Oil abrasive particle separation device and oil abrasive particle detection equipment

Abstract

The invention discloses an oil abrasive particle separation device and oil abrasive particle detection equipment, and belongs to the technical field of abrasive particle detection.The oil abrasive particle separation device is characterized in that at least one of a first shell and a second shell is provided with a flow channel groove, the first shell and the second shell are detachably and fixedly connected to define a flow channel, and the flow channel is provided with an inlet and an outlet which communicate with each other; the second shell is provided with a plurality of retention grooves, each retention groove is communicated with the flow channel, and at least two of the retention grooves are different in size so as to respectively retain abrasive particles with different sizes in the oil liquid; the magnet is arranged on the side, away from the second shell, of the first shell, and the second shell is arranged below the first shell. The oil abrasive particle separation device can synchronously separate abrasive particles with different sizes in non-ferromagnetic abrasive particles in the process of separating the ferromagnetic abrasive particles from the non-ferromagnetic abrasive particles, so that the problem that related equipment cannot distinguish the ferromagnetic abrasive particles from the non-ferromagnetic abrasive particles can be solved; and the position of abnormal wear in equipment such as a system cannot be accurately obtained.

Description

Technical Field

[0001] This application belongs to the field of abrasive detection technology, specifically relating to an oil abrasive separation device and an oil abrasive detection equipment. Background Technology

[0002] When hydraulic systems in mechanical equipment malfunction, it is generally due to contamination of the hydraulic oil. The main sources of contaminants in hydraulic oil are residual and generated contaminants within the hydraulic system, as well as externally introduced contaminants, primarily consisting of solid particles.

[0003] By detecting solid particles in hydraulic fluid, the operating status of a hydraulic system can be assessed, and the nature of the contaminants can be used to diagnose abnormal components and parts within the hydraulic system. Relevant testing equipment typically uses filtration to remove solid particles from the hydraulic fluid and measures the amount of these particles to determine the operating status of the hydraulic system.

[0004] However, because the types and properties of solid particles in hydraulic fluid are not uniform—for example, ferromagnetic metal particles typically originate from ferromagnetic materials, while non-ferromagnetic metal particles typically originate from non-ferromagnetic materials—the differentiation of metal particles with different properties is not effective in relevant detection equipment, making it impossible to accurately pinpoint the location of abnormal wear in the hydraulic system. Summary of the Invention

[0005] The purpose of this application is to provide an oil abrasive separation device and an oil abrasive detection device. The oil abrasive separation device can accurately separate ferromagnetic abrasive particles and non-ferromagnetic abrasive particles, and simultaneously separate abrasive particles of different sizes in non-ferromagnetic abrasive particles, thereby accurately obtaining the location of abnormal wear in equipment such as hydraulic systems.

[0006] In a first aspect, embodiments of this application disclose an oil abrasive separation device, which includes a first housing, a second housing, and a magnet, wherein... At least one of the first housing and the second housing is provided with a flow channel groove, and the first housing and the second housing are detachably fixedly connected to form a flow channel, wherein the flow channel is provided with an inlet and an outlet that communicate with each other; The second housing is provided with a plurality of retention grooves, each of which is connected to the flow channel, and at least two of the plurality of retention grooves are of different sizes, so as to retain abrasive particles of different sizes in the oil respectively. The magnet is disposed on the side of the first housing opposite to the second housing, and the second housing is disposed below the first housing.

[0007] Secondly, embodiments of this application disclose an oil abrasive particle detection device, which includes a concentration detection device and the aforementioned oil abrasive particle separation device.

[0008] This application discloses an oil abrasive separation device, wherein at least one of the first shell and the second shell is provided with a fluid groove, and the two are fixedly connected to form a flow channel. The flow channel is provided with an inlet and an outlet that are interconnected, so that oil can be transported into the flow channel through the inlet and flow continuously along the flow channel, and finally flow out from the outlet to the outside of the oil abrasive separation device.

[0009] Meanwhile, in the oil abrasive separation device disclosed in this application embodiment, a magnet is disposed on the side of the first housing away from the second housing, and the second housing is disposed below the first housing. Therefore, during the flow of oil in the flow channel, the first abrasive particles with ferromagnetism carried by the oil can be attracted by the magnet, thereby allowing the first abrasive particles to be adsorbed on the surface of the first housing facing the second housing in the flow channel, i.e., the top of the flow channel. Furthermore, since the second housing is located below the first housing, the second abrasive particles in the oil that cannot be adsorbed by the magnet and do not have ferromagnetism can settle under their own weight and eventually settle on the surface of the second housing facing the first housing, i.e., the bottom of the flow channel. This allows the oil abrasive separation device to separate the first abrasive particles with ferromagnetism and the second abrasive particles without ferromagnetism carried by the oil separately. Thus, by detecting parameters such as the amount of the first and second abrasive particles separately, the location of abnormal wear in the hydraulic system can be obtained more accurately.

[0010] Specifically, in this embodiment, the second housing is further provided with multiple retention grooves, which can improve the separation effect of the second abrasive particles, prevent the second abrasive particles that have completed the settling process from being re-carried up by the oil flow, and at least two of the multiple retention grooves are of different sizes, so that the multiple retention grooves can respectively retain abrasive particles of different sizes in the oil, thereby further improving the classification of abrasive particles, and providing a reliable basis for operators to determine the operating status of the equipment based on parameters such as the properties, size, and quantity of abrasive particles. As described above, the separation process between the different sized parts of the second abrasive particles is carried out simultaneously with the separation process of the first and second abrasive particles, thereby greatly reducing the difficulty of separating and classifying oil abrasive particles and greatly improving the ease of use of the separation device.

[0011] In addition, in order to ensure that the first abrasive grain and the second abrasive grain have the ability to be detected separately, in the oil abrasive grain separation device disclosed in this application embodiment, the fixed connection between the first housing and the second housing is a detachable connection. Thus, when it is necessary to separate the abrasive grains carried by the oil, the first housing and the second housing can be fixedly connected as one unit to form a flow channel; while when it is necessary to detect the first abrasive grain and the second abrasive grain separately, the fixedly connected first housing and the second housing can be separated from each other. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of the oil abrasive separation device disclosed in the embodiments of this application; Figure 2 This is a schematic diagram showing the distribution of retention grooves in the oil abrasive separation device disclosed in the embodiments of this application; Figure 3 This is a schematic diagram showing the distribution of magnets in the oil abrasive separation device disclosed in the embodiments of this application; Figure 4 This is a schematic diagram of the optical concentration detection device in the oil abrasive detection equipment disclosed in the embodiments of this application; Figure 5 This is a schematic diagram of the inductive concentration detection device in the oil abrasive testing equipment disclosed in this application.

[0013] Figure label: 1-Inlet, 2-Outlet, 3-First housing, 4-Second housing, 5-Magnet, 6-Flow channel, 7-First retention area, 8-Second retention area, 9-Third retention area, 10-Fourth retention area, 11-Fifth retention area, 12-Sixth retention area, 13-First magnet, 14-Second magnet, 15-Third magnet, 16-Fourth magnet, 17-Fifth magnet, 18-Photoelectric sensor, 19-Light emitter, 20-Moving platform, 21-Support platform, 22-Array-type inductance detection module. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0015] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0016] like Figures 1-5 As shown in the illustration, this application discloses an oil abrasive particle separation device and an oil abrasive particle detection device. The oil abrasive particle separation device disclosed in this application can be applied to an oil abrasive particle detection device. More specifically, the oil abrasive particle separation device disclosed in this application can separate abrasive particles carried in the oil to obtain abrasive particles used to determine parameters such as the operating status and wear location of equipment such as hydraulic systems. Of course, if the oil is obtained from other equipment, the abrasive particles in the oil can be used to determine the operating status and wear of the corresponding equipment. Therefore, the oil abrasive particle separation device and oil abrasive particle detection device disclosed in this application are not only applicable to scenarios involving the detection of oil conditions in hydraulic systems.

[0017] Furthermore, the oil abrasive separation device disclosed in this application can further distinguish solid particles (i.e. abrasive particles) in the oil based on whether they possess ferromagnetism, in order to obtain a first abrasive particle and a second abrasive particle that are separated from each other. The first abrasive particle is ferromagnetic, while the second abrasive particle is not ferromagnetic. That is, the first abrasive particle can be magnetically attracted to a magnet, while the second abrasive particle cannot be attracted to a magnet.

[0018] In order to achieve the above objectives, the inventors of this application have proposed the following technical solution after creative work.

[0019] like Figure 1 As shown, the oil abrasive separation device disclosed in this application includes a first housing 3, a second housing 4, and a magnet 5.

[0020] In order to ensure that the oil can enter the oil-abrasive separator and flow within it, so that the abrasive particles can be separated from the oil by the oil-abrasive separator, the oil-abrasive separator disclosed in the embodiments of this application, such as... Figure 2 As shown, at least one of the first housing 3 and the second housing 4 is provided with a flow channel groove.

[0021] Specifically, both the first housing 3 and the second housing 4 can be plate-shaped or block-shaped structural components. By forming a recessed flow channel groove on the surface of at least one of the first housing 3 and the second housing 4, the oil can flow along the flow channel groove, so that the oil abrasive separation device can separate the abrasive particles from the oil during the oil flow process.

[0022] To ensure stable oil flow within the flow channel 6, and to ensure that the oil-abrasive separation device separates the abrasive particles from the oil while simultaneously separating the first and second abrasive particles from each other, based on the above structure, in the oil-abrasive separation device disclosed in the embodiments of this application, as follows: Figure 1 As shown, the first housing 3 and the second housing 4 are detachably fixedly connected to form a flow channel 6, which makes any cross-section of the flow channel 6 a complete surrounding surface, thereby making the sidewall of the flow channel 6 a closed structure to prevent oil from splashing when flowing in the flow channel 6.

[0023] Of course, in order to ensure that the oil can be delivered into the flow channel 6 and discharged from the flow channel 6, during the design of the flow channel 6, such as Figure 1 As shown, the flow channel 6 has an inlet 1 and an outlet 2 that are interconnected. During the use of the oil abrasive separation device, the oil can be transported from the inlet 1 into the flow channel 6. As the oil continues to flow in the flow channel 6, the oil can eventually flow out from the outlet 2 and out of the oil abrasive separation device. During the flow of the oil in the flow channel 6, the oil abrasive separation device can separate the first abrasive particles and the second abrasive particles carried in the oil.

[0024] Meanwhile, in order to reduce the difficulty of separating the first and second abrasive grains and save costs, such as Figure 1 As shown, in this application, a magnet 5 is used to separate the first abrasive grain, which has ferromagnetism, from the oil, and gravity and the resistance generated by the first abrasive grain are used to separate the second abrasive grain from the oil.

[0025] Therefore, in the embodiments of this application, such as Figure 1 As shown, the magnet 5 is disposed on the side of the first housing 3 away from the second housing 4, and the second housing 4 is disposed below the first housing 3.

[0026] Under the influence of the magnetic field generated by the magnet 5, the first abrasive grains with ferromagnetism in the abrasive grains carried by the oil can be attracted, thereby adsorbing the first abrasive grains onto the surface of the first housing 3 facing the second housing 4. As shown above, the second housing 4 is located below the first housing 3, and the magnet 5 is located on the side of the first housing 3 away from the second housing 4, so that the magnet 5 is located above the first housing 3, thereby allowing the first abrasive grains to be adsorbed onto the top of the flow channel 6.

[0027] Meanwhile, since the second housing 4 is located below the first housing 3, under the influence of gravity and the resistance generated by the first abrasive particles adsorbed on the surface of the first housing 3, the abrasive particles that cannot be attracted by the magnet 5 (i.e., the second abrasive particles) carried by the oil can settle on the surface of the second housing 4 facing the first housing 3, that is, the bottom of the flow channel 6, so that the oil abrasive particle separation device can separate the first abrasive particles and the second abrasive particles from the oil respectively.

[0028] To facilitate the detection of the amount of first abrasive particles adsorbed on the surface of the first housing 3 facing the second housing 4, i.e., the top of the flow channel 6 in the oil abrasive separator, and the amount of second abrasive particles settled on the surface of the second housing 4 facing the first housing 3, i.e., the bottom of the flow channel 6 in the oil abrasive separator, as described above, in this application, the first housing 3 and the second housing 4 are detachable. Therefore, when using the oil abrasive separator to separate abrasive particles from the oil, the first housing 3 and the second housing 4 can be kept relatively fixed, forming the flow channel 6. When it is necessary to detect the first abrasive particles adsorbed on the top of the flow channel 6 and the second abrasive particles settled at the bottom of the flow channel 6, the first housing 3 and the second housing 4 can be separated from each other, each carrying the first and second abrasive particles respectively, and the amount of the first and second abrasive particles can be detected separately.

[0029] It should be noted that, Figure 1 In the structure shown, the first housing 3 is located below the second housing 4 only to prevent the magnet 5 from visually obstructing the flow channel 6 formed by the first housing 3 and the second housing 4, in order to facilitate understanding of this application. In practical applications, the second housing 4 needs to be located below the first housing 3 to ensure that the second abrasive grains can settle to the bottom of the flow channel 6 under their own gravity.

[0030] In order to improve the separation effect of the non-ferromagnetic second abrasive particles, in this application, the second housing 4 is provided with a plurality of retention grooves, wherein each retention groove is connected to the flow channel 6. This allows the second abrasive particles to be retained in the retention grooves, and the blocking effect of the retention grooves can prevent the oil from carrying up the settled second abrasive particles again when flowing in the flow channel.

[0031] Meanwhile, in this embodiment, at least two of the multiple retention grooves provided on the second housing are of different sizes to retain abrasive particles of different sizes in the oil. That is, in the oil abrasive particle separation device disclosed in this embodiment, not only can ferromagnetic and non-ferromagnetic abrasive particles be separated from each other, but also, by utilizing size relationships, non-ferromagnetic second abrasive particles can be further classified, so that operators can determine the operating status of the equipment based on second abrasive particles of different sizes.

[0032] Furthermore, in this application, the grading of second abrasive grains of different sizes is carried out simultaneously with the separation of ferromagnetic and non-ferromagnetic abrasive grains during the oil delivery process. This can significantly reduce the difficulty of separating oil abrasive grains and improve the ease of use of the device.

[0033] This application discloses an oil abrasive separation device, wherein at least one of the first housing 3 and the second housing 4 is provided with a fluid groove, and the two are fixedly connected to form a flow channel 6. The flow channel 6 is provided with an inlet 1 and an outlet 2 that are interconnected, so that oil can be transported into the flow channel 6 through the inlet 1 and flow continuously along the flow channel 6, and finally flow out from the outlet 2 to the outside of the oil abrasive separation device.

[0034] Meanwhile, in the oil abrasive separation device disclosed in this application embodiment, the magnet 5 is disposed on the side of the first housing 3 away from the second housing 4, and the second housing 4 is disposed below the first housing 3. Therefore, during the flow of oil in the flow channel 6, the first abrasive particles with ferromagnetism carried by the oil can be attracted by the magnet 5, so that the first abrasive particles can be adsorbed on the surface of the first housing 3 facing the second housing 4 in the flow channel 6, that is, the top of the flow channel 6. Furthermore, since the second housing 4 is located below the first housing 3, the second abrasive particles in the oil that cannot be adsorbed by the magnet 5 and do not have ferromagnetism can settle under their own weight and finally settle on the surface of the second housing 4 facing the first housing 3, that is, the bottom of the flow channel 6. This allows the oil abrasive separation device to separate the first abrasive particles with ferromagnetism and the second abrasive particles without ferromagnetism carried by the oil separately. Thus, by detecting parameters such as the amount of the first abrasive particles and the second abrasive particles separately, the location of abnormal wear in the hydraulic system can be obtained more accurately.

[0035] Specifically, in this embodiment, the second housing is further provided with multiple retention grooves, which can improve the separation effect of the second abrasive particles, prevent the second abrasive particles that have completed the settling process from being re-carried up by the oil flow, and at least two of the multiple retention grooves are of different sizes, so that the multiple retention grooves can respectively retain abrasive particles of different sizes in the oil, thereby further improving the classification of abrasive particles, and providing a reliable basis for operators to determine the operating status of the equipment based on parameters such as the properties, size, and quantity of abrasive particles. As described above, the separation process between the different sized parts of the second abrasive particles is carried out simultaneously with the separation process of the first and second abrasive particles, thereby greatly reducing the difficulty of separating and classifying oil abrasive particles and greatly improving the ease of use of the separation device.

[0036] In addition, in order to ensure that the first abrasive grain and the second abrasive grain have the ability to be detected separately, in the oil abrasive grain separation device disclosed in this application embodiment, the fixed connection between the first housing 3 and the second housing 4 is a detachable connection. Therefore, when it is necessary to separate the abrasive grains carried by the oil, the first housing 3 and the second housing 4 can be fixedly connected as one body to form a flow channel 6; while when it is necessary to detect the first abrasive grain and the second abrasive grain separately, the fixedly connected first housing 3 and the second housing 4 can be separated from each other.

[0037] As described above, in the oil abrasive separation device disclosed in the embodiments of this application, at least one of the first housing 3 and the second housing 4 is provided with a flow channel groove so that after the first housing 3 and the second housing 4 are fixed to each other, they enclose and form a flow channel 6.

[0038] In one specific embodiment of this application, one of the first housing 3 and the second housing 4 may be provided with a flow channel groove, and correspondingly, the other housing may be covered by a flat surface on its surface to enclose and form a flow channel 6. For example, the surface of the first housing 3 facing the second housing 4 may be provided with a recessed flow channel groove, while the surface of the second housing 4 facing the first housing 3 may be a flat surface.

[0039] In order to improve the separation effect and efficiency of the first abrasive and the second abrasive, in another embodiment of this application, both the first housing 3 and the second housing 4 are provided with flow channel grooves, so that a portion of the flow channel groove on the first housing 3 can accommodate the first abrasive, and a portion of the flow channel groove on the second housing 4 can accommodate the second abrasive. The remaining portion of the flow channel groove in the first housing 3, which is close to the second housing 4, and the remaining portion of the flow channel groove in the second housing 4, which is close to the first housing 3, can provide space for the flow of oil, so as to ensure that the smoothness of the oil flow is still relatively high.

[0040] Furthermore, by adopting the above technical solution, the thickness of the first shell 3 and the second shell 4 does not need to be too large to form a flow channel 6 with a relatively large cross-sectional area. At the same time, by adopting the above technical solution, the overall processing difficulty of the first shell 3 and the second shell 4 can be reduced, and the reliability of the formed flow channel 6 can be relatively high.

[0041] To further reduce the overall processing difficulty of the first housing 3 and the second housing 4, in one specific embodiment of this application, the first housing 3 and the second housing 4 can have identical structures. In this case, the two housings can be processed sequentially, with one being the first housing 3 and the other the second housing 4. That is, in this embodiment of the application, the first housing 3 and the second housing 4 are indistinguishable before assembly with other devices (such as the magnet 5 mentioned above), thereby allowing for the batch processing of multiple housings. When it is necessary to assemble an oil-abrasive particle separation device, two housings can be taken out from the multiple housings and fixed together to form the flow channel 6, which can significantly reduce the processing difficulty of the housings.

[0042] In one specific embodiment of this application, the aforementioned housing can be formed by integral casting to further reduce the overall machining difficulty of the first housing 3 and the second housing 4. Simultaneously, in this embodiment, the first housing 3 and the second housing 4 can be detachably fixed together by means of threaded connections.

[0043] In the above embodiments of this application, the first housing 3 and the second housing 4 can be formed of metallic materials. In this case, ultrasonic waves can be used to detect parameters such as the amount of first abrasive particles adsorbed on the first housing 3 and the amount of second abrasive particles deposited on the second housing 4, using methods such as acoustics.

[0044] In another embodiment of this application, to expand the methods for detecting parameters such as the amount of abrasive particles, both the first housing 3 and the second housing 4 can be made of non-metallic materials. In this case, in addition to the acoustic method described above, methods such as capacitance and inductive methods can also be used to detect parameters such as the amount of the first abrasive particles adsorbed on the first housing 3 and the amount of the second abrasive particles deposited on the second housing 4.

[0045] In another embodiment of this application, both the first housing 3 and the second housing 4 may be made of transparent material. In this case, in addition to the acoustic method described above, an optical method can also be used to detect parameters such as the amount of the first abrasive particles adsorbed on the first housing 3 and the amount of the second abrasive particles deposited on the second housing 4.

[0046] In a further embodiment of this application, both the first shell 3 and the second shell 4 are formed of transparent non-metallic materials. Specifically, polydimethylsiloxane or polymethyl methacrylate can be used to form the first shell 3 and the second shell 4, and by adjusting the length of the polymer chains in the aforementioned materials, both the first shell 3 and the second shell 4 can be solidified into a solid or nearly solid structure. Furthermore, in the above embodiments, the first shell 3 and the second shell 4 can be formed by integral casting, and when both the first shell 3 and the second shell 4 are formed of transparent non-metallic materials, they can be formed by injection molding.

[0047] Specifically, the mold used to form the flow channel groove is first fixed on the substrate in a predetermined position. Then, a transparent non-metallic material is poured onto the substrate. After the material has solidified, the mold is vertically removed from the material to form a shell. Using the above method, multiple shells with the same structure can be formed through multiple processing steps. By splicing and fixing two shells together, a first shell 3 and a second shell 4 with flow channels 6 can be formed.

[0048] Of course, in order to ensure that the precision of the runner 6 is relatively high and to prevent burrs and other defects that may be formed during the injection molding process from interfering with the separation process of the abrasive particles, after the mold is removed from the material, the surface of the material and the formed runner groove and other structures can be trimmed with a cutting tool.

[0049] In the above embodiments, the first housing 3 and the second housing 4 can be detachably connected via a connector. In another embodiment of this application, to reduce the difficulty of assembling and disassembling the first housing 3 and the second housing 4, they can also be fixedly connected as one unit by adhesive bonding. When it is necessary to detect parameters such as the amount of the first and second abrasive grains, a thin blade with a smaller thickness can be embedded in the connection gap between the first housing 3 and the second housing 4, and the first housing 3 and the second housing 4 can be separated again by prying or pressing. Of course, when using the aforementioned technical solution, it is necessary to reasonably control the amount and type of material used to provide adhesive bonding between the first housing 3 and the second housing 4 to prevent the fixed relationship between the first housing 3 and the second housing 4 from being too tight, which would greatly hinder the subsequent disassembly work.

[0050] Furthermore, in the above embodiments, the first shell 3 and the second shell 4 can be formed of transparent non-metallic materials such as polydimethylsiloxane or polymethyl methacrylate. Based on this, in the process of bonding and fixing the first shell 3 and the second shell 4, the material used to form the first shell 3 and the second shell 4 can be liquefied and used as an adhesive to bond the already cured first shell 3 and the second shell 4 together. This can reduce the difficulty of fixing the first shell 3 and the second shell 4, and also make the separation between the first shell 3 and the second shell 4 relatively easy.

[0051] As described above, both the first housing 3 and the second housing 4 can be plate-shaped structures. In practical applications, the dimensions of the flow channel grooves can be designed according to the size of the abrasive particles carried in the oil, and the dimensions of the first and second housings 4 can be set accordingly.

[0052] In one specific embodiment of this application, the thickness of the flow channel 6 can range from 0.01 to 1 cm, where the thickness is the dimension of the flow channel 6 in the stacking direction of the first housing 3 and the second housing 4. Of course, the dimensions of the first housing 3 and the second housing 4 in the aforementioned stacking direction also need to be designed accordingly to ensure that the stability of the formed flow channel 6 meets the requirements. In another specific embodiment of this application, the width of the flow channel 6 can be between 0.01 and 10 cm, which can basically meet the requirements for oil delivery and abrasive particle separation. Of course, the cross-section of the flow channel 6 can be rectangular, etc. In another embodiment of this application, to reduce the difficulty of processing and forming the flow channel 6, the cross-section of the flow channel 6 can be circular or approximately circular.

[0053] The length and width dimensions of the first housing 3 and the second housing 4 can be flexibly selected according to the specific structural form of the flow channel groove.

[0054] For example, in one specific embodiment of this application, the flow channel groove extends in a straight line. In this case, the length of the housing is relatively large, and the width of the housing is relatively small. In another embodiment of this application, in order to ensure that the length and width of the first housing 3 and the second housing 4 are not too large, the flow channel groove can extend in a tortuous and reciprocating manner. For example, the flow channel groove can extend in a serpentine shape.

[0055] More specifically, in one embodiment of this application, the flow channel groove can include multiple straight segments, which can be parallel to each other, and the opposite ends of the multiple straight segments are aligned in the extension direction of the straight segments. Simultaneously, the flow channel groove can also include multiple connecting segments, with the opposite ends of each connecting segment connected to two adjacent straight segments. By connecting multiple straight segments sequentially and without repetition through connecting segments to form the flow channel groove, even with a relatively long path, the space occupied by the flow channel groove in both the length and width directions is not excessive. This results in a relatively small aspect ratio between the first housing 3 and the second housing 4, facilitating separation and inspection, and also increasing the structural strength and reliability of the first housing 3 and the second housing 4. Specifically, the connecting segments can be U-shaped or V-shaped, etc.

[0056] In another embodiment of this application, multiple straight segments can extend at an angle. In this case, the angles of any two adjacent straight segments can be opposite, thus eliminating the need for connecting segments, or the two adjacent straight segments can be interconnected. In this case, even when the path of the flow channel groove is relatively long, the space occupied by the flow channel groove in both the length and width directions will not be too large.

[0057] To further enhance the retention capacity and effect of magnet 5 and gravity on the first and second abrasive particles, respectively, in a further embodiment of this application, a retention groove can be provided to accommodate at least one of the first and second abrasive particles, minimizing the obstruction effect of the adsorbed and settled first and second abrasive particles on the flow of the oil. This prevents the oil from carrying back the adsorbed first abrasive particles and settled second abrasive particles during flow, ensuring the separation effect and thoroughness of the first and second abrasive particles. Of course, when supplying oil to the flow channel 6 of the oil-abrasive particle separation device, the oil flow rate needs to be controlled to keep the oil velocity relatively low, preventing the abrasive particles from failing to completely separate from the oil due to a high flow velocity.

[0058] As described above, at least one of the first housing 3 and the second housing 4 may be provided with a flow channel groove. Therefore, in a specific embodiment of this application, the first housing 3 and the second housing 4 may be provided with a flow channel groove, and the second housing may be provided with a retention groove. In this case, the retention groove is formed by recessing from the surface of the second housing towards the first housing, so as to ensure that the oil flowing in the flow channel groove can flow into the retention groove, and the first abrasive grain (or the second abrasive grain) is correspondingly retained in the retention groove.

[0059] Alternatively, one of the flow channel grooves can be further provided with a retention groove. In this case, the retention groove is provided at the bottom of the flow channel groove and is further recessed relative to the bottom of the flow channel groove. Similarly, when the oil flows in the flow channel groove, the first abrasive grain (or the second abrasive grain) can also be retained in the retention groove.

[0060] It should be noted that the bottom of the flow channel groove is related to the structure of the flow channel groove itself and is independent of the orientation of the flow channel groove. For example, if the flow channel groove is provided on the first housing 3, the flow channel groove is recessed upward in the vertical direction. In this case, the retention groove is formed by further recessing in the vertical direction away from the second housing 4 from the position of the flow channel groove furthest from the second housing 4 (i.e. upward).

[0061] In addition, the retention groove needs to be spaced apart from the inlet 1 and outlet 2 of the flow channel 6 so that the groove wall of the retention groove can provide a blocking effect for the abrasive particles in the direction of oil flow, thereby preventing the oil from smoothly impacting the abrasive particles already retained in the retention groove back into the flow channel 6 from the inlet 1, and preventing the oil from directly flushing the abrasive particles retained in the retention groove out from the outlet 2.

[0062] Based on the above, in one embodiment of this application, in the first housing 3 and the second housing 4, the surface of the first housing is provided with a flow channel groove, and the surface of the second housing is provided with a retention groove. In the flow direction of the fluid in the flow channel, the retention groove is spaced apart from both the inlet 1 and the outlet 2. The flow channel groove and the surface of the second housing form a flow channel 6, and the retention groove is connected to the flow channel 6. The flow direction of the fluid in the flow channel is related to the shape and structure of the flow channel groove. Therefore, the flow direction of the fluid at any position in the flow channel can be the same straight line. When the flow channel has a bent structure, the flow directions of the fluid at different positions in the flow channel can intersect. When the flow channel has a curved structure, the flow direction of the fluid in the flow channel can specifically be the tangential direction at the location of the fluid.

[0063] In another embodiment of this application, at least one of the first housing 3 and the second housing 4 is provided with a retention groove and a flow channel groove. The retention groove is formed by a recess in the bottom of the flow channel groove, and in the flow direction of the fluid in the flow channel, the retention groove is spaced apart from both the inlet 1 and the outlet 2. In this case, only one of the first housing 3 and the second housing 4 may be provided with a flow channel groove and a retention groove. In this case, the flow channel groove and the surface (i.e., the plane) of the other housing enclose the flow channel 6. Alternatively, both the first housing 3 and the second housing 4 may be provided with a flow channel groove and a retention groove. In this case, the flow channel grooves of the first housing 3 and the second housing 4 may be spliced ​​together and enclosed to form the flow channel 6.

[0064] To further improve the retention effect on abrasive particles, optionally, in this application, the number of retention grooves is multiple. Optionally, at least two retention grooves are distributed along the flow direction perpendicular to the fluid in the flow channel 6. To improve the retention effect and retention efficiency, optionally, at least some of the multiple retention grooves are distributed at intervals along the flow direction of the fluid in the flow channel, so that during the flow of oil, retention grooves with upstream and downstream relationships can all provide retention effect, thereby further improving the retention effect on abrasive particles.

[0065] Considering that the size of abrasive grains in oil is not usually absolutely uniform, in order to improve the retention effect of abrasive grains of different sizes, in a specific embodiment of this application, at least two of the multiple retention grooves can be of different sizes, so that the smaller abrasive grains can be retained in the smaller retention grooves, and the larger abrasive grains can be retained in the larger retention grooves.

[0066] The dimension of the retention groove is a relatively general concept. When the retention groove is not circular, its dimension can be the largest among several dimensions of the groove opening perpendicular to the groove's recess direction. Conversely, when the retention groove is circular, its dimension is the diameter of the groove opening. Furthermore, the groove opening is the position where the retention groove connects to the flow channel 6.

[0067] In the above embodiments, retention grooves of different sizes can be randomly or dopedly distributed in the flow channel 6. In another embodiment of this application, a larger retention groove can be disposed upstream of a smaller retention groove.

[0068] Considering that larger abrasive grains experience greater viscous forces in the oil, their flow velocity is typically higher than that of smaller abrasive grains. Furthermore, to prevent larger abrasive grains from being trapped in the flow channel 6 near the inlet 1 (i.e., the upstream region), which would create significant resistance to the flow of both oil and abrasive grains, the trapping effect on smaller abrasive grains would be affected. This results in a poorer size classification effect for the oil-abrasive grain separator. In another embodiment of this application, such as... Figure 1 As shown, in at least two retention grooves distributed along the flow direction of the fluid in the flow channel 6, the size of the retention groove located downstream is larger than the size of the retention groove located upstream.

[0069] Furthermore, multiple retention grooves can be distributed regionally based on their size. For example, if the retention grooves include two sizes, multiple smaller retention grooves can be positioned upstream of multiple larger retention grooves. In this case, when the oil abrasive separation device is separating abrasive particles, it can further separate the smaller and larger abrasive particles from each other. Therefore, in addition to using parameters such as the amount of ferromagnetic and non-ferromagnetic abrasive particles (i.e., the first and second abrasive particles) to infer the operating status of the aforementioned oil, the accuracy of the inferred operating status can be improved by using the size parameter of the ferromagnetic and non-ferromagnetic abrasive particles.

[0070] It should be noted that, in the above embodiments, the second housing 4 may be provided with retention grooves of different sizes, distributed sequentially upstream and downstream, to classify the size of the non-ferromagnetic abrasive particles settled on the second housing 4. Similarly, the first housing 3 may also be provided with retention grooves of different sizes, distributed sequentially upstream and downstream. In this case, although both the larger and smaller first abrasive particles (i.e., ferromagnetic abrasive particles) will be attracted by the magnet 5, the larger first abrasive particles cannot be accommodated in the smaller retention grooves. As a result, the first abrasive particles will still be subject to relatively large oil viscosity and driving force, allowing them to continue flowing with the oil. When they flow to the larger retention grooves, they are attracted by the magnet 5, allowing the larger first abrasive particles to be accommodated in the larger retention grooves. This ensures that the first abrasive particles can also complete the size classification and separation process under the action of the retention grooves of different sizes.

[0071] In another embodiment of this application, the magnetic field strength in different regions can be controlled to allow first abrasive particles of different sizes to be adsorbed onto corresponding regions. Therefore, in this embodiment, the magnet 5 can include a first magnet 13 and a second magnet 14, wherein the magnetic field strengths generated by the first magnet 13 and the second magnet 14 are different, and the first magnet 13 and the second magnet 14 are distributed along the flow direction of the fluid in the flow channel 6.

[0072] When the above technical solution is adopted, taking the magnetic field strength generated by the second magnet 14 as greater than that generated by the first magnet 13 as an example, the larger first abrasive particles can be adsorbed in the area where the second magnet 14 is located in the first housing 3, and the smaller first abrasive particles can be adsorbed in the area where the first magnet 13 is located.

[0073] Of course, in order to prevent the magnet 5 with a relatively strong magnetic field from adsorbing the smaller first abrasive particles at the same time when it adsorbs the larger first abrasive particles, in a specific embodiment of this application, the second magnet 14 can be located downstream of the first magnet 13 in the direction of fluid flow in the flow channel 6, and the magnetic field strength of the second magnet 14 can be greater than that of the first magnet 13.

[0074] In the above embodiment, since the magnetic field strength generated by the first magnet 13 is relatively small, the magnetic adsorption force it generates can only adsorb the smaller first abrasive particles, but cannot retain the larger first abrasive particles. Thus, the larger first abrasive particles can continue to flow with the oil to the downstream area, and under the action of the second magnet 14, the larger first abrasive particles are retained and separated from the oil.

[0075] Of course, when the magnet 5 includes the first magnet 13 and the second magnet 14, and the one with the larger magnetic field strength is located downstream of the other, the aforementioned retention grooves of different sizes and distributed sequentially along the upstream and downstream sides can be further formed on the first housing 3. This can further improve the size classification effect of the first abrasive grains, thereby further improving the accuracy of inferring the operating status of the equipment by using parameters such as the amount of abrasive grains with different properties (such as ferromagnetism) and different sizes among all abrasive grains carried in the oil.

[0076] Of course, in the above embodiments, the size of the retention groove can be more than two types, but can be three, four or more types. In this case, it is also necessary to place the area where the smallest size of the retention groove is located in the flow channel 6 closest to the inlet 1, and place the area where the largest size of the retention groove is located in the flow channel 6 closest to the outlet 2. Correspondingly, the retention grooves of other sizes also need to be distributed sequentially and at intervals along the flow direction of the fluid in the flow channel 6 according to their size.

[0077] Similarly, in addition to the first magnet 13 and the second magnet 14 mentioned above, the magnet 5 may also include a third magnet 15, a fourth magnet 16, and more magnets 5, and the magnetic field strengths generated by the aforementioned multiple magnets 5 are all different. Furthermore, when arranging the aforementioned multiple magnets 5, it is necessary to place the magnet with the lowest magnetic field strength in the flow channel 6 closest to the inlet 1, and to place the magnet with the highest magnetic field strength in the flow channel 6 closest to the outlet 2. Correspondingly, the other magnets with different magnetic field strengths also need to be distributed sequentially and at intervals along the flow direction of the fluid in the flow channel 6, according to the strength of the generated magnetic field.

[0078] In one specific embodiment of this application, such as Figure 3 As shown, the magnet 5 includes a first magnet 13, a second magnet 14, a third magnet 15, a fourth magnet 16, and a fifth magnet 17, which generate magnetic field strengths that increase sequentially and are distributed sequentially along the flow direction of the fluid in the flow channel 6.

[0079] Furthermore, since the flow channel 6 is not necessarily a straight structure, in the above embodiments, the flow direction of the fluid in the flow channel 6 generally refers to the direction from the inlet 1 to the outlet 2. In a specific embodiment of this application, both the inlet 1 and the outlet 2 can be provided on the first housing 3. In order to reduce the overall processing difficulty of the first housing 3 and the second housing 4, both the first housing 3 and the second housing 4 can be provided with a part of the inlet 1, which are spliced ​​together and enclosed to form the inlet 1. Similarly, both the first housing 3 and the second housing 4 are provided with a part of the outlet 2, which are spliced ​​together and enclosed to form the outlet 2. In this case, along the flow direction of the fluid in the flow channel 6, the inlet 1 and the outlet 2 are located at opposite ends of the first housing 3 (and the second housing 4), respectively.

[0080] To further improve the accuracy of inferring the operating status of equipment using the parameters of abrasive particles in the oil, in another embodiment of this application, the shape of the abrasive particles separated from the oil can also be distinguished. In this case, such as Figure 2 As shown, at least two retention grooves can be made to have different shapes.

[0081] In detail, the size and shape of the retention grooves can be combined to improve separation efficiency and effect. For example, in two regions of the same or substantially the same size, the shapes of the retention grooves in one region and the other region can be different. More specifically, the shape of the retention groove refers to the shape of the groove opening, which can include circles, rectangles, triangles, etc., and is not limited thereto in this article.

[0082] Based on the above technical solution, in a specific embodiment of this application, such as Figure 2 As shown, the retention groove can form multiple retention areas, specifically including a first retention area 7, a second retention area 8, a third retention area 9, a fourth retention area 10, a fifth retention area 11, and a sixth retention area 12, which are sequentially distributed along the flow direction of the fluid in the flow channel 6. Each retention area includes multiple retention grooves. Of course, the number of at least one of the first retention area 7, the second retention area 8, the third retention area 9, the fourth retention area 10, the fifth retention area 11, and the sixth retention area 12 can be one or more, and the multiple first retention areas 7 (or second retention areas 8, etc.) are arranged adjacent to each other in the flow direction of the fluid in the flow channel 6.

[0083] The size of the retention grooves in the first retention area 7 and the second retention area 8 is smaller than the size of the retention grooves in the third retention area 9 and the fourth retention area 10, and the size of the retention grooves in the third retention area 9 and the fourth retention area 10 is smaller than the size of the retention grooves in the fifth retention area 11 and the sixth retention area 12.

[0084] Simultaneously, the retention grooves in the first retention region 7 and the second retention region 8 are of similar size, but their shapes are different; one region may have a circular groove, while the other may have a rectangular groove. Similarly, the retention grooves in the third retention region 9 and the fourth retention region 10 are of similar size, but their shapes are different; one region may have a circular groove, while the other may have a rectangular groove. Likewise, the retention grooves in the fifth retention region 11 and the sixth retention region 12 are of similar size, but their shapes are different; one region may have a circular groove, while the other may have a rectangular groove. More specifically, in the two retention regions of similar size, the upstream region has a circular groove, while the downstream region has a rectangular groove, to further improve the separation effect of abrasive particles of different shapes.

[0085] As described above, this application provides an oil abrasive particle separation device that can separate ferromagnetic abrasive particles (i.e., first abrasive particles) and non-ferromagnetic abrasive particles (i.e., second abrasive particles) carried in the oil. The first abrasive particles are attracted to the surface of the first housing 3 facing the second housing 4 (i.e., the top of the flow channel 6) by a magnet 5, while the second abrasive particles sink to the surface of the second housing 4 facing the first housing 3 (i.e., the bottom of the flow channel 6) under their own gravity. Afterwards, by separating the first housing 3 and the second housing 4, the amount of each abrasive particle can be detected using a detection device. Since the abrasive particles are extremely small, typically around micrometers in size, and their surfaces are adhered to by oil, the aforementioned amount is usually characterized by more or less, rather than a specific quantity or weight. Furthermore, the aforementioned "amount" can also be expressed as concentration, i.e., the amount of abrasive particles contained in a preset volume of oil. Therefore, the detection device is a concentration detection device.

[0086] Based on the above, this application also provides an oil abrasive particle detection device, which includes a concentration detection device and any of the above-mentioned oil abrasive particle separation devices.

[0087] As mentioned above, acoustic detection methods can be used to detect the concentration of abrasive particles in oil. In another embodiment of this application, in order to prevent the ultrasonic waves used in the acoustic detection method from further breaking the abrasive particles and destroying the original data on the size and shape of the abrasive particles, which would adversely affect the results of inferring the operating status of the equipment using the parameters of the abrasive particles, other methods can be used to detect the concentration of abrasive particles in oil in another embodiment of this application.

[0088] For example, optical or inductive detection methods can be used to detect the concentration of abrasive particles in the oil. Of course, when using optical detection to detect the concentration of abrasive particles in the oil, if the first housing 3 and the second housing 4 are not transparent, the first abrasive particles adsorbed on the first housing 3 need to be removed from the first housing 3 for detection; correspondingly, the second abrasive particles carried in the second housing 4 also need to be poured out of the second housing 4 for detection.

[0089] Similarly, when using inductive detection methods to detect the concentration of abrasive particles in oil, if both the first housing 3 and the second housing 4 are made of metal, it is also necessary to remove the first abrasive particles adsorbed on the first housing 3 from the first housing 3, and pour out the second abrasive particles carried in the second housing 4 from the second housing 4, in order to complete the detection of the first and second abrasive particles.

[0090] Based on the above, in a specific embodiment of this application, both the first housing 3 and the second housing 4 can be made of transparent material. In this case, the concentration detection device can include an optical concentration detection device. Then, after the separation of the first abrasive grains and the second abrasive grains in the oil is completed, the first housing 3 and the second housing 4 can be placed directly on the optical concentration detection device with optical concentration detection capability to complete the concentration detection of the first abrasive grains and the second abrasive grains respectively.

[0091] In another embodiment of this application, the first housing 3 and the second housing 4 can both be made of non-metallic materials. In this case, the concentration detection device includes an inductive concentration detection device. Then, after the separation of the first abrasive grains and the second abrasive grains in the oil is completed, the first housing 3 and the second housing 4 can be placed directly on the inductive concentration detection device with inductive concentration detection capability to complete the concentration detection of the first abrasive grains and the second abrasive grains respectively.

[0092] In one specific embodiment of this application, the first housing 3 and the second housing 4 can both be formed of transparent non-metallic material. In this case, the concentration detection device includes an optical concentration detection device and an inductive concentration detection device. After the first abrasive grain and the second abrasive grain have completed the separation process, the first housing 3 and the second housing 4 can be subjected to concentration detection at the optical concentration detection device and the inductive concentration detection device respectively, so as to further improve the accuracy of the detected concentration results of the first abrasive grain and the second abrasive grain.

[0093] In cases where the oil is heavily contaminated, resulting in a darker color, the oil adhering to the surfaces of the abrasive grains, the first housing 3, and the second housing 4 can significantly interfere with the detection results of the optical concentration detection device. Furthermore, the presence of non-metallic particles in the second abrasive grains can cause a deviation between the detection results of the inductive concentration detection device and the actual concentration of the second abrasive grains. Therefore, using both optical and inductive concentration detection devices sequentially to detect the concentration of the first and second abrasive grains can improve the accuracy of the detection results.

[0094] Of course, when the first and second abrasive grains are also used to classify the size and shape using the retention groove, the concentration of the first and second abrasive grains of different sizes and shapes can be detected separately to further improve the accuracy of inferring the operating status of the equipment using the parameters of the abrasive grains.

[0095] In one specific embodiment of this application, such as Figure 4 As shown, the optical concentration detection device may include a photoelectric sensor 18, a light emitter 19, and a support platform 21. Specifically, the photoelectric sensor 18 may be a photodiode, and the light emitter 19 may be a laser emitter 19.

[0096] The light emitter 19 is positioned facing the support platform 21, and the support platform 21 is equipped with a photoelectric sensor 18. The photoelectric sensor 18 also needs to be connected to a corresponding current or voltage detection device. During the detection process, the first housing 3 (or the second housing 4) can be placed between the photoelectric sensor 18 and the light emitter 19 on the support platform 21. The light emitter 19 is turned on, allowing the emitted light to pass through the first housing 3 (and the first abrasive grains it adsorbs) and be received by the photoelectric sensor 18. The photoelectric sensor 18 converts the light signal into a corresponding electrical signal. Based on the strength or magnitude of the electrical signal, the quantity of the first abrasive grain can be determined. Similarly, the measurement process for the second abrasive grain is the same.

[0097] Furthermore, in the design of the optical concentration detection device, the distribution of the light emitter 19 and the photoelectric sensor 18 can be designed according to the size and shape of the first housing 3 and the second housing 4. For example, when the first housing 3 is placed on the support platform 21, all areas in the first housing 3 where the first abrasive particles are adsorbed can be exposed to the light field emitted by the light emitter 19. Correspondingly, the transmitted light passing through different areas in all areas of the first housing 3 where the first abrasive particles are adsorbed can be received by the corresponding photoelectric sensor 18, so that the amount of first abrasive particles of different sizes or shapes in different areas of all areas in the first housing 3 where the first abrasive particles are adsorbed can be obtained in a single detection.

[0098] Alternatively, the light field coverage area of ​​the light emitter 19 and the light field receiving area of ​​the photoelectric sensor 18 can both be smaller than the area in the first housing 3 where the first abrasive particles are adsorbed. In this case, the first housing 3 can be tested in multiple partitions to complete the detection of the amount of first abrasive particles of different sizes or shapes adsorbed at different locations in the area in the first housing 3 where the first abrasive particles are adsorbed.

[0099] Of course, in the above embodiments, the position of the first housing 3 on the support platform 21 can also be kept unchanged, and the positions of the light field coverage area and the light field receiving area on the first housing 3 can be changed by moving the positions of the light emitter 19 and the photoelectric sensor 18.

[0100] Alternatively, the light field coverage area of ​​the light emitter 19 and the light field receiving area of ​​the photoelectric sensor 18 can be made smaller than the area in the first housing 3 where the first abrasive particles are adsorbed. In this case, by moving the smaller area, the detection of the amount of first abrasive particles of different sizes or shapes adsorbed at different positions in the area in the first housing 3 where the first abrasive particles are adsorbed can also be completed in sections.

[0101] like Figure 4 As shown, the light field coverage area of ​​the light emitter 19 can be made comparable to the area in the first housing 3 where the first abrasive particles are adsorbed, and the light field receiving area of ​​the photoelectric sensor 18 can be smaller than the area in the first housing 3 where the first abrasive particles are adsorbed. In this case, the optical concentration detection device may also include a movable platform 20, on which the photoelectric sensor 18 is mounted, and the movable platform 20 is movably connected to the support platform 21.

[0102] In one specific embodiment of this application, such as Figure 5 As shown, the inductive concentration detection device includes an inductive detection coil. Ferromagnetic abrasive particles, under the influence of magnetization, increase the inductance of the detection coil, while non-ferromagnetic metal abrasive particles, under the influence of eddy currents, cause the inductance to decrease. Therefore, by obtaining the detected value of the inductance of the detection coil, the amount of abrasive particles can be determined accordingly.

[0103] More specifically, multiple inductance detection coils can be arranged into an array-type inductance detection module 22 to improve detection accuracy. Of course, there can also be multiple array-type inductance detection modules 22, and these multiple array-type inductance detection modules 22 can also be distributed in an array.

[0104] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0105] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An oil-abrasive particle separation device, characterized in that, It includes a first housing (3), a second housing (4), and a magnet (5), wherein, At least one of the first housing (3) and the second housing (4) is provided with a flow channel groove. The first housing (3) and the second housing (4) are detachably fixedly connected to form a flow channel (6). The flow channel (6) is provided with an inlet (1) and an outlet (2) that communicate with each other. The second housing (4) is provided with a plurality of retention grooves, each of which is connected to the flow channel (6), and at least two of the plurality of retention grooves are of different sizes, so as to retain abrasive particles of different sizes in the oil respectively; The magnet (5) is disposed on the side of the first housing (3) away from the second housing (4), and the second housing (4) is disposed below the first housing (3).

2. The oil-abrasive particle separation device according to claim 1, characterized in that, The surface of the first housing (3) is provided with the flow channel groove, and the surface of the second housing (4) is provided with the retention groove. In the flow direction of the fluid in the flow channel, the retention groove is spaced apart from the inlet (1) and the outlet (2). The flow channel groove and the surface of the second housing facing the first housing form the flow channel (6), and the retention groove is connected to the flow channel (6).

3. The oil-abrasive particle separation device according to claim 1, characterized in that, The second housing (4) is provided with the retention groove and the flow channel groove. The retention groove is formed by the recess from the bottom of the flow channel groove, and the retention groove is spaced apart from the inlet (1) and the outlet (2) in the flow direction of the fluid in the flow channel.

4. The oil-abrasive particle separation device according to claim 1, characterized in that, At least some of the plurality of retention grooves are distributed at intervals along the flow direction of the fluid in the flow channel, and / or At least some of the plurality of retention grooves are distributed at intervals along a direction perpendicular to the flow direction of the fluid in the flow channel.

5. The oil-abrasive particle separation device according to claim 1, characterized in that, In at least two retention grooves distributed along the flow direction of the fluid in the flow channel (6), the size of the downstream retention groove is larger than the size of the upstream retention groove; and / or At least two of the retention grooves have different shapes.

6. The oil-abrasive particle separation device according to claim 1, characterized in that, The magnet (5) includes a first magnet (13) and a second magnet (14). In the direction of fluid flow in the flow channel (6), the second magnet (14) is located downstream of the first magnet (13), and the magnetic field strength of the second magnet (14) is greater than that of the first magnet (13).

7. The oil-abrasive particle separation device according to claim 1, characterized in that, The first housing (3) and the second housing (4) have the same structure.

8. The oil-abrasive particle separation device according to claim 1, characterized in that, Both the first housing (3) and the second housing (4) are formed of transparent material; and / or Both the first housing (3) and the second housing (4) are made of non-metallic materials.

9. An oil abrasive particle detection device, characterized in that, It includes a concentration detection device and an oil abrasive separation device as described in any one of claims 1-8.

10. The oil abrasive particle detection equipment according to claim 9, characterized in that, Both the first housing (3) and the second housing (4) are made of transparent material, and the concentration detection device includes an optical concentration detection device; and / or Both the first housing (3) and the second housing (4) are made of non-metallic materials, and the concentration detection device includes an inductive concentration detection device.

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