EP1182008A1 - Strahlvorrichtung - Google Patents
Strahlvorrichtung Download PDFInfo
- Publication number
- EP1182008A1 EP1182008A1 EP00117057A EP00117057A EP1182008A1 EP 1182008 A1 EP1182008 A1 EP 1182008A1 EP 00117057 A EP00117057 A EP 00117057A EP 00117057 A EP00117057 A EP 00117057A EP 1182008 A1 EP1182008 A1 EP 1182008A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swirl
- blasting device
- blasting
- swirl chamber
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
Definitions
- the invention relates to a blasting device, in particular for cleaning Cavity surfaces by means of a jet from a conveying medium, preferably air, and added solid blasting material.
- a particular application is found in the cleaning of Inner pipe surfaces, especially for large capacitors.
- condenser tubing due to corrosion or dirt no longer the desired one Has heat transfer and the corresponding roughness.
- Such Pollution manifests itself directly in serious losses in efficiency.
- the Loss of power that occurs usually makes a new piping of the Capacitor or renovation of the old tubing required. From costs and due to time constraints, a renovation of the old tubing is desirable. to Carrying out a rehabilitation of the pipes of a heat exchanger is in in any case, the internal surfaces of the piping must be cleaned.
- the object is achieved in that the blasting device has a swirl generator, which is before or after the supply of the blasting material is arranged, which is a swirl chamber with an entry into the swirl chamber and has an outlet from the swirl chamber and one of the flow controlled twist.
- the invention proposes a method for cleaning hollow bodies by blasting with a jet from a pumped medium and added solid blasting material in which a swirl is imparted to the cleaning jet is, in particular with a blasting device according to the invention.
- the particular advantage of the device according to the invention is that optimal distribution of the blasting material on the surface to be cleaned. Due to the swirl that is imposed on the flow, it acts on the individual, solid shot particles, because of their higher density, a larger one Centrifugal force, which exhausts the blasting material from the core of the flow urges. While the blasting material is mainly on the surface to be cleaned concentrated, the core flow is largely free of blasting material. at the cleaning of elongated hollow bodies becomes the advantage according to the invention particularly large because the cleaning effect, not as in the prior art, Essentially focused on one point or line at a time, but a larger area is cleaned at the same time. Because of the better Use of the blasting material and the shortened blasting time is, in total significantly less blasting material is required.
- a further development of the invention provides that the swirl chamber is cylindrical is trained.
- the cylindrical shape of the swirl chamber has the advantage that form a flow in the circumferential direction with only slight flow losses can. In this way, the desired swirl becomes quick and even reached.
- the inlet opening has a greater extension axially in the swirl chamber than in Circumferential direction. In this way, the one that forms in the swirl chamber is maintained Circular flow through the entering medium a tangential Drive impulse without the circular flow experiencing any significant disturbance.
- a particularly compact design of the blasting device according to the invention arises when the swirl generator simultaneously acts as an outlet nozzle into the environment is trained. If necessary, the blasting material can only be added here the swirl generator are fed upstream of the flow nozzle. In particular in cramped working conditions, as usually an arrangement of This type of construction is advantageous for heat exchangers.
- an elongated cylindrical displacement body is arranged coaxially in the swirl chamber.
- a displacement body can adjust the size of the swirl component of the flow as desired can be set.
- An advantageous development of the blasting device according to the invention provides before that the length of the displacer extending in the swirl chamber can be adjusted. In this way, one device generate a flow with almost any swirl component. Will the Throttling effect by increasing the one extending in the swirl chamber Length of the displacer increases, so the flow becomes simultaneous accelerated. Furthermore, the mass throughput is controlled by the inventive method Device possible.
- a useful development of the device according to the invention provides that the cone angles of the displacement body and swirl chamber are almost the same. Such a flow geometry has the consequence that the flow without significant losses are accelerated. Furthermore, the Swirl component of the flow and mass flow through the entire Device can be dosed well.
- the service life of the blasting device according to the invention is therefore particularly long it is advantageous if the swirl generator is made of metal on its inner surface or ceramic, in particular made of oxide ceramic.
- the swirl generator should be designed to be particularly wear-resistant, because the strong deflection of the flow, especially when the flow has already been added Blasting material, a high load on the surfaces.
- An expedient embodiment of the blasting device provides that a guide tube or a hose is attached to the swirl generator connects, at the end of which an outlet nozzle is arranged. through of such a guide tube or hose, it is especially at particularly long hollow bodies possible, the outlet nozzle from the blasting device to move axially in the elongated hollow bodies and thus a provide sufficiently strong radiation. This way you get one uniform, particularly good cleaning result.
- a method for cleaning hollow bodies by blasting is also included a jet from a conveying flow and added, solid blasting material Subject of the invention, wherein a swirl is impressed on the cleaning jet is, in particular with a blasting device of the aforementioned type
- a particular advantage of the method according to the invention lies in the distribution of the blasting material on the surface to be cleaned. Because of the swirl which the flow is impressed, acts on the individual, solid shot particles, because of their higher density, a greater centrifugal force, which the blasting material pushes out of the core of the flow. While the grit is mainly concentrated on the surface to be cleaned Core flow largely free of blasting material. That way the blasting material exactly where it is during the cleaning process Should bring about cleaning effect.
- the method according to the invention is of particular advantage if it is is the cleaning of elongated hollow bodies, in particular pipes.
- the blasting material is planted on the helical in the pipes in the axial direction Away, along the inside of the pipe and provides a good cleaning effect there.
- the twist in the current can be maintained over longer distances and the desired cleaning effect surprisingly several meters behind the outlet nozzle. The time required to clean pipes shortens greatly with the inventive method.
- the spatial dimensions at the place of use are a supply prevent the blasting material by gravity.
- the blasting material is injected into the Pumped medium is sucked in, the transport of the blasting material if necessary be supported with a medium, in particular with conveying air can.
- a guide tube or a guide hose is arranged and this guide tube or if necessary, move this guide hose in the pipe to be cleaned can be.
- the cleaning performance of the invention also has an effect here Blasting device over a surface of certain axial length advantageous because the dwell time in the pipe to be cleaned is significantly reduced.
- FIG. 1 shows an inventive, cut in the longitudinal direction Swirl generator 1 with a swirl chamber 2, which has an inlet 3 and a Has outlet 4.
- FIG. 2 shows this swirl generator as a cross section according to FIG Section A-A.
- the swirl chamber 2 there is an elongated cylindrical displacement body 5 arranged coaxially.
- the inflow takes place via a tube 6, which is the Entry 3 into the swirl chamber 2 up to an entry opening 7 into the swirl chamber rejuvenated.
- the inlet 3 tapers only on the side 8, which is the middle of the Swirl generator is obvious.
- the other side of the inlet 3 is always tangential into the wall 9 of the swirl chamber 2. Entry 3 expands before Entry opening 7 into the swirl chamber 2 on the side 10, which in the direction the main flow in the swirl chamber 2 has.
- the displacement body 5 tapers at the end 11, which points in the main flow direction, conically. Likewise, the swirl chamber 2 cones towards the outlet 4 to.
- the cone angle of the displacer 5 on the in Main flow direction end 11 and at the outlet 4 of the Swirl chamber 2 are almost identical.
- On its inner surface 12 is the Swirl generator 1 coated with oxide ceramic.
- the swirl generator can either are flowed through by the conveying medium with blasting material or without blasting material.
- a guide tube or can be attached to the swirl generator connect a guide hose.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Nozzles (AREA)
- Glass Compositions (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Surgical Instruments (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
- Figur 1
- einen Längsschnitt durch einen erfindungsgemäßen Drallerzeuger und
- Figur 2
- eine geschnittene Draufsicht auf einen erfindungsgemäßen Drallerzeuger.
Claims (28)
- Strahlvorrichtung, insbesondere zum Reinigen von Hohlraumoberflächen mittels eines Strahls aus einem Fördermedium, vorzugsweise Luft, und zugesetztem, festem Strahlgut dadurch gekennzeichnet, daß die Strahlvorrichtung einen Drallerzeuger aufweist, welcher vor oder nach der Zufuhr des Strahlguts angeordnet ist, welcher eine Drallkammer mit einem Eintritt in die Drallkammer und einem Austritt aus der Drallkammer aufweist und der Strömung einen kontrollierten Drall aufprägt.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Drallkammer zylindrisch ausgebildet ist.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Drallkammer einen tangentialen Eintritt aufweist.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Austritt aus dem Drallerzeuger als Düse ausgebildet ist.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Eintritt in den Drallerzeuger als Düse ausgebildet ist.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Eintrittsöffnung in der Drallkammer axial eine größere Erstreckung aufweist, als in Umfangsrichtung.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sich der Eintritt vor der Eintrittsöffnung in die Drallkammer ausschließlich auf der Seite aufweitet, welche in die Richtung der Hauptströmung in der Drallkammer weist.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sich der Eintritt vor der Eintrittsöffnung in die Drallkammer ausschließlich auf der Seite verjüngt, welche der Mitte des Drallerzeugers naheliegt.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Eintritt auf der Außenseite der Drallkammer tangential in die Wandung der Drallkammer übergeht.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Drallerzeuger gleichzeitig als Austrittsdüse in die Umgebung ausgebildet ist.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein länglicher zylindrischer Verdrängungskörper koaxial in der Drallkammer angeordnet ist.
- Strahlvorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß sich die in der Drallkammer erstreckende Länge des Verdrängungskörpers verstellen läßt.
- Strahlvorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß sich der Verdrängungskörper an dem Ende, welches in Hauptströmungsrichtung weist, kegelartig verjüngt.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sich die Drallkammer zum Austritt hin kegelartig verjüngt.
- Strahlvorrichtung nach Anspruch 13 und 14, dadurch gekennzeichnet, daß die Kegelwinkel von Verdrängungskörper und Drallkammer nahezu gleich sind.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Drallerzeuger auf seiner Innenfläche aus Metall oder Keramik, insbesondere aus Oxidkeramik besteht.
- Strahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sich an den Drallerzeuger ein Führungsrohr oder ein Führungsschlauch anschließt, an dessen Ende eine Austrittsdüse angeordnet ist.
- Verfahren zum Reinigen von Hohlkörpern durch Strahlen mit einem Strahl aus einem Fördermedium und zugesetztem festem Strahlgut, dadurch gekennzeichnet, daß dem Reinigungsstrahl ein Drall aufgeprägt wird, insbesondere mit einer Strahlvorrichtung aus einer der vorangehenden Ansprüche.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß es sich um die Reinigung von länglichen Hohlkörpern, insbesondere Rohren, handelt.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß der Drall in der Strömung des Fördermediums vor der Zufuhr des Strahlguts erzeugt wird.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß der Drall in der Strömung des Fördermediums nach der Zufuhr des Strahlguts erzeugt wird.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß der Austritt aus dem Drallerzeuger als Düse ausgeführt ist.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß das Strahlgut mittels Schwerkraft in das Fördermedium gelangt.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß das Strahlgut aufgrund der Injektorwirkung in das Fördermedium hinein gesaugt wird, wobei der Transport des Strahlguts gegebenenfalls mit einem Fördermedium, insbesondere mit Förderluft, unterstützt wird.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß die Austrittsöffnung der Strahlvorrichtung an der Öffnung des zu reinigenden länglichen Hohlkörpers angeordnet wird.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß zwischen der zu reinigenden Rohrinnenfläche und der Austrittsöffnung der Düse ein Führungsrohr oder ein Führungsschlauch angeordnet ist und dieses Führungsrohr beziehungsweise dieser Führungsschlauch gegebenenfalls in dem zu reinigenden Rohr verfahren werden kann.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß zwischen der zu reinigenden Innenfläche des länglichen Hohlkörpers und der Austrittsöffnung der Düse ein konisches Übergangsstück angeordnet wird.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß zwischen der zu reinigenden Innenfläche des länglichen Hohlkörpers und der Austrittsöffnung der Düse ein flaches Übergangsstück angeordnet wird.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT00117057T ATE314176T1 (de) | 2000-08-09 | 2000-08-09 | Strahlvorrichtung |
EP00117057A EP1182008B1 (de) | 2000-08-09 | 2000-08-09 | Strahlvorrichtung |
DE50011976T DE50011976D1 (de) | 2000-08-09 | 2000-08-09 | Strahlvorrichtung |
US10/375,692 US7090568B2 (en) | 2000-08-09 | 2003-02-27 | Blasting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00117057A EP1182008B1 (de) | 2000-08-09 | 2000-08-09 | Strahlvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1182008A1 true EP1182008A1 (de) | 2002-02-27 |
EP1182008B1 EP1182008B1 (de) | 2005-12-28 |
Family
ID=8169474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00117057A Expired - Lifetime EP1182008B1 (de) | 2000-08-09 | 2000-08-09 | Strahlvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US7090568B2 (de) |
EP (1) | EP1182008B1 (de) |
AT (1) | ATE314176T1 (de) |
DE (1) | DE50011976D1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7090568B2 (en) | 2000-08-09 | 2006-08-15 | Richard Kreiselmaier | Blasting device |
DE102011082536A1 (de) | 2010-09-11 | 2012-03-15 | Patricia Frielingsdorf | Jet-stream-scheibenreinigungssystem |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9084651B2 (en) * | 2012-09-17 | 2015-07-21 | Zohar Laufer | Dental micro-tornado tissue cutting and removal method and apparatus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE192600C (de) * | ||||
US2532655A (en) * | 1949-09-27 | 1950-12-05 | Backer Stanley | Method of sandblasting |
US3427763A (en) * | 1966-07-18 | 1969-02-18 | Woma Maasberg Co Gmbh W | Method of treating solid surfaces |
EP0526087A1 (de) * | 1991-07-27 | 1993-02-03 | Brian David Dale | Düse zum Reinigen oder Schneiden mittels eines Abrasivstrahls |
DE19807917A1 (de) * | 1998-02-25 | 1999-08-26 | Air Liquide Gmbh | Verfahren und Einrichtung zur Erzeugung eines zweiphasigen Gas-Partikel-Strahls, insbesondere mit CO¶2¶-Trockeneispartikeln |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3055149A (en) * | 1959-03-23 | 1962-09-25 | Simpson Herbert Corp | Sand blast gun |
GB1160276A (en) * | 1965-12-28 | 1969-08-06 | Hobson Ltd H M | Improvements in or relating to Work Steadies |
SU449800A1 (ru) * | 1973-02-08 | 1974-11-15 | Нежинский Механический Завод | Устройство дл очистки внутренней поверхности труб |
DE4002787A1 (de) * | 1990-01-31 | 1991-08-01 | Eichbauer Fritz | Vorrichtung zum reinigen von oberflaechen |
JPH04331073A (ja) * | 1991-04-26 | 1992-11-18 | Sony Corp | 遊離微粒子噴射加工装置 |
DE50011976D1 (de) | 2000-08-09 | 2006-02-02 | Techno Coat Fribourg Sa Siders | Strahlvorrichtung |
-
2000
- 2000-08-09 DE DE50011976T patent/DE50011976D1/de not_active Expired - Lifetime
- 2000-08-09 EP EP00117057A patent/EP1182008B1/de not_active Expired - Lifetime
- 2000-08-09 AT AT00117057T patent/ATE314176T1/de not_active IP Right Cessation
-
2003
- 2003-02-27 US US10/375,692 patent/US7090568B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE192600C (de) * | ||||
US2532655A (en) * | 1949-09-27 | 1950-12-05 | Backer Stanley | Method of sandblasting |
US3427763A (en) * | 1966-07-18 | 1969-02-18 | Woma Maasberg Co Gmbh W | Method of treating solid surfaces |
EP0526087A1 (de) * | 1991-07-27 | 1993-02-03 | Brian David Dale | Düse zum Reinigen oder Schneiden mittels eines Abrasivstrahls |
DE19807917A1 (de) * | 1998-02-25 | 1999-08-26 | Air Liquide Gmbh | Verfahren und Einrichtung zur Erzeugung eines zweiphasigen Gas-Partikel-Strahls, insbesondere mit CO¶2¶-Trockeneispartikeln |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7090568B2 (en) | 2000-08-09 | 2006-08-15 | Richard Kreiselmaier | Blasting device |
DE102011082536A1 (de) | 2010-09-11 | 2012-03-15 | Patricia Frielingsdorf | Jet-stream-scheibenreinigungssystem |
Also Published As
Publication number | Publication date |
---|---|
DE50011976D1 (de) | 2006-02-02 |
US7090568B2 (en) | 2006-08-15 |
EP1182008B1 (de) | 2005-12-28 |
ATE314176T1 (de) | 2006-01-15 |
US20030232582A1 (en) | 2003-12-18 |
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