Filter convenient to replace

Abstract

The utility model discloses a filter convenient to replace, relates to the technical field of filters, and solves the problems that when an automobile is used for a long time, an elastic tongue piece is still likely to loosen, and the sealing performance between a top cover and a shell is reduced. An inner sealing ring is fixedly installed on the inner bottom wall of the shell, and the outer side face of the inner sealing ring is in threaded connection with the inner wall of the shell. The threaded cover plate is in threaded connection with the outer shell, the outer side face of the inner sealing ring is in threaded connection with the inner wall of the outer shell, and therefore the sealing performance and stability of connection between the threaded cover plate and the outer shell are improved, and meanwhile the clamping block is connected with the annular clamping groove in the inner side face of the outer shell under the action of the spring. The connecting stability between the shell and the threaded cover plate is further improved, the situation that the shell and the threaded cover plate are possibly loosened when an automobile runs on a bumpy road surface is reduced, and the problems that a filter is poor in sealing performance and short in service life are solved.

Description

Technical Field

[0001] The utility model relates to the field of filters, in particular to a filter which is easy to replace. Background Art

[0002] At present, in the automotive industry, the filter is one of the important components to ensure the normal operation of the engine. Its cleanliness directly affects the working efficiency and life of the engine. Its function is to filter out harmful impurities in the oil from the oil pan and supply clean oil to moving parts such as the crankshaft and connecting rod to play a role in lubrication, cooling and cleaning.

[0003] A Chinese utility model (publication number: CN106907277B) discloses a filter, including a cup-shaped shell and a top cover, wherein the top cover and the cup-shaped shell are detachably connected, and an elastic tongue is provided on the side wall of the cup-shaped shell for limiting the top cover, and further comprising a protective structure, wherein the protective structure is provided on the outside of the elastic tongue and at least partially surrounds the elastic tongue to prevent the elastic tongue from being excessively bent outward.

[0004] In the process of realizing the present utility model, the inventors discovered that there are at least the following problems in this technology: the top cover and the shell are connected and fixed by an elastic tongue. Although a protective mechanism is designed on the outer side of the elastic tongue to protect the elastic tongue from excessive bending, the car will inevitably drive on some bumpy roads. After long-term use, the elastic tongue may still become loose, resulting in a decrease in the sealing between the top cover and the shell. Therefore, a filter that is easy to replace is now proposed. Utility Model Content

[0005] In order to improve the problem that the elastic tongue may become loose during long-term use of the automobile, resulting in a decrease in the sealing performance between the top cover and the housing, the utility model provides a filter that is easy to replace.

[0006] The utility model provides a filter that is easy to replace, which adopts the following technical solutions:

[0007] A filter that is easy to replace, comprising a shell, a threaded cover plate is provided on the top of the shell, an inner sealing ring is fixedly installed on the inner top wall of the shell, the outer side surface of the inner sealing ring is threadedly connected to the inner wall of the shell, a spring is fixedly installed inside the inner sealing ring, a clamping block is fixedly installed on one end of the spring, an annular clamping groove that is adapted to the clamping block is provided on the inner side surface of the shell, an extrusion rod is slidably connected to the interior of the inner sealing ring above the clamping block, a roller is installed on one end of the extrusion rod, an inclined groove that is adapted to the roller is provided inside the clamping block, the roller is arranged inside the inclined groove, an inner groove is provided on the top of the threaded cover plate, and an end of the extrusion rod away from the roller passes through the inner groove;

[0008] An oil inlet is provided on the top of the threaded cover plate, an oil outlet pipe is fixedly installed on the middle portion of the upper surface of the threaded cover plate, and a filter element is threadedly connected to the outer surface of the oil outlet pipe.

[0009] By adopting the above technical solution, when in use, the engine oil from the oil pan can enter the interior of the outer shell through the oil inlet, the filter element can filter out harmful impurities in the engine oil, and the filtered engine oil can flow back to the oil shell through the oil outlet pipe. The threaded cover is threadedly connected to the outer shell, and the outer side surface of the inner sealing ring is threadedly connected to the inner wall of the outer shell, which increases the sealing and stability of the connection between the threaded cover and the outer shell. At the same time, the clamping block is connected to the annular clamping groove on the inner side of the outer shell under the action of the spring, further increasing the stability of the connection between the outer shell and the threaded cover, reducing the possibility of loosening between the outer shell and the threaded cover when the car is driving on bumpy roads, and solving the problems of poor sealing and short service life of the filter.

[0010] Optionally, a first sealing gasket is provided on the inner wall of the inner groove opened on the top of the threaded cover plate, a pulling groove is opened on the top of the first sealing gasket, and a pull tab is fixedly installed on the inner bottom wall of the pulling groove opened on the top of the first sealing gasket.

[0011] By adopting the above technical solution, the first sealing gasket can reduce the impact of the external environment on the internal structure of the inner groove, so that the internal structure of the inner groove remains clean.

[0012] Optionally, a first sliding block is fixedly mounted on the bottom of the clamping block, and a first sliding groove adapted to the first sliding block is provided inside the inner sealing ring.

[0013] By adopting the above technical solution, the first sliding block and the first sliding groove can support the card block and make the card block move more smoothly.

[0014] Optionally, the filter element includes an upper end face, which is threadedly connected to the oil outlet pipe, and a through groove connected to the oil outlet pipe is opened inside the upper end face, a filter core is fixedly installed on one side of the upper end face, and a lower end face is fixedly installed on the side of the filter core away from the upper end face, and the lower end face is in contact with the inner bottom wall of the outer shell.

[0015] By adopting the above technical solution, the filter element can filter out harmful impurities in the engine oil during use.

[0016] Optionally, an elastic rope is fixedly mounted on the inner side surface of the first sealing gasket, and one end of the elastic rope away from the first sealing gasket is fixedly connected to the inner bottom wall of the inner groove.

[0017] By adopting the above technical solution, when the first sealing pad is opened, the elastic rope can restrain the first sealing pad, thereby reducing the possibility of the first sealing pad being lost.

[0018] Optionally, second sliding blocks are fixedly mounted on opposite sides of the extrusion rod, and a second sliding groove adapted to the second sliding blocks is provided inside the inner sealing ring.

[0019] By adopting the above technical solution, the second sliding block and the second sliding groove can limit the moving range of the extrusion rod and at the same time make the extrusion rod move more smoothly.

[0020] Optionally, an end of the clamping block away from the spring is provided with a guide angle inclined downward.

[0021] By adopting the above technical solution, when installing the threaded cover, the outer shell can push the clamping block to move through the guide angle, so that the threaded cover and the inner sealing ring can be quickly connected to the outer shell.

[0022] Optionally, an annular sealing gasket is fixedly installed on the bottom of the inner sealing ring.

[0023] By adopting the above technical solution, the annular sealing gasket can further improve the sealing between the inner sealing ring and the outer shell.

[0024] In summary, the present invention has the following beneficial effects:

[0025] 1. When the utility model is in use, the engine oil from the oil pan can enter the interior of the housing through the oil inlet, the filter element can filter out harmful impurities in the engine oil, and the filtered engine oil can flow back to the oil tank through the oil outlet pipe. The threaded cover is threadedly connected to the housing, and the outer side of the inner sealing ring is threadedly connected to the inner wall of the housing, which improves the sealing and stability of the connection between the threaded cover and the housing. At the same time, the clamping block is connected to the annular clamping groove on the inner side of the housing under the action of the spring, further improving the stability of the connection between the housing and the threaded cover, reducing the possibility of loosening between the housing and the threaded cover when the car is driving on bumpy roads, and solving the problems of poor sealing and short service life of the filter;

[0026] 2. When the threaded cover needs to be opened, the staff can pull out the first sealing gasket through the pull tab, and then press the extrusion rod to move downward. The extrusion rod can push the roller to move downward. The roller can push the card block to squeeze the spring and separate from the annular card groove on the inner side of the shell with the cooperation of the inclined slide groove. Then the staff can rotate and unscrew the threaded cover. The operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model.

[0028] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0029] Figure 3 This is a schematic structural diagram of the first sealing gasket of the utility model.

[0030] Figure 4 It is a schematic diagram of the structure of the filter element of the present utility model.

[0031] Description of reference numerals:

[0032] 1. Outer casing; 2. Threaded cover plate; 3. Inner sealing ring; 4. Spring; 5. Block; 6. Extrusion rod; 7. Roller; 8. Oil inlet; 9. Oil outlet pipe; 10. Filter element; 101. Upper end face; 102. Filter element; 103. Lower end face; 11. First sealing gasket; 12. Pull tab; 13. First slider; 14. Elastic rope; 15. Second slider; 16. Guide angle; 17. Ring sealing gasket. DETAILED DESCRIPTION

[0033] The following is in conjunction with the appended drawings in the embodiment of the present utility model. Figure 1-4 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0034] Please refer to Figure 1 A filter that is easy to replace includes a shell 1, a threaded cover plate 2 is provided on the top of the shell 1, an inner sealing ring 3 is fixedly installed on the inner top wall of the shell 1, and an annular sealing gasket 17 is fixedly installed on the bottom of the inner sealing ring 3. The annular sealing gasket 17 can further increase the sealing between the inner sealing ring 3 and the shell 1, thereby extending the service life of the filter.

[0035] Please refer to Figure 1 and Figure 2 The outer side of the inner sealing ring 3 is threadedly connected to the inner wall of the outer shell 1. A spring 4 is fixedly installed inside the inner sealing ring 3, and a clamping block 5 is fixedly installed at one end of the spring 4. The inner side of the outer shell 1 has an annular groove that matches the clamping block 5. When the clamping block 5 and the annular groove are connected, they can limit the position of the inner sealing ring 3. A first slider 13 is fixedly installed at the bottom of the clamping block 5. A first slide groove that matches the first slider 13 is defined inside the inner sealing ring 3. The first slider 13 and the first slide groove support the clamping block 5 and ensure smoother movement of the clamping block 5.

[0036] Please refer to Figure 1 and Figure 2The inner sealing ring 3 is located above the block 5 and is slidably connected to the extrusion rod 6. Second sliders 15 are fixedly installed on opposite sides of the extrusion rod 6. A second slide groove adapted to the second slider 15 is opened inside the inner sealing ring 3. The second slider 15 and the second slide groove can limit the moving range of the extrusion rod 6 and make the extrusion rod 6 move more smoothly.

[0037] Please refer to Figure 1 and Figure 2 A roller 7 is mounted on one end of the extrusion rod 6. An inclined chute adapted for the roller 7 is provided inside the block 5. The roller 7 is disposed inside the inclined chute, and the roller 7 can push the block 5 to move through the inclined chute. An inner groove is provided on the top of the threaded cover plate 2. The end of the extrusion rod 6 away from the roller 7 extends into the inner groove. A downwardly inclined guide angle 16 is provided on the end of the block 5 away from the spring 4. When the threaded cover plate 2 is installed, the housing 1 can push the block 5 to move through the guide angle 16, thereby enabling the threaded cover plate 2 and the inner sealing ring 3 to be quickly connected to the housing 1. When the threaded cover plate 2 needs to be opened, the staff can press the extrusion rod 6 downward. The extrusion rod 6 can drive the roller 7 downward with the cooperation of the second slider 15 and the second chute. The roller 7 can push the block 5 to squeeze the spring 4 and separate from the annular groove on the inner side of the housing 1 with the cooperation of the inclined chute. The staff can then rotate and unscrew the threaded cover plate 2.

[0038] Please refer to Figure 1-3 The inner wall of the inner groove formed at the top of the threaded cover plate 2 is provided with a first sealing gasket 11. A pull-out groove is formed at the top of the first sealing gasket 11. A pull tab 12 is fixedly mounted on the inner bottom wall of the pull-out groove formed at the top of the first sealing gasket 11. The first sealing gasket 11 can reduce the impact of the external environment on the internal structure of the inner groove, thereby keeping the internal structure of the inner groove clean. An elastic cord 14 is fixedly mounted on the inner side surface of the first sealing gasket 11. The end of the elastic cord 14 away from the first sealing gasket 11 is fixedly connected to the inner bottom wall of the inner groove. When the first sealing gasket 11 is opened, the elastic cord 14 can restrain the first sealing gasket 11, thereby preventing the first sealing gasket 11 from being lost.

[0039] Please refer to Figure 1 and Figure 4An oil inlet 8 is provided at the top of the threaded cover plate 2, and an oil outlet pipe 9 is fixedly mounted in the middle of the upper surface of the threaded cover plate 2. A filter element 10 is threadedly connected to the outer surface of the oil outlet pipe 9. When in use, the engine oil from the oil pan can enter the interior of the housing 1 through the oil inlet 8. The filter element 10 can filter out harmful impurities in the engine oil, and the filtered engine oil can flow back into the oil pan through the oil outlet pipe 9. The filter element 10 includes an upper end face 101, which is threadedly connected to the oil outlet pipe 9. A through groove connected to the oil outlet pipe 9 is provided inside the upper end face 101. A filter element 102 is fixedly mounted on one side of the upper end face 101. A lower end face 103 is fixedly mounted on the side of the filter element 102 away from the upper end face 101. The lower end face 103 contacts the inner bottom wall of the housing 1. The filter element 102 is made of a metal mesh, which can filter solid particle impurities in the engine oil.

[0040] The implementation principle of the utility model is as follows: through the design of the housing 1, the threaded cover plate 2, the inner sealing ring 3, the spring 4, the block 5, the extrusion rod 6, the roller 7, the oil inlet 8, the oil outlet pipe 9, the filter element 10, the upper end surface 101, the filter element 102, the lower end surface 103, the first sealing gasket 11, the pull tab 12, the first slider 13, the elastic rope 14, the second slider 15, the guide angle 16 and the annular sealing gasket 17, when in use, the engine oil from the oil pan can enter the interior of the housing 1 through the oil inlet 8, the filter element 102 can filter out harmful impurities in the engine oil, and after filtration The oil can flow back to the oil casing through the oil outlet pipe 9. The threaded cover plate 2 is threadedly connected to the outer shell 1. The outer side of the inner sealing ring 3 is threadedly connected to the inner wall of the outer shell 1, which increases the sealing and stability of the connection between the threaded cover plate 2 and the outer shell 1. At the same time, the clamping block 5 is connected to the annular clamping groove on the inner side of the outer shell 1 under the action of the spring 4, further increasing the stability of the connection between the outer shell 1 and the threaded cover plate 2, reducing the possibility of loosening between the outer shell 1 and the threaded cover plate 2 when the car is driving on a bumpy road, and solving the problems of poor sealing and short service life of the filter.

[0041] When it is necessary to open the threaded cover 2, the staff can pull out the first sealing gasket 11 through the pull tab 12, and then press the extrusion rod 6 to move downward. The extrusion rod 6 can drive the roller 7 to move downward with the cooperation of the second slider 15 and the second slide groove. The roller 7 can push the block 5 to squeeze the spring 4 and separate from the annular groove on the inner side of the shell 1 with the cooperation of the inclined slide groove. After that, the staff can rotate and unscrew the threaded cover 2. The operation is simple and convenient.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A filter that is easy to replace, comprising a housing (1), characterized in that: The top of the shell (1) is provided with a threaded cover plate (2), the inner top wall of the shell (1) is fixedly installed with an inner sealing ring (3), the outer side surface of the inner sealing ring (3) is threadedly connected to the inner wall of the shell (1), the inner surface of the inner sealing ring (3) is fixedly installed with a spring (4), one end of the spring (4) is fixedly installed with a clamping block (5), the inner side surface of the shell (1) is provided with an annular clamping groove adapted to the clamping block (5), the interior of the inner sealing ring (3) is slidably connected with an extrusion rod (6) above the clamping block (5), one end of the extrusion rod (6) is provided with a roller (7), the interior of the clamping block (5) is provided with an inclined groove adapted to the roller (7), the roller (7) is arranged inside the inclined groove, the top of the threaded cover plate (2) is provided with an inner groove, and the end of the extrusion rod (6) away from the roller (7) passes through the inner groove; An oil inlet (8) is provided at the top of the threaded cover plate (2), an oil outlet pipe (9) is fixedly mounted in the middle of the upper surface of the threaded cover plate (2), and a filter element (10) is threadedly connected to the outer surface of the oil outlet pipe (9).

2. The filter that is easy to replace according to claim 1, characterized in that: A first sealing gasket (11) is provided on the inner wall of the inner groove formed on the top of the threaded cover plate (2), a pulling groove is formed on the top of the first sealing gasket (11), and a pull tab (12) is fixedly mounted on the inner bottom wall of the pulling groove formed on the top of the first sealing gasket (11).

3. The filter that is easy to replace according to claim 1, characterized in that: A first sliding block (13) is fixedly mounted on the bottom of the clamping block (5), and a first sliding groove adapted to the first sliding block (13) is provided inside the inner sealing ring (3).

4. The filter that is easy to replace according to claim 1, characterized in that: The filter element (10) includes an upper end surface (101), the upper end surface (101) is threadedly connected to the oil outlet pipe (9), a through groove connected to the oil outlet pipe (9) is provided inside the upper end surface (101), a filter element (102) is fixedly mounted on one side of the upper end surface (101), and a lower end surface (103) is fixedly mounted on the side of the filter element (102) away from the upper end surface (101), and the lower end surface (103) is in contact with the inner bottom wall of the housing (1).

5. The filter that is easy to replace according to claim 2, characterized in that: An elastic cord (14) is fixedly mounted on the inner side surface of the first sealing gasket (11), and one end of the elastic cord (14) away from the first sealing gasket (11) is fixedly connected to the inner bottom wall of the inner groove.

6. The filter that is easy to replace according to claim 1, characterized in that: Second sliding blocks (15) are fixedly mounted on opposite sides of the extrusion rod (6), and a second sliding groove adapted to the second sliding blocks (15) is provided inside the inner sealing ring (3).

7. The filter that is easy to replace according to claim 1, characterized in that: An end of the clamping block (5) away from the spring (4) is provided with a guide angle (16) inclined downward.

8. The filter that is easy to replace according to claim 1, characterized in that: An annular sealing gasket (17) is fixedly mounted on the bottom of the inner sealing ring (3).

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