Non-return-air classification heat exchange dewatering and air exhaust waste heat utilization relaxation heat setting machine

Abstract

The invention relates to a non-return-air classification heat exchange dewatering and air exhaust waste heat utilization relaxation heat setting machine. An exhaust outlet is formed in the lower portion of a drying chamber, the exhaust outlet is communicated to the outside of a box body through an exhaust tube, an air compensation port in the box body is communicated with a suction port of a fan, an air outlet of the fan is aligned to heat exchangers above the fan, the air outlet above the heat exchangers enters into the drying chamber, an inlet of a high pressure heat exchanger is connected with a steam supply main tube, an outlet of a high pressure drain valve of the high pressure heat exchanger is connected into an inlet of a middle pressure heat exchanger through a first condensate water reuse tube, an outlet of a middle pressure drain valve of the middle pressure heat exchanger is connected into an inlet of a lower pressure heat exchanger through a second condensate water reuse tube, an outlet of the low pressure heat exchanger is connected into a condensate pump through a low pressure drain valve, a preheating air outlet of a new wind preheater is connected into the air compensation port of the relaxation setting machine, and exhaust of the relaxation setting machine is connected into the new wind preheater to achieve indirect heat exchange with new wind. The setting machine can achieve sufficient utilization of waste heat of the exhaust and condensate water, and is high in heat efficiency.

Description

technical field [0001] The invention relates to a relaxation heat setting machine, in particular to a relaxation heat setting machine for non-return air graded heat exchange and water drainage and utilization of exhaust waste heat. Background technique [0002] The post-treatment of polyester staple fiber often uses a relaxation heat setting machine. The inner chamber of the relaxation heat setting machine is equipped with a fan, a heat exchanger and a drying room for drying the product. The air outlets are connected, the air outlet of the fan is aligned with the heat exchanger above, and the air outlet above the heat exchanger enters the drying chamber, and there is an exhaust outlet below the drying chamber, and the exhaust outlet leads to the outside of the box through the exhaust pipe. A manual control valve is installed on the exhaust pipe, and the air return port is also communicated with the suction port of the fan. The fresh air entering the box from the supplementa...

AI Technical Summary

Problems solved by technology

[0003] The shortcomings of this relaxation heat setting machine are: (1) According to different products, there are three levels of steam pressure, but only one steam trap is installed, and the steam trap can only work normally under a certain pressure. , cannot maintain the pressure difference required for normal work, either the displacement is not enough, or the steam leakage is serious

(2) The waste heat of the condensed water discharged by the steam trap needs to be utilized by external users. When there is no suitable user, it will inevitably be emptied and wasted

(3) Pollutants carried by the return air are easily deposited on the heat exchanger, deteriorating the heat exchange efficiency

(4) Even if the waste heat of condensed water is used by flash evaporation, the temperature of the discharged condensed water is still 130°C to 150°C, and the loss of waste heat is large

(5) The waste heat of the high-temperature exhaust air is not utilized, the exhaust air volume is manually controlled, and the discharge volume is highly random

Images