A multi-particle-size tailings dry separation device

Abstract

The utility model discloses a kind of multi-particle size tailings dry separation device, including driving table body and the rotation part of main shaft mechanical connection with driving table body. Rotary part includes base, separation container and be used for the compression mechanism of fixing separation container on base;The separation container includes loading bucket, bucket cover and multiple nested arrangement sieve cylinder. Rotary part of the utility model is equipped with multiple nested arrangement sieve cylinder, constitutes multiple annular, corresponding different particle size interval separation cavity, can realize multiple particle size rapid centrifugal separation one-time, significantly improve separation efficiency, simultaneously still have advantages such as easy operation.

Description

Technical Field

[0001] This utility model belongs to the field of mining backfilling technology, specifically relating to a dry tailings separation device. Background Technology

[0002] Mine backfilling is an indispensable and crucial step in the mining process, and the quality of the backfill directly affects the safety and stability of the mine. Many factors influence the quality of the backfill, among which the particle size distribution of tailings has a significant impact on its strength. By rationally adjusting the gradation of tailings particles, the adverse effects of particle size differences on the strength of the backfill can be effectively reduced. Therefore, it is necessary to pre-screen the tailings according to different particle sizes to lay the foundation for proper gradation.

[0003] Currently, the main methods for screening tailings particles include vibrating screening, hydrocyclone screening, and centrifugal screening.

[0004] I. Vibrating screening can achieve dry screening, but it is mainly used for screening large particles. It is less effective and less efficient for screening fine tailings.

[0005] Second, although the hydrocyclone screening method can achieve efficient separation of tailings with different particle sizes, it adopts a wet screening method, and an additional drying step is required after screening, which makes the process complicated.

[0006] Third, centrifugal sieving is suitable for screening dry tailings and can also be used for screening fine-grained tailings. However, it can only separate a single target particle size in a single operation, requiring repeated operations to achieve multi-stage separation. Moreover, existing equipment mostly uses bolted screens, and the replacement process requires disassembling fasteners, which is time-consuming and inefficient. In gradation optimization experiments, it is often necessary to quickly adjust different particle size combinations for comparative testing. The intermittent operation mode and inefficient screen replacement method of existing equipment seriously affect experimental efficiency and cannot meet the needs of high-frequency, multi-variable experiments. Utility Model Content

[0007] This utility model proposes a dry separation device for multi-size tailings, the purpose of which is to solve the problem that existing centrifugal separation equipment cannot complete multi-size separation in one go and has low operating efficiency.

[0008] The technical solution of this utility model is as follows:

[0009] A multi-size tailings dry separation device includes a drive platform and a rotating part mechanically connected to the main shaft of the drive platform. The rotating part includes a base, a separation container, and a clamping mechanism for fixing the separation container on the base.

[0010] The separation container includes a filling bucket, a bucket lid, and multiple nested sieve cylinders;

[0011] The bottom center of the filling barrel has a first square post extending upward and a second square post extending downward, and the second square post cooperates with the square hole opened at the bottom of the base;

[0012] The structure of the screen cylinder is as follows: it includes a circular base plate and a cylindrical screen, with the bottom of the screen fixedly connected to the outer edge of the base plate; a square transmission sleeve with an upward protrusion is provided at the center of the base plate;

[0013] The bottom plates of all the screen cylinders are stacked on the bottom of the loading barrel in sequence. The square transmission sleeves between adjacent screen cylinders are nested and fitted together. The square transmission sleeve of the outermost screen cylinder is fitted with the first square column. There is a gap between adjacent screens, and the screen hole diameter of the outer screen is smaller than that of the inner screen.

[0014] The lid is attached to the filling barrel by a pressing mechanism.

[0015] As a further improvement to the multi-size tailings dry separation device: the clamping mechanism includes a support, a crossbeam, a threaded rod, a pressure plate, and a locking nut;

[0016] The bracket consists of two sets, left and right, with their lower ends fixedly connected to the edges of the base; the upper part of the bracket has a horizontally penetrating square groove, and the two ends of the crossbeam pass through the square groove on the corresponding side.

[0017] The crossbeam has a threaded hole that runs vertically through the middle, and the threaded rod is engaged with the threaded hole. The lower end of the threaded rod is rotatably connected to the pressure plate.

[0018] The locking nut engages with the threaded rod, and its bottom is used to contact the top surface of the crossbeam.

[0019] As a further improvement to the multi-size tailings dry separation device: the lower end of the threaded rod is rotatably connected to the pressure plate through a deep groove ball bearing; the lower end of the threaded rod is connected to the inner ring of the deep groove ball bearing through a spring retaining ring, and the outer ring of the deep groove ball bearing is installed on the center hole of the pressure plate through a bearing retaining ring.

[0020] As a further improvement to the multi-size tailings dry separation device, handles are provided on the upper end of the threaded rod and on the locking nut.

[0021] As a further improvement to the multi-size tailings dry separation device: an elastic pad is provided at the bottom of the barrel cover, and the top of each screen is in contact with the elastic pad.

[0022] As a further improvement to the multi-size tailings dry separation device, an annular sealing gasket is provided between the bottom edge of the barrel cover and the upper edge of the loading barrel.

[0023] As a further improvement to the multi-size tailings dry separation device: the drive platform includes a main body, in which a vertical main shaft is mounted via bearings, and the upper end of the main shaft is connected to the bottom of the base via a connecting sleeve.

[0024] As a further improvement to the multi-size tailings dry separation device: the upper end of the main shaft is connected to the lower end of the connecting sleeve via a flat key, and the connecting sleeve is also fixedly connected to the upper end of the main shaft via bolts and a connecting cover.

[0025] As a further improvement to the multi-size tailings dry separation device: a positioning boss extends downward from the bottom of the base, and the positioning boss cooperates with the positioning hole on the top of the connecting sleeve; the base is fixedly connected to the connecting sleeve by multiple bolts evenly distributed around the circumference of the positioning boss.

[0026] As a further improvement to the multi-size tailings dry separation device: a motor is also installed on the drive platform, a drive pulley is installed on the output shaft of the motor, and a driven pulley is installed at the lower end of the main shaft. The drive pulley and the driven pulley are connected by a transmission belt.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1. The rotating part of this utility model is provided with multiple nested sieve cylinders, which form multiple annular separation chambers corresponding to different particle size ranges, enabling rapid centrifugal separation of multiple particle sizes at one time, significantly improving separation efficiency.

[0029] 2. The screen cylinder is placed in the loading hopper. When changing screen cylinders of different specifications, there is no need to disassemble the fasteners. The hopper cover is fixed to the base by the clamping mechanism. It can be installed and disassembled by moving the crossbeam, threaded rod, and pressure plate and rotating the threaded rod, which simplifies the operation process and improves work efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a perspective view of the rotating part of this utility model;

[0032] Figure 3 This is a cross-sectional view of the present invention;

[0033] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0034] Figure 5 for Figure 3 A magnified view of part B in the middle section;

[0035] Figure 6 for Figure 3 A magnified view of part C in the middle. Detailed Implementation

[0036] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0037] like Figure 1 A multi-size tailings dry separation device includes a drive platform 10 and a rotating part mechanically connected to the main shaft 10-2 of the drive platform 10.

[0038] like Figure 1 , Figure 2 and Figure 3 The rotating part includes a base 8, a separation container, and a clamping mechanism for fixing the separation container to the base 8.

[0039] The separation container includes a filling bucket 7, a bucket lid 6, and multiple nested sieve cylinders 11.

[0040] The material container 7 has a first square post 7-1 extending upward from the center of its bottom and a second square post 7-2 extending downward. The second square post 7-2 engages with a square hole at the bottom of the base 8, allowing the material container 7 to rotate synchronously with the base 8.

[0041] The structure of the screen cylinder 11 is as follows: it includes a circular base plate 11-2 and a cylindrical screen 11-1. The bottom of the screen 11-1 is fixedly connected to the outer edge of the base plate 11-2 by welding. A square transmission sleeve 11-3 with an upward protrusion is provided at the center of the base plate 11-2. The square transmission sleeve 11-3 is stamped.

[0042] The bottom plates 11-2 of all screen cylinders 11 are stacked sequentially at the bottom of the loading barrel 7. The square transmission sleeves 11-3 between adjacent screen cylinders 11 are nested together. The square transmission sleeve 11-3 of the outermost screen cylinder 11 (located at the bottom) is matched with the first square column 7-1, so that all screen cylinders 11 rotate synchronously with the loading barrel 7 and the base 8.

[0043] There is a gap between adjacent screens 11-1, and the screen hole diameter of the outer screen 11-1 is smaller than that of the inner screen 11-1, thus forming multiple annular separation spaces with particle size gradually decreasing from the inside to the outside.

[0044] The lid 6 is mounted on the filling bucket 7 via a clamping mechanism. Further, as... Figure 5The bottom of the barrel lid 6 is provided with an elastic pad 13, and the top of each screen 11-1 is in contact with the elastic pad 13 to prevent tailings from passing over the screen 11-1 from the top. At the same time, an annular sealing gasket 15 is also provided between the bottom edge of the barrel lid 6 and the upper edge of the loading barrel 7 to prevent tailings leakage.

[0045] like Figures 1 to 3 The clamping mechanism includes a bracket 3, a crossbeam 4, a threaded rod 1, a pressure plate 5, and a locking nut 2.

[0046] The bracket 3 consists of two sets, left and right, with their lower ends fixedly connected to the edges of the base 8 by welding. The upper part of the bracket 3 has a horizontally penetrating square groove, and the two ends of the crossbeam 4 pass through the square groove on the corresponding side.

[0047] The crossbeam 4 has a through-hole in the middle, and the threaded rod 1 engages with this hole. The lower end of the threaded rod 1 is rotatably connected to the pressure plate 5. The pressure plate 5 is placed on the lid 6. Furthermore, a circular pad 12 is provided between the pressure plate 5 and the lid 6.

[0048] Specifically, such as Figure 4 The lower end of the threaded rod 1 is rotatably connected to the pressure plate 5 through a deep groove ball bearing 14. The lower end of the threaded rod 1 is connected to the inner ring of the deep groove ball bearing 14 via a spring retaining ring, and the outer ring of the deep groove ball bearing 14 is installed on the center hole of the pressure plate 5 via a bearing retaining ring.

[0049] The locking nut 2 is engaged with the threaded rod 1, and its bottom is used to contact the top surface of the crossbeam 4.

[0050] Preferably, a handle is provided on the upper end of the threaded rod 1 and on the locking nut 2.

[0051] The separation device in this embodiment is for experimental use and is relatively small in size. The base 8 has a circular recess with an inner diameter of 230mm. The first square column 7-1 and the second square column 7-2 both have a side length of 30mm in the positive direction. The arc-shaped support 3 has a height of 390mm and a thickness of 10mm. The square groove is approximately 40mm wide and 60mm high, with the upper end of the groove 3 30mm from the top of the support 3. The threaded rod 1 has a nominal diameter of 25mm and a length of 80mm. The pressure plate 5 has a diameter of 150mm and a thickness of 20mm. The loading hopper 7 has an inner diameter of 190mm, a wall thickness of 10mm, and a height of 300mm. The hopper lid 6 has a diameter of 210mm and a thickness of 10mm. The spacing between each layer of sieve 11-1 is 20mm, allowing for a maximum of four layers of sieve cylinders 11.

[0052] During implementation, the dimensions of each part can be designed according to needs. It should be noted that the diameter of the pressure plate 5 should not be too large, otherwise one end of the crossbeam 4 will not be able to smoothly pass through the square groove during installation. The length of the crossbeam 4 should also not be too long, ensuring that after one end enters the square groove, the other end can smoothly move between the two supports 3.

[0053] like Figure 3 The drive platform 10 includes a body 10-1, in which a vertical spindle 10-2 is mounted via two sets of angular contact bearings.

[0054] The upper end of the main shaft 10-2 is connected to the bottom of the base 8 via a connecting sleeve 9.

[0055] like Figure 6 As shown, the upper end of the main shaft 10-2 is connected to the lower end of the connecting sleeve 9 via a key 10-7. The connecting sleeve 9 is also fixedly connected to the upper end of the main shaft 10-2 via bolts and a connecting cover 10-8. A positioning boss extends downwards from the bottom of the base 8, which engages with a positioning hole on the top of the connecting sleeve 9 for positioning. The base 8 is fixedly connected to the connecting sleeve 9 via multiple bolts evenly distributed around the circumference of the positioning boss.

[0056] The drive platform 10 is also equipped with a motor 10-6. The output shaft of the motor 10-6 is equipped with a drive pulley 10-5, and the lower end of the main shaft 10-2 is equipped with a driven pulley 10-3. The drive pulley 10-5 and the driven pulley 10-3 are connected by a transmission belt 10-4, which drives the main shaft 10-2 to rotate at high speed.

[0057] The working process of this device is as follows: Place the loading bucket 7 into the base 8, then select a screen cylinder 11 with a particle size that meets the requirements, and place it into the loading bucket 7 in a nested manner. Place the tailings to be separated into the innermost screen cylinder 11, and cover the bucket with the lid 6. Then, place the assembled threaded rod 1, crossbeam 4, locking nut 2, and pressure plate 5 on top of the lid 6. When placing them, first tilt the crossbeam 4 so that one end passes through the square groove on one side, then place the pressure plate 5 on top of the lid 6, and then move the whole device to the other side so that the other end of the crossbeam 4 also passes through the square groove on the other side, ensuring that the pressure plate 5 is located in the center of the lid 6. Then, rotate the handle at the upper end of the threaded rod 1. At this time, the crossbeam 4 cannot rotate due to the restriction of the square groove. Therefore, the rotation of the threaded rod 1 will cause the crossbeam 4 to move upward along the square groove until it contacts the top of the square groove, thereby pressing the lid 6 with the downward reaction force of the bracket 3. Then, tighten the locking nut 2 for pre-tightening to prevent the threaded rod 1 from loosening during operation. Then, the motor 10-6 is started, driving the platform 10 to rotate the entire rotating part at high speed. Under centrifugal force, the tailings pass through the screens 11-1 of each layer in sequence until they reach the screen 11-1 with a screen hole diameter smaller than their particle size or reach the inner wall of the loading hopper 7. After separation is completed, the motor 10-6 is turned off, the threaded rod 1 is rotated in the opposite direction to lower the crossbeam 4, and then it is moved a certain distance to remove one end of the crossbeam 4 from the square groove. Then, the threaded rod 1, crossbeam 4, and pressure plate 5 are removed as a whole. Finally, the hopper lid 6 is opened, and each screen cylinder 11 and the loading hopper 7 are taken out in sequence. The tailings in each screen cylinder 11 and the last loading hopper 7 are the tailings of the corresponding particle size.

[0058] It should be noted that, as will be apparent to those skilled in the art, this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. The scope of this utility model is defined by the claims rather than the foregoing description.

Claims

1. A multi-size tailings dry separation device, comprising a drive platform (10) and a rotating part mechanically connected to the main shaft (10-2) of the drive platform (10), characterized in that: The rotating part includes a base (8), a separation container, and a clamping mechanism for fixing the separation container to the base (8); The separation container includes a loading bucket (7), a bucket lid (6), and multiple nested sieve cylinders (11). The bottom center of the loading barrel (7) has a first square post (7-1) extending upward and a second square post (7-2) extending downward. The second square post (7-2) is matched with the square hole opened at the bottom of the base (8). The structure of the sieve cylinder (11) is as follows: it includes a circular base plate (11-2) and a cylindrical sieve (11-1). The bottom of the sieve (11-1) is fixedly connected to the outer edge of the base plate (11-2). A square transmission sleeve (11-3) with an upward protrusion is provided at the center of the base plate (11-2). The bottom plates (11-2) of all screen cylinders (11) are stacked sequentially at the bottom of the loading bucket (7). The square transmission sleeves (11-3) between adjacent screen cylinders (11) are nested together. The square transmission sleeve (11-3) of the outermost screen cylinder (11) is matched with the first square column (7-1). There is a gap between adjacent screens (11-1), and the screen hole diameter of the outer screen (11-1) is smaller than that of the screen hole diameter of the inner screen (11-1). The lid (6) is mounted on the filling bucket (7) by a pressing mechanism.

2. The multi-size tailings dry separation device as described in claim 1, characterized in that: The clamping mechanism includes a bracket (3), a crossbeam (4), a threaded rod (1), a pressure plate (5), and a locking nut (2); The bracket (3) consists of two sets, left and right, with the lower ends fixedly connected to the edge of the base (8); the upper part of the bracket (3) is provided with a horizontally penetrating square groove, and the two ends of the crossbeam (4) pass through the square groove on the corresponding side respectively. The middle part of the crossbeam (4) is provided with a threaded hole that runs through the top and bottom. The threaded rod (1) is engaged with the threaded hole, and the lower end of the threaded rod (1) is rotatably connected to the pressure plate (5). The locking nut (2) is engaged with the threaded rod (1), and its bottom is used to contact the top surface of the crossbeam (4).

3. The multi-size tailings dry separation device as described in claim 2, characterized in that: The lower end of the threaded rod (1) is rotatably connected to the pressure plate (5) through a deep groove ball bearing (14); the lower end of the threaded rod (1) is connected to the inner ring of the deep groove ball bearing (14) through a spring retaining ring, and the outer ring of the deep groove ball bearing (14) is installed on the center hole of the pressure plate (5) through a bearing retaining ring.

4. The multi-size tailings dry separation device as described in claim 2, characterized in that: Handles are provided on the upper end of the threaded rod (1) and on the locking nut (2).

5. The multi-size tailings dry separation device as described in claim 1, characterized in that: The bottom of the bucket lid (6) is provided with an elastic pad (13), and the top of each screen (11-1) is in contact with the elastic pad (13).

6. The multi-size tailings dry separation device as described in claim 1, characterized in that: An annular sealing gasket (15) is provided between the bottom edge of the lid (6) and the upper edge of the filling barrel (7).

7. The multi-size tailings dry separation device as described in any one of claims 1 to 6, characterized in that: The drive platform (10) includes a main body (10-1), in which a vertical spindle (10-2) is mounted via bearings. The upper end of the spindle (10-2) is connected to the bottom of the base (8) via a connecting sleeve (9).

8. The multi-size tailings dry separation device as described in claim 7, characterized in that: The upper end of the main shaft (10-2) is connected to the lower end of the connecting sleeve (9) via a flat key (10-7). The connecting sleeve (9) is also fixedly connected to the upper end of the main shaft (10-2) via bolts and a connecting cover (10-8).

9. The multi-size tailings dry separation device as described in claim 7, characterized in that: The base (8) has a positioning boss extending downward from its bottom, which engages with the positioning hole at the top of the connecting sleeve (9); the base (8) is fixedly connected to the connecting sleeve (9) by a plurality of bolts evenly distributed around the circumference of the positioning boss.

10. The multi-size tailings dry separation device as described in claim 7, characterized in that: The drive platform (10) is also equipped with a motor (10-6), and a drive pulley (10-5) is installed on the output shaft of the motor (10-6). A driven pulley (10-3) is installed at the lower end of the main shaft (10-2). The drive pulley (10-5) and the driven pulley (10-3) are connected by a transmission belt (10-4).

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