A vertical screw conveyor device for arranging materials by differential arrangement

Abstract

The present application belongs to the technical field of material conveying, and particularly relates to a vertical screw conveying device for arranging materials by differential speed, comprising: a barrel bottom, wherein an outer shell is arranged on the barrel bottom; a feeding port is arranged at the center of the top of the outer shell, and a discharging port is arranged at the side of the top of the outer shell; a sweeping assembly is arranged in the outer shell; a first-stage screw conveying mechanism and a second-stage screw conveying mechanism are sequentially arranged in the outer shell from bottom to top, and the end of the first-stage screw conveying mechanism is higher than the start of the second-stage screw conveying mechanism; and the transmission speed of the first-stage screw conveying mechanism is less than the transmission speed of the second-stage screw conveying mechanism. The problem of accumulation and jamming in the feeding area is solved by the sweeping assembly with an isolation wall and an elastic push piece, the problem of feeding fluctuation is solved by the two-stage differential conveying mechanism driven independently, and the problem of efficient conveying in a limited space is solved by the vertical layout and the high-low misalignment connection.

Description

Technical Field

[0001] This invention belongs to the field of material conveying technology, and specifically relates to a vertical screw conveyor device that utilizes differential speed to arrange materials. Background Technology

[0002] When materials are concentrated and fed into the feeding area from a high position, they are prone to accumulating or bridging at the starting end of the conveying mechanism. The lack of effective spatial isolation between the feeding area and the core working area of ​​the conveying system makes it easy for large pieces or clumps of materials to get stuck in the conveying components, causing blockages, sudden load changes, or even equipment damage, which seriously affects the stability of continuous operation.

[0003] When material accumulates at the bottom of the feed hopper, the instantaneous conveying capacity of a traditional single-drive conveying mechanism is limited in the initial stage, making it difficult to quickly and smoothly transform the accumulated bulk material into a continuous flow. This easily causes fluctuations in the material supply, making it impossible to provide a stable and controllable material flow for downstream processes, thus limiting the equipment's processing capacity and reusability.

[0004] Therefore, the prominent contradiction in current technology lies in how to design a conveying scheme within extremely limited floor space, especially by making full use of vertical space, so as to get rid of the dependence on long horizontal arrangement paths and achieve compact, efficient and stable composite conveying functions. Summary of the Invention

[0005] To address the aforementioned issues, this paper presents a vertical screw conveyor that utilizes differential speed material arrangement, thereby eliminating reliance on long horizontal arrangement paths and achieving compact, efficient, and stable composite conveying functions.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows.

[0007] A vertical screw conveyor for arranging materials using differential speed, characterized in that it comprises:

[0008] The bottom of the barrel is provided with an outer shell; the top center of the outer shell is provided with a material inlet, and the top side of the outer shell is provided with a material outlet;

[0009] The housing is equipped with a material sweeping assembly; the housing is equipped with a primary screw conveyor mechanism and a secondary screw conveyor mechanism arranged sequentially from bottom to top, with the end of the primary screw conveyor mechanism being higher than the beginning of the secondary screw conveyor mechanism; the transmission speed of the primary screw conveyor mechanism is less than the transmission speed of the secondary screw conveyor mechanism.

[0010] The sweeping assembly is used to transport the material at the bottom of the bucket to the primary screw conveyor mechanism. The material is then transported through both the primary and secondary screw conveyors. After reaching the end of the primary screw conveyor mechanism, the material naturally falls onto the secondary screw conveyor mechanism, which continues to transport it upwards until it is discharged from the outlet. The primary screw conveyor mechanism operates at a slower speed, while the secondary screw conveyor mechanism operates at a faster speed. When the material falls from the slower primary mechanism onto the faster secondary mechanism, the speed mismatch causes the material to be quickly separated, effectively solving the problem of material stacking and adhesion. This results in a single-layer, uniform distribution of material on the secondary screw conveyor mechanism.

[0011] Furthermore, the primary spiral conveying mechanism consists of a first limiting bracket, a first drive shaft, and a first conveyor belt; the first limiting bracket is installed inside the housing, and several first drive shafts are rotatably connected inside the first limiting bracket. All the first drive shafts are sleeved on the outside of the first conveyor belt, and the first conveyor belt is in contact with the bottom of the barrel.

[0012] The first limiting bracket forms the spiral track skeleton, and the first drive shaft drives the first conveyor belt to move along the spiral trajectory. Since the first conveyor belt is in contact with the bottom of the barrel, the material pushed by the sweeping component can be directly received by the conveyor belt and transported upward. In this way, the direct contact between the conveyor belt and the bottom of the barrel eliminates the dead angle of material transfer from the bottom of the barrel to the conveyor belt, and avoids material accumulation at the bottom.

[0013] Furthermore, the secondary screw conveyor mechanism consists of a second limiting bracket, a second drive shaft, and a second conveyor belt. The second limiting bracket is installed inside the housing, and several second drive shafts are rotatably connected within the second limiting bracket. A second conveyor belt is sleeved on the outer side of all the second drive shafts. The secondary screw conveyor mechanism operates on the same principle and structure as the primary screw conveyor mechanism, reducing manufacturing costs and maintenance difficulty.

[0014] Furthermore, a second drive motor is provided on the outer shell, and a first drive motor is provided on the bottom of the barrel. The second drive motor is connected to a second drive shaft, and the first drive motor is connected to a first drive shaft. The power sources of the two-stage conveying mechanism are independent of each other, driven by different motors, and can be started, stopped, or have their speeds adjusted independently, facilitating differential speed control.

[0015] Furthermore, a bag-breaking device is provided at the feed inlet to automatically break open the bags containing the material. The bag-breaking device is arranged below the feed inlet along the material's falling path, so that the bagged material is cut or torn open during the process of falling due to gravity.

[0016] Furthermore, an isolation wall is provided below the feed inlet to prevent the material from falling directly onto the screw conveyor during the descent process. Instead, the material is guided to the bottom of the barrel to reduce the risk of tumbling, accidental loading, and jamming caused by the falling material hitting the surface of the screw conveyor.

[0017] Furthermore, the bag-breaking device consists of a ring cutter, a gear, and a torque motor; the ring cutter is rotatably connected to the feed inlet, and a toothed ring is provided on the outer side of the ring cutter; the torque motor is provided on the feed inlet, and the output shaft of the torque motor is connected to a gear, which meshes with the toothed ring on the outer side of the ring cutter.

[0018] A torque motor drives a gear to rotate, which in turn rotates the toothed ring on the outside of the ring cutter. This causes the ring cutter to rotate in a circular motion at the inlet, cutting the packaging bag in a ring shape. One rotation of the ring cutter produces a clean ring cut, allowing the material inside the bag to flow out completely. The empty bag is less likely to break and scatter, making it easy to recycle. The gear and toothed ring meshing transmission ratio is stable, and the torque is high, effectively cutting through thicker packaging bags or sealing ropes.

[0019] Furthermore, the sweeping assembly consists of a bottom motor and a paddle. The bottom motor is located inside the bottom of the barrel, and the output shaft of the bottom motor is connected to the paddle. A rotating paddle mechanism driven by the bottom motor is provided. When rotating, the paddle forms a sweeping action on the bottom surface of the barrel, continuously sweeping the material scattered at the bottom of the barrel to the carrying area of ​​the primary screw conveyor mechanism.

[0020] Furthermore, the paddle is made of elastic material. When it encounters a hard object or entanglement during rotation, the paddle will undergo elastic deformation or swing back, temporarily bypassing the obstacle. After passing through, it will return to its original shape and continue sweeping. This allows it to swing back and make way when encountering local accumulation, bag entanglement, or large foreign objects, reducing jamming and overload.

[0021] Furthermore, the sweeping assembly also includes a guide plate located between the first conveyor belt and the bottom of the drum. The guide plate is added at the gap between the starting end of the first conveyor belt and the bottom of the drum. The material swept by the paddle first passes through the guide plate and then slides into the first conveyor belt, preventing material from getting stuck or leaking at the joint.

[0022] The beneficial effects of this invention are that it solves the problem of material accumulation and jamming in the feeding area through the isolation wall and the elastic paddle sweeping assembly; it solves the problem of material supply fluctuation through the independently driven two-stage differential speed conveying mechanism; and it solves the problem of efficient conveying within a limited space through the vertical layout and staggered connection. The synergistic effect of these three elements enables this vertical screw conveyor to achieve comprehensive technical effects of anti-clogging, stable material supply, and high efficiency in a compact structure, possessing significant market application value and technological advancement.

[0023] By setting the primary spiral conveyor to a slow speed and the secondary spiral conveyor to a fast speed, and utilizing the structure where the end of the primary conveyor is higher than the beginning of the secondary conveyor, the material is quickly spaced out as it falls from the slow primary conveyor to the fast secondary conveyor due to the speed mismatch. This differential speed arrangement mechanism effectively solves the problem of material stacking and adhesion, resulting in a single-layer, uniform distribution of material on the secondary spiral conveyor. This provides a high-quality material base for subsequent visual inspection, single-item sorting, or quantitative packaging processes.

[0024] The inlet is equipped with a bag-breaking device consisting of a ring cutter, gears, and a torque motor. The gears and rings mesh to drive the ring cutter in a circular motion, neatly cutting the packaging bags in a ring shape. This ensures the material inside flows out completely and the empty bags are less likely to break and scatter, facilitating recycling and reducing the risk of direct contact with dust or hazardous materials. Furthermore, an isolation wall below the inlet guides the material to the bottom discharge area rather than falling directly onto the screw conveyor, reducing the risk of material tumbling, accidental loading, and jamming from the source, further improving the stability of the equipment operation.

[0025] The sweeping assembly uses a bottom-mounted motor to drive a rotating, elastic paddle, creating a sweeping effect on the bottom of the drum and continuously pushing scattered materials to the primary conveyor belt. Simultaneously, the elastic paddle deforms or swings back when encountering hard or entangled objects, effectively reducing the risk of jamming and overload. A guide plate is positioned between the primary conveyor belt and the drum bottom to prevent material from getting stuck or leaking at the joint. The two-stage screw conveyor mechanism uses the same conveyor belt structure and independent motor drives, eliminating dead zones in the material transfer from the drum bottom to the conveyor belt, achieving active cleaning and forced feeding, reducing manufacturing costs and maintenance difficulty, and allowing for independent speed control for flexible differential adjustment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the outer casing of the present invention.

[0027] Figure 2 This is a top view of the present invention.

[0028] Figure 3 This is a structural cross-sectional view of the two-stage spiral conveying mechanism of the present invention.

[0029] Figure 4 This is a structural cross-sectional view of the primary screw conveyor mechanism of the present invention.

[0030] Figure 5 This is a partial structural cross-sectional view of the present invention.

[0031] Figure 6 This is a schematic diagram of the bottom motor and the lever of the present invention.

[0032] Figure label:

[0033] 1. Bottom of the bucket; 2. Outer shell; 3. Inlet; 4. Outlet;

[0034] 10. Primary screw conveyor mechanism; 20. Secondary screw conveyor mechanism;

[0035] 11. First limiting bracket; 12. First drive shaft; 13. First conveyor belt;

[0036] 21. Second limit bracket; 22. Second drive shaft; 23. Second conveyor belt;

[0037] 14. First drive motor; 24. Second drive motor;

[0038] 201. Circular cutter; 202. Gear; 203. Torque motor; 204. Partition wall;

[0039] 301. Bottom motor; 302. Paddle shifter; 303. Guide plate. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] See Figures 1-6 This embodiment provides a vertical screw conveyor device for arranging materials using differential speed, comprising:

[0042] The barrel has a bottom 1 and an outer shell 2. The top center of the outer shell 2 has a feed inlet 3 and the top side of the outer shell 2 has a discharge outlet 4.

[0043] A material sweeping assembly is provided inside the outer casing 2; a primary screw conveyor 10 and a secondary screw conveyor 20 are arranged sequentially from bottom to top inside the outer casing 2, and the end of the primary screw conveyor 10 is higher than the beginning of the secondary screw conveyor 20; the transmission speed of the primary screw conveyor 10 is less than the transmission speed of the secondary screw conveyor 20.

[0044] The sweeping assembly is used to transport the material on the bottom 1 of the bucket to the primary screw conveyor 10. The material is then transported to both the primary and secondary screw conveyors 10 and 20. After reaching the end of the primary screw conveyor 10, the material naturally falls onto the secondary screw conveyor 20, where it continues to be conveyed upwards until it is discharged from the outlet 4. The primary screw conveyor 10 operates at a slower speed, while the secondary screw conveyor 20 operates at a faster speed. When the material falls from the slower primary conveyor to the faster secondary conveyor, the speed mismatch causes the material to be quickly separated, effectively solving the problem of material stacking and adhesion. This results in a single-layer, uniformly distributed material on the secondary screw conveyor 20.

[0045] Furthermore, the first-stage spiral conveyor mechanism 10 is composed of a first limiting bracket 11, a first drive shaft 12, and a first conveyor belt 13; the first limiting bracket 11 is installed inside the outer shell 2, and several first drive shafts 12 are rotatably connected inside the first limiting bracket 11. The first conveyor belt 13 is sleeved on the outer side of all the first drive shafts 12, and the first conveyor belt 13 is in contact with the bottom of the barrel 1.

[0046] The first limiting bracket 11 forms a spiral track skeleton, and the first drive shaft 12 drives the first conveyor belt 13 to move along the spiral trajectory. Since the first conveyor belt 13 is in contact with the bottom of the barrel 1, the material pushed by the sweeping component can be directly received by the conveyor belt and transported upward. In this way, the direct contact between the conveyor belt and the bottom of the barrel 1 eliminates the dead angle of material transfer from the bottom of the barrel 1 to the conveyor belt, and avoids the accumulation of material at the bottom.

[0047] Furthermore, the secondary screw conveyor mechanism 20 consists of a second limiting bracket 21, a second drive shaft 22, and a second conveyor belt 23. The second limiting bracket 21 is installed inside the outer casing 2, and several second drive shafts 22 are rotatably connected within the second limiting bracket 21. All the second drive shafts 22 are collectively fitted with the second conveyor belt 23. The secondary screw conveyor mechanism 20 operates on the same principle and structure as the primary screw conveyor mechanism 10, reducing manufacturing costs and maintenance difficulty.

[0048] Furthermore, a second drive motor 24 is provided on the outer shell 2, and a first drive motor 14 is provided on the bottom of the barrel 1. The second drive motor 24 is connected to a second drive shaft 22, and the first drive motor 14 is connected to a first drive shaft 12. The power sources of the two-stage conveying mechanism are independent of each other and are driven by different motors. They can be started, stopped, or have their speeds adjusted independently, which facilitates differential speed control.

[0049] Furthermore, three bag-breaking devices are installed at the feed inlet to automatically break open the bags containing the material. These devices are positioned below the feed inlet along the material's descent path, allowing the bagged material to be cut or torn open as it falls under gravity.

[0050] Furthermore, an isolation wall 204 is provided below the feed inlet 3 to prevent the material from falling directly onto the screw conveyor during the falling process. Instead, the material is guided to the bottom of the barrel 1, reducing the risk of tumbling, accidental loading, and jamming caused by the falling material hitting the surface of the screw conveyor.

[0051] Furthermore, the bag breaking device consists of a ring cutter 201, a gear 202, and a torque motor 203; the ring cutter 201 is rotatably connected to the feed inlet 3, and a toothed ring is provided on the outer side of the ring cutter 201. The torque motor 203 is provided on the feed inlet 3, and the output shaft of the torque motor 203 is connected to the gear 202, and the gear 202 meshes with the toothed ring on the outer side of the ring cutter 201.

[0052] Torque motor 203 drives gear 202 to rotate. Gear 202, through meshing, drives the outer toothed ring of the ring cutter 201 to rotate, causing the ring cutter 201 to rotate circumferentially at the feed inlet 3, thus performing a ring cut on the packaging bag. One rotation of the ring cutter 201 achieves a neat ring cut, facilitating the complete outflow of material from the bag and preventing the empty bag from breaking and scattering, making it easy to recycle. The gear 202 has a stable gear-ring meshing transmission ratio and high torque, effectively cutting through thicker packaging bags or sealing ropes.

[0053] Furthermore, the sweeping assembly consists of a bottom motor 301 and a paddle 302. The bottom motor 301 is located inside the bottom of the barrel 1, and the output shaft of the bottom motor 301 is connected to the paddle 302. A rotating paddle 302 mechanism driven by the bottom motor 301 is provided. When rotating, the paddle 302 forms a sweeping action on the bottom of the barrel 1, continuously sweeping the material scattered on the bottom of the barrel 1 to the carrying area of ​​the primary screw conveyor mechanism 10.

[0054] Furthermore, the paddle 302 is made of elastic material. When the paddle 302 encounters a hard object or entanglement during rotation, it will undergo elastic deformation or swing back, temporarily bypassing the obstacle. After passing through, it will return to its original shape and continue sweeping. This allows it to swing back and make way when encountering local accumulation, bag entanglement, or large foreign objects, reducing jamming and overload.

[0055] Furthermore, the material sweeping assembly also includes a guide plate 303, which is located between the first conveyor belt 13 and the bottom of the drum 1. The guide plate 303 is added at the gap between the starting end of the first conveyor belt 13 and the bottom of the drum 1. The material swept by the paddle 302 first passes through the guide plate 303 and then slides into the first conveyor belt 13; this prevents the material from getting stuck or leaking at the joint.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vertical screw conveyor device for arranging materials using differential speed, characterized in that, include: The bottom of the barrel is provided with an outer shell; the top center of the outer shell is provided with a material inlet, and the top side of the outer shell is provided with a material outlet; The housing is equipped with a material sweeping assembly; the housing is equipped with a primary spiral conveyor mechanism and a secondary spiral conveyor mechanism arranged sequentially from bottom to top, with the end of the primary spiral conveyor mechanism being higher than the beginning of the secondary spiral conveyor mechanism; the transmission speed of the primary spiral conveyor mechanism is less than the transmission speed of the secondary spiral conveyor mechanism.

2. A vertical screw conveyor for arranging materials using differential speed according to claim 1, characterized in that, The primary spiral conveying mechanism consists of a first limiting bracket, a first drive shaft, and a first conveyor belt. The first limiting bracket is installed inside the outer shell, and several first drive shafts are rotatably connected inside the first limiting bracket. All the first drive shafts are sleeved with a first conveyor belt on their outer sides, and the first conveyor belt is in contact with the bottom of the barrel.

3. A vertical screw conveyor for arranging materials using differential speed according to claim 2, characterized in that, The secondary spiral conveying mechanism consists of a second limiting bracket, a second drive shaft, and a second conveyor belt. The second limiting bracket is installed inside the housing, and several second drive shafts are rotatably connected inside the second limiting bracket. All the second drive shafts are collectively sleeved with a second conveyor belt.

4. A vertical screw conveyor for arranging materials using differential speed according to claim 3, characterized in that, A second drive motor is provided on the outer shell, and a first drive motor is provided on the bottom of the barrel. The second drive motor is connected to a second drive shaft, and the first drive motor is connected to a first drive shaft.

5. A vertical screw conveyor for arranging materials using differential speed according to claim 1, characterized in that, A bag-breaking device is provided at the feed inlet to automatically break the bags of materials.

6. A vertical screw conveyor for arranging materials using differential speed according to claim 5, characterized in that, An isolation wall is provided below the feed inlet.

7. A vertical screw conveyor for arranging materials using differential speed according to claim 5, characterized in that, The bag-breaking device consists of a ring cutter, a gear, and a torque motor. The ring cutter is rotatably connected to the feed inlet, and a toothed ring is provided on the outside of the ring cutter. The torque motor is provided on the feed inlet, and the output shaft of the torque motor is connected to a gear, which meshes with the toothed ring on the outside of the ring cutter.

8. A vertical screw conveyor for arranging materials using differential speed according to claim 6, characterized in that, The sweeping assembly consists of a bottom motor and a paddle. The bottom motor is located inside the bottom of the barrel, and the output shaft of the bottom motor is connected to the paddle.

9. A vertical screw conveyor for arranging materials using differential speed according to claim 8, characterized in that, The paddle is made of a flexible material.

10. A vertical screw conveyor for arranging materials using differential speed according to claim 9, characterized in that, The sweeping assembly also includes a guide plate, which is located between the first conveyor belt and the bottom of the barrel.

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