LZV series bell valve spore adopts Y type refractory castings to ensure the long-term stability of refractory materials and effectively prevent castings from falling off. With an equal percentage flow characteristic, the spire can precisely regulate and control the temperature of the flue gas inlet with extremely high sensitivity. In addition, it is also equipped with advanced imported multi-turn electric actuators to achieve automatic control of flue gas inlet temperature.

The spool grab nail is made of 310S steel plate, welded to the spool cover after Y-shape cutting, and the refractory castable is poured on it. In order to reduce the friction effect of the original spool vibration on the packing, the Min-core is designed into a taper parabolic shape to reduce the influence of eddy current on the spool vibration. The packing seal is achieved by the air between the drying tower and the sulfur burning furnace

A DN25 pipeline is introduced into the pipeline, and the positive pressure sealing method is adopted, and its structure is similar to the packing seal structure of the centrifugal pump. This series of measures effectively solve the problems of spool refractory casting material falling off, Fujian core vibration, packing leakage and internal leakage of the spool.