阅读说明：本技术 一种自动除尘装置 (Automatic dust removal device ) 是由 李欣欣 于 2021-09-10 设计创作，主要内容包括：本发明涉及一种自动除尘装置,包括气管、滤箱、支撑板、风筒和雾化喷管,支撑板放置在掘进机的俯仰臂上,气管固连在支撑板上,气管呈C形,气管底部一端向上弯折用以吸入飞尘,气管顶部一端向下弯折用于排气,滤箱固连在气管底部,滤箱与气管相通,若干个雾化喷管间隔固连在滤箱一侧,雾化喷管与滤箱相通以将空气中的飞尘冲入滤箱内,风筒固连在气管顶部端口处以使气管内气体从底部向顶部流动,本发明具有能够吸入飞扬的煤尘并进行水滤,既能减少降尘水的用量,又能最大化降低飞尘对除尘设备的损伤的优点。(The invention relates to an automatic dust removal device, which comprises an air pipe, a filter box, a support plate, an air cylinder and atomizing spray pipes, wherein the support plate is placed on a pitching arm of a heading machine, the air pipe is fixedly connected to the support plate, the air pipe is C-shaped, one end of the bottom of the air pipe is bent upwards to suck flying dust, one end of the top of the air pipe is bent downwards to exhaust, the filter box is fixedly connected to the bottom of the air pipe, the filter box is communicated with the air pipe, a plurality of atomizing spray pipes are fixedly connected to one side of the filter box at intervals, the atomizing spray pipes are communicated with the filter box to flush the flying dust in the air into the filter box, and the air cylinder is fixedly connected to a port at the top of the air pipe to enable the air in the air pipe to flow from the bottom to the top.)

1. The utility model provides an automatic dust collector which characterized in that: the air pipe type dust collector comprises an air pipe (1), a filter box (2), a supporting plate (3), an air duct (4) and an atomizing spray pipe (5), wherein the supporting plate (3) is placed on a pitching arm (61) of the heading machine, the air pipe (1) is fixedly connected onto the supporting plate (3), the air pipe (1) is C-shaped, one end of the bottom of the air pipe (1) is bent upwards to suck flying dust, one end of the top of the air pipe (1) is bent downwards to exhaust the flying dust, the filter box (2) is fixedly connected to the bottom of the air pipe (1), the filter box (2) is communicated with the air pipe (1), the atomizing spray pipes (5) are fixedly connected to one side of the filter box (2) at intervals, the atomizing spray pipes (5) are communicated with the filter box (2) to flush the flying dust in the air into the filter box (2), and the air duct (4) is fixedly connected to a port of the top of the air pipe (1) to enable the air in the air pipe (1) to flow from the bottom to the top.

2. An automatic dust removing device according to claim 1, wherein: the bottom port of the air pipe (1) is fixedly connected with a horn-shaped open pipe (11), and the included angle between the length direction of the open pipe (11) and the horizontal direction is an obtuse angle.

3. An automatic dust removing device according to claim 1, wherein: a plurality of first reversing plates (21) and second reversing plates (22) are fixedly connected in the filter box (2) at intervals along the gas flowing direction, the widths of the first reversing plates (21) and the second reversing plates (22) are smaller than the width of the filter box (2), the first reversing plates (21) are fixedly connected to one side of the inner wall of the filter box (2), the second reversing plates (22) are fixedly connected to the other side of the inner wall of the filter box (2), the second reversing plates (22) are located between the adjacent first reversing plates (21), and the filter box (2) is divided into a plurality of air cavities (24) by the first reversing plates (21) and the second reversing plates (22) so that the gas flows in a snake shape between the air cavities (24); the atomizing nozzle (5) is positioned on the filter box (2) between the first reversing plate (21) and the second reversing plate (22).

4. An automatic dust removing device according to claim 3, characterized in that: a water cavity (25) is arranged at one side of the filter box (2) and positioned at the bottom of the second reversing plate (22), the water cavity (25) is communicated with the air cavity (24), and the top end of the water cavity (25) is connected with the bottom of the second reversing plate (22); the filter boxes (2) at the bottoms of the first reversing plate (21) and the second reversing plate (22) are provided with inclined plates (23), and the inclined plates (23) incline towards the water cavity (25).

5. An automatic dust removing device according to claim 4, wherein: a water level pipe (26) is arranged on one side of the filter box (2), and the water level pipe (26) is positioned at the joint of the top of the water cavity (25) and the second reversing plate (22); a slag discharge channel (27) is arranged on the filter box (2) at one side of the bottom of the water cavity (25), and the slag discharge channel (27) is communicated with the water cavity (25).

6. An automatic dust removing device according to claim 1, wherein: dryer (4) are including shell (41), dustproof motor (42), reduction gear (43) and spiral shell (44), shell (41) link firmly in trachea (1) top port, dustproof motor (42) link firmly outside shell (41), reduction gear (43) link firmly in shell (41), dustproof motor (42) output rotates with reduction gear (43) input to be connected, spiral shell (44) rotate to be connected at reduction gear (43) output, spiral shell (44) are rotatory so that trachea (1) interior air flow.

7. An automatic dust removing device according to claim 6, wherein: the cylinder shell (41) is cylindrical, the length direction of the cylinder shell (41) and the length direction of the top of the air pipe (1) form an acute angle, and the outer diameter of the cylinder shell (41) is larger than that of the air pipe (1).

8. An automatic dust removing device according to claim 1, wherein: the length direction of the supporting plate (3) is vertical to the length direction of the pitching arm (61), the top of the air pipe (1) is abutted against the top end face of the supporting plate (3), a semi-annular hoop (38) is sleeved outside the air pipe (1), the inner wall face of the hoop (38) is abutted against the outer wall face of the air pipe (1), and two ends of the hoop (38) are fixedly connected to the supporting plate (3); the bottom of the supporting plate (3) is fixedly connected with a connecting frame (32), and the connecting frame (32) is fixedly connected with the top of the filter box (2).

9. An automatic dust removing device according to claim 8, wherein: the supporting plate (3) is positioned on two sides of the pitching arm (61) and is spliced with mounting columns (33), the bottoms of the mounting columns (33) are fixedly connected with supporting sheets (37), the outer diameter of each supporting sheet (37) is larger than that of each mounting column (33), strip-shaped bottom plates (34) are spliced on the mounting columns (33), the bottom end faces of the bottom plates (34) abut against the supporting sheets (37), and the top end faces of the bottom plates (34) abut against the bottom end faces of the pitching arm (61); the top end of the mounting column (33) penetrates through the support plate (3), the part of the mounting column (33) extending out of the support plate (3) is sleeved with a pad column (35), the pad column (35) abuts against the top end face of the support plate (3), the top of the pad column (35) abuts against a nut (36), and the nut (36) is in threaded connection with the mounting column (33).

10. An automatic dust removing device according to claim 9, wherein: a bottom pad (39) is arranged between the supporting plate (3) and the pitching arm (61), the bottom pad (39) is made of rubber, and the bottom end surface is a horn mouth.

Technical Field

The invention relates to the technical field of mine equipment, in particular to an automatic dust removal device.

Background

Coal dust in a coal mine affects the safety production of the mine, threatens the physical health of workers and is one of five disasters of the coal mine. For most mines, it is still difficult to achieve the concentrations allowed in the coal mine safety regulations. How to effectively control the coal dust and further stop the coal dust explosion is an important target of coal mine safety production, and has great significance in the aspect of guaranteeing the physical health of workers.

At present, the application of a high-power heading machine in a coal mine is more and more extensive, coal dust excited by the heading machine in the operation process is very large, and a common spraying device of the heading machine is used for removing dust and reducing dust. The spraying device of the development machine is divided into an inner spraying device and an outer spraying device, the inner spraying device sprays dust fall to coal bodies through a nozzle on a cutting structure of the development machine, and dust removal is carried out when coal dust is generated. The outer spraying device is arranged on a cutting arm of the development machine and used for catching and dedusting flying coal dust. Due to poor water quality and insufficient water pressure of a working surface, a nozzle of the spraying device of the unit is easy to block, and the dust removal effect is seriously weakened.

Therefore, in view of the above disadvantages, it is desirable to provide an automatic dust removing device.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the technical problems of poor dust removal effect and short service time of the conventional dust removal device.

(II) technical scheme

In order to solve the technical problem, the invention provides an automatic dust removal device which comprises an air pipe, a filter box, a supporting plate, an air cylinder and an atomizing spray pipe, wherein the supporting plate is placed on a pitching arm of a heading machine, the air pipe is fixedly connected to the supporting plate, the air pipe is in a C shape, one end of the bottom of the air pipe is bent upwards to suck flying dust, one end of the top of the air pipe is bent downwards to exhaust the flying dust, the filter box is fixedly connected to the bottom of the air pipe, the filter box is communicated with the air pipe, the atomizing spray pipes are fixedly connected to one side of the filter box at intervals, the atomizing spray pipes are communicated with the filter box to flush the flying dust in the air into the filter box, and the air cylinder is fixedly connected to a port at the top of the air pipe to enable the air in the air pipe to flow from the bottom to the top.

As a further explanation of the present invention, preferably, a trumpet-shaped open pipe is fixedly connected to the bottom port of the air pipe, and an included angle between the length direction of the open pipe and the horizontal direction is an obtuse angle.

As a further explanation of the present invention, preferably, a plurality of first reversing plates and second reversing plates are fixedly connected in the filter box at intervals along the gas flowing direction, the widths of the first reversing plates and the second reversing plates are both smaller than the width of the filter box, the first reversing plates are fixedly connected to one side of the inner wall of the filter box, the second reversing plates are fixedly connected to the other side of the inner wall of the filter box, the second reversing plates are located between the adjacent first reversing plates, and the filter box is divided into a plurality of air cavities by the first reversing plates and the second reversing plates, so that the gas flows in a serpentine shape between the air cavities; the atomizing spray pipe is positioned on the filter box between the first reversing plate and the second reversing plate.

As a further explanation of the present invention, preferably, a water cavity is provided at one side of the filter box at the bottom of the second reversing plate, the water cavity is communicated with the air cavity, and the top end of the water cavity is connected with the bottom of the second reversing plate; the filter boxes at the bottoms of the first reversing plate and the second reversing plate are provided with inclined plates which incline towards the direction of the water cavity.

As a further explanation of the present invention, preferably, a water level pipe is arranged at one side of the filter box, and the water level pipe is located at the joint of the top of the water cavity and the second reversing plate; the filter box at one side of the bottom of the water cavity is provided with a slag discharge channel which is communicated with the water cavity.

As a further description of the present invention, preferably, the air duct includes a cylindrical shell, a dustproof motor, a speed reducer and a rotary vane, the cylindrical shell is fixedly connected to the top port of the air duct, the dustproof motor is fixedly connected to the outside of the cylindrical shell, the speed reducer is fixedly connected to the inside of the cylindrical shell, the output end of the dustproof motor is rotatably connected to the input end of the speed reducer, the rotary vane is rotatably connected to the output end of the speed reducer, and the rotary vane rotates to make the air in the air duct flow.

As a further explanation of the present invention, it is preferable that the cylindrical shell is cylindrical, a length direction of the cylindrical shell and a length direction of the top of the air tube form an acute angle, and an outer diameter of the cylindrical shell is larger than an outer diameter of the air tube.

As a further explanation of the present invention, preferably, the length direction of the support plate is perpendicular to the length direction of the pitching arm, the top of the air tube abuts against the top end face of the support plate, a semi-annular hoop is sleeved outside the air tube, the inner wall face of the hoop abuts against the outer wall face of the air tube, and two ends of the hoop are fixedly connected to the support plate; the bottom of the supporting plate is fixedly connected with a connecting frame which is fixedly connected with the top of the filter box.

As a further explanation of the present invention, preferably, the supporting plate is inserted with mounting posts at two sides of the pitching arm, the bottom of the mounting post is fixedly connected with a supporting piece, the outer diameter of the supporting piece is larger than the outer diameter of the mounting post, the mounting post is inserted with a strip-shaped bottom plate, the bottom end face of the bottom plate abuts against the supporting piece, and the top end face of the bottom plate abuts against the bottom end face of the pitching arm; the backup pad is run through on the erection column top, and the part that the erection column stretches out outside the backup pad has cup jointed the pad post, and the pad post butt has the nut at backup pad top end face, pad post top butt, nut and erection column threaded connection.

As a further description of the present invention, it is preferable that a bottom pad is disposed between the supporting plate and the pitching arm, the bottom pad is made of rubber, and the bottom end surface is a bell mouth.

(III) advantageous effects

The technical scheme of the invention has the following advantages:

according to the invention, by designing a novel dust removal structure and adopting a mode of directly mounting on the heading machine, the heading machine is not damaged, and the disassembly and the assembly are convenient. And under the dual function of wind suction water filter, compare original direct water spray's mode, can practice thrift the use of dust removal water, can improve dust collection efficiency again, the later stage still can be deposited the coal bunker with inspiratory buggy after dry to avoid extravagant.

Drawings

FIG. 1 is a diagram of the overall assembly effect of the present invention;

FIG. 2 is a view showing an installation position of the dust removing device of the present invention;

FIG. 3 is a side view of the dust extraction apparatus of the present invention;

FIG. 4 is a cross-sectional view of a filter box of the present invention;

FIG. 5 is a view of the mounting location of the atomizing nozzle of the present invention;

fig. 6 is a structure view of an air duct of the present invention.

In the figure: 1. an air tube; 11. an open tube; 2. a filter box; 21. a first reverser plate; 22. a second reverser plate; 23. a sloping plate; 24. an air cavity; 25. a water chamber; 26. a water level pipe; 27. a slag discharge channel; 3. a support plate; 31. an adjusting plate; 32. a connecting frame; 33. mounting a column; 34. a base plate; 35. a cushion column; 36. a nut; 37. a support sheet; 38. a hoop; 39. a bottom pad; 4. an air duct; 41. a cartridge housing; 42. a dust-proof motor; 43. a speed reducer; 44. rotating leaves; 5. an atomizing nozzle; 6. a heading machine body; 61. a pitch arm; 62. a cutting head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The utility model provides an automatic dust collector, combine figure 1, figure 2 and figure 5, including trachea 1, filter box 2, backup pad 3, dryer 4 and atomizing spray tube 5, backup pad 3 is placed on every single move arm 61 of entry driving machine 6, trachea 1 links firmly in backup pad 3, 1 bottom one end of trachea is upwards buckled and is used for inhaling the flying dust, 1 top one end of trachea is buckled downwards and is used for the exhaust, filter box 2 links firmly in trachea 1 bottom, filter box 2 communicates with each other with trachea 1, a plurality of atomizing spray tube 5 interval links firmly in filter box 2 one side, atomizing spray tube 5 communicates with each other with filter box 2 in order to wash the flying dust in the air into filter box 2, dryer 4 links firmly in 1 top port of trachea so that gas in the trachea 1 flows from the bottom to the top.

With reference to fig. 2 and 6, the supporting plate 3 is a square steel plate, the length direction of the supporting plate 3 is perpendicular to the length direction of the pitching arm 61, the adjusting plate 31 is further placed on the pitching arm 61, the adjusting plate 31 has the same structure as the supporting plate 3, and the adjusting plate 31 and the supporting plate 3 are arranged at intervals. The top of the trachea 1 is abutted against the top end faces of the support plate 3 and the adjusting plate 31, a semi-annular hoop 38 is sleeved outside the trachea 1, the inner wall face of the hoop 38 is abutted against the outer wall face of the trachea 1, and two ends of the hoop 38 are fixedly connected to the support plate 3 or the adjusting plate 31. Set up regulating plate 31 and support plate 3 and support trachea 1 jointly to play stable fixed effect, and do not have between regulating plate 31 and the support plate 3 and be connected, make the position that can adjust regulating plate 31 before installation trachea 1 at will, so that the different entry driving machine of this device ability adaptation. All be equipped with the heelpiece 39 between backup pad 3 and regulating plate 31 and the every single move arm 61, heelpiece 39 is rubber material and the bottom face is the horn mouth, both can increase backup pad 3 and regulating plate 31 and every single move arm 61's contact friction, can avoid regulating plate 31 and backup pad 3 fish tail every single move arm 61 again.

With reference to fig. 2 and 6, the bottom of the supporting plate 3 is fixedly connected with a connecting frame 32, and the connecting frame 32 is fixedly connected with the top of the filtering box 2, so that the filtering box 2 is fixed on the supporting plate 3. The supporting plate 3 and the adjusting plate 31 are positioned on two sides of the pitching arm 61 and are respectively inserted with a mounting column 33, the bottom of the mounting column 33 is fixedly connected with a supporting sheet 37, the outer diameter of the supporting sheet 37 is larger than that of the mounting column 33, the mounting column 33 is inserted with a strip-shaped bottom plate 34, the bottom end face of the bottom plate 34 abuts against the supporting sheet 37, and the top end face of the bottom plate 34 abuts against the bottom end face of the pitching arm 61; the top end of the mounting column 33 penetrates through the support plate 3, a pad column 35 is sleeved on the part, extending out of the support plate 3, of the mounting column 33, the outer diameter of the pad column 35 is larger than that of the mounting column 33, the pad column 35 abuts against the top end face of the support plate 3, a nut 36 abuts against the top of the pad column 35, the nut 36 is in threaded connection with the mounting column 33, the pad column 35 is arranged to reduce friction between the nut 36 and the support plate 3 and the adjusting plate 31 when the nut 36 is screwed, and the friction degree of a port is reduced; and the nut 36 can be protruded out of the pitching arm 61, so that the worker can conveniently use a tool to rotate the nut 36 for pre-tightening, and the problem that the nut 36 is abutted on the support plate 3 to reduce the operable space and increase the pre-tightening difficulty is avoided. Through adopting bottom plate 34 and backup pad 3 or regulating plate 31 cooperation centre gripping every single move arm 61 to be used for fixed trachea 1, need not to carry out the structural transformation to every single move arm 61, reduce the assembly degree of difficulty and need not to carry out destructive transformation to the entry driving machine, cooperation heelpiece 39 enables parts such as trachea 1 and stably fixes on every single move arm 61, and the practicality is strong.

Referring to fig. 1 and 3, the air pipes 1 are C-shaped steel pipes, the two air pipes 1 are respectively arranged on two sides of the pitching arm 61, the upper and lower pipe orifices of the air pipes 1 are located at the rear end of the cutting head 62, and the upper and lower pipe orifices of the air pipes 1 are not located on the same vertical plane, so that discharged air is prevented from being sucked into the air pipes 1 again to form a dead cycle, and the influence on the absorption of external pulverized coal is avoided. A horn-shaped open pipe 11 is fixedly connected to the bottom port of the air pipe 1, and an included angle between the length direction of the open pipe 11 and the horizontal direction is an obtuse angle; the open pipe 11 is arranged for sucking the coal dust raised by the cutting head 62 in a wider range, and the obtuse angle structure enables the sucking direction to be directed to the working area of the cutting head 62, so that the upward flying coal dust can be finely reduced to achieve the dust-settling effect, and the coal dust can be sucked in a wider range to achieve the dust-removing effect.

With reference to fig. 2, 4 and 5, the filter box 2 is a square steel casing, the filter box 2 is welded in the middle of the lower end of the gas pipe 1, a plurality of first reversing plates 21 and second reversing plates 22 are fixedly connected in the filter box 2 at intervals along the gas flowing direction, preferably two first reversing plates 21 and one second reversing plate 22 are selected, wherein the first reversing plate 21 is in a right trapezoid shape, and the second reversing plate 22 is in a corner-lacking quadrangle shape. The filter box 2 is arranged under the air pipe 1, the inclined plate 23 is arranged under the air pipe 1, the end face of the inclined plate 23 is inclined, and the first reversing plate 21 and the second reversing plate 22 are both connected with the inclined plate 23. The area of the second reversing plate 22 is larger than that of the first reversing plate 21, the width of the first reversing plate 21 and the width of the second reversing plate 22 are smaller than that of the filter box 2, the first reversing plate 21 is fixedly connected to the inner side wall of the inner cavity of the filter box 2, the second reversing plate 22 is fixedly connected to the outer side wall of the inner cavity of the filter box 2, the second reversing plate 22 is located between the adjacent first reversing plates 21, the first reversing plate 21 and the second reversing plate 22 are abutted to the top end face of the filter box 2, and then the first reversing plate 21 and the second reversing plate 22 separate the filter box 2 into a plurality of air cavities 24, so that the air can flow in a snake shape between the air cavities 24. One side of the filter box 2 is provided with a water cavity 25 at the bottom of the second reversing plate 22, the water cavity 25 is communicated with the air cavity 24, the top end of the water cavity 24 is connected with the bottom of the second reversing plate 22, and the inclined plate 23 inclines towards the water cavity 24.

Referring to fig. 4 and 5, a water level pipe 26 is disposed at one side of the filter box 2, and the water level pipe 26 is located at a joint of the top of the water cavity 25 and the second direction changing plate 22; the filter box 2 at one side of the bottom of the water cavity 25 is provided with a slag discharge channel 27, and the slag discharge channel 27 is communicated with the water cavity 25. The atomizing nozzle 5 is positioned on the filter box 2 between the first reversing plate 21 and the second reversing plate 22, and a water supply pipe is connected outside the atomizing nozzle 5 and used for supplying pressure water to the atomizing nozzle 5.

Before dust removal, the atomizing spray pipe 5 is firstly opened to introduce filtered water into the filter box 2, the slag discharge channel 27 is closed to enable the water cavity 25 to start water storage, and the air duct 4 is opened after the water surface rises to the pipe orifice of the water level pipe 26. The air in the air pipe 1 flows with the outside through the air duct 4, at the moment, the outside air together with the pulverized coal is sucked into the bottom of the air pipe 1, at the moment, the air firstly enters the filter box 2, under the blockage of the water stored in the first reversing plate 21, the second reversing plate 22 and the water cavity 25, the air flows in a snake shape at the top of the filter box 2, the atomized water sprayed by the atomizing nozzle 5 peels off the coal dust mixed in the flowing air from the air, the water drops wrap the coal dust to increase the weight of the coal dust, and the coal dust falls on the inclined plate 23, even make the buggy attached on first reversing plate 21 or second reversing plate 22 because of air flow rate is too fast, along with attached volume increase and the reversing plate surface is smooth, also can fall down on swash plate 23 or be spouted to water cavity 25 top because of gravity increases, finally all can fall to water cavity 24 in the action of gravity, realize the separation of gas and solid to inhale the buggy to filter box 2 in, reach dust removal effect.

In addition, after the coal dust falls into the water storage in the water cavity 25, the particles with larger particle sizes and heavy particles sink to the bottom of the water cavity 25, the particles with smaller particle sizes and light particles float on the water storage, after the water surface height overflows the water level pipe 26, the water level pipe 26 is opened, the water in the water cavity 25 is discharged out of the filter box 2, at the moment, the coal dust floating on the water surface also flows out of the water cavity 25 along with the water, the phenomenon that the flowing air is brought out of the coal dust again due to excessive deposition is avoided, the cleanliness of the water storage in the water cavity 25 is further kept, and the newly-entered coal dust can be accommodated again. When the water level is lowered, the valve of the water level pipe 26 is closed again, and the water level pipe 26 keeps the dynamic opening and closing process because the atomizing nozzle 5 continuously sprays water. Can avoid filter box 2 interior water yield too much influence air flow, can avoid the water level again to hang down excessively and make the air flow to filter box 2 exit end from the space between the surface of water and second reversing plate 22 bottom, the guarantee has the air of buggy can stay longer time in filter box 2, and then improves dust removal effect. After dust removal is finished, the air duct 4 and the atomizing spray pipe 5 are closed, the slag discharge channel 27 is opened to enable stored water to flow out of the filter box 2, at the moment, the flowing stored water can carry out partial deposited coal dust particles, a certain automatic cleaning effect can be achieved, finally, residual deposited coal dust is scraped out of the slag discharge channel 27 through devices such as a bent rod and the like, the residual deposited coal dust and the coal dust discharged from the water level pipe 26 are sent into a drying area to be dried, and the dried coal dust can be sent to a warehouse or an aboveground boiler room to be subjected to thermal power heat supply and the like, so that waste is reduced.

Referring to fig. 2 and 6, the air passing through the filter box 2 is substantially clean and then flows to the air duct 4 through the air pipe 1. The air duct 4 comprises a duct shell 41, a dustproof motor 42, a speed reducer 43 and a rotary vane 44, wherein the duct shell 41 is cylindrical, the duct shell 41 is fixedly connected to the top end of the air duct 1, the length direction of the duct shell 41 and the length direction of the top of the air duct 1 form an acute angle, and the outer diameter of the duct shell 41 is larger than that of the air duct 1, so that the duct shell 41 can fix the speed reducer 43 and the dustproof motor 42 and can ensure that a large air volume is output to maintain normal flow of air in the air duct 1. Dustproof motor 42 links firmly outside barrel casing 41, reduction gear 43 links firmly in barrel casing 41, dustproof motor 42 output rotates with reduction gear 43 input and is connected, vane 44 rotates and connects at reduction gear 43 output, drive through dustproof motor 42 makes vane 44 rotatory so that air flow in the trachea 1, the buggy that can fly to raise blows downwards and reduces the raise dust and produces, can utilize filter box 2 to collect the buggy again, compare current only mode that relies on water spray dust fall, the waste of water resource has been reduced promptly, improve the utilization ratio of raise dust buggy again, cover the circumstances of falling to the ground back and silt mixing and producing waste by the reduction.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.