Grain dryer quality appraisal

grain dryer is a drum-type movable drying equipment. It can dry a variety of grains according to their characteristics. It can reduce the moisture content to less than 13%, meeting safe storage standards. The processed grains are not prone to mold and insects.
grain dryer is an important step in agricultural production and a key link in agricultural production. It is an important part of realizing the full mechanization of grain production. Grain drying mechanization technology uses machinery as the main means, adopts corresponding processes and technical measures, and artificially controls temperature, humidity and other factors to reduce the moisture content of grains without damaging the quality of grains and make them meet national safety storage standards.
Zhongke Testing and Appraisal Institute can provide quality appraisal services for gas dryers, biomass dryers, electric dryers and other grain dryers, and make accurate appraisals in terms of product design analysis, load analysis and product quality analysis.

According to the relative movement direction of grain and air flow: dryers can be divided into several types such as cross flow, mixed flow, downstream flow, counter flow, forward and reverse flow, mixed and counter flow, and forward mixed flow.
According to the type of heat source: dryers can be divided into gas dryers, biomass dryers, electric dryers, and solar dryers.
According to the drying method: fluidized bed dryer, continuous dryer, static dryer, microwave dryer.

JB/T 10268-2011 Batch circulation grain dryer
GB/T 5226.1-2019 Mechanical and electrical safety Mechanical and electrical equipment Part 1: General technical conditions
NB/T 10418-2020 Air source heat pump grain dryer
NY/T 3487-2019 Van type fruit and vegetable dryer quality evaluation technical specification
NB/T 10158-2019 Air source heat pump fruit and vegetable dryer

An agricultural company purchased two grain dryers from an agricultural machinery company. During the use of the equipment, the agricultural company discovered that the equipment repeatedly displayed hoist overload signals after installation. A dispute arose between the two companies and the company filed a lawsuit with the local court
. Our company was entrusted by the court to evaluate whether the grain dryer involved in the case met the technical requirements of the custom-made contract.
identification analysis results: The
quality analysis expert group discussed and comprehensively analyzed the relevant information, on-site investigation and inspection data, and inspection and testing data of the "grain dryer" involved in the case, and made the following quality analysis opinions :
The electrical control box doors and boxes of the two grain dryers involved in the case were not connected at equal potential and did not meet the requirements of relevant standards. The transmission devices such as transmission sprockets and chains were not equipped with protective devices. There were no warning signs on the surface. They did not meet the requirements of relevant standards and were defective.