Joint device of liquid storage tank

The utility model relates to the technical field of natural gas production equipment, in particular to a liquid storage tank connector device which comprises a connecting male buckle, a connecting female buckle and a pipe body, the connecting male buckle and the connecting female buckle are communicated through the pipe body, and a valve is arranged on the pipe body. The joint device is communicated with the rubber pipe and the liquid storage tank or communicated with the rubber pipe and an output vehicle, and after liquid output is completed, the valve on the pipe body is opened, so that the atmosphere can enter the rubber pipe, the internal pressure and the external pressure of the rubber pipe are balanced, the rubber pipe can be detached conveniently, and operation is simpler, more convenient and more labor-saving. 本实用新型涉及天然气生产设备技术领域，具体涉及一种储液罐接头装置，包括连接公扣、连接母扣和管体，所述连接公扣和所述连接母扣通过所述管体连通，所述管体上设有阀门。本接头装置连通胶管与储液罐或者连通胶管与外输车，在液体外输完成后，将管体上的阀门打开，使大气能够进入到胶管内，从而使胶管内外压力平衡，进而便于将胶管进行拆卸，操作更加简便和省力。