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In order to facilitate the screening of seeds of different seeds, the main technical indicators of the electric filter are as follows, taking into account the practicality of the operation convenience and the determination of the germination rate, etc.: It is applicable to single crops of various crop seeds, seeds and impurities with a mass of less than 250g. In addition to the net rate of not less than 96%, the breaking rate is not more than 0.1%.
When selecting seeds, open the feed port switch plate of the seed tank to be selected and put the seed to be selected into the seed tank to be selected. The power is turned on, the fan rotates, and the seed dressing wheel is rotated by the motor drive shaft. Under the action of the seed dressing wheel, the seed to be selected is continuously lifted. Under the action of the fan's wind blowing, the empty seed and impurities are blown into the rake drum, and the seed is left in the waiting seed drum. Open the switchboard of the cartridge outlet port. Empty trays and impurities will fall into the storage box below the tray to complete screening.
The electric filter was tested several times to determine the taper of the cone and the size of the cylinder used to place the seed to be selected and to contain the impurities. For seeds with different grain weights, different gears can be used in the screening to meet the requirements for use. The actual operation shows that the filter can meet the needs of screening tweezers and impurities, the net removal rate is high, the operation is simple, easy to carry, and has been well received by users.
At present, all the impurities in the seed should be removed before measuring the seed germination rate, 1000-grain weight, and field test. The general method for removing the scorpion is wind, water or artificial eye removal. The winnowing method is suitable for the selection of a large number of seeds. If a small batch of seeds is used for germination test or weighing and calculation of 1000-grain weight, there is no advantage if a large-scale concentrator is used; the water-extracting and artificial-eye-examination rejecting method is an empirical ingredient. High, there is no uniform standard for the proportion or method, and the determination of Xunzi is easily affected by human factors, and the use of these two methods for screening Xunzi has a large workload and low work efficiency. The electric filter is an instrument for screening seeds and its function is very obvious.