JP3316645B2 - filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter having a filter medium inside.

[0002]

2. Description of the Related Art FIGS. 9 and 10 show examples of this type of filter. This filter comprises a casing 8 composed of a rectangular parallelepiped frame member 80 serving as a gas passage and a filter medium receiving member 81 provided on the upstream and downstream portions of the frame member 80. The casing 8 has a zigzag cross section. The filter medium 9 is accommodated. Then, the frame member 8
In order to ensure airtightness between the filter medium 9 and the filter medium 9, both side edges of the filter medium 9 and the filter medium receiving member 81 are connected to the upper and lower edges of the filter medium 9 and the frame member 80.
Are adhered to each other.

[0003] Therefore, in this filter, the suspended matter in the gas is the above-mentioned gas, which is referred to as "upstream filter material receiving members 81, 8".
In the course of flowing along a route of “between 1 → the filter medium 9 → the downstream filter medium receiving members 81, 81”, the upstream surface of the filter medium 9 is collected (hereinafter, suspended matter in gas is collected by the filter medium). That is simply called collection). However, in this type of filter, the filter medium 9 and the casing 8 are bonded and integrated as described above, so that the filter medium 9 is in a used state, that is, pressure loss increases due to clogging of the filter medium 9. If the performance deteriorates, the entire filter including the casing 8 must be discarded, and there is a problem that a large amount of industrial waste is generated at the time of replacement.

As one means for solving the above problem, a filter medium 9 is used.
It is conceivable to take the form of exchanging only
It is not easy to create a filter in which the filter medium 9 can be replaced in a short time and the sealing property between the filter medium 9 and the casing 8 can be secured after the replacement of the filter medium 9. Further, in this type of filter, another filter for previously collecting suspended particles having a certain particle diameter or more in advance may be disposed close to the upstream side, and the upstream side It is often difficult to replace the filter medium 9 from the space. Therefore, it is desired to replace the filter medium 9 from the downstream side of the filter which is advantageous in terms of space.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a filter which can exchange a filter medium from a downstream side in a short time and which exhibits a collecting function even after the exchange of the filter medium.

[0006]

In order to solve the above-mentioned problems, the present invention employs the following technical means. The filter according to the present invention comprises a frame member 1 formed by an opposing pressure plate 11 capable of maintaining a state of approaching / separating from an opposing fixing plate 10 and having a filter medium receiving portion 12 on the upstream side of the fixing plates 10. A filter member 2 having a gas seal member S over the entire outer edge portion and accommodated to close a gas flow path formed by the frame member 1, and being detachably attached to a downstream side surface of the frame member 1; And a filter medium holding member 40 capable of maintaining the mounted state. When the pressing plates 11 and 11 are brought close to each other and the filter medium holding member 40 is mounted on the frame member 1, the distance between the frame member 1 and the filter medium 2 is reduced. Are made airtight by the gas seal member S.

Further, the filter according to the present invention is formed by an opposing pressure plate 11 capable of maintaining an approaching / separating state with the opposing fixed plate 10, and a filter medium receiving member is provided on the upstream side of the both fixed plates 10. A frame member 1 having a portion 12,
A filter medium 2 ′ having a gas seal member S over the entire outer edge and containing a plurality of filter members 2 ′ to close a gas flow path formed by the frame member 1.
And a filter material pressing member 4 which is detachably attached to the downstream side surface of the frame member 1 and can maintain the attached state.
0, and when the pressing plates 11 and 11 are brought close to each other and the filter medium pressing member 40 is mounted on the frame member 1, the outer peripheral edge of each filter medium 2 ′ is pressed against the pressing plate 11 and the filter medium receiving section 12. Wherein the pressure contact position is air-tight through the gas seal member S.

[0008]

The present invention has the following functions. This filter has a frame member 1 and a filter medium 2 similar to those described in the conventional section.
Is not adhered, the filter medium 2 can be easily removed from the downstream side only by detaching the filter medium pressing member 40 from the frame member 1 and separating the pressing plates 11 and 11 from each other.

When a new filter medium 2 is mounted, the filter medium 2 is accommodated in the frame member 1 with the filter medium pressing member 40 being separated from the frame member 1 and the pressing plates 11 and 11 being separated from each other. Thereafter, the pressing plates 11 and 11 are brought close to each other, and the filter medium pressing member 40 is mounted on the frame member 1. Then, the whole area between the frame member 1 and the filter medium 2 is made airtight by the gas seal member S, and the installation of the new filter medium 2 is completed.

As described above, in this filter, the filter medium 2 can be replaced in a short time from the downstream side, and also exhibits a collecting function even after the replacement of the filter medium 2. With respect to other filters of the present invention, the filter medium 2 can be exchanged from the downstream side in a short time and exhibits a collecting function even after the exchange of the filter medium 2 in the same manner as the filter of the present invention. In a state where the pressure plates 11 and 11 are brought close to each other and the filter medium holding member 40 is mounted on the frame member 1, a gas seal is formed between the entire outer edge of each filter medium 2 ′ and the pressure plate 11 and the filter medium receiving section 12. An airtight state is established via the member S.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. As shown in FIGS. 1 and 2, in the filter of this embodiment, a filter medium 2 having a W-shaped cross section is used. The overall basic structure is a frame member 1 having a rectangular parallelepiped opening, and a frame member. 1 comprises a shape retaining member 3 and a frame lid member 4.

As shown in FIG. 1, the frame member 1 is formed by left and right fixing plates 10 and upper and lower pressing plates 11, and the upper pressing plate 11 is fixed only within a certain range with the upstream side of the frame member 1 as a fulcrum. It has a structure that can swing and separate from the lower pressure plate 11. It should be noted that any known structure for swinging the pressure plate 11 can be employed. FIG.
As shown in FIG. 1, a filter medium receiving portion 12 that protrudes inward from the upstream side of the fixing plate 10 is provided.

As shown in FIG. 5, the filter medium 2 is a sheet-like or sheet-like one 20 which is zigzag-folded to a fixed width W, and the ridges and valleys and the valleys are fixed so as not to be displaced. Is further bent into a V-shape or its continuous shape (see FIGS. 1 and 2). The fixing between the folded ridges is performed by connecting them with a resin, a polymer, a plastic, an adhesive thereof, a thread such as hot melt or glass, or a thread-like or narrow material 21. Further, a reinforcing band 22 is attached to each of the bent portions (each V-shaped portion) of the filter medium 2 so as to prevent the filter medium 20 from being damaged at the time of gas pressure action or work. The filter medium is V
It may be either a combination of letter-shaped units or a W-shaped one, but it is assumed to be one continuous piece.

As shown in FIG. 1, a gas seal member S (for example, resin, polymer, rubber, etc., Comprising a foamed material of the composition of the above, urethane foam having elasticity, polyethylene foamed material),
The height of the filter medium 2 plus the gas seal member S is set to be slightly larger than the distance between the pressing plates 11, 11 in a parallel state.

As shown in FIGS. 1 and 2, the shape-retaining member 3 is composed of a support member 30 and a contact member 31 provided between the upper and lower pressing plates 11 in accordance with the shape of the filter medium 2 to be inserted. You. The support member 30 may be attached to the frame member 1 in the vertical direction or may be erected on the lower pressure plate 11. As shown in FIG. 2, the shapes of the shape retaining member 3 and the filter medium 2 are such that the upstream side surface of the filter medium 2 is along the contact member 31 in a state where the filter medium 2 is properly accommodated in the frame member 1. You have set. Each member of the filter can be selected from a group of materials having use resistance according to the respective purposes. For example, it is a flammable material that is a composite material or a hardened material made of steel, metal such as aluminum and stainless steel, plastics, wood, paper, and the like, as well as cloth, yarn, and fiber. You may.

As shown in FIG. 1, the frame lid member 4 includes an upright piece 42.
In the inner region of the frame main body 41 having a three-stage, a three-stage V-shaped filter medium pressing member 40 is provided in two rows. And the pressure plate 11,
By fitting the frame cover member 4 on the downstream side of the frame member 1 in a state where the members 11 are parallel to each other, the upper pressing plate 11 can be held down by the upright pieces 42. Incidentally, the frame member 1 and the frame lid member 4 can be connected to each other with bolts and nuts or the like. However, in this embodiment, a stopper hole 71 (female) is formed in the frame lid member 4. Upper and lower pressure plates 1
Stop projections 70 (males) are provided on the frame members 1 and 11, respectively, and when the frame cover member 4 is pushed into the frame member 1, the projections 70 are fitted into the stop receiving holes 71, and the stopper cover holes 71 of the frame cover member 4 are one-touched. Installation is completed. Thereby, the attachment state of the filter medium holding member 40 to the frame member 1 is maintained. Since the frame cover member 4 is present downstream of the filter medium 2 and is acted on by gas pressure, the strength of the stopper projection 70 and the stopper receiving hole 71 is set so as to sufficiently withstand the gas pressure.

Since the filter of this embodiment is configured as described above, the filter medium 2 can be replaced from the downstream side in the following manner. (When removing the old filter medium 2) First, as shown in FIG. Then, based on the dimensional relationship between the height of the filter medium 2 and the gas seal member S plus the distance between the press plates 11 and 11 in a parallel state, the gas seal member S is elastically restored, and the upper press plate 11 is turned into the upper press plate 11 shown in FIG. As shown in FIG. Next, as shown in FIG.
The filter medium 2 in the attached state is withdrawn to the downstream side. At the time of this removal, the upper pressing plate 11 is pushed up, and the holding force from the upper and lower pressing plates 11 does not act on the filter medium 2, so that the filter medium 2 can be easily pulled out without requiring a large force. (When a new filter medium 2 is installed) First, the filter medium 2 is pushed into the frame member 1 from the downstream opening to be attached to the hitting member 31 of the shape-retaining member 3, and then the upper pressing plate 11 is moved downward. Is forcibly pushed down in a manner of swinging until it becomes parallel to the pressure plate 11. In this embodiment, the distance between the upper and lower surfaces of the filter medium 2 and the upper and lower pressure plates 11 is determined by the relationship between the height of the filter medium 2 and the gas seal member S plus the distance between the pressure plates 11 and 11 in a parallel state. The seal member S is in an airtight state (see FIG. 3). Subsequently, when the frame lid member 4 is fitted to the downstream side of the frame member 1, as shown in FIG. Airtightness between both edges of the filter medium 2 and the filter medium receiving portion 12 is ensured via the gas seal member S provided on the surface.

In this filter, when gas pressure acts on the filter medium 2, the pressure contact force between both edges of the filter medium 2 and the filter medium pressing member 40 is increased, and the airtightness between them is further improved. As described above, the filter of this embodiment allows the replacement of the filter medium 2 from the downstream side and is very simple, and exhibits a sufficient collecting function even after the replacement of the filter medium 2.

In the above embodiment, the pressing plates 11, 11
The approach and separation from each other are realized by the swinging of the upper pressure plate 11, but the present invention is not limited to this.
As shown in the figure, a middle plate 11a (corresponding to the upper pressing plate 11 in the column of means) is provided in the casing K so as to be vertically movable,
This may be realized by moving the pressing tool 60 rotatably attached to the casing K side from the two-dot chain line position in FIG. 6 to the solid line position (vertical direction). In this case, a projection (not shown) is provided on the frame lid member 4, and a stopper hole (not shown) is provided on the middle plate 11 a so that the frame lid member 4 is fitted into the frame member 1. The filter medium 2 is fitted into the stopper receiving hole, and mechanically prevents the movement of the filter medium 2 in the downstream direction when the gas pressure is applied. However, instead of the above-described method, the center of the fixing member 10 of the frame member 1 in the vertical direction between the fixing plate 10 and the frame lid member 4 is fixed with, for example, bolts and nuts (not shown), so that the filter medium 2 is moved in the downstream direction. Movement may be more firmly blocked.

When a filter having the vertically movable middle plate 11a is used, even if the filter is stacked vertically and horizontally to form a single large-area filter, the used filter medium 2 in each filter must be replaced by pressing. It can be easily performed from the downstream side by swinging the tool 60 and attaching and detaching the bolt and the nut. In the above embodiment, the filter medium 2 has a W-shaped cross section. However, as shown in FIG. 7, the filter medium 2 may be composed of two V-shaped filter mediums 2 '. In this case, each filter medium 2' The gas seal member S may be provided on the entire outer edge of the filter member 2, that is, on the upper and lower V-shaped surfaces and both side edges of each filter medium 2 ′.

Further, in place of the filter medium holding member 40 of the above-described embodiment, a network member having two V-shaped cross sections (or W-shaped cross sections or a continuous shape thereof), a perforated plate, or the like is used as shown in FIG. The filter medium holding member may be employed. In this case, the size of the filter medium holding member is set so as to hold the entire downstream filtration surface of the filter medium 2.
Withstand pressure performance is further improved.

On the other hand, in the above embodiment, the pressing plate 1 of the frame member 1
1, the gas seal member S is made of, for example, urethane foam having elasticity or a polyethylene foam material, and the pressure plates 11, 11 are fixed plates that cannot move up and down, and the pressure plates 11, 11 The distance between them is set slightly smaller than the height of the filter medium 2 having the gas sealing member S,
It is also possible to adopt a configuration in which the filter medium 2 is forcibly inserted between the pressure plates 11 and 11 and mechanically fixed.

[0023]

Since the present invention has the above-described configuration, it has the following effects. From the contents described in the column of action, it is possible to provide a filter that allows the filter medium to be exchanged in a short time from the downstream side and that exhibits a collecting function even after the exchange of the filter medium.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a filter according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the filter.

FIG. 3 is a view showing a downstream side surface of the filter in a state where a frame lid member is removed.

FIG. 4 is a perspective view showing a state where a frame lid member of the filter is removed.

FIG. 5 is a detailed view of a filter medium used in the filter.

FIG. 6 is an explanatory view of a main part of another embodiment of the present invention.

FIG. 7 is an explanatory view of a main part of another embodiment of the present invention.

FIG. 8 is a perspective view of a shape retaining member according to another embodiment of the present invention.

FIG. 9 is an external perspective view of a conventional filter.

FIG. 10 is a cross-sectional view of a conventional filter.

[Explanation of symbols]

 S Gas seal member 1 Frame member 2 Filter medium 2 'Filter medium 10 Fixing plate 11 Pressure plate 12 Filter medium receiving part 40 Filter medium pressing member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-269624 (JP, A) JP-A-57-197017 (JP, A) JP-A-61-74619 (JP, A) 191423 (JP, U) JP-A 2-75117 (JP, U) JP-A 58-195621 (JP, U) JP-A 61-79620 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B01D 46/00-46/54

Claims (2)

(57) [Claims] 1. A filter medium receiving portion (12) formed by an opposing pressure plate (11) capable of maintaining an approaching / separating state with an opposing fixing plate (10) and upstream of the fixing plates (10). A) a filter member (2) having a gas seal member (S) over the entire outer edge portion and accommodated to close a gas flow path formed by the frame member (1); A filter medium holding member (40) detachably attached to the downstream side surface of the frame member (1) and capable of maintaining the attached state, and bringing the pressing plates (11) and (11) closer to each other; When the filter medium holding member (40) is mounted on the frame member (1), a gas seal member (S) is provided between the frame member (1) and the filter medium (2).
A filter characterized by being made more airtight. 2. A filter medium receiving part which is formed by an opposing pressure plate (11) capable of maintaining an approaching / separating state with the opposing fixing plate (10), and a filter medium receiving member on an upstream side of the both fixing plates (10). A frame member (1) having a portion (12), and a plurality of filter media (A) having a gas seal member (S) over the entire outer edge portion and containing a plurality of gas seals to close a gas flow path formed by the frame member (1). 2 ′), and a filter medium holding member (40) detachably attached to the downstream side surface of the frame member (1) and capable of maintaining the attached state, and the pressure plates (11) and (11). When the filter media holding members (40) are attached to the frame member (1) while approaching each other, the outer peripheral edge of each filter media (2 ') is brought into pressure contact with the pressure plate (11) and the filter media receiving portion (12), The pressure contact position is made airtight via a gas seal member (S). Filter and wherein the Rukoto.