WO2006087881A1 - 浮上分離装置および浮上分離方法 - Google Patents
浮上分離装置および浮上分離方法 Download PDFInfo
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- WO2006087881A1 WO2006087881A1 PCT/JP2006/300582 JP2006300582W WO2006087881A1 WO 2006087881 A1 WO2006087881 A1 WO 2006087881A1 JP 2006300582 W JP2006300582 W JP 2006300582W WO 2006087881 A1 WO2006087881 A1 WO 2006087881A1
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- WIPO (PCT)
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- skimmer
- foreign matter
- processing liquid
- liquid
- scum box
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
Definitions
- the present invention relates to a levitation separation apparatus and a levitation separation method for separating foreign matter from a processing liquid in which floating foreign matter is mixed.
- production lines such as automobiles have a coating process for coating a workpiece such as a car body.
- paint is applied to the workpiece by spraying paint from a painting gun at the painting booth.
- surplus paint that has not been applied to the workpiece is lowered to the floor by air flowing down in the painting booth.
- the floor surface of the painting booth is provided with a surplus paint collecting section having an industrial water supply channel, a drain channel, and an inclined surface for collecting the industrial water and surplus paint in the drain channel.
- the surplus paint is washed away with industrial water (hereinafter referred to as “treatment liquid”), collected, and discharged to the floating separation tank of the floating separation apparatus arranged outside the painting booth.
- treatment liquid industrial water
- a flotation separation device that separates surplus paint from the treatment liquid as paint sludge (hereinafter referred to as "foreign matter")
- foreign matter one that has two separation tanks, a first flotation separation tank and a second flotation separation tank. It has been.
- the processing liquid containing the foreign matter is supplied to the first floating separation tank to which the flocculant has been added in advance, and the foreign matter is floated and separated.
- the processing solution containing foreign substances in the first levitation separation tank is introduced into the second levitation separation tank, and the aggregation of foreign substances, that is, the separation of foreign substances from the processing liquid is further promoted.
- FIG. 6 is an enlarged view of a main part showing a skimmer installation state in a conventional levitation separator.
- a scum box 200 is arranged in the second levitation separation tank so that an opening for discharging foreign matter to the outside is located near the liquid surface, and the scum box 200 is swung toward the opening of the scum box 200.
- a skimmer 100 is provided to attract foreign substances that have floated on the liquid surface. However, the foreign matter easily adheres to the weir of the scum box 200 having high adhesiveness. In order to maintain the normal operation of the device, a great deal of labor is required to periodically remove foreign matter adhering to the skimmer 100 or the like.
- the liquid level in the levitation separation tank is preferably set higher than the weir, but in that case, the treatment liquid containing foreign matter is always present. Will flow into the scum box 200.
- the processing liquid containing foreign matter is supplied to the foreign matter filtration tank provided on the downstream side of the scum box 200, and the processing liquid overflows beyond the processing capacity of the mesh wire mesh in the tank.
- the foreign matter is crushed by the skimmer 100 and the scum box 200, and the skimmer 100 and the scum box 20 There is a problem that it adheres to 0 and accumulates and enlarges, deteriorating the foreign substance removal performance
- the present inventors have intensively studied to solve the above problems. As a result, a floating separation apparatus and a floating separation method that prevent excessive treatment liquid from flowing out and prevent foreign matter from adhering to the scum box weir have been realized, and the present invention has been completed.
- a floating separation tank in which processing liquid containing floating foreign substances is stored, and swirls along the liquid level of the processing liquid in the floating separation tank, and floats to the liquid level.
- the swirling skimmer moves away from the scum box in the swiveling direction, the water level of the processing liquid is lowered, and when the skimmer approaches the scum box in the swirling direction, the processing liquid is separated.
- a flotation separator characterized by comprising a water level switching adjustment means for raising the water level.
- the water level switching adjusting means is provided on the discharge path, a discharge path for discharging the processing liquid from the floating separation tank to the outside, and at least one skimmer detection switch for detecting the position of the skimmer.
- the floating separation apparatus according to [1] or [2], further comprising: an electromagnetic valve that opens and closes the discharge path using a detection signal from the skimmer detection switch.
- the lowered water level is set below the weir, and the raised water level is set above the weir and below the upper end of the scum box [2] or The floating separation apparatus according to [3].
- the water level of the processing liquid is lowered when the turning skimmer is separated from the scumbotter in the turning direction, and the water level of the processing liquid is raised when the skimmer approaches the scum box in the turning direction.
- a floatation separation method characterized by removing the surface.
- the water level switching adjusting means sends the processing liquid to the outside of the floating separation tank to lower the water level. For this reason, when the skimmer does not drop the foreign matter into the scum box, it is possible to prevent the processing liquid from being discarded from the scumbot and to prevent the excessive processing liquid from flowing out of the floating separation tank.
- the skimmer When the skimmer approaches the scum box in the swiveling direction, it is sent to the outside of the levitation separation tank, and the control of the water level switching adjustment means to raise the water level of the processing liquid by stopping the outflow of the processing liquid. To do.
- the water level switching adjustment means By adjusting the water level of the treatment liquid in this way by the water level switching adjustment means, when the turning skimmer squeezes the foreign matter into the scum box opening and drops it, the foreign matter becomes higher than the scum box weir. Floating on the liquid surface. For this reason, the skimmer can not crush the foreign matter and attach it to the scum box, and can efficiently drop the collected foreign matter into the opening for disposal.
- the foreign matter that is attracted by the skimmer and floats on the liquid surface is Since the opening on the side where one approaches is made up of a weir formed lower than the other parts, it smoothly flows from the weir into the scum box.
- the water level switching adjusting means detects when the skimmer is at a predetermined position by the skimmer detection switch, and the electromagnetic valve opens and closes the discharge path by a detection signal from the skimmer detection switch.
- the processing liquid in the levitation separation tank can be discharged from the discharge path to the outside, or the discharge can be stopped.
- the water level switching adjustment means opens the electromagnetic valve, discharges the processing liquid from the discharge path to the outside, lowers the water level, and the skimmer approaches the scum box in the swiveling direction.
- the solenoid valve is closed to control to raise the water level of the processing liquid. Then, as the swimmering skimmer approaches the scumbotter weir, the water level rises, and the foreign matter that floats on the liquid surface can be drawn and the opening force of the scum box can be dropped. Since only the foreign matter is discarded, the time for discarding the processing solution containing a large amount of foreign matter can be reduced and the amount of the processing solution discarded can be reduced.
- the width of the skimmer is set longer than the width of the weir. For this reason, when the skimmer passes over the weir, the skimmer slides on the front end of the side wall of the scum box located on the left and right of the weir, and the foreign matter that prevents the skimmer from contacting the upper surface of the weir is crushed by the weir. There is nothing.
- the levitation separation apparatus and the levitation separation method of the present invention it is possible to prevent the treatment liquid from flowing out excessively when separating foreign matter from the treatment liquid containing foreign matter, and to prevent the scum box weir from flowing out. It is possible to prevent foreign matter from adhering.
- FIG. 1 is a schematic diagram showing the overall configuration of a painting facility provided with a levitation separator according to an embodiment of the present invention.
- FIG. 2 is an enlarged schematic view of a main part of a flotation separation apparatus according to an embodiment of the present invention.
- FIG. 3 is an enlarged view of a main part showing a skimmer installation state of the levitation separator according to the embodiment of the present invention.
- FIG. 4 is a cross-sectional view taken along the line XX in FIG.
- FIG. 5 is a perspective view of a main part showing a floating separation apparatus according to an embodiment of the present invention.
- FIG. 6 is an enlarged view of a main part showing a skimmer installation state in a conventional levitation separator.
- treatment liquid Industrial water is treated as a treatment liquid, and paint sludge, which is a surplus paint mixed in the treatment liquid, is described as a foreign material.
- "foreign matter floating (floating) on the liquid level” and the equivalent expression are not only foreign matter floating on the surface of the liquid (above the liquid level), but also in the liquid (liquid level) (Below) can contain foreign substances.
- a treatment liquid containing foreign substances that is floated and separated for reuse may be referred to as a “treatment liquid mixture”.
- the painting facility 1 paints the vehicle body W with the painting robot 22 while conveying the vehicle body W with the transfer device 21, and lowers the surplus paint not applied to the vehicle body W onto the floor 23a of the painting booth 23.
- the equipment is collected while being washed away with the processing liquid, and the paint mixed in the processing liquid is separated as foreign matter, and the processing liquid mixture is purified and circulated for reuse.
- the painting equipment 1 consists of a painting device 2 that paints the vehicle body W and a levitating separation system A that separates foreign material from the processing liquid that contains excess paint (foreign material) that has not been applied to the vehicle body W. And a flow passage 8 for sending the processing liquid or the processing liquid mixture to desired places.
- the coating device 2 sprays paint onto the painting booth 23 that can accommodate the vehicle body W, the conveyance device 21 that conveys the vehicle body W into the painting booth 23, and the vehicle body W that is conveyed by the conveyance device 21. And a painting robot 22 for performing painting work.
- the transfer device 21 includes, for example, a rail 21a laid in the painting booth 23, a transfer carriage 21b on which a drive motor is mounted, and a sensor (not shown) that detects the amount of movement of the transfer carriage 21b. And a control device (not shown) for controlling the operation of the painting robot 22 and the conveyance of the conveyance carriage 21b.
- the painting robot 22 is controlled by the data stored in the control device (not shown) based on the position of the transfer device 21, and paints the vehicle body w .
- the paint spraying device has an arm provided with 22a.
- the painting gun 22a sprays the paint stored in a tank (not shown) from the tip of the arm of the painting robot 22 through the paint supply pipe.
- the coating booth 23 is for collecting the processing liquid containing the excess paint (foreign matter) discharged from the coating apparatus 2 while preventing the dispersion of the excess paint (foreign matter).
- This painting booth 23 has an inclined floor 23a formed so that the lowered processing liquid is automatically collected at the drain 23b, and a drain 23b disposed at the lowest position of the floor 23a.
- a ceiling surface 23c provided with an air ejection device 24 for lowering excess paint that has not been fixed to the vehicle body W by jetting air downward to the floor surface 23a.
- the floor surface 23a is provided with a plurality of nozzles 81a that are installed at the opening end of the processing liquid supply path 81 for supplying the processing liquid for washing away the paint that has fallen on the floor surface 23a and that spray the processing liquid. .
- the levitation separation system A separates the treatment liquid mixture containing foreign matter (excess paint) discharged from the coating device 2 into treatment liquid and foreign matter, and reprocesses the treatment liquid.
- This is a system that can be used.
- the levitation separation system A is separated by the first levitation separation device 3 that performs the first separation in which the foreign matter in the processing liquid mixture is levitated and separated into the foreign matter and the processing liquid, and the first levitation separation device 3.
- the second flotation separation device 4 that performs the second separation to further separate the treatment liquid mixture (treatment liquid containing a large amount of foreign substances) into foreign substances and the treatment liquid, and this second flotation separation
- a filtration tank 9 that performs a third separation in which the foreign matter separated by the apparatus 4 is dehydrated and filtered is configured.
- the first levitation separator 3 floats and separates the foreign matter in the processing liquid mixture on the liquid surface, and clears the clear processing liquid in the lower layer of the first levitation separation tank 31 to the nozzle 81a via the processing liquid supply path 81.
- This is a device that feeds and feeds the liquid processing solution mixture containing a large amount of foreign substances to the second floating separation tank 41 via the supply path 83 by the float pump P2.
- the first levitation separation device 3 includes a discharge path 82, a first levitation separation tank 31, a float pump P2, a supply path 83, a return path 84, a processing liquid supply path 81, and a pumping pump P1. It is mainly composed.
- the discharge path 82 is a pipe that is connected to the drain outlet 23b and draws the processing liquid mixture discharged from the drain outlet 23b into the first floating separation tank 31.
- the first levitation separation tank 31 is a storage tank that stores the processing liquid mixture sent from the discharge path 82 and the return path 84 and floats foreign substances contained in the processing liquid mixture. It is configured to store about 300 tons of processing liquid mixture during operation.
- the capacity of the first levitation separation tank 31 depends on the size of the painting booth 23, the amount of the treatment liquid flowing so as to cover the floor surface 23a of the painting booth 23, the amount of surplus paint, the paint and the treatment liquid. The amount is determined according to the time required for separation.
- the discharge path 82, a return path 84, which will be described later, a float pump P 2, and a supply path 83 are arranged.
- the first floating separation tank 31 is disposed at a position lower than the second floating separation tank 41 and the overflow tank 6.
- One end of the processing liquid supply path 81 is connected to the lower layer of the first floating separation tank 31, and the other end is connected to the nozzle 81a via the pumping pump P1.
- the pumping pump P1 is connected to the processing liquid supply path 81 to pump up the clear processing liquid near the bottom surface of the first floating separation tank 31 and supply it to the nozzle 81a.
- the float type pump P2 has a suction port arranged on the liquid level of the processing liquid mixture in the first levitation separation tank 31, and sucks foreign matter and the processing liquid mixture floating on the liquid level while containing air.
- the float type pump P2 is disposed in the first levitation separation tank 31 by a gantry (not shown). It is installed on the surface of the liquid mixture.
- the float pump P2 has a function of removing foreign substances from the processing liquid in the first levitation separation tank 31 because the suction port is arranged on the liquid level of the processing liquid mixture.
- the second levitation separator 4 stores the treatment liquid mixture sucked by the float pump P2 and sent from the supply path 83 in the second levitation separation tank 41, and cuts the water level. It is a device that removes foreign matter to the filtration tank 9 by the foreign matter removal means 5 while sending the treatment liquid to the overflow tank 6 by the exchange adjustment means 7 and adjusting the water level.
- the second levitation separation device 4 includes a supply path 83, a second levitation separation tank 41, a foreign matter removal means 5, an overflow tank 6, and a water level switching adjustment means 7.
- the second levitating / separating device 4 is provided with at least a skimmer 52 and a scum box 53 that constitute a part of the foreign matter removing means 5.
- the second levitation separator 4 corresponds to the “levitation separator” recited in the claims.
- the supply path 83 is a pipe for sending the treatment liquid mixture containing a large amount of foreign matter sucked by the float pump P2 into the feed dwell 43 and discharging it.
- One end of the supply path 83 is connected to the float pump P2, the other end passes through the side surfaces of the second levitation separation tank 41 and the feed dwell 43, and the other end is in the center of the lower layer in the feed dwell 43. It is arranged with the open end facing upward.
- an air-containing treatment liquid supply path 86 connected to the overflow tank 6 via a pressure pump P3.
- the pressurizing pump P3 is for mixing and bubbling air taken from the atmosphere with the processing liquid supplied from the overflow tank 6.
- the processing liquid containing air is sent to the supply path 83 by the pressurizing pump P3, and is stirred with the processing liquid mixture to promote the aggregation and growth of the foreign substances, and the foreign substances are sent to the second floating separation tank 41. When it is, it floats on the liquid surface, flows toward the inner peripheral side of the foreign matter processing cylinder 44, and flows so as to be efficiently attracted by the skimmer 52.
- the second floating separation tank 41 is stored in the first floating separation tank 31 (see FIG. 1) and supplied with a processing liquid mixture containing a large amount of floating foreign substances. It is provided to separate foreign substances from the processing liquid.
- the second levitation separation tank 41 is a two-tank type storage tank in which a foreign matter treatment cylinder 44 is installed in a tank body 42 in a state of air fishing.
- the second levitation separation tank 41 includes a tank body 42, a feed dwell 43, a foreign matter treatment cylinder 44, a treatment cylinder support member 45, an overflow weir 42a, a foreign matter removal means 5, a discharge path 85, an overflow A flow tank 6 is installed, and a filtration tank 9 is provided in the vicinity.
- the second floating separation tank 41 corresponds to the “floating separation tank” recited in the claims.
- the tank body 42 is made of, for example, a rectangular metal container in plan view, and has an upper surface opened (see FIG. 5).
- the tank body 42 is adjacent to the overflow tank 6 on one side through an overflow weir 42a for maintaining a predetermined amount of the processing liquid mixture in the tank body 42, and a scum box 53 is provided on the opposite side. It is installed.
- the feed reel 43 has a treatment liquid mixture force that contains a large amount of foreign matter in the first floating separation tank 31 discharged from the supply path 83.
- This is a tube for providing directivity so that it flows upward.
- the feed well 43 is a cylindrical member whose upper opening end is widened, and is welded so that its lower end closes to the center of the inner bottom of the second floating separation tank 41 and is provided vertically.
- the feed well 43 is installed in the second floating separation tank 41 in a state where it is submerged in the treatment liquid mixture, and the upper half of the feed well is arranged in the foreign matter treatment tube 44.
- the expanded upper end of the feeder 43 has a foreign material that floats inside the feeder 43 and is directed toward the inner peripheral surface of the foreign material processing cylinder 44, and flows in the direction indicated by the arrow ⁇ . It is formed to improve.
- the discharge port of the supply path 83 is arranged upward, and the treatment liquid mixture sucked up from the first floating separation tank 31 is It is discharged toward the liquid surface in the foreign substance processing cylinder 44.
- the foreign substance processing cylinder 44 is a cylindrical member suspended in the second floating separation tank 41, and is fixed to the inner wall of the tank main body 42 by a processing cylinder support member 45 provided on the outer periphery. .
- the foreign substance processing cylinder 44 is disposed in a state where the lower end portion is spaced from the inner bottom of the tank body 42 and is disposed around the feed dwell 43, and the upper end portion protrudes from the liquid level of the processing liquid mixture.
- the lower end of the foreign matter processing tube 44 is designed to prevent the foreign matter inside the foreign matter processing tube 44 from flowing out of the foreign matter processing tube 44 and by rotating the inside of the foreign matter processing tube 44 as shown by an arrow C. In order to allow time for the foreign matter in the treatment liquid mixture to agglomerate and float and to separate more in the foreign matter treatment tube 44, the diameter is reduced.
- the processing tube support member 45 is a member for installing the foreign material processing tube 44 in the tank main body 42 in a state of air fishing, and includes a plurality of metal rod-shaped members. One end of the processing cylinder support member 45 is welded to the outer peripheral surface of the foreign substance processing cylinder 44, and the other end is welded to the inner wall of the tank body 42.
- the foreign matter removing means 5 is a device that removes the foreign matter that has floated on the liquid level of the processing liquid mixture in the foreign matter processing cylinder 44 by using a skimmer 52 and flows it into the scum box 53.
- the foreign matter removing means 5 mainly includes a motor M, a skimmer arm 51, a skimmer 52, and a scum box 53.
- the motor M is a drive source for rotating the skimmer arm 51 at a low speed, and is installed on the motor support member 10 disposed at the upper center of the tank body 42 so as to straddle the tank body 42. (See Figure 5).
- the motor shaft Ma of the motor M is loosely inserted into a bracket 42b installed at the upper center of the tank body 42, and the tip is connected to the central part of the skimmer arm 51 by a bolt.
- the skimmer arm 51 is composed of a plate member that is installed so as to be rotatable with respect to the upper peripheral edge in the foreign matter processing cylinder 44.
- the skimmer arm 51 is horizontally installed by the motor M so as to turn above the liquid level of the processing liquid mixture. Yes.
- a pair of skimmers 52 (52a, 52b) are installed side by side.
- operating rods 73 and 74 for operating the skimmer detection switches 71 and 72 described later are installed.
- the skimmer 52 is a member for swirling the foreign matter floating on the treatment liquid mixture in the foreign matter treatment cylinder 44 along the liquid surface and is bolted to the skimmer arm 51 via the connecting member 54. ing.
- the length of the skimmer 52 is longer than the length in the radial direction of the foreign matter processing cylinder 44 in the opening 53a of the scum box 53. That is, the skimmer 52 is formed longer than the length of the foreign matter removal weir 53b, and when passing over the foreign matter removal weir 53b, the skimmer 52 is in sliding contact with the front end portion of the side wall of the scum box 53 positioned on the left and right of the foreign matter removal weir 53b. Therefore, the foreign matter removal weir 53b should not be in contact with the upper surface.
- the skimmer 52 is made of a rectangular rubber plate having flexibility, and the lower end 52c is slightly lower than the foreign matter removal weir 53b of the scum box 53. It is a position that is slightly immersed in the liquid level F2 at the time, and is positioned at a position lower than the upper end 53c of the opening 53a.
- the scum box 53 is a rectangular tube-shaped member for discharging the foreign matter attracted by the skimmer 52 from the liquid surface, and is provided for discarding the foreign matter.
- the scum box 53 has an opening 53a and a foreign matter removal weir 53b at the upper end, and a foreign matter discharge port 53d having a reduced diameter at the lower end.
- the scum box 53 is a shouter for sending foreign matter flowing into the scum box 53 to the filtration tank 9. It has a function.
- the scum box 53 is fixed to the second levitating separation tank 41 in a state of penetrating the side wall of the foreign substance treatment cylinder 44 and the tank body 42, and the upper end opening 53a is the liquid level of the treatment liquid mixture in the foreign substance treatment cylinder 44.
- the foreign matter discharge port 53 d at the lower end is arranged near the filtration tank 9 and is disposed in the vicinity.
- the opening 53a has a rectangular shape that is long in the radial direction of the foreign substance processing tube 44 in plan view. For example, one of the long sides to which the skimmer 52 that rotates in the right direction (clockwise) approaches.
- the foreign matter removing weir 53b is formed on the surface.
- the foreign matter removal weir 53b is formed lower than the upper end 53c (the other part of the opening 53a) (see FIG. 3).
- the filtration tank 9 is a tank for filtering and storing the foreign matter discharged from the scum box 53.
- the foreign matter is separated from the treatment liquid mixture. It is also a device that performs the third separation.
- the filtration tank 9 has a bowl-shaped mesh wire net 91 for dehydrating and storing foreign substances, and has a discharge port 9a (see FIG. 2) for discharging the filtered processing liquid to the outside on the bottom surface.
- the water level switching adjusting means 7 lowers the water level of the processing liquid mixture to the liquid level F2 (see FIG. 3), and the skimmer 52 is connected to the scum box 53.
- This is a device for adjusting the liquid level by raising the water level of the processing liquid mixture to the liquid level F1 (see Fig. 3) when it is close to the swirl direction.
- the water level switching adjusting means 7 includes a discharge path 85 for discharging the processing liquid from the second floating separation tank 41 to the overflow tank 6 (external), skimmer detection switches 71 and 72 for detecting the position of the skimmer 52, and a discharge path 85. And an electromagnetic valve V that is opened and closed by a detection signal from the skimmer detection switches 71 and 72.
- the liquid level F1 shown in FIG. 3 is a position above the position of the foreign matter removal weir 53b and lower than the upper end portion 53c of the scum box 53.
- the foreign matter floats on the liquid surface that is higher than the foreign matter removal weir 53b.
- the flow rate increases toward the inside of the scum box 53 with increasing momentum, and the foreign matter removal weir It comes to flow into the opening 53a without touching and adhering to 53b.
- the lower part of the skimmer 52 which is slightly higher than the lower end 52c of the skimmer 52, is immersed in the processing liquid mixture. It is a height that can be scraped, and is below the position of the foreign matter removal weir 53b.
- the difference between the liquid level F1 when the water level of the treatment liquid mixture rises and the liquid level F2 when it falls is, for example, about 2 cm.
- the skimmer detection switches 71, 72 are actuating rods 73, 74 that rotate when the skimmer 52 is positioned at an angle range of 30 to 45 degrees with respect to the scum box 53. Is a switch that opens and closes.
- the skimmer detection switches 71 and 72 are installed on the upper part of the outer wall surface of the foreign matter processing cylinder 44 and are electrically connected to the electromagnetic valve V, respectively.
- the skimmer detection switch 71 is activated when the skimmer 52 comes close to the scum box 53 in the swiveling direction, closes the valve of the electromagnetic valve V, and the processing liquid in the second levitation separation tank 41 flows from the discharge path 85 to the overflow tank 6 It is a switch that prevents the water from flowing into the water and raises the water level.
- the skimmer detection switch 71 is 45 degrees on the outer periphery of the foreign matter treatment cylinder 44 on the side where the skimmer 52 rotating in the right direction approaches the scumbox 53 extending in the radial direction of the foreign matter treatment cylinder 44. It is arrange
- the skimmer detection switch 72 is activated when the skimmer 52 moves away from the scum box 53 in the swiveling direction, and opens the valve of the electromagnetic valve V.
- the processing liquid in the second levitation separation tank 41 is discharged from the discharge path 85 to the overflow tank 6 It is a switch that lowers the water level in such a way that it flows.
- the skimmer detection switch 72 has 45 degrees on the outer periphery of the foreign matter processing cylinder 44 on the side where the skimmer 52 rotating in the right direction moves away from the radial scum box 53 of the foreign matter processing cylinder 44. It is arrange
- the discharge path 85 is a pipe for sending the purified treatment liquid between the foreign matter treatment cylinder 44 and the tank body 42 to the overflow soda 6.
- the discharge path 85 is disposed through the overflow weir 42a, and one end is disposed at the position of the liquid surface F2 in the processing liquid between the foreign substance processing cylinder 44 and the tank body 42, and the other end is electromagnetic. It is placed above the overflow tank 6 via valve V (see Fig. 2). That is, the discharge path 85 is disposed at a position where the processing liquid naturally flows when the processing liquid rises above the liquid level F2. As shown in FIG. 4, the discharge path 85 is disposed in the second floating separation tank 41 at a position facing the scum box 53. The electromagnetic valve V opens and closes the discharge path 85. Thus, the flow of the processing liquid is controlled.
- the overflow tank 6 temporarily stores the processing liquid flowing from the discharge passage 85 and the processing liquid flowing out of the overflow weir 42a when the processing liquid in the tank main body 42 increases. It is a tank to do. Below the overflow tank 6, a return path 84 for returning the processing liquid to the first floating separation tank 31 (see FIG. 1) and an air-containing processing liquid supply path 86 are installed. The overflow tank 6 is at a level lower than the water level of the treatment liquid in the second levitation separation tank 41 and higher than the water level of the treatment liquid in the first levitation separation tank 31. It is installed to become.
- One end (first end) side of the return path 84 is disposed in the processing liquid of the overflow tank 6, the other end (second end) side is disposed on the first floating separation tank 31, and the second end is disposed on the first end. Arranged at a position lower than one end, the treatment liquid naturally flows to the first levitation separation tank 31.
- the overflow weir 42a is for allowing the processing liquid to flow into the overflow tank 6 when the liquid level of the processing liquid in the tank body 42 exceeds the upper limit (that is, the liquid level F1).
- the overflow weir 42a is formed by opening a part of the side wall of the tank body 42 and fixing a plate member with a bolt to the opening.
- the plate material constituting the overflow weir 42a serves as both a part of the side wall of the tank body 42 and a part of the side wall of the overflow tank 6, and the upper end is substantially the same as the upper limit height of the liquid level of the processing liquid. Located at position (F1).
- a predetermined amount of the processing liquid mixture is put into the first flotation separation tank 31 shown in FIG. Is made.
- the air jetting device 24, the pumping pump Pl, the float pump P2, the pressure pump P3 and the motor M are operated, and the treatment liquid is applied to the painting booth 23 and the first floating separation tank. Circulate between 31 and the second levitation separation tank 41.
- the vehicle body W is transported into the coating booth 23 by the transport device 21.
- the vehicle body W is transported to the reference point of the painting booth 23, its position is detected by a sensor (not shown), and the painting robot 22 is painted by injecting paint from the painting gun 22a.
- the treatment liquid near the bottom of the first levitation separation tank 31 contains almost no foreign matter due to separation.
- This processing liquid is supplied again to the coating apparatus 2 through the processing liquid supply path 81 by the pumping pump P1, and is reused for washing away the paint that has fallen to the floor surface 23a.
- the treatment liquid mixture containing a large amount of foreign matter near the liquid surface sucked by the float pump P2 is mixed with bubbles made of air sent into the supply path 83 by the pressurization pump P3. It is discharged into the dwell 43.
- the discharged processing liquid mixture flows from the inside of the field dwell 43 toward the liquid surface on the inner peripheral surface of the foreign substance processing cylinder 44 in the direction of arrow B.
- the foreign matter that has been agglomerated while being agitated by the bubbles in the supply channel 83 further grows in the foreign matter processing cylinder 44, and near the liquid surface, it floats as a foreign matter with a large particle size. Collect on the inner peripheral surface of the foreign matter processing cylinder 44.
- the buoyant foreign matter floats on the liquid surface, Separated from foreign material.
- the tank main body 42 the foreign matter concentrates on the liquid surface in the foreign matter processing cylinder 44, and is hardly contained in other processing liquids. That is, the treatment liquid having a very low concentration of foreign matter descends between the foreign matter treatment tube 44 and the feed barrel 43 as shown by an arrow C, and the foreign matter treatment tube 44 and the tank are opened from the lower end opening of the foreign matter treatment tube 44. It flows between the main body 42.
- the skimmer arm 51 On the liquid level in the foreign matter processing cylinder 44, the skimmer arm 51 is rotated by the motor M, and the pair of skimmers 52 (52a, 52b) is swiveled.
- the skimmer detection switch 72 is turned on to operate the electromagnetic valve V, and the valve open.
- the purified processing liquid flows into the discharge path 85 having an opening at a position lower than the liquid level F1, and is sent into the overflow tank 6. Further, the processing liquid in the overflow tank 6 is returned to the first floating separation tank 31 from the return path 84.
- the water level of the treatment liquid mixture is adjusted so that the foreign matter is smoothly discharged into the scum box 53 as shown in FIG. It is adjusted so that it rises above and rises to the level of liquid level F1.
- foreign matters will be present in the processing liquid mixture above the lower end 52c of the skimmer 52 by floating up to the liquid level F1 of the processing liquid mixture located above the foreign matter removal weir 53b. .
- the skimmer 52 and the opening 53a of the scum box 53 having the above-described configuration can prevent the foreign matter removal performance from being deteriorated, and the work for removing the foreign matter attached to the skimmer 52 is unnecessary. be able to.
- the foreign matter dropped into the scum box 53 is dropped into the mesh wire mesh 91 in the filtration tank 9 and dehydrated, and the treatment liquid mixture is filtered.
- the filtered treatment liquid can be circulated from the discharge port 9a at the inner bottom of the filtration tank 9 to the first floating separation tank 31 and reused. Note that the foreign matter in the mesh wire mesh 91 is discarded to the outside.
- the water level of the processing liquid mixture is reduced to prevent the processing liquid mixture from flowing into the scum box 53. It is adjusted to descend below 53b and descends to level F2. As a result, when the skimmer 52 is not working to drop the foreign matter into the scum box 53, the processing liquid mixture does not flow from the foreign matter removal weir 53b into the scum box 53. For this reason, the amount of the processing liquid mixture flowing in the scum box 53 can be reduced.
- the electromagnetic valve V is opened to prevent the processing liquid mixture from being discharged from the scum box 53, and the tank main body 42 is overloaded.
- the electromagnetic valve V When flowing the treatment liquid from the discharge path 85 to the bar flow tank 6 and lowering the water level to the liquid level F2, and discharging foreign matter to the scumbot 53, close the electromagnetic valve V and treat the tank body 42 to the overflow tank 6. The water flow is stopped and the water level is raised to the liquid level F1, and the water level is adjusted so that foreign matter can be smoothly dropped into the scum box 53.
- the second levitation separator 4 is configured to discharge the foreign matter to the filtration tank 9 and remove it during one cycle when the skimmer arm 51 makes one rotation, and to send the purified processing liquid to the overflow tank 6. And the two skimmers 52a, 52b and the water level switching adjusting means 7 are performed twice. For this reason, foreign substances can be discharged (discarded) efficiently, and the amount of processing liquid discarded as wastewater can be greatly reduced.
- the width of the skimmer 52 is longer than the width of the foreign matter removal weir 53b. This When the skimmer 52 passes over the foreign matter removal weir 53b, both sides of the skimmer 52 come into sliding contact with the front ends of the side walls of the scum box 53 located on the left and right sides of the foreign matter removal weir 53b. Because it does not contact the upper surface of 53b, foreign matter should not be crushed and adhered to foreign matter removal weir 53b.
- the treatment liquid is not particularly limited as long as it is a liquid in which foreign matter floats.
- the foreign matter may be liquid or solid, and is not particularly limited as long as it can float by air or the like without buoyancy.
- the levitation separation apparatus and the levitation separation method of the present invention float on the liquid surface. It can be used for any device that removes foreign matter.
- the skimmer detection switches 71 and 72 which are the water level switching adjusting means 7 are not limited to the switches such as the limit switch and the proximity switch, and may be any one that detects the position of the skimmer 52.
- the skimmer detection switches 71 and 72 may detect the skimmer 52 using an encoder, a rotary switch, or the like that detects the rotation angle of the skimmer arm 51, or a light emitting element and a light receiving element.
- skimmers 52a and 52b is not limited to two, and may be appropriately changed depending on the size, processing capability, processing liquid, etc. of the floating separation system A.
- the number of skimmers 52a and 52b may be one, for example.
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Removal Of Floating Material (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007503595A JP4928438B2 (ja) | 2005-02-21 | 2006-01-18 | 浮上分離装置および浮上分離方法 |
CN2006800055968A CN101128396B (zh) | 2005-02-21 | 2006-01-18 | 漂浮分离装置和漂浮分离方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005043635 | 2005-02-21 | ||
JP2005-043635 | 2005-02-21 |
Publications (1)
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WO2006087881A1 true WO2006087881A1 (ja) | 2006-08-24 |
Family
ID=36916292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/300582 WO2006087881A1 (ja) | 2005-02-21 | 2006-01-18 | 浮上分離装置および浮上分離方法 |
Country Status (3)
Country | Link |
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JP (1) | JP4928438B2 (ja) |
CN (1) | CN101128396B (ja) |
WO (1) | WO2006087881A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012127033A (ja) * | 2010-12-17 | 2012-07-05 | Duplo Seiko Corp | 古紙再生処理装置 |
WO2014162050A1 (en) * | 2013-04-05 | 2014-10-09 | Finnchain Oy | Method and apparatus for removal of surface scum |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6912630B1 (ja) * | 2020-06-25 | 2021-08-04 | 株式会社スギノマシン | 液処理装置および液処理方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63143996A (ja) * | 1986-12-09 | 1988-06-16 | Taikisha Ltd | 塗料滓分離捕集装置 |
JPH06269774A (ja) * | 1993-03-17 | 1994-09-27 | Hitachi Plant Eng & Constr Co Ltd | 浮上スカム回収装置 |
JPH09276860A (ja) * | 1996-04-11 | 1997-10-28 | Maezawa Ind Inc | 水位変動用スカム除去装置 |
JP2001079546A (ja) * | 1999-09-10 | 2001-03-27 | Asahi Tec Corp | スカム除去装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2122860U (zh) * | 1992-05-07 | 1992-11-25 | 邓景福 | 浮油收集器 |
JP4016312B2 (ja) * | 2000-03-24 | 2007-12-05 | 株式会社石垣 | 固形物回収装置 |
-
2006
- 2006-01-18 CN CN2006800055968A patent/CN101128396B/zh not_active Expired - Fee Related
- 2006-01-18 WO PCT/JP2006/300582 patent/WO2006087881A1/ja not_active Application Discontinuation
- 2006-01-18 JP JP2007503595A patent/JP4928438B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63143996A (ja) * | 1986-12-09 | 1988-06-16 | Taikisha Ltd | 塗料滓分離捕集装置 |
JPH06269774A (ja) * | 1993-03-17 | 1994-09-27 | Hitachi Plant Eng & Constr Co Ltd | 浮上スカム回収装置 |
JPH09276860A (ja) * | 1996-04-11 | 1997-10-28 | Maezawa Ind Inc | 水位変動用スカム除去装置 |
JP2001079546A (ja) * | 1999-09-10 | 2001-03-27 | Asahi Tec Corp | スカム除去装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012127033A (ja) * | 2010-12-17 | 2012-07-05 | Duplo Seiko Corp | 古紙再生処理装置 |
WO2014162050A1 (en) * | 2013-04-05 | 2014-10-09 | Finnchain Oy | Method and apparatus for removal of surface scum |
Also Published As
Publication number | Publication date |
---|---|
CN101128396B (zh) | 2010-05-19 |
CN101128396A (zh) | 2008-02-20 |
JP4928438B2 (ja) | 2012-05-09 |
JPWO2006087881A1 (ja) | 2008-07-03 |
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