Patent GB-433609-A (GB)
Title: Improvements in soot blowers
IPC: F28G3/16
Filed: 1933-12-16
Abstract: 433,609. Soot blowers. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London.-(Assignees of Snow, N. L. ; New Canaan, Connecticut, U.S.A., Thomas, W. P. ; Highland Park, Brelsford, H. E.; Birmingham, Howse, C. L., and Bowers, F. ; Detroit, all in Michigan, U.S.A.) Dec. 16, 1933, No. 19936/35. Convention date, Dec. 27, 1932. Divided out of 432,791. [Class 99 (ii)] In a fluid-heater soot blower system comprising a number of blower tubes B25 Fig. 1, each rotatable by a fluid-pressure engine B30, the supply of cleaning fluid to the blower tubes and pressure fluid to the engines is controlled by a valve 121 which is located in a conduit 102 leading from a common main B40 to a distributer 100. The distributer comprises a chamber 101, into which the conduit 102 leads, and chambers 103, each provided with an outlet conduit B70 leading to one of the engines B30, the chamber 101 being permitted to communicate with the chambers 103 in turn by valves 104 actuated by an arm 110 which is rotated by a motor 115, Fig. 2, through gearing 113, 114, to engage successively adjustable caps 116 on the stems 106 of said valves. The caps 116 are adjustable so that the length of time of opening of each valve 104 may be regulated approximately. The motor 115 is started by the closing of a switch 130, which may be effected by a clock 136, the switch serving also to energize a solenoid 123 for opening the valve 121, and it is stopped by the closing of a switch 143 in the motor circuit by a cam 142 on the arm 110 after a complete rotation of the latter. The conduits B70 are each provided with a valve 75 which is opened and closed by mechanism 79 of the kind described in Specification 433,608, this mechanism, which includes a cam 77, being actuated manually by a chain 91 to open the valve to admit pressure fluid to the engine B30 and then actuated automatically by a pawl 85 to close the valve after a predetermined number of rotations of the blower tube. Cleaning fluid is supplied to the blower tubes through branches B41 of the main B40, the main being provided with a valve B42 which opens when the valve 121 is opened and each branch being provided with a valve (not shown), which is located near the head of the corresponding blower tube and is actuated by a cam B31 on the blower tube through a lever B28, the latter also actuating the pawl 85 of the mechanism 79. In operation the several mechanisms 79 are actuated and the switch 130 of the motor 115 closed, whereupon the valve 121 opens to admit pressure fluid to the distributer 100 ; at the same time pressure fluid through a conduit 120 opens the valve B42 and permits cleaning fluid to flow through the branches B41. The arm 110 also commences to rotate, first putting each conduit B70 successively into communication with the conduit 102 to drive the corresponding engine and then closing the switch 143 to stop the motor 115 and close the valve 121. In a modification, Fig. 4, the valve 121 is located in the main C40 and the latter is led to the distributer 100, the distributer supplying cleaning fluid to each of the blowers C25 in succession through branches C41 and pressure fluid being supplied to the motors C30 by leads C70 from said branches.