Stainless steel insulated gear pump magnetic coupling

Stainless steel insulated magnetic gear pump, also known as magnetic insulation gear pump in the industry, is a volumetric conveying equipment that integrates magnetic drive, jacket insulation, and stainless steel gear pump. Eliminating traditional mechanical seal structures and relying on magnetic coupling for non-contact torque transmission, replacing dynamic seals with static seals, poses a risk of medium leakage; The pump body is equipped with an integrated insulation layer, which can be continuously heated by steam and thermal oil to prevent low-temperature crystallization and solidification of the medium. Can be equipped with motors and variable frequency control systems, applied in chemical, grain and oil food, pharmaceutical, resin processing, and new energy auxiliary material transportation, suitable for continuous cycle feeding and intermittent transfer of storage tanks.

The entire unit consists of a stainless steel pump head, insulation jacket cavity, heat-treated stainless steel master and slave gears, transmission shaft, thrust plate, magnetic transmission assembly, isolation sleeve, common base, and drive motor. The overcurrent components are made of 304/316 stainless steel, which is corrosion-resistant and not easily contaminated with materials; The gears undergo precision grinding and hardening treatment, resulting in smooth meshing and stable volumetric efficiency. The magnetic transmission assembly includes an outer magnetic rotor, an inner magnetic rotor, and a non-magnetic isolation sleeve. The inner and outer magnets have no rigid contact and operate with low vibration. The pump chamber is equipped with an axial force balance flow channel to balance the axial thrust under high-pressure conditions and reduce unilateral wear of the thrust plate. The surrounding insulation layer covers the pump body and pump cover, providing uniform heating and avoiding viscous media from stopping, clumping, and sticking gears. The internal moving parts rely on the self lubrication of the conveying medium, without the need for additional independent lubrication pipelines.

The motor drives the outer magnetic rotor to rotate, relying on magnetic field suction to penetrate the isolation sleeve and synchronously drive the inner magnetic rotor and gear to operate. The expansion of the cavity volume on one side of the gear disengagement creates negative pressure, and the medium is sucked in to fill the tooth groove; The gear carries the medium to rotate to the oil pressure chamber, and the meshing of the teeth squeezes the medium to form a stable pressure for outward transportation. The suction, pressurization, and discharge cycles continue to operate. The flow rate is linearly related to the speed, and the conveying volume can be adjusted by using a frequency converter; The equipment has basic self-priming ability and can be repeatedly started and stopped after the initial pre filling of the medium.

The pump body can be equipped with a built-in reflux valve as an emergency overload protection. When the pipeline is blocked or the valve is closed, causing pressure buildup, the medium will reflux and release pressure inside, protecting the pump body and pipeline accessories. Valves are only suitable for temporary protection against sudden failures and cannot be used as long-term stabilizing devices. It is recommended to connect an independent overflow pipeline for constant pressure conditions. The inner wall of the pump body is smooth and flat, and the material is not easy to adhere and accumulate, making it easy to shut down and clean.

The whole machine has no shaft end dynamic seal, and there is no problem of seal wear and leakage; The isolation sleeve and pump body are all sealed with static sealing gaskets. Fluororubber and PTFE static sealing components can be selected according to the working conditions of the medium. Sealing is used for transporting edible oil and syrup; Select sealing accessories for transporting weakly corrosive solvents and chemical raw materials. Modular assembly structure, maintenance does not require dismantling the entire machine. Removing the outer pump cover allows for maintenance of gears and thrust plates, reducing the downtime of the production line. Conventional media are suitable for temperatures ≤ 180 ℃, and insulation models can meet the continuous transportation of easily solidified viscous materials.

On the media adaptation level, the stainless steel thermal insulation magnetic gear pump is suitable for conveying liquid media without hard sharp particles, long fiber impurities, and fluidity. The medium kinematic viscosity range is 5~1500mm2/s, and it is suitable for easily solidified heavy oil, resin, edible oil, essence, chemicals, lubricating oil, and slightly corrosive chemical auxiliary materials. The 304 model is mostly used for transporting grain and oil, as well as ordinary daily chemical raw materials; The 316 model is suitable for corrosive chemical solutions and raw materials. Especially suitable for conveying flammable, explosive, volatile, toxic, and high-purity media. The equipment is not suitable for conveying media containing strong oxidizing acids and large amounts of hard solid particles.

In terms of installation and matching, the horizontal base of the whole machine is reserved with standard foot installation holes, and two types of inlet and outlet interfaces, flange and thread, are available for easy docking of soft and hard pipelines. Magnetic transmission comes with shock absorption effect, and assembly does not require complex centering buffer structures, but it is still recommended to fix the base smoothly. Install a pre filter on the suction pipeline to intercept impurities and prevent gear scratches; The pipeline joint is equipped with a sealing gasket, which causes insufficient suction due to air intake. Before starting, it is necessary to inject the medium into the pump chamber. It is strictly prohibited to idle for a long time, as this can cause heating and demagnetization damage to the isolation sleeve; The insulation machine transports solidified materials and preheats the pump chamber before starting up.

At the level of daily maintenance operations, the pump body adopts modular assembly, and the gears, thrust plates, and magnetic components can be disassembled separately. Simple and universal tools can be used to complete maintenance. After conveying viscous and easily dry materials, use a clean solvent to circulate and rinse the pump chamber to prevent the material from drying and sticking to the gears. Regularly inspect the isolation sleeve for wear and tear, check for temperature rise during motor operation, and promptly clean up filter debris; Avoid running without load and under pressure for a long time. Long term shutdown to empty the residual medium inside the pump chamber and take internal rust prevention measures.

During long-term use, we adhere to pre filtration, standardized start stop, and regular cleaning and maintenance, resulting in a lower overall failure rate. The magnetic zero leakage structure poses a hidden danger of flammable and explosive medium leakage, while the insulation structure solves the problem of material solidification. The stainless steel material is also hygienic, with multiple layers, making it a volume conveying equipment with high environmental requirements and easy crystallization and solidification conditions for the medium.

Overall, the stainless steel insulated magnetic gear pump relies on a magnetic coupling zero leakage structure, an integrated insulation jacket, stainless steel overcurrent components, and precise gear meshing to achieve stable pressure delivery. It can be optionally configured with variable frequency and is suitable for chemical, grain and oil, pharmaceutical, and high-risk medium transportation scenarios. It operates environmentally friendly and is easy to maintain.