A mine crusher feed hopper

Abstract

This utility model relates to a feeding hopper for a mining crusher. It includes a left discharge platform, a right discharge platform, and a feeding hopper body. The feeding hopper body is composed of a left feeding plate, a right feeding plate, two baffles, and a support assembly. Both feeding plates are equipped with a buffer structure, which consists of a buffer trough, a pusher plate, and a ejector device. The buffer trough is recessed relative to either the left or right feeding plate. The pusher plate is rotatably connected to the upper part of the buffer trough, and its back side is hinged to the ejector device. This utility model creates multiple buffer troughs during ore rolling. The buffer troughs contain loose, soft gravel, providing an excellent buffer zone. Large-sized ore is significantly decelerated after rolling into the buffer troughs. Simultaneously, because the gravel absorbs a large amount of impact energy, the probability of direct collision between the ore and the crusher is reduced, significantly decreasing the wear rate of the equipment and greatly reducing the maintenance frequency.

Description

Technical Field

[0001] This utility model relates to a mining crusher, and more particularly to a mining crusher feed hopper. Background Technology

[0002] Mining crushers are characterized by their large crushing ratio, uniform product particle size, simple structure, reliable operation, easy maintenance, and economical operating costs. They are widely used in numerous sectors, including mining, metallurgy, building materials, highways, railways, water conservancy, and chemical industries. Crusheres are typically equipped with a feed hopper to efficiently transport ore materials into the crusher for crushing. Because the ore particles before crushing are relatively large, and large-sized ores have significant weight, the free rolling of these large ores within the feed hopper generates considerable kinetic energy. During this rolling process, these ores directly collide with the feed hopper and the crusher, accelerating the wear and tear on the equipment.

[0003] Existing patent application number: CN201720082611.4 A jaw crusher with a buffer feed hopper includes a jaw crusher and a buffer feed hopper. The buffer feed hopper is connected to the upper part of the jaw crusher via a flange. The buffer feed hopper includes a hopper body, a buffer assembly, and wear-resistant liners. There are two sets of buffer assemblies: the first set is arranged on the inner plate of the hopper body's material-facing surface, and the second set is arranged below the inner plate of the hopper body opposite to the first set. Wear-resistant liners are arranged on the inner plates on both sides of the material-facing surface of the hopper body. This utility model buffers the feed ore and allows the stone to fall evenly into the jaw crusher, effectively reducing the wear of the moving jaw plate and saving equipment maintenance costs.

[0004] The aforementioned patent addresses the problem by installing a buffer baffle inside the feed hopper to reduce the drop height difference of the ore. However, the buffer baffle in the patent is directly fixed inside the feed hopper. When blockage occurs inside the feed hopper, the buffer baffle will hinder the workers from clearing the blockage, resulting in poor flexibility. Furthermore, as a vulnerable component that directly bears the impact of the ore, replacing the buffer baffle, which is directly fixed inside the feed hopper, is also quite troublesome and not conducive to subsequent maintenance. Summary of the Invention

[0005] This utility model provides a feeding hopper for a mining crusher, which solves the problems of easy blockage and difficulty in replacing buffer baffles in the prior art.

[0006] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a feeding hopper for a mining crusher, comprising: a left unloading platform, a right unloading platform, and a feeding hopper body built between the two unloading platforms. The feeding hopper body is composed of a left feeding plate, a right feeding plate, two baffles, and a support assembly. Both feeding plates on the left and right sides are inclined, making the inner cavity of the feeding hopper funnel-shaped with a wider top and a narrower bottom. Both feeding plates are provided with buffer structures, and generally two or more are provided, depending on the actual size. The buffer structure is composed of a buffer groove, a pusher plate, and a push-out device. The buffer groove is recessed relative to the left or right feeding plate. The pusher plate is rotatably connected to the upper part of the buffer groove, and the back side of the pusher plate is hinged to the push-out device.

[0007] The left and right unloading platforms of this invention are used for unloading mine cars, allowing ore to slide directly from the mine car into the feed hopper. The sliding ore is divided into large-sized ore, medium-sized ore, and ore fragments. These different sized ore pieces slide at different speeds within the feed hopper. Ore fragments, affected by mutual friction, generally slide along the surfaces of the left and right feed plates. Therefore, ore fragments easily fill the buffer troughs along the way. The larger the ore, the less affected it is by friction, and thus the easier it is to roll. However, because multiple buffer troughs are formed during the rolling process, the accumulated gravel in these troughs, with its soft texture, acts as an excellent buffer zone. Large-sized ore slows down significantly after rolling into the buffer troughs. At the same time, because the gravel absorbs a large amount of impact energy, the probability of direct collision between the device and the ore is reduced, significantly decreasing the wear rate of the equipment and greatly reducing the maintenance frequency. To prevent ore from sinking into the buffer trough and severely hindering the ore feeding speed, this invention also includes a top-out device and a pusher plate, which can periodically push out the accumulated material in the buffer trough.

[0008] Furthermore, the buffer trough is composed of a top plate, a bottom plate, a rear baffle, and side baffles. A drainage hole is formed between the bottom plate and the rear baffle, and the pusher plate is connected below the bottom plate. The pusher plate is a movable part, so a gap is formed between the pusher plate and the bottom plate and the side baffles. Fine slag can enter the area between the rear baffle and the pusher plate through the gap. Therefore, this utility model is provided with a drainage hole for discharging slag.

[0009] Furthermore, anti-collision blocks are fixed to the outer edge of the base plate. The area where the anti-collision blocks are installed is a concentrated area of ​​ore collision, and therefore, anti-collision blocks made of high-strength alloy steel are used to protect this area.

[0010] Therefore, this utility model has the following characteristics compared with the prior art: 1. This utility model forms multiple buffer troughs during the ore rolling process. The buffer troughs are filled with loose gravel, which is an excellent buffer zone. Large-sized ore slows down significantly after rolling into the buffer troughs; 2. At the same time, since the gravel absorbs a large amount of impact energy, the probability of this utility model directly colliding with the ore is reduced, the wear rate of the equipment is significantly reduced, and the maintenance frequency is greatly reduced. Attached Figure Description

[0011] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Appendix Figure 2 It is attached Figure 1 Enlarged view of part A;

[0013] Appendix Figure 3 It is attached Figure 2 A schematic diagram of the structure when the pusher plate is ejected;

[0014] Appendix Figure 4 This is a schematic diagram of the structure of Example 2. Detailed Implementation

[0015] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Example 1: See Figure 1 , Figure 2 and Figure 3A feeding hopper for a mining crusher includes: a left unloading platform 100, a right unloading platform 200, and a feeding hopper body 300 built between the two unloading platforms. The feeding hopper body is composed of a left feeding plate 10, a right feeding plate 20, two baffles 30, and a support assembly 40. Both feeding plates on the left and right sides are inclined, with an inclination angle between 40° and 60°, making the inner cavity of the feeding hopper funnel-shaped with a wider top and a narrower bottom. Both feeding plates are provided with a buffer structure, and there are two of them. The buffer structure is composed of a buffer groove 50, a pusher plate 60, and a pusher device 70. The buffer groove is recessed relative to the left or right feeding plate. The pusher plate is rotatably connected to the upper part of the buffer groove, and the back side of the pusher plate is hinged to the pusher device.

[0018] In this embodiment, the left and right unloading platforms are used for unloading from the mine cars. This allows the ore to slide directly from the mine cars into the feed hopper. The sliding ore is divided into large-sized ore, medium-sized ore, and ore fragments. These different sized ore pieces slide at different speeds within the feed hopper. Ore fragments, affected by mutual friction, generally slide along the surfaces of the left and right feed plates. Therefore, ore fragments easily fill the buffer troughs along the way. Larger ore pieces are less affected by friction and thus roll more easily. However, because multiple buffer troughs are formed during the rolling process, the fragments within these troughs are soft and act as excellent buffer zones. Larger ore pieces slow down significantly after rolling into the buffer troughs. Simultaneously, because the fragments absorb a large amount of impact energy, the probability of direct collision with the ore is reduced in this embodiment, significantly reducing the wear rate of the equipment and greatly decreasing the maintenance frequency. To prevent ore from sinking into the buffer trough and severely hindering the ore feeding speed, this embodiment also includes an ejector device and a pusher plate, which can periodically push out the accumulated material in the buffer trough.

[0019] See Figure 2 The buffer trough consists of a top plate 51, a bottom plate 52, a rear baffle 53, and a side baffle 54. A drain hole 55 is formed between the bottom plate and the rear baffle. A pusher plate is connected below the bottom plate, and the ejection device is specifically a hydraulic cylinder hinged to the rear baffle. The pusher plate is a movable part, so there are gaps between the pusher plate and the bottom plate and the side baffle. Fine slag can enter the area between the rear baffle and the pusher plate through the gaps. Therefore, this embodiment is provided with a drain hole for discharging slag.

[0020] See Figure 2 The bottom plate is an inclined flat plate, and the bottom of the pusher plate is integrally connected to an arc plate 61 with the same radius.

[0021] See Figure 3 The outer edge of the base plate is fixed with anti-collision blocks 56. The area where the anti-collision blocks are installed is a concentrated area of ​​ore collision, so high-strength alloy steel anti-collision blocks are used to protect this area.

[0022] See Figure 1The back of the left feed plate is provided with several left ribs 11; the back of the right feed plate is provided with several right ribs 21, which serve to strengthen the structure.

[0023] See Figure 1 A sensor mounting bracket 80 is provided in the upper middle area of ​​the two baffle plates. An infrared liveness sensor 81 is mounted on the mounting bracket. The detection range of the infrared liveness sensor covers the feed hopper and parts of the left and right unloading platforms near the feed hopper. The infrared liveness sensor can perform real-time liveness detection in the working area of ​​this invention. Personnel are prohibited from entering this area; if personnel enter, the infrared liveness sensor will be triggered, thus issuing an alarm.

[0024] Example 2: See Figure 4 The difference between this and Example 1 is that the base plate is an arc plate, the center of the arc is the rotation axis of the pusher plate, and the bottom of the pusher plate is close to the base plate.

[0025] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A feeding hopper for a mining crusher, characterized in that, include: The system includes a left unloading platform, a right unloading platform, and a feeding hopper built between the two unloading platforms. The feeding hopper consists of a left feeding plate, a right feeding plate, two baffle plates, and a support assembly. Both feeding plates on the left and right sides are inclined, making the inner cavity of the feeding hopper funnel-shaped, wider at the top and narrower at the bottom. Both feeding plates are equipped with a buffer structure, which consists of a buffer groove, a pusher plate, and an ejector device. The buffer groove is recessed relative to the left or right feeding plate. The pusher plate is rotatably connected to the upper part of the buffer groove, and the back side of the pusher plate is hinged to the ejector device.

2. The feed hopper of the mining crusher according to claim 1, characterized in that: The buffer trough is composed of a top plate, a bottom plate, a rear baffle, and a side baffle. A leakage hole is formed between the bottom plate and the rear baffle. The pusher plate is connected to the bottom plate.

3. The feed hopper of the mining crusher according to claim 2, characterized in that: The base plate is an inclined flat plate, and the bottom of the pusher plate is integrally connected to an arc-shaped plate of equal radius.

4. The feed hopper of the mining crusher according to claim 2, characterized in that: The base plate is an arc plate, with the center of the arc being the rotation axis of the pusher plate, and the bottom of the pusher plate is close to the base plate.

5. The feed hopper of the mining crusher according to claim 2, characterized in that: The outer edge of the base plate is fixed with anti-collision blocks.

6. The feed hopper of the mining crusher according to claim 1, characterized in that: The back of the left feed plate is provided with several left-side ribs; the back of the right feed plate is provided with several right-side ribs.

7. The feed hopper of the mining crusher according to claim 1, characterized in that: A sensor mounting bracket is provided in the upper middle area of ​​the two baffle plates. An infrared liveness sensor is provided on the sensor mounting bracket. The detection range of the infrared liveness sensor covers the feed hopper and the portion of the left and right unloading platforms near the feed hopper.

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