JP3204549U - Filter cassette and filter medium used therefor - Google Patents

Abstract

Provided is a filter cassette in which a used filter medium can be easily removed from a rectangular frame and only the filter medium can be discarded, and the rectangular frame can be reused by mounting an unused filter medium. A combustible filter medium in which one end of one or more cylindrical portions having one end closed in a bag shape is formed in one rectangular opening, and the opening is expanded in a square shape. In the filter cassette 1 including the square frame 21 to be attached, the square frame 21 is formed as an outer frame formed on an inner frame 22 attached to the opening 12 of the filter medium 11 and a guide for storing and supporting the inner frame 22 at least on two sides. The opening 12 of the filter medium 11 is provided with a flammable fastener 17 that fastens the peripheral edge 15 of the filter medium 11 to the cylindrical portion 15 in a state of being wound around the inner frame 22. [Selection] Figure 1

Description

  The present invention relates to a filter cassette used by being attached to an air inlet of an exhaust treatment facility provided in a painting booth or the like.

  The paint booth is equipped with an exhaust treatment facility for treating exhaust gas containing pollutants such as paint mist and then circulating it or exhausting it to the outside. A support frame for detachably mounting a filter cassette for capturing dust is formed.

As a filter medium used for the filter cassette attached to the support frame, a combustible bag-type filter medium in which one end of one or more cylindrical parts closed in a bag shape is formed in one rectangular opening is used. A filter cassette having this filter medium attached to a rectangular frame is mounted on a support frame or the like of a waste treatment facility.
When the filter medium becomes dirty after a predetermined period of use, the used filter cassette is removed, the entire rectangular frame is discarded, and the filter cassette is replaced with a new filter cassette.

By the way, in general, the filter medium is formed of a combustible synthetic resin, and the rectangular frame is formed of a non-combustible material such as metal. Therefore, when disposing of the filter cassette, It is necessary to separate the rectangular frame that becomes waste.
However, in the conventional filter cassette, the filter medium is sewn or welded to the rectangular frame, and is fixed using a metal fastener such as a screw. Therefore, a tool such as scissors or a screwdriver must be used. In other words, there is a problem that it cannot be easily separated.

  In addition, although the square frame is sufficiently reusable in terms of strength, the filter medium cannot be easily attached and removed, so it must be disposed of and has an impact on the environmental impact. There was a problem of being big.

  Therefore, the present invention provides a filter cassette in which the used filter medium can be easily removed from the rectangular frame and only the filter medium can be discarded, and the rectangular frame can be reused by attaching an unused filter medium. This is a technical issue.

In order to solve this problem, the present invention relates to a combustible filter medium in which one end of one or more cylindrical portions closed at one end in a bag shape is formed in one rectangular opening, and the opening is rectangular. In a filter cassette consisting of a square frame attached in an unfolded state,
The rectangular frame is composed of an inner frame that is attached to the opening of the filter medium, and an outer frame that is formed on a guide that houses and supports the inner frame at least two opposite sides.
A flammable fastener is attached to the opening of the filter medium so as to fasten the peripheral portion and the tubular portion in a state where the peripheral portion is wound around the inner frame.

According to the filter cassette of the present invention, the periphery of the opening portion of the filter medium is wrapped around the inner frame, and the periphery and the tubular portion are fastened by the snap hook or the fastener of the surface fastener, so that the filter medium is Can be easily attached to the inner frame.
Next, the inner frame is attached to the outer frame together with the filter medium.
Here, if the two opposite sides of the outer frame are formed as groove-type guides that store and support the inner frame inside, the inner frame is slid into the outer frame and inserted to assemble the filter cassette. Is completed.

The assembled filter cassette is used, for example, by being attached to a support frame formed at an air inlet of an exhaust treatment facility or the like, and is exchanged when the filter medium becomes dirty after a predetermined period of use.
The replacement work is done by removing the inner frame from the outer frame of the filter cassette removed from the support frame, and fastening the snap hook or the surface fastener that holds the peripheral part of the opening wrapped around the inner frame and the cylindrical part. If it is removed, the used filter medium can be easily removed from the inner frame, and only the filter medium can be discarded.
Next, a filter cassette can be assembled by attaching an unused filter medium to the inner frame and attaching the inner frame together with the filter medium to the outer frame in the same procedure as described above. But it can be reused.

The exploded view which shows an example of the filter cassette which concerns on this invention. The external view. FIG. Explanatory drawing which shows an outer frame. Explanatory drawing which shows the assembly procedure of a filter cassette.

  In this example, it is possible to easily remove the used filter medium from the rectangular frame and discard only the filter medium, and to achieve the purpose of reusing the rectangular frame by attaching an unused filter medium. A filter comprising: a combustible filter medium in which one end of one or more cylindrical portions with one end closed in a bag shape is formed in one rectangular opening; and a rectangular frame attached in a state where the opening is expanded in a square shape In the cassette, the rectangular frame is composed of an inner frame attached to the opening of the filter medium, and an outer frame formed with a guide having at least two opposing sides for accommodating and supporting the inner frame. A flammable fastener that fastens the peripheral edge and the cylindrical part was attached in a state where the part was wrapped around the inner frame.

  The filter cassette 1 of this example is mounted so that both upper and lower ends are supported by a rail-like support frame 2 that is grounded to an air suction port of an exhaust treatment facility such as a painting booth as shown in FIG. As shown in FIG. 1, it is composed of a flammable filter medium 11 and a square frame 21 attached in a state where the opening 12 is expanded in a square shape. The square frame 21 is formed at the opening of the filter medium 11. It consists of an inner frame 22 to be mounted and an outer frame 23 for storing and supporting it.

The filter medium 11 is formed of a non-woven fabric of combustible resin or the like, and in this example, the other end of one or more (two in this example) cylindrical part 14 in which one end 13 is closed in a bag shape is one rectangular opening. The multi-pocket type formed in 12 is used.
The multi-pocket filter medium 11 is formed by sewing a single pocket filter medium with a sewing machine.
In the present invention, the filter medium 11 is not limited to the multi-pocket type, and it is needless to say that a single pocket type filter medium may be used.

The peripheral edge 15 of the opening 14 is provided with cuts 16 along the ridge lines at the four corners and the joints between the cylindrical parts 14, and the peripheral edge 15 is wound around the inner frame 22 in the state where the peripheral edge 15 is wound around the inner frame 22. A combustible fastener 17 for fastening the portion 15 and the tubular portion 14 is attached.
In this example, a snap hook formed of a flammable plastic is used as the fastener 17. However, the present invention is not limited to this, and any one such as a planar fastener formed of a flammable plastic can be used.

  The inner frame 22 of the rectangular frame 21 is formed of a wire frame 22a in which a wire rod is bent into a square shape and the tips are welded to each other. When a multi-pocket type filter medium 11 is used, grid wires 22b that support the stitched portions between the pockets are welded to the wire frame 22a according to the number of pockets.

As shown in FIG. 3, the outer frame 23 is bent around the metal plate having a square frame opening 24 at the center, and has a total of three sides, two opposite sides 25A and 25B, and one side 25C connecting these sides. It is formed in a grooved guide for accommodating and supporting the inner frame 22 inside.
Further, the remaining one side 25D is provided with a plate material 26 that connects the two opposite sides 25A and 25B, and an insertion port 27 for inserting and removing the inner frame 22 from the side surface of the outer frame 23 is formed and the insertion is performed. A baffle plate 28 that narrows the insertion port 27 in a state where a space for inserting the inner frame 22 is secured is formed in the port 27 by being folded.
As a result, the insertion opening 27 becomes narrow, so that the inner frame 22 can be reliably prevented from coming out.

Further, since the plate member 26 is provided on the back side of the insertion port 27 and the front side thereof is open, when the filter cassette 1 is mounted on the support frame 2 of the exhaust treatment facility, the front side of the outer frame 23 is provided. Is set upstream and the back side is set downstream.
Thereby, even if the filter medium 11 is pulled downstream by the wind pressure and the inner frame 22 may bend downstream, all four sides of the inner frame 22 are held by the outer frame 23. The inner frame 22 does not come off.

FIG. 4A is an external perspective view of the outer frame 23. An insertion port 27 is formed on one side 25D on the near side as viewed in the figure, and the remaining three sides 25A to 25C face the groove openings 29A to 29C inward. It is formed in the groove type guide, and the inner frame 22 is housed and supported therein.
FIG. 4B is a cross-sectional view taken along line XX of FIG. 4A, in which the insertion port 27 is narrowed by a baffle plate 28, and a groove type in which one side 25D on the back side is formed in a groove type cross section. You can see that it is a guide.
4C is a cross-sectional view taken along line YY of FIG. 4A, and it can be seen that the opposite two sides 25A and 25B are groove-type guides formed in the groove-type cross section.

The above is one configuration example of the present invention, and the operation thereof will be described next.
When the filter cassette 1 is assembled, first, the inner frame 22 is attached to the opening 12 of the filter medium 11 as shown in FIG.
In this case, the front and back of the filter medium 11 is confirmed, the dust capturing surface 11a is directed inward, and the peripheral edge 15 of the opening 12 is wound from the back side of the inner frame 22 through the inside of each side and folded outward. When the peripheral edge portion 15 is fastened to the cylindrical portion 14 with a fastener 17 such as a snap hook, the opening portion 12 is attached to the front side and the cylindrical portion 15 protrudes to the back side.

Next, the front and back of the filter medium 11 are turned upside down through the inside of the inner frame 22 to expose the dust capturing surface 11a to the outside, and as shown in FIG. The rectangular frame 21 is assembled by inserting the inner frame 22 together with the filter medium 11 from the insertion port 27 opened in the side surface of the outer frame 23.
At this time, the cylindrical portion 15 of the filter medium 11 protrudes to the front side, but the front side of the insertion port 27 of the outer frame 23 is open, so the filter medium 11 does not get in the way.

  After the inner frame 22 of the rectangular frame 21 is accommodated in the groove openings 29A to 29C of the outer frame 23, as shown in FIG. The filter cassette 1 is completed with the dust capturing surface 11a facing inward, the opening portion 12 facing the front side, and the cylindrical portion 15 projecting to the back side. It is used by being attached to the support frame 2 of the air inlet (not shown).

When replacing the inner frame 22, the filter cassette 1 is removed from the support frame 2 of the exhaust treatment equipment, the used filter medium 11 is turned over, and the cylindrical portion 15 is protruded to the front side in the reverse procedure. The filter medium 11 is extracted from the insertion port 27 of the outer frame 23.
In this state, if the filter medium 11 is turned over again so that the dust trapping surface 11a faces inward, the fastener 17 holding the peripheral edge 15 and the cylindrical portion 14 is exposed to the outside of the filter medium 11, so that the fastener If 17 is removed and extracted on the back side, the filter medium 11 can be easily removed from the inner frame 22 with the dirty dust capturing surface 11a facing inward, and only the used filter medium 11 is disposed as combustible waste. can do.

  And, by attaching the unused filter medium 11 to the inner frame 22 in the above-described procedure, inserting it into the outer frame 23, and assembling and reusing the filter cassette 1, it is possible to replace only the filter medium 11. The filter cassette 1 can be reused.

  Since the structure of the filter cassette 1 is simple, the unit price can be kept low, the filter cassette 1 can be reused only by exchanging the filter medium 11, the running cost can be suppressed, and the replacement work of the filter medium 11 is extremely easy. Since only the combustible filter medium 11 is processed as waste, the influence on the environmental load can be suppressed.

In the description of the above embodiment, the case where the outer slot 23 is formed with the insertion port 27 into which the inner frame 22 is inserted is described as the outer frame 23. However, the present invention is not limited to this, and the front side is the air inflow side. It is good also as a structure which attaches the inner frame 22 from the back side used as a side or an air exhaust side.
Further, as the filter cassette 1 used by being mounted on the support frame 2 of the factory equipment, the filter medium 11 is attached to a rectangular frame 21 including an inner frame 22 made of a wire frame 22a and an outer frame 23 formed by bending a metal plate. However, the outer frame 23 may be used instead of the wire frame 22a as a rectangular frame, and the filter medium 11 attached thereto may be used.

  As described above, the present invention can be applied to the use of a filter cassette that is used by being attached to an air inlet of an air purification treatment device that purifies indoor air in a factory facility or the like.

DESCRIPTION OF SYMBOLS 1 Filter cassette 11 Bag type | mold filter material 12 Opening part 13 One end 14 Cylindrical part 15 Peripheral part 17 Fastener 21 Square frame 22 Inner frame 23 Outer frame 26 Plate material 27 Insertion slot

Claims (7)

A filter cassette comprising a combustible filter medium in which one end of one or more cylindrical portions with one end closed in a bag shape is formed in one rectangular opening, and a rectangular frame attached in a state where the opening is expanded in a square shape In
The rectangular frame is composed of an inner frame formed of a wire frame attached to an opening of a filter medium, and an outer frame formed on a guide for storing and supporting the inner frame at least two opposite sides,
A filter cassette characterized in that a flammable fastener is attached to the opening of the filter medium so as to fasten the peripheral portion and the tubular portion in a state where the peripheral portion is wound around the inner frame.   The outer frame has a total of three sides, two opposite sides and one side connecting the opposite sides, formed in a groove-type guide that accommodates and supports the inner frame on the inside, and an insertion port for inserting and removing the inner frame is formed on the remaining one side. The filter cassette according to claim 1.   The filter cassette according to claim 1 or 2, further comprising a baffle plate that narrows the insertion port in a state where a space for inserting the inner frame is secured.   The filter cassette according to claim 1, wherein the fastener is a snap hook or a planar fastener. A filter cassette comprising a combustible filter medium in which one end of one or more cylindrical portions with one end closed in a bag shape is formed in one rectangular opening, and a rectangular frame attached in a state where the opening is expanded in a square shape In
The rectangular frame is formed of a wire frame attached to an opening of a filter medium,
A filter cassette characterized in that a flammable fastener is attached to the opening of the filter medium so as to fasten the peripheral portion and the tubular portion in a state where the peripheral portion is wound around the wire frame. In the flammable filter medium in which the other end of one or more cylindrical portions closed at one end in a bag shape is formed in one rectangular opening,
A filter medium characterized in that a flammable fastener is attached to the rectangular opening in a state where the peripheral edge is wound around a rectangular frame. The filter medium according to claim 6, wherein the fastener is a snap hook or a planar fastener.

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