Patent EP-2186937-A1 (EP)
Inventor: KEUERLEBER THOMAS
IPC: D21F1/34
Filed: 2009-10-28
Abstract: The valve assembly (1) comprises an inlet (3), an outlet (4) connectable with a consumer, a valve device (5) arranged between the inlet and the outlet for controlling the volume flow (V) of the medium, a housing (17), and a pulsation damper. The valve device is downstream to a flow divider (6) for dividing the volume flow of the medium into two partial volume flows. The flow divider is designed, so that a first partial volume flow is guided to the outlet and a second partial volume flow is guided into the bypass to the outlet, and comprises an inflow and two outflows. The valve assembly (1) comprises an inlet (3), an outlet (4) connectable with a consumer, a valve device (5) arranged between the inlet and the outlet for controlling the volume flow (V) of the medium, a housing (17), and a pulsation damper. The valve device is downstream to a flow divider (6) for dividing the volume flow of the medium into two partial volume flows. The flow divider is designed, so that a first partial volume flow is guided to the outlet and a second partial volume flow is guided into the bypass to the outlet, and comprises an inflow and two outflows, which are coupled with one another under the formation of two flow paths. The division of the volume flow of the medium into two partial volume flows is describable as function of the formation and dimension of the assigned flow paths. The valve device has an inflow forming the inlet of the valve assembly or connectable with the inlet of the valve assembly, an outflow connectable with the flow divider, and a unit for controlling the volume flow. The valve device and the flow divider are formed by separate construction units, where the outflow of the valve device is connected with the inflow of the flow divider. The valve device and the flow divider are spatially separately arranged from each other and the outflow of the valve device is coupled with the inflow of the flow divider over a connection line. The valve device and the flow divider are arranged to each other in a flange-mounted manner, and are implemented as integral construction unit. The inlet of the valve assembly is formed from the inflow of the valve device, the inflow of the flow divider is formed from the outflow of the valve device and the outlet of the valve assembly is formed from a first outflow of the flow divider. The housing comprises a blind bore opening at the outer periphery, a first through-opening opening from the outer periphery into the blind bore and forming the inlet of the valve assembly, a second through-opening opening from the outer periphery into the blind bore, subordinated in a flow direction of the first through-opening and forming the outlet of the valve assembly, and a controllable piston of the valve device forming a valve seat with the through-opening. The two outflows of the flow divider are connectable with an external pipeline and a flow media supply device, and connected with the inlet of the valve assembly over a return flow, which is integrated in the housing of the flow divider and optionally in the housing of the valve device. The individual flow paths are equally or variably dimensioned between the inflow and the outflows of the flow divider. A diameter ratio between the individual outflows and the inflow of the flow divider is 1:4. The first outflow of the flow divider is dimensioned smaller than the second outflow of the flow divider. The valve device is implemented as a needle valve, a clocked 2/2-way valve or a directional valve. The flow divider forms a constructional unit with a nozzle coupled with the first outflow. An independent claim is included for a device for applying a liquid or pasty application medium on a movable fibrous material web.