JP2002035514A - Filter and filter apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily wash a filter medium without being accompanied by troublesome disassembling and assembling work. SOLUTION: The end plate members 21 supporting both ends of a cylindrical filter medium 17 have core member insertion holes 21c each of which has a diameter equal to or larger than the outer diameter of the core member 19 inserted in the filter medium 17. At the time of washing of the filter medium 17, the core member 19 can be inserted in and drawn out of the core member insertion holes 21c of the end plate members 21 in such a state that the filter medium 17 is prevented from getting out of shape by supporting both ends of the filter medium 17 by the end plate members 21. Therefore, the filter medium can be easily washed without being accompanied by troublesome disassembling and assembling work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a filter and a filtering device.

[0002]

2. Description of the Related Art For example, a filter device for filtering a fluid such as an engine oil or a lubricating oil used in various industrial fields accommodates a filter in a housing and filters out the fluid flowing into the housing by the filter. The structure to be made is common.

[0003] As a filter used in such a filtering device, a cylindrical core having an opening for permitting the flow of a fluid is inserted inside a cylindrical filter medium formed of a porous member. There is a filter in which both ends of a filter medium and a core material are fixed by end plate members in order to maintain the shape. In addition to the above-described configuration, there is a filter in which the outer periphery of the filter medium is covered by a cylindrical outer cylinder having an opening that allows fluid to flow.

[0004]

In recent years, regulations on disposable filtration devices have become stricter for environmental protection, and it has been required to clean and reuse filters. However, even if the filter is taken out of the housing of the filtering device, the core cannot be taken out without removing the end plate member, so that it is difficult to wash the filter medium. Further, the disassembling operation for removing the end plate member to remove the core material and the assembling operation thereafter are troublesome. In particular, in the case where a cylindrical filter medium is formed by joining both ends of a sheet-like material folded in a chrysanthemum shape so as to obtain a large number of folds for the purpose of increasing the filtration area, remove the end plate member. The folds expand and the diameter of the filter medium expands,
A cumbersome assembling operation of pressing the filter medium from the periphery and keeping the diameter small, and fixing the end plate member in this state is forced. When the filter medium is washed without removing the core in order to avoid the trouble of the disassembly and assembly work, it is difficult to remove foreign substances clogged between the filter medium and the core.

An object of the present invention is to make it possible to easily clean a filter medium without troublesome disassembly and assembly operations.

[0006]

According to a first aspect of the present invention, there is provided a filter having a cylindrical filter medium formed of a porous member and an opening for permitting the flow of a fluid, which is inserted inside the filter medium. Cylindrical core, and an end plate member having a core insertion hole equal to or larger than the outer diameter of the core and supporting both ends of the filter medium,
Is provided.

Therefore, when the filter medium is washed, the core can be removed from the core insertion hole of the end plate while the both ends of the filter are supported by the end plate.

According to a second aspect of the present invention, in the filter according to the first aspect, the filter medium is surrounded by a cylindrical outer cylinder having an opening for allowing a fluid to flow.

Therefore, it is possible to stabilize the shape of the filter medium and protect the filter medium by the outer cylinder.

[0010] According to a third aspect of the present invention, there is provided a filter according to the first or second aspect, a flow path connecting an inner peripheral side and an outer peripheral side of the filter, and both ends of these flow paths connected to an external conduit. And a housing having a connection portion for connection.

Thus, when fluid is taken in from one connection, the fluid is filtered by the filter medium and flows out from the other connection. At the time of cleaning, remove the filter from the housing, and with both ends of the filter medium supported by end plate members,
The core can be detached from the core insertion hole of the end plate member.

According to a fourth aspect of the present invention, in the filtering device according to the third aspect, one of the connecting portions is a connecting portion for taking a fluid outside the filter.

[0013] Therefore, the fluid taken in from one of the connection portions passes from the outside to the inside of the filter medium and flows toward the other connection portion. As a result, the filter medium receives the pressure of the fluid from the outside. Therefore, when providing an outer cylinder that stabilizes the shape of the filter medium, it is possible to use a simple outer cylinder that does not require much strength.

According to a fifth aspect of the present invention, in the filtering device according to the third aspect, one of the connecting portions is a connecting portion for taking a fluid inside the filter.

[0015] Therefore, the fluid taken in from one of the connection portions passes from the inside to the outside of the filter medium and flows toward the other connection portion. This makes it possible to capture coarse foreign substances contained in the fluid between the inside of the filter medium and the core. In this case, since the core body can be removed while both ends of the filter medium are supported by the end plate members, foreign matters trapped inside the filter medium can be easily washed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. 1 is a longitudinal sectional side view of the filter device, FIG. 2 is a plan view thereof, FIG. 3 is a longitudinal sectional side view of the filter, FIG. 4 is a horizontal sectional view of the filter medium, and FIG. 5 is a longitudinal side view of the filter medium separated from the core. It is.

As shown in FIG. 1, a housing 2 of a filtration device 1 has a cup-shaped case 3 having an open upper end and disk-shaped blocks 4 and 5 stacked in a three-layer structure to form a plurality of attachments. It is formed by connecting the disks 7 and 8 to the lower end surface of the case 3 and the upper end surface of the block 5 with a plurality of mounting screws 9. A connection hole 10 is formed in the disk 7 as a connection portion for taking in a fluid such as engine oil, and a connection hole 11 is formed in the disk 8 as a connection portion for flowing out the filtered fluid. Case 3
A bracket 3a for fixing the housing 2 to a desired position is fixed to the lower three places by means such as welding.

A filter storage chamber 12 is formed inside the case 3. Although not shown in FIG. 1, the block 4 is provided with a plurality of filter mounting holes 13. The block 5 is formed with a conical space 14 connecting between the filter mounting hole 13 and the connection hole 11. A flow path 15 is formed by the connection hole 10, the filter storage chamber 12, the filter mounting hole 13, and the space 14.

Referring now to FIG. 3, the configuration of the filter 16 mounted in the filter storage chamber 12 of the housing 2 will be described. The filter 16 has a cylindrical filter medium 17 formed of a porous member, and a plurality of openings (small holes in this example) 18 that allow fluid to flow therethrough. Core member 19, a cylindrical outer cylindrical body 20 surrounding the outer periphery of the filter medium 17, an end plate member 21 fixed to both ends of the filter medium 17, and one end of the core body 19 The end plug 22 welded to the end and the core body 19
And an end fitting 23 welded to the other end. The end plug 22 and the end fitting 23 may be fixed to the short portion of the core body 19 by other means such as screwing.

As shown in FIG. 4, in the present embodiment, a cylindrical filter medium 17 is used in which both ends of a metal sheet folded in a chrysanthemum shape are connected, but the present invention is not limited to this.

Further, in the present embodiment, the end plate member 21 is formed by joining two members of a disk-shaped ring 21a and a short cylindrical ring 21b, but is formed by one member. No problem. The ring 21a has a core insertion hole 21c (see FIG. 5) at the center so that the core 19 and the end plug 22 can be inserted and removed. Further, in the present embodiment, since the filter medium 17 is formed of a metal material, the end plate member 21 is fixed to the end of the filter medium 17 by welding. The space between the end plug 22 and the end fitting 23 and the end face of the end plate member 21 is sealed by packings 22a and 23a (see FIG. 3).

A screw 24 screwed into the filter mounting hole 13 of the housing 2 is cut on the outer periphery of the end fitting 23, and a hollow hole 25 communicating with the space 14 of the housing 2 is formed at the center. . A packing 27 having a diameter equal to the diameter of a flange 26 formed at the base is fitted to the base of the end fitting 23.
A screw hole 28 is formed on the end face of the end plug 22, a nut 29 is screwed around the outer periphery, and a packing 30 is fitted.

In FIG. 1, the filter 16 is shown in cross section on the right side inside the housing 2 and is not shown on the left side. As understood in this state, the outer cylinder 2
Reference numeral 0 denotes a cylindrical shape formed by winding a wire such as a wire around the outer periphery of the filter medium 17 in a coil shape, and a portion where the wire does not exist is an opening 31 that allows the flow of a fluid.

Next, the filter 16 for the housing 2
Will be described. This embodiment is an example in which six filters 16 are mounted on the housing 2 as shown in FIG. As shown in FIG. 1, eight filters 16
Is attached to the block 32 by screwing a mounting screw 33 inserted into the block 32 into a screw hole 28 of the end plug 22, and the other end is attached to the end fitting 23.
Is screwed into the filter mounting hole 13 of the block 4 to be supported. That is, the upper ends of the plurality of filters 16 are supported by the block 4 and these filters 16
The block 32 is supported at the lower end of. In this state, the space between the plane of the block 32 and the end plug 22 is sealed by the packing 30, and the space between the outer peripheral portion of the end fitting 23 and the filter mounting hole 13 is sealed by the packing 27. Block 32
Has an inverted umbrella shape, and a certain gap is formed between the umbrella-shaped surface and the lower bottom surface of the case 3.

In such a configuration, when fluid is taken in from the connection hole 10, the fluid is diffused around the six filters 16 along the slope of the umbrella-shaped block 32, and the fluid is diffused from the opening 31 of the outer cylinder 20. After passing through the filter medium 17, it is discharged from the connection hole 11 through the opening 18 of the core body 19, the hollow hole 25 of the end fitting 23, and the space 14. At this time,
Foreign matter contained in the fluid is captured by the filter medium 17. In this case, since the filter medium 17 receives the pressure of the fluid from the outside, it is possible to stabilize the shape of the filter medium 17 even by using a simple outer cylinder 20 that does not require much strength as if the wire is wound in a coil shape. it can.

When used for a long time, the filter medium 1 of the filter 16
Since 7 causes clogging, the mounting screw 6 is removed and the housing 2 is disassembled. That is, the blocks 4 and 5 are removed from the case 3. In this state, the mounting screw 33 is removed to remove the block 32 from the filter 16, and then the end fitting 23 is rotated in a loosening direction to remove it from the block 4. Thereby, as shown in FIG. 3, the filter 16 is in a single state. In this state, the nut 29 is removed from the end plug 22 and the end fitting 23 is removed.
3 can be easily pulled out together with the end plug 22 and the end fitting 23 with the end plate member 21 fixed to the filter medium 17 as shown in FIG. .

As another operation method for separating the filter medium 17 to which the end plate member 21 is fixed from the core body 19, the blocks 4 and 5 are removed from the case 3 and the end fitting 23 is supported by the block 4. In this state, remove the mounting screw 33 and remove the block 3 from the filter 16.
2, the nut 29 is removed from the end plug 22, and the filter medium 17 is pulled in the direction opposite to the end fitting 23, so that as shown in FIG.
9 can be separated.

In the state shown in FIG. 5, since the core body 19 is not provided inside the filter medium 17, the flow rate of the cleaning liquid is not weakened by the core body 19, and particularly, hard-to-remove foreign matter adhering to the valleys of the filter medium 17 can be easily obtained. The cleaning can be performed quickly and reliably.

Further, when the filter medium 17 is washed, both ends of the filter medium 17 can be supported by the end plate member 21, so that the washing operation can be performed with the filter medium 17 maintained in a stable shape. In the present embodiment, the filter medium 17 is used in which a metal thin plate folded in a chrysanthemum shape is formed into a cylindrical shape.
Since the filter medium 17 is maintained in a state in which both ends are supported by the end plate member 21, the outer diameter does not increase, and the work of reassembling the filter medium 17 when mounting it on the housing 2 again is easy.

At the time of assembling after cleaning, the filter 1 is mounted on the housing 2 in the reverse order of the disassembly operation described above.
6 is mounted and the housing 2 is assembled.

In this embodiment, the description has been given of the state in which the fluid is taken in from the connection hole 10 and the fluid after the filtration is discharged from the connection hole 11. It is also possible to discharge the fluid that has escaped from the inside to the outside through the connection hole 10. Thereby, coarse foreign substances contained in the fluid can be captured between the inside of the filter medium 17 and the core body 19. In this case, since the core body 19 can be removed while both ends of the filter medium 17 are supported by the end plate member 21, foreign matters trapped inside the filter medium 17 can be easily washed.

[0032]

According to the filter of the first aspect, the end plate member supporting both ends of the cylindrical filter medium has a core insertion hole having a diameter equal to or greater than the outer diameter of the core inserted inside the filter medium. Therefore, at the time of washing the filter medium, the both ends of the filter medium are supported by the end plate member, and the core body can be detached from the core body insertion hole of the end plate member while the shape of the filter medium is prevented from being collapsed. . Therefore, the filter medium can be easily and reliably washed.

According to the second aspect of the present invention, in the first aspect of the present invention, the filter medium is surrounded by a cylindrical outer cylinder having an opening for allowing a fluid to flow therethrough. Thereby, the shape of the filter medium can be stabilized and the filter medium can be protected.

According to a third aspect of the present invention, there is provided the filter according to the first or second aspect, a flow path connecting the inner peripheral side and the outer peripheral side of the filter, and both ends of these flow paths being connected to an external conduit. And a housing having a connection portion that connects to the
When fluid is taken in from one connection, the fluid is filtered by the filter medium and flows out from the other connection. At the time of cleaning, the filter can be removed from the housing, and both ends of the filter medium can be supported by end plate members, and the core can be detached from the core body insertion hole of the end plate member while the shape of the filter medium is prevented from being collapsed.
Therefore, the filter medium can be easily and reliably washed.

According to the fourth aspect of the present invention, in the filtering device according to the third aspect, since one of the connecting portions is a connecting portion that takes in fluid outside the filter, the fluid introduced from one of the connecting portions is provided. Flows from the outside to the inside of the filter medium and flows toward the other connection part, whereby the filter medium receives the pressure of the fluid from the outside.Therefore, when providing an outer cylinder for stabilizing the shape of the filter medium, the strength is increased. A simple outer cylinder that does not require much can be used.

According to the fifth aspect of the present invention, in the filtering device according to the third aspect, one of the connecting portions is a connecting portion that takes in the fluid inside the filter, so that the fluid introduced from one of the connecting portions is provided. Flows from the inside of the filter medium to the outside and flows toward the other connection portion, whereby coarse foreign substances contained in the fluid can be trapped between the inside of the filter medium and the core. In this case, since the core body can be removed while both ends of the filter medium are supported by the end plate members, foreign matters trapped inside the filter medium can be easily washed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a filtration device according to an embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a vertical sectional side view of a filter.

FIG. 4 is a horizontal sectional view of a filter medium.

FIG. 5 is a longitudinal sectional side view showing a state where a filter medium is separated from a core.

[Explanation of symbols]

 2 Housing 10, 11 Connection part 15 Flow path 16 Filter 17 Filter material 18 Opening 19 Core body 20 Outer cylinder 21 End plate member 21c Core body insertion hole 31 Opening

Claims (5)

[Claims] A cylindrical filter member formed of a porous member; a cylindrical core member having an opening for allowing fluid to flow therethrough and inserted inside the filter member; An end plate member having a core insertion hole having an outer diameter equal to or greater than an outer diameter and supporting both ends of the filter medium. 2. The filter medium is surrounded by a cylindrical outer cylinder having an opening for allowing a fluid to flow.
The filter described. 3. The filter according to claim 1, further comprising: a flow path connecting an inner peripheral side and an outer peripheral side of the filter; and a connection part connecting both ends of the flow path to an external conduit. A filter comprising: a housing; 4. The filtering device according to claim 3, wherein one of the connection portions is a connection portion for taking a fluid outside the filter. 5. The filtering device according to claim 3, wherein one of the connection portions is a connection portion for taking a fluid inside the filter.