In the production process of OSB (oriented strand board), the round sieve (Round Sieve) is the key equipment for screening and sorting wood shavings. Its function is to classify the shavings by size through screens of different apertures to ensure the uniformity and board quality of subsequent processes (such as directional paving). The following is a detailed description of the OSB round screen:
Main functions of circular screen
1. Size classification: Sort the shavings according to length, width and thickness, and remove overly large or undersized pieces.
2. Impurity filtration: remove dust, bark or other non-wood debris from wood chips.
3. Uniform paving: Ensure that the size of the shavings is consistent during directional paving, and improve the mechanical properties of the board (such as flexural strength).
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Structure and type of circular screen
1. Single layer circular screen
Structure: Single-layer rotating screen drum, screening is achieved through centrifugal force and gravity.
Purpose: Simple sorting, suitable for scenes where the size of the shavings is not required.
2. Vibration-assisted circular screen
Features: A vibration device is added to the rotation to prevent screen clogging and improve screening efficiency.
Applicable scenarios: screening of wood shavings with high humidity or prone to clumping.
Key parameters of screen design
1. Aperture size:
Outer screen: larger aperture (such as 3-5mm), used to separate coarse materials.
Inner screen: small aperture (such as 1-2mm), screening qualified shavings and fine chips.
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2. Material:
Wear-resistant metal (such as stainless steel) or polyurethane coating to extend service life.
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3. Tilt angle:
The inclination angle of the screen drum (usually 3-5°) affects the material residence time and screening efficiency.
Circular screen selection factors
1. Capacity requirements: Select the screen diameter and length (such as Φ1.5m×5m) according to the scale of the production line.
2. Characteristics of shavings: Wet shavings require an anti-clogging design, while dry shavings require a dust-proof device.
3. Screening accuracy: Multi-layer screens can improve the sorting accuracy, but the cost is higher.
4. Energy consumption and maintenance: The vibration-assisted type has high efficiency but slightly larger energy consumption, and the screen needs to be cleaned regularly.
Application suggestions
Paired with air flow separator: The combination of circular screen and air flow separator can further improve the separation effect of fine materials (such as dust).
Regular maintenance: Clean the screen after each shift and check screen wear and bearing status monthly.
Automated control: Integrated sensors monitor the screening effect in real time and automatically adjust the rotation speed or vibration parameters.
In the production process of OSB (oriented strand board), the round sieve (Round Sieve) is the key equipment for screening and sorting wood shavings. Its function is to classify the shavings by size through screens of different apertures to ensure the uniformity and board quality of subsequent processes (such as directional paving). The following is a detailed description of the OSB round screen:
Main functions of circular screen
1. Size classification: Sort the shavings according to length, width and thickness, and remove overly large or undersized pieces.
2. Impurity filtration: remove dust, bark or other non-wood debris from wood chips.
3. Uniform paving: Ensure that the size of the shavings is consistent during directional paving, and improve the mechanical properties of the board (such as flexural strength).
| | |
Structure and type of circular screen
1. Single layer circular screen
Structure: Single-layer rotating screen drum, screening is achieved through centrifugal force and gravity.
Purpose: Simple sorting, suitable for scenes where the size of the shavings is not required.
2. Vibration-assisted circular screen
Features: A vibration device is added to the rotation to prevent screen clogging and improve screening efficiency.
Applicable scenarios: screening of wood shavings with high humidity or prone to clumping.
Key parameters of screen design
1. Aperture size:
Outer screen: larger aperture (such as 3-5mm), used to separate coarse materials.
Inner screen: small aperture (such as 1-2mm), screening qualified shavings and fine chips.
| |
2. Material:
Wear-resistant metal (such as stainless steel) or polyurethane coating to extend service life.
| |
3. Tilt angle:
The inclination angle of the screen drum (usually 3-5°) affects the material residence time and screening efficiency.
Circular screen selection factors
1. Capacity requirements: Select the screen diameter and length (such as Φ1.5m×5m) according to the scale of the production line.
2. Characteristics of shavings: Wet shavings require an anti-clogging design, while dry shavings require a dust-proof device.
3. Screening accuracy: Multi-layer screens can improve the sorting accuracy, but the cost is higher.
4. Energy consumption and maintenance: The vibration-assisted type has high efficiency but slightly larger energy consumption, and the screen needs to be cleaned regularly.
Application suggestions
Paired with air flow separator: The combination of circular screen and air flow separator can further improve the separation effect of fine materials (such as dust).
Regular maintenance: Clean the screen after each shift and check screen wear and bearing status monthly.
Automated control: Integrated sensors monitor the screening effect in real time and automatically adjust the rotation speed or vibration parameters.
