CN218853721U - Novel inverse gradient filter material - Google Patents

Abstract

The utility model discloses a novel filter material of contrary gradient, dust-facing side fibrous layer, PTFE membrane, base cloth layer and net gas face fibrous layer including outside-in sets gradually. In practical application, the dust filter material is from the dust-facing fiber layer to the PTFE membrane, and the dust interception gap is from large to small, so that the filter material effect is better, the PTFE membrane is not washed by dust-containing airflow any more, and the service life is prolonged; after the filter material is formed, the dust-facing surface fiber layer is positioned on the outer surface, and can be subjected to more surface treatments such as burning, pressing, coating and the like, so that the filtering precision and the breaking strength of the filter material can be further improved; the PTFE membrane is used as a superfine filter layer and is arranged below the dust-facing fiber layer, so that the PTFE membrane has protection significance, the filtering precision of the PTFE membrane is ensured, and the service life of the PTFE membrane is prolonged.

Description

Novel inverse gradient filter material

Technical Field

The utility model relates to a filter material technical field especially indicates a novel filter material of contrary gradient.

Background

The filter material is used as the core of the bag type dust collector, and the material and the structure of the filter material can have great influence on the using effect of the filter material. The existing filter material with the PTFE membrane generally comprises an air purifying surface fiber layer, a base cloth layer, a dust facing surface fiber layer and the PTFE membrane from inside to outside. The PTFE film has a compact space net structure, and the filter material with the structure has excellent filtering precision and can meet the stricter environmental-friendly discharge requirement. After long-term use, the PTFE membrane with the ultrafine pore diameter can be damaged under the scouring action of dusty airflow, so that the filtering effect of the filtering material is reduced. Based on this, there is a need for improvement of the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel filter material of contrary gradient can improve the filter fineness of filter material, performance such as fracture brute force.

In order to achieve the above purpose, the solution of the present invention is:

a novel reverse gradient filter material comprises a dust-facing surface fiber layer, a PTFE membrane, a base cloth layer and a gas-purifying surface fiber layer which are sequentially arranged from outside to inside.

The dust-facing fiber layer and the base cloth layer are fixedly connected with the PTFE membrane through a thermal bonding process.

The base cloth layer is fixedly connected with the gas-purifying surface fiber layer through a needling reinforcement process

The surface of the dust-facing fiber layer is subjected to surface treatment by adopting a sintering or coating process.

After the technical scheme is adopted, the utility model discloses following technological effect has:

(1) in practical application, the dust filter material is from the dust-facing fiber layer to the PTFE membrane, and dust interception gaps of the dust filter material are from large to small, so that the filter material effect is better, the PTFE membrane is not washed by dust-containing airflow any more, and the service life is prolonged;

(2) after the filter material is formed, the dust-facing surface fiber layer is positioned on the outer surface, and can be subjected to more surface treatments such as burning, pressing, coating and the like, so that the filtering precision and the breaking strength of the filter material can be further improved;

(3) the PTFE membrane is used as a superfine filter layer and is arranged below the dust-facing fiber layer, so that the PTFE membrane has protection significance, the filtering precision of the PTFE membrane is ensured, and the service life of the PTFE membrane is prolonged.

Drawings

FIG. 1 is a schematic diagram of a layer structure according to an embodiment of the present invention;

the reference numbers illustrate:

1- -a dust-facing fibrous layer; 2-a PTFE membrane; 3- -a base fabric layer; 4- -clean air face fiber layer.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be understood that the indicated positions or positional relationships are based on the positions or positional relationships shown in the drawings, or the positions or positional relationships that the products of the present invention are usually placed when in use, or the positions or positional relationships that those skilled in the art conventionally understand, and are merely simplified for the convenience of describing the embodiments of the present invention, and do not indicate or imply that the indicated devices or elements must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, the utility model discloses a novel filter material with inverse gradient, which comprises a dust facing fiber layer 1, a PTFE membrane 2, a base cloth layer 3 and a clean air face fiber layer 4 which are arranged in sequence from outside to inside.

Specific embodiments of the present invention are shown below.

The dust-facing fiber layer 1 and the base cloth layer 3 are fixedly connected with the PTFE membrane 2 through a thermal bonding process; the base cloth layer 3 is fixedly connected with the gas-purifying surface fiber layer 4 through a needling reinforcement process. The bonding and needling reinforcing processes can ensure that all the layers can be firmly connected.

The surface of the dust-facing fiber layer 1 can be subjected to surface treatment such as burning, pressing, coating and the like, so that the performance indexes of the filter material such as filtering precision, breaking strength and the like are further improved.

Through the scheme, in practical application, the filter material of dust is from the dust-facing surface fiber layer 1 to the PTFE membrane 2, and the dust interception gap is from large to small, so that the filter material effect is better, and the PTFE membrane 2 is not washed by dust-containing airflow any more, and the service life is prolonged; after the filter material is formed, the dust-facing surface fiber layer 1 is positioned on the outer surface, and can be subjected to more surface treatments such as burning, pressing, coating and the like, so that the filtering precision and the breaking strength of the filter material can be further improved; the PTFE membrane 2 is used as a superfine filtering layer and is arranged below the dust-facing fiber layer 1, so that the PTFE membrane 2 has protection significance, the filtering precision of the PTFE membrane 2 is ensured, and the service life of the PTFE membrane is prolonged.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims (4)

1. The novel inverse gradient filter material is characterized in that:

comprises a dust-facing surface fiber layer, a PTFE membrane, a base cloth layer and a gas-purifying surface fiber layer which are arranged from outside to inside in sequence.

2. The novel inverse gradient filter material of claim 1, wherein:

the dust-facing fiber layer and the base cloth layer are fixedly connected with the PTFE membrane through a thermal bonding process.

3. The novel inverse gradient filter material of claim 1, wherein:

the base cloth layer is fixedly connected with the air purifying surface fiber layer through a needling reinforcement process.

4. The novel inverse gradient filter material of claim 1, wherein:

the surface of the dust-facing fiber layer is subjected to surface treatment by adopting a sintering or coating process.

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