Mine wet-type grading, screening and separating device
By designing a reasonable mine wet screening and ore separation device, and using the separation box and control screw assembly to adjust the slurry flow and flow rate, the problem of low screening efficiency of high-frequency vibrating screens is solved, and efficient screening and energy-saving operation are achieved.
Patent Information
- Application Number
- CN202423256823.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-29
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-12-29
AI Technical Summary
The existing high-frequency vibrating screen has low screening efficiency in mine beneficiation, resulting in over-grinding and cost waste, and the screening efficiency is greatly affected by the slurry flow rate and time control.
A rationally designed wet screening and ore separation device for mines includes a separation box, a feed pipe, a discharge pipe, a water supply pipe and a control screw assembly. The box is separated by partitions and the slurry flow and flow rate are controlled by inserting plates to ensure uniform screening.
It improves screening efficiency, reduces production costs, realizes energy-saving and efficient operation of equipment, and avoids material accumulation and over-grinding.
Smart Images
Figure CN223382016U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mine beneficiation equipment, namely a mine wet separation and screening device. The device uses a high-frequency vibration screen to screen the ore, so as to increase the high-frequency vibration screen screening effect. Background Art
[0002] In the existing technology, the main function of high-frequency vibrating screen in the mineral processing process is screening, forcibly separating the coarse particles and fine particles in the ore pulp, returning the coarse particles on the screen to the ball mill for reprocessing, and the fine particles under the screen enter the dehydration link. The screening efficiency of the high-frequency vibrating screen determines the output of the ball mill, so the high-frequency vibrating screen is a very important process in the mineral processing process. If the screening efficiency is not high, a large amount of the products on the screen will be returned to the ball mill, causing over-grinding, and at the same time increasing the consumption of steel balls and liner plates of the ball mill, resulting in unnecessary cost waste. If the screening efficiency is high, it will not only save cost output, but also make the equipment energy-saving and efficient. How to improve the screening efficiency is not easy. We have to mention the screening and ore separation device. Under normal circumstances, the high-frequency vibrating screen feed method is that the slurry is pumped into the separation box by a slurry pump, and the slurry flows through the feeding pipe to the screen surface for screening. Generally, the high-frequency vibrating screen is composed of multiple layers of screen surfaces. There is a height difference between the screen surfaces. The greater the height difference, the faster the slurry flow rate. The screening time after passing the screen surface is shorter, and the slurry flows to the next selection process before it is fully screened, which affects the screening efficiency. On the contrary, the height difference is small and the flow rate is slow, and the screening time after passing the screen surface is longer, resulting in material accumulation and affecting the screening efficiency. Therefore, the screening efficiency of the vibrating screen can only be improved by controlling the material and flow rate within a certain controllable range. Utility Model Content
[0003] The purpose of the utility model is to provide a screening and ore separation device for wet separation of mines with reasonable design and good ore separation effect in view of the above-mentioned shortcomings.
[0004] The technical solution of the utility model is: a mine wet sorting, screening and ore separation device, which is characterized in that it includes an open top ore separation box, and the partition inside the ore separation box divides the ore separation box into a small feeding box body and a small discharging box body; a feeding pipe is provided in the small feeding box body; a water supply pipe and a control screw assembly are provided on the small discharging box body, and a discharging pipe and a guide groove are provided at the lower part of the small discharging box body.
[0005] The above scheme also includes:
[0006] The height of the discharge port of the discharge pipe is 150mm from the bottom of the small discharge box.
[0007] The partition is lower than the upper edge of the ore distribution box.
[0008] The advantages of the present utility model are: 1. A separation box of appropriate size is made, and a partition is set in the box to divide the box into two small boxes. When the incoming box is filled with ore slurry, the slurry overflows into the other box. Since the discharge pipe is on the side and at the same height, it ensures that the liquid level flows evenly into the feed pipe, and low screening efficiency will not be caused by uneven feeding. 2. The insert is set to block the ore slurry from entering the discharge pipe and control the amount of ore slurry entering the discharge pipe. 3. The control screw assembly is set, which mainly utilizes the relative movement of the screw and the nut to control the up and down movement of the insert in the guide groove, thereby controlling the flow rate and flow of the ore slurry to the screen surface. 4. The water supply pipe is set to prevent the incoming ore concentration from being too high, so as to dilute the ore slurry and prevent the ore slurry from being too dry, causing the ore slurry to accumulate on the screen surface and affect the screening efficiency. 5. The device has reasonable design, simple and compact structure, easy installation, low price, energy saving, good ore separation effect, reduces the problem of low screening efficiency caused by uneven ore separation, and reduces production cost output.
[0009] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION
[0011] See also Figure 1 The names of the parts are as follows: 1. Ore distribution box, 2. Ore feeding pipe, 3. Water supply pipe, 4. Partition, 5. Ore discharge pipe, 6. Insert plate, 7. Screw, 8. Handwheel, 9. Guide groove, 10. Small feeding box, 11. Small discharging box, 12. Control screw assembly.
[0012] See also Figure 1 The wet sorting and screening device for mining includes an open-top ore separation box 1, sized appropriately according to the processing capacity of the high-frequency vibrating screen. A partition 4 within the separation box 1 divides the separation box 1 into two smaller boxes: a feed box 10 and a discharge box 11. The feed box 10 houses a feed pipe 2; the discharge box 11 is equipped with a water supply pipe 3 and a control screw assembly 12. The discharge box 11 houses a discharge pipe 5 at its lower portion, and a guide groove 9 (opposite channel steel, limiting the position of a plug plate 6) at the entrance to the inner side of the discharge pipe 5. A plug plate 6 is located within the guide groove 9 and is welded to the lower end of a screw 7. The upper end of the screw 7 is connected to a handwheel 8 via a bearing and nut.
[0013] The height of the partition 4 can be lower than 1 / 3 of the ore distribution box 1. The feed pipe 2 is installed in the small feed box 10, and the water supply pipe 3 is installed in the small discharge box 11. On the right side of the small discharge box 11, that is, the discharge end, the discharge port is cut with water welding. The number of discharge ports should be the same as the number of high-frequency vibration screen layers, that is, the number of ports should be the same as the number of high-frequency vibration screen layers. The length of the discharge port is generally 3 times the diameter of the discharge port. The height of the discharge port can be 150mm from the bottom of the small discharge box 11. The discharge pipe 5 is welded on the outside of the discharge port, and the guide is welded on the inside of the discharge port. Slot 9, use 8mm steel plate to make the insert plate 6. The size of the insert plate 6 can completely block the discharge port. Weld the insert plate 6 to the processed screw 7. The length of the screw 7 should be higher than the height of the small discharge box 11, about 400mm higher than the box. Screw the screw 7 into the nut (omitted in the figure), and then install the screw and nut together in the bearing body. Insert the insert plate 6 at the bottom of the guide groove 9, weld the bearing body to the small discharge box 11, and fix the handwheel 8 on the screw 7. Other discharge ports can be installed by analogy.
[0014] See also Figure 1 Working Principle: This device is installed before the high-frequency vibrating mesh screen feeds ore, and the discharge pipe 5 is connected to the high-frequency vibrating mesh screen feed port. When the ore slurry enters the small feeding box 10 through the feed pipe 2, the ore slurry will quickly fill the small feeding box 10. At this time, the ore slurry will overflow into the small discharge box 11 after it exceeds the partition 4. Since the discharge ports are all on the side of the small discharge box 11 and are at a certain height from the bottom, the ore slurry can only be discharged through the discharge pipe 5 after reaching the height of the discharge port, thus ensuring that the amount of ore discharged is consistent. Since the high-frequency vibrating screen is multi-layered, that is to say, there is a height difference, the greater the height difference, the faster the flow rate will be, which will lead to different flow rates of the slurry flowing to the screen surface. The greater the height difference, the faster the slurry flow rate, the slurry passing through the screen surface time and screening time are shorter, and the slurry has not been fully screened before it flows to the next selection process, which affects the screening efficiency. On the contrary, the height difference is small and the flow rate is slow, and the screening time after passing the screen surface time is longer, which causes material accumulation and also affects the screening efficiency. At this time, the height of the insert plate 6 can be adjusted up and down by the screw 7. The insert plate 6 controls the size of the discharge port, like a gate. At this time, for the discharge port with a large height difference, the feed amount can be smaller to control the flow rate of the slurry through the screen surface, thereby extending the screening time. For the discharge port with a small height difference, the feed amount can be larger to speed up the flow rate of the slurry through the screen surface, thereby shortening the screening time, and trying to keep the slurry of all discharge ports at the same flow rate through the screen surface, so as to ensure the screening efficiency of the vibrating screen, provide a guarantee for the next process, and reduce production cost expenditure.
Claims
1. Mine wet screening and ore separation device, characterized by The invention comprises an ore distribution box (1) with an open top, wherein a partition (4) in the ore distribution box (1) divides the ore distribution box (1) into a small ore feeding box (10) and a small ore discharging box (11); a ore feeding pipe (2) is provided in the small ore feeding box (10); a water supply pipe (3) and a control screw assembly (12) are provided on the small ore discharging box (11); and a ore discharging pipe (5) and a guide groove (9) are provided at the lower part of the small ore discharging box (11).
2. The mine wet screening and ore separation device according to claim 1, characterized in that The height of the discharge port of the discharge pipe (5) is 150 mm from the bottom of the discharge small box (11).
3. The mine wet screening and ore separation device according to claim 1 or 2, characterized in that The partition (4) is lower than the upper edge of the ore distribution box (1).