Zhejiang Jinhua PVC resin powder dense phase pump pneumatic conveying general contracting project
At a PVC resin powder manufacturer in Jinhua, Zhejiang, the original material transportation process has long faced challenges such as dust leakage, severe pipeline wear, and persistently high energy consumption. Traditional mechanical or dilute-phase pneumatic conveying methods not only result in a high material damage rate for PVC resin powder, which is lightweight, fragile, and prone to static electricity, but also affect the continuous operation of production lines due to frequent filter bag cleaning and pipe replacement. To address this, the company urgently needed a sealed conveying system that could support material quality while achieving low energy consumption and low failure.
Customer pain points
PVC resin powder particles are fine and lightweight, making it highly susceptible to high-speed friction during traditional pneumatic conveying, causing rapid wear on the inner wall of the pipeline. At the same time, the powder breaks up after impact, directly affecting downstream product quality. In addition, high-velocity dilute phase conveying carries large amounts of dust into the dust removal system, with heavy filter bag loads, frequent replacements, and severe dust generation at the discharge point, which does not meet increasingly stringent environmental protection requirements. Enterprise workers need to regularly stop machines for cleaning, resulting in high maintenance costs and limited production efficiency.
Product advantages and solutions
To address these pain points, a company deployed a dense phase silo pump pneumatic conveying system for them. This scheme adopts the principle of low-pressure, low-speed dense phase conveying, using compressed air to smoothly advance PVC resin powder through pipelines in plug-in or fluidized form, effectively reducing the collision speed between material and pipe walls, keeping the powder crushing rate within a minimal range, and reducing pipeline wear. The system operates in a fully enclosed manner, with no dust leakage, meeting environmental protection standards. The silo pump is equipped with an automatic control program that can intelligently start and stop based on material level signals, achieving unattended operation; Combined with efficient gas supply and exhaust circuits, energy consumption per ton-kilometer is reduced by more than 30% compared to traditional dilute-phase conveying, significantly saving operating costs for enterprises. Since its commissioning, the production line has operated continuously and stably, material quality has been maintained, maintenance frequency has decreased by about 70%, and it has been fully recognized by customers.