KR102651865B1 - Filter gasket - Google Patents

Abstract

The present invention relates to a filter gasket in which each of a first support member and a second support member is stacked and adhered to a connection flange provided in a filter module to improve airtightness and facilitate maintenance of the filter gasket in the filter module. To this end, the filter gasket is a filter gasket surrounding the connection flange of the filter module disposed between the first support member and the second support member, and comprises: a cover contact member surrounding an edge of the connection flange; a lower contact member having elasticity, protruding from a lower end portion of the cover contact member, and stacked between the first support member and the connection flange; an upper contact member having elasticity, protruding from an upper end portion of the cover contact member, and stacked between the second support member and the connection flange; and an insertion groove provided between the lower contact member and the upper contact member, and to which the connection flange is inserted.

Description

Filter gasket {FILTER GASKET}

The present invention relates to a filter gasket, and more specifically, to improve airtightness by stacking the first support member and the second support member in close contact with the connection flange provided in the filter module, and to maintain the filter gasket in the filter module. It relates to a filter gasket to simplify .

For example, the fuel gauge is a device that supplies the mixture required for the engine in the most combustible state under all operating conditions, and is an important device that greatly determines the performance of the engine, especially engine output and economy. The main parts of this fuel system include a carburetor or fuel injection device that mixes fuel properly with air and supplies it to the engine, a fuel tank that stores fuel, a fuel filter that removes moisture and dust in the fuel, and a fuel pump that pumps fuel. It consists of, etc., and these components are connected by fuel pipes.

If foreign substances such as moisture or dust contained in the fuel enter the combustion chamber, it reduces combustion efficiency and accelerates wear of the piston moving part, so a fuel filter must be installed in the fuel system. In this fuel filter, an element is accommodated in a housing, and a head cover is coupled to the housing via a filter gasket to prevent fuel from leaking through the end of the element.

However, in the conventional case, the filter gasket has a structure that is simply laminated on the element in the form of asbestos or O-rings. In the case of asbestos, it is difficult to dispose of waste from the filter gasket, leakage occurs frequently due to the difficulty of horizontal work, and a lot of force must be used to connect the housing and head cover. Additionally, in the case of the O-ring type, a groove for inserting the O-ring must be machined at the end of the element and the head cover, additional costs are incurred due to groove processing, and precise fitting of the O-ring and the groove is required.

Republic of Korea Patent Publication No. 2003-0025338 (Title of invention: Fuel filter gasket for improving airtightness of fuel filter, published on March 29, 2003)

The purpose of the present invention is to solve the conventional problems, improving airtightness by stacking the first support member and the second support member in close contact with the connection flange provided in the filter module, and maintaining the filter gasket in the filter module. A filter gasket is provided to simplify the process.

According to a preferred embodiment for achieving the object of the present invention described above, the filter gasket according to the present invention is a filter gasket surrounding the connection flange of a filter module disposed between a first support member and a second support member, and the connection flange A cover adhesion member surrounding the edge of; a lower adhesion member that has elasticity and protrudes from the lower end of the cover adhesion member and is stacked between the first support member and the connection flange; an upper adhesion member that has elasticity and protrudes from an upper end of the cover adhesion member and is stacked between the second support member and the connection flange; and a fitting groove provided between the lower adhesion member and the upper adhesion member, into which the connection flange is fitted.

A filter gasket according to the present invention is a filter gasket that surrounds a connection flange of a filter module disposed between a first support member and a second support member, and includes a cover adhesion member surrounding an edge of the connection flange; a lower adhesion member that has elasticity and protrudes from the lower end of the cover adhesion member and is stacked between the first support member and the connection flange; an upper adhesion member that has elasticity and protrudes from an upper end of the cover adhesion member and is stacked between the second support member and the connection flange; a fitting groove provided between the lower contact member and the upper contact member, into which the connection flange is fitted; and a close contact ring including at least one of a first ring portion protruding from the lower close contact member toward the first support member and a second ring portion protruding from the upper close contact member toward the second support member. Includes.

A filter gasket according to the present invention is a filter gasket that surrounds a connection flange of a filter module disposed between a first support member and a second support member, and includes a cover adhesion member surrounding an edge of the connection flange; a lower adhesion member that has elasticity and protrudes from the lower end of the cover adhesion member and is stacked between the first support member and the connection flange; an upper adhesion member that has elasticity and protrudes from an upper end of the cover adhesion member and is stacked between the second support member and the connection flange; a fitting groove provided between the lower contact member and the upper contact member, into which the connection flange is fitted; and a grounding member electrically connecting at least one of the first support member and the second support member to the connection flange.

A filter gasket according to the present invention is a filter gasket that surrounds a connection flange of a filter module disposed between a first support member and a second support member, and includes a cover adhesion member surrounding an edge of the connection flange; a lower adhesion member that has elasticity and protrudes from the lower end of the cover adhesion member and is stacked between the first support member and the connection flange; an upper adhesion member that has elasticity and protrudes from an upper end of the cover adhesion member and is stacked between the second support member and the connection flange; a fitting groove provided between the lower contact member and the upper contact member, into which the connection flange is fitted; a contact ring including at least one of a first ring part protruding from the lower contact member toward the first support member and a second ring part protruding from the upper contact member toward the second support member; and a grounding member electrically connecting at least one of the first support member and the second support member to the connection flange.

Here, the grounding member includes a close connection part electrically connected to the connection flange in the fitting groove; and a wing connection part extending from the close connection part and electrically connected to at least one of the first support member and the second support member.

Here, the close connection part includes at least one of a lower connection part electrically connected to the lower part of the connection flange in the fitting groove and an upper connection part electrically connected to the upper part of the connection flange in the fitting groove, The wing connection part extends from at least one of the lower connection part and the upper connection part.

Here, the close connection part includes a lower connection part electrically connected to the lower part of the connection flange in the fitting groove; An upper connection part electrically connected to the upper part of the connection flange in the fitting groove; and a connection connection part that electrically connects the lower connection part and the upper connection part in the fitting groove, wherein the wing connection part extends from the lower connection part and the upper connection part, respectively.

Here, at least one of the first support member and the second support member is provided with a close contact groove portion into which part or all of the close contact ring is fitted.

In one example of the present invention, at least one of the cover adhesion member, the upper adhesion member, and the lower adhesion member includes a support made of perfluoroelastomer; A fiber composite layer laminated on the support; And it may include a surface layer laminated on the fiber composite layer. Here, the fiber composite layer includes a network-structured glass fiber layer in which glass fibers are formed in a mesh shape on the support and include a plurality of pores; and an adhesive applied on the glass fiber and filled in the void.

According to the filter gasket according to the present invention, airtightness is improved as the first support member and the second support member are each laminated and closely adhered to the connection flange provided in the filter module, and maintenance of the filter gasket in the filter module can be simplified. . In addition, recycling of waste rubber protects the environment, reduces costs, shortens work time, makes horizontal work easier, and prevents leakage.

In addition, the present invention can maintain the contact point stably even if distortion occurs through the additional configuration of the contact ring.

In addition, the present invention makes it possible to clearly fit the preset close contact groove and the positioned contact ring through the additional configuration of the close contact groove and improve the close contact force.

In addition, the present invention can prevent static electricity in the filter module by grounding the filter module to at least one of the first support member and the second support member through the additional configuration of the grounding member, and extend the life of the filter module. .

In addition, the present invention can easily ground at least one of the first support member and the second support member to the connection flange through the detailed connection relationship of the ground members.

In addition, the present invention can stably maintain the adhesion between the connection flange and the lower adhesion member and the adhesion between the connection flange and the upper adhesion member in the fitting groove through the detailed coupling relationship and elastic force of the grounding member.

In addition, the present invention facilitates the coupling of the grounding member and the connection flange through the "ㄷ" shape of the close connection portion, and the cover contact member, upper close contact member, and lower close contact member can stably surround the connection flange and the close connection portion.

Figure 1 is a perspective view showing a filter gasket according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA' of FIG. 1.
Figure 3 is a cross-sectional view showing the assembled state of the filter gasket according to the first embodiment of the present invention.
Figure 4 is an exploded view of Figure 3.
Figure 5 is a cross-sectional view taken along line AA' of Figure 1 to the filter gasket according to the second embodiment of the present invention.
Figure 6 is a cross-sectional view taken along line AA' of Figure 1 to the filter gasket according to the third embodiment of the present invention.

Hereinafter, the filter gasket according to the present invention will be described in detail with reference to the attached drawings.

The drawings described in this specification are provided as examples to enable the idea of the present invention to be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the presented drawings and may be embodied in other forms, and the drawings may be exaggerated to clarify the spirit of the present invention.

Unless otherwise defined, the technical and scientific terms used in this specification have the meanings commonly understood by those skilled in the art to which this invention pertains, and the gist of the present invention is summarized in the following description and accompanying drawings. Descriptions of known functions and configurations that may unnecessarily obscure are omitted.

In some cases in this specification, in order to avoid ambiguity of the concept of the present invention, well-known structures and devices may be omitted or may be shown in block diagram form focusing on the core functions of each structure and device.

'Include' mentioned in this specification is an open description that has the same meaning as expressions such as 'comprises', 'contains', 'has', 'characterized by', etc., and includes elements that are not additionally listed, Does not exclude materials or processes.

The singular form of the terms used in this specification may be interpreted to also include the plural form unless otherwise specified.

When components such as 'membrane', 'film', 'layer', and 'area' mentioned in this specification are said to be on or on other components, not only when they are in contact with other components and directly above them, but also in the middle between them. This also includes cases where other components are included.

The term “layer” used in this specification means that each material forms a continuum and has a relatively small thickness compared to the width and length. Accordingly, the term “layer” in this specification should not be interpreted as a two-dimensional flat plane.

The term “line” mentioned in this specification means that each material forms a continuum and has relatively small dimensions in terms of width and height compared to length.

Numerical ranges as used herein include lower and upper limits and all values within that range, increments logically derived from the shape and width of the range being defined, all doubly defined values, and upper and lower limits of numerical ranges defined in different forms. Includes all possible combinations of Additionally, unless specifically defined in the specification of the present invention, values outside the numerical range that may occur due to experimental error or rounding of values are also included in the defined numerical range.

The unit of ‘%’ used without special mention in this specification means ‘% by weight’ unless otherwise defined.

From now on, the filter gasket (G) according to the first embodiment of the present invention will be described.

The filter gasket (G) according to the first embodiment of the present invention surrounds the filter module (F). The filter module (F) is coupled to a filter member (F1) having a hollow tube shape as shown in FIGS. 3 and 4, and one end of the filter member (F1) so that the open one end of the filter member (F1) is closed. It may include a closing cap (F2) and a connection flange (F3) coupled to the other end of the filter member (F1) so that the other end of the opened filter member (F1) is opened. The filter member F1 can filter foreign substances from gas or liquid through various known forms. The connection flange (F3) may be conductive through various known forms.

Here, the connection flange (F3) has a hollow plate shape and protrudes outward from the other end of the filter member (F1). Accordingly, it is preferable that the filter gasket (G) according to the first embodiment of the present invention surrounds the connection flange (F3) provided in the filter module (F).

The filter gasket (G) according to the first embodiment of the present invention is disposed between the first support member (S) and the second support member (D).

The first support member (S) is fitted with a filter module (F) as shown in FIGS. 3 and 4. The first support member (S) has a hollow shape. The first support member (S) includes a coupling surface portion on which the filter module (F) is supported, a finishing surface portion spaced apart to face the coupling surface portion, and a peripheral surface portion connecting the coupling surface portion and the finishing surface portion, so that the coupling surface portion and the finishing surface portion are provided. A hollow shape can be expressed by the face portion and the peripheral face portion. A filter passage hole (S1) through which the closing cap (F2) and the filter member (F1) pass is formed on the coupling surface of the first support member (S). A filter gasket (G) according to the first embodiment of the present invention is laminated on the coupling surface of the first support member (S) along the edge of the filter passage hole (S1) and surrounds the connection flange (F3) of the filter module (F). A supported filter support portion (S2) is provided. The filter support portion (S2) may be recessed from the engaging surface portion so that all or part of the filter gasket (G) according to the first embodiment of the present invention can be inserted. The filter support portion (S2) may also be formed on the second support member (D). The peripheral surface of the first support member (S) is provided with an inlet (S3) through which gas or liquid to be filtered is input. The injection port (S3) may be provided on at least one of the coupling surface, finishing surface, and peripheral surface of the first support member (S).

The second support member (D) is laminated on the first support member (S) as shown in FIGS. 3 and 4. The second support member (D) takes the form of a hollow plate laminated on the coupling surface of the first support member (S). The second support member (D) is provided with an outlet (D1) through which filtered gas or liquid passes. The outlet (D1) communicates with the connection flange (F3) and the filter member (F1).

And the coupling surface portion of the first support member (S) and the second support member (D) may be coupled with a separate fastening member (not shown). Since the filter gasket (G) according to the first embodiment of the present invention is compressed according to the combination of the first support member (S) and the second support member (D), the first support member (S) and the connection flange (F3) It can be airtight between and between the second support member (D) and the connection flange (F3).

At least one of the first support member (S) and the second support member (D) may be conductive through various known forms.

The filter gasket (G) according to the first embodiment of the present invention is fitted with a cover adhesion member (1), a lower adhesion member (3), and an upper adhesion member (2), as shown in FIGS. 1 and 2. It may include a groove (4).

The cover adhesion member (1) surrounds the side edge of the connection flange (F3). The cover adhesion member 1 preferably has elasticity. Although not shown, a cover air layer is formed inside the cover adhesion member 1 to facilitate elastic deformation of the cover adhesion member 1.

The lower adhesion member 3 is protruding from the lower end of the cover adhesion member 1. The lower adhesion member (3) is stacked between the first support member (S) and the connection flange (F3). The lower adhesion member 3 preferably has elasticity. Although not shown, a lower air layer is formed inside the lower adhesion member 3 to facilitate elastic deformation of the lower adhesion member 3. The lower air layer communicates with the cover air layer to facilitate molding.

The upper adhesion member (2) is formed to protrude from the upper end of the cover adhesion member (1). The upper adhesion member (2) is laminated between the second support member (D) and the connection flange (F3). The upper adhesion member 2 preferably has elasticity. Although not shown, an upper air layer is formed inside the upper adhesion member 2 to facilitate elastic deformation of the upper adhesion member 2. The upper air layer communicates with the cover air layer to facilitate molding.

Then, the cover adhesion member 1, the lower adhesion member 3, and the upper adhesion member 2 exhibit a ring shape and are formed as one piece. For example, the cover adhesion member 1, the lower adhesion member 3, and the upper adhesion member 2 can be integrally molded to have elasticity using waste rubber, known general rubber, plastic, etc.

The fitting groove (4) is provided between the opposing lower adhesion members (3) and upper adhesion members (2). A connection flange (F3) is fitted into the fitting groove (4).

From now on, the filter gasket (G) according to the second embodiment of the present invention will be described.

The filter gasket (G) according to the second embodiment of the present invention, like the filter gasket (G) according to the first embodiment of the present invention, surrounds the connection flange (F3) of the filter module (F) and includes a first support member ( It is disposed between S) and the second support member (D).

As shown in FIG. 5, the filter gasket (G) according to the second embodiment of the present invention includes a cover adhesion member (1), a lower adhesion member (3), an upper adhesion member (2), and a fitting groove (4). ) and a close contact ring (5).

The cover adhesion member (1) surrounds the side edge of the connection flange (F3). The cover adhesion member 1 preferably has elasticity. Although not shown, a cover air layer is formed inside the cover adhesion member 1 to facilitate elastic deformation of the cover adhesion member 1.

The lower adhesion member 3 is protruding from the lower end of the cover adhesion member 1. The lower adhesion member (3) is stacked between the first support member (S) and the connection flange (F3). The lower adhesion member 3 preferably has elasticity. Although not shown, a lower air layer is formed inside the lower adhesion member 3 to facilitate elastic deformation of the lower adhesion member 3. The lower air layer communicates with the cover air layer to facilitate molding.

The upper adhesion member (2) is formed to protrude from the upper end of the cover adhesion member (1). The upper adhesion member (2) is laminated between the second support member (D) and the connection flange (F3). The upper adhesion member 2 preferably has elasticity. Although not shown, an upper air layer is formed inside the upper adhesion member 2 to facilitate elastic deformation of the upper adhesion member 2. The upper air layer communicates with the cover air layer to facilitate molding.

Then, the cover adhesion member 1, the lower adhesion member 3, and the upper adhesion member 2 exhibit a ring shape and are formed as one piece. For example, the cover adhesion member 1, the lower adhesion member 3, and the upper adhesion member 2 can be integrally molded to have elasticity using waste rubber, known general rubber, plastic, etc.

The fitting groove (4) is provided between the opposing lower adhesion members (3) and upper adhesion members (2). A connection flange (F3) is fitted into the fitting groove (4).

The adhesion ring 5 includes a first ring portion protruding from the lower adhesion member 3 toward the first support member (S), and a first ring portion protruding from the upper adhesion member 2 toward the second support member (D). At least one of the two ring parts is included. Although not shown, a first air layer is formed inside the first ring portion to facilitate elastic deformation of the first ring portion. When the first air layer communicates with the lower air layer, molding can be facilitated. When the first air layer is separated from the lower air layer, the elastic effect can be improved and airtightness can be improved. Although not shown, a second air layer is formed inside the second ring portion to facilitate elastic deformation of the second ring portion. If the second base layer communicates with the upper air layer, molding can be facilitated. When the second air layer is separated from the upper air layer, the elastic effect can be improved and airtightness can be improved.

Although not shown, in the second embodiment of the present invention, part or all of the contact ring 5 is fitted to at least one of the first support member (S) and the second support member (D) to expand the contact surface. It is advantageous to have a close contact groove.

From now on, the filter gasket (G) according to the third embodiment of the present invention will be described.

The filter gasket (G) according to the third embodiment of the present invention surrounds the connection flange (F3) of the filter module (F) like the filter gasket (G) according to the first or second embodiment of the present invention, It is disposed between the first support member (S) and the second support member (D).

As shown in FIG. 6, the filter gasket (G) according to the third embodiment of the present invention includes a cover adhesion member (1), a lower adhesion member (3), an upper adhesion member (2), and a fitting groove (4). ) and a grounding member (6).

The cover adhesion member (1) surrounds the side edge of the connection flange (F3). The cover adhesion member 1 preferably has elasticity. Although not shown, a cover air layer is formed inside the cover adhesion member 1 to facilitate elastic deformation of the cover adhesion member 1.

The lower adhesion member 3 is protruding from the lower end of the cover adhesion member 1. The lower adhesion member (3) is stacked between the first support member (S) and the connection flange (F3). The lower adhesion member 3 preferably has elasticity. Although not shown, a lower air layer is formed inside the lower adhesion member 3 to facilitate elastic deformation of the lower adhesion member 3. The lower air layer communicates with the cover air layer to facilitate molding.

The upper adhesion member (2) is formed to protrude from the upper end of the cover adhesion member (1). The upper adhesion member (2) is laminated between the second support member (D) and the connection flange (F3). The upper adhesion member 2 preferably has elasticity. Although not shown, an upper air layer is formed inside the upper adhesion member 2 to facilitate elastic deformation of the upper adhesion member 2. The upper air layer communicates with the cover air layer to facilitate molding.

Then, the cover adhesion member 1, the lower adhesion member 3, and the upper adhesion member 2 exhibit a ring shape and are formed as one piece. For example, the cover adhesion member 1, the lower adhesion member 3, and the upper adhesion member 2 can be integrally molded to have elasticity using waste rubber, known general rubber, plastic, etc.

The fitting groove (4) is provided between the opposing lower adhesion members (3) and upper adhesion members (2). A connection flange (F3) is fitted into the fitting groove (4).

The grounding member 6 electrically connects at least one of the first support member (S) and the second support member (D) to the connection flange (F3).

The grounding member 6 includes a close connection portion 61 electrically connected to the connection flange F3 in the fitting groove 4, and a first support member S and a second support member ( It includes a wing connection portion 62 that is electrically connected to at least one of D).

For example, as shown in FIG. 6, the close connection part 61 includes a lower connection part 612 electrically connected to the lower part of the connection flange (F3) in a part of the fitting groove 4, and a part of the fitting groove 4. It includes an upper connection part 611 that is electrically connected to the upper part of the connection flange (F3), and a connection connection part 613 that electrically connects the lower connection part 612 and the upper connection part 611 in the fitting groove (4). .

Although not shown, the lower adhesion member 3 may be provided with a lower seating groove into which all or part of the lower connecting portion 612 is inserted, corresponding to the lower connecting portion 612. Additionally, in response to the upper connection portion 611, the upper adhesion member 2 may be provided with an upper seating groove into which all or part of the upper connection portion 611 is inserted. Additionally, in response to the connection connection portion 613, the cover adhesion member 1 may be provided with a connection seating groove into which all or part of the connection connection portion 613 is inserted.

Additionally, the wing connection portion 62 extends from the lower connection portion 612 and the upper connection portion 611, respectively. The wing connecting portion 62 includes a bent wing portion 621 bent at the free end of the lower connecting portion 612 and the upper connecting portion 611, and a device connecting portion 622 flexibly protruding from the bent wing portion 621. may include. The device connection part 622, which is connected to the lower connection part 612 according to the combination of the first support member (S) and the second support member (D), is electrically connected to the filter support part (S2) of the first support member (S). And, the device connection part 622 connected to the upper connection part 611 is electrically connected to the second support member (D).

As a modified example, the close connection part 61 includes a lower connection part 612 that is electrically connected to the lower part of the connection flange (F3) in the fitting groove (4), and a lower connection part (612) electrically connected to the upper part of the connection flange (F3) in the fitting groove (4). It includes at least one of the upper connection parts 611 connected to.

Additionally, the wing connection part 62 extends from at least one of the lower connection part 612 and the upper connection part 611. The wing connection part 62 can be divided into a first connection part extending from the lower connection part 612 and a second connection part extending from the upper connection part 611. The first connection part may include a first bent part bent at an end of the lower connection part 612 and a first wing part flexibly protruding from the first bent part. As the first support member (S) and the second support member (D) are combined, the first wing portion is electrically connected to the filter support portion (S2) of the first support member (S). The second connection part may include a second bent part bent at an end of the upper connection part 611 and a second wing part flexibly protruding from the second bent part. According to the combination of the first support member (S) and the second support member (D), the second wing portion is electrically connected to the second support member (D).

The filter gasket (G) according to the third embodiment of the present invention may further include a contact ring (5) as shown in FIG. 6.

The adhesion ring 5 includes a first ring portion protruding from the lower adhesion member 3 toward the first support member (S), and a first ring portion protruding from the upper adhesion member 2 toward the second support member (D). At least one of the two ring parts is included. Although not shown, a first air layer is formed inside the first ring portion to facilitate elastic deformation of the first ring portion. When the first air layer communicates with the lower air layer, molding can be facilitated. When the first air layer is separated from the lower air layer, the elastic effect can be improved and airtightness can be improved. Although not shown, a second air layer is formed inside the second ring portion to facilitate elastic deformation of the second ring portion. If the second base layer communicates with the upper air layer, molding can be facilitated. When the second air layer is separated from the upper air layer, the elastic effect can be improved and airtightness can be improved.

Although not shown, in the third embodiment of the present invention, at least one of the first support member (S) and the second support member (D) is provided with a part of the adhesion ring (5) to improve airtightness around the ground member (6). Alternatively, it is advantageous to provide a close contact groove into which the entire part is fitted.

According to the above-described filter gasket (G), airtightness is improved as the first support member (S) and the second support member (D) are each laminated and closely adhered to the connection flange (F3) provided in the filter module (F), Maintenance of the filter gasket (G) in the filter module (F) can be easily performed. In addition, recycling of waste rubber protects the environment, reduces costs, shortens work time, makes horizontal work easier, and prevents leakage.

In addition, the contact point can be kept stable even if distortion occurs through the additional configuration of the contact ring (5).

In addition, through the additional configuration of the close contact groove portion, the fit between the preset close contact groove portion and the properly positioned close ring 5 can be made clear and the close adhesion force can be improved.

In addition, the filter module (F) can be grounded to at least one of the first support member (S) and the second support member (D) through the additional configuration of the ground member (6) to prevent static electricity in the filter module (F). and the lifespan of the filter module (F) can be extended.

In addition, at least one of the first support member (S) and the second support member (D) can be easily grounded to the connection flange (F3) through the detailed connection relationship of the ground member (6).

In addition, the adhesion between the connection flange (F3) and the lower adhesion member (3) and the adhesion between the connection flange (F3) and the upper adhesion member (2) in the fitting groove (4) through the detailed connection relationship and elastic force of the grounding member (6). can be kept stable.

In addition, the "ㄷ" shape of the close connection part 61 facilitates the coupling of the grounding member 6 and the connection flange (F3), and the cover close contact member 1, the upper close contact member 2, and the lower close contact member ( 3) can stably surround the connection flange (F3) and the tight connection portion (61).

In a preferred embodiment of the present invention, at least one of the cover adhesion member (1), the upper adhesion member (2), and the lower adhesion member (3) includes a support made of perfluoroelastomer; A fiber composite layer laminated on the support; And it may include a surface layer laminated on the fiber composite layer. In this way, when the adhesion member of the filter gasket is made of a specific material and has a specific laminated structure, the airtightness effect of the specific material and the specific laminated structure is added to the airtightness effect of the mechanical structure described above, resulting in a harsh environment where strong vibrations continuously occur. The initial excellent airtightness performance can be maintained for a long period of time.

The support serves to maintain the structure of the filter gasket, and may preferably be made of, for example, perfluoroelastomer (FFKM, FFPM). When a support made of this material is used, it is resistant to extreme temperatures and chemicals, and changes in permanent compression set can be minimized even at high temperatures for a long period of time.

The average thickness of the support can be appropriately adjusted according to the required specifications of the gasket, and may be, for example, 1 to 50 mm, specifically 1 to 30 mm, and more specifically 1 to 20 mm.

The fiber composite layer includes a network-structured glass fiber layer including a plurality of pores in which glass fibers are formed in a mesh shape on the support; and an adhesive applied on the glass fiber and filled in the void.

The glass fiber layer is formed on the surface of the support in a network structure in which glass fibers form a mesh and include a plurality of pores. The glass fiber used at this time may preferably have an average diameter of 100 to 800 ㎛, and a mesh (pore) size of 0.1 to 3 mm.

The adhesive is applied to the surface of the glass fiber and fills the pores of the glass fiber layer, thereby compensating for the low density of the glass fiber layer to form a fiber composite layer with an appropriate density. This fiber composite layer improves the airtightness of the filter gasket, and in particular, can maintain high elasticity and resilience for a long period of time, and can maintain the initial high airtightness for a long time even in harsh environments where vibration is continuously caused.

As a preferred example, the adhesive may be a polyurethane-based waterproofing agent. By using the polyurethane-based adhesive, the adhesion and airtightness between the lower support and the upper heat-shrinkable film layer, which will be described later, can be further improved.

The amount of the adhesive used may be preferably, for example, a weight per area of 3 to 100 g/m ² , specifically 5 to 60 g/m ² . The weight average molecular weight of the adhesive may preferably be, for example, 500 to 20,000 g/mol, specifically 1,000 to 15,000 g/mol.

The average thickness of the glass fiber layer may be, for example, 0.05 to 3 mm, specifically 0.1 to 1 mm, and the average thickness of the fiber composite layer including the glass fiber layer may be, for example, 0.1 to 3 mm, specifically. As such, it may be preferable to be 0.1 to 1 mm.

As described above, the fiber composite layer is formed of glass fiber and an adhesive. Specifically, after laminating a glass fiber layer on a support, the adhesive is sprayed (applied) on the glass fiber layer and then cured for a certain period of time to form a fiber composite layer. can be formed.

The surface layer serves to surround and protect the fiber composite layer and the heat-shrinkable film layer described later, and, for example, it may preferably be made of perfluoroelastomer (FFKM, FFPM) like the support. When a support made of this material is used, it is resistant to extreme temperatures and chemicals, and changes in permanent compression set can be minimized even at high temperatures for a long period of time.

The average thickness of the surface layer may preferably be, for example, 0.1 to 5 mm, specifically, 0.5 to 3 mm.

For a method of manufacturing an object made of perfluoroelastomer that forms the support and the surface layer, refer to known literature. For example, a support of the desired shape can be manufactured or a layer can be formed by curing a rubber solution in which a perfluorinated rubber raw material and an isocyanate compound are mixed at a weight ratio of 100:10 to 50.

In a preferred example, the adhesion member may further include a heat shrink film layer laminated between the fiber composite layer and the surface layer. The heat shrink film layer is formed to cover the outer surface of the fiber composite layer, and not only ensures that the glass fiber and adhesive of the fiber composite layer are firmly fixed inside the gasket, but also improves the density and structural stability of the gasket. Therefore, even if a large impact is applied to the gasket, distortion and deformation of the laminated structure in which each layer is laminated can be minimized.

The heat shrink film used in the heat shrink film layer is preferably made of polyvinyl chloride. A heat-shrinkable film layer can be formed by covering the outer surface of the fiber composite layer with a heat-shrink film made of polyvinyl chloride and heat-treating it. The heat-shrink film is heat-shrinked by heat and firmly adheres to the fiber composite layer, thereby forming a more stable laminated structure. . The heat treatment temperature is sufficient to allow heat shrinkage of the heat shrinkable film while not causing thermal deformation in other layers, and may be, for example, 70°C or higher, specifically 80°C or higher, and more specifically 80 to 100°C.

The average thickness of the heat shrinkable film layer may be preferably, for example, 20 to 200 ㎛, specifically 30 to 150 ㎛.

In the present invention, the spraying (application) conditions, such as spraying (application) time and spraying (application) method, are such that the subject of spraying (application) can be sufficiently dried or cured, and literature known in the field may be referred to. .

The thickness ratio of the fiber composite layer, the heat shrink film layer, and the surface layer may be preferably, for example, 100:3 to 30:50 to 300. If this is satisfied, excellent airtightness and long-term maintenance of initial airtightness can be expected. The thickness of the support may be appropriately adjusted to suit the required thickness of the gasket.

In this way, the fiber composite layer, the heat shrink film layer, and the surface layer may be sequentially laminated, and the surface layer of this laminate may be formed toward the outside of the gasket. For example, the surface layer may be formed on the outer surface of the gasket in a direction toward the outer surface so that the surface layer becomes the outermost layer. Of course, it may also be formed on the inner surface of the gasket toward the center of the gasket so that the surface layer becomes the outermost layer. That is, the laminate may be formed by surrounding both the outer and inner surfaces of the gasket as the outermost layer, and only the outer surface or the inner surface may be formed.

Of course, the configuration in which the above-described specific material has a specific laminated structure can be equally applied to the cover adhesion member 1, the upper adhesion member 2, or the lower adhesion member 3 as well as the adhesion ring 5.

Hereinafter, embodiments of the filter gasket (G) according to the type of material and its performance will be described in more detail.

A filter gasket (G) including a cover adhesion member (1), an upper adhesion member (2), a lower adhesion member (3), and a fitting groove (4) was manufactured by the following method.

A filter gasket (G), a ring-shaped support body, was manufactured in the shape shown in Figure 1 using perfluoroelastomer (PFE-640, Dongdo Chem Co.). The ring-shaped support has a structure including a cover adhesion member (1), an upper adhesion member (2), a lower adhesion member (3), and a fitting groove (4), and has an outer diameter of 200 mm, an inner diameter of 180 mm, and a thickness of 10 mm. It has a size of mm, the thickness of the upper adhesion member (2) is 1 mm, the thickness of the lower adhesion member (3) is 1 mm, and the thickness and width of the fitting groove (4) are 8 mm and 15 mm, respectively.

A filter gasket (G) was manufactured by the following method by laminating a glass fiber mesh-type sheet on the outer surface of the ring-shaped support of Example 1.

A glass fiber mesh-type sheet (HQM2.5*2.5, HTEX) was cut to the same size as the outer surface and laminated on the outer surface of the ring-shaped support of Example 1. At this time, the laminated glass fiber mesh-type sheet had a mesh size of 2.5 × 2.5 mm and a unit weight of 110 g/m ² . Next, a urethane-based adhesive (Sikalastic U Lining, Sika Korea) was sprayed on the laminated glass fiber mesh-type sheets, and then cured at 25°C for 5 hours to form a fiber composite layer with an average thickness of 1 mm. At this time, the viscosity of the adhesive was adjusted using a diluting solvent so that the urethane-based adhesive sufficiently penetrated into the mesh, that is, the pores, of the glass fiber mesh-type sheet.

A rubber solution containing 70% by weight of perfluororubber raw material (Dyneon, 3M) and 30% by weight of isophorone diisocyanate is applied to the surface (outer and inner surfaces) of the ring-shaped support on which the fiber composite layer is formed and cured for a sufficient time. A filter gasket (G) was manufactured by forming a surface layer with a thickness of 1 mm.

In Example 2, a filter gasket (G) was manufactured by the following method by stacking a heat-shrink film layer between the fiber composite layer and the surface layer.

The outer surface of the ring-shaped support on which the fiber composite layer of Example 2 was formed was wrapped with a polyvinyl chloride heat shrink film (D PVC-HS, Detech EC Co., Ltd.) with an average thickness of 70 ㎛, and then heat treated to form the fiber composite layer. A heat shrink film layer was formed on the outer and inner surfaces of the ring-shaped support. Specifically, the heat shrink film was wrapped to cover both the outer surface of the ring-shaped support on which the fiber composite layer was formed and the inner surface of the ring-shaped support on which the fiber composite layer was not formed, and the end of the heat shrink film was positioned on the inner surface of the ring-shaped support. . Next, hot air at 95° C. was applied to the heat-shrinkable film to cause heat-shrinkage, thereby allowing the heat-shrinkable film to adhere to the fiber composite layer to form a heat-shrinkable film layer. A filter gasket (G) was manufactured by applying a rubber solution to the surface (outer surface and inner surface) of the ring-shaped support on which the hydrothermal side film layer was formed in the same manner as in Example 1 and curing it to form a surface layer.

[Experimental Example 1]

The gas sealing performance of the filter gaskets (G) manufactured in Examples 1 to 3 in harsh environments was tested in the following manner, and the results are shown in Table 1 below.

The filter gasket (G) was mounted on the connection flange (F3) as shown in FIG. 3. Next, the nitrogen gas is fixed at 25 to 30 bar in the primary pressure regulator, then re-set to 25 bar in the secondary pressure regulator, and the gas pressure inside the connection flange (F3) is adjusted to 25 bar at 25°C for a total of 10 Measurements were made over a period of days. At this time, vibration was continuously applied to the connection flange (F3) and filter gasket (G) through a vibration inducing device. When the test was completed, the nitrogen gas inside was discharged through the drain valve, and the gas leakage amount was calculated by measuring temperature, pressure, and measurement time.

Example 1 Example 2 Example 3 Fiber composite layer X O O Heat shrink film layer X X O surface layer X O O Gas leakage (ml/min) 0.00516 0.00247 0.00079

As described above, preferred embodiments of the present invention have been described with reference to the drawings, but those skilled in the art may vary the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. It can be modified or changed.

F: Filter module, F1: Filter member, F2: Closing cap
F3: Connection flange, S: First support member, S1: Filter passage hole
S2: Filter support, S3: Inlet, D: Second support member
D1: outlet
G: Filter gasket, 1: Cover adhesion member, 2: Upper adhesion member
3: Lower adhesion member, 4: Fitting groove, 5: Adhesion ring
6: Ground member, 61: Close connection part, 611: Upper connection part
612: lower connection part, 613: connection connection part, 62: wing connection part
621: bending wing part, 622: device connection part

Claims (7)

delete delete It is a filter gasket that surrounds the connection flange of the filter module disposed between the first support member and the second support member,
a cover adhesion member surrounding an edge of the connection flange;
a lower adhesion member that has elasticity and protrudes from the lower end of the cover adhesion member and is stacked between the first support member and the connection flange;
an upper adhesion member that has elasticity and protrudes from an upper end of the cover adhesion member and is stacked between the second support member and the connection flange;
a fitting groove provided between the lower contact member and the upper contact member, into which the connection flange is fitted; and
A filter gasket comprising: a grounding member electrically connecting at least one of the first support member and the second support member to the connection flange.
It is a filter gasket that surrounds the connection flange of the filter module disposed between the first support member and the second support member,
a cover adhesion member surrounding an edge of the connection flange;
a lower adhesion member that has elasticity and protrudes from the lower end of the cover adhesion member and is stacked between the first support member and the connection flange;
an upper adhesion member that has elasticity and protrudes from an upper end of the cover adhesion member and is stacked between the second support member and the connection flange;
a fitting groove provided between the lower contact member and the upper contact member, into which the connection flange is fitted;
a contact ring including at least one of a first ring part protruding from the lower contact member toward the first support member and a second ring part protruding from the upper contact member toward the second support member; and
A filter gasket comprising: a grounding member electrically connecting at least one of the first support member and the second support member to the connection flange.
According to clause 3 or 4,
The grounding member is,
A close connection part electrically connected to the connection flange in the fitting groove; and
A filter gasket comprising a wing connection part extending from the close connection part and electrically connected to at least one of the first support member and the second support member.
According to clause 5,
The close connection part,
It includes at least one of a lower connection part electrically connected to the lower part of the connection flange in the fitting groove and an upper connection part electrically connected to the upper part of the connection flange in the fitting groove,
The wing connection part,
A filter gasket, characterized in that it extends from at least one of the lower connection part and the upper connection part.
According to clause 3 or 4,
At least one of the cover adhesion member, the upper adhesion member, and the lower adhesion member,
Support made of perfluoroelastomer;
A fiber composite layer laminated on the support; and
It includes a surface layer laminated on the fiber composite layer,
The fiber composite layer is,
A glass fiber layer in which glass fibers are formed in a mesh shape on the support and have a network structure including a plurality of pores; and
A filter gasket comprising: an adhesive applied on the glass fiber and filled in the void.