US1492780A - Feed-water grease-extractor apparatus - Google Patents

Description

May 6 1924.

' H. C. DAVIS FEED WATER GREASE EXTRACTOR APPARATUS I Filed Sept. 15 1920 '2'Sheets1Sheet ma a 4 w J M Willi/,6 $2M,

W/ TNESSES A TTOR/VEY.

May 6, 1924. I 1,492,780

. H. C. 'DAVIS FEED WATER GREASE EXTRACTOR APPARATUS Filed Sept. 15, 1920 2 Sheets-Sheet 2 WITNESSES ATTORNEY,

Patented May 6, 1924.

UNITE STATES l TiENT OFFICE.

HOWARD 0. Davis, on ELIZABETH, NEW ERSEY, ASSIGNOR To Rowe DAVIS, EN

emnnns, me, on NEW YORK, N. Y., ,A CORPORATION ornELAwAaE.

FEED-WATER GRE sE- XTRA TQR APPARATUS.

Application filed September 15,1920. "Serial a... 410,513.:

To all whom it may concern:

Be it known that I, HOWARD C. DAVIS, a'

citizen of the UnitedStates, anda resident of Elizabeth, in the county of Union and" It is usual on tank steamers, so called,

or oil-carrying vessels, to keep the oil inthe tanks at a reasonably warm temperature by means of heater coils placed in the tanks and into and through which coils the exhaust steam from the engines or other source is caused to flow. The exhaust steam and water of condensation flowing through the heater coils become impregnated with oil or grease due to leakage or other defects in the pipes or their joints and rendered, for

that reason, unsuitable for use as feed-water for the engine boilers. I 7

One of the main objects of this invention is to extract the grease or oil from the water resulting from the steam employed in the aforesaid heater coils, so that said water may be properly used as feed-water. or for other purpose. My invention involves the provision of apparatus into which the return from the aforesaid heater coils is piped and within which the grease is efiectually extracted or removed from the water of condensation by mechanical means constituting portions of said apparatus, all exhaust vapor entering said apparatus being confrom the surface of the water in one of said compartments and a special filter in the adjacent compartment through which the water flows by gravity to a suitable discharge and which completes the removal of the grease from the water. I

' densed therein preparatory to the removal in said compartment. fitted, for the filter-compartment 14, with a gauge glass 27, whose reading will indicate The apparatus of my invention involves) novel features of constructlon, arrangement and combinations'of parts, and said 1nvention will be. fully understood from the detailed description hereinafter presented, reference being had tothe accompanyingdrawings, in which: Y

Fig.- 1 is a central vertical section, partly broken away, through an apparatus cone) structed in accordance with and embodying T my invention, the section being on the dotted Fig. 2 isa horizontal section through the" line 11 of Fig. 3

same taken on the dotted line 2-2 of Fig. 1;

Fig. 3 is'a' top view of the same, and Fig. 4: is'a' sectional view through a portion off the same on the dotted line 4-4 of Fig. 1, the shell of the tank'being partly broken away.

In the drawings, 10 designates the tank-or u shellof the apparatus subdivided by vert1cal.,partitions 11, 12 into substantially equal communicating compartments 13, 14:,

the compartment 13 being an inlet compartment and provided with an inletpipe 15, a

scum pan 16 and a valved drain outlet pipe 17, and the'compartment 14:;being provided with a filter 18,-a discharge pipe 19therefrom and a valved drain outlet pipe 20.

The tank 10 will be made of sheetmetal and it has a bottom 21 and'two large removable cover plates. 22, 23, respectively, one being overeach compartment or chamber ofthetankand the provision of which renders access to said compartments or chambers entirely convenient. The tank 10 is fitted, for the inlet compartment 13, with gauge glasses 24,25, one being wholly below the level of the body of water 26 in said compartment, and the other being partly.

below and partly above said level, as shown in 1, and the purpose of this arrange- I ment of said glasses being to afford the most accurate reading of the oil condition The tank 10 is also the oil condition of the body of water 28 in said compartment and thereby also the con dition of the 'filtering'material. In the top of the" tank 10 is provided avent 29 (Fig;

The partitions 11 12 serve to partly separate the inlet and filter compartments 13, 14 from each other, and they are parallel with each other and reasonably close together, a passage 30 being left between them through which the water from the compartment 13 may flow upwardly and pass over the partition 12 into the compartment 14. The partitions 11, 12 are baflie plates and extend entirely across the tank 10, as shown in Fig. 2, and the partition or plate 11 extends downwardly from the top of the tank to nearly the bottom thereof, while the partition or plate 12 extends upwardly from the bottom of the tank to about the top of the filter 18 or to the horizontal plane of the water levels in both compartments, as shown in Fig. 1.

The inlet pipe extends below the water level in the inlet compartment or chamber 13, and said pipe is connected bypiping 31 (Fig. 2) with the return from the heatercoils, not shown, located in the usual oiltanks provided on a tank-steamship or oilcarrying vessel.

The scum-pan 16 is preferably of V-shape in vertical cross section and extends across the compartment or chamber 13, as shown in Figs. 2 and 4, and is supported at its ends on angle-iron brackets 32 secured to the easing of the tank 10. The pan 16 has its open top at the water level in the compartment 13, and said pan is provided at its bottom with outlet pipe connections 33 serving as a discharge from said pan to any exterior location that may be determined upon.

Portions of the grease or oil will ascend to the top of the body of water in the compartment 13 during all the time that the apparatus is in use, and this grease or oil due to the continued flow from the pipe 15 will pass over the sides of and enter the pan 16 and be carried away by the discharge pipe connections 33, thus relieving the water from a large percentage of the grease or oil and preparing the water for further treatment by the filter 18. It may be mentioned here that exhaust vapor discharging through the inlet 15 will be condensed in the body of water 26.

The additions of water to the compartment or chamber 13 will induce a fiow of the water from the bottom of said compartment up through the passage and over the plate 12 into the compartment 14 within which the water will be filtered and then find its escape through the outlet pipe 19 for use as feed-water or other purpose. The weirplate 12 maintains. the water-level in the compartment 13.

The filter 18 is of special construction adapting it for the purpose of my invention and its details will therefore be at once described. The filter comprises an exterior cylindrical perforated galvanized steel container 34, an inner slotted or perforated composition cone 35 which is hollow and covered with fine mesh wire gauze 36 and a bed of cocoanut fibre 37 which fills the container 34 exterior to the cone and possesses a high affinity for oil. The container 34 will preferably be of such size that the outer strata of cocoanut fibre therein will equal more than three hundred times the area of the inlet pipe 15. The wire gauze 36 is provided to prevent any of the cocoanut fibre from passing through the cone 35 with the filtered water. The cone 35 is bolted to the perforated bottom of the container 34 over a central opening therein and houses a vertical valve stem 38 which carries on its lower end a valve 39 and a coiled spring 40 which exerts a closing force against the valve 39 and is confined between said valve and a top housing 41 therefor and through which housing the valve stem 38 passes, as shown in Fig. 1. The filtered water also passes through the housing 41, which is bolted upon a mainhollow housing 42 which afiords a commodious chamber for the flowing filtered water and also for the spring 40, valve39 and seat 43 for said valve. The housing 42 communicates with the outlet pipe 19 for filtered water and which will lead to a reserve tank or reserve tanks for the water.

The upper end of the container 34 is closed by a perforated disk or plate 44 which is seated on an inner annular flange of a band 45 secured around the upper edgesof the sides of the container, as shown in Fig. 1, and said disk 44 receives at its center the upwardly projecting end of the cone 35 and i is removably clamped down on its seat by a nut 46 which engages said cone.

The valve stem 38 projects upwardl above the cone 35 and receives on its thread ed upper end a handle-nut 47 which engages the upper edge of said cone and when.

worked downwardly against said edge serves to draw the valve rod or stem 38 upwardly and thereby compress the spring 40 and hold the valve 39 in the open position in which it is shown in Fig. 1. said valve always remaining open during the operation of filtering the water. also firmly hold the valve 39 on its seat when permitted so to do, as when the handle-nut 47 is worked upwardly on the upper thread The spring 40 will 4 ed end of the valve stem or rod 38 to permit W hen it is I if necessary, the cover plate being removed for that purpose. It is desirable that a spare filter be carried to be installed in the compartment 14 whenever it should become necessary to remove the filter therefrom for the refilling of the container or for other purpose. The provisionof the large cover plates 22, 23 permits ready assembly of the interior parts of the compartments 13, 14.

The drain pipes 17, 20 are provided to facilitate the cleaning out of the compartments 13, 14.

It is desirable to boil out the filtering material in the container 34 when the same becomes foul, and to this end I provide. a steam connection 48 which enters the chamber of the housing 42 above the valve 39. On ceasing the filtering operation, opening the drain pipe 20 and closing the valve 39, steam may be admitted to the housing 42 and interior of the cone 35 for boiling out the filtering material, the oil or grease being forced therefrom outwardly through the perforated walls of the container 34 and finally run 03 through the drain pipe 20.

The compartment 14 is equipped withlargely be understood from the description hereinbefore presented. The compartments 13, 14 may be primarily filled with water tothe proper level or this body of water may result from the water of condensation. The exhaust steam fro-m the heater coils in the oil tanks enters the compartment 13 below the water level therein and the plate 11 serves to confine as far as possible the entrained oil or grease to the compartment 13 so that the same may ascend through the water and flow into the scum-pan 16 and be carried away through the discharge connections 33. The partly cleansed water flows over the weir-plate 12 into the compartment 14 and becomes filtered by passing through the bed of filtering media held by the container or shell 34, said water passing into the cone or equivalennt hollow perforated core 35 and flowing thence to the delivery outlet pipe 19 for filtered water.

What I claim as my invention and desire to secure by Letters Patent, is

1. Apparatus of the character described comprising a tank containing a body of water, means for adding thereto accumulations of water arising from condensed steam, a hollow housing secured on the bottom of said tank and affording a valve seat and being connected with the discharge for filtered water, an upper housing secured on said hollow lower housing and affording a guide for a valve-rod, a valve adapted to said seat, a valve rod extending upwardly from'said valve, a spring on said rod acting 1 to force the valve to said seat, a filter subsaid valve rod extends and from which the filtered waterissues, an exterior perforated container having a bottom to which said core is secured and a removable top plate and a filling of filtering media within said container exterior to said core, and a nut on the upper end of said rod and engaging the upper end of said core for maintaining the filter on its seat and said Valve normally open; in opposition to the force of said sprin 2. pparatus of the character described comprising a tank containing a body of water, means for adding thereto accumulations of water arising from condensed steam, a hollow housing secured, on the bottom of said tank and affording a valve seat and being connected with the discharge for filtered water, an upper housing secured on said hollow lower housing and affording a guide for a valve-rod, a valve adapted to said seat, a valve rod extending upwardly from said valve, a spring on said rod acting to force the valve to said seat, a filter submerged in said body of water and seated on said upper housing and comprising a hollow perforated core up through which said valve rod extends and fro-m which the filtered water issues, an exterior perforated container having a bottom to which said core is secured and a removable top plate and a filling of filtering media within said container exterior to said core, a nut on the upper end ofsaid rod and engaging the upper end of said core for maintaining the filter on its seat and said valve normally open in opposition to the, force of said spring, and a nut on the upper end of said core for clamp-ing said top plate on said container.

'llO

3. Apparatus of the character described comprising a tank containing a body of water, means for adding thereto accumulations of water arising from condensed steam, a hollow housing secured on the bottom of said tankand affording a valve-seat and being connected with the discharge for filtered water, an upper housing secured on said hollow lower housing and affording a guide for a valve-rod, a valve adapted to said seat, a valve rod extending upwardly from said valve, a spring on said rod acting to force the valve to said seat, a filter submerged in said body of water and seated on said upper housing and comprising a hollow perforated core up through which said valve rod extends and from which the filtered water issues, an exterior perforated container having a bottom to which said core is secured and a removable top plate and a filling of filtering media Within said confor use in boiling out the filtering media tainer exterior to said core, a nut on the When desiredand when said valve is closed. upper end of said rod and engaging the Signed at New York city, in the county 10 upper end of said core for maintaining the of New York and State of New York, this filter on its seat and said Valve normally 7th day of September, A. D. 1920.

open in Opposition to the force of said spring, and a steam inlet to said housing 7 HOWARD C. DAVIS.

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