CN213132334U - High temperature resistant smooths high dust removal filter bag - Google Patents

Abstract

The utility model discloses a high temperature resistant high dust removal filter bag, which comprises a filter bag body and a filter bag framework, wherein the filter bag body is sleeved on the filter bag framework; the filter bag body is provided with an inner layer and an outer layer from inside to outside, and the inner layer and the outer layer are sewn into a whole through needling; the inner layer is woven by composite fibers made of basalt fibers and polytetrafluoroethylene fibers and comprises a first base cloth, a felt net and a second base cloth which are sequentially connected from inside to outside; the filter bag skeleton includes circular base, montant and solid fixed ring, and it has a plurality of montants to go up along circumference evenly distributed on the circular base, and the length direction evenly distributed of montant has a plurality of solid fixed rings. The high-temperature-resistant high-pressure-resistant dust removal filter bag achieves the purpose of increasing the filtering area of the filter bag body in a mode of outwards expanding the filter bag framework; the filter bag body is prepared from composite fibers made of basalt fibers and polytetrafluoroethylene fibers, so that the prepared filter bag has the advantages of high temperature resistance, acid and alkali resistance, moisture resistance, high strength and the like.

Description

High temperature resistant smooths high dust removal filter bag

Technical Field

The utility model relates to an environmental protection filtration technology field, concretely relates to high temperature resistant smooths high dust removal filter bag.

Background

The dust-removing filter bag is an important component of the bag-type dust collector, and purified gas enters the box body through the filter bag and is discharged from the air outlet. However, the working environment of some dust filter bags is in a high-temperature environment, and the common dust filter bag cannot adapt to the working environment.

High-temperature-resistant filter bags exist in the market, but the high-temperature-resistant filter bags have the problems of single structure, small filter area, low filter efficiency and the like, in addition, the high-temperature-resistant filter bags are made of base cloth materials such as medium-alkali glass fibers and alkali-free glass fibers in inorganic fibers, or polyphenylene sulfide fibers, polytetrafluoroethylene fibers, polysulfonamide fibers, polyimide fibers and the like with high temperature resistance in chemical fibers, the service temperature of the fibers is below 260 ℃, and the high-temperature-resistant chemical fibers are very expensive, so that the production cost of the high-temperature-resistant filter bags is overhigh.

The basalt fiber is a novel high-performance inorganic fiber prepared by taking natural basalt ore as a raw material through a wire drawing process, and the diameter of the novel high-performance inorganic fiber is generally 7-13 mu m. The basalt fiber has better temperature resistance and acid and alkali resistance than glass fiber and other organic fibers, has the characteristics of no toxicity and harm to the environment, good high and low temperature resistance, high modulus, insulativity and the like, is low in price, and has good application prospect in the field of high-temperature filter materials.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a high temperature resistant smooths high dust removal filter bag to there is single structure, filter area is little, the low scheduling problem of filtration efficiency in the high temperature dust removal filter bag of solution prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

according to the first aspect of the utility model, a high temperature resistant dust filter bag for raising, said filter bag comprises a filter bag body and a filter bag skeleton, said filter bag body is sleeved on said filter bag skeleton; the filter bag body is provided with an inner layer and an outer layer from inside to outside, and the inner layer and the outer layer are sewn into a whole through needling; the inner layer is formed by weaving composite fibers made of basalt fibers and polytetrafluoroethylene fibers, and comprises a first base cloth, a felt net and a second base cloth which are sequentially connected from inside to outside; the filter bag skeleton includes circular base, montant and solid fixed ring, last edge circumference evenly distributed of circular base has a plurality of montants, the length direction evenly distributed of montant has a plurality of solid fixed rings.

By the technical scheme, the filter bag body achieves the purpose of increasing the filtering area in a mode of outwards expanding the filter bag framework; the inner layer of the filter bag body is formed by a three-layer structure, so that the strength of the filter bag can be further improved, and the service life of the filter bag can be further prolonged; the inner layer of the filter bag is prepared from the composite fiber prepared from the basalt fiber and the polytetrafluoroethylene fiber, the defects of no fiber curl, difficult processing and the like existing in the process of independently spinning the basalt fiber are overcome, the prepared filter bag has the advantages of high temperature resistance, acid and alkali resistance, moisture resistance, high strength and the like, the strength loss rate can be greatly reduced at the high temperature of 300-350 ℃, and the service life of the filter bag is prolonged.

Further, the vertical rod between the adjacent fixing rings is inwards sunken to form a first arc-shaped part.

Further, a second arc-shaped part is arranged outside the fixing ring.

Further, fixed ring includes a plurality of concave arcs and a plurality of protruding arcs, concave arcs and protruding arcs set up and end to end in proper order the interval.

Through above-mentioned technical scheme, under the same physical condition, can improve solid fixed ring's bending strength on the one hand, prolong the life of filter bag skeleton, on the other hand can increase the filter area of filter bag body, improves filtration efficiency.

Furthermore, the top points of the convex arc lines are welded with the vertical rods in a one-to-one correspondence mode.

Through above-mentioned technical scheme, realize solid fixed ring fixed connection on the montant.

Further, the twist of the composite fiber is 100-350 twist.

Further, the basalt fibers account for 50-99% of the composite fibers; the polytetrafluoroethylene fiber accounts for 1-50% of the composite fiber.

Further, the diameter of the basalt fiber is 5-13 microns; the polytetrafluoroethylene fibers have a diameter of 1-50 microns.

Further, the first base cloth or the second base cloth is twill or plain.

Through above-mentioned technical scheme, first base cloth and second base cloth provide effectual supporting role in filter bag filtration process, adopt two-layer base cloth to make the filter bag more stable, improve its life, the design of twill or plain weave is more favorable to laying of felt-net.

Further, the felt is formed by cross-lapping.

Through the technical scheme, the vertical and horizontal strength of the felt net can be equivalent by adopting a cross lapping mode.

The utility model has the advantages of as follows:

the high-temperature-resistant high-pressure-resistant dust removal filter bag achieves the purpose of increasing the filtering area of the filter bag body in a mode of outwards expanding the filter bag framework; the filter bag body is made of composite fibers made of basalt fibers and polytetrafluoroethylene fibers to prepare the inner layer of the three-layer structure of the filter bag, the defects that the fibers are not curled and are difficult to process when the basalt fibers are independently woven are overcome, the manufactured filter bag has the advantages of high temperature resistance, acid and alkali resistance, moisture resistance, high strength and the like, the strength loss rate can be greatly reduced at the high temperature of 300-350 ℃, and the service life of the filter bag is prolonged.

The utility model discloses simple structure, the montant of filter bag skeleton and solid fixed ring all are provided with arc portion, overlap filter bag body on the filter bag skeleton during use, and the filter bag body just can be hugged closely when the fan of dust remover is ventilated and form vertical, horizontal all inwards sunken fold in first, second arc portion, and more straight cartridge type filter bag structure has increased filterable effective area to under the prerequisite that does not change filter bag quantity, the dust collection ability of dust remover has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural view of a high temperature resistant filter bag for removing dust provided by the utility model 1;

fig. 2 is a front view of the filter bag framework provided by the utility model 1;

fig. 3 is a top view of the filter bag framework provided by the utility model 1;

fig. 4 is a schematic diagram of an inner layer structure of the filter bag body provided by the utility model 1;

in the figure: the filter bag comprises a filter bag body 1, a filter bag framework 2, first base cloth 3, a felt net 4, second base cloth 5, a circular base 21, a vertical rod 22, a fixing ring 23, a first arc-shaped portion 24, a second arc-shaped portion 25, a concave arc 231 and a convex arc 232.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The high-temperature-resistant high-pressure-resistant dust removal filter bag shown in the figures 1-4 comprises a filter bag body 1 and a filter bag framework 2, wherein the filter bag body 1 is sleeved on the filter bag framework 2, the upper end of the filter bag body 1 is provided with a bag opening, and the lower end of the filter bag body is closed.

The filter bag comprises a filter bag body 1 and is characterized in that an inner layer and an outer layer are arranged outside the filter bag body 1 from inside to outside, the inner layer and the outer layer are sewn into a whole through needling, the inner layer is formed by weaving composite fibers made of basalt fibers and polytetrafluoroethylene fibers, and the twist of the composite fibers is 100 twists. The basalt fibers account for 99% of the composite fibers; the polytetrafluoroethylene fiber accounts for 1% of the composite fiber. The diameter of the basalt fiber is 13 micrometers; the polytetrafluoroethylene fibers have a diameter of 50 microns.

The inner layer comprises a first base cloth 3, a felt net 4 and a second base cloth 5 which are sequentially connected from inside to outside; the first base cloth 3 or the second base cloth 5 are twill, and the felt 4 is formed by cross lapping.

Set up the intensity that inlayer and outer bilayer structure can improve the filter bag, the inlayer comprises three layer construction, can further improve the intensity of filter bag, and then can prolong the life of filter bag. The outer layer and the inner layer have the same structure, and the pore diameter of the outer layer is larger than that of the inner layer. Through above-mentioned technical scheme, can make the flue gas filter step by step, realize more efficient filtration.

The filter bag framework 2 comprises a circular base 21, vertical rods 22 and fixing rings 23, six vertical rods 22 are uniformly distributed on the circular base 21 along the circumferential direction, and five fixing rings 23 are uniformly distributed in the length direction of the vertical rods 22. The vertical rods 22 between the adjacent fixing rings 23 are recessed inward to form first arc-shaped portions 24. A second arc-shaped part 25 is arranged outside the fixing ring 23.

Fixed ring 23 includes six concave arcs 231 and six convex arcs 232, concave arcs 231 and convex arcs 232 set up and end to end in proper order the interval.

The top points of the convex arc lines 232 are welded with the vertical rods 22 in a one-to-one correspondence manner.

The first base cloth 3 or the second base cloth 5 are twill.

Example 2

The technical scheme of the embodiment is different from that of the embodiment 1, and is otherwise the same as that of the embodiment 1:

the twist of the composite fiber is 350 twists.

The basalt fibers account for 50% of the composite fibers; the polytetrafluoroethylene fibers account for 50% of the composite fibers.

The diameter of the basalt fiber is 5 micrometers; the polytetrafluoroethylene fibers have a diameter of 1 micron.

The first base fabric 3 or the second base fabric 5 is plain woven.

Example 3

The technical scheme of the embodiment is different from that of the embodiment 1, and is otherwise the same as that of the embodiment 1:

the twist of the composite fiber is 200 twists.

The basalt fibers account for 75% of the composite fibers; the polytetrafluoroethylene fibers account for 25% of the composite fibers.

The diameter of the basalt fiber is 8 micrometers; the polytetrafluoroethylene fibers have a diameter of 25 microns.

The first base fabric 3 or the second base fabric 5 is plain woven.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. A high-temperature-resistant high-pressure-resistant dust removal filter bag is characterized in that the filter bag comprises a filter bag body (1) and a filter bag framework (2), wherein the filter bag body (1) is sleeved on the filter bag framework (2); the filter bag comprises a filter bag body (1), wherein an inner layer and an outer layer are arranged outside the filter bag body from inside to outside, and the inner layer and the outer layer are sewn into a whole through needling; the inner layer is formed by weaving composite fibers made of basalt fibers and polytetrafluoroethylene fibers, and comprises a first base cloth (3), a felt net (4) and a second base cloth (5) which are sequentially connected from inside to outside; the filter bag framework (2) comprises a circular base (21), vertical rods (22) and fixing rings (23), wherein the circular base (21) is provided with a plurality of vertical rods (22) along the circumferential direction, and the length direction of the vertical rods (22) is provided with a plurality of fixing rings (23).

2. A high temperature resistant filter bag according to claim 1 wherein the vertical bars (22) between adjacent retaining rings (23) are recessed to form first arcs (24).

3. The high temperature resistant filter bag according to claim 2, wherein a second arc-shaped portion (25) is provided outside the fixing ring (23).

4. The high temperature resistant filter bag for removing dust of claim 3, wherein said fixing ring (23) comprises a plurality of concave arcs (231) and a plurality of convex arcs (232), said concave arcs (231) and said convex arcs (232) are sequentially spaced and connected end to end.

5. The high temperature resistant filter bag for raising dust according to claim 4, wherein the top of said convex arc line (232) is welded to said vertical rod (22) in a one-to-one correspondence.

6. The high temperature resistant Fuuping dust filter bag of claim 1, wherein the twist of said composite fiber is 100 and 350 twists.

7. The high temperature resistant filter bag for raising dust of claim 1, wherein said basalt fiber is 50-99% of the composite fiber; the polytetrafluoroethylene fiber accounts for 1-50% of the composite fiber.

8. The high temperature resistant filter bag for raising dust as claimed in claim 1, wherein the basalt fiber has a diameter of 5 to 13 μm; the polytetrafluoroethylene fibers have a diameter of 1-50 microns.

9. The high temperature resistant filter bag according to claim 1, wherein the first base cloth (3) or the second base cloth (5) is twill or plain.

10. A high temperature resistant filter bag according to claim 1 wherein said felt web (4) is formed by cross-lapping.

Images