SU1797806A1 - Device for propagation of ticks on free-flowing feed substrate - Google Patents

Description

The invention relates to the field of production of biological objects, in particular to technical means for mass breeding of insects in bulk nutrient media. For example, for the production of predatory mites, successfully used against pests of some greenhouse crops for biological protection of plants, the flour mite is first bred on loose feed Ohm substrate, and then on it - predatory mite.

The purpose of the invention is to increase the productivity of the process of mass breeding of insects with full use of the feed substrate.

In FIG. 1 shows a general view of the cage: in FIG. 2 is a section AA, in FIG. 1.

The cage is located on the supports 1, allowing it to rotate around a horizontal axis. Humidified air is supplied to the cage from the humidifier by a compressor (not shown) through the duct 2 through the pipe 3 in the cover 4. The casing 5 is hermetically connected by clamps (not shown) to the covers 4. Mesh 6 is installed between the flanges of the casing 5 and the covers 4 preventing the migration of insects. These nets are applied to rigid perforated sheets 7.

On the inner side of the cylindrical body 5, longitudinal ribs are fixed 8. In the body 5, mesh cylinders 9 are located concentrically located between the grids 6.

For ease of maintenance (loading and unloading material), all mesh cylinders are pre-connected to the cage 10 with a crosspiece 10 and a rod 11 connecting them with a nut 12 prior to installation in the cage.

Thus, each pair of mesh cylinders forms a cylindrical cassette 13, the thickness of which is equal to the half-difference of their diameters.

Tests of the experimental sample (layout) of the cage showed that the optimal size of the feed substrate layer (thickness of the cylindrical cassette) 5 is from

1797806 A1 up to 60 mm, and with S = 25-35 mm. mixing of the substrate is either not required at all, or it is necessary once a week: at S = 35-50 mm - 2-3 times a week, at S - 50-60 mm - 4-5 times a week. (The process of mixing the material prevents caking and improves the access of insects to the substrate and aeration of the material).

If the central mesh cylinder is used as a working cassette, then the total number of mesh cylinders in the cage will be n = 2K - 1, where K is the specified number of cylindrical cassettes (substrate layers).

If the central mesh cylinder is not used as a cartridge, then π = 2K. The mesh cells of the mesh cylinders are commensurate with the particles of the feed substrate and, for example, when using? nii wheat bran can be 1-2 mm.

At the same time, the material is moistened due to the entry of moist air from both sides of the cassette.

The operation of the device is as follows.

The cage is installed in the loading device in an upright position with one lid 4 removed and the mesh 6 belonging to it and a perforated sheet 7. Then a glass with a bottom made in the form of rings overlapping the spaces between the cylindrical cartridges 13 is installed on the casing. In addition, the glass is equipped with arched elements entering the cylindrical cassettes and partially filling their volume. After that, a predetermined volume of the insect culture substrate is poured into the glass, which is distributed among the cylindrical cassettes of the cage, filling them completely. After removing the glass, each cylindrical cartridge is underloaded by a predetermined amount. This allows you to further when turning the charge on the supports 1 to carry out the pouring of material in each cylindrical cassette, i.e., mixing. Then, the cover 4 with grids 6 and 7 clamps is connected to the flange of the housing 5 and the cage with the cylindrical cartridges 13 fixed in it is mounted on the supports 1, connected to the duct 2. connected to a source of moist air. Wet air passes through the grid 6. then into the annular gaps between the cylindrical cassettes, and - this ensures aeration of the layer of material enclosed in the cylindrical cassettes; then the air leaves through the opposite grid 6 into the atmosphere. If necessary, carry out the process of mixing the substrate, the cage is rotated (or rotated) manually (or using a drive) - carry out 1.5-2 turns at a speed of 1-2 rpm. Moreover, due to the presence of free space in each cylindrical cassette 13, material is sifted within each cassette.

In this case, there is some spillage of small fractions of the substrate, as well as insects (and their eggs) on adjacent layers of material. The material spilled to the bottom of the cylindrical cage body is returned to the surface of the outer cassette using longitudinal ribs 8. Acting as stoppers when installing the block of cylindrical cassettes 13 in the casing 5, and transport blades. For this purpose, the ribs 8. are welded with a slight slope (a) to the radius.

If it is necessary to infect the substrate with a predator, the latter is poured (with the cover 4 removed) into the free spaces between the cylindrical cassettes 13. Subsequently, it (the predator), passing through the mesh surface, is distributed in the substrate.

Predator infection can be carried out by emptying the contents of the cage and introducing into it the estimated number of insects. After that, the material is again loaded into the cage.

At the end of the growing process, the contents of the cassettes are poured out for subsequent use.

The application of the proposed device will allow, with the complete mechanization of the process of mass breeding of insects on loose substrate, to increase the output of a unit volume, as well as maximize the use of feed.

Claims (1)

Claim A device for breeding ticks on a loose feed substrate, comprising a housing rotatably mounted relative to the horizontal axis, inside which an insulated cage is located, and a humidification and air supply system, characterized in that, in order to increase productivity, the cage is made in the form of an odd number of concentrically arranged mesh cylinders, and longitudinal ribs are made on the inner surface of the housing. 6 S // / 3 b 4