US1936120A - Method and apparatus for spraying thick liquids - Google Patents

Description

METHOD AND APPARATUS FORSPRAYING THICK LIQUIDS;

Filed A ril 16, 1951 4 Shee -Sheet 1 x I In venior U A llorney No v. 21; 1933. H; H W T 1,936,120

METHOD AND APPARATUS FOR SPRAYING THICK LIQUIDS Filed April 16, 1931 4 Sheets-Sheet 2 QByQM a s A llorney Nov. .21, 1933.

H. H.-SCHMIDT 71,936,120 METHOD AND APPARATUS FOR SPRAYING THICK LIQUIDS Filed April is, 1951 4 Sheets-Sheet 5 Inventor Ebwmmdz:

A llomey Nov. 21, 1933'.- r H. @H. SCHMIDT 1,936,120 METHOD AND APPARATUS FOR SPRAYING THICK LIQUIDS Filed. April 16, 1931 4 Sheets-sheaf. 4

I Invenior A tlorney Patented Now-21,1933

' ME'rnon AND,

1,936,126 APPARATUS son smrma THICK LIQUIDS Hermann H. Schmidt, Hanover, Kane assignor to Missouri Holding and Investment Company,

' St. Joseph, Mo.

' application April 16, 1931. Serial No; 530,669

90laims.

This invention relates generally to. a method, and to a means or apparatus for doing away with the preheating of thick liquids to render them in condition to be sprayed, and particularly to an apparatus for conditioning molasses and the like heavy thick fluids or powders soas to permit the spraying thereof in such operations as the treatment of feeds and the like.

It is an object of this invention to provide a 0 simple and inexpensive and highly efiicient and reliable apparatus of the type described wherein centrifugal force is applied to quantities of the molasses or other thick fluids or liquids or powdered materials, whereby to eject the. liquid or fluid or powder from a casing in which the centrifugal force is acting upon the fluid or powder, for spraying the fluid or powder therefrom for mixing with other substances.

It is also an object of this invention to provide a structure of this type which is adapted to be generally associated with standard mixing devices for feeds and the like, whereby to simplify the operation of mixing the mentioned fluids or powders with the feed materials or the like where.- by the operation is rendered more efflcient and expeditious, and can be carried on more simply and at greatly less expense.

These and other objects .of the invention, its nature, and its composition and arrangement and combination, of parts and the process involved will be readily understood by anyone acquainted with the art to which this invention relates upon consulting the following descriptions and the drawings, in whichz- Figure 1 is a general side elevational view of an application of my invention particularly useful in spraying-feed and the like with molasses.

Figure-2 is a top plan view of Figure-"1.,

Figure 3 is an end elevational view partly in cross section of the centrifugal element of my apparatus.

Figure 4 isa side elevational view of one of the centrifugal elements.

Figure 5 is a sideelevational view 'of the cent5 trifugal agitator element.

Figure 6 is a horizontal sectional-view through the main supply pipe disclosing the construction and disposition of a slide valve therein.

, Referring in detail to the drawings, the numer- 'al 5 designates generally a trough of any suitable type in which and upon whose bottom moves a conveyor 6 supported at the ends of a horizontal frame 7 by means of rollers 8 and 9. The roller 8 is idle and the roller 19 is driven by means ofa 5 drive sprocket chain 10 in turn connected with a relationship, so as to coordinate mixer 11 supported at the same end of the frame 7. V

The frame 7 is supported on a braced tripod structure generallydesignated 12, by means of brackets 13 attached to the legs 14 of theframe 50 structure 12. At theapex of each side member of the structure 12 and iournaled transversely across and vertically spaced from the trough 5 is a shaft 15 having a sprocket chain operative co nection with a large sprocket "wheel 17 rotatably supported on a shaft which is journaled across the structure 12 below the trough 5 and below the lower flight of. the conveyor 6. The sprocket wheel '17 is driven by means of an associated sprocket wheel 18 which is smaller than the sprocket wheel 17, the sprocket wheel 18 having a sprocket chain operative connection 19 with another sprocket wheel 20 which is mounted inwardly of the sprocket 21 on a shaft 22 journaled transversely of the e d of the frame inwardly of the mixer 11, w th which the sprocket wheel 21 is operatively connected as stated, by the sprocket chain connection 10.

The relative size and relation of the sprocket .wheels is so adjusted as to rotate the various shafts at predetermined speeds in a definite the movements of the mixer 11, the speed 'of the conveyor 6 and the speed of the centrifugal elements to be described.

Supported'within the side members of the structure 12 onthe shaft 15, but not rotatable therewith; is a pair of centrifugal element cas ings generally designated 23. These consist ofshallow circular casings mounted centrally onthe shaft 15 by means of bearing sleeves 24 and packing glands 25. The circular casings are com-- posed of convexed disks 26 and 27, the convex disk 27 having an inturned flange 28 to the inside of'which the edge of the disk 26 is secured by means of rivets or bolts or the like as indicated at 29. Angularly disposed above the sleeves24 and angularly directed upwardly on opposite sides of the casing 23 is an oppositely disposed nipple 30 communicating as closely as possible to the centers of the casings. A pair of pipes 31 of general U-shaped form having the lowerle'gs thereof angularly deflected from the vertical as indicated at 32, connects said angularly disposed leg portions with the nipples to, and the horizontal portions 33 of the pipes 31 are connected at opposite ends of a T-fltting 34 which has its vertical nipple 35 communicated with a valved supply pipe 36 having the hand operated slide valve structure 3'7. The molasses or' other heavy IEO fluid or powder is supplied through the pipe 36 and the ingress thereof to the centrifugal elements is controlled by the slide valve structure 37, the said ingress causing fluid or powder to be equally and evenly projected into the casings 23 as closely as possible to the center thereof.

Within each casing 23 and secured to rotate with the shaft 15 are hubs 38 carrying the blades 39. As observed in Figures 3 and 5, the blades are equally circumferentially spaced and have a clearance as indicated at 40 with the casing 23, the outward edges of the blade 39 being curved to conform with the convex contour of the dislzs of which the said casings are formed. Every other blade is disposed on an opposite side of a plane through the center of the hub as shown in Figure 3. It is necessary to rotate the shaft 15 and consequently the blades 39 at a high rate of speed, and coordinated with the movement of the conveyor and other elements of the device.

It is particularly to be observed in Figure 4 that the disk 27 of the casing 23 is downwardly and tangentially offset as at 41 to provide a pocket or recess for backing up the fluid or powder as it is centrifugally hurled against the periphery of the casings under the influence of the rotary agitator blades 39. The physical phenomena resulting from the action of the agitator and the formation at 41 are taken advantage oi to the extent that the heavy liquid or. powder will be thereby sprayed through holes 42 arranged peripherally on each side of the lower edge of the disk 2'7 and the flange 28 thereof, on each side of a slot 43, The impelled liquid or powder is forced through the holes 42 and through the.

slot 43 at high velocity, whereby the humid or powder is disintegrated into streams and sprays ciently broken up to enable the efficient mixing and spraying of the material with such as feeds which are passed under the centrifugal elements on the conveyor 6. It is also my intention to include in invention a screw type or other type conveyor instead oi' the type illustrated in the drawings, the treat-,

ment of the material being in either case equally facilitated. A plurality of the centrifugal ele--' ments, and a plurality of conveyors may be provided in'batteries to any practical limit in numbers. In addition, any suitable loading or conveyor structure or system may be associated with the device of my invention whereby to facilitate the delivery of materialto the device, and the device itself may be power or manually operated, the molasses or other thick liquid or powder supplied to the centrifugal elements by gravity or by means of a pump system.

A suggested ratio of speed for the different elements of my invention calls for a speed of the drum 11 of four times faster than the relative travel of the conveyor, and a practical speed of rotation 01' the centrifugal elements approximates i880 revolutions perminute, this speed of the centrifugal elements havin proved in one form of the invention a practicalspeed for obtaining a desired spraying eflect.

As already stated, the principal object of my invention is to provide a cold, that is, a nonheated means and method whereby. heavy viscous liquids such as molasses and/or powders may be conditioned so that; it is possible to spray them as efllciently as lighter liquids, and mix such heavy liquids with other materials in spray form, and the above illustration of one form of my invention is set out only to give practical form to the presentation of my invention and to properly disclose the same. For instance, the form of the centrifugal impeller rotor and its blades might be varied in different ways, as might the casings 23 and the precise arrangement of the fluid supply thereto. In the form shown, the direction of rotation of the rotor or impeller blades is in the direction of the arrows in Figure 5, the blades 39 being arranged tangentially with respect to the hubs 38. s

It is to be definitely understood that I no not g5 desire to limit the application of this invention to the'particular modification set out herein to illustrate the principles thereof, and any change or changes may be made in material, arrange ment and combination of parts consistent with the spirit and scope of the invention.

What is claimed is:

i. A mixer and a sprayer device for heavy viscous fluids and powders as described comprising a circular casing having at its lower edge a tangentially offset perforated portion constituting a spray head adapted to be positioned adjacent the material to be sprayed, a bladed rotor in the easing, and angularly disposed inlets on each side of said casing for conveying the heavy viscous fluid and/or powder to the central point of the casing, and branches on a supply pipe connected to said inlets, and means for rotating said rotor to impart rotary motion to the material in the casing for projecting the material into said offset spray head and ejecting-it through the perforations thereof.

2. A mixer and sprayer device for heavy viscous fluids and powders as described comprising a circular casing having at its lower edge a tangentially offset perforated portion constituting a spray head adapted to be positioned adjacent the material to be sprayed, a bladed rotor in the easing, and angularly disposed inlets on each side of said casing for conveying the heavy viscous fluid 5 and/or powder to the central point of the casing, and branches of a supply pipe connected to said inlets, and means for rotating said rotor to im partrotary motion to the material in the casing for projecting it into said oflset spray head and 2g ejecting it through the perforations thereof, and coordinated means for moving a quantity of material to be sprayed into position under said spray head.

3. A centrifugal mixer and sprayer for heavy viscous fluids and powders of the type described comprising in combination, a trough, a conveyor in the trough, a frame for the trough and the conveyor, a vertical support for the frame and a centrifugal mixing and spraying device disposed 1 over the conveyor for spraying material carried by the conveyor.

4. A centrifugal mixer and sprayer for heavy viscous fluids and powders of the type described comprising, in combination, a trough, a conveyor 1135 in the trough, a frame for the trough and the conveyor, avertical 'support for the frame, a centrifugal mixing and spraying device disposed over the conveyor for the material carriedby the conveyor, said mixing and spraying device com- 1 d prising a circular casing having its lower portion offset tangentially and provided at each side with spray holes and centrally with a spray slot, centrally disposed fluid and powder inlets in each side of the casing connected to a pipe supp and a rotor in said casing having tangentially arranged staggered blades.

in the trough, a frame for the trough and the conveyor, a vertical support for the frame and a centrifugal mixing and spraying device disposed over the conveyor for spraying material carried by the conveyor, said mixing and spraying device comprising a circular casing having its lower portion offset tangentially and provided at each side with spray holes and centrally with a spray slot, centrally disposed inlets on each side of the casing connected to a supply pipe, and a rotor in said casing having tangentially arranged staggered blades, said casing having convex concave sides, and said blades having their outward edges curved to conform with the concave contour of the inward face of the sides of the casing.

6. A device for and reducing-the viscosity of heavy ordinarily unsprayable viscous fluids and spraying the same, comprising a casing, heavy fluid inlet means for conveying heavy viscous fluid into a central portion of the casing, supply means for the inletmeans, bladed rotor means in the casing for whirling the heavy viscous fluids for impartingcentrifuga-l force there-. to and for decreasing the viscosity thereof, offset spray means on the lower part of the casing which may be located adjacent the material upon which the fluid is to be sprayed, said spray means being provided with small openings through which the mixed fluid of reduced viscosity is sprayed by reason of its centrifugal force. I

7. A device for mixing and spraying heavy viscous fluids and powders without the use of heat comprising a casing, rotary means within the casing for breaking up and imparting greater fluidity to the heavy viscous fluids and powders by converting them into the: form of mist and spray and imparting centrifugal force thereto,

common inlet means for said fluids and powders,

control means for controlling the amount of fluids and powders introduced into the casing, common outlet means for releasing the mist and spray from the casing upon the material to be sprayed.

8; A device for mixing and spraying heavy viscous fluids and powders without the use of heat comprising a casing, rotary means within the casing for breaking up and imparting greater fluidity to the heavy viscous fluids and powders by converting them into the form of mist and spray and imparting centrifugalforce thereto, common inlet means for said fluids and pow- -ders, control means for controlling the amount of fluids and powders introduced into the casing, common outlet means for releasing the mist and spray from the casing upon the material to be sprayed, an enclosedauger conveyor means for carrying the material into position to be sprayed, means for reducing lumps in the sprayed material and for discharging the reduced sprayed material, common power means for synchronously operating the rotary means, auger conveyor means, and reducing and discharging means, unitary frame means supporting all of the same in coacting, cooperative relationship.

9; Means for mixing and increasing the fluidity of and spraying mixtures of heavy viscous fluids and powders without the use of heat comprising a casing, fluid and powder inlet means on the casing, rotary means in the casing for mixing and reducing the fluids and powders to. the form of mist and spray and imparting centrifugal force thereto, and common outlet means on the casing for discharging the mist and spray upon material to be sprayed.

HERMANN H. SCHMIDT.

for assembling and 100

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