JP2002119806A - Combination type filter for oil treatment and filter body thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the manufacture of a filter body of a by-pass element, to decrease a connection member of a filter body of a full flow element thereto and to simplify the connection work in a cartridge type combination type filter for oil treatment for filtering lubricating oil in an internal combustion engine. SOLUTION: The combination type filter for oil treatment is formed by using the filter body, which is obtained by forming a block like filter media having a through hole and a liquid retaining hole by integral molding, for the filter body of the by-pass element, connecting the filter body to a filtration oil introducing pipe body communicated with the through hole and the liquid retaining hole and having an inside pipe and an outside pipe and connecting to the filter body of the full flow element using the structural member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil treatment combination filter for filtering lubricating oil of, for example, an internal combustion engine of an automobile and a filter body thereof.

[0002]

2. Description of the Related Art Lubricating oil is used in the fields of automobiles, machine manufacturing, machining, machine tools, and ships, and the oil is circulated and used. At that time, an oil treatment filter is provided in the middle of the circulation circuit to filter the oil.

For example, in the case of an oil filter for an internal combustion engine of an automatic engineer or the like, a cartridge type oil treatment filter having a structure in which a filter medium and a filter made of a supporting member are incorporated in a steel case is often used. In addition, used oil discharged from an internal combustion engine is filtered and returned to the internal combustion engine, and is incorporated as an essential component in an oil circulation circuit. In particular, it plays an important role in removing fine contaminants (fine dirt particles) generated mainly in a high-temperature engine portion and for smooth operation of the engine. By the way, in recent years, improvement of fuel economy, NOx
Engines are being improved to meet the demands such as reducing the emission of (nitrogen oxides) into the air.
The particle size of carbonaceous contaminants, which are a type of minute contaminants contained in oil, has also become smaller, and filters have been required to be improved to improve their filtration performance.

[0004] As a cartridge type oil treatment filter for improving filtration performance, a main filter is used.
There is a combination type filter in which a so-called full flow element is combined with a so-called bypass element, which is an auxiliary filter. The filtering element of the full flow element can remove a large amount of oil and secure the amount of oil circulating by filtering a large amount of oil even if the filtering efficiency is slightly lowered. Even if the filtration amount is small, it is designed so that the trapping efficiency of the fine particles is high and the filtration efficiency is enhanced. Since the latter is intended to capture micro-contaminants, basically using a densely packed filtration layer, the flow rate of oil is small, and naturally the amount of oil that can be filtered is reduced, and the auxiliary Limited to usage. Such a cartridge-type combination type filter is, for example, in the case of a large amount of oil contamination due to use, such as a diesel engine, when fine particles are removed by a filter element of a bypass element. Since the clogging due to the removed portion can be prevented, the function of the filter of the full flow element, which plays a major role of the filter, can be maintained for a long time, and there is an advantage that the service life of the filter can be extended.

By the way, the outlet of the filtered oil of the full flow element and the bypass element of the cartridge type combination filter is separate, and the oil filtered by the cleaner bypass element is returned to the oil pan (oil reservoir). After that, it is supplied to the engine cylinder from here, so the structure of the cartridge type combination type filter is not only that there is a full flow element and a bypass element, but also how to combine both, However, the number of members for connecting the respective elements is increased in order to separate the components, and the assembling process is complicated. For example, there is a problem that the cost of the product increases. For example, as shown in FIG. 1, a conventionally known combination filter for oil treatment has an opening 1a at the center by caulking the other end and opening at one end, and the periphery of the opening. Then, there is provided a steel cylindrical case 1 to which a steel mounting plate 1b having an annular groove on the outer peripheral edge is mounted, and inside the mounting plate 1b, filtered oil is sent to the center communicating with the opening 1a. In addition to the pipe 1c, a steel closing plate 1e provided with introduction holes 1d, 1d,... At equal intervals around the filtered oil delivery pipe 1c is provided. A gasket 1f made of rubber as a packing is detachably provided in the annular groove, and a planar plate-shaped bracket (not shown) attached to the internal combustion engine of the automobile, which communicates with the internal combustion engine via an oil reservoir.
A double tube protruding from the inner tube 1g-1 for the flow passage body,
By inserting into the filtered oil delivery pipe 1c a filtered oil introduction pipe 1g having an outer pipe 1g-2 for bypass and having a tip of the inner pipe protruding from the outer pipe, the gasket 1f closes the filter oil. The space between the plate and the flat plate-shaped bracket is sealed so that oil delivered from an oil delivery hole to be filtered, which is provided around the filtered oil delivery tube 1c of the bracket, does not leak.

[0006] 2 is a filter element of the bypass element,
The generally donut-shaped steel end plates 2a and 2b having an insertion hole formed by bulging the center of the disk face each other inwardly. As shown in FIGS. 1 and 2, a flange provided at the other end of the resin pipe 2c is joined with an organic adhesive 2d, and a rubber packing 2e is provided around the outer periphery of the central bulge. Join by 2d. Further, a donut-shaped filter paper is laminated on the outside of the resin pipe 2c to form a filter paper layer 2f, which is further fixed around the resin pipe 2c with a plurality of steel fasteners 2g provided at equal intervals. Then, the outer tube 1g-2 of the filtered oil introduction tube 1g is inserted into the insertion hole of the central bulge portion of the one end side end plate 2a without any gap, and the rubber packing 2h is inserted outside the inner tube 1g-1. One end of the resin pipe 2c is fitted in a liquid-tight manner through the intermediary of the resin pipe 2c, and the two are connected to communicate with each other. Reference numeral 3 denotes a filter element of a full flow element, which comprises a support member 3a and a filter medium 3f. The supporting member 3a is a substantially donut-shaped steel end plate 3c having a through hole formed by indenting the center of the disk inside each other at both ends of a steel punched metal cylinder 3b having a large number of through holes. ,
3d are attached, and these end plates 3
A fold-shaped filter paper 3f is wound around a cylindrical body 3b between c and 3d.

As shown in FIG. 1, reference numeral 5 denotes a steel leaf spring provided inside the other end of the case 1, which is formed in an inverted flat dish shape, and has a large number of cut grooves on its peripheral side. (Not shown) and a central bottom plate 5a
Is formed to be slightly larger than the size to cover the opening at the other end of the cylindrical body 3b of the support member 3, and a through-tube portion 5b is formed at the center thereof so as to protrude inward from the dish-shaped concave portion. 6
Is a steel relief valve composed of a valve body and the like attached to a through hole of an end plate on the other end side.
b, and when the pressure becomes equal to or higher than a predetermined pressure, the valve body is moved to allow oil to flow into the cylindrical body 3b. In the filter body 3 of the full flow element, the bulging portion of the end plate 2b at the other end is fitted into the through hole of the end plate 3c at the one end, and the annular projection on the peripheral edge of the through hole contacts the rubber packing 2e. Touched. As shown in FIG. 1, reference numeral 7 denotes a dish-shaped valve body made of a flexible material such as rubber. A peripheral wall 7a is formed at the center of the valve body so as to fit the filtration oil delivery pipe body 1c with a margin. The end plate 2a is in contact with the end surface, and the distal valve body 7b provided on the outer peripheral wall of the peripheral wall 7a covers the introduction holes 1d, 1d,. The leading edge is pressed by the elasticity of the material.

In order to assemble such a structure, first, as shown in FIG.
Is housed in the case body before the mounting plate 1a is mounted,
Then, the filter body 3 of the full flow element is placed at a predetermined position of the leaf spring 5 in the case 1, and the filter body 2 of the bypass element is further fitted with a rubber packing 2 e provided outside the bulge at the other end. Is mounted so as to abut on the annular projection on the periphery of the through hole of the one end side end plate 2b. After that, after the valve element 7 is mounted on the end plate 2a on one end side, the previously joined mounting plate b and closing plate 1e are integrated with the closing plate 1e inside, and the filtered oil is sent out. The tube 1c is inserted into the mounting hole of the valve body 7, and is positioned so as to fit into the bulging portion of the end plate 2a. The mounting plate 1b is mounted on the periphery of the opening of the case 1 by caulking. Can be As a result, the filter bodies 2 and 3 are housed in the case 1, and are closed via the leaf spring 5 and the valve body 7.
e. Next, the filtered oil introduction pipe 1g is inserted into the filtered oil delivery pipe 1c, and the inner pipe 1g-1 is fitted to the tip of the resin pipe 2c of the filter 2 in a liquid-tight manner via the rubber packing 2h. At the same time, the outer tube 1g-2 is fitted in the insertion hole of the end plate 2a in a close state.

[0009] The combination type filter for oil treatment obtained in the above-described manner is provided in the introduction hole 1.
The oil introduced from d, 1d,... deforms the valve body 7b at that pressure and flows in, and is processed by the filter body 2. The filtered oil is filtered by the outer pipe 1g of the filtered oil introduction pipe 1g.
2, and processed by the filter 3, and the filtered oil flows through the cylindrical body 3 b and flows through the resin pipe 2.
c, and is sent out to the inner pipe 1g-1 of the filtered oil introduction pipe 1g. At that time, in the filter bodies 2 and 3, the fine filter material is used for the former and the coarse filter material is used for the latter, so that the former can capture fine particles and the latter can process the main oil. . Such a cartridge-type combination filter for oil treatment is shown in FIG.
In the case where the filter body 2 is not provided, only the filter body 3 is provided, and the filter oil introduction pipe 1g is used to a certain extent in the same manner as a normal type cartridge type oil treatment filter having a single pipe, It is necessary to replace the filter with a new one because the filtration capacity of the filter decreases. At that time, these used cartridge type oil treatment filters were buried and disposed of together with the attached oil and contaminants, or were discarded after being incinerated.

[0010]

SUMMARY OF THE INVENTION A cartridge type oil treatment combination filter uses a two-element filter and is intended to improve the efficiency of removing fine particles while maintaining a normal oil filtering function. Therefore, it is necessary to combine the filter elements of the two elements. However, in the above-mentioned conventional combination filter for oil treatment, as shown in FIG. Packing 2e,
Two members of 2h and an adhesive 2d at two places are required.
Further, the resin pipe 2c is not flexible, and the inner pipe 1g of the filtered oil introducing pipe 1g is provided via a rubber packing 2h as a separate member.
There is also a problem that the operation of fitting the g-1 is troublesome. Furthermore, the filter paper layer 2f of the filter body 2 not only has the trouble of laminating the filter paper or fixing it with the fastener 2g, but also the filter paper layer 2f has the filter paper densely laminated and the amount of oil passing therethrough. In addition, there is a problem that the efficiency of capturing contaminants is not good.

Further, if the cartridge type oil treatment filter is landfilled by disposal, for example, the number of automobiles is large and the number of discarded cartridge type oil treatment filters is enormous.
The landfill requires a lot of land, which not only changes the selected land and the surrounding natural environment, but also allows the oil in the landfill to penetrate into the surrounding area, harm the environment, and pose a problem in terms of environmental protection. There is. There are certain restrictions on the landfill. On the other hand, in order to perform incineration, it is necessary to cut the cartridge type oil treatment filter and make it fine, or to incinerate it in a high-temperature furnace as it is, and after incineration, some steel recovery is also performed However, there is a problem in that it is deteriorated by oxidation, is disadvantageous in terms of strength and durability as a material to be reused, and is wasteful in terms of resource protection. In order to solve such a problem, recently, an attempt has been made to cut a steel case portion of a cartridge type oil treatment filter and separate the case portion, a filter body and other members inside the case portion to facilitate the treatment. However, even in this case, there is a filter body 2 in which a filter medium such as filter paper is wound around a resin pipe 2c, but the resin pipe 2c is made of metal together with both end plates 2a, 2b. On the other hand, the filter body 3 is formed by winding a filter material such as a fold-shaped filter paper around a cylindrical support made of punched metal, both ends of which are sandwiched by metal end plates. This is a structure in which the constituent members of the relief valve are integrated, and the integrated member is pressed and held inside the case by a spring member 5 of another member. In the treatment, the case is cut, the filter bodies 2 and 3 are separated, and further, the spring member 5 and the filter body 3 are separated, and the filter bodies 2 and 3 are incinerated as described above. The support, the relief valve, the end plate and the like remain as a residue, and eventually, a part of the metal member of the case and the spring member can be recovered, but this does not essentially solve the above problem. In order to avoid this, if it is disassembled and processed into a metal member and a combustible material such as filter paper, the former can be collected and reused, and the latter can be incinerated, and the above-mentioned problems can be solved. However, there is another problem that it requires labor for its disassembly.

A first object of the present invention is to reduce or eliminate the number of components and materials such as an adhesive used for a connection portion between a bypass element and a full flow element, and to provide a combination type filter for oil treatment which is easy to manufacture and assemble, and its combination. It is to provide a filter. A second object of the present invention is to provide a combination type filter for oil treatment that can easily connect the filter of the bypass element and the filter of the full flow element, and to provide the filter. A third object of the present invention is to provide a combination type filter for oil treatment that can smoothly connect a filter of a bypass element and a main body of an oil use body, and a filter thereof. A fourth object of the present invention is to provide a combination filter for oil treatment provided with a bypass element having a filter capable of increasing the amount of oil treatment and having a high efficiency of capturing minute contaminants, and a filter thereof. It is in. A fifth object of the present invention is to provide a combination type filter for oil treatment that can reduce the manufacturing cost and a filter body thereof. A sixth object of the present invention is to provide a combination type filter for oil treatment that can increase the ratio of recyclable parts of constituent members and facilitate disposal of discarded parts, and a filter body thereof. is there.
A seventh object of the present invention is to provide an oil treatment which does not require land for land reclamation, can be easily incinerated, and has no residue other than ash, thereby protecting the environment and protecting resources. An object of the present invention is to provide a combination filter and a filter body thereof.

[0013]

According to the present invention, in order to solve the above-mentioned problems, (1) an oil is introduced through a flow passage having a bypass which constitutes one of an oil circulation circuit, directly or through an oil reservoir. An oil processing combination filter that constitutes the other of the oil circulation circuit and that is connected to an oil use body that sends out used oil after use. A case having, at one end, an inlet communicating with a delivery section for delivering the oil of the oil-using body, and a flow passage formed at one end of a through-hole provided in a block-shaped filter material integrally formed with the filter material. The end of the main body is communicated with each other, and each of the plurality of blind holes provided on one end side is connected to the end opening of the bypass and the block-shaped filtration is performed. A first filtering body provided in the case so as to communicate the introduction port with the outside of the filter, and a filter member on a peripheral side of the cylindrical body of a supporting member having a cylindrical body having both ends opened and having a through hole. The one end opening of the cylindrical body is
A second filter provided in the case so as to communicate with the through-hole of the filter body of the above, and to communicate the introduction port to the outside of the filter medium, and one end of the first filter to the case. A spring member provided inside the other end of the case opposite to the other end of the support member of the second filter so as to be pressed inward on one end side, and an oil-permeable spring member; A valve seat provided at the other end side opening of the cylindrical body, a relief valve having a valve body, and a spring for pressing the valve body against the valve seat; In the filter of (1), delivery to the end opening of the bypass is performed mainly by the stored liquid in the liquid reservoir through the block-shaped filter. In the second filter, the through-hole is passed through the filter. Through one end of the cylindrical body to the opening side. Discharged to the end opening of the main body of the flow passage through the communicating portion with the through hole, and when the second filter has a predetermined pressure due to clogging of the filter medium, the relief valve is operated. Combination type for oil treatment in which oil is introduced into the cylindrical body from the other end opening side and is sent from the one end side opening side to the end opening of the main body of the flow passage through the communicating part with the through hole. It provides a filter. Further, the present invention provides (2) an oil treatment combination according to (1) above, wherein the first filter is a molded body formed by using at least one of pressure and heating by using a filter having a predetermined shape. Type filter,
(3) The combination filter for oil treatment according to (1) above, wherein the first filter body is a formed body formed by forming a fiber aggregate of a filtering material through a net having a predetermined shape.
(4) The communication between the through-hole of the first filter and the tubular body of the second filter is performed by the other of the fitting body that fits into the through-hole formed in the support member of the second filter. The combination filter for oil treatment according to any one of the above (1) to (3), in which the connecting member is unnecessary, (5), and the filter material of the first filter body mainly composed of a cellulose fiber or a synthetic fiber. The combination type filter for oil treatment according to any one of the above (1) to (4), wherein the filter medium of the first filter body contains a porous adsorbent and / or a basic adsorbent. (5) The combination filter for oil treatment according to any of (5), (7), the combination filter for oil treatment according to (6) above, wherein the porous adsorbent is sepiolite, (8), (1) to (7) above. The first filter body and At least a first second filter body
To provide a filter of a combination filter for oil treatment, which is a filter of (1). The first filter may be a filter of a bypass element, and the second filter may be a filter of a full flow element.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2 denote the same components. As shown in FIG. 3, reference numeral 2 'denotes a filter element of a bypass element. As shown in FIGS. 3 and 4, the filter element 2' is formed of a flat cylindrical block-shaped filter medium 2'f in which the filter medium is integrally formed. A through-hole 2'f-1 is provided in the center, and a plurality of blind holes 2'f-2, 2 which are slanted so as to approach each other from the inside toward one end side (upward in the figure). is provided. Further, the center of the plate-like body is swelled, and an end plate 2'a provided with an insertion hole at the front end surface of the swelling portion is attached to the block-shaped filter medium 2'f. One end face is in contact with the swelling portion so that the liquid reservoir hole is located. In addition, the end plate 2'a
Can be referred to as the filter 2 '(including those which are easily detachable if pulled easily), but can be referred to as the filter 2' when the end plate 2'a is separated. . The filter material of the filter body 2 'is made of a material arbitrarily selected from cellulosic fibers such as wood pulp and linter pulp, synthetic fibers such as polyester and nylon, and inorganic fibers such as carbon fibers and alumina fibers. Any shape can be used as long as it can be formed into the shape shown in FIG. The molding method includes (i)
A method in which a fiber group (fiber aggregate) dispersed in water is scooped with a mesh of a predetermined shape and pressed and formed while dewatering. (Ii) A fiber aggregate containing heat-fusible fibers is pressed using a predetermined mold. And (iii) a method of molding by pressing and heating a fiber assembly containing a thermosetting resin precursor. In order to reinforce the filter material, before or after the above-mentioned molding, for example, a reaction precursor such as a thermosetting phenolic resin or an epoxy resin is applied, impregnated, or sprayed, and may be reinforced by thermosetting after molding. Good.
In addition, a porous adsorbent and / or a basic adsorbent may be contained in the filter medium in order to enhance the adsorbability of contaminants, particularly, minute contaminants. Sepiolite can be mentioned as a porous adsorbent. Sepiolite refers to a substance having a hydrous magnesium silicate composition, exhibiting solid acidity, and can be used as a decolorizing agent, a water absorbing agent, an oil absorbing agent, and a deodorant, and is commercially available under the trade name of ADEPLUS (Mizusawa Chemical Co., Ltd.) Short fiber products and long fiber products (ML-type)
Can be used. In addition to sepiolite, activated carbon, zeolite and other adsorbents may be used. Examples of the basic adsorbent include a basic substance such as potassium titanate.

Reference numeral 3 'denotes a filter element of a full flow element, which has a support member 3'a. The support member 3'a has the cylindrical body 3b and the end plate 3d shown in FIG. Although the end plate 3'c has an end plate 3'c, the end plate 3'c has a fitting cylindrical portion 3'c-1 fitted in the through hole 2'f-1 of the filter 2 'at the center of the plate. While forming and enabling communication between these through holes and the fitting cylindrical portion,
The periphery is bent toward the end plate 3d. The fold-shaped filter medium 3f shown in FIG. 1 is wound around the cylindrical body 3b between the end plate 3'c and the end plate 3d, and both end edges on the outer peripheral side are formed by bending the peripheral edges of both end plates. It can be stored. The cylindrical member 3b, the end plate 3'c, and the end plate 3d are integrally formed to form a support member 3'a, and the support member 3'a and the filter medium 3f are integrally formed.
Other configurations are the same as those in FIG.

In such a configuration, in order to perform the assembling in the same manner as in the case of FIG. 1, as described above, the filter 3 ′ of the full flow element as in the case of the filter 3 of the full flow element is provided in the case 1. It is mounted on a predetermined position of the spring 5 and further includes a filter element 2 ′ of the bypass element.
The fitting cylindrical portion 3'c-1 of the filter 3 'is fitted into the through hole 2'f-1 and is superposed on the filter 3'.
After that, as described above, after the valve element 7 is mounted on the end plate 2'a, the filter oil delivery pipe body with the mounting plate b and the closing plate 1e integrated with the closing plate 1e inside. 1c is inserted into the mounting hole of the valve body 7, and is positioned so as to fit into the bulging portion of the end plate 2'a.
b is attached to the periphery of the opening of the case 1 by caulking. Thereby, the filter bodies 2 ′ and 3 ′ are housed in the case 1 and are sandwiched by the closing plate 1 e via the leaf spring 5 and the valve body 7. Next, 1 g of the filtered oil introduction pipe is inserted into the filtered oil delivery pipe 1c, and further the inner pipe 1g-
1 is fitted into the through hole 2'f-1 of the filter body 2 'in close contact with the outer tube 1g-2, and the outer tube 1g-2 is fitted in the insertion hole of the end plate 2'a in a close contact state. 2 are communicated with the liquid reservoir holes 2'f-1, 2'f-1,... Of the filter 2 '. In the above, the filter body 2 'is easily obtained by integral molding,
Inner tube 1g-1 of second filter body and 1g of filtered oil introduction tube
Is easily and smoothly performed by fitting into the through-hole 2'f-1, so that the operation is easy, and only the end plate 2'a needs to be connected for the connection. If the filter body 2 'is assembled as a single body, the need for the filter body 2' is eliminated, and the number of connected parts can be reduced to zero.

The cartridge-type combination filter for oil treatment obtained in this way has an inlet 1
The oil introduced from d, 1d,... deforms the valve body 7b by the pressure and flows in, and is treated by the filter material 2′f in the filter 2 ′, and the filtered oil is passed through the through hole 2 ′. a plurality of liquid reservoir holes 2'f provided so as to surround f-1.
-2, 2'f-2 ..., and the overflowed oil is sent to the outer tube 1g-2 of the filtered oil introducing tube 1g, while the filter 3 'is treated with the filter medium 3f and filtered. The oil thus circulated flows through the cylindrical body 3b, sequentially passes through the fitting tubular portion and the through hole, and is sent out to the inner pipe 1g-1 of the filtered oil introducing pipe 1g. At that time, by using the fine filter material for the former and the coarser filter material for the latter in the filter bodies 2 'and 3', the former captures fine particles and the latter performs the main oil treatment. Can be. When the filter medium of the filter body 3 'is clogged, as described above, the relief valve 6 is actuated by the predetermined pressure exceeding a certain limit of the oil, and moves against the elasticity of the spring of the valve plate. The valve is opened, and the oil passes through the through-hole of the frame, flows into the cylindrical body 3b, further passes through the fitting tubular portion and the through-hole sequentially, and passes through the inner pipe of the filtered oil introducing pipe 1g. 1g-1. The filtered oil delivered to the filtered oil introducing pipe 1g may be directly introduced into the oil using body such as an internal combustion machine, or may be temporarily stored in an oil reservoir and then introduced into the oil using body. Further, the filtration oil introduction pipe may be made a single pipe, and an inlet such as a through-hole may be provided on the branch pipe or the side face.

When used, the case 1 is cut and the case 1 is removed. When the leaf spring 5 and the relief valve 6 are integrated, the filter 3 'is separated from the filter 3', and the filter 2 'is removed. By removing the valve body 7 from the filter body 2 ′,
The end plate 2′a and the filter body 3 ′ are obtained by being separated, and each can be separated. The part obtained by cutting the case 1, the one in which the leaf spring and the relief valve are integrated, is collected as a metal material, and the filter 2 'and the filter 3' are incinerated if they are made of a combustible material. However, when the end plate 2'a and the end plates 3'c, 3d are made of non-combustible material, they are removed, and when the removed gasket 1f and the valve body 7 are made of rubber, they are incinerated together. May be.

In the above, the material of the case 1 is
A non-combustible material such as a metal material such as steel can be used, but aluminum or its alloy material can also be used in terms of lightness and durability. In addition, although the filter 2 ′ is described above, the filter 3 ′
The pleats of the pleated filter material such as pleated filter paper wound around the peripheral side of the cylindrical body may be fixed at both ends by end plates, or a non-woven cylindrical body, etc., as long as they can be held and fixed to the case by a spring member. . Further, the cylindrical body of the support member of the filter 3 ′ may be made of metal, but at least one of paper and resin.
That is, it is preferable that the combustible material is only paper, only resin, or a composite of paper and resin, and the end plate 2′a and the end plates 3′c, 3d may be metal, but paper and nonwoven fabric At least one of the two, namely paper only,
It is preferable that the combustible material is composed of only the nonwoven fabric or a composite of paper and nonwoven fabric. The filter 3f is made of at least one of the filter paper and the nonwoven fabric, that is, only the filter paper, only the nonwoven fabric, or the composite of the filter paper and the nonwoven fabric. Is preferable in that it is a combustible material. In addition, it does not need to be a fold. Examples of the resin include a thermoplastic resin such as a polyolefin resin.Other resins may be used, and the nonwoven fabric may be not only a cellulosic fiber but also a synthetic fiber or a mixture thereof, each of which generates a toxic gas when incinerated. Although no material is preferable, the material is not limited to this.

[0020]

An embodiment of the present invention will be described. Wood pulp 40
4 parts by weight, 10 parts by weight of linter pulp, 30 parts by weight of polyester fiber, and 20 parts by weight of adhesive polyester fiber are pressurized and heated in a mold having a predetermined shape to obtain a molded product having a shape shown in FIG. 35mm, outer diameter 85mmφ, inner diameter 41
mmφ). 15 parts by weight of a phenol resin was impregnated into 100 parts by weight of the molded body and cured. As shown in FIG. 3 described above, this molded body is incorporated as a filter body 2 ′ used for a bypass element, and a filter body 3 ′ used for a full flow element is a normal one, and the size is As shown in FIG. 3, one cartridge-type combination filter for oil treatment is obtained. At this time, as described above, the connection member is attached to the end plate 2 ′.
There is no particular need to use other members besides a,
The end plate 2'a also has a simple structure and can be incorporated into the filter body 2 ', so that the operation is easy, and the connection with the filter oil introduction pipe 1g is made through the inner pipe 1g-1 through the through hole 2'. f-
1 can be smoothly performed together with the operation of fitting. Normally, in this type of filter, oil containing contaminants (dirt) enters from the lower bottom and is filtered by the filter element 3 'of the full flow element and the filter element 2' of the bypass element. After being directly filtered on the peripheral side of the filter body 2 'of the bypass element, the filter passes through separate flow paths (inner pipe 1g-1, outer pipe 1g-2), the former to the engine unit, and the latter to the oil pan. And is sent to the engine through this oil pan. In such a cartridge type combination filter for oil treatment, the surface of the filter body 3 'is covered with an oil-impermeable film so that oil does not flow at all, and the following test dust is produced using an automobile oil tester. Was tested in accordance with JIS D1611 using the following test oil in which 0.9% was mixed, and the flow rate of the test oil was 15%.
Under the conditions of L / min, the filtration efficiency was 89.1% (meaning that the filtration efficiency was the same as that obtained by using a test sample having a filtration efficiency of 89.1% determined by the following test and calculation). Lifespan was 44 hours. The flow rate filtered by the filter element 2 'of the bypass element is 2900 cc.
/ Min.

(Test Oil and Test Dust) In the test, a mixture of the following oil and the following dust at 0.9% was used. Oil: Same as the product described in JIS D1611. Lubricating oil of JIS K2216 Class 1 No. 3
AE $ 30 (trade name) Dust: Contaminant is SOFT C-2A (US P
(TI company import, importer of science and engineering trade) used. The contents are well mixed with the following composition and are expressed in weight percentage (%). Carbon black (average particle size 80μ) 16% Ferric oxide (containing 95% of particle size 5μ or less) 2% Petroleum-based asphalt resin powder 4% Oil used 78% In addition, petroleum-based asphalt resin powder is JIS Z88
1 shows a particle size distribution of 0% on a 590μ sieve, 10% on a 177μ sieve, and 0% on a 74μ sieve using a sieve according to No. 01. (Test of filtration efficiency) 50 g of the test oil mixed with 0.9% of the test dust was mixed with an effective filtration area of 2 cm ^2.
The filtrate was diluted with kerosene, filtered through a 0.45 μm membrane, and the amount of contaminants in the filtrate was determined from the residual weight. The filtration efficiency was determined by the following equation. Filtration efficiency (%) = (initial amount of contaminants in oil-amount of contaminants in filtrate) / initial amount of contaminants in oil After the test was completed, case 1 was cut off, the members made of different materials were separated, and Rubber part and filter 2 '
And a filter 3 ′ (the end plate and the end plate were also combustible materials). The steel portion was recovered and reused, and the rubber portion, the filter body 2 'and the filter body 3' were incinerated, leaving only a small amount of ash. Since the steel portion is recovered without being heated, it can be reused as a high-quality resource with a low degree of oxidation.

Example 2 An integrally formed article was produced in the same manner as in Example 1 except that 50% by weight of sepiolite was contained in the filter material of the first filter 2 'of the bypass element used in Example 1. A cartridge type oil treatment combination filter was prepared in the same manner as in Example 1 except that the filter was used.
As a result, the filtration efficiency was 93% by the same evaluation method as in Example 1, and the filtration life was 45 hours. Also,
The flow rate filtered by the filter 2 ′ of the bypass element is 2
It was 900 cc / min. After the test, processing could be performed in substantially the same manner as in Example 1.

Comparative Example 1 A filter obtained by molding a filter paper containing potassium titanate into a pleated shape in FIG. 1 and having the shape and size according to the filter 2 'shown in FIG. 4 described in Example 1 A cartridge type oil treatment combination filter was prepared in the same manner as the cartridge type oil treatment combination type filter shown in FIG. 3 except that the body 2 was used, and tested in the same manner as in Example 1. According to the same evaluation method as in Example 1, 84.2%, and the filtration life was 39 hours. The flow rate filtered by the filter 2 of the bypass element was 1450 cc / min. After the test, the case 1 is cut, and the cut portion of the case 1 and the leaf spring 5, the rubber portion (gasket 1f and the valve body 7), the filter body 2 and the resin pipe 2c are integrated, the filter body 3 and the relief When the valve 6 was separated into integral parts, and the other parts except the cut part of the case 1 and the leaf spring 5 were incinerated,
The filter paper, the adhesive, the rubber part, and the resin pipe burned, but the end plates 2a, 2b, end plates 3c, 3d, and the portion of the relief valve 6 made of steel remained. Has a quality problem.

Comparative Example 2 In Comparative Example 1, the cartridge type was the same as in Comparative Example 1, except that the roll type filter paper laminate (the filter paper was laminated and wound multiple times) was the same in shape and size. A combination type filter for oil treatment was prepared and tested in the same manner as in Example 1. As a result, the filtration efficiency was 81.8% by the same evaluation method as in Example 1, and the filtration life was 33 hours. The flow rate filtered by the filter body 2 of the bypass element was 2000 cc / min. After the test, if the treatment is performed in the same manner as in Comparative Example 1, there is a similar problem.

In the above, the filter body 2 'is formed by heating and pressurizing, but it may be formed by forming a fiber aggregate with a net having a predetermined shape.

[0026]

According to the present invention, a filter obtained by forming a block-shaped filter medium having a through hole and a liquid storage hole by integral molding of the filter medium is used as a filter element of a bypass element. An oil treatment combination type filter for connecting this to a filtration oil introduction pipe having an inner pipe and an outer pipe communicating with the through hole and the liquid storage hole and connecting a filter of a full flow element by using the member, and Since a filter body can be provided, the number of parts and materials such as an adhesive used for a connection portion between the bypass element and the full flow element are significantly reduced or eliminated, and manufacture and assembly are easy. The connection between the filter body of the bypass element and the body of the oil body is made easy by connecting the filter body easily. Can be done, it is possible to provide a filter body production and reduce possible oil processing Combination filter and filtration of manufacturing costs, including the assembling work of the. Further, it is possible to provide a combination type filter for oil treatment provided with a bypass element having a filter which can increase the amount of oil treatment and has a high efficiency of capturing minute contaminants, and a filter thereof. In addition, the proportion of recyclable parts of the components is increased, and the parts to be discarded can be easily treated, without requiring land for landfill, incineration is easy, and the residue is ash-free. Thus, it is possible to provide a combination type filter for oil treatment and a filter of the combination, which can protect the environment and resources.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a conventional combination type filter for oil treatment in use, with some internal components shown in a partial cross-sectional view.

FIG. 2 is a cross-sectional view of a dotted circle in FIG. 1 showing a connecting portion between the first filter and the second filter.

FIG. 3 is a partial cross-sectional view showing a use state of the combination type filter for oil treatment according to one embodiment of the present invention.

FIG. 4 is a perspective view of the first filter.

[Brief explanation of sign]

 DESCRIPTION OF SYMBOLS 1 Case 2 '1st filter body 2'a End plate 2'f Block-shaped filter material 2'f-1 Through hole 2'f-2 Liquid storage hole 3' Second filter body 3'a Support member 3b Cylindrical Body 3'c, 3d End plate, 3f Filter material 5 Leaf spring 6 Relief valve

Claims (8)

[Claims] 1. An oil circulation circuit, which is connected to a main body of an oil body for introducing and using oil directly from a flow passage having a bypass or through an oil reservoir and sending out the used oil. In the combination type filter for oil treatment, which constitutes the other of the oil circulation circuit, each of an outlet communicating with the main body of the bypass and the flow passage and an introduction port communicating with the delivery section for delivering the oil of the main body using oil. A case having at one end side,
One end of a through-hole provided in a block-shaped filter medium integrally formed with a filter medium is connected to one end of the main body of the flow passage, and each of the liquid reservoir holes including a plurality of blind holes opened to one end is provided. A first filter body provided in the case so as to communicate the end opening of the bypass and the inlet with the outside of the block-shaped filter medium, and a tubular body having both ends opened having a through hole. A supporting member having a filtering material on a peripheral side of the cylindrical body, an opening on one end side of the cylindrical body communicating with a through hole of the first filtering body, and the introduction port outside the filtering material. A second filter provided in the case so as to communicate with the first filter, and a support member for the second filter which presses one end of the first filter to the inside of one end of the case. An oil-permeable spring provided inside the other end of the case opposite to the end A wood and a Ririfubarupu having a spring for pressing the second filtration of the tubular body other end a valve seat provided in the opening and the valve body and the valve body of the valve seat,
Oil is introduced from the inlet, and in the first filter, delivery to the end opening of the bypass through the block-shaped filter medium is performed mainly by the stored liquid stored in the liquid storage hole, and the second filtration is performed. In the body, it passes through the through-hole through the filter material and is sent from the one end side opening side of the cylindrical body to the end opening of the main body of the flow passage through the communicating portion with the through hole, When the pressure in the second filter body becomes a predetermined pressure due to clogging of the filter medium, the relief valve is operated to introduce oil into the cylindrical body from the other end opening side and from one end side opening side thereof. A combination type filter for oil treatment, which is delivered to an end opening of a main body of the flow passage through a communication portion with the through hole. 2. The combination type filter for oil treatment according to claim 1, wherein the first filter body is a molded body formed by molding a filter medium using at least one of pressurization and heating in a mold having a predetermined shape. 3. The combination filter for oil treatment according to claim 1, wherein the first filter body is a formed body formed by forming a fibrous aggregate of a filter material through a mesh having a predetermined shape. 4. The communication between the through-hole of the first filter and the cylindrical body of the second filter is performed by a fitting member that fits into the through-hole formed in the support member of the second filter. The combination filter for oil treatment according to any one of claims 1 to 3, wherein the connecting member is not required. 5. The combination filter for oil treatment according to claim 1, wherein the filter medium of the first filter body is mainly composed of cellulose fibers or synthetic fibers. 6. The filter medium of the first filter body contains a porous adsorbent and / or a basic adsorbent.
The combination type filter for oil treatment according to any one of the above. 7. The combination filter for oil treatment according to claim 6, wherein the porous adsorbent is sepiolite. 8. A filter of a combination type filter for oil treatment, which is at least a first filter of the first filter and the second filter according to claim 1.