JP2019115875A - Clogging prevention device of strainer in separator - Google Patents

Abstract

To provide a clogging prevention device of a strainer in a separator, capable of preventing a disc for screen from hanging down by its weight, mating with a comb tooth-shaped scraper from becoming bad, and frictional resistance from becoming high, and preventing clogging of a carrier or the like.SOLUTION: A support shaft is inserted at a fixed interval into the inner diameter side of a ring-shaped disc 8, and discs 8 laminated in multistage are supported by the support shaft, to thereby form a screen part 3. A comb tooth-shaped scraper 12 is arranged on the outer peripheral surface of the screen part 3, and attachment is removed by the scraper 12, to thereby prevent clogging.SELECTED DRAWING: Figure 1

Description

In the present invention, for example, in a facility where the carrier is suspended in waste liquid to microbize the contaminants in the waste liquid, the microorganism and the carrier are attached to the screen of the strainer by the flow and installed in the contaminant treatment tank to cause clogging. The present invention relates to an anti-clogging device for adhering and removing substances, and relates to an anti-clogging device for a strainer which removes the carriers and other suspended matters to which the microorganisms are attached and prevents the deterioration of separation performance over time. is there.

As a clogging prevention device of this type of separator, as a representative example using an annular filter, one described in Japanese Patent Application Laid-Open No. 2013-107705 (Patent Document 1) is known.

This content is a screen device installed in a wastewater treatment tank, and the screen device is such that a fluid carrier removal unit and a drive mechanism are attached to the main body, and the main body is treated water in the treatment tank. The water flow section includes a water intake section for taking in and a drainage section for discharging treated water to the outside of the treatment tank, and the water intake section has a rotatable bottomed cylindrical screen section provided with a filtration section on the circumferential surface, the flow The carrier removal unit is disposed to approach or abut on a rotational circumferential surface of the screen unit, and the drive mechanism is configured to rotationally drive the screen unit.

In this case, since the distance between the screens of the screen portion is very small, the carrier (ring) is deformed by gravity with time and the distance between the comb-like scraper and the laminated ring plate becomes too narrow, resulting in adhesion performance Or the gap between the ring plate and the scraper becomes too narrow to cause clogging, which causes a problem of reduced performance.

In addition, manufacturing errors are likely to occur at the time of assembly, which requires skill and effort for assembly, and requires regular maintenance over time.

JP, 2013-107075, A

The present invention is a separator for efficiently removing, for example, a gel-adhering support or the like adhering to the disks of a screen in the separation device described in Patent Document 1, wherein the disks are deformed over time. An object of the present invention is to provide a separation device that is easy to assemble even if it is not an expert.

In order to achieve the above object, the invention according to claim 1 is characterized in that in the device for preventing clogging of a strainer in a separator, shaft meshing portions are formed at regular intervals on the inner diameter side of a disk formed in a ring shape in plan view. A shaft is formed on the inner diameter side of the disk with an engagement groove having a cross-sectional comb-like shape formed on the outer peripheral surface, and this shaft is engaged with the toothed portion of the disk to form a strainer. An upper lid having a fluid passage hole formed in the upper part thereof, a bottom lid on the lower surface, and a cylindrical filter portion formed by fixing the upper lid and the bottom lid by the shaft, A rotating shaft is inserted into the center of the upper lid and the lower lid of the strainer, and this rotating shaft is rotatably formed by a motor on the upper lid, and an outer peripheral surface of the strainer is a tip of a comb tooth in a groove between disks. Comb with a bit bite In which it characterized in that a Jo scraper.

According to the present invention, in a treatment facility mainly producing contaminants in waste liquid, the distance between the carrier separating disks can be forcibly supported by the comb-like support shaft to reliably fix the disk intervals. Therefore, it is possible to prevent the disc interval from hanging down due to gravity over time.

In addition, it is easy to set the spacing of the disc at the time of manufacture, and the disc is supported on the circumference (inner diameter) by the support shaft with a constant spacing, so the disc sags over time and deforms due to clogging, etc. Separation performance does not decrease.

Also, since there is no reduction in performance due to such deformation, maintenance is almost unnecessary.

It is explanatory drawing of the whole separator. It is a top view of the disk for screens. It is a top view of the state which assembled the screen part. It is a top view which shows the disc and the support shaft of the state which assembled the screen part. It is a side view of a comb-tooth shaped support shaft. It is a top view of a comb-tooth shaped support shaft. It is a side view which shows the engagement relation of a scraper and a disk. It is a top view which shows the engagement relation of a scraper and a disk. It is a side view of a scraper. It is a top view of a scraper.

Next, an embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 shows an embodiment in which the separator according to the present invention is installed in a carrier treatment tank, and the numeral 1 indicates a separator, and this separator 1 has a screen unit 3 in the treatment tank 2 in the treatment tank 2. It sinks and is installed.

In this state, when the motor 5 installed at the upper part of the separator 1 is rotated, the screen unit 3 is rotated via the rotating shaft 5a, and the rotation of the processing liquid 4a in the processing tank 2 is caused by the rotation of the screen unit 3 The carrier 9 intrudes into the inside from the circumferential surface of the disk 8 and floats in the waste liquid 4a at the time of this intrusion also from the gap of the disk 8, but the solid carrier 9 adheres to the disc 8 and only the waste liquid 4a Are discharged from the center of the screen 3 through the through hole 10 a of the canopy 10 to the discharge port 4 side.

In this operation, a comb-like scraper 12 is attached by a shaft 12b to the screen portion 3 (disk 8) as shown in FIGS. 7 and 8, and the tip of the comb 12a of the scraper 12 is shown in FIG. The carrier 9 attached to the disk 8 is scraped off by the tip 12a of the comb-like scraper 12 and returned to the inside of the processing tank 2 because the carrier 9 is slightly inserted in the gap around the disk 8 as described above. Used for

In the disk 8, dust is also mixed in with the carrier 9, and the dust is also scraped off by the scraper 12.

By such an action, the disc 8 is prevented from clogging with the carrier 9 and dust and the performance is maintained for a long time.

In the above-described configuration and operation, as shown in FIG. 1, the screen portion 3 is integrally formed by the ring rib 15a of the support shaft 15 within the inner diameter 8a in which the disks 8 are stacked in multiple stages.

Although the relationship between the inner diameter 8a in the disk 8 and the support shaft 15 is six at equal intervals in this embodiment, there is no problem in practice if it is more or less than this number, but the weight of the disk 8 is The number is not limited as long as it does not sag downward, but preferably 6 to 8 are the best.

In the present embodiment, the thickness of the disk 8 is 2.0 mm, the pitch distance is 4.5 mm, and the groove distance is 2.5 mm.

Ring ribs 15a are formed in multiple stages around a comb-like support shaft 15 for supporting the disc 8 at six locations, and the distance between the ring ribs 15a is 2.0 mm, the thickness is 2.5 mm, and the height ) Is 3.5 mm.

As shown in FIGS. 5 and 6, the comb-tooth shaped support shaft 15 supports the disk 8 from the inner diameter side by the ribs 15 a, sets a distance to prevent drooping, and the lower end side is the bottom cover 11. The upper cover 10 and the lower cover 11 are fixed to the support shaft 15 to form the screen portion 3, and the screen portion 3 is rotated by the motor 5.

The scraper 12 is fixed to the fixed frame 1a through a mounting plate as shown in FIGS. 7 and 8, and the tip of the scraper 12 is about 5 mm in the groove between the tips of the disks 8 as shown in FIG. It bites in and scrapes off the carrier 9 and dusts by this biting to eliminate clogging.

When maintenance becomes necessary over time, the scraper 12 is removed from the fixed frame 1a, and the support shaft 15 is further removed from the disk 8, disassembled, and washed with water or oil.

The separator of this embodiment has the above-described configuration and operation, and its application can be applied to a separator for removing other mixed impurities besides the form in which the contaminants in the waste liquid are microbized by the carrier and removed. is there.

In the embodiment, the separator 1 of the present invention is installed vertically in the processing tank 2, but naturally, there is also an example of installation as a horizontal type, and this installation example is determined according to the situation of the site Ru.

1 Separator 3 Screen (Cylindrical)
5 motor 5a rotary shaft 8 disc 10 upper lid
11 bottom lid 12 scraper 15 support shaft

Claims (1)

The shaft meshing portion is formed at a constant interval on the inner diameter side of the disk formed in a ring shape in plan view,
A shaft body is formed on the inner diameter side of the disc with an engaging groove having a cross-sectional comb-like shape formed on the outer peripheral surface, and this shaft body is engaged with the toothed portion of the disc to form a strainer.
An upper lid having a fluid passage hole formed at the top of the strainer is disposed, a bottom lid is disposed at the lower surface, and a cylindrical filter portion is formed by fixing the upper lid and the bottom lid with the shaft. ,
A rotating shaft is inserted in the center of the upper lid and the lower lid of the strainer, and the rotating shaft is formed rotatably by a motor on the upper lid,
A comb-like scraper is disposed on the outer peripheral surface of the strainer and in the groove between the disks, with the tips of the comb teeth slightly biting in;
An apparatus for preventing clogging of a strainer in a separator characterized by

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