CN111997712A

CN111997712A - Filter element assembly and rotary oil-gas separator

Info

Publication number: CN111997712A
Application number: CN202010922054.9A
Authority: CN
Inventors: 王军; 何骁; 袁建军; 王珺
Original assignee: Shanghai Fleetguard Filter Co ltd
Current assignee: Shanghai Fleetguard Filter Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2020-11-27

Abstract

The invention relates to the technical field of rotary oil-gas separators, and discloses a filter element assembly and a rotary oil-gas separator. The filter element assembly is arranged in a shell of the rotary oil-gas separator, an inlet, an outlet and an oil outlet are arranged on the shell, a gap is arranged between the filter element assembly and the shell, the filter element assembly comprises a primary filter element and a secondary filter element, the primary filter element is arranged between the inlet and the outlet, and gas entering from the inlet can enter the gap through the primary filter element and flow out of the outlet; the secondary filter element is arranged between the inlet and the outlet, part of gas in the gap can flow out of the outlet after passing through the secondary filter element, and engine oil in the gas flows down along the inner wall of the shell and flows out of the oil outlet. The secondary filter element is arranged on the basis of the primary filter element, so that part of gas can be subjected to secondary filtration, and secondary filtration is performed while the gas is subjected to primary filtration, so that the filtration efficiency of the rotary oil-gas separator is improved, the cleanliness of the filtered gas is improved, and the emission standard is met.

Description

Filter element assembly and rotary oil-gas separator

Technical Field

The invention relates to the technical field of rotary oil-gas separators, in particular to a filter element assembly and a rotary oil-gas separator.

Background

With the issuance and implementation of the emission regulation of the national six, the emission of the crankcase ventilation system is taken into the whole vehicle emission test project, and the discharged gas has important influence on the Particulate Matter (PM) and the Particle Number (PN) discharged by the whole vehicle, so that the crankcase ventilation gas needs to be filtered by the oil-gas separator to intercept the particulate matter therein and reduce the particle number to achieve the aims of lightening the burden of the whole vehicle emission and meeting the emission standard of the national six. The efficiency of the filter element assembly of the traditional oil-gas separator is not high enough, and the higher emission requirement cannot be met.

Therefore, a filter cartridge assembly is needed to solve the above problems.

Disclosure of Invention

Based on the above, the present invention provides a filter element assembly and a rotary oil-gas separator, which have high filtering efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a filter core assembly, sets up in the casing of rotatory oil and gas separator, be provided with import, export and oil-out on the casing, filter core assembly with be provided with the clearance between the casing, include:

a primary filter element disposed between the inlet and the outlet, gas entering from the inlet being able to enter the gap via the primary filter element and exit the outlet;

the secondary filter element is arranged between the inlet and the outlet, part of gas in the gap can flow out of the outlet after passing through the secondary filter element, and engine oil in the gas flows down along the inner wall of the shell and flows out of the oil outlet.

As a preferred scheme of filter core assembly, still include the pivot, the pivot pass through the bearing transmission set up in the oil outlet, first filter core with the secondary filter core wears to locate in proper order in the pivot, and the machine oil of straining crosses and flows out through the bearing the oil outlet.

As a preferable scheme of the filter element assembly, the primary filter element comprises a top plate and at least two middle plates which are sequentially stacked from the inlet to the secondary filter element, and the secondary filter element comprises a secondary bottom plate and a bottom plate which are sequentially stacked from the primary filter element to the outlet;

the gas can pass through the top sheet and the middle sheet, the adjacent two middle sheets, the middle sheet and the upper part of the secondary bottom sheet, and part of the gas can pass through the lower part of the secondary bottom sheet and the bottom sheet.

As a preferred scheme of the filter element assembly, the top sheet, the middle sheet, the secondary bottom sheet and the bottom sheet are all provided with through holes, the rotating shaft penetrates through the through holes, and the through holes are further provided with limiting grooves.

Preferably, the top sheet and the middle sheet are provided with spokes.

As a preferable scheme of the filter element assembly, one ends of the middle sheet, the secondary bottom sheet and the bottom sheet, which are close to the inlet, are provided with first ribs;

one ends of the middle sheet and the secondary bottom sheet close to the outlet are provided with second ribs;

and a filtering channel is arranged between the adjacent first rib and the second rib, and gas can pass through the filtering channel.

As a preferable scheme of the filter element assembly, the first rib comprises a first annular rib arranged along the circumferential direction of the through hole and a radial rib arranged along the radial direction of the through hole;

the second muscle includes along the second annular muscle that through-hole circumference set up with follow the radial setting of through-hole and with radial muscle complex radial groove.

As a preferable proposal of the filter element assembly, one end of the secondary bottom plate close to the outlet is provided with a second radial rib.

As a preferred scheme of the filter element assembly, the filter element assembly further comprises a filter element base, wherein the rotating shaft penetrates through the filter element base, and the filter element base is provided with an oil outlet hole communicated with the gap and the oil outlet, an air outlet hole communicated with the outlet and an air inlet window communicated with the gap and the air outlet hole.

A rotary oil-gas separator comprises the filter element assembly in any scheme.

The invention has the beneficial effects that: the primary filter element is arranged between the inlet and the outlet, so that the gas is filtered; furthermore, a secondary filter element is arranged on the basis of the primary filter element, so that part of gas can be subjected to secondary filtration, and the gas is subjected to secondary filtration while being subjected to primary filtration, so that the filtration efficiency of the rotary oil-gas separator is improved, particulate matters in the gas can be filtered as far as possible, and the cleanliness of the filtered gas is improved to meet the emission standard.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a rotary oil and gas separator according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cartridge base of a cartridge assembly according to an embodiment of the present invention;

FIG. 3 is an enlarged partial schematic view at A of FIG. 1;

FIG. 4 is a schematic view of a top panel of a filter cartridge assembly according to an embodiment of the present invention;

FIG. 5 is an elevation view of a center panel of a filter cartridge assembly according to an embodiment of the present invention;

FIG. 6 is a rear view of a center panel of a filter cartridge assembly according to an embodiment of the present invention;

FIG. 7 is an elevation view of a secondary bottom panel of a filter cartridge assembly according to an embodiment of the present invention;

FIG. 8 is a rear view of a secondary bottom panel of a filter cartridge assembly according to an embodiment of the present invention;

fig. 9 is a schematic view of a bottom sheet of a filter cartridge assembly according to an embodiment of the present invention.

In the figure:

100. a housing; 101. an inlet; 102. an outlet; 103. a gap;

1. a rotating shaft; 11. a bearing;

21. a topsheet; 22. an intermediate sheet;

31. a secondary negative film; 32. a negative film;

41. a through hole; 411. a limiting groove; 42. a spoke; 431. a first annular rib; 432. a radial rib; 441. a second annular rib; 442. a radial slot; 443. a second radial rib; 45. a filtration channel;

5. a filter element base; 51. an oil outlet hole; 52. an air outlet; 53. an air intake window.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a filter element assembly for a rotary oil-gas separator, the filter element assembly is disposed in a housing 100 of the rotary oil-gas separator, the housing 100 is provided with an inlet 101, an outlet 102 and an oil outlet, a gap 103 is disposed between the filter element assembly and the housing 100, the filter element assembly includes a primary filter element and a secondary filter element, wherein the primary filter element is disposed between the inlet 101 and the outlet 102, and gas entering from the inlet 101 can enter the gap 103 and flow out of the outlet 102 through the primary filter element; the secondary filter element is arranged between the inlet 101 and the outlet 102, part of the gas in the gap 103 can flow out of the outlet 102 after passing through the secondary filter element, and the engine oil in the gas flows down along the inner wall of the shell 100 and flows out of the oil outlet.

The gas is filtered by arranging a primary filter element between the inlet 101 and the outlet 102; furthermore, a secondary filter element is arranged on the basis of the primary filter element, so that part of gas can be subjected to secondary filtration, and the gas is subjected to secondary filtration while being subjected to primary filtration, so that the filtration efficiency of the rotary oil-gas separator is improved, particulate matters in the gas are filtered as far as possible, and the cleanliness of the filtered gas is improved to meet the emission standard.

Specifically, the filter core assembly still includes pivot 1, and the one end of pivot 1 is passed through bearing 11 and is rotated and connect in the oil-out, and first filter core and secondary filter core wear to locate in proper order on pivot 1, and pivot 1 can drive first filter core and secondary filter core and rotate to filter gas, and make the machine oil of filtering off pass through bearing 11 and flow out the oil-out. Illustratively, the rotating shaft 1 can be driven by liquid, and the liquid for driving the rotating shaft 1 can be engine oil or engine cooling liquid, so that resources are reasonably utilized.

Further, as shown in fig. 1 and 2, the filter element assembly further includes a filter element base 5, the rotating shaft 1 penetrates through the filter element base 5, an oil outlet 51 communicating the gap 103 with the oil outlet is formed in the filter element base 5, engine oil particles in the mixed gas from the crankcase can collide with the primary filter element, oil drops in the oil drops can be gathered on the surface of the primary filter element and fall to the bottom of the primary filter element under the action of gravity, the oil drops can be thrown to the inner wall of the shell 100 under the action of centrifugal force generated by the filter element assembly driven by high-speed rotation of the rotating shaft 1, then the oil drops flow down along the inner wall of the shell 100, and finally filtered engine oil flows to the bearing 11 through the oil outlet 51 and flows out of the oil outlet from a gap between the inner ring and the outer ring of the bearing.

In addition, the filter element base 5 is provided with an air outlet 52 communicated with the outlet 102 and an air inlet window 53 communicated with the gap 103 and the air outlet 52, air filtered by the primary filter element flows into the gap 103, air in the gap 103 enters the filter element base 5 through the air inlet window 53, and air in the filter element base 5 enters the outlet 102 through the air outlet 52 and is discharged out of the rotary oil-gas separator.

It is worth to be noted that the secondary filter element is communicated with the oil outlet hole 51, when part of the gas which is not completely filtered flows into the oil outlet hole 51 randomly, the part of the gas enters the secondary filter element for secondary filtration, the gas after the secondary filtration enters the gap 103 again, and then flows out from the outlet 102 through the gas inlet window 53 and the gas outlet hole 52 in sequence, and the gas after the secondary filtration has a better filtering effect. The rotary oil-gas separator is analyzed through a fluid simulation technology, and the secondary filter element filters part of gas which is not completely filtered, so that the filtering efficiency of the rotary oil-gas separator is effectively improved. The fluid simulation technology is the prior art, and the detailed analysis process is not described herein.

Specifically, as shown in fig. 1 to 9, the primary filter element includes a top sheet 21 and at least two intermediate sheets 22 stacked in this order from an inlet 101 to the secondary filter element, and the secondary filter element includes a secondary bottom sheet 31 and a bottom sheet 32 stacked in this order from the primary filter element to an outlet 102; the air can pass through the top sheet 21 and the middle sheet 22, the two adjacent middle sheets 22, the middle sheet 22 and the secondary bottom sheet 31, and part of the air can pass through the secondary bottom sheet 31 and the bottom sheet 32.

It should be noted that the number of the intermediate plates 22 can be determined by those skilled in the art according to the amount of blow-by gas in the crankcase of the engine and the resistance of the rotary oil-gas separator, and the number of the intermediate plates 22 is generally between 2 and 50, and is not limited in any way.

In this embodiment, in order to connect the primary filter element and the secondary filter element with the rotating shaft 1, the top plate 21, the middle plate 22, the secondary bottom plate 31 and the bottom plate 32 are all provided with through holes 41, and the rotating shaft 1 is arranged in the through holes 41 in a penetrating manner. In order to enable the filter element assembly to rotate together with the rotating shaft 1, the through hole 41 is further provided with a limiting groove 411 so as to realize circumferential limiting between the top sheet 21, the middle sheet 22, the secondary bottom sheet 31, the bottom sheet 32 and the rotating shaft 1.

Optionally, spokes 42 are arranged on the top sheet 21 and the middle sheet 22, and air can enter the top sheet 21 and the middle sheet 22 and be filtered between the adjacent middle sheets 22 through the spokes 42, which is beneficial to improving the filtering efficiency of the primary filter element.

In order to realize the installation of the primary filter element and the secondary filter element and the filtration of gas, the middle sheet 22, the secondary bottom sheet 31 and the bottom sheet 32 are provided with first ribs at one ends close to the inlet 101; the intermediate sheet 22 and one end of the secondary bottom sheet 31 close to the outlet 102 are provided with second ribs; a filter passage 45 is provided between the adjacent first ribs and second ribs, and gas can pass through the filter passage 45.

It should be noted that, since the top sheet 21 has the function of pressing the intermediate sheet 22, the secondary bottom sheet 31 and the bottom sheet 32, and the air passes through less, the second ribs are not provided on the side of the top sheet 21 adjacent to the outlet 102 for the sake of simplicity. The surface of the bottom plate 32 close to the outlet 102 abuts against the filter element base 5 and is not used for secondary filtration of gas, so that the second rib is not provided.

Further, the first rib includes a first annular rib 431 provided along the circumferential direction of the through hole 41 and a radial rib 432 provided along the radial direction of the through hole 41; the second rib includes a second annular rib 441 circumferentially disposed along the through hole 41 and a radial groove 442 radially disposed along the through hole 41 and engaged with the radial rib 432.

The filtering channel 45 is formed between the adjacent first annular rib 431 and the second annular rib 441, the radial rib 432 and the radial groove 442 between the top sheet 21, the middle sheet 22, the secondary bottom sheet 31 and the bottom sheet 32 which are buckled with each other, and the formed filtering channel 45 is bent more, so that the length of the filtering channel 45 is favorably prolonged, gas is filtered in the filtering channel 45 for a longer time, and the filtering efficiency can be effectively improved.

It should be noted that, in this embodiment, the surface of the secondary bottom plate 31 close to the outlet 102 is further provided with a second radial rib 443 in addition to the second annular rib 441, and is not provided with the radial groove 442, when the secondary bottom plate 31 is installed, the second radial rib 443 of the secondary bottom plate 31 abuts against the radial rib 432 of the bottom plate 32 along the circumferential direction, so as to be used for secondary filtration of gas on one hand, and on the other hand, assist the power transmission of the rotating shaft 1.

The embodiment also provides a rotary oil-gas separator, which comprises the filter element assembly in any scheme.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a filter core assembly, sets up in casing (100) of rotatory oil and gas separator, be provided with import (101), export (102) and oil-out on casing (100), filter core assembly with be provided with clearance (103) between casing (100), its characterized in that includes:

a primary filter element arranged between the inlet (101) and the outlet (102), gas entering from the inlet (101) being able to enter the gap (103) and exit the outlet (102) via the primary filter element;

and the secondary filter element is arranged between the inlet (101) and the outlet (102), part of gas in the gap (103) can flow out of the outlet (102) after passing through the secondary filter element, and engine oil in the gas flows down along the inner wall of the shell (100) and flows out of the oil outlet.

2. The filter element assembly of claim 1, further comprising a rotating shaft (1), wherein the rotating shaft (1) is arranged in the oil outlet through a bearing (11) in a transmission manner, the primary filter element and the secondary filter element are sequentially arranged on the rotating shaft (1) in a penetrating manner, and the filtered engine oil flows out of the oil outlet through the bearing (11).

3. The filter cartridge assembly of claim 2, wherein the primary filter cartridge comprises a top sheet (21) and at least two intermediate sheets (22) stacked in sequence from the inlet (101) to the secondary filter cartridge, and the secondary filter cartridge comprises a secondary bottom sheet (31) and a bottom sheet (32) stacked in sequence from the primary filter cartridge to the outlet (102);

the gas can pass through the top sheet (21) and the middle sheet (22), the adjacent middle sheets (22), the middle sheet (22) and the upper part of the secondary bottom sheet (31), and part of the gas can pass through the lower part of the secondary bottom sheet (31) and the bottom sheet (32).

4. The filter element assembly of claim 3, wherein the top plate (21), the middle plate (22), the secondary bottom plate (31) and the bottom plate (32) are provided with through holes (41), the rotating shaft (1) penetrates through the through holes (41), and the through holes (41) are further provided with limiting grooves (411).

5. The cartridge assembly of claim 3, wherein spokes (42) are provided on the top sheet (21) and the middle sheet (22).

6. The cartridge assembly of claim 4, wherein the intermediate sheet (22), the secondary bottom sheet (31) and the end of the bottom sheet (32) near the inlet (101) are each provided with a first rib;

one ends of the middle sheet (22) and the secondary bottom sheet (31) close to the outlet (102) are provided with second ribs;

a filter channel (45) is arranged between the adjacent first ribs and the adjacent second ribs, and gas can pass through the filter channel (45).

7. The cartridge assembly of claim 6, wherein the first rib includes a first annular rib (431) circumferentially disposed along the through hole (41) and a radial rib (432) radially disposed along the through hole (41);

the second rib comprises a second annular rib (441) arranged along the circumferential direction of the through hole (41) and a radial groove (442) arranged along the radial direction of the through hole (41) and matched with the radial rib (432).

8. The cartridge assembly of claim 7, wherein the end of the secondary bottom sheet (31) adjacent the outlet (102) is provided with a second radial rib (443).

9. The filter element assembly according to any one of claims 2 to 8, further comprising a filter element base (5), wherein the rotating shaft (1) penetrates through the filter element base (5), and the filter element base (5) is provided with an oil outlet hole (51) communicating the gap (103) with the oil outlet, an air outlet hole (52) communicating with the outlet (102), and an air inlet window (53) communicating the gap (103) with the air outlet hole (52).

10. A rotary oil and gas separator comprising a cartridge assembly as claimed in any one of claims 1 to 9.