The invention relates to an air-guiding component (1) for a pipe system, in particular for a pipe system for gaseous media preferably used in an aspirating fire detection and/or air-monitoring system. The air-guiding component (1) comprises a housing (7) having a gas inlet (12a) and a gas outlet (12b), wherein the gas inlet (12a) and the gas outlet (12b) are fluidically connected or connectable to the pipe system in order to form a flow path from the gas inlet (12a) to the gas outlet (12b) in the interior of the housing. A connection region with a port (6) is also provided for fluidically connecting, as needed or optionally, the housing interior to a maintenance/cleaning device.

To clean a nozzle that is part of an automated analyzer and is provided with both a tubular discharge unit that discharges a cleaning liquid and a tubular suction unit that suctions in cleaning liquid that was discharged from the discharge unit and is running down an outer surface, first the discharge unit is made to start discharging, and then in parallel with said discharging, the suction unit is made to start suctioning. After the suction unit has suctioned in the cleaning liquid running down the aforementioned outer surface for a prescribed length of time, the suctioning is temporarily stopped. Next, after a prescribed amount of the cleaning liquid has accumulated in a cleaning tank, the discharging is stopped, and with the suction unit immersed in the cleaning liquid accumulated in the cleaning tank, the suctioning is restarted.

To clean a nozzle that is part of an automated analyzer and is provided with both a tubular discharge unit that discharges a cleaning liquid and a tubular suction unit that suctions in cleaning liquid that was discharged from the discharge unit and is running down an outer surface, first the discharge unit is made to start discharging, and then in parallel with said discharging, the suction unit is made to start suctioning. After the suction unit has suctioned in the cleaning liquid running down the aforementioned outer surface for a prescribed length of time, the suctioning is temporarily stopped. Next, after a prescribed amount of the cleaning liquid has accumulated in a cleaning tank, the discharging is stopped, and with the suction unit immersed in the cleaning liquid accumulated in the cleaning tank, the suctioning is restarted.

The invention relates to an air-guiding component (1) for a pipe system, in particular for a pipe system for gaseous media preferably used in an aspirating fire detection and/or air-monitoring system. The air-guiding component (1) comprises a housing (7) having a gas inlet (12a) and a gas outlet (12b), wherein the gas inlet (12a) and the gas outlet (12b) are fluidically connected or connectable to the pipe system in order to form a flow path from the gas inlet (12a) to the gas outlet (12b) in the interior of the housing. A connection region with a port (6) is also provided for fluidically connecting, as needed or optionally, the housing interior to a maintenance/cleaning device.

The object of the invention is to provide a device which can, with high efficiency, polish and clean the inner surface of a pipe, dry the wet inner surface of the pipe, and perform coating, wherein the device does not require a large pump or a large motive force, and does not require a blast hose or a suction hose. More specifically, provided is an intra-pipe turbine blast system that moves along the inside of a pipe and performs work by spraying a fluid toward the inside of the pipe, wherein: a gas injected from a fluid supply device to the upstream-side end inside the pipe imparts speed to a mixed phase fluid consisting of a liquid and solid particles which are likewise injected into the pipe; the flow speed of the mixed phase fluid is set to 3 m per second which is the critical speed at which solid particles can float without precipitating in the liquid, and as a result of such setting, there is a great effect on reducing the energy required for causing the mixed phase fluid to move; and the mixed phase fluid with such setting is injected at a high speed from a rotation nozzle of a turbine crawler which moves inside the pipe, thereby polishing the inner surface of the pipe, and following the polishing work, the turbine crawler can clean, dry and coat the inner surface of the pipe.

The object of the invention is to provide a device which can, with high efficiency, polish and clean the inner surface of a pipe, dry the wet inner surface of the pipe, and perform coating, wherein the device does not require a large pump or a large motive force, and does not require a blast hose or a suction hose. More specifically, provided is an intra-pipe turbine blast system that moves along the inside of a pipe and performs work by spraying a fluid toward the inside of the pipe, wherein: a gas injected from a fluid supply device to the upstream-side end inside the pipe imparts speed to a mixed phase fluid consisting of a liquid and solid particles which are likewise injected into the pipe; the flow speed of the mixed phase fluid is set to 3 m per second which is the critical speed at which solid particles can float without precipitating in the liquid, and as a result of such setting, there is a great effect on reducing the energy required for causing the mixed phase fluid to move; and the mixed phase fluid with such setting is injected at a high speed from a rotation nozzle of a turbine crawler which moves inside the pipe, thereby polishing the inner surface of the pipe, and following the polishing work, the turbine crawler can clean, dry and coat the inner surface of the pipe.

The present invention relates to a particle transfer system and a particle transfer method which allow preciously-weighed particles to smoothly pass through a vertically-provided vertical pipe of a transfer line when powder-type particles are transferred along the transfer line, and which prevent the particles from remaining or stagnating in the vertical pipe. To this end; the particle transfer system includes a particle transfer unit including at least one from among: a first transfer unit for transferring the particles in correspondence to first transfer information; a second transfer unit spaced from the first transfer unit to transfer the particles in correspondence to second transfer information, which is the same as or different from the first transfer information; and a third transfer unit spaced from the first transfer unit and the second transfer unit to transfer the particles in correspondence to third transfer information, which is the same as or smaller in amount than the first transfer information or the second transfer information.

A gas control system including a positive pressure vessel, a negative pressure vessel, a first pressure control valve configured to control a flow of gas to and from a first manifold of a printhead assembly, and a second pressure control valve configured to control a flow of gas to and from a second manifold of the printhead assembly. During a normal positive pressure mode, gas flows from the positive pressure vessel to the first manifold and the second manifold through a respective one of the first pressure control valve and the second pressure control valve. During a positive pressure purge mode, gas from the positive pressure vessel bypasses the first pressure control valve and the second pressure control valve to flow to the first manifold and the second manifold.

A gas control system including a positive pressure vessel, a negative pressure vessel, a first pressure control valve configured to control a flow of gas to and from a first manifold of a printhead assembly, and a second pressure control valve configured to control a flow of gas to and from a second manifold of the printhead assembly. During a normal positive pressure mode, gas flows from the positive pressure vessel to the first manifold and the second manifold through a respective one of the first pressure control valve and the second pressure control valve. During a positive pressure purge mode, gas from the positive pressure vessel bypasses the first pressure control valve and the second pressure control valve to flow to the first manifold and the second manifold.

A combination vehicle (10) for cleaning a sewer includes a water jetting system (12) with a frame (34) mounted to a first end (38) of the vehicle (10) and horizontally spanning substantially the width thereof, and a slide carriage (36) operatively engaged with the frame (34) and slideable therealong. A hose reel frame (28) pivotally connects to the slide carriage (36) and is pivotal about a vertical axis, and supports a hose reel (30) that is rotatable about a horizontal axis and configured to support a hose (32). The hose (32) operatively connects to a water jetting source (46) to supply pressurized water for use in cleaning the sewer. A controller (44) operatively connects to the hose reel frame (28) and is operable to move the slide carriage (36) along the frame (34), and also to pivot the hose reel frame (28) relative to the vertical axis, thereby to enhance safety and maneuverability in locating the hose (32) in a desired position for cleaning a sewer.