Brushless DC magnetic drive pump magnet and impeller injection molding into one motor rotor, the rotor has a direct injection molded sleeve in the middle, high-performance ceramic shaft fixed in the housing, the motor stator and circuit board part of the epoxy resin Plastic potting in the pump body, the stator and the rotor has a thin-walled isolation, without the need to be accompanied by the traditional mechanical shaft seal, which is completely sealed. Motor torque is through silicon steel (stator) on the coil after the magnetic field generated by the permanent magnet motor (rotor) work. Magnet for n (n is even) level magnetization so that the magnet part of the mutual coupling of the complete magnetic system. When the magnetic pole of the stator coil and the magnetic pole of the magnet are oppositely polar, that is, the displacement angle between the two magnetic poles is Φ = 0, the magnetic energy of the magnetic system is the lowest; when the magnetic pole rotates to the same pole, that is, the displacement between the two magnetic poles Angle Φ = 2π / n, the magnetic system at this time the maximum magnetic energy. After removing the external force, due to the mutual exclusion of the magnetic poles of the magnetic system, the magnetic force will restore the magnet to the state with the lowest magnetic energy. So the magnet produces the movement, drives the magnetism rotor to rotate.
Brushless DC pump through the electronic commutation, without the use of carbon brushes, magnet rotor and stator silicon steel has multi-stage magnetic field, when the relative rotation of the magnet rotor relative to the stator will automatically change the direction of the pole, the rotor always remain the same level of exclusion, So that brushless DC magnetic isolation pump has a higher speed and efficiency.
Magnetically isolated pump stator and rotor completely isolated, completely avoiding the traditional motor-type brushless DC water pump there is the problem of liquid leakage. And can be completely submersible and fully waterproof, effectively improve the life of the pump and performance.
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The so-called Pharmaceutical Intermediates are actually some chemical raw materials or chemical products used in the process of drug synthesis. This kind of chemical product does not require a pharmaceutical production license and can be produced in an ordinary chemical plant. As long as it reaches a certain level, it can be used for the synthesis of pharmaceuticals.
Our country needs more than 2,000 kinds of raw materials and intermediates for chemical industry every year, and the demand is over 2.5 million tons. After more than 30 years of development, the chemical raw materials and intermediates required for the country's pharmaceutical production can basically be matched, and only a small part of it needs to be imported. Moreover, due to my country's abundant resources and low raw material prices, many intermediates have been exported in large quantities.
On the one hand, product updates in this field are fast. Generally, after a product has been on the market for 3 to 5 years, its profit margin will drop significantly. This forces companies to continuously develop new products or continuously improve production processes in order to maintain a high production profit; on the other hand, due to the production profit of pharmaceutical intermediates Higher than chemical products, the production process of the two is basically the same, so more and more small chemical companies have joined the ranks of producing pharmaceutical intermediates.
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