Irrigation device loading and transshipment of items of mining enterprises
(57) Abstract:Usage: to suppress dust during loading and reloading of the conveyed bulk materials in underground workings and surface complexes. The inventive irrigation device loading and transshipment of items of mining enterprises contains a pipe for supplying fluid communication with the fill associated with the last sensitive element in the form of two shoulders of the lever, pivotally mounted on the suspended movable support in a vertical position. The upper arm of the lever is made in the form of twin forks, in the opening where the shutoff valve in the form of a reflective liquid concave razdobreevoy plate placed on a horizontal axis perpendicular to the outlet of the fill with the possibility of angular displacement. The other lever arm is installed with the possibility of contact with bulk material. 1 C. p. F.-ly, 4 Il. The invention relates to the mining industry and can be used to suppress dust during loading and reloading of the conveyed bulk materials in underground workings and surface complexes.Known construction and arrangement of paragraphs peace with the outlet and is connected through a valve to regulate the flow of fluid with a sensitive element, made in the form mounted on a horizontal shaft plate, one end of which is mounted for contact with bulk material, and the other via Cam is kinematically connected with the valve for regulating the fluid supply. The disadvantages of the known irrigation devices are not excluded breakdown of the irrigation device in the presence of the transported material "oversized"; when unexpected stops of the conveyor and in the presence of cargo being transported on the conveyor belt free after water from the nozzle onto the conveyor belt that leads to excess water, wetlands transshipment point of the transported material.The closest to the technical nature of the present device is fully automatic irrigation site loading of bulk materials, comprising a pipe for supplying fluid communication with the fill associated with the last sensor element made in the form of two shoulders of the lever, one arm of which is installed with the possibility of contact with bulk material, and the other is connected with the shut-off valve  the mechanism of rotation of the sensing element and the shut-off valve, which feeds the secure adequate performance of the device at random stops of the conveyor with the transported cargo, do not provide reliable operation in thick waters.The objective of the invention is to increase the reliability of the device by eliminating the clogging of the nozzle and potential damage from the "oversized" in the transported material, improve the performance of the device at random stops conveyors, and also simplify the design of the device.This is achieved by the fact that in irrigation device loading and transshipment of items of mining enterprises, consisting of a pipe for supplying fluid communication with the fill associated with the last of the sensing element in the form of two shoulders of the lever, one arm of which is installed with the possibility of contact with bulk material, and the other is connected with the shut-off valve, two shoulders lever pivotally mounted on the suspended movable support in a vertical position, the upper arm of the lever is made in the form of twin forks in the opening where the shut-off valve, made in the form of a reflective liquid concave razdobreevoy plate, posted on shifted up vertically relative to the outlet of the fill horizontal axis perpendicular to the outlet of the fill with Uglova what about the vertically relative to the outlet of the fill at a distance of 0.5-1.0 hole diameter. In addition, the difference consists in that the end part of the fill is made of elastic material.In Fig.1 schematically illustrates the device of Fig.2 is a view along arrow a in Fig. 1; Fig.3 section b-b of Fig.2; Fig.4 section C-C in Fig.3.The irrigation device of cargo handling items mines consists of a frame 1, on which by means of the hinge 2 is suspended from a support 3. The sensing element in the form of two shoulders lever pivotally mounted on a moveable support 3, the lower larger shoulder 5 is placed with the possibility of contact with the transported falling material, and the upper shoulder 6 provided with a locking valve 7, which is made in the form of a reflective liquid concave razdobreevoy plate and placed on the offset vertically upward relative to the outlet 8 fill 9 the horizontal axis 10 with the possibility of angular displacement. The end part of the nozzle 9 provided with an elastic sealing material 11, while the upper lower shoulder 6 made in the form of twin forks 12, in the opening where the locking valve 7. The stop 13 is mounted on one of the terminals of the plug 12 to limit the turn-off valve 7. The material to be conveyed is overloaded redlagaemoe the device is as follows.In the initial position in broken lines 14 and 15, when the traffic there is, the sensing element 4 under the action of gravity lower large shoulder 5 is placed vertically (or at an angle close to vertical). The initial position of the sensing element 4 depends on the length of the lower arm, the weight, and the water pressure in the fire the pipeline mine. In any case, the original position it is determined experimentally. Thus locking the valve 7 is placed perpendicular to the discharge opening 8 fill 9 and tightly pressed against the elastic sealing material 11, which eliminates the expiry of water from the nozzle 9. When enabled, drives the conveyors 14 and 15 are transported by falling material sensitive element 4 will be deflected from the vertical position, the upper shoulder 6 will be displaced by some angle and release the locking valve 7. Flowing under pressure jet of water will reject him at some angle that is limited by the stop 13. Deviation-off valve 7 is due to the fact that as mentioned above, the locking valve 7 is placed in the opening of the upper arm 6 of the sensing element 4 on the horizontal axis 10, which in turn shifted vyhodnogo holes 9. Flowing out of the fill water under pressure 0.6-0.8mpa in contact with the metal inclined located concave surface of the locking valve 7 is sprayed, forming a flame melkodispersionnoy water. In the absence of a feed conveyor 14 of the bulk material when operating the conveyors sensitive element 4 with the transported falling material is not sensitive element 4 will occupy a vertical initial position, the upper shoulder 6 will press the locking valve 7 to the outlet 8 of the nozzle 9 and the flow of water stopped, and after the water happens almost instantly, as the locking valve is placed directly at the outlet unlike the prototype, where between the valve and the nozzle there is a segment of the pipeline, ensuring the expiry of water for some time after shut-off valve. The overlap of the fill will happen at random stops the conveyors 14 and 15 (unanticipated withdrawals of voltage drives conveyors), because the deflecting flow of the transported material will not be that will reduce fluid flow. When the movement of the conveyors and the presence of large "oversized" damage irrigation devices are not pradlagaetsja in the direction of movement of the latter. After the passage of the "oversize" through transshipment point irrigation device will return to its original position, continuing to operate normally. 1. IRRIGATION DEVICE LOADING and TRANSSHIPMENT of ITEMS of MINING ENTERPRISES, including the pipeline for supplying fluid communication with the fill, and associated with the last sensitive element in the form of two shoulders of the lever, one arm of which is installed with the possibility of contact with bulk material, and the other is connected with the shut-off valve, wherein the two shoulders lever pivotally mounted on the suspended movable support in a vertical position, the upper arm of the lever is made in the form of twin forks, in the opening where the shut-off valve, made in the form of a reflective liquid concave raznopolaja plate, posted on horizontal axis perpendicular to the outlet of the fill with the possibility of angular displacement.2. The device under item 1, characterized in that the horizontal axis of the shut-off valve is shifted upward vertically relative to the outlet of the fill at a distance of 0.5 to 1.0 diameter holes, and the end part of the fill is made of elastic material.
FIELD: mining, particularly methods and devices to prevent dust generation in tailing pit benches by moistening thereof with water or liquid binding agent.
SUBSTANCE: device comprises self-moving vehicle, for instance pontoon water craft, provided with pump, vessel for reagent, hydraulic monitor, unit with executive tool for channel forming in bank area and isolated power generating plant. Above mechanisms are installed on water craft deck. Hydraulic monitor may rotate in horizontal and vertical planes. Drives of all mechanisms are linked with the power generating plant. Executive tool is installed below water craft floating line. Vessel for reagent is provided with proportioning device. Dust control method involves initially installing the water craft on tailing pit water surface; directing the water craft towards bank to area to be sprayed, in which working tool forms channel for water craft movement; pumping water from tailing pit into hydraulic monitor; adding reagent from vessel to water with the use of proportioning device and spraying the obtained liquid over dust-forming area. Water from tailing pit is used for above spraying operation and for water craft movement.
EFFECT: increased dust control efficiency.
2 cl, 2 dwg
FIELD: mining industry, particularly means or methods for preventing, binding, depositing, or removing dust and preventing explosions or fires.
SUBSTANCE: method involves treating dust-and-gas cloud with finely-dispersed ionized liquid, for instance with water, with the use of sprinkling plants alternately arranged so that ions of liquid spays generated by plants have opposite charges. The sprinkling plants are located outside zone of possible plant damage or are protected against explosion action. Sequence of plant alternation, ionicity, liquid quantity and liquid spraying pattern are determined from tests and calculations based on particular pit or underground mine blasting conditions.
EFFECT: reduced time of particle coagulation on liquid droplets and time of particle precipitation, possibility to reduce dust cloud propagation.
2 cl, 2 dwg
FIELD: mining industry, particularly to catch dust generated by machines and/or rigs in mines and tunnels.
SUBSTANCE: dust catcher comprises body with precipitation member formed as demister comprising moistening nozzles and drip catching means. Fan with drive is arranged near inlet/outlet side thereof. Moistening nozzles located in front of the demister in air flow direction are made as spaced multijet nozzles having separate sprayers, which form common sprayed curtain. The fan is installed in cleaned gas flow downstream the demister and drip catching means. The fan is arranged in case connected to dust catcher body. Demister is installed in contaminated air flow at inlet side and is arranged in inclined position. Upper edge thereof projects relatively lower edge. Air deflectors are arranged between the demister and drip catching means. Bottom sheet is inclined towards drip catching means. Multijet nozzles project towards contaminated air flow and are connected to load-bearing frame obliquely installed in accordance with demister inclination angle. Dust catcher is provided with separate vessels for additives, which pass through metering device into water-pipe. Mixer connected to water-pipe or built in water-pipe is installed downstream the metering device. Spraying device is arranged in front of moistening nozzles and demister with drip catching means. Spraying device comprises spraying heads, which create water mist and is connected with water source or with water-pipe and metering device with mixer. Dust-contaminated air flow is mixed with water mist and then the obtained sludge is gathered. Moist air is dried by water droplet separation and then the dried air is introduced in cleaned gas flow. Gases generated as a result of explosion are laden with water mist preliminarily mixed with additives, which create ecologically safe compositions with nitrose or similar gases formed during explosion.
EFFECT: increased operational efficiency and reduced dust catcher size.
20 cl, 8 dwg
FIELD: mining, particularly to depress dust generated during rock milling in enterprises of mining and smelting, coal, construction industries.
SUBSTANCE: plant comprises control unit, high-pressure source, siphon-type vessels filled with ionized water having opposite polarities, spraying jets, which generate fine spray, electromagnetically driven pneumatic and hydraulic valves, pressurizing and purging air channels, water pipelines, coupling members for air and water pipelines and control circuits.
EFFECT: increased dust depression efficiency.
SUBSTANCE: invention is related to the field of mining, in particular, to safety issues in coal mines, namely to explosions of methane caused by friction spark created as a result of mine machines picks friction against hard rocks. Method is suggested to assess danger of rocks regarding friction inflammation of air-methane mixture, which consists in the fact that rock samples are taken, their strength and content of silicon dioxide are determined, and then tests are carried out at test bench danger of friction sparking. In order to perform test, explosive mixture is formed in test bench, and nominal cutting speed is increased 1.5 times. If at hardness of rocks f from 3 and content of silicon dioxide up to 30% no inflammations were observed and no friction sparks were produced, then rock is considered safe. If at hardness of rock from 3 to 5 and silicon dioxide content from 30 to 50% with availability of friction sparks with temperature of up to 300°C and absence of inflammations, rock is considered as spark-hazardous of the 1st extent, and if their temperature is more than 300°C - to spark-hazardous of the 2nd extent. If at least one inflammation occurred from friction sparks, rock is considered highly explosive. Use of suggested method makes it possible to increase safety of cleaning and preparatory works.
EFFECT: development of fundamentals for rock classification procedure by danger of friction inflammation in case of their damage with account of their physical-mechanical properties.
SUBSTANCE: device of pressure water supply to irrigation systems arranged on sections of shield mechanised support for underground mines, includes at least one system of plough or combine working element route irrigation in longwall, and at least one system for irrigation of worked space, upper ceiling and/or side mine with central water line for supply of spray nozzles of irrigation systems and switching valves. At the same time all switching valves for irrigation systems are installed in a single irrigation valve box, which is equipped with connection for water line and is arranged on section of shield mechanised support in the form of unit separated from hydraulic valve box.
EFFECT: improved operational safety of device for water supply into irrigation system.
8 cl, 4 dwg
SUBSTANCE: method includes long-term treatment of a dust and gas cloud with water vapour during the blast and afterwards. Vapour is produced by a mobile steam generator by introduction of water in it that has been heated previously up to 65-70°C. The steam generator is installed in the place that is safe from the blast and is directed along with the wind. Besides, prior to blasting, atmosphere above the blasting area undergoes treatment.
EFFECT: higher efficiency of dust suppression, manoeuvrability of plants.
SUBSTANCE: previously laboratory analysis is carried out on coal from a bed and its packs to detect availability of elements and substances in them that may create compounds with water; natural cracking is detected, as well as cleat in the coal bed; wells are drilled from a bottomhole by coal, with length more than by 1 m of the mine skirting cycle; water is injected into the bed with continuous measurements of the methane, water pressure, injection time; the mine is tunnelled for the value of the hydrated bed with the speed that does not exceed methane release within permissible norms; in the area of bed hydration blast holes are drilled in the sides of the mine at each cycle to detect the hydration area. During arrangement of the mine, parameters are varied, which are related to injection of water into bed, maximum reduction of the released methane, optimising arrangement of the mine.
EFFECT: higher efficiency of development of gas-bearing coal beds.
SUBSTANCE: method involves supply of frozen fluid obtained by mixing with liquid gas to the worked-out space. In addition, distribution of coal dust supplied to the worked-out space is determined as to particle fractions. Distribution of the obtained frozen fluid particles as to fractions is equal to distribution of coal dust as to particle fractions.
EFFECT: improving the prevention efficiency of coal self-ignition in mines.
SUBSTANCE: method includes spraying a liquid in a flow of air arriving to a mined space. At the same time liquid spraying is alternated with supply of dry gas into coal deposits. Moisture content in gas discharged from the coal deposit is measured. Gas supply is replaced with liquid spraying in case moisture content stops dropping in gas discharged from coal deposit.
EFFECT: improved safety of mining works.