/ Blog/ Difference between ISM separators and sieve separators


The process of harvesting and further processing of grain is one of the key agricultural activities. Many farmers are puzzled over what to choose an aerodynamic separator, which cleans and calibrates grain using air by weight and shape, or a sieve separator, which selects grain by size.

Let’s first take a look at what a sieve separator is and why it is still used. There are a large number of sieve separators with different operating principles, but the main function of such an assembly is to select the source material by size. For example, confectionery seeds – for most agricultural enterprises that work with this crop, they just need to select the size to size and for this purpose the sieve separator is ideal. But if we take, in general, the tasks of sieve separators, the main purpose of which is primary and preliminary cleaning, the seed material cannot be prepared on such units. By purchasing such a unit, the farmer may encounter a number of inconveniences, namely, if good, healthy grain, but it is larger than the diameter of the holes, then it will end up in a marriage. Not a small cost of sieves for one type of crops, replacement of sieves (an experienced specialist changes them in one and a half, two hours, and in the season it really is a lot of time, when every minute is worth its weight in gold). And, of course, these are large dimensions, noise level and power consumption. It cannot be categorically answered that sieve grain cleaning machines are very inconvenient both in operation and in their functionality.

As for the ISM aerodynamic separators, it is absolutely without sieve technology.

The grain is divided into fractions in the air flow, due to its weight and windage. Thanks to the air method of cleaning and calibrating grain, ISM separators are able to isolate the seeds with the highest percentage of germination, that is, the seeds that have the greatest amount of vital components for growth.

Due to the presence of a frequency converter, the farmer will be able to more accurately adjust the ISM separator for any agricultural crop, depending on moisture and debris. And the indicator, which is located on the control panel, will help you to find out at what engine speed the grain cleaner has achieved perfect separation. The electronic indicator also serves to remember the settings for a particular culture and not to adjust the separator next time, while wasting precious time. Another significant advantage of the frequency converter is the reverse mode. What is Reverse Mode? The name speaks for itself. With the help of the switch, the ISM separator starts to work in the opposite direction and thereby clean the separator from debris or previous material. 3-5 minutes of operation and the separator is ready for operation again. Conveniently? I think very much, considering the factor that during the season this function is very necessary to save time. The presence of a frequency converter also made it possible to reduce the consumption of electricity on the ISM separators, since working on the machine we use only that power and that air flow that is necessary for the separation of a particular crop. In short, the heavier the raw material, the more power will be required and the higher the energy cost. Conversely, the lighter the crop, the less electricity the separator will consume.

Well, and perhaps not an unimportant factor in comparing two types of grain cleaning equipment: sieve type and aerodynamic, are dimensions and noise level. Aerodynamic separators ISM have relatively small dimensions and are also less noisy.

The main thing is that the ISM aerodynamic separators will be able to clean the grain and prepare the seed, and all other advantages are a pleasant bonus. After all, the farmer expects, first of all, high-quality grain cleaning and seed calibration from grain cleaning equipment.

See more
Difference between ISM separators from analogues.
Publication in “AgroLux” magazine