The basic requirements of injection molding are plasticization, injection and molding. Plasticizing is the prerequisite to achieve and ensure the quality of molding products, and in order to meet the requirements of molding, injection must ensure enough pressure and speed. At the same time, due to the high injection pressure, the corresponding high pressure in the mold cavity, so there must be a large enough clamping force. It can be seen that the injection device and the combination mold device are the key parts of the injection molding machine. Pulverizer Machine,Pulveriser Machine,Plastic Pulverizer Machine,Industrial Pulverizer Machine Ningbo Haijing Plastic Machine Manufacturing Co. LTD , https://www.chinahaijing.com
The unit has a designed cooling capacity of 2,187 kilowatts, which is a set of old equipment that is in the "free" state at other plants. The original two sets of low-power refrigeration devices in Polymer Plant II are independent cooling modes, and the cooling capacity is unreasonable. After a comprehensive analysis of various factors, the plant, after scientific demonstration, decided to “activate†this idle old equipment instead of using low-power units.
This technical transformation project involving four production plants in the whole factory is a company-level key project, and only the peripheral pipelines are laid to 320 meters. Starting from the beginning of this year, the plant set out to develop a detailed technical reform program, conduct detailed cost and benefit analysis, determine the feasibility and effectiveness of the program, and use the 2010 overhaul to complete the assembly and disassembly and commissioning of the unit. After the old units were put in place, the plant had intense field operations and maintenance training, and invited experts in the use of the crew to teach on-site. After nearly a month of observation and groping and stand-alone operation, the indicators have reached grid-connected conditions.
After the grid-connected high-power unit has liberated four sets of Type II series screw chillers that have been in service for years of aging, on the basis of ensuring that normal production requires refrigeration, the consumption of water and electricity resources is greatly reduced, and production efficiency is improved. And device operating stability. According to calculations, after the grid connection, this plant can save 1.6 million tons of circulating water annually, save 2 million kilowatt hours, and reduce maintenance costs by more than 100,000 yuan.
On November 4, Daqing Refining & Chemical Co., Ltd. Polymer 2 high-power refrigeration unit completed the entire plant-wide grid-connected operation. It is estimated that the use of this old refrigeration unit can create more than 2 million yuan per year.