| 摘要 |
<p>Device for controlling a hydraulic pump comprising flow detection means making use of an elastically hindered check valve (3), pressure detection means arranged downstream with respect to the flow detection means; and switch means (12, 23) for switching on and off the electrical power supply to the pump, operated in parallel by flow and pressure detection means. The flow detection means comprise magnetic means (9, 10, 11) integral with the check valve (3), and means (27) responsive to the displacement of the magnetic means (9, 10, 11), for operating the relative switch means (12) as a function of said displacement. Preferably, the pressure detection means comprise a pressure detection system (14) for operating the relative switch means (23) at a predetermined minimum pressure detection, to turn the pump on, and at a predetermined maximum pressure detection, to turn the pump off, a maximum pressure detection delay mechanism (15) being also provided.</p> |
