Screening device for steel balls of ball mill

Abstract

The utility model discloses a screening device for steel balls of a ball mill. Belongs to the technical field of ball mill steel ball screening. According to the technical key points, the vibrating screen comprises a vibrating rack, a sliding groove is obliquely formed in the vibrating rack, and a filtering screen plate is arranged in the sliding groove; the filtering sieve plate is inclined towards one side along the length direction; a feeding hopper is arranged on the vibrating rack on one side of the upper end of the sliding chute, a feeding pipe is arranged at the bottom of one side of the inclined upper end of the filtering sieve plate, of the feeding hopper, and material collecting boxes are arranged on two sides of the lower end of the feeding hopper; the utility model aims to provide the screening device for the steel balls of the ball mill, which is simple in structure and multifunctional in screening; the screening device is used for screening unqualified steel balls after repeated use of the ball mill.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screening device more specifically, especially relates to a screening device for ball mill steel ball. BACKGROUND

[0002] The steel ball in ball mill will appear different degree of wear and tear after long time use, when the worn steel ball is more, will influence the efficiency and quality of ball grinding, therefore needs to replace the steel ball, in actual production in order to save cost, usually the steel ball is screened and separated, and the unworn steel ball is picked out to continue to use.

[0003] The existing screening process can only screen the small size steel ball, and there are still some irregular shaped steel balls due to wear in the size qualified steel balls, which will still affect the efficiency and quality of ball grinding. SUMMARY

[0004] The utility model discloses to aim at the deficiency of prior art, provide a kind of structure simple, multifunctional screening of ball mill steel ball screening device.

[0005] The utility model discloses a kind of ball mill steel ball screening devices, including vibration rack, the vibration rack is inclinedly provided with chute, and filter screen plate is equipped in chute;The filter screen plate is inclined to one side along length direction;Feed hopper is equipped on the vibration rack at one side of upper end of chute, and the feed hopper is located the bottom of filter screen plate inclined upper end side and is equipped with feed pipe, and feed hopper lower end both sides are equipped with material collecting box.

[0006] In the ball mill steel ball screening device described above, the included angle α between the chute and the horizontal plane is 3-10°, and the included angle β between the filter screen plate and the inner bottom surface of the chute is 3-6°.

[0007] In the ball mill steel ball screening device described above, a gentle portion is provided on the filter screen plate below the feed pipe, the included angle γ between the gentle portion and the horizontal plane is 1-2°, and an inclined acceleration section is provided at the end of the gentle portion away from the feed pipe.

[0008] In the ball mill steel ball screening device described above, a Y-shaped guide portion is integrally formed at the lower end of the filter screen plate, a Y-shaped baffle is provided on the filter screen plate and matched with the Y-shaped guide portion, and the material collecting boxes are respectively arranged below the Y-shaped guide portions.

[0009] In the ball mill steel ball screening device described above, the chute and the filter screen plate are both trapezoidal with upper width and lower narrowness, mounting bosses are provided on the inner walls of both sides of the chute, and the filter screen plate is placed on the mounting bosses.

[0010] In the above-mentioned ball mill steel ball screening device, a number of mounting blocks are provided on the inner wall of the slide groove above the mounting boss, screws are threadedly connected to the mounting blocks, and rubber pads that cooperate with the filter screen plate are provided at the lower end of the screws.

[0011] With the above-mentioned structure, as the steel balls slide down the filter screen plate, the smaller steel balls fall into the lower chute through the filter screen plate, while the larger steel balls, due to the filter screen plate being tilted to one side along its length, will roll quickly along the diagonal, while the irregular steel balls will slide down in a straight line to the other side. This effectively separates the severely worn steel balls, ensuring the efficiency and quality of the ball mill. Attached Figure Description

[0012] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 4 This is a schematic diagram of the slide groove of this utility model;

[0017] Figure 5 This is a partial structural diagram of point A of this utility model.

[0018] Figure 6 This is a rear view structural diagram of the slide groove of this utility model.

[0019] In the diagram: 1. Vibrating frame; 2. Slide chute; 3. Filter screen plate; 4. Feed hopper; 5. Feed pipe; 6. Collection box; 7. Leveling section; 8. Inclined acceleration section; 9. Y-shaped outlet section; 10. Y-shaped baffle; 11. Mounting boss; 12. Mounting block; 13. Screw; 14. Rubber pad. Detailed Implementation

[0020] See Figures 1-4As shown, this utility model discloses a ball mill steel ball screening device, comprising a vibrating frame 1, on which a chute 2 is inclinedly arranged, and a filter screen plate 3 is provided within the chute 2; the filter screen plate 3 is inclined to one side along its length and the included angle β between it and the bottom surface of the chute 2 is 3-6°; a feed hopper 4 is provided on the vibrating frame 1 located on the upper side of the chute 2, and a feed pipe 5 is provided at the bottom of the feed hopper 4 on the inclined upper side of the filter screen plate 3; and collection boxes 6 are provided on both sides of the lower end of the feed hopper 4. The vibrating frame is prior art, and its specific structure is common knowledge to those skilled in the art, and will not be described in detail here.

[0021] As the steel balls slide downwards on the filter screen plate, smaller steel balls fall into the chute below, while larger steel balls, due to the filter screen plate tilting to one side along its length, will roll quickly along the diagonal, while irregular steel balls will slide in a straight line to the other side. This effectively separates severely worn steel balls, ensuring the efficiency and quality of the ball mill.

[0022] In this embodiment, the angle α between the chute 2 and the horizontal plane is 3-10°, and the angle β between the filter screen plate 3 and the inner bottom surface of the chute 2 is 3-6°. Multiple experiments have shown that when the inclination angles of the chute and the filter screen plate are within the above range, the rounded steel balls can quickly roll to one side of the filter screen plate as they roll down, while the irregular steel balls roll more slowly and remain on the other side, effectively separating the irregular steel balls.

[0023] In this embodiment, a gentle slope 7 is provided on the filter screen plate 3 located below the feed pipe 5, and the angle γ between the gentle slope 7 and the plane is 1-2°; an inclined acceleration section 8 is provided at the end of the gentle slope 7 away from the feed pipe 5. With this structure, when the steel ball falls on the filter screen plate, it first lands on the gentle slope with a smaller slope. At this time, the irregular steel ball is difficult to roll, while the round steel ball can quickly roll diagonally along the slope. When the round steel ball reaches the inclined acceleration section, the rolling speed will increase, which can effectively improve the screening effect.

[0024] In this embodiment, a Y-shaped outlet 9 is integrally formed at the lower end of the filter screen plate 3. A Y-shaped baffle 10 that cooperates with the Y-shaped outlet 9 is provided on the filter screen plate 3, and the collection boxes 6 are respectively arranged below the Y-shaped outlet 9. The straight section in the middle of the Y-shaped baffle blocks the slower-falling irregular steel balls, further improving the screening effect. The blocking length of the Y-shaped baffle can be determined based on a limited number of experiments. The Y-shaped outlet guides round and irregular steel balls to both sides of the chute for easy placement of the collection boxes for collection.

[0025] In this embodiment, preferably, both the chute 2 and the filter screen plate 3 are trapezoidal, wider at the top and narrower at the bottom. Mounting bosses 11 are provided on the inner walls of both sides of the chute 2, and the filter screen plate 3 is placed on the mounting bosses 11. With this structure, the filter screen plate can be directly placed on the mounting bosses, and due to its wider-than-narrower shape, it will fit snugly against the inner wall of the chute, preventing it from falling off. This effectively reduces installation steps and facilitates assembly and disassembly.

[0026] More preferably, a plurality of mounting blocks 12 are provided on the inner wall of the slide groove 2 above the mounting boss 11. Screws 13 are threaded onto the mounting blocks 12, and rubber pads 14 that cooperate with the filter screen plate 3 are provided at the lower end of the screws 13. By setting the screws and rubber pads to press the filter screen plate, vibration is prevented from causing the filter screen plate to bounce up. The rubber pads cooperate with the inclined filter screen plate to ensure installation.

[0027] During operation, steel balls taken from the ball mill are fed into the feed hopper. The steel balls fall through the feed pipe onto the flat section at the top of the filter screen plate and roll down the filter screen plate under the vibration of the vibrating frame. Steel balls that are too small fall through the filter screen plate into the chute below. Larger, rounder steel balls will roll quickly along the diagonal to the Y-shaped outlet located diagonally opposite the feed pipe and fall into the collection box. Irregular steel balls are blocked by the Y-shaped baffle when they slide down to the bottom and roll into the Y-shaped outlet located on the same side of the feed pipe and fall into the collection box.

[0028] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.

Claims

1. A screening device for steel balls in a ball mill, comprising a vibrating frame (1), characterized in that, The vibrating frame (1) is inclinedly provided with a chute (2), and a filter screen plate (3) is provided in the chute (2); the two ends of the filter screen plate (3) in the length direction are inclined to cooperate with the chute (2), and the filter screen plate (3) is inclined to one side along the length direction; a feed hopper (4) is provided on the vibrating frame (1) located on the upper side of the chute (2), and a feed pipe (5) is provided at the bottom of the feed hopper (4) located on the inclined upper side of the filter screen plate (3), and a collection box (6) is provided on both sides of the lower end of the feed hopper (4); The filter screen plate (3) has an integrally formed Y-shaped outlet (9) at the lower end. A Y-shaped baffle (10) that cooperates with the Y-shaped outlet (9) is provided on the filter screen plate (3). The collection boxes (6) are respectively located below the Y-shaped outlet (9).

2. The ball mill steel ball screening device according to claim 1, characterized in that... The angle α between the chute (2) and the horizontal plane is 3-10°, and the angle β between the filter screen plate (3) and the inner bottom surface of the chute (2) is 3-6°.

3. The ball mill steel ball screening device according to claim 1, characterized in that, A smooth section (7) is provided on the filter screen plate (3) located below the feed pipe (5), and the angle γ between the smooth section (7) and the plane is 1-2°; an inclined acceleration section (8) is provided at the end of the smooth section (7) away from the feed pipe (5).

4. The ball mill steel ball screening device according to claim 1, characterized in that, Both the chute (2) and the filter screen plate (3) are trapezoidal with a wider top and a narrower bottom. Mounting bosses (11) are provided on the inner walls of both sides of the chute (2), and the filter screen plate (3) is placed on the mounting bosses (11).

5. A ball mill steel ball screening device according to claim 4, characterized in that, The inner wall of the slide groove (2) above the mounting boss (11) is provided with several mounting blocks (12), and screws (13) are threaded on the mounting blocks (12). A rubber pad (14) that cooperates with the filter screen plate (3) is provided at the lower end of the screws (13).

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