Installation of dry dust collection
(57) Abstract:Usage: mining, machine tools for drilling wells. The inventive installation comprises a dust collector, the output of which through a cyclone connected to the suction inlet of the fan, fabric filter, regulator air flow. In the upper part of the dust collector is installed jet separator, and under the last - slotted divider flow. The latter is in the form of a grid of vertically mounted with clearance relative to each other over. The entrance of a fabric filter and jet separator is connected to control the air flow to the discharge outlet of the fan. 4 Il. The invention relates to the mining industry, namely the setting of dry dust suppression on drilling rigs for drilling blast holes in open-cast mining.Known installation of dry dust collection, including the mouth pulariani with a discharge pipe is connected to a flexible coal pipe, cyclone, dust collector with filter fabric, fan and air ducts  a Disadvantage of the known installation is the low efficiency of dust collection due to lack of funds, can not influence, obmennyi pipe connected with the inlet of the dust collector, the output of which through the cyclone in communication with the suction inlet of the fan connected to its discharge pipe with an airflow switch, and fabric filter (2). A disadvantage of the known device is the low efficiency of the dust during the drilling of rocks of different strength.The purpose of the invention increase the efficiency of the facility during the drilling of rocks of different strength by reducing the dust load on the fabric filter and improve air purification from dust.This is achieved by the fact that the unit is supplied installed in the upper part of the dust collector jet separator and blower flow divider positioned below the jet separator and in communication with the connected pipe pilipienka, with slotted divider made in the form of a grid of vertically installed with a gap relative to each other in corners, and edges of adjacent corners in opposite directions, and the entrance of a fabric filter and jet separator is connected to control the air flow to the discharge outlet of the fan.In Fig.1 presents a schematic diagram ustanovka dry dust collection includes pulariani 1, reported connected by pipe 2 to the input 3 of the dust collector 4, input 5 through which the cyclone 6 is in communication with the suction inlet 7 fan 8 that is connected to its discharge pipe 9 with the regulator 10 air flow, and fabric filter 11.The unit is supplied installed in the upper part 12 of the dust collector 4 jet separator 13 and slot flow divider 14, placed under the jet separator 13 and is in communication with the connected pipe 2 pilipienka 1. The entrance of a fabric filter 11 and the jet separator 13 is connected to control the air flow 10 to the discharge pipe 9 of the fan 8.Fabric filter 11 is made with the dust collector 15 and a mechanism 16 for shaking the filter. Jet separator has a hole 17 for feeding upstream. Slotted divider 14 is in the form of a lattice of vertical mounted with clearance relative to each other over 18 and ribs 19 of the adjacent corners 18 are directed in opposite directions.The device operates as follows. Dust-air mixture from the wells 20 enters pulariani 1 by means of the pneumatic system 21 of the machine. Fan 8 creates FilePlanet 1 discharge, which going on Neulevel 4 is divided into jet slot divider 14. When the movement of coarse particles lose their original speed, and with a jet separator 13 creates a veil of fine upward flow. When this occurs, the interaction of high-speed flow of purified air-dust mixture flowing out of the holes 17 of the jet separator 13, and out of the slot divider 14 flows untreated air-dust mixtures.In the interaction of divergent streams provides damping of the velocity of dusty particles, resulting in their coagulation, the intensity of which increases due to the fact that the dispersion of particles in interacting threads are different. In the dust collector 4 is the deposition of dust in the dust collector 22, and the finest part of the air-dust mixture is sucked into the cyclone 6, where a further separation.From the cyclone dust-air mixture then enters the fan 8, at the entrance of which the pressurized stream is divided by the regulator 10 of the flow into two streams, one of which is fed to the input of a fabric filter 11, and the other on the jet separator 13 to create an air jet of the veil.In the initial period, when bandwidth is capable of being the focus of only a smaller part of the exhaust flow in the jet separator 13. As it is filled with dust device filters of thin clearing and increases its drag, the controller 10 of the thread set up so that a large part of the flow in the jet separator 13, to increase the efficiency of the device, thereby reducing the load on the filter.Upon completion of the drilling cycle perform the shaking of a fabric filter mechanism 16, and then install again ready for operation.Thus, the proposed device allows you to significantly improve efficiency in the drilling of rocks of different strength by reducing the dust load on the fabric filter and improve air cleaning from dust. INSTALLATION of DRY DUST collection, including pulariani reported pipe connected with the inlet of the dust collector, the output of which through the cyclone in communication with the suction inlet of the fan connected to its discharge pipe with an airflow switch, and fabric filter, characterized in that, with the aim of improving efficiency in the operation of the unit during the drilling of rocks of different strength by reducing the dust load on the fabric filter and improve ochodaeidae thread posted under jet separator and in communication with the connected pipe pilipienka, with slotted divider made in the form of a grid of vertically installed with a gap relative to each other in corners, and edges of adjacent corners in opposite directions, and the entrance of a fabric filter and jet separator is connected to control the air flow to the discharge outlet of the fan.
FIELD: mining industry; methods and devices for localization of explosion of methane-and-air mixture and coal duct.
SUBSTANCE: proposed device includes bin filled with flame suppressing powder and provided with filling neck which is closed with cover and easily breakable diaphragm at its outlet. Device has pneumatic cartridge coaxially located in perforated intermediate chamber which is coaxially located in its turn in bin; it is cone-shaped or cylindrical in form. One end of intermediate chamber is rigidly secured on inner end wall bin and other end is rigidly secured at bin outlet in spryer made in form of swirler. Pneumatic cartridge has several working chambers connected with exhaust holes, actuating mechanism with spherical movable supports engageable with spring-loaded stepped piston which is located in main working chamber closing its holes; subsequent exhaust holes of working chambers are closed by spring-loaded slide valves having bypass passages of equal section which are located in working chambers dividing them; cartridge has front chamber between its housing and sliding sleeve containing gas-forming chemical agent. According to another version, device has two base modules which are connected by mirror image; each module has pneumatic cartridge and perforated intermediate chamber.
EFFECT: enhanced efficiency.
20 cl, 15 dwg
FIELD: mining industry.
SUBSTANCE: method includes solution of crystals of samples in salts solution and separation of volume of gas in measuring tank, isolated from atmospheric air. Salt samples are crushed mechanically directly in salts solution. From measuring tank gas sample is extracted to determine its composition.
EFFECT: higher precision.
FIELD: mining industry.
SUBSTANCE: heat waves suppression device consists of mine channel with well sections made therein. Each well of section is provided with conic aperture at entry into rock, and at end of well - by chambers for destroyed rock, remote from each other and from longitudinal channel axis. Each section of channel wells is made with saw-like surface, projections of which are directed against possible direction of air strike wave. In recesses of sections conical apertures are positioned, from which wells are placed at sharp angle ±(10÷70°) to direction of air strike wave.
EFFECT: higher efficiency and durability.
FIELD: mining industry.
SUBSTANCE: wall has caved-in rock, being in passage with cuts and fully closing the latter, which is formed by prior driving of a fan of coupled ascending drifts, loading charges therein and detonating the latter in order from ends of fan to its center. In rock before wall two mated side horizontal dead-end tunnels are made at sharp angles ±40÷60° to direction of air strike waves and with cross-section area, equal to area of main passage cross-section, and with length 5÷15 of dimensions of passage width. On the side of approach of air strike wave angles of mating surfaces of protected passage and dead-end tunnels are made rounded. After protection from air strike wave and providing for possible crossing of passage rock of wall is stored in horizontal dead-end tunnels.
EFFECT: higher efficiency, lower costs.
2 cl, 7 dwg
FIELD: mining industry.
SUBSTANCE: relation of amplitudes K of high-frequency and low-frequency portions of acoustic oscillations spectrum, generated by cutting tool into coal massif, in process of extraction. Current values of coefficient Km are compared to limit allowed value Km.lim. In that case limit acceptable value Km.lim is continuously automatically corrected in accordance to current value of methane concentration in mine atmosphere, recorded by methane control equipment, and is periodically corrected in accordance to measured hardness of coal by means of special hardness meter. Zone of coal bed is referred to as exhaust-hazardous, if Km≥Km.lim and as not exhaust-hazardous, if Km<Km.lim.
EFFECT: higher precision.
3 cl, 4 dwg, 1 ex
FIELD: mining industry.
SUBSTANCE: method includes driving main ventilation, level backup and ventilation drifts, connecting shafts and extractive block is extracted fully with following backfill. Prior to start of extraction of resources of extractive blocks at cleaning portion closed space is formed by mounting gate and isolating walls, wherein air is forced via ventilation pipeline from high-pressure ventilator. Relation of shaft pressure of air pressure Ps to air pressure Pp at processed portion during process of extraction of extractive block is set and maintained by inequality 1<Pp/Ps≤3.
EFFECT: higher safety of processing of fire-threatening beds to decreased possibility of coal self-ignition.
FIELD: protection from explosions.
SUBSTANCE: method includes building of wall around explosion-hazardous object. Wall is made of two layers, one behind another. First layer of splitters is positioned along radius on the way of explosion products coming from center with harmful dispersed particles contained therein. Second layer is positioned on the way of formed stream flows with spacing relatively to first one. Wall of second layer is made of absorbing fragments, absorbing harmful substances by impacting, and with radial displacement of absorbing fragments relatively to first layer splitters. Space between layers of splitters and absorbing fragments is filled with foam-aero-gel forming mass, interacting with gas flows. Aero-ballistic parameters, mass, number and dimensions of absorbing fragments is selected from relation VΔt≤NxA/2π, where V - average splitters flight speed, determined by pressure of explosion product, aero-ballistic coefficient and mass of each splitter and each absorbing fragment; N - number of splitters; Δt - time of gas-dynamic filtering (during passing of explosion products through layers); A - size of explosion fragment, absorbing harmful substances, concentrated by gas-dynamic jets, after passing by first layer.
EFFECT: weakened air-blast, absorbed harmful dispersed particles.
2 dwg, 1 ex
FIELD: mining industry, particularly to provide dust control in different processes by ejecting dust-laden air and entraining dust particles with liquid spray cone inside device and by separating the formed sludge.
SUBSTANCE: device has body with inlet and outlet orifices, injector nozzle, sludge trap and sludge removal pipe. Spray nozzles communicated with sludge trap through orifices of the body are arranged along inlet orifice perimeter. Sludge trap has floating valve arranged in bottom sludge trap part and installed in sludge removal pipe. Device also has dust catching sheets arranged between inlet and outlet orifices and defining working space for spray cone generated by injector nozzle shaped as expanding diffuser, which provides free spray cone penetration into sludge trap and air suction into inlet orifice. Dust catching sheets located near inlet orifice are inclined from body periphery towards spray cone axis and dust catching sheets arranged near outlet orifice are inclined from spray cone axis to body periphery.
EFFECT: increased capacity and efficiency, possibility of rational wetting liquid utilization.
FIELD: mining industry, particularly elimination of emergency situations.
SUBSTANCE: method involves closing borehole cross-section with extendable means; arranging predetermined volume of non-combustible material above the means, wherein the volume is determined from a given relation; discharging all non-combustible material in the borehole at a time and further distributing portions of non-combustible material having volumes of not less than volume of incoming water. Non-combustible material includes clay and pourable components which are laid in layers above the means, wherein clay volume is equal to pore volume of pourable component.
EFFECT: increased reliability of borehole sealing and water burst liquidation.
3 dwg, 1 ex
FIELD: mining industry, particularly for removing gaseous nitrogen directly from mine atmosphere to use thereof for fire prevention and extinguishing.
SUBSTANCE: nitrogen compressor plant adapted to be arranged in mine tunnel includes several functionally connected modules arranged in series and mounted on small-size movable platforms in maximum possible proximity to nitrogen consumer. Compressor unit is located in front of other components in direction of fresh air jet flow feeding into mine tunnel and non-used exhaust gas mixture is removed from compressor compartments during compressor stoppage along with exhaust air jet control at mine tunnel exit. Gas mixture enriched with oxygen is supplied from membrane gas-separation unit into special mixer to reduce oxygen content in above gas mixture up to safe level by forced dilution thereof with additionally supplied air. The resultant mixture is then moved into mine tunnel along with fresh air jet directed to mine tunnel zones. Membrane gas-separation unit includes several minor gas-separation units. Cleaned air flow exiting from compressor is supplied to membrane gas-separation unit through air flow separator, in which common air flow is divided into several jets. The jets are then moved to minor gas-separation units having lesser end sections through branch lines. When nitrogen consumption is reduced or when air is supplied by compressor the minor gas-separation units are automatically disconnected from separator. Each branch line includes control valve, to which control signal impulse is directed from common control panel or from system adapted to regulate nitrogen consumption.
EFFECT: possibility of continuous nitrogen production from atmospheric air directly in mine and, as a result, increased efficiency of fire prevention and extinguishing and improved safety if mining work performing.
6 cl, 1 dwg