JPH0751524A - Bag filter centering device of bag filter type dust collector - Google Patents

Abstract

PURPOSE:To keep and adjust the mutual intervals between bag filters almost constant by attaching a plurality of attaching angle adjusting screws to the annular cage plate provided to the upper end of a retainer holding each of the filter bags and selecting either one of the screws to adjust the filter bag up and down. CONSTITUTION:Nuts 22 are directly welded to the annular cage plate 13 attached to the upper end of a retainer 12 at a plurality of places and adjusting screws 23 are screwed in the nuts 22. The upper end of a bag filter 10 is fixed to an attaching metal fitting by an expansion band 11 and, after the retainer 12 is inserted, the is selected corresponding to the inclination of the lower end of the bag filter 10 to be revolved and the leading end of the bag filter 10 is pressed to a partition wall 3 to adjust the lower end of the bag filter 10. As a result, the inclination of the cage plate 13 and the retainer 12 is corrected and the lower end of the bag filter 10 is moved before and behind and left and right to perform centering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centering device for maintaining a constant space between bag filters in a bag filter type dust collector.

[0002]

2. Description of the Related Art An example of the above bag filter type dust collector is shown in FIGS. This dust collector 1 divides the inside of the housing 2 into a dust-containing air chamber 4 and a purified air chamber 5 by a partition wall 3, the dust-containing air chamber 4 is connected to, for example, various furnaces 6, and the purified air chamber 5 is a suction fan. Etc. to the suction device 7. A large number of bag filter attachment holes 8 are formed in the partition wall 3, bag filter attachment fittings 9 are fixed to the inner periphery of the attachment holes 8, and the upper end of the bag filter 10 is expanded from the inside by an expansion band 11. It is supported by the mounting bracket 9. A cage-shaped retainer 12 for expanding and supporting the bag filter 10 is inserted into the bag filter 10, and an annular cage plate 13 is attached to the upper end of the retainer 12. Further, the purified air chamber 5 is provided with a high-pressure air supply pipe 14 for each row or column of the bag filters 10, and each air filter 14 has a high-pressure air supply pipe 14.
On the other hand, the backwashing pressure air jet nozzle 15 is attached. 16
Covers the tip of the nozzle 15 and the base end of the cage plate 13.
Shows a bench lily tube supported by.

In the above structure, the dust-containing gas containing dust generated in the various furnaces 6 is sucked into the dust-containing air chamber 4 by the suction device 7, filtered by the bag filter 10, and the purified air is purified air. It reaches the chamber 5 and is sucked and discharged by the suction device 7. And bag filter 10
When dust accumulates on the surface of the bag and reaches a predetermined pressure loss value, backwash pressure air is jetted from the backwash nozzle 15 for each column or row of the bag filter to remove the attached dust. is there.

At this time, since the bag filter 10 improves the filtration efficiency of the dust collector 1 and reduces the occupied area, the distance between the filters is as narrow as possible and the bag filter has a considerable length. For example, the diameter of the bag filter is 160 mm, the attachment pitch is 210 mm, and the length thereof is about 4 m. Further, the retainer 12 is usually a basket type using a thin steel wire, and some bending is unavoidable. Therefore, the lower end of the bag filter 10 makes contact P and contact Q with the housing 2 as shown in FIG. There is something. This contact not only reduces the effective filtration area and causes friction between the bag filters to damage the bag filters, but dust W accumulates on the contact portions P and Q, and the accumulated dust is reversed by the pressure air. There is a problem that the dust cannot be removed reliably by washing, and accumulated dust grows sequentially, leading to a reduction in filtration efficiency.

To avoid this, as shown in FIG. 5, a shim plate 50 having an appropriate thickness is inserted between the annular cage plate 13 attached to the upper end of the retainer 12 and the partition wall 3 to adjust the distance between the lower ends of the bag filters. Means are taken. However, the bag filter 10 has a large number of attachments, and sometimes has a number of thousands per one dust collector. It is not possible to prepare a large number of shim plates having different thicknesses, select them, and insert and adjust them. , Is extremely troublesome. The present invention has been made in view of the above points, and an object thereof is to easily perform centering work for a large number of bag filters.

The bag filter centering device of the bag filter type dust collector of the present invention for achieving the above object is the bag cage type dust collector in which the annular cage plate attached to the upper end of the retainer for expanding and holding the bag filter is divided. The gist of the present invention is to attach a plurality of attachment angle adjusting screws to the wall and adjust the distance between the lower ends of the bag filters by tilting the retainer by adjusting the screws.

[0007]

[Operation] By selecting the adjusting screw and adjusting it in the vertical direction, the lower end of the bag filter is moved forward, backward, leftward and rightward to correct its inclination. As a result, the bag filters can be installed vertically, and the space between adjacent bag filters can be maintained and adjusted to be substantially constant.

[0008]

Embodiments FIGS. 1 to 3 show an embodiment of the present invention.
The bag filter type dust collector 1 has the same structure as that described above, and the same parts are designated by the same reference numerals and the description thereof will be omitted. The centering device 20 for the bag filter 10 in the dust collector 1 welds the nuts 22 or the dowel 21 directly to the annular cage plate 13 attached to the upper end of the retainer 12 at a plurality of places, for example, three places. Money 2
Weld nut 22 to No. 1 and adjust screw 2 to this nut 22.
3 is screwed together.

Thus, when adjusting the distance between the lower ends of the bag filters 10, the upper end of the bag filter 10 is fixed to the mounting member 9 by the expansion band 11, and the retainer 12 is inserted, and then the lower end of the bag filter 10 is inserted. By selecting the screw 23 according to the inclination and turning and pressing the tip of the screw 23 against the partition wall 3 for adjustment, the inclination of the cage plate 13 and the retainer 12 is corrected, and the lower end of the bag filter 10 is moved forward, backward, leftward and rightward through this retainer. And the centering work is performed. Thereby, the gap between the lower ends of the adjacent bag filters can be adjusted appropriately, and the bag filter 10 can be installed vertically.

[0010]

As described above, according to the present invention, when adjusting the space between the lower ends of the bag filter, the amount of adjustment screws taken in and out is simply adjusted, and the inclination of the cage plate with respect to the partition wall is adjusted. The operation is extremely simple, and the centering work of many bag filters can be performed efficiently, contact between bag filters and contact with the housing are eliminated, and not only damage of bag filters is prevented but also filtration is not performed. It avoids the reduction of the area and eliminates the accumulation of dust. Moreover, the structure has an effect that it is simple and can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a bag filter to which the present invention is applied.

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is an explanatory view of a mounted state of a bag filter.

FIG. 4 is an explanatory view of a centering procedure of a conventional bag filter.

FIG. 5 is an explanatory view of a mounted state of a conventional bag filter.

[Explanation of symbols]

 1 Bag filter type dust collector 3 Partition wall 10 Bag filter 12 Retainer 13 Cage plate 20 Bag filter centering device 23 Adjustment screw

Claims (1)

[Claims] 1. A bag filter for filtering dust-containing gas is suspended from a partition wall that separates a dust-containing air chamber and a purified air chamber, and a backwashing pressure air jet is blown to the bag filter in the purified air chamber. In a bag filter type dust collector having a nozzle, a plurality of mounting angle adjusting screws are attached to a partition wall on an annular cage plate attached to the upper end of a retainer for expanding and holding the bag filter, and the bag filter is adjusted by adjusting the screws. A bag filter centering device for a bag filter type dust collector, characterized in that a space between the lower ends is adjusted.