JP3667619B2 - Filter device for pulse jet dust collector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filter device used in a dust collector, and more specifically, to a pulse jet dust collector configured to blow off dust adhering to a filter by blowing compressed air into the inside of the filter. And a suitable filter device.
[0002]
[Prior art]
Regarding the filter device used in the pulse jet type dust collector, for example, as seen in JP-A-8-38839, a filter body made of filter paper as a consumable product and the inside of the filter body are reinforced. When the used filter is discarded, only the consumable filter body is discarded, and the non-consumable cage body and its parts are recycled. Some are configured to be used.
[0003]
FIG. 8 is an exploded perspective view illustrating the configuration of a conventional filter device for a pulse jet dust collector described in the above publication, in which 20 is formed into a cylindrical shape having a substantially star-shaped cross section using filter paper. The filter bodies 21 and 24 are upper and lower filter plates attached to the upper and lower ends of the filter body 20, and 22 is a cage body that is inserted into the filter body 20 to reinforce the cage body 22. The above-described upper surface filter plate 21, a venturi tube 23 for blowing compressed air attached to the plate 21 downward, and an internal filling body 22 ′ for reducing the internal volume of the filter body 20 are provided.
[0004]
In order to assemble the filter device using the filter body 20 and the cage body 22, first, the cage body 22 is inserted into the inside 20 T of the filter body 20, and the upper and lower filter plates 21 and 24 are attached to the filter body 20. It contacts the upper end port 20A and the lower end port 20B. Next, the tip screw portion 25B of the T-type bolt 25 mounted in the cage body 22 protrudes from the insertion hole of the bottom filter plate 24, and a nut 26 is fitted in this, and the T-type handle 25A is tightened and rotated. For example, a filter device for a pulse jet dust collector in which both plates 21 and 24 are pressed against both ends 20A and 20B of the filter body 20 and the cage body 22 is integrally attached to the inside 20T of the filter body 20 is provided. If the T-bolt 25 is unfastened and the nut 26 is removed, the entire filter device is divided into a consumable filter body 20, a non-consumable cage body 22, and its parts. It is structured to be able to.
[0005]
[Problems to be solved by the invention]
However, the conventional filter device configured as described above is in contact with the upper and lower ends 20A and 20B of the filter body 20 so as to sandwich the upper and lower filter plates 21 and 24 as described above, and then the packing ( Since the T-bolt 25 is tightened and rotated to be integrated with the T-bolt 25 interposed therebetween (not shown), the airtightness at both ends of the filter body 20 is incomplete. In particular, the filter paper of the filter body 20 As a result, the entire length of the filter plate expands and contracts by being affected by temperature, humidity and the like. As a result, a gap is formed between the filter plates 21 and 24 and the two end openings 20A and 20B that are pressed by tightening, and airtightness is lost. There has been a problem that uncontaminated airflow flows directly from the filter chamber (dust chamber) into the clean chamber.
[0006]
Furthermore, since the conventional filter device described above has a large number of parts, there is a problem that the operations of handling, assembling and disassembling are complicated, and each time the T-bolt 25 is used for assembling and disassembling. As a result, the assembly and disassembly operations have become more complicated, and there has been a problem that they cannot be used easily.
[0007]
Therefore, the technical problem of the present invention is to provide a filter device for a pulse jet type dust collector that is excellent in airtightness during assembly and has been devised so that the number of parts is small and the assembly and disassembly operations can be easily performed. It is to be.
[0008]
[Means for Solving the Problems]
In order to solve the above technical problem, a filter device for a pulse jet dust collector according to the present invention is a dust-removing air blown from a blow pipe into a partition plate that divides the interior of the fuselage into two upper and lower chambers, a clean chamber and a dust chamber. A consumable filter body formed in a cylindrical shape having a substantially star-shaped cross section using filter paper is provided in the fitting hole of the filter mounting plate provided along the bottom side of the partition plate. A filter device constituted by a non-consumable cage body that is inserted into the filter body and reinforced is fitted and attached from above, and dust collected in the filter body by dust collection operation is attached to the blow pipe. In the pulse jet type dust collector configured to be removed by dust removal air blown into the filter body through the vent hole from above,
The upper and lower ends of the filter body constituting the filter device are respectively provided with a top plate having a fitting opening and a bottom plate integrally formed with an inner filler projecting toward the inside of the filter body by a resin mold. while attaching coaxially integrally, on the upper end surface of the cage body, open the vent, and, filter plates compressed air for dedusting and communicates this vent is projected downward venturi tube to be blown Are integrally attached by a resin mold , the cage body is fitted into the inside of the filter body from the fitting hole of the upper face plate, and the filter plate and the upper face plate which are vertically overlapped by the fitting of the cage body. between, and, provided with a packing around the ventilation openings that the opening, the tightening of the screw the filter mounting plate Thus, it is configured to press horizontally on the bottom surface side of the partition plate, and by the pressing of the filter mounting plate, the packing provided in the vent of the filter mounting plate is provided in the ventilation hole provided in the partition plate. It is characterized in that the packing provided between the filter plate and the upper surface plate is pressed and adhered to the periphery of the bottom surface side so as to be pressed and sandwiched between these plates from above and below.
[0009]
According to the above means, the entire filter device for use in a pulse jet dust collector, and filter body consumables, the two members of the cage of non-consumable reinforcing insert inside the filter body On the other hand, a top plate provided with a fitting hole and a bottom plate provided with an internal filler are attached in advance to the upper and lower ends of the filter body, and a venturi tube is provided at the upper end of the cage body. Since the filter plate with projections is attached in advance, the filter device can be easily assembled and disassembled simply by inserting the cage body into the filter body or pulling it out. Te, a work for assembling the pulse jet dust collector assembly, the filter device is removed from the dust collector, and filter body consumables non-consumable On one of the work is divided into the cage body allows very easily be carried out, the cage-side overlapping up and down upon assembly filter plate and filter the gap between the top plate of the side, and, between the top plate and the partition plate It is possible to prevent the air leakage by closing the gap with the packing interposed between them according to the screw tightening operation .
[0010]
Further, according to the above means, and between the upper end opening and the top plate of the filter body, the respective between the filter body bottom plate which is integrally formed with the lower end opening and an internal filling of, concentric integrally resins Since it is molded, there is no gap between the upper end opening and the upper surface plate or between the lower end opening and the bottom plate due to deformation of the filter paper, etc., and a completely sealed filter device without air leakage is provided. Make it possible.
[0011]
Further, according to the above means, for joining the concentric integrally by resin molding an upper portion of the filter plate and the cage member, concentric with respect to the venturi also cage body are provided integrally with the filter plate It can be configured integrally, and not only can clean air filtered by the filter body be sent through the venturi tube to the clean chamber side without hindrance, but also compressed air for dust removal blown in through this venturi tube, It is possible to spray evenly to the surrounding filter body.
[0012]
Further according to the means described above, by press-contact of the filter mounting plate on the bottom side of the partition plate by clamping the screw, vent the packing provided around the vent filter mounting plate, provided in the partition plate of close contact with the periphery, and, a filter plate and top plate that overlaps vertically while interposing a gasket between the upper and lower pressurization clamping to order, which like packing of the partition plate and the filter mounting plate overlapping the upper and lower In addition to airtight communication between the vent hole and the vent hole, the air filter between the filter plate and the top plate is hermetically sealed to prevent air leakage between the vent hole and the vent hole and between the two plates. to enable.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Embodiments of a filter device for a pulse jet dust collector according to the present invention will be described below with reference to the drawings. FIG. 1 is a front sectional view of a pulse jet dust collector in which the present invention is implemented , and FIG. FIG. 3 and FIG. 4 are sectional views illustrating a state in which the filter device of the present invention is attached and a state in which the attachment is completed, and FIG. 5 is a front view of the filter body constituting the present invention. FIG. 6 is a front sectional view of the cage body, and FIG. 7 is a front sectional view for explaining the structure of the present invention. In each of the sectional views shown in FIG. 5 to FIG. A filter body 12 having a substantially star-shaped cross section (see FIGS. 1 to 4) is used, and 12 is a cage body that is inserted into the inside 11H of the filter body 11 to reinforce the filter body 10 according to the present invention. 1 to 4) It is those composed by a combination of Iruta body 11 and the cage 12.
[0014]
The filter body 11 has a large opening 11C in the center at the upper end of the filter cylinder 11A formed into a substantially star-shaped cylinder using filter paper, as shown in FIG. An upper surface plate 11B configured so that the outer peripheral edge becomes a ridge at the time of attachment is integrally attached by resin molding (resin mold), and an inner portion protruding toward the inside of the filter body 11 is provided at the lower end opening thereof. The bottom plate 11D integrally formed with the filler 11F is structured so as to be integrally and concentrically attached by the resin mold 11E. The entire filter body 11 is disposable as a consumable when the filter device is replaced. It is structured.
[0015]
On the other hand, the cage body 12 shown in FIG. 6 is formed in a generally bowl shape by a plurality of vertical rods 12A and ring rods 12A ′, while the upper end of the cage body 12 is compressed for dust removal. A synthetic resin filter plate 12B, in which a venturi tube 12D into which air is blown, protrudes downward and has a vent 12C communicating with the venturi tube 12D at the center, is also concentrically integrated by a resin mold 12E. This cage body 12 has a structure that is repeatedly used as a non-consumable item.
[0016]
The filter plate 12B and the venturi tube 12D are made of metal, and these are integrally or separately made by sheet metal processing or the like, and the upper end portion of the vertical rod 12A made of metal is also used as the filter plate 12B. The cage body 12 made of metal may be assembled by welding or concentrically with each other, and the selection is optional.
[0017]
In order to assemble the filter device 10 according to the present invention using the filter body 11 and the cage body 12 configured as described above, first, as shown in FIG. 7, the cage body 12 is passed through the insertion port 11C of the upper surface plate 11B. 11 is inserted between the filter plate 12B and the upper surface plate 11B, and the upper surface of the filter plate 12B is further connected to the air vent 12C. Assembling of the filter device 10 is completed by attaching a packing 13 that is also formed in a ring shape so as to surround .
[0018]
Filter device 10 assembled as described above, description be those attached et al are in Parusujietto dust collector as shown in FIGS. 1 to 4, below, the configuration of the pulse-jet dust collector with which such figures To do.
[0019]
In the drawings, reference numeral 1 denotes a body of a pulse jet type dust collector, 2 denotes a suction port for dust-containing air, 1F denotes an exhaust pipe, 3 denotes a partition plate that partitions the inside of the body 1 into two chambers, a dust chamber 1A and a clean chamber 1B, Is a dust suction fan provided in the fan chamber 4H in the clean chamber 1B, and 4M indicates the motor. Further, 1T is a dust bucket that can be pulled out freely. In FIGS. 3 and 4, 1D is a work opening opened on the side surface of the dust chamber 1A, and 1E is a cover plate that closes the opening 1D.
[0020]
In addition, 6 ... is a vent hole provided in the partition plate 3, 7 is a blow pipe for blowing dust removal air into each of the vent holes 6, 7H is a dust removing chamber, 8 and 8A are dust removing chambers. The header pipe and diaphragm valve which supply compressed air intermittently are shown. Further, 3A and 3B are a pair of left and right support frames provided on the bottom surface of the partition plate 3. The support frames 3A and 3B are spaced from each other by a mounting plate insertion passage 3H which will be described later. The supporting surfaces of 3A and 3B are configured to have a substantially L-shaped cross section so as to support the inserted mounting plate in a state where it is lifted from both sides. Further, these supporting frames 3A and 3B and the bottom surface of the partition plate 3 The upper and lower intervals are configured wider than the thickness of the entire filter mounting plate including the packing, plate, and guide edge described below.
[0021]
9 is the above-described filter mounting plate configured to be freely inserted into the space between the support frames 3A and 3B, that is, into the insertion passage 3H, and 9D is a filter insertion hole formed in the mounting plate 9. The filter device 10 according to the present invention assembled as shown in FIG. 7 is fitted into the fitting hole 9D from above.
[0022]
9A and 9A are the above-mentioned guide edges formed by bending the left and right side edges of the filter mounting plate 9 downward at a right angle. The filter mounting plate 9 has the bottom and outer surfaces of the guide edges 9A and 9A on the left and right sides. Guided by the L-shaped support frames 3A and 3B, it is structured to be inserted into and removed from the interval passage 3H between the support frames 3A and 3B. Further, 9B and 9B are rounded surfaces formed at the distal ends of both guide edges 9A and 9A, and 9E represents a bent piece bent upward at the root end of the filter mounting plate 9.
[0023]
Next, 3C is an inclined surface formed by inclining the tip ends of the support frames 3A and 3B upward, that is, toward the partition plate 3, and 5 is positioned on an extension line of the inclined surface 3C, and the inclined surface. It is a bracket provided with an inclined surface having the same angle as 3C (for example, around 30 degrees), and this bracket 5 is attached to the inner wall surface of the dust chamber 1A.
[0024]
The inclined surfaces 3C and brackets 5 of the support frames 3A and 3B configured as described above are provided on the left and right guide edges 9A of the filter mounting plate 9 inserted between the support frames 3A and 3B as shown in FIG. , 9A is guided and the tip side of the filter mounting plate 9 is pushed up to the upper surface side, while the tip round surface 9B hits the bracket 5 to stop its pushing, as shown in FIG. As described above, the vent holes 12C of the filter devices 10 are configured so as to coincide with the positions of the bottom holes of the vent holes 6.
[0025]
Further, 3D and 9C are screw holes formed in the respective root end portions of the partition plate 3 and the filter mounting plate 9, and when the insertion of the mounting plate 9 is stopped by the bracket 5, these screw holes 3D, 9C is also structured to be aligned together. As shown in FIG. 4, the tip of the butterfly screw 19 screwed into the screw hole 9C of the filter mounting plate 9 is screwed into the screw hole 3D of the partition plate 3. The filter mounting plate 9 is installed in a state where the entire filter mounting plate 9 is horizontal to the bottom surface side of the partition plate 3 so as to surround the vent 12C provided in the filter plate 12 of each filter device 10. 13, is pressed against the contact state囲Ri the bottom opening of the vent hole 6 disposed in the partition plate 3, configured such air is leakage does not occur from between which such vent holes 6 and vent 12C communicating ing.
[0026]
Further, when the thumbscrew 19 is tightened, the filter plate 12B and the upper surface plate 11B of the filter 10 that are vertically overlapped between the bottom surface of the partition plate 3 and the upper surface of the filter mounting plate 9 are sandwiched from above and below. In order to pressurize, the packing 14 (FIGS. 3, 4, and 7) interposed between the plates 12B and 11B is compressed to completely seal the gap between the plates 12B and 11B. , 11B can be reliably prevented from leaking air.
[0027]
【The invention's effect】
As described above, according to the filter device for a pulse jet dust collector according to the present invention, the entire filter device can be configured by using two members, a filter body which is a consumable item and a cage body which is a non-consumable item. Therefore, assembling and disassembling can be performed very easily, and it is possible to easily separate the consumables and non-consumables at the time of replacing the filter and to reuse the non-consumables. When assembling the assembled filter device to the pulse jet dust collector, the air vents on the partition plate and the vent hole on the filter plate side that are in communication are kept in close contact with each other to prevent air leakage, and by assembling the filter device Excellent airtightness that can reliably prevent air leakage from between the upper and lower filter plates and the top plate What comprising point coupled with, it is suitable for Makoto using a variety of Parusujietto dust collector.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing a configuration of a pulse jet dust collector in which a filter device according to the present invention is implemented.
FIG. 2 is an exploded perspective view showing a structure of a filter mounting portion.
FIG. 3 is a cross-sectional view illustrating a state before the filter device according to the present invention is attached to a partition plate of a pulse jet dust collector .
FIG. 4 is a cross-sectional view illustrating a state in which the filter device according to the present invention is completely attached to the partition plate side of the pulse jet dust collector .
FIG. 5 is a front sectional view of a filter body constituting the present invention.
FIG. 6 is a front sectional view of a cage body constituting the present invention.
FIG. 7 is a front sectional view illustrating the configuration of the filter device according to the present invention.
FIG. 8 is an exploded perspective view showing a configuration of a conventional filter device.
[Explanation of symbols]
1 The body of the pulse jet dust collector
1A Dust chamber
1B Clean room 3 Partition plate
6 Ventilation holes
7 Blow pipe
9 Filter mounting plate
9D Insertion hole 10 Filter device 11 Filter body 11B Top plate 11D Bottom plate
11E Resin mold 11F Internal filling body 12 Cage body 12B Filter plate
12C Vent 12D Venturi tube
12E Resin mold 13, 14 Packing
19 thumbscrew

Claims (1)

The partition plate that divides the inside of the machine into two upper and lower chambers, the clean room and the dust chamber, is provided with a vent hole for taking in the dust-removing air blown from the blow pipe, and the filter mounting plate is fitted along the bottom side of the partition plate. In the hole, a filter device constituted by a consumable filter body formed in a cylindrical shape with a substantially star-shaped cross section using filter paper and a non-consumable cage body inserted into the filter body for reinforcement , In the pulse jet type dust collector configured to be fitted and attached from above, and dust collected in the filter body by dust collection operation is removed by dust removal air blown from the blow pipe through the vent hole and into the filter body. ,
The upper and lower ends of the filter body constituting the filter device are respectively provided with a top plate having a fitting opening and a bottom plate integrally formed with an inner filler projecting toward the inside of the filter body by a resin mold. while attaching coaxially integrally, on the upper end surface of the cage body, open the vent, and, filter plates compressed air for dedusting and communicates this vent is projected downward venturi tube to be blown Are integrally attached by a resin mold , the cage body is fitted into the inside of the filter body from the fitting hole of the upper face plate, and the filter plate and the upper face plate which are vertically overlapped by the fitting of the cage body. between, and, provided with a packing around the ventilation openings that the opening, the tightening of the screw the filter mounting plate Thus, it is configured to press horizontally on the bottom surface side of the partition plate, and by the pressing of the filter mounting plate, the packing provided in the vent of the filter mounting plate is provided in the ventilation hole provided in the partition plate. A pulse jet characterized in that it is press-contacted around the bottom side and the packing provided between the filter plate and the top plate is pressed and sandwiched between these plates from above and below. Type dust collector filter device .

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