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2019 - 05 - 25
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1. How does the Roots blower work?The three-lobe Roots blower is a two-impeller synchronous compression machine. Each three-blade rotor is supported by two bearings, and a pair of synchronous gears are used to keep the relative positions of the two rotors constant. It is a positive displacement blower with forced gas transmission characteristics. As a rotary machine, it has relatively stable working characteristics. There is a small gap between the rotor and the rotor, the rotor and the pump body, and between the rotor and the side cover. Therefore, there is no friction in the working chamber,...
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2014 - 07 - 01
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SINCR C500 inverter in the power line planesI. Introduction  The cable industry is currently towards product diversification, the development of production and a higher level of automation technology. In the cable industry, the most widely used is the pay-off, and the power line planes is one in which the high-tech equipment. Power line planes generally require inverter with PID function, and PID control is bidirectional, that is with a reversing control functions. Currently in the industry applications, only a small number of inverter manufacturers can not add any additional accesso...
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2019 - 05 - 25
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1. IntroductionThe injection molding process is generally divided into the following steps: mold clamping → injection holding pressure → melt rubber feeding → cooling setting → mold opening thimble. The completion of each action has a precise fit of several parameters such as time, pressure, speed, position, etc., that is, the displacement at a certain position has a corresponding pressure and speed, and the pressure and the pressure in different positions and times The speed is variable. At the same time, after each action is completed, a termination signal is sent to the program control...
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2019 - 05 - 25
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Waste-to-energy industry prospectsAt present, China's domestic waste treatment mode is mainly based on sanitary landfill.There are two main types of domestic garbage disposal: sanitary landfill and incineration. Sanitary landfill is a comprehensive method based on the principle of natural degradation of waste, using strict scientific management methods to prevent waste from polluting the surrounding environment. The investment cost is low and the requirements for garbage are low; the disadvantage is that the occupied land area is large, and leakage may occur, causing secondary pollution. Waste...
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2019 - 05 - 25
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1. IntroductionAt present, CNC engraving machines have gradually become an essential professional tool for production in various industries. With the development of CNC numerical control technology and high-performance inverter controller and servo drive equipment in various production industries, CNC engraving machine has become the mainstream configuration of today's engraving industry.The spindle system is an important component of the CNC engraving machine, and its performance has a crucial influence on the performance of the CNC engraving machine. As the heart of the spindle system, ...
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2019 - 05 - 25
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1. IntroductionThe air compressor is a device that uses electric energy to compress air as a power source. It is widely used in industrial and mining enterprises. The capacity of the supporting motor is generally large, and most of them are continuously operated all the year round, so the potential for energy saving is great.At present, the common compressors are piston type, screw type and centrifugal type. No matter which working mode, the gas output per unit time of the compressor is certain. At present, the compressor adopts upper and lower limit control or start-stop control, that is...
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2019 - 05 - 25
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1. Analysis of the prospect of frequency conversion of paper machineThe paper industry is one of the basic industries in China. The domestic pulp and paper enterprises are large and widely distributed, and occupy an important position in the entire national economy. It is one of the four major inventions in China. Papermaking machinery consists of raw material preparation, pulping, paper making, reels or flat sheets, and machinery for processing paper and paperboard.According to statistics, China has more than 37.8 million tons of production capacity, single machine production capacity of more...
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2019 - 05 - 25
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First, communication start and stop + communication given frequency case1. Connect the communication line and fault output signal line connected to the air compressor controller according to Figure 1-1.2. P0-17=1, restore the inverter parameters to factory settings.3. Set the following parameters and perform static self-learning of parameters.Function code setting functionF0.07150 maximum output frequency (set according to actual conditions)F0.08150 operating frequency upper limitF2.111 permanent magnet synchronous motorF2.0122 motor rated power (set according to motor nameplate)F2.02150 motor...
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