JP3109901U - Paint booth bag filter - Google Patents

Abstract

[PROBLEMS] To separate a bag filter and a frame, replace only the filter, and recycle the frame, and to put two in one case, reducing the work load of transportation, storage, and disposal. A bag filter for painting booths that can be used.
A bag filter in which a non-woven fabric made of a short fiber layer composed of a single layer or a plurality of layers is coated on one or both sides with a heat-fusible fiber sheet, and at least a part of the non-woven fabric is formed into a bag shape. A plurality of 1s were connected to each other separately from the frame and formed into a series, and the male and female cloth fasteners were attached to and detached from the frame by detaching them.
[Selection] Figure 1

Description

  The present invention relates to a bag filter for a painting booth for purifying the air supplied to the painting booth.

  The painting booth almost seals the work place where the painting robot automatically paints the painting object at the painting work position with the transfer device between the installation / removal position of the painting object and the painting work position. For example, Patent Document 1 discloses that the exhaust amount of the painting booth is changed by a command of a painting robot. In Document 2, in a facility with a flash-off zone that blows warm air on the coating film formed on the surface of the object to evaporate water and solvent from the coating film, it is introduced into the coating booth through a filter from the plenum chamber. A suction duct that sucks a part of the clean air that is drawn under the filter and sends it to the heating device, and flushes off the clean air heated by the heating device Which were provided with discharge duct for introducing the over emissions it has been proposed.

  However, the conventional painting facilities and processes mainly focus on improving the efficiency of the apparatus and process, and little is taken up about the cleaning of the air supplied at the time of painting and the filter for cleaning.

On the other hand, a bag filter formed in a bag shape is a filter for purifying air sucked by a compressor used in a blast furnace or the like (for example, patents), for air purification of air conditioning equipment (for example, see Patent Document 3). In particular, in the former, a bag filter is described in which the filter medium can be easily exchanged and the outer frame can be reused.
Japanese Patent Laid-Open No. 7-213966 JP-A-3-275162 JP-A-8-117527 JP-A-8-68399

However, any of the bag filters described above is provided for the general purpose of use of the bag filter, and is not used for cleaning the supply air in the painting booth. Moreover, only the filter can be replaced, the frame can be reused many times, the case dimensions can be changed freely, and two can be put in one case, reducing the work load of transportation, storage and disposal. It is the purpose.

  That is, in the present invention suitable for the above purpose, a single layer or a plurality of short fiber layers are laminated, a heat-fusible fiber sheet is coated on one side or both sides, and at least a part thereof is fused and bonded. The present invention is a coating booth bag filter in which a plurality of bag filters formed by forming a non-woven fabric into a bag shape are connected to each other so that the opening side edges of adjacent bag filters are connected in parallel to form a series structure. In addition, one of the cloth fasteners is attached to both outer edges of the series of bag filters described above, and the other cloth fastener provided on the outer side of the frame is attached to and detached from the frame to be removable. It is.

Here, the short fiber layer of the filter is composed of a mixture of high melting point fibers and heat-fusible conjugate fibers, and has a mass per unit area of 200 to 500 g / m ² , and the melting point of the high melting point fibers is lower than that of the heat-fusible conjugate fibers. It is useful for the fiber layer to be 50 ° C. higher than the melting point of the melting point component.

The heat-fusible conjugate fiber used has a side-by-side or core-sheath structure, and the melting point of the high melting point component constituting the conjugate fiber is 50 ° C. higher than the melting point of the low melting point component, and the low melting point Fibers having a component melting point in the range of 100 ° C to 180 ° C are preferred. Moreover, as a heat-fusible fiber sheet coated on the short fiber layer, the melting point is in the range of 100 to 180 ° C., preferably about the same as the melting point of the low melting point component of the composite fiber, and the basis weight is 10 to 100 g / it is preferred to use those in the range of m ^2.

  Since the above-described bag filter of the present invention has a separate filter and frame, the frame can be reused many times by replacing only the filter, and conventionally, only one can fit in one case because of the frame. There is an advantage that two can be put by facing each other in the case, and since there is no frame, it is possible to reduce the size of the case, it is lightweight, and the case size can be changed at any time It is also possible to increase the number of filters that can be stored in this way, which has a remarkable effect of reducing the burden of transportation, storage, and disposal. Moreover, since only the filter needs to be replaced at the time of replacement, the workability is good and there is an effect that waste can be reduced.

  Furthermore, it is possible to provide a bag filter that prevents separation of fibers by an adhesive effect due to partial fusion, is easy to handle with a flat and smooth surface, and has suitable characteristics for a painting booth.

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a bag filter according to the present invention as seen from the inflow surface side, and FIG. 2 is a view of the bag filter as seen from the outflow surface side.

  In these figures, reference numeral 1 denotes a bag filter, which is a non-woven fabric in which a short fiber layer is laminated in a single layer or a plurality of layers, a heat-fusible sheet is coated on one side or both sides, and at least a part thereof is fused and bonded. It is formed in a bag shape with openings 2 on the air inflow side, and a plurality of them, four in the figure, are formed in a series of structures in which side edges 2 'of the openings are connected to each other in a parallel state. Has been. As shown in FIG. 2, the above-described series of bag filters 1 are appropriately fitted with one cloth fastener 3 of male and female cloth fasteners on the outer edge, and when assembled, both sides of the frame 4 shown in FIG. It can be attached to and detached from the frame 4 by being engaged with and disengaged from the other fabric fastener 5 installed at the edge.

Here, the short fiber layer of the nonwoven fabric forming the bag filter 1 is a single layer or a laminate of a plurality of layers, preferably a mixed fiber layer of high melting point fibers and heat fusible fibers, particularly heat fusible conjugate fibers. Is used. Then, the above-described high-melting fibers, when the use of a short fiber layer consisting of the mixed fiber of heat-fusible conjugate fiber, a range basis weight weight of the fiber layer of ^{200g / m 2 ~500g / m 2} , and It is effective that the composition of the high melting point fiber is 40 to 85% by mass and the melting point of the high melting point fiber is 50 ° C. or higher than the melting point of the low melting point component of the heat-fusible composite fiber.

If the mass per unit area is less than 200 g / m ² , satisfactory filtration performance cannot be obtained, and even if it is satisfactory, the filtration life is shortened, which is not preferable.

On the other hand, if it exceeds 500 g / m ² , it is difficult to obtain a low initial pressure loss. Further, when the composition of the high melting point fiber is less than 40% by mass, that is, when the heat-fusible composite fiber exceeds 60% by mass, the bulkiness (thickness is difficult to obtain) is poor, and it is difficult to obtain a filter with low initial pressure loss. .

  On the contrary, when it exceeds 85 mass%, since there are few heat-fusible composite fibers, even if it obtains a bulky filter, it will lose shape immediately and will fall. Moreover, short fibers are likely to come off, which is not preferable.

  The high melting point fiber is a synthetic fiber such as nylon, polyester, polypropylene, etc., and the heat fusible fiber, especially the heat fusible composite fiber, has a core-sheath type and side-by-side type structure, for example, polyester resin, polyethylene resin. , A composite fiber composed of a high melting point component and a low melting point component of a thermoplastic resin such as a polypropylene resin or a polyamide resin is used.

  Specific examples include polyester fibers (melting point: about 250 ° C. to 270 ° C.) and low melting point polyester fibers (melting point: about 100 ° C. to 150 ° C.), ester / nylon composite fibers, polyester / polyethylene composite fibers, polypropylene / polyethylene. Examples include composite fibers, and in particular, composite fibers of high-melting polyester and low-melting polyester are most practical. In this case, the melting point of the high melting point component constituting the composite fiber is preferably 50 ° C. or higher than the melting point of the low melting point component, and the melting point of the low melting point component is preferably in the range of 100 ° C. to 180 ° C.

  When the melting point of the high melting point component is less than 50 ° C. than the melting point of the low melting point component, the high melting point fiber side is also softened at the time of bonding between the short fibers, and a desired nonwoven fabric cannot be obtained. Moreover, when the melting point of the low melting point component is less than 100 ° C., it is difficult from the viewpoint of heat resistance because the processing conditions for carrying out adhesion between fibers are difficult. When the melting point of the low melting point component exceeds 180 ° C., it affects the thermal characteristics of the high melting point fiber, and is not preferable because the filter characteristics fluctuate due to the bonding.

  The fineness of the heat-fusible conjugate fiber is preferably in the range of 1 to 10 dtex. If the fineness is less than 1 dtex, a sufficiently bulky filter having filtration performance cannot be obtained. On the other hand, when the fineness exceeds 10 dtex, the number of fibers is reduced and the inter-fiber adhesion point is reduced to obtain bulkiness, but a filter having desired filtration performance cannot be obtained. In order to obtain a bulky filter while maintaining the thickness, the thickness is preferably 15 mm to 30 mm. To ensure bulkiness in this range, in the case of a single layer, a high melting point fiber and a heat-fusible fiber In order to ensure the thickness and filtration performance of the mixed fiber, the fineness composition of the high melting point fiber is easy to achieve by the combination of the fineness and fineness, the fineness range is 10-30 dtex for the thick fiber, the fineness of the fine fiber Is in the range of 3 to 10 dtex, and can be obtained by adjusting the conditions in order to obtain a filter with low initial pressure loss and high filtration performance by combining fine and fine fineness.

  The thick fiber serves as a skeleton for increasing the bulk. If the fineness is less than 10 decitex, it is too thin to serve as a skeleton. On the other hand, if it exceeds 30 dtex, the number of components is small, and the filtration performance is deteriorated. The mixing ratio of thick and fine fibers is appropriately determined depending on the thickness and filtration performance. In the case of lamination, it is obtained by laminating these thick and thin high melting point fiber layers with a mixed fiber layer of thick high melting point fibers and heat-fusible fibers and thin high melting point fibers and heat fusible fibers. In laminating, the coarseness side is the coarse layer on the inflow side, and the fineness side is the dense layer on the outflow side. In order to ensure the thickness and filtration performance, the ratio of the thick and thin fiber layers may be determined, and the fineness range may be the same as in the case of a single layer. The lamination ratio of thick and fine fibers is appropriately determined depending on the thickness and filtration performance.

  Next, the heat-fusible fiber sheet to be coated on one side or both sides of the short fiber layer is bonded to the surface of the bulky short fiber layer, the surface is flat and smooth, and the fiber layer has It is intended to prevent short fibers from coming off, and its melting point is in the range of 100 ° C. to 180 ° C., preferably in order to enable treatment by a single heat treatment. If the melting point is less than 100 ° C., the treatment conditions for carrying out adhesion with the short fiber layer are difficult, and it is not preferable from the viewpoint of heat resistance. When the melting point exceeds 180 ° C., the characteristics of the surface of the short fiber layer change, and the fluctuation of the filter characteristics increases by performing the adhesion.

Basis weight mass of the heat-fusible fiber sheet is preferably in the range of ^{10g / m 2 ~100g / m 2} , although it is not impair the filtration performance is less than 10 g / m ^2, sufficient surface of the short fiber layer It is not preferable because it cannot be smoothly smoothed and the hair loss cannot be prevented sufficiently. If it exceeds 100 g / m ² , the surface of the short fiber layer can be made sufficiently smooth and the hair removal can be prevented sufficiently, but it becomes difficult to obtain a low initial pressure loss because the resistance of the surface on the outflow side increases.

  In order to smooth the surface of the short fiber layer and prevent the fibers from falling off, there are methods of adhering polyethylene split fibers to the surface of the short fiber layer or applying a resin binder, but the former has a smooth surface and prevents hair loss. Even if it is possible, it is difficult to obtain a filter with low initial pressure loss, and the latter is difficult to smooth the surface sufficiently, and there is also a problem in handling, and further, the process increases, resulting in an increase in cost. It is not preferable.

  On the other hand, the heat-fusible fiber sheet of the present invention solves these problems, achieves smoothness of the surface, prevention of hair loss and low initial pressure loss, and achieves filter suitability.

  FIG. 4 shows a state in which four bag filters according to the above-described configuration are used, and four cloth fasteners 3 attached to the outer edge of the bag filter are engaged with the cloth fastener 5 of the frame shown in FIG. Thus, the inflow side is set as the opening portion 2 and the bag portion is protruded to the outflow side, and the bag filter 1 and the frame body 4 are attached to and detached from the male and female cloth fasteners 3 and 5 as needed. The frame body 4 can be reused by replacing only the bag filter 1 at the time of replacement.

  That is, the bag filter 1 according to the present invention is different from the frame body 4. Therefore, in the conventional frame-attached bag filter, only one bag filter 1 can be stored in the case 6 as shown in FIG. In contrast, the present invention has the convenience of being able to accommodate two in the case 6 facing each other as shown in FIG.

  In addition, the case size of 61 cm × 33 cm × 64 cm has conventionally been used for storing together with the frame, for example, but the bag filter of the present invention has no frame and is a flexible bag. Since only the filter is used, two cases 6 having a size of 33 cm × 32 cm × 64 cm can be sufficiently used and stored.

  In addition, although this invention bag filter is used in order to clean the air supplied in the painting booth prior to inflow, it can of course be used not only in the painting booth but also in a device with the same effect. .

It is the perspective view which looked at the bag filter concerning the present invention from the inflow side. It is the front schematic diagram which looked at the bag filter from the outflow side. It is a front view of the frame which attaches a bag filter. It is the perspective view which showed the state which attached this invention bag filter to the frame from the inflow surface. It is a figure which shows the accommodation state of this invention bag filter. It is a figure which shows the accommodation state of the conventional bag filter.

Explanation of symbols

1: Bag filter 2: Bag filter opening 2 ': Opening edge of each bag filter 3, 5: Male and female cloth fasteners 4: Frame body 6: Case

Claims (5)

  A bag filter formed by laminating a single layer or a plurality of short fiber layers, covering one or both sides with a heat-fusible fiber sheet, and forming a non-woven fabric in which at least a part thereof is fused and bonded in a bag shape A coating booth bag filter characterized in that a plurality of a plurality of a plurality of side-by-side adjacent bag filters are connected to each other to form a continuous structure.   A painting booth which is attached to and detached from the frame body by attaching one of the cloth fasteners to both outer edges of the series of bag filters according to claim 1 and engaging and disengaging with the other cloth fastener provided outside the frame body. Bag filter. The short fiber layer is composed of a mixture of high-melting fiber and heat-fusible composite fiber, and the mass per unit area is 200 to 500 g / m ^2. The melting point of the high-melting fiber is higher than the melting point of the low-melting component of the heat-fusible composite fiber. The coating booth bag filter according to claim 1 or 2, wherein the fiber layer is a fiber layer higher by 50 ° C or more.   The heat-fusible conjugate fiber is of a side-by-side type or a core-sheath type, the melting point of the high melting point component constituting the conjugate fiber is 50 ° C. higher than the melting point of the low melting point component, and the melting point of the low melting point component is 100 ° C. to 180 ° C. The paint booth bag filter according to claim 1, 2 or 3, which is in the range of ° C. The melting point of the heat-fusible fiber sheet is in the range of 100 to 180 ° C, and the basis weight is in the range of 10 to 100 g / m ^2. The coating booth bag filter according to any one of claims 1 to 4.

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