Perilla seeds (Fructus Perillae) are the seeds of perilla, a plant of the Lamiaceae family. It can be used as seasoning to remove fishy smell, increase freshness and enhance flavor. At the same time, it has certain medicinal value, and has the effects of lowering Qi, clearing phlegm, moistening the lungs, and widening the intestines.
Efficacy and role:
1. Lower qi and resolve phlegm, relieve cough and relieve asthma: Perilla seeds can relieve qi stagnation, relieve asthma and eliminate phlegm, treat cough with excessive phlegm, and chest and diaphragm fullness and tightness. They are often used with tangerine peel, pinellia, magnolia bark, etc. to lower qi and resolve phlegm. . For those who suffer from food stagnation and fullness, it can be used together with white mustard seeds and radish seeds to digest food and resolve phlegm.
2. Loose intestines and relieve constipation: Perilla seeds contain a large amount of natural oils, which can lubricate the intestines and have a good therapeutic effect on intestinal dryness and constipation. They are often used with hemp seeds, almonds, and trichosanthes seeds.
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First, the characteristics of the run-in period:
1ã€Fast wear speed Due to the effects of machining, assembly and adjustment of new machine components, the friction surface is rough, the contact area of ​​the mating surface is small, and the surface pressure is uneven. During the operation of the machine, the concaves and convexes on the surface of the parts engage with each other, and the metal scraps that have fallen off are used as abrasives to continue to participate in the friction and accelerate the wear of the mating surface of the parts. Therefore, the components (especially the mating surface) are likely to be worn during the running-in period, and the wear rate is high. At this time, if it is overloaded, parts may be damaged and early failures may occur.
2. Poor lubrication Due to the small clearance between the newly assembled components and due to assembly and other reasons, it is difficult to ensure the uniformity of the fit clearance. Lubricating oil does not easily form a uniform oil film on the friction surface to prevent wear. This reduces lubrication performance and causes premature wear of the parts. In severe cases, it can result in scratches or seizures on the surface of the precision-matched friction surface, causing failures.
3. Parts that have loosened during new processing and assembly are subject to deviations in geometry and fit size. In the initial stage of use, due to shocks, vibrations, and other alternating loads, as well as effects of heat, deformation, etc., as well as excessive wear, etc. The reason is that it easily loosens original fastening parts.
4. Leakage phenomenon Due to mechanical loosening, vibration, and heat of the machine, the machine's sealing surface and pipe joints, etc., will have leakage phenomenon; some casting, machining and other defects, difficult to find in the assembly and debugging, but Due to the vibration and impact during the operation, this defect is exposed and it is expressed as leakage (seepage) of oil (water). Therefore, the run-in period is prone to leakage.
Use and maintenance of crane running-in period
After the crane is shipped from the factory, it is generally specified that there is a run-in period of about 60 hours (sometimes referred to as the run-in period), which is defined by the manufacturing plant according to the technical characteristics of the initial use of the crane. The running-in period is an important link to ensure the normal operation of the crane, reduce the failure rate, and extend its service life. However, at present, some users neglect the special technical requirements for the new run-in period due to the lack of common sense for cranes or due to tight schedules or want to obtain benefits as soon as possible. Some users even think that, anyway, manufacturers have repair period, the machine is damaged by the manufacturer responsible for maintenance, so the machine is overloaded for a long time during the running-in period, resulting in frequent occurrence of early machine failures, which not only affects the normal use of the machine, The service life of the machine is shortened, and because the machine is damaged, the progress of the project is affected. Therefore, attention should be paid to the use and maintenance of the running-in period of the crane.