Automatic adjusting air locking device for slag outlet of vertical coal mill

Abstract

The utility model relates to an automatic adjusting air locking device for a slag outlet of a vertical coal mill, which comprises a turning plate rotatably arranged at the slag outlet, the upper end of the turning plate is fixedly mounted on a rotating shaft, a mounting rack is arranged at the slag outlet, the rotating shaft is rotatably mounted on the mounting rack through a bearing, and the rotating shaft is fixedly mounted on the rotating shaft. And the end part of the rotating shaft penetrates through the mounting frame and is connected with the counterweight unit. The thrust of the balancing weight to a plate abuts against the suction force of the fan to the plate, when slag powder at the slag discharging opening is discharged, the slag powder slides downwards under the gravity of the slag powder to generate thrust to the turning plate, so that the slag powder is conveniently discharged, when the slag powder is much, the thrust to the turning plate is also large, the slag discharging flow is large at the moment, and when the slag powder is small, the slag powder can be conveniently discharged. And the thrust on the turning plate is small, the deslagging flow is small at the moment, the automatic adjusting effect is achieved, other intelligent equipment investment is not needed, cost is reduced, the structure is simple, and meanwhile the automation degree is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal vertical mills, and particularly relates to an automatic regulating and air-locking device for the slag outlet of a coal vertical mill. Background Art

[0002] A coal vertical mill is a large-scale grinding equipment, which is widely used in industries such as cement, electric power, metallurgy, chemical industry, and non-metallic minerals. It integrates crushing, drying, grinding, classification, and conveying, with high production efficiency, and can grind lump, granular, and powdery raw materials into the required powdery materials. The current slag discharge process of the coal vertical mill is that the slag generated by the equipment is first stored in the slag discharge pipe, and the staff needs to check the slag discharge pipe regularly. When the slag discharge pipe is full, it is manually discharged. This method requires the staff to check regularly, wasting manpower and reducing work efficiency. Moreover, the switch of the traditional slag discharge pipe opening needs to be manually closed and opened, which also greatly increases the labor intensity of workers. Therefore, it is necessary to make improvements. Content of the Utility Model

[0003] (I) Purpose of the Utility Model

[0004] In order to overcome the above deficiencies, the purpose of the utility model is to provide an automatic regulating and air-locking device for the slag outlet of a coal vertical mill to solve the above technical problems.

[0005] (II) Technical Solution

[0006] To achieve the above purpose, the technical solution provided by this application is as follows:

[0007] An automatic regulating and air-locking device for the slag outlet of a coal vertical mill includes a flap rotatably arranged at the slag outlet. The upper end of the flap is fixedly installed on a rotating shaft. An installation frame is arranged at the slag outlet. The rotating shaft is rotatably installed on the installation frame through a bearing. The end of the rotating shaft passes through the installation frame and is connected to a counterweight unit.

[0008] Preferably, the counterweight unit includes a connecting rod connected to the rotating shaft. A fixed counterweight block is arranged on the connecting rod. The bottom of the fixed counterweight block on the connecting rod is a connecting end. The outer wall of the connecting end is provided with connecting threads. The connecting end is connected to a locking nut. A movable counterweight block is sleeved on the connecting rod. The movable counterweight block is located between the fixed counterweight block and the locking nut.

[0009] Preferably, an included angle is provided between the connecting rod of the counterweight unit and the flap, and the included angle is between 20° and 90°.

[0010] Preferably, the area of the flap is larger than the area of the slag outlet.

[0011] Preferably, a door handle is arranged on the flap.

[0012] Preferably, a slag discharge extension plate is provided at the slag discharge port, and the slag discharge extension plate corresponds to the slag transport vehicle.

[0013] Beneficial effects:

[0014] In the utility model, the thrust of the counterweight block on the plate is offset by the suction of the fan on the plate. When the slag powder at the slag discharge port is discharged, the gravity of the slag powder itself sliding down generates a thrust on the flap, thereby facilitating the discharge of the slag powder. When there is more slag powder, the thrust on the flap is also greater, and the slag discharge flow rate is large at this time. When the slag powder is less, the thrust on the flap is smaller, and the slag discharge flow rate is smaller at this time, achieving the effect of automatic adjustment. There is no need to invest in other intelligent devices, reducing costs, with a relatively simple structure and high automation. Description of the drawings

[0015] Figure 1 is a schematic view of the internal side structure of the utility model;

[0016] Figure 2 is a front view structure diagram according to an embodiment of the utility model. Specific implementation manners

[0017] To make the purpose, technical solutions and advantages of the utility model clearer, the following combines specific implementation manners and refers to the attached Figure 1-2 , and further details the utility model. It should be understood that these descriptions are only exemplary and do not limit the scope of the utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the utility model.

[0018] A slag discharge automatic adjustment and air lock device for a coal vertical mill provided by the utility model includes a flap 11 rotatably arranged at the slag discharge port of the coal vertical mill 1. A door handle 9 is provided on the flap 11 to facilitate lifting or lowering the flap 11. The area of the flap 11 is larger than the area of the slag discharge port 6. When there is no slag to be discharged, the suction generated by the fan of the coal vertical mill causes the flap to completely close the slag discharge port. The upper end of the flap 11 is fixedly installed on a rotating shaft 14. An installation frame 13 is provided at the slag discharge port 6. The rotating shaft 14 is rotatably installed on the installation frame 13 through a bearing 12, reducing the wear of the rotating shaft 14 and extending the service life of the rotating shaft. The end of the rotating shaft 14 passes through the installation frame 13 and is connected to a counterweight unit.

[0019] The counterweight unit includes a connecting rod 2 connected to the rotating shaft 14. A fixed counterweight block 5 is provided on the connecting rod 2. The bottom of the fixed counterweight block 5 on the connecting rod 2 is the connecting end. The outer wall of the connecting end is provided with connecting threads, and the connecting end is connected to a locking nut 4. A movable counterweight block 3 is sleeved on the connecting rod 3, and the movable counterweight block 3 is located between the fixed counterweight block 5 and the locking nut 4. An included angle is provided between the connecting rod 2 of the counterweight unit and the flap 11, and the included angle is between 20° and 90°. Through the setting of the movable counterweight block, the pulling force of the counterweight unit on the flap can be adjusted, so as to balance the wind force generated by the coal vertical mill fan, facilitating the discharge of slag.

[0020] A slag discharge extension plate 8 is provided at the slag discharge port. The slag discharge extension plate 8 corresponds to the slag transport vehicle 7, facilitating the transfer of slag.

[0021] In the present utility model, the pushing force of the counterweight block on the plate and the suction force of the fan on the plate cancel each other out. When the slag powder at the slag discharge port is discharged, the gravity of the slag powder itself sliding down generates a pushing force on the flap, thus facilitating the discharge of the slag powder. When there is more slag powder, the pushing force on the flap is also greater, and the slag discharge flow rate is large at this time. When the slag powder is less, the pushing force on the flap is smaller, and the slag discharge flow rate is smaller at this time, achieving the effect of automatic adjustment. There is no need to invest in other intelligent devices, reducing the cost. The structure is relatively simple, and at the same time, the degree of automation is high.

[0022] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. An automatic air lock device for a coal vertical mill slag outlet, characterized in that: It includes a flap rotatably arranged at the slag outlet, the upper end of the flap is fixedly mounted on a rotating shaft, a mounting frame is provided at the slag outlet, the rotating shaft is rotatably mounted on the mounting frame through a bearing, and the end of the rotating shaft passes through the mounting frame and is connected to a counterweight unit.

2. The automatic air lock device for adjusting the slag outlet of a coal vertical mill according to claim 1 is characterized in that: The counterweight unit includes a connecting rod connected to a rotating shaft, a fixed counterweight block is arranged on the connecting rod, the bottom of the fixed counterweight block on the connecting rod is a connecting end, a connecting thread is arranged on the outer wall of the connecting end, the connecting end is connected to a locking nut, a movable counterweight block is sleeved on the connecting rod, and the movable counterweight block is located between the fixed counterweight block and the locking nut.

3. The automatic air-locking device for adjusting the slag outlet of a coal vertical mill according to claim 2 is characterized in that: An included angle is arranged between the connecting rod of the counterweight unit and the flap, and the included angle is between 20° and 90°.

4. The automatic air lock device for adjusting the slag outlet of a coal vertical mill according to claim 1 is characterized in that: The area of ​​the flap is larger than the area of ​​the slag outlet.

5. The automatic air lock device for adjusting the slag outlet of a coal vertical mill according to claim 1 is characterized in that: A door handle is arranged on the flap.

6. The automatic regulating air lock device for the slag outlet of a coal vertical mill according to claim 1 is characterized in that: A slag discharge extension plate is provided at the slag discharge port, and the slag discharge extension plate corresponds to the slag transport vehicle.

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