The rocker-type nozzle is a typical category of nozzles, and today we mainly introduce the components and their structural characteristics. (1) Rotating the sealing mechanism. Commonly used are radial seal and end seal two forms, by the abrasive seal ring, rubber pad (or rubber ring), anti-sand spring and other parts. (2) Runner. The passage of water flowing through the nozzle, including hollow shafts, nozzles, nozzles, stabilizers, nozzles, and other parts. (3) Drive mechanism. Consisting of parts such as rocker arm, rocker shaft, rocker spring, spring seat, etc., which is to drive the nozzle to turn. (4) Fan-shaped change to the mechanism. Consisting of the changer, reverse hook, limit ring (pin) and other parts, the role of which is to make the nozzle sprayed within the specified fan-shaped range. (5) Connections. The rocker-type nozzle is often threaded with the water supply pipe, and its connections are mostly hollow bushings of the nozzle. The structural difference between the rocker nozzle and other rotary nozzles is the drive mechanism. The drive rocker-type nozzle rotates the rocker body, which swings around the axis under the action of the jet, hitting the nozzle or nozzle with a large collision punch, causing the nozzle to rotate. This intermittent lym force force moment, short time, large force, can make the nozzle turn jet concentrated orientation, so, the rocker-type nozzle range is far and uniform. The rocker arms, rocker springs and spring mounts in the rocker arm mechanism are all set on the rocker shaft, which is fixed to the upper part of the nozzle or body. The spring end of the rocker is inserted into the frame in the middle of the rocker arm and the spring seat at the other end. There are several cross-line grooves on the upper side of the seat, and any one of the grooves can be embedded in a pin fixed to the shaft, so that the rotating spring seat can adjust the spring's elasticity, thereby changing the size of the rocker arm angle. In general, in order to facilitate the adjustment of the water depth of the rocker and reduce friction altogether, the rocker arm often uses a suspension structure. The front end of the rocker arm has a deflector, the rear has a balanced weight, and the middle is the rocker arm frame. The sowing arm, under the alternating action of the jet and spring, swings back and forth around the rocker arm shaft. Its role is first to accept the energy applied by the nozzle jet, to drive the nozzle, so that the nozzle rotates, and the second is the directer periodically cut into the jet burst to break the water column, so that the spray water is evenly distributed.