US1847451A - Boiler cleaner - Google Patents

Description

March 1, 1932.

w. P. THOMAS BOILER CLEANER 2 Sheet-Sheet Original Filed Oct. 30. 1922 anucntoz 74 222251? 7720722626 .March 1, 1932. w THOMAS 1,847,451

B0 I LER CLEANER Original Filed Oct. 30. 1922 2 Sheets-Sheet 2 gnueuht 71 212 is 2. 7720771 as ai etented Mar. 1, i932 earl-1s STATES PATENT. OFFICE WILLIS THOMAS, OF DETROIT, MICHIGAN, ASSIGNOR TO DIAMOND POWER SPECIALTY COREORATION, F DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN BOILER CLEANER Application filed October 30, 1922, Serial No. 597,996. Renewed April 20, 1931.

This invention relates to boiler cleaners and refers more particularly to boiler cleaners of the type in which a rotatable unit is used to discharge jets of steam against the surfaces of the tubes or other parts to be cleaned.

One of the main objects of the invention is to provide a new and improved valve operating mechanism which is preferably intercons nected with the mechanism for rotating the unit so as to hold the valveopen during a predetermined portion of the rotation of the blower unit; to provide a construction in which a poppet valve is employed, this valve being preferably located directly in the axis of the blower unit. The invention resides further in such details of construction and arrangements and combination of parts as will. more fully hereinafter appear.

In the drawings: I

Fig. 1 is avertical sectional view through a soot blower embodying my invention.

Fig. 2 is an end view of the parts shown in F 1'. p

Figs. 3 and 4' are views similar to Figs. 1 and 2 respectively but showing a modified construction. j

Describing first in detail the particular embodiment of my invention shown in the drawings, A designates a rotatable blower pipe having a plurality of discharge nozzles B through which steam is adapted to be discharged against the surfacesof the tubes C or other parts of the boiler to be cleaned. Steam for cleaning the tubes is supplied to A the nozzles by means of an inlet D having ports D, the communication between which ports the interior of the blower pipe A is controlled by a valve E. The latter is of the poppet type and is held to its seat E by means of springs E and E The spring E acts on its forward end against the collar 4 5 secured to the valve stem E. This spring E is mounted in a suitable'recess in the plug H which is screwed into the end of the blower. pipe A. Sheave wheel H is fixed to this plug by studs H and is pinned to the blower tube A. by means of pin H Thus, when sheave wheel H is rotated the blower tube A and the plug H rotate therewith as a unit, since these parts are all in fixed engagement.

For lifting the valve against the tension of the'springs there is employed a rock arm G pivoted as by a pin G and having the forked end. G pivotally connected by pin G to the valvestem E. One end of the spring E bears against the rock arm G to-normally hold the valve E seated as aforesaid. The spring E has an intermediate portion E coiled about the pivot pin G and lower end portions E engageable with the relatively fixed chain guide E Thus the chain guide E serves also to fixedly support the pivot pin G. The rock arm G is moved towards its outer position by a cam-H which is carried by the sheave H.. The latter is affixed to the rotatable blower unit A so that upon the rotation of'the sheave wheel H both the blower unit A and the cam H will be'rotated. E and E are coil springs respectively acting on the bearing rings E and E to place a tension at the threads of these rings thus pre-' venting their accidental disengagement from the blower housing E Whenever the high portion of the cam comes in contact with the rock arm G it will rock it outwardly and pull the valve E from its seat E permitting steam to pass through theports D from the inlet D to the blower unit A. With this construction it is possible to rotate the sheave wheel H continuously in either direction and to still have the valve E automatically opened during predetermined portions only of the rotation of the blower unit. I

In the construction shown in Figs. 3 and 4 the arrangement of parts is the same except that the cam H is omitted and an arm J fixed to the rock arm G. A chain or other suitable operating mechanism K is fastened to a loop K in the arm J so that the operator can manually adjust thevalve E from its seat. It is, of course, understood that the chain K and the chain N of the sheave wheel H can both extend'toa convenient position for use. Applicable to either of the modifications described, but more particularly to the second form, is the application of adjustable stops to the sheave wheel H, these stops being adapted to contact with a fixed projection on the body of the blower head to fix the limits of oscillatory travel of the blower tube.

Thus, the member H may be fixed as by set screw H to a rim H formed integral with the sheave wheel H. H is a fixed projection on the body of the blower head with which the member, or members H are adapted to contact to limit the movement of the sheave wheel H, thus determining the limits of oscillatory travel of the blower tube. The invention is, however, not limited to the particular operating mechanism or to other specific features of construction except as ultimately set forth in the claims.

What I claim as my invention is:

1. In a boiler cleaner, the combination with a stationary member forming an inlet for supply of steam, of a rotary blower pipe arranged to rotate about its longitudinal axis to direct the jets of steam against the surfaces to'be Cleaned, and a poppet valve located substantially in alinement with the blower unit for controlling the supply of steam thereto from the inlet and means for automatically moving said valve away from the seat during a predetermined portionof the rotation of the blower unit.

2. In a boiler cleaner, the combination with a stationary member forming an inlet for supply of steam, of a rotary blower pipe arranged to rotate about its longitudinal axis to direct the jets of steam against the surfaces to be cleaned, and a poppet valve located substantially in alinement with the blower unit for controlling the supply of steam thereto from the inlet and means for automatically movingsaid valve-away from the seat during a predetermined portion of the rotation of the blower unit, said means including a cam for positively forcing the valve away from its seat.

3. In a boiler cleaner, a stationary member forming an inlet for supply of steam, a rotary blower pipe arranged to rotate about its longitudinal axis to direct the jets of steam against the'surfaces to be cleaned, and an axially slidable poppet valve located substantially in alignment with the blower unit for controlling the supply of steam thereto from the inlet, a va ve stem axially aligned with the valve and extending rearwardly therefrom, a rotatable member concentric with the valve stem adapted to rotate the blower pipe, and means acting upon said valve stem for automatically moving said valve away from the seat during a predeten mined portion of the rotation of the blower unit. 7

4. In a boiler cleaner, the combination with a stationary member forming an inlet for supply of a cleaning fluid, of a rotary lower pipe arranged to rotate about its longitudinal axis to direct jets of the cleaning fluid against the surface to be cleaned, and a poppet valve located substantially in alignment with the blower pipe for controlling the supply of cleaning fluid thereto from the inlet and manually operated means directly acting on said valve for automatically moving said valve away from its seat during a predetermined portion of the rotation of the blower pipe.

5. A tube cleaner comprising a cleaner element, a stationary head within which one end of said element turns, a valve in said head comprising a valve proper and a valve seat carried by said element, and means including amember carried bysaid head coacting with said valve proper to move the latter in the direction of the axis of the element to open and closed positions when the element is turned.

6. In a boiler cleaner, the combination with a rotatable blower tube having a jet for the discharge of cleaning fluid against the boiler surfaces to be cleaned, said blower tube having an inlet port, and means for rotating said blower tube of a member supported by the blower tube and movable relatively thereto, means to move the said member axially of said blower tube to control the inlet port in said blower tube, said means being interconnected with the blower tube rotating means whereby 'the discharge of cleaning fluid is caused to take place during a predetermined period of the rotation of said blower tube.

7 In a boiler cleaner, the combination with a stationary member forming an inlet for supply of steam, of a rotary blower pipe arranged to rotate about its longitudinal axis to direct the jets of steam against the surfaces to be cleaned, and a valve located substantially in alignment with the blower unit for controlling the supply of steam thereto from the inlet, and means for automatically moving said valve axially of said blower pipe away from the seat during a predetermined portion of the rotation of the blower unit.

8. In a boiler cleaner, the combination with a stationary member forming an inlet for supply of steam, of a rotary blower pipe arranged to rotate about its longitudinal axis to direct the jets of steam against the surfaces to be cleaned, and a valve located substantially in alignment with the blower unit for controlling the supply of steam thereto from the inlet and means for automatically moving said valve axially of said blower pipe away from the seat during a predetermined portion of the rotation of. the blower unit, said means including a cam for positively forcing the valve away from its seat.

9. In a boiler cleaner, a rotatable blower tube extending adjacent the boiler heating surfaces and provided with a nozzle for the discharge of cleaning fluid adjacentthe surfaces to be cleaned, a source of supply of cleaning fluid for said blower tube, a stationary head located exteriorly of the boiler in which the end of said blower tube is journalled, said stationary head forming a connection between said blower tube and said source of supply of cleaning fluid, a valve member located in said head for controlling the supply of cleaning fluid to said blower tube, a port formed in the end of t 1e blower tube with which said valve member engages, and means to move the said valve member axially of said blower tube out of engagement with the said port to uncover the port whereby cleaning fluid may be admitted to the blower tube.

10. In a boiler cleaner, a blower tube extending adjacent the boiler heating surfaces and provided with a nozzle for the discharge of cleaning fluid, a source of supply of cleanins; fluid, a member located exteriorly of the boiler in which the open end of said blower tube is mounted, said member forming a connection between said blower tube and said source of supply of cleaning fluid a valve member located in said member and supported by the blower tube for controlling the supply of cleaning fluid. to said tube, a port formed in the end of the blower tube with which said valve member engages, and means to move the said valve member axially of said blower tube out of engagement with said port whereby cleaning fluid may be admitted to the blower tube.

11. In a boiler cleaner, the combination with a stationary member forming an inlet for a supply of steam, oi a rotary blower pipe arranged to rotate about its longitudinal axis to direct the jets of steam against the surface to be cleaned, and a valve carried by and located substantially in alignment with the blower unit for controlling the supply of steam thereto from the inlet, and a cam movable with the blower pipe for automatically moving said valve away from the seat during a predetermined portion of the rotation of the blower unit.

12. In. a boiler cleaner, the combination with a rotatable blower element, means for rotating said element, a valve seat carried by said element and a valve axially aligned with said blower element and engageable with said valve seat for controlling the passage of cleaning fluid to said element, of means cooperating with said element rotating means for axially mov said valve to open and close the same. I

13. In a boiler cleaner, the combination with a rotatable blow-er element, and a valve axially aligned with said blower element for controlling the passage of cleaning fluid to said element, of means for rotating said blower element, and a cam member cooperating with said element rotating means for axially moving said valve to open and close the same.

14. In a boiler cleaner, a movable blower element, means for moving said blower element, a valve member engageable with a valve seat movable with said blower element for controlling the flow of cleaning fluid to said blower element, and means operable "said port, and means operable upon movement of the blower element to effect a rela 'tive movement between said valve and port in the direction of the axis of the blower element to control the flow of cleaning fluid to v the blower element;

16.111 a boiler cleaner, a movable blower element, valve members for controllingthe flow of cleaning fluid to said blower element comprisin avalve proper and a valve seat defining a port co-axial with said blower element, one oi said valve members being carried by said blower element, and means oper able upon movement of said blower element to move one of said valve members in the direction of the axis of the blower element.

17. In a boiler cleaner, a movable blower element, valve members for controlling the flow of cleaning fluid to said blower elementcomprising a valve proper and a valve seat carried by said element, and means operable upon movement of said blower element to move one of said valve members in the direction of the axis of the blower element to control the flow of cleaning fluid to said blower element.

18. In a boiler cleaner, a rotatable blower element, means for rotating said blower element, valve members comprising a valve proper and a valve seat carried by said element, and means operable upon actuation of said rotating means to move one of said valve members in the direction of the axis of the blower element to control the supply of cleaning fluid to said blower element.

.19. In a boiler cleaner, a rotatable blower element, a port formed in the end of said blower element and co-axial therewith, a valve member engaging said port for controlling the flow of cleaning fluid through the same, and means operable upon rotation of said blower element to eflect a relative movement between said valve and said port in the direction of the axis of the blower element to control the flow of cleaning fluid to said and close said valve when the element is turned.v

QLIna boiler cleaner, a blower head, a blower element having an enlarged portion journaled in said blower head, a valve seat formed in the enlarged portion of said blower element, a valve member housed within the e enlarged portion of said blower element and engageable with said valve seat for controlhug the flow ot cleanlng fluid to said blower element, and means operable upon rotation of said blower element to efiect a relative movement between said valve member and valve seat in the direction of the axis of the blower element to control the flow of cleaning fluid to the blower element. 1

22. In a boiler cleaner, a rotatable blower element, a valve for controlling the flow of cleaning fluid to said blower element comprising a valve proper and a valve seat carried by said blower element, and means operable upon rotation of said blower element to open said valve and to hold the same open during a predetermined portion of the rotation of the blower element.

23. In a boiler cleaner, a rotatable blower element, a valve for controlling the flow of cleaning fluid to said blower element comprising a valve proper and avalve seat car ried by said blower element, means for rotating said blower element and means rotatable with said blower element for opening said valve and for holding the same open during a predetermined portion of the rotation ofthe blower element.

In testimony whereof I affiX mv signature.

WILLIS P. THOMAS.

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