The invention discloses a central gunite spraying
system for multiple
pig iron casting machine production lines. The central gunite spraying
system comprises a gunite spraying main pipeline, wherein agunite
return channel is arranged below the gunite spraying main pipeline, and a gunite
storage pool and a gunite mixing
pool are arranged below the gunite
return channel; a plurality of gunite spraying
branch pipes are arranged at the two ends of the gunite
return channel, a high-frequency screen is arranged at the lower end of the gunite return channel, blow-down valves are arranged at the twoends of the gunite return channel, and a gunite return groove is connected to the lower portion of the high-frequency screen; a first stirring speed
reducer is arranged in the gunite mixing
pool, wherein the upper end of the gunite mixing
pool is connected with a first gunite
pipe, a gunite supplementing pump is arranged on the first gunite
pipe, and the other end of the first gunite
pipe communicates with the gunite return channel; and a second stirring speed
reducer is arranged in the gunite
storage pool, the side end of the gunite
storage pool is sequentially connected with a second gunitepipe and a third gunite pipe from top to bottom, a pressure regulating valve is arranged on the second gunite pipe, a gunite spraying pump is arranged on the third gunite pipe, and the other end of the second gunite pipe and the other end of the third gunite pipe communicate with the gunite spraying main pipeline. The central gunite spraying
system is convenient to maintain, high in gunite
utilization rate, free of impurities, good in spraying effect and low in
power consumption and equipment cost.