China's centrifuge independent innovation can be improved, common fault analysis

　　Under the background of globalization, many manufacturing enterprises in China have begun to carry out innovative work, accelerate their way out and push their products to participate in international competition For example, China's centrifugal equipment independent innovation ability is constantly strengthening, is from "Made in China" to "Created in China" forward Many centrifuge products have been greatly improved continuous operation capacity, equipment capacity is better optimized, adaptability is enhanced, and equipment consumption is also reduced, more energy-saving and environmental protection
Although China's centrifugal equipment market has been greatly developed in these years, but compared with foreign advanced centrifugal equipment, domestic centrifuge equipment still exists in the independent innovation ability, equipment more or less there are noise vibration, speed instability and other issues In addition, china's centrifugal equipment development started late, equipment manufacturing to the middle and low-end products mainly, lack of products, the overall industry still exists the situation of low-end competition
A centrifuge is a mechanism that uses centrifugal force shimileton to separate the components of a liquid from a solid particle or a mixture of liquid and liquid Currently used in chemical, petroleum, food, pharmaceutical, mineral processing, coal, water treatment and shipping and other departments Among them, high-speed centrifuges are conventional laboratory centrifuges, more widely used in biological, chemical, pharmaceutical and other scientific research education and production departments, suitable for microsample rapid separation synthesis Below, the author collated some common high-speed centrifuge equipment data, in order to let everyone better understand
High-speed centrifuge main category high-speed refrigeration centrifuges: domestic production of high-speed frozen centrifuges for microcomputer control, directly driven by the strong moment AC variable frequency brushless motor, no toner pollution, can greatly extend the service life, but also with a large-screen LCD display, importenergy-efficient non-fluorine refrigeration system, both high-speed centrifugation, but also low-speed centrifugation, to achieve a multi-functional machine The specific performance in the touch module, digital display, programmable operation, the user can arbitrarily set centrifugal speed, centrifugal time, RCF value and lift speed curve, can store, modify, call centrifugal program and so on
Low-temperature high-speed centrifuge: low-temperature high-speed centrifuge beautiful and practical, generally for the microcomputer control, with touch panel and digital display The centrifuge's intracellular temperature can be reduced below zero degrees Celsius and is used to collect microorganisms, cell fragments, cells, large cellware, sulfuric acid deposits and immune deposits, etc., and is commonly found in various biochemical laboratories
Vertical high-speed high-capacity centrifuges: vertical high-speed high-capacity centrifuges using microcomputer control, can directly set the speed, automatic calculation of RCF values The RCF value can be set directly, automatically converted to speed, the operating parameters can be automatically remembered, the parameters can be modified in operation Generally has a variety of custom program storage functions, with soft brakes, rotor number recognition, overtemperature, overspeed, imbalance and door cover safety protection functions, and display fault information and audible alarms in the display window
Floor-to-ceiling high-speed refrigeration centrifuges: Floor-to-ceiling high-speed refrigeration centrifuges are directly driven without vacuuming and eliminating the hassle of belt change and vacuum system maintenance It can be centrifuged and concentrated on cytoplasm, viral bacteria, chemicals, etc., and is widely used in high-tech fields such as molecular biology and biochemistry
Centrifuge common fault 1, main power indicator light, then should check the degree of wear of the charcoal brush, such as carbon brush wear more than one-third of the total amount, should be replaced in time for the new carbon brush
2, when the main power indicator is not on, check the light fuse and indoor power distribution board fuse is blown, while checking that the power cord is in good contact, such as the fuse should replace the fuse and keep the circuit open
3, should also check the vacuum pump meter and oil pressure indicator sits, such as oil pressure is too high and the host can not start, must check whether the oil road is blocked, especially whether the throttle hole is open, such as not open should be cleaned to make it clear
4, bearing damage or rotation is blocked, check whether due to lack of oil in the bearing or more dirt in the bearing and cause friction almost increased resistance, when the motor does not reach the rated speed, should be promptly cleaned or replaced bearings
5, the surface of the rectifier has a layer of oxides, even burned into uneven or brush and the outer edge of the rectifier can also make the speed drop, should clean up the rectifier and brush, so that it is in good contact
6, such as the rotor coil short circuit or open circuit, can be used to check the meter, re-winding the coil Rotors may be shorted or broken due to metal fatigue, overspeed, overstress, chemical corrosion, improper selection, unbalanced use of transit head and out-of-control temperature, resulting in a ruptured centrifuge tube, sample leakage, rotor damage
Centrifuge maintenance and precautions: 1, centrifuge installation should be based on the performance of the centrifuge selection of cooperative location, the general low-speed centrifuge (desktop) can be placed on a smooth, sturdy table (its base is equipped with rubber suction feet, with the help of atmospheric pressure and the weight of the instrument itself, close to the table)
2, high-capacity low-speed centrifuges and high-speed centrifuges and high-speed refrigeration centrifuges to be placed on a solid ground accordingly, horizontal placement Before choosing the right turn centrifuge work, the load should be balanced, the smaller the weight error, the better, otherwise it will cause severe vibration, damage centrifugal rotors and hinges
3, centrifuge bracket, centrifuge separation bracket must be placed after the centrifuge tube operation, is strictly prohibited empty frame operation
At present, with the development of China's industrial and manufacturing technology, the pharmaceutical industry is also accelerating the transformation and expansion, the increase in the market means that the fierce market competition is near Counter-water boat does not advance or retreat, for this related manufacturing enterprises should also be centrifugal equipment structure, performance, parameters to actively optimize adjustment, improve the separation quality of equipment and production innovation ability, so that its application scope can be further expanded, to the production enterprises to bring more choices, but also bring better quality.