JPH11156126A - Oil filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent environmental pollution and environmental destruction by limiting the amount of used oil filters as industrial wastes to be disposed to the minimum and repeatedly using the main constituents of the used oil filters without discarding the filters and at the same time to lower the cost of the oil filters by recycling the filters and remarkably benefit users. SOLUTION: This oil filter 1 is constituted of a body 2 made of a metal and a filtration layer main body 10 attached to the outer circumferential face of the body 2 in a freely detachable manner. The filtration layer main body 10 is made of an unwoven cloth absorbing no oil and the whole body is formed by zigzag bending unwoven cloth. In the case the oil filter 1 is exchanged with a new one, only the filtration layer main body 10 made of an unwoven cloth is exchanged and the body 2 made of a metal is reused and a new filtration layer main body 10 is attached to the outer circumferential face of the body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a dry cleaning machine, and is used in an oil filter for filtering an oily cleaning solvent circulating in the inside, and in an engine part of an automobile, a construction, and a civil engineering vehicle, and circulates. The present invention relates to an oil filter for filtering lubricating oil and an oil filter for filtering oil used for electric discharge machining.

[0002]

2. Description of the Related Art FIG. 34 is a front view of a fully automatic dry cleaning machine 51. An operation panel 52 is provided on the front upper portion of the dry cleaning machine 51. A rotary drum 53 for washing the laundry through a door below the operation panel 52 is provided.
A double door 54 at the bottom of the dry cleaning machine 51,
55 is provided so that opening and closing are possible. Behind the doors 54 and 55, a filter case 56 containing an oil filter for removing dust such as fiber waste flowing out of the drum 53 and activated carbon for removing the smell of the cleaning solvent are contained. An activated carbon case 57, a solvent tank 58 for storing the oily solvent, and the like are provided.

FIG. 35 is a schematic block diagram showing the flow of a solvent in a dry cleaning machine 51. A drum 53, a filter case 56, an activated carbon case 57, and a solvent tank 58 are shown.
A pump 59 is interposed in the middle of a pipe connecting the rings in an annular manner. By driving the pump 59, the oily solvent in the solvent tank 58 is refluxed in the direction indicated by the arrow in the figure. Thus, by rotating the drum 53 for a predetermined time, clothes and the like in the drum 53 are washed, dust such as fiber waste is removed by an oil filter in the filter case 56, and only the solvent is filtered. Activated carbon in 57 removes solvent odor.

[0006] FIG. 36 is an exploded perspective view showing a state in which two oil filters 61 are installed in the cylindrical filter case 56. A shaft 62 is provided in the center of the filter case 56 along the axial direction. A cylindrical oil filter 61 is mounted on the shaft 62 via a felt packing 63 and a holding plate 64. By bolting the lid 65, the oil filter 6
1 will be stored in the filter case 56.
A rubber packing 66 is interposed between the lid 65 and the front end surface of the filter case 56 to seal the inside.

FIG. 37 is a perspective view of the oil filter 61, which is shown in FIGS.
As shown in FIG. 9, a cylindrical body 2 made of metal such as tinplate.
And a paper filter paper 7 attached to the outer peripheral surface of the body 2.
3 is comprised. Flanges 5 are integrally formed on both sides of the body 2, and a large number of through holes 4 are formed at predetermined intervals in the body 3 of the body 2. The filter paper 73 made of paper is bent in a zigzag shape (bellows shape), and the filter paper 73 is fixed to the outer peripheral surface of the body 2. The size of the oil filter 61 used in this type of dry cleaning machine 51 has an outer diameter of 34 cm and an axial length of about 45 cm.

Next, the operation of the dry cleaning machine 51 will be briefly described. When the pump 59 is driven, the inside of the body 3 of the oil filter 61 has a negative pressure, and a fluid such as an oily solvent flows from the drum 53 to the oil filter 61.
Through the through-hole 4. Dust such as fiber waste discharged from the drum 53 adheres to the surface of the filter paper 73, and large dust adheres to the outer peripheral surface of the filter paper 73 and the valley portion of the bent space. Fine dust is blocked by the paper filter 73 itself, and the liquid solvent is filtered by the filter paper 7.
The oil passes through the oil filter 61, flows through the through hole 4 of the oil filter 61, flows into the body 3, and flows into the activated carbon case 57 in the next step.

[0007] As the number of times of washing increases, a large amount of dust adheres to the oil filter 61, so that the air pressure in the pipe becomes a predetermined value, whereby the oil filter 61 is replaced. Then, as shown in FIG. 36, the lid 65 is removed, and the oil filter 61 in the filter case 56 is taken out.
Replace with

FIG. 40 is a schematic block diagram of an engine part of a vehicle, and an oil filter 86 is also used in this part. These components are well known and will not be described in detail. However, in a gasoline engine or a diesel engine, oil accumulated in an oil pan 80 reciprocates a piston 76 via an oil filter 86 by an oil pump 81. The lubricating oil (oil) is sent to the cylinder 75, the camshaft 77, the rocker arm 78, the crankshaft 79, and the like, and lubricates each part. The oil filter 86 cleans the lubricating oil circulating in the engine.

FIG. 41 is a perspective view of the oil filter 86. The configuration of the oil filter 86 is basically the same as that of the oil filter 61 shown in FIGS. Although the size and shape of the oil filter 86 differ depending on the type of gasoline engine, diesel engine, construction vehicle, ordinary passenger car, etc., a metal cylindrical body 2 such as tinplate and a zigzag bend are formed on the outer peripheral surface of the body 2. This is the same as the filter paper 88 made of paper (see FIGS. 38 and 39). Reference numeral 4 denotes a flow hole through which the lubricating oil filtered through the filter paper 88 passes.

The oil filter 86 adsorbs metal powder generated in the engine, especially in the cylinder, soot generated by combustion, and filters the lubricating oil circulating in the engine. The lubricating oil is filtered by adhering a lump of sulfur contained in the light oil. Then, the oil filter 86 used for each of the number of months used for a certain period of the vehicle and the mileage.
Is replaced with a new oil filter 86.

[0011]

The basic structure of each of the oil filters 61 and 86 shown in FIGS. 37 and 41 is as follows.
2 and filter papers 73 and 88 mounted on the outer peripheral surface. Also, the filter papers 73 and 88 are bent in a zigzag or bellows shape, and large dust adheres to the valleys in this portion. Filter the oil. Further, since the filter papers 73 and 88 are made of paper, an increase in the price of the oil filters 61 and 86 is suppressed.

However, such an oil filter 61,
86 has the following problems. In particular, the oil filter 61 used in the dry cleaning machine 51 has a size of 34 cm in outer diameter and an axial length of 45 cm, and the length of filter paper 73 used in the oil filter 61 is about 20 m. . When the filter paper 73 is used up to a certain number of washings or a predetermined pressure, the filter paper 73 absorbs an oily solvent, so that the oil filter 61 itself becomes very heavy. Therefore, there is a problem that the replacement work of the oil filter 61 is very difficult. In particular, the used oil filter 61 has not been regenerated, and all are currently disposed of as industrial waste (landfill, etc.). The cost of disposing of this industrial waste costs about 3,000 yen, and businesses are suffering from high burdens. This boils back to the consumer as a cleaning fee, and also disadvantages the consumer.

Here, what is more problematic than the disposal cost of the oil filter 61 is that it is disposed as industrial waste. In particular, when the oil filter 61 that absorbs oil is buried in the ground, there is a problem of environmental pollution, and the landfill of industrial waste is almost gone, rather than being limited. The reality is coming. As a result, the fact that illegal dumping of malicious industrial waste companies has not been overtaken has actually occurred. In addition, products are being recycled from the viewpoint of environmental pollution and environmental destruction. Discarding products such as landfills as disposal of products is against the movement of recycling.

An oil filter 8 for a vehicle shown in FIG.
6 is also the same as above, and all used oil filters 86 after being replaced with new ones have been disposed of such as landfills, and have not been recycled at all. for that reason,
Environmental pollution and destruction are progressing rapidly throughout the earth.

[0015] The same applies to an oil filter for filtering oil used when cooling a workpiece in electric discharge machining. Although not shown, a metal inner cylinder and an outer cylinder each having a large number of holes as shown in FIG. 38 are provided in the container of the oil filter, and a filter paper shown in FIG. 41 is provided on the outer peripheral surface of the inner cylinder. A similar zigzag paper filter paper is mounted, and a zigzag paper filter paper is also mounted on the inner peripheral surface of the outer cylinder.

The oil used for electric discharge machining is fed from one of the containers, and the filtered oil is discharged from the other of the containers.
With filtration. In this case, oil is fed between the filter paper attached to the outer peripheral surface of the inner cylinder and the filter paper attached to the inner peripheral surface of the outer cylinder, and both filter papers attach metal powder and impurities to remove the oil. I try to filter it neatly.

Similarly to the oil filters 61 and 86, the oil filter used for electric discharge machining is a metal cylinder (inner cylinder and outer cylinder) and a paper filter mounted on these inner cylinder and outer cylinder. It is made up of paper and a metal container for accommodating them, and after a large amount of metal powder generated during electric discharge machining is attached, the oil filter is replaced. There was no idea to replace the filter paper of the oil filter at the time of replacement, and the entire container (oil filter) was discarded. Therefore, as with the oil filters 61 and 86 described above, they are treated (filled) as industrial waste, which is also a social problem. Using a method of simply discarding landfills without recycling used oil filters is an anti-social act in modern society, and will also destroy nature.

The oil filters 61 and 86 use filter papers 73 and 88 made of paper as a member for filtering oil. The filter papers 73 and 88 made of paper are used for adhering dust and impurities. Fine and thick paper is used. Therefore, it is necessary to increase the pressure in order to forcibly circulate the oily solvent or oil, and furthermore, in order to withstand such a large pressure, the body 2 is formed in a cylindrical structure, and the outer peripheral surface of the body 2 is zigzag. The filter paper 73, 88 bent in a shape is attached. In addition,
The same applies to an oil filter used for electric discharge machining.

The present invention has been made in view of the above points, and is not to dispose of the whole used oil filter as industrial waste, but to minimize the disposal as industrial waste, and The primary objective is to recycle components without discarding them many times without discarding them, thereby preventing environmental pollution and environmental destruction, and reducing costs by recycling oil filters to reduce consumption. It is intended to provide an oil filter whose second object is to give a great benefit to a user.

[0020]

Therefore, in the oil filter according to the first aspect of the present invention, there is provided a cylindrical body 2 having a large number of holes 4 formed therein, and a dirt and impurities attached to the outer peripheral surface of the body 2. And a filter layer for filtering oily fluid containing the filter fluid. In the oil filter for filtering the oily fluid through the filter layer and the hole 4 of the body 2, the filter layer for filtering the oily fluid is a filter layer main body. 10, the material of the filtration layer main body 10 is made of a material that does not absorb oil, and the whole is bent substantially in a zigzag shape, and the filtration layer main body 10 is detachably attached to the body 2. It is characterized by.

With this configuration, the oily fluid containing dust and impurities is filtered by the filter layer main body 10. Relatively large dust and impurities adhere at the zigzag valleys, and fine dust and impurities adhere at the filtration layer body 10 itself. When replacing the oil filter, instead of discarding the oil filter itself, only the filter layer main body 10 attached to the body 2 is removed and only the new filter layer main body 10 is replaced. Further, the filter layer main body 10 does not absorb oil even to a fluid such as oil or an oily solvent, so that the weight of the filter layer main body 10 is not increased, and the oil filter itself is replaced with a new one.
The work of replacing 0 is also easy.

Further, in the oil filter according to the second aspect, the frame 34 and the filter layer main body 1 mounted inside the frame 34 for filtering an oily fluid containing dust and impurities.
And the filter layer main body 10 is made of a material that does not absorb oil, and the whole is bent in a substantially zigzag shape so that the filter layer main body 10 is detachably mounted in the frame 34. It is characterized by being worn.

With this configuration, the oily fluid containing dust and impurities is filtered by the filter layer main body 10. Relatively large dust and impurities adhere at the zigzag valleys, and fine dust and impurities adhere at the filtration layer body 10 itself. When replacing the oil filter, instead of discarding the oil filter itself, only the filter layer main body 10 attached to the body 2 is removed and only the new filter layer main body 10 is replaced. Further, the filter layer main body 10 does not absorb oil even to a fluid such as oil or an oily solvent, so that the weight of the filter layer main body 10 is not increased, and the oil filter itself is replaced with a new one.
The work of replacing 0 is also easy. Further, since the configuration of the oil filter includes the frame 34 and the filter layer main body 10 detachably mounted in the frame 34, the entire oil filter can be reduced in size.

In the oil filter according to the third aspect,
An oil filter that is used for electric discharge machining and filters oil containing metal powder and impurities generated at the time of electric discharge machining, and is a cylindrical outer cylinder 93 having a large number of holes 94 formed therein.
And an inner cylinder 91 which is disposed substantially concentrically with the outer cylinder 93 at the center of the outer cylinder 93 and has a large number of holes 92 formed therein.
And an outer filter layer main body 10a bent substantially zigzag on the inner peripheral surface of the outer cylinder 93, and an inner filter layer bent substantially zigzag on the outer peripheral surface of the inner cylinder 91. Body 1
0b, the outer filtration layer main body 10a and the inner filtration layer main body 10b are made of a material that does not absorb oil,
It is characterized in that it is detachably attached to the outer cylinder 93 and the inner cylinder 91, respectively.

With this configuration, oil containing metal powder and impurities is filtered by the outer filtration layer main body 10a and the inner filtration layer main body 10b. Relatively large metal powders and impurities adhere at the zigzag valleys, and fine metal powders and impurities adhere at the filtration layer body 10 itself. When replacing the oil filter, instead of discarding the oil filter itself, only the outer filtration layer main body 10a and the inner filtration layer main body 10b attached to the outer cylinder 93 and the inner cylinder 91 are removed and a new outer filter body is removed. Exchange only the filtration layer main body 10a and the inner filtration layer main body 10b. Also,
Since the filtration layer body 10 does not absorb oil (oil),
Since the weight is not heavy, the work of replacing the oil filter itself and the work of replacing the filtration layer main body 10 become easy.

In the oil filter according to the fourth aspect, the filter layer main body 10 is characterized in that activated carbon 16 is mixed therein. Thereby, the oily odor contained in the oily fluid can be deodorized.

Further, the oil filter according to the fifth aspect is characterized in that the filtration layer main body 10 is composed of one or a plurality of layers. Thereby, especially when the filtration layer main body 10 is composed of a plurality of layers, dust and impurities contained in the oily fluid can be sufficiently filtered.

In the oil filter according to the sixth aspect, the oil filter 1 is provided with a dry cleaning machine 5.
1 is characterized in that it is used as a filter 1 for removing fiber waste and the like. Thereby, the filtration layer main body 1
0 does not absorb oil, so dry cleaning machine 5
The replacement work of the filter 1 of a certain size becomes very easy. Further, unlike the related art in which the entire filter is conventionally discarded, only the filter layer main body 10 is discarded, and the cost of disposal can be reduced.

Further, the oil filter according to claim 7 is characterized in that the oil filter 30 is used as an oil filter 30 in an engine of a vehicle or the like. Therefore, unlike the related art in which the entire oil filter is conventionally discarded, only the filter layer main body 10 is discarded, and the cost of disposal can be reduced.

The oil filter according to claim 8 is characterized in that the filter layer main body 10 is made of a nonwoven fabric. Thus, the filter layer main body 10 that does not absorb oil can be formed easily and at low cost.

Further, the oil filter according to the ninth aspect is characterized in that the first filtration layer 11 of the filtration layer main body 10 has a double Russell structure and has a substantially honeycomb shape. Accordingly, the attached dust and impurities can be attached and held without dropping from the filter layer main body 10, and in the dry cleaning machine 51, an erroneous operation of stopping operation due to clogging of the pipe with the dust or the like can be prevented.

The oil filter according to the tenth aspect is characterized in that the first filter layer 11 of the filter layer main body 10 has a larger number of projections 20 than the lower base 19. Therefore, the fiber waste can be attached and held by the fiber waste being entangled with the projection 20.

Further, in the oil filter according to the eleventh aspect, the filter layer main body 1 is provided on the opening surfaces on both sides of the frame body 34.
It is characterized by having means 35 and 39 for preventing the 0 from falling off. Thereby, the filtration layer main body 1 is placed in the frame 34.
Even with a simple structure in which the oil filter 33 is mounted, the filter layer main body 10 can be prevented from falling off from the inside of the frame 34, and the function as the oil filter 33 can be sufficiently exhibited.

The oil filter according to the twelfth aspect is characterized in that the filter layer main body 10 has a substantially honeycomb structure.

The oil filter according to the thirteenth aspect is characterized in that silica gel for absorbing moisture is mixed into the filter layer main body 10. With this configuration, the moisture mixed in the oily fluid can be absorbed by the silica gel, and the moisture can be removed from the oily fluid along with dust, fiber waste, and metal powder.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described below in detail with reference to the drawings. First, the configuration of the oil filter 1 used in the dry cleaning machine 51 shown in FIG. 34 will be described. As shown in FIGS. 1 and 2, the oil filter 1 is made of a metal such as stainless steel or aluminum and has a cylindrical body 2 having both ends opened, and a filter layer body detachably mounted on the outer peripheral surface of the body 2. 10. The filtration layer main body 10 has flexibility and is for filtering a solvent for cleaning. Here, the shape of the body 2 is the same as that of the current dry cleaning machine 5 shown in FIG.
The size and shape are the same so as to be applied to 1 as it is. That is, a large number of through holes 4 are formed in the body 3 of the body 2 over the entire surface, and flange portions 5 are integrally formed at both ends as in the conventional case. However, as a material of the body 2, unlike a conventional case using tinplate, stainless steel, aluminum, or the like that can withstand aging because of repeated use is used.

Next, the filter layer main body 10 which is detachably attached to the outer peripheral surface of the body 3 of the body 2 will be described. Filtration layer body 1
0 itself is made of a non-woven fabric made of a material that does not absorb oil, and is entirely bent in a zigzag or bellows shape. It is detachably mounted on the outer peripheral surface of the body 2. As shown in FIG. 3 showing a cross-sectional view in which a part of the filtration layer main body 10 is enlarged, the filtration layer main body 10 has a configuration in which an activated carbon layer 16 is sandwiched between upper and lower sheets 15 made of a nonwoven fabric. Here, the filtration layer main body 10
The upper and lower sheets 15 are made of, for example, polyester as a material and have a basis weight of 30 g / m ² . The activated carbon of the activated carbon layer 16 is 20 to 100.
g / m is about ^2, 40 to 50 g / m ² by an adhesive resin
Approximately, the sheet 15 and the activated carbon are integrally bonded and fixed. The filter layer body 10 containing the activated carbon layer 16 removes the odor of the solvent, and the sheet 15 and the activated carbon layer 16
To attach garbage.

Although the filter layer main body 10 has a three-layer structure, the filter layer main body 10 may be formed by mixing activated carbon into a single-layer sheet-like nonwoven fabric.

Further, as shown in FIG. 4, the filtration layer main body 10 may be constituted by one layer of nonwoven fabric without mixing activated carbon. Here, as the material of the filtration layer main body 10 shown in FIG. 4, for example, polyethylene, polyester, nylon, or the like that does not absorb oil is used.

Here, since it is difficult to bend the sheet-like nonwoven fabric in a zigzag shape as shown in FIG. 1 without any contrivance, the present invention has a structure as shown in FIG. In other words, in FIG. 5 (a), when the broken line portion is the mountain fold portion 7 of the filtration layer main body 10 and the solid line portion is the valley fold portion 8, as shown in FIG. The sewn portion is sewn on the upper surface of the nonwoven fabric on the folded portion 7 side and on the lower surface of the nonwoven fabric on the valley folded portion 8 side. Then, as shown in FIG. 5 (a), the thread 9 is sewn at predetermined intervals of the nonwoven fabric, and the entire nonwoven fabric is folded in a zigzag shape so that the thread 9 is bent to give a zigzag filter layer main body. 10 are formed.

The size of the filter layer main body 10 is substantially the same as that of the conventional filter paper 73. This is the conventional body 2
This is because it can be used or used as it is without changing the size and shape of the. This also eliminates the need to change the structure and size of the filter case 56 in which the oil filter 1 is installed.

8 to 1 are attached to the end of the filtration layer main body 10.
As shown in FIG. 0, a pair of planar fasteners 23 and 24 are mounted. That is, in FIGS. 8 and 9, the planar fastener 23 is attached to the lower surface of the joining piece 25 a extending from one end 25 of the filtration layer main body 10,
On the upper surface of the joining piece 26a extending from the other end 26 of the filtration layer main body 10, a planar fastener 24 paired with the planar fastener 23 is mounted. The filtration layer main body 10 is covered on the outer peripheral surface of the body 3 of the body 2 and the planar fasteners 23 and 24 at both ends of the filtration layer main body 10 are attached to each other, so that the filtration layer main body 10 is detachably attached to the body 2. Will be done. Further, the filtration layer main body 10 is
When detaching the filter layer main body 10 from the body 2, the planar fasteners 23 and 24 can be easily peeled off by peeling off one end portion 25.

FIG. 10 shows a case where the mounting positions of the planar fasteners 23 and 24 are changed, and a pair of planar fasteners 23 and 2 are attached to the side surfaces of the ends 25 and 26 of the filter layer main body 10.
4 is attached. FIG. 9 shows a case where the planar fasteners 23 and 24 are adhered in the vertical direction.
Is a case where the planar fasteners 23 and 24 are bonded in the left-right direction.

The method of mounting the body 2 on the body 3 is as follows.
The present invention is not limited to the planar fasteners 23 and 24 described above. For example, the both ends of the filtration layer main body 10 are sewn once or plural times with a thread made of a synthetic resin, so that the filtration layer main body 10 is sewn.
May be detachably attached to the body 2.

FIG. 6 is a horizontal sectional view of the oil filter 1 in which the filter layer main body 10 is mounted on the body 2, and FIG. 7 is a vertical sectional view of the oil filter 1. The arrow shown in FIG. 7 indicates the direction in which the fluid (oil-based solvent of the dry cleaning machine 51) flows.

Here, the filter layer main body 10 shown in FIG. 3 uses the following. The non-woven fabric constituting the filter layer main body 10 is manufactured by Asahi Kasei Kogyo Co., Ltd., and the product name of the fabric is called SEMIA. The material is made of ester and activated carbon, and is a non-woven fabric having activated carbon in a sandwich structure. is there. The basis weight is 120 g / m ² S-3.

The members constituting the filter layer main body 10 are preferably those described above. However, the members are not limited thereto, and may be appropriately and arbitrarily determined according to the type and size of fiber waste and dust. Needless to say, it can be changed to a nonwoven fabric.
In addition, polypropylene, polyethylene that does not absorb oil,
Any non-woven fabric made of polyester, nylon, or the like may be used. However, the material is not limited to the non-woven fabric, and may be made of another material. For example, the filter layer main body 10 is formed in a sheet-like and flexible synthetic resin having a large number of small-diameter holes, and is formed in a zigzag shape.
May be configured.

Next, the operation of the oil filter 1 will be described. The oil filter 1 is housed in a filter case 56 as shown in FIG. 36, and a pump 59 is driven as shown in FIG. 35 so that an oily solvent is removed from the solvent tank 58, the drum 53, the oil filter 1, the activated carbon case. Cycle to 57. The fibrous waste and the lump of fiber waste discharged from the drum 53 adhere to the oil filter 1 and the solvent is filtered to flow to the activated carbon case 57. Here, the fibrous debris and lump, fine dust, and the like are attached by the filtration layer main body 10 of the oil filter 1, and the oily solvent is filtered.

Here, the inside of the oil filter 1 is shown in FIG.
As shown in FIG. 2, the pressure is negative, and the solvent flows from the filtration layer main body 10 through the through hole 4 of the body 3. Further, since the inside of the oil filter 1 has a negative pressure, the filtration layer main body 10 cannot be easily removed from the body 2. In addition, since the filter layer main body 10 is bent in a zigzag shape, relatively large dirt accumulates in the zigzag valley portion, and small dirt and debris smaller than that accumulate on the filter layer main body 10 itself to remove the solvent. Filter. When the filter layer main body 10 shown in FIG. 3 is used, the solvent is deodorized by the activated carbon layer 16 and dust is attached.
The oily solvent that has passed through the filter layer main body 10 in this way is one that has been finely filtered.

Here, since relatively large dust is adhered and held in the zigzag-shaped valley portion of the filtration layer main body 10, the dust hardly drops from the oil filter 1, and the pipe is clogged due to the drop of the dust. Can be prevented. Therefore, the operation is not stopped due to a malfunction due to the pressure increase in the filter case 56. Further, since the filtration layer main body 10 is made of a nonwoven fabric, the air permeability or flowability is superior to that of a conventional filter paper made of paper. Therefore, the number of times of washing by the dry cleaning machine 51 can be extended about twice as compared with the related art. Further, the pressure for circulating the solvent in the pipe is smaller than that of paper, and the pump 59 can be smaller than before. Therefore, the cost can be reduced accordingly.

In the replacement of the oil filter 1 in the dry cleaning machine 51, the pressure in the filter case 56 is constantly monitored, and the operation is automatically stopped when the pressure exceeds a certain level. I have. Therefore, in the case of the conventional filter paper made of paper, since the air permeability is lower than in the case of the nonwoven fabric of the present invention, the pressure in the filter case 56 rises faster than in the case of the nonwoven fabric, and the operation is automatically performed. The time to stop is earlier. That is, since the filtration layer main body 10 made of a nonwoven fabric has better air permeability than the conventional paper filter paper, the pressure rise in the filter case 56 is delayed, and the time when the operation is automatically stopped is also delayed. As a result, the number of times of washing becomes larger than before.

As described above, the dry cleaning machine 5
When the oil filter 1 is operated and the oil filter 1 is clogged and replaced, the lid 65 is removed as in the conventional case. Here, conventionally, the paper filter paper of the oil filter 1 is very heavy because it absorbs oil, but in the present invention, the filter layer main body 10 of the oil filter 1 is made of nylon, polyester, polyethylene or the like. Oil is not absorbed, and the filter layer main body 10 is heavier by the weight of the adsorbed dust. Therefore, the oil filter 1 of the present invention is light in weight, and it is very easy to remove the large oil filter 1 which may be held from the filter case 56, and the replacement workability is greatly improved.

After removing the oil filter 1 from the filter case 56, the filter layer main body 10 can be easily removed from the body 2 by removing the planar fasteners 23 and 24 of the filtration layer main body 10 of the oil filter 1. At this time, since the filter layer main body 10 does not absorb oil as described above, the weight is light, and thus the operation of removing the filter layer main body 10 itself is easy. The body 2 from which the filtration layer main body 10 has been removed is washed with water or the like to remove dust or the like adhering to the surface of the body 2 and to make the body 2 clean. Then, the new filtration layer main body 10 is attached to the body portion 3 of the body 2 by the planar fasteners 23, 2 and
4 and the filter layer body 10 is mounted, and the new oil filter 1 is placed in the filter case 56. Then, the operation of the dry cleaning machine 51 can be restarted.

The filtration layer body 10 to which a large amount of dust adheres may be discarded as it is, or may be washed at an office or the like to remove the dust and reused.
Here, when the used filter layer main body 10 is discarded, conventionally, the filter including the metal body and the filter paper is discarded and buried as industrial waste, but in the present invention, the filter layer main body 10 is used. Incineration is possible. In particular, the metal body 2 of the oil filter 1 is reused without being discarded (recycling), and only the filter layer main body 10 is discarded, and incineration is performed. Will be different and very cheap. Therefore, the disposal cost added to the cleaning cost can be reduced,
As a result, the cost of cleaning can be reduced, and ultimately a significant benefit to the consumer. In particular, by recycling the metal body 2 as a main component of the oil filter 1, it is possible to save resources and reduce costs.

Further, unlike the related art, the disposal of the filter layer main body 10 made of a nonwoven fabric is incinerated, so that no landfill site is required, and no environmental pollution and environmental destruction due to landfill are involved. Further, since the filter layer main body 10 is made of a nonwoven fabric, oil is not absorbed unlike the conventional case. Therefore, the filtration layer main body 10 is light, the transportation cost is inexpensive, and since it does not burn oil even during incineration, the pollution of the air is very small.

(Second Embodiment) FIG. 11 is a perspective view of an oil filter 30 according to a second embodiment of the present invention, and FIG. 12 is a sectional view of the oil filter 30. The oil filter 30 cleans lubricating oil circulating inside an engine of a vehicle or the like, and the oil filter 30 is mounted in a container (not shown).

The configuration of the oil filter 30 is basically the same as the configuration of the oil filter 1 of the previous embodiment, although the fluid to be filtered becomes oil itself from an oily solvent to a lubricating oil. Elements that exhibit the same numbers are given the same numbers, and detailed descriptions are omitted. However, the size of the oil filter 30 naturally differs depending on the size of the vehicle engine and the like. The oil filter 30 is made of a metal such as stainless steel or aluminum and has a cylindrical body 2 having an open end, and a body 3 of the body 2 as in the previous embodiment.
And a filtration layer main body 10 made of a nonwoven fabric which is detachably mounted on the outer peripheral surface of the filter. This filtration layer main body 10
It has the same configuration as the previous embodiment shown in FIG. 3 or FIG. However, the coarseness of the filtration layer main body 10 also differs depending on the size of the engine and the like.

The oil filter 30 can be used for a gasoline engine or a diesel engine. In the case of a diesel engine, since light oil is used as fuel, the generated impurities tend to combine to form a large lump.
The zigzag interval may be widened accordingly.

Here, the role of the oil filter 30 in this embodiment is to remove carbon particles in lubricating oil (engine oil) and to remove degraded lubricating oil. The size of the carbon generated by the engine oil is about 1 μm to 10 μm for CC class and CD class lubricating oils, and 0.1 μm or less (70 to 80%) for CF class. The CC class lubricating oil is a lubricating oil used for a diesel engine used under somewhat severe conditions, and has a deposit preventing property, a rust / corrosion preventing property, and a sludge preventing property. The CD-class lubricating oil is a lubricating oil used in a diesel engine used under severe conditions, and has enhanced performance required for a lubricating oil in a diesel engine. The CF class lubricating oil is an off-road diesel engine oil intended for use of high sulfur (0.2%) diesel oil. Note that the above classifications such as the CC class, the CD class, and the CF class are part of the classification of quality standards for automotive lubricating oils set by the American Petroleum Institute (API).

At present, the hole diameter (fineness of the filter paper) of the oil filter of each maker does not change, but the size of the oil filter depends on the amount of oil (the size of the engine). The main filter has a pore size of 20
μm, and a bypass filter having a pore size of 5 μm are generally used. Therefore, the fineness of the filtration layer main body 10 used for the oil filter (main filter, bypass filter) 30 is also used accordingly.

The lubricating oil in the engine flows from the filter layer main body 10 of the oil filter 30 through the opening 31 through the through hole 4 as shown by the arrow in FIG. Filtration layer body 1
At the zigzag-shaped valley portion of 0, large impurities and dust adhere, and further, impurities and dust adhere to the filtration layer main body 10 itself and are filtered. As a result, the lubricating oil is finely filtered by the filtration layer main body 10.

The oil filter 30 is replaced for a certain period of time or when a predetermined traveling distance is reached. In this case, too, only the filter layer main body 10 of the oil filter 30 is replaced with a new filter layer main body 10. . Since the used filter layer main body 10 is made of a nonwoven fabric, the filter layer main body 10 does not absorb oil and adheres only impurities and dust.
Discard. Also, when the filtration layer main body 10 is replaced, the planar fasteners 23 and 24 are replaced in the same manner as in the previous embodiment.
Can be easily attached and detached. Also in the second embodiment, the previous embodiment (the dry cleaning machine 51) is used.
Oil filter 3) as well as oil filter 1)
Thus, only the filtration layer main body 10 is discarded and incinerated without discarding the entirety. As a result, the same effects as in the previous embodiment can be obtained.

In the oil filter 30 used in the engine of a vehicle or the like, the activated carbon layer 1 shown in FIG.
4 may be used, and FIG.
The filter layer main body 10 made of a single non-woven fabric made of a material that does not absorb oil shown in FIG.

(Third Embodiment) Next, an oil filter used for electric discharge machining will be described as a third embodiment. 13 is a perspective view of a main part of an oil filter 90 used for electric discharge machining, FIG. 14 is a cross-sectional view of the oil filter 90, and FIG.
0 respectively shows a vertical sectional view.

Oil filter 9 used for electric discharge machining
Since the entire structure of 0 is well known, a detailed description is omitted.
The internal basic structure will be described. As shown in FIGS. 13 to 15, a large number of through holes 92 are formed in the peripheral surface of a metal-made cylindrical inner cylinder 91, and first and second holes are formed in the outer peripheral surface of the inner cylinder 91. An outer filtration layer main body 10a made of the same material as in the embodiment and bent in a zigzag shape is detachably mounted. Similarly, a large number of through holes 94 are also formed in the peripheral surface of a cylindrical outer cylinder 93 made of metal.
An inner filtration layer main body 10b, which is formed in a zigzag shape similar to the first and second embodiments, is detachably attached to the inner peripheral surface of 3.

The outer cylinder 93 and the inner cylinder 91 are made of stainless steel or aluminum so as to withstand aging.

At the center of the outer cylinder 93 having the inner filtration layer main body 10b mounted on the inner peripheral surface, an inner cylinder 91 having the outer filtration layer main body 10a mounted on the outer side is disposed.
The space between Oa and the inner filtration layer main body 10b is a space. These are arranged in a container (not shown) to constitute an oil filter 90. Oil used for electric discharge machining is fed from one side of the container, and the fed oil enters the space portion, and metal powder and impurities generated during electric discharge machining in the inner filtration layer main body 10b and the outer filtration layer main body 10a. And filter the oil. The outer filtration layer main body 10a and the inner filtration layer main body 10
b constitutes the filtration layer main body 10.

The oil containing metal powder, impurities, etc.
As shown by arrows in FIG. 3 and FIG.
a, while being filtered through the through hole 94 of the outer cylinder 93,
The filtration is performed through the inner filtration layer main body 10 b and the through hole 92 of the inner cylinder 91. Here, the relatively large metal powder generated at the time of electric discharge machining is attached to the outer filtration layer main body 10a and the inner filtration layer main body 10b in the zigzag valley portions,
In addition, fine metal powder and other impurities are adhered by the outer filtration layer main body 10a and the inner filtration layer main body 10b themselves to filter the oil.

The outer filtration layer main body 10a and the inner filtration layer main body 10b are removably mounted on the outer cylinder 93 and the inner cylinder 91, respectively, for example, as in the case of the first embodiment. It has a structure that can be easily attached and detached with a zipper or a synthetic resin thread. Therefore, when a predetermined time comes after performing the electric discharge machining, the outer cylinder 93 and the inner cylinder 91 are taken out from the container of the oil filter 90, and the used outer filtration layer main body 10a and inner filtration layer main body 1 are used.
0b is removed from the outer cylinder 93 and the inner cylinder 91. Then, the new outer filtration layer main body 10a and the new inner filtration layer main body 10b are attached to the outer cylinder 93 and the inner cylinder 91.

The used outer filtration layer main body 10a and inner filtration layer main body 10b to which a large number of metal powders and the like have adhered may be reused after removing the metal powders and the like as in the previous embodiment. In addition, disposal such as incineration may be performed as it is. As described above, the metal outer cylinder 93 and the inner cylinder 91 constituting the oil filter 90 are used again, and therefore, the entire oil filter 90 is not discarded. Absent. Therefore, the main components can be recycled without being naturally destroyed, and the same effects as those of the above embodiment can be obtained.

The outer filtration layer main body 10a and the inner filtration layer main body 10b may use the filtration layer main body 10 having the structure shown in FIG. 3 and are made of a material which does not absorb one layer of oil shown in FIG. You may make it use the filtration layer main body 10 of a nonwoven fabric.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described.
An embodiment will be described. The oil filter 1 for the dry cleaning machine 51 in the above embodiment,
Although the oil filter 30 in the engine of the vehicle and the oil filter 90 used for electric discharge machining have a substantially cylindrical shape, the present embodiment has a substantially flat shape as shown in FIGS. 16 to 18. It is. Further, since the function of an oil filter for filtering an oily solvent or a lubricating oil is the same, the oil filter 33 for the dry cleaning machine 51 will be described. The present invention can be similarly applied to an oil filter used for processing.

That is, the oil filter 33 according to this embodiment includes a rectangular frame 34 made of metal such as aluminum or stainless steel, and a filter layer main body 10 detachably mounted inside the frame 34. It is composed of The main body 10 of the filtration layer is the same as that described in each of the above embodiments, and the main body 10 of the filtration layer shown in FIG. 3 or FIG. 4 is used. On one surface of the frame 34, the filtration layer main body 10 is provided.
A metal net 35 for restricting the positioning or movement of the member is provided. That is, the oil filter 33
Is arranged in a pipe in which a fluid such as an oily solvent or a lubricating oil circulates in one direction, so that a mesh 35 for preventing the movement of the oil filter 33 in the fluid circulation direction is provided on one surface of the frame 34. It has been installed.

FIG. 17 is a perspective view of an oil filter 33 constructed by mounting the filter layer main body 10 in a frame 34.
FIG. 18 shows a sectional view of the oil filter 33.
In addition, although the zigzag density of the filter layer main body 10 is coarse, the zigzag shape having a compact density may be fine.

FIG. 19 is a sectional view showing a state in which the oil filter 33 is detachably mounted in a pipe 37 through which a fluid circulates. The arrows in the figure indicate the direction in which the fluid flows, the flow of the oily solvent in the dry cleaning machine 51, and the flow of the lubricating oil in the engine of the vehicle. In addition, the direction in which oil flows in an oil filter used at the time of electric discharge machining is shown. Here, when the oil filter 33 is installed in the pipe 37, the net 35 is installed with the net 35 facing the direction in which the fluid flows, so that the filtration layer main body 10 is moved by the fluid by the net 35. Regulating.

In FIGS. 16 to 18, the filter layer main body 1 is particularly used.
Although the means for supporting or fixing O to the frame 34 is not shown, the filter layer main body 10 may be supported on the frame 34 by the following means. Elements that perform the same function are assigned the same reference numerals as in the previous drawings, and detailed description is omitted. Further, the filtration layer main body 10 is not shown. That is, in FIG. 20 and FIG.
A flat and rectangular frame-shaped pressing plate 39 is detachably mounted on the other surface of the frame body 34 on the opposite side. Circular holes 41 are formed in both sides 36 of the frame body 34, respectively, and cylindrical locking projections 42 that can be lightly pressed into the holes 41 are integrally formed from the back surfaces of the sides 43 on both sides of the holding plate 39. It protrudes. The locking projection 42 is fixed to the holding plate 39 by welding or other means. The dimensions around the frame 34 and the dimensions around the pressing plate 39 are the same.

Also, as shown in FIG.
The width of the side 43 of the pressing plate 39 is set to be larger than the width of 6, and the side 43 prevents the filtration layer main body 10 from dropping off the frame 34.

When replacing the oil filter 33, remove the oil filter 33 from the pipe 37,
By pulling out the locking projections 42 of the holding plate 39 from the holes 41 of the frame 34, the holding plate 39 can be removed from the frame 34,
The filtration layer main body 10 can be easily removed. Then, as in the case of the previous embodiment, a new filtration layer main body 1 is formed.
0 is mounted in the frame 34, and the locking projections 42 of the holding plate 39 are
Are pressed into the holes 41 of the frame 34, respectively, whereby the filtration layer main body 10 can be supported inside the frame 34.

FIG. 22 shows another example for supporting the filtration layer main body 10 in the frame 34, in which tongues 44 are integrally formed from upper and lower sides 36 of the frame 34, respectively. The tongue pieces 44 are formed on both sides of the upper and lower sides 36, respectively. In addition, although the case where the tongue piece 44 is formed integrally with the frame body 34 is shown, only the tongue piece 44 is separately formed,
It may be fixed to the frame 34 by means such as welding or bolting. Since the filter layer main body 10 is formed of a nonwoven fabric and is flexible, the filter layer main body 10 can be easily loaded into the frame body 34 even if the tongue piece 44 projects inside the frame body 34. can do. Filtration layer body 1
In a state in which the filter layer main body 0 is stored in the frame body 34, the inner surface of the tongue piece 44 comes into contact with the upper and lower portions of the mountain fold 7 of the filter layer main body 10, so that the filter layer main body 10 falls off the frame body 34. Can be prevented. That is, the filter layer main body 10 can be supported in the frame body 34 by the tongue piece 44.

When the filter layer main body 10 is replaced, the filter layer main body 10 can be easily removed from the frame 34.

FIG. 23 shows still another example for supporting the filtration layer main body 10 in the frame 34. The filtration layer main body 10 is supported by a narrow supporting member 46 made of metal such as aluminum or stainless steel. It is intended to be supported inside. That is,
Screw holes 45 are provided above and below the sides 36 on both sides of the frame 34, respectively.
Are screwed, and bolts 4 are provided at both ends of the support piece 46.
8 is formed. The support piece 46 can be fixed to the frame 34 by screwing the bolt 48 into the screw hole 45 of the frame 34 through the insertion hole 47, and the filter layer main body 10 is inserted into the frame 34 by the support piece 46. Can be supported. Also, when the filtration layer main body 10 is replaced, the filtration layer main body 10 can be easily removed from the frame 34 by removing the bolt 48.

In FIG. 23, the number of the support pieces 46 is two, but one or three or more pieces may be used. Although the mounting direction to the frame 34 is set to be horizontal in the illustrated example, one or more support pieces 46 may be mounted in the vertical direction. In addition, since the support piece 46 has a narrow width, the flowability or air permeability is not particularly impaired.

As described above, the dry cleaning machine 51,
The oil filter 33 used in the engine of the vehicle or for electric discharge machining is configured by a rectangular frame-shaped frame body 34 and a zigzag-shaped filtration layer main body 10 made of a nonwoven fabric.
The function of filtering oily solvents, lubricating oils and oils used in electric discharge machining is the same as in the previous embodiment, but the structure is completely different. That is, the oil filters 1, 30, and 90 in the above embodiments have the filter layer main body 10 removably mounted on the cylindrical body 2 in order to adapt to the conventional model. However, in this embodiment, the oil filter 33 is formed not in a cylindrical shape but in a flat shape.

A conventional oil filter uses paper filter paper and therefore has poor fluid circulation or air permeability. Therefore, a large pressure is required to circulate the fluid. In order to withstand, the overall shape of the oil filter including the filter paper and the body is cylindrical. In the present embodiment, since the filtration layer main body 10, which is the fluid filtration part, is made of a nonwoven fabric, the fluidity of the fluid such as an oily solvent or lubricating oil is very good. Therefore, a large pressure is not required to circulate the fluid, and the flat oil filter 33 sufficiently exhibits a filtering function.

As described above, the oil filter 33 for filtering the oily solvent or the lubricating oil can be formed in a flat shape, so that the device on which the oil filter 33 is removably mounted is simplified and small in size. Can be realized. Therefore, the size of the entire apparatus can be reduced, and the cost can be reduced.

In the fourth embodiment,
The same effects as the effects of the first to third embodiments are exerted. In particular, the filtration layer body 10 made of a nonwoven fabric
Although the metal is replaced, the metal frame 34 can be recycled many times, and the same effect as in the previous embodiment can be obtained.

Although the shape of the oil filter 33 is square, it is not limited to a square, and may be, for example, flat and circular. The oil filter 33 may be formed in any shape.

In the above example, the case where the oil filter 33 composed of the frame 34 and the filter layer main body 10 is used upright is described. A means for preventing the filtration layer main body 10 from coming off was required. However, when the oil filter 33 is used sideways, the filter layer main body 1
No means are needed to prevent the 0 from dropping.

FIG. 24 shows the oil filter 3 in such a state.
3 shows a cross-sectional view of the filter layer main body 10 in a frame 34.
Is simply arranged. FIG. 24 shows a state in which the oil filter 33 is installed in the horizontal direction, and the fluid flows downward from above in the figure. In such a case, there is no need for a means for preventing the filtration layer main body 10 from falling off, so that the attachment and detachment of the filtration layer main body 10 become very easy.

In the case of FIG. 24, a bag-shaped nonwoven fabric may be used instead of the filter layer main body 10 bent in a zigzag shape.

In the first to fourth embodiments,
The configuration of the filtration layer main body 10 used in the oil filters 1, 30, 90, and 33 uses the nonwoven fabric shown in FIG. 3 or FIG. 4, but is not limited thereto. Hereinafter, configurations of various nonwoven fabrics constituting the filter layer main body 10 will be described. When the filter layer main body 10 is formed of, for example, two layers of nonwoven fabric, and the upper nonwoven fabric is the first filter layer 11, a nonwoven fabric as shown in FIGS. 25 to 27 may be used.

This first filtration layer 11 is formed by the method shown in FIGS.
As shown in FIG. 3, the upper base material 18 and the lower base material 19 are formed in a substantially hexagonal continuous shape (a so-called honeycomb shape). A thin warp 20 is knitted innumerably between the base 18 and the lower base 19. Then, the concave portion 21 is formed at the inner portion of the hexagon.
The size of the concave portion 21 in the lateral direction is 2 mm to 5 mm.
I use the front and back. The height of the recess 21 is 1 m.
m to around 3 mm. The concave portion 2 of the first filtration layer 11
A large dust such as fiber waste can be held in one. However, the dimensions of the concave portion 21 in the lateral direction and the height are merely examples, and it is needless to say that the concave portion 21 may be appropriately changed according to the size of impurities contained in the solvent or oil. Here, the first filtration layer 11 made of a nonwoven fabric
Is, for example, nylon.

FIGS. 28 and 29 show another example of the first filtration layer 11. In this embodiment, the upper base material 18 on the upper side of the first filter layer 11 (see FIG. 27) constituting the filter layer main body 10 is cut, or cut at the middle part of the warp 20 in the vertical direction. Thus, a first filtration layer 11a is formed. This first filtration layer 11a
In this case, the warp yarn 20 is in a state of standing upright, and in the dry cleaning machine 51, the fiber waste can be sucked and held by the fiber waste being entangled with the warp yarn 20. In the case of the oil filters 1, 30, 90, and 33, relatively large impurities, dust, metal powder, and the like can be attached and held by the first filtration layer 11a.

Although the upper part of the warp 20 of the first filtration layer 11a shown in FIGS. 28 and 29 is erected upward, the upper part of the warp 20 may have a hook shape. In each of FIGS. 25 to 29, the first filtration layer 1
Although the warp yarns 1 and 11a are drawn upright at relatively spaced intervals, they are actually more densely clustered. Moreover, each warp 20 may be entangled.

FIG. 30 shows an example in which the first filtration layer 11a and the second filtration layer 12 constitute the filtration layer main body 10, and FIG. 31 shows the first filtration layer 11 and the second filtration layer 12. This is the case where the filtration layer main body 10 is constituted by the above. FIG. 32 shows a first filtration layer 11a, a second filtration layer 12, and a third filtration layer 1a.
3 is a case where the filtration layer main body 10 composed of three layers is constituted. Here, as the second filtration layer 12, the nonwoven fabric shown in FIG. 3 or FIG. 4 (the filtration layer main body 10 in FIG. 3 and FIG. 4) is used. Also, when activated carbon is mixed into one layer of nonwoven fabric, it may be used as the second filtration layer 12. In the case of FIG. 32, the second filtration layer 12 is a nonwoven fabric containing activated carbon, and the third filtration layer 13 is a nonwoven fabric containing no activated carbon. Further, in FIG. 32, the upper nonwoven fabric may be used as the first filtration layer 11 shown in FIG.

Here, the third filtration layer 1 of the filtration layer main body 10 is used.
3 uses, for example, polypropylene as a material. The basis weight of the third filtration layer 13 is 40 g / m
^{About 2} things are used. The mesh of the third filtration layer 13 is fine, and fine dust in the solvent, fine metal powder, impurities, and the like are attached to the solvent so that the solvent is filtered finely.

In the case of FIG. 32, as the second filtration layer 12, for example, a material manufactured by Asahi Kasei Kogyo Co., Ltd. and having a trade name of SEMIA is used. The material is a non-woven fabric made of an ester and activated carbon and having a sandwich structure of activated carbon. The basis weight is 120 g / m ² S
−3. The third filtration layer 13 is a nonwoven fabric manufactured by Asahi Kasei Kogyo Co., Ltd. and having a brand name of ELTAS. The material is a 100% ester-bonded spunbond nonwoven fabric (with a basis weight of 40 g / m ² E0104).
0) or a 100% polypropylene spunbond nonwoven fabric (having a basis weight of 40 g / m ² P03040).

FIG. 33 shows the first filter layer 13 made of the same material as the third filter layer 13 and having a substantially honeycomb structure (honeycomb structure).
3 is an enlarged perspective view of a main part when the filtration layer 11 of FIG. Further, the material (the honeycomb structure) may be similarly formed using the material of the second filtration layer 12. In addition, the first filtration layer 11 shown in FIG.
The shape of the beehive can be arbitrarily changed, so that it can be easily and detachably attached to a cylindrical body or the like.

Further, the filtration layer main body 10 in each of the above embodiments may be constituted by only one of the filtration layers 11 shown in FIG.

Thus, the oil filters 1, 30,
When the filter layer main body 10 constituting 90 and 33 is formed of a nonwoven fabric that does not absorb oil, it may be formed of only one layer, or may be formed of two or three layers. The type of the nonwoven fabric is not particularly limited, and any nonwoven fabric may be used as long as it can filter fibrous dust, debris, impurities, metal powder, and the like contained in an oily solvent or lubricating oil.

The members constituting the filtration layer main body 10 are preferably those described above, but are not limited thereto, and may be appropriately and arbitrarily determined according to the type and size of fiber waste and dust. Needless to say, it can be changed to

If the filtration layer of the filtration layer main body 10 is too fine, the use of a filtration layer that is too fine will deteriorate the fluid flow. However, a filtration layer that is coarser to some extent may be used. The reason for this is that the dust becomes finer due to the attachment of dust and the like during use, and it can be provided with a function as a filtration layer having a distribution property. Therefore, as a constituent of the filtration layer main body 10, the roughness of the eyes is not particularly limited, and a single filtration layer is sufficient for the filtration function.

When the filtration layer main body 10 is composed of two layers, the cost of the filtration layer main body 10 can be made lower than in the case of three layers. Of course, if the filtration layer main body 10 is composed of only one of the filtration layers, the cost can be further reduced.

By the way, the oil filters 1, 3
As a material of the filtration layer main body 10 used for 0, 90, and 33, a nonwoven fabric is used so as not to absorb oil, and a nonwoven fabric (a first filtration layer 11, a second filtration layer 12, a third filtration layer) is used. As a material of the layer 13), any of nylon, polyester, polypropylene and the like may be used. Further, the material of the filtration layer main body 10 is not limited to a nonwoven fabric. For example, as another material that does not absorb oil, the filtration layer main body 10 may be made of a synthetic resin having flexibility.

In addition, 1 made of a non-woven fabric which does not absorb oil
It is also included in the scope of the present invention to constitute the filtration layer main body 10 of the oil filters 1, 30, 90, and 33 with the filtration layers. In addition, the type of the nonwoven fabric of the filtration layer main body 10 in the case of one layer is not limited to the type described in each of the above embodiments, and may be appropriately set or changed according to the size of dust and impurities floating in the fluid. This is also included in the scope of the present invention.

In each of the above embodiments, silica gel may be mixed in the filter layer main body 10 using activated carbon (activated carbon layer 16) instead of the activated carbon of the third filtration layer 13. . Further, the filtration layer body 10
Is composed of a single filtration layer, silica gel may be mixed into the filtration layer. Of course, silica gel may be mixed into the filter layer main body 10 together with activated carbon. Further, even when the filtration layer main body 10 is composed of two filtration layers, silica gel is mixed into two or any one of the filtration layers to form a dry cleaning solvent, a vehicle engine oil, an electric discharge machining. May be made to absorb the water contained in the oil.

Therefore, by mixing silica gel into the filter layer main body 10, dust, debris,
At the same time as filtering impurities, metal powder and the like, it is also possible to remove water contained in the fluid.

Incidentally, in the oil filter 1 according to the first embodiment, a zigzag filter layer main body 10 in which one layer or a plurality of nonwoven fabrics are variously combined is detachably mounted on the outer peripheral surface of the body 2. A nonwoven fabric that does not absorb oil and has a honeycomb shape as shown in FIG. 33 may be detachably mounted between the inner peripheral surface of the filter layer main body 10 and the outer peripheral surface of the body 2. That is, although a large number of through holes 4 are formed in the body 3 of the body 2, the opening ratio is low when the number of through holes 4 is small or when the hole diameter is small, or when the filtration layer main body is used. When a large amount of dust, fiber waste, and the like adhere to the surface 10, the flowability deteriorates, and the pressure loss sometimes deteriorates.

Therefore, the nonwoven fabric shown in FIG. 33 is detachably attached to the outer peripheral surface of the body 2 in a sheet shape, and the filter layer main body 10 is detachably attached to the outer peripheral surface thereof. A space is formed between the filter layer 2 and the filter 2 so that even if the opening ratio of the through hole 4 of the body 2 is low, or even if a large amount of dust or the like adheres to the filter layer main body 10, flowability is maintained and pressure loss is reduced There is no loss.

Further, a non-woven fabric as shown in FIG. 33 may be formed in a sandwich structure above and below the filter layer main body 10.

Note that, for the same reason, FIGS.
33, a honeycomb (sheet-shaped) non-woven fabric shown in FIG. 33 may be used for the oil filter 90 used for electric discharge machining. That is, the inner cylinder 91
Between the outer peripheral surface of the inner filtration layer body 10b and the outer cylinder 93
3 between the inner peripheral surface of the body and the outer filtration layer main body 10a.
Or a nonwoven fabric may be attached to the outer peripheral surface and the inner peripheral surface of the inner filtration layer main body 10b and the outer filtration layer main body 10a to form a sandwich structure.

Thus, even when the opening ratio of the through holes 92 and 94 between the inner cylinder 91 and the outer cylinder 93 is low, or when a large amount of metal powder and impurities adhere to the filtration layer main body 10, the pressure loss is not impaired. Not something.

[0113]

According to the present invention, for example, in a dry cleaning machine, since the filter layer main body of the filter does not absorb the oily solvent, the filter does not become heavy as in the prior art, and the filter of a certain size is replaced. The work becomes very easy, and the work of replacing the filter is dramatically improved. In addition, since the non-woven filter layer body has better air permeability than the conventional paper filter paper, the pressure rise in the filter case is delayed, and the time when the operation is automatically stopped is also delayed. The number of times is about twice as large as that of the related art.

Further, when the used filter layer main body is discarded, the filter including the metal body and the filter paper is conventionally discarded and buried as industrial waste, but in the present invention, the filter layer main body is discarded. Incineration is possible. In particular, the metal body of the filter is reused without being discarded (recycling), and only the filter layer body is discarded, and incineration is performed. Will be cheaper. Therefore, the disposal cost added to the cleaning cost can be reduced, and as a result, the cleaning cost can be reduced, and ultimately a great benefit can be given to the consumer. Further, unlike the conventional case, the disposal of the filtration layer main body made of a nonwoven fabric is incinerated, so that no landfill site is required, and no environmental pollution or environmental destruction occurs. Furthermore, since the filter layer main body is made of a nonwoven fabric, it does not absorb oil unlike the conventional case. Therefore, the filter layer main body is light, the transportation cost is low, and the oil is not burned during incineration, so that the air pollution is very low. In particular, by recycling metal bodies that are the main components of the filter, resources can be saved and costs can be reduced.

When the filter layer main body made of a nonwoven fabric is applied to an oil filter of a vehicle or the like, the oil filter itself is not discarded, but the body is reused as it is, and the filter layer main body is used. Since only replacement is required, the cost can be reduced, and the filtration layer main body can be incinerated, unlike the case of landfill, and does not involve environmental pollution or environmental destruction. In particular, by recycling metal bodies as main components of the oil filter, resources can be saved and costs can be reduced.

In particular, when the filter layer of the filter layer main body is formed as a single layer, it is more advantageous in terms of cost than when a plurality of layers are provided. In addition, the cost can be reduced to about て as compared with the case of two layers.

Further, since the filter layer main body is made of a nonwoven fabric, the flowability or air permeability of the fluid is superior to that of the conventional paper filter paper, so that the pressure for circulating the fluid is increased. There is no need, and the structure of the oil filter does not need to be formed in a cylindrical shape as in the related art. Therefore, the structure of the oil filter can be made flat, so that the device on which the oil filter is mounted can be reduced in size and cost can be reduced. In particular, the frame can be recycled, and the replacement is performed only on the main body of the filtration layer. Thus, resource saving can be achieved in the same manner as described above.

Also, in the case of an oil filter used for electric discharge machining, only the outer filter layer main body and the inner filter layer main body are incinerated or discarded, and the outer cylinder which is another main metal component is formed. The inner cylinder and the inner cylinder are reused for recycling, and can prevent natural destruction and environmental pollution. Further, by removing the metal powder adhering to the filtration layer main body, the filtration layer main body can be used again.

Further, by mixing silica gel in the filter layer main body, moisture mixed in dirt and oily fluid can be absorbed by silica gel, and moisture can be removed from oily fluid together with dirt, fiber debris and metal powder. Can also be removed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an oil filter used in a dry cleaning machine according to an embodiment of the present invention.

FIG. 2 is a perspective view of an oil filter used in the dry cleaning machine according to the embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a main part of a filtration layer main body of an oil filter used in the dry cleaning machine according to the embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view of a main part of another example of the filtration layer main body of the oil filter used in the dry cleaning machine according to the embodiment of the present invention.

FIG. 5A is a main part wall view of a filtration layer main body of an oil filter used in a dry cleaning machine according to an embodiment of the present invention. (B) is a sectional view of a main part of a filtration layer main body of an oil filter used in the dry cleaning machine according to the embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of an oil filter used in the dry cleaning machine according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a direction in which fluid flows in a filtration layer main body of an oil filter used in the dry cleaning machine according to the embodiment of the present invention.

FIG. 8 is an explanatory view showing a state where both ends of the filtration layer main body according to the embodiment of the present invention are joined.

FIG. 9 is an enlarged sectional view of a main part showing a state where both ends of a filtration layer main body according to the embodiment of the present invention are joined.

FIG. 10 is an enlarged sectional view of a main part of another example showing a state where both ends of the filtration layer main body according to the embodiment of the present invention are joined.

FIG. 11 is a perspective view of an oil filter used in an engine of a vehicle according to a second embodiment of the present invention.

FIG. 12 is a sectional view of an oil filter used in an engine according to a second embodiment of the present invention.

FIG. 13 is an essential part perspective view showing a basic structure of an oil filter used for electric discharge machining according to a third embodiment of the present invention.

FIG. 14 is a cross-sectional view of an oil filter used for electric discharge machining according to a third embodiment of the present invention.

FIG. 15 is a vertical sectional view of a main part of an oil filter used for electric discharge machining according to a third embodiment of the present invention.

FIG. 16 is an exploded perspective view of an oil filter according to a fourth embodiment of the present invention.

FIG. 17 is a perspective view of an oil filter according to a fourth embodiment of the present invention.

FIG. 18 is a sectional view of an oil filter according to a fourth embodiment of the present invention.

FIG. 19 is a cross-sectional view showing a state where an oil filter according to a fourth embodiment of the present invention is mounted in a pipe.

FIG. 20 is an exploded perspective view of an oil filter according to a fourth embodiment of the present invention provided with a means for preventing a filtration layer main body from falling off.

FIG. 21 is an enlarged sectional view of an oil filter according to a fourth embodiment of the present invention provided with a means for preventing a filtration layer main body from falling off.

FIG. 22 is a perspective view of an oil filter showing another example provided with a means for preventing the filtration layer main body from falling off according to the fourth embodiment of the present invention.

FIG. 23 is an exploded perspective view of an oil filter showing still another example provided with a means for preventing a filtration layer main body from falling off according to a fourth embodiment of the present invention.

FIG. 24 is a cross-sectional view of an oil filter according to a fourth embodiment of the present invention when used in a lateral direction.

FIG. 25 is an enlarged plan view of a main part of the first filtration layer of the filtration layer main body of the present invention.

FIG. 26 is an enlarged perspective view of a main part of a first filtration layer of the filtration layer main body of the present invention.

FIG. 27 is an enlarged sectional view of a main part of a first filtration layer of the filtration layer main body of the present invention.

FIG. 28 is an enlarged sectional view of a main part of another example of the first filtration layer of the filtration layer main body of the present invention.

FIG. 29 is an enlarged perspective view of a main part of another example of the first filtration layer of the filtration layer main body of the present invention.

FIG. 30 is an enlarged sectional view of a main part when the filtration layer body of the present invention has two layers.

FIG. 31 is an enlarged cross-sectional view of a main part of another example in which the number of filtration layer bodies of the present invention is two.

FIG. 32 is an enlarged cross-sectional view of a main part in the case where the filtration layer body of the present invention has three layers.

FIG. 33 is an enlarged perspective view of a main part in the case where the structure of the filtration layer main body of the present invention has a substantially honeycomb shape.

FIG. 34 is a front view of the dry cleaning machine.

FIG. 35 is a schematic block diagram showing a flow of a solvent in the dry cleaning machine.

FIG. 36 is an exploded perspective view showing a stored state of a filter of the dry cleaning machine.

FIG. 37 is a perspective view of a filter used in a conventional dry cleaning machine.

FIG. 38 is a side view of a body of a filter used in a conventional dry cleaning machine.

FIG. 39 is a cross-sectional view of a filter used in a conventional dry cleaning machine.

FIG. 40 is a schematic block diagram of an engine in which an oil filter is used.

FIG. 41 is a perspective view of an oil filter used in an engine of a conventional vehicle or the like.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 oil filter 2 body 4 flow hole 10 filtration layer main body 10a outer filtration layer main body 10b inner filtration layer main body 11 first filtration layer 16 activated carbon layer 19 lower base ground 20 warp (projection) 30 oil filter 33 oil filter 34 frame 35 Netting 39 Holding plate 51 Dry cleaning machine 90 Oil filter 91 Inner tube 92 Through hole 93 Outer tube 94 Through hole

Claims (13)

[Claims] 1. A cylindrical body (2) having a large number of holes (4), and a filtration layer mounted on the outer peripheral surface of the body (2) and filtering an oily fluid containing dust and impurities. An oil filter for filtering an oily fluid through the filtration layer and the hole (4) of the body (2), wherein the filtration layer for filtering the oily fluid is a filtration layer body (10);
The material of the filter layer main body (10) is made of a material that does not absorb oil, and the whole is bent substantially zigzag, and the filter layer main body (10) is detachably mounted on the body (2). An oil filter, characterized in that: 2. The filter layer, comprising: a frame (34); and a filter layer main body (10) mounted inside the frame (34) and filtering an oily fluid containing dust and impurities. The material of the main body (10) is made of a material that does not absorb oil, and the whole is bent substantially in a zigzag shape, and the filter layer main body (10) is detachably mounted in the frame (34). An oil filter characterized by the following. 3. An oil filter used for electric discharge machining and filtering oil containing metal powder and impurities generated at the time of electric discharge machining, wherein the cylindrical outer cylinder has a large number of holes (94). (93), an inner cylinder (91) which is disposed at a central portion of the outer cylinder (93) substantially concentrically with the outer cylinder (93), and has a large number of holes (92) formed therein. An outer filtration layer main body (10a) bent in a zigzag shape is disposed on the inner peripheral surface of the tube (93), and an inner zigzag bent inner surface is formed on the outer peripheral surface of the inner tube (91). A filter layer main body (10b) is provided, and the outer filter layer main body (10a) and the inner filter layer main body (10b) are made of a material that does not absorb oil, and are attached to the outer cylinder (93) and the inner cylinder (91). An oil filter characterized by being detachably mounted. 4. The filter bed body (10) is made of activated carbon (1).
The oil filter according to any one of claims 1 to 3, wherein 6) is mixed. 5. The filter layer main body (10) comprises one or more layers.
The oil filter according to claim 4. 6. An oil filter (1) formed according to any one of claims 1, 2, 4, and 5.
Is an oil filter used as an oil filter (1) for removing fiber waste and the like in a dry cleaning machine (51). 7. An oil filter (3) formed according to any one of claims 1, 2, 4, and 5 above.
0) is an oil filter (3) in an engine of a vehicle or the like.
An oil filter used as 0). 8. The oil filter according to claim 1, wherein the filtration layer main body (10) is made of a nonwoven fabric. 9. The oil according to claim 8, wherein the first filter layer (11) when the filter layer body (10) has a plurality of layers has a double Russell structure and a substantially honeycomb shape. filter. 10. The first filter layer (11) in a case where the filter layer body (10) is composed of a plurality of layers, has a number of projections (20) standing upright from the lower base (19). The oil filter according to any one of claims 1 to 8, wherein 11. Means (35) and (3) for preventing the filtration layer main body (10) from falling off on the opening surfaces on both sides of the frame (34).
9. The method according to claim 2, further comprising:
The oil filter according to claim 9. 12. The filter layer main body (10) has a substantially honeycomb structure.
The oil filter according to any one of the above. 13. The oil filter according to claim 1, wherein silica gel that absorbs moisture is mixed in the filter layer main body (10).