Apparatus for delivering a pressurized fluid material for cleaning a surface

An apparatus for recovering heat during a drying process, the apparatus comprising:

• a) a heat recovery assembly comprising,
• i) a housing,
• ii) a shaft extending vertically through a plurality of openings in the housing,
• iii) a mechanism for causing the shaft to rotate,
• iv) a generally flat disc having a top surface, a bottom surface, a plurality of holes formed therein and further having a central aperture with which the shaft can be associated so that the disc can rotate about the shaft, the disc dividing the housing into an upper chamber and a lower chamber,
• v) a first divider panel associated with the housing and having a bottom edge proximate to the top surface of the disc, the first divider panel dividing the upper chamber into a first upper chamber and a second lower chamber,
• vi) a second divider panel associated with the housing and having a bottom edge proximate to the bottom surface of the disc, the second divider panel dividing the upper chamber into a second upper chamber and a second lower chamber,
• vii) a first inlet port associated with the first upper chamber, a first exhaust port associated with the first lower chamber, a second inlet port associated with the second lower chamber, and a second exhaust port associated with the second upper chamber,
• viii) a duct for conveying air from the first lower chamber, and,
• ix) a duct for conveying air into the second lower chamber;
• b) a cleaning assembly operatively associated with the heat recovery assembly, the cleaning assembly comprising,
• i) a mounting member having a first side and an opposing second side,
• ii) a rotation member positioned to lie along the first side of the mounting member,
• iii) a first drive mechanism positioned to lie along the second side of the mounting member, the first drive mechanism coupled to the rotation member and configured to rotate the rotation member relative to the mounting member about a first axis,
• iv) an arm including a pivot arm section coupled to the mounting member for rotation about a second axis substantially parallel with and spaced apart from the first axis, a middle arm section coupled to the pivot section at a pivot joint, and a distal arm section coupled to the middle arm section and terminating in a nozzle,
• v) a linkage coupled to the middle arm section between the nozzle and the pivot arm section and to the rotation member, the linkage configured to move with the rotation member to rotate the arm about the second axis as the rotation member rotates about the first axis, and
• vi) a second drive mechanism coupled to the arm;
• wherein the nozzle is adapted to direct pressurized material onto the disk and through the holes in the disk, the pivot joint is configured to allow the distal arm section and nozzle to pivot relative to the pivot arm section about a third axis substantially perpendicular to the first axis, and the second drive mechanism is configured to move the distal arm section and nozzle about the third axis to change an angle at which the pressurized material is directed relative to the disk.