JP3683507B2 - Multistage dust collector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multistage dust collecting apparatus in which self-supporting (honeycomb type) filter units that can be backwashed are stacked in a plurality of stages in the vertical direction.
[0002]
[Prior art]
In the case of increasing the processing capacity in the conventional general exhaust gas treatment apparatus, a plurality of filters are arranged in parallel or the treatment apparatuses themselves are arranged in parallel. If the two are arranged in parallel, there is a problem that the installation area of the apparatus increases.
[0003]
On the other hand, for example, a “multi-stage exhaust gas treatment apparatus” described in Japanese Patent Publication No. 6-61415 is formed by dividing a vertical casing into a plurality of stages of treatment chambers in the vertical direction. By disposing the honeycomb type filter in the processing chamber, the exhaust gas processing is performed in a plurality of processing chambers in the vertical direction. Therefore, compared to the conventional parallel processing apparatus, the entire apparatus is installed. It has the advantage that only the exhaust gas treatment capacity can be increased without increasing the area.
[0004]
[Problems to be solved by the invention]
However, the conventional “multi-stage exhaust gas treatment device” disclosed in the above publication can reduce the space area of the floor to be installed, but moves up and down the multi-stage treatment chambers in which the honeycomb type filter is disposed. Due to the installation in the direction, the height (height) of the entire device becomes high, and there is a problem that problems may occur due to the size of the factory where it is installed, or problems due to height during maintenance will occur. In addition, there was a problem that various obstacles such as an increase in equipment production costs occurred.
[0005]
Therefore, the technical problem of the present invention is not only to reduce the installation area of the entire dust collection facility, but also to keep the height of the facility as low as possible and to reattach dust in the filter cleaning to the adjacent filter. An object of the present invention is to provide a multi-stage dust collecting device which is devised so as to prevent and improve the dust removal performance of the filter while simplifying maintenance at the time of filter replacement.
[0006]
[Means for Solving the Problems]
(1) In order to solve the above technical problem, in the present invention, as described in claim 1, the inside of the dust collector main body is divided into two left and right rooms by an intermediate partition wall, and one room is divided into dust-containing air currents. A dust collecting device having a dust chamber provided with an inflow port and a clean chamber provided with a clean air discharge port on the other side, wherein the intermediate partition wall is inclined downward from the upper side toward the dust chamber side. The vertical partition plate and the horizontal partition plate that are provided at right angles to the lower end of the vertical partition plate and that are inclined downward toward the clean room are alternately and continuously provided in the vertical direction. together constitute a cross section serrated by, opening a vent leading to the dust chamber to the horizontal partition, which like the top of each horizontal partition, a plurality of filter units described above the inlet air side of the respective through vents to face the above dust chamber, and, the respective exhaust-side It is constructed so as to be mounted in a multi-stage manner in the state where it faces the clean room.
[0007]
According to the above means (1), the installation area of the dust collector can be reduced from the configuration in which a plurality of filter units are stacked one above the other, while the intake side and the exhaust side of each filter unit can be reduced. The dust collector main body is divided into a dust chamber and a clean chamber, which are divided in the left-right and left-right directions, respectively, so that the direction of the dust-containing air flow in each filter unit stacked in multiple stages is configured to flow horizontally. Therefore, compared to the conventional processing apparatus that processes by flowing a dust-containing airflow in the vertical direction, it is possible to make the apparatus in a state where the height of the entire apparatus is kept low.
[0008]
Further, according to the above means (1), when the filter unit is backwashed by blowing high-pressure air into the bench lily pipe, each filter unit is inclinedly attached to the intermediate partition wall formed in a substantially sawtooth cross section. Therefore, the dust that has been wiped off falls along the surface of the back plate of the lower filter unit, so that the dust removed by the filter unit directly below does not fall and suffer, so Even in a structure in which the filter units are stacked one above the other, it is possible to reduce as much as possible the amount of dust removed from the upper filter unit and reattaching to the lower filter unit.
[0009]
(2) Further, in the present invention, as described in the second aspect, the plurality of filter units are inclined with the inlet side directed obliquely upward and the exhaust side directed obliquely downward with respect to the intermediate partition wall. It is constructed so that a dust-containing air flow inlet is provided at the bottom of the inlet side of each of these filter units, and a venturi pipe for dust removal air blowing is provided at each exhaust side. .
[0010]
According to the above means (2), since the plurality of filter units are mounted in an inclined state with respect to the intermediate partition wall, the width of the dust collector main body is larger than when each filter unit is mounted horizontally. As a result, the installation area of the dust collector can be further reduced. In addition, each filter unit is provided with an air inlet for dust-containing airflow at the bottom of the inlet side of the filter unit, so that dust falling from the upper filter unit by dust-removing air blown from the bench-lily pipe is on the lower filter unit. It is possible to reduce the amount of re-adhering from the air inlet.
[0011]
(3) Further, in the present invention, as described in the third aspect, the entire filter unit is configured such that the bottom surface on the inlet side is the inlet for dust-containing airflow, and the direction of 90 degrees with respect to the inlet. One side surface of the different exhaust side is formed in a substantially box shape having an exhaust port for filtered air.
[0012]
(4) Further, according to the present invention, as described in the fourth aspect of the present invention, the entire filter unit is a self-supporting structure in which a large number of filter holes serving as an intake passage are arranged side by side. By combining a large number of exhaust passages with a gap between them, the bottom side is formed as a dust-containing air inlet opening at the lower end of each inlet passage. The side surfaces of which the directions are 90 degrees different from each other are configured in a substantially box shape formed with a filtered air exhaust port opened by the front end port of the exhaust passage. An air chamber is provided between the cover plate and the lid plate to be closed, and a venturi tube for dust removal air blowing that also serves as a flow tube for filtered air is provided on the cover plate.
[0013]
According to the means of (3) and (4) above, the dust-containing air flow taken in from the bottom air inlet is formed by providing the air inlet and the air outlet in each filter unit 90 degrees apart. After filtration, the filtered air can be discharged from the exhaust port in the lateral direction of the filter unit. Furthermore, according to the above means (4), the high-pressure air for dust removal blown into the filter unit through the bench tube is once flowed into the air chamber and compressed, and then blown into the filter hole of each filter unit. This makes it possible to reliably exert backwashing action with stronger high-pressure air to every corner of the filter unit.
[0014]
( 5 ) Further, in the present invention, as described in claim 5 , a lid plate provided with a venturi tube for dust removal air blowing that also serves as a flow tube for filtered air is attached to the filter unit so as to be freely opened and closed. A maintenance door is provided on the wall surface of the dust collector main body close to the Venturi tube.
[0015]
According to the above means ( 5 ), various maintenances such as filter replacement and repair for each filter unit can be easily performed by opening the front maintenance door and opening the cover plate to which the bench lily tube is attached. To be able to do.
[0016]
As described above, the technical problems described above can be solved by the means described in the above (1) to ( 5 ), and the problems of the conventional techniques can be solved.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a multistage dust collector according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the whole of the present invention, and FIG. 2 is a side view showing the internal structure of the dust collector body. 3 is a side view of the filter unit, FIG. 4 is a front view of the dust collector main body, and FIG. 5 is a plan view of the dust collector main body. Is divided into a left chamber and a right chamber of a dust chamber 3 and a clean chamber 4 by an intermediate partition wall 2, and an inlet 3 </ b> A connected to a suction duct 3 </ b> R for dust-containing airflow is provided on the upper surface of the dust chamber 3, On the upper surface of the clean chamber 4, a discharge port 4 </ b> A connected to the exhaust duct 4 </ b> R is provided.
[0018]
In FIG. 1, reference numeral 6 generally indicates a blower device provided at the front end side of the exhaust duct 4R. The blower device 6 includes a fan 6F, a fan motor 6M, a flow rate adjusting valve 6X, and the like. The dust-collecting air flow (exhaust gas) generated in an incinerator or the like is sucked into the dust chamber 3 through the suction duct 3R by applying a suction action by the rotation of the fan 6F to the dust collector main body 1, and this dust-containing After the airflow is filtered by the respective filter units 10 attached to the intermediate partition wall 2 in a multistage manner, the purified air is discharged from the clean chamber 4 to the outside air through the exhaust duct 4R and the blower device 6 described above. ing.
[0019]
The intermediate partition wall 2 described above is connected to the vertical partition plate 2A inclined downward from the upper side toward the dust chamber 3 as shown in FIG. 2, and connected to the lower end portion of the vertical partition plate 2A at a right angle, and The horizontal partition plate 2B that is inclined downward toward the clean chamber 4 side is alternately and continuously provided in the vertical direction, so that the whole is formed in a substantially serrated cross section, and each horizontal partition plate 2B. Dust-containing airflow vents 2D (see FIGS. 3, 6, and 7) are opened, and on each of these horizontal partition plates 2B... It is configured to be aligned and attached to the mouth 2D.
[0020]
Each of the above-described filter units 10 includes each of the above-described intermediate partition walls 2 as is apparent from the description of FIG. 3 described above, the exploded perspective view shown in FIG. 6, and the side sectional view of the assembled state shown in FIG. Each of the horizontal partition plates 2B... Has a structure in which a filter body 10K is fitted and assembled in each of a plurality of insertion chambers 2H (see FIG. 6). That is, as shown in FIG. 6, each fitting chamber 2H has an upper surface and a front surface opened by the above-described vertical partition plate 2A, horizontal partition plate 2B, and support walls 2C and 2C connected to the left and right of the horizontal partition plate 2B. In addition, each filter body 10K fitted and attached to each of the fitting chambers 2H is formed in accordance with the inclination of the horizontal partition plate 2B as shown in FIGS. The air inlet 10A side is slightly inclined upward and the exhaust groove 10B side (exhaust side) is slightly inclined downward.
[0021]
Each of the filter bodies 10K has a substantially box structure in which the bottom side is formed as an inlet 10A and the right front side is formed as an exhaust port 10B. The specific internal structure is shown in FIG. As shown in the plan view, each filter hole 10M is formed by stacking and combining a plurality of self-supporting structure filter units 10S each having a honeycomb shape in cross section. For example, each of these single filters 10S configured using a ceramic material or the like are provided side by side with the interval 10H held by the interval holding rib 10N provided at the root end. As shown in FIG. 8 (a), the lower end 10W of the hole 10M is opened to the inlet 10A side, while the lower end of each circulation interval 10H, the filter holes 10M, and the like. About 10 mm of a filler such as ceramics is embedded in each of the upper end opening portions of the flow interval 10H, and closed, and the front end side of each flow interval 10H is opened to the exhaust port 10B side and overlapped. As shown in FIGS. 8A and 8B, side plates 10X and 10X are attached to both outer side surfaces of the filter unit 10S.
[0022]
From the above configuration, as shown in FIG. 8 (c), the inclusions that flow into the filter holes 10M of each filter unit 10S from the inflow holes 10W that open to the bottom air inlet 10A side of each filter body 10K. The dust airflow is filtered when passing through the filter holes 10M through the flow intervals 10H, and further, the direction is changed by 90 degrees in the filter body 10K, and the filter bodies are passed through the exhaust ports 10B from the flow intervals 10H. It is structured to be discharged out of 10K.
[0023]
In the exploded view shown in FIG. 6 and the cross-sectional view shown in FIG. 7, reference numeral 11 denotes each fitting chamber 2H so as to cover the upper surface and front surface of the filter body 10K fitted in the fitting chamber 2H from above. A bench plate 12, 12 and mounting brackets 18, 18 are provided on the front plate 11T of the cover plate 11, which is a cover plate to be mounted and formed as a whole in a substantially L-shaped cross section. The horizontally long mounting plates 13 and 13 are attached, the filter body 10K is fitted in the fitting chamber 2H, and the cover plate 11 is covered thereon, and the left and right support walls 2C and 2C are covered. Respective tips of bolts 16 and 16 having heads hung on hooks 15 and 15 provided on shelf plates 14 attached to the outer side surfaces are inserted into holes 13A and 13A provided at the tips of the attachment plates 13 and 13, respectively. Insert and tighten with nuts 17 and 17 Furthermore, the filter body 10K is fitted into the fitting chamber by fitting the brackets 18 and 18 attached to the lower side of the front plate 11T to the bolts 21 and 21 provided on the vertical partition plate 2A and tightening them with the nuts 20 and 20. Inside the 2H, the air inlet 10A is configured to be airtightly mounted in a state where the air inlet 10A is aligned with the vent 2D of the horizontal partition plate 2B.
[0024]
Reference numerals 10X ', 10Y, and 19 denote packings that maintain the above airtight state. In FIG. 7, reference numeral 11H denotes a space between the exhaust port 10B of the filter body 10K and the front plate 11T of the cover plate 11. The high-pressure air for dust removal blown into the filter body 10K through the above-mentioned bench-yuri tube 12 in the air chamber formed in the air chamber is compressed in the air chamber 11H, and is then shown in FIG. As shown in FIG. 4, the structure is such that dust attached to each filter unit 10S is blown down by being blown into the flow interval 10H between the filter units 10S in the filter body 10K. .
[0025]
1, 2, 4, and 5, 8 indicates a broach tube that blows high-pressure air for dust removal (dust-removed air) into each of the above-described bench tube 12 during dust removal operation. 4 and FIG. 5, 9 is a header pipe for sending high-pressure air to each broach tube 8, and 9X is a box containing a pilot valve. Further, in FIGS. 1 and 2, 7 is a dust box for storing the dust that has been wiped off, 7X is a cover plate that also serves as a pull-out handle, and 1H is the above-mentioned bench lily tube 12 ... and broach tube 8 The maintenance door attached to the side wall of the dust collector main body 1 close | similar to can be freely opened and closed is shown.
[0026]
In FIG. 2, reference numeral 5 denotes a plurality of rectifying plates mounted in the dust chamber 3, and the dust-containing airflow sucked into the dust chamber 3 is input to the filter units 10 by the rectifying plates 5. Dust that is guided toward the air vent 10A and that is dusted down from the bottom surface of each filter body 10K through the air inlet 10A by the dust removal operation is also guided by these rectifying plates 5. It is structured to be dropped toward the dust box 7. Since each of the filter units 10 is attached obliquely to the intermediate partition wall 2 as shown in the drawing, the dust falling from the inlet 10A by the dust removal operation is formed in a substantially sawtooth cross section. It can be dropped along the inclined surface of the vertical partition plate 2A, so that dust does not fall directly on the filter unit 10 directly below, and reattachment of dust can be prevented.
[0027]
Since the multistage dust collector according to the present invention is configured as described above, when the blower device 6 is operated to exert a suction action on the dust collector body 1, dust-containing airflow generated from an incinerator or the like is The filter body 10K in each filter unit 10 is sucked into the filter body 10K through the dust chamber 3 and filtered by each filter unit 10S..., And the purified air is sucked and discharged to the blower device 6 side through the clean chamber 4. Is done. Each filter unit 10S, which is soiled by dust collection, is wiped off by the high-pressure air blown from the broach tube 8 into the filter body 10K through the bench tube 12, and is collected in the dust box 7. Thus, the dust collection by the individual filter units 10S and the dust removing action of the dust adhering to the individual filter units 10S can be performed efficiently for each of the filter units 10 provided in a multistage manner.
[0028]
【The invention's effect】
Therefore, according to the multistage dust collector according to the present invention, the filter unit provided in the upper and lower multistage system has the advantage that the processing function of the dust-containing airflow (exhaust gas) can be increased without increasing the installation area of the entire apparatus. On the other hand, each filter unit can be installed in the horizontal direction so as to straddle between the dust chamber and the clean chamber, and the entire dust collector is thinned because the whole is inclined at an angle. In addition, since it can be built in a state where its height is kept low, it has the advantage that it can be easily installed even in a factory where there is not much room for height, it has excellent dust collection performance and dust removal performance, and Combined with the point that maintenance of filters and the like can be easily performed, an excellent dust collecting device can be provided.
[Brief description of the drawings]
FIG. 1 is a configuration diagram clearly showing an entire multistage dust collector according to the present invention.
FIG. 2 is a configuration diagram illustrating an internal structure of a dust collector main body.
FIG. 3 is a side view illustrating the configuration of a filter unit.
FIG. 4 is a front view of the dust collector body.
FIG. 5 is a plan view of the dust collector body.
FIG. 6 is an exploded perspective view of the entire filter unit.
FIG. 7 is a cross-sectional view of a main part of the filter unit.
8A is a front view of a filter body, FIG. 8B is a bottom view thereof, and FIG. 8C is a side view thereof.
9A is a plan view illustrating the flow of airflow during the dust collection operation of each filter alone, and FIG. 9B is a plan view illustrating the flow of airflow during the dust removal operation. .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dust collector body 1H Maintenance door 2 Intermediate partition wall 2A Vertical partition plate 2B Horizontal partition plate 2D Vent 3 Dust chamber 4 Clean room 6 Blower device 8 Broach tube 10 Filter unit 10a Air inlet 10K Filter body 10S Filter unit 11H Air chamber 12 Bench Yury Tube

Claims (5)

The inside of the dust collector body is divided into two rooms on the left and right by an intermediate partition wall. One room is a dust chamber with a dust-containing airflow inlet, and the other room is a clean room with a clean air outlet . A dust collector,
The above-described intermediate partition wall is provided with a vertical partition plate that is inclined downward from the upper side toward the dust chamber side, and is provided at a right angle to the lower end portion of the vertical partition plate, and is inclined downward toward the clean chamber side. The horizontal partition plates are alternately and continuously arranged in the vertical direction so that the cross section is substantially serrated, and each horizontal partition plate has a vent opening leading to the dust chamber. over, a plurality of filter units inlet air side of each to face the above-mentioned dust chamber through the vent, and, each of the exhaust side in the vertical multistage in a state of facing to the cleaning chamber A multistage dust collector characterized by being attached.   Multiple filter units are attached to the intermediate partition wall in an inclined state with the inlet side facing diagonally upward and the exhaust side facing diagonally downward, and the bottom surface of the inlet side of each of these filter units 2. The multistage dust collector according to claim 1, wherein a dust inlet is provided with an inlet for dust-containing air flow, and a venturi pipe for blowing dust-removing air is provided on each exhaust side.   The entire bottom surface of each filter unit is the inlet side of the dust-containing airflow at the bottom of the inlet side, and one side of the exhaust side that is 90 degrees different from this inlet port is the outlet for filtered air. The multistage dust collector according to claim 1 or 2, wherein the multistage dust collector is formed in a substantially box shape.   By combining each filter unit with a single self-supporting filter unit with a number of filter holes serving as intake passages in parallel with each other, with a plurality of overlapping air gaps between adjacent ones, The bottom side is formed as a dust-containing air flow inlet opening at the lower end of each of the intake passages, and the one side surface that is 90 degrees different from each of the intake passages is defined as the side of the exhaust passage. It has a substantially box shape with a filtered air opening opening at the tip opening, and an air chamber is provided between the leading exhaust opening of each of the exhaust passages and the lid plate that closes it. The multistage dust collector according to claim 1, 2 or 3, further comprising a venturi tube for dust removal air blowing that also serves as an air circulation tube. To the filter unit, a cover plate provided with a venturi tube for blowing dust removal air that also functions as a flow tube for filtered air is attached in an openable and closable manner, and a maintenance door is attached to the wall of the dust collector main body close to this venturi tube. The multistage dust collector according to claim 1 or 4, wherein the multistage dust collector is provided.

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