摘要:
The invention relates to a conveyor device for a vacuum distillation plant for substance mixtures that polymerize and/or decompose readily, in particular acrolein, in which plant an intermediate product formed in a preliminary stage is delivered by means of a pump into a vacuum distillation column (37). The invention is characterized in that the pump is a hermetically sealed centrifugal pump (31) having a magnetic coupling, and in that a pressure holding control valve (34), which is configured to adjust the throughput of the centrifugal pump (31) to a predetermined value, is provided between the centrifugal pump (31) and the vacuum distillation column (37).
摘要:
Poppet valve for a piston compressor, having a valve body with a plurality of inlet ducts, wherein each inlet duct has an inlet section and an outlet section. The outlet section opens into a valve seat, wherein each inlet duct is assigned a closing element and a spring. The closing element can be moved in an axial direction (A) in such a way that the valve seat can be closed by way of the closing element. The spring has a first spring end section and a second spring end section, wherein the spring is arranged in the inlet duct and bears with the first spring end section against and is held on the inlet section of the inlet duct. The second spring end section is connected to the closing element, to bring about a pre-stressing force on the closing element, which pre-stressing force is oriented towards the valve seat.
摘要:
A pressure relief valve includes a valve seat at the outlet, a valve body, and an air dashpot damper. In some embodiments, the valve body is configured to engage the valve seat and move along a central axis relative to the valve seat in response to a pressure at the outlet to regulate a flow of combustible gas through the outlet. In some embodiments, the air dashpot damper includes a tubular member having a closed distal end and an open proximal end, and a piston member received within the tubular member. In some embodiments, the tubular member or the piston member is attached to the valve body, and the piston moves relative to the tubular member along an axis of the tubular member in response to movement of the valve body relative to the valve seat. In some embodiments, the pressure relief valve includes a plurality of the air dashpot dampers.
摘要:
A coupling apparatus for a floor drain which includes a hollow body having an exterior surface and an interior surface, with the interior surface defining a flow chamber. A primary inlet extends through the exterior surface of the body into the flow chamber; the primary inlet being of a first size to accommodate a drainage line from a hot water tank. At least one secondary inlet extends through the exterior surface of the body into the flow chamber. Each secondary inlet is of a second size, smaller than the primary inlet, in order to accommodate a smaller drainage line. A single outlet through the exterior surface of the body is provided for draining the flow chamber.
摘要:
A charge air cooler comprises an outlet tank having a drain mechanism integrated in a wall thereof. The drain mechanism comprises a first valve head disposed to a first side of the wall, a first spring member disposed between the first valve head and the wall, a second valve head disposed to a second side of the wall, a second spring member disposed between the second valve head and the wall, and a valve stem coupled to each of the first valve head and the second valve head. The valve stem is reciprocatingly disposed within an aperture formed in the wall. The drain mechanism is configured to be in a closed position when an internal pressure within the outlet tank is at least one of greater than a first pressure value and lower than a second pressure value.
摘要:
A check valve is provided which may be installed horizontally or in other non-vertical orientations, and used with variable frequency drives and other applications without the valve becoming misaligned. In one aspect, the valve includes a housing with an inner surface and a passage. A flange within the housing divides the housing into upstream and downstream portions, and extends around the inner surface, defining a valve seat and a valve aperture. A poppet is positioned in the downstream portion. The poppet includes a valve head and a plurality of guide legs extending from the valve head and into the downstream portion, and not through the valve aperture. The valve head is resiliently biased in the closed position against the valve seat to inhibit fluid flow in a first direction. A guide disposed within the housing receives the plurality of guide legs of the poppet valve as the poppet valve moves between an open position and a closed position.
摘要:
The invention relates to a valve for controlling a gas flow, as it is used, for example, for controlling the gas flow between a crankcase and an intake tract of an internal combustion engine. The invention further relates to a liquid separator and to a ventilation system for the above-mentioned exemplary use for a crankcase and to an internal combustion engine.
摘要:
An overpressure or relief valve (30) for a buoyancy compensator device (10) for underwater use of the type comprising an expandable bag (12) internally provided with at least one air chamber is disclosed. The valve (30) comprising at least one mobile shutter element (32) configured to occlude at least one corresponding hole (62) formed on an abutment plate (46) that is configured to be applied on a wall of the air chamber. The mobile shutter element (32) being operatively connected to a first end of an elastic element (34), whereas a second end of said elastic element (34) is in turn operatively connected to an electric actuator element (36), actuated by an electrical current and configured to counteract, in certain operating conditions of the valve (30), the elastic force of the elastic element (34), so as to perform the selective opening and closing of the mobile shutter element (32) and, consequently, respectively allowing or preventing air from the hole (62), and then from the inside of the air chamber, from passing towards one or more through holes (58) formed on the outer body (60) of the valve (30) and vice versa.
摘要:
A relief valve coupled to a container is disclosed. The relief valve may include a valve body forming an internal chamber, an inlet portion connected to the chamber and configured to receive content flow from the container, a spring, a poppet including a seat disc, wherein a spring force exerted by the spring biases the seat disc towards the inlet portion, and a cap configured to include a plurality of passages.
摘要:
A water output switch structure of a faucet includes a water output switch structure of a faucet comprising a faucet main body, a water guiding duct, a switch valve, and a positioning unit including an adapter, a locking unit, a water-stopping pad and a water-stopping ring. The switch valve has a valve stick that moves horizontally, so a pulling head of the valve stick would not fall down unexpectedly due to gravity to change the status of water output.