CN212642927U

CN212642927U - Upper end cover of filter element assembly

Info

Publication number: CN212642927U
Application number: CN202021341157.8U
Authority: CN
Inventors: 张文明; 简鹏真; 侯庆贤; 窦武
Original assignee: Linhai Jiangnan Filter Co ltd
Current assignee: Taizhou Jiangnan Filter Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-03-02
Anticipated expiration: 2030-07-09

Abstract

The utility model provides an upper end cover of filter core assembly belongs to automobile engine prefilter technical field. It has solved the problem that the pressure balance hole on the current upper end cover structure is blockked up easily. The upper end cover of the filter element assembly comprises a body with an upper end face and a lower end face, wherein a raised boss is arranged in the middle of the upper end face, a pressure balance hole is formed in the boss, and the pressure balance hole penetrates through and conducts the upper end face and the lower end face. The upper end cover of the filter element assembly has the advantage that the pressure balance hole is not easy to be blocked.

Description

Upper end cover of filter element assembly

Technical Field

The utility model belongs to the technical field of the automobile engine prefilter, a fuel filter core assembly, especially an upper end cover of filter core assembly is related to.

Background

At present, vehicle engines are basically internal combustion engines, and mainly use two fuels, namely gasoline and diesel oil. As a fuel, there is a certain requirement for the quality and cleanliness of the oil. For refining processing reasons, the finished fuel oil must contain a certain amount of impurities, moisture and gums. The fuel filter is used for filtering out impurities and moisture in the fuel and providing clean fuel for the engine. Because there are three precision matching parts in the diesel engine supply system, the requirement for the cleanness degree of diesel oil is high, and the colloid content in the diesel oil is high, if these colloid and impurity are not filtered and enter the fuel injection pump, it is easy to accelerate the abrasion of the precision matching parts, and is easy to block, and reduce the service life of the engine, and at the same time, if the moisture and colloid in the fuel oil enter the cylinder, the combustion of the combustible gas mixture is poor, and the power of the engine is reduced. And a key part of the fuel filter for filtering colloid, impurities and the like is a fuel filter element assembly.

The fuel filter element assembly comprises an upper end cover, a lower end cover, and filter paper, a center net and a hydrophobic net which are arranged between the upper end cover and the lower end cover. The filter paper cover is established on central net periphery wall and central net plays the supporting role to filter paper, and in use, need maintain the atmospheric pressure balance of filter paper both sides, thereby the great atmospheric pressure difference can make filter paper take place to warp easily and make filter paper lose the function of filtering impurity otherwise. The prior art adopts a mode of forming a pressure balance hole on an upper end cover to solve the technical problems, and although the technical problems are well solved, the prior art still has some problems: the filter element assembly is characterized in that the filter element assembly is arranged on the upper end cover, the fuel filter is arranged on the lower end cover, and the fuel filter is arranged on the upper end cover.

Disclosure of Invention

The utility model aims at solving the technical problem, an upper end cover of filter core assembly is provided.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an upper end cover of filter core assembly, includes the body that has up end and terminal surface down, its characterized in that: the middle part of the upper end face is provided with a raised boss, the boss is provided with a pressure balance hole, and the pressure balance hole penetrates through the upper end face and the lower end face to be communicated.

In the upper end cover of the filter element assembly, the middle of the upper end of the boss is a circular plane, the lower end part of the boss is in a circular truncated cone shape, the peripheral edge of the circular plane and the peripheral surface of the lower end part of the boss are in smooth transition through an arc-shaped curved surface, and the pressure balance hole is formed in the middle of the circular plane.

In the above upper end cover of the filter element assembly, the boss is of a circular truncated cone structure.

In the upper end cover of the filter element assembly, one side of the lug boss extends outwards to form a strip-shaped lug, and the upper end face of the strip-shaped lug is a smooth-transition curved surface.

In the upper end cover of the filter element assembly, the bosses are multiple, and each boss is provided with a pressure balance hole.

In the upper end cover of the filter element assembly, the body is circular, the number of the bosses is two, and the two bosses are symmetrically arranged on two sides of the circle center of the body.

In the upper end cover of the filter element assembly, the lower end face is provided with a first reinforcing rib and a second reinforcing rib which are annular, the first reinforcing rib and the second reinforcing rib are perpendicular to the lower end face, and the first reinforcing rib is located at the periphery of the lower end face.

In the upper end cover of the filter element assembly, the lower end face is provided with a plurality of counter bores which are distributed in a radial manner by taking the circle center on the body as the center.

In the upper end cover of the filter element assembly, the height of the lug boss relative to the upper end surface is 0.25 cm-1 cm.

Compared with the prior art, the upper end cover of the filter element assembly has the following advantages:

1. because the unfiltered fuel oil contains impurities such as scrap iron and the like, but the weight of the impurities such as the scrap iron is heavier, when the fuel oil level of the dirty oil cavity is continuously raised and covers the upper end cover, the impurities such as the scrap iron and the like are heavier and can be settled on the upper end surface of the upper end cover, the boss has a certain height, and the pressure balance hole is formed in the boss, so that the impurities such as the scrap iron and the like are prevented from running onto the boss to block the pressure balance hole;

2. the two bosses and the two pressure balance holes are arranged to prevent one pressure balance hole from playing a role after the other pressure balance hole is blocked, so that the possibility of unbalanced pressure on two sides of the filter paper caused by blocking is reduced.

Drawings

Fig. 1 is a structural schematic diagram of the upper end cap.

Fig. 2 is another structural schematic diagram of the upper end cap.

Fig. 3 is a schematic view of the assembly of the upper cap end to the cartridge assembly.

Fig. 4 is another schematic view of the assembly of the upper cap end to the cartridge assembly.

Fig. 5 is a cross-sectional view at a-a in fig. 4.

Fig. 6 is a structural schematic diagram of a boss.

In the figure, 1, a body; 2. an upper end surface; 3. a lower end face; 4. a boss; 41. a circular plane; 42. an arc-shaped curved surface; 5. a pressure balance hole; 6. a bar-shaped projection; 7. a first reinforcing rib; 8. a second reinforcing rib; 9. a counter bore; 10. filtering paper; 11. a central network; 12. a hydrophobic net.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 3 and 4, the upper end cap of the filter cartridge assembly is assembled to the upper end of the filter cartridge assembly, which includes a filter paper 10, a center screen 11 and a hydrophobic screen 12. The upper end cap comprises a body 1 with an upper end face 2 and a lower end face 3, and the body 1 is circular. As shown in fig. 2, the lower end surface 3 is provided with a first circular reinforcing rib 7 and a second circular reinforcing rib 8, the first circular reinforcing rib 7 and the second circular reinforcing rib 8 are both perpendicular to the lower end surface 3, and the first circular reinforcing rib 7 is located at the peripheral edge of the lower end surface 3; a plurality of counter bores 9 are formed in the lower end face 3, and the counter bores 9 are located between the first reinforcing ribs 7 and the second reinforcing ribs 8 and distributed in a radial mode by taking the circle center on the body 1 as the center.

As shown in fig. 1, 5 and 6, the middle part of the upper end surface 2 is provided with two raised bosses 4 with the same structure, the two bosses 4 are symmetrically arranged at two sides of the center of a circle on the body 1, and the height of the boss 4 relative to the upper end surface 2 is 0.25 cm-1 cm. The middle of the upper end of the boss 4 is a circular plane 41, the lower end of the boss 4 is in the shape of a circular truncated cone, the peripheral edge of the circular plane 41 and the peripheral face of the lower end of the boss 4 are in smooth transition through an arc-shaped curved surface 42, a pressure balance hole 5 is formed in the middle of the circular plane 41, the pressure balance hole 5 penetrates through the upper end face 2 and the lower end face 3 and is communicated with a gap between a drainage net 12 and a central net 11 in the filter element assembly, and the caliber of the pressure balance hole 5 is small at the top and large at the bottom. Of course, the bosses 4 in this embodiment may also be in a direct circular truncated cone structure, and the number of the bosses 4 may also be 3 or more. The two bosses 4 and the two pressure balance holes 5 are arranged to prevent one pressure balance hole 5 from playing a role after the other pressure balance hole 5 is blocked, so that the possibility of pressure unbalance on two sides of the filter paper 10 caused by blocking is reduced; of course, the greater the number of bosses 4, the less likely it is to become completely plugged.

Further, as shown in fig. 6, one side of the boss 4 extends outward to form a bar-shaped protrusion 6, and the upper end surface 2 of the bar-shaped protrusion 6 is a smoothly-transiting curved surface. The strip-shaped projections 6 on the two bosses 4 are arranged in the relatively distant direction.

In actual work, because impurity such as iron fillings contains in the unfiltered fuel, but impurity weight such as iron fillings is heavier, so when the fuel liquid level of dirty oil pocket constantly risees and covers the upper end cover, because impurity weight such as iron fillings is heavier, impurity such as iron fillings can subside on the up end 2 of upper end cover, and boss 4 has a take the altitude, impurity such as iron fillings can not run on boss 4, consequently set up pressure balance hole 5 on boss 4, thereby avoid impurity such as iron fillings to run and block up pressure balance hole 5 on boss 4.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An upper end cap for a filter cartridge assembly, comprising a body (1) having an upper end face (2) and a lower end face (3), characterized in that: the middle part of the upper end face (2) is provided with a raised boss (4), the boss (4) is provided with a pressure balance hole (5), and the pressure balance hole (5) penetrates through the upper end face (2) and the lower end face (3).

2. The upper end cap of a filter element assembly according to claim 1, wherein the middle of the upper end of the boss (4) is a circular plane (41), the lower end of the boss (4) is in the shape of a circular truncated cone, the peripheral edge of the circular plane (41) and the outer peripheral surface of the lower end of the boss (4) are smoothly transited through an arc-shaped curved surface (42), and the pressure balance hole (5) is formed in the middle of the circular plane (41).

3. The upper end cap of a filter cartridge assembly as recited in claim 1, wherein the boss (4) is a circular truncated cone structure.

4. The upper end cap of a filter cartridge assembly as recited in claim 2, wherein one side of the boss (4) is extended outward to form a bar-shaped projection (6), and the upper end surface (2) of the bar-shaped projection (6) is a smoothly transitional curved surface.

5. The upper end cover of the filter element assembly as recited in claim 2 or 4, wherein the number of the bosses (4) is plural, and each boss (4) is provided with a pressure balance hole (5).

6. The upper end cover of the filter element assembly as recited in claim 5, wherein the body (1) is circular, the number of the bosses (4) is two, and the two bosses (4) are symmetrically arranged on the two sides of the center of a circle on the body (1).

7. The upper end cover of the filter element assembly according to claim 6, wherein the lower end surface (3) is provided with a first reinforcing rib (7) and a second reinforcing rib (8) which are circular, the first reinforcing rib (7) and the second reinforcing rib (8) are perpendicular to the lower end surface (3), and the first reinforcing rib (7) is positioned at the peripheral edge of the lower end surface (3).

8. The upper end cap of a filter element assembly according to claim 6, wherein the lower end face (3) is provided with a plurality of counter bores (9), and the counter bores (9) are radially distributed by taking the center of a circle on the body (1) as the center.

9. A filter cartridge assembly upper end cap according to claim 6, wherein the height of the boss (4) relative to the upper end face (2) is 0.25cm to 1 cm.