A sampling screw for resistance moisture meter

Abstract

The invention discloses a sampling screw rod for a resistance-type moisture meter. The sampling screw comprises a screw barrel, a pressure bearing platform and a working mechanism, wherein the screw barrel is arranged hollowly; at a one-quarter part of the screw barrel, the pressure bearing platform is connected and welded with the external surface of the screw barrel; the working mechanism and the screw barrel are integrally molded; gear teeth are uniformly distributed in the one-quarter surfaces of the pressure bearing platform and the screw barrel; screw threads are uniformly distributed inthe three-quarter surfaces of the pressure bearing platform and the screw barrel; screw grooves are formed between the screw threads; at ending parts of the screw threads, the screw threads form ending grooves with the screw barrel and the pressure bearing platform respectively; the working mechanism comprises rolling compaction grooves; the quantity of the rolling compaction grooves is 10 to 12;the rolling compaction grooves comprise rolling compaction teeth. The sampling screw rod can be used for crushing grain food at each moisture point; in addition, a grain remained between the rollingcompaction teeth easily fall; the influence on next grain measurement does not exist, and the measurement efficiency and accuracy are improved.

Description

technical field [0001] The invention belongs to the technical field of measuring instrument manufacturing, and in particular relates to a sampling screw used for a resistance moisture meter. Background technique [0002] Moisture content in grain is an important indicator for evaluating grain quality, and it is also the main reference basis for purchasers to grade and set prices. A difference in moisture is worth a penny per catty. The state divides grain quality into five grades. The bulk density of wheat and corn, and the roughness rate of rice are the main indicators. The first grade is the highest, the fifth grade is the lowest, and the grain below the fifth grade is the second grade. Other foreign-grade grains are priced by the purchasing enterprises according to the market conditions and purchased by themselves. The method of increasing the amount of grain moisture, impurities, etc. has been clearly stipulated. For example, if the content of moisture, impurities, and ...

AI Technical Summary

Problems solved by technology

This kind of moisture meter has the shortcomings of unstable rolling, uncontrollable feeding, grain residue, sticky instrument of rolled grain, unstable measurement results and large deviation of measurement results, and different models need to be used when measuring the moisture content of different grains Otherwise, there will be the disadvantage of increasing the measurement error and increasing the cost of use.

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