CN102114441A - Device and method used for spraying liquid - Google Patents
Device and method used for spraying liquid Download PDFInfo
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- CN102114441A CN102114441A CN2009102656989A CN200910265698A CN102114441A CN 102114441 A CN102114441 A CN 102114441A CN 2009102656989 A CN2009102656989 A CN 2009102656989A CN 200910265698 A CN200910265698 A CN 200910265698A CN 102114441 A CN102114441 A CN 102114441A
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Abstract
The invention relates to a method used for pneumatically spraying liquid especially such as colourant, enamel paint, paint, and the like and generating spray that is applied to an object, wherein the method is characterized in that a spraying device (1) is utilized. In the method, liquid basically departs from the spraying device (1) under zero pressure. Spraying air in the spraying device is formed through rotation at a first angle (14) relative to a longitudinal axis (6) of the spraying device and at a second angle (21) relative to an axes (22) perpendicular to the longitudinal axis (6) of the spraying device, so that spraying air can depart from the spraying device in a whirlwind manner. The first angle (14) ranges from 25 to 40 degrees, and the second angle (21) ranges from 35 to 55 degrees. Liquid is sprayed by spraying air after departing from the spraying device.
Description
Technical field
The present invention relates to a kind of pneumatic sprinkling/atomizing that is used for
Liquid---particularly pigment, enamel paint/enamel, lacquer etc.---and be used to produce the method for the spraying to object to be applied.In addition, the invention still further relates to a kind of flusher that is used to implement described method.
Background technology
By the enamel paint sprinkler pneumatically during spraying liquid or in the scope at coating process, the sprinkler of flowing through, described then liquid under high pressure leaves nozzle to material to be sprayed---normally liquid---for example.After leaving nozzle, described liquid is sprayed into spraying by adding the sprinkling air, and the compressed air that wherein leaves special air nozzle or air port is in this adjustment and formation spraying.
For example known a kind of being used for mixed the spray nozzle device that sprays by extraneous air in DE 112006002295T5.Wherein the liquid that will be under the pressure flows to nozzle body, described liquid leaves liquid outlet along spraying direction, and spray to form atomize by the compressed air that leaves an air discharging channel, this air discharging channel is obliquely installed with respect to the longitudinal axis of spray nozzle.
In such method, fluid pressure influences the quality that is sprayed onto the spraying on the object for the treatment of application significantly.Liquid leaves nozzle because pressure is high with high speed.Because relevant therewith high liquid kinetic energy, spray air at first follow have high pressure, liquid at a high speed, although liquid has kinetic energy and still can spray described liquid effectively, can make the spraying result who wishes before arriving described object simultaneously.Under these preconditions, effectively spray usually and just to begin during at a distance of about 1cm to 4cm with the liquid outlet of nozzle.Owing to pressure condition forms spraying, described spraying impinges upon with high pressure sprays on the object.Material splash and liquid mist occur, described liquid mist does not have to arrive the object treat application and enters environment as so-called " fly coat with lacquer/go beyond the scope sprinkling (Overspray) " thereupon.The material surface covered that causes thus is about 30% to 40% in traditional spraying technique.This means that about 60% to 70% of material therefor does not have not that is to say to be used effectively attached on the object.The danger that the mass effect aspect of this external conventional spray method exists on the object to form and sprays speckle---be injustice/uneven surfaces, be similar to (spraying paint) tangerine peel/foaming---.Bight and rib portion may be difficult to be processed to optimum efficiency.In addition, owing to wait to spray the use or percolation (amount) height of material, nozzle abrasion is bigger.At last, the material surface covered is low also to have economic impact, because this course of injection consumption of energy height, raw material use costliness and working time are long.
Summary of the invention
Therefore the objective of the invention is to, provide a kind of and realize material coating efficiently and by using resource to reduce the method for spraying process cost economically.Can treat to realize extra high coating quality on the object of application by described method and corresponding device thereof simultaneously.
Realize as follows according to purpose of the present invention: leave flusher with making the essentially no pressure of liquid, spray air in described flusher with respect to first angle of the longitudinal axis of described flusher with turn to respect to second angle perpendicular to the axis of the longitudinal axis of described flusher, make described sprinkling air obtain eddy flow/rotating flow (Drall) and leave described flusher with being with eddy flow, described first angle is in 25 ° to 40 ° angular range, and described second angle is in 35 ° to 55 ° angular range.After leaving described flusher, the spraying that described sprinkling air bumps against on the liquid that essentially no pressure flows out and described spray liquid is become to wish.
Because the kinetic energy of liquid is almost nil, so needn't be by spraying this kinetic energy of compensated with air.Described method has realized: spraying air only needs to bump against on the liquid under lower pressure just can obtain senior spray effect.Therefore, spray air and can be used for spraying and regulating spraying more effectively.Because the flowing velocity of liquid is almost nil at nozzle exit, can directly engage liquid in the exit of flusher so spray air.Because liquid is formed and sprays necessary energy and be lower than conventional method by spraying air, institute so that spraying to bump against described object upward pressure also obviously less.This advantage of bringing is: the splash of coating material is considerably less.This makes that the material surface covered is higher, and its amount of liquid that shows as use is less.
The eddy flow that sprays air is to the typing of spraying and/or spray quality and produce following influence: form meticulous especially, uniform spraying, described spraying is very near the outlet of flusher.Can also reduce flusher and the distance for the treatment of the object of application thus.
Eddy flow helps to realize the spray regime of meticulous qualification on object in addition.The not only rotational flow of spraying, and clearly limited, promptly Pen Wu spatial dimension has boundary clearly.Can realize best jeting effect by described method, it shows as surface very uniformly.Avoided the disadvantageous material build on object.Because the surface evenly, bed thickness also very evenly also can be processed rib portion and bight better.Compare with traditional spraying technique, reduced energy consumption owing to compressed air uses to reduce, this point plays positive effect to economy and cost benefit.Relevant therewith, also reduced human cost.Because the liquid velocity in flusher is lower, the service life of also obviously having improved related device.
Proved that particularly advantageous is to distribute the liquid at least one nozzle box in described flusher.Preferably, described liquid is assigned in a plurality of for example four nozzle boxs, can realize meticulous especially spraying thus.In a kind of improvement project of this present invention design, propose: by at least one restricting element, preferably in the nozzle box, reduce fluid pressure.Thus, even import liquid under pressure, material pressure is reduced near zero in the sprinkler exit, this point makes the sprinkling of being undertaken by compressed air subsequently become simple especially.
Avoid material to deposit in flusher and before the flusher---for example in conveying device such as flexible pipe etc.---, described material deposition can have a negative impact to spray effect and ejection efficiency in principle, and described method also proposes: the form with recycled material stream flows to flusher with liquid.Such recycled material stream for example can realize that wherein said liquid always is in the motion and not and can deposits by loop back device on spray gun or similar device.This means, injected even described material or liquid do not have, also be in the motion in principle.Aspect desirable production efficiency, obviously shortened the off-time that is used to clean flusher.
The device that is used for implementing described method according to the present invention has the local at least local at least nozzle body that is arranged in the air guide body of air guide body and that is arranged on described cover of a cover.Described cover is designed to its inboard and has at least one along spraying portion's section that direction is shunk.Described portion's section of shrinking along the sprinkling direction becomes first angle with the longitudinal axis of described flusher, and described first angle is 25 ° to 40 °.Correspondingly, described air guide body be formed with that the contraction flow region section of at least one and described cover is complementary around portion's section.Described air guide body have at least one air delivery passage around portion's section.Such air delivery passage can be a hole, and this air delivery passage also can be designed to the form of groove, the contraction flow region section acting in conjunction of described groove and described cover, is formed for spraying the path of air.Described air is carried and is arranged to become one second angle with an axis that extends perpendicular to described flusher longitudinal axis, and described second angle is 35 ° to 55 °.So just, make the sprinkling air so enter described air duct, the longitudinal axis that promptly described sprinkling air at first favours described flusher turns to.Simultaneously, spray air and so turn to by second angle, make described sprinkling air obtain an eddy flow, this eddy flow is similar to a kind of bending motion can be around the longitudinal axis rotation of flusher.By described eddy flow described spraying is not only sprayed, and obtain shape that wish, clear-cut.Described eddy flow produces positive impact to the character/state of spraying simultaneously, and the composition of described spraying is even especially.This has very big help to favourable sprinkling result and high material surface covered.In the design of air delivery passage, comprise particularly straight passage.The bending channel that extends around the air guide body also can be set, and this bending channel has been strengthened the eddy flow effect in addition.In addition, described passage can be to implement in the form of the groove that forms on the surface of air guide body or with the form in the hole in the air guide body.
Preferably, nozzle body have at least one, preferred four blow ports, described blow port feed at least one, preferred four nozzle boxs.Particularly realize the high quality of spraying relatively with the quantity of nozzle box, reason is that to leave the amount of material stream of flusher by each aperture of nozzle box all very little and then can be sprayed air and spray especially effectively.Proof is particularly advantageous to this is in the zone of blow port downstream in the nozzle box restricting element to be set along spraying direction.
More advantageously, blow port is arranged to tilt with respect to the longitudinal axis of nozzle body, makes material stream enter the nozzle box in the mode of effective reduction pressure thus.
In order to control material stream, a needle-valve/needle-like piece that can move back and forth is set in nozzle body in addition, can interrupts or regulate described material stream at any time apace by means of described needle-valve.
Description of drawings
Feature of the present invention, advantage and possible application by following to embodiment explanation and accompanying drawing in provide.Described herein and/or constitute theme of the present invention arbitrarily with the whole features itself shown in the accompanying drawing or its, and irrelevant with its summing-up general introduction of quoting in the part in claim or claim.Wherein show:
Fig. 1 shows according to flusher of the present invention with cutaway view,
Fig. 2 a shows the cover among Fig. 1,
Fig. 2 b shows air guide body among Fig. 1 with side view,
Fig. 2 c shows the nozzle body among Fig. 1,
Fig. 3 a shows air guide body according to another embodiment of the present invention with front view,
Fig. 3 b shows the air guide body according to Fig. 3 a.
The specific embodiment
Shown in Figure 1 have three critical pieces---the flusher 1 of cover 2, air guide body 3 and nozzle body 4.Fig. 1 is illustrated in the flusher 1 under the assembled state, promptly covers 2 and is enclosed on the air guide body 3 and described air guide body is received within the inside of described cover.In addition, the part of nozzle body 4 is arranged in the inside of air guide body 3.In addition, cover 2 extends on the flange 5 of nozzle body 4.In the inside of nozzle body 4, one aperture 7 that is used to carry material to be sprayed is set with one heart with the longitudinal axis 6 of flusher.Extend towards the end that is positioned at the left side in Fig. 1 of flusher 1 at the first inner segments 7a of nozzle body 4 in the aperture 7 that is used for the material conveying, promptly along spray direction (illustrating by an arrow) extension in Fig. 1.With the first inner segments 7a of nozzle body 4 adjacent be one second section 7b, the internal diameter of described second section is less than the internal diameter of the first inner segments 7a.Be used for aperture 7 formation one projection that material is carried thus, described projection can interact with a needle-valve that can move vertically 8, and described needle-valve 8 can be carried by being resisted against the protruding material that stops towards ejection end of going up.Be close to second section 7b and form four blow ports 9 that distribute with one heart, described blow port leads to a nozzle box 10, and described nozzle box is formed between the inboard and one that radially widen towards spray end, as to be adjacent to blow port 9 portion's section 11 of air guide body 3.On the end of nozzle box 10, described material leaves flusher 1 by material outlet 12.
Shown in Fig. 2 a, cover 2 has the through hole 13 that extends vertically.Described cover is divided into first section 13a and second section 13b, and wherein first section 13a is arranged essentially parallel to longitudinal axis 6 and extends, and covers second section 13b of 2 towards the spray end convergent.The inwall of cover 2 is arranged to 6 one-tenth one first angles 14 that are about 30 degree in Fig. 2 a of longitudinal axis with flusher 1 in the section 13b of convergent portion.As shown in Figure 1, air guide body 3 is arranged in the aperture 13 of cover 2.Fig. 2 b illustrates air guide body 3 with side view.Air guide body 3 has through hole 15, and this through hole is divided into two section 15a of portion and the 15b that illustrates by a dotted line, and wherein the internal diameter of first section 15a is greater than the internal diameter of second section 15b.
As in Fig. 1 as can be seen, the second inner segments 7b of nozzle body 4 is arranged among first section 15a of air guide body 3 basically, and portion's section 11 that (gradually) of nozzle body widens is arranged among second section 15b of air guide body 3.By the blow port 9 with respect to longitudinal axis 6 tilted alignments of flusher 1, material flows in the space between second section 15b of widening portion section 11 and nozzle body, formation nozzle box 10, described space.
As shown in Figure 2, air guide body 3 is divided into two portion's sections 16 and 17 on the outer surface, and wherein first section 16 extended along spraying direction with cylindrical shape substantially, and second outer segments 17 of air guide body 3 is along spraying direction with the conical in shape convergent.In addition, described tapered portion section 17 is divided into first section 17a and second section 17b.Described first section 17a extends radially outward with respect to second section 17b with the form of projection.At this, the outstanding section 17a of portion and the section 13b of convergent portion of the through hole 13 of cover 2 are complementary.When air guide body 3 was set in the cover 2, the outstanding section 17a of portion of air guide body 3 abutted on the section 13b of portion of convergent.Simultaneously, between first section 13a of the through hole 13 of first outer segments 16 of air guide body 3 and cover 2, form one in the air guide body and and cover first annular space 18 between 2.As in Fig. 1 as can be seen, keeping a form between the second tapered portion section 17b and the section 13b of convergent portion is the radial spacing of second annular space 19.
In addition, on the outstanding section 17a of portion of air guide body 3, form the air delivery passage 20 of a form of grooves.Air delivery passage 20 is designed to, and is about 45 second angles of spending 21 for 22 one-tenth one with respect to an axis that extends perpendicular to the longitudinal axis 6 of flusher 1.
Shown in Fig. 2 c, nozzle body 4 has and is used to carry compressed-air actuated aperture 23.If assemble cover 2, air guide body 3 and nozzle body 4 as illustrated in fig. 1, then the compressed air of introducing by compressed air inlet 23 enters first annular space 18, and can only enter second annular space 19 by air delivery passage 20 because protuberance section 17a abuts on the inwall of cover 2.In other words, compressed air turns to for the first time obliquely by air delivery passage 20, turns to for the second time in the mode on the inwall of second section 13b bumping against cover then.So just, make compressed air obtain an eddy flow, described compressed air leaves the air outlet slit 24 shown in Fig. 1 under eddy flow.After the compressed air that turns to left flusher 1 by air outlet slit 24, described compressed air bumped against the liquid that leaves four material outlets.Because described liquid by 11 throttlings of widening portion section and do not leave material outlet 12, can spray described liquid so leave the compressed air of air outlet slit 24 with almost having pressure effectively in the nozzle box.In addition, because compressed air has eddy flow, so the liquid that sprays forms directed spraying, and along spraying direction towards the object acceleration for the treatment of application.
In order to assemble, the end back on spraying direction of air guide body 3 is set on the nozzle body 4, be set on the air guide body and make cover 2 second section 13b cling on second section 17b of air guide body 3 and cover 2, utilize the end back on spraying direction of cover 2 to abut on the flange 5 of nozzle body 4 simultaneously with through hole 13.Therefore, each member: cover 2, air guide body 3 and 4 fixed to one another connections of nozzle body, wherein air guide body 3 is fixed between cover 2 and the nozzle body 4.
Fig. 3 a illustrates the air guide body 3 with air delivery passage 20 so that front view is exemplary, and Fig. 3 b illustrates air guide body 3 with side view.As shown in the figure, air delivery passage 20 is driven to compressed air on a kind of circular orbit of longitudinal axis 6, and compressed air is turned to towards longitudinal axis obliquely.This has produced above-mentioned eddy flow effect, forms the particularly spraying of clear qualification thus.
Reference numerals list
1 flusher
2 covers
3 air guide body
4 nozzle bodies
5 flanges
The longitudinal axis of 6 flushers
7 are used for the aperture that material is carried
First inner segments of 7a nozzle body
Second section of 7b nozzle body
8 needle-valves
9 sprocket hole second mouths
10 nozzle boxs
Portion's section of widening of 11 nozzle bodies
12 material outlets
The through hole of 13 covers
First section of the through hole of 13a cover
The convergent portion section of the through hole of 13b cover
14 first angles
The through hole of 15 air guide body
First section of through hole of 15a air guide body
Second section of the through hole of 15b air guide body
The cylindrical portion section of 16 air guide body
The tapered portion section of 17 air guide body
The protuberance section of 17a tapered portion section
Second section of 17b tapered portion section
18 first annular spaces
19 second annular spaces
20 air delivery passage
21 second angles
22 axis
23 air intakes
24 air outlet slits.
Claims (9)
1. one kind is used for spraying liquid pneumatically---particularly pigment, enamel paint, lacquer etc.---and produce the method that is coated to the spraying on the object, and this method is utilized a flusher (1),
Wherein, leave described flusher (1) with making the essentially no pressure of described liquid,
Wherein, make spray air in described flusher to turn to second angle (21) with respect to the axis (22) of a longitudinal axis perpendicular to described flusher (1) (6) with respect to first angle (14) of the longitudinal axis (6) of described flusher, make described sprinkling air leave described flusher with having eddy flow, described first angle (14) is in 25 ° to 40 ° angular range, described second angle (21) is in 35 ° to 55 ° angular range
Wherein, described liquid after leaving described flusher by described sprinkling air spray.
2. method according to claim 1 is characterized in that, in described flusher (1), described liquid is assigned at least one, preferred four nozzle boxs (10).
3. method according to claim 1 and 2 is characterized in that, by at least one restricting element (11), preferably the pressure of described liquid is reduced.
4. according to each described method in the aforementioned claim, it is characterized in that, described liquid is circulated in described flusher (1) and/or in the device of described flusher upstream.
5. flusher that is used for implementing according to each described method of claim 1 to 4, wherein said flusher (1) have a cover (2), at least the air guide body (3) and that is arranged in the described cover (2) of part be arranged on the interior nozzle body (4) of described air guide body (3) in the part at least, it is characterized in that
The inboard of described cover (2) has at least one along spraying portion's section (13b) that direction is shunk, described portion's section (13b) of shrinking along the sprinkling direction is to become the mode of one first angle (14) to extend with the longitudinal axis (6) of described flusher, described first angle is 25 ° to 40 °
Described air guide body (3) have that the contraction flow region section (13b) of at least one and described cover (2) is complementary around portion's section (17a),
Described air guide body (3) have at least one air delivery passage (20) around portion's section (17a), described air delivery passage is to become the mode of one second angle (21) to extend with an axis (22) perpendicular to described flusher (1) longitudinal axis (6), and described second angle (21) is 35 ° to 55 °.
6. flusher according to claim 5 is characterized in that, described nozzle body (4) have at least one, preferred four blow ports (9), described blow port feeds one, preferred four nozzle boxs (10).
7. flusher according to claim 6 is characterized in that, in described blow port (9) downstream one restricting element (11) is set along spraying direction.
8. according to claim 6 or 7 described flushers, it is characterized in that described blow port (9) is arranged to tilt with respect to the longitudinal axis (6) of described nozzle body (4).
9. according to each described flusher in the claim 5 to 8, it is characterized in that, in described nozzle body (4), be provided with one and be used to control the needle-valve (8) that material flows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102656989A CN102114441A (en) | 2009-12-30 | 2009-12-30 | Device and method used for spraying liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102656989A CN102114441A (en) | 2009-12-30 | 2009-12-30 | Device and method used for spraying liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102114441A true CN102114441A (en) | 2011-07-06 |
Family
ID=44213427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102656989A Pending CN102114441A (en) | 2009-12-30 | 2009-12-30 | Device and method used for spraying liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102114441A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128018A (en) * | 2013-03-08 | 2013-06-05 | 上海致元自动化科技有限公司 | Glue spraying supply system for carton packaging machine |
| CN103657913A (en) * | 2013-11-30 | 2014-03-26 | 无锡大阿福信息科技有限公司 | Sprayer nozzle structure |
| CN111992352A (en) * | 2020-08-26 | 2020-11-27 | 常州市龙鑫智能干燥科技有限公司 | Superfine liquid atomization device for spray drying |
| CN114040817A (en) * | 2019-04-18 | 2022-02-11 | 戈拉特有限公司 | Self-cleaning nozzle |
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|---|---|---|---|---|
| US3887135A (en) * | 1973-11-15 | 1975-06-03 | Shigetake Tamai | Gas-atomizing nozzle by spirally rotating gas stream |
| US4232832A (en) * | 1977-12-23 | 1980-11-11 | Gema Ag | Atomizer device |
| DE3640818C1 (en) * | 1986-11-28 | 1988-06-09 | Rudolf Jerkel | Spray head for producing an air-liquid mixture, in particular for a cooling device |
| US5181661A (en) * | 1990-06-01 | 1993-01-26 | Ab Ingredients Ltd. | Electrostatic spray apparatus |
| DE4213518A1 (en) * | 1992-04-24 | 1993-10-28 | Pierburg Gmbh | Liquid-fuel nozzle with coaxial fuel and air pipes - has annular non-throttling fuel outlet and annular air outlet with throttling effect |
| US5573392A (en) * | 1994-07-13 | 1996-11-12 | Abb Research Ltd. | Method and device for distributing fuel in a burner suitable for both liquid and gaseous fuels |
| US20060214027A1 (en) * | 2004-06-30 | 2006-09-28 | Micheli Paul R | Fluid atomizing system and method |
| JP2008018400A (en) * | 2006-07-14 | 2008-01-31 | Ikeuchi:Kk | Two fluid nozzle |
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2009
- 2009-12-30 CN CN2009102656989A patent/CN102114441A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3887135A (en) * | 1973-11-15 | 1975-06-03 | Shigetake Tamai | Gas-atomizing nozzle by spirally rotating gas stream |
| US4232832A (en) * | 1977-12-23 | 1980-11-11 | Gema Ag | Atomizer device |
| DE3640818C1 (en) * | 1986-11-28 | 1988-06-09 | Rudolf Jerkel | Spray head for producing an air-liquid mixture, in particular for a cooling device |
| US5181661A (en) * | 1990-06-01 | 1993-01-26 | Ab Ingredients Ltd. | Electrostatic spray apparatus |
| DE4213518A1 (en) * | 1992-04-24 | 1993-10-28 | Pierburg Gmbh | Liquid-fuel nozzle with coaxial fuel and air pipes - has annular non-throttling fuel outlet and annular air outlet with throttling effect |
| US5573392A (en) * | 1994-07-13 | 1996-11-12 | Abb Research Ltd. | Method and device for distributing fuel in a burner suitable for both liquid and gaseous fuels |
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| JP2008018400A (en) * | 2006-07-14 | 2008-01-31 | Ikeuchi:Kk | Two fluid nozzle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128018A (en) * | 2013-03-08 | 2013-06-05 | 上海致元自动化科技有限公司 | Glue spraying supply system for carton packaging machine |
| CN103128018B (en) * | 2013-03-08 | 2015-11-04 | 上海致元自动化科技有限公司 | A kind of glue spraying for case packing machine is for colloid system |
| CN103657913A (en) * | 2013-11-30 | 2014-03-26 | 无锡大阿福信息科技有限公司 | Sprayer nozzle structure |
| CN114040817A (en) * | 2019-04-18 | 2022-02-11 | 戈拉特有限公司 | Self-cleaning nozzle |
| CN111992352A (en) * | 2020-08-26 | 2020-11-27 | 常州市龙鑫智能干燥科技有限公司 | Superfine liquid atomization device for spray drying |
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Application publication date: 20110706 |