CN216149240U

CN216149240U - Dust removal filter bag with built-in reinforcing layer cloth

Info

Publication number: CN216149240U
Application number: CN202121224298.6U
Authority: CN
Inventors: 姚航; 姚朝胜
Original assignee: Shandong Weike Environmental Protection Technology Co ltd
Current assignee: Shandong Weike Environmental Protection Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-04-01
Anticipated expiration: 2031-06-03

Abstract

The technical scheme relates to a dust-removing filter bag with built-in reinforcing layer cloth, which is characterized in that the lower section of the filter bag is provided with the reinforcing layer cloth (2), the reinforcing layer cloth (2) is arranged on the inner side of a filter bag body filter material (1), and the periphery of the reinforcing layer cloth is integrated with the filter bag body filter material in a sealing manner. Therefore, a dust leakage channel which firstly penetrates through the cloth seam (11) and then penetrates through the needle hole (5) on the bag body filter material (1) is eliminated, and the dust removal efficiency of the bag type dust remover is improved.

Description

Dust removal filter bag with built-in reinforcing layer cloth

Technical Field

The invention relates to a dust removal filter bag with a reinforcing layer of cloth arranged on the inner side of the filter bag, and belongs to the field of environment-friendly bag type dust removal.

Background

The lowest section (generally a part which is 50-300mm away from the bottom end) of the dust removal filter bag is easily damaged by the external grinding between the filter bags and the internal grinding between the filter bags and the bag dragon. Therefore, in the manufacture of the filter bag, a layer of filter cloth is added on the basis of the filter material of the bag body, and the filter cloth is called as a reinforcing layer or a reinforcing layer cloth (2). As shown in figure 1, the prior art is to place a reinforcing layer (2) on the outer side of a filter material (1) and sew the reinforcing layer and the filter material together by a sewing thread (4). Because the cloth seam (11) and the needle hole (5) at the sewing position are in the filtering area of the filter bag, dust leakage channels (i-i) and (ii) -are formed as shown in figure 1, so that dust outside the filter bag passes through the cloth seam (11) and the needle hole (5) and enters the filter bag without being filtered, and the dust removal efficiency is reduced. Therefore, the prior art adopts the measure that the outer surface of the pinhole (5) of the reinforcing layer is coated with the sealant (6), so that the dust leakage channel is blocked, but the dust leakage channel is not solved, and compared with the dust leakage channel, the dust leakage of the channel is more serious.

Disclosure of Invention

To the ash leakage problem of the reinforced layer cloth seam (11) and the needle hole (5) in the prior art, the technical scheme provides a dust removal filter bag product scheme with a built-in reinforced layer cloth (2), which is characterized in that the lower segment of the filter bag is provided with the reinforced layer cloth (2) and the reinforced layer cloth (2) is arranged on the inner side of the filter bag body filter material (1). As shown in figure 2, compared with the prior art, the circumference of the reinforcing layer cloth (2) after being formed into a cylinder is correspondingly reduced, then the reinforcing layer cloth is sleeved into the cylindrical bag body filter material (1), namely the reinforcing layer cloth is arranged on the inner side of the bag body filter material (1), and then the periphery of the reinforcing layer cloth is tightly combined with the bag body filter material (1) into a whole.

The periphery of the reinforcing layer cloth arranged on the inner side of the filter material is integrated with the filter material in a sealing manner, and the sealing manner can be hot melting and pressing, or adhesive bonding, or sewing and sewing. For a few of filter materials which can be melted by heat, such as terylene, PPS and the like, the sealing process can adopt hot melting and pressing. However, the application range of the hot-melt filter material is limited, the operation difficulty of the position is high, and the practical value is limited, so that in most cases, the filter bag reinforcing layer can only be sewn when being manufactured.

When the sewing process is adopted for sealing, the technology can be adopted. After the reinforcing layer cloth (2) is arranged inside, cloth seams (11) between the reinforcing layer cloth and the bag body filter material (1) are no longer channels which are mutually communicated inside and outside the filter bag. The dust firstly passes through the cloth seam (11) and then passes through the dust leakage channel (namely, the dust leakage channel II-II) of the needle hole (5) on the bag body filter material (1) to be no longer existed. As long as the sealing glue (6) is smeared on the outer side or the PTFE sealing strip is pasted on the outer side, the dust leakage channel (I) -I is blocked, and the dust leakage problem caused by sewing of the reinforcing layer cloth (2) can be thoroughly solved.

If the bag bottom of the filter bag is in a tying form, namely the bag bottom is tightly gathered into a bunch by the buckle (10) and is locked and sealed, as shown in figure 3, the lower periphery of the reinforcing layer cloth (2) can also be gathered in the buckle (10) along with the filter material of the bag body.

The current state of haze in China proves that the dust removal industry hopes to have lower emission as a bag type dust remover of main industrial dust removal equipment. One dust removal project usually has thousands or even tens of thousands of filter bags working simultaneously. According to the prior art, the reinforcing layer cloth (2) of each filter bag is provided with at least 100 plus 300 needle holes (5) and cloth seams (11) to form a dust leakage channel, the influence on the dust removal efficiency cannot be ignored, the technical scheme not only thoroughly solves the problem of dust leakage channel, but also does not increase the cost, the process is basically unchanged, and the scheme is simple, practical and reliable.

Drawings

The invention has the attached figure 3 pages, 3 in total:

FIG. 1 is a schematic view of the position of a prior art reinforcing layer

FIG. 2 is a schematic view of the position of a reinforcing layer cloth according to the present invention

FIG. 3 is a schematic view showing the position of the reinforcing layer cloth of the present technology in the form of a bag bottom binding

1-bag body filter material 2-reinforcing layer cloth 3-bag base cloth 4-suture 5-needle hole 6-sealant 7-expansion ring 8-clamping strip 9-expansion ring wrapping cloth 10-clamping buckle 11-cloth seam

Detailed Description

Example 1

As shown in the dust-removing filter bag shown in figure 2, the material of the filter material is 550g/m²The terylene film-coated needled felt forms a cylindrical bag body by thermally melting the middle seam of the bag body. The bag mouth is made by the same method as the conventional method, namely, the expansion ring wrapping cloth 9 wrapped with the expansion ring 7 and the clamping strip 8 is sewn and connected with the bag body filter material 1, and the sealing glue 6 is coated on the pin holes 5 on the outer surface of the filter bag. When the reinforcing layer is manufactured, the same material as the bag body filter material 1 is taken as the reinforcing layer cloth 2, a short tube with the height of 300mm is manufactured, the outer diameter of the short tube is equal to the inner diameter of the tubular bag body filter material 1, then the short tube is sleeved into the inner side of the tubular bag body to be aligned with the lower periphery of the bag body filter material 1, and the upper periphery of the short tube is sewn with the bag body filter material 1 by using sewing threads 4. The bag bottom cloth 3 is made of the same material as the bag body filter material 1, and is connected with the lower peripheries of the bag body filter material 1 and the reinforcing layer cloth 2 through sewing by using sewing threads 4. Finally, coating the sealant 6 on the outer side surface of the filter bag correspondingly to the needle hole 5 generated by the two-time sewing connection, thereby completing the manufacture of the whole built-in reinforcing layer cloth 2.

Claims

1. The utility model provides a dust bag of built-in enhancement layer cloth, includes filter material (1), expansion ring (7), card strip (8), bag backer (3) or buckle (10) of making the filter bag, or sack expansion ring infantees (9), its characterized in that: the lower section of the filter bag is provided with a reinforcing layer cloth (2), the reinforcing layer cloth (2) is arranged on the inner side of the filter bag body filter material (1), and the periphery of the reinforcing layer cloth is integrated with the filter bag body filter material in a sealing manner.

2. The dust bag with a built-in reinforcing layer cloth as claimed in claim 1, wherein: the periphery of the reinforcing layer cloth (2) arranged on the inner side of the bag body filter material (1) and the filter material are tightly combined into a whole, and hot melting and pressing, or glue bonding, or sewing can be carried out.

3. The dust bag with a built-in reinforcing layer cloth as claimed in claim 2, wherein: the combination of the periphery of the reinforcing layer cloth (2) and the bag body filter material (1) is sewn, and the surface of a sewing needle hole (5) on the outer side of the filter bag is coated with a sealant (6) or stuck with a PTFE seal.

4. A filter bag with a built-in reinforcing layer cloth as claimed in claim 1, 2 or 3, wherein: the bottom of the filter bag is in a tying form, and the lower periphery of the reinforcing layer cloth (2) is tied and gathered in the buckle (10) along with the filter material (1) of the bag body.