A soil dry-wet dual-purpose screening device

Abstract

The present invention discloses a soil dry-wet dual-purpose screening device, belonging to the field of soil screening. A soil dry-wet dual-purpose screening device includes a support frame, and further includes: a rotary push coarse screening assembly, which is fixed on one side of the support frame; wherein, the rotary push coarse screening assembly includes a casing, and a transmission auger is rotatably installed inside the casing fixed on the support frame. The transmission auger includes a large auger and a small auger, and the small auger is arranged inside the main body of the large auger; a fine screening mechanism, which is fixed on the other side of the support frame, and the rotary push coarse screening assembly and the fine screening mechanism arranged on the support frame perform an integrated soil screening action; through the coordinated work of the rotary push coarse screening assembly and the fine screening mechanism, the present invention realizes the screening of particles with different particle sizes. The transmission auger in the casing performs preliminary screening, and the fine screening mechanism performs secondary screening through a sieve mesh, separating small stones from qualified soil, improving the screening accuracy and the output rate of available soil, optimizing the screening process, and reducing the problem of sieve mesh blockage.

Description

Technical Field

[0001] The invention relates to the technical field of soil screening, and in particular to a soil dry and wet dual-purpose screening device. Background Art

[0002] Existing mechanical soil screening devices mainly include drum screens, vibrating screens, swing screens, fixed grid screens, roller screens, probability screens, cyclone screens, airflow screens, and ultrasonic screens. In principle, they can be divided into screens that use the relative motion between the screen grid and the material. Among them, the drum screen, vibrating screen, swing screen, fixed grid screen, ultrasonic screen, etc., have the biggest feature that the screen grid and the material on the grid will produce relative motion, and the material that can pass through the grid will fall under the action of gravity; the roller screen uses the material to push the material in a fixed direction on multiple groups of rollers, and the material falls through the gap between the rollers to achieve screening; the cyclone screen makes the material produce centrifugal motion, and uses the different movement radius of the material under the centrifugal motion due to different density to screen; the airflow screen uses the airflow to entrust the material to be screened. Under a certain airflow, the material has different heights under the airflow due to different weights, so it is screened.

[0003] Among them, the most common ones used for screening soil are vibrating screens, drum screens and fixed grid screens; although other types of screens can be used for soil screening, they are limited by the screening principle and it is difficult to scale up the equipment.

[0004] Specifically, the drum screen mainly consists of four parts: a support frame, a power source, a drum and a screen. The power source applies a torque to the drum, causing the drum to rotate. The screen grille is attached to the outside of the drum. After the material is put into the drum, the material mainly exists at the lowest point of the drum due to gravity. After the drum rotates, the material is lifted in one direction. After being lifted to a certain angle, the force of the material along the tangent direction of the drum is greater than the friction force, and the material slides downward and moves relative to the screen. Part of the material is naturally discharged from the screen; the material that cannot pass through the screen is discharged from the drum as the drum rotates;

[0005] The vibrating screen is composed of a vibrator, a bracket, a screen plate, etc. During the operation of the vibrating screen, the vibrator causes the screen plate to reciprocate in one direction or multiple directions. After the material is put on the screen plate, it is still relative to the ground. After the vibrating screen moves, due to inertia, the material also shows a state similar to being still relative to the ground. At this time, the material and the screen plate produce relative motion. Due to gravity, the part of the material that can pass through the screen plate will fall into the next level, thus completing the screening operation.

[0006] The fixed grid screen has no power source and is composed of a bracket and a fixed grid fixed on the bracket. When the material is poured from the top of the fixed grid screen, the angle of the fixed grid screen causes the material to move downward due to gravity, so that the material that can pass through the grid falls from the grid to the bottom of the grid to complete the screening.

[0007] Specifically, when the commonly used soil screening devices in current engineering practice screen plastic soil, due to the component of the screening external force applied by the screening device perpendicular to the sieve sheet grid, the plastic soil particles are continuously compressed during screening and are prone to sticking to each other to form lumps, which will cause blockage of the sieve holes, resulting in problems such as a decrease in separation efficiency and a reduction in the actual output of screenable soil.

[0008] Among them, the separation efficiency refers to the separation ability of soil and impurities, and the output refers to the quantity of available soil obtained. The present invention proposes an improved soil screening device. Summary of the Invention

[0009] The object of the present invention is to solve the problems in the prior art that when the commonly used soil screening devices in current engineering practice, such as drum screens, vibrating screens, and ordinary screens, screen plastic soil, since the external force applied by the screening device is in the same direction as the gravity direction, that is, the external force acts along the gravity direction, the soil particles are continuously compressed during screening and are prone to sticking to each other to form a block structure, which will cause blockage of the sieve holes, resulting in a decrease in separation efficiency and a reduction in the actual output of screenable soil.

[0010] Among them, the separation efficiency refers to the separation ability of soil and impurities, and the output refers to the quantity of available soil obtained. The present invention proposes an improved soil dry-wet dual-purpose screening device.

[0011] To achieve the above object, the present invention adopts the following technical solutions:

[0012] A soil dry-wet dual-purpose screening device, including a support frame, further including: a rotary push coarse screening component, the rotary push coarse screening component is fixed on one side of the support frame and is used to receive materials for large stone screening actions; among them, the rotary push coarse screening component includes a machine shell, and a transmission auger is rotatably installed inside the machine shell fixed on the support frame. The transmission auger includes a large auger and a small auger, and the small auger is arranged inside the main body of the large auger and is used for grading and initially screening large stones of different sizes; a fine screening mechanism, the fine screening mechanism is fixed on the other side of the support frame and is used to receive the materials transmitted by the rotary push coarse screening component for small stone screening actions, and the rotary push coarse screening component and the fine screening mechanism arranged on the support frame perform an integrated soil screening action.

[0013] The screening device further includes a redispersing component, the redispersing component is arranged at the lower output end of the rotary push coarse screening component and is used to receive the materials coarsely screened by the rotary push coarse screening component, realize the crushing of dry materials and the dispersion of wet materials, and transmit them to the fine screening mechanism after being dispersed by the redispersing component.

[0014] To achieve multiple drives, preferably, the screening device further includes a drive assembly that drives the rotary pushing coarse screening assembly and the redispersing assembly respectively. The drive assembly includes a first motor, and the output end of the first motor fixed to the lower part of the support frame is fixedly connected with a double-layer runner. The double-layer runner drives a first runner by belt transmission; the double-layer runner also drives a second runner by belt transmission.

[0015] To enable two conveying augers to cooperate in screening materials of different particle sizes, further, there are two conveying augers. The two conveying augers are symmetrically arranged, and the conveying blades of the two conveying augers are staggered. A side discharge port for discharging large stones is opened on one side of the machine shell; the large auger is hollow, and after the shaft body of the small auger is slidably installed inside the large auger, the spiral blade of the small auger is welded to the outside of the shaft body of the small auger, and the large auger is also provided with a spiral gap for the lateral movement of the small auger.

[0016] To achieve the linkage of two conveying augers that rotate left and right respectively, further, gears are respectively fixedly connected to the outer parts of the large augers rotatably installed in the machine shell, and two adjacent gears are meshed and connected. The first runner is fixed to the outside of one side of the large auger.

[0017] To enable the small auger to synchronously expand and contract when the conveying auger rotates, assisting in discharging large stones, further, a guiding track is opened at one end of the small auger. The upper part of the support plate fixed to one side of the machine shell is sleeved on the shaft body of the small auger, and a guiding ball is fixedly connected inside the support plate. The guiding ball is located inside the guiding track. When the small auger rotates, it makes a lateral reciprocating motion under the constraint of the guiding ball.

[0018] To use the lateral reciprocating movement of the small auger to extract water source, furthermore, a water tank is fixedly installed on the other side of the machine shell. A piston plate fixed to one end of the small auger is slidably installed inside the water tank. The output end of the water tank is fixedly connected with a spray plate fixed to the upper part of the machine shell through a transmission pipe. One-way valves for connecting the water source and connecting the transmission pipe are respectively fixedly installed at the input end and the output end of the water tank. When the small auger makes a lateral reciprocating motion, the medium for extracting the water source by the water tank is transmitted into the spray plate, and the spray plate makes a soil spraying and softening separation action on the materials inside the machine shell.

[0019] To achieve the transfer of the rotary pushed and coarsely screened materials, further, the redispersing assembly includes a rotating rod. The rotating rod is rotatably installed on the upper part of the guiding plate fixed to the lower part of the machine shell. One end of the rotating rod passes through the guiding plate and is fixedly connected with the second runner; a plurality of blades are fixedly installed on the outside of the rotating rod. The blades are axially arranged on the outside of the rotating rod, and adjacent blades are arranged with a lateral gap.

[0020] To achieve secondary fine screening of the material pushed and screened by rotation, further, the fine screening mechanism includes a screening cylinder, a screening gap is provided inside the screening cylinder, the screening cylinder is rotatably installed on the upper part of the support frame, rotating shafts are rotatably installed on the upper parts of both sides of the support frame, driving wheels are respectively fixedly installed on the outer parts of each rotating shaft, and the driving wheels are in interference contact with the annular groove of the screening cylinder.

[0021] To drive the screening cylinder, furthermore, a second motor is fixedly installed on the lower part of one side of the support frame, a third runner fixed to the output end of the second motor is in belt transmission with a fourth runner fixed to one end of the rotating shaft, and the motor drives the screening cylinder to perform rotational fine screening actions.

[0022] Compared with the prior art, the present invention provides a soil dry-wet dual-purpose screening device, which has the following beneficial effects:

[0023] 1. This soil dry-wet dual-purpose screening device realizes effective screening of soil particles with different particle sizes through the coordinated work of the rotation-pushing coarse screening component and the fine screening mechanism. The rotation-pushing coarse screening component is fixed on one side of the support frame and is mainly used for preliminary screening of large stones. After the material enters the machine shell, the internal transmission auger starts to operate. The transmission auger is composed of a large auger and a small auger. The small auger is arranged inside the main body of the large auger. The two work together to classify and screen stones of different sizes. The large auger is mainly responsible for transporting and separating larger particles, while the small auger adjusts by sliding to adapt to different material states, enabling further screening of small particles. At the same time, during the screening process, the rotation of the auger can effectively prevent blockage caused by the agglomeration or caking of soil particles, improving the screening efficiency. The material after preliminary screening is dispersed and broken by the redispersing mechanism and then transported to the fine screening mechanism. The fine screening mechanism is fixed on the other side of the support frame, and its main function is to perform more refined screening on the material after rotation-pushing coarse screening. The material is secondarily screened through the screening mesh holes to effectively separate small stones from qualified soil, thereby improving the screening accuracy and the output rate of available soil. In addition, the linkage of the rotation-pushing coarse screening component and the fine screening mechanism realizes an integrated screening process, which not only optimizes the screening process but also improves the overall screening efficiency, enabling it to adapt to soil screening requirements in different environments, thus effectively solving the problem of low screening efficiency of traditional screening devices due to soil adhesion and blockage of the screen holes.

[0024] The parts not involved in this device are the same as or can be implemented using the prior art. The present invention uses the rotation-pushing coarse screening component to preliminarily screen large stones, and then the fine screening mechanism performs secondary screening. Different particle-size soils are screened through the linkage of the transmission auger, improving the screening efficiency and reducing screen blockage, and realizing integrated screening operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a soil dry-wet dual-purpose screening device proposed by the present invention;

[0026] Figure 2 Schematic structural diagram of the rotary pushing coarse screening component of a soil dry-wet dual-purpose screening device proposed by the present invention;

[0027] Figure 3 Schematic structural diagram of the casing of a soil dry-wet dual-purpose screening device proposed by the present invention;

[0028] Figure 4 Schematic structural diagram of the support plate of a soil dry-wet dual-purpose screening device proposed by the present invention;

[0029] Figure 5 Schematic structural diagram of the transmission auger of a soil dry-wet dual-purpose screening device proposed by the present invention;

[0030] Figure 6 Schematic structural diagram of the large auger of a soil dry-wet dual-purpose screening device proposed by the present invention;

[0031] Figure 7 Schematic structural diagram of the small auger of a soil dry-wet dual-purpose screening device proposed by the present invention;

[0032] Figure 8 Of a soil dry-wet dual-purpose screening device proposed by the present invention Figure 7 Schematic diagram of the structure at position A.

[0033] In the figure: 1, support frame; 2, rotary pushing coarse screening component;

[0034] 201, casing; 202, guide plate; 203, transmission auger;

[0035] 2031, large auger; 2032, small auger; 2033, spiral gap; 2034, guide track;

[0036] 204, gear; 205, side discharge port; 206, support plate; 207, guide ball;

[0037] 3, redispersion component;

[0038] 301, rotating rod; 302, blade;

[0039] 4, drive component;

[0040] 401, first motor; 402, double-layer runner; 403, first runner; 404, second runner;

[0041] 5, rotating shaft; 6, drive wheel; 7, sieve cylinder; 8, annular groove; 9, second motor; 10, third runner; 11, fourth runner; 12, water storage tank; 13, transmission pipe; 14, spray plate; 15, piston plate. Detailed implementation manners

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0044] Embodiment

[0045] Refer to Figures 1-8 , a soil dry-wet dual-purpose screening device, including a support frame 1, and further including: a rotary pushing coarse screening assembly 2, the rotary pushing coarse screening assembly 2 is fixed on one side of the support frame 1 and is used to receive materials for large stone screening actions; wherein, the rotary pushing coarse screening assembly 2 includes a machine shell 201, and a transmission auger 203 is rotatably installed inside the machine shell 201 fixed on the support frame 1. The transmission auger 203 includes a large auger 2031 and a small auger 2032. The small auger 2032 is arranged inside the main body of the large auger 2031 and is used for primary screening of large stones with different sizes; a fine screening mechanism, the fine screening mechanism is fixed on the other side of the support frame 1 and is used to receive the materials transmitted by the rotary pushing coarse screening assembly 2 for small stone screening actions. The rotary pushing coarse screening assembly 2 and the fine screening mechanism arranged on the support frame 1 perform an integrated soil screening action.

[0046] The above-mentioned soil dry-wet dual-purpose screening device realizes the effective screening of soil particles with different particle sizes through the coordinated work of the rotary pushing coarse screening component 2 and the fine screening mechanism. The rotary pushing coarse screening component 2 is fixed on one side of the support frame 1 and is mainly used for preliminary screening of large stones. After the material enters the machine shell 201, the internal transmission auger 203 starts to operate. The transmission auger 203 is composed of a large auger 2031 and a small auger 2032. The small auger 2032 is arranged inside the main body of the large auger 2031. The two work together to classify and screen stones of different sizes. The large auger 2031 is mainly responsible for transporting and separating larger particles, while the small auger 2032 adjusts by sliding to adapt to different material states, enabling further screening of small particles. At the same time, during the screening process, the rotation of the auger can effectively prevent soil particles from agglomerating or caking, improving the screening efficiency. The material after preliminary screening is transported to the fine screening mechanism. The fine screening mechanism is fixed on the other side of the support frame 1. Its main function is to perform more refined screening on the material after rotary pushing and coarse screening, and perform secondary screening on the material through the screening mesh holes, effectively separating small stones from qualified soil, thereby improving the screening accuracy and the output rate of available soil. In addition, the linkage of the rotary pushing coarse screening component 2 and the fine screening mechanism realizes an integrated screening process, which not only optimizes the screening process but also improves the overall screening efficiency, enabling it to adapt to the soil screening requirements in different environments, thus effectively solving the problem of low screening efficiency caused by soil adhesion and clogging of the sieve holes in traditional screening devices.

[0047] Preferably, the screening device further includes a redispersing component 3. The redispersing component 3 is arranged at the lower output end of the rotary pushing coarse screening component 2 and is used to receive the material rotary pushed and coarsely screened by the rotary pushing coarse screening component 2, realize the crushing of dry materials and the dispersion of wet materials, and transmit the dispersed material to the fine screening mechanism after passing through the redispersing component 3.

[0048] The redispersing component 3 is installed at the lower output end of the rotary pushing coarse screening component 2, responsible for receiving the material after rotary pushing and coarse screening and stably transporting it to the fine screening mechanism, preventing material accumulation or blockage. It mainly promotes the material to move forward through the rotation of the rotating rod 301 and the blade 302, ensuring the continuity of the screening process, making the screened material evenly distributed, improving the screening efficiency, and at the same time optimizing the material conveying path, providing a more uniform screening input for the fine screening mechanism, thereby enhancing the overall screening effect.

[0049] To achieve multiple drives, preferably, the screening device further includes a drive component 4. The drive component 4 drives the rotary pushing coarse screening component 2 and the redispersing component 3 respectively. The drive component 4 includes a first motor 401. The output end of the first motor 401 fixed at the lower part of the support frame 1 is fixedly connected with a double-layer runner 402. The double-layer runner 402 drives a first runner 403 by belt transmission; the double-layer runner 402 also drives a second runner 404 by belt transmission.

[0050] The drive assembly 4 is powered by the first motor 401 and realizes multiple drive functions through the double-layer runner 402. The first motor 401 is fixed at the lower part of the support frame 1, and its output end is connected to the double-layer runner 402. The double-layer runner 402 is driven by the first motor 401 to drive the first runner 403 and the second runner 404 to rotate synchronously. The design of the double-layer runner 402 enables one motor to drive two runners. Among them, the first runner 403 is mainly responsible for driving the rotary pushing coarse sieve assembly 2 to ensure the stable operation of the rotary pushing coarse sieve process. The second runner 404 is used to drive the redispersing assembly 3 to ensure that the material after rotary pushing coarse sieve can be smoothly transported to the fine sieve mechanism. Due to the structural characteristics of the double-layer runner 402, the first runner 403 and the second runner 404 operate synchronously through an accurate gear 204 transmission mechanism, ensuring the coordinated work of the rotary pushing coarse sieve assembly 2 and the redispersing assembly 3, making the conveying and screening of materials during the screening process more efficient. The design of the double-layer runner 402 can reduce energy consumption and improve transmission efficiency, making the entire screening device more stable and reliable during operation. This synchronous drive mechanism reduces the complexity of requiring multiple motors, simplifies the drive structure, and reduces the equipment maintenance cost.

[0051] To enable the two conveying augers 203 to cooperate in screening materials of different particle sizes, further, there are two conveying augers 203, the two conveying augers 203 are symmetrically arranged, and the conveying blades 302 of the two conveying augers 203 are staggered. A side discharge port 205 for discharging large stones is provided on one side of the machine shell 201; the large auger 2031 is hollow, and after the small auger 2032 is slidably installed on the shaft body of the large auger 2031, the spiral blade 302 of the small auger 2032 is welded to the outside of the shaft body of the small auger 2032. The large auger 2031 is also provided with a spiral gap 2033 for the lateral movement of the small auger 2032.

[0052] Through the collaborative work of two symmetrically arranged conveying augers 203, efficient screening of materials with different particle sizes is achieved. Each conveying auger 203 is composed of a large auger 2031 and a small auger 2032. The large auger 2031 has a hollow structure, and the shaft of the small auger 2032 is slidably installed inside the large auger 2031, and a spiral blade 302 is welded outside the shaft. During the screening process, the large auger 2031 is responsible for conveying and preliminarily separating larger particles, while the small auger 2032 can slide horizontally inside the large auger 2031, and its blades 302 are arranged staggeredly to optimize the material screening path, ensuring the effective separation of particles of different sizes. At the same time, the large auger 2031 is provided with a spiral gap 2033 to provide space for the horizontal movement of the small auger 2032, enabling it to make adaptive adjustments according to the material flow conditions and enhancing the screening effect. The side discharge port 205 on one side of the casing 201 is specifically used to discharge the large stones remaining after rotary pushing and coarse screening to prevent them from affecting the subsequent screening process. This structure can not only improve the screening accuracy but also prevent the material from being blocked or agglomerated during the screening process, improving the overall screening efficiency and the stability of the equipment operation.

[0053] To realize the linkage of two conveying augers 203 rotating left and right respectively, further, gears 204 are respectively fixedly connected to the outer parts of the large augers 2031 each rotatably installed in the casing 201, and two adjacent gears 204 are meshed and connected. The first runner 403 is fixed to the outer side of one side of the large auger 2031.

[0054] To realize the linkage work of two conveying augers 203, gears 204 are respectively installed on the outer parts of each large auger 2031. Through the meshing connection of adjacent gears 204, the two augers can rotate synchronously, one auger rotates left and the other rotates right to ensure the stable transmission and effective screening of materials. The gear 204 transmission structure enables the two augers to work together, avoiding material accumulation or uneven screening caused by inconsistent rotation of the augers, improving the screening efficiency. The first runner 403 is fixed to the outer side of one side of the large auger 2031 and is synchronously matched with the rotation of the large auger 2031 through the gear 204, providing precise power control for the entire screening process and ensuring the stability and efficient operation of the screening device.

[0055] To realize that when the conveying auger 203 rotates, the small auger 2032 can synchronously expand and contract to assist in discharging large stones. Further, a guiding track 2034 is opened at one end of the small auger 2032, and the upper part of a support plate 206 fixed to one side of the casing 201 is sleeved outside the shaft of the small auger 2032, and a guiding ball 207 is fixedly connected inside the support plate 206. The guiding ball 207 is located inside the guiding track 2034. When the small auger 2032 rotates, it makes a horizontal reciprocating motion under the constraint and cooperation of the guiding ball 207.

[0056] The synchronous telescopic movement of the small auger 2032 is used to assist in discharging large stones. The small auger 2032 is provided with a guiding track 2034, which is fixed on the support plate 206 on one side of the machine housing 201. Inside the support plate 206, a guiding ball 207 is installed. The guiding ball 207 cooperates with the guiding track 2034, enabling the small auger 2032 to perform a lateral reciprocating movement when rotating. This design ensures that the small auger 2032 can effectively expand and contract during the screening process, avoiding jamming of soil and large stones, realizing the separation of materials from the soil when discharging the materials, and preventing the screening effect from being affected by the accumulation of large stones. At the same time, the lateral reciprocating movement of the small auger 2032 not only optimizes the discharge of large stones but also effectively improves the screening efficiency, preventing the backlog or accumulation of materials and providing a smooth material flow for subsequent screening steps.

[0057] To use the lateral reciprocating movement of the small auger 2032 for extracting water source, further, a water tank 12 is fixedly installed on the other side of the machine housing 201. A piston plate 15 fixed at one end of the small auger 2032 is slidably installed inside the water tank 12. The output end of the water tank 12 is fixedly connected to a spray plate 14 fixed on the upper part of the machine housing 201 through a transmission pipe 13. Check valves for connecting the water source and the transmission pipe 13 are respectively fixedly installed at the input end and the output end of the water tank 12. When the small auger 2032 performs a lateral reciprocating movement, the medium for extracting the water source from the water tank 12 is transmitted to the inside of the spray plate 14, and the spray plate 14 performs a soil spraying and softening separation action on the materials inside the machine housing 201.

[0058] To further improve the screening efficiency and the effect of material separation, the device also designs a water tank 12 system. The water tank 12 is installed on the other side of the machine housing 201. A piston plate 15 is arranged inside the water tank 12. The piston plate 15 is connected to one end of the small auger 2032 and is slidably installed inside the water tank 12. The function of the water tank 12 is to extract the water source and deliver the water source to the spray plate 14 through a check valve. Check valves for connecting the water source and the transmission pipe 13 are respectively installed at the input end and the output end of the water tank 12 to ensure the unidirectionality of the water source flow. When the small auger 2032 performs a lateral reciprocating movement, the piston plate 15 drives the water tank 12 to extract the medium of the water source and deliver it to the spray plate 14. The spray plate 14 sprays the materials inside the machine housing 201, softening and separating the soil particles by using water flow, making the soil looser and reducing the risk of screen clogging. The hydraulic spraying not only effectively softens the plastic soil but also helps the materials to be quickly separated during the screening process, improving the screening accuracy and efficiency. This design significantly improves the working effect of soil screening and the material output quality by combining the dual effects of mechanical force and hydraulic force.

[0059] To achieve the transfer of the swirling and pushing coarse-screened materials, further, the redispersing assembly 3 includes a rotating rod 301. The upper part of a guide plate 202 fixed to the lower part of the casing 201 is rotatably installed with the rotating rod 301. One end of the rotating rod 301 passes through the guide plate 202 and is fixedly connected to the second runner 404. A number of blades 302 are fixedly installed outside the rotating rod 301. The blades 302 are circumferentially arranged outside the rotating rod 301, and adjacent blades 302 are arranged with a lateral gap.

[0060] The redispersing assembly 3 is used to achieve the transfer of the swirling and pushing coarse-screened materials, mainly including the structures of the rotating rod 301, the guide plate 202 and the blades 302. The rotating rod 301 is installed on the guide plate 202 at the lower part of the casing 201 and can rotate freely. One end of the rotating rod 301 passes through the guide plate 202 and is fixedly connected to the second runner 404. The rotating rod 301 is driven to rotate through power transmission. A number of blades 302 are fixedly installed uniformly along the axial circumference outside the rotating rod 301. The spacing of the blades 302 is optimized to ensure that the materials can move smoothly during the swirling and pushing process. The arrangement of the blades 302 enables the materials to be evenly pushed to the fine-screening mechanism during rotation, avoiding material accumulation or jamming. At the same time, it can also ensure that the soil and stones after swirling and coarse screening can be conveyed in a predetermined direction, further improving the stability and uniformity of screening. The gap design of the blades 302 of the redispersing assembly 3 helps to reduce material adhesion, enabling the materials to be conveyed to the fine-screening mechanism more smoothly without being blocked due to high soil humidity or high plasticity. Generally speaking, the redispersing assembly 3 can achieve the efficient conveying of the swirling and pushing coarse-screened materials, reduce blockage by uniform pushing, and improve the operation efficiency of the entire screening system.

[0061] To achieve the secondary fine screening of the swirling and pushing coarse-screened materials, further, the fine-screening mechanism includes a sieve drum 7. A screening gap is provided inside the sieve drum 7. The sieve drum 7 is rotatably installed on the upper part of the support frame 1. Rotating shafts 5 are rotatably installed on the upper parts of both sides of the support frame 1. A driving wheel 6 is fixedly installed on the outside of each rotating shaft 5. The driving wheel 6 is in interference contact with the annular groove 8 of the sieve drum 7. To drive the sieve drum 7, further, a second motor 9 is also fixedly installed at the lower part of one side of the support frame 1. A third runner 10 fixed to the output end of the second motor 9 is in belt transmission with a fourth runner 11 fixed to one end of the rotating shaft 5. The motor drives the sieve drum 7 to perform a rotating fine-screening action.

[0062] To achieve the secondary fine screening of the rotary-pushing coarse-screened materials, the screening device further designs a fine screening mechanism. The core component of the fine screening mechanism is the sieve drum 7. There is a screening gap inside the sieve drum 7 for further screening tiny stones. The sieve drum 7 is rotatably installed on the upper part of the support frame 1 to ensure uniform screening of the materials. On the upper parts of both sides of the support frame 1, rotating shafts 5 are respectively installed. On the outer part of each rotating shaft 5, a driving wheel 6 is fixedly installed. The driving wheel 6 is in interference contact with the annular groove 8 of the sieve drum 7 to ensure that the sieve drum 7 can rotate stably driven by the driving wheel 6. During the rotation of the sieve drum 7, under the combined action of centrifugal force and gravity, stones of different particle sizes are fully separated. Among them, the smaller stones fall through the screening gap and enter the final output of tiny stones, while the larger particles are retained inside the sieve drum 7 and move towards the outlet direction with the continuous rotation of the sieve drum 7 for final discharge. The design of the sieve drum 7 fully considers the possible blockage problems during the screening process. Through the reasonable arrangement of the screening gap and the continuous rotation of the sieve drum 7, the screening process is made more efficient and smooth, avoiding the accumulation of materials inside the sieve drum 7 and affecting the screening effect.

[0063] To ensure that the sieve drum 7 can operate stably and achieve automatic screening, a second motor 9 is fixedly installed at the lower part of one side of the support frame 1. The output end of the second motor 9 is fixedly connected to a third runner 10. The third runner 10 is connected to a fourth runner 11 fixedly installed at one end of the rotating shaft 5 through a belt drive. When the second motor 9 is started, the power is transmitted from the third runner 10 to the fourth runner 11, and finally drives the sieve drum 7 to rotate. The fine screening mechanism realizes the further screening of the rotary-pushing coarse-screened materials through the rotation of the sieve drum 7 and ensures the effective separation of stones of different particle sizes during the screening process. The rotation of the sieve drum 7 makes the materials continuously tumble and move inside the sieve drum 7, improving the screening efficiency and preventing the screening holes from being blocked, ensuring the long-term stable operation of the screening device. This driving method can ensure that the sieve drum 7 rotates stably while providing sufficient power support, making the screening process more efficient and automatic, thus greatly improving the overall performance of the screening device and the screening efficiency of tiny stones.

[0064] In the present invention, through the collaborative work of the rotary pushing coarse screening assembly 2 and the fine screening mechanism, effective screening of soil particles with different particle sizes is achieved. The rotary pushing coarse screening assembly 2 is fixed on one side of the support frame 1 and is mainly used for preliminary screening of large stones. After the material enters the casing 201, the internal transmission auger 203 starts to operate. The transmission auger 203 is composed of a large auger 2031 and a small auger 2032. The small auger 2032 is arranged inside the main body of the large auger 2031, and the two work together to classify and screen stones of different sizes. The large auger 2031 is mainly responsible for transporting and separating larger particles, while the small auger 2032 adjusts by sliding to adapt to different material states, enabling further screening of small particles. At the same time, during the screening process, the rotation of the auger can effectively prevent soil particles from agglomerating or caking, improving the screening efficiency. The material that has completed the preliminary screening is transported to the fine screening mechanism, which is fixed on the other side of the support frame 1. Its main function is to perform more refined screening on the material after rotary pushing and coarse screening, and conduct secondary screening on the material through the screening mesh holes, effectively separating small stones from the qualified soil, thereby improving the screening accuracy and the output rate of available soil. In addition, the linkage of the rotary pushing coarse screening assembly 2 and the fine screening mechanism realizes an integrated screening process, which not only optimizes the screening process but also improves the overall screening efficiency, enabling it to adapt to the soil screening requirements in different environments, thus effectively solving the problem of low screening efficiency caused by soil adhesion and blockage of the screen holes in traditional screening devices.

[0065] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A soil wet and dry dual-purpose screening device, comprising a support frame (1), characterized in that: Also includes: A rotary push coarse screen assembly (2), the rotary push coarse screen assembly (2) being fixed to one side of the support frame (1) and being used to receive materials for large stone screening; The rotary push coarse screen assembly (2) comprises a housing (201), wherein a transmission auger (203) is rotatably mounted inside the housing (201) fixed to the support frame (1). The transmission auger (203) comprises a large auger (2031) and a small auger (2032), wherein the small auger (2032) is arranged inside the main body of the large auger (2031) and is used for grading and preliminarily screening large stones of different sizes; A fine screening mechanism, the fine screening mechanism is fixed to the other side of the support frame (1) and is used to receive the material transmitted by the rotary push coarse screening assembly (2) to perform a small stone screening action. The rotary coarse screen assembly (2) and the fine screen mechanism arranged on the support frame (1) perform an integrated soil screening action; Two transmission augers (203) are provided, the two transmission augers (203) are symmetrically arranged, and the transmission blades (302) of the two transmission augers (203) are staggered, and a side discharge port (205) for discharging large stones is opened on one side of the housing (201); The large auger (2031) is hollow, and after the shaft of the small auger (2032) is slidably mounted inside the large auger (2031), the spiral blades (302) of the small auger (2032) are welded to the outside of the shaft of the small auger (2032), and the large auger (2031) is further provided with a spiral gap (2033) for the lateral movement of the small auger (2032); A guide track (2034) is provided at one end of the small auger (2032); an upper portion of a support plate (206) fixed to one side of the housing (201) is sleeved on the outside of the shaft of the small auger (2032); a guide ball (207) is fixedly connected to the inside of the support plate (206); the guide ball (207) is located inside the guide track (2034); when the small auger (2032) rotates, it is constrained by the guide ball (207) to cooperate with the guide ball (207) to perform a lateral reciprocating motion.

2. A soil wet and dry dual-purpose screening device according to claim 1, characterized in that: The screening device further comprises a redispersion component (3), which is arranged at the lower output end of the rotary push coarse screen component (2) and is used to receive the material screened by the rotary push coarse screen component (2), thereby crushing the dry material and dispersing the wet material, and then transmitting the material to the fine screen mechanism after being crushed or dispersed by the redispersion component (3).

3. A soil wet and dry dual-purpose screening device according to claim 2, characterized in that: The screening device further comprises a driving assembly (4), wherein the driving assembly (4) drives the rotary push coarse screen assembly (2) and the redispersion assembly (3) respectively, and the driving assembly (4) comprises a first motor (401), wherein an output end of the first motor (401) fixed to the lower part of the support frame (1) is fixedly connected to a double-layer rotating wheel (402), The double-layer rotating wheel (402) is driven by a first rotating wheel (403); The double-layer rotating wheel (402) is also driven by a second rotating wheel (404).

4. A soil wet and dry dual-purpose screening device according to claim 3, characterized in that: Each large auger (2031) rotatably mounted in the housing (201) is fixedly connected to a gear (204) on the outside, two adjacent gears (204) are meshingly connected, and the first rotating wheel (403) is fixed to the outside of one side of the large auger (2031).

5. The device for screening wet and dry soil according to claim 1, characterized in that: A water tank (12) is fixedly mounted on the other side of the housing (201); a piston plate (15) fixed at one end of the small auger (2032) is slidably mounted inside the water tank (12); an output end of the water tank (12) is fixedly connected to a spray plate (14) fixed on the upper portion of the housing (201) via a transmission pipe (13); One-way valves for connecting to a water source and a transmission pipe (13) are fixedly mounted at the input end and the output end of the water tank (12), respectively. When the small auger (2032) performs a transverse reciprocating motion, the medium extracted from the water source by the water tank (12) is transmitted to the inside of the spray plate (14), and the spray plate (14) performs a soil spraying, softening and separation action on the material inside the housing (201).

6. The device for screening wet and dry soil according to claim 3, characterized in that: The redispersion assembly (3) comprises a rotating rod (301) which is rotatably mounted on the upper part of a guide plate (202) fixed at the lower part of the housing (201). One end of the rotating rod (301) passes through the guide plate (202) and is fixedly connected to the second rotating wheel (404); A plurality of blades (302) are fixedly mounted on the outside of the rotating rod (301); the blades (302) are arranged in a circumferential array outside the rotating rod (301), and adjacent blades (302) are arranged with transverse gaps.

7. The device for screening wet and dry soil according to claim 1, characterized in that: The fine screening mechanism comprises a screen drum (7), a screening gap is provided inside the screen drum (7), and the screen drum (7) is rotatably mounted on the upper part of the support frame (1). Rotating shafts (5) are rotatably mounted on the upper parts of both sides of the support frame (1), and a driving wheel (6) is fixedly mounted on the outside of each rotating shaft (5), and the driving wheel (6) is in engagement contact with the annular groove (8) of the screen drum (7).

8. The device for screening wet and dry soil according to claim 7, characterized in that: A second motor (9) is also fixedly mounted on the lower part of one side of the support frame (1), and a third rotating wheel (10) fixed to the output end of the second motor (9) is driven by a fourth rotating wheel (11) fixed to one end of the rotating shaft (5), so that the motor drives the screen drum (7) to perform a rotating fine screening action.

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