US1958309A

US1958309A - Gravel washer and separator

Info

Publication number: US1958309A
Application number: US601011A
Authority: US
Inventors: Andrew M Lockett
Original assignee: A M Lockett & Co Ltd
Current assignee: A M Lockett & Co Ltd; A M Lockett & Company Ltd
Priority date: 1932-03-24
Filing date: 1932-03-24
Publication date: 1934-05-08
Anticipated expiration: 1951-05-08

Description

May 8, 1934. A. M. LOCKETT GRAVEL WASHER AND SEPARATOR Filed March 24, 1932 2 Sheets-Sheet l INVENTOR BYQJW ATI' EY May 8, 1934. A. M. LOCKETT GRAVEL WASHER AND SEPARATOR 2 Sheets-Sheet 2 Filed March 24, 1932 INVENTOR BY 2 ORNEY h \N W H W N n ii RWHH I KW llll i Q HIM ha. I m .M N J W \m Mu N v 1 000000 00 PM, I I [M 1 vm RN m R RN \m' .m MN n\\ \N i l atented May 8, 1934 UNITED STATES PATENT GFFICE Andrew M. Lockett, New Orleans, La., assignor to A. M. Lockett &

Company, Limited, New

Orleans, La., a corporation of Louisiana Application March 24,

4 Claims.

same time, be embodied in a machine characterized by simplicity of construction, efficiency of operation, and ease of repair.

With these and such other objects in view and realized advantages, as will be apparent from the description, my invention resides in the novel construction, combination and arrangement of parts, as hereinafter described and claimed, taken in connection with the accompanying two sheets of drawings, in which similar reference characters indicate the same parts in the several figures.

In the drawings:

Figure 1 is a side elevation of a washing apparatus constructed in accordance with the present invention;

Figure 2 is an end elevation of the same, looking at the forward or delivery end thereof;

Figure 3 is a central longitudinal sectional View;

Figure 4 is a transverse sectional view on the line IVIV of Figure 3; and,

Figure 5 is a central longitudinal sectional view of a certain rinsing and dewatering member of the structure, but of a modified form from that illustrated in Figure 3.

As will be seen, by comparison, the structure of the present invention follows, broadly, the structure of my patented apparatus above noted. The present improved structure embodies, primarily, a horizontally disposed biconical drum having a relatively long conical material receiving and rearward washing section 11 and an opposed relatively short material rinsing and forward delivery or rinsing section 12. These two v sections 11 and 12 are, preferably, a unitary structure and are provided with a pair of external annular rails 13 and 14 adapted to and supported upon corresponding pairs of supporting

rollers

15 and 16, which are suitable mounted in bearings which extend upwardly from

transverse girders

17 and 18 mounted upon longitudinally extending

opposite side frames

19 and 20.

The drum is further provided with an external annular rack 21 in intermeshing engagement with a driving pinion 22 on a power shaft 23 1932, Serial No. 601,011

mounted in bearings secured to the side frame 19 and provided with a belt-receiving pulley'24, or other suitable power imparting means of any desired type;

Mounted upon

transverse arches

25 and 26, which connect the

side frames

19 and 20 at their ends, is a perforated water supply pipe 27 so positioned as to extend longitudinally through the drum and in axial alignment therewith.

Material under treatment, which hereinafter, for convenience, shall be referred to as gravel, is introduced into the washing section 11 of the drum through a feed chute 28 disposed at the rear end of the drum. The drum is rotated by its rack and pinion driving gear, and the gravel is fed forwardly towards the widest portion of the drum and is gently agitated, during itsprogress, by the action of flights 29 secured to the inner face of the section 11. During this time the gravel is subjected to the washing action of jets of water from the pipe 27, sand, silt, and other undesirable foreign bodies being washed free from the gravel and carried off by the stream of water which overflows the rear end of the drum and away through a water discharge chute 30. In Figure 3 of the drawings, the normal water level in the drum is indicated by a heavy dotted line.

Secured to the inner face of the section 11 of the drum at a point adjacent its union with the section 12 of the same are a series of scoops or buckets 31. As the washed gravel is engaged by these buckets, it is carried upwardly by the rotation of the drum in the direction, as indicated by arrows in Figures 2 ands, and discharged from the buckets 31 into a chute 32 rigidly mounted upon the centrally disposed water supply pipe 27. This chute 32 delivers the washed gravel into a rinsing and dewatering drum 33, which is secured to the forward or delivery end of the section 12 of the main drum, is coaxial therewith, and also coaxial with the Water supply pipe 27. This rinsing'drum has a perforated wall and is provided, internally, preferably, with one or more helical gravel feeding blades or vanes 34.

As the washed gravel is discharged by the chute 32 into the drum 33, it is fed forwardly, therethrough, by the action of the vanes 34 and subjected, during this passage, to the rinsing action of jets of water from the pipe 2'7. The rinse water passes through the perforations in the wall of the drum 33, joining the water in the gravel washing drum, and the washed, rinsed and dewatered gravel is discharged from the forward end of the drum 33 to a delivery chute 35. The passage of the gravel through the drum 33 will be accelerated, if the drum is of conical contour, as shown in Figure 3. This is the preferred form, but, if desired, the rinsing drum may be of cylindrical contour, as shown at 133 in Figure 5, in which case the forward feed of gravel therethrough will be entirely dependent upon the feeding blades or vanes 134.

From the foregoing description of the construction and mode of operation, it will be seen that all the objects recited in the statement of invention are fully and efiiciently carried out and with the present improved washer, the mixed material, consisting of gravel, clay, dirt and vegetable matter, entering by feed chute 28, during its course in the washing or rear section 11 towards the forward or delivery section 12 of the washer, is subjected to an effective tumbling action due to rotation of said washer, and the large particles of said mixed material are broken up into finer and lighter particles which are carried by the water out of the rear end upon the discharge chute 30.

The washed material or gravel upon reaching a point near the depressed section or maximum diameter of the imperforate drum is picked up by the inner circumferentially disposed buckets 31 and transferred by means of the stationary intermediate transfer chute 32 to the interior of the perforated continued rinsing and dewatering drum 33.

After the separated and elevated material within said drum 33 has been further washed with clean water, said properly cleansed and rinsed material is forced by the screw action of the helical conveyers or vanes 34 out the forward end of said drum 33 and washer into a delivery chute 35 to be deposited on any common and well known form of traveling or wheeled conveyer, not shown.

Other variations and modifications in shape, size and arrangement of parts will readily suggest themselves to those skilled in the art, and it is to be understood that such changes are contemplated as forming part of this invention insofar as they fall within the scope of the appended claims.

What I claim is:

1. A mixed material washing and separating apparatus comprising a rotatably horizontally mounted double-tapered imperforate drum forming a rear washing chamber with a rearward outlet and a forward rinsing chamber having a forward outlet above the outlet of said rear washing chamber, means for rotating said imperiorate drum, means for supplying material in said washing chamber, a perforated rinsing drum secured to said imperforate drum and rotating within said rinsing chamber, means for supplying water into said rinsing drum and washing chamber, means for feeding washed material from the largest transverse section of said drum and forward end of said washing chamber into said rinsing drum, and means for discharging rinsed material from said rinsing drum.

2. A mixed material washing and separating machine comprising a rotatably horizontally mounted double-tapered imperforate drum forming a rear washing chamber with a rearward outlet and a forward rinsing chamber having a forward outlet above the outlet of said rear washing chamber, means for rotating said imperiorate drum, a feed chute at the rear section of said imperforate drum, a rotary perforated rinsing drum secured coaxially to said imperforate drum and within the forward rinsing chamber, a coaxial perforated pipe extending through said rinsing and double-tapered drums, and means secured within said imperforate drum at the junction of said rear washing and forward washing chambers, for elevating the washed material within and at the largest transverse section of the imperforate drum into the interior of said rinsing drum.

3. A mixed material washing and separating apparatus comprising a rotatably horizontally mounted imperforate double-tapered washing drum forming a rear washing chamber with a rearward outlet and a forward rinsing chamber having a forward outlet above the outlet of said rear washing chamber, a perforated rinsing drum secured within said rinsing chamber and coaxial therewith, means for rotating said washing drum, a fixedly mounted water supply pipe extending longitudinally through said drums and coaxial therewith, means for supplying material to said washing chamber, a chute mounted upon said water supply pipe and discharging washed material into said rinsing drum, means carried by and at the largest transverse section of said washing drum for feeding washed material to said chute, and means carried by and within said rinsing drum for discharging rinsed material therefrom through its forward outlet.

4. A mixed material washing and separating apparatus comprising a horizontally mounted double-tapered rotatable imperforate drum having a rear washing chamber with a rearward outlet and a forward rinsing chamber having a forward outlet above the outlet of said rear washing chamber, means for rotating said imperforate drum, means for supplying material into. said washing chamber, a rotary perforated rinsing drum mounted within said rinsing chamber and tapering towards said rear washing chamber, means for supplying water into said rinsing drum, means for feeding washed material from the lowest portion of said washing chamber into said rinsing drum, and means within said rinsing drum for progressively feeding the washed material through said rinsing drum and forward outlet.

ANDREW M. LOCKETT.