Disclosed is a system and method to separate solid particle components from a fluid. It can be used in close association with a hydrocarbon producing well and uses a novel combination of mechanical filtration, solids decantation, and real and apparent forces. Disclosed is a spherical vessel with a tangential inlet to introduce the fluid and a fluid exhaust and filter arranged on the center line of the interior of the vessel. A combination of pressurized fluid and solid particles enter at the tangential inlet and move primarily in a circular path around the interior of the vessel. The circular path results in the larger mass particles settling at the vessels lower region. Less massive particles may be entrained in the exiting fluid flow toward a filter element where they are removed from the exiting fluid. The vessel has an opening to remove the trapped separated particles.

The present disclosure provides three-dimensional (3D) printing systems, apparatuses, software, and methods for the production of at least one requested 3D object. The 3D printer includes a material conveyance system, filtering system, and unpacking station. The material conveyance system may transport pre-transformed material against gravity. The 3D printing described herein comprises facilitating non-interrupted material dispensing through a component of the 3D printer, such as a layer dispenser.

A particulate filtration device is suggested, comprising an inlet for an inflow of a gas stream which is particle-laden, an outlet for an outflow of the gas stream having a significantly reduced particulate load, a main filter section, which is arranged within a flow path of the gas stream between the inlet and the outlet and which comprises a filtration medium, and a prefilter chamber, which is arranged upstream of the main filter section and which comprises an inertial filter element, having several perforations, wherein the perforations of the inertial filter element are arranged within the flow path of the gas stream in such a way that when the flow path of the gas stream is passing through the perforations, an inertial separation of the particulates from the mean flow path of the gas stream is achieved.

A separator tank and a gas compressor having a separator tank are provided. The separator tank includes a tank body defining an inner volume, a tank inlet pipe providing fluid communication with the inner volume of the tank body, wherein the tank inlet pipe tangentially penetrates the tank body and is oriented to direct fluid entering the tank body in a spiral fluid flow pathway, and a sump tube positioned to collect fluid flowing within the tank body, the sump tube comprising a vertically oriented opening oriented to align and capture fluid flowing along the spiral fluid flow pathway.

The present disclosure provides a method of operating a separator (1,1a, 1b) for separating particles from a particle-laden airflow. The method comprises receiving, in the controller (18), a separation unit status signal from the separation unit status sensor (16a, 16b, 16c, 16d), deriving, in the controller (18), separator status data based on the separation unit status signal, communicating, via the communication device (19), the separator status data to the external unit (1a, 1b, 26), receiving, via the communication device (19), incoming control data from the external unit (1a, 1b, 26), determining, in the controller (18), based on the separator status data and based on the incoming control data, whether to initiate separating unit maintenance, and selectively initiating separating unit maintenance based on said determination. The disclosure also provides a separator for implementing the method and a system comprising two or more such separators.

The present disclosure provides a method of operating a separator (1,1a, 1b) for separating particles from a particle-laden airflow. The method comprises receiving, in the controller (18), a separation unit status signal from the separation unit status sensor (16a, 16b, 16c, 16d), deriving, in the controller (18), separator status data based on the separation unit status signal, communicating, via the communication device (19), the separator status data to the external unit (1a, 1b, 26), receiving, via the communication device (19), incoming control data from the external unit (1a, 1b, 26), determining, in the controller (18), based on the separator status data and based on the incoming control data, whether to initiate separating unit maintenance, and selectively initiating separating unit maintenance based on said determination. The disclosure also provides a separator for implementing the method and a system comprising two or more such separators.

A filter housing includes a container with a surrounding wall defining an open interior volume; the container having an access opening in communication with the interior volume;) a filter element in the interior volume; the filter element having an inlet face and outlet face and oriented for filtering gas by gas flow through the inlet face and out through the outlet face; a lid removably mounted on the container to cover the access opening; and a gas inlet and gas outlet in at least one of the container and lid; the gas inlet and gas outlet being co- planar. The gas inlet and the filter element are arranged such that inlet gas turns at least 90° to flow from the gas inlet to the inlet face of the filter element.

A filter housing includes a container holding a filter element for filtering gas in the container. A lid is removably mounted on the container. A seal arrangement is between the lid and container to form a releasable seal. The seal arrangement has a container gasket and a lid gasket which are offset from each other. They can include rigid projections that are pressed into the opposing gasket.

A hand vacuum cleaner has an openable air treatment stage. The air treatment stage has a lower openable portion that is moveably mounted to a forward portion of the pre-motor filter housing.

A method for the dry filtration of a gas flow carrying foreign objects, a filter device for cleaning off waste gas resulting from additive manufacturing technologies, comprises feeding a raw gas flow containing foreign objects into a raw gas space of a filter unit having at least one filter surface separating a raw gas side from a clean gas side; feeding oxidant to a reaction region located on the raw gas side of the filter surface downstream of the filter surface; such that foreign objects contained in material cleaned off from the filter surface and/or in the raw gas flow react with the oxidant in the reaction region to form oxide-containing foreign objects.