Distributing device for improving photoelectric mineral separation screening efficiency

Abstract

The invention relates to the field of screening devices, in particular to a material distributing device capable of improving photoelectric mineral separation screening efficiency, which comprises a vibrating screen, the vibrating screen is provided with a plurality of layers of strip-shaped screen meshes, one ends of the screen meshes in the length direction are obliquely lowered, an obliquely arranged material distributing plate is arranged above the vibrating screen, and the material distributing plate extends in the width direction of the screen meshes. The lower end of the material distribution plate faces the high end of the uppermost screen, a plurality of material guide strips which are evenly arranged at intervals in the inclination direction of the material distribution plate are fixedly installed at the top of the material distribution plate, and the material guide strips are in a V shape with openings facing the lower end of the material distribution plate; when the mineral aggregate slides down along the inclined material distribution plate, on one hand, the mineral aggregate moves towards the two sides of the width direction of the screen along the material guide strips, and on the other hand, the triangular material guide strips can slow down the downward sliding speed of the mineral aggregate.

Description

Technical Field

[0001] The present invention relates to the field of screening devices, and particularly to a feeding device for improving the screening efficiency of optoelectronic ore dressing. Background Art

[0002] Mineral screening is an important link in mineral processing, and its screening effect has a crucial impact on any subsequent process. As a newly emerging ore dressing technology in recent years, the intelligent optoelectronic ore dressing process has gradually occupied a relatively high application position in ore dressing due to its excellent properties such as intelligence, high efficiency, and greenness. In the continuous production process, the stability and efficiency of the ore supply are very important. Among the equipment suitable for optoelectronic ore dressing that has been put into use, the screening link before the separation of the optoelectronic ore dressing machine directly affects its separation effect to a certain extent. Under the existing conditions, improving the screening effect helps to optimize the separation result of optoelectronic ore dressing. The most direct and economical method is to optimize the feeding method into the vibrating screen because the feeding method has a greater impact on the screening effect.

[0003] The existing vibrating screen, such as a mine vibrating screen for easy cleaning disclosed in the utility model patent with the application number CN202321251519.8, includes a frame, a feed hopper, and a screen mesh. The feed hopper is fixed at the end of the frame, and the screen mesh is placed inside the frame. In this structure, the ore is fed from the feed hopper, and the ore passes through the screen mesh for screening.

[0004] Due to the single feeding method of the existing vibrating screen, the utilization area of the screen mesh is not high, the ore cannot be evenly spread over the screen mesh, the ore layer is thick, and the screening effect of the ore through the screen is not good. The screening effect of the entire vibrating screen cannot be fully exerted, thus affecting the screening efficiency of the ore. Summary of the Invention

[0005] The purpose of the present invention is to provide a feeding device for improving the screening efficiency of optoelectronic ore dressing, which can effectively increase the utilization area of the screen mesh to solve the defects mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A feeding device for improving the screening efficiency of optoelectronic ore dressing includes a vibrating screen. The vibrating screen is provided with a plurality of layers of long strip-shaped screen meshes. One end of the screen mesh is inclined and lowered along the length direction. An inclined feeding plate is arranged above the vibrating screen. The feeding plate extends along the width direction of the screen mesh. The low end of the feeding plate faces the high end of the uppermost screen mesh. A plurality of guide strips are fixedly installed at the top of the feeding plate at uniform intervals along its inclined direction. The guide strips are in a V shape with the mouth facing the low end of the feeding plate.

[0008] As a further improvement, rotating shafts are fixedly installed on both sides of the cloth plate along the width direction of the screen. The two rotating shafts are coaxially arranged. A mounting plate corresponding to the rotating shaft is fixedly installed on the top of the topmost screen. The rotating shaft is rotatably installed on the corresponding mounting plate, and the cloth plate is rotated around the axis of the rotating shaft to change the inclination angle of the cloth plate.

[0009] As a further improvement, a fixing frame is also fixedly installed on the topmost screen. A cable with adjustable length is hinged between the fixing frame and the cloth plate. By adjusting the length of the cable, the cloth plate is driven to rotate around the axis of the rotating shaft.

[0010] As a further improvement, the cable includes a first connecting column. One end of the first connecting column is hinged on the fixing frame. One end of the first connecting column away from the fixing frame is rotatably connected to one end of a sleeve. The other end of the sleeve is internally threaded with a second connecting column. One end of the second connecting column extends out of the sleeve and is hinged on the cloth plate.

[0011] As a further improvement, a corner discharge port is provided at the lower end of the cloth plate. The corner discharge port includes a guide plate perpendicular to the topmost screen. The guide plate extends along the width direction of the screen. The extension line of the lower end of the cloth plate is located on the guide plate. Side plates bent at 90 degrees are respectively provided on both sides of the guide plate along the width direction of the cloth plate. The lower ends of the side plates are fixedly installed on the topmost screen. An outlet is provided between the lower end of the guide plate and the topmost screen.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. While the ore material slides down along the inclined cloth plate, on the one hand, it moves towards both sides along the width direction of the screen along the guide strip. On the other hand, the triangular guide strip can slow down the sliding speed of the ore material, so as to achieve the effects of improving the utilization area of the screen, reducing the feeding thickness, and evenly distributing the material, thereby slowing down the blockage of the screen and reducing the production operation and maintenance costs;

[0014] 2. When the ore material slides down from the lower end of the cloth plate, the ore material impacts on the guide plate and falls along the guide plate, thereby changing the angle at which the ore material falls onto the screen, making the falling direction of the ore material approximately perpendicular to the plane where the screen is located, so that the ore particles meeting the particle size requirements can efficiently pass through the screen downward, effectively improving the efficiency of the ore material passing through the screen;

[0015] 3. The second connecting column can be adjusted by rotating the sleeve, and the length extending outside the sleeve can be adjusted, so as to adjust the overall length of the cable. When the overall length of the cable is extended, the angle between the cloth plate and the horizontal plane is reduced, so that the feeding speed of the cloth plate is slowed down; when the overall length of the cable is shortened, the angle between the cloth plate and the horizontal plane is increased, so that the feeding speed of the cloth plate is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the cloth plate of the embodiment of the present invention;

[0019] Figure 3 is a schematic cross-sectional view of the cloth plate of the embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of the corner discharge port of the embodiment of the present invention;

[0021] Figure 5 is a schematic structural diagram of the cable of the embodiment of the present invention.

[0022] In the figure: 1 - vibrating screen; 2 - bracket; 3 - screening box; 4 - support spring; 5 - screen mesh; 6 - vibrating motor; 7 - cloth plate; 8 - guide bar; 9 - baffle; 10 - rotating shaft; 11 - mounting plate; 12 - corner discharge port; 13 - guide plate; 14 - side plate; 15 - top plate; 16 - discharge port; 17 - cable; 18 - first connecting column; 19 - sleeve; 20 - arc block; 21 - limiting part; 22 - second connecting column; 23 - feeding belt; 24 - fixing frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] Such as Figures 1 to 5As shown in the figure, a feeding device for improving the screening efficiency of optoelectronic ore dressing includes a vibrating screen 1. The vibrating screen 1 includes a support 2. Above the support 2, there is a screening box 3. A vertically extending support spring 4 is connected between the support 2 and the screening box 3. Inside the screening box 3, several layers of sieves 5 arranged up and down are fixedly installed. The sieves 5 are long strips extending left and right in the length direction, and the sieves 5 are inclined with the left side higher than the right side. A vibrating motor 6 is installed at the bottom of the screening box 3. The vibrating motor 6 drives the screening box 3 to vibrate up and down, so as to promote the ore particles with qualified particle size to pass downward through each sieve 5.

[0025] Above the left end of the vibrating screen 1, there is an inclined feeding plate 7. The feeding plate 7 is also inclined with the left side higher than the right side. The feeding plate 7 extends back and forth along the width direction of the sieve 5. The high end of the feeding plate 7 extends below the tail end of the feeding belt 23. The low end of the feeding plate 7 faces above the high end of the uppermost sieve 5. The ore material falls from the tail end of the feeding belt 23 to the high end of the feeding plate 7, and then can slide along the inclined feeding plate 7 to the uppermost sieve 5.

[0026] As Figure 2 and Figure 3 As shown in the figure, at the top of the feeding plate 7, a plurality of guide strips 8 are welded or fixedly installed by bolts at equal intervals along its inclined direction. The guide strips 8 are V-shaped with the mouth facing the low end of the feeding plate 7. There is an included angle of 116° between the two arms of the V-shaped guide strip 8; and the cross-section of the guide strip 8 is a right triangle. The bottom wall of the feeding plate 7 and the side of the guide strip 8 close to the low end of the feeding plate 7 are respectively the two right sides of the right triangle, and the side of the guide strip 8 close to the high end of the feeding plate 7 is the hypotenuse of the right triangle.

[0027] The guide strips 8 divert the ore material falling to the high end of the feeding plate 7 to both sides in the width direction of the sieve 5, so that the ore material is dispersed in the width direction of the sieve 5 before entering the vibrating screen 1. While the ore material slides down along the inclined feeding plate 7, on the one hand, it moves along the guide strips 8 to both sides in the width direction of the sieve 5, and on the other hand, the triangular guide strips 8 can slow down the sliding speed of the ore material, so as to achieve the effects of improving the utilization area of the sieve, reducing the feeding thickness, and evenly distributing the material.

[0028] On the front and rear sides of the cloth plate 7 along the width direction of the screen 5, there are respectively integrally formed baffles 9 that are bent upward to prevent the ore from falling off the front and rear sides of the cloth plate 7. On the outer sides of the two baffles 9 corresponding to the lower end of the cloth plate 7, rotating shafts 10 are distributed and welded. The two rotating shafts 10 are coaxially arranged, and both rotate shafts 10 extend forward and backward along the width direction of the screen 5. On the top of the high end of the uppermost screen 5, there is a mounting plate 11 corresponding to the rotating shaft 10, which is welded or fixedly installed by bolts. The rotating shaft 10 is rotatably installed at the upper end of the corresponding mounting plate 11 through bearings. The cloth plate 7 is rotated around the axis of the rotating shaft 10 to change the inclination angle of the cloth plate 7, thereby changing the feeding angle and feeding speed of the cloth plate 7, and adjusting the ore feeding amount of the cloth plate 7. Specifically, the angle between the cloth plate 7 and the horizontal plane is between 30° and 65°.

[0029] As Figure 2 and Figure 4 shown, at the lower end of the cloth plate 7, there is a corner discharge port 12. The corner discharge port 12 includes a guide plate 13 perpendicular to the uppermost screen 5. The guide plate 13 extends forward and backward along the width direction of the screen 5. The extension line of the lower end of the cloth plate 7 is located on the guide plate 13. On both sides of the guide plate 13 along the width direction of the cloth plate 7, there are respectively side plates 14 that are bent at a right angle toward the side close to the guide plate 13. At the upper ends of the two side plates 14 and the guide plate 13, there is also a top plate 15 welded. The lower ends of the side plates 14 are welded or fixedly installed on the uppermost screen 5. There is a discharge port 16 between the lower end of the guide plate 13 and the uppermost screen.

[0030] When the ore slides down from the lower end of the cloth plate 7, the ore impacts on the guide plate 13 and falls along the guide plate 13, thereby changing the angle at which the ore falls onto the screen 5, making the direction of the ore fall approximately perpendicular to the plane where the screen 5 is located. Thus, the ore particles with particle sizes meeting the requirements can efficiently pass through the screen 5 downward, and the ore particles with larger particle sizes slide toward the lower end of the screen 5 through the discharge port 16, which can effectively improve the efficiency of the ore passing through the screen 5.

[0031] On the top of the top plate 15, there is a portal-shaped fixing frame 24 welded or fixedly installed by bolts. Between the outer sides of the two baffles 9 corresponding to the high end of the cloth plate 7 and the fixing frame 24, there are respectively hinged cable stays 17 with adjustable lengths. By adjusting the lengths of the cable stays 17, the cloth plate 7 is driven to rotate around the axis of the rotating shaft 10.

[0032] In this embodiment, as Figure 5As shown in the figure, the cable 17 includes a first connecting column 18. One end of the first connecting column 18 is hinged to the fixing frame 24, and the end of the first connecting column 18 away from the fixing frame 24 is rotatably connected to one end of the sleeve 19. Inside one end of the sleeve 19, two oppositely arranged arc-shaped blocks 20 are fixedly installed by bolts. A through hole for the first connecting column 18 to pass through is provided between the two arc-shaped blocks 20. On the outer side of the end of the first connecting column 18 away from the fixing frame 24, two protruding limiting parts 21 are distributed along the axial direction. The first connecting column 18 located between the two limiting parts 21 passes through the through hole between the two arc-shaped blocks 20. Thus, while the sleeve 19 and the first connecting column 18 can rotate relative to each other, axial movement between the first connecting column 18 and the sleeve 19 can be prevented; the end of the sleeve 19 away from the first connecting column 18 is internally threaded with a second connecting column 22. One end of the second connecting column 22 extends out of the sleeve 19 and is hinged to the corresponding baffle 9.

[0033] By rotating the sleeve 19, the length of the second connecting column 22 extending out of the sleeve 19 can be adjusted, thereby adjusting the overall length of the cable 17. When the overall length of the cable 17 is extended, the angle between the cloth plate 7 and the horizontal plane is reduced, so that the feeding speed of the cloth plate 7 slows down; when the overall length of the cable 17 is shortened, the angle between the cloth plate 7 and the horizontal plane is increased, so that the feeding speed of the cloth plate 7 speeds up.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A material distribution device for improving the screening efficiency of photoelectric mineral separation, comprising a vibrating screen (1), wherein the vibrating screen (1) is provided with a plurality of layers of long strip screens (5), wherein one end of the screens (5) along the length direction is inclined and lowered, and characterized in that: A distributing plate (7) is arranged obliquely above the vibrating screen (1). The distributing plate (7) extends along the width direction of the screen (5). The lower end of the distributing plate (7) faces the upper end of the uppermost screen (5). A plurality of guide strips (8) are fixedly mounted on the top of the distributing plate (7) and are arranged evenly spaced along the oblique direction thereof. The guide strips (8) are V-shaped with their mouths facing the lower end of the distributing plate (7).

2. A material distribution device for improving photoelectric mineral separation screening efficiency as claimed in claim 1, characterized in that: The distribution plate (7) is respectively fixedly mounted with rotating shafts (10) on both sides along the width direction of the screen (5); the two rotating shafts (10) are coaxially arranged; a mounting plate (11) corresponding to the rotating shaft (10) is fixedly mounted on the top of the uppermost screen (5); the rotating shaft (10) is rotatably mounted on the corresponding mounting plate (11); the distribution plate (7) is rotated around the axis of the rotating shaft (10) to change the inclination angle of the distribution plate (7).

3. A material distribution device for improving photoelectric mineral separation screening efficiency as claimed in claim 2, characterized in that: A fixing frame (24) is also fixedly mounted on the uppermost screen (5), and a cable (17) with adjustable length is hinged between the fixing frame (24) and the material distribution plate (7). The length of the cable (17) is adjusted to drive the material distribution plate (7) to rotate around the axis of the rotating shaft (10).

4. A material distribution device for improving photoelectric mineral separation screening efficiency as claimed in claim 3, characterized in that: The pull cable (17) comprises a first connecting column (18), one end of which is hinged on the fixing frame (24), one end of which is away from the fixing frame (24) is rotatably connected to one end of a sleeve (19), one end of which is away from the first connecting column (18) is internally threadedly connected to a second connecting column (22), one end of which extends out of the sleeve (19) and is hinged on the cloth plate (7).

5. A material distribution device for improving photoelectric mineral separation screening efficiency as claimed in claim 1, characterized in that: The lower end of the material distribution plate (7) is provided with a corner discharge port (12), and the corner discharge port (12) comprises a material guide plate (13) arranged perpendicularly to the uppermost screen (5), and the material guide plate (13) extends along the width direction of the screen (5). The extension line of the lower end of the material distribution plate (7) is located on the material guide plate (13), and the material guide plate (13) is provided with side plates (14) bent at ninety degrees on both sides along the width direction of the material distribution plate (7), and the lower end of the side plate (14) is fixedly mounted on the uppermost screen (5), and a discharge port (16) is provided between the lower end of the material guide plate (13) and the uppermost screen (5).

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