CN219089097U

CN219089097U - Polytetrafluoroethylene microporous membrane filter material capable of being washed by water

Info

Publication number: CN219089097U
Application number: CN202223423776.3U
Authority: CN
Inventors: 张丕运; 鲁扎典; 李艳秋; 陈高升
Original assignee: Changzhou Lianying Environmental Protection Technology Co ltd
Current assignee: Changzhou Lianying Environmental Protection Technology Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-05-30
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a washable polytetrafluoroethylene microporous membrane filter material, which comprises a filter layer, wherein the lower end of the filter layer is provided with a supporting layer, the outer end of the supporting layer is sprayed with hydrophobic paint, the number of the supporting layer is one layer or two layers, the supporting layer is made of non-woven fabrics, the filter layer is made of polytetrafluoroethylene microporous membranes, the thickness of the supporting layer is 0.05-0.6mm, the density of the supporting layer is 10-200 g/square meter, the thickness of the filter layer is 0.5-100um, and the filtering resistance of the filter layer is 20-200Pa. According to the utility model, the hydrophobic coating is sprayed on the surface of the structural layer, so that the structural layer can be prevented from absorbing water after being cleaned, and the filter membrane is prevented from absorbing water, so that dust is prevented from being absorbed by the structural layer during use, the filtering effect of the filter screen is prevented from being influenced, the filter membranes with different specifications are produced through the support layers with different layers, and the filtering resistance and the service life of the filter membrane are adjusted to meet different user requirements.

Description

Polytetrafluoroethylene microporous membrane filter material capable of being washed by water

Technical Field

The utility model relates to the technical field of filter membranes, in particular to a washable polytetrafluoroethylene microporous membrane filter material.

Background

With the wide use of dust collectors and sweeping robots and the use of the robots in different places, the functions and requirements of users are continuously improved, wherein after water is absorbed during the use, the filter is blocked after being opened at a glance, the dust collectors cannot be used when the dust collectors and the sweeping robots are used again, and the filter element can be replaced again, so that the dust collectors and the sweeping robots can be consumed quickly if the dust collectors and the sweeping robots are repeatedly used for several times.

For example, a filter core for household dust collector disclosed in the authority bulletin number CN217610792U, it includes the inner filter layer, transparent shell body is installed to the outer wall of inner filter layer, install the detection passageway between transparent shell body and the inner filter layer, the filter screen is installed to the outer wall of inner filter layer, the upper end cover is installed to the top of filtering the filter core body, the lower extreme cover is installed to the below of filtering the filter core body, install the display screen on the outer wall of upper end cover front end face, infrared dust sensor is all installed to the inside both sides of upper end cover, infrared dust sensor's output and display screen electric connection, the detection lamp is installed to infrared dust sensor's lower extreme.

The above-mentioned disclosed a filter core for domestic dust catcher also has above-mentioned problem, and the filter core can't wash, can only change the filter core once more after the filter core blocks up, causes unnecessary extravagant, and current a lot of filter media all claim can the washing, but adsorb moisture in the filter membrane after the washing, and during reuse, the water stain adsorbs the dust and forms spot hard block jam filter screen to influence the filter effect, and cause the filter screen to damage easily.

Disclosure of Invention

The utility model aims to provide a polytetrafluoroethylene microporous membrane filter material capable of being washed by water, so as to solve the problem that the conventional middle filter membrane cannot be washed or water stain residue is large after washing.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a but washing polytetrafluoroethylene microporous membrane filter media, includes the filter layer, the lower extreme of filter layer is provided with the supporting layer, the outer end spraying of supporting layer has hydrophobic coating.

Preferably, the number of the supporting layers is one or two.

Preferably, the supporting layer is made of non-woven fabrics, and the non-woven fabrics are resistant to washing and rubbing.

Preferably, the filter layer is made of polytetrafluoroethylene microporous membrane, and the polytetrafluoroethylene microporous membrane has low filtration resistance, high filtration efficiency, high structural strength and no water absorption.

Preferably, the thickness of the supporting layer is 0.05-0.6mm, and the density of the supporting layer is 10-200 g/square meter.

Preferably, the thickness of the filter layer is 0.5-100um, the filtration resistance of the filter layer is 20-200Pa, and the filtration efficiency of the filter layer is 85-99.999%.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the hydrophobic coating is sprayed on the surface of the structural layer, so that the structural layer can be prevented from absorbing water after being cleaned, and the filter membrane cannot absorb water, so that the structural layer can be prevented from absorbing dust during use, and the filtering effect of the filter screen is prevented from being influenced.

2. The utility model produces the filter membrane with different specifications through the support layers with different layers, and adjusts the filtration resistance and the service life of the filter membrane to meet different user demands.

Drawings

FIG. 1 is a schematic structure of embodiment 1 of the present utility model;

FIG. 2 is an enlarged view of FIG. 1A in accordance with the present utility model;

FIG. 3 is a schematic structure of embodiment 2 of the present utility model;

fig. 4 is an enlarged view of fig. 3B in accordance with the present utility model.

In the figure: 1 a filter layer, 2 a supporting layer and 21 a hydrophobic coating.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1 and 2, a washable polytetrafluoroethylene microporous membrane filter material in the drawings comprises a filter layer 1, wherein a support layer 2 is arranged at the lower end of the filter layer 1, and a hydrophobic coating 21 is sprayed at the outer end of the support layer 2 to prevent the support layer 2 from absorbing water.

The number of support layers 2 is one.

The supporting layer 2 is made of non-woven fabrics, and the non-woven fabrics are water-washing resistant and rubbing resistant.

The filter layer 1 is made of polytetrafluoroethylene microporous membrane, and the polytetrafluoroethylene microporous membrane has low filtration resistance, high filtration efficiency, high structural strength and no water absorption.

The thickness of the supporting layer 2 is 0.05-0.6mm, and the density of the supporting layer 2 is 10-200 g/square meter.

The thickness of the filter layer 1 is 0.5-100um, the filtering resistance of the filter layer 1 is 20-200Pa, and the filtering efficiency of the filter layer 1 is 85-99.999%.

The filter membrane is produced by: adopt PU glue (PU glue waterproof, high temperature resistant, irreversible after solidification) to laminate backing layer 2 and filter layer 1 together, this PU glue is spouted backing layer 2 through spouting the rifle after through high temperature melting and is glued, covers filter layer 1 again on spouting backing layer 2 that PU glued, laminates backing layer 2 and intermediate level together through the compound roller, individual layer backing layer 2 structure makes the filter membrane keep lower filtration resistance to promote the filter effect.

Example 2

Referring to fig. 3 and 4, this embodiment further illustrates an example 1, which is a washable polytetrafluoroethylene microporous membrane filter material, and includes a filter layer 1, a support layer 2 is disposed at the lower end of the filter layer 1, and a hydrophobic coating 21 is sprayed on the outer end of the support layer 2 to prevent the support layer 2 from absorbing water.

The number of support layers 2 is two.

In this embodiment, during production, firstly adopt PU glue (PU glue waterproof, high temperature resistant, irreversible after solidification) to glue two-layer supporting layer 2 together, this PU glue spouts the glue through spouting the rifle after melting through the high temperature and spouts supporting layer 2 on, and then cover a set of supporting layer 2 on another set of supporting layer 2 that spouts PU glue, laminate both sides supporting layer 2 together semi-manufactured goods and accomplish this through the compound roller, and then laminate filter layer 1 through the hot compress on the supporting layer 2 surface of the semi-manufactured goods that has done, double-deck supporting layer 2 structure makes the life of filter membrane longer.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A washable polytetrafluoroethylene microporous membrane filter material, comprising:

the filter layer (1), the lower extreme of filter layer (1) is provided with supporting layer (2), the outer end spraying of supporting layer (2) has hydrophobic coating (21).

2. The washable polytetrafluoroethylene microporous membrane filter according to claim 1, wherein: the number of the supporting layers (2) is one or two.

3. The washable polytetrafluoroethylene microporous membrane filter according to claim 2, wherein: the supporting layer (2) is made of non-woven fabrics.

4. The washable polytetrafluoroethylene microporous membrane filter according to claim 1, wherein: the filter layer (1) is made of polytetrafluoroethylene microporous membrane.

5. The washable polytetrafluoroethylene microporous membrane filter according to claim 2, wherein: the thickness of the supporting layer (2) is 0.05-0.6mm, and the density of the supporting layer (2) is 10-200 g/square meter.

6. The washable polytetrafluoroethylene microporous membrane filter according to claim 1, wherein: the thickness of the filter layer (1) is 0.5-100um, the filtering resistance of the filter layer (1) is 20-200Pa, and the filtering efficiency of the filter layer (1) is 85-99.999%.