JPH0220300B2 - - Google Patents
Info
- Publication number
- JPH0220300B2 JPH0220300B2 JP3578084A JP3578084A JPH0220300B2 JP H0220300 B2 JPH0220300 B2 JP H0220300B2 JP 3578084 A JP3578084 A JP 3578084A JP 3578084 A JP3578084 A JP 3578084A JP H0220300 B2 JPH0220300 B2 JP H0220300B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- shaped
- air
- spray
- paint
- 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.)
- Expired
Links
- 239000007921 spray Substances 0.000 claims description 29
- 239000003973 paint Substances 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory 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
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
- B05B7/068—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet the annular gas outlet being supplied by a gas conduit having an axially concave curved internal surface just upstream said outlet
-
- 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
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
Landscapes
- Nozzles (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明は、加圧気液併用型の噴霧ノズルに関す
る。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a pressurized gas-liquid type spray nozzle.
（従来技術）
塗料を加圧空気により吸引しつつ霧化するエア
ースプレーノズルと、塗料だけを加圧噴射して霧
化するエアレススプレーノズルの長所を兼ね備え
た噴霧ノズルとして、扇形噴霧用オリフイス型塗
料ノズルの前方に、この塗料ノズルを包囲するよ
うに扇形空気噴出用の空気ノズルを設けた加圧気
液併用型の噴霧ノズルがある。この種の噴霧ノズ
ルは、構造が簡単でしかも塗料の霧化と飛散防止
の面で優れているが、反面、塗料ノズルから噴射
される扇形の噴霧が空気ノズルからの扇形空気流
により包囲されている関係上、扇形噴霧の角度が
小さく抑制されて広角噴霧を得ることが困難にな
るといつた問題があるほか霧化を促進するために
空気ノズルに供給する空気圧を高めると、噴霧の
形状が乱れて良好な塗装が得られないといつた不
都合が生じる。(Prior art) An orifice-type paint for fan-shaped spraying is a spray nozzle that combines the advantages of an air spray nozzle that atomizes paint while suctioning it with pressurized air, and an airless spray nozzle that sprays only paint under pressure and atomizes it. In front of the nozzle, there is a pressurized air-liquid type spray nozzle that has an air nozzle for ejecting fan-shaped air so as to surround the paint nozzle. This type of spray nozzle has a simple structure and is excellent in atomizing paint and preventing scattering. However, on the other hand, the fan-shaped spray ejected from the paint nozzle is surrounded by the fan-shaped air flow from the air nozzle. Because of this, the angle of the fan-shaped spray is suppressed to a small value, making it difficult to obtain a wide-angle spray.In addition, when the air pressure supplied to the air nozzle is increased to promote atomization, the shape of the spray becomes disordered. This may cause problems such as not being able to obtain a good coating.
このような問題に対して第４図に見られるよう
に塗料ノズルａの側面に一対の空気ノズルｂ，ｂ
を対向配設し、ここからの空気流を塗料ノズルａ
から噴射した扇形噴霧に側面から衝触させるよう
にした噴霧ノズルが提案されているが、このよう
な構造では噴霧の角度を挟めてしまうといつた問
題は解消するとしても、空気ノズルｂ，ｂの心合
わせが困難でしかも各空気ノズルｂ，ｂからの空
気流に差が生じ易いためこれが噴霧に影響してむ
しろそのパターンを乱してしまうといつた問題が
生じる。 To solve this problem, as shown in Fig. 4, a pair of air nozzles b and b are installed on the side of the paint nozzle a.
are arranged facing each other, and the air flow from here is directed to the paint nozzle a.
A spray nozzle has been proposed in which the fan-shaped spray ejected from the air nozzle collides from the side, but although this structure solves the problem of pinching the spray angle, Since it is difficult to center the air nozzles b, and differences tend to occur in the air flow from each air nozzle b, this causes a problem in that this affects the spray and rather disturbs the spray pattern.
（目的）
本発明はこのような問題に鑑みてなされたもの
であつて、その目的とするところは、噴霧角を挟
縮することなく、しかも噴霧パターンに乱れが生
じない構造簡単な加圧気液併用型の噴霧ノズルを
提供することにある。(Purpose) The present invention was made in view of the above problems, and its purpose is to create a pressurized gas-liquid with a simple structure that does not narrow the spray angle and cause no disturbance in the spray pattern. An object of the present invention is to provide a combination type spray nozzle.
（構成）
そこで、以下に本発明の詳細を図示した実施例
に基づいて説明する。(Structure) Therefore, details of the present invention will be described below based on illustrated embodiments.
図面は、本発明の一実施例を示すものであつ
て、図中符号１は、前面中央にほぼ長方形のボス
部１１を突出形成した塗料ノズル２のホルダー
で、その頂面に貫通した塗料１２には、超硬質材
よりなる扇形噴霧用オリフイス型の塗料ノズル２
がその先端に削成したリツプ状の切込溝２１を頂
面の長手方向に向けて圧入嵌合されており、また
ホルダー１に設けた通気孔１３は、ボス部１１の
周囲に削成した環状の通気溝１４内に開口し、こ
こから比較的低圧の空気を後述するオリフイス型
噴気孔３４より噴出させるように構成されてい
る。 The drawing shows one embodiment of the present invention, and the reference numeral 1 in the drawing is a holder for a paint nozzle 2, which has a substantially rectangular boss portion 11 protruding from the center of the front surface, and a paint 12 penetrating through the top surface of the holder. is a fan-shaped orifice-type paint nozzle 2 made of ultra-hard material.
is press-fitted with a lip-shaped cut groove 21 cut at its tip facing the longitudinal direction of the top surface, and a ventilation hole 13 provided in the holder 1 is formed by cutting a lip-shaped groove 21 cut around the boss part 11. It opens into an annular ventilation groove 14, from which relatively low-pressure air is blown out through an orifice-type blowhole 34, which will be described later.
他方、このホルダー１の前面を覆うキヤツプ状
の空気ノズル３には、台形状の頂面３１に削成し
たＶ字状もしくはＶ字状の切欠溝３２と内面に削
成したドーム状の凹隔部３３によつてリツプ状の
オリフイス形噴気口３４が形成され、またこの噴
気口３４の相対向する両口縁中央には、ホルダー
１前面に設けた長方形のボス部１１に合わせた浅
い方形の切欠き３５，３５を削成して噴気口３４
の両側口縁中央部に塗料ノズル２を挟むようにし
て偏平な空気流路ａ，ａが形成されている。そし
て、この空気ノズル３は、上記したホルダー１上
に軸線が一致するように、しかも塗料ノズル２か
らの扇形噴霧と空気ノズル３からの扇形空気流が
共通の平面上に形成されるように嵌合された上、
側面に刻設した位置規制用の溝３６をホルダー１
側面に植設した位置規制用のピン２６に係合させ
ることによつて正確に位置決め保持されている。 On the other hand, the cap-shaped air nozzle 3 that covers the front surface of the holder 1 has a V-shaped or V-shaped notch groove 32 cut on the trapezoidal top surface 31 and a dome-shaped recess cut on the inner surface. A lip-shaped orifice-shaped blowhole 34 is formed by the portion 33, and a shallow rectangular blowhole 34 that matches the rectangular boss portion 11 provided on the front surface of the holder 1 is provided at the center of the opposing edges of the blowhole 34. The notches 35, 35 are cut to form the blowhole 34.
Flat air flow paths a, a are formed at the center of both sides of the mouth so as to sandwich the paint nozzle 2 therebetween. The air nozzle 3 is fitted onto the holder 1 described above so that its axes coincide with each other, and the fan-shaped spray from the paint nozzle 2 and the fan-shaped air flow from the air nozzle 3 are formed on a common plane. After being combined,
Holder 1
It is accurately positioned and held by engaging with a position regulating pin 26 planted on the side.
このように構成された噴霧ノズルにおいて、通
気孔２３に送り込まれた数Kg／cm2程度の比較的低
圧の空気は、環状空気溝２４内で均らされた上、
ドーム状のオリフイス形噴気口３４より噴出する
が、上述したようにこの噴気口３４の内方には、
ここを埋めるようにしてホルダー１前面から断面
長方形のボス部１１が突出して噴気口３４の中心
寄りに位置した両側口縁中央部には狭い偏平状の
流路ａ，ａを、また中心から離れた噴気口３４の
長手方向両端部には比較的広い流路ｂ，ｂを形成
しているため噴気口３４の両側口縁中央部から噴
出した空気は偏平に集束した強い空気流となつて
塗料ノズル２から噴射した扇形噴霧を促進しつつ
霧滴の飛散を抑える一方、噴気口３４の長手方向
両側部から噴出した空気は外方へ向いた弱い空気
流となつて塗料を霧化しつつむしろその扇形角を
広げる方向に誘導し、かくして得られた扇形噴霧
をもつて被塗料面上に端部にゆくほど膜厚が暫減
する広巾の塗膜を形成する。 In the spray nozzle configured in this way, the relatively low pressure air of about several kg/cm 2 sent into the ventilation hole 23 is leveled in the annular air groove 24 and then
It is ejected from the dome-shaped orifice-shaped fumarole 34, but as mentioned above, inside this fumarole 34,
A boss portion 11 with a rectangular cross section protrudes from the front surface of the holder 1 so as to fill this space, and narrow flat flow passages a, a are formed in the center of both mouth edges located near the center of the jet nozzle 34. Since relatively wide channels b and b are formed at both longitudinal ends of the jet nozzle 34, the air ejected from the center of both side edges of the jet nozzle 34 becomes a flat, strong air flow that is concentrated on the paint. While promoting the fan-shaped spray ejected from the nozzle 2 and suppressing the scattering of mist droplets, the air ejected from both sides in the longitudinal direction of the nozzle 34 becomes a weak air flow directed outward, atomizing the paint and rather The fan-shaped spray is guided in the direction of widening, and the thus obtained fan-shaped spray forms a wide coating film on the surface to be coated, the film thickness gradually decreasing toward the edges.
（効果）
以上述べたように本発明によれば塗料ノズルの
支持部を噴気口に沿う断面偏平な突出部として形
成する一方リツプ状噴気口の両側口縁中央部にこ
の突出部の断面形に対応する浅い切欠きを削減し
たので簡単な構成にもかかわらず扇形噴霧を両側
から挟む空気流を偏平に整形すると同時に強化す
ることを可能として霧化の促進と霧滴の飛散防止
を効果的に行わしめるとともに扇形噴霧の両側部
においては空気流を弱くかつ外方に向けることが
できて乱流のない広角噴霧を実現させることがで
きる。(Effects) As described above, according to the present invention, the support part of the paint nozzle is formed as a protrusion with a flat cross section along the jet nozzle, while the cross-sectional shape of this protrusion is formed at the center of both side edges of the lip-shaped jet nozzle. Because the corresponding shallow notch has been reduced, despite the simple configuration, it is possible to flatten and at the same time strengthen the airflow that sandwiches the fan-shaped spray from both sides, effectively promoting atomization and preventing the scattering of mist droplets. At the same time, on both sides of the fan-shaped spray, the airflow can be directed weakly and outward, making it possible to realize a wide-angle spray without turbulence.
第１図は、本発明の一実施例をなす噴霧ノズル
の断面図、第２図は、同上装置の正面図、第３図
は、第２図のＡ−Ａ線の断面図、第４図は従来装
置の一側を示す側面図である。
１……ホルダ、１１……ボス部、２……塗料ノ
ズル、３……空気ノズル、３２……切欠溝、３３
……ドーム状凹部、３４……噴気口、３５……切
欠部。
FIG. 1 is a sectional view of a spray nozzle according to an embodiment of the present invention, FIG. 2 is a front view of the same device, FIG. 3 is a sectional view taken along line A-A in FIG. 2, and FIG. FIG. 2 is a side view showing one side of a conventional device. DESCRIPTION OF SYMBOLS 1... Holder, 11... Boss part, 2... Paint nozzle, 3... Air nozzle, 32... Notch groove, 33
. . . dome-shaped recess, 34 . . . blowhole, 35 . . . notch.
Claims (1)
に、内面のドーム状凹部と外面の切欠溝とを連通
させることによつて形成したリツプ状のオリフイ
ス型噴気口を有する空気ノズルを、上記両ノズル
からの噴流がほぼ同一の平面上に形成されるよう
配設するとともに、上記ドーム状凹部により包囲
される塗料ノズルの支持部を上記噴気口の長手方
向に沿う断面偏平な突出部として形成する一方、
上記噴気口の両側口縁中央部に上記突出部の断面
形に対応する浅い切欠きを削成してなる噴霧ノズ
ル。1. In front of the orifice-type paint nozzle for fan-shaped spraying, an air nozzle having a lip-shaped orifice-type nozzle formed by communicating a dome-shaped recess on the inner surface with a notch on the outer surface is installed so that air from both of the above-mentioned nozzles disposed so that the jets are formed on substantially the same plane, and a support portion of the paint nozzle surrounded by the dome-shaped recess is formed as a protruding portion having a flat cross section along the longitudinal direction of the jet nozzle;
A spray nozzle formed by cutting a shallow notch corresponding to the cross-sectional shape of the protruding part in the center of both side edges of the jet nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3578084A JPS60179165A (en) | 1984-02-25 | 1984-02-25 | spray nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3578084A JPS60179165A (en) | 1984-02-25 | 1984-02-25 | spray nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60179165A JPS60179165A (en) | 1985-09-13 |
| JPH0220300B2 true JPH0220300B2 (en) | 1990-05-08 |
Family
ID=12451409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3578084A Granted JPS60179165A (en) | 1984-02-25 | 1984-02-25 | spray nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60179165A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7032832B2 (en) * | 2003-12-16 | 2006-04-25 | Spraying Systems Co. | Asymmetrical spray nozzle with alignment notch |
-
1984
- 1984-02-25 JP JP3578084A patent/JPS60179165A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60179165A (en) | 1985-09-13 |
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