A separator apparatus is described for separating liquids and solids from a gas. The separator apparatus includes a reverse flow cyclone comprising a cylindrical section, a conical section, and a top, the cylindrical section having a feed inlet, the top having a gas outlet, and the conical section having a reject outlet at the bottom thereof. An axial cyclone is disposed in the cylindrical section, the axial cyclone oriented with a first end located proximate to the top of the apparatus and a second end opposite the first end, the axial cyclone having a tapered entrance fixture at the second end thereof and having a wall with a plurality of openings located between the first end of the axial cyclone and a midpoint of the axial cyclone. A drain plate is coupled to the cylindrical section below the openings of the axial cyclone.

This invention relates to the separation of particulate contaminants from a fluid. In one embodiment of the invention, two sand separators placed in series may be used to separate sand from liquid or gaseous natural gas. This invention has some of its applications in the oil gas industry, particularly for use in separating sand from gas produced by natural gas wells that have been opened by hydraulic fracturing.

This invention relates to the separation of particulate contaminants from a fluid. In one embodiment of the invention, two sand separators placed in series may be used to separate sand from liquid or gaseous natural gas. This invention has some of its applications in the oil gas industry, particularly for use in separating sand from gas produced by natural gas wells that have been opened by hydraulic fracturing.

An inlet assembly for an auxiliary power unit for an aircraft, including a particle separator and a plenum having first and second inlets. A first duct configured to deliver air to an engine of the auxiliary power unit is in fluid communication with an outlet of the plenum. A second duct configured to deliver air to a compartment containing the auxiliary power unit is in fluid communication with the outlet of the plenum. The assembly is selectively configurable between a first configuration where the plenum is in fluid communication with the environment of the aircraft through the second inlet and through the particle separator, and a second configuration where the plenum is in fluid communication with the environment of the aircraft through the first inlet independently of the particle separator. An auxiliary power unit assembly and a method of feeding air to an auxiliary power unit assembly are also discussed.

Described herein is a gas-liquid separating gas exchange device comprising a vent mechanism that services gas exchange between the interior and exterior of a housing, a shelter of the vent mechanism distal from the housing that provides shelter of a distal area around the vent mechanism, an area-encompassing abutment rising distally from the housing and encompassing both the vent mechanism and the shelter and creating a fluid-catchment junction between the shelter and the abutment, and at least one fluid-exchange passageway in the at least one shelter allowing fluid exchange between the distal sheltered area and the abutment into the fluid-catchment junction. The gas-liquid separating gas exchange device may separate gas and liquid by gravity, energy of vibration, air-pressure forces, or a combination thereof and facilitates expulsion of contaminating liquid and debris from the housing.

Described herein is a gas-liquid separating gas exchange device comprising a vent mechanism that services gas exchange between the interior and exterior of a housing, a shelter of the vent mechanism distal from the housing that provides shelter of a distal area around the vent mechanism, an area-encompassing abutment rising distally from the housing and encompassing both the vent mechanism and the shelter and creating a fluid-catchment junction between the shelter and the abutment, and at least one fluid-exchange passageway in the at least one shelter allowing fluid exchange between the distal sheltered area and the abutment into the fluid-catchment junction. The gas-liquid separating gas exchange device may separate gas and liquid by gravity, energy of vibration, air-pressure forces, or a combination thereof and facilitates expulsion of contaminating liquid and debris from the housing.

A gravity type water-purifying device is provided. A gravity type water-purifying device according to an embodiment of the present invention comprises: a filtered water generating part comprising a filler module for filtering out foreign materials contained in raw water by using gravity, a housing which stores a predetermined amount of the raw water and has a filtering space formed therein in which the filter module is disposed, and an outlet formed through the housing to allow the filtered water generated through the filter module to be discharged to the outside; and a filtered water storing part which has a filtered water storing space formed therein in order to store a predetermined amount of filtered water generated by the filtered water generating part, is detachably connected to the filtered water generating part by unit of a connection pipe so as to be separable from the filtered water generating part and be movable by itself, and is provided with an opening/closing unit for discharging filtered water stored in the filtered water storing space to the outside.

A gravity type water-purifying device is provided. A gravity type water-purifying device according to an embodiment of the present invention comprises: a filtered water generating part comprising a filler module for filtering out foreign materials contained in raw water by using gravity, a housing which stores a predetermined amount of the raw water and has a filtering space formed therein in which the filter module is disposed, and an outlet formed through the housing to allow the filtered water generated through the filter module to be discharged to the outside; and a filtered water storing part which has a filtered water storing space formed therein in order to store a predetermined amount of filtered water generated by the filtered water generating part, is detachably connected to the filtered water generating part by unit of a connection pipe so as to be separable from the filtered water generating part and be movable by itself, and is provided with an opening/closing unit for discharging filtered water stored in the filtered water storing space to the outside.

A lens protection structure comprising a main body configured for defining a receiving space by being attached to a lens module, the receiving space is configured for receiving a lens of the lens module, the main body is arranged with an air escape structure for communicating the receiving space and external environment, the air escape structure comprises: an air flow channel, a diversion connected in the air flow channel for diverting the airflow therethrough, and a retention connecting to the diversion for harvesting impurities and dust carried in air flow through the air escape structure. Therefore, the lens protection structure prevents the lens from being damaged in processing and transporting while provides communication between the receiving space and the external environment.

A lens protection structure comprising a main body configured for defining a receiving space by being attached to a lens module, the receiving space is configured for receiving a lens of the lens module, the main body is arranged with an air escape structure for communicating the receiving space and external environment, the air escape structure comprises: an air flow channel, a diversion connected in the air flow channel for diverting the airflow therethrough, and a retention connecting to the diversion for harvesting impurities and dust carried in air flow through the air escape structure. Therefore, the lens protection structure prevents the lens from being damaged in processing and transporting while provides communication between the receiving space and the external environment.