This pump was developed through advanced R&D. It features a compact structure, small footprint, powerful performance, reliable quality, and a leak-free design, making it exceptionally user-friendly. To handle corrosive media, the pump industry developed corrosion-resistant magnetic drive pumps; these achieve corrosion resistance by lining wetted parts (flow-path components) with materials such as fluoroplastics. Currently, my country's corrosion-resistant magnetic drive pumps have reached an advanced international standard and are widely used in sectors such as petroleum and petrochemicals, the chemical industry, metallurgy, pharmaceuticals, papermaking, electrolysis, and pickling. As a manufacturer of these pumps, Shanghai Shenyin Pump Co., Ltd. outlines below the advantages, applications, features, and installation methods of this product.
Advantages of corrosion-resistant magnetic drive pumps:
1. Wetted parts—such as the pump casing, impeller, and isolation sleeve—are manufactured by integrally sintering and molding fluoroplastics over metal inserts;
2. Fluoroplastics are among the world's best corrosion-resistant materials, remaining undamaged by corrosive media such as acids, alkalis, and oxidizing agents of any concentration or strength;
3. These leak-free fluoroplastic magnetic drive pumps are a new type of acid-resistant pump characterized by low flow rates, low heads, full sealing, zero leakage, and high energy efficiency;
4. Ferrite magnets are used, offering excellent magnetic properties, high-temperature resistance, and resistance to demagnetization;
5. Rotating rings and sliding bearings are made from highly wear- and heat-resistant materials like graphite and PTFE, effectively ensuring a long service life;
6. The outer magnet connects directly to the motor shaft; this direct-drive design offers advantages such as structural simplicity, no need for alignment, high transmission efficiency, and low noise and vibration;
7. The direct-drive, back-pull-out design and horizontal installation result in a compact structure with a small footprint, minimal vibration and noise, and exceptionally smooth operation;
8. No independent lubrication or cooling water is required, reducing energy consumption;
9. A fully enclosed static seal is used, completely eliminating media leakage.
Applications and features of corrosion-resistant magnetic drive pumps
The corrosion-resistant magnetic drive pump retains the advantages of standard magnetic pumps—such as compact structure, aesthetic design, small footprint, low noise, and reliable operation—while incorporating superior materials. Its wetted parts are constructed from fluoroplastics (renowned globally for exceptional corrosion resistance), and the containment shell is made from a special high-strength material that eliminates the magnetic eddy current phenomenon found in conventional magnetic pumps. Consequently, the CQB fluoroplastic magnetic pump can safely transport corrosive media—including acids, alkalis, and oxidizing agents of any concentration—without sustaining damage. It is the ideal pump for chemical processing applications aiming to eliminate leaks, spills, and drips, prevent environmental pollution, and establish "leak-free workshops" and "leak-free plants" that ensure safe and civilized production. These pumps are widely used across industries such as chemicals, acid and alkali production, smelting, rare earth processing, pesticides, dyes, pharmaceuticals, papermaking, electroplating, electrolysis, pickling, electronics, and defense. They are suitable for transporting acids, alkalis, oils, rare/precious liquids, toxic substances, and volatile chemical media of any concentration, and are particularly well-suited for handling liquids that are prone to leakage, flammable, or explosive. Operating temperature range: -50°C to 120°C (specific material selection is required for temperatures exceeding 100°C). Product Features: Based on modern magnetic principles, this pump utilizes permanent magnets to achieve contactless, indirect power transmission. When the motor drives the rotation of the outer rotor assembly (outer magnet), magnetic flux lines pass through the containment shell to drive the inner rotor assembly (inner magnet) and impeller to rotate synchronously. As the medium remains completely enclosed within the stationary containment shell, leak-free pumping is achieved; this design fundamentally resolves the shaft seal leakage issues associated with mechanically driven pumps, resulting in a fully sealed, leak-free, and pollution-free industrial pump. Installation instructions for corrosion-resistant magnetic drive pumps:
1. The pump should be installed horizontally rather than vertically; the plastic pump casing must not bear the weight of the piping. In cases where vertical installation is specifically required, the motor must be positioned facing upwards.
2. If the liquid level at the suction source is higher than the pump's centerline, simply open the suction valve before starting. If the liquid level is lower than the centerline, a foot valve must be installed on the suction line.
3. Inspect the pump before use: ensure the motor fan rotates freely without binding or abnormal noise, and verify that all fasteners are securely tightened.
4. Check that the motor's direction of rotation matches the directional mark on the pump.
5. After starting the motor, slowly open the discharge valve; once the pump reaches normal operating conditions, adjust the discharge valve to the desired opening.
6. Before stopping the pump, close the discharge valve first, followed by the suction valve.
Robust pump casing structure: The drive mechanism utilizes a driving magnet coupling mounted directly onto the motor shaft. The pump chamber is fully sealed, and the impeller—equipped with magnets—is driven indirectly via magnetic coupling. This design is compact, safe, and energy-efficient. Although the wetted parts are made of fluoroplastic, the outer casing is constructed from metal, allowing the pump body to withstand piping loads and mechanical impacts.
An overview of the advantages, applications, features, and installation methods of corrosion-resistant magnetic drive pumps—