An oil filter with a function of releasing an oil corrosion inhibitor

Abstract

The application discloses a machine oil filter with a machine oil corrosion inhibitor releasing function, which comprises a shell and a filter core fixedly arranged in the shell, the filter core divides the space in the shell into a to-be-filtered area and a filtered area, and a slow-release module is further fixedly arranged in the shell, the slow-release module comprises a cavity provided with a containing cavity, the inlet of the containing cavity is communicated with the to-be-filtered area, a one-way valve is arranged in the inlet, a compression spring is arranged in the one-way valve, the compression spring abuts against the valve of the one-way valve and is in a compressed state, and the outlet of the containing cavity is communicated with the filtered area; when the oil pressure in the to-be-filtered area increases, the oil pressure overcomes the resistance of the compression spring and opens the valve of the one-way valve, the oil in the to-be-filtered area enters the cavity, so that the machine oil corrosion inhibitor in the cavity is discharged into the filtered area through the outlet; and the machine oil corrosion inhibitor entering the filtered area enters a lubricating system together with filtered oil and maintains metal parts in the lubricating system.

Description

Technical Field

[0001] This utility model relates to oil filters, specifically to an oil filter with the function of releasing oil corrosion inhibitors. Background Technology

[0002] Currently, the mainstream fuels for engines in China are mainly divided into two categories: traditional fossil fuels and alternative fuels. With the advancement of the "dual-carbon" policy and technological innovation, the fuel structure is showing a diversified development trend. The future focus will shift from traditional fuels to green alternative fuels, among which alcohol fuels have ushered in development opportunities due to their dual advantages in environmental protection and economy. With the development of methanol engine technology, the corrosion problem of the lubrication system caused by methanol fuel combustion remains to be solved. Methanol fuel engine oil corrosion inhibitors are key additives for solving the corrosion of metal parts by the highly corrosive substances of methanol fuel (such as formic acid, formaldehyde, and other acidic products). Traditional corrosion inhibitors are generally added directly to the lubricating oil and replaced along with the lubricating oil during maintenance. Because corrosion inhibitors are used at high concentrations and consumed quickly (especially in high-temperature, high-humidity, or acidic environments), frequent replenishment is required, causing inconvenience to users. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides an oil filter with the function of releasing oil corrosion inhibitor, aiming to achieve slow addition of oil corrosion inhibitor, thereby extending the oil corrosion inhibitor addition time or vehicle maintenance time.

[0004] An oil filter with the function of releasing oil corrosion inhibitor includes a housing and a filter element fixedly disposed within the housing. The filter element divides the space within the housing into a region to be filtered and a region that has been filtered. A slow-release module is also fixedly disposed within the housing. The slow-release module includes a cavity with a receiving chamber for adding oil corrosion inhibitor. The inlet of the receiving chamber is connected to the region to be filtered. A one-way valve is disposed within the inlet to allow liquid to flow into the receiving chamber in only one direction. A compression spring is disposed within the one-way valve and is in a compressed state against the valve of the one-way valve. The outlet of the receiving chamber is connected to the region that has been filtered.

[0005] Furthermore, a first channel and a second channel are provided within the accommodating cavity. The outer end of the first channel is located on the outer wall of the cavity and serves as the inlet of the accommodating cavity, while the inner end of the first channel is located at the top of the accommodating cavity. The outer end of the second channel is located on the outer wall of the cavity and serves as the outlet of the accommodating cavity, while the inner end of the second channel is located at the bottom of the cavity.

[0006] Further, the filter element includes an upper end cover and a lower end cover, and a cylindrical filter element body fixedly connected between the two. An oil outlet is provided on the upper end cover, which communicates with the hollow part of the filter element body. The cavity is fixedly installed in the hollow part of the filter element body. A gap is left between the side wall of the cavity body and the inner wall of the filter element body for liquid to pass through. A relief port is provided in the middle of the lower end cover. The bottom of the cavity body is sealed with the relief port. The outer end port of the first channel is located in the relief port.

[0007] Furthermore, a sealing ring is provided between the bottom of the cavity and the relief opening to seal the gap between the two.

[0008] Further, a column is integrally formed on the bottom surface of the accommodating cavity, with its top located at the top of the accommodating cavity. A groove is formed on the top surface of the column, and a vertical first through hole is formed on the bottom surface of the groove. The lower end of the first through hole is located on the bottom surface of the outer wall of the cavity. A horizontal second through hole is formed on the side wall of the groove, with its outer end located on the outer wall of the column. A plug, the compression spring, and the valve are arranged sequentially from top to bottom in the groove. The plug is fixedly connected to the groove opening. The two ends of the compression spring abut against the plug and the valve, respectively. The valve abuts against the inner end of the first through hole. The first through hole, the second through hole, and the groove form the first channel. The valve, the compression spring, the groove, and the plug constitute the one-way valve.

[0009] Furthermore, the valve is made of a steel ball.

[0010] Furthermore, the second channel is a vertical structure located on the inner wall of the cavity, with its lower end port being its inner end port and its upper end port being its outer end port located on the top surface of the cavity.

[0011] Furthermore, the lower end cap and the bottom of the cavity are both snapped onto the bottom surface of the housing.

[0012] Furthermore, the cavity includes a base and a vertical cylinder. The lower end of the cylinder is an open structure. An annular boss is integrally provided on the edge of the base. The lower end of the cylinder is fixedly sleeved on the annular boss. The inner wall of the lower end of the cylinder and the outer wall of the annular boss are sealed together.

[0013] Furthermore, a bypass valve is provided on the upper end cover.

[0014] The beneficial effects of this invention are as follows: By setting a cavity filled with oil corrosion inhibitor inside the oil filter, and setting a one-way valve inside the cavity, when the oil pressure in the area to be filtered increases, the oil pressure overcomes the resistance of the compression spring and opens the valve of the one-way valve, allowing the oil in the area to be filtered to enter the cavity, thereby causing the oil corrosion inhibitor in the cavity to be discharged from the outlet into the filtered area; the oil corrosion inhibitor entering the filtered area enters the lubrication system along with the filtered oil and maintains the metal parts in the methanol fuel engine, realizing the slow release of oil corrosion inhibitor into the lubrication system, thereby extending the oil corrosion inhibitor filling time or vehicle maintenance time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cavity structure of this utility model. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings. Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The directional terms such as left, center, right, top, and bottom in the embodiments of the present invention are only relative concepts or referenced to the normal use state of the product, and should not be considered restrictive.

[0017] An oil filter with the function of releasing oil corrosion inhibitor, such as Figure 1 As shown, the device includes a housing 1 and a filter element 2 fixedly disposed within the housing 1. The housing 1 is a cylindrical structure with an open top or a fully enclosed top. The filter element 2 divides the space within the housing 1, forming a region to be filtered and a region that has been filtered. In this embodiment, the region outside the filter element within the housing 1 is the region to be filtered, and the region inside the filter element is the region that has been filtered. A slow-release module is also fixedly disposed within the housing 1. The slow-release module includes a cavity 3 with a receiving chamber 30 for adding oil corrosion inhibitor. The inlet 31 of the receiving chamber 30 communicates with the region to be filtered. A one-way valve 6 is disposed within the inlet 31 to ensure that liquid can only flow into the receiving chamber 30 in one direction. Figure 2As shown, a compression spring 62 is installed inside the one-way valve 6. The compression spring 62 abuts against the valve 61 of the one-way valve 6 and is in a compressed state. The outlet 32 ​​of the receiving cavity 30 is connected to the filtered area. Specifically, since the density of engine oil (lubricating oil) is less than that of engine oil corrosion inhibitor, in order to facilitate the smooth expulsion of engine oil corrosion inhibitor from the receiving cavity 30 after the engine oil (lubricating oil) enters the receiving cavity 30, a first channel 35 and a second channel 33 are provided in the receiving cavity 30. The outer end of the first channel 35 is located on the outer wall of the cavity 3 and serves as the receiving cavity 3. The filter element 2 has an inlet 31, and the inner end port of the first channel 35 is located at the top of the receiving cavity 30. The outer end port of the second channel 33 is located on the outer wall of the cavity 3 and serves as the outlet of the receiving cavity 30. The inner end port of the second channel 33 is located at the bottom of the cavity 3. To improve compactness, the filter element 2 includes an upper end cover 21 and a lower end cover 23, and a cylindrical filter element 22 fixedly connected between the two. An oil outlet 211 is provided on the upper end cover 21, which communicates with the hollow part of the filter element 22. The cavity 3 is fixedly installed on the filter element 22. Inside the hollow section, a gap is left between the side wall of the cavity 3 and the inner wall of the filter element 22 for liquid to pass through. A clearance port 231 is provided in the middle of the lower end cover 23, and the bottom of the cavity 3 is sealed to the clearance port 231. Specifically, a sealing ring is provided between the bottom of the cavity 3 and the clearance port 231 to seal the gap between them, preventing oil in the area to be filtered from entering the filtered area through the gap between the cavity 3 and the clearance port 231. The outer end of the first channel 35 is located inside the clearance port 231. In this embodiment, the clearance port 231 is provided for... To facilitate the installation of the corresponding bypass valve 5 at the upper end cover 21, the bypass valve 5 in this embodiment has the same structure as the bypass valve in a novel oil filter assembly with a bypass valve filter element disclosed in CN216950519U. The return spring 51 that makes up the bypass valve 5 abuts against the top surface of the cavity 3. In other embodiments, the bottom of the cavity 3 and the lower end cover 23 can be integrated, thereby avoiding the need to set a clearance port 231 in the middle of the lower end cover 23. Other types of bypass valves can be set at the oil outlet 211 of the upper end cover 21.

[0018] An integral column 34 is provided on the bottom surface of the accommodating cavity 30. The top of the column 34 is located at the top of the accommodating cavity 30. A groove 353 is provided on the top surface of the column 34. A vertical first through hole 351 is opened on the bottom surface of the groove 353. The lower end of the first through hole 351 is located on the bottom surface of the outer wall of the cavity 3. A horizontal second through hole 352 is opened on the side wall of the groove 353. The outer end of the second through hole 352 is located on the outer wall of the column 34. A plug 63, a compression spring 62, and a valve 61 are arranged sequentially from top to bottom in the groove 353. The plug 63 is fixedly connected to the groove opening of the groove 353. The two ends of the compression spring 62 abut against the plug 63 and the valve 61, respectively. On the valve 61, the valve 61 is a steel ball that abuts against the inner end port of the first through hole 351 under the action of the compression spring 62. To facilitate the cooperation with the valve 61, the inner end of the first through hole 351 has a narrow neck structure, the diameter of which is smaller than the diameter of the steel ball. The first through hole 351, the second through hole 352, and the groove 353 form the first channel 35. The valve 61, the compression spring 62, the groove 353, and the plug 63 constitute the one-way valve 6. When the oil pressure in the area to be filtered increases and overcomes the pressure applied to the valve 61 by the compression spring 62, the valve 61 opens the inner end port of the first through hole 351, and the oil can enter the receiving cavity 30 from the area to be filtered. The second channel 33 is a vertical structure and is located on the inner wall of the cavity 3. The lower end port of the second channel 33 is its inner end port, and the upper end port of the second channel 33 is its outer end port and is located on the top surface of the cavity 3.

[0019] In addition, the cavity 3 includes a base 37 and a vertical cylindrical body 36. The lower end of the cylindrical body 36 is an open structure. An annular boss 371 is integrally provided on the edge of the base 37. The lower end port of the cylindrical body 36 is fixedly sleeved on the annular boss 371. The inner wall of the lower end of the cylindrical body 36 and the outer wall of the annular boss 371 are sealed by a sealing ring. The column 34 is located in the middle of the base 37 and is integrally provided with it. The side wall of the base 37 and the inner wall of the clearance opening are sealed by a sealing ring. A snap-fit ​​assembly 4 is provided between the base 37 and the bottom surface of the housing 1, and between the lower end cover 23 and the bottom surface of the housing 1. The lower end cover 23 and the bottom of the cavity 3 are snapped to the bottom surface of the housing 1 by the snap-fit ​​assembly 4.

[0020] During operation, engine oil (lubricating oil) enters the filtration area within housing 1, and then, under oil pressure, is filtered by filter element 2 and enters the filtered area. After a period of use, the permeability of filter element 2 decreases, leading to an increase in oil pressure within the filtration area. At this point, the oil in the filtration area can overcome the resistance of compression spring 62 and open valve 61 of check valve 6, allowing the oil in the filtration area to enter the receiving cavity 30. This allows the oil corrosion inhibitor in the receiving cavity 30 to be discharged from outlet 32 ​​into the filtered area. Alternatively, when the oil in the filtration area... When hydraulic pressure fluctuates, the fluctuating oil pressure overcomes the resistance of the compression spring 62 and opens the valve 61 of the one-way valve 6, allowing the oil in the filter area to enter the receiving chamber 30. This allows the oil corrosion inhibitor in the receiving chamber 30 to be discharged from the outlet 32 ​​into the filtered area. The oil corrosion inhibitor entering the filtered area enters the lubrication system along with the filtered oil and maintains the metal parts in the methanol fuel engine, achieving a slow release of the oil corrosion inhibitor into the lubrication system, thereby extending the oil corrosion inhibitor filling time or vehicle maintenance time.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil filter with the function of releasing oil corrosion inhibitor, comprising a housing and a filter element fixedly disposed within the housing, the filter element dividing the space within the housing to form a filterable area and a filtered area, characterized in that: A slow-release module is also fixedly installed inside the housing. The slow-release module includes a cavity with a receiving chamber for adding oil corrosion inhibitor. The inlet of the receiving chamber is connected to the area to be filtered. A one-way valve is installed in the inlet to ensure that the liquid can only flow into the receiving chamber in one direction. A compression spring is installed inside the one-way valve. The compression spring abuts against the valve of the one-way valve and is in a compressed state. The outlet of the receiving chamber is connected to the filtered area.

2. The oil filter with the function of releasing oil corrosion inhibitor according to claim 1, characterized in that: A first channel and a second channel are provided in the accommodating cavity. The outer end of the first channel is located on the outer wall of the cavity and serves as the inlet of the accommodating cavity, while the inner end of the first channel is located at the top of the accommodating cavity. The outer end of the second channel is located on the outer wall of the cavity and serves as the outlet of the accommodating cavity, while the inner end of the second channel is located at the bottom of the cavity.

3. The oil filter with the function of releasing oil corrosion inhibitor according to claim 2, characterized in that: The filter element includes an upper end cover and a lower end cover, and a cylindrical filter element body fixedly connected between the two. An oil outlet is provided on the upper end cover, which communicates with the hollow part of the filter element body. The cavity is fixedly installed in the hollow part of the filter element body. A gap is left between the side wall of the cavity body and the inner wall of the filter element body for liquid to pass through. A relief port is provided in the middle of the lower end cover. The bottom of the cavity body is sealed with the relief port. The outer end port of the first channel is located in the relief port.

4. The oil filter with the function of releasing oil corrosion inhibitor according to claim 3, characterized in that: A sealing ring is provided between the bottom of the cavity and the relief opening to seal the gap between the two.

5. The oil filter with the function of releasing oil corrosion inhibitor according to claim 3, characterized in that: A column is integrally formed on the bottom surface of the accommodating cavity. The top of the column is located at the top of the accommodating cavity. A groove is formed on the top surface of the column. A vertical first through hole is formed on the bottom surface of the groove. The lower end of the first through hole is located on the bottom surface of the outer wall of the cavity. A horizontal second through hole is formed on the side wall of the groove. The outer end of the second through hole is located on the outer wall of the column. A plug, the compression spring, and the valve are arranged sequentially from top to bottom in the groove. The plug is fixedly connected to the groove opening. The two ends of the compression spring abut against the plug and the valve, respectively. The valve abuts against the inner end of the first through hole. The first through hole, the second through hole, and the groove form the first channel. The valve, the compression spring, the groove, and the plug constitute the one-way valve.

6. The oil filter with the function of releasing oil corrosion inhibitor according to claim 5, characterized in that: The valve is made of steel ball.

7. The oil filter with the function of releasing oil corrosion inhibitor according to claim 3, characterized in that: The second channel is a vertical structure located on the inner wall of the cavity. The lower end port of the second channel is its inner end port, and the upper end port of the second channel is its outer end port located on the top surface of the cavity.

8. The oil filter with the function of releasing oil corrosion inhibitor according to claim 3, characterized in that: The lower end cap and the bottom of the cavity are both snapped onto the bottom surface of the housing.

9. The oil filter with the function of releasing oil corrosion inhibitor according to claim 3, characterized in that: The cavity includes a base and a vertical cylinder. The lower end of the cylinder is an open structure. An annular boss is integrally provided on the edge of the base. The lower end of the cylinder is fixedly sleeved on the annular boss. The inner wall of the lower end of the cylinder and the outer wall of the annular boss are sealed together.

10. The oil filter with the function of releasing oil corrosion inhibitor according to claim 9, characterized in that: A bypass valve is installed on the upper end cover.

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