Grain-cleaning separator БСХ-300 is designed for pre-cleaning and final cleaning of a grain heap of spikes (wheat, rye, oats, etc.), cereals and legumes, industrial and oilseeds from light, large and small, weed and grain impurities that differ in geometric dimensions and aerodynamic properties.
Grain-cleaning separator БСХ-300 is designed for pre-cleaning (elevator mode) and final cleaning (mill mode) of a grain heap of spikes (wheat, rye, oats, etc.), cereals and legumes, industrial and oilseeds from light, large and small trash and grain impurities that differ in geometric dimensions and aerodynamic properties separated by air flow and sieves in order to bring the content of impurities in the harvested grain to the indicators regulated by the Rules for conducting technological processes at elevators, mills, cereals, feed mills and other regulatory documents.
It has been produced since 2007 and successfully operated in Ukraine, the Russian Federation, the Republic of Serbia and the Czech Republic.
The separator is used as part of grain currents, in grain preparation departments at grain storage facilities, elevators, flour mills, malt farms, feedstuff mills, etc., including at explosive production facilities.
Separators are manufactured according to the 3rd category of State Standard (IEC 60721-2-1; IEC 60068-1) in climatic version "У" for the domestic market and export to countries with a temperate climate. At the same time separators must operate reliably in operating modes at temperatures from minus 10 to plus 40 °С with relative humidity 80% at an average annual temperature of plus 15 °С, atmospheric pressure from 650 to 800 mm Hg. (86.6 ÷ 106.7 kPa).
Specifications:
Parameter
БСХ-300
1. Technical productivity, t/h:
- pre-cleaning (elevator mode)
300
- final cleaning (mill mode) for wheat with moisture content up to 15% and trash content up to 3%
100
2. Efficiency of cleaning from weeds, %, not less:
- pre-cleaning
20
- final cleaning for wheat with moisture content up to 15% and trash content up to 3%
80
3. Installed power, kW, no more
7,0
4. Air consumption, m3/ h, no more:
36 000
- for pneumatic separation up to the separator
18 000
- for pneumatic separation after the separator
18 000
5. The frequency of circular vibrations of the sieve body, С-1 (q-ty / min)
5,0 (300)
6. Circular vibrations' radius of the body, mm, no more
12 ± 2
7. Overall dimensions, mm, no more, separator (without cyclone):
- length
3 100
- width
3 124
- height
2 720
8. Sieve area (undersowing / receiving), m2
24 (12 / 12)
9. Occupied area, m2, no more
10,00
10. Weight, kg, no more
6 200
11. Service life, years
8
Note.* The technical productivity indicated in line 1 refers to the purification of the feedstock - wheat with a bulk density of 760 kg/m3 and the content of impurities (seeds of weeds and cultivated plants):
for preliminary cleaning up to 15% at humidity up to 20%;
for secondary cleaning with a trash content of up to 3% at a moisture content of up to 15%.
With an increase in the above norms of contamination and moisture content of the starting material, the technical performance of the separators decreases by 2% for each percentage increase in contamination and by 5% for each percentage increase in moisture.
For cleaning crops other than wheat, productivity is reduced as follows:
for rye and corn - up to 90%;
for rye and corn - up to 90%;
for buckwheat and oats - up to 70%;
for sunflower - up to 50% of the nominal.
Design and operation:
Grain cleaning separator БСХ-300 (Drawing 1) consists of the following units: frame (1), body (2) with mesh frames (3), drive (4), balancer frame (5) with a balancing mechanism.
The body is suspended from the frame on flexible suspensions. The grating frames are inserted into the body along the guides fixed on the sidewalls of the body and fixed motionlessly with screws. The sieve frames are fitted with sieves, riveted to separate frames. The sieve frames are divided by longitudinal and transverse partitions into cells, in which rubber balls are placed, designed to clean the sieves from stuck particles.
The separator body is driven from an electric motor by a V-belt transmission. The drive motor is mounted on the front body member bracket. The belts are tensioned by moving the sub-engine plate along the studs. Initially, the grain heap comes from the gravity feed to the feeder, where it is distributed over the entire width of the machine and is pre-cleaned from light impurities by an air flow.
There is an inlet pipe (Drawing 4) on the top in front of body, this pipe serves to supply the sorted product from the feeder to the body. The product enters the distributor through the inlet pipe, where it is divided into 3 equal parts and enters the body section. The separator body makes circular movements, under their influence the product moves along the sieve and is sorted. Large impurities are removed from the separator through trays 3 (Drawing 4), and a mixture of grain with small impurities passing through a sorting sieve (angle 70) enters the lower sieve frame.
After have been waking up through the undersowing sieve (angle 80) small impurities fall on the bottom of the separator and then through the 4 tray are removed from the machine. The grain has been cleaned on sieves from large and small impurities enters the inlet of the pneumatic channel. In the pneumatic channel of the separator the grain is blown again by the air flow of the second circuit thereby further cleaning from the remaining light impurities. The volume of air in the flows of the primary and secondary circuits is regulated by a slide gate 8.
The recommended installation diagram of a separator complete with aspiration equipment it showed in Drawing:
Separators can operate in an elevator (pre-cleaning product), as well as in a mill (final cleaning) modes, depending on the types of sieves used.
To clean the grain from impurities that differ from it in size, sieves with round, elongated or triangular holes corresponding to the shape and size of the main crop grain and trash impurities can be used in the separator.
Distinctive features of БСХ-300 from analogs according to the technological scheme are:
Optimum ratio of tray mesh and sieve cleaner (rubber ball) for more efficient cleaning of sieves from trapped particles.
There is possibility of quick replacement of sieves without removing the trays with cleaners from the machine.
There are viewing windows on the sidewalls of the feeders for visual control of the process of loading and cleaning grain material.
There are quick-release hatches on the sidewalls of the separator body for access when cleaning and maintaining the machine.
Increased machine maintainability due to open access to all bearing assemblies.
There is the design of the pneumatic channel - during the movement along the channel, the grain is poured along 6 inclined planes and in the process of pouring it is blown by a side air flow, which gives the best quality of cleaning from small impurities.
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