US1035877A - Device for collecting sediment in steam-boilers. - Google Patents

Description

E. P. HEWITT.

DEVICE FOR COLLECTING SEDIMENT IN STEAM BOILERS.

APPLICATION IILED FEB.16, 1912.

1,035,877. Patented Aug. 20, 1912.

2 SHEETS-SHEET 1.

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DEVICE FOR COLLECTING SEDIMENT IN STEAM BOILERS.

APPLICATION FILED rmme, 1912.

1,035,877. Patented Aug. 20, 1912.

2 SHEETS-SHEET B.

OOLUMBIA PLANDOIAPH 50., wIuMlNaroN. n. c.

EDWIN P. HEWITT, OF SPOKANE, WASHINGTON.

DEVICE FOR COLLECTING SEDIMENT IN STEAM-BOILERS.

Specification of Letters Patent.

Patented A11 20, 1912.

Application filed February 16, 1912. Serial No. 678,082.

To all whom it may concern Be it known that I, EDWIN P. Hnwi'r'r, a citizen of the United States, residing at Spokane, in the county of Spokane and State of \Vashington, have invented certain new and useful Improvements in Devices for Collecting Sediment in Steam-Boilers; and I do hereby declare the following to he 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 devices for collecting sediment in steam boilers and. the object is to provide improved means for separating the sediment from the water as it enters through the feed pipe and collecting such sediment below the separating device in a chamber from which it may readily be blown off.

A further object is to provide means for collecting oil which may be admitted with the water and retaining the same in pockets suitably located in the sediment collect-or.

WVith these and other objects in view the invention consists in the novel construction hereinafter described and claimed.

Briefly described, the invention includes a collecting device in the form of a partly cylindrical member mounted within the boiler and beneath the fire or smoke tubes, with a trough-like member formed in the upper portion of the cylindrical device and separated therefrom by a perforated partition member. The partition member carries devices intended to form pockets for retaining oil which may be admitted with the water.

' The lower cylindrical member is connected with a source of water supply and upon opening suitable valves the pressure within the boiler operates to blow off the sediment from the collector, suitable means being provided for properly directing the pressure within the cylindrical member for the purpose stated.

In the accompanying drawings forming part of this application :Figure 1 is a view partly in vertical section and partly in elevation of a boiler and boiler setting, showing my improved device in operative position. Fig. 2 is a sectional View of the boiler with the collector properly mounted therein. Fig. 3 is a view of the furnace structure in front elevation. Fig. 4 is a perspective view of the separating and collecting device. Fig. 5 is a top plan View. Fig. 6 is a View in vertical transverse section. Fig. 7 is a view in elevation of one of the oil collecting devices carried by the perforated partition member separating the trough and the cylindrical member. Fig. 8 is a vertical section of one end of the cylindrical member showing a battle plate therein.

In carrying out my invention, I mount the device in a boiler of ordinary construction such as 10, the boiler being located within furnace structure 15. A manhole 16 is provided for the purpose of admitting the sediment collector, and the upper outer doors are indicated by 17 and 18 and the lower doors by 19, 20, 21 and 22.

The separating and collecting device is shown in detail in Figs. 1, 5 and 6 and comprises a lower receptacle 25, which may be partly cylindrical in cross section, and an upper trough-like member 26 which may be formed by bending the walls of the cylindrical member so that the upper portions there of will be flared outwardly and if desirable suitably curved to form the trough. The lower portion of the trough is in the form of a concave partition member 27 which may be riveted to the sides of the device specified, just above the bond 28. Perforations 29 which may vary in size, as shown in Fig. 5, are formed in member 27 and connected with these perforations are nipples or cuplike devices 50, shown in detail in Fig. 7 and provided with upper threaded portions 51 and with a hexagonal portion 52 to facilitate the placing of the devices in position. These devices 50 are intended to retain the oil which may be admitted with the water and which will float in the upper portion of the cylindrical receptacle 25. At one end of receptacle 25 a battle plate 55 is located, being suitably supported by means of a stem 56 and provided with apertures 57. Upon opening the blow'ofi described below, boiler pressure will be admitted by means of aperture 58 normally closed by trap 59 and will cause the sediment within receptacle 25 to be discharged through the pipe 30. The baffle plate causes the pressure to be exerted especially at points adjacent the walls of the cylinder and insures thorough cleaning. The supply pipe is indicated by 30 and is connected with receptacle 25 at the point 31. Feed pipe 32 is connected indirectly with pipe 30 and is supplied with valves 33, 34 and 35, the latter constituting a blow-off valve, by means of which the sediment is discharged from receptacle 25 after the water has been cut off by valves 33 and 34. Extending between valve 35 and the boiler head 36 is a pipe 37 which connects with pipe 38 passing through the boiler head and is joined to pipe 39 by means of a union 40. After the sediment collecting device has been inserted through manhole 16, it is only necessary to connect the pipes 30 and 39 by means of union 40 in order that the apparatus may be placed in operation.

Referring to Fig. 2, it will be observed that arms 45 support the collecting device proper and that these arms are in turn sup ported by stay rods 46.

Further describing the operation, it may be stated that water is admitted through the supply pipe and passes from receptacle 25 through perforations 29 into trough member 26 which is open at its upper side and provides for the admission and circulation of water already in the boiler. The action of the partly heated water entering the boiler and meeting the heated water already in the boiler causes a chemical action which will separate the foreign matter from the water, allowing it to form in a trough and to pass through the apertures into the lower chamber where it remains until the blow-off valve is opened. The latter allows the sediment and other matter to be expelled from the water by the pressure within the boiler. The oil, as previously intimated, will be blown off during this operation.

hat I claim is:

1. In a device of the class described, an upper receptacle adapted to be located in a steam boiler, said receptacle constituting a trough and having a bottom provided with perforations, a lower receptacle having imperforate side walls, means for feeding water under pressure to the boiler through the lower receptacle and through the upper receptacle, and means permitting the discharge of sediment from the lower receptacle through the means for feeding the boiler and by direct boiler pressure when the pressure first mentioned is reduced.

2. In a device of the class described, a plurality of receptacles separated by a perforated partition, means for supporting the receptacles in a steam boiler, means for admitting water to one of the receptacles and for effecting the discharge of sediment therefrom, such partition acting as a separating device for sediment and a preliminary collecting device, and oil retaining devices carried by the partition.

3. In a device of the class described, a boiler and a separating device located therein said device last mentioned including upper and lower receptacles, a perforated partition separating the receptacles, oil retaining devices carried by the partition, means for admitting water to the lower receptacle, a feed pipe connected with said means, a valve in the feed pipe, and a blowoff valve also connected with the feed pipe, the latter admitting water to the lower receptacle, and the blow-off valve permitting the discharge of sediment therefrom when the feed is stopped.

4. In a device of the class described, an upper receptacle located in the steam boiler and arranged to permit the free circulation therein of the water in said boiler, a lower receptacle, a perforated partition member between the receptacles, nipples constituting oil retaining devices secured to the parti tion member and connected thereto at points registering with the apertures, and means for admitting water to the lower receptacle.

5. In a device of the class described, an upper receptacle constituting a trough and having a bottom with graduated perforations therein, nipples registering with the perforations, a lower receptacle having imperforate side walls located beneath the trough, means for feeding water under pressure to the boiler through the receptacles, and means permitting the discharge of sediment from the lower receptacle by direct boiler pressure upon reducing the pressure first mentioned.

6. In a device of the class described, a receptacle arranged to be located within a steam boiler and having connection with a water supply pipe, means connected with the receptacle for preventing the passage of sediment to the boiler, means for admitting boiler pressure to the receptacle, and a perforated plate the outer edges of which tend to converge with the surface of the inner walls of the receptacle for distributing said pressure about such walls.

7.'In a device of the class described, a receptacle arranged to be located within a steam boiler and having connection with a water supply pipe, means connected with the receptacle for preventing the passage of sediment to the boiler, means for admitting boiler pressure to the rece tacle, and a perforated baffle plate having a concave surface the outer portion of which plate tends to converge with the inner surface of the walls of the receptacle for the purpose of distributing fluid about such surface.

In testimony whereof I afiiX my signature in presence of two witnesses.

EDI/VIN P. HE WITT.

H. W. SMITH.

Qopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.'

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