JP6410365B2 - Spray liquid recovery booth - Google Patents

Description

  The present invention relates to a spray liquid recovery booth.

  Conventionally, it is a device for managing the water level of a treatment water tank attached to a painting booth that collects paint mist of spray paint with treated water, and stores a circulating treatment water and has a water supply pipe, and the water tank A detection pipe that is inserted into the stable treated water that has been refluxed and stored and sends out supply air for detecting the water level, and an air pressure discharged from the detection pipe is detected, and the pipe of the water supply pipe is responsive to the detected pressure There is known a water level management device for a painting booth treatment water tank comprising a control device that outputs a signal for controlling opening and closing of a control valve provided therein (see Patent Document 1).

JP 2004-255354 A

  By providing the water level management device described in Patent Document 1 in the paint booth, it is possible to easily maintain the paint booth (spray liquid recovery booth) in a state where the paint mist (spray liquid) recovery efficiency is high. However, there is a problem that treated water overflows when malfunction occurs.

  On the other hand, if the operator checks the water level and replenishes the treated water so as to maintain an appropriate water level, there is a problem that the burden on the operator increases although there is no problem of malfunction.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a spray liquid recovery booth that can reduce the burden on the operator for maintaining the water level in a state where the recovery efficiency of the spray liquid is high. And

The present invention is grasped by the following composition in order to achieve the above-mentioned object.
(1) The spray liquid recovery booth of the present invention is provided with a liquid flow plate having a front surface through which a recovery liquid for recovering a spray liquid sprayed from a spray gun is flowed, and a lower side of the liquid flow plate. A first water tank to be stored; a swirl part that forms a swirl chamber in which the gas containing the spray liquid sucked from below the liquid flow plate and the recovered liquid in the first water tank are in gas-liquid contact; and An exhaust fan that sucks in the gas and winds up the collected liquid in the first water tank so as to bring the gas and the collected liquid in the first water tank into contact with the gas and liquid; and a lower side than the first water tank A second water tank for storing the recovered liquid disposed in the first water tank, wherein the first water tank includes an overflow portion through which the recovered liquid flows out when a predetermined water level is exceeded, and the recovered liquid overflowed from the overflow portion It is accumulated in the serial second water tank.

(2) In the configuration of (1), a third water tank is provided above the liquid flow plate and overflows the recovery liquid so as to supply the recovery liquid to the front surface of the liquid flow plate. The recovered liquid from the second water tank is supplied to the three water tank.

(3) In the configuration of (1) or (2), the first water tank includes a water level adjusting unit that is provided in the overflow unit and adjusts a set water level of the first water tank.

(4) In any one configuration of the above (1) to (3), the position of the spiral portion can be adjusted in a direction orthogonal to the water surface of the first water tank.

(5) In any one of the configurations (1) to (4), a shower nozzle that is disposed in a path from the spiral chamber to the exhaust fan and that discharges the recovered liquid toward the gas is provided. A shower unit is provided, and the recovered liquid of the second water tank is supplied to the shower nozzle.

(6) In the configuration of (5), the shower unit is provided with a plurality of shower nozzles in the gas flow direction.

(7) In the configuration of the above (5) or (6), an eliminator unit provided with an eliminator that is disposed closer to the exhaust fan than the shower unit and separates liquid from gas is provided.

(8) In the configuration of (7), a plurality of eliminators are provided in multiple stages in the gas flow direction in the eliminator section.

  ADVANTAGE OF THE INVENTION According to this invention, the spray liquid collection | recovery booth which can reduce the operator burden for maintaining a water level in the state with high collection efficiency of spray liquid can be provided.

It is sectional drawing of the spray liquid collection | recovery booth of embodiment which concerns on this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view of a spray liquid recovery booth 10 according to an embodiment of the present invention.
The spray liquid recovery booth 10 is a booth for recovering the spray liquid L that could not adhere to the object to be coated O when the spray liquid L such as paint is sprayed from the spray gun S or the like toward the object to be coated O. It is.

For this reason, although not shown, the spray liquid recovery booth 10 is provided with right and left side walls and a ceiling wall that extend toward the object to be coated O (right side in the figure) so as to surround the object to be coated O.
The spray liquid recovery booth 10 has left and right side walls and a ceiling wall extending from the spray liquid recovery booth 10 to the object to be coated O and the spray gun S so as to seal an area including the object to be coated O and the spray gun S. In addition, there may be an entrance side wall that closes the opening formed by the left and right side walls and the ceiling wall.

The spray liquid recovery booth 10 has a front surface that faces the spray gun S, and includes a liquid flow plate 11 on which a recovery liquid 15 that recovers the spray liquid L is flowed to the front surface.
Note that the spray liquid recovery booth 10 is arranged on the rear side of the liquid flow plate 11 and from the lower side to the upper side that guides the flow of gas to the exhaust fan 12 by using the wall surface on the front side of the liquid flow plate 11. An extending duct D is formed, and an exhaust fan 12 is attached to the upper side of the duct D.
In this embodiment, the static pressure of the duct D immediately below the exhaust fan 12 is set to 1200 Pa or more and 1700 Pa or less by the exhaust fan 12.

  In addition, the spray liquid recovery booth 10 is provided below the liquid flow plate 11, provided in the first water tank 13 for storing the recovered liquid 15, and below the liquid flow plate 11, and from the lower side of the liquid flow plate 11. The rear surface of the liquid flow plate 11 is a spiral chamber 14 in which a gas such as air containing the spray liquid L that could not be applied to the sucked object O (see arrow W1) and the recovered liquid 15 of the first water tank 13 are in gas-liquid contact. And a second water tank 16 for storing the recovered liquid 15 disposed below the first water tank 13.

  Further, the spray liquid recovery booth 10 is provided on the upper side of the liquid flow plate 11, from the third water tank 17 in which the recovery liquid 15 overflows so as to supply the recovery liquid 15 to the front surface of the liquid flow plate 11, and the spiral chamber 14. A shower unit 18 provided on a path in the duct D leading to the exhaust fan 12, and provided with a shower nozzle 18a that discharges the recovered liquid 15 toward the gas (see arrow W2) that has passed through the spiral chamber 14, And an eliminator unit 19 provided with an eliminator 19a that separates the liquid from the gas (see arrow W3) that passes through the shower unit 18 and is disposed in the duct D on the exhaust fan 12 side of the shower unit 18.

Hereinafter, while explaining the operation of the spray liquid recovery booth 10 having such a configuration, the configuration and the like will be described in more detail.
The recovered liquid 15 is, for example, water or water added with a coagulant, and the second water tank 16 that is a supply source of the recovered liquid 15 has a sufficient margin in anticipation of a decrease in the recovered liquid 15 due to evaporation or the like. The amount of recovered liquid 15 having water is stored.

  A pump P is provided in the second water tank 16, and the recovered liquid 15 in the second water tank 16 is supplied to the third water tank 17 through the first recovered liquid outlet P 1 out by the pump P, and the second water tank 16 It is sent to the shower nozzle 18a through the recovered liquid outlet P2out.

  The pump P is arranged near the back side of the spray liquid recovery booth 10 in the second water tank 16, and a solidified body of the recovered spray liquid L is supplied to the pump P at the suction port for sucking the recovery liquid 15 of the pump P. A filter F that prevents the suction from being sucked in is provided to prevent clogging of the shower nozzle 18a and the like.

In addition, a maintenance door 30 is provided slightly above the pump P on the back side of the spray liquid recovery booth 10 so that an operation such as replacement of the filter F can be easily performed.
If the maintenance door 30 is positioned on the back side of the spray liquid recovery booth 10 as described above, even when the spray liquid recovery booth 10 is operating, that is, when the spray liquid L is sprayed, the back side is sprayed. Since the liquid L does not come, it is possible to check the degree of clogging of the filter F or the like.

  Further, when the maintenance door 30 is positioned behind the spray liquid recovery booth 10 as described above, the recovery liquid 15 can be added to the second water tank 16 even when the spray liquid recovery booth 10 is operating. It becomes.

  Then, the recovered liquid 15 supplied to the first recovered liquid outlet P1out by the pump P is supplied to the third water tank 17, and when the level of the recovered liquid 15 in the third water tank 17 rises, the surface of the overflow rectifying plate 17a is removed. The recovered liquid 15 is supplied to the upper surface of the front surface of the liquid flow plate 11, and the recovered liquid 15 further flows on the front surface of the liquid flow plate 11 and flows downward.

  Although not limited, the spray liquid recovery booth 10 of the present embodiment includes an overflow rectifying plate 17a that covers up to about half of the overflow rectifying plate 17a on the side where the recovered liquid 15 overflows. The anti-scattering plate 20 arranged slightly apart from the surface is provided, and by doing so, the recovered liquid 15 can flow along the overflow rectifying plate 17a without being scattered.

  As described above, when the recovered liquid 15 is allowed to flow on the front surface of the liquid flow plate 11, the spray liquid L sprayed from the spray gun S does not adhere to the object to be coated O, but directly flows. The spray liquid L flying so as to be sprayed on the front surface of the plate 11 comes into contact with the recovered liquid 15 and is captured by the recovered liquid 15 before contacting the front surface of the liquid flow plate 11. It is avoided that the spray liquid L adheres.

Then, the recovered liquid 15 that has flowed downward through the liquid flow plate 11 is supplied to a first water tank 13 provided below the liquid flow plate 11.
Here, the 1st water tank 13 is provided with the overflow part OF from which the collection | recovery liquid 15 flows out, if the predetermined water level is exceeded, and the 1st water tank 13 sets the preset water level of the 1st water tank 13 provided in this overflow part OF. Since the water level adjusting unit 13a to be adjusted is provided, the water level can be set by moving the water level adjusting unit 13a up and down.

  Therefore, by continuing to supply the recovered liquid 15 from the liquid flow plate 11, the first water tank 13 is in a state exceeding the set water level set by the water level adjusting unit 13a, but the recovered liquid 15 exceeding the set water level is By flowing out from the overflow part OF, the water level of the first water tank 13 is always maintained at the set water level.

Further, the lower end portion of the liquid flow plate 11 on the first water tank 13 side has a sawtooth shape along the width direction (the front-rear direction in the drawing), and the lower end portion of the liquid flow plate 11 and the water surface of the first water tank 13. Alternatively, when a gas such as air containing the spray liquid L is sucked through the gap between the spiral part 14a as shown by an arrow W1, the suction force of the gas causes the recovery liquid 15 near the water surface to Part is peeled off.
In the present embodiment, the vicinity of the lower end of the liquid flow plate 11 is slightly inclined in the gas suction direction, but it is not always necessary to be inclined, and may be straight.

Further, the swirl portion 14a is bent so as to form a curved surface that guides the sucked gas so as to swirl in a swirl shape, so that in the swirl chamber 14, the recovered liquid peeled off from the water surface. 15 and the recovered liquid 15 separated so as to wave along the spiral part 14a.
A part of the recovered liquid 15 dripping from the lower end of the liquid flow plate 11 is also sucked into the spiral chamber 14 side.

Although not shown, the spiral portion 14a of the present embodiment has a leg portion installed in the first water tank 13, and the recovered liquid 15 is wound up by adjusting the height of the leg portion. The state and the swirl state of the gas including the spray liquid L in the swirl chamber 14 and the swollen recovered liquid 15 can be adjusted.
That is, the position of the spiral portion 14a can be adjusted in the direction perpendicular to the water surface of the first water tank 13 so that the gas containing the spray liquid L and the recovered liquid 15 can be appropriately contacted with each other.

  For this reason, in order to make the passage wind speed of the gas which passes the shower part 18 demonstrated later into an appropriate state, when changing the exhaust_gas | exhaustion amount of the exhaust fan 12, the gas flow state of the spiral chamber 14 is affected. Even if adjustment is performed, appropriate gas-liquid contact between the gas containing the spray liquid L and the recovered liquid 15 is performed by adjusting the position of the spiral portion 14a in the direction orthogonal to the water surface of the first water tank 13. Can be realized.

  In the swirl chamber 14, gas-liquid contact between a gas such as air containing the spray liquid L (see arrow W <b> 1) and the recovered liquid 15 of the first water tank 13 is efficiently performed, and the spray liquid L contained in the gas is It is captured by the recovered liquid 15.

  Thus, the recovered liquid 15 that has captured the spray liquid L by gas-liquid contact in the swirl chamber 14 returns to the first water tank 13 again, flows out of the overflow portion OF of the first water tank 13, and returns to the second water tank 16. The spray liquid L coagulated by the effect of the coagulant also flows to the pump P side along the flow of the recovered liquid 15, and the coagulated spray liquid L is collected by the filter F. Will be.

  By the way, in order to enable the recovery liquid 15 to efficiently capture the spray liquid L at the spiral portion 14a, the suction force of the gas generated by the exhaust fan 12 sucks the gas into the spiral chamber 14 and the first water tank 13. It is important that the recovered liquid 15 is rolled up.

  However, even if the exhaust air amount of the exhaust fan 12 is kept constant, if the level of the recovered liquid 15 in the first water tank 13 changes, the distance from the lower end of the liquid flow plate 11 to the water surface of the first water tank 13 is As a result, the suction force changes and the recovered liquid 15 in the first water tank 13 cannot be wound up well.

  More specifically, for example, when the water level rises, the distance between the lower end of the liquid flow plate 11 and the water surface of the first water tank 13 is shortened, and the opening area for sucking the gas becomes too small, the gas is sufficient. Since the suction cannot be performed, the suction force of the gas generated by the exhaust fan 12 is weakened, and the state in which the gas is sucked into the spiral chamber 14 and the recovered liquid 15 in the first water tank 13 is wound up cannot be maintained.

  On the other hand, if the water level falls and the opening area becomes too large, the wind speed of the sucked-in gas will decrease, and the suction force of the gas generated by the exhaust fan 12 will also be weakened. The state where the recovered liquid 15 in the water tank 13 is rolled up cannot be maintained.

  For this reason, the water level of the first water tank 13 is appropriate so that the suction force of the gas generated by the exhaust fan 12 sucks the gas into the spiral chamber 14 and keeps the recovered liquid 15 of the first water tank 13 being wound up. Controlling the water level is important in order not to lower the recovery efficiency of the spray liquid L in the spiral chamber 14.

  Therefore, in the case of the first water tank 13 of the present embodiment, the first water tank 13 can maintain an appropriate water level set in advance as long as the state where the recovered liquid 15 overflows is maintained. It is only necessary to manage to keep the first water tank 13 overflowing.

  That is, the operator has a sufficient water level in the second water tank 16 so that the state in which the water level in the second water tank 16 is too low and the pump P of the second water tank 16 cannot send out the recovered liquid 15 does not occur. You just have to manage it as if

  The second water tank 16 has no problem even if the water level is high as long as the recovered liquid 15 does not overflow from the second water tank 16, so that the management always ensures a sufficient water level. Therefore, management with less burden on the operator is sufficient.

  Next, as described above, the gas in which the spray liquid L is captured by the recovery liquid 15 in the swirl chamber 14 and the content of the spray liquid L is significantly reduced is, as shown by the arrow W2, in the shower unit 18. The recovered liquid 15 discharged in a shower form from the shower nozzle 18 a comes into gas-liquid contact, and most of the spray liquid L contained in the gas is captured by the recovered liquid 15.

Here, as can be seen from the shower unit 18, the size of the duct D of the shower unit 18 is reduced by partially closing the liquid flow plate 11 side with the wall surface H.
For this reason, compared with the gas passing wind speed of the spiral chamber 14 which is set to 15 m / sec or more and 20 m / sec or less, although the passing wind speed is slow, the shower section 18 has a relatively fast passing wind speed of 4 m / sec or more and 7 m or more. A passing wind speed of / sec or less is maintained.

  Moreover, the shower nozzle 18a provided in the shower part 18 is arrange | positioned so that the collection | recovery liquid 15 may be discharge | released in the direction which opposes the flow of gas, and the collection | recovery liquid 15 is discharge | released so that the gas containing the spray liquid L may be attacked. It has become so.

  If the passing air speed at the shower unit 18 is set to be high, the gas passage time is shortened, and at first glance, it seems that the trapping efficiency of the spray liquid L is deteriorated. However, the spray liquid L is actually a fine mist. Therefore, when the relative velocity between the recovery liquid 15 and the spray liquid L is low, the recovery liquid 15 discharged from the shower nozzle 18a in the form of droplets is avoided because the gas flows along the gas flow. The spray liquid L avoids the recovered liquid 15 by riding on the gas flow.

  On the other hand, as in this embodiment, the recovered liquid 15 is discharged so as to attack the gas containing the spray liquid L, and the passing wind speed is set so that the passing wind speed of the gas passing through the shower unit 18 is 4 m / sce or more. When the speed is increased, before the spray liquid L flows so as to avoid the recovered liquid 15, collision with the recovered liquid 15 occurs, and since the collision force is large, the spray liquid L is easily taken into the recovered liquid 15. It becomes possible to increase the recovery rate of L.

In addition, by reducing the size of the duct D of the shower unit 18, it becomes easier to discharge the recovered liquid 15 without gaps in every corner of the duct D, and the recovery rate of the spray liquid L can be further increased. Become.
Therefore, compared with the case where the shower part 18 is provided simply, the recovery rate of the spray liquid L can be made extremely high.

  When the gas passing wind speed in the shower unit 18 is higher than 7 m / sec, the liquid droplet 15 that is discharged from the shower nozzle 18a in a shower shape is strongly squeezed by the gas flow, and the recovery liquid 15 is discharged. Since the state is disturbed and the recovery efficiency of the spray liquid L may be reduced, it is preferable that the shower unit 18 is configured such that the gas passing wind speed is 7 m / sec or less.

  The recovered liquid 15 discharged from the shower nozzle 18a is also supplied to the first water tank 13 through an inclined surface extending from the first water tank 13 provided on the lower side of the shower section 18, and the recovered liquid that has captured the spray liquid L is collected. 15 flows out from the overflow part OF of the first water tank 13, returns to the second water tank 16, and the spray liquid L coagulated by the effect of the coagulant is collected by the filter F.

By the way, in this embodiment, in order to raise the capture | acquisition rate of the spray liquid L, in the shower part 18, the three-stage shower nozzle 18a is arrange | positioned in the gas flow direction, However, In the position from which the gas flow direction differs. The shower nozzle 18a to be arranged is arranged at a position overlapping in a plan view substantially orthogonal to the gas flow direction.
That is, only the position in the gas flow direction is different, and the shower nozzle 18a is arranged so that the position in the horizontal direction is located at the same position.

  Since FIG. 1 is a cross-sectional view seen from the side surface, it does not appear on the drawing, but in the spray liquid recovery booth 10 of the present embodiment, the width for each same height position in the gas flow direction. A plurality of (specifically, five) shower nozzles 18a are arranged at a pitch of 250 mm in the direction (front-rear direction), and the shower nozzles 18a in such a state are positioned at the same position in the horizontal direction. Are provided in three stages.

  As described above, when the shower nozzles 18a arranged in multiple stages in the gas flow direction are positioned at the same position in the horizontal direction, the spray liquid L adheres to the lowermost shower nozzle 18a. However, it becomes difficult for the spray liquid L to adhere to the shower nozzle 18a disposed on the upper side so as to be hidden behind the lower shower nozzle 18a.

  For this reason, the maintenance work for removing the spray liquid L adhering to the shower nozzle 18a may be performed mainly on the shower nozzle 18a arranged at the lowermost side, and the labor of the maintenance work can be greatly improved. It becomes possible.

  Thus, the gas that has passed through the shower unit 18 passes through the eliminator unit 19 provided with the eliminator 19a that separates the liquid from the gas, and the liquid such as the fine spray liquid L and the recovered liquid 15 contained in the gas. Is captured by the eliminator 19 a in the process of passing through the eliminator unit 19, is formed into droplets, and drops downward to supply the recovered liquid 15 including the spray liquid L to the first water tank 13.

  Since the trapping efficiency of the recovered liquid 15 and the like in the eliminator 19a is reduced when the gas passing wind speed in the eliminator 19 is high, in this embodiment, the duct D of the eliminator 19 is compared with the shower 18 in this embodiment. And the passage speed of the gas passing through the eliminator unit 19 is set to 2 m / sec or more and 5 m / sec or less.

  If the size of the duct D of the eliminator section 19 is made larger, it is possible to further reduce the gas passing wind speed. However, since this increases the size of the spray liquid recovery booth 10, this is the case. Considering this, the passing wind speed is preferably set to 2 m / sec or more.

Furthermore, by setting the passing wind speed to 5 m / sec or less, it becomes possible to keep the trapping efficiency of the spray liquid L and the recovered liquid 15 in the eliminator 19a high.
Further, in the present embodiment, the eliminator 19a is provided in two stages in the gas flow direction in order to further increase the efficiency of capturing the spray liquid L and the recovered liquid 15 in the eliminator 19a.

  The gas (see arrow W4) that has passed through the eliminator section 19 is such that the spray liquid L, the recovered liquid 15 and the like have been sufficiently removed, and the gas thus purified passes through the exhaust fan 12. Released outside (see arrow W5).

  By the way, in the spray liquid recovery booth 10 of the present embodiment, since the spray liquid L is largely recovered first in the swirl chamber 14, the maintenance frequency of the shower nozzle 18a can be greatly reduced. Maintenance is not absolutely unnecessary.

For this reason, the maintenance door 31 is provided at a position corresponding to the shower nozzle 18 a on the back side wall forming the duct D on the back side of the spray liquid recovery booth 10.
Since the maintenance door 31 is sized to a position corresponding to the eliminator 19a, it is a maintenance door for maintaining the shower nozzle 18a and the eliminator 19a.

  Here, considering only the functional aspect of collecting the spray liquid L, it is possible to provide the shower nozzle 18a and the eliminator 19a closer to the liquid flow plate 11 side, and to provide a maintenance door on a part of the liquid flow plate 11. is there.

However, if it does so, it will become easy to make a level | step difference etc. in the liquid flow board 11, and there exists a possibility that the spray liquid L may adhere easily there.
On the other hand, by providing the maintenance door 31 on the back side of the spray liquid recovery booth 10 as in this embodiment, it is possible to avoid the spray liquid L from adhering.

In particular, since the lower end of the maintenance door 31 is positioned above the showered portion of the shower unit 18, the spray liquid L is recovered and almost all of the spray liquid L is also collected in the inner portion of the maintenance door 31. Since only the gas that does not contain is brought into contact, the spray liquid L can be further prevented from adhering to the maintenance door 31.
Further, in order to improve the maintainability, in the present embodiment, a drain pipe 33 connected from the bottom surface of the first water tank 13 to the second water tank 16 is provided, and a valve 33 a is provided in the middle of the drain pipe 33. .
For this reason, when cleaning the first water tank 13, the recovered liquid 15 stored in the first water tank 13 can be drained to the second water tank 16 side simply by opening the valve 33a.

  As mentioned above, although this invention has been described based on specific embodiment, this invention is not limited to the said embodiment.

  In the present embodiment, the spiral portion 14a has leg portions (not shown) and is installed on the bottom surface of the first water tank 13. For example, the liquid flow plate 11 is located at the end of the spiral portion 14a in the width direction. An arm for attaching to the liquid flow plate 11 may be provided.

  Further, in the present embodiment, the shower nozzle 18a and the eliminator 19a are provided in three and two stages in the gas flow direction, respectively, but the number of stages may be further increased or decreased.

Further, the recovered liquid 15 overflowing from the overflow portion OF of the first water tank 13 is supplied to the second water tank 16 along the inclined surface, but such an inclined surface may be omitted. Good.
However, scattering of the recovered liquid 15 is less likely to occur if the recovered liquid 15 is gently guided to the second water tank 16 on the inclined surface.
In addition, the lower end portion of the liquid flow plate 11 does not need to be configured by the liquid flow plate 11 itself, and a part for the lower end portion of the liquid flow plate 11 is prepared and attached to the liquid flow plate 11. Also good.

  As described above, the present invention is not limited to the above specific embodiments, and modifications and improvements as appropriate are also included in the technical scope of the present invention. Is clear from the description of the scope of claims.

DESCRIPTION OF SYMBOLS 10 Spraying liquid collection | recovery booth 11 Liquid flow plate 12 Exhaust fan 13 1st water tank 13a Water level control part 14 Swirl chamber 14a Swirl part 15 Collected liquid 16 2nd water tank 17 3rd water tank 17a Overflow baffle plate 18 Shower part 18a Shower nozzle 19 Eliminator part 19a Eliminator 20 Anti-scattering plate 30 Maintenance door 31 Maintenance door 33 Drain pipe 33a Valve D Duct F Filter H Wall L Spray liquid O Coating OF Overflow part P Pump P1out First recovery liquid outlet P2out Second recovery liquid outlet S Spray gun

Claims (7)

A liquid flow plate having a front surface through which the recovered liquid for recovering the spray liquid sprayed from the spray gun flows;
A first water tank provided below the liquid flow plate and storing the recovered liquid;
A swirl part forming a swirl chamber for bringing the gas containing the spray liquid sucked from below the liquid flow plate into gas-liquid contact with the recovered liquid of the first water tank;
An exhaust fan that sucks the gas into the swirl chamber and winds up the recovered liquid in the first water tank to generate a suction force for bringing the gas and the recovered liquid in the first water tank into contact with the gas liquid;
A second water tank for storing the recovered liquid disposed below the first water tank;
A shower unit disposed in a path from the swirl chamber to the exhaust fan, and having a shower nozzle that discharges the recovered liquid toward the gas .
The first water tank includes an overflow part through which the recovered liquid flows when a predetermined water level is exceeded,
The recovered liquid overflowed from the overflow part is stored in the second water tank ,
The shower nozzle, the spray liquid recovery booth the recovering solution of the second water tank is characterized Rukoto supplied. Provided on the upper side of the liquid flow plate, comprising a third water tank in which the recovered liquid overflows so as to supply the recovered liquid to the front surface of the liquid flow plate;
The spray liquid recovery booth according to claim 1, wherein the recovery liquid of the second water tank is supplied to the third water tank.   3. The spray liquid recovery booth according to claim 1, wherein the first water tank includes a water level adjusting unit that is provided in the overflow part and adjusts a set water level of the first water tank. 4.   The spray liquid recovery booth according to any one of claims 1 to 3, wherein the position of the spiral portion can be adjusted in a direction orthogonal to the water surface of the first water tank. The spray liquid recovery booth according to any one of claims 1 to 4, wherein the shower section is provided with a plurality of the shower nozzles in the gas flow direction. The spray liquid according to any one of claims 1 to 5, further comprising an eliminator section disposed on the exhaust fan side of the shower section and provided with an eliminator that separates liquid from gas. Collection booth. The spray liquid recovery booth according to claim 6 , wherein the eliminator section is provided with a plurality of eliminators in multiple stages in the gas flow direction.

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