JPH06269624A - Filter - Google Patents

Abstract

PURPOSE:To provide a filter which allows a replacement of filter medium in a short time and demonstrates capturing function after the replacement of the filter medium. CONSTITUTION:The filter consists of a frame member 1 which is formed by opposed fixed plates 10 and opposed pressure-holding plates 11 capable of maintaining an approach and separation state and has a filter medium receiving part stretching out inwardly from the downstream side part of both fixed plates 10, a filter medium 2 which has a gas sealing member S across the entire area of an outer peripheral part and is accommodated so as to block a gas flow path formed by the frame member 1, a shape holding member 3 which is provided on the frame member 1 to keep the filter medium 2 in an appropriate shape, and a filter medium holding member 40 which is installed in a freely detachable manner on the upstream side surface of the frame member 1. If the filter medium holding member 40 is mounted on the frame member 1 and the pressure holding plates 11, 11 are allowed to get close to each other, a space between the frame member 1 and the filter medium 2 is rendered airtight by the gas sealing member S.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter in which a case is provided with a filter medium.

[0002]

2. Description of the Related Art As a filter of this kind, for example,
There is one as shown in FIGS. 9 and 10. In this filter, as shown in the figure, the casing 8 is composed of a rectangular parallelepiped frame member 80 serving as a gas passage and a filter medium receiving member 81 provided on the upper and downstream sides of the frame member 80. A filter medium 9 having a zigzag cross section is accommodated in the casing 8. Then, in order to ensure airtightness between the frame member 80 and the filter medium 9, both side edges of the filter medium 9 and the filter medium receiving member 81 are bonded, and upper and lower edges of the filter medium 9 and upper and lower walls constituting the frame member 80 are respectively bonded. is doing.

Therefore, in this filter, the above-mentioned fluid is the suspended matter in the gas and the filter medium receiving members 81, 81 on the upstream side.
While flowing in a path between the filter media receiving members 81, 81 on the downstream side → the filter media 9 → downstream side, the upstream side surface of the filter media 9 collects (hereinafter, collecting the suspended matter in the gas with the filter media is simply referred to as Is called). However, in this type of filter, since the filter medium 9 and the casing 8 are bonded and integrated as described above, the filter medium 9 is in a used state, that is,
When the pressure loss increases due to the clogging of the filter medium 9 and the performance deteriorates, the entire filter including the casing 8 must be discarded, and a large amount of industrial waste is generated during replacement. .

As one means for solving the above problems, the filter medium 9
It is possible 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.

[0005]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a filter which can replace a filter medium in a short time and exhibits a collecting function even after the replacement of the filter medium.

[0006]

The filter according to the invention of claim 1 is formed by opposing fixing plates 10 and opposing clamping plates 11 capable of maintaining the approaching / separating state, and of both fixing plates 10. A frame member 1 having a filter medium receiving portion 12 extending inward from a downstream side portion, and a gas sealing member S over the entire outer edge portion are housed so as to close a gas flow path formed by the frame member 1. A filter material 2; and a shape-retaining member 3 provided on the frame member 1 to keep the shape of the filter material 2 proper.
The filter medium pressing member 40 is detachably attached to the upstream side surface of the frame member 1, and when the filter medium pressing member 40 is mounted on the frame member 1 and the pressure plates 11, 11 are brought close to each other, the frame member 1 An airtight state is provided between the filter medium 2 and the filter member 2 by the gas sealing member S.

The filter according to the second aspect of the present invention is formed by the opposing fixed plate 10 and the opposing pressure plate 11 capable of maintaining the approaching / separating state, and
A frame member 1 having a filter medium receiving portion 12 protruding inward from the downstream side portions of both the fixing plates 10 and a filter medium receiving portion 13 provided between the filter medium receiving portions 12 and 12, and the entire outer edge portion A filter medium 2'having a gas seal member S and containing a plurality of gas channels for closing the gas flow path formed by the frame member 1, and the filter medium 2 '.
Of the shape retaining member 3 provided in the frame member 1 for maintaining the shape of the frame member 1 properly, and the filter medium retaining member 40 detachably attached to the upstream side surface of the frame member 1. When mounted on the frame member 1 and when the pressure plates 11, 11 are brought close to each other, the outer peripheral edge of each filter medium 2'is brought into pressure contact with the pressure plate 10 and the filter medium receiving parts 12, 13, and the pressure contact position is the gas seal member. The airtight state is established through S.

[0008]

The present invention has the following actions. (Operation of the invention described in claim 1) In this filter, the frame member 1 and the filter medium 2 are not adhered to each other, unlike the filter described in the conventional column. Therefore, the filter medium pressing member 40 is separated from the frame member 1 and sandwiched. The filter medium 2 can be easily removed only by separating the pressure plates 11 from each other.

When a new filter medium 2 is attached, the filter medium 2 is retained by the shape-retaining member 3 with the filter medium pressing member 40 separated from the frame member 1 and the pressure plates 11 and 11 separated from each other. As described above, the filter medium pressing member 40 is housed in the frame member 1, and then the filter medium pressing member 40 is attached to the frame member 1 and the pressing plates 11 and 11 are brought close to each other. Then, the entire area between the frame member 1 and the filter medium 2 is made airtight by the gas seal member S, and the mounting of the new filter medium 2 is completed.

Thus, in this filter, the filter medium 2
Can be replaced in a short time, and the collection function can be exhibited even after the replacement of the filter medium 2. (Operation of the invention according to claim 2) With respect to the filter according to the invention of this claim, the filter medium 2 can be replaced in a short time after the replacement of the filter medium 2 by the same manner as that of the invention according to claim 1. The filter material also exerts a collecting function, but in this filter, when the filter medium pressing member 40 is mounted on the frame member 1 and the pressure plates 11, 11 are brought close to each other, the entire outer edge portion of each filter medium 2'is And the pressing plate 10 and the filter medium receiving portion 1
An airtight state is provided between the first and second electrodes via the gas seal member S.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the drawings shown as embodiments. In the filter of this example,
As shown in FIG. 1 and FIG. 2, a filter medium 2 having a W-shaped cross section is used, and the basic structure of the whole is that a frame member 1 having a rectangular parallelepiped opening is provided in the frame member 1. Shape-retaining member 3,
It is composed of a frame lid member 4.

As shown in FIG. 1, the frame member 1 is composed of left and right fixed plates 10 and upper and lower pressure plates 11,
The upper clamping plate 11 has a structure capable of swinging within a certain range with the downstream side of the frame member as a fulcrum. In addition, this pressing plate 1
As for the structure for swinging 1, all known structures can be adopted. As shown in FIG. 2, each of the fixing plates 10 described above is provided with a filter medium receiving portion 12 which extends inward from the downstream side portion of the fixed plate 10, and the filter medium receiving portion 1 is also provided.
One filter medium receiving portion 13 is provided between Nos. 2 and 12.
In this embodiment, the number of the filter medium receiving portions 13 is one, but the number is not limited to this.

As shown in FIG. 5, the filter medium 2 is formed by zigzag folding a paper-like or sheet-like material 20 into a certain width W and fixing the peaks and peaks and the valleys and valleys so that the positions are not displaced. The product is further formed by bending it into a V shape or a continuous shape thereof (see FIGS. 1 and 2). As shown in FIG. 5, the fixing between the folds is made of resin, polymer,
It is carried out in a mode in which it is connected by a thread or a thread-shaped or narrow material 21 such as plastic, adhesives thereof, hot melt or glass. Further, as shown in FIG. 5, a reinforcing band 22 is attached to each of the bent portions (each V-shaped portion) of the filter medium 2 so that the filter medium 20 is not damaged during the action of gas pressure or during work. Is done.

It should be noted that one filter medium may be a combination of V-shaped units or a W-shaped unit, but it is always necessary to make one continuous sheet. Also,
As shown in FIG. 1, the filter medium 2 includes a gas seal member S on the upper and lower surfaces formed in a W shape and on both end edge surfaces, respectively.
(For example, resin, polymer, rubber, or a foam material of these compounds, urethane foam or polyethylene foam material having elasticity) is provided, and the filter material 2 and the gas sealing member S are added. The height dimension is set to be slightly larger than the distance between the pressure plates 11 and 11 in the parallel state.

The shape-retaining member 3 is made of a steel material, and as shown in FIGS. 1 and 2, between the four support rods 30 provided upright on the lower clamping plate 11 and the two support rods 30. It is possible to employ a configuration in which the V-shaped contact member 31 is erected, or a configuration in which the contact member 31 is directly fixed to the filter medium receiving portion 12 or the filter medium receiving portion 13. The shapes of the shape-retaining member 3 and the filter medium 2 are such that the downstream side surface of the filter medium 2 is the contact member 3 when the filter medium 2 is properly accommodated in the frame member 1, as shown in FIG.
1 is set.

As shown in FIG. 1, the frame lid member 4 includes an upright piece 4
Two filter medium pressing members 40 in the inner area of the frame main body 41 having two
The upper cover plate 11 is fitted with an upright piece 42 by fitting the frame cover member 4 on the upstream side of the frame member 1 in a state where the pressing plates 11 and 11 are parallel to each other. I can hold it down. The frame member 1 and the frame lid member 4
The structure can be appropriately combined with bolts and nuts, etc., but in this embodiment, the frame cover member 4 has a locking projection 70 (male), and the pressure plate 11 of the frame member 1 has a locking receiving hole 71 ( When the frame lid member 4 is pushed into the frame member 1, the projection 70 is fitted into the stopper receiving hole 71, and the attachment of the frame lid member 4 to the stopper receiving hole 71 is completed with one touch. There is.

Since the filter of this embodiment is constructed as described above, the filter medium 2 can be replaced in the following manner. (When removing the old filter medium 2) First, as shown in FIG. 4, the frame lid member 4 is removed from the frame member 1. Then, due to the dimensional relationship between the height of the filter medium 2 and the gas seal member S and the distance between the pressure plates 11 and 11 in the parallel state, the gas seal member S elastically returns and the pressure plate 11 on the upper side of FIG. It is pushed up in a swinging manner as shown in FIG. Next, as shown in FIG. 1, the filter medium 2 attached to the contact member 31 of the shape-retaining member 3 is extracted upstream. At the time of this withdrawal, the upper clamping plate 11 is pushed up, and the filter medium 2
Since the clamping force from the upper and lower clamping plates 11 does not act on, the filter medium 2 can be easily pulled out without requiring a large force. (When mounting a new filter medium 2) First, the filter medium 2 is pushed into the frame member 1 from the upstream side open portion to be attached to the contact member 31 of the shape-retaining member 3, and then the upper clamping plate 11 is moved downward. It is forcibly pushed down in a manner of swinging until it becomes parallel to the pressure plate 11. In this state, the filter medium 2
From the relationship between the height obtained by adding the gas sealing member S and the distance between the pressure plates 11 and 11 in the parallel state, the gas sealing member S provides an airtight state between the upper and lower surfaces of the filter medium 2 and the upper and lower pressure plates 11. (See FIG. 3). Then, when the frame lid member 4 is fitted on the upstream side of the frame member 1,
As shown in FIG. 2, in the filter medium 2, the reinforcing belt 22 portions on the upstream side are pushed by the filter medium pressing member 40, and both edge portions of the filter medium 2 and the filter medium receiving member are received through the gas seal members S provided on both side edge surfaces of the filter medium 2. Airtightness with the portion 12 is secured.

In this filter, when a gas pressure acts on the filter medium 2, the pressure contact force between both edge portions of the filter medium 2 and the filter medium receiving portion 12 becomes large, and the airtightness between them is further excellent. Becomes As described above, in the filter of this embodiment, the replacement of the filter medium 2 is very easy,
Even after the replacement, the collection function will be fully exerted.

In the above-mentioned embodiment, the pressure plates 11, 1 are
Although the approaching / separating between the two is realized by the swing of the upper pressing plate 11, the invention is not limited to this, and as shown in FIG. (Corresponding to the pressure plate 11 on the upper side of) is provided so as to be vertically movable, and is attached to the casing K side so as to be rotatable.
May be realized by moving from the position of two-dot chain line in FIG. 6 to the position of solid line (vertical direction). When the filter having the vertically movable middle plate 11a is used, the used filter medium 2 in each filter can be replaced even if the filter is stacked vertically and horizontally to form one large area filter. Easy to open and close.

Although the filter medium 2 has a W-shaped cross section in the above embodiment, it may be constituted by two V-shaped filter media 2'as shown in FIG. The gas sealing members S may be provided on the entire outer edge of the filter medium 2 ′, that is, on the upper and lower V-shaped surfaces and both side edge portions of each filter medium 2 ′. Further, instead of the shape-retaining member of the above-mentioned embodiment, a shape-retaining member constituted by two mesh bodies having a V-shaped cross section (or a W-shaped cross section) or a perforated plate as shown in FIG. 8 may be adopted. Of course, in this case, if the size of the shape-retaining member is set so as to be able to hold the entire downstream side surface of the filter medium 2, the sealing property is further improved.

On the other hand, in the above embodiment, the pressure plate 1 of the frame member 1 is used.
1 is configured to be vertically movable, but when the gas seal member S is made of elastic urethane foam or polyethylene foam material, the pressure plates 11, 11 are fixed plates that cannot move up and down, and the pressure plates 11, It is also possible to adopt a configuration mode in which the mutual distance 11 is set to be slightly smaller than the height of the filter medium 2 having the gas seal member S, and the filter medium 2 is forcibly inserted between the pressing plates 11, 11.

[0022]

Since the present invention has the structure as described above, it has the following effects. From the contents described in the column of action, it was possible to provide a filter in which the filter medium can be exchanged in a short time and which exhibits the collecting function even after the exchange of the filter medium.

[Brief description of 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 diagram showing an upstream side surface of the filter with a frame lid member removed.

FIG. 4 is a perspective view showing a state in which 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 3 Shape retention member 10 Fixing plate 11 Clamping plate 12 Filter medium receiving part 13 Filter medium receiving part 40 Filter medium holding member

Claims (2)

[Claims] 1. A fixed plate (10) facing each other and a sandwiching plate (11) facing each other capable of maintaining the approaching / separating state, and extending inward from the downstream side portions of the both fixing plates (10). A frame member (1) having a filter medium receiving portion (12), and a filter medium having a gas seal member (S) over the entire outer edge portion and housed so as to close the gas flow path formed by the frame member (1). (2), a shape-retaining member (3) provided on the frame member (1) to keep the shape of the filter medium (2) proper, and detachably attached to the upstream side surface of the frame member (1) And a filter medium pressing member (40) for removing the filter medium pressing member (4).
0) is attached to the frame member (1) and the pressure plates (11), (1
1) A filter characterized in that, when they are brought close to each other, a space between the frame member (1) and the filter medium (2) is made airtight by a gas seal member (S). 2. A fixing plate (10) facing each other and a pressing plate (11) facing each other capable of maintaining an approaching / separating state, and inward from the downstream side of both fixing plates (10). And a filter medium receiving part (1) provided between the filter medium receiving parts (12) and (12).
3) and a frame member (1), and a plurality of filter media (2 ') having a gas sealing member (S) in the entire outer edge portion and accommodating a plurality of gas passages formed by the frame member (1). ), A shape-retaining member (3) provided on the frame member (1) for properly maintaining the shape of the filter medium (2 ′), and detachably attached to the upstream side surface of the frame member (1). Filter media holding member (40)
When the filter medium pressing member (40) is mounted on the frame member (1) and the pressure plates (11), (11) are brought close to each other, the outer peripheral edge portion of each filter medium (2 ′) is clamped. A filter characterized by being brought into pressure contact with a pressure plate (10) and filter medium receiving parts (12), (13), and the pressure contact position being in an airtight state via a gas seal member (S).