Tester for moisture regain rate of raw cotton

Abstract

The invention discloses a tester for the moisture regain rate of raw cotton. The tester comprises a shell, wherein the shell is provided with an internal cavity; and a metal framework is arranged in the shell and provided with a testing cotton cavity. In the testing cotton cavity, a fixed insulated pole plate, a bottom insulated pole plate, left and right side insulated pole plates and left and right side baffle plates are integrally arranged, so that splicing gap is eliminated; the leakage problem of the pole plates caused by cotton fiber remained in the splicing gap is solved; the insulation problem between the metal framework and the testing cotton cavity is solved; the safe use and the correctness of the measurement of the tester are ensured; the metal framework can stably bear the pressure of 735 N and is not deformed; and the service life of the tester is prolonged.

Description

technical field [0001] The invention relates to a raw cotton moisture regain measuring instrument. Background technique [0002] Raw cotton is a substance that is easy to absorb moisture, and has strong hygroscopic and moisture-dispersing properties. Its moisture content directly affects its quality. The moisture regain of raw cotton is the moisture content of raw cotton measured under specified conditions, and the moisture content of the sample is used The difference from the dry mass is expressed as a percentage of the dry mass. The moisture regain of raw cotton is an important basis for weight in industrial and commercial transactions. In the process of trade settlement, the weight of raw cotton due to moisture absorption must be measured and deducted to conduct fair trade. Raw cotton moisture regain tester is based on cotton fibers with different moisture regain It has the characteristics of different resistance values. Under certain test conditions such as sample quali...

AI Technical Summary

Problems solved by technology

According to the principle of resistance method to measure the moisture regain of raw cotton, the existing instrument is a wooden box made of thick wooden boards, and the fixed insulating pole plate vertically arranged, and the bottom insulating pole plate vertically arranged at the bottom of the fixed insulating pole plate , Vertically arranged on the left and right sides of the fixed insulating pole plate and the side insulating pole plates perpendicular to the bottom insulating pole plate are spliced ​​and fixed in a wooden box. A movable insulating pole plate is arranged on the opposite side of the fixed insulating pole plate. The test cotton chamber is formed between the movable insulating pole plate, the bottom insulating pole plate, and the left and right side insulating pole plates. When measuring, in order to accurately measure the equivalent resistance of the raw cotton, it is necessary to test the raw cotton in the test cotton chamber. Apply a pressure of 735N to ensure that the raw cotton has a certain degree of density, so that the wooden box is easily deformed and cracked under pressure, reducing the service life of the instrument, and the splicing between the fixed insulating plate, the bottom insulating plate, and the side insulating plate The gap will also be deformed under pressure, and the cotton fiber is likely to remain in the splicing gap, which will cause the leakage of the plate and affect the accuracy of the measurement results

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