Reciprocating pump

A reciprocating pump comprising:

• a plurality of pump chambers;
• piston parts provided respectively in the plurality of pump chambers and configured to draw fluid into the pump chambers and discharge the fluid outside the pump chambers by reciprocal movement;
• a plurality of rotatably driven cams provided corresponding to the number of piston parts and configured to cause the reciprocal movement of the piston parts;
• and
• a single motor configured to rotationally drive the plurality of cams, wherein
• the plurality of piston parts are configured to move in the same direction so as to draw the fluid into the plurality of pump chambers and discharge the fluid,
• the plurality of pump chambers are provided adjacent to each other,
• the motor has a drive shaft located between the centers of the piston parts that are located at both ends in the installation direction of the pump chambers so as to be oriented in a direction that is substantially orthogonal to the installation direction of the pump chambers and is substantially orthogonal to the moving direction of the piston parts,
• the plurality of cams are aligned adjacent to each other and rotate about an axis that is parallel to the axis of the drive shaft of the motor, and
• the plurality of cams are linked to the plurality of piston parts so that the plurality of cams respectively cause the reciprocal movement of the plurality of piston parts, wherein
• the at least two pump chambers are provided side by side in a left-right direction,
• the same number of piston parts as the number of the pump chambers are configured to be movable in a front-rear direction that is orthogonal to the left-right direction,
• the motor is arranged in a vertical orientation between the center of one of the at least two piston parts that is arranged on one end side in the left-right direction and the center of the other piston part arranged on the other end side in the left-right direction so that the drive shaft of the motor faces downward, and
• the respective piston parts have extending portions provided on their edges on the cam side and configured to extend toward the drive shaft side of the motor, and the extending portions are displaced from each other in the vertical direction so as to abut the cams corresponding to the respective piston parts.