Three-parameter detector for novel animal illegal cooking oil for rapid qualitative screening

Abstract

In order to overcome defects in the prior art, the patent provides a three-parameter detector for novel animal illegal cooking oil for rapid qualitative screening. The three-parameter detector comprises a switching power supply U1, DC-DC chips U2 and U3, a temperature detecting chip U4, a temperature probe PT100, a main control chip U5, a solid state relay U6, a heater, a display LCD, a triode Q1,an ultraviolet diode UV-LED, an ultraviolet detector U7, a TTL and 223 signal conversion chip U8, a conductivity module U9, and a conductivity electrode. The U1 is connected with the U2 and U3; the U2 is connected with the U4 and U5; the U3 is connected with the LCD and the U7; the U5 is connected with the U4, the LCD, the U6, the U7, and the U8 respectively; the Q1 is connected with the UV-LED;the U6 is connected with the heater; the PT100 is connected with the temperature detecting chip U4; the U8 is connected with the U9; and the U9 is connected with the electrode. The detector is capableof detecting the melting point, ultraviolet absorbance and conductivity of the novel illegal cooking oil; and compared with the spectrum detection, the qualitative detection is convenient and the detection cost is lowered. The three-parameter detector is suitable for the on-site law enforcement and preliminary screening by the public security department, the industry and commerce department, andthe quality inspection department. For the novel illegal cooking oil with low refinement degree, the conductivity is observed firstly; and for the novel illegal cooking oil with the high refinement degree, the melting point and the ultraviolet absorbance are observed firstly.

Description

technical field [0001] This instrument mainly involves a new type of waste oil detector, specifically a new type of animal waste oil three-parameter detector suitable for rapid qualitative screening. Background technique [0002] Saturated fatty acids, trans fatty acids, and cholesterol in the new gutter oil are significantly higher than normal edible oils, and frequent consumption will cause great damage to the human heart and brain blood vessels. During the collection process, gutter oil will be mixed with detergent components (dodecylbenzenesulfonic acid Sodium), sodium dodecylbenzenesulfonate is a kind of lipophilic and hydrophilic moderately toxic substance, which has carcinogenic effect. [0003] When the new type of waste oil is in contact with cement walls (containing As, Pb, Cd and other trace elements), underground sewage, waste iron drums, spoilage such as fruits and vegetables, domestic garbage, and various bacterial toxins, etc., it will gradually occur. A seri...

AI Technical Summary

Problems solved by technology

Traditional waste oil is also relatively mature in terms of rapid qualitative screening and detection technology, but because the new type of waste oil is derived from animal fat, its melting point, ultraviolet absorbance, and electrical conductivity are obviously different from traditional waste oil. The invention patent "Dual-parameter Rapid Qualitative Screening Detector for Animal-based Waste Oil" (Application No. 2019101233177) and the utility model patent "Dual-Parameter Rapid Qualitative Screening Detector for New Animal-based Waste Oil" (Application No. 2019202108127) are temporarily No other rapid qualitative screening instrument for new-type waste oil has been retrieved yet. The "Animal-based New Waste Oil Two-Parameter Rapid Qualitative Screening Detector" designed by Luo Shu only uses melting point and ultraviolet absorbance for detection. In subsequent experiments It is found that the dual parameters have a good detection effect on the new type of waste oil with a higher degree of refinement, but the new type of waste oil with a lower degree of refinement has a large water content, which will affect the melting point and UV absorbance, so it is necessary to add another set that can measure the new type of waste oil. Oil Conductivity Circuit

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