cavity with a screening net at the bottom, a mixing cavity with a feeding net at the bottom, a distribution cavity with a plurality of storage bins at the bottom, a screening stirring shaft, a mixing stirring shaft and a distribution stirring shaft which are respectively arranged along the axes of the screening cavity, the mixing cavity and the distribution cavity and are correspondingly connected in sequence, and a crank which is passed through the center of the cavity cover and is correspondingly connected in sequence; the screening stirring shaft, the mixing stirring shaft and the distribution stirring shaft are respectively provided with corresponding screening stirring teeth, mixing stirring teeth and distribution stirring teeth in a circumferential array outside.

2. The solid waste sample collection device according to claim 1, characterized in that: The cavity cover, the screening cavity, the mixing cavity and the distribution cavity are correspondingly connected by threads.

3. The solid waste sample collection device according to claim 1, characterized in that: The diameter of the screening net matches the required diameter of the solid waste sample particles.

4. The solid waste sample collection device according to claim 1, characterized in that: The volumes of the storage bins are consistent, the chambers of the storage bins are connected to the chambers of the distribution chamber, and the bottoms of the storage bins are movable end covers that can be opened and closed.

5. The solid waste sample collection device according to claim 1, characterized in that: The crank handle is connected to the corresponding bearings between the chamber cover; the screening agitator shaft, the mixing agitator shaft and the distribution agitator shaft are connected to the corresponding bearings of the chamber bottoms of the corresponding screening chamber, the mixing chamber and the distribution chamber respectively.

6. The solid waste sample collection device according to claim 1, characterized in that: The bottom ends of the crank handle, screening stirring shaft and mixing stirring shaft are provided with connecting keys with corresponding polygonal cross-sections along the axis, and the top ends of the screening stirring shaft, mixing stirring shaft and distribution stirring shaft are provided with key grooves corresponding to and matching the connecting keys along the axis.

7. The solid waste sample collection device according to claim 1, characterized in that: Annular bosses are respectively provided at the bottom center positions of the cavity cover, the screening cavity and the mixing cavity, and the inner edge contours of the annular bosses correspond to the outer edge contours of the screening stirring shaft, the mixing stirring shaft and the distribution stirring shaft.

8. The solid waste sample collection device according to claim 1, characterized in that: The screening stirring teeth are rod bodies, the mixing stirring teeth are fishbone-shaped, and the distributing stirring teeth are plate bodies.

9. The solid waste sample collection device according to claim 1, characterized in that: The outer circumferential array of the mixing chamber or the distribution chamber has a plurality of legs which are hinged to the mixing chamber or the distribution chamber and can be extended and retracted along the axial direction thereof, and the corresponding positions outside the screening chamber are respectively provided with fixing buckles for fixing the legs.

10. The solid waste sample collection device according to claim 9, characterized in that: The cross section corresponding to the hinge axis where the support leg is hinged to the mixing chamber or the distribution chamber is polygonal.

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