CN213823761U - Filter casing and filter structure - Google Patents
Filter casing and filter structure Download PDFInfo
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- CN213823761U CN213823761U CN202022794581.4U CN202022794581U CN213823761U CN 213823761 U CN213823761 U CN 213823761U CN 202022794581 U CN202022794581 U CN 202022794581U CN 213823761 U CN213823761 U CN 213823761U
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- filter
- pressing plate
- filter element
- element group
- element assembly
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Abstract
The utility model discloses a filter shell and a filter structure, which comprises a filter cylinder, a filter cover and a bottom plate, wherein the top of the filter cylinder is provided with a plurality of ear plates, and the top surfaces of the ear plates are fixed with eyelet bolts; the top surface of the filter element component is provided with an annular second pressing plate; a plurality of elastic pieces are arranged between the first pressing plate and the second pressing plate, and the filter element assembly is pressed onto the bottom plate. The utility model discloses set up a plurality of springs between filter element group spare, the elastic force that produces after compressing through the spring compresses tightly filter element group spare to the bottom plate on, reaches the purpose in elimination clearance, and need not rely on the elasticity of filter element group spare itself to eliminate the clearance again, and filter element group spare need not compress again and provide the elastic force promptly, has avoided filter element group spare because the compression is too big and destroy filter element group spare's normal structure, has guaranteed filter element group spare's integrality.
Description
Technical Field
The utility model belongs to the technical field of the filter technique and specifically relates to a be used for filterable filter housing of lubricating oil and filter structure.
Background
The main function of the lubricating oil filter is to filter impurities in the lubricating oil, and the lubricating oil enters the filter through the oil inlet pipe during operation, and flows out of the oil outlet pipe after being filtered by the filter element assembly in the filter.
Filters typically include a housing and an internal filter element assembly, the housing serving two purposes: firstly, the sealing function is realized, and the lubricating oil is limited to flow in the range of the filter shell and in the specified direction; and the other is used for supporting and protecting the filter element assembly.
In the lubricating oil filter in the prior art, a filter element assembly and a shell are generally in small interference fit, and the clearance between the filter element and the shell is eliminated through the elasticity of the filter element assembly; this arrangement has the following problems: (1) the requirement on the machining precision of the shell is high; (2) the filter element component is easy to be compressed too much, so that the normal structure of the filter element component is damaged; (3) the little excessive cooperation between the two can realize sealedly in the short time, nevertheless because the external force influence such as the rigidity and gravity are less that receive filter element group spare itself, after working a period, appear the clearance very easily between filter element group spare and the casing, especially in the place of filter element group spare top and casing contact, can make partial lubricating oil not filter through filter element group spare and directly discharge from the oil-out after the clearance appears, reduced the filtering quality of filter.
SUMMERY OF THE UTILITY MODEL
The applicant provides a rational in infrastructure filter casing and filter structure to the above-mentioned current lubricating oil filter high demand for casing machining precision, and easy assembly filter element group spare compression is too big, appears the clearance after long-time work easily, influences shortcomings such as the filtering quality of filter, reduces the machining precision requirement of casing, avoids filter element group spare compression too big, avoids long-time work or appears the clearance, guarantees the filtering quality of filter.
The utility model discloses the technical scheme who adopts as follows:
a filter shell comprises a filter cylinder, a filter cover and a bottom plate, wherein an oil inlet is formed in the outer wall surface of the filter cylinder, the filter cover is covered at the top end of the filter cylinder in a sealing manner, the bottom plate is covered at the bottom end of the filter cylinder in a sealing manner, an air outlet is formed in the center of the filter cover, and an oil outlet is formed in the center of the bottom plate; the oil inlet, the oil outlet and the exhaust port are communicated with an internal cavity of the shell; the outer wall surface of the top of the filter cylinder is fixedly provided with a plurality of lug plates along the circumferential direction, the top surfaces of the lug plates are fixedly provided with swing bolts, the swing bolts penetrate through corresponding mounting holes in the filter cover, the penetrating end parts are screwed down through lifting ring nuts, and then the filter cover is fixed on the filter cylinder.
As a further improvement of the above technical solution:
an annular first pressing plate is fixed on the bottom surface of the filter cover.
The bottom surface of the filter cover is provided with a counter bore, and the first pressing plate is fixed on the bottom surface of the counter bore; the first pressure plate is positioned on the inner side of the sealing ring.
A flange is fixedly arranged at the top port of the filter cylinder, and a sealing ring is arranged between the bottom surface of the filter cover and the top surface of the flange.
The outer wall surface of the lower part of the filter cylinder is fixedly provided with a mounting seat.
A filter structure comprises the filter shell, wherein a filter element assembly is inserted in an inner cavity of the shell, a cavity inside the shell and positioned on the outer side of the filter element assembly is a dirty oil cavity, the dirty oil cavity is communicated with an oil inlet, a channel in the center of the filter element assembly is a clean oil cavity, and the clean oil cavity is communicated with an oil outlet; an annular second pressing plate is fixed on the top surface of the filter element component and is positioned right below the first pressing plate of the filter cover; a plurality of elastic pieces are arranged between the first pressing plate and the second pressing plate, and the elastic pieces have certain compression amount and compress the filter element assembly onto the bottom plate.
As a further improvement of the above technical solution:
the outer diameter of the second pressing plate is equivalent to that of the first pressing plate or larger than that of the first pressing plate; the inner diameter of the second pressing plate is equivalent to the inner diameter of the first pressing plate or smaller than the outer diameter of the first pressing plate.
A plurality of elastic components are sequentially sleeved layer by layer from the inner side to the outer side of the first pressing plate, the inner diameter of the elastic component at the innermost side is larger than that of the first pressing plate, and the outer diameter of the elastic component at the outermost side is smaller than that of the first pressing plate.
An elastic member is disposed adjacent to the inner and outer side edges of the first pressure plate, respectively.
The elastic piece is a spring or an elastic sleeve.
The utility model has the advantages as follows:
the utility model discloses set up a plurality of springs between filter element group spare, the elastic force that produces after compressing through the spring compresses tightly filter element group spare to the bottom plate on, reaches the purpose in elimination clearance, and need not rely on the elasticity of filter element group spare itself to eliminate the clearance again, and filter element group spare need not compress again and provide the elastic force promptly, has avoided filter element group spare because the compression is too big and destroy filter element group spare's normal structure, has guaranteed filter element group spare's integrality. Because the spring has a certain compression amount, even if the machining precision of the filter cover and the bottom plate is poor, the compensation can be carried out through the expansion and contraction of the spring, and the machining precision requirement of the shell is reduced; moreover, even if the filter element assembly is influenced by external force such as small rigidity and gravity of the filter element assembly, after the filter element assembly is used for a long time, the axial length of the filter element assembly changes, the spring also can automatically stretch out and draw back to compensate the variation, the gap between the filter element assembly and the shell is avoided, lubricating oil is further prevented from being directly discharged from the oil outlet without being filtered by the filter element assembly, and the filtering performance of the filter is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a filter cartridge; 2. a filter cover; 3. a base plate; 4. a flange; 5. a filter element assembly; 6. a dirty oil chamber; 7. an oil inlet; 8. a clean oil chamber; 9. an oil outlet; 10. an exhaust port; 11. a first platen; 12. a second platen; 13. a spring; 14. a seal ring; 15. an ear plate; 16. an eye bolt; 17. a lifting eye nut; 18. a counter bore; 19. and (7) mounting a seat.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the casing of the present invention comprises a filter cartridge 1, a filter cover 2 and a bottom plate 3, and an internal cavity is formed between the three; an oil inlet 7 is formed in the outer wall surface of the filter cartridge 1; the filter cover 2 is covered on the top end of the filter cartridge 1 and detachably fixed on the filter cartridge 1 through a fastener, and an exhaust port 10 is formed in the center of the filter cover 2; the bottom plate 3 is covered at the bottom end of the filter cartridge 1 and fixed on the inner wall surface of the bottom end of the filter cartridge 1, and an oil outlet 9 is formed in the center of the bottom plate 3; the oil inlet 7, the oil outlet 9 and the exhaust port 10 are communicated with an inner cavity of the shell. A filter element assembly 5 is inserted in an inner cavity of the shell, a cavity inside the shell and positioned on the outer side of the filter element assembly 5 is a dirty oil cavity 6, the dirty oil cavity 6 is communicated with an oil inlet 7, a channel in the center of the filter element assembly 5 is a clean oil cavity 8, and the clean oil cavity 8 is communicated with an oil outlet 9; lubricating oil enters a dirty oil cavity 6 in the shell from an oil inlet 7, enters a clean oil cavity 8 after being filtered by the filter element assembly 5, and is discharged from an oil outlet 9, and if gas exists in the inner cavity of the shell, the gas can be discharged from an air outlet 10.
As shown in fig. 1, a flange 4 is fixedly arranged at a top port of the filter cartridge 1, a plurality of ear plates 15 are fixedly arranged on the top outer wall surface of the filter cartridge 1 and below the flange 4 along the circumferential direction, swing bolts 16 are fixed on the top surfaces of the ear plates 15 and outside the flange 4, the swing bolts 16 pass through corresponding mounting holes on the filter cover 2, and the penetrating end parts are screwed by eye nuts 17, so that the filter cover 2 is fixed on the filter cartridge 1; a sealing ring 14 is arranged between the bottom surface of the filter cover 2 and the top surface of the flange 4 to seal the inner cavity of the casing. The outer wall surface of the lower part of the filter cartridge 1 is fixedly provided with a mounting seat 19 for mounting the filter to a corresponding device.
As shown in fig. 1, a counter bore 18 is formed in the bottom surface of the filter cover 2 and located on the inner side of the sealing ring 14, and an annular first pressure plate 11 is fixed to the bottom surface of the counter bore 18; the bottom surface of the first pressing plate 11 is fixed with a plurality of springs 13, the plurality of springs 13 are sequentially sleeved layer by layer from the inner side to the outer side of the first pressing plate 11, the inner diameter of the innermost spring 13 is larger than that of the first pressing plate 11, the outer diameter of the outermost spring 13 is smaller than that of the first pressing plate 11, and in the embodiment, the springs 13 are respectively arranged at the inner side edge and the outer side edge close to the first pressing plate 11. An annular second pressing plate 12 is fixed on the top surface of the filter element assembly 5 and is positioned right below the first pressing plate 11, when the lifting ring nut 17 is screwed down and the filter cover 2 is fixed on the filter cartridge 1, the spring 13 is extruded by the second pressing plate 12 to generate a certain shrinkage, and under the action of the elastic force of the spring 13, the filter element assembly 5 is pressed on the inner surface of the bottom plate 3, so that the gap between the filter element assembly 5 and the bottom plate 3 is eliminated; the outer diameter of the second pressing plate 12 is equal to the outer diameter of the first pressing plate 11 or slightly larger than the outer diameter of the first pressing plate 11, the inner diameter of the second pressing plate 12 is equal to the inner diameter of the first pressing plate 11 or slightly smaller than the outer diameter of the first pressing plate 11, all the springs 13 on the first pressing plate 11 are guaranteed to be completely pressed on the second pressing plate 12, the stress of the second pressing plate 12 is more uniform, and the pressing of the filter element assembly 5 is more reliable.
The utility model discloses set up a plurality of springs 13 between filter element group spare 2 and filter element group spare 5, the elastic force that produces after compressing through spring 13 compresses tightly filter element group spare 5 to bottom plate 3, reach the purpose in elimination clearance, and need not rely on the elasticity of filter element group spare 5 itself again to eliminate the clearance, filter element group spare 5 need not compress again and provide the elastic force promptly, avoided filter element group spare 5 because the compression volume is too big and destroy the normal structure of filter element group spare 5, guaranteed filter element group spare 5's integrality. Because the spring 13 has a certain compression amount, even if the machining precision of the filter cover 2 and the bottom plate 3 is poor, the compensation can be carried out through the expansion and contraction of the spring 13, and the machining precision requirement of the shell is reduced; moreover, even if the filter element assembly 5 is influenced by external force such as small rigidity and gravity of the filter element assembly 5, after the filter element assembly is used for a long time, the axial length of the filter element assembly 5 changes, the spring 13 can also automatically stretch and retract to compensate the variation, a gap between the filter element assembly 5 and the shell is avoided, lubricating oil is prevented from being directly discharged from the oil outlet 9 without being filtered by the filter element assembly 5, and the filtering performance of the filter is ensured.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention. For example, other resilient members, such as elastomeric sleeves, may be provided between the filter cap 2 and the filter element assembly 5.
Claims (10)
1. A filter housing comprising a filter cartridge (1), a filter cover (2) and a base plate (3), characterized in that: an oil inlet (7) is formed in the outer wall surface of the filter cylinder (1), the filter cover (2) is covered at the top end of the filter cylinder (1), the bottom plate (3) is covered at the bottom end of the filter cylinder (1), an exhaust port (10) is formed in the center of the filter cover (2), and an oil outlet (9) is formed in the center of the bottom plate (3); the oil inlet (7), the oil outlet (9) and the exhaust port (10) are communicated with an internal cavity of the shell; the outer wall surface of the top of the filter cylinder (1) is fixedly provided with a plurality of lug plates (15) along the circumferential direction, the top surfaces of the lug plates (15) are fixedly provided with swing bolts (16), the swing bolts (16) penetrate through corresponding mounting holes in the filter cover (2), the penetrating end parts are screwed through lifting ring nuts (17), and then the filter cover (2) is fixed on the filter cylinder (1).
2. The filter housing of claim 1, wherein: an annular first pressing plate (11) is fixed on the bottom surface of the filter cover (2).
3. The filter housing of claim 2, wherein: a counter bore (18) is formed in the bottom surface of the filter cover (2), and the first pressing plate (11) is fixed on the bottom surface of the counter bore (18); the first pressure plate (11) is located on the inner side of the sealing ring (14).
4. The filter housing of claim 1, wherein: a flange (4) is fixedly arranged at the top port of the filter cylinder (1), and a sealing ring (14) is arranged between the bottom surface of the filter cover (2) and the top surface of the flange (4).
5. The filter housing of claim 1, wherein: the outer wall surface of the lower part of the filter cylinder (1) is fixedly provided with a mounting seat (19).
6. A filter construction, characterized by: the filter shell comprises a filter shell body as claimed in any one of claims 1-5, wherein a filter element assembly (5) is inserted in an internal cavity of the shell body, the cavity inside the shell body and positioned outside the filter element assembly (5) is a dirty oil cavity (6), the dirty oil cavity (6) is communicated with an oil inlet (7), a channel in the center of the filter element assembly (5) is a clean oil cavity (8), and the clean oil cavity (8) is communicated with an oil outlet (9); an annular second pressing plate (12) is fixed on the top surface of the filter element assembly (5) and is positioned right below the first pressing plate (11) of the filter cover (2); a plurality of elastic pieces are arranged between the first pressing plate (11) and the second pressing plate (12), and the elastic pieces have certain compression amount and compress the filter element assembly (5) onto the bottom plate (3).
7. A filter construction according to claim 6 wherein: the outer diameter of the second pressing plate (12) is equivalent to that of the first pressing plate (11) or larger than that of the first pressing plate (11); the inner diameter of the second pressing plate (12) is equivalent to the inner diameter of the first pressing plate (11) or smaller than the outer diameter of the first pressing plate (11).
8. A filter construction according to claim 6 wherein: a plurality of elastic pieces are sequentially sleeved layer by layer from the inner side to the outer side of the first pressing plate (11), the inner diameter of the innermost elastic piece is larger than that of the first pressing plate (11), and the outer diameter of the outermost elastic piece is smaller than that of the first pressing plate (11).
9. A filter construction according to claim 6 wherein: an elastic member is provided adjacent to the inner and outer side edges of the first presser plate (11), respectively.
10. A filter construction according to claim 6 wherein: the elastic piece is a spring (13) or an elastic sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022794581.4U CN213823761U (en) | 2020-11-27 | 2020-11-27 | Filter casing and filter structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022794581.4U CN213823761U (en) | 2020-11-27 | 2020-11-27 | Filter casing and filter structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213823761U true CN213823761U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022794581.4U Active CN213823761U (en) | 2020-11-27 | 2020-11-27 | Filter casing and filter structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213823761U (en) |
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2020
- 2020-11-27 CN CN202022794581.4U patent/CN213823761U/en active Active
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