/ep_edm/en/contect_1183.html SHINI PLASTICS TECHNOLOGIES, INC.

Experience Sharing

2017 Quarter 3 Issue 32

A Case Study on Central Conveying System

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Nowadays, the plastic industry in traditional developing model faces many challenges such as the rising labor cost, commodity price and recruitment difficulty. Therefore, Chinese economic structure needs to be optimized and upgraded. Only through accelerating its transformation and upgrading, can a company develop better and faster. The deployment of automatic conveying system can greatly promote the development of plastic industry.



A pipe company in Jiangxi province specializes in producing and processing various pipes such as power protection pipe, water supply pipe, communication pipe, MPP, PE, PVC, MPP pipes, and it has a comprehensive scientific quality managing system. This time, a central conveying system which consists of 3 extruding lines, 9 vacuum hoppers and an 800T IMM was planned. The customer often uses particle raw materials such as PP and PE, etc, and the quantity of raw materials used in workshop reaches 20 tons per day. The customer owns 3 SHD-100, 7 SHD-200 which are used to do ordinary drying. On the top of the dryer, SMH-24L vacuum hoppers are installed and the vacuum breaker is installed above the main vacuum pipe. A rubber diaphragm is used to control the air flow by opening and closing the flow path.



A central material distribution station (SMDS-3-7-2.5) and 3 MST-400 are put in the conveying room, and on the bottom of each MST-400, a SBU-160-63-V is installed. Considering that an IMM is 100m away from the conveying room and it has large throughput, 2 roots blowers (SRB-100-V) are applied, which feature stable air flow, small pressure change and low energy consumption; its alternating working mode can prevent motor break down; the two Root blowers work with a SCSF-200-F-E, which adopts reverse cleaning after each material suction, avoiding filter blockade; equipped with accumulator and overpressure protection; dust can be collected to protect high pressure blower.



We adopt PLC and 10.4 inches color HMI 12-station central controller station (SCCS-100-G-C-10.4) to monitor the whole conveying system. Each IMM is connected to a single pipe to ensure smooth operation and eradicate material blocking. Since the completion in last month, no break down caused by design or equipment malfunction has been found, and the customer spoke highly of the work efficiency of this system. In the future we will keep track of its operating status and we will endeavor to refine our conveying system which can be applied in this kind of industry.