CA2007825C - Material separating apparatus - Google Patents
Material separating apparatusInfo
- Publication number
- CA2007825C CA2007825C CA 2007825 CA2007825A CA2007825C CA 2007825 C CA2007825 C CA 2007825C CA 2007825 CA2007825 CA 2007825 CA 2007825 A CA2007825 A CA 2007825A CA 2007825 C CA2007825 C CA 2007825C
- Authority
- CA
- Canada
- Prior art keywords
- fingers
- particles
- trough
- finger screen
- screen means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A material separating apparatus for separating particles up to a preselected size from a material having particles of different sizes therein includes a trough having a material input end longitudinally spaced from a material discharge end. The apparatus also includes a separator having a plurality of longitudinally spaced finger screen sections between the input end and the discharge end and along the longitudinal axis of the trough. The finger screen sections each have a backbone extending from side to side across the width of the trough and also each have forwardly extending fingers connected at one end to the backbone. The fingers are spaced side by side from each other by a preselected amount at forward ends thereof sufficient to allow particles up to the preselected size to pass through the fingers as the trough is vibrated to cause the material to move from the input end to the discharge end. The finger screen devices also each have the forward ends of the fingers thereof overlapping the next forwardly adjacent finger screen device and include a rearwardly depending leg connected at one end to the backbone thereof.
The apparatus further includes the forward ends of the fingers being vertically spaced above the next forwardly adjacent finger screen device by an amount equal to the preselected amount of spacing therebetween. With this arrangement, the material is conveyed along therethrough and over successive ones of the finger screen sections with particles up to the preselected size falling through the finger screen sections as the material moves from the input end to the discharge end of the trough.
The apparatus further includes the forward ends of the fingers being vertically spaced above the next forwardly adjacent finger screen device by an amount equal to the preselected amount of spacing therebetween. With this arrangement, the material is conveyed along therethrough and over successive ones of the finger screen sections with particles up to the preselected size falling through the finger screen sections as the material moves from the input end to the discharge end of the trough.
Description
20078~:5 Case 78 MATERIAT. SEPARATING APP~RATUS
Field of the Invention The pre~ent invention g~nerally relates to a material separating apparatus and, more particularly, to an apparatus for separating particle~ up to a preselected size from a material having particles of di~ferent ~izes therein.
Bach4-oulld o~ the Inventt.on Many sQparating devices employ a screen over which material is moved 80 that the smaller particles may pass~
through the screen while the larger particles pass therealong. Such screens are o~ten sub~ect to excessive wear and are BUb~ ect to damage due to the clogging of the screen by the particles them6elves. Furthermore, the material must often be recirculated o~er the screen in order to effectively filter out a high ratio of partlcles of the size attempted to be separated therefrom.
To overcome thi6 problem, a separator with a plurality of scr~ens, preferably inclined and overlying each other in series, wa~ ~u~osed in U.S. Patent No. 3,232,4~1.
20 While hiqhly satisfactory ~or its int~n~ed purpose, there has re~ine~ a need for a material separating or classifying apparatus for di~ficult material~ which wo~ld catch in typical wire mesh or perforated screen type deYices.
Specifically, there are a number of di~ficult materials that are not readily separable by any apparatus that i8 presently commercially available.
In this con~ection, it would be desirable to be able to cla~sify or separate such materials in a continuous proce~s. Among the materials to which this would apply, and 30 by way of example only, i~ shredded auto scrap re~idue, building demolition materials, wood re~use including bark, ~07825 Case 78 municipal solid wastes, solid-fluid mixtures, biomass fuels, and the like. For all such materials, the apparatus ~hould be no~ b~ n~, self-relieving, and stay clean without "porcupining."
The present invention is directed to uve.~oming the above stated problems and accomplishing the sta~ed ob;ects by providing a unique material ~eparating apparatu~.
~mary of the Invention Accordingly, the present invention i5 used in a material separating apparatus for sQparating particles of di~ferent sizes from a material. ~he apparatus in which the invention is u~ed includes a trough having a material input end longit~d;n~lly spaced from a material fli~rh~rge end together with means for separating particles up to the pre~elected size from a material having particles of different sizes therein. The separating means includes a plurality of longitu~;n~lly spaced finger 6creen means disposed between the input end and the ~;~chArge end and along the longitudinal axis of the trough. Each of the finger screen means includes a b~ckhone ext~;ng from side to side across the width of the trough and also includes forwardly ext~;n~ fingers connected at one end to the backhonP. The fingers are spaced side by side from each other by a preselected a~ount at forward ends thereof sufficient to allow particles up to the preselected size to pass through the finqers. Each of the finger screen means has forward ends of its fingers overlapping the next forwardly adjacent finger screen mean8 and includes a rearwardly depending leg connected at one end to its backbone. The apparatus in which the invention is used al~o has the forward ends of the fingers vertically spaced above the finger screen means immediately forward thereof by an 2~078~:5 CasQ 78 distance equal to the pre~elected amount of spacing between the fingers. W~th this arran~l - L, the material will be co~e~ed along the trough and over successive ones of the finger screen means with particles up to the preselected size falling through one of the finger screen means as the material moves from the input end to the dt~ch~rge end o~
the l,L O~h .
To accomplish the objective~ of the invention, the apparatus will include means for resiliently ~u~po~Ling the ~Lu~yh relative to a ~u~olLing surface to permit vibratory v ~~~ of the trough together with means for vibrating the trough for agitating and moving the material fro~ the input end toward the discharge end.
The invention i8 particularly useful for sQparating particles up to at least two distinct preselected sizes from a material having particlcs of a variety of different size~ therein. The apparatus then preferably includes at least two longit~1din~1ly adjacent screen regions, each of which is made up of the finger screen 20 means, for separating the material into at least two separate batches, one of which is of substantially uniform smaller sized particles and the other of which is of sub~tantially uniform larger sized particles. For this application, the smaller sized particles are separated from 25 the material upstream of where the larger sized particles are separated from the material with any ~ -1 n ing material being ~sch~rged at the fl~çh~rge end of the trough.
In the preferred e ~ t, a ~loping chute is suspended from below the LL ~h for each of the longit~ ly ad~acent screen regions to receive particles falling therethrough. Wlth this arrang- ~nt, a separate particle cor.veyor is al60 provided below a discharge end of 2~0782~;
Ca~e 78 each of the chutes for conveying partlcles received in the chutes to sep-arate destinations.
Preferably, sach of the fingers of any one of the finger screen means is laterally offset 50 as to be aligned with a gap between a pair of the fingers of the finger screen means ; -d~tely forward thereof. It is also advantageous for the fingers of each of the finger screen means to extend forwardly and slightly upwardly relative to the ~r-khone of the finger screen means ; ~ tely forward thereof. As for the rearwardly ~ep~n~ing legs, they each extend rearwardly and downwardly relative to the backbone of the COL L e8~0~d; n~ finger screen means to direct the particles toward one of the particle receiving chutes.
In a highly preferred e~hod;r~rL, the fingers are spaced from each other by a tapering ---u,lL defining a gap diverging outwardly from the backbone to the forward ends thereof. Thus, the ~ spacing between adjacent fingers, i.e., the spacing at the forward onds thereof, i~
equal to the vertical spacing or distance between the forward end8 of the fingers and the finger screen means ~ tely forward thereof. By utilizing a diverging gap between the finger~, particles up to a preselected size are either freed to fall into a 610ping chute or caused to continue to move with the material toward the discharge end of the ~,ou~h.
An additional feature of the invention involve~
the fact that the finger screen means being connected to the ~rouyh. More specifically, the b2ckhone of each of the fing~r screen means is con~cted directly to the ~u~h at 30 opposite ends theraof whereby the finger screen ~ean~ are exclusively supported by the trough. In this ~n~r, there need be no underdeck cross ~uppo~Ls that might serve to cause hang-ups.
2~078:25 Ca~e 78 Still other objects, advantages and feature~ of the invention will be apparent from the following epecification taken in conjunction wtth the accompanying drawing~.
Brief Description of the Drawinas Fig. 1 i8 a side elevational view of a material separat~ng apparatus accordinq to the presenk invention:
Fig. 2 is a front elevational view of the material separating apparatus of Fig. 1:
Fig. 3 is a plan view of the material separating apparatus of Fig. 1:
Fig. 4 i8 a side elevational view illustrating the a pair of longitu~1n~11y ad~acent finger screen sections;
Fig. 5 i5 a top plan view of a single finger screen section: and Fig. 6 iR a pe~ective ViQW illustrating the relation~hip of a plurality of finger screen sectlons.
Detailed Description of the Pxeferred Embodi~ent Referring to the drawings, and first to Fig. 1, the reference numeral 10 designates generally a material separating apparatus in accordance with the pre~ent invent$on. The apparatus 10 includes a ~rouyh generally de~ignated 12 having a material input end as at 14 longitu~inAlly spaced from a material ~ hArge end as at 16 together with means for separating particles up to a pre~elected size from a material having particles of different sizes therein. In particular, the separnting means includes a plurallty of finger screen ~eans or sections 18 disposed between the input end 14 and the discharge end 16 along the longitu~nAl axis 20 of the ~ou~ll 12.
;~30~82~i Case '78 Referring spacifically to Figs. 4 through 6, the finger screen ~ections 18 eac:h include a backbone 22 ext~n~ ng from slde to sidQ acros~ the width of the trough 12 ( ee, also, Figs. 2 and 3). Each of the finger scr~Qn 5 sections 18 also includes forwardly ext~n~ng fingers 24 conn~cted at one end 24a to the }~cl~hone 22 and spaced side by side from each other by a preselected r L at forward ends 24b thereof sufficiQnt to allow particles up to the preselectQd size to pass through the finger~ 24. As shown, 10 the finger screen sQctions 18 alRo include a rearwardly ~p~nrling leg 26 connected a~ one end 26a to the back~one 22.
RQferring to Fig. 4, the finger screen sections 18 are arranged such that the forward ends 24b of the fingers 15 24 overlap the finger screen ~ection 18 ~ ~~iAtely forward thereof. It should ~e noted in this conn~ction that the forward ends 24b of the fingers 24 are vertically spaced above the next forwardly ad~acent finger screen ssction 18 by a distance egual to the presQlected amount of spacing 20 beL~ n thQ fingers 24. In this -nnP~, particles up to the preselected size will readily fall thluu~}~ the flnger screen sections 18 as the material mov~s from the input end 14 to the ~t~hArge end 16 of the l.~,uyll 12.
Referring to Figs. 1 and 2, the trough 12 i5 25 resiliently ~u~o~ed by meanR of a plurality of spring 28 which are disposed between spring slaf~ts as at 30 on the bottom of the trough 12 and a tl~hlll ~r fram2 ~l.L~ uLe generally de~ignated 32 which i~ 8~u~ed to a ~ Ling surface 33. In addition, the apparatus 10 include~ m~an~
30 for vibrating the trough 12 for agitating and movlng the material therealong. In this conn~ction, the vibrating means preferably includes a high frequency vibration genelhLor 34 mounted to the LLUUC~h 12 on a ~u~ ing frame Z~1~)78ZS
Ca~e 78 36 so as to impart vibrational force~ causing v~ment of the material along the longit~1 n~ 1 axis 20 from the input end 14 toward the c~#~h~rge end 16 of the l_~GUyh 12 .
As will be appreciatQd, the material will be 5 cu.,ve~,ed along the trough 12 and over succ~Five ones of the finger screen sections 18 as it moves from the input end 14 toward the discharge end 16. A6 tha material is cG.,~eyed therealong, particlas up to the pre~slQcted slze, i.e., the si2e which corrP~pond~ to the preselected spacing between 10 the forward ends 24b of the fingers 24 as well as the vertical spacing between the forward ends 24b of the finger6 24 and the next forwardly ad~ac~nt of the finger scraen sections 18, will fall through the finger screen 6ections 18 into at least one sloping ch~lte such as 38 provided for 15 purposes of collecting and co.,v~ying the f~ll ing particleB.
Ae shown, the sloping chute 38 i5 susp~n~le~ from below the t.~uuyh 12 to receive such particle~ and a particle conveyor such as 40 is provided below a ~9~h~rge end 38a of the chute 38 for ;n~lep~n~ertly conve~ing such particles to a 20 separate destination.
As will be appreciated by referring to Fig. 1, finger screen sections 18 are preferably provided in at least two longitu~l;nally adjacent screen regions Sl and S2 for separating the mater~al into at least two separate 25 batches of different sized particles. One of the batches i8 o~ substantially uniform smaller sized particles and the other of the batches is of substantially uniform larger sized particles. More specifically, the smaller sized particles are separated from the material at an up~eam 30 point, i.e., in screen region Sl, whereas the larger sized particles are separated from the material at a downstraam point, i.e., in screen region S2.
;~3C)78~:S
Ca~e 78 Wlth this arrangement, it i~ possible to sQparate particles up to at least two distinct pre~elected sizes from a material having particles of a variety of different sizes therein. In other words, the material wlll } e conveyed 5 along the L~ h 12 and ov~3r ~uc~ce~Qive onQs of the finger screen section~ 18. As thi~ occurs, all of the ~maller sized particles fall through the finger scraQn sectlons 18 in the u~L,eam scr~en region Sl while all of tha larger sized particles fall through the finger screen 6ections 18 10 in the downstream screen region S2.
With this arrangement, there will be 610ping chutes 38 and 42 ~ p~n~ed from below the L~u-~h 12 in longit~in~lly spaced relat$or~h~p for each of the scraen regions Sl and S2. The~e sloping chutes will receive 15 particles falling through the finger screen sections 18 in the re~pective screen region~ S1 and S2. Further, there will be separate particle cc,nv~yor~ 40 and 44 below h~rge end~ 38a and 42a for ln~pp~nr3arltly col,veying particles received from each of the chute~ 38 and 42 to 20 separate destinations.
Referring to Figs. 5 and 6, it will be seen that the fingers 24 are sp~ce~ from each other by a tapering amount defining a gap 46 diverging outwardly from the backbone 22 to the forward ends 24b thereof. It will al60 25 be appreciated by referring specifically to Fig. 6, and al80 Fig. 3, that the fingers 24 of any one of the finger screen sections 18 are laterally offset so as to be aligned with the gap 46 between a pair of the fingers 24 of the finger screen section 18 immedlately forward thereof. In other 30 word~, the fingers 24 of ad~acent ones of the finger screen sections 18 are staggered in a manner r:~ki ng it possible to eliminate material "bypass."
Z(~87~ S
Case 78 _ g _ A~ will be appreciated hy referring to Figs. 1 through 3, the finger screen sections 18 are each connected to and exclusively ~jul~o~Led by opposite sides 12a and 12b of the t.~uy}. 12. More ~pecifically, the finger screen 5 sections 18 are 80 cQnnected at opposite ends of the ba~khon~ 22 thereof. By 60 configuring and 6ecuring the finger screen sections 18, it i8 possible to avoid underdeck cross ~ G~Ls that might otherwise be capable of causing hang-ups.
As bQst shown in Fig. 4, the rearwardly ~1epPn~1ng leg 26 of each of the finger ~creen sections 18 extends rearwardly and downwardly relative to the backbone 22 which causes particle~ to be directed toward one of the particle receiving chutes 38 and 42. As also ~hown in Fig. 4, the 1S fingers 24 of each of the finger screen sections 18 extend forwardly and slightly upwardly relative to the backbone 22 of the finger screen section 18 1 ~ tely forward thereof.
With this arran.J- ~rl unique arra"~l -nt o~ finger ~creen ~ections 18, the present invention ha~ provided what 20 can be characterized as a "cA~c:~l; ng action finger-screen."
While not previou~ly mentioned, the forward ends 24b of ad~acent ones of the ~ingers 24 are spaced apart by an equal ~,L for all of the finger screen sections 18 in any one of the separate screen regions 6uch as Sl and S2 25 (see Fig~3. 1 and 6). The degree of separation, as previously mentioned, is the same as the vertical spacing beL~.ecn the forward ends 24b of the fingers 24 and the next forwardly adjacent one of the finger screen sections 18.
With this arrAn~- -nt, there are unobstructed openings to 30 allow "free fall" of the a~LopLiately sized particles as the material is c:o~ eyed from the input end 14 toward the ~chArge end 16 of the trough 12.
zoo7a~
Ca~e 78 -- 10 ~
Referring to Flg~. 1 and 3, the material separating appnratus 10 is parttc~lA~ly well suitQd for s~psrating plural sized part~cles into at least two batches of particlos. It will be appreciated that the plural ~ized s particles comprise a material to be classified by size. In this c~ Lion, one of the batche~ o~ particl~s wlll contain particles up to a first presQlectQd size and another of the batche~ of particles will contain partlcles up to a secon~l preselected 6iZQ~
wlth this underst~n~l~nq, the fingQrs 24 are spaced side by side from each other by a first (smaller) preselectQd amount at forward Qnds 24b of the first, u~L e~m screen r~gion Sl of finger screen sections 18 sufficient to allow particles up to the first pre~elected size to pass ~hrough the fingers 24 thereof. In l~ke f~hi ~n, th~ finqer8 24 are spacQd side by side from each other by a ~c~n~ tlarger) amount at forward ~nds 24b of the 8ecnnA r ~ - ~ ~ screen region S2 of finger screen sections 18 suf~c~Pnt to allow particles up to the ~econd preselected size to pass through the fingers 24 thereof.
As a result, the material having plural sized particl~s will be conv~yed along tha L~u~h and ov~r s~lcce~sive ones o~ the finger scrQen ~Gctions 18 with particles up to the first preselected size falling through the finger 6creen sections 18 of the first, u~,eam sCrQen section Sl, particles up to the seconA presalected ~ize falling through the ~econ~, dù~ Le~m screen region S2, and particles larger than the 6econd pre~slected s$ze be~ng ~ h~rged from the rli ~ch~rge end 16 o~ the ~,~u~h 12 onto a material COnve~ur 46 as the material moves from the input end 14 to the rl ~ cr~h~rge end 16 of the trough 12.
With this underst~nrling o~ thQ invention, the material separating apparatu~ is a non-h~n~ ng ~
~0~2s Ca~e 78 self-relieving design whlch stays clean wlthout "porcupining." The diverging g~ps betwsen fingers which gr~n~lly increasQ in width free on-siza pieces to allow the_ to drop through or continue to be cu-.ve~ed, and the design of the fingers provides a "c ; n~ action for longer pieces which will not completely pa86 through thereby avoiding wedging. Moreover, modular self-contained sectiûns are utilized for quick and easy replao~ , the apparatus can be custom built in a variety of 5iZe6 and ~aterial~, and multiple size particle sQparations can be accomplished on a single deck.
While in the foregoing there has bQen set forth a preferred ~-~o~iment of the invention, it will be understood that the details herein given are for p~oses of illustration only and the invention is to be limited solely by the spirit and scope of the appe~de~ claims.
Field of the Invention The pre~ent invention g~nerally relates to a material separating apparatus and, more particularly, to an apparatus for separating particle~ up to a preselected size from a material having particles of di~ferent ~izes therein.
Bach4-oulld o~ the Inventt.on Many sQparating devices employ a screen over which material is moved 80 that the smaller particles may pass~
through the screen while the larger particles pass therealong. Such screens are o~ten sub~ect to excessive wear and are BUb~ ect to damage due to the clogging of the screen by the particles them6elves. Furthermore, the material must often be recirculated o~er the screen in order to effectively filter out a high ratio of partlcles of the size attempted to be separated therefrom.
To overcome thi6 problem, a separator with a plurality of scr~ens, preferably inclined and overlying each other in series, wa~ ~u~osed in U.S. Patent No. 3,232,4~1.
20 While hiqhly satisfactory ~or its int~n~ed purpose, there has re~ine~ a need for a material separating or classifying apparatus for di~ficult material~ which wo~ld catch in typical wire mesh or perforated screen type deYices.
Specifically, there are a number of di~ficult materials that are not readily separable by any apparatus that i8 presently commercially available.
In this con~ection, it would be desirable to be able to cla~sify or separate such materials in a continuous proce~s. Among the materials to which this would apply, and 30 by way of example only, i~ shredded auto scrap re~idue, building demolition materials, wood re~use including bark, ~07825 Case 78 municipal solid wastes, solid-fluid mixtures, biomass fuels, and the like. For all such materials, the apparatus ~hould be no~ b~ n~, self-relieving, and stay clean without "porcupining."
The present invention is directed to uve.~oming the above stated problems and accomplishing the sta~ed ob;ects by providing a unique material ~eparating apparatu~.
~mary of the Invention Accordingly, the present invention i5 used in a material separating apparatus for sQparating particles of di~ferent sizes from a material. ~he apparatus in which the invention is u~ed includes a trough having a material input end longit~d;n~lly spaced from a material fli~rh~rge end together with means for separating particles up to the pre~elected size from a material having particles of different sizes therein. The separating means includes a plurality of longitu~;n~lly spaced finger 6creen means disposed between the input end and the ~;~chArge end and along the longitudinal axis of the trough. Each of the finger screen means includes a b~ckhone ext~;ng from side to side across the width of the trough and also includes forwardly ext~;n~ fingers connected at one end to the backhonP. The fingers are spaced side by side from each other by a preselected a~ount at forward ends thereof sufficient to allow particles up to the preselected size to pass through the finqers. Each of the finger screen means has forward ends of its fingers overlapping the next forwardly adjacent finger screen mean8 and includes a rearwardly depending leg connected at one end to its backbone. The apparatus in which the invention is used al~o has the forward ends of the fingers vertically spaced above the finger screen means immediately forward thereof by an 2~078~:5 CasQ 78 distance equal to the pre~elected amount of spacing between the fingers. W~th this arran~l - L, the material will be co~e~ed along the trough and over successive ones of the finger screen means with particles up to the preselected size falling through one of the finger screen means as the material moves from the input end to the dt~ch~rge end o~
the l,L O~h .
To accomplish the objective~ of the invention, the apparatus will include means for resiliently ~u~po~Ling the ~Lu~yh relative to a ~u~olLing surface to permit vibratory v ~~~ of the trough together with means for vibrating the trough for agitating and moving the material fro~ the input end toward the discharge end.
The invention i8 particularly useful for sQparating particles up to at least two distinct preselected sizes from a material having particlcs of a variety of different size~ therein. The apparatus then preferably includes at least two longit~1din~1ly adjacent screen regions, each of which is made up of the finger screen 20 means, for separating the material into at least two separate batches, one of which is of substantially uniform smaller sized particles and the other of which is of sub~tantially uniform larger sized particles. For this application, the smaller sized particles are separated from 25 the material upstream of where the larger sized particles are separated from the material with any ~ -1 n ing material being ~sch~rged at the fl~çh~rge end of the trough.
In the preferred e ~ t, a ~loping chute is suspended from below the LL ~h for each of the longit~ ly ad~acent screen regions to receive particles falling therethrough. Wlth this arrang- ~nt, a separate particle cor.veyor is al60 provided below a discharge end of 2~0782~;
Ca~e 78 each of the chutes for conveying partlcles received in the chutes to sep-arate destinations.
Preferably, sach of the fingers of any one of the finger screen means is laterally offset 50 as to be aligned with a gap between a pair of the fingers of the finger screen means ; -d~tely forward thereof. It is also advantageous for the fingers of each of the finger screen means to extend forwardly and slightly upwardly relative to the ~r-khone of the finger screen means ; ~ tely forward thereof. As for the rearwardly ~ep~n~ing legs, they each extend rearwardly and downwardly relative to the backbone of the COL L e8~0~d; n~ finger screen means to direct the particles toward one of the particle receiving chutes.
In a highly preferred e~hod;r~rL, the fingers are spaced from each other by a tapering ---u,lL defining a gap diverging outwardly from the backbone to the forward ends thereof. Thus, the ~ spacing between adjacent fingers, i.e., the spacing at the forward onds thereof, i~
equal to the vertical spacing or distance between the forward end8 of the fingers and the finger screen means ~ tely forward thereof. By utilizing a diverging gap between the finger~, particles up to a preselected size are either freed to fall into a 610ping chute or caused to continue to move with the material toward the discharge end of the ~,ou~h.
An additional feature of the invention involve~
the fact that the finger screen means being connected to the ~rouyh. More specifically, the b2ckhone of each of the fing~r screen means is con~cted directly to the ~u~h at 30 opposite ends theraof whereby the finger screen ~ean~ are exclusively supported by the trough. In this ~n~r, there need be no underdeck cross ~uppo~Ls that might serve to cause hang-ups.
2~078:25 Ca~e 78 Still other objects, advantages and feature~ of the invention will be apparent from the following epecification taken in conjunction wtth the accompanying drawing~.
Brief Description of the Drawinas Fig. 1 i8 a side elevational view of a material separat~ng apparatus accordinq to the presenk invention:
Fig. 2 is a front elevational view of the material separating apparatus of Fig. 1:
Fig. 3 is a plan view of the material separating apparatus of Fig. 1:
Fig. 4 i8 a side elevational view illustrating the a pair of longitu~1n~11y ad~acent finger screen sections;
Fig. 5 i5 a top plan view of a single finger screen section: and Fig. 6 iR a pe~ective ViQW illustrating the relation~hip of a plurality of finger screen sectlons.
Detailed Description of the Pxeferred Embodi~ent Referring to the drawings, and first to Fig. 1, the reference numeral 10 designates generally a material separating apparatus in accordance with the pre~ent invent$on. The apparatus 10 includes a ~rouyh generally de~ignated 12 having a material input end as at 14 longitu~inAlly spaced from a material ~ hArge end as at 16 together with means for separating particles up to a pre~elected size from a material having particles of different sizes therein. In particular, the separnting means includes a plurallty of finger screen ~eans or sections 18 disposed between the input end 14 and the discharge end 16 along the longitu~nAl axis 20 of the ~ou~ll 12.
;~30~82~i Case '78 Referring spacifically to Figs. 4 through 6, the finger screen ~ections 18 eac:h include a backbone 22 ext~n~ ng from slde to sidQ acros~ the width of the trough 12 ( ee, also, Figs. 2 and 3). Each of the finger scr~Qn 5 sections 18 also includes forwardly ext~n~ng fingers 24 conn~cted at one end 24a to the }~cl~hone 22 and spaced side by side from each other by a preselected r L at forward ends 24b thereof sufficiQnt to allow particles up to the preselectQd size to pass through the finger~ 24. As shown, 10 the finger screen sQctions 18 alRo include a rearwardly ~p~nrling leg 26 connected a~ one end 26a to the back~one 22.
RQferring to Fig. 4, the finger screen sections 18 are arranged such that the forward ends 24b of the fingers 15 24 overlap the finger screen ~ection 18 ~ ~~iAtely forward thereof. It should ~e noted in this conn~ction that the forward ends 24b of the fingers 24 are vertically spaced above the next forwardly ad~acent finger screen ssction 18 by a distance egual to the presQlected amount of spacing 20 beL~ n thQ fingers 24. In this -nnP~, particles up to the preselected size will readily fall thluu~}~ the flnger screen sections 18 as the material mov~s from the input end 14 to the ~t~hArge end 16 of the l.~,uyll 12.
Referring to Figs. 1 and 2, the trough 12 i5 25 resiliently ~u~o~ed by meanR of a plurality of spring 28 which are disposed between spring slaf~ts as at 30 on the bottom of the trough 12 and a tl~hlll ~r fram2 ~l.L~ uLe generally de~ignated 32 which i~ 8~u~ed to a ~ Ling surface 33. In addition, the apparatus 10 include~ m~an~
30 for vibrating the trough 12 for agitating and movlng the material therealong. In this conn~ction, the vibrating means preferably includes a high frequency vibration genelhLor 34 mounted to the LLUUC~h 12 on a ~u~ ing frame Z~1~)78ZS
Ca~e 78 36 so as to impart vibrational force~ causing v~ment of the material along the longit~1 n~ 1 axis 20 from the input end 14 toward the c~#~h~rge end 16 of the l_~GUyh 12 .
As will be appreciatQd, the material will be 5 cu.,ve~,ed along the trough 12 and over succ~Five ones of the finger screen sections 18 as it moves from the input end 14 toward the discharge end 16. A6 tha material is cG.,~eyed therealong, particlas up to the pre~slQcted slze, i.e., the si2e which corrP~pond~ to the preselected spacing between 10 the forward ends 24b of the fingers 24 as well as the vertical spacing between the forward ends 24b of the finger6 24 and the next forwardly ad~ac~nt of the finger scraen sections 18, will fall through the finger screen 6ections 18 into at least one sloping ch~lte such as 38 provided for 15 purposes of collecting and co.,v~ying the f~ll ing particleB.
Ae shown, the sloping chute 38 i5 susp~n~le~ from below the t.~uuyh 12 to receive such particle~ and a particle conveyor such as 40 is provided below a ~9~h~rge end 38a of the chute 38 for ;n~lep~n~ertly conve~ing such particles to a 20 separate destination.
As will be appreciated by referring to Fig. 1, finger screen sections 18 are preferably provided in at least two longitu~l;nally adjacent screen regions Sl and S2 for separating the mater~al into at least two separate 25 batches of different sized particles. One of the batches i8 o~ substantially uniform smaller sized particles and the other of the batches is of substantially uniform larger sized particles. More specifically, the smaller sized particles are separated from the material at an up~eam 30 point, i.e., in screen region Sl, whereas the larger sized particles are separated from the material at a downstraam point, i.e., in screen region S2.
;~3C)78~:S
Ca~e 78 Wlth this arrangement, it i~ possible to sQparate particles up to at least two distinct pre~elected sizes from a material having particles of a variety of different sizes therein. In other words, the material wlll } e conveyed 5 along the L~ h 12 and ov~3r ~uc~ce~Qive onQs of the finger screen section~ 18. As thi~ occurs, all of the ~maller sized particles fall through the finger scraQn sectlons 18 in the u~L,eam scr~en region Sl while all of tha larger sized particles fall through the finger screen 6ections 18 10 in the downstream screen region S2.
With this arrangement, there will be 610ping chutes 38 and 42 ~ p~n~ed from below the L~u-~h 12 in longit~in~lly spaced relat$or~h~p for each of the scraen regions Sl and S2. The~e sloping chutes will receive 15 particles falling through the finger screen sections 18 in the re~pective screen region~ S1 and S2. Further, there will be separate particle cc,nv~yor~ 40 and 44 below h~rge end~ 38a and 42a for ln~pp~nr3arltly col,veying particles received from each of the chute~ 38 and 42 to 20 separate destinations.
Referring to Figs. 5 and 6, it will be seen that the fingers 24 are sp~ce~ from each other by a tapering amount defining a gap 46 diverging outwardly from the backbone 22 to the forward ends 24b thereof. It will al60 25 be appreciated by referring specifically to Fig. 6, and al80 Fig. 3, that the fingers 24 of any one of the finger screen sections 18 are laterally offset so as to be aligned with the gap 46 between a pair of the fingers 24 of the finger screen section 18 immedlately forward thereof. In other 30 word~, the fingers 24 of ad~acent ones of the finger screen sections 18 are staggered in a manner r:~ki ng it possible to eliminate material "bypass."
Z(~87~ S
Case 78 _ g _ A~ will be appreciated hy referring to Figs. 1 through 3, the finger screen sections 18 are each connected to and exclusively ~jul~o~Led by opposite sides 12a and 12b of the t.~uy}. 12. More ~pecifically, the finger screen 5 sections 18 are 80 cQnnected at opposite ends of the ba~khon~ 22 thereof. By 60 configuring and 6ecuring the finger screen sections 18, it i8 possible to avoid underdeck cross ~ G~Ls that might otherwise be capable of causing hang-ups.
As bQst shown in Fig. 4, the rearwardly ~1epPn~1ng leg 26 of each of the finger ~creen sections 18 extends rearwardly and downwardly relative to the backbone 22 which causes particle~ to be directed toward one of the particle receiving chutes 38 and 42. As also ~hown in Fig. 4, the 1S fingers 24 of each of the finger screen sections 18 extend forwardly and slightly upwardly relative to the backbone 22 of the finger screen section 18 1 ~ tely forward thereof.
With this arran.J- ~rl unique arra"~l -nt o~ finger ~creen ~ections 18, the present invention ha~ provided what 20 can be characterized as a "cA~c:~l; ng action finger-screen."
While not previou~ly mentioned, the forward ends 24b of ad~acent ones of the ~ingers 24 are spaced apart by an equal ~,L for all of the finger screen sections 18 in any one of the separate screen regions 6uch as Sl and S2 25 (see Fig~3. 1 and 6). The degree of separation, as previously mentioned, is the same as the vertical spacing beL~.ecn the forward ends 24b of the fingers 24 and the next forwardly adjacent one of the finger screen sections 18.
With this arrAn~- -nt, there are unobstructed openings to 30 allow "free fall" of the a~LopLiately sized particles as the material is c:o~ eyed from the input end 14 toward the ~chArge end 16 of the trough 12.
zoo7a~
Ca~e 78 -- 10 ~
Referring to Flg~. 1 and 3, the material separating appnratus 10 is parttc~lA~ly well suitQd for s~psrating plural sized part~cles into at least two batches of particlos. It will be appreciated that the plural ~ized s particles comprise a material to be classified by size. In this c~ Lion, one of the batche~ o~ particl~s wlll contain particles up to a first presQlectQd size and another of the batche~ of particles will contain partlcles up to a secon~l preselected 6iZQ~
wlth this underst~n~l~nq, the fingQrs 24 are spaced side by side from each other by a first (smaller) preselectQd amount at forward Qnds 24b of the first, u~L e~m screen r~gion Sl of finger screen sections 18 sufficient to allow particles up to the first pre~elected size to pass ~hrough the fingers 24 thereof. In l~ke f~hi ~n, th~ finqer8 24 are spacQd side by side from each other by a ~c~n~ tlarger) amount at forward ~nds 24b of the 8ecnnA r ~ - ~ ~ screen region S2 of finger screen sections 18 suf~c~Pnt to allow particles up to the ~econd preselected size to pass through the fingers 24 thereof.
As a result, the material having plural sized particl~s will be conv~yed along tha L~u~h and ov~r s~lcce~sive ones o~ the finger scrQen ~Gctions 18 with particles up to the first preselected size falling through the finger 6creen sections 18 of the first, u~,eam sCrQen section Sl, particles up to the seconA presalected ~ize falling through the ~econ~, dù~ Le~m screen region S2, and particles larger than the 6econd pre~slected s$ze be~ng ~ h~rged from the rli ~ch~rge end 16 o~ the ~,~u~h 12 onto a material COnve~ur 46 as the material moves from the input end 14 to the rl ~ cr~h~rge end 16 of the trough 12.
With this underst~nrling o~ thQ invention, the material separating apparatu~ is a non-h~n~ ng ~
~0~2s Ca~e 78 self-relieving design whlch stays clean wlthout "porcupining." The diverging g~ps betwsen fingers which gr~n~lly increasQ in width free on-siza pieces to allow the_ to drop through or continue to be cu-.ve~ed, and the design of the fingers provides a "c ; n~ action for longer pieces which will not completely pa86 through thereby avoiding wedging. Moreover, modular self-contained sectiûns are utilized for quick and easy replao~ , the apparatus can be custom built in a variety of 5iZe6 and ~aterial~, and multiple size particle sQparations can be accomplished on a single deck.
While in the foregoing there has bQen set forth a preferred ~-~o~iment of the invention, it will be understood that the details herein given are for p~oses of illustration only and the invention is to be limited solely by the spirit and scope of the appe~de~ claims.
Claims (21)
1. A material separating apparatus, comprising:
a trough having a material input end longitudinally spaced from a material discharge end and including means for separating particles up to a preselected size from a material having particles of different sizes therein; and means for resiliently supporting said trough relative to a supporting surface to permit vibratory movement of said trough and means for vibrating said trough for agitating and moving said material from said input end toward said discharge end;
said separating means including a plurality of longitudinally spaced finger screen means disposed between said input end and said discharge end and along the longitudinal axis of said trough, each of said finger screen means including a backbone extending from side to side across the width of said trough, each of said finger screen means also including forwardly extending fingers connected at one end to said backbone, said fingers being spaced side by side from each other by a preselected amount at forward ends thereof sufficient to allow particles up to said preselected size to pass through said fingers, said fingers of each of said finger screen means extending forwardly and slightly upwardly relative to said backbone of said finger screen means immediately forward thereof, each of said finger screen means also including a rearwardly depending leg connected at one end to said backbone, each of said finger screen means having said forward ends of said fingers overlapping said finger screen means immediately forward thereof, said forward ends of said fingers being vertically spaced above said finger screen means adjacent to and immediately forward thereof by a spacing equal to said preselected amount of spacing between adjacent ones of said finger screen means;
whereby said material having particles of different sizes will be conveyed along said trough and over successive ones of said finger screen means with particles up to said preselected size falling through said finger screen means as said material moves from said input end to said discharge end of said trough.
a trough having a material input end longitudinally spaced from a material discharge end and including means for separating particles up to a preselected size from a material having particles of different sizes therein; and means for resiliently supporting said trough relative to a supporting surface to permit vibratory movement of said trough and means for vibrating said trough for agitating and moving said material from said input end toward said discharge end;
said separating means including a plurality of longitudinally spaced finger screen means disposed between said input end and said discharge end and along the longitudinal axis of said trough, each of said finger screen means including a backbone extending from side to side across the width of said trough, each of said finger screen means also including forwardly extending fingers connected at one end to said backbone, said fingers being spaced side by side from each other by a preselected amount at forward ends thereof sufficient to allow particles up to said preselected size to pass through said fingers, said fingers of each of said finger screen means extending forwardly and slightly upwardly relative to said backbone of said finger screen means immediately forward thereof, each of said finger screen means also including a rearwardly depending leg connected at one end to said backbone, each of said finger screen means having said forward ends of said fingers overlapping said finger screen means immediately forward thereof, said forward ends of said fingers being vertically spaced above said finger screen means adjacent to and immediately forward thereof by a spacing equal to said preselected amount of spacing between adjacent ones of said finger screen means;
whereby said material having particles of different sizes will be conveyed along said trough and over successive ones of said finger screen means with particles up to said preselected size falling through said finger screen means as said material moves from said input end to said discharge end of said trough.
2. The material separating apparatus as defined in claim 1 including at least one sloping chute suspended from below said trough for receiving particles falling through said finger screen means.
3. The material separating apparatus as defined in claim 2 including a particle conveyor below a discharge end of said chute for independently conveying particles received from said chute to a separate destination.
4. The material separating apparatus as defined in claim 1 wherein said finger screen means includes at least two longitudinally adjacent screen regions for separating said material into at least two separate batches.
5. The material separating apparatus as defined in claim 4 wherein one of said batches is of substantially uniform smaller sized particles and the other of said batches is of substantially uniform larger sized particles.
6. The material separating apparatus as defined in claim 5 wherein said smaller sized particles are separated from said material upstream of where said larger sized particles are separated from said material.
7. The material separating apparatus as defined in claim 1 wherein said fingers of one of said finger screen means are laterally offset relative to said fingers of said finger screen means immediately forward thereof.
8. The material separating apparatus as defined in claim 1 wherein said finger screen means are each connected to and exclusively supported by said trough at opposite ends of said backbone thereof.
9. A material separating apparatus, comprising:
a trough having a material input end longitudinally spaced from a material discharge end and including means for separating particles up to at least two distinct preselected sizes from a material having particles of a variety of different sizes therein; and means for resiliently supporting said trough relative to a supporting surface to permit vibratory movement of said trough and means for vibrating said trough for agitating and moving said material from said input end toward said discharge end;
said separating means including a plurality of longitudinally spaced finger screen means disposed between said input end and said discharge end and along the longitudinal axis of said trough, each of said finger screen means also including a backbone extending from side to side across the width of said trough, each of said finger screen means also including forwardly extending fingers connected at one end to said backbone, each of said finger screen means being formed such that said fingers are all tapered to define gaps diverging outwardly from said backbone to said forward ends of said fingers where said gaps are a preselected amount sufficient to allow particles up to one of said preselected sizes to pass through said fingers, each of said finger screen means also including a rearwardly depending leg connected at one end to said backbone, each of said finger screen means having said forward ends of said fingers overlapping said finger screen means immediately forward thereof, said forward ends of said fingers being vertically spaced above said finger screen means immediately forward thereof by a distance equal to said preselected amount of spacing between adjacent fingers;
said finger screen means including at least two longitudinally adjacent screen regions for separating said material into at least two separate batches, one of said batches being of substantially uniform smaller sized particles and the other of said batches being of substantially uniform larger sized particles, said smaller sized particles being separated from said material upstream of where said larger particles are separated from said material;
whereby said material having particles of a variety of different sizes will be conveyed along said trough and over successive ones of said finger screen means with said smaller sized particles falling through an upstream one of said screen regions and said larger sized particles falling through a downstream one of said screen regions as said material moves from said input end to said discharge end of said trough.
a trough having a material input end longitudinally spaced from a material discharge end and including means for separating particles up to at least two distinct preselected sizes from a material having particles of a variety of different sizes therein; and means for resiliently supporting said trough relative to a supporting surface to permit vibratory movement of said trough and means for vibrating said trough for agitating and moving said material from said input end toward said discharge end;
said separating means including a plurality of longitudinally spaced finger screen means disposed between said input end and said discharge end and along the longitudinal axis of said trough, each of said finger screen means also including a backbone extending from side to side across the width of said trough, each of said finger screen means also including forwardly extending fingers connected at one end to said backbone, each of said finger screen means being formed such that said fingers are all tapered to define gaps diverging outwardly from said backbone to said forward ends of said fingers where said gaps are a preselected amount sufficient to allow particles up to one of said preselected sizes to pass through said fingers, each of said finger screen means also including a rearwardly depending leg connected at one end to said backbone, each of said finger screen means having said forward ends of said fingers overlapping said finger screen means immediately forward thereof, said forward ends of said fingers being vertically spaced above said finger screen means immediately forward thereof by a distance equal to said preselected amount of spacing between adjacent fingers;
said finger screen means including at least two longitudinally adjacent screen regions for separating said material into at least two separate batches, one of said batches being of substantially uniform smaller sized particles and the other of said batches being of substantially uniform larger sized particles, said smaller sized particles being separated from said material upstream of where said larger particles are separated from said material;
whereby said material having particles of a variety of different sizes will be conveyed along said trough and over successive ones of said finger screen means with said smaller sized particles falling through an upstream one of said screen regions and said larger sized particles falling through a downstream one of said screen regions as said material moves from said input end to said discharge end of said trough.
10. The material separating apparatus as defined in claim 9 including a sloping chute suspended from below said trough in longitudinally spaced relationship for each of said screen regions for receiving particles falling through each of said screen regions.
11. The material separating apparatus as defined in claim 10 including a separate particle conveyor below a discharge end of each of said chutes for independently conveying particles received from each of said chutes to a separate destination.
12. The material separating apparatus as defined in claim 9 wherein each of said fingers of any one of said finger screen means is laterally offset so as to be aligned with said gap between a pair of said fingers of said finger screen means immediately forward thereof.
13. The material separating apparatus as defined in claim 9 wherein said rearwardly depending leg of each of said finger screen means extends rearwardly and downwardly relative to said backbone to direct said particles toward a particle receiving chute.
14. The material separating apparatus as defined in claim 9 wherein said fingers of each of said finger screen means extend forwardly and slightly upwardly relative to said backbone of said finger screen means immediately forward thereof.
15. The material separating apparatus as defined in claim 9 wherein said forward ends of adjacent ones of said fingers are spaced apart by an equal amount for all of said finger screen means in any one of said separate screen regions.
16. A material separating apparatus, comprising:
a trough having a material input end longitudinally spaced from a material discharge end and including means for separating plural sized particles into at least two batches of particles, said plural sized particles comprising a material to be classified by size, one of said batches of particles containing particles up to a first preselected size and another of said batches of particles containing particles up to a second preselected size; and means for resiliently supporting said trough relative to a supporting surface to permit vibratory movement of said trough and means for vibrating said trough for agitating and moving said material from said input end toward said discharge end;
said separating means including a plurality of longitudinally spaced finger screen means disposed between said input end and said discharge end and along the longitudinal axis of said trough, each of said finger screen means including a backbone extending from side to side across the width of said trough, each of said finger screen means also including forwardly extending fingers connected at one end to said backbone, each of said finger screen means being formed such that said fingers are all tapered to define gaps diverging outwardly to a first preselected amount of spacing at forward ends of said fingers of a first, upstream screen region sufficient to allow particles up to said first preselected size to pass through said fingers thereof and by a second preselected amount of spacing at forward ends of said fingers of a second, downstream screen region sufficient to allow particles up to said second preselected size to pass through said fingers thereof, each of said finger screen means also including a rearwardly depending leg connected at one end to said backbone, each of said finger screen means having said forward ends of said fingers overlapping said finger screen means immediately forward thereof, said forward ends of said fingers being vertically spaced above said finger screen means immediately forward thereof by a distance equal to said preselected amount of spacing between adjacent fingers;
whereby said material having plural sized particles will be conveyed along said trough and over successive ones of said finger screen means with particles up to said first preselected size falling through said finger screen means of said first, upstream screen region, particles up to said second preselected size falling through said second, downstream screen region and particles larger than said second preselected size being discharged from said discharge end of said trough as said material moves from said input end to said discharge end of said trough.
a trough having a material input end longitudinally spaced from a material discharge end and including means for separating plural sized particles into at least two batches of particles, said plural sized particles comprising a material to be classified by size, one of said batches of particles containing particles up to a first preselected size and another of said batches of particles containing particles up to a second preselected size; and means for resiliently supporting said trough relative to a supporting surface to permit vibratory movement of said trough and means for vibrating said trough for agitating and moving said material from said input end toward said discharge end;
said separating means including a plurality of longitudinally spaced finger screen means disposed between said input end and said discharge end and along the longitudinal axis of said trough, each of said finger screen means including a backbone extending from side to side across the width of said trough, each of said finger screen means also including forwardly extending fingers connected at one end to said backbone, each of said finger screen means being formed such that said fingers are all tapered to define gaps diverging outwardly to a first preselected amount of spacing at forward ends of said fingers of a first, upstream screen region sufficient to allow particles up to said first preselected size to pass through said fingers thereof and by a second preselected amount of spacing at forward ends of said fingers of a second, downstream screen region sufficient to allow particles up to said second preselected size to pass through said fingers thereof, each of said finger screen means also including a rearwardly depending leg connected at one end to said backbone, each of said finger screen means having said forward ends of said fingers overlapping said finger screen means immediately forward thereof, said forward ends of said fingers being vertically spaced above said finger screen means immediately forward thereof by a distance equal to said preselected amount of spacing between adjacent fingers;
whereby said material having plural sized particles will be conveyed along said trough and over successive ones of said finger screen means with particles up to said first preselected size falling through said finger screen means of said first, upstream screen region, particles up to said second preselected size falling through said second, downstream screen region and particles larger than said second preselected size being discharged from said discharge end of said trough as said material moves from said input end to said discharge end of said trough.
17. The material separating apparatus as defined in claim 16 wherein said finger screen means arc each connected to and exclusively supported by said trough at opposite ends of said backbone thereof.
18. The material separating apparatus as defined in claim 16 including a sloping chute suspended from below said trough in longitudinally spaced relationship for each of said screen regions for receiving particles falling through said finger screen means.
19. The material separating apparatus as defined in claim 18 including a separate particle conveyor below a discharge end of each of said chutes for independently conveying particles received from each of said chutes to a separate destination.
20. The material separating apparatus as defined in claim 16 wherein each of said fingers of said finger screen means is laterally offset in alignment with a gap between a pair of said fingers of said finger screen means immediately forward thereof.
21. The material separating apparatus as defined in claim 16 wherein said fingers of each of said finger screen means extend forwardly and slightly upwardly relative to said backbone of said finger screen means immediately forward thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31746289A | 1989-03-01 | 1989-03-01 | |
| US317,462 | 1989-03-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2007825A1 CA2007825A1 (en) | 1990-09-01 |
| CA2007825C true CA2007825C (en) | 1999-04-20 |
Family
ID=23233768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2007825 Expired - Lifetime CA2007825C (en) | 1989-03-01 | 1990-01-16 | Material separating apparatus |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT398535B (en) |
| CA (1) | CA2007825C (en) |
| CH (1) | CH679378A5 (en) |
| DE (1) | DE4003544C2 (en) |
| GB (1) | GB2228692B (en) |
| NO (1) | NO175805C (en) |
| NZ (1) | NZ232192A (en) |
| SE (1) | SE505792C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0867234B1 (en) * | 1997-03-25 | 2002-07-17 | Somestra Industrie | Selective vibrating separator |
| GB9925417D0 (en) * | 1999-10-28 | 1999-12-29 | Powerscreen Int Plc | Improvements relating to screenboxes |
| SE529114C2 (en) * | 2005-12-13 | 2007-05-02 | Sandvik Intellectual Property | Viewing device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3385438A (en) * | 1966-02-10 | 1968-05-28 | Jacob M. Fisher | Grain chaffer |
| GB2085745B (en) * | 1980-10-20 | 1984-03-28 | Thule United Ltd | Vibratory screening apparatus |
| DE3407460C2 (en) * | 1984-02-29 | 1986-10-30 | Maschinenfabrik Bezner Gmbh & Co Kg, 7980 Ravensburg | Feeding device and screening device for the treatment of valuable materials |
| FR2633535B1 (en) * | 1988-06-29 | 1991-11-22 | Nord Sarl Reparmetal | SCREENING APPARATUS FOR PROCESSING ALL-COMING SUCH AS SHREDDED SCRAP |
-
1990
- 1990-01-16 CA CA 2007825 patent/CA2007825C/en not_active Expired - Lifetime
- 1990-01-19 GB GB9001292A patent/GB2228692B/en not_active Expired - Lifetime
- 1990-01-23 NZ NZ23219290A patent/NZ232192A/en unknown
- 1990-01-31 SE SE9000332A patent/SE505792C2/en unknown
- 1990-02-01 NO NO900472A patent/NO175805C/en unknown
- 1990-02-06 DE DE19904003544 patent/DE4003544C2/en not_active Expired - Lifetime
- 1990-02-15 AT AT35690A patent/AT398535B/en not_active IP Right Cessation
- 1990-02-19 CH CH51790A patent/CH679378A5/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2228692B (en) | 1992-09-23 |
| NZ232192A (en) | 1992-01-29 |
| NO175805C (en) | 1994-12-14 |
| DE4003544A1 (en) | 1990-09-06 |
| SE505792C2 (en) | 1997-10-13 |
| SE9000332D0 (en) | 1990-01-31 |
| SE9000332L (en) | 1990-09-02 |
| CA2007825A1 (en) | 1990-09-01 |
| CH679378A5 (en) | 1992-02-14 |
| NO900472D0 (en) | 1990-02-01 |
| ATA35690A (en) | 1994-05-15 |
| GB9001292D0 (en) | 1990-03-21 |
| NO175805B (en) | 1994-09-05 |
| AT398535B (en) | 1994-12-27 |
| GB2228692A (en) | 1990-09-05 |
| DE4003544C2 (en) | 2001-03-01 |
| NO900472L (en) | 1990-09-03 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKEX | Expiry |