CN207169268U

CN207169268U - A kind of dedusting filtering bag of double-decker

Info

Publication number: CN207169268U
Application number: CN201720746646.3U
Authority: CN
Inventors: 黄斌香; 顾榴俊; 孙玲玲
Original assignee: Jiangsu Jinyou New Material Co Ltd
Current assignee: Jiangsu Jinyou New Material Co Ltd
Priority date: 2017-06-23
Filing date: 2017-06-23
Publication date: 2018-04-03
Anticipated expiration: 2027-06-23

Abstract

The utility model discloses a kind of dedusting filtering bag of double-decker, dedusting filtering bag includes sack and bag body, Nomex/the non-woven fabrics of sack and bag as the laminating polytetrafluoroethylmicroporous microporous membrane of lateral surface, the polytetrafluoroethylmicroporous microporous membrane of the laminating Nomex/non-woven fabrics lateral surface in dedusting filtering bag has double-layer structure, in shifting to install between the micropore of two layers of polytetrafluoroethylmicroporous microporous membrane on Nomex/non-woven fabrics, the link position of sack and the bag body is laminating by hot blast and forms one.The utility model improves the operating efficiency for making dedusting filtering bag, while improve the efficiency of dust collection of dedusting filtering bag again by improvements over the prior art.

Description

A kind of dedusting filtering bag of double-decker

Technical field

Environmental-protecting dust-removing filter bag is the utility model is related to, more specifically to a kind of dedusting filtering bag of double-decker.

Background technology

At present, apply to the environment friendly dedusting filter bag of coal-burning power plant and garbage burning factory typically all using terylene needled felt, Polyphenylene sulfide Nomex, aramid fiber Nomex or fiberglass woven are weaved cotton cloth or terylene spun-bonded non-woven fabrics etc. makes.Filter bag interface uses Three pins sew, and the diameter of suture needle is about 0.5~2mm, removes the diameter of sewing thread, and the diameter of each pin hole is calculated with 0.1mm, often Individual pin hole area is then 0.00785mm².And PM2.5 dust average grain diameter is 2.5 μm, as 0.0025mm, projected area is 0.00000491mm²That is, can be penetrated simultaneously by 1599 PM2.5 dust simultaneously on each pin hole area, and one Individual bore is 130mm, long 6000mm dedusting filtering bag, and bag body is sewed using three pins, sack using the sewing of four pins, bag body suture needle Density is 84 pins/100mm, and 6000mm general filter bag then has 5040 pin holes, the filter bag of 130mm bores, its sack Zhou Changwei 408.2mm, sack pin density are 80 pins/100mm, and whole sack then there are about 326 pin holes, and whole above-mentioned filter bag, which amounts to, there are about 5366 pin holes, total pin hole area are 42.12mm², 8.58x106 PM2.5 dust can be allowed to pass through simultaneously.

In existing technology, as Patent No. ZL 201410522907.4 discloses a kind of pin-free dedusting filtering bag Preparation method, including the filter bag sewed by the Nomex or non-woven fabrics of the laminating polytetrafluoroethylmicroporous microporous membrane of dust-collecting face, bag body are adopted Sewed with three pins, sack is using the sewing of four pins, the characteristics of preparation method disclosed in patent No. ZL201410522907.4 The micropore band of hot pressing cladding one side sintering sizing on the sewing needlework of filter bag, micropore band is covered in bag body and the pin of sack is sewed on, To improve filtering accuracy at the pin seam of sewing filtering bag；Its described hot pressing temperature be 400~1000 DEG C, laminating pressure be 0.2~ 1MPa。

In technology disclosed above, bag body and the sack position of dedusting filtering bag are adopted sew with a needle and thread and be connected after, then use One layer of micropore band hot pressing cladding is covered on sewing pinprick, such manufacture craft there is it is following the defects of：

Micropore band, hot pressing cladding micropore band etc. are made with material and because of increase micropore band, hot pressing cladding micropore 1. adding Sequence increase in technique road caused by band, have impact on the increase for making dedusting filtering bag cost of manufacture, overall operating efficiency on the contrary Therefore it is low；

2. the cost of dedusting filtering bag integral manufacturing is added without doubt, it is time consuming to take manpower；

3. add the probability for making dedusting filtering bag defective products.

Utility model content

For drawbacks described above present in prior art, the purpose of this utility model is to provide a kind of dedusting of double-decker Filter bag, by improvements over the prior art, the operating efficiency for making dedusting filtering bag is improved, while improve dedusting filtering bag again Efficiency of dust collection.

To achieve the above object, the utility model adopts the following technical scheme that：

A kind of dedusting filtering bag of double-decker, dedusting filtering bag includes sack and bag body, sack and bag cover as lateral surface Nomex/non-woven fabrics of polytetrafluoroethylmicroporous microporous membrane is closed, the laminating Nomex/non-woven fabrics lateral surface in dedusting filtering bag Polytetrafluoroethylmicroporous microporous membrane has a double-layer structure, on Nomex/non-woven fabrics the micropore of two layers of polytetrafluoroethylmicroporous microporous membrane it Between in shifting to install, the link position of sack and the bag body is laminating by hot blast and forms one.

Polytetrafluorethylecoatings coatings are also coated with described polytetrafluoroethylmicroporous microporous membrane.

Described polytetrafluorethylecoatings coatings thickness is 5~50 μm.

Described polytetrafluorethylecoatings coatings are ptfe emulsion.

In above-mentioned technical scheme, a kind of dedusting filtering bag of double-decker provided by the utility model, by filter bag Bag body, the junction of sack are directly attached using hot blast is laminating, are eliminated original needlework sewing, are made micropore band and laminating The production process of micropore band, operating efficiency made of filter bag is greatly improved, and double-deck polytetrafluoroethyl-ne is used on the outside of filter bag Alkene microporous membrane structure, improve efficiency of dust collection so that dust emission concentration substantially reduces.

Brief description of the drawings

Fig. 1 is structural plan schematic diagram of the present utility model；

Fig. 2 is along the sectional view in a-a dotted lines direction in Fig. 1.

Embodiment

The technical solution of the utility model is further illustrated with reference to the accompanying drawings and examples.

Incorporated by reference to shown in Fig. 1 and Fig. 2, a kind of dedusting filtering bag of double-decker provided by the utility model, including by outer The dedusting filtering bag 3 that the non-woven fabrics of Nomex 2/ of the laminating polytetrafluoroethylmicroporous microporous membrane 1 in side makes, dedusting filtering bag 3 include sack 301 and bag body 302, the polytetrafluoroethylmicroporous microporous membrane 1 of the lateral surface of dedusting filtering bag 3 has a double-layer structure, as internal layer and Outer layer, in shifting to install between the micropore 101 on inside and outside two layers of polytetrafluoroethylmicroporous microporous membrane 1, the sack 301 and bag body 302 link position 303 is connected by the way that hot blast is laminating, so as to form dedusting filtering bag 3.

Preferably, also it is coated with polytetrafluorethylecoatings coatings 4, polytetrafluoroethyl-ne on described polytetrafluoroethylmicroporous microporous membrane 1 Ene coatings 4 typically use ptfe emulsion so that the advantages that dedusting filtering bag 3 has heat-resistant fireproof, and antiseptic property is preferable.

Preferably, the described thickness of polytetrafluorethylecoatings coatings 4 is optimal between 5~50 μm.

A kind of preparation method of the dedusting filtering bag of double-decker provided by the utility model is made, is comprised the following steps：

S1. one layer of ptfe emulsion is smeared on two polytetrafluoroethylmicroporous microporous membranes 1, coating weight is 0.5~ 50g/m², dried 2~20 minutes at a temperature of 80~200 DEG C, be then placed in baking oven and 1~10 is carried out at a temperature of 200~400 DEG C The sintering sizing of minute, the polytetrafluoroethylmicroporous microporous membrane is 3 D stereo fibrous microcellular structure, and its average pore size is 0.1 ~2.5 microns, the Air permenbility under 127Pa pressure is 2~20L/m².s；

S2. it is a polytetrafluoroethylmicroporous microporous membrane 1 is laminating on the lateral surface of Nomex 2 or non-woven fabrics, then will covering Upper another polytetrafluoroethylmicroporous microporous membrane 1, and be in by being placed between the micropore 101 on two polytetrafluoroethylmicroporous microporous membranes 1 Heterogeneous Permutation, then polytetrafluoroethylmicroporous microporous membrane 1 is overturn together with Nomex 2 or non-woven fabrics, form dedusting filtering bag 3 Shape；

S3. polytetrafluoroethylmicroporous microporous membrane 1 is subjected to electro-blown except processing, electrostatic to be canceled using charge ion wind again Afterwards, two layers of polytetrafluoroethylmicroporous microporous membrane 1 of the upper bag mouth 301 of dedusting filtering bag 3 and bag body 302 is all entered using hot blast laminating technique Row gluing is laminating, and the hot blast temperature of the laminating technique of the hot blast is 400~1000 DEG C, and laminating pressure is 0.2~1MPa.

In addition, according to actual conditions or customer demand, the described thickness of polytetrafluorethylecoatings coatings 4 typically 5~50 μm it Between, the polytetrafluorethylecoatings coatings 4 on inside and outside two layers of polytetrafluoroethylmicroporous microporous membrane 1 can be consistent with thickness, and or it is inconsistent, And caused according to the variable thickness of specific polytetrafluorethylecoatings coatings 4, used hot blast temperature, laminating pressure are also adjusted accordingly It is whole, it is specific visible：

As embodiment 1, the polytetrafluorethylecoatings coatings 4 of internal layer polytetrafluoroethylmicroporous microporous membrane 1 are 5 μm, outer layer polytetrafluoro The polytetrafluorethylecoatings coatings 4 of ethene microporous membrane 1 are also 5 μm, and hot blast temperature can be at 400~700 DEG C, and laminating pressure can be 0.2 ~0.6MPa.

As embodiment 2, the polytetrafluorethylecoatings coatings 4 of internal layer polytetrafluoroethylmicroporous microporous membrane 1 are 50 μm, outer layer polytetrafluoro The polytetrafluorethylecoatings coatings 4 of ethene microporous membrane 1 are also 50 μm, and hot blast temperature can be at 700~1000 DEG C, and laminating pressure can be 0.6~1MPa.

As embodiment 3, the polytetrafluorethylecoatings coatings 4 of internal layer polytetrafluoroethylmicroporous microporous membrane 1 are 5 μm, outer layer polytetrafluoro The polytetrafluorethylecoatings coatings 4 of ethene microporous membrane 1 are also 50 μm, and hot blast temperature can be at 700~900 DEG C, and laminating pressure can be 0.6 ~0.9MPa.

As embodiment 4, the polytetrafluorethylecoatings coatings 4 of internal layer polytetrafluoroethylmicroporous microporous membrane 1 are 50 μm, outer layer polytetrafluoro The polytetrafluorethylecoatings coatings 4 of ethene microporous membrane 1 are also 5 μm, and hot blast temperature can be at 700~900 DEG C, and laminating pressure can be 0.6 ~0.9MPa.

In summary, the utility model efficiency of dust collection is good, is also applied for filtering the filter bag of PM2.5 dust, due to eliminating Original needlework sewing, several procedures for making micropore band and laminating micropore band so that dedusting filtering bag integral manufacturing is convenient, production Cost is low, and using effect is good.In addition, the utility model also has heat-resistant fireproof, antiseptic property is preferable, gas filtration resistance It is small, the features such as service life is long.

Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate that this practicality is new Type, and be not used as to restriction of the present utility model, as long as in spirit of the present utility model, to described above Change, the modification of embodiment will all fall in Claims scope of the present utility model.

Claims

1. a kind of dedusting filtering bag of double-decker, dedusting filtering bag includes sack and bag body, sack and bag are laminating as lateral surface Nomex/non-woven fabrics of polytetrafluoroethylmicroporous microporous membrane, it is characterised in that the laminating Nomex/nonwoven in dedusting filtering bag The polytetrafluoroethylmicroporous microporous membrane of cloth lateral surface has a double-layer structure, and two layers of polytetrafluoroethylene (PTFE) micropore is thin on Nomex/non-woven fabrics In shifting to install between the micropore of film, polytetrafluorethylecoatings coatings are coated with two layers of polytetrafluoroethylmicroporous microporous membrane, it is described poly- Tetrafluoroethene coating layer thickness is 5~50 μm, and the polytetrafluorethylecoatings coatings are ptfe emulsion, sack and the bag body Link position is laminating by hot blast and forms one.