Automatic drip irrigation control valve

The utility model provides an automatic drip irrigation control valve, its is main includes the valve body, the sealed lid of, body, leak protection case, ejector pin, acrosome, super absorbent polymer resin its characteristics lie in having valve body water inlet and valve body delivery port on the valve body the leak protection case is connected with the ejector pin inside lieing in the valve body, can reciprocate sealed lid is connected with the valve body of top. The sealed lid of body and top is connected, has the absorption water hole of equipartition on the body apart from the body bottom in 12 the altitude range the acrosome is connected with the ejector pin inside lieing in the body inside the super absorbent polymer resin lay in the body, in the acrosome below, humidity inflation and shrink according to soil will make the acrosome reciprocate when the roots of plants water lacks, the root of the plant stem will absorb the moisture of soil on every side, and the super absorbent polymer resin can be because soil moisture disappearance and shrink on every side results in the leak protection case to move down under hydraulic effect, and the valve body water inlet switches on with the valve body delivery port, and water will flow the root of the plant portion, irrigate the plant when water reached the bottom of body, soil is inside to have sufficient water, and the super absorbent polymer resin passes through the absorption water hole absorbed moisture on the body and expands, and super absorbent polymer resin inflation back will make the acrosome, the ejector pin, and the rebound of leak protection case, the leak protection case hinders switching on of valve body water inlet and valve body delivery port, stops to drip irrigation this is automatic drips irrigation the device, simple structure, and convenient operation practices thrift the water source, has the characteristics of wide use in the agricultural production field