Flow control valve

The utility model discloses a flow control valve which is characterized in that a cavity and an orifice communicated with the cavity are formed in a valve sleeve; the valve element is movably arranged in the cavity in the first direction, a triangular groove is formed in the valve element, and a flowing space is formed between the triangular groove and the orifice; the elastic piece abuts against the cavity and the valve element. Through the hydraulic pressure difference formed at the two ends of the valve element, the valve element moves and drives the elastic piece to stretch out and draw back, and meanwhile the triangular groove is driven to change the opening-closing size of the flowing space. According to the flow control valve, when the hydraulic pressure difference exists between the two ends of the valve element, the valve element can move in the cavity of the valve sleeve and is matched with the elastic force of the elastic piece, meanwhile, the opening and closing size of the flowing space is contro