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Air filter

An air filter and filter element technology, which is applied in the fields of dispersed particle filtration, chemical instruments and methods, and dispersed particle separation, can solve the problems of low filtration efficiency, small dust holding capacity and large resistance, and achieve high filtration efficiency and dust holding capacity. The effect of large volume and low resistance

Inactive Publication Date: 2015-11-25
ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of low filtration efficiency, large resistance and small dust holding capacity at the same time, and provide an air filter with low resistance and large dust holding capacity for efficiently filtering PM2.5 particles

Method used

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Embodiment 1

[0047] Provide a PM2.5 air filter, the net size of the windward side is 595mm*625mm, and the rated air volume is 2000m 3 / h, head-on wind speed 1.5m / s, design efficiency 90%, initial pressure loss ≤ 40Pa, dust holding capacity 600g when 2.5 times the initial pressure loss.

[0048] The filter adopts the combined structure of coarse-effect non-woven fabric and high-efficiency filter element: the thickness of coarse-effect non-woven fabric 1 is 15mm, the weight efficiency is 60%, the initial pressure loss is 12Pa at 1.5m / s, and the dust holding capacity at 2.5 times the initial pressure loss ( ISOA2 dust) 850g / ㎡; the thickness of the non-woven fabric used in the high-efficiency filter element 2 is 0.5mm, and the filtration efficiency of 0.5μm air dust is 92.5% at a wind speed of 0.08m / s, and the pressure loss is 10Pa.

[0049] The non-woven material used in the high-efficiency non-woven fabric filter element 2 is polyester. After the polyester non-woven fabric is reciprocally pl...

Embodiment 2

[0053] Provide a PM2.5 air filter, the net size of the windward side is 595mm*625mm, and the rated air volume is 2000m 3 / h, head-on wind speed 1.5m / s, design efficiency 95%, initial pressure loss ≤ 70Pa, dust holding capacity 800g when 2.5 times the initial pressure loss.

[0054] The filter adopts a three-layer combination structure of a layer of coarse-effect non-woven fabric, a layer of medium-efficiency non-woven fabric and a high-efficiency filter element: the thickness of coarse-effect non-woven fabric 1 is 15mm, the weight efficiency is 50%, and the initial pressure loss is 1.5m / s 12Pa, 2.5 times the initial pressure loss, the dust holding capacity is 700g / ㎡; the thickness of the medium-efficiency non-woven fabric 5 is 10mm, the weight efficiency is 70%, the initial pressure loss is 18Pa, and the capacity is 2.5 times the initial pressure loss at 1.5m / s. The dust volume is 400g / ㎡, and the thickness of the filter material used in the high-efficiency filter element 2 is ...

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Abstract

The invention relates to an air filter with advantages of high efficiency, low resistance and large dust containing capacity. The air filter is capable of filtering PM2.5 particles with high efficiency, and comprises at least a layer of coarse and / or immediate non-woven fabrics and a pleated non-woven fabrics filter core. A method for producing the air filter comprises the following steps: paving a layer of coarse non-woven fabrics on a layer of high efficiency non-woven fabrics filter core with reciprocated pleating and interrupt gluing, or paving a layer of immediate non-woven fabrics between the coarse non-woven fabrics and the high efficiency non-woven fabrics filter core, and covering the peripheral part by a frame. The filtering efficiency of the air filter is more than or equal to 90% for the air dust particle with diameter being more than 0.5 mum, pressure loss at initial stage under condition of face velocity being 1.5m / s is less than 60 Pa, and dust containing capacity of a filter when pressure loss at initial stage is 2.5 is greater than or equal to 1000 g / m<2>.

Description

technical field [0001] The invention relates to an air filter and a preparation method thereof, in particular to a PM2.5 air filter with low resistance, high efficiency and large dust holding capacity and a preparation method thereof. technical background [0002] Since the severe smog broke out in Beijing in October 2011, PM2.5 began to enter the attention of the Chinese public. Subsequently, the country issued a newly revised "Ambient Air Quality Standard", which added content such as the average concentration limit of PM2.5, and added real-time monitoring of PM2.5. However, the smog weather is becoming more and more rampant, the air quality has dropped sharply, and the pollution has spread from the Beijing-Tianjin-Hebei region to the south of the Yangtze River. came severely affected. In addition to the lengthy PM2.5 treatment, people urgently need air filtration and purification products that can effectively filter PM2.5 to reduce the intrusion of PM2.5. [0003] Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B32B7/12
Inventor 丁宏广洪贤良
Owner ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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