CN112742619B - Atomized air cap - Google Patents
Atomized air cap Download PDFInfo
- Publication number
- CN112742619B CN112742619B CN202011556109.5A CN202011556109A CN112742619B CN 112742619 B CN112742619 B CN 112742619B CN 202011556109 A CN202011556109 A CN 202011556109A CN 112742619 B CN112742619 B CN 112742619B
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- CN
- China
- Prior art keywords
- nozzle
- hole
- atomizing
- shaping
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000889 atomisation Methods 0.000 claims abstract description 62
- 239000007921 spray Substances 0.000 claims abstract description 46
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000007493 shaping process Methods 0.000 claims description 69
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000003973 paint Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses an atomization air cap which comprises a cap body, wherein a mounting cavity for mounting a nozzle is arranged on the cap body, an atomization hole is formed in the cap body and used for guiding high-pressure air to spray out and intersecting with the spraying direction of the nozzle to form secondary atomization. The atomization hole is used for guiding high-pressure gas to spray out and intersect with a certain point of the spray path of the nozzle, and fluid sprayed out by the nozzle is impacted by the high-pressure gas at the intersection to realize secondary atomization.
Description
Technical Field
The invention relates to the technical field of coating, in particular to an atomized air cap.
Background
In the coating equipment, the liquid coating needs to be sprayed out through an atomization spray nozzle, the high-pressure liquid coating is mixed with air in a mixing cavity and sprayed out through the spray nozzle, the existing spray nozzle structure is usually provided with holes on a nozzle, the high-pressure liquid coating is sprayed out through the holes of the nozzle, the atomization effect of the structure is poor, and the spraying effect is unstable.
Therefore, there is a need for an atomizing air cap that cooperates with the existing nozzle to achieve secondary atomization of the coating, improves the atomization effect, and thus improves the spray effect, and improves the stability of the spray effect.
Disclosure of Invention
In view of the above, the present invention provides an atomized air cap, which is matched with the existing nozzle to realize secondary atomization of the paint, so as to improve the atomization effect, further improve the spraying effect and improve the stability of the spraying effect.
The atomizing air cap comprises a cap body, wherein a mounting cavity for mounting a nozzle is formed in the cap body, atomizing holes are formed in the cap body, and the atomizing holes are used for guiding high-pressure air to spray out and intersect with the spraying direction of the nozzle to form secondary atomization.
Further, shaping holes are further formed in the cap body, two groups of shaping holes are formed in the shaping holes, the shaping holes are used for guiding high-pressure gas to be sprayed out, and two air curtains are formed on two sides of the nozzle so as to ensure that fluid sprayed out by the nozzle is located between the two air curtains.
Further, the atomizing hole includes atomizing inclined hole and atomizing straight hole, the direction is seted up to the atomizing inclined hole and the nozzle jet direction is at a point in the skew of nozzle front side, the direction is seted up to the atomizing straight hole intersects with the position that the nozzle is close to the tip to make through atomizing straight hole spun air current spray to nozzle department and form the air curtain at the nozzle tip.
Further, the atomizing hole comprises two atomizing straight holes, the atomizing inclined holes are opposite to the center of the nozzle in the radial direction, and the two atomizing straight holes are arranged around the nozzle and are positioned on two sides of the atomizing inclined holes.
Further, each group of shaping holes comprises a proximal shaping hole and a distal shaping hole, and the included angle between the opening direction of the proximal shaping hole and the injection direction of the nozzle is larger than the included angle between the distal shaping hole and the injection direction of the nozzle.
Further, the atomizing holes are provided with two groups which are vertically and symmetrically arranged at two sides of the nozzle, and the two groups of shaping holes are symmetrically arranged at two sides of the nozzle.
Further, the included angle between the shaping hole and the spray direction of the nozzle is smaller than the included angle between the atomizing hole and the spray direction of the nozzle.
Further, each set of shaping apertures includes two distal shaping apertures disposed radially opposite the center of the nozzle and on either side of the proximal shaping apertures.
Further, the cap body comprises a mounting disc and two flanges protruding from the front side of the mounting disc, a through hole is formed in the middle of the mounting disc to form a mounting cavity, the two flanges are symmetrically arranged up and down around the mounting cavity, the inner sides of the flanges are inclined planes which incline outwards along the radial direction from inside to outside in the axial direction, the atomization holes are formed in the flanges, and the shaping holes are formed in the mounting disc.
Further, annular air groove has been seted up to the cap body rear side, the plastic hole is seted up from the mounting disc front side and is linked together with the air groove, gas pocket I has been radially seted up in the flange outside, the atomizing hole is seted up from the flange inboard and is linked together with gas pocket I, the gas pocket II with gas pocket I intercommunication has been seted up to the cap body rear side.
The invention has the beneficial effects that:
The atomization hole is used for guiding the high-pressure gas to spray out and intersect with a certain point of the spray path of the nozzle, and the fluid sprayed out by the nozzle is impacted by the high-pressure gas at the intersection to realize secondary atomization; in addition, the shaping holes also guide high-pressure gas to be sprayed out to form two air curtains on two sides of the nozzle, the fluid sprayed out of the nozzle is prevented from being excessively dispersed through the blocking effect of the air curtains, and the spraying width of the nozzle can be adjusted by adjusting the gas flow and the pressure in the shaping holes;
according to the invention, the atomization holes are provided with the atomization inclined holes and the atomization straight holes, high-pressure gas sprayed by the atomization straight holes flows along the outer surface of the spray head and forms the air curtain wrapping the nozzle head, and the air curtain is used for atomizing fluid at the outlet of the spray hole, namely, the atomization straight holes and the atomization inclined holes realize the atomization of fluid paint at different points of the spray path of the spray nozzle, so that the atomization effect can be improved;
The shaping holes are provided with the far-end shaping holes and the near-end shaping holes, the intersection point of the far-end shaping holes and the jet direction of the nozzle is far away from the intersection point of the near-end shaping holes and the jet direction of the nozzle, two air curtains with different included angles are formed on two sides of the nozzle, so that the shaping effect of the two air curtains is ensured, and the width of the jet width of the nozzle is also favorably adjusted; the two near-end shaping holes form two side air curtains on the upper side and the lower side of the middle air curtain, and the arrangement of three air curtains is beneficial to forming an approximately continuous air curtain structure in the spraying direction and the upper and lower directions, so that the air curtain coverage range can be enlarged, and the fluid form sprayed by the nozzle can be controlled in a larger range.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic perspective view of an atomizing air cap;
FIG. 2 is a schematic rear view of an atomizing air cap;
FIG. 3 is a schematic view of an assembly of an atomizing air cap and a nozzle;
FIG. 4 is a schematic view of the cross-sectional structure of A-A of FIG. 3;
FIG. 5 is a schematic view of the cross-sectional B-B structure of FIG. 3;
Detailed Description
As shown in the figure, the embodiment provides an atomization air cap, which comprises a cap body 1, wherein a mounting cavity 9 for mounting a nozzle 11 is arranged on the cap body, an atomization hole is formed in the cap body, and the atomization hole is used for guiding high-pressure air to spray out and intersect with the spraying direction of the nozzle to form secondary atomization. In combination with the illustration of fig. 1, the cap body is circular structure, there is circular installation cavity in the middle part of the cap body, the nozzle 11 is installed in this installation cavity, the nozzle head is spherical structure, the outside orifice 11a that enlarges gradually is offered to the head center department of nozzle, the orifice is along the elongated bar hole of left and right sides direction, in addition orifice inner chamber is the toper chamber that reduces from back to front, the nozzle is used for being connected with the feed equipment and makes liquid coating pass through orifice department pressure rise and atomizing blowout, the direction of nozzle blowout is for being horizontal forward blowout along the axial direction of nozzle, wherein the atomizing hole is used for external high-pressure gas supply equipment and guides high-pressure gas blowout to cross with the nozzle jet path department, make the fluid of nozzle blowout by high-pressure gas impact realize secondary atomization in the department of crossing, this structure does benefit to the cooperation current nozzle use, do benefit to the improvement shower nozzle's atomization effect, improve spraying efficiency.
In this embodiment, the cap body is further provided with shaping holes, the shaping holes are provided with two groups, and the shaping holes are used for guiding high-pressure gas to be sprayed out and forming two air curtains on two sides of the nozzle so as to ensure that fluid sprayed out by the nozzle is located between the two air curtains. The shaping hole is also connected with external high-pressure gas-feeding equipment and guides high-pressure gas to spray out to form an air curtain, the fluid sprayed out from the nozzle is prevented from being excessively dispersed through the blocking effect of the air curtain, and the spraying width of the nozzle can be adjusted by adjusting the gas flow and the pressure in the shaping hole.
In this embodiment, the atomization holes include an atomization inclined hole 2 and an atomization straight hole 3, the direction of opening the atomization inclined hole and the spraying direction of the nozzle 11 are inclined at a point at the front side of the nozzle, and the direction of opening the atomization straight hole intersects with the position of the nozzle near the front end, so that the air flow sprayed out through the atomization straight hole is sprayed to the nozzle and forms an air curtain at the front end of the nozzle. In addition, the axis of the atomization straight hole is perpendicular to the spraying direction of the nozzle, and the axis of the atomization straight hole is intersected with the position of the head of the nozzle, of course, the atomization straight hole can also have a certain angle with the spraying direction of the nozzle, because the nozzle head is of a hemispherical structure, high-pressure gas sprayed out of the atomization straight hole flows along the outer surface of the nozzle head and forms an air curtain wrapping the nozzle head, fluid at the outlet of the nozzle is atomized through the air curtain, and the atomization straight hole realize atomization of fluid paint at different points of the spraying path of the nozzle, so that the atomization effect can be improved.
In this embodiment, the atomization hole includes two atomization straight holes, the atomization inclined hole 2 is opposite to the center of the nozzle in the radial direction, and the two atomization straight holes are disposed around the nozzle and located at two sides of the atomization inclined hole. In combination with the illustration of fig. 3, the atomization inclined holes are opposite to the nozzle in the radial direction, the atomization straight holes are positioned at the left side and the right side of the atomization inclined holes, and the three holes form a triangular arrangement structure, of course, the three holes can be arranged on the same straight line left and right, and the arrangement of the two atomization straight holes is beneficial to enabling the head of the nozzle to form a relatively complete air curtain structure in a wrapping shape, so that the atomization effect of the nozzle is beneficial to being improved.
In this embodiment, each group of shaping holes includes a proximal shaping hole 4 and a distal shaping hole 5, and an included angle between the opening direction of the proximal shaping hole and the injection direction of the nozzle is larger than an included angle between the distal shaping hole and the injection direction of the nozzle. As shown in fig. 5 and 1, the included angle α between the proximal shaping hole 4 and the nozzle injection direction is 37.5 °, where the included angle between the distal shaping hole 5 and the nozzle injection direction is 18 °, i.e. the intersection point between the distal shaping hole and the nozzle injection direction is far away from the intersection point between the proximal shaping hole and the nozzle injection direction, i.e. two air curtains with different included angles are formed on two sides of the nozzle, i.e. the shaping effect of the two air curtains is ensured, and the width of the nozzle injection width is also adjusted.
In this embodiment, the atomizing holes are provided with two groups and are symmetrically arranged at two sides of the nozzle, and the two groups of shaping holes are symmetrically arranged at two sides of the nozzle. The direction of the upper, lower, left and right is consistent with that in fig. 3, as shown in fig. 3, the atomizing holes are arranged on two sides of the height direction of the nozzle spray hole, the shaping holes are arranged on two sides of the length direction of the nozzle spray hole, the function of secondary atomization of the nozzle is realized through an arrangement structure, the spray width of the nozzle is controlled, the atomizing inclined holes in the other two groups of atomizing holes and the spray direction of the nozzle intersect at one point, a good atomizing effect is achieved, the two atomizing inclined holes can offset part of the stress, the spray direction of the nozzle is prevented from being offset by impact, the stability of the spray direction of the nozzle is ensured, the corresponding two groups of atomizing straight holes in the two groups of atomizing holes provide high-pressure air flow in the upper and lower directions of the nozzle, the air curtain structure of a complete inclusion is formed at the front end part of the nozzle, the atomization of the nozzle spray hole is facilitated, the stress of the two groups of atomizing straight holes can offset each other, and the fluid sprayed out of the nozzle is prevented from being offset by the impact jet direction.
In this embodiment, the included angle between the shaping hole and the injection direction of the nozzle is smaller than the included angle between the atomizing hole and the injection direction of the nozzle. And in combination with the illustration of fig. 4, the included angle beta between the atomizing hole and the jet direction of the nozzle is 51 degrees, so that the intersection point of the atomizing hole and the jet direction of the nozzle is positioned between two air curtains formed by the shaping hole, which is favorable for restraining secondary atomization of the atomizing hole by the shaping hole and prevents jet fluid from being excessively dispersed leftwards and rightwards due to secondary atomization.
In this embodiment, each set of shaping apertures comprises two distal shaping apertures 5, the proximal shaping apertures 4 being radially opposite the center of the nozzle, the distal shaping apertures being disposed around the nozzle and on either side of the proximal shaping apertures. With reference to fig. 3 and 5, a middle air curtain is formed in the middle of the near-end shaping hole, two side air curtains are formed on the upper side and the lower side of the middle air curtain by the two near-end shaping holes, and the arrangement of three air curtains is beneficial to forming an approximately continuous air curtain structure in the spraying direction and the upper and lower directions, so that the coverage area of the air curtain can be increased, and the fluid form sprayed by the nozzle can be controlled in a larger range.
In this embodiment, the cap body 1 includes a mounting plate 1a and two flanges 1b protruding from the front side of the mounting plate, the middle of the mounting plate 1a is provided with a through hole to form a mounting cavity, the two flanges are vertically symmetrically arranged around the mounting cavity, the inner side of the flange is an inclined plane inclined outwards radially from inside to outside in the axial direction, the atomization holes are formed in the flange, and the shaping holes are formed in the mounting plate. The inner inclined surface of the flange is an inner conical inclined surface, so that the inner side surface of the flange is favorable for obliquely forming holes, the arrangement of the flange is favorable for the overall space layout of the atomizing holes and the shaping holes, in addition, a larger opening space is provided for an air passage of the atomizing holes, the two flanges are arranged up and down, the forward protruding length of the flange exceeds the intersection point of the atomizing holes and the nozzles, the flange can be used as a physical shaping structure in the up-down direction, and the paint sprayed by the nozzles is prevented from being excessively dispersed in the up-down direction;
As shown in fig. 4 and 5, the mounting plate is provided with a front small and rear large stepped hole, the stepped hole is used as a mounting cavity, a mounting seat 12 is correspondingly arranged in the mounting cavity, the outer circle of the mounting seat is of a front small and rear large stepped shaft structure matched with the mounting cavity, the mounting seat is arranged in the mounting cavity from back to front, the shaft shoulder of the mounting seat is propped forwards to form axial positioning at the shaft shoulder in the mounting cavity, the outer circle of the mounting seat is in sealing fit with the inner circle before mounting, the middle of the mounting seat is correspondingly provided with a spray head mounting hole 13, the spray head mounting hole is coaxially arranged with the mounting cavity, the spray head mounting hole is of a front small and rear large stepped shaft structure matched with the spray head mounting hole, the spray head is arranged in the spray head mounting hole from back to front, the rear end face of the mounting seat 12 is provided with a threaded hole 13, the nominal diameter of the threaded hole is larger than the large diameter of the spray head mounting hole, the threaded hole is coaxially arranged with the spray head mounting hole and forms a two-stage stepped hole structure with the spray head mounting hole, the threaded hole is used for being connected with an external pipeline, and the liquid pipeline is arranged between the spray head and the end part of the spray head and the spray head.
In this embodiment, annular air groove 6 has been seted up to cap body 1 rear side, the plastic hole is seted up from the mounting disc front side and is linked together with the air groove, gas pocket I7 has been radially seted up in the flange outside, the atomizing hole is seted up from the flange inboard and is linked together with gas pocket I, gas pocket II 8 with gas pocket I intercommunication has been seted up to cap body 1 rear side. Wherein coaxial setting in air tank and the installation cavity, the radial seting up of gas pocket I, the seting up of the inclined hole of being convenient for atomize and atomizing straight hole, gas pocket I is sealed through sealing plug 14, and the air current passageway that air tank and plastic hole formed and air pocket I, gas pocket II and atomizing hole formed are mutually independent this moment, and two air current passageways can external air feed equipment independently air feed respectively, do benefit to the independent regulation atomization effect and spray coating broad width.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (5)
1. An atomizing air cap, characterized in that: the spray nozzle comprises a cap body, wherein a mounting cavity for mounting the spray nozzle is arranged on the cap body, an atomization hole is formed in the cap body, and the atomization hole is used for guiding high-pressure gas to spray out and intersecting with the spray direction of the spray nozzle to form secondary atomization; the cap body is also provided with shaping holes, two groups of shaping holes are arranged, and the shaping holes are used for guiding high-pressure gas to be sprayed out and forming two air curtains on two sides of the nozzle so as to ensure that fluid sprayed out by the nozzle is positioned between the two air curtains; each group of shaping holes comprises a near-end shaping hole and a far-end shaping hole, and the included angle between the opening direction of the near-end shaping hole and the injection direction of the nozzle is larger than the included angle between the far-end shaping hole and the injection direction of the nozzle; the two groups of shaping holes are symmetrically arranged on two sides of the nozzle; the atomizing hole comprises an atomizing inclined hole and an atomizing straight hole, the opening direction of the atomizing inclined hole and the spraying direction of the nozzle are obliquely intersected at a point at the front side of the nozzle, and the opening direction of the atomizing straight hole is intersected with the position of the nozzle close to the front end part, so that air flow sprayed through the atomizing straight hole is sprayed to the nozzle and forms an air curtain at the front end part of the nozzle; the atomizing hole comprises two atomizing straight holes, the atomizing inclined holes are opposite to the center of the nozzle in the radial direction, and the two atomizing straight holes are arranged around the nozzle and are positioned on two sides of the atomizing inclined holes.
2. The atomizing air cap set forth in claim 1, wherein: the included angle between the shaping hole and the spray direction of the nozzle is smaller than the included angle between the atomizing hole and the spray direction of the nozzle.
3. The atomizing air cap set forth in claim 1, wherein: each set of shaping apertures includes two distal shaping apertures radially opposite the center of the nozzle, the distal shaping apertures disposed about the nozzle and on either side of the proximal shaping apertures.
4. The atomizing air cap set forth in claim 1, wherein: the cap body comprises a mounting disc and two flanges protruding from the front side of the mounting disc, a through hole is formed in the middle of the mounting disc to form a mounting cavity, the two flanges are arranged around the mounting cavity in an up-down symmetrical mode, the inner sides of the flanges are inclined planes inclining outwards along the radial direction from inside to outside in the axial direction, the atomization holes are formed in the flanges, and the shaping holes are formed in the mounting disc.
5. The atomizing air cap set forth in claim 4, wherein: annular air groove has been seted up to the cap body rear side, the plastic hole is seted up from the mounting disc front side and is linked together with the air groove, gas pocket I has been radially seted up in the flange outside, the atomizing hole is seted up from the flange inboard and is linked together with gas pocket I, the gas pocket II with gas pocket I intercommunication has been seted up to the cap body rear side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556109.5A CN112742619B (en) | 2020-12-24 | 2020-12-24 | Atomized air cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556109.5A CN112742619B (en) | 2020-12-24 | 2020-12-24 | Atomized air cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112742619A CN112742619A (en) | 2021-05-04 |
| CN112742619B true CN112742619B (en) | 2024-05-28 |
Family
ID=75647592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011556109.5A Active CN112742619B (en) | 2020-12-24 | 2020-12-24 | Atomized air cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112742619B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1902004A (en) * | 2003-12-30 | 2007-01-24 | 3M创新有限公司 | Liquid spray gun with manually rotatable frictionally retained air cap |
| CN101291739A (en) * | 2005-08-26 | 2008-10-22 | 喷洒系统公司 | Improved external mix air atomizing spray nozzle assembly |
| CN202045023U (en) * | 2011-04-25 | 2011-11-23 | 骆远雄 | Improved spray nozzle and spray gun |
| CN107427851A (en) * | 2015-03-05 | 2017-12-01 | 涂层国外知识产权有限公司 | With the method to ensure the spray gun of the hollow needle of gravity feeding and use the spray gun |
| CN107427852A (en) * | 2015-03-05 | 2017-12-01 | 涂层国外知识产权有限公司 | Spray gun with high transfer efficiency and the method using the spray gun |
| CN108284009A (en) * | 2018-02-06 | 2018-07-17 | 东莞市长原喷雾技术有限公司 | A kind of external mixing type atomizer |
| CN209968697U (en) * | 2019-04-29 | 2020-01-21 | 吴小姣 | Air nozzle with wide-angle injection |
| CN110756345A (en) * | 2013-06-07 | 2020-02-07 | 涂层国外知识产权有限公司 | Spray gun and spraying method |
| CN214347278U (en) * | 2020-12-24 | 2021-10-08 | 中国船舶重工集团长江科技有限公司 | Secondary atomizing air cap |
-
2020
- 2020-12-24 CN CN202011556109.5A patent/CN112742619B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1902004A (en) * | 2003-12-30 | 2007-01-24 | 3M创新有限公司 | Liquid spray gun with manually rotatable frictionally retained air cap |
| CN101291739A (en) * | 2005-08-26 | 2008-10-22 | 喷洒系统公司 | Improved external mix air atomizing spray nozzle assembly |
| CN202045023U (en) * | 2011-04-25 | 2011-11-23 | 骆远雄 | Improved spray nozzle and spray gun |
| CN110756345A (en) * | 2013-06-07 | 2020-02-07 | 涂层国外知识产权有限公司 | Spray gun and spraying method |
| CN107427851A (en) * | 2015-03-05 | 2017-12-01 | 涂层国外知识产权有限公司 | With the method to ensure the spray gun of the hollow needle of gravity feeding and use the spray gun |
| CN107427852A (en) * | 2015-03-05 | 2017-12-01 | 涂层国外知识产权有限公司 | Spray gun with high transfer efficiency and the method using the spray gun |
| CN108284009A (en) * | 2018-02-06 | 2018-07-17 | 东莞市长原喷雾技术有限公司 | A kind of external mixing type atomizer |
| CN209968697U (en) * | 2019-04-29 | 2020-01-21 | 吴小姣 | Air nozzle with wide-angle injection |
| CN214347278U (en) * | 2020-12-24 | 2021-10-08 | 中国船舶重工集团长江科技有限公司 | Secondary atomizing air cap |
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|---|---|
| CN112742619A (en) | 2021-05-04 |
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