Agricultural product drying machine with screening function

Abstract

The present application belongs to the technical field of agricultural product sorting, in particular to an agricultural product dryer with screening function; it comprises a vibrating roller, which is arranged between the vibrating screening belts; the two ends of the vibrating roller are rotatably connected with a swing arm and a tension spring; the side of the vibrating screening belt close to the vibrating roller is uniformly and interval arranged with protrusions; in the present application, the materials are slowly put into the shell through the feeding port, the transmission roller is driven to rotate by the work of the first motor, and then the vibrating screening belt is driven to move; as the lower part of the vibrating screening belt is provided with protrusions, when the protrusions contact with the vibrating roller at its lower part during the movement, the swing arm will swing, and the tension spring will be pulled; when the protrusions move to separate from the contact with the vibrating roller, the vibrating roller will quickly impact the vibrating screening belt under the action of the tension spring, so that the particles on the vibrating screening belt are separated under the action of vibration, which can reduce the adhesion of the particles in the screening process and improve the screening reliability of the particles.

Description

Technical Field

[0001] This invention belongs to the field of agricultural product sorting technology, specifically an agricultural product dryer with screening function. Background Technology

[0002] In traditional agricultural product drying processes, harvested materials (such as corn, goji berries, and honeysuckle) often contain impurities (pebbles, clods of soil, broken leaves), immature fruits, and moldy particles. If these foreign components are not removed in advance, they will directly affect the drying effect and the final product quality. On the one hand, the specific heat capacity and thermal conductivity of impurities differ significantly from those of the target agricultural products, which can easily lead to localized excessively high temperatures or excessive moisture residue during the drying process. For example, stones mixed in with grains can absorb and accumulate heat, causing surrounding grains to over-bake and scorch, while moldy particles may spread mold spores in a high-temperature and high-humidity environment, contaminating the entire batch of materials. On the other hand, immature or broken agricultural products have unique moisture content and structural characteristics, which can easily lead to problems such as shriveling and dull color after drying, reducing the commercial value of the product.

[0003] In agricultural production and daily life, there is often a need to screen products. Screening mainly falls into two categories: removing impurities from the product and grading the product according to its quality. Regardless of the type, the fundamental principle is to first find the distinguishing point between the product and the impurities and then use this as the basis for screening. For example, when screening some granular crops, they are often distinguished according to the size of the particles. However, when screening certain crops with sticky surfaces, it is often difficult to obtain reliable screening results by relying solely on particle size. For example, when the surface of harvested grains is still moist and cannot be directly dried (as drying would cause the agricultural products to stick), or when the surface of seeds has unremoved pulp causing stickiness, the particle size will change due to stickiness during screening of these agricultural products, which may lead to misjudgment when screening based on particle size. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes an agricultural product dryer with a screening function. This invention primarily addresses the problem of inaccurate sorting of granular agricultural products with sticky surfaces during the sorting process.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: an agricultural product dryer with screening function, comprising a frame and a shell, the shell being fixedly installed on the upper part of the frame; a feed inlet is provided at the upper end of the shell, and several discharge outlets are provided at the lower end; it also includes two drive rollers disposed inside the shell, the two ends of the drive rollers being rotatably connected to the shell; a vibrating screening belt is provided on the two drive rollers; a No. 1 motor is fixedly installed on the outside of the shell, and the output shaft of the No. 1 motor is fixedly connected to one of the drive rollers; to drive the vibrating screening belt to transmit motion; A vibrating roller is provided between the vibrating roller and the vibrating screening belt; a swing arm is rotatably connected to both ends of the vibrating roller; the end of the swing arm away from the vibrating roller is rotatably connected to the housing; a tension spring is provided on the side of the swing arm near the vibrating screening belt; one end of the tension spring is connected to the swing arm, and the other end is hung on the housing through a bracket; protrusions are evenly spaced on the side of the vibrating screening belt near the vibrating roller. A hot air blower is used to dry the material to be screened. The hot air blower is installed on one side of the housing, and the air inlet of the hot air blower is located inside the vibrating screening belt. The subdivision screening component is used to perform secondary sorting on the materials to be sorted after vibration separation by the above-mentioned vibration screening belt.

[0006] When screening granular products with partially sticky surfaces, the product is slowly fed into the housing through the inlet. Motor No. 1 drives the transmission roller to rotate, which in turn drives the vibrating screening belt. Because the lower part of the vibrating screening belt has raised strips, when these strips contact the vibrating rollers below them during movement, the swing arm swings, causing the tension spring to be stretched. When the raised strips move out of contact with the vibrating rollers, the vibration rollers rapidly impact the vibrating screening belt under the action of the tension springs, causing the particles to separate under the vibration. This reduces particle sticking during screening and improves the reliability of particle screening.

[0007] Preferably, the fine sorting component includes two drive rollers rotatably mounted inside the housing, several support rollers rotatably mounted inside the housing, and an adjusting roller mounted inside the housing via a material discharge adjusting assembly; the material discharge adjusting assembly is used to adjust the installation position of the adjusting roller. It also includes a fine screening belt, which is sequentially wrapped around the drive roller, support roller and adjusting roller; the support roller is located below the adjusting roller, so that the fine screening belt forms several concave structures, which are located directly above the discharge port. A second motor is installed on the outside of the housing, and the output shaft of the second motor is fixedly connected to one of the drive rollers; the rotation of the drive rollers drives the fine screening belt to transmit motion. The screening belt is provided with through holes at even intervals, and the side of the screening belt is provided with slide rails at even intervals; a sliding plate is provided in the slide rail, and through holes are provided on the sliding plate; and aperture adjustment components are provided at both ends of the sliding plate for adjusting the relative position of the through holes and the through holes.

[0008] Since both the vibrating screening belt and the fine screening belt are inclined, by controlling the speed of the motor, the agricultural products after vibrating screening enter the lower position of the fine screening belt. Then, driven by the second motor, the fine screening belt moves upward, which in turn moves the agricultural products upward. Due to the presence of an aperture adjustment component, the aperture of the upper part of the conveyor belt gradually increases as the conveyor belt moves. This results in smaller apertures near the lower end of the inclined conveyor belt and larger apertures near the upper end. This allows smaller particles to pass through the apertures on the fine screening belt, while larger particles are carried upward with the movement of the fine screening belt and fall into the larger apertures at the upper end, thus completing the screening from small to large.

[0009] Preferably, the aperture adjustment assembly includes a mounting base, which is disposed at one end of the sliding plate and mounted on the housing; power springs are evenly spaced on the side of the mounting base near the sliding plate; one end of the power spring is fixedly connected to the mounting base, and the other end of the power spring is fixedly connected to a push plate; the push plate abuts against the sliding plate. An adjustment plate is provided at the other end of the sliding plate, and it abuts against the adjustment plate; the side of the adjustment plate near the sliding plate is set as an inclined surface, and the inclined surface gradually tilts towards the sliding plate from bottom to top; an adjustment unit for horizontally moving the position of the adjustment plate is provided on the side of the adjustment plate away from the sliding plate.

[0010] Because a sliding plate is installed in the slide of the fine screening belt, at the lowest point of the upper layer of the fine screening belt, relative to the highest point of the upper layer, the sliding plate at point a moves more towards the adjustment plate under the action of the power spring. At this time, the positional offset between the through hole and the via hole will be greater, resulting in a smaller sorting aperture at point a. As the inclined surface tilts towards the sliding plate, the area of ​​overlap between the through hole and the via hole will increase closer to point b, thereby increasing the sorting aperture and thus achieving aperture adjustment. Since the fine screening belt is in motion, the use of the inclined surface and the sliding plate and push plate makes the structure of the aperture adjustment component simpler and more feasible.

[0011] Preferably, the adjustment unit includes a decorative cover, which is fixedly installed on one side of the housing; piston cylinders are symmetrically installed inside the decorative cover; a piston rod is slidably connected inside the piston cylinder, and the side of the adjustment plate away from the sliding plate is fixedly connected to the piston rod; A grouting seat is provided on the outside of the decorative cover; the grouting seat is connected to the inside of two piston cylinders through a hose; a movable plate is slidably connected inside the grouting seat, and an adjusting column is rotatably connected to one side of the movable plate; the adjusting column is threadedly connected to the grouting seat.

[0012] During operation, due to the length of the adjusting plate, it is best to move the adjusting plate horizontally simultaneously. Moving it from one side may cause the other side to jam. Furthermore, adjusting only one side will affect the other side, thus impacting the accuracy of the adjustment. Therefore, in this solution, rotating the adjusting column moves the movable plate, which in turn squeezes the medium inside the grouting seat, allowing the medium to evenly enter the piston cylinders on both sides. This causes the piston rod to move, thereby adjusting the position of the adjusting plate. Since the grouting seat is simultaneously inside both piston cylinders, simultaneous adjustment is possible, preventing jamming and improving the accuracy of the adjustment, which in turn improves the accuracy of sorting.

[0013] Preferably, the material feeding adjustment assembly includes a mounting base and a limiting bracket; the mounting base is fixedly connected to the housing; a limiting groove is formed on the mounting base, and the limiting groove is L-shaped; the limiting bracket is slidably connected in the limiting groove, and a return spring is provided inside the mounting base; one end of the return spring is fixedly connected to the inner wall of the mounting base, and the other end abuts against the limiting bracket; an adjusting bolt is threadedly connected to the mounting base; the end of the adjusting bolt passes through the side wall of the mounting base and abuts against the limiting bracket. The housing has a waist-shaped groove, and the end of the adjusting roller passes through the waist-shaped groove and is installed in the mounting base.

[0014] During installation, the adjusting roller is inserted into the limiting seat, and then the limiting seat is slid downwards along the opening of the limiting groove. Once the limiting seat is fully inserted into the limiting groove, the adjusting bolt is rotated. Since the limiting groove is L-shaped, the limiting seat is confined inside the mounting base. Rotating the adjusting bolt then moves the limiting seat within the mounting base. Simultaneously, since the adjusting roller passes through the waist-shaped groove on the housing, its position can be adjusted by rotating the adjusting bolt. By changing the position of the adjusting roller, the area of ​​material receiving and screening at the top of each concave structure can be changed. Because the aperture on the fine screening belt gradually changes, the particle size range of the screened material can be varied with the change in the receiving area, thereby improving the controllability of the screening.

[0015] Preferably, a number of collision strips are spaced apart inside the housing above the vibrating screening belt; the collision strips are fixedly connected to the housing; spherical protrusions are provided below the collision strips; the spherical protrusions are made of flexible material.

[0016] By setting collision bars above the vibrating screening belt and spherical protrusions below the collision bars, the sticky agricultural products on the vibrating screening belt collide with the spherical protrusions on the collision bars when they are vibrated and bounced up. This increases the vibration expansion efficiency of the particles, thereby improving the efficiency of separating the sticky agricultural products. At the same time, the spherical protrusions are made of rubber, which can increase the elasticity of the collision and prevent the agricultural products from breaking, thereby improving the quality and cleanliness of the sorted materials.

[0017] Preferably, the fine screening belt is provided with evenly spaced teeth at both ends on the side near the drive roller; the drive roller is provided with toothed discs at both ends; the fine screening belt and the drive roller are connected by meshing of the teeth and toothed discs.

[0018] Because the fine screening belt is wound around many rollers and has adjustment components during movement, it has a large frictional resistance, which may lead to slippage. Therefore, in this solution, toothed clamps are installed near both ends of the fine screening belt. The meshing of the toothed clamps with the toothed disc improves the reliability of the transmission between the two, thereby ensuring the smooth screening process.

[0019] Preferably, both the through hole and the via are rectangular holes, and their sidewalls in the width direction coincide; chamfers are provided at the edges of both ends of the via.

[0020] By setting the through-hole and the process to a rectangular shape, the overlapping hole remains rectangular even as their positions change. This prevents irregular changes in hole diameter during the transition, improving the controllability of the sorting process. Furthermore, by adding chamfers to the edges of the through-hole, when the sorting hole changes from a larger hole to a smaller one, agricultural products inside the hole are expelled to the upper and lower sides, preventing jamming and improving the stability of the equipment.

[0021] Preferably, the sliding plate has a groove at one end near the adjusting plate, and a ball bearing is connected in the groove, with the ball bearing abutting against the adjusting plate.

[0022] By setting ball bearings at one end of the sliding plate, the friction relationship between the sliding plate and the adjusting plate can be changed to rolling friction. Since the relative positional relationship between the adjusting plate and the sliding plate directly affects the size of the aperture, the friction on the adjusting plate can be reduced, thereby improving the sorting accuracy of the device after long-term use and thus improving the durability of the equipment.

[0023] Preferably, the agricultural product dryer also includes several slide rails installed on the frame, the length of which is at least three times the length of the discharge port; a slider is slidably connected to the slide rail; and a bag support frame is fixedly connected to the slider, the bag support frame being able to support at least two packaging bags side by side.

[0024] By installing a sliding support frame at the bottom of the screening structure, with the length of the support frame being more than three times that of the discharge port, when the packaging bags at one station are full during the packaging process, pushing the support frame will transfer the packaging bags from the next station above and below the discharge port. This achieves the reciprocating motion of the support frame, thereby saving downtime during packaging bag switching and improving packaging efficiency.

[0025] The beneficial effects of this invention are as follows: 1. In this invention, the material is slowly fed into the housing through the inlet. The operation of motor No. 1 drives the transmission roller to rotate, which in turn drives the vibrating screening belt to move. Since the lower part of the vibrating screening belt is provided with protrusions, when the protrusions abut against the vibrating rollers below them during the movement, the swing arm will swing, causing the tension spring to be stretched. When the protrusions move to the point of disengaging from the vibrating rollers, the vibrating rollers will quickly impact the vibrating screening belt under the action of the tension springs, thereby causing the particles on it to separate under the action of vibration. This reduces the adhesion of particles during the screening process and improves the reliability of particle screening. Secondly, for example, the sticking of fertilizer granules mostly occurs when the temperature has not decreased. Therefore, in order to prevent the granules from sticking again, a hot air blower is installed on the shell to blow hot, dry air for drying, which further improves the dispersion of the granules and thus improves the sorting effect. At the same time, drying by blowing air can remove the debris generated during the vibrating sieve process, thereby improving the purity of the sorted granules. Meanwhile, the vibrating screening belt in this solution is equipped with screening holes. Since the vibrating screening belt has a two-layer structure when working, it can achieve a secondary screening effect. Here, it can separate sticky particles. Therefore, the aperture of the screening holes on the vibrating screening belt is consistent. After the sticky particles are removed by the above structure, the particles enter the next layer of subdivision screening components. The subdivision screening components screen the product again according to the size of the particles to complete the multi-level screening work, thereby improving the consistency of the particles after screening. 2. In this invention, by controlling the rotation speed of the motor, the agricultural products after vibrating screening enter the lower position of the fine screening belt. Then, driven by the second motor, the fine screening belt moves upward, thereby driving the agricultural products upward. Due to the presence of an aperture adjustment component, the aperture of the upper part of the conveyor belt gradually increases as the conveyor belt moves. This results in smaller apertures near the lower end of the conveyor belt and larger apertures near the upper end. This allows smaller particles to pass through the apertures on the fine screening belt, while larger particles are carried upward with the movement of the fine screening belt and fall into the larger apertures at the upper end, thus completing the screening from small to large. Since the fine screening belt needs to be circulated, it will have two layers. Therefore, in this solution, an adjusting roller and a support roller are set in the lower layer to make the lower fine screening belt a wave shape with an upper peak and a lower concave structure. At the same time, by adjusting the aperture of the lower concave structure to the maximum position, the material entering the lower concave structure can be smoothly discharged through the outlet. 3. In this invention, rotating the adjusting column causes the movable plate to move, which in turn squeezes the medium inside the grouting seat, allowing the medium to enter the piston cylinders on both sides evenly, thereby causing the piston rod to move and thus moving the position of the adjusting plate. Since the grouting seat is simultaneously inside both piston cylinders, it can be adjusted at the same time, thus avoiding jamming and improving the accuracy of adjustment, thereby improving the accuracy of sorting. 4. In this invention, by setting the through hole and the process to a rectangular shape, the hole formed at the overlapping position remains rectangular even as their positions gradually change. This prevents irregular changes in hole diameter during the change process, thereby improving the controllability of sorting. At the same time, by setting chamfers on both sides of the through hole, when the sorting hole changes from a larger hole to a smaller one, the agricultural products inside the hole can be discharged to the upper and lower sides, avoiding jamming and improving the stability of equipment operation. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the first overall structure of the fertilizer dispensing device in this invention; Figure 2 This is a schematic diagram of the first overall structure of the screening structure in this invention; Figure 3 This is a schematic diagram of the second overall structure of the fertilizer dispensing device in this invention; Figure 4 This is a schematic diagram of the second overall structure for screening in this invention; Figure 5 This is a schematic diagram of the first internal structure of the fertilizer dispensing device in this invention; Figure 6 This is a schematic diagram of the first internal structure of the screening structure in this invention; Figure 7 This is a schematic diagram of the installation structure of the aperture adjustment component in this invention; Figure 8 This is a schematic diagram of the installation structure of the vibrating roller and the swing arm in this invention; Figure 9 This is a schematic diagram of the installation structure of the material feeding adjustment component in this invention; Figure 10 This is a schematic diagram of the collision strip in this invention; Figure 11 This is a schematic diagram of the first overall structure of the subdivision screening component in this invention; Figure 12 This is a schematic diagram of the second overall structure of the fine screening component in this invention; Figure 13 This is a schematic diagram of the sliding plate in this invention; Figure 14 This is a schematic diagram of the piston cylinder installation structure in this invention; Figure 15 This is a schematic diagram of the installation structure of the sliding plate at the concave structure in this invention; In the diagram: 1. Frame; 2. Shell; 3. Transmission roller; 4. Vibrating screening belt; 5. Motor No. 1; 6. Vibrating roller; 7. Swing arm; 8. Tension spring; 9. Protruding strip; 10. Hot air blower; 11. Drive roller; 12. Support roller; 13. Adjusting roller; 14. Subdividing screening belt; 15. Concave structure; 16. Motor No. 2; 17. Through hole; 18. Through hole; 19. Slide rail; 20. Sliding plate; 21. Mounting seat; 22. Power spring; 23. Adjusting plate; 24. Push plate; 25. Decorative cover; 26. Piston cylinder; 27. Piston rod; 28. Grouting seat; 29. ​​Movable plate; 30. Adjusting column; 31. Fixed seat; 32. Limiting card seat; 33. Limiting groove; 34. Reset spring; 35. Adjusting bolt; 36. Waist-shaped groove; 37. Collision strip; 38. Spherical protrusion; 39. Clamping tooth; 40. Tooth disc; 41. Chamfer; 42. Ball bearing; 43. Slide rail; 44. Slider; 45. Bag support frame. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] like Figure 2 , Figure 4 and Figure 5 As shown, an agricultural product dryer with a screening function includes a frame 1 and a shell 2, with the shell 2 fixedly installed on the upper part of the frame 1; the upper end of the shell 2 has a feeding inlet, and the lower end has several discharging outlets; it also includes... Two drive rollers 3 are installed inside the housing 2, and both ends of the drive rollers 3 are rotatably connected to the housing 2; a vibrating screening belt 4 is installed on the two drive rollers 3; a motor 5 is fixedly installed on the outside of the housing 2, and the output shaft of the motor 5 is fixedly connected to one of the drive rollers 3 to drive the vibrating screening belt 4 to transmit motion. A vibrating roller 6 is provided between the vibrating screening belt 4 and the vibrating roller 6; a swing arm 7 is rotatably connected to both ends of the vibrating roller 6; the end of the swing arm 7 away from the vibrating roller 6 is rotatably connected to the housing 2; a tension spring 8 is provided on the side of the swing arm 7 near the vibrating screening belt 4; one end of the tension spring 8 is connected to the swing arm 7, and the other end is hung on the housing 2 through a bracket; protrusions 9 are evenly spaced on the side of the vibrating screening belt 4 near the vibrating roller 6. The hot air blower 10 is used to dry the material to be screened. The hot air blower 10 is installed on one side of the housing 2, and the air inlet of the hot air blower 10 is located inside the vibrating screening belt 4. The subdivision screening component is used to perform secondary sorting on the materials to be sorted after vibration separation by the above-mentioned vibration screening belt 4.

[0030] In industrial production and daily life, there is often a need to screen products. Screening mainly falls into two categories: removing impurities from the product and grading the product according to its quality. Regardless of the type, the fundamental principle is to first find the distinguishing point between the product and the impurities and then use this as the basis for screening. For example, when screening granular products, the size of the particles is often used for differentiation. However, when screening granular objects with the potential for sticking, relying solely on particle size often fails to yield reliable screening results. For instance, in the fertilizer production process, granular fertilizer is at a certain temperature when it is first formed, and the surface is not completely dry. Therefore, during screening, granular fertilizer particles may stick together, leading to misjudgments when screening based on particle size. Therefore, in this solution, when screening granular products with partially sticky surfaces, the product is slowly fed into the housing 2 through the feed inlet. The operation of motor 5 drives the transmission roller 3 to rotate, which in turn drives the vibrating screening belt 4 to move. Since the lower part of the vibrating screening belt 4 is provided with a protrusion 9, when the protrusion 9 touches the vibrating roller 6 below it during its movement, the swing arm 7 will swing, causing the tension spring 8 to be pulled. When the protrusion 9 moves to the point of disengaging from the vibrating roller 6, the vibrating roller 6 will quickly impact the vibrating screening belt 4 under the action of the tension spring 8, thereby causing the particles on it to separate under the action of vibration, thus reducing the stickiness of particles during the screening process and improving the reliability of particle screening. Secondly, for example, the sticking of fertilizer granules mostly occurs when the temperature has not decreased. Therefore, in order to prevent the granules from sticking again, a hot air blower 10 for drying is installed on the shell 2 to blow out dry hot air for drying, which further improves the dispersion of the granules and thus improves the sorting effect. At the same time, drying by blowing air can remove the debris generated during the vibrating screening process, thereby improving the purity of the sorted granules.

[0031] Meanwhile, in this solution, the vibrating screening belt 4 is provided with screening holes. Since the vibrating screening belt 4 has a two-layer structure when working, it can achieve the effect of secondary screening. Here, it can separate sticky particles. Therefore, the aperture of the screening holes on the vibrating screening belt 4 is consistent. After the sticky particles are removed by the above structure, the particles enter the next layer of subdivision screening component. The subdivision screening component screens the product again according to the size of the particles to complete the multi-level screening work, thereby improving the consistency of the particles after screening.

[0032] like Figure 5 , Figure 7 and Figure 8 As shown, the subdivision screening component includes two drive rollers 11 rotatably mounted inside the housing 2, several support rollers 12 rotatably mounted inside the housing 2, and an adjustment roller 13 mounted inside the housing 2 via a material discharge adjustment assembly; the material discharge adjustment assembly is used to adjust the installation position of the adjustment roller 13. It also includes a fine screening belt 14, which is sequentially wrapped around the drive roller 11, the support roller 12 and the adjusting roller 13; the support roller 12 is located below the adjusting roller 13, so that the fine screening belt 14 forms a number of concave structures 15, which are located directly above the discharge port. A second motor 16 is installed on the outside of the housing 2. The output shaft of the second motor 16 is fixedly connected to one of the drive rollers 11. The drive roller 11 rotates to drive the fine screening belt 14 to transmit motion. The fine screening belt 14 is provided with through holes 17 evenly spaced, and the fine screening belt 14 is provided with slide rails 19 evenly spaced on the side; a sliding plate 20 is provided in the slide rail 19, and a through hole 18 is provided on the sliding plate 20; and aperture adjustment components for adjusting the relative position of the through hole 18 and the through hole 17 are provided at both ends of the sliding plate 20.

[0033] During operation, since both the vibrating screening belt 4 and the fine screening belt 14 are inclined, the agricultural products after vibrating screening enter the lower position of the fine screening belt 14 by controlling the speed of the motor. Then, driven by the second motor 16, the fine screening belt 14 is driven to move upward, thereby driving the agricultural products upward. Due to the presence of an aperture adjustment component, the aperture of the upper part of the conveyor belt gradually increases as the conveyor belt moves. This results in smaller apertures near the lower end of the inclined conveyor belt and larger apertures near the upper end. This allows smaller particles to pass through the apertures on the fine screening belt 14, while larger particles are carried upward with the movement of the fine screening belt 14 and fall into the larger apertures at the upper end, thus completing the screening from small to large. Meanwhile, since the subdivided screening belt 14 has a two-layer structure due to the need for cyclic transmission, in this solution, an adjusting roller 13 and a support roller 12 are set at the lower layer to make the lower subdivided screening belt 14 a wave shape with an upper peak and a lower concave structure 15; at the same time, by adjusting the aperture of the lower concave structure 15 to the maximum position, the material entering the lower concave structure 15 can be smoothly discharged through the outlet. When adjusting the aperture, the aperture adjustment component 18 is used to push the sliding plate 20 to move within the slide rail 19, thereby changing the relative position of the through hole 17 and the via hole 18. When the via hole 18 and the through hole 17 are completely overlapped, the screening aperture is at its maximum. When the via hole 18 and the through hole 17 are completely offset, the screening aperture is at its minimum.

[0034] like Figure 6 , Figure 7 and Figure 15 As shown, the aperture adjustment assembly includes a mounting base 21, which is disposed at one end of the sliding plate 20 and mounted on the housing 2; power springs 22 are evenly spaced on the side of the mounting base 21 near the sliding plate 20; one end of the power spring 22 is fixedly connected to the mounting base 21, and the other end of the power spring 22 is fixedly connected to a push plate 24; the push plate 24 abuts against the sliding plate 20. An adjustment plate 23 is provided at the other end of the sliding plate 20, and the adjustment plate 23 abuts against the sliding plate 20; the side of the adjustment plate 23 near the sliding plate 20 is set as an inclined surface, and the inclined surface gradually tilts towards the sliding plate 20 from bottom to top; an adjustment unit for horizontally moving the position of the adjustment plate 23 is provided on the side of the adjustment plate 23 away from the sliding plate 20.

[0035] During operation, a sliding plate 20 is installed in the slide 19 of the fine screening belt 14. At the lowest point a of the upper layer of the fine screening belt 14, relative to the highest point b of the upper layer, the sliding plate 20 at point a moves further towards the adjustment plate 23 under the action of the power spring 22. This causes a greater positional offset between the through hole 17 and the through hole 18, resulting in a smaller sorting aperture at point a. As the inclined surface tilts towards the sliding plate 20, the area of ​​overlap between the through hole and the through hole 18 increases as the position gets closer to point b, thereby increasing the sorting aperture and achieving aperture adjustment. Since the fine screening belt 14 is in motion, the use of the inclined surface and the sliding plate 20 and push plate 24 makes the structure of the aperture adjustment component simpler and more feasible.

[0036] like Figure 2 , Figure 6 and Figure 5 As shown, the adjustment unit includes a decorative cover 25, which is fixedly installed on one side of the housing 2; piston cylinders 26 are symmetrically installed inside the decorative cover 25; piston rod 27 is slidably connected inside the piston cylinder 26; and the side of the adjustment plate 23 away from the sliding plate 20 is fixedly connected to the piston rod 27. A grouting seat 28 is provided on the outer side of the decorative cover 25; the grouting seat 28 is connected to the interior of two piston cylinders 26 through a hose; a movable plate 29 is slidably connected inside the grouting seat 28, and an adjusting column 30 is rotatably connected to one side of the movable plate 29; the adjusting column 30 is threadedly connected to the grouting seat 28.

[0037] During operation, since the adjusting plate 23 has a certain length, it is best to move the adjusting plate 23 horizontally at the same time during adjustment. If it is moved on one side, it will cause the other side to get stuck. Moreover, adjusting on one side will also affect the other side, thus affecting the accuracy of adjustment. Therefore, in this solution, by rotating the adjusting column 30, the movable plate 29 will move, which will squeeze the medium inside the grouting seat 28, so that the medium enters the piston cylinders 26 on both sides evenly, thereby moving the piston rod 27 to move the position of the adjusting plate 23. Since the grouting seat 28 is simultaneously inside the two piston cylinders 26, it can be adjusted at the same time, thus avoiding jamming and improving the accuracy of adjustment, thereby improving the accuracy of sorting.

[0038] like Figure 6 and Figure 9As shown, the material feeding adjustment assembly includes a fixed base 31 and a limiting bracket 32; the fixed base 31 is fixedly connected to the housing 2; a limiting groove 33 is formed on the fixed base 31, and the limiting groove 33 is L-shaped; the limiting bracket 32 ​​is slidably connected in the limiting groove 33, and a return spring 34 is provided in the fixed base 31; one end of the return spring 34 is fixedly connected to the inner wall of the fixed base 31, and the other end abuts against the limiting bracket 32; an adjusting bolt 35 is threadedly connected to the fixed base 31; the end of the adjusting bolt 35 passes through the side wall of the fixed base 31 and abuts against the limiting bracket 32. The housing 2 has a waist-shaped groove 36, and the end of the adjusting roller 13 passes through the waist-shaped groove 36 and is installed in the fixed seat 31.

[0039] During installation, the adjusting roller 13 is inserted into the limiting seat 32, and then the limiting seat 32 is slid downwards along the opening of the limiting groove 33. After the limiting seat 32 is fully inserted into the limiting groove 33, the adjusting bolt 35 is rotated. Since the limiting groove 33 is L-shaped, the limiting seat 32 is restricted inside the fixed seat 31. Then, by rotating the adjusting bolt 35, the limiting seat 32 can be pushed to move inside the fixed seat 31. At the same time, since the adjusting roller 13 can pass through the waist-shaped groove 36 on the housing 2, the position of the adjusting roller 13 can be adjusted by rotating the adjusting bolt 35. By changing the position of the adjusting roller 13, the area of ​​the material receiving and screening on the upper part of each concave structure 15 can be changed. Since the aperture on the fine screening belt 14 gradually changes, the particle size range of the screened material can be changed with the change of the receiving area, thereby improving the controllability of screening.

[0040] like Figure 5 and Figure 10 As shown, several collision strips 37 are spaced apart inside the housing 2 above the vibrating screening belt 4; the collision strips 37 are fixedly connected to the housing 2; spherical protrusions 38 are provided below the collision strips 37; the spherical protrusions 38 are made of flexible material.

[0041] By setting a collision strip 37 above the vibrating screening belt 4 and a spherical protrusion 38 below the collision strip 37, the sticky agricultural products on the vibrating screening belt 4 collide with the spherical protrusion 38 on the collision strip 37 when they are vibrated and bounced up. This increases the vibration expansion efficiency of the particles, thereby improving the efficiency of separating the sticky agricultural products. At the same time, the spherical protrusion 38 is made of rubber, which can increase the elasticity after the collision and prevent the agricultural products from breaking, thereby improving the quality and cleanliness of the sorted material.

[0042] like Figure 11 and Figure 12As shown, the fine screening belt 14 is provided with evenly spaced teeth 39 at both ends on the side near the drive roller 11; the drive roller 11 is provided with toothed discs 40 at both ends; the fine screening belt 14 and the drive roller 11 are connected by meshing of the teeth 39 and the toothed discs 40.

[0043] Since the fine screening belt 14 is wound around a large number of rollers and has a large frictional resistance due to the adjustment components during movement, there is a risk of slippage. Therefore, in this solution, toothed 39 is set near both ends of the fine screening belt 14. The toothed 39 meshes with the toothed disc 40, thereby improving the reliability of the transmission between the two and ensuring the smooth screening process.

[0044] like Figure 12 and Figure 13 As shown, both through hole 17 and via hole 18 are rectangular holes, and their sidewalls in the width direction coincide; chamfers 41 are provided at the edges of both ends of via hole 18.

[0045] By setting the through hole 17 and the process to a rectangular shape, the hole formed at the overlapping position remains rectangular as their positions gradually change. This prevents irregular changes in hole diameter during the change process, thus improving the controllability of sorting. At the same time, by setting chamfers 41 on both sides of the through hole 18, when the sorting hole changes from a larger hole to a smaller one, the agricultural products inside the hole can be discharged to the upper and lower sides, avoiding jamming and improving the stability of equipment operation.

[0046] like Figure 14 and Figure 15 As shown, a groove is provided at one end of the sliding plate 20 near the adjusting plate 23, and a ball bearing 42 is connected in the groove, with the ball bearing 42 abutting against the adjusting plate 23.

[0047] By setting ball bearings 42 at one end of the sliding plate 20, the frictional relationship between the sliding plate 20 and the adjusting plate 23 can be changed to rolling friction. Since the relative positional relationship between the adjusting plate 23 and the sliding plate 20 directly affects the size of the aperture, the friction on the adjusting plate 23 can be reduced, thereby improving the sorting accuracy of the device after long-term use and thus improving the durability of the equipment.

[0048] like Figures 1-3 As shown, the agricultural product dryer also includes several slide rails 43 installed on the frame 1, the length of which is at least three times the length of the discharge port; a slider 44 is slidably connected to the slide rail 43; a bag support frame 45 is fixedly connected to the slider 44, and the bag support frame 45 can support at least two packaging bags side by side.

[0049] By installing a sliding support frame at the bottom of the screening structure, with the length of the support frame being more than three times that of the discharge port, when the packaging bags at one station are full during the packaging process, pushing the support frame will transfer the packaging bags from the next station above and below the discharge port. This achieves the reciprocating motion of the support frame, thereby saving downtime during packaging bag switching and improving packaging efficiency.

[0050] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. An agricultural product dryer with a screening function, comprising a frame (1) and a shell (2), wherein the shell (2) is fixedly installed on the upper part of the frame (1); the upper end of the shell (2) is provided with a feed inlet, and the lower end is provided with a plurality of discharge outlets; characterized in that: It also includes, Two drive rollers (3) are installed inside the housing (2), and the two ends of the drive rollers (3) are rotatably connected to the housing (2); a vibrating screening belt (4) is provided on the two drive rollers (3); a No. 1 motor (5) is fixedly installed on the outside of the housing (2), and the output shaft of the No. 1 motor (5) is fixedly connected to one of the drive rollers (3) to drive the vibrating screening belt (4) to transmit motion. Vibrating roller (6) is provided between the vibrating screening belts (4); swing arms (7) are rotatably connected to both ends of the vibrating roller (6); the end of the swing arm (7) away from the vibrating roller (6) is rotatably connected to the housing (2); a tension spring (8) is provided on the side of the swing arm (7) near the vibrating screening belt (4); one end of the tension spring (8) is connected to the swing arm (7), and the other end is hung on the housing (2) through a bracket; protrusions (9) are evenly spaced on the side of the vibrating screening belt (4) near the vibrating roller (6). A hot air blower (10) is used to dry the material to be screened. The hot air blower (10) is installed on one side of the housing (2), and the air inlet of the hot air blower (10) is located inside the vibrating screening belt (4). The subdivision screening component is used to perform secondary sorting on the material to be sorted after vibration separation by the above-mentioned vibration screening belt (4).

2. The agricultural product dryer with screening function according to claim 1, characterized in that: The subdivision and screening component includes two drive rollers (11) rotatably mounted inside the housing (2), a plurality of support rollers (12) rotatably mounted inside the housing (2), and an adjustment roller (13) mounted inside the housing (2) via a material discharge adjustment assembly; the material discharge adjustment assembly is used to adjust the installation position of the adjustment roller (13); It also includes a fine screening belt (14), which is sequentially wrapped around the drive roller (11), the support roller (12) and the adjusting roller (13); the support roller (12) is located below the adjusting roller (13), so that the fine screening belt (14) forms a plurality of concave structures (15), which are located directly above the discharge port; A second motor (16) is installed on the outside of the housing (2), and the output shaft of the second motor (16) is fixedly connected to one of the drive rollers (11); the drive roller (11) rotates to drive the subdivided screening belt (14) to transmit motion; The subdivided screening strip (14) is provided with through holes (17) at even intervals, and the side of the subdivided screening strip (14) is provided with slide rails (19) at even intervals; a sliding plate (20) is provided in the slide rail (19), and a through hole (18) is provided on the sliding plate (20); the two ends of the sliding plate (20) are provided with aperture adjustment components for adjusting the relative position of the through hole (18) and the through hole (17).

3. The agricultural product dryer with screening function according to claim 2, characterized in that: The aperture adjustment assembly includes a mounting base (21), which is disposed at one end of the sliding plate (20) and mounted on the housing (2); a power spring (22) is evenly spaced on the side of the mounting base (21) near the sliding plate (20); one end of the power spring (22) is fixedly connected to the mounting base (21), and the other end of the power spring (22) is fixedly connected to a push plate (24); the push plate (24) abuts against the sliding plate (20); An adjustment plate (23) is provided at the other end of the sliding plate (20) and abuts against the adjustment plate (23); the side of the adjustment plate (23) near the sliding plate (20) is provided as an inclined surface, and the inclined surface gradually tilts towards the side of the sliding plate (20) from bottom to top; an adjustment unit for horizontally moving the position of the adjustment plate (23) is provided on the side of the adjustment plate (23) away from the sliding plate (20).

4. The agricultural product dryer with screening function according to claim 3, characterized in that: The adjustment unit includes a decorative cover (25), which is fixedly installed on one side of the housing (2); piston cylinders (26) are symmetrically installed inside the decorative cover (25); a piston rod (27) is slidably connected inside the piston cylinder (26); and the side of the adjustment plate (23) away from the sliding plate (20) is fixedly connected to the piston rod (27). The decorative cover (25) is provided with a grouting seat (28) on its outer side; the grouting seat (28) is connected to the interior of the two piston cylinders (26) through a hose; a movable plate (29) is slidably connected inside the grouting seat (28), and an adjusting column (30) is rotatably connected to one side of the movable plate (29); the adjusting column (30) is threadedly connected to the grouting seat (28).

5. The agricultural product dryer with screening function according to claim 4, characterized in that: The material feeding adjustment assembly includes a fixed seat (31) and a limiting seat (32); the fixed seat (31) is fixedly connected to the housing (2); a limiting groove (33) is provided on the fixed seat (31), and the limiting groove (33) is L-shaped; the limiting seat (32) is slidably connected in the limiting groove (33), and a return spring (34) is provided in the fixed seat (31); one end of the return spring (34) is fixedly connected to the inner wall of the fixed seat (31), and the other end abuts against the limiting seat (32); an adjusting bolt (35) is threadedly connected to the fixed seat (31); the end of the adjusting bolt (35) passes through the side wall of the fixed seat (31) and abuts against the limiting seat (32); The housing (2) has a waist-shaped groove (36), and the end of the adjusting roller (13) passes through the waist-shaped groove (36) and is installed in the fixed seat (31).

6. The agricultural product dryer with screening function according to claim 5, characterized in that: Inside the housing (2), above the vibrating screening belt (4), there are several collision strips (37) spaced apart; the collision strips (37) are fixedly connected to the housing (2); a spherical protrusion (38) is provided below the collision strips (37); the spherical protrusion (38) is made of flexible material.

7. The agricultural product dryer with screening function according to claim 6, characterized in that: The fine screening belt (14) has evenly spaced teeth (39) at both ends near the drive roller (11); the drive roller (11) has toothed discs (40) at both ends; the fine screening belt (14) and the drive roller (11) are connected by the teeth (39) and the toothed discs (40).

8. The agricultural product dryer with screening function according to claim 7, characterized in that: Both the through hole (17) and the via hole (18) are rectangular holes, and their sidewalls in the width direction overlap; chamfers (41) are provided at the edges of both ends of the via hole (18).

9. An agricultural product dryer with a screening function according to claim 8, characterized in that: The sliding plate (20) has a groove at one end near the adjusting plate (23), and a ball (42) is connected in the groove. The ball (42) abuts against the adjusting plate (23).

10. An agricultural product dryer with a screening function according to claim 9, characterized in that: It also includes several slide rails (43) installed on the frame (1), the length of which is at least three times the length of the outlet; a slider (44) is slidably connected on the slide rail (43); a bag support frame (45) is fixedly connected on the slider (44), and the bag support frame (45) can support at least two packaging bags side by side.

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