US2044915A - Separating device - Google Patents

Description

June 23, 1936. A. J. MOSLEY SEPARATING DEVICE Filed Au 9, 1935 2 Sheets-Sheet 1 jiiv/eni'ofi W866i f fosl e June 23, 1936. A. J. MosLEY SEPARATING DEVICE Filed Aug. 9, 1933 2 Sheets-Sheet 2 Zia/anion CZZ/fied Jflfoale Patented June 23, 1936 UNITED STATES PATENT" OFFICE g 2,044,915 SEPARATlNG DEVICE Alfred Mosley, Aurora, 111. Application August 9, 1933, Serial Ne. 684,372 4 Claims. Cl.209- 144) The invention .relates to means for separating from granular material the coarser from the finer P rticles thereof.

'A preferred embodiment of the invention is 5 herein shown and will be described, and in the accompanying drawings illustrating it,

Fig. l is a side view of a reducing mill and of the separator associated therewith, the latter being drawn to a larger scale and being shown partly in section;

mm. 2 is a sectional view on the line 2-2 of l; :18. 3'is a detail section on the line-H of D 1; Fig.4isa viewsimilartoFig. l, of amodifled form; and

Pig. 5 is a'view on the line 5-5 of Fig. 4. In the reduction of material, such, for example, as rock, it has, been round practically impossible go to prevent the escape from the mill of a substantial percentage of the product which is not brought to the desired fineness. In consequence of this difllculty in securing desirable uniformity, of. product, it becomes necessary to either so ad- .iust the mill that much ofthe material passing through it will be'redueed beyond the gauge required, or a subsequent screening operation must be performed. By means of the apparatus formin: the subject of this invention any oversize partlcles of the product will be separated out as the material is discharged from the reducing chamber and-returned thereto, to be again operated uponbythemill. a

A reducing mill is conventionally shown at I,

and may be of any desired form or type, it being assumed, however, that an air blast is used in connection with the mill for effecting the discharge of its Product. 'The'association ofa blower with reducing mills being common, it is ll, iorreceiving the coarser material which has been separated out for further reduction, and an outlet "for the reduced material.

' The material discharged from the mill at i2 is delivered to the separating device, generally shown at It, and which, as illustrated, consists of a tube in 100;) form. This tube is,--at least through a portion of its length, V-shape in cross- 50 section, as shown at ll, tlie apex ii of the y be-'- .-apertured lugs,

the outer ends of its arms, and a flat plate I! seated against and bolted to these flanges. Beyond the joint. I! the tube takes the form of an integral, circular nipple 20, for attachmentto a conveying conduit. 5

Adjacent to the delivery end of the separator a lateral opening is provided in its outer contracted wall, as shown at 2|, this opening being preferably surrounded by an integral boss 22, through which a receiving tube 23 is entered. The 10 inner end of the tube 23 has a lateral opening 24, which is directed backwardly with reference to the direction of the flow of the material.

. Mounted upon the closed end of the tube 23 is a disc 25, secured to the tube by any suitable means, 15

such as a bolt 26, and preferably loosely held so complementary form so that all material caught by the deflector will be directed into-the lateral 20 opening of thetube. The aperture 2| extends upwardly within the walls of the V-shaped passage of the separating conduit, gradually dying out, as plainly indicated in Fig. l, and hence the disc 25 entirely crosses the ,conduit passage whatever g5 may be the adjusted position of the tube.

' The tube 23 is entered into the separating conduit through a gland 21, seated within a counterbore in the boss 22, suitable packing material 2! being introduced in advance of the gland. The m gland is mounted loosellupo'n a pair of threaded posts 29, which pass through lateral wings. as 34,

.and are set into the end of the boss 22, and is adjusted tosuitably compress the packing 28 .by means of nuts, as 30,'mounted on these posts. The 5 tube 23 .is in the form of a two-diameter nipple, its larger outer portion 3| being threaded for engagemen't by a nut 32, seated within the counterbore ofthe gland 21, and loosely held within that .seat by-meansof a clamping plate 33, interposed 40 between the nuts ,30 and the outer face of the gland. The, nut 32 is provided with peripheral apertures, as shown at 35, for engagementby a spanner wrench. The threaded end of the tube section -23 is provided with a pair of lateral as 36;which loosely iit upon the posts 29.

In assembling the parts just described the nut :2 be threaded upon the tube nipple a and seated within the gland and under the plate 25. The gland being new threaded upon the posts 29, the end of the nipple is carried forward withinfrom the joint It to the joint I1, is preferably the.aperture ofthe boss 22, and the nuts 3! are form'ed longitudinally of two sections, the outer '55 one being of V-shape and having flanges I! at turned up to properly seat the gland. The nut "reduced by the mill I0 is discharged therefrom through the outlet l2 into the separator l3 at such velocity that the centrifugal force, while not sufi'icient to mass the stream along the outer wall of the curved conduit, will cause the larger particles to follow, that wall because of their greater momentum, thereby causing them to be deflected by the plate 25 into the tube 23, by I which they are returned to the mill and subjected to a second reducing operation. The finer material will escape the deflector 25 and pass on through its outlet 20. The separation of the finer from the coarser particles will be due, in part, to the V-shaped cross-sectional form of the conduit, the stream of coarser material monopolizingthe apex of the V, to the exclusion of the finer material, should the centrifugal force exerted upon the latter urge it tangentially. The nipple 23 is readily adjusted to correspond with the action of the mill.

If the milling operation is such that the material is uniformly reduced, the aperture 2! may be entirely closed oiI. If, because of the character of the material or the condition of the mill, the reducing operation is not uniform, the nipple 23 may be adjusted to insure the return of all of the oversize particles for a second operation thereon.

The separator may, if desired, be round, as shown in Figs. 4 and 5, or may take other crosssectional forms."

In the modification shown the boss 31, corresponding with the boss 22, is of suflicient size to permit the use of a nipple 39 for the discharge one-half of its diameter. The nipple may be secured; as in the case of thenipple 23, and there will be provided a deflector for diverting the trapped material into aside opening of the nipple, as in the other form. The form of separator last described will be of special value in the elimination of fine material from gravel, or the like, and when used for that purpose the nipple 39 will trap the material desired for use, permitting the dust to pass on to be discharged onto a dump, or into a suitable receptacle.

Where the operation to be performed is the separation out of the dust or flne sand which frequently is mixed with gravel, and also in operating on other materials, water may be used as the carrier instead of air, and in the drawings there is shown a pump 4| for conveying the material to and forcing it through the separator. 5

The invention may be advantageously used in separating ore from gangue, and the form of the embodiment employed will vary with the service desired. The deflector 25 is circular and rotatable, and is made of hardened material to in- 10 crease its durability.

I claim as my invention 1. In a separator, a curved tube having a V- shaped section, the contracted portion being outward with reference to the curvature and having 15 a lateral outlet at the apex of the V-shaped section, a boss surrounding the outlet, a discharge tube projecting through the boss and having a closure for its inner end and a lateral opening adjacent thereto, and means for adjustably secur- 20 ing the tube to the boss.

2. A separator comprising a curved tube having an outlet opening in its outer wall, a counterbored boss surrounding the opening, a gland fitting within the counterbore, a pair of posts 25 projecting from the boss, a discharge tube projecting into the curved tube through the gland and being laterally open at its inner end and being exteriorly threaded, a pair of posts projecting from the gland and engaging the dis- 30 charge tube to prevent its turning, and a nut rotatably carried by the gland and engaging the threads of the discharge tube.

' 3. A separator comprising a curved tube having an outlet opening in its outer wall, a counter- 35 bored boss surrounding the opening, a gland fitting within the counterbore, screw means for adjustably securing the gland' within the counterbore, a discharge tube projecting into the curved tube through the gland and being laterally open 10 at its inner end and being exteriorly threaded, a post'projecting from the gland and engaging the tube to prevent its turning, and a nut rotatably carried by the gland and engaging the threads of the discharge tube.

4. A separator comprising a curved tube having an outlet opening in its outer wall, a counterbored boss surrounding the opening, a gland fitting within the counterbore, screw means for adjustably securingthe gland within the coun- 50 terbore, a discharge tube projecting into the curved tube through the gland and being laterally open at its inner end and being exterlorly threaded, means for preventing relative turning movement of the tube and gland, and a nut ro- 55 tatably carried by the gland and engaging the threads of the discharge tube.

' ALFRED J. MosLEY.

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