Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1989-06-13
1992-01-21
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
137102, 13762412, 138 42, A47L 514
Patent
active
050817370
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for eliminating deposits of floating fibers.
So-called projectile weaving machines are currently coming into ever increasing use. In these projectile weaving machines, the shuttle which carries the bobbin is replaced by a projectile which grasps the weft threads and draws them through the shed. The projectile is guided along its entire path by guiding teeth. To prevent wear of the normally metallic projectile and the metallic guiding teeth, the projectile is lubricated by spraying an oil mist onto the same.
During the processing of so-called "spun yarns" in weaving machines, the presence of floating fibers can never be excluded. In projectile weaving machines, there is then the problem that at least some of the floating fibers come into contact with the oil mist and subsequently enter the fabric as oil impregnated floating fibers. During the following treatment of the fabric, e.g., during dyeing, defects occur in the fabric with the result that entire widths of the fabric must be discarded. The use of cleaning agents before further processing of the fabric is expensive and, in addition to the cost of the cleaning agent, requires a large expense for personnel.
These drawbacks have already been recognized and it is known from the West German Offenlegungsschrift No. 19 19 229 to continuously direct an air stream onto the weaving machine. This air stream is produced by blowers of appropriate capacity, should have a velocity in excess of 300 m/min, preferably about 920 to 6100 m/min, and is directed onto the machine from above as well as transverse to the machine. Here, "pulsating" air streams of 60 to 1000 intervals per minute are to be produced by means of slide valve plates. The continuously operating blowers have the drawback that they use large amounts of energy and that the essentially constant air stream also causes swirling up of an oil mist which then combines with additional floating fibers. Furthermore, the continuous and widespread movement of air inside the weaving room is extremely unpleasant and, in addition, these apparatus are very expensive. The air pulses produced in the known apparatus are also not sufficiently explosion-like to achieve an effective removal of the oil impregnated fibers.
The same problems arise in knitting machines and spinning machines also. Problems with floating fibers and floating dust in other technical fields can similarly be controlled only with difficulty.
It is an object of the invention to provide a device for the explosion-like production of air streams which can be easily constructed and readily installed at arbitrary locations of a weaving machine or other arrangement, is economical and uses small amounts of energy, and does not bother operating personnel working in the weaving room.
In other words, a relatively small, localized, explosion-like air pulse is produced and is intermittently directed only onto those areas of the weaving machine where floating fibers arise, particularly the areas in which floating fibers impregnated with oil mist can arise. A satisfactory loosening of the floating fibers is obtained by the pulsed, short but very strong draft while, on the other hand, the persons working in the weaving room are not bothered. The air consumption required for this is relatively low so that the running energy costs are low and, finally, accumulation of floating fibers or floating fiber wool is prevented.
The time intervals between two cleaning air pulses are preferably about 40 seconds. The short, strong cleaning air pulses generated at short intervals suffice to keep the machine clean
Finally, the invention deals particularly with the production of a throttle for pressurized air in order to go via the same from a conventional main pressurized air conduit containing, for example, pressurized air at 6 bars, to a storage vessel which generates intermittent, explosion-like air pulses.
Exemplary embodiments of the invention are described below with reference to the drawings. The drawings illustrate in
FIG. 1 schematically a
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Gebruder Schmeing GmbH & Co.
Moore Chris K.
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