Working principle of shielded pump
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This post was last edited by foam_ZPTK on 2018-7-18 at 17:00. I would like to ask experts about the principle of this type of pump
High-temperature separation type: the pump is equipped with a secondary impeller. Thanks to the action of this secondary impeller, the fluid passes through the gap in the shield sleeve, reaches the sliding bearing at the front, then goes to the external heat exchanger; it enters from the back, passing through the shaft hole to reach the location of the secondary impeller. Another path of fluid leads to the rear sliding bearing, from the hole in the shaft to the position of the auxiliary impeller.
This post was last edited by foam_ZPTK on 2018-7-18 at 17:02. The cooling water is used to cool the motor as well as the medium. When the cooling water for cooling the motor is used in series with that of the cooling heat exchanger, it is necessary to power on the motor first and then the heat exchanger
It is the process by which the medium exiting the pump of a shielded pump flows back to the end of the motor in order to cool and lubricate the graphite bearings; however, since the temperature of the medium being transported is relatively high, several loops are added to the return line to use air cooling to lower the temperature of the returning medium.
These are old-model pumps from a long time ago; were they used in our workshop in Jiamusi? Their working principle is the same everywhere. The coiled tubes on top are used for the circulation of fluid and cooling water. Nowadays, there are high-temperature shielded pumps, but with these it’s difficult to use coiled tubes as they tend to get damaged easily
Types of canned pumps: Based on various requirements such as the temperature, pressure of the liquid to be transported, the presence of particles, and its viscosity, canned pumps can be divided into the following types: 1. Basic type (standard type); 2. Counterflow type; 3. High-temperature type; 4. High-melting-point type; 5. High-pressure type; 6. Self-priming type; 7. Multi-stage type; 8. Slurry type. Check the manufacturer’s label to determine which type yours belongs to. For the working principle, see the explanation below; there is also an animated demonstration available. https://bbs.hcbbs.com/thread-2029619-1-1.html
Integrated pump design, suitable for flammable, explosive, toxic, and hazardous environments