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EP0045018B1 - Dispositif pour enlever un mélange de grenaille et de déchets dans une installation de grenaillage au moyen d'une roue de projection - Google Patents

Dispositif pour enlever un mélange de grenaille et de déchets dans une installation de grenaillage au moyen d'une roue de projection Download PDF

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Publication number
EP0045018B1
EP0045018B1 EP81105618A EP81105618A EP0045018B1 EP 0045018 B1 EP0045018 B1 EP 0045018B1 EP 81105618 A EP81105618 A EP 81105618A EP 81105618 A EP81105618 A EP 81105618A EP 0045018 B1 EP0045018 B1 EP 0045018B1
Authority
EP
European Patent Office
Prior art keywords
jet
arrangement according
mixture
workpieces
abrasive material
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
Application number
EP81105618A
Other languages
German (de)
English (en)
Other versions
EP0045018A1 (fr
Inventor
Horst Dr. Dr.Ing. Kreikenbaum
Dieter Dr. Dr.Ing. Bass
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.)
Georg Fischer AG
Original Assignee
Georg Fischer AG
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 Georg Fischer AG filed Critical Georg Fischer AG
Priority to AT81105618T priority Critical patent/ATE7670T1/de
Publication of EP0045018A1 publication Critical patent/EP0045018A1/fr
Application granted granted Critical
Publication of EP0045018B1 publication Critical patent/EP0045018B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material

Definitions

  • the invention relates to a device as characterized in the preamble of claim 1.
  • the object of the present invention is to create a device of the type mentioned at the outset, by means of which, with as little investment and operating costs as possible, with little noise and a short construction, the greatest possible removal of the blasted abrasive from workpieces with larger horizontal surfaces and from workpieces with lateral border such as rolled profile beams is guaranteed.
  • the device according to the invention enables the mixture of blasting agent and blasted particles lying on the blasted workpieces to be easily removed with little energy expenditure and little noise pollution.
  • FIG. 1 shows a longitudinal section through a blasting chamber 1 of a centrifugal blasting machine for plate-like or band-shaped workpieces 2.
  • the drivable conveyor rollers 3 arranged in the blasting chamber 1 transport the workpiece 2 through the blasting chamber 1, whereby it is attached to the upper and lower workpiece surfaces the blasting chamber 1 blasting wheel units 4 and 5 arranged above and below is blasted.
  • This device 9 is arranged in a chamber 11 located within the blasting chamber 1 and formed by a partition 10 and has at least one centrifugal wheel 12 and a blow-off device 13. As can be seen from FIG.
  • the centrifugal wheel 12 with a drive motor 14 is arranged on a plate 15 which is rotatably mounted about a pivot axis 28 in a side wall 16 of the blasting chamber 1 or chamber 11.
  • the direction of an axis 18 of the centrifugal wheel 12 with respect to the workpiece surface 8 can be adjusted by means of a swivel drive 17, as a result of which the angle of incidence of a blasting agent jet 19 on the workpiece surface 8 and its direction is changeable.
  • Fig. 3 shows an embodiment of the device 9, in which the centrifugal wheel 12 is arranged obliquely.
  • the blasting agent jet has an oblique component directed against the direction of passage.
  • the blow-off device 13 is fastened directly to the guide device 23, the air nozzles 24 being arranged within the guide device 23.
  • FIGS. 4 and 5 show a further embodiment, in which the centrifugal wheel 12 is arranged such that its axis 18 runs parallel to the workpiece surface 8.
  • the centrifugal wheel 12 is fastened with its drive to a plate 25 which is arranged on the side wall 16 of the blasting chamber 1 or chamber 11 so as to be displaceable in the vertical direction by means of an adjusting device 26.
  • the guide device 23 can be adjusted by fastening it to the plate 25 together with the centrifugal wheel 12, so that it can be optimally adjusted with respect to the workpiece surface 8 with workpieces 3 of different thicknesses and widths.
  • automatic height adjustment is also possible depending on the workpiece thickness.
  • the blow-off device 13 is accommodated in a blow-off chamber 27 arranged after the blasting chamber 1 or chamber 11, the air nozzles 24 being arranged in an arrow shape in or against the flow direction 20, as a result of which the remaining mixture 6 is blown off the workpiece 2 on both sides .
  • FIG. 6 shows a simplified top view of a centrifugal wheel arrangement according to FIG. 4, the axis 18 running parallel to the workpiece surface 8 not also forming an angle a parallel to the direction of travel 20, but to this, so that the blasting agent jet 19 has a movement component opposite or in the direction of travel 20 can have.
  • the centrifugal wheel 12 can be pivotable about the vertically extending pivot axis 28.
  • the centrifugal wheel Due to the blasting agent jet hitting the workpiece surface flatly and approximately transversely to the direction of flow, the surface structure of the already blasted workpiece is not or only insignificantly subsequently impaired, and the largest possible impact component of the blasting agent is created to remove the mixture.
  • the centrifugal wheel has a preferably low discharge speed of approximately 40 m / sec.
  • the centrifugal wheel can have an increased abrasive throughput, which increases the number of impacts acting on the mixture and thus increases the cleaning performance.
  • the blasting agent jet has a movement component opposite to the direction of passage, so that blasting agent or mixture spraying away to the side is preferably transported back into the blasting chamber.
  • centrifugal wheels can be used to remove the mixture.
  • the centrifugal wheels can be arranged one behind the other on a workpiece side or viewed transversely to the direction of passage and in the direction of passage, above the workpiece surface.
  • several centrifugal wheels can be arranged next to each other transversely to the direction of travel and displaceably above the workpieces in this direction, the blasting agent jets acting against the direction of travel directing the mixture lying on the profile beams into an overlying one Drive up the catchment device from where it is on the side, for example is removed by means of a screw or inclined baffle plates.
  • the pneumatic energy required is thus a factor of 10 higher than with the proposed blasting by a centrifugal jet.
  • the workability of the gas from the nozzle outlet is taken as a basis, taking into account the isentropic compression efficiency of the blower, there are efficiency differences with a factor of 15 to 18, which correspond to those between free jets (pneumatic acceleration) and centrifugal jets (mechanical acceleration).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (10)

1. Dispositif pour éliminer un mélange (6) de grenaille et de déchets de pièces qui parcourent horizontalement une installation de grenaillage (1) et sont traitées par la grenaille, en particulier pour des pièces (2) possédant de grandes surfaces horizontales comme par exemple des tôles et bandes, au moyen d'au moins un jet chassant (19), caractérisé en ce qu'au moins un jet chassant est un jet de grenaille produit par au moins une turbine de projection (12) et qui est dirigé à peu près transversalement à la direction de défilement (20) des pièces (2) et rencontre la surface (8) de la pièce à plat ou sensiblement à plat.
2. Dispositif selon la revendication 1, caractérisé en ce qu'au-dessus de la surface (8) de la pièce, est disposé un dispositif déflecteur (23) pour chaque jet de grenaille (19).
3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que l'axe (18) de la ou des turbine(s) de projection (12) s'étend à peu près parallèlement à la surface (8) des pièces.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'angle d'incidence et la direction de chaque jet de grenaille (19) peuvent être modifiés grâce à une possibilité de réglage de chaque turbine de projection (12).
5. Dispositif selon la revendication 4, caractérisé en ce que la turbine de projection (12) est montée sur une paroi latérale (16) de la chambre de grenaillage (1 ), de manière à pouvoir osciller autour d'un axe d'oscillation (28)disposé transversalement à la direction (20) du défilement.
6. Dispositif selon la revendication 5, caractérisé en ce que l'axe d'oscillation (28) s'étend horizontalement (Figures 1 et 2).
7. Dispositif selon la revendication 5, caractérisé en ce que l'axe d'oscillation (28) s'étend verticalement (Figure 6).
8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que la turbine de projection (12) est déplaçable en translation verticalement.
9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que la ou ou les turbine (s) de projection (12) destinée (s) à éliminer le mélange (6) est ou sont disposée (s) à l'intérieur de la chambre de grenaillage (1), et en ce qu'il est prévu, en aval, considéré dans le sens (20) du défilement des pièces, un dispositif de soufflage (13) destiné à éliminer le mélange résiduel (6).
10. Dispositif selon la revendication 9, caractérisé en ce que le dispositif de soufflage (13) est monté sur le dispositif déflecteur (23).
EP81105618A 1980-07-24 1981-07-17 Dispositif pour enlever un mélange de grenaille et de déchets dans une installation de grenaillage au moyen d'une roue de projection Expired EP0045018B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105618T ATE7670T1 (de) 1980-07-24 1981-07-17 Einrichtung zum entfernen eines gemisches aus strahlmittel und reinigungsrueckstaenden bei einer schleuderstrahlmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH565480 1980-07-24
CH5654/80 1980-07-24

Publications (2)

Publication Number Publication Date
EP0045018A1 EP0045018A1 (fr) 1982-02-03
EP0045018B1 true EP0045018B1 (fr) 1984-05-30

Family

ID=4297195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81105618A Expired EP0045018B1 (fr) 1980-07-24 1981-07-17 Dispositif pour enlever un mélange de grenaille et de déchets dans une installation de grenaillage au moyen d'une roue de projection

Country Status (4)

Country Link
EP (1) EP0045018B1 (fr)
AT (1) ATE7670T1 (fr)
DE (1) DE3163874D1 (fr)
YU (1) YU162781A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113701898A (zh) * 2021-10-29 2021-11-26 如皋市宏茂重型锻压有限公司 一种锻件温度检测装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014469A (en) * 1986-01-31 1991-05-14 Watts W David Shot removal system
US5107629A (en) * 1989-11-09 1992-04-28 The Celotex Corporation Texturing of acoustical mineral fiberboard with wheel blast machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE98588C (fr) *
US3977128A (en) * 1975-04-21 1976-08-31 Goff James R Surface treating apparatus
GB1515989A (en) * 1976-06-18 1978-06-28 St George S Engs Ltd Shot-blasting equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113701898A (zh) * 2021-10-29 2021-11-26 如皋市宏茂重型锻压有限公司 一种锻件温度检测装置
CN113701898B (zh) * 2021-10-29 2021-12-21 如皋市宏茂重型锻压有限公司 一种锻件温度检测装置

Also Published As

Publication number Publication date
ATE7670T1 (de) 1984-06-15
DE3163874D1 (en) 1984-07-05
YU162781A (en) 1983-10-31
EP0045018A1 (fr) 1982-02-03

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