US1375643A - Feeding apparatus - Google Patents

Description

L. B. SKINNER.

FEEDING APPARATUS.

APPLicATmN FILED Fas. 19, m2o.

Emme@ kpn l?, i921@ 2 SHEETS-SHEET l.

, Ms' www FEEDING APPARAYUS. APPUCATION FILED FEB. 19, 1920.

2 SHEETS-SHEET 2.

j@ l N.

l1/talento@ armted Apr. 19, 192i. l

2T axially against its seat at all times. lt is desirable to provide means for this purpose ulrich will produce a constant endwise thrust on the stem 3e and valve 27 and to obtain such action .i preferably provide a yielding means acting on the free end of the leven riccordingly, in the constiaiction illustrated, the shank d5 is pivotally conne .l to u forked spring bolt 4S) by a bolt 5l), which passes through the shank i5 and the forked portion of the bolt a9. llhe shank of the bolt i9 is threaded as at 5i, to carrv a uut 52, which bears against a washer the bolt Alfil, and at one end bears against the washer and at its opposite end against a bracket 55, that is riveted or otherwise secured to the channel 30.

rlhe described arrangement of parts operates to draw the free end of lever L to the right, thereby constantly pressing the rotatingtapered valve plug` against its seat, and causing it to wear itself to a new liquidtight seat, as fast as the rubbing surfaces are corroded by the acid.

Vhe operation of the system is sufficiently obvious from the foregoing description. Normally the rotary valve feeder is driven continuoi'lsly at the proper speed to supply acid to the furnace pan or hearth at the required rate, the salt feeder (not shown) being driven at a predetermined speed relation to the acid feeder, as already explained, to insure delivery of both re agents to the furnace in correct relative proportions. if conditions arise which make it necessaryto supplement the supply of acid afforded by the rotary valve feeder, the cut-olf valve 16 may be opened to permit acid to flow through the l,oy-passD Or, if required, the rotary acid feeder may be .it out entirely by suitably disconnecting it from the driving means, the valve'being so formed as to cut off the flow of acid when y not rotating.

lWhile l have shown and described my improved feeding apparatus in detail, it is to be understood that various features thereof may be modified without departing from the scope of the invention.

ji. suitable spring 54 surrounds.

havinga valve seat therein, a tapering valve plug fitting said seat, which is supported from said frame-work, said valve plug having recesses in its outer surface for feeding predetermined quantities of material through said conduit, means also supported from said frame-work for continuously rotating said valve plug, and means also supported from said frame-work ror constantly pressing rotation thereof.

3. Feeding apparatus comprising a conduit having a valve seat therein, a rotatable valve plug fitting said seat and adapted upon rotation to feed material through said conduit, a stem for said valve plug, driving means connected thereto, and means, including` a lever, operativelyconnected to such valve stem but permitting rotation thereof and arranged to press said valve to its seat.

li. Feeding apparatus comprising a conduit having a valve seat. therein, a rotatable valve plug fitting said seat and so formed that upon rotation it will feed material through said conduit, a stem fast with said valve plug, a bea-ring for said stem, a driving member on said stem, and means, including a resiliently actuated lever, operatively connected to said stem and arranged to exert a longitudinal thrust thereon, thereby to yieldingly press said valve plug to its seat while permittingrotation thereof.

5. Feeding apparatus comprising a supporting frame work, a valve casing mounted thereon and provided with a valve seat, a' feeding valve member movable on said seat and provided with a stem, a bearing for said stem carried by said framework, driving means connected to Said stem and arranged to impart feeding movement to said valve member, and means also connected to said stem and operative to press said valve member against its seat.

6. Feeding` apparatus comprising a supporting framework, a valve casing mounted thereon and provided with a tapering valve seat, a rotatable tapered valve plug engagg ine` said seat, said plug being peripherally cupped or recessed, a stem fast with said plug` and supported by said framework for both rotational and longitudinal movement, a rotational driving member carried by said stem, a lever pivoted on said framework and operable to exert a valve-seating thrust on the valve stem, and resilient means acting on said lever to maintain such thrust.

7. Acid feeding`r apparatus comprising the combination, with a source of acid supply and a discharge pipe arranged at a lower level, of acid feeding means interposed at an intermediate level between said source of supply and said discharge pipe and comprising a conduit, a rotary feeding valve member seated in said conduit, means for e said valve plug to its seat during continuously rotating said valve member, and means for constantly pressing it against its seat Without interfering With rotation.

8. The combination with a source of supply, and means for utilizing material from said source, of means for feeding material from said source to such utilizing means at a predeterminable rate,` and means for feeding material to such utilizing means independently of the rst mentioned feeding means.

9. The combination With a :furnace and means containing a Supply of a chemical, of means for feedingsaid chemical to said furnace comprising a pipe and, means in said pipe for feeding such chemical, and a Valved hy-pass through which chemical may be fed to said furnace in addition to or independently of the first mentioned feeding means.

In testimony whereof I hereunto aiiX my signature. Y

` LEWIS BAILEY SKINNER.l

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