47 results about "Fish kill" patented technology

A simple system is provided to dramatically reduce the number of bird fatalities and injuries, as these are bird-kills that man should be able to do something about. Essentially, the inventive apparatus comprises one or more instantaneously inflatable mini-airbags on turbine blade leading edges which, in the “stowed position” are tightly conformally elastically wrapped around or juxtaposed to the turbine blade surface(s) and / or edges(s) thereby not affecting the blade's aerodynamic efficiency. The airbag(s) can be activated and restowed or recollapsed very rapidly, thereby not significantly negatively impacting the operational efficiency of the wind machine. In a similar manner, fish-kills or injuries taking place in the turbine impellers of hydroelectric power-generator facilities may be avoided (as opposed to ameliorated) using another inventive system and method taught herein, this one being primarily a collision avoidance system which does not require the problematic alteration of the turbine blades themselves.

The invention discloses a fish killing machine. The machine is characterized in that a scaling assembly is arranged at the left end of a rack; a left supporting block and a right supporting block in the scaling assembly are fixed at the left end of the rack; a left limiting beam and a right limiting beam are correspondingly arranged right above the left and right supporting blocks; the two limiting beams define a strip groove with a downward opening; a left swing block is supported on a circular arc shaped slideway at the top end of the left supporting block; a right swing block is supported on a circular arc shaped slideway on the top surface of the right supporting block; the top ends of the left and right swing blocks extend into the strip groove defined by the left and right limiting beams; a left turning wheel is installed in a circular hole in the middle of the left swing block via a bearing; a right turning wheel is installed in a corresponding circular hole of the right swing block via a bearing; and circular arc shaped spring pieces are arranged in inner holes of the left and right turning wheels along the circumferential direction. The machine can replace manpower to carry out the fish killing steps of scaling, belly ripping, intestine scraping, cutting into pieces and cutting into lumps, so the defects of the traditional manual fish killing mode can be well overcome.

The invention discloses an orientation and sorting device for spindle-shaped live fish, which comprises a fish unloading water tank, in which there is a fish driving plate, and a plurality of through holes are arranged on one side of the fish unloading water tank; Layer directional sliding fish chute, multi-layer directional sliding fish chute includes upper chute, middle chute and lower chute; the end of multi-layer directional sliding fish chute is provided with upper, middle and lower rows of sorting chutes, corresponding to the upper layer One side wall of the chute, the middle chute, the lower chute, and the sorting chute converge toward the other side wall in a stepped shape. Compared with the prior art, an orientation and sorting device for spindle-shaped live fish of the present invention can screen fish of different sizes and position the fish head to ensure that when the fish head is facing forward, it will Multiple side-by-side moving fish are interspersed and gathered together, and enter the fish killing machine one by one. The work efficiency is high and the manual labor is liberated.