Mine fan system

FIELD: mining.

SUBSTANCE: system includes operating and stand-by fan units, each of them contains electric motor, rotor, double inlet box with demountable sectors, detachable collector and diffuser. Rotor supports are radial and radial-thrust bearings. Fan of each fan unit of the system is additionally equipped with detachable semi-housing. Rotor radial bearing is located on rotor shaft between electric motor and double inlet box of fan system.

EFFECT: improving reliability, maintainability and reducing cost of repair of main ventilation mine fan systems.

3 dwg

 

The invention relates to the mining industry, namely mining, mine ventilation and ventilyatorostroeniya.

Known mine ventilation installation [RF patent №2252314 from 06.11.2002,, IPC 7 E21F 1/08], including the working and redundant fans, each of which has a diffuser, a motor connected to the fan gear shaft by a toothed coupling, folding doors blocking the entrance, and the device is blocking the fan, dual input box, made in the form of a pair of individual boxes work and back fans by means of their pivot towards each other about a vertical plane passing through the axis of rotation of the fan in such a way that their inner side walls form a common edge that hosts axis Lyady, alternately overlapping nozzles of the input boxes of the working and standby fans.

The disadvantage of this setup is the presence of costly underground channel connecting the input box with ventilation network of the mine, and a long transmission shaft with two gear couplings, which makes it difficult to ensure the alignment of the rotors fans and motors by alignment of three shafts and construction increases the size and cost of the ventilation unit.

Also known ve is Tracinda the [patent RF №2369744 from 27.03.2007,, IPC E21F 1/08], including the working and redundant fans, each of which has a motor, collector and diffuser, dual input box in the form of paired individual boxes of the working and standby fans on a common edge which is placed lyada, alternately overlapping inputs of fans, and a lever door blocking the outlets of the fans, and dual input box is connected with the chassis fans by collectors and contains a removable elements, and collectors are made detachable and are stationary sectors connected with a stationary part of the input box, and a removable sectors, United removable sectors of the input box.

The disadvantage of this setup is the inability to perform all operations on the installation, dismantling and repair of the main elements of the unit and rotors fans.

The objective of the invention is to improve the maintainability of the mine ventilation installation and reducing the cost of its repair.

The task is solved by the fact that in the known device the mine ventilation installation, including operating and standby fan units, each of which contains a motor, the rotor, the supports of which are radial and angular contact bearings, double inlet box with removable sectors, the split number of the sector, having a stationary part connected to the stationary part of the input box, and removable parts, United with removable sectors of the input boxes, and a diffuser according to the invention, each fan unit fan is additionally equipped with a removable Polycarpus and radial bearing of the rotor mounted on the rotor shaft between the motor and dual input box fan installation.

This arrangement of the radial bearing allows movement of the rotor from the housing frame of the fan unit for repair, figure 3. This prevents a full analysis of the installation, reduced time and cost of repair.

The image of the mine ventilation installation schematically shown in the figures.

Figure 1 shows the a-a - a vertical section of the fan Assembly.

Figure 2 shows a horizontal section of the two fan units fan setup with the removed sector dual input boxes for removal of the rotor from the repaired fan.

Figure 3 shows the B-B section of the ventilation unit, and an image displaced rotor ventilation unit from the chassis-frame for repairs.

Where: 1 - the General frame of the fan units; 2 - the body-frame; 3 - motor; 4 - tooth clutch; 5 - radial bearing; 6-dual input box ventilation unit; 7 - removable sector dual input boxes; 8 - rotor; 9 - radial-thrust bearing; 10 - split collector; 11 - removable part of the header; 12 - removable semi-body fan; 13 - rotary folding doors; 14 cone.

Mine ventilation system includes two fan units, work and back, and can operate in normal mode and in reverse.

Each fan unit is installed on the frame 1, has a body-frame 2 and includes a motor 3 connected to the rotor shaft 8 of the fan unit through a toothed clutch 4, the rotor 8, the supports of which are 5 radial and angular contact 9 bearings, split manifold 10, and a diffuser 14, which represents a pyramidal or cone-shaped funnel, drop-down in the direction of movement of the jet during normal ventilation and allows you to smoothly decrease the speed of air movement to reduce the loss of velocity head at the exit of the jet from the fan to the atmosphere. Both the fan unit through the reservoir 10 is connected with a dual inlet box 6, made in the form of paired individual boxes of the working and standby fans and having a removable sectors 7. Removable sectors 7 dual input box 6, removable semi-body 12 of the fan and removable part 11 of the manifold 10 are designed to provide what dubsta Assembly-disassembly of the rotor of the fan units. For switching and reversing fan system using the rotary folding doors 13, alternately overlapping inputs fan units, and lever the door (figures not shown), covering the exits.

Mine ventilation installation works as follows.

Backup fan unit, for example, the left is shown in figure 3, is in position the fan is off from work." When this lever the door and turning lyada 13 dual input box 6 overlap the inlet of the back of the fan unit, isolating it from the ventilation duct and the atmosphere. For reliability disable broken fan on his Parking brake, combined with a toothed clutch 4 (figures details not shown)holding the rotor against rotation under the action of the intake air from the fan is running.

When turning on the fan set to work off his Parking brake, open the lever of the door and folding doors, telling the fan to the atmosphere and ventilation network of the mine (channel setup). The fan is driven by an electric motor 3, providing the necessary pressure (with injection) or vacuum (with suction).

If necessary, commissioning of the back of the fan are R who described her actions.

If necessary, repair or replacement of elements of the unit (motor, the rotor of the fan unit or individual nodes) corresponding fan unit is shown in the position the fan is off from work." Depending on the work performed by lifting mechanisms produce disassembly-Assembly of the motor 3, disassembly-Assembly upper removable Polycarpus 12 fan, removable parts 11 of the reservoir, removable sectors 7 dual input box fan units and (or) of the rotor depending on the volume of work performed, and the rotor may be withdrawn and moved out of the chassis frame 2, for example, as shown in figure 3. Replacing the desired item, design, assemble in reverse order.

The use of the present invention will improve the reliability, maintainability and reduce the cost of repair of the mine ventilation installation.

Mine ventilation installation including operating and standby fan units, each of which contains a motor, the rotor, the supports of which are radial and angular contact bearings, double inlet box with removable sectors, split collector and diffuser, wherein each fan unit installation the fan is additionally equipped with a removable Polycarpus, R is Dalny bearing rotor mounted on the rotor shaft between the motor and dual input box fan installation.



 

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