| 摘要 |
<p>PROBLEM TO BE SOLVED: To smooth the suction fluctuation of a reciprocating pump by sucking a fluid into the pump from a suction pipeline in both delivery stroke and suction stroke. SOLUTION: In association with the rotation of an eccentric cam 1ca, a piston 1p is pushed by a spring 1ps so as to enter a return stroke. At this time, pressure in a first space A is lowered, so that a brake fluid Q1 flows into the first space A through a fourth check valve 19 and a second suction port 2ip. When the piston 1p is pushed by the eccentric cam 1ca to enter a going stroke, the brake fluid in the first space A is pushed by the piston 1p to build up pressure, and the brake fluid is pushed out to a delivery pipeline Pout through a delivery port 1ep and a second check valve 18. In the going stroke, pressure in a second space B is lowered, so that a brake fluid Q2a in a suction piepline Pin flows into the second space B through a third check valve 20. When the pressure of a reservoir 12 is higher, a brake fluid Q2b in the reservoir 12 flows into the second space B through a fifth check valve 21.</p> |
