Iron ore screening device

Abstract

The utility model discloses an iron ore screening device which comprises a screening box, a feeding hopper is fixedly arranged at the top of the screening box, a first screen and a second screen are arranged in the screening box, a motor is installed below the right side of the screening box, and the iron ore screening device further comprises a collecting box connected with the left side of the screening box through bolts. And rotating rods are connected to the positions, located below the first screen and the second screen, in the screening box through bearings, the outer side of the left side of the lower rotating rod is sleeved with a sleeve, and a rotating disc is fixed to the left end of the sleeve. According to the iron ore screening device, a motor drives a rotating rod to rotate reversely, the rotating rod drives a sleeve to rotate through a ratchet wheel assembly, meanwhile, a rotating disc rotates and pulls a rack to move downwards through a connecting plate, then a driven gear rotates and winds a traction rope, and a cleaning brush can be pulled to move; and the surfaces of the first screen mesh and the second screen mesh are cleaned, so that the situation that subsequent screening work is affected due to blockage of screen holes is avoided.

Description

Technical Field

[0001] This utility model relates to the field of iron ore screening technology, specifically to an iron ore screening device. Background Technology

[0002] Iron ore screening equipment is a key piece of equipment used in mining production to classify iron ore according to particle size. It is widely used in screening operations in mining, coal building materials, chemical and other fields. However, existing iron ore screening methods suffer from drawbacks: after crushing, the particle size varies, making it difficult to effectively screen the ore according to specific needs. To address these shortcomings, existing technology (Chinese patent application number: 202321272264.3, authorized announcement date: 2024-01-30) discloses an iron ore anti-overflow screening device with a reasonable design. Multiple screens are installed inside the housing, with the through-hole size gradually increasing from top to bottom. A vibrator is installed on the outer wall of the housing, and the top of the housing slides against the guide pipe, causing the housing to vibrate. Using screens of different sizes allows for the screening of iron ore of different sizes, facilitating better subsequent processing.

[0003] Existing technology uses multiple screens installed inside the housing to screen iron ore of different sizes for better subsequent processing. However, after prolonged use, the screen holes are easily clogged by iron ore, affecting the screening effect. Usually, workers need to remove and clean the screens periodically for subsequent screening, but this requires stopping the device, resulting in low screening efficiency. Therefore, we propose an iron ore screening device that can effectively solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an iron ore screening device to solve the problem mentioned in the background art that the screen holes are easily blocked by iron ore after long-term use, which affects the subsequent screening effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an iron ore screening device, including a screening box, a feed hopper fixedly provided on the top of the screening box, a first screen and a second screen respectively provided inside the screening box, and a motor installed on the lower right side of the screening box. It also includes: a collection box bolted to the left side of the screening box, and a rotating rod bearingly connected to the inside of the screening box below the first and second screens, with a sleeve sleeved on the outer side of the left side of the lower rotating rod, a turntable fixed to the left end of the sleeve, a rack connected inside the collection box, and a driven gear rotatably connected to one side of the inside of the collection box via a shaft, the rack and sleeve being connected via a connecting plate, and a cleaning brush provided inside the screening box above the first and second screens.

[0006] Preferably, the left sides of both the first and second screens extend into the interior of the two collection boxes, and the right side of the inner wall of the screening box is slidably engaged with a locking block. Both the first and second screens are hinged to the sides of the two locking blocks, and torsion springs are installed at the connection positions between the shaft ends of the first and second screens and the two locking blocks.

[0007] Preferably, the right end of the rotating rod extends out of the right side of the screening box, and the two rotating rods are connected by a pulley assembly for transmission, and the right end of the lower rotating rod is fixedly connected to the output end of the motor.

[0008] Preferably, cams are fixedly fitted on the outer sides of the two rotating rods, and a bonding block is fixedly connected to the left side of the bottom of the first screen and the second screen, with the outer side of the cams fitting against the bottom of the bonding block.

[0009] Preferably, the rack is slidably disposed inside the collection box, and the rack is meshed with the driven gear. Both ends of the connecting plate are hinged to the bottom of the rack and the side of the turntable, respectively.

[0010] Preferably, a ratchet assembly is installed between the sleeve and the rotating rod, and the sleeve is rotatably connected inside the screening box.

[0011] Preferably, the cleaning brush is tilted and slidably disposed inside the screening box, and a return spring is installed at the connection position between the cleaning brush and the screening box. The cleaning brush is connected to the driven gear by a traction rope, and one end of the traction rope is wrapped around the shaft end of the driven gear, while the other end of the traction rope is fixedly connected to the side of the cleaning brush.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This iron ore screening device adopts a novel structural design, the specific details of which are as follows:

[0013] (1) The motor drives the rotating rod to rotate in the opposite direction, so that the rotating rod drives the sleeve to rotate through the ratchet assembly. At the same time, the turntable rotates and pulls the rack downward through the connecting plate, which in turn causes the driven gear to rotate and wind up the traction rope, which can pull the cleaning brush to move and clean the surface of the first screen and the second screen, thereby avoiding the clogging of the screen holes and affecting the subsequent screening work; further, as the turntable continues to rotate, the connecting plate pushes the rack to reset upward. At this time, the driven gear rotates in the opposite direction and loosens the traction rope, so that the cleaning brush is reset under the elastic force of the reset spring.

[0014] (2) The iron ore particles are fed into the screening box from the feed hopper and the larger iron ore particles are screened out by the first screen and the smaller iron ore particles are screened out by the second screen. At the same time, the screened iron ore particles are classified and collected, so that the iron ore can be graded and screened.

[0015] (3) A motor drives a rotating rod to rotate, and the rotating rod drives another rotating rod to rotate synchronously through a pulley assembly, so that the cam rotates and reciprocates to press the bonding block, which in turn causes the first screen and the second screen to rotate upward. When the cam stops pressing the bonding block, the first screen and the second screen are reset under the force of the torsion spring, and the above operation is repeated, so that the first screen and the second screen rotate back and forth and generate vibration, causing the iron ore particles to jump and roll on the screen surface, thereby achieving efficient screening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main cross-section of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the screening box and feed hopper of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the first and second screens of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the cleaning brush and toothed rack of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the bonding block and the second screen of this utility model;

[0021] Figure 6 This is a side view of the ratchet assembly of this utility model;

[0022] Figure 7 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Screening box; 2. Feed hopper; 3. First screen; 4. Second screen; 5. Collection box; 6. Rotating rod; 7. Cam; 8. Adhesive block; 9. Clamping block; 10. Cleaning brush; 11. Rack; 12. Driven gear; 13. Traction rope; 14. Ratchet assembly; 15. Sleeve; 16. Turntable; 17. Connecting plate; 18. Return spring. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-7The present invention provides the following technical solution: an iron ore screening device;

[0026] Example 1: To address the problem in the prior art where the screen openings are easily clogged by iron ore after prolonged use, thus affecting subsequent screening efficiency, the following solution is disclosed. Please refer to the following for details. Figures 1-4 and Figure 6 and Figure 7 As shown, the system includes a screening box 1, with a feed hopper 2 fixedly installed on the top of the screening box 1. A first screen 3 and a second screen 4 are respectively installed inside the screening box 1. A motor is installed on the lower right side of the screening box 1. The system also includes: a rotating rod 6 connected to a bearing below the first screen 3 and the second screen 4 inside the screening box 1; a sleeve 15 sleeved on the outer left side of the rotating rod 6; a turntable 16 fixed to the left end of the sleeve 15; a rack 11 connected inside the collection box 5; and a driven gear 12 rotatably connected to one side of the collection box 5 via a shaft. The rack 11 and the sleeve 15 are connected via a connecting plate 17. A cleaning device is installed inside the screening box 1 above the first screen 3 and the second screen 4. A cleaning brush 10 is tilted and slidably disposed inside the screening box 1, and a return spring 18 is installed at the connection position between the cleaning brush 10 and the screening box 1. The cleaning brush 10 is connected to the driven gear 12 by a traction rope 13, one end of which is wrapped around the shaft end of the driven gear 12, and the other end of which is fixedly connected to the side of the cleaning brush 10. A rack 11 is slidably disposed inside the collection box 5, and the rack 11 is meshed with the driven gear 12. Both ends of the connecting plate 17 are hinged to the bottom of the rack 11 and the side of the turntable 16, respectively. A ratchet assembly 14 is installed between the sleeve 15 and the rotating rod 6, and the sleeve 15 is rotatably connected inside the screening box 1.

[0027] After the iron ore screening is completed, the motor drives the lower rotating rod 6 to rotate in the opposite direction, so that the rotating rod 6 drives the sleeve 15 to rotate through the ratchet assembly 14. At the same time, the turntable 16 rotates and pulls the rack 11 downward through the connecting plate 17, which in turn causes the driven gear 12 to rotate and wind up the traction rope 13, which can pull the cleaning brush 10 to move and clean the surface of the first screen 3 and the second screen 4, thereby preventing the screen holes from being blocked and affecting the subsequent screening work. Then, as the turntable 16 continues to rotate, the connecting plate 17 pushes the rack 11 to reset upward. At this time, the driven gear 12 rotates in the opposite direction and releases the traction rope 13, so that the cleaning brush 10 is reset under the elastic force of the reset spring 18. At the same time, during the movement of the cleaning brush 10, the first screen 3 and the second screen 4 will intermittently hit the bristles of the cleaning brush 10 under the action of the cam 7, the contact block 8 and the torsion spring, thereby cleaning the iron ore particles at the bristles and improving the subsequent cleaning effect of the cleaning brush 10.

[0028] Example 2: Unlike Example 1, this example utilizes the reciprocating rotation of the first screen 3 and the second screen 4 to generate vibration, causing the material to jump and tumble on the screen surface, thereby achieving efficient screening. See details... Figures 1-3 and Figure 5 and Figure 7 As shown, the left side of the screening box 1 is bolted to the collection box 5. The left sides of the first screen 3 and the second screen 4 extend into the interior of the two collection boxes 5. The right side of the inner wall of the screening box 1 is slidably engaged with the locking block 9. The first screen 3 and the second screen 4 are hinged to the sides of the two locking blocks 9, and torsion springs are installed at the connection positions between the shaft ends of the first screen 3 and the second screen 4 and the two locking blocks 9.

[0029] A motor drives a rotating rod 6 to rotate, which in turn drives another rotating rod 6 to rotate synchronously via a pulley assembly. This causes the cam 7 to rotate and reciprocate to press against the bonding block 8, thereby causing the first screen 3 and the second screen 4 to rotate upwards (the torsion spring is in a stored state). When the cam 7 stops pressing against the bonding block 8, the first screen 3 and the second screen 4 return to their original positions under the stored force of the torsion spring. This process repeats, causing the first screen 3 and the second screen 4 to rotate back and forth and generate vibration, making the iron ore particles jump and tumble on the screen surface, thus achieving efficient screening. Then, by opening the door on the collection box 5, the iron ore particles inside can be cleaned out.

[0030] Example 3: Unlike Example 2, this example utilizes two collection boxes 5 to classify and collect the screened iron ore. See details below. Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the right end of the rotating rod 6 extends out of the right side of the screening box 1, and the two rotating rods 6 are connected by a belt pulley assembly. The right end of the lower rotating rod 6 is fixedly connected to the output end of the motor. Cams 7 are fixedly fitted on the outer sides of the two rotating rods 6. Adhesive blocks 8 are fixedly connected to the left side of the bottom of the first screen 3 and the second screen 4. The outer side of the cam 7 is in contact with the bottom of the adhesive block 8.

[0031] Iron ore is fed from the feed hopper 2 into the screening box 1, and larger iron ore particles are screened out by the first screen 3, and smaller iron ore particles are screened out by the second screen 4. At the same time, since the first screen 3 and the second screen 4 are inclined, the screened iron ore particles automatically fall into the corresponding collection box 5 for classification and collection, thereby classifying and screening the iron ore.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An iron ore screening device, comprising a screening box (1), a feed hopper (2) is fixed on the top of the screening box (1), and a first screen (3) and a second screen (4) are arranged in the screening box (1) respectively, and a motor is installed below the right side of the screening box (1), characterized in that, Also includes: The left side of the screening box (1) is bolted to the collection box (5), and the inside of the screening box (1) is connected to the rotating rod (6) below the first screen (3) and the second screen (4) by bearings. The outer side of the left side of the rotating rod (6) is fitted with a sleeve (15). The left end of the sleeve (15) is fixed with a turntable (16). The inside of the collection box (5) is connected to a rack (11), and one side of the inside of the collection box (5) is rotatably connected to a driven gear (12) through a shaft. The rack (11) and the sleeve (15) are connected by a connecting plate (17). The inside of the screening box (1) is provided with a cleaning brush (10) above the first screen (3) and the second screen (4).

2. An iron ore screening device according to claim 1, characterised in that: The left sides of the first screen (3) and the second screen (4) extend into the interior of the two collection boxes (5). The right side of the inner wall of the screening box (1) is slidably connected with a locking block (9). The first screen (3) and the second screen (4) are hinged to the sides of the two locking blocks (9). Torsion springs are installed at the connection positions between the shaft ends of the first screen (3) and the two screens (4) and the two locking blocks (9).

3. An iron ore screening device according to claim 1, characterised in that: The right end of the rotating rod (6) extends out of the right side of the screening box (1), and the two rotating rods (6) are connected by a belt pulley assembly. The right end of the lower rotating rod (6) is fixedly connected to the output end of the motor.

4. An iron ore screening device according to claim 1, characterised in that: Cams (7) are fixedly fitted on the outer sides of the two rotating rods (6), and a bonding block (8) is fixedly connected to the left side of the bottom of the first screen (3) and the second screen (4). The outer side of the cam (7) is bonded to the bottom of the bonding block (8).

5. An iron ore screening device according to claim 1, characterised in that: The rack (11) is slidably disposed inside the collection box (5), and the rack (11) is meshed with the driven gear (12). Both ends of the connecting plate (17) are hinged to the bottom of the rack (11) and the side of the turntable (16), respectively.

6. An iron ore screening device according to claim 1, characterised in that: A ratchet assembly (14) is installed between the sleeve (15) and the rotating rod (6), and the sleeve (15) is rotatably connected inside the screening box (1).

7. An iron ore screening device according to claim 1, characterised in that: The cleaning brush (10) is slidably disposed inside the screening box (1), and a return spring (18) is installed at the connection position between the cleaning brush (10) and the screening box (1). The cleaning brush (10) is connected to the driven gear (12) by a traction rope (13), and one end of the traction rope (13) is wrapped around the shaft end of the driven gear (12), and the other end of the traction rope (13) is fixedly connected to the side of the cleaning brush (10).

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