CN210186703U - Active rotary cover multi-stage atomizing spray gun device - Google Patents

Abstract

The utility model belongs to the field of environmental protection equipment, and particularly discloses an active rotary cover multistage atomization spray gun device, which comprises a head pipe, an atomization bin and a tail pipe, wherein the head pipe is connected with the tail pipe through the atomization bin; the head pipe is provided with a spray nozzle. The atomizing storehouse includes atomizing storehouse body, atomizing disk and rotatory fan blade. An atomizing disk and a rotary fan are arranged in the atomizing bin body; the lateral wall of atomizing storehouse body is provided with the air intake, and the air intake is to atomizing storehouse internal air supply, and the rotatory fan blade of drive is rotatory. The utility model discloses set up rotatory fan blade in the atomizing storehouse, it is rotatory through the rotatory fan blade of compressed air drive, increase the striking probability of atomized water and rotatory fan blade, and further improve the speed of atomized water, fast-speed atomized water striking makes the atomized particles further reduce behind atomizing disk. Through multistage atomizing, make water smoke speed higher, the water smoke granule is littleer, has increased the spraying area of coverage, has increased the dust absorption ability of water smoke granule, has improved dust collection efficiency, has increased the dust removal scope, has reduced the water consumption.

Description

Active rotary cover multi-stage atomizing spray gun device

Technical Field

The utility model belongs to the environmental protection equipment field, concretely relates to multistage atomizing spray gun device of active rotating housing.

Background

In life and production, many places generate a large amount of dust which is diffused in air and is solid particles which can float in the air. Due to the special properties of the dust, the size of the particle size and other factors, the dust has great harm to the health of human bodies. Dust also has a great influence on industrial production, reduces the product quality and the working precision of a machine, influences the visibility of a working environment, and explodes under certain conditions. And dust with excessive concentration is discharged into the atmosphere to cause environmental pollution, so dust removal is necessary. The spray dust settling is a novel dust settling technology, and the principle is that water is atomized and sprayed into dust air, atomized water particles are small, surface tension is small, dust in the air can be adsorbed and settled, and then dust control is effectively achieved. The spraying dust settling equipment in the prior art has the disadvantages of large sprayed water particles, low dust adsorption, waste of a large amount of water, small spraying coverage area, long dust removal time and low dust removal efficiency,

accordingly, there is a need to provide an active rotating shroud multi-stage atomizing spray gun apparatus that addresses the deficiencies of the prior art discussed above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an active multistage atomizing spray gun device of rotatory cover is bigger, waste water, spraying coverage are little, the low scheduling problem of dust collection efficiency with solving present spraying apparatus spraying particle diameter at least.

In order to achieve the above object, the present invention provides the following technical solutions:

an active rotary cover multi-stage atomization spray gun device comprises a head pipe, an atomization bin and a tail pipe, wherein the head pipe is connected with the tail pipe through the atomization bin; the head pipe is provided with a spray nozzle; the tail pipe is used for receiving liquid to be atomized; the atomization bin comprises an atomization bin body, an atomization disc and a rotary fan; the atomizing disc and the rotary air vane are respectively arranged in the atomizing bin body, and the rotary air vane is positioned on one side of the atomizing disc; a plurality of through holes are formed in the atomizing disc; the lateral wall of atomizing storehouse body is provided with the air intake, the air intake to supply air in the atomizing storehouse, the drive rotatory fan blade is rotatory.

According to the active rotary cover multistage atomizing spray gun device, as a preferable scheme, two atomizing disks are arranged in the atomizing bin body; the rotary fan is positioned between the two atomizing disks. Preferably, the atomizing disk is disc-shaped, and the through holes are uniformly distributed on the atomizing disk.

As a preferable scheme, a first-stage atomizing disk is arranged between the atomizing bin and the tail pipe, and the first-stage atomizing disk divides the liquid to be atomized into trickle flows to realize preliminary atomization.

As a preferable scheme, the active multi-stage atomizing spray gun device with a rotating cover comprises: the atomizing device comprises a chassis and a plurality of branch atomizing columns arranged on the rear side surface of the chassis, wherein through holes formed in the branch atomizing columns are communicated with through holes formed in the chassis in a one-to-one correspondence mode, and the front side surface of the chassis is close to the tail pipe relative to the rear side surface. Preferably, it is a plurality of branch road atomizing post divide into central branch road atomizing post group and marginal branch road atomizing post group, the free end terminal surface of each branch road atomizing post in the central branch road atomizing post group is the plane, the free end terminal surface of each branch road atomizing post in the marginal branch road atomizing post group is the inclined plane the footpath on chassis, the height of each branch road atomizing post reduces gradually in the marginal branch road atomizing post group.

As a preferable scheme, the atomizing bin is communicated with the tail pipe through a middle pipe, and the multi-branch atomizing disk is arranged in the middle pipe.

As a preferred scheme, an air pipe is arranged between the atomizing bin and the intermediate pipe, the air pipe sprays gas into the intermediate pipe, primary atomized liquid passing through the first-stage atomizing disk is further atomized, and an interval is formed between the air pipe and branch atomizing columns of the multiple branch atomizing disks.

In the active rotary cover multistage atomizing spray gun device, preferably, the air pipe is provided with a plurality of nozzles, and the air is sprayed into the intermediate pipe through the nozzles. Preferably, the included angle between the spraying direction of the plurality of spray heads and the spraying direction of the primary atomized liquid is 45 degrees, the plurality of spray heads are positioned in the same conical surface, and the length of the plurality of spray heads is the same.

As above multistage atomizing spray gun device of active rotatory cover, as preferred scheme, the atomizing spray gun device still includes one-level atomizing pipe, one-level atomizing pipe includes pipe shaft and tube head, the tube head sets up the one end of pipe shaft, the tube head is the frustum shape, be provided with on the tube head a plurality ofly with the mounting hole that branch road atomizing post corresponds, many branch roads atomizing disk install in the tube head, the tube head sets up in the middle tube, the pipe shaft sets up in the tailpipe.

According to the active rotary cover multistage atomizing spray gun device, as a preferable scheme, a guide groove is formed in the circumferential direction of the inner wall of the atomizing bin body, a support rod is arranged at the tail end of a blade of the rotary vane, and the support rod is installed in the guide groove, so that the rotary vane rotates in the atomizing bin body.

According to the active multi-stage atomizing spray gun device with the rotary cover, as a preferable scheme, the inner wall of the atomizing bin body is provided with the wind shield, the wind shield is located on one side of the air inlet, the direction of wind entering the air inlet is changed, and the rotary wind blade is driven to rotate.

Compared with the closest prior art, the utility model provides a technical scheme has following excellent effect:

the utility model provides a multistage atomizing spray gun device of active rotatory cover passes through multistage atomizing disk, with the multistage atomizing of pressure water, it is littleer to make the atomizing granule, it carries out gas impact to the atomizing water to set up the tuber pipe at atomizing in-process, further improve atomizing water flow velocity, reduce the particle diameter of atomizing water, set up rotatory fan blade in the atomizing storehouse, it is rotatory through the rotatory fan blade of compressed air drive, increase the striking probability of atomizing water and rotatory fan blade, and further improve the speed of atomizing water, the fast-speed atomizing water striking makes the atomizing granule reduce the effect more obvious behind atomizing disk. Through multistage atomizing, multistage acceleration makes head pipe spun water smoke speed higher, and the water smoke granule is littleer, greatly increased the spraying area covered, increased the dust absorption ability of water smoke granule, improved dust collection efficiency, increased the dust removal scope, reduced the water consumption.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Wherein:

fig. 1 is a schematic view of an active rotary cover multistage atomizing spray gun device according to an embodiment of the present invention;

fig. 2 is an exploded view of an atomization chamber according to an embodiment of the present invention;

fig. 3 is a schematic view of an air duct structure according to an embodiment of the present invention;

FIG. 4 is an exploded view of the intermediate tube and the primary atomizing tube according to the embodiment of the present invention;

fig. 5 is a schematic view of a multi-branch atomizing disk according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a multi-branch atomizing disk in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of the embodiment of the present invention in which a plurality of branch atomization pipes are installed in a primary atomization pipe;

fig. 8 is an enlarged view of fig. 2 at a.

In the figure: 1. a head pipe; 2. an atomization bin; 21. an atomization bin body; 211. a guide groove; 22. an atomizing disk; 23. rotating the fan; 231. a support bar; 24. an air inlet; 25. a wind deflector; 3. a tail pipe; 4. a primary atomizing pipe; 41. a tube body; 42. a pipe head; 5. a multi-branch atomizing disc; 51. a branch atomization column; 52; a chassis; 6. an air duct; 61. a spray head; 7. an intermediate pipe.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

According to the specific embodiment of the present invention, as shown in fig. 1 to 8, the present invention provides an active rotary cover multistage atomizing spray gun device, which comprises a head pipe 1, an atomizing chamber 2 and a tail pipe 3, wherein the head pipe 1 is connected with the tail pipe 3 through the atomizing chamber 2; the head pipe 1 is provided with a spray nozzle, and the tail pipe 3 is used for receiving water to be atomized.

The atomization bin 2 comprises an atomization bin body 21, an atomization disc 22 and a rotary fan blade 23;

an atomizing disc 22 and a rotary air vane are arranged in the atomizing bin body 21, and the rotary air vane 23 is positioned on one side of the atomizing disc 22; a plurality of through holes are arranged on the atomizing disk.

The lateral wall of the atomization bin body 21 is provided with an air inlet 24, and the air inlet 24 supplies air to the atomization bin 2 to drive the rotary fan blade 23 to rotate.

When the water atomizing device is used, water enters through the tail pipe 3, the water atomizing disc 22 is passed through, high-speed water flow is divided into multiple strands of atomized water, the rotary wind vane 23 rotates under the driving of the air supply of the air inlet 24, the multiple strands of atomized water formed by dividing the atomized water by the atomizing disc 22 are driven by the rotary wind vane 23, the water mist speed is increased, the water mist particles are more refined, through two-stage atomization, the particles are refined, the water mist with the increased speed is sprayed out at a high speed through a spraying opening in the head pipe 1, the sprayed water mist particles are small, the spraying coverage area is large, the surface tension of the water mist particles is small, the dust absorption capacity of the water mist particles is increased, the dust removal efficiency is improved, the dust removal.

In order to guarantee to obtain higher water smoke jet velocity, in the embodiment of the utility model, the pipe diameter of head pipe 1, atomizing storehouse 2 and tail pipe 3 is the same, and the bore of nozzle is less than the internal diameter of head pipe 1. Specifically, the head pipe 1 and the spray nozzle are both cylindrical, the spray nozzle is in transitional connection with the head pipe 1 through a circular truncated cone, and the spray nozzle coincides with the axis of the head pipe 1.

Further, two atomizing disks 22 are arranged in the atomizing bin body 21; the rotary fan 23 is located between the two atomizing disks 22. Through setting up two atomizing disk 22, make through rotatory fan blade 23 with higher speed, the high-speed striking of water smoke that refines on atomizing disk 22, the water smoke granule further refines, and water smoke speed further improves to it is better to make this atomizing spray gun device's dust removal effect. Preferably, the atomizing disk 22 is a disk shape, and through holes are uniformly distributed on the atomizing disk 22.

Further, a first-stage atomizing disc is arranged between the atomizing bin 2 and the tail pipe 3, and the first-stage atomizing disc divides water into trickle flow to realize primary atomization. In the embodiment of the utility model, one-level atomizing disk is many branches atomizing disk 5, and many branches atomizing disk 5 includes: the atomizing device comprises a base plate 52 and a plurality of branch atomizing columns 51 arranged on the rear side surface of the base plate 52, through holes formed in the branch atomizing columns 51 are communicated with through holes formed in the base plate 52 in a one-to-one correspondence mode, and the front side surface of the base plate 52 is close to a tail pipe 3 relative to the rear side surface. A plurality of branch road atomizing post 51 divide into central branch road atomizing post group and marginal branch road atomizing post group, and each branch road atomizing post 51's free end terminal surface is the plane in the central branch road atomizing post group, and each branch road atomizing post 51's free end terminal surface is the inclined plane in the marginal branch road atomizing post group, and in the footpath of chassis 52, each branch road atomizing post 51's in the marginal branch road atomizing post group highly reduces gradually. In the embodiment of the present invention, the central branch atomizing column set includes a branch atomizing column 51, and the axis of the branch atomizing column 51 coincides with the axis of the chassis 52. The height of the branch atomizing column 51 of the center branch atomizing column group is higher than that of each branch atomizing column 51 in the edge branch atomizing columns, and the height is relative to the height of the chassis 52. Because the inclined plane of each branch road atomizing post in the marginal branch road atomizing post group is the ellipsoid, preferably, radially distributed along the ellipse has a plurality of through-hole rings, and every through-hole ring includes a plurality of through-holes, and this a plurality of through-holes are along the circumference (being oval circumference) equipartition on inclined plane. The water passes through the multi-branch atomizing disk 5 to form a plurality of atomized water flows. The end surfaces of the branch atomizing columns 51 close to the atomizing bin 2 are positioned in the same conical surface. The atomizing bin 2 is communicated with the tail pipe 3 through a middle pipe 7, and the multi-branch atomizing disc 5 is arranged in the middle pipe 7. The inner diameter of the through holes of the multi-branch atomizing disk 5 is larger than that of the through holes of the atomizing disk 22, and the number of the through holes is smaller than that of the through holes.

Further, an air pipe 6 is arranged between the atomizing bin 2 and the middle pipe 7, the air pipe 6 sprays air into the middle pipe 7, and preliminary atomized liquid passing through the primary atomizing disk is further atomized. Evenly be provided with a plurality of shower nozzles 61 on the tuber pipe 6, gaseous through shower nozzle 61 spray to the intermediate pipe 7 in, the direction of spray of a plurality of shower nozzles 61 and preliminary atomized liquid's spray direction contained angle is 45, and a plurality of shower nozzles 61 are located same conical surface, and the head of shower nozzle 61 is located same horizontal cross-section of this conical surface. The atomization device is beneficial to atomizing atomized water by concentrated wind power. Compressed gas is sprayed into the cavity formed by the intermediate pipe 7 and the atomizing bin 2 at a high speed through the spray head 61 of the air pipe 6 when in use, and strikes the primary atomized water therein, so that water mist particles are more refined, and the air and the water mist are mixed, so that the water mist speed is greatly improved. In order to install the air duct 6, a predetermined distance is arranged between the end surface of the atomizing bin 2 close to one end of the air duct 6 and the atomizing disk 22 to form a fan cover. The air duct 6 is spaced from the branch atomizing columns 51 of the multiple-branch atomizing disk 5. The utility model discloses an in the concrete embodiment, tuber pipe 6 is the ring form, and the outer wall of tuber pipe 6 is provided with the air intake, and 6 cavitys of tuber pipe, shower nozzle 61 equipartition are at the terminal surface of tuber pipe 6, and a plurality of shower nozzles 61's length is the same.

In order to facilitate the installation of many branches atomizing disk 5, in the embodiment of the utility model, the atomizing spray gun device still includes one-level atomizing pipe 4, and one-level atomizing pipe 4 includes pipe shaft 41 and tube head 42, and tube head 42 sets up the one end at pipe shaft 41, and tube head 42 is the frustum toper, is provided with a plurality of mounting holes that correspond with branch atomizing post 51 on the tube head 42, and the branch atomizing post 51 of many branches atomizing disk 5 is installed in tube head 42, and tube head 42 sets up in the intermediate tube 7, pipe shaft 41 sets up in the tail pipe 3. Because the water flow pressure intensity is larger, the pipe body 41 of the first-stage atomizing pipe 4 is arranged in the tail pipe 3, water flow enters through the pipe body 41, the compression strength is greatly increased due to the double-layer structural design, and the tail pipe 3 is prevented from being damaged due to the fact that the water flow pressure intensity is too large.

Further, a guide groove 211 is circumferentially formed in the inner wall of the atomization bin body 21, a support rod 231 is arranged at the tail end of each blade of the rotary vane 23, and the support rod 231 is installed in the guide groove 211 to enable the rotary vane 23 to rotate in the atomization bin body 21.

Furthermore, the inner wall of the atomization bin body 21 is provided with a wind shield 25, the wind shield 25 is located on one side of the air inlet 24, the wind shield 25 inclines towards the air inlet 24, the direction of the air entering from the air inlet 24 is changed, and the rotary air vane 23 is driven to rotate.

The included angle between the page of the rotating wind vane 23 and the rotating shaft of the rotating wind vane 23 is less than 30 degrees, preferably, the included angle between the page of the rotating wind vane 23 and the rotating shaft of the rotating wind vane 23 ranges from 5 degrees to 30 degrees (for example, 8 degrees, 11 degrees, 14 degrees, 17 degrees, 20 degrees, 23 degrees, 26 degrees and 29 degrees), and the wind of the wind inlet 24 drives the rotating wind vane 23 to rotate, so as to drive the water mist to impact the atomizing disc 22 at one end of the proximity head pipe 1 at high speed.

The utility model discloses an in the embodiment, select water as the atomizing object, the utility model discloses an atomizing spray gun device still is applicable to other liquid for example the mixed liquid of pesticide, medical disinfection water, insecticidal water agent etc. the utility model discloses do not limit to this.

The utility model discloses a multistage atomizing spray gun device of active rotatory cover when using, with the head pipe, the atomizing storehouse, the tuber pipe, the intermediate pipe, the tail pipe concatenates in proper order, it is sealing connection to connect the position, let in pressure water in to the pipe shaft of one-level atomizing pipe, let in compressed gas in to the tuber pipe, let in compressed gas in to the atomizing storehouse through the air intake on the atomizing storehouse body, behind pressure water passing through many branches atomizing disk, the reposition of redundant personnel becomes stranded thin rivers, under the shower nozzle spun compressed gas impact of tuber pipe, rivers and gaseous intensive mixing, the compressed gas that the tuber pipe spouts, accelerate tiny rivers in certain space, the higher impact force is big when the atomizing disk of process that the velocity of water is high, the water droplet atomizes more easily, the granule is little. Rotatory fan blade is rotatory under the drive of air intake air supply, and the drive of rotatory fan blade is down in the multi-strand atomizing water that atomizing disk reposition of redundant personnel formed, and water smoke speed increases, and the water smoke granule refines more, through multistage atomizing, makes the granule refine, the water smoke of speed increase spout at a high speed through the nozzle on the head pipe. The smaller the diameter of the sprayed mist particles, the easier the fan-shaped surface is formed during spraying, and the larger the mist coverage area relative to the large particles. The diameter is reduced, the surface tension of the water mist particles is reduced, the dust absorption capacity of the water mist particles is improved, the dust removal efficiency is improved, the dust removal range is enlarged, and the water consumption is reduced. Because the atomized water particles are very small and evaporate in the air quickly, the device can also be used as air humidifying equipment to humidify the air in a large space.

To sum up, the utility model provides an active multistage atomizing spray gun device of rotatory cover is a plurality of branches with pressure moisture through many branches of atomizing disk, improves the velocity of water, and the free end face of branch road atomizing post sets up to the inclined plane, and water is diffusion all around after many branches of atomizing disk, avoids the mutual interference of high-speed rivers and reduces the velocity of flow. Through multistage atomizing disk, with the multistage atomizing of pressure water, make the atomized particle littleer, set up the tuber pipe at atomizing in-process and carry out gas impact to the atomized water, further improve atomized water flow velocity, reduce the particle diameter of atomized water, set up rotatory fan blade in the atomizing storehouse, it is rotatory to drive rotatory fan blade through compressed air, increase the striking probability of atomized water and rotatory fan blade, and further improve the speed of atomized water, the fast-speed atomized water striking makes the atomized particle reduce the effect more obvious behind atomizing disk. Through multistage atomizing, multistage acceleration makes head pipe spun water smoke speed higher, and the water smoke granule is littleer, greatly increased the spraying area covered, increased the dust absorption ability of water smoke granule, improved dust collection efficiency, increased the dust removal scope, reduced the water consumption.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An active rotary cover multi-stage atomization spray gun device is characterized in that,

the atomizing spray gun device comprises a head pipe, an atomizing bin and a tail pipe, and the head pipe is connected with the tail pipe through the atomizing bin; the head pipe is provided with a spray nozzle; the tail pipe is used for receiving liquid to be atomized;

the atomization bin comprises an atomization bin body, an atomization disc and a rotary fan;

the atomizing disc and the rotary air vane are respectively arranged in the atomizing bin body, and the rotary air vane is positioned on one side of the atomizing disc; a plurality of through holes are formed in the atomizing disc;

the lateral wall of atomizing storehouse body is provided with the air intake, the air intake to supply air in the atomizing storehouse, the drive rotatory fan blade is rotatory.

2. The active rotating shroud multi-stage atomizing spray gun device of claim 1,

two atomizing disks are arranged in the atomizing bin body; the rotary fan is positioned between the two atomizing disks.

3. The active rotating shroud multi-stage atomizing spray gun device of claim 1,

atomizing storehouse with be provided with one-level atomizing disk between the tail pipe, one-level atomizing disk will treat the atomizing liquid reposition of redundant personnel for the trickle, realizes preliminary atomizing.

4. The active rotary shield multi-stage atomizing spray gun device of claim 3,

one-level atomizing disk is many branch circuit atomizing disk, includes: the atomizing device comprises a chassis and a plurality of branch atomizing columns arranged on the rear side surface of the chassis, wherein through holes formed in the branch atomizing columns are communicated with through holes formed in the chassis in a one-to-one correspondence mode, and the front side surface of the chassis is close to the tail pipe relative to the rear side surface.

5. The active rotating shroud multi-stage atomizing spray gun device of claim 4,

the atomizing bin is communicated with the tail pipe through an intermediate pipe, and the multi-branch atomizing discs are arranged in the intermediate pipe.

6. The active rotating shroud multi-stage atomizing spray gun device of claim 5,

the atomizing storehouse with be provided with the tuber pipe between the intermediate tube, the tuber pipe to spray gas in the intermediate tube will pass through the preliminary atomized liquid of one-level atomizing disk is further atomized, the tuber pipe with there is the interval between the branch road atomizing post of many branch road atomizing disks.

7. The active rotary shield multi-stage atomizing spray gun device of claim 6,

a plurality of spray heads are arranged on the air pipe, and air is sprayed into the middle pipe through the spray heads;

it is a plurality of the injection direction of shower nozzle is 45 with the injection direction contained angle of preliminary atomized liquid, and is a plurality of the shower nozzle is located same conical surface, and is a plurality of the length of shower nozzle is the same.

8. The active rotary shield multi-stage atomizing spray gun device of claim 7,

atomizing spray gun device still includes one-level atomizing pipe, one-level atomizing pipe includes pipe shaft and tube head, the tube head sets up the one end of pipe shaft, the tube head is the frustum shape, be provided with on the tube head a plurality of with the mounting hole that branch road atomizing post corresponds, many branch road atomizing disk install in the tube head, the tube head sets up in the middle tube, the pipe shaft sets up in the tail-pipe.

9. The active rotary cover multistage atomizing spray gun device according to claim 1, wherein a guide groove is circumferentially formed on the inner wall of the atomizing chamber body, a support rod is arranged at the tail end of a blade of the rotary vane, and the support rod is installed in the guide groove, so that the rotary vane rotates in the atomizing chamber body.

10. The active rotary cover multistage atomizing spray gun device according to claim 9, wherein a wind deflector is disposed on an inner wall of the atomizing chamber body, and the wind deflector is located on one side of the air inlet to change a direction of wind entering the air inlet and drive the rotary wind vane to rotate.

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