BGS type Variable inclination equal thickness roller screen
key word：Heat exchange element
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Product description
BGS series variable inclination constant thickness roller screen
1. Introduction
1.1. Purpose
Roller screen is a screening equipment in coal handling system of thermal power plant. After screening, the coal smaller than the screen hole falls into the equipment under the screen, and the coal larger than the box hole moves forward on the screen surface and is sent to the coal crusher.
1.2. Model meaning
BGSP**X##
BGS -------- variable inclination constant thickness roller screen
P -------- with bypass
* -------- number of sieve shafts
#---------Screen width (mm)
1.3. Structural features
1.3.1. The inclined angle of the screen surface at the feed inlet section is large, so that the materials can pass quickly, and the blocking and blocking phenomenon caused by the accumulation of materials at the feed inlet are eliminated.
1.3.2. In the process of material flow, the change speed of the screen surface angle gradually slows down. At the same time, the material is gradually screened and divided on each section of the screen surface to form an approximate equal thickness screening.
1.3.3. As the inclination angle of the screen surface is increased, the material flow speed is accelerated, so the screening capacity per unit area of the screen surface is increased and the screening capacity is improved.
1.3.4. The sweeper can be installed according to the moisture content of coal to clean the sticky coal on the screen shaft when the moisture content of materials is too large.
1.3.5. Fully enclosed shell is adopted, with less dust.
1.3.6. The transmission system is simple, safe, reliable and easy to repair and maintain. Due to the use of single shaft drive, the noise is small, it is convenient for electrical control, it can start in sequence with load, and the single shaft locked rotor can display and alarm.
1.4. Working principle
According to the principle of equal thickness screening, a new type of screen surface structure design is adopted for the variable inclined angle equal thickness roller screen, that is, the sectional screen surface is composed of several screen shafts, and the inclination angle of each section of screen surface along the material flow direction is from large to small, forming a variable angle sectional screen surface. The materials entering the screen machine are quickly separated at the large angle screen surface section, and then flow to the secondary angle and small angle screen surface and fully separated. The material smaller than the mesh is sieved, and the bulk material is discharged to the outlet. In the BGS type variable inclination constant thickness roller screen, the inclination angle of the screen surface decreases from the feed inlet to 25 ° to 5 ". The type with bypass is operated by electric push rod.
1.5. Product series
BGS series products are shown in table 38-1.
Table 38-1 BGS series products
| Model | BGSPn×10 | BGSPn×12 | BGSPn×14 | BGSPn×16 | BGSPn×18 | BGSPn×20 |
| Capacity（t/h） | 300～600 | 800 | 1000 | 1250 | 1500 | 1800 |
| Screen width（mm） | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 |
Note: the number of sieve shafts "n" is determined according to the screening efficiency, so it is not fixed. Generally, the number of sieve shafts is between 6 and 15
2. Main technical parameters
Taking bgsp12 × 18 as an example, the main technical parameters are shown in table 38-2
Table 38-2 main technical parameters of bgsp12 × 18 variable angle equal thickness roller screen
| Capacity（t/h） | 1500 | Screen efficiency（%） | 90 | |
| Screen width（mm） | 1800 | |||
| No. of screen shaft | 12 | Motor model | M112MB4(FLENDER) | |
| Inclination angle of screen surface（。） | 5°、15°、25° | Motor power（KW） | 4 | |
| Feed size（mm） | ≤300 | Electric actuator/power（KW） | DTⅡA100045M/1.1 | |
| discharge size（mm） | ≤30 | General power（KW） | 49.1 |
3. Equipment appearance and structural dimensions
Taking bgsp12 × 18 as an example, the equipment outline and structural dimensions are shown in figure 38-1, and the equipment outline dimensions are shown in table 38-3
Table 38-3 equipment dimensions
| Model | L×W×H（m×m×m） | Model | L×W×H（m×m×m） |
| BGSP6×10 | 2.78×2.26×1.72 | ||
| BGSP9×12 | 3.48×2.29×1.98 | BGSP12×16 | 4.8×2.9×2.5 |
| BGSP10×14 | 3.81×2.67×2.03 | BGSP12×18 | 4.8×3.1×2.5 |
| BGSP12×14 | 4.73×2.77×2.23 | BGSP12×20 | 4.8×3.3×2.5 |
4. Scope of supply
4.1. Scope of equipment supply
Main engine (including driving device), bypass system, electric control box, etc.
4.2. Order requirements
Indicate the material type, moisture, production capacity, screen surface width, screen shaft number and other parameters, and sign the technical agreement.
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