Mesh belt conveying mechanism

Abstract

The invention relates to the field of agricultural product transportation, in particular to a mesh belt conveying mechanism. Comprising an advancing vibrating screen, a mesh belt elevator is obliquely arranged at the outlet end of the advancing vibrating screen, guide plates are arrayed at equal intervals at a conveying belt of the mesh belt elevator, and auxiliary racks fixedly connected with a rack are arranged on the two sides of the conveying belt; each material guide plate is provided with a flattening mechanism, each flattening mechanism comprises a rolling shaft which abuts against the corresponding material guide plate in a rolling mode, and the rolling shafts are sleeved with rubber sleeves which abut against the rubber sleeves in an interference mode; a reciprocating mechanism is arranged at the lower end of the guide plate, an extension frame is slidably arranged at the lower end of the guide plate, a rubber scraper is arranged above the extension frame, and air cylinders are obliquely arranged on the two sides of the extension frame. According to the device, the rolling shaft is driven by the reciprocating mechanism to reciprocate and rotate, materials are evenly spread in cooperation with the rubber scraper, the air cylinder synchronously sprays air to complete winnowing and auxiliary scattering, the problem of material accumulation in inclined conveying is effectively solved, manual intervention is not needed, the conveying efficiency and the product quality are improved, and the conveying requirements of different types of agricultural products are met.

Description

Technical Field

[0001] This invention relates to the field of agricultural product transportation, specifically to a mesh belt conveyor mechanism. Background Technology

[0002] In agricultural product processing production lines, mesh belt conveyors are widely used in lifting and conveying processes due to their simple structure and stable load-bearing capacity. However, due to their design limitations, their shortcomings are particularly prominent in inclined conveying scenarios, severely restricting production efficiency and product quality. The most critical issue is that agricultural products tend to cluster on the guide plates during inclined conveying, leading to a series of chain reactions. Because mesh belt conveyors are often set at inclination angles of 30° to 60° to meet lifting requirements, agricultural products tend to accumulate at the lower end of the guide plates under the influence of gravity, forming unevenly thick piles. This not only results in scattered material distribution but also often leads to a coexistence of local overload and local idleness. Overloaded areas can easily cause guide plate deformation and chain jamming, while idle areas result in wasted conveying capacity. This directly causes downstream sorting, cleaning, and packaging equipment to be unable to evenly handle the material, with some equipment frequently shutting down due to overload and others remaining idle, significantly reducing the overall production line's collaborative efficiency.

[0003] To alleviate these problems, current production methods largely rely on manual intervention, requiring operators to use hand-held rakes to flatten the agricultural products on the conveyor belt in real time. However, this method has significant drawbacks: Firstly, agricultural products vary greatly in size. Fine-toothed rakes are needed for small seeds, while wide-toothed, soft rakes are required for softer products such as berries. Frequent tool changes not only increase the operational process but also disrupt the continuity of the conveyor. Secondly, it is difficult to precisely control the operating force. Excessive force can directly damage berries and deform seeds, while insufficient force cannot break up stubborn piles, resulting in high loss and rework rates for manual flattening.

[0004] In addition, most agricultural products require simultaneous auxiliary cleaning during transportation to remove surface dust, debris, and other impurities. However, existing mesh belt conveyor mechanisms use chain-driven, circulating conveyor belts, while traditional air separation equipment is mostly designed with fixed air ducts, making it difficult to precisely match the dynamically circulating conveyor belt and achieve integrated operation. Therefore, existing mesh belt lifting mechanisms require operators to manually perform air separation using handheld air guns. This operation is not only inefficient, but the air gun pressure and spray angle are entirely controlled by experience, making precise air separation impossible. Some impurities remain unremoved, affecting product quality, while excessive air spraying may blow away small particles of agricultural products, causing losses. Furthermore, prolonged handheld use of the air gun can lead to arm strain for operators, increasing labor costs and safety hazards. Therefore, it is necessary to design a mesh belt conveyor mechanism to solve these problems. Summary of the Invention

[0005] Therefore, it is necessary to provide a mesh belt conveyor mechanism to address the problems of existing technologies.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] A mesh belt conveyor mechanism, comprising:

[0008] The traveling vibrating screen has a mesh belt elevator installed at an inclined outlet end. The conveyor belt of the mesh belt elevator is equipped with guide plates arranged at equal intervals. A secondary rack is installed on both sides of the conveyor belt and is fixedly connected to the frame of the mesh belt elevator.

[0009] Each guide plate is equipped with a leveling mechanism, which includes a roller that rolls against the surface of the guide plate, and a rubber sleeve that is interference-fitted against the guide plate.

[0010] The lower end of the guide plate is equipped with a reciprocating moving mechanism that drives the roller to reciprocate along the surface of the guide plate. The reciprocating moving mechanism is connected to the auxiliary rack and pinion drive.

[0011] An extension frame, which is fixed to the output end of the reciprocating moving mechanism, is slidably installed at the lower end of the guide plate. A rubber scraper is installed above the extension frame, and air cylinders for spraying gas are installed at an angle on both sides of the extension frame.

[0012] Furthermore, an inclined plate is hinged to the side of the traveling vibrating screen near the mesh belt elevator via a torsion spring. Two cylinders are installed at the lower end of the inclined plate. The two cylinders are fixedly connected to the frame of the traveling vibrating screen. Rollers are rotatably connected to the output ends of the two cylinders, and the rollers abut against the lower end of the inclined plate.

[0013] Furthermore, the reciprocating movement mechanism includes two auxiliary gears rotatably connected to the lower end of the guide plate. The two auxiliary gears mesh with two auxiliary racks respectively. A bidirectional lead screw is provided on the side of the two auxiliary gears that are close to each other. A slide is slidably connected to the lower end of the guide plate. The slide is connected to the bidirectional lead screw through a screw sleeve. The slide is fixedly connected to the extension frame.

[0014] Furthermore, a bevel gear frame is fixedly connected to the upper end of the extension frame. A main bevel gear is rotatably connected to one side of the bevel gear frame, and a secondary bevel gear is rotatably connected to the other side. The main bevel gear and the secondary bevel gear mesh with each other, and the secondary bevel gear is fixedly connected to the roller coaxially.

[0015] The bevel gear frame has a main gear fixedly connected to the main bevel gear on the side near the extension frame. The lower end of the guide plate is fixedly connected to the main rack, and the main gear meshes with the main rack.

[0016] Furthermore, the outer surface of the rubber sleeve is formed with grooves arranged at equal angles along the circumferential direction.

[0017] Furthermore, extension bases are fixedly connected to both sides of the extension frame, and extension arms are tunably connected to the extension bases. A cross frame is provided on the side where the upper ends of the two extension arms are close to each other. The two sides of the cross frame are fixedly connected to the two extension arms respectively, and a rubber scraper is provided in the middle of the cross frame.

[0018] The extension arm has a strip-shaped perforation formed in the middle, and two bolts are installed at the strip-shaped perforation. The bolts pass through the strip-shaped perforation and are fixed to the extension base.

[0019] Furthermore, a card seat is provided in the middle of the cross frame, and limit pins are arranged in an equally spaced array on both sides of the card seat. The upper end of the limit pin is fixed to the card seat, and the lower end is slidably connected to the cross frame.

[0020] A tension spring is fitted around the limiting pin. The upper end of the tension spring is fixed to the card seat, and the lower end is fixed to the cross frame.

[0021] Furthermore, a worm is coaxially fixed to the upper end of the main bevel gear, and a worm wheel is provided on the side of the worm that is rotatably connected to the extension arm. The worm and the worm wheel mesh with each other, and a reciprocating push-pull mechanism is provided on the side of the worm wheel. The worm wheel is drivenly connected to the input end of the reciprocating push-pull mechanism.

[0022] Furthermore, the reciprocating push-pull mechanism includes a turntable fixedly connected to the worm gear along the same axis. The turntable is the input end of the reciprocating push-pull mechanism. A limit wheel is rotatably connected to the side of the turntable away from the worm gear. A rocker arm is provided on the side of the turntable away from the worm gear. One end of the rocker arm is hinged to the extension arm. A strip hole is formed in the middle of the rocker arm. The limit wheel is tumbledly connected to the strip hole in the middle of the rocker arm.

[0023] The air cylinder is coaxially and dynamically sealed with a piston. The piston is coaxially fixed with a bracket. The end of the bracket away from the piston is rotatably connected to a positioning wheel. The positioning wheel is rolledly connected to the strip hole in the middle of the rocker arm. When the turntable rotates, it drives the piston to reciprocate along the axis of the air cylinder.

[0024] Furthermore, a main check valve is fixedly connected to the end of the air cylinder away from the rocker arm, and a nozzle is sleeved on the outside of the main check valve. The main check valve enables one-way flow of air from the inside of the air cylinder to the outside of the air cylinder.

[0025] A secondary check valve is fixedly connected to the side wall of the air cylinder, which enables one-way flow of air from the outside of the air cylinder to the inside of the air cylinder.

[0026] The beneficial effects of this invention compared to the prior art are:

[0027] Firstly, this device effectively solves the problem of localized clumping of agricultural products during inclined conveying. By combining the movement and rotation of the rollers with the elasticity of the rubber scrapers to flatten the material, the material is evenly distributed on the guide plate, avoiding the coexistence of localized overload and idleness. Downstream sorting, cleaning, and packaging equipment can evenly receive the material, reducing downtime and equipment idleness caused by overload, significantly improving the overall efficiency of the production line. It eliminates the need for manual flattening in real time, reducing operational intensity while ensuring continuous conveying.

[0028] Secondly, this device can adapt to the conveying needs of different types of agricultural products. By adjusting the height of the rubber scraper and utilizing the groove design of the rubber sleeve and the elastic avoidance structure, it can handle materials of different sizes and hardness, such as small seeds and soft berries, without the need for frequent tool changes. It can precisely control the leveling force, avoid material damage and rework caused by improper force during manual operation, greatly reduce product loss rate and rework rate, simplify the operation process, and improve production stability.

[0029] Thirdly, this device integrates conveying and air separation, with the air cylinder's jetting action and leveling action synchronized. Precise and continuous jetting is achieved through a one-way valve and piston structure, eliminating the need for manual hand-held air guns. This improves air separation efficiency, avoids problems such as impurity residue or material blown off due to experience-based operation, ensures product cleanliness, reduces the risk of arm strain for operators, lowers labor costs and safety hazards, and optimizes the production environment and operational safety. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0031] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0032] Figure 3 This is a half-sectional view of the embodiment;

[0033] Figure 4 yes Figure 3 Enlarged view of the structure at point B in the middle;

[0034] Figure 5 This is a three-dimensional structural diagram of the leveling mechanism in the embodiment;

[0035] Figure 6 This is a bottom view of the three-dimensional structure of the slide in the embodiment;

[0036] Figure 7 This is a three-dimensional structural diagram of the guide plate in the embodiment;

[0037] Figure 8 yes Figure 7 Enlarged view of the structure at point C;

[0038] Figure 9 This is a side view of the air cylinder, roller, and rubber scraper in the embodiment;

[0039] Figure 10 This is a half-sectional view of the air cylinder in the embodiment;

[0040] Figure 11 yes Figure 10 Enlarged view of the structure at point D.

[0041] The numbers on the map are:

[0042] 1. Traveling vibrating screen; 2. Cylinder; 3. Roller; 4. Inclined plate; 5. Mesh belt elevator; 6. Guide plate; 7. Secondary rack; 8. Leveling mechanism; 9. Main rack; 10. Main gear; 11. Bevel gear frame; 12. Main bevel gear; 13. Worm; 14. Worm wheel; 15. Reciprocating push-pull mechanism; 16. Turntable; 17. Limit wheel; 18. Rocker arm; 19. Support; 20. Piston; 21. Strip hole; 22. Air cylinder; 23. Main single... 24. Check valve; 25. Nozzle; 26. Auxiliary bevel gear; 27. Roller; 28. Rubber sleeve; 29. ​​Groove; 30. Reciprocating movement mechanism; 31. Auxiliary gear; 32. Two-way lead screw; 33. Slide table; 34. Extension frame; 35. Extension base; 36. Bolt; 37. Extension arm; 38. Strip perforation; 39. Cross frame; 40. Rubber scraper; 41. Card holder; 42. Limit pin; 43. Tension spring; 44. Positioning wheel. Detailed Implementation

[0043] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0044] refer to Figures 1 to 11 A mesh belt conveyor mechanism, comprising:

[0045] A horizontally positioned traveling vibrating screen 1 has a mesh belt elevator 5 installed at an inclined position at its outlet end. Guide plates 6 are arranged in an evenly spaced array along the conveyor belt of the mesh belt elevator 5. A secondary rack 7 is installed on both sides of the conveyor belt, and the secondary rack 7 is installed at an inclined position and is fixedly connected to the frame of the mesh belt elevator 5.

[0046] Each guide plate 6 is provided with a flattening mechanism 8. The flattening mechanism 8 includes a roller 27 that rolls against the surface of the guide plate 6. The roller 27 is fitted with a rubber sleeve 28 that is interference-fitted against the guide plate 6.

[0047] The lower end of the guide plate 6 is provided with a reciprocating moving mechanism 30 that drives the roller 27 to reciprocate along the surface of the guide plate 6. The reciprocating moving mechanism 30 is connected to the auxiliary rack 7 for transmission.

[0048] An extension frame 34, which is fixedly connected to the output end of the reciprocating moving mechanism 30, is slidably installed at the lower end of the guide plate 6. A rubber scraper 40 is installed above the extension frame 34 to smooth the agricultural products accumulated on the surface of the guide plate 6. Gas cylinders 22 for spraying gas are installed at an angle on both sides of the extension frame 34. When the extension frame 34 moves, the gas cylinders 22 spray gas to the agricultural products on the surface of the guide plate 6 to assist in smoothing the agricultural products.

[0049] When this device is in operation, after the agricultural products are placed on the screen of the traveling vibrating screen 1, the traveling vibrating screen 1 starts and drives the agricultural products to move towards the mesh belt elevator 5. When the agricultural products move to the lower end of the mesh belt elevator 5, the mesh belt elevator 5 starts and drives the agricultural products to move upward through the guide plate 6 until they move to the top. Finally, the agricultural products are collected and processed.

[0050] When the conveyor belt elevator 5 moves the agricultural products via the guide plate 6, in order to achieve uniform spreading of the agricultural products on the upper part of the guide plate 6, the leveling mechanism 8 is activated and drives the roller 27 to move along the long side of the guide plate 6. During this process, the reciprocating mechanism 30 enables the roller 27 to roll back and forth, and the rubber scraper 40 set above the extension frame 34 can ripple the upper part of the agricultural products, so that the agricultural products piled up on the upper part of the guide plate 6 can be dispersed, preventing the agricultural products from being unevenly distributed on the guide plate 6. In addition, the air cylinders 22 set on both sides of the extension frame 34 will spray air onto the agricultural products when the roller 27 moves. This can not only assist in cleaning the dust, dirt debris or impurities after screening attached to the surface of the agricultural products, but also assist in dispersing small seeds and berries and other easily aggregated agricultural products. At this time, the airflow provided by the air cylinders 22 can blow them to the unused areas of the guide plate 6, ensuring that the material evenly covers the guide plate 6 and avoiding excessive local pressure in downstream processes.

[0051] To ensure that agricultural products leave the traveling vibrating screen 1 only when the guide plate 6 moves to the side of the traveling vibrating screen 1 as they move from the traveling vibrating screen 1 to the lower end of the mesh belt elevator 5, the following features are specifically provided:

[0052] like Figure 4 As shown, the traveling vibrating screen 1 has an inclined plate 4 hinged to the side of the mesh belt elevator 5 by a torsion spring. Two cylinders 2 are installed at the lower end of the inclined plate 4. The two cylinders 2 are fixed to the frame of the traveling vibrating screen 1. The output ends of the two cylinders 2 are rotatably connected to rollers 3, and the rollers 3 abut against the lower end of the inclined plate 4.

[0053] During the cyclical movement of the guide plate 6 driven by the mesh belt elevator 5, the cylinder 2 can drive the roller 3 to move up and down, thereby adjusting the tilt angle of the inclined plate 4. When the guide plate 6 is about to move to the side of the traveling vibrating screen 1, the cylinder 2 pushes the roller 3 to lift the inclined plate 4, so that the inclined plate 4 is precisely aligned with the input end of the mesh belt elevator 5; when the guide plate 6 leaves, the cylinder 2 retracts, and the inclined plate 4 returns to its original position under the action of the torsion spring, preventing agricultural products from falling off the conveying path in advance, ensuring that the material is stably transferred to the guide plate 6, and preventing accumulation and scattering in the initial stage.

[0054] To supplement the specific structure of the reciprocating moving mechanism 30, the following features are also provided:

[0055] like Figure 5 and Figure 6 As shown, the reciprocating moving mechanism 30 includes two auxiliary gears 31 that are rotatably connected to the lower end of the guide plate 6. The two auxiliary gears 31 mesh with two auxiliary racks 7 respectively. A bidirectional lead screw 32 is provided on the side of the two auxiliary gears 31 that are close to each other. A slide table 33 is slidably connected to the lower end of the guide plate 6. The slide table 33 is connected to the bidirectional lead screw 32 through a threaded sleeve. The slide table 33 is fixedly connected to the extension frame 34.

[0056] When the mesh belt elevator 5 is running, the conveyor belt drives the guide plate 6 to move synchronously, and the auxiliary gear 31 continuously meshes with the auxiliary rack 7 fixed on the frame and rotates. When the auxiliary gear 31 rotates, it drives the bidirectional lead screw 32 to rotate synchronously. The bidirectional lead screw 32 drives the slide table 33 to move through the lead sleeve. The slide table 33 moves in a reciprocating linear motion along the guide structure at the lower end of the guide plate 6, which in turn drives the extension frame 34 and the roller 27 and rubber scraper 40 above to move synchronously back and forth. The synchronous linkage between the flattening mechanism 8 and the mesh belt conveyor can be achieved without an additional power source.

[0057] In order to enable the roller 27 to rotate as it moves from one end of the guide plate 6 to the other, the following features are specifically provided:

[0058] like Figure 6 and Figure 8 As shown, a bevel gear frame 11 is fixedly connected to the upper end of the extension frame 34. A main bevel gear 12 is rotatably connected to one side of the bevel gear frame 11, and a secondary bevel gear 26 is rotatably connected to the other side. The main bevel gear 12 and the secondary bevel gear 26 mesh with each other, and the secondary bevel gear 26 is coaxially fixedly connected to the roller 27.

[0059] The bevel gear 10, which is coaxially fixed to the main bevel gear 12, is rotatably mounted on the side of the bevel gear 11 near the extension frame 34. The lower end of the guide plate 6 is fixedly connected to the main rack 9, and the main gear 10 meshes with the main rack 9.

[0060] As the slide table 33 drives the extension frame 34 to reciprocate, the main gear 10 meshes with the main rack 9 fixed at the lower end of the guide plate 6. The main gear 10 rotates and drives the coaxial main bevel gear 12 to rotate. The main bevel gear 12 meshes with the secondary bevel gear 26 to transmit power to the roller 27, causing the roller 27 to rotate while reciprocating along the surface of the guide plate 6. When the roller 27 moves, it passes through the bottom of the agricultural product and can directly lift the bottom layer of material accumulated on the guide plate 6, breaking the compacted accumulation state of the material due to gravity. Compared with the method of scraping from the surface, this design of exerting force from below can reach deep clumps, allowing the material to be redistributed when it slides along the upper end of the roller 27 to the other side, completely avoiding the problem of false flattening with a flat surface but a clump of material at the bottom, and ensuring that the thickness of the material on the upper and lower layers of the guide plate 6 is uniform.

[0061] In addition, when agricultural products move along the upper end of roller 27, the contact method is rolling friction, and the friction force is much smaller than sliding friction. For easily damaged products such as berries and soft fruits and vegetables, it can reduce damage caused by squeezing and scratching; for small seeds, it can avoid surface wear or deformation, solving the problem of high material loss rate caused by traditional scraping and spreading.

[0062] To facilitate the movement of the rubber sleeve 28 and allow the agricultural products on the upper end of the guide plate 6 to be dispersed and flattened, the following features are specifically designed:

[0063] like Figure 8 As shown, the outer side of the rubber sleeve 28 has grooves 29 arranged in an equal angle along the circumferential direction.

[0064] The groove 29 reduces the contact area between the rubber sleeve 28 and the guide plate 6, lowering the frictional resistance during the reciprocating movement of the roller 27, making the mechanism run more smoothly and reducing energy consumption and component wear. Simultaneously, the rubber sleeve 28 itself is elastic, and the presence of the groove 29 allows for greater deformation space when the rubber sleeve 28 contacts the material, buffering the impact of the roller 27 on the material. This is especially beneficial for fragile items such as soft berries, preventing crushing damage caused by hard contact and further reducing material loss.

[0065] To facilitate adjustment of the specific position of the rubber scraper 40 and adapt to different types of agricultural products, the following features are also provided:

[0066] like Figure 7 and Figure 8 As shown, extension bases 35 are fixedly connected to both sides of the extension frame 34. Extension arms 37 are tunably connected to the extension bases 35. A cross frame 39 is provided on the side where the upper ends of the two extension arms 37 are close to each other. The two sides of the cross frame 39 are fixedly connected to the two extension arms 37. A rubber scraper 40 is provided in the middle of the cross frame 39.

[0067] The extension arm 37 has a strip-shaped perforation 38 formed in the middle. Two bolts 36 are provided at the strip-shaped perforation 38. After passing through the strip-shaped perforation 38, the bolts 36 are fixedly connected to the extension base 35.

[0068] After loosening bolt 36, the extension arm 37 can slide up and down along the strip-shaped perforation 38, allowing the operator to adjust the height of the crossbar 39 and the rubber scraper 40. When dealing with small seeds, the scraper height can be lowered to ensure full contact and dispersal; when dealing with larger or softer berries, the scraper height can be raised to avoid excessive compression. After adjustment, tighten bolt 36 to secure the extension arm 37. This allows for adaptation to agricultural products of different sizes and hardness without the need to change tools, simplifying the operation process.

[0069] To achieve an elastic connection between the rubber scraper 40 and the crossbeam 39, so that when the agricultural product is lifted by the roller 27, the rubber scraper 40 can avoid the agricultural product under elastic action, the following features are specifically provided:

[0070] like Figure 7 As shown, a card holder 41 is provided in the middle of the cross frame 39, and limit pins 42 are arranged in an equally spaced array on both sides of the card holder 41. The upper end of the limit pin 42 is fixedly connected to the card holder 41, and the lower end is slidably connected to the cross frame 39.

[0071] A tension spring 43 is sleeved on the outside of the limiting pin 42. The upper end of the tension spring 43 is fixedly connected to the card seat 41, and the lower end is fixedly connected to the cross frame 39.

[0072] The card holder 41 is slidably connected to the crossbeam 39 via a limiting pin 42. The tension spring 43 is always in a stretched state and provides downward elastic tension, keeping the rubber scraper 40 in close contact with the surface of the agricultural product. When encountering a thick accumulation of material or hard lumps, the agricultural product exerts an upward pushing force on the rubber scraper 40. The limiting pin 42 slides along the crossbeam 39, and the tension spring 43 is further stretched, achieving elastic avoidance of the rubber scraper 40. When the accumulation dissipates, the tension spring 43 resets, causing the scraper to return to its original position, ensuring a smoothing effect while preventing material damage.

[0073] In order to provide driving force to the air cylinder 22, the following features are also provided:

[0074] like Figure 5 and Figure 6 As shown, a worm gear 13 is coaxially fixed to the upper end of the main bevel gear 12. A worm wheel 14 is provided on the side of the worm gear 13 and is rotatably connected to the extension arm 37. The worm gear 13 and the worm wheel 14 mesh with each other. A reciprocating push-pull mechanism 15 is provided on the side of the worm wheel 14. The worm wheel 14 is connected to the input end of the reciprocating push-pull mechanism 15.

[0075] When the main bevel gear 12 rotates, the worm gear 13 coaxial with the main bevel gear 12 rotates synchronously and drives the meshing worm wheel 14 to rotate. The worm wheel 14 transmits the rotational power to the input end of the reciprocating push-pull mechanism 15, realizing the synchronous transmission of power from the leveling mechanism 8 to the air separation mechanism. This ensures that the air jet action of the air cylinder 22 and the leveling action of the roller 27 are precisely coordinated, eliminating the need for an additional independent power unit, simplifying the overall structure and reducing energy consumption.

[0076] In order to ensure that the air cylinder 22 can continuously spray air during the movement of the slide 33, the following features are specifically designed:

[0077] like Figure 5 and Figure 6 As shown, the reciprocating push-pull mechanism 15 includes a turntable 16 fixedly connected to the worm gear 14 along the same axis. The turntable 16 is the input end of the reciprocating push-pull mechanism 15. A limit wheel 17 is rotatably connected to the side of the turntable 16 away from the worm gear 14. A rocker arm 18 is provided on the side of the turntable 16 away from the worm gear 14. One end of the rocker arm 18 is hinged to the extension arm 37. A strip hole 21 is formed in the middle of the rocker arm 18. The limit wheel 17 is tumbledly connected to the strip hole 21 in the middle of the rocker arm 18.

[0078] The air cylinder 22 is coaxially and dynamically sealed with a piston 20. The piston 20 is coaxially and fixedly connected with a bracket 19. The end of the bracket 19 away from the piston 20 is rotatably connected to a positioning wheel 44. The positioning wheel 44 is rolledly connected to the strip hole 21 in the middle of the rocker arm 18. When the turntable 16 rotates, it drives the piston 20 to reciprocate along the axis of the air cylinder 22.

[0079] When the worm gear 14 drives the turntable 16 to rotate, the limiting wheel 17 on the turntable 16 rolls in the strip hole 21 in the middle of the rocker arm 18, driving the rocker arm 18 to reciprocate around the hinge point. When the rocker arm 18 swings, the positioning wheel 44 in the strip hole 21 drives the bracket 19 and the piston 20 to reciprocate along the axis of the air cylinder 22: when the piston 20 retracts, a negative pressure is formed inside the air cylinder 22; when the piston 20 moves forward, it compresses the internal gas to generate a high-pressure airflow, realizing the continuous jetting action of the air cylinder 22, and the jetting frequency is consistent with the reciprocating speed of the roller 27.

[0080] In order to achieve air intake and exhaust of the air cylinder 22, the following features are specifically designed:

[0081] like Figure 10 and Figure 11 As shown, a main one-way valve 23 is fixedly connected to the end of the air cylinder 22 away from the rocker arm 18. A nozzle 25 is sleeved on the outside of the main one-way valve 23. The main one-way valve 23 realizes the one-way flow of air from the inside of the air cylinder 22 to the outside of the air cylinder 22.

[0082] A secondary one-way valve 24 is fixedly connected to the side wall of the air cylinder 22, which enables one-way flow of air from the outside of the air cylinder 22 to the inside of the air cylinder 22.

[0083] When piston 20 retracts along the axis of cylinder 22 (i.e., when piston 20 moves closer to rocker arm 18), the internal air pressure of cylinder 22 decreases, the auxiliary one-way valve 24 opens, and external air enters cylinder 22 to replenish the air supply. When piston 20 advances and compresses the gas (i.e., when piston 20 moves away from rocker arm 18), the auxiliary one-way valve 24 closes, the main one-way valve 23 opens, and the high-pressure airflow is directed through nozzle 25 onto the surface of the agricultural products on the guide plate 6. The one-way flow design of the main one-way valve 23 and the auxiliary one-way valve 24 ensures stable airflow output, and the tilt angle of nozzle 25 allows the airflow to both cover the material surface and help disperse aggregated materials.

[0084] The detailed working principle of this device is as follows: This device uses the coordinated operation of a traveling vibrating screen 1 and a mesh belt elevator 5 as its core to achieve integrated operation of stable conveying, uniform spreading, and precise air separation of agricultural products. First, after the agricultural products are fed into the screen of the traveling vibrating screen 1, the screen vibration initially disperses the material and conveys it towards the mesh belt elevator 5. At this time, the conveyor belt of the mesh belt elevator 5 drives the guide plate 6 to move cyclically. The cylinder 2 on one side of the traveling vibrating screen 1 dynamically adjusts the angle of the inclined plate 4 according to the position of the guide plate 6, ensuring that when the guide plate 6 moves to the docking position, the agricultural products accurately fall onto the guide plate 6, avoiding initial scattering and accumulation.

[0085] As the guide plate 6 rises at an incline with the conveyor belt, the auxiliary gear 31 meshes with the auxiliary rack 7 on the frame, causing the bidirectional lead screw 32 to rotate. This causes the slide table 33 to reciprocate along the lower end of the guide plate 6, thereby driving the extension frame 34 to reciprocate synchronously. Simultaneously, as the slide table 33 moves, the main gear 10 meshes with the main rack 9 on the guide plate 6. Through the transmission of the main bevel gear 12 and the auxiliary bevel gear 26, the roller 27 rotates. The rubber sleeve 28 with grooves 29 on the outside of the roller 27, under the dual action of rotation and reciprocating movement, rolls and disperses the agricultural products on the guide plate 6, preventing the materials from accumulating at the lower end under gravity.

[0086] The rubber scraper 40 on the extension frame 34 is elastically attached by the tension spring 43. As it moves with the extension frame 34, it combs the surface of the material and elastically avoids thick piles, ensuring both flattening effect and preventing material damage. The height of the scraper can be adjusted by the strip perforation 38 to adapt to agricultural products of different volumes.

[0087] While the roller 27 rotates, the main bevel gear 12 drives the worm gear 13 to rotate, which in turn drives the worm wheel 14 and the turntable 16 to rotate. The turntable 16 drives the rocker arm 18 to swing back and forth through the limit wheel 17, which in turn pulls the piston 20 to reciprocate along the axis of the air cylinder 22. When the piston 20 moves backward, the auxiliary one-way valve 24 opens to replenish air, and when it moves forward, the main one-way valve 23 opens, spraying high-pressure airflow into the material through the nozzle 25. The airflow removes dust, debris and other impurities from the surface of agricultural products, achieving auxiliary cleaning; on the other hand, it helps to disperse easily aggregated small particles or soft materials, blowing them into the empty area of ​​the guide plate 6 to ensure uniform material coverage. Throughout the process, the leveling, air separation and mesh belt conveying are synchronized and linked, requiring no manual intervention. All power comes from the operation of the mesh belt elevator 5, realizing integrated operation and completely solving the problems of accumulation, loss and inefficient air separation in inclined conveying.

[0088] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A mesh belt conveyor mechanism, characterized by, The utility model relates to a kind of advancing vibrating screen (1), the outlet end of advancing vibrating screen (1) is obliquely provided with mesh belt elevator (5), the conveying belt of mesh belt elevator (5) is provided with guide plate (6) at equal interval array, the two sides of conveying belt are respectively provided with auxiliary rack (7), auxiliary rack (7) is fixedly connected with the rack of mesh belt elevator (5); Each guide plate (6) is respectively provided with flattening mechanism (8), flattening mechanism (8) includes the rolling resistance of the surface of guide plate (6) with rolling shaft (27), rolling shaft (27) is externally provided with the interference resistance of guide plate (6) with rubber sleeve (28); The lower end of guide plate (6) is provided with reciprocating movement mechanism (30) for driving rolling shaft (27) to reciprocate along the surface of guide plate (6), and reciprocating movement mechanism (30) is in transmission connection with auxiliary rack (7); The lower end of guide plate (6) is slidably provided with extension frame (34) fixedly connected with the output end of reciprocating movement mechanism (30), and rubber blade (40) is arranged above extension frame (34), and air cylinder (22) for spraying gas is arranged on the two oblique sides of extension frame (34). The side of advancing vibrating screen (1) close to mesh belt elevator (5) is hingedly connected with inclined plate (4) through torsion spring, the lower end of inclined plate (4) is provided with two air cylinders (2), the two air cylinders (2) are fixedly connected with the rack of advancing vibrating screen (1), the output end of the two air cylinders (2) is rotatably connected with roller (3), and roller (3) is in abutment with the lower end of inclined plate (4).

2. A net belt conveying mechanism according to claim 1, characterized in that Reciprocating movement mechanism (30) includes two auxiliary gears (31) rotatably connected with the lower end of guide plate (6), the two auxiliary gears (31) are respectively in meshing engagement with the two auxiliary racks (7), and the side close to the two auxiliary gears (31) is provided with bidirectional screw rod (32), the lower end of guide plate (6) is slidably connected with sliding table (33), sliding table (33) is in transmission connection with bidirectional screw rod (32) through screw sleeve, and sliding table (33) is fixedly connected with extension frame (34).

3. A net belt conveying mechanism according to claim 1, wherein The upper end of extension frame (34) is fixedly connected with bevel gear (11), one side of bevel gear (11) is rotatably connected with main bevel gear (12), the other side is rotatably connected with auxiliary bevel gear (26), main bevel gear (12) is in meshing engagement with auxiliary bevel gear (26), and auxiliary bevel gear (26) is coaxially fixedly connected with rolling shaft (27); 4. A net conveyor mechanism according to claim 3, wherein The side close to extension frame (34) of bevel gear (11) is rotatably provided with main gear (10) coaxially fixedly connected with main bevel gear (12), and the lower end of guide plate (6) is fixedly connected with main rack (9), and main gear (10) is in meshing engagement with main rack (9). The outer portion of rubber sleeve (28) is circumferentially formed with grooves (29) at equal angles.

5. A net conveyor mechanism according to claim 1, wherein The two sides of extension frame (34) are respectively fixedly connected with extension base (35), and extension arm (37) is adjustably connected with extension base (35), the side close to the upper end of the two extension arms (37) is provided with cross frame (39), the two sides of cross frame (39) are respectively fixedly connected with the two extension arms (37), and rubber blade (40) is arranged in the middle of cross frame (39) 6. A net conveyor mechanism according to claim 5, wherein ​ The middle of the extension arm (37) is formed with a strip-shaped through hole (38), and two bolts (36) are arranged at the strip-shaped through hole (38) and fixedly connected with the extension base (35) after penetrating through the strip-shaped through hole (38).

7. A net conveyor mechanism according to claim 6, wherein The middle of the cross frame (39) is provided with a clamping seat (41), and limit pins (42) are arranged at both sides of the clamping seat (41) at equal intervals, the upper end of the limit pin (42) is fixedly connected with the clamping seat (41), and the lower end is slidingly connected with the cross frame (39). The outer part of the limit pin (42) is sleeved with a tension spring (43), the upper end of the tension spring (43) is fixedly connected with the clamping seat (41), and the lower end is fixedly connected with the cross frame (39).

8. A net conveyor mechanism according to claim 1, wherein The upper end of the main umbrella tooth (12) is coaxially fixedly connected with a worm (13), a worm wheel (14) is arranged beside the worm (13) and rotationally connected with the extension arm (37), the worm (13) is engaged with the worm wheel (14), and a reciprocating push-pull mechanism (15) is arranged beside the worm wheel (14), and the worm wheel (14) is drivingly connected with the input end of the reciprocating push-pull mechanism (15).

9. A net belt conveying mechanism according to claim 8, wherein The reciprocating push-pull mechanism (15) comprises a rotating disc (16) fixedly connected with the worm wheel (14) in a coaxial manner, the rotating disc (16) is the input end of the reciprocating push-pull mechanism (15), the side, away from the worm wheel (14), of the rotating disc (16) is rotationally connected with a limit wheel (17), the side, away from the worm wheel (14), of the rotating disc (16) is provided with a rocker (18), one end of the rocker (18) is hingedly connected with the extension arm (37), the middle of the rocker (18) is formed with a strip-shaped hole (21), and the limit wheel (17) is rollingly connected with the strip-shaped hole (21) in the middle of the rocker (18). The piston (20) is coaxially movably connected with the air cylinder (22), the piston (20) is coaxially fixedly connected with a support (19), one end, away from the piston (20), of the support (19) is rotationally connected with a positioning wheel (44), the positioning wheel (44) is rollingly connected with the strip-shaped hole (21) in the middle of the rocker (18), and the rotating disc (16) drives the piston (20) to reciprocate along the axis direction of the air cylinder (22) when rotating.

10. A net belt conveying mechanism according to claim 9, wherein The side, away from the rocker (18), of the air cylinder (22) is fixedly connected with a main one-way valve (23), the outer part of the main one-way valve (23) is sleeved with a nozzle (25), and the main one-way valve (23) realizes one-way flow from the inside of the air cylinder (22) to the outside of the air cylinder (22). The side wall of the air cylinder (22) is fixedly connected with a secondary one-way valve (24), and the secondary one-way valve (24) realizes one-way flow from the outside of the air cylinder (22) to the inside of the air cylinder (22).

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