CN112742619A - Atomizing air cap - Google Patents
Atomizing air cap Download PDFInfo
- Publication number
- CN112742619A CN112742619A CN202011556109.5A CN202011556109A CN112742619A CN 112742619 A CN112742619 A CN 112742619A CN 202011556109 A CN202011556109 A CN 202011556109A CN 112742619 A CN112742619 A CN 112742619A
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- Prior art keywords
- hole
- nozzle
- atomizing
- air
- shaping
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- 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
Abstract
The invention discloses an atomizing air cap which comprises a cap body, wherein a mounting cavity for mounting a nozzle is arranged on the cap body, and an atomizing hole is formed in the cap body and used for guiding high-pressure gas to be sprayed out and intersecting with the spraying direction of the nozzle to form secondary atomization. The atomizing holes are used for guiding the high-pressure gas to be sprayed to intersect with a certain point of the spraying path of the nozzle, and the fluid sprayed 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 atomizing air cap.
Background
To among the coating equipment, need spout liquid coating through atomizer, through with high-pressure liquid coating in the hybrid chamber with air mixture and spout through the shower nozzle, current sprinkler structure is trompil on the nozzle usually, high-pressure liquid coating spouts through the trompil of nozzle, the atomization effect of this structure is relatively poor, leads to the spraying effect unstable.
Therefore, an atomizing air cap is needed, which is used to match with the existing nozzle to realize the secondary atomization of the coating, thereby improving the atomization effect, further improving the spraying effect, and improving the stability of the spraying effect.
Disclosure of Invention
In view of this, the present invention provides an atomizing air cap, which is used in combination with an existing nozzle to achieve secondary atomization of a coating, so as to improve an atomization effect, further improve a spraying effect, and improve stability of the spraying effect.
The atomizing air cap comprises a cap body, wherein a mounting cavity for mounting a nozzle is arranged on the cap body, and an atomizing hole is formed in the cap body and used for guiding high-pressure gas to be sprayed out and intersect with the spraying direction of the nozzle to form secondary atomization.
Further, the cap body is further provided with shaping holes, two groups of shaping holes are arranged on the cap body, 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 from the nozzle is located between the two air curtains.
Further, the atomizing hole includes atomizing inclined hole and atomizing straight hole, the atomizing inclined hole is seted up the direction and is sprayed the direction and nozzle in the nozzle front side oblique crossing in a bit, the atomizing straight hole is seted up the direction and is crossed with the position that the nozzle is close to the front end portion to make and spout to nozzle department and form the air curtain at the nozzle front end portion through atomizing straight hole spun air current.
Further, the atomizing hole includes two atomizing straight holes, the atomizing inclined hole is just to the nozzle center along radial, two the atomizing straight hole sets up and is located the both sides of atomizing inclined hole around the nozzle.
Further, 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 spraying direction of the nozzle is larger than the included angle between the opening direction of the far-end shaping hole and the spraying direction of the nozzle.
Further, the atomizing holes are provided with two groups and are symmetrically arranged on two sides of the nozzle from top to bottom, and the two groups of shaping holes are symmetrically arranged on two sides of the nozzle from left to right.
Furthermore, the included angle between the shaping hole and the spraying direction of the nozzle is smaller than the included angle between the atomizing hole and the spraying direction of the nozzle.
Further, each group of shaping holes comprises two far-end shaping holes, the diameter of each near-end shaping hole is opposite to the center of the nozzle, and the far-end shaping holes are arranged around the nozzle and are positioned on two sides of the near-end shaping holes.
Further, the cap body includes the mounting disc and protrudes in two flanges of mounting disc front side, and the through-hole formation installation cavity is seted up at the mounting disc middle part, and two flanges set up around the installation cavity longitudinal symmetry, the flange inboard is the inclined plane that inclines radially outwards from interior to exterior for the axial, the atomizing hole is seted up on the flange, the shaping hole is seted up on the mounting disc.
Further, an annular air groove is formed in the rear side of the cap body, the shaping hole is formed in the front side of the mounting disc and communicated with the air groove, an air hole I is formed in the outer side of the flange in the radial direction, the atomization hole is formed in the inner side of the flange and communicated with the air hole I, and an air hole II communicated with the air hole I is formed in the rear side of the cap body.
The invention has the beneficial effects that:
the atomizing holes are used for guiding the high-pressure gas to be sprayed to intersect with a certain point of the spraying path of the nozzle, and the fluid sprayed by the nozzle is impacted by the high-pressure gas at the intersection to realize secondary atomization, so that the structure is favorable for being matched with the existing nozzle to use, the atomizing effect of the spray head is favorably improved, and the spraying efficiency is improved; in addition, the shaping hole also guides 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 hole;
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 an air curtain wrapping the head of the spray nozzle, and fluid at the outlet of the spray hole is atomized by the air curtain, namely the atomization straight holes and the atomization inclined holes realize atomization of fluid coating at different points of the spray path of the spray nozzle, so that the atomization effect can be improved;
the shaping hole is provided with a far-end shaping hole and a near-end shaping hole, the intersection point of the far-end shaping hole and the spraying direction of the nozzle is far away from the intersection point of the near-end shaping hole and the spraying direction of the nozzle, and 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 adjustment of the spraying width and width of the nozzle is facilitated; two near-end shaping holes form two lateral air curtains on the upper side and the lower side of the middle air curtain, and three air curtains are arranged to form an approximately continuous air curtain structure in the spraying direction and the up-down direction, so that the coverage range of the air curtain can be enlarged, and the fluid form sprayed by the spray nozzle can be controlled in a larger range.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic perspective view of an atomizing air cap;
FIG. 2 is a rear view of the atomizing air cap;
FIG. 3 is a schematic view of an atomizing air cap and nozzle assembly;
FIG. 4 is a schematic sectional view A-A of FIG. 3;
FIG. 5 is a schematic sectional view of the structure of FIG. 3B-B;
Detailed Description
As shown in the figures, the embodiment provides an atomizing air cap, which includes a cap body 1, wherein an installation cavity 9 for installing a nozzle 11 is formed in the cap body, and an atomizing hole is formed in the cap body, and the atomizing hole is used for guiding high-pressure gas to be sprayed out and intersect with the spraying direction of the nozzle to form secondary atomization. Referring to fig. 1, the cap body is a circular structure, a circular installation cavity is arranged in the middle of the cap body, the nozzle 11 is installed in the installation cavity, the head of the nozzle is a spherical structure, the center of the head of the nozzle is provided with a spray hole 11a which gradually expands outwards, the spray hole is a strip-shaped hole which is elongated along the left and right direction, in addition, the inner cavity of the spray hole is a tapered cavity which is reduced from back to front, the nozzle is used for being connected with a feeding device and leading the liquid coating to be sprayed out in an atomized manner by increasing the pressure at the spray hole, the spraying direction of the nozzle is that the liquid coating is sprayed out forwards horizontally along the axial direction of the nozzle, wherein the atomization hole is externally connected with high-pressure gas supply equipment and used for guiding the high-pressure gas to be sprayed to intersect with a certain point of a spray path of the nozzle, and the fluid sprayed by the nozzle is impacted by the high-pressure gas at the intersection to realize secondary atomization, this structure does benefit to the current nozzle of cooperation and uses, does benefit to the atomization effect that improves the shower nozzle, improves spraying efficiency.
In this embodiment, the cap body is further provided with two groups of shaping holes, and the shaping holes are used for guiding the high-pressure gas to be sprayed out and forming two air curtains on two sides of the nozzle so as to ensure that the fluid sprayed out from the nozzle is located between the two air curtains. The shaping hole is also connected with external high-pressure air supply equipment and guides high-pressure gas to be sprayed out to form an air curtain, the fluid sprayed out of 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 atomizing hole includes atomizing inclined hole 2 and atomizing straight hole 3, atomizing inclined hole is seted up the direction and is sprayed the direction and spray nozzle 11 and intersect in one point in the nozzle front side to the atomizing straight hole is seted up the direction and is crossed with the position that the nozzle is close to the front end portion to make through atomizing straight hole spun air current spout to nozzle department and form the air curtain at the nozzle front end portion. As shown in fig. 4, the axis of the oblique atomization hole intersects with the spray direction of the nozzle at a point in front of the nozzle, in addition, the straight atomization hole is perpendicular to the spray direction of the nozzle, and the axis of the straight atomization hole intersects with the head of the nozzle, of course, the straight atomization hole can also have a certain angle with the spray direction of the nozzle, because the nozzle head is of a hemispherical structure, high-pressure gas sprayed from the straight atomization hole flows along the outer surface of the spray head and forms an air curtain wrapping the head of the nozzle, and atomizes fluid at the outlet of the spray hole through the air curtain, and the straight atomization hole and the oblique atomization hole atomize fluid paint at different points of the spray path of the nozzle, thereby improving the atomization effect.
In this embodiment, the atomizing hole includes two atomizing straight holes, atomizing inclined hole 2 is just to the nozzle center along radial, two atomizing straight holes set up and lie in the both sides of atomizing inclined hole around the nozzle. Combine fig. 3 to show, the inclined hole that atomizes is just to the nozzle in radial direction, and the straight hole that atomizes is located the left and right sides of inclined hole that atomizes, and three hole forms triangle arrangement structure, and of course, three hole also can control and arrange on same straight line, and the setting up of two straight holes that atomize does benefit to and makes the shower nozzle head form the comparatively complete air curtain structure that is the parcel form, does benefit to the atomization effect that improves the nozzle.
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 an opening direction of the proximal shaping hole and a spraying direction of the nozzle is larger than an included angle between the opening direction of the distal shaping hole and the spraying direction of the nozzle. With reference to fig. 1 and 5, an included angle α between the proximal shaping hole 4 and the nozzle spraying direction is 37.5 °, wherein an included angle between the distal shaping hole 5 and the nozzle spraying direction is 18 °, that is, an intersection point between the distal shaping hole and the nozzle spraying direction is farther than an intersection point between the proximal shaping hole and the nozzle spraying direction, that is, two air curtains with different included angles are formed on two sides of the nozzle, that is, the shaping effect of the two air curtains is ensured, and the adjustment of the width of the nozzle is facilitated.
In this embodiment, the atomizing hole is provided with two sets and the longitudinal symmetry arranges in the nozzle both sides, and two sets of plastic hole bilateral symmetry sets up in the nozzle both sides. The up-down and left-right directions are the same as the directions in fig. 3, as shown in fig. 3, the atomizing holes are arranged at the two sides of the height direction of the nozzle spray hole, the shaping holes are arranged at the two sides of the length direction of the nozzle spray hole, the function of secondary atomization to the nozzle is considered through the arrangement structure, but also is beneficial to controlling the spraying width of the nozzle, the spraying inclined holes in the other two groups of the atomizing holes are intersected with the spraying direction of the nozzle at one point to achieve good atomizing effect, and two atomizing inclined holes can offset partial atress each other, prevent that the nozzle injection direction from being strikeed and taking place the skew, guarantee the stability of nozzle injection direction, two sets of atomizing straight holes that correspond in two sets of atomizing holes provide high-pressure draught in the upper and lower direction of nozzle, do benefit to the air curtain structure that forms complete inclusion at the nozzle front end, do benefit to the atomizing in nozzle orifice exit, two sets of atomizing straight hole atress also can offset each other, prevent that nozzle spun fluid from strikeing the efflux direction and taking place the skew.
In this embodiment, an included angle between the shaping hole and the spraying direction of the nozzle is smaller than an included angle between the atomizing hole and the spraying direction of the nozzle. As shown in the combined figure 4, the included angle beta between the atomizing hole and the spraying direction of the nozzle is 51 degrees, so that the intersection point of the atomizing hole and the spraying direction of the nozzle is positioned between the two air curtains formed by the shaping holes, the restriction of the shaping holes on the secondary atomization of the atomizing hole is facilitated, and the jet flow caused by the secondary atomization is prevented from being excessively dispersed from left to right.
In this embodiment, each set of shaping holes includes two distal shaping holes 5, the proximal shaping hole 4 is diametrically opposite to the center of the nozzle, and the distal shaping holes are disposed around the nozzle and located on both sides of the proximal shaping hole. As shown in fig. 3 and 5, a middle air curtain is formed in the middle of one 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 an approximately continuous air curtain structure is formed in the spraying direction and the up-and-down direction by the three air curtains, so that the coverage area of the air curtains can be enlarged, and the fluid form sprayed by the spray nozzles can be controlled in a larger range.
In this embodiment, cap body 1 includes mounting disc 1a and two flanges 1b protruding in the mounting disc front side, and the through-hole formation installation cavity is seted up at mounting disc 1a middle part, and two flanges set up around the installation cavity longitudinal symmetry, the flange inboard is the inclined plane that the axial leaned out radially from interior to exterior, the atomizing hole is seted up on the flange, the shaping hole is seted up on the mounting disc. The inner inclined plane of the flange is an inner conical inclined plane, so that the inner side surface of the flange is favorably provided with an inclined hole, the arrangement of the flange is favorable for the overall spatial layout of the atomizing hole and the shaping hole, in addition, the arrangement of the flange also provides a larger opening space for an air passage of the atomizing hole, the two flanges are arranged up and down, the forward protruding length of the flange exceeds the intersection point of the atomizing hole and the nozzle, and the two flanges can be used as a physical shaping structure in the up and down direction to prevent the paint sprayed by the nozzle from excessively dispersing in the up and down direction;
referring to fig. 4 and 5, the opening of the mounting plate is a stepped hole with a small front and a large rear, the stepped hole is used as a mounting cavity, a mounting seat 12 is correspondingly mounted in the mounting cavity, the outer circle of the mounting seat is of a stepped shaft structure with a small front and a large rear matched with the mounting cavity, the mounting seat is mounted in the mounting cavity from back to front, the shaft shoulder of the mounting seat is abutted forwards in the mounting cavity to form axial positioning, the outer circle of the mounting seat and the inner circle before mounting are in sealing fit through a sealing ring, a nozzle mounting hole 13 is correspondingly formed in the middle of the mounting seat, the nozzle mounting hole and the mounting cavity are coaxially arranged, the nozzle mounting hole is of a stepped hole with a small front and a large rear, the outer circle of the nozzle 11 is of a stepped shaft structure with a small front and a large rear matched with the nozzle mounting hole, the nozzle is mounted in the nozzle mounting hole from back to front, the head of the nozzle extends out of the nozzle mounting, the nominal diameter of the threaded hole is larger than the major diameter of the nozzle mounting hole, the threaded hole and the nozzle mounting hole are coaxially arranged and form a two-stage stepped hole structure together with the nozzle mounting hole, the threaded hole is used for being connected with an external pipeline to convey liquid coating for the nozzle, and a sealing ring is arranged between the rear end part of the nozzle and the pipeline.
In this embodiment, an annular air groove 6 is formed in the rear side of the cap body 1, the shaping hole is formed in the front side of the mounting disc and communicated with the air groove, an air hole i 7 is formed in the outer side of the flange in the radial direction, the atomization hole is formed in the inner side of the flange and communicated with the air hole i, and an air hole ii 8 communicated with the air hole i is formed in the rear side of the cap body 1. Wherein the gas tank sets up with the installation intracavity is coaxial, and radially seting up of gas pocket I is convenient for atomize the seting up of inclined hole and the straight hole of atomizing, and gas pocket I is sealed through sealed end cap 14, and the air current passageway that gas pocket and plastic hole formed and gas pocket I, gas pocket II and atomization hole formed that this moment gas tank and plastic hole formed are independent each other, and two air current passageways can be respectively external air feeder independent air feed, do benefit to independent regulation atomization effect and spraying broad width.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. An atomizing air cap, characterized in that: the high-pressure gas atomizing device comprises a cap body, wherein a mounting cavity for mounting a nozzle is formed in the cap body, and an atomizing hole is formed in the cap body and is used for guiding high-pressure gas to be sprayed out and intersect with the spraying direction of the nozzle to form secondary atomization.
2. The atomizing air cap of claim 1, wherein: the cap body is further provided with two groups of shaping holes, 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 from the nozzle is located between the two air curtains.
3. The atomizing air cap of claim 1, wherein: the atomizing hole includes atomizing inclined hole and atomizing straight hole, the atomizing inclined hole is seted up the direction and is sprayed the direction and nozzle spray direction in the nozzle front side oblique crossing in a bit, the atomizing straight hole is seted up the direction and is crossed with the position that the nozzle is close to the front end portion to make and spout to nozzle department and tip formation air curtain before the nozzle through atomizing straight hole spun air current.
4. The atomizing air cap of claim 3, wherein: the atomizing hole includes two atomizing straight holes, the atomizing inclined hole is just to the nozzle center along radial, two the atomizing straight hole is around the nozzle setting and be located the both sides of atomizing inclined hole.
5. The atomizing air cap of claim 2, wherein: 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 spraying direction of the nozzle is larger than that between the far-end shaping hole and the spraying direction of the nozzle.
6. The atomizing air cap of claim 1, wherein: the atomizing holes are provided with two groups and are symmetrically arranged at two sides of the nozzle from top to bottom, and the two groups of shaping holes are symmetrically arranged at two sides of the nozzle from left to right.
7. The atomizing air cap of claim 6, wherein: the included angle between the shaping hole and the spraying direction of the nozzle is smaller than that between the atomizing hole and the spraying direction of the nozzle.
8. The atomizing air cap of claim 5, wherein: each group of shaping holes comprises two far-end shaping holes, the diameter of each near-end shaping hole is opposite to the center of the nozzle, and the far-end shaping holes are arranged around the nozzle and are positioned on two sides of the near-end shaping holes.
9. The atomizing air cap of claim 6, wherein: the cap body includes the mounting disc and protrudes in two flanges of mounting disc front side, and the through-hole formation installation cavity is seted up at the mounting disc middle part, and two flanges set up around the installation cavity longitudinal symmetry, the flange inboard is the inclined plane that inclines radially outwards from interior to exterior for the axial, the atomizing hole is seted up on the flange, the shaping hole is seted up on the mounting disc.
10. The atomizing air cap of claim 9, wherein: the novel cap is characterized in that an annular air groove is formed in the rear side of the cap body, the shaping hole is formed in the front side of the mounting disc and communicated with the air groove, an air hole I is formed in the outer side of the flange in the radial direction, the atomization hole is formed in the inner side of the flange and communicated with the air hole I, and an air hole II communicated with the air hole I is formed in the rear side of the cap body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556109.5A CN112742619A (en) | 2020-12-24 | 2020-12-24 | Atomizing air cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556109.5A CN112742619A (en) | 2020-12-24 | 2020-12-24 | Atomizing air cap |
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| Publication Number | Publication Date |
|---|---|
| CN112742619A true CN112742619A (en) | 2021-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011556109.5A Pending CN112742619A (en) | 2020-12-24 | 2020-12-24 | Atomizing air cap |
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| CN (1) | CN112742619A (en) |
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| 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 |
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| 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 |
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2020
- 2020-12-24 CN CN202011556109.5A patent/CN112742619A/en active Pending
Patent Citations (10)
| 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 |
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