KR101061581B1 - Sealing filter - Google Patents

Abstract

Sealing filter is disclosed. The filtration media for filtering foreign matters of the fluid, the case for supporting the filtration media, the case formed with a penetrating portion, the sealing filter including a sealing portion provided on the outer periphery of the case, it is possible to omit the installation of a separate sealing member to facilitate maintenance.

Filter, sealing, decompression

Description

Sealing filter {Sealing-filter}

The present invention relates to a sealing filter.

Thin Film Transistor-Liquid Crystal Display (LCD) refers to a liquid crystal display device used in various electronic devices.

In general, LCDs inject liquid crystals, which are intermediates between solid and liquid, between two thin glass plates, and change the arrangement of liquid crystal molecules by the voltage difference between the glass electrodes to generate contrast, and display numbers, images, and the like. .

As a method of injecting a liquid crystal into an LCD, a vacuum injection method using a pressure difference is mainly used. Vacuum injection method is a method of removing the air in the liquid crystal using a vacuum, and injecting the liquid crystal using a pressure difference.

Here, a filter is installed to remove foreign substances of the liquid crystal injected into the LCD, the filter is mainly installed in the conduit through the liquid crystal. Accordingly, during maintenance, a process of disassembling a part of the conduit and installing the sealing member together with the filter is required.

In this case, since the sealing member is also replaced every time the filter is replaced, the work becomes complicated and there is a problem in that additional cost is required due to the replacement of the sealing member.

In addition, the vacuum injection method in which the liquid crystal is injected by using the pressure difference imposes a strain on the filter which removes foreign substances in the liquid crystal due to the pressure difference. Therefore, the filtration media is frequently damaged by pressure, and the replacement of the filter delays the entire manufacturing process, resulting in a problem of low productivity.

The present invention provides a sealing filter that facilitates maintenance of the filter.

In addition, the present invention is to provide a sealing filter that minimizes the damage caused by the pressure difference.

According to an aspect of the present invention, there is provided a sealing filter including a filtration media for filtering foreign substances in a fluid, a case supporting the filtration media and having a through portion formed therein, and a sealing portion provided on an outer circumference of the case.

The case and the sealing part may be integrally formed.

The sealing portion may have an outer circumferential surface formed in a convex shape.

The sealing part may be made of any one of stainless steel, high rigid metal, Teflon, rubber, and elastomer.

The sealing part may be detachable from the case.

A seating groove is formed on an outer circumferential surface of the case, and the sealing part may be seated in the seating groove.

The case may be made of any one of stainless steel, high rigidity metal, Teflon, rubber and elastomer.

The sealing part may include any one of Teflon, rubber, and elastomer.

The apparatus may further include a pressure reducing member accommodated in the case penetrating part and provided with a pressure reducing mesh to reduce the pressure of the fluid flowing into the filtering media.

It may further include a spacer interposed between the filter media and the pressure reducing member, the through-hole is formed through which the fluid passes.

The filter medium or the pressure-sensitive member may further include a close contact member for pressing by the spacer.

The spacer or the adhesive member may be any one of Teflon, polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polyvinylidene fluoride (PVDF, Polyvinylidene fluoride), and high density polyethylene (HDPE, High-density polyethylene). It can be made, including.

In one opening of the case, a step portion for supporting the filtering media may be formed.

Sealing filter according to the present invention, by eliminating the installation of a separate sealing member to facilitate maintenance.

In addition, the present invention can minimize the damage of the sealing filter due to the pressure difference by reducing the pressure of the fluid to be filtered.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a sealing filter 100 according to a first embodiment of the present invention, Figure 2 is an exploded perspective view showing a sealing filter 100 according to a first embodiment of the present invention.

Sealing filter 100 according to an embodiment of the present invention includes a filtration media 110, the case 140 and the sealing unit 145.

The filtration media 110 is a part for filtering foreign matter in the fluid. To this end, a plurality of micropores are formed in the filtration media 110 to filter foreign matter from the fluid. Specifically, the filtration media 110 may be a membrane made of a thin membrane having a plurality of fine pores, or may be a strainer in which a mesh of dense size is formed.

In the present embodiment, the filter media 110 uses a membrane having a plurality of micropores for removing foreign matters from the liquid crystal.

The case 140 is a portion supporting the filtration media 110 so that the filtration media 110 can be installed on the transfer path of the fluid. A through portion 142 is formed in the case 140 to allow the fluid to pass therethrough. It is.

In addition, the sealing part 145 is a part which prevents the fluid from leaking in the part in which the sealing filter 100 is installed, and is provided in the outer periphery of the case 140.

In particular, the case 140 and the sealing part 145 of the present embodiment are formed integrally. That is, since the outer circumferential surface of the case 140 is formed of the sealing unit 145, the case 140 serves as a sealing.

Here, the sealing part 145 formed on the outer circumferential surface of the case 140 may be formed in a convex shape. The sealing part 145 formed in the convex shape facilitates close contact between the wall surface and the sealing filter 100.

In addition, the sealing part 145 may be made of a material having high tensile strength such as stainless steel and high rigidity metal to have high durability. In addition, the sealing part 145 may be formed of an elastic material such as Teflon, rubber, and elastomer, and the adhesion between the wall surface and the sealing filter 100 may be improved.

As shown in Figure 3, the connection portion of the conduit in which the sealing filter 100 is installed, the sealing filter 100 is fitted inside the first conduit 10 is tightly coupled. Then, the second conduit 20 is coupled to the first conduit 10 to complete the installation of the sealing filter 100. The sealing portion 145 formed in the convex shape is in close contact with the wall surface of the first conduit 10 serves to prevent the fluid from falling into the connecting portion of the first conduit 10 and the second conduit 20. Therefore, since a separate sealing member is not required for the filter installation, the filter installation is facilitated.

Meanwhile, in the present embodiment, the filtration media is accommodated in the penetrating portion 142 of the sealing case 140. In addition, the spacer 130 and the pressure reducing member 120 may also be stacked in order to be accommodated.

Decompression member 120 is a portion for dispersing or reducing the pressure of the fluid flowing into the filter media (110). To this end, the decompression member 120 is formed with a decompression mesh 122 of the body structure.

In detail, the pressure reducing member 120 serves as a diffuser for allowing the pressure of the fluid not to be concentrated on a portion of the filtration media 110 but evenly distributed over the front surface of the filtration media 110. In the case of a highly viscous fluid, such as a liquid crystal, the fluid may be aggregated in the form of droplets and introduced into the sealing filter 100. Accordingly, only a part of the filtration media 110 is in contact with the fluid, and there is a risk of being concentrated under pressure. The decompression mesh 122 of the trunk structure divides the fluids agglomerated in the upstream side of the filter media 110 into small pieces and distributes the fluid evenly to the front surface of the filter media 110. Therefore, the pressure due to fluid filtration plays a role of evenly dispersing the front of the filter media (110).

In addition, the pressure reducing member 120 is installed upstream of the filtration media 110 to act as a fluid resistance to the fluid flowing into the sealing filter 100. Accordingly, the pressure applied to the sealing filter 100 due to the pressure difference between both ends of the sealing filter 100 primarily acts on the pressure reducing part 120. That is, after the pressure of the fluid is reduced by passing through the pressure reducing member 120 is applied to the filter media (110). Therefore, the pressure applied directly to the filtration media 110 can be greatly reduced, thereby preventing damage to the filtration media 110.

In addition, since the decompression member 120 has a mesh structure, it also serves as a pre-sealing filter 100 (pre-filter). Since the decompression member 120 first filters the particles having a relatively large size, the thin film prevents the membrane from being damaged and also prevents the replacement cycle of the sealing filter 100 due to the clogging of micropores.

Here, the pressure reduction member 120 may be made of stainless steel, nylon, polypropylene, and the like that are resistant to corrosion and can withstand high pressures. In particular, stainless steel, nylon and polypropylene can be processed in the form of a thread forming the pressure-sensitive mesh 122, and can withstand strong stress, thereby making it easy to form a mesh structure.

In addition, in order to prevent the pressure reduction member 120 and the filtration media 110 from coming into close contact with the sealing filter 100 of the present embodiment, a spacer 130 is additionally disposed between the pressure reduction member 120 and the filtration media 110. May be interposed.

In order for the pressure reduction member 120 to perform the above-described diffuser function, a space in which the fluid can be spread between the pressure reduction member 120 and the filtration media 110 is required.

On the other hand, if the pressure-sensitive member 120 and the filtration media 110 is in close contact, when the pressure-sensitive member 120 is pushed or deformed toward the filtration media 110 due to the fluid pressure is applied to the pressure-reducing member 120 The pressure is transferred back to the filtration media 110 as it is, there is a risk that the filtration media 110 is damaged. In addition, there is a fear that the flow shock generated due to the fluid resistance of the pressure reducing member 120 is transmitted to the filtration media (110). In particular, since the filtration media 110 of the present embodiment is a thin membrane for filtering the liquid crystal, there is a high risk of breakage upon contact with the decompression member 120.

Accordingly, in the present embodiment, a spacer 130 spaced apart from the pressure reducing member 120 and the filtering media 110 by a predetermined distance is interposed between the pressure reducing member 120 and the filtering media 110. In addition, the through hole 132 is formed in the spacer 130 such that the fluid flows from the pressure reducing member 120 into the filtering media 110. The through hole 132 of the spacer 130 provides a space in which the fluid passing through the decompression mesh 122 of the decompression member 120 is diffused. In addition, the space formed by the through hole 132 prevents the contact between the pressure reduction member 120 and the filtering media 110, and serves to mitigate the impact generated from the pressure reduction member 120.

Here, the spacer 130 may include Teflon. Teflon is a material having excellent chemical resistance and non-adhesiveness, and has no merit for long time use and does not disturb the flow of the fluid. In addition, the Teflon serves to cushion the pressure reducing member 120 and the filtering media 110 as an elastic body to prevent damage to the pressure reducing member 120 and the filtering media 110 due to the flow shock.

In addition, as the spacer 130, various polymer materials such as polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polyvinylidene fluoride (PVDF, Polyvinylidene fluoride), and high density polyethylene (HDPE, high-density polyethylene) It can be used according to this design condition.

Meanwhile, in the present exemplary embodiment, the donut-shaped spacer 130 having the through hole 132 is formed in the center thereof, but the present invention is not limited thereto, and various types of fluids are circulated while supporting the pressure-reducing member 120 and the filtration media 110. It may be modified to form.

In addition, the sealing filter 100 of the present embodiment, a pair of adhesion members 150 and 160 for stably coupling the filtration media 110, the spacer 130, and the pressure reduction member 120 to the case 140 are added. It can be included as. In this embodiment, the pair of contact members 150 and 160 press the filtering media 110 and the pressure-reducing member 120 toward the spacer 130 at both side openings of the case 140, respectively. Accordingly, the filtration media 110 and the pressure-reducing member 120 are in close contact with the spacer 130 and are interposed between the spacer 130 and the contact members 150 and 160, respectively. Here, the contact members 150 and 160 are coupled to the case 140 by fitting or bonding. Therefore, the filtration media 110 and the pressure reduction member 120 may be stably coupled to the sleeve-shaped case 140 while being in close contact with the spacer 130. In addition, the contact members 150 and 160 have flow holes 152 and 162 through which the fluid passes.

Here, the contact members 150 and 160 may be formed with flanges 154 and 164 supported by the sleeve case 140. Accordingly, the contact members 150 and 160 may be prevented from being pushed into the sleeve case 140 due to the pressure of the fluid or the like. Therefore, it is possible to prevent the opposite contact members 150 and 160 from being separated or the filter media 110 and the pressure-reducing member 120 from being compressed and broken due to pressure.

In addition, the contact members 150 and 160 may include Teflon. As described above, Teflon excellent in chemical resistance and non-adhesiveness can also function as an elastic body. Therefore, the filtration media 110 and the pressure-reducing member 120 interposed between the contact members 150 and 160 made of Teflon and the spacer 130 are elastically supported and protected from impact due to flow of the fluid.

In addition, the adhesive members 150 and 160 may include polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polyvinylidene fluoride (PVDF, Polyvinylidene fluoride), and high density polyethylene (HDPE, High-density polyethylene). Various polymer materials can be used depending on the design conditions.

In the above structure, the filtering media 110 is accommodated in the penetrating portion 142 of the case 140 integrated with the sealing unit 145, and the close contact members 150 and 160 are fixed to the filter media 110. An embodiment of the present invention was described. However, the present invention is not limited to this. Hereinafter, other embodiments of the present invention will be described.

4 is a cross-sectional view showing a sealing filter 200 according to a second embodiment of the present invention.

The sealing filter 200 according to the present embodiment is different from the above-described embodiment in that the case 240 may directly support the filtration media 110 or the pressure reduction member 120. Meanwhile, the filtration media 110, the pressure reduction member 120, and the spacer 130 of the present embodiment are the same as the filtration media 110, the pressure reduction member 120, and the spacer 130 of the above-described embodiment. Therefore, hereinafter, the description of the same parts as in the above-described embodiment will be omitted and the description will be mainly focused on differences.

As shown in FIG. 4, a stepped portion 243 protruding toward the center side is formed at one side opening of the case 240 of the present embodiment, and may support the filtration media 110 or the pressure reducing member 120. In addition, the adhesion member 150 may be in close contact with the spacer 130 by pressing the filter media 110 or the pressure reduction member 120 exposed from the other side opening of the case 240. Accordingly, the filter media 110 or the pressure reduction member 120 may be elastically supported through one contact member 150.

5 is a cross-sectional view showing a sealing filter 300 according to a third embodiment of the present invention.

The sealing filter 300 according to the present embodiment is different from the above-described first and second embodiments in that the sealing unit 345 is detachable from the case 340. Meanwhile, the filtration media 110, the pressure reducing member 120, the spacer 130, and the contact members 150 and 160 of the present embodiment are the filtration media 110, the pressure reducing member 120, and the spacer 130 of the above-described embodiment. And the close contact members 150 and 160. Therefore, hereinafter, the description of the same parts as in the above-described embodiment will be omitted and the description will be mainly focused on differences.

As shown in FIG. 5, the sealing part 345 formed as a separate member is coupled to the outer circumferential surface of the case 340. In particular, the mounting groove 344 is formed on the outer circumferential surface of the case 340 of the present embodiment, the sealing portion 345 can be easily coupled to the case 340 by being seated in the mounting groove 344. Accordingly, when the sealing unit 345 is damaged, only the sealing unit 345 may be replaced to use the sealing filter 300 again. Meanwhile, the sealing unit 345 may be coupled to the case 340 by adhesion or the like.

In this case, the case 340 may be made of a material having high tensile strength such as stainless steel or a high rigid metal, or may be made of an elastic material such as Teflon, rubber, and elastomer. Since the case 340 of the elastic material is easily inserted into the conduit through which the fluid passes, the sealing filter 300 may be easily installed.

In addition, the sealing part 345 may be made of an elastic material such as Teflon, rubber, and elastomer (elastomer) to facilitate close contact with the wall surface.

On the other hand, the first to the third embodiments described above is a form in which the filter media 110 is accommodated in the case (100, 200, 300). However, the present invention is not limited thereto, and the filtration media 110 may be attached to and supported by the cases 100, 200, and 300.

Although the above has been described with reference to embodiments of the present invention, those skilled in the art may variously modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. And can be changed.

Many embodiments other than the above-described embodiments are within the scope of the claims of the present invention.

1 is a cross-sectional view showing a sealing filter according to a first embodiment of the present invention.

Figure 2 is an exploded perspective view showing a sealing filter according to a first embodiment of the present invention.

3 is a view showing the installation of a sealing filter according to a first embodiment of the present invention.

4 is a sectional view showing a sealing filter according to a second embodiment of the present invention.

5 is a sectional view showing a sealing filter according to a third embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100, 200, 300: sealing filter

110: filter media

120: pressure reducing member

130: spacer

140, 240, 340: case

145, 245, 345: sealing part

150, 160: contact member

Claims (13)

delete Filtration media for filtering foreign matter in the fluid; A case supporting the filtration media and having a through portion formed therein; And Including a sealing portion provided on the outer periphery of the case, Sealing filter, characterized in that the case and the sealing portion are formed integrally. The method of claim 2, Sealing filter, characterized in that the outer peripheral surface is formed in a convex shape. The method of claim 3, The sealing unit, the sealing filter, characterized in that it comprises any one of stainless steel, high rigidity metal, Teflon (teflon), rubber and elastomer (elastomer). Filtration media for filtering foreign matter in the fluid; A case supporting the filtration media and having a through portion formed therein; And Including a sealing portion provided on the outer periphery of the case, Sealing filter, characterized in that the sealing portion is detachable from the case. The method of claim 5, Mounting grooves are formed on the outer circumferential surface of the case, Sealing filter, characterized in that seated in the seating groove. The method of claim 6, The case is a sealing filter comprising any one of stainless steel, high rigidity metal, Teflon, rubber and elastomer (elastomer). The method of claim 7, wherein The sealing part sealing filter, characterized in that it comprises any one of Teflon, rubber and elastomer (elastomer). The method according to any one of claims 2 to 8, And a pressure reducing member accommodated in the case penetrating portion and provided with a pressure reducing mesh to reduce the pressure of the fluid flowing into the filtering media. 10. The method of claim 9, And a spacer interposed between the filtration media and the pressure reducing member, the spacer having a through hole through which the fluid passes. The method of claim 10, Sealing filter further comprising a close contact member for pressing the filter media or the pressure-sensitive member by the spacer. The method of claim 11, The spacer or the adhesive member may include any one of Teflon, polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polyvinylidene fluoride (PVDF, Polyvinylidene fluoride), and high density polyethylene (HDPE) Sealing filter comprising a. The method of claim 11, Sealing filter, characterized in that the step portion for supporting the filtration media is formed in one opening of the case.

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