The executive body of the mining machine

 

(57) Abstract:

The invention relates to mining and can be used in cleaning machines for extraction of coal. It improves the efficiency of ventilation, dust suppression and milesaway in the zone of destruction. The Executive body of the mining machine has a housing with a fixed holders, each of which has a longitudinal channel is placed in its holder with a cutter, devices for locking the cutters in the cutter holders, lobovina housing, in which the transverse channels for ejection of air, sprinklers, each of which is located behind the corresponding cutter and directed towards the cutting edge, the channels for the supply of irrigating fluid, a hollow insert, each of which is placed inside the corresponding transverse channel provided with tangential channel, made in globuline. The outer surface of the insert has a stepped shape. Part of the insert with a large outer diameter rigidly mounted in the transverse channel, and a portion of the insert with a smaller outer diameter is on the side of the exhaust portion of the transverse channel and forming with the walls of the annular channel connected to the channel for supplying oil.

The invention relates to the mining industry, mainly for coal, and can be used in mining machines, mainly treatment harvesters designed for the extraction of coal by providing a safe and healthy working conditions of miners.

Known Shearer with jet-type dust suppression system (A. C. the USSR N1214918, E 21 C 27/02, 35/22, publ. 1990), including Executive agencies, irrigation system and additional device for dust suppression, consisting of the ejector with air intake and output openings, located at its ends, and fill, while the ejector is installed with its longitudinal axis parallel to the axis of the harvester on the feeder between the Executive bodies.

The disadvantage of this harvester is a large deletion of the ejector from sources of methane and dust and sparking, which reduces the efficiency of ventilation, dust suppression and pylevzryvozashchity kutkovoi zone in the process of destruction of the mountain massif of the Executive bodies (augers).

It is also known a device for removing and trapping dust and gases generated during operation of the Shearer.with. The USSR N1810533 A1, E 21 C 35/22, publ. 1993), including the concentric raspolozhennosti with sprinklers, and an annular cavity formed by the shell and the hub of the screw, the holder fixed to the other end of the rotary gear, and sprinklers placed in the annular cavity and shell and auger hub are interconnected by ribs.

Although this device in comparison with the above similar ejectors close to sources of methane and dust and sparking, ventilation, dust suppression and pilestredet kutkovoi area is still insufficient to ensure safe and healthy working conditions of miners.

The closest in technical essence is the Executive body of the mining machine (German patent DE 4230678 A1, E 21 C 25/10, 35/22 and E 21 F 5/00, publ. 1994), including the case with a fixed holders, each of which has a longitudinal channel is placed in its holder with a cutter, devices for locking the cutters in the cutter holders, lobovina housing, in which the transverse channels for ejection of air, sprinklers, each of which is located behind the corresponding cutter and directed towards the cutting edge, the channels for supplying irrigating fluid.

This Executive body is dasti to the cutting edge of the cutter skinny, that prevents necessary suction air above and sufficiently free of its expiration.

The technical problem solved by this invention is to increase the efficiency of ventilation, dust suppression and pylevzryvozashchity in the zone of destruction through the creation of vortex rotation of the irrigating fluid and the necessary suction of fresh air supplied to the zone of destruction.

The task is solved in that the Executive body of the mining machine includes a housing with a fixed holders, each of which has a longitudinal channel is placed in its holder with a cutter, devices for locking the cutters in the cutter holders, lobovina housing, in which the transverse channels for ejection of air, sprinklers, each of which is located behind the corresponding cutter and directed towards the cutting edge, the channels for supplying irrigating fluid, provided with a hollow inserts, each of which is placed inside the corresponding transverse channel provided with tangential channel, made in lobeline, moreover, the outer surface of the insert has a stepped shape, and the insert part with a large outer diameter is hardcoded to pop the CSO channel and forming with the walls of the annular channel, connected to a channel for supplying irrigating fluid through the tangential channel, and insert length shorter than the length of the transverse channel, the length of the annular channel defined by the location of the pair of tangential and transverse channels, and the pair made with the possibility of creating a rotation irrigating fluid collinear with the rotation of the housing.

In addition, the outer surface side of the insert with a smaller diameter is made in the form of a truncated cone facing the exhaust side of the transverse channel, and the insert is equipped with a lattice fence, placed on the end surface on the side opposite the exhaust side of the transverse channel, with lattice fencing is made from elastic material and has at least one wall.

Rationale to achieve a positive effect of the invention by using distinctive signs following.

1. Supply of cross-channel insert with an internal cavity (transverse channel has a tangential channel for supplying irrigating fluid will create a vortex spiral rotation irrigating fluid around the longitudinal axis of the transverse channel. Taco is oprovergaemye stagnant (kutkovoy the area of destruction of the gas-bearing coal seam with liquefy elevated concentrations of dangerous explosions of gas, for example, methane.

2. The execution of the outer surface of the insertion of stepped form and hard to install in the transverse channel portion of the insert, which has a larger diameter will allow to form with the walls of the transverse channel, the annular channel. The length of the annular channel defined by the distance from the stage (location of the pair of tangential and transverse channels) until the end of the insert. The length of the annular channel plays an important role in the establishment of the vortex spiral rotation of the irrigating fluid and the necessary suction of fresh air.

3. Inserts with a length shorter than the length of the transverse channel, and performing the outer surface side of the insert with a smaller diameter in the form of a truncated cone facing the exhaust side of the transverse channel, caused by the necessity to create a vortex and torch dispersed irrigating fluid within the transverse channel or in the immediate vicinity (at its output) to the required suction of fresh air for dilution of high concentration of methane and dust suppression water-air mixture in kutkovoi the failure zone of the formation in the area of limited volume (space) between lobovina what I defined terms location of the cutters and the cutting edges and ranges from 30 to 60 mm depending on the diameter of the Executive body. The diameter of the Executive body affects the ratio of diameter and length of the transverse channel. If this ratio is within more than 0.5 to 0.6, then the outer surface side of the insert with a smaller diameter must have a truncated cone facing the exhaust side of the transverse channel. Truncated cone promotes the formation of a vortex at a shorter distance from the insert.

More effective dust suppression in the area of limited volume is achieved by gravitational and thermal coagulation (clumping), while the coarse fraction of dust are deposited mainly by the gravitational coagulation, and fine, including respirable fraction is due to thermal coagulation. The rate of adhesion of the fine particles of dust depends mainly on the concentration of fog, i.e. its supersaturation. If this concentration is sufficiently high, the effect will be significant, so in addition to irrigation edges of incisors in the process of destruction of the reservoir offers a new technical solution as to liquefy methane, and to improve the efficiency of dust suppression using the condensation method for the deposition of mine dust.

4. Vybornova.polina with rotation of the housing and will increase the vortex spiral rotation irrigating fluid around the longitudinal axis of the transverse channel and increase efficiency as suction of fresh air, and dust suppression.

Lattice fence will prevent the ingress of large pieces of rock into the cavity of the insert. Running fence of elastic material, for example, a wire spring or wire spiceboy, will give him flexibility (pruinosity).

5. In the known technical solutions are the hallmarks of this combination and the relationship was not found.

The essence of the Executive body of the mining machine illustrated drawings, in which Fig.1 shows part of the Executive body with lobovina and vanes; Fig. 2 - part lobovina with transverse channels; Fig.3 is a schematic diagram of a device system suction of fresh air and irrigation edge of the cutter; Fig. 4 - node a of Fig.1 (section inserts into the transverse channel); Fig.5 - the node B of Fig.2 (view a-a of Fig.4), and Fig.6 is an embodiment of the transverse channels in lobeline Executive body of large diameter; Fig.7 is an embodiment of the device suction of fresh air in the tool holder with a round shank, and Fig.8 is an embodiment of the device suction of fresh air in the tool holder with rectangular shank; Fig.9 is a view In Fig. 8.

The Executive body of the mining machine cluen in it holder 4 with the cutter 5, device 6 for fixing the cutters in the cutter holders, lobovina 7 case, in which the transverse channels 8 for the ejection of air, sprinklers 9, each of which is located behind the corresponding cutter and directed towards the cutting edge 10, the channels 11 and 12 for supplying irrigating fluid. This Executive body provided with a hollow annular inserts 13, each of which is placed inside the corresponding transverse channel provided with tangential channel, made in globuline. The outer surface 14 of the insert has a stepped shape 15 (see Fig. 4 and 9). Part 16 of the insert with a large outer diameter rigidly mounted in the transverse channel, and a portion 17 of the insert with a smaller outer diameter is on the side of the exhaust portion 18 of the transverse channel and forming with the walls of the annular channel 19 connected to the channel 11 for supplying irrigating fluid through the tangential channel 20. Length l1(see Fig. 9) insert a shorter length l2the transverse channel. Length l3the annular channel defined by the location of the coupling 21 tangential and transverse channels. The pair is close to the step 15. The specified paired with the ability to create turnovers is pus (the direction of rotation of the body indicated by arrow 23) (see Fig.3 and 6). The outer surface side of the insert with a smaller diameter may be in the form of a truncated cone 24 facing the exhaust side 18 of the transverse channel. The insert is equipped with grills, 25 (see Fig. 4, 5 and 9) placed on the end surface 26 side 27 opposite the exhaust side 18 of the transverse channel (from the entrance into the cavity 28 of the insert). To impart pliability lattice fence can be made of elastic material such as spring wire, and has one or more partitions 29. The Executive has the blades 30, and his lobovina 7 forms with the surface outcrops of the formation, i.e., the bottom line, limited (limited space) 31 (see Fig. 1).

The Executive body of the mining machine operates as follows.

In the process, the Executive body of the irrigating fluid enters the channel 11 (see Fig. 1, 3, 4, 5 and 6) and by the tangential channel 20 and channel 12, respectively, in the transverse channel 8 and the nozzle 9. Because the cross-channel irrigating fluid flows through the tangential channel, the annular channel 19 (see Fig. 4 and 9) creates a spiral rotation of the liquid in the direction towards the exhaust part 1 of the ora is created at the inlet cavity 28 of the insert 13 within the fence 25 suction of fresh air and supplied it in trudnoperevarivaema kutkovoy zone of destruction of gas-bearing coal seam with liquefy elevated concentrations of dangerous explosions of gas, for example methane. In the process of mixing of irrigating fluid and fresh air forms a water-air mixture, which, striking the surface outcrops of the formation, limited 31 becomes supersaturated fog. The effectiveness of dust suppression this mist is very high, because it does not depend on the nature of the surface of the fine particles of dust.

Experimental verification system ejection of air in the laboratory, and analysis of experimental data from the literature on this issue showed that, compared with the closest analogue to the present invention due to the structural embodiment, combinations and relations of distinctive features has advantages manifested:

1) in the effective ventilation of kutkovoi the zone of destruction and exposure of the reservoir, which is the main source of ignition and explosion;

2) in the effective suppression of dust by creating a limited space dense supersaturated fog. The process of condensation of moisture on mine suspended dust particles in supersaturated conditions of fog flows by itself, because in the limited space between lobovina Executive body and the surface is found, the tion), with the advent which begins unlimited growth of the droplets on the speck of dust is achieved for certain types of dust already at a relative humidity of 78%. The critical saturation for insoluble condensation nuclei such as dust, is determined by their sizes, and the first condensation occurs on fine dust fractions, especially respirable most pneumoconiotic for the health of the miners dust particles less than 5 microns. System ejection air operable when the pressure of the irrigating fluid (water) of 0.5 MPa or more.

The base object (log, "Coal", 1996, N5, S. 30) contains the Executive bodies of the treatment combines K-800 and-900 system with high-pressure irrigation using sprinklers and nozzles. The ejection system of the ventilation kutkovoi zone is absent, therefore, the concentration of methane and fine dust fractions in the process of destruction of a rock is relatively high.

We offer Executive body of the mining machine eliminates the disadvantages of the nearest analogue and especially the underlying object. Execution at lobeline housing screw transverse channels with inserts and tangential channels for supplying irrigating fluid will allow although the new working conditions of miners.

1. The Executive body of the mining machine, comprising a housing with a fixed holders, each of which has a longitudinal channel is placed in its holder with a cutter, devices for locking the cutters in the cutter holders, lobovina housing, in which the transverse channels for ejection of air, sprinklers, each of which is located behind the corresponding cutter and directed towards the cutting edge, the channels for supplying irrigating fluid, characterized in that it is provided with a hollow inserts, each of which is placed inside the corresponding transverse channel provided with tangential channel, made in lobeline, moreover, the outer surface of the insert has a stepped shape, and the insert part with a large outer diameter rigidly mounted in the transverse channel, and a portion of the insert with a smaller outer diameter is on the side of the output of the transverse channel and forming with the walls of the annular channel connected to the channel for supplying irrigating fluid through the tangential channel, and insert length shorter than the length of the transverse channel, the length of the annular channel defined by the location of the pair of tangential and poperechnov what about the rotation of the body.

2. The Executive body of the mining machine under item 1, characterized in that the outer surface side of the insert with a smaller diameter is made in the form of a truncated cone facing the exhaust side of the transverse channel.

3. The Executive body of the mining machine under item 1, characterized in that the insert is equipped with a lattice fence, placed on the end surface on the side opposite the exhaust side of the transverse channel.

4. The Executive body of the mining machine for PP.1 to 3, characterized in that the lattice fencing is made from elastic material and has at least one wall.

 

Same patents:

The invention relates to mining and can be used when extinguishing underground fires

The invention relates to mining and can be used in coal mines in the fight against endogenous fires

The invention relates to mining and can be used to isolate damaged sections from the existing mine workings

The invention relates to mining and can be used to produce suspensions for fighting underground fires

The invention relates to the mining industry and can be used to prevent gas-dynamic phenomena in mines and mines

The invention relates to the mining industry and is intended for use primarily in the treatment combines

The invention relates to the mining industry and can be used during the preparatory workings to prevent gas-dynamic phenomena
The invention relates to the mining industry and can be used to determine the extent of the outburst rocks

The invention relates to mining and can be used in the degassing of coal seams deposits that can be mined in the future, traditional ways; deposits that are deposited in difficult mining and geological conditions and are a source of methane for kartirovanija and future consumption, as well as fields not directly related to coal mining

The invention relates to the mining industry and is intended for use primarily in the treatment combines

The invention relates to the mining industry, in particular to the Executive bodies of the tunnel excavation and mining machines, and can be used in the formation of openings in rocks

The invention relates to cutters of mining machines

The invention relates to cutters of mining machines

The invention relates to cutters of mining machines

The invention relates to mining equipment and can be used in the mine working machines equipped with a sprinkler system with a supply of fill in the area of rock breaking cutters mounted on the cutting crown

Shearer // 2024743
The invention relates to equipment for mechanized excavation of coal dust suppression system and serves to improve the reliability of the harvester

The invention relates to the mining industry and can be used to reduce airborne dust in the faces of preparatory workings, passable harvesters

The invention relates to the mining industry and is intended for use primarily in the treatment combines
Up!