Why Do IHF Fluoroplastic Centrifugal Pumps Use Bellows Mechanical Seals?
2025-09-22 15:55:17
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IHF series fluorine plastic centrifugal pump utilizes an externally mounted bellows mechanical seal, enabling long-term, stable, zero-leakage operation in complex operating conditions characterized by strong corrosion, particulate matter, and crystallization. This design is able to ensure the pump's proper operation and a safe working environment. At same time, the seal is insensitive to external factors, making it particularly suitable for harsh operating conditions such as high pressure and high temperature. The advantages of this design are fully amplified during each startup, long-term operation, maintenance, and shutdown, translating into tangible economic benefits for users.
This pump's dynamic and static seals are constructed of 99.9% alumina ceramic with PTFE filler, which ensures smooth end faces even when conveying highly corrosive media as chlorine, hydrofluoric acid, and sulfuric acid, leaving no signs of cracking after repair or disassembly. However, traditional internally mounted mechanical seals can corrode internal parts when conveying highly corrosive media, leaving visible signs of corrosion. IHF series horizontal centrifugal pump's externally mounted bellows mechanical seal effectively enhances the pump's corrosion resistance and triples its service life.
Generally speaking, the PTFE bellows used as a seal are both a sealing component and an elastic element. They can compensate for pump shaft deviation or bearing wear within a certain radial runout range in real time, preventing the spring from becoming stuck by particles and causing a pressure imbalance. Furthermore, the externally mounted structure exposes the pump's seal to the atmosphere. Maintenance requires no movement of the motor or removal of the pump, just simply loosen the bracket gland to pull out the entire seal and replace it. This reduces average maintenance time from two hours to 15 minutes. This design not only significantly reduces maintenance time but also significantly reduces maintenance costs, effectively increasing economic benefits.
The seal of IHF series chemical centrifugal pump combines the advantages of corrosion resistance, zero leakage, long service life, automatic compensation and quick maintenance, which enables the pump to maintain efficient, stable and reliable delivery effect in the process of conveying corrosion-resistant media, thus gradually becoming an ideal choice in the chemical industry.
