Device and valve combination for reversing the flow of flowing media
In a device for reversing the flow of flowing media including two multi-way valves ( 21 ) which are fluidically interconnected and mounted on an adapter plate ( 32 ), the two valves are identical and are fluidically connected with one another by being pushed one into the other via rotationally symmetrical sealing members that seal in the radial direction.
1. A multi-way valve arrangement comprising two identical valve units, each valve unit consisting of a cuboid valve block, which accommodates a solenoid coil and a movable valve core, and a plate-shaped connecting block assembled together in an L-shape, both valve units being assembled in mutually opposite orientations with the valve blocks arranged side by side and between the connecting blocks, and the valve units being fluidically interconnected to permit a reversal of fluid flow by switching of said valve units.
2. The multi-way valve arrangement according to claim 1 , further comprising a common adapter plate on which the valve units are mounted, the adapter plate having connecting members associated with fluid ports of the connecting blocks.
3. The multi-way valve arrangement according to claim 2 , wherein said adapter plate has two pump ports for connection of a pump adapted to supply in a single direction of flow, and two external ports which alternatively constitute input and output ports according to the switching condition of said valve units.
4. The multi-way valve arrangement according to claim 1 , wherein each valve unit has two valve sealing seats and the valve core in each valve unit has two opposed end faces and a sealing member on each end face opposite an associated one of said sealing seats, a first one of said sealing seats being formed in the valve block and a second one of said sealing seats being formed in the connecting block of a respectively other valve unit.
5. The multi-way valve arrangement according to claim 4 , wherein the valve block has a cylindrical extension traversed by a duct that opens at the valve seat of the valve block, said cylindrical extension being sealingly inserted into a matching recess formed in the connecting block of a respectively other valve unit.