Rapid gas chromatograph cooling device

Abstract

The invention discloses a rapid gas chromatograph cooling device and relates to the technical field of gas chromatograph cooling. In order to solve the problem that the conventional device is long incooling time, the rapid gas chromatograph cooling device comprises a column box, a motor, an exhaust fan and a suction ventilator, wherein a hollow shaft penetrates through the middle of the top of the column box; an inverted U-shaped shaft is fixedly welded at the bottom of the hollow shaft; the motor is arranged at a position, which is positioned on one side of the hollow shaft, of the top of the column box by virtue of screws; a first gear is arranged at the end of the output shaft of the motor; a second gear is arranged on the top of the hollow shaft; the first gear is meshed with the second gear; a disc is arranged on the top of the rotating shaft; a plurality of through holes are uniformly formed in the disc; and fan blades are arranged at positions, which are positioned below the disc, of the rotating shaft. According to the arrangement of the motor, the first gear, the second gear, the hollow shaft, the inverted U-shaped shaft and the suction ventilator, the hollow shaft drivesthe inverted U-shaped shaft to rotate, so that the interior of the column box can be fully subjected to heat dissipation and cooling. Due to the arrangement of the rotating shaft, the disc and the fan blades, cyclone is formed, the heat is accelerated to take away, and the cooling efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of gas chromatograph cooling, in particular to a gas chromatograph rapid cooling device. Background technique [0002] Gas chromatography is widely used in fire investigation, petroleum, chemical industry, biochemistry, medicine and health, food industry, environmental protection and so on. In addition to quantitative and qualitative analysis, it can also determine the physical and chemical constants such as distribution coefficient, activity coefficient, molecular weight and Ruisheng specific surface area of ​​the sample on the stationary phase. A gas chromatograph is an instrument for analyzing and detecting the components in the mixed gas. After the analysis sample is vaporized in the inlet, it is carried into the chromatographic column by the carrier gas, and the components in the mixture to be detected have different retention properties. The chromatographic column separates each component, and then in...

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Problems solved by technology

[0003] In the gas chromatograph, during the working process, the air in the box and the air outside the box are circulated by controlling the switch of the rear door to achieve cooling, but because the exhaust port is adjacent to the air inlet, the hot air discharged from the upper exhaust port has Part of it enters the column box through the air inlet below, resulting in less effective cold air, prolonging the cooling time, greatly consuming the time for staff to analyze samples, and seriously reducing work efficiency

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