US1151464A - Siphon-blower. - Google Patents

Description

J. L. HOUSTON.

v SIPHON BLOWER.

APPLICATION FILED MAY 1, I9I5. 1,151,464. Patented Aug. 24, 1915.

2 SHEETSSHEET I.

IO N

INVENTOI? M47 M JbhnL. Houston QMg J. L. HOUSTON.

SlPHON BLOWER.

APPLICATION FILED MAY 1915.

1,151,464. Patented Aug; 24, 1915. v 2 SHEETS-SHEET 2. 7.2-; .5.

WITNESSES AAZWM INVE/V 70/? JOHN LAWRENCE HOUSTON, F POUGHKEEPSIE, NEW YORK.

SIPHON-BLOWER.

Application filed May 1,

To all whom it may concern:

Be it known that 1, JOHN L. HoUs'i'ox, a citizen of the United States, and a resident of Poughkeepsie, in the county of Dutcliess and State of New York, have invented a new and Improved Siphon-Blower, of which the following is a full, clear, and exact description.

This invention relates to siphon blowers- Specification of Letters :Pateut. PatentcdAug. 24, 1915.

1915. Serial No. 25,281.

Figure 1 is a longitudinal section of a boiler having material removing devices applied to the ash-pit and to the rear part of the furnace; Fig. 2 is a transverse sectional view of the firebox portion of the furnace; Fig.3 is an enlarged sectional view of the material ejector or siphon blower;-Fig. 4 is a plan View with portions ofthe device in section; and Fig.6 is a View showing the or material ejector-s especially adapted for branch discharge conduit whereby ashes can furnaces, econoniizers and the like, whereby ashes, soot, fine coal and other material can be discharged quickly, effectively, economically and with a minimum of labor.

The invention has for its general objects to improve and simplify the construction of material removing apparatus of the character referred to so as to be reliable and efiicient in use, comparatively simple and inexpensive to manufacture, install and keep in operative condition, and so designed that I ,fine material can be discharged without caus- 'mg dust to rise, and without undue noise being created bythe operation of the ap paratus.

A more specific object of the invention is the provision of a material discharging debe removed from thafurnace or fine coal rcturned to the feed hopper of the'stoker.

Referring to the drawing, 1 designates the masonry work of a furnace which is constructed with a fire-box 2 having grate bars 3, and under the grate bars is an asl1-pan at which slopes to an outlet opening 5. Di

rectly under the ash-pan is the siphon blower or material removing ejector A,

whereby ashes can be removed by fluid pres sure. I This device A is constructed as shown in detail in Figs. 8 and 4, and it consists of a hopper 6 having at its throat 7 a slide valve 8 which is normally closed. Under the throat 7 is an ejector chamber 9 connected with'a discharge conduit 10, and in line with this conduit is an ejector tube 11 vice which embodies a hopper that receives from which steam, water and air discharge the material to be discharged, and coiiper under considerable force, whereby the matcating with the hopper is an ejector which rial from the hopper (3 is driven out of the utilizes steam as the ejecting agent, and "in conduit 10 when the valve 8 'ls opened. addition water is caused to flow through tlie-f llh ejector tube 11 is connected with a couejector by the action of the steam, whereliy/pling 12 which forms the body of the ejecthe material is moistened so that'dust is p'ftor, and connected with this coupling is a vented from rising, and in order to avoid steam/simply pipe 13. Extending through undue noise an air vent pipe isconnccted able force.

A further object of the invention is the application of a material removing device of the character referred to, to a furnace for i the double purpose of removing the ashes and for returning the fine coal that sifts through the grate bars to the hopper or bin from which coal is fed automatically to the grate bars in the operation of the furnace.

In the accompanying drawings, which illustrate one embodiment ofthe invention,

i and wherein similar characters of reference indicate corresponding parts in all the views,

(irawnthe coupling is a straight suction tube 14 'arranged coaxially with the ejector tube 11,

but'it is ofismaller diameter than the latter, so that an annular steam passage 13 is provided through which steam passes so as to create a suction at the end 15 of the tube 14. This tube is connected by a. pipe 16 with a source of water which may be under a head of six inches or a foot, so that water tends to How bygravity to the ejector, or which may be disposed below the level of the ejector so that the latter will suck the water from the said source. The Water tube of the ejector is connected with an air pipe 17 which has its upper end above the top of the tank of Water, so that water cannot iiow out when the device is not in operation, and bymeans of this air pipe air is sucked into the ejector, and as a consequence timepparatus will op crate almost noiselessly, and as the water flows to the device by suction or only a slight head, suiiicient water will be utilized to moisten the material being removed, to such an extent that the material will freely flow through the discharge conduit without slide valve 8 is shown connected by a link 18 with an operating lever 19, whereby the fireman can conveniently operate the slide valve, and in the steam pipe 13 may be provided a cut-oli valve 20, which valve is normally closed and is adapted to be opened only when the ashes are to be removed. As

-.shown in Fig. 2 the water tank .21 is'disposed above the ejecting device A, and the air pipe 1? has its upper open end disposed above the top of the tank.

It may be desirable to use the ejecting apparatus A for returning to the hop-per of the furnace stoker the fine coal that Sifts through the grate bars 3, and-for this purpose the pan 4 is extended upwardly to the side Walls of the furnace, and swinging valves or gates 22 are hingedly mounted in the pan at points adjacent the bottom of the grate bars, so that when the valves are in the normal or full-line position shown in Fig. 2, the fine coal that sifts through the grate bars will be collected and not mixed with the ashes passing by the clinker bar 23. -After the ashes have been removed by the ejecting device the gates or valves 22 can be opened so that the fine coal'Will pass to the hopper of the ejecting device, which can be operated to discharge the fine coal back into the bin B of the Stoker. F or this reason the discharge conduit 10 will be provided with two branches 10 and 10, Fig. 5, for discharging" ashes and coal respectively, the branch 10 leading upwardly to the top of the hopper or bin for the stoker of the furnace. A gate or valve 10 is operated by a handle 25, Fig. 1, so as to connect either branch pipe with the ejecting device A.

The ejecting devices of the character referred to can be used in other places in the furnace or in economizers and similar apparatus where soot collects. Thus, in Fig. l a soot removing device C is arranged in the rear part of the furnace under the water This ejecting device is of the same construction the one previously described, and it receives steam from the steam pipe extension 13' controlled by a valve 13. A pan 6 catches the soot and other deposits. and under this pan is located the ejecting device which has a discharge with a drain opening 25 for the purpose of permitting water ofcondensation to drain off in case the steam valve should leak or be accidentally left open, it being important that the accumulation of water in the ejecting device be prevented, as the presence of water is apt to wet the material, that drops into the device when the slide 8 is open, too

much, so that the discharge conduit will become clogged.

From the foregoing description taken in connection with the accompanying drawings, the advantages ofthe construction and method of operation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the principle of operation, together with the device which I now consider .to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made when desired as fall within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent: 1. A loose material removin device com prising an ejector chamber, a ischar e conduit leading therefrom, a. hopper t rough which material passes to the chamber, 'a. valve between the hopper and chamber, an ejector tube leading into the chamber for. forcing material therefrom through the discharge pipe, a steam supply conduit con.- nected with the said tube, a water supply conduit communicating with the'tube and from which water is sucked by the ejecting action of the steam, and an air vent pipe v -pipe and having its other end open to the atmosphere, whereby the steam sucks on and water into the ejector.

3. The combination of a furnace grate, an ash collector under the grate, and a steam ejecting device connected with the ash collector for removing the ashes therefrom, said ejecting device having water and air supply means whereby water and air are mingled with the steam to form the motive agent for removing the ashes.

4:. The combination of a furnace grate, an ash pan thereunder, a hopper for receiving ashes from the said pan, a valve controlling the hopper, and an ejector chamber into which material enters from the hopper, a discharge pipe connected with the chamber, an ejector tube, means for supplying steam to the said tube, a water conduit extending into the said tube and from which water is discharged by the ejector action of the steam, and means for introducing air into the water.

5. The combination of a furnace including grate bars, an ash collecting means-- thereunder, means for collect ng. coal that" sifts through the grate bars, a valve between the said means for preventing coal from mixing with the ashes, and an ejector device disposed under the first mentioned means to remove the ashes therefrom and adapted when the said valve is open to remove the coal after the ashes have been removed,

The combination of a furnace having grate bars, means under the lower portions thereof for collecting ashes, means under the upper portions of the grate bars for receiving the coal that sifts through. the grate bars, valves between the said means for keeping the coal and ashes separated, and an ejector device utilizing steam and water for removing ashes from the first-mentioned means and thereafter removing coal from the second mentioned means when the valves are opened.

7. In combination, furnace grate bars, means under the same for collecting ashes, means for collecting coal that sifts through the bars, and a common fluid ejector for removing the ashes and coal separately from the said means. V

8. In combination, a furnace including grate bars, a coal compartment from which coal feeds to the grate bars, means into which ashes discharge from the grate bars, means for collecting coal that sifts through the grate bars, a valve between the said means, an ejector common to said meansfa discharge pipe through which ashes or coal is discharged by the ejector, said pipe having branches, one of which leads to the compartment for returning coal thereto, and a valve controlling the said branches.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN LAWRENCE HOUSTON. Witnesses:

NORMAN OHAMPLIN, DANIEL GORMAN.

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