Screen grain cleaner and separator BSH-12 (cleaning/screening machine) is designed for cleaning of grain (wheat, rye, oat etc.) from foreign matters (impurities) that are differ by geometrical dimensions and aerodynamic qualities.
The machine is operated within grain storages, at flour milling plants and groats mills.
Cleaning/screening
machines BSH-3, BSH-6, BSH-12, BSH-16, BSH-100 (referred to below as
separators) are designed for cleaning of grain (wheat, rye, oat etc.) from foreign
matters (impurities) that are differ by geometrical dimensions and aerodynamic
qualities. The machine is operated within grain storages, at flour milling
plants and groats mills.
Separators are
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 (°Ñ)
degrees below zero to 40 (°Ñ) degrees above zero, relative moisture 80% with average annual
temperature of 15 (°Ñ)
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 (°Ñ) degrees below zero when applying special greases.
Specifications
Parameter title | Value | ||||
BSH-3 |
BSH-6 |
BSH-12 |
BSH-16 |
BSH-100 |
|
Technical capacity, tons per hour: (for wheat with moisture content max. 15% and foreign impurities content max. 3%):
pre-cleaning (receiving cleaning process) |
12 |
25 |
40 |
50 |
80 |
main cleaning (industrial
cleaning process) |
3 |
6 |
12 |
16 |
24 |
Efficiency of cleaning from foreign impurities, %, min. (for wheat with moisture content max. 15% and foreign impurities content max. 3%):
pre-cleaning |
20 |
20 |
20 |
20 |
20 |
main cleaning |
80 |
75 |
80 |
75 |
80 |
Rated capacity
kW,
max. |
0,75 |
0,75 |
1,1 |
1,1 |
1,5 |
Air consumption m3/hr,
max.:
|
600 |
4000 |
4000 |
8200 |
8500 |
for aspiration
for
body frame aspiration |
- 600 |
3400 600 |
3400 600 |
7000 1200 |
7300 1200 |
Circular vibrations frequency
of screens body frame Ñ-1 |
5,4 |
5,4 |
5,4 |
5,4 |
6,25 |
or vibrations
per minute |
(325) |
(325) |
(325) |
(325) |
(375) |
Body circular
vibrations diameter mm, max. |
18±1 |
18±1 |
18±1 |
18±1 |
20±1 |
Overall dimensions of separator (without cyclone) mm, max.: length width height
|
1530 1185 1440 |
1900 1485 2104 |
2457 1485 2154 |
1900 2772 2104 |
2457 2772 2154 |
Required
space, m2, max. |
1,6 |
2,5 |
3,2 |
4,7 |
6,0 |
Weight
kg, max. |
590 |
815 |
1015 |
1450 |
1583 |
Service
life, years |
8 |
8 |
8 |
8 |
8 |
* 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 12% of rated.
Separator technical capacity reduces with increasing of grain moisture and impurities content, for example:
with moisture 15-18% goes down to 65-70%;
with moisture 18-22% goes down to 55-60%;
with moisture above 22% goes down to 50% of rated.
Content of delivery. Separators are provided pre-assembled.
Identification |
Title |
Quantity per one separator |
Notice |
||||
BSH-3 |
BSH- 6 |
BSH-12 |
BSH-16 |
BSH-100 |
|||
BSH- 3.00.000. |
Separator |
1 |
- |
- |
- |
- |
|
BSH-6.00.000. |
Separator |
- |
1 |
- |
- |
- |
|
BSH-12.00.000. |
Separator |
- |
- |
1 |
- |
- |
|
BSH-16.00.000. |
Separator |
- |
- |
- |
1 |
- |
|
BSH-100.00.000. |
Separator |
- |
- |
- |
- |
1 |
|
BSH-6.00.120. |
Collector |
- |
1 |
- |
2 |
- |
Optionally |
BSH-100.00.120 |
Collector |
- |
- |
1 |
- |
2 |
|
BSH-6.08.000. |
Aspiration channel (AC) |
- |
1 |
- |
- |
- |
|
BSH-6.08.000-01 |
Aspiration channel (AC) |
- |
- |
- |
2 |
- |
|
BSH-100.08.000. |
Aspiration channel (AC) |
- |
- |
1 |
- |
2 |
|
UOV-1.00.000. |
Air treatment unit |
- |
1 |
- |
- |
- |
Optionally |
UOV-1.00.000-01. |
Air treatment unit |
- |
- |
1 |
2 |
2 |
|
BSH-6.00.160. |
Distributor |
- |
1 |
1 |
2 |
2 |
|
BSH-6.12.030 |
Aspiration Y-branch fitting |
- |
1 |
- |
- |
- |
|
BSH-16.12.030 |
Aspiration Y-branch fitting |
- |
- |
- |
2 |
- |
|
BSH-100.12.030 |
Aspiration Y-branch fitting |
- |
- |
1 |
- |
2 |
|
BSH-6.00.013 |
Plate for AC fixing to separator |
- |
2 |
- |
- |
- |
|
-01 |
Plate for AC fixing to separator |
- |
- |
2 |
- |
- |
|
BSH-100.00.013 |
Plate for AC fixing to separator |
- |
- |
- |
- |
2 |
|
-01 |
Plate for AC fixing to separator |
- |
- |
- |
2 |
- |
|
BSH-3.11.000 |
Shim plates kit |
1 |
1 |
1 |
1 |
1 |
|
BSH.RE |
Operations manual |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
|
INSTRUMENTS |
|||||||
BSH-3.08.000 |
Special key |
1 |
1 |
1 |
1 |
1 |
|
QUICKWEARING SPARE PARTS |
|||||||
|
Frames kit |
2 |
2 |
4 |
4 |
8 |
Optionally |
|
Suspensions kit |
4 |
4 |
8 |
8 |
8 |
|
|
Balls kit |
72 |
10 |
18 |
21 |
36 |
|
BSH-3.00.036-À |
Glass |
1 |
2 |
2 |
4 |
4 |
|
BSH-3.00.040 |
Sleeve filter |
1 |
2 |
- |
4 |
- |
|
BSH-3.00.040-02 |
Sleeve filter |
- |
- |
2 |
- |
4 |
|
BSH-3.00.090 |
Sleeve filter |
1 |
1 |
- |
2 |
- |
|
BSH-3.00.090-01 |
Sleeve filter |
- |
- |
1 |
- |
2 |
|
BSH-3.00.080 |
Sleeve filter |
1 |
- |
- |
- |
- |
* On customer’s order separators BSH-100, BSH-16, BSH-12 and BSH-6 can be supplied with aspiration chamber BSH-100.20.000 instead of aspiration channel in the same quantity, example at pic. 14.
Structure and Functioning
Screen grain cleaner
and separator BSH-3 consists of screen separator, and separators BSH-6, BSH-12,
BSH-16, BSH-100 consist of screen separator and aspiration channel with
support equipment: distributor, adapter and grain collector.
Separator (pic.4-4b) consists
of the following parts: frame 1, body 2 with screen frames 3, drive
4, traverse 5 with balancing mechanism. The body is suspended to the frame
by flexible suspensions. Suspensions are made of unidirectional fiber glass SSO-VP,
diameter 12 mm. in accordance with technical requirements TU 6-11-585-84. Other
materials are FORBIDDEN!
Screen
frames 4 are installed
in the body
(pic.10) by slideway
railings 9, fixed on
body side frames,
and fixed rigidly
by clamps 7. The adjustment of clamping mechanism is carried out in fully open
position so that clearance between clamp shim surface and upper frame plane would
be 3±0,5 mm. Clamps are shifted by special eccentric element – key, which is
included into content of delivery. With rotation of eccentric cartridges 3, vertical
displacement of rollers 5 and clamps 7, and, therefore, nip and release of
screen frames are occurred. In order to ensure simultaneous nip and release of
upper and lower frames, rollers on both sides of the body are connected by
levers 2. During screen frames release clamps 7 retreat on 3-4 mm. from screens
that provides frames dismantlement.
Frame
structure
is divided into
meshes by long
and cross baffles,
where special rubber
balls for cleaning
of screens from
trapped debris are
placed. Installation of screen frames along the body is
performed as follows (pic.11): loosen the screw nuts 2 and, by turning screw
nuts 1, shift screen frames by screw-bolts 4 in such a manner that upper screen
lies on the tray and lower screen on back lower connection for cleaned grain
removal. Next, screens position is fixed by screw nuts 2. ATTENTION! On BSH-12
and BSH-100 separators screen of the front frame must lie on the back frame
structure.
At the front wall of screen body electric motor with drive
pulley is installed, which through the V-belt transmission rotates the pulley 7
(pic. 12) with unbalanced weight fixed on it, which provides a circular motion
of the screen body. The
pulley rotates freely on the bearings 5, which are mounted on the axle 9 pressed
into the traverse 8. Bearings are closed with covers 4 and 6. Bearings greasing
is provided by gun through oil feeder 11, oil pipe 10, hole in the axle 9 and ring
3 for BSH-16 and BSH-100, and through oil feeder placed on pulley hub 7 for BSH-3,
BSH-6 and BSH-12.
From the top at the front side of the body nozzles 7
and 8 (pic. 4-4b) are arranged for supply of sorted product into the body. There
is also a distributing trough 9 for equal distribution of the product along the
width of screens. The frame consists of the front and back pillar, which are
connected together by side walls. At the front pillar nozzles for product
supply to separator are installed and equipped with inspection windows. Nozzle
for connection to aspiration network is fixed at the back pillar. In order to
prevent possible body impact on frame in the moments of start and stop, the
limiter 15 with a rubber bumper is fixed on the lower back of the frame
connection. For this purpose there are also two rubber limiters fixed on the
front pillar of the frame.
Aspiration channel serves for extraction of
light impurities from the product. It consists of the housing inside which movable
wall is installed. Handle rotation provides shifting of lower and upper parts
of the movable wall. Air consumption is regulated by throttle valve via hand lever.
Movable wall is made of transparent material (or with inspection window if the
wall is nontransparent) to observe separation process. Inlet box 19 with tray
is designed for uniform feed of product to aspiration channel. From above, on the
channel housing adapter 20 for connection to the air duct is installed. Collector
17 is installed under the duct for cleaned grain removal. Distributor 8 is
designed to divide the feedstock into two identical flows that ensures an equal
distribution of grain along the width of separator screens. Grain distribution is
provided by weighted slide valve. The uniformity of grain flow is regulated by
weight motion on stud bolt.
Operation concept of the separator is as follows.
Product through the inlet nozzle flows to the distributor 8, where it is
divided into two flows and transferred to the body section by nozzles 7. ATTENTION! To
avoid body misalignment in operation, it is necessary to ensure a constant
equal supply of grain to each flow. The machine’s body circulates that impacts
the product to shift over the screen followed
by assortment. An apron in the body reduces possibility of grain removal to rejects.
Coarse impurities are
removed from the separator through the trays 12, mixture of grain with fine and
light impurities is transferred to the lower screen frame through upper screen. Fine and light impurities that have spilled through lower screen, fall
to the bottom of separator, and are removed from the machine through the tray
13. Grain, cleaned on screens from coarse, fine and light impurities, enters to
the receiver of the aspiration channel, and then, using the tray,
uniform flow is supplied to the aspiration channel, where product is
intensively blown off by the air flow. Completely cleaned grain is removed from
the machine through the bottom collector 17. Air from the body and aspiration channel is transferred
through air ducts to the cyclone for cleaning from aspiration foreign matters
(impurities).
Recommended
installation diagrams of separators in set with aspiration equipment are shown
on pics. 7 and 7a. Separators can be applied both for pre-cleaning (receiving
cleaning process) and main cleaning (industrial cleaning process) depending on
screens type.
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. Recommended size and type of screens please
find in the table below. Capacity of the separator reduces with increasing of grain
moisture and impurities content.
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.
Recommended screens characteristics for cleaning of different crops
CROP |
Receiving cleaning process |
Industrial cleaning process |
||
Upper (preliminary) screen |
Lower (main) screen |
Upper (preliminary) screen |
Lower (main) screen |
|
Wheat |
Ø10÷8 |
1,7…2õ20(16) Ø2÷2,5 |
Ø7÷5 3…4õ20(16) |
1,7…2õ20(16) Ø2÷2,5 |
Rye |
Ø10÷8 |
1,7…2õ20 Ø2÷2,5 |
Ø7÷5 3…4õ20 |
1,7…2õ20 Ø2÷2,5 |
Barley |
Ø10÷8 |
2…2,4õ20 Ø2,5 |
Ø8÷4,5 4…4.5õ20 |
2…2,4õ20 Ø2,5 |
Oat |
Ø10÷8 |
1,7…2,2õ20 Ø2,5 |
Ø8÷6 3…4õ20 |
1,7…2,2õ20 Ø2,5 |
Rice |
Ø10÷8 |
Ø2,5÷3,5 |
Ø6,5÷5,5 2,8…3,6õ20 |
Ø2,5÷3,5 |
Buckwheat |
Ø8÷7 |
2…2,4õ20 Ø3÷3,6 |
Ø6÷5 |
2…2,4õ20 Ø3÷3,6 |
Panicgrass |
Ø8÷6 |
1,4…1,6õ20 |
Ø4÷3 2…2,2õ20 |
1,4…1,6õ20 |
Pea |
Ø10÷8 |
2,7…4õ20 Ø5÷5,5 |
Ø10÷8 |
2,7…4õ20 Ø5÷5,5 |
Sunflower |
Ø10÷8 |
1,7…3õ20 Ø3,5 |
Ø10÷6 |
1,7…3õ20 Ø3,5 |
Maize |
Ø12÷10 |
3…5õ20 Ø6÷5,5 |
Ø12÷10 |
3…5õ20 Ø6÷5,5 |
Notice 1. If necessary, the elongated holes can be replaced by round ones and in reverse, taking into account the following formula:
Â=(0,70…0,75)d,
with  – width of elongated hole; d – internal diameter.
Notice 2. To obtain the required cleaning standard and capacity screens selection is carried out by the consumer individually at worksite as dimensional characteristics of the same crop may differ depending on variety and growing area.