JPH0713414U - Bag filter retainer - Google Patents

Abstract

(57) [Summary] [Purpose] The removal work can be performed easily in a short time regardless of whether or not the filter cloth is fixed. [Structure] Ring members 32 are arranged in a plurality of upper and lower stages, and a plurality of vertical members 33 are arranged on the outer periphery of the ring member 32 at regular intervals to form a vertically long cage shape, and a snap ring 5B is formed at the upper end.
It is a bag filter retainer 31 that is inserted into a vertically long bottomed cylindrical filter cloth 5 provided with and holds the filter cloth 5 from the inside. The uppermost ring member 32A of the ring members 32 is arranged so as to be shifted downward to a position where the snap ring 5B can be bent inward, and the upper end portion of one vertical member 33 is removed to make the snap ring. 5B is formed so that it can be bent inward. At this portion, the snap ring 5B is bent inward, and the retainer 31 and the filter cloth 5 are removed together. Thereby, the retainer 31 and the filter cloth 5 can be easily removed in a short time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bag filter / retainer that holds a filter cloth of a bag filter for collecting dust-containing gas in various factories from the inside.

[0002]

[Prior art]

 Generally, a dust collector equipped with a bag filter is constructed as shown in FIG. A bag chamber 2 in the apparatus main body 1 is provided with a large number of bottomed cylindrical filter cloths 5 each having a retainer 4 installed therein in a hanging state from a perforated partition plate 3 on the upper side thereof. A gas inlet 6 for introducing dust-containing gas from a dust source is provided on one side of the bag chamber 2. A baffle plate 7 is provided in the bag chamber 2 at a position facing the gas introduction port 6 to prevent the dust-containing gas introduced from the gas introduction port 6 from directly hitting the bag chamber 2. As a result, the dust-containing gas flowing in from the gas introduction port 6 collides with the baffle plate 7 and the coarse dust and the like in the gas falls downward to perform primary dust collection. Secondary dust collection is carried out through each filter cloth 5 so as to carry out filtration dust collection.

The clean air filtered through each filter cloth 5 enters the upper chamber 8 on the upper side of the partition plate 3 from the inside of each filter cloth 5 through the upper end opening thereof, and from there through the exhaust duct 9. The blower (not shown) allows the air to be exhausted outdoors.

Further, a pulse air supply pipe 10 for backwashing is provided in the upper chamber 8, and jet pulse air is periodically jetted from the supply pipe 10 into each of the filter cloths 5. The dust collected on each filter cloth 5 is removed to regenerate each filter cloth 5. The dust that has been blown off is settled and collected in the hopper 11 below the bag chamber 2, and the discharge valve 12 at the lower end thereof is opened at appropriate times to remove it.

Here, a conventional retainer 4 for suspending and holding each filter cloth 5 has a configuration shown in FIGS. 9 to 11. That is, the retainer 4 is inserted into a vertically long cylindrical filter cloth 5 having an open upper end and supports the filter cloth 5 from the inside. The retainer 4 and the regular octagonal ring members 15 are respectively arranged in a plurality of upper and lower stages. Each of the ring members 15 is formed in a vertically long cage shape including eight vertical members 16 fixed to each other by welding or the like and arranged at equal intervals. The uppermost ring material 15 is positioned inside and supports the snap ring 5B described later. A bottom plate 17 such as a tray is fixed to the lower end of the retainer 4. Further, a folded-back portion 16A which is folded back outward is formed at the upper end of each vertical member 16, and the folded-back portion 16A is hooked on the partition plate 3 in the mounted state as shown in FIG.

As shown in FIG. 12, the filter cloth 5 is composed of a vertically long bottomed tubular bag body portion 5A and a snap ring 5B sewn into the opening at the upper end opening of the bag body portion 5A. Has been done. The snap ring 5B includes an elastic ring 21 formed of an annular elastic flat plate, a packing 22 disposed on the outer surface of the elastic ring 21 and forming two annular raised portions 22A and 22B at the top and the bottom. It is composed of an outer cloth 23 for covering. The snap ring 5B is attached by sewing the lower portion of the outer cloth 23 onto the upper end of the bag portion 5A. The snap ring 5B fits the filter cloth 5 to the partition plate 3 by fitting the inner peripheral edge of the mounting hole 3A of the partition plate 3 into the recess between the upper and lower annular raised portions 22A and 22B. It has become.

Then, the filter cloth 5 and the retainer 4 are mounted as follows. Fit the filter cloth 5 into each mounting hole 3A of the partition plate 3 from above and bend the snap ring 5B inward to fit each mounting hole 3A. In this state, the retainer 4 is placed inside the filter cloth 5. insert. As a result, the filter cloth 5 is held from the inside by the retainer 4, and the dust-containing gas is filtered and collected without being compressed and flattened by the suction-conduction of the dust-containing gas, and the snap ring 5B is supported from the inside. As a result, the snap ring 5B is prevented from bending inward and the filter cloth 5 is prevented from falling off the partition plate 3.

When the dust collector operates for a long period of time and the filter cloth 5 is exposed to the dust-containing gas for a long period of time, the filter cloth 5 deteriorates with time and reaches the end of its life. Further, the filter cloth 5 may be damaged due to an unexpected accident. When the filter cloth 5 reaches the end of its life or is damaged in this way, the filter cloth 5 must be promptly replaced and the dust collector must be returned to the normal state. The replacement of the filter cloth 5 is performed by the following procedure.

First, the retainer 4 is pulled out upward. Next, the snap ring 5B is bent inward to be removed, and the filter cloth 5 is dropped downward.

Next, a new filter cloth 5 is inserted into the mounting hole 3A of the partition plate 3 from above, and the snap ring 5B is fitted into the mounting hole 3A. After that, the retainer 4 is inserted to complete the work.

[0011]

[Problems to be solved by the device]

 However, if the filter cloth 5 is damaged and dust accumulates inside the filter cloth 5, or if the retainer 4 rusts due to the dust-containing gas, the contact resistance with the filter cloth 5 increases, The retainer 4 and the filter cloth 5 may stick to each other, but in this case, it becomes difficult to remove the retainer 4 from the filter cloth 5. If the retainer 4 cannot be removed, the snap ring 5B cannot be bent inward to remove the filter cloth 5 from the mounting hole 3A.

At this time, the upper portion of the retainer 4 is deformed inward, the snap ring 5B is bent inward, and the retainer 4 and the filter cloth 5 are extracted upward together, and the retainer 4 and the filter cloth 5 are removed at another place. 5 and separated.

However, in this case, since the ring member 15 is located inside the snap ring 5B, the filter cloth 5 cannot be pulled out even if only the vertical member 16 is deformed inward. It has to be transformed. For this reason, there is a problem that the removal work requires a long time and the workability deteriorates.

The present invention has been made in view of the above problems, and an object thereof is to provide a bag filter retainer that can be easily removed in a short time regardless of whether or not it is fixed to a filter cloth. And

[0015]

[Means for Solving the Problems]

 In order to solve such a problem, a first invention is to arrange a ring member in a plurality of upper and lower stages at regular intervals, and to arrange a plurality of vertical members at regular intervals around the ring member in a vertical direction. In a bag filter retainer that is formed into a long basket shape and is inserted into a vertically long bottomed cylindrical filter cloth with a snap ring provided at the upper end to hold the filter cloth from the inside, the most of the plurality of ring materials is used. The upper ring member is arranged so as to be shifted downward to a position where the snap ring can be bent inward.

A second invention is to form a ring-shaped cage by arranging ring members in a plurality of upper and lower steps at regular intervals and arranging a plurality of vertical members at regular intervals around the ring members. In the bag filter retainer that is inserted into a vertically long bottomed cylindrical filter cloth having a snap ring at the upper end and holds the filter cloth from the inside, one or more of the plurality of vertical members are provided. The upper end of the vertical member is removed to form a portion where the snap ring can be bent inward.

According to a third aspect of the present invention, the ring members are arranged in a plurality of upper and lower steps at regular intervals, and a plurality of vertical members are provided around the ring members at regular intervals to form a vertically long cage shape. Then, in a bag filter retainer that is inserted into a vertically long bottomed cylindrical filter cloth having a snap ring at the upper end and holds the filter cloth from the inside, a ring material at the uppermost stage of the plurality of ring materials is used. Is arranged so as to be shifted downward to a position where the snap ring can be bent inward, and one or more vertical members of the plurality of vertical members are removed to remove the snap ring. It is characterized by forming a part that can be bent inward.

[0018]

[Action]

 According to the first invention, when the retainer sticks to the filter cloth and cannot be pulled out, the vertical member supporting the snap ring can be bent inward from the position of the uppermost ring member and the snap ring can be bent inward. To form. Then, fold the snap ring inward at this space and remove the retainer and filter cloth together. This allows the retainers to be easily removed in a short time even if they are attached to the filter cloth.

According to the second invention, the upper end portion of one or more vertical members is removed to form a portion where the snap ring can be bent inward, and at this portion, the snap ring is bent inward to form a retainer. Remove the filter cloth together. This also allows the retainer and filter cloth to be easily removed in a short time.

According to the third invention, the uppermost ring member is arranged so as to be shifted downward, and the snap ring can be bent inward by removing the upper ends of one or a plurality of vertical members. Form it, fold the snap ring inward at this point and pull out the retainer and filter cloth together. If the snap ring cannot be bent inward with this part alone, the vertical member that has not been removed can be bent inward from the position of the uppermost ring member and the snap ring can be bent inward. Enlarge, fold the snap ring inward, and remove the retainer and filter cloth together. This also allows the retainer and the filter cloth to be easily removed in a short time.

[0021]

【Example】

 Hereinafter, an embodiment of the bag filter / retainer of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a vertical sectional view showing a bag filter / retainer according to this embodiment, FIG. 2 is a plan view of the bag filter / retainer, and FIG. 3 is a partial sectional view showing an essential part of the bag filter / retainer. Since the entire structure of the dust collector according to the present embodiment is similar to that of the conventional dust collector described above, the same parts are designated by the same reference numerals and the description thereof will be omitted.

Reference numeral 31 in the figure denotes a bag filter / retainer according to this embodiment. The bag filter / retainer 31 is provided with a regular octagonal ring member 32 arranged in a plurality of upper and lower stages at regular intervals, and is fixed to the outer circumference of these ring members 32 by welding or the like and arranged at equal intervals. It is formed in a vertically long cage shape composed of eight vertical members 33. The vertical members 33 are fixed to the respective apexes of the regular octagonal ring member 32. A bottom plate 34 is attached to the lower end of the vertical member 33. A semi-circular folded back portion 33A is formed on the upper end of each vertical member 33, and the folded back portion 33A covers the upper side of the snap ring 5B at the upper end of the filter cloth 5 so that the folded portion 33A can be hooked to the peripheral edge of the mounting hole 3A. Has become.

Of the ring members 32 arranged in a plurality of upper and lower stages, the uppermost ring member 32A is arranged so as to be shifted downward to a position where the snap ring 5B can be bent inward in the mounted state. That is, the snap ring 5B is fitted into the mounting hole 3A, the filter cloth 5 is mounted on the partition plate 3, the retainer 31 is inserted into the filter cloth 5, and the folded portion 33A at the upper end thereof is hooked on the peripheral edge of the mounting hole 3A. In this state, the ring material 32 is provided so as to be located below the snap ring 5B of the filter cloth 5, and the snap ring 5B can be bent inward. With this, by folding the vertical member 33 inward from the position of the uppermost ring member 32A, the snap ring 5B can be folded inward at that position and the filter cloth 5 can be removed. Can be formed.

Further, of the eight vertical members 33, the upper end portion of one vertical member 33B is removed. As a result, the vertical member 33B with the upper end removed and the ring member 32 displaced downward form a folding space 35 for bending the snap ring 5B inward. Further, the upper end of the vertical member 33B from which the upper end portion is removed is folded back inward at the position of the ring member 32B in the second stage from the uppermost stage so as not to damage the filter cloth 5.

With the above configuration, the filter cloth 5 is attached as shown in FIGS. 4 to 7.

First, the filter cloth 5 is inserted into the mounting hole 3A as shown in FIG. 4, and the snap ring 5B is bent inward as shown in FIG. 5 to be fitted into the mounting hole 3A. Then, the retainer 31 is inserted into the filter cloth 5 as shown in FIG. 6, and is inserted until the folded portion 33A covers the upper side of the snap ring 5B as shown in FIG. 7 and is caught by the peripheral edge of the mounting hole 3A. As a result, the snap ring 5B is supported by each of the vertical members 33 from the inside.

Further, when the filter cloth 5 is replaced due to deterioration or the like, the process reverse to the above-described mounting process is performed. That is, first, the retainer 31 is removed from the filter cloth 5, the snap ring 5B is bent inward to remove the filter cloth 5 from the mounting hole 3A, and then the retainer 31 is extracted upward or dropped downward.

When the retainer 31 is stuck to the filter cloth 5 and cannot be removed, the snap ring 5B is bent inward from the portion of the folding space 35, and the snap ring 5B is removed from the mounting hole 3A. Pull the retainer 31 and the filter cloth 5 together upward. Then, the retainer 31 and the filter cloth 5 are separated at another place.

As described above, even when the retainer 31 is fixed to the filter cloth 5, the retainer 31 and the filter cloth 5 can be removed without deforming the retainer 31. As a result, the removal work can be easily performed in a short time.

In the above embodiment, the case where the uppermost ring member 32 is shifted downward and one vertical member 33 is thinned out has been described as an example, but the uppermost ring member 32 is shifted downward and arranged. The removal work can be easily carried out in a short time even just by installing it. That is, when the retainer 31 sticks to the filter cloth 5 and cannot be pulled out, the vertical member 33 supporting the snap ring 5B may be bent inward from the position of the uppermost ring member 32A to bend the snap ring 5B inward. Form a bendable space that can. Then, the snap ring 5B is bent inward at the position of this bending space, and the retainer 31 and the filter cloth 5 are removed together.

Further, even if only the upper end portion of one vertical member 33 is removed, the same effect as described above can be obtained. That is, the upper end of one vertical member 33 is removed to form a portion where the snap ring 5B can be bent inward, and at this portion, the snap ring 5B is bent inward and the retainer 31 and the filter cloth 5 are put together. Pull out.

Although the ring member 32 is formed in a regular octagonal shape in the above-described embodiment, it goes without saying that it may be a polygonal shape having another number of angles or an annular shape. Along with this, the number of the vertical members 33 changes.

Further, although all the vertical members 33 are arranged on the outer periphery of the ring member 32, the present invention is not limited to this, and the ring members 32 are formed by corrugating, and the vertical members 33 are alternately arranged inside and outside. You may choose to do so.

In the above-described embodiment, the case where the upper end position of the vertical member 33 for removing the upper end portion is extended to the position of the second ring member 32B from the uppermost stage has been described as an example. It goes without saying that it may be extended to the vicinity of the ring material 32A.

[0035]

[Effect of device]

 As described above in detail, according to the bag filter / retainer of the present invention, even if the retainer is fixed to the filter cloth, the removal work can be easily performed in a short time.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a bag filter / retainer according to the present invention.

FIG. 2 is a plan view of the bag filter / retainer shown in FIG.

FIG. 3 is a partial cross-sectional view showing a main part of the bag filter / retainer shown in FIG.

FIG. 4 is a state diagram in which a filter cloth is inserted into a mounting hole.

FIG. 5 is a view showing a state in which a snap ring is fitted in the mounting hole.

FIG. 6 is a view showing a state where a retainer is inserted in the filter cloth.

FIG. 7 is a perspective view showing a state in which a filter cloth and a retainer are attached.

FIG. 8 is a schematic configuration diagram showing a dust collector.

FIG. 9 is a vertical sectional view showing a conventional bag filter / retainer.

10 is a plan view of the bag filter / retainer shown in FIG. 9. FIG.

FIG. 11 is a partial cross-sectional view showing the main parts of the bag filter / retainer shown in FIG.

FIG. 12 is a cross-sectional view of essential parts showing a snap ring of a filter cloth.

[Explanation of symbols]

31 ... Retainer, 32 ... Ring material, 32A ... Top-stage ring material, 33 ... Vertical member, 33A ... Folding portion, 33B ... Vertical member with upper end removed, 35 ... Bending space.

Continued Front Page (72) Inventor Shinzo Koizumi 1-37 Kyoritsutsumi, Hiratsuka, Kanagawa Japan Air Filter Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A ring-shaped member is arranged in a plurality of upper and lower steps at regular intervals, and a plurality of vertical members are provided around the ring member at regular intervals to form a vertically long cage, and the upper end is formed at the upper end. In a bag filter retainer that is inserted into a vertically-long bottomed tubular filter cloth provided with a snap ring and holds the filter cloth from the inside, the snap ring of the uppermost ring member of the plurality of ring members is The bag filter retainer is characterized in that the bag filter retainer is arranged so as to be shifted downward to a position where it can be bent inward. 2. A ring-shaped member is arranged in a plurality of upper and lower stages at regular intervals, and a plurality of vertical members are disposed around the ring member at regular intervals to form a vertically long cage shape. A bag filter retainer which is inserted into a vertically long bottomed cylindrical filter cloth provided with a snap ring and holds the filter cloth from the inside, wherein the upper end of one or a plurality of the vertical members of the plurality of vertical members A bag filter retainer characterized in that a portion capable of bending the snap ring inward is formed by removing the portion. 3. Ring members are arranged in a plurality of upper and lower steps at regular intervals, and a plurality of vertical members are provided around the ring members at regular intervals to form a vertically long cage shape. In a bag filter retainer that is inserted into a vertically-long bottomed tubular filter cloth provided with a snap ring and holds the filter cloth from the inside, the snap ring of the uppermost ring member of the plurality of ring members is Can be bent downwards to a position where they can be bent inward, and at the same time, the snap ring can be bent inward by removing the upper end of one or a plurality of vertical members of the plurality of vertical members. A bag filter retainer characterized by forming a part.