The utility model relates to a
check valve for a pneumatic conveying
system, and belongs to the field of mechanical
automation equipment. According to the
check valve, the arc-shaped flow guide plate is installed at the air inlet end, the
airflow direction is effectively guided,
airflow smoothly passes through the interior of the valve body,
airflow collision and turbulence phenomena are reduced, and therefore the flowing resistance is reduced by about 30%. The guide plate can also uniformly distribute airflow pressure, reduce abrasion of the valve body and prolong the service life by about 50%. In addition, a cleaning spray head is arranged in the valve body,
compressed air or other cleaning media are sprayed regularly, internal accumulated dust and impurities are removed, blocking is prevented, and normal opening and closing of the valve are guaranteed. Due to the automatic cleaning function of the cleaning
nozzle, the manual cleaning frequency and difficulty are reduced, the maintenance cost is reduced by about 50%, and the dust accumulation and blockage risks are reduced by about 70%. The
check valve is further provided with a
pressure sensor, airflow pressure is monitored in real time, accurate data are provided, abnormal conditions are found and processed in time, the safety and stability of a
system are improved, and
energy consumption of the
system is reduced by about 25%.