US2585719A

US2585719A - Liquid solid separator

Info

Publication number: US2585719A
Application number: US720045A
Authority: US
Inventors: Grove D Alvord
Original assignee: Syntron Co
Current assignee: Syntron Co
Priority date: 1947-01-03
Filing date: 1947-01-03
Publication date: 1952-02-12
Anticipated expiration: 1969-02-12

Description

Feb. 12, 1952 G. D. ALVORD 2,585,719

LIQUID SOLID SEPARATOR Filed Jan. :5. 1947 2 SHEETS-SHEET 1 v INVENTOR.

Feb. 12, 1952 ALVORD 2,585,719

' LIQUID SOLID SEPARATOR Filed Jan. 5. 1947 l J 2 SHEETSSHEET 2 INVENTOR.

g a aazzmc Patented Feb. 12, 1952 Grove D. Alvord, Indiana, Pa.,--'assign'or to Syntron Company, Homer City, Pa, a "corporation of Delaware Application January 3, 1947, Sc'r'ial No. 720,045

3 Claims. (01. 210-449 This invention relates generally to a method and apparatus for separating liquids and solids such as dewatering material, fragile materials including fruits and vegetables, gravel, coal and other similar materials, and more particularly directed to themethod and apparatus for separating liquids from solids'as themixture is conveyed from -'one position to another.

"Iheprin'cipal -object "of this invention is the method "and apparatus for dewatering materials at the time that they are conveyed from one positiontoa'nother.

,Another object of this invention is the "pro vision of *a method and apparatus for separating liquids and solids while conveying the latter.

Anotherob'iect i's 'theprovision of a feeder-cohveyor arran ed to precipitate a liquid from a solid as the latter is being conveyed.

Other objects and advantages appear hereinafter "in the following description and claims.

A practical embodiment illustrating "the principles of this invention is shown in the accompanying drawing wherein:

'Fig. 1 isa viewin side-eleva'tion of a conveyor arranged for dewatering material.

'Fig. 2 is a top plan view of the conveyor illustratedfin Fig. '1. A

"Figffifi's an end elevation of the conveyor illustr'ated in Fig. '1. Fig.4 is aside-elevation 'of a conveyor arranged to separate "a liquid from a solid, a solid being conveyed in one direction and the liquid being discharged in the opposite direction.

Referring to Figs. 1 to 3 of the drawings, the conveyor 1'8 "consists of the vibratory motor "H and the conveyor trough 82. The vibratory motor I l contains an electromagnetic field member 9 within the heavy 'motor casting 13. The sides of the casting I3 are provided with the slots 14 'for receiving the ends of a 'series of leaf springs I5 which are secured at their ends to the base casting l3 by the T-shaped clamping bar l6 fastened by means of the bolts H. The armature iii of the vibratory motor is secured to the intermediate portion of the leaf springs 45 and is held in spaced relation with the electromagnetic field member 9 to provide a magnetic coupling therebetween. A pair of spaced rigid triangular plate members 28 and 2! aresecured at one end to the armature member H3. The lower edges of the plate member 25 and 2! are provided with the inturned reinforcing flanges 22. The upper edges of the plate members 2%! and 2i are provided with the outwardly projecting flanges 27:3 which are welded crotherwise secured to the undersideof the floor 2-4 of the conveying trough =12. With this structure a lineal vibratory motion of the armature is transmitted to the conveyor at 2 an angle of approximately -20 whichprovides a Vibratory conveyin action thereto. The Side Walls 25 of the conve s-1g trough l2 are formed integral with the floor 24. The back end of the side walls and floor of the conveying trough are formed integral with the rear wall 26. This conveying trough must made of relatively heavy material so that it is incapable of vibrating save as a unit.

A wedge bar screen conveying surface '21 is mounted in the conveying trough intermediate the floor and the top of the walls. As shown each of these wedge bars are shaped to provide-a relatively wide top surface and a relatively narrow bottom edge as shown 3 and are preferably welded in spaced relation to the

cross members

28 and 29 which maintain the bars in fixed relation and provide a rigid conve ing noor surface. The ends of the

cross bars

28 and 29 are secured to the longtitudinal members 30 and 3-'| which in turn are secured to the-sides 25 of the trough by means of the -series of the bolts 32.

The front end of the plates 20 and Zl together with the floor and side walls of the trough l2 are welded or otherwise secured to the U-shape hanger member 33 which terminates atth'e underside of the outwardly projecting flanges -3'4 along the top of the side walls 25 of the conv'eyor trough. Angle brackets 35 are secured to the upper end of the hanger member 33 which are provided "with openings for receiving the hanger eye bolts 36. Resilient "means such as the coil springs 3 are positioned between the spring seats '38 and the angle brackets 35 and are held by "meansof the nuts'39 for the purpose of resiliently supporting the front end of the feeder conveyor. flh'e lower ends of the cables 31a are secured to the eye bolts 36 "for the purpose of suspending the front end of the conveyor trough from the ceiling. The rear end of the feeder conveyor is supported by a similar anglebracket 35 secured to the sides of the motor base member [3 and providedw'ith asiin'ilar resilient means for 'suspending the rear end ofthe feeder conveyor from the ceiling. I

It will be noted that the floor 24 of the conveyor trough l2 terminates short or the en :Qf the conveyor surface I"! as indicated at When suspending the vibr'atoryffeeder on the (fables S'lafthe 'rear end of the feeder is made slightly higher than the front end of the feeder so that liquids will now down the incline sloping conveyor "trough floor 24 and will be discharged from the end 40 and received by the collector 4| which directs the liquid to 'any suitable receptacle. If the floor 24 and the material conveying surface 21 are disposed parallel with one another it is necessary to hang the feeder con- 3 veyor with the rear end tilted higher than the front end to produce an incline plane that will cause the water to be discharged at the front of the conveyor trough. An angle of one or two degrees to the horizontal is sufficient to effect the flow of liquid to the front of the conveyor trough. If it is desirable to maintain the material conveying surface 21 in a horizontal position, then the longitudinal members 30 and 3| may be secured to the side walls 25 of the conveyor trough to provide a slope of fromone to two degrees relative to the floor '24 of the trough. With a structure of this character the suspension cables are adjusted to support the material conveying surface 21 in a horizontal plane and the floor 24 of the trough will then slope downwardly and forwardly at an angle from one to two degrees.

If it is desired to remove the liquid from the conveyor trough at the back end the rear wall 42 of the conveyor trough may be provided with an opening 43 arranged to discharge the liquid into the chute 44 which may be directed to any suitable container. In this instance the conveyor trough is supported with its front end slightly higher to permit the water to flow back along the floor 24 and be discharged into the chute 44 whereas the material is fed along the conveying surface 21 to the frontof the conveyor trough. If the conveyor surface 21 and floor 24 of the conveyor trough are disposed at an angle to one another converging at the front end of the feeder, the feeder trough will of course be 1 supported to position the conveying surface 21 in a horizontal'plane and the liquid Will then travel rearwardly down the floor 24 of the trough to the chute 44. r

The conveying rate of the spaced wedge bar screen conveying surface 21 of solid particles is substantially the same as that obtainable by the use of a solid trough surface. The flowing motion transmitted to the material by the vibratory action of the conveyor causes the solid particles of material to move forwardly at a substantially uniform rate while inertia and gravity are effective on the liquid portion of the material causing it to flow vertically downwardly through the wedge bar screen conveying surface 21 to the bottom 24 of the conveyor trough. Owing to the fact thatthe wedge bar conveying surface 21 is substantially horizontal or disposed at'a small angle, the liquid will not flow along the upper and under surface of the bars but will drop to the trough floor 24. Thus as the conveyor feeds the material forwardly the liquid is caused to precipitate downwardly with no tendency to flow horizontally with the solid. l

Vibratory conveyors of the type shown when operated on 60 cycle alternating current will produce 3600 vibrations per minute which will rapidly draw the water from the material as it is conveyed over a relatively short distance on the conveying surface 21. With the vibratorymovement of the character provided by the angular disposed motor H, there is no splattering of the liquid in the air or relative to the solid as the latter flows along theconveyor-and the water flows down and along the bottom '24 to discharge.

A vibratory feeder movement is obtained on the wedge bar screen conveying surface,- such as shown at 21, when it i substantially horizontal and very fine material may beconveyed along this surface even though it is materiallysmaller in diameter than the spacing between the wedge bars. For example approximately ninety per cent of certain materials of 100 mesh size may be conveyed along the wedge bar conveying screen surface 21 when the spacing between the wedge bars i substantially greater than that of a mesh size. Thus a feeder conveyor of this type is decidedly inefficient as a dry classifier but highly efficient as a dewaterer or liquid and solid separator and it allows the use of a much larger screen mesh for a conveying surface than would be otherwise possible with any other type agitating separator.

When separating relatively large particles of clay from clay slip or slurry the wedge bar conveying surface 21 may be replaced by screen cloth conveying surface of a mesh incapable of passing the undesirable sized particles. The material is then passed over the screen and the usable slurry is withdrawn, the largerparticles being discarded or returned for crushing and reprocessing. This structure is also applicable for use in removing unslacked lime from milk of lime. The separation of liquids from solids by this method is speedily and efficiently accomplished.

I claim: a

1. A dewatering apparatus for wetted fruit and l) vegetables comprising a rigid unitary structure including a trough having solid bottom and side walls and a rigid screen of spaced parallel bars secured to each other and providing a smooth continuous longitudinal conveyor surface in the trough, said screen conveyor surface being supported from said side Walls of said trough and spaced above the trough bottom with the bars disposed longitudinally of the trough, resilient means supporting the rigid unitary structure of the trough with the screen in a substantially horizontal plane, and an electromagnetic motor mounted to reciprocate the trough and screen at a high frequency and low magnitude to precipitate the liquid from the wetted fruit and vegetables to the bottom of the trough where it is run 011 while simultaneously conveying the fruit and vegetables from one end of the screen to the other, and a discharge means for directing the precipitated liquid from one end of the trough bottom and in spaced relation from the position where the materials are discharged from the screen to independently control the liquid and REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,632,180 Forrest June 14, 1927 1,886,174 Flint et a1 Nov. 1, 1932 2,019,547 Theobald Nov. 5, 1935 2,153,243 Flint Apr. 4, 1939 2,163,249 Sherwen June 20, 1939 2,167,236 Gieseler July 25, 1939 2,183,896 Rupp et a1. Dec. 19, 1939 2,246,024 Vogel-Jorgensen June 17, 1941