Water injection valve for hydraulic press

The utility model discloses a water injection valve for a hydraulic press. The water injection valve comprises a valve body, a valve seat, a plunger, a valve core and a driving mechanism, wherein a valve channel, a water inlet and a water outlet are formed in the valve body; the valve seat is installed in the valve channel, the outer wall of the valve seat is connected with the inner wall of the valve channel in a sealed mode, a connecting channel is arranged on the inner side of the valve seat, and the valve seat is located between the water inlet and the water outlet. The plunger is directly or indirectly connected into the valve channel in a sliding mode and has a closing position and an opening position in the sliding process. The valve element is connected to the plunger and used for abutting against the valve seat in a sealed mode so as to block the connecting channel when the plunger slides to the closing position. The driving mechanism is connected with the plunger and used for driving the plunger to