Grass root cleaning device of trough type ore washer

Abstract

The utility model discloses a grass root cleaning device of a trough type ore washer, which comprises an overflow trough, a screening funnel, a slag separating screen, a conveying device and an inclined guide plate, and the conveying device is positioned below a discharge hole of the slag separating screen; a screen is arranged in the screening funnel in the cross section direction, one end of the overflow groove is communicated with an overflow opening of the groove type ore washer, and the other end of the overflow groove is communicated with the upper portion of the screen. The flow guide plate is arranged in the screening funnel, the upper end part of the flow guide plate is connected with the screen, a gap is formed between the lower end part of the flow guide plate and the side wall of the screening funnel, and the screen surface of the slag separation screen is arranged below the gap; the bottom of the screening funnel and the bottom of the slag separation sieve are both communicated with a chute funnel, and a discharge port of the chute funnel is communicated with a slurry pipe. The cleaning device solves the technical problem that grass roots and other impurities generated in the ore washing process are difficult to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment for the ore washing process in mines, and particularly relates to a grass root cleaning device for a trough type ore washing machine. Background Art

[0002] At present, the ore washing process of mining companies mainly feeds materials through a heavy plate feeder, and uses a cylindrical ore washing machine and a trough type ore washing machine to wash the mud and impurities of bauxite to obtain clean ore for coarse and fine crushing. During the process of washing the ore, a large amount of grass roots, weathered residual ore, and mud balls need to be manually removed with a shovel, and then manually transported to the grass root yard by a trolley. Due to the long-term manual operation of the post operators in the process, the labor intensity is high and the operation efficiency is low, which affects the production capacity and ore washing quality of the entire ore washing process. Content of the Utility Model

[0003] Aiming at the existing technical problems, the utility model aims to provide a grass root cleaning device for a trough type ore washing machine, which can solve the technical problem that it is difficult to remove impurities such as grass roots generated during the ore washing process.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A grass root cleaning device for a trough type ore washing machine, characterized in that it includes an overflow trough, a screening funnel, a slag separation screen, a conveying device, and a diversion plate arranged obliquely. The conveying device is located below the discharge port of the slag separation screen; a screen is arranged in the screening funnel along the cross-sectional direction. One end of the overflow trough is communicated with the overflow port of the trough type ore washing machine, and the other end is communicated with the upper part of the screen; the diversion plate is arranged in the screening funnel. The upper end of the diversion plate is connected to the screen, and there is a gap between the lower end of the diversion plate and the side wall of the screening funnel. The screen surface of the slag separation screen is arranged below this gap; the bottoms of the screening funnel and the slag separation screen are both communicated with a chute funnel, and the discharge port of this chute funnel is communicated with a mud pipe.

[0006] When the cleaning device of the present application is in use, the mud water generated during ore washing in the trough type ore washing machine flows into the overflow trough through the overflow port. Under the guiding action of the overflow trough, the mud water enters the screen in the screening funnel. Some small-particle substances in the mud water flow through the screen holes on the screen into the chute funnel, and the remaining mud water flows into the screen surface of the slag separation screen through the diversion plate. When the slag separation screen works, the grass roots and sundries in the mud water run forward and enter the conveying device to be transported to the grass root yard. And the small-particle substances in the mud water enter the chute funnel through the screen holes on the screen surface of the slag separation screen, and are mixed with the mud water in the screening funnel and then enter the mud pipe. The grass root cleaning device of the trough type ore washing machine of the utility model automatically removes the grass roots, sundries, and organic substances in the mud water generated during ore washing, and transports them to the grass root yard through the conveying device. Compared with manual removal of grass roots, it greatly saves manpower and the removal effect, and is applicable to the ore washing process of bauxite ore.

[0007] Preferably, a plurality of the trough type ore washing machines are provided, and the plurality of trough type ore washing machines are arranged along the length direction of the overflow trough. There is a height difference between the overflow ports of two adjacent trough type ore washing machines, and the trough type ore washing machine closer to the screening funnel side is located at a lower position.

[0008] Preferably, the overflow trough is provided with an inclination angle along the length direction, and the screening funnel is located at the foot of the slope of the overflow trough.

[0009] Preferably, the end of the overflow trough closer to the screening funnel side is provided with a flared structure.

[0010] Preferably, the screen is of a rectangular structure, the overflow trough is connected to the short side of the screen, and the width of the overflow trough is equal to the length of the short side of the screen.

[0011] Preferably, the guide plate is connected to the long side of the screen, and the width of the guide plate is smaller than the length of the long side of the screen. The guide plate is arranged on the side away from the overflow trough. The slurry water enters the screening funnel through the overflow trough, turns 90° and then enters the screen surface of the slag separation screen through the guide plate. Setting a 90° turning angle can buffer the flow rate of the slurry water.

[0012] Preferably, a vibrator is provided on the slag separation screen.

[0013] Preferably, the conveying device is a belt conveyor.

[0014] Preferably, the bottom plate of the chute funnel is provided with an inclination angle, and the slurry pipe is located at the foot of the slope of the bottom plate.

[0015] Specifically, the outer end of the slurry pipe is communicated with the thickening tank.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The grass root cleaning device of the trough type ore washing machine of the present utility model automatically removes grass roots, sundries and organic matters in the slurry water generated by ore washing, and conveys them to the grass root yard through the conveying device. Compared with manual removal of grass roots, it greatly saves manpower and has a better cleaning effect, and is applicable to the ore washing process of bauxite ore. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the grass root cleaning device of the trough type ore washing machine of the present utility model;

[0018] Figure 2 is Figure 1 the schematic structural diagram of the trough type ore washing machine in

[0019] Figure 3 is Figure 1 the connection structural diagram of the screening funnel, the overflow trough and the slag separation screen in

[0020] Figure 4 is Figure 1 the left view structural schematic diagram of

[0021] In the figure

[0022] 1 - overflow tank, 2 - screening funnel, 201 - screen mesh, 3 - slag separation screen, 4 - conveying device, 5 - trough type ore washer, 6 - deflector, 7 - chute funnel, 8 - vibrator. Specific embodiments

[0023] The following will describe the present utility model in detail with reference to the accompanying drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. For the convenience of narration, words such as "upper", "lower", "left", and "right" as used hereinafter only indicate the same directions as the upper, lower, left, and right directions of the accompanying drawings themselves, and do not limit the structure.

[0024] As Figure 1 shown, the grass root cleaning device of the trough type ore washer in this embodiment includes an overflow tank, a screening funnel, a slag separation screen, and a conveying device. The model of the slag separation screen is ZDS1230, and the conveying device uses a grass root belt conveyor. The grass root cleaning process flow of bauxite is as follows: Bauxite enters the cylindrical ore washer for screening and washing → Ore smaller than 50 mm is produced → Enter the trough type ore washer for scrubbing to obtain qualified washed ore → The slurry water generated during ore washing passes through the tail of the trough washer and is connected to the overflow tank 1 → The overflow tank 1 converges and enters the screening funnel 2 → After the screening funnel 2 filters a part of the slurry water, it enters the slag separation screen 3 → The slag separation screen 3 screens out the grass roots and enters the grass root belt conveyor → Transferred to the grass root storage yard.

[0025] When the cleaning device is working, one cylindrical ore washer in one series is matched with two trough type ore washers for work. As Figure 2 shown, the overflow ports of the two trough type ore washers 5 are connected through the overflow tank 1, and the height difference between the installation positions of the two trough type ore washers 5 is 200 mm. The overflow tank 1 is a box structure with a transverse width of 600 mm, a height of 800 mm, and a length of 8000 mm, and the installation slope of the overflow tank 1 is 8°. The trough washing slurry in the trough type ore washer 5 at a high position enters the overflow port of the trough type ore washer 5 at a low position through the height difference. The slurry water of the two trough type ore washers 5 converges together and enters the screening funnel 2 through the overflow tank 1. The function of the screening funnel 2 is to divert a part of the slurry water. The amount of slurry water overflowing from the two trough type ore washers 5 is about 600 - 700 m 3 / h, the processing capacity of the screen surface of the ZDS1230 slag separation screen has reached the critical state. It can operate normally when the screen holes are unobstructed, but if there is a slight blockage in the screen surface, it will cause the slurry water to overflow onto the grass root belt conveyor, resulting in belt slippage and abnormal operation. Therefore, a screening funnel 2 is set before the slurry water enters the slag separation screen 3. The width of the overflow trough 2 should gradually widen near the screening funnel 2, reaching 1500 mm, to increase the working surface of the screening funnel 2. The screening funnel 2 is a 90° corner funnel, and the outermost line of the funnel is on the same straight line as the side line of the overflow trough 1, and the extended length of the side line of the overflow trough 1 is 2200 mm. The screen 201 in the screening funnel 2 is supported by a steel plate with a thickness of 8 mm. The size of the steel plate is 2200×1500 mm, and the through-hole size on the steel plate is Φ7, with a hole spacing of 20 mm. Then it turns 90° and enters the feed port of the slag separation screen 3, and the feed height is 250 mm higher than the screen surface of the slag separation screen 3. Part of the slurry water entering the screening funnel 2 flows downward through the through-holes on the steel plate into the chute funnel 7, while the slurry water carrying grass roots and impurities remains on the screen 201 of the screening funnel 2. The screening funnel 2 can separate 150 m 3 / h of slurry water, and the final slurry flow rate entering the slag separation screen 3 is 500 - 550 m 3 / h, reaching a flow rate that the slag separation screen 3 can completely handle, ensuring that the slurry water does not enter the grass root belt conveyor.

[0026] Such as Figure 3 and Figure 4As shown in the figure, the slag separation screen 3 is installed on the lower side of the screening funnel 2 with a height difference of 150 mm, which is beneficial for the slurry and grass root mixture to flow gently onto the screen surface of the slag separation screen 3 when entering it, so that the slurry water will not splash or impact. There are a vibrator 8 and an inclined guide plate 6 in the screening funnel 2. The width of the guide plate 6 is 400 mm and the length is 1035 mm. The upper end of the guide plate 6 is connected to the outermost side of the long side of the screen 201 of the screening funnel 2, and the height difference from the screen 201 is 50 mm. There is a gap between the lower end of the guide plate 6 and the side wall of the screening funnel 2, and this gap serves as the feed inlet of the slag separation screen 3. The feed inlet of the slag separation screen 3 is narrower than the width of the screen surface of the slag separation screen 2. When the slag separation screen 3 works, the grass roots and sundries in the slurry water move forward through vibration and enter the grass root belt to be transported to the grass root pile. The slurry water enters the chute funnel 7 through the screen surface of the slag separation screen 3, converges with the slurry water flowing down from the screening funnel 2 and then enters the slurry pipe, and finally enters the thickening tank connected to the slurry pipe. The chute funnel 7 is installed below the slag separation screen 3 and extends below the screening funnel 2. The width of the bottom plate of the entire chute funnel 7 is 1150 mm and the length is 6000 mm. When installed, the bottom plate should have a 10° inclination, which is beneficial for the slurry water not to accumulate mud when passing through the chute funnel 7, and the fast slurry flow rate will not cause the chute funnel 7 to be blocked. A square box is made of 10 mm steel plate at the confluence of the chute funnel 7 and the screening funnel 2, and it is made into a semi-sealed shape and connected into a whole, so that the slurry water will not splash everywhere when passing through. The total length of the chute funnel 7 is about 11000 mm, and it is connected to the thickening overflow open channel and enters the thickening tank.

[0027] Due to site limitations, the grass root belt conveyor uses a DT75 type B650 belt conveyor. During the design, due to site and height difference factors, the belt needs to be fabricated and installed first, and then the slag separation screen 3 and the chute funnel 7 can be installed in sequence. The grass root belt conveyor is 11000 mm away from the farthest grass root storage yard and needs to pass through the bottom frame columns of the trough type ore washing machine. A pressure roller must be installed when the belt passes through the last trough washer, so that the belt rack rises 1800 mm in a short distance to install the second transfer belt, and finally the grass roots, sundries, etc. are transported to the grass root storage yard through the transfer belt.

[0028] The content illustrated in the above embodiments should be understood that these embodiments are only used to more clearly illustrate the present invention, rather than to limit the scope of the present invention. After reading the present invention, various equivalent forms of modification of this embodiment by those skilled in the art all fall within the scope defined by the appended claims of the present invention.

Claims

1. A root cleaning device for a trough type ore washing machine, characterized in that: It includes an overflow tank (1), a screening funnel (2), a slag separation screen (3), a conveying device (4), and an inclined guide plate (6). The conveying device (4) is located below the discharge port of the slag separation screen (3). A screen mesh (201) is provided in the screening funnel (2) along the cross-sectional direction. One end of the overflow tank (1) is connected to the overflow port of the trough type ore washing machine (5), and the other end is connected to the upper part of the screen mesh (201). The guide plate (6) is arranged in the screening funnel (2). There is a gap between the lower end of the guide plate (6) and the side wall of the screening funnel (2). The screen surface of the slag separation screen (3) is arranged below this gap. Both the bottom of the screening funnel (2) and the slag separation screen (3) are connected to a chute funnel (7). The discharge port of the chute funnel (7) is connected to a slurry pipe.

2. The root cleaning device of the trough type ore washing machine according to claim 1, characterized in that: There are multiple trough type ore washing machines (5). The multiple trough type ore washing machines (5) are arranged along the length direction of the overflow tank (1). There is a height difference between the overflow ports of adjacent two trough type ore washing machines (5), and the trough type ore washing machine (5) closer to the screening funnel (2) is located at a lower position.

3. The root cleaning device of the trough type ore washing machine according to claim 1, characterized in that: The overflow tank (1) has an inclination angle along the length direction, and the screening funnel (2) is located at the foot of the slope of the overflow tank (1).

4. The root cleaning device of the trough type ore washing machine according to claim 3, characterized in that: The end of the overflow tank (1) closer to the screening funnel (2) is provided with a flared structure.

5. The root cleaning device of the trough type ore washing machine according to claim 1, wherein: The screen mesh (201) is of a rectangular structure. The overflow tank (1) is connected to the short side of the screen mesh (201), and the width of the overflow tank (1) is equal to the length of the short side of the screen mesh (201).

6. The root cleaning device of the trough-type ore washing machine according to claim 5, characterized in that: The guide plate (6) is connected to the long side of the screen mesh (201), and the width of the guide plate (6) is less than the length of the long side of the screen mesh (201). The guide plate (6) is arranged on the side away from the overflow tank (1).

7. The root cleaning device of the trough type ore washing machine according to claim 1, wherein: An exciter (8) is provided on the slag separation screen (3).

8. The root cleaning device of the trough type ore washing machine according to claim 1, characterized in that: The conveying device (4) is a belt conveyor.

9. The root cleaning device of the trough type ore washing machine according to claim 1, characterized in that: The bottom plate of the chute funnel (7) has an inclination angle, and the slurry pipe is located at the foot of the slope of this bottom plate.

10. The root cleaning device of the trough type ore washing machine according to claim 9, characterized in that: The outer end of the slurry pipe is connected to a thickener.

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