US1115485A

US1115485A - Boiler-cleaner.

Info

Publication number: US1115485A
Application number: US78261013A
Authority: US
Inventors: Leo Jno Bayer
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-08-02
Filing date: 1913-08-02
Publication date: 1914-11-03
Anticipated expiration: 1931-11-03

Description

L. J. BAYER.

BOILER CLEANER.

APPLIOATION FILED AUG. 2, 1913.

191 15,485. Patented Nov. 3, 1914.

2 SHEETS-SHEET 1.

ILVVENTOR.

Leo r/b/m Bayer- B gll fmg ATTORNEY.

L. J. BAYER. BOILER CLEANER.

APPLICATION FILED AUG. 2. 1913.

1 1 1 5,485. Patented Nov. 3, 1914.

2 sums-sum '2.

IXVI 'ENTOJL Leo dblm Bayer- ATTORNEY.

LEG JNO. BAYER, OF ST. LOUIS, MISSOURI.

BOILER-CLEANER.

intense.

Specification of Letters Patent.

Application filed August 2, 1913.

Serial No. 782,610.

To all 107L077), it may concern Be it known that I, LEO JoHN BAYEn, citizen of the United States, residing at St? Louis, State of Missouri, have invented certain new and useful Improvements in Boiler-Cleaners, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in boiler-cleaners; and it consists in the novel details of construction more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure l is a vertical middle section of the front end of one form of a conventional fire-tube boiler showing a special form of my invention applied thereto; Fig. 2 is a' combined elevation and vertical cross-section on the zig-zag line 22 of Fig. 1; Fig. 3 is an enlarged side sectional elevation of the swing or expansion joint to which the jet pipe 1s attached; Fig. 4: is an enlarged cross-section on the'line 44- of Fig. 3; Fig. 5 is a sectional detail showing the opening in the fine-cap or door for the passage of the operating stem; Fig. 6 is a combined sectional and elevational detail showing the connection between the operating stem and the rotatable male section of the swing-joint; Fig. 7 is a front elevation of another form of boiler showing a modified form of my invention applied thereto; Fig. 8 is a horizontal section on the line 8--8 of Fig. 7; and Fig. 9 is a vertical section on the line 9-9 of Fig. 7. V

The object of my invention is to construct a device suitable for cleaning or removing soot, cinders, ashes and other mate,

rial usually'accumulating on the inside of the lines or tubes of'fire-tube boilers, the means employed being in the form of a suitable tubular member or pipe oscillating in front of the discharge ends of the tubes and being provided with nozzles properly distributed to successively direct jets of steam (or equivalent medium) into the series of tubes, said jets traversing the tubes and scouring their inner surfaces of the accumulations referred to. In the present embodiment of my invention such oscillating member is mounted in the smoke-box of the boiler-furnace, this arrangement serving in a measure to dry and superheat the steam before the same is projected into the tubes.

A further object is to so mount the cleaner member 3.

as not to interfere with the opening or closing ofthe flue-cap or smoke box doors, the cleaner possessing further and other advantages better apparent from a detailed description of the invention which is as follows:

Referring to the drawings, and for the present to Figs. 1 to 6 inclusive, S represents the boiler shell, 2. the fire-tubes or flues, a the tube-sheet, B the smoke-box or exit flue, and D the horizontally hinged fluecap' or door of the smoke-box as well understood in the art.

Leading from the steam space of the boiler s a steam-supply pipe 1 in thepath of which is disposed a control valve V of any approved design, a drip-cock 2 being interposed between the steam supply 'source and the valve so that the waterof condensation may be properly drained before the steam is allowed to pass through the valve-casing to its ultimate point of consumption. A section of the pipe 1 enters the smoke-box B where it is subjected to the heat of the combustion products, the steam being in a measure superheated before its final discharge, the pipe being preferably supported 1n the smoke box by a bracket or equivalent The pipe 1 terminates in the smoke-box in a T 4: the inner end of whose horlzontal leg serves as the female section of a swing or expansion joint, the male section 5 of which rotates freely in said female, and passes through a stuifing box or gland It. By means of an elbow e the member 5 is coupled to the jet pipe 6 which is closed at its free end, but is provided with properly distributed peripheral teats, nipples or nozzles 7 facing the tube-sheet a and discharging into the ischar e ends of the several tubes 2; with an osc1llati0n of the pipe about the axis of the joint 5. The op posite or outerend of the T 4 is closed by a plug 8 through which and through a terminal stuiiing-box Jr of which operates arotatable stem 9 whose inner end is fastened to the spider or perforated disk 10 secured to the inner end of the joint 5. The preferred manner of making the connection is illustrated to best advantage in Figs. 3, at, 6, the stem 9 being provided with an inner reduced square (or polygonal) portion 9 which is bounded on either side by screwthreaded portions 9-, the portion 9 being received by a corresponding opening in the spider 10, after whic lock on jam-nutsn are Patented Nov. 3, 19146 passed over the portions 9", 9, and against the spider, thereby completing the connection. To the outer end .of the stem 9 is swiveled an extension 11 passing loosely through an opening o in the flue-cap D, and oscillatable vertically or in the plane of oscillation of said flue-cap. The outer end of the stem 11 is provided with a removable hand-wheel 12.

The operation of the cleaner is substantially as follows :The axes of-the T 4, stem 9, and that of the joint 5 are coincident, the axis of the pipe .6 being disposed at right angles to that of the joint 5', the pipe sweeping in a plane parallel to the plane of the tube-sheet a and across the'{ paths of discharges from the tubes 25 into the smoke-box. When the flue-cap D is closed (Fig. 1) the axis of the extension 11 of the stem 9 is coincident with the axis of the member 9, so that if rotation is imparted to the member 11 (through proper manipulation of the handwheel 12), a corresponding rotation will be imparted to the stem 9, and joint section 5, and an oscillation or sweep will be imparted to the j et-pipe 6. .If previously, the valve V is opened so as to admit dry and superheated steam into the T 4, the fluid will escape in the form of dry steam-jets through the nipples or teats 7, and, with the oscillation of the pipe 6 in proper direction, said jets will be forced successively into the several tubes 25, the nipples being so distributed that each 'tube 25 will receive 1ts proper quota of steam as the pipe 6 isswung around in front of the tube-sheet a. In the present embodiment of my invention the steam jets are forced against the natural draft through the tubes 25, but since only a comparatively few tubes are cleaned or blown at any one time, the normal draft of the boiler is not materially interfered with. On the contrary it'is increased, because the steam escaping from the rear ends of the tubes expands, increasing the combustion, the natural draft thereby being increased toward the flue or smoke: box B through the tubes not being blown.

The steam jets in traversing the several tubes or flues t scour the inner surfaces of the same thus cleaning them of all accumulations of soot, ashes, dirt, cinders and other material.-

When occasion arises to gain access to the interior of the smoke-box B, the hand-wheel 12 is removed, and the door D is swung outwardly. The walls of the opening 0 are made tapering so as not to bind with the member 11, the latter by reason of the sw vel joint m freely re'spondin to the swinging movement of the door (being depressed with the outward swing of the door as shown by dotted position of the parts, Fig. 1) and when the link 11 has slipped out, of the opening 0 the door I) may be swung outwardly any desired degree (Fig. 1). Features shown but not alluded to are well known in the art and require no description in the present connection.

In some cases the smoke-box doors (especially where cast iron doors are used) swing in a vertical plane, being hinged about a vertical axis on each side of the smokebox. Such a modification is shown in Figs. 7 to 9 inclusive where the doors D, D, close over and against the rotatable stem 11. In

this modification the stem 11 need not be provided with a swivel joint such as m, the stem 11 being rigid and comprisinga single member secured directly to the member 10, a rotation of said member 11 about its axis imparting a sweep to the jet-pipe 6 the same as in the first construction described. In

, fact, with the exception of the stem 11 and doors D, the modification is identical with the construction illustrated in Figs. 1 .to 6 inclusive. Naturally too, the use of vertically swinging side doors such as D imparts a slightly different vertical longitudinal section to the smoke-box B (compare Figs. 1 and 9). In either case the axis of oscillation of the jet-pipe 6 corresponds to the axis of the swing joint 5, said axis being so disposed and the jet openings 7 so distributed that as the pipe 6 swings or sweeps about said axis, the steam jets (where steam is employed) will be projected through the entire series of tubes t and the boiler thoroughly cleaned (Fig. 2); Obviously, I need 7 not restrict myself to,'the precise details here shown; neither need the invention berestricted to tube boilers, any flue-boiler being herein contemplated. It (Fig.2) represents a bar by which the valve V may be actuated, being an expedient well understood by the skilled mechanic.

Having describedmy invention, what I claim is 1. In combination with a tubeboiler and smoke-box thereof, a movable flue-cap for the smoke-box, a tubular member permanently mounted in the smoke-box and adapted to sweep in a plane disposed across the path of discharge of the tubes into the smoke-box, means permanently disposed in the path of the combustion products traversing the smoke-box for delivering a cleaning medium to said member, the latter being perforated peripherally to discharge cleaning jets into the several tubes with the sweep of the member in the plane aforesaid, and means operating through the flue-cap for controlling said member from a point outside the smoke-box.v

2. In combination with a tube-boiler provided with an exit-flue for the combustion products, a steam-supply pipe having a section thereof permanently disposed in the path of said combustion products, a jet-pipe leading from and communicating with said section and permanently confined in the flue and oscillating in a plane across the discharge ends of the tubes, a movable flue-cap for the flue, means operating through the flue-cap for controlling said jet-pipe, the latter being provided with perforations adapted to discharge steam into the several tubes with an oscillation of the pipe in either direction,

3. In combination with a tube-boiler and smoke-box thereof, a steam supply-pipe traversing the smoke-box, a hinged flue-cap for the smoke-box, a swinging jet pipe leading from and communicating with the supply-pipe and permanently positioned in the smoke-box and oscillating across the path of discharge of the combustion products from the fire-tubes into the smoke-box, a member for imparting a swinging movement to the jet-pipe, a swiveled extension coupled to said member and responsive to the oscillations of the flue-cap, said extension passing through the flue-cap and being controllable from a point outside of the flue-cap for a closed position of the latter, the jet-pipe being provided with peripheral perforations for projecting the steam into the boiler tubes through the discharge ends thereof.

4. In combination with a tube-boiler, a smoke-box having a movable front, a steam supply pipe having a section permanently confined in the smoke-box and terminating in a T opposite the tube-sheet, a hollow rotatable joint member in said T communicating with-the supply-pipe, a jet pipe coupled to the joint, and oscillating in a plane parallel to the tube-sheet and provided with peripheral discharge openings facing the adjacent ends of the tubes, a spider in the joint member, and a rotatable stem secured to the spider and projecting through the movable front of the smoke-box, the axis of the stem being coincident with the axis of the spider and of the joint-member.

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

LEO JNO. BAYER.

Witnesses:

EMIL STAREK, Joe. A. MICHEL.