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The Energy Consumption Of Air-jet Looms Is High, Mainly In The Energy Consumption Of The Nozzles
Oct 26, 2017

The energy consumption of air-jet looms is high, mainly in the energy consumption of the nozzles. The air-jet loom manufacturing enterprises have long been on the nozzle of the auxiliary nozzle were studied, using a single hole, porous, inverted cone hole and other shapes, many have been applied in practice, a variety of aperture shape of the auxiliary nozzle have their own advantages. Various innovations in the nozzles (including the main and auxiliary nozzles) and the trachea not only save energy but also improve the weft insertion quality.

With the electronic technology is widely used in the monitoring and monitoring of looms, enterprises have introduced new technologies and new measures of energy saving, such as air jet loom auxiliary nozzle solenoid valve application from the past 4 to 6 auxiliary nozzle configuration 1 electromagnetic Valve to 2 auxiliary nozzle configuration 1 solenoid valve, controlled by the electronic control box solenoid valve order switch, in order to achieve the purpose of air jet thrust. According to the introduction of this new technology alone can save air consumption by 10% to 15%. In the case of an air-jet loom with a 190 cm reed web, an air-jet loom is 0.5 to 0.6 m³ / min, and 48 air-jet looms are equipped with an air compressor of nearly 40 m³ / min, and one 40 m³ / min Compressed air machine to configure a set of tens of kilowatts of the motor.

General 190cm air-jet looms have 24 to 26 auxiliary nozzles, in the weft insertion channel each auxiliary nozzle spacing 70 ~ 80mm, because 4 to 6 auxiliary nozzle configuration 1 solenoid valve, that is 4 to 6 auxiliary nozzle switch Time is the same, so can not save gas consumption. Now there are two auxiliary nozzles equipped with a solenoid valve, only two auxiliary nozzle switching time is the same, which in order to save gas consumption to create the conditions. With the increase in the speed of the loom and the decrease in the number of auxiliary nozzles controlled by each solenoid valve, it is required that the auxiliary nozzle speed is accelerated and there is no high performance and high speed solenoid valve.

Loom in addition to air weft energy consumption, the other institutions of energy consumption is also great, the most important is the beating mechanism. There are two kinds of beating mechanism: crank connecting rod mechanism and conjugate cam beating, the two institutions have their own advantages and disadvantages. 20 years of production practice comparison shows that: these two beating institutions are in line with production requirements. For individual heavy-duty fabric, the use of conjugate cam beating mechanism has its outstanding advantages, while the crank connecting rod mechanism is slightly lacking in this respect. For most products, the two organizations are exactly the same. From the quantitative point of view, air-jet looms use the crank link mechanism of the absolute majority. The rapier loom evolved from the crank connecting rod mechanism to the conjugate wheel beating mechanism. The shuttle loom is not used conjugate cam beating mechanism can not.

Followed by the opening mechanism, regardless of the cam opening or multi-arm openings are large energy consumption of the body. But the same is the cam opening, the negative cam is slightly lower than the positive cam energy consumption. Two kinds of cam openings have their own advantages and disadvantages, the user should choose according to their own circumstances. Multi-arm opening energy consumption than the cam opening. Japan Toyota and Tsudakoma have launched a lifting rod 1 servo motor electronic arm, eliminating the electromagnet, cam, energy consumption is much lower than the existing electronic arm, the adjustment is also very convenient.

Speaking of air-jet looms can not fail to mention the air compressor. Now the domestic enterprises to use the air compressor is not ideal, the compressor efficiency is low, and because the vibration and noise are relatively large, the compressor should be installed in a certain distance from the jet loom workshop, so the pipeline energy loss. Japan's use of air-jet looms are small-capacity air compressor, such as the use of 48 air-jet looms only 4 small-capacity air compressor, three often open a spare, and spare not always stop With four devices in turn turn the boot. It is installed not far from the loom, and some even in the production workshop. From this point of view energy consumption is certainly lower than ours

Air compressor is divided into absolute oil-free and oil-filtered indirect oil-free two. Oil-based air compressor from the operating efficiency, life expectancy, energy consumption is better than absolute oil. 20 years before the enterprises are using absolutely oil-free air compressor. In recent years, many users have to use oil-based air compressor, its price is cheaper than the oil-free air compressor a lot cheaper. And the oil of the air compressor through continuous improvement, first of all to change the varieties of lubricants, the use of oil can be cleaned in addition to oil, if the filter failure, oil splash on the finished fabric, you can in the post-processing Printing and dyeing finishing process to eliminate. There are oil air compressor also has shortcomings, and its lubricating oil has a certain life, to be replaced regularly. At the same time filter oil network should also be cleaned or replaced regularly.

So in recent years, some textile mills began to gradually use more energy-efficient centrifugal air compressor. The principle is driven by the impeller to do high-speed rotation of the gas, so that the gas generated centrifugal force, the flow of gas through the impeller after the flow rate and pressure to improve the continuous production of compressed air, pure oil-free operation, air quality can be achieved Level 1 standard. Its operation is more efficient, so more energy efficient.