Stirrer used for extracting saxitoxin

Abstract

The invention relates to a shellfish extracting device, and especially relates to a stirrer used for extracting saxitoxin. The stirrer comprises a stirring tank; a heating thermal insulating device is arranged on the tank wall of the stirring tank; the heating thermal insulating device comprises a thermal insulating layer and a constant temperature jacket layer; a stirring device comprises the motor arranged on the top of the stirring tank, a driving shaft which is connected with the motor and is arranged along the axis of the stirring tank, and a stirring impeller arranged on the driving shaft; the driving shaft comprises an upper semi shaft and a lower semi shaft arranged at an interval; a plurality of rigid springs are arranged between the upper semi shaft and the lower semi shaft; the stirring impeller comprises an upturning impeller and a pressing impeller; the upper semi shaft is sleeved with the upturning impeller, and the lower semi shaft is sleeved with the pressing impeller; and the free ends of blades on the upturning impeller are designed to be slant upward. The stirrer is capable of ensuring internal temperature is constant, increasing stirring efficiency, and shortening time needed by stirring, and is beneficial for discharging after stirring.

Description

technical field [0001] The invention relates to shellfish extraction equipment, in particular to a mixer for extracting shellfish toxins. Background technique [0002] At present, the most important step in the production process of extracting shellfish toxins is to put white and clean shellfish into the reactor, add appropriate amount of water, add suitable reactants, adjust the pH within the design range, and control the temperature at 45 ~55°C, stirring for 3~10 hours; during this process, the temperature inside the reaction device should be controlled at 45~55°C. The control of this temperature is more critical, but the reactor in the prior art directly drives the internal stirring device to stir through the stirring motor, so the temperature is not constant and uneven. The phenomenon of exchange causes the temperature in the reactor to not be kept constant. Moreover, the fan blades used in the stirring device in the reactor in the prior art have the same stirring dire...

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Problems solved by technology

The control of this temperature is more critical, but the reactor in the prior art directly drives the internal stirring device to stir through the stirring motor, so the temperature is not constant and uneven. The phenomenon of exchange, resulting in the temperature in the reactor can not be kept constant

Moreover, the fan blades used in the stirring device in the reactor in the prior art have the same stirring direction for the reactants. Although t

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