JPS6221284Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a waste oil filtration device that filters waste oil discharged from cutting, sawing, rolling, etc.

For cutting, sawing, rolling, etc.
A large amount of anti-friction oil is discharged as waste oil, but since waste oil contains a large amount of metal mist (fine metal debris) and cannot be reused, most of it is thrown away and is extremely wasteful. It was the economy.

This invention was proposed to solve the above-mentioned conventional problems, and provides a waste oil filtration device that has an extremely simple structure and can filter waste oil that is discharged in large quantities so that it can be reused. .

Hereinafter, this invention will be explained with reference to an illustrative embodiment. A waste oil filtration device 1 includes a filtration tank 3 consisting of a plurality of unit filtration tanks 2, . . . stacked vertically.
and an oil reservoir tank 4 provided below the filter tank 3. Among the unit filtration tanks 2,...
The unit filtration tank 2 in the middle part has a tapered upper surface with a downward slope toward the center, and a dish-shaped partition plate 6, with a through hole 5 formed in the center, is placed inside the inner tank 7. They are installed at appropriate intervals in the vertical direction, and fine powder 8 such as sawdust is filled between the upper and lower partition plates 6, 6. Partition plate 6,
... are attached with their peripheral edges hooked to hooking ribs 9, 9 formed on the inner wall of the inner tank 7. The uppermost unit filtration tank 2 among the unit filtration tanks 2, ... has a bottom tapered downwardly toward the center, and has a unit tank 10 formed with a through hole 5 in the center as an inner tank. Attach to the upper end of 7,
It is constructed by filling it with fine powder 8 such as sawdust. Further, a filter 11 made of a wire mesh or the like is attached to the uppermost unit filtration tank 2. Among the unit filtration tanks 2, ..., the lowest unit filtration tank 2 is formed in a tapered shape with a downward slope from the bottom of the inner tank 7 toward the center, and has a through hole 5 formed in the center thereof, and The bottom of the inner tank 7 is filled with fine powder 8 such as sawdust.
Magnetic powder such as magnetic iron powder is mixed into the fine powder 8, and when the waste oil passes through each unit filtration tank 2, the metal mist in the waste oil adheres to the magnetic powder and collects as much metal as possible. Mist is now being removed. Note that the fine powder 8 may be only magnetic powder.

A diffusion plate 1 is placed in the fine powder 8 of each unit filtration tank 2,...
2 are attached so that the waste oil passing through each unit filtration tank 2, . . . hits the diffusion plate 12 and is spread throughout the fine powder 8. A magnet 13 having the same function as magnetic powder is fixed to the lower surface of the diffusion plate 12. Note that if the diffusion plate 12 is formed of a magnetic plate, the magnet 13 is not necessary. The filtration tank 3 configured in this manner is installed inside the outer tank 14, and the bottom of the outer tank 14 serves as the oil reservoir tank 4. Reference numeral 15 is an on-off valve, and reference numeral 16 is an oil gauge. The fine powder 8 is replaced as soon as it becomes dirty, and is replaced approximately every 6 to 12 months.

Figure 2 shows another embodiment of this invention.
Each unit filtration tank 2, . . . is constructed by filling a unit tank 10 with a fine powder 8, the bottom of which is formed in a tapered shape with a downward slope toward the center and a through hole 5 formed in the center thereof. , the unit filtration tanks 2, . . . are stacked vertically to form a filtration tank 3. According to this embodiment, the filtration rate of oil can be increased by stacking unit filtration tanks 2, .

This invention consists of the above-mentioned structure, and the following effects can be expected.

The oil filtered in the upper unit filtration tank is quickly collected in the center along the downward slope of the bottom plate and flows down to the lower filtration tank.The oil that drained in the lower filtration tank is dispersed evenly within the tank by a diffusion plate, and magnetic powder is dispersed. This allows all iron powder in waste oil to be filtered out.

Although it has a simple structure, it is able to filter waste oil into oil of extremely high purity, and as a result, it is possible to reuse a large amount of waste oil that was conventionally discarded, resulting in significant resource savings.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a waste oil filtering device, and FIG. 2 is a longitudinal cross-sectional view of the waste oil filtering device, showing a modification of this invention. 1...Waste oil filtration device, 2...Unit filtration tank, 3...
...Filtering tank, 4...Oil storage tank, 5...Through hole, 6...Partition plate, 7...Inner tank, 8...Fine powder, 9...
Latching rib, 10...Unit tank, 11...Filter, 12...Diffusion plate, 13...Magnet, 14...Outer tank, 15...Opening/closing valve, 16...Oil level gauge.

Claims (1)

[Scope of utility model registration request] A unit tank whose bottom part is tapered downward toward the center and has a through hole in the center is filled with fine powder mixed with magnetic iron powder, and the fine powder is A waste oil filtration device comprising a filtration tank configured by stacking unit filtration tanks vertically, each having a diffusion plate attached therein, and an oil reservoir provided at the bottom of the filtration tank.