Self-cleaning engine oil filter

Abstract

The utility model provides a self-cleaning oil filter which comprises a shell with an oil inlet and an oil outlet, a filter element arranged in the shell and communicated with the oil outlet, a check valve arranged between the filter element and the oil inlet, and an ultrasonic transducer, the ultrasonic transducer penetrates through the shell, and the generating end of the ultrasonic transducer is connected with the filter element; and an openable drain outlet is formed in the shell. According to the invention, the ultrasonic transducer is adopted to generate high-frequency vibration, so that particulate matters accumulated on the filter screen are separated from the filter screen under the action of the high-frequency vibration, the self-cleaning function of the filter screen is realized, the cyclic utilization of the engine oil filter is realized, and the maintenance cost of a vehicle is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of oil filters, and in particular relates to a self-cleaning oil filter. Background Art

[0002] The oil filter is used to filter the engine oil and reduce the fine particles in the oil, thereby ensuring the normal and efficient operation of the engine. As the traditional oil filter accumulates over time, a large amount of particles will accumulate on the filter screen, thus affecting the filtering effect of the oil filter. Generally speaking, each vehicle needs to replace the entire set of oil filters every 5,000-10,000 kilometers, and more than 300 grams of environmental pollutants are generated, which not only increases maintenance costs, but also easily causes environmental pollution. Summary of the invention

[0003] The object of the present invention is to provide a self-cleaning oil filter, which can automatically remove tiny impurities and particles accumulated on the filter screen, thereby reducing maintenance costs and extending service life.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-cleaning oil filter, comprising a shell having an oil inlet and an oil outlet, a filter element arranged in the shell and connected to the oil outlet, and a check valve arranged between the filter element and the oil inlet, the self-cleaning oil filter also comprising an ultrasonic transducer, which is installed through the shell and has a generating end connected to the filter element; an openable drain port is provided on the shell.

[0005] Furthermore, the housing comprises a cover plate, a housing, an end cover, a sealing ring and a threaded plug;

[0006] The end cover is installed at one end of the shell, and the other end is provided with a sewage outlet for installing the threaded plug; a cover plate is installed on the central inner side of the end cover, and a sealing ring is installed on the outer side thereof; the cover plate has an oil inlet and an oil outlet.

[0007] Furthermore, the cover plate has a central tube body forming the oil outlet and an annular plate body connected to the outer periphery of the central tube body, and the oil inlet is arranged on the annular plate body.

[0008] Furthermore, the check valve has a circle of flaps, which contact with the inner end surface of the annular plate body to form a seal when no oil is flowing in, and separate from the inner end surface of the annular plate body to form conduction when oil is flowing in.

[0009] Furthermore, the filter element includes a skeleton, a filter screen, a first end cover and a second end cover; the first end cover is installed at one end of the skeleton, the second end cover is installed at the other end, and the filter screen is installed on its periphery, the first end cover is sealingly connected to the check valve and its center hole is connected to the oil outlet; the ultrasonic transducer is connected to the second end cover.

[0010] Furthermore, a buffer component is included, and the buffer component is arranged between the second end cover and the shell.

[0011] Furthermore, the frame and the filter are both metal parts.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention uses an ultrasonic transducer to generate high-frequency vibration, so that the particles attached to the filter are separated from the filter under the action of high-frequency vibration, thereby realizing the self-cleaning function of the filter, realizing the recycling of the oil filter, and reducing the maintenance cost of the vehicle.

[0014] 2. The present invention uses a regular sewage discharge method to achieve effective recovery of particulate matter, which is convenient for subsequent unified treatment and reduces the pollution to the environment caused by improper disposal.

[0015] 3. The filter screen and frame made of metal material used in the present invention can not only better cope with the temperature rise environment generated when the ultrasonic transducer is working, but also better transmit high-frequency vibration to achieve better decontamination effect.

[0016] 4. The present invention adopts a buffer component to achieve buffering of the filter element, reduce the adverse effects of the filter element under high-frequency vibration, and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural stereogram of a preferred embodiment of the present invention;

[0018] Figure 2 for Figure 1 A top view of the structure of the illustrated embodiment;

[0019] Figure 3 for Figure 2 Structural cross-section view along the AA axis;

[0020] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0021] Figure 5 for Figure 1 A schematic diagram of the working of the embodiment shown in the figure during filtering (the arrows in the figure indicate the direction of oil flow);

[0022] Figure 6 for Figure 1 The working schematic diagram of the embodiment shown in the figure during sewage discharge (the arrows in the figure indicate the flow direction of sewage);

[0023] Figure 7 for Figure 1 A structural stereogram of the first end cover in the illustrated embodiment;

[0024] Figure 8 for Figure 1 A structural stereogram of the second end cover in the illustrated embodiment;

[0025] Fig. 9 for Figure 1 A structural stereogram of the buffer component in the illustrated embodiment;

[0026] Fig.10 for Figure 1 A structural stereogram of the housing in the illustrated embodiment. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 10 As shown, a self-cleaning oil filter comprises a housing with an oil inlet 1.2 and an oil outlet 1.3, a filter element arranged in the housing 5 and connected to the oil outlet 1.3, and a check valve 15 arranged between the filter element and the oil inlet 1.2. The self-cleaning oil filter also comprises an ultrasonic transducer 8, which is installed through the housing and its generating end is connected to the filter element. The ultrasonic transducer 8 is externally connected to an ultrasonic generator to convert the mains 50 / 60HZ into >20KHZ. The ultrasonic transducer 8 converts high-frequency electrical energy into high-frequency mechanical energy with an amplitude of several microns and acts on the filter element. An openable drain port 5.1 is arranged on the housing.

[0029] As a preferred example, the housing includes a cover plate 1 , a housing 5 , an end cover 3 , a sealing ring 2 and a threaded plug 12 .

[0030] The housing 5 has a cylindrical structure 5.2 and a plugging body 5.3 integrally connected to the lower end of the cylindrical structure 5.2. The upper end of the cylindrical structure 5.2 is an open structure for installing the end cover 3. The cylindrical structure 5.2 is provided with a mounting hole 5.3 for installing the ultrasonic transducer 8. A sewage outlet 5.1 is provided in the center of the plugging body 5.3. The outer side of the sewage outlet 5.1 is fixed with a nut 11 by a sealant to provide a condition for the threaded plug 12 to block the sewage outlet 5.1 after installation, and can also be removed to make the sewage outlet 5.1 conductive for sewage discharge.

[0031] The outer edge of the end cover 3 has a skirt structure, and is sealed and installed at the upper open end of the cylindrical structure 5.2 by riveting. An opening is set in the center of the end cover 3, and a circle of protruding structure 3.1 is set on one side of the opening by bending process, which is used to seal and install the sealing ring 2. The sealing ring 2 can form a seal at the connection when the oil filter is connected to the engine to prevent oil leakage. A cover plate 1 is installed on the inner side of the opening of the end cover 3, and the cover plate 1 has an oil inlet 1.2 and an oil outlet 1.3.

[0032] As a preferred example, the cover plate 1 comprises a central tube body forming an oil outlet 1.3 and an annular plate body 1.1 connected to the outer periphery of the central tube body, and a plurality of oil inlets 1.2 are evenly distributed on the annular plate body 1.1.

[0033] As a preferred example, the check valve 15 is made of elastic material, such as rubber, and is sleeved on the central tube body. The check valve 15 has a circle of flaps 15.1, which are in contact with the inner end surface of the annular plate body 1.1 to form a seal when no oil is flowing in. At this time, the oil cannot enter the housing 5 after entering through the oil inlet 1.3. When the oil flows under the delivery of the pump, the pressure of the oil can push the flaps 15.1 to separate it from the inner end surface of the annular plate body 1.1 to form a connection, thereby completing the filtration.

[0034] As a preferred example, the filter element includes a skeleton 6, a filter screen 7, a first end cover 4 and a second end cover 10; the first end cover 4 is welded to one end of the skeleton 6, the second end cover 10 is welded to the other end, and the filter screen 7 is installed on the periphery. The skeleton 6 and the filter screen 7 are preferably made of metal materials, which can adapt to the temperature rise environment caused by the operation of the ultrasonic transducer 8, and can also better transmit vibrations. The center hole 4.2 of the first end cover 4 extends upward to form a connecting portion 4.1, and contacts with the inner ring of the check valve 15 to form a seal, and is connected to the outer cylindrical surface of the center tube body to communicate with the oil outlet 1.3. A connecting hole 10.1 is provided on one side of the second end cover 10, which is used to connect the generating end of the ultrasonic transducer 8 through the stud 9.

[0035] As a preferred example, the oil filter further includes a buffer component 13, which is arranged between the second end cover 10 and the housing. The buffer component 13 is a compression spring, which has an annular base and a plurality of spring plates 13.1 arranged on the inner ring of the annular base. The spring plates 13.1 play a role of elastic support for the second end cover 10, thereby playing a role of buffering the entire filter element.

[0036] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0037] It should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified and replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A self-cleaning oil filter, comprising a housing having an oil inlet (1.2) and an oil outlet (1.3), a filter element arranged in the housing (5) and connected to the oil outlet (1.3), and a check valve (15) arranged between the filter element and the oil inlet (1.2), characterized in that: It also comprises an ultrasonic transducer (8), the ultrasonic transducer (8) being installed through the housing and having a generating end connected to the filter element; and an openable sewage outlet (5.1) is provided on the housing.

2. A self-cleaning oil filter according to claim 1, characterized in that: The housing comprises a cover plate (1), a housing (5), an end cover (3), a sealing ring (2) and a threaded plug (12); The end cover (3) is installed at one end of the housing (5), and a sewage outlet (5.1) capable of installing the threaded plug (12) is provided at the other end; a cover plate (1) is installed on the central inner side of the end cover (3), and a sealing ring (2) is installed on the outer side thereof; the cover plate (1) has an oil inlet (1.2) and an oil outlet (1.3).

3. A self-cleaning oil filter according to claim 2, characterized in that: The cover plate (1) comprises a central tube body forming the oil outlet (1.3) and an annular plate body (1.1) connected to the outer periphery of the central tube body, and the oil inlet (1.2) is arranged on the annular plate body (1.1).

4. A self-cleaning oil filter according to claim 3, characterized in that: The check valve (15) has a circle of flaps (15.1), which are in contact with the inner end surface of the annular plate body (1.1) to form a seal when no oil is flowing in, and are separated from the inner end surface of the annular plate body (1.1) to form conduction when oil is flowing in.

5. The self-cleaning oil filter according to claim 1, characterized in that: The filter element comprises a skeleton (6), a filter screen (7), a first end cover (4) and a second end cover (10); the first end cover (4) is mounted on one end of the skeleton (6), the second end cover (10) is mounted on the other end, and the filter screen (7) is mounted on the outer periphery thereof; the first end cover (4) is sealingly connected to the check valve (15) and the center hole (4.2) thereof is in communication with the oil outlet (1.3); and the ultrasonic transducer (8) is connected to the second end cover (10).

6. A self-cleaning oil filter according to claim 5, characterized in that: It also comprises a buffer component (13), wherein the buffer component (13) is arranged between the second end cover (10) and the outer shell.

7. The self-cleaning oil filter according to claim 5, characterized in that: The frame (6) and the filter screen (7) are both metal parts.

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