A mine ore screening device of a multi-layer screening structure

Abstract

This utility model relates to the technical field of ore screening, and in particular to a multi-layer screening structure for mining ore screening. It not only actuates and conveys the feed material to prevent accumulation at the inlet, but also backflushes and blows the fine screen, using vibration to prevent clogging. The device includes a screening mechanism, a vibration mechanism, a drive mechanism, a conveying mechanism, and a backflushing mechanism. The vibration mechanism is mounted on the screening mechanism and drives the screen to vibrate. The drive mechanism is mounted on the vibration mechanism and drives it to rotate. The conveying mechanism is mounted on the drive mechanism and prevents ore accumulation. The backflushing mechanism is mounted on the screening mechanism and collects dust.

Description

Technical Field

[0001] This utility model relates to the field of ore screening technology, and in particular to a multi-layer screening structure for mine ore screening. Background Technology

[0002] Ore refers to a mineral aggregate from which useful components can be extracted or which has certain usable properties. It can be divided into metallic minerals and non-metallic minerals. The unit content of useful components (elements or minerals) in ore is called ore grade.

[0003] Existing ore screening devices, such as the dust-free ore grading and screening equipment disclosed in utility model patent application number 202421432050.2, mainly include a screening box, a first screening plate, and a second screening plate. A first discharge chute is opened on the right side wall of the screening box and below the first screening plate, and a second discharge chute is opened on the left side wall of the screening box and below the second screening plate. A servo motor is fixedly connected to one side wall of the screening box near the bottom. The output end of the servo motor extends into the interior of the screening box and is fixedly connected to a rotating disk. In use, the ore is poured into the feed hopper, so that the ore can enter the interior of the screening box. When the ore falls onto the surface of the first screening plate, the larger ore particles will remain on the surface of the first screening plate, while the smaller ore particles and dust impurities will fall onto the surface of the second screening plate.

[0004] However, most existing screening devices rely on gravity to allow the ore to roll naturally off the screen. The ore easily accumulates on the screen, and for screens with small mesh, vibration alone is insufficient to solve the problem of ore blockage, which greatly affects efficiency.

[0005] In view of the problems existing in the above-mentioned existing technologies, it is necessary to study and design a multi-layer screening structure for mine ore screening, so as to overcome the problems existing in the existing technologies. Summary of the Invention

[0006] To address the technical problems identified in the prior art, this invention provides a multi-layer screening structure for mining ore. This invention not only provides a conveying mechanism to prevent material accumulation at the feed inlet but also allows for backflushing and purging of the fine screen, combined with vibration to prevent clogging.

[0007] The technical means adopted in this utility model are as follows:

[0008] A multi-layer screening structure for mining ore includes a screening mechanism; it also includes a vibration mechanism, a drive mechanism, a conveying mechanism, and a backflushing mechanism. The vibration mechanism is installed on the screening mechanism and drives the screen to vibrate. The drive mechanism is installed on the vibration mechanism and drives the vibration mechanism to rotate. The conveying mechanism is installed on the drive mechanism and prevents ore accumulation. The backflushing mechanism is installed on the screening mechanism and collects dust. Ore is fed into the screening mechanism, the drive mechanism drives the conveying mechanism to rotate to prevent ore accumulation, the screening mechanism screens the ore, and the drive mechanism drives the vibration mechanism to rotate and vibrate the screen to enhance the screening effect. At the same time, the backflushing mechanism is activated to collect dust during the screening process and backflushes and blows the fine screen to prevent clogging.

[0009] Furthermore, the screening mechanism includes a screening box, a feeding hopper, a coarse screen, a fine screen, two sets of discharge hoppers, and a collection hopper. The bottom of the screening box is connected to the ground, and the interior of the screening box has a cavity. The bottom of the feeding hopper is connected to the top of the screening box. The coarse screen is installed at an angle inside the cavity of the screening box, and the fine screen is installed at an angle inside the cavity of the screening box and located below the coarse screen. Both sets of discharge hoppers are installed on the screening box and are connected to the interior of the cavity of the screening box. The top of the collection hopper is connected to the bottom of the screening box. The ore is fed from the feeding hopper into the cavity of the screening box. The coarse screen performs coarse screening of the ore, and the fine screen performs fine screening of the ore. The two sets of discharge hoppers discharge large and medium-sized ore respectively, and small ore is collected in the collection hopper and then discharged.

[0010] Furthermore, the vibration mechanism includes two sets of first rotating shafts, four sets of vibrating blocks, two sets of first pulleys, and a first belt. The two sets of first rotating shafts are rotatably installed in the cavity of the screening box and are located below the coarse screen and the fine screen, respectively. Each set of first rotating shafts is equipped with two sets of vibrating blocks. The two sets of first pulleys are respectively installed on the two sets of first rotating shafts, and the first belt is tensioned on the two sets of first pulleys. The drive mechanism drives the first rotating shaft connected to it to rotate, the first rotating shaft drives the first pulley connected to it to rotate, and the first pulley drives the other set of first pulleys and the first rotating shaft to rotate through the first belt. The two sets of first rotating shafts drive the four sets of vibrating blocks to rotate and strike the coarse screen and the fine screen, causing the coarse screen and the fine screen to vibrate and preventing the ore from clogging the coarse screen and the fine screen.

[0011] Furthermore, the drive mechanism includes a motor, a reducer, a transmission shaft, two sets of second pulleys, and a second belt. The bottom end of the motor is connected to the top end of the screening box, the output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the input end of the transmission shaft. The two sets of second pulleys are respectively mounted on the transmission shaft and the first rotating shaft, and the second belt is tensioned between the two sets of second pulleys. When the motor is started, the motor drives the transmission shaft to rotate through the reducer, and the transmission shaft drives the connected second pulleys to rotate. The two sets of second pulleys drive the first rotating shaft to rotate through the second belt.

[0012] Furthermore, the conveying mechanism includes a second rotating shaft, multiple sets of paddles, two sets of third pulleys, and a third belt. The second rotating shaft is rotatably installed in the cavity of the screening box. The multiple sets of paddles are all installed on the second rotating shaft. The two sets of third pulleys are respectively installed on the drive shaft and the second rotating shaft. The third belt is tensioned and installed between the two sets of third pulleys. The drive shaft drives the connected third pulleys to rotate. The two sets of third pulleys drive the second rotating shaft to rotate through the third belt. The second rotating shaft drives the multiple sets of paddles to rotate and convey the ore downwards, avoiding ore accumulation.

[0013] Furthermore, the backflushing mechanism includes a collection hood, a connecting pipe, a filter box, an extraction pipe, an air pump, an air delivery pipe, multiple sets of nozzles, and baffles. The bottom of the collection hood is connected to the top of the screening box, the connecting pipe is connected to the inside of the collection hood, the filter box is connected to the inside of the connecting pipe, the extraction pipe is connected to the inside of the filter box, the air pump inlet is connected to the inside of the extraction pipe, and the air pump outlet is connected to the inside of the air delivery pipe. Multiple sets of nozzles are installed in the cavity of the screening box and connected to the inside of the air delivery pipe. Baffles are installed in the cavity of the screening box. When the air pump is started, the dust in the cavity of the screening box enters the filter box through the collection hood and the connecting pipe. The filter box filters and collects the dust, preventing it from entering the extraction pipe and the air pump. Air is delivered to the multiple sets of nozzles through the air delivery pipe. Baffles are installed to prevent ore from damaging the multiple sets of nozzles.

[0014] Furthermore, it also includes multiple sets of nozzles with different spray angles; by setting multiple sets of nozzles with different spray angles, it is convenient to spray and sweep different positions of the fine screen, avoiding ore clogging of the fine screen.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This utility model provides a multi-layer screening structure for mining ore screening. The ore is fed into the screening mechanism, and the drive mechanism drives the conveying mechanism to rotate to avoid ore accumulation. The screening mechanism screens the ore, and at the same time, the drive mechanism drives the vibration mechanism to rotate and vibrate the screen to enhance the screening effect. At the same time, the backflushing mechanism is activated to collect the dust in the screening process and backflushing and blowing the fine screen to prevent clogging. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the isometric structure of this utility model;

[0019] Figure 2 This is a cross-sectional isometric structural diagram of the screening mechanism, conveying mechanism and backflushing mechanism of this utility model;

[0020] Figure 3 This is a cross-sectional isometric structural diagram of the vibration mechanism, drive mechanism and conveying mechanism of this utility model;

[0021] Figure 4 This is an isometric structural diagram of the recoil mechanism of this utility model.

[0022] The attached diagram is labeled as follows: 01, screening mechanism; 11, screening box; 12, feeding hopper; 13, coarse screen; 14, fine screen; 15, discharge hopper; 16, collection hopper; 02, vibration mechanism; 21, first rotating shaft; 22, vibrating block; 23, first pulley; 24, first belt; 03, drive mechanism; 31, electric motor; 32, reducer; 33, transmission shaft; 34, second pulley; 35, second belt; 04, conveying mechanism; 41, second rotating shaft; 42, baffle plate; 43, third pulley; 44, third belt; 05, backflushing mechanism; 51, collection hood; 52, connecting pipe; 53, filter box; 54, exhaust pipe; 55, air pump; 56, air delivery pipe; 57, nozzle; 58, baffle. Detailed Implementation

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0028] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0030] Example 1

[0031] This utility model discloses a multi-layer screening structure for mining ore screening, including a screening mechanism 01; it also includes a vibration mechanism 02, a drive mechanism 03, a conveying mechanism 04, and a backflushing mechanism 05. The vibration mechanism 02 is installed on the screening mechanism 01 and drives the screen to vibrate; the drive mechanism 03 is installed on the vibration mechanism 02 and drives the vibration mechanism 02 to rotate; the conveying mechanism 04 is installed on the drive mechanism 03 and prevents ore accumulation; the backflushing mechanism 05 is installed on the screening mechanism 01 and collects dust. The screening mechanism 01 includes a screening box 11, a feeding hopper 12, a coarse screen 13, a fine screen 14, and two sets of discharge bins. The bottom of the screening box 11 is connected to the ground, and the screening box 11 has an internal cavity. The bottom of the feeding hopper 12 is connected to the top of the screening box 11. The coarse screen 13 is installed at an angle inside the cavity of the screening box 11, and the fine screen 14 is installed at an angle inside the cavity of the screening box 11 and located below the coarse screen 13. Both sets of discharge hoppers 15 are installed on the screening box 11 and are connected to the cavity of the screening box 11. The top of the collection hopper 16 is connected to the bottom of the screening box 11. The vibration mechanism 02 includes two sets of first rotating shafts 21, four sets of vibrating blocks 22, two sets of first pulleys 23, and a third set of fourth rotating shafts 21. A belt 24 and two sets of first rotating shafts 21 are rotatably installed in the cavity of the screening box 11 and located below the coarse screen 13 and fine screen 14, respectively. Two sets of vibrating blocks 22 are installed on each set of first rotating shafts 21. Two sets of first pulleys 23 are respectively installed on the two sets of first rotating shafts 21. The first belt 24 is tensioned on the two sets of first pulleys 23. The drive mechanism 03 includes a motor 31, a reducer 32, a transmission shaft 33, two sets of second pulleys 34, and a second belt 35. The bottom end of the motor 31 is connected to the top end of the screening box 11, and the output end of the motor 31 is connected to the input end of the reducer 32. The output end of the speed machine 32 is connected to the input end of the transmission shaft 33. Two sets of second pulleys 34 are respectively installed on the transmission shaft 33 and the first rotating shaft 21. The second belt 35 is tensioned between the two sets of second pulleys 34. The conveying mechanism 04 includes a second rotating shaft 41, multiple sets of baffles 42, two sets of third pulleys 43 and a third belt 44. The second rotating shaft 41 is rotatably installed in the cavity of the screening box 11. Multiple sets of baffles 42 are all installed on the second rotating shaft 41. The two sets of third pulleys 43 are respectively installed on the transmission shaft 33 and the second rotating shaft 41. The third belt 44 is tensioned between the two sets of third pulleys 43.During operation, the ore is first fed from the hopper 12 into the cavity of the screening box 11. The motor 31 is started, and the motor 31 drives the drive shaft 33 to rotate through the reducer 32. The coarse screen 13 performs coarse screening of the ore, and the fine screen 14 performs fine screening of the ore. The drive shaft 33 drives the connected second pulley 34 to rotate. The two sets of second pulleys 34 drive the first rotating shaft 21 to rotate through the second belt 35. The first rotating shaft 21 drives the connected first pulley 23 to rotate. The first pulley 23, through the first belt 24, drives another set of first pulleys 23 and the first rotating shaft 21 to rotate. The two sets of first rotating shafts 21 drive four sets of vibrating blocks 22 to rotate, striking the coarse screen 13 and the fine screen 14, causing them to vibrate and preventing ore from clogging the coarse screen 13 and the fine screen 14. Two sets of discharge hoppers 15 discharge large and medium-sized ores respectively, while small ores are collected in the collection hopper 16 and then discharged.

[0032] Example 2

[0033] like Figures 1 to 4As shown, this utility model discloses a multi-layer screening structure for mining ore, based on Embodiment 1. The backflushing mechanism 05 includes a collection hood 51, a connecting pipe 52, a filter box 53, an exhaust pipe 54, an air pump 55, an air delivery pipe 56, multiple sets of nozzles 57, and a baffle 58. The bottom end of the collection hood 51 is connected to the top of the screening box 11. The connecting pipe 52 is connected to the inside of the collection hood 51. The filter box 53 is connected to the inside of the connecting pipe 52. The exhaust pipe 54 is connected to the inside of the filter box 53. The air inlet of the air pump 55 is connected to the inside of the exhaust pipe 54. The exhaust port of the air pump 55 is connected to the inside of the air delivery pipe 56. The internal structure is interconnected, with multiple sets of nozzles 57 installed inside the screening box 11 and connected to the air supply pipe 56. A baffle 58 is also installed inside the screening box 11. The nozzles 57 have different spray angles. During operation, ore is first fed from the hopper 12 into the cavity of the screening box 11. The motor 31 is started, and it drives the drive shaft 33 to rotate via the reducer 32. The coarse screen 13 performs coarse screening of the ore, and the fine screen 14 performs fine screening. The drive shaft 33... The second pulley 34 connected to it rotates. The two sets of second pulleys 34 drive the first shaft 21 to rotate via the second belt 35. The first shaft 21 drives the first pulley 23 connected to it to rotate. The first pulley 23 drives another set of first pulleys 23 and the first shaft 21 to rotate via the first belt 24. The two sets of first shafts 21 drive four sets of vibrating blocks 22 to rotate and strike the coarse screen 13 and the fine screen 14, causing them to vibrate and preventing ore from clogging the coarse screen 13 and the fine screen 14. The two sets of discharge hoppers 15 respectively discharge large and medium ore. Small ores are collected in the collection hopper 16 and then discharged. During the screening process, the air pump 55 is activated to draw air. The dust in the cavity of the screening box 11 enters the filter box 53 through the collection cover 51 and the connecting pipe 52. The filter box 53 filters and collects the dust to prevent it from entering the exhaust pipe 54 and the air pump 55. The air is delivered to multiple sets of nozzles 57 through the air supply pipe 56. The baffle 58 is set to prevent the ore from damaging the multiple sets of nozzles 57. By setting multiple sets of nozzles 57 with different spray angles, it is convenient to spray and blow at different positions of the fine screen 14 to prevent the ore from clogging the fine screen 14.

[0034] The electric motor 31, reducer 32, and air pump 55 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-layer screening structure for screening mine ore, comprising a screening mechanism (01); characterized in that: The multi-layer screening structure mining ore screening device further includes: a vibration mechanism (02), a drive mechanism (03), a conveying mechanism (04), and a backflushing mechanism (05). The vibration mechanism (02) is installed on the screening mechanism (01) and drives the screen to vibrate. The drive mechanism (03) is installed on the vibration mechanism (02) and drives the vibration mechanism (02) to rotate. The conveying mechanism (04) is installed on the drive mechanism (03) and prevents ore accumulation. The backflushing mechanism (05) is installed on the screening mechanism (01) and collects dust.

2. The multi-layer screening structure mining ore screening device according to claim 1, characterized in that: The screening mechanism (01) includes: a screening box (11), a feeding hopper (12), a coarse screen (13), a fine screen (14), two sets of discharge hoppers (15) and a collection hopper (16); the bottom end of the screening box (11) is connected to the ground, and the screening box (11) has a cavity inside. The bottom end of the feeding hopper (12) is connected to the top end of the screening box (11). The coarse screen (13) is installed at an angle in the cavity of the screening box (11), and the fine screen (14) is installed at an angle in the cavity of the screening box (11) and located below the coarse screen (13). The two sets of discharge hoppers (15) are installed on the screening box (11) and are connected to the cavity of the screening box (11). The top end of the collection hopper (16) is connected to the bottom end of the screening box (11).

3. The multi-layer screening structure mining ore screening device according to claim 1, characterized in that: The vibration mechanism (02) includes: two sets of first rotating shafts (21), four sets of vibrating blocks (22), two sets of first pulleys (23) and a first belt (24); the two sets of first rotating shafts (21) are rotatably installed in the cavity of the screening box (11) and are respectively located below the coarse screen (13) and the fine screen (14). Two sets of vibrating blocks (22) are installed on each set of first rotating shafts (21), the two sets of first pulleys (23) are respectively installed on the two sets of first rotating shafts (21), and the first belt (24) is tensioned on the two sets of first pulleys (23).

4. The multi-layer screening structure mining ore screening device according to claim 1, characterized in that: The drive mechanism (03) includes: a motor (31), a reducer (32), a transmission shaft (33), two sets of second pulleys (34) and a second belt (35); the bottom end of the motor (31) is connected to the top end of the screening box (11), the output end of the motor (31) is connected to the input end of the reducer (32), the output end of the reducer (32) is connected to the input end of the transmission shaft (33), the two sets of second pulleys (34) are respectively installed on the transmission shaft (33) and the first rotating shaft (21), and the second belt (35) is tensioned between the two sets of second pulleys (34).

5. A multi-layer screening structure for mine ore as described in claim 1, characterized in that: The conveying mechanism (04) includes: a second rotating shaft (41), multiple sets of levers (42), two sets of third pulleys (43) and a third belt (44); the second rotating shaft (41) is rotatably installed in the cavity of the screening box (11), the multiple sets of levers (42) are all installed on the second rotating shaft (41), the two sets of third pulleys (43) are respectively installed on the transmission shaft (33) and the second rotating shaft (41), and the third belt (44) is tensioned between the two sets of third pulleys (43).

6. The multi-layer screening structure mining ore screening device according to claim 1, characterized in that: The backwash mechanism (05) includes: a collection cover (51), a connecting pipe (52), a filter box (53), an air extraction pipe (54), an air pump (55), an air delivery pipe (56), multiple sets of nozzles (57), and a baffle (58); the bottom end of the collection cover (51) is connected to the top end of the screening box (11), the connecting pipe (52) is connected to the inside of the collection cover (51), the filter box (53) is connected to the inside of the connecting pipe (52), the air extraction pipe (54) is connected to the inside of the filter box (53), the air inlet of the air pump (55) is connected to the inside of the air extraction pipe (54), the air outlet of the air pump (55) is connected to the inside of the air delivery pipe (56), the multiple sets of nozzles (57) are all installed in the cavity of the screening box (11) and connected to the inside of the air delivery pipe (56), and the baffle (58) is installed in the cavity of the screening box (11).

7. A multi-layer screening structure mine ore screening device according to claim 6, characterized in that: The spray angles of the multiple sets of nozzles (57) are all different.

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