Cooling device for PP pipe machining

By combining multiple cooling water tanks and air blowing tanks on the PP pipe production line, the quality problems caused by rapid cooling of pipes in the existing technology are solved by using warm water to gradually cool down the pipes and blowing air with a fan. This achieves a gentle, stepped cooling effect and improves the impact resistance of the product.

CN224408428UActive Publication Date: 2026-06-26HUBEI KINGBULL PIPE IND
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Patent Information

Application Number
CN202521527799.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-22
Publication Date
2026-06-26
Estimated Expiration
2035-07-22

AI Technical Summary

Technical Problem

Existing PP pipe cooling devices cause the pipes to cool down rapidly, resulting in excessive shrinkage, which affects product quality, especially the accumulation of internal stress and a decrease in impact resistance.

Method used

The design employs a combination of multiple cooling water tanks and air blowing channels. The cooling water tanks are arranged sequentially along the pipe conveying direction, using warm water to gradually lower the temperature. Combined with the air blowing of the fan, a stepped cooling effect is achieved, and cooling is achieved through pressurization by spiral blades and spraying water film through the water trough.

Benefits of technology

This achieves gentle, stepped cooling of the pipes, avoiding product quality issues caused by rapid cooling and improving impact resistance and overall quality.

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Abstract

The utility model discloses a cooling device for PP (polypropylene) pipe processing, which comprises a plurality of cooling water tanks arranged along a straight line and air blowing tanks arranged on the cooling water tanks corresponding to the downstream conveying side of a pipe, a fan is embedded on the air blowing tanks, an isolation hood is arranged at the top of each cooling water tank, a water flowing tank positioned above the pipe is fixed in the isolation hood, and the water flowing tanks are communicated with the air blowing tanks. And each cooling water tank is correspondingly provided with a pressurizing cylinder. The multiple cooling water tanks are arranged in the pipe production and conveying direction, water in the cooling water tanks close to the pipe conveying upstream is in contact with pipes early, so that the temperature is high, the temperature of the pipes is gradually reduced later, and the water temperature in the corresponding cooling water tanks is also gradually reduced, meanwhile, the blowing grooves are formed, and water films are formed on the surfaces of the pipes after water cooling. And the draught fan blows air to achieve a better air cooling effect, the two cooling modes are matched with each other to cool the pipe, and the purpose that the pipe is gradually cooled in a stepped mode is achieved.
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