EP1380387B1 - Strahleinrichtung - Google Patents
Strahleinrichtung Download PDFInfo
- Publication number
- EP1380387B1 EP1380387B1 EP03014979A EP03014979A EP1380387B1 EP 1380387 B1 EP1380387 B1 EP 1380387B1 EP 03014979 A EP03014979 A EP 03014979A EP 03014979 A EP03014979 A EP 03014979A EP 1380387 B1 EP1380387 B1 EP 1380387B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- shell
- blasting device
- blast wheel
- supply line
- 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 - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/06—Impeller wheels; Rotor blades therefor
- B24C5/068—Transferring the abrasive particles from the feeding means onto the propeller blades, e.g. using central impellers
Definitions
- the present invention relates to a jet device for the machining of workpiece surfaces by means of a granular blasting medium, with a rotary drivable Blower with spinning blades, with a the Impeller with the exception of a blasting abrasive ejection area surrounding impeller housing, with a supply line for the supply of the blasting agent, with a rotating the blast wheel, radially inside the Centrifugal vanes arranged, concentric distributor sleeve, in which the supply line opens and with a plurality of apertures is executed in their scope, by the supplied blasting agent in the interstices passes between each two adjacent centrifugal blades.
- a jet device of the type mentioned is from the utility model DE-U 1 858 683.
- the blasting agent passes through a feed tube towards the blasting agent inlet of the blasting device.
- Immediately before entering the jet facility opens the supply line for the blasting agent in a Compressed air supply line.
- compressed air supply line Through the through the compressed air supply line supplied compressed air is the blasting agent accelerated and by a non-rotating, narrowing Nozzle tube towards the center of the blast wheel promoted.
- the nozzle tube ends immediately in front of you with the blast wheel rotating Zuteilrad, in his Has a plurality of openings, which the passage the blasting agent-air mixture in the radial direction serve outside.
- a sleeve-like Radially outside the nozzle tube and the metering wheel is a sleeve-like at a small distance from it Housing firmly arranged.
- the sleeve-like housing has approximately congruent with the openings in Zuteilrad a Zuteilausnaturalung in its scope, through the jet-air mixture further radially outward enters the area of the rotating spinner wheel.
- the sleeve-like housing has a Abgradausnaturalung. This discharge recess is in the axial direction relative to the blast wheel offset so that the Ab technologicalausbianung seen in the axial direction in front of the blast wheel is positioned.
- the Abgradausnaturalung then opens in a space between the blower wheel and a housing surrounding the blast wheel is formed.
- the Ab slaughterhouseung serves here, an excess of discharged blast media-air mixture to blockages the jet device by an excess of Exclude supplied blasting agent.
- Excess of supplied blasting agent can be relative here easily occur because the supplied compressed air for a effective promotion of blasting material in the center of the Blower ensures, to avoid a lack of blasting agent in practice, the supply of the blasting agent generally set a bit higher than necessary becomes.
- This deliberate excess of supplied Blasting agent is here unless it's overly large is not harmful, since the excess of blasting agent, as previously explained, indemnified by the discharge recess, but also for the machining of the workpiece surface useless, is dissipated.
- the task arises a jet device of the type mentioned above create a more efficient way of working with simplicity Use of the abrasive used becomes.
- a particularly effective Function of the jet device is achieved by that through the air inlet opening or openings in the guide sleeve air in the inflowing blasting agent initiated and in the center of the jet device with the Blasting agent is mixed, making a very light and Low-resistance, transportable mixture of air and abrasive will be produced.
- the required amount of air is provided by the jet device with her already existing blast wheel without the Requirement of an additional blower or additional Air scoops exists, so that the construction of the Jet device advantageously remains simple.
- each air inlet opening has a cross-section which is small compared to the cross section of the opening for the blasting agent in the scope of the guide sleeve. In this way a compact design is ensured because of the Air inlet openings seen in the axial direction of the guide sleeve only a relatively short section of their length needed becomes.
- each air inlet opening has a round cross-section having rounded front and rear ends.
- the blast wheel housing at a distance from an outer housing surrounded, with the exception of an opening for the Blasting agent ejection area of the blast wheel housing closed is, passing through a gap between Impeller housing and outer housing air, preferably from an area next to the blast media ejection area, can be guided to the guide sleeve.
- the blast wheel and the distributor sleeve by an externally flanged to the outer housing engine are driven, the engine on an end wall the outer housing is arranged, wherein the supply line for the blasting agent in the opposite, other end wall the outer housing is located and wherein the supply line as Tube formed with a pipe flange and detachable with the associated end wall is connected.
- the invention proposes that the supply line forming pipe in an arc between about 30 ° and 60 ° curved from above coming into the outer housing and pointing substantially in the axial direction in or near the beginning of the distribution sleeve ends.
- the blasting agent through the supply line can so the Gravity be exploited, which is special conveyors dispensable on the side of the supply line power.
- the distributor sleeve facing end portion of the supply line is formed with a step, wherein an upper Part of the end region shorter and a lower part of the end region is longer.
- this preferably consists of two interconnected parts, namely one hollow cylindrical sleeve part made of an abrasion-resistant material and from a connected flange part of a less abrasion-resistant, easier-to-machine material.
- one hollow cylindrical sleeve part made of an abrasion-resistant material and from a connected flange part of a less abrasion-resistant, easier-to-machine material.
- this is only for the actual of the blasting agent claimed hollow cylindrical sleeve part the abrasion-resistant, much more expensive material used, while for the unclaimed by the blasting agent Part of the baffle a less abrasion resistant, lighter editable and also cheaper material used becomes.
- the guide sleeve or optionally at least their sleeve part a sintered metal or ceramic. These materials are particularly resistant to abrasion and therefore very good for the heavily loaded guide sleeve or its hollow cylindrical Sleeve part suitable.
- FIG. 1 of the drawing shows a jet device 1 in FIG a running in a vertical plane cross-section.
- the jet device 1 comprises an outer housing 10, the formed by two end walls 11, 12 and a peripheral wall 13 is.
- a Impeller housing 20 is arranged, in which a blast wheel 2 is housed.
- the blast wheel 2 is through one in Figure 1 right visible only to a small extent Drive motor 27 via a drive shaft 28 to a Rotary axis 29 rotatably drivable.
- the motor 27 is by means of a Motor flange 27 'detachable with the rest of the jet device 1 connected.
- the blast wheel housing 20 has two end walls 21, 22nd and a peripheral wall 23. Towards the bottom is the blast wheel housing 20 open and forms there a blasting means ejection area 26. That sticks out with its lower part Impeller housing 20 through an opening 16 in a Bottom plate 14, which is a part of the outer housing 10th forms.
- the lower part of the jet device 1 forms a guide plate 15, congruent in its center with the blast media ejection region 26 open and the leadership of the jet device 1 via a to working workpiece serves.
- the blast wheel 2 is, as usual, with interchangeable Centrifugal blades 24 populated in the radial direction are arranged pointing.
- a distributor sleeve 25 in its Circumference with one or more openings 25 'to Passage is provided by blasting agent. Because of your Connection with the blast wheel 2 rotates the distributor sleeve 25 together with the blast wheel 2 in operation the jet device 1.
- the Guide sleeve 3 has a flange 21, by means of which the Guide sleeve 3 with the left in Figure 1 end wall 11 of the Outer housing 10 is releasably connected.
- the guide sleeve 3 is thus fixed within the jet device. 1 arranged and does not rotate.
- the guide sleeve 3 has in its wall, an opening 32, of substantially the same size as the openings 25 'in the distributor sleeve 25.
- the guide sleeve has the third in its wall several smaller air inlet openings 33, axially offset towards the left end wall 11 are so that they are axially outside the range of motion the centrifugal blades 24 are located.
- the jet device 1 comprises a feed line 4 for the blasting agent.
- the supply line 4 has the form here a curved pipe socket, coming from above a Describes arc of about 60 ° in the device 1 inside.
- the free end of the supply line 4 is used as a connection flange for a supply line not shown here executed from a blasting agent reservoir.
- the inner end 42 of the feed line 4 is provided with a step 43 formed, wherein the end portion 42 in its lower Part longer and shorter in its upper part is. The lower, longer part of the inner end region 42 the supply line 4 protrudes into the interior of the distributor sleeve 25th
- the blasting medium passes in the sense of the drawn on the outer flange 40 Arrow through the lead 4 in the interior of the Distributor sleeve 25, wherein this supply of the blasting agent done without the use of compressed air.
- the blasting agent passes from the interior of the distributor sleeve 25 through the Openings 25 'and through the opening 32 of the Guide sleeve 3 in the radial direction outward into the interstices between each two adjacent centrifugal blades 24 of the blast wheel 2.
- the rotating blast wheel 2 accelerates the abrasive and throws it with high Speed through the blasting means ejection area 26 out. Thereafter, the blasting agent then hits a to be processed Workpiece surface, for example around there to carry out a surface cleaning.
- the rotating blast wheel 2 with its centrifugal blades 24 acts in the illustrated-jet device. 1 at the same time as a radial compressor.
- the air from the inside the blower wheel housing 20 is replaced by the centrifugal blades 24 also accelerated and along with the Blasting agent by the blasting means ejection region 26 after promoted outside. This occurs in the center of the spinner a negative pressure. This ensures that air through a gap 17 between the outer housing 10 and the Impeller housing 20 from the area below the bottom plate 14 to the center of the jet device 1 flows.
- the incoming air first passes through the air inlet openings 33 of the guide sleeve 3 through and flows then partly into the gap between the guide sleeve 3 and rotating distributor sleeve 25 and partly in the interior the distributor sleeve 25.
- both areas mixes the incoming air with the supplied blasting agent and thus ensures easier mobility of the blasting medium.
- Impeller 2 increases the throughput of blasting agent, whereby a corresponding increase in work performance the jet device 1 on a workpiece surface is achieved. No advantage for it Compressed air source and no separate or integrated blower requires what the jet device 1 advantageous easy holds.
- Figure 2 of the drawing also shows in vertical cross-section the guide sleeve 3 as part of the jet device. 1 from Figure 1.
- Figure 2 illustrates the hollow cylindrical Form of the guide sleeve 3.
- the guide sleeve 3 consists of two parts, namely a sleeve part 30 and a flange 31. These two parts 30, 31 are firmly connected by means of a riveted joint.
- the opening 32 In the sleeve part 30 is the opening 32, which has the shape of a relatively large window and positioned relatively close to the right front end of the guide sleeve 3 is.
- the air inlet openings 33 In the direction of the flange 31 are down in the sleeve member 30, the air inlet openings 33 attached.
- the air inlet openings 33 are here with a round cross-section and with rounded 34 on the inner and formed at the outer end, as smooth as possible To allow air flow.
- the division of the guide sleeve in the two part 30, 31 allows the use of special Materials for the two parts.
- the sleeve part 30 preferably consists of a particularly wear-resistant Material, such as sintered metal or ceramic, there this sleeve member 30 is heavily stressed by the blasting agent becomes.
- the not claimed by the blasting agent Flange member 31 may be made of a less abrasion resistant and be made for easier machinable material.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
- daß die Leithülse weiterhin mit wenigstens einer Lufteinlaßöffnung in ihrem Umfang ausgeführt ist, die in Axialrichtung gesehen außerhalb des Schleuderradgehäuses liegt und durch die bei rotierendem Schleuderrad durch dessen Pumpwirkung Luft von außen her in die Leithülse einleitbar und dem Strahlmittel zumischbar ist.
- Figur 1
- eine Strahleinrichtung im Vertikalschnitt und
- Figur 2
- eine Leithülse als Teil der Strahleinrichtung aus Figur 1, ebenfalls im Vertikalschnitt, in vergrößerter Darstellung.
Claims (12)
- Strahleinrichtung (1) für die Bearbeitung von Werkstückoberflächen mittels eines körnigen Strahlmittels, mit einem drehantreibbaren Schleuderrad (2) mit Schleuderschaufeln (24), mit einem das Schleuderrad (2) mit Ausnahme eines Strahlmittelauswurfbereichs (26) umgebenden Schleuderradgehäuse (20), mit einer Zuleitung (4) für eine druckluftlose Zuführung des Strahlmittels, mit einer mit dem Schleuderrad (2) rotierenden, radial innerhalb der Schleuderschaufeln (24) angeordneten, konzentrischen Verteilerhülse (25), in die die Zuführleitung (4) einmündet und die mit mehreren Durchbrechungen (25') in ihrem Umfang ausgeführt ist, durch die das zugeführte Strahlmittel in die Zwischenräume zwischen je zwei benachbarten Schleuderschaufeln (24) gelangt, wobei
zwischen der Verteilerhülse (25) und dem radial inneren Ende (24') der Schleuderschaufeln (24) eine verdrehfeste Leithülse (3) angeordnet ist,
die Leithülse (3) mit wenigstens einer Durchbrechung (32) in ihrem Umfang ausgeführt ist, durch die das zugeführte Strahlmittel nach seinem Durchtritt durch die Durchbrechungen (25') in der Verteilerhülse (25) in die Zwischenräume zwischen den je zwei benachbarten Schleuderschaufeln (24) gelangt,
dadurch gekennzeichnet, daß die Leithülse (3) weiterhin mit wenigstens einer Lufteinlaßöffnung (33) in ihrem Umfang ausgeführt ist, die in Axialrichtung gesehen außerhalb des Schleuderradgehäuses (20) liegt und durch die bei rotierendem Schleuderrad (2) durch dessen Pumpwirkung Luft von außen her in die Leithülse (3) einleitbar und dem Strahlmittel zumischbar ist. - Strahleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß in der Leithülse (3) über deren Umfang verteilt mehrere Lufteinlaßöffnungen (33) vorgesehen sind.
- Strahleinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jede Lufteinlaßöffnung (33) einen Querschnitt aufweist, der klein ist gegenüber dem Querschnitt der Durchbrechung (32) für das Strahlmittel im Umfang der Leithülse (3).
- Strahleinrichtung nach Anspruch 3, dadurch gekennzeichnet, daß jede Lufteinlaßöffnung (33) einen runden Querschnitt mit ausgerundetem vorderen und hinteren Ende (34) aufweist.
- Strahleinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Durchbrechung (32) im Umfang der Leithülse (3) ein Fenster mit im wesentlichen rechtwinkligen Ecken ist, das sich in Umfangsrichtung der Leithülse (3) über einen Winkel zwischen etwa 30 ° und 60° erstreckt.
- Strahleinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Schleuderradgehäuse (20) mit Abstand von einem Außengehäuse (10) umgeben ist, das mit Ausnahme einer Öffnung (16) für den Strahlmittelauswurfbereich (26) des Schleuderradgehäuses (20) geschlossen ist, wobei durch einen Spaltraum (17) zwischen Schleuderradgehäuse (20) und Außengehäuse (10) Luft, vorzugsweise aus einem Bereich neben dem Strahlmittelauswurfbereich (26), zur Leithülse (3) führbar ist.
- Strahleinrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Schleuderrad (2) und die Verteilerhülse (25) durch einen außen an das Außengehäuse (10) angeflanschten Motor (27) antreibbar sind, wobei der Motor (27) an einer Stirnwand (12) des Außengehäuses (10) angeordnet ist, wobei die Zuleitung (4) in der entgegengesetzten, anderen Stirnwand (11) des Außengehäuses (10) liegt und wobei die Zuleitung (4) als Rohr mit einem Rohrflansch (41) ausgebildet und lösbar mit der zugehörigen Stirnwand (11) verbunden ist.
- Strahleinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das die Zuleitung (4) bildende Rohr in einem Bogen zwischen etwa 30 ° und 60°gekrümmt von oben kommend in das Außengehäuse (10) verläuft und im wesentlichen in Axialrichtung weisend im oder nahe dem Anfangsbereich der Verteilerhülse (25) endet.
- Strahleinrichtung nach Anspruch 8, dadurch gekennzeichnet, daß der der Verteilerhülse (25) zugewandte Endbereich (42) der Zuleitung (4) mit einer Stufe (43) ausgebildet ist, wobei ein oberer Teil des Endbereichs (42) kürzer und ein unterer Teil des Endbereichs (42) länger ausgebildet ist.
- Strahleinrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die Leithülse (3) an ihrem zuleitungsseitigen Stirnende mit einem Montageflansch (31) ausgebildet ist, der lösbar mit dem Außengehäuse (10) verbunden ist.
- Strahleinrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Leithülse (3) aus zwei miteinander verbundenen Teilen (30, 31) besteht, nämlich aus einem hohlzylindrischen Hülsenteil (30) aus einem abriebfesten Material und aus einem damit verbundenen Flanschteil (31) aus einem weniger abriebfesten, leichter bearbeitbaren Material.
- Strahleinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Leithülse (3) oder gegebenenfalls zumindest deren Hülsenteil (30) aus einem Sintermetall oder aus Keramik besteht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10231482 | 2002-07-12 | ||
DE10231482A DE10231482A1 (de) | 2002-07-12 | 2002-07-12 | Strahleinrichtung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1380387A1 EP1380387A1 (de) | 2004-01-14 |
EP1380387B1 true EP1380387B1 (de) | 2005-05-18 |
EP1380387B9 EP1380387B9 (de) | 2005-09-28 |
Family
ID=29723858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03014979A Expired - Lifetime EP1380387B9 (de) | 2002-07-12 | 2003-07-02 | Strahleinrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1380387B9 (de) |
DE (2) | DE10231482A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103567886A (zh) * | 2013-11-06 | 2014-02-12 | 江苏龙城铸造机械科技有限公司 | 一种型材的横向排列、纵向分步进给上料装置及方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115338782A (zh) * | 2022-08-29 | 2022-11-15 | 浙江柯蓝工贸有限公司 | 一种金属锅体高硬度耐蚀表面处理用喷砂机及其喷砂方法 |
CN117655935B (zh) * | 2023-12-08 | 2024-08-16 | 江苏天坦能源有限公司 | 一种光伏边框支架耐腐蚀涂层镀覆处理装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1390286A (fr) * | 1964-01-04 | 1965-02-26 | A Sisson Lehmann Ets | Perfectionnements aux dispositifs de projection, par turbines, de particules solides |
US3867791A (en) * | 1974-05-13 | 1975-02-25 | James R Goff | Abrasive blasting machine |
DE3814192A1 (de) * | 1988-04-27 | 1989-11-09 | Schlick Roto Jet Masch | Verfahren und vorrichtung zur entfernung von beschichtungen auf kunststoff-laminaten |
DE4410629A1 (de) * | 1994-03-26 | 1995-09-28 | Schlick Roto Jet Masch | Schleuderrad mit Verteilerrad |
DE4410628C2 (de) * | 1994-03-26 | 1996-09-19 | Schlick Roto Jet Masch | Schleuderrad mit fixierten Schleuderrad-Schaufeln |
-
2002
- 2002-07-12 DE DE10231482A patent/DE10231482A1/de not_active Withdrawn
-
2003
- 2003-07-02 DE DE50300550T patent/DE50300550D1/de not_active Expired - Lifetime
- 2003-07-02 EP EP03014979A patent/EP1380387B9/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103567886A (zh) * | 2013-11-06 | 2014-02-12 | 江苏龙城铸造机械科技有限公司 | 一种型材的横向排列、纵向分步进给上料装置及方法 |
CN103567886B (zh) * | 2013-11-06 | 2017-01-04 | 江苏龙城铸造机械科技有限公司 | 一种型材的横向排列、纵向分步进给上料装置及方法 |
Also Published As
Publication number | Publication date |
---|---|
DE10231482A1 (de) | 2004-01-29 |
EP1380387B9 (de) | 2005-09-28 |
DE50300550D1 (de) | 2005-06-23 |
EP1380387A1 (de) | 2004-01-14 |
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