Liquid medium filtering device
By using ultrasonic transducers in liquid medium filtering devices to generate high-frequency vibrations, combined with infrared imaging or visual recognition methods, the self-cleaning function of the filter is realized, solving the problems of reduced filtration effect and high maintenance costs caused by the accumulation of impurities in traditional filtering devices, and extending the service life of the equipment.
Patent Information
- Application Number
- CN202510084121.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-03-28
AI Technical Summary
During the use of traditional liquid medium filtration devices, the accumulation of impurities on the filter element will lead to reduced filtration effect and equipment damage, and will be costly to maintain, making it difficult to clean in time.
Ultrasonic transducers are used to generate high-frequency vibrations, disengage particulate matter on the filter, and independently judge the amount of dirt through infrared imaging or visual recognition to avoid excessive accumulation of dirt.
The filter is self-cleaning function, extends the service life of the filter, reduces maintenance costs, and ensures the stability of the filtering effect.
Smart Images
Figure CN119701445A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of filtration, and in particular relates to a liquid medium filtration device. Background Art
[0002] With the continuous advancement of automobile technology and increasingly stringent environmental protection requirements, tiny impurities and particles in engine oil will affect the normal operation and service life of mechanical equipment. Traditional liquid medium filter devices need to be replaced as a whole every 5,000-10,000 kilometers for each vehicle, which will generate at least 300g of environmental pollutants. If these particles are attached to the filter element surface in large quantities, the filtering effect will be greatly reduced and the probability of filter damage will be increased.
[0003] Therefore, how to promptly remove the attachments on the filter element not only affects the service life of the filter itself, but also affects the operating status of the vehicle itself. Summary of the invention
[0004] The object of the present invention is to provide a liquid medium filtering device, which can realize automatic monitoring of the amount of dirt accumulated in the filter, thereby facilitating timely cleaning of the dirt, achieving the purpose of reducing maintenance costs and extending service life.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a liquid medium filtering device, comprising a shell, a cover plate, a filter element and a check valve; the cover plate has an oil inlet hole and an oil outlet interface; the cover plate is installed at one end of the shell, and the check valve is arranged on the inner side of the cover plate to control the opening and closing of the oil inlet hole; the liquid medium filtering device also includes an end cover ring plate, an ultrasonic transducer and a thermal imaging module; the ultrasonic transducer is installed through the shell and its generating end is connected to the filter element; the end cover ring plate is arranged on the inner side of one end of the shell and the end is provided with an oil inlet interface and a first mounting hole, and the other end is provided with a sewage outlet; the sewage outlet is installed with a plug; the end cover ring plate has a second mounting hole corresponding to the first mounting hole, and the diameter of the second mounting hole is larger than the diameter of the first mounting hole; the cover plate is installed at the center of the end cover ring plate; a light-transmitting plate is installed in the second mounting hole, and the thermal imaging module is installed on the outer side of the first mounting hole and obtains an infrared image of the internal medium through the light-transmitting plate.
[0006] The present invention also provides another liquid medium filtering device, comprising a shell, a cover plate, a filter element and a check valve; the cover plate has an oil inlet hole and an oil outlet interface; the cover plate is installed at one end of the shell, and the check valve is arranged on the inner side of the cover plate to control the opening and closing of the oil inlet hole; the liquid medium filtering device also includes an end cover ring plate, an ultrasonic transducer, a camera module and a light source module; the ultrasonic transducer is installed through the shell and its generating end is connected to the filter element; the end cover ring plate is arranged on the inner side of one end of the shell and the end is provided with an oil inlet interface and two first mounting holes, and the other end is provided with a sewage outlet; the sewage outlet is installed with a plug; the end cover ring plate has two second mounting holes corresponding to the two first mounting holes respectively, and the diameter of the second mounting hole is larger than the diameter of the first mounting hole; the cover plate is installed at the center of the end cover ring plate; a light-transmitting plate is installed in the second mounting hole, the camera module is installed on the outside of one of the first mounting holes and obtains the image of the internal medium through the light-transmitting plate, and the light source module is installed on the outside of another first mounting hole.
[0007] Further, the housing includes a main shell and an end cover; An opening is arranged at one end of the main shell, and a sewage outlet is arranged at the other end; the end cover has a skirt structure, and the skirt structure is threadedly mounted with the outer wall surface of the opening of the main shell, so that the end cover ring plate is fixed at the opening, and the oil inlet interface and the first mounting hole are arranged on the end cover.
[0008] Furthermore, an annular portion is provided inside the second mounting hole, and a pressing head is installed in the annular portion so as to press the light-transmitting plate into the second mounting hole.
[0009] Furthermore, the cover plate has a central tube body 1.4 forming the oil outlet interface and an annular plate body connected to the outer periphery of the central tube body 1.4, the oil inlet hole is arranged on the annular plate body, and the annular plate body is closely attached to the end cover ring plate.
[0010] 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 the oil is not flowing, and separate from the inner end surface of the annular plate body to form conduction when the oil is flowing.
[0011] Furthermore, the filter element includes a skeleton, a filter screen, a first filter element seat and a second filter element seat; the first filter element seat is installed at one end of the skeleton, the second filter element seat is installed at the other end, and the filter screen is installed on its outer periphery, the first filter element seat is sealingly connected to the check valve and its center hole is connected to the oil outlet interface; the ultrasonic transducer is connected to the second filter element seat.
[0012] Furthermore, it also includes a buffer component, which is arranged between the second filter element seat and the shell.
[0013] Furthermore, the frame and the filter are both metal parts.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 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. At the same time, infrared imaging or visual recognition means are used to realize independent judgment of the amount of dirt, thereby avoiding excessive accumulation of dirt in the filter and ensuring that the filter has a good filtering ability.
[0015] 2. The metal filter and frame 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 vibrations to achieve better decontamination effect.
[0016] 3. The present invention adopts a buffer component to achieve buffering of the filter element, thereby reducing the adverse effects of the filter element under high-frequency vibration and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural stereogram of the first embodiment of the present invention; Figure 2 It is a structural explosion diagram of the first embodiment of the present invention; Figure 3 A top view of the structure of Embodiment 1 of the present invention; Figure 4 for Figure 3 Structural cross-sectional view along the AA axis (the solid arrows in the figure indicate the flow direction of the medium before filtration, and the hollow arrows indicate the flow direction of the medium after filtration); Figure 5 for Figure 4 A partial enlarged view of point I in the middle; Figure 6 for Figure 4 A partial enlarged view of position II in the middle; Figure 7 A top view of the structure of the second embodiment of the present invention Figure 8 for Figure 7 Structural cross-section view along the BB axis. DETAILED DESCRIPTION
[0018] 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.
[0019] Embodiment 1: Figures 1 to 6 As shown, this embodiment provides a liquid medium filtering device, including a housing, a cover plate 1, a filter element, a check valve 15, an end cover ring plate 2, an ultrasonic transducer 8 and a thermal imaging module 11.
[0020] The main shell 5 includes a cylindrical structure 5.2 with an open end, a blocking body 5.3 arranged at the other end of the cylindrical structure 5.2, and a sewage outlet 5.1 arranged in the center of the blocking body 5.3. The cylindrical structure 5.2 and the blocking body 5.3 are integrally processed and connected, and the sewage outlet 5.1 and the blocking body 5.3 can be connected by an integral molding process or by separate welding. The cylindrical structure 5.2 is provided with a mounting through hole 5.3 at one end near the sewage outlet 5.1, which is used to install the ultrasonic transducer 8. The sewage outlet 5.1 is processed with an internal thread to provide installation conditions for the plug 12, so that the plug 12 can block the sewage outlet 5.1 after installation, and can also be removed to make the sewage outlet 5.1 conductive for sewage discharge.
[0021] The outer edge of the end cover 3 has a skirt structure 3.2, and is sealed and installed at the upper end opening of the cylindrical structure 5.2 by riveting or threading, so that the end cover ring plate 2 is fixed at the opening and a medium cavity is formed. The end cover 3 is provided with an oil inlet interface 3.3 and a first mounting hole 3.1, and the oil inlet interface 3.3 is used to connect to the vehicle oil system.
[0022] The edge of the end cover ring plate 2 is provided with a first O-ring 18, so as to form a sealed installation when it is fixed at the open position. The end cover ring plate 2 is provided with a second mounting hole 2.1 corresponding to the first mounting hole 3.1, and the diameter of the second mounting hole 2.1 is larger than the diameter of the first mounting hole 3.1, so that a positioning boss structure is formed at the two mounting holes, so as to install the light-transmitting plate 9. The thermal imaging module 11 is installed on the outside of the first mounting hole 3.1 and obtains the infrared image of the internal medium through the light-transmitting plate 9. The thermal imaging module 11 is electrically connected to the vehicle-mounted system. In this example, the model of the thermal imaging module 11 is MLX90640BAA, and the field of view angle is 110*75°, which is suitable for close-range measurement. The module adopts an I2C control interface and can be connected to the R-aspperrys Pi / A-rduinos (ESP32) / STM32 main control board.
[0023] The cover plate 1 has an oil inlet hole 1.2 and an oil outlet interface 1.3. The oil inlet hole 1.2 is connected to the oil inlet interface 3.3, and the oil outlet interface 1.3 is connected to the oil inlet of the engine. As a preferred example, the cover plate 1 has a central tube body 1.4 forming the oil outlet interface 1.3 and an annular plate body 1.1 connected to the outer periphery of the central tube body 1.4. The central tube body 1.4 and the annular plate body 1.1 are formed by integral processing. There are multiple oil inlet holes 1.2, and they are evenly distributed on the annular plate body 1.1 along the circumferential direction. The inner ring diameter of the end cover ring plate 2 is not less than the inner diameter of the oil inlet interface 3.3. The annular plate body 1.1 is tightly attached to the end cover ring plate 2 and forms a boss structure. A sealing ring 16 is provided at the boss structure, so as to form a sealed installation when connecting the oil system.
[0024] The check valve 15 is arranged on the inner side of the cover plate 1 to control the opening and closing of the oil inlet hole 1.2.
[0025] As a preferred example, the check valve 15 is made of elastic material, such as rubber. The check valve 15 is sleeved on the central tube body 1.4 and has a circle of flaps 15.1. The flaps 15.1 are in contact with the inner end surface of the annular plate body 1.1 to form a seal when the oil is not flowing in. At this time, the oil cannot enter the housing 5 through the oil inlet hole 1.3. When the medium 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.
[0026] As a preferred example, an annular portion 2.2 is provided inside the second mounting hole 2.1, and a pressure head 14 is installed in the annular portion 2.2 to press the light-transmitting plate 9 into the second mounting hole 2.1. A second O-ring 17 is provided between the pressure head 14 and the light-transmitting plate 9 to form a seal. The pressure head 14 is installed in the annular portion 2.2 by threading to form a fixed installation.
[0027] The ultrasonic transducer 8 penetrates the mounting through hole 5.3 on the cylindrical structure 5.2 and is mounted on the cylindrical structure 5.2. The ultrasonic transducer 8 is externally connected to an ultrasonic generator to convert the mains power 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.
[0028] The filter element is installed in the housing, which includes a skeleton 6, a filter screen 7, a first filter element seat 4 and a second filter element seat 10. The first filter element seat 4 is seal-welded at one end of the skeleton 6, the second filter element seat 10 is seal-welded at 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 filter element seat 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 1.4 to communicate with the oil outlet interface 1.3. A connecting hole 10.1 is provided on one side of the second filter element seat 10, which is used to connect the generating end of the ultrasonic transducer 8 through a stud.
[0029] As a preferred example, the outer circumferential surface of the connecting portion 4.1 of the first filter element seat 4 is a conical surface, and the check valve 15 has a circle of sealing portion 15.2 protruding from the outer end surface, and the outer end surface of the sealing portion 15.2 forms a sealing contact with the inner side surface of the annular plate body 1.1, and its inner circumferential surface forms a sealing contact with the outer circumferential surface of the central tube body, and its inner end surface forms a sealing contact with the outer end surface of the connecting portion 4.1. The inner ring of the check valve 15 is also a conical surface, so as to form a sealing contact with the outer circumferential surface of the connecting portion 4.1. The outer end surface of the first filter element seat 4 is provided with a third O-ring, so as to form a sealing contact with the inner end surface of the check valve 15. The purpose of such a setting is not only to achieve sealing in the oil inlet and outlet structure, but also to slow down the transmission of vibration.
[0030] As a preferred example, the liquid medium filtering device further comprises a buffer component 13, which is arranged between the second filter element seat 10 and the housing. The buffer component 13 is a compression spring, which has an annular base and a plurality of spring pieces 13.1 arranged on the inner ring of the annular base, and the spring pieces 13.1 play a role of elastic support for the second filter element seat 10, thereby playing a role of buffering the entire filter element.
[0031] When the vehicle is started, during the process of the oil being pumped to the filter device, when the oil inlet pressure exceeds the flap 15.1 of the check valve 15, the oil will break the flap 15.1 and enter the inside of the filter device through the oil inlet hole 1.2. When the oil passes through the filter element, the impurities are blocked outside the filter element, and the filtered oil enters the engine through the oil outlet interface 1.3. As the vehicle runs for an increasing amount of time, more and more impurity particles will adhere to the outer wall of the filter 7, thereby weakening the filtering capacity of the filter 7. When the vehicle is in a stopped state, the ultrasonic transducer 8 is started according to a certain set cycle, so that it generates high-frequency vibration to shake the impurities on the outer wall of the filter 7 away from the filter 7 and suspend them in the oil. Since the ultrasonic transducer 8 generates heat when it is running, the oil and impurities heat up, and since the temperature rise of the two is different, the infrared image obtained by the thermal imaging module 11 at this time presents an uneven situation. That is to say, the impurities appear as spots of different colors from the medium on the infrared image. If there are more impurities, the spots increase or even form color blocks. In this case, it is considered that there are more impurities and it is necessary to stop the machine for cleaning. Finally, unscrew the plug 2.1 to discharge the oil and impurities at the same time to clean the impurities in time. After cleaning, reinstall the plug 2.1.
[0032] Embodiment 2: Figure 7 and Figure 8 As shown, the difference from the first embodiment is that, in this embodiment, an end cover ring plate 2 is arranged on the inner side of one end of the housing and the end is provided with an oil inlet interface 3.3 and two first mounting holes 3.1, and the end cover ring plate 2 has two second mounting holes 2.1 corresponding to the two first mounting holes 3.1 respectively. A light-transmitting plate 9 is installed in the second mounting hole 2.1, the camera module 20 is installed on the outside of one of the first mounting holes 3.1 and obtains the image of the internal medium through the light-transmitting plate 9, and the light source module 21 is installed on the outside of the other first mounting hole 3.1. The light source module 21 and the camera module 20 are both electrically connected to the vehicle-mounted system. The model of the camera module 20 is the ov7670 module, which is small in size, low in operating voltage and can be connected to the STM32 main control board. The light source module 21 is an LED lamp bead module.
[0033] The difference from the first embodiment is that the present embodiment does not need to be stopped when in use. It only needs to turn on the light source to illuminate the internal oil, and then directly obtain the image at this time through the camera module 20, and then the vehicle system determines whether it needs to be cleaned according to the amount of impurities in the image.
[0034] It should be noted that the means of identifying images to determine the impurity content in the present invention can be completed using existing technologies, and the specific processing process and principles will not be repeated.
[0035] The matters not described in detail in the present invention are all known technologies to those skilled in the art.
[0036] 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 liquid medium filtering device, comprising a housing, a cover plate (1), a filter element and a check valve (15); the cover plate (1) has an oil inlet hole (1.2) and an oil outlet interface (1.3); the cover plate (1) is mounted on one end of the housing, and the check valve (15) is arranged on the inner side of the cover plate (1) to control the opening and closing of the oil inlet hole (1.2); the characteristics are: It also comprises an end cover ring plate (2), an ultrasonic transducer (8) and a thermal imaging module (11); the ultrasonic transducer (8) is installed through the housing and its generating end is connected to the filter element; the end cover ring plate (2) is arranged on the inner side of one end of the housing and is provided with an oil inlet interface (3.3) and a first mounting hole (3.1), and the other end is provided with a sewage outlet (5.1); the sewage outlet (5.1) is installed with a plug (12); the end cover ring plate (2) has a second mounting hole (2.1) corresponding to the first mounting hole (3.1), and the diameter of the second mounting hole (2.1) is larger than the diameter of the first mounting hole (3.1); the cover plate (1) is installed at the center of the end cover ring plate (2); a light-transmitting plate (9) is installed in the second mounting hole (2.1), and the thermal imaging module (11) is installed on the outside of the first mounting hole (3.1) and obtains an infrared image of the internal medium through the light-transmitting plate (9).
2. A liquid medium filtering device, comprising a housing, a cover plate (1), a filter element and a check valve (15); the cover plate (1) has an oil inlet hole (1.2) and an oil outlet interface (1.3); the cover plate (1) is mounted on one end of the housing, and the check valve (15) is arranged on the inner side of the cover plate (1) to control the opening and closing of the oil inlet hole (1.2); the characteristics are: It also includes an end cover ring plate (2), an ultrasonic transducer (8), a camera module (20) and a light source module (21); the ultrasonic transducer (8) is installed through the housing and its generating end is connected to the filter element; the end cover ring plate (2) is arranged on the inner side of one end of the housing and is provided with an oil inlet interface (3.3) and two first mounting holes (3.1), and the other end is provided with a sewage outlet (5.1); the sewage outlet (5.1) is installed with a plug (12); the end cover ring plate (2) has two corresponding first mounting holes ( The cover plate (1) is mounted at the center of the end cover ring plate (2); a light-transmitting plate (9) is mounted in the second mounting holes (2.1); the camera module (20) is mounted on the outside of one of the first mounting holes (3.1) and acquires an image of an internal medium through the light-transmitting plate (9); and the light source module (21) is mounted on the outside of another of the first mounting holes (3.1).
3. A liquid medium filtering device according to claim 1 or 2, characterized in that: The housing comprises a main housing (5) and an end cover (3); An opening is arranged at one end of the main housing (5), and a sewage outlet (5.1) is arranged at the other end; the end cover (3) has a skirt structure (3.2), the skirt structure (3.2) and the outer wall surface of the opening of the main housing (5) are threadedly mounted, so that the end cover ring plate (2) is fixed at the opening; the oil inlet interface (3.3) and the first mounting hole (3.1) are arranged on the end cover (3).
4. A liquid medium filtering device according to claim 1 or 2, characterized in that: An annular portion (2.2) is provided on the inner side of the second mounting hole (2.1), and a pressing head (14) is installed in the annular portion (2.2) so as to press the light-transmitting plate (9) into the second mounting hole (2.1).
5. A liquid medium filtering device according to claim 1 or 2, characterized in that: The cover plate (1) comprises a central tube body 1.4 forming the oil outlet interface (1.3) and an annular plate body (1.1) connected to the outer periphery of the central tube body 1.4, the oil inlet hole (1.2) being arranged on the annular plate body (1.1), and the annular plate body (1.1) being closely attached to the end cover ring plate (2).
6. A liquid medium filtering device according to claim 5, 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 in a non-oil-injected state, and are separated from the inner end surface of the annular plate body (1.1) to form conduction in an oil-injected state.
7. A liquid medium filtering device according to claim 1 or 2, characterized in that: The filter element comprises a skeleton (6), a filter screen (7), a first filter element seat (4) and a second filter element seat (10); the first filter element seat (4) is mounted on one end of the skeleton (6), the second filter element seat (10) is mounted on the other end, and the filter screen (7) is mounted on the outer periphery thereof; the first filter element seat (4) is sealedly connected to the check valve (15) and the center hole (4.2) thereof is connected to the oil outlet interface (1.3); and the ultrasonic transducer (8) is connected to the second filter element seat (10).
8. A liquid medium filtering device according to claim 7, characterized in that: It also comprises a buffer component (13), wherein the buffer component (13) is arranged between the second filter element seat (10) and the housing.
9. A liquid medium filtering device according to claim 7, characterized in that: The frame (6) and the filter screen (7) are both metal parts.