COMBINED MICROIRRIGATION APPARATUS Russian patent published in 1999 - IPC

FIELD: irrigated agriculture. SUBSTANCE: apparatus has housing with cover, drop outlet and microirrigation outlet. Stem with spiral channel (drop outlet) in lower end and conical spraying valve in upper part are disposed within housing. Conical bore defining seat conforming to valve surface is made in upper part of housing. Mechanism for retaining stem in working positions is mounted in upper part of housing. Irrigation outlets are formed as windows in mechanism for retaining stem in working positions. Rod joined to stem is mounted within housing. Disk with crown gear and slots is disposed on upper part of housing. Slots are mating with vertical projections on housing inner surface. Another disk with crown gear is mounted in upper part of stem retaining mechanism and retained by closure. Disks are disposed in strict position one with respect to another. EFFECT: wider operational capabilities by performing combined microirrigation without using increased pressure in irrigation main. 2 dwg