A screening machine for mining

Abstract

This utility model relates to the field of mining technology, specifically a screening machine for mining. It includes a support body and a screening box rotatably connected to the support body. The screening box has a feed inlet, and a screen is installed on the inner wall of the screening box. A first motor is installed at the lower part of the inner wall of the screening box. An elliptical turntable is fixedly connected to the output end of the first motor. When the first motor drives the elliptical turntable to rotate, the tip of the elliptical turntable is movably connected to the bottom of the screen. This application utilizes the first motor to drive the elliptical turntable to rotate. The elliptical turntable continuously impacts the screen, and with the cooperation of springs, the screen vibrates up and down continuously, thereby shaking the ore and causing fine ore to enter the lower half of the screening box along the screen. A second motor drives the main gear to rotate, which in turn drives the driven gear and connecting column to rotate. The connecting column causes the screening box to swing back and forth, enabling the separation and discharge of coarse and fine ore.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, specifically a screening machine for mining. Background Technology

[0002] Mineral resources are important industrial raw materials. Mining is the technology and science of extracting mineral resources from the earth's crust and surface. After the ore is mined, it needs to be preliminarily screened according to its particle size before further processing or transportation. Screening machines can separate raw materials such as ores, rocks, and sand of different particle sizes and shapes from the ore, and they are widely used in the mining process.

[0003] Currently, commonly used screening machines for mining generally employ either flat or inclined screen structures. Flat screens have screens laid flat, and a vibrating motor typically drives the screen to vibrate, causing ore smaller than the mesh size to fall off. Larger pieces of ore on the screen require manual cleaning. Furthermore, due to the relatively small vibration amplitude, the screen is prone to clogging during screening, resulting in low efficiency and poor screening effect. Inclined screens, on the other hand, have screens set at an incline. As the ore rolls down under gravity, smaller pieces fall onto the screen, while larger pieces roll off the screen. Inclined screens can also be used with vibrating motors. The residence time of ore on the screen depends on the screen length and inclination. If the screen is not properly configured, incomplete screening during the rolling process can lead to a mixture of large and small ore. Summary of the Invention

[0004] The purpose of this invention is to provide a screening machine for mining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screening machine for mining, comprising a support body and a screening box rotatably connected to the support body, the screening box being provided with a feed inlet, a screen being installed on the inner side wall of the screening box, a first motor being provided at the lower part of the inner wall of the screening box, an elliptical turntable being fixedly connected to the output end of the first motor, and the tip of the elliptical turntable being movably connected to the bottom of the screen when the first motor drives the elliptical turntable to rotate.

[0006] Preferably, the upper surface of the screen is provided with a sleeve, and the top of the inner wall of the screening box is provided with a sleeve rod, the sleeve rod being positioned corresponding to the sleeve, and a spring being sleeved on the sleeve rod.

[0007] Furthermore, one end of the spring is connected to the top of the inner wall of the screening box, and the other end is connected to the sleeve.

[0008] Furthermore, a coarse material trough is provided on the screening box at a position corresponding to the height of the screen, and a fine material trough is provided near the bottom of the screening box.

[0009] Preferably, the coarse material trough and the fine material trough are located on opposite sides of the screening box.

[0010] Preferably, a second motor is provided on the support body, a main gear is fixedly connected to the output shaft end of the second motor, a driven gear is connected to the screening box, and the main gear and the driven gear are meshed together.

[0011] Furthermore, the support body has two connecting columns that are rotatably connected to the support body and are positioned opposite each other. The outer wall of the screening box is fixedly connected to the two connecting columns, and the driven gear is fixedly sleeved on one of the connecting columns.

[0012] Furthermore, a cover plate is connected to the upper surface of the feed inlet.

[0013] Furthermore, the fine material trough outlet is provided with a first blocking plate, and the coarse material trough outlet is provided with a second blocking plate.

[0014] Furthermore, the support body is provided with an operation panel, and the bottom of the support body is provided with a moving part.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This invention involves pouring ore into the screening box through the feed inlet. A first motor drives an elliptical turntable to rotate, which continuously impacts the lower surface of the screen. With the help of springs, the screen vibrates up and down, shaking the ore and preventing it from accumulating on the upper surface. Fine ore enters the lower part of the screening box along the screen. A second motor drives the main gear to rotate, which in turn drives the driven gear and connecting column. The connecting column causes the screening box to swing back and forth, separating coarse and fine ore for discharge, improving work efficiency and saving manpower. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a cross-sectional view of the screening box in this utility model; Figure 3 This is a schematic diagram of the screening box in this utility model.

[0017] In the diagram: 1. Base plate; 2. Mounting plate; 3. Connecting column; 4. Screening box; 5. Feed inlet; 6. Screen; 7. Sleeve; 8. Sleeve rod; 9. Spring; 10. Mounting frame; 11. First motor; 12. Elliptical turntable; 13. Second motor; 14. Main gear; 15. Driven gear; 16. Fine material trough; 17. Coarse material trough; 18. Cover plate; 19. First blocking plate; 20. Second blocking plate; 21. Operation panel; 22. Mounting block; 23. Roller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] See Figure 1 and Figure 2 This utility model provides a technical solution: a screening machine for mining, including a support body and a screening box 4 rotatably connected to the support body. The screening box 4 is provided with a feed inlet 5 at the top. A screen 6 is installed on the inner side wall of the screening box 4. A first motor 11 is provided at the lower part of the inner wall of the screening box 4. An elliptical turntable 12 is fixedly connected to the output end of the first motor 11. When the first motor 11 drives the elliptical turntable 12 to rotate, the tip of the elliptical turntable 12 is movably connected to the bottom of the screen 6.

[0021] In one specific embodiment of this utility model, the support body includes a base plate 1, on which two opposing mounting plates 2 are vertically arranged. A connecting column 3 is rotatably connected to the mounting plate 2 via a bearing. The outer wall of the screening box 4 is fixedly connected to the end of the connecting column 3, so that when the connecting column 3 rotates, it can drive the screening box 4 to rotate and tilt.

[0022] This invention utilizes a drive component of a first motor 11 at the bottom of the screening box 4. The first motor 11 drives the elliptical turntable 12 to rotate. Due to the rotation trajectory of the elliptical turntable 12, part of the elliptical turntable 12 contacts the bottom of the screen 6 while part does not. This periodic movement allows the elliptical turntable 12 to lift the screen 6, and then the screen 6 falls under the action of gravity. This allows the screen 6 to achieve a large amplitude of vibration, thereby efficiently screening the coarse and fine ores on the screen 6. The fine ores fall through the screen holes, while the coarse ores remain on the screen 6. At the same time, the large up-and-down movement of the screen 6 will not cause the screen holes to become clogged.

[0023] See Figure 2 More preferably, the present invention provides a sleeve 7 on the upper surface of the screen 6, and a sleeve rod 8 is provided at the top of the inner wall of the screening box 4. The sleeve rod 8 is positioned corresponding to the sleeve 7, and a spring 9 is sleeved on the sleeve rod 8.

[0024] Specifically, in this embodiment, two sleeves 7 are provided and are symmetrically positioned on the screen 6. Correspondingly, two sleeve rods 8 and two springs 9 are also provided, thereby ensuring that the external forces on the screen 6 are symmetrical and the screen 6 will not tilt.

[0025] When the screen 6 is lifted upwards, it falls freely under the action of gravity. In order to improve the vibration of the screen's reciprocating motion, this utility model also provides a structure to push the screen 6 downwards. When the screen 6 moves upwards, the sleeve 7 moves upwards synchronously. When the sleeve 7 contacts the spring 9, the screen 6 and the sleeve 7 decelerate, and the spring 9 begins to compress and store energy. When the screen 6 and the sleeve 7 move to the highest point, the spring 9 releases, causing the screen 6 and the sleeve 7 to accelerate downwards, thereby improving the screening efficiency and screening effect.

[0026] Furthermore, one end of the spring 9 is connected to the top of the inner wall of the screening box 4, and the other end is connected to the sleeve 7. By connecting both ends of the spring 9 to the top wall of the screening box 4 and the sleeve 7, the screen 6 can vibrate up and down at a high frequency with the cooperation of the spring 9, thereby continuously shaking the ore. This prevents the ore from accumulating on the upper surface of the screen 6, so that the screen 6 is not blocked by fine ore. The fine ore enters the lower half of the screening box 4 through the screen holes.

[0027] Furthermore, in this embodiment, a coarse material trough 17 is provided on the screening box 4 at a position corresponding to the height of the screen 6, and a fine material trough 16 is provided near the bottom of the screening box 4. After tilting the screening box 4, the coarse material trough 17 can collect and clean the screened coarse ore material, and the fine material trough 16 can collect the fine ore material that has fallen off during screening.

[0028] To prevent the coarse and fine ore from mixing again when the coarse and fine ore troughs 17 and 16 are located on the same side during ore collection, this embodiment places the coarse and fine ore troughs 17 on opposite sides of the screening box 4. When the coarse ore trough 17 is tilted to pour out coarse ore, the fine ore moves towards the coarse ore trough 17 and does not fall out of the fine ore trough 16, and vice versa. When the fine ore trough 16 is tilted to pour out fine ore, the coarse ore moves towards the fine ore trough 16 and does not fall out of the coarse ore trough 17.

[0029] See Figure 2 Furthermore, in order to achieve electric control, this embodiment provides a second motor 13 on the support body. The output shaft end of the second motor 13 is fixedly connected to a main gear 14, and a driven gear 15 is fixedly sleeved on the connecting column 3. The main gear 14 and the driven gear 15 are meshed together.

[0030] The support body is equipped with an operation panel 21, which is connected to the first motor 11 and the second motor 13 respectively, so that the first motor 11 and the second motor 13 can be driven to work through the operation panel 21.

[0031] By using the second motor 13 to rotate forward or reverse, the main gear 14 and the driven gear 15 are driven to rotate forward or reverse, thereby tilting the screening box 4 forward or backward, so as to facilitate the discharge of coarse ore through the coarse material trough 17 or fine ore through the fine material trough 16.

[0032] Furthermore, a cover plate 18 is connected to the upper surface of the feed inlet 5 to facilitate opening and closing of the feed inlet 5.

[0033] See Figure 3 Furthermore, the outlet of the fine material trough 16 is provided with a first blocking plate 19 to facilitate the control of the opening and closing state of the fine material trough 16; the outlet of the coarse material trough 17 is provided with a second blocking plate 20 to facilitate the control of the opening and closing state of the coarse material trough 17.

[0034] Furthermore, the bottom of the support body in this embodiment is provided with a movable component. Specifically, four mounting blocks 22 are fixedly connected to the lower surface of the base plate 1, and rollers 23 are rotatably connected to the inner sidewalls of the mounting blocks 22. The rollers 23 have a locking function. This facilitates the movement and fixation of the screening machine of this utility model.

[0035] The working principle of this utility model is as follows: Ore is poured into the screening box 4 through the feed inlet 5. The first motor 11 drives the elliptical turntable 12 to rotate. The elliptical turntable 12 continuously impacts the lower surface of the screen 6. With the cooperation of the spring 9, the screen 6 continuously vibrates up and down, thus shaking the ore continuously. This prevents the ore from accumulating on the upper surface of the screen 6, preventing the screen 6 from being blocked by fine ore. The fine ore enters the lower half of the screening box 4 through the screen holes under the vibration of the screen. After the ore screening is completed, the second motor 13 drives the main gear 14 to rotate. The main gear 14 drives the driven gear 15 and the connecting column 3 to rotate. The connecting column 3 causes the screening box 4 to tilt. When the screening box 4 tilts backward, the coarse ore is discharged along the coarse material trough 17. When the screening box 4 tilts forward, the fine ore is discharged along the fine material trough 16.

[0036] This utility model of a screening machine for mining can prevent screen blockage, eliminates the need for equipment cleaning, and can separate coarse and fine ore for discharge, thereby improving work efficiency and saving manpower.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening machine for mining, characterized in that: The system includes a support body and a screening box (4) rotatably connected to the support body. The screening box (4) is provided with a feed inlet (5). A screen (6) is installed on the inner side wall of the screening box (4). A first motor (11) is provided at the lower part of the inner wall of the screening box (4). An elliptical turntable (12) is fixedly connected to the output end of the first motor (11). When the first motor (11) drives the elliptical turntable (12) to rotate, the tip of the elliptical turntable (12) is movably connected to the bottom of the screen (6). The support body is provided with a second motor (13), and the output shaft end of the second motor (13) is fixedly connected to a main gear (14). The screening box (4) is connected to a driven gear (15), and the main gear (14) and the driven gear (15) are meshed together. The support body has two connecting columns (3) that are opposite to each other and rotatably connected to the support body. The outer wall of the screening box (4) is fixedly connected to the two connecting columns (3). The driven gear (15) is fixedly sleeved on one of the connecting columns (3).

2. The screening machine for mining according to claim 1, characterized in that: The upper surface of the screen (6) is provided with a sleeve (7), and the top of the inner wall of the screening box (4) is provided with a sleeve rod (8). The sleeve rod (8) is positioned corresponding to the sleeve (7), and a spring (9) is sleeved on the sleeve rod (8).

3. The screening machine for mining according to claim 2, characterized in that: One end of the spring (9) is connected to the top of the inner wall of the screening box (4), and the other end is connected to the sleeve (7).

4. The screening machine for mining according to claim 1, characterized in that: The screening box (4) is provided with a coarse material trough (17) at a position corresponding to the height of the screen (6), and the screening box (4) is provided with a fine material trough (16) near the bottom.

5. The screening machine for mining according to claim 4, characterized in that: The coarse material trough (17) and the fine material trough (16) are located on opposite sides of the screening box (4).

6. The screening machine for mining according to claim 1, characterized in that: The upper surface of the feed inlet (5) is connected to a cover plate (18).

7. The screening machine for mining according to claim 4, characterized in that: The outlet of the fine material trough (16) is provided with a first blocking plate (19), and the outlet of the coarse material trough (17) is provided with a second blocking plate (20).

8. The screening machine for mining according to claim 1, characterized in that: The support body is provided with an operation panel (21), and the bottom of the support body is provided with a moving part.

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