Pulverized coal screening device

Abstract

The utility model provides a pulverized coal screening device, which relates to the technical field of pulverized coal, and comprises a screening mechanism, the screening mechanism comprises a movable arm, one end of the movable arm is provided with a feeding bin, one end of the movable arm is fixedly connected with one side of the feeding bin, and the side surface of the other end of the movable arm is respectively provided with a first screening box and a second screening box. According to the vibrating screen, rotation of the driving piece enables the movable arm to swing left and right in the top frame in a reciprocating mode, the first screen box and the second screen box move in the same mode at the same time, naturally, under the condition that materials on the first screen box swing, small materials enter the interior, large materials cannot enter the interior due to the diameter, and at the moment, the materials on the first screen box cannot enter the interior due to the diameter. According to the screening mechanism, large materials after screening are moved to the second screening box, impurities in the large materials can be separated under the action of the second screening box, the separated impurities can automatically enter the interior, and the screening mechanism is suitable for treatment of pulverized coal with different granularities and characteristics, so that the equipment is higher in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of coal powder technology, and in particular to a coal powder screening device. Background Technology

[0002] Pulverized coal refers to the fine powdered fuel formed after coal has been ground and processed. It is commonly used in power generation, industrial boilers, and other fields due to its high combustion efficiency and ease of use.

[0003] In existing technologies, when screening coal powder, due to the different characteristics of coal powder, if vibration is used for screening, the coal powder may adhere together and form clumps during the screening process because the coal powder is too cohesive. This will prevent the particles from passing through the screen, greatly reducing the screening efficiency. Furthermore, sticky coal powder may accumulate in the screen pores, causing screen blockage, affecting the screening function of the entire equipment, and leading to frequent cleaning and shutdowns. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a coal powder screening device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a coal powder screening device, comprising: a screening mechanism, an auxiliary mechanism provided at one end of the screening mechanism, the screening mechanism including a movable arm, a feeding bin provided at one end of the movable arm, one end of the movable arm being fixedly connected to one side of the feeding bin, a screen box one and a screen box two respectively provided on the other side of the movable arm, the other side of the movable arm being fixedly connected to one side of the screen box one and the screen box two respectively, and guide plates provided on the inner walls of the screen box one and the screen box two, the inner walls of the screen box one and the screen box two being fixedly connected to one side of the guide plates.

[0006] In a preferred embodiment, the auxiliary mechanism includes a locking plate, a locking rod is provided on the inner wall of one end of the locking plate, one end of the locking plate is connected through to one end of the locking rod, a bracket is provided on the outer side of one end of the locking rod, and the outer side of one end of the locking rod is connected through to the inner wall of the bracket.

[0007] In a preferred embodiment, the outer bottom end of the bracket fits into the inner side of one end of the card plate, and the other end of the card plate is provided with a base plate, and the other end of the card plate is fixedly connected to one end of the base plate.

[0008] In a preferred embodiment, a driving component is provided on the inner side of one end of the movable arm, and the inner side of one end of the movable arm is rotatably connected to the side end of the driving component. A motor is provided on the side end of one end of the driving component, and the side end of the driving component is fixedly connected to the output end of the motor.

[0009] In a preferred embodiment, a top frame is provided on the outer side of the motor, the outer side of the motor is fixedly connected to the inner wall of the top frame, and the inner wall of the top frame is movably connected to the middle end of the movable arm.

[0010] In a preferred embodiment, the bottom side of the top frame is fixedly connected to the top of the bracket.

[0011] In a preferred embodiment, a receiving bin is provided below both the first and second sieve boxes. The receiving bin is located below the discharge port of the first and second sieve boxes, and the bottom side of the receiving bin is fixedly connected to the top side of the bottom plate.

[0012] In a preferred embodiment, a support arm is provided at the middle end of the movable arm, the middle end of the movable arm is rotatably connected to the top side of one end of the support arm, and the other end of the support arm is rotatably connected to the inner end of the bracket.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. The rotation of the drive component causes the movable arm to swing back and forth within the top frame, causing screen box one and screen box two to move simultaneously in the same way. Naturally, the material on screen box one will swing, allowing smaller materials to enter, while larger materials will be unable to enter due to their diameter. At this time, the larger materials after screening are moved to screen box two. The function of screen box two is to separate impurities from the larger materials. The separated impurities will automatically enter the interior, thus preventing the material from mixing with the impurities again. This screening mechanism is suitable for processing coal powder of different particle sizes and characteristics, making the equipment more adaptable.

[0015] 2. Directly remove the locking rod from the bracket to disengage the card plate from the bracket. At this point, the receiving bin can be separated from the bracket for subsequent processing. The receiving bin can be flexibly cleaned, emptied, or repackaged as needed, and can be processed independently to adapt to different subsequent process requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a coal powder screening device provided by this utility model.

[0017] Figure 2 This is a schematic diagram showing the disassembled structure of the screening mechanism components of a coal powder screening device provided by this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of some components of the screening mechanism of a coal powder screening device provided by this utility model.

[0019] Figure 4A top view of the auxiliary mechanism and screening mechanism components of a pulverized coal screening device provided by this utility model.

[0020] Legend:

[0021] 1. Screening mechanism; 11. Bracket; 12. Top frame; 13. Motor; 14. Drive component; 15. Movable arm; 16. Feeding bin; 17. Support arm; 18. Screen box one; 19. Screen box two; 110. Guide plate; 111. Bottom plate; 112. Receiving bin;

[0022] 2. Auxiliary mechanism; 21. Card plate; 22. Locking rod. Detailed Implementation

[0023] 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.

[0024] Example 1: As Figures 1-4 As shown, this utility model provides a technical solution: a coal powder screening device, comprising: a screening mechanism 1, an auxiliary mechanism 2 provided at one end of the screening mechanism 1, the screening mechanism 1 including a movable arm 15, a feeding bin 16 provided at one end of the movable arm 15, one end of the movable arm 15 being fixedly connected to one side of the feeding bin 16, a screen box 18 and a screen box 2 19 respectively provided on the side of the other end of the movable arm 15, the other side of the movable arm 15 being fixedly connected to one side of the screen box 18 and the screen box 2 19 respectively, a guide plate 110 provided on the inner wall of both the screen box 18 and the screen box 2 19, the inner wall of both the screen box 18 and the screen box 2 19 being fixedly connected to one side of the guide plate 110, a driving member 14 provided on the inner side of one end of the movable arm 15, the inner side of one end of the movable arm 15 rotating with one side of the driving member 14. The drive component 14 has a motor 13 on one side, which is fixedly connected to the output end of the motor 13. A top frame 12 is provided on the outside of the motor 13, which is fixedly connected to the inner wall of the top frame 12. The inner wall of the top frame 12 is movably connected to the middle of the movable arm 15. The bottom side of the top frame 12 is fixedly connected to the top of the bracket 11. A receiving bin 112 is provided below both screen box 18 and screen box 2 19. The receiving bin 112 is located below the discharge port of screen box 18 and screen box 19. The bottom side of the receiving bin 112 is fixedly connected to the top side of the base plate 111. A support arm 17 is provided at the middle of the movable arm 15. The middle of the movable arm 15 is rotatably connected to the top side of one end of the support arm 17. The other end of the support arm 17 is rotatably connected to the inner side of the bracket 11.

[0025] In this embodiment, when using this type of coal powder screening device, firstly, coal powder is poured into the feeding bin 16, and the material is then evenly distributed onto the first screen box 18. At this time, the motor 13 is started, causing the drive component 14 to rotate. Due to the rotation of the drive component 14, the movable arm 15 swings back and forth within the top frame 12, with the swing amplitude only reaching between 10 and 170 degrees. Consequently, due to the movement of the movable arm 15, the first screen box 18 and the second screen box 19 move simultaneously in the same manner. Naturally, the material on the first screen box 18 will be allowed to enter during the swing, while larger materials will be unable to enter due to their diameter. During screening, larger materials are moved to screen box 2 19. Screen box 2 19 separates impurities from the larger materials. The separated impurities automatically enter the screen box. Corresponding receiving bins 112 are designed in both screen box 18 and screen box 2 19. Therefore, the material inside screen box 18 will flow into the receiving bin 112 from the discharge hole under the action of guide plate 110. The impurities in screen box 2 19 will also enter the receiving bin 112. The receiving bin 112 has two holding spaces, so the material and impurities will not mix again. This screening mechanism is suitable for processing coal powder of different particle sizes and characteristics, making the equipment more adaptable and meeting the needs of various industrial applications.

[0026] Example 2: Figures 1-4 As shown, the auxiliary mechanism 2 includes a locking plate 21. A locking rod 22 is provided on the inner wall of one end of the locking plate 21. One end of the locking plate 21 is connected to one end of the locking rod 22. A bracket 11 is provided on the outer side of one end of the locking rod 22. The outer side of one end of the locking rod 22 is connected to the inner wall of the bracket 11. The outer side of the bottom end of the bracket 11 fits with the inner side of one end of the locking plate 21. A bottom plate 111 is provided on the other end of the locking plate 21. The other end of the locking plate 21 is fixedly connected to one end of the bottom plate 111.

[0027] In this embodiment, when the materials and impurities in the receiving bin 112 need to be further processed, the locking rod 22 is directly removed from the bracket 11, so that the card plate 21 is disconnected from the bracket 11. At this time, the receiving bin 112 can be separated from the bracket 11, and then further processing can be carried out. The receiving bin 112 can be flexibly cleaned, dumped or repackaged as needed, and processed independently. It can adapt to different subsequent process requirements. Moreover, through the simple operation of the locking rod 22, the operator can quickly complete the separation, simplifying the operation process.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A coal dust screening device, characterized by, The utility model relates to a screening mechanism (1) one end is equipped with auxiliary mechanism (2), the screening mechanism (1) includes movable arm (15), one end of movable arm (15) is equipped with feeding bin (16), one end of movable arm (15) is fixedly connected with one side of feeding bin (16), the other end side of movable arm (15) is equipped with sieve box one (18) and sieve box two (19) respectively, the other end side of movable arm (15) is fixedly connected with one side of sieve box one (18) and sieve box two (19) respectively, the inner wall of sieve box one (18) and sieve box two (19) is equipped with guide plate (110), and the inner wall of sieve box one (18) and sieve box two (19) is fixedly connected with one side of guide plate (110). The auxiliary mechanism (2) includes a clamping plate (21), one end of the clamping plate (21) is provided with a locking rod (22), one end of the clamping plate (21) is connected with one end of the locking rod (22) in a penetrating manner, and one end of the locking rod (22) is provided with a bracket (11) on the outer side.

2. A coal dust screening device according to claim 1, characterized in that: The bottom end of the bracket (11) is matched with the inner side of one end of the clamping plate (21), and the other end of the clamping plate (21) is provided with a bottom plate (111).

3. A coal dust screening device according to claim 2, characterised in that: One end of the movable arm (15) is provided with a driving part (14), and one end of the movable arm (15) is rotatably connected with one end of the side surface of the driving part (14).

4. The coal dust screening device according to claim 1, characterized in that: One end of the side surface of the driving part (14) is provided with a motor (13), and one end of the side surface of the driving part (14) is fixedly connected with the output end of the motor (13).

5. A coal dust screening device according to claim 4, characterised in that: The outer side of the motor (13) is provided with a top frame (12), and the outer side of the motor (13) is fixedly connected with the inner wall of the top frame (12) in a penetrating manner.

6. A coal dust screening device according to claim 5, characterised in that: The inner wall of the top frame (12) is movably connected with the middle end of the movable arm (15).

7. The coal dust screening device of claim 1, wherein: The bottom side of the top frame (12) is fixedly connected with the top end of the bracket (11).

8. The coal dust screening device according to claim 1, characterized in that: The lower part of the sieve box one (18) and the sieve box two (19) is provided with a material collecting bin (112), and the material collecting bin (112) is arranged below the discharge port of the sieve box one (18) and the sieve box one (18). The middle end of the movable arm (15) is provided with a supporting arm (17), and the middle end of the movable arm (15) is rotatably connected with the top side of one end of the supporting arm (17). The other end of the supporting arm (17) is rotatably connected with the inner side of one end of the bracket (11).

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