Screening device for mineral separation

Abstract

The utility model discloses a screening device for mineral separation, which belongs to the technical field of screening, and comprises a support frame, the top of the support frame is fixedly connected with a first shell, the bottom of the first shell is fixedly connected with a discharging hopper, the outer surface of the first shell is fixedly connected with a second shell, the top of the second shell is fixedly connected with a feeding hopper, and the feeding hopper is fixedly connected with a discharging hopper. The inner walls of the two sides of the first shell are rotationally connected with a rotating cylinder, a plurality of through holes which are annularly distributed at equal intervals are formed in the outer surface of the rotating cylinder, the movable dredging assembly is used for screening ore, and the movable dredging assembly drives a gear and a rack to move in a meshed mode through a second motor; the connecting frame and the scraping plate at the bottom of the connecting frame slide in the horizontal direction, the elastic conical blocks on the scraping plate make movable contact with the through holes in the outer surface of the rotating cylinder, blocked screen holes are effectively dredged, the screening efficiency is remarkably improved, it is ensured that fine-fraction minerals can smoothly pass through the screen holes, and the blocking problem in the screening process is solved.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, specifically to a screening device for mineral processing. Background Technology

[0002] In mining production, ore screening is a crucial step. The purpose of screening is to classify ores according to different particle sizes, compositions, or qualities to facilitate subsequent processing and utilization.

[0003] Chinese utility model patent CN214211206U discloses a dust filtration and screening device for mineral processing, including a housing. The outer wall of the housing has an inlet, a stone outlet, and a powder outlet. The inner wall of the housing is rotatably connected to a first rotating shaft and two second rotating shafts. Two support plates are fixedly connected to the top of the housing. One support plate is fixedly connected to the inner wall of the housing via a filter plate. The outer wall of the filter plate has multiple filter holes, and a collecting plate is fixedly connected to the bottom of the filter plate. This utility model, through the coordinated operation of the second rotating shaft, support plate, filter plate, collecting plate, first conveyor belt, motor, feeding device, filtering device, and connecting mechanism, simultaneously drives the feeding device, filtering device, and first conveyor belt to feed, screen, and discharge ore. Compared to screening machines, this device can continuously screen ore, with shorter screening time and higher efficiency.

[0004] Although the device has many beneficial effects, the following problems still exist: Although the screening device can continuously screen ores with shorter screening time and higher efficiency, the screen holes are prone to clogging during use. When the screen holes are clogged, fine-grained minerals cannot pass through the screen holes, resulting in low screening efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a screening device for mineral processing, which solves the aforementioned problems.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a screening device for mineral processing, comprising a support frame, a first housing fixedly connected to the top of the support frame, a discharge hopper fixedly connected to the bottom of the first housing, a second housing fixedly connected to the outer surface of the first housing, a feed hopper fixedly connected to the top of the second housing, a rotating cylinder rotatably connected between the inner walls of the two sides of the first housing, and a plurality of annularly distributed through holes on the outer surface of the rotating cylinder, further comprising:

[0007] A mobile unblocking assembly, located between a first housing and a rotating cylinder, is used to unblock multiple through holes;

[0008] A screening assembly, located inside a rotating drum, is used to screen ore.

[0009] Preferably, the mobile unblocking assembly includes a rack, a connecting frame, a scraper, a gear, and a second motor. A rack is fixedly connected between the inner walls of the two sides of the first housing. A connecting frame is slidably connected to the inner wall of the top of the first housing. A gear is rotatably connected inside the connecting frame. A second motor is fixedly installed on the outer surface of the connecting frame. The output end of the second motor is fixedly connected to the gear. The gear meshes with the rack. A scraper is fixedly connected to the bottom of the connecting frame. A plurality of equidistantly distributed elastic conical blocks are fixedly connected to the bottom of the scraper. The plurality of elastic conical blocks are in movable contact with a plurality of through holes.

[0010] Preferably, the screening assembly includes spiral blades, a rotating shaft, and stirring blocks. The second housing is hollow. A rotating shaft is rotatably connected between the second housing and the inner wall of the first chamber door. Multiple annularly distributed stirring blocks are fixedly connected to the outer surface of the rotating shaft inside the rotating cylinder. The multiple stirring blocks are arranged in a π-shaped structure. Spiral blades are fixedly connected to the outer surface of the rotating shaft inside the second housing.

[0011] Preferably, a protective shell is fixedly connected to the outer surface of the second housing, and a first pulley and a second pulley are rotatably connected inside the protective shell. The second pulley is located above the first pulley, and a belt is sleeved between the first pulley and the second pulley. The second pulley is fixedly connected to the helical blade, and a first motor is fixedly installed on the outer surface of the support frame. The output end of the first motor is fixedly connected to the first pulley.

[0012] Preferably, a first door is hinged to the outer surface of the first housing, and a second door is hinged to the outer surface of the rotating cylinder.

[0013] Preferably, a PLC controller is fixedly installed on the outer surface of the support frame, and both the first motor and the second motor are controlled by the PLC controller.

[0014] Compared with the prior art, the present invention provides a screening device for mineral processing, which has the following advantages:

[0015] The aforementioned mineral processing screening device features a mobile unblocking component that uses a second motor to drive the meshing motion of a gear and rack, causing the connecting frame and its bottom scraper to slide horizontally. Multiple elastic conical blocks on the scraper make active contact with the through holes on the outer surface of the rotating cylinder, effectively unblocking the clogged screen holes, significantly improving screening efficiency, ensuring that fine-grained minerals can pass smoothly through the screen holes, and reducing clogging problems during the screening process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the spiral blade of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rotating cylinder of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the stirring block of this utility model.

[0021] In the diagram: 1. Support frame; 2. First housing; 3. Second housing; 4. Feed hopper; 5. Protective shell; 6. First motor; 7. PLC controller; 8. First door; 9. Discharge hopper; 10. First pulley; 11. Second pulley; 12. Belt; 13. Spiral blade; 14. Rotating shaft; 15. Rotating cylinder; 16. Second door; 17. Through hole; 18. Rack; 19. Connecting frame; 20. Scraper; 21. Gear; 22. Second motor; 23. Mixing block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0023] Please see Figures 1-5 This utility model provides a technical solution:

[0024] A screening device for mineral processing includes a support frame 1, a first housing 2 fixedly connected to the top of the support frame 1, a discharge hopper 9 fixedly connected to the bottom of the first housing 2, a second housing 3 fixedly connected to the outer surface of the first housing 2, a feed hopper 4 fixedly connected to the top of the second housing 3, and a rotating cylinder 15 rotatably connected between the inner walls of the two sides of the first housing 2. The outer surface of the rotating cylinder 15 has multiple annularly spaced through holes 17. The device also includes:

[0025] A mobile unblocking assembly is located between the first housing 2 and the rotating cylinder 15 and is used to unblock multiple through holes 17.

[0026] The screening component is located inside the rotating cylinder 15 and is used to screen the ore. The ore enters the second shell 3 through the feed hopper 4, and the ore particles that meet the particle size requirements fall into the discharge hopper 9 at the bottom of the first shell 2 through the through hole 17 and are finally discharged from the device.

[0027] Furthermore, the mobile unblocking assembly includes a rack 18, a connecting frame 19, a scraper 20, a gear 21, and a second motor 22. The rack 18 is fixedly connected between the inner walls of both sides of the first housing 2. The connecting frame 19 is slidably connected to the inner wall of the top of the first housing 2. The gear 21 is rotatably connected inside the connecting frame 19. The second motor 22 is fixedly mounted on the outer surface of the connecting frame 19. The output end of the second motor 22 is fixedly connected to the gear 21, and the gear 21 meshes with the rack 18. A second motor 22 is fixedly connected to the bottom of the connecting frame 19. The scraper 20 has multiple equidistantly distributed elastic conical blocks fixedly connected to its bottom. These elastic conical blocks are in active contact with multiple through holes 17. The output end of the second motor 22 drives the gear 21 to rotate. The meshing connection between the gear 21 and the rack 18 causes the connecting frame 19 to slide horizontally on the top inner wall of the first housing 2. The scraper 20 at the bottom of the connecting frame 19 moves accordingly, and the multiple elastic conical blocks on it are in active contact with the through holes 17 on the outer surface of the rotating cylinder 15, which plays a role in clearing the blockage and preventing the ore from clogging the through holes 17.

[0028] Furthermore, the screening assembly includes a spiral blade 13, a rotating shaft 14, and a stirring block 23. The second housing 3 is hollow, and the rotating shaft 14 is rotatably connected between the second housing 3 and the inner wall of the first box door 8. Multiple annularly distributed stirring blocks 23 are fixedly connected to the outer surface of the rotating shaft 14 inside the rotating cylinder 15. The multiple stirring blocks 23 are arranged in a π-shaped structure. The spiral blade 13 is fixedly connected to the outer surface of the rotating shaft 14 inside the second housing 3. The rotating shaft 14 drives the spiral blade 13 to rotate, so that the ore subsequently falls into the rotating cylinder 15. The rotating shaft 14 simultaneously drives the multiple stirring blocks 23 to rotate. The contact between the stirring blocks 23 and the ore allows the ore to be fully agitated inside the rotating cylinder 15.

[0029] Furthermore, a protective shell 5 is fixedly connected to the outer surface of the second housing 3. A first pulley 10 and a second pulley 11 are rotatably connected inside the protective shell 5. The second pulley 11 is located above the first pulley 10. A belt 12 is sleeved between the first pulley 10 and the second pulley 11. The second pulley 11 is fixedly connected to the spiral blade 13. A first motor 6 is fixedly installed on the outer surface of the support frame 1. The output end of the first motor 6 is fixedly connected to the first pulley 10. The output end of the first motor 6 drives the first pulley 10 to rotate. Through the transmission of the belt 12, the second pulley 11 also rotates, thereby driving the rotating shaft 14 fixedly connected to it to rotate.

[0030] Furthermore, the outer surface of the first housing 2 is hinged to a first door 8, and the outer surface of the rotating cylinder 15 is hinged to a second door 16. Operators can open the first door 8 and the second door 16 to clean and maintain the rotating cylinder 15 and the second housing 3.

[0031] Furthermore, a PLC controller 7 is fixedly installed on the outer surface of the support frame 1. The first motor 6 and the second motor 22 are both controlled by the PLC controller 7. The operator first starts the entire screening device through the PLC controller 7. As the central control unit, the PLC controller 7 is responsible for coordinating and controlling the operation of each component.

[0032] Working principle: When the operator needs to use this mineral processing screening device, the ore enters the second housing 3 through the feed hopper 4. The PLC controller 7 sends a start signal to the first motor 6. The output of the first motor 6 drives the first pulley 10 to rotate. Through the transmission of the belt 12, the second pulley 11 also rotates, thereby driving the rotating shaft 14 fixedly connected to it to rotate. The rotating shaft 14 drives the spiral blades 13 to rotate, so that the ore then falls into the rotating drum 15. The stirring block 23 contacts the ore, which can make the ore fully agitated in the rotating drum 15. The rotation of the rotating shaft 14 drives the rotating drum 15 to rotate in the first housing 2. At the same time, the PLC controller 7 also starts the second motor 22. The output of the second motor 22 drives the gear 21 to rotate. The meshing connection between gear 21 and rack 18 allows connecting frame 19 to slide horizontally on the top inner wall of the first housing 2. The scraper 20 at the bottom of connecting frame 19 moves accordingly, and multiple elastic conical blocks on it make active contact with the through holes 17 on the outer surface of rotating cylinder 15, which plays a role in unblocking and preventing ore from clogging the through holes 17. Under the stirring and screening action of stirring block 23, ore particles that meet the particle size requirements fall into the discharge hopper 9 at the bottom of the first housing 2 through the through holes 17 and are finally discharged from the device. After the ore screening is completed, PLC controller 7 sends a stop signal to the first motor 6 and the second motor 22. The two motors stop running, and the operator can open the first box door 8 and the second box door 16 to clean and maintain the rotating cylinder 15 and the second housing 3.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A screening device for ore dressing, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected with a first shell (2), the bottom of the first shell (2) is fixedly connected with a discharge hopper (9), the outer surface of the first shell (2) is fixedly connected with a second shell (3), the top of the second shell (3) is fixedly connected with a feeding hopper (4), the inner walls of the two sides of the first shell (2) are rotatably connected with a rotating cylinder (15), a plurality of annular equidistant through holes (17) are formed in the outer surface of the rotating cylinder (15), and the mobile dredging assembly is arranged between the first shell (2) and the rotating cylinder (15) and used for dredging the plurality of through holes (17). The mobile dredging assembly is located between the first shell (2) and the rotating cylinder (15) and is used for dredging the plurality of through holes (17). The screening assembly is located in the interior of the rotating cylinder (15) and is used for screening the ore.

2. A screening device for ore dressing according to claim 1, characterized in that: The mobile dredging assembly comprises a rack (18), a connecting frame (19), a scraper (20), a gear (21) and a second motor (22), the inner walls of the two sides of the first shell (2) are fixedly connected with the rack (18), the top inner wall of the first shell (2) is slidably connected with the connecting frame (19), the interior of the connecting frame (19) is rotatably connected with the gear (21), the outer surface of the connecting frame (19) is fixedly connected with the second motor (22), the output end of the second motor (22) is fixedly connected with the gear (21), the gear (21) is meshingly connected with the rack (18), the bottom of the connecting frame (19) is fixedly connected with the scraper (20), the bottom of the scraper (20) is fixedly connected with a plurality of equidistant elastic conical blocks, and the plurality of elastic conical blocks are in movable contact with the plurality of through holes (17).

3. A screening device for ore dressing according to claim 2, characterised in that: The screening assembly comprises a spiral blade (13), a rotating shaft (14) and stirring blocks (23), the second shell (3) is hollow, the rotating shaft (14) is rotatably connected between the inner wall of the second shell (3) and the first box door (8), a plurality of annular equidistant stirring blocks (23) are fixedly connected to the outer surface of the rotating shaft (14) located in the interior of the rotating cylinder (15), the plurality of stirring blocks (23) are arranged in a π-shaped structure, and the spiral blade (13) is fixedly connected to the outer surface of the rotating shaft (14) located in the interior of the second shell (3).

4. A screening apparatus for mineral separation according to claim 3, characterised in that: The outer surface of the second shell (3) is fixedly connected with a protective shell (5), the interior of the protective shell (5) is rotatably connected with a first belt pulley (10) and a second belt pulley (11), the second belt pulley (11) is located above the first belt pulley (10), a belt (12) is sleeved between the first belt pulley (10) and the second belt pulley (11), the second belt pulley (11) is fixedly connected with the spiral blade (13), the outer surface of the support frame (1) is fixedly connected with a first motor (6), and the output end of the first motor (6) is fixedly connected with the first belt pulley (10).

5. A screening apparatus for mineral separation according to claim 4, characterised in that: The outer surface of the first shell (2) is hingedly buckled with a first box door (8), and the outer surface of the rotating cylinder (15) is hingedly buckled with a second box door (16).

6. A screening apparatus for mineral separation according to claim 5, characterised in that: The outer surface of the support frame (1) is fixedly provided with a PLC controller (7), and the first motor (6) and the second motor (22) are controlled by the PLC controller (7).

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