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Патент USA US3080073

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March 5, 1963
J. KRYNSKI4 ¿TAL
3,080,063
FILTER
Filed July 15. 1959
3 Sheets-Sheet 1
1
TTO R N EYS
March 5, 1963
J. KRYNsKl Erm.
3,080,063
FILTER
Filed July 15. 1959
5 Sheets~Sheet 2
March 5, 1963
J. KRYNSKI EVAL
3,080,063
FILTER
Filed July l5. 1959
3 Sheets-‘Sheet 3
ATTORNEYÖ
United States Patent
er'
ìdddddä
Patented lidar. 5, ïgâg
l
Z
tion and accompanying drawings which are merely ex
3,689,663
Fi'LTER
emplary.
In the drawings:
John Krynslsi and Richard E. Engwall, East Moline, lill.,
assignors to Ametek, inc., New York, NSI., a corpora
of filtering machine to which the principles of the inven
Filed July l5, 1959, Ser. No. 827,3l6
2 Claims. (Cl. 22l0_33ll)
tion have een applied;
FIG. 2 is a side elevational view of the apparatus
tion or Delaware
FIG. l is a top plan View of a horizontal pan-type
shown in FiG. l;
The present invention relates to improvements in hori
FIG. 3 is a sectional elevational view taken substantial
zontal pan-type filtering machines, and particularly to an l0 ly along line 3_3 of FIG. 2;
FlG. 4 is a sectional elevational view »taken substantial
improved corrosion-resistant construction of the filtering
pan.
ly -along line 4_4 of FIG. l;
FIG. 5 is an enlarged plan view of part of the hori
Filtering machines of the above described type are
usually of relatively large proportions and may include
zontal pan shown in FlG. l, with a portion of the sludge
sectionalized pan elements, each containing a plurality of 15 supporting screen broken away;
FÍG. 6 is a plan view looking along line 6_6 of FIG. 4;
individual pans for supporting the sludge to be iiltered.
FIG. 7 is a sectional elevational view taken substantial
in many filtering processes, the filtrate may be extremely
ly alorsy line 7_7 of FIG. 5;
corrosive, causing considerable damage to the pan con
Fl-G. 8 is a sectional elevational view taken substantial
struction as well as to other components which come in
Contact with the filtrate.
20 ly along line 3_3 of FIG. 5; and
The principal object of the invention is to provide
FIG. 9 is a sectional elevational view taken :substantial
ly along line 9_9 of FIG. 6.
a horizontal pan-type of filtering machine that Will be re
sistant -to corrosive filtrates.
Referring to MGS. l to 4, inclusive, the principles of
the invention are shown as applied to a horizontal pan
Another object of the »invention is to provide such a
type of filtering machine including a base lll mounted on
filtering machine in which the horizontal pan is made up
a raised foundation ill. The base lll» m-ay support the
of two semicircular sections, each having a plurality of
lower race 12 of an anti-friction bearing lâ, the upper
individual compartments, and in which the pan surfaces
race ‘ad of which may be fixed to pendant blocks l5.
subjected to the filtrate are protected from corrosion by
A horizontally disposed pan 16 may comprise a plu
>a corrosion-resistant layer of material that is etifective
throughout the pan surfaces as well as at the joints be 30 rality of segments and in the embodiment disclosed, two
tween the two semicircular sections.
segments i7 and 1S (FIG. 5) are shown. The segments
Another object of this invention is to provide such a
i7 and lâ may comprise channel members i9 radiating
filtering machine in which the individual compartments
from a central island 2li, and the outer ends or" said chan
of each section are protected from corrosion by a continu
nel members i9 may be joined to a peripherally disposed
ous layer of corrosion-resistant material that covers all of 35 plate 2i forming semi-circular segments.
the compartment surfaces as Well as separating rib sur
The channel members l@ may be fixed to the top of
faces between the various compartments.
blocks l5 so that the assembled pan may rotate about a
Another object of this invention is to provide a hori
vertical axis 22 on the anti-friction balls 23 of bearing
zontal pan-type of flltering machine in which radiating
i3. Between adjacent channel members i9, a sheet metal
caulliing grooves are provided between successive compart 40 plate 2f:- of generally “pie-shaped” may be welded or
ments for caullring into them edges of individual sludge
otherwise integrally joined to the webs of adjacent chan
suppo-rting screens for each compartment, and in which
nel members i9. These plates 24 are inclined down
the caulking grooves are completely covered with a cor
wardly from the peripheral plate 2l toward the island ZG,
rosion-resistant material.
terminating at, and joined to the periphery of a distribu
tor plate 25' to which the outer periphery of the island 2li
is attached. Orilices 26 may be provided about the plate
25, one for each pan compartment, and they may be in
communication with kidney-shaped orifices 27 within a
ln one aspect of the invention, a horizontal pan-type
iiitering machine may include a sectionalized pan device
which may include a plurality of separate sections in each
of which »may be located a plurality of individual pans.
The separate sections may include radially disposed ribs
that define the individual pans, and the ribs at the dividing
line or" successive sections may be bolted together to form
a circular pan adapted to be revolved in a horizontal
plane.
ln another aspect of the invention, radially disposed
cries of stationary exhaust or filter val es 23 mounted
within the circle defined by the foundation ll.
Driving means may be provided for the rotatable pan
and it may include a series of rolls 2% arranged peripheral
ly about the blocks l5 in a manner to provide a sprocket
laid over each separate pan compartment in a manner to
3d. Referring to FIG. 2, the sprocket 30 may mesh with
a sprocket wheel or gear Si that is adapted to be rotated
by a motor 32 through a gear reduction unit 33.
Refer-ring to lilGS. 4 and 5, ribs
may extend be
be supported by concentrically arranged series of ribs in
each pan compartment with their edges overlying the
fixed to said members §19 in a manner to provide a clear
caullzing grooves may be integrally attached to the top
of the radial ribs, and separate screen :sections may be
tween adjacent channel members 19 and they may be
caulking grooves between successive pan compartments. 60 ance between them and the plates 24 forming the bot
toms ot the pan compartments.
ln another aspect of the invention, a relatively thisL ,
Referring to PlG. 7, radially extending, channel-shaped
corrosion-resistant layer of material may be bonded to
caulking groove members 3S may he rigidly attached to
the interior surfaces ot the pan compartments as well as
the tops of the members i9, and the top of said members
to the exposed surfaces of the dividing ribs, the caulkiug
ribs and the section joining ribs of the pan assembly. 65 35 may be at the same elevation as that of the ribs 3d.
Referring to FIG. 4, individual “pie-shaped” screen mem
This layer of corrosion-resistant material may be sheet
bers 3o may be supported by the ribs 34 of each pan com-y
rubber, polyethylene sheet, or it may be llame-sprayed
partment, and the edges of the screen members 36 may
polyethylene similar to the well known metallizing proc
ess.
lie across the caulking groove members 3S. These edges
The above, other objects and novel features of the in 70 may be forced into the caulking grooves and held therein
vention will become Iapparent from the following specifica
by caui’sing material.
4
3
What is claimed‘is:
Referring to FIG. 1, a sludge or slurry feeding device
1. In a horizontal filter having a rotatable pan assembly
composed of a plurality of segments, each of said seg
ments including a plurality of individual pan compart
37 may be located above the pan so as to feed slurry to
be filtered. evenly over the radial dimension of the hori
zontal pan. A washing liquid distributing means 38 may
ments, means for feeding fluid to be filtered, means to
be located over the pan in a manner to feed wash liquid-to
the slurry as the table is continuously rotated at a rela
withdraw filtrate from each compartment, eachy of said
segments terminating in channel ribsV havingvertical sur
tivelyl slow speed in the direction of the arrow (PEG. 1).
faces, channel members providing radial ribs in saidY seg
Suction may be applied to the filter valves 2S for sucking
ments which` together with said channel ribs define said
the ñ-ltrate through the screen 36. The filtrate gravitates
down the sloping surface of the plates 24 toward the 10 compartments, dovetail shaped caullcing groove members
onA eachV of said ribs, a corrosion-resistant coating of
valvesvîâ from` which ythe iìltrate is conducted to various
separation receivers (not shown).
During the process, a residue cake develops on the
screen 36 which is fed to a cake-removing device 39
. íiexi'oleA materialV for each segment' covering the surfaces
of said pan compartments as welly as the surfaces of said
ribs and caulking groove members that would otherwise
be subjecttocontact -by the ñltrate, Vthe coating of each
('EIG. l). The device 39 may include a spiral conveyor
segment terminating on the vertical >surface of each ter
4d that scrapes the filter cake from the screen 36 and feeds
ininalV channel rib, means for rigidly- fastening> adjacent
segments together and for compressing the terminal por
tions ofY each coating along a parting line between said
vertical surfaces, segmentally shaped screen members
it through m exit pipe 41 (FIG. 2). The spiral conveyor
4t) may -be driven by a motor 41A through gearing 42 in
a well known manner.
Referring to FIG. 7, the interior surfaces-of the pan
compartments may be provided wtih a corrosion-resistant,
relatively thick layer of material 43. Thisv layer may eX
tend alongV the bottom of the pan compartment formed
by the plate 24, the side wallsof'the compartment formed
by adjacent channel members 19, around the top leg of
each overlying a. corresponding individual pan compart
ment and portions of adjacent Vribs and caulking groove
members with their edges held within the lcoated dove
tail shaped grooves-of said caulking members, and caulk
25
the member, thence over the exposed surfaces of' the
caulking groove member 35„thence over the correspond
ing material for holding said screenV edges insaid coated
dovetail shaped grooves.
’
2,'In a horizontal iilter> having arotatable. pan as
ing surfaces within adjacent> compartments. The layer of
sembly composed of a plurality of segments, each of.said
44 onfthe outside of the members V219> forming the parting
line between adjacent pan- segments.
Adjacent pan segments may abut each other along ter
minating members19-of each segmentand bolts 45 may
be' employed to rigidly fasten adjacent pan segments to
withdraw filtrate from each compartment, each of said
segments terminating innchannel ribs having vertical sur
segments including a plurality ofr segregated pan compart
material 43 may be continuous throughout all of the com
partments ofv a pan segment', terminating in end portions 30 ments, means for feeding fluid to be filtered, means to
»gether in a mannerv to compress the terminating'layers 44
of the corrosion-resistant material 43. In addition, all of
faces, channel membersprOVidingradial ribs in saidseg
mentsA which together with said -channelribsdeñne-said
compartments, dovetail. shaped caulkingl groove 1 members
on> each of said ribs,l a corrosion-resistant coating ofñex
ible material lfor each segment` bonded. tothe surfacesV of
the bars 34 may be encased in the'rnaterial 43 as well as
said pan compartments as well as the surfaces of said
effect thevulcanizing action.
vertical surfaces, segmentally shaped v screen members
the inner and exterior'surfaces of the peripheral plate 21. 40 ribs and caulking `groove¿members that» would otherwise
besubject toV contact by the filtrate, the coating of each
Thelayer of material throughout the pan compartments
segmentterminating on >the. vertical surface of each ter
of eachîsegmentmay be continuous and may be made of
minal channel> rib, means for rigidly fastening adjacent
rubber whichmay be vulcanized to thernetal surfaces it
segments together and for «compressing,theterminal por
covers, by introducing a pan segment into a steam pres
tions of each coating along a parting-line betweensaid
sure. vessel that will apply suiiicient heat and pressure to
.
Alternatively, the layer 43 may bey provided by flame
spraying polyethylene onto the> metal surfaces to be pro
tected in a manner similar to the, well known method
each overlying a corresponding segregatedrpan «compart
ment and portions of adjacent ribs and caulking groove
members with their edgesheld within the coated dovetail
shaped grooves of said caulking‘members, and caulking
of metallizing parts. Furthermore, the lay-er 43 may be 50 material for holding said screen edges insaid-coated dove
a sheet of polyethylene, and the joints may be heat scaled
tail- shaped grooves.
ina known manner.
References Cited in the file of this patent
vlt. is important, of course, that the corrosion-resistant
layer adhere’tightly to the metal which it is intended to
protect.
Although the various features of the improved corro
sion-resistant, horizontal pan-type of iilter have been
shown and described to fully disclose one embodiment of
the inventiornrit will be evidentV that numerous changes
may be made in such details and- certain features may be 60
used without others without departing from the principles
ofthe invention.
UNITED STATES PATENTS „
627,293
882,202’
1,440,109
2,100,895
2,588,912
Brighton ____________ __ June
Hunt- _______________ __ Mar.
Schenck _____________ __ Dec.
Austin ______________ __ Nov.
Denhard ____________ __ Mar.
20,1899
17, 1908
26, 1922
30, 1937
11, 1952
FOREIGN PATENTS
894,668
France ______________ __ Mar. 20, 1944
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