A flexible lance drive device has at least one drive motor in a first portion of a housing and a drive axle projecting across a second portion of the housing carrying a cylindrical spline drive roller. A plurality of cylindrical guide rollers on fixed axles span across the second portion of the housing aligned parallel to the spline drive roller. An endless belt wrapped around the at least one spline drive roller and guide rollers has a generally smooth outer surface and a transverse splined inner surface having splines shaped complementary to splines on the spline drive roller. A bias member supports a plurality of follower rollers each aligned vertically above one of the at least one spline drive roller and guide rollers operable to press each follower roller toward one of rollers to frictionally grip a flexible lance hose when sandwiched between the follower rollers and the endless belt.

A flexible lance drive device has at least one drive motor in a first portion of a housing and a drive axle projecting across a second portion of the housing carrying a cylindrical spline drive roller. A plurality of cylindrical guide rollers on fixed axles span across the second portion of the housing aligned parallel to the spline drive roller. An endless belt wrapped around the at least one spline drive roller and guide rollers has a generally smooth outer surface and a transverse splined inner surface having splines shaped complementary to splines on the spline drive roller. A bias member supports a plurality of follower rollers each aligned vertically above one of the at least one spline drive roller and guide rollers operable to press each follower roller toward one of rollers to frictionally grip a flexible lance hose when sandwiched between the follower rollers and the endless belt.

A hydroblaster includes a carriage. A plurality of bearings is rotatably mounted to the carriage at a bottom portion of the carriage. A plurality of legs is mounted to the carriage at the bottom portion of the carriage. The plurality of legs extend downwardly from the bottom portion of the carriage past the plurality of bearings. A fluid conduit is disposed on the carriage at a top portion of the carriage. A first motor is mounted to the carriage at the top portion of the carriage. The first motor is coupled to the fluid conduit such that the first motor is operable to rotate the fluid conduit. A second motor is mounted to the carriage at the top portion of the carriage. The second motor is coupled to a gear positioned at the bottom portion of the carriage such that the second motor is operable to rotate the gear.

Disclosed herein is a condenser tube cleaning apparatus. The condenser tube cleaning apparatus can stably circulate and collect a large number of cleaning balls to efficiently remove foreign substances accumulated in a condenser unit.

Disclosed herein is a condenser tube cleaning apparatus. The condenser tube cleaning apparatus can stably circulate and collect a large number of cleaning balls to efficiently remove foreign substances accumulated in a condenser unit.

The present application provides a heat exchange assembly for exchanging heat between a coolant and a gaseous medium. The heat exchange assembly may include an outer jacket, a number of gas tubes positioned within the outer jacket, and a self-cleaning system positioned about the gas tubes. The self-cleaning system may include a number of chains extending through the gas tubes.

The present application provides a heat exchange assembly for exchanging heat between a coolant and a gaseous medium. The heat exchange assembly may include an outer jacket, a number of gas tubes positioned within the outer jacket, and a self-cleaning system positioned about the gas tubes. The self-cleaning system may include a number of chains extending through the gas tubes.

A multiple flexible lance hose take-up drum apparatus or device in accordance with the present disclosure includes a base having three or more support legs and a hollow take-up drum assembly rotatably supported from the base. The drum assembly includes a hollow cylindrical shell, a bottom plate fastened to the shell, a high pressure fluid supply connection and a manifold positioned radially along a bottom plate of the shell for connection to one end of each of a plurality of flexible lance hoses. The base includes an L shaped support arm extending from the bases alongside the shell. A plurality of guide tubes are supported by the support arm and aligned over a rim of the shell for guiding flexible lance hoses into and out of the take-up drum assembly.

A multiple flexible lance hose take-up drum apparatus or device in accordance with the present disclosure includes a base having three or more support legs and a hollow take-up drum assembly rotatably supported from the base. The drum assembly includes a hollow cylindrical shell, a bottom plate fastened to the shell, a high pressure fluid supply connection and a manifold positioned radially along a bottom plate of the shell for connection to one end of each of a plurality of flexible lance hoses. The base includes an L shaped support arm extending from the bases alongside the shell. A plurality of guide tubes are supported by the support arm and aligned over a rim of the shell for guiding flexible lance hoses into and out of the take-up drum assembly.

A compact flexible lance propelling apparatus is disclosed that is mountable on a pipe end. The apparatus includes a drive mechanism, an adaptable support that can be fastened directly to the pipe end which carries the drive mechanism, a remote control console, and a hose take-up drum spaced from the drive mechanism. The drive mechanism includes a driven roller and a follower roller sandwiching the flexible lance hose therebetween and a rotary cam lift mechanism for linearly raising the follower roller to permit insertion of the flexible lance hose and lowering the follower roller against the driven roller.