RU121123U1 - DEVICE FOR FISHING IN FISHING LAKES - Google Patents

Abstract

1. A device for fishing in frozen lakes, consisting of a flow reflector and an aerator - a flow former, the water flow of which is directed to the flow reflector, characterized in that it is equipped with an oval unclosed fence made of waterproof material, for example, reinforced, installed on stakes in the reflected water flow a polyethylene film covering the water column from the surface to the bottom, directing the reflected water flow to the suction zone of the aerator - flow former and to the flow reflector, which ensures multiple circulation of the same volume of water from the aerator - flow former to the flow reflector and from the fence to the flow reflector and back and its intensive saturation with oxygen. ! 2. A device for fishing in frozen lakes according to claim 1, characterized in that the fence is equipped with flaps for adjusting the length and width of the aeration zone and the content of dissolved oxygen in the aeration zone.

Description

The utility model relates to lake fish farming and can be used for aeration of water and concentration of fish in the catch zone, followed by catch, for example, by net seine and (or) to keep it alive from overseas in the lake.

There is a method of aeration of water and fish concentration using a stream of oxygenated water, according to which fish are attracted from the waters of the overland lake to a satellite pond built on the shore of the lake, where they are caught with a small backwater net and (or) they are kept alive from the dead (Slinkin N .P. Growing and fishing in shallow overwater lakes. - Fisheries and fisheries, 1996, No. 3-4, pp. 22-24).

Currently, this method is successfully used in the Tyumen, Omsk and Chelyabinsk regions.

However, the manufacture of a pond-satellite requires a large investment, therefore, the cost of its manufacture does not always pay off. In addition, the manufacture of a satellite pond on many lakes is impossible or inappropriate (swampy or, conversely, high banks)

A device for fishing in overland lakes is known (taken as a prototype), consisting of a flow reflector and a stream-forming aerator, the flow of which is directed to a water flow reflector (Slinkin N.P., Novokshonov V.N., Antonov A.I. water, concentration and fishing using a turbo aerator and a flow reflector // Strategy for the development of aquaculture in the conditions of the 21st century: Abstract of the International scientific and practical conference August 23-27, 2004, Minsk, 2004. - P.237-239).

The known device is implemented and successfully used on a number of lakes in Sladkovsky and Armizonsky districts of the Tyumen region.

A disadvantage of the known device is as follows. The zone with a favorable oxygen regime for the fish when using the known device reaches a flow width of 300-400 m and a flow length of 500-600 m (Antonov A.I., Novokshonov V.N., Slinkin N.P. Ecological principles of behavior management fish in the overland lakes of Western Siberia and the Urals // Bulletin of Kurgan State University No. 4 (081), 2006.- Series: “Natural Sciences”, Issue 1.).

From the point of view of optimizing fishing and keeping the fish from being frozen, the size of the site with a favorable oxygen regime for the fish should not be large, because the larger the size of the site, the lower the density of the fish concentrated in this area, the lower the efficiency of fishing and the more oxygen is required for preserving fish from freezing.

The technical result from the use of a utility model is to saturate water with oxygen with a minimum energy (fuel) requirement, by repeatedly circulating the same small volume of water from the aerator - flow former to the flow reflector and from the fence to the flow reflector and vice versa, as well as by multiple reduction the size of the zone of distribution of the stream of oxygenated water over the water area of the reservoir, to increase the efficiency of the aerators - stream-forming agents, the effectiveness of fishing and to ensure Possibilities of regulation over a wide range by the size of the aeration zone and the density of fish in the aeration zone.

This is achieved by the fact that in the device for fishing in overseas lakes, consisting of a flow reflector and an aerator - a flow former, the water flow of which is directed to the flow reflector, it is equipped with an oval open-type fence made of waterproof poles mounted on poles in a reflected water stream, for example, reinforced polyethylene film that covers the thickness of the water from the surface to the bottom, directing the reflected water flow into the suction zone of the aerator - flow former and to the reflector of the stream, providing a lot of multiple circulation of the same volume of water from the aerator - flow former to the flow reflector and from the fence to the flow reflector and vice versa, and its intense oxygen saturation.

This is achieved by the fact that the fence is equipped with openers for regulating the length and width of the aeration zone and the content of dissolved oxygen in the aeration zone.

Figure 1 shows the device, the water flow of the aerator-stream former in which is directed to the flow reflector from a reinforced plastic film, top view, figure 2 - also, when the water flow of the aerator-stream former is directed to the lake shore, acting as a reflector of the stream, view from above.

The device consists of an aerator - flow generator 1, a flow reflector 2, a fence 3 having wings 4. The direction of flow from the aerator - flow generator to a flow reflector is shown by arrows 5, from the fence to the flow reflector by arrows 6 and from the reflector - flow generator into an unlimited space of the reservoir (in catch zone) by arrows 7.

The device operates as follows. The aerator, flow-forming device, flow reflector and fence (see Fig. 1) are placed in the pre-litigation period when the fishing object begins to experience respiratory depression from a lack of oxygen and proceeds to an active search for places with the highest content of oxygen dissolved in water (usually at 4 5 mg / dm ³ ). Using an aerator, a stream former and a fence (by changing the distance between the openings of the fence) in the area of the lake adjacent to the device, create a zone 2-3 mg / dm ³ higher than the highest oxygen content in the lake. In this mode, they work until a freeze occurs in the lake outside the aeration zone, after which they begin to fish by backwater net using the total fishing method, i.e. by covering the entire aeration zone for one note of zakidnoy net.

During two and many years of fish cultivation in the lake, large fish are caught with a large-net net, and small fish are screened out, left in the aeration zone and stored from the dead until the end of the dead time.

The device for fishing shown in figure 2, works exactly the same as the device shown in figure 1 ..

The first option (figure 1) is usually used on lakes with steep banks, and the second - on lakes with gently sloping and overgrown with vegetation shores.

The main advantages of the proposed device over the prototype are:

- multiple circulation of the same volume of water from the aerator - stream former to the flow reflector and from the fence to the stream reflector and vice versa is ensured, the maximum oxygen saturation of the water in the reflected water stream at the outlet of the stream reflector and in the catch zone with less power and aerator performance - oxygen forming agent;

- depending on the content of dissolved oxygen in the lake, it is possible to select the optimal oxygen regime in the aeration zone using the fence openings, providing the best conditions for attracting fish to the aeration zone;

- the area of the reflected water flow area is reduced 1.5-2 times and, accordingly, the area of fishing, the loss of dissolved oxygen on the oxidation of bottom sediments and the efficiency of the aerator - flow former increases.

Claims (2)

1. A device for fishing in overseas lakes, consisting of a flow reflector and an aerator - a flow former, the water flow of which is directed to the flow reflector, characterized in that it is equipped with a fence of oval open shape made of waterproof material, for example reinforced, mounted on poles in the reflected water stream a plastic film covering the water column from the surface to the bottom, directing the reflected water flow to the suction zone of the aerator - flow former and to the flow reflector, providing a multi proper circulation of the same volume of water from the aerator - flow former to the flow reflector and from the fence to the flow reflector and vice versa, and its intense oxygen saturation. 2. A device for fishing in overland lakes according to claim 1, characterized in that the fence is equipped with openers for regulating the length, width of the aeration zone and the content of dissolved oxygen in the aeration zone.