US1183417A - Blower device for cleaning tubes. - Google Patents

Description

H. ZEITL BLOWER DEVICE FOR QLEAMNG wBEs.

APPLICATION mic uov13o, 1914.

Patented May 16, 1916.

bf i M/l NA 2 1 71 Ill- Q E k Wflwsscs 5 %Ja4mm1 UNITED STATES PATENT QFFICE.

HERMANN ZEITZ, 0F HAMBURG, GERMANY, ASSIGNOR T0 SCHMIDTSCHE HEISSDAMPF- GESELLSCHAFT M. B. H., O]? CASSEL-WILHELMSHfiHE, GERMANY, A CORPORATION OF GERMANY.

BLOWER DEVICE FOR CLEANING TUBES.

Specification h Letters Patent.

Patented May 16, 1916.

Application filed November 30, 1914. Serial No. 374,940.

To all whom it may concern:

Be it known that I, HERMANN Znrrz, a subject of the Emperor of Germany, resid ing at Hamburg, Germany have invented certain new and useful Improvements in Blower Devices for Cleaning Tubes, of which the following is a specification.

My invention relates to blower devibes for removing soot, ashes, and the like from boiler tubes and particularly to those of the type in which the distance of the nozzle orifice from the tube plate can be varied in such a manner that the jet serving as the cleaning agent passes over the tube ends in a spiral path. r-

My invention resides in certain details of.

construction as willhe more particularly set forth in the description and claims which follow. The object of my invention is to make devices of the character specified more eificient as well as more convenient and certain in operation.

My invention will be better understood by referring to the drawings in.which Figures 1 and 2 show vertical sections.

through blower in the inoperative/and operative positions respectively, and Fig. 3 a modification of a spindle with two nozzle orifices.

The blower constructed according to the present invention (me Figs. 1 and 2) comprises a casingb arranged in fluid-tight relation to the tube a and having a flange 6 by means of-which it may be secured by screw bolts to the appropriate wall of the boiler. The casing b is further provided with a branchb, through which steam is supplied and with a cover 1 t9 which an internally threaded boss 9 is connected by the arms f.' The casing?) with its cover f and boss gserves' to receive and guide a spindle d the rear end of which is threaded to correspond with the threads-of the boss g. The spindle d is solid in the neighborhood of its threaded portion but for the remainder of its length is hollow and is provided near its rear end of the hollow portion, with a col-- sponding surface f (see Fig. '2) provided on the cover f. Behind the collar 03 the r ed, if two or more orifices, such hollow spindle is prmided with a few holes :12 which allow the steam or other fiuid used for cleaning the tubes to pass from the casing 5 into the interior of the hollow portion of the spindle (Z except when the collar d is in the position shown in Fig. 1.

Stuihng boxes h and are provided in the cover f and casing .71 respectively to prevent leakage from the casing along the spindle.- The gland of the stufling box 6 is secured in position by a ring 0' which is screwed or otherwise adjustably insertedin the 03' 1g. At its front end, the spindle d is provided with a cap in which is protected by the tube (1. when the spindle is withdrawn to its inoperative position. If the spindle d is rotated from this position, it advances and the cap or nozzle Ir: projects from the tube a'while simuitaneously communication between the interior 0 the casing and the hollow portion of the spindle d is established so that the fluid serving for cleaning purposes" can enter the spindle through the holes a) and escape through the orifice k. t 1

The cap la is provided either with asingle orifice as in Figs. 1 and 2, or with a 111- rality of orifices, preferably two, In an [02, as in Fig. 3, arrangedat different anglesto the axis of the spindle d. The ilongerthe path traversed by the jet issuingfrom the tral axis of the spindle, d, 'during the begin- 1 ning of the forward movement of the dle, kl, those tubes less remote being nextja f; fected as the spindle is fed forward. until finally when the spindle is fed forward to its full extent, the steam jet will strike those tubes in the immediate neighborhood'of, the axis of the spindled produced.

' If only one orifice k is provided in the cap k, the travel of the spindle d must approximately correspond'to the distance between the front and rear walls of the combustion'chamber since the orifice k is {hrranged at such an angle thatQthe jet'i'of steam issuing from it strikes the outermost smoke tubes at the beginning of the forward movement of the spindle d. The travel-i the spindle,'however, can be consideiiib ic are arranged at different angles to the axis of the spindle, and the entire group of smoke tubes concerned can then be cleaned. in a shorter time,

If the blower is used for a single-ended smoke-tube boiler it may be inserted in tube passing from the rear plate of the boiler Lo the rear wall of the combustion chamber, w l? in the case of a (.lOlllJikkllflEil boiler (see 5} the blower n1 Ye attachcrl lo one of the smoke tube selves; in both ca. the tube in which the blower is inscrtei; is arranged in the center of the group of smoke tubes concerned.

A blower according to the present invention considerable advantages compared with those herelofore proposed. T hns in. comparison with prior blowers ing a. fixed the present inve tion is simpler in construction and mor ily ooeratecl while ember orifice better atlapierl for the purpose in quesL-ion, liloreover, as compared w ith blowers ha viiig a movable casing, the pre ent invention dislinguisheil by its r, l llil. low spin are '5 of L :5; provided u only one orifice provided with two or more such orifices inclined at different air glee so the longiiurlinal of the spindle, the fiuicl strikes the tubes under extremely favorable conditions unrl a very effective action insured.

ln the above description it has been as sumerl the; sieani is used as the pressure medium anal this in general will be m at convomml; ii: lmwrier, obvious that any other suitable gaseous pr re medium, such for instancews compressed air, may be employed if tlesirerl,

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, l declare that, what 1 claim is:

l, In a blower device for cleaning tubes, in combination, a hollow spindle having a nozzle orifice at one end thereof and a se rate inlet aperture, a collar upon said s3, dle adjacent to the inlet aperture upon the side toward the nozzle orifice, a fixed casing having walls which are spaced from and C011 stitute astearn tight closure about the said inlet aperture and in which casing the spindle may be axially moved, sci-Ll casing being also provided with a seat agains which lbeaforesaid collar may be aborted thereby closing said inletaperture, and an inlet for said casing adapted to be connected with a source of steam supply.

In a blower device forcleaning tubes in combination *ith a stationary casing having an inlet for the cleaning liquid to be supplied, of a spindle movably mounted in the casing and passing therethrough at both or I said spindle being hollow at its forward einl and having its rearward end screw threaded, a threaded boss on the casing enging with the il'u'eadecl end of the spindle, of an inlet port in said spindle, of a collar arranged around said inlet port, a correspondingly formed portion in the casing against which the aforenamecl collar abuts thereby closing the inlet port, when the spindle is in its rearmost position, and a discharging orifice at the forward end of the spindle.

3. In a blower device for cleaning tubes in combination with a stationary casing having an inletfor the cleaning liquid to be supplied, of a spindle movably mounted in the casing and passing therethrough at both ends, said spindle being hollow on its forward end and having its rear end screw llirearled, a threaded boss on the casing eugaging with 'Ehe threaded end the spindle,

sleaze-tight joints on each end of the oasing, of means for actuating said spindle, of an inlet portin said spindle, of a collar arranged around said inletport, a correspondingly formed portion in the casing against which the afore-named collar abuts, thereby closing the inlet port when the spindle is in its real-most position, and a discharging nozale on the forward end of the spindle.

l. In a blower device for cleaning tubes in combination with a stationary casing havan inlet for the cleaning liquid to be supplied, of a spindle movably mounted in the casing and passing therethrough at both ernis, said ,spindle being hollow on its f0rward end and having its rearward end screw threaded, a threaded boss on the casing en gaging with the threaded end of the spindle, of steam-tight joints on each end of the casing, of means for actuating said spindle, of an inlet port in said spinrlle, of a collar arruugcrl around said inlci port, a correspon lingly 'l'orinecl porrion in lhe casing against which the afore-named collar abuts, thereby closing the inletport when the spindle is in its rearmost position, and of a plurality of orifices inclined at (lill'crcnt angles to the longitudinal axis of the spindle.

HERMANN ZEITZ.

Images