Built-in underground water drawing and recharging valve

The utility model relates to the technical field of control valves, in particular to a built-in underground water drawing and recharging valve. The built-in underground water drawing and recharging valve comprises an annular valve body and sealing glands at the upper end and the lower end of the annular valve body, oil inlet holes and water outlet holes are formed in the side wall of the annular valve body, and an inner pipe, a piston, a piston rod, a valve sleeve, a baffle, a fixing plate and a spring are arranged in the annular valve body. The inner pipe is sleeved with the piston, the piston rod is connected with the piston, the valve sleeve is arranged on the piston rod, the baffle is used for plugging the inner pipe, and the fixing plate is used for fixing the baffle. The built-in underground water drawing and recharging valve has the advantages that co-well and co-water-pipe recharging and drawing of underground water are achieved, the construction cost is lowered, the water flows out of the water outlet holes in the recharging process, the flowing speed of the water in a well is reduced, bubble floating is facilitated, recharging is prevented from being influenced by air blocking, the water flows out of the water outlet holes, throttling is achieved, the situation that due to the fact that the water is injected in a centralized mode in the recharging process, a well pipe and a water-bearing layer are blocked is avoided, the water acting force at the tail end of a recharging pipe is reduced, and the situation that due to the fact that the recharging water pipe swings, a well wall is damaged is avoided.