Air taking pipe structure of coal mill

Abstract

The utility model relates to the field of coal mine processing, in particular to a coal mill air taking pipe structure which comprises a gas collecting hood, a hydraulic cylinder, guide plates and a baffle, the gas collecting hood is fixed at the upper end of a machine body through screws, the guide plates which are symmetrically arranged on two sides and are distributed in a linear array are rotatably arranged in the gas collecting hood, and the guide plates are arranged through rotating shafts. A liftable baffle is arranged at the lower end of the gas collecting hood, a moving block is fixed to the upper end of the baffle, a rotating ring is rotationally installed in the moving block, a hydraulic cylinder is fixed to one side of the upper end of the gas collecting hood, and a temperature sensor is arranged at the lower end of the hydraulic cylinder. According to the device, the effect of adjusting the opening degree of the two sides of the flow guide plate can be achieved through the temperature sensor and the airflow intensity, and the problems that the airflow cannot be rapidly and efficiently absorbed and follow-up efficient pulverized coal combustion is affected due to the fact that existing pulverized coal gas absorption lacks the temperature of the self-adaptive opening degree are solved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining, and in particular to a coal mill ventilation duct structure. Background Technology

[0002] The coal mill air intake is used to introduce fresh air into the coal mill equipment to support the coal grinding process. This helps improve equipment operating efficiency and the quality of the coal powder.

[0003] While existing technologies can achieve a certain degree of coal powder gas absorption, they suffer from the following drawback: the lack of temperature-adaptive opening for coal powder gas absorption results in the inability to achieve rapid and efficient gas absorption, affecting the subsequent efficient combustion of coal powder. In view of this, we propose a coal mill air intake duct structure to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a coal mill air intake pipe structure.

[0005] The technical solution of this utility model is as follows: A coal mill air intake pipe structure includes a gas collecting hood, a hydraulic cylinder, a guide plate, and a baffle. The gas collecting hood is fixed to the upper end of the machine body by screws. The guide plates are rotatably installed inside the gas collecting hood, with symmetrical linear arrays on both sides. The guide plates are installed via a rotating shaft. The lower end of the gas collecting hood is provided with a liftable baffle. A moving block is fixed to the upper end of the baffle. A rotating ring is rotatably installed inside the moving block. A hydraulic cylinder is fixed to one side of the upper end of the gas collecting hood. A temperature sensor is provided at the lower end of the hydraulic cylinder.

[0006] When in use, this device uses a hydraulic cylinder to adjust the position of the temperature sensor inside the machine body. Then, the baffle is placed naturally. When hot air blows through the air-transmitting machine body, the temperature sensor senses the signal and controls the motor at the rear to start. The guide plate on one side of the back of the baffle is in a closed state, and the guide plate on the windward side of the baffle will rotate at a certain angle under the drive of the motor, allowing the gas to enter the gas collection hood along the guide plate and be discharged from the connecting pipe. When the airflow increases, the baffle will move upward, and then the limit key on one side of the rotating ring will be inserted into the limit groove. Before this, the motor needs to drive the guide plate to return to its original position, and then drive one side of the guide plate to rotate. At this time, the central rotating shaft rotates coaxially, and the guide plate on the other side will open under the rotation of the motor, thereby increasing the airflow through the guide plate. Of course, when the airflow decreases, the baffle moves downward, the rotating shaft is disconnected, and one side of the guide plate closes.

[0007] Preferably, a hydraulic rod is inserted into the lower end of the hydraulic cylinder, and the temperature sensor is fixed to the lower end of the hydraulic rod, with the temperature sensor located inside the machine body.

[0008] Preferably, a limit key is inserted into the opposite side of the guide plate, and a limit groove is formed on the surface of the rotating ring, with the limit key matching the limit groove.

[0009] Preferably, a spring is fixed between the rotating ring and the guide plate, and the limiting key and the limiting groove can be stably engaged under the action of the spring.

[0010] Preferably, a linkage is fixed to the inner walls on both sides of the gas collection hood, a motor is fixed to the outer wall of the gas collection hood, the output shaft of the motor is fixedly connected to the output shaft of the linkage, one side of the guide plate is fixedly connected to the rotation center of each roller inside the linkage, and the rollers are connected by an interlaced belt, and a torque rotary device is provided between the rollers and the rotating shaft.

[0011] Preferably, the baffle is designed with a 45-degree inclination, and the inclination baffle can move upward under the action of airflow.

[0012] Preferably, the upper end of the gas collecting hood is provided with a connecting pipe, and a sealing gasket is provided between the connecting pipe and the gas collecting hood. The sealing gasket can be used to achieve the sealing between the gas collecting hood and the connecting pipe.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] I. This utility model can use a temperature sensor to achieve the effect of sensing airflow. When airflow is sensed, a signal can be sent to the back end to control the motor to rotate and drive the guide plate on one side to open.

[0015] Second, based on the first beneficial effect, when the airflow speed increases, the baffle moves upward under force, and the rotating shafts on both sides can rotate coaxially, thereby opening the guide plate on the other side and increasing the airflow transmission speed to adapt to the efficient combustion effect of pulverized coal.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a front view schematic diagram of the present invention;

[0019] Figure 3 This is a top view of the guide plate of this utility model;

[0020] Figure 4 This is a bottom view of the guide vane of this utility model;

[0021] Figure 5 This is a schematic diagram of the rotating ring and the moving block of this utility model;

[0022] Figure 6 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle;

[0023] Figure 7 This is a schematic diagram showing the installation positions of the roller, belt, and torque rotary device of this utility model.

[0024] Figure label:

[0025] 1. Gas collection hood; 2. Body; 3. Motor; 4. Screw; 5. Connecting pipe; 6. Hydraulic cylinder; 7. Sealing gasket; 8. Hydraulic rod; 9. Linkage device; 10. Temperature sensor; 11. Baffle; 12. Guide plate; 13. Moving block; 14. Rotating ring; 15. Limiting groove; 16. Rotating shaft; 17. Spring; 18. Limiting key; 19. Torque rotary device; 20. Roller. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual proportions. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] Please see Figures 1-7As shown, this embodiment is a coal mill air intake pipe structure, including a gas collecting hood 1, a hydraulic cylinder 6, a guide plate 12 and a baffle 11. The gas collecting hood 1 is fixed to the upper end of the machine body 2 by screws 4. The guide plates 12, which are symmetrically arranged in a linear array on both sides, are rotatably installed inside the gas collecting hood 1. The guide plates 12 are installed through a rotating shaft 16. The lower end of the gas collecting hood 1 is provided with a liftable baffle 11. The upper end of the baffle 11 is fixed with a moving block 13. The moving block 13 is rotatably installed with a rotating ring 14 inside. The upper side of the gas collecting hood 1 is fixed with a hydraulic cylinder 6. The lower end of the hydraulic cylinder 6 is provided with a temperature sensor 10.

[0032] When in use, the hydraulic cylinder 6 adjusts the position of the temperature sensor 10 inside the body 2, and then the baffle 11 is placed naturally. When hot air blows through the body 2, the temperature sensor 10 senses the signal and controls the motor 3 at the rear to start. The guide plate 12 on the back side of the baffle 11 is closed. The guide plate 12 on the windward side of the baffle 11 will rotate at a certain angle under the drive of the motor 3, allowing the gas to enter the gas collection hood 1 along the guide plate 12 and be discharged from the connecting pipe 5. When the airflow increases, the baffle 11 will move upward, and then the limit key 18 on the side of the rotating ring 14 will be inserted into the limit groove 15. Before this, the motor 3 needs to drive the guide plate 12 to return to its original position, and then drive the guide plate 12 on one side to rotate. At this time, the rotating shaft 16 in the middle rotates coaxially, and the guide plate 12 on the other side will open under the rotation of the motor 3, thereby increasing the airflow through the guide plate 12. Of course, when the airflow decreases, the baffle 11 moves downward, the rotating shaft 16 is disconnected, and the guide plate 12 on one side closes.

[0033] Example 2

[0034] Please see Figures 1-7 As shown, this embodiment, based on embodiment 1, further includes: a hydraulic rod 8 inserted into the lower end of the hydraulic cylinder 6, a temperature sensor 10 fixed to the lower end of the hydraulic rod 8, the temperature sensor 10 being located inside the machine body 2, and the hydraulic cylinder 6 being able to drive the temperature sensor 10 to the depth inside the machine body 2, facilitating the detection of temperature at different locations.

[0035] Limit keys 18 are inserted into the opposite sides of the guide plate 12, and limit grooves 15 are opened on the surface of the rotating ring 14. The limit keys 18 and the limit grooves 15 are adapted to each other. Through the cooperation of the limit keys 18 and the limit grooves 15, the central rotating shafts 16 on both sides can rotate coaxially.

[0036] A spring 17 is fixed between the rotating ring 14 and the guide plate 12. Under the action of the spring 17, the limit key 18 and the limit groove 15 can be stably engaged. One side of the rotating ring 14 is designed with a slope to facilitate the movement of the moving block 13.

[0037] The inner walls of both sides of the gas collection hood 1 are fixed with a linkage 9, and the outer wall of the gas collection hood 1 is fixed with a motor 3. The output shaft of the motor 3 is fixedly connected to the output shaft of the linkage 9. One side of the guide plate 12 is fixedly connected to the rotation center of each roller 20 inside the linkage 9, and the rollers 20 are connected by an interlaced belt. A torque rotary device 19 is provided between the roller 20 and the rotating shaft 16. The design of the rollers 20 and the belt can realize the effect of multi-axis synchronous torque output by a single shaft input inside the linkage 9. Here, the torque rotary device 19 is provided between the guide plate 12 and the coupling, which can realize the effect of the guide plate 12 returning to the closed gas collection hood 1 when there is no motor 3 driving.

[0038] The baffle 11 is designed to be tilted at a 45-degree angle, and the tilted baffle 11 can move upward under the action of airflow.

[0039] The upper end of the gas collection hood 1 is provided with a connecting pipe 5, and a sealing gasket 7 is provided between the connecting pipe 5 and the gas collection hood 1. The sealing gasket 7 can be used to achieve the sealing between the gas collection hood 1 and the connecting pipe 5.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coal mill ventilation duct structure, comprising a gas collecting hood (1), a hydraulic cylinder (6), a guide plate (12), and a baffle (11), characterized in that: The gas collection hood (1) is fixed to the upper end of the body (2) by screws (4). Inside the gas collection hood (1), there are symmetrical guide plates (12) arranged in a linear array on both sides. The guide plates (12) are installed by a rotating shaft (16). The lower end of the gas collection hood (1) is provided with a liftable baffle (11). The upper end of the baffle (11) is fixed with a moving block (13). The moving block (13) is rotatably installed with a rotating ring (14). A hydraulic cylinder (6) is fixed on one side of the upper end of the gas collection hood (1). The lower end of the hydraulic cylinder (6) is provided with a temperature sensor (10).

2. The structure of a coal mill ventilation duct according to claim 1, characterized in that: The lower end of the hydraulic cylinder (6) is connected to a hydraulic rod (8), and the temperature sensor (10) is fixed to the lower end of the hydraulic rod (8). The temperature sensor (10) is located inside the machine body (2).

3. The structure of a coal mill ventilation duct according to claim 1, characterized in that: The guide plate (12) is connected to a limit key (18) on the opposite side, and the rotating ring (14) has a limit groove (15) on its surface. The limit key (18) is adapted to the limit groove (15).

4. The coal mill air intake duct structure according to claim 3, characterized in that: A spring (17) is fixed between the rotating ring (14) and the guide plate (12).

5. The structure of a coal mill ventilation duct according to claim 1, characterized in that: The inner walls of both sides of the gas collection hood (1) are fixed with a linkage (9), and the outer wall of the gas collection hood (1) is fixed with a motor (3). The output shaft of the motor (3) is fixedly connected to the output shaft of the linkage (9). One side of the guide plate (12) is fixedly connected to the rotation center of each roller (20) inside the linkage (9). The rollers (20) are connected by an interlaced belt. A torque rotary device (19) is provided between the rollers (20) and the rotating shaft (16).

6. The structure of a coal mill ventilation duct according to claim 1, characterized in that: The baffle (11) is designed to be tilted at a 45-degree angle.

7. The structure of a coal mill ventilation duct according to claim 1, characterized in that: The upper end of the gas collection hood (1) is provided with a connecting pipe (5), and a sealing gasket (7) is provided between the connecting pipe (5) and the gas collection hood (1).

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