Apparatus for applying liquid to particulate material.

摘要

Apparatus for applying caustic liquid to grain comprises an auger (14) for transporting the grain and a system supplying the liquid to a nozzle (22) in the auger inlet. The liquid supply system comprises a positive displacement pump (26) delivering liquid to the nozzle via an adjustable throttle valve (30). A constant liquid pressure is provided by a relief valve (36) which bleeds off excess liquid and returns it to the pump inlet. A switch (40) on the relief valve shuts down the auger and pump if the liquid supply is too low, and a switch (20) responsive to the presence of grain in the auger shuts down the liquid supply and auger if the grain supply ceases. Alternative sensors (44, 50) responsive to grain flow rate are disclosed for switching off the auger or for varying the liquid flow rate in accordance with the grain flow rate.