CN216974969U

CN216974969U - Oil filter of well integrated relief valve

Info

Publication number: CN216974969U
Application number: CN202220485787.5U
Authority: CN
Inventors: 蒋海军
Original assignee: Suzhou Weifu Sealing Technology Co ltd
Current assignee: Suzhou Weifu Sealing Technology Co ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-07-15
Anticipated expiration: 2032-03-08

Abstract

The utility model relates to an oil filter for filtering engine oil, in particular to an oil filter with a middle pipe integrated safety valve, which comprises a base and an upper cover covering the base, wherein an oil filtering cavity for the engine oil to enter is formed between the base and the upper cover, an oil outlet hole is formed in the middle of the bottom surface of the base, an oil inlet hole is formed in the bottom of the base, the oil outlet hole and the oil inlet hole are both communicated with the oil filtering cavity, and a filter element is further arranged in the filtering cavity. When the engine oil is filtered, the engine oil with impurities outside enters the oil filtering cavity from the oil inlet, and is filtered by the filter element, and the filtered engine oil is discharged from the oil outlet. Wherein, the filter core includes filters the body and wears to establish the well pipe in filtering the body, and well pipe is movable for filtering the body, and the bottom and the oil outlet of well pipe are met. When the filter core became invalid, the well pipe was backed up to machine oil, and unfiltered machine oil got into from the gap department between well pipe and the filter body and filtered the body to flow from the oil outlet through well pipe.

Description

Oil filter of well integrated relief valve

Technical Field

The utility model relates to an oil filter for filtering engine oil of an engine, in particular to an oil filter with a safety valve integrated in a middle pipe.

Background

The function of an oil filter is to filter metal swarf, mechanical impurities and oil oxides from the oil, which, if they enter the lubrication system with the oil, will exacerbate the wear of the engine parts and may also block the oil lines or ducts.

The safety valve is generally installed in the oil filter, and when the surface impurities or dirt of a filter element in the oil filter are too much, the safety valve is opened. However, the safety valve is generally manufactured separately and installed at the bottom of the base, and the cost is relatively high.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the oil filter with the middle pipe integrated safety valve, and the manufacturing cost is reduced by integrating the middle pipe integrated safety valve.

In order to achieve the purpose, the utility model provides the following technical scheme:

an oil filter with a middle pipe integrated safety valve comprises:

the bottom of the base is provided with an oil inlet hole and an oil outlet hole;

the upper cover is covered on the base, and an oil filtering cavity is formed between the upper cover and the base; the filter element is arranged in the oil filtering cavity and comprises a filter body and a middle pipe penetrating through the filter body;

the top of the filtering body is provided with an oil drainage port communicated with the inside of the filtering body, the bottom of the middle pipe penetrates through the oil outlet hole, and the outer wall of the bottom end of the middle pipe is in sealing fit with the inner wall of the oil outlet hole; and a spring is arranged in the oil outlet hole, applies upward elastic force to the middle pipe and enables the top end of the middle pipe to plug the oil drainage port.

Preferably, a lower spherical surface is arranged in the oil drainage port, and an upper spherical surface corresponding to the lower spherical surface is arranged at the top end of the middle pipe.

Preferably, the top of filtering the body is equipped with first jack catch, be equipped with the cutting ferrule that is used for fixed first jack catch in the upper cover.

Preferably, a positioning groove is formed in the upper cover, and a positioning protrusion extending into the positioning groove is arranged at the top end of the middle pipe.

Preferably, be equipped with first step face in the oil outlet, be equipped with the second step face on the inner wall of well pipe, the top of spring supports on the second step face, the bottom of spring supports on first step face.

Preferably, a third step surface is arranged in the oil outlet, and a second clamping jaw used for abutting against the third step surface is arranged on the outer wall of the bottom end of the middle pipe.

Preferably, a first sealing ring is arranged between the outer wall of the bottom end of the middle pipe and the oil outlet.

Preferably, a second sealing ring is arranged between the bottom end of the filtering body and the oil outlet.

Compared with the prior art, the utility model has the advantages that:

(1) according to the utility model, the middle pipe is arranged to move relative to the filtering body, and when the engine oil pressure is too large, the middle pipe moves downwards, so that the unfiltered engine oil enters the filtering body and then flows back to the lubricating system through the oil outlet; in the scheme, the middle pipe plays a role of a safety valve, so that the condition that oil cannot flow back when the filter element fails is effectively prevented;

(2) through sphere under the draining mouth sets up, be equipped with the sphere on the top of well pipe, carry out the spherical seal through last sphere and sphere down to reach good sealed effect.

Drawings

FIG. 1 is a schematic view of an oil filter with a middle tube integrated relief valve according to an embodiment of the utility model;

FIG. 2 is a cross-sectional view of an oil filter with a middle tube integrated relief valve according to an embodiment of the present invention;

FIG. 3 is an exploded view of an oil filter with a middle tube integrated relief valve according to an embodiment of the present invention;

fig. 4 is an exploded view of a filter cartridge according to an embodiment of the present invention.

In the figure: 1. a base; 2. an upper cover; 3. an oil filtering cavity; 4. a filter element; 5. a middle tube; 6. a filter body; 7. a spring; 11. an oil outlet hole; 12. an oil inlet hole; 13. a first step surface; 14. a third step surface; 21. positioning a groove; 22. a card sleeve; 51. a spherical surface is arranged; 52. positioning the projection; 53. a second step surface; 54. a first seal ring; 55. a second jaw; 61. an upper end cover; 611. an oil drainage port; 612. a lower spherical surface; 613. a first jaw; 62. a lower end cover; 63. filtering paper; 64. a support framework; 65. and a second seal ring.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The utility model discloses an oil filter of a middle-tube integrated safety valve, which comprises a cylindrical base 1 with an upward opening and an upper cover 2 covering the base 1, wherein an oil filtering cavity 3 for engine oil to enter is formed between the base 1 and the upper cover 2, an oil outlet 11 is formed in the middle of the bottom surface of the base 1, an oil inlet 12 is formed in the bottom of the base 1, the oil outlet 11 and the oil inlet 12 are both communicated with the oil filtering cavity 3, and a filter element 4 is further arranged in the filtering cavity. When the engine oil is filtered, the engine oil with impurities outside enters the oil filtering cavity 3 from the oil inlet 12, and is filtered by the filter element 4, and the filtered engine oil is discharged from the oil outlet 11. Wherein, filter core 4 includes filters body 6 and wears to establish well pipe 5 in filtering body 6, and well pipe 5 is movable for filtering body 6, and the bottom and the oil outlet 11 of well pipe 5 meet. When the filter element 4 is invalid, the oil pressure in the oil filtering cavity 3 is too large, the engine oil can push the middle pipe 5 open, so that the middle pipe 5 moves relative to the filtering body 6, the unfiltered engine oil enters the filtering body 6 from the gap between the middle pipe 5 and the filtering body 6 and is discharged outwards from the oil outlet 11 at the bottom, the internal oil supply of the engine is ensured, and the damage of the engine caused by the inorganic oil lubrication of the engine due to the blockage of the filter element 4 is avoided.

Referring to fig. 2 and 3, the filter body 6 includes an upper end cover 61, a lower end cover 62 and a filter paper 63 disposed between the upper end cover 61 and the lower end cover 62, a supporting framework 64 is further disposed inside the filter body 6, the supporting framework 64 is in a hollow cylindrical shape, the top of the supporting framework 64 abuts against the upper end cover 61, and the bottom of the supporting framework supports the lower end cover 62, so as to prevent the filter paper 63 from being deformed inwards due to excessive external oil pressure when the filter paper 63 fails due to excessive impurities attached to the filter paper.

The middle pipe 5 is in a hollow round pipe shape with a downward opening, the bottom of the middle pipe 5 is connected with the oil outlet 11 and is in sealing fit with the oil outlet, so that engine oil needs to enter the oil outlet 11 through the middle pipe 5, a hole is formed in the middle pipe 5, the engine oil can conveniently enter the hollow interior of the middle pipe 5 from the hole, and threads are arranged on the outer wall of the middle pipe, and the engine oil can conveniently spread along the threads. The top of well pipe 5 supports on upper end cover 61 to the business turn over of control unfiltered oil, specifically, upper end cover 61's middle part has been seted up draining port 611, is equipped with down sphere 612 in the draining port 611, and the top of well pipe 5 gathers together and forms the pointed end to the centre, and well pipe 5 is the top at pointed end and is equipped with sphere 51, and the position of going up sphere 51 corresponds with sphere 612 down, and can carry out spherical seal with sphere 612 down.

In order to prevent the middle pipe 5 from being misplaced after moving up and down, a positioning groove 21 is arranged at the bottom end in the upper cover 2, and the positioning groove 21 is in a vertical cylindrical shape and the axial direction of the positioning groove is parallel to the moving direction of the middle pipe 5; the top of the middle pipe 5 is provided with a positioning protrusion 52, the positioning protrusion 52 is cylindrical, the diameter of the positioning protrusion 52 is smaller than that of the oil drainage opening 611 and slightly smaller than that of the positioning groove 21, and the positioning protrusion 52 penetrates through the oil drainage opening 611 and is inserted into the positioning groove 21 to complete the limiting.

Referring to fig. 2 and 4, the bottom end of the middle pipe 5 is provided with a spring 7, and the spring 7 applies upward elastic force to the middle pipe 5 and enables the top end of the middle pipe 5 to block the oil drain opening 611. Specifically, the spring 7 is arranged in the middle pipe 5 in a penetrating manner, a second step surface 53 is arranged at the position, close to the bottom end, of the inner wall of the middle pipe 5, and a first step surface 13 is arranged in the oil outlet hole 11; the top end of the spring 7 abuts against the second step surface 53, and the bottom end of the spring 7 abuts against the first step surface 13.

Referring to fig. 2 and 4, the top end of the filter body 6 is fastened to the upper cover 2, and the bottom end of the filter body 6 is inserted into the oil outlet 11. Specifically, the upper surface of the upper end cover 61 is provided with a plurality of first clamping jaws 613, the number of the first clamping jaws 613 is several, the plurality of first clamping jaws 613 are distributed at intervals, the plurality of first clamping jaws 613 are annularly arranged at the oil drainage port 611, and the jaw opening of each first clamping jaw 613 faces outwards; a clamping sleeve 22 is arranged at the bottom in the upper cover 2, the clamping sleeve 22 is a ring formed by a plurality of clamping claws, and the first clamping claw 613 is clamped in the clamping sleeve 22, so that the top of the filter body 6 is fixed.

Referring to fig. 2 and 4, the bottom surface middle part of lower extreme cover 62 forms annular bulge downwards, and it is sealed between annular bulge and the inner wall of oil outlet 11, specifically, be formed with the recess on the bellied outer wall of annular, the recess endotheca is equipped with second sealing washer 65, and the outer wall of second sealing washer 65 supports on the inner wall of oil outlet 11 to form sealedly.

Referring to fig. 2, the bottom end of the middle pipe 5 extends out of the lower end cover 62, a groove is formed on the outer wall of the middle pipe 5, a first sealing ring 54 is sleeved in the groove, and the outer wall of the first sealing ring 54 abuts against the inner wall of the oil outlet 11 to form sealing. In order to further fix the bottom end of the middle pipe 5, a third step surface 14 is arranged in the oil outlet hole 11, a second clamping jaw 55 for abutting against the third step surface 14 is arranged on the outer wall of the bottom end of the middle pipe 5, and the second clamping jaw 55 is clamped on the oil outlet hole 11 to form fixing of the bottom end of the middle pipe 5.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an oil cleaner of well integrated relief valve which characterized in that: the method comprises the following steps:

the bottom of the base (1) is provided with an oil inlet hole (12) and an oil outlet hole (11);

the upper cover (2) is covered on the base (1), and an oil filtering cavity (3) is formed between the upper cover and the base (1); and

the filter element (4) is arranged in the filter oil cavity (3) and comprises a filter body (6) and a middle pipe (5) which is arranged on the filter body (6) in a penetrating way;

the top of the filtering body (6) is provided with an oil drainage port (611) communicated with the inside of the filtering body, the bottom of the middle pipe (5) penetrates through the oil outlet hole (11), and the outer wall of the bottom end of the middle pipe (5) is in sealing fit with the inner wall of the oil outlet hole (11); a spring (7) is arranged in the oil outlet (11), the spring (7) applies upward elastic force to the middle pipe (5), and the top end of the middle pipe (5) is blocked with the oil drainage port (611).

2. The oil filter of the medium-pipe integrated safety valve according to claim 1, wherein: a lower spherical surface (612) is arranged in the oil drainage port (611), and an upper spherical surface (51) corresponding to the lower spherical surface (612) is arranged at the top end of the middle pipe (5).

3. The oil filter of the medium-pipe integrated safety valve according to claim 1, wherein: the top of filtering body (6) is equipped with first jack catch (613), be equipped with cutting ferrule (22) that are used for fixed first jack catch (613) in upper cover (2).

4. The oil filter of the medium-pipe integrated safety valve according to claim 1, wherein: a positioning groove (21) is arranged in the upper cover (2), and a positioning bulge (52) used for extending into the positioning groove (21) is arranged at the top end of the middle pipe (5).

5. The oil filter of the medium-pipe integrated safety valve according to claim 1, wherein: be equipped with first step face (13) in oil outlet (11), be equipped with second step face (53) on the inner wall of well pipe (5), the top of spring (7) supports on second step face (53), the bottom of spring (7) supports on first step face (13).

6. The oil filter of the medium-pipe integrated safety valve according to claim 1, wherein: and a third step surface (14) is arranged in the oil outlet hole (11), and a second clamping jaw (55) used for abutting against the third step surface (14) is arranged on the outer wall of the bottom end of the middle pipe (5).

7. The oil filter of the medium-pipe integrated safety valve according to claim 1, wherein: a first sealing ring (54) is arranged between the outer wall of the bottom end of the middle pipe (5) and the oil outlet (11).

8. The oil filter of the medium-pipe integrated safety valve according to claim 1, wherein: and a second sealing ring (65) is arranged between the bottom end of the filtering body (6) and the oil outlet (11).