Raw fish or fish fillet and scraps, the magnetic points equipment in addition to iron after the hopper, and then through screw conveyor constantly into cooking machine. Material after cooked directly into the press within the double of the screw press, pressure for juice into the pool, squeeze the bread into the drying machine, protein by concentrated water after join the drier in drying.
Press liquid juicing preliminary after the preliminary settled to heating tank, heated to a certain temperature, and then sent to the horizontal spiral centrifuge, separating out fish slag and fish, fish liquid slag back to drying machines, fish fluid to vertical oil water separator, separating out fish oil after processing, get finished fish oil.
Fish liquid after vertical oil water separator work, fish protein water retained a variety of nutrition, such as water soluble protein, vitamins, and inorganic salts, etc. But water content as high as 90% - 95% of fish protein water must go through concentration, can add to drying machines, and can be the fish protein content increased from 2% to - 3%, fish meal production increased by 20% - 30%, so the production out of the fish meal as "whole fish meal".
The whole wet method fishmeal production should be in sealed condition, work from cooking machine, press machine, drying machine, fish, hopper, tank, tank and receiving all through the induced air pipe full concentration up to in addition to taste tower centralized processing, part of the soluble stench was cooling water solution absorption into the sewer, the other part of insoluble odor from top out, sent to the boiler room temperature combustion, deodorization back into the atmosphere, and waste water through strict processing to the state environmental protection standards before discharge, in order to protect the environment.
Structure and working principle
The twin screw press is an important role in wet pressing method of fishmeal production. It consists of main body, double-screw, screen holder and power devicet. It squeezes after cooker cooking the fish material ,and turn out is fish cake and fish liquid.
The twin screw press is carried out in a press chamber consisting of two hollow interlocked cylinders. The cylinder wall is made of heavily supported strainer plates made from stainless steel. The two press screws have tapered shafts and the screw pitch varies so that the pitch, and thus the flight distance, is greatest at the thin end of the shafts. The screws rotate in opposite senses. The material is fed in at the end where the shafts are thinner, and is carried towards the end where they are thicker. As can be seen, the space for the material gradually reduces and, to compensate, liquid is pressed out through the strainer plates surrounding the screws.
Twin screw operation
The twin screw presses are easy to operate, and the performance is easy to monitor. The closed design ensures effective deodorisation, the combination of electronic control and instrumentation enables automatic safeguarding against overload. The variable screw speed provides for the flexibility necessary to cope with various raw materials and capacities.
Features of twin screw press
1.the twin screw press compose of twin screws,which is used to squeeze the cooked fish from the cooker.
2.twin screws for good pressing and degreaseing effect.
3.the cover,doors and the screen are made of stainless steel with great corrosion proof .
4.special press ratio for special material.
5. electromagnetic speed adjustable motor, with great variable ranges, for different fish series.
6.fitting with cleaning device, reduce cleaning work for twin screw press.
7. twin screw press with whole complete structure, easy shift and installation.