Blanking port material buffering device

Abstract

The application relates to the technical field of material discharging, and particularly discloses a material buffer device for a discharging port, which comprises a discharging hopper, the bottom end of the discharging hopper is provided with a discharging port, two belt conveyors are respectively arranged at the right side of the discharging hopper and below the discharging port, at least one steel plate is arranged at a material impact surface of the discharging hopper, and the side of the steel plate, which faces the material flow direction, extends horizontally and outwardly into the discharging hopper. The steel plate extends into the hopper, and the front surface of the wear-resistant block cooperatively receives material scouring, so that the direct contact between the material and the discharging hopper body is effectively isolated, the problems of hopper body abrasion and wear-through are solved, the material accumulation layer is formed on the scouring surface, the self-protection effect of'material hitting material' is realized, and the service life of the hopper is significantly prolonged. Finally, the modular connection mode facilitates the quick replacement of the wear-resistant block, and greatly reduces the downtime maintenance time and maintenance operation amount caused by hopper abrasion.

Description

Technical Field

[0001] This invention relates to the field of material feeding technology, and specifically discloses a material buffer device for a feeding port. Background Technology

[0002] Belt conveyors are core equipment in bulk material conveying systems and are widely used in industries such as metallurgy, mining, power, and building materials. During the material feeding stage, as material falls from the upstream conveyor belt into the downstream conveyor belt or silo, it typically needs to be guided and collected through a feeding hopper (or feeding chute). For conveying materials with high drops, large sizes, and high hardness (such as sintered ore and iron ore), the inner wall of the feeding hopper continuously withstands the strong impact and high-speed friction of the material.

[0003] Taking sintered ore as an example, it has characteristics such as large particle size, sharp edges, high density, and high temperature. During the feeding process, the finished sintered ore conveyed by the finished product line has the characteristics of large particle size, high hardness, high density, and high temperature, which easily causes erosion and wear on the feeding hopper of the belt conveyor, resulting in hopper wear-through, liner detachment, and secondary accidents such as scratches on the downstream conveyor belt. Therefore, a material buffer device at the feeding port is needed to solve this problem. Summary of the Invention

[0004] This invention proposes a material buffer device for the discharge port. By adding a wear-resistant material box device to the material scouring surface of the discharge hopper of a belt conveyor, the buffer device can directly absorb the scouring of the material and effectively isolate the material from the frontal scouring of the discharge hopper body, thereby preventing wear on the hopper body. This wear-resistant buffer device solves the problem of hopper body wear and scouring, reduces downtime for maintenance and repair work, and lowers safety risks during maintenance operations.

[0005] This invention is implemented as follows: a material buffer device for a discharge port, comprising:

[0006] A feeding funnel, wherein the bottom end of the feeding funnel is provided with a feeding port;

[0007] Two belt conveyors are located on the right side of the discharge hopper and below the discharge port, respectively;

[0008] At least one steel plate is disposed at the material impact surface of the feeding hopper, and the steel plate extends horizontally outward into the feeding hopper on the side facing the material flow direction;

[0009] A cast wear-resistant block is located on the upper end face of the steel plate and inside the feeding hopper;

[0010] The upright plate is fixedly connected to the wear-resistant block by high-strength internal hex bolts.

[0011] As a preferred embodiment of the material buffer device for the discharge port of the present invention, an inclined reinforcing rib plate is fixedly connected between the bottom end of the steel plate and the outer wall of the discharge funnel.

[0012] As a preferred embodiment of the material buffer device at the discharge port of the present invention, a limiting plate is fixedly connected to the upper end face of the steel plate, a limiting groove adapted to the limiting plate is provided at the bottom end of the wear-resistant block, and the high-strength internal hexagon bolt is threadedly connected to the limiting plate.

[0013] As a preferred embodiment of the material buffer device for the discharge port of the present invention, the upper end face of the steel plate is fixedly connected with a positioning boss, and the bottom end of the wear-resistant block is provided with a positioning groove that matches the positioning boss.

[0014] As a preferred embodiment of the material buffer device at the discharge port of the present invention, the material receiving surface of the wear-resistant block has an arc-shaped structure.

[0015] As a preferred embodiment of the material buffer device at the discharge port of the present invention, the wear-resistant block is cast from either high-chromium cast iron or ceramic composite material.

[0016] The beneficial effects of this invention are:

[0017] By using a combination structure of steel plates, cast wear-resistant blocks, and vertical plates, and fixing them together with high-strength hexagonal bolts, the following beneficial effects were achieved: First, the steel plates extend into the inside of the funnel, working in conjunction with the front of the wear-resistant blocks to receive the material flow, effectively isolating the material from direct contact with the funnel body and solving the problem of funnel body wear and tear; second, this structure can form a material accumulation layer on the flow surface, achieving a self-protective effect of "material-on-material," significantly extending the service life of the funnel; finally, the modular connection method facilitates the quick replacement of wear-resistant blocks, greatly reducing downtime and maintenance work caused by funnel wear, lowering the safety risks for maintenance personnel, and improving the production line's operating rate. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is an overall structural diagram of a material buffer device for a feed inlet according to the present invention.

[0020] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A.

[0021] Figure 3This is a three-dimensional structural diagram of the wear-resistant block of the present invention.

[0022] The markings in the diagram are: 1. Feeding funnel; 101. Feeding port; 2. Steel plate; 201. Reinforcing rib plate; 202. Positioning boss; 3. Vertical plate; 4. Wear-resistant block; 401. Positioning groove; 402. Limiting groove; 5. Limiting plate; 6. High-strength internal hex bolt; 7. Belt conveyor. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] Please see Figure 1-3 A material buffer device for a discharge port, comprising:

[0025] The feeding funnel 1 has a feeding port 101 at its bottom end;

[0026] Two belt conveyors 7 are located to the right of the discharge hopper 1 and below the discharge port 101, respectively;

[0027] At least one steel plate 2 is set at the material impact surface of the feeding hopper 1, and the side of the steel plate 2 facing the material flow direction extends horizontally outward into the feeding hopper 1;

[0028] The cast wear-resistant block 4 is located on the upper end face of the steel plate 2 and inside the feeding hopper 1;

[0029] The upright plate 3 is fixedly connected to the wear-resistant block 4 by high-strength internal hex bolts 6.

[0030] In this embodiment: two belt conveyors 7, one located on the right side of the discharge hopper 1 for conveying material into the hopper, and the other located below the discharge port 101 for receiving buffered material. Inside the discharge hopper 1, at the impact surface directly facing the material flow direction, one or more steel plates 2 are vertically or inclinedly arranged. A portion of the steel plate 2 is fixedly connected to the side wall of the discharge hopper 1, and the other portion extends horizontally outward toward the material flow direction into the internal space of the discharge hopper 1.

[0031] A cast wear-resistant block 4 is placed on the upper surface of the steel plate 2 (i.e., the side facing the material impact). This wear-resistant block 4 is located inside the feeding hopper 1 and directly withstands the impact and friction of the material. Simultaneously, a vertical plate 3 is provided, which is fixedly connected to the wear-resistant block 4 by high-strength hexagonal bolts 6. Specifically, the high-strength hexagonal bolts 6 pass through the through holes on the vertical plate 3 and are screwed into the threaded holes on the side of the wear-resistant block 4. The vertical plate 3 and the high-strength hexagonal bolts 6 are then further welded together to prevent loosening. In actual operation, when the material conveyed by the belt conveyor 7 (especially high-hardness, large-particle finished sintered ore) falls from a height into the feeding hopper 1, the material first impacts the cast wear-resistant block 4 and accumulates in front of the wear-resistant block 4 and the steel plate 2. Subsequent material impacts occur on the material accumulation layer, rather than directly impacting the wear-resistant block 4 or the feeding hopper 1, thus greatly reducing wear. When the wear-resistant block 4 wears to a certain extent and needs to be replaced, simply loosen the high-strength internal hex bolt 6 to quickly remove the old wear-resistant block 4 and replace it with a new one, without having to perform any welding or cutting work on the funnel body.

[0032] As a technical optimization of the present invention, a reinforcing rib plate 201 with an inclined arrangement is fixedly connected between the bottom end of the steel plate 2 and the outer wall of the feeding funnel 1.

[0033] In this embodiment, an inclined reinforcing rib plate 201 is fixedly welded between the bottom end of the steel plate 2 (located on the outer or inner side wall of the feeding hopper 1) and the outer wall of the feeding hopper 1. The reinforcing rib plate 201, the steel plate 2, and the outer wall of the feeding hopper 1 together form a triangular support structure, which significantly enhances the structural strength and impact resistance of the steel plate 2, preventing the steel plate 2 from bending or breaking under the long-term impact of large, high-speed materials.

[0034] As a technical optimization of the present invention, a limiting plate 5 is fixedly connected to the upper end of the steel plate 2, and a limiting groove 402 adapted to the limiting plate 5 is opened at the bottom end of the wear-resistant block 4, and a high-strength internal hex bolt 6 is threadedly connected to the limiting plate 5.

[0035] In this embodiment, a limiting groove 402 adapted to the shape and position of the limiting plate 5 is provided at the bottom end of the wear-resistant block 4. During installation, the limiting plate 5 is inserted into the limiting groove 402, and then the high-strength internal hex bolt 6 passes through the limiting plate 5 from the side and is threaded to the nut inside the wear-resistant block 4, thereby firmly locking the wear-resistant block 4 onto the steel plate 2 and preventing it from sliding in the horizontal direction. This achieves precise limiting and fixing of the wear-resistant block 4 in the horizontal direction, effectively preventing the wear-resistant block 4 from lateral displacement or falling off under the impact of materials, and further enhancing the connection stability and operational safety of the device.

[0036] As a technical optimization of the present invention, a positioning boss 202 is fixedly connected to the upper end face of the steel plate 2, and a positioning groove 401 adapted to the positioning boss 202 is opened at the bottom end of the wear-resistant block 4.

[0037] In this embodiment, a positioning boss 202 is fixedly connected to the upper end face of the steel plate 2, and a positioning groove 401 adapted to the positioning boss 202 is provided at the bottom end of the wear-resistant block 4. During installation, the positioning boss 202 is embedded in the positioning groove 401, realizing the quick and accurate installation and positioning of the wear-resistant block 4 on the steel plate 2, avoiding installation misalignment; at the same time, this concave-convex mating structure can bear part of the shear force, reduce the stress on the high-strength internal hexagon bolt 6, and improve the connection strength and impact resistance.

[0038] As a technical optimization of the present invention, the material-facing surface of the wear-resistant block 4 is an arc-shaped structure.

[0039] In this embodiment, the material-facing surface (i.e., the side and top surfaces directly facing the material impact) of the wear-resistant block 4 is designed as an arc-shaped structure. This arc-shaped surface can effectively guide the material to the sides and front, reduce the cutting action of the material at the edge of the wear-resistant block 4, and promote the formation of a stable and uniform material pile in front of the buffer device.

[0040] As a technical optimization of the present invention, the wear-resistant block 4 is cast from either high-chromium cast iron or ceramic composite material.

[0041] In this embodiment, by selecting high-chromium cast iron or ceramic composite material to cast the wear-resistant block 4, the high hardness and high wear resistance of these two materials are fully utilized, enabling them to easily cope with the scouring of materials with high hardness, high temperature and high density, such as finished sintered ore, which greatly improves the service life of the wear-resistant block 4 and reduces the replacement frequency.

[0042] The working principle and usage process of this invention are as follows: When the material conveyed by the upstream belt conveyor 7 falls into the discharge hopper 1 at a certain speed, the material will first directly impact the steel plate 2 located at the impact surface of the hopper and the cast wear-resistant block 4 fixed on its upper end. The wear-resistant block 4 is made of high-chromium cast iron or ceramic composite material, which has extremely high hardness and wear resistance, and can directly withstand the high-speed impact and cutting of the material, effectively isolating the material from the discharge hopper 1 body and avoiding wear on the hopper body;

[0043] Under continuous material impact, because steel plate 2 and wear-resistant block 4 protrude forward into the hopper, some material will remain in front of and above wear-resistant block 4, gradually forming a dense, naturally accumulated material layer of a certain thickness. Subsequently, falling material will primarily impact this already formed material layer, rather than directly impacting wear-resistant block 4 or steel plate 2, achieving an ideal "material-on-material" buffering effect. Simultaneously, the material-facing surface of wear-resistant block 4 is designed with an arc shape, which helps to evenly guide the material to both sides, promoting the stable formation of the material pile and reducing cutting of the wear-resistant block's edge.

[0044] During material impact, the inclined reinforcing ribs 201 on the back of the steel plate 2 form a triangular support structure with the outer wall of the feeding hopper 1, significantly enhancing the bending strength and impact resistance of the steel plate 2. Simultaneously, through the engagement of the limiting plate 5 and the limiting groove 402, the embedded cooperation of the positioning boss 202 and the positioning groove 401, and the welding and fixing of the high-strength internal hexagon bolts 6 to the upright plate 3, the cast wear-resistant block 4 is firmly locked onto the steel plate 2, capable of withstanding complex impact forces from all directions, preventing lateral displacement or detachment, and ensuring long-term operational safety.

[0045] After prolonged use, if the cast wear-resistant block 4 needs to be replaced due to normal wear, no cutting or welding work is required on the main body of the feeding hopper 1. Maintenance personnel simply need to loosen and remove the high-strength hex bolt 6 from the side to remove the worn wear-resistant block 4 from the limiting plate 5 and the positioning boss 202, quickly install the new wear-resistant block 4, and retighten the bolts. The entire replacement process is simple, fast, and safe, greatly reducing downtime and lowering the labor intensity and safety risks of maintenance work.

Claims

1. A material buffer device for a feed inlet, characterized in that, include: The feeding funnel (1) has a feeding port (101) at its bottom end. Two belt conveyors (7) are located to the right of the discharge hopper (1) and below the discharge port (101), respectively; At least one steel plate (2) is provided at the material impact surface of the feeding hopper (1), and the steel plate (2) extends horizontally outward to the feeding hopper (1) on the side facing the material flow direction; The cast wear-resistant block (4) is located on the upper end face of the steel plate (2) and inside the feeding hopper (1); The upright plate (3) is fixedly connected to the wear-resistant block (4) by high-strength internal hex bolts (6).

2. The material buffer device at the discharge port according to claim 1, characterized in that: A reinforcing rib plate (201) is fixedly connected between the bottom end of the steel plate (2) and the outer wall of the feeding hopper (1) in an inclined manner.

3. The material buffer device at the discharge port according to claim 1, characterized in that: The upper end face of the steel plate (2) is also fixedly connected to a limiting plate (5), and the bottom end of the wear-resistant block (4) is provided with a limiting groove (402) that is compatible with the limiting plate (5), and the high-strength internal hex bolt (6) is threadedly connected to the limiting plate (5).

4. The material buffer device at the discharge port according to claim 1, characterized in that: The upper end face of the steel plate (2) is fixedly connected to a positioning boss (202), and the bottom end of the wear-resistant block (4) is provided with a positioning groove (401) that matches the positioning boss (202).

5. A material buffer device for a discharge port according to claim 1, characterized in that: The material-facing surface of the wear-resistant block (4) has an arc-shaped structure.

6. A material buffer device for a discharge port according to claim 1, characterized in that: The wear-resistant block (4) is cast from either high-chromium cast iron or ceramic composite material.

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