CN212296540U

CN212296540U - Filter with improved end cover structure

Info

Publication number: CN212296540U
Application number: CN202020817848.4U
Authority: CN
Inventors: 许洋
Original assignee: Bengbu Jiahe Longxin Filter Co ltd
Current assignee: Bengbu Jiahe Longxin Filter Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2021-01-05
Anticipated expiration: 2030-05-18

Abstract

The utility model relates to an oil cleaner field especially relates to a filter of end cover institutional advancement. The filter with the improved end cover structure comprises a sealing ring, a gland, a check valve, an upper end cover, an inner net, filter paper, a bypass valve, a lower end cover, a supporting spring, a magnet and a shell; the structure of the sealing ring is an O-shaped sealing ring with a rectangular cross section, and the upper end surface of the sealing ring is contacted with a connecting piece outside the device; adopt the utility model discloses can reach that the leakproofness is good, make intranet and lower end cover atress even, reduce large granule impurity to the wearing and tearing of engine, avoided needing to use ultrasonic machine with gland and end cover welding together to reduce cost has avoided appearing the seam simultaneously obviously, produces phenomenons such as burr, welding slag easily in seam crossing, the product is pleasing to the eye.

Description

Filter with improved end cover structure

Technical Field

The utility model relates to an oil cleaner field especially relates to a filter of end cover institutional advancement.

Background

At present, in the existing oil filter, a bypass valve is arranged at the bottom of a paper filter element, which is a direct oil flow channel designed for ensuring that engine oil can smoothly circulate back to an engine when the viscosity of the engine oil is high in cold start or the paper filter element is partially or completely blocked. When the bypass valve is opened under the pressure of the oil pump, the engine oil which circulates back to the engine through the bypass valve can not be filtered by the paper filter element, and large granular impurities which are filtered out by the paper filter element can be flushed back to the engine through the bypass valve again, so that uninterrupted secondary abrasion is brought to the engine, and therefore the engine oil filter used in the market can not play a role in filtering under special conditions;

most of filter products in the market at present, in which a sealing ring is placed in a filter element end cover, generally comprise a filter element cover, a sealing ring, a pressing cover and a filtering piece, wherein the pressing cover and the filtering piece are respectively arranged at two sides of the end cover;

at present, in a traditional oil filter, a supporting spring is directly contacted with the bottom of a shell, and a compression spring of a bypass valve is fixed on the inner wall of an inner net, so that the supporting spring is easy to deviate in the installation process, and after the installation is finished, a lower end cover and the bypass valve are more easy to cause the matching deviation under the action of the supporting spring, and further an overflow valve is leaked;

accordingly, there is a need for a filter having an improved end cap construction to overcome the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

A filter with an improved end cap construction, comprising: the sealing device comprises a sealing ring, a gland, a check valve, an upper end cover, an inner net, filter paper, a bypass valve, a lower end cover, a supporting spring, a magnet and a shell;

the upper end surface of the sealing ring is contacted with a connecting piece outside the device; the inner net is fixedly connected with the gland; the inner surface of the filter paper is fixedly connected with the outer surface of the inner net; the check valve is positioned below the main surface of the gland;

the gland includes: the main surface of the gland, the groove of the sealing ring, the oil outlet and the clamping block; a sealing ring groove is formed in the main surface of the gland; the sealing ring groove is arranged below the sealing ring; the oil outlet is arranged on the main surface of the gland; the clamping block is fixedly connected to the lower part of the oil outlet;

the upper end cap includes: a fixture block opening and an upper end cover main surface; the main surface of the upper end cover is positioned below the check valve; the fixture block port is arranged on the main surface of the upper end cover;

the lower end cap includes: an oil through hole II, a coarse filter screen, coarse filter paper and a groove; the coarse strainer is clamped in the groove, the outer circle of the coarse filter paper is fixedly connected with the inner circle of the coarse strainer, and the second inlet of the oil through hole is formed in the end face of the coarse strainer;

the bypass valve is established in the inside of intranet, and it includes: the sealing device comprises a shell, a compression spring, a first oil through hole and a sealing body; the shell is fixedly connected above the coarse filter screen; the compression spring is arranged in the shell, and the upper end of the compression spring is fixedly connected with the top of the shell; the first oil through hole is formed in the lower end of the shell; the sealing body is fixedly connected with the lower end of the compression spring;

the upper end of the supporting spring is fixedly connected with the groove;

the housing includes: a positioning component and a fixing component; the positioning assembly is connected to the lower end of the supporting spring in a pressing fit manner; the fixing component is eccentrically designed in the positioning component;

the magnet is arranged in the positioning assembly and is positioned below the fixing assembly.

The utility model has the advantages as follows:

the utility model positions the supporting spring through the matching of the supporting spring and the shell, so that the lower end cover is well matched with the inner net, and the problem of uneven stress of the inner net and the lower end cover is solved;

the utility model keeps the matching plane of the bypass valve and the lower end cover consistent when not opened by matching the bypass valve and the lower end cover, so as to ensure good sealing performance and avoid the deviation of the matching of the lower end cover and the bypass valve;

the utility model has the advantages that the matching of the coarse filter paper, the bypass valve and the lower end cover ensures that the bypass valve has the secondary opening capability so as to reduce the abrasion of large granular impurities to the engine, avoid the continuous secondary abrasion of the large granular impurities to the engine, and solve the problem that the traditional oil filter cannot filter under special conditions to a certain extent;

the utility model discloses a cooperation of gland, fixture block, check valve and upper end cover makes gland and upper end cover only need can seal through the cooperation relation, has avoided needing to use ultrasonic machine with gland and end cover welding together to reduce cost has avoided appearing the seam simultaneously obviously, produces phenomenons such as burr, welding slag easily in seam crossing.

Drawings

FIG. 1 is a general schematic view of a filter according to the present invention;

FIG. 2 is a schematic view of a filter cover according to the present invention;

FIG. 3 is a schematic view of the upper end cap of the filter of the present invention;

FIG. 4 is a schematic view of a by-pass valve of the filter of the present invention;

FIG. 5 is a schematic view of a lower end cap of a filter with an improved end cap structure according to the present invention;

FIG. 6 is a front half-sectional view of the lower end cap of the present invention;

fig. 7 is a schematic view of a filter housing according to the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are easily implemented by those having ordinary skill in the art to which the present invention pertains. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In addition, for the purpose of more clearly describing the present invention, parts not connected with the present invention will be omitted from the drawings.

As shown in figure 1, the filter with the improved end cover structure comprises a sealing ring 1, a gland 2, a check valve 3, an upper end cover 4, an inner net 5, filter paper 6, a bypass valve 7, a lower end cover 8, a supporting spring 9, a magnet 10 and a shell 11;

the gland 2 includes: the gland main surface 201, the sealing ring groove 202, the oil outlet 203 and the fixture block 204;

the upper end cap 4 includes: a cartridge pocket 401 and an upper end cap main surface 402;

the bypass valve 7 includes: the sealing device comprises a shell 701, a compression spring 702, a first oil through hole 703 and a sealing body 704;

the lower end cap 8 includes: a second oil through hole 801, a coarse filter screen 802, coarse filter paper 803 and a groove 804;

the housing 11 includes: positioning assembly 1101, fixing assembly 1102;

the structure of the sealing ring 1 is an O-shaped sealing ring with a rectangular cross section, and the upper end surface of the sealing ring is contacted with a connecting piece outside the device;

a sealing ring groove 202 is arranged on the main surface 201 of the gland;

the sealing ring groove 202 is arranged below the sealing ring 1, and the sealing ring groove 202 is fixedly connected with the lower end surface of the sealing ring 1;

the oil outlet 203 is in a circular cylindrical structure, and the oil outlet 203 and the gland main face 201 are coaxially arranged on the gland main face 201;

the fixture block 204 is fixedly connected to the lower part of the oil outlet 203, and the fixture block surrounds the oil outlet 203 to form a cross shape;

the check valve 3 is positioned below the gland main surface 201, and the upper end surface of the check valve 3 is connected with the lower end surface of the gland main surface 201 in a pressing fit manner;

the upper end cover main surface 402 is positioned below the check valve 3, and the upper end surface of the upper end cover main surface 402 is connected with the lower end surface of the check valve 3 in a press fit manner; the main surface 402 of the upper end cover is positioned above the fixture block 204, and the main surface 402 of the upper end cover is in press fit connection with the fixture block 204;

the fixture block opening 401 is formed in the main surface 402 of the upper end cover, and the fixture block opening 401 is similar to the fixture block 204 in structure, so that the fixture block 204 can be perfectly clamped with the fixture block opening 401;

the inner net 5 is in a circular cylindrical structure, and the upper end of the inner net 5 is fixedly connected with the gland 2;

the structure of the filter paper 6 is in a circular cylindrical shape, and the inner surface of the filter paper 6 is fixedly connected with the outer surface of the inner net 5;

the section of the groove 804 is U-shaped, and the outer circle of the groove 804 is fixedly connected with the inner circle of the inner net 5;

the structure of the coarse filter screen 802 is a barrel shape with an opening at the bottom, and the outer circle of the coarse filter screen 802 is fixedly connected with the inner circle of the groove 804;

the structure of the coarse filter paper 803 is a circular cylindrical structure, and the outer circle of the coarse filter paper 803 is fixedly connected with the inner circle of the coarse filter screen 802;

the section of the second oil through hole 801 is in an inverted convex shape, and the end with the larger diameter in the convex shape is an opening at the bottom of the coarse filter screen 802;

the bypass valve 7 is arranged inside the inner net 5;

the shell 701 is arranged above the coarse strainer 802, and the lower end of the shell 701 is fixedly connected with the coarse strainer 802;

the compression spring 702 is arranged inside the shell 701, and the upper end of the compression spring 702 is fixedly connected with the top of the shell 701;

the first oil through hole 703 is formed in the lower end of the shell 701;

the sealing body 704 is a cylinder with the diameter the same as that of the end with the larger diameter of the second oil through hole 801 in the shape of a Chinese character 'tu', the sealing body 704 is arranged below the compression spring 702, and the upper end face of the sealing body 704 is fixedly connected with the lower end of the compression spring 702;

the upper end of the supporting spring 9 is fixedly connected with the groove 804;

the positioning assembly 1101 is connected to the lower end of the supporting spring 9 in a pressing fit manner;

the fixed component 1102 is eccentrically designed inside the positioning component 1101;

the magnet 10 is arranged inside the positioning assembly 1101, and the magnet 10 is positioned below the fixing assembly 1102;

by adopting the embodiment, the working principle is as follows:

after the fixture block 204 passes through the fixture block opening 401 under the action of external force, the gland 2 or the upper end cover 4 is rotated, and under the action of the pretightening force of the check valve 3, the gland 2, the check valve 3 and the upper end cover 4 play a role in sealing;

when the paper filter element is not blocked, the oil pressure is not enough to push the sealing body 704 of the bypass valve 7, the sealing body seals the second oil through hole 801, and the oil normally flows back to the engine after being filtered by the filter paper 6; when the viscosity of cold start engine oil is high or a paper filter element is partially or completely blocked, the bypass valve 7 is opened under the action of pressure, if the pressure is not enough to push the sealing body 704 to be completely away from the widest side of the inverted convex shape of the oil through hole II 801, the oil still needs to be filtered through the coarse filter screen 802 and the coarse filter paper 803, if the pressure is enough to push the sealing body 704 to be completely away from the widest side of the inverted convex shape, the oil directly flows back to the engine from the oil through hole I703 of the bypass valve 7, but because the oil through hole I703 is horizontally designed, the area of the oil through hole I703 is smaller than that of the oil through hole II 801, the flow rate of the oil is reduced, so that the larger impurities are likely to be precipitated and adsorbed to the magnet 10;

the eccentric design of the fixing assembly 1102 is to place the magnet 10 in, the positioning assembly 1101 prevents the supporting spring 9 from moving randomly, and the supporting spring 9 and the fixing assembly 1102 are matched to fix the magnet 10 in a three-dimensional direction.

Claims

1. A filter with an improved end cap construction, comprising: the device comprises a sealing ring (1), a gland (2), a check valve (3), an upper end cover (4), an inner net (5), filter paper (6), a bypass valve (7), a lower end cover (8), a supporting spring (9), a magnet (10) and a shell (11);

the upper end surface of the sealing ring (1) is contacted with a connecting piece outside the device; the inner net (5) is fixedly connected with the gland (2); the inner surface of the filter paper (6) is fixedly connected with the outer surface of the inner net (5); the check valve (3) is located below the gland main surface (201);

the method is characterized in that: the gland (2) comprises: the oil pump comprises a gland main surface (201), a sealing ring groove (202), an oil outlet (203) and a fixture block (204); a sealing ring groove (202) is formed in the main surface (201) of the gland; the sealing ring groove (202) is arranged below the sealing ring (1); the oil outlet (203) is arranged on the gland main surface (201); the fixture block (204) is fixedly connected to the lower part of the oil outlet (203);

the upper end cap (4) comprises: a cartridge opening (401) and an upper end cover main surface (402); the upper end cover main surface (402) is positioned below the check valve (3); the fixture block port (401) is arranged on the main surface (402) of the upper end cover;

the lower end cap (8) comprises: an oil through hole II (801), a coarse filter screen (802), coarse filter paper (803) and a groove (804); the coarse strainer is clamped in the groove (804), the outer circle of the coarse filter paper (803) is fixedly connected with the inner circle of the coarse strainer (802), and the inlet of the oil through hole II (801) is arranged on the end face of the coarse strainer;

the bypass valve (7) is arranged inside the inner net (5) and comprises: the sealing device comprises a shell (701), a compression spring (702), a first oil through hole (703) and a sealing body (704); the shell (701) is fixedly connected above the coarse filter screen (802); the compression spring (702) is arranged in the shell (701), and the upper end of the compression spring is fixedly connected with the top of the shell; the first oil through hole (703) is formed in the lower end of the shell (701); the sealing body (704) is fixedly connected with the lower end of the pressing spring (702);

the upper end of the supporting spring (9) is fixedly connected with the groove (804);

the housing (11) comprises: a positioning assembly (1101), a fixing assembly (1102); the positioning assembly (1101) is connected to the lower end of the supporting spring (9) in a pressing fit mode; the fixed assembly (1102) is eccentrically designed inside the positioning assembly (1101);

the magnet (10) is arranged inside the positioning assembly (1101), and the magnet (10) is positioned below the fixing assembly (1102).

2. A filter with improved end cap construction according to claim 1, wherein: the fixture block surrounds the oil outlet (203) to form a cross-like shape.

3. A filter with improved end cap construction according to claim 2 wherein: the fixture block opening (401) is similar to the fixture block (204) in structure, and the fixture block (204) can be clamped with the fixture block opening (401).

4. A filter with improved end cap construction according to claim 1, wherein: the sealing body (704) is a cylinder with the diameter the same as that of the end with the larger diameter of the convex shape of the oil through hole II (801).

5. A filter with improved end cap construction according to claim 1, wherein: the structure of the coarse filter screen (802) is a barrel-shaped structure with an opening at the bottom.

6. A filter with improved end cap construction according to claim 1, wherein: the section of the second oil through hole (801) is inverted in a convex shape, and the end with the larger diameter in the convex shape is an opening at the bottom of the coarse filter screen (802).