Airflow adjusting device of pulverized coal separator of coal mill

Abstract

The utility model relates to the technical field of airflow adjustment of separators, in particular to an airflow adjusting device of a pulverized coal separator of a coal mill, which comprises a main body, fixing blocks are arranged on two side walls inside the main body, a third motor is arranged between the fixing blocks, and a second motor is arranged between the third motor and the main body. The third motor is in transmission connection with turbofan blades, ventilation openings are formed in the two ends in the main body, a plurality of rails are arranged on one sides of the ventilation openings, a plurality of first motors are arranged at the upper end of the main body, the first motors are installed at the positions corresponding to the rails, and the first motors are in transmission connection with first threaded rods. The first threaded rod is in threaded connection with a first opening and closing plate, the two ends of the first opening and closing plate are located in the rails, and a plurality of fourth motors are arranged at the bottom end of the main body. The opening and closing plate is arranged and used for adjusting air flow in the pipeline, and the air flow is adjusted by adjusting the area of the pipeline ventilation opening.

Description

Technical Field

[0001] This utility model relates to the technical field of airflow regulation device for a coal mill pulverizer separator, specifically an airflow regulation device for a coal mill pulverizer separator. Background Technology

[0002] For coal mills in coal-fired boilers of thermal power plants, the fineness of pulverized coal varies greatly under different operating conditions. Coarse pulverized coal will result in incomplete combustion, increased boiler losses, and reduced economic efficiency.

[0003] A search revealed that Chinese patent application number 202323595554.4 discloses an airflow regulating device for a coal mill pulverized coal separator, including a separator inlet channel. A vortex guiding area is provided at the inlet end of the separator inlet channel, and two sets of gas angle adjusting mechanisms are provided below the vortex guiding area. A flow regulating mechanism is vertically arranged inside the outlet end of the separator inlet channel. By installing a vortex guiding area inside the separator inlet channel, the flow field inside the inlet channel is adjusted to a certain extent. The gas angle adjusting mechanism installed in the inlet channel can adjust the internal airflow conveying angle by controlling the rotation of the internal guide plate through external operation, thus adapting to various gas transmission states.

[0004] However, existing patents have the following drawbacks:

[0005] The airflow regulating device of this coal mill coal powder separator has a rotary valve head at the upper end of the circular valve plate. The rotary valve head needs to be rotated manually, and the inside of the pipeline cannot be cleaned. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides an airflow regulating device for a coal mill pulverizer separator, which solves the problem that a rotary valve head is provided at the upper end of a circular valve plate, requiring manual rotation and making it impossible to clean the inside of the pipeline.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: It includes a main body, characterized in that: fixing blocks are provided on both inner side walls of the main body; a third motor is provided between the fixing blocks; the third motor is driven by a turbofan blade; ventilation openings are provided at both ends of the main body; several tracks are provided on one side of each ventilation opening; several first motors are provided at the upper end of the main body; the first motors are installed at positions corresponding to the tracks; the first motors are driven by a first threaded rod; the first threaded rod is threadedly connected to a first opening / closing plate; the two ends of the first opening / closing plate are located inside the tracks; several fourth motors are provided at the bottom end of the main body; the fourth motors are correspondingly arranged to the tracks; the fourth motors are driven by a second threaded rod; the second threaded rod is threadedly connected to a second opening / closing plate; the two ends of the second opening / closing plate are located inside the tracks.

[0010] In a preferred embodiment of the present invention, a first cover plate is provided at the upper end of the main body, and a first sealing gasket is provided between the first cover plate and the main body.

[0011] As a preferred embodiment of the present invention, the upper end of the main body is provided with several first connecting blocks, and a threaded hole is provided through the middle of the first connecting block.

[0012] As a preferred embodiment of the present invention, several second connecting blocks are provided on both sides of the first cover plate, and a through threaded hole is provided in the middle of the second connecting block. The second connecting blocks correspond vertically to the first connecting blocks.

[0013] In a preferred embodiment of this invention, a filter box is connected to one side of the main body via a pipe, and a filter element is installed inside the filter box.

[0014] As a preferred embodiment of this utility model, several fourth connecting blocks are fixed on both sides of the filter box, and the fourth connecting blocks are provided with threaded holes through them.

[0015] In a preferred embodiment of this utility model, a second cover plate is provided at the upper end of the filter box, and several third connecting blocks are provided on both sides of the second cover plate, wherein the third connecting blocks correspond to the fourth connecting blocks.

[0016] As a preferred embodiment of the present invention, a second sealing gasket is provided between the filter box and the second cover plate.

[0017] (III) Beneficial Effects

[0018] This utility model provides an airflow regulating device for a coal mill pulverizer separator, which has the following beneficial effects:

[0019] 1. The present invention relates to an airflow regulating device for a coal mill pulverizer separator, which accelerates the internal airflow by setting up a fan.

[0020] 2. The airflow regulating device of the coal mill coal powder separator of this utility model is used to regulate the airflow inside the pipeline by setting an opening and closing plate, and the airflow is regulated by adjusting the area of ​​the pipeline ventilation opening.

[0021] 3. The airflow regulating device of the coal powder separator of the coal mill of this utility model is provided with a cover plate. The cover plate and the main body are detachably connected by bolts, which facilitates internal cleaning. A sealing gasket is provided between the cover plate and the main body to improve the sealing performance. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the main body of this utility model;

[0026] Figure 4 This is a schematic diagram of the filter box structure of this utility model;

[0027] In the diagram: 1. Main body; 2. First sealing gasket; 3. First cover plate; 4. First connecting block; 5. Second connecting block; 6. First motor; 7. Third connecting block; 8. Second cover plate; 9. Filter box; 10. Second sealing gasket; 11. Fourth connecting block; 12. Second motor; 13. Fixing block; 14. Third motor; 15. Turbine fan blade; 16. First opening and closing plate; 17. Filter element; 18. First threaded rod; 19. Ventilation port; 20. Track; 21. Second threaded rod; 22. Second opening and closing plate; 23. Fourth motor. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] Please see Figures 1 to 4This utility model provides a technical solution: an airflow regulating device for a coal powder separator in a coal mill, comprising a main body 1, with fixing blocks 13 arranged on both sides of the inner side wall of the main body 1, a third motor 14 arranged between the fixing blocks 13, and a turbine blade 15 driven by the third motor 14, ventilation openings 19 arranged at both ends of the inner side of the main body 1, and several tracks 20 arranged on one side of the ventilation openings 19, several first motors 6 arranged at the upper end of the main body 1, the first motors 6 being installed at corresponding positions to the tracks 20, the first motors 6 being driven by a first threaded rod 18, the first threaded rod 18 being threadedly connected to a first opening and closing plate 16, the two ends of the first opening and closing plate 16 being located inside the tracks 20, and several fourth motors 23 arranged at the bottom end of the main body 1, the fourth motors 23 being correspondingly arranged to the tracks 20, the fourth motors 23 being driven by a second threaded rod 21, the second threaded rod 21 being threadedly connected to a second opening and closing plate 22, the two ends of the second opening and closing plate 22 being located inside the tracks 20.

[0030] In a specific embodiment of this utility model, fixing blocks 13 are provided on both inner side walls of the main body 1 for mounting a third motor 14. The third motor 14 is positioned between the fixing blocks 13 to provide driving force. The third motor 14 is driven by a turbofan blade 15, which rotates to facilitate airflow and transport of pulverized coal. Ventilation openings 19 are provided at both ends of the main body 1 for airflow. Several tracks 20 are provided on one side of the ventilation openings 19 to provide lifting and lowering slides for the opening and closing plates. Several first motors 6 are provided at the upper end of the main body 1. The first motors 6 are installed at corresponding positions to the tracks 20, allowing the first threaded rod 18 to be placed inside the tracks 20. The first motors 6 are driven by the first threaded rod 18. The first threaded rod 18 is threadedly connected to the first opening and closing plate 16. The two ends of the first opening and closing plate 16 are located inside the track 20. The first opening and closing plate 16 is raised and lowered by the rotation of the first threaded rod 18 driven by the first motor 6. Several fourth motors 23 are set at the bottom of the main body 1. The fourth motors 23 are correspondingly set to the track 20. The fourth motors 23 are driven and connected to the second threaded rod 21. The second threaded rod 21 is threadedly connected to the second opening and closing plate 22. The two ends of the second opening and closing plate 22 are located inside the track 20. The second threaded rod 21 is driven and rotated by the fourth motor 23, thereby raising and lowering the second opening and closing plate 22. The opening size of the ventilation port 19 is adjusted by the cooperation of the first opening and closing plate 16 and the second opening and closing plate 22, thereby adjusting the airflow in the pipe.

[0031] Specifically, the upper end of the main body 1 is provided with a first cover plate 3, and a first sealing gasket 2 is provided between the first cover plate 3 and the main body 1.

[0032] To address the issue of facilitating the cleaning of the interior of the main structure, such as Figure 1As shown, a first cover plate 3 is provided at the upper end of the main body 1. By providing the first cover plate 3, it is convenient for personnel to clean the inside of the main body 1. A first sealing gasket 2 is provided between the first cover plate 3 and the main body 1 to improve the sealing between the two.

[0033] Specifically, the upper end of the main body 1 is provided with several first connecting blocks 4, and a threaded hole is provided through the middle of the first connecting block 4.

[0034] To solve the problem of easy installation of components, such as Figure 1 As shown, the upper end of the main body 1 is provided with several first connecting blocks 4, and the first connecting blocks 4 have threaded holes through the middle to provide a connecting seat for the installation of the components.

[0035] Specifically, several second connecting blocks 5 are provided on both sides of the first cover plate 3. The second connecting block 5 has a through threaded hole in the middle. The second connecting block 5 corresponds vertically to the first connecting block 4.

[0036] To address the issue of facilitating the installation of the first cover plate, such as Figure 1 As shown, several second connecting blocks 5 are provided on both sides of the first cover plate 3. A through threaded hole is provided in the middle of the second connecting block 5. The second connecting blocks 5 correspond to the first connecting blocks 4 vertically and can be installed on the first cover plate 3 by means of bolts.

[0037] Specifically, a filter box 9 is connected to one side of the main body 1 via a pipe, and a filter element 17 is installed inside the filter box 9.

[0038] To solve the problem of filtering large particulate materials, such as Figure 4 As shown, a filter box 9 is connected to one side of the main body 1 via a pipe for installing filter element 17. The filter box 9 is equipped with filter element 17 for filtering large particles, so that the materials that can pass through are relatively fine.

[0039] Specifically, several fourth connecting blocks 11 are fixed on both sides of the filter box 9, and the fourth connecting blocks 11 are provided with threaded holes.

[0040] To address the issue of providing connectors for component mounting, such as Figure 1 As shown, several fourth connecting blocks 11 are fixed on both sides of the filter box 9. The fourth connecting blocks 11 are provided with threaded holes to provide a connecting seat for the installation of the components.

[0041] Specifically, the filter box 9 is provided with a second cover plate 8 at the upper end, and several third connecting blocks 7 are provided on both sides of the second cover plate 8. The third connecting blocks 7 correspond to the fourth connecting blocks 11.

[0042] To solve the problem of installing the second cover plate, such as Figure 1As shown, a second cover plate 8 is provided on the upper end of the filter box 9 to cover the filter box 9. Several third connecting blocks 7 are provided on both sides of the second cover plate 8. The third connecting blocks 7 correspond to the fourth connecting blocks 11 and are detachably threaded to the second cover plate 8 by bolts, which facilitates personnel to remove the second cover plate 8 to replace the filter element 17.

[0043] Specifically, a second sealing gasket 10 is provided between the filter box 9 and the second cover plate 8.

[0044] To address the issue of improving sealing performance, such as Figure 1 As shown, a second sealing gasket 10 is provided between the filter box 9 and the second cover plate 8 to improve the sealing performance between the filter box 9 and the second cover plate 8.

[0045] The detailed description of known functions and components is omitted in this disclosure. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of commercially available instruments.

[0046] In summary, the working principle and usage process of this utility model are as follows: Fixing blocks 13 are provided on both sides of the inner side of the main body 1 for mounting a third motor 14. The third motor 14 is positioned between the fixing blocks 13 to provide driving force. The third motor 14 is connected to a turbine blade 15, which drives the turbine blade 15 to rotate, thus achieving internal airflow and conveying pulverized coal. Ventilation openings 19 are provided at both ends of the inner side of the main body 1 for airflow passage. Several tracks 20 are provided on one side of the ventilation openings 19 to provide lifting and lowering slides for the opening and closing plates. Several first motors 6 are provided at the upper end of the main body 1. The first motors 6 are installed at corresponding positions with the tracks 20 to place the first threaded rod 18 inside the tracks 20. A motor 6 is driven by a first threaded rod 18, which is threadedly connected to a first opening and closing plate 16. Both ends of the first opening and closing plate 16 are located inside the track 20. The first motor 6 drives the first threaded rod 18 to rotate, thus raising and lowering the first opening and closing plate 16. Several fourth motors 23 are installed at the bottom of the main body 1, corresponding to the track 20. Each fourth motor 23 is driven by a second threaded rod 21, which is threadedly connected to a second opening and closing plate 22. Both ends of the second opening and closing plate 22 are located inside the track 20. The fourth motors 23 drive the second threaded rod 21 to rotate, thus raising and lowering the second opening and closing plate 22. Through the cooperation of the first opening and closing plate 16 and the second opening and closing plate 22, passage is achieved. The opening size of the air vent 19 can be adjusted to regulate the airflow within the duct. A first cover plate 3 is installed at the upper end of the main body 1 to facilitate cleaning of the interior. A first sealing gasket 2 is placed between the first cover plate 3 and the main body 1 to improve the seal between them. Several first connecting blocks 4 are installed at the upper end of the main body 1, each with a threaded hole in its center to provide a connection for component installation. Several second connecting blocks 5 are installed on both sides of the first cover plate 3, each with a threaded hole in its center. The second connecting blocks 5 correspond vertically to the first connecting blocks 4 and can be detachably installed using bolts. A filter box 9 is connected to one side of the main body 1 via a pipe for installing filters. The filter box 9 contains a filter element 17 for filtering large particles, allowing the material to pass through to be finer. Several fourth connecting blocks 11 are fixed on both sides of the filter box 9. The fourth connecting blocks 11 have threaded holes through them, providing a connection seat for the installation of the components. A second cover plate 8 is provided at the top of the filter box 9 to cover it. Several third connecting blocks 7 are provided on both sides of the second cover plate 8. The third connecting blocks 7 correspond to the fourth connecting blocks 11 and are detachably threaded to the second cover plate 8 by bolts, which facilitates the removal of the second cover plate 8 for replacement of the filter element 17. A second sealing gasket 10 is provided between the filter box 9 and the second cover plate 8 to improve the sealing between the filter box 9 and the second cover plate 8.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airflow regulating device for a coal mill pulverizer separator, comprising a main body (1), characterized in that: The main body (1) has fixing blocks (13) on both sides of its interior. A third motor (14) is arranged between the fixing blocks (13). The third motor (14) is driven by a turbofan blade (15). Ventilation openings (19) are provided at both ends of the main body (1). Several tracks (20) are provided on one side of the ventilation openings (19). Several first motors (6) are provided at the upper end of the main body (1). The first motors (6) are installed at positions corresponding to the tracks (20). The first motors (6) are driven by a first screw. The first threaded rod (18) is threadedly connected to a first opening and closing plate (16). The two ends of the first opening and closing plate (16) are located inside the track (20). Several fourth motors (23) are provided at the bottom of the main body (1). The fourth motors (23) are correspondingly arranged with the track (20). The fourth motors (23) are driven by a second threaded rod (21). The second threaded rod (21) is threadedly connected to a second opening and closing plate (22). The two ends of the second opening and closing plate (22) are located inside the track (20).

2. The airflow regulating device for a coal mill pulverizer separator according to claim 1, characterized in that: The upper end of the main body (1) is provided with a first cover plate (3), and a first sealing gasket (2) is provided between the first cover plate (3) and the main body (1).

3. The airflow regulating device for a coal mill pulverizer separator according to claim 2, characterized in that: The upper end of the main body (1) is provided with several first connecting blocks (4), and the first connecting blocks (4) are provided with threaded holes through the middle.

4. The airflow regulating device for a coal mill pulverizer separator according to claim 3, characterized in that: Several second connecting blocks (5) are provided on both sides of the first cover plate (3). A through threaded hole is provided in the middle of the second connecting block (5). The second connecting block (5) corresponds to the first connecting block (4) vertically.

5. The airflow regulating device for a coal mill pulverizer separator according to claim 4, characterized in that: A filter box (9) is connected to one side of the main body (1) via a pipe, and a filter element (17) is installed inside the filter box (9).

6. The airflow regulating device for a coal mill pulverizer separator according to claim 5, characterized in that: Several fourth connecting blocks (11) are fixed on both sides of the filter box (9), and the fourth connecting blocks (11) are provided with threaded holes.

7. The airflow regulating device for a coal mill pulverizer separator according to claim 6, characterized in that: The filter box (9) is provided with a second cover plate (8) at the upper end, and several third connecting blocks (7) are provided on both sides of the second cover plate (8). The third connecting blocks (7) correspond to the fourth connecting blocks (11).

8. The airflow regulating device for a coal mill pulverizer separator according to claim 7, characterized in that: A second sealing gasket (10) is provided between the filter box (9) and the second cover plate (8).

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