Soil screening equipment for soil remediation capable of avoiding soil accumulation

Abstract

The present invention belongs to the technical field of soil remediation, and relates to a soil screening device for soil remediation capable of avoiding soil accumulation, comprising a sorting box and a roughing mechanism, wherein the roughing mechanism comprises a screen plate, and an opening between a conveyor belt and the screen plate is aligned with a feed port; a rolling mechanism is arranged below the screen plate, and the rolling mechanism comprises a rolling cylinder, and a collecting hopper is arranged below the rolling cylinder; a crushing mechanism comprises a crushing cylinder, and the crushing cylinder is fixed at the bottom of the collecting hopper, a crushing cutter bar is rotatably installed in the crushing cylinder, and a mesh plate and a motor compartment are fixed at the bottom of the crushing cylinder. When the soil to be repaired is poured into the sorting box from the feed port, the soil with smaller particles directly passes through the screen plate, while the stones and soil blocks with larger particles are driven by the friction provided by the conveyor belt to move along the surface of the screen plate, and the conveyor belt is used to press the stones and soil blocks, so that the crushed soil blocks can smoothly pass through the screen plate, and the stones that cannot be crushed continue to move along the surface of the screen plate until they are discharged from the sorting box.

Description

Technical Field

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

[0002] When there are too many harmful substances in the soil, exceeding the soil's self-purification capacity, it will cause changes in the composition, structure and function of the soil. High-salinity environment and high-salinity water irrigation will increase soil salinization. When salinization is serious, soil caking will occur. Nowadays, soil screening in soil remediation often requires multiple people to operate, which is inefficient and wastes a lot of labor.

[0003] The Chinese patent document publication number CN114870939A discloses a soil screening device for soil remediation that can avoid soil accumulation, including a screening device body and a feed hopper provided on the top of the screening device body, a preliminary screening mechanism provided in the screening device body, the preliminary screening mechanism including a crushing roller assembly and a row of beating rollers rotatably installed in the screening device body, the crushing roller assembly is located above the row of beating rollers, the preliminary screening mechanism also includes a fixedly installed outside the screening device body for driving the crushing roller assembly and the row of beating rollers to rotate, and the screening device body is also provided with an anti-accumulation mechanism located below the preliminary screening mechanism. However, this patent still has some shortcomings: it is difficult to separate or process lumps of different hardness in the soil. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that lumps of different hardness in the soil are difficult to handle, the present invention provides a soil screening device for soil remediation that can avoid soil accumulation to solve the above problem.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a soil screening device for soil remediation that can avoid soil accumulation, including a sorting box, the top of the sorting box is provided with a feed inlet, the side and bottom of the sorting box are respectively provided with a side discharge port and a bottom discharge port, the sorting box is also provided with a roughing mechanism, a rolling mechanism and a crushing mechanism, the roughing mechanism includes an inclined screen plate, the lower end of the screen plate is connected to the side discharge port, two conveying shafts are mounted above the screen plate, a conveying belt is installed on the conveying shaft, and the opening between the conveying belt and the screen plate is aligned with the feed inlet; the rolling mechanism and the crushing mechanism are The mechanism is arranged below the screen plate, the rolling mechanism includes two rolling cylinders which are parallel and rotatably installed in the sorting box, a collecting hopper is arranged below the rolling cylinder, the collecting hopper is fixed on the inner wall of the sorting box, and the collecting hopper is used to hold the compacted soil; the crushing mechanism includes a crushing cylinder, the crushing cylinder is fixed at the bottom of the collecting hopper and is connected with the collecting hopper, a crushing knife bar is rotatably installed in the crushing cylinder, a mesh plate and a motor compartment are fixed at the bottom of the crushing cylinder, a crushing motor is fixed in the motor compartment, and the output shaft of the crushing motor passes through the mesh plate and is coaxially fixedly connected with the crushing knife bar.

[0006] The rough selection mechanism also includes a support frame, with sliding rods fixed at both ends of the support frame, and a sliding groove is opened on the side wall of the sorting box. The sliding rod is installed in the sliding groove. A plurality of pressure plates are slidably inserted at the bottom of the support frame, and the top of each pressure plate is abutted against the inner top of the support frame through a spring. A pressure block is fixed at the bottom of the pressure plate, and the pressure block is slidably connected to the inner side of the conveyor belt.

[0007] A cam is fixed to the end of the conveying shaft, and when the cam rotates, it can push the sliding rod and the supporting frame to move downward.

[0008] The rolling mechanism also includes a rolling motor and a pulley group. The rolling motor is fixed on the outer wall of the sorting box. The output shaft of the rolling motor is coaxially fixedly connected to one of the rolling cylinders. The two rolling cylinders are connected through the pulley group.

[0009] The rolling cylinder is a cylindrical structure with a hollow interior. A plurality of filter grooves are provided on the cylinder wall of the rolling cylinder, and crushing strips are fixed on the edges of the filter grooves.

[0010] An air supply pipe is fixed to the side wall of the pulverizing cylinder, one end of the air supply pipe is connected to the interior of the pulverizing cylinder, and the other end of the air supply pipe is connected to a blower, which is fixed to the outer wall of the sorting box.

[0011] Anti-skid convex strips are fixed on the surface of the conveyor belt, and the height of the anti-skid convex strips is less than the minimum distance between the conveyor belt surface and the screen plate.

[0012] The crushing blade bar comprises a central axis and a plurality of blade heads, wherein the plurality of blade heads are fixed on the central axis at equal intervals, and the bottom of the lowest blade head is slidably connected to the surface of the mesh plate.

[0013] The beneficial effects of the present invention are as follows: a roughing mechanism is provided, and when the soil to be repaired is poured into the sorting box from the feed port, the soil with smaller particles directly passes through the sieve plate, while the stones and soil blocks with larger particles are driven by the friction provided by the conveyor belt, move along the surface of the sieve plate, and the surface of the conveyor belt is driven downward by the pressure block to press the stones and soil blocks. When the larger soil blocks are pressed, they will be broken into smaller soil block particles, so that the crushed soil blocks can smoothly pass through the sieve plate. However, due to the high hardness of the stones themselves, when the pressure block presses on the stones, the stones cannot be crushed, and the pressure block cannot continue to press downward, resulting in the compression of the spring. Therefore, the conveyor belt continues to drive the stones to move along the surface of the sieve plate until the stones are discharged from the side discharge port of the sorting box, thereby realizing the sorting of stones and soil blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of a best embodiment of a soil screening device for soil remediation that can avoid soil accumulation according to the present invention;

[0016] Figure 2 It is a schematic diagram of the internal structure of a soil screening device for soil remediation that can avoid soil accumulation according to the present invention;

[0017] Figure 3 It is a structural schematic diagram of a conveyor belt of a soil screening device for soil remediation that can avoid soil accumulation according to the present invention;

[0018] Figure 4 It is a structural schematic diagram of a support frame of a soil screening device for soil remediation that can avoid soil accumulation according to the present invention;

[0019] Figure 5 It is a schematic structural diagram of a rolling drum of a soil screening device for soil remediation that can avoid soil accumulation according to the present invention;

[0020] Figure 6 It is a schematic structural diagram of a crushing cylinder of a soil screening device for soil remediation that can avoid soil accumulation according to the present invention;

[0021] Figure 7The present invention is a schematic structural diagram of a crushing blade of a soil screening device for soil remediation that can avoid soil accumulation.

[0022] Figure numerals: 1. Sorting box; 2. Feed inlet; 3. Side discharge port; 4. Bottom discharge port; 5. Roughing mechanism; 6. Rolling mechanism; 7. Crushing mechanism; 8. Screen plate; 9. Conveyor belt; 10. Rolling cylinder; 11. Collecting hopper; 12. Crushing cylinder; 13. Crushing knife bar; 14. Mesh plate; 15. Motor compartment; 16. Support frame; 17. Slide bar; 18. Slide chute; 19. Pressing plate; 20. Pressing block; 21. Cam; 22. Rolling motor; 23. Pulley assembly; 24. Filter tank; 25. Crushing bar; 26. Air supply pipe; 27. Blower; 28. Knife head. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] like Figures 1 to 7 As shown, the present invention provides an embodiment of a soil screening device for soil remediation that can avoid soil accumulation, including a sorting box 1, a feed port 2 is arranged on the top of the sorting box 1, a side discharge port 3 and a bottom discharge port 4 are respectively arranged on the side and bottom of the sorting box 1, and a roughing mechanism 5, a rolling mechanism 6 and a crushing mechanism 7 are also arranged in the sorting box 1. The roughing mechanism 5 includes an inclined sieve plate 8, and the lower end of the sieve plate 8 is connected to the side discharge port 3. Two conveying shafts are arranged above the sieve plate 8, and a conveyor belt 9 is installed on the conveying shaft. The opening between the conveyor belt 9 and the sieve plate 8 is aligned with the feed port 2.

[0025] When repairing the soil, there are larger stones mixed in the soil. When the soil is poured into the sorting box 1 from the feed port 2, the soil first falls to the higher end of the sieve plate 8. At this time, the larger stones are blocked by the sieve plate 8 and cannot fall down. They are driven by the conveyor belt 9 to move downward along the sieve plate 8 to prevent the sieve plate 8 from being blocked.

[0026] The rough selection mechanism 5 also includes a support frame 16, and slide bars 17 are fixed at both ends of the support frame 16. A slide groove 18 is provided on the side wall of the sorting box 1, and the slide bar 17 is installed in the slide groove 18. A plurality of pressing plates 19 are slidably inserted at the bottom of the support frame 16, and the top of each pressing plate 19 is abutted against the inner top of the support frame 16 through a spring. A pressing block 20 is fixed at the bottom of the pressing plate 19, and the pressing block 20 is slidably connected to the inner side of the conveyor belt 9. A cam 21 is fixed at the end of the conveying shaft, and when the cam 21 rotates, it can push the slide bar 17 and the support frame 16 to move downward.

[0027] The working principle of the roughing mechanism 5 is as follows: after the soil to be repaired is poured into the sorting box 1 from the feed port 2, the soil with smaller particles directly passes through the screen plate 8, while the stones and soil blocks with larger particles are driven by the friction provided by the conveyor belt 9 and move along the surface of the screen plate 8. The conveying shaft of the conveyor belt 9 drives the cam 21 to rotate when it rotates. When the cam 21 rotates to abut against the top of the slide bar 17, the cam 21 continues to rotate to push the slide bar 17 to move downward. The downward movement of the slide bar 17 drives the support frame 16 to move downward. The support frame 16 drives the spring and the pressure plate 19 to move downward. The downward movement of the pressure plate 19 drives the pressure block 20 to move downward, and the pressure block 20 drives the conveyor belt The surface of 9 presses down on the stones and soil blocks. When the larger soil blocks are pressed, they will be broken into smaller soil particles, so that the crushed soil blocks can smoothly pass through the screen plate 8. However, due to the high hardness of the stones themselves, when the pressing block 20 applies pressure to the stones, the stones cannot be crushed, and the pressing block 20 cannot continue to press down, resulting in the compression of the spring. Therefore, the conveyor belt 9 continues to drive the stones to move along the surface of the screen plate 8 until the stones are discharged from the sorting box 1 from the side discharge port 3. When the cam 21 rotates to disengage from the slide bar 17, the elastic force of the conveyor belt 9 pushes the pressing block 20 and then drives the spring, support frame 16 and slide bar 17 to move up and reset, thereby realizing the sorting of stones and soil blocks.

[0028] The rolling mechanism 6 is arranged below the screen plate 8. The rolling mechanism 6 includes two rolling cylinders 10 which are parallel and rotatably installed in the sorting box 1. The rolling mechanism 6 also includes a rolling motor 22 and a pulley group 23. The rolling motor 22 is fixed on the outer wall of the sorting box 1. The output shaft of the rolling motor 22 is coaxially fixedly connected to one of the rolling cylinders 10. The two rolling cylinders 10 are connected through the pulley group 23.

[0029] The rolling cylinder 10 is a cylindrical structure with a hollow interior. A plurality of filter grooves 24 are provided on the cylinder wall of the rolling cylinder 10 , and crushing strips 25 are fixed to the edges of the filter grooves 24 .

[0030] The working principle of the rolling mechanism 6 is as follows: after the soil passes through the screen plate 8, some of the soil still remains in small pieces. When the small pieces of soil enter between the two rolling cylinders 10, they will be crushed by the rolling cylinders 10 to prevent the soil from clumping. The remaining smaller pieces of soil can directly pass through the rolling cylinder 10 from the filter groove 24 on the rolling cylinder 10, avoiding a large amount of soil from accumulating on the surface of the rolling cylinder 10 and affecting the crushing effect of the rolling cylinder 10. At the same time, when the crushing bars 25 arranged on the rolling cylinder 10 come into contact with harder pieces of soil, the contact area between the crushing bars 25 and the pieces of soil is smaller, so that the surface of the pieces of soil can be subjected to greater pressure, thereby crushing the harder pieces of soil.

[0031] A collecting hopper 11 is arranged below the rolling drum 10, and the collecting hopper 11 is fixed on the inner wall of the sorting box 1. The collecting hopper 11 is used to hold the rolled soil. The crushing mechanism 7 includes a crushing drum 12, and the crushing drum 12 is fixed at the bottom of the collecting hopper 11 and is connected to the collecting hopper 11. A crushing knife bar 13 is rotatably installed in the crushing drum 12, and a mesh plate 14 and a motor compartment 15 are fixed at the bottom of the crushing drum 12. A crushing motor is fixed in the motor compartment 15, and the output shaft of the crushing motor passes through the mesh plate 14 and is coaxially fixedly connected with the crushing knife bar 13. After the crushed soil blocks enter the crushing drum 12, the crushing knife bar 13 is driven to rotate by the crushing motor, and the soil blocks are further crushed into powder, thereby realizing soil repair. A heating wire is also fixed to the outer wall of the crushing drum 12, and the soil in the crushing drum 12 is heated and disinfected by the heating wire, and the soil is thoroughly dried at the same time, so that the powdery soil can be stacked and stored to avoid adhesion and caking again during the stacking process due to moisture in the soil.

[0032] An air supply pipe 26 is fixed to the side wall of the pulverizing cylinder 12, one end of the air supply pipe 26 is connected to the interior of the pulverizing cylinder 12, and the other end of the air supply pipe 26 is connected to a blower 27, which is fixed to the outer wall of the sorting box 1. The soil in the pulverizing cylinder 12 is blown through the air supply pipe 26, so that the soil particles are evenly dispersed in the pulverizing cylinder 12, and the soil with qualified particle size can be driven by the air flow to pass through the mesh plate 14, while the soil with unqualified particle size continues to be pulverized in the pulverizing cylinder 12. At the same time, the air supply pipe 26 also increases the air flow rate in the pulverizing cylinder 12, so that the soil can be dried quickly.

[0033] Anti-skid convex strips are fixed on the surface of the conveyor belt 9, and the height of the anti-skid convex strips is less than the minimum distance between the surface of the conveyor belt 9 and the screen plate 8. When soil particles fall on the screen plate 8, the conveyor belt 9 drives the soil particles to move along the surface of the screen plate 8 to perform initial screening of the soil particles. When the soil particles are large and difficult to crush, the anti-skid convex strips on the surface of the conveyor belt 9 will push the larger particles to continue moving along the screen plate 8 until they are discharged from the side discharge port 3 of the sorting box 1.

[0034] The crushing blade bar 13 includes a central axis and multiple blade heads 28. The multiple blade heads 28 are fixed on the central axis at equal intervals. The bottom of the lowest blade head 28 is slidably connected to the surface of the mesh plate 14. When the crushing motor drives the crushing blade bar 13 to rotate and crush the soil, the lowest blade head 28 can clean the surface of the mesh plate 14 to prevent soil particles from accumulating on the mesh plate 14. At the same time, it can also lift up the soil particles at the bottom and crush them again until the soil can pass through the mesh plate 14 smoothly.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A soil screening device for soil remediation capable of avoiding soil accumulation, comprising a sorting box (1), wherein a feed port (2) is arranged at the top of the sorting box (1), and a side discharge port (3) and a bottom discharge port (4) are arranged at the side and bottom of the sorting box (1), respectively, characterized in that: The sorting box (1) is further provided with a roughing mechanism (5), a rolling mechanism (6) and a crushing mechanism (7); the roughing mechanism (5) comprises a sieve plate (8) arranged obliquely, the lower end of the sieve plate (8) being connected to the side discharge port (3); two conveying shafts are mounted above the sieve plate (8), a conveying belt (9) is mounted on the conveying shaft, and an opening between the conveying belt (9) and the sieve plate (8) is aligned with the feed port (2); The rolling mechanism (6) is arranged below the sieve plate (8), and comprises two rolling cylinders (10) which are parallel and rotatably mounted in the sorting box (1), and a collecting hopper (11) is arranged below the rolling cylinders (10), and the collecting hopper (11) is fixed on the inner wall of the sorting box (1), and the collecting hopper (11) is used to receive the soil after rolling; The pulverizing mechanism (7) comprises a pulverizing cylinder (12), the pulverizing cylinder (12) being fixed to the bottom of the collecting hopper (11) and being in communication with the collecting hopper (11), a pulverizing blade (13) being rotatably mounted in the pulverizing cylinder (12), a mesh plate (14) and a motor compartment (15) being fixed to the bottom of the pulverizing cylinder (12), a pulverizing motor being fixed in the motor compartment (15), and an output shaft of the pulverizing motor passing through the mesh plate (14) and being coaxially fixedly connected to the pulverizing blade (13); The rough selection mechanism (5) further comprises a support frame (16), two ends of which are fixed with slide bars (17), a side wall of the sorting box (1) is provided with a slide groove (18), the slide bar (17) is installed in the slide groove (18), a plurality of pressing plates (19) are slidably inserted at the bottom of the support frame (16), the top of each pressing plate (19) is in contact with the inner top of the support frame (16) via a spring, a pressing block (20) is fixed at the bottom of the pressing plate (19), and the pressing block (20) is slidably connected to the inner side of the conveyor belt (9); A cam (21) is fixed to the end of the conveying shaft, and when the cam (21) rotates, it can push the sliding rod (17) and the supporting frame (16) to move downward.

2. The soil screening device for soil remediation capable of avoiding soil accumulation according to claim 1 is characterized in that: The rolling mechanism (6) further comprises a rolling motor (22) and a pulley group (23); the rolling motor (22) is fixed on the outer wall of the sorting box (1); the output shaft of the rolling motor (22) is coaxially fixedly connected to one of the rolling cylinders (10); and the two rolling cylinders (10) are connected in transmission via the pulley group (23).

3. The soil screening device for soil remediation capable of avoiding soil accumulation according to claim 2 is characterized in that: The rolling cylinder (10) is a cylindrical structure with a hollow interior. A plurality of filter grooves (24) are provided on the cylinder wall of the rolling cylinder (10). Crushing strips (25) are fixed to the edges of the filter grooves (24).

4. The soil screening device for soil remediation capable of avoiding soil accumulation according to claim 1 is characterized in that: An air supply pipe (26) is fixed to the side wall of the pulverizing cylinder (12); one end of the air supply pipe (26) is connected to the interior of the pulverizing cylinder (12); the other end of the air supply pipe (26) is connected to a blower (27); and the blower (27) is fixed to the outer wall of the sorting box (1).

5. The soil screening device for soil remediation capable of avoiding soil accumulation according to claim 1, characterized in that: Anti-skid convex strips are fixed to the surface of the conveyor belt (9), and the height of the anti-skid convex strips is less than the minimum distance between the surface of the conveyor belt (9) and the screen plate (8).

6. The soil screening device for soil remediation capable of avoiding soil accumulation according to claim 1, characterized in that: The crushing blade rod (13) comprises a central axis and a plurality of blade heads (28); the plurality of blade heads (28) are fixed on the central axis at equal intervals, and the bottom of the blade head (28) located at the bottom is slidably connected to the surface of the mesh plate (14).

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