A particulate material conveying apparatus

Abstract

A granular material conveying device includes an inclined conveying pipe and an auger disposed therein. The conveying pipe has an inlet on its upper lower side and an outlet on its lower upper side. A cleaning port is located at the bottom inner side of the conveying pipe, below the auger. A first cleaning plate is detachably connected to the cleaning port. The upper surface of the first cleaning plate is flush with the inner wall of the conveying pipe. The first cleaning plate has multiple cleaning holes, the inner diameter of which is smaller than the outer diameter of the granular material. A support plate is also located below the first cleaning plate at the cleaning port. A collection box communicating with the cleaning port is located below the cleaning port, and a collection port is located on one side of the bottom of the collection box. This invention provides a dedicated discharge channel for fine particles and powder generated by collision and friction. Under the action of gravity, the particles can fall through the cleaning holes on the first cleaning plate into the support plate. After a certain period of storage, the support plate is removed, and the powder or fine particles fall into the collection box, solving the problem of powder accumulation inside the machine.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, specifically to a granular material conveying device. Background Technology

[0002] A screw conveyor is a basic piece of equipment used for conveying granular materials. Its structure includes a horizontally or inclined conveying pipe and a screw auger coaxially arranged inside the conveying pipe. The auger is driven to rotate by a drive device, and a small gap is maintained between its outer edge and the inner wall of the conveying pipe to prevent jamming.

[0003] During the conveying process, collisions and compressions inevitably occur between granular materials and between the materials and the auger and the inner wall of the conveying pipe, easily generating fine particles and powder. Due to the gap between the auger and the pipe wall, as well as the influence of gravity and vibration on the materials during the conveying process, these fine particles and powder will pass through the gaps of the main material, move against the conveying direction towards the lower area of ​​the feed inlet, and gradually accumulate, forming a difficult-to-clean sanitary dead corner, which is not convenient to clean. Moreover, when the equipment is used to convey different types or batches of materials, the accumulated residues will cause cross-contamination of the materials, affecting product quality. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a particulate material conveying device.

[0005] The technical solution of this utility model is as follows: A granular material conveying device includes an inclined conveying pipe and an auger disposed therein. The upper side of the lower part of the conveying pipe is provided with a feed inlet and the lower side of the upper part is provided with a discharge outlet. A cleaning port is opened at the bottom of the inner side of the conveying pipe and is located below the auger. A first cleaning plate is detachably connected to the cleaning port. The upper end face of the first cleaning plate is flush with the inner wall of the conveying pipe. The first cleaning plate is provided with a plurality of cleaning holes. The inner diameter of the cleaning holes is smaller than the outer diameter of the granular material. A support plate is also provided on the cleaning port and located below the first cleaning plate. Below the cleaning port is a collection box connected to it, and the bottom side of the collection box has a collection port.

[0006] Preferably, the lower end face of the first cleaning plate and the upper end face of the support plate are spaced apart, with a spacing of 0.5-2 cm.

[0007] Preferably, the lower end face of the first cleaning plate is provided with a plurality of support feet, and the lower end face of the support feet abuts against the upper end face of the support plate.

[0008] To facilitate the installation of the first cleaning plate and the support plate at the cleaning port, the edge of the first cleaning plate will not have a large gap with the cleaning port. The conveying pipe has a tubular structure, and both the first cleaning plate and the support plate are arc-shaped plates with curvatures that match the curvature of the conveying pipe.

[0009] Preferably, the central angle corresponding to the curvature of the first cleaning plate is 30°-60°.

[0010] To facilitate the falling of powder or fine particles at the lowest point into the collection box, the first cleaning plate has an elongated opening on the side near the bottom of the conveying pipe, the width of which is smaller than the inner diameter of the cleaning hole.

[0011] To avoid affecting the structural strength of the first cleaning plate and the connection strength with the conveying pipe, the maximum length of the opening is less than 1 / 2 of the maximum width of the first cleaning plate.

[0012] Preferably, the bottom surface of the collection box is adapted to the curvature of the collection port, and the width of the cleaning box is greater than the length of the cleaning port.

[0013] Furthermore, a drive motor is connected to the lower end of the auger, and the drive motor is connected to the bottom housing of the conveying pipe.

[0014] The beneficial effects of this utility model are as follows: By creating a cleaning port at the lowest point of the inclined conveying pipe and placing a collection box below it, a dedicated discharge channel is provided for fine particles and powder generated by collision and friction. Under the influence of gravity, the powder can fall into the support plate through the cleaning holes on the first cleaning plate. After a certain period of storage, the support plate is removed, allowing the powder or fine particles to fall into the collection box, while normal particulate material is blocked in the conveying pipe and continues to be conveyed. This solves the problem of powder accumulation inside the machine and avoids batch-to-batch cross-contamination caused by residues.

[0015] The powder cleaning process can be carried out simultaneously during the conveying operation without stopping the machine, significantly improving the equipment's efficiency and automation level. The design of the first cleaning plate being flush with the inner wall of the conveying pipe avoids interference with the normal material conveying, prevents the risk of local blockage, and ensures a smooth and stable conveying process.

[0016] A support plate is installed below the first cleaning plate, which can support the first cleaning plate with several cleaning holes and prevent it from being squeezed and deformed by the granular material. The support plate and the first cleaning plate are spaced apart so that the powder or fine particles can be temporarily collected between the support plate and the first cleaning plate. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a structural diagram; Figure 2 This is a top view; Figure 3 for Figure 2 A schematic diagram of the partial cross-sectional structure in the AA direction; Figure 4 forFigure 3 Enlarged structural diagram at point A in the middle; Figure 5 for Figure 3 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the first cleaning plate and the support plate structure; Figure 7 This is a schematic diagram of the internal partial structure; The components represented by the various reference numerals in the diagram are: 1. Conveying pipe; 101. Feed inlet; 102. Discharge outlet; 103. Cleaning port; 2. Screwdriver; 3. Drive motor; 4. First cleaning plate; 401. Cleaning hole; 402. Opening; 5. Support plate; 6. Collection box; 601. Collection port; 7. Support foot; 8. First connector; 9. Second connector. Detailed Implementation

[0018] See Figure 1 , Figure 2 and Figure 3 As shown, a granular material conveying device includes an inclined conveying pipe 1 and an auger 2 disposed therein. The lower end of the auger 2 is connected to a drive motor 3, which is connected to the bottom shell of the conveying pipe 1. The upper side of the lower part of the conveying pipe 1 has a feed inlet 101, and the lower side of the upper part has a discharge outlet 102. The bottom inner side of the conveying pipe 1 has a cleaning port 103 located below the auger 2. The granular material is conveyed upward from the feed inlet 101 at the bottom of the conveying pipe 1 to the next process.

[0019] See Figure 4 , Figure 5 and Figure 6 As shown, a first cleaning plate 4 is detachably connected to the cleaning port 103. The upper surface of the first cleaning plate 4 is flush with the inner wall of the conveying pipe 1. The first cleaning plate 4 has multiple cleaning holes 401, the inner diameter of which is smaller than the outer diameter of the granular material. A support plate 5 is also provided on the cleaning port 103 below the first cleaning plate 4. The design of the first cleaning plate 4 being flush with the inner wall of the conveying pipe 1 avoids interference with the normal conveying of materials, prevents the risk of local blockage, and ensures the smoothness and stability of the conveying process.

[0020] The above structure provides a dedicated discharge channel for fine particles and powder generated by collision and friction by opening a cleaning port 103 at the lowest inclined point of the bottom of the conveying pipe 1 and setting a collection box 6 below it. Under the action of gravity, the powder can fall into the support plate 5 through the cleaning hole 401 on the first cleaning plate 4. After a certain period of storage, the support plate 5 is removed to let the powder or fine particles fall into the collection box 6, while normal particulate material is blocked in the conveying pipe 1 and continues to be conveyed, thus solving the problem of powder accumulation in the machine.

[0021] To facilitate the installation of the first cleaning plate 4 and the support plate 5 in the cleaning port 103, the edge of the first cleaning plate 4 will not have a large gap with the cleaning port 103. The conveying pipe 1 has a tubular structure and a semi-circular structure at the bottom. The first cleaning plate 4 and the support plate 5 are both arc-shaped plates, and their curvature is adapted to the curvature of the conveying pipe 1. The central angle corresponding to the curvature of the first cleaning plate 4 is 30°-60°, and the central angle corresponding to the curvature of the support plate 5 is 30°-60°. The curvatures of the first cleaning plate 4 and the support plate 5 are consistent, and the overall thickness of the first cleaning plate 4 and the support plate 5 is not less than the depth of the cleaning port.

[0022] The lower end face of the first cleaning plate 4 is spaced apart from the upper end face of the support plate 5 by 0.5-2 cm. The lower end face of the first cleaning plate 4 is provided with multiple support feet 7, the lower end faces of which abut against the upper end face of the support plate 5. The first cleaning plate 4 is connected to the conveying pipe 1 via multiple first connectors 8, and the support plate 5 is connected to the conveying pipe 1 via multiple second connectors 9. Both the first connectors 8 and the second connectors 9 are fastening bolts.

[0023] See Figure 5 and Figure 6 As shown, in order to facilitate the falling of powder or fine particles at the lowest point into the collection box 6, the first cleaning plate 4 has an elongated opening 402 on the side near the bottom of the conveying pipe 1. The width of the opening 402 is smaller than the inner diameter of the cleaning hole 401.

[0024] To avoid affecting the structural strength of the first cleaning plate 4 and its connection strength with the conveying pipe 1, the maximum length of the opening 402 is shorter than half the maximum width of the first cleaning plate 4. Furthermore, to prevent the first cleaning plate 4 from deforming under the feeding of particulate material, the thickness of the first cleaning plate 4 is set to be greater than the thickness of the support plate 5.

[0025] See Figure 7 As shown, a collection box 6 is provided below the cleaning port 103 and communicates with it. A collection port 601 is provided on one side of the bottom of the collection box 6. The bottom surface of the collection box 6 is adapted to the curvature of the collection port 601, and the width of the cleaning box is greater than the length of the cleaning port 103.

Claims

1. A granular material conveying device, comprising an inclined conveying pipe (1) and an auger (2) disposed therein, wherein the conveying pipe (1) has an inlet (101) on the upper side of its lower part and an outlet (102) on the lower side of its upper part, characterized in that, The bottom inner side of the conveying pipe (1) is provided with a cleaning port (103). The cleaning port (103) is located below the auger (2). A first cleaning plate (4) is detachably connected to the cleaning port (103). The upper end face of the first cleaning plate (4) is flush with the inner wall of the conveying pipe (1). A plurality of cleaning holes (401) are provided on the first cleaning plate (4). The inner diameter of the cleaning holes (401) is smaller than the outer diameter of the granular material. A support plate (5) located below the first cleaning plate (4) is also provided on the cleaning port (103). Below the cleaning port (103) is a collection box (6) connected to it, and a collection port (601) is provided on one side of the bottom of the collection box (6).

2. A particulate material conveying apparatus according to claim 1, wherein, The lower end face of the first cleaning plate (4) is spaced apart from the upper end face of the support plate (5), with a spacing of 0.5-2 cm.

3. A particulate material conveying apparatus according to claim 2, wherein, The lower end face of the first cleaning plate (4) is provided with a plurality of support feet (7), and the lower end face of the support feet (7) abuts against the upper end face of the support plate (5).

4. A particulate material conveying apparatus according to claim 1, wherein, The conveying pipe (1) is a tubular structure, and the first cleaning plate (4) and the support plate (5) are both arc-shaped plates, and their curvature is adapted to the curvature of the conveying pipe (1).

5. A granular material conveying device according to claim 1, characterized in that, The central angle corresponding to the arc of the first cleaning plate (4) is 30°-60°.

6. A particulate material conveying apparatus according to claim 1, wherein, The first cleaning plate (4) has an elongated opening (402) on one side near the bottom of the conveying pipe (1), and the width of the opening (402) is smaller than the inner diameter of the cleaning hole (401).

7. A particulate material conveying apparatus according to claim 6, wherein, The maximum length of the opening (402) is less than 1 / 2 of the maximum width of the first cleaning plate (4).

8. A particulate material conveying apparatus according to claim 1, wherein, The bottom surface of the collection box (6) is adapted to the curvature of the collection port (601), and the width of the cleaning box is greater than the length of the cleaning port (103).

9. A particulate material conveying apparatus according to claim 1, wherein, The auger (2) is connected to a drive motor (3) at the lower end, and the drive motor (3) is connected to the bottom of the conveying pipe (1).

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