Circular vibrating screen capable of adjusting inclination angle of screen plate

Abstract

The utility model belongs to the technical field of vibrating screening equipment, and particularly discloses a circular vibrating screen capable of adjusting the inclination angle of a screen plate, which comprises a base and a screen box, a damping spring is fixedly connected onto the base, a support seat is fixedly connected onto the screen box, the other end of the damping spring is fixedly connected with the support seat, a first motor is arranged on the screen box, and a feed port is arranged at the top of the screen box. A mounting plate is arranged on the inner wall of the screen box, a second motor is arranged on the mounting plate, a lead screw is fixedly connected to the second motor, the lead screw is in bolted connection with a sliding block, a screen frame is movably connected to the sliding block, a screen mesh is fixedly connected to the screen frame, and the end, away from the guide rail, of the screen frame is hinged to the two sides of the screen box; aiming at the problem that the sieve plate angle of the circular vibrating sieve cannot be adjusted in the prior art, the sieve plate angle can be adjusted by arranging the sliding assembly on the inner wall of the sieve box, so that the problems that the sieve plate inclination angle of the circular vibrating sieve cannot be adjusted, so that materials move slowly on the sieve and are difficult to adjust are solved. Therefore, excessive materials are accumulated on the screen.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screening equipment technology, specifically to a circular vibrating screen with an adjustable screen plate tilt angle. Background Technology

[0002] Vibrating screens are commonly used equipment for grading and screening raw coal. A vibrating screen typically consists of a vibrator, a screening box, screens inside the screening box, a motor base, and a support. The working principle of a vibrating screen is to use a vibrating motor as the power source, causing the material to be thrown up on the screen while simultaneously moving forward in a straight line. The material enters the feed inlet of the screening machine evenly from the feeder, passes through the screen to produce material that meets specifications, and then exits from the outlet. Vibrating screens are characterized by low energy consumption, high output, simple structure, and easy maintenance. They also eliminate dust spillage, have automatic discharge, and are suitable for assembly line operations.

[0003] Vibrating screens can be classified according to their motion characteristics into linear vibrating screens, circular vibrating screens, three-dimensional rotary vibrating screens, gyratory screens, and elliptical vibrating screens. Circular vibrating screens employ a cylindrical eccentric shaft vibrator and adjustable eccentric blocks to control amplitude. They feature a long material flow path, multiple screening specifications, reliable structure, strong excitation force, high screening efficiency, low vibration noise, durability, easy maintenance, and safe operation. Circular vibrating screens are a high-efficiency new type of vibrating screening equipment, achieving outstanding product grading effects in industries such as mining, coal preparation, mineral processing, building materials, power, and chemicals. They are particularly suitable for materials such as shale, coal slime, mica, barite, and feldspar, making them a widely used screening device.

[0004] Currently used circular vibrating screens have a fixed and unadjustable screen plate inclination angle, resulting in slow material movement after falling onto the screen, leading to excessive material accumulation and severe material compression. Over time, this overloaded operation can cause screen breakage and flexible coupling tearing. Therefore, to solve these problems, this invention provides a vibrating device with an adjustable screen plate angle, addressing the issue of slow material movement and excessive material accumulation on the screen caused by the inability to adjust the screen plate inclination angle. Utility Model Content

[0005] The purpose of this invention is to provide a circular vibrating screen with an adjustable screen plate inclination angle, so as to solve the problem that the inclination angle of the screen plate of the circular vibrating screen cannot be adjusted, resulting in slow material movement speed on the screen and excessive material accumulation on the screen.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a circular vibrating screen with an adjustable screen plate tilt angle, comprising a base and a screen box. A shock-absorbing spring is fixedly connected to the base, and a support base is fixedly connected to the screen box. The other end of the shock-absorbing spring is fixedly connected to the support base. A first motor is provided on the screen box. A feed inlet is provided at the top of the screen box, and a discharge outlet is provided at one end of the screen box. An mounting plate is provided on the inner wall of the other end of the screen box. A second motor is provided on the mounting plate. A lead screw is fixedly connected to the second motor. The other end of the lead screw is rotatably connected to the screen box. A slider is bolted to the lead screw. Two guide rods are provided on the mounting plate. The guide rods pass through the slider and are fixedly connected to the screen box. A first screen frame is movably connected to the slider. A first screen mesh is fixedly connected to the first screen frame. The end of the first screen frame away from the mounting plate is hinged to both sides of the screen box.

[0007] The working principle of this utility model is as follows: When in use, first start the second motor, then the slider on the guide rail drives one end of the first screen frame to move upward. After the first screen frame is adjusted to the appropriate position, turn off the second motor and then start the first motor. Then the material to be screened enters the screen box from the feed port and falls onto the first screen. Under the action of the first motor, the screen box shakes. The larger particle size material rolls along the upper surface of the first screen to the discharge port, while the smaller particle size material falls through the first screen, thus screening the material.

[0008] The beneficial effects of this utility model are as follows: By setting guide rails and sliders on the inner wall of the screen box, this utility model achieves the effect of adjustable screen plate angle. Compared with the existing circular vibrating screen, this design avoids the problem of slow material movement on the screen due to the adjustable screen plate angle, which would cause excessive material accumulation on the screen and make the circular vibrating screen operate under overload, easily leading to screen breakage.

[0009] Option 2, a preferred embodiment of the basic option, has a connecting rod movably connected to one end of the first screen frame, and a second screen frame movably connected to the other end of the connecting rod. The second screen frame is equipped with a second screen mesh. The connecting rod and the slider are fixedly connected. The end of the second screen frame away from the guide rail is hinged to both sides of the screen box. The multi-layer screen mesh can simultaneously screen materials of different specifications.

[0010] Option 3, which is a preferred option of the basic option, involves bolting the first and second screen frames to the connecting rod; the bolted connection facilitates disassembly when the screen is damaged and needs to be replaced.

[0011] Option 4, a preferred option of the basic option, has a guide groove on the top of the screen box, a roller on the end of the screen box away from the feed inlet, a third motor on one end of the roller, and a dust curtain on the roller. The two sides of the dust curtain are nested and connected to the guide groove. This can prevent dust generated during material screening from falling outside the machine, not only keeping the operating environment clean, but also reducing the harm of dust to the operator's health.

[0012] Option 5, which is a preferred option of the basic option, is that the first motor is equipped with a motor support column; the motor support column mainly serves to support and fix the motor, so as to prevent the motor from shaking when the circular vibrating screen is performing screening operations.

[0013] Option 6, which is a preferred option of the basic option, involves connecting the first, second, and third motors to a PLC controller; the PLC controller enables remote control and facilitates operation. Attached Figure Description

[0014] Figure 1 This is a perspective view of a circular vibrating screen with an adjustable screen plate tilt angle according to this utility model;

[0015] Figure 2 This is a top view of a circular vibrating screen with an adjustable screen plate tilt angle according to this utility model;

[0016] Figure 3 for Figure 2 Sectional view at point A in the middle;

[0017] Figure 4 This is a schematic diagram of the structure of the first and second screen plates in a circular vibrating screen with an adjustable screen plate tilt angle according to this utility model. Detailed Implementation

[0018] The present invention will be further described in detail below through specific embodiments:

[0019] The reference numerals in the accompanying drawings of the instruction manual include: 1. Base; 2. Screen box; 3. Shock-absorbing spring; 4. Support base; 5. First motor; 6. Feed inlet; 7. Discharge outlet; 8. Mounting plate; 9. Second motor; 10. Slider; 11. First screen frame; 12. First screen mesh; 13. Connecting rod; 14. Second screen frame; 15. Second screen mesh; 16. Guide groove; 17. Roller; 18. Third motor; 19. Dustproof curtain; 20. Motor support column; 21. Lead screw; 22. Guide rod.

[0020] like Figures 1 to 4As shown: A circular vibrating screen with an adjustable screen plate tilt angle includes a base 1 and a screen box 2. A shock-absorbing spring 3 is fixedly connected to the base 1, and a support base 4 is fixedly connected to the screen box 2. The other end of the shock-absorbing spring 3 is fixedly connected to the support base 4. A first motor 5 is provided on the screen box 2. A feed inlet 6 is provided at the top of the screen box 2, and a discharge outlet 7 is provided at one end of the screen box 2. An mounting plate 8 is provided on the inner wall of the other end of the screen box 2. A second motor 9 is provided on the mounting plate 8. A lead screw 21 is fixedly connected to the second motor 9. The other end of the lead screw 21 is rotatably connected to the screen box 2. A slider 10 is bolted to the lead screw 21. Two guide rods 22 are provided on the mounting plate 8. The guide rods 22 pass through the slider 10 and are fixedly connected to the screen box 2. A connecting rod 13 is fixedly connected to the slider 10. One end of the connecting rod 13 is bolted to the first screen frame 11, and the other end of the connecting rod 13 is bolted to the second screen frame 14. The first screen frame 11 and the second screen frame 14 are respectively provided with a first screen mesh 12 and a second screen mesh 15. The ends of the first screen frame 11 and the second screen frame 14 away from the mounting plate 8 are hinged to both sides of the screen box 2. The top of the screen box 2 is provided with a guide groove 16. The end of the screen box 2 away from the feed inlet 6 is provided with a roller 17. One end of the roller 17 is provided with a third motor 18. The roller 17 is provided with a dustproof curtain 19. The dustproof curtain is an 80 roller shutter door. The two sides of the dustproof curtain 19 are nested and connected to the guide groove 16. The first motor 5 is provided with a motor support column 20. The first motor 5, the second motor 9 and the third motor 18 are electrically connected to a PLC controller.

[0021] The implementation method of this embodiment is as follows: When material screening is performed, the second motor 9 on the mounting plate 8 is first started by the PLC controller. Then, the lead screw 21 on the second motor 9 drives the connecting rod 13 on the slider 10 to move upward, thereby driving one end of the first screen frame 11 and the second screen frame 14 to move upward. After the first screen frame 11 and the second screen frame 14 are adjusted to the appropriate position, the second motor 9 is turned off. Then, the third motor 18 is started. Then, the dust curtain 19 slides on both sides in the guide groove 16, and the dust curtain 19 can be opened from the drum 17. After the dust curtain 19 is fully opened, the third motor 18 is turned off. Then, the first motor 5 is started, and the material to be screened is fed from the feed. The material enters the screen box 2 through the inlet 6 and falls onto the first screen 12. Under the action of the first motor 5, the screen box 2 shakes. The larger particles roll along the upper surface of the first screen 12 to the corresponding outlet 7, while the smaller particles pass through the first screen 12 and fall onto the second screen 15 for screening again. After the material screening is completed, the first motor 5 can be turned off. When the first screen 12 or the second screen 15 is damaged and needs to be replaced, firstly, the first screen frame 11 or the second screen frame 14 connected to the first screen 12 or the second screen 15 is removed from the connecting rod 13, and then the new first screen frame 11 or the second screen frame 14 is fixed to the connecting rod 13 with bolts.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A circular vibrating screen with an adjustable screen plate inclination angle, characterized in that, The system includes a base (1) and a screen box (2). A shock-absorbing spring (3) is fixedly connected to the base (1), and a support base (4) is fixedly connected to the screen box (2). The other end of the shock-absorbing spring (3) is fixedly connected to the support base (4). A first motor (5) is provided on the screen box (2). A feed inlet (6) is provided at the top of the screen box (2). A discharge outlet (7) is provided at one end of the screen box (2). An mounting plate (8) is provided on the inner wall of the other end of the screen box (2). A second motor (9) is provided on the mounting plate (8). A lead screw (21) is fixedly connected to the upper part of the mounting plate (8). The other end of the lead screw (21) is rotatably connected to the screen box (2). A slider (10) is bolted to the lead screw (21). Two guide rods (22) are provided on the mounting plate (8). The guide rods (22) pass through the slider (10) and are fixedly connected to the screen box (2). A first screen frame (11) is movably connected to the slider (10). A first screen mesh (12) is fixedly connected to the first screen frame (11). The end of the first screen frame (11) away from the mounting plate (8) is hinged to both sides of the screen box (2).

2. A circular vibrating screen with an adjustable screen plate inclination angle according to claim 1, characterized in that, One end of the first screen frame (11) is movably connected to a connecting rod (13), and the other end of the connecting rod (13) is movably connected to a second screen frame (14). The second screen frame (14) is provided with a second screen mesh (15). The connecting rod (13) and the slider (10) are fixedly connected. The end of the second screen frame (14) away from the mounting plate (8) is hinged to both sides of the screen box (2).

3. A circular vibrating screen with an adjustable screen plate inclination angle according to claim 2, characterized in that, The first screen frame (11) and the second screen frame (14) are bolted to the connecting rod (13).

4. A circular vibrating screen with an adjustable screen plate inclination angle according to claim 1, characterized in that, The top of the screen box (2) is provided with a guide groove (16), and a roller (17) is provided on one end of the screen box (2) away from the feed inlet (6). A third motor (18) is provided on one end of the roller (17), and a dustproof curtain (19) is provided on the roller (17). The two sides of the dustproof curtain (19) are nested and connected to the guide groove (16).

5. A circular vibrating screen with an adjustable screen plate inclination angle according to claim 1, characterized in that, The first motor (5) is provided with a motor support column (20).

6. A circular vibrating screen with an adjustable screen plate inclination angle according to claim 1, characterized in that, The first motor (5), the second motor (9) and the third motor (18) are powered on and connected to a PLC controller.

Images