Discharge control device

A discharge control device for controlling discharge of a high-pressure fluid pump via a discharge flow path through a discharge valve, the discharge control device comprising:

• a housing having a pressure space communicating with the discharge flow path on one side in an axial direction;
• a valve body disposed to be movable along the axial direction inside the housing, the valve body being disposed such that one-side end surface of the valve body faces the pressure space;
• and
• an anchor member disposed on an outer peripheral side of the valve body inside the housing and slidingly supporting the valve body, the anchor member having a valve seat surface that abuts against the valve body when the valve body moves to the other side in the axial direction, the valve seat surface being formed on an inner peripheral surface,
• wherein the discharge control device is configured such that when the valve body moves to the one side from a state where the valve body is abutting against the valve seat surface, the high-pressure fluid in the pressure space is discharged to the outside from a position on the other side of the valve seat surface in a gap between the inner peripheral surface of the anchor member and an outer peripheral surface of the valve body,
• the housing has a concave part formed on one-side internal end surface inside the housing, the concave part defining the pressure space between the concave part and the one-side end surface of the valve body,
• the one-side end surface of the anchor member has a first seal part that abuts against the one-side internal end surface of the housing to form a seal surface, and a first recessed part that is an annular recess formed on an outer peripheral side of the first seal part, and
• the one-side internal end surface of the housing has a second seal part that abuts against the first seal part to form the seal surface, and a second recessed part that is an annular recess formed on an outer peripheral side of the second seal part and facing the first recessed part.