JPS6229088Y2 - - Google Patents
Info
- Publication number
- JPS6229088Y2 JPS6229088Y2 JP1981194077U JP19407781U JPS6229088Y2 JP S6229088 Y2 JPS6229088 Y2 JP S6229088Y2 JP 1981194077 U JP1981194077 U JP 1981194077U JP 19407781 U JP19407781 U JP 19407781U JP S6229088 Y2 JPS6229088 Y2 JP S6229088Y2
- Authority
- JP
- Japan
- Prior art keywords
- spray
- jet nozzle
- shaped
- fan
- nozzle
- 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 38
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 238000000576 coating method Methods 0.000 description 7
- 238000000889 atomisation Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Nozzles (AREA)
Description
【考案の詳細な説明】
液体自体を比較的高い加圧状態のもとに射出噴
霧すると同時にその射出噴霧の基端付近に比較的
低圧の加圧空気を供給して霧化の促進並びに飛散
を抑制するようにした加圧気液併用型の噴霧装置
があるが、これは従来のエアレススプレー装置と
エアスプレー装置の長所を採り入れた噴霧装置と
して実用化されつつあり、即ちエアススプレー装
置は塗着効率がよい代わり、扇形噴霧の場合には
テールが発生し易いばかりでなく塗膜に斑絞が生
じ易く、霧化も不充分となり易い関係上、仕上げ
塗装に不適当であり、またエアスプレー装置は霧
化がよく斑絞を生じることがないから仕上げ塗装
に好適な代わり、塗着効率が著しく低く塗装の浪
費が不可避であるほか、吐出量を多くして厚膜を
形成するのに不適当であるという欠点があるのに
対し、塗料を比較的高圧のもとに噴霧すると同時
に空気流を併わせ供給する加圧気液併用型の噴霧
装置は、塗着効率の向上、テールの発生防止、斑
絞の発生抑止、霧化の向上、厚膜形成および仕上
げ塗装への適応等を容易に実現することができ
る。[Detailed description of the invention] The liquid itself is injected and sprayed under relatively high pressure, and at the same time, relatively low pressure pressurized air is supplied near the base end of the injected spray to promote atomization and scattering. There is a pressurized gas-liquid type spraying device designed to reduce pressure, but this is being put into practical use as a spraying device that incorporates the advantages of conventional airless spraying devices and air spraying devices. Although it is more efficient, fan-shaped spraying not only tends to generate tails but also tends to cause mottling in the paint film and insufficient atomization, making it unsuitable for finishing coatings, and air spray equipment. Since it atomizes well and does not cause uneven squeezing, it is suitable for finishing coating, but its coating efficiency is extremely low and waste of coating is unavoidable, and it is not suitable for forming a thick film by increasing the discharge amount. On the other hand, pressurized air-liquid spraying equipment that sprays paint under relatively high pressure and simultaneously supplies airflow improves coating efficiency, prevents the occurrence of tails, and It is possible to easily suppress the occurrence of uneven squeezing, improve atomization, form a thick film, and apply it to finishing coating.
しかして、このような加圧気液併用型の扇形噴
霧装置においては、扇形角度が縮小する傾向が強
く、広い塗膜幅が得られない欠点がある。 However, in such a pressurized gas-liquid type fan-shaped spraying device, there is a strong tendency for the fan-shaped angle to decrease, and there is a drawback that a wide coating film width cannot be obtained.
本考案は、このような加圧気液併用型噴霧装置
において噴霧扇形角を広角化する目的のもとに加
圧空気供給用噴霧ノズルについてこれを扇形噴霧
角の広角化に適応する特殊構成としたことを特徴
とするものであつて、以下添付図面に例示する態
様について詳細に説明する。 The present invention aims to widen the fan-shaped spray angle in such a pressurized air-liquid spraying device, and the spray nozzle for supplying pressurized air has a special configuration adapted to widen the fan-shaped spray angle. Hereinafter, embodiments illustrated in the accompanying drawings will be described in detail.
本考案の適用対象としての噴霧装置としては、
例えば第１図および第２図のように、噴霧ガン１
の先端外周に雄ねじ２を刻設するほか先端寄りの
中心部に超硬合金製の弁座３およびこれに対応す
る針弁４を必要に応じ開閉することができるよう
に設け、これに対する噴霧ノズル５としては、鍔
付き帽状の超硬合金製主体に後方開放状態のドー
ム状凹窩６を形成するほか前端には断面がＶ字状
の溝７を前記凹窩６と適度に交叉するように設け
ることによりほぼ唇状のオリフイス型噴液口８を
形成し、かつこのような噴霧ノズル５を通気路９
と係合テーパー部１０とがある鍔１１付きのホル
ダー１２内に噴霧ノズル５の先端が露出するよう
に嵌合した後、後方からプツシユ１３付きパツキ
ング１４の介入のもとに噴霧ガン１の先端に取り
付けるようにするほか、前記ホルダー１２の外周
には、テーパー部１０に対接するテーパー部１５
と受段１６とがあるばかりでなく、ドーム状の凹
窩１７とＶ字状の溝１８との交叉により形成され
るほぼ唇状のオリフイス型噴気口１９がある噴気
ノズル２０を内向き鍔があるナツト２１によりガ
ン１における雄ねじ２にホルダー１２と共に同一
軸線関係のもとにその唇状噴気口１９が前記唇状
噴液口８に符合するように締め付け固定し、これ
によりガン１の先端寄りの空気供給孔２２から１
〜数Kg／cm2程度の比較的低圧の空気を供給して唇
状の噴気口１９から前方へ扇形状の空気流を生じ
させると共に、噴霧ノズル５の噴液口８からは上
流の針弁４の開放により20〜数十Kg／cm2程度の比
較的高圧のもとに供給される塗料等の高粘度液体
を扇形状噴霧として射出するようにし、以つて扇
形噴霧の外周側に空気流を生じさせて霧化の促
進、テールの発生防止、噴霧の飛散抑制等を実現
するようにした型式を採択する。 The spray device to which this invention is applied is as follows:
For example, as shown in FIGS. 1 and 2, a spray gun 1
In addition to having a male thread 2 carved on the outer periphery of the tip, a valve seat 3 made of cemented carbide and a corresponding needle valve 4 are provided in the center near the tip so that they can be opened and closed as necessary, and a spray nozzle for this is provided. 5, a dome-shaped concave cavity 6 which is open at the rear is formed in a flange-shaped main body made of cemented carbide, and a groove 7 with a V-shaped cross section is formed at the front end so as to appropriately intersect with the concave cavity 6. By providing the spray nozzle 5 in the air passage 9, a substantially lip-shaped orifice-type spray opening 8 is formed.
After the spray nozzle 5 is fitted into a holder 12 with a flange 11 having an engaging taper portion 10 so that the tip thereof is exposed, the tip of the spray gun 1 is inserted from behind with the intervention of a packing 14 with a pusher 13. In addition, the outer periphery of the holder 12 is provided with a tapered portion 15 that is in contact with the tapered portion 10.
The inward flange of the jet nozzle 20 not only has a receiving stage 16 but also a roughly lip-shaped orifice-shaped jet port 19 formed by the intersection of a dome-shaped concave cavity 17 and a V-shaped groove 18. A certain nut 21 is tightened and fixed to the male thread 2 of the gun 1 in the same axial relationship with the holder 12 so that the lip-shaped jet port 19 is aligned with the lip-shaped jet port 8. air supply holes 22 to 1
A relatively low pressure air of ~ several kg/cm 2 is supplied to generate a fan-shaped air flow forward from the lip-shaped jet port 19, and from the jet port 8 of the spray nozzle 5 to the upstream needle valve. By opening 4, high viscosity liquid such as paint, which is supplied under relatively high pressure of about 20 to several tens of kg/ cm2 , is injected as a fan-shaped spray, and an air flow is created around the outer periphery of the fan-shaped spray. We will adopt a model that promotes atomization, prevents the formation of tails, and suppresses spray scattering.
上記型式に対する本考案の特殊構成としては、
前記噴気口１９の先端が前記噴液口８よりも前方
へ位置するように配設して、噴気口１９から噴出
する過程の空気流が噴液口８から噴出する扇形噴
霧の側面に衝触しつつそれを包囲する傾向に流出
するようにすると共に、噴霧の外周面に衝触状態
に供給する空気流を噴霧の流れに対して広角度の
もとに衝触するように指向させるのであつて、第
１図の態様においては、ドーム状凹窩１７の先端
部の形状についてこれを球面ではなく軸線と直交
する平面に形成し、噴霧口８から噴出する噴霧に
直角関係もしくは直角に近い角度のものに衝触さ
せるようにし、これにより低圧かつ少量の空気供
給のもとに、噴霧を乱すことなく霧化の促進およ
びテールの発生防止を効果的に実現しつつ噴霧の
扇形角の縮小化を防止して広角の扇形噴霧を形成
することができるのである。 The special configuration of this invention for the above model is as follows:
The tip of the jet nozzle 19 is arranged so as to be located forward of the jet nozzle 8, so that the air flow in the process of jetting out from the jet nozzle 19 collides with the side surface of the fan-shaped spray jetting out from the jet nozzle 8. At the same time, the air flow is directed to impinge on the outer peripheral surface of the spray at a wide angle with respect to the flow of the spray. In the embodiment shown in FIG. 1, the shape of the tip of the dome-shaped concave cavity 17 is not a spherical surface but a plane perpendicular to the axis, and the shape is perpendicular to or close to a right angle to the spray ejected from the spray nozzle 8. This makes it possible to promote atomization without disturbing the spray and effectively prevent tail formation while reducing the fan angle of the spray under low pressure and small amount of air supply. This makes it possible to form a wide-angle fan-shaped spray.
前記凹窩１７の形状については、種々変更する
ことができるのであつて、第３図のような円錐台
状にしてもよく、第４図のように円筒状にしても
よく、第５図のような段付き円錐状にしてもよ
く、また第６図のような凹窩先端寄り部にオーバ
ーハング状の円錐部がある形状にしてもよく、そ
の他第７図および第８図のようにいわゆるかまぼ
こ状または第９図および第１０図のように変形か
まぼこ状でもよく、要するに第１１図に示すよう
に溝１８に交叉する凹窩１７の先端寄り内面Ａと
扇形噴霧面Ｐとのなす衝触角θを60度以上にする
のがよく、70度以上がなおよく、80度ないし100
度が最もよいのであつて、従つて凹窩１７がドー
ム状であつてもかまぼこ状であつても、衝触角θ
が60度以上であればよく、なお溝１８の形状につ
いてもＶ字状に限らずＵ字状、方形等適宜採択す
ることができるのである。 The shape of the recess 17 can be changed in various ways, and may be a truncated cone as shown in FIG. 3, a cylindrical shape as shown in FIG. 4, or a cylindrical shape as shown in FIG. It may have a stepped conical shape as shown in FIG. 6, or it may have a shape with an overhanging conical portion near the tip of the recess as shown in FIG. It may be a semicylindrical shape or a modified semicylindrical shape as shown in FIGS. 9 and 10. In short, as shown in FIG. It is best to set θ to 60 degrees or more, 70 degrees or more is even better, and 80 degrees to 100 degrees.
Therefore, regardless of whether the recess 17 is dome-shaped or semi-cylindrical, the impact angle θ
It is sufficient that the angle is 60 degrees or more, and the shape of the groove 18 is not limited to the V-shape, but may be U-shape, rectangular, etc. as appropriate.
以上のほか噴気ノズル２０とホルダー１２との
対接関係を規制するため、両者の対接部に溝２３
と突起２４とによる位置規制装置を設けることが
よい。 In addition to the above, in order to regulate the contact relationship between the jet nozzle 20 and the holder 12, a groove 23 is formed in the contact portion between the two.
It is preferable to provide a position regulating device including a projection 24 and a projection 24.
以上説明したように、本考案によれば、扇形空
気流生成のための噴気口１９の先端を噴液口８よ
りも前方へ配置して扇形噴霧の両側面に加圧空気
が衝触した後随伴する状態のもとに推進させるほ
か、噴気口１９を形成する凹窩１７の先端寄り内
面と扇形噴霧面とのなす衝触角を広角度にしたか
ら、これにより扇形噴霧を乱すことなく斑絞の発
生を防止し低圧かつ少量の空気供給のもとに霧化
の促進およびテールの発生防止を実現し、しかも
噴霧パターンの大きさを縮小することがなく、更
に液圧をも低下させ得る等の効果がある。 As explained above, according to the present invention, the tip of the jet nozzle 19 for generating a fan-shaped airflow is placed forward of the jet nozzle 8, and after pressurized air collides with both sides of the fan-shaped spray, In addition to being propelled under the accompanying conditions, the angle of impingement between the inner surface of the concave hole 17 forming the jet nozzle 19 near the tip and the fan-shaped spray surface is made wide, so that the fan-shaped spray is not disturbed and the spray is narrowed down. This technology promotes atomization and prevents the formation of tails by supplying a small amount of air at low pressure, without reducing the size of the spray pattern, and can even lower the liquid pressure. There is an effect.
図面において、第１図および第２図はそれぞれ
一実施態様における本考案噴霧装置を示す縦断側
面図および正面図、第３図、第４図、第５図およ
び第６図はそれぞれ他の態様を各別に示す要部だ
けの縦断側面図、第７図および第８図はそれぞれ
別な態様を示す要部だけの縦断側面図および横断
平面図、第９図および第１０図はそれぞれ更に別
な態様を示す要部はへの縦断側面図および横断平
面図、または第１１図は衝触角の説明用縦断側面
図である。
５……噴霧ノズル、８……噴液口、１７……凹
窩、１８……溝、１９……噴気口、２０……噴気
ノズル。
In the drawings, FIGS. 1 and 2 each show a longitudinal sectional side view and a front view of the spray device of the present invention in one embodiment, and FIGS. 3, 4, 5, and 6 show other embodiments, respectively. 7 and 8 are longitudinal sectional side views and cross-sectional plan views of only the essential parts showing different aspects, and FIGS. 9 and 10 are each showing still different aspects. 11 is a longitudinal sectional side view and a sectional plan view showing the main parts, and FIG. 11 is a longitudinal sectional side view for explaining the impact angle. 5... Spray nozzle, 8... Spray port, 17... Recess, 18... Groove, 19... Blower port, 20... Blower nozzle.
Claims (1)
較的高圧のもとに扇形に噴射する平吹き噴霧ノズ
ル５を採択すると共に、前記噴液口８の周囲から
噴霧を包囲する状態のもとに比較的低圧の空気流
を供給する噴気ノズル２０を設けた型式の加圧気
液併用型噴霧装置であつて、前記噴気ノズル２０
の噴気口１９を凹窩１７の溝１８との交叉により
扇形空気流の噴出に適応するほぼ唇状のオリフイ
ス型に形成するばかりでなく、噴気口１９の先端
を前記噴液口８よりも前方にかつ噴気口１９と噴
液口８とが符合するように配設し、更に前記溝１
８に交叉する凹窩１７の先端寄り内面と扇形噴霧
面とのなす衝触角を60度以上の広角度に形成して
なる加圧気液併用型噴霧装置。 A flat spray nozzle 5 is adopted which sprays liquid in a fan-shape under relatively high pressure from an orifice-type spout 8 having a substantially lip-like shape, and a spray nozzle 5 which surrounds the spray from around the spout 8 is adopted. This is a pressurized gas-liquid combination spraying device of the type provided with a jet nozzle 20 that supplies a relatively low-pressure air flow to the jet nozzle 20.
Not only is the jet nozzle 19 intersected with the groove 18 of the concave cavity 17 formed into a substantially lip-like orifice shape adapted to eject a fan-shaped air flow, but also the tip of the jet nozzle 19 is formed in front of the jet nozzle 8. The jet nozzle 19 and the jet nozzle 8 are arranged so as to match, and the groove 1
This pressurized air-liquid spraying device is formed by forming a wide angle of 60 degrees or more between the inner surface of the concave cavity 17 near the tip and the fan-shaped spray surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19407781U JPS58107159U (en) | 1981-12-30 | 1981-12-30 | Pressurized gas-liquid spray device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19407781U JPS58107159U (en) | 1981-12-30 | 1981-12-30 | Pressurized gas-liquid spray device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58107159U JPS58107159U (en) | 1983-07-21 |
| JPS6229088Y2 true JPS6229088Y2 (en) | 1987-07-25 |
Family
ID=30107408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19407781U Granted JPS58107159U (en) | 1981-12-30 | 1981-12-30 | Pressurized gas-liquid spray device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58107159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005154751A (en) * | 2003-10-29 | 2005-06-16 | Mitsubishi Chemicals Corp | Bottom structure for combustion chamber of coke oven |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4246506B2 (en) * | 2003-01-23 | 2009-04-02 | 澁谷工業株式会社 | Gas-liquid mixed flow injection device |
| JP2013193006A (en) * | 2012-03-16 | 2013-09-30 | Nozzle Network Co Ltd | Liquid atomization apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472714U (en) * | 1977-11-02 | 1979-05-23 |
-
1981
- 1981-12-30 JP JP19407781U patent/JPS58107159U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005154751A (en) * | 2003-10-29 | 2005-06-16 | Mitsubishi Chemicals Corp | Bottom structure for combustion chamber of coke oven |
| JP4507832B2 (en) * | 2003-10-29 | 2010-07-21 | 三菱化学株式会社 | Coke oven combustion chamber bottom structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58107159U (en) | 1983-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3908285B2 (en) | Low air pressure spray nozzle | |
| JP2769962B2 (en) | Air-added sprayer suitable for painting | |
| US5165605A (en) | Low pressure air atomizing spray gun | |
| US6494387B1 (en) | Low-pressure atomizing spray gun | |
| US5456414A (en) | Suction feed nozzle assembly for HVLP spray gun | |
| US5074466A (en) | Fluid valve stem for air spray gun | |
| US4232824A (en) | Method and apparatus for the pneumatic spraying of liquid products | |
| JPS6229088Y2 (en) | ||
| JPH0522293Y2 (en) | ||
| EP0411830B1 (en) | Low pressure air atomizing spray gun | |
| JPH04176352A (en) | Spray nozzle | |
| JPS5946159A (en) | Airless spray painting method and gun therefor | |
| JPS634524Y2 (en) | ||
| JPS635797Y2 (en) | ||
| JPH0243500Y2 (en) | ||
| JPS637321Y2 (en) | ||
| JPS6212439Y2 (en) | ||
| JPS6229081Y2 (en) | ||
| JPH0711802Y2 (en) | Internal / external mixed use spray gun | |
| JPS6338926Y2 (en) | ||
| JPH0327270B2 (en) | ||
| JPS635790Y2 (en) | ||
| JPH0156830B2 (en) | ||
| JPH0448825Y2 (en) | ||
| JPS635141B2 (en) |