JP4848475B1 - Paint debris processing equipment - Google Patents

Abstract

Disclosed is a paint debris treatment apparatus that can efficiently purify water to be treated containing paint debris.
A paint debris treatment apparatus 10 includes an inflow tank 11 to which water to be treated containing paint debris is supplied, a dredge member 12, a running water guide plate 13 disposed below the dredge member 12, and a treatment tank 14. And a sludge carry-out conveyor 15, a filter mechanism 16, and the like. The eaves member 12 has a first end portion 31 located below the outflow port 20 and a second end portion 32 located on the side far from the outflow port 20. The flange member 12 is disposed in an inclined posture so as to form an angle θ with respect to the horizontal plane A so that the second end portion 32 is higher than the first end portion 31. Further, the eaves member 12 has upper edges 25 and 26 for overflowing the water to be treated. Slits 52 and 53 for causing underflow are formed between the lower edges 50 and 51 of the gutter member 12 and the running water guide plate 13. The running water guide plate 13 has inclined surfaces 13b and 13c whose tips 45 and 46 are lowered.
[Selection] Figure 1

Description

  The present invention relates to a paint debris treatment apparatus for treating paint debris (paint sludge) discharged from a painting booth or the like.

  When performing painting work using a spray nozzle or the like, a painting booth is used to prevent the working environment and surrounding environment from deteriorating. For example, in the Venturi booth type painting booth disclosed in Patent Document 1, air containing paint mist is sucked into the swirl chamber by an exhaust fan, and the paint mist is separated from the air flow by the centrifugal force of the swirl chamber. Mist is collected by colliding with the water film. The water containing the collected paint mist is returned to the treatment tank from the underwater duct and reused.

  On the other hand, in the water booth type painting booth disclosed in Patent Document 2, a water curtain is formed by flowing water pumped up by a pump along a water flow plate, and a paint mist is brought into contact with the water curtain. The paint mist is washed away. Moreover, it is comprised so that the paint mist which was not able to be collected with the said water curtain is dropped in water by ejecting shower water from the shower nozzle arrange | positioned at the back side of the said water flow board.

JP 2002-273292 A Japanese Patent No. 3770484

  The paint mist collected at the painting booth falls into the treatment tank together with water and agglomerates to form paint residue (paint sludge) in the treatment tank. The paint residue floats on the surface of the water or settles in the treatment tank, and accumulates in the treatment tank. Since the conventional painting booth does not have a mechanism for purifying the water in the treatment tank, the worker periodically removes the paint residue manually. But even with regular cleaning, dirty water won't become clean unless it is replaced. For this reason, the paint residue gradually accumulates in the treatment tank, and the paint residue is hard to be removed and becomes a cause of dirt, for example, solidifies near the bottom or water surface of the treatment tank.

  Therefore, it has been considered that the paint residue in the treatment tank is conveyed outside the treatment tank by a sludge carry-out conveyor. However, a large amount of water to be treated sent from a painting booth or the like is vigorously discharged from the supply pipe into the treatment tank, so that the water to be treated is vigorously stirred in the treatment tank. For this reason, since the paint residue diffuses into the water, the paint residue in the water to be treated cannot be efficiently discharged by the sludge carry-out conveyor. For this reason, a large amount of paint debris stays in the treatment tank. For example, when the treatment equipment is stopped for a long time, such as at night or on holidays, a large amount of paint debris settles on the bottom of the treatment tank or adheres to the inner wall of the treatment tank. Problems such as corruption.

  Accordingly, an object of the present invention is to provide a paint debris treatment apparatus capable of efficiently purifying water to be treated mixed with paint debris.

  The paint debris treatment apparatus of the present invention includes an inflow tank to which water to be treated containing paint debris is supplied, a first end located near the outflow port of the inflow tank, and a first end located on the side far from the outflow port. And a pair of side walls having an upper edge that is disposed in an inclined posture so that the second end is higher than the first end and from which water to be treated can overflow. An eaves member, a flowing water guide plate having a pair of inclined surfaces that are disposed below the eaves member and receive the treated water overflowing from the upper edge of each eaves member, and the lower edges of the pair of side walls, A slit that is formed between the upper surface of the flowing water guide plate and that causes an underflow toward the inclined surfaces in the treated water that flows through the eaves member, and a treatment that contains the treated water that flows down through the inclined surfaces. Placed in the tank and the treatment tank A sludge carry-out conveyor having an upper portion that moves along the water surface of the treatment tank and a lower portion that moves along the bottom surface of the treatment tank, and a filter mechanism that filters the treated water that has flowed into the treatment tank It is equipped with.

  In one embodiment of the present invention, the flow guide plate has an upstream end located near the outflow port and a downstream end located far from the outflow port. A side end portion is disposed below the flange member in an inclined posture so as to be higher than the upstream end portion. The sludge carry-out conveyor has a conveyor drive mechanism that can be switched between a first direction and a second direction, and the water surface is moved by the upper portion of the conveyor when the conveyor moves in the first direction. The nearby paint debris is conveyed toward the sludge discharge section, and when the conveyor moves in the second direction, the paint debris present on the bottom surface of the treatment tank is directed toward the sludge discharge section by the lower portion of the conveyor. Are transported.

  According to this invention, the to-be-processed water which flows through a gutter member overflows from the upper edge of a pair of side wall of a gutter member. The overflowed water to be treated falls on the inclined surfaces of the running water guide plate in a state where there is little variation in the flow rate of each part in the longitudinal direction of the eaves member. For this reason, the water to be treated that flows along each inclined surface flows into a wide area in the treatment tank without being concentrated in one place, and the water to be treated is vigorously stirred in the treatment tank or the water surface is greatly swung. Can be avoided. For this reason, the paint residue is likely to float on the water surface of the water to be treated, and the paint residue floating near the water surface can be scraped out efficiently by the upper portion of the sludge carry-out conveyor that moves along the water surface.

  In addition, by causing an underflow in which the water to be treated always flows from the slit in the vicinity of the lower part of the dredging member, it is possible to discharge the paint residue that is about to settle inside the dredging member, and the water to be treated in the upper part of the dredging member. By overflowing, the paint dust floating in the water to be treated can be poured out of the gutter member. For this reason, it is possible to prevent paint dust from adhering to the inside of the collar member.

The front view of the paint debris processing apparatus which concerns on one Embodiment of this invention. FIG. 2 is a plan view of the paint debris treatment apparatus shown in FIG. 1. Sectional drawing which shows typically the cross section which follows the F3-F3 line | wire in FIG. The perspective view which looked at a part of coating-materials processing apparatus shown by FIG. 1 from diagonally upward. The perspective view which looked at a part of coating-materials processing apparatus shown by FIG. 1 from upper direction of the front side.

Hereinafter, a paint scum treatment apparatus according to one embodiment of the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is a front view of the paint debris treatment apparatus 10, and FIG. 2 is a plan view of the paint debris treatment apparatus 10. The paint debris treatment apparatus 10 includes an inflow tank (cushion tank) 11, a trough member 12, a running water guide plate 13 disposed below the trough member 12, a treatment tank 14, a sludge carry-out conveyor 15, and a filter mechanism 16. And a clean tank 17 for storing the water filtered by the filter mechanism 16.

  To the inflow tank 11, water to be treated W <b> 1 containing paint residue is supplied by a supply pipe 18 from a painting facility (not shown) such as a painting booth. The inflow tank 11 has an outlet 20 for allowing the treated water W <b> 1 to flow out toward the dredging member 12. The outlet 20 is constituted by a pair of plate members 20a and 20b having a certain height H1 (shown in FIG. 1) and a length L1, and the water to be treated in the inflow tank 11 is elevated toward the dredging member 12. It flows out with a difference (head).

  FIG. 3 is a cross-sectional view schematically showing the paint debris treatment apparatus 10. FIGS. 4 and 5 are perspective views of a part of the paint debris treatment apparatus 10 as viewed from above. The treated water W <b> 1 supplied to the inflow tank 11 exits from the outlet 20 and flows into the dredging member 12. The eaves member 12 includes a pair of side walls 12a and 12b arranged in parallel to each other. The side walls 12a and 12b are made of a sheet metal having corrosion resistance such as a stainless steel plate. On the upper edges 25 and 26 of the side walls 12a and 12b, guide portions 25a and 26a bent outward are formed.

  The eaves member 12 has a shape that is long in the horizontal direction, and is located on the first end portion 31 located on one side in the longitudinal direction (near the lower side of the outlet 20) and on the other side in the longitudinal direction (the side far from the outlet 25). Second end 32.

  The flange member 12 is disposed in an inclined posture so as to form an angle θ with respect to the horizontal plane A (shown in FIG. 1) so that the second end portion 32 is higher than the first end portion 31. . A water blocking wall 33 is provided at the second end portion 32. The water blocking wall 33 protrudes upward by a height H2 (shown in FIG. 1) from the upper edges 25, 26 of the side walls 12a, 12b. The inclination angle θ of the flange member 12 is set according to the flow rate of the flange member 12, but an example of θ is 2 °.

  The upper edges 25 and 26 of the gutter member 12 are linearly formed across the first end portion 31 and the second end portion 32 so that the water to be treated overflows uniformly. Heights h1 and h2 (shown in FIG. 3) from the upper surface of the running water guide plate 13 to the upper edges 25 and 26 of the eaves member 12 are equal to each other. For this reason, a part of to-be-processed water W1 which flows inside the dredge member 12 is a substantially equal amount mutually from the front-end | tip of the guide parts 25a and 25b of the upper edges 25 and 26 of the side walls 12a and 12b toward the flowing water guide plate 13. Falls into two directions and flows down.

  A running water guide plate 13 is disposed below the eaves member 12. The running water guide plate 13 is a member also called a water shedder, and is made of a sheet metal having corrosion resistance such as a stainless steel plate, and is arranged in parallel along the flange member 12. This running water guide plate 13 has a shape that is long in the horizontal direction, and is located on one end in the longitudinal direction (near the bottom of the outlet 20) and on the other end in the longitudinal direction (the side far from the outlet 20). And a downstream end 42 located. The running water guide plate 13 is disposed in an inclined posture so as to form an angle θ with respect to the horizontal plane A (shown in FIG. 1) so that the downstream end 42 is higher than the upstream end 41. Yes.

  As shown in FIG. 3, the running water guide plate 13 has a convex shape upward, and the highest ridge line portion 13 a is formed at the center in the width direction. The ridge line portion 13 a is located in the vicinity of the center in the width direction of the flange member 12. Inclined surfaces 13b and 13c are formed on both sides of the ridge line portion 13a with the ridge line portion 13a as a boundary. These inclined surfaces 13b and 13c become lower as they move away from the ridge line portion 13a, and are inclined so that the tips 45 and 46 become the lowest.

  For this reason, the to-be-processed water W1 which overflowed from the one upper edge 25 of the dredging member 12 flows down on one inclined surface 13b of the flowing water guide plate 13, and is transmitted along this inclined surface 13b from the front-end | tip 45 of the inclined surface 13b. It flows into the processing tank 14. The treated water W1 overflowed from the other upper edge 26 of the dredging member 12 flows down on the other inclined surface 13c of the flowing water guide plate 13, and is transmitted along the inclined surface 13c from the tip 46 of the inclined surface 13c. 14 will flow in.

  Slits 52 and 53 are formed between the lower edges 50 and 51 of the side walls 12 a and 12 b and the running water guide plate 13. The slits 52 and 53 are formed in parallel with the upper edges 25 and 26 of the flange member 12. The opening widths G 1 and G 2 (shown in FIG. 3) of the slits 52 and 53 are substantially constant in the longitudinal direction of the running water guide plate 13. The opening widths G1 and G2 of the slits 52 and 53 are set so that the amounts of water to be treated flowing out from the slits 52 and 53 are substantially equal to each other.

  A part of the water to be treated flowing inside the gutter member 12 passes through the slits 52 and 53 and flows out toward the inclined surfaces 13 b and 13 c of the flowing water guide plate 13. That is, underflow occurs. In this case, the water to be treated flowing out from one slit 52 is directed to one inclined surface 13b of the flowing water guide plate 13, and the water to be treated discharged from the other slit 53 is directed to the other inclined surface 13c of the flowing water guide plate 13. .

  As shown in FIG. 1, a scraping portion 60 extending obliquely upward is formed on the side portion of the processing tank 14. A first guide plate 61 and a second guide plate 62 are disposed on the scraping portion 60. A sludge discharge unit 65 and a conveyor drive mechanism 66 are disposed above the scraping unit 60. The conveyor drive mechanism 66 includes a motor for driving the sludge carry-out conveyor 15. The sludge discharge part 65 and the conveyor drive mechanism 66 are provided in a position higher than the water surface W2 (shown in FIG. 3) of the processing tank 14.

  A sludge collection box 67 is placed below the sludge discharge section 65. The bottom portion 67 a of the sludge collection box 67 has water permeability so that water adhering to the coating residue stored in the sludge collection box 67 can be discharged. The water discharged from the bottom 67 a is returned to the scraping unit 60 through the circulation unit 68. For this reason, the paint residue accommodated in the sludge collection box 67 becomes almost dry in a relatively short time.

  The sludge carry-out conveyor 15 includes a pair of chains 72 and 73 (shown in FIG. 3) that move endlessly between the upper sprocket 70 and the lower sprocket 71, and a plurality of chains 72 and 73 attached to the chains 72 and 73 at predetermined intervals. And a scraper 74. The conveyor 15 has an upper portion 15 a that moves along the water surface W <b> 2 of the treatment tank 14 and a lower portion 15 b that moves along the bottom surface 14 a of the treatment tank 14.

  The tip 45 of one inclined surface 13b of the flowing water guide plate 13 is located at a position facing one chain 72 so that the water to be treated can flow toward one chain 72 of the upper portion 15a of the conveyor 15. Has been placed. The tip 46 of the other inclined surface 13c is disposed at a position facing the other chain 73 so that the water to be treated can flow toward the other chain 73 of the upper portion 15a of the conveyor 15.

  The sludge carry-out conveyor 15 can be switched between a first direction indicated by an arrow M1 in FIG. 1 and a second direction indicated by an arrow M2 in accordance with the rotation direction of a motor capable of rotating in the forward and reverse directions of the conveyor drive mechanism 66. . The motor of the conveyor driving mechanism 66 can switch the rotation direction at predetermined time intervals by a control unit (not shown) including a timer that functions as a switching unit. The timer in this case is set with a timing (interval) for switching the direction so that the first direction M1 is longer than the second direction M2. The movement directions M1 and M2 may be switched by a manually operated switch.

  As shown in FIG. 1, a filter mechanism 16 is provided in the processing tank 14. The filter mechanism 16 includes at least one filter drum 81 and a filter rotation mechanism 82 that rotates the filter drum 81. The filter drum 81 has a large number of small holes formed by, for example, photoetching. The filter drum 81 is disposed below the water surface W2 in the treatment tank 14, and can rotate around an axis extending in the horizontal direction. The filter drum 81 is disposed between the upper part 15 a and the lower part 15 b of the conveyor 15.

  A scraping member 85 (a part of which is shown in FIG. 1) is in contact with the peripheral surface of the filter drum 81 to prevent the filter drum 81 from being clogged. The paint residue scraped off by the scraping member 85 is dropped toward the bottom surface 14 a of the treatment tank 14. The flow path 86 inside the filter drum 81 communicates with an overflow tank 90 (shown in FIG. 3) provided in the clean tank 17. The clean tank 17 is provided with a pump 91 for sending filtered water to the painting booth again.

  The overflow tank 90 functions as a water surface holding means for holding the height of the water surface W2 of the processing tank 14. The water to be treated W1 filtered through the filter drum 81 flows into the clean tank 17 from the flow path 86 through the overflow tank 90. By this overflow tank 90, the water surface W2 in the processing tank 14 is maintained at a height at which it can come into contact with the scraper 74 of the upper portion 15a of the conveyor 15.

Next, the operation of the paint debris treatment apparatus 10 having the above-described configuration will be described.
To-be-treated water W1 containing paint residue sent from a painting facility such as a painting booth is supplied to the inflow tank 11 from the supply pipe 18 shown in FIG. As shown in FIG. 5, the water to be treated W <b> 1 supplied to the inflow tank 11 flows out from the outlet 20 toward the eaves member 12 with a height difference.

  The treated water W1 flowing into the inner side of the dredging member 12 flows from the first end 31 of the dredging member 12 toward the water blocking wall 33 of the second end 32, and a part of the treated water W1. Overflows from the upper edges 25 and 26 of the eaves member 12 and falls onto the inclined surfaces 13b and 13c of the running water guide plate 13. A part of the water to be treated W1 passes through the slits 52 and 53 toward the inclined surfaces 13b and 13c of the running water guide plate 13.

  The water to be treated on one inclined surface 13b flows along the inclined surface 13b, flows down from the tip 45 of the inclined surface 13b toward the one chain 72, and flows into the treatment tank 14. The water to be treated on the other inclined surface 13c flows along the inclined surface 13c, flows down from the tip 46 of the inclined surface 13c toward the other chain 73, and flows into the treatment tank 14. For this reason, it is possible to prevent a problem that the paint dust adheres to the chains 72 and 73 and solidifies.

  Here, if the dredging member 12 is horizontally arranged so as to be parallel to the horizontal plane A, the water to be treated flowing into the dredging member 12 from the outlet 20 will flow vigorously toward the water blocking wall 33 and stop the water. Since it hits the wall 33, the overflow amount near the second end portion 32 becomes larger than the overflow amount near the first end portion 31. That is, when the eaves member 12 is disposed horizontally, the amount of water to be treated that overflows from the eaves member 12 greatly varies in each longitudinal portion of the eaves member 12. If it does so, the quantity of the to-be-processed water which falls on the flowing water guide plate 13 will vary widely in each part of the longitudinal direction of the flowing water guide plate 13.

  However, since the eaves member 12 of the present embodiment is disposed in a posture inclined at an angle θ such that the second end portion 32 on the downstream side becomes higher, the water to be treated that flows toward the water blocking wall 33. However, the occurrence of many overflows in the vicinity of the second end portion 32 can be suppressed. And the to-be-processed water in the collar member 12 can be divided into two directions from the upper edges 25 and 26 of a pair of side wall 12a, 12b, and can be made to overflow. The treated water that has overflowed is received by the inclined surfaces 13 b and 13 c of the running water guide plate 13. Further, part of the water to be treated in the eaves member 12 is divided into two sides from the pair of slits 52 and 53 toward the inclined surfaces 13 b and 13 c of the running water guide plate 13.

  For this reason, the water to be treated flows on the inclined surfaces 13b and 13c of the running water guide plate 13 in a state of being almost nearly equal, and variation in the flow rate in each part in the longitudinal direction of the running water guide plate 13 can be suppressed. As a result, the water to be treated can be dispersed and introduced into a wide area in the treatment tank 14. For this reason, the water surface in the processing tank 14 can be greatly waved, or the degree to which the water to be treated is stirred in the processing tank 14 can be reduced. For this reason, the paint residue is likely to float on the water surface W2, and the paint residue is prevented from diffusing into the water.

  The paint residue S1 (shown in FIG. 3) floating near the water surface W2 is conveyed to the sludge discharge portion 65 by the scraper 74 of the upper portion 15a of the conveyor 15 when the sludge carry-out conveyor 15 moves in the first direction M1. Then, it is dropped in the sludge collection box 67. For this reason, the paint residue in the treatment tank 14 can be discharged efficiently.

  On the other hand, the paint residue S2 (shown in FIG. 3) sinking to the bottom surface 14a of the processing tank 14 is caused by the scraper 74 of the lower portion 15b of the conveyor 15 when the sludge carry-out conveyor 15 moves in the second direction M2. Then, it is transported from the bottom surface 14 a of the treatment tank 14 to the sludge discharge section 65 and dropped into the sludge collection box 67.

  On the other hand, the water to be treated in the treatment tank 14 is filtered by the filter drum 81. The filtered water W3 flows into the clean tank 17 through the channel 86 inside the filter drum 81 and the overflow tank 90. Then, it is pumped up by the pump 91, sent to the painting booth again through the valve 92, and reused. The paint residue adsorbed on the peripheral surface of the filter drum 81 is dropped toward the bottom surface 14 a of the processing tank 14 by the scraping member 85 as the filter drum 81 rotates.

  As described above, according to the paint debris treatment apparatus 10 of the present embodiment, the water to be treated that has flowed out from the eaves member 12 onto the running water guide plate 13 passes through the tips 45 and 46 of the running water guide plate 13 into the treatment tank 14. Since it flows into a wide area and does not concentrate in one place, it can be avoided that the water surface W2 in the treatment tank 14 is greatly waved, and the water to be treated in the treatment tank 14 can be prevented from being vigorously stirred. . For this reason, the paint residue easily floats on the water surface W2, and the paint residue floating on the water surface W2 can be efficiently carried out by the sludge carry-out conveyor 15. For this reason, the paint residue in the treatment tank 14 can be removed at an early stage, and the paint residue can be prevented from solidifying in the treatment tank 14. The clean water W3 purified by the filter drum 81 can be recirculated by the pump 91.

  In addition, there is an effect that the paint residue that is about to settle inside of the gutter member 12 is poured out by the underflow in which the water to be treated is constantly flowed from the slits 52 and 53 below the gutter member 12. Furthermore, by constantly overflowing the water to be treated from the upper part of the dredging member 12, there is an effect of causing the paint residue floating in the water to be treated to flow out of the dredging member 12. If the water surface is kept inside the gutter member 12 without overflowing, the floating paint residue floats on the water surface and adheres to the inner surface of the gutter member 12 and hardens. For this reason, it is possible to prevent the paint residue from adhering to the collar member 12 by always overflowing the water to be treated of the collar member 12 and expelling the floating paint residue as in this embodiment.

  In carrying out the present invention, the components of the paint debris treatment device such as the inflow tank, the dredging member, the running water guide plate, the treatment tank, the sludge discharge conveyor, the filter mechanism, and the clean tank are not deviated from the present invention. It goes without saying that various modifications can be made.

  DESCRIPTION OF SYMBOLS 10 ... Paint debris processing apparatus, 11 ... Inflow tank, 12 ... Saddle member, 12a, 12b ... Side wall, 13 ... Running water guide plate, 13a, 13b ... Inclined surface, 14 ... Treatment tank, 15 ... Sludge carry-out conveyor, 15a ... Upper side Part, 15b ... Lower part, 16 ... Filter mechanism, 17 ... Clean tank, 20 ... Outlet, 25, 26 ... Upper edge, 31 ... First end, 32 ... Second end, 33 ... Water stop Wall, 52, 53 ... slit, 65 ... sludge discharge part, 72, 73 ... chain.

Claims (4)

An inflow tank to which water to be treated including paint residue is supplied;
A first end located near the outlet of the inflow tank and a second end located farther from the outlet; the second end being higher than the first end; An eaves member having a pair of side walls having an upper edge that is disposed in an inclined posture so that the water to be treated can overflow;
A flowing water guide plate having a pair of inclined surfaces which are disposed below the dredger member and receive the water to be treated which overflows from the respective upper edges of the dredger member;
A slit that is formed between the lower edge of each of the pair of side walls and the upper surface of the flowing water guide plate, and causes an underflow toward the inclined surfaces in the water to be treated flowing through the eaves member;
A treatment tank containing treated water that flows down along each of the inclined surfaces;
A sludge carry-out conveyor having an upper part arranged in the treatment tank and moving along the water surface of the treatment tank and a lower part moving along the bottom surface of the treatment tank;
A filter mechanism for filtering the water to be treated flowing into the treatment tank;
A paint scum treatment apparatus characterized by comprising:   The running water guide plate has an upstream end located near the outlet and a downstream end located far from the outlet, and the downstream end is the upstream end. 2. The paint scum treatment apparatus according to claim 1, wherein the paint scum treatment apparatus is disposed below the heel member in an inclined posture so as to be higher than a portion.   The sludge carry-out conveyor has a conveyor drive mechanism that can be switched between a first direction and a second direction, and is near the water surface by the upper part of the conveyor when the conveyor moves in the first direction. The paint residue is conveyed toward the sludge discharge part, and when the conveyor moves in the second direction, the lower part of the conveyor causes the paint residue present on the bottom surface of the treatment tank to move toward the sludge discharge part. The paint scum treatment apparatus according to claim 1, wherein the paint scum treatment apparatus is conveyed.   The filter mechanism includes a filter drum that is rotatably provided in the processing tank, a flow path that guides water filtered by the filter drum to a clean tank, and a peripheral surface of the filter drum. 4. The paint scum treatment apparatus according to claim 1, further comprising a scraping member that prevents clogging of the paint.

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