Automatic feeding transport System For powder mixer with screw conveyor

Application and introduction

For large scale PVC product factory, advanced automatic weighing compounding conveying system is essential,traditional mixing method is that people weigh and batch material manually, then move the mixed material to extruder also manually, this old way just fit for the small factory, and has many defects:

1. Artificial mixing is easy to make a mistake, because this is a repetition work, so worker is tired easily. the weighing precision is not assured.

2. Labour intensity is large, human cost is high from long term view.

3. Chemical raw material harms the worker's health.

In order to solve these problems, our company design this PVC automatic mixing, weighing ,conveying system which the computer can automatically control weighing and batching, and feeding to extruder. This mixing system consist of automatic weighing, after weighing, convey the material into the mixer unit, than use the air-operation pipe line transport the mixed material to extruder. The advantage of PVC mixing system:

1. Automatic weighing controlled by computer, that improves the accuracy and efficiency of burdening, and reduces the chemical damage to worker.

2. The air-operation pipe line transportation reduces the cost of worker, and increase the production efficiency, and all the material is in the closed pipe, so avoid dust to pollute the factory.

The system is designed for the automatic feeding of multiple extruders. The storage and transportation of materials are carried out in closed stainless steel containers and pipes. Some dust removal measures are taken to effectively prevent dust pollution and keep the workshop clean. The control system is controlled by imported PLC, and the main electrical components are imported famous brand products to ensure the long-term, reliable and efficient operation of the whole system. The control system can automatically or semi automatically complete the whole feeding process. The simulation screen can display the operation status of each part of the system in real time through the indicator light, and can flash the alarm for the failure part to attract the attention of the operator. The extruder adopts the combination of vacuum feeding and screw feeding. The silo is equipped with two level meters. When the lower level meter shows that there is a lack of material, the feeder will work automatically to fill the material in the large silo to the small silo. When the upper level meter shows that the material is full, the feeder will stop working and temporarily stop feeding. In order to ensure the normal and continuous operation of the extruder, a 50L small hopper is added above the extruder and a level gauge is equipped respectively. If any one of the six level gauges shows a lack of material, the screw feeder will automatically start to work and start feeding until all the six level gauges light up to show that the material is full, and the screw feeder will stop working; if one level gauge is short of material, the screw feeder will start working again, The whole feeding process runs automatically under the control of PLC.