Soil screening device for soil remediation

Abstract

The invention provides a soil screening device for soil remediation, and relates to the technical field of soil remediation equipment, and the soil screening device comprises a screening assembly which comprises a box body, a driving shaft, an elastic spiral piece, a plurality of supporting rods, a cleaning brush and a first reciprocating lead screw; the driving assembly is connected with the driving shaft and the first lead screw so as to drive the driving shaft and the first lead screw to rotate. The soil screening device has the beneficial effects that the crushing plate is arranged on the elastic spiral piece of the screening assembly, when the driving shaft rotates to drive the elastic spiral piece to rotate, the axial length of the elastic spiral piece is adjusted, soil entering the box body is fully crushed, the soil is fully raised and scattered, the soil screening effect is enhanced, and the screening net blocking risk is reduced; the screening fluency and efficiency are ensured; and when the driving shaft rotates, the cleaning brush is driven by the first reciprocating lead screw to reciprocate, so that the cleaning brush can tightly move along the surface of the screen, blockages on the screen are effectively cleaned, and the blocking risk of the screen is further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation equipment, and in particular to a soil screening device for soil remediation. Background Art

[0002] In modern agricultural planting practices, the widespread coverage of PE films has brought many benefits to the soil. However, as the use of mulch films continues to rise, a problem that cannot be ignored has gradually emerged: mulch film residue. These large-sized mulch films remaining in the soil are like an invisible barrier, hindering the normal germination and growth of crops, interfering with the smooth transmission of nutrients and water, posing a severe challenge to the extension of crop roots, and ultimately leading to a sharp drop in yields. What's more serious is that mulch film residues in farmland will also aggravate the deterioration of the soil environment, reduce soil moisture content, weaken its drought resistance, cause soil compaction, and further inhibit the growth potential of crops.

[0003] When the soil screening equipment currently used performs the task of removing soil impurities, when the granular soil flows through the screen layer, some impurities are easily retained and clog the screen holes due to factors such as shape, size or viscosity. This clogging phenomenon reduces work efficiency. Summary of the invention

[0004] In view of this, in order to solve the problem that impurities in soil screening equipment are easily retained and clog the sieve holes, an embodiment of the present invention provides a soil screening device for soil remediation.

[0005] An embodiment of the present invention provides a soil screening device for soil remediation, comprising: The screening assembly comprises a box body, a driving shaft, an elastic spiral sheet, a plurality of support rods, a cleaning brush and a first reciprocating screw, wherein the box body is provided with a feed port at the upper end and a screen at the lower end, the driving shaft is rotatably arranged in the box body, the elastic spiral sheet is spirally arranged around the driving shaft, a plurality of spaced crushing plates are arranged on the elastic spiral sheet along its length direction, each of the support rods is spaced along the axial direction of the driving shaft, one end of each of the support rods is fixedly connected to the elastic spiral sheet, and the other end is slidably connected to the driving shaft, and the upper end of the cleaning brush is slidably connected to the driving The first reciprocating screw comprises a first screw and a first screw nut, the first screw can rotatably pass through the driving shaft, the first screw nut is sleeved on the first screw, and the first screw nut passes through the driving shaft and is connected to a fixed sleeve, the fixed sleeve is axially slidably connected to the driving shaft, and the fixed sleeve is connected to the cleaning brush to drive the cleaning brush to move axially along the driving shaft and drive the elastic spiral sheet to move axially along the driving shaft; And a driving assembly, which is respectively connected to the driving shaft and the first screw rod to drive the driving shaft and the first screw rod to rotate.

[0006] Furthermore, the support rod is radially arranged along the driving shaft, and a support sleeve is provided at one end of the support rod. The support sleeve is sleeved on the driving shaft and can only slide axially along the driving shaft.

[0007] Furthermore, the surface of the driving shaft is provided with a limiting groove arranged along the axial direction, and the inner wall of the supporting sleeve is provided with a limiting protrusion embedded in the limiting groove, and the limiting protrusion is embedded in the limiting groove and can slide along the limiting groove.

[0008] Furthermore, a limit block is provided on the outer wall of the first screw nut, the fixed sleeve is slidably mounted on the outer wall of the drive shaft, the limit block passes through the limit groove and can slide along the limit groove, and the limit block is connected to the fixed sleeve.

[0009] Furthermore, a rotatable connecting sleeve is provided at one end of the fixing sleeve close to the elastic spiral sheet, and the connecting sleeve is connected to a supporting sleeve of the supporting rod located at the outermost edge.

[0010] Furthermore, the cleaning brush comprises a brush plate and a movable plate, the movable plate is fan-shaped, the upper end of the movable plate is connected to the fixed sleeve, and the lower end of the movable plate is connected to the brush plate, and the brush plate is in contact with the screen.

[0011] Furthermore, it also includes a blanking component, which includes a support plate, a slide plate, a plurality of vibration plates and a second reciprocating screw. The support plate is arc-shaped and fixedly arranged below the screen, the slide plate is arc-shaped and contacts the inner wall of the support plate, the second reciprocating screw includes a second screw rod and a second screw nut, the second screw rod is axially arranged along the slide plate, the second screw nut is sleeved on the second screw rod and connected to the slide plate, an arc-shaped mounting seat is provided at the upper end of the slide plate, and each of the vibration plates is spaced apart along the arc length direction of the mounting seat, and impact blocks are provided at both ends of each of the vibration plates, and the impact blocks contact the bottom surface of the screen.

[0012] Furthermore, the vibration plate passes through the slide plate, and parts of the vibration plate located on both sides of the slide plate are provided with elastic grooves.

[0013] Furthermore, it also includes a crushing assembly, which includes a feed hopper and two crushing rollers. The feed hopper is arranged at the feed port, and the two crushing rollers are arranged in parallel in the feed hopper.

[0014] Furthermore, the driving assembly includes a motor, and a first gear group, a second gear group, a first synchronous belt assembly and a second synchronous belt assembly respectively connected to the motor, the first gear group is connected to one end of the driving shaft, the second gear group is connected to the first screw rod, the first synchronous belt assembly is connected to the two crushing rollers, and the second synchronous belt assembly is connected to the second screw rod.

[0015] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention are: 1. A soil screening device for soil remediation of the present invention, wherein a crushing plate is arranged on an elastic spiral sheet in a screening component, and when the driving shaft rotates, the elastic spiral sheet is driven to rotate while the axial length of the elastic spiral sheet is adjusted, so that the soil entering the box body is fully crushed, the soil is fully lifted and scattered, the screening effect of the soil is enhanced, the risk of screen clogging is reduced, and the smoothness and efficiency of screening are ensured; and when the driving shaft rotates, the cleaning brush is driven to reciprocate through the first reciprocating screw, so that the cleaning brush can move closely along the surface of the screen, effectively cleaning the blockage on the screen, and further reducing the risk of screen clogging.

[0016] 2. A soil screening device for soil remediation of the present invention has a feeding assembly that can drive the vibration plate to reciprocate through the second reciprocating screw after the crushed soil falls onto the screen, thereby driving the vibration plate impact block to collide with the bottom of the screen, causing the screen to vibrate to promote the separation of the soil on the screen, especially for fine particles and tightly attached soil, effectively improving the thoroughness and efficiency of screening.

[0017] 3. In the soil screening device for soil remediation of the present invention, the crushing component can effectively crush the input soil through the crushing roller, thereby improving the fineness of the soil and providing a good foundation for subsequent screening work. The crushed soil directly enters the interior of the box for further screening operations, and the whole process is continuous and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a soil screening device for soil remediation of the present invention; Figure 2 is a schematic diagram of the screening assembly; Figure 3 It is a cross-sectional view of the box; Figure 4 is a cross-sectional view of the screening assembly; Figure 5 It is a schematic diagram of the connection between the drive shaft and the support sleeve; Figure 6 is a schematic diagram of the connection between the drive shaft and the first screw rod; Figure 7 is a connection diagram of a first lead screw and a first lead screw nut; Figure 8 is a schematic diagram of a cleaning brush; Fig. 9 is a schematic diagram of the broken components; Fig.10 It is a diagram of the internal structure of the broken component; Fig.11 It is a schematic diagram of the blanking assembly; Fig.12 It is a cross-sectional view of the blanking assembly; Fig.13 It is a schematic diagram of a skateboard; Fig.14 is a schematic diagram of the drive assembly.

[0019] In the figure: 1. Screening assembly; 101. Box; 102. Support foot; 103. Feeding port; 104. Discharging port; 105. Elastic spiral sheet; 106. Crushing plate; 107. Driving shaft; 108. Support sleeve; 109. Support rod; 110. Screen; 111. First screw rod; 112. Limiting groove; 113. Fixed sleeve; 114. First screw nut; 115. Limiting block; 116. Movable plate; 117. Brush plate; 118. Connecting sleeve; 119. Connecting ring; 120. Bin door; 2. Crushing assembly; 201. Feeding hopper; 202. Guide plate; 203. Connecting shaft; 204. Crushing roller; 3. Driving assembly; 301. Motor; 302. 02, output shaft; 303, first driving gear; 304, second driving gear; 305, first driven gear; 306, second driven gear; 307, first driving pulley; 308, first belt; 309, first driven pulley; 310, third gear; 311, support plate; 312, fixing plate; 313, frame; 314, second driving pulley; 315, second belt; 316, second driven pulley; 4, blanking assembly; 401, support plate; 402, shaft bracket; 403, second screw; 404, elastic groove; 405, impact block; 406, second screw nut; 407, slide plate; 408, mounting seat; 409, vibration plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in conjunction with the accompanying drawings. The following is a preferred embodiment of the present invention, which is intended to provide a basic understanding of the present invention, but is not intended to confirm the key or decisive elements of the present invention or to limit the scope of protection.

[0021] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0022] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0024] It should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Please refer to Figure 1 An embodiment of the present invention provides a soil screening device for soil remediation, including a screening component 1 and a driving component 3.

[0026] Combination Figure 2-Figure 8 As shown, the screening assembly 1 includes a housing 101, a drive shaft 107, an elastic spiral sheet 105, a plurality of support rods 109, a cleaning brush and a first reciprocating screw.

[0027] The box body 101 is provided with a feed inlet 103 at the upper end and a screen 110 at the lower end. Figure 2 As shown, the box 101 is approximately cylindrical, and the feed port 103 is arranged at the top of the box 101 and is approximately rectangular in shape. A feed port 104 is arranged at the bottom of the box 101, and the screen 110 is arc-shaped and arranged on the feed port 104, and is arranged opposite to the feed port 103 up and down.

[0028] In some embodiments, the bottom of the box 101 is provided with a plurality of support legs 102, each of which supports the box 101 to a predetermined height to facilitate soil screening operations. In addition, an openable door 120 is provided on one side of the box 101 to clean impurities inside the box 101.

[0029] The driving shaft 107 is disposed in the middle and rotatably disposed in the box body 101 . The driving shaft 107 is disposed along the axis of the box body 101 . Both ends of the driving shaft 107 penetrate the box body 101 and are rotatably connected to the box body 101 .

[0030] The elastic spiral piece 105 is generally a spiral steel piece, and the elastic spiral piece 105 is spirally arranged around the driving shaft 107, and the elastic spiral piece 105 is arranged around the inner wall of the box body 101. The elastic spiral piece 105 is provided with a plurality of spaced crushing plates 106 along its length direction, and the crushing plates 106 are in the shape of long strips, cross-connected with the elastic spiral piece 105, and the crushing plates 106 are arranged obliquely.

[0031] Each of the support rods 109 is arranged at intervals along the axial direction of the drive shaft 107, and preferably, each of the support rods 109 is arranged at equal intervals along the axial direction of the drive shaft 107. One end of each of the support rods 109 is fixedly connected to the elastic spiral sheet 105, and the other end is slidably connected to the drive shaft 107. Here, the support rods 109 are arranged radially along the drive shaft 107, and one end of the support rods 109 is provided with a support sleeve 108, and the support sleeve 108 is sleeved on the drive shaft 107 and can only slide along the axial direction of the drive shaft 107. Preferably, the surface of the drive shaft 107 is provided with a limiting groove 112 arranged along the axial direction, and the inner wall of the support sleeve 108 is provided with a limiting protrusion embedded in the limiting groove 112, and the limiting protrusion is embedded in the limiting groove 112 and can slide along the limiting groove 112, so that the support sleeve 108 can only slide along the axial direction of the drive shaft 107 and cannot rotate.

[0032] The upper end of the cleaning brush is slidably connected to the drive shaft 107 and fixedly connected to a support rod 109 at the edge, and the lower end of the cleaning brush is in contact with the screen 110. The axial movement of the cleaning brush along the drive shaft 107 can drive the support rod 109 to move axially along the drive shaft 107.

[0033] The first reciprocating screw includes a first screw rod 111 and a first screw nut 114. The first screw rod 111 can rotatably pass through the drive shaft 107. The first screw nut 114 is sleeved on the first screw rod 111, and the first screw nut 114 passes through the drive shaft 107 and is connected to a fixed sleeve 113. The fixed sleeve 113 is axially slidably connected to the drive shaft 107. The fixed sleeve 113 is connected to the cleaning brush to drive the cleaning brush to move axially along the drive shaft 107 and drive the elastic spiral sheet 105 to move axially along the drive shaft 107.

[0034] More specifically, a stopper 115 is provided on the outer wall of the first lead screw nut 114, the fixing sleeve 113 is slidably sleeved on the outer wall of the driving shaft 107, the stopper 115 passes through the stopper groove 112 and can slide along the stopper groove 112, and the stopper 115 is connected to the fixing sleeve 113. A rotatable connecting sleeve 118 is provided at one end of the fixing sleeve 113 close to the elastic spiral sheet 105, and the connecting sleeve 118 is connected to the supporting sleeve 108 of the supporting rod 109 located at the edge. Here, the fixing sleeve 113 and the connecting sleeve 118 are connected by a connecting ring 119, the connecting ring 119 is sleeved on the fixing sleeve 113, and the connecting sleeve 118 is plugged into the connecting ring 119.

[0035] The driving assembly 3 is connected to the driving shaft 107 and the first screw rod 111 respectively to drive the driving shaft 107 and the first screw rod 111 to rotate. The rotation of the driving shaft 107 can drive the elastic spiral piece 105 to rotate, and the rotation of the first screw rod 111 drives the first screw nut 114 to reciprocate, thereby driving the fixing sleeve 113 to reciprocate, and the fixing sleeve 113 drives the cleaning brush to reciprocate along the axial direction of the driving shaft 107, so that the bottom of the cleaning brush contacts the screen 110 and moves along the surface of the screen 110 to clean the blockage on the screen 110. And when the first screw nut 114 reciprocates, the axial length of the elastic spiral piece 105 changes, which can form a strong stirring and turning effect in the box 101, fully crush the soil entering the box 101, and promote the separation between soil particles, thereby improving the screening efficiency.

[0036] The cleaning brush can be flexibly selected according to the actual application scenario, and only needs to clean the surface of the screen 110. As described in this embodiment, the cleaning brush includes a brush plate 117 and a movable plate 116, and the movable plate 116 is fan-shaped. The upper end of the movable plate 116 is connected to the fixed sleeve 113, and the lower end is connected to the brush plate 117, and the brush plate 117 is in contact with the screen 110.

[0037] like Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, the embodiments of the present invention provide a soil screening device for soil remediation, further comprising a material lowering assembly 4, which is disposed below the screen 110. The material lowering assembly 4 comprises a support plate 401, a slide plate 407, a plurality of vibration plates 409, and a second reciprocating screw, the support plate 401 is arc-shaped and fixedly disposed below the screen 110, the slide plate 407 is arc-shaped and contacts the inner wall of the support plate 401, and the bottom of the slide plate 407 can slide along the inner wall of the support plate 401.

[0038] The second reciprocating screw comprises a second screw rod 403 and a second screw nut 406. The second screw rod 403 is axially arranged along the slide plate 407. Here, shaft brackets 402 are provided at both ends of the support plate 401. The second screw rod 403 is rotatably mounted on the two shaft brackets 402. The second screw nut 406 is sleeved on the second screw rod 403 and connected to the slide plate 407. The second screw nut 406 penetrates the slide plate 407, and the second screw rod 403 passes through the second screw nut 406. An arc-shaped mounting seat 408 is provided at the upper end of the slide plate 407. Each of the vibration plates 409 is arranged at intervals along the arc length direction of the mounting seat 408. Both ends of each of the vibration plates 409 are provided with impact blocks 405, and the impact blocks 405 are in contact with the bottom surface of the screen 110.

[0039] The driving assembly 3 is connected to the second screw rod 403 to drive the second screw rod 403 to rotate. The second screw rod 403 drives the second screw nut 406 to drive the slide plate 407 to reciprocate along the length direction of the support plate 401, so that the vibration plate 409 reciprocates along the length direction of the support plate 401, and the impact block 405 reciprocates along the bottom surface of the screen 110, so that the screen 110 vibrates, thereby causing the soil blocked in the screen 110 to fall off.

[0040] In some preferred embodiments, the vibration plate 409 passes through the slide plate 407, and each of the vibration plates 409 is arranged at equal intervals along the arc length direction of the mounting seat 408, and the impact blocks 405 at both ends of each of the vibration plates 409 are in contact with the lower surface of the screen 110. In addition, the vibration plate 409 is generally a steel plate, and the portions of the vibration plate 409 located on both sides of the slide plate 407 are provided with elastic grooves 404, and the elastic grooves 404 make the impact blocks 405 vibrate more significantly after colliding with the screen 110, thereby making the screen 110 vibrate more strongly, which is convenient for the soil blocked in the screen 110 to fall off.

[0041] like Fig. 9 and Fig.10As shown, in some embodiments, the embodiments of the present invention provide a soil screening device for soil remediation, further comprising a crushing assembly 2, which is arranged above the feed port 103. The crushing assembly 2 mainly comprises a feed hopper 201 and two crushing rollers 204, the feed hopper 201 is arranged at the feed port 103, the feed hopper 201 is fixedly installed on the upper part of the box body 101, and two inclined guide plates 202 are also arranged in the feed hopper 201, the horizontal distance between the two guide plates 202 gradually decreases from top to bottom, and the lower ends of the two guide plates 202 are aligned with the upper end of the feed port 103. The two crushing rollers 204 are arranged in parallel in the feed hopper 201, and the two ends of each crushing roller 204 respectively pass through the two ends of the feed hopper 201 and the two ends of the feed hopper 201 are rotatably connected.

[0042] The driving assembly 3 is connected to the two crushing rollers 204 to drive the crushing rollers 204 to rotate. After the soil to be repaired is put into the feed hopper 201, the soil enters between the two crushing rollers 204 along the guide plate 202, and the soil is crushed by the two crushing rollers 204. The crushed soil enters the box body 101 through the feed port 103.

[0043] like Figure 1 and Fig.14 As shown, the driving assembly 3 can simultaneously drive the screening assembly 1, the feeding assembly 4 and the crushing assembly 2 to work. The driving assembly 3 includes a motor 301, and a first gear set, a second gear set, a first synchronous belt assembly and a second synchronous belt assembly respectively connected to the motor 301, the first gear set is connected to one end of the driving shaft 107, the second gear set is connected to the first screw rod 111, the first synchronous belt assembly is connected to the two crushing rollers 204, and the second synchronous belt assembly is connected to the second screw rod 403.

[0044] Specifically, the driving assembly 3 is disposed on one side of the box body 101, and the driving assembly 3 further includes a frame 313, which is U-shaped and fixedly mounted on one end of the box body 101 and located outside one end of the box body 101. A support plate 311 extending upward is provided on the top of the frame 313, and the support plate 311 extends to the outside of one end of the feed hopper 201.

[0045] The first gear set includes a first driving gear 303 and a first driven gear 305 that are meshed with each other, the second gear set includes a second driving gear 304 and a second driven gear 306 that are meshed with each other, the motor 301 is fixedly mounted on the frame 313, the motor 301 is connected to the output shaft 302, a vertically arranged fixing plate 312 is provided in the frame 313, and the output shaft 302 rotatably passes through the fixing plate 312. The first driving gear 303 and the second driving gear 304 are respectively sleeved on the output shaft 302, the first driven gear 305 is sleeved on one end of the driving shaft 107, and the second driven gear 306 is sleeved on one end of the first screw rod 111.

[0046] The first synchronous belt assembly includes a first belt 308, a first driving pulley 307 and a first driven pulley 309. The first driving pulley 307 is sleeved and installed on the output shaft 302. A connecting shaft 203 is provided at the end of each crushing roller 204. A third gear 310 is sleeved and installed on each connecting shaft 203. The two third gears 310 are meshed. The first driven pulley 309 is sleeved and installed on the connecting shaft 203. The first belt 308 passes through the upper part of the frame 313 and is sleeved on the first driving pulley 307 and the first driven pulley 309.

[0047] The second synchronous belt assembly includes a second belt 315, a second driving pulley 314 and a second driven pulley 316. The second driving pulley 314 is sleeved and installed on the output shaft 302. The two driven pulleys are sleeved and installed on one end of the second screw rod 403. The second belt 315 passes through the lower part of the frame 313 and is sleeved on the second driving pulley 314 and the second driven pulley 316.

[0048] The process of soil screening by a soil screening device for soil remediation of the present invention is as follows: The motor 301 drives the output shaft 302 to rotate, and the output shaft 302 drives the first driving pulley 307 to rotate. Under the transmission action of the first belt 308, the first driven pulley 309 drives the connecting shaft 203, and the two third gears 310 are engaged and driven to rotate the two crushing rollers 204. The soil to be screened is put into the feed hopper 201, and the soil enters between the two crushing rollers 204 along the guide plate 202, and the soil is crushed by the two crushing rollers 204. The crushed soil enters the interior of the box 101 through the feed port 103.

[0049] At the same time, the output shaft 302 drives the first driving gear 303 and the second driving gear 304 to rotate, and the first driving gear 303 is meshed with the first driven gear 305 for transmission, so that the first driven gear 305 drives the driving shaft 107 to rotate. When the driving shaft 107 rotates, it can drive each of the supporting sleeves 108 to rotate, and the supporting rod 109 is driven to rotate through the supporting sleeve 108, and the elastic spiral piece 105 is driven to rotate through the supporting rod 109, and each of the crushing plates 106 is driven to rotate through the elastic spiral piece 105, and the soil inside the box 101 can be lifted by the crushing plate 106, so that the soil can be fully dispersed inside the box 101, and the elastic spiral piece 105 can break the soil when it rotates and spread it through the screen 110, and the crushing plate 106 can push away the soil accumulated on the screen 110 when it rotates, so as to avoid excessive accumulation of soil on the screen 110, resulting in poor filtering of the screen 110.

[0050] The second driving gear 304 is meshed with the second driven gear 306 for transmission, so that the second driven gear 306 drives the first screw rod 111 to rotate, the rotation speed of the first screw rod 111 is greater than the driving shaft 107, the first screw nut 114 reciprocates axially along the box body 101, the first screw nut 114 drives the limit block 115 to slide along the inner wall of the limit groove 112, and drives the fixed sleeve 113 to move through the limit block 115, drives the movable plate 116 to reciprocate through the fixed sleeve 113, and drives the cleaning brush to move through the movable plate 116. When the fixed sleeve 113 moves, it drives the connecting ring 119 to move, and the connecting sleeve 118 is driven to move through the connecting ring 119, and the supporting sleeve 108 is driven to rotate through the connecting sleeve 118. The supporting sleeve 108 drives one end of the elastic spiral piece 105 to move through the support rod 109. At this time, the elastic spiral piece 105 is compressed and shortened, thereby ensuring the reciprocating movement of the cleaning brush. When the cleaning brush moves in the opposite direction, the elastic force of the elastic spiral piece 105 is restored, so that the elastic spiral piece 105 can be extended and retracted. When the elastic spiral piece 105 is compressed, it can also rotate driven by the driving shaft 107. When the cleaning brush moves, it can clean the soil blocked in the screen 110.

[0051] In addition, the soil passing through the screen 110 falls into the support plate 401, and the output shaft 302 drives the second active pulley 314 to rotate when it rotates. The second active pulley 314 drives the second driven pulley 316 to rotate through the second belt 315, and the second driven pulley 316 drives the second screw rod 403 to rotate, so that the second screw nut 406 reciprocates along the length direction of the support plate 401, and at the same time drives the slide plate 407 to move, and the slide plate 407 is used to push the soil inside the support plate 401 out from both ends of the support plate 401, and the vibration plate 409 on the upper part of the slide plate 407 reciprocates, and the impact block 405 on the vibration plate 409 collides with the lower surface of the screen 110, so that the screen 110 vibrates, which facilitates the soil blocked in the screen 110 to fall off.

[0052] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the parts in the drawings and the positions of the parts relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can change accordingly according to different ways of use and placement, and the use of the directional words should not limit the scope of protection claimed in this application.

[0053] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soil screening device for soil remediation, characterized in that: include: The screening assembly comprises a box body, a driving shaft, an elastic spiral sheet, a plurality of support rods, a cleaning brush and a first reciprocating screw, wherein the box body is provided with a feed port at the upper end and a screen at the lower end, the driving shaft is rotatably arranged in the box body, the elastic spiral sheet is spirally arranged around the driving shaft, a plurality of spaced crushing plates are arranged on the elastic spiral sheet along its length direction, each of the support rods is spaced along the axial direction of the driving shaft, one end of each of the support rods is fixedly connected to the elastic spiral sheet, and the other end is slidably connected to the driving shaft, and the upper end of the cleaning brush is slidably connected to the driving The first reciprocating screw comprises a first screw and a first screw nut, the first screw can rotatably pass through the driving shaft, the first screw nut is sleeved on the first screw, and the first screw nut passes through the driving shaft and is connected to a fixed sleeve, the fixed sleeve is axially slidably connected to the driving shaft, and the fixed sleeve is connected to the cleaning brush to drive the cleaning brush to move axially along the driving shaft and drive the elastic spiral sheet to move axially along the driving shaft; And a driving assembly, which is respectively connected to the driving shaft and the first screw rod to drive the driving shaft and the first screw rod to rotate.

2. A soil screening device for soil remediation according to claim 1, characterized in that: The support rod is radially arranged along the driving shaft, and a support sleeve is arranged at one end of the support rod. The support sleeve is sleeved on the driving shaft and can only slide axially along the driving shaft.

3. A soil screening device for soil remediation according to claim 2, characterized in that: The surface of the driving shaft is provided with a limiting groove arranged along the axial direction, and the inner wall of the supporting sleeve is provided with a limiting protrusion embedded in the limiting groove. The limiting protrusion is embedded in the limiting groove and can slide along the limiting groove.

4. A soil screening device for soil remediation as claimed in claim 3, characterized in that: A limiting block is provided on the outer wall of the first lead screw nut, the fixing sleeve is slidably mounted on the outer wall of the driving shaft, the limiting block passes through the limiting groove and can slide along the limiting groove, and the limiting block is connected to the fixing sleeve.

5. The soil screening device for soil remediation according to claim 1, characterized in that: A rotatable connecting sleeve is provided at one end of the fixing sleeve close to the elastic spiral sheet, and the connecting sleeve is connected to a supporting sleeve of the supporting rod located at the outermost edge.

6. A soil screening device for soil remediation according to any one of claims 1 to 5, characterized in that: The cleaning brush comprises a brush plate and a movable plate, the movable plate is fan-shaped, the upper end of the movable plate is connected to the fixed sleeve, and the lower end of the movable plate is connected to the brush plate, and the brush plate is in contact with the screen.

7. The soil screening device for soil remediation according to claim 1, characterized in that: The device further comprises a material discharging assembly, which comprises a support plate, a slide plate, a plurality of vibration plates and a second reciprocating screw. The support plate is arc-shaped and fixedly arranged below the screen. The slide plate is arc-shaped and contacts the inner wall of the support plate. The second reciprocating screw comprises a second screw rod and a second screw nut. The second screw rod is axially arranged along the slide plate. The second screw nut is sleeved on the second screw rod and connected to the slide plate. An arc-shaped mounting seat is arranged at the upper end of the slide plate. The vibration plates are spaced apart along the arc length direction of the mounting seat. Impact blocks are arranged at both ends of each vibration plate, and the impact blocks contact the bottom surface of the screen.

8. A soil screening device for soil remediation according to claim 7, characterized in that: The vibration plate passes through the slide plate, and elastic grooves are provided on the parts of the vibration plate located on both sides of the slide plate.

9. A soil screening device for soil remediation according to claim 7, characterized in that: It also includes a crushing assembly, which includes a feed hopper and two crushing rollers. The feed hopper is arranged at the feed port, and the two crushing rollers are arranged in parallel in the feed hopper.

10. A soil screening device for soil remediation according to claim 9, characterized in that: The driving assembly includes a motor, and a first gear set, a second gear set, a first synchronous belt assembly and a second synchronous belt assembly respectively connected to the motor, the first gear set is connected to one end of the driving shaft, the second gear set is connected to the first screw rod, the first synchronous belt assembly is connected to the two crushing rollers, and the second synchronous belt assembly is connected to the second screw rod.

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