KR101225020B1 - Dust collector - Google Patents

Abstract

[PROBLEMS] To provide a dust collecting apparatus capable of suppressing the maximum speed of the flow speed of the dust-containing air in the center portion in the horizontal direction of the rectifying plate when viewed from the front of the rectifying plate.
SOLUTION The duct chamber 100 in which the inlet port 110 of the dust-containing air DA was formed, and the filter chamber 200 in which the filter 210 which filters the dust-containing air DA are arrange | positioned are several, In the dust collector 1 disposed adjacent to each other via a rectifying plate 300 having a through hole 301 formed therein, the dust-containing air DA follows the rectifying plate 300 from the upper side to the lower side in the duct chamber. In the direction, and flows from the duct chamber 100 to the filter chamber 200 through the plurality of through holes 301 and is viewed from the front of the rectifying plate 300 in the horizontal direction of the rectifying plate 300. Uncentered bands 306A and 306B having no through hole 301 are formed along the vertical direction in the center of the vertical direction.

Description

Dust collector {Dust collector}

The present invention relates to a rectifier having a plurality of through holes formed by a vertical duct chamber having a bottom portion having an inlet through which dust-containing air is introduced, and a filter chamber provided with a filter for filtering dust-containing air. Dust collector which is disposed laterally adjacent to each other with a plate interposed therebetween and filters dust-containing air flowing from the duct chamber to the filter chamber through a plurality of through holes by a filter, and discharges clean air obtained by the filtration from inside the filter chamber. It is about.

In such a dust collector, the airflow of the air containing dust is concentrated in a specific location, and the structure for suppressing intensive wear of the filter near a specific location may be employ | adopted. For example, in Patent Document 1, the inlet of the dust-containing air is disposed on the side surface of the duct chamber, and the dust-containing air flows into the duct chamber in the horizontal direction along the rectifying plate interposed between the duct chamber and the filter chamber. Then, the plurality of partition plates are arranged at intervals from each other in a state inclined at a predetermined angle with respect to the flow direction of the dust-containing air, and the airflow of the dust-containing air collides with the partition plate having a plurality of through holes, thereby separating the partition plate. The flow rate distribution of the dust-containing air which flows into the filter chamber is adjusted by classifying a part of the air stream colliding with the air stream toward the filter chamber.

Further, in the dust collector disclosed in Patent Document 1, the aperture ratio is changed by increasing or decreasing the number of through holes per unit area in the upper and lower portions with respect to the rectifying plate interposed between the duct chamber and the filter chamber. The flow rate of the dust-containing air per unit area of the rectifying plate flowing in the inside is aimed at being uniform. Thereby, distribution of the dust load to the filter arrange | positioned in a filter chamber can be made uniform.

Japanese Patent Laid-Open No. 8-215607

In the dust collector disclosed in Patent Document 1, an introduction port is disposed on the side surface of the duct chamber. Thus, in the dust collector of the configuration in which the duct chamber and the filter chamber are arranged laterally adjacent with a rectifying plate interposed therebetween, for example, In some cases, the introduction port may be disposed above the duct chamber so that the dust-containing air flows from the upper portion to the lower portion in the duct chamber. In the dust collector of this configuration, the dust-containing air flowing from the upper part to the lower part of the duct chamber is viewed from the front of the rectifying plate so that the flow velocity of the central portion in the horizontal direction of the rectifying plate is the horizontal direction. It is faster than the flow rate of the other part in the body.

In this case, if the flow rate of the dust-containing air introduced into the duct chamber is increased, the flow rate of the dust-containing air flowing through the plurality of through-holes to the filter chamber is also increased. The dust-containing air having a relatively high flow rate flowing through the center portion in the horizontal direction of the plate directly collides with the filter disposed in the filter chamber at a relatively high speed (maximum speed in the horizontal direction), and wears or breaks the filter. There was a concern.

In addition, since the flow velocity is not uniform at the center part and the other part in the horizontal direction of the rectifying plate, the dust load is varied due to the difference in the arrangement position of the filter in the filter chamber, and the wear of the filter is unevenly distributed. I was letting go. As a result, even when the dust-loading filter can exhibit sufficient dust-collecting ability even if the dust-loading filter is not performed, the operability of the dust collector is deteriorated. .

In the dust collector disclosed in Patent Document 1, although the aperture ratio is increased and decreased by increasing or decreasing the number of through holes per unit area of the rectifying plate, the flow rate of dust-containing air flowing into the filter chamber through these through holes is adjusted. It is difficult to adjust the flow rate of the dust-containing air by increasing or decreasing the number of through holes per area.

As a result, if the flow rate of the dust-containing air introduced into the duct chamber is increased for the purpose of increasing the amount of filtration per unit time, the flow rate of the dust-containing air flowing into the filter chamber also increases, causing the filter to wear and break. This resulted in a disadvantage of shortening the service life of the facility. That is, when the flow rate of the dust-containing air flowing into the filter chamber through the plurality of through-holes increases, the flow rate (maximum speed) of a part of the dust-containing air that collides directly with the filter disposed in the filter chamber is increased. It may become the speed which destroys the filter cloth of a, and there exists a possibility of leading to a damage of a filter.

Therefore, in order to increase the amount of filtration per unit time of the dust collector without shortening the filter life, even if the flow rate of the dust-containing air introduced into the duct chamber is increased, the maximum speed of the flow rate of the dust-containing air flowing into the filter chamber is increased. In addition, it is desired to be able to suppress the wear and damage of the filter to such an extent.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object thereof is to suppress the flow rate of the dust-containing air in the horizontal direction of the rectifying plate as viewed from the front of the rectifying plate, thereby reducing the flow rate in the horizontal direction. An object of the present invention is to provide a dust collector that can be uniformized.

Another object of the present invention is to collect dust that can suppress the maximum speed of the flow rate of the dust-containing air flowing into the filter chamber to the extent that the filter does not wear and break even when the flow rate of the dust-containing air introduced into the duct chamber is increased. The point is to provide a device.

The dust collector according to the present invention for achieving the above object includes a plurality of upper and lower tubular duct chambers having a bottom portion having an introduction port through which dust-containing air is introduced, and a filter chamber in which a filter for filtering the dust-containing air is arranged. The dust-containing air passed through the plurality of through holes from the duct chamber to the filter chamber through the rectifying plate having a through hole formed therebetween is filtered by the filter, and is obtained by filtration. A dust collecting device for discharging clean air from the inside of the filter chamber, wherein the introduction port is disposed above the duct chamber, and the dust-containing air is directed from the upper side to the lower side in the duct chamber along the rectifying plate. While being introduced, it is a configuration that flows laterally from the duct chamber to the filter chamber through the plurality of through holes, As seen from the front side of the said rectifying plate, the non-hole band which does not have the said some through hole is formed in the center part in the horizontal direction of the said rectifying plate along the up-down direction.

According to this characteristic structure, with respect to the flow velocity of the dust containing air which flows through the through-hole of a rectifying plate, the maximum velocity of the flow velocity in a horizontal direction can be suppressed, and the flow velocity can be made uniform. That is, among the dust-containing air flowing from the upper part to the lower part of the duct chamber, the flow rate of the dust-containing air in the center part in the horizontal direction of the rectifying plate is maximum, but from the front of the rectifying plate, In the center part in the center part, since the unbanded band which does not have a plurality of through-holes is formed along the up-down direction, the flow of dust containing air from the duct chamber to the filter chamber is restricted in the center part. Thereby, the maximum speed in the horizontal direction can be suppressed with respect to the flow rate of the dust-containing air, and the flow rate can be made uniform. Therefore, it is possible to prevent damage to the filter and to disperse it without ubiquitous wear, thereby contributing to the improvement of the useful life of the filter, and to keep the filter's dust collection ability efficiently. It contributes to the improvement of the dust collecting capability of the dust collector.

According to another feature configuration of the dust collecting device according to the present invention, the filter is constituted by a plurality of cylindrical filter cloths and is suspended from an upper part to a lower part in the filter chamber, and in the filter chamber, the front of the rectifying plate is provided. In view of the above, there is provided a filter-free arrangement portion in which the plurality of cylindrical filter cloths are not arranged in the central portion of the filter chamber in the horizontal direction.

This characteristic structure is a structure which can be taken about arrangement | positioning of the filter of a filter chamber in order to exhibit the dust collection capability of a filter efficiently. According to this characteristic structure, in the filter chamber, since it comprises the filterless arrangement | positioning part in which the some cylindrical filter cloth is not arrange | positioned in the center part in the horizontal direction of a filter chamber seen from the front of a rectifying plate, a filterless placement part is In the filter chamber, the flow path is the smallest flow resistance. Therefore, the filter non-arrangement part is a space where gas is most likely to flow in the filter chamber, and serves as a flow path for promoting the flow of dust-containing air flowing into the filter chamber from the side of the rectifying plate to the inside. By forming such a flow path in the center of the filter chamber, the diffusion of dust-containing air in the filter chamber can be promoted, and not only the filter close to the rectifying plate but also the entire filter disposed in the filter chamber can be effectively functioned. Thereby, the dust collection capability of a filter can be exhibited efficiently. Moreover, since it can disperse | distribute without ubiquitous abrasion of a filter, it contributes to the improvement of the service life of an installation.

Another characteristic configuration of the dust collecting apparatus according to the present invention is that the introduction port is disposed above the duct chamber so that the dust-containing air is introduced in the direction along the rectifying plate from the upper side to the lower side in the duct chamber. In addition, it is the structure which flows laterally toward the said filter chamber from the said duct chamber through the said some through hole, The opening area of each through hole formed in the lower part of the said rectifying plate among the said some through holes is the upper part of the said rectifying plate. It is at the point formed smaller than the opening area of each through-hole formed in.

According to this characteristic configuration, when the dust-containing air flowing through the lower part in the duct chamber corresponding to the lower part of the rectifying plate flows into the filter chamber through the plurality of through holes, the flow rate of the dust-containing air flowing into the filter chamber is Since the maximum speed can be suppressed, wear and breakage of the filter can be prevented even when the flow rate of the dust-containing air introduced into the duct chamber is increased to increase the filtration amount per unit time of the dust collector.

To add explanation, the dust-containing air is introduced from the inlet formed in the upper side of the duct chamber from the upper side to the lower side in the duct chamber along the rectifying plate, and a part of the plurality of through holes formed in the rectifying plate. With the flow into the filter chamber through the ball, the other part collides with the bottom wall of the duct chamber, changes the flow direction, and then flows into the filter chamber through the plurality of through holes. Here, the flow rate of the dust-containing air flowing in the direction (side) from the duct chamber to the filter chamber through the plurality of through holes formed in the rectifying plate collides with the lower part of the duct chamber, and then passes through the filter through the through hole. The speed of the dust-containing air flowing into the chamber is the maximum.

Therefore, the opening area of each through hole formed in the lower part of the rectifying plate corresponding to the lower part of the duct chamber is formed smaller than the opening area of each through hole formed in the upper part of the rectifying plate corresponding to the upper part of the duct chamber, It suppresses the flow rate of the dust-containing air flowing through each through hole formed in the lower portion of the.

That is, when each through hole formed in the upper part of the rectifying plate and each through hole formed in the lower part have the same opening area, the flow rate of the dust-containing air flowing into the filter chamber from each of the lower through holes increases, but the respective through holes in the upper part By forming the opening area of the larger than the opening area of each of the lower through holes, the flow path resistance in each of the upper through holes is lowered relative to each of the lower through holes. As a result, the flow rate of the dust-containing air from the respective through holes in the upper portion to the filter chamber is relatively increased, and the flow rate of the dust-containing air from the respective through holes in the lower portion to the filter chamber is relatively reduced. As a result, the flow rate of the dust-containing air flowing through each through hole formed in the lower part of the rectifying plate can be suppressed. Further, the maximum speed of the dust-containing air flowing into the filter chamber through each of the through holes in the lower part of the rectifying plate can be suppressed.

Therefore, even when the flow rate of the dust-containing air introduced into the duct chamber is increased and the amount of filtration per unit time of the dust collector is increased, the maximum velocity of the flow rate of the dust-containing air flowing into the filter chamber is restrained, so that the filter wears out. Prevents breakage and extends filter life.

Another characteristic configuration of the dust collector according to the present invention is that the duct chamber is provided with a tapered portion having an end tapered toward the filter chamber side from the upper side to the lower side.

According to this characteristic configuration, since the duct chamber is formed with a tapered portion whose end is tapered toward the filter chamber side from the upper side to the lower side, the lower portion of the duct chamber as compared with the case where the tapered portion is not provided. In this case, it is possible to satisfactorily create a flow of dust-containing air from the duct chamber to the filter chamber. As a result, the flow of dust-containing air in the direction from the duct chamber to the filter chamber can be smoothed, thereby increasing the filtration throughput per unit time. Here, the increase in the flow rate of the dust-containing air in the direction from the duct chamber to the filter chamber may involve wear and breakage of the filter, but as described above, the flow rate (maximum speed) of the lower portion of the duct chamber is suppressed. As a result, the wear and damage of the filter due to the increase in the flow rate of the dust-containing air can be suppressed.

Moreover, the dust of the bottom part of a duct chamber is discharged to a filter chamber by the airflow of the dust containing air which flows along a tapered part, and dust can be prevented from accumulating on the bottom part of a duct chamber.

Another characteristic structure of the dust collector which concerns on this invention is equipped with the discharge port which discharge | releases the said clean air in the said filter chamber in the upper part of the said filter chamber, The said filter is comprised by the some cylindrical filter cloth, It is arranged to hang from the upper part to the lower part in the filter chamber, and the clean air obtained by the said filtration flows in the said cylindrical filter cloth from the lower part to the upper part, and is discharged | emitted from the said filter chamber through the said discharge port.

According to this characteristic configuration, since the dust-containing air which has flowed from the upper part to the lower part in the duct chamber flows from the lower part to the upper part which is opposite to the air flow in the duct chamber, the equipment is no longer needed. The passage length of the dust-containing air in the filter chamber can be secured without expanding in the lateral direction. Thereby, a dust collector with high dust collection capability while having a compact shape can be obtained.

In particular, when the duct chamber and the filter chamber are formed in a vertically long cylindrical shape in the vertical direction, the longest flow path length can be efficiently obtained in a limited facility space.

According to still another feature of the dust collector according to the present invention, the rectifying plate is constituted by a plurality of rectifying plates arranged in parallel at intervals, and the uncirculated band formed on the rectifying plate closer to the filter chamber includes the duct. It is in that it is formed in a wider width than the non-unilated band formed in the said rectifying plate near a seal | sticker.

This characteristic structure is a structure which can be taken with respect to a rectifying plate in order to exhibit the dust collection capability of a filter efficiently. According to this characteristic configuration, the dust-containing air needs to pass through the through holes of the plurality of rectifying plates when flowing from the duct chamber to the filter chamber. Thereby, the flow rate of the air containing dust from the duct chamber to the filter chamber can be further suppressed.

In addition, since the uncoated band of the rectifying plate near the filter chamber is formed in a wider width than the uncoated band of the rectifying plate near the duct chamber, in the flow of dust-containing air from the duct chamber to the filter chamber, By restricting the flow of the central portion in the horizontal direction of the rectifying plate at which the flow rate is maximum, the flow rate in the horizontal direction of the rectifying plate can be equalized. As a result, since the filter can be dispersed without ubiquitous, the dust collecting capability of the filter can be efficiently exhibited efficiently, contributing to the improvement of the dust collecting capability of the dust collector. It also contributes to the improvement of the service life of the installation.

Another characteristic structure of the dust collector which concerns on this invention is that the said some through-hole formed in the one side of the adjacent rectification plate is seen from the front of the said several rectification plate, and is in the other side of the adjacent rectification plate. It exists in the point which is arrange | positioned at the position which does not overlap with the said some through hole formed.

According to this characteristic structure, since the some through-hole formed in the one side of the adjacent rectification plate is arrange | positioned in the position which does not overlap with the some through-hole formed in the other of the adjacent rectification plate from the front of a some rectification plate, dust containing air Cannot go through the through holes of the plurality of rectifying plates only by going straight in the direction seen from the front of the plurality of rectifying plates. That is, when the dust-containing air flows from the duct chamber to the filter chamber, a collision with the rectifying plate and a bypass (bending) along the rectifying plate tend to occur.

Therefore, when the dust-containing air flows from the duct chamber to the filter chamber, the longer flow path length is required due to the bending caused by the collision with the rectifying plate, so that the flow rate is further reduced. The dust capture rate can be improved. As a result, wear and breakage of the filter in the filter chamber can be suppressed, contributing to the improvement of the service life of the facility.

1 is a schematic configuration diagram of a dust collector according to a first embodiment.
FIG. 2 is a view seen from the front of the rectifying plate of the dust collecting device according to the first embodiment. FIG.
3 is an enlarged view for explaining an arrangement of a rectifying plate of the dust collector according to the first embodiment.

[First Embodiment]

A first embodiment of the dust collector according to the present invention will be described with reference to Figs.

1 is a schematic configuration diagram of a dust collecting apparatus, (a) is a longitudinal cross-sectional view taken along arrow Ia-Ia of (c), (b) is a cross-sectional view taken along arrow Ib-Ib of (c), (c) Is a front view of the dust collector.

As shown in FIG. 1, the body 1 of the dust collector is formed in the shape of a substantially rectangular rectangle as viewed in a cross section, and is formed in the shape of a cylinder having an approximate bottom as viewed from the front, and the lower portion thereof is a hopper having a substantially rectangular pyramidal shape ( 500). In addition, inside the body 1, the duct chamber 100 having the inlet 110 for introducing the dust-containing air DA on the upper side thereof, and the dust-containing air DA are filtered to clean the air CA. The filter chamber 200 in which the plurality of filters 210 are arranged is made into a rectifying plate 300 (filter chamber side rectifying plate 300A, duct chamber side rectifying) made of two punched metals having a plurality of through holes 301 formed therein. The board | substrate 300B) is arrange | positioned adjacently and is comprised by the state interposed.

Based on the above configuration, the dust collector according to the present embodiment introduces the dust-containing air DA into the duct chamber 100 as a downward flow from the inlet port 110 to the upper portion of the duct chamber 100. The dust-containing air DA introduced into the duct chamber 100 is mainly flowed from the duct chamber 100 to the filter chamber 200 through the through hole 301 formed in the rectifying plate 300 to filter 210. ), And the clean air CA obtained by the filtration flows to the clean room 400 provided in the upper part of the filter room 200 as an upward flow from the lower part to the upper part in the filter 210, By discharging from the discharge port 410 which 400 has, the filtration process is performed.

Hereinafter, the configuration will be described in the order of the flow of the dust-containing air DA, in the order of the duct chamber 100, the rectifying plate 300, and the filter chamber 200.

[Duct room]

As shown in Fig. 1 (a), the duct chamber 100 is formed by dividing the inside of the body 1 of the dust collector by the rectifying plate 300 as a side wall adjacent to the filter chamber 200 side. , It is formed as a cylindrical space having a bottom extending vertically in the vertical direction. In addition, an inlet port 110 for introducing dust-containing air DA into the duct chamber 100 is disposed above the duct chamber 100.

Further, a lower portion of the duct chamber 100 is provided with an inclined surface portion 101 (tapered portion) in which the tip is tapered toward the filter chamber 200 side from the top to the bottom (FIG. 1 (a)). The duct chamber 100 and the filter chamber 200 are connected to each other so that the dust-containing air DA flows from the tapered portion 102 of the inclined surface portion 101 to the filter chamber 200.

In this way, the duct chamber 100 is provided with the inclined surface portion 101 at the lower portion, thereby causing the airflow of the dust-containing air DA flowing along the inclined surface portion 101. And the dust of the bottom part of the duct chamber 100 is discharged to the filter chamber 200 (hopper 500) through the taper part 102 by the airflow, and dust accumulates in the bottom part of the duct chamber 100. It is preventing it from becoming.

[Commutation board]

As shown in Fig. 1 (a), in the present embodiment, as the rectifying plate 300, two sheets of flat plate-like rectifying plates made of the punching metal shown in Figs. 2 (a) and (b) (filter room side rectifying plate ( 300A) and the duct chamber side rectifying plate 300B) are arrange | positioned in parallel between the duct chamber 100 and the filter chamber 200 at intervals. The rectifying plate 300 is formed in a plate shape and is configured in a rectangular shape that is vertically long in the vertical direction. In addition, the rectifying plate 300 is disposed such that its planar portion follows the flow direction of the dust-containing air DA flowing in the duct chamber 100 in the direction from the top to the bottom. 2 (a) is a front view of the filter chamber side rectifying plate 300A, and FIG. 2 (b) is a duct room side rectifying plate 300B. 3 (a) is an enlarged front view of the rectifying plate 300 formed by arranging two rectifying plates 300A and 300B in parallel, as viewed from the duct room side rectifying plate 300B side, and FIG. , longitudinal cross-sectional view along arrow IIIb-IIIb of (a).

In the filter chamber side rectifying plate 300A, a plurality of through holes 301A are formed in a circular shape at a predetermined pitch described later in the horizontal direction and the vertical direction of the rectifying plate. Similarly, the duct room side rectifying plate 300B is circular. Thus, a plurality of through holes 301B are formed at predetermined pitches described later in the horizontal direction and the vertical direction of the rectifying plate. Through these through holes 301A and 301B, the dust-containing air DA flows from the duct chamber 100 to the filter chamber 200. The opening area of each of the lower through holes 301Ab and 301Bb formed under the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B among the plurality of through holes 301A and 301B is the filter chamber side rectifying plate. 300A and smaller than the opening area of each upper through hole 301Aa, 301Ba formed in the upper part of the duct room side rectifying plate 300B.

For example, in FIGS. 2A and 2B, the upper through holes 301Aa and 301 Ba formed in the upper 41 rows are formed in a circular shape with a hole diameter of 70 mm, and the lower through holes 301Ab and 301Bb formed in the lower 20 rows. Silver is formed in a circular shape with a hole diameter of 60 mm.

Thus, by forming the opening area of each lower through hole 301Ab, 301Bb smaller than the opening area of each upper through hole 301Aa, 301Ba, in each lower through hole 301Ab, 301Bb, each upper through hole ( Compared with 301Aa and 301Ba, the rate of suppression of the flow rate of the dust-containing air DA flowing into the filter chamber 200 can be increased.

However, as shown in Fig. 1 (a), the lower through holes 301Ab and 301Bb having a small opening area have a duct from the same height as that of the inclined surface portion 101 of the duct chamber 100 in the vertical direction. It is suitable to form toward the bottom of the chamber 100. This is because the dust-containing air DA introduced in the direction along the duct chamber side rectifying plate 300B from the inlet port 110 disposed above the duct chamber 100 from the upper side to the lower side in the duct chamber 100, In particular, by colliding with the inclined surface portion 101 of the duct chamber 100, the flow direction smoothly changes in the filter chamber 200 direction. Therefore, the flow rate component toward the filter chamber 200 direction of the dust-containing air DA increases in the lower portion of the duct chamber 100 from the same level as that of the inclined surface portion 101 in particular. This is because disposing the lower through holes 301Ab and 301Bb having a small opening area at a position corresponding thereto is particularly effective in suppressing the flow velocity of the dust-containing air DA in the direction of the filter chamber 200.

In addition, the plurality of through holes 301A in the horizontal direction of the filter chamber side rectifying plate 300A include a pitch (center pitch) 302A of a central portion formed at a constant pitch, and the other portion formed at a constant pitch. It is arrange | positioned so that the pitch 303A of the back part may be provided, and it is comprised so that the pitch (center pitch) 302A of the center part may become wider than the pitch 303A of the other part. Thereby, between the adjacent through-holes 301A arrange | positioned by the pitch 302A of a center part, the non-hole part band 306A which does not have the through-hole 301A is formed along the up-down direction, In other parts other than the study band 306A, the perforation part band 307A by which the through-hole 301A is arrange | positioned by pitch 303A is formed along a vertical direction. Similarly, the plurality of through holes 301B in the horizontal direction of the duct chamber side rectifying plate 300B includes a pitch (center pitch) 302B of the center portion formed at a constant pitch and a pitch 303B of the other portion formed at a constant pitch. It is arrange | positioned so that it may be provided, and it is comprised so that the pitch (center pitch) 302B of the center part may become wider than the pitch 303B of the other part. Thereby, between the adjacent through-holes 301B arranged at the pitch 302B of the center part, the non-coated band 306B which does not have the through-hole 301B is formed along the up-down direction, and the non-coated band 306B is carried out. In the other part, the perforation part band 307B by which the through-hole 301B is arrange | positioned by pitch 303B is formed along a vertical direction. However, the pitch means the distance between the centers in the horizontal direction or the vertical direction of the adjacent through holes 301A or the adjacent through holes 301B.

For example, in FIGS. 2A and 2B, the center pitches 302A and 302B are 250 mm and 150 mm, and the pitches 303A and 303B of the other parts are 100 mm, respectively, and the upper and lower portions of the rectifying plates 300A and 300B are respectively. Irrespective of, it is formed in a constant pitch.

In addition, the pitches 304A and 304B in the vertical direction are formed to be constant at 100 mm regardless of the positions of the upper, lower, and horizontal directions of the rectifying plates 300A and 300B.

The uncoated bands 306A and 306B and the non-perforated bands 307A and 307B formed by the above are respectively formed in a long band shape in the vertical direction of the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B. It becomes.

Thus, by forming the center pitches 302A, 302B in the horizontal center in a width wider than the pitches 303A, 303B of the other parts, the uncoated bands 306A, 306B having no through holes 301A, 301B. Is formed along the up and down direction, and the flow of the dust-containing air DA in the central portion of the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B is restricted by the non-unlimited bands 306A and 306B. With respect to the flow velocity of the dust-containing air DA flowing through the through holes 301A and 301B, the maximum velocity of the flow velocity in the horizontal direction can be suppressed and uniformity can be achieved.

In addition, the center pitch 302A of the filter chamber side rectifying plate 300A has a wider width than the center pitch 302B of the duct chamber side rectifying plate 300B. 306B) in a wider width. As a result, the flow of the central portion in the horizontal direction in the filter chamber 200 at which the flow rate is the fastest with respect to the flow of the dust-containing air DA flowing from the duct chamber 100 side to the filter chamber 200 side is more reliably restricted. can do. Therefore, it becomes possible to suppress the maximum speed of the flow rate of the airflow of the dust containing air DA which goes from the duct chamber 100 side to the filter chamber 200 side.

Next, the arrangement relationship in the case of arranging two filter chamber side rectifying plates 300A and the duct chamber side rectifying plates 300B in parallel will be described.

As shown in Fig. 3 (a), when the two filter chamber side rectifying plates 300A and the duct chamber side rectifying plates 300B are arranged in parallel, the filter chamber side rectifying plates 300A and the duct chamber side rectifying plates 300B are disposed. Viewed from the front, it is comprised so that the some through hole 301A formed in 300 A of filter chamber side rectifying plates may be arrange | positioned in the position which does not overlap with the some through hole 301B formed in the duct room side rectifying plate 300B.

As shown in FIG.3 (b), when the dust containing air DA flows from the duct chamber 100 to the filter chamber 200, the through-hole 301A of the filter chamber side rectifying plate 300A, and the duct chamber side It is necessary to pass through the through hole 301B of the rectifying plate 300B, and the dust-containing air DA is only going straight in the direction seen from the front of the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B. It cannot pass through the through hole 301A and the through hole 301B. That is, when the dust-containing air DA flows from the duct chamber 100 to the filter chamber 200, the collision with the filter chamber side rectifying plate 300A and the bypass (bending) along the filter chamber side rectifying plate 300A It becomes easy to occur. Accordingly, in the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B, it is possible to further reduce the flow rate and to improve the dust capture rate. Thereby, abrasion and damage of the filter 210 of the filter chamber 200 can be suppressed, and the service life of an installation can be improved.

In addition, adjustment of the length of the metal part 305A, 305B which does not have the lowest through hole of 300 A of filter room side rectification plates, and duct room side rectification board 300B in FIG.2 (a), (b), The body 1 (taper) of the dust collector is adjusted by adjusting the shape and size of the guide 310 which extends along the inner wall of the tapered portion 102 downward from the lower end of the filter chamber side rectifying plate 300A. The shape and size of the gap formed between the portion 102, the lower end of the duct chamber side rectifying plate 300B, and the lower end of the guide 310 can be adjusted. Thereby, the flow rate of the dust containing air DA which flows in the hopper 500 connected to the lower part of the filter chamber 200 can be suppressed.

[Filter room]

As shown in FIG. 1A, the filter chamber 200 is formed by dividing the inside of the body 1 of the dust collector by the rectifying plate 300 as a side wall adjacent to the duct chamber 100 side. , It is formed as a cylindrical space having a bottom extending vertically in the vertical direction. However, the filter chamber 200 shares the duct chamber 100 and the body 1 of the dust collector. The duct chamber 100 and the filter chamber 200 mainly contain the dust-containing air DA through the through holes 301A and 301B formed in the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B. It is formed to allow flow through. In addition, the guide 310 which extends and connects along the inner wall of the tapered part 102 downward from the lower end of the filter chamber side rectifying plate 300A, and the tapered part 102 of the inclined surface-shaped part 101 of the duct chamber 100 is connected. ) And a lower end of the duct chamber side rectifying plate 300B so as to flow therethrough.

As shown in FIGS. 1A and 1B, in the filter chamber 200, a plurality of filters 210 for filtering the dust-containing air DA are moved from the upper side to the lower side in the filter chamber 200. It is arranged to hang toward. The filter 210 collects predetermined dust according to the purpose of dust collection on a support (not shown) formed in a cylindrical basket shape through which air can flow, which is obtained by welding a straight bar-shaped support bar and a circular support ring in plan view. It is constructed by covering a filter cloth (not shown) with the capability.

In addition, as shown in FIG. 1 (a), the filter 210 is connected to the filter chamber 200 from the ceiling portion 201 through the hanging hole 202 opened in the ceiling portion 201 of the filter chamber 200. ) Is longer than the upper end and lower end of the filter chamber side rectifying plate 300A in the up and down direction, and shorter than the lower end of the guide 310, and is provided with a filter cloth and suspended. As a result, the dust-containing air DA, which is guided by the guide 310 from the tapered portion 102 of the inclined surface portion 101 and flows into the hopper 500 of the filter chamber 200, is the lower end of the filter 210. Has a structure that is not directly injected.

In addition, as shown in FIG. 1 (b), the filter 210 has a pitch (for example, 330 mm) at the center of the filter chamber 200 in the horizontal direction when viewed from the front of the rectifying plate 300. It is arrange | positioned in the state formed in width larger than pitch (for example, 180 mm).

That is, the filter free arrangement part 220 in which the filter 210 is not arrange | positioned in the horizontal center part of the filter chamber 200 from the front of the rectifying plate 300 in the filter chamber 200 is shown. Is formed, and the filter arrangement part 230 in which the filter 210 is arrange | positioned at the pitch of the other part is formed in other parts other than the filterless arrangement part 220. As shown in FIG. In this way, a dust-free air DA is formed by forming an area in which no filter is disposed in the center (a band-shaped area along the up-down direction when viewed from the front of the rectifying plate 300) and forming the central part more easily than other parts. Flow can be promoted to the inside of the filter chamber 200.

However, the region 306A of the filter chamber side rectifying plate 300A and the region in which the filter 210 in the filter chamber is not disposed (the filter non-positioning unit 220) are viewed from the front of the rectifying plate 300. It is arrange | positioned so that it may overlap in substantially the same extent in a direction and a horizontal direction.

In the upper part of the filter chamber 200, the clean room 400 is formed using the ceiling part 201 as a partition wall. Further, a discharge port 410 is formed on the side surface of the clean room 400 to discharge clean air CA obtained by filtration out of the body 1 of the dust collector. In addition, the upper direction of the filter chamber 200 (the clean chamber 400) is closed. In addition, a hopper 500 is connected to the bottom of the filter chamber 200 so that the dust removed from the filter 210 can be deposited. However, although not shown, a discharge valve capable of discharging the accumulated dust is disposed below the hopper 500.

[Filtration treatment]

Next, the filtration process by operation | movement of the dust collector comprised as mentioned above is demonstrated. First, the dust-containing air DA to be filtered is introduced from the upper portion to the lower portion in the duct chamber 100 through the introduction port 110 in the direction along the duct chamber side rectifying plate 300B.

The dust-containing air DA introduced into the duct chamber 100 from the inlet 110 has a large velocity component from the upper side to the lower side in the duct chamber 100, and most of the dust-containing air DA is the duct chamber. Although it flows toward the lower direction of (100), a part flows toward the filter chamber 200 from the duct chamber 100 by the suction action | action from the adjacent filter chamber 200, and passes. The air flow directed from the duct chamber 100 to the filter chamber 200 is formed through the upper portions of the upper portion of the duct chamber side rectifying plate 300B and the filter chamber side rectifying plate 300A forming the sidewalls of the duct chamber 100. It flows into the filter chamber 200 through the ball 301Ba, 301Aa. At this time, among the dust-containing air DA flowing from the top to the bottom of the duct chamber 100, the dust-containing air DA in the center portion in the horizontal direction of the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B. ), The maximum flow rate, but since the uncoated band 306A and the uncoiled band 306B are formed in the horizontal center of the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B, In the central portion, the flow of dust-containing air DA from the duct chamber 100 to the filter chamber 200 is restricted.

In addition, each of the upper through holes 301Ba and 301Aa has a larger opening area than the lower through holes 301Bb and 301Ab formed below the rectifying plates 300B and 300A, so that the flow rate is not suppressed relatively. It flows toward the filter chamber 200 and passes.

On the other hand, most of the airflow of the dust-containing air DA introduced into the duct chamber 100 from the inlet port 110 flows toward the lower direction of the duct chamber 100, and the inclined surface portion formed in the lower portion of the duct chamber 100. Since the flow direction smoothly changes in the filter chamber 200 direction by colliding with 101, the flow velocity of the dust-containing air DA flowing laterally from the duct chamber 100 toward the filter chamber 200 is increased. It becomes the maximum speed in the part corresponding to the lower part of (100).

The airflow of the dust-containing air DA flowing laterally from the lower portion of the duct chamber 100 toward the filter chamber 200 at the maximum speed forms the side wall of the lower portion of the duct chamber 100. The flow rate is suppressed by each of the lower through holes 301Bb and 301Ab having a small opening area formed below the rectifying plate 300B and the filter chamber side rectifying plate 300A, and then flows into the filter chamber 200.

As described above, according to the dust collector of the present embodiment, the airflow of the dust-containing air DA in the portion corresponding to the lower portion of the duct chamber 100 causing the maximum speed, which causes the wear and damage of the filter. The flow rate is suppressed, and then flows from the duct chamber 100 to the filter chamber 200 through the through holes 301A and 301B of the filter chamber side rectifying plate 300A and the duct chamber side rectifying plate 300B. Therefore, the maximum speed of the flow rate of the dust-containing air DA flowing into the filter chamber 200 can be suppressed to prevent wear and breakage of the filter 210, thereby extending the life of the filter.

Next, the dust-containing air DA that flows into the filter chamber 200 passes through the filter 210 formed of a plurality of cylindrical filter cloths suspended from the upper side to the lower side in the filter chamber 200. Filtered by).

That is, the dust-containing air DA in the filter chamber 200 is sucked into the filter 210 by the suction action of a blower (not shown) disposed downstream of the filter chamber 200. The dust-containing air DA is filtered by passing through the filter cloth at the time of suction into the filter 210 and becomes the clean air CA in the filter 210. The clean air CA in the filter 210 obtained by the filtration flows upward into the filter 210 formed in a cylindrical shape, is discharged from the hanging hole 202 to the clean room 400, and discharge port 410. It is discharged from the inside of the clean room 400 through.

By the above filtration process, the dust-containing air DA introduced into the dust collector from the inlet port 110 becomes clean air CA obtained by filtration and is discharged out of the dust collector from the outlet port 410.

Therefore, the flow rate of the dust-containing air DA flowing into the filter chamber 200 while increasing the flow rate of the dust-containing air DA introduced into the duct chamber 100 to increase the amount of filtration per unit time of the dust collector. The maximum speed of the speed (including the maximum speed in the horizontal direction) can be suppressed to prevent wear and breakage of the filter 210, thereby extending the life of the filter.

[Dust removal processing]

However, the dust adhered to the filter cloth of the filter 210 by the above filtration treatment is provided by compressed air ejection means (not shown) capable of ejecting compressed air from the upper portion of each filter 210 in the clean room 400. The dust is removed from the filter 210 by performing a dust removing process of blowing compressed air into the filter 210 from the clean chamber 400 side at an appropriate timing, and is deposited on the hopper 500 at the bottom of the filter chamber 200. . By this dust removal process, the filter 210 can be repeatedly used.

Second Embodiment

In the dust collector according to the second embodiment, in the first embodiment, the rectifying plate 300 composed of the two rectifying plates 300A and 300B is constituted by any one sheet.

According to this embodiment, compared with the first embodiment, the suppression force of the flow rate of the dust-containing air DA from the duct chamber 100 to the filter chamber 200 is reduced, but the rectifying plate ( The maximum speed in the horizontal direction of 300 and the maximum speed of the flow rate flowing to the filter chamber 200 through the lower through holes 301Ab from the lower portion of the duct chamber 100 can be suppressed to some extent. In addition, maintenance such as arrangement of the rectifying plate 300 is facilitated, and pressure loss of the dust-containing air DA when flowing from the duct chamber 100 to the filter chamber 200 is also reduced. Therefore, the present embodiment can reduce the flow rate (maximum speed) of the dust-containing air DA flowing from the duct chamber 100 to the filter chamber 200 to an acceptable range. By adopting the form, it is possible to improve the water retention and to lower the pressure loss.

[Third embodiment]

The dust collector according to the third embodiment is a rectifying plate in which through holes are formed in the upper and lower portions of the rectifying plate 300 with the same hole diameter instead of the filter chamber side rectifying plate 300A according to the second embodiment (not shown). Not). According to this embodiment, although the suppression force of the maximum speed of the flow rate of the dust containing air DA which flows from the lower part of the duct chamber 100 to the filter chamber 200 becomes small, since the rectifying plate 300 becomes a simple structure, The dust collector 1 can be configured at low cost.

[Other Embodiments]

(1) Although the shape of the through-hole formed in the rectifying plate is circular in the said embodiment, the shape of the through-hole may be another shape, such as square, a rectangle, an ellipse, for example.

(2) In the above embodiment, each of the through holes at the top and the bottom of the rectifying plate is circular having a hole diameter of 70 mm and 60 mm, and the opening areas are different from each other by two types. If it is smaller than the opening area of each through hole of this upper part, the specific numerical value of a hole diameter can be changed suitably. Moreover, you may change each opening area into three or more types, and may form each through hole so that opening area may become small from the upper part of a rectifying plate to a lower part.

(3) In the above embodiment, the through-holes formed in each of the two rectifying plates are arranged in parallel so as to be in a position not overlapped when viewed from the front of the rectifying plate, but the dust-containing air is blown directly to the filter in the filter chamber to some extent. In this case, in order to change the dust trapping rate, the degree of pressure loss, and the degree of suppression of the flow rate, the two rectifying plates may be arranged in parallel so that some or all of the through holes are overlapped in the plane of the rectifying plate. . Similarly, three or more rectifying plates may be arranged in parallel instead of two.

(4) In the above embodiment, the center pitch (each pitch is constant) is formed to be wider than the pitch of the other part (each pitch is constant), thereby forming an unwelded band and a hole band in the rectifying plate, The perforated part band may be formed without making the pitch of the through-hole formed in the pitch (pitch of the other part) constant.

In addition, although the pitch in the horizontal direction of the through-hole formed in the rectifying plate was made into two types of pitches of a center pitch and another part like FIG. 2, it was illustrated that the pitch in the horizontal direction is three types or more, Further uniformization of the wind speed in the gas may be achieved.

In addition, although each of the two rectifying plates was formed so as to form an uncoated band and a non-perforated band, you may comprise so that an uncoated band may be formed only in either one.

(5) In the above embodiment, the pitch in the vertical direction of the through hole formed in the rectifying plate is formed to be constant regardless of the upper and lower portions of the rectifying plate as shown in FIG. In the lower part, the suppressing performance of the flow rate of the dust-containing air may be adjusted by forming larger than the upper part.

(6) Although the cylindrical embodiment was illustrated as said filter, the shape of a filter is not limited to a cylindrical shape, For example, you may be comprised by polygonal cylindrical shape, elliptical shape, etc. whose cross section is triangular or more. Moreover, the cross-sectional shape in which the inner angle of one or more corner | angular parts becomes 180 degree or more, for example, a star shape or the shape provided with many wrinkle parts may be sufficient.

(7) Although the above embodiment exemplifies a filter provided by covering the filter cloth longer than the upper end and the lower end of the filter chamber side rectifying plate in the vertical direction, the length of the filter cloth is not limited to this, for example, the upper or lower end of the filter chamber side rectifying plate. The filter may be shorter than at least one of them, and may be provided.

(8) In the above embodiment, the configuration in which the filter is suspended from the top to the bottom in the filter chamber is exemplified. However, the arrangement of the filter is not limited to hanging, but may be a configuration capable of arranging the filter in the filter chamber. For example, the filter may be attached to a mounting plate that can be fixed to the side wall of the filter chamber and disposed in the filter chamber.

(9) Although the above embodiment exemplifies a configuration in which the pitch of the central portion in the horizontal direction is formed to be wider than the pitch of the other portion with respect to the filter disposed in the filter chamber from the front of the rectifying plate of the filter chamber. The pitch of the central part in the horizontal direction may be formed to have the same width as the pitch of the other part as seen from the front side of the rectifying plate of. That is, you may arrange | position a filter, without forming the area | region (filterless placement part) in which a filter is not arrange | positioned in a filter chamber. According to the structure, since the volume ratio of the filter arrange | positioned in a filter chamber increases, the collection amount per unit volume of a filter chamber can be improved.

The present invention can be usefully used as a dust collector which can suppress the maximum speed of the flow velocity of the dust-containing air in the center portion in the horizontal direction of the rectifying plate as viewed from the front of the rectifying plate and make it possible to equalize the horizontal flow rate. Can be.

In addition, the present invention provides a dust collecting apparatus capable of suppressing the maximum speed of the flow rate of the dust-containing air flowing into the filter chamber to the extent that the filter does not wear and break even when the flow rate of the dust-containing air introduced into the duct chamber is increased. It can be usefully used as.

100 duct room
110 inlet
200 filter chamber
210 filter
220 filterless part
300 rectification plate
300A filter room side rectifier plate
300B duct room side rectifier plate
301 through hole
302A, 302B Center Pitch (Center Pitch)
303A, 303B pitch (pitch of other parts)
306A, 306B Unstudyed Band
410 outlet
CA Clean Air
DA dust-containing air

Claims (7)

The upper and lower cylindrical duct chambers having a bottom portion having an inlet through which dust-containing air is introduced, and a filter chamber in which the filter for filtering the dust-containing air are arranged are provided with a rectifying plate having a plurality of through holes. Placed laterally adjacent,
A dust collecting device for filtering the dust-containing air flowing through the plurality of through holes from the duct chamber to the filter chamber by the filter and discharging clean air obtained by filtration from the inside of the filter chamber.
The introduction port is disposed above the duct chamber so that the dust-containing air is introduced from the upper side to the lower side in the duct chamber in the direction along the rectifying plate and in the duct chamber through the plurality of through holes. It is a structure which flows to a side toward the said filter chamber,
A dust collecting device, in which a non-hole band not having the plurality of through holes is formed along the vertical direction in a central portion in the horizontal direction of the rectifying plate as viewed from the front of the rectifying plate. The method according to claim 1,
The filter is constituted by a plurality of cylindrical filter cloths, and is disposed to hang from the top to the bottom in the filter chamber,
A dust collector in the filter chamber, comprising a filter non-arrangement unit in which the plurality of cylindrical filter cloths are not arranged in a central portion in the horizontal direction of the filter chamber when viewed from the front of the rectifying plate. The method according to claim 1,
A dust collecting apparatus, wherein, among the plurality of through holes, an opening area of each of the through holes formed in the lower portion of the rectifying plate is smaller than an opening area of each of the through holes formed in the upper portion of the rectifying plate. The method according to claim 3,
And said duct chamber is provided with a tapered portion having a tapered end toward the filter chamber side from the upper side to the lower side. The method according to claim 3,
An outlet for discharging the clean air in the filter chamber, above the filter chamber;
The filter is constituted by a plurality of cylindrical filter cloths, and is suspended from the top to the bottom in the filter chamber,
The dust-collecting apparatus which clean air obtained by the said filtration flows in the said cylindrical filter cloth from the lower part to the upper part, and is discharged | emitted from the said filter chamber through the said discharge port. The method according to any one of claims 1 to 5,
The rectifying plate is composed of a plurality of rectifying plates arranged in parallel at intervals,
A dust collecting device, wherein the uncoated band formed on the rectifying plate on the side close to the filter chamber is formed to have a wider width than the uncoated band formed on the rectifying plate on the side near the duct chamber. The method of claim 6,
A dust collecting device, wherein the plurality of through holes formed on one side of the neighboring rectifying plate are disposed at a position not overlapping with the plurality of through holes formed on the other side of the neighboring rectifying plate when viewed from the front of the plurality of rectifying plates.

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