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Antistatic filtering cloth in surface filtering mode for dust collector

A surface filter and dust collector technology, applied in the field of filter cloth, can solve the problems of not having high softness, high mechanical strength, dust collection performance, adverse effects of dust falling performance, and inability to maintain dust collection performance, etc.

Inactive Publication Date: 2010-09-01
SINTOKOGIO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, for ceramic fibers, glass fibers, synthetic organic fibers, or natural fibers cited in this proposal, since uniform nano-sized fibers cannot be obtained, high dust collection efficiency cannot be expected, and since they do not have carbon nanofibers, Due to its high flexibility and high mechanical strength, it is unavoidable that the fiber coating bonded by adhesives and sintering will gradually break and fall off in the case of repeated dust blowing operations for a long period of time. Dust collection performance and dust blowing performance will be adversely affected, making it impossible to maintain high dust collection performance

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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  • Antistatic filtering cloth in surface filtering mode for dust collector
  • Antistatic filtering cloth in surface filtering mode for dust collector
  • Antistatic filtering cloth in surface filtering mode for dust collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032](Preparation of cylindrical filter cloth based on a mixture of carbon nanofibers and organic binders)

[0033] As the carbon nanofibers, use CNT aqueous dispersion product "Mikoku Pigment Co., Ltd., product name: CNTDW-80, solvent: water, CNT concentration: 11.5% by weight, "CNT after use" (Showa Denko Co., Ltd., trade name: VGCF, Fiber diameter: 150nm, length: 10-20μm)", as an organic binder, an aqueous solution of shellac resin (manufactured by THE JAPAN SHELLAC INDUSTRIES Co., Ltd. , product name: SB-25, solvent: water, shellac resin concentration: 23.5% by weight, borax 5.5% by weight), with above-mentioned nano-carbon fiber, organic binder and ion-exchanged water, with CNT solid content: shellac resin The ratio of solid content: ion-exchanged water = 2.0:0.1:97.9 was compounded. Then, mixing was performed at 11000 rpm for 5 minutes using a homogenizer (manufactured by IKA, trade name: ULTRA-TURRAXT25) to obtain a mixed liquid (1 g of the mixed liquid contained 20 m...

Embodiment 2

[0036] (Preparation of cylindrical filter cloth based on a mixture of carbon nanofibers and inorganic binders)

[0037] With the CNT aqueous dispersion product (the same raw material as embodiment 1) as carbon nanofiber, the amorphous silica aqueous solution (manufactured by Grandex Corporation, trade name: FJ294, solvent: water, amorphous silica) as inorganic binder Concentration: 37% by weight), and ion-exchanged water were mixed at a ratio of CNT solid content:amorphous silica solid content:ion-exchanged water=2.0:0.1:97.9. Then, mixing was performed at 11,000 rpm for 5 minutes using a homogenizer to prepare a mixed liquid (20 mg of CNT is contained in 1 g of the mixed liquid). The mixed solution at 120g / m 2 The treatment capacity is sprayed on the polyester needle-punched non-woven fabric (weight per unit area 600g / m 2 ) on the filter surface side (singeing treatment surface), and then dried at 120° C. for 1 hour. The dried non-woven fabric is sewn into Cylindrical ty...

Embodiment 3

[0039] (Preparation of cylindrical filter cloth in which carbon nanofibers are immobilized by melting nonwoven fabric)

[0040] A CNT water dispersion (the same raw material as in Example 1) and ion-exchanged water as carbon nanofibers were mixed at a ratio of CNT solid content: ion-exchanged water = 2.0:98.0. Then, mixing was performed at 11000 rpm for 5 minutes using a homogenizer to obtain a dispersion (20 mg of CNTs are contained in 1 g of the dispersion). The dispersion is 120g / m 2 The treatment capacity is sprayed on the polyester needle-punched non-woven fabric (weight per unit area 600g / m 2 ) on the filter side (singeing treatment side), dry at 120°C for 1 hour. Then, the non-woven fabric is crimped with a heating roll controlled at 250°C, and after cooling, it is sewn into a Cylindrical type to obtain cylindrical filter cloth.

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Abstract

The invention provides an antistatic filtering cloth in the surface filtering mode for a dust collector. In a filtering cloth for a pulse blow swiping-off dust collector, the filtering cloth for the dust collector, which has numerous dust leakage after swiping off the dust, higher average outlet dust concentration, poor ventilation and dust swiping off performance and bad antistatic performance, is needed to be improved. The side of a soft material filtering surface made of fiber filtering cloth base materials such as non-woven fabric filtering cloth and the like used in the pulse blow swiping-off dust collector is laminated with a micro fine fibre layer formed by a nano carbon fiber with the conductivity, thereby the filtering cloth in the surface filtering mode for the pulse blow swiping-off dust collector, having excellent dust collecting performance and antistatic performance can be provided.

Description

technical field [0001] The invention relates to a filter cloth in a surface filter dust collector. Background technique [0002] Among the production units of dust collectors in Japan, more than 75% are bag filters. Among them, the popularization of the pulse-jet blow-off bag filter is the most remarkable. Because the pulse-jet blow-off bag filter can increase the filtration speed, the device can be miniaturized, the installation area is small, and there is no dust blow-off mechanism. It has a simple structure and the like without a movable part, and is generally economical. In bag filters of this type, synthetic fiber nonwoven fabrics such as polyester are mainly used, and the raw material webs used therein are mostly fibers with an average denier (Denier, about 15 μm). If fine denier fibers are used in the raw material net, although the dust collection performance can be improved, when the dust contains particles, the filter cloth will be clogged, resulting in excessive ...

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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Application Information

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IPC IPC(8): B01D39/08B01D46/04
Inventor 后夷光一竹内聪
Owner SINTOKOGIO LTD
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