Breakage-proof split type detachable feed spiral chute for stock bin

Abstract

The utility model relates to the technical field of material conveying equipment, and discloses an anti-breaking split type detachable stock bin feeding spiral chute which comprises a bin body, a feeding unit is arranged in the bin body, two L-shaped connecting bases are arranged below the feeding unit, the outer surface of each L-shaped connecting base is welded to the inner wall of the bin body, and the outer surface of each L-shaped connecting base is welded to the inner wall of the bin body. A transition unit is arranged below the feeding unit, a gradual change unit is arranged below the transition unit, the gradual change unit is connected with the bin body through an L-shaped connecting base, and a standard unit is arranged below the gradual change unit; due to the split type structural design, the U-shaped lining plate, the gradually-changed U-shaped lining plate and the L-shaped lining plate can be independently detached and are convenient to replace, in the whole use process of the chute, if a certain part is damaged, the plate can be directly and independently replaced, the whole chute does not need to be detached, the maintenance time is greatly shortened, the maintenance cost is reduced, and the service life of the chute is prolonged. Meanwhile, the service cycle is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of material conveying equipment technology, specifically a shatterproof, split-type, detachable hopper feeding spiral chute. Background Technology

[0002] In modern industrial production, the storage and transportation of materials are crucial links in the production process. As a key piece of equipment for storing materials, the feeding method and performance of the feeding device have a significant impact on the efficiency of the entire production system and the quality of materials. Spiral chutes, as a common type of silo feeding equipment, are widely used in industries such as coal, ore, and grain due to their relatively simple structure and efficient use of space. They guide materials to slide down slowly through a spiral structure, which, compared to the traditional straight-cylinder feeding method, can reduce the impact and breakage of materials to a certain extent and improve the quality of material transportation.

[0003] However, existing spiral chutes have revealed many problems in actual use. On the one hand, most traditional spiral chutes are one-piece structures. Once a part is worn or damaged, the entire chute often needs to be disassembled for repair or replacement. This not only consumes a lot of manpower, material resources and time, but also leads to production interruption and increases the company's operating costs. On the other hand, when conveying easily broken materials such as coal, the existing spiral chutes are still not ideal in preventing breakage. During the process of material falling from a height into the chute and sliding in the chute, due to the unreasonable design of the chute structure, the collision between the material and the inner wall of the chute is more frequent, resulting in a high material breakage rate and reducing the economic value of the material. In addition, when handling the conveying of materials with large drops (such as vertical drops of more than 20 meters), ordinary spiral chutes cannot guarantee the stable and efficient conveying of materials, and are prone to problems such as material blockage and uneven slippage, which affect the continuity and stability of production. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a split-type detachable feed spiral chute with anti-breakage design, which aims to solve the problems of high material breakage rate, inconvenient maintenance and replacement, short service life, and poor stability when conveying materials with large drops in traditional chutes.

[0005] A shatterproof, split-type, detachable feed spiral chute includes a hopper body. Inside the hopper body is a feeding unit. Below the feeding unit are two L-shaped connecting seats, the outer surface of which is welded to the inner wall of the hopper body. Below the feeding unit is a transition unit, and below the transition unit is a gradient unit. The gradient unit is connected to the hopper body via the L-shaped connecting seats. Below the gradient unit is a standard unit.

[0006] Preferably, the top of the hopper body is provided with three feeding hoppers located on the top of the L-shaped connecting seat. The feeding unit includes four first connecting flanges located outside the feeding hoppers. The outer surface of one feeding hopper is fixedly connected to the outer surface of two of the first connecting flanges. The outer surfaces of the other two feeding hoppers are respectively fixedly connected to the outer surfaces of the other two first connecting flanges. Four first fixing bolts are installed through the face-to-face contact point of each pair of first connecting flanges.

[0007] Preferably, the transition unit includes two U-shaped outer side plates respectively disposed opposite to each other at the bottom of the feed hopper at the tail of the feed unit. Each U-shaped outer side plate has a U-shaped liner inside. One end of each of the two U-shaped outer side plates is fixedly connected to the outer surface of the feed hopper at the tail of the corresponding feed unit. Each U-shaped outer side plate has six second connecting flanges on its outer side. The outer surface of each of the two U-shaped outer side plates is fixedly connected to the inner wall of two of the second connecting flanges. The inner walls of the other four second connecting flanges are fixedly connected to the outer surfaces of the other two U-shaped outer side plates. Each of the two U-shaped outer side plates has seven second fixing bolts on its outer side. The face-to-face contact points of the two second connecting flanges are connected by through-installation of the seven second fixing bolts. The inner angle between the first connecting flange and the second connecting flange is degrees.

[0008] Preferably, the gradient unit includes six gradient U-shaped connecting plates disposed below the last U-shaped outer plate in the transition unit. Each gradient U-shaped connecting plate has a gradient U-shaped inner liner plate inside. Two third connecting flanges are welded to the outer surface of each gradient U-shaped connecting plate. The two third connecting flanges are connected to the other two second connecting flanges at their face-to-face contact points by seven additional second fixing bolts. Furthermore, five additional third fixing bolts are jointly installed at the face-to-face contact points of every two third connecting flanges. The bottom surface of each U-shaped liner plate and the gradient... Four fourth fixing bolts are fixedly connected to the bottom surface of each U-shaped inner liner plate. Four first through holes are opened on the inner wall of each U-shaped outer plate and the inner wall of each gradient U-shaped connecting plate. The bottom end of each fourth fixing bolt passes through the first through hole and extends to the bottom of the first through hole. A first nut is threadedly connected to the outer surface of the bottom end of each fourth fixing bolt through the first through hole. The inner angle of the third connecting flange gradually changes from degrees to degrees as the spiral chute extends downward from top to bottom. The height of the inner side plate of the gradient U-shaped connecting plate and the gradient U-shaped inner liner plate gradually disappears from top to bottom, that is, it changes from U-shaped to L-shaped.

[0009] Preferably, the standard unit includes several L-shaped fixing plates disposed below two gradient U-shaped connecting plates at the end of the gradient unit. Each L-shaped fixing plate has an L-shaped inner liner plate inside. Four fifth fixing bolts are installed through and connected to the two side contact points of each L-shaped fixing plate. The two L-shaped fixing plates are connected to the last two third connecting flanges through and connected by seven additional third fixing bolts. Four sixth fixing bolts are fixedly connected to the outer surface of each L-shaped inner liner plate. Four second through holes are opened on the outer surface of each L-shaped fixing plate. One end of each sixth fixing bolt passes through the second through hole and extends to one side of the L-shaped fixing plate. A second nut is threaded onto the outer surface of each sixth fixing bolt. The inner angles of the L-shaped fixing plates and the L-shaped inner liner plates are both degrees.

[0010] Preferably, each of the L-shaped fixing plates is provided with an L-shaped connecting frame on its outer side, the vertical outer surface of each L-shaped connecting frame is welded to the inner wall of the silo body, a seventh fixing bolt is installed through the contact point between each L-shaped connecting frame and the surface of the silo body, the upper surface of the horizontal support of each L-shaped connecting frame is welded to the bottom outer surface of the flange splice of two adjacent L-shaped fixing plates, and the upper surface of the horizontal support of each L-shaped connecting seat is welded to the bottom surface of two adjacent third connecting flanges.

[0011] The beneficial effects of the above technical solution are as follows:

[0012] (1) This solution adopts a split structure design, and the U-shaped liner, the gradient U-shaped inner liner and the L-shaped inner liner can be disassembled separately for easy replacement. If a part is damaged during the overall use of the chute, the plate can be replaced directly without disassembling the whole chute, which greatly shortens the maintenance time, reduces the maintenance cost, and significantly increases the service life.

[0013] (2) This scheme utilizes the structure of the spiral chute and the spiral feeding structure of the gradual unit and the standard unit, so that during the downward movement of the material, part of the material will slide out of the chute, and the other part of the material will adhere to the inner side of the gradual U-shaped inner liner and the L-shaped inner liner from top to bottom along the rotational force, and finally slide out through the L-shaped inner liner. This design effectively disperses the impact force of the material, reduces the collision between materials, realizes the function of preventing the lump coal from breaking, and improves the quality of the material. The design of this chute also fully considers the situation of large drop conveying. Through reasonable structural layout and connection method, it can adapt to the material conveying needs of vertical drop of more than 20 meters, and ensure the stability and reliability of material conveying. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a top view of the structure of the container body of this utility model;

[0016] Figure 3 This is a structural schematic diagram of the U-shaped liner and the L-shaped inner liner of this utility model;

[0017] Figure 4 This is an enlarged structural schematic diagram showing some details of this utility model;

[0018] Figure 5 This is a front view structural diagram of the container body of this utility model;

[0019] Figure 6 This is a schematic diagram of the connection between the feed hopper and the gradient U-shaped inner liner of this utility model;

[0020] Figure 7 This is a schematic diagram of the disassembly of the U-shaped liner of this utility model;

[0021] Figure 8 This is a schematic diagram of the structure of the first nut of this utility model;

[0022] Figure 9 This is an exploded view of the L-shaped fixing plate of this utility model.

[0023] In the diagram: 1. Bin body; 2. Feed bin; 3. U-shaped liner; 4. Gradient U-shaped inner liner; 5. L-shaped connecting seat; 6. L-shaped inner liner; 7. Second nut; 8. First through hole; 9. Second through hole; 10. Fifth fixing bolt; 11. L-shaped connecting frame; 12. Seventh fixing bolt; 13. Gradient U-shaped connecting plate; 14. First connecting flange; 15. First fixing bolt; 16. L-shaped fixing plate; 17. U-shaped outer plate; 18. Second fixing bolt; 19. Fourth fixing bolt; 20. First nut; 21. Third fixing bolt; 22. Third connecting flange; 23. Second connecting flange; 24. Sixth fixing bolt. Detailed Implementation

[0024] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 9 As will be clearly shown in the detailed description of the embodiments, all structural contents mentioned in the following embodiments are based on the accompanying drawings.

[0025] Example 1: This example provides a breakage-resistant, split-type, detachable feed spiral chute for a hopper, such as... Figure 1-9As shown, the device includes a hopper body 1, inside which a feeding unit is provided. Below the feeding unit are two L-shaped connecting seats 5. The outer surface of each L-shaped connecting seat 5 is welded to the inner wall of the hopper body 1. Below the feeding unit is a transition unit, and below the transition unit is a gradient unit. The gradient unit is connected to the hopper body 1 through the L-shaped connecting seats 5. Below the gradient unit is a standard unit.

[0026] In this embodiment, the silo 1 provides the storage space and basic support for the entire device. The feeding unit, as the material inlet, is responsible for receiving the material. Since the feeding unit is fixed to the top of the silo by external steel cables, the external connecting equipment bears its weight and keeps it stable, so that the feeding unit is in a suitable position inside the silo 1, creating conditions for the material to enter the chute. The L-shaped connecting seat 5 mainly plays a positioning and partial support role at this time. It is fixed to the inner wall of the silo 1 and provides a connection point for the installation of the transition unit, ensuring that the relative position between the transition unit and the silo 1 is fixed, thus building a basic framework for the subsequent material conveying between the units. The transition unit is also lifted by the external connecting equipment to maintain its stable position below the feeding unit, ensuring that the material can smoothly transition from the feeding unit to the transition unit.

[0027] Example 2, based on Example 1, is improved in that, as follows: Figure 1-9 As shown, the top of the hopper body 1 is provided with three feeding hoppers 2 located on the top of the L-shaped connecting seat 5. The feeding unit includes four first connecting flanges 14 located on the outside of the feeding hopper 2. The outer surface of one feeding hopper 2 is fixedly connected to the outer surface of two of the first connecting flanges 14. The outer surfaces of the other two feeding hoppers 2 are fixedly connected to the outer surfaces of the other two first connecting flanges 14 respectively. Four first fixing bolts 15 are installed through the face-to-face contact point of each pair of first connecting flanges 14.

[0028] In this embodiment, the material enters from the outside into the feeding unit consisting of three feeding bins 2. The three feeding bins 2 are connected by a first connecting flange 14 and a first fixing bolt 15. The connection of each feeding bin 2 by the first fixing bolt 15 allows for easy disassembly and replacement. The feeding bins 2 are fixed to the top of the bin by external steel cables to maintain stability. The material slides out from the bottom opening of the feeding bin 2 under the action of gravity. Since the feeding bins 2 are firmly connected, the material will not leak or accumulate unevenly due to shaking. The outflowing material directly enters the transition unit below, which is suspended by the external steel cable connection equipment. The external connection equipment ensures that the transition unit stably receives the material.

[0029] Example 3, based on Example 2, is improved in that, as follows: Figure 1-9As shown, the transition unit includes two U-shaped outer side plates 17 respectively arranged opposite each other at the bottom of the feed hopper 2 at the tail of the feed unit. Each U-shaped outer side plate 17 is provided with a U-shaped liner 3 inside. One end of the two U-shaped outer side plates 17 is fixedly connected to the outer surface of the corresponding feed hopper 2 at the tail of the feed unit. Each U-shaped outer side plate 17 is provided with six second connecting flanges 23 on its outer side. The outer surface of the two U-shaped outer side plates 17 is fixedly connected to the inner wall of two of the second connecting flanges 23. The inner walls of the other four second connecting flanges 23 are fixedly connected to the outer surface of the other two U-shaped outer side plates 17 respectively. Each U-shaped outer side plate 17 is provided with seven second fixing bolts 18 on its outer side. The face-to-face contact of the two second connecting flanges 23 is connected by the seven second fixing bolts 18 through installation. The inner angle of the first connecting flange 14 and the second connecting flange 23 is 90 degrees.

[0030] In this embodiment, the material falling from the feed hopper 2 enters the transition unit. The U-shaped liner 3 and the U-shaped outer plate 17 of the transition unit are connected by the second connecting flange 23 and the second fixing bolt 18 to ensure stability. The U-shaped structure of the U-shaped liner 3 restricts the flow of material, causing it to slide down along a specific trajectory, reducing splashing and scattering. The U-shaped outer plate 17 provides support for the U-shaped liner 3 and enhances the overall stability. The second connecting flange 23 with an inner angle of 90 degrees ensures the accuracy and stability of the connection of the U-shaped outer plate 17. The transition unit is fixed to the top of the hopper by external steel cables to maintain stability when receiving materials. Under the guidance of the U-shaped liner 3, the material smoothly transitions to the transition unit, buffering and adjusting the speed and direction of the material, reducing the impact on the subsequent structure.

[0031] Example 4, based on Example 3, is improved in that, as follows: Figure 1-9As shown, the transition unit includes six transition U-shaped connecting plates 13 located below the last U-shaped outer plate 17 in the transition unit. Each transition U-shaped connecting plate 13 has a transition U-shaped inner liner plate 4 inside. Two third connecting flanges 22 are welded to the outer surface of each transition U-shaped connecting plate 13. The two third connecting flanges 22 are connected to the other two second connecting flanges 23 face-to-face by seven second fixing bolts 18 through installation. In addition, five third fixing bolts 21 are through installation at the face-to-face contact points of every two third connecting flanges 22. The bottom surface of each U-shaped liner plate 3 and the transition U-shaped inner liner plate 4 are connected to the transition unit. Four fourth fixing bolts 19 are fixedly connected to the bottom surface of plate 4. Four first through holes 8 are opened on the inner wall of each U-shaped outer plate 17 and the inner wall of the gradient U-shaped connecting plate 13. The bottom end of each fourth fixing bolt 19 passes through the first through hole 8 and extends to the bottom of the first through hole 8. The outer surface of the bottom end of each fourth fixing bolt 19 is threaded with a first nut 20 through the first through hole 8. The inner angle of the third connecting flange 22 gradually changes from 90 degrees to 110 degrees as the spiral chute extends downward from top to bottom. The height of the inner side plate of the gradient U-shaped connecting plate 13 and the gradient U-shaped inner liner plate 4 gradually disappears from top to bottom, that is, it changes from U-shaped to L-shaped.

[0032] In this embodiment, the material enters the transition unit from the transition unit. The transition U-shaped connecting plate 13 and the transition U-shaped inner liner plate 4 are connected by the fourth fixing bolt 19 and the first nut 20 to form a transition structure. As the material slides down, the height of the side plates of the transition U-shaped connecting plate 13 and the transition U-shaped inner liner plate 4 gradually decreases from top to bottom away from the vertical direction of the bin wall until they disappear, gradually changing from U-shaped to L-shaped. At the same time, the inner angle of the third connecting flange 22 gradually changes from 90 degrees to 110 degrees. This change causes some material to slide out of the chute, dispersing the impact force, while another part of the material adheres to the inner side and slides down. The gradual change of the inner angle of the third connecting flange 22 allows the material to gradually adapt to the change in the shape of the chute, adjust the direction and speed of movement, reduce collisions, and reduce the breakage rate. The L-shaped connecting seat 5 plays a supporting role at this time, bearing the weight of the transition unit and ensuring that the transition unit is stable in the bin 1, so that the material can be stably conveyed to the standard unit.

[0033] Example 5, based on Example 4, is improved in that, as follows: Figure 1-9As shown, the standard unit includes several L-shaped fixing plates 16 located below the two gradient U-shaped connecting plates 13 at the end of the gradient unit. Each L-shaped fixing plate 16 has an L-shaped inner liner plate 6 inside. Four fifth fixing bolts 10 are installed through the two side contact points of each L-shaped fixing plate 16. The two L-shaped fixing plates 16 are connected to the last two third connecting flanges 22 through the contact points of each other by seven additional third fixing bolts 21. Four sixth fixing bolts 24 are fixedly connected to the outer surface of each L-shaped inner liner plate 6. Four second through holes 9 are opened on the outer surface of each L-shaped fixing plate 16. One end of each sixth fixing bolt 24 passes through the second through hole 9 and extends to one side of the L-shaped fixing plate 16. A second nut 7 is threaded onto the outer surface of each sixth fixing bolt 24. The inner angles of the L-shaped fixing plate 16 and the L-shaped inner liner plate 6 are both 110 degrees.

[0034] In this embodiment, the material adjusted by the gradient unit enters the standard unit. The L-shaped fixing plate 16 and the L-shaped inner liner plate 6 are connected by the fifth fixing bolt 10, the sixth fixing bolt 24, the second nut 7, and the second through hole 9 to form a stable conveying channel. The L-shaped structure with an inner angle of 110 degrees is adapted to the gradient unit and can receive the material conveyed by the gradient unit. The L-shaped inner liner plate 6 provides a stable sliding surface for the material. The material continues to slide down its surface. Under the restriction and guidance of the L-shaped structure, the movement trajectory is more stable. Finally, the material slides out of the chute through the standard unit, completing the material conveying process and ensuring the accuracy and efficiency of the conveying. The weight of the standard unit is borne by the connection structure with the gradient unit, while maintaining stability in the entire system.

[0035] Example 6, based on Example 5, is improved in that, as follows: Figure 1-9 As shown, each L-shaped fixing plate 16 is provided with an L-shaped connecting frame 11 on its outer side. The vertical outer surface of each L-shaped connecting frame 11 is welded to the inner wall of the silo body 1. A seventh fixing bolt 12 is installed through the contact point between each L-shaped connecting frame 11 and the surface of the silo body 1. The upper surface of the horizontal support of each L-shaped connecting frame 11 is welded to the bottom outer surface of the flange splice of two adjacent L-shaped fixing plates 16. The upper surface of the horizontal support of each L-shaped connecting seat 5 is welded to the bottom surface of two adjacent third connecting flanges 22.

[0036] In this embodiment, the vertical outer surface of the L-shaped connecting frame 11 is welded to the inner wall of the silo 1 to enhance the connection strength between the standard unit and the silo 1. The upper surface of the horizontal support of the L-shaped connecting frame 11 is welded to the bottom outer surface of the flange splice of the L-shaped fixing plate 16 to firmly fix the standard unit in the silo 1, preventing the standard unit from shaking or shifting during material conveying. The upper surface of the L-shaped connecting seat 5 is welded to the bottom surface of the third connecting flange 22 to further enhance the connection stability between the gradient unit and the silo 1. Through the synergistic effect of the L-shaped connecting frame 11 and the L-shaped connecting seat 5, the entire material chute system is more firmly installed in the silo 1, and can withstand the impact and vibration generated by the conveying of materials with large drops, ensuring the safety and reliability of the material chute system in long-term operation.

[0037] Working Principle: During use, materials enter the feeding unit from the outside. The main function of the feeding unit is to initially buffer the materials. After the materials enter the feeding hopper 2, because the three feeding hoppers 2 are interconnected and firmly connected, the materials can be distributed relatively evenly among the feeding hoppers 2 under the action of gravity. After initial buffering in the feeding hopper 2, the materials fall into the transition unit under the action of gravity. The transition unit includes four U-shaped liners 3, four U-shaped outer plates 17, and six second connecting flanges 23. One end of the two U-shaped outer plates 17 is connected to the feeding hopper 2 at the end of the feeding unit, and they are connected by the second connecting flanges 23 and the second fixing bolts 18. The inner angles of the first connecting flange 14 and the second connecting flange 23 are both 90 degrees. The speed and impact of the materials falling from the feeding unit are controlled. When the force is relatively large, after entering the transition unit, the U-shaped structure formed by the U-shaped liner 3 and the U-shaped outer plate 17 begins to function. The U-shaped structure of the liner 3 restricts the flow range of the material, guiding it to slide down along a specific trajectory, reducing splashing and scattering. During the descent, the speed and direction of the material are initially adjusted, and the movement trajectory becomes more stable to adapt to subsequent conveying. Because the material sliding on the U-shaped liner 3 generates continuous friction, the inner wall of the U-shaped liner 3 gradually wears down over time. When the wear reaches a certain level, the surface of the U-shaped liner 3 is no longer smooth and flat, and the conveying of material in the transition unit becomes unstable, resulting in material scattering and accumulation, thus affecting conveying efficiency. At this point, only the U-shaped liner 3 needs to be replaced. (The text abruptly ends here, likely due to an incomplete sentence or missing information.) Unscrew the first nut 20 on the fourth fixing bolt 19 of the U-shaped liner 3, and remove the U-shaped liner 3 from the outer U-shaped plate 17. When installing the new U-shaped liner 3, align the fourth fixing bolt 19 on the new liner with the first through hole 8 of the outer U-shaped plate 17 and insert it, then tighten the first nut 20 to secure it. The outer U-shaped plate 17 and the second connecting flange 23 are located on the outside of the U-shaped liner 3 and are usually not severely worn due to material conveying, so they do not need to be replaced frequently. After the material is initially guided by the transition unit, it enters the gradient unit. The gradient unit consists of six gradient U-shaped connecting plates 13 and six gradient U-shaped inner liner plates 4. The gradient U-shaped connecting plates 13 are connected to the second connecting flange 23 of the transition unit through the third connecting flange 22, and simultaneously secured by the third fixing bolt 21. The material is reinforced with the adjacent third connecting flange 22. Both the U-shaped liner 3 and the gradient U-shaped inner liner 4 pass through the first through hole 8 via fourth fixing bolts 19. The outer surface of the fourth fixing bolts 19 is threaded to the inner ring of the first nut 20. The unique feature of the gradient unit is that the inner angle of the third connecting flange 22 gradually changes from 90 degrees to 110 degrees from top to bottom. The height of the side plates of the gradient U-shaped connecting plate 13 and the gradient U-shaped inner liner 4 gradually decreases from top to bottom away from the vertical direction away from the silo wall until they disappear, i.e., changing from a U-shape to an L-shape. After the material enters the gradient unit, as it slides down, the change in the height of the inner side plate of the gradient U-shaped inner liner 4 and the gradual change in the inner angle of the third connecting flange 22 cause some material to slide out of the chute due to the decrease in the height of the inner side plate, thus changing its trajectory.The concentrated impact force of the dispersed material is dispersed; another part of the material continues to slide down along the inner side of the gradient unit due to the rotational force. During this process, the movement trajectory and speed of the material are further adjusted, gradually adapting to the change in the shape of the chute, effectively reducing collisions between materials and between materials and the inner wall of the chute, and reducing the breakage rate of the material. However, due to the friction between the material and the gradient U-shaped inner liner 4 and the collisions between materials, the gradient U-shaped inner liner 4 will gradually wear. When the gradient U-shaped inner liner 4 wears to a certain extent, the accuracy of its gradient structure is affected, and it cannot effectively guide the material, which may increase the breakage rate of the material. At this time, it is only necessary to replace the gradient U-shaped inner liner 4. When replacing, unscrew the first nut 20 and remove the gradient U-shaped inner liner 4 from the gradient U-shaped connecting plate 1. 3. When removing the upper plate and installing the new plate, insert the fourth fixing bolt 19 of the new gradient U-shaped inner liner plate 4 into the corresponding first through hole 8, and then tighten the first nut 20 to fix it. The gradient U-shaped connecting plate 13 and the third connecting flange 22 are both located on the outside of the gradient U-shaped inner liner plate 4 and do not directly contact the material. Under normal circumstances, they will not be damaged by material conveying. After that, the material enters the standard unit. The standard unit consists of several L-shaped inner liner plates 6 and L-shaped fixing plates 16. The L-shaped fixing plate 16 is connected to the third connecting flange 22 of the gradient unit through the third fixing bolt 21. The L-shaped inner liner plate 6 is installed on the L-shaped fixing plate 16 through the sixth fixing bolt 24, the second nut 7 and the second through hole 9. The inner angles of the L-shaped fixing plate 16 and the L-shaped inner liner plate 6 are both 110 degrees. After the material is adjusted by the variable unit, it enters the standard unit. Guided by the L-shaped structure with a 110-degree inner angle, the material slides continuously on the L-shaped inner liner plate 6, resulting in a more stable trajectory. The material continues to slide down the stable track and eventually exits the chute through the standard unit, completing the material conveying process. However, the friction generated by the continuous sliding of the material on the L-shaped inner liner plate 6 will cause wear on the surface of the L-shaped inner liner plate 6. When the L-shaped inner liner plate 6 is severely worn, it cannot provide a stable conveying track for the material. When the material slides out of the chute, it may experience problems such as deviation and unstable speed, affecting the subsequent collection and processing of the material. In this case, it is only necessary to replace the L-shaped inner liner plate 6. When replacing it, unscrew the second nut 7, remove the L-shaped inner liner plate 6 from the L-shaped fixing plate 16, install the new plate, and screw on the second nut 7. The cap 7 can be fixed. The L-shaped fixing plate 16 is directly fixed to the silo body 1 through the L-shaped connecting frame 11. It usually does not wear out due to material conveying and does not need to be replaced. The silo body 1 is stably connected to each unit of the chute through the L-shaped connecting seat 5 and the L-shaped connecting frame 11. The upper surface of the horizontal support of the L-shaped connecting seat 5 is welded to the bottom surface of two adjacent third connecting flanges 22. The L-shaped connecting frame 11 is directly welded to the inner wall of the silo body 1 and further reinforced by the seventh fixing bolt 12. The upper surface of the horizontal support of the L-shaped connecting frame 11 is welded to the bottom outer surface of the flange splice joint of two adjacent L-shaped fixing plates 16. The feed silo 2, the U-shaped outer side plate 17 and the gradient U-shaped connecting plate 13 are all fixed to the top of the silo by external steel cables.These connecting structures, once installed, are very stable and will not wear out during normal material conveying, requiring no replacement. They ensure the stability of the chute system within the silo 1, withstand the impact and vibration of conveying materials with large drops, meet conveying requirements, and prevent material breakage.

[0038] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A breakage-proof split type detachable feed screw of a feed chute of a bin, comprising a bin body (1), characterized in that: The inside of the bin body (1) is provided with a feeding unit, the lower part of the feeding unit is provided with two L-shaped connecting seats (5), the outer surface of each L-shaped connecting seat (5) is welded with the inner wall of the bin body (1), the lower part of the feeding unit is provided with a transition unit, the lower part of the transition unit is provided with a gradual change unit, the gradual change unit is connected with the bin body (1) through the L-shaped connecting seat (5), and the lower part of the gradual change unit is provided with a standard unit.

2. The breakage-proof split type detachable feed screw conveyor for a bin according to claim 1, characterized in that: The top of the bin body (1) is provided with three feeding bins (2) located at the top of the L-shaped connecting seat (5), the feeding unit comprises four first connecting flanges (14) located outside the feeding bin (2), the outer surface of one of the feeding bins (2) is fixedly connected with the outer surface of two of the first connecting flanges (14), and the outer surface of the other two feeding bins (2) is fixedly connected with the outer surface of the other two first connecting flanges (14). Each of the first connecting flanges (14) is provided with four first fixing bolts (15) which are installed and connected through the face-to-face contact.

3. A breakage-proof split type detachable feed screw conveyor for a bin according to claim 2, characterized in that: The transition unit comprises two U-shaped outer side plates (17) which are oppositely arranged at the bottom of the feeding bin (2) at the tail of the feeding unit, the inside of each U-shaped outer side plate (17) is provided with a U-shaped lining plate (3), one end of the two U-shaped outer side plates (17) is fixedly connected with the outer surface of the feeding bin (2) at the tail of the corresponding feeding unit, the outer side of each U-shaped outer side plate (17) is provided with six second connecting flanges (23), the outer surface of the two U-shaped outer side plates (17) is fixedly connected with the inner wall of two of the second connecting flanges (23), the inner wall of the other four second connecting flanges (23) is fixedly connected with the outer surface of the other two U-shaped outer side plates (17), the outer side of the two U-shaped outer side plates (17) is provided with seven second fixing bolts (18), the face-to-face contact of the two second connecting flanges (23) is connected by penetratingly installing seven second fixing bolts (18), and the inner angle of the first connecting flange (14) and the second connecting flange (23) is 90 degrees.

4. The breakage-proof split type detachable feed screw conveyor for a bin according to claim 3, characterized in that: The gradual change unit includes six gradual change U-shaped connecting plates (13) arranged below the last U-shaped outer side plate (17) in the transition unit, the inside of each of the gradual change U-shaped connecting plates (13) is provided with a gradual change U-shaped inner lining plate (4), the outer surface of each of the gradual change U-shaped connecting plates (13) is welded with two third connecting flanges (22), the two third connecting flanges (22) and the other two second connecting flanges (23) are connected through the penetration of the other seven second fixing bolts (18), and the other two third connecting flanges (22) are jointly penetrated and arranged with the five third fixing bolts (21). The bottom surface of each of the U-shaped lining plates (3) and the bottom surface of the gradual change U-shaped inner lining plate (4) are fixedly connected with the four fourth fixing bolts (19), the inner wall of each of the U-shaped outer side plates (17) and the inner wall of the gradual change U-shaped connecting plate (13) are provided with the four first through holes (8), the bottom end of each of the fourth fixing bolts (19) penetrates the first through hole (8) and extends below the first through hole (8), the outer surface of the bottom end of each of the fourth fixing bolts (19) is threadedly connected with the first nut (20) through the first through hole (8), the inner angle of the third connecting flange (22) gradually changes from 90 degrees to 110 degrees from top to bottom along with the downward extension of the spiral chute, and the gradual change U-shaped connecting plate (13) and the gradual change U-shaped inner lining plate (4) gradually disappear from top to bottom on the inner side plate, that is, change from a U-shaped plate to an L-shaped plate.

5. A breakage-proof split type detachable feed screw conveyor for a bin according to claim 4, characterized in that: The standard unit includes a plurality of L-shaped fixed plates (16) arranged below the two gradual change U-shaped connecting plates (13) at the end of the gradual change unit, the inside of each of the L-shaped fixed plates (16) is provided with an L-shaped inner lining plate (6), the two side surfaces of each of the L-shaped fixed plates (16) are penetrated and connected with the four fifth fixing bolts (10), the two L-shaped fixed plates (16) and the last two third connecting flanges (22) are connected through the penetration of the other seven third fixing bolts (21), the outer surface of each of the L-shaped inner lining plates (6) is fixedly connected with the four sixth fixing bolts (24), the outer surface of each of the L-shaped fixed plates (16) is provided with the four second through holes (9), one end of each of the sixth fixing bolts (24) penetrates the second through hole (9) and extends to one side of the L-shaped fixed plate (16), and the outer surface of each of the sixth fixing bolts (24) is threadedly connected with the second nut (7). The inner angle of the L-shaped fixed plate (16) and the L-shaped inner lining plate (6) is 110 degrees.

6. A breakage-proof split type detachable feed screw conveyor for a bin according to claim 5, characterized in that: The outer side of each L-shaped fixed plate (16) is provided with an L-shaped connecting frame (11), the vertical outer surface of each L-shaped connecting frame (11) is welded with the inner wall of the bin body (1), the seventh fixed bolt (12) is installed and connected at the face-to-face contact position of each L-shaped connecting frame (11) and the bin body (1), the bottom outer surface of the upper surface of the horizontal support of each L-shaped connecting frame (11) is welded with the flange splice fitting position of two adjacent L-shaped fixed plates (16), and the upper surface of the horizontal support of each L-shaped connecting seat (5) is welded with the bottom surface of two adjacent third connecting flanges (22).

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