A lubricating oil impurity filtering and detecting device

Abstract

The utility model discloses a lubricating oil impurity filters detection device, including the casing, the casing inside is divided into mixing chamber and detection chamber, the casing is fixed with the thin tube one end close to mixing chamber, and the thin tube other end is fixed with the horn pipe, the horn pipe other end is fixed with the oil inlet pipe, the casing is fixed with the oil outlet pipe one side close to detection chamber, the thin tube and mixing chamber inside jointly are provided with the turbulence component, the detection chamber bottom is fixed with integrated sensor, the casing top and located detection chamber top fixed top shell, set up turbulence component and integrated sensor in the utility model, through the turbulence component to the lubricating oil stirring of entering mixing chamber, makes the particle in the oil even suspended before detection, avoided because the particle settlement or uneven distribution leads to the reading random fluctuation, ensures that the detection result stable and reliable reflection whole batch oil real -time cleanliness.

Description

Technical Field

[0001] This utility model relates to the field of lubricating oil testing technology, and in particular to a lubricating oil impurity filtration and testing device. Background Technology

[0002] A lubricating oil impurity filtration and detection device is mainly used in the field of online oil monitoring for various mechanical equipment, vehicle engines, and hydraulic systems. Its core function is to perform real-time and accurate quality assessment of the lubricating oil after it has been purified by the filter. Key indicators detected include solid particle contamination level, moisture content, and oil oxidation degree, thereby determining the wear condition of the equipment, filter element performance, and oil deterioration. This is an important technical means to achieve predictive maintenance and ensure the safe and reliable operation of equipment.

[0003] Currently, online monitoring of filtered lubricating oil primarily relies on a single online sensor. A common practice is to install a laser or light-shielding particle counter downstream of the main oil line filter, assessing cleanliness by monitoring the number and size of particles in the oil flowing through its narrow channels. Some high-end systems additionally incorporate a separate capacitive moisture sensor in series. These sensors are typically connected directly in series in the main line or a simple bypass, providing continuous electronic readings.

[0004] However, existing online detection devices have the following drawbacks: First, the detection results are easily affected by the oil flow pattern, leading to inaccurate readings. Since sensors are typically installed in laminar or unstable flow sections of the pipe, solid particles in the oil may be in a non-uniform suspension state due to gravity settling or uneven flow velocity distribution. This means that the sensor probe only detects a local, instantaneous particle concentration, failing to accurately and stably represent the average contamination level of the entire batch of filtered oil, resulting in large data fluctuations and low reliability. Second, their functionality is limited, failing to provide a comprehensive diagnosis of the oil's health status. Particle counters can only provide information on solid particles and are powerless against equally harmful water contamination and oxidation / acid value changes that characterize oil chemical degradation. Therefore, further improvements are needed. To this end, we propose a lubricating oil impurity filtration detection device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lubricating oil impurity filtration and detection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lubricating oil impurity filtration and detection device, comprising a housing, the interior of which is divided into a mixing chamber and a detection chamber, a thin tube fixed to one end of the housing near the mixing chamber, and a horn tube fixed to the other end of the thin tube, an oil inlet pipe fixed to the other end of the horn tube, an oil outlet pipe fixed to one side of the housing near the detection chamber, a turbulence assembly jointly arranged inside the thin tube and the mixing chamber, an integrated sensor fixed to the bottom of the detection chamber, a top shell fixed to the top of the housing above the detection chamber, a camera and a control motherboard fixedly installed inside the top shell, and a first transparent window fixed to the top wall of the housing below the camera.

[0007] Furthermore, the housing is fixed to the middle of the main filter pipeline via an oil inlet pipe and an oil outlet pipe.

[0008] Furthermore, the turbulence assembly includes multiple support rods fixed to the inner wall of the thin tube, with a bushing fixed to the other end of each support rod. A horizontal shaft is rotatably connected inside the bushing via a bearing. A fan blade is fixed to one end of the horizontal shaft inside the thin tube, and several stirring rods are fixed to the surface of the other end of the horizontal shaft inside the mixing chamber.

[0009] Furthermore, the integrated sensor includes a high-frequency capacitive moisture sensing membrane, a metal oxide film dielectric constant sensing unit, and a laser scattering particle counter, and the integrated sensor is electrically connected to the control motherboard.

[0010] Furthermore, a pad is fixed to the bottom wall of the detection cavity and directly below the camera, and the camera is electrically connected to the control motherboard.

[0011] Furthermore, a second transparent window is fixed to the side of the detection cavity, and a supplementary light is fixed to the outside of the housing and located at the second transparent window. The supplementary light is electrically connected to the control motherboard.

[0012] Furthermore, a communication module and a computer terminal are provided in conjunction with the control motherboard, and the control motherboard is wirelessly connected to the computer terminal through the communication module.

[0013] The beneficial effects of this utility model are: 1. When in use, this utility model is equipped with a turbulence component and an integrated sensor. The turbulence component stirs the lubricating oil entering the mixing chamber, so that the particles in the oil are uniformly suspended before detection. This avoids random fluctuations in readings caused by particle settling or uneven distribution, and ensures that the detection results stably and reliably reflect the real-time cleanliness of the entire batch of oil.

[0014] 2. When in use, this utility model is equipped with an integrated sensor, which includes a high-frequency capacitive moisture sensing membrane (for measuring trace amounts of water), a metal oxide film dielectric constant sensing unit (for indirectly reflecting the degree of oil oxidation), and a laser scattering particle counter; a single probe can simultaneously and at the same point in situ measure the number of particles, moisture content, and oil dielectric constant. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is an overall sectional view of the present invention; Figure 3 This is a perspective view of the turbulence component of this utility model; Figure 4 This is a structural block diagram of the present invention.

[0017] The attached figures are labeled as follows: 1. Housing; 101. Mixing chamber; 102. Detection chamber; 2. Oil inlet pipe; 3. Horn pipe; 4. Thin pipe; 5. Turbulence assembly; 51. Support rod; 52. Bushing; 53. Horizontal shaft; 54. Fan blade; 55. Stirring rod; 6. Oil outlet pipe; 7. Integrated sensor; 8. First transparent window; 9. Top shell; 10. Camera; 11. Pad plate; 12. Second transparent window; 13. Fill light; 14. Control main board. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1-4As shown, a lubricating oil impurity filtration and detection device is disclosed, comprising a housing 1, the interior of which is divided into a mixing chamber 101 and a detection chamber 102. A thin tube 4 is fixed to one end of the housing 1 near the mixing chamber 101, and a horn tube 3 is fixed to the other end of the thin tube 4. An oil inlet pipe 2 is fixed to the other end of the horn tube 3. An oil outlet pipe 6 is fixed to the side of the housing 1 near the detection chamber 102. A turbulence assembly 5 is jointly arranged inside the thin tube 4 and the mixing chamber 101. An integrated sensor 7 is fixed to the bottom of the detection chamber 102. A top shell 9 is fixed to the top of the housing 1 and above the detection chamber 102. A camera 10 and a control main board 14 are fixedly installed inside the top shell 9. A first transparent window 8 is fixed to the top wall of the housing 1 and below the camera 10.

[0020] The housing 1 is fixed to the middle of the filter main pipeline via the oil inlet pipe 2 and the oil outlet pipe 6.

[0021] The turbulence assembly 5 includes multiple support rods 51 fixed to the inner wall of the thin tube 4. The other end of the multiple support rods 51 is fixed to a bushing 52. A horizontal shaft 53 is rotatably connected inside the bushing 52 via a bearing. A fan blade 54 is fixed to one end of the horizontal shaft 53 inside the thin tube 4. Several stirring rods 55 are fixed to the surface of the end of the horizontal shaft 53 inside the mixing chamber 101.

[0022] The lubricating oil of the filtration system enters the horn tube 3 through the oil inlet pipe 2. When it enters the thin tube 4 through the horn tube 3, the flow rate of the lubricating oil increases, which drives the fan blade 54 to rotate, thereby driving the horizontal shaft 53 to rotate. The horizontal shaft 53 stirs the lubricating oil inside the mixing chamber 101. If there are suspended matter, it ensures that the suspended matter will not settle, which is beneficial for subsequent testing.

[0023] The integrated sensor 7 includes a high-frequency capacitive moisture sensing diaphragm, a metal oxide film dielectric constant sensing unit, and a laser scattering particle counter. The integrated sensor 7 is electrically connected to the control motherboard 14. All sensing units share the same oil contact surface but are completely electrically isolated.

[0024] A single integrated sensor 7 can simultaneously and in-situ measure particle count, moisture content, and oil dielectric constant (as a substitute indicator for acid value / oxidation) at the same point. When the system simultaneously shows an increase in particle count, excessive moisture, and a sharp increase in dielectric constant, it can be clearly diagnosed as "severe oil deterioration leading to corrosive wear." This provides a broader range of diagnostic information and more reliable conclusions than a single particle count, and can directly guide whether to "strengthen filtration" or "change the oil immediately."

[0025] A pad 11 is fixed on the bottom wall of the detection chamber 102 and directly below the camera 10. The camera 10 is electrically connected to the control motherboard 14.

[0026] The pad 11 is made of a light-colored material. When the camera 10 takes pictures of the lubricating oil illumination, the pad 11 can act as a back plate to improve the clarity of the pictures.

[0027] A second transparent window 12 is fixed to the side of the detection cavity 102. A supplementary light 13 is fixed to the outside of the housing 1 at the location of the second transparent window 12. The supplementary light 13 is electrically connected to the control main board 14.

[0028] The control motherboard 14 uses existing technology, including a CPU, memory and controller. When the camera 10 takes a picture, the control motherboard 14 controls the fill light 13 to turn on, so as to achieve the effect of fill light and further improve the clarity of the picture.

[0029] The control motherboard 14 is equipped with a communication module and a computer terminal, and the control motherboard 14 is wirelessly connected to the computer terminal through the communication module.

[0030] The results detected by the integrated sensor 7 and the illumination captured by the camera 10 are processed by the control motherboard 14 and then transmitted to the computer terminal through the communication module, which is a 5G module.

[0031] Working Principle: First, the device is connected in series to the main lubricating oil pipeline of the filtration system via the inlet pipe 2 and the outlet pipe 6, ensuring that all filtered lubricating oil flows through this device. When the system is running, the lubricating oil flows in through the inlet pipe 2 and is accelerated into the thin pipe 4 by the contraction of the bell pipe 3. The high-speed flowing oil drives the fan blades 54 of the turbulence component 5 to rotate, and the fan blades 54 drive several stirring rods 55 located inside the mixing chamber 101 to rotate synchronously via the horizontal shaft 53. The stirring rods 55 continuously and thoroughly mechanically stir the lubricating oil flowing into the mixing chamber 101, forcibly breaking the original laminar flow state in the oil, so that solid contaminant particles that may settle or be unevenly distributed are uniformly suspended, forming a homogeneous oil sample. Subsequently, this homogeneous oil sample enters the detection chamber 102.

[0032] In the detection chamber 102, the homogeneous oil sample undergoes two types of detection simultaneously. The first type is contact electrochemical and optical detection: the integrated sensor 7 is completely immersed in the oil sample, and its internal high-frequency capacitive moisture sensing diaphragm measures the trace moisture content in real time. The metal oxide film dielectric constant sensing unit simultaneously monitors the dielectric constant of the reacting oil oxidation and acid value changes, while the built-in laser scattering particle counter performs real-time particle counting and size analysis on the oil flowing through its detection window. All electrical signals are synchronously acquired and processed by the control motherboard 14.

[0033] The second type is optical visualization-assisted detection: To obtain intuitive evidence, the control motherboard 14 can periodically start the detection program. First, it controls the supplementary light 13 to light up, and the light shines through the second transparent window 12 to illuminate the detection chamber 102. Subsequently, the control motherboard 14 drives the top camera 10 to work. The camera 10 takes high-definition pictures of the oil area inside the detection chamber 102 below and above the pad 11 through the first transparent window 8. The light-colored pad 11 serves as a background, and combined with the illumination of the supplementary light 13, it ensures that the camera 10 can clearly capture images of larger particles or abnormal aggregates suspended in the oil.

[0034] Finally, the multi-dimensional quantitative data (particles, moisture, dielectric constant) collected by the integrated sensor 7 and the visual image information captured by the camera 10 are fused and preliminarily analyzed on the control motherboard 14. The processed comprehensive diagnostic data is wirelessly transmitted to a remote computer terminal via a built-in communication module (such as a 5G module). Operators can simultaneously view precise numerical reports and intuitive oil images on the terminal, achieving a comprehensive, reliable, and real-time assessment of the cleanliness, water content, oxidation level, and contaminant morphology of the filtered lubricating oil, thereby accurately determining filter element efficiency, oil condition, and equipment wear trends.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lubricating oil impurity filtration and detection device, characterized in that: The device includes a housing (1), which is divided into a mixing chamber (101) and a detection chamber (102). A thin tube (4) is fixed to one end of the housing (1) near the mixing chamber (101), and a horn tube (3) is fixed to the other end of the thin tube (4). An oil inlet pipe (2) is fixed to the other end of the horn tube (3). An oil outlet pipe (6) is fixed to one side of the housing (1) near the detection chamber (102). A turbulence assembly (5) is provided in both the thin tube (4) and the mixing chamber (101). An integrated sensor (7) is fixed to the bottom of the detection chamber (102). A top shell (9) is fixed to the top of the housing (1) above the detection chamber (102). A camera (10) and a control motherboard (14) are fixedly installed inside the top shell (9). A first transparent window (8) is fixed to the top wall of the housing (1) below the camera (10).

2. The lubricating oil impurity filtration and detection device according to claim 1, characterized in that: The housing (1) is fixed to the middle of the filter main pipeline via the oil inlet pipe (2) and the oil outlet pipe (6).

3. The lubricating oil impurity filtration and detection device according to claim 1, characterized in that: The turbulence assembly (5) includes multiple support rods (51) fixed to the inner wall of the thin tube (4), and a bushing (52) fixed to the other end of the multiple support rods (51). A horizontal shaft (53) is rotatably connected inside the bushing (52) via a bearing. A fan blade (54) is fixed to one end of the horizontal shaft (53) inside the thin tube (4), and several stirring rods (55) are fixed to the surface of the horizontal shaft (53) inside the mixing chamber (101).

4. The lubricating oil impurity filtration and detection device according to claim 1, characterized in that: The integrated sensor (7) includes a high-frequency capacitive moisture sensing membrane, a metal oxide film dielectric constant sensing unit, and a laser scattering particle counter. The integrated sensor (7) is electrically connected to the control motherboard (14).

5. The lubricating oil impurity filtration and detection device according to claim 1, characterized in that: A pad (11) is fixed on the bottom wall of the detection cavity (102) and directly below the camera (10). The camera (10) is electrically connected to the control motherboard (14).

6. The lubricating oil impurity filtration and detection device according to claim 1, characterized in that: A second transparent window (12) is fixed on the side of the detection cavity (102), and a supplementary light (13) is fixed on the outside of the housing (1) and at the second transparent window (12). The supplementary light (13) is electrically connected to the control motherboard (14).

7. The lubricating oil impurity filtration and detection device according to claim 1, characterized in that: The control motherboard (14) is equipped with a communication module and a computer terminal, and the control motherboard (14) is wirelessly connected to the computer terminal through the communication module.

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