Jinan Hongpeng Ventilation Equipment Co., Ltd finished a ventilation energy-saving transformation project for a pharmaceutical purification workshop last year, which reflected the huge air leakage loss caused by non-standard mixed flow fan pipeline connection sealing process. Before renovation, the workshop’s mixed flow fan and air duct connection only adopted thin single-layer rubber gaskets without standardized sealing construction technology, the air leakage rate at each fan pipeline joint reached 21% to 27%, the fan needed to run at full load for a long time to compensate lost air volume, the workshop purification ventilation system annual power consumption reached 180,000 kWh. Our technical construction team adopted Hongpeng matched complete mixed flow fan pipeline connection sealing skills and supporting special sealing accessories, including multi-layer composite sealing gaskets, flange anti-leakage pressing strips and elastic flexible connecting sleeves, and carried out standardized sealing construction according to our proprietary process specifications. After the renovation was completed, professional air leakage testing equipment was used for overall inspection, the average air leakage rate of all mixed flow fan pipeline joints dropped to below 2.8%. After one year of operation statistics, the workshop purification ventilation system annual power consumption decreased by 38%, the renovation investment cost was fully recovered within 13 months. This high-standard purification workshop project fully proves that standardized mixed flow fan pipeline connection sealing skills can effectively cut air leakage loss during long-term equipment operation and bring obvious energy-saving benefits.
Mixed flow fan pipeline connection positions are the highest air leakage risk points of the whole ventilation system, uneven flange flatness, single thin sealing material, incomplete joint wrapping and loose fixing bolts are four core factors leading to continuous air leakage during fan operation. Hongpeng R&D and construction technical teams summarized a set of targeted mixed flow fan pipeline connection sealing skills after hundreds of on-site construction and wind tunnel simulation tests, forming three-layer interception sealing logic to eliminate multi-directional air leakage channels at fan joints. The first layer sealing skill adopts multi-layer composite TPV sealing gasket matched with mixed flow fan flange, uniform bolt tightening sequence ensures the gasket evenly stressed to fill tiny gaps between fan and duct flange, avoiding local gap leakage caused by uneven compression; the second layer sealing skill uses anti-leakage pressing strip to wrap the outer edge of the flange joint, forming secondary air barrier to block airflow escaping from flange side gaps; the third layer sealing skill installs integrated elastic flexible connecting sleeve outside the fan pipeline joint, isolate the vibration displacement generated by mixed flow fan operation, prevent vibration friction from tearing the inner sealing gasket and causing secondary air leakage. This set of standardized sealing construction skills cooperates with Hongpeng special supporting sealing accessories, fundamentally restrain fan pipeline joint air leakage, reduce extra load of mixed flow fan and cut long-term ventilation energy consumption. We have compiled detailed step-by-step sealing operation guide for construction teams to standardize fan pipeline connection construction.
The national purification ventilation equipment quality inspection center carried out air tightness performance test on Hongpeng mixed flow fan matching sealing construction technology and supporting sealing accessories, the test report confirmed that the pipeline joint air tightness formed by our standardized sealing skills meets Class 1 ultra-high air tightness standard specified in GB 50243 ventilation and air conditioning engineering construction acceptance specification, which is the mandatory sealing grade for pharmaceutical and electronic purification workshops. The center’s purification ventilation chief testing engineer commented in technical appraisal that most construction teams only use random ordinary thin gaskets for mixed flow fan pipeline connection, without standardized layered sealing construction skills, which cannot meet the low air leakage requirements of high-standard purification ventilation systems; Hongpeng summed up targeted sealing skills matched with self-produced mixed flow fan and complete supporting sealing accessories, forming a complete fan joint air leakage control solution, which can help purification engineering projects pass air tightness acceptance at one time without secondary repair. European purification HVAC testing institutions also completed air leakage comparison test, verifying that the mixed flow fan pipeline constructed with Hongpeng sealing skills reduces joint air leakage volume by more than 87% compared with ordinary single-layer gasket construction process, meeting international high-cleanliness low-leakage ventilation standards.
Purification workshops, precision electronics factories and laboratory project parties have strict requirements on long-term sealing stability of mixed flow fan pipeline joints, and Hongpeng’s complete set of sealing construction skills and matched accessories rely on anti-aging raw materials and standardized operation to maintain low air leakage loss for years. The core TPV composite sealing gasket matched with mixed flow fan has stable elasticity within -25℃ to 115℃ temperature range, will not harden, shrink or crack after long-term fan vibration and cold-hot air circulation, no new leakage gaps formed in later operation. The elastic flexible connecting sleeve adopts anti-ozone, anti-ultraviolet aging formula, can buffer the vibration displacement of mixed flow fan operation, avoid vibration friction damaging internal sealing components, and the service life can reach more than 10 years. All sealing accessories are produced with unified mold specifications, perfectly fit the flange size of Hongpeng all series mixed flow fan, no dimensional mismatch leading to incomplete sealing. Each batch of sealing accessories is attached with material environmental protection test report and air tightness detection data, all sealing construction operation standards are recorded into complete technical files, clients can send construction technicians to receive professional sealing skill training at our factory before project construction.
Different from manufacturers that sell mixed flow fan and sealing accessories separately without matching construction guidance, Jinan Hongpeng Ventilation synchronously develops mixed flow fan and special supporting sealing accessories in product development stage, and summarizes exclusive pipeline connection sealing skills aiming at the flange structure, vibration characteristics and application scenarios of mixed flow fan. All sealing accessories are tailor-made according to the flange thickness, bolt hole spacing and vibration amplitude of each series mixed flow fan, standardized sealing construction skills avoid on-site random cutting and irregular operation leading to poor sealing effect. Our mixed flow fan product line covers rectangular, circular, low-noise high-static pressure multi-specification models, all sizes correspond to matched layered sealing accessories and unified sealing operation process. Whether for pharmaceutical purification ventilation systems, factory waste gas exhaust pipelines or laboratory constant air volume ventilation equipment, Hongpeng mixed flow fan matched sealing skills and supporting accessories can effectively block pipeline joint air leakage during equipment operation, cut air leakage loss and reduce long-term fan power consumption. This integrated solution combining mixed flow fan, special sealing accessories and standardized sealing construction skills fully reflects our company’s comprehensive professional strength in industrial ventilation fan manufacturing and energy-saving pipeline sealing technical supporting services.
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To expand into overseas markets and leverage Hongpeng’s 30-year manufacturing foundation, Jinan Huifengquan Building Materials Trading Company was established; the company’s production base spans an area of 80,000 square meters. Equipped with modern production workshops, an experienced production team, and professional technical engineers, the company possesses robust engineering and manufacturing capabilities within the ventilation industry. Looking ahead, Hongpeng Ventilation remains committed to the corporate spirit of "Quality, Innovation, Integrity, and Mutual Success," dedicated to serving every client wholeheartedly. Our mission is to enable people to breathe cleaner air for the long term.
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