Shaft ventilator plant

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, each of which has diffuser with rotary branch pipe, electric engine, connected to ventilator by transmission shaft via toothed sleeves, and devices, covering input and output of ventilator. Additionally plant is provided with doubled input box, made in form of mated individual boxes of working and reserve ventilators by rotating these to face each other relatively to vertical planes, passing through axes of ventilators rotation. Side inner walls of ventilators form up a common rib, on which axis of special piece is placed, in turns covering branch pipes of input boxes of working and reserve ventilators. When using ventilator plant near residential or administration buildings its output box is provided by muffler and cowl, and output branch pipes of ventilators are provided with controlling blades.

EFFECT: lower costs, higher durability.

2 cl, 4 dwg

 

The invention relates to mining and can be used in systems of the main airing mines.

Known mine ventilation unit (patent No. 2064589 from g. under the application №5063175 from 01.10.92 g)containing the working and redundant fans, motors, drivers and devices switching working fans on back.

The disadvantage of this setup is the complexity of its devices switch operating fans on the back that contain movable seal, the lifting mechanism of the transmission shaft and the flexible gate with chain drives and inefficient output part, which can be high energy losses.

Closest to the technical nature of the claimed is fan (patent No. 2163668 on application No. 98113269/03 from 03.07.1998)containing the working and redundant fans, each of which has a diffuser, a motor connected continuously with the fan through the gear shaft with gear couplings and devices overlying the inlet and outlet of the fan housing made in the form of the folding doors or sliding doors.

The disadvantage of this setup is the inability to use the horizontal axes of their fan units and the placement of the motors from collect the s-fairing fans.

The present invention is to reduce the cost, improve reliability and maintainability installations with horizontal arrangement of the axes of the fan units and the prevention of the freezing of the broken fan at low temperatures of atmospheric air by double-clipping from the flow of the installation.

The problem is solved in that the fan setting, including working and redundant fans, each of which has a motor connected to the fan gear shaft through gear couplings, and cone, according to the invention is equipped with a dual inlet box, made in the form of a pair of individual input boxes work and back fans by allowing them to pivot relative to the vertical planes passing through the axes of the fans towards each other so that their inner side walls form a common edge, hosts the axis of Lyady, alternately overlapping nozzles of the input boxes of the working and standby fans.

To enhance the maintainability of installation by improving access to the impeller fan and facilitate replacement of the transmission shaft with a toothed coupling the upper portions of the input boxes of the fans is movable, while lebeck the rope-driven Lyady input box is located at the top between the molded parts of the input boxes of the fans, and blocks the cable actuator placed inside the input boxes on their outer side walls so that when the disable input boxes broken fan drive cable Lyady posted below and does not interfere with the removal of its transmission shaft.

In the case of installation near residential buildings or office buildings for noise reduction and the upper part of the output of the box is filled with items reduce noise.

Figure 1 shows a vertical section of the building deventilation installation. Figure 2 its horizontal section. Figure 3 shows the cross section of the input boxes along a-A. figure 4 shows the cross section of the channel after the diffuser, which is provided with a lever by the door and guide vanes.

Fan (1, 2, 3 and 4) contains two horizontal axis (operating and standby) fan 1, each of which has a motor 2, a transmission shaft 3 with gear couplings 4 and the diffuser 5 and the output tubes 6, are equipped with guide vanes 7, paired with a lever door 8, is equipped with a winch (1, 2, and 4), and output box containing the fairing 9 and the muffler 10 and the input box 11 made in the form of a pair of individual input boxes work and back fans, (3)with lagoi 12 winch 13 and the upper side portion 14 of the input corob the fans are removable. To connect with shaft fan has a channel 15 that is attached to the input box 11 fans through the folding doors 12 that is moved by means of the winch 13 (figures 1, 2 and 3).

Fan works as follows.

Back fan is in position, the fan is off from work." When this lever the door 8 of the outlet pipe 6 and lyada 12 input box 11 broken fan closed and block the inlet and outlet holes of the fan 1, isolating it from the ventilation duct and the atmosphere. For reliability disable broken fan on his Parking brake (not shown)that is holding the rotor against rotation under the action of the intake air from the fan is running.

When you turn on the fan to work off his Parking brake, open the lever of the door 8 and lyada 12, telling the fan to the atmosphere and the ventilation channel.

When switching on the electric motor 2 through the transmission shaft 3 is driven into rotation of the fan rotor 1, providing the necessary vacuum, through which creates a flow of air from the mine. To improve the aerodynamic performance of the installation is the cone 5 and the fairing 9. To reduce energy loss (pressure) at the outlet of the outlet pipe 6 by straightened the I flow in the direction of the axis of the channel set guide vanes 7 and the fairing 9 (1, 2 and 4).

If necessary, commissioning of the back of the fan are made of the previously described action.

If necessary, replace installation components (fan 1, the motor 2 or the transmission shaft (3) suitable blower output to position the fan is off from work, you unhook the claw couplings 4, disassemble the removable part of its input box, released and removed from the lifting mechanisms (not shown) of the transmission shaft 3. Replacing the desired item, design, assemble in reverse order.

The reversal mode of the fan installation is performed by changing the direction of rotation of the rotor of the fan is running, or the simultaneous reversal of the blades of the impeller.

The exploitation of patented inventions will improve the reliability, maintainability and to reduce the cost of fan installations with horizontal axial fans, as well as to increase their efficiency and acoustic characteristics.

1. Mine ventilation installation, 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, characterized in that it is equipped with the 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, hosts the axis of Lyady, alternately overlapping nozzles of the input boxes of the working and standby fans.

2. The fan installation according to claim 1, characterized in that the output pipe of the fan is equipped with guide vanes and the outlet box installation is equipped with a Radome and a silencer.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, placed in ventilator chamber. By means of connecting channels ventilators are connected to air-conducting and air-draining channels, which com together in triple-output branch pipes, connected via ventilation channels to general mine ventilation network. Ventilation chamber is separated from air-conducting channels by longitudinal vertical wall. Air-conducting channels are made in form of one mine, separated by longitudinal horizontal wall between triple branch-pipes. Means for reversing air flow are mounted in branch pipes. In connection channels on force or suck-in side of ventilators cutting means are mounted. Assembling drift is connected to end of ventilator chamber.

EFFECT: higher safety, lower costs.

3 dwg

FIELD: mining industry.

SUBSTANCE: method includes use of screw-drilling machine for driving of several first ventilation shafts in ore body and driving several second shafts, while second and each second shaft crosses, at least, one matching first shaft, forming first support walls, supporting ceiling. First supporting ceilings consist of ore body zones between neighboring second shafts, each first support wall has portion of at least one first shaft, passing horizontally through it. Horizontal channels are formed, each of which is placed transversely to matching second shaft between appropriate portions of first shaft, formed in adjacent support walls, for forming of group of continuous ventilation shafts. Second shafts are filled for forming second supporting walls, supporting well ceiling, and first supporting walls are extracted. First ventilation shafts can be made parallel to each other. Second shafts may be directed perpendicularly relatively to first ventilation shafts. In ore body air-outlet and air-inlet ventilation mines can be formed, placed at distance from each other along horizontal line, while first or each first ventilation shaft passes through portion of ore body between air-inlet and air-outlet ventilation mines. Driving of second or each second shaft can be performed by cutting machine, or by drilling or explosive mining.

EFFECT: higher efficiency.

7 cl, 11 dwg

FIELD: mining industry.

SUBSTANCE: pipeline has sections made in form of hermetically interconnected outer and inner covers, mounted with space relatively to each other, and main ventilator. On different ends of pipeline flow meter and additional ventilator are mounted, the latter having adjustable characteristics and being connected to inter-pipe space by branch pipe. In inner cover apertures are made placed along radius and along length of cover. Air comes from apertures to air channel and forms additional air flow near walls of inner cover, which lowers or heightens aerodynamic resistance of ventilation pipeline.

EFFECT: higher efficiency, higher safety, lesser costs.

2 dwg

The invention relates to the mining industry and can be used in systems of ventilation of mines

The invention relates to the mining industry and can be used in the construction of mining enterprises and engineering structures, including in areas of permafrost

The invention relates to the mining industry and can be used for ventilation of mines

The invention relates to mining, in particular for ventilation of mine workings

The invention relates to mining and can be used in the preparation of the mining fields

The invention relates to mining and can be used in chamber-and-pillar system, the development of gas-bearing coal seams gentle fall

The invention relates to the mining industry and can be used for airing a dead-end cavities during auger excavation of coal

FIELD: mining industry.

SUBSTANCE: pipeline has sections made in form of hermetically interconnected outer and inner covers, mounted with space relatively to each other, and main ventilator. On different ends of pipeline flow meter and additional ventilator are mounted, the latter having adjustable characteristics and being connected to inter-pipe space by branch pipe. In inner cover apertures are made placed along radius and along length of cover. Air comes from apertures to air channel and forms additional air flow near walls of inner cover, which lowers or heightens aerodynamic resistance of ventilation pipeline.

EFFECT: higher efficiency, higher safety, lesser costs.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes use of screw-drilling machine for driving of several first ventilation shafts in ore body and driving several second shafts, while second and each second shaft crosses, at least, one matching first shaft, forming first support walls, supporting ceiling. First supporting ceilings consist of ore body zones between neighboring second shafts, each first support wall has portion of at least one first shaft, passing horizontally through it. Horizontal channels are formed, each of which is placed transversely to matching second shaft between appropriate portions of first shaft, formed in adjacent support walls, for forming of group of continuous ventilation shafts. Second shafts are filled for forming second supporting walls, supporting well ceiling, and first supporting walls are extracted. First ventilation shafts can be made parallel to each other. Second shafts may be directed perpendicularly relatively to first ventilation shafts. In ore body air-outlet and air-inlet ventilation mines can be formed, placed at distance from each other along horizontal line, while first or each first ventilation shaft passes through portion of ore body between air-inlet and air-outlet ventilation mines. Driving of second or each second shaft can be performed by cutting machine, or by drilling or explosive mining.

EFFECT: higher efficiency.

7 cl, 11 dwg

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, placed in ventilator chamber. By means of connecting channels ventilators are connected to air-conducting and air-draining channels, which com together in triple-output branch pipes, connected via ventilation channels to general mine ventilation network. Ventilation chamber is separated from air-conducting channels by longitudinal vertical wall. Air-conducting channels are made in form of one mine, separated by longitudinal horizontal wall between triple branch-pipes. Means for reversing air flow are mounted in branch pipes. In connection channels on force or suck-in side of ventilators cutting means are mounted. Assembling drift is connected to end of ventilator chamber.

EFFECT: higher safety, lower costs.

3 dwg

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, each of which has diffuser with rotary branch pipe, electric engine, connected to ventilator by transmission shaft via toothed sleeves, and devices, covering input and output of ventilator. Additionally plant is provided with doubled input box, made in form of mated individual boxes of working and reserve ventilators by rotating these to face each other relatively to vertical planes, passing through axes of ventilators rotation. Side inner walls of ventilators form up a common rib, on which axis of special piece is placed, in turns covering branch pipes of input boxes of working and reserve ventilators. When using ventilator plant near residential or administration buildings its output box is provided by muffler and cowl, and output branch pipes of ventilators are provided with controlling blades.

EFFECT: lower costs, higher durability.

2 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: method includes feeding fresh air along air ducts due to generic depression, and output stream is taken partially through supported mines due to generic depression and partially - through extracted space of extracted or previously extracted column by means of gas-sucking plant. Methane support control in fresh and output streams is maintained. From the surface into air duct a ventilation shaft is drilled and additional fresh air is fed therein in same direction with main stream. Adjustment of methane containment in air streams at extraction portion is performed by changing amount of air, fed additionally.

EFFECT: increased volume of fed fresh air without substantial reconstruction of ventilation system.

1 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: device has air feeding channels, positioned between support and coal massif and ventilator with pipe for sucking air away. Additionally device is provided with curtain of transparent plastic profiles with load, positioned in lower portion of curtain, positioned on carrying ropes, connected to driving drum. The latter is held on ceiling of support section and provided with electric drive with automatic and manual control. Lower portion of curtain enters a space, formed by walling of cable packer and grating. Ventilator, moved with extraction of coal massif, is positioned in ascending air stream in ventilation drift. Width of curtain equals width of support section, and length is in 1.3 times greater than vertical height of support.

EFFECT: higher efficiency.

4 dwg

FIELD: mining industry.

SUBSTANCE: device has air-intake channels and ventilator with air sucking pipe. Each air-intake channel is made in form of flexible plastic pipe with gate, placed on lower side of ceiling of support section or in ceiling body in parallel to its longitudinal axis. One end of air-intake channel is positioned at same level with working end of ceiling, and second one is connected to air sucking pipe, held below support section ceiling behind combine in parallel to axis of scrapping conveyer. Ventilator is mounted on mating support on out-flowing air stream. Flexible plastic pipes are made having U-like shape with crosspiece perforated along length, positioned along working edge of support section ceiling. Also, air-intake channel is provided with subs, each of which is made of two intertwined parts, mounted on rotation axis, separated by air-impenetrable insert. Subs and ceiling are interconnected with possible rotation of subs relatively to ceiling, and axis of subs is displaced relatively to axis of joint of support section ceiling and is parallel to it.

EFFECT: higher personnel safety, higher efficiency.

4 dwg

FIELD: mining industry, particularly ventilation of mines or tunnels during bauxite deposit development.

SUBSTANCE: method involves supplying pure air from field haulage roadway through blind drift of transport horizon into ore rising one due to mine depression; feeding part of air from rising horizon in intermediate blind drift; directing remaining pure air in layered air supply drift and then to entry ways for venting thereof; removing contaminated air through previously developed entry ways in layered venting drifts arranged in exhausted space at deposit ground along the strike; directing contaminated air through venting rises arranged in exhausted space along block boundaries at deposit ground to field venting drift drilled under deposit ground along the strike at venting horizon level and blind drift of venting horizon to field venting drift; supplying pure air from intermediate blind drift to field rise and then to field venting drift through blind drift of venting horizon. Intermediate blind drift and field rise are adapted to evacuate miners in emergency conditions.

EFFECT: increased efficiency and miner's safety due to changing pure and contaminated air mass flow within the boundaries of the block.

3 dwg

FIELD: mining industry, particularly to form venting system, which controls thermal mine conditions during combined mining.

SUBSTANCE: method involves forming overburden haulage inclined out of the pit extending across the strike up to interface between exposed and underground mines; extracting mineral from the haulage; constructing venting means and mounting support in approach mine; erecting heat-exchanging mines during opened mining.

EFFECT: elimination of time intervals during venting system construction and mining performing, simplified people evacuation in emergency and possibility to use heat-exchanging mines for other purposes.

2 dwg

FIELD: mining, particularly to vent ore and rock mines.

SUBSTANCE: method involves mixing fresh and exhaust air by blasting fuel mixture; forming suction jet, which discharges exhaust air outside the mine. Fuel mixture components are supplied by compressed nitrogen. Air mixing is performed with the use of mixture including sodium permanganate and hydrogen peroxide taken in ratio of 1:(3-10). The suction jet is formed by exhaust air ejection. Venting plant is arranged at bottom mine level. Device comprises body with nozzle arranged over fuel mixture and control panel. The device additionally has nitrogen, sodium permanganate and hydrogen peroxide vessels. Venting pipeline is secured to body nozzle. The venting pipeline is provided with jets to supply hydrogen peroxide and sodium permanganate connected with compressed nitrogen cylinder through control panel. The venting pipeline is composed of separate sections put one on another and provided with conical flares. The flares and adjacent sections define annular air suction slots.

EFFECT: provision of independent operation, simplified structure, increased operational safety and reduced power inputs for mine venting.

1 cl, 1 tbl, 2 cl

Up!