US1881186A - Intermediate carrier for sugar cane mills - Google Patents

Description

Oct. 4,. 1932. F. HEGr-:NBARTH 1,881,186

INTERMEDIATE CARRIER FOR SUGAR CANE MILLS Filed Sept. 22, 1950 2 Sheets-5h66?. `l

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INTERMEDIATE CARRIER FOR SUGAR CANE MILLS Filed Sept. 22. 1950 2 Sheets-Sheet 2 uml Snucntor Flgen/Zar@ Uvxw www Gttornel Patented Oct. 4, 1932 PATENT OFFICE FRANCIS HEGENBRTH, 0F NEWOBLEANS, LOUISIANA iNrERMRDrATE CARRIER FOR SUGAR CANE MILLS y lApplication led September 22, 1930. Serial No. 483,669.

Thepresent invention relates to improvements in intermediate carriers for sugarcane mills,`"and has for an object to provide an V improvedV intermediate carrier used pri- ;.marily for'the breaking up -of lumps of bagasse, in addition to advancing the bagasse blanket from one mill to another.

.Another object of the invention is to provide lan even distribution of the bagasse blanket laterally over the carrier bottom plate. Y. v-

A further object of the invention is to pro-r vide an improved device which will operate upon the bagasse coming from a cane mill i in such a manner as to churn andturn over the bagasse particles, exposing all surfaces in a mannery which permits of thorough maceration, whereby to secure the best pos-- sible penetration of the bagasse with the 2u macerating liquid.Y

With the foregoing andother objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims. appended heIetO. f

Inlthe drawings, wherein like symbols refer to like or corresponding parts throughout the several views, l

Figure 1 is a longitudinal vertical section taken through an apparatus constructed according to thepresent invention. l Figure 2 is a fragmentary horizontal section taken through the same.

Figure 3 is a view similar'l to Figure 1 but showing a modified form. r

Referring more particularly to the drawings, the iirst mill and thesecond mill are so designated by legends on the drawings and these mills are of the usual form.

The first mill is provided with a cane roll 5, a bagasse roll 6 and atop roll 7. The crushed cane is forced into the throat 8, be-

ing discharged from the first mill and pushed upwardly over the bottom plate 9. Upon i114.5 reaching the apeX 10, the compact mat of bagasse breaks up and drops onto bottom plate 11 of the carrier mid-section. In this carrier mid-section are a number of rotating helical conveyors 12 and 13. These conveyors act to 50 thoroughly loosen and disintegrate the bagasse lumps which are still intact. Maceray i tion is applied at this point to best advantage, since the bagasse is turned over and all surfaces exposed to the maceration fluid.

The maceration fluid pipe is shown at 14 and is provided with nozzles 15. An additional pipe 16 for steam or liquid may be located inthe angle between the ledge or apex 10 of the bottom plate 9 and the forward inclined section 17 of the front wall 18 of the carrier mid-section. The screw conveyors 12 and 13 are provided with stub shafts 19 at their forward ends only. These stub shafts pass through the front walls 18 of the carrier section and are mounted for rotation in bearings 20.

, The screw conveyors consequently resemble cork screws in general appearance. The shaft is omitted' on the greater part of the screws to avoid entangling long pieces of cane that occasionally pass with the bagasse. The screws may be rotated by chain drive or otherwise. In this instance, bevel gears 21 are provided upon the stub shafts 19 meshing with similar bevel gears 22 on a shaft 21 that is driven by a chain 23 and sprocket connections from the ack shaft 24, which in turn is driven by chainand sprocket connections 25 from the first mill. The rotation of the screw members 12 and 13 will push the bagasse blanket between the rolls of the second mill, thus producing a force feed effect.

Slip joints 26 and 27 make it possible to readily lift out the entire mid-section 28. The side plates of the mid-section are provided with lifting holes or shackles 29. Filler pieces 30 are placed in the bottom part of the mid-section adjacent the lower portions and sidesof the screws 12 and 13 to prevent accumulation of bagasse or trash where the rotation of the screw would not remove such matter. y The screws or screw flights 12 and 13 will beplaced in the bottom part of the mid-section parallel to one another and in such numbers as the carrier width may require. One flight of screw may be sufficient for a very narrow intercarrier. For a standard intercarrier, sayG inches wides, four 10 inch di ameter screws or flights would probably suf-Y 555 fore,-referring to mills l and 2, Il Order t0 l'ice. These iights or screws could be made relatively short to provide the pushing power for the blanket which will mat readily again after leaving the screw flights. l

However, the natureV and condition of the bagasse, andthe distance between first and second mill will determine the length of th-e screw flights.Y

The construction readily permits the addition of a plate or sheet covering 31 for fully enclosing the carrier, should it be deemed preferable to apply steam to the bagasse blanket. Where a number of the screws or flights 12 and 13 are employed they will pref-- erably be madel alternately right and left hand, as shown in` Figurev 2. This will pre-v vent an uneven distribution of the bagasse blanket laterally over the carrier bottom y the rolls of the second mill.

plate.

f Y As shown more particularly in Figure 3, a slightly modified form of arrangement is shown, where an inclined mid-section is employed. The inclined bottom plate32has an apex 33 in its central portion. This inclined carrier pushesthe bagasse blanket upward towardtheapex point 33 from where it is fed by gravity over the bottom plate 34 between It will be appreciated that with the use of the inventionno :carrier drag chain, apronchain or slats are employed, which parts are subject to" rapid wear andV frequent breakage. With the present invention the bagasse mat is thoroughly broken up andmaceration applied most effectively with all particles of bagasseexposed to maceration.

l/Vith the invention, there is an extremely effective force feed into the mill; and there results absolute cleanliness with no trash under carrier and between the mills. For these reasons, the'invention eliminates inversion Y lossesand reduces labor. Y

. carrieraiseasilyremovable. All moving parts. 45.j

v The main section or vthe mid-section of the are in this mid-section' and thus may be readily accessible. The entireinter-carrier may be fully enclosed for the steaming of bagasse if desired. y f 1 Easy access is had to all parts of the intercarrier and to the mill rolls under carrier during operation. I f i Throughout the specifications, reference is Vmade to mills l and 2. Modern mill trains consistof 3 to 6 and 7 mills. When, there# overlapping ofthe screw flights. In such a case, it will be preferable to useonly screw v iiights of the samevhand and a certain syn- Chronism of rotation must be established to adjacent the first ltively'close to thel second mill, screw conveyor It is obvious that various changes and modications may be made in the details of construction and design of the above specifically described embodiment of this invention lwithout departing fromrthe spirit thereof, such changes and modificationsl beingv restricted only by the scope of the following claims:

What is claimed is 1 v 1. In ra sugar cane mill, a wide intermediate carrier section between two mills, having a bottom plate, a numberof screw flights having stub shafts at one end only mounted across the bottom plateY in an intermediate portion of the carrier, and means for rotating said screw flights. f

2. In a sugarcane mill,'an open intermediate carrier sectionhaving al bottom plate with a forward walll -adjacent the point of inlet of the material, a number of 'screw flights mounted along the bottom plateoandhavin'g stub shafts at one end only extendingthrough screw iiights. Y.

3. InV a sugar cane mill, an intermediate carrier having a bottom plate with a forward inclined fwall, an entrance throat from one mill having an apex point extending over said forward wall, a, number vof screw flights extending alongsaid `bottom plate with their forward` ends adjacent the forward wall, lillers in the corner portions of said bottom and forward walls below the iights, stub shafts on the forward ends -of the V'screw iights only extending through said forward wall,bear ings Vexternally of lsaidforvvard wall for the stub shafts, and means connected kwith the forward ends .of the stub shafts for driving the forward wall, and means for rotating said sai-d flights. 'l l v Y l-In a sugar cane mill having a first mill Y and a'second mill, an Vintermediate carrier section having an opentop Vdisposed vbetween the mills, anV inclined bottom'wall forjthe intermediate carrier extending from a lowpoint mill to a high point relaflights extending parallel to, and in the lowest portion of, said bottom wallwhereby to' form an open blanket of material, and means substantially above said conveyor flights for spraying macerationy liquidY upon the" open blanket.

Y FRANCIS HEGENBARTI-I.

l Eno

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