PIVOT PIN FOR FURNACE SIDE REMOVAL
First Claim
1. A replaceable nozzle tip assembly within a solid fuel furnace having a stationary nozzle with at least one sidewall, wherein the nozzle tip assembly comprises:
- a nozzle tip having at least one shroud wall and a central opening;
a bearing fixed to said shroud wall, the bearing having a orifice;
a pivot pin assembly for passing through the bearing orifice and said sidewall of the stationary nozzle, to pivotally and removeably attach the nozzle tip to the stationary nozzle, the pivot pin assembly acting as a fastener that is accessible from the central opening.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed herein is a novel pivot pin assembly 410, 420 430, 600 for pivotally attaching nozzle tips 200 to stationary nozzles in a solid fuel furnace. The pivot pin assemblies allow rapid replacement of the nozzle tips 200. The pivot pin assembly 410, 420 430, 600 employs fasteners that or recessed or have an aerodynamically shaped head 610. The head 610 includes a leading edge 613 and optionally a trailing edge 615 that are aerodynamically shaped to reduce corrosion and erosion. The pivot pin assembly pivotally attaches the nozzle tip 200 to the stationary nozzle 110. It employs fasteners that are accessible from a furnace side through a central opening of the nozzle tip 200. This allows removal of the nozzle tip 200 from inside the furnace greatly simplifying nozzle tip 200 replacement.
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Citations
21 Claims
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1. A replaceable nozzle tip assembly within a solid fuel furnace having a stationary nozzle with at least one sidewall, wherein the nozzle tip assembly comprises:
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a nozzle tip having at least one shroud wall and a central opening; a bearing fixed to said shroud wall, the bearing having a orifice; a pivot pin assembly for passing through the bearing orifice and said sidewall of the stationary nozzle, to pivotally and removeably attach the nozzle tip to the stationary nozzle, the pivot pin assembly acting as a fastener that is accessible from the central opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15, 16)
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9. A nozzle tip assembly for removable attachment to a stationary nozzle of a solid fuel furnace, the stationary nozzle having at least one sidewall, the nozzle tip assembly comprising:
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a nozzle tip having at least one outer shroud wall and at least one central opening; a bearing having a bearing orifice, the bearing attached to said shroud wall; a fastener base fitting into the bearing orifice and extending at least partially through the stationary nozzle sidewall allowing the stationary nozzle sidewall to pivot relative to the fastener base and nozzle tip; a set screw for securing the fastener base to the bearing, the set screw being accessible from the central opening of the nozzle tip. - View Dependent Claims (10, 11, 12, 13, 14)
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17. An aerodynamic pivot pin assembly passing through a surface of a shroud of a nozzle tip for pivotally securing a nozzle tip to a nozzle, comprising:
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a head inside of the nozzle tip, wherein the head has decreasing thickness from a top to a leading edge to minimize resistance to flow and erosion of head. - View Dependent Claims (18, 19, 20, 21)
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Specification