Hot air pipeline for vertical coal mill

Abstract

The utility model relates to the technical field of cement production pulverized coal preparation hot air systems and waste heat power generation hot air systems, in particular to a hot air pipeline for a coal vertical mill, which comprises a first pipeline, and a second pipeline is arranged at the far end of one side of the first pipeline. The inner sides of the first pipeline and the second pipeline communicate and are symmetrically and fixedly connected with communicating pipes, the communicating pipes communicate and are fixedly connected through a connecting pipe, the center of the connecting pipe is sleeved with and fixedly connected with a circulating butterfly valve, and the center of the upper end face of the circulating butterfly valve is fixedly connected with a rotating motor; the lower output end of the rotating motor penetrates through a shell of the circulation butterfly valve to the interior and is fixedly connected with a rotating shaft, the rotating shaft penetrates through the circulation butterfly valve to the bottom end of the interior, and multiple sets of valve plates are symmetrically and fixedly connected to the two sides of the rotating shaft. The hot air pipeline for the vertical coal mill has the advantages that hot air flowing in the first pipeline can be controlled to flow to the second pipeline through the circulation butterfly valve, and hot air in the first pipeline can be controlled to flow to the circulation butterfly valve through the flow guide plate.

Description

Technical Field

[0001] The utility model relates to the technical fields of a hot air system for pulverized coal preparation and a hot air system for waste heat power generation in cement production, and particularly relates to a hot air pipeline for a coal vertical mill. Background Art

[0002] Since high-temperature reaction is required in cement production, and pulverized coal can burn rapidly at high temperatures to generate a large amount of heat, thus meeting the requirements for the burning of cement clinker. Pulverized coal is the main fuel in the cement production line. At the same time, pulverized coal can also adjust the chemical composition and calorific value of raw meal to ensure the production quality of cement. In the cement production line, according to the different requirements of raw meal, the control of the chemical composition and calorific value of raw meal can be achieved by adjusting the ratio and feeding amount of pulverized coal. When the moisture content of pulverized coal is too high, it will make it difficult to ignite the pulverized coal, reduce the fluidity of the pulverized coal, affect the uniformity of the coal supply amount, and even cause caking. Moisture will also reduce the calorific value of coal because evaporating moisture requires heat absorption, resulting in the actual calorific value of coal being lower than the theoretical calorific value. Therefore, it is necessary to increase the heat supply for pulverized coal preparation. However, in practice, the diameter of the hot air pipeline of the waste heat power generation hot air system designed in the system is larger than that of the hot air pipeline for pulverized coal preparation, and the air volume of the kiln head exhaust fan is much larger than that of the coal mill exhaust fan, resulting in insufficient hot air for pulverized coal preparation and the need to "borrow air" from the waste heat power generation hot air system.

[0003] Therefore, it is necessary to provide a new hot air pipeline for a coal vertical mill to solve the above technical problems. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a hot air pipeline for a coal vertical mill.

[0005] The hot air pipeline for a coal vertical mill provided by the utility model includes:

[0006] A first pipeline, a second pipeline is arranged at the far end of one side of the first pipeline, the inner sides of the first pipeline and the second pipeline are connected and symmetrically fixedly connected with a connecting pipe, and the connecting pipes are connected and fixedly connected through a connecting tube;

[0007] A valve plate, a flow-through butterfly valve is sleeved and fixedly connected at the center of the connecting tube, a rotating motor is fixedly connected at the center of the upper end surface of the flow-through butterfly valve, the lower output end of the rotating motor penetrates through the housing of the flow-through butterfly valve to the inside and is fixedly connected with a rotating shaft, the rotating shaft penetrates through the flow-through butterfly valve to the bottom end inside, and a plurality of groups of valve plates are symmetrically fixedly connected on both sides of the rotating shaft;

[0008] A deflector plate is connected to the outer pipeline at the joint of the first pipeline and the connecting pipe by a push rod motor. An angle shaft is fixedly connected to the outer inner wall at the center of the first pipeline. The deflector plate is fixedly connected to the inner side of the angle shaft. A chute is provided at the center of the rear side of the deflector plate. The output end of the push rod motor penetrates through the first pipeline to the inner end and is fixedly connected to a connecting shaft. The other end of the connecting shaft is fixedly connected to a slider, and the slider is embedded and slidably connected inside the chute.

[0009] Preferably, the first pipeline and the second pipeline are movably connected in sections through a connecting ring. The connecting ring can be used to align the pipelines for convenient connection.

[0010] Preferably, the connecting rings are fixedly connected by fixing bolts in four directions. The fixing bolts can be used to connect the pipelines.

[0011] Preferably, a valve inner liner is fixedly connected to the inner wall of the flow control butterfly valve. The valve inner liner can be used to cooperate with the valve plate to seal the flow control butterfly valve.

[0012] Preferably, filter nets are fixedly connected to the inner walls at both ends of the connecting pipe. The filter nets can be used to prevent impurities from entering the flow control butterfly valve.

[0013] Preferably, a controller is provided at the upper end of one side of the first pipeline. The controller can be used to intuitively operate the flow control butterfly valve and the deflector plate.

[0014] Preferably, the rotary motor and the push rod motor are electrically connected to the controller through wires. The wires can be used to transmit electric power and control signals to each electronic component.

[0015] Preferably, a power cord is fixedly connected to the upper end of the controller. The power cord can be used to provide electric power for each electronic component.

[0016] Compared with the related art, the hot air pipeline for a coal vertical mill provided by the present utility model has the following beneficial effects:

[0017] The present utility model provides a hot air pipeline for a coal vertical mill;

[0018] 1. The present utility model can control the flow of the flow control butterfly valve through the valve plate provided. The output end of the rotary motor can be controlled to rotate by operating the controller, driving the rotating shaft fixedly connected to the output end to rotate, and driving the multiple groups of valve plates symmetrically fixedly connected to both sides of the rotating shaft to rotate, so as to realize controlling the hot air to flow from one end of the flow control butterfly valve to the other end or sealing to prevent the hot air from flowing;

[0019] 2. The utility model can divert the hot air inside the first pipeline through the provided deflector. The output end of the push rod motor can be controlled to expand and contract by operating the controller, driving the connecting shaft fixedly connected to the end of the output end to move, driving the slider to slide on both sides inside the chute opened at the rear side of the deflector, and driving the deflector to flip through the rotationally connected angle shaft, so as to realize diverting the hot air flowing inside the first pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of the overall hot air pipeline for a coal vertical mill provided by the utility model;

[0021] Figure 2 is Figure 1 the front sectional structural diagram of the hot air pipeline for a coal vertical mill shown in FIG.;

[0022] Figure 3 is Figure 2 the enlarged structural diagram of part A shown in FIG.;

[0023] Figure 4 is Figure 1 the side sectional structural diagram of the flow butterfly valve shown in FIG.

[0024] Reference numerals in the figure: 1, first pipeline; 2, second pipeline; 3, connecting pipe; 4, connecting tube; 5, connecting ring; 6, fixing bolt; 7, flow butterfly valve; 8, rotating motor; 9, push rod motor; 10, controller; 11, electric wire; 12, power cord; 13, valve inner liner; 14, rotating shaft; 15, valve plate; 16, filter screen; 17, angle shaft; 18, deflector; 19, chute; 20, slider; 21, connecting shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the objectives, technical solutions and advantages of the utility model more clear and understandable, the following further details the utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0026] The following details the specific implementation of the utility model in conjunction with specific embodiments.

[0027] Please refer to Figures 1 to 4 , a hot air pipeline for a coal vertical mill provided by an embodiment of the utility model, the hot air pipeline for a coal vertical mill includes:

[0028] A first pipeline 1, a second pipeline 2 is provided at the far end of one side of the first pipeline 1, the inner sides of the first pipeline 1 and the second pipeline 2 are connected in communication and symmetrically fixedly connected with a connecting pipe 3, and the connecting pipes 3 are connected in communication and fixedly connected through a connecting tube 4;

[0029] A valve plate 15 is sleeved and fixedly connected at the center of a connecting pipe 4, and a flow-through butterfly valve 7 is fixedly connected thereto. At the center of the upper end face of the flow-through butterfly valve 7, a rotary motor 8 is fixedly connected. The lower output end of the rotary motor 8 penetrates through the housing of the flow-through butterfly valve 7 to the inside and is fixedly connected to a rotating shaft 14. The rotating shaft 14 penetrates through the flow-through butterfly valve 7 to the inner bottom end. On both sides of the rotating shaft 14, a plurality of groups of valve plates 15 are symmetrically and fixedly connected.

[0030] A deflector 18, a push rod motor 9 is connected to the outer pipe at the connection between the first pipe 1 and the connecting pipe 3. On the outer inner wall at the center of the first pipe 1, an angle shaft 17 is fixedly connected. Inside the angle shaft 17, a deflector 18 is fixedly connected. At the center of the rear side of the deflector 18, a chute 19 is provided. The output end of the push rod motor 9 penetrates through the first pipe 1 to the inner end and is fixedly connected to a connecting shaft 21. The other end of the connecting shaft 21 is fixedly connected to a slider 20. The slider 20 is embedded and slidably connected inside the chute 19.

[0031] It should be noted that: the output end of the rotary motor 8 can be controlled to rotate by operating the controller 10, driving the rotating shaft 14 fixedly connected to the output end to rotate, driving a plurality of groups of valve plates 15 symmetrically and fixedly connected on both sides of the rotating shaft 14 to rotate, so as to control the hot air to flow from one end of the flow-through butterfly valve 7 to the other end or to be sealed to prevent the hot air from flowing. The output end of the push rod motor 9 can be controlled to extend and retract by operating the controller 10, driving the connecting shaft 21 fixedly connected to the end of the output to move, driving the slider 20 to slide on both sides inside the chute 19 provided at the rear side of the deflector 18, driving the deflector 18 to flip through the rotationally connected angle shaft 17, so as to divert the hot air flowing inside the first pipe.

[0032] In an embodiment of the present invention, please refer to Figure 1 and Figure 4 , the first pipe 1 and the second pipe 2 are movably connected in sections through a connecting ring 5. By providing the connecting ring 5, the pipes can be aligned for convenient connection.

[0033] In an embodiment of the present invention, please refer to Figure 1 and Figure 4 , the connecting rings 5 are fixedly connected by fixing bolts 6 in four directions. By providing the fixing bolts 6, the pipes can be connected.

[0034] In an embodiment of the present invention, please refer to Figure 1 and Figure 4 , a valve inner liner 13 is fixedly connected to the inner wall of the flow-through butterfly valve 7. By providing the valve inner liner 13, the flow-through butterfly valve 7 can be sealed in cooperation with the valve plate 15.

[0035] In an embodiment of the present invention, please refer to Figure 1 andFigure 4 On both ends of the inner wall of the two sides of the connecting pipe 3, a filter net 16 is fixedly connected. By arranging the filter net 16, impurities can be prevented from entering the flow control butterfly valve 7.

[0036] In an embodiment of the present utility model, please refer to Figure 1 and Figure 4 On the upper end of one side of the first pipe 1, a controller 10 is provided. By arranging the controller 10, the flow control butterfly valve 7 and the guide plate 18 can be intuitively operated.

[0037] In an embodiment of the present utility model, please refer to Figure 1 and Figure 4 The rotary motor 8 and the push rod motor 9 are electrically connected to the controller 10 through the electric wire 11. By arranging the electric wire 11, electric power and control signals can be transmitted to each electronic component.

[0038] In an embodiment of the present utility model, please refer to Figure 1 and Figure 4 On the upper end of the controller 10, a power cord 12 is fixedly connected. By arranging the power cord 12, electric power can be provided for each electronic component.

[0039] The working principle of the hot air pipe for the coal vertical mill provided by the present utility model is as follows:

[0040] When in use, the hot air inside the first pipe can be diverted through the arranged guide plate. The output end of the push rod motor 9 can be controlled to extend and retract by operating the controller 10, driving the connecting shaft 21 fixedly connected to the end of the output end to move, driving the slider 20 to slide on both sides inside the chute 19 opened at the rear side of the guide plate 18 to one end, driving the guide plate 18 to flip through the rotationally connected angle shaft 17, so as to divert the hot air flowing inside the first pipe. The output end of the push rod motor 9 can be controlled to extend and retract by operating the controller 10, driving the connecting shaft 21 fixedly connected to the end of the output end to move, driving the slider 20 to slide on both sides inside the chute 19 opened at the rear side of the guide plate 18 to the other end, driving the guide plate 18 to be laid flat through the rotationally connected angle shaft 17 to allow the hot air to flow through. Then, the output end of the rotary motor 8 can be controlled to rotate by operating the controller 10, driving the rotating shaft 14 fixedly connected to the output end to rotate, driving multiple groups of valve plates 15 symmetrically and fixedly connected on both sides of the rotating shaft 14 to rotate, flipping the valve plates 15 to the front, so as to control the hot air to flow from one end of the flow control butterfly valve 7 to the other end, or operating the controller 10 to control the output end of the rotary motor 8 to rotate, driving the rotating shaft 14 fixedly connected to the output end to rotate, driving multiple groups of valve plates 15 symmetrically and fixedly connected on both sides of the rotating shaft 14 to rotate, flipping the valve plates 15 to the side to seal the flow control butterfly valve to prevent the hot air from flowing through.

[0041] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. A hot air duct for a coal vertical mill, characterized in that: include: A first pipeline (1), a second pipeline (2) being arranged at a distal end of one side of the first pipeline (1), a connecting pipe (3) being connected to and symmetrically fixedly connected to the inner sides of the first pipeline (1) and the second pipeline (2), and the connecting pipes (3) being connected to and fixedly connected to each other via a connecting pipe (4); A valve plate (15), wherein a circulation butterfly valve (7) is sleeved and fixedly connected at the center of the connecting pipe (4), a rotating motor (8) is fixedly connected at the center of the upper end surface of the circulation butterfly valve (7), a lower output end of the rotating motor (8) passes through the housing of the circulation butterfly valve (7) to the inside and is fixedly connected to a rotating shaft (14), the rotating shaft (14) passes through the circulation butterfly valve (7) to the bottom end inside, and multiple groups of valve plates (15) are symmetrically fixedly connected on both sides of the rotating shaft (14); A guide plate (18), the outer pipe of the connection between the first pipe (1) and the connecting pipe (3) is connected to a push rod motor (9), the outer inner wall at the center of the first pipe (1) is fixedly connected to an angle shaft (17), the inner side of the angle shaft (17) is fixedly connected to the guide plate (18), a slide groove (19) is opened at the center of the rear side surface of the guide plate (18), the output end of the push rod motor (9) passes through the first pipe (1) to the inner end fixedly connected to a connecting shaft (21), the other end of the connecting shaft (21) is fixedly connected to a slider (20), and the slider (20) is embedded and slidably connected inside the slide groove (19).

2. The hot air duct for coal vertical mill according to claim 1, characterized in that: The first pipeline (1) and the upper segments of the second pipeline (2) are movably connected via a connecting ring (5).

3. The hot air duct for coal vertical mill according to claim 2 is characterized in that: The connecting rings (5) are fixedly connected by fixing bolts (6) in four directions.

4. The hot air duct for coal vertical mill according to claim 1, characterized in that: A valve liner (13) is fixedly connected to the inner wall of the circulation butterfly valve (7).

5. The hot air duct for coal vertical mill according to claim 1, characterized in that: Filter screens (16) are fixedly connected to the inner walls of both ends of the connecting pipe (3).

6. The hot air duct for coal vertical mill according to claim 1, characterized in that: A controller (10) is provided at an upper end of one side of the first pipeline (1).

7. The hot air duct for coal vertical mill according to claim 6, characterized in that: The rotating motor (8) and the push rod motor (9) are electrically connected to the controller (10) via an electric wire (11).

8. The hot air duct for coal vertical mill according to claim 6, characterized in that: The upper end of the controller (10) is fixedly connected to a power line (12).

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