Product Introduction

The ZMD series self-priming magnetic pump adopts a motor direct connection structure, supported by a middle bracket, with a compact structure and easy disassembly and maintenance. The high-performance magnetic material "neodymium iron boron" is used to manufacture the inner and outer magnets, and the isolation sleeve is made of imported non-metallic materials, which solves the magnetic eddy current loss of general magnetic pumps and can transport high concentration and strong corrosive media with a density greater than 1.84 t/m3; The main components are made of steel lining F46, and the pump body has high strength and can withstand corrosion from all strong acids and alkalis; The product combines the advantages of magnetic pumps and self-priming pumps, and is an extension and development of IMD magnetic pumps. Its prominent feature is that it has both the self-priming function of self-priming pumps and the leak free and quiet operation advantages of magnetic pumps, making it a substitute for submersible pumps. Especially suitable for transporting flammable, explosive, toxic, volatile, and valuable media. It has been mass-produced and replaced imported magnetic pumps in many projects.
ZMD self-priming magnetic pumps are widely used in industries such as petrochemicals, acid and alkali production, non-ferrous metal smelting, acid washing processes in automotive manufacturing, rare earth separation, pesticides, dyes, pharmaceuticals, papermaking, electroplating, radio, etc. for transporting acids, alkalis, oils, rare and valuable solutions, venoms, volatile liquids, especially flammable, explosive, and high density liquids. Applicable temperature: -20 ℃ to 100 ℃.
The ZMD series self-priming magnetic pump adopts an advanced external mixing axial return water pump body structure design. The pump body consists of a suction chamber, a storage chamber, a volute shell, a return hole, a gas-liquid separation chamber, and other parts (see the schematic diagram for the structure). After the pump is started, under the action of centrifugal force, the remaining liquid in the suction chamber and the air in the inlet pipeline are stirred by the impeller to form a gas-liquid mixture. The mixture enters the gas-liquid separation chamber through the volute shell, and as the flow rate decreases, it causes gas-liquid separation. The air is discharged from the pump outlet, and the liquid returns to the pump chamber through the reflux hole. After multiple cycles, the air in the inlet pipeline is gradually emptied, forming a certain degree of vacuum in the pump chamber. The liquid in the low-level tank flows towards the pump inlet under atmospheric pressure, achieving self-priming. This series of self-priming processes is automatically completed by the pump within 1 to 3 minutes of start-up, without manual intervention. When the liquid fills the pump inlet pipeline and pump chamber, the pump group It automatically enters the normal operating state. The driving device of the pump adopts an active magnetic coupling directly installed on the motor shaft, and the pump chamber is fully enclosed. The impeller on the rotor combination is indirectly driven to rotate through magnetic coupling, ensuring that the entire unit has no leakage.

Structure and Materials

1 Pump body Steel lining F46 2 Pump cover Steel lining F46 3 Front mouth ring of impeller Fill F4 4 Anti retreat ring Silicon carbide or alumina ceramics 5 IMPELLER NUT Fill F4 6 Spindle Silicon carbide or alumina ceramics 7 Static Ring Silicon carbide or alumina ceramics 8 Rear mouth ring of impeller Fill F4 9 impeller Fluoroplastic alloy 10 Front cover Steel lining F46 11 Export flange Steel lining F46 12 front bearing Fill F4 13 Spacer sealing ring VITON 14 Isolation sleeve combination F46+reinforced sleeve 15 Rotor F46+high-performance rare earth permanent magnet 16 REAR BEARING Fill F4 17 External magnetic field High performance rare earth permanent magnet+HT200 18 Bracket HT200