US967849A - Dust-collector. - Google Patents

Description

I. STEINBR.

DUST COLLECTOR.

APPLICATION FILED JANA, 1910.

Patented Aug. 16, 1910.

INVENTOR \SHDOR STEINER,

WlTNESSES:

ATTORNEY UNITED STATES PATENT OFFICE.

ISIIDOB STEINEB, OI MUNICH, GERMANY.

DUST-COLLECTOR.

Specification of Letters Patent.

Patented Aug. .16, 1910.

Application fled January 3, 1810. Serial No. 538,158.

I treating and cleaning grain, principally malt.

It relates further to one part of a compound apparatus, which consists as a whole of three arts, a separator in which the grain is :treed from the combs, a second device called the aspirator, and a third device the dust-collector The first, or separator has been applied for by me, under date of July 26th, 1909, and Serial No. 508653, and the second, or aspirator, forms the subject matter of an application filed on the 3rd day of Jan. 1910, Serial No. 536,152.

The present invention relates specifically to the apparatus called the dust-collector into which the air current, laden with the combs and dust particles, passes, with the result that the latter are completely separated from the air current, so that the air leaves the dust collector in a purified condition.

In the drawings: Figure 1 is a side elevation of the entire apparatus consisting of the three parts, separator, aspirator, and dust collector. Fig. is a vertical section through the dust collector. Fig. 3, a plan view of the same, and Fig. 4;, a cross section on the section line X-X, of Fig. 2.

The grain is introduced into the apparatus S at the opening 0?, and automatically reaches the aspirator A through the pipe e after being polished and freed from the combs. The completely cleaned grain leaves the aspirator at f, while the combs and particles of dust are sucked away and carried ofl to the dust-collector 1, through a pipe 9, by an air current provided in an exhauster, or the like, not shownin detail, which is driven, for example, by an electric motor to be coupled up at h. The combs and dust particles, are separated from the air current 1n the dust collector 1, and fall through the pipe 2' below, while the purified air leaves at 6 at the top.

Grain cleaning machines and apparatus for the separation from an air current of combs, dust and the like are already known, in which the air current is conducted tangentially into a vessel provided with a central of the air current circulatin outlet pipe, in such a Wa that on circling around t e outlet pipe, t e heavy particles are thrown outward by centrifu a1 force and separated by their own weig t, while the purified air leaves the central outlet pipe. Further apparatus for separating dust are also known in which the upper part of the vesisel is provided, instead of with a tangent1a turbme, and the air current containing dust or the like thus enters the vessel tangentially, so that in this case the above described eifect is essentially obtained. The

arrangement of a cylinder provided with guiding vanes before the air outlet of the vessel 1s also known for the purpose of dividing the current up and carrying it to the outlet pipe.

The heavy particles are separated (in a known manner) by the centrifugal force in the outer funnel shaped vessel 1, (Fig. 2) but at the same time the above described device insures that by diminishing the velocity of the air as much as possible on passing from the outer to the inner vessel an opportunity is given to the finer and lighter particles of separating by means of their own weight. It is essential in this case that the turbine-like vanes of the inner cylinder be arranged in such a manner that the air supplied to the outer vessel and circulating around the lnner vessel. exerclses a sucking motlon. As, however, the air must necessarily pass from the outer vessel to the in ner vessel between the turbine-like vanes, no other way being open to it, the velocity of the air on passing through is almost entirely destroyed by the sucking action produced between the vanes, so that the smallest vess

In the form shown, by way of example,

in Figs. 2, 3 and 4, the air containing combs particles are separated in the inner e and particles of dust and having a suitable veloclty is supplied at 2 through the tangential pipe 3 to the above mentioned vessel 1, so that a current circulating around the inner cylinder 4 is first produced. The inner cylinder, as already mentioned above, is

provided along its .whole length and on its whole circumference with transverse walls 5 (Fig. 2) curved in the manner of turbine vanes, which are so arranged that by means tion of the arrow shown in ig. 4:, the air contained in the interior of the cylinder ipe, with vanes similar to those of a 65 in the direcwould be sucked outward. As, however, the

I air is being continually, supplied to the vessel 1, it must esca throu h the vanes to the interior of t e cylin er and thence through thepipe 6. As the air asses be tween the vanes its velocity is lminished to such an extent or destroyed, by the sucking action described above, that the combs and dust particles are completely separated, as has been proved by ex eriment. These articles first fall through t e funnel-shaped bottom of the cylinder 4, and thence throu h the o ening provided at the bottom of't e cylind er 1 together with the particles already separated, and fall into a suitable receiver or into a pipe through which the are removed either alone or together wit the coarser particles conve ed thither b the worm in the pipe is. The unnel shap bottom has only a small central opemn for the dust to fall through, and the small size .of said opening prevents any appreciable amount 0 air from esc'apin through it:

almost the entire volume of air entering the vessel 1 being thus compelled to pass through the walls 'of the cylinder 4. The regularity semen of {low through the vanes 5 is insured by the cylindrical form m which the are grouped.

The particular advantage 0 this arrangement consists, on the one hand, in the fact a that the apparatus does not require .any power, and, on the other hand, that the degree of separation can be regulated as required by suitablydetermining the curvature of the vanes and velocity of entrance. 3

Having thus fully illustrated and described my invention, what I claim, is:

A dust collector, com rising an outer vessel, a cylinder provided with vanes inclosed within said vessel, an air tube communicat- 4(

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