Reverse interlock control and protection system for codirectional parallel twin-screw granulation equipment

Abstract

The invention discloses a reverse interlock control and protection system for codirectional parallel twin-screw granulation equipment. The system includes a main machine seat, a main motor, a main coupling, a main transmission box, a cylinder, a twin screw and a granulator head, and also includes a feeding device, an auxiliary agent feed inlet, a feeding monitoring device and an electric control device. The feeding monitoring device is arranged on the feeding device and used for monitoring whether the feeding device has abnormal conditions and outputting a monitoring singal. The electric control device is electrically connected to the main motor, feeding device and feeding monitoring device. The reverse interlock control and protection system for the codirectional parallel twin-screw granulation equipment provided by the invention is added with the feeding monitoring device on the feeding device as a protection device of the codirectional parallel twin-screw granulation equipment. Therefore, when the feeding device has abnormal conditions, the abnormal conditions are fed back to the electronic control device to timely stop the continuous working of a main machine and the feeding device so as to realize the reverse interlock control and protection of the main machine and the feeding device.

Description

technical field [0001] The invention belongs to the field of twin-screw modified granulation equipment, and in particular relates to a reverse interlock control and protection system of co-rotating parallel twin-screw granulation equipment. Background technique [0002] Twin-screw granulation equipment is a common polymer processing equipment that can manufacture materials into specific shapes of plastics. In order to improve the performance of plastics, the original pure plastics are usually mixed in the twin-screw granulation equipment. On the basis of plasticizing modification in the composition of functional threaded components, additives (such as glass fiber, calcium carbonate powder, Powder, etc.), and then better improve the performance of plastics. The manufacturer uses the feeding device on the existing twin-screw granulation equipment to supply the material to the main machine of the twin-screw granulation, and then adds additives such as glass fiber into the mai...

AI Technical Summary

Problems solved by technology

However, the existing twin-screw granulation equipment only requires that the feeding device cannot be started when the actuator of the main machine is not working, and cannot protect the main machine when the feeding device fails, resulting in the main machine still working without normal feeding. The main reason is that there is no automatic monitoring function on the feeding device, relying on manual monitoring, when the feeding device is abnormal or no material is added to the main machine, the main machine will run idling or continue to add glass fiber and other additives into the main machine actuator , causing the main engine to run idly is the direct friction between the screw and the cylinder or filled with glass fiber or other additives, the direct friction between the screw and the cylinder accelerates the wear of the machine and shortens the service life of the machine, or the temperature of the glass fiber or other additives is different from that of the main engine. Under the double action of the twin-screw rotation friction, solidification and other conditions will occur, which will easily cause the twin-screw in the host to be stuck, resulting in twisting loss between the transmission mechanism and mechanical failure, causing major losses and affecting the production of plastics

[0003] Therefore, in view of the above problems, the original one-way host control feeding mode can not meet the protection of the twin-screw granulation equipment only by manually monitoring the feeding device.

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