Prevented clamping stagnation high pressure protection voltage limiting valve and oil pump

The utility model provides a prevented clamping stagnation high pressure protection voltage limiting valve, which comprises the following components: a valve body, be equipped with the valve pocket in the valve body, follow supreme case, steel ball, spring, the bowl type stopper installed in proper order down in the valve pocket, be equipped with the A mouth that is used for the draining on the valve body, the case is having the drum structure of terminal surface down, the lateral wall of case be equipped with can with the communicating through -hole of A mouth, be equipped with the C mouth in the middle of the lower terminal surface of case, the steel ball is installed in the case and is passed through the effort and the sealed cooperation of C mouth of spring, the below of case is equipped with the P mouth that is used for the oil feed, and the voltol oil acts on on case and the steel ball through the P mouth. The utility model discloses an oil pump of installing above -mentioned voltage limiting valve is s