Accurate control device for fire coal feeding

Abstract

The utility model relates to the technical field of fire coal feeding, in particular to a fire coal feeding accurate control device. The utility model provides the accurate control device for fire coal feeding, which is convenient for controlling the blanking rate of pulverized coal according to the actual combustion condition and ensuring the combustion efficiency. A fire coal feeding accurate control device comprises a discharging hopper, connecting pieces, a control box, a motor, a six-petal butterfly valve and the like, the upper portion of the discharging hopper is connected with the connecting pieces, the lower portion of the discharging hopper is connected with the control box, the motor is connected into the control box, and an output shaft of the motor is connected with the six-petal butterfly valve. The output shaft of the motor rotates to drive the six-petal butterfly valve to rotate, the six-petal butterfly valve rotates to drive pulverized coal in the discharging hopper to be discharged, the rotating speed of the output shaft of the motor and the rotating speed of the six-petal butterfly valve are automatically adjusted through the control module according to collected data, the discharging speed of the pulverized coal can be conveniently controlled according to the actual combustion condition, and the discharging efficiency of the pulverized coal is improved. And the combustion efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of coal feeding, in particular to a coal feeding precision control device. Background Art

[0002] Pulverized coal is a form of fuel obtained by crushing coal into fine particles. It has high combustion efficiency and is easy to control. When using pulverized coal as a fuel, a continuous supply of pulverized coal is required to maintain stable temperature and combustion efficiency within the combustion chamber. If the pulverized coal supply is interrupted, the combustion process may be affected, resulting in a drop in temperature or incomplete combustion.

[0003] Patent publication number CN212023593U discloses a pulverized coal flow distribution and adjustment device for a coal-fired boiler. This device addresses the problem of poorly controlled pulverized coal flow during boiler operation, which can easily affect combustion performance and waste coal resources due to excessive pulverized coal flow. The device comprises a housing, the top of which is provided with an inlet, the bottom of which is provided with an outlet, two support plates symmetrically fixedly mounted on the bottom of the housing, a sleeve fixedly mounted on the top inner wall of the housing, a push rod movably mounted within the sleeve, the push rod and the sleeve being adapted to fit, a pressure plate fixedly mounted on one end of the push rod, the pressure plate being adapted to fit the outlet, and a beveled pressure plate. A drive motor is fixedly mounted on one side of the housing, and one side of the drive shaft is fixedly mounted on the output shaft of the drive motor. This device can control the maximum pulverized coal flow rate to ensure that coal resources are not wasted, thereby significantly improving the combustion efficiency of the pulverized coal.

[0004] Although the above-mentioned existing device can control the maximum delivery rate of coal powder, it is difficult to control the feeding rate of coal powder according to the actual combustion conditions, which can easily lead to incomplete combustion and affect the combustion efficiency. Therefore, a coal feeding precision control device has been developed to facilitate the control of the feeding rate of coal powder according to the actual combustion conditions and ensure the combustion efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of existing devices that are difficult to control the feeding rate of coal powder according to actual combustion conditions, which easily leads to incomplete combustion and affects combustion efficiency, the utility model provides a coal feeding precision control device that is convenient for controlling the feeding rate of coal powder according to actual combustion conditions and ensuring combustion efficiency.

[0006] Technical solution: A precise control device for coal feeding, including a hopper, connecting parts, a control box, a motor, a six-petal butterfly valve and a control module. The upper part of the hopper is connected to multiple connecting parts, and the lower part of the hopper is connected to the control box. The control box is connected to a motor, and the motor output shaft is connected to a six-petal butterfly valve. The six-petal butterfly valve is located in the lower part of the hopper and is rotatably connected to the hopper. A control module is provided in the control box, and the control module is connected to the motor. The rotation of the motor output shaft drives the six-petal butterfly valve to rotate, and the rotation of the six-petal butterfly valve drives the coal powder in the hopper to be discharged. The temperature, pressure and oxygen content parameters of the combustion process are monitored by various sensors installed inside and outside the combustion chamber, and the speed of the motor output shaft is automatically adjusted through the control module according to the collected data, thereby adjusting the speed of the six-petal butterfly valve, and then controlling the coal powder discharge rate.

[0007] As an improvement to the above solution, mounting holes are provided on the connecting pieces.

[0008] As an improvement to the above solution, heat dissipation holes are opened on the control box.

[0009] As an improvement to the above solution, it also includes a cover and a handle. The cover is rotatably connected to the upper side of the control box, and the handle is connected to the upper side of the cover. When the handle is pulled to rotate and open the cover, it is convenient to inspect and maintain the internal equipment of the control box.

[0010] As an improvement to the above scheme, it also includes a cooling fan and a transmission assembly. The cooling fan is connected to the control box, and a transmission assembly is connected between the cooling fan and the motor output shaft. The rotation of the motor output shaft drives the cooling fan to rotate through the transmission assembly. The speed of the motor output shaft controls the speed of the cooling fan. The cooling fan is used to dissipate heat in the control box to avoid the spontaneous combustion of coal powder caused by excessive temperature during equipment operation.

[0011] As an improvement to the above scheme, it also includes a connecting seat, a clamping plate, a torsion spring and a filter screen. The upper side of the connecting piece is connected to a connecting seat, and the connecting seat is rotatably connected to a clamping plate. The clamping plates are connected to adjacent connecting seats by multiple torsion springs. A filter screen is provided on the upper side of the lower hopper, and the filter screen is located between the clamping plates. Under the action of the torsion spring, the clamping plate is driven to clamp and fix the filter screen to prevent the position of the filter screen from shifting.

[0012] The beneficial effects are: 1. The utility model drives the six-petal butterfly valve to rotate by rotating the motor output shaft, and the rotation of the six-petal butterfly valve drives the coal powder in the hopper to be discharged, and automatically adjusts the rotation speed of the motor output shaft and the six-petal butterfly valve through the control module according to the collected data, which can achieve the effect of facilitating the control of the coal powder discharge rate according to the actual combustion conditions and ensuring the combustion efficiency.

[0013] 2. The utility model drives the cooling fan to rotate by rotating the motor output shaft. The speed of the motor output shaft controls the speed of the cooling fan, which can effectively dissipate heat in the control box and avoid the spontaneous combustion of coal powder caused by excessive temperature when the equipment is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a structural diagram of the present utility model.

[0016] Figure 3 This is a sectional view of the first three-dimensional structure of the present utility model.

[0017] Figure 4 This is a cross-sectional view of the second three-dimensional structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting seat, pressing plate, torsion spring and filter screen of the utility model.

[0019] The numbers in the figure are: 1. Hopper, 2. Connector, 3. Control box, 4. Cover, 5. Handle, 6. Motor, 7. Six-petal butterfly valve, 8. Control module, 9. Cooling fan, 10. Transmission assembly, 11. Connecting seat, 12. Pressing plate, 13. Torsion spring, 14. Filter. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] A coal feed precision control device, such as Figure 1-Figure 5As shown, it includes a hopper 1, a connecting piece 2, a control box 3, a motor 6, a six-petal butterfly valve 7 and a control module 8. The upper part of the hopper 1 is connected to four connecting pieces 2, the lower part of the hopper 1 is connected to the control box 3, the control box 3 is connected to the motor 6, the output shaft of the motor 6 is connected to the six-petal butterfly valve 7, the six-petal butterfly valve 7 is located in the lower part of the hopper 1 and is rotatably connected to the hopper 1, a control module 8 is provided in the control box 3, the control module 8 is connected to the motor 6, the output shaft of the motor 6 rotates to drive the six-petal butterfly valve 7 to rotate, and the rotation of the six-petal butterfly valve 7 drives the pulverized coal in the hopper 1 to be discharged, and the temperature, pressure and oxygen content parameters of the combustion process are monitored by various sensors installed inside and outside the combustion chamber, and the speed of the output shaft of the motor 6 is automatically adjusted by the control module 8 according to the collected data, thereby adjusting the speed of the six-petal butterfly valve 7, and then controlling the discharge rate of the pulverized coal;

[0022] It also includes a cover plate 4 and a handle 5. The cover plate 4 is rotatably connected to the upper side of the control box 3. The handle 5 is connected to the upper side of the cover plate 4. When the handle 5 is pulled to rotate and open the cover plate 4, it is convenient to inspect and repair the internal equipment of the control box 3.

[0023] It also includes a cooling fan 9 and a transmission assembly 10. The cooling fan 9 is connected to the control box 3. The transmission assembly 10 is connected between the cooling fan 9 and the output shaft of the motor 6. The output shaft of the motor 6 rotates through the transmission assembly 10 to drive the cooling fan 9 to rotate. The speed of the output shaft of the motor 6 controls the speed of the cooling fan 9. The cooling fan 9 is used to dissipate heat in the control box 3 to prevent the coal powder from spontaneously combusting due to excessive temperature during equipment operation.

[0024] It also includes a connecting seat 11, a clamping plate 12, a torsion spring 13 and a filter 14. The upper side of the connecting member 2 is connected to the connecting seat 11, and the connecting seat 11 is rotatably connected to the clamping plate 12. Two torsion springs 13 are connected between the clamping plates 12 and the adjacent connecting seats 11. A filter 14 is provided on the upper side of the lower hopper 1. The filter 14 is located between the clamping plates 12. Under the action of the torsion spring 13, the clamping plate 12 is driven to clamp and fix the filter 14 to prevent the position of the filter 14 from shifting.

[0025] When the present invention is in use, it is first necessary to install the present invention in the operating area, and then make the filter screen 14 be located between the pressing plates 12, and drive the pressing plates 12 to press and fix the filter screen 14 under the action of the torsion spring 13, so as to prevent the position of the filter screen 14 from being shifted. Then, the coal powder is transported to the discharge hopper 1 for temporary storage, and the coal powder is filtered through the filter screen 14 to prevent large particles of coal from clogging the discharge hopper 1 during the discharge process. When discharge is required, the output shaft of the control motor 6 is rotated to drive the six-petal butterfly valve 7 to rotate, and the rotation of the six-petal butterfly valve 7 drives the coal powder in the discharge hopper 1 to discharge. At the same time, the temperature, pressure and oxygen content parameters of the combustion process are monitored by various sensors installed inside and outside the combustion chamber, and the speed of the output shaft of the motor 6 is automatically adjusted according to the collected data through the control module 8, thereby adjusting the speed of the six-petal butterfly valve 7, and then controlling the discharge rate of the coal powder according to the actual combustion conditions. The output shaft of the motor 6 rotates through the transmission component 10 to drive the cooling fan 9 to rotate, and the motor 6 output shaft speed controls the speed of the cooling fan 9. The faster the output shaft speed of the motor 6, the faster the speed of the cooling fan 9. The cooling fan 9 is used to effectively dissipate heat in the control box 3 to prevent the coal powder from spontaneously combusting due to excessive temperature during equipment operation. When it is necessary to clean the large particles of coal intercepted on the filter screen 14, the filter screen 14 can be directly pulled upward. The filter screen 14 moves and drives the pressing plate 12 to rotate on the connecting seat 11. The torsion spring 13 is deformed by the force. After the filter screen 14 is separated from the pressing plate 12, the torsion spring 13 rebounds and drives the pressing plate 12 to rotate and reset. After the filter screen 14 is cleaned, the pressing plate 12 is pulled upward on the connecting seat 11 to rotate. The torsion spring 13 is deformed by the force, and the filter screen 14 is placed on the upper side of the lower hopper 1. At this time, the torsion spring 13 rebounds and drives the pressing plate 12 to rotate and reset, thereby clamping the filter screen 14. When the control box 3 fails, the handle 5 can be pulled to drive the cover plate 4 to rotate and open, which is convenient for repairing the internal equipment of the control box 3.

[0026] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A coal feed precision control device, characterized in that: The invention comprises a lower hopper (1), a connecting piece (2), a control box (3), a motor (6), a six-flap butterfly valve (7) and a control module (8). The upper part of the lower hopper (1) is connected to a plurality of connecting pieces (2), the lower part of the lower hopper (1) is connected to the control box (3), the motor (6) is connected inside the control box (3), the output shaft of the motor (6) is connected to the six-flap butterfly valve (7), the six-flap butterfly valve (7) is located in the lower part of the lower hopper (1) and is rotatably connected to the lower hopper (1), the control module (8) is arranged inside the control box (3), and the control module (8) is connected to the motor (6).

2. A coal feed precision control device as claimed in claim 1, characterized in that: The connecting pieces (2) are all provided with mounting holes.

3. The coal feed precision control device according to claim 1, characterized in that: The control box (3) is provided with heat dissipation holes.

4. A coal feed precision control device as claimed in claim 3, characterized in that: It also includes a cover plate (4) and a handle (5). The upper side of the control box (3) is rotatably connected to the cover plate (4), and the upper side of the cover plate (4) is connected to the handle (5).

5. A coal feed precision control device as claimed in claim 4, characterized in that: It also includes a cooling fan (9) and a transmission assembly (10). The cooling fan (9) is connected to the control box (3), and the transmission assembly (10) is connected between the cooling fan (9) and the output shaft of the motor (6).

6. A coal feed precision control device as claimed in claim 5, characterized in that: The invention also includes a connecting seat (11), a pressing plate (12), a torsion spring (13) and a filter (14); the upper side of the connecting member (2) is connected to the connecting seat (11); the connecting seat (11) is rotatably connected to the pressing plate (12); a plurality of torsion springs (13) are connected between the pressing plates (12) and the adjacent connecting seats (11); a filter (14) is provided on the upper side of the lower hopper (1); and the filter (14) is located between the pressing plates (12).

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