JPH09183037A - Floating oil separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove adhered steep powder during the rotation to prevent it from being accumulated by providing a belt-adhered matter scraping means, a belt-adhered matter exhausting means, and a magnet pulley-adhered matter scraping means. SOLUTION: A magnet pulley 4 is driven by a motor, and rotated while sucking a steel belt 3. Also its rotating surface is scraped with a knife 6 so as to always remove attracted steel powder. Then scraped oil content is exhausted to the outside of a device through a duct 1. In addition, mainly the steel powder adhered to the outside of the magnet pulley 4 is scraped with a knife 8, and the steel powder scraped with the knife 8 is exhausted to the outside of the device through a duct 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention floats on chips (iron powder, aluminum powder, grinding stone powder, etc.) and coolant mixed in by cutting, polishing, etc. during metal processing by machine tools and the like. The present invention relates to a floating oil separation device for removing oil components from a used cooling liquid (coolant liquid).

[0002]

2. Description of the Related Art Conventionally, in order to remove chips (chips and chips produced by processing) and oil floating on the coolant that have been mixed in the used coolant collected in a coolant tank, it is necessary to remove the chips. The oil removal was generally performed in a separate device. The method of removing these in a separate process requires a wasteful space and operating costs, so the installation location is smaller, and there is a method and apparatus for simultaneously removing chips and oil without pumping up the coolant. It is proposed in JP-A-7-136894. In this method and apparatus, the magnet holder is circulated in a used coolant liquid collected in a coolant tank to collect and remove chips and oil at the same time.

[0003]

The conventional method of removing chips and oil components in separate steps requires a lot of space and a large operating cost. On the other hand, although the proposed chip and the one that recovers and removes oil at the same time are much improved as compared with the conventional ones, the device is still complicated, and it is improved in terms of downsizing, easy operation, and manufacturing cost. There is plenty of room. For example, the structure is such that sprockets are placed inside and outside the coolant, and magnet holders are dispersed and attached to a roller chain that can be rotated by the sprockets or a belt attached to the roller chain. The powder is adsorbed, the sprocket is driven by a motor, the magnet holder is pulled up from the coolant, and the oil on the surface and the chip are scraped and removed at the same time.

However, if a suitable steel material is used for the rotating belt, the steel will adhere oil well. Therefore, the oil and chips floating on the surface of the coolant can be adhered to the belt surface only with the belt. There is a fact that they can be pulled up at the same time. Therefore, if a sufficiently miniaturized magnet pulley is used as a method for driving the steel belt, the structure of the entire apparatus can be significantly simplified and miniaturized as compared with the conventional one. However, in the conventional magnet pulley, the outer peripheral portion has irregularities, and the recess is just a portion for adsorbing the steel belt. Therefore, the iron powder easily collects in the recess during use.

When iron is accumulated in the portion of the outer peripheral portion for adsorbing the steel belt, iron powder closes the external magnetic path of the magnet for adsorbing the belt, weakening the belt adsorbing force and finally causing the magnet pulley to run idle. There is a point. FIG.
It is the front view which showed an example of the conventional magnet pulley with some steel belts. FIG. 5 is a cross-sectional view (right side view) of the conventional magnet pulley 30 of FIG. 4 taken along line P-P in the drawing. FIG. 6 is a sectional view (front view) in which a part of the magnet pulley 30 of FIG. 5 is cut along QQ in the drawing and enlarged. In addition, S and N shown in the drawing of FIG. 6 represent the polarities of magnetism at the positions.

As shown in FIGS. 4 to 6, the belt suction unit 3
31 are supported by a pair of nonmagnetic discs 32, 32 facing each other in the front-rear direction. Each belt attracting portion 31 includes a pair of opposing magnetic plates 35 and 35.
The magnet 34 is sandwiched between and fixed to the frame 36. Since the magnet 34 has a structure retracted inward from the belt contact surface of the pair of magnetic plates 35, the recess 3
In 7, iron powder is easy to collect. And that amount is sufficient to immediately close most of the external magnetic path of the magnet 34. Moreover, such iron powder cannot be easily removed during rotation. An object of the present invention is to solve such a problem and adopt a combination of a magnet pulley and a steel belt which has no depression on the outer peripheral surface and which is improved by removing the adhered iron powder during rotation so as not to easily accumulate. By doing so, it is possible to provide a floating oil separation device that has a simple structure and can be easily downsized.

[0007]

In order to solve the above-mentioned problems, the floating oil separating apparatus of the present invention is soaked in a motor for driving the apparatus and a lower part thereof in an oil / water mixed solution containing metal powder to be separated. While being continuously rotated, a belt made of an endless belt-like magnetic material, a magnet pulley driven by the motor to rotate the belt by an outer circumference contacting the belt and magnetic attraction force, and a surface of the running belt contacting the belt. Belt adhering material scraping means for scraping off surface adhering material of the belt pulled up from the oil-water mixture, and belt adhering material discharging means for discharging the adhering material scraped by the belt adhering material scraping means to the outside of the apparatus, A magnet pulley adhering material scraping device is provided which is close to the outer peripheral surface of the rotating magnet pulley and scrapes off the adhering material on the outer peripheral surface.

Further, the belt is supported only by the magnetic pulley on the upper part and is completely free on the lower part, or is only hung on the free riding pulley, and is not supported on any part of the structure supporting the device and is free. It can also be configured to be in a normal state. The magnet pulley is composed of a plurality of plate-shaped magnetic bodies, a plurality of magnets, and a plurality of non-magnetic bodies, the outer end of the plate-shaped magnetic body reaches the outer peripheral surface, and the plate-shaped magnetic body and the plate-shaped magnetic body are formed. By arranging the non-magnetic material on the outer side between the magnets and the magnet on the inner side of the non-magnetic material, the outer end portions of the plate-shaped magnetic material and the outer surface of the non-magnetic material are alternately arranged so that the outer peripheral surface of the magnet pulley is Further, the plate-shaped magnetic body forming the magnet pulley may be a hollow disk shape having concentric holes, and the magnet and the non-magnetic body may be a donut shape having a square cross section. The magnet pulley has a plurality of rod-shaped magnets whose longitudinal direction is parallel to the rotation axis embedded along the outer peripheral surface of a cylindrical non-magnetic body, and has a flat outer peripheral surface with a magnet end surface and a non-magnetic body end surface. It may be arranged alternately.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described.
A detailed description will be given with reference to the drawings. FIG. 1 is a front view showing an embodiment of the present invention in which a part of a frame 10 which also serves as a cover is cut away so that an outline of the internal structure can be seen. FIG. 2 is a right side view showing a main part of the embodiment of FIG. 1, particularly a magnet pulley 4 and a free riding pulley 5 in cross section. In addition, S and N shown in the drawing of FIG. 2 represent the polarities of magnetism at the positions.

In FIGS. 1 and 2, 1 is a coolant liquid in which a floating oil 2 to be separated is suspended along an upper layer. The floating oil 2 contains iron powder, aluminum powder, grindstone powder, etc. in addition to oil. 3 is an endless belt-shaped steel belt having a thickness of 0.1 to 0.15 m in this embodiment.
A ferritic stainless steel having a width of m and a width of about 50 mm was used. Such a steel belt has a property that oil components (including iron powder, aluminum powder, grinding stone powder, etc.) floating on the coolant are well adhered, and moisture is not adhered.

The magnet pulley 4 is a center shaft 1.
3, a magnetic material made of a material such as a donut-shaped magnet having a rectangular cross section (hereinafter referred to as a disk-shaped magnet) 14, a disk-shaped iron with a hole for allowing the center shaft 13 to penetrate therethrough in the center (hereinafter referred to as magnetism). In addition to a non-magnetic material (hereinafter referred to as a non-magnetic disk) 16 made of a plastic, aluminum or the like having a donut shape with a rectangular cross section 15, a set plate 17, a fixing screw 18, and the like. Assemble the magnetic disk 1 from the back to the center shaft 13.
5, the disk-shaped magnet 14 in front of it, the non-magnetic disk 16 on the outside of the disk-shaped magnet 14, then the magnetic disk 15, and so on. Finally, insert the foremost magnetic disk 15 and set. It is pressed by the plate 17 and fixed by the fixing screw 18.

Since the structure of the magnet pulley 4 is simple in this way, it is suitable for downsizing, and the diameter of the upper pulley (magnet pulley 4) of this embodiment is 60 mm. The lower pulley (free riding pulley 5) put in the coolant liquid 1 is not fixed anywhere but is supported by the lower portion of the steel belt 3 to move freely, and rotates following the rotation of the steel belt 3. Therefore, only the upper magnet pulley 4 needs to be driven, and the free riding pulley 5 is used in the lower portion in the present embodiment, but the lower pulley is not particularly required, and the lower portion of the steel belt 3 on which nothing is worn is not used. You may just soak it in the coolant. In any case, the attachment and replacement of the belt (including the replacement for changing the length of the belt) are extremely easy because no tension is applied to the belt.

The magnet pulley 4 is driven by a motor 11 and is rotated in the direction of the arrow in FIG. 1 while attracting the steel belt 3, but there is a non-magnetic disc 16 outside the disc magnet 14. Since the outer surfaces of the magnetic disk 15 and the non-magnetic disk 16 are smoothly connected to each other, there is no dent and it is hard to collect even if iron powder is adsorbed, and its rotating surface is scratched with a knife-shaped object. By taking, the iron powder adsorbed constantly can be removed.

Numeral 6 is a knife for mainly scraping off oil on the front surface of the steel belt 3. 7 is a knife 6
This is a duct that discharges the oil, etc. Reference numeral 8 is a knife for mainly scraping off iron powder attached to the outer peripheral surface of the magnet pulley 4. Reference numeral 9 denotes a duct for discharging iron powder scraped off by the knife 6 out of the apparatus. Reference numeral 12 is a motor bracket for fixing the motor 11 to the frame 10 and includes the knives 6 and 7
Are supported by the motor bracket 12. The exhaust ducts 7 and 9 may be supported by the motor bracket 12 or may be fixed to the frame 10.

It should be noted that the magnet pulley used in this apparatus need only be one that does not collect a large amount of iron powder on its outer surface and can be easily scraped off even if it adheres. Therefore, in addition to the magnet pulley 4 of the embodiment shown in FIGS. 1 and 2, other magnet pulley configurations are possible. For example, a magnet pulley 20 shown in the perspective view of FIG. 3 has a plurality of rod-shaped magnets 22, 22 on an outer peripheral surface of a cylindrical body portion 21 made of a non-magnetic material such as plastic or aluminum.
... 22 is embedded. On the outer peripheral surface of the entire pulley, the body portion 21 and the outer surface of the magnet 22 are alternately arranged without unevenness and are finished smoothly. Therefore, the magnet pulley 20 has the same function as the magnet pulley 4 shown in FIGS.

Further, although the oil scraping of the embodiment shown in FIGS. 1 and 2 is carried out only on the front side of the steel belt, if the oil scraping is carried out on the back side of the belt before contacting the steel belt, the magnet pulley is further removed. The adhesion of iron powder to No. 4 is reduced. However, since some iron content remains inevitably, it is necessary to scrape the iron powder off the outer peripheral surface of the magnet pulley 4, which is rather undesirable because the device becomes complicated.

[0017]

As described in detail above, according to the present invention, in the floating oil separation device, a motor for driving the device,
A belt of an endless belt-shaped magnetic body that is continuously rotated while immersing the lower part in an oil-water mixed solution containing metal powder to be separated, and the outer periphery driven by the motor contacts the belt and the belt is attracted by a magnetic attraction force. A magnet pulley to be rotated, a belt adhering material scraping means for scraping surface adhering material of the belt brought into contact with the surface of the running belt and pulled up from the oil-water mixed solution, and scraped by the belt adhering material scraping means. By providing a belt adhering matter discharging means for ejecting adhering matter to the outside of the apparatus, and a magnet pulley adhering matter scraping means which is close to the outer peripheral surface of the rotating magnet pulley and scrapes off the adhering matter on the outer peripheral surface,
A combination of a magnet pulley and steel belt that has no recess on the outer peripheral surface to remove oil and iron and other foreign matter floating on the coolant, and removes adhered iron powder during rotation to prevent accumulation, By adopting, there is an effect that the structure is simple, the miniaturization is easy, and the cost is reduced.

Further, the belt is supported only by the magnetic pulley on the upper part and is completely free on the lower part, or only the free riding pulley is hung on the belt, and the belt is free from being supported by any part of the structure supporting the device. The configuration as described in 1 also has an advantage that operations such as attachment of the device and belt exchange including change of belt length are easy. Therefore, the use of the present embodiment has the effects of reducing the installation space, improving work efficiency, and reducing costs.

[Brief description of the drawings]

FIG. 1 is a front view (partially sectional view) showing an example of an embodiment of the present invention.

FIG. 2 is a right side view (partially sectional view) of the example embodiment of FIG.

FIG. 3 is a perspective view showing an example of a magnet pulley of another embodiment.

FIG. 4 is a front view showing an example of a conventional magnet pulley.

5 is a right side view (cross-sectional view) taken along the line P-P of the magnet pulley of FIG.

FIG. 6 is a front view (cross-sectional view) cut along QQ in FIG.

[Explanation of symbols]

 1 Coolant Liquid 2 Floating Oil 3 Steel Belt 4, 20, 30 Magnet Pulley 5 Free Riding Pulley 6 Oil Scraping Knife 7 Oil Suction Duct 8 Iron Powder Scraping Knife 9 Iron Powder Suction Duct 10 Cover / Frame 11 Motor 14 Disk-shaped Magnet 15 Magnetic disk 16 Non-magnetic disk 22 Rod-shaped magnet

Claims (5)

[Claims] 1. A motor for driving the apparatus, a belt of an endless belt-like magnetic body which is continuously rotated while dipping a lower portion in an oil / water mixed solution containing metal powder to be separated, and an outer periphery driven by the motor. A magnet pulley that comes into contact with the belt and rotates the belt by a magnetic attraction force; and a belt adhering material scraping device that comes into contact with the surface of the traveling belt and scrapes off the surface adhering material of the belt pulled up from the oil-water mixture. A belt adhering material ejecting means for ejecting the adhering material scraped by the belt adhering material scraping means to the outside of the apparatus; and a magnet pulley for adhering to the outer peripheral surface of the rotating magnet pulley for scraping the adhering material on the outer peripheral surface. A floating oil separation device, comprising: an adhering matter scraping means. 2. The belt is supported by a magnet pulley only on the upper part and is completely free on the lower part or is only hung on a free riding pulley, and is free from being supported by any part of the structure supporting the device. The floating oil separation device according to claim 1, which is configured as described in 1. 3. The magnet pulley comprises a plurality of plate-shaped magnetic bodies, a plurality of magnets and a plurality of non-magnetic bodies, the outer end portion of the plate-shaped magnetic body reaching the outer peripheral surface, and the plate-shaped magnetic body and the plate-shaped body. By arranging the non-magnetic material outside the space between the magnetic materials and the magnet inside the non-magnetic material, the outer ends of the plate-shaped magnetic material and the outer surface of the non-magnetic material are alternately arranged so that the outer circumference of the magnet pulley is The floating oil separation device according to claim 1, wherein a surface is formed. 4. The floating oil separation device according to claim 3, wherein the plate-shaped magnetic body forming the magnet pulley is a hollow disk-shaped body having concentric holes, and the magnet and the non-magnetic body are doughnut-shaped with a rectangular cross section. 5. The magnet pulley has a plurality of rod-shaped magnets whose longitudinal direction is parallel to the rotation axis embedded along the outer peripheral surface of a cylindrical non-magnetic body, and has a flat outer peripheral surface with a magnet end surface and a non-magnetic material. The body end surface is alternately arranged.
The floating oil separation device described in.