Dust conveying Roots blower is a widely used equipment in industrial production, especially in scenarios where dust or granular materials need to be conveyed. The following is a detailed introduction to the Roots blower for dust transportation:
1、 Working principle
The working principle of the dust conveying Roots blower is similar to that of a gear pump, where each rotor is equivalent to a gear with only two teeth. Each concave curved surface on the rotor forms a working volume with the inner wall of the cylinder. During the rotation of the rotor, gas is taken away from the suction port. When it is moved to the vicinity of the exhaust port and connected to the exhaust port, the pressure in the working volume suddenly increases due to the reflux of high-pressure gas, thereby transporting the gas (including dust) to the exhaust channel. The two rotors are not in contact with each other and are sealed by tightly controlled gaps, so the discharged gas is not contaminated by lubricating oil.
2、 Main features
1. Energy saving: Roots blower delivers much higher concentration than centrifugal blower and consumes relatively less energy.
2. Long conveying distance: Roots blowers can achieve long-distance conveying while requiring less installation space.
3. Material protection: During the transportation process, materials are not easily affected by moisture, dirt, or impurities, and can also reduce dust and improve environmental hygiene.
4. Flexible arrangement: The flexible arrangement of conveying pipelines helps to rationalize the configuration of factory equipment.
5. Automated control: It can achieve automated control and reduce management costs.
3、 Main parameters
The main parameters of the dust conveying Roots blower include air volume, pressure, power, efficiency, and speed
1. Airflow: Refers to the amount of gas transported by a Roots blower per unit time, usually expressed in cubic meters per hour (m3/h).
2. Pressure: refers to the wind pressure generated by a Roots blower, usually expressed in kilopascals (kPa).
3. Power: Refers to the power consumption of a Roots blower, usually expressed in kilowatts (kW).
4. Efficiency: Refers to the energy conversion efficiency of a Roots blower, usually expressed as a percentage.
5. Rotational speed: refers to the rotational speed of the impeller of a Roots blower, usually expressed in revolutions per minute (rpm).
4、 Application Fields
Dust conveying Roots blowers are widely used in multiple fields, including but not limited to:
1. Mining and metallurgical industry: used for transporting dust and particulate matter, promoting the circulation of oxygen in the furnace.
2. Chemical industry: used for manufacturing various chemical raw materials and intermediates, such as ammonia, sulfuric acid, sodium hydroxide, etc.
3. Food and medicine industry: It is used to transport and fill all kinds of powdery and granular materials, such as Rice noodles, glucose, tablets, etc.
4. Environmental protection field: used for dust removal, desulfurization, denitrification, etc., to reduce environmental pollution.
5. Paper and printing industry: used for conveying materials such as pulp and printing ink.
5、 Selection precautions
When choosing a dust conveying Roots blower, the following factors need to be considered:
1. The properties of the conveyed material include particle size, density, temperature, etc., to ensure that the fan can adapt to the conveying requirements of the material.
2. Conveying distance and height: Determine the conveying capacity and pressure level of the fan according to actual needs.
3. System configuration: Consider the configuration of the entire pneumatic conveying system, including the compatibility of pipelines, valves, dust collectors, and other equipment.
4. Maintenance and upkeep: Choose fan models that are easy to maintain and upkeep to reduce operating costs.
6、 Usage and maintenance
1. Pre use inspection: Check whether the air filter at the inlet is unobstructed, whether the pipes, valves, etc. are stable, and whether the lubricating oil is in good condition.
2. No load operation: Before starting the fan, it should be operated without load first and observed for any abnormal phenomena.
3. Load startup: After the no-load operation is normal, start the load startup and gradually adjust the outlet valve to the rated pressure.
4. Regular maintenance: Regularly maintain the fan, including cleaning the filter, replacing lubricating oil, etc.
In summary, the Roots blower for dust transportation has many advantages and a wide range of application fields. In the process of use and maintenance, it should be strictly carried out in accordance with the usage requirements and operating specifications to ensure its stable and smooth operation.
