US892275A

US892275A - Automatic filtering-machine.

Info

Publication number: US892275A
Application number: US39854607A
Authority: US
Inventors: Hugh Mackenzie Leslie
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-10-22
Filing date: 1907-10-22
Publication date: 1908-06-30
Anticipated expiration: 1925-06-30

Description

PATENTED JUNE 30, 1908.

H. M. LESLIE.

AUTOMATIG FILTERING MACHINE.

APPLICATION FILED 00T.22,1907.

3 SHEETS-SHEET 1.

No. 892,275. PATENTED JUNE 30, 1908.

' H. M. LESLIE.

AUTOMATIC FILTERING MACHINE.

APPLICATION rmzn OOT. 22,1901.

' genus-sum 2.

. Q mzesse-sr N I wen- 2250? No. 892,275. PATENTED JUNE 30, 1908. H. M. LESLIE.

AUTOMATIC FILTERING MACHINE.

APPLIOATION FILED 001. 22, 1907.

3 SHEETS-SHEET 3.

HUGH MACKENZIE LESLIE, OF MARIKUPPAM, INDIA.

AUTOMATIC FILTERING-MAGHINE.

Specification of Letters Patent.

Patented June 30, 1908'.

Application filed October 22, 1907. Serial No. 398,646.

To all whom it may concern:

Be it known that I, HUGH MAoKENzIE LEsus, a subject of the King of Great Britain, residing at Marikuppam, in the State of Mysore, Southern India, have invented certain new and useful Improvements in Automatic Filtering-Machines, of which the following is a specification.

This invention has reference to an improved construction of machine for the filtration of pulp and more particularly finely crushed ore or slime under treatment of the cyanid process of gold extraction.

This invention is novel in character and construction especially in so far as it has a series of filters arranged in fixed positions round a centrally arranged and rotatable device (or devices) to which the pulp or slime and wash liquor is applied and thereafter automatically delivered by means of pipes or equivalent to the said filters. Each filter can be-automatically charged, washed and discharged the charging and washing being capable also of adjustment to suit the material being filteredj.-

In order that my said invention may be clearly understood I have hereunto append ed, by way of illustration or example, explanatory drawings which show one mode of construeting the apparatus.

Figure 1 is a vertical section taken on'theline X, X, Fig. 2. Fig. 2 shows on the right hand side of the central line, a plan view and on, the left hand side a horizontal section taken on the line X, Y, Fig. 1. Figs. 3 to 8 are detail views showing how' a frame a is provided with vacuum and pressure pipe connections. Fig. 9 is a detail front view of one of the chutes 3.

The same reference letters wherever repeated indicate the same parts.

In carrying out my invention I make the machine of a circular shape and'I provide it with a series of filtering frames a arranged in a circle, each frame being provided with an axle b with which it is caused to revolve at suitable intervals by means to be hereinafter described. The frames a remain stationary unless when acted on by the aforesaid means. The ends of each axle b are supported in bearings 0, 0 which latter are supported on inner and outer bars (1, d, in a frameworkd the bars d, (1 being arranged concentricall round a centrally situated and vertical shaft e. The inner end of each axle b is provided with a tappet wheel f having four projecting prongs or teeth f.

The frames a are doubled, that is to say, they have two filtering surfaces 9, h, and they are reversible, so that when one surface has been used and the framerevcrsed the other surface is turned upwards ready for use. The frames a are made of either wood or metal or a combination of both and each side of each frame may be provided with an interior frame i wedged or bolted in position and which is covered with a filtering medium preferably cotton or linen duck. The filter- I ing medium is marked 9 h.

The centrally situated and vertical shaft e is supported by a footstep bearing 9' and arounc this shaft is suitably built up a circular framework (1 or other like structure which may consist of metal beams k of any desired section riveted or bolted together. Tappet arms Z, Z, are adjustably secured on the shaft e in such a position as to strike the prongs f of the tap et wheels f and so turn over or reverse the rames a. The shaft 6 is rotated by suitable gearing from a prime mover. Each frame a has, as shown at Figs. 3 to 8 openings a a, which communicate with passages a, 0., in a box a These boxes are fixed in position and the passage 0. is supplied with vacuum from the mam vacuum pipe m by a branch n while the passage a is supplied with compressed air- (or water under pressure) from a main pipe p by the branch p. The

pipe p runs round the frame and is provided with branches p leading to each frame.

The filtering is effected by means of vacuum from the main vacuum ipe m which is supported by the structure The branch pipes n are led from the main vacuum pipe m to the frames a, and each branch is provided with a controlling valve 0. By means of its proper valve 0 the vacuum is ap lied to the filter of each frame which is, for t 1e time being, uppermost and by means of the same valve when the frame is turned about its axis, the vacuum is shut off from this filter.

Com ressed air (or water under pressure) is 1 fitted with a controlling va ve v, the radial pipe communicating with a trough w which is divided into compartments 9c corresponding to the number of frames (1,. The wash rings 8 are adjustable on the shaft 6 so that the wash pipes can be adjusted to suit the trough and when adjusted can be fixed by means of a key. i

From the revolving hopper q the pulp or slime is delivered by means of the radially extending ipey (or pipes) fitted'with a controlling va ve l into the compartments 9; of the circularly arranged trough w which is disposed above the frames a and su ported byv means of the angle irons 4. Eac compartment r of the trough w is provided at the bottom thereof, with an outlet pipe 2 which conveys the pulp into a guiding chute 3 supported by angle irons 4 or the likecarriedby the structure (1 The chutes 3 deliver the pu llp to their respective frames a.

he wash rings may be simply hollow cast iron rings placed one above the other. Any suitable number of wash pipes (a) can be screwed into these rings a second ipe is indicated by dotted lines in Fig. 1 thereby multiplying the number of washings given. Further, by using one or more rings and wash-pipes the washing can be arranged to suit the class of ore under treatment. Means may be provided for operating the vacuum and compressed air (or water under pressure) valves automatically.

2 is a collecting trough into which the Washings run.

The modus operandi is as follows :The ulp or slime is sup lied continuously to the fiopper g and'runs own the ipe y into the compartments x of the troug w filling the same one after, the other as the hopper revolves with the vertical shaft e. 5O

From the compartments the pulp runs down into the respective chutes 3 and on to the filtering cloth of each filter for the time being'uppermost. As the vertical shaft 6 revolves, the wash pipe t follows the charging pipe y'and delivers Was-h liquor from the wash ring which is continuously supplied with water or other wash li uor through the hollow spindle 1 to each lter in succession so as to wash t e same. When the washing has been completed the vacuum is turned on by 'the valve- 0 operated by hand or otherwise and dries the pulp-on each filter frame which is thereafterturned over by the action of the rojecting arms I, Z striking the ta pets f. ust as the filter frame is almost ups1 e down a puff of com ressed air (or water under pressure) is a mitted to the frame by its compressed air branch p Simultaneously with the admission of compressed air to the filter for the time being undermost the filter for the time being u permost is brought into communication Wit the vacuum pipe.

It will be seen that as the pulp and wash liquor is continuously supplied and as the shaft continuously revolves, the filtering operation can be carried on continuously.

Having now fully described my invention -what I claim and desire to secure by Letters Patent is 1. A filtering machine having, in combination, ,a series of filters supported in a circle in fixed positions, a centrally situated and rotatable pulp and wash liquor supply, means for rotating the same and means for automatically delivering the pulp and the liquor to the filters.

2. A filtering machine having, in combination, a series .of double sided filters supported in a circle in fixed positions, a centrally situated and rotatable pulp and Wash liqu'or supply, means for rotating the same i and means for automatically delivering the pulp and the liquor to the filters.

3. A filtering machine having, in combination, a series of double sided and reversible filters su ported in a circle in fixed positions, a centra y situated and rotatable pulp and wash liquor supply, means for rotating the same means for reversing the filters and means for automatically delivering the pulp and the liquor to the filters.

4. Afiltering machine having, in combination, a series of filtering frames, each frame being double sided and having a filtering medium at eachside thereof sup orted in a circle in fixed positions, a centra y situated and rotatable pulp and wash liquor supply,

means for rotating the same means for reversing the filtering framesand means for automatically delivering the pulp and the liquor to the filtering frames.

5. A filtering maohine having, in combination, a series of double sided and reversible filters su ported in a circle in fixed positions, a centrally situated and rotatable pulp and wash liquor supply, means for rotating the same, means-for automatically reversing the filters and means for automatically dellvering the ulp and the liquor to the filters.

6. A tering machine having, in combination, a series of filters supported in a circle in fixed positions, a'centrally situated and rotatable shaft, a pulp receptacle on said shaft, a wash liquor receptacle on said shaft, and means for automatlcally delivering the pulp and the liquor to the filters.

7. A filtering machine hav1ng,1n comb1nation, a series of filterssuppo'rted in a circle in fixed positions, a centrally situated and rotatable shaft, a pulp hopper connected 1 hopper on the tion, a series of filters supported in a circlein fixed positions, a centrally situated and rotatable shaft, a hollow spindle surmounting said shaft, a liquid receptacle, a. pulp spindle, a wash ring on' the spindle and means for auton'iatically delivering the pulp and the liquor to the filters.

9. A filtering machine having, in combination, a series of filters supported in a circle in fixed positions, a centrally situated and rotatable shaft, an adjustable pulp hopper connected with said shaft, a liquid receptacle, a wash ring. connected with said shaft and means for automatically delivering the pulp and the liquor to the filters.

it). A filtering machine having, in combination, a series of filters supported in a circle in fixed positions, a contra ly situated and rotatable shaft, a pulp hopper connected with said shaft, a liquid receptacle, an adjustable wash ring connected with said shaft and means for automatically delivering the pulp and the liquor to the filters.

]1.-A filtering machine having, in combination, a series of filters supported in a circle in. fixml'positions, a centr: ly situated and rotatable shaft, an adjustable pulp hopper connected with said shaft, a liquid receptacle, an adjustable wash ring connected with said. shaft and means for automatically delivering the pulp and the liquor to the filters.

12. A filtering machine having, in combination, a series of filters sup )orted in a circle in fixed-positions, a centrally situated and rotatable shaft, an adjustable pulp hopper connected with said shaft, a liquid receptacle, adjustable wash rings connected with said shaft and means for automatically delivering tlfe'pulp and the liquor to the filters.

13. A filtering machine having, in combination, a series of filters sup orted in a circle in fixed positions, a centra ly situated and rotatable shaft, a pulp hopper connected with said shaft, a liquid receptacle, a Wash ring connected with said shaft and pipes for automatically delivering the pulp and the liquor to the filters.

14. A filtering machine having, in combination, a series of filters su )ported in a circle in fixed positions, a centrally situated and rotatable shaft, a pulp hopper connected with said shaft, a wash ring connected with said shaft, a circular trough divided into compartments, means for discharging the compartments into the filters and means for charging the compartments with pulp and wash liquor.

15. A filtering machine having, in combination a series of filters sup orted in a-circle in fixed positlons, a centre ly situated and rotatable shaft, a .pulp hopper connected with said shaft, awash ring connected with said shaft, a circular trough divided into compartments, chutes for discharging the compartments into the filters, and pi )es for charging the compartments with pu p and wash liquor.

it. A filtering machine having, in combination, a series of double sided filters, a circular frame supporting same, axles for the lilters, a centrally situated and rotatable pulp and wash liquor supply, means for automatically delivering the pulp and the liquor to the filters, and means for automatically reversing the filters so as to discharge the same.

17. A filtering machine having, in combination, a series of double sided filters, a circular frame supporting same, axles for the filters, a centrally situated and rotatable pulp and wash liquor supply, means for automatically delivering the pulp and theliquor td the filters, tappets on the axles, and means for striking the tappets and reversing the filters. v

IS. A filtering machine having, in combination, a series of double sided filters, a circular. frame supporting same, axles for the filters, a central and rotatable shaft, a pulp receptacle thereon, a wash device therein, means for automatically delivering the pulp and wash to the filters, tappets on the axles and radial arms on the shaft for turning the tappets.

IS). A filtering machine, having, in combination, a series of filters sup )orted in a circle in fixed positions, a centrally situated and rotatable pulp and wash liquor supply, means for rotating the same, means for connecting the filters with a vacuum-creating device, means for supplying compressed air to the filters, and means for automatically delivering the pulp and the liquor to the filters.

20. A filtering machine having, in combination, a series of filterssu ported in a circle in fixed positions, a central y situated and rotatable pulp and wash liquor supply, means for rotating the same and means whereby each filter can be automatically charged, washed and discharged.

21. A filtering machine having, in combination, a series of filters su ported in a circle in fixed positions, a central y situated and rotatable pulp and wash liquor supply, means for rotating the same, means whereby each filter can be automatically charged, washed and discharged, and means for adjusting the charging and washing to suit the material being operated on.

22. A filtering machine having, in combination, a series of filters supported in'a circle in fixed positions, means for automatically charging the filters,,means for automatically washim the filters and means for automatically discharging the filters.

23. A filtering machine having, in combination, a series of filters su ported in a circle in fixed positions means or automatically charging the filters in succession, means for automatically Washing the filters and means for automatically discharging the filters.

24. A filtering machine having, in combination, a series of filters supported in a circle in fiiied positions, means for automatically charging the filters in succession, means for automatically, in succession Washing the filters and means for automatically discharging the filters.

25. A filtering machine having, in combination, a series of filters supported in a circle in fixed positions,-means for automatically charging the filters in succession, means for automatically, in succession, washing the filters and means for automatically, in succession, discharging the filters.

In testimony whereof I afliX my signature in presence of two witnesses.

HUGH MACKENZIE LESLIE.

Witnesses:

CLAUDE ALFRED MEIKLEJOHN. ALEX. S. CAMPBELL.