Spiral guide type grain feeding multi-point distribution device

Abstract

The utility model discloses a spiral flow guide type grain feeding multi-point distribution device relates to the field of large and medium-sized grain depot, which is characterized by the following: a spiral flow guide assembly is arranged in the center of the inner cavity of the grain storage silo and is connected to the feeding port at the top of the silo and the discharging port at the bottom of the silo. The spiral flow guide assembly interferes with and guides the free-fall process of the grain entering the silo, so that a part of the grain bounces off the rebound assembly due to collision and then pops out through multiple discharge windows and scatters in different positions in the silo, forming a multi-point uniform distribution of the feeding. This solves the problem of natural classification, improves the effective storage capacity and the efficiency of entering the silo. Another part of the grain continues to fall and then passes through multiple rebound assemblies multiple times for speed buffering before falling along the spiral trajectory in a slow and step-by-step manner. This greatly reduces the impact between particles, effectively reduces grain damage, reduces the generation of broken powder, avoids the filling of powder between grain particles, and affects the subsequent ventilation, air exchange and insecticidal effect of grain storage, avoids mold and insect growth, and improves the quality of grain storage.

Description

Technical Field

[0001] This utility model relates to the technical field of grain storage and warehousing in large and medium-sized grain warehouses, and more specifically to a spiral flow-guided multi-point distribution device for grain feeding. Background Technology

[0002] Currently, in my country, grain storage is mostly done using automated lifting and conveying systems to unload grain from the top of the storage silos. Traditional grain storage methods have the following shortcomings: 1. In traditional grain storage, grain undergoes free fall to form a conical pile, resulting in natural grading due to the different particle sizes that aggregate in different zones. Grain entering the storage silo from the top naturally accumulates from bottom to top under free fall, forming a larger cone with a naturally angled profile at the top. The angle varies depending on the grain particle size, typically between 25° and 35°. In other words, during the process of forming the conical pile, larger grains naturally aggregate due to differences in particle size, resulting in grading. Larger grains tend to fall to the outer edge of the storage silo, while smaller grains accumulate in the central area.

[0003] 2. Traditional grain storage causes breakage or even powdering due to collisions between grain particles during storage. When grain is naturally fed into the warehouse from the top, it will severely impact the grain already in the warehouse below, causing the grain particles to collide with each other and breakage or even produce a certain amount of powder.

[0004] 3. When grain particles collide with each other, they break and produce powder that fills the spaces between the grain particles. This can affect the subsequent ventilation, air exchange, and pest control of stored grains. This is especially true for small-diameter grain areas in the natural grain partitioning, which can even affect the preservation of the material and greatly increase the likelihood of mold and insect infestation in the small-diameter grain areas.

[0005] 4. As grain is naturally unloaded, it forms a large cone with a decorative angle in the upper middle part of the material. The large cone-shaped grain pile directly affects the effective storage volume of the grain warehouse.

[0006] 5. Currently, most grain storage discharges are done through one or more discharge ports set at the bottom of the silo. If the material in the silo is not evenly distributed in particle size but has severe natural gradation, or if the grain has broken or powdered particles, then when the grain leaves the silo and enters the production and processing stage, it will directly affect the quality of the subsequent grain products and reduce the selling price of the grain. Summary of the Invention

[0007] This invention addresses the shortcomings of existing technologies by providing a spiral-guided multi-point grain feeding distribution device. This device allows a portion of the grain, upon impact with the rebound components during its descent, to bounce out through multiple discharge windows and scatter at different locations within the grain storage silo, creating a uniform multi-point feeding distribution. This solves the problem of natural grading caused by grain particles of different sizes forming a conical pile during traditional grain storage, significantly increasing effective storage volume and silo loading efficiency. Furthermore, this invention allows another portion of the falling grain to be buffered multiple times by the upper and lower rebound components before slowly descending in layers along a spiral trajectory. This greatly reduces particle collisions, effectively minimizing grain breakage and the generation of broken powder. It prevents broken powder from filling the spaces between grain particles, thus avoiding interference with subsequent ventilation, air exchange, and pest control, preventing mold and insect infestation, improving grain storage quality, and ensuring the quality of subsequent grain production products.

[0008] The objective of this utility model can be achieved through the following technical solutions: This utility model discloses a spiral-guided grain feeding multi-point distribution device, comprising a grain storage silo (used for storing grain) consisting of a grain silo base, a grain silo body, and a grain silo top cover; a spiral guide component vertically arranged on the central axis of the grain storage silo, installed between a discharge frame above the top feed inlet and the bottom discharge outlet; the spiral guide component interferes with and guides the free fall of grain during storage, causing some grain to bounce off the rebound components during its fall and exit through multiple discharge windows, scattering at different locations within the grain storage silo to form a uniform multi-point feeding distribution; simultaneously, another portion of the falling grain is buffered multiple times by the upper and lower rebound components and then slowly falls in layers along a spiral trajectory; the discharge frame is a grid frame, so when grain needs to be discharged, the grain at the bottom of the silo first passes through the discharge frame before falling to the bottom discharge outlet, making it easier to disperse the grain and preventing grain caking; the spiral guide component uses a cylindrical tube as the base, with the tube wall rotated 90 degrees. The structure features four rows of identical discharge windows spaced at equal intervals from top to bottom. Each pair of opposite rows has windows of the same height and is symmetrically distributed. However, adjacent rows are arranged in alternating layers. Every four consecutive layers of discharge windows form a spiral guide. Within each spiral guide, a rebound component is fixed at the lower edge of a corresponding discharge window in a clockwise direction. A U-shaped polyurethane Oxford block is fixed at the lower edge of the discharge window opposite the rebound component. (This invention primarily utilizes the rebound components arranged in a clockwise spiral from top to bottom, with four components forming a spiral guide, in conjunction with the discharge windows to interfere with and guide the free fall of the grain, causing some grain to collide with the rebound component during its descent.) After rebounding, the rebounding components eject the grain through multiple discharge windows, scattering it across different locations in the grain storage silo to create a multi-point, evenly distributed feeding pattern. This solves the problem of natural grading caused by grain particles of different sizes clustering together in traditional silo storage after all grain falls freely and forms a cone-shaped pile. This significantly increases the effective storage volume and improves silo efficiency. Simultaneously, the remaining grain, after being buffered multiple times by the rebounding components, falls slowly and layer by layer along a spiral trajectory, greatly reducing collisions between particles. This effectively reduces grain breakage and the generation of broken powder, preventing broken powder from filling the spaces between grain particles and affecting subsequent ventilation, air exchange, and pest control. It also prevents grain from becoming moldy and infested with insects, improving the storage quality of the grain and ensuring the quality of subsequent grain production products.Furthermore, the cylindrical tube serves as the base for the spiral guide assembly, providing a foundation for the opening of the discharge window, the rebound assembly, and the installation of the U-shaped polyurethane Oxford block. The U-shaped polyurethane Oxford block can buffer the speed of grain that fails to exit smoothly from the discharge window and then rebound it back to the same or next-level rebound assembly, effectively reducing grain damage and improving the storage quality of the grain. The rebound assembly includes a radial inclined support and a polyurethane Oxford plate fixed to the upper surface of the inclined plate of the radial inclined support (the radial inclined support provides the installation foundation and position guarantee for the polyurethane Oxford plate; the polyurethane Oxford plate is wear-resistant and elastic, and is the core of the rebound assembly. Even if the grain is obstructed and rebounds, it will exit through multiple discharge windows and scatter in different positions in the grain storage silo, forming a multi-point even distribution of feed, which is also beneficial for buffering the speed of the grain that continues to fall). The lower base plate in the radial inclined support is fixed horizontally at the lower edge of the corresponding discharge window (this makes it easier to adjust and ensure the installation angle of the polyurethane Oxford plate - because the included angle of the radial inclined support can directly determine the installation angle of the polyurethane Oxford plate).

[0009] The included angle of the radial inclined support described in this utility model is in the range of 40 º to 50 º (because the required installation angle of the polyurethane Oxford board is 40 º to 50 º, which is beneficial for grain rebound and speed buffering).

[0010] The ratio of the orthographic projection length of the polyurethane Oxford board to the diameter of the cylindrical tube in this invention is greater than 1 / 2 and less than or equal to 2 / 3. This ensures that the polyurethane Oxford boards of adjacent layers have overlapping parts, that is, that the grain continuing to fall can contact each level of polyurethane Oxford board, and can be buffered by multiple speeds and fall slowly layer by layer along the spiral trajectory. It also ensures that the polyurethane Oxford board and the cylindrical tube retain sufficient material flow gap, so that the grain continuing to fall will not be blocked and can fall smoothly.

[0011] In this invention, the polyurethane Oxford board is fixed to the upper surface of the radial inclined support plate by bolt connection; the U-shaped polyurethane Oxford block is fixed to the lower edge of the corresponding discharge window by bolt connection (the bolt connection method facilitates quick connection and also makes it easy to replace new polyurethane Oxford boards or U-shaped polyurethane Oxford blocks).

[0012] The polyurethane Oxford board and the U-shaped polyurethane Oxford block described in this utility model are both made of wear-resistant and elastic polyurethane Oxford (the polyurethane Oxford board and the U-shaped polyurethane Oxford block are elastic, which makes it easy for the grain to rebound when it is obstructed and pop out through multiple discharge windows and scatter in different positions of the grain storage silo to form a multi-point uniform distribution of feed, and also helps to buffer the speed of the grain that continues to fall).

[0013] The diameter ratio of the cylindrical tube in the spiral guide assembly to the grain silo body in this utility model is in the range of 1:15 to 1:12 (the size of the cylindrical tube in the spiral guide assembly maintains a certain proportional relationship with the size of the grain silo body, and the size of the cylindrical tube is designed according to the size of the grain silo body).

[0014] The number of bottom discharge ports on the grain silo base described in this utility model is 1 to 5, depending on the diameter of the grain silo body (the larger the diameter of the grain silo body, the more bottom discharge ports there are; conversely, the smaller the diameter, the fewer the number); and a discharge frame is placed above each bottom discharge port (to ensure that the grain discharged from each bottom discharge port is loose grain that is not compacted).

[0015] The discharge window described in this invention is preferably rectangular in shape (easy to process and easy to align).

[0016] The design principle of this utility model is as follows: This invention features a spiral guide assembly within the inner cavity of a grain storage silo, connecting the top inlet and bottom outlet. This invention utilizes the spiral guide assembly to interfere with and guide the free fall of grain during storage. More specifically, the spiral guide assembly uses a cylindrical tube as its base. Four rows of identical discharge windows, spaced 90° apart from top to bottom, are arranged on the tube wall. Each pair of opposite rows of discharge windows are at the same height and symmetrically distributed. The heights of adjacent rows are staggered. Each four consecutive rows of discharge windows constitute a spiral stroke. Within each spiral stroke, a rebound component is fixed at the lower edge of a corresponding discharge window in a clockwise direction. A U-shaped polyurethane Oxford block is fixed at the lower edge of the discharge window opposite the rebound component. This invention primarily utilizes a combination of rebound components arranged in a clockwise spiral pattern from top to bottom, with four components forming a spiral lead, and discharge windows to interfere with and guide the free fall of grain into the storage facility. This causes some grain to bounce off the rebound components during its descent, exiting through multiple discharge windows and scattering at different locations within the storage silo, resulting in a multi-point, evenly distributed feeding pattern. This solves the problem of natural grading caused by grain particles of different sizes clustering in a conical pile formed during traditional free fall, significantly increasing effective storage volume and storage efficiency. Simultaneously, the remaining grain, after being buffered multiple times by the rebound components, falls slowly and layer by layer along a spiral trajectory, greatly reducing particle collisions. This effectively reduces grain breakage and the generation of broken powder, preventing broken powder from affecting subsequent ventilation, air exchange, and pest control, thus preventing mold and insect infestation, improving grain storage quality, and ensuring the quality of subsequent grain production products. In addition, the U-shaped polyurethane Oxford block can buffer the speed of grain that does not pop out of the discharge window and then bounce it back to the same or next stage of the rebound component, which can effectively reduce grain damage and improve the storage quality of grain.

[0017] The beneficial effects of this utility model are as follows: This invention enables a portion of the grain to bounce off the rebounding components during its descent and be ejected through multiple discharge windows, scattering at different locations within the grain storage silo. This creates a multi-point, evenly distributed feeding pattern, solving the problem of natural grading caused by grain particles of different sizes forming a conical pile during traditional grain storage. This significantly increases the effective storage volume and improves storage efficiency. Furthermore, this invention allows another portion of the falling grain to be buffered multiple times by the rebounding components, then slowly descends in layers along a spiral trajectory. This greatly reduces collisions between particles, effectively minimizing grain breakage and the generation of broken powder. It also prevents broken powder from filling the spaces between grain particles, thus avoiding interference with subsequent ventilation, air exchange, and pest control, preventing mold and insect infestation, improving grain storage quality, and ensuring the quality of subsequent grain production products. Attached Figure Description

[0018] Figure 1 This is a perspective view of the structure of this utility model.

[0019] Figure 2 yes Figure 1 A magnified isometric view of a portion of point A in the middle.

[0020] Figure 3 yes Figure 1 A magnified isometric view of a portion of point B in the middle.

[0021] Part numbering in the diagram: 1. Grain storage silo, 1-1. Silo base, 1-1-1. Silo bottom discharge port, 1-2. Silo body, 1-3. Silo top cover, 1-3-1. Silo top inlet; 2. Spiral guide assembly, 2-1. Cylindrical tube, 2-2. Discharge window, 2-3. Rebound assembly, 2-3-1. Radial inclined support, 2-3-1-1. Inclined plate, 2-3-1-2. Lower base plate, 2-3-2. Polyurethane Oxford board, 2-4. U-shaped polyurethane Oxford block; 3. Discharge frame. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figures 1-3As shown, this utility model discloses a spiral flow-guided multi-point grain feeding distribution device, comprising a grain storage silo 1 (used for storing grain) consisting of a grain silo base 1-1, a grain silo body 1-2, and a grain silo top cover 1-3; a spiral flow-guided component 2 vertically arranged on the central axis of the grain storage silo and installed between the discharge frame 3 above the top inlet 1-3-1 and the bottom outlet 1-1-1; the spiral flow-guided component 2 can interfere with and guide the free fall process of the grain when it enters the storage silo, so that some of the grain will rebound due to collision with the rebound component during the fall. After being ejected, the grain is ejected through multiple discharge windows and scattered in different locations within the grain storage silo, forming a multi-point even distribution of feed. Simultaneously, another portion of the falling grain undergoes multiple speed buffering cycles via multiple upper and lower rebound components before slowly descending in layers along a spiral trajectory. The discharge frame 3 is a grid frame; when grain needs to be discharged, the grain at the bottom of the silo first passes through the discharge frame 3 before falling to the bottom discharge port 1-1-1, making it easier to disperse the grain and preventing caking. The spiral guide component 2 uses a cylindrical tube 2-1 as its base, with the tube wall of the cylindrical tube 2-1 rotating 90 degrees... The structure has four rows of identical discharge windows 2-2 arranged at equal intervals from top to bottom. Each pair of opposite rows of discharge windows is symmetrically distributed at the same height, while adjacent rows are arranged in alternating layers. Each set of four consecutive layers of discharge windows forms a spiral guide. Within each spiral guide, a rebound component 2-3 is fixed at the lower edge of a corresponding discharge window in a clockwise direction. A U-shaped polyurethane Oxford block 2-4 is fixed at the lower edge of the discharge window opposite to the rebound component 2-3. (This invention primarily utilizes the rebound components 2-3 arranged in a clockwise spiral from top to bottom, with four forming a spiral guide, in conjunction with the discharge windows 2-2 to interfere with and guide the free fall of the grain entering the storage, causing some grain to fall...) During the falling process, the grain rebounds after colliding with the rebound components and is ejected through multiple discharge windows, scattering at different locations in the grain storage silo. This creates a multi-point, evenly distributed feeding state, solving the problem of natural grading caused by the grain particles of different sizes clustering in a cone-shaped pile after all the grain falls freely during traditional warehousing. This greatly increases the effective storage volume and improves warehousing efficiency. At the same time, the remaining grain is buffered multiple times by the upper and lower rebound components and falls slowly in layers along a spiral trajectory, greatly reducing the impact between particles. This effectively reduces grain breakage and the generation of broken powder, preventing broken powder from filling the spaces between grain particles and affecting subsequent ventilation, air exchange, and pest control. It also prevents grain from becoming moldy and infested with insects, improving the storage quality of the grain and ensuring the quality of subsequent grain production products.Furthermore, the cylindrical tube 2-1 serves as the base of the spiral guide assembly 2, providing a foundation for the opening of the discharge window 2-2, the installation of the rebound assembly 2-3, and the U-shaped polyurethane Oxford block 2-4. The U-shaped polyurethane Oxford block 2-4 can buffer the speed of grain that fails to exit smoothly from the discharge window 2-2 and then rebound it back to the same or next-level rebound assembly 2-3, effectively reducing grain breakage and improving the storage quality of the grain. The rebound assembly 2-3 includes a radial inclined support 2-3-1 and a polyurethane Oxford plate 2-3-2 fixed to the upper surface of the inclined plate 2-3-1-1 of the radial inclined support (the radial inclined support 2-3-1 is a polyurethane Oxford plate 2-3-2). Provides installation foundation and position guarantee; the polyurethane Oxford board 2-3-2 is wear-resistant and elastic, and is the core of the rebound component 2-3. Even if the grain is blocked, it will rebound and pop out through multiple discharge windows 2-2 and scatter in different positions of the grain storage silo to form a multi-point uniform distribution of feed, which is also conducive to buffering the speed of the grain that continues to fall. In addition, the lower bottom plate 2-3-1-2 in the radial inclined support is fixed horizontally at the lower edge of the corresponding discharge window (this makes it easier to adjust and ensure the installation angle of the polyurethane Oxford board 2-3-2 - because the included angle of the radial inclined support 2-3-1 can directly determine the installation angle of the polyurethane Oxford board 2-3-2).

[0024] The included angle of the radial inclined support 2-3-1 described in this utility model is in the range of 40 º to 50 º (because the polyurethane Oxford board 2-3-2 requires an installation angle of 40 º to 50 º, which is beneficial for grain rebound and speed buffering).

[0025] The ratio of the orthographic projection length of the polyurethane Oxford board 2-3-2 to the diameter of the cylindrical tube 2-1 in this invention is greater than 1 / 2 and less than or equal to 2 / 3. This ensures that the polyurethane Oxford boards 2-3-2 of adjacent layers have overlapping parts, that is, that the grain that continues to fall can contact each level of polyurethane Oxford board 2-3-2 and can be buffered by multiple speeds before slowly falling layer by layer along the spiral trajectory. It also ensures that the polyurethane Oxford board 2-3-2 and the cylindrical tube 2-1 retain sufficient material clearance to ensure that the grain that continues to fall does not get blocked and can fall smoothly.

[0026] In this utility model, the polyurethane Oxford board 2-3-2 is fixed to the upper surface of the radial inclined support plate by bolt connection; the U-shaped polyurethane Oxford block 2-4 is fixed to the lower edge of the corresponding discharge window by bolt connection (the bolt connection method facilitates quick connection and also makes it easy to replace new polyurethane Oxford board 2-3-2 or U-shaped polyurethane Oxford block 2-4).

[0027] In this invention, the polyurethane Oxford board 2-3-2 and the U-shaped polyurethane Oxford block 2-4 are both made of wear-resistant and elastic polyurethane Oxford (the polyurethane Oxford board 2-3-2 and the U-shaped polyurethane Oxford block 2-4 are elastic, which makes it easy for the grain to bounce off the obstruction and bounce out through multiple discharge windows 2-2 and scatter in different positions of the grain storage silo to form a multi-point uniform distribution of feed, and also helps to buffer the speed of the grain that continues to fall).

[0028] In this utility model, the diameter ratio of the cylindrical tube 2-1 in the spiral guide assembly 2 to the grain silo body 1-2 is in the range of 1:15 to 1:12 (the size of the cylindrical tube 2-1 in the spiral guide assembly 2 and the size of the grain silo body 1-2 maintain a certain proportional relationship, and the size of the cylindrical tube 2-1 is designed according to the size of the grain silo body 1-2).

[0029] The number of bottom discharge ports 1-1-1 opened on the grain silo base 1-1 in this utility model is 1 to 5, which is selected according to the diameter of the grain silo body 1-2 (the larger the diameter of the grain silo body 1-2, the more bottom discharge ports 1-1-1 there are; conversely, the smaller the diameter, the fewer the number); and a discharge frame 3 is placed above each bottom discharge port 1-1-1 (to ensure that the grain discharged from each bottom discharge port 1-1-1 is loose grain that is not compacted).

[0030] The discharge window 2-2 described in this utility model is preferably rectangular in shape (easy to process and easy to align).

[0031] The specific usage of this utility model is as follows: First, assemble this utility model according to the structural description above and the positional relationships shown in the attached drawings. After assembly, it can be put into normal use.

[0032] When grain needs to be stored, it is first unloaded from the top inlet 1-3-1 of the grain storage silo 1 into the upper inlet of the spiral guide assembly 2 using an automatic lifting and conveying system. Then, the grain begins to fall freely within the cylindrical tube 2-1 of the spiral guide assembly 2. Subsequently, the falling grain collides with the rebound assembly 2-3, and its trajectory is interfered with and altered. This invention primarily utilizes the cooperation of the rebound assemblies 2-3, arranged in a clockwise spiral from top to bottom with four components forming one spiral stroke, and the discharge windows 2-2 to interfere with and guide the free fall of the grain. This causes some grain to be deflected and bounced after colliding with the rebound assemblies 2-3 during its fall, exiting through multiple discharge windows 2-2 and scattering into the storage area. The grain silo's multi-point, evenly distributed feeding system solves the problem of natural grading caused by grain particles of different sizes clustering in a cone-shaped pile after free fall, a problem inherent in traditional grain storage. This significantly increases effective storage volume and improves silo efficiency. Simultaneously, the remaining grain, after being buffered multiple times by multiple rebound components 2-3, falls slowly and layer by layer along a spiral trajectory, greatly reducing collisions between particles. This effectively reduces grain breakage and the generation of broken powder, preventing it from interfering with ventilation, air exchange, and pest control, thus preventing mold and insect infestation, improving storage quality, and ensuring the quality of subsequent grain products. Furthermore, the U-shaped polyurethane Oxford block 2-4 buffers grain that fails to exit smoothly through the discharge window 2-2, allowing it to bounce back to the same or next rebound component 2-3, effectively reducing breakage and improving storage quality.

[0033] When the stored grain needs to be removed from the silo, simply open the bottom discharge port 1-1-1, which connects to the external grain receiving pipe or equipment. This way, the grain located at the bottom of the silo 1 will be broken up by the discharge frame 3 and fall into the bottom discharge port 1-1-1 in a loose state, thus being smoothly discharged to the external grain receiving pipe or equipment, achieving smooth removal of the stored grain from the silo.

Claims

1. A spiral-guided grain feeding multi-point distribution device, characterized in that: The device includes a grain storage silo (1) consisting of a grain silo base (1-1), a grain silo body (1-2), and a grain silo top cover (1-3), and a spiral guide assembly (2) vertically arranged on the central axis of the grain storage silo and installed between the discharge frame (3) above the top inlet (1-3-1) and the bottom outlet (1-1-1). The spiral guide assembly (2) uses a cylindrical tube (2-1) as the base, and four rows of discharge windows (2-2) of the same size are opened on the tube wall of the cylindrical tube (2-1) at 90° intervals from top to bottom. The discharge windows of the same size are arranged at the same intervals from top to bottom. The height of each pair of opposite rows of discharge windows is the same and they are symmetrically distributed. The height of each pair of adjacent rows of discharge windows is also different. The material is arranged in staggered layers, with each four consecutive layers of discharge windows forming a spiral guide. In each spiral guide, a rebound component (2-3) is fixed at the lower edge of a corresponding discharge window in a clockwise direction. A U-shaped polyurethane Oxford block (2-4) is fixed at the lower edge of the discharge window opposite to the discharge window where the rebound component (2-3) is located. The rebound component (2-3) includes a radial inclined support (2-3-1) and a polyurethane Oxford board (2-3-2) fixed on the upper surface of the inclined plate (2-3-1-1) of the radial inclined support. The lower bottom plate (2-3-1-2) in the radial inclined support is fixed horizontally at the lower edge of the corresponding discharge window.

2. The spiral-guided grain feeding multi-point distribution device according to claim 1, characterized in that: The included angle of the radial oblique support (2-3-1) ranges from 40 º to 50 º.

3. The spiral-guided grain feeding multi-point distribution device according to claim 1, characterized in that: The ratio of the orthographic projection length of the polyurethane Oxford board (2-3-2) to the diameter of the cylindrical tube (2-1) is greater than 1 / 2 and less than or equal to 2 / 3.

4. The spiral-guided grain feeding multi-point distribution device according to claim 1, characterized in that: The polyurethane Oxford board (2-3-2) is fixed to the upper surface of the radial inclined support plate by bolt connection; the U-shaped polyurethane Oxford block (2-4) is fixed to the lower edge of the corresponding discharge window by bolt connection.

5. The spiral-guided grain feeding multi-point distribution device according to claim 1, characterized in that: Both the polyurethane Oxford board (2-3-2) and the U-shaped polyurethane Oxford block (2-4) are made of polyurethane Oxford material, which is wear-resistant and elastic.

6. The spiral-guided grain feeding multi-point distribution device according to claim 1, characterized in that: The diameter ratio of the cylindrical tube (2-1) in the spiral guide assembly (2) to the grain silo body (1-2) is in the range of 1:15 to 1:

12.

7. The spiral-guided grain feeding multi-point distribution device according to claim 1, characterized in that: The number of bottom unloading ports (1-1-1) opened on the grain silo base (1-1) is 1 to 5, depending on the diameter of the grain silo body (1-2); and a discharge frame (3) is placed above each bottom unloading port (1-1-1).

8. The spiral-guided grain feeding multi-point distribution device according to claim 1, characterized in that: The discharge window (2-2) is rectangular in shape.

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