| 摘要 |
Radial plunger pump for hydraulic liquid, comprising a housing with radical cylinders formed therein, in each of which cylinders a plunger can be moved to and fro by means of an eccentric rotor. Each cylinder comprises a suction port and a delivery port, the suction port opening laterally into the cylinder and the delivery port being delimited by a seat which lies around the radially outer end of the cylinder and can be closed off by means of a delivery valve which is spring-loaded in the direction of the seat. The plunger is designed in such a manner that the plunger holds the delivery valve at a distance from the seat in its radially outer position. The surfaces of the head of the plunger and of that part of the delivery valve which lies in line therewith are preferably identically shaped, so that when the delivery valve and the plunger bear against one another there is no space between them. The plunger pump emits less noise than the known radial plunger pumps and has a higher volumetric efficiency.
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