The spiral precooler is used to cool, clean and disinfect the carcass of poultry after slaughtering and disinfecting, so as to improve the yield of the product.Precooling of poultry carcass has become the most important hygiene link in poultry slaughtering and processing, and it is a control point that must be set up in HACCP. After precooling by spiral precooler, the temperature of poultry carcass can be reduced to below 4 ℃ ~ 7 ℃, which accords with the national poultry processing standards and standards, ensures the quality of cut products, improves the segmentation efficiency and prolongs the shelf life of fresh products. 

The upper stepped poultry carcass spiral precooler adopts a number of patented technologies, such as large capacity technology, blade grille technology, upper ladder water level, high discharge port, prevention of poultry retention, wind turbine and so on, which has reached the advanced level in the world. It solves the problems of traditional precooler, such as unilateral accumulation of poultry body, surge, low production capacity, large equipment area, poor precooling effect, etc., and creates favorable conditions for the poultry processing industry to increase output, increase efficiency and transform the old factory. it is the development direction of spiral precooler and the priority choice for large-scale poultry processing enterprises. 

Screw precooler is designed and manufactured in accordance with international standards. The maximum nominal diameter is 3.2m, and the output per line is more than 13500 pieces per hour. It has the advantages of reasonable utilization of overflow water, less water injection, low cold consumption, low operating cost, small occupied area, saving civil construction investment and improving carcass cleanliness. 

Technical parameters of large capacity precooler. 

Nominal diameters 2.1, 2.5, 3.2 meters. 
Effective length: 6, 9, 12 meters. 
Maximum capacity: 13500 pieces per hour. 
Select and configure according to the process.