JP2005169173A5 - - Google Patents

Description

Bag filter device

The present invention related to the bag filter apparatus for filtering and collecting dust (dust-Powder) from the dust-containing gas stream, in particular, relates to a bag filter device shake off dust from the filter bug without parked airflow.

As shown in Japanese Utility Model Publication No. 2-43460 (Patent Document 1) , the conventional one applies a dust-containing air flow introduced from the front entrance of the bag housing to a baffle plate (impact plate), and relatively large coarse particles are Along with the descending airflow, the baffle plate is placed under the hopper inlet and passes through the through hole of the recovery plate and falls to the hopper. -Ascending air flow was introduced as a down flow from the upper part of the filtration chamber into the filtration chamber where many filter bugs were placed. The dust collected on the surface of the filter bag was removed by backwashing with compressed air, and it was dropped and collected by the hopper on the downflow.

However, the conventional ones, since you are introduced dust-containing gas stream solely from the intake port near the front center of the baffle plate as described above, has dropped the momentum of the incoming air stream by collisions diffusion, and even updrafts There was a drawback that it was difficult to evenly introduce to the whole bug filter. Moreover , since the upstream / downstream distribution is performed by narrowing the lower opening of the housing, it is impossible to perform arbitrary distribution. For example, there is a disadvantage that the equipment is expensive because the three inlets are provided in the distribution pipe so as to uniformly flow the dust-containing airflow. In addition , when the lower opening is narrowed, dust may bridge there and cause troubles.
No. 2-43460

In view of these drawbacks, the problem to be solved by the present invention is to provide a bag filter device with improved dust collection efficiency and significantly improved performance.

The present invention provides a bag filter device that introduces a dust-containing airflow from an intake port provided in front of a bag housing, and sets up and down distribution lines in accordance with a ratio of distribution to an updraft and a downdraft at the intake port. The upper and lower distribution plates for the airflow are arranged with reference to the distribution line, and the rising airflow that has lost its kinetic energy due to collision and diffusion in the introduction chamber is circulated up to the filtration chamber .

In the present invention, the amount of the air flow in the filtration chamber can be freely and actively controlled by the configuration in which the position of the vertical distribution line for the vertical air flow is moved up and down with respect to the intake port of the dust-containing air flow flowing into the introduction chamber . The amount of substantially uniform air flow to a plurality of filters bugs, because the dust is distributed, there is no deviation of the load, the recovery of stable dust is performed.

In the present invention, a distribution plate for upward airflow may be provided on the upper side of the distribution plate. According to this, it is possible to change the dust-containing airflow into a gentle, almost uniform ascending airflow and send it to the filter bag row of the filtration chamber beyond the introduction chamber. And the air volume of a filtration chamber can be freely controlled and it can be set as a substantially uniform downflow.

By making the filtration chamber downflow, the dust that has been wiped off does not reattach, but quickly drops and is recovered in combination with gravity. As a result, the reduction of the pressure loss, increase in the processing air volume, it is possible to extend the filter life can make significantly improve the performance of the bag filter.

In the present invention, a distribution plate for a downward rising airflow may be provided below the distribution plate. According to this, since the descending airflow passing through between them is created and the dust is collected in the hopper, the airflow of the descending airflow can be freely adjusted , and the dust collecting effect is improved.

In addition, since the upflow that circulates to the filtration chamber side can be controlled and can be gently formed as a whole, it is possible to prevent recollection of recovered dust due to the inlet airflow in the hopper. Furthermore, the collection plate having the through holes covering the hopper inlet of the conventional example can be removed , and dust can be collected by opening the upper portion of the hopper.

In the present invention, the distribution plate provided in the introduction chamber may be wholly or partially coupled with the guide plate, and the intake port may be a multi-inlet.
In addition, a rectifying plate extending vertically upward is arranged in the introduction chamber, the rising airflow is raised along this rectifying plate, and the flow of the updraft flowing up to the filtration chamber is made to be a substantially uniform updraft and the downflow of the filtration chamber May be formed. In this case, it is possible to disperse the rising airflow rising along the airflow rectifying plate by arranging the upper end positions of the rectifying plates so as to reduce dust wear and to prolong the life of the filter bug. .

In the present invention, a diffusion plate for further diffusing the airflow distributed and rising through the distribution plate may be disposed in the upper portion of the introduction chamber, and the diffusion airflow may be circulated to the filtration chamber. Thereby, the diffusion effect of dust can further be raised.

In the present invention, the air inlet may be arranged shifted from the front center of the housing so that the dust-containing airflow flows into the air inlet. In addition, by providing a plurality of air inlet in the front of the housing, the diffusion introduction of granular dust containing air flow can FIG Rukoto be increased circumfluence in the filtration chamber more uniform diffusion updraft.

As described above, according to the present invention, it is possible to freely and positively control the dust- containing airflow that is circulated up and down in the filtration chamber, so that the dust recovery efficiency can be increased and the performance can be remarkably improved. .

Example 1 is a basic example of the present invention.
Example 2 is one example in which the upper ends of the rectifying plates of Example 1 are aligned in a row.
Example 3 is an example in which the upper end of the current plate is bent.
Example 4 is a modification and is an example of a multi-inlet.
Example 5 is one example in which the intake port is shifted to the left from the vicinity of the center in a modified example.
Example 6 is another example using a cylindrical drooping filter bug.
Example 7 is another example in which there are two air inlets on the front of the housing.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a front view including a main-portion cross-section of the first embodiment, and shows a cross-section AA in FIG. FIG. 2 is a side view including a cross-section of the main part of the first embodiment, and a cross section taken along the line BB is shown in FIG. As shown in FIG, Oite, bugs housing 1 to a bag filter device for introducing a dust-containing gas stream 3 from the air inlet 2 provided in the vicinity of the front center of the bugs housing 1, the filtration chamber 4 and the dust-containing filtering dust And an introduction chamber 5 for the air flow 3 .

In the introduction chamber 5, there are an upper opening 7 for sending a substantially uniform updraft 6 of the dust-containing airflow 3 to the filtration chamber 4 and a lower opening 11 for sending a descending airflow 21 of the dust-containing airflow 3 to the hopper 8. A plurality of filter bugs 12 are arranged in four stages in the filtration chamber 4 provided adjacent to the introduction chamber 5. A baffle plate 13 is provided in front of the filtration chamber 4 and partitions the filtration chamber 4 and the introduction chamber 5 of the bag housing 1.
In this example, the air inlet 2 is disposed in the vicinity of a lower portion of about 1/4 of the height of the baffle plate 13. It is obvious that the position of the air inlet 2 is preferably near the lower portion of the baffle plate 13 as much as possible in view of problems such as airflow distribution, diffusion, and uniformity, and is not limited to this value.

  As shown in FIG. 2 in detail, the filtration chamber 4 has a plurality of horizontal envelopes (sizes vary depending on needs, but an example is vertical 640 mm, horizontal 1640 mm, width 30 mm). Filter bugs 12 are arranged in four rows in a horizontal row.

As shown in FIG. 2, the top of the baffle plate 13 at a height of about approximately 3/4 of the filter bug columns 12, arranged to cover over the lower three rows of filter bugs 12 to open the upper The lower end reaches the opening 11 of the hopper 8.

Updraft 6 of the dust-containing air flow 3 introduced into the introduction chamber 5, rises in the space of the upper opening portion 7 of the inlet chamber 5 along the baffle plate 13, it flows rise times in the filtration chamber 4 as shown by an arrow, the filter It becomes the downflow 22 around the bug 12. The space above the top of the baffle plate 13 becomes the upper opening 7 of the introduction chamber 5.

  The inlet top 11 of the hopper 8 connected to the lower opening of the introduction chamber 5 is opened, and the downdraft 21 of the dust-containing airflow 3 flows in.

In order to determine the ratio of the updraft 6 and the downdraft 21 in the introduction chamber 5, the upper and lower distribution lines 14 are provided at positions along the circumference of the intake port 2 . That is, by lowering the upper and lower distribution lines 14, the image dividing according to the ratio of the circumference to the vertical. The ratio may be determined on the center line of the intake port 2.

When the airflow in the introduction chamber 5 accounts for 75% of the ascending airflow to the filtration chamber 4 and the airflow 21 descending to the lower hopper 8 accounts for 25%, the inlet 2 is divided into eight equal parts. Thus, the upper six divisions are allocated to the updraft and the lower two divisions are allocated to the downflow. When divided into 16 equal parts, the upper 12 divisions are allocated to the updraft and the lower 4 divisions are allocated to the downflow. When changing the ratio, the upper and lower distribution lines 14 in the introduction chamber 5 are moved along the divided portions 16 in the area shown by hatching in FIG. 3 to determine the positions of the upper and lower distribution lines 14 .

When the distribution is performed so that about 63% (10/16 division) is an updraft and 37% (6/16 division) is a downdraft, the vertical distribution line 14 is raised by one division on the left and right . The position indicated by reference numeral 16A.

When the intake port 2 is divided into 10 parts, the position of the vertical distribution line 14 comes to the position of the division 8/10 when viewed from the upper side. In this case, it is possible to distribute so that 80% (8/10 division) of the inflowing dust-containing air flow 3 is an updraft and 20% (2/10 division) is a downdraft.

In this way, the position of the upper and lower distribution lines 14 is set based on the ratio of the area ratio of the intake port 2. The position of the upper and lower distribution lines 14, the upper and lower distributor plate 15, 15 as shown in FIG, arranged to divide the air flow above and below.

Conventionally, relatively large coarse particles that have lost their energy due to collision diffusion using the action of nature fall to the hopper along with the descending airflow, and reduce most of the air containing dust and fine powder (hereinafter referred to as dust). There is a drawback that it is difficult to uniformly introduce the entire bag filter into the updraft, but in the present invention, the ratio of the updraft and the downdraft in the introduction chamber 5 is reduced by moving the vertical distribution line 14 up and down. Since it can be actively and freely controlled, it is possible to distribute the airflow, which was impossible in the past, and to introduce it more evenly.

Thus, the upper and lower distribution of airflow in the inlet chamber 5 by the vertical movement of the dispensing line 14 is determined freely, the allocation determining the proportion of air flow for recovering dust into the down flow and hopper 8 of the filtration chamber 4.

An example will be described regarding the size of the distribution plate . In FIG. 3, if the diameter of the intake port 2 is D, the inner dimensions of the first distribution plates 15 and 17 are about 1.2 (1.0 to 1.5) D (indicated by reference numeral A1). The outer dimension is about 1.3 to 2.0D (indicated by reference numeral A2) . The distribution plate 15 is located at a position 16 that intersects with the upper and lower distribution lines 14.

The distribution plate 17 is located in the vicinity of the diameter of the intake port 2 in the same manner as the distribution plate 15 on the upper side symmetrical with the determined position of the upper and lower distribution lines 14.

The second upper and lower distribution plates 18 , 19 are vertically symmetrical with respect to the center of the intake port 2 with a distance of about 1.5 (1.3 to 2.0) D (indicated by reference numeral A 3). Is arranged.

What the inner dimension of the first distribution plate 15 and 17 and 1.2D is, until the air flow to reach the baffle plate 13, it is taken into consideration that the air flow is increased. The numerical value of each ratio with respect to the diameter D of the intake port 2 is determined by considering the balance of the application.

In order to create a substantially uniform updraft and descending airflow , ascending airflow distribution plates 17 and 18 and a downdraft airflow distribution plate 19 are arranged. Reference numeral 10 denotes a tongue-shaped distribution plate that reverses the airflow directed toward the wall of the housing 1 into an ascending airflow. Distribution plate 18 is a cross-sectional in order to prevent deposition of dust has a triangular shape and is secured to the inlet chamber 5 as well as other distributor plate. Reference numerals 20-1 and 20-2 denote rectifying plates, which deflect the upward airflow 6 upward to improve the dispersibility of the momentum so as to obtain a substantially uniform upward airflow. Lower ends of the rectifying plate are respectively bent in shape of substantially L.

Here, the operation will be described. The dust-containing airflow 3 flowing from the intake port 2 collides and diffuses into the baffle plate 13 in the introduction chamber 5 and loses kinetic energy. The dust-containing air flow 3 is increased by 75% by the upper and lower distribution plates 15 and 15 at the position of the upper and lower distribution lines 14 determined as 12/16 division positions of the intake port 2 in the introduction chamber 5 and 25% by the lowering. Distributed to. 75% of the rise, the portion which rises divided into left and right (flow between the distributor plate 15 and 17), in a gas stream passing through the gap between the upper distribution plate 17 and the triangular-shaped distribution plate 18 Rise.

For 25% of the downward amount, airflow portion 21 which passes through the branch between the distributor plate 19 of the upper and lower distributor plate 15, 15 with a downward current in the position of the upper and lower distribution lines 14, the opening 11 of the hopper 8 Drop into the hopper 8.

As described above, the rising amount of the dust-containing airflow 3 flowing into the intake port 2 is divided by the upper and lower distribution plates 15 and 15 at the position of the upper and lower distribution lines 14 and attached to the upper distribution plates 17 and 18 and the housing 1. up along the tongue of the dust containing air stream 3 by the distributor plate 10 is loose updraft 6 next are distributed or deceleration appropriate, dogleg-shaped rectifying plates 20-1 and linear current plate 20-2 are As shown in FIG. 2, the filtration chamber 4 is formed so as to form a downflow 22 around the filter bag 12 by flowing upwardly through the top of the baffle plate 13, that is, the opening 7 of the introduction chamber 5. to go into.

The lower distribution plate 19 creates a gentle, approximately uniform descending airflow 21 and serves to descend and collect relatively large dust into the hopper 8 via the lower opening 11 of the introduction chamber 5. The opening 11 of the hopper 8 is connected to the lower part of the bag housing 1. The gentle roughly uniform updraft 6 and downdraft 21, airflow of the filtration chamber 4 becomes generally approximate balance appropriately has been established uniform downflow 22.

In this embodiment, as described above, the size of the inner dimensions of the upper and lower distribution plates 15 and 15 is about 1.0 to 1.5 times the diameter D of the intake port 2 and 4 of the airflow toward the lowering distribution plate 19. An interval of / 16 divisions is provided. The descending distribution plate 19 may be of an appropriate size that is sufficient to receive and disperse the descending airflow 21. In this example, the descending distribution plate 19 is about the size of the 4/16 division interval.

Distribution plate 17 for rising is the same size as the distributor plate 15 at the center symmetrical inlet 2. The size of the triangular distribution plate 18 receives a raising air flow passing between the distribution plate 17 is a suitable size to increase diverted along the straightening vane 20-1. Further, between the upper and lower distribution plate 17 and the rectifying plate 20-1 is a suitable size to likewise increase shunt (about the size of the distributor plate 15, 17 in this example). The distance between the ascending distribution plate 17 and the triangular distribution plate 18 and the distance between the upper and lower distribution plates 15 and the descending airflow distribution plate 19 are clearly determined from the above description. The rectifying plates 20-1 and 20-2 are arranged by dividing the introduction chamber 5 into approximately six parts.

These numbers Ri forma der, to also change the contents of the dust-containing air flow, fluid conditions, so may vary by application, but is not limited thereto.

In the filtration chamber 4 of the bag housing 1, as described above, a plurality of envelope-shaped horizontal filter bag rows 12 are arranged in four stages. Since the dust-containing airflow 3 that has entered the filtration chamber 4 has the baffle plate 13, the lower three-stage filter bug 12 does not involve the inflow of the dust-containing airflow 3 from the inlet 2 , resulting in a substantially uniform downflow. .

(Referred to as pulse-jet method, sequentially performed cyclically to filter bug 12 without stop the air flow) injection of compressed air dust that has been brushed off from the filter bug 12 by, take the down flow 22 in addition to gravity, with re As soon as possible, it falls to the hopper 8 below. The clean air filtered by the filter bag 12 is exhausted out of the bag housing 1 through the exhaust port 24 through the clean chamber 23.

As shown in FIG. 1, by the introduction chamber of the deployed increased air diverted to 5 distribution plate 17 and the rectifying plate 20, airflow was substantially uniform to the opening 7 Kararo over the chamber 4 of the supply chamber 5 rises circumfluence As a result, the dispersibility of the momentum of the updraft 6 can be improved so that dust does not concentrate at an unnecessary momentum and hit the filter bug 12.

FIG. 4 shows another embodiment in which the upper end positions of the rectifying plates 20-1 and 20-2 are aligned, and the ascending air current 6 is caused to ascend and circulate from the opening 7 of the introducing chamber 5 to the filtration chamber 4. improves better momentum dispersible updraft 6 to the filtration chamber 4, dust can be prevented from hitting the filter bug 12 concentrated with unnecessary force.

FIG. 5 shows another embodiment of the rectifying plate, and a diffusion plate for further diffusing the rising airflow is provided in the upper portion of the introduction chamber 5. Rectifying plates 40-1 and 40-2 is provided with a diffusion plate 41 was at right angles bent et the upper end of the vertical central portion, the lower end is bent to the shape of the substantially L. The diffusion plate 42 attached to the housing 1 is a horizontal plate attached at the same position as the diffusion plate 41 at the upper end of the rectifying plates 40-1 and 40-2.
These structures, between distribution plate 15-17, the updraft 6-2～6- 5 distributed between distribution plates 17-18, is more diffused by the diffusion plate 41 of the rectifier plate 40-1 The air flow is 52 to 55.
By the diffusion plate 42 attached to the housing 1, the rising air 6-1 6-6 likewise diffused airflow 60-1 and 60-6. These diffused air flows become 51 to 56 and circulate ascending to the filtration chamber 4 through the opening 7.
As described in this embodiment, by arranging the diffusion plate 41 to wider diffusion of the updraft 6-1～6- 6 on top of the supply chamber 5, to make a more diffuse updraft introducing chamber 5, the dispersibility of the momentum of the updraft 6 to the filtration chamber 4 is further improved, and dust is concentrated at an unnecessary momentum and hits the filter bug 12. it can be for internal use.

FIG. 6 shows another embodiment, which is a modification of the multi-inlet in which the distribution plate 2 is coupled radially by a guide plate from the center of the intake port. In the above embodiment, but did not bind to open between each other distributor plate 15-15,17-17,18-19, in this embodiment, in the guide plate 25, 27 from the center of the intake port 2 All the distribution plates 15, 17, 18, 19 are connected. Thus, 15-25- inlet center 25-17, 17-25- inlet center 25-15, and so 18-27- inlet Center -27-19, subdivide the inlet of the dust containing air stream ing.
In the embodiment of FIG. 1, the horizontal distribution plate 26 is not disposed. However, in this example, a horizontal distribution plate 26 is additionally provided to form a multi-inlet.
In this way, by connecting the distribution plates 15, 17, 18, 19 with the guide plates 25, 27, the dust-containing air flow 3 is distributed and flows in when entering the introduction chamber 5 , and effectively in the distribution plate. It becomes a substantially uniform distribution updraft and circulates in the filtration chamber 4.

The concept of the upper and lower distribution lines 14 is the same as in the above embodiment. The guide plates 25 and 27 do not have to be connected to all of the distribution plates 15, 15, 17, 17, 18, and 19, and only the distribution plates 15 are connected with the guide plate 25 , or the upper distribution plate 18 and the distribution plate 18 are distributed. Only the plates 17 are coupled by the guide plates 25 and 27, only the lower distribution plate 15 and the distribution plates 19 are coupled by the guide plates 25 and 27 , or only the distribution plate 18 and the distribution plates 17 are guided. Various multi-coupling patterns, such as coupling with the plate 27, can be considered as necessary. Therefore, it goes without saying that the present invention is not limited to the above-described embodiment.
Also in this embodiment, it may be aligned with the upper end position of the current plate 20-1 and 20-2.

As another embodiment, an example in which the intake port is shifted from the center to the left or right will be described. In the embodiment shown in FIG. 7 , the air inlet 2 is shifted from the center to the left. The concept of the upper and lower distribution lines 14 is the same as in the above embodiment.
Along the distribution line 14 , upper and lower distribution plates 15, 15 are arranged. Further, a distribution plate 19 for the downward airflow is provided below the upper and lower distribution plates 15, 15.

The tongue-shaped distribution plate 10 attached to the housing 1 reverses the airflows 33-1 and 33-6 directed toward the wall of the housing 1 into the rising airflows 33-2 and 33-8 (see FIG. 7). The ascending portion of the upper portion (12/16, ie, 75%) of the intake port 2 divided into 16 parts is divided by a 15-25-25-15 partition composed of upper and lower distribution plates 15 and 15 and a guide plate 25. . Reference numerals 30-1 to 30-4 denote rectifying plates, which circulate the ascending air currents 33-1 to 33-8 as a substantially uniform ascending current into the filtration chamber 4 as in the above embodiment .

The descending airflow component flows into 25% of the air inlet 2 , that is , the 4/16 division (corresponding to the hatched portion) below the upper and lower distribution lines 14 (below the partition of 15-25-25-15 above). To do. Since the intake port 2 is shifted to the left from the center of the introduction chamber 5, the partition of the descending air flow constituted by the guide plate 31 -distribution plate 19 is divided into four parts with respect to the partition of the above 15-25-25-15. Among them, one division is left, and the remaining three divisions are right. Here, the description is spatially in a 1: 3 relationship.

The 1/4 downward airflow is 34-1 on the left side of the guide plate 31 , and the 3/4 downward airflow is 34-2 to 34-4 on the right side of the guide plate 31, so that the opening 11 Through the hopper 8 .
As shown by the flow of the chain line in FIG. 8, ascending air currents 33-1, 33-2 flowing between the distribution plate 15-distribution plate 10-housing 1 wall and the rectifying plate 30-1, and the rectifying plate 30-1. Ascending currents 33-3 flowing between 30 and 30-2, rectifying plates 30-2, ascending currents 33-4 and 33-7 flowing between 30-3 and 30-5, and rectifying plates 30-5 and 30-4 Ascending airflow 33-5, 33-6, 33-8 flowing between the guide plate 25 and the distribution plate 15 is created . Also in this example, the upper end positions of the rectifying plates 30-1, 30-3, and 30-4 may be aligned as in the above embodiment.

In this way, it is not necessary to provide the inlet 2 near the center of the housing 1 simply by changing the shape of the current plate, and even if there is a restriction that the inlet 2 must be shifted to the left or right due to the structure, A flexible layout of the inlet 2 is possible.

In the above embodiment , the lateral insertion type envelope type was described as the filter bug 12, but as another embodiment, as shown in FIG. 9, a cylindrical hanging filter bug 28 (as in FIG. 1 is used instead of the horizontal type). Even if it is used as a three-dimensional structure in which a plurality of filter bugs are arranged along the baffle plate 13, the idea of the present invention is not impaired. The same reference numerals in the figure indicate the same configurations as in the above embodiment .

In the above embodiment, the case where there is one intake port 2 has been described. However, as shown in FIG. 10 , two (or more) intake ports may be provided.
Rectifying plate 50-2,50-2 is located above the air inlet 2-1 and the air inlet 2-2 respectively between the wall and the central rectifying plate 50-3 housing 1, substantially uniform ascending air current 6 To. In the intake ports 2-1 and 2-2 arranged symmetrically on the rectifying plate 50-3 at the center of the housing, the upper and lower distribution plates 15 and 15, the distribution plates 17, 18, and 19 and the distribution are made in the same way as in the above embodiment. A plate 10 is arranged. 50-4 is a current plate of triangular pieces result in an increase airflow kicked set to the lower end of the central rectifier plate 50-3. The same reference numerals in the figure indicate the same configurations as in the above embodiment .

Thus, in this embodiment, for example, two intake ports are provided. For this reason, it is possible to cope with a case where a plurality of air inlets are necessary for the convenience of dust collection and dust, and a more uniform diffusion updraft can be circulated to the filtration chamber 4.

In the above embodiment , the baffle plate 13 is arranged in the introduction chamber 5 and used for partitioning the filtration chamber 4 and attaching the distribution plates 15, 17, 18, 19 and the rectifying plate 20. Obviously, the wall portion may be used to perform the same function.

In the above embodiment, the air inlet has been described an example where a cylindrical, the present invention also inlet is a square can be applied.

The front view containing the principal part cross-section part of the bag filter apparatus of the Example of this invention . The side view containing the principal part cross-section part of the bag filter apparatus of the Example of this invention . The figure explaining the structure of a distribution plate and a baffle plate in detail . The figure which shows the other Example which arranged the front-end | tip of the baffle plate . The figure which shows the other Example provided with the diffusion plate which diffuses an updraft in the upper part of an introduction chamber . The figure which shows the example in which an inlet port is a multi inlet as another Example. The figure which shows the example which the inlet port shifted | deviated from the center as another Example. The figure explaining the flow of the airflow of FIG. The side view which shows the example which used the cylindrical thing as another Example of a filter bug . The figure which shows the other Example which has two inlets in the front of a housing .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bug housing 2 ... Intake port 3 ... Dust containing air flow 4 ... Filtration chamber 5 ... Introduction chamber 6 ... Ascending air flow 7 ... Opening 8 ... Hopper 10. ..Distribution plate 12 ... Filter bug (row)
DESCRIPTION OF SYMBOLS 13 ... Baffle plate 14 ... Vertical distribution line 15 ... Vertical distribution plate 17, 18 ... Distribution plate for upward airflow 19 ... Distribution plate for downward airflow 20 ... Rectification plate 21・ ・ Down air flow 22 ・ ・ ・ Down flow 25, 27, 31 ・ ・ ・ Guide plate 26 ・ ・ ・ Horizontal distribution plate 28 ・ ・ ・ Cylindrical filter bag 30 ・ ・ ・ Rectifying plate 33 ・ ・ ・ Up air flow 34 ・ ・-Downward airflow 40 ... Rectification plate 41 ... Diffusion plate arranged in the upper part of the introduction chamber 42 ... Diffusion plate 50 ... Rectification plate 51-56 ... Diffused airflow 60 ... Diffused Airflow

Claims (9)

In a bag filter device that introduces a dust-containing airflow from an air inlet provided in front of the bag housing, an upper / lower distribution line 14 is set in the air intake 2 in accordance with a ratio of distributing an ascending airflow and a descending airflow. 14 is a bag filter device in which upper and lower air distribution plates 15 and 15 are arranged with reference to 14, and an ascending airflow that collides and diffuses in the introduction chamber 5 and loses kinetic energy flows upward into the filtration chamber 4. The bag filter device according to claim 1, wherein distribution plates ( 17 , 18) for upward airflow are provided on the upper side of the distribution plates (15, 15 ). The bag filter device according to claim 1 or 2, wherein a distribution plate (19) for downward airflow is additionally provided below the distribution plates (15, 15 ). Bag filter apparatus according to any one of 3 the distribution plate provided in the inlet chamber 5 attached at all or partially guide plate, the preceding claims, characterized in that the inlet and multi inlet. The introduction chamber 5, arranged rectifying plate 20 extending vertically upward, rising air was raised along the rectifying plate 20, filtering chamber flow updraft rising swirling flow in the filtration chamber 4 as a nearly uniform updraft bag filter apparatus according to any one of claims 1 to 4, characterized in that to form a fourth down-flow. The introduction chamber 5, arranged rectifying plate 20 extending vertically upward, rising air was raised along the rectifying plate 20, and arranged aligned position of the upper end of the current plate, rises swirling flow in the filtration chamber 4 The bag filter device according to any one of claims 1 to 5, wherein the downflow of the filtration chamber 4 is formed by using the ascending airflow as a substantially uniform updraft. The top of the inlet chamber 5, claim 1, wherein the distributed through the distribution plate to place the diffuser plate to increase to have further diffuse the air flow, characterized in that the diffusion airflow Ru flowed filtration chamber 4 twice The bug filter device according to any one of 6. The air inlet 2 is arranged by shifting from the front center of the housing 1, the bag filter apparatus according to any one of 7 to claim 1, wherein the flowing a dust-containing gas stream 3 into the intake port. The bag filter device according to claim 1, wherein a plurality of air inlets 2 are provided in front of the housing 1.