DE1477960A1 - Non-clogging jet fan - Google Patents

Description

Br. Phll. G. B. IIA G E N Patent attorney

8000 MUNICH-SOLLN

Frans Hab penalties 21

Telephone 796213

AL I62o

U7796Q

September 1, 1965

AJEM Laboratories, Bic
38899 Schoolcraft Road
Livonia, Michigan, II SA

Non-clogging jet blower

Priority: .3. September » 1964; UNITED STATES; US Serial; Where, 39% 198

The invention relates to a liquid strand « Blower device used to use liquids carrying particulate matter. In particular concerns the invention provides an improved liquid teccite jet blower device, those- because of their non-clogging mode of operation especially for the use of mirror finish suitable is.

BayeriKhe Vereinsbank Mtudiee

BATHROOM &

U77960

The use of sandblasting as a method of machining metal part surfaces is one of them to the state of the art. Jointly Owned Pending Patent Applications No. 296 133, filed July 18, 1963 by Millhiser et al., and No. 117 444, filed on I5. June I96I by Millhiser, also disclose particularly advantageous surface processing devices and methods, who use the jet blowing of grinding fluid for this purpose. The present application is partial Patent application no. 296 133 is carried forward.

A previous difficulty has been that the nozzles used for sandblasting become clogged. Another difficulty is the abrasive effect of the slurry on the nozzle surfaces. These difficulties previously required a considerable amount of maintenance and reduced the advantages that resulted from them result from abrasive jet blowing.

It is an object of the invention to provide a jet fan assembly to create, which is suitable for the use of grinding sludge, this structure is relative is non-clogging.

It is a further object of the Erfindu ⁿ S, a Strahlge-

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to create blower assembly that is easy to maintain.

It is another object of the invention to provide an ML method to create in which the emery damage is essentially limited to a single replaceable part.

The aforementioned objectives were achieved by creating a jet fan assembly in which the emery sludge is passed through a single open pipe surface and not through a nozzle, the one Can be subject to constipation.

If one of the inclined sides is removed and the other is arranged in such a way that part of the liquid flow engages in the vicinity of the tip of the inclined plate, a powerful ribbon-shaped liquid jet results. The size and the angle of the remaining side walls are such that this deflecting surface extends beyond the line of the extended axis of the blow-off pipe surface with which it meets at the top. The resulting effect is an excellent belt of abrasive and liquid that moves at a slight angle to the axis of the actual blow pipe *

Another advantageous feature of the invention is that parts of the mouth that the lock

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are exposed, can be removed independently of each other and quickly reinstalled in the fan assembly can. Some embodiments of the invention require the feature of the removable parts because of the low abrasive effect of the parts used with them Not mud liquids.

Advantageously, the deflecting surface is at an angle of 5 ° to 15 ° with respect to the axial flow of the Blower media arranged through the AbJh laser tubes.

Further features and advantages of the invention emerge from the following description of one shown in FIG Embodiment shown in the accompanying schematic drawings. .

Fig. 1 is a perspective view showing the jet fan assembly for emery sludge with illustrates the device according to the invention arranged therein,

Fig. 2 is a fragmentary elevational view of the apparatus of Fig. 1 showing the relationship between represents the blow-off pipes and the manifold,

Fig. 5 iet a Aufriesdftrgtstellung from the front of a

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Jet blower device according to the invention. The retaining clips are for a better overview not shown for the inclined plate

Figure 4 is a top plan view of a jet blower device according to Fig. 3 »

Fig. 5 is a side elevational view of the jet fan apparatus of Fig. 5;

FIG. 6 is a side elevational view of the jet blower apparatus attached to the structure of FIG. 1 is,

Figure 7 is a front elevation of the jet blower apparatus according to Fig. 6,

Fig. 8 is a © perspective view of a device, which represents a non-flat plate,

Fig. 9 is an elevation in partial cross-section of a Jet blowing apparatus employing three of the improved devices of the invention,

Fig, Io let an uprising from the side of the device

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Fig. 9 * the additional details of the Illustrated sludge circulation system.

With reference to Figures 1 and 2, the apparatus shown therein is partial, e.g., up to a liquid level 2o, immersed in a container with liquid containing emery sludge in suspension. A propellant fluid is under high pressure

passed through the opening 22 into and through the manifold 24 and through the round nozzle bores 26 thrown out at high speed. The bores 26 are approximately 1 inch (25.4 mm) from the blowdown pipes 28 with a larger inner diameter arranged at a distance, into which the propellant liquid penetrates and a significant amount of the emery sludge laden liquid during its passage entrains between the openings 26 and the tubes 28.

According to FIGS. 5 and 6, the outer ones extend Ends of the tubes 28 through the plate 32 and the foot j5o of the baffle 36 which is mounted on a frame (in the Drawing not shown) is attached by means of angle brackets 34. The liquid emery jet occurs from the blow-off pipes 28 at a very high speed and is pressed against the part to be machined

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which is shown schematically at 37. A deflection surface J> 6 beyond the ends of the blow-off pipes 28 is positioned at a deflection angle therebetween so that the emery jet is easily deflected and concentrated, with the least reduction in speed and abrasion on the deflection surface 36.

Since this device uses a single baffle, i.e. surface 36 with no opposite side, large pieces of emery, agglomerates of emery or contaminating pests can damage this part do not clog.

3 and 5 show a further embodiment of the invention. This embodiment is designed so that the baffle plate 36a can be easily dismantled and attached, for example if so desired is to use a differently shaped sheet metal, such as 36b according to FIG. 8 and as in the one above mentioned patent application No. 296133.

According to FIGS. 3 to 5, the sheet metal 36a has welded-on End members 4oa and retaining clips 46a which are bolted to uprights 42a on a base 44a to support the To hold sheet 36a between the uprights 42a securely.

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Figures 9 and 10 show the device attached to a frame 56 and enclosed within a shield 58, using the above jet fan devices to advantage.

When the devices according to the invention in Ver. binding can be used with a turntable, the * carries the workpiece to be machined, they are

partly, as shown in Fig. 9 with a Part 37c attached, which is arranged so that the Workpiece is cleaned from different angles at the same time. The turntable 62 carries the part 37c, as can best be seen from Fig. Io.

When the fan jets are directed downwards, as shown in FIG. 9, the deflector can 36 are advantageously arranged on the upper side of the bias jet.

Short jet pipes 26c are used to carry the jet fan media to promote from the supply manifolds 22c to the blow-off pipes 28c. The shown in Fig. 1 longer blow-off pipes are normally not necessary for the devices according to Fig. 9 and Io, since the manifolds 22c are arranged in greater proximity to the workpiece.

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Like in Pig. As shown in FIG. 10, the emery sludge is collected below the table 62 and returned to an inlet funnel 68, from where it is directed to the blow-off pipes 28o and carried along by jets from the nozzles 26c. The reflux pipe 7 ° is used to direct the sludge from a collector sump (not shown) below the parts JJo, via the sludge guide plate 72 to the hoppers 68. . |

Disposed below table 62 in Figure 10 is a screen which is used to prevent oversized particles from circulating within the jet blower. Previously, the equipment required a screen with openings that were 1/4 inch (6.35 mm) in rectangular diameter, as larger openings would have clogged the nozzles previously used and thereby terminated or destroyed the effectiveness of the jet processing in the previously used devices to a problem and considerable dead times were required, the screens mn to clean. the inventive device much larger screen openings can be used successfully! · clogging has declined considerably and the focus can now lebung the Auas of Teilohen that would damage the workpiece instead of those that would have just clogged the nozzles used up to now »

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Blow-off pipes, as in Pig. I shown at 28 direct
the emery-containing liquid to the openings 48a. Threaded holes 5oa create a device
e.g.

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Claims (9)

11 U77960 claims. 1. Plüssigkeitsstrahlgebläsevorrichtung characterized in that it an elongated base includes a plurality of openings disposed therein for admitting the liquid promote a plate mounted on the base that is in a deflection angle relationship to the axes of the Openings is arranged, the plate for deflecting and guiding the liquid and the contained therein Solid particles are used. 2. 'Liquid jet blower device according to; Claim 1, characterized in that the plate is removably arranged on the base, 3. Liquid jet blower device according to claim 1, characterized in that the plate is at an angle of 5 ° to 15 ° 'with respect to the axes the openings is arranged. 4. Device for liquid jet blowing with granular Solid bodies, characterized in that it consists of at least one blow-off pipe, a frame device, to keep the pipe in the operating position, one Line to convey the liquid under pressure., A jet opening on the line that extends lengthways into 909839/0407 - Ii - the vent pipe is directed into, a plate which is at a deflection angle with respect to the pipes the axis of the tube is attached to deflect and guide the liquid jet, and one Device for supplying a liquid that supplies solid emery particles to the blow-off pipe, the is arranged next to the jet opening to thereby entrain the emery in the liquid of the jet en. 5. Liquid jet blower device, characterized in that it consists of an elongated base consists of at least one blow-off pipe with an open end, at least one blow-off pipe attached to the base is attached ,, with its axis is directed to a workpiece to be machined and thereby over extending the vent pipe addition, a plate inclined at an angle to the axis of the vent pipe is · and engages in the jet path beyond it, around the liquid jet after leaving the Deflect and guide nozzle. 6. Nozzle according to claim 5, characterized in that the plate has a wave shape in the transverse profile, but is straight in the profile seen along the beam. - 12 -, 909839/0407 147796Q 7. Device for liquid jet blowing, characterized in that it is a combination of a plurality having tubular jet blower channels, which are directed towards a workpiece to be machined, one in plate fixed with respect to the channels, which, beyond their ends, are at a deflection angle relative to theirs Axes is arranged, the plate is used to deflect and guide the beam, a rotatable table, which is designed in such a way that it carries the workpiece to be machined, a device for collecting and ~ Return of the used blasting material, as well as one between the wide door and the circulation device arranged sieve to collect solids from the blowing liquid and to separate out the larger than the Emery are. 8. Liquid jet blower device, characterized in that it consists of an elongated base one opening in the base, one in the base attached and at a deflection angle to the axis of the Opening arranged plate, stand parts at the ends of the plate, on which the plate is removably attached wherein the plate forms a device for the liquid and any particles entrained therein Leaving the nozzle to deflect and guide. - 13 ORIGINAL BATHROOM 909839 / 04Ö7 147796Q 9. All protectable inventions published herein that are not specifically claimed and not otherwise effectively claimed. - 14 909839/0407