In view of the roller press exception handling practices

In view of the roller press exception handling practices - 2020 12 - 15 xuan yong line ( Zhumadian city yi tongli cement co. , LTD. ) A, problems of a company's cement grinding station of the annual output is 1. 2 million t, adopted & Phi; 1. 7 m× 1. 4 m roller press grinding system of cement squeeze. Loop bucket adopts 2 & times; 132 kw electric power transmission. One day in May, 2015, the interface display cycle bucket current (central control room The sum of double motor current) About 285 a, when the roller press plate position to regulate the flow of material is not high, roller press. Roller press abnormalities compared with normal production parameters are shown in table 1. By comparison with two sets of data in table 1, the roller press didn't ever under capacity is big. But circulation bucket current is higher than in the past. Based on experience judgement is roller press side platens material caused by leakage, but during the cement production and sales busy season, cement stocks is not much, can not stop easily separate processing rolling mill side platens leakage problem of material. Inspection work of equipment inspection with infrared temperature measuring gun when measuring follow bucket two hydraulic coupling temperature detection, high temperature of 67 ℃, low 32 ℃. Found this abnormal situation, in the transformer room circulating cycle in the bucket distribution cabinets with table card directly bucket of two motor current, the result is close to 200 a, low of less than 100 a. Conclude that one of the two motor overload operation, and the other a no-load running. For motor and other safety equipment to stop check. Examination showed a side of low current, low temperature of the hydraulic coupling and motor connection all nylon rods fracture. Second, the analysis of the causes and solutions to the combined grinding system, production flow chart shown in figure 1. Nylon rods aging, ability to withstand stress is the main cause of the fracture. Nylon rods after fracture, circulation bucket depend on one side of the motor drive, the overload operation, another motor idling, on both sides of the motor current and temperature vary widely. Is controlled from the data, and the rolling machine running side platens is similar to the material leakage, it is easy to misinterpret leakage for roller press side platens. Again after replace the nylon rods, boot debugging, test the power distribution ark card on both sides of the motor current, the results on both sides of the current. Continual production, smooth operation, such as grinding machine cycle around bucket current 270 a, roller press plate a little higher than before, to regulate the flow of material circulation increase, current is reduced, the issue is resolved. Three, summarize the experience with this problem, in the next stop, the widget testing also need to pay attention to, especially the small parts easy to aging, change regularly, so as to avoid unnecessary losses. At the same time, the process of production to strengthen the inspection, found the problem after the analysis of the reason from multiple angles, find the right reason, clear direction. Source: the cement engineering 2015, 06