Engine oil supply system with three-stage filter

Abstract

The utility model discloses an engine oil supply system with a three-stage filter. The engine oil supply system comprises a filtering assembly communicated to an oil supply pipeline. The filtering assembly comprises a first-stage filter, a second-stage filter and a third-stage filter which are sequentially connected to the oil supply pipeline. Firstly, coarse filtration is performed through the first-stage filter, water and particles with the diameter of 20 micrometers or above are removed, and the water flows out of the water outlet. And the second-stage filter is responsible for filtering particles with the diameter of more than 10 microns and further filtering residual water at the same time. And the drainage valve of the second-stage filter controls the electronic valve to drain water after detecting moisture. And in the third-stage filter, particles with the diameter of more than 4 microns are filtered. The filtering assembly provided by the embodiment of the utility model can provide clean fuel oil for the engine used in the mine working condition.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an engine oil supply system with a three-stage filter. Background Art

[0002] With the development of technology, most diesel engines are equipped with high-pressure common rail fuel systems, which require a higher pressure of up to 2000 bar and stricter tolerance.

[0003] When organic or inorganic contaminants, including water and impurities, seep into the fuel supply system, fuel components are susceptible to damage. A key component in preventing these potential hazards is the diesel filter. Located in the engine's fuel supply system, the diesel filter removes water and solid impurities like iron oxide and dust from the fuel, providing the engine with clean, water- and impurity-free fuel. This protects precision components in the engine's electronic fuel injection system, such as the injection valve and cold start valve, improving engine performance and extending its service life.

[0004] Existing excavator engine systems are equipped with a water filter and a particle filter to filter out water and impurities, respectively. However, in actual use, the existing filter components cannot meet the needs of excavators, and impurities and water cannot be completely filtered out, causing the excavator's fuel system to malfunction.

[0005] Therefore, in order to more fully filter the moisture and particles in the fuel of an excavator in a working condition similar to a mine, the present application provides an engine fuel supply system with a three-stage filter. Utility Model Content

[0006] In order to overcome the problems existing in the related art, the present application provides an engine oil supply system with a three-stage filter, comprising: a filter assembly connected to the oil supply pipeline;

[0007] The oil inlet of the oil supply pipeline is connected to the oil tank, and the oil outlet of the oil supply pipeline is connected to the engine cylinder;

[0008] The oil supply pipeline is connected to the oil pump, and the filter assembly includes a first-stage filter, a second-stage filter and a third-stage filter connected to the oil supply pipeline in sequence;

[0009] The first-stage filter includes a first mounting shell, a first filter element, and a drain port;

[0010] The second-stage filter includes a second mounting shell, a second filter element and a drain valve;

[0011] The third-stage filter includes a third mounting shell and a third filter element;

[0012] The oil inlet of the third-stage filter is connected to the oil outlet of the second-stage filter, the oil outlet of the third-stage filter is connected to the engine oil injection pipeline, and the third-stage filter is arranged on the side of the engine cylinder.

[0013] In one embodiment, the first filter element, the second filter element, and the third filter element are hollow tube structures;

[0014] The outer wall of the first filter element is in contact with the inner wall of the first mounting shell and is placed in the first mounting shell; the outer wall of the second filter element is in contact with the inner wall of the second mounting shell and is placed in the second mounting shell; the outer wall of the third filter element is in contact with the inner wall of the third mounting shell and is placed in the third mounting shell;

[0015] The top of the hollow tube structure is connected to the oil inlet, and the middle hollow area of the hollow tube structure is connected to the oil outlet.

[0016] In one embodiment, the drain port of the first-stage filter is connected to the bottom of the first filter element, and the oil outlet is connected to the middle hollow area of the first filter element.

[0017] In one embodiment, the second-stage filter is further provided with a drain valve, which is connected to the bottom of the first filter element and is provided with a moisture sensor and an electronic valve.

[0018] In one embodiment, the first filter element is used to filter water and foreign particles with a diameter of 20 microns or more, and the water separation efficiency of the first filter element is greater than or equal to %.

[0019] In one embodiment, the second filter element is used to filter water and foreign particles with a diameter of more than 10 microns.

[0020] In one embodiment, the third filter element is used to filter foreign particles with a diameter of more than 4 microns.

[0021] In one embodiment, the resistance of the first-stage filter is less than or equal to 7 kPa, and the resistance of the second-stage filter and the third-stage filter is less than or equal to 10 kPa.

[0022] In one embodiment, the rated flow rate of the filter component is 15 L / min.

[0023] The technical solution provided by this application may have the following beneficial effects:

[0024] In the present application, a coarse filtration is first performed through the first-stage filter to remove moisture and particles with a diameter of more than 20 microns, and the moisture flows out from the drain port. The second-stage filter is responsible for filtering particles with a diameter of more than 10 microns, and further filtering the residual moisture. After the drain valve of the second-stage filter detects moisture, it controls the electronic valve to drain water. In the third-stage filter, particles with a diameter of more than 4 microns are filtered. The filter assembly of the embodiment of the present application can provide clean fuel to the engine used in mining conditions.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of the engine fuel supply system shown in an embodiment of the present application;

[0028] Figure 2 for Figure 1 A schematic structural diagram of the first-stage filter of the engine fuel supply system shown;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the second stage filter of the engine fuel supply system shown;

[0030] Figure 4 for Figure 1 A schematic diagram of the structure of the third-stage filter of the engine fuel supply system shown;

[0031] Description of the accompanying drawings: oil supply pipeline 1, filter assembly 2, oil pump 3, first-stage filter 10, second-stage filter 20, third-stage filter 30, first mounting shell 101, first filter element 102, drain port 103, second mounting shell 201, second filter element 202, drain valve 203, third mounting shell 301, third filter element 302, moisture sensor 2031, electronic valve 2032. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0033] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0034] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] During the working conditions of the excavator, the fuel quality in the mine is easily polluted by the environment, resulting in a high content of water and impurities in the fuel.

[0036] Existing excavator engine systems are equipped with a water filter and a particle filter to filter out water and impurities, respectively. However, in actual use, the existing filter components cannot meet the needs of excavators, and impurities and water cannot be completely filtered out, causing the excavator's fuel system to malfunction.

[0037] Therefore, in order to more perfectly filter the fuel moisture and particles of the excavator in the mining working conditions, the embodiment of the present application provides an engine fuel supply system with a three-stage filter, such as Figure 1 As shown, it includes: a filter component 2 connected to the oil supply pipeline 1.

[0038] like Figure 1 As shown in the figure, the oil inlet of the oil supply pipe 1 is connected to the oil tank, and the oil outlet of the oil supply pipe 1 is connected to the engine cylinder; the oil supply pipe 1 is connected to the oil pump 3, and the filter assembly 2 includes a first-stage filter 10, a second-stage filter 20 and a third-stage filter 30 connected to the oil supply pipe 1 in sequence.

[0039] Specifically, the installation structure of the filter assembly is as follows Figure 1 As shown, the oil inlet of the third-stage filter 30 is connected to the oil outlet of the second-stage filter 20, the oil outlet of the third-stage filter 30 is connected to the engine fuel injection pipe, and the third-stage filter 30 is arranged on the side of the engine cylinder.

[0040] In the embodiment of the present application, the third-stage filter 30 is arranged on one side of the oil supply pipe 1, and the oil supply pipe 1 is connected to the top of the engine cylinder for oil supply.

[0041] Further, Figures 2 to 4 This is a schematic diagram of the component structure of the filter assembly 2. The first-stage filter 10 includes a first mounting shell 101, a first filter element 102, and a drain port 103; the second-stage filter 20 includes a second mounting shell 201, a second filter element 202, and a drain valve 203; and the third-stage filter 30 includes a third mounting shell 301 and a third filter element 302.

[0042] Specifically, the first filter element 102, the second filter element 202, and the third filter element 302 are hollow tube structures. The outer wall of the first filter element 102 is aligned with the inner wall of the first mounting shell 101 and is placed within the first mounting shell 101; the outer wall of the second filter element 202 is aligned with the inner wall of the second mounting shell 201 and is placed within the second mounting shell 201; and the outer wall of the third filter element 302 is aligned with the inner wall of the third mounting shell 301 and is placed within the third mounting shell 301. The top of the hollow tube structure is connected to the oil inlet, and the hollow area in the middle of the hollow tube structure is connected to the oil outlet.

[0043] like Figure 2 As shown, the drain port 103 of the first-stage filter 10 is connected to the bottom of the first filter element 102 , and the oil outlet is connected to the middle hollow area of the first filter element 102 .

[0044] like Figure 3 As shown, the second-stage filter 20 is further provided with a drain valve 203 , which is connected to the bottom of the first filter element 102 . The drain valve 203 is provided with a moisture sensor 2031 and an electronic valve 2032 .

[0045] In the embodiment of the present application, each filter has a different filtering effect. Specifically, the first filter element 102 is used to filter water and impurity particles with a diameter of 20 microns or larger, and the water separation efficiency of the first filter element 102 is greater than or equal to 95%. The second filter element 202 is used to filter water and impurity particles with a diameter of 10 microns or larger. The third filter element 302 is used to filter impurity particles with a diameter of 4 microns or larger.

[0046] To prevent fuel system pressure from dropping due to filter resistance, in this embodiment, the resistance of the first-stage filter 10 is less than or equal to 7 kPa, and the resistance of the second-stage filter and the third-stage filter is less than or equal to 10 kPa. The rated flow rate of the filter assembly 2 is 15 L / min.

[0047] In this embodiment, first-stage filter 10 performs a coarse filtration, removing water and particles larger than 20 microns in diameter. Water then flows out of drain port 103. Second-stage filter 20 filters particles larger than 10 microns and further filters any remaining water. Drain valve 203 of second-stage filter 20 detects water and controls electronic valve 2032 to drain the water. Third-stage filter 30 filters particles larger than 4 microns in diameter.

[0048] The filter assembly 2 of the embodiment of the present application can provide clean fuel to the engine used in mining conditions.

[0049] Various embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments.

[0050] Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein is selected to best explain the principles of the various embodiments, their practical applications, or improvements to the technology in the marketplace, or to enable other persons skilled in the art to understand the various embodiments disclosed herein.

Claims

1. An engine fuel supply system with a three-stage filter, characterized in that: include: A filter assembly (2) connected to the oil supply pipeline (1); The oil inlet of the oil supply pipeline (1) is connected to the oil tank, and the oil outlet of the oil supply pipeline (1) is connected to the engine cylinder; The oil supply pipeline (1) is connected to an oil pump (3), and the filter assembly (2) comprises a first-stage filter (10), a second-stage filter (20), and a third-stage filter (30) which are sequentially connected to the oil supply pipeline (1); The first-stage filter (10) comprises a first mounting shell (101), a first filter element (102) and a drain outlet (103); The second-stage filter (20) comprises a second mounting shell (201), a second filter element (202) and a drain valve (203); The third-stage filter (30) includes a third mounting shell (301) and a third filter element (302); The oil inlet of the third-stage filter (30) is connected to the oil outlet of the second-stage filter (20), the oil outlet of the third-stage filter (30) is connected to the engine oil injection pipeline, and the third-stage filter (30) is arranged on the side of the cylinder of the engine.

2. The engine oil supply system with a three-stage filter according to claim 1, characterized in that: The first filter element (102), the second filter element (202), and the third filter element (302) are hollow tube structures; The outer wall of the first filter element (102) is in contact with the inner wall of the first installation shell (101) and is placed in the first installation shell (101); The outer wall of the second filter core (202) is in contact with the inner wall of the second mounting shell (201) and is placed in the second mounting shell (201); the outer wall of the third filter core (302) is in contact with the inner wall of the third mounting shell (301) and is placed in the third mounting shell (301); The top of the hollow tube structure is connected to the oil inlet, and the middle hollow area of the hollow tube structure is connected to the oil outlet.

3. The engine oil supply system with a three-stage filter according to claim 2, characterized in that: The drain port (103) of the first-stage filter (10) is connected to the bottom of the first filter element (102), and the oil outlet is connected to the middle hollow area of the first filter element (102).

4. The engine oil supply system with a three-stage filter according to claim 2, characterized in that: The second-stage filter (20) is further provided with a drain valve (203), the drain valve (203) being connected to the bottom of the first filter element (102), and the drain valve (203) being provided with a moisture sensor (2031) and an electronic valve (2032).

5. The engine oil supply system with a three-stage filter according to claim 1, characterized in that: The first filter element (102) is used to filter water and foreign particles with a diameter of more than 20 microns, and the water separation efficiency of the first filter element (102) is greater than or equal to 95%.

6. The engine oil supply system with a three-stage filter according to claim 1, characterized in that: The second filter element (202) is used to filter water and foreign particles with a diameter of more than 10 microns.

7. The engine oil supply system with a three-stage filter according to claim 1, characterized in that: The third filter element (302) is used to filter foreign particles with a diameter of more than 4 microns.

8. The engine oil supply system with a three-stage filter according to claim 1, characterized in that: The resistance of the first-stage filter (10) is less than or equal to 7 kPa, and the resistance of the second-stage filter (20) and the third-stage filter (30) is less than or equal to 10 kPa.

9. The engine oil supply system with a three-stage filter according to claim 1, characterized in that: The rated flow rate of the filter component (2) is 15 L / min.

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