| 摘要 |
<p>Distributing device for a fluid material comprising: a tank (1), a pump mounted in the tank opening (2) and including an annular piston (6) which slides in a cylinder (5), an actuating rod (7, 12) sliding in the piston (6), a return spring (9) for the actuating rod (7, 12), an abutment unit (10) for the actuating rod, the latter further including a side outlet (14, 15) which is blocked by the piston (6) when the actuating rod is in its rest position but which communicates with the pump chamber (11) when said rod is moved. The device is characterized in that: (a) the actuating rod is formed of two rigidly connected parts: an exterior sleeve (7) and an interior rod (12) which sealingly fits inside the central channel of the exterior sleeve (7) and which closes an inlet pipe (8) of the pump when the actuating rod is displaced from its rest position; (b) the abutment unit (10) is attached to the tank (1), and (c) the tank has a shoulder (3) which limits the inwards movement of the pump (4) body in the tank (1).</p> |
