Efficient mineral classification equipment

Abstract

The utility model relates to the technical field of coal mine screening, in particular to efficient mineral grading equipment which comprises a base, side plates are fixedly installed on the front side and the rear side of the top of the base, speed reducers are fixedly installed at the middle ends and the right sides of the rear sides of the side plates, and screening shafts are movably installed between the opposite sides of the side plates. The single-side double-speed-reducer powder roller screen solves the problems that an existing powder roller screen is generally driven in a one-way mode, power is small, when a coal mine with the large handling capacity is screened, work is difficult, and dust on the surface of the powder roller screen is inconvenient to clean and needs to be manually cleaned in the screening process, the single-side double-speed reducer is adopted for driving, each screen shaft has enough driving force, and therefore the powder roller screen is driven by the single-side double-speed reducer. The large treatment capacity is guaranteed, the driving speed of the feeding end is high, the driving speed of the discharging end is low, coarse screening is conducted firstly, then fine screening is conducted, the requirement for the large treatment capacity is met, meanwhile, high screening efficiency is guaranteed, and the whole equipment runs stably and is low in failure rate.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine screening, in particular to a highly efficient mineral grading device. Background Art

[0002] Screening equipment (especially vibrating screen) is mainly affected by its large dynamic load, high vibration frequency and large amplitude of the screen body, which are the main reasons affecting the service life of the screening machine and frequent accidents. It is also a global problem. If a roller screen with no dynamic load, no screen vibration and no amplitude can also achieve the process requirements of grading materials with a vibrating screen, then the development space and application scope of the roller screen will be larger and wider. It is believed that with the widespread application and increasing perfection of roller screens, more users and industry insiders will favor and choose this new screening equipment.

[0003] Its working principle is: the roller screen is a working screen surface composed of a series of rotating screen shafts, several screen plates (usually 5-6) are connected in series on the roller, and the adjacent tooth rollers are concave and convex and cross each other. The gap at this time is the screen hole. The number of screen plates and the shape of tooth rollers are completely optimized according to the properties of the material and the processing volume. The roller is installed on a fixed frame (the inclined surface of the frame is usually within an angle of 15 degrees). Due to the rotation of the roller, the material moves, loosens, and turns on the screen plate. The material smaller than the screen hole enters the bottom of the screen, and the material on the screen gradually moves to the overflow point. Therefore, the material is graded.

[0004] The current powder roller screen usually adopts one-way drive and has low power. It is more laborious to screen large-capacity coal mines. In addition, the dust on the surface is not convenient to clean during the screening process and needs to be cleaned manually, which wastes unnecessary physical strength. In order to solve the above technical problems, we have designed an efficient mineral grading equipment. Utility Model Content

[0005] The purpose of the utility model is to provide an efficient mineral grading equipment with the advantages of large processing capacity and convenient dust cleaning, which solves the problem that the current powder roller screen usually adopts a one-way drive with small power, and it is more laborious to screen large-capacity coal mines. In addition, during the screening process, the dust on the surface is not convenient to clean and needs to be cleaned manually.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an efficient mineral grading equipment, comprising a base, side panels are fixedly installed on the front and rear sides of the top of the base, reducers are fixedly installed on the middle end and right side of the rear side of the side panels, screen shafts are movably installed between the opposite sides of the side panels, the front and rear ends of the screen shaft pass through the outside of the side panels, sprockets are fixedly sleeved on the front and rear sides of the screen shaft surface and the surface of the reducer, chains are transmission-connected between the surfaces of the sprockets, a sieve disc is fixedly sleeved on the surface of the screen shaft, and a sweeper is fixedly installed on the opposite side of the side panel.

[0007] Preferably, a material sliding plate is fixedly connected between the left sides of the opposite side of the side plate, and the material sliding plate is arranged obliquely.

[0008] Preferably, a bearing seat is fixedly mounted on the surface of the side plate, and the screen shaft is fixedly mounted in the inner cavity of the bearing seat.

[0009] Preferably, the number of the sweepers is three, and they are fixedly installed on the left and right sides and the middle end above the sieve plate respectively.

[0010] Preferably, the cleaner includes a fixed plate, which is fixedly installed between the opposite sides of the two side plates. A cleaning brush is fixedly connected to the bottom of the fixed plate, and the cleaning brush is located between the gaps of the two sieve plates. The cleaner is welded with wear-resistant steel plates and angle steels.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model adopts a single-sided double reducer for driving, so that each screen shaft has sufficient driving force, which provides a guarantee for large processing capacity. The driving speed at the feeding end is high, and the driving speed at the discharging end is low. Coarse screening is performed first and then fine screening. It not only meets the requirements of large processing capacity, but also ensures a high screening efficiency. The overall equipment runs smoothly with a low failure rate.

[0013] 2. The utility model provides a specially designed sweeper, which is located under the sieve plate and fixed to the side plate with bolts, so that the materials adhering to the sieve plate can be removed and cleaned. The sweeper is welded with wear-resistant steel plates and angle steels, and the structure is easy to repair and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0016] Figure 3 It is a side structural schematic diagram of the utility model.

[0017] In the figure: 1. base; 2. slide plate; 3. side plate; 4. bearing seat; 5. chain; 6. reducer; 7. sprocket; 8. screen shaft; 9. screen plate; 10. sweeper. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 3, an efficient mineral grading equipment, including a base 1, side plates 3 are fixedly installed on the front and rear sides of the top of the base 1, and reducers 6 are fixedly installed on the middle end and right side of the rear side of the side plate 3. By setting two reducers 6, a two-machine multi-axis chain transmission is adopted, that is, the two reducers 6 drive all the running screen shafts 8 through the chain 5, so that the screen shaft 8 rotates to form a rolling working screen surface, and the screen shaft 8 is movably installed between the opposite sides of the side plates 3. The front and rear ends of the screen shaft 8 penetrate the outer side of the side plates 3. The front and rear sides of the surface of the screen shaft 8 and the surface of the reducer 6 are fixedly sleeved with sprockets 7, and the surfaces of the sprockets 7 are connected by chains 5. The surface of the screen shaft 8 is fixedly sleeved with a sieve plate 9, and the sieve plate 9 can be replaced to change the screening particle size to meet different working conditions. The sieve plate 9 is made of high manganese casting, has good wear resistance, and its wear resistance is 2-3 times higher than that of ordinary cast steel parts, which increases the service life of wearing parts. A sweeper 10 is fixedly installed on the opposite side of the side plate 3;

[0019] See also Figure 1 A material sliding plate 2 is fixedly connected between the left side of the side plate 3 on the opposite side, and the material sliding plate 2 is inclined;

[0020] See also Figure 2 The surface of the side plate 3 is fixedly installed with a bearing seat 4. The reducer 6 and the bearing seat 4 are both of high-quality brands. The screen shaft 8 is fixedly installed in the inner cavity of the bearing seat 4. The screened object moves along the screen surface in a single forward direction. The screen plate 9 can force the material to move forward, with a high screening rate, and the block material is not easily crushed for the second time.

[0021] See also Figure 2 , there are three cleaners 10, which are fixedly installed on the left and right sides and the middle end above the sieve plate 9;

[0022] See also Figure 2 The sweeper 10 includes a fixed plate, which is fixedly installed between the opposite sides of the two side plates 3. A cleaning brush is fixedly connected to the bottom of the fixed plate, and the cleaning brush is located between the gaps of the two sieve plates 9. The sweeper 10 is welded with wear-resistant steel plates and angle steels. The device as a whole adopts a centralized automatic lubrication system, which is convenient for maintenance and prolongs the service life of the roller screen. The overall structure adopts an integrated structure, which occupies a small space and can be disassembled for easy underground transportation. It is impact-resistant, has low vibration and noise, has a simple structure, reduces costs, is economical and applicable, and has no effect on the screening of wet or sticky materials. It can be self-cleaned through the movement between the sieve plates 9, is not easy to block the screen, and the screening material is smooth.

[0023] When in use, the sprocket 7 on its surface is driven to rotate through the reducer 6, and the chain 5 is used to drive the sprocket 7 on the surface of the screen shaft 8 to rotate, thereby driving the screen shaft 8 to rotate, and the sieve plate 9 on its surface is rotated. The material passes through the sliding plate 2 and falls to the surface of the sieve plate 9. The driving speed of the feeding end is controlled to be high, and the driving speed of the discharging end is controlled to be low. The coarse screen is first performed and the fine screen is then performed. Then the material stuck on the sieve plate 9 is cleared by the sweeper 10.

[0024] In summary: this efficient mineral grading equipment, through the cooperation of the base 1, the chute plate 2, the side plate 3, the bearing seat 4, the chain 5, the reducer 6, the sprocket 7, the screen shaft 8, the screen plate 9 and the sweeper 10, solves the problem that the current powder roller screen usually adopts a one-way drive, has low power, and is more laborious when screening large-capacity coal mines. In addition, during the screening process, the dust on the surface is inconvenient to clean and needs to be cleaned manually.

Claims

1. An efficient mineral classification device, comprising a base (1), characterized in that: Side plates (3) are fixedly mounted on both the front and rear sides of the top of the base (1); a reducer (6) is fixedly mounted on the middle end and right side of the rear side of the side plate (3); a screen shaft (8) is movably mounted between the opposite sides of the side plates (3); both the front and rear ends of the screen shaft (8) extend through the outer side of the side plates (3); sprockets (7) are fixedly mounted on the front and rear sides of the surface of the screen shaft (8) and the surface of the reducer (6); a chain (5) is transmission-connected between the surfaces of the sprockets (7); a screen plate (9) is fixedly mounted on the surface of the screen shaft (8); and a sweeper (10) is fixedly mounted on the opposite side of the side plate (3).

2. An efficient mineral classification device according to claim 1, characterized in that: A material sliding plate (2) is fixedly connected between the left sides of the opposite side of the side plate (3), and the material sliding plate (2) is arranged in an inclined manner.

3. The efficient mineral classification equipment according to claim 1, characterized in that: A bearing seat (4) is fixedly mounted on the surface of the side plate (3), and the screen shaft (8) is fixedly mounted in the inner cavity of the bearing seat (4).

4. The efficient mineral classification equipment according to claim 1, characterized in that: The number of the sweepers (10) is three, and they are respectively fixedly installed on the left and right sides and the middle end above the sieve plate (9).

5. The efficient mineral classification equipment according to claim 4 is characterized in that: The cleaner (10) comprises a fixing plate, which is fixedly installed between the two opposite sides of the side plates (3). A cleaning brush is fixedly connected to the bottom of the fixing plate, and the cleaning brush is located between the gaps of the two sieve plates (9). The cleaner (10) is welded from wear-resistant steel plates and angle steels.

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