Across All Heavy Industries
Ventmeca is proud to offer a comprehensive program for repair, rebuilding, and upgrading of industrial fans across all heavy industries.
Replacements, Repairs and Improvements
Rotor Rebuilds and Repairs – Reconstructing to Original Condition
Replicating aerodynamic characteristics ensures existing fan performance is achieved
- Rotor Repairs: We provide factory repairs to existing wheel and shaft assemblies, fixing damaged and worn-out areas and replacing wear plates to restore them to a like-new condition. Often, the difference between a repair and a rebuild is cost. If the extent of the repair is significant, a rebuild is often more economical. Ventmeca will evaluate the condition of a worn or damaged fan rotor and detail the available options.
- Comprehensive Repair and Rebuild Services: Whether it is an original product from Ventmeca Fans or from another supplier, we offer a full range of repair and rebuild services, including
- Complete Reverse Engineering: We reverse engineer existing fan equipment to ensure design parameters are within acceptable limits and that critical components achieve the desired wear and fatigue life. This critical step is often missed by fabrication shops, which typically copy the existing design without improvements.
- Design Improvements for Increased Wear Resistance: When increased wear resistance is required, Ventmeca can enhance the existing design while maintaining the original aerodynamic characteristics, ensuring that fan performance is not impacted.
Materials
Ventmeca has the experience and know-how to select the right wear resistant materials for the application. With so many material options on the market, it is no longer a case of good, better, and best. Certain products work better in certain applications than others.
Impeller Fatigue Life
Impeller fatigue life has become an increasing necessity with process fans as users move away from damper controls to VFD’s for power savings in processes that have repetitive changes in fan performance.
Ventmeca can provide a fatigue analysis to determine the fatigue life of existing equipment based on fan speed cycling, and engineer a solution to increase that fatigue life and reliability
Performance Testing
Ventmeca recommends the performance testing of large process fans when a rebuild or spare is required to confirm the fan is as efficient as it should be, confirm if it is under performing, or determine if aerodynamic changes to the impeller could improve wear life or reduce build up.
Welding
Welding to CWB / AWS and Quality Assurance to internationally recognized standards
In house dynamic balancing up to 50,000 lbs to the lowest tolerances
Rotor Upgrades
Engineered solutions for increased efficiency, more performance and increased wear life by updating the impeller design in the existing housing.
- Ventmeca offers engineered solutions to upgrade existing fans, utilizing components such as fan housings, bearings, motors, and foundations to streamline installation and reduce capital costs. Our Upgrade services include
- Performance Testing: We conduct thorough performance testing to determine requirements, efficiency, and potential power savings.
- Site Visits: Our experts visit your site to gain insights into the entire system and identify any aerodynamic factors influencing fan efficiency, wear life, and areas of wear.
- On-site Inspection: We inspect fan components on-site to identify items suitable for reuse in the upgrade process.
- 3-D Modeling: We utilize advanced 3-D modeling techniques to design the new Upgrade rotor within the existing fan housing, ensuring seamless integration
- Scale Model Testing: Our in-house test lab offers scale model testing of the new rotor within the existing housing, with or without modifications. This ensures that predicted performance is achieved, minimizing the risk of underperformance and associated costs such as lost production or reduced efficiency.
Fan Performance
A new fans performance rating is specified by the buyer /engineer. This often contains a margin for upset conditions and even increased capacity for future production increases.
This fan curve to the left was selected for this rating and peak efficiency. It is only the actual system resistance that determines where the fan operates, hence it’s actual efficiency. Even if a fan was selected for the actual original system resistance, over time, continuous improvements to the process (system) to reduce costs and improve production have reduced the system resistance, changing where the fan operates.
Very often we find “efficient” fans operating inefficiently.
Replacement Fan Housings and Other Fan Equipment
Ventmeca provides replacement fan housings and other components.
We can replace existing units with identical parts or engineer improvements to enhance performance. These improvements may include the addition of wear liners in problem areas, enhanced corrosion resistance, better access to the interior of the fan, custom splits and configurations for tight installations to facilitate rotor replacement, and improved shaft seals.
Additionally, we offer custom heavy-duty dampers and expansion joints.
Replacement Heavy-Duty Dampers and Expansion Joints
Ventmeca can replace lightly constructed OEM dampers and expansion joints with heavy duty construction and wear resistant materials. These upgrades result in longer wear life, reduced pressure drops, and improved overall efficiency and performance. If your fan equipment needs improvement, Ventmeca is here to help.