JPH05237475A - Automatic recovering apparatus for paint scum - Google Patents

Abstract

PURPOSE:To recover mechanically and efficiently coating scum and to attempt to reduce burden of a worker. CONSTITUTION:The upper edge part of a container 4 is always held at a position being a little lower than the liq. face of a water tank 3 based on a detecting signal of a liq. face sensor 7. Then, a coating scum 1 and water 2 collected in the container 4 are sucked up in a coating scum remaining tank 14 of a separating apparatus 18 by means of action of a vacuum pump 13 and only the water 2 is sucked into a water recovering vacuum tank 15 through a filter 16 and the coating scum 1 is left in the coating scum remaining tank 14 and the coating scum 1 in the coating scum remaining tank 14 is carried out by means of a carrying out device 25 for recovering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic paint slag collecting device.

[0002]

2. Description of the Related Art Generally, in a paint factory, paints overlaid on various objects to be painted such as vehicles are collected together with water as a paint slag by a water shower and stored in an aquarium installed outdoors.

The paint slag collected in the water tank floats lighter than water on the surface of the water. Therefore, the paint slag that has floated on the water surface is periodically used by an operator by using a jig-like jig having a wire mesh at the tip. It was picked up and collected.

[0004]

However, if a worker uses a jig to periodically scoop up and collect the paint slag floating on the water surface as described above, the burden on the worker is very large. In addition, it had the drawback of being inefficient.

In view of the above situation, the present invention is to provide an automatic paint slag collecting device which can mechanically and efficiently collect the paint slag and reduce the burden on the operator.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a water tank for collecting and storing the oversprayed paint together with water as a paint slag by a water shower, a liquid level sensor for detecting the liquid level of the water tank, and the liquid level. A container for collecting paint dregs and water that floats in the water tank and is driven up and down so that the upper edge is located slightly lower than the liquid level based on the detection signal of the sensor, and the paint dregs and water in the container are sucked by a vacuum pump. And a separation device comprising a paint slag residual tank for separating and a water recovery vacuum tank connected to the paint slag residual tank through a filter, and a water level sensor for detecting the water level of the water recovery vacuum tank of the separation device. A recovery water return pipe for returning water in the water recovery vacuum tank to the water tank, and a paint residue in the paint residue residue tank of the separation device, which has an on-off valve that opens and closes based on a detection signal of the water level sensor. Unloading device for sending out and collecting The is characterized in that it comprises.

[0007]

Therefore, the liquid level of the water tank is detected by the liquid level sensor, and based on the detection signal of the liquid level sensor, the upper edge of the container is always kept at a position slightly lower than the liquid level of the water tank, The paint dregs and a small amount of water flow in and are collected.The paint dregs and water collected in the container are sucked up into the paint dregs residual tank of the separator by the operation of the vacuum pump, and only water passes through the filter. Is sucked into the water recovery vacuum tank, the paint slag remains and accumulates in the paint stagnation tank, and the water level sensor detects that the water sucked into the water recovery vacuum tank has reached the required level. The open / close valve is opened based on the detection signal of the water level sensor, the water in the water recovery vacuum tank is returned to the water tank through the recovery water return pipe, and the paint residue in the paint residue residue tank is sent out by the carry-out device. Be recovered.

[0008]

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

FIGS. 1 to 3 show one embodiment of the present invention, in which a paint spilled over the water tank 3 is placed in a water tank 3 in which the oversprayed paint is collected together with water 2 as a paint residue 1 by a water shower. A container 4 for collecting 1 and water 2 is arranged so that it can be moved up and down by the operation of a self-locking cylinder 5, and a liquid level sensor 7 for detecting the liquid level of the water tank 3 is attached to a rod 6 of the cylinder 5.

As shown in FIG. 2, the liquid level sensor 7 has three electrodes 9, 10, 11 having different lengths from the sensor body 8.
So that the intermediate electrode 10 substantially coincides with the height of the upper edge of the container 4, and the lower limit electrode 9 is located at a position lower than the intermediate electrode 10 by a required amount and the upper limit is located at a position higher by a required amount. By arranging each of the electrodes 11 of, the three electrodes 9, 10, 11 are all located above the liquid level or the lower limit electrode 9 is located below the liquid level. When it is recognized that the paint slag 1 is not collected in the container 4 and the cylinder 5 is extended and the upper edge of the container 4 is lowered, the lower limit electrode 9 and the intermediate electrode 10 are positioned below the liquid surface. Recognizing that the electrodes 9 and 10 are in conduction, the liquid level is at an appropriate position and the paint slag 1 and the water 2 are collected in the container 4, and the cylinder 5 is stopped without being operated to stop the container 4. It outputs a command to hold the upper edge in that position, and all three electrodes 9, 10, 11 Located under the surface the electrodes 10 and 11
When the liquid level is too high, it is recognized that the liquid level is too high and almost only water 2 is collected in the container 4, and only a small amount of the paint slag 1 is recognized, and the cylinder 5 is contracted to raise the upper edge of the container 4. Is output.

In FIG. 2, 12 is a rod 6 of the cylinder 5.
Is a guide roller for guiding.

Further, a paint slag residual tank 14 to which a water recovery vacuum tank 15 which can be maintained at a negative pressure by a vacuum pump 13 is connected via a filter 16 is connected to the container 4 via a suction pipe 17, Vacuum pump 1 for paint slag 1 and water 2 in container 4
3 constitutes a separating device 18 for sucking and separating.

As shown in FIG. 3, the paint slag residual tank 14 has a shape in which the width thereof gradually narrows from the upper part to the lower part, and a screw conveyor 20 rotatably driven by a motor 19 is attached to the lower end of the slag residue tank 14. The discharge port 22 of the conveyor 20 is provided with an opening / closing door 23 which is slid by the operation of the cylinder 21, and the discharge port 22
A trolley 24 for collecting the paint slag 1 is provided in the lower part of the separator, and the separating device 18 is provided by the screw conveyor 20 and the trolley 24.
The carry-out device 25 for sending out and collecting the paint slag 1 in the paint slag residual tank 14 is constructed.

The water recovery vacuum tank 15 is provided with a water level sensor 26 for detecting the water level and a vacuum gauge 27 for detecting the internal pressure, and for returning the recovered water 2 to the water tank 3 again. The recovered water return pipe 28 is connected, and an on-off valve 29 that opens when the water level reaches a certain level based on the detection signal of the water level sensor 26 and closes after drainage is completed is provided in the middle of the recovered water return pipe 28. ..

Next, the operation of the above embodiment will be described.

If all three electrodes of the liquid level sensor 7 are located above the liquid level of the water tank 3 or only the lower limit electrodes are located below the liquid level, the liquid level is too low and the container 4 It is recognized that the paint slag 1 is not collected on the surface of the container, and the signal from the liquid level sensor 7 extends the cylinder 5 to lower the upper edge of the container 4, and the lower limit electrode and the intermediate electrode are positioned below the liquid level. When the electrodes are conducted, it is recognized that the liquid level is at an appropriate position and the paint slag 1 and water 2 are collected in the container 4, the cylinder 5 is stopped, and the upper edge of the container 4 is held at that position. ..

On the other hand, when all three electrodes are located below the liquid surface and both electrodes are in conduction due to the fluctuation of the liquid surface, the liquid surface is too high and almost only water 2 is collected in the container 4 and the paint slag 1 It is recognized that only a small amount of liquid is sampled, the cylinder 5 is contracted by the signal from the liquid level sensor 7 and the upper edge of the container 4 is raised, and only the lower limit electrode and the intermediate electrode are located below the liquid level. When it is conducted, it is recognized that the liquid level is at an appropriate position and the paint slag 1 and the water 2 are collected in the container 4, the cylinder 5 is stopped, and the upper edge of the container 4 is held at that position.

As a result, the upper edge of the container 4 is always held at a position lower than the liquid level of the water tank 3 by a required amount, and the paint slag 1 and a small amount of water 2 flow into the container 4. Collected.

The paint slag 1 and the water 2 collected in the container 4 are
By the operation of the vacuum pump 13, it is sucked up into the paint dregs residual tank 14 of the separating device 18 via the suction pipe 17, only the water 2 passes through the filter 16 and is sucked into the water recovery vacuum tank 15, and the paint dregs 1 is It remains and accumulates in the paint slag residual tank 14.

When the water level sensor 26 detects that the water 2 sucked into the water recovery vacuum tank 15 has reached the required level, the open / close valve 29 is opened based on the detection signal of the water level sensor 26 to open the water recovery vacuum. The water 2 in the tank 15 is returned to the water tank 3 via the recovered water return pipe 28, and at the same time, the carry-out device 25
The screw conveyor 20 constituting the above is rotatably driven by the motor 19, the paint slag 1 in the paint slag residual tank 14 is sent out, the opening / closing door 23 is opened by the operation of the cylinder 21, and the discharge port 22 onto the dolly 24. Is discharged.

Thus, it is not necessary for the worker to periodically scoop up and collect the paint slag 1 that has floated on the water surface, and the paint slag 1 can be mechanically and efficiently collected, thus reducing the burden on the worker. Can be significantly reduced.

It should be noted that the automatic paint slag collecting apparatus of the present invention is not limited to the above-described embodiments, and it is needless to say that various modifications can be made without departing from the scope of the present invention.

[0023]

As described above, according to the paint slag automatic collecting apparatus of the present invention, the paint slag can be collected mechanically and efficiently, and the burden on the worker can be reduced. ..

[Brief description of drawings]

FIG. 1 is an overall schematic diagram of an embodiment of the present invention.

FIG. 2 is a detailed view of a part II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 1 Paint Slag 2 Water 3 Water Tank 4 Container 7 Liquid Level Sensor 13 Vacuum Pump 14 Paint Slag Residual Tank 15 Water Recovery Vacuum Tank 16 Filter 18 Separation Device 25 Outgoing Device 26 Water Level Sensor 28 Recovery Water Return Pipe 29 Open / Close Valve

Claims (1)

[Claims] 1. A water tank for collecting and storing the oversprayed paint together with water as a paint slag by a water shower, a liquid level sensor for detecting the liquid level of the water tank, and an upper edge based on a detection signal of the liquid level sensor. And a container for collecting the paint dregs and water floating in the water tank, which is driven up and down so as to be positioned slightly lower than the liquid surface, and a paint dregs for sucking and separating the paint dregs and water in the container by a vacuum pump. A separation device comprising a residual tank and a water recovery vacuum tank connected to the paint residue residual tank through a filter, a water level sensor for detecting the water level of the water recovery vacuum tank of the separation device, and a detection signal of the water level sensor A recovery water return pipe having an on-off valve that opens and closes based on the water recovery vacuum tank for returning the water in the water recovery vacuum tank to the water tank; and a carry-out device for sending out and recovering the paint residue in the paint residue residue tank of the separating device. It is characterized by having Automatic paint slag collecting device.