JPS6331719Y2 - - Google Patents
Info
- Publication number
- JPS6331719Y2 JPS6331719Y2 JP1983096250U JP9625083U JPS6331719Y2 JP S6331719 Y2 JPS6331719 Y2 JP S6331719Y2 JP 1983096250 U JP1983096250 U JP 1983096250U JP 9625083 U JP9625083 U JP 9625083U JP S6331719 Y2 JPS6331719 Y2 JP S6331719Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- gas
- mixed gas
- gas discharge
- bushing
- 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
- 239000000463 material Substances 0.000 claims description 30
- 239000004033 plastic Substances 0.000 claims description 25
- 229920003023 plastic Polymers 0.000 claims description 25
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 46
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 12
- 239000001294 propane Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 239000006223 plastic coating Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
-
- 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
-
- 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
- B05B7/16—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 incorporating means for heating or cooling the material to be sprayed
- B05B7/20—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 incorporating means for heating or cooling the material to be sprayed by flame or combustion
- B05B7/201—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 incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle
- B05B7/205—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 incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle the material to be sprayed being originally a particulate material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3478—Geometrical details
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Nozzles (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はプラスチツク溶射ガンの火口にかか
り、詳しくは大型鉄構物等の表面に防蝕、電気的
な絶縁、耐摩耗性の向上または装飾等のためにプ
ラスチツクの被覆を形成する際に使用するプラス
チツク溶射ガンの火口に関する。[Detailed description of the invention] (Industrial application field) This invention applies to the crater of a plastic spray gun, and more specifically, to corrosion prevention, electrical insulation, improvement of abrasion resistance, decoration, etc. on the surface of large steel structures, etc. This invention relates to a nozzle for a plastic spray gun used in forming plastic coatings for plastic coatings.
（従来技術）
従来、この種のプラスチツク溶射ガンの火口は
種々提供されており、第３図にその一例を示す。
図において、１１は火口ホルダー、１２は火口ホ
ルダー１１の先端開口部に取付けられたブツシン
グ、１３はガス放出用ノズル、１４は材料射出用
ノズルを示しており、また、１４ａはプラスチツ
クの粉粒体やペースト溶液の微粒子の如きプラス
チツク材料の供給口、１１ａは火焔を形成するた
めの混合ガスの供給口、１１ｂは空気の供給口を
夫々示す。しかして、この火口は、溶射ガン本体
（図示せず）の吐出口に火口ホルダー１１をネジ
止め等することにより取付けられるものである。(Prior Art) Conventionally, various types of nozzles for plastic spray guns of this type have been provided, one example of which is shown in FIG.
In the figure, 11 is a crater holder, 12 is a bushing attached to the tip opening of the crater holder 11, 13 is a gas discharge nozzle, 14 is a material injection nozzle, and 14a is a plastic powder. Reference numeral 11a indicates a supply port for a plastic material such as fine particles of a paste solution, 11a indicates a supply port for a mixed gas for forming a flame, and 11b indicates a supply port for air. This nozzle is attached by screwing the nozzle holder 11 to the discharge port of a thermal spray gun body (not shown).
使用にあたつては、溶射ガン本体側から供給口
１４ａを介して前方に射出されるプラスチツク材
料を、材料射出用ノズル１４の先端部とガス放出
用ノズル１３の先端部との間のスリツト１５から
放出されるエアカーテンによつて包囲し、その外
側をガス放出用ノズル１３の先端部とブツシング
１２の先端部との間のスリツト１６から強制的に
放出される前記混合ガスにて包囲し、この混合ガ
スに着火することによりエアカーテンを介して溶
融されたプラスチツク材料を金属板等の施工物表
面に衝突させ、付着させるものである。ここでエ
アカーテンは、プラスチツク材料が施工物の表面
に到達する以前に燃焼してしまうのを防止するべ
く作用している。 In use, the plastic material injected forward from the thermal spray gun body side through the supply port 14a is passed through the slit 15 between the tip of the material injection nozzle 14 and the tip of the gas discharge nozzle 13. surrounded by an air curtain discharged from the air curtain, and the outside thereof is surrounded by the mixed gas forcibly discharged from the slit 16 between the tip of the gas discharge nozzle 13 and the tip of the bushing 12, By igniting this mixed gas, the molten plastic material is caused to collide with the surface of a workpiece such as a metal plate through an air curtain, and is made to adhere thereto. The air curtain serves here to prevent the plastic material from burning before it reaches the surface of the construction.
しかしながら、この種のプラスチツク溶射ガン
においては、混合ガスとして一般に酸素とプロパ
ンガスとを混合したものを用いているため、火焔
の温度が必要以上に高く（例えば2800〔℃〕程度）
なり過ぎ、これによつてプラスチツク材料を分解
し、あるいは劣化、焼損せしめる欠点があつた。
また、酸素ガスが高価であるためコスト高になり
がちであると共に、酸素ボンベの調達や運搬、交
換等が現場作業上、煩雑であるという欠点があつ
た。本考案は上記の欠点を解消すべく提案された
ものである。 However, since this type of plastic spray gun generally uses a mixture of oxygen and propane gas, the flame temperature is higher than necessary (for example, about 2800 [℃]).
This has the drawback of causing the plastic material to decompose, deteriorate, or burn out.
Further, since oxygen gas is expensive, the cost tends to be high, and the procurement, transportation, and replacement of oxygen cylinders are complicated on-site work. The present invention has been proposed to eliminate the above-mentioned drawbacks.
〔考案の目的）
本考案の目的は、空気とプロパンガスとの混合
ガスの使用を可能とし、従来の如く酸素を用いた
場合に存する種々の欠点を解消して作業性の向上
およびコストの低減を図ると共に、プラスチツク
の溶射に最適な温度の、安定した火焔を得られる
ようにしたプラスチツク溶射ガンの火口を提供す
ることにある。[Purpose of the invention] The purpose of the invention is to enable the use of a mixed gas of air and propane gas, eliminate various drawbacks that exist when using oxygen as in the past, and improve work efficiency and reduce costs. To provide a nozzle for a plastic spray gun which can provide a stable flame at an optimum temperature for spraying plastics.
（考案の構成） 以下、図に沿つて本考案を説明する。(Structure of the idea) The present invention will be explained below with reference to the drawings.
第１図は本考案の一実施例を示すもので、本考
案は材料射出用ノズル１、ガス放出用ノズル２、
ブツシング３、フード４および火口ホルダー５か
らなつている。先ず、材料射出用ノズル１は従来
同様にプラスチツク材料の供給口１ａを有するほ
ぼ円筒状に形成され、その軸方向後端部には火口
ホルダー５への取付ネジ１ｂが形成されている。
また、材料射出用ノズル１の長さ方向の中央部よ
りも僅か前方には位置決め用の複数の凸部１ｃが
外周に沿つて突設され、これらの相互間に形成さ
れたスリツト内をエアーが通過可能となつてい
る。 FIG. 1 shows an embodiment of the present invention, which includes a material injection nozzle 1, a gas discharge nozzle 2,
It consists of a bushing 3, a hood 4 and a crater holder 5. First, the material injection nozzle 1 is formed into a substantially cylindrical shape having a plastic material supply port 1a, as in the conventional case, and a mounting screw 1b for attaching to the nozzle holder 5 is formed at the rear end in the axial direction.
Further, a plurality of protrusions 1c for positioning are protruded along the outer periphery slightly ahead of the central part in the length direction of the material injection nozzle 1, and air flows through the slits formed between these protrusions. It is possible to pass.
次に、ガス放出用ノズル２は、詳しくは第２図
に示す如く材料射出用ノズル１を挿入可能なほぼ
円筒状の胴部２ａを有し、この胴部２ａの先端周
囲にほぼ笠状のノズルヘツド２ｂを付設してな
り、このノズルヘツド２ｂと胴部２ａ先端との間
には〓間２ｃが形成されていると共に、ノズルヘ
ツド２ｂの先端面には円周方向に沿つて多数のガ
ス放出孔２ｄが穿設されている。ノズルヘツド２
ｂの側面には、その全周にわたつて適宜な間隔を
隔てて複数（例えば８個）のパイロツト孔２ｅが
穿設されている。このパイロツト孔２ｅは〓間２
ｃに連通して胴部２ａの軸方向に直交する方向に
向いており、好ましくはその直径を0.7〔mm〕程度
に設定するものである。 Next, the gas discharge nozzle 2 has a substantially cylindrical body part 2a into which the material injection nozzle 1 can be inserted, as shown in detail in FIG. A nozzle head 2b is attached, and a gap 2c is formed between the nozzle head 2b and the tip of the body 2a, and a large number of gas discharge holes 2d are formed along the circumferential direction on the tip surface of the nozzle head 2b. is drilled. Nozzle head 2
A plurality (eight, for example) of pilot holes 2e are bored at appropriate intervals over the entire circumference of the side surface of b. This pilot hole 2e is
c, and is oriented in a direction perpendicular to the axial direction of the body portion 2a, and preferably has a diameter of about 0.7 mm.
次いで、ブツシング３は、第１図に示すように
ノズルヘツド２ｂの後端部に適合して内接する通
孔３ａを備え、かつ軸方向の前端部にフード４取
付用のカラー３ｂを有すると共に、後端部には火
口ホルダー５取付用のカラー３ｃを備えている。 Next, as shown in FIG. 1, the bushing 3 has a through hole 3a that fits and is inscribed in the rear end of the nozzle head 2b, and has a collar 3b for attaching the hood 4 at the front end in the axial direction. The end is provided with a collar 3c for attaching the crater holder 5.
また、ブツシング３のカラー３ｂには円筒状の
フード４が螺着され、このフード４の外周には冷
却用の通孔４ａが複数設けられている。 Further, a cylindrical hood 4 is screwed onto the collar 3b of the bushing 3, and a plurality of cooling holes 4a are provided on the outer periphery of the hood 4.
更に、溶射ガン本体の吐出口Ｍにネジ等によつ
て取付けられる火口ホルダー５には、空気とプロ
パンガスとの混合ガスの供給口５ａおよび空気の
供給口５ｂが夫々穿設されており、また、材料射
出用ノズル１の供給口１ａに連通する通孔が設け
られている。加えて、火口ホルダー５の先端部内
周面にはネジが形成されており、ブツシング３の
カラー３ｃが取付可能となつている。 Furthermore, the nozzle holder 5, which is attached to the discharge port M of the thermal spray gun body with screws or the like, is provided with a supply port 5a for a mixed gas of air and propane gas, and a supply port 5b for the air, respectively. , a through hole communicating with the supply port 1a of the material injection nozzle 1 is provided. In addition, a screw is formed on the inner circumferential surface of the tip of the crater holder 5, so that the collar 3c of the bushing 3 can be attached thereto.
しかして、これらを組立てるには、材料射出用
ノズル１を火口ホルダー５に螺着し、ガス放出用
ノズル２を材料射出用ノズル１に対して同心状に
被せた後、ブツシング３の通孔３ａにノズルヘツ
ド２ｂを挿入しつつブツシング３を火口ホルダー
５に螺着し、次いでフード４をブツシング３のカ
ラー３ｂに取付ければよい。なお、材料射出用ノ
ズル１の先端部とガス放出用ノズル２の先端部と
の間には空気を通過せしめるための若干の〓間を
保有することが必要であると共に、ブツシング３
の通孔３ａから突出したノズルヘツド２ｂのパイ
ロツト孔２ｅはカラー３ｂの内部の空間に連通さ
せる必要がある。 To assemble these, the material injection nozzle 1 is screwed onto the nozzle holder 5, the gas discharge nozzle 2 is placed concentrically over the material injection nozzle 1, and then the through hole 3a of the bushing 3 is inserted. The bushing 3 may be screwed onto the nozzle holder 5 while inserting the nozzle head 2b therein, and then the hood 4 may be attached to the collar 3b of the bushing 3. Note that it is necessary to provide a slight gap between the tip of the material injection nozzle 1 and the tip of the gas discharge nozzle 2 to allow air to pass through, and the bushing 3
The pilot hole 2e of the nozzle head 2b protruding from the through hole 3a must be communicated with the space inside the collar 3b.
次に、この動作を説明する。先ず、第１図に示
す如く溶射ガン本体の吐出口Ｍの内部からパイプ
等を介して適当な混合比からなる空気およびプロ
パンガスの混合ガス、ならびに空気が夫々供給口
５ａ，５ｂに強制的に供給される。これにより、
ガス放出孔２ｄから混合ガスＦが放出すると共
に、ノズルヘツド２ｂのパイロツト孔２ｅを介し
て前記混合ガスの一部F′がノズルヘツド２ｂの周
囲に漏出する。 Next, this operation will be explained. First, as shown in FIG. 1, a mixed gas of air and propane gas having an appropriate mixing ratio and air are forced from inside the discharge port M of the thermal spray gun body through a pipe or the like to the supply ports 5a and 5b, respectively. Supplied. This results in
At the same time as the mixed gas F is released from the gas discharge hole 2d, a portion F' of the mixed gas leaks around the nozzle head 2b through the pilot hole 2e of the nozzle head 2b.
しかして、ガス放出孔２ｄから放出された混合
ガスＦはかなりの高速となるが、パイロツト孔２
ｅから漏出した混合ガスF′はカラー３ｂに衝突し
て極めて低速の流れとなり、この流れが混合ガス
Ｆの基端部に衝突するため、混合ガスＦは着火し
た際に火が消えない程度に好適な低速度となり、
かつ安定した火焔が得られる。 Therefore, the mixed gas F released from the gas discharge hole 2d has a considerably high speed, but the mixed gas F released from the pilot hole 2d
The mixed gas F' leaking from e collides with the collar 3b and becomes an extremely low-velocity flow, and this flow collides with the base end of the mixed gas F, so that when the mixed gas F is ignited, the flame does not go out. It becomes a suitable low speed,
And a stable flame can be obtained.
また、混合ガスＦに着火されて生じた火焔はプ
ラスチツクの溶融に十分な温度を保有しつつ金属
板等の施工物の表面に達し、この表面を加熱す
る。 Further, the flame generated by igniting the mixed gas F reaches the surface of the workpiece such as a metal plate while maintaining a temperature sufficient to melt the plastic, and heats the surface.
次いで、供給口１ａを介してプラスチツク材料
Ｐを強制的に供給すると、このプラスチツク材料
Ｐは材料射出用ノズル１の先端から前方に射出さ
れるが、この際、プラスチツク材料Ｐの周囲をエ
アカーテンＡが包囲しているため、プラスチツク
材料Ｐは火焔から隔離された状態となつて劣化し
たり焼損するおそれがなく、適度に溶融した状態
で施工物の表面に高速で衝突し、付着する。従つ
て、火焔を施工物の表面に万遍なく吹き付けるこ
とにより、施工物の表面全域にわたつてプラスチ
ツクの被覆が形成されるものである。なお、フー
ド４の通孔４ａには２次燃焼用の空気が流通する
ため、これがフード４およびブツシング３等の冷
却を促進し、作業時にフード４等を握持可能な温
度に保つことができるものである。 Next, when the plastic material P is forcibly fed through the supply port 1a, the plastic material P is injected forward from the tip of the material injection nozzle 1. At this time, the plastic material P is surrounded by an air curtain A. Since the plastic material P is surrounded by flames, the plastic material P is isolated from the flames and there is no risk of deterioration or burnout, and it collides with the surface of the construction object at high speed in an appropriately molten state and adheres to it. Therefore, by uniformly spraying the flame onto the surface of the workpiece, a plastic coating is formed over the entire surface of the workpiece. In addition, since air for secondary combustion flows through the through hole 4a of the hood 4, this promotes cooling of the hood 4, the bushing 3, etc., and can maintain the hood 4 etc. at a temperature that allows it to be held while working. It is something.
（考案の効果）
以上のように本考案によれば、プラスチツク材
料が供給されかつ射出される供給口を備えた材料
射出用ノズルと、この材料射出用ノズルに対し空
気を通過せしめる〓間を介して同心状に被装さ
れ、かつ空気とプロパンガスとの混合ガスを放出
する複数のガス放出孔をノズルヘツドに穿設して
なるガス放出用ノズルと、このガス放出用ノズル
に対して同心状に被装されるブツシングと、この
ブツシングの前方に取付けられかつ前記ガス放出
用ノズルの前方を包囲するフードとを備え、前記
ノズルヘツドに穿設した複数のパイロツト孔から
前記混合ガスの一部を漏出させて減速せしめ、前
記ガス放出孔から放出する混合ガスの基端部に供
給するべく構成したから、空気とプロパンガスと
の混合ガスの使用により、プラスチツク材料の溶
融に必要かつ十分な温度の火焔を得ることがで
き、従来の如く過度に高温の火焔によりプラスチ
ツク材料を劣化させ、焼損してしまうのを防止で
きる効果がある。(Effects of the invention) As described above, according to the invention, there is provided a material injection nozzle equipped with a supply port through which plastic material is supplied and injected, and a gap that allows air to pass through to the material injection nozzle. a gas discharge nozzle having a nozzle head provided with a plurality of gas discharge holes which are disposed concentrically and which discharge a mixed gas of air and propane gas; The device comprises a bushing to be covered and a hood attached to the front of the bushing and surrounding the front of the gas discharge nozzle, and allows a part of the mixed gas to leak out from a plurality of pilot holes formed in the nozzle head. Since the configuration is configured to decelerate the gas and supply it to the base end of the mixed gas discharged from the gas discharge hole, by using the mixed gas of air and propane gas, a flame of a temperature necessary and sufficient for melting the plastic material can be generated. This has the effect of preventing plastic materials from deteriorating and burning out due to excessively high-temperature flames as in the past.
また、従来の酸素ガスに代えて空気を用いるた
め、コストの低減が図れると共に、酸素ボンベの
調達や交換等、現場での煩雑な作業を解消でき、
しかも酸素ガスの調達が不可能な僻地での使用を
可能として地域や場所を選ばないプラスチツク溶
射ガンを提供できる利点がある。 In addition, since air is used instead of conventional oxygen gas, it is possible to reduce costs and eliminate complicated on-site work such as procuring and replacing oxygen cylinders.
Moreover, it has the advantage of being able to provide a plastic spray gun that can be used in remote areas where it is impossible to procure oxygen gas, so that it can be used in any region or location.
更に、パイロツト孔から漏出する混合ガスの一
部がガス放出孔からの主たる混合ガスの流速を抑
制するため、消えにくい安定した火焔が得られる
等の効果を有する。 Furthermore, since a part of the mixed gas leaking from the pilot hole suppresses the flow velocity of the main mixed gas from the gas discharge hole, it is possible to obtain a stable flame that is difficult to extinguish.
第１図および第２図は本考案の一実施例を示す
もので、第１図は縦断面図、第２図はイはガス放
出用ノズルの半縦断面図、同図ロは同図イの左側
面図、第３図は従来例を示す縦断面図である。
１……材料射出用ノズル、２……ガス放出用ノ
ズル、２ｂ……ノズルヘツド、２ｄ……ガス放出
孔、２ｅ……パイロツト孔、３……ブツシング、
４……フード、５……火口ホルダー。
Figures 1 and 2 show one embodiment of the present invention, in which Figure 1 is a longitudinal sectional view, Figure 2A is a half-longitudinal sectional view of the gas discharge nozzle, and Figure 2B is a half-longitudinal sectional view of the gas discharge nozzle. The left side view and FIG. 3 are vertical cross-sectional views showing a conventional example. 1... Nozzle for material injection, 2... Nozzle for gas release, 2b... Nozzle head, 2d... Gas release hole, 2e... Pilot hole, 3... Bushing,
4...Hood, 5...Tinder holder.
Claims (1)
給口を備えた材料射出用ノズルと、この材料射出
用ノズルに対し空気を通過せしめる〓間を介して
同心状に被装され、かつ空気とプロパンガスとの
混合ガスを放出する複数のガス放出孔をノズルヘ
ツドに穿設してなるガス放出用ノズルと、このガ
ス放出用ノズルに対して同心状に被装されるブツ
シングと、このブツシングの前方に取付けられか
つ前記ガス放出用ノズルの前方を包囲するフード
とを備え、前記ノズルヘツドに穿設した複数のパ
イロツト孔から前記混合ガスの一部を漏出させて
減速せしめ、前記ガス放出孔から放出する混合ガ
スの基端部に供給するべく構成したことを特徴と
するプラスチツク溶射ガンの火口。 A material injection nozzle equipped with a supply port through which plastic material is supplied and injected; A gas discharge nozzle having a plurality of gas discharge holes formed in the nozzle head for discharging a mixed gas, a bushing mounted concentrically with respect to the gas discharge nozzle, and a bushing mounted in front of the bushing. and a hood that surrounds the front of the gas discharge nozzle, the hood is configured to leak a portion of the mixed gas through a plurality of pilot holes formed in the nozzle head to decelerate the mixed gas, and to reduce the base speed of the mixed gas discharged from the gas discharge holes. A nozzle for a plastic thermal spray gun, characterized in that it is configured to feed to an end.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983096250U JPS605464U (en) | 1983-06-22 | 1983-06-22 | Plastic spray gun crater |
| GB08413633A GB2144654A (en) | 1983-06-22 | 1984-05-29 | Thermal spraying gun nozzle |
| FR8409649A FR2548926A1 (en) | 1983-06-22 | 1984-06-20 | HOT SPRAY GUN NOZZLE FOR PLASTIC MATERIAL |
| DE19843422904 DE3422904A1 (en) | 1983-06-22 | 1984-06-20 | NOZZLE OF A WARM SPRAY GUN FOR PLASTIC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983096250U JPS605464U (en) | 1983-06-22 | 1983-06-22 | Plastic spray gun crater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS605464U JPS605464U (en) | 1985-01-16 |
| JPS6331719Y2 true JPS6331719Y2 (en) | 1988-08-24 |
Family
ID=14159964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983096250U Granted JPS605464U (en) | 1983-06-22 | 1983-06-22 | Plastic spray gun crater |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS605464U (en) |
| DE (1) | DE3422904A1 (en) |
| FR (1) | FR2548926A1 (en) |
| GB (1) | GB2144654A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2671292B1 (en) * | 1991-01-03 | 1995-03-24 | Air Liquide | NOZZLE AND GUN FOR THERMAL SPRAYING OF PLASTIC MATERIAL. |
| US5135166A (en) * | 1991-05-08 | 1992-08-04 | Plasma-Technik Ag | High-velocity thermal spray apparatus |
| IT1394185B1 (en) * | 2009-05-08 | 2012-06-01 | Ibix Srl | METHOD AND EQUIPMENT FOR FLAME SPRAYING OF THERMOPLASTIC POWDERS |
-
1983
- 1983-06-22 JP JP1983096250U patent/JPS605464U/en active Granted
-
1984
- 1984-05-29 GB GB08413633A patent/GB2144654A/en not_active Withdrawn
- 1984-06-20 FR FR8409649A patent/FR2548926A1/en not_active Withdrawn
- 1984-06-20 DE DE19843422904 patent/DE3422904A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB8413633D0 (en) | 1984-07-04 |
| JPS605464U (en) | 1985-01-16 |
| GB2144654A (en) | 1985-03-13 |
| FR2548926A1 (en) | 1985-01-18 |
| DE3422904A1 (en) | 1985-01-31 |
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