Return oil filter

Abstract

The utility model provides an oil return filter. An oil inlet is formed in the bottom side of the shell, and an oil outlet is formed in the top side of the shell; the magnetic metal filtering component is mounted on the bottom side of the shell and comprises an upper mounting disc, a plurality of magnet rings and a lower mounting disc which are sequentially arranged in parallel from top to bottom, the upper mounting disc, the magnet rings and the lower mounting disc are fixedly connected through connecting columns, a through hole is formed in the lower mounting disc, and the through hole is matched with the oil inlet. According to the oil return filter, oil enters the inner side of the shell through the oil inlet, then enters the magnetic metal filtering component through the through hole, enters the filter element through the peripheral side of the shell after being filtered for the first time through the magnetic metal filtering component, flows out of the top side of the filter element, is filtered for the second time and finally is discharged through the oil outlet. In the whole process, impurities in the oil liquid can be fully filtered, and the impurity filtering efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to an oil return filter. Background Art

[0002] The oil circuit system in a ship needs to be refueled many times. During the refueling process, a large amount of impurities will be introduced. At the same time, due to the long-term operation of the equipment, excess impurities will be generated. The oil circuit in the ship is a circulation system. The impurities in the oil circuit will enter the main engine, causing serious damage to the main engine, and the subsequent maintenance cost of the main engine is expensive. At present, it is commonly used to install multiple layers of filter paper in the oil circuit to filter impurities. The filter paper has low filtering efficiency for impurities, which affects the flow of liquid in the oil circuit and is easy to block the oil circuit.

[0003] In the prior art, Patent No. 201810279804.8 discloses a ship main engine return oil filter. The ship main engine return oil filter includes a shell, a shell cover that is buckled with the shell, an oil filter element and a magnetic metal filter component; the shell is provided with an oil inlet and an oil outlet; the oil filter element and the magnetic metal filter component are both installed inside the shell; the magnetic metal filter component includes a chassis and a plurality of magnets, wherein the surface of the chassis is provided with grooves corresponding to the number of magnets, and each magnet is installed inside the corresponding groove. By installing the oil filter element and the magnetic metal filter component in the ship main engine return oil filter, the impurities in the circuit oil are filtered to a great extent, the cleanliness of the ship oil is maintained, the ship main engine is protected, and the service life of the ship main engine is extended.

[0004] In the above technology, the magnetic metal filter component is arranged on the bottom side of the shell, and the oil inlet and outlet are arranged on the top side of the shell, which cannot completely filter out the metal impurities in the oil circuit; and the magnetic metal filter component only has a surface portion in contact with the oil, and the surface area in contact with the overall flowing oil is small, and the filtering efficiency of the metal impurities in the oil is low. Utility Model Content

[0005] In view of the above problems, the utility model provides an oil return filter. The oil enters the inner side of the housing through the oil inlet, then enters the magnetic metal filter component through the through hole, and after being filtered once by the magnetic metal filter component, enters the filter element through the peripheral side of the housing, flows out from the top side of the filter element, undergoes secondary filtration, and is finally discharged through the oil outlet. During the whole process, impurities in the oil can be fully filtered, and the impurity filtration efficiency is high.

[0006] A return oil filter comprises: a shell, with an oil inlet opened on the bottom side and an oil outlet opened on the top side; a magnetic metal filter component, which is installed on the bottom side of the shell and comprises an upper mounting plate, a plurality of magnet rings, and a lower mounting plate which are arranged in parallel from top to bottom, the upper mounting plate, the plurality of magnet rings, and the lower mounting plate are fixedly connected by a connecting column, and a through hole is opened on the lower mounting plate, and the through hole is matched with the oil inlet.

[0007] In a preferred embodiment, the return oil filter also includes: a filter element, which is arranged on the top side of the magnetic metal filter component and is matched and connected with the magnetic metal filter component through a filter element screw; a sealing pressure plate, which is arranged on the top side of the filter element, the inner side is abutted on the filter element, and the outer side is abutted on the step of the shell, and a mounting frame is fixedly connected to the sealing pressure plate; a fastening screw passes through the shell, is threadedly connected to the top side of the mounting frame, and is threadedly connected to the shell.

[0008] In a preferred embodiment, the oil return filter further comprises: an O-ring disposed between the sealing pressure plate and the step.

[0009] In a preferred embodiment, the oil return filter further comprises: a filter paper sleeve installed inside the magnet ring.

[0010] In a preferred embodiment, the oil return filter further comprises: annular grooves, which are provided on both sides of the magnet ring.

[0011] In a preferred embodiment, the oil return filter further comprises: a rubber plate disposed between the lower mounting plate and the housing.

[0012] In a preferred embodiment, the filter element screw and the fastening screw are coaxially arranged.

[0013] The oil return filter of the present application screws the magnetic metal filter component to the bottom side of the filter element through the filter element screw, then puts the magnetic metal filter component and the filter element into the housing, then installs the sealing pressure plate and the mounting frame on the top side of the filter element, closes the cover of the housing, and then screws the fastening screw to complete the installation of the filter element and the magnetic metal filter component. The oil to be filtered enters the inner side of the housing through the oil inlet, then enters the magnetic metal filter component through the through hole, and after being filtered once by the magnetic metal filter component, enters the filter element through the side of the housing, flows out from the top side of the filter element, undergoes secondary filtration, and is finally discharged through the oil outlet. During the entire process, impurities in the oil can be fully filtered, and the impurity filtration efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other characteristics, features and advantages of the present invention will become clear by reading the following description of the exemplary embodiments with reference to the accompanying drawings. The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A cross-sectional view of the utility model oil return filter;

[0016] Figure 2 The front view of the utility model oil return filter;

[0017] Figure 3 The structure diagram of the magnetic metal filter component of the utility model;

[0018] Figure 4 The AA position cross-sectional view of the utility model oil return filter clamp;

[0019] Figure 5 A cross-sectional view of the BB position of the utility model oil return filter;

[0020] Figure 6 An enlarged view of the position of the oil return filter C of the utility model;

[0021] In the figure: 10, housing; 11, oil inlet; 12, oil outlet; 20, magnetic metal filter component; 21, upper mounting plate; 22, magnet ring; 23, lower mounting plate; 24, connecting column; 25, through hole; 30, filter element; 31, filter element screw; 32, sealing pressure plate; 13, step; 33, mounting bracket; 34, fastening screw; 35, O-ring; 26, filter paper sleeve; 27, annular groove; 40, rubber sheet. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0023] The oil return filter is described in detail below in conjunction with the accompanying drawings and embodiments. Example

[0024] A return oil filter comprises: a shell 10, with an oil inlet 11 on the bottom side and an oil outlet 12 on the top side; a magnetic metal filter component 20, which is installed on the bottom side of the shell 10 and comprises an upper mounting plate 21, a plurality of magnet rings 22, and a lower mounting plate 23 which are arranged in parallel from top to bottom, the upper mounting plate 21, the plurality of magnet rings 22, and the lower mounting plate 23 are fixedly connected by a connecting column 24, and a through hole 25 is opened on the lower mounting plate 23, and the through hole 25 is arranged to match the oil inlet 11.

[0025] During operation, the oil to be filtered enters the inner side of the housing 10 through the oil inlet 11, then enters the magnetic metal filter component 20 through the through hole 25, and the metal impurities in the oil are magnetically attracted and filtered once by the magnetic attraction of the magnet ring 22, and finally discharged through the oil outlet 12.

[0026] During the whole process, the contact area between the oil and the surface of the magnet ring 22 is large, so the metal impurities in the oil can be completely filtered out, and the filtering efficiency of the metal impurities is high.

[0027] Among them, at least four magnet rings 22 can be provided.

[0028] The lower mounting plate 23 is sealedly connected to the housing 10 . Example

[0029] After filtering the metal impurities, there are still some non-metallic impurities in the oil. In order to filter the non-metallic impurities, by improving Example 1, the specific improvements include:

[0030] The return oil filter also includes: a filter element 30, which is arranged on the top side of the magnetic metal filter component 20 and is matched and connected with the magnetic metal filter component 20 through a filter element screw 31; a sealing pressure plate 32, which is arranged on the top side of the filter element 30, the inner side is abutted on the filter element 30, and the outer side is abutted on the step 13 of the shell 10, and a mounting bracket 33 is fixedly connected to the sealing pressure plate 32; a fastening screw 34 passes through the shell 10, is threadedly connected to the top side of the mounting bracket 33, and is threadedly connected to the shell 10.

[0031] During installation, the magnetic metal filter component 20 is screwed to the bottom side of the filter element 30 through the filter element screw 31, and then the magnetic metal filter component 20 and the filter element 30 are placed in the housing 10 together, and then the sealing pressure plate 32 and the mounting frame 33 are installed together on the top side of the filter element 30, the cover of the housing 10 is closed, and then the tightening screw 34 is tightened to complete the installation of the filter element 30 and the magnetic metal filter component 20.

[0032] During operation, the oil to be filtered enters the inner side of the housing 10 through the oil inlet 11, then enters the magnetic metal filter component 20 through the through hole 25, and after being filtered once by the magnetic metal filter component 20, enters the filter element 30 through the peripheral side of the housing 10, flows out from the top side of the filter element 30, undergoes secondary filtration, and is finally discharged through the oil outlet 12.

[0033] The whole process involves a primary filtration of metallic impurities by the filter element 30 and a secondary filtration of non-metallic impurities by the filter element 30, and the filtration efficiency of the oil is high.

[0034] The housing 10 includes a cover plate and a cylinder.

[0035] The upper mounting plate 21 has a hole groove for the filter element screw 31 to pass through, and the inner side of the through hole 25 of the lower mounting plate 23 has a mounting bracket for tightening the filter element screw 31 . Example

[0036] Embodiment 3 is aimed at improving the sealing performance of the device, and the improvement includes:

[0037] An O-ring 35 may be provided between the sealing plate 32 and the step 13 to ensure that the contact position between the sealing plate 32 and the housing 10 does not leak.

[0038] A rubber plate 40 may also be provided, and the rubber plate 40 is provided between the lower mounting plate 23 and the housing 10 , thereby ensuring that the lower mounting plate 23 is sealedly connected to the housing 10 . Example

[0039] When the oil passes through the two magnet rings 22 , metal impurities will be adsorbed by the magnet rings 22 , and as time goes by, they may cause the oil path to be blocked. In order to alleviate this problem, the oil return filter may also include an annular groove 27 , which is opened on both sides of the magnet ring 22 .

[0040] By providing evenly distributed annular grooves 27 on both sides of the magnet ring 22, metal impurities adsorbed on the magnet ring 22 will be flushed into the annular grooves 27 by the high-speed flowing oil, which can effectively alleviate the blockage of the oil circuit. When the annular grooves 27 are filled and the oil flow rate is reduced, the staff can be notified to replace the magnetic metal filter component 20. Example

[0041] In order to improve the filtering effect, a filter paper sleeve 26 can also be provided and installed inside the magnet ring 22. When the oil enters the housing 10, large particles of impurities are first filtered to prevent large particles of impurities from entering between the magnet rings 22 and causing blockage.

[0042] During installation, the filter element screw 31 and the fastening screw 34 are coaxially arranged.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0044] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. The utility model is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, and all should be included in the scope of the claims of the utility model.

Claims

1. A return oil filter, characterized in that: include: The housing (10) has an oil inlet (11) on the bottom side and an oil outlet (12) on the top side; A magnetic metal filter component (20) is mounted on the bottom side of the housing (10), comprising an upper mounting plate (21), a plurality of magnet rings (22), and a lower mounting plate (23) which are arranged in parallel from top to bottom, the upper mounting plate (21), the plurality of magnet rings (22), and the lower mounting plate (23) being fixedly connected via a connecting column (24), and a through hole (25) is provided on the lower mounting plate (23), the through hole (25) being arranged to match the oil inlet (11).

2. The oil return filter according to claim 1, characterized in that: The oil return filter also includes: A filter element (30) is arranged on the top side of the magnetic metal filter component (20) and is matched and connected to the magnetic metal filter component (20) via a filter element screw (31); A sealing pressure plate (32) is arranged on the top side of the filter element (30), with its inner side being in contact with the filter element (30) and its outer side being in contact with the step (13) of the housing (10), and a mounting frame (33) being fixedly connected to the sealing pressure plate (32); A fastening screw (34) passes through the housing (10), is threadedly connected to the top side of the mounting frame (33), and is also threadedly connected to the housing (10).

3. The oil return filter according to claim 2, characterized in that: The oil return filter also includes: An O-ring (35) is arranged between the sealing pressure plate (32) and the step.

4. The oil return filter according to claim 1, characterized in that: The oil return filter also includes: A filter paper sleeve (26) is installed inside the magnet ring (22).

5. The oil return filter according to claim 1, characterized in that: The oil return filter also includes: Annular grooves (27) are provided on both sides of the magnet ring (22).

6. The oil return filter according to claim 1, characterized in that: The oil return filter also includes: A rubber plate (40) is arranged between the lower mounting plate (23) and the housing (10).

7. The oil return filter according to claim 2, characterized in that The filter element screw (31) and the fastening screw (34) are coaxially arranged.

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