JPH0516285B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shaped filter suitable for use in a dry dust collector.

[Conventional technology]

Figures 6 and 7 show cylindrical and flat filters in which highly flexible woven fabric or felt is used as the filter medium. If the gauge 2 has a ventilate 2a to hold the cylindrical shape from the differential pressure
is inserted inside. Further, in the case of the flat bag filter 3 shown in FIG. 7, a gauge 4 on which a holding material such as a spring 4a is mounted is inserted from the mouth 3a to maintain its shape.

On the other hand, FIGS. 8 and 9 show examples of molded filters constructed for the purpose of increasing the effective area of the filter as much as possible, and the molded filter 5 shown in FIG. The molded filter 7 shown in FIG. , as seen in Utility Application No. 161431/1987 filed by the present applicant, by molding a hard filter medium while bending it into a substantially L-shape, pleats 8 and 9 are formed on both the circumferential surface and the bottom surface, respectively. ... are installed in parallel to increase the filter area.

[Problem that the invention seeks to solve]

Among the filters configured as described above, the latter molded filters 5 and 7 have pleats 6,
The filter area is wide by 8 and 9, therefore,
It can exhibit excellent dust collection effects. However, in the case of filters made of pleated hard filter media, such as these molded filters 5 and 7, the end surfaces are treated with resin in advance, or the filters are placed in a mold or wooden frame to form a substantially cylindrical shape (when in use) as shown in the figure. Because it is shaped into a shape (shape) and cannot be folded, the whole thing is bulky and takes up a lot of space, making it extremely inconvenient to store, store, and transport. Filter frame 5 made of metal or resin
Since a and 7a are integrally attached, the presence of metal or resin may affect the incineration at the time of disposal, or if the ventilate is integrally formed as shown in Figure 6. However, there was a problem in that it was very uneconomical because the bench lily had to be disposed of along with it.

[Means for solving problems]

The present invention was developed in view of the above-mentioned points, and its purpose is to minimize the space taken up as a whole when not in use, such as for storage, preservation, or transportation. The object of the present invention is to provide a molded filter for a dust collector that can be folded into a small and flat shape and can be easily disposed of by incineration. By repeating mountain folds and valley folds in the longitudinal direction of the filter, which is formed into a substantially cylindrical shape using In addition, the peaks and valleys of the upper surface are inclined diagonally downward to the left and right, and the entire surface forms a stretchable pleated surface,
The filter frame into which the mouth of the filter is fitted is configured so that a holding material that is inserted into the inside of the filter to hold the filter in a slightly stretched state and a ventilator that blows dust-removed air into the inside of the filter are attached. .

〔Example〕

Hereinafter, preferred embodiments of the molded filter for a dust collector according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partially cutaway side view showing an embodiment of a dust collector using a molded filter according to the present invention. It is divided into two rooms on the left and right,
A dust suction port 15 is formed on the upper side surface of the dust collection hopper 14 connected to the lower part of the dust collection chamber 12.
A dust suction duct 16 is connected to 5. on the other hand,
An exhaust port 17 is formed on the upper side of the clean chamber 13, which is relatively smaller than the dust collection chamber 12 and formed vertically.
9 is connected. Further, in the figure, 20 indicates a fan motor, and 21 indicates an exhaust pipe.

Next, 22... are molded filters according to the present invention, which are each attached to the side surface of the vertical partition plate 11 in a horizontal direction toward the inside of the dust collection chamber 12. Filter 22
The mouth of the bench yuri 22T... attached to the mouth of the
Each of them is opened toward the clean room 13. Furthermore, 23 in the figure is a pulse jet dust remover, and a broach tube 24 of this dust remover 23 is connected to the clean chamber 13.
It is piped inside. Similarly, in the figure, reference numerals 25, . . . indicate jet ports formed in the broach tube 24, 26 a diaphragm valve, 27 a pilot valve, and 28 a header pipe.

Next, a specific configuration of the molded filter 22 according to the present invention will be explained based on the descriptions in FIGS. 2 to 4.

For example, by using a hard filter material such as heat-welded or resin-treated long fiber nonwoven fabric (spunbond), short fiber nonwoven fabric (needle felt), or dry/wet nonwoven fabric, the whole can be made into an abbreviated rectangular cross-section as shown in the figure. Molded filter 22 according to the present invention made in a bellows shape
In this case, a large number of chevron-shaped pleats 22a are successively formed by alternately repeating mountain folds and valley folds at regular intervals on each side of a filter body made into a substantially rectangular cylindrical shape. For the vertical partition plate 11, by fitting the gasket 22d sewn 22e on the mouth into the filter frame 22f attached to the partition plate 11, the V on the left and right sides of the upper surface is formed as shown in FIG.
The troughs 22b, 22b are attached so as to form downward slopes of 45 degrees. Also, in the figure, 2
2M and 22N are holding materials attached to the filter frame 22f, and when the molded filter 22 is attached to the filter frame 22f, the holding materials 22M and 22N are attached to the filter frame 22f.
is inserted into the inside of the molded filter 22 so that the entire molded filter 22 can be held horizontally in a slightly stretched state as shown in FIG. The bench turret 22T mentioned above is also attached.

In the figure, 22c is a lid piece 22g sewn to the tip opening of the molded filter 22, which is also made of the same filter material.

[Effect]

Since the molded filter for a dust collector according to the present invention has the configuration as described above, in a state before it is attached to the dust collector 10, that is, before the holding members 22M and 22N are inserted inside, the entire molded filter is shown in FIG. It can be folded thinly and made small.

In addition, by attaching each molded filter 22 to the filter frame 22f as shown in Fig. 2, the whole is held in a slightly stretched state by the holding members 22M and 22N, and the ventilator 22T is attached to the mouth. Attach it to the partition plate 11 as shown in Figure 1,
When the dust collector 10 is operated, the dust is drawn into the clean room 13 through the suction duct 19 by the rotation of the dust collection fan 18.
The suction force acting within each molded filter 22...
Since the dust is applied to the dust collection chamber 12 and the dust suction duct 16 through the suction air current, the dust is sucked into the dust collection chamber 12 from the dust suction duct 16 by riding on this suction airflow, where it is separated and collected by each molded filter 22 and cleaned. Only air is sucked from the clean chamber 13 through the suction duct 19 and exhausted to the outside air from the exhaust pipe 21.

On the other hand, in order to prevent clogging of the molded filter 22, the pulse jet dust remover 2 is operated at predetermined intervals.
3 is activated to blow compressed air into the inside of each molded filter 22 from each ventilly 22T to remove dust. As a result of this dust removal operation, dust DS (see Fig. 4) falls onto the upper surface of the lower molded filter 22. ) are each V-shaped valley part 22b inclined at 45 degrees,
22b as shown by the arrow,
Care is taken to prevent dust DS from accumulating on the upper surface of each molded filter 22.

Furthermore, when replacing the molded filter 22, by removing it from the filter frame 22f, the entire molded filter 22 can be flattened into the state shown in FIG. Since it can be folded, it can be easily disposed of or stored.

〔effect〕

As described above, according to the molded filter for a dust collector according to the present invention, the pleated surface in which mountain folds and valley folds are continuous is formed on the filter surface, which greatly increases the total area of the filter and provides excellent dust collection. In the present invention, the molded filter is made into a bellows shape that can be freely expanded and contracted in the longitudinal direction, so that the entire filter can be folded as thinly as possible, so that it can be used as a dust collector. If you fold it before installation, it won't take up as much space as conventional cylindrical molded filters, making it very convenient to store, store, and transport. It can be removed together with the frame,
Since the molded filter itself is not integrally formed with metal, etc., it has the advantage that it can be incinerated as is, making it extremely easy to dispose of it, which is extremely effective.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing an embodiment of a dust collector equipped with a molded filter according to the present invention, Fig. 2 is a partially cutaway side sectional view of the molded filter according to the present invention, and Fig. 3 is the same. A partially cutaway perspective view, Figure 4 is a front sectional view, Figure 5 is a side view showing the whole folded flat, Figures 6 and 7 are of conventional cylindrical and bag type filters. In the configuration diagram, the 8th
9 and 9 are perspective views showing a conventional molded filter. 22 is a molded filter, 22a is a pleat, 2
2M, 22N are holding materials, 22T is ventilly,
22f is the filter frame.

Claims (1)

[Claims] 1 By repeating mountain folds and valley folds in the longitudinal direction of the filter, which is formed into a substantially cylindrical shape using a hard filter medium, the peaks and valleys of the V-shaped cross section are formed in the longitudinal direction of the filter. The entire pleat surface is continuous in the direction, and the peaks and valleys on the upper surface are inclined diagonally downward to the left and right, and the pleat surface is stretchable.
The filter frame into which the mouth of the filter is fitted is equipped with a retainer that is inserted into the filter and holds the filter in a slightly stretched state, and a ventilator that blows dust-removed air into the filter. Molded filter for dust collector.