US1970401A

US1970401A - Tinitfo statf j patfnt officf

Info

Publication number: US1970401A
Authority: US
Publication date: 1934-08-14
Anticipated expiration: 1951-08-14

Description

Au 14, 1934. SNOW 1,970,401

BOILER CLEANER Original Filed New. 19. 1923 2 Sheets-Sheet 1 llll\ ulllllll It I "IT-"III" N. L. SNOW BILER CLEANER Aug. 14, 1934.

2 Sheets-Sheet 2 Original Filed Nov. 19, 1923 lwuzhtoz ADI Patented Aug. 14, 1934 t me STATES renal 1,970,401 BOILER CLEANER Norman L.'Snow, New Canaan, Conn; assignor to Diamond Power Specialty Corporation, Detroit, Mich., a corporation of Michigan Renewed October 28, 1932 Application November 19, 1923, Serial No. 675,688 l I 5 Claims. 1 (01. 122-392) Theinvention relates to boiler cleaners and refers more particularly to that type having a rotary blower element adapted to discharge steam or the like upon the boiler tubes. One of the objects of the invention is the provision of a rotary blower element which is automatically rotated. Another object is the provision of a rotary blower element having nozzles through which the steam or the like is discharged upon the boiler tubes and by means of which the blower element is automatically rotated. A further object of the invention is the provision of means for insuring slow rate of rotation of the blower element.

With these as well as other objects in view, the invention resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings:

Figure 1 is a side elevation of a boiler cleaner embodying my invention;

Figure 2 is a sectional elevation thereof;

Figure 3 is a view similar to Figure 2 but showing a modified construction;

Figure 4 is an end view of still another modified construction.

1 is the blower element extending through the wall of the furnace and adapted to discharge jets of steam or the like upon the boiler tubes This blower element is connected to the stationary supply pipe 2 for supplying the steam or the like by a suitable swivel in the usual manner.

For automatically rotating the blower element 1 when the steam or the like is turned on, I have provided the same with the longitudinal series of nozzles 3, each having a portion 4 extending radially of the blower element and connecting thereinto and a transverse portion 5 at substan tially right angles to the portion 4, the arrangement being such that as the steam or the like passes through the nozzles, the reactive effort will rotate the blower element in a direction opposite to that taken by the steam or the like as it is discharged from the nozzles. These ndzzles also function to discharge the steam or the like upon the boiler tubes.

For compelling a slow rotative movement of the blower element, I have provided the disk 6 having a toothed or cammed periphery. This periphery is engaged preferably by rollers 7 upon the parallel upper and lower arms 8 and 9 of the rod 10 which is guided in the bearings 11 and is connected at its lower end to the piston 12 slidable within the cylinder 13. The position of the rollers '7 is such that when one roller is engageable with the. outer end of a tooth upon the disk, theotherroller is engageable in the, space betweenthe teeth, whereby the diskcom pels longitudinal reciprocation of the rod and also the piston. The cylinder 13 preferably contains a liquid and has a slightly greater internal diameter than the diameter of the piston to produce a limited clearance therebetween.

This dash-pot construction produces a damping secured uponthe blower element. Slow rotation of the blower element is assured by means of the dash pot l8 operated by the cammed or toothed disk 19 in the same manner as that of the mechanism disclosed in Figures 1 and 2.

As shown in Figure 4, the dash pct 20 may be applied to the rocking mechanism of a ratchet operated device for rotating the blower element, this rocking mechanism being actuated by suitable means such as a steam operated piston slidable in the cylinder 21.

For the sake of illustration, the invention has been disclosed as being incorporated in a boiler cleaner for cleaning parts of a boiler. It will be apparent, however, that the inventive principles disclosed may be incorporated in devices for cleaning similar types of apparatuses. It is to be therefore understood that the term boiler wherever used throughout the specification and claims, is to be construed as meaning a fluid heater or heat transfer apparatus of any character, while the term boiler cleaner is to be construed as meaning a cleaner for any such apparatus.

What I claim as my invention is:

1. In a boiler cleaner, the combination witha rotary blower element, of means for rotating the same, a cam member operated by said blower element, and means operated by said cam member for opposing resistance to the rotation of said blower element.

2. In a boiler cleaner, the combination with a rotary blower element, of means for rotating the same, a cam operatively connected to said rotary blower element, and a dash pot operated by said cam for opposing a resistance to the rotation of said blower element.

3. In a boiler cleaner, the combination with a cleaning fluid supply pipe, of a rotatable blower element provided with. a discharge nozzle adapted to discharge cleaning fluid from. said supply pipe toward parts of the boiler to be cleaned, said nozzle being so directed as to utilize the reactive force of the cleaning fluid being discharged, to impart rotation to said blower element, and means acting in opposition to said blower element rotating means to dampen the rotation of the blower element under the influence of the said blower element rotating means, saidimeans including a cam member and a roller engageable with the said cam member; 7 1 r v 4. The combination with a rotatable blower element and means for rotating the said element,

of means for dampening and regulating the speed of rotation of the said element, said last mentionedmeans including a cam member rotatable member and means retarding movement of the said rollers.

6. In a boiler cleaner, a rotatable blower element provided with a discharge nozzle, a member rotatable. with said element, the said member anotched portion, means for supply- 'ing a cleaning fluid to said nozzle, the nozzle being soarranged that/the reaction of the cleaning fiuidissuing from the same will impart a rotary movement to the element, and means acti'ngon the notched portion of said member for opposing the rotation of said member and. said blower element. v V v s i NORMAN Ll SNOW.