Dry and wet dual-purpose screening device for soil

Abstract

The invention discloses a dry and wet dual-purpose screening device for soil, and belongs to the field of soil screening. A dry and wet dual-purpose soil screening device comprises a supporting frame and further comprises a rotary pushing coarse screening assembly fixed to one side of the supporting frame and a rotary pushing coarse screening assembly fixed to the other side of the supporting frame. Wherein the rotary pushing coarse screening assembly comprises a machine shell, a conveying auger is rotationally installed in the machine shell fixed to a supporting frame, the conveying auger comprises a large auger body and a small auger body, and the small auger body is arranged in a large auger body; the fine screening mechanism is fixed to the other side of the supporting frame, and the rotary pushing coarse screening assembly and the fine screening mechanism which are arranged on the supporting frame conduct integrated soil screening action; through cooperative work of the rotary pushing coarse screening assembly and the fine screening mechanism, screening of particles with different particle sizes is achieved, a conveying auger in the machine shell conducts primary screening, the fine screening mechanism conducts secondary screening through a screen, small stones are separated from qualified soil, the screening precision is improved, the output rate of available soil is increased, and the screening process is optimized; and the problem of screen mesh blockage is reduced.

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; 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. 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.

[0005] Specifically, when the soil screening device commonly used in current engineering practice screens plastic soil, the screening external force applied by the screening device exists in the vertical force of the screen grid, which causes the plastic soil particles to be continuously squeezed during screening, and easily adhere to each other to form blocks, which will cause the screen holes to be blocked, thereby causing the separation efficiency to decrease and the actual output of the soil that can be screened to decrease. The separation efficiency refers to the ability to separate soil from impurities, and the output refers to the amount of usable soil obtained. The present invention proposes an improved soil screening device. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that when commonly used soil screening devices in the prior art such as drum screens, vibrating screens and ordinary screens in current engineering practice screen plastic soil, the external force applied by the screening device is consistent with the direction of gravity, that is, the external force acts in the direction of gravity, which causes the soil particles to be continuously compressed during screening, and are easy to stick to each other to form a block structure, which in turn causes the sieve holes to be blocked, thereby causing the separation efficiency to decrease and the actual output of the sieveable soil to decrease. The separation efficiency refers to the ability to separate soil from impurities, and the output refers to the amount of usable soil obtained. The present invention proposes an improved soil dry and wet dual-purpose screening device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A soil wet and dry dual-purpose screening device comprises a support frame, and also comprises: a rotary push coarse screen assembly, wherein the rotary push coarse screen assembly is fixed on one side of the support frame and is used to receive materials for large stone screening; wherein the rotary push coarse screen assembly comprises a casing, and a transmission auger is rotatably installed inside the casing fixed to the support frame, wherein the transmission auger comprises 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 preliminarily screening large stones of different sizes; a fine screening mechanism, wherein the fine screening mechanism is fixed on the other side of the support frame and is used to receive materials transmitted by the rotary push coarse screen assembly for small stone screening, and the rotary push coarse screen assembly and the fine screening mechanism arranged on the support frame perform an integrated soil screening action.

[0008] The screening device also includes a redispersion component, which is arranged at the lower output end of the rotary push coarse screen component and is used to receive the material screened by the rotary push coarse screen component to achieve the crushing of dry materials and the dispersion of wet materials, and transmit the dispersed materials to the fine screen mechanism after being dispersed by the redispersion component.

[0009] To achieve multiple drives, preferably, the screening device also includes a driving assembly, which drives the rotary push coarse screen assembly and the redispersion assembly respectively, and the driving assembly includes a first motor, and a double-layered rotating wheel is fixedly connected to the output end of the first motor fixed to the lower part of the support frame, and the double-layered rotating wheel is driven by the first rotating wheel; the double-layered rotating wheel is also driven by the second rotating wheel.

[0010] In order to achieve the cooperation of two transmission augers to screen materials of different particle sizes, further, two transmission augers are provided, the two transmission augers are symmetrically arranged, and the transmission blades of the two transmission augers are staggered, and a side discharge port for discharging large stones is provided on one side of the casing; the large auger is hollow, and after the small auger shaft is slidably installed inside the large auger, the spiral blades of the small auger are welded to the outside of the shaft of the small auger, and the large auger is also provided with a spiral gap for the lateral movement of the small auger.

[0011] In order to realize the linkage of two left-rotating and right-rotating transmission augers respectively, further, each large augers rotatably installed in the casing are fixedly connected to the outside with gears, two adjacent gears are meshed and connected, and the first wheel is fixed to the outside of one side of the large augers.

[0012] In order to realize the synchronous extension and retraction of the small auger when the transmission auger rotates, so as to assist the large stone in discharging. Furthermore, a guide track is provided at one end of the small auger, and the upper part of the support plate fixed on one side of the casing is sleeved on the outside of the shaft of the small auger, and a guide ball is fixedly connected to the inside of the support plate, and the guide ball is located inside the guide track. When the small auger rotates, it is constrained by the guide ball to perform lateral reciprocating motion.

[0013] In order to use the lateral reciprocating movement of the small auger to extract water, further, a water tank is fixedly installed on the other side of the casing, and a piston plate fixed at one end of the small auger is slidably installed inside the water tank. The output end of the water tank is fixedly connected to a spray plate fixed on the upper part of the casing through a transmission pipe. The input and output ends of the water tank are respectively fixedly installed with one-way valves for connecting the water source and the transmission pipe. When the small auger performs lateral reciprocating motion, the medium of the water source extracted by the water tank is transmitted to the inside of the spray plate, and the spray plate performs a soil spray softening and separation action on the material inside the casing.

[0014] In order to realize the transfer of the rotary push coarse screen material, further, the redispersion component includes a rotating rod, which is rotatably installed on the upper part of the guide plate fixed at the lower part of the casing, and one end of the rotating rod passes through the guide plate and is fixedly connected to the second impeller; a plurality of blades are fixedly installed on the outside of the rotating rod, and the axial array of the blades is arranged on the outside of the rotating rod, and a lateral gap is set between adjacent blades.

[0015] In order to realize secondary fine screening of the rotary push coarse screen material, further, the fine screening mechanism includes a screen cylinder, a screening gap is opened inside the screen cylinder, the screen cylinder is rotatably mounted on the upper part of the support frame, and rotating shafts are rotatably mounted on the upper parts of both sides of the support frame, and a driving wheel is fixedly mounted on the outside of each rotating shaft, and the driving wheel is in engagement with the annular groove of the screen cylinder.

[0016] In order to drive the screen drum, further, a second motor is fixedly installed on the lower part of one side of the support frame, and a third wheel fixed on the output end of the second motor is driven by a fourth wheel fixed on one end of the rotating shaft, and the motor drives the screen drum to rotate and perform fine screening action.

[0017] Compared with the prior art, the present invention provides a soil dry and wet dual-purpose screening device, which has the following beneficial effects: 1. The soil wet and dry dual-purpose screening device realizes effective screening of particles of different particle sizes in the soil through the coordinated work of the rotary push coarse screen component and the fine screen mechanism. The rotary push coarse screen 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 casing, the internal transmission auger starts to operate. The transmission auger consists 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 grade and screen stones of different sizes. The large auger is mainly responsible for conveying and separating larger particles, while the small auger adjusts to different material states through sliding, so that small particles can be further screened. At the same time, during the screening process, the rotation of the auger can effectively prevent soil particles from agglomerating or condensing. The blockage caused by the blocks is improved to improve the screening efficiency. The materials that have completed the preliminary screening are dispersed and crushed by the redispersion mechanism and then transmitted to the fine screening mechanism. The fine screening mechanism is fixed on the other side of the support frame. Its main function is to carry out more fine screening of the materials after the rotary push coarse screening. The materials are screened for the second time through the screening mesh to effectively separate the small stones from the qualified soil, thereby improving the screening accuracy and the output rate of the available soil. In addition, the linkage of the rotary push coarse screen assembly and the fine screening mechanism realizes an integrated screening process, which not only optimizes the screening process, but also improves the overall screening efficiency, so that it can adapt to the soil screening needs in different environments, thereby effectively solving the problem of low screening efficiency of traditional screening devices due to soil adhesion and clogging of the screen holes.

[0018] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The present invention uses a rotary coarse screen component to preliminarily screen large stones, and then a fine screen mechanism performs secondary screening. The soil of different particle sizes is screened through the linkage of the transmission auger, which improves the screening efficiency and reduces the clogging of the screen, thereby realizing an integrated screening operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a soil dry and wet dual-purpose screening device proposed by the present invention; Figure 2 This is a schematic diagram of the structure of a rotary push coarse screen assembly of a soil dry and wet dual-purpose screening device proposed by the present invention; Figure 3 A schematic diagram of the casing structure of a dry and wet soil screening device proposed by the present invention; Figure 4 A schematic diagram of the support plate structure of a soil dry and wet dual-purpose screening device proposed by the present invention; Figure 5 A schematic diagram of the transmission auger structure of a dry and wet soil screening device proposed by the present invention; Figure 6 A schematic diagram of the structure of a large auger of a soil dry and wet dual-purpose screening device proposed by the present invention; Figure 7 A schematic diagram of the structure of a small auger of a soil dry and wet dual-purpose screening device proposed by the present invention; Figure 8 A soil dry and wet dual-purpose screening device proposed by the present invention Figure 7 Schematic diagram of the structure at point A in the middle.

[0020] In the figure: 1. Support frame; 2. Rotary push coarse screen assembly; 201, housing; 202, guide plate; 203, transmission auger; 2031, large auger; 2032, small auger; 2033, spiral gap; 2034, guide track; 204, gear; 205, side discharge port; 206, support plate; 207, guide ball; 3. Redisperse components; 301, rotating rod; 302, blade; 4. Drive components; 401, first motor; 402, double-layer rotating wheel; 403, first rotating wheel; 404, second rotating wheel; 5. Rotating shaft; 6. Driving wheel; 7. Screen drum; 8. Annular groove; 9. Second motor; 10. Third rotating wheel; 11. Fourth rotating wheel; 12. Water tank; 13. Transmission pipe; 14. Spray plate; 15. Piston plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 therefore cannot be understood as a limitation on the present invention.

[0023] Example

[0024] Reference Figure 1-Figure 8 A soil dry and wet dual-purpose screening device comprises a support frame 1, and also comprises: a rotary push coarse screen assembly 2, which is fixed on one side of the support frame 1 and is used to receive materials for large stone screening; wherein the rotary push coarse screen assembly 2 comprises a casing 201, and a transmission auger 203 is rotatably installed inside the casing 201 fixed on the support frame 1, and the transmission auger 203 comprises a large auger 2031 and a small auger 2032, and 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, which is fixed on the other side of the support frame 1 and is used to receive materials transmitted by the rotary push coarse screen assembly 2 for small stone screening, and the rotary push coarse screen assembly 2 and the fine screening mechanism arranged on the support frame 1 perform an integrated soil screening action.

[0025] The above-mentioned soil wet and dry dual-purpose screening device realizes effective screening of particles of different particle sizes in the soil through the coordinated work of the rotary push coarse screen component 2 and the fine screen mechanism, wherein the rotary push coarse screen 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 casing 201, the internal transmission auger 203 starts to operate. The transmission auger 203 consists 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 grade and screen stones of different sizes. The large auger 2031 is mainly responsible for conveying and separating larger particles, while the small auger 2032 adapts to different material states through sliding adjustment, so that small particles can be further screened. During the screening process, the rotation of the auger can effectively prevent the agglomeration or agglomeration of soil particles, thereby improving the screening efficiency. The materials that have completed the preliminary screening are transmitted to the fine screening mechanism, which is fixed on the other side of the support frame 1. Its main function is to perform more fine screening on the materials after the rotary coarse screen, and to perform secondary screening on the materials through the screening mesh to effectively separate small stones from qualified soil, thereby improving the screening accuracy and the output rate of available soil. In addition, the linkage between the rotary coarse screen assembly 2 and the fine screen mechanism realizes an integrated screening process, which not only optimizes the screening process, but also improves the overall screening efficiency, so that it can adapt to the soil screening needs in different environments, thereby effectively solving the problem of low screening efficiency of traditional screening devices due to soil adhesion and clogging of the screen holes.

[0026] Preferably, the screening device also includes 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, to achieve crushing of dry materials and dispersion of wet materials, and then transmit the dispersed materials to the fine screening mechanism after being dispersed by the redispersion component 3.

[0027] The redispersion component 3 is installed at the lower output end of the rotary push coarse screen component 2. It is responsible for receiving the material after the rotary push coarse screen and stably conveying it to the fine screen mechanism to prevent material accumulation or blockage. It mainly pushes the material forward through the rotation of the rotating rod 301 and the blade 302, ensuring the continuity of the screening process, making the material under the screen evenly distributed, improving the screening efficiency, and optimizing the material conveying path. Provide more uniform screening input for the fine screen mechanism, thereby improving the overall screening effect.

[0028] To achieve multiple drives, preferably, the screening device also includes a driving component 4, which drives the rotary coarse screen component 2 and the redispersion component 3 respectively. The driving component 4 includes a first motor 401. The output end of the first motor 401 fixed to the lower part of the support frame 1 is fixedly connected with a double-layer rotating wheel 402, and 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.

[0029] The driving component 4 is powered by the first motor 401 and realizes multiple driving functions through the double-layer rotating wheel 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 rotating wheel 402. The double-layer rotating wheel 402 is driven by the first motor 401, driving the first rotating wheel 403 and the second rotating wheel 404 to operate synchronously. The design of the double-layer rotating wheel 402 enables one motor to drive two rotating wheels, wherein the first rotating wheel 403 is mainly responsible for driving the rotary push coarse screening component 2 to ensure the stable operation of the rotary push coarse screening process, and the second rotating wheel 404 is used to drive the redispersion component 3 to ensure the rotary push coarse screening process. The screened material can be smoothly transmitted to the fine screening mechanism. Due to the structural characteristics of the double-layer wheel 402, the first wheel 403 and the second wheel 404 operate synchronously through the precise gear 204 transmission mechanism, ensuring the coordinated work of the rotary push coarse screen component 2 and the redispersion component 3, making the transportation and screening of materials in the screening process more efficient. The design of the double-layer wheel 402 can reduce energy consumption, improve transmission efficiency, and make 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 maintenance cost of the equipment.

[0030] In order to achieve the cooperation of two transmission augers 203 to screen materials of different particle sizes, further, 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 casing 201; the large auger 2031 is hollow, and after the shaft body of the small auger 2032 is slidably installed inside the large auger 2031, the spiral blades 302 of the small auger 2032 are welded to the outside of the shaft body of the small auger 2032, and the large auger 2031 is also provided with a spiral gap 2033 for the lateral movement of the small auger 2032.

[0031] Through the coordinated work of two symmetrically arranged transmission augers 203, efficient screening of materials of different particle sizes is achieved. Each transmission augers 203 is composed of a large augers 2031 and a small augers 2032. The large augers 2031 is a hollow structure, and the shaft of the small augers 2032 is slidably installed inside the large augers 2031, and spiral blades 302 are welded on the outside of the shaft. During the screening process, the large augers 2031 are responsible for conveying and preliminarily separating larger particles, while the small augers 2032 can slide horizontally inside the large augers 2031, and its blades 302 are staggered to optimize the screening process. The material screening path ensures that particles of different sizes can be effectively separated. At the same time, the large auger 2031 is provided with a spiral gap 2033 to provide space for the lateral movement of the small auger 2032, so that it can be adaptively adjusted according to the material flow conditions to enhance the screening effect. The side discharge port 205 on one side of the casing 201 is specifically used to discharge large stones remaining after the rotary coarse screen 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, thereby improving the overall screening efficiency and the stability of equipment operation.

[0032] In order to realize the linkage of two left-rotating and right-rotating transmission augers 203 respectively, further, each large augers 2031 rotatably installed in the casing 201 is fixedly connected to the outside with a gear 204, two adjacent gears 204 are meshed and connected, and the first wheel 403 is fixed to the outside of one side of the large augers 2031.

[0033] In order to realize the linkage operation of the two transmission augers 203, gears 204 are respectively installed on the outside of each large auger 2031. Through the meshing connection of adjacent gears 204, the two augers can operate synchronously, one auger rotates to the left and the other rotates to the right, ensuring stable transmission and effective screening of materials. The gear 204 transmission structure enables the two augers to work together to avoid material accumulation or uneven screening due to inconsistent rotation of the augers, thereby improving the screening efficiency. The first rotor 403 is fixed to the outside of one side of the large auger 2031. Through the synchronous cooperation of the gear 204 and the rotation of the large auger 2031, precise power control is provided for the entire screening process, thereby ensuring the stability and efficient operation of the screening device.

[0034] In order to realize the synchronous extension and retraction of the small auger 2032 when the transmission auger 203 rotates, so as to assist the large stones in discharging. Furthermore, a guide track 2034 is provided at one end of the small auger 2032, and the upper part of the support plate 206 fixed on one side of the casing 201 is sleeved on the outside of the shaft of the small auger 2032, and a guide ball 207 is fixedly connected to the inside of the support plate 206, and 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 in performing lateral reciprocating motion.

[0035] The discharge of large stones is assisted by the synchronous telescopic movement of the small auger 2032. The small auger 2032 is provided with a guide track 2034, which is fixed on a support plate 206 on one side of the casing 201. A guide ball 207 is installed inside the support plate 206. The guide ball 207 cooperates with the guide track 2034, so that the small auger 2032 can make horizontal reciprocating motion when rotating. This design ensures that the small auger 2032 can effectively retract and retract during the screening process to avoid the jamming of soil and large stones, and realize the separation of materials and soil when the materials are discharged, so as to avoid the accumulation of large stones affecting the screening effect. At the same time, the horizontal reciprocating movement of the small auger 2032 not only optimizes the discharge of large stones, but also effectively improves the screening efficiency, prevents the backlog or accumulation of materials, and provides smooth material flow for subsequent screening steps.

[0036] In order to use the lateral reciprocating movement of the small auger 2032 to extract water, further, a water tank 12 is fixedly installed on the other side of the casing 201, and 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 casing 201 through a transmission pipe 13. The input end and output end of the water tank 12 are respectively fixedly installed with a one-way valve for connecting to the water source and the transmission pipe 13. When the small auger 2032 performs a lateral reciprocating motion, the medium of the water source extracted by the water tank 12 is transmitted to the inside of the spray plate 14, and the spray plate 14 performs a soil spray softening and separation action on the material inside the casing 201.

[0037] In order to further improve the screening efficiency and the effect of material separation, the device is also designed with a water tank 12 system. The water tank 12 is installed on the other side of the casing 201. A piston plate 15 is provided in 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 water and transport the water to the spray plate 14 through a one-way valve. The input end and the output end of the water tank 12 are respectively installed with a one-way valve for connecting the water source and the transmission pipe 13 to ensure the unidirectional flow of the water source. The small auger 2032 When performing horizontal reciprocating motion, the piston plate 15 drives the water tank 12 to extract the medium of the water source and transport it to the spray plate 14. The spray plate 14 sprays the material inside the casing 201, and uses the water flow to soften and separate the soil particles, 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 material to be separated quickly during the screening process, thereby 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.

[0038] In order to realize the transfer of the rotary push coarse screen material, the redispersion component 3 further includes a rotating rod 301, which is rotatably installed on the upper part of the guide plate 202 fixed at the lower part of the casing 201, and one end of the rotating rod 301 passes through the guide plate 202 and is fixedly connected to the second impeller 404; a plurality of blades 302 are fixedly installed on the outside of the rotating rod 301, and the blades 302 are circumferentially arrayed on the outside of the rotating rod 301, and lateral gaps are set between adjacent blades 302.

[0039] The redispersion assembly 3 is used to realize the transfer of the rotary push coarse screen material, and mainly includes a rotating rod 301, a guide plate 202 and a blade 302 structure. 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 rotating wheel 404. The rotating rod 301 is driven to rotate by power transmission. A plurality of blades 302 are evenly fixedly installed on the outside of the rotating rod 301 along its axial circumference. The spacing of the blades 302 is optimized to ensure that the material can move smoothly during the rotary push process. The arrangement of the blades 302 makes the material During the rotation process, it is evenly pushed to the fine screening mechanism to avoid material accumulation or jamming. At the same time, it can also ensure that the soil and stones after the rotary coarse screen can be transported in a predetermined direction, further improving the stability and uniformity of the screening. The gap design of the blades 302 of the redispersion component 3 helps to reduce material adhesion, so that the material can be more smoothly transported to the fine screening mechanism without clogging due to high soil moisture or high plasticity. On the whole, the redispersion component 3 can achieve efficient transportation of the rotary coarse screen material, reduce clogging by evenly pushing, and improve the operating efficiency of the entire screening system.

[0040] In order to realize the secondary fine screening of the rotary push coarse screen material, further, the fine screening mechanism includes a screen drum 7, a screening gap is opened inside the screen drum 7, the screen drum 7 is rotatably mounted on the upper part of the support frame 1, and the upper parts of both sides of the support frame 1 are rotatably mounted with a rotating shaft 5, and each rotating shaft 5 is fixedly mounted on the outside of each driving wheel 6, and the driving wheel 6 is in contact with the annular groove 8 of the screen drum 7. In order to realize the driving of the screen drum 7, further, a second motor 9 is fixedly mounted on the lower part of one side of the support frame 1, and a third rotating wheel 10 fixed on the output end of the second motor 9 is driven by a fourth rotating wheel 11 fixed on one end of the rotating shaft 5, and the motor drives the screen drum 7 to perform a rotating fine screening action.

[0041] In order to realize the secondary fine screening of the rotary push coarse screen material, the screening device is further designed with a fine screening mechanism. The core component of the fine screening mechanism is the screen drum 7. A screening gap is arranged inside the screen drum 7 for further screening of tiny stones. The screen drum 7 is rotatably mounted on the upper part of the support frame 1 to ensure that the material can be evenly screened. Rotating shafts 5 are respectively installed on the upper part 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 engaged with the annular groove 8 of the screen drum 7 to ensure that the screen drum 7 can rotate stably under the drive of the driving wheel 6. The screen drum 7 rotates during the rotation process. In the process, the combined effect of centrifugal force and gravity is used to fully separate stones of different particle sizes, wherein smaller stones fall through the screening gaps and enter the final tiny stone output, while larger particles are retained inside the screen drum 7 and move toward the outlet as the screen drum 7 continues to rotate, so as to be finally discharged. The design of the screen drum 7 fully considers the blockage problem that may occur during the screening process. Through the reasonable arrangement of the screening gaps and the continuous rotation of the screen drum 7, the screening process is made more efficient and smooth, and the accumulation of materials inside the screen drum 7 that affects the screening effect is avoided.

[0042] To ensure that the screen drum 7 can operate stably and realize automatic screening, a second motor 9 is fixedly installed on the lower part of one side of the support frame 1, and the output end of the second motor 9 is fixedly connected to the third rotor 10. The third rotor 10 is connected to the fourth rotor 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 to the fourth rotor 11 through the third rotor 10, and finally drives the screen drum 7 to rotate. The fine screening mechanism realizes further screening of the rotary push coarse screening material through the rotation of the screen drum 7, and ensures that stones of different particle sizes can be effectively separated during the screening process. The rotation of the screen drum 7 makes the material constantly roll and move inside the screen drum 7, thereby improving the screening efficiency and preventing the screening holes from being blocked, thereby ensuring that the screening device operates stably for a long time. This driving mode can ensure that the screen drum 7 provides sufficient power support while rotating stably, making the screening process more efficient and automated, thereby greatly improving the overall performance of the screening device and the screening efficiency of tiny stones.

[0043] In the present invention, the effective screening of particles of different particle sizes in the soil is achieved through the coordinated work of the rotary push coarse screen component 2 and the fine screen mechanism, wherein the rotary push coarse screen component 2 is fixed on one side of the support frame 1, and is mainly used for the preliminary screening of large stones. After the material enters the casing 201, the internal transmission auger 203 starts to operate, and 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 grade and screen stones of different sizes, wherein the large auger 2031 is mainly responsible for conveying and separating larger particles, while the small auger 2032 is adjusted to adapt to different material states through sliding, so that small particles can be further screened. At the same time, during the screening process In the process, the rotation of the auger can effectively prevent the agglomeration or agglomeration of soil particles, improve the screening efficiency, and the material that has completed the preliminary screening is transmitted to the fine screening mechanism, which is fixed on the other side of the support frame 1. Its main function is to perform more fine screening on the material after the rotary push coarse screen, and to perform secondary screening on the material through the screening mesh 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 rotary push coarse screen assembly 2 and the fine screen mechanism realizes an integrated screening process, which not only optimizes the screening process, but also improves the overall screening efficiency, so that it can adapt to the soil screening needs in different environments, thereby effectively solving the problem of low screening efficiency of traditional screening devices due to soil adhesion and clogging of the screen holes.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by 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.

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: 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 installed 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 also provided with a spiral gap (2033) for the lateral movement of the small auger (2032).

5. The device for screening wet and dry soil 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).

6. A soil wet and dry dual-purpose screening device according to claim 1, characterized in that: 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.

7. A soil wet and dry dual-purpose screening device according to claim 6, 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).

8. 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.

9. 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).

10. A soil wet and dry dual-purpose screening device according to claim 9, 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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