A pump that can achieve both large volume and small volume discharge of color paste.

摘要

PROBLEM TO BE SOLVED: To provide a pump capable of realizing both a large amount discharge and a small amount discharge of a color paste. [MEANS FOR SOLVING PROBLEMS] A pump capable of realizing both a large volume discharge and a small volume discharge of a color paste, including a large volume reciprocating pump (1, 2, 5), and a large volume reciprocating pump (1, 2, 5). 5) includes a large reciprocating member (2, 2a, 2b), a large pump main body (1), and a large pump inlet / outlet (5), and the large reciprocating member (2, 2a, 2b) in the large pump main body (1). ) And a small pump body (4) on the base (102, 110) of the large pump body, and a small pump inlet / outlet (6) on the small pump body (4) The small reciprocating member (3), the small pump main body (4) and the small pump inlet / outlet (6) constitute a small positive displacement reciprocating pump (3, 4, 6). The pump capable of realizing both large-volume discharge and small-volume discharge at the color pace guarantees the discharge accuracy of the color paste discharge amount, particularly the small amount discharge amount of the color paste, and is characterized by high accuracy and simple structure. In addition, the color paste pump is excellent in leakage prevention performance, the utilization factor in the longitudinal direction of the reciprocating pump cylinder is high, and the elastic deformation of the pump frame is reduced, so that the stroke accuracy of the reciprocating pump can be improved. [Selection] Figure 1a