Multistage blower capable of performing water cooling

Abstract

The invention relates to a multistage blower capable of performing water cooling and belongs to the technical field of air blowers. The technical scheme of the multistage blower is that a closed annular space is formed between two plate-shaped partition plates of a middle casing and a steel framework and an impeller sealing ring, a cooling liquid outlet (10) and a cooling liquid inlet (11) are arranged on the steel framework, a cooling water inlet system is connected with a cooling liquid inlet of the steel framework, and a cooling water return system is connected with a cooling liquid outlet of the steel framework. Cooling water enters the annular space between the two plate-shaped partition plates and the steel framework and the impeller sealing ring, and the temperature of the middle casing can be controlled by adjusting flow of the cooling water. The multistage blower capable of performing water cooling has the advantages that a motor can be configured for the multistage blower, so that the problem that power of the configured motor is high and energy can be wasted due to 50-60 DEG C of temperature difference throughout four seasons can be solved, hidden safety hazard like scalding can be prevented, temperature of an air outlet casing is reduced, temperature rising of a transmission shaft at the air outlet end is reduced, and working conditions of a bearing are improved.

Description

technical field [0001] The invention relates to a multi-stage air blower which can be cooled by water and belongs to the technical field of air blowers. Background technique [0002] The multi-stage blower is a blower composed of two or more impellers connected in series. The multi-stage blower is mainly used for conveying air, gas, chemical gas, water treatment and other fields. The gas compression of the multi-stage blower is that the first-stage impeller sucks the gas from the intake casing and compresses it into the middle casing with a reflux device, and then enters the second-stage impeller for re-compression, followed by multiple compressions, and finally Exhausted from the outlet casing. During the gas compression process of the multi-stage blower, because the impeller does work on the gas, the high-speed friction between the gas and the impeller, the gas and the casing generates heat, so that the temperature of the gas, the temperature of the impeller, and the casi...

AI Technical Summary

Problems solved by technology

The problems in the background technology are: firstly, the temperature of the gas is too high; secondly, the outlet pressure of the blower is reduced; thirdly, the temperature of the blower casing is too high, which may cause safety hazards such as burns to the workers on site; The pressure drops, especially causing the water treatment system to not aerate properly; fifth, because the temperature difference between the four seasons of the fan is 50-60°C, the power of the motor equipped with the blower is too high, resulting in waste of energy; sixth, the temperature of the drive shaft at the outlet end rises too much high problem

In addition, in the background art, the intermediate casing is assembled by gray iron reflux and the intermediate body, or cast into one body. The existing problems are: the cast intermediate casing has a complicated structure, is prone to waste products, has low manufacturing precision, high cost, and compression The resistance of the gas flow channel is large, it is not suitable for multi-variety production, and the product adaptability is poor

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