US1447007A - Valve - Google Patents

Description

Feb. 27, 1923. 1,447,907

A. J. BARNEBI., JR

VALVE Fild Mar.' y5, 192,1

Patented elo. 27, 3.@23.,

aueosr J. Britannien, an., or nnwenn, new annsnr, assrenon 'ro'rnn Doiaecorr- PANY, e oonr'o'ne'ron or DELAWARE.

VALVE.

Application led March 5,

T0 all whom' t may concer-a.'

Be it known that l, ,Alcocer Josnrn Brummen, Jr., residing` at Newark, in the county of Essen, ot N Jersey, have invented certain new and useiul improve ments in Valves; and l do hereby declare the Jfollowing` to be a full, clear, and enact 'description ot the invention, such as will enable others skilled in the art to which it appertains to malte and use the same.

rl`his invention relates to a valve, and more particularll,7 to a rotary valve,fdesiox. ed to place a given conduit in alternating` communication with two other conduits.

ln certain types ot continuous Atilters, such, tor example, as those used in the Dori' classiiiers, shown and described in il. Fl. Patent No. 996,624, the direction ot the pressure against the filtering medium is periodicallyl u in order to break up the depositlot" rever solids which otherwise would tend to choke 1t. In the case of suction filters, such as those referred to, the usual pra tice is tov alternate the suction periods i.. th short periods ot blowing, the ratio ot these periods to each other varying` with different materials and with.. different physical conditions of the same material. The object ot the present invention is to design a valve which will automatically put the filters in alternating communication, iirst with a suction pump, and then with an air compressor, the relative durations ot suction and blowing bein variable to suit conditions.

The valve developed in accordance with the present invention to meet these requirements comprises a shaft or axis bearing tour discs spaced apart vto deiine three annular channels, and rotating' within a cylindrical or conical casing or seat, the discs makin?)` liquid tight contact with the walls ot the seat. rl`he central channel communicates with the iilter or iilters through an opening or openings in the wall of the casing. @ne of' the'remain- "ing channels communicates with la suction pump likewise through an openingin the casing wall, and the other with an air compressor. The central channel is divided into twononcommunicating sectors of variable size, each oi wliichcommunicates with one of the outer channel'sfthrough a passage in the separating disc. iis the valve rotates the iilters are placed in communication',l first with thesuction pump and ,thenV with'the compressor, and the relative durations of 192i. sei-iai ne. 449,781.

the sucking and blowing periodsare determined by the relative arc lengths ot therespective sectors. i

The accompanying drawing discloses a preferred embodiment of theinvention 'and a study oit it will make clear the construction and operation or the yvalve'. ln this drawing Fig. 1 is a longitudinal vertical section through the casing showing the valve and its driving; mechanism in elevation;` Fig. 2 is a transverse vertical section taken on line 2 2 ot Fig'. 1; Fig. 3 is 'another transverse vertical .section talren on line oft Fig. 1; Figs. e, 5, 6 and 7 are detail'views of certain elements of the valve.

rlhe valve structure asa whole comprises a conical seat or casing- 1 supported byV suitable brackets 2. There are three pipe connections 3 entering` the central part of the casing from the several compartments of' a suction filter b 2;, a fourth pipe connection l entering the casing near its larger end and communicating lwith a vacuum pump and lifth connection 5 entering the casing at its smaller end and communicatitiQ,- with an air compressor or pump. rlhese elements ot the structure are stationary. jf

The valve proper', which is seated within this casing and controls the communication between the central connections Sand-the outer connections e and, comprisesa central shaft o' upon which are mountedl two spool-shaped elementsYand 8, the former being lteyed upon the shaft and the latter being adjustably fixed thereon by means of a set screwQ. The element 7 is made` up or a centra-l boss 10 upon which are mounted two 'lianges or discs 11 and 12, defining' between them annular channel 13. These flanges are trusto-conicalin shape and conformy to the conical face of the casing. 'Cast' integrallyv with this element and adj' acent',v the disc 11 is abevel gear 14e. A radial lugl projects outwardlyfrom the tace of `disc`12 and forms an integral'p'art ot' the element. Adjacent this lug is an opening 16 `which entends through` the disc 12', 'asy is lclearly shown'in Figs. 4 and 5, vElement 8 issim-ilar in its construction to element 7 and is made up of a central boss 17` bearing two outstanding flanges or discs 18 and 19, `dcfining between them a smaller annular chan,-

iiel Q0. Projecting from the" face off the larger ldisc 18 isla 'radiallugi and'adjpacent this lugfan'ropniiig) 23y passesthrolgh the disc. Both lugs 22 and 15 are made with inclined outer edges designed to make liquid tight contact with the conical face of the casing. u The boss 17 extends beyond disc 19 vand furnishes a seat for the set screw 9.

When these two elements 7 and 8 are mounted upon the shaft 6 in the manner shown in Fig. 1, they are spaced apart because of lugs and 22, so that their inner flanges 12 and 18 define a third annular channel 24 between them. This annular channel is, however, divided by the two lugs into two non-communicating sectors, as is clearly shown in Fig. 2. This inner channel 24 and .its two sectors communicate directly with three pipe connections 3 which lead Ato the suction bones. The outer channels 13 and 20 communicate with the vacuum pump and the air compressor respectively. One sector of the annular channel 24- is in communication through the opening 16 with the held between this bracket and the outer face of bevel' gear 14, by means1 of which the valve is constantly uii'ged toward the smaller end of the casing and hence is kept firmly seated. lVear is automatically taken up by this means.

rThe valve is slowly rotated through a chain of reducing` gears comprisingthe bevel gear 14:, an intermeshing bevel pinion `channel 2/1, opening 16, and pipe connection .4t

27, a worm gear 28, a worin 29 and a sprocket wheel 30. l

When used in a suction filter system the operation of the valve is as follows: .Air isy drawn from the suction boxes through connections 3, one ofthe sectors of annulai annular channel 13 As the valve is rotated'the other sector, which is in direct communication with the air compressor communicates successively with each of the pipe connections 3 and places them in com- ;munication with the source of compressed air. Thus, for the period during which this sector covers a given pipe connectionv 3, thatcompartment of the suction box from which that pipe leads is subjected to a blow ving operation. By loosening set screw 9 and yturning the element 8 upon theshaft it is `possible to vary the relative sizes of these Y two sectors at will, so that the blowing periods may be increased or decreased to suit conditions. If the valve rotates at a .very slow speed, say, once every vten or twenty 1 minutes, the angular relation of the lugs as shown in Fig. 2 will give a blowing period between onevand two minutes.

i aereo? It is to be observed that by dividing the suction box into three compartments and using a valve of this description and adjustment there are always two compartments sucking and, of course, never more than one blowing at a given time.

The valve has been described in connecf tion with use in a suction filter system. llt was primarily designed for this use and will probably find its greatestusefulness in this connection. `There is no intention, however, to limit it to such use and it is well'adapted for other purposes. Notable among these is its use as a liquid sampler. When used for this purpose only one of the three pipe connections 3 would be employed', preferably the uppermost one', The liquid to bc sampled enters through this pipe, passes into the largest sector of the annular chair nel 24 and out throughv pipe l. This would be the path taken by the bulk of the liquid. The sample would be periodically taken through the smallest sector communicating with pipe 5, The adjustability of' the valve would malte it particularly well fitted for such use, as the amount of the sample could be varied atl will by changing the relative sizes of the two sectors.`

It is also possible to employ this valve in connection with the ordinaryfrotary suction filter. This valve may be used wherever it is required to place a given conduit or conduits in alternating communication with two otherconduits.

Although a certain specific embodiment of the invention has been shown and described it is tobe understood that theinvention is not necessarily limited to these l second conduit entering the .casing from a suction pump, a third conduit entering the casing vfrom an air coinpressor,..and agrotaiy valve within the casing which by its rotation places the conduit leading to the vsuction filter in alternating communication with the conduits leading "to the suction pump and the compressor.

3. The combination of a casing,a rotary valve within the casing comprising a shaft, a plurality of discs placed along the shaft defining annular channels between them,

-- means dividing one of these channels into non-communicating sections, each. section communicating with one o' the other channels, and a conduit leading to each ot the channels.

a. The combination of a casing, a rotary valve within the casing comprising a shaft, four discs spaced along the shaft defining three annular channels between them, radial partitions dividing the central channel into non-communicating sectors, 'passages in the adjacent discs connecting each sec-tor with one oit the outer channels, and a conduit communicating with each ot the three channels.

5. The combination of a. casing, a rotary valve within the casing comprising a shaft, tour discs spaced along the shaft defining three annular channels between them, radial partitions dividing the central channel into non-communicating sectors, means tor varying the angle between the radial partitions, passages in the adjacent discs connecting each sector with one of the outer channels, and a conduit communicating with each ot the three channels.

6. The combination o'i' a conical casing, a rotary valve within the casing comprising a shaft, a plurality of discs placed along the shatt defining annular channels between them, means dividing one ot these channels into non-communicating sections, each section communicating with one ot the other channels, a conduit leading to each ot the channels, and yielding means normally urging the valve toward the smaller end ot the conical casing.

7. The combination of a casing, a rotary valve within the casing comprising a shaft, two spool-shaped elements mounted on the shaft, each having a hoss with flanges or discs thereon spaced apart to define an annular channel between them, the two spool shaped elements heing spaced apart upon the shaft to define a third annular channel between their inner flanges, a radial lug projecting outwardly from the inner YHangs of' each spool-shaped element cooperating to divide the inner annular channel into two non-communicating sectors, a passage in each inner tlange` adjacent its radial lug and between their inner flanges, a radial lug prol jecting outwardly from the inner flange of each spoolshaped element cooperating to divide the inner annular channel into two non-communicating sectors, means for permitting movement of one of the spool-shaped elements upon the shaft to vary the angular relation between the two radial lugs, a passage in each inner flange adjacent its radial lug, and a conduit leading to each of the annular channels.

9. In a suction filter system of the class wherein the filter' is placed in alternating communication with a suction pump and an air compressor, the combination of a casing, a conduit entering the casing from the suction filter, a second conduit entering the cas-L ing from the suction pump, a third conduit entering the casing from the `air compressor, and a rotary valve within the casing which hy its rotation places the conduit leading to the suction lilter in alternating communication with the conduitslleading to the suction pump and the compressor. f

l0. The combination of'a casing, a plural-V ity ofconduits entering the .casing from a suction filter, a conduit enteringthe casing from a suction pump, a conduitentering the casing from an air compressor' and a rotary valve within the casing which hy its rota` tion successively places the conduits leading to the suction filter in alternating communication with the conduits leading to the suction pump andthe compressor.

In testimonywhereot I afIiX my signature. AUGUST J. BARNEBL, JR.

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