Automatic oil well sleeve pressure release device

The utility model provides an automatic oil well sleeve pressure release device, and belongs to a device for oilfield production. The device comprises a valve shell, a sleeve body is arranged at one end of the valve shell, and a joint is arranged at the other end of the valve shell; a valve core is arranged in the valve shell; one end of a rod is arranged in the sleeve body, and a first spring collar is fixed at the other end of the rod; a second spring collar arranged at the inner end of the sleeve body is sleeved on the rod; a spring is arranged between the first spring collar and the second spring collar; the lateral surface of the first spring collar is attached to the valve core; the valve shell outside the valve core is provided with a through hole; a valve cylinder is fixed on the outer side of the through hole; and a valve ball is arranged on a valve seat with a hole in the valve cylinder. The automatic oil well sleeve pressure release device is simple and reasonable in structure, and can realize auto