CN111420496A

CN111420496A - Concrete factory district sprays dust fall system

Info

Publication number: CN111420496A
Application number: CN202010318503.9A
Authority: CN
Inventors: 吴昊
Original assignee: Renshou Xuyu Commercial Concrete Co ltd
Current assignee: Renshou Xuyu Commercial Concrete Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-07-17
Anticipated expiration: 2040-04-21
Also published as: CN111420496B

Abstract

The invention relates to a spraying dust-settling system for a concrete plant, which comprises a water pump and an atomizing spray head, wherein a water inlet of the water pump is externally connected with a water source, a water outlet of the water pump is connected with a water pipe, the atomizing spray head is arranged on the top wall of an enclosure and is communicated with the water pipe, a water outlet of the atomizing spray head faces the inner side of the enclosure, one side of the atomizing spray head, which is close to the inner side of the enclosure, is provided with a fan, a mist outlet end of the atomizing spray head faces an air inlet end of the fan, and the enclosure is provided with a. When the mist spray humidification is carried out in a concrete plant area, the atomizing nozzle generates fine mist, the fan is driven to rotate, the fine mist is blown to the middle of the plant area, then the wind speed of the fan is driven to change in a reciprocating mode, and the distance of the sprayed fine mist pushed out by wind power changes back and forth, so that the coverage range of the mist is expanded under the condition that the mist output amount of the atomizing nozzle is not changed.

Description

Concrete factory district sprays dust fall system

Technical Field

The invention relates to the technical field of spraying dust suppression, in particular to a concrete factory spraying dust suppression system.

Background

The concrete production plant moves back and forth in the field due to the fact that a large number of sand-stone vehicles, cement vehicles and concrete vehicles are available, firstly, the sanitation of the field is easily polluted, and secondly, dust is easily brought up, so that the atmosphere is polluted. Therefore, a spraying dust-settling system is usually matched in a concrete production plant area to ensure that a field and a road in the plant area are kept moist at any time and prevent health influence on workers in the plant area.

Chinese patent No. CN209494226U discloses an automatic spraying dust-settling system, which comprises a water tank, a water pump, a water pumping pipe, a water delivery pipe and an installation pipeline; the opening of the water tank is upward and arranged on one side of the enclosing wall, the installation pipeline is arranged at the top end of the enclosing wall, and the two ends of the installation pipeline are closed; one end of the water pumping pipe extends into the water tank, and the other end of the water pumping pipe is connected with a water inlet of the water pump; one end of the water supply pipe is connected with the water outlet of the water pump, and the other end of the water supply pipe is communicated with the installation pipeline; the water pump sets up between basin and enclosure, is connected with a plurality of on the lateral wall of installation pipeline and is used for deviating from the atomising head of one side water spray of basin to the enclosure.

The above prior art solutions have the following drawbacks: because concrete factory area is great, and the atomising head generally installs on the enclosure at factory edge, and the spraying range of atomising head is limited, can only satisfy the dust fall requirement of factory edge region generally, and to the factory middle part, the spraying is difficult to cover, and the dust fall effect is relatively poor, improves the spraying coverage through the inflow that increases the atomising head, can cause water resource consumption to increase again, makes the partial region humidity in factory exceed standard easily again simultaneously, brings the unstable factor to the road surface structure, needs to propose the improvement.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a concrete plant area spraying dust-settling system which has the advantages of improving the spray coverage rate in a plant area and improving the dust-settling effect in the plant area.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a concrete factory sprays dust fall system, includes water pump and atomizer, the external water source of water inlet of water pump, atomizer sets up on the enclosure roof, atomizer is provided with a plurality ofly along enclosure length direction interval, the delivery port of water pump is connected with the water pipe, the water pipe is fixed to be set up on the enclosure, the water pipe communicates with atomizer's water inlet, atomizer's delivery port level is inboard towards the enclosure, atomizer is close to one side of enclosure inboard and is provided with the fan, atomizer's play fog end is towards the air inlet end of fan, the air-out end level of fan is inboard towards the enclosure, be provided with on the enclosure and be used for ordering about fan pivoted drive arrangement, be provided with the adjusting device who is used for reciprocating regulation fan wind speed on the enclosure.

Through adopting above-mentioned technical scheme, when constructor carries out the spraying humidification to the concrete factory in the district, open the water pump, it leads to water to the atomizer on the enclosure, produce thin water smoke by the atomizer, then, open drive arrangement, order about the fan and rotate, produce wind-force through the fan and blow thin water smoke to the factory middle part, then, open adjusting device again, order about the wind speed reciprocating variation of fan, thereby make atomizer spun thin water smoke make a round trip to change by the distance that wind-force released, thereby make atomizer under the unchangeable condition of fog volume, the coverage of water smoke has been enlarged, the coverage of water smoke in the factory has been improved, the dust fall is effectual.

The present invention in a preferred example may be further configured to: the fan sets up the swivel becket in the mounting bracket including the mounting bracket that sets firmly on the enclosure with rotating, the swivel becket is coaxial with atomizer's play fog hole, radially be provided with the flabellum along the swivel becket on the inner wall of swivel becket, flabellum length is less than the swivel becket radius.

Through adopting above-mentioned technical scheme, set up the flabellum of fan into the outer wall circumference setting along cylindric rotating-ring, reserve the middle part space of rotating-ring, make atomizer spun water smoke just to the middle part of rotating-ring to make water smoke pass through from rotating-ring middle part space smoothly, effectively reduce water smoke and pass through the resistance that the fan in-process received, further improve fan propelling movement water smoke distance.

The present invention in a preferred example may be further configured to: the driving device comprises a first motor, a gear and a gear ring, the gear ring is coaxially and fixedly arranged on the outer wall of the rotating ring, the first motor is fixedly arranged on the mounting frame, the gear is coaxially and fixedly connected with an output shaft of the first motor, and the gear is meshed with the gear ring.

Through adopting above-mentioned technical scheme, after constructor opened atomizer, open first motor, first motor drives the gear and rotates, and rethread gear and ring gear meshing transmission drive the swivel becket and rotate to make the interior flabellum of swivel becket produce wind-force, propelling movement water smoke.

The present invention in a preferred example may be further configured to: adjusting device includes contact dish, friction roller, carousel and driving piece, contact dish coaxial sleeve establishes on the outer wall of swivel becket, the carousel rotates and sets up on the enclosure, the axis of carousel is mutually perpendicular with the axis of swivel becket, the friction roller rotates and sets up in the carousel near the quotation of swivel becket, the axis of friction roller intersects perpendicularly in the axis of carousel, the lateral wall of friction roller contacts with the lateral wall of contact dish, the driving piece is used for ordering about the carousel and rotates.

By adopting the technical scheme, when the rotating process is started on the rotating ring, a constructor drives the rotating disc to rotate by starting the driving piece, in the horizontal rotating process of the rotating disc, the friction roller on the rotating disc is always in contact with the outer wall of the contact disc on the rotating ring, when the axis of the friction roller is parallel to the axis of the rotating ring, the resistance borne by the rotating ring is minimum, the rotating speed reaches the fastest speed, the water mist is pushed out to be farthest, in the process that the rotating disc rotates to the state that the axis of the friction roller is perpendicular to the axis of the contact disc, the friction force is generated between the friction roller and the contact disc and is gradually increased, the rotating ring rotating speed is reduced, the pushing distance to the water mist is reduced, in the continuous rotating process of the rotating disc, the rotating speed of the rotating ring is continuously changed, the water mist pushing distance of the atomizing nozzle is changed back and forth.

The present invention in a preferred example may be further configured to: the carousel level sets up, the eccentric rotation is connected with the connecting rod on the diapire of carousel, the connecting rod sets up along enclosure length direction, a plurality of carousels that are the straight line and arrange on connecting rod and the enclosure are connected simultaneously.

Through adopting above-mentioned technical scheme, when a carousel on the enclosure rotated, can drive a plurality of carousels on the enclosure and rotate simultaneously through the connecting rod, can effectively save driving cost.

The present invention in a preferred example may be further configured to: the driving part is a second motor which is fixedly arranged on the enclosure, a driving disc is horizontally and rotatably arranged on the top wall of the enclosure, an output shaft of the second motor is coaxially and fixedly connected to the top surface of the driving disc, and the bottom wall of the driving disc is eccentrically connected with the connecting rod.

By adopting the technical scheme, the rotating speed of the corresponding rotating ring is changed, and the use is convenient.

The present invention in a preferred example may be further configured to: the friction roller comprises a rotating roller and a friction sleeve, the friction sleeve is coaxially sleeved on the rotating roller, and the rotating roller and the turntable are detachably mounted.

Through adopting above-mentioned technical scheme, after the friction cover wearing and tearing on the live-rollers, constructor through pulling down the live-rollers from the carousel, takes off the friction cover again and changes from the live-rollers, makes the frictional resistance of live-rollers to the swivel becket exist all the time, convenient to use.

The present invention in a preferred example may be further configured to: be provided with the axis of rotation on atomizer's the outer wall, the axis of rotation is on a parallel with the length direction of enclosure, the support frame has set firmly on the roof of enclosure, the both ends of axis of rotation are rotated and are connected on the support frame, be provided with the locating part that is used for fixed atomizer on the support frame.

Through adopting above-mentioned technical scheme, constructor makes atomizer's play fog mouth outwards through rotating atomizer, can spray the dust fall to the peripheral road in factory, further improves dust fall effect.

The present invention in a preferred example may be further configured to: the locating part is the bolt, set up the perforation with bolt looks adaptation on the support frame, the otic placode has set firmly on atomizer's the outer wall, set up the pinhole with perforation looks adaptation on the otic placode, the otic placode is provided with two along atomizer circumference even interval.

Through adopting above-mentioned technical scheme, when constructor rotated atomizer to go out the fog mouth level inwards or outwards, pinhole on the atomizer otic placode aligns with the perforation on the support frame, and constructor is passing perforation and pinhole with the bolt, can be fixed atomizer convenient to use.

The present invention in a preferred example may be further configured to: the mounting bracket includes the mount with enclosure fixed connection and slides the adjustable shelf that sets up at the mount top along vertical direction, the swivel becket rotates and sets up on the adjustable shelf, the mount is improved level and is seted up threaded hole, the screw hole is provided with two along vertical direction interval, be provided with the through-hole with screw hole looks adaptation on the adjustable shelf, when the through-hole aligns with the lower position screw hole, friction roller and contact disc contact, wear to be equipped with the bolt in the through-hole, bolt and screw hole threaded connection.

Through adopting above-mentioned technical scheme, constructor rotates atomizer towards the outer back of enclosure, can untie the bolt of fixed mount and adjustable shelf, goes up the adjustable shelf, makes contact disc and friction roller separation, and it is fixed with adjustable shelf and mount to reuse the bolt to make the rotating ring and the friction roller separation that matches with the atomizer outside the enclosure, thereby effectively avoid the friction cover to act all the time, extension friction cover life.

In summary, the invention includes at least one of the following beneficial technical effects:

1. when a constructor carries out spraying humidification on a concrete plant area, a water pump is started, an atomizing nozzle generates fine water mist, then a fan is driven to rotate to blow the fine water mist to the middle part of the plant area, and then the wind speed of the fan is driven to change in a reciprocating manner, so that the distance of the fine water mist sprayed out of the atomizing nozzle pushed out by wind power changes back and forth, the coverage range of the water mist is expanded under the condition that the mist output of the atomizing nozzle is not changed, the coverage rate of the water mist in the plant area is improved, and the dust settling effect is good;

2. the blades of the fan are arranged along the circumferential direction of the outer wall of the cylindrical rotating ring, the middle space of the rotating ring is reserved, and water mist sprayed by the atomizing nozzle is enabled to be over against the middle part of the rotating ring, so that the water mist can smoothly pass through the middle space of the rotating ring, the resistance of the water mist in the process of passing through the fan is effectively reduced, and the distance of pushing the water mist by the fan is further increased;

3. at the rotating ring rotation in-process, rotatory through the drive carousel, the relative rotation takes place for the contact disc outer wall on friction roller on the messenger carousel and the rotating ring, and the carousel lasts the rotation in-process, and the rotational speed height of rotating ring continuously changes for atomizer's water smoke propelling movement distance back and forth change, thereby make water smoke can cover whole areas in the factory, and then improve dust fall effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.

In the figure, 1, a water pump; 11. an atomizing spray head; 12. a wall; 13. a water pipe; 2. a fan; 21. a mounting frame; 211. a fixed mount; 212. a movable frame; 213. a through hole; 214. a bolt; 22. a rotating ring; 23. a fan blade; 3. a drive device; 31. a first motor; 32. a gear; 33. a ring gear; 4. an adjustment device; 41. a contact pad; 42. a rubbing roller; 421. a rotating roller; 422. a friction sleeve; 43. a turntable; 44. a second motor; 45. a connecting rod; 46. a drive disc; 5. a support frame; 51. a rotating shaft; 52. a bolt; 53. perforating; 54. an ear plate; 55. a pin hole; 6. and (4) contracting the mouth.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the concrete plant spraying dust-settling system disclosed by the invention comprises a water pump 1, an atomizing nozzle 11 and a fan 2. The water pump 1 is fixedly arranged on the inner side of the factory area in a flexible way, the atomizing nozzle 11 is arranged on the top of the enclosing wall 12, the water pipe 13 is fixedly arranged on the enclosing wall 12, and one end of the water pipe 13 is externally connected with the tap water pipe 13. The water pipe 13 is provided with a water pump 1, and the water inlet end of the water pump 1 is communicated with the tap water pipe 13. The water pipe 13 is provided with a plurality of branch pipes communicated with the water pipe 13, the branch pipes are hoses, and one end of each hose, which is far away from the water pipe 13, is communicated with the water inlet end of the atomizing spray head 11.

Referring to fig. 1 and 2, a support frame 5 is fixedly mounted on the enclosing wall 12 by bolts 214, a rotating shaft 51 is fixedly connected to the outer wall of the atomizer 11, the axis of the rotating shaft 51 is parallel to the length direction of the top wall of the enclosing wall 12, and both ends of the rotating shaft 51 are rotatably connected to the support frame 5. The supporting frame 5 is provided with a limiting piece for fixing the rotation angle of the atomizer 11, and the limiting piece selects a bolt 52. The support frame 5 is provided with a through hole 53 matched with the bolt 52 along the axial direction of the rotating shaft 51, the outer wall of the atomizing spray head 11 is fixedly welded with two lug plates 54, the two lug plates 54 are uniformly arranged along the circumferential direction of the physicochemical spray head at intervals, and the two lug plates 54 are provided with pin holes 55 matched with the size of the small holes. The bolt 52 can pass through the through hole 53 and is in inserted fit with the pin hole 55, so that the materialization spray head is fixed. When the pins 52 are inserted into the pin holes 55 of the two ear plates 54, the mist outlets of the atomizer 11 face horizontally into and out of the enclosure 12.

Referring to fig. 1 and 2, the fan 2 is disposed on a side of the atomizer 11 close to the inner side of the enclosure 12. The fan 2 comprises a mounting frame 21 and a rotating ring 22, wherein the mounting frame 21 consists of a fixed frame 211 and a movable frame 212. The fixed frame 211 is fixedly connected with the enclosure wall 12 through bolts 214, two support legs are vertically arranged on the fixed frame 211, two sliding grooves are vertically formed in the bottom of the movable frame 212, and the support legs are arranged in the sliding grooves in a penetrating mode. Threaded holes are horizontally formed in the fixed frame 211, two threaded holes are formed in the vertical direction at intervals, a through hole 213 is formed in the sliding frame, and the bolt 214 penetrates through the through hole 213 in the movable frame 212 and then is in threaded connection with the threaded hole in the fixed frame 211, so that the movable frame 212 is fixed to the fixed frame 211.

Referring to fig. 1 and 3, the axis of the rotating ring 22 is rotatably mounted on the movable frame 212 in parallel with the width direction of the enclosure wall 12, and when the movable frame 212 is at a lower position, the axis of the rotating ring 22 and the axis of the atomizing nozzle 11 contribute. The inner wall of the rotating ring 22 is provided with fan blades 23, the fan blades 23 are arranged along the radial direction of the rotating ring 22, the length of the fan blades 23 is smaller than the radius of the rotating ring 22, the center of the rotating ring 22 is reserved, water mist can pass through the center conveniently, and meanwhile, the fan blades 23 are evenly arranged along the circumferential direction of the rotating ring 22 at intervals. One end of the rotating ring 22 far away from the atomizing nozzle 11 is provided with a contraction opening 6, and the diameter of the smaller end of the contraction opening 6 is not less than the diameter of the opening in the middle of the fan blade 23 of the rotating ring 22.

Referring to fig. 1 and 2, the movable frame 212 is provided with a driving device 3 for driving the rotating ring 22 to rotate, and the driving device 3 includes a first motor 31, a gear 32 and a gear ring 33. The gear ring 33 is coaxially and fixedly sleeved on the outer wall of the rotating ring 22, the first motor 31 is fixedly installed on the movable frame 212, and the 130 carbon brush motor is selected to be used by the first motor 31. A gear 32 is coaxially fixed to the output shaft of the first motor 31, and the gear 32 is engaged with the ring gear 33.

Referring to fig. 1 and 3, the fans 2 are uniformly arranged at intervals along the top wall navigation direction of the enclosure wall 12, and the enclosure wall 12 is provided with an adjusting device 4 for adjusting the wind speed of the fans 2 in a reciprocating manner, wherein the adjusting device comprises a contact disc 41, a friction roller 42, a rotating disc 43 and a driving piece. The contact disc 41 is coaxially sleeved on the outer wall of the rotating ring 22, and the rotating disc 43 is arranged right below the contact disc 41, and the axis of the rotating disc passes through the axis of the rotating ring 22 vertically. Be equipped with the mount pad on the top surface of carousel 43, friction roller 42 and the removable installation of mount pad, friction roller 42 includes live-rollers 421 and friction cover 422, and live-rollers 421 level sets up, and the axis of carousel 43 is perpendicular to the axis of live-rollers 421, and friction cover 422 material is rubber, can dismantle to cup joint on live-rollers 421. When the movable frame 212 is at the lower position, the friction sleeve 422 is in sliding contact with the contact disc 41.

Referring to fig. 1 and 3, each rotating ring 22 has a rotating disc 43 below, the bottom of each rotating disc 43 is suspended, and a connecting rod 45 is eccentrically and rotatably connected to the rotating disc, and the length direction of the connecting rod 45 is parallel to the length direction of the top wall of the enclosing wall 12. The driving piece is a second motor 44, the second motor 44 is fixedly installed on the enclosing wall 12, an output shaft of the second motor 44 faces upwards vertically and is coaxially and fixedly sleeved with a driving disc 46, and the connecting rod 45 is eccentrically and rotatably connected to the driving disc 46. The plane of the axes of drive disk 46 and turntable 43 is parallel to the plane of enclosure 12.

The implementation principle of the embodiment is as follows: when the constructor carries out the spraying humidification to the concrete factory district in, open water pump 1, to the atomizer 11 water-logging on enclosure 12, produce thin water smoke by atomizer 11. Then, the first motor 31 is started, the first motor 31 drives the gear 32 to rotate, and then the gear 32 is in meshing transmission with the gear ring 33 to drive the rotating ring 22 to rotate, so that the fan blades 23 in the rotating ring 22 generate wind power to push water mist to the middle of the factory area. Then, the second motor 44 is turned on to drive the driving disk 46 to rotate, and the connecting rod 45 on the driving disk 46 drives the adjacent rotating disks 43 to rotate, so as to drive the plurality of rotating disks 43 on the enclosing wall 12 to rotate simultaneously. Because the friction roller 42 on the rotary disc 43 is always in contact with the outer wall of the contact disc 41 on the rotating ring 22, the friction force between the contact ring and the friction roller 42 is changed in a reciprocating manner in the horizontal rotation process of the rotary disc 43, so that the wind speed of the fan 2 is driven to change in a reciprocating manner, and the distance of the water mist sprayed by the atomizing nozzle 11 pushed out by wind power is changed in a reciprocating manner. Under the condition that the mist outlet quantity of the atomizing nozzle 11 is not changed, the coverage range of the water mist is enlarged, the coverage rate of the water mist in a plant area is improved, and the dust fall effect is good.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a concrete factory sprays dust fall system, includes water pump (1) and atomizer (11), the external water source of water inlet of water pump (1), atomizer (11) set up on enclosure (12) roof, atomizer (11) are provided with a plurality ofly along enclosure (12) length direction interval, the delivery port of water pump (1) is connected with water pipe (13), water pipe (13) are fixed to be set up on enclosure (12), water pipe (13) and the water inlet intercommunication of atomizer (11), the delivery port level of atomizer (11) is inboard towards enclosure (12), its characterized in that: one side that atomizer (11) are close to enclosure (12) inboard is provided with fan (2), the air inlet end of the play fog end of atomizer (11) towards fan (2), the air-out end level of fan (2) is inboard towards enclosure (12), be provided with on enclosure (12) and be used for driving about fan (2) pivoted drive arrangement (3), be provided with adjusting device (4) that are used for reciprocating motion fan (2) wind speed on enclosure (12).

2. The concrete plant area sprays dust fall system of claim 1, characterized in that: fan (2) including set firmly mounting bracket (21) on enclosure (12) and rotating ring (22) of setting in mounting bracket (21), rotating ring (22) are coaxial with the play fog hole of atomizer (11), radially be provided with flabellum (23) along rotating ring (22) on the inner wall of rotating ring (22), flabellum (23) length is less than rotating ring (22) radius.

3. The concrete plant area sprays dust fall system of claim 2, characterized in that: drive arrangement (3) include first motor (31), gear (32) and ring gear (33), ring gear (33) are coaxial to be set firmly on the outer wall of swivel becket (22), first motor (31) set firmly on mounting bracket (21), gear (32) and the coaxial fixed connection of output shaft of first motor (31), gear (32) and ring gear (33) meshing.

4. The concrete plant area sprays dust fall system of claim 2, characterized in that: adjusting device (4) are including contact dish (41), friction roller (42), carousel (43) and driving piece, contact dish (41) coaxial cover is established on the outer wall of rotating ring (22), carousel (43) rotate to be set up on enclosure (12), the axis of carousel (43) is mutually perpendicular with the axis of rotating ring (22), friction roller (42) rotate to set up in carousel (43) are close to on the quotation of rotating ring (22), the axis of friction roller (42) intersects the axis in carousel (43) perpendicularly, the lateral wall of friction roller (42) and the lateral wall contact of contact dish (41), the driving piece is used for driving about carousel (43) and rotates.

5. The concrete plant area sprays dust fall system of claim 4, characterized in that: carousel (43) level sets up, eccentric rotation is connected with connecting rod (45) on the diapire of carousel (43), connecting rod (45) set up along enclosure (12) length direction, a plurality of carousel (43) that are the straight line and arrange are connected simultaneously on connecting rod (45) and enclosure (12).

6. The concrete plant area sprays dust fall system of claim 5, characterized in that: the driving piece is a second motor (44), the second motor (44) is fixedly arranged on the enclosing wall (12), a driving disc (46) is horizontally and rotatably arranged on the top wall of the enclosing wall (12), an output shaft of the second motor (44) is coaxially and fixedly connected to the top surface of the driving disc (46), and the bottom wall of the driving disc (46) is eccentrically connected with the connecting rod (45).

7. The concrete plant area sprays dust fall system of claim 6, characterized in that: friction roller (42) are including live-rollers (421) and friction cover (422), friction cover (422) coaxial cover is established on live-rollers (421), live-rollers (421) and carousel (43) demountable installation.

8. The concrete plant area sprays dust fall system of claim 7, characterized in that: be provided with axis of rotation (51) on the outer wall of atomizer (11), axis of rotation (51) are on a parallel with the length direction of enclosure (12), support frame (5) have set firmly on the roof of enclosure (12), the both ends of axis of rotation (51) are rotated and are connected on support frame (5), be provided with the locating part that is used for fixed atomizer (11) on support frame (5).

9. The concrete plant area sprays dust fall system of claim 8, characterized in that: the locating part is bolt (52), set up on support frame (5) and pass through hole (53) with bolt (52) looks adaptation, otic placode (54) have set firmly on the outer wall of atomizer (11), set up pinhole (55) with pass through hole (53) looks adaptation on otic placode (54), otic placode (54) are provided with two along atomizer (11) circumference even interval.

10. The concrete plant area sprays dust fall system of claim 9, characterized in that: mounting bracket (21) include with enclosure (12) fixed connection's mount (211) and slide along vertical direction and set up adjustable shelf (212) at mount (211) top, swivel becket (22) rotate and set up on adjustable shelf (212), the level is seted up threaded hole on mount (211), the threaded hole is provided with two along vertical direction interval, be provided with on adjustable shelf (212) with through-hole (213) of screw hole looks adaptation, when through-hole (213) align with the lower position screw hole, friction roller (42) and contact disc (41) contact, wear to be equipped with bolt (214) in through-hole (213), bolt (214) and screw hole threaded connection.