SU1457872A1 - Fish pump - Google Patents

Abstract

The invention is intended to divert young fish from fish protection devices of water intake structures, and can be used to pump fish, for example, in fish farms or during its processing. The purpose of the invention is to expand the field of application of the fish pump, increasing the reliability of the work, creating optimal conditions in the process of trans

Description

one

The invention relates to fish pumps, namely, devices designed to divert young fish from fish protection devices of water intake structures, can be used in other cases where there is a need to pump live or commercial fish, for example

measures in fish-farming facilities or fish processing plants.

The aim of the invention is to expand the field of application, increase reliability in operation, create optimal conditions for fish during transportation and reduce its injury.

FIG. 1 shows the described fish pump, a longitudinal section; in fig. 2 - fish protection device with a fish pump, general view.

The fish pump (FIG. 1) includes a housing 1 with a lid 2 and nozzles 3 and 4 on the side surface of the housing 1. In the central part of the lid 2, the mixing chamber 5 is fixed coaxially to the housing 1, having a confusion 6 at its ends located inside the fish pump housing 1 and diffuser 7.

Inside the housing 1 there is a movable ring 8, in the center of which a conical nozzle is rigidly fixed

9, obrazkuktsy with the inner surface of the confuser 6 annular nozzle

10, To adjust the position of the movable ring 8 and the mode of operation of the pump, the latter contains a device including screws 11 with gears 12, interacting with a gear wheel 13 surrounding the mixing chamber 5 and having the ability to rotate in it.

Between the movable ring 8 and the bottom 11 of the housing 1 there is a chamber 15, inside which the pipeline 16 for supplying the fish-water pulp is centrally aligned with the housing 1, the upper part of which is located with a gap 17 inside the conical pipe 9 coaxially with the latter.

A nozzle 3 located on the side of the chamber 15 has a valve 18 for adjusting the flow of water or air through the conduit 19 to the chamber 15 from an air or water supply system (not shown).

Gears 12 and gear wheel 13

closed by 20.

A fish pump 21 (FIG. 2) may include, for example, a pumping installation for irrigating fields, including a main pump 22, a trash screen (not shown), a conical filter 23 that ensures retention of young fish and small, litter, cleaning device filter from pollution (not shown), channel 24 for removal of fry and juvenile fish from filter cavity 23, pressure pipe 25 of working pump 22, pipe 26 for supplying working water to fish pump 21, valve 27.

Pump installation works as follows.

When the pumping unit is operating, the water from the reservoir passes successively

through trash grate,

the filter 23 and, having received the necessary supply of energy in the pump 22, is directed through the pressure pipeline 25 to the consumer, for example, to the irrigation system. At the same time, a portion of the water from conduit 25 is supplied to the jet to

Sh

Soy 21. The filter 23 retains the debris and juvenile fish present in the water and thus prevents them from entering the pump 22. The fish is removed from the cavity of the filter 23 through the channel 24, which is provided by the jet pump 21. The filter 23 is cleaned of debris continuously or periodically at the expense of an automatically activated cleaning device (not shown). Washed out from the filter 23 litter is removed from its cavity through the channel 24.

The working water entering the cavity of the body 1 of the fish pump flows out of the nozzle 10 at a speed of 12-18 m / s. A jet having such a speed creates a vacuum at the nozzle section 10 and the pipe 16; under the action of which water into the mixing chamber 5 comes through the pipeline 16 from the filter 23, and through the gap 17 from the chamber 15, where it is sucked through the pipeline 19. All three streams are mixed together in the mixing chamber 5 and exchange energy. From the mixing chamber 5, the total flow enters the diffuser 7 at an average rate, and then into the pipeline 24.

The flow of water entering the mixing chamber 5 from the gap 17 acts as a buffer flow, since the stream flowing out of the nozzle 10 mixes with it before entering the flow containing fish, significantly loses its initial velocity and, as a result, has the fish has less traumatic impact. Using gate 18, it is possible to establish such a flow of water in the gap 17, at which the flow rate of water mixing directly with the flow of water - fish will lie within the allowable values for a particular type of fish.

Adjustment of the fish-coca operating mode in order to obtain maximum efficiency is made by rotating screws 11 in one direction or another. When the screws 11 are rotated, the ring 8 and the connecting pipe 9 connected with it move up or down. The width of the nozzle 10 and the flow of water through it change accordingly.

If it is necessary to introduce air into the water-fish stream, then the end of pipe 19 is removed from the water. Di flow adjustment

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15 se the pr with the mind

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thirty

Me, however, is the same, but as before, you are the same in g and us and in the way of life.

The air through the fish pump is produced by the valve 18.

The location of the movable ring inside the fish pump body with the possibility of its movement along the body axis allows adjusting the nozzle width and the gap for feeding the buffer flow from the chamber in the lower part of the fish pump, eliminating the change in the longitudinal size of the pump during the adjustment process and improving the condition of fish transportation.

The fish pump can be installed in

the middle of the pipeline line, and not just at its free end (as in the prototype). As a result, the field of application of the fish pump is expanded, the trauma of young fish is reduced due to improved transport conditions, the creation of an optimal flow through the fish pump nozzle and the optimum air content in the water when transporting fish over

the pipeline.

It is possible to pump the fish over long distances.

Claims (1)

Invention Formula five 0 0 five A fish pump containing a casing, a Megy mix with a confuser and a diffuser, a movable ring in which a conical nozzle is rigidly fixed, forming an annular nozzle with the inner surface of the confuser, a device for adjusting the position of the movable ring and the operating mode of the pump with a gear wheel covering the mixing chamber, characterized in that, in order to increase reliability in operation, to expand the field of application, to create optimal conditions for fish for the transport process loosening and reducing its injury, the ring is placed inside the body to form between it and the bottom of the camera body; with a valve for communicating the chamber with the water or air supply system. // W /// // /// /// //// // /// (flu9.2