JP2008104985A - Structure for preventing water shortage in flow plate part of coating booth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for preventing a water shortage in a flow plate part of a coating booth capable of maintaining a water refilling effect for a long period of time by preventing the water shortage in an overflow plate or a water film shortage in an air suction port. <P>SOLUTION: A venturi-type coating booth 1 is prepared by flowing down washing water from a water channel 1 storing the washing water through the overflow plate 4 having an inclined surface. In the coating booth, round rods 5a, 5b bent in a waveform are juxtaposed in a direction of their alternating waveforms, downward bent parts 5c and upward bent parts 5d of the respective round rods which are alternately contact are overlapped, these overlapped parts are bound by rings 8, and a meshed wire gauze 5 is installed along the inclined surface of the overflow plate 4. The round rods 5a, 5b bent in the waveform are coated with nylon resin, fluororesin, or a visible light type photocatalyst. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flow plate portion water drainage prevention structure in a venturi type painting booth.

  Automotive paint booths typically design venturis with clean water wash water. As shown in FIG. 9, this wash water is stored in a water channel 1 provided with a partition plate 3 by a water supply pipe 2 to flow down the wash water through an overflow plate 4, and is provided at the lower end of the overflow plate 4. A water film for making gas-liquid contact with the air suction port 6 is made.

However, even in the case of the clean water, the unpainted paint is actually mixed, and the unpainted paint flowing through the overflow plate 4 grows and becomes a lump, which adheres to the overflow plate 4 and causes a water flow break or paint mist. The mist collecting efficiency is lowered due to the occurrence of water film breakage for separating and removing the paint mist in the air by bringing it into gas-liquid contact with the air suction port 6 containing air. In addition, although a method of blocking a lump of unattached paint floating by the partition plate 3 is used, the unattached paint floating in the water passes under the partition plate 3 and flows out to the overflow plate 4. There was a problem.
Japanese Patent Laid-Open No. 06-254454 JP 2002-273290 A

  It is an object of the present invention to provide a paint booth flow plate portion drainage prevention structure capable of preventing a water drainage at an overflow plate or a water film at an air suction port and maintaining a water replenishment effect for a long period of time.

  In order to achieve the above object, according to the present invention, there is provided a venturi-type paint booth according to claim 1, wherein the washing water is allowed to flow down from a water channel containing the washing water through an overflow plate having an inclined surface. In the wire mesh, the corrugated round bars are arranged side by side in a staggered direction, and the downward curved portion and the upward curved portion of each of the round bars alternately contacting each other are overlapped, and the overlapped portion is bound by a ring to form a mesh. Is installed along the inclined surface of the overflow plate.

  As described in claim 2, the round bar bent into a corrugated shape is coated with nylon resin, fluororesin or visible light photocatalyst.

  According to the present invention, the wire mesh installed along the inclined surface of the overflow plate has no sharp corners or burrs due to the mesh formed by bundling round bars bent into a corrugated shape with a ring. Therefore, the rehydration effect can be sustained for a long time. In addition, by coating a round bar bent into a waveform with nylon resin or fluororesin or visible light type photocatalyst, superhydrophilic, antifouling effect by water repellency and water purification effect are further added, and the water replenishment effect can be sustained for a long time In addition, the cleaning frequency can be prolonged.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In FIG. 1, 10 is a venturi type painting booth, and 11 shows a booth floor. The present invention is disposed at the lower part of the booth floor 11. That is, as shown in FIG. 2, reference numeral 1 denotes a water channel that contains the partition plate 3 and accommodates cleaning water, and the cleaning water is supplied through the water supply pipe 2. Reference numeral 4 denotes an overflow plate, which is formed with a water film 7 for allowing cleaning water flowing over from the water channel 1 to flow down and bringing the air suction port 6 at the lower end of the overflow plate 4 into gas-liquid contact.

  The present invention has the above-described structure in which a wire net 5 having a special form described below is installed along the inclined surface of the overflow plate 4.

  A first embodiment of a special form of wire mesh 5 will be described with reference to FIGS. The round bars 5a and 5b bent into a corrugated shape are arranged in parallel with the corrugated direction, and the downwardly bent portions 5c and the upwardly bent portions 5d of the round bars 5a and 5b that are alternately in contact with each other are overlapped. Thus, a rhombus mesh is formed. As shown in FIG. 5, the overlapping portion is bound by the ring 8, so that the back side D of the overlapping portion fixes the round bar 5 a and the ring 8, and the front side of the overlapping portion does not fix the round bar 5 b and the ring 8. To do. Thereby, it is possible to fit overflow plates having various shapes. It is desirable that the acute angle portion of the rhombus mesh be 45 ° and the obtuse angle portion be 135 °.

  A second embodiment of the special form of wire mesh 5 will be described with reference to FIG. In the wire mesh 5 of the first embodiment, the round bars 5a and 5b bent into a corrugated shape are coated 9 with nylon resin, fluororesin or visible light type photocatalyst.

  The wire mesh 5 may be disposed between the partition plate 3 of the water channel 1 and the overflow plate 4 in addition to being installed on the inclined surface of the overflow plate 4.

  In the first embodiment of the present invention, the wire mesh 5 installed along the inclined surface of the overflow plate 4 has no sharp corners or burrs due to the mesh formed by bundling round bars 5a and 5b bent into a corrugated shape with a ring 8. As shown in FIGS. 6 (a) and 6 (b), dirt on the unattached paint lump is less likely to adhere, and prevents water from running out of the overflow plate 4 and water film 7 from the air suction port 6, thereby prolonging the water replenishment effect. Sustainable for a period of time.

  In the second embodiment of the present invention, as in the first embodiment, there are no sharp corners or burrs in the mesh, and dirt of unattached paint lump hardly adheres. As shown in FIG. 7, the round bars 5a and 5b bent into a corrugated shape are coated with a nylon resin, a fluororesin, or a visible light type photocatalyst as shown in FIG. As a result, dirt of unattached paint lumps due to super hydrophilicity and water repellency becomes even more difficult to adhere, improving the water replenishment effect and prolonging the cleaning frequency.

  In particular, in the case where the round bars 5a and 5b bent into a corrugated shape are coated with a visible light type photocatalyst 9, the ultraviolet light and visible light are both absorbed, and the VOCs of dirt, bacteria and circulating water adhering to the surface by the light energy are absorbed. It decomposes molds, odors, etc. into water and carbon dioxide, and has the effects of water purification and environmental purification.

  Further, in the present invention, even if a large amount of dirt (a large lump of unattached paint) adheres to the wire mesh 5 by flowing the wash water through the wire mesh 5, the wash water is temporarily separated as shown in FIG. Due to the moderate inclination angle and three-dimensional structure of the lower wire mesh 5, the wash water flows obliquely and the left and right wash waters supplement the portion where water breakage has occurred, thus maintaining the water replenishment action.

  As described above, the present invention prevents the paint booth's flow plate portion from running out of water by using a special type of mesh installed on the overflow plate without modifying the conventional structure, and makes it possible to maintain the water replenishment effect for a long time and clean it. There is an advantage that the frequency can be prolonged.

Cross section of the entire painting booth 1 is an enlarged cross-sectional view taken along the arrow A in FIG. Plan view of wire mesh used in the present invention Side view of wire mesh used in the present invention Part C enlarged detail view of FIG. The figure which shows the flow state of the washing water by this invention Side view of a wire mesh coated with corrugated round bars with nylon resin, fluororesin or visible light photocatalyst The figure which shows the rehydration effect by this invention Sectional view showing conventional structure

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water channel 2 Water supply pipe 3 Partition plate 4 Overflow plate 5 Wire mesh 5a Round bar bent into corrugation 5b Round bar bent into corrugation 5c Bending part 5d Bending part 6 Air suction port 7 Water film 8 Ring 9 Coating 10 Coating booth 11 Booth floor

Claims (2)

  In the Venturi-type paint booth in which the washing water is allowed to flow down from the water channel containing the washing water through the overflow plate having the inclined surface, the round bars bent into the corrugations are arranged in parallel in a staggered direction. A painting booth characterized in that a downwardly bent portion and an upwardly bent portion of each round bar that is in contact with each other are overlapped, and the overlapped portion is bound by a ring and a mesh is formed along the inclined surface of the overflow plate. Flow plate water drainage prevention structure.   2. The flow plate portion drainage prevention structure of a painting booth according to claim 1, wherein the round bar bent into a corrugated shape is coated with nylon resin, fluororesin or visible light photocatalyst.

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