西北太平洋秋刀鱼分鱼系统的改进

Improvement measures of the Northwest Pacific saury separating system

西北太平洋秋刀鱼分鱼系统主要包括鱼水分离器和鱼体选别机。对该分鱼系统进行研究并提出改进方法有利于降低劳动成本、提高分级效果和生产效率。针对原分鱼系统,根据实际生产经验,对鱼水分离器的主体、箱体及渗水板结构和鱼体选别机的分级、支脚结构提出改进措施。改进措施具体为:(1)在鱼水分离器的主体下方设计一个排水通道,并且与水平面呈15～20°倾角;(2)鱼水分离器箱体上部设计一个挡板盖,并在鱼水分离器的箱体内层及挡板盖内层处粘附一层防水且具有弹性的热塑性弹性体(TPE);(3)渗水板设计成可拆卸的双层结构;(4)鱼体选别机的选别钢管个数增加到15根,长度增加到250 cm,分级仓增加到5个;(5)将鱼体选别机原有的固定支脚设计成可活动支脚;(6)排鱼滑板设计成与水平面夹角为30°;(7)在鱼体选别机上增设一套水幕喷射装置辅助生产作业。改进后的分鱼系统不仅适用于西北太平洋秋刀鱼的分级,还可用于其它小个体种类的分级。

The Northwest Pacific saury（Cololabis saira） separating system mainly consists of the fish and water separator and the fish size grader.Studying on the separating system and raising some improvement measures are beneficial to reducing the labor costs,improving the grading effects and productivity.Aiming at the traditional separating system,the main structure,box structure,seepage plate structure of the fish and water separator and the separating structure,stand bar structure of the fish size grader were redesigned based on the fishing experience.The improvement measures are described as follows：（1）constructing a drainage channel below the main structure of the fish and water separator,and the angle between drainage channel to the horizontal plan is about 15~20 °;（2）constructing a top cover above the fish and water separator box,and adhering a layer of flexible waterproof thermoplastic elastomer（TPE） to the inner cover layer of the box and the top cover;（3）The seepage plate is designed into a removable two-tier board structure;（4）The number of the sorting pipes increased to 15,and the length increased to 250cm,the grading storages are added up to five;（5）The original fixed stand bars of the fishing separator are redesigned into removable stand bars;（6）Fish skateboard is designed to slope about 30 °;（7）adding a set of water jet screens over the fish separator.The redesigned fish separating system is suitable for the separating of Northwest Pacific saury and the other small-size fish species.