US2329900A - Air separator - Google Patents

Description

Sept. 21, 1943.

C. E. HERMANN AIR SEPARATOR Filed Aug. 26, 1942 3 sheets sheet 1 Sept 1943 c. E. HERMANN' 2,329,900

AIR SEPARATOR Filed Aug. 26, 1942 Sheets-Sheet 2 liwem ar' Mar/g: fdward/ferma/z/f Sept. 21, 1943. c. E. HERMANN 2,329,900

AIR SEPARATOR Filed Aug. 26, 1942 3 Sheets-Sheet 3 UNITED STATE-S PATENT OFFICE AIR sarannron Charles Edward Hermann, St. Louis, Mo. Application August 26, 1942, Serial No. 456,452

15 Claims. (Cl. 209-139) This invention relates to new and useful improvements in air separators.

-Among the main objects of the invention are the provision of an air separator having periphve'ntion consists in certain novel features of construction and arrangement of parts hereinafter more fully described andclai'med; and illustrated in the accompanying drawings, in whicheral air inlets adjacent to the bottom of the Figure 1 is a vertical cross section through classification chambers, and an air and fine mamy improved air separator. v terial outlet in the upper end of said chamber, Figure 2 is a, horizontal cross section taken the material to be classified being fed into said on line 2-2 of Figure 1. v chamber onto a rotating spreader plate disposed Figure 3 is a horizontal cross section taken in said chamber intermediate said inlet and said '10 on line 3-3 of gure 1. outlet, there being a coarse material discharge Figure 4 is a detail cross section taken on line opening formed in the bottom of said chamber 4-4 of Figure 1. and a plurality of agitators operating over said Figure 5 shows a modified form of separator bottom to bringthe material into the path of having a stationary spreader member. air currents issuing from said inlets and moving Referring by numerals to the accompanying the coarse material toward said discharge opendrawings, Ill indicates a separator having a cylining. drical wall H, a bottom wall I2, and a top wall Another object of the invention is the provision I3. The latter is preferably cone-shaped and of an air separator of the class described having terminates in an upward axial extension or cona rotating horizontally disposed spreader disk for duit l4 which forms an outlet for air and fine receiving the material to be classified, a series of material from the classification or separation rotating arms disposed below said disk and exchamber l5.

tending radially outward from the axis of rota An enlargement IS on the lower end of separation, and another series of stationary arms distor in forms an air or mud box which communiposed in a spaced relation with the-horizontal cates with chamber l5 through a plurality of 'plane or planes of .said rotating arms and. in inlets H which are arranged peripherally around overlapping relation therewith, whereby the mathe lower end of said casing iii. terial dischargedfrom said disk is subjected to A tangential extension I8 is formed on air the action of said rotating and stationary arms. box It and is adapted to be connected to a suit- Other objects of the invention are to provide able airreturn pipe l9 of the classification sysan air separator having peripherally disposed air tem. inlets adjacent to the bottom of the classifica- A vertically disposed bearing 20 is fixed to the tion chamber, an axial air and fine material bottom wall l2 and journaled in said bearing is outlet in the upper end thereof, and a material a vertically disposed shaft 2!. The lower end of agitating assembly revolubly mounted in said this shaft is actuated in any suitable manner. chamber coaxially therewith, said assembly com- The upper end has fixed thereon a, rotating asprising a horizontal spreader disk adapted to sembly 22. This assembly consists of a lower receive the material to be classified, and a. plurotating member 23 and an upper rotating memrality of arms extending radially outward, and her 24. one or more scoops or plows operating over the The lower member 23 encloses the upp end bottom of said chamber and in the horizontal of shaft 2| and has a horizontally disposed anplane of said air inlets, there being a discharge 'nular disk or flange 25 arranged adjacent to opening formed in said bottom through which bottom wall l2. One or more vertically and the reject material is discharged by said plows radially disposed flanges 26 are formed integral as they operate over said bottom. with member 23 and flange 26 and fixed to each Another object of the invention is to provide flange 26 is a. plow or agitator 21. an air separator having a plurality of air inlets The upper member 24 is in the form of a verdis'posed peripherally near the lower end theretically disposed drum 28 having the lower end of and having an air and line material outlet fixed to shaft 2| and having the upper end proat the upper end-and a sleeve arranged in slid; vided with a horizontally disposed spreader disk ing engagement with the peripheral casing of said 29 which extends a suitable distance past said separator adjacent to said inlets and adjustable drum. on said peripheral wall to regulate the size of Fixed to the drum 28 and extending radially said inlets. outward therefrom are arms 3|! arranged in one With these and other objects in view, my in-' or more peripheral rows.

spreader disk 29 through a conduit 32 extending into the separator it) through top wall and having its lower end 33 disposed coaxially with said separator and terminating a suitable distance above said disk 29. A telescopic joint 34 in conduit 32 permits adjustment of said end 33 relatively to disk 29. The outer end of conduit 82 is connected to the discharge end of a mechanical feeder 38, the inlet end of which has connected thereto a material delivery pipe 31.

The reject or coarse material is deposited on bottom i2 and is removed therefrom through a discharge opening 38 formed in said bottom near the inlets i 1. A collection chamber or conduit 39 is attached to bottom I2 and receives the reject material discharged through opening 38. A

flap gate 40 closes the lower end of member 39.

Adjustably mounted in the lower end of separator casing II is a sleeve 4| which is movable vertically to reduce the openings connecting the inlet H with chamber l5. The sleeve is held in adjusted position by a plurality of horizontally disposed bolts 42 seated in casing II and each engaging one of several holes 43 arranged in a vertical row in sleeve 4 I.

By adjusting sleeve 4|, the size of the openings of inlets l I can be varied and the flow of air from box 16 to chamber l regulated. The inlets I! are curved in the direction of the incoming air and preferably open radially into said chamber l8 (see Fig. 2). The walls l'la of the adjacent inlets converge and form a sharp point 11b to reduce air resistance to a minimum.

In the modified form shown in Figure 5, a spreader member 44 is held stationary in chamber 15 by rods 45 fixed to casing II). This spreader member is of an inverted cone-shape and the material discharged thereon is spread downwardly in said casing.

The air separator of my improved construction has a closed casing provided with a suction outlet at the upper end and air inlets at the lower end. The air inlets are streamlined and are contained in a wind or air box which has a tangentially disposed air inlet port. 7

The material'is fed into the separator by a feed pipe which is located above a material spreader member. The latter discharges the material into the space between the casing well and the rim of the spreader disk. The rising air stream picks up the fine material, while the coarser material drops and is agitated by the plows 21. Coarse or reject material collects on the bottom l2 and is discharged therefrom through the throw-out opening 38.

My improved air separator is simple in operation and provides accurate and efficient classification of material.

While I have shown and described herein the preferred form of my invention, various changes in the construction and arrangement thereof can be made without departing from the spirit of my invention.

I claim:

1. In an air separator, the combination of a separator casing, an air outlet extending axially from the upper end thereof, a peripheral air box surrounding the lower end of said casing, a plurality of inlets connecting said air box with the interior of said casing, a vertically disposed shaft revolubly mounted in the bottom of said casing, and extending thereinto, a drum fixed to the upper end of said shaft, a horizontally disposed spreader disk fixed to the upper end of said drum, a material delivery pipe extending downwardly into said casing and terminating above said disk, whereby the material to be classified is discharged onto said disk, a plurality of rotating arms fixed to said drum and extending radially outward, a plurality of stationary arms fixed to said casing and extending radially inward in spaced relation with said rotating arms, whereby said rotating and stationary arms cooperate to separate coarse particles from fine material, an outlet for coarse particles arranged in the bottom of said casing, and a plurality of plows fixed to said shaft below said drum and operating over said bottom for moving said coarse particles to said outlet.

2. In an air separator, the combination of a separator casing, an air and fine material outlet extending axially from the upper end thereof, a peripheral air inlet box surrounding the lower end of said casing, a plurality of inlets connecting said air box with the interior of said casing. a vertically disposed shaft revolubly mounted in the lower end of said casing, a drum fixed to the upper end of said shaft, 9. horizontally disposed spreader disk fixed to the upper end of said drum, a material delivery pipe extending obliquely downward into said casing and terminating above said spreader disk for delivering material thereonto, a plurality of rotating radial arms fixed to said drum, a plurality of stationary arms fixed to said casing and extending inward in spaced relation with said rotating arms, whereby coarse particles of material are defiected downwardly by said stationary and rotating arms, a discharge for said coarse particles formed in the bottom of said casing near the outer periphery thereof, a receiver for said reject material connected to said discharge, and a plurality of vanes secured to said shaft below said drum for agitating the material adjacent to said air inlets and moving the reject material toward said discharge opening.

3. In an air separator, the combination of a separator casing, an air and fine material outlet extending axially from the upper end thereof, an air inlet box peripherally enclosing the lower end of said casing, a plurality of inlets connecting said air box with the interior of said casing, a vertically disposed bearing fixed to the bottom of said casing, a revoluble shaft journaled in said bearing and extending into said casing, a rotating assembly fixed on said shaft in said casing and comprising an upper member and lower member, a horizontally disposed spreader disk fixed to said upper rotating member, a material delivery pipe extending downward into said casing and terminating above said disk for discharging material thereinto, a reject material discharge disposedin the bottom of said casing adjacent to said inlets, and a plurality of vanes fixed to said lower rotating member and agitating the material past said inlets and sweeping the rejectmaterial on said bottom toward said discharge.

casing, a reject material discharge formed inthe bottom of said casing near the outer periphery thereof, an air inlet box enclosing the lower end of said casing, a plurality of inlets connecting said air box with the lower end of said casing. a vertically disposed rotating assembly journaled in the lower end of said casing and comprising a lower rotating member and an upper rotating member, a horizontally disposed spreader disk on said upper rotatin'g member, a material feed conduit extending downward into said casing and terminatingabove said disk for discharging material thereonto, and a plumks...

3 member, a horizontally disposed spreader diskonsaid upper rotating member. a material feed conduit extending downward into said casing and terminating above said disk for discharging material thereonto. a plurality of vertically andv radially disposed flanges fixed on said lower rotating member, a vane fixed to each flange for agitating the material in said casing and moving the reject material on the bottom thereof to said discharge, a receptacle fixed to said casing bottom below said discharge for receiving the reject material, and a closure member for said receptacle for. permitting removal of said reject materality of agitator vanes carried by the lower rotating member and operating across said inlets to agitate the material over the bottom of said casing for moving the reject material to said discharge.

' 5. In an air separator, the combination of a separator casing, an air and fine material outlet extending axially from the upper end of said casing, a reject material discharge formed in the bottom of said casing near the outer periphery thereof, an air inlet box enclosing the lower end of said casing, a plurality of inlets connecting said air box with the lower end of said casing,

a vertically disposed rotating assembly journaled in the lower end of said casing and comprising a lower rotating member and an upper, rotating member, a horizontally disposed spreader disk on said upper rotating member, a material feed conduit extending downward into said casing and terminating above said disk for discharging material thereonto, a plurality of agitator vanes carried by the lower rotating member and operating across said inlets to agitate the material over the bottom of said casing for moving the reject materialto said discharge, and a receptacle below said discharge for receiving said reject material.

6. In an air separator, the combination of a separator casing, an air and fine material outlet extending axially from the upper end of said casing, a reject-material discharge formed in the bottom of said casing near the outer periphery thereof, an air inlet box enclosing the lower end of said casing, a plurality of inlets connect ing said air box with the lower end of said casing,

a vertically disposed rotating assembly journaled in the lower end of said casing and comprising a lower rotating member and an upper rotating member, a horizontally disposed spreader disk on said upper rotating member, a material feed conduit extending downward into said casing and terminating above said disk for discharging material thereonto, a plurality of vertically and radially disposed flanges fixed on said lower rotating member, and a vane fixed to each flange for agitating the material in said casing and moving the reject material'on the bottom thereof to said discharge.

7. In an air separator, the combination of a separator casing, an air and fine material outlet extending'axially from the upper end of said casing, a reject material discharge formed in the bottom of said casing near the outer periphery thereof, an air inlet box enclosing the lower end of said casing, a plurality of inlets connecting said air box with the-lower end of said casing, a vertically disposed rotating assembly journaled in the lower end of said casing and comprising a lower rotating member and an upper rotating rial from said receptacle.

separator casing, an air and fine material outlet extending axially from the upper end of said casing, an air inlet box enclosing the lower end of said casing, a. plurality of air inlets arranged in said air box peripherally of said casing and opening thereinto, a sleeve slidably mounted in said casing above said inlets and adjustable downwardly to reduce the size of said'inlet openings, a reject material dlscharge'formed in the bottom of said casing, a vertically disposed revoluble member in said casing, a material delivery conduit extending into said casing, and means fixed to said revoluble member and operating over said casing bottom for movingthe reject material to said discharge.

9. In an air separator, the combination of a separator casing, an air and fine material outlet extending axially from the upper end of said casing, an air inlet box enclosing the lower end of said casing, a plurality of air inlets arranged in said box peripherally of said casing and opening thereinto, a sleeve slidably mounted in said casing above said inlets and adjustable partially to close said inlets, means for securing said sleeve in adjusted position, a reject material discharge formed in the bottom of said casing, and means rotatably mounted in said casing'and operable over the bottom thereof for moving the reject material toward said discharge opening.

10. In an air separator, the combination of a separator casing, an air and fine material'outlet extending, axially from the upper end of said casing, an air inlet box enclosing the lower end of said casing, a plurality of air inlets arranged in said box peripherally of said casing and opening thereinto, a sleeve slidably. mounted in said casing above said inlets and adjustable partially to close said inlets, means for securing said sleeve in adjusted position, a reject material discharge formed in the bottom or said. casing, means rotatably mounted in said casing and operable over the bottom thereof for moving the reject material toward said discharge opening, and a normally closed receptacle secured to the bottom of said casing below said discharge for receiving the reject material.

11. In an air separator, the combination of a separato'r'casing, a suction air outlet extending axially from the upper end thereof, an air box surrounding the lower end of said casing, a plurality of inlets connecting said air box with said casing, a spreader member disposed in said casing above said inlets, means for discharging material to be classified onto said spreader member, a plurality of rotating plows operating over the bottom of said casing for agitating the material and moving the reject material collected in said bottom, said bottom being formed with a throwout opening, and a receptacle connected in said throw-out opening for receiving said reject material.

separator casing, a suction air outlet extending axially from the upper end thereof, an air box surrounding the lower end of said casing, a plurality of inlets connecting said air box with said casing, a spreader member disposed in said casing above said inlets, means for discharging material to be classified onto said spreading member, a plurality of rotating plows operatin over the bottom of said casing for agitating the material and moving the reject'material collected in said bottom, said bottom being formed with a throwout opening, a receptacle connected to said throwout opening for receiving said reject material, and a fiat gate for closing said receptacle for automatically discharging said reject material from said receptacle.

13. In an air separator, the combination of a casing, a suction air and fine material outlet in the upper end thereof, an air box surrounding the lower end of said casing, a plurality of inlets in said air box opening radially inward into said casing, a spreader member disposed in said casing above said inlets, means for discharging the material onto said spreader member, agitating means operating in the lower end of said casing for mixing the material discharged from the spreader member with the air currents from said inlets, a throw opening in the bottom of said casing, and a receptacle connected to said opening for receiving the reject material thrown out through said opening.

12. In an air separator, the combination of a 14. In an air separator, the combination oi a casing, a suction air and fine material outlet in the upper end thereof, an air box surroundins the lower end 01 said casing, a plurality oi inlets in said air box opening radially inward into said casing, a spreader member disposed in said casing above said inlets, means for discharging the material onto said spreader member, agitating means operating inthe lower end 01 said casing for the material discharged from the spreader member with the air currents from said inlets, a throw-out opening in the bottom of said casing, a receptacle connected to said opening for receiving the reject material thrown out through said opening, and a closure member in said receptacle for automatically discharging the reject material therefrom.

15. In an air separator, the combination of a casing, a suction air and fine material outlet in the upper end thereof, an air box surrounding the lower end of said casing, a plurality of inlets in said air box connecting said box with said casing, a spreader member disposed in said casing above said inlets, means for discharging the material onto said spreader member, agitating means in the lower end of said casing for mixing the material discharged from said spreader member with the air currents issuing from said air inlets. and a throw-out opening in the bottom of said casing for discharging therefrom the reject material.

CHARLES EDWARD HERMANN.

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