RU2729153C2 - Microwave plant with conical resonators for thermal treatment of non-food wastes of animal origin in continuous mode - Google Patents

Abstract

FIELD: super-high-frequency equipment.SUBSTANCE: invention can be used for heat treatment of non-food wastes of animal origin during production of fodders. Microwave plant comprises spherical shielding housing 11 with loading branch pipe 1. Dielectric disc 8 with dielectric guide vanes and pushers 10 fitted on electric drive shaft 9 is installed inside spherical screening housing 11 along vertical axis. Cone resonators 3 with round base are uniformly connected to lower hemisphere of shielding housing 11, along their edges, axes of which coincide with radial axes of spherical shielding housing 11. Dielectric guide trays 4 with thrust elements 7 and springs 6 with radiotransparent coating are coaxially installed inside circular conical resonators 3. Conical resonators 3 are joined to spherical shielding housing 11. Extra-high-frequency generators 2 are installed at joints of spherical housing 11 and circular conical resonators 3. Emitters are directed inside working chamber. On tops of circular conical resonators 3 there are discharge holes 5 with diameter less than a quarter of wave length. Diameter of the spherical shielding case and the structural parameters of conical resonators 3 are matched with the wavelength.EFFECT: use of the invention will allow carrying out high-quality heat treatment of animal wastes.1 cl, 5 dwg

Description

The proposed invention relates to microwave equipment and can be used for heat treatment of non-food waste obtained during the processing of livestock, poultry, rabbits and other animals. Wastes from the processing of animals of all kinds include: inedible trimmings, offal, intestinal waste, udder, blood, etc.

Known equipment for the production of cooked feed ML-A17-01, having a raw material capacity of up to 2 tons per shift, with a capacity of 62 kW. The line contains a raw material grinder, a screw conveyor, a steamer mixer with heating elements and a paste preparation machine. The raw material is fed into the grinder, then the crushed raw material is fed to the steamer by means of a screw conveyor. Raw materials are cooked with constant stirring. Further, the boiled feed is additionally crushed in a pasta-preparation machine and pumped through a pipe into a container for transportation [1].

Known open biconical resonators used to increase the radiation quality factor [2]. A noticeable emission is observed from the open end of the cavity. In order to increase the radiation quality factor, open resonators are used, the cross section of which decreases from the center to the edges. In the middle part of such resonators, there are waves, the propagation constants of which decrease when moving away from the center of the resonator. When the diameter of the open end of the resonator reaches certain limiting values, which can be characterized by the value of half the diameter of the base of the conical components of the resonator, the Q-factor of the resonator is significantly reduced and its use becomes meaningless.

Taking into account such well-known provisions, we are developing a microwave installation, where a sphere serves as a working chamber, docked open conical resonators, which allow unloading finished products in a continuous mode and ensure radio-tightness.

The technical result is achieved by the fact that a microwave installation with conical resonators for heat treatment of non-food waste of animal origin in a continuous mode contains a spherical shielding body with a loading nozzle, a dielectric disk with guide vanes and pushers is installed along the vertical axis, mounted on the electric drive shaft,

at the same time, circular conical resonators are uniformly docked to the lower hemisphere of the shielding body along the perimeter, the axes of which coincide with the radial axes of the spherical shielding body, and inside which dielectric guide trays with thrust elements and springs with a radio-transparent coating are installed coaxially,

moreover, microwave generators are installed at the joints of a spherical shielding body and circular conical resonators having discharge holes at the tops with a diameter of less than a quarter of a wavelength,

the diameter of the spherical shielding body and the parameters of the conical resonators are matched to the wavelength.

FIG. 1 shows a spatial image of a microwave installation with conical resonators for heat treatment of non-food animal waste in a continuous mode (in section):

1 - loading branch pipe; 2 - microwave generator; 3 - circular conical resonator (with a round base); 4 - dielectric guide tray; 5 - unloading hole; 6 - a spring with a radio-absorbing coating; 7 - thrust element; 8 - dielectric disc with guide vanes; 9 - electric drive shaft; 10 - dielectric pusher; 11 - spherical shielding body.

FIG. 2 shows a spatial image of a spherical shielding body 11, with the location of microwave generators 2 and a loading branch pipe 1.

FIG. 3 shows a spatial image of a circular conical resonator.

FIG. 4 shows a spatial image of a dielectric disc with guide vanes and pushers.

FIG. 5 is a perspective view of a dielectric guide tray with a vibration spring (in two views).

A microwave installation with conical resonators for heat treatment of non-food waste of animal origin in a continuous mode contains (Fig. 1-5):

loading branch pipe 1;

microwave generators 2;

conical resonators with a round base 3;

guide patches 4 made of dielectric material;

discharge holes 5 located at the tops of the conical resonators;

springs with radio-absorbing coating 6;

stop elements 7, providing vibration of the dielectric tray 4;

dielectric disc 8 with guide vanes made of dielectric material;

an electric drive, the shaft 9 of which rotates the dielectric disc 8;

dielectric pusher 10;

spherical shielding body 11, which is part of the working chamber.

The main units of the microwave installation (Fig. 1) are a spherical shielding housing 11, conical resonators with round bases 3 and microwave generators 2 of low power. The working chamber is presented in the form of conical resonators 3, the round bases of which are docked with the spherical shielding body 11. In the upper part of the hemisphere of the shielding body 11, a loading branch pipe 1 is installed. For this, the shielding housing has holes in the area of the lower hemispheres. In this case, the axes of the conical resonators 3 are a continuation of the radial axes of the spherical shielding housing 11. Inside the spherical shielding housing 11, a disk 8 is installed coaxially, rotating from the shaft 9 of the electric drive. On the disc 8 there are guide vanes, and under the disc 8 - pushers 10. Disc 8, guide vanes, pushers 10 are made of dielectric material. The blades are located along the radial axes of the disk 8. The pushers 10, in contact with the thrust elements 7, raise the guide patches 4 made of dielectric material and lower, i.e. pushers and thrust elements provide vibration of the dielectric tray 4. Ultrahigh-frequency generators 2 are installed at the joints of the spherical shielding housing 11 and circular conical resonators 3. At the tops of the conical resonators 3 there are discharge holes 5 intended for unloading the finished product. To maintain the radio-tightness of the microwave installation, the diameter of the discharge opening cannot exceed a quarter of the wavelength. The diameter of the spherical shielding housing 11 and the design parameters of the conical resonators 3 are matched to the wavelength.

The technological process of heat treatment of animal slaughter waste in a continuous mode is as follows.

Turn on the electric drive of the disk (shaft 9), the grinding mechanism (not shown), which feeds the crushed non-food waste into the working chamber, through the loading nozzle 1, which is located on the spherical housing 11. Then turn on the microwave generators 2. The raw material falls on the rotating dielectric disk 8 and c by means of the guide vanes, due to the centrifugal force, it is thrown onto the dielectric trays 4. In the working chamber (in the sphere 11 and in the conical resonators 3) an electromagnetic field of ultrahigh frequency is excited. Raw materials, when moving along the dielectric disk 8 and along the dielectric trays 4, are heated, cooked and disinfected in a continuous mode. In this case, the dielectric trays 4 due to the stop elements 7 and pushers 10 are raised to the level of the dielectric disk 8 and lowered, and due to the vibration of the spring 6, the raw material moves along the dielectric trays 4 to the unloading windows 5 and is unloaded into a special container.

Sources of information:

1. askond.ru

2. Drobakhin, O.O. Microwave engineering and semiconductor electronics: Textbook [Electronic edition] / O.O. Drobakhin, S.V. Plaksin, V.D. Ryabchiy, D.Yu. Saltykov. - Sevastopol: Weber, - 2013 - 322 p.

Claims (1)

Microwave installation with conical resonators for heat treatment of non-food waste of animal origin in a continuous mode, characterized in that it is equipped with a spherical shielding body with a loading nozzle, while inside the shielding body along the vertical axis a dielectric disk with guide vanes and pushers is installed on the electric drive shaft, and to the lower hemisphere of the shielding body, circular conical resonators are uniformly docked along the perimeter, the axes of which coincide with the radial axes of the shielding body, and inside the conical resonators dielectric guide trays with thrust elements and springs having a radio-transparent coating are installed, in addition, at the joints of the spherical shielding body and circular of the conical resonators, microwave generators are installed, the conical resonators have discharge holes at the tops with a diameter of less than a quarter of the wavelength, and the diameter of the spherical shield The operating body and the parameters of the conical resonators are matched with the wavelength.

Images