Way to overload the rock mass on conveyor belt
(57) Abstract:The invention relates to the mining industry, in particular to the development of potash deposits, and can be used to improve sanitary and hygienic conditions of work of the staff and dedusting of the rock mass under overload it through the hole on the belt conveyor. Method overloading ore on the conveyor belt includes the assignment in the roof of the conveyor drift in the mouth of a relief well discharge heat, and on the conveyor in the conveyor roadway covered the receiving tray when the overload ore through the discharge hole, the discharge chute and the output tray on the conveyor. Additionally are supporting the production, which shot down well with the conveyor roadway at a place of installation covered the receiving tray, and the mouth of this well in conveyor roadway connecting pipe elbow with cover output tray. The aim of the invention is the dust removal of the rock mass and the improvement of sanitary-hygienic conditions of work. 1 Il. The invention relates to the mining industry, in particular to the development of potash deposits, and can be used to improve sanitary and hygienic conditions conveyer.The known method overloading rock mass on conveyor system, including the assignment in the roof of the conveyor drift in the mouth of a relief well discharge heat, and on the conveyor in the conveyor roadway covered the receiving tray when the overload of the rock mass through a hole, estrus and the output tray on the conveyor .This device is widely distributed in the mining industry, including, for example, and in the potash mines of OJSC "Uralkali", so it is taken as a prototype.The disadvantage of this method is that the rock mass during movement through the borehole carries with it the air, creating in the output bin excessive pressure. Moreover, the greater the length of the borehole, which overloaded the rock mass, the greater is the pressure of the air.Air pressure pushes the dust through density cover output tray, so in conveyor roadway in places overload rock in the air is a significant amount of dust, often exceeding the maximum permissible concentration. This affects the hygienic conditions of work of the staff.Dust settles on the soil conveyor drift and its oborudovanoje device is despite the above, a significant portion of the dust remains in the transportable rock mass and is given to the beneficiation plant, which has a negative effect on the enrichment, for example, potash ore .To resolve the above shortcomings in places overload rock install a special device for removing dust and suction system to improve sanitary and hygienic conditions of work of the staff with additional fans [2, 3].However, the use of additional fans leads to an increase in capital and operating costs for haulage.The aim of the invention is the dust removal of the rock mass and the improvement of sanitary and hygienic conditions of work of the staff due to the removal of dust from cover output tray in isolation from the conveyor drift production of energy moving through the discharge hole of the air.This objective is achieved in that in method overloading ore on the conveyor belt, including the assignment in the roof of the conveyor drift in the mouth of a relief well discharge heat, as on a conveyor belt in a conveyor STI tray on the conveyor, according to the invention are additionally supporting the production, which knocked off the conveyor roadway at a place of installation covered the receiving tray, and the mouth of this well in conveyor roadway connecting pipe elbow with cover output tray.The combination of the listed new features in the proposed method leads to the emergence of new properties - possible removal of dust from cover output tray in isolation from the conveyor drift production of energy moving through the discharge hole of the air without the use of additional fans.The invention is illustrated by the drawing, which shows a conveyor drift and auxiliary production cross-section.The method is as follows.In conveyor roadway with 1 set of belt conveyer 2 is fixed in the roof in the mouth drilled a relief well 3 the discharge chute 4, and mounted on the conveyor covered the receiving tray 5.Near conveyor drift 1 are auxiliary production 6. This may be bias, transport or conveyor drift depending on specific conditions. The auxiliary output can be digitalnow production 6 knock bore 7 with a conveyor drift. The wellhead 7 in the conveyor tunnel 1 connect the pipe elbow 8 with cover output tray 5.To pipe elbow had the shortest length and it does not hang the dust, well 7 are drilling so that its mouth in the conveyor roadway 1 was located near the site of the installation covered the receiving tray 5.When the overloading of the upper tunnel (not shown) of the rock mass it is sprinkled through the discharge hole 3, season 4 and covered the receiving tray 5 on the conveyor belt 2. When this ore carries with it the air, creating in the output bin overpressure.Air pressure pushes out of ore dust for pipe elbow 8 and the bore 7 in the auxiliary production 6. Moreover, the greater the length of the borehole, which overloaded the rock mass, the greater the pressure and the more effectively removes the dust from the rock mass.In supporting the development of 6 the dust settles. To localize dust auxiliary production 6 on both sides of the bore 7 overlapping the flexible or rigid jumpers (shown in Fig.1 is not shown).Of auxiliary production lot 6 deposited dust 9 is removed, for example, scraper conveyor 10 spent in the Noah generation 6 allows you to get rid of dust in the conveyor roadway, eliminate time-consuming cleaning dust from inside it equipment, to improve sanitary and hygienic working conditions.It should be noted that the supply of dust in isolation from the conveyor drift 6 production is only due to the energy of the falling ore without the use of additional fans.The proposed solution allows you to withdraw from the rock mass part of the dust fractions and to reduce the dustiness of the mine atmosphere all the way to its further transportation to the places of its subsequent peresypav on conveyors at the mine and crushing the Department.The reduction in rock mass dust fractions containing, for example, for conditions potash mine mostly barren rock (insoluble residue), allows for an increase in the content of the useful component and an additional economic effect.SOURCES OF INFORMATION
1. Soloviev Century A. Methodological guide to mining in the mines of the Verkhnekamskoe potash Deposit. - M.: Nedra. - 1992. - S. 89. Fig. 3.3 (prototype).2. Herzen, N. And. Improving pneumostome for dedusting of the rock mass in to the and concentrators: a reference guide. - M.: Nedra, 1989. - 197 S. Method overloading ore on the conveyor belt, including the assignment in the roof of the conveyor drift in the mouth of a relief well discharge heat, and on the conveyor in the conveyor roadway covered the receiving tray when the overload ore through the discharge hole, the discharge chute and the output tray on the conveyor, characterized in that it further held auxiliary production, which knocked off the conveyor roadway at a place of installation covered the receiving tray, and the mouth of this well in conveyor roadway connecting pipe elbow with cover output tray.
FIELD: mining industry.
SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C°), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.
EFFECT: higher efficiency, effectiveness, broader functional capabilities.
8 cl, 5 dwg
FIELD: mining industry.
SUBSTANCE: invention can be used for transportation of rock in underground mines for reloading of rock from one conveyor to the other installed at one level. For this purpose device is used containing pair of flight conveyors, forced-draught and suction fans, air chamber with air inlet hole provided with cyclone installed over flight conveyor to be loaded. Air chamber is arranged between conveyors and is furnished with air collector made in form of screen with cells, housing and brushes from side of conveyors. Additional hole is made in bottom of air chamber to deliver air jet at angle to direction of material movement.
EFFECT: device of simple design providing effective and safe reloading of rock from one conveyor to the other installed at one level.
FIELD: mining industry.
SUBSTANCE: invention relates to vibrating facilities and it can be used for letting out ore or other materials and their separation. Proposed vibrating feeder has resilient supports, working member consisting of charging and discharge parts and vibrating drive consisting of two shafts with unbalance weight and motors, one per each unbalance weight. Place of arrangement of vibrating drive is determined basing on the fact that line of connection of axles of unbalance weights is located in area limited by two straight lines square to direction of vibration, one of which passed through center of mass, and the other is located at a distance from center of mass of 1/10L to side of charging part of working member. Axle of unbalance weights are located at different sides from line of direction of vibration passing through center of mass at distance equal to not less than 1/8 where L is distance between resilient supports in horizontal direction.
EFFECT: improved stability of operation of vibrating feeder at unstable supply and impact loads on working member at discharging.
FIELD: mining industry; transport facilities.
SUBSTANCE: invention can be used for transportation of rock under ground, particularly, for reloading of rock from one conveyor to the other arranged at one level. For this purpose loose material reloading device is used which contains inclined and horizontal sections with drive arranged on support between two conveyors. Device is installed in housing with windows from side of conveyors, and is made in form of chain with scrapers passed over rollers and installed for moving in pair of trapezoidal guides. Housing is installed on support by means of hydraulic jacks. Angle of tilting α of side of trapezium is within 35° and 45°.
EFFECT: simple design, provision of effective and safe reloading of rock from one conveyor to the other arranged at one level.
FIELD: mining industry; mine plants.
SUBSTANCE: invention is designed for selective transportation of mineral resources. Proposed conveyor contains rigidly mounted on buntons chute-like section guide conductors with curvilinear sections, articulated members with two load-carrying units freely suspended from axles and arranged symmetrically on each member and provided with gear wheels for selective transportation of load, and guide rolling supports on axles of members for engagement with said guide conductors. Rolling elements of rolling supports are made in form of balls. Conveyor is furnished also with distributed linear hydraulic drive. Guide rolling supports are provided with metal journals with rectangular seats on free places of which detachable inserts are installed accommodating said rolling elements in form of balls. Detachable inserts are installed for corrective displacement by means of pressure spring to adjust distance between guide rolling supports and inner surfaces of chute-like section guide conductors.
EFFECT: provision of reliable operation of conveyor.
FIELD: mechanical engineering; conveyors.
SUBSTANCE: invention relates to conveyors with multichain traction member. Proposed scraper conveyor contains endless traction member consisting of parallel traction chains, two outer chains and one inner chain, closed in vertical plane on end sprockets and resting on guides of panline flight. It is provided with scrapers secured in turn by ends on outer chains, alternating with scrapers freely fitted with clearances between outer chains and attached by ends on inner chain. Scrappers secured on outer chains are provided with cavities for accommodating inner chain. Traction member is furnished with additional inner chain, both inner chains being arranged in middle part of panline flight symmetrically to each other relative to longitudinal axis of conveyor, and scrapers being secured by ends on both inner chains. Distance between outer and inner chains is set less than distance between inner chains.
EFFECT: increased length of flight owing to increased summary breaking force of traction member chains.
FIELD: mining industry.
SUBSTANCE: proposed member includes slats with connecting elements secured on running rollers and round-link chain. Connecting elements are made in form of two guide slats, fastening, fastening pin and yoke enclosing horizontal links of chain, and ends of vertical links are located between guide slats.
EFFECT: reduced metal usage for manufacture of connecting elements, reduced time taken for mounting and demounting, simplified design of traction-and-carrying member of slatband conveyor.
FIELD: mining industry; face and drift conveyors.
SUBSTANCE: proposed section contains lower run 2 and upper run 3 for driving chain scrapers, welded frame structure 1 with interconnected sides, transport bottom 8 and connecting appliances 60. according to invention, sides consists of mirror turned-over solid rolled sections 10 of asymmetric form constant along length of section. Sections 10 are turned outwards and they include lower and upper shelves and raised intermediate shelf connecting lower and upper shelves and provided with bend on which at least one step is made from inner side to support and weld-to at least one intermediate sheet 40A reinforcing rolled sections 10. Transport bottom 8 is welded to two rolled side sections 5 to form replaceable tray 4.
EFFECT: simplified design owing to reduction of number of components, and facilitated manufacture owing to automatic mounting and welding operations.
26 cl, 7 dwg
FIELD: mining; transportation.
SUBSTANCE: tunnel miner includes crawler-tracked carriages, drilling effector, berm cutters, cut-out drums, warding four-section shield with boards and buckets attached to the said sections, chute-like conveyor with walls, control panel of hydraulic system, miner's electric equipment control station, and operator's seat. The miner incorporates two dust-screening flaps mounted pivotally, by means of curtains, on the chute-like conveyor walls at an angle to the vertical. The dust-screening flaps at the operator's seat side feature locking device with arms capable of shifting towards only one direction to reach the stops installed in one flap, and thus to free the adjoining flap.
EFFECT: reduced dust level of the operator's workplace during miner operation.
SUBSTANCE: invention relates to joint element for jointing the chute section of the chain scraper or for the mining machine guide sections, particularly, for the grader guide, incorporating two heads made integral by means of the rod narrowing along the width. Every head side facing the rod is furnished with bulged-round shoulders inclined towards the rod. The invention proposes also the open-side pockets arranged on the chute sections to house to aforesaid joint element.
EFFECT: possibility of transmitting high axial loads at high angular mobility and simpler assembly of jointing elements.
19 cl, 5 dwg