JP5370121B2 - Waste liquid recovery equipment for coating machines - Google Patents

Description

  The present invention relates to a cleaning waste liquid recovery apparatus for a coating machine that recovers cleaning waste liquid of a coating machine.

In the painting operation of the painting machine, when changing the color of the paint, the supply of the previous color paint to the painting machine is shut off, and cleaning liquid such as thinner and air are alternately introduced into the painting machine. Then, the paint of the previous color remaining in the coating machine is washed away, and the inside of the paint supply path is washed. Then, the next color paint is supplied to the coating machine and the next coating is performed.
In recent years, in order to reduce VOC (volatile organic compound) emissions due to global environmental problems, cleaning waste liquid containing organic solvents such as thinner discharged from a coating machine after cleaning has been collected. ing.

The recovery of the cleaning waste liquid is performed using, for example, a cleaning waste liquid recovery device of a coating machine as shown in Patent Document 1.
This cleaning liquid recovery device introduces the mist-like cleaning waste liquid discharged from the coating machine through the opening of the upper lid, and then contacts the pyramid-shaped reflector in the recovery box to recover the cleaning waste liquid that has become liquid. It is comprised so that it may collect | recover from the discharge port provided in the bottom part.

JP 2003-80132 A

However, the cleaning waste liquid recovery apparatus of Patent Document 1 has the following problems.
That is, when the mist-like cleaning waste liquid is discharged into the recovery box, the internal pressure of the recovery box increases. On the other hand, an air vent hole is provided on the side of the recovery box to exhaust the air in the lateral direction. However, with such a structure, the pressure in the recovery box cannot be sufficiently reduced. Therefore, the mist-like cleaning waste liquid discharged into the recovery box is repelled by the internal pressure of the recovery box and discharged from the opening of the upper lid to the outside, and the recovery of the cleaning waste liquid is insufficient. In addition, when the mist-like cleaning waste liquid is discharged to the outside, the cleaning waste liquid may adhere to peripheral devices, painting objects, and the like.
In addition, the structure that exhausts in the lateral direction increases the size of the apparatus in the lateral direction, and securing the installation space has been a problem.

  The present invention has been made in view of such conventional problems, and efficiently collects the cleaning waste liquid and prevents the cleaning waste liquid from adhering to peripheral devices, coating objects, etc., and also reduces the size of the apparatus. It is an object of the present invention to provide a cleaning liquid recovery device for a coating machine that can be used.

The present invention is a cleaning waste liquid recovery device for a coating machine having a box-shaped recovery unit for recovering the cleaning waste liquid of the coating machine,
The ceiling of the recovery unit is provided with an introduction opening for introducing the mist-like cleaning waste liquid discharged from the discharge port of the coating machine,
An exhaust opening provided at the bottom of the recovery part is provided with a storage part for storing the cleaning waste liquid recovered in the recovery part, and an exhaust means for sucking and discharging the air in the recovery part inside the storage part And
The recovery section is formed so as to spread downward from a vertex existing on a vertical line passing through the introduction opening, and brought into contact with the mist-like cleaning waste liquid introduced from the introduction opening. An umbrella-shaped contact body having a contact surface is provided,
The outer end of the umbrella-shaped contact body is disposed outside the opening end of the exhaust opening, and between the lower end of the umbrella-shaped contact body and the upper end of the opening end of the exhaust opening, A cleaning waste liquid recovery apparatus for a coating machine, characterized in that a gap is provided (claim 1).

  In the cleaning waste liquid recovery apparatus of the present invention, the umbrella contact body having the contact surface with which the cleaning waste liquid is brought into contact is provided below the introduction opening of the recovery part. Therefore, the mist-like cleaning waste liquid discharged from the discharge port of the coating machine and introduced into the recovery unit from the introduction opening is the contact surface of the umbrella-shaped contact body, and further the inner wall surface of the recovery unit , It becomes liquid and flows down to the storage part at the bottom of the recovery part and is recovered. Thus, the cleaning waste liquid can be efficiently recovered by positively bringing the mist cleaning waste liquid into contact with each other to form a liquid.

Further, the exhaust opening provided with the exhaust means is provided at the bottom of the recovery unit. For this reason, the inside of the recovery unit can always be in a negative pressure state, and even if the mist-like cleaning waste liquid is introduced into the recovery unit, an increase in the internal pressure of the recovery unit can be prevented. As a result, the cleaning waste liquid once introduced into the recovery section is discharged to the outside from the introduction opening due to the internal pressure of the recovery section, or a part of the mist-like cleaning waste liquid rebounds near the introduction opening. It is possible to prevent the cleaning waste liquid from adhering to peripheral devices, painting objects, and the like.
In addition, by adopting a structure that exhausts downward, the lateral physique of the device can be reduced. Thereby, size reduction of an apparatus can be achieved and securing of installation space becomes easy.

  The outer end of the umbrella-shaped contact body is disposed outside the opening end of the exhaust opening, and is between the lower end of the umbrella-shaped contact body and the upper end of the opening end of the exhaust opening. Is provided with a gap. That is, the umbrella-shaped contact body is disposed so as to cover the exhaust opening above the exhaust opening. Therefore, the air in the recovery part passes from the introduction opening to the outside of the umbrella-shaped contact body, wraps around from the lower side of the umbrella-shaped contact body to the inside of the umbrella-shaped contact body, and further It flows to the exhaust opening through a gap between the lower end of the contact body and the upper end of the open end of the exhaust opening.

  As a result, the air flow path from the introduction opening to the exhaust opening in the recovery unit has a non-linear structure as described above, and the mist-like cleaning waste liquid is increased in contact with the recovery unit. Can do. Therefore, it is possible to suppress the mist-like cleaning waste liquid from being directly discharged from the exhaust opening together with air without being recovered, and the recovery efficiency of the cleaning waste liquid can be increased.

  As described above, according to the present invention, the cleaning of the coating machine can efficiently recover the cleaning waste liquid and prevent the cleaning waste liquid from adhering to peripheral devices, coating objects, and the like, and can reduce the size of the apparatus. A waste liquid recovery apparatus can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram illustrating the overall structure of a cleaning waste liquid recovery apparatus in Embodiment 1. The perspective view which shows the umbrella-shaped contact body in Example 1. FIG. The side view which shows the umbrella-shaped contact body in Example 1. FIG. FIG. 3 is an explanatory diagram illustrating a configuration in which an exhaust fan is provided at an exhaust opening in the first embodiment. Explanatory drawing which shows the structure which the exhaust_gas | exhaustion means of the washing | cleaning waste liquid collection | recovery apparatus also serves as the exhaust_gas | exhaustion means of the washing waste liquid apparatus in Example 2.

  In the present invention, the exhaust opening provided with the exhaust means is provided at the bottom of the recovery unit. The exhaust opening may be provided at one or a plurality of locations at the bottom of the recovery unit. If the exhaust opening is provided at one location, the apparatus can be further reduced in size.

  Moreover, the said umbrella-shaped contact body has the said contact surface formed so that it may spread toward the downward direction from the vertex part under the said introduction opening part, and is comprised in the shape of an umbrella. The inside of the umbrella-shaped contact body can be configured to be hollow, or at least a part thereof can be configured to be solid.

Moreover, it is preferable that the said vertex part of the said umbrella-shaped contact body exists on the same axis | shaft in the perpendicular direction with the center of the said introduction opening part of the said collection | recovery part.
In this case, the mist-like cleaning waste liquid introduced from the introduction opening portion into the recovery portion can be easily brought into contact with the contact surface of the umbrella-shaped contact body.

Further, when the cleaning waste liquid is discharged from the discharge port of the coating machine, the discharge port of the coating machine is perpendicular to the top of the umbrella-shaped contact body and the center of the introduction opening of the recovery unit. It is preferable that the cleaning waste liquid is discharged from the discharge port of the coating machine toward the introduction opening of the recovery unit.
In this case, the mist-like cleaning waste liquid discharged from the discharge port of the coating machine can be easily introduced into the recovery unit from the introduction opening, and can be easily brought into contact with the contact surface of the umbrella-shaped contact body. . Further, since the discharged mist-like cleaning waste liquid comes into contact with the contact surface around the top of the umbrella-shaped contact body, the cleaning waste liquid easily flows toward the outer end of the umbrella-shaped contact body. . Thereby, the contact property of the said cleaning waste liquid can be improved, and a rebound can be suppressed.

Moreover, it is preferable that the lower end of the umbrella-shaped contact body is disposed outside the opening end of the exhaust opening.
In this case, it is possible to more reliably guide the cleaning waste liquid that has become liquid as a result of contact with the contact surface of the umbrella-shaped contact body to the storage section at the bottom of the recovery section. Thereby, the recovery efficiency of the cleaning waste liquid can be further increased.

  Further, even if the outer end of the umbrella-shaped contact body is outside the opening end of the exhaust opening, the lower end of the umbrella-shaped contact body is inside the opening end of the exhaust opening, In some cases, the cleaning waste liquid that has become liquid may flow from the lower end of the umbrella-shaped contact body to the exhaust opening and may not be recovered. This can be prevented by disposing the lower end of the umbrella-shaped contact body outside the opening end of the exhaust opening as described above.

Moreover, it is preferable that the lower end of the umbrella-shaped contact body is disposed below the upper end of the opening end of the exhaust opening (claim 2).
In this case, the air flow path in the recovery unit can be made to have a more complicated structure, and the chance of the mist-like cleaning waste liquid contacting in the recovery unit can be further increased. Thereby, the recovery efficiency of the cleaning waste liquid can be further increased. Further, by arranging the lower end of the umbrella-shaped contact body below the upper end of the opening end of the exhaust opening, the air passing through the gap between the two flows upward. That is, a portion in which air flows upward in the air flow path is formed. Thereby, it is possible to prevent the cleaning waste liquid from being discharged from the exhaust opening together with the air in the flow of air.

Moreover, it is preferable that the contact surface of the umbrella-shaped contact body is formed in a plurality of steps so that an inclination angle increases stepwise from the apex portion downward.
In this case, the area of the contact surface can be increased as compared with the case where the inclination angle of the contact surface is constant. Therefore, the mist-like cleaning waste liquid introduced into the recovery unit can be further brought into contact with the contact surface of the umbrella-shaped contact body. Thereby, the recovery efficiency of the cleaning waste liquid can be further increased. In addition, the mist-like washing waste liquid easily flows along the contact surface of the umbrella-shaped contact body. Therefore, the contact property of the cleaning waste liquid can be improved and the rebound can be suppressed.

Further, the cleaning waste liquid recovery device is installed in a painting booth provided with an indoor exhaust means for sucking and exhausting indoor air, and the indoor exhaust means sucks and exhausts air in the recovery section. It is preferable that it also serves as the exhaust means (claim 4).
In this case, exhaust / depressurization in the recovery unit can be performed with existing equipment, power, etc. without using new equipment, power, etc.

Example 1
A washing machine liquid recovery apparatus for a coating machine according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the cleaning waste liquid recovery apparatus 1 of this example includes a box-shaped recovery unit 2 that recovers the cleaning waste liquid L of the coating machine 4. The ceiling portion 201 of the recovery unit 2 is provided with an introduction opening 21 for introducing the mist-like cleaning waste liquid L discharged from the discharge port 41 of the coating machine 4, and the recovery unit 2 is provided at the bottom 203 of the recovery unit 2. A storage part 22 for storing the cleaning waste liquid L collected inside, and an exhaust opening part 23 provided with exhaust means 24 for sucking and discharging the air A in the recovery part 2 inside the storage part 22 are provided. Yes.

Inside the recovery unit 2, the mist-like cleaning waste liquid L formed from the apex portion 31 existing on the vertical line passing through the introduction opening 21 and extending downward is brought into contact with the recovery opening 2. An umbrella-like contact body 3 having a contact surface 32 is provided.
The outer end 301 of the umbrella-shaped contact body 3 is arranged outside the opening end 231 of the exhaust opening 23, and the lower end 302 of the umbrella-shaped contact body 3 and the upper end 232 of the opening end 231 of the exhaust opening 23 are arranged. A gap 293 is provided between them.
This will be described in detail below.

As shown in FIG. 1, the cleaning waste liquid recovery apparatus 1 of this example has a box-shaped recovery unit 2 that recovers the cleaning waste liquid L of the coating machine 4.
In the central part of the ceiling part 201 in the recovery part 2, an introduction opening 21 for introducing the mist-like cleaning waste liquid L discharged from the discharge port 41 of the coating machine 4 is provided. A cylindrical standing portion 25 is provided around the introduction opening 21 so as to stand downward from the ceiling portion 201.
Moreover, the side part 202 of the collection | recovery part 2 is comprised combining the cylindrical small diameter side part 202a and the large diameter side part 202b. A gap 291 is provided between the small-diameter side surface portion 202a and the large-diameter side surface portion 202b and the umbrella-like contact body 3 described later.

  Further, a storage unit 22 for storing the cleaning waste liquid L recovered in the recovery unit 2 is provided on the outer peripheral portion of the bottom 203 in the recovery unit 2. The storage unit 22 is provided with a discharge pipe 221 for discharging the cleaning waste liquid L. The discharge pipe 221 is connected to a collection tank (not shown) that collects the cleaning waste liquid L.

  Further, an exhaust opening 23 is provided at the center of the bottom 203 in the collection unit 2 (inside the storage unit 22). The exhaust opening 23 and the storage part 22 are partitioned by a cylindrical partition part 26 erected upward from the bottom part 203 of the recovery part 2. The exhaust opening 23 is provided with exhaust means 24. In this example, a suction duct 241 as the exhaust means 24 is provided. The suction duct 241 is configured so that the air A in the collection unit 2 can be sucked and discharged using an exhaust fan (not shown).

  In addition, an umbrella-like contact body 3 is disposed inside the collection unit 2. The umbrella-shaped contact body 3 has a contact surface 32 formed so as to spread downward from a vertex 31 existing on a vertical line passing through the introduction opening 21. Here, the apex 31 is coaxial with the center B of the introduction opening 21 in the vertical direction (on the X axis). Further, the contact surface 32 is formed in a plurality of stages so that the inclination angle gradually increases downward from the apex portion 31.

Specifically, as shown in FIGS. 2 and 3, the umbrella-shaped contact body 3 includes a conical first contact body 3 a having a lower opening and a truncated cone-shaped second contact having a lower opening. It is comprised by the body 3b and the cylindrical 3rd contact body 3c. The second contact body 3b and the third contact body 3c are integrally formed.
The contact surface 32 is a first contact surface 321 that is an outer surface of the first contact body 3a, a second contact surface 322 that is an outer surface of the second contact body 3b, and an outer surface of the third contact body 3c. A third contact surface 323 is included. The inclination angle increases in the order of the first contact surface 321, the second contact surface 322, and the third contact surface 323. The third contact surface 323 is formed in the vertical direction.

  Moreover, as shown in FIG. 3, the 1st corner | angular part 331 which the 1st contact surface 321 of the 1st contact body 3a and the 2nd contact surface 322 of the 2nd contact body 3b comprise, and the 2nd contact surface of the 2nd contact body 3b The second corner portion 332 formed by the second contact portion 322 and the third contact surface 323 of the third contact body 3c and the lower end 302 of the umbrella contact body 3 are coaxial with the apex portion 31 of the umbrella contact body 3 in the vertical direction (X axis). It is disposed so as to be inscribed in the spherical surface 51 centered on the point C located on the upper side and below the second corner portion 332.

Further, as shown in FIG. 1, the outer end 301 of the umbrella-like contact body 3 (in this example, the third contact surface 323 hits the third contact surface 323) is disposed outside the opening end 231 of the exhaust opening 23. Has been.
Further, the lower end 302 of the umbrella-shaped contact body 3 is disposed outside the opening end 231 of the exhaust opening 23 and is disposed below the upper end 232 of the opening end 231 of the exhaust opening 23.
In addition, gaps 292 and 293 are provided between the lower end 302 of the umbrella-shaped contact body 3 and the bottom 203 of the collection unit 2 and the upper end 232 of the opening end 231 of the exhaust opening 23, respectively.

Next, the recovery operation of the cleaning waste liquid L using the cleaning waste liquid recovery apparatus 1 of this example will be described with reference to FIG.
When changing the color of the paint in the coating machine 4, a cleaning liquid such as thinner is supplied to the coating machine 4, the paint remaining in the coating machine 4 is washed away, and the inside of the paint supply path is washed. Next, air is supplied to the coating machine 4, and the cleaning waste liquid L including the paint and the cleaning liquid is discharged from the discharge port 41 of the coating machine 4. This is repeated a plurality of times to clean the coating machine 4.

Then, when discharging the cleaning waste liquid L from the discharge port 41 of the coating machine 4, first, the coating machine 4 is disposed above the introduction opening 21 of the collection unit 2. At this time, the discharge port 41 of the coating machine 4 and the center B of the introduction opening 21 of the collection unit 2 are coaxially (on the X axis) in the vertical direction.
The collection unit 2 is in a state in which the internal air A is sucked from the exhaust opening 23 by the exhaust unit 24. Thereby, the inside of the collection unit 2 is always in a negative pressure state. At this time, the air A in the recovery unit 2 passes through the outside (gap 291) of the umbrella-like contact body 3 from the introduction opening 21 and passes through the lower side (gap 292) of the lower end 302 of the umbrella-like contact body 3. Then, the air flows into the exhaust opening 23 through the gap 293 between the lower end 302 of the umbrella-shaped contact 3 and the upper end 232 of the opening end 231 of the exhaust opening 23.

Next, the cleaning waste liquid L is discharged from the discharge port 41 of the coating machine 4. As a result, the mist-like cleaning waste liquid L is introduced into the collection unit 2 from the introduction opening 21.
The mist-like cleaning waste liquid L introduced into the recovery unit 2 comes into contact with the contact surface 32 of the umbrella-like contact body 3, becomes liquid, travels through the contact surface 32, and is stored from the lower end 302 of the umbrella-like contact body 3. It flows down to the part 22.
Further, the mist-like cleaning waste liquid L that has not come into contact with the contact surface 32 of the umbrella-shaped contact body 3 comes into contact with the inner wall surface 200 (such as the inner wall surface of the side surface portion 202) of the recovery unit 2 and becomes liquid. It flows along the inner wall surface 200 and flows down to the storage part 22.

In addition, the mist-like cleaning waste liquid L that has entered the umbrella-shaped contact body 3 in the air A flow flows into the inner side surface 34 of the umbrella-shaped contact body 3 (the second contact body 3b and the third contact body 3c). In contact with the inner side surface) and the like, is transferred to the storage unit 22 from the lower end 302 of the umbrella-shaped contact body 3 through the inner side surface 34 of the umbrella-shaped contact body 3 and the like. Moreover, it contacts the outer peripheral surface 261 of the partition part 26 of the bottom part 203 of the collection | recovery part 2, becomes liquid state, flows along the outer peripheral surface 261, and flows down to the storage part 22. FIG.
The cleaning waste liquid L collected in the storage unit 22 is sent to a recovery tank (not shown) through the discharge pipe 221. Thereby, the cleaning waste liquid L is collected.

Next, the function and effect of the cleaning waste liquid recovery apparatus 1 of this example will be described.
In the cleaning waste liquid recovery apparatus 1 of this example, an umbrella-like contact body 3 having a contact surface 32 with which the cleaning waste liquid L is brought into contact is provided below the introduction opening 21 of the recovery unit 2. Therefore, the mist-like cleaning waste liquid L discharged from the discharge port 41 of the coating machine 4 and introduced into the recovery unit 2 from the introduction opening 21 is contacted with the contact surface 32 of the umbrella-shaped contact body 3 and further on the recovery unit 2. By coming into contact with the inner wall surface 200, it becomes liquid and flows down to the storage unit 22 at the bottom 203 of the recovery unit 2 and is recovered. Thus, the cleaning waste liquid L can be efficiently recovered by positively bringing the mist-like cleaning waste liquid L into contact with the liquid to make it liquid.

  Further, an exhaust opening 23 having an exhaust means 24 is provided at the bottom 203 of the recovery unit 2. Therefore, the inside of the collection unit 2 can always be in a negative pressure state, and even if the mist-like cleaning waste liquid L is introduced into the collection unit 2, an increase in the internal pressure of the collection unit 2 can be prevented. As a result, the cleaning waste liquid L once introduced into the recovery unit 2 is discharged to the outside from the introduction opening 21 due to the internal pressure of the recovery unit 2, or a part of the mist-like cleaning waste liquid L near the introduction opening 21. It is possible to suppress rebounding, and it is possible to prevent the cleaning waste liquid L from adhering to peripheral devices, painting objects, and the like.

  Further, by adopting a structure for exhausting downward, the lateral physique of the apparatus can be made smaller than in the conventional structure for exhausting in the lateral direction. Thereby, size reduction of an apparatus can be achieved and securing of installation space becomes easy. In this example, since the exhaust opening 23 is provided in one place on the bottom 203 of the recovery unit 2, the apparatus can be further reduced in size.

  The outer end 301 of the umbrella-shaped contact body 3 is disposed outside the opening end 231 of the exhaust opening 23, and the lower end 302 of the umbrella-shaped contact body 3 and the upper end 232 of the opening end 231 of the exhaust opening 23. A gap 293 is provided between the two. That is, the umbrella-shaped contact body 3 is disposed above the exhaust opening 23 so as to cover the exhaust opening 23. Therefore, the air A in the collection unit 2 passes through the outside (gap 291) of the umbrella-shaped contact body 3 from the introduction opening 21 and passes through the lower side 302 (gap 292) of the umbrella-shaped contact body 3 to form an umbrella shape. It wraps around the inside of the contact body 3 and flows to the exhaust opening 23 through a gap 293 between the lower end 302 of the umbrella-shaped contact body 3 and the upper end 232 of the open end 231 of the exhaust opening 23.

  As a result, the air flow path from the introduction opening 21 to the exhaust opening 23 in the recovery unit 2 has a non-linear structure as described above, and the opportunity for the mist-like cleaning waste liquid L to contact in the recovery unit 2 is obtained. Can be increased. Therefore, it is possible to suppress the mist-like cleaning waste liquid L from being directly discharged from the exhaust opening 23 together with the air A without being recovered, and the recovery efficiency of the cleaning waste liquid L can be increased.

  In this example, the apex 31 of the umbrella-like contact body 3 is coaxial with the center B of the introduction opening 21 of the recovery unit 2 in the vertical direction (on the X axis). Therefore, the mist-like cleaning waste liquid L introduced into the collection unit 2 from the introduction opening 21 is easily brought into contact with the contact surface 32 of the umbrella-shaped contact body 3.

  Further, when the cleaning waste liquid L is discharged from the discharge port 41 of the coating machine 4, the discharge port 41 of the coating machine 4 is placed at the center of the apex 31 of the umbrella-like contact body 3 and the introduction opening 21 of the collection unit 2. B is arranged coaxially (on the X axis) in the vertical direction, and the cleaning waste liquid L is discharged from the discharge port 41 of the coating machine 4 toward the introduction opening 21 of the recovery unit 2. Therefore, the cleaning waste liquid L discharged from the discharge port 41 of the coating machine 4 can be easily introduced into the collection unit 2 from the introduction opening 21 and can be easily brought into contact with the contact surface 32 of the umbrella-like contact body 3. Further, since the discharged mist-like cleaning waste liquid L comes into contact with the contact surface 32 around the apex portion 31 of the umbrella-shaped contact body 3, the cleaning waste liquid L easily flows toward the outer end 301 of the umbrella-shaped contact body 3. Become. Thereby, the contact property of the cleaning waste liquid L can be improved and the rebound can be suppressed.

  Further, the lower end 302 of the umbrella-shaped contact body 3 is disposed outside the opening end 231 of the exhaust opening 23. Therefore, it is possible to more reliably guide the cleaning waste liquid L that has been brought into a liquid state upon contact with the contact surface 32 of the umbrella-shaped contact body 3 to the storage unit 22 of the bottom 203 of the recovery unit 2. Thereby, the recovery rate of the cleaning waste liquid L can be further increased.

  In addition, the lower end 302 of the umbrella-like contact body 3 is disposed below the upper end 232 of the opening end 231 of the exhaust opening 23. Therefore, the air flow path in the collection unit 2 can have a more complicated structure, and the chance that the mist-like cleaning waste liquid L contacts in the collection unit 2 can be further increased. Thereby, the collection | recovery efficiency of the washing waste liquid L can further be improved. Further, by disposing the lower end 302 of the umbrella-shaped contact body 3 below the upper end 232 of the opening end 231 of the exhaust opening 23, the air A passing through the gap 293 therebetween flows upward. become. That is, a portion where the air A flows upward is formed in the air flow path. Thereby, it is possible to prevent the cleaning waste liquid L from being discharged from the exhaust opening 23 together with the air A in the flow of the air A.

  Further, the contact surface 32 of the umbrella-shaped contact body 3 is formed in a plurality of stages so that the inclination angle gradually increases from the apex portion 31 downward. Therefore, the area of the contact surface 32 can be increased compared to the case where the inclination angle of the contact surface 32 is constant. Thereby, the mist-like cleaning waste liquid L introduced into the recovery unit 2 can be further brought into contact with the contact surface 32 of the umbrella-shaped contact body 3, and the recovery efficiency of the cleaning waste liquid L can be further increased. Further, the mist-like cleaning waste liquid L easily flows along the contact surface 32 of the umbrella-like contact body 3. Therefore, the contact property of the cleaning waste liquid L can be improved and the rebound can be suppressed.

  Furthermore, in this example, as shown in FIG. 3, the first corner portion 331, the second corner portion 332, and the lower end 302 of the umbrella-shaped contact body 3 on the contact surface 32 of the umbrella-shaped contact body 3 are in the spherical surface 51. It is arranged to touch. Therefore, the mist-like cleaning waste liquid L discharged from the discharge port 41 of the coating machine 4 becomes easier to flow along the contact surface 32 of the umbrella-shaped contact body 3. Thereby, the contact property of the cleaning waste liquid L can be further improved and the rebound can be further suppressed.

  Thus, according to this example, the coating machine can efficiently recover the cleaning waste liquid L, prevent the cleaning waste liquid L from adhering to peripheral devices, coating objects, etc., and reduce the size of the apparatus. 4 cleaning liquid recovery apparatus 1 can be provided.

  In this example, as shown in FIG. 1, a suction duct 241 as an exhaust means 24 is provided in the exhaust opening 23, and the air A in the recovery unit 2 is sucked and discharged using an exhaust fan (not shown). However, for example, as shown in FIG. 4, an exhaust fan 242 may be provided directly in the exhaust opening 23 so that the air A in the recovery unit 2 can be sucked and discharged. .

(Example 2)
This example is an example in which the configuration of the exhaust means of the cleaning liquid recovery device of the coating machine is changed.
As shown in FIG. 5, the cleaning waste liquid recovery apparatus 1 of this example is disposed in a coating booth 53 of the coating unit 5.
The coating unit 5 introduces air A supplied through an air supply duct 63 to be described later to adjust the pressure, and a dynamic pressure chamber 51 and a static pressure chamber 52, and the coating object 4 using the coating machine 4. A paint booth 53 that performs painting, a paint collection chamber 54 that collects paint that has not been painted in the paint booth 53, and a paint collection chamber 55 that collects the paint collected in the paint collection chamber 54 are provided.

An air supply duct 63 including an air supply fan 62 is connected to the dynamic pressure chamber 51 of the painting unit 5. The air supply duct 63 is connected to an air conditioner 61 that introduces outside air (air A) and performs air conditioning. The air A conditioned in the air conditioner 61 is supplied from the supply duct 63 to the dynamic pressure chamber 51 of the coating unit 5 by the supply fan 62, and further passes through the static pressure chamber 52 and is sent to the coating booth 53. .
In addition, an exhaust duct 64 having an exhaust fan 65 is connected to the paint recovery chamber 55 of the coating unit 5. The air A in the painting booth 53 is sent to the exhaust duct 64 through the paint collection chamber 54 and the paint collection chamber 55 in this order by the exhaust fan 65, and is discharged to the outside.

In the coating unit 5, the paint collection chamber 54 is not painted in the painting booth 53, and the paint that has passed through the slats 531 is mixed with the paint collection water 541, and the paint mixture 542 is sucked from the suction port 543. After that, it is configured so that it can be sent to the paint recovery chamber 55 in the form of a mist.
The paint collection chamber 55 separates the mist-like paint mixture 542 sent from the paint collection chamber 54 into paint T and air A by an baffle plate (eliminator) 551, and collects the paint T in the paint collection unit 552. The air A can be sent to the exhaust duct 64. In addition, the paint T collected in the paint collection unit 552 is sent to the paint collection tank 66.
The paint collection tank 66 is configured to be able to send paint collection water 541 from the paint T collected using the circulation pump 67 to the paint collection chamber 54.

  The recovery unit 2 of the cleaning waste liquid recovery apparatus 1 is installed on the slats 531 in the painting booth 53. A suction duct 241 provided below the exhaust opening 23 (see FIG. 1) of the recovery unit 2 passes through the paint collection chamber 54 and is connected to the exhaust duct 64. Thus, the air A in the collection unit 2 can be sucked through the suction duct 241 by using the suction force of the exhaust duct 64 by the exhaust fan 65. That is, the air A in the collection unit 2 is sucked by the suction duct 241, the exhaust duct 64, and the exhaust fan 65 as the exhaust means 24, and is discharged to the outside.

Next, the function and effect of the cleaning waste liquid recovery apparatus 1 of this example will be described.
The cleaning waste liquid recovery apparatus 1 of this example is installed in a painting booth 53 provided with indoor exhaust means (exhaust duct 64, exhaust fan 65) that sucks and discharges air A in the room (in the painting booth 53). . The indoor exhaust means (the exhaust duct 64 and the exhaust fan 65) also serves as the exhaust means 24 that sucks and exhausts the air A in the recovery unit 2. Therefore, the exhaust / depressurization in the collection unit 2 can be performed using existing equipment, power, etc., without using new equipment, power, etc.
The other functions and effects are the same as those of the first embodiment.

  In this example, as shown in FIG. 5, the suction duct 241 provided below the recovery unit 2 of the cleaning waste liquid recovery apparatus 1 is connected to the exhaust duct 64. For example, the suction duct 241 is connected to the recovery unit. It can also be set as the structure extended from the 2 to the vicinity of the suction inlet 543 vertically downward. In this case, the air A in the collection unit 2 can be sucked from the suction port 543 to the paint collection chamber 55 through the suction duct 241 by using the suction force of the paint collection chamber 55 set to a negative pressure.

  Further, without providing the suction duct 241, the recovery unit 2 of the cleaning waste liquid recovery apparatus 1 is disposed in the vicinity of the suction port 543, specifically, below the slats 531 of the coating booth 53 and directly above the suction port 543. It can also be set as the structure to do. In this case, the air A in the recovery unit 2 can be directly sucked into the paint recovery chamber 55 from the suction port 543 by using the suction force of the negative pressure paint recovery chamber 55.

DESCRIPTION OF SYMBOLS 1 Washing waste liquid collection apparatus 2 Collection | recovery part 201 Ceiling part 203 Bottom part 21 Introduction opening part 22 Storage part 23 Exhaust opening part 231 Open end 232 Upper end (upper end of open end)
24 Exhaust means 293 Gap 3 Umbrella-shaped contact body 301 Outer end (outer end of umbrella-shaped contact body)
302 Lower end (lower end of umbrella-shaped contact body)
31 Vertex 32 Contact surface 4 Coating machine 41 Discharge port A Air L Cleaning waste liquid

Claims (4)

A washing machine cleaning liquid recovery device having a box-shaped recovery unit that collects cleaning machine waste liquid,
The ceiling of the recovery unit is provided with an introduction opening for introducing the mist-like cleaning waste liquid discharged from the discharge port of the coating machine,
An exhaust opening provided at the bottom of the recovery part is provided with a storage part for storing the cleaning waste liquid recovered in the recovery part, and an exhaust means for sucking and discharging the air in the recovery part inside the storage part And
The recovery section is formed so as to spread downward from a vertex existing on a vertical line passing through the introduction opening, and brought into contact with the mist-like cleaning waste liquid introduced from the introduction opening. An umbrella-shaped contact body having a contact surface is provided,
The outer end of the umbrella-shaped contact body is disposed outside the opening end of the exhaust opening, and between the lower end of the umbrella-shaped contact body and the upper end of the opening end of the exhaust opening, A cleaning liquid recovery device for a coating machine, characterized in that a gap is provided.   The cleaning waste liquid recovery apparatus for a coating machine according to claim 1, wherein a lower end of the umbrella-shaped contact body is disposed below an upper end of the opening end of the exhaust opening. Cleaning waste liquid recovery device.   3. The cleaning waste liquid recovery apparatus for a coating machine according to claim 1 or 2, wherein the contact surface of the umbrella-shaped contact body is formed in a plurality of stages so that an inclination angle gradually increases downward from the apex portion. Waste liquid recovery equipment for coating machines.   The cleaning waste liquid recovery apparatus for a coating machine according to any one of claims 1 to 3, wherein the cleaning waste liquid recovery apparatus is installed in a coating booth provided with an indoor exhaust means for sucking and discharging indoor air. The cleaning exhaust liquid recovery apparatus for a coating machine, wherein the indoor exhaust means also serves as the exhaust means for sucking and discharging the air in the recovery section.

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