Filter end cover structure

Abstract

The utility model relates to an end cover structure of a filter, which relates to the technical field of automobile engine oil filters and comprises a shell, a connecting cover, a sealing cover, a non-return mechanism, a filter element and a base, threads are arranged on the outer peripheral surface of the sealing cover and the inner peripheral surface of the shell, the sealing cover is in threaded connection with the interior of the shell, and an oil outlet is arranged on the sealing cover. An oil outlet pipe is fixedly arranged in the oil outlet, threads are formed in the oil outlet pipe, the filter element is arranged in the shell, the non-return mechanism is arranged between the filter element and the sealing cover and used for fixing the filter element and preventing engine oil from flowing back, the base is fixedly arranged in the shell, and the bottom of the filter element abuts against the base. The connecting cover is fixedly arranged at the top of the shell and abuts against the sealing cover, and the connecting cover and the sealing cover are each provided with a plurality of oil inlets. According to the utility model, the invalid filter element can be replaced, so that other parts, except the filter element, of the filter can be reused, the waste of resources is reduced, and the use cost of the filter is reduced.

Description

Technical Field

[0001] This application relates to the technical field of automotive oil filters, and particularly to a filter end cover structure. Background Art

[0002] During the operation of an automobile engine, the engine oil will be mixed with various different impurities, such as metal particles, suspended substances, water, carbon deposits, etc. These impurities will not only affect the service life of the engine oil, but also are very likely to damage the engine. Therefore, in order to improve the utilization rate and service life of the engine oil, and improve the service life of the engine, it is usually necessary to use a filter to filter and purify the engine oil in the automobile engine.

[0003] Currently, a Chinese utility model patent application with a publication date of May 24, 2022 and a publication number of CN216588761U provides a filter, including a filter element having a first end and a second end along the axis, a first end cover is provided at the first end of the filter element, a second end cover is provided at the second end of the filter element, and a filter medium through which fluid can pass is provided between the first end and the second end of the filter element; a housing having an opening along the axis; and a cover assembly having a first orifice and one or more second orifices along the axis and connected to the second end cover of the filter element and the opening of the housing to receive the filter element inside the housing, wherein the cover assembly is integrally formed with the second end cover.

[0004] In the related art filter, the cover assembly is connected to the outer shell by a non-removable snap connection. After the filter has been used for a period of time, the filter element will be unable to filter the engine oil any further due to excessive adsorption of impurities. At this time, the entire filter needs to be replaced, resulting in a high usage cost and waste of material resources. Summary of the Utility Model

[0005] The embodiments of this application provide a filter end cover structure, which can improve the technical problems in the related art that the entire filter needs to be replaced after the filter element fails, resulting in high filter usage cost and waste of resources.

[0006] The embodiments of this application provide a filter end cover structure, including: an outer shell, a connection cover, a sealing cover, a check mechanism, a filter element, and a base. Threads are provided on the outer peripheral surface of the sealing cover and the inner peripheral surface of the outer shell, and the sealing cover is threadedly connected inside the outer shell. An oil outlet is provided on the sealing cover. The filter element is arranged inside the outer shell. The check mechanism is arranged between the filter element and the sealing cover and is used to fix the filter element and prevent the engine oil from flowing back. The base is fixedly arranged inside the outer shell, and the bottom of the filter element abuts against the base. The connection cover is fixedly arranged on the top of the outer shell and abuts against the sealing cover. A plurality of oil inlets are provided on both the connection cover and the sealing cover.

[0007] In the embodiments of the present application, the above technical solutions have at least the following technical effects: The user can connect the filter to the corresponding installation position through the internal thread of the oil outlet pipe. The connection cover abuts and seals against the engine oil filter port. When the filter works, the oil containing impurities enters the interior of the housing through the oil inlet, and then returns to the engine interior through the oil outlet after being filtered by the filter element. The filter element will continuously adsorb the impurities contained in the oil. When the filter element can no longer effectively filter the oil due to excessive adsorption of impurities, the user can remove the filter, remove the connection cover, and then use a tool to screw out the sealing cover from the housing, then take out the filter element and clean the interior of the housing, then put a new filter element into the housing, screw back the sealing cover and install the connection cover, and then install the filter, without having to replace the entire filter, and other components of the filter except the filter element can be reused, reducing waste of resources and lowering the usage cost of the filter.

[0008] The filter end cover structure provided by the embodiments of the present application can replace the failed filter element, so that other components of the filter except the filter element can be reused, reducing waste of resources and lowering the usage cost of the filter.

[0009] In some embodiments, an oil inlet pipe is provided in each of the oil inlets, the oil inlet pipe is fixedly connected to the connection cover, a clamping strip is fixedly provided at the edge of the opening of the housing, and the edge of the connection cover is clamped with the clamping strip.

[0010] In some embodiments, a first sealing groove is formed in the connection cover, a first sealing ring is arranged inside the first sealing groove, second sealing grooves are formed in both the connection cover and the sealing cover, and second sealing rings are arranged inside the second sealing grooves.

[0011] In some embodiments, the check mechanism includes a check pad and a clamping ring. A clamping groove and a plurality of first through holes are formed in the clamping ring. The clamping ring and the check pad are both sleeved on the oil outlet pipe. The top of the filter element is clamped inside the clamping groove. One side of the check pad abuts against the sealing cover, and the other end of the check pad abuts against the clamping ring.

[0012] In some embodiments, a plurality of second through holes are formed in the bottom of the base, a mounting plate is fixedly provided on the inner peripheral surface of the base, a third through hole is formed in the mounting plate, and a bypass valve is arranged on the top of the mounting plate.

[0013] In some embodiments, the bypass valve includes a spring cylinder, a spring, and a piston plate. The opening of the spring cylinder is fixedly connected to the mounting plate. The spring cylinder is provided with a plurality of fourth through holes. The piston plate is slidably connected inside the spring cylinder. The bottom of the piston plate abuts against the mounting plate. The spring is arranged inside the spring cylinder. One end of the spring abuts against the spring cylinder, and the other end of the spring abuts against the piston plate.

[0014] In some embodiments, a limiting post is arranged inside the spring cylinder. The limiting post passes through the spring, and one end of the limiting post is fixedly connected to the spring cylinder. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of a filter end cap structure provided by an embodiment of the present application;

[0016] Figure 2 is a cross-sectional view of a filter end cap structure provided by an embodiment of the present application;

[0017] Figure 3 is Figure 2 an enlarged view of part A in

[0018] Figure 4 is Figure 2 an enlarged view of part B in

[0019] Among them, the reference numerals in the drawings are as follows:

[0020] 1. Outer shell; 11. Clamping strip; 2. Connection cover; 21. Oil inlet; 211. Oil inlet pipe; 22. First sealing groove; 221. First sealing ring; 23. Second sealing groove; 231. Second sealing ring; 3. Sealing cover; 31. Oil outlet; 311. Oil outlet pipe; 41. Check valve pad; 42. Clamping ring; 421. Clamping groove; 422. First through hole; 5. Filter element; 6. Base; 61. Second through hole; 62. Mounting plate; 621. Third through hole; 71. Spring cylinder; 711. Fourth through hole; 72. Spring; 73. Piston plate; 8. Limiting post. Detailed Description of the Embodiments

[0021] Based on this, in order to improve the technical problems in the related art that the entire filter needs to be replaced after the filter element fails, the filter has a high use cost and wastes resources, the embodiments of the present application provide the following solutions.

[0022] The following Figures 1 - 4 is a further detailed description of the present invention.

[0023] This embodiment discloses a filter end cap structure, which includes an outer shell 1, a connection cover 2, a sealing cover 3, a check mechanism, a filter element 5, and a base 6;

[0024] The outer peripheral surface of the sealing cover 3 and the inner peripheral surface of the outer shell 1 are both provided with threads. The sealing cover 3 is threadedly connected inside the outer shell 1. An oil outlet 31 is provided on the sealing cover 3. An oil outlet pipe 311 is fixedly arranged inside the oil outlet 31. Threads are provided inside the oil outlet pipe 311. The filter element 5 is arranged inside the outer shell 1. A check mechanism is arranged between the filter element 5 and the sealing cover 3 and is used for fixing the filter element 5 and preventing the engine oil from flowing back. The base 6 is fixedly arranged inside the outer shell 1. The bottom of the filter element 5 abuts against the base 6. The connecting cover 2 is fixedly arranged on the top of the outer shell 1 and abuts against the sealing cover 3. A plurality of oil inlet ports 21 are provided on both the connecting cover 2 and the sealing cover 3. Oil inlet pipes 211 are arranged inside the oil inlet ports 21. The oil inlet pipes 211 are fixedly connected to the connecting cover 2. A clamping strip 11 is fixedly arranged at the edge of the opening of the outer shell 1. The edge of the connecting cover 2 is clamped with the clamping strip 11;

[0025] A first sealing groove 22 is provided on the connecting cover 2. A first sealing ring 221 is arranged inside the first sealing groove 22. Second sealing grooves 23 are provided on both the connecting cover 2 and the sealing cover 3. Second sealing rings 231 are arranged inside the second sealing grooves 23;

[0026] The check mechanism includes a check pad 41 and a clamping ring 42. A clamping groove 421 and a plurality of first through holes 422 are provided on the clamping ring 42. Both the clamping ring 42 and the check pad 41 are sleeved on the oil outlet pipe 311. The top of the filter element 5 is clamped inside the clamping groove 421. One side of the check pad 41 abuts against the sealing cover 3. The other end of the check pad 41 abuts against the clamping ring 42.

[0027] As can be seen from the above, a filter end - cover structure provided by an embodiment of the present application enables a user to connect the filter to a corresponding installation position through the thread inside the oil outlet pipe 311. The connection cover 2 abuts against the oil filter port of the engine, and the first sealing ring 221 abuts against the oil filter port to form a seal, preventing oil leakage. When the filter is working, the oil containing impurities flows into the oil inlet 21 and the inside of the oil inlet pipe 211. After the oil contacts the check pad 41, it exerts pressure on the check pad 41. Under the action of the pressure, the check pad 41 folds towards the inside of the housing 1 to open the oil inlet 21, and the oil flows into the inside of the housing 1 through the oil inlet 21 and the first through - hole 422. The second sealing ring 231 can abut against and seal the sealing cover 3 and the connection cover 2 to prevent oil from leaking through the gap between the sealing cover 3 and the connection cover 2. After the oil flows into the inside of the housing 1 and passes through the filter element 5, the impurities contained in the oil are filtered out by the filter element 5. The oil filtered by the filter element 5 enters the inside of the filter element 5 and returns to the engine through the oil outlet 31. When the engine stops running, the oil located inside the housing 1 may flow back. At this time, the check pad 41 abuts against and seals the sealing cover 3 under the action of the reverse pressure of the oil, and the oil inlet 21 is closed to prevent the oil from flowing back into the engine through the oil inlet 21. This can ensure that a certain amount of oil is stored inside the filter, enabling the filter to quickly enter the flow - able state when the engine is started next time, which helps the engine start. The filter element 5 continuously adsorbs the impurities contained in the oil. When the filter element 5 can no longer effectively filter the oil due to excessive adsorption of impurities, the user can unscrew the filter from the engine, then fix the housing 1 and pull the edge of the connection cover 2. The edge of the connection cover 2 will deform and disengage from the clamping strip 11. Then use a tool to turn the sealing cover 3 and remove the sealing cover 3 from the inside of the housing 1. Immediately afterwards, take out the check pad 41, the clamping ring 42, and the filter element 5, and then clean the inside of the housing 1. After cleaning, place a new filter element 5 inside the housing 1, make the bottom of the filter element 5 engage with the base 6, then put the clamping ring 42 in and make the clamping groove 421 engage with the top of the filter element 5. Then put the check pad 41 in and make the opening in the middle of the check pad 41 align with the opening between the clamping ring 42. Then put the sealing cover 3 in, make the oil outlet pipe 311 pass through the clamping ring 42 and the check pad 41 and tighten the sealing cover 3. Then align the oil inlet pipes 211 on the connection cover 2 with the respective oil inlets 21 on the sealing cover 3 and press the connection cover 2. The edge of the connection cover 2 will engage with the clamping strip 11 to fix the connection cover 2, and the oil inlet pipes 211 are all inserted into the oil inlets 21. At this time, the replacement of the filter element 5 is completed. Then install the filter again to continue using it, without having to replace the entire filter, and the other components of the filter except the filter element 5 can be reused, reducing waste of resources and lowering the use cost of the filter.

[0028] In some embodiments, please also refer to Figure 2 and Figure 4, a plurality of second through holes 61 are formed in the bottom of the base 6, a mounting plate 62 is fixedly arranged on the inner peripheral surface of the base 6, a third through hole 621 is formed in the mounting plate 62, and a bypass valve is arranged on the top of the mounting plate 62;

[0029] The bypass valve includes a spring cylinder 71, a spring 72 and a piston plate 73. The opening of the spring cylinder 71 is fixedly connected to the mounting plate 62. A plurality of fourth through holes 711 are formed in the spring cylinder 71. The piston plate 73 is slidably connected inside the spring cylinder 71. The bottom of the piston plate 73 abuts against the mounting plate 62. The spring 72 is arranged inside the spring cylinder 71. One end of the spring 72 abuts against the spring cylinder 71, and the other end of the spring 72 abuts against the piston plate 73. A limiting column 8 is arranged inside the spring cylinder 71. The limiting column 8 passes through the spring 72, and one end of the limiting column 8 is fixedly connected to the spring cylinder 71.

[0030] With such a setting, after the engine oil enters the interior of the housing 1, it will enter the interior of the base 6 through the second through holes 61 and apply pressure to the piston plate 73 through the third through hole 621. The piston plate 73 maintains the abutting state with the mounting plate 62 under the pressure of the spring 72 to seal the third through hole 621, and the engine oil cannot pass through the third through hole 621; when the filter element 5 adsorbs too many impurities or when the engine oil has poor fluidity at a low temperature, it is difficult for the engine oil to pass through the filter element 5, which will cause the engine oil to be blocked inside the filter, and it is difficult for the engine to start; when the oil pressure inside the housing 1 reaches a certain level, the pressure of the engine oil on the piston plate 73 is greater than the pressure of the spring 72 on the piston plate 73. The piston plate 73 slides upward inside the spring 72 groove and compresses the spring 72, and the third through hole 621 is opened. The engine oil enters the interior of the filter element 5 through the third through hole 621 and the fourth through holes 711 and enters the engine interior through the oil outlet 31, so that the engine can start normally, and the engine can be started emergently in special cases, avoiding the problem that the engine is difficult to start due to blockage inside the filter; the limiting column 8 can prevent the spring 72 from deviating from the center position of the spring cylinder 71 due to shaking, causing uneven force on the piston plate 73 and resulting in side leakage.

[0031] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A filter end cap structure, characterized in that: It includes a housing (1), a connection cover (2), a sealing cover (3), a check mechanism, a filter element (5), and a base (6). Threads are provided on the outer peripheral surface of the sealing cover (3) and the inner peripheral surface of the housing (1). The sealing cover (3) is threadedly connected inside the housing (1). An oil outlet (31) is provided on the sealing cover (3), and an oil outlet pipe (311) is fixedly arranged inside the oil outlet (31). Threads are provided inside the oil outlet pipe (311). The filter element (5) is arranged inside the housing (1). The check mechanism is arranged between the filter element (5) and the sealing cover (3) and is used to fix the filter element (5) and prevent the engine oil from flowing back. The base (6) is fixedly arranged inside the housing (1). The bottom of the filter element (5) abuts against the base (6). The connection cover (2) is fixedly arranged on the top of the housing (1) and abuts against the sealing cover (3). A plurality of oil inlet ports (21) are provided on both the connection cover (2) and the sealing cover (3).

2. The structure of a filter end cap according to claim 1, wherein: An oil inlet pipe (211) is arranged inside each of the oil inlet ports (21). The oil inlet pipe (211) is fixedly connected to the connection cover (2). A clamping strip (11) is fixedly arranged at the edge of the opening of the housing (1). The edge of the connection cover (2) is clamped with the clamping strip (11).

3. The structure of a filter end cap according to claim 2, characterized in that: A first sealing groove (22) is provided on the connection cover (2), and a first sealing ring (221) is arranged inside the first sealing groove (22). Second sealing grooves (23) are provided on both the connection cover (2) and the sealing cover (3), and second sealing rings (231) are arranged inside the second sealing grooves (23).

4. A filter end cap structure according to any one of claims 1-3, characterized in that: The check mechanism includes a check pad (41) and a clamping ring (42). A clamping groove (421) and a plurality of first through holes (422) are provided on the clamping ring (42). Both the clamping ring (42) and the check pad (41) are sleeved on the oil outlet pipe (311). The top of the filter element (5) is clamped inside the clamping groove (421). One side of the check pad (41) abuts against the sealing cover (3), and the other end of the check pad (41) abuts against the clamping ring (42).

5. A filter end cap structure according to claim 4, characterized in that: A plurality of second through holes (61) are provided at the bottom of the base (6). A mounting plate (62) is fixedly arranged on the inner peripheral surface of the base (6). A third through hole (621) is provided on the mounting plate (62). A bypass valve is arranged on the top of the mounting plate (62).

6. The structure of a filter end cap according to claim 5, characterized in that: The bypass valve includes a spring cylinder (71), a spring (72), and a piston plate (73). The opening of the spring cylinder (71) is fixedly connected to the mounting plate (62). A plurality of fourth through holes (711) are provided on the spring cylinder (71). The piston plate (73) is slidably connected inside the spring cylinder (71). The bottom of the piston plate (73) abuts against the mounting plate (62). The spring (72) is arranged inside the spring cylinder (71). One end of the spring (72) abuts against the spring cylinder (71), and the other end of the spring (72) abuts against the piston plate (73).

7. A filter end cap structure according to claim 6, characterized in that: A limiting post (8) is arranged inside the spring cylinder (71), the limiting post (8) is arranged inside a spring (72), and one end of the limiting post (8) is fixedly connected to the spring cylinder (71).

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