US2087978A - Pickling apparatus - Google Patents

Description

July 27, 1937. w. D. KELLER PICKLING APPARATUS Filed Aug. 9, 1955 4 sheets-sheet 2 OGC] VII/llller July 27, 1937. w. D. KELLl-:R`

` PIGKLING APPARATUS Filed Aug. 9, k1935 4 Sheets-Sheet 3 l l .H`Q..... u ,.v \.Q..V,. u .v0.1 Q. o o i QN n omo Q 2 1|. o o oo oo 6 MM Mo oo T. i o o ms wmv 0 o. QN 4 4, .o *N o o Vwo wm o fvooemm mw ,M mw mw July 27, 1937. w. D. KELLER 2,087,978

PICKLING APPARATUS Filed Aug. 9, 1935 4 Sheets-Sheet 4 SB m '1L-+-MWWKM @Moa/MMM 1f/Maler Patented July 27, 1937 y i ,f 2,081,978v

2,087,978 Home APPARATUS 'walter n. Keller, Auia'ce, ohio, assignmto The Alliance Machine Company, Alliance, Ohio, a

corporation of Ohio Applieation August 9, A1935, serian. 35,465

The invention relates to pickling apparatus and more particularly to apparatus for pickling\pipes,

' rods and other elongate metal articles;

Experience has shown that inthe picklingof 5.1 metal, the best results are obtained by alternately submerging the material in an acid bath and exposing it to the atmosphere for at least as long a period as it is submerged in the bath. In the pickling of pipe and tubing theniaterial should be tumbled within the bath as well` as while exposed to the atmosphere to assist .in removing the scale, and should be tilted Within the out of the bath to facilitate the bath as well as ow and drainage of the acid, whichaction tends to remove scale from the inside of the pipe.

An object of the invention is to provide means for pickling pipe and the like wherebya group of pipes may be tumbled and tilted without as well as within the acid bath, the material being alternately submerged in the bath and removed therefrom, the periodsv during whichthe material isu exposed to the atmosphere .beingat least as long asthe periods during which thel material is submerged in the bath.- l

Another object is' to provide means whereby the material may be alternately tumbled in opposite directions as it is raised from andlowered into the bath, or by means of which it may be intermittently tumbled in the same direction on each upward or downward movement, or by means of which the material may be alternately raised and lowered without rotation or tumbling at any time during the operation.

A further object is to provide means whereby i the material may begiven substantially a complete rotation `with each stroke of the apparatus and momentarily held stationary at the top of each upstroke.

The invention contemplates broadly the provision of pickling apparatus including a tank in which the acid bath is contained, a stand being located at each end of the tank, said stands being provided with vertically reciprocating rams' hav ing open bearings at their a beam comprising aninner shaft arranged to be alternately rotated in opposite directions as the rams are raised and lowered and a tubular shaft arranged to be selectively connected to the inner shaft as by ratchet means whereby a variety of movements of the outer shaft may be obtained.

Sprockets or pulleys are carried by the tubular shaft and endless, exible to be pickled. These sprockets or pulleys are preferably oppositely eccentrically mounted upon upper ends to receive slings depend there-` from to carry the pipes or other elongate articles 1s claims. ici. 14s-s) the tubular shaft so as to alternately -tilt the Pipes in opposite directions asthey are moved within an'd out of the bath.

The above objects together with others which may be laterpointed out, or which willfbe ob- 5- vious from the drawings and following descrip-A tion, may be attained by a. constructionas illustrated in the accompanying drawings, in which Figure 1 is a vertical longitudinal section through a, pickling apparatus embodying the invention showing the apparatus atl the limit of the upstroke;

Fig. 2, a tp plan view of the apparatus in the position shown in Fig. 1;

Fig. 3, a longitudinal sectional elevation of the apparatus showing the intermediate tilting positions; Y Fig. 4, a sectional elevation showing the piping l'and valves for controlling the operation of the apparatus; 1 zo Fig. 5, la transverse sectional view through the apparatus showing the exible slings in the lowermost position;

Fig.' s, a simuariview showing-the sings in the uppermost position; l

. Y Fig. 7, a transverse sectionalvlew taken as on the line '1 -1, Fig. 1; j

Fig. 8, an enlarged detail section. showing the pawl and ratchetmechanism for connecting the tubular sprocket shaft to the central shaft; i l

Fig. 9, a section on the line 9 9, Fig.'8; A

Fig. 10, an enlarged section-on the line llt-Il; Fig. 8:

Fig. 11, a view similar to Fig. 10 of the opposite ratchet-and pawl.

Similar numerals refer to similar parts throughout the drawings. l

In the embodiment oi' theinvention illustratedv in the accompanying drawings, atank` I2 is provided, ofany suitable construction and o1' asize 40 to conveniently accommodate a. bundle of pipes. bars or other elongate material to be pickled.

At each end of the tank is mounted a stand which cylinder, means to be hereinafter described being 50 provided for continuously reciprocating the rams. Each ram 'I6 has a head in the form of a casting I1 xed upon its upper end, as by a pin I8, and has a sleeve I9 attached thereto in any suitable manner and depending therefrom surrounda of each Section 29a as shown at 3i..

formed in each stand lI3 to receive and guide the head of the ram as it is reciprocated therein.

Each of the heads i1 has an open or substantially U-shape bearing 2i vformed in its upper end to receive the adjacent end of the lifting beam to'be hereinafter described. A tubular feit washer 22 may be located in a suitable recess 21a in the lower end of each bearing 2| for the purpose of 'supplying s'uihcient lubrication to vthe bearing'. y y j The lifting beam includes a central shaft indicated generally at 23 comprising the`journal portions 24 which may be connected together by the central section 25 which may be tubular so that the reduced ends 26 of V titre journal portions may be inserted into the 'ends thereof and xedly secured therein. j A

This central shaft is of 'sufcient length to permit the journal portions 24 thereof to be received into the open bearings/2l on the'upper ends of the rams, and has a pinion 21 xed to each end portion thereof and arranged to mesh with the vertical rack bar` 28 formed upon or secured to the adjacent stand whereby the central shaft will be alternately rotated in opposite directions as the rams are raised and lowered.

The central shaft is surrounded by a tubular -shaft 29 which may have reduced sections 29a secured within its end portions and yjournaled upon the central shaft as by means of an annular flange V3! which may be welded to the outer end nach nance 30 is secured to the ange 32a of the bearing ring 32 as by means of bolts 33, a bushing 34 surrounding the adjacent journal portion 24 of the central shaft within said bearing ring 32.

A spaced pair of sprockets 35 is xed upon the tubular shaft 29 and an endless, flexible sling, which may be in the form of a chain 36, is sus-Y pended from each sprocket for supporting a bundle of pipes, rods or other elongate articles 31 to be pickled. These sprockets are preferably eccentrically mounted upon the tubular shaft in opposite positions as shown in the drawings, so as to produce an alternate longitudinal tilting of the bundle of pipes asy the beam is raised and'lowered. f

A pair of loops or eyes 36 isxed in spaced relation to the tubular shaft 29 to receive hooks froma crane or the like for transporting the beam from place to place in the mill and lowering it into or removing it from the bearings 2|;

of the rams. These loops or eyes are preferably angularly disposed as best shown in Fig. 2, soas tofacilitate the insertion of the hooks therein.

For the purpose of operatively connecting the tubular shaft 29 .to the central shaft, the oppositely disposed ratchet wheels 40 and 46a are fixed near opposite ends of the centralshaft. Pawls 4i and 4|a are pivoted as at 42andy 42a, in the tubular shaft, adjacent to theratchets 40 and- 40a respectively. i

A housing 43 may be formed for each of the pawls and may be welded or otherwise .attached to a suitable cut-out portion of the tubular shaft as indicated at 44, and provided with a removable cover .45 attached to the housingas by screws 46. Acoil spring 41 may be provided for non mally urging each pawl into engagement with the teeth of the corresponding ratchet wheel, one end of the spring being housed within a socket 48 formed in the cover 45 and the ether' end of theypringjbearing against the fiat face 4 9 of the paw .1

. `and pawl 4i, and through An adjusting screw 50 may be located through a suitable'screw threaded opening 5I in each cover for engagement with the outer end of the awl to adjust the limit of movement of the s/ame, and to hold the pawl out of engagement with the ratchet if desired, a lock nut 52 being provided for holding the screw in adjusted position. y

' By means of the pawls and ratchets above described, a. plurality of different movements of the tubular shaft'gmay be obtained as desired. With both of the ratchets 40 and 49 engaged by their respective pawls, as shown in Figs. 10 and 1l, the tubular shaft will be rotated counterclockwise, as viewed in Fig. 10, upon each upward movement of the beam, by means ofthe ratchet 4i) theratchet 40a and lpawl 41a the tubular shaft will be rotated clockwise upon each downward movement of the beam.

By disconnecting one or the other of the pawls vf rom its respective ratchet, it will be seen that the tubular shaft will be intermittently rotated in one direction upon either the upstroke or the downstroke of the beam, depending upon Which ratchet is disengaged. If both pawls are disengaged from the ratchets,l then there will be no rotation of the tubular shaft as the beam is moved up and down,'but the central shaft will continue to operate as a squaring shaft to synchronize the movement of the rams.

Any suitable means may be provided for reciprocating the rams I6, and for this purpose a hydraulic circuit may be provided which may be constructed in the manner shown in Fig. 4 of the drawings. Oil or the like may be stored in t e tank the upper portion of which is shown a 53.

A motor 54 may be provided for driving the pump 55 which is connected, by a feed pipe 56, to the tank. A baille 51 may be located in the tank adjacent to the feed pipe to prevent undue turbulence in the tank and an air vent 58 of any conventional design may be provided. The delivery pipe 59 leads from the pump to the relief `valve 60 which is connected by a return pipe 6I lto the tank and by a pipe 62 to the four-way gv'alve V53.

A return pipe 64 leads from the four-way valve to the tank, and may Ipipe 6l leading from the relief valve $0. A pipe ,65 leads from the fourfway valve 63 to the rebe connected to the returnitl turn pipe 64l and has provided therein a feed control globe valve 66. A pipe 61 leads from the four-way valve 63 to a T 68 from which the pipes 69 lead to the lower ends of the cylinders i4.

A time delay valve' 10 may be provided in the circuit, being connected to the four-way valve "63 by a, small tube 1|, a similar tube 12 leading from the time delay valve to the tank. The pilot valve 13 is connected to the four-.way valve 63 by Vmeans of a small tube 14, which' tube is connectedto the time delay valve by a similar tube 15. A small tube 16 leads from the time delay valve to the pilot valve and asimilar tube 11 connects the pilot valve with the tube 12. A small tube 18 leads from the pilot valve to the pipe 61.

The rotatable stein or plug 19 of the pilot valve is provided with a laterally spaced pair of angular fingers or arms and 8l adapted to be en- .gagedrby the upper, and lower dogs 82 and 93 respectively,niounted upon' the sleeve I9 of one of the rams., the lower justably mounted thereon.

As shown in Fig. 4, the parts are at the top dog being preferably adf pilot pressure to the time delay valve lll.

is transmitted valve 63 as viewed in Fig.' 4, shifting the posilower dog 83 has engagedthe radial linger or arm 8| and tripped the pilot valveg`|3 directing the This time delay Valve may be adjusted to provide for a delay of from one to thirty seconds at the top oi" eachupstrke. v

After the expiration 'of the period-for which the time delay valve is adjusted, the pilot pressure to the right side of the four-way vexposed to the atmosphere for at least an equal period and with the construction provided the pipes maybe exposed to the atmosphere for longerperiods than they are submerged in the bath, thus obtaining the best results in pickling.

Although the drawingsand above specification disclosed the best mode in which Ihave -conteml kplated embodying my invention I desire to be not limited tothe detailsfof such disclosure, for, in

' the further practical application of my invention,

tion of the four-way valve so that'the pump dey livery is discharged directly to the tank; at approximately zero pressure, while at the same time the cylinders are connected to the tank through the feed control globe valve 66 which governs the rate of descent. of the rams. A

The rams may be stoppedvat the top of the stroke, for' loading or unloading by shutting oil the feed control valve 66. 'Ihis valve may be shut oi at any time during the upstroke of the rams. and when theY rams are stopped at the top of the stroke, the pump will be unloaded after'the expiration of the period for which the time delay valve is set. i

Assumingthat the feed control valve 66 not been shut oiion the upstroke of the rams, the

rams will start to descend as soon as the time delay period has expired and as tlie rams reach the bottom of the aownstroko,` the dog 'az win engage the radial vfinger or arm 80, tripping the pilot valve 13, operating the four-way valve 63 so as to direct the pump delivery' to the cylinders,

. ,the upstroke when the termediate positions of the vbundle of the vpartseach the top of operation as abovedescribed Willbe repeated. s.

With the.. rams at the bottom of the downstroke, the bundle of pipes to be pi ed is located within the pickling bath in t egposition shown in Fig. 5 and in broken lines in Fig. 1 and as the rams reach'the top of the upstroke raising the rams until the bundle of pipes assumes the position shown infull lines in Fig. 1 and in Figs. 2 and 6. l Th'einpipes are x shown in full and broken lines in Fig. 3.

in the reverse direction. as

Asv the rams travel upward about` one--fourth of theiupstroke the bundle of pipes will assume the' position shown m broken lines in Fiese,

being lrotated and longitudinally ltilted to the left' many changes in form and construction may be -made, as circumstances require or experience the bearings suggests,l without departing from the spirit of the invention, within the scope of the appended claims. l

- -I claim:

1; Pickling apparatus including a tank con-v taining pickling luid, vertically reciprocating members mounted adjacent to opposite ends of said tank, an open bearing at the upper end of each reciprocating member, a beam carried by the bearings of said reciprocating members, means forcontinuously reciprocating said reciprocating members, 'and flexible slings suspended from said beam for supporting material to be pickled.

v2. Pickling Aapparatus including a tank containing 'pickling fluid, verticallyv lreciprocating members mountedadjacent to opposite ends of said tank, an open bearing at the upper end of eachr'eciprccating member, a beam'carriedby of said reciprocating members, means for continuously reciprocating said reciprocating members,means operated by the reciprocation of said reciprocating members for rotating said beam, and flexible slings eccentrically.

suspended from said beam for supporting material to be pickled.

3. Pickling apparatus including a tank con-l taining pickling iiuid, verticallyv reciprocating members mounted adjacent to opposite ends of said tank, an open bearing 4at the upper end of and as the parts travel to' about three-fourths of n the distance of the upstroke, the bundle of p is will have been rotated, and longitudinally tilted Fig. 3, thus not only assisting in tumblingzthe pipes against each other as alternately raised from and submerged into the pickling bath, but also providing for-facilitating` I as they are raised out o the ow and drainage of to remove scale fromgtlie' inside of thepipesv 'With the apparatus constructed-as: above described, the rams-'willbe continuously`reciprocated, alternatelyv raising the bundle of pipes from the pickling bath and submerging them therein, the bundle of pipes beingrotated so as to tumble the pipes againstv each other,- and alternately tilted' longitudinally in opposite directions) during each raising and lowering .'movement. "I'his tumbling and tilting is obtained by the rotation' of the exible slings which may alternate in direction or intermittently rotate in either direction as desired.

By means of the time delay valve, of pipes may be held at rest for a' considerableperlod, at the top of each upstroke.A 'Ihe pipes are thus alternately submerged inthe acid bathand shown in fulllines in they'are rotated and the acid from the pipes the bath, whichtends thebundio each reciprocating member, a beam carried by the bearings. of said reciprocating members,

means for continuously reciprocating said reciprocating members,'means operted by the reciprocation of said reciprocating members for rotating said beam, and ilexible slings oppositely eccentri'cally suspended from said beam for supl porting material tov be pickled.

' 4. Pickling apparatus including a tank containing pickling iluid, vertically reciprocating members adjacent to said tank, a beam carried by said reciprocating members, means for continuously reciprocating said reciprocating members, flexible slings suspended from said beam for supporting material to be pickled, and cooperating means upon `said beam and mounted adjacent to said reciprocating members for rotating said beam as the reciprocating members are re- Q ciprocated.

5. Pickling apparatus including a tank containing pickling duid, vertically reciprocating members adjacent to by said reciprocating members, means for continuously reciprocating said reciprocating members, flexible slings oppositely eccentricallysuspended from said beam for supporting material to be pickled, and cooperating means upon said beam and mounted adjacent to said reclprocating members for rotating said beam as the reciprocatingv members are reciprocated.

6. Pickling apparatus including atank containing lpickling iuid, vertically reciprocating said tank, a beam carried 66 members adjacent to said tank, a beam carried 7H by said reciprocating members, means for continuously reciprocating said reciprocating members, flexible slings suspended from said beam for supporting material to be pickled, and cooperating means upon said beam and mounted adjacent to said vreciprocating members for alternately rotating said beam in opposite directions as the reciprocating members are raised and lowered.

'7. Pickling apparatus including a tank containing pickling iiuid, vertically reciprocating members adjacent to said tank, a beam carried by said reciprocating members, means for continuously reciprocating said reciprocating members, flexible slings oppositely eccentrically suspended from said beam for supporting material to be pickled, and cooperating means upon said beam and mounted adjacent said reciprocating members for alternately rotating said beam in opposite directions as the reciprocating members are raised and lowered.

8. Pickling apparatus including a tank containing pickling fluid, rams mounted at each end of the tank for continuously, alternately submerging material to be pickled in the uid and removing it therefrom, and means cooperating with the rams for tumbling and longitudinally tilting the material within the fluid and while removed therefrom. 1

9. Pickling apparatus including a tank containing piekling iiuid, rams mounted at each e'nd of the tank, for continuously, alternately sub- 'merging material to be pickled in the`fiuid and removing it therefrom, and means 'cooperating with the rams for tumbling and alternately lon, gitudnally tilting the material within the iluid and While removed therefrom.

10. Pickling apparatus including a tank containing pickling fluid, rams mounted at each end of the tank for continuously, alternately submerging material to be pickled in the 'fluid and removing it therefrom and maintaining the material out of the fluid for periods at least as long as it is submerged in the iiuid, and means cooperating with the rams for tumbling and longitudinally tilting the material within the fluid and while removed therefrom.

11. Pickling apparatus including a tank containing pickling fluid, rams mounted at each end of the tank for continuously, alternately submerging material to be pickled lin the fluid and removing it therefrom and maintaining the material out of the fluid for periods longer than it is submerged in the fluid,'and means cooperating with the rams for tumbling and longitudinally tilting the material Within the fluid and while removed therefrom. l

l2. Pickling apparatus including a tank con-` taining pickling fluid, a stand at each end of the tank, a rack bar upon each stand, a vertically reciprocating member associated with each stand,

a rotatable beam carried by the reciprocating members, pinions upon aid beam cooperating lwith said rack bars, an iiexible slings suspended from said beam.

13. Pickling apparatus including a tank containing pickling fluid, a stand at each end of the tank, a rack bar upon each stand, a vertically reciprocating member associated with each stand, a beam including a central shaft carried by the reciprocating members, pinions upon said shaft cooperating with said rack bars, a tubular shaft journaled upon the central shaft, flexible slings suspended from said tubular shaft, and means for operatively connecting the tubular shaft to the' central shaft.

14. Pickling apparatus including a tank containing pickling fluid, a stand at each end of the tank, a rack bar upon each stand, a vertically reciprocating member associated with each stand,

`a. beam including a central shaft carried by the .reciprocating members, pinions upon. said shaft cooperating with said rack bars, a tubular shaft journaled upon the central shaft, flexible slings suspended from said tubular shaft, and ratchets and pawls for operatively connecting the tubular shaft to the central shaft.

15,'Pickling apparatus including a tank containing pickling fluid, a stand at each end of the tank, a rack barupon each stand, a `vertically reciprocating member associated with each stand, a beam including a central shaft carried by the reciprocating members, pinions upon said shaft cooperating with said rack bars, a tubular shaft journaled upon the central shaft, ilexible slings suspended from said tubular shaft, and oppositely disposed ratchets and pawlvs for operatively connecting the tubular shaft to the. central shaft.

16. The method of pickling elongate material which consists in continuously, alternately submerging the material to be pickled into a bath of pickling fluid and removing it therefrom,`and

rotating, tumbling and longitudinally tilting the pended from said beam for supporting material to bepickled, means for continuously recipr eating` said ram-s, and means operated 'by thereciprocation of said rams for rotating said beam. '18. The methodof pickling elongate material which consists in continuously, alternately submerging'the material to bel pickled into a bath of pickling fluid and removing it therefrom, and alternately oppositely rotating,.tumbling and alternately oppositely longitudinally tilting the ma'.-v terial within and out of the fluid. l

' WALTER D. mma.

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