Chemical Pump Selection, Installation and Maintenance

Chemical pumps, as key equipment for material conveying in chemical production, operate based on different physical mechanisms. Among them, the most common type is the centrifugal pump, which relies on centrifugal force to transport materials.

1. Selection: Choosing the Right "Capable Assistant"

Selection is the crucial first step to ensure the efficient operation of chemical pumps. When selecting a pump, multiple factors need to be considered comprehensively.

Medium Characteristics: Different chemical media have distinct properties such as corrosiveness, viscosity, and density. For highly corrosive media like sulfuric acid and hydrochloric acid, pumps made of corrosion-resistant materials, such as fluorine-lined pumps and stainless steel pumps, should be chosen. For high-viscosity media, positive displacement pumps like screw pumps and rotary pumps may be more suitable.

Flow Rate and Head: These are also important considerations. The required flow rate and head should be accurately calculated according to actual production needs to ensure that the pump's performance meets the production requirements.

Other Parameters and Conditions: In addition, parameters such as the pump's working pressure, temperature, and cavitation allowance, as well as the installation environment and operating conditions, need to be taken into account. During the selection process, product samples and technical parameters provided by manufacturers can be referred to. Analysis and comparison should be carried out in combination with actual working conditions. If necessary, professional advice should be sought to ensure the selection of the most appropriate pump type.

2. Installation: Laying a "Solid Foundation"

Proper installation is the foundation for the stable operation of chemical pumps.

Pre-installation Inspection: Before installation, a comprehensive inspection of the pump and motor should be carried out to ensure that all parts are intact without any looseness or deformation.

Ensuring Levelness and Concentricity: During installation, the levelness and concentricity of the pump must be ensured, as they directly affect the running stability and service life of the pump. Tools such as spirit levels can be used to adjust the pump base so that the longitudinal and transverse levelness deviations are within the specified range. At the same time, the concentricity of the pump and motor should be ensured by adjusting the clearance and position of the coupling to align the centerlines of the two shafts, reducing vibration and noise caused by misalignment.

Pay Attention to Piping Connection: During the installation process, attention should also be paid to the connection of pipelines to ensure that there are no leaks and that no additional stress is applied to the pump body.

Trial Operation: After installation, a trial run should be carried out to check the running condition of the pump and promptly identify and solve any problems.

3. Maintenance: Extending the "Service Life"

Daily maintenance is essential for extending the service life of chemical pumps and ensuring their stable operation.

Regular Parameter Check: Regularly check the running parameters of the pump, such as flow rate, head, pressure, and current, and compare them with normal parameters. Once any abnormalities are found, the causes should be identified and dealt with promptly.

Inspection of Parts: The pump body, pipelines, valves, and other components should be inspected to check for leaks, wear, and loosening. If any problems are found, timely repair or replacement should be carried out.

Cleaning Work: Cleaning work should not be neglected. Keep the pump body and its surrounding environment clean to prevent foreign objects from entering the pump and affecting its normal operation.

Lubrication: Regular lubrication of the pump is necessary. Replace lubricating oil or grease according to the specified time and requirements to ensure good lubrication of all moving parts and reduce wear.

Sealing Inspection: Pay attention to the sealing condition of the pump and replace worn seals in a timely manner to prevent medium leakage. By doing a good job in daily maintenance, potential problems can be identified and solved in a timely manner, reducing the failure rate of the pump and extending its service life, thus providing a strong guarantee for the stable operation of chemical production.