Engineered for durability and operational efficiency across extreme industrial applications.
Within modern process manufacturing, municipal operations, and heavy infrastructure, air motion systems dictate overall system efficiency. Backward Inclined (BI) Centrifugal Blowers represent a peak thermal-aerodynamic achievement. Featuring flat blades slanted away from the direction of wheel rotation, BI blowers demonstrate highly efficient mechanical work translation with optimized flow characteristics.
Unlike forward-curved fan configurations, backward inclined designs are uniquely categorized by their non-overloading power curves. As static system pressure drops and volume flow rates increase, the brake horsepower (BHP) required curve peaks and then flattens or declines. This eliminates the risk of motor burnouts under variable load scenarios, establishing them as the default selection for critical process systems.
Our advanced manufacturing facility focuses on delivering high-efficiency backward inclined and centrifugal blower units globally.
Shandong Zhangqiu Blower Co., Ltd. (formerly Shandong Zhangqiu Blower Works) stands as a foundational pillar in the industrial air handling sector. With over 50 years of design innovation and manufacturing technology, our organization has established two Sino-Japanese Joint-Ventures and a dedicated United States branch, becoming one of the first domestic companies to build an overseas support network.
In July 2011, the company was officially listed on the Shenzhen Stock Exchange (Stock Code: 002598). This landmark event accelerated our capital reinvestment, expanding our R&D centers across Beijing, Shanghai, Shijiazhuang, and Wuxi, while establishing four heavy manufacturing bases in Jiangsu Wuxi, Guangdong Dongguan, Hunan Chenzhou, and Gansu Jinchang. Our consolidated operations achieved 1.5 billion yuan in operating income in 2020, solidifying our rank as a primary industry leader.
Through our core strategy—"Develop main business, pioneer new fields and innovate, cooperate to be a great company"—we cultivate specialized solutions ranging from Roots and Centrifugal Blowers to MVR Evaporators, Industrial Pumps, and complete Pneumatic Conveying Systems.
How Backward Inclined Blowers operate within regional infrastructure, municipal systems, and specific manufacturing processes.
Crucial for municipal aeration grids, supplying steady, highly efficient dissolved oxygen. The non-overloading curve accommodates changing wastewater levels without strain on the system's motors.
Engineered to handle elevated gas temperatures and minor ash particulates, providing continuous flue draft in localized power generation plants and waste-to-energy recovery networks.
Provides constant, non-pulsating high-volume airflow through dense HEPA filter configurations, maintaining strict pressure boundaries for pharmaceutical and semiconductor manufacturing facilities.
| Application Scenario | Required Volume (m³/min) | Static Pressure Range (Pa) | Optimal Material / Construction | Key Performance Parameter |
|---|---|---|---|---|
| Wastewater Aeration | 50 - 450 | 30,000 - 90,000 | Heavy Cast Carbon Steel / Marine Epoxy | Variable Flow High Static Efficiency |
| Flue Gas Recirculation | 100 - 800 | 2,000 - 15,000 | AISI 316L / Hardox Anti-Wear Lining | Thermal Resistance up to 350°C |
| Semiconductor Cleanroom | 200 - 1,500 | 800 - 4,500 | Anodized Aluminum / Dynamic Balancing G2.5 | Low Mechanical Noise & Zero Vibration |
| Pneumatic Conveying | 20 - 250 | 40,000 - 120,000 | Hardened Alloys / Multi-lip Shaft Seal | Continuous Pressure Stability |
For international buyers, the dependability of the supplier's manufacturing facilities is as vital as the product specs. Shandong Zhangqiu Blower Co., Ltd. operates with a fully integrated, resilient supply chain that buffers against geopolitical shifts and logistics constraints. Over our 430,000 m² industrial park, we maintain raw material reserves, casting systems, and automated finishing lines to insulate production schedules from market volatility.
Our facility features a wide range of advanced machining and testing technologies, including:
Our machine shops utilize advanced CNC and PLM tech to keep manufacturing tolerances within micrometer limits.
As heavy industry shifts toward digitalization and zero-emission standards, the design parameters for industrial blowers are evolving. At Shandong Zhangqiu Blower Co., Ltd., our engineering roadmap focuses on three primary pillars:
Bridging geographical distance with engineering documentation and localized support structures.
Our US branch office and international distributors bridge logistics gaps, coordinating delivery, commissioning, and direct technical consultations in local time zones.
Our design team delivers complete 3D drawings and CAD structural confirmations within 24 hours of inquiry, streamlining project engineering timelines.
Every system complies with leading global standards, holding CE, ISO9001, ISO14001, ISO50001, and specialized mining safety approvals.
Expert engineering answers for procurement specialists and system operators.
Request a quote, request comprehensive technical catalogs, or schedule an engineering consultation with our R&D team.
With operations extending across North America, Europe, and Asia, our team assists you with system design, mechanical calculations, and after-sales support.
Additional products engineered to support slurry management, pneumatic conveying, and process aeration.
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