DE194184C

DE194184C -

Info

Publication number: DE194184C
Application number: DENDAT194184D
Authority: DE

Description

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KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Gegenstand der Erfindung ist ein Gebläse zum Schärfen von Werkzeugen, insbesondere Feilen u. dgl.,, bei welchem feuchtes Schleifmaterial und Luft mittels eines Dampfstrahles angesaugt wird, um eine Erhitzung der Werkzeuge und den Verlust der Härtung zu vermeiden. Die bisher auftretende Kondensation des Dampfstrahles hat den wesentlichen Nachteil, daß die Strahlwirkung vermindert und The invention relates to a blower for sharpening tools, in particular Files and the like, in which moist abrasive material and air by means of a steam jet is sucked in to avoid overheating of the tools and loss of hardening. The previously occurring condensation of the steam jet has the major disadvantage that the jet effect is reduced and

ίο daher nur eine geringe Angriffskraft auf das zu schärfende Werkzeug ausgeübt wird.ίο therefore only a low attack force on the tool to be sharpened is exercised.

Die Erfindung bezweckt, die Kondensation des Blasstromes zu vermeiden. Zu diesem Zwecke wird derjenige Raum der Vorrichtung, aus welchem die Luft abgesaugt wird, erhitzt, so daß die Luft eine derartige Temperatursteigerung des Schleifmaterials bewirkt, daß die Kondensation verhindert wird.The aim of the invention is to avoid condensation of the blowing stream. To this Purpose is that room of the device from which the air is extracted, heated so that the air causes such an increase in temperature of the abrasive material, that condensation is prevented.

Eine besondere Ausführungsforni der Erfindung besteht darin, daß eine Luftstrahldüse innerhalb der Dampfstrahldüse angeordnet ist, wodurch die Wirkung des Strahles durch Einführung erwärmter Druckluft noch gesteigert wird.A special embodiment of the invention consists in that an air jet nozzle is arranged within the steam jet nozzle is, whereby the effect of the jet is increased by the introduction of heated compressed air.

Der Erfindungsgegenstand ist auf der Zeichnung in einem Ausführungsbeispiel veranschaulicht. The subject matter of the invention is illustrated in the drawing in an exemplary embodiment.

Fig. ι zeigt die Vorrichtung in schaubildlicher Darstellung nebst teilweisem Schnitt,Fig. Ι shows the device in diagrammatic form Representation with partial section,

Fig. 2 im Längsschnitt nebst teilweiser Ansicht.Fig. 2 in longitudinal section together with a partial view.

Fig. 3 und 4 sind Schnitte nach 3-3 und 4-4 der Fig. 2.FIGS. 3 and 4 are sections according to 3-3 and 4-4 of FIG.

Das aus einem mit Dampfeinlaß 17 in seinem dicht schließenden Deckel versehene Gehäuse 10 der Vorrichtung besteht aus einem oberen, auf Füßen 13 ruhenden Teil 11, an den sich nach unten ein trichterförmiger Teil 12 anschließt.The one provided with steam inlet 17 in its tightly fitting lid Housing 10 of the device consists of an upper part 11 resting on feet 13, which is followed by a funnel-shaped part 12 at the bottom.

Das Schleifmaterial, am besten ,aus einer Mischung von Karborundum (2 Si C -\- 2 C O) und gemahlenem Quarz bestehend, wird in einem an das untere Ende des Teiles 12 angebolzten Behälter 18 eingefüllt, dessen Bodenöffnung 24 mittels eines Schiebers 25 verschließbar ist. Die Verbindung dieses Behälters mit dem Trichter 12 wird durch öffnungen 19 (Fig. 3) hergestellt; mittels Klappen 20, deren bei 21 (Fig. 1) an die Seitenwände des Trichters angelenkte Arme 22 mit nach außen reichenden Stangen 23 versehen sind, können die öffnungen 19 ganz oder teilweise verschlossen 'werden, um den -Zulauf des während der Arbeit der Maschine in das Gehäuse eingeblasenen und in der Spitze des Trichters sich ansammelnden Schleifmaterials in den Behälter 18 zu regeln.The grinding material, preferably consisting of a mixture of carborundum (2 Si C - \ - 2 CO) and ground quartz, is poured into a container 18 bolted to the lower end of part 12, the bottom opening 24 of which can be closed by means of a slide 25 . This container is connected to the funnel 12 through openings 19 (FIG. 3); by means of flaps 20, the arms 22 of which are hinged to the side walls of the funnel at 21 (FIG. 1) and are provided with outwardly reaching rods 23, the openings 19 can be completely or partially closed in order to prevent the infeed of the during operation of the machine Abrasive material blown into the housing and accumulating in the tip of the hopper into the container 18.

Der Trichter 12 wird bis zur Höhe eines Uberlaufrohres 26 mit Wasser gefüllt, das sich während des Betriebes durch an den Wänden des Teiles 11 sich bildendes Kondensationswasser ergänzt und nicht allein dazu dient, das Schleifpulver feucht zu halten, sondern auch leichte und ölige Teile desselben aufzunehmen und durch das Uberlaufrohr zu entfernen.The funnel 12 is filled to the level of an overflow pipe 26 with water, the during operation by condensation water forming on the walls of part 11 supplements and serves not only to keep the abrasive powder moist, but also light and oily parts of the same and remove it through the overflow pipe.

Claims

A tube 41 connects to the side wall of the container 18, into which a tube 40 screwed to a gooseneck 39 is inserted. The gooseneck goes down through the front wall 14 of the housing part 11 and opens into this with a nozzle 32, above which a plate 33 is attached by means of clamp 34, which is used for the support of the tools to be inserted through an opening 15 in the wall 14 under a shield 16 which are to be sharpened. An extension 27 of the gooseneck forms the housing for the mouthpiece 30 of a steam jet device, which is surrounded by an air chamber 29 and which is fed through a pipe 35 provided with a shut-off valve 36. In the mouthpiece 30, the mouthpiece 31 of an air line 37 is arranged, which can be opened or closed by means of valve 38. Near the bottom of the container 18, a pipe 43 is mounted in the wall opposite the confluence of the pipe 41, into which a pipe 42 opens which is provided with a cross piece 42 'above the water level in the funnel 12 and is intended to remove hot air from the take up upper space 11 of the housing and to heat the grinding material so far that no condensation of the steam jet can take place during its action on the tool to be sharpened. In the pipe 43, a steam jet nozzle 44 is used, which is fed to a valve 46 provided with a pipe 45 which branches off from the steam pipe 35 via the valve 36. A small gap can be left between the inner end of the tube 43 and the mouth of the tube 41 (FIG. 2), or the tube 43 can be connected directly to the tube 41 and provided with relatively fine bores between this and the connection of the air tube 42 will. As soon as the valve 36 is opened, the steam emerging from the mouthpiece 30 causes an air void in the chamber 29 and thereby the pulling up and ejection of the material located in the container 18. The ejected material collects in the tip of the funnel 12 and can be left behind into the container 18 through the openings 19 as desired. The mixture of air and steam sucked in through the pipe 42 from the housing part ii will already have the temperature of the boiling water after a few minutes and heat the grinding material to this and itself a higher temperature, so that this material causes condensation of the steam jet before and during of the impact "cannot take place on the tool now introduced at 15. If the steam pressure is not strong enough for the desired effect on the tool, the wind line 37 is turned on, the compressed air in the pipe 31 by means of the steam flowing around it is heated sufficiently to prevent condensation of the steam when it emerges from the nozzle.Furthermore, the supply of grinding material from the container 18 into the riser pipe 40 together with the gases sucked in from 11 can be accelerated by opening the tap 46. The amount of this material can be accelerated can be regulated by means of the cocks 48 (Fig. 4), which are inserted into knee tubes 47 through which d he air space 29 is connected to the housing part 11 at 49. The cleaning of the container 18 can thereby be facilitated; It will be noted that a large portion of the abrasive material can be collected in the hopper 12 by keeping the flaps 20 closed. Godfather ν τ claims:

1. Blower for sharpening tools, with which moist abrasive material and air is sucked in by means of a steam jet, characterized in that the air from a heated Space (11) is sucked off, which heats the grinding material so far that none Condensation of the blow stream can occur.

2. Blower according to claim 1, characterized in that an air jet nozzle (31) is arranged inside the steam jet nozzle (30) to the effect of the Increase the jet by introducing heated compressed air.

1 sheet of drawings.