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Shanxi Chinalco service company independently solved the technical problem of overhauling the core parts of Dutch pumps for the first time. After more than a week of technical research, recently, Shanxi Chinalco service company independently solved the technical problem of overhauling Dutch pumps for the first time without the assistance and guidance of foreign experts. Up to now, the trial operation of a series of Dutch pumps in the first alumina plant is stable, and all indicators are normal

after more than a week of technical research, recently, Shanxi Chinalco service company independently solved the technical problem of Dutch pump overhaul for the first time without the assistance and guidance of foreign experts. Up to now, until the appearance of microscope and electron microscope, a series of Dutch pumps in the first alumina plant have been tested and operated stably. This sign can be used in the recycled plastic granulator, which is the main processing machine to ensure its good sealing, and will have a large customer group. All indicators are normal in the promotion of products, packaging and organizations

Dutch pump is an imported equipment. With its mature technology and strong transportation capacity, it has always been the key equipment to ensure alumina production. After more than ten years of long-term operation, a series of Dutch pumps in the first alumina plant have encountered problems such as loud noise and excessive vibration, which have become a potential safety hazard affecting the stable operation of alumina production. Due to the high maintenance cost of inviting foreign experts, after many communications with the manufacturer, Shanxi Chinalco industrial service company increased its pressure and independently carried out the replacement of large bearings such as crankshaft connecting rod and box support of Dutch pumps for the first time without the technical guidance of foreign experts

this overhaul is different from the daily warranty maintenance. Because the Dutch pump is different from the domestic pump, the internal structure is unique, the requirements for various technical indicators are strict, and the manufacturer does not provide specific dimensions and technical indicators, while the key and core parts of the Dutch pump need to be disassembled for overhaul, so the technical difficulty can be imagined. Before the maintenance, the technicians at the maintenance construction site search for installation data in advance, collect data from various parties, and be familiar with and make various professional maintenance tools and equipment; During the maintenance process, Shanxi Chinalco Industrial Clothing Co., Ltd. dispatched professional technicians to reasonably arrange the operation time, strictly control the quality of each process such as problem diagnosis, gear and bearing replacement, and strictly observe the process discipline; During the disassembly process, technicians record the technical parameters of each link in detail, inspect parts and components, and analyze and judge problems; In the process of reassembly, the relevant technical process procedures and index parameters of other similar pump bodies were used for reference, and the specific structural values were measured on site to overcome the difficulties of reassembly displacement and incomplete data, and the key technical indicators such as the pre assembly position and clearance of the bearing were accurately calculated, realizing the excellent results of successful and accurate assembly at one time and reaching the standard of all technical indicators. (contributed by Chalco Shanxi)