JPH07227507A - Filter - Google Patents

Abstract

PURPOSE:To provide a filter in which the driving force of a filter drum is reduced to prevent the drum from becoming in an excess load condition and which can be continuously operated. CONSTITUTION:This filter is the one for obtaining a purified cutting oil by filtering turnings from a cutting oil to be filtered in which the turnings and the cutting oil are mixed. The filter is provided with a purified cutting oil tank 1, a cutting oil storage tank for temporarily storing a cutting oil to be filtered fed through a feeding port 8, a seal member freely rotatably installed in a floating condition. Further, a filter drum 30 provided with a filter means 44 for filtration on the outer peripheral surface, side opening opened to at least one surface for causing the purified cutting oil after filtration to flow out to the purified cutting oil tank 1, a jetting means 45 for backwashing the filter means, and scoop-up means 10, 11, 12 arranged at prescribed intervals for continuously conveying the turnings from the upstream side to the downstream side of the feeding port to make them fall from a turnings discharge port 4 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtering device, and in particular, cutting oil which is used in metal cutting and is in a state containing cutting chips is separated into cutting chips and cutting oil and reused. It relates to a filter device that enables it.

[0002]

2. Description of the Related Art Conventionally, a cutting oil (hereinafter, referred to as purified cutting oil To tell)
There are many proposals for a filtration device for obtaining the above. Tokoku 2
The "filtering device" of Japanese Patent No. 445564 is an example of an improved device of such a filtering device, in which one end of the filtering drum is floated in cutting oil to reduce the load applied to the bearing of the filtering drum. For example, the filtration drum is lightly driven to rotate.

Further, according to the "filtering device" of Japanese Patent Application No. 1-31997, in a cutting oil containing cutting chips to be filtered (hereinafter referred to as "cutting oil to be filtered"), for example, during lathe processing. Floating chips that are suspended in a continuous spiral form and contain air to obtain buoyancy and float on the oil surface.
A device for settling in the cutting oil to be filtered has been proposed. According to this device, if the levitation chips are left as they are, the levitation chips will grow and expand more and more, and the risk of damaging the filter wound around the outer periphery of the filtration drum can be prevented. It is something to do.

The device and the above device will be described with reference to the drawings. FIG. 5 is a plan view showing a part of the filtering device, broken away except for a cover and the like. In the figure, in the filtering drum 300, the shaft 301 is supported by the left side plate 102, while the filtering drum 300 is supported by the right side plate 103.
Has a circular opening rotatably supported, and rotational force is applied from at least one of the left and right chains 10 and 11 meshing with a sprocket (not shown) provided on the outer peripheral surface of the filtration drum 300. By obtaining the arrow D3 in the figure
It is configured to rotate in the direction.

Further, on the outer peripheral surface of the filtration drum 300, a stainless wire mesh, a chemical fiber mesh, a wedge wire,
A filtration filter 302 made of punching metal or the like is wound and fixed so that it can be exchanged. The cutting oil to be filtered is passed through the filtration filter 302 to be filtered to obtain purified cutting oil. It is configured to flow into 101.

An injection pipe 145 for injecting purified cutting oil toward the filtration filter 302 in the filtration drum 300.
The so-called backwash filter 302 is installed.
By doing so, the clogging of the filtration filter 302 is eliminated and the continuous filtration operation is enabled. On the other hand, between the left and right chains 10 and 11 described above, a scooping plate 12 for sending out the shavings submerged in the filtered cutting oil toward the upstream is fixed at a predetermined interval, and the swarf is upstream. It is configured to be conveyed and discharged toward.

Further, on the outer peripheral surface of the filtering drum 300, floating cutting is carried out for allowing floating chips in the filtered cutting oil to float and float on the oil surface in the filtered cutting oil. The powder drum top plate 131 is fixed, and the filtration drum 30
The floating chips are settled with the rotation of the arrow 0 in the direction of the arrow D3 to prevent the floating chips from growing and expanding, thereby preventing the possibility that the filtration filter 302 is damaged. .

According to the above-described filtering device, the driving force of the filtering drum 300, which is rotated with one end thereof in a floating state, can be reduced, and the scooping plate provided between the left and right chains 10 and 11 at a predetermined interval. By 12, the cutting oil in the cutting oil to be filtered is sufficiently removed toward the upstream while the cutting oil is sufficiently removed from the cutting oil, and the damage of the filtration filter due to the floating chips is caused. It was confirmed that there are advantages such as being able to prevent.

[0009]

However, according to the above-described filtering device, referring to FIG.
0 is a shaft body 30 whose one side is fixed to the filtration drum.
An annular member (not shown) provided on the right side plate 103 on the other side while being pivotally supported by the bearing of the left side plate 102 by 1.
Since it is rotatably supported by the floating state,
A gap H1 must be provided between the left side plate 102 and one side surface side of the filtration drum 300.

Similarly, the right side plate 103 and the filter drum 3 are also provided.
Therefore, a gap H2 must be provided between the same and 00 as well. In the gaps H1 and H2 thus provided,
If a large amount of chips intrudes, the rotation of the filtration drum is restricted between the left and right side plates, and the drive load on the filtration drum becomes excessive, resulting in filtration in the worst case. Since the drum may be stopped, it is necessary to provide a safety device for stopping the driving of the filtration drum.

Further, due to the action of the floating cutting powder scooping plate 131, the floating cutting powder that should originally be settled in the cutting oil to be filtered flows into the upstream side in the direction of the arrow in the figure through the gap H1. Backflow sometimes occurred. Therefore, the filtering device of the present invention has been made in view of the above points,
The purpose is to reduce the driving force of the filter drum and prevent the filter drum from being overloaded,
An object of the present invention is to provide a filtration device that enables continuous operation.

In addition to the above purpose, the cutting oil is sufficiently removed from the cutting chips, damage to the filtration filter due to the floating chips can be prevented, and the excess load can be prevented. It is an object of the present invention to provide a filtering device which can prevent chips from flowing backward and which can reduce cost and facilitate maintenance and inspection by sharing a driving source with a filtering drum.

[0013]

[Means for Solving the Problems] and

In order to solve the above problems and achieve the purpose,
According to the present invention, a filtering device for obtaining a purified cutting oil by filtering the chips from the filtered cutting oil in which cutting chips and cutting oil are mixed, and a purified cutting oil soda that stores the purified cutting oil, The liquid surface of the filtered cutting oil storage soot that temporarily stores the filtered cutting oil that is input through the input port and the liquid surface of the filtered cutting oil that is stored in the overcutting oil storage soda are divided into two without a gap. At the same time, in order to allow the sealing member provided in the cutting oil to be filtered to be rotatably in a floating state and the filtering means on the outer peripheral surface to flow the purified cutting oil after filtration to the purified cutting oil soda. At least a filtering drum having a side opening opening on one side, an injection means for backwashing the filtering means from the inside of the filtering drum, and a continuous transport of cutting chips from the upstream side to the downstream side of the inlet, Scissors arranged at predetermined intervals to drop from the chip discharge port The filter drum is rotatably provided in a floating state, so that the driving force can be reduced, and the filter drum is provided without a gap, which prevents chips from entering and the filter drum is overloaded. Work to prevent becoming.

Further, it is preferable that a floating chip settling means for settling the chips floating on the liquid surface of the cutting oil to be filtered is fixedly provided on the outer peripheral surface of the filtration drum to prevent the expanded growth of the floating chips. This prevents the filtration filter from being damaged by the floating chips. Further, preferably, the filtered cutting oil storage soda is formed to be inclined obliquely upward from an intermediate part from upstream to downstream, and a chip discharge port is provided at the uppermost part,
By arranging the scooping means along the filtered cutting oil storage soda, the cutting oil is sufficiently removed from the cutting chips.

Further, preferably, a V-shaped seal or a plate-shaped seal is used for the sealing member so as to eliminate the gap between the purified cutting oil and the filtration drum. Further, preferably, the scooping means is engaged with the sprocket and the guide member arranged in the filtered cutting oil storage soda, the drum sprocket fixed to the filtration drum, the sprocket and the drum sprocket, and the guide member. By providing the endless chain guided by the above and one drive means for driving the sprocket, the filter drum and the drive source are made common to facilitate cost reduction and maintenance and inspection.

Further, preferably, a filtering device for filtering the cutting chips from the cutting oil to be filtered in which chips and cutting oil are mixed to obtain purified cutting oil, which is a purified cutting oil caustic for storing purified cutting oil. In order to temporarily store the cutting oil to be filtered that is input through the input port, the cutting oil is formed obliquely upward from an intermediate part from upstream to downstream, and a chip discharge port is provided at the uppermost part. A liquid surface of the cutting oil to be filtered to be stored which is arranged along the scooping means for cutting chips and a liquid surface of the cutting oil to be filtered stored in the overcutting oil to be stored are divided into two without a gap, and In order to provide a V-seal for rotatably providing a floating state in the filtered cutting oil storage soda and a filtering means for the filtration on the outer peripheral surface, and to allow the purified cutting oil after filtration to flow out to the purified cutting oil soda. A filtration drum having a side opening opening on at least one side; Floating swarf settling means fixed to the outer peripheral surface of the filtration drum to settle the shavings floating on the liquid surface of the overcutting oil, injection means for backwashing the filtration means from the inside of the filtration drum, and an inlet In order to convey chips continuously from the upstream side to the downstream side, drop the chips from the chip discharge port, and share the drive source with the filtering drum, the cutting chips are stored in the cutting oil storage soda. The sprocket and the guide member provided, the drum sprocket fixed to the filtration drum, the sprocket and the drum sprocket are meshed with each other,
By providing the endless chain guided by the guide member and the scooping means having one drive means for driving the sprocket, the driving force of the filtration drum can be reduced and cutting oil can be sufficiently removed from the cutting chips. Removed, it is possible to prevent the filtration filter from being damaged by the floating chips, prevent the filter drum from being overloaded, and prevent the floating chips from flowing back, and the filter drum and drive source are common By doing so, cost reduction and maintenance and inspection are facilitated.

And, preferably, a filtering device for filtering the cutting chips from the cutting oil to be filtered in which the chips and the cutting oil are mixed to obtain purified cutting oil, which is a purified cutting oil soda for storing the purified cutting oil. And the liquid level of the cutting oil to be filtered stored temporarily in the cutting oil to be filtered that is fed through the charging port and the cutting oil to be filtered stored in the overcutting oil storage caustic. In addition to dividing, a sealing member that is rotatably mounted in a floating state in the cutting oil storage soot to be filtered and a filtering means for filtration are provided on the outer peripheral surface, and the purified cutting oil after filtration flows to the purified cutting oil soda. In order to do so, a plurality of filtration drums each having a side opening opening on at least one side are provided, and an injection means for back-washing the filtration means from the inside of each filtration drum and an upstream side to a downstream side of the charging port. Continuously conveys chips and from the chip outlet By providing a scooping over means are disposed at predetermined intervals in order to made, it can reduce the driving force of the filtration drum, cutting oil from within chips are sufficiently removed,
It is possible to prevent the filtration filter from being damaged by levitation chips, prevent the filtration drum from being overloaded, prevent levitation chips from flowing back, and make the drive source common to the filtration drum. It facilitates cost reduction and maintenance inspection, and improves the purification efficiency by disposing a plurality of filtration drums.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the filter device according to the first embodiment, in which a cover and the like are removed so that a main structure inside can be seen. In this figure, the installation legs are fixed to the four corners of the clean caustic soda 1 that forms the base of the entire apparatus, and while being horizontally fixed and installed and fixed on the floor surface in the factory Purified cutting oil is stored temporarily.

Inside the clean soda 1, an oil storage part for the cut to be filtered is constructed in which the bottom of the clean soda 1 is partly common in order to store the cut oil to be filtered. Therefore, the left side plate 2 and the right side plate 3 (a part of which is indicated by a chain double-dashed line) are continuously liquid-tightly fixed to the bottom surface and the front wall surface of the clean soda 1 by welding or the like. Each of the components described in 1. is generally provided with these left and right side plates 2 and 3 as mounting portions.

First, the left and right side plates 2 and 3 are provided such that the rear side of the apparatus is downstream and the front side of the drawing is upstream as shown in the drawing, and the downstream side has a shape extending obliquely upward as shown in the drawing. At the uppermost part of the cage, a chip discharge port 4 shown by a broken line is formed between both side plates, and is configured to drop the chip into a chip collection box 9 which is moved below the chip discharge port 4. ing.

Further, the uppermost stream side of the left and right side plates 2 and 3 is formed so as to be substantially juxtaposed with the side wall of the clean soda 1 and is rotatably held between the left and right side plates 2 and 3 as described later. On the upstream side (front side of the device) of the filtration drum 30, an opening 8 that opens upward is formed, so that the cutting oil to be filtered can be appropriately introduced into the storage portion of the cutting oil to be filtered through this opening 8. It is configured.

Next, a bearing (not shown) is arranged at an obliquely upper portion on the downstream side of the left and right side plates 2 and 3, and a sprocket shaft 17 having a pair of left and right upper sprockets 18 fixed thereto is rotatably supported. ing. Also, this sprocket shaft 1
An output shaft 16 of a drive motor 15 fixed to the left side plate 2 and integrally provided with a speed reducer is connected to the drive shaft 7, and an upper sprocket 18 is driven by the drive motor 15.
Can be continuously driven in the clockwise direction.

On the other hand, bearings (not shown) are similarly arranged on the uppermost stream side of the left and right side plates 2, 3 in the front of the drawing.
A sprocket shaft 29, to which a pair of left and right lower sprockets 28 are fixed, is rotatably supported. The upper sprocket 18 and the lower sprocket 28 provided as described above.
In between, an endless left chain 10 and a right chain 11 which are partially omitted in the figure by a one-dot chain line are shown.
Are assembled in mesh with each other. The left chain 10 and the right chain 11 are guided substantially along the left and right side plates 2 and 3 as shown in the figure, and in order to give a rotational driving force to the filtration drum 30 in the middle, An upper chain guide 20 and a lower chain guide 21 are fixed at the conversion portion, and a drum chain guide 22 is fixed on the opposing surfaces of the left and right side plates 2 and 3 on the upstream side and the downstream side of the filtration drum 30, respectively.

On the other hand, a predetermined number of scooping plates 12 are fixed between the left chain 10 and the right chain 11 at predetermined intervals to send out the sinking chips in the oil to be filtered toward the upstream side. , The cutting oil is conveyed and discharged toward the upstream, and the cutting oil in the cutting oil is removed from the cutting oil while being conveyed a sufficient distance toward the upstream side of the above-mentioned cutting oil discharge port 4. I am trying to remove it sufficiently.

Further, a drum sprocket 34 is fixed to the outer peripheral surface of the filtration drum 30, and when the left chain 10 meshing with the drum sprocket 34 receives a turning force, the drum sprocket 34 is rotated clockwise. Configured to move. Further, a filtration filter 44 made of stainless wire mesh, chemical fiber mesh, wedge wire, punching metal or the like is exchangeably fixed to the outer peripheral surface of the filtration drum 30 in a wound state. After passing through 44 to obtain purified cutting oil by filtration, the circular opening 5 formed in the left side plate 2 or the semicircular opening 6 shown by a broken line in the right side plate 3 in the clean soda 1 Is configured to flow out through.

On the other hand, an injection pipe 45, which is connected to a pipe 46 and a pump 47 for ejecting the purified cutting oil toward the filtration filter 44, is arranged in the filtration drum 30. By performing the so-called back washing on the filtration filter 44, the clogging of the filtration filter 44 is eliminated and the continuous filtration operation is enabled. further,
On the outer peripheral surface of the filtration drum 30, a floating cutting powder scooping plate 31 for allowing floating chips in the filtered cutting oil to float and float on the oil surface in the filtered cutting oil. Is fixed, and the floating chips are settled in the cutting oil to be filtered as the filtration drum 30 rotates clockwise.
The floating chips are prevented from growing and expanding to prevent the possibility of damaging the filter 44.

According to the above-described filtering device, the driving force is obtained from the single driving motor 15 which is a common driving source, and the scooping plate 12 and the scooping plate 12 which are provided at a predetermined interval between the left and right chains 10 and 11. Since both of the drums 30 can be driven, it can be constructed at low cost. Further, since the input port 8 for the cutting oil to be filtered can be set at a low position, the input work is facilitated, and the chips are discharged from above the collection box 9 having a relatively high dimension through the chip discharge port 4. Since it can be configured to drop, a very rational layout can be realized.

FIG. 2 is a sectional view taken along the line AA of FIG. In this figure, the components already described in FIG. 1 are denoted by the same reference numerals and the description thereof is omitted. The support state of the filtration drum 30 will be mainly described. The circular opening 5 of the left and right side plates 2 will be described. An annular guide member 40 extending toward the storage portion of the cutting oil to be filtered is fixed by welding or the like in the vicinity of. Further, to the right side plate 3, a mounting plate 41 having the above semicircular opening 6 formed therein and having the injection pipe 45 fixed thereto is fixed using a plurality of bolts and nuts 14. Similarly, an annular guide member 40 extending toward the storage portion of the cutting oil to be filtered is fixed by welding or the like,
The filtration drum 30 configured as a separate component can be set in the assembled state shown in the figure.

On the other hand, the filtering drum 30 is integrally welded between the left and right annular base portions 27 using a plurality of pipe members 26 so as to have a predetermined width, and the drums are formed on the outer peripheral surfaces of these base portions 27. Sprocket 34 and guide 32
Are fixed to each other, and are configured to engage and guide the left and right chains 10 and 11. The floating cutting powder scooping plate 31 is fixed to the base portion 27 by using the bolts and nuts 14, while the filtration filter 44 is also fixed in a wound state stretched between the base portions 27.

Next, in the filtration drum 30 constructed as described above, each base portion 27 is inserted and supported in a loosely fitted state with respect to each guide member 40, while the base portion 27 of the filtration drum 30 has an edge portion. A rubber seal member 33 called, for example, a V-seal is fixed, and the seal portion 33a is provided on the left and right side plates 2.
And a wall surface of the mounting plate 41.

By constructing and supporting the filtering drum as described above, the filtering drum 30 is kept in a floating state as the liquid level L1 of the cutting oil to be filtered rises, and the rotational force in the clockwise direction is reduced. The floating chips may be settled in the cutting oil to be filtered by the action of the floating chips scooping plate 31 to prevent the floating chips from growing and expanding and damage the filtration filter 44. Prevent that.

The filtering drum 30 is attached to the left and right side plates 2, 3
Since the seal member 33 is provided so as to be free from any gap and rotatable between the three parts, it is possible to completely prevent the floating chips from entering the downstream side. FIG. 3 is a side view showing the configuration of the main part of the filtration device described above, and is an operation diagram. In this figure, to describe the unexplained constituent parts, an inclined plate 7 inclined as shown in the drawing is provided on the upstream side in the vicinity of the chip discharge port 4, and cutting oil is finally removed from the chips. I am trying. Further, the scaffold 13 is provided on the inclined portion to facilitate inspection and the like.

In the figure, the operation of the filtration device will be described. The cutting oil to be filtered is introduced from the introduction port 8 and the filtration drum 30 is floated. Following this, when a switch (not shown) is turned on, the upper sprocket 18 starts rotating in the direction of arrow D1 in the figure, and as a result, the left and right chain 1
0 and 11 also move in the direction of arrow D2, and are turned substantially horizontally by the upper chain guide 20 so as to follow the outer peripheral surface of the filtration drum 30 by the drum chain guide 22 or mesh with the drum sprocket 34. By being guided, the filter drum 30 is driven in three directions by the arrows in the figure. Further, the left and right chains 10 and 11 are further reversed in direction by the lower sprocket 28, and are guided toward the downstream side in the direction of arrow D4 in the figure, and further guided by the lower chain guide 21 in the direction of diagonally upward arrow D5. .

Before and after this series of operations, the pump 47 is activated, and the purified cutting oil is vigorously ejected from the ejection pipe 45 toward the filtration filter 44 to perform back washing.
After the above operation for a predetermined time, the purified cutting oil is washed and stored in the clean soda 1 so as to rise to the liquid level L2. In this series of operations, the liquid level L1 of the cutting oil to be filtered is
Of the floating chips F1 and F2 floating above, the floating chips F1 floating on the injection port 8 side of the cutting oil to be filtered are
Mixing with the floating chips F2 floating on the downstream side of the filtration drum 30 is completely prevented. In addition, by the action of the floating cutting powder scooping plate 31, the floating cutting powder F is contained in the cutting oil to be filtered.
By allowing 1 and F2 to settle, it is possible to prevent the floating chips from growing and expanding and preventing the filtration filter 44 from being damaged. Further, in the filter drum 30, the seal portion 33 a of the seal member 33 has the left and right side plates 2 and the mounting plate 41.
When it comes into close contact with the wall surface of the machine, it rotates, so there is no overload, and continuous operation is possible. Depending on the combination with the box,
It can also be operated continuously without a driver.

Next, a second embodiment will be described with reference to the side view of FIG. In this figure, the components already described are given the same reference numerals and the description thereof will be omitted. Only the different characteristic parts will be described. The second filtering drum 50 is provided on the inlet 8 side of the device. Are provided as described with reference to FIG. Further, a second injection pipe 145 is provided inside the second filtration drum 50, and is configured to perform back washing of the filtration filter.

According to the filtration device constructed as described above, the purification action is doubled by at least the addition of the second filtration drum 50. Therefore, in addition to the above-described actions and effects, the left and right chain conveying speeds are increased. It has the effect of being able to double. Further, even if one of the filtration drums is completely clogged, it is possible to expect a certain purifying action. Further, although not shown, a third filtration drum can be further added to realize a more effective purification action.

The present invention is not limited to the above-mentioned structure, and each structure can be appropriately designed and modified.
The left and right side plates 2 and 3, which occupy a relatively large area, and the clean caustic soda 1 and the like form an outer skeleton, and an iron plate having a predetermined thickness is appropriately welded to form the filter drum 30. The filtration filter may be fixed to the one body. Furthermore, the injection direction of the injection pipe 45 is not limited to the direction shown in FIG. 1 and can be changed as appropriate. Further, when the cutting chips are limited to iron, the sinking of the cutting chips can be promoted by disposing a permanent magnet on the bottom surface of the storage chamber for the cutting oil to be filtered.

[0038]

As described above, according to the first aspect of the present invention, it is possible to provide a filtering device capable of reducing the driving force of the filtering drum and preventing the filtering drum from being overloaded. According to the second aspect of the present invention, the driving force of the filter drum can be reduced, the cutting oil can be sufficiently removed from the chips, and the filter chips can be prevented from being damaged by the floating chips. It is possible to provide a filtration device that can prevent a load state, can further prevent floating chips from flowing backward, and can reduce cost and facilitate maintenance and inspection by using a common drive source with the filtration drum.

According to the third aspect of the present invention, it is possible to provide a filter device which can reduce the driving force of the filter drum, prevent the filter drum from being overloaded, and improve the purification efficiency.

[Brief description of drawings]

FIG. 1 is an external perspective view of a filtering device according to a first embodiment, in which a cover and the like are removed so that a main structure inside can be seen.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a side view showing the operation of the filtration device.

FIG. 4 is a filter device according to a second embodiment.

FIG. 5 is a plan view showing a part of a conventional filtering device with a part thereof except a cover and the like broken away.

[Explanation of symbols]

 1 Clean Sulfur (Purified Cutting Sulfuric Acid) 2 Left Side Plate (Component of Filtered Cutting Sulfuric Acid) 3 Right Side Plate (Component of Filtered Cutting Sulfuric Acid) 4 Chip Discharge Port 5 Circular Opening 6 Semicircular Opening 8 Input port for cutting oil to be filtered 9 Recovery box 10 Left chain (component of scooping means) 11 Right chain (component of scooping means) 12 Scooping plate (component of scooping means) 15 Drive motor 17 Sprocket shaft 18 Upper sprocket 28 Lower sprocket 30 Filtration drum 31 Floating cutting powder scooping plate 32 Guide portion 33 Sealing member 34 Drum sprocket 40 Matching member 41 Mounting plate 44 Filtration filter (filtering means) 45 Injection pipe (components of injection means) 47 Pump (Components of Injection Means) 50 Second Filtering Drum

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location B01D 33/58 B23Q 11/00 U

Claims (7)

[Claims] 1. A filtering device for filtering chips from filtered cutting oil in which chips and cutting oil are mixed to obtain purified cutting oil, wherein the purified cutting oil soda stores the purified cutting oil. The cutting oil to be filtered stored temporarily for storing the cutting oil to be filtered, which is fed through the charging port, and the liquid surface of the cutting oil to be stored, stored in the overcutting oil to be filtered, without any gaps. A seal member which is divided into two and is rotatably provided in a floating state in the cutting oil storage soda to be filtered,
A filtering drum provided on the outer peripheral surface for filtering, and having a side opening opening on at least one side for flowing the purified cutting oil after filtration to the purified cutting fluid, and an inner side of the filtration drum The spraying means for backwashing the filtering means, and the scoops arranged at a predetermined interval so as to continuously convey the chips from the upstream side to the downstream side of the charging port and drop them from the chip discharging port. A filtering device comprising: an upper part; 2. A floating chip settling means for settling chips that float on the liquid surface of the oil to be filtered is fixedly provided on the outer peripheral surface of the filtering drum. The described filtering device. 3. The cutting oil to be filtered to be stored is formed so as to incline obliquely upward from an intermediate portion from upstream to downstream, the chip discharge port is provided at an uppermost portion, and the scooping means is provided with The filtration device according to claim 1, wherein the filtration device is arranged along the filtered cutting oil storage soda. 4. The filtration device according to claim 1, wherein a V-shaped seal or a plate-shaped seal is used as the sealing member. 5. The scooping means is fixed to the filtering drum, and a sprocket and a guide member arranged in the filtered cutting oil storage soda in order to share a driving source with the filtering drum. 2. A drum sprocket, an endless chain engaged with the sprocket and the drum sprocket, and guided by the guide member, and one drive means for driving the sprocket. The described filtering device. 6. A filter device for obtaining a purified cutting oil by filtering chips from a cutting oil to be filtered in which chips and cutting oil are mixed, wherein the purified cutting oil soda stores the purified cutting oil. In order to temporarily store the to-be-filtered cutting oil input through the input port, the cutting oil is formed obliquely upward from an intermediate part from upstream to downstream, and a chip discharge port is provided in the uppermost part, While filtering the cutting oil to be stored stored along the scooping means for cutting chips, and the liquid surface of the cutting oil to be stored in the overcutting oil storage soda, the liquid level is divided into two parts without a gap, A V-seal for rotatably providing a floating state in the filtered cutting oil storage soot and a filtering means for filtration are provided on the outer peripheral surface, and the purified cutting oil after filtration flows out to the purified cutting oil soda. Filter drum having a side opening opening on at least one side for allowing A floating chip settling means fixed to the outer peripheral surface of the filtration drum in order to settle the cutting chips floating on the liquid surface of the filtered cutting oil; and the filtering means from the inside of the filtration drum. A jetting means for backwashing, a chip is continuously conveyed from the upstream side to the downstream side of the charging port, the chip is dropped from the chip discharging port, and the filter drum and the driving source are made common. Therefore, a sprocket and a guide member disposed in the filtered cutting oil storage soda, a drum sprocket fixed to the filtration drum, and the sprocket and the drum sprocket are meshed with each other and guided by the guide member. And a scooping means having one drive means for driving the sprocket, and a filtering device. 7. A filtering device for filtering cutting chips from filtered cutting oil in which cutting chips and cutting oil are mixed to obtain purified cutting oil, wherein the purified cutting oil soda stores the purified cutting oil. The cutting oil to be filtered stored temporarily for storing the cutting oil to be filtered, which is fed through the charging port, and the liquid surface of the cutting oil to be stored, stored in the overcutting oil to be filtered, without any gaps. A seal member which is divided into two and is rotatably provided in a floating state in the cutting oil storage soda to be filtered,
A filter means for filtering is provided on the outer peripheral surface, and a plurality of filter drums each having a side opening opening on at least one side are provided to allow the purified cutting oil after filtration to flow out to the purified cutting fluid. From the inside of each of the filtering drums, an injection unit that back-washes the filtering unit, and a chip that is continuously conveyed from the upstream side to the downstream side of the charging port to drop from the chip discharging port. And a scooping means arranged at a predetermined interval.