JPH0880413A - Dust collecting filter - Google Patents

Abstract

PURPOSE: To easily and inexpensively manufacture a dust collecting filter, particularly an inertia separating dust collecting filter with a simple structure. CONSTITUTION: Plural numbers of a corrugated filter element 1 arranged by successively laminating at a specific interval is provided in a fluid passage, slit like holes 2 are provided at one of the top parts in the front or rear side of the fluid flow-in direction of the each corrugated filter element 1 along the ridge and the holes 2 are provided in the order of the lamination of the filter element 1, alternately in the top parts of the front and rear side of the fluid flow-in direction and with a shift in the right angle direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting device for removing soot and smoke generated in, for example, an incinerator, a boiler, etc., and a dust collecting filter used in various other dust collecting devices. More specifically, the present invention relates to an inertial separation type dust collecting filter that captures dust and the like in a dust-containing fluid such as soot and smoke by utilizing a difference in inertial force with the fluid.

[0002]

2. Description of the Related Art As an inertial separation type dust collecting filter as described above, for example, as disclosed in JP-A-2-20286,
A mesh-shaped filter element is formed by forming a large number of honeycomb-shaped through holes, which are inclined at a predetermined angle with respect to the plate surface in the same direction, by press punching a thin metal plate or the like. It is known that a plurality of sheets are laminated differently.

The above-mentioned dust collecting filter captures dust and the like having a large inertial force by colliding with the wall surface of the filter and the like in the process in which the dust-containing fluid passes through the honeycomb-shaped through holes having different directions while sequentially swirling. However, there are problems that the shape is complicated and the manufacturing is troublesome, and it is very difficult to remove the captured dust and the like.

Therefore, the applicant of the present invention has previously disclosed Japanese Patent Laid-Open No. 6-232.
In Japanese Patent Publication No. 14, as shown in FIG. 5, a plurality of filter elements 10 each having a substantially V-shaped cross section are arranged in a substantially planar shape in parallel with each other at a predetermined interval in a direction perpendicular to a fluid inflow direction (direction of arrow a in the drawing). , The filter elements 10 arranged in a substantially planar shape
We proposed a dust collecting filter in which a plurality of columns are provided in the fluid inflow direction, the directions of the V-shaped filter elements in the odd and even rows are alternately inverted, and the arrangement pitch of the filter elements is shifted.

As described above, the dust collecting filter using the filter element 10 having a substantially V-shaped cross section has a simpler structure than the conventional honeycomb filter, and can easily remove the trapped dust and the like. There are advantages.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to manufacture the above dust collecting filter with a simpler structure, easier and cheaper.

[0007]

In order to achieve the above object, the dust collecting filter according to the present invention has the following constitution.

That is, a plurality of corrugated plate-shaped filter elements arranged in order in a fluid passage at predetermined intervals are provided, and the corrugated plate-shaped filter elements are arranged on the front side or the rear side in the fluid inflow direction. Provide a slit-shaped through hole on either top,
The through-holes are alternately provided on the front and rear apexes in the fluid inflow direction in the stacking order of the filter elements, and shifted in the direction perpendicular to the stacking direction of the filter elements.

[0009]

With the above structure, the cross-sectional shape between the adjacent through holes in each corrugated plate-like filter element is substantially V-shaped, and the V-shaped portions are repeatedly and continuously formed through the through holes.
It is possible to obtain the same structure as that of a conventional arrangement in which a large number of filter elements each having a substantially V-shaped cross section are arranged in parallel at predetermined intervals. And, in the present invention, by simply providing a plurality of corrugated plate-shaped filter elements at a predetermined interval, the filter elements having a V-shaped cross section are arranged in a plane shape as in the conventional case,
And a configuration equivalent to that in which it is provided in multiple rows is obtained,
The structure is simple, easy and inexpensive to manufacture.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A dust collecting filter according to the present invention will be specifically described below with reference to the embodiments shown in the drawings. 1 is a front view showing an embodiment of a dust collecting filter according to the present invention, FIG. 2 is a partially cutaway bottom view thereof, and FIG. 3 is a partially enlarged bottom view thereof.

In the embodiment shown in the drawing, a plurality of corrugated plate-shaped filter elements 1 are arranged at a predetermined interval, and in the case of the figure, two kinds of filter elements 1a and 1b are alternately arranged in groups of 3 sheets, for a total of 6 sheets. They are arranged one above the other. Each of the filter elements 1a
As shown in FIGS. 3 and 4, the corrugated shape of 1b is formed in a substantially zigzag shape having front and rear portions with respect to the fluid inflow direction (direction of arrow a in the figure), and each filter element 1a.
A slit-shaped through hole 2 is formed in 1b at different positions on the front side and the rear side in the fluid inflow direction. That is, in the illustrated example, the filter element 1a arranged in an odd-numbered direction with respect to the fluid inflow direction is provided with the through hole 2 at the top on the rear side in the fluid inflow direction, and the filter element 1 arranged in an even-numbered position.
In b, a through hole 2 is provided at the top on the front side in the fluid inflow direction.

The filter elements 1a and 1b are formed to have the same wave-shaped pitch (distance between adjacent apexes), and the opening positions of the through holes 2 of the respective filter elements 1a and 1b are half a pitch with respect to the above pitch. It is formed at a shifted position. Further, the wave crests having the above-mentioned through holes 2 are formed substantially flat in the direction perpendicular to the fluid inflow direction. The material of each of the filter elements 1 may be a metal plate, a synthetic resin plate, or the like, and if heat resistance and corrosion resistance are required, aluminum alloy, stainless steel plate, or the like may be used.

With the above structure, the cross-sectional shape between the adjacent through holes in each corrugated plate filter element is substantially V-shaped,
A configuration equivalent to that in which a plurality of the above-mentioned conventional filter elements having a substantially V-shaped cross section are arranged in parallel at predetermined intervals is formed by repeatedly forming the V-shaped portions through the through holes.
Formed by a corrugated filter element of a sheet, by providing a plurality of corrugated filter elements at a predetermined interval as described above, a filter element arranged in a plane as in the conventional A structure equivalent to that provided in a plurality of rows can be obtained.

Further, each of the filter elements 1 is positioned and held at a predetermined interval as described above, and its means is appropriate. For example, a bent portion or a cut-and-raised piece is formed in a part of each filter element 1. Is formed and brought into contact with the adjacent filter element, the structure can be easily positioned and held. In the case of the figure, a substantially L-shaped bent portion 3 is formed on a part of the peripheral edge of each filter element 1, and some of the many through holes 2 formed in each of the filter elements 1a and 1b. The edges 4a, 4b in the longitudinal direction of the through hole 2 in the case of FIG.
The means for forming the bent portion 3 and the cut-and-raised pieces 4a, 4b is appropriate, but, for example, when the filter element 1 is press-formed into a corrugated plate or when the through holes 2 are drilled. Can be formed.

Further, the plurality of filter elements 1a.
It is preferable that b is integrally fixed by an appropriate means, and in the case of the figure, a plurality of locations near the peripheral portion and the central portion of the filter elements 1a and 1b are integrally connected and fixed by rivets 5. Instead of the rivets as described above, they may be fixed with bolts, nuts or the like.

Further, in the illustrated example, the filter elements 1a and 1b integrally fixed to each other as described above are accommodated in the frame body 6, and the frame body 6 is arranged as shown in FIGS. It is composed of a rectangular frame body 6a having a substantially L-shaped cross section and a holding plate 6b, and the filter elements 1a and 1b integrally fixed to each other are housed in the frame body 6a, and the holding plate 6b is provided on the front surface thereof.
Is arranged, and the locking claw 61 formed on the front portion of the frame body 6a is bent and brought into contact with the pressing plate 6b so that the retaining hook is held. In the figure, 60 is a frame 6
An opening for discharging dust and the like provided on the lower surface of the opening 60 is also provided on the upper surface of the frame body 6.

In removing dust in a fluid such as soot by the dust collecting filter constructed as described above, the dust collecting filter is installed in the fluid passage in a direction perpendicular to the fluid inflow direction. Then, the fluid flowing from the front side of the frontmost filter element 1a toward the filter element 1a enters between the filter element 1a and the next filter element 1b through the through hole 2 of the filter element 1a. After that, the filter element 1b at the next position is distributed rightward and leftward and enters the through hole 2 of the filter element 1b. By repeating this a plurality of times, the fluid makes a large detour as shown by the arrow in the figure, and a plurality of filter elements 1 are provided.
Dust or the like having a large inertial force collides with the wall surfaces of the filter elements 1a and 1b to weaken the inertial force while passing through the through holes 2 of a. And then captured.

The trapped dust and the like may be cleaned and removed at appropriate times. At this time, since the dust collecting filter according to the present invention is made of the simple corrugated plate as described above, it can be easily removed. it can. In particular, when the corrugated plate-like filter element 1 is installed so that the ridgeline of the wave top is in the up-down direction as in the illustrated example, part of dust and the like trapped on the wall surface of the filter element falls under its own weight, and also the wall surface. Dust and the like remaining on the can be easily removed with a brush or the like. Further, in that case, as shown in FIG. 1, if an opening 60 for discharging the captured dust or the like is provided on at least the lower surface of the frame body 6, it can be removed without removing the frame body 6.

In the above embodiment, the odd-numbered filter element 1a and the even-numbered filter element 1b among the filter elements 1 arranged in order from the top in FIGS. 3 and 4 are used.
A filter element 1a having a shape different from
Each of 1b has a left-right symmetrical shape, but for example, the right half of the odd-numbered filter element 1a has the same shape as the right half of the even-numbered filter element 1b, and the left and right are alternately inverted. In the case of stacking layers, all the filter elements may have the same shape.

In addition, the above-mentioned embodiment uses each corrugated filter element 1
Although each of a and 1b is formed by one plate, it is also possible to connect a plurality of corrugated plates and the like to form one corrugated plate filter element. Furthermore, in the illustrated example, the corrugated plate-shaped filter elements 1a and 1b are arranged so as to overlap each other in a plane, but they may be arranged to be curved in an arc shape or a cylindrical shape, or may be arranged in a rectangular tube shape or any other shape. You can also

[0021]

As described above, the dust collecting filter according to the present invention is provided with a plurality of corrugated plate-like filter elements 1 which are sequentially stacked in the fluid passage at predetermined intervals.
A slit-shaped through hole 2 is provided at the top of either the front side or the rear side of each corrugated plate-like filter element 1 in the fluid inflow direction. Since the filter elements 1 are alternately arranged at the tops of the side walls and are offset from each other in the direction perpendicular to the stacking direction of the filter elements 1, a cross section is formed between the adjacent through holes 2 provided in each of the corrugated filter elements 1. A cross-section as in the prior art, which is substantially V-shaped and has a portion corresponding to the conventional V-shaped filter element in cross section and the through hole 2 corresponding to the gap between the adjacent conventional V-shaped filter elements. In the present invention, a configuration equivalent to a configuration in which a large number of substantially V-shaped filter elements are arranged in parallel in a plane at a predetermined interval, and a plurality of rows arranged in the plane is provided simply Multiple plate-shaped filter elements But only by structures easily configured provided, there are effects such that this type of dust collector easily, can be manufactured at a low cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a dust collecting filter according to the present invention.

FIG. 2 is a partially cutaway bottom view of the above embodiment.

FIG. 3 is an enlarged view of a part of FIG.

FIG. 4 is an enlarged cross-sectional view of a main part.

FIG. 5 is a plan view showing a schematic configuration of a conventional dust collection filter.

[Explanation of symbols]

 1, 1a, 1b Filter element 2 Through hole 3 Bent portion 4a, 4b Cut-and-raised piece 5 Fixing tool (rivet) 6 Frame body

Claims (6)

[Claims] 1. A plurality of corrugated plate-shaped filter elements, which are sequentially laminated in a fluid passage at a predetermined interval, are arranged, and the corrugated plate-shaped filter elements are arranged on the front side or the rear side in the fluid inflow direction. A slit-shaped through hole is provided at any one of the tops, and the through holes are provided alternately in the stacking order of the filter elements on the front and rear tops in the fluid inflow direction and at a right angle to the stacking direction of the filter elements. Dust collection filter characterized by being 2. The dust collecting filter according to claim 1, wherein a bent portion or a cut-and-raised piece is formed in a part of the filter element so that adjacent filter elements are positioned and held at a predetermined interval. 3. The dust collecting filter according to claim 2, wherein a bent portion is formed on a part of a peripheral edge of the filter element, and a cut-and-raised piece is formed on an edge portion of the through hole. 4. The dust collecting filter according to claim 1, wherein the plurality of filter elements are integrally fixed by a fixing tool such as a rivet which penetrates in the stacking direction. 5. The dust collecting filter according to claim 1, wherein the plurality of corrugated plate filter elements are housed and arranged in a frame. 6. The dust collecting filter according to claim 5, wherein an opening for discharging dust and the like captured by the filter element is provided on at least a lower surface of the frame body.