BSH-300

Screen grain cleaner and separator BSH-300 is designed both for pre-cleaning (receiving cleaning process) and main cleaning (industrial cleaning process) of heap of chaff and grain (wheat, rye, oat etc.), groats and legumes, industrial and oil crops from light, coarse and fine impurities, foreign grain and foreign matters that are differ by geometrical dimensions and aerodynamic qualities, and are separable by air flow and screens. The aim of such operations lies in reduction of impurities content in stocked seeds in accordance with criteria specified by Regulations for technological processes at the grain elevators, flour mills, groats mills, and compound feed mills and by other normative documents.

PARAMETER TITLE

Value

1.* Technical capacity, tons per hour:

pre-cleaning (receiving cleaning process);

main cleaning (industrial cleaning process) for wheat with moisture content max. 15% and foreign impurities content max. 3%


300


100

2. Efficiency of cleaning from foreign impurities, %, min.:

- pre-cleaning;

- main cleaning for wheat with moisture content max. 15% and foreign impurities content max. 3%


20


80


Cleaning/screening machine BSH-300 (separator for partially hulled seeds control) has been produced since 2007. Grain cleaners and separators BSH-300 are successfully operated in Ukraine, Russia, Serbia and Czech Republic.


Product designation


Screen grain cleaner and separator BSH-300 is designed both for pre-cleaning (receiving cleaning process) and main cleaning (industrial cleaning process) of heap of chaff and grain (wheat, rye, oat etc.), groats and legumes, industrial and oil crops from light, coarse and fine impurities, foreign grain and foreign matters that are differ by geometrical dimensions and aerodynamic qualities, and are separable by air flow and screens. The aim of such operations lies in reduction of impurities content in stocked seeds in accordance with criteria specified by Regulations for technological processes at the grain elevators, flour mills, groats mills, and compound feed mills and by other normative documents. 


The machine is operated within grain storages, in seeds preparation blocks of silos, grain elevators, at flour milling plants, malt houses, compound feed mills etc., as well as at explosion-hazardous production facilities. 


BSH-300 is produced in accordance with third category of GOST-15150 (IEC 60721-2-1; IEC 60068-1), climate version U for internal market and export to temperate countries. However, separators have to work reliably in operating regimes at a temperature from 10 () degrees below zero to 40 () degrees above zero, relative moisture 80% with average annual temperature of 15 () degrees above zero, atmospheric pressure from 650 to 800 mm Hg (86,6÷106,7 kPa).


The machine is able to start and to work properly with temperature from 30 () degrees below zero when applying special greases. 

 

In contrast to universal separator BSH-200 which provides an opportunity for its optimal set up to cleaning both the smallest grass seeds and large legumes due to regulation of screen frames angle, BSH-300 is a reliable workhorse for large capacity oriented enterprises with narrow focus (in terms of seeds types).



Specifications 

PARAMETER TITLE

Value

1.* Technical capacity, tons per hour:

pre-cleaning (receiving cleaning process);

main cleaning (industrial cleaning process) for wheat with moisture content max. 15% and foreign impurities content max. 3%


300


100

2. Efficiency of cleaning from foreign impurities, %, min.:

- pre-cleaning;

- main cleaning for wheat with moisture content max. 15% and foreign impurities content max. 3%


20


80

3. Rated capacity kW, max.

7,0

4. Air consumption m3/hr, max.:

- for aspiration before separator

- for aspiration after separator

36000

18000

18000

5. Circular vibrations frequency of screens body frame -1 (vibrations per minute)

5,0(300)


6. Body frame circular vibrations radius mm, max.

122

7. Overall dimensions of separator (without cyclone) mm, max.:

length

width

height


3100

3124

2720

8. Screens area (lower (main) screens/upper (preliminary) screens) m2

Screens quantity (lower (main) screens/upper (preliminary) screens) pcs.

24 (12/12)

24 (12/12)

9. Required space, m2, max.

10,00

10. Weight kg, max.

6200

11. Service life, years

8

Notes* Technical capacity specified on line 1 is referred to the cleaning of feedstock wheat with volume weight 760 kg/m3 and impurities content (seeds of weed and cultivated plants):

- for pre-cleaning up to 15% with moisture max. 20%;

- for main cleaning under foreign impurities content max. 3% with moisture content max. 15%.


With increasing of above mentioned norms of impurity and raw material moisture, separator technical capacity reduces by 2% for every percent of impurity increase and by 5% for every percent of gain in moisture. 


For cleaning of other plants, different from wheat, the capacity reduces in the following way:

- for rye and corn by 90%;

- for panic grass and barley by 80%;

- for buckwheat and oat by 70%;

- for sunflower by 50% of rated.


Distinguishing features of BSH-300 from the analogues in accordance with technological process


- Balance between collecting tray mesh size and size of screen cleaners (screen cleaning rubber balls) for more effective cleaning of screens from trapped debris.


- Replaceability of screens without deinstallation of collecting trays with screen cleaners.


- Inspection windows at the side frames of feeders for visual monitoring of grain intake and cleaning.


- Quick-detachable access doors at the separators body side frames for easy cleaning and servicing of the machine.


- Advanced repairability due to easy accessible bearing blocks.


Structure and Functioning


Screen grain cleaner and separator BSH-300 (pic.1) consists of the following parts: frame 1, body 2 with screen frames 3, drive 4, balancer frames 5 with balancing mechanism. 


The body is suspended to the frame by flexible suspensions.


Screen frames are installed in the body by slideway railings (fixed on body side frames) and fixed rigidly by screws. Screens are installed on screen frames and fixed to separate frameworks by clinchers.

 

Screen frames are divided into meshes by long and cross baffles, where special rubber balls for cleaning of screens from trapped debris are placed.


Bodys drive is accomplished by electric motor via V-belt transmission. Drive motor is installed at the bracket of bodys front girder. Belts tension is accomplished by slide plate motion along stud bolts.


Initially heap of chaff and grain comes from gravity flow duct to feeder, where it is distributed over the entire width of the machine and preliminary cleaned by air flow from light impurities. 


On top, at the body front part, inlet nozzle is placed (pic.4). It serves for supply of sort product from feeder to the body. Through inlet nozzle product comes to distributing canal, where it is separated into 3 equal parts and falls to the body section.


The machines body circulates that impacts the product to shift over the screen followed by assortment.


Coarse impurities derive from the separator through chutes 3 (pic.4), mixture of grain with fine impurities through sizing screen (angle 70) flows to lower screen frame.


Fine impurities through lower screen (angle 80) fall to separator bottom and through chute 4 derive from the machine. 


Grain cleaned on screens from coarse and fine impurities flows to inlet nozzle of aspiration channel. In the aspiration channel grain is additionally blown by air flow from bypass air duct and additionally cleaned up from residual light impurities. Air volume in flows from primary and bypass air ducts is regulated by gate valve 8


Recommended installation diagram of separator in set with aspiration equipment is shown on pic.6.


The machine is able to operate on receiving cleaning process (pre-cleaning) and industrial cleaning process (main cleaning) depending on screens types. 


To clean the grain from impurities that differ by dimensions different screens, corresponding to shape and size of dominant crops and foreign impurities, can be applied: with circular, elongated and triangle holes.


Attention! Screens selection is carried out by the consumer at worksite depending on feedstock and its characteristics (moisture, impurities content, grain particle size etc.) for the purpose of obtaining the required cleaning standard. 


Distinguishing features of BSH-300 from the analogues in accordance with technological process


- Balance between collecting tray mesh size and size of screen cleaners (screen cleaning rubber balls) for more effective cleaning of screens from trapped debris.


- Replaceability of screens without deinstallation of collecting trays with screen cleaners.


- Inspection windows at the side frames of feeders for visual monitoring of grain intake and cleaning.


- Quick-detachable access doors at the separators body side frames for easy cleaning and servicing of the machine.


- Advanced repairability due to easy accessible bearing blocks.



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