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Anonymous users2024-02-06The main parameters of roots blower in meltblown nonwovens production are: air flow (air volume) and system passive pressure (air pressure) in the drafting channel of meltblown equipment. In actual operation, the roots blower model should be selected according to different requirements, such as the melt index of PP material, the modulus and number of groups of spinnerets, the running speed of the production line, the width and other parameters to calculate the air volume and wind pressure requirements.
According to the successful application practice of Jingong roots blower on more than 100 meltblown non-woven equipment, it can be concluded that the power demand of the roots blower supporting the meltblown non-woven production line ranges from 11kw to 90kw, the actual passive pressure is generally around, and the air flow demand of the drafting channel is between. Meltblown equipment manufacturers can select roots blowers according to the actual needs of their customized equipment.
As for the question of why the roots blower was replaced, the market generally knows more about the air compressor and less about the roots blower, but many meltblown cloth manufacturers have replaced the roots blower.
1. The air compressor or roots blower is an air source equipment that provides high-pressure hot air flow in the manufacturing process of meltblown cloth, but the air compressor relies on the piston to compress the air flow in a closed cavity, and the piston and the casing should be lubricated with lubricating oil, or it will not be overheated and burned, and then the oil will be filtered after the gas comes out, but only most of the oil mist can be filtered, and a small amount of oil mist will be sprayed out with the air, and the molten polymer will form a meltblown cloth. There will definitely be an oil mist smell on this meltblown cloth. In addition, the pressure of the air compressor is more than 100kpa-10000kpa, which is too high for meltblown cloth and needs to be used under pressure.
2. The roots blower works like this, using the small gap between the casing and the impeller to force the air out, and there is no lubricating oil in the cavity, so the output air does not contain oil, and the meltblown cloth sprayed out does not contain impurities and no peculiar smell. The pressure range of roots blower is 10-100kpa, and the general optimal meltblown cloth pressure requirement is because it is just right for meltblown machine. Moreover, the efficiency is much higher than that of the air compressor under the low pressure condition below 100kpa, and its simple internal structure is also more convenient to maintain than the air compressor.
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Anonymous users2024-02-05The width of meltblown cloth of regular manufacturers is generally 1600mm, 2400mm, 3200mm, and the specifications of Entuobo air suspension centrifugal blower are generally 90kw, 110kw, and 132kw. However, after the beginning of the epidemic, there were many small machines with a small width of meltblown cloth, only a few tens of centimeters, and fans were generally only 15kw or 13kw.
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Anonymous users2024-02-04Replacing roots blowers is a long-term solution for the meltblown industry, otherwise the cloth will not meet high standards and will not be sold at a good price.
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Anonymous users2024-02-03Roots blower as melt-blown cloth equipment air source equipment: mainly for the melt-blown cloth production line to provide high-pressure air flow to blow out the molten polypropylene, here the air volume and pressure stability of the air source equipment, if the roots blower pressure is generally within 98kpa, generally 70-80kpa is enough, there is no need to pursue too high pressure, different output production lines need to be equipped with different air volume fans.
Practice has proved that roots blower is the most economical and stable melt-blown air source equipment. The air compressor is too high pressure, and the second is that the working process needs oil lubrication, even if the air compressor known as "oil-free" is only added to the inside, there will still be a small amount of oil mist sprayed with the airflow, resulting in the smell of meltblown cloth, and the smell of making a mask is obvious, resulting in the detection not meeting the standard. Judging from the situation of the 250 production lines supporting Jingong to customers, more and more production lines are replacing air compressors with roots blowers.
Yes, CHQ can help with drawings.
**Depends on production volume.
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