Jiangsu Haifa Machinery Manufacturing Co., Ltd.

API685-HMA/HME series ultra-high temperature and high pressure sealless magnetic drive chemical process pumps designed and manufactured by Jiangsu Haifa Machinery are horizontal, single-stage, single-suction, radially split volute magnetic pumps. The unit consists of pump casing, magnetic coupling, bearing assembly and motor. The magnetic coupling is composed of inner magnetic rotor, outer magnetic rotor and non-ferromagnetic containment shell. The pump casing, pump cover and containment shell form a fully enclosed chamber for conveyed media. The clearance between inner/outer magnetic rotors and the containment shell ranges from 1.5 mm to 2.5 mm.

Based on magnetic theory, the motor drives the outer magnetic rotor to rotate. Permanent magnetic field penetrates the air gap and non-ferromagnetic materials to synchronously rotate the inner magnetic rotor connected to the impeller, realizing non-contact power transmission. This converts dynamic seal into static seal and completely eliminates leakage, dripping, splashing and escaping of media. It is the optimal substitute for conventional mechanical seal pumps and other sealless pumps, an ideal equipment for building leak-free factories and leak-free workshops.

HMA/HME series pumps comply with API685 standard. The magnetic drive system adopts patented technology, equipped with advanced self-circulation cooling system and hydraulic self-balancing axial force system. All key components are rationally designed with optimized materials and universally standardized, and the overall structure adopts back pull-out design. For working conditions such as high-temperature nitric acid and high head, we carry out targeted upgrades: magnetic steel enhancement, optimized containment shell, forced cooling, reduced single-stage load and solid particle conveying capability, to improve magnetic torque transmission capacity, thermal stability, internal cooling, limit torque transfer, control containment shell heat generation and thermal expansion.

Flow rate: 2~2600 m³/hHead: up to 300 mOperating temperature: -80~450 ℃Design pressure: 2.5 MPa~10 MPa

The pumps can deliver clean media or media with a small amount of non-ferromagnetic solid particles. Widely used in chemical, petrochemical, coal chemical, chemical fiber, environmental protection, pharmaceutical, bioengineering, printing and dyeing industries. Especially suitable for flammable, explosive, toxic, hazardous and high-value media. Within applicable scope, it can fully replace traditional shaft-sealed centrifugal chemical process pumps.

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