JP2941367B2 - Cleaning device for activated carbon impregnated lattice substrate - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for an activated carbon impregnated lattice-like substrate, and more particularly to a deodorizing filter for an air conditioner, comprising a filter substrate and activated carbon particles adhered to the filter substrate. The present invention relates to an apparatus for cleaning the lattice-like substrate after the activated carbon is impregnated.

[Prior Art] The applicant of the present application has proposed in Japanese Patent Application No. 1-258748 a filter comprising a lattice-like filter base and gas adsorbent (mainly activated carbon) particles adhered to the filter base. . This filter has a thickness of the substrate of about 15 mm or less, a plane area of one cell of the lattice of the substrate = about 0.20 to about 0.35 cm ² ,
The size of the gas adsorbent particles = about 20 to about 60 mesh, the amount of the gas adsorbent particles used per unit area of the substrate plane = about 40
0 to about 2000 g / m ^2, the filter aperture ratio = about 50 to about 80%,
Is satisfied.

In summary, this filter is activated carbon (gas adsorbent)
It differs from conventional filters in that the size of the particles is relatively large and the thickness of the filter is small. Therefore, special considerations different from those of the conventional product need to be taken with respect to handling of the filter substrate, impregnation of the activated carbon, and the like.

[Problems to be Solved by the Invention] Since the activated carbon impregnated lattice-like substrate (filter) to be treated by the present invention has a large particle size of activated carbon, activated carbon having a poor adhesion state tends to fall off. In particular, activated carbon protruding from both sides of the filter (periphery of the lattice opening of the base) is likely to fall off. This is very undesirable, for example, when the application is a deodorizing filter for an air conditioner. Therefore, it is necessary to sufficiently clean the activated carbon having poor adhesion and the activated carbon projecting from the surface at a stage before the filter is completed as a primary product.

The present invention has been made based on such a viewpoint,
It is an object of the present invention to provide an apparatus for cleaning a lattice-like substrate after activated carbon impregnation.

[Means for Solving the Problems] In order to achieve the above object, in the apparatus of the present invention, activated carbon is a pair of an inlet feed roller and an outlet feed roller for transporting a lattice-like substrate with an attached carbon, and the above both feed rollers A pair of rotating file belts provided between the pair and opposed to each other with the substrate interposed therebetween so as to contact the surfaces on both sides of the substrate, and a member for rotating the belt in a forward direction with respect to the transport direction of the substrate. , Is provided.

In a desirable mode, the file belt is stretched between a driving roller and a driven roller, the driving roller and the driven roller are provided so as to be relatively close to and separated from each other, and the driven roller is biased against the base. Is done. Further, an operation lever for bringing the driven roller closer to the driving roller is provided. Further, a vibrating sieving machine is further provided after the outlet roller pair. [Operation] According to the apparatus according to the present invention having the above configuration, the grid-like substrate to which activated carbon is attached is provided between the two feed roller pairs. Are polished on both sides in a state of being bridged by a rotating file belt pair. The file belt can be replaced by temporarily reducing the distance between the drive roller and the driven roller by lever operation.

[Embodiment] Structure and material of filter FIG. 2 is a plan view showing an example of a deodorizing filter 10 which is processed by the apparatus according to the present invention. This filter includes a filter base 12 having a lattice shape and gas adsorbent particles 14 adhered to the filter base 12.

The deodorizing filter 10 has an aperture ratio (in a plane parallel to the plane of FIG. 2) of about 50% to about 80%, and this value is obtained as a result of various conditions described later. Also filter 10
Has a thickness (in the direction perpendicular to the plane of FIG. 2) of 15 mm or less, preferably about 3 mm or more. This filter 10
2 differs from the conventional filter in that the size of the gas adsorbent particles 14 is relatively large and the thickness of the filter 10 is small as shown in FIG. These features are key to satisfying conditions such as low pressure loss, appropriate deodorizing ability, and long life as a deodorizing filter for an air conditioner.

The base 12 is made of a thin material such as paper, aluminum, and plastic. When paper is used as the material, the strength can be reinforced by impregnating with phenol resin or the like. Further, the base 12 may be subjected to a non-combustible treatment. Since the thickness of the base 12 is substantially the thickness of the present filter 10, it is about 15 mm or less, preferably 3 mm or more. This thickness is
0 is finally determined by being stored in the housing of the air conditioner.

In the illustrated example, the pattern shape of the lattice of the base 12 is a hexagonal so-called honeycomb shape, but the pattern shape may be any shape such as a rectangle and a triangle. However, the plane area (in a plane parallel to the plane of FIG. 2) of one cell 16 of the lattice is about 0.20 to about 0.35
the cm ^2. This numerical value substantially means the density of the partition wall 18 for supporting the gas adsorbent particles 14.

The gas adsorbent particles 14 are made of activated carbon, but other types such as impregnated activated carbon can also be used. In addition, a catalyst capable of catalytically oxidizing CO can be used together with a deodorant in order to cope with a source of CO generated in a room such as an oil stove. As such a catalyst, a gold / oxide catalyst (disclosed in Japanese Patent Application Laid-Open No. 60-238148, etc.) which does not become alive even when moisture is present is desirable. The size of the gas adsorbent particles 14 is about 20 to about 60 mesh, and the amount of the gas adsorbent particles 14 used per unit area of the substrate 12 is about 400.
- about 2000 g / m ^2.

As a binder for bonding the gas adsorbent particles 14 to the substrate 12, an adhesive is preferably used to prevent the particles from falling off. Known adhesives such as acrylic, natural rubber, synthetic rubber, and silicone can be used as the adhesive. However, in order to adhere strongly to the filter substrate so that the activated carbon does not fall off, it is necessary to use a highly concentrated adhesive. It is required that the agent be used and that its layer thickness be somewhat thick. Therefore, the adhesive liquid used has high viscosity (about 10-50 poise)
The application method must be based on a method that can obtain a large layer thickness.

FIG. 3 is a plan view showing an example of a whole system for manufacturing a deodorizing filter for an air conditioner incorporating the cleaning device according to the present invention.

At the entrance of the system, an unexpanded filter base,
That is, an introduction portion for introducing the filter base in a state where the lattice is crushed into the present system is formed. In this system, the unexpanded material block can be introduced and processed as it is, so that labor and cost in transporting and storing the material can be reduced.

In the introduction section, free roller conveyors (introduction machines) 22, 23
Are arranged in a direction parallel to the plane of FIG.
12 are introduced continuously. A stretching machine 24 is provided between the conveyors 22 and 23. The stretching machine 24 stretches the base by the action of moisture and heat, that is, opens the lattice. Subsequent to the conveyor 23, a pin conveyor 26 is provided, which transports the substrate by hooking pins on a grid of the expanded substrate.

Subsequent to the conveyor 26, an immersion machine 28 for supplying a high-viscosity adhesive to the substrate in the stretched state is provided. The dipping machine 28 is of a type in which the substrate 12 is forcibly dipped in a high-viscosity (about 10 to 50 poise) pressure-sensitive adhesive bath to form a thick pressure-sensitive adhesive layer over the entire area of the substrate. At this time, since the adhesive has high viscosity,
It is considered that a film is stretched in the lattice. Therefore, if the drying is performed as it is, the pressure loss of the completed filter increases, the deodorizing performance decreases, the service life shortens, and the like. In order to avoid this, in the present system, a blower 32 for removing excess adhesive by air is disposed after the dipping machine 28. Since the pressure-sensitive adhesive has a high viscosity, it is desirable that the wind speed of the air hitting the pressure-sensitive adhesive is considerably high (about 30 to 250 m / sec). After the blower 32, a pin conveyor 34 similar to the conveyor 26 is provided.
Hand over. Because of the configuration as described above, in the illustrated system, when using a new base material block,
The substrate material is manually introduced from the inlet side until the lattice at the tip of the substrate catches on the pin of the pin conveyor of the dryer 36.

The dryer 36 heats the substrate 12 to reduce the water content of the adhesive applied to the substrate to a predetermined amount. Thereby, a predetermined viscosity is given to the pressure-sensitive adhesive, and the smell of the solvent is blown away. Generally, the initial moisture content of the adhesive is about 70% by weight, and this is
It is reduced to 10% by weight or less, preferably to about 3% by weight. In addition, the thicker the pressure-sensitive adhesive coating layer, the more easily foaming occurs during the drying process.
-100 ° C.) for a long time (about 10-30 minutes).

After drying, the substrate 12 is cut to a predetermined size for a completed air conditioner filter. The substrate on which the pressure-sensitive adhesive has dried has considerable strength itself, so that cutting can be performed accurately. Further, cutting before the activated carbon is attached has an advantage of extending the life of the cutting blade. However, it is also possible to cut the substrate after the application of the activated carbon.

More specifically, the first cutting machine is provided at the outlet of the dryer 36.
38 is provided, which cuts the substrate 12 in a direction perpendicular to the longitudinal direction from the conveyor 22 to the dryer 36. Subsequently, a direction changing mechanism 44 is provided, and the base 12 cut by the cutting machine 38 is transferred from the roller conveyor 42 to a roller conveyor 46 in a transport direction perpendicular to the base. Conveyor
At the end of 46, a second cutting machine 48 is provided, which cuts the base 12 in a direction perpendicular to the longitudinal direction of the conveyor 46, and sets the base to the above-mentioned predetermined dimensions.

Subsequent to the second cutter 48, an impregnating machine 54 for adhering activated carbon to the substrate 12 having a predetermined size via the above-mentioned adhesive is arranged. The attaching machine 54 advances the base 12 by the vibrating conveyor mechanism constituting the bottom wall. On the side of the impregnating machine 54, an activated carbon supply device 52 for supplying activated carbon toward the base 12 so as to pour the impregnating machine 54 from above is disposed. At the rear of the impregnating machine 54, a sieving unit 56 for breaking a part of the activated carbon is installed.

At the outlet of the attaching machine 54, a belt conveyor 58 is disposed at right angles to the conveyor 44. At the end of the conveyor 58, a friction machine 62 for dropping a part of the activated carbon by a frictional action is installed, and thereafter, a vibration sieve 64 is installed.

The activated carbon impregnated on the substrate 12 includes one that is firmly fixed to the substrate and one that is weakly adhered to the substrate. Activated carbon that has weakly adhered may easily fall off due to subsequent contact, vibration, or the like, and may contaminate the environment. Therefore, it is desirable that the activated carbon be dropped off during the manufacturing process. The dropping method includes a method using an impact force of a vibration conveyor or the like, a method using a centrifugal force, a method using friction such as a brush or a coarse file, and the like. One or more of these methods can be arbitrarily selected. . In the illustrated system, the sieving unit 56 and the sieving machine 64 are moved by the impact force of the vibrating conveyor.
In addition, the friction machine 62 drops unnecessary activated carbon by the rotational frictional force of the file.

Subsequent to the sieving machine 64, a packing section 66 of a known mode is provided. The film substrate from which unnecessary activated carbon has been dropped is packed in a bag, cardboard or a combination thereof in a form suitable for shipment as a drop-off filter for a completed air conditioner. In addition, the periphery of the completed filter may be surrounded with a ventilation material such as a nonwoven fabric or a net using a means such as heat sealing to improve the appearance and quality.

Cleaning Device FIG. 1 is a schematic side view showing a main part of a friction device 62 in a cleaning device according to the present invention.

In the friction machine 62, the base 12 is
The sheet is conveyed by a driven roller 274, an exit side driving roller 276, and a driven roller 278. The substrate 16 is placed between both roller pairs.
Endless file belts 288 and 298 are disposed vertically above and below. The belt 288 is stretched between a driving roller 282 and a driven roller 286 that are pivotally supported at both ends of a length-adjustable frame mechanism 284, and similarly, the belt 298 is attached to both ends of a length-adjustable frame mechanism 294. Drive roller 292, driven roller supported
It is stretched between 296. Drive roller 282 is common frame 28
Driven by a motor 283 supported by 1, the drive roller 29
2 is driven by a motor 293 supported on a common frame 291.

Both belts 288 and 298 rotate in the direction of the arrow in FIG. As a result, the activated carbon projecting above and below the base 12 is scraped off by friction, and the vibration applied to the base at this time causes the weakly adhered activated carbon to separate from the substrate. The rotation direction of both belts 288 and 298 is set to the forward direction with respect to the transport direction of the base 12. If it is in the opposite direction, it is difficult for the base 12 to enter between the belts 288 and 298.

FIG. 4 is a front view showing the friction machine 62 excluding the file belts 288 and 298. Since the frame mechanisms 284 and 294 of the friction machine 62 have basically the same structure, only the lower mechanism 284 is described in detail with internal details shown in FIG. 4, and the upper mechanism 294 is omitted. I do.

As shown in FIG. 4, a beam 114 extends horizontally from the friction machine 62 and the column 112, and a driving roller 282 and a frame 281 for a motor 283 are fixed to the beam 114. On the other hand, the center of the support frame 122 of the driven roller 286
4 is extended and is telescopically inserted into a longitudinal bush 118 disposed vertically upward on the beam 114. A compression coil spring 126 is provided between the bush 118 and the frame 122 around the shaft 124.

A reinforcing plate 116 is also fixed to the beam 114, and a swing lever 132 is supported at this end. A coil spring 134 is attached to the lever 132, and the other end thereof is connected to a frame 122.
Is connected to the plate piece 128 attached to.

The frame 122 also has a guide plate 142 extending vertically downward. An elongated hole 144 is formed in the lower portion of the guide plate 142, and a pin 146 implanted in the reinforcing plate 116 is engaged with the elongated hole 144.

With the above-described structure, the driven roller 286 is urged toward the base 12 by the spring 126, so that good contact between the file belt 288 and the base 12 can be obtained (see FIG. 1). This urging force is regulated by a coil spring 134 provided between the lever 132 and the plate 128 and a guide plate 142 provided between the reinforcing plate 16 and the frame 122.

The lever 132 is used when exchanging the file belt 288. That is, when the lever 132 is turned clockwise in FIG. 4, the driven roller 286 is moved toward the drive roller 282 against the urging force of the spring 126. Accordingly, the tension of the file belt 288 is loosened, and the replacement thereof becomes easy.

FIG. 5 is a schematic side view showing, on an enlarged scale, a sieving machine 64 disposed immediately after the friction machine 62. The sieving machine 64 is an impregnating machine 54
The structure is basically the same as that of the sieve part 56, and the activated carbon is removed by the impact force of the vibrating conveyor.

In the center of the trough 302 of the sieve 64, a 10-mesh wire mesh 3
12 is provided, over which the substrate passes. Vibrators 306 similar to those of the attaching machine 54 are attached to both side walls 304 of the lower bulging portion of the trough 302, and the trough 302 itself is supported by a spring seat 308. The vibrator 306 has a built-in eccentric rotor, and vibrates the trough 302 by this rotation,
The wire mesh 312 functions as a vibrating conveyor for advancing the substrate.

Activated carbon debris generated by the friction machine 62 and activated carbon having a low adhesive force are reliably removed by the sifter 64. Therefore, inadvertent falling off of the activated carbon at the time of subsequent packing or at the time of use is prevented beforehand.

Although the present invention has been described in detail with reference to the preferred embodiments shown in the drawings, according to those skilled in the art to which the present invention belongs,
Various modifications may be made to the above embodiment within the spirit of the invention.

[Effect of the Invention] According to the cleaning device of the present invention, the activated carbon protruding above and below the substrate is scraped off by friction, and the weakly adhered activated carbon is separated from the substrate by the vibration applied to the substrate at this time. . By biasing the driven roller toward the base, the contact between the file belt and the base is improved. The provision of the operating lever facilitates replacement of the file belt. Furthermore, by arranging a vibrating sieve,
Activated carbon debris and weak activated carbon generated by friction of the file belt can be more reliably removed.

[Brief description of the drawings]

FIG. 1 is an enlarged schematic side view showing a main part of a cleaning device according to the present invention, that is, a friction machine. FIG. 2 is a plan view showing an example of a deodorizing filter processed by the apparatus according to the present invention. FIG. 3 is a plan view showing an entire example of a system for manufacturing a deodorizing filter for an air conditioner incorporating a cleaning device according to the present invention. FIG. 4 is a schematic front view showing an enlarged main part of the cleaning device according to the present invention, that is, a friction machine. FIG. 5 is a schematic side view showing the sieve immediately after the friction machine in an enlarged manner. 22, 23 ... Free roller conveyor, 24 ... Stretcher, 26 ...
... Pin conveyor, 28 ... Immersion machine, 32 ... Blow-off machine, 36 ...
... Dryer, 38 ... First cutting machine, 44 ... Direction change mechanism, 48
…… the second cutter, 52 …… Activated carbon feeder, 54 ……
62: Friction machine, 64: Sieve machine, 66: Packing unit, 132 ...
… Lever, 272, 274; 276, 278 …… Feed roller pair, 282,
292: Drive roller, 286, 296: Driven roller, 288, 29
8 ... Rasp belt.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Motoyuki Kotani 2-2-1 Toranomon, Minato-ku, Tokyo Inside Tobacco Inc. (72) Hiroaki Kurihara 2-2-1 Toranomon, Minato-ku, Tokyo Japan Tobacco Inc. (72) Inventor Michiharu Kobayashi 2-2-1 Toranomon, Minato-ku, Tokyo Japan Tobacco Inc. Examiner Kenichi Mori (56) References JP-A-4-227015 (JP, A (58) Fields surveyed (Int. Cl. ⁶ , DB name) B01D 53/04, 53/34 B01J 20/30

Claims (4)

(57) [Claims] 1. An inlet feed roller pair and an outlet feed roller pair for conveying a grid-like substrate to which activated carbon is attached, and said pair of feed rollers are provided between said pair of feed rollers and contact each surface on both sides of said substrate. A cleaning apparatus for an activated carbon-impregnated lattice-like substrate, comprising: a pair of rotating file belts facing each other across a substrate; and a member for rotating the belt in a forward direction with respect to a transport direction of the substrate. 2. The file belt is stretched between a driving roller and a driven roller, the driving roller and the driven roller are provided so as to be relatively close to and separated from each other, and the driven roller is attached to the base. The apparatus of claim 1, wherein the apparatus is powered. 3. An apparatus according to claim 2, further comprising an operation lever for moving said driven roller closer to said driving roller. 4. The apparatus according to claim 2, further comprising a vibrating sieve disposed following said pair of outlet rollers.