US2133798A

US2133798A - Apparatus for distributing granular or pulverulent material

Info

Publication number: US2133798A
Application number: US58444A
Authority: US
Inventors: Joseph S Bennett
Original assignee: American Engineering Co Ltd
Current assignee: American Engineering Co Ltd
Priority date: 1936-01-10
Filing date: 1936-01-10
Publication date: 1938-10-18
Anticipated expiration: 1955-10-18

Description

1MAL

Oct. 18, 17938. J. s. BENNETT APPARATUS FOR DISTRIBUTING GRANULAR OR PULVERULENT MATE Filed Jan. l0, 1936 3 Sheets-Sheet l LAL Oct. 18,' 1938.

J. s. BENNETT APPARATUS FOR DISTIIBUTING GRANULAR OR PULVERULENT MATER Filed Jan. 10, 1936 Get. 18, `1938. J. s. BENNETT APPARATUS FOR DISTRIBUTING GRANULAR OR PULVERULENT MATERIAL 3 Sheets-Sheet- 3 Filed Jan. l0, 1936 Patented Oct. 18, 1938 i UNITED STATES APPARATUS FOR DISTRIBUTING GRANU- LAR OR PULVERULENTv MATERIAL Joseph S. Bennett, Merion, Pa., assignor to American Engineering Company, Philadelphia, Pa., a corporation of Pennsylvania Application January 10, 1936, Serial No. 58,444

8 Claims.

This invention relates to material distributing apparatus, and more particularly to apparatus for distributing granular or powderous materials among aplurality of feeding devices.

IN5 One object of the present inventionA is to provide generally improved distributing apparatus for granular or pulverulent materials.

Another object is to provide improved apparatus for evenly distributing fuel, such as coal, coke,

iz) and cinders, among a series of stoker feeding devices so that the fuel fed to the furnace Will be substantially uniform throughout.

Another object is to provide improved material chutes having compartments therein for receiving materials of different kinds, the chutes being so constructed as to evenly distribute materials vamong a series of receiving devices.

Other and further objects will become apparent as the description of the invention progresses.

Of the drawings:

Fig. 1 is a side elevational View of a stoker furnace showing one form of distributing means associated therewith.

Fig. 2 is a sectional elevational View of one of the stoker fuel feeding devices and the associated hopper, showing a portion of the distributing apparatus.

Fig. 3 is a front elevational view partly in section taken substantially along line 3--3 of Fig. 1. 30 Fig. 4 is a plan view of the apparatus shown in Fig. 3.

Fig. 5 is a front elevational view partly in section of an alternative construction.

Fig. 6 is a sectional view taken substantially 35 along line 6 6 of Fig. 5, and

Figs. 7, 8 and 9 are sectional views taken substantially along lines I-'I, 8 8, and 9 9 respectively, of Fig. 5.

Referring to the drawings, the numeral I desig- 40 nates generally, a furnace equipped in the present instance with a multiple retort, underfeed stoker 2. Stoker 2 comprises the usual alternately disposed retorts 3 and tuyre rows 4. Fuel is supplied to the stoker 2 from a hopper 5 disposed near the front end thereof, and a series of rams 5 operating in cylinders I feed predetermined amounts of the fuel gravitating into the cylinders from said hopper upon each reciprocation thereof. The bottom of each retort 3 comprises a series of fuel feeding pushers 8 which underfeed the fuel in the retorts in a well known manner. The rams 6 and pushers 8 are operated byany suitable power mechanism 9, they being operatively connected thereto by a link and lever mechanism indicated generally by the numeral li). Hopper is provided with a partition I E which divides the space therein in to two compartments I2 and I3, the former of which may receive coal or coke from a chute I4, while the CII latter may receive cinders or powderous fuel from spouts I5, as will appear more fully'hereinafter. Fig. 2 shows a ram 6 in its advanced position. Upon recession thereof, after a feeding operation, the fuel in compartment I3 will, first gravitate into the cylinder l, after which fuel from compartment I2 will enter said cylinder. As the ram is then actuated in the 4feeding direction the heavier materials gravitating in the cylinder from compartment I2 will be pushed over the lighter materials, as shown in Fig. 2. The lighter fuel, being thus covered by a layer of heavier fuel, will not be blown from the grates by the draft air, and as a result complete combustion of all of the fuel fed to the furnace is assured. Chutes I4 may be of the conical type shown and described in United States Patent No. 1,947,011, and each receives fuel from overhead bunkers (not shown) through a spout I6. By this construction the large and small particles of fuel gravitating into each chute are evenly distributed over the entire width of the discharge end thereof, and consequently each of the associated fuel feeding devices receives an equal quantity of fuel. e

The apparatus for distributing cinders or powderous fuel to compartment I3 of hopper 5 consists -of a receiving chamber I1 which receives materials from any suitable hopper (not shown) through a spout I8. Chamber I 'I comprises a frustro-conical casing I9 having a conical distributing member mounted therein in spaced relation with the walls thereof. Chamber II is therefore of substantially conical form, .having an annular -discharge opening at the lower end thereof. The upper ends of spouts I5 are secured to a flange 2| of casing I9 and communicate with the discharge end of chamber I 1. As shown more particularly in Figs. 3 and 4, the spouts I5 are so arranged that the, lower' or dischargey ends thereof enter the upper end of compartment I3 directly over the cylinders 'I. By this arrangement, it is seen that the fuel gravitating into chamber I'I is evenly kdistributed therein, vand as a result equal quantities of fuel will enter each of the spouts I5 and be discharged into compartment E3 of hopper 5 in such a manner that each ram 6 will feed an equal quantity of cinders or powderous fuel upon each reciprocation' thereof. 'Inasmuch as the chutes I4 communicating with compartments I2 also evenly distribute the heavier and lighter particles of fuel, among the cylinders 'l associated therewith, the fuel fed to each section of the stoker will be substantially uniform throughout.

Figs. 5 to 9 inclusive show an alternative construction for distributing materials of different kinds among each of a series of feeding devices. This construction comprises a chute 22 having downwardly inclined, substantially conical top and

bottom Walls

23 and 24 respectively, and

downwardly diverging side walls 25. A substantially conical partition 26 is mounted between top and

bottom walls

23 and 24 dividing the interior of chute 22 into compartments 21 and 28, the former of which may, in the present instance, receive cylinders or powderous fuel, while the latter, coal or coke. Top and

bottom walls

23 and 24, and partition 26 terminate at the-lower ends thereof in

vertical extensions

29, 30 and 3| respectively, forming with the end walls 32 vertical discharge passages 33 and 34 for compartments 21 and 28. Substantially cylindrical eX- tensions 35 and 36 are secured to the upper end of chute 22 in any suitable manner, forming inlet passages to compartments 21 and 28 respectively. The discharge passages 33 and 34 of chute 22 communicate respectively with the

compartments

31 and 38 of a hopper 39. The fuel supplied to hopper 39 gravitates into cylinders 40, and is fed to the furnace by the rams 4I operating therein, as previously described.

rI lhe top and

bottom walls

23 and 24, as well as partition 26 incline downwardly at an angle somewhat greater than the angle of repose, and by virtiie1 of the conical construction thereof the materials gravit'ating in'compartments 21 and 28 will be evenly distributed across the entire discharge end of the chute.

While the embodiments herein described are admirably adapted to fulfill the objects primarily stated, it is to be understood that the invention is not limited thereto, since it may be embodied in other forms, all coming within the scope of the claims which follow.

What is claimed is:

l. In a device of the class described, the combination of a chute comprising upper and lower walls of substantially conical form, and downwardly diverging side walls, a substantially conical partitiondisposed between said upper and lower walls dividing said chute into two compartments adapted to receive materials of different kinds, means dening inlet passages for each of said compartments, and extension means dening discharge passages for said compartments. Y 2. In a device of the class described, the combination of a chute comprising upper and lower walls of substantially conical form and downwardly diverging side walls, a substantially conical partition disposed between said upper and lower walls and in substantially parallel relation therewith dividing said chute into two compartments adapted to receive materials of different kinds, means dening inlet passages for each of said compartments, and extension means dening discharge passages for said compartments.

3. A chute for conveying granular or pulverulent materials comprising, upper and lower substantially conical walls, and diverging side walls, a partition disposed between said upper andlower walls dividing the chute into compartments, means defining inlet openings for each of said compartments, and substantially vertical eXtensions provided at the lower ends of said top and bottom walls 'and said partition, said extensions defining substantially vertical discharge'passages communicating with said compartments.

4. In a device of the class described, the combination of a chute having upper and lower walls of substantially conical form, and downwardly diverging side walls, means defining inlet passages for said chute, and substantially vertical extensions provided at the lower ends of said top and bottom walls defining a discharge passage for said chute, a second chute superimposed upon said irst mentioned chute, having an upper wall of substantially conical form spaced from the upper wall of said first mentioned chute, means dening an inlet opening for said second mentioned chute, and a substantially vertical extension provided at the lower end of the upper wall of said 'second .chute providing a substantially vertical discharge passage therefor.

5. In a device of the class described, the combination of a series of material receiving devices, means including an inclined member having downwardly diverging side edges for evenly distributing materials of one kind among all of said receiving devices, means connecting said distributing means with each of said receiving devices, means including a substantially conical member for evenly distributing materials of another kind among all of said receiving devices, and means connecting said last mentioned means with each of said receiving devices.

6. In a device of the class described, the combination of a series of material receiving devices, means including a conical member for evenly distributing materials of one kind among all of said receiving devices, means connecting said distributing means with each of said receiving devices, means including a conical member superimposed upon said distributing means for evenly distributing materials of another kind among all of said receiving devices, and means connecting said last mentioned means with each of said receiving devices.

7. In a device of the class described, the combination with a series of material receiving devices, of apparatus for evenlydistributing materials of different kinds among all of said receiving devices, said apparatus comprising an inclined chute provided with a distributing member having downwardly diverging side edges for distributing materials of one kind among all of said receiving devices, a second means for distributing rmaterials of another kind among all of said receiving devices, said last mentioned means including a chamber having a substantially conical member provided therein, said chamber having'inlet and discharge openings provided therein, and spouts connecting said discharge openings with said receiving devices.

8. In a device of the class described, the combination with a series of material receiving devices, of apparatus for evenly distributing material of different kinds among all of said receiving devices, said apparatus comprising an inclined chute provided with a distributing element having downwardly diverging side edges for distributing materials of one kind among said receiving devices, means dening inlet and discharge openings for said chute, means connecting the discharge openings of said chute with said receiving devices, a second device for distributing materials of another kind among all of said receiving devices, said means comprising a chamber having a substantially conical member provided therein, means defining inlet and discharge openings for said chamber, and a series of spouts connecting said discharge openings with said receiving ldevices.

JOSEPH S. BENNETT.