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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The impact energy of the existing rock drill , the gas leg type is about 6~8kg·m; the impact frequency is no more than 2000 times/min for the hand-held type, the air leg type is not more than 2600 times/min, and the upward type is not more than 3500 times/min. The type can reach 4000 times/min; the torque, the air leg type is generally 120-180kg·m; the weight, the hand-held type is 20-25kg, the air leg type is 20-30kg, and the rail type is 40-90kg.
When selecting a rock drill , the following points should generally be considered:
Working conditions: roadway, patio, shaft, stope, field, etc.;
Drilling parameters: direction, diameter and hole depth of the borehole;
Rock properties: hardness, strength and drillability.
Refer to Table 1 for general selection.
Table 1 Application of various types of pneumatic rock drills
project
Types of
Handheld
Air leg
Upward
Rail type
Recommended eye diameter (mm)
≯40
≯45
≯50
≯75
Recommended eye depth (m)
≯3
≯5
≯6
≯20
Drilling direction
Horizontal, tilt
Vertical down
Horizontal, upturn
And down
Vertically up,
Upward 60°～90°
Horizontal, upward and
Slow down
Mineral rock properties
Coal and various rocks
Hard, hard,
Extremely hard
Medium hard, hard, very hard
Hard and hard