CA2656932C - Locking plate tie rod for a self-cleaning filter - Google Patents
Locking plate tie rod for a self-cleaning filter Download PDFInfo
- Publication number
- CA2656932C CA2656932C CA2656932A CA2656932A CA2656932C CA 2656932 C CA2656932 C CA 2656932C CA 2656932 A CA2656932 A CA 2656932A CA 2656932 A CA2656932 A CA 2656932A CA 2656932 C CA2656932 C CA 2656932C
- Authority
- CA
- Canada
- Prior art keywords
- filter
- locking plate
- tie rod
- face
- blades
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title description 7
- 125000006850 spacer group Chemical group 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
- B01D29/46—Edge filtering elements, i.e. using contiguous impervious surfaces of flat, stacked bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A locking plate tie rod for a filter includes a tie rod body having a first face, a second face, and a filter-facing side. The filter-facing side has a profile defining a cutout. A locking member extends across the cutout. The locking member has an opening for receiving a blade support rod. The blade support rod supports the attachment end of a series of spaced blades. The cutout is sufficiently large to receive the attachment end of the spaced blades, such that a plurality of spaced blades are positioned between the first face and the second face.
Description
TITLE
[0001] Locking plate tie rod for a self-cleaning filter FIELD
[0001] Locking plate tie rod for a self-cleaning filter FIELD
[0002] Locking plate tie rod for a self-cleaning filter, such as a Cuno-style filter.
BACKGROUND
BACKGROUND
[0003] Filters made from spaced, stacked discs, such as Cuno-type filters, are made self-cleaning by inserting blades between the discs to scrape away any buildup. An example of such a filter is shown in U.S. patent no. 3,616,914 (Reid) entitled "Self-cleaning filter system".
SUMMARY
SUMMARY
[0004] There is provided a locking plate tie rod for a filter. The locking plate tie rod includes a tie rod body having a first face, a second face, and a filter-facing side. The filter-facing side has a profile defining a cutout A locking member extends across the cutout. The locking member has an opening for receiving a blade support rod. The blade support rod supports the attachment end of a series of spaced blades. The cutout is sufficiently large to receive the attachment end of the spaced blades, such that a plurality of spaced blades are positioned between the first face and the second face.
[0005]
[0006] According to another aspect, there is provided a filter. The filter comprises a series of spaced discs. The spaces between the discs define filter openings. A
series of spaced blades are inserted between the spaced discs. The blades have an attachment end. A
blade support rod supports the attachment end of the blades. There is a locking plate tie rod support, and a locking plate tie rod. The locking plate tie rod comprises a plate body having a first face, a second face, a filter-facing side positioned adjacent to the series of spaced discs, and a receiver for receiving the locking plate tie rod support. The filter-facing side has a profile defining a cutout. A locking member is supported by the plate body such that the locking member extends across the cutout. The locking plate has an opening for receiving the blade support rod. The cutout is sufficiently large to receive the attachment end of the spaced blades, such that a plurality of the spaced blades are positioned between the first face and the _ second face.
BRIEF DESCRIPTION OF THE DRAWINGS
series of spaced blades are inserted between the spaced discs. The blades have an attachment end. A
blade support rod supports the attachment end of the blades. There is a locking plate tie rod support, and a locking plate tie rod. The locking plate tie rod comprises a plate body having a first face, a second face, a filter-facing side positioned adjacent to the series of spaced discs, and a receiver for receiving the locking plate tie rod support. The filter-facing side has a profile defining a cutout. A locking member is supported by the plate body such that the locking member extends across the cutout. The locking plate has an opening for receiving the blade support rod. The cutout is sufficiently large to receive the attachment end of the spaced blades, such that a plurality of the spaced blades are positioned between the first face and the _ second face.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] These and other features will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to be in any way limiting, wherein:
FIG. 1 is a top plan view in section of a filter.
FIG. 2 is an exploded top plan view of a locking plate tie rod.
FIG. 3 is an exploded perspective view of a portion of a filter.
FIG. 4 is a side elevation view of a locking plate tie rod with blades.
FIG. 5 is a side elevation view in section of a portion of the filter.
FIG. 6 is a side elevation view of a filter.
FIG. 7 is a side elevation view of a partially assembled prior art filter.
FIG. 8 is a top plan view in section of a prior art filter.
DETAILED DESCRIPTION
FIG. 1 is a top plan view in section of a filter.
FIG. 2 is an exploded top plan view of a locking plate tie rod.
FIG. 3 is an exploded perspective view of a portion of a filter.
FIG. 4 is a side elevation view of a locking plate tie rod with blades.
FIG. 5 is a side elevation view in section of a portion of the filter.
FIG. 6 is a side elevation view of a filter.
FIG. 7 is a side elevation view of a partially assembled prior art filter.
FIG. 8 is a top plan view in section of a prior art filter.
DETAILED DESCRIPTION
[0008] A locking plate tie rod generally identified by reference numeral 10 and a filter generally indicated by reference numeral 100, will now be described with reference to FIG. 1 through 6. A prior art locking plate tie rod 200 and filter 300 will be discussed with reference to FIG. 7 and 8.
Structure and Relationship of Parts:
Structure and Relationship of Parts:
[0009] Referring to FIG. 2 and 4, locking plate tie rod 10 includes a plate body 12 having a first face 15, a second face 17, a filter-facing side 19 positioned adjacent to a series of spaced main discs 14 and a receiver 16 for receiving a tie rod support 18, such as a series of support rods as shown. The filter-facing side 19 has a profile that defines a cutout 20.
Referring to FIG. 1, a locking member, in the form of an inner locking plate 22, extends across cutout 20. As depicted in FIG. 2 and 4, inner locking plate 22 is a separate component from locking plate tie rod 10 that is attached to plate body 12. This makes it easier to manufacture, and allows plate 22 to be replaced if necessary. Referring to FIG. 1, inner locking plate 22 has an opening 24 for receiving a cleaner blade rod 26.
Cutout 20 is sufficiently large to receive an attachment end 28 of cleaner blades 30, such that, referring to FIG. 4, a plurality of spaced cleaner blades 30 are positioned between first face 15 and second face 17 of the plate body 12. Referring to FIG. 5, cleaner blades 30 may be an assembly of a central blade 31 with sandwich plates 33 on either side of blade 31. Sandwich plates 33 help maintain a proper spacing between blades 31. In order to improve the density of blades 30, blade 30 that is adjacent to locking plate 22 may have only one sandwich plate 33.
Referring to FIG. 1, a locking member, in the form of an inner locking plate 22, extends across cutout 20. As depicted in FIG. 2 and 4, inner locking plate 22 is a separate component from locking plate tie rod 10 that is attached to plate body 12. This makes it easier to manufacture, and allows plate 22 to be replaced if necessary. Referring to FIG. 1, inner locking plate 22 has an opening 24 for receiving a cleaner blade rod 26.
Cutout 20 is sufficiently large to receive an attachment end 28 of cleaner blades 30, such that, referring to FIG. 4, a plurality of spaced cleaner blades 30 are positioned between first face 15 and second face 17 of the plate body 12. Referring to FIG. 5, cleaner blades 30 may be an assembly of a central blade 31 with sandwich plates 33 on either side of blade 31. Sandwich plates 33 help maintain a proper spacing between blades 31. In order to improve the density of blades 30, blade 30 that is adjacent to locking plate 22 may have only one sandwich plate 33.
[0010] Referring to FIG. 6, filter 100 has a series of spaced main discs 14, where the spaces between discs 14 defme the filter openings. Referring to FIG. 5, in a preferred embodiment the spaces may be made using spacer washers 51. A series of cleaner blades 30 are inserted between the spaced main discs 14. Blades 30 have an attachment end that is supported by a cleaner blade support rod 26. Locking plate tie rod 10 is supported by a tie rod support 18, which is preferably a series of support rods, as shown in FIG.
6. In the depicted embodiment, blades 30 are positioned on either side of filter 100.
However, in order to provide additional support, additional tie rods 10a may be provided that attach to tie rod supports 18. These tie rods 10a do not support any blades 30 and therefore do not require a cutout 20 or an inner locking plate 22 as with locking plate tie rods 10. Tie rods 10a are used to provide structural support between support rods 18 on the sides of filter 100 where there are no blades 30. It will be understood that different designs for the provision of blades 30, tie rods 10 and 10a, support rods 18, etc. may be used, and that blades 30 may be positioned using a variety of spacings around filter 100, depending on the intended use and preferences of the user/manufacturer. However, it has been found that the depicted design provides adequate structural stability and cleaning between discs 14 with acceptable manufacturing costs when used for filtering heavy oil.
Comparison with Prior Art:
6. In the depicted embodiment, blades 30 are positioned on either side of filter 100.
However, in order to provide additional support, additional tie rods 10a may be provided that attach to tie rod supports 18. These tie rods 10a do not support any blades 30 and therefore do not require a cutout 20 or an inner locking plate 22 as with locking plate tie rods 10. Tie rods 10a are used to provide structural support between support rods 18 on the sides of filter 100 where there are no blades 30. It will be understood that different designs for the provision of blades 30, tie rods 10 and 10a, support rods 18, etc. may be used, and that blades 30 may be positioned using a variety of spacings around filter 100, depending on the intended use and preferences of the user/manufacturer. However, it has been found that the depicted design provides adequate structural stability and cleaning between discs 14 with acceptable manufacturing costs when used for filtering heavy oil.
Comparison with Prior Art:
[0011] Referring to FIG. 7 and 8, prior art locking plate tie rod 200 and filter 300 are shown. Similar reference numbers refer to similar elements. Filter 300 uses a spacer main disc 36 that is positioned to correspond with locking plate tie rod 200.
Spacer disc 36 may either be solid, or a series of narrow discs that are stacked without spacing.
This is necessary as the design of locking plate tie rod 200 does not permit blades to be positioned between the two inner locking plates 22. By contrast, filter 100 has a pattern of discs 14 and blades 30 that extend along almost the entire height of locking plate tie rod 10 as shown in FIG. 5 with only a small gap due to inner locking plate 22. In one embodiment (not shown), it may be possible to avoid any gaps by staggering the height of locking plate tie rod 10. In this situation, the gap corresponding to the position of inner locking plate 22 may have a cleaning blade on the opposite side. As a result, every gap would be cleaned with some only being cleaned by a single blade instead of two.
Assembly and operation:
Spacer disc 36 may either be solid, or a series of narrow discs that are stacked without spacing.
This is necessary as the design of locking plate tie rod 200 does not permit blades to be positioned between the two inner locking plates 22. By contrast, filter 100 has a pattern of discs 14 and blades 30 that extend along almost the entire height of locking plate tie rod 10 as shown in FIG. 5 with only a small gap due to inner locking plate 22. In one embodiment (not shown), it may be possible to avoid any gaps by staggering the height of locking plate tie rod 10. In this situation, the gap corresponding to the position of inner locking plate 22 may have a cleaning blade on the opposite side. As a result, every gap would be cleaned with some only being cleaned by a single blade instead of two.
Assembly and operation:
[0012] Referring to FIG. 3, a series of spacer rods 50 and a cartridge spindle 52 extend upward, and main discs 14 are placed over the rods 50 and spindle 52. While only eight spacer rods 50 are shown, in a preferred embodiment there are twelve, with corresponding holes in main discs 14. Spacer washers 51 are then placed over the rods 50 and between adjacent main discs 14 to create the desired filter spacing. Once complete, the locking plate tie rod support rods 18 are attached, locking plate tie rods 10 are positioned in the approximate position using set screws 60, and the end caps 56 are secured, similar to what is shown in FIG. 5. However, additional main discs 14 are included instead of a spacing plate 36. Preferably, there are four tie rod support rods 18, and the position of locking plate tie rod 10 is staggered along the length of filter 100. The filter 100 may then be placed on its side, and blades 30 are inserted between main discs 14, starting at one end and moving toward the other. As a locking plate tie rod 10 is encountered, cleaner blade support rod 26 is inserted through blades 30 and through inner locking plate 22 on locking plate tie rod 10. Locking plate tie rod 10 can then be positioned in its final position. Because of cutout 20, additional blades 30, and therefore spaced main discs 14, can be included, such that the space that would normally be filled by a solid plate 36 or a series of unspaced discs can be used as a filter.
Cutout 20 is either open toward first face 15, second face 17, or both if locking plate 22 is intermediate the two, depending on the construction of locking plate tie rod 10, such that blades are inserted from the direction of the applicable face 15 or 17. In one example, it was found that increasing the number of discs 14 and blades 30 in this manner increased the filter capacity by about 20%. However, the actual increase will depend on the spacing of the locking plate tie rods 10. When filter 10 is in use, discs 14 are rotated relative to blades 30 by applying a driving force to, for example, to cartridge spindle 52.
Alternatively, blades 30 could be rotated relative to discs 14. Blades 30 act to remove any build-up of residue or debris as they move between discs 14.
Cutout 20 is either open toward first face 15, second face 17, or both if locking plate 22 is intermediate the two, depending on the construction of locking plate tie rod 10, such that blades are inserted from the direction of the applicable face 15 or 17. In one example, it was found that increasing the number of discs 14 and blades 30 in this manner increased the filter capacity by about 20%. However, the actual increase will depend on the spacing of the locking plate tie rods 10. When filter 10 is in use, discs 14 are rotated relative to blades 30 by applying a driving force to, for example, to cartridge spindle 52.
Alternatively, blades 30 could be rotated relative to discs 14. Blades 30 act to remove any build-up of residue or debris as they move between discs 14.
[0013] In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
[0014] The following claims are to be understood to include what is specifically illustrated and described above, what is conceptually equivalent, and what can be obviously substituted. Those skilled in the art will appreciate that various adaptations and modifications of the described embodiments can be configured without departing from the scope of the claims. The illustrated embodiments have been set forth only as examples and should not be taken as limiting the invention. It is to be understood that, within the scope of the following claims, the invention may be practiced other than as specifically illustrated and described.
Claims (6)
1. A locking plate tie rod for a filter, the locking plate tie rod comprising:
a tie rod body having a first face, a second face, and a filter-facing side, the filter-facing side having a profile defining a cutout;
a locking member extending across the cutout, the locking member having an opening for receiving a blade support rod, the blade support rod supporting an attachment end of a series of spaced blades, the cutout being sufficiently large to receive the attachment end of the spaced blades, such that a plurality of spaced blades are positioned between the first face and the second face.
a tie rod body having a first face, a second face, and a filter-facing side, the filter-facing side having a profile defining a cutout;
a locking member extending across the cutout, the locking member having an opening for receiving a blade support rod, the blade support rod supporting an attachment end of a series of spaced blades, the cutout being sufficiently large to receive the attachment end of the spaced blades, such that a plurality of spaced blades are positioned between the first face and the second face.
2. The locking plate tie rod of claim 1, wherein the cutout is open toward at least one of the first face and the second face.
3. The locking plate tie rod of claim 1, wherein the locking member is a locking plate that is attached to the tie rod body.
4. A filter comprising:
a series of spaced discs, the spaces between the discs defining filter openings;
a series of spaced blades inserted between the spaced discs, the blades having an attachment end;
a blade support rod supporting the attachment end of the blades;
a locking plate tie rod support;
a locking plate tie rod comprising:
a plate body having a first face, a second face, a filter-facing side positioned adjacent to the series of spaced discs, and a receiver for receiving the locking plate tie rod support, the filter-facing side having a profile defining a cutout;
a locking member supported by the plate body such that the locking member extends across the cutout, the locking plate having an opening for receiving the blade support rod, the cutout being sufficiently large to receive the attachment end of the spaced blades, such that a plurality of the spaced blades are positioned between the first face and the second face.
a series of spaced discs, the spaces between the discs defining filter openings;
a series of spaced blades inserted between the spaced discs, the blades having an attachment end;
a blade support rod supporting the attachment end of the blades;
a locking plate tie rod support;
a locking plate tie rod comprising:
a plate body having a first face, a second face, a filter-facing side positioned adjacent to the series of spaced discs, and a receiver for receiving the locking plate tie rod support, the filter-facing side having a profile defining a cutout;
a locking member supported by the plate body such that the locking member extends across the cutout, the locking plate having an opening for receiving the blade support rod, the cutout being sufficiently large to receive the attachment end of the spaced blades, such that a plurality of the spaced blades are positioned between the first face and the second face.
5. The filter of claim 4, wherein the cutout is open toward at least one of the first face and the second face.
6. The filter of claim 4, wherein the locking member is a locking plate that is attached to the tie rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2656932A CA2656932C (en) | 2009-03-12 | 2009-03-12 | Locking plate tie rod for a self-cleaning filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2656932A CA2656932C (en) | 2009-03-12 | 2009-03-12 | Locking plate tie rod for a self-cleaning filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2656932A1 CA2656932A1 (en) | 2010-09-12 |
| CA2656932C true CA2656932C (en) | 2013-06-11 |
Family
ID=42735867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2656932A Active CA2656932C (en) | 2009-03-12 | 2009-03-12 | Locking plate tie rod for a self-cleaning filter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2656932C (en) |
-
2009
- 2009-03-12 CA CA2656932A patent/CA2656932C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2656932A1 (en) | 2010-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |