The purpose of this work is to substantiate the parameters and modes of operation of the ultra-high-frequency plant for separating the down from the skins of rabbits in continuous mode. In connection with the goal, the following tasks are solved: to determine the required power of electromagnetic radiation to reduce the bacterial contamination of the raw material; to determine the critical intensity of the ultrahigh frequency electric field that ensures the destruction of microorganisms in the raw material; to agree on the magnitude of the electric field strength with its own quality, the volume of the resonator and the performance of the installation; to justify the configuration of the resonator, providing the critical electric field, high quality, radiopharmacist in the continuous mode of operation; to develop microwave installation, microwave technology implements the separation of disinfected feathers from skins of rabbits. In the work of the applied theory of the electromagnetic field of ultrahigh frequency (EFUF). The bactericidal effect of EFUF exposure was investigated according to the Lambert-booger law and the Sokolov V. F. method. The rationale for the critical electric field strength that ensures the destruction of microorganisms in raw materials, carried out by the method of Korchagin and the Development of a biconical resonator, enhancing radiation q-factor at heating the skins in continuous mode was carried out according to the method Drobinin O. Justified modes of operation of the microwave installation for decontamination and separation of fluff from the skins of rabbits in continuous mode at the critical electric field and high q-factor biconical resonator, providing radiopharmacist. The results of calculating the distribution of the electromagnetic field intensity, current density and q-factor of the biconical resonator obtained by the program CST Microwave Studio in the transient mode are presented. The development of microorganisms stops only when the electric field strength in the resonator is above 1.2 kV/cm. Truncated biconical resonator, with a volume of 350 l with its own q-factor of 7000, with the power of the magnetrons 3200 watts will provide the electric field strength of 1.2 m to 1.5 kV/cm and reduced the total microbial number in half for continuous operation of the microwave installation. The developed microwave plant contains a horizontally located, symmetrical truncated biconical resonator, inside which the working branch of the conveyor made of fluoropolymer mesh belt is coaxially installed. In the region of the cone vertices there are cracks whose width is greater than the width of the ribbon, and the height of the cracks is less than a quarter of the wavelength. Magnetrons are located in the base area of the cones, and the generator of one cone has a pneumatic line, and the other – a brine spray.

microwave installation, biconical resonator, the critical electric field strength, q-factor, a bactericidal effect, the skins of rabbits, brine

1. Mac-Donald A. Microwave breakdown in gases. Moscow: Mir, 1969. 167 p.

2. Belova M.V. Razraborka sverkhvysokochstotnykh ustanovok [Development of ultrahigh-frequency plants for heat treatment of agricultural raw materials] Moscow, VIESKh, 2016. 40 p. (in Russian).

3. Ginzburg, A.S. Raschet I proektirovanie [Calculation and design of drying installations of the food industry] Moscow, Agropromizdat, 1985. 336 p. (in Russian).

4. Grigoriev A.D. Elektrodinamika I mikrovolovnaya [Electrodynamics and microwave technology] Saint-Petersburg, Lan’, 2007. 704 p. (in Russian).

5. Drobakhin O.O., Plaksin S.V., Ryabchiy D.V., Saltykov D.Yu. Tekhnika I poluprovodnikovaya [Electronics and semiconductor microwave electronics: a tutorial] Sevastopol, Weber, 2013. 322 p. (in Russian).

6. Drobakhin O.O. Resonant properties of axially symmetrical microwave resonators with conical elements. Radiofizika raioastroomiya [Radiophysics radio astronomy] 2009, no. 14, pp. 433–441. (in Russian).

7. Kolomeytsev V.A. Electrodynamic and thermal properties of microwave ovens in different ways and systems of excitation of the electromagnetic field in the working chamber. Voprosy elektrotekhnologii [Questions of Electrotechnology] 2014, no. 2(3). pp. 28–34.(in Russian).

8. Novikova G.V., Zhdankin G.V., Mikhailova O.V., Belov  A.A. Analysis of developed ultrahigh-frequency plants for heat treatment of raw materials. Vestnik KazGAU [Proceedings of Kazan state agrarian University] 2016, no. 4 (42). pp. 89–93. (in Russian).

9. Sposob sterilizatsii pri pomoshchi SVCh izlucheniya [Patent number 2161505. Method of sterilizing materials by means of microwave radiation with a high field strength and device for implementing the method] Available at; http://ru-patent.info/21/60–64/2161505.html. (in Russian).

10. Pchelnikov Yu.N. Elektronika sverkhvysokikh chastot [Electronics of ultrahigh frequencies] Moscow: Radio and communication, 1981. 96 p.(in Russian).

11. Rogov I.A. Elektrofiizcheskie, opticheskie I akusticheskie [Electrophysical, optical and acoustic characteristics of food products] Moscow, Light and food industry, 1981. 288 p. (In Russian).

12. Rubtsov P.A. Primenenie elektricheskoi energii [Use of electrical energy in agriculture] Moscow, Kolos, 1964. 502 p. (In Russian).

13. Strekalov A.V., Strekalov Yu. A. Elektromagnitnye polya I volny [Electromagnetic fields and waves: textbook] Moscow, RIOR: INFRA-M, 2014. 375 p. (In Russian).

14. Shamin, E.A. Technologies of processing of fur raw materials of rabbits. Vestnik KazGA [Proceedings of Kazan state agrarian university] 2017. no. 3(45). pp. 61–67. (in Russian).

15. Chursin, V.N. The influence of low-temperature processing of raw materials on the structure of the derma. Kozhevenno-obuvnaya promyshlennost’ [Leather and footwear industry] 2004. no. 2. pp. 40–41.(in Russian).

16. Perspektive krolikovodstva [Prospective of rabbit breading] Available at: agbz.ru articles / perspektivy-krolikovodstva. (in Russian)

17. Burdo O.G., Terziev S.G., Yarovoy I.I., Borsch A.A. Modeling of food raw material dehydration processes in the electromagnetic field. Vestnik VGUIT [Proceedings of the Voronezh State University of Engineering Technologies]. 2013. no. 3. pp. 62-65. (In Russian)