Multideck automatic sample splitter

Abstract

The utility model discloses a multilayer automatic sample dividing screen, including support base plate and article top plate, the top of support base plate is provided with article top plate, and the four corner positions between article top plate and support base plate are combined together through spring support structure, the bottom middle part of article top plate is fixedly installed with vibration motor body, the top middle part of article top plate is placed with multistage screening assembly. Advantageous effects lie in: the utility model discloses that the top middle part of article top plate is placed with multistage screening assembly, and multistage screening assembly is provided with multilayer screen frame stacked together, and the screen hole diameter of each layer screen frame decreases from top to bottom in turn, thereby the working vibration excitation mode of vibration motor body at the bottom of article top plate, can realize multilayer automatic screening to material through multistage screening assembly, and the multilayer automatic screening mode of material is simple and easy to realize, is favorable to the promotion screening efficiency and alleviates the working strength of operating personnel.

Description

Technical Field

[0001] This utility model relates to the field of material screening equipment technology, specifically to a multi-layer automatic sample sieve. Background Technology

[0002] In many industries such as chemical, food, mining, and building materials, it is often necessary to sample and sieve granular or powdered materials to obtain materials of different particle size grades to meet the needs of subsequent production, experimentation, or testing. Currently, most common sample sieves on the market are single-layer or multi-layer structures that are manually or semi-automatically operated.

[0003] Manual sorting sieves require operators to continuously shake the sieve body, which is not only labor-intensive but also has low sorting efficiency. Furthermore, it is difficult for operators to maintain consistent shaking force, frequency, and angle, which can lead to unstable sorting accuracy and affect the subsequent use of materials. In addition, when designing the sieve, the mesh size of each layer is usually fixed, and the sieves of multi-layer sorting sieves are mostly fixedly connected. When it is necessary to replace the sieve with a different mesh size to adapt to the screening requirements of different materials, the disassembly and installation process is complicated, time-consuming, and affects the production schedule. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer automatic sample sorting sieve to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The multi-layer automatic sample sorting sieve provided by this utility model includes a supporting base plate and a top plate for placing objects. The top plate for placing objects is provided above the top surface of the supporting base plate, and the top plate for placing objects and the supporting base plate are combined together at the four corners by a spring support structure. A vibration motor body is fixedly installed in the middle of the bottom surface of the top plate for placing objects, and the bottom of the vibration motor body is suspended above the top surface of the supporting base plate.

[0007] A multi-stage screening assembly is placed in the middle of the top surface of the storage plate, which is used to achieve multi-level automatic screening of materials by means of vibration of the vibrating motor body.

[0008] The top surface of the storage plate is vertically fixed with support guide columns at the four corners. The edges and corners of the multi-stage screening assembly are equipped with disassembly and assembly components. The multi-stage screening assembly can be detachably combined with the support guide columns through the disassembly and assembly components to achieve smooth and limited stacking of the multi-stage screening assembly on the top of the storage plate.

[0009] Preferably, both sides of the bottom surface of the supporting base plate are fixed with raised square tubes along the longitudinal direction.

[0010] Preferably, the multi-stage screening assembly includes a collection bin, a screen frame, and a dustproof top cover. Both the collection bin and the screen frame are open-top boxes. The collection bin is positioned at the center of the top surface of the storage top plate. There are multiple screen frames, all stacked on top of the collection bin. The bottom surface of each screen frame is evenly distributed with screen holes, and the diameter of the screen holes in each layer of screen frames decreases from top to bottom. The dustproof top cover is an open-bottom box that is stacked and fastened on top of the highest-positioned screen frame. At the same time, the corners of the collection bin, the screen frame, and the dustproof top cover are all combined with the corresponding support guide posts through the disassembly and assembly assembly.

[0011] Preferably, the top surfaces of both the collection bin and the screen frame are covered and fixed with sealing gaskets made of cushioning material.

[0012] Preferably, the material collection bin, the screen frame, and the dustproof top cover are all fitted with handles on both sides for easy gripping.

[0013] Preferably, the number of screen frames is at least three layers, and when the multiple layers of screen frames, the dustproof top cover, and the collection bin are stacked on top of the storage top plate, the top of the support guide column is not lower than the top of the dustproof top cover.

[0014] Preferably, each of the disassembly and assembly components includes a wing plate and a mating sleeve. The wing plates are fixedly mounted horizontally on both sides of the material collection bin, the screen frame, and the dustproof top cover. Each wing plate has a mating hole vertically opened on its top. The mating sleeve is coaxially fixed to the top surface of the wing plate at the position outside the mating hole. The support guide columns pass through the mating holes and the mating sleeves at the corresponding corner positions in a coaxial sliding fit. Each mating sleeve has a horizontally opened mounting hole along the radial direction on its outer side. All mounting holes are through holes. At the same time, each mounting hole is coaxially fitted with a clamping stud in a threaded fit.

[0015] Preferably, the inner end of each clamping stud is coaxially fixed with an elastic pressure block whose outer diameter is smaller than that of the mounting hole.

[0016] Preferably, the outer ends of the clamping studs are all coaxially configured with end heads for easy handling.

[0017] Preferably, all the elastic blocks are circular rubber blocks, and all the ends are knurled handles.

[0018] In practical application, the multi-level automatic screening sieve described above, with its multi-stage screening assembly placed in the center of the top surface of the storage plate, comprises multiple stacked sieve frames. The diameter of the sieve holes in each layer decreases sequentially from top to bottom. By utilizing the vibration of the vibrating motor at the bottom of the storage plate, multi-level automatic screening of materials can be achieved through the multi-stage screening assembly. This multi-level automatic screening method is simple and easy to implement, improving screening efficiency and reducing the workload of operators. Furthermore, the multi-level screening assembly is equipped with a dustproof cover. The screen frame is stacked and secured at its highest position. During the screening process, the dustproof top cover shields the top of the screen frame, enabling multi-layer screening of materials in a closed environment. This prevents material from scattering and wasting, and also helps prevent dust pollution in the working environment. Furthermore, the elastic block is pressed against the periphery of the support guide column by the vertical sliding engagement of the fitting sleeve of the assembly and the horizontal tightening of the clamping stud. This allows the corners of the collection bin, the screen frame, and the dustproof top cover to be combined with the corresponding support guide columns, thereby enabling the collection bin to be assembled. The screen frame and the dustproof top cover are stacked and assembled on the top of the storage plate. This stacking arrangement of the collection bin, screen frame, and dustproof top cover on the top of the storage plate is simple and easy to implement, facilitating the rapid stacking and assembly of the collection bin, screen frame, and dustproof top cover on the top of the storage plate for multi-layer automatic material screening. Furthermore, simply loosening the clamping stud allows the mating sleeve to slide axially upwards from the top of the support guide post, enabling the dustproof top cover, screen frame, and collection bin to be quickly and sequentially removed from the top of the storage plate. The top disassembly method is simple and easy to implement, which facilitates the subsequent removal of the dustproof top cover, the screen frame, and the collection bin from the top of the storage plate, and the screened material can be cleaned and removed separately. Since the multi-layered screen frames are detachably assembled and smoothly positioned on the top of the storage plate by means of the disassembly and assembly assembly and the support guide column, the appropriate number of stacked screen frames and the appropriate screen hole diameter can be selected according to actual use needs. The disassembly and assembly assembly is used to smoothly position and stack the screen frames on the top of the storage plate, which improves the flexibility and applicability of the multi-stage screening assembly.

[0019] The beneficial effects are as follows: 1. This utility model places a multi-stage screening component in the middle of the top surface of the storage top plate. The multi-stage screening component is equipped with multiple layers of screen frames stacked together, and the diameter of the screen holes of each layer of screen frames decreases from top to bottom. By means of the vibration of the vibrating motor body at the bottom of the storage top plate, the multi-stage screening component can realize the multi-layer automatic screening of materials. The multi-layer automatic screening of materials is simple and easy to implement, which helps to improve screening efficiency and reduce the workload of operators.

[0020] 2. The top of the multi-stage screening assembly is equipped with a dustproof cover, and the dustproof cover is stacked and fastened on the top of the screen frame at the highest position. In this way, by using the dustproof cover to cover the top of the screen frame during the screening process, the material can be screened in multiple layers in a closed environment, avoiding the waste of material flying outwards, and also helping to prevent dust pollution in the working environment.

[0021] 3. By using the vertical sliding fit of the assembly sleeve and the support guide column of the disassembly and assembly components, and the horizontal tightening of the clamping studs to press the elastic block against the outer periphery of the support guide column, the corners of the collection bin, screen frame, and dust cover can be combined with the corresponding support guide columns. This allows the collection bin, screen frame, and dust cover to be stacked on top of the storage plate. The stacking and combination of the collection bin, screen frame, and dust cover on the top of the storage plate is simple and easy to implement, which facilitates the rapid stacking and combination of the collection bin, screen frame, and dust cover on the top of the storage plate for multi-layer automatic screening of materials.

[0022] 4. Simply loosen the clamping studs to allow the mating sleeve to slide upwards axially and separate from the top of the support guide column. This allows the dust cover, screen frame, and collection bin to be quickly and sequentially removed from the top of the storage plate. The method of separating the dust cover, screen frame, and collection bin from the top of the storage plate is simple and easy to achieve, which facilitates the subsequent cleaning and removal of the screened material after the dust cover, screen frame, and collection bin are removed from the top of the storage plate.

[0023] 5. Since the multi-layer screen frames can be detachably assembled and smoothly positioned on the top of the storage plate by means of disassembly and assembly components and support guide columns, the appropriate number of screen frames and the appropriate screen hole diameter can be selected according to actual use needs. The disassembly and assembly components can be used to smoothly position and stack the screen frames on the top of the storage plate, which improves the flexibility and applicability of the multi-stage screening components. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an overall isometric schematic diagram of this utility model. Figure 1 ;

[0026] Figure 2 This is an overall isometric schematic diagram of this utility model. Figure 2 ;

[0027] Figure 3 This is a utility model Figure 1 Cross-section diagram Figure 1 ;

[0028] Figure 4 This is a utility model Figure 3 A magnified view of part A;

[0029] Figure 5 This is a utility model Figure 1 Cross-section diagram Figure 2 ;

[0030] Figure 6 This is a utility model Figure 5 A magnified view of section B;

[0031] Figure 7 This is a utility model Figure 1 Front view diagram;

[0032] Figure 8 This is a utility model Figure 1 A left-side view diagram.

[0033] The annotations in the attached figures are explained as follows:

[0034] 1. Multi-stage screening assembly; 101. Dustproof top cover; 102. Screen frame; 103. Collection bin; 104. Lifting handle; 105. Sealing gasket; 106. Screen holes; 2. Storage top plate; 3. Spring support structure; 4. Support base plate; 401. Elevated square tube; 5. Support guide column; 6. Disassembly and assembly assembly; 601. End; 602. Clamping stud; 603. Mating sleeve; 604. Wing plate; 605. Mounting hole; 606. Mating hole; 607. Elastic pressure block; 7. Vibration motor body. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] See Figures 1-8 As shown, this utility model provides a multi-layer automatic sample sorting sieve, including a supporting base plate 4 and a top plate 2. The top plate 2 is provided above the top surface of the supporting base plate 4, and the top plate 2 and the supporting base plate 4 are connected together at the four corners by spring support structures 3. Preferably, the spring support structure 3 includes two mounting plates and a support column, which is vertically fixed to the lower mounting plate and its top end passes through the upper mounting plate in a sliding fit. At the same time, a spring is coaxially sleeved on the part of the support column located between the upper and lower mounting plates. An end cap is coaxially fixed to the top of the support column. A vibration motor body 7 is fixedly installed in the middle of the bottom surface of the top plate 2, and the bottom of the vibration motor body 7 is suspended above the top surface of the supporting base plate 4. The advantage of this arrangement is that it is convenient to use the vibration motor body 7 to work in conjunction with the spring support structures 3 at the four corners to generate the excitation force required for screening materials.

[0037] See Figures 1-8 As shown, a multi-stage screening assembly 1 is placed in the center of the top surface of the storage top plate 2. This assembly, driven by the vibration of the vibrating motor body 7, automatically screens materials in multiple layers. Specifically, the multi-stage screening assembly 1 includes a collection bin 103, screen frames 102, and a dustproof top cover 101. Both the collection bin 103 and the screen frames 102 are open-top boxes. The collection bin 103 is positioned in the center of the top surface of the storage top plate 2. Multiple screen frames 102 are stacked on top of the collection bin 103. Screen holes 106 are evenly distributed on the bottom surface of each screen frame 102, with the diameter of the screen holes 106 decreasing from top to bottom. The dustproof top cover 101 is the bottom... The open box is stacked on top of the screen frame 102 at the highest position. At the same time, the corners of the collection bin 103, screen frame 102 and dust cover 101 are all combined with the corresponding support guide column 5 by the disassembly and assembly assembly 6. The purpose of this arrangement is that, firstly, by using the vibration motor body 7 at the bottom of the storage top plate 2 to work and excite, the multi-level automatic screening of materials can be achieved through the multi-level screening assembly 1. The multi-level automatic screening of materials is simple and easy to implement. At the same time, by using the dust cover 101 to cover the top of the screen frame 102 during the screening process, the multi-level screening operation of materials can be achieved in a closed environment, avoiding the situation of materials flying outward and being wasted.

[0038] See Figures 1-8As shown, support guide columns 5 are vertically fixed at the four corners of the top surface of the storage top plate 2, and disassembly and assembly components 6 are assembled at the corners of the multi-stage screening assembly 1. The multi-stage screening assembly 1 can be detachably assembled with the support guide columns 5 through the disassembly and assembly components 6, so as to realize the smooth positioning and stacking of the multi-stage screening assembly 1 on the top of the storage top plate 2. Specifically, the disassembly and assembly components 6 include wing plates 604 and mating sleeves 603, collection bins 103, screen frames 102, and dustproof top covers. Wing plates 604 are fixed horizontally on both sides and at the front and rear positions of 101. Each wing plate 604 has a vertically opening mating hole 606 on its top. A mating sleeve 603 is coaxially fixed to the top surface of the wing plate 604 around the mating hole 606. Each support guide post 5 passes through the mating hole 606 and mating sleeve 603 at the corresponding corner position in a coaxial sliding engagement. Each mating sleeve 603 has a horizontally opening radially on its outer side, and all mounting holes 605 are through holes. Each mounting hole 605 has a coaxially threaded clamping stud 602 inserted into it. The purpose of this arrangement is to first, by disassembling and assembling the mating sleeve 603 of the assembly 6 and the support guide post 5 in a vertical sliding engagement with the support guide post 5, and then horizontally tightening the clamping stud 602 to press the elastic block 607 against the support guide post 5, thereby combining the corner positions of the collection bin 103, screen frame 102, and dustproof top cover 101 with the corresponding support guide post 5. This allows the collection bin to be assembled with the support guide post 5 at the corresponding position. The hopper 103, screen frame 102, and dust cover 101 are stacked and combined on the top of the storage top plate 2. At the same time, by simply loosening the clamping stud 602, the mating sleeve 603 can slide upward along the axis and detach from the top of the support guide post 5. In this way, the dust cover 101, screen frame 102, and collection hopper 103 can be quickly and sequentially removed from the top of the storage top plate 2. The combination and disassembly of the dust cover 101, screen frame 102, and collection hopper 103 on the top of the storage top plate 2 is simple and easy to implement.

[0039] See Figures 1-6 As shown, the following optimizations have been made to this application. Specifically, both sides of the bottom surface of the support base plate 4 are longitudinally fixed with raised square tubes 401 to provide stable elevation support for the support base plate 4. Optionally, the top surfaces of the collection bin 103 and the screen frame 102 are covered and fixed with cushioning material sealing gaskets 105 to seal the contact points between the collection bin 103 and the screen frame 102, and between the screen frames 102, while also providing an elastic cushioning effect. Further optionally, the collection bin 103, the screen frame 102, and the dustproof top cover 101 are all horizontally installed with handles 104 for easy gripping on both sides, so that the collection bin 103 and the screen frame 102 can be lifted smoothly in sequence using the handles 104.

[0040] See Figures 1-8As shown, the number of screen frames 102 is at least three layers. When the multi-layer screen frames 102, dustproof top cover 101, and collection bin 103 are stacked on the top of the storage plate 2, the top of the support guide column 5 is not lower than the top of the dustproof top cover 101. With this setting, the appropriate number of stacked screen frames 102 and the appropriate screen hole diameter 106 can be selected and combined according to actual use needs. The screen frames 102 can be smoothly stacked on the top of the storage plate 2 with the help of the disassembly and assembly assembly 6. At the same time, it is also easy to ensure that the support guide column 5 has sufficient working length. Optionally, each clamping stud 602 has an inner end coaxially fixed with an elastic pressure block 607, the outer diameter of which is smaller than the diameter of the mounting hole 605. The outer ends of each clamping stud 602 are coaxially configured with end heads 601 for easy gripping. This arrangement firstly facilitates improved locking stability and prevents damage to the surface of the clamping stud 602 by pressing the elastic pressure block 607 against its periphery. Secondly, it facilitates rotation of the clamping stud 602 by applying force through gripping the end head 601. Alternatively, the elastic pressure blocks 607 are all circular rubber blocks, and the end heads 601 are knurled handles. This arrangement ensures that the elastic pressure blocks 607 have good and stable elastic deformation performance, and also allows the end heads 601 to be easily gripped and applied force by the operator.

[0041] With the above structure, in practical use, a multi-stage screening assembly 1 is placed in the middle of the top surface of the top plate 2. The multi-stage screening assembly 1 has multiple layers of screen frames 102 stacked together, and the diameter of the screen holes 106 of each layer of screen frames 102 decreases from top to bottom. By means of vibration from the vibrating motor body 7 at the bottom of the top plate 2, multi-stage automatic screening of materials can be achieved through the multi-stage screening assembly 1. The multi-stage automatic screening method is simple and easy to implement, which helps to improve screening efficiency and reduce the workload of operators. At the same time, a dustproof top cover 101 is provided on the top of the multi-stage screening assembly 1, and the dustproof top cover 101 is stacked and fastened at the highest position. The top of the screen frame 102 is covered by a dustproof top cover 101 during the screening process, enabling multi-layer screening of materials in a closed environment. This avoids material scattering and waste, and also helps prevent dust pollution in the working environment. Furthermore, by using the mating sleeve 603 of the assembly 6 to vertically slide against the support guide column 5 and horizontally tightening the clamping stud 602 to press the elastic block 607 against the periphery of the support guide column 5, the corners of the collection bin 103, screen frame 102, and dustproof top cover 101 can be combined with the corresponding support guide columns 5. This allows the collection bin 103 and screen frame 102 to be integrated. The dust cover 101 and the collection bin 103 are stacked on top of the storage top plate 2. The stacking and combination of the collection bin 103, screen frame 102, and dust cover 101 on the top of the storage top plate 2 is simple and easy to implement. This facilitates the quick stacking and combination of the collection bin 103, screen frame 102, and dust cover 101 on the top of the storage top plate 2 for multi-layer automatic screening of materials. At the same time, by simply loosening the clamping stud 602, the mating sleeve 603 can slide upward axially from the top of the support guide post 5, thereby enabling the dust cover 101, screen frame 102, and collection bin 103 to be quickly and sequentially removed from the top of the storage top plate 2. The top of the top plate 2 is easy to disassemble, which facilitates the subsequent removal of the dustproof top cover 101, screen frame 102 and collection bin 103 from the top of the top plate 2 for separate cleaning and removal of the screened material. Since the multi-layer screen frames 102 can be detachably combined with the support guide column 5 through the disassembly and assembly assembly 6 and are successfully stacked on the top of the top plate 2, the appropriate number of stacked screen frames 102 and the appropriate screen hole diameter 106 can be selected according to actual use needs. The disassembly and assembly assembly 6 is used to successfully stack them on the top of the top plate 2 for use, which improves the flexibility and applicability of the multi-stage screening assembly 1.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multi-layer automatic sample sorting sieve, comprising a supporting base plate (4) and a top plate for placing samples (2), characterized in that: The top surface of the supporting base plate (4) is provided with the storage top plate (2), and the storage top plate (2) and the supporting base plate (4) are combined together by spring support structure (3) at the four corners. The vibration motor body (7) is fixedly installed in the middle of the bottom surface of the storage top plate (2), and the bottom of the vibration motor body (7) is suspended above the top surface of the supporting base plate (4). A multi-stage screening assembly (1) is placed in the middle of the top surface of the top plate (2) to achieve multi-level automatic screening of materials by means of the vibration of the vibrating motor body (7) through the multi-stage screening assembly (1). The top surface of the storage plate (2) is vertically fixed with support guide columns (5) at the four corners. The multi-stage screening assembly (1) is equipped with disassembly and assembly assembly (6) at the corners. The multi-stage screening assembly (1) can be disassembled and assembled with the support guide columns (5) through the disassembly and assembly assembly (6) to realize the smooth positioning and stacking of the multi-stage screening assembly (1) on the top of the storage plate (2).

2. The multi-layer automatic sample sorting sieve according to claim 1, characterized in that: Both sides of the bottom surface of the supporting base plate (4) are fixed with raised square tubes (401) along the longitudinal direction.

3. The multi-layer automatic sample sorting sieve according to claim 1 or 2, characterized in that: The multi-stage screening assembly (1) includes a collection bin (103), a screen frame (102), and a dustproof top cover (101). The collection bin (103) and the screen frame (102) are both open-top boxes. The collection bin (103) is positioned at the center of the top surface of the storage top plate (2). There are multiple screen frames (102), all of which are stacked in multiple layers on top of the collection bin (103). The bottom surface of each screen frame (102) is evenly distributed with... The diameter of the sieve holes (106) of each layer of the sieve frame (102) decreases from top to bottom. The dustproof top cover (101) is a box with an open bottom and is stacked on top of the sieve frame (102) at the highest position. At the same time, the corners of the collection bin (103), the sieve frame (102) and the dustproof top cover (101) are all combined with the corresponding support guide column (5) through the disassembly and assembly assembly (6).

4. The multi-layer automatic sample sorting sieve according to claim 3, characterized in that: The top surfaces of both the collection bin (103) and the screen frame (102) are covered with sealing gaskets (105) made of cushioning material.

5. The multi-layer automatic sample sorting sieve according to claim 4, characterized in that: The material collection bin (103), the screen frame (102), and the dustproof top cover (101) are all equipped with handles (104) for easy gripping on both sides of the center.

6. The multi-layer automatic sample sorting sieve according to claim 5, characterized in that: The number of the screen frames (102) is at least three layers, and when the multiple layers of the screen frames (102) and the dustproof top cover (101) and the collection bin (103) are stacked on the top of the storage plate (2), the top of the support guide column (5) is not lower than the top of the dustproof top cover (101).

7. The multi-layer automatic sample sorting sieve according to claim 4, 5 or 6, characterized in that: Each of the disassembly and assembly components (6) includes a wing plate (604) and a mating sleeve (603). The wing plate (604) is fixedly placed flat on both sides of the material collection bin (103), the screen frame (102), and the dustproof top cover (101). The top of each wing plate (604) is vertically provided with a mating hole (606). The mating sleeve (603) is coaxially fixed on the top surface of the wing plate (604) at the position outside the mating hole (606). The support guide column (5) passes through the mating hole (606) and the mating sleeve (603) at the corresponding corner position in a coaxial sliding fit. The outer side of each mating sleeve (603) is provided with a mounting hole (605) in a radial horizontal direction. The mounting holes (605) are all through holes. At the same time, each mounting hole (605) is coaxially inserted with a clamping stud (602) in a threaded fit.

8. The multi-layer automatic sample sorting sieve according to claim 7, characterized in that: The inner end of each clamping stud (602) is coaxially fixed with an elastic pressure block (607) whose outer diameter is smaller than that of the mounting hole (605).

9. The multi-layer automatic sample sorting sieve according to claim 8, characterized in that: The outer ends of the clamping studs (602) are all coaxially configured with end heads (601) for easy handling.

10. The multi-layer automatic sample sorting sieve according to claim 9, characterized in that: The elastic blocks (607) are all circular rubber blocks, and the ends (601) are all knurled handles.

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