Starch viscosity tester and measurement method
A tester and viscosity technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of affecting the accuracy of torque and viscosity measurement, increasing the cost of starch viscosity tester, and large range, so as to ensure the measurement of starch viscosity The effect of accuracy requirements
Inactive Publication Date: 2014-09-17
SHANGHAI FANGRUI INSTR
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Problems solved by technology
[0004] There are many types of starch structures, and starches with different structures have great differences in viscosity. In order to meet the requirements for measuring starch viscosity, the torque sensor has a large range, which affects the accuracy of torque and viscosity measurement. In order to measure starches with different viscosities, different torque sensors are replaced, which increases the cost of the starch viscosity tester
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[0035] see Figure 2 to Figure 12 In order to better understand the technical solution of the present invention, the inventors of the present invention will describe in detail below through specific embodiments in conjunction with the accompanying drawings:
[0036] see figure 2 , a starch viscosity tester of the present invention includes an electric furnace 1, a rotary barrel 2, a rotor 3, a stepping motor 4, a torque sensor 5, a support 6, a lifting device 7, a temperature controller 8 and a computer 9. The stepper motor 4 operates at the speed specified in the GB / T22427.7-2008 national standard for German Brabender starch viscosity testers.
[0037] Wherein, the electric furnace 1 is placed on the support 6, and the bottom of the support 6 is provided with a horizontal screw adjustment device 61, which is used to adjust the electric furnace 1 to be perpendicular to the horizontal ground.
[0038] Rotary drum 2 is placed in electric furnace 1, because electric furnace 1 ...
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The invention discloses a starch viscosity tester in the field of testing instruments. The starch viscosity tester comprises an electric furnace, a rotary drum, a rotor, a stepping motor, a torsional moment sensor, a temperature controller and a computer, wherein the rotary drum is arranged in the electric furnace; the temperature controller is connected with the electric furnace and controls the temperature of samples in the rotary drum to be sequentially at the states of constant-speed rising, constant temperature, constant-speed descending and constant temperature again; the torsional moment sensor is coaxially connected with the stepping motor; the rotor comprises a rotating shaft and stirring paddles positioned at the bottom end of the rotating shaft; the rotor is detachably and coaxially connected with the bottom of the stepping motor by the rotating shaft; multiple through holes are formed in the stirring paddles; the rotor stretches into the rotary drum from the top of the rotary drum and can rotate in the rotary drum; the computer is connected with the torsional moment sensor. The technical effects are that the requirement for the accuracy of starch viscosity measurement can be met under the condition that the torsional moment sensor is not replaced.
Description
technical field [0001] The invention relates to a starch viscosity tester and a measuring method in the field of testing instruments. Background technique [0002] Starch is the main component of food crops. In the suspension composed of starch and water, the process of melting starch microcrystal bundles is called starch gelatinization. Starch viscosity refers to the measurement of the viscosity of the sample formed when the starch suspension is heated above the gelatinization temperature. It is an important index reflecting the gelatinization characteristics of starch. The measurement of this index is a routine measurement item in food and other industries. The current starch viscosity testers for measuring starch viscosity are all developed on the basis of German Brabender starch viscosity testers. [0003] see figure 1 , in the invention patent application with the application date of September 4, 2012 and the application number of 201220447156.0, a starch viscosity te...
Claims
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Inventor 陈宇田
Owner SHANGHAI FANGRUI INSTR