The first thing that one should understand is why seeds are purified. Generally, seeds are prepared prior to any planting in order to remove the chaff from it in order to allow sowing through mechanical planter and also enable the seed storage with minimal chances of fungal or bacterial infections. If well analyzed, this activity helps in determining the purity of seed collection. The machinery used in carrying out this important step in agriculture is referred to as a seed cleaning equipment.
This requires a series of machines like gravity tables, air screeners, magnet to trap any pieces of magnetic metals, cylinder separators among others. These facilities are widely used to process seeds from crops such as barley and maize. Nevertheless, it is not possible to get a single equipment for seed cleaning that can work satisfactorily on all types of seeds.
In selecting a machine for your work, consider the size of the seed to be worked on and the chaff surrounding that specific seed that is to be removed. One that can do a good job on various sizes of seeds can be considered cost-effective. This can be attributed to the fact that the seed has to run through various machines before it goes to the final stage of packing and storage.
There are two terminologies involved in such machinery, that is, simple machine which has only one working part or two and a complex machine with several working parts. The most important part is the screen which depending on the manufacturer can have various sizes. Labeling of these machines simplifies the initial stages of the processing by specifying the size of the screen since the native seeds vary in size. There are some machines that are mobile and some that are stationery in the design each of which has its own advantages and disadvantages.
Differences in size, width and length of the seeds affect the operating principles of the machinery. Other factors to be considered include specific weight, shape, surface conditions and aerodynamic conditions.
This technology is a low cost initial investment. It is also economical in maintenance with most parts readily and easily made available. There are no worries in searching for the spares and in some situations they are provided with extra for replacement.
Applying simple and effective techniques to clean moderate amounts of seeds and proper cleaning is essential in removing much of the inert materials and dust and also remove empty, non-viable grains. These cleaning methods involve various means of threshing and sorting seeds using screens and airflows.
No matter how normal some seeds may appear, they may be non-viable for to be used since they have loss of weight. This can be due to immaturity, underdevelopment or feed by predators. Such cannot be separated by screening and thus necessitates airflow. Airflow is done through winnowing or aspiration. Winnowing is a technique which uses flowing air in a horizontal manner in such a way that heavy particles are separated from light. Aspiration is the use of vertically flowing air that suspends the light particles in form of a column.
Materials such as dust masks, plastic containers, heavy boots and gloves may also be necessary in the process.
This requires a series of machines like gravity tables, air screeners, magnet to trap any pieces of magnetic metals, cylinder separators among others. These facilities are widely used to process seeds from crops such as barley and maize. Nevertheless, it is not possible to get a single equipment for seed cleaning that can work satisfactorily on all types of seeds.
In selecting a machine for your work, consider the size of the seed to be worked on and the chaff surrounding that specific seed that is to be removed. One that can do a good job on various sizes of seeds can be considered cost-effective. This can be attributed to the fact that the seed has to run through various machines before it goes to the final stage of packing and storage.
There are two terminologies involved in such machinery, that is, simple machine which has only one working part or two and a complex machine with several working parts. The most important part is the screen which depending on the manufacturer can have various sizes. Labeling of these machines simplifies the initial stages of the processing by specifying the size of the screen since the native seeds vary in size. There are some machines that are mobile and some that are stationery in the design each of which has its own advantages and disadvantages.
Differences in size, width and length of the seeds affect the operating principles of the machinery. Other factors to be considered include specific weight, shape, surface conditions and aerodynamic conditions.
This technology is a low cost initial investment. It is also economical in maintenance with most parts readily and easily made available. There are no worries in searching for the spares and in some situations they are provided with extra for replacement.
Applying simple and effective techniques to clean moderate amounts of seeds and proper cleaning is essential in removing much of the inert materials and dust and also remove empty, non-viable grains. These cleaning methods involve various means of threshing and sorting seeds using screens and airflows.
No matter how normal some seeds may appear, they may be non-viable for to be used since they have loss of weight. This can be due to immaturity, underdevelopment or feed by predators. Such cannot be separated by screening and thus necessitates airflow. Airflow is done through winnowing or aspiration. Winnowing is a technique which uses flowing air in a horizontal manner in such a way that heavy particles are separated from light. Aspiration is the use of vertically flowing air that suspends the light particles in form of a column.
Materials such as dust masks, plastic containers, heavy boots and gloves may also be necessary in the process.
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