Intermediate dropwise adding device for chlorfenapyr production

The utility model discloses an intermediate dripping device for chlorfenapyr production, and relates to the technical field of chlorfenapyr preparation devices.The intermediate dripping device for chlorfenapyr production is characterized in that two filtering devices are arranged on the dripping device and connected with an intermediate supply system through a switching valve; the two filtering devices are arranged in parallel, the filtering devices comprise a primary filter and a secondary filter, the primary filter and the secondary filter are both connected with a backwashing device and a temporary storage tank, a filtering layer is arranged in each of the primary filter and the secondary filter, and the backwashing devices and the temporary storage tanks are located on the two sides of the filtering layers respectively. The switching valve can be switched back and forth between the two filtering devices, the backflushing device is used for backflushing sediments in the filters out, the sediments are flush