A soil multi-layer screening device

Abstract

The present invention discloses a soil multi-layer screening device, which relates to the field of soil technology, including a vibrating screen with a rectangular frame mechanism, a screen for screening materials in the form of mesh materials fixedly connected to the interior of the upper end of the vibrating screen, a screen box for carrying the screen and supporting the entire screening process fixedly connected to the interior of the vibrating screen close to the screen, a vibration motor for driving the screen box and the screen to vibrate is fixedly connected to the outer wall of one side of the vibrating screen close to the screen box, a discharge port for outputting the screened material is fixedly connected to the outer wall of the side of the vibrating screen close to the screen box, a gathering guide mechanism is provided above the screen, oblique drainage mechanisms are provided on both sides of the inner wall of the screen box, and annular adsorption mechanisms are provided on both sides of the screen. By utilizing the cooperation of a gathering piece and a connecting rod, the gathering guide mechanism can concentrate the soil sample more on the screen, thereby reducing the dispersion and splashing of the soil during the screening process.

Description

Technical Field

[0001] The present invention relates to the field of soil technology, in particular to a soil multi-layer screening device. Background Art

[0002] As an advanced soil processing and analysis tool, the soil multi-layer screening device, its research and development and application background deeply reflects the growing demand and attention of modern technology in fields such as agriculture, environmental science, soil science and geology.

[0003] With the continuous development of global agricultural production and growing awareness of environmental protection, the monitoring, assessment, and improvement of soil quality have become increasingly important. As the foundation of agricultural production, soil's physical properties, chemical composition, and microbial community structure directly influence crop growth and yield. Furthermore, with accelerating urbanization and increasing industrial activity, soil pollution is becoming an increasingly prominent issue, and the treatment and remediation of contaminated soil has become a key focus of environmental science research.

[0004] Against this backdrop, traditional soil screening methods are struggling to meet the demands for high-precision and high-efficiency screening. Conventional screening tools are often limited to screening a single particle size and are easily affected by factors such as soil moisture and adhesion, resulting in suboptimal screening results. Therefore, developing a multi-layer soil screening device that can achieve multi-layer screening and improve screening accuracy and efficiency is crucial.

[0005] The multi-layer soil screening device integrates multiple screens, vibrators, motors, and other components to achieve efficient and accurate screening of soil samples. The device can separate particles of varying sizes layer by layer according to the user-defined screening aperture, thereby meeting the needs of various fields for soil particle size distribution and composition analysis. Furthermore, the device is easy to maintain and operate, significantly improving the efficiency and accuracy of soil screening.

[0006] There are still the following defects in specific use:

[0007] 1. Reduced screening efficiency: When large particles become clogged in small mesh openings, the permeability of these openings decreases, preventing the screen from effectively separating and screening the material. This results in reduced screening efficiency and an uneven particle size distribution of the screened material. Screen blockage: The accumulation of large particles can cause localized blockage of the screen. This prevents smooth movement of material across the screen, potentially reducing or uneven material flow and impacting overall production capacity. Equipment wear and damage: When large particles accumulate in the mesh openings, the vibrating screen's moving parts may be subjected to excessive pressure and friction, accelerating equipment wear. This not only increases maintenance costs but can also shorten the equipment's lifespan.

[0008] 2. Material loss: Splashing soil can cause some material to be lost, affecting overall screening efficiency and throughput. Especially in large-scale production, this loss can accumulate to a significant amount. Reduced screening efficiency: Splashing soil can cause the screen to become dirty or clogged, affecting screening efficiency and accuracy. Soil splashing can also obscure the screen, reducing screening accuracy. Environmental pollution: Splashing soil can pollute the on-site environment, especially in confined or semi-confined working environments. Splashing soil can make the surrounding ground dirty and messy, and can also affect the health and comfort of workers.

[0009] In view of this, the present invention proposes a soil multi-layer screening device to remedy and improve the shortcomings of the prior art. Summary of the Invention

[0010] In order to solve the above technical problems, the present invention provides a soil multi-layer screening device to solve the technical problems raised in the above background technology.

[0011] To achieve the above purpose, the technical solution adopted by the present invention is: a soil multi-layer screening device, comprising a vibrating screen of a rectangular frame mechanism, a screen for screening materials in the form of mesh materials fixedly connected to the upper end of the vibrating screen, a screen box for carrying the screen and supporting the entire screening process fixedly connected to the inner side of the vibrating screen close to the screen, a vibration motor for driving the screen box and the screen to vibrate, a discharge port for outputting the screened material fixedly connected to the outer wall of the vibrating screen close to the screen box, a bracket for supporting the screen box and vibrating appropriately during the vibration process fixedly connected to the lower end of the vibrating screen, a gathering guide mechanism is provided above the screen, oblique drainage mechanisms are provided on both sides of the inner wall of the screen box, and annular adsorption mechanisms are provided on both sides of the screen;

[0012] The gathering and guiding mechanism is used to help evenly distribute the soil on the surface of the screen;

[0013] The oblique drainage mechanism is used to directly guide large particle materials into the large-diameter mesh;

[0014] The annular adsorption mechanism is used to temporarily fix the materials when the materials are gathered.

[0015] Furthermore, the gathering guide mechanism includes a support plate fixedly connected to the inner wall of the screen box, the upper surface of the support plate on the side away from the vibration motor is fixedly connected to a telescopic cylinder, the upper end of the telescopic cylinder on the side away from the support plate is fixedly connected to an external clip, the upper surface of the external clip on the side away from the telescopic cylinder is fixedly connected to a touch switch, the outer wall of the external clip is rotatably connected to a plurality of connecting rods, the ends of the plurality of connecting rods away from the external clip are rotatably connected to a gathering piece, and the bottom of the ends of the plurality of gathering pieces away from the connecting rod are fixedly connected to a pulley.

[0016] Furthermore, one end of the touch switch away from the external buckle is electrically connected to the upper surface of the telescopic cylinder, the outer wall of the external buckle is provided with multiple inner grooves, and multiple connecting rods are rotatably connected to the multiple inner grooves provided on the outer wall of the external buckle, and the multiple connecting rods are distributed in a ring shape.

[0017] Furthermore, a plurality of slide rails symmetrically distributed in a ring shape are provided on the surface of one side of the support plate close to the gathering piece, and the plurality of gathering pieces are slidably connected to the interior of the plurality of slide rails symmetrically distributed in a ring shape on the surface of the support plate close to the gathering piece, and the bottom ends of the plurality of pulleys away from the gathering piece are attached to the upper surface of the screen.

[0018] Furthermore, the oblique drainage mechanism includes an arc-connecting plate fixedly connected to the outer wall of one side of the gathering piece, a clamping shaft is provided inside the arc-connecting plate on the side away from the gathering piece, a turntable is fixedly connected to the outer wall of one end of the clamping shaft away from the arc-connecting plate, a threaded rod is fixedly connected to the axis of the outer wall of the turntable away from the clamping shaft, a moving block is provided on the outer wall of the threaded rod, both side outer walls of the moving block are rotatably connected to short-circuit rods, both ends of the two short-circuit rods away from the moving block are rotatably connected to flip plates, and the bottom ends of the outer walls of both sides of the flip plate away from the short-circuit rods are fixedly connected to fixed blocks.

[0019] Furthermore, a through arc groove is provided at one end of the arc connecting plate away from the gathering piece, and the clamping shaft is clamped in the through arc groove provided at the end of the arc connecting plate away from the gathering piece, and the clamping shaft is fixedly connected to the eccentric position of the turntable.

[0020] Furthermore, the threaded rod and the moving block constitute a ball screw structure, the outer wall of the flip plate is provided with a plurality of circular through holes, the bottom end of the flip plate abuts against the upper surface of the screen, and the fixed block is fixedly connected to the inner wall of the screen box on the side away from the flip plate.

[0021] The cam is fixedly provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip, and the toothed connecting strip is connected with the toothed connecting strip on the toothed connecting strip.

[0022] Furthermore, a plurality of annular through holes are provided on the surface of the suction cup and are symmetrically distributed on the surface of the sleeve plate, and the initial position of the suction cup is on the same vertical plane as the screen.

[0023] Furthermore, the side of the connecting disk away from the sleeve shaft is fixedly connected to the lower end of the support plate, and the end of the sleeve shaft close to the connecting disk is rotatably connected to the outer surface of the connecting disk.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The present invention utilizes the gathering parts and the connecting rod to cooperate with each other. The gathering and guiding mechanism can concentrate the soil sample more on the screen, reduce the dispersion and splashing of the soil during the screening process, and enable more soil particles to contact the screen, thereby improving the screening efficiency; secondly, the gathering and guiding mechanism can ensure that the soil particles are more evenly distributed on the screen during the screening process, reduce the phenomenon of missed screening due to particle dispersion, and improve the accuracy of screening; in addition, the gathering and guiding mechanism can exert additional force on the soil particles through a certain mechanical force, making it easier for them to pass through the screen, especially for some soil particles that are more sticky or difficult to separate. This enhancement effect is particularly obvious; in addition, the gathering and guiding mechanism can help reduce the phenomenon that large particles or impurities in the soil sometimes clog the screen, and by changing the movement trajectory or speed of the soil particles, the clogged particles are easier to be removed; and the gathering and guiding mechanism can also reduce the direct contact between workers and mechanical equipment during the screening process, reducing the risk of work-related injuries.

[0026] (2) The present invention utilizes the mutual cooperation of the flip plate and the threaded rod, and through the oblique drainage mechanism, it can realize the graded screening of soil and improve the overall screening efficiency; secondly, the oblique drainage mechanism can automatically guide the large-particle material to the large-diameter mesh, reducing the need for manual intervention and further accelerating the screening speed; in addition, by automatically guiding to the large-diameter mesh, it can effectively avoid the problem that large-particle material is easy to cause blockage in the small-diameter mesh, thereby improving the smoothness and accuracy of screening; in addition, graded screening helps to more accurately separate soil particles of different particle sizes, meeting the soil particle size requirements of different application scenarios; and by reducing the residence time of large-particle material in the small-diameter mesh during the screening process, the service life of the screen can be extended and the replacement cost can be reduced.

[0027] (3) The present invention utilizes the suction cup and the connecting block to cooperate with each other. The annular adsorption mechanism can effectively separate the fine particles, wet sticky substances, etc. adhering to the screen or the surface of the material through the adsorption force during the material gathering process, thereby reducing their interference in the screening process; secondly, the regular adsorption and release actions can also help clean the screen, prevent the screen holes from being blocked, and maintain the patency of the screen; in addition, by reducing the adhesion of the material, the material can pass through the screen more smoothly, thereby improving the speed and efficiency of screening; and the annular adsorption mechanism can guide the material to be screened according to a predetermined path, reduce the disordered movement of the material on the screen, and improve the accuracy and stability of screening; furthermore, after reducing the adhesion of the material, the screening result is more accurate and can better meet the requirements for the particle size of the material; at the same time, after the adhered impurities and fine particles are effectively separated, the possibility of them mixing into the target material can be reduced, thereby improving the quality of the screened product and extending the service life of the screen by reducing the blockage and wear of the screen, thereby reducing the frequency and cost of replacing the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the gathering and guiding mechanism of the present invention;

[0030] Figure 3 This is a three-dimensional schematic diagram of the positional relationship between the external buckle and the connecting rod of the present invention;

[0031] Figure 4 This is a schematic diagram of the three-dimensional structure of the telescopic cylinder and the external buckle position relationship of the present invention;

[0032] Figure 5 This is a schematic diagram of the three-dimensional structure of the positional relationship between the arc connecting plate and the turntable of the present invention;

[0033] Figure 6 This is a schematic diagram of the three-dimensional structure of the positional relationship between the threaded rod and the moving block of the present invention;

[0034] Figure 7 This is a schematic diagram of the three-dimensional structure of the crank and the connecting buckle position relationship of the present invention;

[0035] Figure 8 It is a three-dimensional structural diagram of the position relationship between the sleeve plate and the suction cup of the present invention.

[0036] The numbers in the figure are: 1. Vibrating screen; 11. Screen; 12. Vibrating motor; 13. Discharge port; 14. Bracket; 15. Screen box; 2. Gathering guide mechanism; 21. Support plate; 22. Telescopic cylinder; 23. External buckle; 24. Touch switch; 25. Connecting rod; 26. Gathering piece; 27. Pulley; 3. Oblique drainage mechanism; 31. Arc plate; 32. Clamping shaft; 33. Turntable; 34. Thread Rod; 35, moving block; 36, short-circuit rod; 37, flip plate; 38, fixed block; 4, annular adsorption mechanism; 41, rotating shaft; 42, crank; 43, connecting buckle; 44, snap plate; 45, rotating rod shaft; 46, deflection long block; 47, rotating shaft; 48, connecting block; 49, connecting block; 410, sleeve plate; 411, suction cup; 412, long shaft; 413, sleeve shaft; 414, connecting plate. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] Embodiments of the present invention

[0039] A soil multi-layer screening device, reference Figure 1 As shown, it includes a vibrating screen 1 with a rectangular frame structure, a screen 11 for screening materials in the form of mesh materials is fixedly connected to the upper end of the vibrating screen 1, a screen box 15 for carrying the screen 11 and supporting the entire screening process is fixedly connected to the inner side of the vibrating screen 1 close to the screen 11, a vibration motor 12 for driving the screen box 15 and the screen 11 to vibrate is fixedly connected to the outer wall of one side of the vibrating screen 1, a discharge port 13 for discharging the screened materials is fixedly connected to the outer wall of the one side of the vibrating screen 1 close to the screen box 15, and a bracket 14 for supporting the screen box 15 and performing appropriate vibration during the vibration process is fixedly connected to the lower end of the vibrating screen 1;

[0040] In view of the above-mentioned soil multi-layer screening device, it can be specifically implemented as follows:

[0041] A gathering guide mechanism 2 is provided above the screen 11, oblique drainage mechanisms 3 are provided on both sides of the inner wall of the screen box 15, and annular adsorption mechanisms 4 are provided on both sides of the screen 11;

[0042] refer to Figure 2 As shown, the gathering and guiding mechanism 2 is used to help evenly distribute the soil on the surface of the screen 11;

[0043] refer to Figure 3 As shown, the gathering guide mechanism 2 includes a support plate 21 fixedly connected to the inner wall of the screen box 15, a telescopic cylinder 22 is fixedly connected to the upper surface of the support plate 21 on the side away from the vibration motor 12, an external clip 23 is fixedly connected to the upper end of the telescopic cylinder 22 on the side away from the support plate 21, a touch switch 24 is fixedly connected to the upper surface of the external clip 23 on the side away from the telescopic cylinder 22, a plurality of connecting rods 25 are rotatably connected to the outer wall of the external clip 23, and a gathering piece 26 is rotatably connected to one end of the plurality of connecting rods 25 away from the external clip 23, and a pulley 27 is fixedly connected to the bottom of one end of the plurality of gathering pieces 26 away from the connecting rod 25;

[0044] refer to Figure 4 As shown, one end of the touch switch 24 away from the external buckle 23 is electrically connected to the upper surface of the telescopic cylinder 22. The outer wall of the external buckle 23 is provided with a plurality of inner slots. A plurality of connecting rods 25 are rotatably connected to the plurality of inner slots provided on the outer wall of the external buckle 23. The plurality of connecting rods 25 are distributed in a ring shape.

[0045] Summary 1: Compared with the prior art in which soil splashes during the screening process, the gathering and guiding mechanism 2 of the present invention can concentrate the soil sample more on the screen 11, reduce the dispersion and splashing of the soil during the screening process, and allow more soil particles to contact the screen 11, thereby improving the screening efficiency; secondly, through the gathering and guiding mechanism 2, it can be ensured that the soil particles are more evenly distributed on the screen 11 during the screening process, reducing the omission phenomenon caused by particle dispersion and improving the accuracy of screening; in addition, the gathering and guiding mechanism 2 can exert additional force on the soil particles through a certain mechanical force, making it easier for them to pass through the screen 11, especially for some soil particles with high viscosity or difficult to separate, this enhancement effect is particularly obvious; in addition, the gathering and guiding mechanism 2 can help reduce the phenomenon that large particles or impurities in the soil sometimes clog the screen 11, and by changing the movement trajectory or speed of the soil particles, the clogged particles are easier to be removed; and the gathering and guiding mechanism 2 can also reduce the direct contact between workers and mechanical equipment during the screening process, thereby reducing the risk of work-related injuries.

[0046] refer to Figure 5 As shown, the oblique drainage mechanism 3 is used to directly guide large particle materials into the large-diameter mesh;

[0047] refer to Figure 5As shown, the oblique drainage mechanism 3 includes an arc-connecting plate 31 fixedly connected to the outer wall of one side of the gathering member 26, a clamping shaft 32 is provided inside the arc-connecting plate 31 on the side away from the gathering member 26, a turntable 33 is fixedly connected to the outer wall of the end of the clamping shaft 32 away from the arc-connecting plate 31, a threaded rod 34 is fixedly connected to the axis of the outer wall of the turntable 33 away from the clamping shaft 32, a moving block 35 is provided on the outer wall of the threaded rod 34, and short-circuit rods 36 are rotatably connected to the outer walls of both sides of the moving block 35. The ends of the two short-circuit rods 36 away from the moving block 35 are rotatably connected to flip plates 37, and the bottom ends of the outer walls of the flip plates 37 away from the short-circuit rods 36 are fixedly connected to fixed blocks 38;

[0048] refer to Figure 5 As shown, the end of the arc connecting plate 31 away from the gathering member 26 is provided with a through arc groove, and the clamping shaft 32 is clamped in the through arc groove of the end of the arc connecting plate 31 away from the gathering member 26. The clamping shaft 32 is fixedly connected to the eccentric position of the rotating disk 33;

[0049] refer to Figure 6 As shown, the threaded rod 34 and the movable block 35 form a ball screw structure, the outer wall of the flip plate 37 is provided with a plurality of circular through holes, the bottom end of the flip plate 37 abuts against the upper surface of the screen 11, and the fixed block 38 is fixedly connected to the inner wall of the screen box 15 on the side away from the flip plate 37;

[0050] Summary 2: Compared with the clogging and accumulation of large particle materials in small-diameter meshes in the prior art, the present invention can achieve graded screening of soil through the oblique drainage mechanism 3, thereby improving the overall screening efficiency; secondly, the oblique drainage mechanism 3 can automatically guide large particle materials to the large-diameter meshes, reducing the need for manual intervention and further accelerating the screening speed; in addition, by automatically guiding to the large-diameter meshes, the problem of large particle materials easily causing clogging in small-diameter meshes can be effectively avoided, thereby improving the smoothness and accuracy of screening; in addition, graded screening helps to more accurately separate soil particles of different particle sizes, meeting the soil particle size requirements of different application scenarios; and by reducing the residence time of large particle materials in the small-diameter meshes during the screening process, the service life of the screen 11 can be extended and the replacement cost can be reduced.

[0051] refer to Figure 7 As shown, the annular adsorption mechanism 4 is used to temporarily fix the material when the material is gathered;

[0052] refer to Figure 7As shown, the annular adsorption mechanism 4 includes a rotating shaft 41 fixedly connected to the outer wall of the end of the threaded rod 34 away from the turntable 33, the outer wall of the rotating shaft 41 on the side away from the threaded rod 34 is rotatably connected to a crank 42, the outer wall of the crank 42 on the side away from the rotating shaft 41 is rotatably connected to a connecting buckle 43, the outer wall of the end of the connecting buckle 43 away from the crank 42 is fixedly connected to a snap disk 44, the end of the snap disk 44 away from the connecting buckle 43 is fixedly connected to a rotating rod shaft 45, the end of the rotating rod shaft 45 away from the snap disk 44 is fixedly connected to a deflection long block 46, and the end of the deflection long block 46 away from the rotating rod shaft 45 is rotatably connected to a rotating rod The shaft 47 is fixedly connected to a connecting block 48 on the outer wall of the rotating shaft 47 away from the deflection long block 46, and the outer wall of the connecting block 48 away from the rotating shaft 47 is fixedly connected to a connecting block 49, and the outer wall of the connecting block 49 away from the connecting block 48 is fixedly connected to a sleeve plate 410, and the outer wall of the sleeve plate 410 away from the connecting block 49 is fixedly connected to a suction cup 411, and the outer wall of the sleeve plate 410 away from the suction cup 411 is fixedly connected to a long shaft 412, and the outer wall of the long shaft 412 away from the sleeve plate 410 is sleeved with a sleeve shaft 413, and the end of the sleeve shaft 413 away from the long shaft 412 is provided with a connecting disc 414;

[0053] refer to Figure 7 As shown, the surface of the suction cup 411 is provided with a plurality of annular through holes which are symmetrically distributed on the surface of the sleeve plate 410. The initial position of the suction cup 411 is on the same vertical plane as the screen 11.

[0054] refer to Figure 8 As shown, the side of the connecting disk 414 away from the sleeve shaft 413 is fixedly connected to the lower end of the support plate 21, and the end of the sleeve shaft 413 close to the connecting disk 414 is rotatably connected to the outer surface of the connecting disk 414;

[0055] Summary 3: Compared with the prior art, the screen 11 has residues left on it. The annular adsorption mechanism 4 of the present invention can effectively separate fine particles, wet and sticky substances, etc. adhering to the screen 11 or the surface of the material through adsorption force during the material gathering process, thereby reducing their interference in the screening process; secondly, regular adsorption and release actions can also help clean the screen 11, prevent the screen holes from being blocked, and maintain the patency of the screen 11; in addition, by reducing material adhesion, the material can pass through the screen 11 more smoothly, thereby improving the screening speed and efficiency; and the annular adsorption mechanism 4 can guide the material to be screened according to a predetermined path, reduce the disordered movement of the material on the screen 11, and improve the accuracy and stability of the screening; furthermore, after reducing the adhesion of the material, the screening results are more accurate and can better meet the requirements for the particle size of the material; at the same time, after the adhered impurities and fine particles are effectively separated, the possibility of them mixing into the target material can be reduced, thereby improving the quality of the screened product and extending the service life of the screen 11 by reducing the blockage and wear of the screen 11, thereby reducing the frequency and cost of replacing the screen 11.

[0056] The complete working principle and steps of the above embodiment are as follows:

[0057] Initial definition: The vibrating screen 1 is a device used for material grading and screening. Its working process involves the coordinated operation of multiple key components. The entire process is aimed at separating the materials according to particle size through the screen 11, thereby achieving efficient material processing.

[0058] First, the material is evenly fed into the screen box 15 of the vibrating screen 1 from the feed port. The feed port is usually designed so that the material can be evenly distributed on the entire surface of the screen 11 of the screen box 15. This uniform distribution is crucial to the screening effect because it can ensure that the load of the screen 11 is evenly distributed and avoid local overload.

[0059] When the vibration motor 12 is activated, the vibrations it generates are transmitted to the screen box 15 via the vibrator. The primary function of the vibration motor 12 is to generate periodic vibrations, which cause the screen box 15 and screen mesh 11 to vibrate at a specific frequency and amplitude. The intensity and frequency of the vibrations can be adjusted to optimize the screening effect based on the material properties and screening requirements. This vibration causes the screen mesh 11 to continuously vibrate up and down within the screen box 15, while also producing slight horizontal oscillations. This vibrational motion encourages the material to continuously roll and move across the screen mesh 11.

[0060] Under the action of vibration, larger particles are intercepted by screen 11 and retained on it. Smaller particles, however, are able to penetrate the pores of screen 11 and fall into the lower portion of screen box 15. At this point, the lower portion of screen box 15 is equipped with multiple discharge ports 13 for discharging materials of different particle sizes. In this way, vibrating screen 1 can effectively classify materials into several different grades, meeting the requirements of different particle sizes during production.

[0061] The support 14 is an important component of the vibrating screen 1. It is used to support the screen box 15 and the screen 11, ensuring that they remain stable during vibration. A good support and shock absorption system can improve the screening efficiency and the service life of the equipment.

[0062] When using:

[0063] The steps of the gathering and guiding mechanism 2 that helps to evenly distribute the soil on the surface of the screen 11 are as follows:

[0064] like Figures 2 to 4As shown, after the material is evenly fed into the screen box 15 of the vibrating screen 1 from the feed port, the operator presses the touch switch 24 at the upper end of the external buckle 23, and the activation of the touch switch 24 drives the telescopic cylinder 22 electrically connected to one end of the touch switch 24 to extend to the lower end, so that the external buckle 23 fixedly connected to the outer wall of the telescopic cylinder 22 will move downward synchronously, and then the multiple connecting rods 25 connected to the inner groove opened on the outer wall of the external buckle 23 will be rotated outward as the external buckle 23 moves downward, so that the external buckle 23 connected to the connecting rod 25 will be rotated outward. The gathering piece 26 on the outer wall of one end of the connecting rod 25 will realize the displacement action of moving outward on the slide rail provided on the lower surface of the support plate 21 as the connecting rod 25 deflects outward, thereby the pulley 27 fixedly connected to the lower end of the gathering piece 26 will be displaced synchronously with the outward displacement action of the gathering piece 26 on the slide rail provided on the lower surface of the support plate 21. In this way, the simultaneous outward displacement action of multiple pulleys 27 distributed in an annular shape can realize the soil on the surface of the screen 11 being flattened and gathered to the surrounding areas, thereby ensuring that all soil particles contact the screen 11;

[0065] Directly guide large particles into the oblique drainage mechanism with large-diameter mesh. 3 steps:

[0066] like Figures 5 and 6 As shown, when the gathering member 26 moves outward on the slide rail opened on the lower surface of the support plate 21, it will drive the arc plate 31 fixedly connected to the outer wall of the gathering member 26 to move synchronously, and then the card shaft 32 engaged in the arc groove opened on the outer wall of one end of the arc plate 31 will be pushed to move up and down in the arc groove, so that the turntable 33 eccentrically fixed to the outer wall of one end of the card shaft 32 will rotate with the up and down movement of the card shaft 32, and then the threaded rod 34 fixedly connected to the outer wall of one side of the turntable 33 will rotate with the rotation of the turntable 33. The rotating block 35 of the ball screw structure will slide on the outer wall of the threaded rod 34 to the side away from the turntable 33, and then the short-circuit rods 36 connected to the outer walls of both sides of the rotating block 35 will deflect outwards as the moving block 35 slides. As a result, the flip plate 37, which is initially horizontal, will deflect upward to an inclined state as the short-circuit rods 36 deflect. Therefore, large particles in the soil that fall into the screen box 15 will slide to the large-diameter mesh as the flip plate 37 tilts and rises.

[0067] 4 steps of the ring adsorption mechanism used to temporarily fix the material when the material is gathered:

[0068] like Figures 7 and 8As shown, when the threaded rod 34 rotates, the rotating shaft 41 fixedly connected to the outer wall of the threaded rod 34 will rotate, and then the crank 42 connected to the outer wall of one side of the rotating shaft 41 will rotate, and the connecting buckle 43 fixedly connected to the outer wall of the bottom end of the crank 42 will rotate with the rotation of the crank 42, so the snap plate 44 fixedly connected to one end of the connecting buckle 43 and the rotating rod shaft 45 fixedly connected to one end of the snap plate 44 will deflect with the rotation of the crank 42, so the deflection long block 46 fixedly connected to the outer wall of one end of the rotating rod shaft 45 will also rotate with the deflection of the rotating rod shaft 45, so the rotation of the deflection long block 46 will pull the rotating shaft 47 fixedly connected to the outer wall of one side of the deflection long block 46 to rotate. The rotation of the rotating shaft 47 causes the connecting block 48 fixedly connected to the outer wall of one side of the rotating shaft 47 to deflect and rotate, and the connecting block 49 fixedly connected to the outer wall of the connecting block 48 will also move together with the deflection and rotation of the connecting block 48, and then the outer wall sleeve 410 fixedly connected to one end of the connecting block 49 will first deflect downward with the deflection and rotation of the connecting block 49. In addition, the downward deflection of the sleeve 410 will also drive the long axis 412 and the sleeve 413 to deflect on the surface of the connecting disk 414, so that the suction cup 411 fixedly connected to the outer wall of one side of the sleeve 410 will contact the surface of the screen 11, thereby adsorbing the material and temporarily fixing the material when the material is gathered, thereby reducing the mutual adhesion and accumulation of the material.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A soil multi-layer screening device, comprising a vibrating screen of a rectangular frame structure, wherein a screen for screening materials in the form of a mesh material is fixedly connected to the upper end of the vibrating screen, a screen box for carrying the screen and supporting the entire screening process is fixedly connected to the inner side of the vibrating screen close to the screen, a vibration motor for driving the screen box and the screen to vibrate is fixedly connected to the outer wall of one side of the vibrating screen close to the screen box, a discharge port for discharging the screened material is fixedly connected to the outer wall of the vibrating screen close to the screen box, and a bracket for supporting the screen box and performing appropriate vibration during the vibration process is fixedly connected to the lower end of the vibrating screen, characterized in that: A gathering guide mechanism is provided above the screen, oblique drainage mechanisms are provided on both sides of the inner wall of the screen box, and annular adsorption mechanisms are provided on both sides of the screen; The gathering and guiding mechanism is used to help evenly distribute the soil on the surface of the screen; the oblique drainage mechanism is used to directly guide large particles of material into the large-diameter mesh; the annular adsorption mechanism is used to temporarily fix the material when the material is gathered; The gathering guide mechanism includes a support plate fixedly connected to the inner wall of the screen box, the upper surface of the support plate on the side away from the vibration motor is fixedly connected to a telescopic cylinder, the upper end of the telescopic cylinder on the side away from the support plate is fixedly connected to an external clip, the upper surface of the external clip on the side away from the telescopic cylinder is fixedly connected to a touch switch, the outer wall of the external clip is rotatably connected to a plurality of connecting rods, the ends of the plurality of connecting rods away from the external clip are rotatably connected to a gathering piece, and the bottoms of the ends of the plurality of gathering pieces away from the connecting rods are fixedly connected to a pulley; The oblique drainage mechanism includes an arc-connecting plate fixedly connected to the outer wall of one side of the gathering piece, a clamping shaft is provided inside the arc-connecting plate on the side away from the gathering piece, a turntable is fixedly connected to the outer wall of one end of the clamping shaft away from the arc-connecting plate, a threaded rod is fixedly connected to the axis center of the outer wall of the turntable away from the clamping shaft, a moving block is provided on the outer wall of the threaded rod, both sides of the outer walls of the moving block are rotatably connected to short-circuit rods, and both ends of the two short-circuit rods away from the moving block are rotatably connected to flip plates, and the bottom ends of the outer walls of both sides of the flip plate away from the short-circuit rods are fixedly connected to fixed blocks; The arc connecting plate is provided with a through arc groove at one end away from the gathering piece, the clamping shaft is clamped in the through arc groove at the end away from the gathering piece, and the clamping shaft is fixedly connected to the eccentric position of the turntable; The threaded rod and the moving block form a ball screw structure, the outer wall of the flip plate is provided with a plurality of circular through holes, the bottom end of the flip plate abuts against the upper surface of the screen, and the side of the fixed block away from the flip plate is fixedly connected to the inner wall of the screen box.

2. A soil multi-layer screening device according to claim 1, characterized in that: One end of the touch switch away from the external buckle is electrically connected to the upper surface of the telescopic cylinder. The outer wall of the external buckle is provided with multiple inner grooves. Multiple connecting rods are rotatably connected to the multiple inner grooves provided on the outer wall of the external buckle, and the multiple connecting rods are distributed in a ring shape.

3. The soil multi-layer screening device according to claim 2, characterized in that: The support plate is provided with a plurality of slide rails symmetrically distributed in a ring shape on the surface of one side close to the gathering piece, and the plurality of gathering pieces are slidably connected to the interior of the plurality of slide rails symmetrically distributed in a ring shape on the surface of the support plate close to the gathering piece, and the bottom ends of the plurality of pulleys away from the gathering piece are attached to the upper surface of the screen.

4. The soil multi-layer screening device according to claim 1, characterized in that: The cam is fixedly provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip, and the toothed connecting strip is connected with the toothed connecting strip at the bottom end.

5. The soil multi-layer screening device according to claim 4, characterized in that: The surface of the suction cup is provided with a plurality of annular through holes which are symmetrically distributed on the surface of the sleeve plate. The initial position of the suction cup is on the same vertical plane as the screen.

6. The soil multi-layer screening device according to claim 5, characterized in that: The side of the connecting disk away from the sleeve shaft is fixedly connected to the lower end of the support plate, and the end of the sleeve shaft close to the connecting disk is rotatably connected to the outer surface of the connecting disk.

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