| 摘要 |
<p>A machine (1) for pumping building materials, and presenting a tank (2) for the material to be pumped; a drive assembly (3); and a pump assembly (4) in turn presenting a piston (9) powered by the drive assembly (3) and moving back and forth inside a cylinder (8) communicating alternately, via respective nonreturn valves (17, 18), with a suction conduit (16) for drawing material from the tank (2), and with a delivery conduit (5); the delivery conduit (5) being defined by a reinforced-rubber hose (26) with a high degree of radial elasticity, to define a variable capacity alongside a variation in pressure, and so absorb the flow pulsation generated by the pump assembly and ensure sufficiently continuous output. <IMAGE></p> |
