RU2045897C1 - Apparatus for decapsulation of artemia eggs - Google Patents

Abstract

FIELD: fish farming. SUBSTANCE: apparatus for decapsulation of artemia eggs has a container mounted on a pillar. The container is provided with feeding and leadaway pipelines. In the center of the container there is a driven screw propeller. In the container there is also a filter pulled over a framework with longitudinal ribs. The screw propeller and ribs promote uniform dissolving of egg chorion. EFFECT: higher decapsulation quality; shorter treatment time. 1 dwg

Description

 The invention relates to fish farming, mainly industrial, to devices for decapsulation of eggs of fox crustaceans Artemia Salina. Decapsulated eggs are used to receive live food (Artemia nauplii) or independently as a starting food for fish larvae.

 Known devices for decapsulation of brine shrimp eggs. They consist of glass or plastic, or enamel containers, in which the eggs are mixed in a decapsulating solution by hand with some non-corrosive object or by shaking, or using compressed air. At the same time, the intensity of mixing is controlled so that the eggs are constantly in motion, without settling. Decapsulation lasts 10-20 minutes. The end of the process is determined by the appearance of orange staining of Artemia eggs. (Gusev E.E. Galeeva T.I. et al.).

 The installation for decapsulation of brine shrimp eggs described in the "Recommendations for the decapsulation and use of brine shrimp eggs for feeding larvae of carp", Krasnodar, 1984, was adopted as a prototype.

 This installation consists of two devices connected by a rubber hose and installed in metal tripod racks. The devices are located at different levels. The upper apparatus is used to prepare a decapsulating solution, the lower one to decapsulate brine shrimp eggs. In the lower apparatus there is a filter bag with a conical bottom, sewn from mill gas N 40, with a size corresponding to the shape of the apparatus. The upper part of the bag is fastened with nylon braces, the bottom is attached to a metal ring. The air for mixing the decapsulating solution and the eggs in the apparatus is supplied from the compressor by an air line and is supplied through vinyl hoses ending in a bubbler.

 Water supply for the decapsulating unit is provided by a gantry crane connected by a rubber hose to a water supply system.

 The disadvantage of this setting is the low decapsulation performance.

 In the proposed apparatus, the decapsulation of Artemia eggs occurs more efficiently (complete dissolution of the chorion) and with safety precautions. The apparatus consists of a tank with a conical bottom mounted in a tripod rack, inlet and outlet pipelines. A filter is installed in the container, stretched over the frame, which has longitudinal ribs facing the inside of the apparatus. In the center inside the filter is a propeller driven electromechanically.

 The drawing shows an apparatus for decapsulation of Artemia eggs, a longitudinal section.

 The apparatus contains a container 1 with a conical bottom, inside of which a filter 3 of gas sieve is installed on the frame 2. Inside the filter there is a propeller 4 connected to the drive 5. At the bottom of the tank 1 is connected to the discharge pipe 7 for the output of the solution and to the pipe 8 for draining the eggs. On top of the tank is closed by a lid 9 and connected by means of a pipe to the loading hopper 10, and also connected to the pipelines 11 and 12 for water supply. The hopper 10 is equipped with a pipe 13 for supplying water.

 The device operates as follows.

 The calculated volume of water is poured into the container 1 through the pipe 11. Through the hopper 10, the previously swollen Artemia eggs are poured into the container 1 with a stream of water through the pipe 13 with a spray. After that, the drive starts, which rotates the propeller 4. The solution of the brine and artemia eggs in the tank is carried out by rotation of the propeller 4, but the circular direction is constantly disturbed due to the longitudinal ribs of the frame 2, as a result of which the brine shrimp eggs move in the thickness of the solution along in three directions in a circle, up and down, without settling on the walls and bottom of the filter 3. Moreover, the pressure inside the apparatus does not increase. The device is closed hermetically. After decapsulation is completed, the spent solution is removed from tank 1 through line 7. Eggs remain in the filter 3, they are poured with clean water through line 11 and the propeller is turned on 4. Eggs are washed in running water with the open outlet pipe 7. Decapsulated eggs are drained from the apparatus together with water through line 8 while flushing from the walls of the filter with water from line 12 with a spray. The duration of the entire process from pouring water into the apparatus to drain the eggs is 30 minutes.

 Thus, the use of a propeller allows mixing the solution with brine shrimp eggs in a circle, and the presence of longitudinal ribs up and down. The container is airtight, mixing occurs without eggs settling to the bottom and sticking to the walls. All this ensures that the eggs are in suspension throughout the entire process of decapsulation, contributing to the uniform dissolution of the chorion of eggs, improving the quality of decapsulation, reducing processing time and reliability of safety procedures for staff. Productivity 30 kg / h.

 An experimental sample was made, tests were conducted, and on the basis of the tests performed, the commission found that the proposed apparatus can be used to decapsulate artemia eggs.

Claims (1)

 APPARATUS FOR DECAPSULATION OF ARTEMY EGGS, containing a container installed in the rack, a filter and inlet and outlet pipelines, characterized in that the container is sealed and provided with a propeller installed in its center connected to the drive, and the filter is mounted on a frame with longitudinal ribs.

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