Automatic soil screening device

Abstract

The application discloses an automatic soil screening device, wherein a guide assembly is arranged, the guide assembly comprises an upper box, a lower box and a bottom box; a filtering assembly is arranged in the guide assembly and comprises a top plate, a middle plate and a bottom plate; a transmission assembly is arranged on the side of the guide assembly and comprises a motor, a first column and a first rod; and an adjusting assembly is arranged in the guide assembly and comprises an upper fixed block, a lower movable block, an upper movable block and a lower fixed block. The device has the advantages that the overall device has a small floor area, and the screening and conveying speeds can be automatically adjusted according to the soil input amount of the upstream when the soil is screened.

Description

Technical Field

[0001] This invention relates to the field of soil separation technology, and in particular to an automatic soil screening device. Background Technology

[0002] Currently, when using soil to degrade or eliminate pollution, it is generally necessary to first screen and separate the soil to separate stones, sand, and small-diameter soil particles. The most commonly used method is physical leaching technology. A large proportion of pollutants in the soil are combined with small-particle contaminated soil. In this case, physically separating the large-diameter soil particles from the fine particles can effectively concentrate the pollutants, thereby greatly reducing the volume of contaminated soil. Leaching technology has obvious advantages in treating soil contaminated with heavy metals. However, general separation devices occupy a large area and cannot automatically adjust the screening speed according to the input volume. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above and / or existing automatic soil screening devices, the present invention is proposed.

[0005] Therefore, the problem to be solved by this invention is how to reduce the land occupied during soil screening, while automatically adjusting the screening and transportation speed according to the amount of soil input from upstream.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic soil screening device, which includes a guiding component, a filtering component, a transmission component, and an adjusting component.

[0007] In a preferred embodiment of the automatic soil screening device of the present invention, the guide assembly includes an upper box, a lower box, and a bottom box, wherein the upper box is disposed on top of the lower box, and the lower box is disposed on top of the bottom box;

[0008] A filter assembly, disposed inside the guide assembly, includes a top plate, a middle plate, and a bottom plate. The top plate is disposed on one side of the top of the upper box, the middle plate is disposed between the upper box and the lower box, and the bottom plate is disposed on one side of the bottom of the lower box. The top plate and the bottom plate are located on the same side of the guide assembly, and the middle plate is located on the other side of the guide assembly.

[0009] A transmission assembly, disposed on the side of the guide assembly, includes a motor, a first column, and a first rod, disposed on one side of the lower box; the first column is disposed on top of the motor, and the first rod is disposed on one side of the first column; and...

[0010] An adjustment component, disposed inside the guide component, includes an upper fixed block, a lower movable block, an upper movable block, and a lower fixed block. The upper fixed block is disposed at the top of one side of the upper box, the lower movable block is disposed at the bottom of the other side of the upper box, the upper movable block is disposed at the top of one side of the lower box, and the lower fixed block is disposed at the bottom of the other side of the lower box. The upper fixed block and the lower fixed block are located on the same side of the guide component, and the lower movable block and the upper movable block are located on the other side of the guide component.

[0011] In a preferred embodiment of the automatic soil screening device of the present invention, the upper box, the lower box and the bottom box are vertically connected, the bottom of one side of the upper box is provided with an outlet No. 1, the bottom of the other side of the lower box is provided with an outlet No. 2, and the bottom of the bottom box is provided with an outlet No. 3.

[0012] In a preferred embodiment of the automatic soil screening device of the present invention, the guide assembly further includes a baffle, which is disposed outside the upper box and the lower box. One side of the baffle is directly opposite the first outlet of the upper box, and the other side of the baffle is directly opposite the second outlet of the lower box.

[0013] In a preferred embodiment of the automatic soil screening device of the present invention, the guiding assembly further includes a first roller, a second roller, and a third roller, wherein the first roller is disposed at the bottom of the first outlet, the second roller is disposed at the bottom of the second outlet, and the third roller is disposed at the bottom of the third outlet.

[0014] In a preferred embodiment of the automatic soil screening device of the present invention, the top plate includes a first horizontal plate, a first vertical plate and a first connecting column, the first vertical plate is disposed on both sides of the top of the first horizontal plate and the first connecting column is disposed on both sides of the first vertical plate.

[0015] The middle plate includes a second horizontal plate, a second vertical plate, a second upper connecting column, and a second lower connecting column. The second vertical plate passes through both sides of the second horizontal plate. The second upper connecting column is located on both sides of the top of the second vertical plate, and the second lower connecting column is located on both sides of the bottom of the second vertical plate.

[0016] The base plate includes a third horizontal plate, a third vertical plate, and a third connecting column. The third vertical plate is located on both sides of the bottom of the third horizontal plate, and the third connecting column is located on both sides of the third vertical plate.

[0017] As a preferred embodiment of the automatic soil screening device of the present invention, the filtering assembly further includes a top screen plate and a top filter screen. One end of the top screen plate is rotatably connected to the first connecting column of the top plate, and the other end is rotatably connected to the second upper connecting column at the top of the middle plate. The top filter screen is disposed in the middle of the top screen plate.

[0018] The filtration assembly further includes a bottom sieve plate and a bottom filter screen. One end of the bottom sieve plate is rotatably connected to the second lower connecting column at the bottom of the middle plate, and the other end is rotatably connected to the third connecting column of the bottom plate. The bottom filter screen is disposed in the middle of the bottom sieve plate.

[0019] In a preferred embodiment of the automatic soil screening device of the present invention, the transmission assembly further includes a second column and a second rod, the first rod is rotatably connected to the first column and the second column, one end of the second rod is rotatably connected to the second column, and the other end is rotatably connected to the side of the middle plate.

[0020] As a preferred embodiment of the automatic soil screening device of the present invention, a groove No. 1 is provided on the top side of the upper box, and the bottom of the top plate cooperates with the groove No. 1.

[0021] The bottom of the other side of the upper box is provided with a second slot, and the lower moving block cooperates with the second slot;

[0022] The lower box has a No. 3 slot on one side of its top, and the upper moving block cooperates with the No. 3 slot;

[0023] The lower box has a No. 4 slot on the other side of the top, and the bottom of the middle plate cooperates with the No. 4 slot.

[0024] In a preferred embodiment of the automatic soil screening device of the present invention, the upper fixing block and the first connecting column of the top plate cooperate with each other.

[0025] The lower moving block and the second upper connecting column at the top of the middle plate cooperate;

[0026] The upper moving block and the second lower connecting column at the bottom of the middle plate cooperate;

[0027] The lower fixing block and the third connecting column of the base plate cooperate.

[0028] In a preferred embodiment of the automatic soil screening device of the present invention, the adjusting component further includes a spring and a Hall switch. The top end of the spring is fixed to the bottom of the upper moving block, and the bottom end of the spring is fixed to the bottom of the third groove. One end of the Hall switch is disposed at the bottom of the middle plate, and the other end is disposed at the top of the lower box. The Hall switch is electrically connected to the motor, the first roller, the second roller, and the third roller.

[0029] The beneficial effects of this invention are as follows: through the cooperation of the guiding component, the filtering component, the transmission component and the adjustment component, the overall device occupies a small area, and can automatically adjust the screening and transportation speed according to the amount of soil input from upstream when screening soil. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0031] Figure 1 This is a structural diagram of an automatic soil screening device.

[0032] Figure 2 This is a partial structural diagram of an automatic soil screening device.

[0033] Figure 3 This is a partial structural diagram of an automatic soil screening device from another perspective.

[0034] Figure 4 This is a structural diagram of the filter component of an automatic soil screening device.

[0035] Figure 5 This is a structural diagram of the adjustment component of an automatic soil screening device.

[0036] Figure 6 This is an enlarged view of the adjustment component of an automatic soil screening device.

[0037] Figure 7 Another structural view of the adjustment components of the automatic soil screening device.

[0038] Figure 8 This is an enlarged view of the adjustment components of an automatic soil screening device from another perspective. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0042] Example 1

[0043] Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides an automatic soil screening device, which includes a guiding component 100, a filtering component 200, a transmission component 300, and an adjusting component 400. The overall device occupies a small area and can automatically adjust the screening and transportation speed according to the amount of soil input from upstream when screening soil.

[0044] Specifically, the guide component 100 includes an upper box 101, a lower box 102, and a bottom box 103. The upper box 101 is located on top of the lower box 102, and the lower box 102 is located on top of the bottom box 103.

[0045] The top of the upper box 101 is used to input the soil to be screened, and the bottom of the lower box 103 is used to output fine-grained soil.

[0046] The guide component 100 is used to guide the soil being screened.

[0047] Specifically, the filter assembly 200 is disposed inside the guide assembly 100 and includes a top plate 201, a middle plate 204 and a bottom plate 207. The top plate 201 is disposed on one side of the top of the upper box 101, the middle plate 204 is disposed between the upper box 101 and the lower box 102, and the bottom plate 207 is disposed on one side of the bottom of the lower box 102. The top plate 201 and the bottom plate 207 are located on the same side of the guide assembly 100, and the middle plate 204 is located on the other side of the guide assembly 100.

[0048] The filter assembly 200 is used to separate soil components based on the different diameters of each particle.

[0049] Specifically, the transmission component 300 is located on the side of the guide component 100 and includes a motor 301, a first column 302 and a first rod 303. It is located on one side of the lower box 102, with the first column 302 located on top of the motor 301 and the first rod 303 located on one side of the first column 302.

[0050] The drive assembly 300 provides the power for screening the soil and transporting the separated soil.

[0051] Specifically, the adjustment component 400 is disposed inside the guide component 100 and includes an upper fixed block 401, a lower moving block 402, an upper moving block 403, and a lower fixed block 404. The upper fixed block 401 is disposed on the top of one side of the upper box 101, the lower moving block 402 is disposed on the bottom of the other side of the upper box 101, the upper moving block 403 is disposed on the top of one side of the lower box 102, and the lower fixed block 404 is disposed on the bottom of the other side of the lower box 102. The upper fixed block 401 and the lower fixed block 404 are located on the same side of the guide component 100, and the lower moving block 402 and the upper moving block 403 are located on the other side of the guide component 100.

[0052] The adjustment component 400 allows the device to change the speed at which the soil is screened and the separated soil is transported away, depending on the amount of soil fed into the guide component 100.

[0053] Specifically, the upper box 101, the lower box 102, and the bottom box 103 are connected vertically. The bottom of one side of the upper box 101 is provided with an outlet H1, the bottom of the other side of the lower box 102 is provided with an outlet H2, and the bottom of the bottom box 103 is provided with an outlet H3.

[0054] The top of the upper box 101 receives the original soil slurry, and outlet H1 discharges the largest diameter portion of the soil, such as stones and fallen leaves.

[0055] The soil slurry filtered once is received at the top of the lower box 102, and medium-diameter soil, such as sand, is discharged from outlet H2.

[0056] The soil slurry that has been filtered twice is received at the top of the lower box 102, and small-diameter soil is discharged through outlet H3.

[0057] Outlet 1 H1 is on one side of the separation device, outlet 2 H2 is on the other side of the separation device, and the two are set opposite each other. Outlet 3 H3 is at the bottom of the separation device.

[0058] Specifically, the guide assembly 100 also includes a baffle 104, which is disposed outside the upper box 101 and the lower box 102. One side of the baffle 104 is directly opposite the first outlet H1 of the upper box 101, and the other side of the baffle 104 is directly opposite the second outlet H2 of the lower box 102.

[0059] The baffle 104 is used to cooperate with the first outlet H1 and the second outlet H2 with the side openings to fix the output position.

[0060] Specifically, the guide assembly 100 also includes a first roller 105, a second roller 106, and a third roller 107. The first roller 105 is located at the bottom of the first outlet H1, the second roller 106 is located at the bottom of the second outlet H2, and the third roller 107 is located at the bottom of the third outlet H3.

[0061] Each of the three roller components consists of rollers and a conveyor belt.

[0062] Baffle 104 allows the soil from outlet H1 to fall onto roller 105, and the soil from outlet H2 to fall onto roller 106. Outlet H3 is directly downward and does not require a baffle.

[0063] In use, the transmission assembly 300 transmits power to the guide assembly 100 and the filter assembly 200.

[0064] The top of the upper box 101 receives the original soil slurry, and the first outlet H1 discharges the largest diameter portion of the soil, such as stones and fallen leaves, which are guided by the baffle and fall onto the first roller 105.

[0065] The soil slurry filtered once is received at the top of the lower box 102, and a portion of medium-diameter soil, such as sand, is discharged from the second outlet H2. It is guided by the baffle and falls onto the second roller 106.

[0066] The soil slurry, filtered twice, is received at the top of the lower box 102, and small-diameter soil particles are discharged from outlet H3, falling directly onto roller 107.

[0067] Example 2

[0068] Reference Figures 1-8 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0069] Specifically, the top plate 201 includes a first horizontal plate 201a, a first vertical plate 201b, and a first connecting column 201c. The first vertical plate 201b is located on both sides of the top of the first horizontal plate 201a, and the first connecting column 201c is located on both sides of the first vertical plate 201b.

[0070] The first vertical plate 201b is set at the top of both ends of the first horizontal plate 201a. The top of the first horizontal plate 201a is tilted so that the soil moves towards the middle of the filter assembly 200 when it vibrates.

[0071] Specifically, the middle plate 204 includes a second horizontal plate 204a, a second vertical plate 204b, a second upper connecting column 204c, and a second lower connecting column 204d. The second vertical plate 204b runs through both sides of the second horizontal plate 204a. The second upper connecting column 204c is located on both sides of the top of the second vertical plate 204b, and the second lower connecting column 204d is located on both sides of the bottom of the second vertical plate 204b.

[0072] The second horizontal plate 204a is positioned between the lower moving block 402 and the upper moving block 403. The second vertical plate 204b is positioned at the top and bottom of both ends of the second horizontal plate 204a. The top of the second horizontal plate 204a is also inclined, allowing the soil to move towards the center of the filter assembly 200 when vibrating. The second vertical plate 204b separates the lower moving block 402, the upper moving block 403, and the second horizontal plate 204a, ensuring that when the middle plate 204 moves horizontally and vertically, there is no need to worry about debris entering the grooves of the lower moving block 402 and the upper moving block 403.

[0073] Specifically, the base plate 207 includes a third horizontal plate 207a, a third vertical plate 207b, and a third connecting column 207c. The third vertical plate 207b is located on both sides of the bottom of the third horizontal plate 207a, and the third connecting column 207c is located on both sides of the third vertical plate 207b.

[0074] The third vertical plate 207b is installed at the bottom of both ends of the third horizontal plate 207a, and the top of the third horizontal plate 207a is also tilted, so that the soil moves towards the middle of the filter assembly 200 when it vibrates.

[0075] Specifically, the filter assembly 200 also includes a top screen plate 202 and a top filter screen 203. One end of the top screen plate 202 is rotatably connected to the first connecting post 201c of the top plate 201, and the other end is rotatably connected to the second upper connecting post 204c at the top of the middle plate 204. The top filter screen 203 is located in the middle of the top screen plate 202.

[0076] The top of the top screen plate 202 can move horizontally left and right in conjunction with the top plate 201, and the bottom of the top screen plate 202 can move horizontally left and right and up and down in conjunction with the middle plate 204. The top filter screen 203 has a large aperture and is used to filter stones, fallen leaves, etc.

[0077] Specifically, the filter assembly 200 also includes a bottom sieve plate 205 and a bottom filter screen 206. One end of the bottom sieve plate 205 is rotatably connected to the second lower connecting column 204d at the bottom of the middle plate 204, and the other end is rotatably connected to the third connecting column 207c of the bottom plate 207. The bottom filter screen 206 is located in the middle of the bottom sieve plate 205.

[0078] The bottom sieve plate 205 can move horizontally left and right or up and down in conjunction with the middle plate 204. The bottom sieve plate 202 can move horizontally left and right in conjunction with the bottom plate 207. The bottom filter screen 206 has a small aperture and is used to filter sand, etc.

[0079] Specifically, the transmission assembly 300 also includes a second column 304 and a second rod 305. The first rod 303 is rotatably connected to the first column 302 and the second column 304. One end of the second rod 305 is rotatably connected to the second column 304, and the other end is rotatably connected to the side of the middle plate 204.

[0080] The shape of the first column 302 is a lying "Ji" shape. When the motor 301 drives the first column 302 to rotate, the top and bottom of the first column 302 rotate around the axis of the top and bottom, and the middle part of the first column 302 revolves around the axis of the top and bottom.

[0081] There are two first rods 303, which are respectively arranged at the top and bottom of the protruding part in the middle of the first column 302.

[0082] Both ends of the second column 304 are rotatably connected to the first rod 303, and the second rod 305 is rotatably connected to the middle of the second column 304. This setting allows the second rod 305 to move up and down along the axis of the second column 304, and at the same time, the torque of the first column 302 on the second rod 305 remains unchanged.

[0083] Specifically, a first groove K1 is provided at the top of one side of the upper box 101, and the bottom of the top plate 201 is matched with the first groove K1.

[0084] The top plate 201 can move horizontally in the first groove K1.

[0085] Specifically, a second groove K2 is provided at the bottom of the other side of the upper box 101, and the lower moving block 402 is matched with the second groove K2.

[0086] The lower moving block 402 can move up and down in the second groove K2.

[0087] Specifically, a third groove K3 is provided at the top of one side of the lower box 102, and the upper moving block 403 is matched with the third groove K3.

[0088] The upper moving block 403 can move up and down in the third groove K3.

[0089] Specifically, a fourth groove K4 is provided at the top of the other side of the lower box 102, and the bottom of the middle plate 204 is matched with the fourth groove K4.

[0090] The middle plate 204 can move left and right in the fourth groove K4.

[0091] The second horizontal plate 204a of the middle plate 204 is clamped between the upper moving block 403 and the lower moving block 402. When the upper moving block 403 and the lower moving block 402 move up and down, they will带动 the middle plate 204 to move up and down. At the same time, due to the fourth groove K4, the middle plate 204 can also move horizontally.

[0092] Specifically, the upper fixing block 401 is matched with the first connecting column 201c of the top plate 201.

[0093] A horizontal long groove is provided on the side of the upper fixing block 401, and the first connecting column 201c of the top plate 201 can move horizontally in this groove.

[0094] Specifically, the lower moving block 402 is matched with the second upper connecting column 204c at the top of the middle plate 204.

[0095] The lower moving block 402 has a horizontal long groove on its side, and the second upper connecting column 204c of the middle plate 204 can move horizontally in the groove.

[0096] Specifically, the upper moving block 403 and the second lower connecting post 204d at the bottom of the middle plate 204 cooperate.

[0097] The upper moving block 403 has a horizontal long groove on its side, and the second lower connecting column 204d of the middle plate 204 can move horizontally in the groove.

[0098] Specifically, the lower fixing block 404 and the third connecting post 207c of the base plate 207 are matched.

[0099] The lower fixing block 404 has a horizontal long groove on its side, and the third connecting column 207c of the base plate 207 can move horizontally in the groove.

[0100] Specifically, the adjustment assembly 400 also includes a spring 405 and a Hall switch 406. The top end of the spring 405 is fixed to the bottom of the upper moving block 403, and the bottom end of the spring 405 is fixed to the bottom of the third slot K3. One end of the Hall switch 406 is set at the bottom of the middle plate 204, and the other end is set at the top of the lower box 102. The Hall switch 406 is electrically connected to the motor 301, the first roller 105, the second roller 106, and the third roller 107.

[0101] The Hall switch 406 is set to increase the power of motor 301 and rollers 105, 106, and 107 when it is near.

[0102] When the amount of soil on the top filter screen 203 and bottom filter screen 206 increases, the pressure on the two screens will increase, causing the middle plate 204 to move downward. The middle plate 204 then causes the lower moving block 402 and the upper moving block 403 to move downward in slots K3 and K4 until they are balanced with the elastic force of the spring 405.

[0103] When the amount of soil increases, the two ends of Hall switch 406 will be brought closer together, causing motor 301 and rollers 105, 106, and 107 to increase their power. Column 302 and the three indirectly connected rollers will move faster to increase the speed of soil filtration and the speed of removing the separated soil.

[0104] In use, the transmission assembly 300 transmits power to the guide assembly 100 and the filter assembly 200; the top of the upper box 101 receives the original soil slurry, and the first outlet H1 discharges the largest diameter portion of soil, such as stones and fallen leaves, which is guided by the baffle and falls onto the first roller 105; the top of the lower box 102 receives the soil slurry that has been filtered once, and the second outlet H2 discharges the medium diameter portion of soil, such as sand, which is guided by the baffle and falls onto the second roller 106; the top of the lower box 102 receives the soil slurry that has been filtered twice, and the third outlet H3 discharges small-diameter soil, which falls directly onto the third roller 107.

[0105] As the amount of soil increases, the pressure on the top filter screen 203 and bottom filter screen 206 increases, causing the middle plate 204 to move downwards. The middle plate 204 then moves the lower moving block 402 and the upper moving block 403 downwards in slots K3 and K4 until they are balanced with the spring force of the spring 405. Simultaneously, this causes the two ends of the Hall switch 406 to move closer together, increasing the power of the motor 301 and the three rollers, allowing column 302 and the three rollers to move faster, thus increasing the speed of soil filtration and removal.

[0106] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic soil screening device, characterized in that: include, The guide assembly (100) includes an upper box (101), a lower box (102) and a bottom box (103), wherein the upper box (101) is disposed on top of the lower box (102) and the lower box (102) is disposed on top of the bottom box (103); A filter assembly (200) is disposed inside the guide assembly (100) and includes a top plate (201), a middle plate (204), and a bottom plate (207). The top plate (201) is disposed on one side of the top of the upper box (101), the middle plate (204) is disposed between the upper box (101) and the lower box (102), and the bottom plate (207) is disposed on one side of the bottom of the lower box (102). The top plate (201) and the bottom plate (207) are located on the same side of the guide assembly (100), and the middle plate (204) is located on the other side of the guide assembly (100). A transmission assembly (300), disposed on the side of the guide assembly (100), includes a motor (301), a first column (302), and a first rod (303), disposed on one side of the lower box (102), the first column (302) being disposed on top of the motor (301), and the first rod (303) being disposed on one side of the first column (302); and, An adjustment component (400) is disposed inside the guide component (100) and includes an upper fixed block (401), a lower moving block (402), an upper moving block (403), and a lower fixed block (404). The upper fixed block (401) is disposed on the top of one side of the upper box (101), the lower moving block (402) is disposed on the bottom of the other side of the upper box (101), the upper moving block (403) is disposed on the top of one side of the lower box (102), and the lower fixed block (404) is disposed on the bottom of the other side of the lower box (102). The upper fixed block (401) and the lower fixed block (404) are located on the same side of the guide component (100), and the lower moving block (402) and the upper moving block (403) are located on the other side of the guide component (100). The upper box (101), the lower box (102) and the bottom box (103) are connected vertically. The bottom of one side of the upper box (101) is provided with an outlet (H1), the bottom of the other side of the lower box (102) is provided with an outlet (H2), and the bottom of the bottom box (103) is provided with an outlet (H3). The guide assembly (100) further includes a first roller (105), a second roller (106), and a third roller (107). The first roller (105) is disposed at the bottom of the first outlet (H1), the second roller (106) is disposed at the bottom of the second outlet (H2), and the third roller (107) is disposed at the bottom of the third outlet (H3). The top plate (201) includes a first horizontal plate (201a), a first vertical plate (201b) and a first connecting column (201c). The first vertical plate (201b) is disposed on both sides of the top of the first horizontal plate (201a), and the first connecting column (201c) is disposed on both sides of the first vertical plate (201b). The middle plate (204) includes a second horizontal plate (204a), a second vertical plate (204b), a second upper connecting column (204c), and a second lower connecting column (204d). The second vertical plate (204b) passes through both sides of the second horizontal plate (204a). The second upper connecting column (204c) is located on both sides of the top of the second vertical plate (204b). The second lower connecting column (204d) is located on both sides of the bottom of the second vertical plate (204b). The base plate (207) includes a third horizontal plate (207a), a third vertical plate (207b), and a third connecting column (207c). The third vertical plate (207b) is located on both sides of the bottom of the third horizontal plate (207a), and the third connecting column (207c) is located on both sides of the third vertical plate (207b). The filter assembly (200) further includes a top screen plate (202) and a top filter screen (203). One end of the top screen plate (202) is rotatably connected to the first connecting column (201c) of the top plate (201), and the other end is rotatably connected to the second upper connecting column (204c) at the top of the middle plate (204). The top filter screen (203) is disposed in the middle of the top screen plate (202). The filter assembly (200) further includes a bottom sieve plate (205) and a bottom filter screen (206). One end of the bottom sieve plate (205) is rotatably connected to the second lower connecting column (204d) at the bottom of the middle plate (204), and the other end is rotatably connected to the third connecting column (207c) of the bottom plate (207). The bottom filter screen (206) is disposed in the middle of the bottom sieve plate (205). The top of one side of the upper box (101) is provided with a slot (K1), and the bottom of the top plate (201) is engaged with the slot (K1); The upper box (101) has a second slot (K2) at the bottom of the other side, and the lower moving block (402) cooperates with the second slot (K2); The lower box (102) has a No. 3 slot (K3) on one side of its top, and the upper moving block (403) cooperates with the No. 3 slot (K3); The lower box (102) has a fourth slot (K4) on the other side of its top, and the bottom of the middle plate (204) is fitted with the fourth slot (K4); The adjustment assembly (400) also includes a spring (405) and a Hall switch (406). The top end of the spring (405) is fixed to the bottom of the upper moving block (403), and the bottom end of the spring (405) is fixed to the bottom of the third slot (K3). One end of the Hall switch (406) is located at the bottom of the middle plate (204), and the other end is located at the top of the lower box (102). The Hall switch (406) is electrically connected to the motor (301), the first roller (105), the second roller (106), and the third roller (107).

2. The automatic soil screening device as described in claim 1, characterized in that: The guide assembly (100) further includes a baffle (104) disposed outside the upper box (101) and the lower box (102). One side of the baffle (104) is directly opposite the first outlet (H1) of the upper box (101), and the other side of the baffle (104) is directly opposite the second outlet (H2) of the lower box (102).

3. The automatic soil screening device as described in claim 2, characterized in that: The transmission assembly (300) further includes a second column (304) and a second rod (305). The first rod (303) is rotatably connected to the first column (302) and the second column (304). One end of the second rod (305) is rotatably connected to the second column (304), and the other end is rotatably connected to the side of the middle plate (204).

4. The automatic soil screening device as described in claim 3, characterized in that: The first connecting post (201c) of the upper fixing block (401) and the top plate (201) cooperate; The lower moving block (402) and the second upper connecting column (204c) at the top of the middle plate (204) cooperate; The upper moving block (403) and the second lower connecting column (204d) at the bottom of the middle plate (204) cooperate; The lower fixing block (404) and the third connecting column (207c) of the base plate (207) cooperate.

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