Low-temperature waste heat recycling device

Abstract

The invention discloses a low-temperature waste heat recycling device. A cold water pipe is vertically arranged in an outer barrel, a rotary barrel is arranged between the outer barrel and the cold water pipe, the rotary barrel is connected with a rotary driving mechanism, the section of the side wall of the rotary barrel is of a square toothed structure, an outer partition plate is arranged on the inner wall of the outer barrel inwards in the radial direction, an inner partition plate is arranged on the outer wall of the cold water pipe outwards in the radial direction, a cold water channel is formed in the cold water pipe, the upper end of the cold water pipe is provided with a cold water inlet, the lower portion of the cold water pipe is provided with a cold water outlet hole, a waste heat water channel is formed between the outer barrel and the rotary barrel, the upper portion of the outer barrel is provided with a waste heat water inlet, the lower portion of the outer barrel is provided with a waste heat water outlet, a warm water channel is formed between the rotary barrel and the cold water pipe, the warm water channel communicates with the cold water channel through the cold water outlet hole, the upper portion of the rotary barrel is provided with a warm water outlet hole, a warm water collector is arranged outside the warm water outlet hole, and the warm water collector is provided with a warm water outlet. The low-temperature waste heat recycling device has the advantages of being simple in structure, low in manufacturing cost and high in heat exchange efficiency.

Description

technical field [0001] The invention relates to the technical field of waste heat recovery, in particular to a low-temperature waste heat recovery device. Background technique [0002] A large amount of waste hot water in bathing centers, hot springs, washing plants, printing and dyeing plants, etc., is usually discharged directly due to its low temperature, many impurities, and difficulty in recycling, which will not only cause a lot of energy waste, At the same time, it will cause serious pollution to the environment. [0003] Traditional waste heat recovery heat exchangers mainly have two forms, namely plate heat exchangers and spiral plate heat exchangers; however, both plate heat exchangers and spiral plate heat exchangers are composed of layers The corrugated metal plates are stacked, and the heat exchange is completed during the reverse flow of cold water and hot water. In order to increase the heat exchange area and improve the heat exchange efficiency, the distance...

AI Technical Summary

Problems solved by technology

[0002] A large amount of waste hot water in bathing centers, hot springs, washing plants, printing and dyeing plants, etc., is usually discharged directly due to its low temperature, many impurities, and difficulty in recycling, which will not only cause a lot of energy waste, At the same time, it will also cause serious pollution to the environment

[0003] Traditional waste heat recovery heat exchangers mainly have two forms, namely plate heat exchangers and spiral plate heat exchangers; however, both plate heat exchangers and spiral plate heat exchangers are composed of layers The corrugated metal plates are stacked, and the heat exchange is completed during the reverse flow of cold water and hot water. In order to increase the heat exchange area and improve the heat exchange efficiency, the distance between the plates is small, which is easy to cause blockage and high maintenance costs; in addition, the driving force of heat exchange From the temperature difference between cold and hot water, the temperature of the above-mentioned wastewater is low, and the existing heat exchanger cannot recover and reuse the waste heat well; therefore, its structure needs to be further improved

Images