JPS6335308B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to wastewater containing activated sludge, iron powder, and other solids, as well as a wide variety of wastewater containing solids, solutions, solvents, and various raw solutions such as mixed liquids. The present invention relates to a filter device for removing or separating solids.

Many proposals have been made regarding this type of device for removing or separating solids from various types of wastewater and raw solutions, but conventionally known devices require a large installation area and are not suitable for use in sedimentation basins, Each of these methods had a number of drawbacks, such as filters that required a lot of manpower to operate due to clogging and other problems, and centrifugal separation that caused a large loss of power and noise during operation.

The present invention has been developed based on the above-mentioned viewpoints, and its purpose is to be compact, and to have a structure that does not cause clogging with solid matter due to the mode of operation and use. The object of the present invention is to propose a new filter device that has a high recovery rate of iron powder and other solids, can be operated unmanned for a long period of time, and has low operating power costs.

Hereinafter, the details of the present invention will be specifically explained with reference to the drawings. FIG. 1 is a sectional view (FIG. 2 BB sectional view) showing an embodiment of the filter device according to the present invention, FIG. 2 is a sectional view taken along FIG. 1 AA, and FIG. 3 is a rotating shaft 1.
2 and 13 are partially enlarged cross-sectional views of the first and second discs attached to the first disc and the second disc. FIG. 7 is an explanatory diagram showing another embodiment for magnetizing a disk. 1st
In the figure, 1 is the housing, 2 is the inlet for the liquid to be treated such as wastewater,
3, 4, 5, 6 are the first disks, 7, 8, 9, 10
11, 12, 13, 14 are rotating shafts, 15 is a leakage prevention plate, 16 is a scraping plate, 17
18 is an outlet for the treated liquid from which solids have been separated, and 18 is a solids discharge section. 19, 20, 2 in Figure 2
1, 22, 23, 24, 25, 26 are bearings, 27, 28, 29, 30, 31, 32, 3
3, 34 are sleeves, 35, 36, 37, 38,
39, 40, 41, 42 are Natsu, 43, 44,
45, 46 are coupling rings, 47, 48, 49,
50 is a motor, and 51, 52, 53, and 54 are permanent magnets. In Fig. 3, 12 and 13 are rotation axes, 4 and 5
is the first disc, and 8 and 9 are the second discs. Fourth
In the figure, 3, 4, 5, 6 are the first disks, 7, 8, 9,
10 is a second disk; 11, 12, 13, and 14 are rotating shafts; and 55 is an electromagnet having an iron core and a coil. 3, 4, 5, 6 in Fig. 5 are the first disks,
7, 8, 9, 10 are second disks, 11, 12, 1
3 and 14 are rotating shafts, and 56 is an electromagnet having an iron core and a coil. 3 in Figures 6 and 7,
4, 5, 6 are first disks, 7, 8, 9, 10 are second disks, 11, 12, 13, 14 are rotating shafts, 5
7, 58, 59, 60 are electromagnets having iron cores and coils.

The casing 1 is made of a non-magnetic material, and a part thereof has a liquid inlet 2 for receiving various liquids to be processed. A leak prevention plate 15 also made of non-magnetic material is attached to the housing 1 below the inlet 2, and is attached to the circumference and side surface of the first disk 3 attached to the rotating shaft 11. and is in contact with the second disk 7 on its circumference. The leak prevention plate 15 may be in the form of a rotatably supported elastic roller. A scraping plate 16 made of a non-magnetic material is attached to a part of the casing on the side opposite to the side where the inflow port 2 is provided, and a scraping plate 16 made of a non-magnetic material is attached to a first circle attached to the rotating shaft 14. It is in contact with the circumferential surface and side surface of the plate 6 and the circumferential surface of the second disk 10. Like the leakage prevention plate 15, this scraping plate 16 may also be in the form of a rotatably supported elastic roller.

On the side of the housing 1 where the scraping plate 16 is attached, there is a solid discharge section 18 in contact with the housing that discharges iron and solid matter removed from various liquids to be treated.
is provided.

The first disc and the second disc, which have different diameters, are made of corrosion-resistant metal such as stainless steel or 13Cr steel, or synthetic resin such as polyethylene, polyurethane, polyvinyl, acrylic, or nylon. The thickness is approximately 0.05 to 0.5 mm, but between the first disc and the second disc, the second disc is slightly thicker.

First discs and second discs are arranged alternately in the portion of each rotating shaft 11, 12, 13, 14 housed in the housing, and sleeves 27, 28 are arranged from both sides of the rotating shaft. ,29,30,31,32,33,3
4 through nuts 35, 36, 37, 38, 3
9, 40, 41, and 42 are fixed to the rotating shafts, but the alternate arrangement of the first disks and the second disks is opposite between adjacent rotating shafts. For example, on the rotating shaft 12, from the side connected to the motor 48, the second disk 8 is sequentially and alternately attached to the first disk 4, and the nuts 36, 40 are attached via the sleeves 28, 32. If it is fixed to the rotating shaft 12, then in the rotating shafts 11, 13 on both sides around the rotating shaft 12, the second disk 7, 9 is connected from the side connected to the motors 47, 49. The first discs 3, 5 are attached to the nuts 35, 3 through the sleeves 27, 31, 29, 33 in turn.
9, 37, and 41 are fixed to the rotating shafts 11 and 13, respectively. And each rotating shaft 11, 12, 1
3 and 14, the first disks are attached alternately with the second disks, and the first disks are in contact with the circumference of the second disk attached to the adjacent rotating shaft, and are attached to the adjacent rotating shaft. motors 47, 48, 49, which are in contact with the side surface of the first disk and are attached to one side of each rotating shaft 11, 12, 13, 14 via coupling rings 43, 44, 45, 46; 5
0, the contact surfaces of the first and second disks move at a relative speed, for example, at a speed of several to several tens of mm/min or less, synchronously or asynchronously in the same direction. It rotates slowly like this.

In addition, first discs 3, 4, which are alternately attached and fixed to each rotating shaft 11, 12, 13, 14,
5, 6 and the second discs 7, 8, 9, and 10 have a diameter of about 10 to
They form an interval of around 100 μm.

Both ends of each rotating shaft 11, 12, 13, 14 extend outside the housing, and motors 47, 48, 49, 50, so that it can rotate as the motor rotates. Permanent magnets 51, 52, 53, and 54 are attached to the other end of each rotating shaft, respectively, so that adjacent rotating shafts have opposite polarities, and the disks of each rotating shaft are particularly magnetic. Its body, a disk, is easily magnetized. That is, for example, in the case of the embodiment shown in FIGS. 1 and 2, each of the rotating shafts 11, 12, 13, and 14 is a magnetic material made of an iron-based alloy, preferably a ferromagnetic material that acts as a magnetic iron core. It is also preferable that at least one or both of the first and second discs is made of a magnetic material or a ferromagnetic material like the rotating shaft, and in this case, the magnetic disc is made of a magnetic material in a synthetic resin. A mixture of powders may also be used.

For example, waste water containing activated sludge, iron powder, and other solids is attached to each rotating shaft in the housing 1 from the inlet 2, and the liquid uneven surface of the discs that fit and engage with each other. The first discs 3, 4, 5, 6 and the second discs 7, 8, 9, which are attached alternately to each rotating shaft 11, 12, 13, 14, Since the magnetic flux is magnetized by the permanent magnets 51, 52, 53, and 54 and passes through the interlocking gaps of the discs 10, iron powder and the like contained in the waste water are attracted to the surface of each disc. In addition, solid waste contained in other wastewater is removed from the circumference and side surfaces of each of the first discs 3, 4, 5, and 6, and each of the second discs 7, 8, 9, and 10. It will not be able to pass through the gap between the circumference and will be left behind on the wavy, uneven surface. The wastewater from which iron powder and solid waste have been removed flows down through the gaps between the circumferences and sides of the discs that are in contact with each other, and is discharged from the outlet 17.

Iron powder attracted to the peripheral end face of each disc and on the circumference and between the sides of each first disc 3, 4, 5, 6, and between each second disc 7, 8, 9, 10. The solid waste on the circumference can be removed by rotating the adjacent rotating shafts by rotating each disk closely in the same direction, or by taking appropriate measures such as stopping or cutting off the magnetization intermittently. The first disc 3, 4, 5, 6 and the second disc 7, 8, 9, 1 attached to
It moves on the surface and circumference of 0 and is carried to the scraping plate 16. However, the scraping plate 16 is made of a non-magnetic material and is in contact with the circumference and side surface of the first disc 6 attached to the rotating shaft 14 and the circumference of the second disc 10. are fixed to the housing 1, so the first discs 3, 4, 5, 6 and the second discs 7, 8,
The iron powder and solid waste that have been transmitted on the surfaces and circumferences of 9 and 10 are removed from the rotating shaft 14 by a scraping plate 16 by using means such as intermittent demagnetization.
The solids are removed from the surfaces and circumferences of the first disk 6 and second disk 10 and discharged to the solids discharge section 18.

Magnetize the first discs 3, 4, 5, 6 and the second discs 7, 8, 9, 10 fixed to each rotating shaft 11, 12, 13, 14, or create lines of magnetic force in the gaps formed. As a method of penetrating the filter, it is possible to attach permanent magnets 51, 52, 53, 54 to each rotating shaft 11, 12, 13, 14 as shown in Fig. It is difficult to magnetize all of the disks fixed to the rotating shaft, and it is also difficult to intermittently interrupt the magnetization as described above, so we installed a solenoid coil with the permanent magnet in Figure 2 as an iron core. It would be necessary to replace it with a wound electromagnet, or as in the embodiment of FIG. 4, FIG. 5, FIG. 6, or FIG. 7. FIG. 4 shows that when the magnetic disks, for example, disks 4 and 5, are subjected to lines of magnetic force that act parallel to the disk surface so as to cross horizontally in the upper fan-shaped arc portions, FIG. This is a case in which magnetic poles are arranged facing each other at both ends in the direction in which the disk and the rotating shaft are arranged side by side, so that lines of magnetic force act parallel to the disk surface and between adjacent disks, and FIG. , which is partially the same as the case shown in Fig. 1 above, but in the case where an electromagnet is used, and Fig. 7 shows that in the laminated and interlocking part of each disc of the adjacent rotating shaft, a penetrating hole is formed in a direction perpendicular to the disc surface. This is an embodiment configured to cause lines of magnetic force to act in such a manner that the lines of magnetic force can effectively act on the gaps formed between the side surfaces of each disc. Here, 55,
Reference numerals 56, 57, 58, 59, and 60 are electromagnets for magnetizing both the large and small disks, but in these embodiments, the small disks may be made of non-magnetic material.

Further, in the present invention, when the magnetic flux density of the disk contact portion is set to 3000 Gauss or more, the performance can be exhibited even better.

The excitation power source for the coil of the electromagnet may be constructed by connecting a DC or AC power source via a switching element that can be turned on and off as appropriate, or by changing the direction of the excitation current periodically or as needed.・It is possible to use a device whose S pole can be changed or a device whose excitation intensity can be controlled.

Since the filter device of the present invention is constructed as described above, it does not require a large installation area and does not cause clogging or other troubles like conventional filter devices, so it can be said to be an ideal filter device. . It is also very effective in removing metal pieces such as iron powder, so it can also be used as a filter for passing machining fluids used in electrical discharge machining and the like.

Note that the configuration of the device of the present invention is not limited to the above-mentioned embodiments. That is, for example, in this embodiment, a motor was attached to each rotating shaft to rotate each rotating shaft, but it is also possible to rotate each rotating shaft with a single motor using gears, chains, belts, etc. Therefore, if magnetic powder is added and mixed in advance to the liquid to be treated and separated by the apparatus of the present invention, the solid content can be removed together with the mixed magnetic powder very efficiently.
In addition, ultrafine solid content is also separated, allowing the apparatus of the present invention to function more effectively. Also,
The shapes of both the large and small discs do not have to be perfect circles in a geometrical sense, but any shapes that can rotate while sliding in contact with each other at one point may be used, or even parts of them may be mutually compatible. A thin wire suspended between two adjacent axes or a ring-shaped band may be used instead, and the mounting and driving method of the disk, the magnetization device, etc. are within the scope of the present invention. The design can be changed freely,
The present invention encompasses all of them.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram (sectional view taken along line BB in FIG. 2) showing an embodiment of the filter device according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 shows the rotating shaft 12, 1
FIGS. 4, 5, 6, and 7 are partially enlarged sectional views of the first and second disks attached to magnetization of the first and second disks. It is an explanatory view showing another example for. 1... Housing, 2... Processed liquid inlet, 3, 4,
5, 6...First disc, 7, 8, 9, 10... Second disc, 11, 12, 13, 14... Rotating shaft,
15... Leak prevention plate, 16... Scraping board, 17
...Outlet, 18...Solid discharge part, 19,2
0, 21, 22, 23, 24, 25, 26...Bearing, 27, 28, 29, 30, 31, 3
2, 33, 34...Sleeve, 35, 36, 3
7, 38, 39, 40, 41, 42... Natsu,
43, 44, 45, 46...Coupling, 4
7, 48, 49, 50...Motor, 51, 52,
53, 54...Permanent magnet, 55, 56, 57, 5
8,59,60...Electromagnet.

Claims (1)

[Scope of Claims] 1. A thin-plate rotary filter device characterized by being constructed from the following components (a) to (f). (a) A casing having an inlet for the liquid to be treated and an outlet for the solids-separated treated liquid. (b) A plurality of rotary shafts rotatably mounted and arranged in parallel so as to be located within the above-mentioned housing. (c) A plurality of large-diameter rotary plates and small-diameter rotary plates arranged alternately on the plurality of rotating shafts mentioned above, which are attached to adjacent rotating shafts, are arranged in opposite directions, and the small-diameter rotary plates The plurality of large-diameter rotary plates and small-diameter rotary plates are arranged so that the large-diameter rotary plates and the large-diameter rotary plates rotate at one point on their circumferences, and the large-diameter rotary plates contact each other on their sides. . (d) A permanent magnet or electromagnet for magnetizing the plurality of rotating plates. (e) A motor for rotating the plurality of rotating shafts mentioned above. (f) A solid matter discharge section provided within or outside the above-mentioned housing. 2. The thin plate rotary filter device according to claim 1, wherein each of the large and small diameter rotating plates is a disk fixed to the rotating shaft.