JPH0616808B2 - Bug regenerating type dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention is a bag-recovery type dust collecting system for collecting dust-containing air such as exhaust gas from various factories and buildings by using a bag. Regarding the device (bug filter).

(Prior Art) Generally, in a bag-recovery type dust collector, the inside of the dust collector main body is divided into a dust collecting chamber and a clean chamber, and the dust-containing air introduced into the dust collecting chamber is filtered and collected. A large number of bugs are provided, and the air cleaned by these bugs is conducted to the clean room and exhausted outside the machine, and the dust collected by the bugs is collected at appropriate times by backwash air or pulse jet air injection or vibration. With a configuration in which a bag replay mechanism for brushing off at the bottom of the dust chamber is provided, as a large number of bugs provided in the dust collection chamber, a cylindrical bag in which the filter cloth has a cylindrical shape, an envelope bag in which the filter cloth has a bag shape, and There are various other types such as cartridge type.

(Problems to be solved by the invention) By the way, there are various kinds of bugs in the dust collecting apparatus as described above. A cage or pad is required to prevent it from being crushed by wind pressure,
For this reason, the structure is complicated and the manufacturing is troublesome, and since the assembling in the dust collecting chamber is performed one by one, it takes a lot of time and labor, resulting in a high cost. Further, there is a problem that the filtration area per unit volume is small and the installation space of the device is large.

The present invention has been made in view of the above circumstances, and can be easily mechanized for manufacturing, can be easily assembled in a dust collecting chamber collectively, and has a very large filtration area per unit volume, and a pressure resistance. It is an object of the present invention to provide a compact and efficient pug regenerating type dust collecting apparatus at a low cost, which is excellent in that there is no need for a cage or pad as in the conventional case.

[Structure of Invention]

(Means for Solving the Problem) In order to achieve the above object, the present invention divides the inside of a dust collector into a dust collecting chamber and a clean chamber, and the dust-containing chamber introduced into the dust collecting chamber. A bag for filtering and collecting air is provided, and the air purified by this bag is conducted to the clean room and exhausted to the outside of the machine, while the collected dust of the bag is backwashed with air or pulse jet air. In a bug-recovery type dust collector equipped with a bug-recovery mechanism that blows off at the bottom of the dust-collection chamber at appropriate times by jetting, vibration, etc. To form a honeycomb structure having a large number of triangular cylinders arranged in an array by adhering or welding to each other and crushing the ends of the triangular cylinders of the honeycomb structure on the side of the dust collecting chamber into inverted T-shapes for adhesion. Or a hanika that is blocked by welding It is characterized by the use of a systematic bug.

(Operation) With the above configuration, since a honeycomb structure bug having a large number of triangular tube portions arranged in a row is used as a bug, it is very easy to automate the manufacturing as compared with a conventional bug made individually. As a result, it is possible to easily and collectively assemble the dust collecting chamber, and it is possible to reduce the cost.
In addition, since it has a large number of triangular tube parts adjacent to each other, the filtration area as a whole is very large, and each triangular tube part has an appropriate bending strength and is excellent in pressure resistance, eliminating the need for a cage or pad as in the past. A compact and efficient dust collection process becomes possible. In addition, since the dust collection chamber side ends of the large number of triangular tube portions of the honeycomb structure bag are crushed in an inverted T shape to be closed by adhesion or welding, the closing process is simple and reliable. The air resistance of the dust collection chamber side end surface of each of these triangular cylinders is reduced, and the flow of dust-containing air to the cavity adjacent to each of these triangular cylinders is very smooth, further improving the dust collection processing efficiency. You will be able to plan.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. First of all, Fig. 1 is a vertical sectional view of the whole, and Fig. 2 is II of Fig. 1.
It is a cross-sectional view taken along the line II. In the figure, reference numeral 1 denotes a device body (casing), and a bag mounting plate 2 which also functions as a partition plate is provided near the upper end inside the device body 1 so that the inside of the device body 1 is a lower dust collecting chamber D and an upper side. And a clean room E. A bag 3 to be described later is mounted in the dust collecting chamber D in a state of being suspended via the bag mounting plate 2. Then, the dust-containing air introduced from the lower dust inlet 4 into the dust collecting chamber D from an external dust source (not shown) is filtered and collected by the bag 3, and the purified air passes through the bag 3. It communicates with the clean room E, and is exhausted from the exhaust port 5 to the outside through an exhaust blower (not shown) outside the machine.
In addition, the upper clean room E is provided with a bug reproducing mechanism 6,
During the dust collecting operation, the backwashing air is blown into the bag 3 from the upper end at a proper time, and the dust collected by the bag 3 is blown off to perform the bag reproduction.

Here, the bug 3 is a round-shaped honeycomb structure bag that is wound in a roll shape using the honeycomb structure 7 having a large number of triangular tube portions 7a arranged. This manufacturing method will be described. First, as shown in FIG. 3, a zigzag bent mountain-shaped filter material sheet 9 is superposed on the flat-shaped filter material sheet 8, and the joints 9a which are the back surfaces of the valleys of the mountain-shaped filter material sheet 9 are formed. Is bonded to the flat filter material sheet 8 with an adhesive, or each joint portion 9a of the mountain-shaped filter material sheet 9 is welded to the flat filter material sheet 8 by hot melt or the like to arrange the plurality of triangular tube portions 7a in rows. The honeycomb structure 7 in the state is continuously formed in a long strip shape. The flat filter material sheet 8 and the ridge-shaped filter material sheet 9 use filter paper of about 80 g / m ² obtained by pressing polyester fiber coated with a binder with an iron (150 ° C.), but other suitable bending strength ( As long as it has a waist strength), a filter paper, a non-woven fabric, or the like, which is a common filter material for bugs, may be used.
The length of one side of the triangle of each triangular tube portion 7a of the honeycomb structure 7 is set to about 20 mm (which can be appropriately selected within the range of 10 to 100 mm).

The lower end (the end of the dust collecting chamber D side) of each triangular tubular portion 7a of the honeycomb structure 7 is crushed into an inverted T shape as shown by reference numeral 7b in FIG. 4 and is adhered by an adhesive material or welded by hot melt or the like. By closing, there is no honeycomb structure bug 3,
This is rolled into a round shape in the form of a long strip.

Such a round honeycomb-shaped bug 3 has the upper end first
As shown in FIGS. 2 and 2, the mounting plate 2 is mounted by being adhesively fitted into the opening 2a of the mounting plate 2 made of a relatively thick plywood or synthetic resin plate, and in that state, the mounting plate 2 is attached to the bracket inside the apparatus main body 1. It is fixed by being mounted on 1a via packing 10 and being pressed by a pressing member 11 from the upper side. The opening 2a of the mounting plate 2 is formed in conformity with the contour of the outer peripheral surface of the round honeycomb bug 3 wound in a roll shape, and the upper end of the honeycomb bug 3 does not have a gap in the opening 2a. Airtightly adhesively fitted.

In the case of the round-shaped honeycomb structure bag 3, by winding the honeycomb structure 7 in a roll shape, a substantially star-shaped cavity 12 having a cross section in the center of the winding is formed, and a triangular cross section is formed between the triangular tube portions 7a. A cavity 13 will be newly formed, and if these cavity portions 12 and 13 are left open at both upper and lower ends,
The dust-containing air passes straight through here and goes to the clean room E. For this reason, the upper ends (ends on the clean room E side) of the respective cavities 12 and 13 are completely closed and made flat by embedding the filling material 14 as shown in FIG. There is. As shown in FIG. 5, the filling method 14 is a large dish-shaped container in which a large number of triangular pyramid-shaped blocking preventing projections 15 (only five are shown in the drawing and others are omitted) are vertically fixed from the bottom surface, as shown in FIG. A thermoplastic resin melting agent such as a binder is accommodated as a filler 14 in a liquid surface 16 having a liquid surface height of about 10 mm, and the honeycomb structure 7 is wound in a roll shape from above and is turned upside down. Push it into the container 16. It should be noted that the same number of the blocking prevention projections 15 are provided upright in correspondence with the triangular tubular portions 7a so that they are fitted into all the triangular tubular portions 7a of the honeycomb structure 7 in a rolled state. There is. Then, the respective projections 15 are fitted into the respective triangular tube portions 7a of the honeycomb structure 7, and the respective triangular tube portions 7 are inserted.
The filler 14 is prevented from entering the a, and the filler 14 penetrates into the open ends of all the hollow cavities 12 having a substantially star-shaped cross section and the triangular cavities 13 having other cross-sections at other winding center portions to have a thickness of about 10 mm. It is filled and hardened, so that all of the cavities 12 and 13 are closed at once.

In this way, the circular honeycomb structure bug 3 in which the upper ends (ends on the clean room side) of the hollow portions 12 and 13 are closed flatly is adhesively fitted to the opening 2a in the mounting plate 2 as described above, and the mounting plate 2 is attached. At the same time, it is installed in the apparatus main body 1 in a suspended state.

The bug reproducing mechanism 6 includes an air introduction duct 17 that is rotatably penetrated through the center of the top plate of the apparatus body 1 and is connected to an external air supply source (not shown), and a bottom end of the air introduction duct 17. A rectangular box-shaped backwash air blowing nozzle 18 having an open lower surface, which is horizontally extended with its ends connected to each other, and this nozzle 1
8 is a rotary-moving type that is composed of a sliding contact plate 19 arranged in a brim shape at the lower end periphery of 8, and has a manual operation handle 20 on the upper protruding portion of the introduction duct 17, which a worker can manually operate. By rotating, the nozzle 18 along with the introduction duct 17 horizontally moves while sliding the sliding contact plate 19 around the nozzle 18 in sliding contact with the upper end surface of the round honeycomb structure bag 3 to supply the backwash air sent from the external air supply source. The honeycomb structure bag 3 has a structure in which it is successively fed into a large number of triangular tube portions 7a. The bug reproducing mechanism 6 may be configured to be automatically rotated by using a motor or the like, instead of being rotated manually.

Thus, in the bag regenerating type dust collecting apparatus having the above-mentioned structure, the dust-containing air introduced into the dust collecting chamber D from the lower introduction port 4 of the apparatus body 1 is released at the lower end of the round honeycomb structure bug 3. The filter medium sheets 8 and 9 are introduced into the hollow portions 12 and 13 and pass through the hollow portions 12 and 13 toward the adjacent triangular tube portions 7a. At that time, the filter material sheets 8 and 9 collect dust by filtration. The air purified by this is the triangular tube portion 7
The inside of a is connected to the upper clean room E, and from there, the exhaust port 5
More exhausted outside the machine via an exhaust blower or the like (not shown).

At the appropriate time during such filter dust collection operation, the backwashing air is sent from the supply source to the bug regenerating mechanism 6 while rotating it. Then, the backwash air is blown into the triangular tubular portion 7a of the round honeycomb structure bag 3 in sequence from the nozzle 18 surrounded by the sliding contact plate 19, and the filter sheet 8 of the triangular tubular portion 7a of the bag 3 is blown. , 9 parts of collected dust are blown off to blow out. In this way, it is possible to continuously filter and collect dust-containing air.

Here, since the above-mentioned bug 3 uses a honeycomb structure bug having a large number of triangular tube portions arranged in a row, it is possible to easily automate the production of the bug 3 as compared with a conventional bug that is made one by one. At the same time, the assembling to the dust collecting chamber D can be easily performed at once, and the cost can be reduced. In addition, the closing process of the lower end of each triangular tube portion 7a of the honeycomb structure bag 3 and the closing process of the upper end of each of the hollow portions 12 and 13 adjacent thereto are easy and simple. Further, since the honeycomb structure bag 3 has a large number of triangular tubular portions adjacent to each other, the filtration area is very large as a whole, and each triangular tubular portion has an appropriate bending strength and is excellent in pressure resistance. Alternatively, the need for pads is eliminated, and compact and efficient dust collection processing becomes possible.

In addition, since the lower end of each triangular tube portion 7 of the round honeycomb bag 3 wound in a roll shape is crushed into an inverted T shape to close and seal, the inside of each hollow portion 12 and 13 is closed. Dust-containing air can smoothly enter from below. On the contrary, since the upper ends of the cavities 12 and 13 are flatly closed by the filling material 14, the sliding contact plate 1 of the bag reproducing mechanism 6 is attached to the upper surface thereof.
9 smoothly slides to effectively guide the backwash air from the nozzle 18 into each triangular tube portion 7a.

Next, some other embodiments of the present invention will be described.

First, FIGS. 6 and 7 show an example of a rectangular honeycomb structure bug 3A in which the long-striped honeycomb structure 7 manufactured in the same manner as described above is cut into strips having an appropriate length and laminated. Also in this case, the lower end of each triangular tube portion 7a (the end on the dust collecting chamber D side)
Is squeezed into an inverted T-shape and adhered by an adhesive material or welded by hot melt or the like to be closed. Further, the upper end (the end on the clean room E side) of the triangular cavity 13 formed between the triangular tube portions 7a is reverse to the same as the lower end of each triangular tube portion 7a without filling the filling material as in the above embodiment. It is crushed into a T-shape and adhered or welded to close it. This has the advantage that the pulse jet air from the pulse-type bag reproduction mechanism 6A arranged above it can be efficiently and smoothly blown into each triangular tube portion 7a. The pulse type bug reproduction mechanism 6A
Is the header 21 and the diaphragm 22
A plurality of supply pipes 23 that are horizontally introduced into the clean room E through a plurality of them, and a large number of downwardly provided pulse jet air ejection nozzles 24 on the lower surface of each of the supply pipes 23.
It is configured. The other structure is substantially the same as that of the above embodiment. However, even with this, the same effect as the above can be obtained.

8 and 9, the long-striped honeycomb structure 7 manufactured in the same manner as described above is cut into strips having an appropriate length, and the lower ends (collections) of the triangular tubular portions 7a are cut. Dust chamber D
The side ends) are crushed in an inverted T shape and adhered or welded to be closed to form a large number of independent strip-shaped honeycomb structure bugs 3B, and these strip-shaped honeycomb structure bugs 3B are parallel to each other without being stacked. In this example, each mounting plate 2 is attached by adhesive fitting to each other, and in this case, the mounting plate 2 has a plurality of saw-shaped openings 2b corresponding to the strip-shaped honeycomb structure bugs 3B.
Are formed. Further, the bug reproducing mechanism 6B arranged above it has a long flexible air introduction duct 25 provided so as to penetrate the side plate portion of the apparatus main body 1 and be connected to an external air supply source (not shown). A rectangular box-shaped backwash air blowing nozzle 26 having an open lower surface, which is horizontally arranged by connecting a base end portion to the tip end thereof, and a sliding contact plate arranged in a brim shape at the lower end peripheral edge of the nozzle 26. 27, a screw feed screw rod 28 for horizontally moving the nozzle 26 in parallel, and a rotation driving motor 29 for moving the nozzle 26. The nozzle 26 is driven by the screw rod 28 by the rotation driving of the motor 29. Are screw-fed, and the back surface of the mounting plate 2 is moved back and forth in the left-right direction in the drawing, and the backwash air sent through the introduction duct 25 is supplied to the triangular tubular portion 7 of each strip-shaped honeycomb bug 3B.
It is configured so that it is sequentially sent to a. The other structure is substantially the same as that of the above embodiment. However, even with this, substantially the same operational effects as described above can be obtained.

10 and 11 show an example of a horizontal dust collector. In this case, the long strip honeycomb structure 7 manufactured in the same manner as above is cut into strips of appropriate length, and One end (the end of the dust collecting chamber D side) of each triangular tube portion 7a is crushed in an inverted T shape and adhered or welded to close it, thereby making a large number of independent strip-shaped honeycomb structure bugs 3C. The honeycomb-shaped bugs 3C are attached to the mounting plate 2 by being adhesively fitted to each other with a parallel interval therebetween, and are mounted in the apparatus main body 1 sideways. Further, the bug reproducing mechanism 6C of the strip-shaped honeycomb structure bug 3C arranged laterally is of a vibration type, and the mounting plate 2 is mounted on the apparatus main body 1 via a vibration-proof plate 30 such as thick rubber and the mounting thereof. Board 2
A vibrator 32 is provided on the anti-bug side through the frame 31. The vibration of the vibrator 32 is transmitted to each strip-shaped honeycomb structure bug 3C, and the collected dust is shaken off by the vibration.

The present invention is not limited to the above-described embodiments, but may be, for example, the various honeycomb structure bugs 3, 3A, 3 described above.
The combination of B, 3C and the bug regenerating mechanism 6, 6A, 6B, 6C may be appropriately selected and changed, and the dust collecting chamber D of each triangular tube portion 7a of the honeycomb structure bugs 3, 3A, 3B, 3C.
The closing means of the side end and the ends of the hollow portions 12 and 13 on the side of the clean room E can be appropriately changed.

〔The invention's effect〕

Since the present invention is as described above, since the honeycomb structure bag having a large number of triangular tube portions arranged in a row is used as the bag, its fabrication is easy to mechanize, and the bag is not easily attached to the dust collecting chamber. It can be done easily and cost can be reduced.
Also, since there are many triangular tube parts adjacent to each other, the filtration area as a whole is very large, and each triangular tube part has an appropriate bending strength and excellent pressure resistance, eliminating the need for a gate or pad as in the past. The compact, efficient dust collection process makes it a very practical bag-recovery type dust collection device. Further, since the end portions of the plurality of triangular tube portions of the above-mentioned honeycomb structure bag on the dust collecting chamber side are respectively crushed in an inverted T shape and closed by adhesion or welding, the closing process is simple and reliable, and The air resistance of the end surface of each triangular tube on the dust collection chamber side is reduced, and the flow of dust-containing air into the cavity adjacent to each triangular tube is very smooth, further improving the dust collection processing efficiency. The effect is obtained.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a lateral sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a honeycomb. Fig. 4 is a perspective view of the structure, Fig. 4 is a perspective view of a part of the honeycomb structure bag which is closed at its end portion, and Fig. 5 is a perspective view showing a closing means for filling the hollow portion of the honeycomb structure with a filling material. Is a cross-sectional view showing another embodiment of the present invention, FIG. 7 is a vertical cross-sectional view of the above-mentioned embodiment, FIG. 8 is a cross-sectional view showing a further embodiment of the present invention, and FIG. An example vertical sectional view, FIG. 10 is a vertical sectional view showing still another embodiment of the present invention, and FIG. 11 is a plan view of a honeycomb structure bag and a mounting plate of the same embodiment. 1 ... Device body, D ... Dust collection chamber, E ... Clean room, 3, 3
A, 3B, 3C ... Honeycomb structure bug, 6, 6A, 6
B, 6C ... Bug reproducing apparatus, 7 ... Honeycomb structure, 7
a: triangular tube portion, 7b: inverted T-shaped closed portion, 8: flat filter medium sheet, 9: chevron filter medium sheet, 12, 13: cavity, 14: packing.

Claims (1)

[Claims] 1. A main body of the dust collecting device is divided into a dust collecting chamber and a clean chamber.
Filtered collection of dust-laden air that is configured and introduced into the dust collection chamber
Air that has been cleaned by this bug by providing a dust bug
Communicates with the clean room to exhaust the air to the outside of the machine, and
Backwash air or pulse jet air
-When sprayed or shaken, it is timely washed off to the bottom of the dust collection chamber.
A bug-recovery dust collector equipped with a bug-recovery mechanism
Then, as the above-mentioned bug, fold it into a zigzag shape with a flat filter sheet.
A large number of curved Yamagata filter sheets are bonded or welded to each other.
A honeycomb structure having the triangular tube parts of
And the end of each triangular tube of the honeycomb structure on the side of the dust collection chamber.
Each part is crushed into an inverted T shape and closed by adhesion or welding.
Characterized by the use of closed honeycomb structure bugs
Bag reclaim type dust collector.