Dirty water source heat exchanger

Abstract

The invention discloses a dirty water source heat exchanger. The dirty water source heat exchanger comprises a shell, a heat exchange pipe assembly capable of rotating in the shell and a driving device used for driving the heat exchange pipe assembly to rotate forward and reversely, and a dirty water inlet and a dirty water outlet are formed in the shell. Clear water inside the heat exchange pipeassembly and the dirty water inside the shell have different temperatures, due to the existence of the temperature difference, heat transfer between the clear water and the dirty water is generated, so that the temperature of the clear water ascends or decreases, through the arrangement, after the dirty water enters the shell, the dirty water is rotated under driving of the heat exchange pipe assembly to form a downward rotational flow, so that downward suction force is generated on suspended or floating kind impurities, then the suspended or floating kind impurities are discharged, and the problem of blockage caused by suspended matters or floating objects is avoided; and the heat exchange pipe assembly rotates forwards and reversely in an alternate mode so that the scouring direction ofthe dirty water on the outer surface of the heat exchange pipe assembly can be changed, then impurities wound around the heat exchange pipe assembly fall off under the reverse scouring effect of the dirty water and can be discharged along with the dirty water, and the winding type dirt blockage is effectively removed.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a sewage source heat exchanger. Background technique [0002] In daily life, waste water can be seen everywhere, such as urban domestic sewage, bathroom sewage, slag washing water from steel plants, electroplating wastewater, printing and dyeing wastewater, spraying wastewater, etc. With the rapid development of the economy, the total amount of waste and sewage discharge in my country is increasing year by year. Waste water contains a large amount of heat energy that can be used. This part of heat can be used as a heat source for heat pumps, which can greatly recover the heat energy in urban sewage. More importantly, it saves energy and reduces consumption. However, the primary problem in the utilization of sewage heat energy is how to avoid the large amount of solid waste contained in sewage from clogging the heat exchange equipment. The impurities in urban sew...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems existing in the related technology at least to a certain extent, the application provides a sewage source heat exchanger, which can solve the problem that in the prior art, when the thermal energy of waste water is used, the heat exchanger is easily blocked and cannot be solved. Problems of winding type fouling and suspension type fouling

Images