SYSTEM FOR COLLECTING DRAIN FLUID AND DRAIN WATER OR LIKE IN GREENHOUSE, AND STRUCTURE OF SELECTOR VALVE THEREFOR

摘要

PROBLEM TO BE SOLVED: To solve a problem wherein measures against problems in collecting chemicals, etc. remaining in the piping, etc. are actually insufficient though the respective measures are taken against problems in the drain fluid of chemicals, etc. such as solidification of the remaining chemicals, clogging of the piping and a valve, generation of algae from spores of the algae remaining in the remaining drain water, injury to the piping, clogging of the piping and valve with the generated algae and freezing of the piping and valve because chemicals and water are sprayed from a nozzle of a sprayer, etc. in a greenhouse and it is necessary to collect the chemicals etc. remaining in the piping, etc. after spraying.SOLUTION: A tank, a power sprayer and a spray device are connected to one another with the piping, and a selector valve is disposed in the piping connecting the power sprayer and the spray device. The system for collecting the drain fluid and water, etc. in the greenhouse includes: a first route composed of the piping connecting the spray device, the selector valve, the power sprayer and the tank for feeding fluid and water; and a second route composed of the piping connecting the spray device, the selector valve, the power sprayer and the tank for collecting the drain fluid and water.