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Flexible filter felt and its preparation method
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A filter felt and flexible technology, which is applied in the field of flexible filter felt and its preparation, can solve the problems of low strength of filter material, large damage to fibers and base cloth, and short service life, so as to improve the strength in warp and weft directions, prolong the service life, reduce The effect of material loss
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Problems solved by technology
This processing method has great damage to the fiber and base cloth, the strength of the filter material is low, and the service life is short
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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[0060] The dust layer 1 adopts 2D×60mm polyphenylene sulfide fiber (ie PPS fiber), where D is the fiber diameter, and is made into a thin fiber net by air-laying, and its weight per square meter is 170 grams.
[0061] Step 2: Prepare the bottom layer 3
[0062] The bottom layer 3 adopts 2D×60mm PPS fiber, which is made into a thin fiber net by air-laying, and its weight per square meter is 170 grams.
[0063] Step 3: Prepare base cloth layer 2
[0064] The base fabric layer 2 is woven from PPS filaments with a diameter of 2D, with a weight per square meter of 130 grams, a warp density of 120 threads / 10cm, and a weft density of 96 threads / 10cm.
[0065] Step 4: Connect and reinforce
[0066] Place the dust-facing layer 1 and the bottom layer 3 on both sides of the base fabric layer 2, and carry out spray hooking and reinforcem...
Embodiment 2
[0082] [Example 2] Preparation method of glass fiber flexible filter mat (inorganic fiber)
[0083] Step 1: Prepare the dust layer 1
[0084] The dust-catching layer 1 adopts glass fibers of 5 μm×60 mm, and is made into a thin fiber net by air-laying, and its weight per square meter is 220 grams.
[0085] Step 2: Prepare the bottom layer 3
[0086] The bottom layer 3 adopts glass fibers of 5 μm×60 mm, and is air-laid to make a thin fiber net with a weight of 180 grams per square meter.
[0087] Step 3: Prepare base cloth layer 2
[0088] The base fabric layer 2 is woven from glass fiber filaments with a diameter of 5 μm, the weight per square meter is 380 grams, the warp direction density is 60 threads / 10cm, and the weft density is 50 threads / 10cm.
[0089] Step 4: Connect and reinforce
[0090] Place the dust-facing layer 1 and the bottom layer 3 on both sides of the base fabric layer 2, and carry out spray hooking and reinforcement with spunlace equipment, of which 5 spu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention relates to a flexible filter felt, which contains from outside to inside a dust-catching layer formed by cross lapping of at least one fiber, a base cloth layer formed by cross lapping of one or two fibers and a bottom layer knitted by at least one fiber filament. The dust-catching layer and the bottom layer are formed by an air laying mode are arranged at two sides of the base cloth layer. The three layers are intertwined and reinforced by high-speed current. A preparation method of the flexible filter felt comprises the following steps in order: preparing the dust-catching layer, preparing the bottom layer, preparing the base cloth layer, intertwining and reinforcing, drying, and carrying out postprocessing. According to the flexible filter felt provided by the invention, the damage to the fibers and the base cloth is minimized, the warp and weft strength is remarkably raised, the service life of the flexible filter felt is further prolonged, and its practical application effect is good.
Description
technical field [0001] The invention relates to a filter felt, in particular to a flexible filter felt used in the field of dust removal and a preparation method thereof. Background technique [0002] In the field of flue gas dust removal, due to the high ambient temperature, complex composition and strong corrosion, the requirements for the filtration accuracy and use of filter felt are very high. With the further improvement of national environmental protection standards, especially for industries with serious pollution such as steel, electric power, cement, and waste incineration, the emission concentration of dust is required to be lower and lower. At present, the application proportion of bag type dust removal technology in the field of flue gas dust removal is getting higher and higher, and at the same time, the core component of bag type dust collector - filter material has higher requirements for use. Most of the existing filter materials are produced by the rigid a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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