US1384175A - Twin gate for hoppers - Google Patents

Description

F. B. ALLEN AND M. C. SHERMAN.

TWIN GATE FOR HOYPPERS. AFPLICATLON FILED JULY H1919.

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F. B. ALLENANDM. c. SHERMAN.

TWIN GATE FOR HOPIERS,A

APPLICATION FILED JULY 7, 1919.

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2 SHEETS-SHEET 2- IINVEN'TOIR UIJII'ITN ESSES UNllTEE STATES PATENT FRANK BJLLEN', 0F BEN AVON, AND MAX C. SHERMAN', 0F PHLAD/ELPHEA, 'PENN- 'SYLVANXA,. .l-MSSIHXIORS TO BAKER-DUNBAR-ALLEN COMPANY, 01E' CLEVELAND,

03H10, A CORPRATION 0F OHIO.

TWIN GATE FOR HOPIPERS.

To all 'whom t mary concem.'

Be it known that we, FRANK B. ALLEN, a

\ resident of Ben Avon, county of Allegheny,

ldent of Philadelphia, in the county of Phila- `delphia and Stateof Penns lvania, have invented a new and useful )mprovement in Twin Gates for Hoppers, of which the following is a specification.

rlhis invention relates to apparatus for handling loose or granular material and more particularly for storing it and discharging it from time to time. rPhe invention is especially adapted for handling ashes from boiler or like furnaces, and in the drawings it is illustrated as adapted for that use.

The object ofthe invention is to provide means for storingthe loose material and discharging the same from timeto time to transporting devices and particularly from two storage hoppers located in proximity, with the discharging means so arranged as to occupy a minimum amount of space, be easy of operation, tightly seal the storage hoppers, and with the wearing parts protected from the granular material to prevent rapid Wear and clogging.

In the accompanymg drawings Figure lis in part a central vertical longitudinal ysection through and in part a side view of portions of the hoppers, with the gates for closing the same; Fig. 2 shows transverse vertical sections of different portions thereof; and Figs. 3 and 4 respectively plan and sectional views showing another form of gate operating means.

rlhe hoppers or bins for storing the loose ,or granular material as illustrated are typical of ash hoppers, such as used underneath the grates of boiler furnaces in large power plants, the same comprisinsuitablermetal casings 2 lined with fire brick or otherrefractory metal 3 to protectthe metal casing from the heat of the ashes, and which hoppers are supported in any suitable way. The lower end of each hopper is provided with a discharge orifice and with an inwardly projecting flange or ledge 5 for supporting the refractory lining and also with anexternal flange 6. 7 represents a casting or frame Specification of Letters Patent.

Patented Tully t2, 11921.

Application filed July 7, 1919. Serial No. 309,231.

surrounding the discharge opening and`provided with refractory lining and'with external flanges at top and bottom, the former serving to bolt the same to theflanges 6 of thecasing 2. Underneath the hopper is aframe 8, in the form of a casting, provided with the discharge opening 9, and bolted or otherwise secured to the bottom securing flanges of the casting 7. rlhis casting is provided on opposite sides of the discharge oriiice With depending webs J11 which at their lower edges are provided with outwardly projecting anges or ledges 13 which form supports for the tracks or ways for the gate or valve hereinafter described.

rlhe frames 8 at the bottom of both hoppers are located on the same level and the .horizontal flanges or ledges 13 ofthe two\ hoppers are connected bytrack members 14, which `are shown as sections of commercial angle bars having their legs at the end portions split at the angle and one thereof bent downwardlyand the other bent laterally, as shown at 15 and 16, and secured by means of bolts 17 to dependingflanges 18 on the adjacent ends ofthe frames` 8. The flanges orledges 13 are connected at intervals to the upper Harige of theframes 8 by -means ofstruts 29, to give strength, but for the major portions of the lengths of theledges 13 the upper surfaces' thereof are open to and accessible from the outside.

l Each gate or valve comprises a rectangular casting 20 lined withfire brick or other refractory material 21, and at their ends are provided withbosses 22 which are provided with openings transverse to the axis of movement of the gates for receiving the inner ends of thewheel journals 24 which eX- tend outwardly throughslots 25 in thewebs 11 of-theframe 8 and at their outer ends receive the carrying wheels- 26. rlhese journals are fastened in thebosses 22 by means lof a shoulder near their outer ends and a nut 27 on their inner ends and the wheels 2G are rotatably secured on the journals by means ofnuts 28 and cotters as is shown.

These wheels run upon track or lwear members 30 supported on the flanges or ledges 13. The topsurface/ of these track members 30 are in the same horizontal plane as the top of the connectingtrack members 14. The track members 30 are separate from the ledges orlianges 13 in order that they may be renewed when worn, and also for the purpose of adjustment; in order to com ensate for any inequalities in the casting of the frame and in o'rder to secure a tight closure of the gate against the lower face of the frame surrounding the discharge orifice. To this end said track members are supported byshims 31 by means of which said track members can be-built up to any desired height and portions thereof are also vertically adjustable by means of setscrews 32 extending up through threaded openings in thelianges 13. Counter-sunkbolts 33 serve to hold the tracks in position. bring the .j track members 14 into exact level with the tracks 30 the holes for thebolts 18 aresomewhat elongated, as shown in Fig. 2, thus permitting said track members to be adusted vertically.

he gates are arranged to make a tight seal with the lower face of theframe 8 and the ends of theframe 8 at the side of the discharge orifice are provided withflat faces 34 slightly inclined from one end to the other and which are adapted to be contacted by the flatupper faces 35 on the sides of the gates,so that as the gates move to nal closed position thefaces 34 and 35 come together with a wedgin action. If when oing to closed position 1t should be found t at one or more of therollers 26 is not in contact with its track, theproper screw 32 is turned upwardly until'contact is secured,

and the tracks are thensleft in that position which will insure the gates maln'ng a tight closurepwith the discharge orifice,

These gates can be reciprocated b any suitable mechanism. As shown in igs. l and 2 each gate has bolted to its lower face along its centrally longitudinal axis, arack bar 36 engaged by apinion 37 on thetransverse shaft 38 lmounted inbearings 39 secured by means of tap bolts 40, or the like, to the bottom faces of theflanges 13 on theframe 8 near the adjacent ends of said.

* frames. Theshafts 38 can be driven by anyl suitable reversing mechanism not .necessary to show. l

Figs. 3 and 4-shcw afmodiied means for alternately reciprocating the gates. This means comprises apower cylinder 42 which is supported underneath and centrally be\ tween the two hoppers, such as suspending the same from a member 43 bolted to the connectingtrack members 14. This cylin-.f

'. der is provided with two pistons 44 and 44* connected respectively bypiston rods 45 and.' 45* to.arms 46 and 46 projecting downwardly from the outer ends ofthe gates.Fluid pressure connections 47 and 48 and 47 t and 48 are made to each end of thecylinder 42, and brought to four-way valves 49`and 49, 'which valves will be located at an convenient place for manual and indepen closed,.in which position the two pistons 44 and 44a are at the opposite ends of thecylinder 42. By admittlng fluid pressure bef tween either piston and its cylinder head, through the 'connection 47 or 47,- the particular gate to which that piston is connected will be moved onto the connectingtrack members 14, and by admitting fluid pressure into the cylinder near its opposite end through the same four-wayvalve, through the connection 48 or 48a, the piston will be moved in the opposite direction and close the gate. f Since each piston can be moved independently of the other, it is possible to open either gate at will, but only one gate at a time.

Preferably theinlet pipes 47, 47a at each end of the cylinder have two branches, as shown, with acheck valve 53 in the branch opening'- into the cylinder nearest its end, that air may be trapped in the end of the cylinder to'prevent the piston from ham- -mering against the cylinder head when closing the gate. n the operation of the twin arrangement lllustrated the gates' will be opened one at a time by rotating theproper shaft 38, of Fig.

itsshaft 38, or actuating its piston, alsol vent operation. Fig. 4 shows both gates v rolling it out upon the connectingtrack members 14. Consequentlx7 themembers 14 serve as track extensions for the flanges or ledges 13`of both hoppers, with a consequent reduction of spaceand a reduction inl the los amount of metal necessary, and forming a more compact mechanism.

The construction is such that therollers 26 are .accessible from the outside, therefore being easy to inspect, lubricate, and repair if necessary. These rollers and the wear members-on which they run are largely rotected fromthe material being handle as little or none of it will nd its way through theslots 25 through which the wheel journal members project. The wear members on which the rollers run are adjustable to secure a tight closure of the gates and to compensate for wear, and furthermore can be readily renewed in case of excessive wear.

We claim: J

1. Apparatus of the character described, in combination with a pair of adjacent hoppers havmg bottom discharge o enings, of horizontal ways at opposite si es of said discharge. openings, track members connecting the horizontal ways ofi-the two hoppers,

maarre a horizontally movable gate for each of said hoppers supported on said ways, and means for moving said gates in opposite directions, whereby each of. said gates in openng moves onto said connecting track memers.

2. Apparatus of the character described, in combination with a pair of adjacent hoppers each having a bottom discharge opening, of horizontal ways at opposite sides of said discharge openings, intermediate connecting track members in line with said ways, a horizontally movable gate for each hopper provided with laterally extending means including rollers traveling on said ways, and means for moving said gates in opposite directions, whereby each of said gates in opening moves onto the connecting track members.

3. Apparatus of the character described, comprising a pair of adjacent hoppers each provided with a bottom discharge opening, ways at opposite sides of each discharge opening, horizontally movable gates provided with laterally projecting journals, rollers on the outer ends of said journals, vertically adjustable wear members on said ways and on which said rollers travel, connecting track members secured to the adjacent ends or the ways of the two hoppers by means permitting vvertical adjustmentl thereof and means for moving said gates in opposite directions, whereby each of said gates in opening moves onto said connecting track members.

A. Apparatus of the character described, in combination with a hopper having a bottom discharge opening, of stationary frame members provided on opposite sides of the discharge opening with bottom seating faces, said frame members being provided outside of said seating faces with depending webs provided with longitudinal slots and withA FRANK B. ALLEN. MAX c. SHERMAN.

Witness as to F rank B. Allen: ,f lEmzABErIHf C. Rrrz. Witness as to Max C. Sherman:

dos. W. MILLS.

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