| 摘要 |
The invention relates to a piston pump (10) for a high-pressure cleaning device, having a pump block (40) which has a plurality of pump chambers (38), into which in each case one piston (20) dips, and having a pump head (52) which has a suction inlet (54) and a pressure outlet (88), wherein each pump chamber (38) is flow-connected via an upstroke valve (46) to the suction inlet (54) and via a delivery valve (50) to the pressure outlet (88), and having a clamping hoop (112) which engages around the pump head (52). In order to develop the piston pump in such a way that it can be produced less expensively and can be assembled more easily, it is proposed that it has a single U-shaped clamping hoop (112) which is oriented symmetrically with respect to the pump longitudinal axis (18), and that the pump head (52) and the pump block (40) form a pressure chamber (58) between themselves downstream of the delivery valves (50), in which pressure chamber (58) a piston-like central insert part (60) is arranged which is surrounded by at least one sealing element (62, 64) and has a passage (66), wherein a pressure line (86) which is oriented coaxially with respect to the pump longitudinal axis (18) is arranged downstream of the passage (66). |
