RU2629220C1 - Plant with moving microwave energy sources for heat treatment of raw material - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: plant with moving microwave energy sources for the heat treatment of loose raw materials is proposed, which comprises a toroidal resonator inside the shielding housing, along the internal perimeter of which there is a slot where radiators from microwave generators arranged uniformly on a circular platform around the periphery rotating by means of a gear motor are directed. Wherein the toroidal resonator is assembled from small-diameter tori without the surface of the inner perimeter, by means of tight mounting on a dielectric rim, with the diameter less than a quarter of the wavelength. A dielectric cable-beaded conveyor is arranged inside the rim. The maximum number of superhigh-frequency generators cannot exceed half the number of tori of small diameter, and the outermost waveguides are docked to the dielectric rim through the shielding housing and the tori of small diameters.

EFFECT: high disinfection quality of raw materials.

2 dwg

Description

The present invention relates to technological equipment for conducting heat transfer processes in a continuous mode, for example, for heat treatment, and disinfection of bulk raw materials (feed grain, animal feed, etc.).

There is an installation for disinfecting and peeling grain in an electromagnetic field of ultrahigh frequency, where a diffraction toroidal resonator is used [1].

The technological task of the invention is the improvement of microwave technology and microwave installations for heat treatment and disinfection of raw materials in a continuous mode.

The technical result is achieved by the fact that the installation with moving sources of microwave energy for heat treatment of raw materials contains a toroidal resonator inside the shielding housing, along the inner perimeter of which there is a gap, where emitters from microwave generators are directed, located uniformly on a round platform around the periphery, rotating with a gear motor ,

wherein the toroidal resonator is assembled from tori of small diameter without the surface of the inner perimeter, by means of tight mounting on a dielectric rim, with a diameter of less than a quarter of the wavelength, with a dielectric cable washer inside the rim,

in this case, the maximum number of microwave generators cannot exceed half the number of tori of small diameter, and transcendental waveguides are docked to the dielectric rim through a shielding casing and tori of small diameters.

In FIG. Figure 1 shows a schematic representation of an installation (without a shielding case) with a toroidal resonator and mobile microwave energy sources for heat treatment of raw materials:

1 - toroidal resonator, 2 - dielectric hollow rim;

3 - dielectric cable washer; 4 - a platform for moving microwave energy sources; 5 - microwave generators; 6 - gear motor for drive platform (not shown); 7 - transcendental waveguide (discharge pipe); 8 - transcendental waveguide (loading pipe);

9 - an electric motor for driving a cable washer conveyor.

In FIG. 2 shows a spatial image of the installation with a toroidal resonator and mobile sources of microwave energy:

1 - toroidal resonator, 2 - dielectric hollow rim;

3 - dielectric cable washer; 4 - a platform for moving microwave energy sources; 5 - microwave generators; 6 - gear motor to drive the platform; 7 - transcendental waveguide; 8 - loading pipe; 9 - an electric motor for driving a cable washer conveyor.

The installation (Fig. 1 and 2) consists of a shielding case (not shown), a toroidal resonator 1, a hollow dielectric rim 2, a dielectric cable washer 3, platform 4, microwave generators 5, an electric drive (gear motor) of platform 6, transverse waveguides 7, 8, an electric motor of a cable-washer conveyor 9, a plurality of small-diameter tori mounted on a dielectric hollow rim 2.

A toroidal resonator 1 is located inside the shielding case. It is assembled from a multitude of small-diameter tori, worn on a dielectric hollow rim 2. There is a gap around the entire perimeter of the toroidal resonator 1, which will allow the moving emitters from microwave generators 5 to be directed into each torus of small diameter. Moreover, the surface along the inner perimeter of each torus of small diameter is absent. A dielectric rim 2 is laid through this hole, with a diameter of less than a quarter of the wavelength (3.08 cm). In this case, an electromagnetic field of ultrahigh frequency is generated in a torus of small diameter, when the emitter is directed into it. These tori function as individual resonators. Inside the dielectric rim there is a dielectric cable-washer conveyor 3, the electric drive 9 of which is outside the shielding housing. Microwave generator blocks are placed on a round platform 4 on the periphery, which is driven by a gear motor 6 (shown conditionally). Beyond the waveguides 7, 8, designed for loading raw materials and unloading the product, mounted on a shielding housing and docked through a toroidal resonator 1 with a dielectric rim 2.

The technological process of heat treatment and disinfection of raw materials in the installation is as follows. Turn on the electric drive 9 of the dielectric cable washer conveyor 3, for dosed transportation of raw materials inside the dielectric rim 2, where the raw materials enter through the loading pipe 8. Turn on the microwave generators 5 for a certain power, and then turn on the gear motor 6 to move the round platform 4 with microwave energy sources 5 The cable washer conveyor 3 and the platform 4 move in opposite directions. In the process of moving, the emitters of microwave generators will be directed inside each small torus, where an electromagnetic field of ultrahigh frequency occurs, with a high electric field strength (more than 2 kV / cm) due to the small volume of the torus. In this case, the raw materials moving due to the dielectric cable-washer conveyor in the dielectric rim are exposed to an electromagnetic field of ultra-high frequency. In the process of repeated exposure to an electric field of high tension through a pause, the raw material is endogenously heated and disinfected. Moreover, the gradients of pressure, temperature and humidity are aligned over the cross section of the product due to a pause. Therefore, the maximum number of microwave generators cannot exceed half the number of small tori. This is due to the duty cycle of the process (the ratio of the duration of exposure to the duration of the cycle, it should be less than 0.5). The cycle provides for heating and pause. The performance of the installation depends on the number and power of microwave generators. Own quality factor of small tori is quite high, reaches 8 ... 10 thousand.

Information sources

1. Patent No. 2584029 of the Russian Federation, IPC A23N17 / 00. Installation for disinfecting and peeling grain in an electromagnetic field of ultrahigh frequency / A.A. Belov, G.V. Novikova, O.V. Mikhailova; Applicant and patent holder of ANO VO ATU (RU). - No. 2015102653; declared 01/29/2015. Bull. No. 14 - 15 s.

Claims (1)

Installation with moving sources of microwave energy for heat treatment of bulk materials, characterized in that it contains a toroidal resonator inside the shielding housing, along the inner perimeter of which there is a gap where emitters from microwave generators are directed, located uniformly on a circular platform around the periphery, rotated by a gear motor while the toroidal resonator is assembled from tori of small diameter without the surface of the inner perimeter, through tight mounting on a dielectric a rim with a diameter less than a quarter of the wavelength, and a dielectric cable washer is placed inside the rim, while the maximum number of microwave generators cannot exceed half the number of tori of small diameter, and the transcendent waveguides are connected to the dielectric rim through a shielding casing and tori of small diameters.

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