Coal grinding device for thermal power generation

Abstract

The utility model discloses a coal grinding device for thermal power generation, and relates to the technical field of thermal power generation, coal grinding machinery and coal treatment. A coal grinding device for thermal power generation comprises a barrel body, a supporting plate is fixed to the lower end of the barrel body, a cover plate is installed at the upper end of the barrel body, a first motor is fixed in the supporting plate, and the output end of the first motor extends out of the supporting plate, extends into the barrel body and is fixedly connected with a grinding disc. The telescopic end of the hydraulic telescopic rod is rotationally connected with a plurality of grinding rollers which are distributed in an array mode, a supporting column is arranged on one side of the barrel body, a feeding pipe is arranged on the side face of the supporting column, and a discharging mechanism is arranged between the second motor and the discharging pipe. The coal is conveniently and uniformly conveyed through the discharging mechanism, then a proper amount of desulfurizing agent is added, desulfurization is facilitated, the situation that the load of the coal mill is unstable is reduced, operation and follow-up desulfurization are facilitated, and the influence on the quality of pulverized coal and the service life of the coal mill is reduced.

Description

Technical Field

[0001] The present application relates to the fields of thermal power generation technology, coal grinding machinery technology and coal processing, and in particular to a coal grinding device for thermal power generation. Background Art

[0002] Thermal power has always dominated my country's energy production and consumption, shouldering a significant responsibility for the country's energy security. Despite the country's active promotion of clean energy development in recent years, thermal power generation remains a crucial component of my country's electricity supply, and coal pulverizing equipment is a crucial component of thermal power generation.

[0003] A coal grinding device mentioned in the existing Chinese public patent (authorization announcement number: CN219092208U) includes: a storage mechanism, a driving mechanism and a cut-off mechanism, a feeding port is opened on the outer wall of one side of the storage mechanism, a collecting box is provided in the storage mechanism, the feeding port is connected to the collecting box, the driving mechanism is installed in the collecting box, the cut-off mechanism is installed at the bottom of the storage mechanism, and the cut-off mechanism is connected to the storage mechanism, a conical grinding block is installed at the bottom of the collecting box, the conical grinding block is installed between the driving mechanism and the cut-off mechanism, and a sealing ring is provided between the outer wall of the conical grinding block and the inner wall of the collecting box. The utility model first squeezes the coal by setting the conical grinding block, and uses the extrusion force to crush the coal first. At the same time, the utility model can grind the coal by rotating the conical grinding block, which can effectively improve the grinding effect of the coal, is more practical, and facilitates full utilization of the coal.

[0004] When the coal grinding device is in use, it is used to grind coal for thermal power generation, grinding the coal into coal powder with uniform fineness to facilitate the subsequent use of the coal. The coal is ground by the grinding disc and grinding roller driven by the motor. However, when the above device is in use, it is not convenient for uniform feeding and pretreatment of coal. When in use, it is easy to cause load fluctuation and unstable operation of the coal mill, which is easy to affect the quality of coal powder and the service life of the coal mill, making it inconvenient to use. Utility Model Content

[0005] The purpose of this application is to solve the problem that the above-mentioned device is not convenient for uniform feeding and pretreatment of coal during use, and is prone to load fluctuation and unstable operation of the coal mill during use, which in turn easily affects the quality of coal powder and the service life of the coal mill, and is inconvenient to use. This application provides a coal grinding device for thermal power generation.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A coal grinding device for thermal power generation comprises a barrel body, a support plate is fixed to the lower end of the barrel body, a cover plate is installed on the upper end of the barrel body, a motor 1 is fixed in the support plate, the output end of the motor 1 extends out of the support plate and extends into the barrel body and is fixedly connected to a grinding disc, a hydraulic telescopic rod is fixed to the lower end of the cover plate, the telescopic end of the hydraulic telescopic rod is rotatably connected to a plurality of grinding rollers distributed in an array, the grinding rollers correspond to the grinding disc, a support column is provided on one side of the barrel body, the support column is fixedly connected to the support plate, a feed pipe is provided on the side of the support column, a discharge pipe is provided on one side of the barrel body, a motor 2 is fixed on the side of the support column, and a discharge mechanism is provided between the motor 2 and the discharge pipe.

[0008] By adopting the above technical solution, the coal can be evenly transported through the feeding mechanism, the unstable load of the coal mill can be reduced, the operation and subsequent desulfurization can be facilitated, and the impact on the quality of coal powder and the service life of the coal mill can be reduced.

[0009] Furthermore, the unloading mechanism includes a conveying rod fixed at the output end of motor 2, a conveying pipe is fixed on the side of the support column away from the motor, the conveying pipe is fixedly connected to the barrel body, the output end of the motor passes through the support column and extends into the conveying pipe, the feed pipe is fixedly connected to the conveying pipe, and a conveying assembly is arranged between motor 2 and the conveying pipe.

[0010] By adopting the above technical solution, the rotation of the second motor drives the conveying rod to rotate, thereby facilitating the uniform transportation of the coal.

[0011] Furthermore, the conveying assembly includes conveying blades fixed on the conveying rod and distributed in an array, a stirring rod is fixed on the conveying rod and distributed in an array, the conveying rod corresponds to the conveying blades, and a discharge piece is provided between the barrel body and the discharge pipe.

[0012] By adopting the above technical solution, the conveying rod drives the conveying blades to rotate, thereby conveying and pre-crushing the coal. At the same time, it drives the stirring rod to rotate, thereby crushing the coal, thereby facilitating uniform conveying.

[0013] Furthermore, the unloading part includes a connecting pipe fixed on one side of the barrel body, the end of the connecting pipe away from the barrel body is fixedly connected to a pump, a filter screen is provided in the pump, the pump is fixedly connected to the discharge pipe, and the filter screen corresponds to the connecting pipe.

[0014] By adopting the above technical solution, the incoming coal powder is blocked and filtered by a pair of filter screens, and the coal powder that meets the requirements enters the discharge pipe through a pump, which facilitates uniform discharge, and the blocked coal powder falls down and continues to be ground.

[0015] Furthermore, the feed pipe is trumpet-shaped.

[0016] By adopting the above technical solution, the feed pipe is in a trumpet shape, which is convenient for transporting coal.

[0017] Furthermore, the upper end of the filter screen 1 extends out of the connecting pipe, and the filter screen 1 is fixed to the connecting pipe by bolts.

[0018] By adopting the above technical solution, the bolts on the connecting pipe are screwed to release the restriction on the filter screen 1, the filter screen 1 is removed, and reset after replacement, which is convenient for the staff to clean and replace.

[0019] Furthermore, a blowing pipe is fixedly connected to the side of the barrel body away from the delivery pipe, a bellows is fixedly connected to the end of the blowing pipe away from the barrel body, a box plate is fixedly connected to the end of the bellows away from the blowing pipe, an air intake pipe is fixed on the box plate, and a filter screen 2 is fixed in the air intake pipe by bolts.

[0020] By adopting the above technical solution, wind force causes air to enter from the air inlet pipe, and the second filter screen filters the incoming air to reduce the entry of dust.

[0021] Furthermore, a motor is fixed in the bellows, and fan blades are fixed to the output end of the motor and distributed in an array, and the fan blades correspond to the blowing pipes. A heating tube is fixed in the bellows, and the heating tube is located on the side of the fan blades away from the motor.

[0022] By adopting the above technical solution, the motor drives the fan blades to rotate to generate wind power, the heating tube heats the air, and the coal powder in the barrel is blown to remove moisture, thereby improving the quality of the coal powder.

[0023] In summary, this application has at least one of the following beneficial effects:

[0024] 1. When the coal grinding device is in use, start motor 2. The rotation of motor 2 drives the conveying rod to rotate, so that the conveying rod drives the conveying blades to rotate, transports the coal, and pre-crushes it. At the same time, it drives the stirring rod to rotate to crush the coal, and cooperates with the conveying blades to evenly transport the coal, which is convenient for the stable operation of the coal mill and reduces fluctuations. During grinding, start the pump to extract the ground coal powder in the barrel. The coal powder enters the connecting pipe through suction, and then passes through a pair of filters to block and filter the incoming coal powder. The qualified ones enter the discharge pipe through the pump, which is convenient for uniform discharge. The coal is evenly transported through the discharge mechanism, and then an appropriate amount of desulfurizer is added to facilitate desulfurization, reduce the load instability of the coal mill, facilitate operation and subsequent desulfurization, and reduce the impact on the quality of coal powder and the service life of the coal mill.

[0025] 2. When the coal grinding device is in use, start the motor, which drives the fan blades to rotate to generate wind, allowing air to enter from the air inlet pipe. Filter 2 filters the incoming air to reduce the entry of dust. At the same time, start the heating tube to heat the air and blow air to the coal powder in the barrel to remove moisture, thereby improving the quality of the coal powder, improving combustion performance, and facilitating grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the first structural diagram of the coal grinding device in this application.

[0027] Figure 2 This is the second structural diagram of the coal grinding device in this application.

[0028] Figure 3 This is the first internal structural diagram of the coal grinding device in this application.

[0029] Figure 4 This is the second internal structural diagram of the coal grinding device in this application.

[0030] Description of reference numerals:

[0031] 1. Barrel; 2. Support plate; 3. Cover plate; 4. Motor 1; 5. Hydraulic telescopic rod; 6. Grinding disc; 7. Grinding roller; 8. Feed pipe; 9. Support column; 10. Motor 2; 11. Conveying rod; 12. Conveying blade; 13. Conveying pipe; 14. Stirring rod; 15. Connecting pipe; 16. Pump; 17. Discharge pipe; 18. Filter 1; 19. Inlet pipe; 20. Blowing pipe; 21. Bellows; 22. Box plate; 23. Filter 2; 24. Motor; 25. Fan blade; 26. Heating pipe. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a coal grinding device for thermal power generation.

[0034] Reference Figure 1 and Figure 3 A coal grinding device for thermal power generation includes a barrel body 1, a support plate 2 is fixed at the lower end of the barrel body 1, a cover plate 3 is installed at the upper end of the barrel body 1, a motor 4 is fixed in the support plate 2, the output end of the motor 4 extends out of the support plate 2 and extends into the barrel body 1 and is fixedly connected to a grinding disc 6, a hydraulic telescopic rod 5 is fixed at the lower end of the cover plate 3, the telescopic end of the hydraulic telescopic rod 5 is rotatably connected to a plurality of grinding rollers 7 and distributed in an array, the grinding rollers 7 correspond to the grinding disc 6, a support column 9 is provided on one side of the barrel body 1, the support column 9 is fixedly connected to the support plate 2, a feed pipe 8 is provided on the side of the support column 9, a discharge pipe 17 is provided on one side of the barrel body 1, a motor 2 10 is fixed on the side of the support column 9, and a discharge mechanism is provided between the motor 2 10 and the discharge pipe 17.

[0035] When the coal grinding device is in use, the staff transports the coal raw materials into the feed pipe 8 through an external conveying equipment, and uses the unloading mechanism to facilitate the uniform transportation of the coal. Then, an appropriate amount of desulfurizer is added to facilitate desulfurization, reduce the load instability of the coal mill, facilitate operation, and reduce the impact on the quality of coal powder and the service life of the coal mill. When the coal enters the barrel 1, the motor 4 is started, and the motor 4 drives the grinding disc 6 to rotate. At the same time, the hydraulic telescopic rod 5 is extended and retracted to apply pressure to the grinding roller 7, so as to cooperate with the grinding disc 6 to evenly grind the coal. The ground coal powder is discharged through the discharge pipe 17.

[0036] Reference Figure 2 and Figure 3 The unloading mechanism includes a conveying rod 11 fixed to the output end of the second motor 10. A conveying pipe 13 is fixed to the side of the support column 9 away from the motor. The conveying pipe 13 is fixedly connected to the barrel body 1. The output end of the motor passes through the support column 9 and extends into the conveying pipe 13. The feed pipe 8 is fixedly connected to the conveying pipe 13. A conveying assembly is provided between the second motor 10 and the conveying pipe 13. The conveying assembly includes conveying blades 12 fixed to the conveying rod 11 and distributed in an array. The conveying rod 11 is fixed with stirring rods 14 and distributed in an array. The conveying rod 11 corresponds to the conveying blades 12. A unloading part is provided between the barrel body 1 and the discharge pipe 17. The unloading part includes a connecting pipe 15 fixed to one side of the barrel body 1. The end of the connecting pipe 15 away from the barrel body 1 is fixedly connected to a pump 16. A filter screen 18 is provided in the pump 16. The pump 16 is fixedly connected to the discharge pipe 17. The filter screen 18 corresponds to the connecting pipe 15. The feed pipe 8 is trumpet-shaped. The upper end of the filter screen 18 extends out of the connecting pipe 15, and the filter screen 18 and the connecting pipe 15 are fixed by bolts.

[0037] When the coal grinding device is in use, start the motor 2 10, the motor 2 10 rotates to drive the conveying rod 11 to rotate, so that the conveying rod 11 drives the conveying blade 12 to rotate, to convey the coal and pre-crush it, and at the same time, drives the stirring rod 14 to rotate to crush the coal, and cooperates with the conveying blade 12 to evenly convey the coal, so as to facilitate the stable operation of the coal mill and reduce fluctuations. During grinding, start the pump 16 to extract the ground coal powder in the barrel 1, and the coal powder enters the connecting pipe 15 through suction, and then passes through the filter 18 to block and filter the incoming coal powder. , the coal that meets the requirements enters the discharge pipe 17 through the pump 16, which is convenient for uniform discharge. The blocked coal powder falls and continues to be ground. The feed pipe 8 is trumpet-shaped, which is convenient for coal transportation. When cleaning and replacement are needed, the bolts on the connecting pipe 15 are turned to release the restriction on the filter screen 18, and the filter screen 18 is removed and reset after replacement, which is convenient for the staff to clean and replace. The coal is evenly transported through the discharge mechanism, which reduces the load instability of the coal mill, facilitates operation and subsequent desulfurization, and reduces the impact on the quality of coal powder and the service life of the coal mill.

[0038] Reference Figure 2 and Figure 4 The barrel body 1 is fixedly connected to a blow pipe 20 on the side away from the delivery pipe 13. The end of the blow pipe 20 away from the barrel body 1 is fixedly connected to a bellows 21. The end of the bellows 21 away from the blow pipe 20 is fixedly connected to a box plate 22. The box plate 22 is fixed to the air intake pipe 19. A filter 23 is fixed to the air intake pipe 19 via bolts. A motor 24 is fixed in the bellows 21. The output end of the motor 24 is fixed with fan blades 25 arranged in an array. The fan blades 25 correspond to the blow pipe 20. A heating pipe 26 is fixed in the bellows 21. The heating pipe 26 is located on the side of the fan blades 25 away from the motor 24.

[0039] When the coal grinding device is in use, the motor 24 is started, and the motor 24 drives the fan blades 25 to rotate to generate wind force. The wind force allows air to enter from the air inlet pipe 19, and the filter screen 23 filters the incoming air to reduce the entry of dust. At the same time, the heating pipe 26 is started to heat the air and blow air to the coal powder in the barrel body 1 to remove moisture, thereby improving the quality of the coal powder, improving the combustion performance, and facilitating grinding.

[0040] The working principle of a coal grinding device for thermal power generation in this embodiment is as follows: when the coal grinding device is in use, the staff transports the coal raw materials into the feed pipe 8 through an external conveying device, and the coal is evenly conveyed through the unloading mechanism. Then, an appropriate amount of desulfurizer is added to facilitate desulfurization, reduce the load instability of the coal mill, facilitate operation, and reduce the impact on the quality of the coal powder and the service life of the coal mill. When the coal enters the barrel 1, the motor 4 is started, and the motor 4 drives the grinding disc 6 to rotate. At the same time, the hydraulic telescopic rod 5 is extended and retracted to apply pressure to the grinding roller 7, so as to cooperate with the grinding disc 6 to evenly grind the coal. The ground coal powder is discharged through the discharge pipe 17.

[0041] When the coal grinding device is in use, the motor 2 10 is started, and the motor 2 10 rotates to drive the conveying rod 11 to rotate, so that the conveying rod 11 drives the conveying blade 12 to rotate, to convey the coal and pre-crush it. At the same time, it drives the stirring rod 14 to rotate to crush the coal, and cooperates with the conveying blade 12 to evenly convey the coal, which is convenient for the stable operation of the coal mill and reduces fluctuations. During grinding, the pump 16 is started to extract the ground coal powder in the barrel 1. The coal powder enters the connecting pipe 15 through suction, and then passes through the filter 18 to block and filter the incoming coal powder. The coal powder that meets the requirements enters the discharge pipe 17 through the pump 16, which is convenient for uniform discharge. The blocked coal powder falls and continues to be ground. The feed pipe 8 is trumpet-shaped, which is convenient for coal transportation;

[0042] When the coal grinding device is in use, start the motor 24, which drives the fan blades 25 to rotate and generate wind, so that air enters from the air inlet pipe 19, and the filter screen 23 filters the incoming air to reduce the entry of dust. At the same time, start the heating pipe 26 to heat the air, blow the coal powder in the barrel 1 to remove moisture, improve the quality of the coal powder, improve the combustion performance, and facilitate grinding. When cleaning and replacement are needed, tighten the bolts on the connecting pipe 15 and the air inlet pipe 19 to release the restrictions on the filter screen 18 and the filter screen 2 23, remove the filter screen 18 and the filter screen 2 23, and reset them after replacement.

Claims

1. A coal grinding device for thermal power generation, comprising a barrel (1), characterized in that: A support plate (2) is fixed at the lower end of the barrel body (1), a cover plate (3) is installed at the upper end of the barrel body (1), a motor (4) is fixed in the support plate (2), the output end of the motor (4) extends out of the support plate (2) and extends into the barrel body (1) and is fixedly connected to a grinding disc (6), a hydraulic telescopic rod (5) is fixed at the lower end of the cover plate (3), the telescopic end of the hydraulic telescopic rod (5) is rotatably connected to a plurality of grinding rollers (7) and distributed in an array, the grinding rollers (7) correspond to the grinding disc (6), a support column (9) is provided on one side of the barrel body (1), the support column (9) is fixedly connected to the support plate (2), a feed pipe (8) is provided on the side of the support column (9), a discharge pipe (17) is provided on one side of the barrel body (1), a motor (10) is fixed on the side of the support column (9), and a discharge mechanism is provided between the motor (10) and the discharge pipe (17); The unloading mechanism comprises a conveying rod (11) fixed to the output end of the second motor (10); a conveying pipe (13) is fixed to the side of the support column (9) away from the motor; the conveying pipe (13) is fixedly connected to the barrel body (1); the output end of the motor passes through the support column (9) and extends into the conveying pipe (13); the feed pipe (8) is fixedly connected to the conveying pipe (13); and a conveying assembly is provided between the second motor (10) and the conveying pipe (13); The conveying assembly comprises conveying blades (12) fixed on a conveying rod (11) and distributed in an array, a stirring rod (14) fixed on the conveying rod (11) and distributed in an array, the conveying rod (11) corresponds to the conveying blades (12), and a discharge piece is provided between the barrel body (1) and the discharge pipe (17).

2. A coal grinding device for thermal power generation according to claim 1, characterized in that: The unloading member comprises a connecting pipe (15) fixed to one side of the barrel body (1); an end of the connecting pipe (15) away from the barrel body (1) is fixedly connected to a pump (16); a filter screen (18) is provided inside the pump (16); the pump (16) is fixedly connected to a discharge pipe (17); and the filter screen (18) corresponds to the connecting pipe (15).

3. The coal grinding device for thermal power generation according to claim 1, characterized in that: The feed pipe (8) is trumpet-shaped.

4. The coal grinding device for thermal power generation according to claim 2, characterized in that: The upper end of the filter screen 1 (18) extends out of the connecting pipe (15), and the filter screen 1 (18) and the connecting pipe (15) are fixed by bolts.

5. The coal grinding device for thermal power generation according to claim 1, characterized in that: A blow pipe (20) is fixedly connected to one side of the barrel body (1) away from the delivery pipe (13), a bellows (21) is fixedly connected to one end of the blow pipe (20) away from the barrel body (1), a box plate (22) is fixedly connected to one end of the bellows (21) away from the blow pipe (20), an air intake pipe (19) is fixed on the box plate (22), and a filter screen 2 (23) is fixed in the air intake pipe (19) by means of bolts.

6. The coal grinding device for thermal power generation according to claim 5, characterized in that: A motor (24) is fixed in the bellows (21), and fan blades (25) are fixed to the output end of the motor (24) and are distributed in an array. The fan blades (25) correspond to the blowing pipes (20). A heating pipe (26) is fixed in the bellows (21), and the heating pipe (26) is located on a side of the fan blades (25) away from the motor (24).

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