JP2001205031A - Filter and combined filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter and a combined filter which can efficiently purify a fluid, an object to be purified, with a low pressure loss at the time of purification and whose pressure loss value can easily be calculated. SOLUTION: This filter comprises a cylindrical casing having a flow inlet and a flow outlet and so composed as to introduce a fluid such as a gas or a liquid, an object to be purified, into. The inside of the casing is filled with an adsorbent. A filter element is constituted by forming members for preventing leakage of the adsorbent through the flow inlet and the flow outlet while keeping the fluid, the object to be purified, being introduced into the inside of the casing. A plurality of filter elements with such a structure are linearly arranged side by side and filter elements arranged in such a manner are arranged side by side in a plurality of rows and bypass holes to make the object fluid bypassing the filter elements are formed among the filter elements.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter and a combination filter, and more particularly to, for example, a filter and a combination filter capable of efficiently purifying a fluid to be purified with a small pressure loss.

[0002]

2. Description of the Related Art Conventionally, a filter for purifying a gas such as waste gas or a liquid such as waste water has a fluid passage property such as a perforated plate or a wire net in a path through which a gas or a liquid to be purified is discharged. 2. Description of the Related Art There is known a filter configured by providing a plurality of walls from a material and filling the walls with an adsorbent such as activated carbon having a high adsorptivity.

[0003]

However, in order to achieve sufficient purification by such a filter, a large amount of adsorbent must be filled between the walls of a perforated plate, a wire mesh, or the like. The exhaust path of the gas or fluid to be purified is completely covered, and the pressure loss of the gas or fluid to be purified is severe. In addition, since the degree of pressure loss varies depending on the degree of filling of the filled adsorbent, adjustment by trial and error has been often required at the installation site.

[0004] Therefore, a main object of the present invention is to reduce the pressure loss of the fluid to be purified during purification, to perform the purification efficiently, and to easily calculate the value of the pressure loss. And a combination filter.

[0005]

According to the present invention, there is provided a cylindrical casing having an inflow port and an outflow port, into which an object to be purified of a fluid such as gas or liquid can be introduced. A filter element including an adsorbent filled therein and a member for preventing the adsorbent from spilling out of an inlet and an outlet while maintaining a state in which a substance to be purified of a fluid can be introduced; A plurality of adjacently arranged in a straight line are arranged adjacently in a plurality of rows in parallel, characterized in that the filter element has a bypass hole that can bypass a substance to be purified of fluid,
In this case, which is a filter, the object to be purified that has passed through the inside of the filter element is purified, and the object to be purified that has passed through the bypass path passes through the path that bypasses while maintaining the fluid pressure.

In the present invention, the front portion of the filter element may have a taper whose outer diameter increases from upstream to downstream in the inflow direction of the object to be purified. In this case, the object to be purified that does not pass through the inside of the filter element is guided to the bypass hole for smoothly bypassing, so that the fluid pressure is not lost.

Further, according to the present invention, the filter element may be attached to a plate having a plurality of holes for mounting the filter element and a plurality of bypass holes for bypassing a substance to be purified. In this case, handling and distribution are improved.

According to the present invention, there is provided a filter according to any one of claims 1 to 3, and a bypass hole at a position of an outlet of a filter element of the filter according to any one of claims 1 to 3. A plurality of filters formed by shifting only the positions of the filter elements of the filter according to any one of claims 1 to 3 are arranged from upstream to downstream in the inflow direction of the material to be purified. A combination filter. In this case, the object to be purified that has passed through the inside of the filter element is purified, and the object that has passed through the bypass path is purified by the filter element of the filter located on the downstream side.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention with reference to the accompanying drawings.

[0010]

FIG. 1 is a schematic front view showing an embodiment of a filter according to the present invention, and FIG. 2 is a side view of the filter shown in FIG. The filter according to this embodiment is a filter optimized for purifying exhaust gas discharged from a waste tire incinerator or the like. Filter 1
0 includes the mounting plate 12. The mounting plate 12 is for mounting a plurality of filter elements 16 described later. The mounting plate 12 is installed on the exhaust gas discharge path so as to face the direction in which the exhaust gas flows. The outer shape is a rectangular shape, and the inner shape is a shape in which a plurality of circular mounting frames 14 are arranged adjacent to each other in a straight line and arranged in parallel. Thereby, the inside of the mounting plate 12 is provided with a plurality of circular mounting holes 14a and a plurality of substantially rhombic bypass holes 14b, and has a shape through which the exhaust gas as a substance to be purified can flow. In this embodiment, ceramic is used as the material in consideration of the temperature of the exhaust gas, and the material is formed in the shape by sintering.

A plurality of filter elements 16 each having a cylindrical shape with a circular cross section are mounted on the filter 12. As shown in FIG. 7, the filter element 16 includes a front casing 18, a rear casing 20, and activated carbon 22.

The front casing 18 is a cylindrical body having a circular cross section. At the center thereof, a body 18 having an outer diameter slightly smaller than the inner diameter of the mounting hole 14a is provided.
a. The body 18a is provided with the filter element 16.
Is a portion disposed inside the mounting frame 14, that is, in the mounting hole 14a when being mounted on the mounting plate 12.

An upper portion of the body portion 18a, on the upstream side in the exhaust gas inflow direction, has a taper portion 18b provided with a taper so that the outer diameter increases from upstream to downstream in the inflow direction. The outer diameter at the foremost part of the tapered portion 18b is formed substantially equal to the outer diameter of the body 16a. The outer shape at the rearmost portion of the tapered portion 18b is formed to be substantially equal to the diameter of the outer contour of the mounting frame 14 described above.
When the filter element 16 is mounted on the mounting plate 12, the filter element 16 is locked on the front surface of the mounting frame 14 by the lower surface of the rearmost portion of the tapered portion 18b.

As shown in FIG. 5, a lattice 18d is provided in the opening 18c on the front surface of the tapered portion 18b.
The grid 18d is provided with the activated carbon 2 filled therein while maintaining a state in which exhaust gas can flow through the filter element 16.
2 does not spill out.

As shown in FIG. 7, an engaging groove 18e is formed on a part of a side surface of the rear portion of the body 18a by dug the entire circumference. The engagement groove 18 e is a groove for engaging with the projection 20 a formed on the inner surface of the rear casing 20 when the front casing 18 and the rear casing 20 are combined. Behind the engaging groove 18e, a groove is dug linearly from the front to the rear to form an introduction groove 18f. The introduction groove 18f is a groove for guiding the protrusion 20a into the engagement groove 16e when the front casing 18 and the rear casing 20 are combined.

The rear casing 20 is a cylindrical body having a circular cross section. The outer diameter is equal to the outermost diameter of the foremost part of the tapered portion 18b. The inner diameter is formed slightly larger than the outer diameter of the body 18a of the front casing 18. Further, as described above, a part of the inner surface
0a is formed. As described above, the projection 20a is a projection that is guided into the engagement groove 18e from the introduction groove 18f and engages with the engagement groove 18e.

An opening 20a on the rear surface of the rear casing 20
A lattice 20b similar to the lattice 18d formed on the front casing 18 is provided on the front casing 18. The grid 20b is for preventing the activated carbon 22 filled therein from spilling out while maintaining a state in which the exhaust gas can flow through the filter element 16 like the grid 18d.

In this embodiment, the front casing 18 and the rear casing 20 are formed by sintering the ceramic into the above-described shape.

The interior of the front casing 18 is filled with activated carbon 22 as an adsorbent. As the shape of the activated carbon 22, for example, granular activated carbon 22 having a size larger than the gap between the lattice 18d and the lattice 20b is used.

As shown in FIG. 8, the front casing 18,
The rear casing 20 and the activated carbon 22 are attached to the mounting holes 14a.
After the body 18a of the front casing 18 is inserted into the inside, the interior is filled with activated carbon 22, and the rear casing 20 is assembled from the rear to be attached to the mounting plate 12,
The filter element 16 is constituted. The combination of the front casing 18 and the rear casing 20 is such that the projection 20a is guided from the introduction groove 18f to the engagement groove 18e as shown in FIGS. 9 (a), 9 (b) and 9 (c). The front casing 18 and / or the rear casing 2 may be combined with the front casing 18 and the rear casing 20 so that the protrusion 20a is disengaged from the portion where the introduction groove 16e is located.
Combining them so that they do not come off easily by rotating 0.

By mounting the filter elements 16 in all the mounting holes 14, the filter 10 as shown in FIG. 1 is formed. As described above, the filter 10 is installed in the discharge path so as to face the inflow direction of the exhaust gas.
In the filter 10, a part of the exhaust gas passes through the filter element 16 to remove (adsorb) harmful substances. The other exhaust gas passes through the bypass hole 14b while maintaining the pressure substantially.

FIG. 10 is a schematic front view showing another embodiment of the filter according to the present invention, and FIG.
FIG. 4 is an enlarged view taken along line AB in FIG. This filter 30
Is the filter 1 described above, as shown in FIGS.
Although 0, the components, and the outer shape are the same as those of the filter 10, only the position of the mounting frame 34 of the mounting plate 32 is shifted from the position of the filter 10. Filter 3
At 0, the mounting frame 34 is shifted so that the center of the mounting hole 34a of the filter 30 is located at the center of the bypass hole 14b of the filter 10 when the filter 30 and the filter 10 are overlapped. . In other words, in the filter 30, when the filter 30 and the filter 10 are overlapped, the bypass hole 34b of the filter 30
The mounting frame 34 is displaced so that the center of the mounting frame 14 is located at the center of the mounting hole 14a of the filter 10.

The filter 30, like the filter 10, is installed in the discharge path so as to face the exhaust gas inflow direction. Also in the filter 30, a part of the exhaust gas passes through the filter element 16 to remove (adsorb) harmful substances. The other exhaust gas passes through the bypass hole 34b while maintaining the pressure substantially.

FIG. 12 is an illustrative view showing a combination filter 50 in which a plurality of filters 10 and filters 30 are alternately provided in an exhaust gas discharge path. In the case of this combination filter 50, as shown in FIG. 13, the exhaust gas first passes through the filter element 16 attached to the filter 10 (the filter 30) to remove harmful substances, and then is installed at the next stage. It passes through the bypass hole 34b (bypass 14a) of the filtered 30 (filter 10). On the other hand, the bypass hole 14b (the bypass hole 34) is not passed through the filter element 16 of the filter 10 (the filter 30).
Exhaust gas passing through b) is passed through a filter 3 installed in the next stage.
The harmful substances are removed by passing through the filter element 16 of 0 (filter 10).

As described above, in the case of the combination filter 50, most of the exhaust gas passes through the filter element 16, so that the exhaust gas can be efficiently purified. Further, since the exhaust gas discharge path is not completely blocked, the pressure loss of the exhaust gas can be minimized. Further, by analyzing the filter elements at each stage, it is possible to more accurately grasp which substance is most purified (adsorbed) at which position as compared with the filters 10 and 30.

In the combination filter 50, the combination filter 50 is constituted by using a plurality of filters 10 and 30. However, the present invention is not limited to this. As appropriate
An appropriate number of filters 10 and filters 30 may be used in consideration of desired purification performance and the degree of pressure loss of exhaust gas.

In the above-described embodiment, the outer shape of the mounting plate 12 and the mounting plate 32 is rectangular. However, the present invention is not limited to this. Is also good. Further, ceramic is used as the material of the mounting plate 12 and the mounting plate 32. However, the material is not limited to this, and it is not limited to this.
It may be changed to metal such as plastic or stainless steel in consideration of stress applied to the filter and the like.

Further, in the above-described embodiment, the material of the front casing 18 and the rear casing 20 of the filter element 16 is also made of ceramic. However, the material is not limited to this. Or the like.

In the embodiment described above, the cross-sectional shape of the filter element 16 and the mounting frames 14, 34
Is a circular shape, but is not limited to this, and may be formed in a geometrical shape such as an ellipse or a polygon having four or more corners. That is, when a plurality of the mounting frames 14 are arranged adjacent to each other in a straight line, a plurality of
It is sufficient that the shape is such that the bypass hole 14b is formed in addition to the shape a.

Further, in the above-described embodiment, the filter and the combination filter applied to the purification of the exhaust gas discharged from the waste tire incinerator are exemplified. However, the present invention is not limited to this. May be applied to liquids such as wastewater discharged from the water.

[0031]

According to the filter and combination filter according to the present invention, it is possible to purify efficiently by minimizing the pressure loss of gas or liquid such as exhaust gas or waste water, which is a substance to be purified. . Further, the value of the pressure loss due to the installed filter can be easily calculated. Furthermore, in the purification process, which substance is most purified (adsorbed) at which position
Can be easily grasped by analyzing each filter element, so that the filter can be arranged at a position most suitable for a place to be applied. Adding data can be collected.

[Brief description of the drawings]

FIG. 1 is an illustrative front view showing one embodiment of a filter according to the present invention.

FIG. 2 is a side view showing the filter shown in FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is an illustrative sectional view not showing the activated carbon along line BB in FIG. 1;

FIG. 5 is an enlarged view taken along line AB in FIG. 1;

FIG. 6 is an enlarged schematic view not showing the activated carbon along line CC in FIG. 4;

FIG. 7 is an illustrative sectional view showing a filter element.

FIG. 8 is a perspective view showing attachment of the filter element to the attachment plate.

9A is an illustrative view showing a state in which the front casing and the rear casing are combined, and FIG. 9B is an illustrative view showing a state in which the rear casing is fitted in the front casing; (C) is an illustrative view showing a state where the front casing and the rear casing are rotated and combined;

FIG. 10 is an illustrative front view showing another embodiment of the filter according to the present invention;

FIG. 11 is an enlarged view taken along a line AB in FIG. 10;

FIG. 12 is an illustrative view showing a combination filter in which a plurality of filters 10 and filters 30 are alternately provided in an exhaust gas discharge path.

FIG. 13 is an illustrative view showing exhaust gas flowing in the combination filter;

[Description of Signs] 10, 30 Filter 12, 32 Mounting Plate 14, 34 Mounting Frame 14a, 34a Mounting Hole 14b, 34b Bypass Hole 16 Filter Element 18 Front Casing 20 Rear Casing 22 Activated Carbon 50 Combination Filter

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B01D 53/81 B01D 53/34 A C02F 1/28 F-term (Reference) 4D002 AB02 AC04 AC10 BA04 CA07 DA41 EA03 GA02 GB02 GB04 HA03 HA10 4D012 CA12 CB01 CE02 CF05 CG01 CG02 CK05 CK07 CK10 4D017 AA01 BA03 CA03 CB01 DA01 EA05 EB06 4D024 AA04 AB01 BA02 BB01 BC02 CA04 DA02 DA04

Claims (4)

[Claims] 1. A cylindrical casing having an inflow port and an outflow port, into which a substance to be purified such as gas or liquid can be introduced, and an adsorbent filled in the casing. And a member that prevents the adsorbent from spilling out of the inflow port and the outflow port while maintaining a state in which the substance to be purified of the fluid can be introduced, wherein the filter element is straight. A plurality of adjacently arranged in a plurality are arranged in parallel in a plurality of rows, and a bypass hole is provided between the filter elements so that a substance to be purified of the fluid can be bypassed.
filter. 2. The filter according to claim 1, wherein a front portion of the filter element has a taper whose outer diameter increases from upstream to downstream in the inflow direction of the substance to be purified. 3. The filter element according to claim 1, wherein the filter element is attached to a plate having a plurality of holes for mounting the filter element and a plurality of bypass holes for bypassing the fluid to be purified. Filter. 4. The filter according to claim 1, wherein a bypass hole is located at a position of an outlet of the filter element of the filter according to any one of claims 1 to 3. A plurality of filters formed by shifting only the position of the filter element of the filter according to any one of claims 1 to 3 from upstream to downstream in the inflow direction of the substance to be purified. The combination filter to be placed.