CN205109914U - Secondary centrifugation atomizer - Google Patents

Secondary centrifugation atomizer Download PDF

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Publication number
CN205109914U
CN205109914U CN201520836431.1U CN201520836431U CN205109914U CN 205109914 U CN205109914 U CN 205109914U CN 201520836431 U CN201520836431 U CN 201520836431U CN 205109914 U CN205109914 U CN 205109914U
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CN
China
Prior art keywords
rotating disk
atomization
ring
dish
mount pad
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Withdrawn - After Issue
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CN201520836431.1U
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Chinese (zh)
Inventor
龚艳
张晓�
刘德江
王果
陈晓
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Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture
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Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture
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Priority to CN201520836431.1U priority Critical patent/CN205109914U/en
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Abstract

The utility model relates to a secondary centrifugation atomizer belongs to spraying shower nozzle technical field. The driving motor's of this shower nozzle rear end installation fan wheel, the carousel mount pad that the output shaft suit linked firmly comprises with outer tube socket the interior sleeve pipe that links firmly through the end plate, the cyclic annular carousel that atomizes of a set of radial extension of axial interval distribution of outer tube socket, the front end and the rotating cage installation cover of the install impeller seat of endotheca outside of tubes loop link firmly, the front end installation atomizing rotating cage of rotating cage installation cover, the atomizing rotating cage has front shroud dish and rear cover dish, is equipped with the cage net between the periphery of front shroud dish and rear cover dish, liquid way ring is extended forward to the middle part axial of rear cover dish, and interval distribution is gone up to liquid way ring has liquid way hole, the front end of liquid way ring links firmly through the front end of go -between with rotating cage installation cover, forms cyclic annular liquid way chamber. The utility model discloses a stepless regulation and control, reliable and simple to form the droplet diameter that " biological best particle diameter is theoretical " is confirmed.

Description

A kind of secondary centrifuging atomizer
Technical field
The utility model relates to a kind of atomizer, and especially a kind of secondary centrifuging atomizer, belongs to spraying nozzle technical field.
Background technology
In current control of agricultural pest process, " large discharge ", " all standing " are still the main method of the applications of pesticide, and the situation of " use a kind of type, adopt same droplet, beat all over hundred medicines, prevent and treat various crop disease and insect " is very general.The effective rate of utilization of result agricultural chemicals is only about 30%, has the agricultural chemicals more than 1,000,000 tons to be lost in soil, water body, air every year, not only weakens the prevention and control ability to agricultural pest, and exacerbate widespread pollution from the overuse of fertilizers and pesticides in rural area.
Research shows, adopt the ultra-low volume spray of fogdrop diameter≤100 μm or the low-gallonage spraying of fogdrop diameter 100 ~ 200 μm, effectively can increase the adhesive ability of medicament on Target crops and coverage density, thus while minimizing pesticide dosage, improve prevention effect.On the other hand, according to " biological optimum grain-diameter is theoretical " (BODS), the droplet of various organism to different-grain diameter scope has selects capture ability accordingly.Such as: the optimum grain-diameter of injurious forest-insect is 20 ~ 60 μm, the creep optimum grain-diameter of insect of crops is 70 ~ 120 μm, and the optimum grain-diameter of flying insect is then 20 ~ 50 μm.Therefore, for different agricultural pest, the pesticide droplet spraying respective diameters size can obtain desirable prevention effect.
In recent years, the research of low discharge shower nozzle obtains remarkable break-throughs.Retrieval finds, application number is that the Chinese patent application of 201010136395.X discloses a kind of low-volume spray head of sprayer duster, there is low amounts jet pipe, the woven hose upper end installation connecting element of low amounts jet pipe, connector connects low flow nozzle, and connector outer wall installs impeller by bearing, impeller is shaped with blade, cap of spraying nozzle is installed in described impeller upper end, and cap of spraying nozzle upper edge is shaped with water dumping hole, and apopore and the woven hose of the inner chamber of described cap of spraying nozzle and water dumping hole and low flow nozzle are connected.The liquid of this shower nozzle is tentatively broken up through impinging upon cap of spraying nozzle inwall, spread laterally from cap of spraying nozzle lumen centers under the effect of centrifugal force and wall attachment effect and throw away from the shunting of water dumping hole, by triple roles such as high velocity air smash further the droplet particle that is finally sprayed onto on crops little.But, the atomization mechanism of this shower nozzle is for clashing into fragmentation+pneumatic atomization, namely first by the effect of impact of liquid and cap of spraying nozzle inwall, liquid is made to be broken into larger droplet, then by strength effect, droplet is made to be atomized into more fine mist further, although can obtain fine mist, spectrum of fog drop is wider---namely the thickness of droplet is uneven, and large droplet easily runs off, the easy drift of little droplet, thus pesticide efficacy is not high enough, and easily cause environmental pollution; In addition, the droplet volume median diameter (VMD) formed like this is relatively fixing, is difficult to require according to the difference of controlling object and change.
In addition; application number be 201020135491.8 Chinese patent disclose a kind of ultra-low/low capacity mist spraying combined spray nozzle; comprise and be buckled in by honeycomb screen the spout assembly that spout connects into; sprayer body; liquid tube connector; spreader, fluted disc, the rotary blade assembly connected to form successively by solid shafting, bearing, bearing block, impeller, impeller locknut; Honeycomb screen is buckled on spout, and spout is flexibly connected with sprayer body, and the inwall of sprayer body has brace rod to fix spreader, the bottom of spreader is connected with liquid tube connector, the hypomere of spreader has fluid hole, and hypomere upper end fixed installation fluted disc, solid shaft assembling is in the hollow taper hole of spreader epimere.The atomization mechanism of this shower nozzle is that pneumatic atomization+shock is broken, namely first liquid is made to form very thin liquid film along spreader outer surface by action of high-speed airflow, blowed on fluted disc edge, liquid forms brin on crown, cut off by high velocity air again and form larger droplet, and then the effect of impact of impeller by large droplet and High Rotation Speed, make droplet be broken into more fine mist further, there is the shortcoming of droplet spectrum width equally.In addition, its fogdrop diameter is regulated and is realized, when not installing spout-honeycomb screen assembly by nozzle structure change, fogdrop diameter is less, and when after installation spout-honeycomb screen assembly, droplet, through honeycomb screen, coalescence occurs, particle diameter increases, and can not realize the stepless regulated of fogdrop diameter.
Summary of the invention
The purpose of this utility model is: the shortcoming existed for above-mentioned prior art, and proposing one not only can effective refinement droplet, and droplet size is even, diameter can carry out stepless regulated secondary centrifuging atomizer easily.
In order to reach above object, secondary centrifuging atomizer of the present utility model comprises drive motors (4), and draught fan impeller (5) is installed in the rear end of described drive motors; The output shaft of described drive motors is set with the rotating disk mount pad (14) that is connected, and described rotating disk mount pad is made up of the inner sleeve be connected by end plate and outer pipe seat, one group of radial ring-type atomization rotating disk (1) extended of the axially spaced-apart distribution of described outer pipe seat; The outer kink of described inner sleeve is equipped with the impeller mount pad (7) of driven vane (3), and the front end of described impeller mount pad (7) and the kink rotating cage installation sleeve (13) outside impeller mount pad is connected; The front end mounting cup of described rotating cage installation sleeve (13) the atomization rotating cage (2) outside atomization rotating disk, described atomization rotating cage has and lays respectively at the forward and backward front shroud dish of atomization rotating disk and back cover dish, between described front shroud dish and the periphery of back cover dish, cage net is housed; The middle part of described back cover dish axially extends fluid path ring forward, described fluid path ring is intervally distributed with the fluid path hole corresponding with being atomized disk position; The front end of described fluid path ring is connected by the front end of connecting ring and rotating cage installation sleeve, forms the ring-type fluid path chamber (Q) of settling external liquid source influidic pipe (16).
The utility model further improves, and the radial middle part of described atomization rotating disk has angled transition ring backwards.Because the computing formula of centrifugal intertia force is formula herb liquid quality m, the timing of atomization disc angle speed omega one, bending structure can make under the prerequisite not strengthening atomization disk diameter, strengthen the axis of rotation and draw vector r to particle, therefore bending structure can increase centrifugal intertia force and increase spraying area, be conducive to liquid and form uniform liquid film in disc surfaces, and cracking subsequently and atomization, thus improve primary atomization quality.
During work, drive motors drives atomization rotating disk and draught fan impeller High Rotation Speed (1500 ~ 3000r/min) by rotating disk mount pad, because the diameter of draught fan impeller is greater than drives impeller, therefore it rotates the forced airflow produced and orders about drives impeller, rotating cage installation sleeve and atomization rotating cage under pneumatic effect with more High Rotation Speed (5000 ~ 8000r/min); Liquid arrives the immediate vicinity of each atomization rotating disk respectively by fluid path hole, in the effect of atomization turntable rotation centrifugal force, forms liquid film, brin is thrown to the edge of atomization rotating disk, and forms droplet and dish out, and completes primary atomization; Droplet after primary atomization is thrown on the atomization rotating cage of more High Rotation Speed, is become more small droplet, complete secondary-atomizing by further centrifugal atomizing, is produced forced airflow to long-range conveying afterwards by draught fan impeller.
Compared with prior art, atomization mechanism of the present utility model is centrifugal atomizing+centrifugal atomizing, namely the droplet that the High Rotation Speed first by being atomized rotating disk makes medical liquid atomizing become larger, High Rotation Speed again by being atomized rotating cage makes droplet be atomized into more fine mist further, and obtain the droplet group of narrow spectrum of fog drop, and by regulating atomization rotating disk and the rotating speed of atomization rotating cage can change fogdrop diameter, therefore achieve stepless regulated, simple, thus the fogdrop diameter that formation " biological optimum grain-diameter is theoretical " is determined.
Further, the rotating disk slot of the axially spaced-apart distribution multi-turn circumference interval disconnection of the tubular body of described outer pipe seat, each circle rotating disk slot respectively plug-in mounting fixed radial extends the rotating disk sheet of formation ring-type atomization rotating disk; The corresponding each circumferential interval open position enclosing rotating disk slot in axially spaced-apart place between adjacent circle rotating disk slot has the flow path groove that arc length is greater than rotating disk slot.
Further, described inner sleeve is axially extended to form by the endoporus of end plate, and described outer pipe seat is fixedly connected with end plate and corresponding rotating disk sheet by the securing member run through in the bolt hole of rotating disk slot.
Further, described fluid path ring be intervally distributed with and be atomized rotating disk upper runner slot and put corresponding multiple fluid path holes.
Further, described rotating disk slot is wide outside and narrow inside.
Further, described cage net is 75-85 order.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the B-B profile of Fig. 1.
Fig. 3 is the A-A profile of Fig. 1.
Fig. 4 is the rotating disk mount pad perspective view of Fig. 1 embodiment.
Fig. 5 is the rotating disk mount pad cutting perspective view of Fig. 1 embodiment.
Fig. 6 is the outer pipe seat perspective view of Fig. 1 embodiment rotating disk mount pad.
Detailed description of the invention
Embodiment one
The secondary centrifuging atomizer of the present embodiment as shown in Figure 1, 2, 3, draught fan impeller 5 is installed in the rear end of drive motors 4, its output shaft 4-1 is set with and is connected rotating disk mount pad 14 by flat key 15, and rotating disk mount pad 14 is made up of the inner sleeve 14-2 be connected by end plate 14-1 and outer pipe seat 14-3.As shown in Figure 6, the rotating disk slot 14-a of the axially spaced-apart distribution four circle circumferential interval disconnection of its tubular body, 14-a is wide outside and narrow inside for rotating disk slot, and the plug-in mounting being beneficial to atomization rotating disk 1 is fixed for the concrete structure of outer pipe seat 14-3.The radial middle part of atomization rotating disk 1 has angled transition ring 1-1 backwards.Each circle rotating disk slot 14-a respectively plug-in mounting fixed radial extends the rotating disk sheet forming ring-type atomization rotating disk 1; The corresponding each circumferential interval open position enclosing rotating disk slot 14-a in axially spaced-apart place between adjacent circle rotating disk slot 14-a has the flow path groove 14-b that arc length is greater than rotating disk slot 14-a.
Rotating disk mount pad 14 structure is see Fig. 4,5, inner sleeve 14-2 is axially extended to form by the endoporus of end plate 14-1, and outer pipe seat 14-3 is fixedly connected with end plate 14-1 and corresponding rotating disk sheet by the rotating disk bolt 11 run through in the bolt hole 14-c of rotating disk slot 14-a.
The outer impeller mount pad 7 that driven vane 3 is housed by forward and backward bearing 12 kink of inner sleeve 14-2, forward and backward bearing 12 is by spacer 6,9 axial location.The front end of impeller mount pad 7 and the kink rotating cage installation sleeve 13 outside impeller mount pad 7 is connected.The atomization rotating cage 2 of front end mounting cup outside atomization rotating disk 1 of rotating cage installation sleeve 13, atomization rotating cage 2 has and lays respectively at the forward and backward front shroud dish 2-1 of atomization rotating disk 1 and back cover dish 2-2, be connected by connecting bolt 10 between the periphery of front shroud dish 2-1 and back cover dish 2-2, and 80 object cage net 2-3 are housed.The middle part of back cover dish 2-2 axially extends fluid path ring 2-4 forward, fluid path ring 2-4 is intervally distributed with the multiple fluid path hole 2-5s corresponding with being atomized rotating disk upper runner groove 14-b position.The front end of fluid path ring 2-4 is connected by the front end of connecting ring 2-6 and rotating cage installation sleeve 13, forms the ring-type fluid path chamber Q settling external liquid source influidic pipe 16, influidic pipe 16 has the fluid hole corresponding with 2-5 position, fluid path hole.
More specifically, the secondary centrifuging atomizer of the present embodiment has four the atomization rotating disks 1 be installed on rotating disk mount pad 14, is connected between rotating disk mount pad 14 and the axle of drive motors 4 by key 15.Seam between atomization rotating cage 2 and rotating cage installation sleeve 13, be connected by deep-groove ball rolling bearing 12 between rotating cage installation sleeve 13 with rotating disk mount pad 14, impeller mount pad 7 and rotating cage installation sleeve 13 are bolted connection, and drives impeller 3 is installed on impeller mount pad 7, and setting angle is adjustable.
During work, drive motors drives rotating disk mount pad and atomization rotating disk High Rotation Speed (1500 ~ 3000r/min), draught fan impeller rotates the forced airflow produced and makes drives impeller, rotating cage installation sleeve and atomization rotating cage are with more High Rotation Speed (5000 ~ 8000r/min), liquid is then through the fluid hole of influidic pipe, the fluid path hole of rotating cage mount pad, the flow path groove of rotating disk mount pad arrives the immediate vicinity of atomization disc surfaces respectively, first liquid film is formed by the edge throwing to atomization rotating disk in the effect of centrifugal force, then brin is split into, fragment into droplet liquid again, be atomized disk edge to dish out, complete primary atomization, droplet after primary atomization is online by the cage throwing the atomization rotating cage of more High Rotation Speed, is centrifuged and is atomized into more small droplet, thus complete secondary-atomizing.
Experiment proves, the mode that this secondary centrifuging atomizer combines with rotating cage type centrifugal atomizing owing to adopting rotating disc type centrifugal atomizing, therefore has following beneficial effect:
1) the liquid droplet after atomization rotating disk centrifugal atomizing is thrown on the atomization rotating cage of more High Rotation Speed, more small droplet is atomized into by secondary centrifuging, the most I of fogdrop diameter reaches 20 μm, thus meet the requirement of ultra low volume spray, while raising control of agricultural pest effect, " decrement " that achieve agricultural chemicals uses;
2) be atomized rotating disk and independently can rotate that (rotating speed being atomized rotating disk can by the rotation speed regulating and controlling of drive motors with atomization rotating cage, the rotating speed of atomization rotating cage then changes by adjusting the setting angle of drives impeller), thus step-less adjustment atomization rotating disk and the rotating speed being atomized rotating cage can be distinguished, fogdrop diameter in primary atomization and secondary-atomizing process is changed, thus obtain desirable fogdrop diameter, with the control requirement of satisfied different agricultural pest.
In a word, the present embodiment achieves low amounts, ultra low volume spray, and by rotation speed change, obtains different fogdrop diameters easily, the different requirements of composing droplet grain with satisfied different controlling object.

Claims (6)

1. a secondary centrifuging atomizer, comprises drive motors (4), it is characterized in that: draught fan impeller (5) is installed in the rear end of described drive motors; The output shaft suit of described drive motors is connected rotating disk mount pad (14), and described rotating disk mount pad is made up of the inner sleeve be connected by end plate and outer pipe seat, and the axially spaced-apart of described outer pipe seat distributes one group of radial ring-type atomization rotating disk (1) extended; The outer kink of described inner sleeve is equipped with the impeller mount pad (7) of driven vane (3), and the front end of described impeller mount pad (7) and the kink rotating cage installation sleeve (13) outside impeller mount pad is connected; The front end mounting cup of described rotating cage installation sleeve (13) the atomization rotating cage (2) outside atomization rotating disk, described atomization rotating cage has and lays respectively at the forward and backward front shroud dish of atomization rotating disk and back cover dish, between described front shroud dish and the periphery of back cover dish, cage net is housed; The middle part of described back cover dish axially extends fluid path ring forward, described fluid path ring is intervally distributed with the fluid path hole corresponding with being atomized disk position; The front end of described fluid path ring is connected by the front end of connecting ring and rotating cage installation sleeve, forms the ring-type fluid path chamber (Q) of settling external liquid source influidic pipe (16).
2. secondary centrifuging atomizer according to claim 1, it is characterized in that: the rotating disk slot of the axially spaced-apart distribution multi-turn circumference interval disconnection of the tubular body of described outer pipe seat, each circle rotating disk slot respectively plug-in mounting fixed radial extends the rotating disk sheet of formation ring-type atomization rotating disk; The corresponding each circumferential interval open position enclosing rotating disk slot in axially spaced-apart place between adjacent circle rotating disk slot has the flow path groove that arc length is greater than rotating disk slot.
3. secondary centrifuging atomizer according to claim 2, it is characterized in that: described inner sleeve is axially extended to form by the endoporus of end plate, and described outer pipe seat is fixedly connected with end plate and corresponding rotating disk sheet by the securing member run through in the bolt hole of rotating disk slot.
4. secondary centrifuging atomizer according to claim 3, is characterized in that: described fluid path ring is intervally distributed with and is atomized rotating disk upper runner slot and puts corresponding multiple fluid path holes.
5. secondary centrifuging atomizer according to claim 4, is characterized in that: described rotating disk slot is wide outside and narrow inside.
6. secondary centrifuging atomizer according to claim 5, is characterized in that: described cage net is 75-85 order.
CN201520836431.1U 2015-10-27 2015-10-27 Secondary centrifugation atomizer Withdrawn - After Issue CN205109914U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195351A (en) * 2015-10-27 2015-12-30 农业部南京农业机械化研究所 Two-step centrifugal atomization nozzle
CN108906360A (en) * 2018-08-31 2018-11-30 江苏京展能源科技有限公司 A kind of solar energy evacuated effective diffused atomization spray lacquer device
CN111570099A (en) * 2020-05-14 2020-08-25 安徽理工大学 Jet atomization device and flotation device with same
CN111990500A (en) * 2020-09-29 2020-11-27 云南农业大学 Water mist device for tea fermentation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195351A (en) * 2015-10-27 2015-12-30 农业部南京农业机械化研究所 Two-step centrifugal atomization nozzle
CN108906360A (en) * 2018-08-31 2018-11-30 江苏京展能源科技有限公司 A kind of solar energy evacuated effective diffused atomization spray lacquer device
CN111570099A (en) * 2020-05-14 2020-08-25 安徽理工大学 Jet atomization device and flotation device with same
CN111990500A (en) * 2020-09-29 2020-11-27 云南农业大学 Water mist device for tea fermentation

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GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20160330

Effective date of abandoning: 20170510