What is the difference between a magnetic pump and a self-priming pump?

The magnetic pump is different from the drive mode in which the motor shaft directly drives the rotation of the impeller. The magnetic drive is adopted, and the shaft seal is not designed. The pump is composed of a pump, a magnetic actuator, and an electric motor. The key components of the magnetic actuator consist of an outer magnetic rotor, an inner magnetic rotor, and a non-magnetically conductive isolation cover. When the motor drives the outer magnetic rotor to rotate, the magnetic field can penetrate the air gap and the non-magnetic material, drive the inner magnetic rotor connected with the impeller to rotate synchronously, realize the dynamic non-contact transmission, and transform the dynamic seal into a static seal. Because the pump shaft and the magnetic rotor are completely closed by the pump body and the isolation sleeve, the problems of “running, running, dripping, and leaking” are completely solved. Self-priming pump, also known as big head pump, is different from general centrifugal pump. Before the centrifugal pump is working, the pump body and inlet pipe must be filled with water to make a vacuum state. When the impeller rotates quickly, the blade will prompt the water to rotate quickly. The rotating water flies from the impeller under the effect of centrifugal force. After the water in the pump is thrown out, the central part of the impeller forms a vacuum area. The water of Suwon is pressed into the inlet pipe by the pipe network under the action of atmospheric pressure (or water pressure). With this endless cycle, continuous pumping can be achieved.

As for the self-priming pump, which is a centrifugal pump with a self-priming device, the structure of the pump casing is changed. According to its self-priming performance, it can be installed within a certain height range during installation. Its NPSH is much larger than that of a centrifugal pump. With the pump casing structure, there is a piece of medium before the start. When the pump is running, the medium is discharged by the pump. The pump chamber is momentarily localized to a vacuum. We can know from the atmospheric pressure that the liquid at the pump inlet will suck up. (In fact, it is the contribution of atmospheric pressure. Just like we use straws to drink milk, it's not that we suck in milk. Instead, we suck the air in the milk bottle into the lungs. Atmospheric pressure then pushes the milk through the pipe to our mouth. In fact, a lot of people do not actually have this concept, and they always think that they have inhaled it in.) The entrance to the pump is continuously performed and the self-priming function is realized. Therefore, the self-priming pump is generally used in wastewater, sewage and other occasions.

Magnetic pump and self-priming pump is essentially a centrifugal pump, but the magnetic pump's torque transmission method is magnetic. The commonly used ZCQ magnetic pump is a successful new product that engineers and technicians have repeatedly studied and tested. Its performance has reached the same level in foreign countries. Advanced product level. The pump replaces the dynamic seal with a static seal, so that the flow passage components of the pump are completely sealed. This completely solves the problems of running, running, dripping, and leakage that cannot be avoided by other pump mechanical seals. The materials of the pump body and the flow passage components are all adopted. Corrosion-resistant stainless steel, steel jade ceramics, PTFE and other materials manufacturing, that is, the CQ magnetic drive pump function, but also ZX self-priming role. Now widely used in the refining and chemical industry, flammable, explosive, toxic, hazardous media leakage through the pump seal.