US1429713A - Compressed-air-filtering apparatus - Google Patents

Description

' R. H. CAZIER'AND w.. H.- HECKEH.

COMPRESSED AIR FILTERING APPARATUS. APPLmATjloN m50 SEPT. 17'. 1-921.

Patented Sept. 19?, 1922.

Lnvenors Patented Sept. I9, M922.

met rare PERRY H. CAZIER AND WILLIAM H. HECKER, 0F NASHVILLE, MICHIGAN.

COMPRESSED-AIR-FILTERING APPARATUS.

Application le September 17, 1921. Serial No. 501,333.

To all whom t may concer/n:

Be it known that we, PERRY H. CAzmR and WILLIAM I-I. I-IECKER, citizens of the United States of America, residing at Nashville, in the county of Barry and State of Michigan, have invented certain new and useful Improvements in Compressed-Air- Filtering Apparatus; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an apparatus for use in removing moisture, oil and the vlike from compressed air. In compressing air, the moisture which is carried as water vapor inthe air is condensed, and the lubricant lfrom the compressor used is more or less carried into the compressed air. Under compression the. moisture condenses to water and goes from the tank or other container of compressedair when the same is taken for use. In the use of the air for, operating air sprayers or brushes for the application of varnish, shellac or other like coatings to articles of furniture, the water coming from thesprayer nozzle with the varnish or the like causes a roughening of the grain of the wood and is otherwise detrimental for the proper finish and application of the coating. In fact von days when the humidity of the atmosphere is high, it is almost if not quite impossible to operate the spraying apparatus by means of compressed air due to thehigh percentage of water therein. The lubricating oil is also a source of trouble to a lesser degree. In many other ways where cornpressed air is used, the water therein 'is a source of trouble and annoyance.

Our invention is directed to a very simple yet effective construction whereby the water is wholly removed from the air, or` at least to a degree where it is not of consequence, and at the same time other undesirable ingredients are likewise removed, such as lubricating oil from the compressing machine. And it is a primary object and purpose of the invention to make an apparat-us which is practical and eflicient, durable and economical in manufacture and maintenance for the attainment of the end set forth, and as will appear as understanding of the invention is had from the following description, taken in connection with the accompanying drawing, inwhich, i 4 Y Fig. 1 is a side elevation, with parts broken away andin section, of the apparatus, and

Fig. 2 1s a fragmentary vertical section through the filter holding'portion of the apparatus, showing the method of introducino the filtering material therein.

Iiike reference characters refer to like parts in the different figures of the drawing.

In the construction, the pipe 1 leads from any tank or other reservoir of compressed air and comiects into the upper end of a T-coupling. with the T 2 in one side thereof and at its opposite end leads int-o a valve casing t, the valve in which may be opened or closed by operation of the hand wheel 5. A vertical pipe 6 leads downwardly from the valve casing 4L, being connected by a union 7 with a second vertical pipe 8 in direct alinement with the pipe 6, an elbow 9 being secured at the lower end of pipe 8 for connection thereof to a second horizontal pipe 10 which leads into a lateral neck 11 in the side of a secondl T-coupling 12. A reducer bushing 13 threads into the lower end of the 'l' 12 and a short nipple 14 connects therewith, at its lower end leading into a valve casing 15, the valve in which is operated Vto open or closed position by hand wheel 16. An outlet pipe 17 leads downwardly from the valve casing 15.

A. tube 1'8 has threaded connection into the upper end of T 12, at its upper end being equipped with a reducer 19 for connection of a nipple 2O therewith, to the upper end of which a third T-couplig 21 is attached. A short connecting nipple 22 connects the upper end of T 22 with a valve casing 23, the valvein which is operated to open or closed position by hand wheel 24. The upper end of the valve casing 23 is connected with the lower end of 'I 2 by anipple 25, as shown.

From the T 21, a. short nipple 26 projects laterally and connects with a valve casing 27, the valve position in which is controlled by hand wheel 28. A pipe 29 leads away from the casing 27 to the nozzle or sprayer which is to be actuated by compressed air, not losing` shown in the drawing as it forms no part of the present invention. rIhe tube 1S is of relatively large diameter compared with the diameters of the other pipes in the construction and is adapted to be filled with any suitablev absorbing` and filtering material. Wehave usedk absorbent cotton A horizontal pipe 3 connects and the same has proved vparticularly satisv and the tube then drawn downwardy over y the lunoer thereb leavino' the cotton in lo b y 2:

y the tube 18, as is evident.

Inoperation, the valves in casings 23 and 15Vare closed and those in casings 4 and 27 are opened. The compressed air coming through pipe 1 passes through pipes 3, 6, 7

and 10, and upwaridlytlirough the cotton 18, passing outwardly through pipe 29 for use. f ln passing through the absorbent cotton, the water and any lubricating oil, in the air is retained and abs'orljoed,I so. that the airpassing outwardly through pipe29 is dry. ln the course 'of time, the cotton be;

comes saturated, lwhereupon valves in cas.- ings 4 and 27are closed and those in casings 15 and 23 yare opened, thereby making a direct downward passage for the` air through the cotton 82 and `outwardly through the outlet pipe 17, the water'carried by the cotton being blown outwardly through the `outlet pipe 17 as is evident.- l, ln this way it is possible to alternately s iaturate .the cotton andthen blow and, dry it out, replacing the cotton at intervals when it has more or less lost its absorbent qualities.

This construction has been in practical use and has proved an effective barl against the passage of water in the compressed. air

`out at thel outlet pipe 29, ywhereby the air may be used in practically any and all places' where compressed air is used for spraying or other like operations, such as operating a sand blast or the like. rllhe appended claims define the invention and we consider ourselves asentitled to all forms of structure coming within the QVe claim: n, l,

`1. Anh apparatus of the yclass described, comprising a vertically 'positioned container, absorbent material lfor collecting moisture scope thereof.

.and lubricant from compressed passed vvtherethrough, means for. carrying compressed ail? to the lower end, oftheI container,A means to close said, airv carrying means against the passage of air, said last named means being normally open, a normally Iopen outlet to the containerat its upper end, means kto close Vsaid outlet,1"a normally closed outlet to the lower end oik the container', means-for openingsaid outlet, and a normally closed conduit for carrying compressed air into the upper end of the container combined with means for opening said conduit, substantially as and 'for the purposes described.

2. An apparatus ot the classfdescribed, comprising-a relatively large 4vertically po, sitioned tubular container, absorbent ,fmfaterial therein, an inlet .tothe ri'ippelQend of vthe, container, a normallyfopen bnanoh Y lpipe leading to one side-from said inlet, a 80 manually operable valve in said branchl pipe, a second manually operable Vvalve` aty the .upper eiidand connected with-'said inlet and directly connected to a compresseda'ir cariy- Y ing pipe, a'laterally extendingwconduit for 85 4compressedllair leading vfrom the pipeto 'the flowerendfoi the container, saidvconduit havto the 'lower end ofthe-y container between the absorbentmaterial and the flower eutlet, means for opening orfclo'sing said .eon duit,a 4, second. conduit for carrying ,compressedfair'j into the upper .endoi' the' container, and v105 means for opening or y closing .said `,conduit, substantially as and yfor the purposes described... i 1

v 4.y An., apparatus of .the i class comprising a vertically positioned tubular container,` a l'-coupling' attached yto thelower end thereof, areducer bushing inthe'lower end:y oit' the` coupling, aconduit having' aA manually operable valve i thereiny connected with the bushing land leading to, the, outside,

c a conduit.for-'compressed nair,,leading-"to the T-coupliiig, lsaid last namedfconduit vhaving al manuallybperable valve therein, a third conduit connectingzthe second `conduit with 'y the upper end of the container andhaving 120 awmanually operable valve therein beWen the container` and thesecond 'conduit` a. branch conduitleading'from tlie'third cony Y duit between fthecontainer and the valve. in the third conduit andA likewise havinga manually operable valve. therein, and 'absorbent material jlling the container.

5. An apparatus lof the class described, comprising a vertically positiiiedcontainer, f absorbentA material therein peii'iiitting the 130 passage of compressed air therethrough and absorbing moisture and lubricant from the air on passage7 means for carrying compressed air to the lower end of the con- 5 tainer, means for carrying compressed air to the upper end of the container7 an outlet to each end of the container, means for independently opening or closing either outlet,

and means in each of said air carrying means for independently opening or closing the 10 same, substantially as described.

In testimony whereof we affix our signatures.

PERRY H. oAZrER. WILLIAM H. HECKER.

Images