Control valve applicable to vehicle water pump

A control valve applicable to a vehicle water pump, comprising a valve body and a valve core movably disposed in the valve body, wherein the valve body comprises a valve body portion that is of a cylindrical shape and a connecting portion disposed on an end portion of the valve body portion, the valve core comprises a valve core portion sleeved with the valve body and a rack portion penetrating through the connecting portion, an outer circumferential surface of the valve body is provided with at least one first water inlet window and at least one first water outlet window, an outer circumferential surface of the valve core is provided with at least one second water inlet window adapted to the first water inlet window and at least one second water outlet window adapted to the first water outlet window, when the second water inlet window overlaps with the first water inlet window, and the first water outlet window overlaps with the second water outlet window, the valve is opened, when the first water inlet window overlaps with the outer circumferential surface of the valve core, the valve is closed, a swing arm driving the valve core to perform reciprocating movement along a vertical direction to control opening and closing of the valve is disposed on the valve body, a gear shaft engaged with the rack portion is disposed on the swing arm, the rack portion is disposed along the vertical direction, and the gear shaft is disposed along a horizontal direction;

• wherein a swing arm base is detachably connected to the connecting portion of the valve body, the swing arm base comprises a bottom plate and two placing blocks disposed on the bottom plate, the bottom plate is provided with a rack through hole allowing the rack portion to penetrate through, the two placing blocks are disposed on two sides of the rack through hole, the gear shaft is mounted on the two placing blocks, a gear of the gear shaft is suspended on the rack through hole and is engaged with the rack portion, a swing arm main body is disposed vertically with the gear shaft, the swing arm main body is located on an outer side of a first placing block of the two placing blocks, and a limiting block limiting a swinging angle of the swing arm main body is disposed on an outer circumferential surface of the first placing block.