US2296564A - Colloid mill - Google Patents

Description

Sept. 22, 1942. H, MOREHOUSE 2,296,564

COLLOID MILL Filed Aug. 15, '1939' 17 20 56 5g" .76 I I k III I v g w Louie JET Moreizoase Slim/wan Patented Sept. 22, 1942 COLLOID MILL Louie H. Morehouse,

Los-Angeles, Calif., assignor to Glenn H. Morehouse, Los Angeles, Calif. Application August 15, 1939, Serial No. 290,231

2 Claims.

This invention relates to improvement in colloid mills for reducing solids suspended in liquids to finely divided form, as for example, the pigments of paints and the like or for the grinding of matter to form pastes and emulsions, as in the manufacture of mustard, etc.

An object of the invention is to provide in a colloid mill such as described an improved mounting for the rotor and stator grinders, by means of which said grinders may be quickly and easily removed and replaced.

Another object of this invention is to provide in a colloid mill such as described, an improved drive shaft mounting and adjusting means for the rotor grinder of the mill, whereby the number of parts usually required is reduced, the structure is more rugged, adjustments are more readily effected, and a more accurate milling operation is made possible with and parts replacement.

I A further object is to provide in a mill such as described an improved liquid sealing means for protecting the main bearing from damage by fumes and vapors arising in the mill during treating of certain materials.

Another object is to provide a colloid mill which will be superior to such mills as heretofore used by reason of the particular construction and relative arrangement and combination of the parts and elements thereof, and to' the end that the fewer parts are used, a greater variety of milling operations may-be carried out, and a greater nicety of adjustment and operation of the mill is afforded.

. with the foregoing objects in view, together with such other objects and advantages as may subsequently appear, the invention is carried into a. minimum of wear tion includes, as shown in the accompanying drawing, a hollow or generally tubular pedestal A suitably water jacketed and provided at its upper end with a head B removably bolted thereto and forming therewith a grinding chamber C, contiguous with which is a spillway D likewise formed as a part of the pedestal.

- Matter to be an intake opening E in the head B, to the rotor and stator grinders R and S in the grinding v such matter upon being ground will pass between said grinders into the spillway and be discharged over the inclined bottom wall F thereof.

The stator grinder S is annular and detachably held against an annular seat 1 on the head B by means of a, retaining ring 8 secured by screws 9 to the head. This retaining ring surrounds the stator grinder and abuts the seat 1 while its outer periphery is engaged with the annular wall ll of the head. The wall I0 is relieved as at ID to permit of ready removal of the ring 8. A shoulder H on the inner periphery of the ring seats against an annular shoulder I! on the grinder whereby to retain the latter against its seat. By reason of this construction the stator grinder will not stick to the head or otherwise prove diflicult of removal when replacement, as is often necessary, is required.

effect as illustrated by way of example in the accompanying drawing, in which:

Fig. 1 is a vertical sectional view of a mill embodying my improvements;

Fig. 2 is a top plan view of the mill, on a reduced scale compared-to Fig. 1;

. Fig. 3 is a cross sectional view taken on line 3-1 of Fig. 1;

Fig. 4 is a perspective view of the feeding memher for eifecting and control the feed to the mill Fig. 5 is an enlarged fragmentary vertical section of the liquid seal for protecting the main bearing of the mill;

Fig. 6 is a fragmentary vertical section showing the manner of mounting and removing the stator grinder, when removed from its seat.

and illustrating such grinder as One form of colloid mill embodying my inven- When the screws 9 are withdrawn the grinder S and ring 8 are readily removable as a unit as shown in Fig. 6 and this is a noteworthy improvement in this art.

Referring now to the rotor grinder R as best shown in Figs. 1 and 3, such grinder is in the. form of circular disk having an annular beveled grinding face I 3 arranged to coast with the beveled face it on the stator grinder S. A plate l5 sup ports the grinder R and is keyed as at IS on s. rotary shaft l-l extending upwardly in-the pedestal as is customary in mills of this type, said shaft being driven by any suitablemeans, not shown. An annular band. l8 surrounds the plate I! and forms therewith a socket in which the rotor grinder R is fitted as shown in Figs. 1 and 5. This band has an inwardly extending annular flange l9 located intermediate its upper and lower edge; and secured against the under side of the plate I! by means of screws 20 as shown in Fig. 5. The shaft ll extends through the grinder R and has a nut 2| threaded on its upper end for forcing an annular clamp plate or washer 22' against said grinder whereby to secure such grinder for.

rotation with said shaft. It grinder R may be from the shaft and -bearing 38 for the shaft IT.

The skirt of the bank l8 reason of the construction and arrangement of the nut 2|, washer 22, band 18 and screws 20.

The shaft l1 comprises an upper vertically adjustable section Ila. and a lower section I'Ib' splined by means of a sleeve '23 and the usual keyway 24, and key as shown in Fig. 1. This 'as to extend above and below-said shell and its lower end is externally threaded as at 29 for formed integrally with the force such matter into contact with the As a means for facilitating feed of matter between the grinders the stator grinder S is arfrom the disk and overlying cooperation with, the threads of the flange 21 whereby the sleeve 28 is, vertically adjustably supported inand by said shell. The upper end of the sleeve 28 is counterbored to receive a ball As the lower end of. the sleeve 28 extends below the shell 25 and access thereto may be 3| in the stand or pedestal A, said end is provided with openings 32 whereby the sleeve may be rotated and thereby vertically adjusted with a suitable spanner, not shown, and then locked in adjusted position by means of the lock nut 33. The upper section 11a of the shaft, the bearing and rotor grinder R. move with the sleeve 28 when the latter is vertically adjusted, for the purposes aforementioned. It-should be noted that the shell 26 is formed with a small internal flange 34 at its upper end which engages and centers the sleeve '28, said sleeve being otherwise circumferentialiy spaced from said shell except where threaded thereto at its lower end.

It is now seen that the shaft I1 and rotor grinder R are supportedfor vertical adjustment by a simpleand'rug'ged mounting consisting of f the shell 26 and sleeve 28 and comprising fewer parts than heretofore used in the art.

As a means for protecting the bearing 30 from damage by fumes and vapors arising from the material being treated in the mill, an especially constructed oil seal is provided. This sealing means includes, as best shown in Fig. 5, an annular well 36, suspended by an annular flange 81 thereof within the counterbore at the upper end of the sleeve 28, said well being circumferentially spaced from the shaft and supported on top of the bearing 30. The well is filled with oil and a sealing cylinder 38 carried by the plate l5 extends into said well whereby'to form an ef-. fective seal. This cylinder is provided with a flange 38 secured by screws 39 to the plate l5. extends below the upper end ofwell36 and acts as a baflle or guard to prevent solids and liquids from being thrown or deposited in the well.

-As a means for controlling the feed of matter 'to the mill and for effecting a positive feed of such matter between the grinders, I provide a. bladed circular feed disk '40 which is clamped on the upper end of the shaft I1 by the nut 21 so as to rotate with said shaft. The blades 4! of this disk are bent as in a fan to feed the matter between the grinders as will be apparent in Fig. 1;

I said disk being positioned'adjacent and substantially equal in area to .the inner end of the intake opening leading into the grinding chamber. Due to its size and position the disk 48 willregulate the feed of matter to the grinders as well as had through a hand hole I ranged with the upper portion of the beveled face it of its inner periphery extended above the face of the central portion of the rotor grinder R to such extent as to surround the outer margin of I the feed disk 40: the upper margin of the face [4 being positioned in close proximity to the tips of the blades 4| face leading outwardly and downwardly away the beveled face l3 of the grinder Rand abutting the face 13 intermediate the margins thereof. To further enhance the action of the feed disk M) the upper marginal portion of the face I3 is inclined away from the contiguous portionof the face It to form a channel 130. converging. downwardly from the tips of the blades. on the feed disk to a narrow'line of contiguous surfaces of the grinders S and R.

It will now be apparent that a colloid mill constructed and arranged as bereinbefore described formation and arrangement as come and as shown in the accompanying drawing, will provide for -the objects herein stated in a particularly eflicacious manner, due to the simplicity of construction and arrangement of the parts and elements thereof,

partsand the the use of comparatively few. mounting and adjusting means for the grinders as well as the-bearing and the liquid seal protection means for the bearing,

While'I have shown and described a specific embodiment of my invention, I do not limit myself to the exact details of construction set forth,-

and the invention embraces such changes, modiflcations and equivalents of the parts and their within the purview of the appended claims. i

I claim: I 1. In a colloid mill, a pedestal having'a grinding chamber provided with an intake opening, an

annular stator grinder mounted on saidchamher and surrounding the inner end of said open- I the plane of the disc to feed matter from said.

opening to said grinders, said disc being disposed in the opening or bore of said annular grinder and above the coacting grinding portions of said grinders.

2. In a colloid mill, a rotary grinder having a beveled outer peripheral face, and an annular stator grinder having a beveled inner peripheral face arranged with the upper marginal portion of said inner face protruding above the upper margin of the beveled outer face of the rotary grinder and with its lower margin overlying only an in termediate portion of said beveled outer face; said beveled outer face being inclined at its upper portionyinwardly .away from the intermediate and upper portion of the beveled inner face of said stator grinder, a flat feed disc mounted on said rotary, grinder and having 'blades arranged radially and circumferentially about the periphery of the disc with their fiat portions positioned in the direction of rotation but arranged, at a slight inclination relative to the plane of the disc.

. LOUIE H. MOREHOUSE.

of the disk withjthe beveled of V-shaped .cross section advantages, purposes and

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