Fan of the main airing
The invention relates to the mining industry and can be used for ventilation of mines. The technical result of the invention is the compactness of the set up, free access to individual fans and ensuring the use of the fan installed in the suction and discharge performance without additional structural changes. For this installation contains multiple (more than two) centrifugal fans located on both sides of installed under each other injection and suction channels connected with the diagonally arranged holes in a square wall vertical reverse carton, with double lagoi on the horizontal axis. Holes connecting the mine and the atmosphere with reversing box, formed in the surfaces diagonally opposite amounts reversible boxes respectively at the opening of the inlet of the upper channel and over the hole in the bottom of the channel. 2 C.p. f-crystals, 6 ill.The invention relates to the mining industry and can be used for ventilation of mines.Known mine ventilation installation, working with the x can be used as reversible and non-reversible axial fans, and non-reversible centrifugal fans.The most powerful efficiency of the fan units is achieved by ventilation of mines operating at full capacity.The construction of the main fan installations ventilation, requiring large capital expenditures before the start of mines economically impractical.The trend of using multiple (one or more) business fans with one back fan, and the commissioning of additional fans shall be in accordance with the extension to the mine workings. In addition, the presence in the work (and reserve) several fans increases the efficiency and reliability of the fan units.Known mine ventilation installation (see SU 682654, IPC 7 E 21 F 1/08, 30.08.1979) with multiple centrifugal fans mounted on a swivel sites that are hosted on a common platform. Translation reserve the fan work is carried out by moving the platform over vostokovedenie channels using a complex gear mechanism.A disadvantage of the known installation: the complexity of the design. Closest to the invention is ventilate and discharge channels with a shared area, which has double leaf folding doors on the vertical axis, and the working and redundant fans are located between the channels and connected with them by the nipples with folding doors on the horizontal axis.The disadvantages of the prototype should include: - a large area occupied by the fan installation, which is especially important in crowded conditions okolozemnogo and unloading of the court:- difficult access (especially in winter) to the first fan;- failure to install air preheaters above suction diffuser in the case of injection ventilation unit because of the location over the General area of the channels drive double folding doors.The aim of the invention is the compactness of the set up, free access to individual fans, the use of a fan system in any performance (suction or discharge) without additional structural changes.In the invention, representing a ventilation unit of the main airing with centrifugal fans connected by pipes with parallel injection and suction channels with a shared area with double lagoi connected with mine and atmosphere, the total land untilnow axis, channels of nozzles are arranged one above the other and connected with the diagonally arranged holes in a square the side surface of the reverse of the box, with holes in the reverse box for messages with mine and atmosphere are placed in the surfaces diagonally arranged volumes reversible boxes respectively under the entrance hole of the upper channel and over the hole in the bottom of the channel. The orifices in the reverse box for messages with the charge and the atmosphere are in the horizontal surfaces of the reversing box. When made (offset) heaters for heating air in the discharge of the fan installation hole in reversing box for messages with mine and atmosphere can be located in its side surface with an input hole injection and suction channels.The invention is illustrated in the drawing, where Fig.1, 2 shows the discharge fan with heater on reverse box, side view and top; Fig.3 shows the discharge fan made by truck; Fig.4 shows the suction fan with diffuser above the horizontal surface reversioning fans 1 and 2, connected by branch pipes 3, 4 and 5, 6 to the discharge channel 7 or 8 and the suction channel 9 and 10. With the overall plot, which is made in the form of a rectangular vertical reverse of the box 11 with double lagoi 12 on the horizontal axis. Channels of nozzles are arranged one above the other and connected with diagonally spaced holes 13 and 14 in a square the side surface of the box 11, which is connected with the mine and the atmosphere through the openings 15 and 16 and holes 17 and 18 in the surface diagonally arranged volumes reversible boxes are located respectively below the hole 13 and above the openings 14.The diffuser 19 suction fan system can be installed over the reverse box. When the injection performance of the ventilation unit reversing box 11 may be connected to the atmosphere through the heater 20 or pronounced heater 21.When working pressure ventilation unit (Fig.1 and Fig.3) the air from the atmosphere is absorbed in reversible box 11 through the heater 20 and the opening 16 or through the heater 21 and the hole 18. When the vertical position of the bivalve Lyady 12 air through the hole 14 is sucked into the channel 9 and the nozzles 4 three of the four centrifugal veins is lately channel 7 and the hole 13 is fed again in the reverse box 11, and from it through the hole 15 or 17 in the shaft.The reversal of the air flow is carried out without stopping the fan installing folding folding door 12 in a horizontal position in which the lower suction duct 9 through the opening 14 and the opening 15 and 17 connected to the shaft, and the upper discharge channel 7 through the hole 13 and the hole 16 and heater 20 (Fig.1) or through the hole 18 and heater 21 (Fig.3) communicates with the atmosphere.When operating the suction fan installation main ventilation (Fig.4) air is sucked in from the mines in the reverse box 11 through the opening 15 and vertical position folding folding doors 12 through the opening 13 enters the upper suction channel 10, and then through the nozzles 6 in three working fan 2, of which under pressure through the nozzles 5 and the lower discharge channel 8 is fed in the reverse box 11 through the opening 14 and out of the box 11 through the opening 16 in the diffuser 19.When reversing suction fan installation bivalve lyada 12 is installed in a horizontal position.At the top of the suction channel 10 through the opening 13, the hole 16 and the diffuser 19 is communicated with the atmosphere, and the lower discharge channel 8 through the space in the cramped conditions of the mine yard defines the advantages of ventilation unit of the main airing.
Claims1. Fan of the main airing with centrifugal fans connected by pipes with parallel suction and discharge channels with a shared area with double lagoi connected with mine and atmosphere, characterized in that the total area is made in the form of a vertical rectangular boxes with reversible double lagoi on the horizontal axis, the channels of the nozzles are arranged one above the other and connected with the diagonally arranged holes in a square the side surface of the reverse of the box, with holes in the reverse box for messages with mine and atmosphere are placed in the surfaces diagonally arranged volumes reversible boxes respectively under the entrance hole of the upper channel and over the hole in the bottom of the channel.2. The fan installation according to p. 1, characterized in that the holes in the reverse box for messages with mine and atmosphere are located in the horizontal surfaces of the reversing box.3. The fan installation according to p. 1, characterized in that the holes in the reverse box for messages with mine and atmosphere are located in its side surface, opposite b is
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.
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.
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.
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.
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.
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.
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