A multi-stage sifter for soil testing

Abstract

The utility model discloses a multistage screening device for soil detection, including the bendable screen cloth, two opposite sides of screen cloth are first side and second side, install connecting part on first side, first side can be connected with second side through connecting part, the first side and second side of screen cloth are connected, and the screen cloth is cylindrical, when the first side and second side of screen cloth are separated, and the screen cloth is flat plate; The screen cloth surface along the direction of first side is provided with the screen hole of different aperture respectively, and soil is sequentially screened in different aperture screen hole on the surface of screen cloth. By setting, can dual -purpose screen cloth, can be used as flat sieve, can also be rolled into cylinder sieve use, can satisfy different characteristics soil and different screening needs, thereby reduce the number of carrying tools, reduce the carrying burden.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology. Specifically, it relates to a multi-stage sieve for soil testing. Background Technology

[0002] Soil testing includes multiple items, one of which is the determination of soil particle size. When determining soil particle size, soil samples must first be collected, crushed, turned over, and foreign objects such as gravel, sand, and plant residues removed. After the samples are air-dried, they need to be sieved again.

[0003] Soil sampling is usually conducted outdoors, requiring the carrying of various equipment, including sieves. Due to the need for multi-stage sieving, sieves with different mesh sizes are required. Furthermore, due to differences in soil characteristics, different types of sieves may be needed to meet different sieving requirements, further increasing the burden on outdoor operations. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a multi-stage sieve for soil testing that can be used as both a flat sieve and a drum sieve, so as to reduce the carrying burden and increase the adaptability of sieving.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multi-stage sieve for soil testing, comprising a flexible and elastic screen, wherein two opposite sides of the screen are a first side and a second side, a connecting component is installed on the first side, and the first side can be connected to the second side through the connecting component; when the first side and the second side of the screen are connected, the screen is cylindrical, and when the first side and the second side of the screen are separated, the screen is flat; the surface of the screen is provided with sieve holes of different diameters along the direction of the first side, and the soil is sequentially sieved through the sieve holes of different diameters on the surface of the screen for multi-stage sieving.

[0006] The aforementioned multi-stage sieve for soil testing includes a connecting component comprising a first component mounted on a first side and a second component mounted on a second side, wherein the first component and the second component can be connected to each other.

[0007] In the aforementioned multi-stage sieve for soil testing, both the first component and the second component are straight, rigid components. The first component is arranged along the entire length of the first side, and the second component is arranged along the entire length of the second side.

[0008] The above-mentioned multi-stage sieve for soil testing has two opposing sides located between the ends of the first and second sides, which are the third and fourth sides of the sieve. An edge fixing component is installed on both the third and fourth sides, and the edge fixing component fixes the third and fourth sides to keep them straight when the sieve is unfolded into a flat plate shape.

[0009] The aforementioned multi-stage sieve for soil testing includes an edge fixing component comprising a fixing block, a connecting plate, a rigid rod, and an elastic rod. Multiple fixing blocks are arranged at equal intervals along the side length on both the third and fourth sides, with adjacent fixing blocks having a gap. For any two adjacent fixing blocks: one end of the connecting plate is hinged to one fixing block, and the other end of the connecting plate is hinged to the other fixing block. The hinge axis of the connecting plate is perpendicular to the thickness direction of the sieve. A through hole is formed within the fixing block along its side length, and the rigid rod passes through the through hole. Adjacent rigid rods are connected by an elastic rod.

[0010] In the aforementioned multi-stage sieve for soil testing, the length of the rigid rod is greater than the distance between two adjacent fixed blocks, and the length of the elastic rod is less than or equal to the distance between two adjacent fixed blocks.

[0011] The above-mentioned multi-stage sieve for soil testing has guide fins evenly spaced on one side wall of the sieve, and a stirring plate arranged along the side length of the first side on the other side wall of the sieve.

[0012] In the aforementioned multi-stage sieve for soil testing, both the guide fins and the stirring plate extend in a direction away from the surface of the sieve.

[0013] The aforementioned multi-stage sieve for soil testing also includes a storage box, which is positioned directly below the sieve when the soil is sieved using the sieve. A partition is provided inside the sieve, which divides the space inside the storage box into multiple graded storage spaces.

[0014] In the aforementioned multi-stage sieve for soil testing, support rods are hinged to both ends of the storage box. A horizontal guide wheel is rotatably mounted on the side wall of the support rod facing the inside of the storage box, and a vertical guide wheel is rotatably mounted on the free end face of the support rod. When the sieve is sieving, the edge of the sieve surface overlaps the wheel surface of the horizontal guide wheel, and the thick edge of the sieve abuts against the wheel surface of the vertical guide wheel.

[0015] The technical solution of this utility model has achieved the following beneficial technical effects:

[0016] By setting up a dual-purpose screen, it can be used as a flat screen or rolled into a cylindrical screen, which can meet the needs of different soil characteristics and different screening requirements, thereby reducing the number of tools to carry and reducing the burden of carrying them. Attached Figure Description

[0017] Figure 1 A schematic diagram of one side of the sieve structure in the flat sieve state of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0019] Figure 3 A schematic diagram of the structure of the screen in the flat screen state of this utility model;

[0020] Figure 4 A three-dimensional structural diagram of the screen of this utility model in the form of a drum screen;

[0021] Figure 5 A schematic diagram of the connecting component of this utility model;

[0022] Figure 6 A three-dimensional structural diagram of the storage box of this utility model.

[0023] The reference numerals in the figure are as follows: 1-screen; 11-first side; 12-second side; 13-third side; 14-fourth side; 2-connecting component; 21-first component; 22-second component; 3-edge fixing component; 31-fixing block; 32-connecting plate; 33-rigid rod; 34-elastic rod; 4-guide fins; 5-stirring plate; 6-storage box; 7-partition; 8-support rod; 9-horizontal guide wheel; 10-vertical guide wheel. Detailed Implementation

[0024] This embodiment describes a multi-stage sieve for soil testing, such as... Figure 1 , Figure 3 and Figure 4 As shown, the screen includes a flexible and elastic screen 1. The screen 1 has two opposite sides, a first side 11 and a second side 12. Different apertures are formed on the surface of the screen 1 along the direction of the first side 11. Soil passes through these apertures sequentially for multi-stage sieving. The screen is made of stainless steel sheet with punched holes to form the multi-stage apertures. The elasticity of the stainless steel sheet allows it to be rolled into a cylindrical shape or unfolded into a flat plate. Alternatively, a frame can be made using an elastic material, and the multi-stage wire mesh can be fixed to the frame, thus forming a multi-stage screen. The screen 1 can also be composed of multiple pieces of material hinged together in parallel.

[0025] like Figure 3-4As shown, a connecting component 2 is installed on the first side 11. The first side 11 can be connected to the second side 12 through the connecting component 2. When the first side 11 and the second side 12 of the screen 1 are connected, the screen 1 is cylindrical; when the first side 11 and the second side 12 of the screen 1 are separated, the screen 1 is flat. Specifically, during installation, the first component 21 of the connecting component 2 is installed on the first side 11, and the second component 22 of the connecting component 2 is installed on the second side 12, as shown. Figure 5 As shown, the first component 21 and the second component 22 are plug-in connectors that can be inserted and locked together, or connectors that are fixed by pins or screws after insertion, or structures with positioning and locking functions in the prior art. Figure 4 As shown, the first component 21 and the second component 22 are both straight rigid components, specifically straight steel bars. The first component 21 is arranged along the entire length of the first side 11, and the second component 22 is arranged along the entire length of the second side 12. They can fix and support the first side 11 and the second side 12 to keep them from deforming. When a frame-type screen is used, if the first side 11 and the second side 12 have high rigidity, the connecting component 2 may not need to be arranged along the entire length.

[0026] like Figure 3 As shown, the two sides located between the ends of the first side 11 and the second side 12 and opposite to each other are the third side 13 and the fourth side 14 of the screen 1; edge fixing parts 3 are installed on the third side 13 and the fourth side 14, and the edge fixing parts 3 fix the third side 13 and the fourth side 14 to keep them straight when the screen 1 is unfolded into a flat plate shape.

[0027] like Figure 2As shown, the edge fixing component 3 includes a fixing block 31, a connecting plate 32, a rigid rod 33, and an elastic rod 34. Multiple fixing blocks 31 are arranged at equal intervals along the side length on both the third side 13 and the fourth side 14, and adjacent fixing blocks 31 have a gap. For any two adjacent fixing blocks 31, one end of the connecting plate 32 is hinged to one fixing block 31, and the other end of the connecting plate 32 is hinged to another fixing block 31. The hinge axis of the connecting plate 32 is set perpendicular to the thickness direction of the screen 1. A through hole is opened in the fixing block 31 along the side length direction, and the rigid rod 33 passes through the through hole. Two adjacent rigid rods 33 are connected by the elastic rod 34. The length of the rigid rod 33 is greater than the gap between two adjacent fixing blocks 31, and the length of the elastic rod 34 is less than or equal to the gap between two adjacent fixing blocks 31. The rigid rod 33 and the elastic rod 34 are fixedly connected in sequence to form a long rod. When the two ends of the rigid rod 33 are inserted into the two fixed blocks 31 respectively, the two fixed blocks 31 can be fixed to prevent relative radial displacement, thereby supporting the third side 13 and the fourth side 14. When the rigid rod 33 is pulled out, the entire long rod moves relative to the fixed blocks 31. The elastic rod 34 has radial bending elasticity. When the elastic rod is located between the two fixed blocks 31, the fixed blocks 31 can move relative to each other in the radial direction, so that the screen 1 can be rolled into a cylindrical shape.

[0028] like Figure 1 , Figure 3 and Figure 4 As shown, guide fins 4 are evenly spaced on one side wall of the screen 1, and a stirring plate 5 is arranged on the other side wall of the screen 1 along the side length direction of the first side edge 11. Both the guide fins 4 and the stirring plate 5 extend in a direction away from the surface of the screen 1. The screen 1 can be rolled into a cylindrical shape in either direction. In the flat screen state, sieving can be performed using either side, and the guide fins 4 and the stirring plate 5 provide different stirring effects.

[0029] like Figure 6As shown, in practical applications, when using the sieve 1 to sieve the soil, a storage box 6 is set directly below the sieve 1. A partition 7 is set inside the sieve 1, which divides the space inside the storage box 6 into multiple graded storage spaces. Soil of different particle sizes falls into the corresponding storage space. Support rods 8 are hinged to both ends of the storage box 6. A horizontal guide wheel 9 is rotatably installed on the side wall of the support rod 8 facing the inside of the storage box 6. A vertical guide wheel 10 is rotatably installed on the free end face of the support rod 8. When the sieve 1 is sieving, the edge of the sieve 1 overlaps the wheel surface of the horizontal guide wheel 9, and the thick edge of the sieve 1 abuts against the wheel surface of the vertical guide wheel 10. In use, pull the support rod 8 upwards. The connection between the support rod 8 and the storage box 6 is a tight fit that can stop at any position, so that the support rod 8 on one side is lower than the support rod 8 on the other side. The end of the screen 1 with the smaller aperture is placed at a higher position, and the other end is placed at a lower position. In the flat screen state, manually shake the screen 1 left and right to perform screening. In the drum screen state, adjust the distance between the two support rods 8 so that the horizontal guide wheel 9 can support the drum screen. The drum screen can be rotated manually or driven by an electric structure in the existing technology.

[0030] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A multi-stage sieve for soil testing, characterized in that, The screen includes a flexible screen (1), wherein the two opposite sides of the screen (1) are a first side (11) and a second side (12). A connecting part (2) is installed on the first side (11), and the first side (11) can be connected to the second side (12) through the connecting part (2). When the first side (11) and the second side (12) of the screen (1) are connected, the screen (1) is cylindrical. When the first side (11) and the second side (12) of the screen (1) are separated, the screen (1) is flat. The surface of the screen (1) is provided with screen holes of different diameters along the direction of the first side (11). The soil passes through the screen holes of different diameters in sequence on the surface of the screen (1) for multi-stage screening.

2. The multi-stage sieve for soil testing according to claim 1, characterized in that, The connecting component (2) includes a first component (21) mounted on a first side (11) and a second component (22) mounted on a second side (12), the first component (21) and the second component (22) being able to be connected to each other.

3. A multi-stage sieve for soil testing according to claim 2, characterized in that, The first component (21) and the second component (22) are both straight rigid components. The first component (21) is arranged along the entire length of the first side (11), and the second component (22) is arranged along the entire length of the second side (12).

4. The multi-stage sieve for soil testing according to claim 1, characterized in that, The two sides located between the ends of the first side (11) and the second side (12) and opposite each other are the third side (13) and the fourth side (14) of the screen (1); edge fixing components (3) are installed on the third side (13) and the fourth side (14), and the edge fixing components (3) fix the third side (13) and the fourth side (14) to keep them straight when the screen (1) is unfolded into a flat plate.

5. A multi-stage sieve for soil testing according to claim 4, characterized in that, The edge fixing component (3) includes a fixing block (31), a connecting plate (32), a rigid rod (33), and an elastic rod (34). Multiple fixing blocks (31) are arranged at equal intervals along the side length on the third side (13) and the fourth side (14). Adjacent fixing blocks (31) have a gap. For any two adjacent fixing blocks (31): one end of the connecting plate (32) is hinged to one fixing block (31), and the other end of the connecting plate (32) is hinged to another fixing block (31). The hinge axis of the connecting plate (32) is set perpendicular to the thickness direction of the screen (1). A through hole is opened in the fixing block (31) along the side length direction. The rigid rod (33) passes through the through hole. Two adjacent rigid rods (33) are connected by the elastic rod (34).

6. A multi-stage sieve for soil testing according to claim 5, characterized in that, The length of the rigid rod (33) is greater than the distance between two adjacent fixed blocks (31), and the length of the elastic rod (34) is less than or equal to the distance between two adjacent fixed blocks (31).

7. A multi-stage sieve for soil testing according to claim 1, characterized in that, The screen (1) has guide fins (4) evenly spaced on one side wall and a stirring plate (5) arranged on the other side wall along the side length direction of the first side (11).

8. A multi-stage sieve for soil testing according to claim 7, characterized in that, Both the guide fins (4) and the stirring plate (5) extend in a direction away from the surface of the screen (1).

9. A multi-stage sieve for soil testing according to claim 1, characterized in that, It also includes a storage box (6), which is located directly below the sieve (1) when the soil is sieved using the sieve (1); a partition (7) is provided inside the sieve (1), which divides the space inside the storage box (6) into multiple graded storage spaces.

10. A multi-stage sieve for soil testing according to claim 9, characterized in that, Support rods (8) are hinged to both ends of the storage box (6). A horizontal guide wheel (9) is rotatably installed on the side wall of the support rod (8) facing the inside of the storage box (6) in the horizontal direction. A vertical guide wheel (10) is rotatably installed on the free end face of the support rod (8). When the screen (1) is screening: the edge of the screen (1) overlaps the wheel surface of the horizontal guide wheel (9), and the thickness edge of the screen (1) abuts against the wheel surface of the vertical guide wheel (10).

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