CN219091660U

CN219091660U - Polytetrafluoroethylene double-membrane composite filter material

Info

Publication number: CN219091660U
Application number: CN202223066956.0U
Authority: CN
Inventors: 陈高升; 李艳秋; 张丕运; 鲁扎典
Original assignee: Changzhou Lianying Environmental Protection Technology Co ltd
Current assignee: Changzhou Lianying Environmental Protection Technology Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-05-30
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a polytetrafluoroethylene double-membrane composite filter material which comprises an inner support tube, a fine filter membrane, a coarse filter membrane and an outer protection tube, wherein the inner support tube and the outer protection tube are in a hollow structure, the fine filter membrane is glued on the outer end face of the inner support tube, the coarse filter membrane is sleeved on the inner end face of the fine filter membrane, the outer protection tube is sleeved on the outer end of the coarse filter membrane, a coarse filter hole is formed in the coarse filter membrane, and a blocking dyke is arranged at the edge of the outer end face of the coarse filter hole. According to the utility model, the blocking dyke is arranged on the outer end surface of the rough filtering hole, so that most impurities are difficult to accumulate on the surface of the rough filtering hole when impurities and water flow along the surface of the rough filtering film, the probability of blocking the rough filtering film by the impurities is greatly reduced, the flow velocity is reduced when the water flow passes through the rough filtering hole structure of the conical structure, the impact of fine particles mixed in the water flow on the fine filtering film is reduced, and the whole service life of the equipment is prolonged.

Description

Polytetrafluoroethylene double-membrane composite filter material

Technical Field

The utility model relates to the technical field of filter materials, in particular to a polytetrafluoroethylene double-membrane composite filter material.

Background

The filter medium is mainly used for filtering, and the filter medium is widely used in various industries, wherein the filter medium is used for aquaculture, chemical filtering, medical preparation and air purification, and the filter medium has a plurality of types, and is commonly used as water filter equipment and air filter equipment.

The existing filter material generally filters high-pressure liquid or gas through a microporous filter membrane, but when the filtered liquid or gas contains a large amount of impurities similar to the filter holes, the impurities easily block the filter holes, and then the filter holes are enlarged or broken by the impurities under the action of high pressure, so that the filtering effect of the filter membrane is greatly reduced.

For example, an authorized publication number CN215876890U discloses a washable polytetrafluoroethylene microporous membrane filter material, which belongs to the technical field of filter materials. The mounting frame is provided with a plurality of ventilation openings on two sides, a plurality of grooves are formed in the surfaces of the upper end and the lower end, fixing screws are symmetrically arranged on the upper side and the lower side of the mounting frame, and the joint of the fixing screws and the mounting frame is rotationally connected with a limit bar; the filter material comprises a filter layer and a supporting layer arranged below the filter layer; the filter layer is a polyethylene microporous membrane.

The filtering material has the advantages that the filtering film is easy to be blocked, and impurities are easy to enlarge or break the filtering holes under the action of the pressure of water flow after the filtering material is blocked, so that the filtering effect of the filtering material is greatly reduced, and therefore, the polytetrafluoroethylene double-film composite filtering material is needed to solve the problems.

Disclosure of Invention

The utility model aims to provide a polytetrafluoroethylene double-membrane composite filter material, which solves the problem that the filter material is easy to be blocked to cause filter membrane rupture to influence the filtering effect in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a polytetrafluoroethylene double membrane composite filter material, includes interior stay tube, smart filter membrane, milipore filter and outer protection pipe, interior stay tube and outer protection pipe are hollow out construction, the outer terminal surface of stay tube is including the smart filter membrane glue joint, the interior terminal surface at smart filter membrane is established to the milipore filter cover, outer protection pipe cover is established at the outer end of milipore filter, be provided with the coarse filtration hole on the milipore filter, the outer terminal surface edge of coarse filtration hole is provided with the barrier dyke.

Preferably, the blocking dyke is a truncated cone-shaped hollow bulge, and the height of the rough filtering holes is increased through the blocking dyke, so that most impurities can be intercepted by the blocking dyke when impurities and water flow along the surface of the rough filtering film, and the impurities are difficult to accumulate on the surface of the rough filtering holes.

Preferably, the rough filtering holes are conical round holes, and the edges of the rough filtering holes far away from the blocking dykes are rounded, so that when water flows pass through the rough filtering holes from outside to inside, the pressure of the water flows is reduced, and the water flows and fine impurities mixed in the water flows are prevented from bursting through the fine filtering net due to the fact that the pressure of the water flows is too high.

Preferably, the prefilter is made of hard polytetrafluoroethylene, and the hard prefilter is high in structural strength, easy to form and free from deformation under pressure.

Preferably, the fine filter membrane is made of soft polytetrafluoroethylene materials, and the soft fine filter membrane has strong impact resistance.

Preferably, the side end face of the coarse filtration membrane is provided with folds, and the folding structure increases the filtration area of the coarse filtration membrane, so that the filtration efficiency is improved.

Preferably, the outer protection pipe is in interference connection with the inner support pipe, so that the outer protection pipe is convenient to detach and clean the inside of the filter material.

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

1. according to the utility model, the blocking dyke is arranged on the outer end surface of the rough filtering hole, so that most impurities can be intercepted by the blocking dyke when impurities and water flow along the surface of the rough filtering film, the impurities are difficult to accumulate on the surface of the rough filtering hole, and the probability of blocking the rough filtering film by the impurities is greatly reduced.

2. According to the utility model, through the rough filtering hole structure with the conical structure, the flow velocity of water flow is reduced when the water flow passes through the rough filtering holes, so that the impact of fine particles mixed in the water flow on the fine filtering film is reduced, and the overall service life of the equipment is prolonged.

3. According to the utility model, through the structure of the outer protective tube and the inner support tube which are connected in an interference manner, the outer protective tube is convenient to detach and clean the inside of the filter material.

Drawings

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

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a top view of the present utility model;

FIG. 4 is an enlarged view of FIG. 3A in accordance with the present utility model;

fig. 5 is a side cross-sectional view of the present use novel.

In the figure: 1 inner supporting tube, 2 fine filter membrane, 3 coarse filter membrane, 31 coarse filter hole, 311 blocking dyke and 4 outer protecting tube.

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 to 5, a polytetrafluoroethylene double-membrane composite filter material in the drawings comprises an inner support tube 1, a fine filter membrane 2, a rough filter membrane 3 and an outer protection tube 4, wherein the inner support tube 1 and the outer protection tube 4 are hollow structures, the fine filter membrane 2 is glued on the outer end face of the inner support tube 1, the rough filter membrane 3 is sleeved on the inner end face of the fine filter membrane 2, the outer protection tube 4 is sleeved on the outer end of the rough filter membrane 3, rough filter holes 31 are formed in the rough filter membrane 3, and blocking dykes 311 are arranged at the edges of the outer end faces of the rough filter holes 31.

The blocking dyke 311 is a truncated cone-shaped hollow bulge, and the height of the rough filtering holes 31 is increased through the blocking dyke 311, so that most impurities can be intercepted by the blocking dyke 311 when impurities and water flow along the surface of the rough filtering film 3, and the impurities are difficult to accumulate on the surface of the rough filtering holes 31.

The rough filtering holes 31 are conical round holes, and the edges of the rough filtering holes 31 far away from the blocking dykes 311 are rounded, so that when water flows pass through the rough filtering holes 31 from outside to inside, the pressure of the water flow is reduced, and the water flow and fine impurities mixed in the water flow are prevented from bursting through a fine filtering net due to the fact that the pressure of the water flow is too high.

The coarse filtration membrane 3 is made of hard polytetrafluoroethylene materials, the hard coarse filtration membrane 3 has high structural strength and is easy to form, and the deformation can not occur under pressure.

The fine filter membrane 2 is made of soft polytetrafluoroethylene materials, and the soft fine filter membrane 2 has strong impact resistance.

The lateral end face of the coarse filtration membrane 3 is provided with folds, and the folding structure increases the filtration area of the coarse filtration membrane 3, so that the filtration efficiency is improved.

The outer protection tube 4 is in interference connection with the inner support tube 1, so that the filter material can be conveniently cleaned by disassembling the outer protection tube 4.

The filter material is used when: the filter material and a pipeline inserted into water or gas to be filtered are sequentially led to pass through the outer protective tube 4, the rough filter film 3, the fine filter film 2 and the inner support tube 1, and the inner end surface of the inner support tube 1 flows out, when the medium to be filtered passes through the rough filter film 3, impurities are intercepted at the top of the blocking dyke 311 due to the blocking dyke 311 on the surface, the impurities are difficult to be accumulated at the top of the blocking dyke 311 due to small contact area, dust and gravel in the medium are filtered through the rough filter hole 31, suspended matters are filtered through the fine filter film 2, and when a small amount of tiny dust and gravel pass through the rough filter hole 31 in China, the rough filter hole 31 is of a conical structure, so that the impact of tiny particles mixed in water flow on the fine filter film 2 is reduced, and the whole service life of equipment is prolonged.

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 polytetrafluoroethylene double-membrane composite filter material, comprising:

interior stay tube (1), smart filter membrane (2), coarse filtration membrane (3) and outer protective tube (4), interior stay tube (1) and outer protective tube (4) are hollow out construction, outer terminal surface including support tube (1) is glued to smart filter membrane (2), inner terminal surface at smart filter membrane (2) is established to coarse filtration membrane (3) cover, outer protective tube (4) cover is established in the outer end of coarse filtration membrane (3), be provided with coarse filtration hole (31) on coarse filtration membrane (3), the outer terminal surface edge of coarse filtration hole (31) is provided with and blocks dyke (311).

2. The polytetrafluoroethylene dual membrane composite filter material of claim 1, wherein: the blocking dyke (311) is a truncated cone-shaped hollow bulge.

3. The polytetrafluoroethylene dual membrane composite filter material of claim 1, wherein: the rough filtering holes (31) are conical round holes, and edges of the rough filtering holes (31) far away from the blocking dykes (311) are rounded.

4. The polytetrafluoroethylene dual membrane composite filter material of claim 1, wherein: the rough filter membrane (3) is made of hard polytetrafluoroethylene materials.

5. The polytetrafluoroethylene dual membrane composite filter material of claim 1, wherein: the fine filter membrane (2) is made of soft polytetrafluoroethylene materials.

6. The polytetrafluoroethylene dual membrane composite filter material of claim 1, wherein: the lateral end face of the rough filter film (3) is provided with folds.

7. The polytetrafluoroethylene dual membrane composite filter material of claim 1, wherein: the outer protection tube (4) is in interference connection with the inner support tube (1).