Views: 5 Author: Huan Machinery Publish Time: 2021-08-20 Origin: Huan Machinery
The extrusion blow molding machine is equipped with a chiller for cooling and cooling, we call it an extruder chiller. Since the extruder is mainly used for various extruded plastic products, such as PE, PP, PVC, ABS, etc., the high temperature generated during the production process will cause difficult demolding and slow molding, so a chiller is required to provide low-temperature cycle freezing Water (5-30°C) is fed to the extruder to shorten the cooling time and improve product quality.
The products produced by the extruder machine include hard pipes, hoses, profiles, glue sticks, automotive glass sealing strips, cables, corrugated pipes, packaging bags, door and window sealing strips, etc. These products are common in our daily lives. Water chiller is inseparable for the production of TM, how do we choose a chiller for the extruder blow mould machine?
First of all, we must confirm whether the customer’s extruder has an open tank. If so, when choosing a chiller, you should use a shell-and-tube or plate-exchange evaporator instead of a tank-coil evaporator. . If there is no sink or pool, you should choose a water tank coil type evaporator.
The second is the selection of the extruder. When selecting a chiller, we must calculate the chiller power based on the temperature of the water in the extruder tank, the amount of water used per hour, and the temperature of the return water. As the heat generated by the extruder in a short period of time is relatively large, in order to ensure the cooling effect, a slightly larger value is generally selected, which can avoid the full-load operation of the chiller and ensure the stability of the cooling.
Then there is the selection of the cooling type of the chiller. Many customer factories are equipped with cooling water towers. In this case, it is better to choose a water-cooled chiller. The water-cooled chiller uses the water tower to dissipate heat and has higher cooling stability; if there is no cooling water tower and the cooling power of the chiller is low, it is recommended Choose air-cooled chillers; users with higher cooling power (such as 40hp, 50hp chillers) should use water-cooled screw chillers with cooling towers for cooling.