What are the usage precautions for the blowing positive pressure specific gravity separator

Precautions for the Use of the Blowing Positive pressure Specific Gravity separator

The blowing positive pressure specific gravity separator takes advantage of the difference in specific gravity of materials. With the help of positive pressure airflow, materials of different specific gravities are stratified in a suspended state, thus achieving separation and selection. It is widely used in industries such as grain, seeds, and chemicals. The following are the key precautions during the usage process:

I. Equipment Installation and Commissioning

Installation environment

Site requirements: It should be installed on a dry, well-ventilated, flat and solid site to prevent the equipment from shifting or tilting due to vibration during operation. For instance, it should not be installed on soft soil or ground with obvious slopes, otherwise it may cause unstable operation of the equipment and affect the selection effect.

Space reservation: Sufficient space should be reserved around to facilitate the operation, maintenance and repair of the equipment. It is generally recommended that at least 1 to 1.5 meters of operating space be reserved in front of, behind, to the left and to the right of the equipment, so that personnel can freely enter and exit for daily inspection and maintenance work.

Equipment debugging

Air volume regulation: Adjust the air volume of the fan reasonably based on the specific gravity, particle size and processing capacity of the material. The air volume is too small, and the material cannot be fully suspended, resulting in poor stratification effect. Excessive air volume may cause some qualified materials to be carried away when light impurities are blown out. For instance, when selecting wheat, the optimal air volume can be determined by gradually adjusting the fan damper and observing the suspension state of the material in the selection chamber.

Vibration frequency and amplitude: Adjust the frequency and amplitude of the vibration motor to ensure that the material is evenly distributed on the screen surface and smoothly conveyed forward. Excessive or insufficient vibration frequency and amplitude will affect the selection effect and the service life of the equipment. Generally speaking, the vibration parameters can be adjusted by conducting a trial run to observe the movement of the materials on the screen surface, such as whether the materials are piled up or whether there are uneven jumping phenomena.

Ii. Material Preparation and Feed Control

Material pretreatment

Impurity removal: Before feeding, the materials should be preliminarily cleaned to remove large impurities, stones, metals, etc., to prevent these impurities from entering the equipment and damaging components such as the screen and fan. For instance, when carefully selecting seeds, a cleaning sieve can be used to remove impurities such as straw and soil lumps from them.

Moisture control: The moisture content of the materials has a significant impact on the selection effect. If the moisture content is too high, the materials are prone to sticking together, which will affect stratification. If the moisture content is too low, it may produce excessive dust. Generally speaking, different materials have their suitable moisture content ranges. For instance, the moisture content of wheat should be controlled between 12% and 14%.

Feeding speed

Uniform feeding: Maintain a uniform and stable feeding speed, avoiding sudden changes in speed. If the feeding speed is too fast, the materials will accumulate in the selection chamber and cannot be fully stratified. A too slow feeding speed will reduce the processing efficiency of the equipment. Uniform feeding can be achieved by installing feeding adjustment devices, such as screw feeders or vibrating feeders, and reasonably adjusting their rotational speeds or amplitudes.

Iii. Monitoring of the Operation Process

Observe the operating status

Material stratification situation: During the operation of the equipment, it is necessary to closely observe the stratification situation of the materials in the selection chamber. Under normal circumstances, materials of different specific gravities should be clearly stratified, with light impurities on the upper layer, qualified materials in the middle layer, and heavy impurities at the lower layer. If it is found that the stratification is not obvious or abnormal conditions occur, such as material mixing or material leakage, the machine should be stopped immediately for inspection.

Equipment vibration and noise: Pay attention to the vibration and noise conditions of the equipment. Normal equipment operation should be smooth with low noise. If abnormal vibration or increased noise occurs, it may be due to loose, worn or damaged equipment components. The machine should be stopped immediately to identify the cause and take appropriate measures.

Temperature monitoring

Motor temperature: Regularly check the temperature of components such as the motor and fan to prevent damage due to overheating. Infrared thermometers and other tools can be used for measurement. Generally, the temperature of the motor should not exceed its rated temperature. If the temperature is found to be too high, it is necessary to check whether the cooling system is normal, such as whether the fan is running and whether the heat sink is clogged, and take timely measures to cool it down.

Iv. Equipment Maintenance and Upkeep

Daily cleaning

Clean the screen: After each use, it is necessary to clean the impurities and residual materials on the screen in time to prevent it from getting clogged. Tools such as brushes and compressed air can be used for cleaning. If the screen is damaged or severely clogged, it should be replaced in time.

Clean the selection room: Regularly clean the accumulated dust and debris in the selection room to keep the interior of the equipment clean. Excessive dust accumulation not only affects the normal operation of equipment but may also cause safety hazards such as fires.

Regular inspection and maintenance

Component inspection: Regularly inspect all components of the equipment, such as bearings, belts, chains, etc., to ensure their normal operation. Check whether the bearings are short of oil or worn, whether the belts are loose or broken, and whether the chains are taut properly, etc. Components that are severely worn should be replaced in a timely manner.

Lubrication and maintenance: In accordance with the requirements of the equipment manual, regularly lubricate and maintain the moving parts of the equipment. For instance, bearings should be regularly lubricated with grease, and belts and chains should be regularly coated with lubricating oil to reduce wear and extend the service life of the equipment.

V. Safe Operation

Operator training

Safety knowledge learning: Operators should undergo professional training and be familiar with the operation procedures and safety precautions of the equipment. Untrained personnel are not allowed to operate the equipment without authorization. The training content should cover aspects such as the structure, performance, operation methods, maintenance and emergency handling of the equipment.

Safety awareness cultivation: Enhance the safety awareness of operators to ensure they strictly abide by safety regulations during operation. For instance, during the operation of the equipment, it is strictly prohibited to open the protective cover of the equipment at will or reach into the interior of the equipment to avoid danger.

Safety protection measures

Protective devices: The equipment should be equipped with complete safety protection devices, such as protective covers and guardrails, to prevent operators from coming into contact with moving parts. At the same time, it is necessary to ensure that the safety protection devices are intact and undamaged. They must not be removed or damaged at will.

Electrical safety: The electrical system of the equipment should comply with safety standards and be well grounded. During the usage process, operators should pay attention to preventing electric shock accidents. For instance, do not touch electrical equipment with wet hands. When repairing electrical equipment, the power supply should be cut off first.