In the past, we mainly achieved the test of seed quality through vision, smell, touch, and hearing.
1. Use the eyes to judge the seed quality, such as the number of seeds, the color is normal, there is no pest, bacillary dysentery or mildew. 2. Use the nose to determine whether the seed has become rotten, spoiled, or smells. Use the nose to determine whether the seed has become rotten, spoiled, or smells. For example, the seeds that have sprouted are sweet, and the seeds that are moldy have a sour or alcoholic taste.
3. Using the touch feel, mainly for the traditional Chinese herbal seed moisture break. If the hand is inserted into the seed bag, it feels loose, smooth, has little resistance, has audible noise, and when the seeds are grasped by hand, the seed easily flows out of the hand and the moisture is small.
4. In addition, there are auditory judgments on the quality of seeds, grasp a handful of Chinese herbal medicine seeds hold tight, five-finger activity, listening to the sound of rustling, with the peel of the species to shake or raise the sound of hearing, the greater the general sound, The less water content.
These are methods that have been summarized in long-term farming in the past when technology was underdeveloped. They have been widely adopted for a long time, but they are also flawed. They can perform preliminary inspections on seeds but do not achieve quantitative quantification of seeds. Testing, and the use of instruments such as seed cleanliness workbenches, can be abstracted as concrete, allowing seed inspection work to become more clear and accurate.
1. The lift must be placed on a solid and flat ground to prevent tipping during operation.
2. Work according to the load specified on the nameplate. Overload is strictly prohibited. In case of emergency, the maximum allowable short-term overload is 10%.
3. Distribute the weight evenly in the center of the table as much as possible. Under special circumstances, allowable eccentric load: the longitudinal eccentric load shall not exceed 1 / 2 of the rated load, and the lateral eccentric load shall not exceed 1 / 3 of the rated load. The eccentric load must be about 300 mm away from the edge of the platform.
4. Materials that are easy to roll, such as pipes, must be blocked or bound properly.
5. It is forbidden to carry people on the lifting platform without manned protection. The lifting platform for carrying people is equipped with railings and anti crack valves. The anti crack valve can prevent the oil pipe from breaking and causing the workbench to fall out of control.
6. Prevent hands, feet and clothes from being squeezed when the elevator is working.
7. Press the "up" or "down" button to raise and lower the workbench. If the workbench does not move, stop the machine immediately for inspection.
8. If the lift does not lift and the overflow valve is heard, stop the machine immediately for inspection. Otherwise, the oil pump will overheat quickly and suffer serious damage. The overflow valve is used to protect the safety of the machine and operators, and cannot be adjusted arbitrarily.
9. Only when the workbench stops moving can the heavy objects be unloaded.
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