JPH11276955A - Agitation of recovery vessel in coating material recycling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent sedimentation of any recovered coating material in a recovery vessel and to dissolve captured coating materials from the mist capture members by dividing the recovery vessel into two divided vessels by a partition plate for separating two mist capture members, forming a hole for communicating coating materials in the divided vessels with each other on each of the right and left end sides of the partition plate and transferring the coating material in one divided vessel to the other divided vessel with impellers. SOLUTION: In a coating material recycling system, a driving device 2 for vertically driving two mist capture members 3 and 4 is placed above a suction hood 1 and the two mist capture members 3 and 4 are received in a recovery vessel 5 and entirely immersed in a coating material inside the vessel 5. Also, a partition plate 6 for separating the mist capture members 3 and 4 is placed inside the recovery vessel 5 so as to divide the recovery vessel 5 into two divided vessels, namely, a vessel A and a vessel B, and has a structure such that guide cylinders 10a and 10c can be disposed at the left and right end sides of the partition plate 6, respectively, and consists of partition plate parts 6a, 6b, 6c or the like. In the partition plate 6, a communication hole 10b for communicating the vessels A and B with each other is perforated in the partition plate part 6c on the left end side of the partition plate 6 in the figure, and further, an impeller 9 is placed along the inner periphery of the guide cylinder 10a fitted to the communication hole 10b. Thus, by rotating such impellers 9, the coating material in the recovery vessel 5 is circulated from the vessel A through the guide cylinder 10a, the vessel B and the guide cylinder 10c fitted to another similar communication hole on the right end side of the partition plate 6 and returned to the vessel A, to dissolve the captured mist by the mist capture members 3 and 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating system that effectively captures and collects and reuses a paint mist that is oversprayed in a spray coating operation by a mist catching member that can be contracted into a collecting tank. The present invention relates to a method for agitating a collection tank for collecting paints captured by a capture member.

[0002]

2. Description of the Related Art The applicant has previously filed Patent Application No. Hei 8-3
No. 46573 "water-based paint recycling system" was invented. Although the details are omitted, the present invention is directed to a paint tank in which a number of pre-baffle plates are attached to an annular connecting device disposed on a booth opening surface, and at least a part of the annularly moving pre-baffle plate is installed at a lower portion of the annular connecting device. A capture / recovery mechanism that allows the pre-baffle plate to be immersed in the paint sequentially to collect the paint captured by the pre-baffle plate and to keep the pre-baffle plate wet by constantly rotating It was invented as the subject matter. However, in this mechanism, the paint adhered to the pre-baffle plate dries and adheres when the work is stopped at night or on a holiday. In order to prevent this drying and sticking, always rotate the pre-baffle plate
Alternatively, it was necessary to perform a cleaning treatment of the pre-baffle plate before stopping the operation. Further, it is difficult to remove and store the annular connecting device or the pre-baffle plate for the annular driving, and it is almost difficult to change the color of the paint.

[0003] For this reason, the applicant has invented and applied for an improved patent of the aforementioned patent. Although not described in detail, this system uses a mist capturing member such as a baffle plate that can be extended and retracted into a recovery tank on the opening surface of the suction hood, and efficiently captures and collects the spray mist of the paint as a reusable paint. In this system, the expandable and contractible mist capturing member is contracted and immersed in the collection tank at an appropriate time, and the paint spray mist is collected in the collection tank. In addition, when the work is stopped during the night or on holidays, all the mist capturing members are stored in the collection tank, thereby solving the problem of the patent. However, it is necessary to prevent sedimentation of the paint in the collection tank and to dissolve the trapped paint in the mist trapping member immersed in the collection tank both during operation and during work stoppages such as nights and holidays. Therefore, by stirring in the collection tank,
The sedimentation prevention of the paint in the collection tank and the dissolution of the paint trapped by the mist trapping member immersed in the collection tank are performed. The frontage is a 2M coating booth example.
A large flow rate per liter is required. As this stirring means, there is a method of connecting an electric pump, an air-operated diaphragm pump, a plunger pump, or the like to the outside of the recovery tank by a pipe, but a large-diameter pump is required to secure a flow rate of about 200 liters per minute. However, there is a problem that a large pipe diameter is required, and a large amount is required for installation and maintenance of operation power. In addition, in the case of the piping system, there is a problem in securing the mobility of the collection tank at the time of inspection, cleaning, and color change by maintenance or the like.

[0004]

SUMMARY OF THE INVENTION The present invention uses a mist catching member such as a baffle plate which can be extended and retracted into a recovery tank on the opening surface of a suction hood to efficiently catch a spray mist of paint as a reusable paint.・ In the recovery tank agitation method of the recovery tank of the paint recycling system, which prevents the paint from settling in the recovery tank and promotes the dissolution of the trapped paint of the mist capturing member immersed in the recovery tank, The method and structure of the present invention are intended to provide simple means in terms of ease of installation, maintenance, mobility of the recovery tank at the time of color change, and the like.

[0005]

According to the first aspect of the present invention, an extendable mist catching member for catching and collecting paint mist oversprayed on an opening surface of a suction hood of a paint booth or the like is shrunk so as to be timely. The immersion recovery tank is partitioned by a partition plate, and a tunnel-shaped guide tube is provided at one end on the left and right sides of the partition plate so that the paint before and after the partition can be conducted. The impeller rotates in the guide cylinder by the drive shaft connected to the set rotary drive source, so that the paint is transferred from one tank to the other tank,
The partition plate is opened at the left and right other ends of the partition plate so that the paint before and after the partition can be conducted, so that the paint in the collection tank circulates through the tank before and after the partition plate. Also, by the number of mist trapping members, the number of partition plates and partitioned tanks can be increased, and by combining the arrangement of the tunnel-shaped guide cylinder and the opening of the partition plate to the partition plate, The entire partitioned tank can also be circulated and stirred. Alternatively, a hole may be simply formed in the partition plate without attaching the tunnel-shaped guide cylinder to the partition plate, and the impeller may be rotated at the hole.

According to a second aspect of the present invention, a retractable mist capturing member for capturing and recovering paint mist oversprayed on an opening surface of a suction hood of a coating booth or the like is contracted so as to be immersed in a timely manner. Partition the tank with a partition plate,
The impeller is rotated by a tunnel-shaped guide cylinder that conducts the partition plate so that the paint circulates between the tanks, and the paint is transferred, and the paint is transferred and the inside of the collection tank is circulated and agitated. The rotary drive source is arranged above the liquid level at the left and right ends of the collection tank, and the impeller is rotated in the guide cylinder by the drive shaft to transfer the paint.The partition plate is separated by one impeller and the guide cylinder. The paint in one tank partitioned by the above is sent to the other tank, the paint in the other tank separated by the partition plate by the other impeller and the guide cylinder is sent to the one tank, and the paint in the recovery tank is separated by the partition plate. It circulates through the tanks before and after the partition. In addition, the number of partition plates and the number of tanks that are partitioned can be increased by the number of mist capturing members, and by combining the arrangement of tunnel-shaped guide cylinders with the partition plates, the entire partitioned tank can also be increased. Circulation stirring can also be performed. Alternatively, a hole may be simply formed in the partition plate without attaching the tunnel-shaped guide cylinder to the partition plate, and the impeller may be rotated at the hole.

According to a third aspect of the present invention, there is provided a recovery tank in which a stretchable mist capturing member for capturing and recovering the oversprayed paint mist on an opening surface of a suction hood such as a paint booth is contracted and immersed in a timely manner. Then, rotate the impeller in the elbow guide tube to transfer the paint,
By circulating the inside of the collection tank by transferring the paint,
The rotary drive source is located above the liquid level in the recovery tank, and the impeller is rotated in the elbow-shaped guide cylinder by the drive shaft to transfer the paint. The arrangement of the stirring device can be freely determined by the number of the capturing members.

[0008]

Embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an overall configuration diagram of a paint recycling system, showing a state in which a mist capturing member using a blind-shaped baffle plate is doubled and contracted so as to be completely immersed in the paint in a recovery tank. FIG. 2 is a diagram of a detailed installation example of the recovery tank portion and the stirring device, and the illustration of the mist capturing member that has been completely stored is omitted. FIG. 3 is a view of the collection tank portion, showing a combination example in which a stirrer is installed and a partition plate is opened. FIG. 4 is a detailed sectional view of the stirring device. Fig.-5, Fig.-6, Fig.-
7 shows another embodiment of the stirring device using an elbow-shaped guide cylinder. FIG. 8a and FIG. 8b show an example of agitation in the case where there is no partition plate, in which an agitation device is arranged so as to be staggered at both left and right ends of the recovery tank. Figures 9a and 9b are
This is another example of agitation in the case where there is no partition plate, and is an example in which an agitation device is arranged only at a central portion on one side of a recovery tank.

In FIG. 1, a driving device 2 for driving the mist catching members 3 and 4 up and down is disposed above the suction hood 1, and the two mist catching members are contracted so that the mist catching members 3 and 4 are shrunk into the paint in the collection tank. This shows a state in which it is completely stored. A partition plate 6 is provided inside the recovery tank 5 so as to partition the two mist capturing members 3 and 4. The left and right recovery tank portions of the mist capturing members 3 and 4 are protruding for installing a stirrer, and rotational drive sources 7a and 7b for stirring are arranged by stays (not shown) or the like. Figure 2 shows a detailed installation example of the recovery tank and the stirrer.
The illustration of the mist capturing member that has been completely stored is omitted. In order to arrange the guide tubes 10a and 10c, the partition plate 6
a, 6b, 6c, 6d, 6e, and the recovery tank 5 is divided into an A tank and a B tank. As shown in FIG.
In c, a communication hole 10b that connects the tank A and the tank B is formed,
A guide cylinder 10a is connected to the communication hole 10b. An impeller 9 is provided on the inner periphery of the guide cylinder 10a, and is rotated by a drive shaft 8 connected to a rotary drive source 7a held above the liquid level by a stay (not shown). Although the rotary drive source 7a is not particularly limited, an explosion-proof electric motor or an air motor is preferably used because it is used in a paint atmosphere. The rotation of the impeller 9 generates a liquid flow from the upper part to the lower part of the guide cylinder 10a. That is, the liquid flow is generated from the tank B to the tank A, but the liquid flow can be generated from the tank A to the tank B depending on the rotation direction of the impeller 9. Similarly, the impeller 9b disposed on the inner periphery of the guide cylinder 10c attached to the partition plate 6e at the other end of the recovery tank 5 is rotated to generate a liquid flow from the tank A to the tank B. As a result, the paint in the collection tank circulates from the tank A to the tank B via the guide cylinder 10c, and circulates from the tank B to the tank A via the guide cylinder 10a. By this circulation, it is possible to prevent the paint from settling in the recovery tank and dissolve the mist captured by the mist capturing member completely stored in the paint in the recovery tank 5.

FIG. 5, FIG. 6 and FIG. 7 show another embodiment of the stirring device, in which a communication hole 14 is formed in the partition plate 11 or the partition plate 13. FIG.
Is opened, and the elbow-shaped guide cylinder 12 is attached to the connection hole 14. An impeller 9 is disposed inside the elbow-shaped guide cylinder 12, and is rotated by a rotation drive source 7a to generate a liquid flow. By setting the direction of rotation of the impeller 9 as the direction of the liquid flow, the direction from the tank A to the tank B or from the tank B to the tank A is possible.

FIG. 8a and FIG. 8b show an embodiment of a stirring device in the case where there is no partition plate in the recovery tank. The elbow-shaped guide cylinder 12a is mounted on the support plate 15a, and the impeller 9a is rotated by the rotary drive source 7a. , And a liquid flow 16a. Also, the support plate 1 is provided at the opposite end of the collection tank 5 so that the support plate 1 is staggered.
A liquid flow 16b is generated by arranging the impeller 9b with the 5b, the elbow-shaped guide cylinder 12b and the rotary drive source 7b. As a result, a simple combination of an elbow-shaped guide cylinder and an impeller and a rotary drive source located above the liquid level in the recovery tank enable circulation and agitation in the recovery tank to prevent paint sedimentation in the recovery tank and to prevent The mist captured by the mist capturing member completely stored in the paint can be dissolved.

FIG. 9a and FIG. 9b show another embodiment of the stirring device in the case where there is no partition plate in the collecting tank. A supporting plate 17 is arranged only at the center of one end of the collecting tank 5, and an elbow is provided. The impellers 9a and 9b are rotated by the rotary drive sources 7a and 7b, and the liquid flows 18a and 18b are attached.
Is occurring. As a result, a simple combination of an elbow-shaped guide cylinder and an impeller and a rotary drive source located above the liquid level in the recovery tank enable circulation and agitation in the recovery tank to prevent paint sedimentation in the recovery tank and to prevent The mist captured by the mist capturing member completely stored in the paint can be dissolved. The number of support plates, elbow-shaped guide cylinders, rotary drive sources, and impellers in FIGS. 8A and 8B and FIGS. 9A and 9B are not limited to the present embodiment, and the size of the recovery tank and mist capture are not limited. It can be set by the number of members.

[0014]

Since the present invention is constructed as described above, it has the following effects.

By a simple combination of the guide cylinder and the impeller and a rotary drive source disposed above the liquid level in the recovery tank, circulation and agitation in the recovery tank can be performed. The mist captured by the mist capturing member completely stored in the mist can be dissolved. For this reason, circulating agitation is of course performed during operation, but even when the work is suspended during nights and holidays, circulating agitation is performed by immersing a plurality of mist capturing members together in the recovery tank and circulating the mist capturing members. Dry adhesion to the mist trapping member at the time of stoppage is eliminated, operation can be stopped without special maintenance, and work can be easily resumed.

A large-diameter pump is required as in the case where an electric pump or a pneumatic diaphragm pump / plunger pump is connected to the outside of the recovery tank by piping, and a large-diameter piping is required. There is no problem that a large amount is required for installation and maintenance of driving power, and it is difficult to secure the mobility of the collection tank during cleaning or color change by maintenance, etc., and the mist trapping member is stored. The color of the paint can be easily changed by making the collection tank movable.

The number and arrangement of the agitation can be designed relatively freely according to the size of the recovery tank and the number of the mist catching members. Therefore, when the electric pump or the pneumatic diaphragm pump / plunger pump is connected by piping. In comparison, a design with a higher degree of freedom is possible.

[0018]

[Brief description of the drawings]

FIG. 1 shows an overall configuration diagram of a paint recycling system,
FIG. 5 is a bird's-eye view schematically showing a state in which the mist capturing member using the blind-shaped baffle plate is doubled and contracted to be completely immersed in the paint in the collection tank.

FIG. 2 is a view showing a detailed installation example of a recovery tank portion and a stirring device, and does not show a mist capturing member that is completely stored.

FIG. 3 is an example of a combination of the installation of a stirrer and the opening of a partition plate in the view of a recovery tank portion.

FIG. 4 is a detailed sectional view of a part of the stirring device.

FIG. 5

FIG. 6

FIG. 7 is another embodiment of a stirring device using an elbow-shaped guide cylinder.

[Fig.-8a]

FIG. 8B is an example of agitation in the case where there is no partition plate, in which an agitator is arranged at both left and right ends of the recovery tank so as to be alternately arranged.

[Fig.-9a]

FIG. 9b is another example of agitation in the case where there is no partition plate, in which an agitation device is arranged only in the central portion on one side of the recovery tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction hood 2 Drive device 3, 4 Blind baffle 5 Collection tank 6 Partition plate 7a, 7b Rotation drive source 9 Impeller 10a, 10c Guide cylinder 11 Opening 12 Elbow-shaped guide cylinder

Claims (3)

[Claims] 1. A mist catching member for catching and collecting oversprayed paint mist on an opening surface of a suction hood of a coating booth or the like is vertically expandably and contractably arranged, and the stretchable mist catching member is contracted. In the spray mist collection device of the paint recycling system, which was immersed in the collection tank in a timely manner, a partition plate was provided so as to partition the collection tank, and the paint in the partitioned tank was made conductive at one of the left and right ends of the partition plate. A hole is drilled or a tunnel-shaped guide cylinder is arranged, and the impeller rotates in the hole or the guide cylinder by a drive shaft connected to a rotary drive source arranged above the liquid level, and paint is removed. Transfer from one tank to the other tank, open the partition plate at the left and right other ends of the partition plate to allow conduction of the paint before and after the partition, and before and after the paint in the recovery tank is partitioned by the partition plate Tank Method of stirring the recovery tank of the paint recycling system that circulates water. 2. A mist catching member for catching and collecting oversprayed paint mist on an opening surface of a suction hood of a painting booth or the like is vertically extendably extendable, and the stretchable mist catching member is contracted. In the spray mist collection device of the paint recycling system, which is immersed in the collection tank in a timely manner, a partition plate is provided so as to partition the collection tank, and the mist capturing member can be stored in each partitioned tank,
At the left and right ends of the partition plate, holes were made to allow the paint of the adjacent tanks that were separated to be able to conduct, or tunnel-like guide cylinders were arranged, and the left and right ends of the collection tank were placed above the liquid level above the collection tank. A drive shaft connected to a rotary drive source causes the impeller to rotate in each hole or guide cylinder to transfer paint, and one impeller rotates in the hole or guide cylinder to partition with a partition plate. The paint in one of the tanks is sent to the other tank, and the other impeller rotates in the hole or the guide cylinder to send the paint in the other tank partitioned by the partition plate to the one tank, and is used for the collection tank. A method for agitating a collection tank of a paint recycling system in which paint is circulated through tanks before and after being partitioned by a partition plate. 3. A mist catching member for catching and collecting oversprayed paint mist on an opening surface of a suction hood of a coating booth or the like is vertically extendably extendable, and the stretchable mist catching member is contracted. In a spray mist collection device of a paint recycling system that is immersed in a collection tank in a timely manner, an elbow-shaped guide cylinder is provided, and a drive shaft connected to a rotary drive source provided above the liquid level of the collection tank. A method for agitating a collection tank of a paint recycling system in which an impeller rotates in each of the elbow-shaped guide cylinders to transfer the paint, and the paint in the collection tank is circulated and stirred.