Agitation

Effective agitation of the spraying liquid is very important in gaining a homogenous spraying liquid, particularly for suspensions and emulsions. Inadequate agitation can result in crop damage, inadequate effect of the chemical and blockage of the machine.

The agitation liquid is tapped off before the spray pressure regulator and guided at increased pressure through two double injectors. This results in powerful agitation, assuming that the liquid level is above the injectors. The injectors increase the agitation capacity in relation to the liquid used by 2 to 5 times, depending on the pressure set.

If the solution tank becomes empty and the liquid level drops under the injectors, the injectors are automatically de-activated, so that the tank can be sprayed empty and foaming is limited.

With the four-way valve (A) in the pressure side (pressure selection valve), the injection agitation device can also be turned on and off completely.

Besides the agitation injectors, the pump return also causes extra agitation (B). This agitation process can also be switched off using the circulation valve (D), so that the return liquid is not returned to the solution tank but rather guided to the suction side of the pump (C).

The maximum theoretical application rate which is possible with the sprayer can be found below in the table, with the assumption that the pump is running at nominal rpm and sufficient agitation is achieved. With lower speeds, a higher application rate can be achieved.

WZ290101737
WZ290101738


A-Four-way valve
B-Return to tank
C-Return to suction side of the pump
D-Circulation valve

Pump capacity for spraying and agitation (l/min) Pump capacity required for agitating injectors (l/min) Boom Width (m) Driving speed (km/h) Maximum application rate (l/ha)
280 100 18 8 750
280 100 20 8 675
280 100 21 8 643
280 100 24 8 563
280 100 27 8 500
280 100 28 8 482

 

WZ00085,0000389 -19-17AUG05-1/1