US1422737A - Strainer for sugar juices - Google Patents

Description

M. E. CARTER.

ST'RAINER FOR SUGARIJUICES.

APPUCATION FILED FB.7,1919. 1 232,737 Patented July 11, 1922.

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STRAINER FOR SUGAR JUICES.

APPLICATION FILED FEB-7.1919.

M. E. CARTER. STHAINER FOR SUGAR JUICES. APPLICATION FILED FEB. 7, 1919.

MARTIN E. CARTER, OF PHILADELPHIA, PENNSYLVANIA.

av ng. w r amu e tar s t. a an STRAINEB FOR Application filed February 7, 1919.

To all whom z'' may concern:

Be it known that I, MARTIN E. CARTER, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Strainers for Sugar Juices, of which the following is a specification.

My invention relates to liquid straining devices; and the object of my invention is to provide a revolving structure in which sugar juices may be strained. More particularly I have designed an improved structure for straining defecated sugar juices, although it will be understood that it may be employed for straining other liquids.

The structure forming the subject of my invention comprises a plurality of rotating screening elements or strainers, of foraminous or reticulated material of inverted-cone shape disposed within a suitable casing, from the bottom of which the strained juice is discharged; such strainers being mounted in vertical alignment upon a shaft which may be driven or rotated by suitable means. In the present instance, I propose to effect this rotation by a turbine structure, mounted at the upper end of the shaft, which will be driven by the entering juice, and such juice may be introduced under pressure or under a sufficient head, (about twelve (12) feet), to drive the shaft with the straining or screening elements at the desired speed.

My improved screens or strainers are made up of a series of sections comprising removable frames to which the reticulated or foraminous material is secured, and these frames are adapted to engage ribs secured at their upper ends to annular rings and at their lower ends to special forms of hubs carried by the central shaft and more particularly described hereinafter.

While I may employ any suitable number of straining elements, I have shown in the present instance three inverted-coneor funq nel-shaped elements, one above another; the lower straining structure being the largest, and these straining structures comprise successively finer straining mediums, from top to bottom. The upper screen may be of phosphor bronze cloth or gauze, having about sixty meshes to the square inch; the second screen may of phosphor bronze cloth or gauze, having about eighty (80) meshes to the square inch, while the lower screen may be of phosphor bronze cloth or Specification of Letters Patent.

SUGAR JUICES.

Serial No. 275,522.

gauze, having about one hundred and ten (110) meshes to the square inch. Other metallic material to form these screens may be employed if found desirable, and the mesh may be of such size as to properly perform the desired function.

These and other features of my invention are more fully described hereinafter, reference being had to the accompanying drawings, in which:

Figure 1, is a sectional elevation of an improved straining device made in accordance with my invention.

Fig. 2, is a partial plan view, partly in section on the line IIII, Fig. 1

Fig. 3, is a sectional plan View on the line IH III, Fig. 1, showing the upper strainer.

Fig. 4, is an enlarged sectional view of the central portion of the screening structure; showing the central shaft to which the screen supporting hubs are attached.

Figs. 5 and 6, are enlarged sectional views of one of the hubs to which the screen sections are secured. I

Fig. 7, is a plan view of one of the hubs showing one of the screen sections secured thereto.

Fig. 8, is a sectional plan view on the line VHL-VIII, Fig. 5.

Figs. 9 and 10, are sectional views illustrating one of the turbine buckets, taken on the line X-X, Fig. 2, and

Figs. 11 and 12, are sectional views illustrating details of my invention.

In the drawings, 1 represents a suitable casing within which the screens or straining elements may be contained. This casing may be provided with a ring 2 whereby it may be supported by floor beams 3, or other means, and if desired the top of the structure may be braced or stayed by a suitable ring l, and entirely covered by a top or cover 5.

Centrally disposed with respect to the easing and the screens is a shaft 6, which may have a ball bearing support 7 suitably mounted at the upper end of the structure, and a step bearing 8, with an interposed ball race 8, at the bottom of the casing. If desired, the lower bearing may have a special lubricating device comprising a cylinder 9 from which lubricant may be forced by a plunger 9 through a pipe 10 to the step bearing.

\Vithin the casing 1 are disposed a plurality of funnelor inverted-cone-shaped straining or screening elements 11, 12 and 13, made up of suitable foraminous or reticulated material, which may be perforated plates, or sheets of wire gauze, 11, 12 and 13, carried by removable frames 14, and these straining or screening elements are preferably progressively finer from the upper structure to the lower structure.

Each of the strainer or screen structures includes a ring 17 at the top, to which ribs 18 may be secured; the lower ends of said ribs being connected to tubular hubmembers 19, 19 and 19', respectively, forming discharge outlets for said screens; each of said tubular outlet members including hubs 20, 20 or 2-0", respectively, whereby they may be secured to the shaft 6; and bracing arms or spokes 2'1 connecting the hubs 20, 20 and 20", with the tubular members 19, 19 and 19 respectively.

The tubular members 19, 19 and 19", are

provided with seats 22 for the ribs, which may be secured thereto by rivets or other fastening means 23. The sheets of foraminous or reticulated screening material 11, 12 and 13, are carried by the removable frames 14, above referred to, and these frames are adapted to enter grooves 24 at the sides of the ribs, which grooves may be formed by strips 25 attached to said ribs by suitable means as rivets 26; the tubular members preferably having flattened portions 27 between the ribs upon which the lower ends of the screen-carrying frames 14 may rest.

As shown in Figs. 1, at and 5, of my present construction, the hubs and the tubular members supporting the screens or strainer sections may be formed integrally with deflectors 28, disposed between said screens, whereby the juice passing through the tubular members will be deflected and properly distributed to the next lower screen.

These split collars or sleeves are disposed above and below the hubs, and in addition to their lnternal threads or annular grooves,

they are externally threaded at 35 for the reception of nuts 36 which serve to hold said split collars together, as well as binding upon the upper and lower ends of the hubs.

In lieu of providing the deflectors for the lower portion of the respective screens integral with the tubular discharge members 19, 19 or 19 thereof, or with the hubs 20, 20 or between the hub proper, indicated at 20, and

the lower split collar 31 and the nut 36 securing the same in place upon the shaft. In this form of structure, the hub may have a projection or lug 37, and that portion of the deflector 28 in engagement with the shaft may have a seat 38 receiving the same, or the relation of these cooperating elements may be reversed, if desired. This construction is designed to prevent rot-ative movement between the parts and to facilitate assembly of the same, and while it is more or less desirable it is not essential, and it is entirely within the scope of my invent-ion to omit means between the hub and the deflector designed to prevent rotative movement of the same with respect to each other when they are formed of independent parts.

At the upper portion of the structure, I provide a casing 40 to which the juice may be delivered from an inletopening 41. *Within a chamber 42 formed by this casing is a turbine structure secured to the shaft 6 whereby the entering juice may drive said shaft and the screening or straining elements carried thereby. This turbine structure may comprise a suitable plate 45, having a hub 47, secured to the shaft 6, and having a plurality of buckets or blades 48. The plate a5 is apertured at 49 directly adjacent each bucket or blade so that the juice may drop away from the plate as well as discharge from the outer edge of said plate against the wall of the casing 40. The juice enters the casing at an angle tangent to the buckets, and striking the same effects rotation of the shaft. A sectional view of one of the buckets is shown in Figs. 9 and 10; showing also one of the openings adjacent the buckets. Guiding or defleeting members 50 are preferably carried by the underside of the plate 415, and these may be inclined as shown in Fig. 9, or as shown in Fig. 10.

The casing 40 is preferably provided with a depending flange or guard 51, which may be curved and which may be secured at 52 to the top or cover 5; such guard insuring discharge of all the entering juice into the screen or strainer 11. Carried by the shaft 6, or the plate 45, directly below the turbine structure, is a conical deflector 53, which may screening action, and so on until it empties from the lower screen 19 into a receptacle 54, carried by the casing and having a pipe 55 leading therefrom through which all the dirt and separated matter removed from the juice discharges. This receptacle has a central raised portion 56 surrounding the shaft, and this may be protected or closed against ingress of juice delivered from the lower screen, by a conical deflector 57 disposed within said chamber and carried by a collar 58 secured to the shaft 6.. This deflector is preferably provided with a gland 59 and with packing to prevent the entrance of any juice. T he strained juice, from which the dirt and any other objectionable foreign matter has been removed, passes from the casing 1 through a suitable outlet such as indicated at 60.

Carried by the casing above the upper edge of the lower screening or straining element, I may provide a deflector pan 61 to insure that all juice entering the straining structure actually passes through the screens.

To prevent any strained juice passing into the discharge chamber formed by the receptacle 54 with which the outlet from the lower screen communicates, the tubular member 19 of the latter, which is slightly longer than those of the upper screening elements, as indicated at 62, may be provided with a deflector 63 whereby any juice following down the screen or ribs may be thrown outwardly into the lower part of the casing and away from the point of delivery of the dirt and filtered material; such deflector 63 overlying the receptacle 5 In order that the screens may be cleaned of any collected matter should such action ever become necessary, in lieu of removing the screen-sections, I may provide steam jets for the purpose. To this end, pipes 66 may be introduced at one side of the apparatus and be disposed directly adjacent the screens, at the same angle and parallel therewith. These pipes are suitably connected to a manifold pipe 67, in communication with a source of supply, and are perforated so as to be capable of delivering steam jets upon the screens as these are rotated so that solid material is dislodged and cleaning of the screens may be effected while the machine is in operation. The cleaning of the screens may go on while the juice is being strained, or it may be done after straining has been effected.

I preferably stay the several screens with respect to the shaft 6 by means of suitable rods 70, pivotally connected at 71 to a hub 80 and to the tubular members 19 and 19*, respectively, and at 72 to ears 73 secured to the ribs of the respective screens, whereby I am able to avoid all danger of the screens running out of true. These stay rods are preferably provided with turn-buckles 74: to permit adjustment with respect to the nor, as by threading, pinning, riveting, or

screen walls and shaft and secure proper alignment; thereby insuring proper operation of the screens.

The upper end of the shaft is provided with a suitable ball bearing support; forms of which are shown in Figs. 11 and 12. In Fig. 11, the upper end of the shaft is provided with a suit-able collar 75, which may be attached thereto in any approved man- 75 the like, and interposed between the same and a box 76 carried by the upper portion of the casing are a series of anti-friction balls 77.

In the arrangement shown in Fig. 12, the shaft is shown as'provided with a ring or collar 75, with a ball race 78 between which and another ball race 7 8 carried by the box 7 6, anti-friction balls 77 are provided. In this view, the box is shown as provided with a screw cap 79 closing an opening whereby lubricant may be introduced to the bearing; loose fibrous material being shown above the shaft to prevent ingress of dirt and dust.

I claim:

1. In a strainer for sugar juices and the like, the combination of a casing; a vertical shaft therein; a funnel-shaped straining screen carried by said shaft, means for in troducing juice to said screen, a depending flange extending within the upper zone of said screen, a deflector for the incoming juice tending to throw it toward said flange and into the upper portion of the screen, means for rotating the screen, and separate outlets leading from the bottom of the easing for the discharge of juice and the material strained therefrom.

2. The combination in a strainer for sugar juices and the like of a casing; a vertical shaft therein; a plurality of funnel shaped straining screens; hubs mounted on the shaft adjacent the bottoms of the screens respectively; tubular members rigidly attached to said hubs and to the bottom of the screens 110 respectively; conical deflectors also connected to the hubs and positioned to outwardly deflect juice passing through the tubular members; means for supplying juice to the topmost screen; an outlet conduit for ma- 115 terial delivered to the tubular member of the lowest screen; and a second outlet for discharging the strained juice from the casing.

3. In a strainer for sugar juices and the like, the combination of a casing; a vertical 120 shaft therein; a funnel shaped screening carried by said shaft; means for introducing juice to said screen including a rotating plate having buckets, against which the incoming juice strikes and formed with open- 12E; ings; deflectors below said openings; a depending flange extending within the upper part of said screen; a deflector for the incoming juice carried by the plate and positioned to deliver said juice into the upper 18% 'p'a'rtof the "screen, and separate outlets leading :from the bottom of the casing for the discharge of juice and the "material strained therefrom, respectively.

I 4;. In a strainer for sugar juices and the like, the combination of the'casing; a vertical shaft therein; a funnel shaped straining screen carried by said shaft; a depending flange extending Within the upper part of said'screen; rotating means operatively connected to the shaft for introducing juice to the said screen; a deflector forthe incoming juice extending outwardly to a position immediately adjacent the upper part of the screen, and 'to the lower edge of said flange; a tubular member carried by the shaft to which the lower part of the screen is secured; and separate outlets leading from the lower part of the structure for the discharge of juice, and thematerial strained therefrom.

MARTIN E. CARTER.

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