JPH05200338A - Spray waste liquid recovery device - Google Patents

Abstract

PURPOSE:To prevent a pump from being clogged by preventing the precipitation of slurry in a drainpipe and reusing clean water in reuse of waste liquid. CONSTITUTION:Waste liquid in a recovery tank 5 of a spray device 1 is fed to a settling tank 10 through a waste liquid feed pipe 6. The waste liquid fed to the settling tank 10 is separated from slurry by precipitation and the supernatent liquid is drained or reused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray waste liquid recovery device in a spray device which uses a spray liquid containing a slurry having a sedimentation property.

[0002]

2. Description of the Related Art For example, in a color cathode ray tube,
In order to prevent the doming phenomenon at the time of operation start, a bismuth oxide film is formed on the shear mask by using a spray device. Here, bismuth oxide is a heavy metal having a specific gravity of 8.7 and has a sedimentation property.

Conventionally, a waste liquid containing a slurry stored in a recovery tank of a spray device is generally flowed directly to a drain pipe, treated at an outdoor water treatment plant, reused or drained outdoors. Has been done. When the waste liquid is reused in the spray device, the overflow in the recovery tank is reused and drained. Although the wastewater treatment of waste liquid is not disclosed, a related one is, for example, JP-A-62-108423.

[0004]

In the above-mentioned prior art, when the waste water is a slurry having a sedimentation property when directly flowing to the drain pipe, precipitation of the slurry in the drain pipe becomes a problem. When the overflowed wastewater in the recovery tank is reused in the spray device, the dirty water in which the slurry has not been separated is reused, the circulation pump is clogged, and the slurry is collected in the recovery tank. There was a problem that it settled and cleaning was difficult.

A first object of the present invention is to prevent the slurry from settling in the drain pipe, and when the waste liquid is reused, clean water is reused to prevent the pump from clogging. An object of the present invention is to provide a spray waste liquid recovery device that can be used.

A second object of the present invention is to provide a spray waste liquid recovery device which can facilitate the recovery of the slurry.

[0007]

In order to achieve the above-mentioned first object, in a spray apparatus using a spray solution containing a sedimentable slurry, waste liquid in a recovery tank of the spray apparatus is supplied, The slurry is separated by settling,
The present invention is characterized in that a sedimentation tank for draining or reusing the lumber is disposed near the spray device.

In order to achieve the above-mentioned second object, a saucer is provided at the bottom of the settling tank of the above-mentioned first means.

[0009]

According to the first means, the waste liquid in the recovery tank of the spray device is temporarily stored in the precipitation tank. Therefore, in the settling tank, the settling slurry is separated into the sewage by the settling action of the slurry. Since the sewage water is caused to flow to the drain pipe, the slurry is prevented from settling in the drain pipe. In addition, when reusing the water, while reusing clean water,
Prevents pump clogging.

According to the second means, since the receiving tray is provided at the bottom of the precipitation tank of the first means, the coagulated precipitation slurry can be easily removed by pulling the receiving tray out of the precipitation tank and taking it out. Can be collected.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In the spray device 1, the spray liquid 4 is sprayed onto the object 2 to be sprayed by the spray nozzle 3.
Below the sprayed body 2, a collection tank 5 for collecting waste liquid is installed. A waste liquid supply pipe 6 is provided below the recovery tank 5, and the bottom portion 5a of the recovery tank 5 is formed so that the waste liquid supply pipe 6 side is inclined low. Further, supply water 7 is supplied to the recovery tank 5 through a supply pipe 8.

A precipitation tank 10 is arranged near the spray device 1, and a supply port of the waste liquid supply pipe 6 extends to an upper portion of the precipitation tank 10 and is piped. Settling tank 1
No. 0 is provided with a mulch water drainage port 11 for receiving the overflowing mulberry water on a side face away from the side where the waste liquid supply pipe 6 is disposed, and a drainage pipe 12 is connected to the mulberry water drainage port 11. In addition, a sedimentation tank 10 is provided near the boiled water drainage port 11.
Gourd water supply pipe 13 for supplying the glazed water in the collection tank 5
Is provided, and a pump 14 is provided in the middle of the hogwater supply pipe 13. Further, the bottom portion 10a of the precipitation tank 10 is
The waste liquid supply pipe 6 side is low, and the sludge discharge port 11 and the sludge water supply pipe 13 side are formed so as to be high, and a residual drainage recovery port 15 is provided at the bottom of the precipitation tank 10. In addition, a cover 16 is provided on the precipitation tank 10.
Is provided, and the saucer 1 is provided at the bottom 10a of the precipitation tank 10.
7 is installed. Partition plates 18 and 19 are arranged on the cover 16 and the tray 17 so that the waste liquid supplied from the waste liquid supply pipe 6 to the sediment tank 10 meanders through the sewage drainage port 11 and gradually flows. .. That is, the partition plate 1
8 and 19 are arranged alternately, the partition plate 18 is open at the bottom, and the partition plate 19 is open at the top.

Next, the operation will be described. When the spray liquid 4 of the spray nozzle 3 contains a slurry having a sedimentation property, this slurry is deposited on the bottom portion 5 a of the recovery tank 5. However, since the bottom 5a of the recovery tank 5 is inclined so that the waste liquid supply pipe 6 side is downward, the slurry precipitates on the waste liquid supply pipe 6 side, and the waste liquid containing a large amount of slurry precipitates from the waste liquid supply pipe 6. It is supplied to the tank 10. Further, in the settling tank 10, the waste liquid supplied from the waste liquid supply pipe 6 gradually meanders by the plurality of partition plates 18 and 19 to flow into the mulberry water discharge port 11 and the mulberry water supply pipe 13, and directly Do not flow into the drainage port 11 and the gourd water supply pipe 13 (recycled water intake port).

In this way, in the precipitation tank 10,
The purified sewage separated into the precipitation slurry and the sewage is discharged from the sewage drainage port 11 and supplied to the recovery tank 5 through the sewage supply pipe 13 by the pump 14 for reuse. As a result, clogging of the pump 14 is prevented, and the inside of the spray device 1 is easily cleaned without re-mixing the slurry into the spray device 1. Further, since the receiving tray 17 is disposed on the bottom portion 10a of the precipitation tank 10, the slurry precipitated in the precipitation tank 10 adheres to the receiving tray 17 and solidifies. The slurry can be easily collected. In addition, the remaining drainage water from the precipitation tank 10 is
It can be easily recovered by the residual drainage recovery port 15 provided at the bottom of the inclined bottom part 10a of 0.

[0015]

According to the present invention, the waste liquid in the recovery tank of the spray device is supplied and the slurry is separated by precipitation,
Since a sedimentation tank for draining or reusing the wastewater is installed in the vicinity of the spray device, it is possible to prevent the slurry from settling in the drain pipe, and when reusing the waste liquid, clean water Can be reused to prevent pump clogging. If a saucer is installed at the bottom of the precipitation tank,
The slurry can be easily collected.

[Brief description of drawings]

FIG. 1 is a schematic configuration explanatory view showing an embodiment of a spray waste liquid recovery apparatus according to the present invention.

[Explanation of symbols]

 1 Spray Device 2 Sprayed Object 3 Spray Nozzle 4 Spray Liquid 5 Recovery Tank 5a Bottom 6 Waste Liquid Supply Pipe 10 Precipitation Tank 10a Bottom 11 Worm Water Drain 13 Wow Water Supply Pipe 14 Pump 17 Saucepan 18, 19 Partition Plate

Claims (3)

[Claims] 1. In a spray device using a spray liquid containing a slurry having sedimentation property, a waste liquid in a recovery tank of the spray device is supplied, the slurry is separated by settling, and sewage is drained or reused. A spray waste liquid recovery device, characterized in that a precipitation tank is arranged in the vicinity of the spray device. 2. The spray waste liquid recovery device according to claim 1, wherein a bottom part of the recovery tank is formed so that a side of the waste liquid supply pipe to the precipitation tank is slanted low. 3. The bottom portion of the settling tank according to claim 1, wherein the bottom portion of the sedimentation tank extends downward from the recovery tank, and the bottom portion of the sedimentation tank is inclined, and the bottom portion of the effluent drainage port or the effluent water supply pipe side is inclined. A spray waste liquid recovery device characterized in that