JP2587670Y2 - Paint mist separation device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating liquid cleaning technology for a coating facility which is configured to trap paint mist in the air discharged from a coating booth in a cleaning liquid. In order to separate and recover the paint mist as sludge from, a separation tank is provided for receiving the cleaning liquid that has captured the paint mist, turning the paint mist in the cleaning liquid into a sludge and separating the paint mist, and separating the floated paint sludge in the separation tank. The present invention relates to a paint mist treatment device provided with a sludge discharge device that discharges to a sludge collection section.

[0002]

2. Description of the Related Art In general, the above-mentioned sludge discharging device includes a device such as a scraper for scraping up paint sludge in a separation tank and discharging it to a collecting section, and a scooping device for scooping paint sludge and discharging it to a collecting section. , And an actuator for driving the actuator. Conventionally, to construct a sludge discharge device from such multiple devices and equipment, multiple devices and devices are separately installed in a separation tank and a painting booth that discharges the cleaning liquid that has captured the paint mist to the separation tank. I was

[0003]

However, according to the above-mentioned conventional technique, since various equipments are separately mounted on a separation tank or the like, the sludge treatment apparatus is removed by removing the equipments. As a result, maintenance can be performed on each device and equipment individually, but in order to test whether it functions as the entire sludge discharge device, each device and device must be assembled in a separation tank etc. It could not be done, which was inconvenient.

[0004] An object of the present invention is to enable maintenance of the entire sludge discharging device to be performed with good workability.

[0005]

According to a first aspect of the present invention, there is provided a paint mist separating apparatus which is provided with a base which is detachable from the separation tank, and on which the entire sludge discharging apparatus is mounted. The point is that they are supported and integrated.

[0006] The characteristic configuration of the paint mist separation device according to the second invention of the present invention is that, in the first invention, a passage is formed for scraping up the paint sludge in the separation tank to a discharge point to a sludge collection part. A gutter-shaped guide is provided such that the receiving portion on one end side in the longitudinal direction is immersed in the cleaning liquid, and the discharge portion on the other end is provided in an inclined position positioned at the discharge location, and the paint sludge flowing into the passage is discharged. A scraper for scraping up to a scraper, and a scraper having a movable body that moves so as to scrape the scraper,
The sludge discharging device is configured by providing an actuator that lifts up a movable body of the scraper, and a scraping action portion of the scraper of the scraper is configured to have a width substantially equal to the width of the passage. The width of the base end portion for attachment to the body is configured to be smaller than the width of the scraping action portion.

[0007] The characteristic configuration of the paint mist separation device according to the third invention of the present invention is that, in the first invention, a passage is formed for scraping up the paint sludge in the separation tank to a discharge point to a sludge collecting section. A gutter-shaped guide is provided such that the receiving portion on one end side in the longitudinal direction is immersed in the cleaning liquid, and the discharge portion on the other end is provided in an inclined position positioned at the discharge location, and the paint sludge flowing into the passage is discharged. A scraper for scraping up to a scraper, and a scraper having a movable body that moves so as to scrape the scraper,
The sludge discharging device is constituted by providing an actuator for moving the movable body of the scraper up, and the bottom plate forming the bottom of the passage of the guide is configured to be able to be drawn out inclining upward.

The characteristic feature of the paint mist separation device according to the fourth invention of the present invention is that, in the first invention, a passage is formed for scraping up the paint sludge in the separation tank to a discharge point to a sludge collecting section. A gutter-shaped guide is provided such that the receiving portion on one end side in the longitudinal direction is immersed in the cleaning liquid, and the discharge portion on the other end is provided in an inclined position positioned at the discharge location, and the paint sludge flowing into the passage is discharged. A scraper for scraping up to a scraper, and a scraper having a movable body that moves so as to scrape the scraper,
The sludge discharging device is configured by providing an actuator that lifts up a movable body of the scraper, and a scraping unit that performs a scraping action on a scraping surface of a scraper at the discharge location is provided. .

[0009]

According to the first aspect of the present invention, since the entire sludge discharge device is supported by a base detachable from the separation tank and integrated, that is, unitized as one sludge discharge device, sludge treatment is performed. When performing maintenance on the equipment, remove the base from the separation tank,
The sludge discharge device can be removed as a single unit without disassembling each device.

According to the second invention, the width of the scraping action portion of the scraper is substantially equal to the width of the passage, so that the scraper can scrape paint sludge to the discharge portion efficiently and reliably. It can be carried out. Moreover, since the width of the take-out portion connecting the scraping action portion to the movable body is configured to be smaller than the width of the scraping action portion,
Even when the scraper is configured to have a large amount of protrusion from the movable body and adopt a configuration in which the movable body is not immersed in the cleaning liquid in the separation tank, the scraper can be configured to be lightweight, simplifying the support configuration of the scraper and Not only can the actuator be miniaturized, but also the space for moving the take-out part to be secured in the space above the passage can be narrow, and as a result, without interfering with the operation of the scraper, Of these, components of the sludge discharging device such as components for movably supporting the movable body can be arranged in a space adjacent to the moving space in the width direction, and the entire device can be integrated.

The sludge discharging device includes a gutter-like guide for forming a passage for scraping paint sludge in the separation tank to a discharge point to a sludge collecting portion. And a scraper for scraping paint sludge flowing into the passage to the discharge portion, and supporting an upper end of the scraper. In the case of a device provided with a scraper having a movable body that moves so as to scrape the scraper and an actuator that scrapes the movable body of the scraper, the guide is separated from the tank. Over the full width of
When the supply of the cleaning liquid containing the paint mist to the separation tank is performed on the front side of the guide, most of the paint sludge floats on the front surface of the guide, so that the paint sludge can be efficiently discharged from the separation tank. . However, on the other hand, the liquid upper layer of the separation tank where the paint sludge floats is separated by the guide, and the liquid level behind the guide is hidden by the guide, and a small amount of the paint sludge settles on the back of the guide. Paint sludge that remains cannot be cleaned and remains as it is. The third device was devised in view of the above points. According to the third device, the guide plate is pulled out to cancel the hiding of the liquid level at the back of the guide by the guide. Since the liquid level at the back of the guide can be opened upward, a configuration is adopted in which the guide is configured to span the entire width of the separation tank as described above to efficiently discharge a large amount of paint sludge floating on the front of the guide. Even in this case, the work of removing the paint sludge on the back of the guide can be performed without removing the entire sludge discharging device.

According to the fourth aspect of the present invention, the paint sludge adhering to the scraper that has finished the scraping action can be scraped off and discharged to the sludge collecting section, so that the paint sludge once scraped out of the separation tank can be removed. Is easily returned into the separation tank, and paint sludge can be efficiently discharged from the separation tank.

[0013]

According to the present invention, therefore, the entire sludge discharge device can be removed from the separation tank while maintaining the sludge discharge function, so that maintenance of the sludge discharge device can be performed with good workability. .

According to the second aspect of the present invention, the scraper can be operated with a light weight, a small size, and a reliable operation of the scraper.
The actuator can be made compact, and an inexpensive actuator with low output can be used.

According to the third aspect of the present invention, even if the guide is formed so as to cover the entire width of the separation tank and a large amount of paint sludge floating on the front surface of the guide is efficiently discharged, the work can be performed. The paint sludge remaining on the back of the guide can be removed efficiently.

According to the present invention, since the paint sludge once discharged is not brought into the separation tank, the paint sludge can be efficiently discharged.

[0017]

EXAMPLE An example of application to an apparatus for removing paint mist from the exhaust of a simple coating booth will be described. Figure 1 shows a simple painting booth.
As shown in FIG. 2, a cleaning liquid tank 2 is provided below a spray coating area 1 for spray coating an object to be coated, and a suction fan of an exhaust fan 4 is provided at the upper end on the back side of the partition wall 3 with respect to the spray coating area 1. A cleaning chamber 6 communicating with the port 5 is formed.

The lower edge of the partition wall 3 is formed in a sawtooth shape, and is arranged so as to form a gap 7 between the partition wall 3 and the liquid surface of the cleaning liquid tank 2. Accordingly, in the simple coating booth, the exhaust air containing the paint mist is sucked into the cleaning chamber 6 at a high speed from the spray coating area 1 through the gap 7 by the suction action of the exhaust fan 4 and the clearance 7 in the cleaning liquid tank 2 Is sucked into the cleaning chamber 6 as a trapping liquid for the paint mist during exhaust, and the suction fan 6 suctions the cleaning chamber 6 while guiding the suctioned cleaning liquid to the curved plate 8.
It is configured to be sprayed and rise in a state of merging with the suction / exhaust air, whereby the paint mist contained in the suction / exhaust air is captured by the cleaning liquid in the cleaning chamber 6 to purify the exhaust air.

The cleaning chamber 6 is provided with a draining plate 9 for draining the exhaust gas from which the paint mist has been captured and removed by the cleaning liquid, and the cleaning liquid which has captured the paint mist is dropped during the rising process by the suction action of the exhaust fan 4. An inclined plate 11 that receives and flows down to the drain groove 10 is provided. Reference numeral 12 denotes an exhaust duct for exhausting the exhaust after draining the liquid.

The apparatus for separating and removing the paint mist from the washing liquid is provided by receiving the washing liquid supplied from the drainage groove 10 through the communication passage 13 in the form of a weir to the side of the simple painting booth. And a separating tank 15 for returning the cleaning liquid to the cleaning liquid tank 2 through a communication passage 14 of a mound weir type, and the paint sludge floated and separated in the separation tank 15 is discharged to a sludge collecting section 16. A sludge discharging device 17 is provided.

As shown in FIG. 4, the sludge collecting section 16 is provided with a container 19 having an opening 18 for receiving sludge which is opened upward, and the inside of the container 19 is provided in the lower liquid storage chamber 2.
0 and a sludge chamber 21 at the upper part, and a partition plate 22 having a liquid passage hole through which the liquid in the sludge chamber 21 flows down to the liquid storage chamber 20 is provided. Drain collection bag 23 discharged from hole
Is detachably attached. The partition plate 22 is made of a wire mesh.

The sludge discharging device 17 is shown in FIGS.
As shown in FIG. 5, a gutter-shaped guide 24, a scraper 25, an actuator 26 for driving the scraper 25, and scraping means are provided.

The guide 24 forms a groove-like passage 27 for scraping up the paint sludge in the separation tank 15 to a discharge point to the sludge collecting section 16, and is formed at one end in the longitudinal direction. The receiving part is immersed in the cleaning liquid, and the discharge part at the other end is installed in an inclined position positioned at the discharge part. A pair of side plates 29 connected via a plurality of connecting members 28 using angles disposed at intervals in the longitudinal direction of the passage, and a bottom plate 30 forming the bottom of the passage 27
The bottom plate 30 is mounted on and supported by the connecting member 28 so as to be able to be pulled out upward at an angle. The slanted upper end portion 30a of the bottom plate 30 is bent, and paint sludge scraped up along the upper surface of the bottom plate 30 is collected by the sludge collection unit 16.
A guide plate for guiding the flow downward, a pull handle for pull-out operation, and a reinforcing rib for suppressing the bending of the inclined upper end side, and the inclined lower end portion 30b is also bent to suppress the bending of the inclined lower end side. It constitutes a rib. Further, the side plate 29 has a falling-off preventing piece portion 29 for preventing the paint sludge from falling off in the width direction from above the inclined upper end portion 30a.
a are connected integrally. Of course, the width of the guide 24 is made as large as possible within a range that can be inserted into the separation tank 15.

The scraper 25 is provided with two scrapers 31 for scraping the paint sludge flowing into the passage 27 to the discharge section at the upper end of the slant, and supporting the upper ends of the two scrapers 31 respectively. And a movable body 32 which moves to scrape up the two scrapers 31. The scraping operation of the scraper 31 is as follows.
This operation is an operation in which the scraping movement from the scraping start position to the scraping end position and the return movement from the scraping end position to the scraping start position along the passage 27 are repeated.

The scraper 31 includes a lower scraping portion 31a and an upper take-out portion 31b fixedly connected to and supported by the movable body 32 via a bracket 33. The scraping portion 31a is The width of the passage 27 is substantially equal to the width of the passage 27 so that the gap between the guide 24 and the side plate 29 is made as small as possible to prevent the paint sludge from leaking out of the gap during the scraping. Are connected to the center in the width direction of the scraping action portion 31a, and have a width smaller than the width of the scraping action portion 31a.

The movable body 32 has an inlet side and an outlet spaced apart in the longitudinal direction of the passage above the passage 27 so as to circulate over the lower passage along the passage 27 and the upper passage located thereabove. A conveyer chain wound around sprocket wheels 34a, 34b rotatably arranged around the axes Xa, Xb in a horizontal posture along the width direction of the passage, respectively, at a position on the side. By circulating and moving so that the moving direction in the side path is the direction from the entrance side to the exit side, it was supported between the scraping path along the passage 27 and the return path parallel to the scraping path. The scraper 31 is circulated. Therefore, the scraper 31
Is changed to the inverted posture in which the top and bottom are reversed with the movement from the end of the scraping path to the beginning of the return path, the return path is moved in the inverted posture, and the end of the return path is moved to the beginning of the scraping path. The original upright posture is changed with the movement. In addition, the conveyor chain 32 includes the scraper 31.
In order to stabilize the posture of the scraper 31 by supporting two points spaced apart in the width direction of the take-out portion 31b at
There are two articles. Of course, two sprocket wheels 34a and 34b are also provided. Shafts 35a, 35b of the sprocket wheels 34a, 34b
Are supported at both ends via bearings 36a and 36b. The bearing 36b for the sprocket wheel 34b on the passage outlet side is fixedly installed, and the bearing 36a for the sprocket wheel 34a on the passage inlet side moves in the longitudinal direction of the passage. It is installed freely. Reference numeral 37 denotes a pair of take-ups for adjusting the tension of the conveyor chain 32 to an appropriate value by adjusting the longitudinal position of the bearing 36a with respect to the sprocket wheel 34a on the passage entrance side. And a scraper 2
In 5, the movable body is arranged such that when one of the scrapers 31 is moving on the scraping path, the other moves on the return path, and when the other is moving on the scraping path, one moves on the return path. The length 32 and the mounting interval between the two scrapers 31 are set.

The actuator 26 is an air motor for rotating one of the sprocket wheels 34a, 34b on the passage outlet side through a roller chain 38. The air supply to the air motor 26 is provided in a coating facility. Air supply passage 4 to the high pressure air supply outlet 39
0, a stop valve 41 for starting and stopping the air supply, an air filter 4
2. A pressure control valve 43, a pressure gauge 44, and a lubricator 45 are provided. A speed controller 47 and a silencer 48 for adjusting the exhaust speed of exhaust air are provided in an exhaust path 46 from the air motor 26. Is equipped.

The scraping means scrapes the scraping surface of the scraper 31 at the discharge point. More specifically, when the scraper 31 moves from the end of the scraping path to the beginning of the return path, the scraping means moves along with the movement. Means for scraping off paint sludge adhering to the scraping surface. The scraping surface of a scraper 31 located at the end of a scraping path, which is swingable around an axis Xc in a horizontal posture along a width direction of a passage. As the scraper 31 moves to the start end side of the return path from the scraping start posture contacting the upper end of the scraper at its lower edge, the scraper 31 is pushed by the scraper 31 and rubs the scraping surface to the lower end while swinging backward and scraping. After detaching from the lower end of the surface, the back surface is pushed by the scraper 31 to retreat and swing out of the movement path of the scraper 31 to move the scraper 31 to the return path start end. A spring 50 for applying a swinging power to the side in contact with the scraping surface of the scraping plate 49, and a scraping plate 49 against the applying force of the spring 50. A stopper 51 for preventing forward swinging beyond the scraping start position is provided.

The scraping plate 49 has a rigidity that does not bend while being pressed by the scraper 31 by the force exerted by the spring 50. The lower end 49a is bent to reinforce the lower edge so as not to bend. The lower edge which is constituted by a rib and contacts the scraping surface of the scraper 31 is:
It is composed of the bent part.

The whole of the sludge discharge device 17 composed of the above components is supported by a base 52 which is detachable from the separation tank 15 and is integrated therewith. More specifically, as shown in FIG. 9, the base 52 is configured by three-dimensionally assembling a plurality of frame members 53, and is mounted and supported on an upper annular flange 15 f of the separation tank 15 at a lower portion. It has a mounting portion 54 fixed via bolts in the state. The side plate 29 of the guide 24 is fixed to the base 52 by welding or the like to the inclined upper end portion and the first stay 55a fixed in the middle of the longitudinal direction.
2 supported. The bearing 36b of the sprocket wheel 34b on the passage exit side of the scraper 25 is attached to a base 52.
The bearing 36a of the sprocket wheel 34a on the passage entrance side is supported by the base 52 by being fixed to the pedestal 56 fixed to the base 56 via the first stay 55a and the second stay 55b located on the entrance side. It is mounted on a conveyor frame 56 fixed to the side plate 29 so as to be freely changeable in position and supported by the base 52.
Are mounted on a frame plate 57 erected between the first stays 55a and supported by the base 52. The air motor 26 serving as the actuator is mounted and fixed on an upper portion of a base 52, and a scraping plate 49 and a stopper 51 of a scraping means are rotated by a take-out frame 59 fixed to the base 52 with a shaft 58 thereof. By being freely attached, it is supported by the base 52, and the spring 50
8 is suspended between an arm 60 fixed to the base 8 and the base 52.

In the above embodiment, the take-out portion 31b of the scraper 31 protrudes from the center in the width direction of the scraping action portion 31a and has a small width and is not located at the place where the pair of take-ups 37 are installed. Although the upper path of the conveyor chain 32 is on the slack side and the scraper 31 hangs down a little while moving on the return path, the scraper 31 does not come into contact with the take-up 37 or contact it.

[Alternative Embodiment] In the above embodiment, the paint mist in the exhaust air from the simple painting booth was removed. However, the present invention removes the paint mist in the exhaust air from various painting booths. Can be applied in case. In the above-described embodiment, the guide 24 is shown to be pulled out of the bottom plate 30, but the bottom plate 30 may be fixed. In the above embodiment, the movable body 3
Although the conveyor chain is shown as 2, the movable body 32 is a scraper 31 such as one using a link mechanism.
Any structure can be used as long as it is used to lift up the device. In the above-described embodiment, a scraping type is shown as the sludge discharging device 17, but the sludge discharging device 17 may be a type in which paint sludge is scooped. In the above embodiment, the base 52 is formed separately from the plurality of frame members 53. However, for example, the guide 24 and the scraper 25 may also be used as the base 52, and the sludge discharge device 17 may be integrated.

Incidentally, in the claims of the utility model registration, reference numerals are written for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a schematic vertical front view of a simple painting booth.

FIG. 2 is a schematic longitudinal sectional side view of a simple painting booth.

FIG. 3 is a cutaway plan view of a simple painting booth.

FIG. 4 is a front view of a sludge discharge section.

FIG. 5 is a cutaway front view of the sludge discharging device.

FIG. 6 is a sectional view taken along line AA in FIG.

FIG. 7 is a sectional view taken along line BB in FIG. 5;

8 is a sectional view taken along line CC in FIG.

FIG. 9 is a perspective view showing a frame structure.

[Explanation of symbols]

 Reference Signs List 15 Separation tank 16 Sludge collection unit 17 Sludge discharge device 52 Base 27 Passage 24 Guide 31 Scraper 32 Movable body 25 Scavenger 26 Actuator 31a Scrapping action unit 31b Take-out unit 30 Bottom plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C02F 1/24 B05B 15/04 104 C02F 1/40

Claims (4)

(57) [Scope of request for utility model registration] A separation tank (15) is provided for receiving a cleaning liquid that has captured the paint mist to sludge the paint mist in the cleaning liquid and float and separate the sludge.
5) The floating paint sludge in the sludge collection section (1)
6) A paint mist separation device provided with a sludge discharge device (17) for discharging the paint mist, wherein a base (52) that is detachable from the separation tank (15) is provided, and the base (52) is provided.
And a paint mist separating device integrally supporting the sludge discharging device (17). 2. A gutter-like guide (24) for forming a passage (27) for scraping paint sludge in the separation tank (15) to a discharge point to a sludge collection part (16).
Is provided in such a manner that the receiving portion on one end side in the longitudinal direction is immersed in the cleaning liquid, and the discharge portion on the other end is disposed in an inclined position positioned at the discharge point, and paint sludge flowing into the passage (27) is discharged to the discharge portion. A scraper (31) for scraping up the scraper and a scraper (3) supporting the upper end of the scraper (31).
The movable body (3) that moves so as to lift the
2), and an actuator (26) for moving up a movable body (32) of the scraper (25) is provided, and the sludge discharging device (1) is provided.
7), wherein the lower scraping action portion (31a) of the scraper (31) of the scraper (25) is configured to have a width substantially equal to the width of the passage (27). The paint mist separation device according to claim 1, wherein a width of an upper take-out portion (31b) connecting the (31a) to the movable body (32) is smaller than a width of the scraping action portion (31a). . 3. A gutter-like guide (24) for forming a passage (27) for agitating paint sludge in the separation tank (15) to a discharge point to a sludge collecting part (16).
Is provided in such a manner that the receiving portion on one end side in the longitudinal direction is immersed in the cleaning liquid, and the discharge portion on the other end is disposed in an inclined position positioned at the discharge point, and paint sludge flowing into the passage (27) is discharged to the discharge portion. A scraper (25) provided with a scraper (31) for scraping the scraper (31) and a movable body (32) that moves to scrape the scraper (31); The sludge discharge device (17) is provided by providing an actuator (26) for lifting the movable body (32) of the movable member (32), and a bottom plate (30) of the guide (24) forming a bottom of a passage (27) is formed. 2. The paint mist separation device according to claim 1, wherein the paint mist separation device is configured to be able to be pulled out upwardly. 4. A gutter-like guide (24) for forming a passage (27) for scraping up paint sludge in the separation tank (15) to a discharge point to a sludge collection part (16).
Is provided in such a manner that the receiving portion on one end side in the longitudinal direction is immersed in the cleaning liquid, and the discharge portion on the other end is disposed in an inclined position positioned at the discharge point, and paint sludge flowing into the passage (27) is discharged to the discharge portion. A scraper (25) provided with a scraper (31) for scraping the scraper (31) and a movable body (32) that moves to scrape the scraper (31); The sludge discharging device (17) is provided with an actuator (26) for moving up the movable body (32) of the scraper, and the scraping action is performed at the discharging point on the scraping surface of the scraper (31). The paint mist separation device according to claim 1, further comprising means.