Long Life EVC Sheet Cooling System / Roller Cooler / Cooling Faster Machine
The composite rubber mixing roller cooling machine mainly has the following types:
1. Water-cooled cooling machine:
- Jacketed water-cooled cooling machine: The mixing chamber wall is a jacket structure, and there are many partitions in the center to divide the jacket into two halves. After the cooling water enters from one side, it circulates in the jacket along the axial direction, and then circulates from the side wall to the other side and flows out. This cooling method can cool the side wall and increase the cooling area, but due to the thick wall, the cooling effect needs to be further improved.
- Drilled water-cooled cooling machine: Many small holes are drilled in the mixing chamber wall along the axial direction to allow the cooling water to circulate along the holes. The cross-sectional area of ​​the drilled hole is smaller than that of the jacket, so the water flow speed is faster, and the hole is closer to the inner wall of the mixing chamber, the thermal conductivity is high, the heat transfer is fast, and the cooling effect is relatively good.
- Roller internal circulation water-cooled cooling machine: There is a special flow channel design inside the roller, and the cooling water circulates inside the roller, directly exchanging heat with the roller surface, and the cooling efficiency is high. Commonly used in rubber mixing production with high requirements for cooling effect, such as the production of some high-precision rubber products.
2. Air-cooled cooler:
- Natural air-cooled cooler: Rely on natural convection air to cool the roller. This cooling method has a simple structure and low cost, but the cooling speed is relatively slow. It is suitable for rubber mixing occasions with low cooling speed requirements and low heat generation.
- Forced air-cooled cooler: By installing fans or blowers and other equipment, air is forced to blow to the surface of the roller to speed up the air flow rate, thereby improving the cooling effect. Compared with natural air cooling, forced air cooling has a faster cooling speed and can meet the production needs of some medium-heat rubber mixing.
3. Oil-cooled cooler:
- Indirect oil-cooled cooler: The oil is cooled in an independent cooling system, and then the cold is transferred to the roller through a heat exchanger. This method can accurately control the oil temperature, thereby ensuring the stability of the cooling effect, and the specific heat capacity of the oil is relatively large, which can absorb more heat, and is suitable for rubber mixing processes with high temperature control requirements.
- Direct oil-cooled cooler: The cooling oil directly contacts the roller surface for heat exchange. This cooling method has a high cooling efficiency, but it has high requirements on the quality and sealing of the oil, otherwise it is easy to cause oil leakage and other problems.
4. Spray cooler: A nozzle is set in the cooling device to spray cooling water or coolant on the roller surface to cool the roller. Spray cooling can make the coolant cover the roller surface more evenly and improve the cooling effect, but it also needs to deal with the recovery and discharge of the coolant.
5. Combined cooler: Combines multiple cooling methods, such as water cooling and air cooling, oil cooling and water cooling. This combined cooler can give full play to the advantages of various cooling methods, improve the cooling effect and adaptability, and meet the cooling needs of different rubber mixing processes.
II. Technical Parameter