JPH09173712A - Filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the filtration effect and shorten working time by packing inorg. filter granular materials into an outside box so as to pack the materials to the circumferences of perforated inorg. pipes installed on the bottom of this box and installing a suction pump device for sucking out the filtered liquid stored in these perforated inorg. pipes on the outer side of the outside box. SOLUTION: When the liquid 2 for flirtation, such as oils, used for machining, etc., contg. impurity materials, is poured into the outside box 1, the liquid 2 for filtration leaves the contained impurities larger than the meshes of the auxiliary net box on the auxiliary cartridge of the uppermost stage and the liquid 2 for filtration contg. the other fine impurities successively penetrates the inside of the auxiliary cartridge. The impurities are successively adhered on the surfaces of the auxiliary inorg. filter granular materials 10 while the liquid passes the intergranular spacings of the granular materials 10 until finally the liquid is purified and restored to the required purity at the time of passing the walls of the perforated inorg. pipes 4 and is stored in the perforated pipes 4. The filtered liquid 14 stored in the perforated pipes 4 is thereafter gathered by the suction pump 13 into a liquid collecting tank 6 and is reused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to oils used on a processed surface for the purpose of lubrication and cooling when cutting and grinding or rolling metal or the like, and is mixed in the oil after use. This is an apparatus for removing fine metal powder generated during processing as described above and foreign matter mixed in for other reasons, cleaning the same, and reusing it.

[0002]

2. Description of the Related Art Hitherto, a filter applied as a device of this type has used a filter having a naturally occurring fiber such as a plant or a fiber made of a synthetic resin as a forming member.

[0003]

As described in the prior art, when a filter made of a fibrous material is used, if it is used for a long period of time, the fine gaps between the fibers are There was a risk that foreign matter that could not be penetrated remained and accumulated, a clogging phenomenon occurred, its function deteriorated and stopped.

In order to prevent the occurrence of such a danger,
It was necessary to periodically replace the filter with a new one.

Further, since the replaced filter is difficult to be completely restored even if it is subjected to a regeneration treatment such as washing, there is an inconvenience that it must be disposed of.

The present invention has been made to solve the above problems of the prior art. The object of the present invention is that it can be used repeatedly and permanently without using an organic fiber as a filter. Moreover, the recovered oils can be easily reused.

[0007]

In order to achieve the above object, the filter according to the present invention comprises a sand particle or a carbon particle, the particle size of which is adjusted so that oils to be filtered can permeate and drip. Inorganic filter particles such as ceramic particles are packed in a mesh box made of metal, punching metal, synthetic resin, etc. so that they can be easily taken out from the outer box when it becomes necessary to perform regeneration processing or particle size change processing. With a cartridge type with a single particle size range, multiple boxes with different particle size ranges were stacked and stacked, and an inorganic porous tube such as a liquid-permeable ceramic was placed in the lowest cartridge. This is connected to a suction pump provided outside the outer box using a pipe joint or the like.

[0008] The uppermost cartridge is packed with the inorganic filter granules having the finest particle size range among the other cartridges used, and the lower the cartridge, the slightly lower than the upper cartridge. Use a coarse particle size range.

In the lowermost cartridge, an inorganic porous tube such as a liquid permeable ceramic is installed as described above.

The stacking order of the cartridge does not basically change, but the particle size range of the filter medium to be used is subdivided, that is, according to the filtration accuracy required for the liquid to be filtered such as regenerated oil. The number of cartridges may be increased, or the pore size of the inorganic porous tube may be changed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described with reference to the drawings. FIG. 1 shows a cross section of the filter, and FIG. 2 shows a vertical section thereof. In these figures, the liquid to be filtered 2 is injected into the outer box 1 of the filter. The cartridge 3 provided on the bottom of the outer box 1 has an inorganic porous tube 4 such as a liquid-permeable ceramic fixed therein, one of which is closed, and the other is connected to a liquid collection tank 6 by a small-diameter tube 5. Connected.
The outer periphery of the inorganic porous tube 4 is filled with coarse-grained inorganic filtration granules 7 such as sand grains, carbon grains, ceramic grains or the like whose grain size is adjusted, and the outer periphery of the cartridge 3 is the grains of the packed inorganic filtration granules 7. It was surrounded by a mesh box 8 made of metal, punching metal, synthetic resin, or the like having an opening slightly smaller than the outer diameter so that the inorganic filter granules 7 therein would not leak from the cartridge 3 to the outside. FIG. 4 shows its appearance.

In order to have the function as the cartridge 3, the cartridge 3A filled with the inorganic filter material 7 may be arranged around the inorganic porous tube 4 as shown in FIG.

Instead of the cartridge 3A, as shown in FIG. 3, the inorganic porous granular material 7 may be directly spread around the inorganic porous tube 4.

The sub-cartridge 9 provided on the cartridge 3 is filled with the sub-inorganic filtration granules 10 finer than the inorganic filtration granules 7 packed in the cartridge 3, and like the cartridge 3. In order to prevent the sub-inorganic filtration granular material 10 in the sub-cartridge 9 from leaking out, a sub-net box 11 made of metal, punching metal, synthetic resin or the like is used to form the outer peripheral portion thereof. It is the appearance.

As described above, one of the inorganic porous tubes 4 is closed, and the other is connected to the liquid collecting tank 6 by the small diameter tube 5 and also connected to the suction pump 13 via the pipe 12.

The filter of the present invention is constructed as described above, and operates with the following functions.

A liquid to be filtered 2 containing impurities is put in an outer box 1
When the liquid to be filtered 2 is injected into the outer box 1 from above, the mixed liquid 2 remains on the uppermost sub-cartridge 9 with a larger amount of mixed impurities than the mesh of the sub-mesh box 11, and other fine mixed impurities. The liquid to be filtered 2 containing the quality permeates into the sub-cartridge 9 through the net of the sub-mesh box 11 and passes through the interstices of the packed sub-inorganic filtration granules 10 while flowing down and comes into contact with each other along the path. The impurities are attached and left on the surface of the sub-inorganic filtration granular material 10.

The process moves from the arrow A to the arrow B in FIG. 1, and the purity thereof is successively improved during that time, and finally passes through the wall of the inorganic porous tube 4 to be purified and recovered to the required purity. It accumulates inside the inorganic porous tube 4.

The inorganic porous tube 4 purified as described above
The filtered liquid 14 accumulated inside is sucked by the suction pump 13.
It is collected in the liquid collection tank 6 through the small-diameter pipe 5 and used for reuse.

The filter of the present invention fulfills the filtering function by the above-mentioned action, but when used for a long period of time, impurities which could not permeate into the respective sub-cartridge 9 and cartridge 3 or cartridge 3A. The quality remains and the filtration function is significantly impaired. In such a situation, each sub-cartridge 9 and cartridge 3
Alternatively, if the cartridge 3A is taken out of the vessel, washed with water or another solvent, and dried, it can be restored to its original state and can be reused.

[0021]

Since the present invention has the above-mentioned structure and function, it has the following effects.

By the cartridges 3 and 3A or the auxiliary cartridge 9 in the second, third and fourth aspects, it becomes possible to easily filter and remove the impurities mixed in the liquid to be filtered 2.

By selecting the materials of the inorganic filter granules 7 and the auxiliary inorganic filter granules 10 used for the cartridges 3 and 3A or the auxiliary cartridge 9 in the second, third and fourth aspects, the material to be filtered is selected. Since the offensive odor generated from the liquid 2 can be controlled, the working environment can be improved.

By making the cartridges 3 and 3A or the sub-cartridge 9 of claim 2, claim 3 and claim 4 detachable, the impurities accumulated in the cartridges can be easily washed and removed. It is possible to recycle and use.

Therefore, the amount of waste generated is greatly reduced, which can greatly contribute to the environment.

By operating the suction pump 13 according to the first aspect, the filtering action can be accelerated and the working time can be shortened.

[Brief description of the drawings]

FIG. 1 is a cross section of a filter.

FIG. 2 is a vertical cross section of a filter.

FIG. 3 is another longitudinal section of the filter.

FIG. 4 is an appearance of a cartridge installed at the bottom of the filter.

FIG. 5 is an external view of another cartridge installed at the bottom of the filter.

FIG. 6 is an appearance of a sub-cartridge installed on the uppermost stage of the filter.

[Explanation of symbols]

 1 Outer box 2 Liquid to be filtered 3, 3A Cartridge 4 Inorganic porous tube 5 Small diameter tube 6 Collection tank 7 Inorganic filtration granules 8, 8A Mesh box 9 Sub-cartridge 10 Sub-inorganic filtration granules 11 Sub-net box 12 Pipe 13 Suction pump 14 Filtered liquid

Claims (4)

[Claims] 1. An outer box (1) into which a liquid to be filtered (2) such as a cooling liquid used for cutting or grinding is injected, and an inorganic porous tube detachably installed at the bottom of the outer box (1). (4) and the inorganic perforated tube (4) are packed in the outer box (1) so as to be packed around the inorganic perforated tube (4), and the inorganic filter granules (7) are installed outside the outer box (1). And a suction pump device (12, 13) adapted to suck out the filtered liquid (14) accumulated in the inorganic porous tube (4). 2. A cartridge (3) formed by enclosing an inorganic filter material (7) around a perforated inorganic pipe (4) in a mesh box (8A) made of metal or synthetic resin.
The filter according to claim 1, wherein the filter is arranged so as to be surrounded by A). 3. A cartridge (3) is formed by wrapping an inorganic porous tube (4) and an inorganic filter granule (7) in a mesh box (8) made of metal or synthetic resin to form a cartridge (3). The filter according to claim 1, wherein the cartridge (3) is detachably installed on the bottom of the outer box (1). 4. A sub-cartridge (9) formed by enclosing a sub-inorganic filtration granular material (10), which is thinner than the above-mentioned inorganic filtration granular material (7), is removably laminated and added. The filter according to claim 1, claim 2 or claim 3.