Combined type countercurrent extraction pot for instant coffee at constant temperature

The embodiment of the invention discloses a combined type countercurrent extraction pot for instant coffee at a constant temperature. An efficient combined type countercurrent extraction pot at a constant temperature is adopted, so that the extraction rate of effective components is high. Through the adoption of the combined type countercurrent extraction pot, the extraction rate of the effective components can be increased by 3-8%. Because the systematic intelligent control is adopted, the product quality is stable, and the defect that differences of products in different batches is overcome. The combined type countercurrent extraction pot is uniform in heating, constant in temperature and easy to control. Extraction of soluble fractions in coffee can be furthest guaranteed without causing waste of raw materials. Slagging off and charging are both controlled pneumatically, so that the time required for charging and slagging off is shortened, and human resources can be saved. One person can control a full group of countercurrent extraction pots for instant coffee at the constant temperature. An electron concentration instrument is adopted, so that the extraction state of the materials can be displayed visually, situations of the coffee materials, that the subsequent concentration time of evaporators is long and steam is consumed due to excessive extraction, are avoided furthest, and the waste of ground coffee due to inadequate extraction is also avoided.