Huge damage is caused to beekeeping so-called varroatosis - bees defeat small mites. However, effective methods of dealing with it is still not developed.
Basically they boil down to the fact that the part cut out the affected areas. Positive results are achieved, treating hives drug or arrotin with formic acid. This work is very time consuming, and most importantly, the disease is not eliminated completely.
Beekeeper Amateur from Alma-ATA G. W. Laptev proposed method of dealing with varroa. Its essence is that at the temperature of + 40° mite dies, and the bees stay alive. Given this circumstance, in a closed roomy wooden box create temperature +42° and then placed her on 3-20 min. (depending on the intensity of lesion) two hive with open lids and a set in the lid of the box fan inject parrotia. The result is astounding: at the bottom of the hive, a layer of sypavshiesya mites.
Schematic diagram of the device for treatment of hives - figure 10.
Inside box some distance from stalk fastened with metal staples the electric heating element (R2, R3, R5, R6) - two top and bottom. When the air warmed to 40°, the contact thermometer B1 closes the circuit of the base of the transistor V9. Relay K1 ISU-18 and its switching system de-energizes the heaters. At the same time, if it is closed, the switch S3 starts to work fan M1, "blowing" into the hive medicine. With the S4 button fan include manually at short intervals, and the switch S2 of the heating elements transferred to the "duty" heated box.
In the power supply device is applied to output transformer frame scanning (TCEs) from old TVs or any step-down transformer at a voltage of 12 V. The relay coil mku-48 should rewind the wire sew 0.18 to fill the frame.
Fixed resistors - MLT-0,5 MO-0,5, R9 - variable resistor type SP, S1 - electrolytic capacitor K50-3 or To 50-6. The switches S1-S3 TB1-1, button - bell. Heater heating element designed for a capacity of 500 W - 1 kW each. Signal neon lamp V1-V4 placed on a common control panel.