The present invention provides a device and method for installing sensor/transductor elements on the inside wall of tubular structures, comprising a step of cleaning the inside of a duct and a step of installing the sensor/transductor. The mechanical device that is the subject matter of the present invention comprises four articulated arms (2), each one being coupled at the ends thereof to through-slits (23) in prismatic components (21) and the latter coupled to control elements (1) and (31) which by means of the threaded axial through-holes (24) thereof are screwed to the power screw axes (30) and (32) and by actuating same by rotating the extension tube (5) cause radial movement of the articulated arms (2), said retractable mechanical device also comprising centralizing elements (34) composed of at least 4 spring shafts (35).

A 3D printer includes a nozzle and a cleaning system. The cleaning system includes a gas source configured to introduce a gas at least partially into the nozzle. The cleaning system also includes a cleaning tool configured to remove solidified metallic dross from within the nozzle.

The group of inventions can be used for removal of deposits in sewers and the simultaneous removal thereof in various pipelines, providing mechanization of the cleaning process in a sewage pipeline and eliminating the need for disassembling the drain system and manually cleaning it. A movable element and a cleaning tool mounted thereon, both arranged within the sewage pipeline, are moved along the sewage pipeline by means of a drive mounted outside the sewage pipeline and connected to the movable element. In the initial position, the cleaning tool is located at the end of the sewage pipeline, outside the sewage pipeline portion connecting the drain pipe with a riser. When the cleaning tool reaches the end position at the junction of the sewage pipeline and the riser, the drive and the movable element move the cleaning tool to its initial position.

The group of inventions can be used for removal of deposits in sewers and the simultaneous removal thereof in various pipelines, providing mechanization of the cleaning process in a sewage pipeline and eliminating the need for disassembling the drain system and manually cleaning it. A movable element and a cleaning tool mounted thereon, both arranged within the sewage pipeline, are moved along the sewage pipeline by means of a drive mounted outside the sewage pipeline and connected to the movable element. In the initial position, the cleaning tool is located at the end of the sewage pipeline, outside the sewage pipeline portion connecting the drain pipe with a riser. When the cleaning tool reaches the end position at the junction of the sewage pipeline and the riser, the drive and the movable element move the cleaning tool to its initial position.

A solid pellet fueled apparatus having a duel auger system and multi/high speed auger motor is disclosed. The duel auger may include first and second auger blades mounted on a single auger shaft having blade pitches configured to convey solid fuel in opposite directions towards a central burn pot. Each auger blade may service a separate solid fuel compartment provided in a single hopper. The auger motor may have a high-speed setting that may be selected for solid fuel clean out.

A solid pellet fueled apparatus having a duel auger system and multi/high speed auger motor is disclosed. The duel auger may include first and second auger blades mounted on a single auger shaft having blade pitches configured to convey solid fuel in opposite directions towards a central burn pot. Each auger blade may service a separate solid fuel compartment provided in a single hopper. The auger motor may have a high-speed setting that may be selected for solid fuel clean out.

A tool called a spinner is interposed between a rotary driver and a flexible shaft that is being rotated and moved axially when a duct or chimney is being cleaned by a whip head at the end of the shaft. A tubular shape collar has a home position on the body of the spinner. Grasping and holding the collar at its home position, while the driver rotates, helps steady the driver as the body moves within the collar. To dampen oscillation of the shaft, the collar is moved lengthwise from the body, and along the shaft to a working position where it is held manually. The collar is retained on the body by frictional means. A user can overcome the retaining force and, without using a second tool, slide the collar off the body and along the shaft to the working position, while the spinner is rotating or stationary.

A tool called a spinner is interposed between a rotary driver and a flexible shaft that is being rotated and moved axially when a duct or chimney is being cleaned by a whip head at the end of the shaft. A tubular shape collar has a home position on the body of the spinner. Grasping and holding the collar at its home position, while the driver rotates, helps steady the driver as the body moves within the collar. To dampen oscillation of the shaft, the collar is moved lengthwise from the body, and along the shaft to a working position where it is held manually. The collar is retained on the body by frictional means. A user can overcome the retaining force and, without using a second tool, slide the collar off the body and along the shaft to the working position, while the spinner is rotating or stationary.

Certain exemplary embodiments can provide a system that comprises an electric motor, an electric motor housing, a cable and a heat shield. the electric motor housing substantially surrounds the electric motor with the exception of a protruding shaft of the electric motor. The cable is coupled to the electric motor, the cable is constructed to rotate within a stovepipe or chimney.

Proposed is a powder removing apparatus using a screw cylinder for a gas processing facility, in which the powder removing apparatus has a structure in which a scraper is coupled to the screw cylinder that allows a piston rod to be moved forward while being rotated in one direction and to be moved backward while being rotated in a reverse direction according to a supply direction of fluid, thereby allowing the powder adhered to an inner circumferential surface of a pipeline of the gas processing facility or an inner wall surface of the gas processing facility to be easily and efficiently removed. According to an embodiment of the present disclosure, the powder removing apparatus includes the screw cylinder and a scraper.