Valve mechanism
A valve mechanism for a pressure chamber, particularly a pumping device, includes a tappet and a valve disk, in which the valve disk is attached to the tappet. The valve disk is provided on the tappet so as to be movable in relative manner between a starting and an end position.
1. Valve mechanism for a pressure chamber, particularly a pumping device, with a tappet and a valve disk, the valve disk being attached to the tappet, wherein the valve disk is attached to the tappet so as to be movable relative thereto, the tappet being provided a piston sleeve,
wherein the valve disk and piston sleeve have mutually corresponding support faces, which are provided with supporting force components acting radially to a pumping axis.
2. Valve mechanism according to claim 1 , wherein on the tappet is provided at least one blocking element in order to limit the path of the valve disk.
3. Valve mechanism according to claim 1 , wherein a medium channel is provided in the tappet.
4. Valve mechanism according to claim 3 , wherein the medium channel is positioned in the tappet so as to be closable by the valve disk.
5. Valve mechanism according to claim 1 , wherein the piston sleeve is loaded by at least one elastic restoring means and is attached to the tappet in relatively movable manner.
6. Valve mechanism according to claim 5 , wherein the elastic restoring means is constituted by a valve spring as a separate component for the application of a valve closing force from the piston sleeve on the valve disk.
7. Valve mechanism according to claim 6 , wherein the valve spring is supported on an annular shoulder of the piston sleeve and/or the tappet.
8. Valve mechanism for a pressure chamber, particularly a pumping device, with a tappet and a valve disk, the valve disk being attached to the tappet, wherein the valve disk is attached to the tappet so as to be movable relative thereto,
wherein on the tappet is provided a piston sleeve, which is loaded by at least one elastic restoring means and is attached to the tappet in relatively movable manner,
wherein the elastic restoring means is constituted by a valve spring as a separate component for the application of a valve closing force from the piston sleeve on the valve disk,
wherein the valve spring is positioned concentrically to a return spring of a pumping device.
9. Valve mechanism according to claim 6 , wherein the valve disk has a circumferential joint zone.
10. Valve mechanism according to claim 6 , wherein a guide section is provided on the valve disk.
11. Valve mechanism according to claim 10 , wherein the guide section is constructed as a cylinder wall.
12. Valve mechanism according to claim 10 , wherein on the tappet is provided a guide zone corresponding to the guide section and permitting a relative movement of valve disk with respect to tappet.
13. Valve mechanism according to claim 1 , wherein said tappet further comprises an annular groove, said annular groove bounded by upper and lower blocking elements; and
wherein said valve disk is retained in the annular groove by the upper and lower blocking elements.
14. Valve mechanism according to claim 13 , wherein said upper blocking element comprises a stop cone.
15. Valve mechanism according to claim 14 , wherein said lower blocking element comprises a stop collar.