JPH038802B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a filtration system for filtering cutting fluid containing metal particles called chips discharged during metal cutting work. It is related to the device.

PRIOR TECHNOLOGY There are various types of devices for filtering the cutting oil mentioned above, and one type of device uses a filter drum with a filter stretched around its circumference that rotates in a tank. , put cutting oil inside the filtration drum, separate the thrown cutting oil into chips and oil in the filtration drum, collect the separated chips inside the filtration drum, There is a method in which the collected chips are carried outside the filter drum, and the oil is filtered and drained into the tank.

However, the above type of filtration device had the following drawbacks.

First, in the above-mentioned type of filter device, the cutting oil is charged into a filter drum, and the weight of the cutting oil charged into the filter drum is also large. Therefore, special consideration had to be given to the mechanism for pivoting the filter drum. In addition, special consideration had to be taken to prevent damage to the filters attached to the periphery of the filtration drum due to chips.

Furthermore, special consideration had to be given to the means for collecting the chips separated from the cutting oil inside the filter drum and the means for transporting the collected chips out of the filter drum.

Problems to be Solved by the Invention The present invention is a filtration device according to the invention of Japanese Patent Application No. 201154 of 1982, which has a configuration particularly suitable for collecting magnetic material chips. That is, the present invention aims to change the concept of the conventional type of device described above,
This allows the filter drum to rotate easily without putting any load on the bearing that attaches the filter drum, and also prevents damage to the filter of the filter drum and prevents clogging. This allows for easy separation and removal of separated chips.

Means for solving the problem A filtration drum is constructed by arranging plates that suspend an endless band on both sides, wrapping a filter around the body, and fixing a round rod rotating shaft on one side and an annular rotating shaft on the other. , a cutting machine consisting of a solid material conveying plate having a cutting oil inlet, the bottom surface having a circular arc shape in cross section, one side of which is extended as an inclined upright plate, and the end thereof is a solid material dumping part. The round rod-shaped rotation shaft of the filtration drum is rotated by a round rod-shaped rotation bearing provided on one side plate of the oil injection tank, and the annular rotation shaft of the filtration drum is rotated by an annular rotation bearing provided on the other side plate. An annular opening is formed by the annular rotating shaft of the filtration drum and an annular rotating bearing of a cutting oil input tank that is freely supported, and a receiving tank is provided on the side of the annular opening on the side plate side. At the same time, on both sides of the cutting oil input tank, above the filtration drum that is mounted on the shaft in the above state,
In addition, in the part of the solid material transport plate near the solid material dumping section,
The wheel is rotatably mounted on a shaft, and between the wheel and the plate of the filtration drum, an endless band in which a plurality of scraping plates are arranged in parallel at intervals with mounting pieces is rotatably suspended and driven. The wheel or filtration drum receives driving force from a source and rotates it.
In the filtration device of the type described above, the rotation is transmitted to the endless band and the scraping plate attached to the endless band slides and rotates on the bottom surface of the cutting oil input tank and the surface of the solid material conveying plate. A magnet is arranged from the bottom of the cutting oil input tank to the back of the solid material conveying plate toward the solid material dumping section.

Embodiment The cutting oil input tank 1 has a cutting oil input part 1A.
The bottom surface 1B of the cutting oil input tank has an arc-shaped cross section similar to the circumference of the filtration drum 2, and the bottom plate in the rotational direction of the filtration drum 2 is stretched between the filtration drum and the wheel, which will be explained later. In order to function as a conveying plate 1C for deposits such as chips that have settled on the bottom surface in conjunction with the sliding movement of the scraping plate attached to the chain, the plate is tilted from one end of the bottom surface 1B. It is formed as a raised plate, and the discarded material 1D of transported sediment is formed at the tip.

A magnet 20 is arranged on the back surface of the bottom surface and the back surface of the conveying plate.

The cutting oil input tank 1 has a bottom surface 1B and a conveyor plate 1.
The filtration drum 2 is rotatably mounted on a shaft on the surface C, with the circumferential surface of the filtration drum 2 facing each other.

The above-mentioned filtration drum 2 has plates 2B and 2 on both sides of the body, each of which has a chain stopper (not shown).
B is arranged, and side plates 2C and 2E are arranged on the outside of both plates 2B and 2B, respectively, and the plate 2
A filter 2G is stretched across the circumference between B and 2E.

A rod-shaped rotating shaft 2D is disposed at the center of one side plate 2C of the filtration drum 2. The other side plate 2E is provided with a circular cutout having a diameter smaller than that of the side plate 2E, and the annular rotating shaft 2F is fitted into the cutout.

Further, the filtration drum 2 has the rotating shafts 2D, 2
F, the body is lifted from the bottom surface 1B of the cutting oil input tank 1, and the side plate 1 of the cutting oil input tank 1 is lifted up.
It is pivoted on X.

The shaft mounting means connects the rod-shaped rotating shaft 2D of the filtration drum 2 to a bearing 3A provided on one side plate 1X of the cutting oil charging tank 1, and connects the annular rotating shaft 2F to the other side plate 1X of the cutting oil charging tank 1. The shaft is supported by an annular bearing 3B provided on the side plate 1X. Therefore, the side plate on the annular bearing 3B side of the filtration drum annular rotating shaft 2F and the cutting oil input tank 1 supporting the filter drum annular rotating shaft 2F has an open portion 10 formed therein.

4 in the figure indicates that oil filtered from the side plate 2E of the filter drum 2 enters the cutting oil input tank 1, or conversely, cutting oil input to the cutting oil input tank 1 is filtered from the side plate 2E. This is a gasket that prevents water from entering the drum 2.

Above the filtration drum 2 and on the side of the solid material conveying plate 1C that is biased toward the dumped material 1D, a chain drive wheel 6 is rotatably mounted by a conventional means parallel to the filtration drum 2 and the central axis. Bearings that are mounted on the shaft are provided on the side plates 1X, 1X of the cutting oil injection tank 1, and a chain drive wheel 6 is mounted on the bearings.

In this embodiment, the rotating means for the filtration drum is provided with a motor 6 as a drive source so as to forcibly drive the chain drive wheel 5, and this rotation is transmitted to the filtration drum 2 through a chain 7. Although the filtration drum 2 is illustrated as rotating, the filtration drum 2 may be directly driven by known means.

Chain drive wheel 5 and filter drum 2
A scraping plate 7A is attached to the mounting piece 7 between the plates 2B and 2B, which are provided with a stopper (not shown).
Stretch the parallel chains 7 attached with B. Of course, this tensioning is done by chain 7 arranged in parallel.
The scraping plate 7A attached to the cutting oil input tank 1 is stretched so as to slide on the bottom surface 1B of the cutting oil input tank 1 and the surface of the solid material conveying plate 1C. In the illustrated embodiment, the scraping plates are arranged in parallel chains, but it goes without saying that belts may be used instead. Therefore, in the present invention, this is referred to as an endless band.

Reference numeral 8 in the figure denotes a chip collection box, and a receiving tank 9 for oil filtered by the filter drum 2 is disposed outside the opening 10 formed on the side plate of the cutting oil input tank 1. Although not shown in the drawings, this receiving tank 9 is designed to discharge filtered oil when receiving the oil.

In addition, the above-mentioned open part 10 does not provide one side plate 2E of the filtration drum 2, but directly attaches the annular rotating shaft 2F to one plate 2B, and connects the side plate 1X of the cutting oil input tank 1.
The annular bearing 3B disposed in the cutting oil tank 1 may be designed to have an opening larger than the opening 10 of the type shown in the embodiment on the side plate of the cutting oil input tank 1.

Next, the functions of the device having the above configuration will be explained.

Cutting oil containing metal pieces called chips discharged during metal cutting work is made to flow into a cutting oil input tank 1 from a cutting oil input port 1A.

At this time, the chain drive wheel 6 is connected to the motor 5.
Rotate it by rotating it.

The cutting oil input tank 1 includes a filtration drum 2 having the above configuration.
The filter 2G part stretched around the body is immersed in the cutting oil and rotates. In the illustrated embodiment, the rotational force of the chain drive wheel 6 is transferred to the chain 7 by rotating the chain 7, which has a scraping plate 7A stretched between the chain drive wheel 6 and the plates 2B and 2B of the filtration drum. The configuration in which the filtration drum 2 rotates in response to the transmission is illustrated.

In the filtration device having the above configuration, the cutting oil inputted into the cutting oil input tank 1 from the cutting oil input part 1A is filtered by separating the chips in the cutting oil by the filter 2G of the filter drum 2 and filtering it as filtered oil. It penetrates into the filtration drum 2. The filtered oil that has entered the filtration drum 2 is filtered from the opening 10 formed on the side plate of the cutting oil input tank by the annular rotating shaft of the filtration drum 2 and the annular bearing in the direction of the arrow. leak. The filtered oil that has flowed into the receiving tank 9 is discharged from the receiving tank 9 by a pump or the like. On the other hand, the chips contained in the cutting oil are separated and deposited on the bottom surface 1B of the cutting oil input tank 1. At this time, in particular, since the magnet 20 is arranged on the back of the bottom surface, the magnetic chips are attracted to the bottom surface and deposited on the bottom surface, and the chips are prevented from floating in the cutting oil input tank. This phenomenon also occurs.

Since the scraping plate 7A slides from the bottom of the cutting oil input tank 1 to the solid material conveying plate by the chain as described above, the scraping plate 7A collects the chips settled on the bottom 1B by the magnet 20. In response to the force, the solid material is efficiently scraped up, scraped up the surface of the solid material conveying plate 1C, and conveyed to the dumping section 1D at the upper end of the solid matter conveying plate 1C,
This is dumped from the dumping section 1D. Since a magnet is also arranged on the back surface of the solid material conveying plate 1C toward the dumping section 1D, the chips can be blown onto the surface of the solid material conveying plate even during transportation, and the solid material can be reliably conveyed to the dumping section 1D. For example, a chip collection box 8 is disposed below the dumping section 1D, and the dumped chips are collected in this box.

Further, since the filter drum 2 is rotating, there is little fear that the filter of the filter drum 2 will be clogged with chips. However, since not everyone is concerned about this, it is also possible to expose the injection nozzle 11 from the opening 10 and spray air or liquid from inside the filter to eliminate clogging of the filter. Due to this spraying, the magnetic material chips that are blown away from the filter of the filtration drum and scattered on the solid material conveying plate are also transferred to the magnet 2 on the outside of the conveying plate.
0 is arranged, so that chips scattered on the conveyor plate can also be captured.

Effects Since the present invention is configured and functions as described above, it is possible to prevent filter damage and clogging caused by the injection of cutting oil into the filtration drum in a conventional type of device using a filtration drum. It is no longer necessary to pay attention to prevention, collection of chips in the filtration drum, and mechanism for removing chips from the filtration drum. There is no need to consider the load, and on the contrary,
By injecting cutting oil into the cutting oil input tank, the filtration drum is theoretically floated, which reduces the load on the bearing that receives the rotating shaft of the filtration drum, and as a result, the filtration Not only can the drum be rotated lightly by the gravity and tension applied to the filtration drum of the chain, but it also efficiently captures magnetic material chips at the bottom of the cutting oil input tank and dumps them onto the solid material conveying plate. It can be transported reliably to the department.

As can be seen from the above description, it overcomes all the drawbacks of the prior art types of devices.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the present invention, and FIG. 2 is a sectional view taken along the line A-A in FIG.
A and 3B are bearings, 5 is a wheel, 6 is a motor that is a rotational drive source for the wheel, 7 is an endless band such as a chain, 9 is a receiving tank arranged on the side where the opening 10 of the cutting oil inlet tank is formed, and 20 is a receiving tank. These magnets are placed on the bottom of the cutting oil input tank and on the back of the solid material transfer plate.

Claims (1)

[Claims] 1 A filtration drum consisting of a plate that suspends an endless belt on both sides, a filter wrapped around the body, a round bar rotating shaft fixed to one side and an annular rotating shaft fixed to the other, and a cutting oil inlet. both sides of a cutting oil input tank, which has a bottom surface shaped like a circular arc in cross section, one side of which is extended as an inclined upright plate, and the extended end is a solid material conveying plate with a solid material dumping section. The round rod-shaped rotation shaft of the filtration drum is rotatably mounted on a round rod-shaped rotation bearing provided on one side plate of the plate, and the annular rotation shaft of the filtration drum is rotatably mounted on an annular rotation bearing provided on the other side plate. , an annular opening is formed by the annular rotating shaft of the filter drum and an annular rotating bearing of a cutting oil input tank that supports the filter drum, and a receiving tank is disposed on the annular opening side of the side plate, and the cutting A wheel is rotatably mounted above the filtration drum, which is mounted on both sides of the oil charging tank, above the filtration drum, which is mounted on the shaft in the above state, and near the solid material dumping section of the solid material transport plate, and the plate of the wheel and the filtration drum is mounted. Between them, a plurality of scraping plates are arranged in parallel with each other at intervals, and an endless band is rotatably suspended, and the driving force from a driving source is applied to a wheel or a filter drum. In a type of filtration device configured such that the rotation is transmitted to the endless band, and the scraping plate attached to the endless band slides and rotates on the bottom surface of the cutting oil input tank and the surface of the solid material conveying plate. . A filtration device, characterized in that a magnet is arranged from the bottom of the cutting oil input tank to the back of the solids conveying plate toward the solids dumping section.