Unattended vibrating screen for coal dressing

Abstract

The utility model relates to the field of vibrating screens, in particular to an unattended coal dressing vibrating screen which comprises a machine body, a bottom frame, a vibrating motor, a dustproof brush, a buffer spring, a first screen frame net rack, a second screen frame net rack and a third screen frame net rack. Buffer springs are installed between the machine body and the bottom frame, a first screen frame net rack, a second screen frame net rack and a third screen frame net rack are sequentially installed on the inner side of the machine body from top to bottom, dustproof brushes are installed at the discharging ends of the first screen frame net rack, the second screen frame net rack and the third screen frame net rack, the hole diameter of the first screen frame net rack is the largest, and the hole diameter of the second screen frame net rack is in the middle. The hole diameter of the third screen frame net rack is minimum, coal of different sizes can be screened out more effectively, the screening quality and efficiency are improved, and the requirement for large-scale screening is met.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screens, specifically to an unattended vibrating screen for coal preparation. Background Technology

[0002] A vibrating screen for coal preparation is a piece of equipment used in coal processing, mainly for screening and grading coal. Its core principle is to use mechanical vibration to cause coal to jump and spread on the screen surface, thereby achieving stratification by particle size and screening through the screen holes. A Chinese patent discloses a vibrating screen device for a coal preparation plant (authorization announcement number CN 218190984U). In this patented technology, a rotating cover can seal the upper end of the feed hopper during the screening process, preventing dust from being discharged through the upper end of the feed hopper. The diameter of the bottom of the feed hopper can be adjusted by pulling an adjusting plate, facilitating the adjustment of the feed speed. A dust extraction hood is connected to an external exhaust fan to extract dust from the machine body. However, this design has too few screen frames, resulting in poor handling capacity for screening limitations, affecting the coal screening efficiency. Furthermore, the dust extraction hood cannot remove surface deposits from the coal during the discharge state. Therefore, those skilled in the art have provided an unattended vibrating screen for coal preparation to solve the problems mentioned in the background art. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an unattended vibrating screen for coal preparation, including a machine body, a base frame, a vibrating motor, a dust brush, a buffer spring, a No. 1 screen frame, a No. 2 screen frame, and a No. 3 screen frame. The vibrating motor is installed in the middle of the base frame, and the top of the vibrating motor is located on the bottom side wall of the machine body. A buffer spring is installed between the machine body and the base frame. The No. 1 screen frame, the No. 2 screen frame, and the No. 3 screen frame are installed sequentially from top to bottom on the inner side of the machine body. Dust brushes are installed at the discharge ends of the No. 1 screen frame, the No. 2 screen frame, and the No. 3 screen frame.

[0004] Preferably, the machine body and the No. 1, No. 2, and No. 3 screen frames are installed using fixing bolts;

[0005] Preferably: a fixing platform is installed on the front and rear side walls of the machine body, a first stabilizing rod is installed on the lower side of the fixing platform, a second stabilizing rod is installed on the upper side of the base frame, and buffer springs are installed on the outer sides of the first and second stabilizing rods;

[0006] Preferably: a feeding hopper is installed at the upper left end of the machine body, a discharge bottom plate is installed at the bottom right end of the machine body, a No. 3 screen frame is installed above the discharge bottom plate, and a No. 3 discharge inclined plate is installed at the right end of the No. 3 screen frame.

[0007] Preferably: A second screen frame is installed above the third screen frame, a second discharge inclined plate is installed on the right end of the second screen frame, a first screen frame is installed above the second screen frame, a first discharge inclined plate is installed on the right end of the first screen frame, a dustproof brush is provided between the first, second, and third screen frames and the rightmost end of the machine body, a fixing plate is installed on the upper side of the dustproof brush, and the fixing plate is installed between the front and rear sides of the machine body.

[0008] The technical effects and advantages of this utility model are as follows:

[0009] 1. At this time, the coal enters the No. 1 screen frame, the No. 2 screen frame, the No. 3 screen frame and the discharge bottom plate in sequence according to volume. The No. 1 screen frame has the largest aperture, the No. 2 screen frame has a medium aperture, and the No. 3 screen frame has the smallest aperture. This can more effectively screen coal of different volumes, improve screening quality and efficiency, and meet the needs of large-scale screening.

[0010] 2. Dust-proof brushes are installed between the No. 1, No. 2, and No. 3 screen frames and the rightmost end of the machine body. The dust-proof brushes clean the dust on the surface of the coal through physical friction, which improves the cleanliness of the coal and prevents the leakage of internal dust, thus playing a certain role in dust prevention. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an unattended coal preparation vibrating screen provided in an embodiment of this application. Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the structure of an unattended coal preparation vibrating screen provided in an embodiment of this application. Figure 2 ;

[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of an unattended coal preparation vibrating screen provided in an embodiment of this application;

[0014] Figure 4 This is an exploded structural diagram of an unattended coal preparation vibrating screen provided in an embodiment of this application;

[0015] Figure 5 This is a partial structural schematic diagram of an unattended coal preparation vibrating screen provided in an embodiment of this application.

[0016] In the diagram: 1. Machine body; 2. Base frame; 3. Vibration motor; 4. Dust brush; 5. Buffer spring; 6. Fixing bolt; 7. No. 1 screen frame; 8. No. 2 screen frame; 9. No. 3 screen frame; 101. Feed hopper; 102. Fixing platform; 103. No. 1 stabilizing bar; 104. Discharge bottom plate; 201. No. 2 stabilizing bar; 401. Fixing plate; 701. No. 1 discharge inclined plate; 801. No. 2 discharge inclined plate; 901. No. 3 discharge inclined plate. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] Example

[0019] Please see Figures 1-5 This embodiment provides an unattended coal preparation vibrating screen, including a body 1, a base frame 2, a vibrating motor 3, a dust brush 4, a buffer spring 5, a first screen frame 7, a second screen frame 8, and a third screen frame 9. The vibrating motor 3 is installed in the middle of the base frame 2, and the top of the vibrating motor 3 is located on the bottom side wall of the body 1. The buffer spring 5 is installed between the body 1 and the base frame 2. The first screen frame 7, the second screen frame 8, and the third screen frame 9 are installed sequentially from top to bottom on the inner side of the body 1. The dust brush 4 is installed at the discharge end of the first screen frame 7, the second screen frame 8, and the third screen frame 9.

[0020] Specifically, the machine body 1 and the No. 1 screen frame 7, the No. 2 screen frame 8, and the No. 3 screen frame 9 are installed by fixing bolts 6;

[0021] A fixed platform 102 is installed on the front and rear side walls of the body 1. A first stabilizer 103 is installed on the lower side of the fixed platform 102. A second stabilizer 201 is installed on the upper side of the base frame 2. A buffer spring 5 is installed on the outer side of the first stabilizer 103 and the second stabilizer 201.

[0022] A feeding hopper 101 is installed on the upper left side of the machine body 1, a discharge bottom plate 104 is installed on the bottom right side of the machine body 1, a No. 3 screen frame 9 is installed above the discharge bottom plate 104, and a No. 3 discharge inclined plate 901 is installed on the right side of the No. 3 screen frame 9.

[0023] The No. 2 screen frame 8 is installed above the No. 3 screen frame 9, and the No. 2 discharge inclined plate 801 is installed on the right end of the No. 2 screen frame 8.

[0024] The No. 1 screen frame 7 is installed above the No. 2 screen frame 8, and the No. 1 discharge inclined plate 701 is installed at the right end of the No. 1 screen frame 7.

[0025] Dustproof brushes 4 are provided between the No. 1 screen frame 7, the No. 2 screen frame 8 and the No. 3 screen frame 9 and the rightmost end of the machine body 1. A fixing plate 401 is installed on the upper side of the dustproof brushes 4, and the fixing plate 401 is installed between the front and rear sides of the machine body 1.

[0026] The working principle of this utility model is as follows:

[0027] When using an unattended coal preparation vibrating screen, coal is poured into the feed hopper 101 on the upper side of the machine body 1. At this time, the coal enters the No. 1 screen frame 7, No. 2 screen frame 8, No. 3 screen frame 9 and the discharge bottom plate 104 in sequence according to volume. The No. 1 screen frame 7 has the largest aperture, the No. 2 screen frame 8 has a medium aperture, and the No. 3 screen frame has the smallest aperture. This can more effectively screen coal of different volumes, improve screening quality and efficiency, and meet the needs of large-scale screening. Since the No. 1 screen frame 7, No. 2 screen frame 8 and No. 3 screen frame 9 are equipped with dustproof brushes 4 between them and the rightmost end of the machine body 1, the dustproof brushes 4 clean the dust on the surface of the coal through physical friction. On the one hand, this improves the cleanliness of the coal, and on the other hand, it prevents the leakage of internal dust, thus playing a certain role in dust prevention.

[0028] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An unattended coal preparation vibrating screen, characterised in that, Including body (1), chassis (2), vibration motor (3), dustproof brush (4), buffer spring (5), No. 1 screen frame net rack (7), No. 2 screen frame net rack (8) and No. 3 screen frame net rack (9), the vibration motor (3) is installed in the middle position of the chassis (2), the vibration motor (3) top is located in the bottom side wall of the body (1), the buffer spring (5) is installed between the body (1) and the chassis (2), the body (1) is installed from top to bottom inside No. 1 screen frame net rack (7), No. 2 screen frame net rack (8) and No. 3 screen frame net rack (9), No. 1 screen frame net rack (7), No. 2 screen frame net rack (8) and No. 3 screen frame net rack (9) are installed at the discharge end of the dustproof brush (4).

2. The unattended coal preparation vibrating screen according to claim 1, characterized in that, The body (1) and No. 1 screen frame net rack (7), No. 2 screen frame net rack (8), No. 3 screen frame net rack (9) are installed through the fixed bolt (6).

3. The unattended coal preparation vibrating screen according to claim 2, characterized in that, The front and rear side walls of the body (1) are provided with a fixed table (102), the lower side of the fixed table (102) is provided with a first stabilizing rod (103), the upper side of the chassis (2) is provided with a second stabilizing rod (201), and the outer side of the first stabilizing rod (103) and the second stabilizing rod (201) is provided with a buffer spring (5).

4. The unattended coal preparation vibrating screen according to claim 3, characterized in that, The upper left end of the body (1) is provided with a feeding hopper (101), and the right end of the bottom of the body (1) is provided with a discharge bottom plate (104).

5. The unattended coal preparation vibrating screen according to claim 4, characterized in that, The discharge bottom plate (104) is provided with a No. 3 screen frame net rack (9) above the position, and the right end of the No. 3 screen frame net rack (9) is provided with a No. 3 discharge inclined plate (901).

6. The unattended coal preparation vibrating screen according to claim 5, characterized in that, The No. 3 screen frame net rack (9) is provided with a No. 2 screen frame net rack (8) above the position, and the right end of the No. 2 screen frame net rack (8) is provided with a No. 2 discharge inclined plate (801).

7. The unattended coal preparation vibrating screen according to claim 6, characterized in that, The No. 2 screen frame net rack (8) is provided with a No. 1 screen frame net rack (7) above the position, and the right end of the No. 1 screen frame net rack (7) is provided with a No. 1 discharge inclined plate (701).

8. The unattended coal preparation vibrating screen according to claim 7, characterized in that, The No. 1 screen frame net rack (7), No. 2 screen frame net rack (8) and No. 3 screen frame net rack (9) are provided with a dustproof brush (4) between the rightmost end of the body (1), and the upper side of the dustproof brush (4) is provided with a fixed plate (401), and the fixed plate (401) is installed between the front and rear sides of the body (1).

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