JP2746536B2 - Bag filter retainer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segmented bag filter retainer for supporting a flexible filter cloth from the inside.

[0002]

2. Description of the Related Art In recent years, pollution control standards have become strict, and the conventional electric precipitator system has been gradually switched to a bag filter system. The base filter cloth length is also 2
It tends to elongate from 3 m to 5 to 7 m.

When the filter cloth is lengthened, a retainer that is inserted into the filter cloth and retains the original shape of the flexible filter cloth also becomes longer. Not only insertion / removal, but also transportation / loading work on the way becomes difficult,
In particular, when the device is installed indoors, the degree of difficulty further increases.

For this purpose, conventionally, as shown in FIGS. 5 and 8, there has been adopted a method in which a retainer is disassembled into two or more unit retainers, butt-connected when inserted into a filter cloth, and disassembled when removed. ing.

FIG. 5 to FIG.
1 shows a structure of a retainer described in Japanese Patent Application Laid-Open Publication No. H10-260, 1988. The plurality of vertical members b of the upper split retainer a are welded to the fixing rings c1 and c2 to form a basket-shaped cylinder. The plurality of vertical members e of the lower divided retainer d are fixed rings f1, f2,
f3, and a bottom plate g is attached to the lower end thereof.

As shown in FIG. 6, the lower end of the vertical member b of the upper split retainer a, which forms a joint with the lower split retainer d, is bent slightly inward, and a groove is provided in the middle of the bent portion b1. b2 is formed, and a fixing ring f3 of the lower divided retainer d is formed.
Are fitted.

Further, the upper end of the vertical member e of the lower split retainer d opposed also, as shown in FIG. 7, bent slightly inwardly, groove e ₂ is formed in the middle of the bent portion e _1, The fixing ring c2 of the upper split retainer a is fitted.

FIG. 8 shows the structure of a retainer described in Japanese Utility Model Publication No. 5-32169.

The plurality of vertical members j of the upper cage element h are provided on an annular cross member k and a collar ring m, and the plurality of vertical members p of the lower cage element n are similarly provided with an annular cross member q and a collar member r. To form a basket-shaped cylinder.

The upper cage element h and the lower cage element n are connected to a hook-shaped fixed receiving s disposed on the inner surface of the lower end of the upper cage element h and a base fitting t disposed on the lower cage element n. It is connected by the provided operating lever u and a fastener w with a latch v.

A plurality of clasps x disposed at the junction between the upper cage element h and the lower cage element n prevent horizontal movement.

[0012]

However, according to the structure of the retainer described in Japanese Utility Model Laid-Open No. 4-106617, the retainer can be easily disassembled by tilting either the upper or lower divided retainers a and d. On the other hand, there is a problem that the connecting portion is easily detached due to the lateral swing of the filter cloth and the retainer when the attached dust is removed or when the amount of the processing gas changes suddenly.

Once the retainer is disconnected,
There has been a problem that the load of the lower retainer d is applied to the filter cloth, and the roll becomes large, resulting in damage to the filter cloth.

Furthermore, at the time of connection, the upper and lower respective divided retainers a, because of a method of press-fitting the fixing to the groove b _2, e ₂ parts of d ring c ₂ and f ₃ in the longitudinal direction, the simple There was a problem that the connection could not be performed, skill was required, and the connection work was dangerous because of the height.

On the other hand, in the retainer described in Japanese Utility Model Publication No. 5-32169, it is difficult for the connecting portion to come off during operation, but the distance between the adjacent vertical members j and p is generally only about 40 mm. Not only is it difficult to operate the fastener w, but also because the horizontal flange portions of the flanged ring m and the flanged ring r and the fastener w project inside the retainer, Since the flow path of the backwash gas ejected into the retainer is obstructed, there is a problem that the attached dust after the connecting portion is not sufficiently removed.

[0016]

A bag filter retainer according to the present invention is a bag filter retainer in which an upper unit retainer and a lower unit retainer, which are divided into at least two upper and lower parts, are connected to each other and connected to each other. The lower unit retainer is formed in a cage-like cylinder by fixing a plurality of vertical members with an annular cross member, and an upper unit retainer and a lower unit retainer adjacent to a lower end of the upper unit retainer and an upper end of the lower unit retainer. The upper and lower annular cross members are inserted into each other, and a substantially semicircular receiver having cuts formed therein to limit vertical movement faces the lower end of the upper unit retainer and the peripheral surface of the upper end of the lower unit retainer, respectively. And a concave portion that is elastically deformed to be fitted and held by press-fitting the annular cross member of the connection partner and that prevents lateral movement of these annular cross members. Teiza are those installed protruding on the inner side of each socket member.

[0017]

The lower unit retainer is inserted into the filter cloth, and the upper end of the lower unit retainer is held by a suitable holder while slightly protruding from the filter cloth. Then, the upper unit retainer is arranged close to a position slightly shifted from the center axis of the lower unit retainer such that the upper receiver of the upper unit retainer is located at a position directly opposite to the lower receiver of the lower unit retainer.
Next, slide the lower annular cross member of the lower unit retainer into the notch of the upper unit retainer and the upper annular cross member of the upper unit retainer into the notch of the lower unit retainer. By press-fitting the annular cross member into the concave portion of the upper fixed seat and the upper annular cross member into the concave portion of the lower fixed seat, the upper unit retainer 1 and the lower unit retainer 2 limit the vertical movement by the above-mentioned cuts. At the same time, the above-mentioned fixed seats are fitted and held in a state in which lateral movement is prevented, and are integrated.

[0018]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a bag filter retainer according to the present invention.

In FIG. 1, 1 is a divided upper unit retainer, and 2 is a lower unit retainer.

The upper unit retainer 1 includes a plurality of vertical members 1.
1 is welded to a plurality of upper annular cross members 12 and 13 to form a cage-shaped cylinder.

The lower unit retainer 2 is formed in a cage-like cylinder by welding a plurality of vertical members 21 to a plurality of lower annular cross members 22 and 23, similarly to the upper unit retainer 1.

An upper support 14 is fixed to the lower end of the upper unit retainer 1 by welding. This upper deposit 1
4 is an upper unit retainer 1 as shown in FIGS.
Is formed in a substantially semicircular band plate with respect to the lower end peripheral surface, and both end portions 15, 15 are bent inward.

As shown in FIG. 3, upper cuts 16 and 17 are formed at the upper and lower ends 15 and 15 in two upper and lower stages. The upper annular cross member 13 is inserted and arranged in the upper stage 16 of the upper cut. The lower step 17 of the upper cut is for inserting the lower annular cross member 23 when the upper unit retainer 1 and the lower unit retainer 2 are connected.

In the middle of the upper receiving member 14, an upper fixing seat 18 is arranged so as to protrude inward as shown in FIG. The inner end portion 18a of the upper fixed seat 18 is curved so as to be elastically deformable and has a recess formed therein.
3 are fitted. The outer end portion 18b of the upper fixing seat 18 is bent and disposed on the outer peripheral surface of the upper receiving member 14 through an insertion hole 19 formed in the upper receiving member 14, and the bent portion is fixed to the upper receiving member 14 by welding. Has been established.

At the upper end of the lower unit retainer 2, a lower receiving member 24 is fixed by welding at a position facing the upper receiving member 14.

As shown in FIGS. 1 and 2, both ends 25, 25 of the lower receiving member 24 are bent inward similarly to the upper receiving member 14, and the lower fixing seat 28 is formed in the middle.
Is provided.

The structure of the both ends 25 and the lower fixed seat 28 is also the same.
The lower end 2 is formed at both ends 25.
6, 27 are formed. The lower annular cross member 23 is inserted into the lower notch lower stage 27, and the upper annular cross member 13 is inserted into the lower notch upper stage 26 when the upper unit retainer 1 and the lower unit retainer 2 are connected. It is for.

Reference numeral 3 in FIG. 1 denotes a bottom cover welded to the lower end of the lower unit retainer 2.

Next, the means for connecting and disassembling the bag filter retainer according to the present invention having the above-described structure will be described.

In a bag filter device equipped with a filter cloth (not shown), first, the lower unit retainer 2 is inserted into the filter cloth, and the upper end of the lower unit retainer 2 is appropriately protruded from the filter cloth. Hold by the holder.

Then, the lower receiving member 2 of the lower unit retainer 2
4 and the upper receiving member 14 of the upper unit retainer 1
The upper unit retainer 1 is disposed close to a position slightly shifted from the center axis of the lower unit retainer 2 such that

Next, the lower annular cross member 23 is slid into the lower steps 17 and 17 of the upper cuts, and the upper annular cross member 13 is inserted into the upper steps 26 and 26 of the lower cuts, respectively. The material 23 is placed in the concave portion of the upper fixed seat 18,
By press-fitting the upper annular cross members 13 into the recesses of the lower fixed seat 28, the upper unit retainer 1 and the lower unit retainer 2 are fitted and integrated.

When the upper and lower unit retainers 1 and 2 are connected in this manner, the holder holding the upper end of the lower unit retainer 2 is removed, and the unitary retainer is inserted into the filter cloth. .

Also, at the time of disassembly, after the upper unit of the lower unit retainer 2 is pulled out from the filter cloth until the upper end of the lower unit retainer 2 is exposed, the upper unit of the lower unit retainer 2 is held.
If a tool is inserted into any one of the fixing members 28 and prying, the fitted annular cross members 13 and 23 can be easily separated from the concave portions of the upper and lower fixing seats 18 and 28 and can be easily disassembled.

As described above, in this example, both ends 1 of the upper
5, 15 and both ends 25, 25 of the lower receiving member 24, the cuts 16, 17, 26, 27 are provided in the upper and lower two stages, but the cuts 16, 27 are annular cross members. 13,2
It may be integrated with three.

Although the fixing seats 18 and 28 are welded one by one in the middle, the positions and numbers of the fixing seats and the fixing method are not limited to this example.

Further, the retainer has been described as being divided into upper and lower parts, but may be divided into three or more parts.

[0039]

As described above, according to the present invention, each of the divided unit retainers has a notch formed with a cut,
Since the fixed seat protrudes inside this receiving metal, insertion of the annular cross member into the cut limits vertical movement of the retainer,
By fitting the annular cross member into the concave portion of the fixed seat by elastic deformation, it is possible to prevent the retainer from moving in the lateral direction, and the divided retainers are firmly connected integrally,
This connection and disassembly work can be easily performed, and workability is good.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a schematic structure when a bag filter retainer according to the present invention is divided.

FIG. 2 is a cross-sectional view showing a schematic structure of a bag filter retainer according to the present invention when connected.

FIG. 3 is a sectional view taken on line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a side view showing a general structure of a conventional split-type bag filter retainer as a whole and at a tip end thereof.

FIG. 6 is a partial enlarged view of a conventional split-type bag filter retainer.

FIG. 7 is a partially enlarged view of a conventional split-type bag filter retainer.

FIG. 8 is a perspective view showing another example of the conventional split-type bag filter retainer.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 upper unit retainer 11 vertical member 12, 13 annular cross member 14 upper holder 16, 17 cut 18 upper and lower fixed seat 2 lower unit retainer 21 vertical member 22, 23 annular cross member 26, 27 cut 24 lower receiver 28 upper and lower Fixed seat

Claims (1)

(57) [Claims] 1. A bag filter retainer for interconnecting an upper unit retainer and a lower unit retainer which are divided into at least two upper and lower parts by abutting each other, wherein the upper unit retainer and the lower unit retainer are formed by connecting a plurality of vertical members to an annular cross member. Fixed to form a cage-shaped cylinder,
Cuts are formed at the lower end of the upper unit retainer and the upper end of the lower unit retainer to limit vertical movement by inserting upper and lower annular cross members of an adjacent upper unit retainer and lower unit retainer into each other. The received semi-circular receiver is the upper unit
On the lower end of the retainer and on the upper end of the lower unit retainer.
In addition to being provided facing each other , press-fit the annular cross member of the connection partner
By being, and fitted and held by elastic deformation, these rings
Fixed loci each having a recess to prevent lateral movement of Jo crossmember
A retainer for a bag filter, wherein the retainer protrudes from an inside of a receiver .