Automatic ore sampling device

Abstract

The invention provides an automatic ore sampling device which comprises a shell, a gear motor is arranged in the shell, a main shaft is arranged at the top of the gear motor, the gear motor and the main shaft are in transmission connection, a first-stage screen is arranged at the top of the main shaft, the first-stage screen is in a bent shape, an ore guide plate and a protective plate are arranged on the two sides of the first-stage screen respectively, and two adjusting baffles are symmetrically arranged on the other two sides of the first-stage screen; a second-level screen and a third-level screen are sequentially arranged below the first-level screen, and a first baffle and a second baffle are arranged on the side walls, corresponding to the second-level screen and the third-level screen, of the shell respectively. Sampling of ore blocks and ore powder is achieved through the three-stage screen, timing sampling is achieved through the rotating speed of the speed reducing motor, the adjusting baffle and the first-stage screen, the influence of human factors in the sampling process is effectively avoided, and the device can be widely applied to daily ore removal grade monitoring of mines.

Description

Technical Field

[0001] The invention belongs to the technical field of mine production equipment and relates to an automatic ore sampling device. Background Art

[0002] Geological sampling is one of the important tasks of mining geological work and the main way to determine the ore grade of a mine. However, the use of compliant and representative samples is restricted by many factors, such as the sense of responsibility of the sampling personnel, the geological knowledge of the ore body by the geologists and the on-site environment of the mining site. In addition, traditional grooving methods and continuous rapid drilling methods are time-consuming and labor-intensive, and have poor service capabilities for controlling the daily ore grade of the mining site. Especially for ore bodies with uneven mineralization, the use of the above-mentioned sampling schemes is prone to large errors in the prediction of the daily ore grade of the mine. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic ore sampling device to address the problems existing in the prior art, thereby solving the problem that the existing traditional sampling method is unable to accurately predict the ore grade due to interference from human factors.

[0004] To this end, the present invention adopts the following technical solutions: An automatic ore sampling device comprises a shell, wherein a reduction motor is arranged inside the shell, a main shaft is arranged on the top of the reduction motor, and the two are transmission-connected, a primary screen is arranged on the top of the main shaft, the primary screen is bent, and its edge contacts the inner wall of the shell.

[0005] The shell is provided with a rectangular opening, with a guide plate and a guard plate on two sides respectively, and two symmetrically arranged adjustment baffles on the other two sides, and the first-level screen is located directly below the rectangular opening.

[0006] A secondary screen and a tertiary screen are arranged below the primary screen in sequence; wherein the angle between the primary screen and the horizontal plane is -20 to -40 degrees, the angle between the secondary screen and the horizontal plane is -5 to -10 degrees, and the angle between the tertiary screen and the horizontal plane is 5 to 10 degrees; The side walls of the shell corresponding to the secondary screen and the tertiary screen are respectively provided with a first baffle and a second baffle; the outer wall of the shell corresponding to the primary screen is provided with a first ore guide plate; one side of the secondary screen is adjacent to the main shaft and the outer wall of the shell corresponding to the secondary screen is provided with a second ore guide plate; one side of the tertiary screen is adjacent to the main shaft and the outer wall of the shell corresponding to the tertiary screen is provided with a third ore guide plate; The other side wall of the shell corresponding to the secondary screen and the tertiary screen is respectively provided with an ore block discharge port and a powder ore discharge port.

[0007] Furthermore, the housing is provided with a motor switch and a rotation speed regulator, and the motor switch, the rotation speed regulator and the reduction motor are all electrically connected.

[0008] Furthermore, a vertically arranged ore baffle is provided above the adjusting baffle, and the two are in vertical contact, and the bottom of the ore baffle is in contact with the guard plate, the adjusting baffle and the ore guide plate in sequence.

[0009] Furthermore, the first baffle and the second baffle are both vertically arranged, and both are detachably connected to the housing.

[0010] Furthermore, the first guide plate, the second guide plate and the third guide plate are all of the same shape and size, and are arranged in parallel, with an angle of -20 to -40 degrees with the horizontal plane.

[0011] Furthermore, the outer shell is provided with vertically arranged strip openings at positions corresponding to the first baffle plate and the second baffle plate, and the side walls of the outer shell are provided with hanging beams at positions corresponding to the first baffle plate and the second baffle plate. The hanging beams are U-shaped and are respectively inserted into the first baffle plate and the second baffle plate.

[0012] Furthermore, a horizontally arranged slot is provided at the other side wall of the shell corresponding to the third-level screen, which is used to insert the third-level screen, and the third-level screen can be pushed and pulled back and forth along the slot.

[0013] Furthermore, an ore block baffle is provided above the ore block discharge port.

[0014] Furthermore, a powder ore recovery bin is formed between the third-stage screen and the inner wall of the shell.

[0015] Furthermore, the adjustment baffle is L-shaped.

[0016] The beneficial effects of the present invention are: The present invention is mainly used for the main ore conveying belt and cantilevered tunneling machine of the mine, and can collect block ore and powder ore. The block ore is transported to the laboratory for crushing and analysis, and the powder ore can be transported to the laboratory for direct analysis or on-site analysis with a portable spectrometer. The present invention can realize automatic sampling of ore blocks and ore powder, eliminate the interference of human factors in the sampling process, and can more accurately determine the ore grade of the mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the top view structure of the present invention; Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the A-A' direction; Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure along the B-B' direction; Figure 5 It is a schematic diagram of the top view of the structure of the first-level screen in the present invention.

[0018] In the figure, 1-ore baffle, 2-adjusting baffle, 3-primary screen, 4-ore guide plate, 4a-first ore guide plate, 4b-second ore guide plate, 4c-third ore guide plate, 5-guard plate, 6-first baffle, 7-second baffle, 8-third stage screen, 9-motor switch, 10-rotation speed regulator, 11-powder ore discharge port, 12-ore block discharge port, 13-secondary screen, 14-ore block baffle, 15-powder ore recovery bin, 16-reduction motor, 17-spindle, 18-hoisting beam, 19-slot, 20-housing. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is described below in conjunction with the accompanying drawings and implementation methods.

[0020] like Figure 1-4 As shown, an automatic ore sampling device includes a shell 20, a reduction motor 16 is arranged inside the shell 20, a vertically arranged main shaft 17 is arranged on the top of the reduction motor 16, and the two are transmission connected, and a primary screen 3 is arranged on the top of the main shaft 17; specifically, the reduction motor 16 can drive the main shaft 17 to rotate at different speeds.

[0021] The outer shell 20 is provided with a rectangular opening, with a guide plate 4 and a guard plate 5 on both sides, and two symmetrically arranged adjustment baffles 2 on the other two sides. The adjustment baffles 2 are L-shaped, and the primary screen 3 is located directly below the rectangular opening.

[0022] like Figure 5 As shown, the primary screen 3 is circular, and its several screen holes are concentrated at the rectangular opening of the shell 20, and its screening mesh size is ore blocks and powders below 50 mm; specifically, the primary screen 3 is bent, and its edge is in contact with the inner wall of the shell 20.

[0023] A vertically arranged ore baffle 1 is provided above the adjusting baffle 2, and the two are in vertical contact, and the bottom of the ore baffle 1 is in contact with the guard plate 5, the adjusting baffle 2 and the ore guide plate 4 in sequence; specifically, the distance between the two ore baffles 1 is the same as the width of the discharge port of the cantilever tunneling machine or the belt, so that the ore can fall directly onto the guard plate 5 instead of the primary screen 3.

[0024] A secondary screen 13 and a tertiary screen 8 are arranged in sequence below the primary screen 3; wherein, the secondary screen 13 is used to screen lump-level powder with a mesh size of less than 20 mm, and the tertiary screen 8 is used to screen mineral powder, and the sieve hole diameter can be selected according to the particle size required for laboratory optimization testing; specifically, in a clockwise direction, the primary screen 3 has an angle of -20 to -40 degrees with the horizontal plane, the secondary screen 13 has an angle of -5 to -10 degrees with the horizontal plane, the tertiary screen 8 has an angle of 5 to 10 degrees with the horizontal plane, and a powder ore recovery bin 15 is formed between the tertiary screen 8 and the inner wall of the outer shell 20.

[0025] The side walls of the outer shell 20 corresponding to the secondary screen 13 and the tertiary screen 8 are respectively provided with a first baffle 6 and a second baffle 7, which are both vertically arranged and detachably connected to the outer shell 20; specifically, the outer shell 20 is provided with a vertically arranged strip opening at the positions corresponding to the first baffle 6 and the second baffle 7, which are adapted to the sizes of the first baffle 6 and the second baffle 7, and a hanging beam 18 is provided at the top of the strip opening, and the hanging beam 18 is U-shaped, which is respectively plugged with the first baffle 6 and the second baffle 7; in addition, the other side wall of the outer shell 20 corresponding to the tertiary screen 8 is provided with a horizontally arranged slot 19, which is used to insert the tertiary screen 8, and the tertiary screen 8 can be pushed and pulled back and forth along the slot 19.

[0026] A first guide plate 4a is provided at the outer wall of the shell 20 corresponding to the primary screen 3; a second guide plate 4b is provided at the outer wall of the shell 20 corresponding to the secondary screen 13, which is adjacent to the main shaft 17 on one side of the secondary screen 13; a third guide plate 4c is provided at the outer wall of the shell 20 corresponding to the third screen 8, which is adjacent to the main shaft 17 on one side of the tertiary screen 8; a block discharge port 12 and a powder ore discharge port 11 are respectively provided at the other side walls of the shell 20 corresponding to the secondary screen 13 and the tertiary screen 8, and a block baffle 14 is provided above the block discharge port 12; specifically, the first guide plate 4a, the second guide plate 4b and the third guide plate 4c are all the same in shape and size, and the three are arranged in parallel, and in the clockwise direction, the angle between them and the horizontal plane is -20 to -40 degrees.

[0027] The housing 20 is provided with a motor switch 9 and a rotation speed regulator 10, and the motor switch 9, the rotation speed regulator 10 and the reduction motor 16 are all electrically connected; specifically, timed sampling can be achieved by adjusting the adjustment baffle 2 and twisting the rotation speed regulator 10 to adjust the speed of the reduction motor 16.

[0028] The use process of the present invention is as follows: First, place the device on a movable and height-adjustable steel frame to ensure perfect matching with the cantilever tunneling machine or belt. The ore baffle 1 corresponds exactly to the discharge port of the cantilever tunneling machine or belt to ensure that the ore falls directly onto the guard plate 5 rather than the primary screen 3. Then, adjust the distance between the two adjusting baffles 2, start the motor switch 9 and twist the rotary speed regulator 10, adjust to the appropriate motor speed and start sampling.

[0029] When it is necessary to collect ore blocks, the first baffle 6 is activated, the second baffle 7 and the ore block baffle 14 are removed, and the third-level screen 8 is replaced with an iron plate, and a sample bag and other ore block collecting devices are set under the ore block discharge port 12; among them, ore blocks larger than 50 mm roll down to the mine car or belt through the first guide plate 4a outside the first-level screen 3, and ore blocks smaller than 20 mm roll down to the mine car or belt through the third guide plate 4c outside the third-level screen 8, and 20-50 mm ores just enter the ore block collection device through the ore block discharge port 12.

[0030] When it is necessary to collect mineral powder, the first baffle 6 and the second baffle 7 are removed, the ore block baffle 14 and the third-level screen 8 are activated, and a sample bag and other ore block collection devices are set below the powder ore discharge port 11. The ore exceeding the mineral powder particle size requirement enters the mine car or belt through the first guide plate 4a, the second guide plate 4b and the third guide plate 4c respectively, and the mineral powder that meets the mineral powder particle size requirement just enters the ore block collection device.

Claims

1. An automatic ore sampling device, comprising a housing (20), characterized in that: A reduction motor (16) is provided inside the housing (20), a main shaft (17) is provided on the top of the reduction motor (16), and the two are in transmission connection, a primary screen (3) is provided on the top of the main shaft (17), and the primary screen (3) is in a bent shape, and its edge is in contact with the inner wall of the housing (20); A secondary screen (13) and a tertiary screen (8) are arranged in sequence below the primary screen (3), wherein the primary screen (3) has an angle of -20 to -40 degrees with the horizontal plane, the secondary screen (13) has an angle of -5 to -10 degrees with the horizontal plane, and the tertiary screen (8) has an angle of 5 to 10 degrees with the horizontal plane; The side walls of the housing (20) corresponding to the secondary screen (13) and the tertiary screen (8) are respectively provided with a first baffle (6) and a second baffle (7); A first ore guide plate (4a) is provided at an outer wall of the shell (20) corresponding to the primary screen (3); a second ore guide plate (4b) is provided at an outer wall of the shell (20) corresponding to the secondary screen (13) and adjacent to the main shaft (17); a third ore guide plate (4c) is provided at an outer wall of the shell (20) corresponding to the secondary screen (8) and adjacent to the main shaft (17); and a block ore discharge port (12) and a powder ore discharge port (11) are provided at the other side walls of the shell (20) corresponding to the secondary screen (13) and the tertiary screen (8); The housing (20) is provided with a rectangular opening, with a guide plate (4) and a guard plate (5) respectively provided on two sides thereof, and two symmetrically arranged adjustment baffles (2) provided on the other two sides, and the primary screen (3) is located directly below the rectangular opening.

2. The automatic ore sampling device according to claim 1, characterized in that: The housing (20) is provided with a motor switch (9) and a rotation speed regulator (10), and the motor switch (9), the rotation speed regulator (10) and the reduction motor (16) are all electrically connected.

3. The automatic ore sampling device according to claim 1, characterized in that: A vertically arranged ore baffle (1) is provided above the adjusting baffle (2), and the two are in vertical contact, and the bottom of the ore baffle (1) is in contact with the guard plate (5), the adjusting baffle (2) and the ore guide plate (4) in sequence.

4. The automatic ore sampling device according to claim 1, characterized in that: The first baffle (6) and the second baffle (7) are both arranged vertically, and are detachably connected to the outer shell (20).

5. The automatic ore sampling device according to claim 1, characterized in that: The first ore guide plate (4), the second ore guide plate (4b) and the third ore guide plate (4c) are all of the same shape and size, and are arranged in parallel, with an angle of -20 to -40 degrees with the horizontal plane.

6. The automatic ore sampling device according to claim 4, characterized in that: The side walls of the housing (20) are provided with strip openings at positions corresponding to the first baffle plate (6) and the second baffle plate (7), and a hanging beam (18) is provided at the top of the strip opening. The hanging beam (18) is U-shaped and is inserted into the first baffle plate (6) and the second baffle plate (7).

7. The automatic ore sampling device according to claim 1, characterized in that: The housing (20) is provided with a slot (19) at the other side wall corresponding to the third-level screen (8), which is used to insert the third-level screen (8). The third-level screen (8) can be pushed and pulled reciprocatingly along the slot (19).

8. The automatic ore sampling device according to claim 1, characterized in that: An ore block baffle (14) is provided above the ore block discharge opening (12).

9. The automatic ore sampling device according to claim 1, characterized in that: A powder ore recovery bin (15) is formed between the third-level screen (8) and the inner wall of the outer shell (20).

10. The automatic ore sampling device according to claim 1, characterized in that: The adjusting baffle (2) is L-shaped.

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