Separating device for adjusting fineness of pulverized coal of coal mill
Through the automated telescopic control system and electro-hydraulic push rod device, the precise adjustment of the angle of the folding plate of the coal mill is achieved, which solves the problem of inaccurate manual adjustment of traditional coal mills, and improves the control accuracy and production of coal fineness efficiency.
Patent Information
- Application Number
- CN202420037411.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-05
AI Technical Summary
Traditional coal mills require manual operation of static separators to adjust the angle of the folding plate, resulting in inaccurate adjustment and ineffective control of the fineness of the coal powder.
An automated separation device is designed, and the telescopic controller and electro-hydraulic push rod system is used to remotely control the angle adjustment of the folding plate through the central shaft, connecting rod and connecting rod mechanism to achieve automatic and accurate adjustment of the folding plate angle.
It reduces the labor intensity of workers' operations, improves the accuracy of adjustment of fineness of coal powder and production efficiency, and ensures the consistency of fineness of coal powder.
Smart Images
Figure CN222132166U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mill auxiliary equipment, in particular to a separation device used for a coal mill to adjust the fineness of coal powder. Background Art
[0002] Coal mill is a kind of pulverizing equipment, which is widely used in building materials, metallurgy, electric power, chemical industry and other industries. It can grind raw materials such as block, granular and powder into powder materials required by the system. The coal mill rotates the grinding parts, blows the ground powder to the separator position on the top of the coal mill through the hot air flow of the system, and the coarse powder is separated and re-ground. After the above processing, the coal mill grinds out qualified powder and sends it to the required burner and other devices. There is usually a circle of folding plates at the top of the coal mill. The angle of the folding plate is adjusted synchronously by using the cyclone separation principle. The size of the angle affects the fineness of the screened coal powder. The traditional coal mill uses a static separator to adjust the folding plate. Workers need to go to the site to operate the static separator. The adjustment workload is large, the site environment is poor, and the adjustment of the folding plate is stuck. The angle of the folding plate cannot be guaranteed, and the fineness of the coal powder cannot be accurately adjusted. Therefore, it is necessary to design a separation device that can automatically and accurately adjust the angle of the folding plate. Utility Model Content
[0003] In order to solve the problems existing in the prior art, the utility model provides a separation device for adjusting the fineness of coal powder in a coal mill, thereby avoiding the problem of manual adjustment of the deflection plate, inability to accurately adjust the angle of the deflection plate, and inability to ensure the fineness of the coal powder.
[0004] The technical solution of the utility model is as follows:
[0005] A separation device for adjusting the fineness of coal powder in a coal mill, the device is connected to a folding plate of the coal mill, the coal mill includes a control system, one end of the folding plate is rotatably connected to the coal mill, the coal mill is connected to a telescopic mechanism, the telescopic mechanism is connected to a central axis, connecting rods are rotatably connected between the folding plates, any of the connecting rods is rotatably connected to a connecting rod mechanism, and the connecting rod mechanism is connected to the central axis.
[0006] Furthermore, the telescopic mechanism includes a telescopic controller connected to a control system signal, the telescopic controller is connected to a telescopic component, the control system sends a signal to the telescopic controller, and the telescopic controller controls the telescopic component to extend or retract.
[0007] Furthermore, the telescopic component is a telescopic structure such as an electro-hydraulic push rod or a cylinder.
[0008] Furthermore, the telescopic assembly is connected to an adjusting rod, and the adjusting rod is fixedly connected to the central axis.
[0009] Furthermore, the electro-hydraulic push rod comprises an output shaft, a pin hole is provided at the end of the output shaft, a slide groove is provided on the adjusting rod, and a pin shaft is provided through the pin hole and the slide groove.
[0010] Furthermore, the deflection plate is ball-hinged with the connecting rod, and other rotatable structures may also be used.
[0011] Furthermore, the connecting rod mechanism includes a cross bar fixedly connected to the central axis, and the cross bar is fixedly connected to a vertical bar, and the cross bar and the vertical bar are fixedly connected.
[0012] Furthermore, the vertical rod is rotatably connected to the connecting rod.
[0013] Furthermore, the vertical rod and the connecting rod are connected via a bearing.
[0014] Furthermore, the telescopic mechanism is connected to the coal mill via a base.
[0015] Compared with the prior art, the utility model has the following beneficial effects: a telescopic controller is provided to control the extension or retraction of the electro-hydraulic push rod, thereby driving the central axis, horizontal rod, vertical rod and connecting rod to rotate, thereby driving the folding plate to rotate and adjusting the angle of the folding plate. The structure is simple, the electro-hydraulic push rod can be remotely controlled, the labor intensity of workers is reduced, the angle adjustment of the folding plate is more accurate, the fineness of the coal powder is ensured, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the installation of the utility model;
[0017] Figure 2 It is a schematic diagram of the utility model;
[0018] Figure 3 This is a top view of the connecting rod of the utility model;
[0019] Figure 4 This is a top view of the connection between the electro-hydraulic push rod and the adjusting rod of the utility model.
[0020] In the figure: 1 folding plate; 2 coal mill; 3 central shaft; 4 connecting rod; 5 telescopic controller; 6 electro-hydraulic push rod; 7 adjusting rod; 8 cross bar; 9 vertical bar; 10 base; 11 output shaft; 12 pin shaft; 13 slide groove. DETAILED DESCRIPTION
[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a separation device for adjusting the fineness of coal powder in a coal mill is used. The separation device is connected to a deflection plate 1 of the coal mill. The coal mill 2 includes a control system. One end of the deflection plate 1 is rotatably connected to the coal mill 2. The telescopic mechanism is connected to the coal mill 2 through a base 10, which can be welded. The telescopic mechanism is connected to a center axis 3, which passes through the top of the coal mill 2. A seal can be provided at the connection to prevent coal powder from flowing out of the contact point between the center axis 3 and the coal mill 2. A connecting rod 4 is rotatably connected between each deflection plate 1. The deflection plate 1 and the connecting rod 4 are ball-hinged. Other linkage structures can also be used. Any connecting rod 4 is rotatably connected to a connecting rod mechanism, which is connected to the center axis 3. In order to ensure the accuracy of the separation device, two separation devices can be set corresponding to 180° directions. The control system controls the two separation devices at the same time, which can improve the service life of the separation device and ensure the fineness of the coal powder.
[0022] The telescopic mechanism includes a telescopic controller 5 connected to the control system signal. The telescopic controller 5 is connected to a telescopic component, which is an electro-hydraulic push rod 6 or a telescopic structure such as a cylinder. The control system sends a signal to the telescopic controller 5, and the telescopic controller 5 controls the electro-hydraulic push rod 6 to extend or retract.
[0023] The electro-hydraulic push rod 6 is rotatably connected to the adjusting rod 7. The electro-hydraulic push rod 7 includes an output shaft 11. A pin hole is provided at the end of the output shaft 11. A slide groove 13 is provided on the adjusting rod 7. A pin shaft 12 is provided through the pin hole and the slide groove 13. The diameter of the pin hole is matched with the pin shaft 12 or slightly larger than the diameter of the pin shaft 12. When the output shaft 11 moves linearly left and right, the pin shaft 12 slides in the slide groove 13, and the adjusting rod 7 is fixedly connected to the central axis 3.
[0024] The connecting rod mechanism includes a cross bar 8 fixedly connected to the central axis 3 , and the cross bar 8 is fixedly connected to a vertical bar 9 . The cross bar 8 and the vertical bar 9 are fixedly connected. As the central axis 3 rotates, the vertical bar 9 moves in a circle around the central axis 3 .
[0025] The vertical rod 9 is rotatably connected to the connecting rod 4. The vertical rod 9 can be vertically arranged at the midpoint of the connecting rod 4 and can be connected via a bearing.
[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the screening of the coal mill is achieved by changing the angle of the deflection plate 1. The larger the angle between the deflection plates 1, the stronger the swirl, and the finer the screened coal powder. The coal powder is guided by the guide plate 1 and changes direction to rotate. During the rotation, the coal powder is subjected to centrifugal force. The fine coal powder is subjected to a small centrifugal force and is transported out with the hot air. The coarse coal powder has a large centrifugal force and collides with the outer wall of the inner vertebral body and falls back to the grinding disc for re-grinding, thereby achieving the separation of coarse and fine powders. When finer coal powder is needed, the angle of the deflection plate 1 needs to be increased, and the workers use The coal mill control system sends a signal to the telescopic controller 5, and the telescopic controller 5 controls the output shaft 11 of the electro-hydraulic push rod 6 to extend linearly. The output shaft 11 and the adjusting rod 7 are connected by the pin 12. As the output shaft 11 extends and moves linearly, the pin 12 slides downward in the slide groove 13, and the adjusting rod 7 can rotate counterclockwise at a certain angle with the central axis 3 as the center. The central axis 3 rotates, and the vertical rod 9 moves around the central axis 3 at a certain angle. The vertical rod 9 is connected to the connecting rod 4 for vertical rotation, driving the connecting rod 4 on the horizontal plane. Movement, each folding plate 1 is rotatably connected by a connecting rod 4, thereby driving all the folding plates 1 to rotate a certain angle on the same horizontal plane, realizing the linkage of all the folding plates 1. When rotating a certain angle, the control system can send a signal to control the telescopic controller 5, thereby controlling the output shaft 11 to stop extending and maintain the angle of the folding plate 1. The extension length of the output shaft 11 can be controlled as needed to adjust the angle of the folding plate 1; when coarser coal powder is needed, the output shaft 11 retracts in the opposite direction, and the adjusting rod 7, the central axis 3, the cross bar 8, and the vertical rod 9 run in the opposite direction, and the angle of the folding plate 1 is reduced. The device can control the folding plate 1 to reciprocate and rotate a certain angle to realize remote control of the coarseness of the coal powder. Workers can also go directly to the site, remove the pin 12, and manually push the adjusting rod 7 to adjust the angle of the folding plate 1. The device has a simple structure, can remotely and automatically control the angle of the folding plate 1, control the fineness of the coal powder, improve the adjustment accuracy of the folding plate 1, and ensure the fineness of the coal powder. The adjusting rod 7 can also be pushed on the spot to adjust the angle of the folding plate, which is easy to operate and has high efficiency.
[0027] The above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A separation device for adjusting the fineness of coal powder in a coal mill, the device is connected to a deflection plate of the coal mill, the coal mill includes a control system, one end of the deflection plate is rotatably connected to the coal mill, and is characterized in that: The coal mill is connected with a telescopic mechanism, the telescopic mechanism is connected with a central axis, connecting rods are rotatably connected between the folding plates, any connecting rod is rotatably connected with a connecting rod mechanism, and the connecting rod mechanism is connected with the central axis.
2. A separation device for adjusting the fineness of coal powder in a coal mill according to claim 1, characterized in that: The telescopic mechanism includes a telescopic controller connected to a control system signal, the telescopic controller is connected to a telescopic component, the control system sends a signal to the telescopic controller, and the telescopic controller controls the telescopic component to extend or retract.
3. A separation device for adjusting the fineness of coal powder in a coal mill according to claim 2, characterized in that: The telescopic component is an electro-hydraulic push rod.
4. A separation device for adjusting the fineness of coal powder in a coal mill according to claim 3, characterized in that: The telescopic assembly is connected with an adjusting rod, and the adjusting rod is fixedly connected to the central axis.
5. A separation device for adjusting the fineness of coal powder in a coal mill according to claim 4, characterized in that: The electro-hydraulic push rod comprises an output shaft, a pin hole is arranged at the end of the output shaft, a slide groove is arranged on the adjusting rod, and a pin shaft is arranged through the pin hole and the slide groove.
6. The separation device for adjusting the fineness of coal powder in a coal mill according to claim 1, characterized in that: The deflection plate is spherically hinged to the connecting rod.
7. The separation device for adjusting the fineness of coal powder in a coal mill according to claim 1, characterized in that: The connecting rod mechanism comprises a cross bar fixedly connected to the central axis, and the cross bar is fixedly connected to a vertical rod.
8. A separation device for adjusting the fineness of coal powder in a coal mill according to claim 7, characterized in that: The vertical rod is rotatably connected to the connecting rod.
9. A separation device for adjusting the fineness of coal powder in a coal mill according to claim 8, characterized in that: The vertical rod is connected to the connecting rod through a bearing.
10. The separation device for adjusting the fineness of coal powder in a coal mill according to claim 1, characterized in that: The telescopic mechanism is connected to the coal mill through a base.