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JPS5861855A - Method and apparatus for ejecting compressed air - Google Patents

Method and apparatus for ejecting compressed air

Info

Publication number
JPS5861855A
JPS5861855A JP57117047A JP11704782A JPS5861855A JP S5861855 A JPS5861855 A JP S5861855A JP 57117047 A JP57117047 A JP 57117047A JP 11704782 A JP11704782 A JP 11704782A JP S5861855 A JPS5861855 A JP S5861855A
Authority
JP
Japan
Prior art keywords
air stream
injection
medium
conveying air
region
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.)
Granted
Application number
JP57117047A
Other languages
Japanese (ja)
Other versions
JPS6029540B2 (en
Inventor
カ−ル・クリステイアン・グレ−ザ−
ゲ−ルハルト・ブ−ル
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erunsuto Painigeru Untaan GmbH
Erunsuto Painigeru Untaaneemen Fuyuuru Bautenshiyutsutsu GmbH
Original Assignee
Erunsuto Painigeru Untaan GmbH
Erunsuto Painigeru Untaaneemen Fuyuuru Bautenshiyutsutsu GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Erunsuto Painigeru Untaan GmbH, Erunsuto Painigeru Untaaneemen Fuyuuru Bautenshiyutsutsu GmbH filed Critical Erunsuto Painigeru Untaan GmbH
Publication of JPS5861855A publication Critical patent/JPS5861855A/en
Publication of JPS6029540B2 publication Critical patent/JPS6029540B2/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0084Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a mixture of liquid and gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00Devices or accessories for generating abrasive blasts
    • B24C5/02Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Processing Of Solid Wastes (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Glanulating (AREA)

Abstract

1. A method of sand-blasting wherein particulate ejecting medium ist delivered to a carrier gas stream, propelled and accelerated by said carrier gas stream, and ejected to the surface to be treated, wherein an additive gas stream carrying an additive substance, preferably water, is fed to said carrier gas stream, and wherein a feed conduit for the particulate ejecting medium is followed by a frustoconically tapered region, characterized in that said additive gas stream carrying said additive substance is fed to said carrier gas stream at a location in the frustoconically tapered region where speed and acceleration of the particulate ejecting medium are still low.

Description

【発明の詳細な説明】 本発明は、粒状噴射媒体を、運搬空気流に導入し、かつ
運搬空気流−によつ工送り、加速し、かつ処理すべき表
面に吹付け、かつなるべく噴射媒体をぬらすなるべく流
体の添加物、特に水を含んだ補助空気流・を、運搬空気
流に加え、特に噴射媒体を含む運搬空気流内に注入する
、圧縮空気噴射方法、およびこの方法を実施する噴射装
置に関−f 7)。
DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for introducing a granular propellant into a conveying air stream, transporting it through the conveying air stream, accelerating it, and spraying it onto the surface to be treated, preferably using a granular propellant. A compressed air injection method, in which an auxiliary air stream, preferably containing a fluid additive, in particular water, is added to the conveying air stream and in particular is injected into the conveying air stream containing the propellant medium, and an injection carrying out this method Regarding equipment-f7).

前記のような公知の方法において、流体添jJo物を含
む補助空気流を加えることによって噴射゛媒体を湿らせ
ることができる(ドイツ連邦共和国特許出願公開第27
24318号明細書参照]。この加湿は、噴射媒体が処
理すべき表面に当った際に生じるほこりを吸収し、また
はほこりの発生を防止し、また−は少なくとも減少する
ため、加えられた流体添加物の量がちょうど十分である
ように調量することができる。しかし加えられた添加物
の量は、添加物が処理すべき表面に沈降しかつここから
流出する稈長くはない。従って前記公知の方法は、1乾
燥噴射」、従って例・えば乾燥した砂を含む圧縮空気噴
射と「湿噴射」との間にあるものであり、rfJI気噴
射」と称する。
In known methods as mentioned above, the injection medium can be moistened by adding an auxiliary air stream containing a fluid additive (German Patent Application No. 27
24318]. This humidification ensures that the amount of fluid additive added is just sufficient to absorb, or prevent, or at least reduce, the dust generated when the propellant medium hits the surface to be treated. It can be measured accordingly. However, the amount of additive added is not such that there is a culm length from which the additive settles to the surface to be treated and flows out. The known method is therefore intermediate between ``dry injection'', thus for example compressed air injection containing dry sand, and ``wet injection'' and is referred to as ``rfJI air injection''.

本発明の先行技術である公知の方法において、流体添加
物を含む補助空気流の供給は、本方法を実施する噴射装
置のノズル範囲のノズル収縮位置において行われる。こ
こでは運搬空気流は最高速度を、従って最低静圧を有す
る。この低い静圧は、補助空気流を吸入するために利用
される。それにより添加物を含んだ補助空気流の供給は
全く簡単になるが、所望のように制御することはできな
い。
In known methods prior to the present invention, the supply of the auxiliary air stream containing the fluid additive takes place in the nozzle retracted position of the nozzle region of the injection device implementing the method. Here the conveying air flow has the highest velocity and therefore the lowest static pressure. This low static pressure is utilized to draw in supplemental airflow. The supply of an auxiliary air stream containing additives is thereby quite simple, but cannot be controlled as desired.

圧縮空気噴射の際、処理すべき表面に対する噴射媒体の
できるだけ高い衝突速度が望まれる。供給導管において
運搬空気流による飛−行推進によって送られろ噴射媒体
は、運搬空気流の静圧をできるだけ大幅に運動エネルギ
に変換する噴射装置のノズル範囲において、このように
して加速された運搬空気流によって連行され、その際噴
射媒体は、できるだけ運搬空気流の速度の範囲にある速
度に達するようにする。
During compressed air injection, a maximum possible impingement velocity of the injection medium on the surface to be treated is desired. The propellant medium, which is conveyed by flight propulsion by the conveying air stream in the supply conduit, converts the static pressure of the conveying air stream into kinetic energy as significantly as possible in the nozzle region of the injector, injecting the thus accelerated conveying air into the nozzle region of the injector. The jet medium is entrained by the flow, with the aim that the injection medium reaches a speed which is preferably in the range of the speed of the conveying air flow.

しかしながら運搬空気流と噴射媒体の比重CJ相違して
いるので、運搬空気流は、ここに連行される噴射媒体よ
りもずっと強力に加速される。例えばノズル範囲が比較
的長く形成された収縮範囲を有する比較的長い行程にお
いて、運搬空気流の静圧企運動エネルギに変換すること
によって、前記作用を防止することが試みられた。しか
し長い収縮範囲の形の比較的長く形成された加速区間を
設けた場合にも、噴射媒体の速度は、明らかに運搬空気
流の速度には達しない。噴射媒体の速度は、湿らせる流
体添加物のため噴射媒体の質量が増大し、従って実際の
加速度がざらに減少することにより、ざらに低下する。
However, because of the different specific gravity CJ of the conveying air stream and the propellant medium, the conveying air stream is accelerated much more strongly than the propellant medium entrained therein. Attempts have been made to prevent this effect by converting the hydrostatic kinetic energy of the conveying air flow, for example in relatively long strokes in which the nozzle region has a relatively long designed contraction region. However, even if a relatively long acceleration section in the form of a long contraction region is provided, the velocity of the injection medium clearly does not reach the velocity of the conveying air stream. The velocity of the propellant medium is drastically reduced by the fact that the mass of the propellant medium increases due to the wetting fluid additive and therefore the actual acceleration is drastically reduced.

前記公知の方法において、補助空気流によって送られる
添加物を加える位置が噴射装置のノズル範囲の位置にあ
り、この範囲において同時に噴射媒体の大きな加速度を
得るようにする、ということが特に不利である。それに
より噴射媒体を添加物によってぬらすために利用できる
時間は非常に短い。この状態では、噴射媒体を流体添加
物紹よって所望のように完全に閉じ−るようにくるむこ
とは不可能である。その結果添加物を[過調量」シて動
作させないと、処理すべき表面のほこり形成も常に満足
できるようになるわけではない。
It is particularly advantageous in the known method that the point of application of the additive delivered by the auxiliary air stream is located in the nozzle region of the injector, so as to simultaneously obtain a large acceleration of the injected medium in this region. . The time available for wetting the propellant medium with the additive is therefore very short. In this situation, it is not possible to wrap the injection medium in a completely closed manner as desired by introducing the fluid additive. As a result, the dust formation on the surfaces to be treated is not always satisfactory unless the additives are operated in an "over-dosed" manner.

本発明の課題は、一方において最少量の、なるべく流体
の添加物によって噴射媒体を所望のように、良好に制御
可能にかつ完全に被覆できるように、また他方において
運搬空気流による噴射媒体の加速が、添加物の供給によ
ってできるだけわずかしか影響を受けないように、初め
に述べたような方法およびこの方法により動作する噴射
装置を改善することにある。
The object of the invention is, on the one hand, to achieve the desired, controllable and complete coating of the propellant medium with a minimum amount of fluid additives, and on the other hand to accelerate the propellant medium by means of a conveying air stream. The object of the present invention is to improve the method as mentioned at the outset and the injection device operating according to this method so that it is influenced as little as possible by the supply of additives.

前記の課題号解決する本発明による方法はまず次のよう
な特徴な有する。すなわち添加物を含んだ補助空気流の
供給が、運搬空気流の局所範囲において行われ、その際
この範、囲において噴射媒体の速度および71D速度が
小ざい。従って本発明によれば、運搬空気流により噴射
媒体の加速を行う位置と、添加物を含む補助空気流の供
給を行う位置とは、互いに空間的に離れている。それに
より添加物の供給は加速過程を妨害せず、かつその逆に
加速過程も添加物の供給を妨害しないので、両方の過程
、従って加速および添加物の供給が最適化できるように
なる。
The method according to the present invention for solving the above problems has the following characteristics. In other words, the supply of the auxiliary air stream containing the additive takes place in a local area of the conveying air stream, in which the velocity of the injection medium and the 71D velocity are small. According to the invention, therefore, the location of the acceleration of the injection medium by means of the conveying air stream and the location of the supply of the auxiliary air stream containing the additive are spatially separated from one another. Thereby, the supply of additives does not interfere with the acceleration process and, conversely, the acceleration process does not interfere with the supply of additives, so that both processes, and thus acceleration and the supply of additives, can be optimized.

本発明によれば添加物の供給は時間的に噴射媒体を本来
加速するより前に行われるので、噴射媒体は、本来の加
速区間に入る際すでに、湿りによって質量を増大されて
おり、かつ噴射媒体は’f2+?つた状態で加速される
。加速は外部作用によって妨害されずに行われるので、
前に湿った噴射媒体の最大限の加速が行われる。しかし
本発明により添加物を含んだ補助空気流の供給を行うよ
うにする補助空気流の局所範囲に、特に噴射媒体の飛行
路に関して見渡し可能な状態が存在するので・この位置
では、ノズル位置の範囲よりもずっと正確に噴、射媒体
を湿らせることができる。従って本発明の教示によれば
、加湿と加速の有利な分離、相互作用のない両方の過程
の最適な制御、噴射媒体の精密な加湿、および処理すべ
き表面における噴射媒体の改善された衝突速度が可能で
ある。
According to the invention, the supply of the additive takes place temporally before the actual acceleration of the injection medium, so that the injection medium has already increased in mass due to moisture when it enters the actual acceleration phase and is ready for injection. Is the medium 'f2+? It is accelerated in the ivy state. Since acceleration occurs unhindered by external forces,
Maximum acceleration of the previously moistened jet medium takes place. However, since in the local region of the auxiliary air stream, in which the supply of the auxiliary air stream containing additives is carried out according to the invention, there is a situation in which visibility is possible, in particular with respect to the flight path of the injection medium. It is possible to wet the spray medium much more accurately than with a range. According to the teaching of the invention, therefore, an advantageous separation of humidification and acceleration, optimal control of both processes without interaction, precise humidification of the jetting medium and an improved impingement velocity of the jetting medium at the surface to be treated is possible.

有利にも本発明による方法において添加物を含んだ補助
空気流の供給は、噴射媒体の加速区間の始点で行われる
。この位置ではすでにある程度の大きざではあるが小ざ
な噴射媒体の加速が行われているので、噴射媒体の加湿
により後続の噴射媒体のよどみは防止され、かつ詰まる
ことはなくなる。
Advantageously, in the method according to the invention, the supply of the additive-containing auxiliary air stream takes place at the beginning of the acceleration section of the injection medium. Since at this position the injection medium has already been accelerated to a certain degree, the humidification of the injection medium prevents subsequent stagnation of the injection medium and prevents clogging.

特に重要な本発明の別の教示によれば、注入範囲におけ
る噴射媒体に、自転および/または運搬空気流の流れの
方向一対して相対的に旋回運動が、特にらせん状の旋回
運動が与えられる。それにより添加物による噴射媒体の
全面的な被覆が容易に行われる。噴射媒体の自転または
運搬空気流の流れの方向に対して相対的な噴射媒体の旋
回転動は、補助空気流の供給を中心を外れたところで行
うことによって簡11に発生できる。
According to another teaching of the invention of particular importance, the injection medium in the injection region is given a swirling movement, in particular a helical swirling movement, relative to its rotation and/or to the direction of flow of the conveying air stream. . This facilitates the complete coverage of the propellant medium with the additive. A rotation of the propellant medium or a rotational movement of the propellant relative to the direction of flow of the conveying air stream can be easily generated by off-centered supply of the auxiliary air stream.

本発明による方法の実施に適した噴射装置は、少なくと
も1つの収縮範囲を有するノズル範囲を有し、次のよう
な特徴を有する。すなわち少4「くとも1つの収縮範囲
を有するノズル範囲が設けられており、添加物を含んだ
補助空気流を供給する局所範囲が、ノズル範囲の収縮範
囲の始点に形成されている。添加物を含んだ補助空気流
の供給がスリットを介して行われ、このスリットが、ノ
ズル範囲の軸線に対して45°の角度をなしており、か
つ収縮範囲の入口端部から収縮範囲の全長の’yまたけ
離れていると有利である。
An injection device suitable for implementing the method according to the invention has a nozzle region with at least one contraction region and has the following characteristics. That is, a nozzle region with at least one constriction region is provided, and a local region for supplying an auxiliary air flow containing an additive is formed at the beginning of the constriction region of the nozzle region. The supply of an auxiliary air flow containing 1000 ml of air is provided via a slit which is at an angle of 45° to the axis of the nozzle region and extends from the inlet end of the retracting region to the entire length of the retracting region. It is advantageous to be separated by y.

本発明の実施例を以下図面によって説明する。Embodiments of the present invention will be described below with reference to the drawings.

噴射装置には、供給導管1を通して飛行運搬により運搬
空気流に含まれた粒状噴射媒体2が供給され、その際噴
射装置はノズル範囲3を有し、1ift射媒体2の運動
方向は矢印4で示されている。噴 。
The injector is supplied with a granular propellant medium 2 contained in a conveying air stream by flight conveyance through a supply conduit 1, the injector having a nozzle region 3 and the direction of movement of the 1ift injector medium 2 as indicated by the arrow 4. It is shown. Spout.

射装置のノズル範囲3は、人体において長く延びたほぼ
75cmの長さの収縮範囲5、およびここに続く拡張範
囲6から成り、その際この拡張範囲は、収7.縮範囲5
のほぼ2.5倍の長さを有する。収縮範囲5と拡張範囲
6は円すい形に形成されており、これら範囲は、ノズル
範囲3の最小断面の範囲、ノズルの狭い位@7において
互いにはまるように移行している。
The nozzle area 3 of the injection device consists of a contraction area 5 extending approximately 75 cm long in the human body and an expansion area 6 following this, the expansion area having a length of approximately 75 cm. Reduction range 5
It has a length approximately 2.5 times that of the previous one. The contraction region 5 and the expansion region 6 are formed conically, and these regions transition to fit into each other in the area of the smallest cross section of the nozzle region 3, the narrowest part of the nozzle @7.

図示された噴射装置において噴射媒体2を送る運搬空気
流の静圧は、ノズル範囲3の収縮位置5において連動エ
ネルギに変換される。加速された運搬空気流は噴射媒体
2を連行するので、噴射媒体2も、ノズル範囲3の収縮
範囲5において加速される。
In the illustrated injection device, the static pressure of the conveying air flow conveying the injection medium 2 is converted into coupled energy in the retracted position 5 of the nozzle region 3 . The accelerated conveying air stream entrains the injection medium 2, so that the injection medium 2 is also accelerated in the retraction region 5 of the nozzle region 3.

本発明によれば、ノズル範囲3の収縮範囲5によって形
成された加速区間の初期範囲において、スリッ□ト8を
介して噴射媒体2を含む運搬空気流に補助空気流が加え
られ、らの補助空気流は、流体添加物、特に水を含んで
いる。補助空気流は、接続管片9および図示されていな
い供給導管を介して圧力をかけてリング室10に供給さ
れ、ここから噴射媒体の飛行方向に対してほぼ45°の
角度をなしてスリット8を通って噴射媒体2を含む運搬
−気流内に注入される。注入範囲において補助空気流の
動圧は、運搬空気流の動圧のほぼ2倍の大きざになって
いるので、補助空気流は運搬空気流に完全に侵入するこ
とができる。それにより噴射媒体2は流体添加物によっ
て均一かつ所定の積でぬれることができる。
According to the invention, in the initial region of the acceleration zone formed by the retraction region 5 of the nozzle region 3, an auxiliary air flow is added to the conveying air flow containing the injection medium 2 via the slit □ 8, The air stream contains fluid additives, especially water. The auxiliary air stream is fed under pressure via a connecting tube piece 9 and a supply conduit (not shown) to the ring chamber 10 and from there to the slit 8 at an angle of approximately 45° to the direction of flight of the propellant medium. is injected into the conveying air stream containing the propellant medium 2 through it. In the injection region, the dynamic pressure of the auxiliary air stream is approximately twice as large as the dynamic pressure of the conveying air stream, so that the auxiliary air stream can penetrate completely into the conveying air stream. The injection medium 2 can thereby be wetted uniformly and with a defined thickness by the fluid additive.

図示された実施例において運搬空気流中に補助空気流を
加える局所的範囲は、ノズル範囲3の収縮範囲5の全長
のほぼ只のところにある。噴射媒体2は、従ってまずほ
ぼ%の加速度を受は−、全体としてノズル範囲3のノズ
ル位置7までの経路1:で加速される。
In the illustrated embodiment, the local area for adding the auxiliary air stream to the conveying air stream is approximately just over the entire length of the retraction area 5 of the nozzle area 3. The injection medium 2 therefore first experiences an acceleration of approximately % - and is accelerated on the path 1: to the nozzle position 7 of the nozzle region 3 as a whole.

【図面の簡単な説明】[Brief explanation of the drawing]

図は、本発明によ′る方法のための噴射装置の有利な実
施例を一部断面で示す図である。−1・・・供給導管、
2・・・噴射媒体、3・・・ノズル範囲、5・・・収縮
範囲
The figure shows, partially in section, a preferred embodiment of an injection device for the method according to the invention. -1... Supply conduit,
2... Injection medium, 3... Nozzle range, 5... Contraction range

Claims (8)

【特許請求の範囲】[Claims] (1)粒状噴射媒体を、運搬空気流に導入し、かつ運搬
空気層によって送り、加速し、かつ処理すべき表面に吹
付け、かつなるべく噴射媒体をぬらすなるべく流体の添
加物、特に水を含んだ補助空気流を、運搬空気流に加え
、特に噴射媒体を含む運搬空気流内に注入す゛る、圧縮
空気噴射方法において、 添加物を含んだ補助空気流の供給が、運搬空気流の局所
範囲において行われ、その際この範囲において噴射媒体
の速度および加速度が小ざいことを特徴とする、圧縮空
気噴射方法。
(1) The granular propellant medium is introduced into the conveying air stream and is conveyed, accelerated and sprayed onto the surface to be treated by the conveying air layer and preferably contains a fluid additive, in particular water, which preferably wets the propellant medium. In compressed air injection methods in which an auxiliary air stream is added to the conveying air stream, in particular injected into the conveying air stream containing the propellant, the supply of the additive-containing auxiliary air stream is carried out in local areas of the conveying air stream. Compressed air injection method, characterized in that the velocity and acceleration of the injection medium are small in this range.
(2)添加物を含んだ補助空気流の供給が、噴射媒体の
加速区間の始点で行われる、特許請求の範囲第1項記載
の方法。
2. The method of claim 1, wherein the supply of the auxiliary air stream containing the additive takes place at the beginning of the acceleration section of the injection medium.
(3)補助空気流が20pないし70°、なるべく45
°の角度をなして運搬空気流に注入される、特許請求の
範囲第1項または第2項記載の方法。
(3) Auxiliary airflow is 20p to 70°, preferably 45°
3. A method as claimed in claim 1 or 2, in which the conveying air stream is injected at an angle of .degree.
(4)注入範囲において噴射媒体に自転が与えられる、
特許請求の範囲第1項ないし第3項の1つに記載の方法
(4) Autorotation is given to the injection medium in the injection range,
A method according to one of the claims 1 to 3.
(5)注入範囲において噴射媒体に、運搬空気流の流れ
方向に対して相対的に旋回運動が与えられ、特にらせん
状旋回運動が与えられる、特許請求の範囲第1瑣ないし
第4項の1つに記載の方法。
(5) In the injection region, the injection medium is given a swirling motion relative to the flow direction of the conveying air stream, in particular a helical swirling motion. The method described in.
(6)補助空気流が、注入範囲において運搬空気流の圧
力よりも高い圧力で運搬−空気流内に注入される、特許
請求の範囲第1項ないし第5項の1つに記載の方法。
6. The method according to claim 1, wherein the auxiliary air flow is injected into the conveying air stream at a pressure higher than the pressure of the conveying air stream in the injection region.
(7)粒状噴射媒体−を、運搬空気流に導入し、がっ運
搬空気流によって送り、加速し、かつ処理すべき表面に
吹付け、かつなるべく噴射媒体をぬらすなるべく流体の
添加物、特に水を含んだ補助空気流を、運搬空気流に加
え、′Ji!fに噴射媒体を含む運搬空気流内に注入す
る、圧縮空気噴射方法を実施する噴射装置において、、
1 少なくとも1つの収縮範囲を有するノズル範囲が設けら
れており、添加物を含んだ補助空気流を供給する局所範
囲が、ノズル範囲(3)の収縮範囲(5)の始点に形成
されている巳とを特徴とする、噴射装置。
(7) A granular propellant medium is introduced into the conveying air stream, which causes it to be conveyed, accelerated and sprayed onto the surface to be treated, and preferably with a fluid additive, in particular water, which preferably wets the propellant medium. An auxiliary air flow containing ′Ji! is added to the conveying air flow and In an injection device implementing a compressed air injection method, injecting into a conveying air stream containing a propellant medium at f,
1 A nozzle region with at least one constriction region is provided, and a local region supplying an auxiliary air flow containing additives is formed at the beginning of the constriction region (5) of the nozzle region (3). An injection device characterized by.
(8)添加物?含んだ補助空気流の供給がスリット(8
)を介して行われ、このスリットが、ノズル範囲(3)
の軸線に対して45°の角度をなしており、かつ収縮範
囲(5)の入口端部から収縮範囲(5)の全長の1/4
だけ離れている、特許請求の範囲第7項記載の噴射装置
(8) Additives? The supply of auxiliary airflow containing slits (8
), and this slit connects the nozzle area (3)
and 1/4 of the total length of the retraction area (5) from the inlet end of the retraction area (5).
8. An injection device as claimed in claim 7, which is separated by a distance of .
JP57117047A 1981-07-09 1982-07-07 Sandblasting method and equipment Expired JPS6029540B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813127013 DE3127013A1 (en) 1981-07-09 1981-07-09 METHOD FOR COMPRESSED AIR JET, AND JET FOR IMPLEMENTING THE METHOD
DE3127013.1 1981-07-09

Publications (2)

Publication Number Publication Date
JPS5861855A true JPS5861855A (en) 1983-04-13
JPS6029540B2 JPS6029540B2 (en) 1985-07-11

Family

ID=6136440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57117047A Expired JPS6029540B2 (en) 1981-07-09 1982-07-07 Sandblasting method and equipment

Country Status (7)

Country Link
EP (1) EP0069875B1 (en)
JP (1) JPS6029540B2 (en)
KR (1) KR840000282A (en)
AT (1) ATE10595T1 (en)
DE (2) DE3127013A1 (en)
GR (1) GR76182B (en)
PT (1) PT75184B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6243655U (en) * 1985-09-02 1987-03-16

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648215A (en) * 1982-10-22 1987-03-10 Flow Industries, Inc. Method and apparatus for forming a high velocity liquid abrasive jet
CA1231235A (en) * 1982-10-22 1988-01-12 Mohammed Hashish Method and apparatus for forming a high velocity liquid abrasive jet
DE3415174A1 (en) * 1984-04-21 1985-10-31 Ernst Peiniger GmbH Unternehmen für Bautenschutz, 4300 Essen Process for abrasive blasting using compressed air
ATE32317T1 (en) * 1984-08-14 1988-02-15 Johan Szuecs DEVICE AND METHOD FOR CLEANING STONE AND METAL SURFACES.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE23064E (en) * 1948-12-14 Method and apparatus for
US2376616A (en) * 1944-01-18 1945-05-22 Metalweld Inc Sandblasting apparatus
CH302642A (en) * 1952-07-23 1954-10-31 Rosset Paul Sandblasting process and gun for implementing this process.
GB774624A (en) * 1955-05-10 1957-05-15 John Alexander Johnson Improvements in or relating to devices for producing jets of sand or like granular or powder material
US3344558A (en) * 1965-07-23 1967-10-03 Wyatt S Kirkland Sand blast nozzle
GB1571508A (en) * 1977-02-17 1980-07-16 Kelsall T Wet blast cleaning

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6243655U (en) * 1985-09-02 1987-03-16

Also Published As

Publication number Publication date
JPS6029540B2 (en) 1985-07-11
KR840000282A (en) 1984-02-18
EP0069875A2 (en) 1983-01-19
DE3261457D1 (en) 1985-01-17
EP0069875B1 (en) 1984-12-05
PT75184B (en) 1984-05-28
ATE10595T1 (en) 1984-12-15
EP0069875A3 (en) 1983-04-06
DE3127013A1 (en) 1983-01-27
GR76182B (en) 1984-08-03
PT75184A (en) 1982-08-01

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