JPH10137510A - Device for separating and recovering solid in water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a device for recovering solid in water, especially paint residue, etc., mixed in the washing water of a painting booth. SOLUTION: This device includes an outer tank 1 provided with a water discharge port at its bottom, an inner tank 3 to be placed in the outer tank 1 with the bottom wall 14 formed with a porous body and provided with the inversive wall 17 with a part of the opposed side walls developed outward with the bottom of the side walls as a fulcrum and with the respective top edges brought into sliding contact with the inner wall of the outer tank 1, a relative displacement means 6 operating for the inner tank 3 to expose above the outer tank 1 and a reciprocating means 20 provided with a presser plate 19 thrusted in from one side of an opening formed by inverting the inversive wall 17 outward while the inner tank 3 is exposed above the outer tank 1 and discharging the separated solid toward the other side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a solid substance in water,
More particularly, the present invention relates to a device for collecting paint scum and the like mixed in washing water of a painting booth.

[0002]

2. Description of the Related Art Conventionally, methods for recovering paint residue and the like mixed in washing water in a coating booth include a centrifugal separation method and a water surface scraping method. The disadvantages of these methods are that paint scraps that are not recovered and are returned to the washing water are more numerous than paint scraps that are collected in the apparatus, and are less efficient in maintaining the water quality of the washing water. In particular, in the case of the centrifugal separation type, it takes time and effort to clean the collected paint residue and the like from the inside of the apparatus.

[0003]

As the painting operation in the painting booth continues, the amount of paint used increases, thereby promoting the deterioration of washing water in the painting booth. And
Deterioration of washing water (a state containing a lot of paint residue etc.)
If the painting booth continues to operate, problems such as dirt in the pipes for circulating washing water and stains on the booth inner wall will occur, and eventually, the deteriorated washing water will adhere to the work, and the quality of the work Will be affected.

[0004] In view of the above, in the present invention, for example, as a method of delaying the deterioration of the washing water in the coating booth, a method using an apparatus having two inner and outer tanks, which is different from the conventional recovery method, is used. An object of the present invention is to provide an apparatus capable of efficiently collecting more paint residue mixed in washing water.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for separating and recovering solids in water, comprising: an outer tank provided with a drain port at the bottom; a porous body accommodated in the outer tank and having at least a bottom wall formed of a porous body. An inner tub comprising an inverted wall in which a part of the opposing side wall is developed outward with the bottom of the side wall as a fulcrum and each top edge is slid in contact with the inner wall of the outer tub,
A relative displacement means operable to expose the inner tub on the outer tub, and an opening formed by the falling wall being turned outward in a state where the inner tub is exposed on the outer tub. Reciprocating means including a push plate for rushing in from one side and discharging the separated solid matter to the other, whereby the solid matter in water can be separated and recovered efficiently.

According to a second aspect of the present invention, there is provided the apparatus according to the first aspect, wherein the solids disposed below the other opening and pushed in by the push plate of the reciprocating means are pushed in. A tank is added, whereby the separated solid can be continuously collected.

According to a third aspect of the present invention, in the apparatus according to the first aspect, a flocculant storing means for charging the flocculant into the water in the inner tank is provided, whereby solid matter in the water is removed. Aggregation makes it possible to increase the collection efficiency.

[0010] In the apparatus according to the fourth aspect, in the apparatus according to the first or third aspect, when the coagulant is introduced, a stirring blade provided in the inner tank or the outer tank, By adding a stirrer including a motor that drives the blades to rotate, it is possible to promote the coagulation of the solid matter, particularly when a coagulant is introduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG. 1 is a system diagram showing an example in which the apparatus of the present invention is installed in a washing water circuit of a painting booth for collecting paint residue and the like using water. A guide 4 is fixedly provided at an upper end portion of an inner tank 3 housed in the outer tank 1 in an outer tank provided with a drainage port 2 at the bottom, and the guide 4 follows a track 5 schematically shown in the drawing. Then, it is configured to move so as to be almost entirely exposed on the outer tub 1 via a cylinder device 6 as a related displacement means.
In practice, the outer tank 1 is lowered in FIG.
It is also possible to adopt a structure in which the inner tank 3 is exposed.

The washing water 7 in the tank 8 in which the washing water 7 is stored is sucked up by a pump 9 and sprayed on the wall of the coating bush by a shower device 10 and is sprayed by a coating gun (not shown). When the paint is sprayed on the work, the excess paint that has reached near the wall of the paint bush by the air pressure of the paint gun is washed with the wash water 7, and the wash water 7 contains the paint. The liquid is returned to the tank 8 again with scum and the like.

The washing water containing the coating residue and the like refluxed into the tank 8 is supplied into the inner tank 3 via a pump 11, where a coagulant or a stirring device described later is used as necessary. Then, the paint scum and the like are deposited on the inner bottom of the inner tank 3, and the washing water separated from the paint scum and the like flows out into the outer tub 1 through the porous bottom wall and side walls of the inner tub 3, and It is returned from the mouth 2 to the tank 8 via the pipe 12. Reference numeral 13 denotes an on-off valve provided in the pipe 12.

FIG. 2 is a schematic perspective view showing an example of the inner tank 3. In this example, the bottom wall 14 and the side wall 15 are made of a porous material and a pair of opposing side walls 15 (FIG. 2 only one is shown), the bottom of these side walls is configured as an inverted wall 17 which expands outward with a hinge 16 as a fulcrum, whereby an opening 18 is formed. Is formed. In the drawing, the above-described cylinder device 6 is disposed on the side wall side where the opening 18 is not formed.

When the inner tub 3 is accommodated in the outer tub 1, the inverted walls 17, 17 are connected to the outer tub 1 as shown in FIG.
In FIG. 3 showing a state in which the inner tub 3 is exposed on the outer tub 1 by the action of the cylinder device 6, the inverted walls 17, 17 are turned outward. Thus, the opening 18 is fully opened. In this figure,
Reference numeral 1a denotes an expanding edge formed on the upper edge of the outer tub 1 so that the inner tub 3 can be smoothly moved in and out of the outer tub 1.

The push plate 1 to be inserted into these openings 18
As described above, the cylinder device 20 as the reciprocating means provided with the pressure plate 9 is disposed above the outer tank 1 at a position where the inner tank 3 is exposed, and is opposed to the opening 18. Reference numeral 19 denotes the operation of the cylinder device 20, which rushes into the inner tank 3 from one opening 18, and transfers paint residue and the like separated and deposited on the bottom wall 14 of the inner tank 3 to the outside from the other opening 18. Let it go. In FIG. 3, reference numeral 21 denotes a recovery tank.

As described above, when a tank 22 is provided as a flocculant storage means as shown in FIG. 1 in order to promote the flocculation of paint residue and the like, it is desirable to provide a stirring device 23 at the same time. In that case, as shown in FIG.
A stirring blade 26 is attached to a lower end of a rotating shaft 25 of a motor 24 as a motor, and the rotation of the stirring blade 26 stirs water in the inner tank 3 and the outer tank 1. As described above, since the rotating shaft 25 penetrates vertically through the center of the inner tank 3, when the stirring device 23 is employed, the push plate 19 has the rotating plate 25 as shown in FIGS. 5 and 6. In order to avoid the shaft 25, a gap 27 is formed at the center.

In the apparatus having the above-described configuration, a series of operations are sequentially performed with time using a control circuit as shown in FIG.

[0017]

According to the apparatus having the above structure of the present invention, solid matter in water, for example, paint residue contained in washing water in a coating booth can be continuously and automatically and efficiently separated and recovered.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an example in which the present invention is installed in a washing water circuit of a painting booth.

FIG. 2 is a schematic perspective view of an inner tank.

FIG. 3 is an explanatory view showing a state in which an inner tank is exposed on an outer tank.

FIG. 4 is a perspective view showing a state where a stirring device is attached to the inner tank.

FIG. 5 is a perspective view of a push plate provided with a stirring device.

6 is a plan view showing a relationship between a push plate employing the push plate shown in FIG. 5 and a rotating shaft of a stirring device.

FIG. 7 shows an example of a control circuit of the device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer tub 2 Drain port 3 Inner tub 6 Cylinder device (related displacement means) 14 Bottom wall 15 Side wall 17 Falling wall 18 Opening

Claims (4)

[Claims] 1. An outer tank provided with a drainage port at the bottom, and at least a bottom wall accommodated in the outer tank and having a bottom wall formed of a porous body, and a part of an opposing side wall being formed with the bottom of the side wall as a fulcrum. An inner tub having an inverted wall which is developed into the inner tub of the outer tub and whose top edge is slidably contacted with the inner tub; a relative displacement means operable to expose the inner tub on the outer tub; Reciprocating means comprising a push plate for projecting from one of the openings formed by the reversing wall being revolved outward in a state where the revolving wall is revolved outwardly and discharging the separated solid matter to the other. Equipment for separating and recovering solids in water. 2. The solid matter in water according to claim 1, further comprising a collection tank disposed below said other opening and for pushing solid matter discharged by a push plate of said reciprocating means. Separation and recovery equipment. 3. The apparatus for separating and recovering solids in water according to claim 1, further comprising a flocculant storage means for charging the flocculant into the water in the inner tank. 4. When the coagulant is mainly charged, a stirring blade provided in the inner tank or the outer tank;
4. The apparatus for separating and recovering solids in water according to claim 1 or 3, further comprising a stirrer comprising a prime mover for rotating and driving the stirring blades.