A system for growing plants, the system may include a substrate having one or more weakened areas or openings: one or more grow portions coupled to the substrate and situated at the one or more weakened areas or openings and having at least one seed or plant; and/or a fluid distribution portion coupled to the substrate and configured to provide fluid to the one or more grow portions. The system may further include a method of operation including one or more acts of: obtaining a weather forecast for a future time period; determining whether rain is expected during the future time period; and preventing, terminating, or restricting an irrigation cycle when it is determined that rain is expected during the fare time period. The restricting may restrict a flow of liquid during the irrigation cycle or shorten the irrigation interval.

A handheld shower head includes a shower head body, a water inlet assembly and a water outlet assembly mounted on the shower head body. The water inlet assembly includes a water inlet body and a flow control device. The flow control device includes a gasket, a return spring, a control valve shaft, and a control button. The control valve shaft passes through the flow control chamber of the water inlet body. A lower portion of the control valve shaft is connected with the gasket. The control button is connected with an upper portion of the control valve shaft. The handheld shower head can control the flow rate of water discharge and is user-friendly.

A medical device including an application device with a first fluid path and a container movably attached to the application device. The container and the application device have a second fluid path therethrough, the container includes an inner chamber that is intermediate proximal and distal portions of the second fluid path, the inner chamber is fluidly isolated from the proximal portion of the second fluid path at a first position of the container, and the inner chamber is fluidly coupled to the proximal and distal portions of the second fluid path at a second position of the container. The first fluid path bypasses the container and the passage of fluid through the first fluid path is separately controllable from the passage of fluid through the second fluid path.

A liquid ejecting apparatus includes a liquid ejecting section from which liquid is ejected. A return passage has a first end connected to a supply passage at a first location and a second end connected to the supply passage at a second location. The second location is positioned closer to the liquid ejecting section than the first location. The return passage and the supply passage constitute a circulating passage. A pump can cause fluid to flow through the circulating passage. A replaceable filter unit is a portion of the return passage. A discharge passage through which the fluid is discharged to the outside is connected to the return passage. An inflow controller can suppress external fluid from entering the discharge passage.

An additive manufacturing (AM) system includes a housing defining a chamber, a build platform disposed within the chamber, and an upper gas inlet configured to supply an upper gas flow in a first direction parallel to the build platform. The AM system includes a lower gas inlet disposed in the chamber and configured to supply a lower gas flow in a second direction toward a bottom wall of the chamber, and a flow directing system configured to receive the lower gas flow and redirect the lower gas flow in the first direction parallel to the build platform. The AM system includes one or more gas delivery devices fluidly coupled to the upper and lower gas inlets and configured to regulate one or more flow characteristics of the upper and lower gas flows and a gas outlet configured to discharge the upper and lower gas flows from the chamber.

An additive manufacturing (AM) system includes a housing defining a chamber, a build platform disposed in the chamber at a first elevation, and a lower gas inlet disposed at a second elevation and configured to supply a lower gas flow. The AM system includes a contoured surface extending between the lower gas inlet and the build platform to direct the lower gas flow from the second elevation at the lower gas inlet to the first elevation at the build platform, where the contoured surface discharges the lower gas flow in a direction substantially parallel to the build platform. The AM system also includes one or more gas delivery devices coupled to the lower gas inlet to regulate one or more flow characteristics of the lower gas flow, and a gas outlet configured to discharge the lower gas flow.

The present disclosure relates to the manufacture and use of an additive manufacturing (AM) system that employs a spacer flow guide disposed or formed within a housing that defines a chamber of the AM system. The spacer flow guide may direct various portions of a gas flow within the chamber to respective exhaust channels. For example, in combination with portions of the housing, the spacer flow guide may define a main exhaust channel that extends between the chamber and a gas outlet formed in a downstream end of the housing. Additionally, a bypass exhaust channel may be defined between the chamber and a back surface of the spacer flow guide to fluidly couple an upper portion of the chamber to the main exhaust channel.

A delivery device of a water jet comprises a delivery chamber and a safety valve suitable for reducing the water pressure in the delivery chamber when the water pressure exceeds a preset pressure threshold. The safety valve comprises a hollow housing body, a valve cartridge inserted tightly into the hollow housing body, the cartridge defining a valve seat for the passage of water and an obturator movable between a closed position, wherein the obturator closes said valve seat, and an open position, wherein the obturator opens said valve seat when a pressure greater than the preset pressure threshold value acts on said obturator. A support body is connected in a removable way to the hollow housing body and has a bottom wall on which the valve cartridge rests and which is penetrated by through-openings for the evacuation to the exterior of the water present in the hollow housing body.

An anti-backflow extrusion liquid container includes an elastic container for storing and extruding liquid, a spraying tube inserted into the elastic container, a first one-way valve for controlling the opening and closing of the spraying tube, and a second one-way valve for adjusting the air pressure in the elastic container. The first one-way valve is disposed in the middle of the spraying tube, and the second one-way valve is disposed at the bottom of the elastic container. The disclosure not only prevents the liquid in the guide tube from flowing back into the bottle body during the restoring process of the bottle body and thus avoiding the liquid in the bottle body from being contaminated, but also enables the bottle body to be restored quickly after pressing and thus prolonging the service life of bottle and improving work efficiency.

A liquid ejecting apparatus includes a liquid ejecting section from which liquid is ejected. A return passage has a first end connected to a supply passage at a first location and a second end connected to the supply passage at a second location. The second location is positioned closer to the liquid ejecting section than the first location. The return passage and the supply passage constitute a circulating passage. A pump can cause fluid to flow through the circulating passage. A replaceable filter unit is a portion of the return passage. A discharge passage through which the fluid is discharged to the outside is connected to the return passage. An inflow controller can suppress external fluid from entering the discharge passage.