Patent ID: 7828474
Filing Date: 2010-11-09
Classification: B01F,F04B

Abstract:
1. A shot pump comprising: a cylinder standing upright in a vertical direction; an inlet having a check valve which allows a paste-like transferred substance to only flow into the cylinder therethrough, the inlet being provided at a lower end portion in a side face of the cylinder so as to be contiguous to a lower end face of the cylinder without a step difference between the lower end surface of the inlet and the lower end surface of the cylinder; an outlet having a check valve which allows the transferred substance to only flow out of the cylinder therethrough, the outlet being provided at an upper end portion in the side face of the cylinder so as to be contiguous to an upper end face of the cylinder without a step difference between the upper end surface of the outlet and the upper end surface of the cylinder; and a piston configured to vertically reciprocate in the cylinder so as to cause the transferred substance to be sucked from the inlet and then to be discharged from the outlet, wherein the ratio of a clearance between a side face of the piston and an inner side face of the cylinder to an outside diameter of the piston is 1/50 to 1/2, and the transferred substance is sucked from the inlet, is then caused to pass through the clearance between the side face of the piston and the inner side face of the cylinder, and is discharged from the outlet.