CN215232712U - High-temperature-resistant stainless steel fiber needled felt - Google Patents
High-temperature-resistant stainless steel fiber needled felt Download PDFInfo
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- CN215232712U CN215232712U CN202120641492.8U CN202120641492U CN215232712U CN 215232712 U CN215232712 U CN 215232712U CN 202120641492 U CN202120641492 U CN 202120641492U CN 215232712 U CN215232712 U CN 215232712U
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Abstract
The utility model relates to a acupuncture felt technical field, concretely relates to high temperature resistant stainless steel fiber acupuncture felt, including stainless steel mesh base cloth layer, the below on stainless steel mesh base cloth layer is equipped with lower floor's stainless steel fibrous layer, and the top on stainless steel mesh base cloth layer is equipped with the preoxidation fibrous layer, and the top on preoxidation fibrous layer is equipped with upper stainless steel fibrous layer, and the top on upper stainless steel fibrous layer is the graphite coating, and adjacent each layer forms through the acupuncture and fuses the connection. The novel dust removal device ensures the applicable on-site 400-degree dust removal working environment, realizes resistance reduction and energy conservation, and achieves the dust emission lower than 20mg/Nm3Even 10mg/Nm3The new requirements of (1).
Description
Technical Field
The utility model relates to a needled felt technical field, concretely relates to high temperature resistant stainless steel fiber needled felt.
Background
In the domestic industrial production such as vanadium industry, the production environment of 400 ℃ needs to be maintained to ensure that the effective components in the smoke to be purified can not be denatured, the domestic acupuncture felt used for smoke purification at present is limited by the temperature resistance of fiber components, the working temperature is mainly below 300 ℃, when the smoke purification and dust removal are carried out on industrial sites such as vanadium industry and the like in the high-temperature environment of 400 ℃, the dust removal modes such as ceramic tubes or centrifugal cyclone and the like can only be selected, and the modes have the characteristic of low dust removal efficiency, so that the national current requirement of being lower than 20mg/Nm can not be met at present3Even 10mg/Nm3The new standard of dust emission.
Therefore, how to develop a high temperature resistant stainless steel fiber needled felt which can effectively adapt to the working high temperature of 400 ℃ for a long time, achieve the effects of reducing resistance and saving energy, efficiently improve the filtering precision of dust in the dust-containing flue gas, and realize that the dust emission is lower than 20mg/Nm3The new requirements of the country are extremely significant.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an anti high temperature stainless steel fiber acupuncture felt ensures the dust removal operational environment of applicable on-the-spot 400 degrees, realizes falling to hinder energy-conservation, reaches the dust emission and is less than 20mg Nm3Even 10mg/Nm3The new requirements of (1).
The utility model discloses a realize like this, provide a high temperature resistant stainless steel fiber acupuncture felt, including stainless steel mesh base cloth layer, the below on stainless steel mesh base cloth layer is equipped with lower floor's stainless steel fibrous layer, and the top on stainless steel mesh base cloth layer is equipped with the preoxidation fibrous layer, and the top on preoxidation fibrous layer is equipped with upper stainless steel fibrous layer, and the top on upper stainless steel fibrous layer is the graphite coating, and adjacent each layer forms through the acupuncture and fuses the connection.
Preferably, the grammage of the stainless steel mesh base layer is 80g/m2The mesh number is 20 meshes, and the diameters of warp and weft monofilaments forming the stainless steel mesh base cloth layer are both 0.1 mm. The stainless steel net base cloth layer adopts a metal 316L-shaped stainless steel net of unconventional fibers as the base cloth.
More preferably, the pre-oxidized fiber layer has a grammage per unit area of 200g/m2The specification of the pre-oxidized fiber forming the pre-oxidized fiber layer was 2.0dtex × 51 mm. The pre-oxidation fiber layer is a black high-temperature resistant pre-oxidation fiber layer.
More preferably, the pre-oxidized fiber layer is formed by respectively and repeatedly superposing 4 layers of structures according to a zigzag advancing mode by a single net formed by carding 2.0dtex multiplied by 51mm pre-oxidized fibers.
More preferably, the lower stainless steel fiber layer has a grammage per unit area of 660g/m2The fiber specification of the lower stainless steel fiber layer is 25 mu m multiplied by 80 mm; the gram weight per unit area of the upper stainless steel fiber layer is 500g/m2The stainless steel fiber layer at the upper layer uses two fiber specifications of 20 mu m multiplied by 65mm and 12 mu m multiplied by 55mm, and the two fibers are uniformly mixed in advance according to the proportion of 4: 1.
More preferably, the lower stainless steel fiber layer is formed by respectively and reciprocally superposing 6 layers of structures according to a zigzag advancing mode by a single net formed by carding 25 mu m by 80mm of stainless steel fibers; the upper stainless steel fiber layer is formed by carding two types of stainless steel fibers with the sizes of 20 mu m multiplied by 65mm and 12 mu m multiplied by 55mm according to the component proportion of the mixing ratio of 4:1, laying the stainless steel fibers into a single net, and overlapping the single net into a 4-layer structure in a reciprocating mode according to the zigzag advancing mode.
More preferably, the gram weight per unit area of the graphite coating is 60g/m2。
More preferably, the gram weight of the whole unit area of the high-temperature resistant stainless steel fiber needled felt is 1500g/m2。
Compared with the prior art, the utility model has the advantages of:
the fiber and the base cloth made of stainless steel have high temperature resistance, and the practical dust removal industrial and mining can be realizedA high temperature dust removal environment of 400 ℃; the structure of the preoxidized fiber layer and the adjacent stainless steel fiber layers with the small diameters is overlapped to form a trumpet-shaped pore channel with a narrow upper part and a wide lower part, so that the field is lower than 20mg/Nm3Even 10mg/Nm3The dust emission requirement of (2); the graphite coating on the outermost layer can improve the rough state of the surface of the stainless steel fiber layer, achieve the smooth and flat effect, reduce the adhesion of dust on the surface of the stainless steel fiber layer and achieve the purposes of low resistance and energy conservation; the stainless steel fiber layer with the thick diameter at the lowermost layer and the base cloth layer jointly play a role in structural support, and the stable state of the whole structure of the product is ensured.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments:
fig. 1 is a schematic structural diagram of the present invention;
in the figure: stainless steel net base cloth layer-1, lower stainless steel fiber layer-2, pre-oxidation fiber layer-3, upper stainless steel fiber layer-4 and graphite coating layer-5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the utility model provides a high temperature resistant stainless steel fiber needled felt, including stainless steel mesh base cloth layer 1, the below of stainless steel mesh base cloth layer 1 is equipped with lower floor's stainless steel fibrous layer 2, and the top of stainless steel mesh base cloth layer 1 is equipped with pre-oxidation fibrous layer 3, and the top of pre-oxidation fibrous layer 3 is equipped with upper stainless steel fibrous layer 4, and the top of upper stainless steel fibrous layer 4 is graphite coating 5, and adjacent each layer forms through the acupuncture and fuses the connection.
The gram weight per unit area of the stainless steel mesh base cloth layer 1 is 80g/m2The mesh number is 20 meshes, and the diameters of warp and weft monofilaments forming the stainless steel mesh base cloth layer 1 are both 0.1 mm.
The pre-oxidized fiber layer 3 has a grammage per unit area of 200g/m2Forming a precursorThe pre-oxidized fibers of the oxidized fiber layer 3 had a size of 2.0dtex × 51 mm.
The gram weight per unit area of the lower stainless steel fiber layer 2 is 660g/m2The fiber specification of the lower stainless steel fiber layer 2 is 25 μm × 80 mm; the gram weight per unit area of the upper stainless steel fiber layer 4 is 500g/m2The stainless steel fiber layer 4 as the upper layer uses two fiber specifications of 20 μm 65mm and 12 μm 55mm, and the two fibers are uniformly mixed in advance in a ratio of 4: 1.
The gram weight per unit area of the graphite coating 5 is 60g/m2。
The integral unit area gram weight of the high-temperature resistant stainless steel fiber needled felt is 1500g/m2。
The manufacturing process comprises the following steps:
1) firstly, respectively carding 25 mu m 80mm stainless steel fibers and 2.0dtex 51mm pre-oxidized fibers into a single net, respectively superposing a 6-layer lower stainless steel fiber layer 2 and a 4-layer pre-oxidized fiber layer 3 in a reciprocating manner by the single net in a zigzag advancing manner, respectively paving the single net on the upper surface and the lower surface of a stainless steel net base fabric layer 1, and then carrying out needling operation by a pre-needling machine to form a felt;
2) on the surface of the pre-oxidized fiber layer of the cohesive felt, stainless steel fibers with the size of 20 mu m multiplied by 65mm and the size of 12 mu m multiplied by 55mm are carded and paved into a stainless steel fiber layer 2 according to the component proportion of the mixing ratio of 4:1, and the stainless steel fiber layer is formed by the reciprocating superposition of 4 layers of single nets in a zigzag advancing mode;
3) when the graphite coating 5 is produced and coated, the coating thickness of the set surface coating emulsion is 1mm, the surface coating emulsion is changed into 0.3mm after heat setting, curing and drying, a porous film-shaped layer is formed to cover the surface of a product, the rough situation of the original surface is improved, meanwhile, the self greasiness of graphite is utilized, the adhesion force of dust on the surface of the graphite coating can be reduced, the dust accumulation is reduced, the reasonable air permeability of the product is ensured, and the effects of reducing resistance and saving energy are realized, wherein the graphite coating is mainly formed by mixing graphite emulsion, polytetrafluoroethylene emulsion and a curing agent according to a certain proportion;
4) the consolidation between each fiber layer and the base cloth into the felt is mainly realized by different needling processes, and the formed needled felt is subjected to impregnation, graphite coating, heat setting and hot-press polishing operation treatment.
The utility model has the advantages that: by means of the high temperature resistance of the stainless steel fiber layers 2 and 4 and the stainless steel mesh base cloth layer 1, the high temperature dust removal device can be suitable for the high temperature dust removal environment with the temperature of 400 ℃ in dust removal industrial and mining; by means of structural superposition of the stainless steel fiber layer 4 and the pre-oxidized fiber layer 3, a trumpet-shaped pore channel with narrow upper part and wide lower part is formed by utilizing the differences of diameters, modulus plasticity, linear density and the like of different fiber materials in each fiber layer, the small pores with the narrow upper part can efficiently intercept and trap dust with superfine particle size, the large pores with the wide lower part can rapidly evacuate purified gas to reduce downward extrusion force of gas above the surface of a product on the dust with the fine particle size, prevent the dust from penetrating and leaking, and realize the effect of being lower than 20mg/Nm3Even 10mg/Nm3The high-efficiency dust removal efficiency is improved; the rough shape of the surface of the stainless steel fiber layer can be repaired by coating a graphite coating on the surface of the product, so that the smooth and flat effect is achieved, the dust is not easy to accumulate, and meanwhile, the graphite has the characteristics of high temperature resistance and greasiness resistance, so that the adhesion of the dust on the surface can be reduced, the dust deposition is reduced, and the purposes of low resistance and energy conservation are achieved; the stainless steel fiber layer 2 formed by the fibers with the large diameter and the stainless steel net base cloth layer 1 jointly play a role in supporting the upper structure, so that the stability, the stable performance and the long service life of the whole product are ensured.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. The utility model provides a high temperature resistant stainless steel fiber acupuncture felt, a serial communication port, including stainless steel mesh base cloth layer (1), the below of stainless steel mesh base cloth layer (1) is equipped with lower floor stainless steel fibrous layer (2), the top of stainless steel mesh base cloth layer (1) is equipped with preoxidation fibrous layer (3), the top of preoxidation fibrous layer (3) is equipped with upper stainless steel fibrous layer (4), the top of upper stainless steel fibrous layer (4) is graphite coating (5), adjacent each layer forms through the acupuncture and fuses the connection.
2. The high temperature resistant stainless steel fiber needled felt according to claim 1, wherein the grammage of the stainless steel mesh base cloth layer (1) is 80g/m2The mesh number is 20 meshes, and the diameters of warp and weft monofilaments forming the stainless steel mesh base cloth layer (1) are both 0.1 mm.
3. The high temperature resistant stainless steel fiber needled felt according to claim 1, characterized in that the pre-oxidized fiber layer (3) has a grammage per unit area of 200g/m2The pre-oxidized fiber forming the pre-oxidized fiber layer (3) had a standard of 2.0dtex × 51 mm.
4. The high temperature resistant stainless steel fiber needled felt according to claim 3, characterized in that the pre-oxidized fiber layer (3) is formed by respectively and repeatedly superposing 4 layers of structures according to a zigzag advancing manner by a single net formed by carding 2.0dtex x 51mm pre-oxidized fibers.
5. The high temperature resistant stainless steel fiber needled felt according to claim 1, characterized in that the grammage per unit area of the lower stainless steel fiber layer (2) is 660g/m2The fiber specification of the lower stainless steel fiber layer (2) is 25 mu m multiplied by 80 mm; the gram weight per unit area of the upper stainless steel fiber layer (4) is 500g/m2The stainless steel fiber layer (4) as the upper layer uses two fiber specifications of 20 mu m multiplied by 65mm and 12 mu m multiplied by 55mm, and the two fibers are uniformly mixed in advance according to the proportion of 4: 1.
6. The high-temperature-resistant stainless steel fiber needled felt according to claim 5, wherein the lower stainless steel fiber layer (2) is formed by respectively and repeatedly superposing 6 layers of structures in a zigzag advancing manner by a single net formed by carding 25 μm by 80mm stainless steel fibers; the upper stainless steel fiber layer (4) is formed by carding two types of stainless steel fibers of 20 mu m multiplied by 65mm and 12 mu m multiplied by 55mm according to the component proportion of the mixing ratio of 4:1, paving into a single net, and superposing the single net into a 4-layer structure in a reciprocating manner according to a zigzag advancing mode.
7. The high temperature resistant stainless steel fiber needled felt according to claim 1, characterized in that the grammage of the graphite coating (5) is 60g/m2。
8. The high temperature resistant stainless steel fiber needled felt according to claim 1, wherein the high temperature resistant stainless steel fiber needled felt has an overall basis weight of 1500g/m2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120641492.8U CN215232712U (en) | 2021-03-30 | 2021-03-30 | High-temperature-resistant stainless steel fiber needled felt |
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| CN202120641492.8U CN215232712U (en) | 2021-03-30 | 2021-03-30 | High-temperature-resistant stainless steel fiber needled felt |
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