Computer filter plays a major role in screening seeds

Removal of impurities in seeds is an important step in the determination of seed germination rate, 1000-grain weight and other research work. The winnowing method is suitable for the selection of a large number of seeds. If a small batch of seeds is used in the germination test or the weighing and calculation of a thousand-grain weight, there will be no advantage if using the Daoli Selector; the experience of water selection and manual visual inspection rejection method The composition is high, and there is no uniform standard for its proportion or method. The identification of batches is easily affected by human factors. The use of these two methods to screen batches has a large workload and the work efficiency is low. The application of computer filters has changed this situation, improving work efficiency and accuracy.

The purpose of the computer filter development is to provide a portable seed batch filter, which is simple in structure, light and flexible, easy to operate, and easy to carry. In order to facilitate the screening of different seed batches, taking into account the practicality of the operation convenience and determination of the germination rate, several technical indicators of the computer filter are as follows: apply to a single batch of various crop seeds with a mass of less than 250g, batches and The net removal rate of impurities is not less than 96%, and the breakage 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. Turn on the power of the computer filter, the fan rotates, and the seed dressing wheel rotates through the motor drive shaft. Under the action of the seed dressing wheel, the seeds to be selected are continuously lifted. Under the action of the fan's wind blowing action, empty seeds and impurities are blown into the batch drum and the seeds are left in the waiting seed drum. Open the switchboard of the discharge port in the circle, the empty batch and the impurities will fall into the storage box below the bracket to complete the screening.

The selection tube of the computer filter is composed of two opposing cones and two cylinders. The taper selection cavity allows the seeds to be selected to slide along the inner surface to the seed tube to be selected so that the seeds can be seeded. Stirred and the batch was blown into the batch cylinder. The motor drives the fan and is connected with the drive shaft and the seed wheel rotates. The seed dressing wheel continuously rotates and stirs the seeds to be selected in the selected seeding cartridge to play the role of seed raising. Blowing of the batch and impurities can be performed under the blow of the fan. To the batch tube, the air deflector can make the fan's wind even. The voltage is adjustable, which can change the size of the wind so as to facilitate the screening of the seeds and impurities of different weight crop seeds. The whole structure is simple, the manufacturing cost is low, it is convenient to carry, the operation is simple, and the net removal rate is high.

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