JP7454963B2 - dust collector - Google Patents

Description

The present invention relates to a dust collector.

Exhaust gas emitted from garbage incinerators, sewage sludge incinerators, etc. contains fine dust such as ash, metals, unburned carbon, and organic matter, so they must be removed before being discharged. As one of the devices for removing this fine dust, there is a filtration type dust collector (see, for example, Patent Document 1). The filtration type dust collector described in Patent Document 1 includes a ceramic filter that collects dust contained in exhaust gas and removes the dust from the exhaust gas, and a retainer that is inserted into the ceramic filter and reinforces the ceramic filter. . This retainer ensures earthquake resistance for the ceramic filter.

Japanese Patent Application Publication No. 2018-51542

However, in the filtration type dust collector described in Patent Document 1, the size of the retainer inserted into the ceramic filter must be changed depending on the size of the ceramic filter, which makes the device design complicated.

An object of the present invention is to provide a dust collector that can prevent damage to a ceramic filter due to shaking when an earthquake occurs, for example, with a simple configuration.

One aspect of the dust collector of the present invention is divided into a first chamber through which dust-containing air passes and a second chamber through which purified air through which the dust is removed and purified from the dust-containing air passes. a housing,
a ceramic filter disposed between the first chamber and the second chamber to remove the dust from the dust-containing air;
a floating support portion that swingably supports the ceramic filter with respect to the casing;
The ceramic filter is
a flange portion with an enlarged outer diameter formed at the upper end portion of the ceramic filter;
a body portion below the flange portion;
Equipped with
The casing has a support plate that supports the ceramic filter together with the floating support part,
The floating support portion has a ring-shaped portion surrounding the body portion of the ceramic filter when viewed from the vertical direction,
The flange portion of the ceramic filter is engaged with the ring-shaped portion of the floating support portion from above,
The floating support part further includes a fixing part that fixes the ring-shaped part in a downwardly compressed state with respect to the support plate of the casing,
The ring-shaped portion is made of an elastic body.

For example, if an earthquake occurs, the housing will also shake. The vibrations caused by the shaking of the housing are likely to be transmitted to the ceramic filter. Moreover, ceramic filters are fragile due to their structure, and depending on the degree of vibration, there is a risk that damage such as cracks may occur.
However, according to the present invention, the ceramic filter is swingably supported via the floating support portion, thereby preventing transmission of vibrations from the casing. This can prevent the ceramic filter from being damaged by shaking, for example, when an earthquake occurs.

Moreover, the floating support part can prevent vibration transmission to the ceramic filter, which is the object of damage prevention, in a concentrated manner, that is, preferentially and intensively. This makes it possible to prevent vibrations from being transmitted to the ceramic filter with a simple configuration, regardless of the size of the ceramic filter, that is, the overall length and outer diameter.

FIG. 1 is a vertical cross-sectional side view showing a first embodiment of the dust collector of the present invention. FIG. 2 is an enlarged detailed view of area A surrounded by a two-dot chain line in FIG. 1. FIG. 3 is a sectional view taken along line BB in FIG. 2. FIG. FIG. 2 is a vertical cross-sectional side view showing a second embodiment of the dust collector of the present invention. It is a vertical cross-sectional side view which shows 3rd Embodiment of the dust collector of this invention. FIG. 7 is a vertical cross-sectional side view showing a fourth embodiment of the dust collector of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The dust collector of the present invention will be described in detail below based on preferred embodiments shown in the accompanying drawings.
<First embodiment>
A first embodiment of a dust collector according to the present invention will be described with reference to FIGS. 1 to 3. Note that in the following, for convenience of explanation, three mutually orthogonal axes are set as an X axis, a Y axis, and a Z axis. As an example, an XY plane including an X axis and a Y axis is horizontal, and a Z axis is vertical. Further, in FIGS. 1 and 2 (the same applies to FIGS. 4 to 6), the upper side is sometimes called "upper (or upper)" and the lower side is sometimes called "lower (or lower)."

The dust collector 1 shown in FIG. 1 is installed, for example, in industrial facilities such as iron and steel manufacturing facilities, in addition to processing facilities that process industrial waste and household garbage, etc., and is installed in incinerators, crushing equipment, etc. is used to purify the dust-containing air AR1 discharged from This dust collector 1 includes a housing 2 that is the main body of the device, a plurality of ceramic filters 31 that capture foreign matter EM such as dust (including dust) contained in dust-containing air AR1, and processing air (air) AR3. A suction section 5 that sucks purified air AR2, a floating support section 6 that supports each ceramic filter 31, and a connecting section 7 that connects the ceramic filters 31 to each other. The configuration of each part will be explained below.

In this embodiment, the housing 2 has a truncated cone shape, and is supported with its central axis O2 aligned along the Z-axis direction (vertical direction). The interior of the casing 2 is partitioned into two vertical spaces by a partition wall 23. The lower space is the first chamber 21 through which the dust-containing air AR1 passes. The upper space is a second chamber 22 through which purified air AR2 passes through which foreign matter EM such as dust is removed from the dust-containing air AR1. Note that the shape of the housing 2 is not limited to a truncated cone shape, and may be, for example, a truncated quadrangular pyramid shape.

In addition to dividing the interior of the housing 2 into two vertical spaces, the partition wall 23 also functions as a support plate that collectively supports each ceramic filter 31 along with the floating support 6 . The partition wall portion 23 is formed with through holes 231 through which each ceramic filter 31 is inserted. As a result, each ceramic filter 31 is in a suspended state and cantilevered at the upper side. Furthermore, by placing each ceramic filter 31 in a suspended state, for example, the entire length of each ceramic filter 31 can be extended as much as possible to ensure a sufficient area for trapping foreign matter EM.

Further, in the side wall portion 27 of the casing 2, there is an introduction pipe 28 through which the dust-containing air AR1 is introduced into the first chamber 21 of the casing 2, and an inlet pipe 28 through which purified air AR2 is discharged from the second chamber 22 of the casing 2. A discharge pipe 52 is connected thereto.
The introduction pipe 28 communicates with the first chamber 21 . Further, the introduction pipe 28 is connected to the incinerator on the side opposite to the casing 2. Thereby, the dust-containing air AR1 generated in the incinerator can be introduced into the first chamber 21 of the casing 2 via the introduction pipe 28.

The discharge pipe 52 constitutes a part of the suction section 5 and communicates with the second chamber 22. The suction unit 5 has a pump (not shown) connected to the discharge pipe 52 on the opposite side of the housing 2 to the discharge pipe 52 . By operating this pump, the purified air AR2 in the second chamber 22 can be quickly discharged via the discharge pipe 52.
The bottom portion 24 of the housing 2 has a tapered shape. Thereby, when the foreign matter EM falls as described later, the foreign matter EM can be concentrated and collected at the center of the bottom portion 24.

A discharge pipe 25 for discharging foreign matter EM is connected to the center of the bottom portion 24 . The foreign matter EM collected at the center of the bottom portion 24 is quickly discharged to the outside via the discharge pipe 25. Thereby, it is possible to prevent foreign matter EM from remaining in the casing 2.
Further, a rotary valve 26 is installed in the discharge pipe 25. By operating the rotary valve 26, the foreign matter EM is forcibly discharged via the discharge pipe 25, and therefore the time required for discharge through the discharge pipe 25 can be shortened.

Each ceramic filter 31 is a filter material placed between the first chamber 21 and the second chamber 22. Each ceramic filter 31 is made of ceramic. Each ceramic filter 31 is formed into a cylindrical shape or a rectangular tube shape along the Z-axis direction. Moreover, the upper end of each ceramic filter 31 is open, and the lower end is closed. Then, as the dust-containing air AR1 passes through the ceramic filter 31 from the outside toward the inside, foreign matter EM contained in the dust-containing air AR1 is captured by the ceramic filter 31, as shown in FIG. Thereby, the foreign matter EM can be removed from the dust-containing air AR1, and thus purified air AR2 is generated. This kind of operation is called "dust collection operation."

Further, a flange portion 311 having an enlarged outer diameter is formed at the upper end portion of each ceramic filter 31. Furthermore, hereinafter, the portion of the ceramic filter 31 below the flange portion 311 will be referred to as the “body portion 312”.
Although the sizes (full length and outer diameter) of each ceramic filter 31 are the same in this embodiment, they are not limited to this and may be different from each other. Further, the total length of the ceramic filter 31 can be, for example, 1 m or more and 5 m or less. The outer diameter of the ceramic filter 31 can be, for example, 100 mm or more and 300 mm or less.

Note that although the number of ceramic filters 31 arranged is three in the configuration shown in FIG. 1, it is not limited to this, and may be, for example, one, two, or four or more. Further, when a plurality of ceramic filters 31 are arranged, these ceramic filters 31 are spaced apart along the horizontal direction, that is, arranged at intervals.

As shown in FIG. 1, when each ceramic filter 31 captures foreign matter EM, the foreign matter EM may adhere as is. In this case, the ceramic filter 31 may become clogged depending on the degree of adhesion of the foreign matter EM. Therefore, the ejection part 4 can eliminate clogging of the ceramic filter 31. Such an operation is called a "wipe-off operation." The ejection part 4 has an introduction pipe 42 that introduces the processing air AR3 into the housing 2.
The introduction pipe 42 is inserted into the second chamber 22 of the housing 2 . The inlet pipe 42 is connected to a compressor (not shown) on the side opposite to the housing 2. Thereby, the processing air AR3 can pass through the introduction pipe 42 as compressed air.

The introduction pipe 42 has a nozzle 421 facing each ceramic filter 31 . Each nozzle 421 can eject the processing air AR3 that has passed through the introduction pipe 42 toward the inside of the ceramic filter 31 facing the nozzle 421. Thereby, the foreign matter EM adhering to the ceramic filter 31 can be blown off to the outside of the ceramic filter 31 and removed, thereby making it possible to eliminate clogging of the ceramic filter 31.
Note that the foreign matter EM detached from the ceramic filter 31 falls inside the first chamber 21 of the casing 2 and reaches the bottom 24 of the casing 2 . Thereafter, the foreign matter EM is collected at the center of the bottom portion 24 and discharged from the discharge pipe 25.

In this way, in the dust collector 1, when the ceramic filter 31 is clogged due to foreign matter EM attached to the ceramic filter 31, the dust collector 1 is moved from the second chamber 22 side to the first chamber 21 side with respect to the ceramic filter 31. It is possible to blow out the processing air AR3 towards. As a result, the dust removal operation is performed, and the clogging of the ceramic filter 31 can be eliminated, so that the dust collection operation can be stably continued.

As described above, the dust collector 1 includes the floating support section 6. As shown in FIG. 2, the floating support portion 6 is a portion that swingably supports the ceramic filters 31 one by one with respect to the partition wall portion 23 of the housing 2. The floating support portion 6 includes a ring-shaped portion 61 and a fixing portion 62 that fixes the ring-shaped portion 61 to the partition wall portion 23 (support plate).

As shown in FIG. 3, the ring-shaped portion 61 has a ring shape surrounding the body portion 312 of the ceramic filter 31 when viewed from the Z-axis direction. Further, the flange portion 311 of the ceramic filter 31 is engaged with the ring-shaped portion 61 from above. This prevents the ceramic filter 31 from falling off. Note that the ring-shaped portion 61 only needs to have a function of surrounding the body portion 312. Therefore, the shape is not limited to a ring shape (circular shape), but may be a polygonal shape or a semicircular shape. However, even if the ring shape transmits vibration to each ceramic filter, the load can be transmitted more evenly.
The ring-shaped portion 61 has a first portion 611 and a second portion 612. The first portion 611 is located between the outer circumferential surface 313 of the body portion 312 of the ceramic filter 31 and the inner circumferential surface 232 of the through hole 231 of the partition wall portion 23 . The second portion 612 is integrally formed with the first portion 611 and is located on the upper surface 233 of the partition wall portion 23 .

Such a ring-shaped portion 61 is composed of an elastic body 63 having elasticity. As a result, the ceramic filter 31 is in a floating state where it is swingably supported with respect to the partition wall portion 23 of the housing 2 . The constituent material of the elastic body 63 is not particularly limited, and examples thereof include various rubber materials such as urethane rubber and silicone rubber, and various thermoplastic elastomers such as styrene and polyurethane. One type or a mixture of two or more types can be used.

The fixing portion 62 has a ring shape surrounding the flange portion 311 of the ceramic filter 31 when viewed from the Z-axis direction. Furthermore, the fixing portion 62 holds the ring-shaped portion 61 between it and the partition wall portion 23 of the housing 2 . Thereby, the ring-shaped portion 61 can be fixed to the partition wall portion 23.

For example, when an earthquake occurs, the housing 2 also shakes. The vibrations caused by the shaking of the housing 2 are likely to be transmitted to each ceramic filter 31. However, since each ceramic filter 31 is in the above-described floating state, transmission of vibrations from the housing 2 is prevented.
Each ceramic filter 31 is fragile due to its structure, and depending on the degree of vibration, damage such as cracks may occur.

In the dust collector 1, vibration transmission from the housing 2 to each ceramic filter 31 is prevented as described above. This can prevent damage to the ceramic filter 31 due to shaking, for example, when an earthquake occurs. Furthermore, by using the ring-shaped portion 61 surrounding the ceramic filter 31, vibration transmission to the ceramic filter 31 can be stabilized with a simple configuration, regardless of the size of the ceramic filter 31, that is, the overall length and outer diameter. can be prevented.
As described above, the dust collector 1 is a device that uses the floating support portion 6 to centrally damp the vibration of the ceramic filter 31, which is the object of vibration damping, that is, preferentially and intensively damps the vibration.

Further, the ring-shaped portion 61 (elastic body 63) tightens the body portion 312 of the ceramic filter 31 from the outside, and is compressed downward by the fixing portion 62, that is, toward the partition wall portion 23. There is. When the tightening force of the ring-shaped portion 61 is F1 and the compressive force of the fixing portion 62 is F2, it is preferable that the relationship of tightening force F1>compressive force F2 is satisfied. Thereby, the floating state can be maintained in just the right amount.

Further, the first portion 611 of the ring-shaped portion 61 is compressed between the outer circumferential surface 313 of the body portion 312 of the ceramic filter 31 and the inner circumferential surface 232 of the through hole 231 of the partition wall portion 23. There is. Thereby, airtightness between the ceramic filter 31 and the partition wall portion 23 is maintained. In this way, the ring-shaped portion 61 also functions as a sealing material. Thereby, the dust-containing air AR1 in the first chamber 21 can be prevented from passing between the ceramic filter 31 and the partition wall 23 and entering the second chamber 22.

As shown in FIG. 1, a connecting portion 7 for connecting the ceramic filters 31 to each other is provided on the lower side between adjacent ceramic filters 31. The connecting portion 7 includes a hard bar (rod-shaped body) 71, a rotating connecting portion 72 that rotatably connects one end of the bar 71 and one ceramic filter 31, and a rotating connecting portion 72 that rotatably connects one end of the bar 71 and one ceramic filter 31. It has a rotational connection part 73 that rotatably connects the ceramic filter 31.

As described above, the ceramic filters 31 are spaced apart from each other in the horizontal direction. The connecting portion 7 can maintain the separation distance between the ceramic filters 31. Thereby, even if each ceramic filter 31 swings, the ceramic filters 31 are prevented from colliding with each other. This can prevent each ceramic filter 31 from being damaged by collision.

<Second embodiment>
Hereinafter, a second embodiment of the dust collector of the present invention will be described with reference to FIG. 4, but the explanation will focus on the differences from the embodiments described above, and the explanation of similar matters will be omitted.
This embodiment is the same as the first embodiment except that the structure of the ring-shaped part included in the floating support part is different.

As shown in FIG. 4, in this embodiment, the ring-shaped portion 61 has a third portion 613. The third portion 613 is formed integrally with the first portion 611 and is located on the opposite side from the second portion 612, that is, on the lower surface 234 of the partition wall portion 23. Further, the ring-shaped portion 61 is in a state in which the partition wall portion 23 is sandwiched between the second portion 612 and the third portion 613. This improves the sealing performance at the ring-shaped portion 61.

<Third embodiment>
Hereinafter, a third embodiment of the dust collector of the present invention will be described with reference to FIG. 5, but the explanation will focus on the differences from the embodiments described above, and the explanation of similar matters will be omitted.
This embodiment is the same as the first embodiment except that the structure of the ring-shaped part included in the floating support part is different.

As shown in FIG. 5, in this embodiment, the ring-shaped portion 61 is composed of a soft porous body 64. The soft porous body 64 is not particularly limited, and for example, a rubber sponge or the like can be used. Configuring the ring-shaped portion 61 with the soft porous body 64 is an effective configuration, for example, when it is desired to use the soft porous body 64 instead of the elastic body 63.

<Fourth embodiment>
Hereinafter, a fourth embodiment of the dust collector of the present invention will be described with reference to FIG. 6, but the explanation will focus on the differences from the embodiments described above, and the explanation of similar matters will be omitted.
This embodiment is the same as the second embodiment except that the structure of the ring-shaped part included in the floating support part is different.

As shown in FIG. 6, in this embodiment, the ring-shaped portion 61 is composed of a soft hollow body 65. The constituent material of the outermost part 651 of the soft hollow body 65, that is, the portion defining the hollow portion 652, is not particularly limited, and for example, the same constituent material as the elastic body 63 described above can be used. Further, the hollow portion 652 is filled with a gas such as air. Configuring the ring-shaped portion 61 with the soft hollow body 65 is an effective configuration, for example, when it is desired to use the soft hollow body 65 instead of the soft porous body 64.

Although the dust collector of the present invention has been described above with reference to the illustrated embodiment, the present invention is not limited to this, and each part constituting the dust collector may have any configuration that can perform the same function. It can be replaced with that of . Moreover, arbitrary components may be added.
Further, the dust collector of the present invention may be a combination of any two or more configurations (features) of the above embodiments.

1 Dust collector 2 Housing 21 1st chamber 22 2nd chamber 23 Partition wall 231 Through hole 232 Inner peripheral surface 233 Top surface 234 Lower surface 24 Bottom 25 Discharge pipe 26 Rotary valve 27 Side wall 28 Introductory pipe 31 Ceramic filter 311 Flange 312 Body 313 Outer circumferential surface 4 Spout part 42 Introductory pipe 421 Nozzle 5 Suction part 52 Discharge pipe 6 Floating support part 61 Ring-shaped part 611 First part 612 Second part 613 Third part 62 Fixed part 63 Elastic body 64 Soft porous body 65 Soft hollow body 651 Outermost part 652 Hollow part 7 Connecting part 71 Bar (rod-shaped body)
72, 73 Rotating joint AR1 Dust-containing air AR2 Purified air AR3 Processing air (air)
EM Foreign object F1 Tightening force F2 Compressive force O2 Center axis

Claims (8)

a casing divided into a first chamber through which dust-containing air passes, and a second chamber through which purified air through which the dust is removed from the dust-containing air passes;
a ceramic filter disposed between the first chamber and the second chamber to remove the dust from the dust-containing air;
A dust collector comprising a floating support portion that swingably supports the ceramic filter with respect to the casing,
The casing has a support plate that supports the ceramic filter together with the floating support part,
The ceramic filter is
a flange portion with an enlarged outer diameter formed at the upper end portion of the ceramic filter;
a body portion below the flange portion;
Equipped with
The floating support portion has a ring-shaped portion surrounding the body portion of the ceramic filter when viewed from the vertical direction,
The flange portion of the ceramic filter is engaged with the ring-shaped portion of the floating support portion from above,
The floating support part further includes a fixing part that fixes the ring-shaped part in a downwardly compressed state with respect to the support plate of the casing,
The ring-shaped part is a dust collector made of an elastic body. a casing divided into a first chamber through which dust-containing air passes, and a second chamber through which purified air through which the dust is removed from the dust-containing air passes;
a ceramic filter disposed between the first chamber and the second chamber to remove the dust from the dust-containing air;
A dust collector comprising a floating support portion that swingably supports the ceramic filter with respect to the casing,
The casing has a support plate that supports the ceramic filter together with the floating support part,
The ceramic filter is
a flange portion with an enlarged outer diameter formed at the upper end portion of the ceramic filter;
a body portion below the flange portion;
Equipped with
The floating support portion has a ring-shaped portion surrounding the body portion of the ceramic filter when viewed from the vertical direction,
The flange portion of the ceramic filter is engaged with the ring-shaped portion of the floating support portion from above,
The floating support part further includes a fixing part that fixes the ring-shaped part in a downwardly compressed state with respect to the support plate of the casing,
The ring-shaped part is a dust collector made of a soft porous material. a casing divided into a first chamber through which dust-containing air passes, and a second chamber through which purified air through which the dust is removed from the dust-containing air passes;
a ceramic filter disposed between the first chamber and the second chamber to remove the dust from the dust-containing air;
A dust collector comprising a floating support portion that swingably supports the ceramic filter with respect to the casing,
The casing has a support plate that supports the ceramic filter together with the floating support part,
The ceramic filter is
a flange portion with an enlarged outer diameter formed at the upper end portion of the ceramic filter;
a body portion below the flange portion;
Equipped with
The floating support portion has a ring-shaped portion surrounding the body portion of the ceramic filter when viewed from the vertical direction,
The flange portion of the ceramic filter is engaged with the ring-shaped portion of the floating support portion from above,
The floating support part further includes a fixing part that fixes the ring-shaped part in a downwardly compressed state with respect to the support plate of the casing,
The ring-shaped part is a dust collector composed of a soft hollow body. The dust collector according to claim 3, wherein a constituent material of the portion defining the soft hollow body is an elastic material. The dust collector according to any one of claims 1 to 4, wherein the ring-shaped portion also functions as a sealing material that maintains airtightness between the ceramic filter and the support plate. A through hole through which the ceramic filter is inserted is formed in the support plate,
The ring-shaped part has a first part and a second part,
The first portion is located between the outer peripheral surface of the body of the ceramic filter and the inner peripheral surface of the through hole of the support plate,
the second portion is located on the upper surface of the support plate;
The dust collector according to claim 5. The dust collecting device according to claim 5 or 6, wherein the ring-shaped portion holds the support plate. A plurality of the ceramic filters are arranged next to each other,
The dust collector according to any one of claims 1 to 7, wherein a connecting portion is provided between the adjacent ceramic filters to connect the ceramic filters to each other and maintain a separation distance between the ceramic filters. .

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