Multi-bin combined discharge device

Abstract

This utility model discloses a multi-bin combined discharge device, relating to the transportation field, which solves the problem of material splashing to both sides of the conveyor belt when multiple silos unload onto the same belt conveyor. The technical solution adopted by this utility model is as follows: the multi-bin combined discharge device includes at least two silos and a belt conveyor positioned below each silo. Each silo has a discharge port at its bottom connected to a discharge pipe. The outlet end of the discharge pipe is vertically downward and directly opposite the conveyor belt. Baffles are provided on both sides of the outlet end of the discharge pipe along the material conveying direction. Material falls from the outlet end of the discharge pipe onto the conveyor belt, and any splashing material is blocked by the baffles, preventing material from falling outside the conveyor belt. Along the material conveying direction, the distance between the two baffles below each silo gradually increases, ensuring that each silo has space to accommodate the unloaded material at the discharge position on the conveyor belt, effectively preventing material from splashing outside the conveyor belt and reducing dust problems.

Description

Technical Field

[0001] This utility model relates to the field of transportation, and in particular to a transportation or storage device, specifically a discharge device for unloading materials from multiple silos onto the same belt conveyor. Background Technology

[0002] Granular and powdery materials are stored in silos. To facilitate material retrieval, a discharge port is installed at the bottom of the silo and connected to a discharge pipe, which is also equipped with a discharge valve. A belt conveyor is installed below the discharge pipe. When the discharge valve is opened, the material falls onto the conveyor belt and is then transported to the downstream process.

[0003] The coke conveying system for the green anode manufacturing process in aluminum electrolysis typically consists of three silos and one belt conveyor. The belt conveyor is positioned below the three silos. Each silo has a discharge port at its bottom connected to a discharge pipe, and each discharge pipe is equipped with a discharge valve. The outlet of each discharge pipe faces the conveyor belt. Depending on production needs, the three silos can discharge individually, any two silos can discharge simultaneously, or all three silos can discharge simultaneously. The three silos are labeled as silo #1, silo #2, and silo #3 along the material conveying direction. When all three silos discharge simultaneously onto the conveyor belt, the material in silo #2 does not fall directly onto the conveyor belt but rather onto the cone formed by the discharge from silo #1. Therefore, the material easily splashes to both sides of the conveyor belt, causing dust pollution, and even spilling material outside the conveyor belt. Similarly, for the material in hopper #3, the material falls directly onto the cone formed by the unloading of hoppers #1 and #2, making it easier for the material to splash to both sides of the conveyor belt, resulting in dust and material spilling off the conveyor belt.

[0004] Patent CN 212450120 U discloses a covering device for conveyor belts to facilitate mobile unloading. It includes a fixed steel frame connected to an unloader. The discharge port of the unloader's chute passes through the fixed steel frame and is located above the conveyor belt on the conveyor support. Side steel sections are fixed on both sides of the conveyor support, and side baffles are fixed on the outer sides of the side steel sections. The side baffles are located outside the conveyor belt; that is, the projections of the side baffles and the conveyor belt on the same horizontal plane do not overlap. Therefore, the side baffles do not effectively prevent material from splashing outside the conveyor belt, nor do they suppress dust generation. Utility Model Content

[0005] This invention provides a multi-bin combined discharge device to solve the problem that when multiple silos discharge material to the same belt conveyor, the material tends to splash to both sides of the conveyor belt.

[0006] The technical solution adopted by this utility model is: a multi-bin combined discharge device, including at least two bins arranged in a straight line, and a belt conveyor installed below each bin. Each bin has a discharge port at its bottom and is connected to a discharge pipe. The discharge pipe is equipped with a discharge valve. The outlet end of the discharge pipe is vertically downward and directly faces the conveyor belt of the belt conveyor. A baffle plate is symmetrically provided on both sides of the outlet end of the discharge pipe along the material conveying direction. The two baffle plates are arranged vertically and are fixedly installed on the discharge pipe or the frame of the belt conveyor. A gap is reserved between the bottom edge of the baffle plate and the conveyor belt of the belt conveyor. Along the material conveying direction, the distance between the two baffle plates below each bin increases gradually, and the distance between the two baffle plates below the last bin is less than the width of the conveyor belt.

[0007] To enable the silo to automatically unload all materials, the bottom of the silo is shaped like a cone or pyramid, wider at the top and narrower at the bottom, with the discharge port located at the lowest point of the silo bottom.

[0008] To further reduce the risk of materials falling off the conveyor belt, the conveyor belt is further designed to have a horizontal shape in the middle and an upward curve at both ends in its cross-section; or the conveyor belt has a downward convex arc shape in its cross-section.

[0009] Specifically: There are three hoppers, and the distances between the two baffles corresponding to the three hoppers along the material conveying direction are 20cm, 25cm and 30cm respectively.

[0010] To better address the dust problem caused by materials falling onto the conveyor belt, a further step is taken: a dust hood is fixedly installed at the outlet end of the unloading pipe of each hopper. The outlet end of the unloading pipe is located inside the dust hood, and a gap is reserved between the dust hood and the conveyor belt. The dust hood is equipped with a negative pressure connector, and the baffle plate is fixedly installed inside the dust hood.

[0011] To further reduce the splashing of material falling onto the conveyor belt, the dust collector is equipped with a scraper plate located downstream of the discharge pipe outlet along the material conveying direction. In a cross-section perpendicular to the material conveying direction, the shape of the bottom edge of the scraper plate matches the shape of the conveyor belt, and a gap is reserved between the scraper plate and the conveyor belt.

[0012] The beneficial effects of this utility model are as follows: A baffle plate is symmetrically installed on both sides of the discharge pipe outlet end along the material conveying direction. Material falls from the discharge pipe outlet end onto the conveyor belt, and splashing material is blocked by the baffle plate, preventing material from falling outside the conveyor belt. A gap is reserved between the baffle plate and the conveyor belt, so the baffle plate does not obstruct the movement of the conveyor belt. Along the material conveying direction, the distance between the two baffle plates below each hopper gradually increases, meaning the distance between the two baffle plates corresponding to the next hopper is greater than the distance between the two baffle plates corresponding to the previous hopper. When unloading from the current hopper, even if the conveyor belt already has material unloaded from the previous hopper, the corresponding conveyor belt still has space to accommodate the unloaded material. The gradually increasing distance between the two baffle plates below each hopper ensures that each hopper has space to accommodate the unloaded material at the unloading position on the conveyor belt, effectively preventing material from splashing outside the conveyor belt and reducing the phenomenon of material colliding with the baffle plate, while also reducing dust problems. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of one embodiment of the multi-bin combined discharge device of this utility model.

[0014] Figure 2 yes Figure 1 The illustrated embodiment is a schematic diagram along the material conveying direction.

[0015] Attached reference numerals: 1. Hopper; 2. Belt conveyor; 3. Discharge pipe; 4. Discharge valve; 5. Baffle plate; 6. Material. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figure 1 As shown, the multi-bin combined discharge device of this utility model includes at least two bins 1 arranged in a straight line, and a belt conveyor 2 installed below each bin 1. The bins 1 are arranged in a straight line, and a belt conveyor 2 is installed below each bin 1 to ensure that each bin 1 can unload material into the belt conveyor 2, which then transports the material 6 to subsequent processes. Each bin 1 has a discharge port at its bottom connected to a discharge pipe 3. The discharge pipe 3 is equipped with a discharge valve 4, which controls the discharge speed. The outlet end of the discharge pipe 3 is vertically downward and directly opposite the conveyor belt of the belt conveyor 2. The outlet end of the discharge pipe 3 does not contact the conveyor belt of the belt conveyor 2; a gap is reserved between them. To enable the bins 1 to automatically unload all the material 6, the bottom of the bins 1 is conical or pyramidal in shape, wider at the top and narrower at the bottom, with the discharge port located at the lowest point of the bottom.

[0018] A baffle plate 5 is symmetrically arranged on both sides of the discharge pipe 3 along the conveying direction of the material 6. That is, in the horizontal section, the two baffle plates 5 are symmetrically arranged, and the axis of symmetry passes through the center of the discharge pipe 3. The two baffle plates 5 located at the discharge pipe 3 outlet are both arranged vertically and are fixedly installed on the frame of the discharge pipe 3 or the belt conveyor 2. The bottom edge of the baffle plate 5 is a straight edge, and a gap is reserved between it and the conveyor belt of the belt conveyor 2 to prevent the conveyor belt of the belt conveyor 2 from affecting the movement of the conveyor belt. The material 6 falls from the discharge pipe 3 outlet to the conveyor belt, and the splashing material 6 is blocked by the baffle plate 5 to prevent the material 6 from splashing outside the conveyor belt.

[0019] Along the material conveying direction 6, that is, along... Figure 1 As indicated by the arrows, the spacing between the two baffle plates 5 below each level of hopper 1 increases progressively, with the spacing between the two baffle plates 5 below the last level of hopper 1 being less than the width of the conveyor belt. For any two adjacent levels of hopper 1, the spacing between the two baffle plates 5 below the later level of hopper 1 is greater than the spacing between the two baffle plates 5 below the earlier level of hopper 1. When the later level of hopper 1 unloads, the conveyor belt has a larger effective width to accommodate the material 6, reducing the phenomenon of material 6 colliding with the baffle plates 5 and mitigating dust pollution. Dust pollution mainly occurs in the gap between the bottom edge of the baffle plate 5 and the conveyor belt. The spacing between the two baffle plates 5 below each level of hopper 1 increases progressively along the material 6 conveying direction, reducing the phenomenon of material 6 colliding with the baffle plates 5. The spacing between the two baffle plates 5 below the last level of hopper 1 is less than the width of the conveyor belt, meaning that all baffle plates 5 are completely within the vertical projection range of the conveyor belt, preventing material 6 from splashing outside the conveyor belt.

[0020] To further reduce the risk of material 6 falling off the conveyor belt, the conveyor belt has a horizontal shape in the middle and an upward curve at both ends in its cross-section, that is, the conveyor belt has a cross-section shaped like a ︺; or, the conveyor belt has a downward convex arc shape in its cross-section, that is, the conveyor belt has a cross-section shaped like a ︶. Figure 2 As shown.

[0021] The quantity of silos 1 is determined based on the type of raw materials, etc. For example, see [link to example]. Figure 1 There are three hoppers 1. Along the material conveying direction 6, the spacing between the two baffles 5 corresponding to each hopper 1 is determined according to the unloading capacity of that hopper 1. For example, along the material conveying direction 6, the spacing between the two baffles 5 corresponding to the three hoppers 1 is 20cm, 25cm and 30cm respectively.

[0022] To better address the dust problem caused by material 6 falling onto the conveyor belt, a dust collector is fixedly installed at the outlet end of the discharge pipe 3 of each hopper 1. The outlet end of the discharge pipe 3 is located inside the dust collector, typically at the center of the dust collector. A gap is maintained between the dust collector and the conveyor belt to prevent contact and interference with the belt's movement. The dust collector is equipped with a negative pressure connector for connection to a negative pressure pipeline. A baffle plate 5 is fixedly installed inside the dust collector.

[0023] For two adjacent hoppers 1, along the material 6 conveying direction, the material from the later hopper 1 does not fall directly onto the conveyor belt, but rather onto the cone formed by the discharge of the earlier hopper 1. Therefore, the material easily rolls to both sides of the conveyor belt and impacts the baffle plates 5. If the material 6 falling onto the conveyor belt of the belt conveyor 2 is scraped flat, the splashing phenomenon after the material 6 falls onto the conveyor belt can be reduced. For this purpose, a scraper can also be installed inside the dust collector hood. The scraper is located downstream of the outlet end of the discharge pipe 3 along the material 6 conveying direction. The intersection of the plane corresponding to the scraper and the horizontal plane is perpendicular to the material 6 conveying direction, and the scraper can be vertical or inclined. In a cross-section perpendicular to the material 6 conveying direction, the shape of the bottom of the scraper is consistent with the shape of the conveyor belt, and a gap is reserved between the scraper and the conveyor belt to ensure that the thickness of the material on the conveyor belt is consistent or substantially consistent at all positions.

Claims

1. A multi-bin combined discharge device, comprising at least two bins (1) arranged in a straight line, and a belt conveyor (2) disposed below each bin (1), wherein each bin (1) has a discharge port at its bottom and is connected to a discharge pipe (3), the discharge pipe (3) is provided with a discharge valve (4), and the outlet end of the discharge pipe (3) is vertically downward and directly opposite the conveyor belt of the belt conveyor (2), characterized in that: A baffle plate (5) is symmetrically provided on both sides of the outlet end of the unloading pipe (3) along the material conveying direction. The two baffle plates (5) are arranged vertically and are fixedly installed on the frame of the unloading pipe (3) or the belt conveyor (2). A gap is reserved between the bottom edge of the baffle plate (5) and the conveyor belt of the belt conveyor (2). Along the material conveying direction, the distance between the two baffle plates (5) below each level of silo (1) increases gradually, and the distance between the two baffle plates (5) below the last level of silo (1) is less than the width of the conveyor belt.

2. The multi-bin combined discharge device as described in claim 1, characterized in that: The bottom of the silo (1) is a cone or pyramid shape with a larger top and a smaller bottom, and the discharge port is located at the lowest point of the silo bottom.

3. The multi-bin combined discharge device as described in claim 1, characterized in that: The conveyor belt has a horizontal shape in the middle and an upward curve at both ends in its cross-section; or the conveyor belt has a downward convex arc shape in its cross-section.

4. The multi-bin combined discharge device as described in claim 1, characterized in that: There are three hoppers (1). Along the material conveying direction, the distance between the two baffles (5) corresponding to the three hoppers (1) is 20cm, 25cm and 30cm respectively.

5. The multi-bin combined discharge device as described in any one of claims 1 to 4, characterized in that: Each silo (1) has a dust removal hood fixedly installed at the outlet end of the unloading pipe (3). The outlet end of the unloading pipe (3) is located inside the dust removal hood. A gap is reserved between the dust removal hood and the conveyor belt. The dust removal hood is equipped with a negative pressure connector. The baffle plate (5) is fixedly installed inside the dust removal hood.

6. The multi-bin combined discharge device as described in claim 5, characterized in that: The dust collector is also equipped with a scraper, which is located downstream of the outlet end of the discharge pipe (3) along the material conveying direction. On the cross section perpendicular to the material conveying direction, the shape of the bottom edge of the scraper is consistent with the shape of the conveyor belt, and a gap is reserved between the scraper and the conveyor belt.

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