JPS5814975Y2 - Vacuum type “filtration” device - Google Patents

Description

[Detailed Description of the Invention] As a method for dehydrating and recovering paint scum from a slurry liquid discharged from a painting booth, an r-filtration device as shown in FIG. 1 has been generally used.

In FIG. 1, one sheet of paper 1 is stacked endlessly on the upper surface of a conveyor 2 driven by a drive device 3 and is automatically conveyed from right to left as shown by the arrow. is done intermittently.

Then, the saw paper 1 enters the liquid in the ship-shaped liquid chamber 4, and the pipe 5
The paint sludge 6 discharged together with the liquid is attached to or on top of the liquid and comes out from the drinking bowl on the discharge side, and is dehydrated and discharged.

In this case, the sewage containing paint sludge 6 in the liquid chamber 4 is suctioned into a suction chamber T provided below the conveyor 2, and the liquid is reduced to 1 paper 1.
The r liquid flows out from the pipe 8, and the paint sludge is sent to the discharge side together with the paper 1 and discharged to the outside.

Note that 9 in the figure is a suction device. In this case, when one sheet of paper 1 becomes clogged, the liquid level rises, and a float switch (not shown) operates to automatically rotate the conveyor 2, so that one sheet of paper 1 is intermittently fed.

FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and shows a sealing structure provided to prevent the slurry liquid in the liquid chamber 4 from passing through areas other than the paper as much as possible. This is a sealing material that presses down one side of a sheet from both sides.

Reference numeral 11 designates the main body, and 12.degree. 12 designates conveyor supports that support the lower surfaces of both sides of the conveyor 20, respectively.

However, with the seal structure shown in Fig. 2, there is a risk that paint scum will adhere to the contact area between the sealing material 10 and the paper 1, and that the paper 1 will be torn when it is fed. This has the disadvantage that the particles become trapped under the sealing material 10, pushing up the sealing material 10 and nullifying the sealing effect.

Further, if the sealing material 10 does not have a sealing effect, paint sludge will accumulate between the conveyor 2 and the conveyor receiving seat 120, and the movement of the conveyor 2 will knead this paint, resulting in an increase in the driving resistance of the conveyor 2.

Furthermore, if the conveyor 2 is stopped for a long period of time, the paint scum will solidify and drive resistance will increase significantly, which may cause problems with the drive unit such as deformation of the conveyor.

Next, FIGS. 3 to 5 show other conventional vacuum filtration devices,
To explain the state of adhesion of paint sludge to both ends of the conveyor, in this case, the conveyor receiver creates a fluid passage at both ends 13 of the conveyor 20 between the seat 12 and the paper 10, as shown by the arrows in FIG. , paint scum gets stuck here.

In this way, both ends 13 of the conveyor 20 are clogged with paint sludge,
When the presser foot of the conveyor 2 is removed so that the paper sheet 1 does not come into contact with the presser foot and is torn, the end portion 1a of the sheet sheet 1 rises as shown in FIG. .

Further, the paint sludge 14 adhering to both ends of the conveyor 20 protrudes from the discharge side of the main body, and a sprocket (not shown) gets caught in this, and the paint sludge adheres to this sprocket and further grows.

Also, if the conveyor 2 is stopped for a long time, paint scum will stick to it and the conveyor 2 will become wrapped around the sprocket or pulled, making it impossible to operate, or the drive chain may break.
If the sprocket mesh becomes shallow, conveyor 2
There was a drawback that the feed could not be performed normally.

The present invention was proposed in order to solve the above-mentioned drawbacks of the conventional technology, and is provided with a conveyor or holder that holds a piece of paper and the upper ends of both side walls are higher than the water level of the drainage chamber, so that dirt such as paint scum can be removed. It is an object of the present invention to provide a vacuum type sifting device which prevents the device from becoming inoperable by preventing it from coming into contact with anything other than one piece of paper.

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 6 to 11, reference numeral 15 denotes a liquid chamber into which a liquid 16 containing suspended matter is supplied, and a piece of paper is placed at the bottom of the liquid chamber 15. 17 is the 6th
It is supplied so as to move in the direction of the arrow in the figure, and is stretched and held by the conveyor 18 or a holder 18a attached to the conveyor so as to be deformed into a U shape.

As shown in Fig. 7, the conveyor 18 is divided in its width direction and connected by joints 18b, and as shown in Fig. 8, a holder 18a made of a deformable material and structure with good water permeability under the liquid surface is attached. Therefore, the guide 19 and the receiver are deformed according to the tool 20.

The guide 19 is calculated so that the conveyor 18 or holder 18a is narrower on one side A than the main body 21 in the liquid chamber 15 because one paper 17 with a width C is deformed into a U shape with a depth greater than the liquid depth in the liquid chamber 15. ing.

In addition, the guide 19 has a sealing device installed in the suction chamber 22 below the conveyor 18, and outside of the sheet 17 near the end of the conveyor 18 or the holder 18a, in order to maintain a vacuum in the suction chamber 22.

The sealing device is a fixed seal 2 whose one end is fixed to the main body 21.
3, one end is in contact with the other end of the fixed seal 23, and
The other end is attached to both side walls of the conveyor 1B or the holder 18a, and both ends of the paper 170 are positioned thereon.
It is composed of a rotary seal 24 that moves together with the paper 17 as it moves.

An elastic material is used for either the fixed seal 23 or the rotary seal 24 so that the two come into direct contact to keep the suction chamber 22 airtight.

In this way, the rotary seal 24 is attached to the conveyor 18 or the holder 18a, and the other end that does not contact the fixed seal 23 has a length that overlaps the end of one sheet of paper 11, and allows water to flow and vent to a position below the planned liquid level. It has a material structure with no characteristics.

The button and receiver 20 are used in place of the gas and f-driver 9 of the liquid chamber 15.

FIG. 7 shows that when the conveyor 18 conveys the p paper 11, the 8th
The figure shows a case in which one sheet of paper 17 is conveyed by a holder 18a attached to the conveyor 18, where A indicates before entering the liquid chamber 15, each mouth is in the liquid chamber 15, and C indicates each of the liquid chambers 1 and 17.
5 is a cross-sectional view illustrating the shapes of the conveyor 18 or holder 18a and one sheet of paper 17 after coming out of the paper sheet 5. FIG.

As explained in detail above, the present invention is capable of holding a piece of paper supplied to the bottom of the slug chamber and stretched, and is also stretched and held in a U-shaped cross section, with the upper ends of both side walls of the swath chamber being stretched. Since a conveyor or holder is provided that is higher than the water level of the liquid containing the suspension, a piece of paper forms a U-shape with both ends located higher than the water level on the conveyor or holder, and the liquid containing paint sludge forms a U-shape on the conveyor or holder. There is no dirt attached to the filtering device for paper other than one paper. Therefore, the device will not become inoperable due to the dirt sticking to it.

It is also fixed to both ends of the conveyor or holder, and
A sealing device that can be transported together with the paper and a suction chamber provided below the conveyor holder are provided, and the sealing device is fixed to both ends of the conveyor or holder and can be transported together with the paper. It consists of a rotary seal that can rotate, and a fixed seal whose end is fixed to the main body and the rotary seal abuts, and one sheet of paper comes into contact only with the conveyor or holder and the rotary seal, so that one sheet of paper can be moved by movement. There is no defect such as breakage, and smooth filtration operation is possible, and the sealing device maintains the suction effect of the suction chamber, maintains the overflow effect of the vacuum type r-filtration device, and prevents performance deterioration. .

[Brief explanation of drawings]

Figure 1 is a side sectional view showing an example of a conventional vacuum filtration device;
Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Fig. 3 is a front sectional view of another conventional vacuum type filtration device, and Fig. 4 is a plan view of the same essential parts.
Fig. 5 is a sectional view illustrating the state in which paint sludge accumulates at both ends of the conveyor in the apparatus shown in Fig. 3, and Fig. 6 is a side sectional view schematically showing a vacuum type filtering apparatus showing an embodiment of the present invention. , A in FIGS. 7 and 8 are section B in FIG. 6, ・mouth is section C in each, C is a cross-sectional view of section 9 in FIG. 6, and FIG. 10 is a sectional view taken along line FF in FIG. 9, and FIG. 11 is a sectional view showing FIG. 10 in detail. Explanation of the main parts of the figure, 15...Liquid chamber (flow chamber). 16...Liquid containing suspension, 17...Steel paper, 18
...Conveyor, 18a...Holder, 19...Guide, 21...Main body, 22...Suction chamber, 23...
Fixed seal (sealing device), 24...Rotating seal (sealing device).

Claims (1)

[Scope of utility model registration request] In a vacuum type r-filtration device for paint sludge suspension, there is a filtration chamber to which a liquid containing a paint sludge suspension is supplied, and a filtration chamber which is supplied to the bottom of the filtration chamber and stretched over it. In addition to holding P paper, the cross section U is
a conveyor or holder which is held in the form of a stretched frame and whose upper ends on both side walls are higher than the water level of the liquid, and a rotary seal which is fixed to both ends of the conveyor or holder and can be transferred together with the one paper; a sealing device comprising a fixed seal whose end is fixed to a main body and which the rotary seal abuts;
a suction chamber provided below the conveyor or holder, the conveyor comprising a side conveyor that can be tilted or upright, and a bottom conveyor, the holder being water permeable and deformable, and the holder being water permeable and deformable; 1. A vacuum type ripping device, characterized in that the conveyor or holder and the rotary seal are brought into contact with each other.