| 摘要 |
PURPOSE:To prevent the generation of paint waste water accompanied by washing and to dispense with the purifyting treatment of the waste water in a method for washing the interior of a liquid feed pipe sending the paint raw material dispersed and mixed in a stirring and mixing tank to a concn. adjusting tank provided at a lower position. CONSTITUTION:In a paint preparing part supplying the aq. paint raw material dispersed and mixed in a stirring and mixing tank 1 to a concn. adjusting tank 2 provided at a lower position under gravity through a liquid feed pipe 3 by opening the outlet opening and closing valve 4 provided to the bottom part of the tank 1, after the completion of the feeding of the dispersed and mixed paint raw material to the concn. adjusting tank 2, water W is supplied to the operation space 13 of the outlet opening and closing valve 4 while weighed to wash the interior of the liquid feed pipe containing the opened outlet opening and closing valve 4 and the peripheral part thereof and the water after washing is introduced into the concn. adjusting tank 2 as diluting water. |
