1. A mining dual-energy powder conveying device is characterized in that a spiral conveyor (28) is fixedly arranged on a movable base (1), the axis of a spiral blade of the spiral conveyor (28) is in an inclined state with the horizontal plane, a discharge port end of the spiral conveyor (28) is communicated with the inner top of a mixing chamber (2), a plurality of cantilever levers (27) penetrating through the left and the right of the mixing chamber (2) are fixedly arranged at the upper part of the mixing chamber (2), a screen (25) is arranged inside the mixing chamber (2) at the lower end of the cantilever lever (27), the screen (25) is hung on the cantilever lever (27) through a plurality of springs (26), a compressed air nozzle (4) and a discharge nozzle (3) are fixedly arranged on the front wall and the rear wall of the mixing chamber (2) at the lower part of the screen (25) respectively, and the compressed air nozzle (4) and the discharge nozzle (3) are positioned on the same axis, and the part of the material nozzle (3) in the mixing chamber (2) is of a bell mouth-shaped structure, a partition plate (30) with through holes distributed thereon is fixedly arranged in the mixing chamber (2) at the lower part of the air-reducing nozzle (4) and the material-discharging nozzle (3), a fine mesh-shaped filter screen (31) is arranged on the upper plane of the partition plate (30), an auxiliary air nozzle (29) is fixedly arranged at the lower part of the mixing chamber (2), the auxiliary air nozzle (29) is communicated with the inside of the mixing chamber (2) at the lower end of the partition plate (30), a speed reducer (6) is fixed on the shell of the spiral conveyor (28), the high-speed input end of the speed reducer (6) is connected with the output end of the pneumatic motor (5), and the low-speed output end of the speed reducer (6) is connected with the spiral vane shaft of the spiral conveyor (28) through a transmission system (9).

2. The mining dual-energy powder conveying device according to claim 1, characterized in that a third quick connector (19) is fixedly arranged on the air cylinder (18), the third quick connector (19) is sequentially communicated with a third stop valve (21) and a first constant pressure regulating valve (23) and a compressed air nozzle (4) through a high pressure air pipe, the outlet end of the first constant pressure regulating valve (23) is sequentially connected with a flow regulating valve (32) and an auxiliary air nozzle (29) through a branch high pressure air pipe, a fourth quick connector (20) is fixedly arranged on the air cylinder (18), the fourth quick connector (20) is sequentially connected with a fourth stop valve (22), a second constant pressure regulating valve (24) and the air inlet end of the pneumatic motor (5) through the high pressure air pipe, a first stop valve (12) is arranged on the air cylinder (18), the first stop valve (12) is connected with a first quick connector (13), a second stop valve (14) is arranged on the air storage cylinder (18), and the second stop valve (14) is sequentially connected with the second quick connector (15) and an air outlet of a manual air pump (16) through a high-pressure air pipe.

3. The mining dual-energy powder conveying device is characterized in that the air storage cylinder is arranged on the movable base (1) in a replaceable structural form.

Background

In the process of extracting gas by drilling holes in the underground, air leakage cracks can be generated in a drilling hole area, so that the extraction concentration of the gas in a coal seam is reduced. In order to improve the gas extraction effect and ensure the safety of a gas extraction system, scientific research personnel invent a secondary hole sealing method for improving the gas extraction concentration of a coal seam drilled hole (ZL 200810023609.5), and the method utilizes compressed air in an underground compressed air system to convey powder to cracks around the drilled hole through a powder conveying device so as to block a gas leakage channel, so that the extraction effect is improved. However, the existing powder conveying device needs to use high-pressure air in a compressed air system as conveying power to convey granular powder, has the defects of large volume, inconvenient movement and the like, and is particularly not suitable for underground windless places.

Therefore, the invention has the advantages of small volume and convenient movement, and can be suitable for underground windless places, wherein the Chinese invention patent number is 201210029893.3, the publication number is CN 102536153B, and the name is 'mining manpower supercharged powder conveying device' discloses a powder conveying device which does not need high pressure in a compressed air system and takes air as conveying power.

Although the disclosed technology has the above advantages, the technology has the disadvantages of large labor intensity and low working efficiency due to the pure manpower used as the power source, and at the same time, the adaptability is poor, for example: the powder material falling device can not be simultaneously suitable for a place with a compressed air source and a place without the compressed air source, in addition, the powder material falling in the disclosed technology depends on the vibration of a pneumatic vibrator to promote the powder material falling, so the quantity of the falling materials can not be controlled, the using effect is unstable, in addition, the spraying principle adopted in the disclosed technology with the authority publication number of CN 102536153B is based on the gas jet principle, and the parameters and the position of a nozzle can be determined only by strict calculation or simulation experiments, so the defects of complex design and poor control of process parameters exist.

Disclosure of Invention

The invention aims to solve the problems existing in the prior art: the novel mining powder conveying device has the advantages of large labor capacity, low working efficiency, poor adaptability, unstable use effect, complex design and poor control of process parameters, and can effectively overcome the defects, namely: a mining dual-energy powder conveying device.

The technical scheme adopted by the invention for realizing the purpose is as follows: the mining dual-energy powder conveying device is composed of a movable base 1 and an air storage cylinder 18 arranged on the movable base 1, wherein the air storage cylinder is arranged on the movable base 1 in a replaceable structural form, namely: the air storage cylinder 18 can be quickly fixed or quickly taken down on the movable base 1 so as to facilitate the replacement of the air storage cylinder 18 with sufficient air source under the condition that the internal air source is used up or is about to be used up, the movable base 1 is also fixedly provided with a screw conveyer 28, the axis of a screw blade of the screw conveyer 28 is in an inclined state with the horizontal plane so as to facilitate the conveying of powder on the screw conveyer with gravity and achieve the purposes of facilitating the feeding and reducing the energy consumption, the discharge port end of the screw conveyer 28 is communicated with the inner top of a mixing chamber 2, a plurality of cantilever levers 27 penetrating through the left side and the right side (or the front side and the back side) of the mixing chamber 2 are fixedly arranged at the upper part of the mixing chamber 2, a screen 25 is arranged in the mixing chamber 2 at the lower end of the cantilever lever 27, and the screen 25 is hung on the cantilever levers 27 through a plurality of springs 26, the enveloping surface of the screen 25 is similar to the horizontal section of the mixing chamber 2, and at the same time, the screen 25 is ensured to be positioned at the lower part of the discharge port of the screw conveyor 28, so that the powder falling from the discharge port of the screw conveyor 28 can be received by the screen 25, a compressed air nozzle 4 and a discharge nozzle 3 are respectively and fixedly arranged on the front wall and the rear wall of the mixing chamber 2 at the lower part of the screen 25, the compressed air nozzle 4 and the discharge nozzle 3 are positioned on the same axis, the part of the material nozzle 3 positioned in the mixing chamber 2 is in a horn mouth shape structure, a partition plate 30 with through holes distributed thereon is fixedly arranged in the mixing chamber 2 at the lower part of the compressed air nozzle 4 and the discharge nozzle 3, a fine mesh-shaped screen 31 is arranged on the upper plane of the partition plate 30, the screen 31 is selected to ensure ventilation and ensure that the powder does not pass through the screen 31, an auxiliary air nozzle 29 is fixedly arranged at the lower part of the mixing chamber 2, the auxiliary air nozzle 29 is communicated with the interior of the mixing chamber 2 at the lower end of a partition plate 30, the mixing chamber 2 is also fixed on the movable base 1, a speed reducer 6 is fixed on the shell of the screw conveyer 28, the high-speed input end of the speed reducer 6 is connected with the output end of the pneumatic motor 5, and the low-speed output end of the speed reducer 6 is connected with a screw impeller shaft of the screw conveyer 28 through a transmission system 9.

The air reservoir 18 is fixedly provided with a third quick connector 19, the third quick connector 19 is sequentially communicated with a third stop valve 21, a first constant pressure regulating valve 23 and the compressed air nozzle 4 through a high-pressure air pipe, and the outlet end of the first constant pressure regulating valve 23 is sequentially connected with a flow regulating valve 32 and an auxiliary air nozzle 29 through a branch high-pressure air pipe. A fourth quick connector 20 is fixedly arranged on the air cylinder 18, the fourth quick connector 20 is sequentially connected with a fourth stop valve 22, a second constant pressure regulating valve 24 and the air inlet end of the pneumatic motor 5 through a high-pressure air pipe, an air pressure gauge 10 is arranged on the air cylinder 18, the air pressure gauge 10 is used for displaying the air pressure in the air cylinder 18 in real time, a safety valve 11 is arranged on the air cylinder 18 and is used for achieving the effect of pressure relief safety when the air pressure in the air cylinder 18 reaches a limit value, a first stop valve 12 is arranged on the air cylinder 18, the first stop valve 12 is connected with a first quick connector 13, a second stop valve 14 is arranged on the air cylinder 18, and the second stop valve 14 is sequentially connected with the air outlet of a second quick connector 15 and a manual air pump 16 through the high-pressure air pipe, a water drain valve 17 is arranged at the lowest level of the air storage cylinder 18, the water drain valve 17 is used for periodically draining moisture accumulated in compressed air, a storage bin 7 is fixed at the feed inlet end of a screw conveyor 28, and a bin cover 8 is arranged on the storage bin 7.

The working method and the working principle of the invention are as follows:

under the condition of no compressed air power source, all the stop valves are closed in advance, compressed air with certain pressure is conveyed into the air storage cylinder 18 through the manual air pump 16, when the pressure displayed by the pressure gauge 10 reaches a set value, the third stop valve 21 and the fourth stop valve 22 are opened, as is obvious from a schematic diagram, the compressed air enters the movable motor 5, the compressed air nozzle 4 and the auxiliary air nozzle 29 through corresponding paths, the motor 5 starts to work under the driving of the compressed air, powder in the storage bin 7 is output through the screw conveyor, the powder output by the screw conveyor cannot reach a uniform or continuous state, so that spring vibration is caused when the powder falls on the screen 25, the powder falls off from the screen 25, meanwhile, the compressed air is disturbed, the screen 25 is vibrated, the powder further falls off from the screen 25, the fallen powder is directly blown out through the discharge nozzle 3 by the compressed air nozzle 4, the auxiliary air nozzle 29 blows the falling powder again, and simultaneously disturbs the vibration of the screen 25, so as to facilitate the uniform distribution of the powder falling, and the powder is blown out directly through the discharge nozzle 3 by the compressed air nozzle 4.

Under the condition that no compressed air power source is available on site but other accessories have compressed air power sources, the purpose can be achieved by replacing the air storage cylinder 18 for flushing and air exchange, and at the moment, the pipeline connected with the air storage cylinder 18 is removed through the quick plug-in connector, so that the purpose of replacing the air storage cylinder 18 for flushing and air exchange is achieved.

In the case of a compressed air power source on site, a compressed air source can be directly introduced into the air reservoir 18 through the first quick-connect connector 13, and the other working processes are the same as described above.

The invention has the advantages of reducing labor amount, improving working efficiency and having better adaptability because the invention can be used under the condition of a compressed air power source and a non-compressed air power source, and has the advantage of stable work because the powder is conveyed by a screw conveyor and the feeding speed, the yield and the rhythm are easy to control.

Drawings

FIG. 1 is a schematic diagram of the principle of the present invention, shown in the figure:

1 is a mobile base; 2 is a mixing chamber; 3 is a discharge nozzle; 4 is a compressed air nozzle; 5 is a pneumatic motor; 6 is a speed reducer; 7 is a storage bin; 8 is a bin cover; 9 is a transmission mechanism; 10 is a pressure gauge; 11 is a safety valve; 12 is a first stop valve; 13 is a first quick-connect coupling; 14 is a second stop valve; 15 is a second quick-connect coupling; 16 is a manual air pump; 17 is a water drain valve; 18 is a compressed air cylinder; 19 is a third quick-connect coupling; 20 is a fourth quick-connect coupling; 21 is a third stop valve; 22 is a fourth stop valve; 23 is a first constant pressure regulating valve; 24 is a second constant pressure regulating valve; 25 is a screen; 26 is a spring; 27 is a cantilever lever; 28 is a screw conveyor; 29 is an auxiliary air nozzle; 30 is a partition plate; 31 is a sieve; and 32 is a flow regulating valve.

Detailed Description

The specific implementation mode of the invention is as follows with reference to the attached drawings:

the mining dual-energy powder conveying device is composed of a movable base (1) and an air storage cylinder (18) arranged on the movable base (1), wherein the air storage cylinder is arranged on the movable base (1) in a replaceable structural form, namely: the air storage cylinder (18) can be quickly fixed or quickly taken down on the movable base (1) so as to facilitate the replacement of the air storage cylinder (18) with sufficient air source under the condition that the internal air source is used up or is about to be used up, the movable base (1) is also fixedly provided with a screw conveyor (28), the axis of a screw blade of the screw conveyor (28) is in an inclined state with the horizontal plane so as to facilitate the conveying of powder on the screw conveyor with gravity and achieve the purposes of facilitating the feeding and reducing the energy consumption, the discharge port end of the screw conveyor (28) is communicated with the inner top of a mixing chamber (2), a plurality of cantilever levers (27) penetrating through the left side and the right side (or the front and the back) of the mixing chamber (2) are fixedly arranged at the upper part of the mixing chamber (2), a screen (25) is arranged in the mixing chamber (2) at the lower end of the cantilever levers (27), the screen (25) is suspended on a cantilever lever (27) through a plurality of springs (26), the enveloping surface of the screen (25) is similar to the horizontal section of the mixing chamber (2), meanwhile, the screen (25) is ensured to be positioned at the lower part of the discharge port of the screw conveyer (28) so that powder falling from the discharge port of the screw conveyer (28) can be received by the screen (25), a compressed air nozzle (4) and a discharge nozzle (3) are respectively and fixedly arranged on the front wall and the rear wall of the mixing chamber (2) at the lower part of the screen (25), the compressed air nozzle (4) and the discharge nozzle (3) are positioned on the same axis, the part of the material nozzle (3) positioned in the mixing chamber (2) is of a horn mouth-shaped structure, a clapboard (30) with through holes distributed thereon is fixedly arranged in the mixing chamber (2) at the lower parts of the compressed air nozzle (4) and the discharge nozzle (3), the air-permeable mixing device is characterized in that a fine mesh-shaped filter screen (31) is arranged on the upper plane of the partition plate (30), the filter screen (31) can be selected to ensure air permeability and prevent powder from passing through the filter screen (31), an auxiliary air nozzle (29) is fixedly arranged at the lower part of the mixing chamber (2), the auxiliary air nozzle (29) is communicated with the inside of the mixing chamber (2) at the lower end of the partition plate (30), the mixing chamber (2) is also fixed on the movable base (1), a speed reducer (6) is fixed on the shell of the spiral conveyor (28), the high-speed input end of the speed reducer (6) is connected with the output end of the pneumatic motor (5), and the low-speed output end of the speed reducer (6) is connected with a spiral vane shaft of the spiral conveyor (28) through a transmission system (9).

The air cylinder (18) on the fixed third quick connect spigot (19) that is provided with, third quick connect spigot (19) communicate with each other with third stop valve (21), first constant voltage governing valve (23) and compressed air nozzle (4) in proper order through high-pressurepipe, pass through the branch road high-pressurepipe at first constant voltage governing valve (23) exit end and link to each other with flow control valve (32) and auxiliary air nozzle (29) in proper order. A fourth quick plug connector (20) is fixedly arranged on the air cylinder (18), the fourth quick plug connector (20) is sequentially connected with a fourth stop valve (22), a second constant pressure regulating valve (24) and the air inlet end of the pneumatic motor (5) through a high-pressure air pipe, an air pressure gauge (10) is arranged on the air cylinder (18), the air pressure gauge (10) is used for displaying the air pressure in the air cylinder (18) in real time, a safety valve (11) is arranged on the air cylinder (18), the safety valve is used for achieving the effect of pressure relief and safety when the air pressure in the air cylinder (18) reaches a limit value, a first stop valve (12) is arranged on the air cylinder (18), the first stop valve (12) is connected with a first quick plug connector (13), a second stop valve (14) is arranged on the air cylinder (18), the second stop valve (14) connect in proper order with the second connects the gas outlet of inserting joint (15) and manpower air pump (16) fast through high-pressure air pipe and link to each other the minimum horizontal plane department of air receiver (18) set up one and turn on water valve (17), the effect of this valve (17) that turns on water is that regularly discharge the moisture of gathering in the compressed air, at screw conveyer (28) feed inlet end fixed storage silo (7), storage silo (7) on set up a cang gai (8).