Cleaning method of each part of laboratory jet mill
Laboratory jet mill is a small area, easy to operate, easy to clean equipment, usually used for experiments or small batch processing. The laboratory jet mill is mainly a spiral jet mill. The machine is mainly composed of 4 parts, including the main body, feeder, gas path box, and collector. The following issues should be paid attention to when cleaning.
The main part of the grinding machine is the main part of the laboratory jet mill, which is generally made of 304 or 316L. The commonly used material in the pharmaceutical industry is 316L stainless steel, which has good corrosion resistance. However, even the best stainless steel will rust when it encounters strong oxidizers or is exposed to a humid environment for a long time. Therefore, after each sample of the grinder, it should be cleaned and dried so that it can be used again next time.
For cleaning the inner wall, it is not recommended to use a hard cleaning cloth of steel wire ball to clean the surface to avoid surface scratches. The nozzle aperture of the laboratory jet mill is very small and may not be directly cleaned. It is recommended to soak in an organic solvent after each use. It is best to place it in an ultrasonic cleaning machine for cleaner cleaning.
Feeder: There are electrical components, and the housing is equipped with a dust-proof device. When cleaning and cleaning each time, do not let water or dust enter the electrical components. The parts in contact with the same materials should be dried and stored dry after cleaning.
The gas circuit box and the shell material are generally made of stainless steel 304. The interior is the pipeline layout, pressure gauge, and pressure regulator. Each time you make a sample, there may be powder sticking to the surface. If the surface is not made Clean, long time, it will cause corrosion. In addition, the internal pipelines, some are made of hoses, have a certain degree of aging. If the machine is used for more than 5 years, pay attention to the leakage of the internal pipelines. If it sounds, replace the hose with a new one in time.
In addition to the above-mentioned normal internal surface maintenance attention, the maintenance of the collector mainly pays attention to the cleaning of the filter bag. The surface of the filter bag is covered with a layer of PTFE film. During the cleaning process, do not rub it hard to avoid damaging the surface film. If the membrane layer is found to be damaged, it should be replaced in time. It is recommended to prepare a few more filter bags. It is not recommended to use a set of filter bags with multiple varieties.