Oil particle detection device

Abstract

The invention belongs to the technical field of oil particle detection, and discloses an oil particle detection device. The oil particle detection device comprises a light source, a base, a magnetic field assembly, a movable pressing block and a receiving probe, wherein the light source penetrates through the base and is configured to emit light in a preset direction; the magnetic field assembly is arranged on the upper side of the base, the movable pressing block is arranged on the upper side of the magnetic field assembly and used for clamping the glass pipe sleeve together with the magnetic field assembly, and the magnetic field assembly can adsorb particles in oil liquid to the wall of the glass pipe. The receiving probe is installed on the movable pressing block, a first through hole corresponding to the probe is formed in the movable pressing block, light of the light source can sequentially penetrate through the base, the magnetic field assembly, the glass pipe sleeve and the first through hole and is received by the receiving probe, and the receiving probe is in communication connection with an upper computer. The upper computer can obtain the number of particles in the oil liquid according to the shading condition of the light received by the receiving probe. The oil particle detection device can directly read particles in oil without a microscope, and is convenient and fast to operate.

Description

Technical Field

[0001] This invention relates to the field of oil particle detection technology, and more particularly to an oil particle detection device. Background Technology

[0002] In fields such as power generation, petrochemicals, construction machinery, shipping, aerospace, and military equipment, the safe and reliable operation of machinery is crucial. Lubricating oil, as a liquid lubricant for machinery, reduces friction and wear between mechanical parts, and plays a role in cooling, sealing, cleaning, buffering, and rust prevention. After use, lubricating oil carries wear particles from mechanical parts. It is necessary to determine the operating condition of each machine and understand the degree of wear of mechanical equipment (such as engines) based on the size and quantity of these particles, and to take appropriate preventative measures in advance. Existing oil particle detection devices require a microscope to count particles, which cannot directly read the number of particles in the oil, increasing the complexity of the device's operation.

[0003] Therefore, there is an urgent need to design an oil particle detection device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an oil particle detection device that can directly read particles in oil without the need for a microscope, and is convenient and quick to operate.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Oil particle detection device, including:

[0007] A light source and a base, wherein the light source passes through the base and is configured to emit light in a preset direction;

[0008] A magnetic field assembly and a movable pressure block are provided. The magnetic field assembly is disposed on the upper side of the base, and the movable pressure block is disposed on the upper side of the magnetic field assembly and is used to clamp the glass tube sleeve together with the magnetic field assembly. The magnetic field assembly is configured to adsorb particles in the oil onto the inner wall of the glass tube sleeve.

[0009] A receiving probe is installed on the aforementioned movable pressure block. The movable pressure block has a first through hole corresponding to the probe. The light from the light source can pass through the aforementioned base, the aforementioned magnetic field component, the aforementioned glass tube sleeve, and the aforementioned first through hole in sequence and be received by the aforementioned receiving probe. The receiving probe is connected to a host computer for communication. The host computer can obtain the number of particles in the oil by the light blocking situation of the light received by the receiving probe.

[0010] As an optional solution, the base has a receiving groove extending along a first direction, which is perpendicular to the preset direction, and the magnetic field component includes:

[0011] The first magnetic conductive element is disposed at the bottom of the aforementioned receiving groove;

[0012] A magnetic shielding block extends along the first direction and is disposed on the upper side of the first magnetic conductive element;

[0013] Two magnets are both located on the upper side of the first magnetic conductive element and on both sides of the magnetic shielding block.

[0014] Two second magnetic conductive elements are respectively disposed on the upper side of the magnet, and the two second magnetic conductive elements are respectively disposed on both sides of the magnetic shielding block.

[0015] The aforementioned magnetic shielding block, the two aforementioned second magnetic conductive elements, and the aforementioned movable pressure block together form a receiving hole, which is used to receive the aforementioned glass tube sleeve, and the receiving hole extends along the aforementioned first direction.

[0016] As an alternative, a second through hole is provided on the aforementioned magnetic shielding block, and a light guide post is placed in the second through hole. The light guide post extends along the aforementioned preset direction and is positioned between the aforementioned light source and the aforementioned receiving probe.

[0017] As an optional solution, the aforementioned magnetic shielding block includes a connected support portion, an inclined portion, and an upper portion. The support portion is placed on the first magnetic conductive member. The dimension of the upper portion in the second direction is smaller than the dimension of the support portion in the second direction. The cross-section of the inclined portion is trapezoidal, and its two ends are respectively connected to the support portion and the upper portion. The bottom of the second magnetic conductive member is higher than or flush with the connection between the support portion and the inclined portion. The upper portion of the second magnetic conductive member is not higher than the upper side of the upper portion. The side of the second magnetic conductive member facing the magnetic shielding block is adapted to the shape of the magnetic shielding block. The second direction is perpendicular to the first direction and the preset direction.

[0018] As an optional solution, the above-mentioned oil particle detection device also includes an angled frame, the base is installed on the top surface of the angled frame, and the top surface of the angled frame is inclined relative to the bottom surface so that the oil inlet end of the glass sleeve is lower than the oil outlet end of the glass sleeve.

[0019] As an optional solution, the above-mentioned oil particle detection device also includes an upper fixed seat, which is connected to the upper side of the base, and the movable pressure block is elastically connected to the upper fixed seat so that the movable pressure block can clamp or release the glass tube sleeve.

[0020] As an optional solution, the aforementioned oil particle detection device further includes a drive assembly, which comprises:

[0021] The push handle includes a lever and a drive unit. The lever is pivotally connected to the side wall of the upper fixed seat. The drive unit is set at an angle to the first end of the lever and is partially located on the upper side of the upper fixed seat. An elastic element is provided between the upper fixed seat and the drive unit. A U-shaped groove is opened at the other end of the lever.

[0022] The connector has an elongated hole extending along the preset direction on the upper fixed seat. The movable pressure block is located on the side of the upper fixed seat away from the lever. The connector includes a stop and a connecting part. The connecting part passes through the elongated hole and connects to the movable pressure block. Part of the connecting part is slidably disposed in the U-shaped groove. The diameter of the stop is larger than the width of the U-shaped groove.

[0023] As an optional solution, the aforementioned upper fixed seat includes a body and a first guide portion. The aforementioned lever and the aforementioned movable pressure block are respectively disposed on both sides of the aforementioned body. The aforementioned first guide portion is connected to the side of the aforementioned body facing the aforementioned movable pressure block. The side of the aforementioned first guide portion facing the aforementioned base has a first guide groove along a first direction. Part of the aforementioned movable pressure block is accommodated in the aforementioned first guide groove. When the aforementioned movable pressure block presses against the aforementioned glass tube sleeve, the aforementioned movable pressure block and the bottom of the aforementioned first guide groove are spaced apart.

[0024] As an alternative, the oil inlet end of the first guide portion is retracted relative to the main body to form a clearance notch. The movable pressure block includes a mounting portion and a first limiting portion connected along a first direction. The mounting portion is located at the clearance notch and is set higher than the first limiting portion. A portion of the first limiting portion can slide in the first guide groove. The receiving probe is mounted on the mounting portion, and at least a portion of the first limiting portion is accommodated in the first guide groove.

[0025] As an optional solution, the receiving probe includes a probe holder and a probe. The bottom of the probe holder has a third through hole. The probe passes through the third through hole and is confined to the bottom of the probe holder. The mounting part has a first receiving groove, a second receiving groove, and the first through hole that are connected sequentially from top to bottom. The probe holder is accommodated in the first receiving groove, and the bottom of the probe is accommodated in the second receiving groove. A locking member abuts against the probe holder from the side of the mounting part.

[0026] The beneficial effects of this invention are as follows:

[0027] This invention provides an oil particle detection device. A magnetic field component and a movable pressure block together press a glass tube sleeve tightly. When oil flows through the glass tube sleeve, the magnetic field component adsorbs the shell onto the tube wall of the proportional tube sleeve. A light source illuminates the particles captured by the magnetic field component. A receiving probe transmits the information about the blocked light to a host computer, which converts the light-blocking signal into a particle counting signal, thus directly obtaining the number of particles in the oil. This method can directly measure the number of particles in the oil, eliminating the need for a microscope and making operation more convenient and faster. Attached Figure Description

[0028] To more clearly and understandably illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the oil particle detection device provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the oil particle detection device provided in an embodiment of the present invention. Figure 1 ;

[0031] Figure 3 This is a cross-sectional view of the oil particle detection device provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the oil particle detection device provided in the embodiment of the present invention. Figure 2 ;

[0033] Figure 5 The explosion of the oil particle detection device provided in the embodiment of the present invention. Figure 2 .

[0034] In the picture:

[0035] 10. Light source; 11. Light source support plate; 20. Base; 21. Receiving slot;

[0036] 30. Movable pressure block; 31. Mounting part; 311. First through hole; 312. First receiving groove; 313. Second receiving groove; 314. First locking hole; 32. First limiting part; 33. Second limiting part; 34. Receiving hole; 35. Clearance notch;

[0037] 40. Receiving probe; 41. Probe mounting base; 411. Third through hole; 42. Probe;

[0038] 50. Light guide column; 60. Angled bracket;

[0039] 70. Upper fixing seat; 71. Body; 711. Elongated hole; 712. Second guide groove; 72. First guide part; 721. First guide groove;

[0040] 80. Drive assembly; 81. Press handle; 811. Lever; 8111. U-shaped groove; 812. Drive unit; 82. Elastic element; 83. Connector; 831. Stop; 832. Connecting part; 833. Sliding part;

[0041] 90. Magnetic field assembly; 91. First magnetic conductive element; 92. Magnetic shielding block; 921. Second through hole; 922. Support part; 923. Inclined part; 924. Upper part; 93. Magnet; 94. Second magnetic conductive element; 941. Inclined surface; 200. Glass tube sleeve. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0043] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0046] This embodiment provides an oil particle detection device that can directly read particles in oil without the need for a microscope, and is convenient and quick to operate. Figures 1-3 As shown, the oil particle detection device includes a light source 10, a base 20, a magnetic field assembly 90, a movable pressure block 30, and a receiving probe 40. The light source 10 passes through the base 20 and is configured to emit light along a preset direction (Z direction in the figure). The magnetic field assembly 90 is disposed on the upper side of the base 20, and the movable pressure block 30 is disposed on the upper side of the magnetic field assembly 90 and is used to clamp the glass tube sleeve 200 together with the magnetic field assembly 90. The magnetic field assembly 90 is configured to adsorb the particles in the oil onto the inner wall of the glass tube sleeve 200. The receiving probe 40 is installed on the movable pressure block 30, and the movable pressure block 30 has a first through hole 311 corresponding to the probe 42. The light from the light source 10 can pass through the base 20, the magnetic field assembly 90, the glass tube sleeve 200, and the first through hole 311 in sequence and be received by the receiving probe 40. The receiving probe 40 is communicatively connected to a host computer (not shown in the figure), and the host computer can obtain the number of particles in the oil by the light blocking situation of the light received by the receiving probe 40.

[0047] The aforementioned oil particle detection device, by setting up a magnetic field component 90, together with the movable pressure block 30, presses the glass tube sleeve 200 tightly. When the oil flows from inside the glass tube sleeve 200 through the magnetic field component 90, the magnetic field component 90 adsorbs the particles onto the tube wall of the glass tube sleeve 200. The light source 10 illuminates the particles captured by the magnetic field component 90, and the receiving probe 40 transmits the information about the light being blocked to the host computer. The host computer converts the light blocking signal into a particle counting signal, thereby directly obtaining the number of particles in the oil. This method can directly measure the number of particles in the oil. Using the receiving probe 40 to achieve direct reading of the number of particles in the oil eliminates the need for a microscope, making the operation more convenient and faster.

[0048] It should be noted that the device is also equipped with a necessary display screen to show the test results, which will not be elaborated here.

[0049] Optionally, such as Figure 1 and Figure 2As shown, the base 20 has a receiving groove 21 extending along a first direction (X direction in the figure, which is perpendicular to the Z direction). The magnetic field assembly 90 includes a first magnetic conductor 91, a magnetic shielding block 92, two magnets 93, and two second magnetic conductors 94. The first magnetic conductor 91 is disposed at the bottom of the receiving groove 21. The magnetic shielding block 92 extends along the first direction and is disposed on the upper side of the first magnetic conductor 91. The two magnets 93 are both disposed on the upper side of the first magnetic conductor 91 and are disposed on both sides of the magnetic shielding block 92. The two second magnetic conductors 94 are disposed on the upper side of the magnets 93, and are disposed on both sides of the magnetic shielding block 92. The magnetic shielding block 92, the two second magnetic conductors 94, and the movable pressure block 30 together form a receiving hole 34, which is used to receive the glass tube sleeve 200. The receiving hole 34 extends along the first direction. With the above setup, the magnetic blocking block 92 separates the two magnets 93, and then, combined with the first magnetic conductor 91 and the second magnetic conductor 94, makes the magnetic field of the magnetic field assembly 90 ring-shaped, which is more conducive to adsorbing particles in the oil in the glass tube sleeve 200 above the magnetic field assembly 90.

[0050] Optionally, such as Figure 1 and Figure 3 As shown, a second through hole 921 is formed on the magnetic shielding block 92, and a light guide post 50 is placed inside the second through hole 921. The light guide post 50 extends along a preset direction and is positioned between the light source 10 and the receiving probe 40. Through the above arrangement, the light guide post 50 can concentrate the relatively dispersed light emitted by the light source 10 into light along the preset direction, so as to accurately irradiate the particles, and the light shielding information received by the receiving probe 40 is also more accurate.

[0051] Optionally, such as Figure 1 As shown, the magnetic shielding block 92 includes a connected support portion 922, an inclined portion 923, and an upper portion 924. The support portion 922 is placed on the first magnetic conductive element 91. The upper portion 924 has a smaller dimension in the second direction (Y direction in the figure, X direction, Y direction, and Z direction are mutually perpendicular) than the dimension of the support portion 922 in the second direction. The inclined portion 923 has a trapezoidal cross-section and its two ends are connected to the support portion 922 and the upper portion 924, respectively. The bottom of the second magnetic conductive element 94 is higher than or flush with the connection between the support portion 922 and the inclined portion 923. The upper portion 924 of the second magnetic conductive element 94 is not higher than the upper side of the upper portion 924. The side of the second magnetic conductive element 94 facing the magnetic shielding block 92 is adapted to the shape of the magnetic shielding block 92. That is, the closer the two second magnetic conductive elements 94 are to the glass tube sleeve 200, the closer they are, making the magnetic field acting on the glass tube sleeve 200 stronger, which is beneficial for adsorbing particles onto the inner wall of the glass tube sleeve 200. Specifically, as Figure 1 As shown, the second magnetic conductor 94 has an inclined surface 941 on the side facing the magnetic shielding block 92 that gradually approaches the magnetic shielding block 92 from bottom to top, so that the closer to the glass tube sleeve 200, the shorter the magnetic shielding distance.

[0052] Optionally, the magnetic shielding block 92 is made of aluminum, which has a good magnetic shielding effect and a low density, making the whole device lighter.

[0053] Optionally, such as Figure 3 As shown, the oil particle detection device also includes an angled frame 60, with a base 20 mounted on the top surface of the angled frame 60. The top surface of the angled frame 60 is inclined relative to the bottom surface so that the oil inlet end of the glass sleeve 200 is lower than the oil outlet end of the glass sleeve 200. The oil flow direction is... Figure 3 The direction of the middle arrow indicates that the oil inlet of the glass tube sleeve 200 is lower and the oil outlet is higher. This ensures that the oil flow is slow and uniform, effectively mitigating the differences in test data caused by the uncertainty of the natural flow speed.

[0054] Optionally, the angle between the top surface of the angled bracket 60 and the horizontal plane is 20°. In other embodiments, the angle between the top surface of the angled bracket 60 and the horizontal plane can be adaptively selected between 18° and 25°, which is not limited here.

[0055] It should be noted that, in order to ensure the slow flow of the oil and prevent the gas inside the glass tube sleeve 200 from affecting the test results, a pump is also installed in the oil circulation pipeline to suck out the gas inside the glass tube sleeve 200 before the oil is introduced.

[0056] Optionally, such as Figure 2 , Figure 4 and Figure 5 As shown, the oil particle detection device also includes an upper fixed seat 70, which is connected to the upper side of the base 20. A movable pressure block 30 is elastically connected to the upper fixed seat 70 so that the movable pressure block 30 can clamp or release the glass tube sleeve 200. This allows the glass tube sleeve 200 to be easily placed into the receiving hole 34 when the movable pressure block 30 is raised relative to the upper fixed seat 70, and automatically presses the glass tube sleeve 200 when released.

[0057] Optionally, such as Figure 2 , Figure 4 and Figure 5As shown, the oil particle detection device also includes a drive assembly 80, which includes a pressing handle 81 and a connecting member 83. The pressing handle 81 includes a lever 811 and a drive part 812. The lever 811 is pivotally connected to the side wall of the upper fixed seat 70. The drive part 812 is set at an angle to the first end of the lever 811 and is partially located on the upper side of the upper fixed seat 70. An elastic member 82 is provided between the upper fixed seat 70 and the drive part 812. The other end of the lever 811 has a U-shaped opening. The upper fixed seat 70 has an elongated hole 711 extending in a preset direction. The movable pressure block 30 is located on the side of the upper fixed seat 70 away from the lever 811. The preset direction is perpendicular to the first direction. The connecting member 83 includes a stop part 831 and a connecting part 832. The connecting part 832 passes through the elongated hole 711 and connects to the movable pressure block 30. Part of the connecting part 832 can be slidably disposed in the U-shaped groove 8111. The diameter of the stop part 831 is larger than the width of the U-shaped groove 8111. With the above settings, when it is necessary to lift the movable pressure block 30, there is no need to lift the movable pressure block 30 by hand. Press the drive part 812 down, the elastic member 82 is compressed, the lever 811 rotates, causing the U-shaped groove 8111 to move upward, driving the connector 83 to slide along the extension direction of the elongated hole 711. Since the connector 83 is connected to the movable pressure block 30, it drives the movable pressure block 30 to move upward. At this time, the glass tube sleeve 200 can be placed into the receiving hole 34. When the external force is removed, under the elastic force of the elastic member 82, the drive part 812 moves upward, and the movable pressure block 30 moves downward to approach the magnetic field component 90, thereby clamping the glass tube sleeve 200.

[0058] Optionally, such as Figure 5 As shown, there is a sliding part 833 between the connecting part 832 and the stop part 831. The diameter of the sliding part 833 is smaller than the diameter of the elongated hole 711. The connecting part 832 can be threadedly connected to the movable pressure block 30, and the sliding part 833 is a smooth rod to prevent wear with the elongated hole 711.

[0059] Optionally, see Figures 1-3 The upper fixed base 70 includes a body 71 and a first guide portion 72. A lever 811 and a movable pressure block 30 are respectively disposed on both sides of the body 71. The first guide portion 72 is connected to the side of the body 71 facing the movable pressure block 30. The first guide portion 72 has a first guide groove 721 along a first direction on the side facing the base 20. Part of the movable pressure block 30 is accommodated in the first guide groove 721, and when the movable pressure block 30 presses against the glass tube sleeve 200, the movable pressure block 30 and the bottom of the first guide groove 721 are spaced apart. Through the above arrangement, when the movable pressure block 30 is raised or pressed down in a preset direction, the side wall of the first guide groove 721 can limit the movable pressure block 30 in the preset direction, preventing the movable pressure block 30 from moving.

[0060] Optionally, such as Figure 3As shown, the main body 71 begins with a second guide groove 712 on the side facing the movable pressure block 30. The second guide groove 712 extends along a preset direction. The movable pressure block 30 is provided with a second limiting part 33. At least part of the second limiting part 33 is slidably engaged with the second guide groove 712. The connecting member 83 is connected to the second limiting part 33. That is, the elongated hole 711 is connected to the second guide groove 712. Through the above arrangement, the second limiting part 33 can prevent the movable pressure block 30 from moving in the first direction, while the first guide groove 721 prevents the movable pressure block 30 from moving in the second direction. Thus, the movement direction of the movable pressure block 30 is precisely limited to the preset direction.

[0061] Optionally, such as Figure 2 and Figure 3 As shown, the oil inlet end of the first guide portion 72 is retracted relative to the body 71 to form a clearance notch 35. The movable pressure block 30 includes a mounting portion 31 and a first limiting portion 32 connected along the first direction. The mounting portion 31 is located at the clearance notch 35 and is set higher than the first limiting portion 32. Part of the first limiting portion 32 can slide in the first guide groove 721. The receiving probe 40 is mounted on the mounting portion 31, and at least part of the first limiting portion 32 is accommodated in the first guide groove 721. On the one hand, the installation part 31 is ensured to have sufficient height for installation space to accommodate the receiving probe 40. On the other hand, the receiving probe 40 is positioned at the oil inlet end of the glass tube sleeve 200. Due to the flow of oil and the tilt of the angled bracket 60, larger particles are more easily adsorbed onto the inner wall of the glass tube sleeve 200 at the oil inlet end, while smaller particles are generally adsorbed at the oil outlet end of the glass tube sleeve 200. During the detection process, the detection of larger particles is of practical significance. This arrangement makes it easier for the light source 10 and the receiving probe 40 to capture the particles gathered at the oil inlet end of the glass tube sleeve 200 and count them.

[0062] Optionally, such as Figure 1 and Figure 3 As shown, the receiving probe 40 includes a probe holder 41 and a probe 42. A third through hole 411 is formed at the bottom of the probe holder 41. The probe 42 passes through the third through hole 411 and is confined to the bottom of the probe holder 41. The mounting part 31 has a first receiving groove 312, a second receiving groove 313, and a first through hole 311 connected sequentially from top to bottom. The probe holder 41 is accommodated in the first receiving groove 312, and the bottom of the probe 42 is accommodated in the second receiving groove 313. A locking member abuts against the probe holder 41 from the side of the mounting part 31. With this configuration, when the probe is tilted during installation, the probe 42 is fixed by the probe holder 41, making it easier to replace the probe 42.

[0063] Optionally, in this embodiment, two light sources 10, two light guides 50, and two probes 42 are provided. In other embodiments, one, three, or more can be provided, which is not limited here.

[0064] Optionally, such as Figure 3 As shown, the two light sources 10 are limited and held by the slots of the light source support plate 11. The light source support plate 11 is installed on the lower side of the base 20, and the angled bracket 60 is set at this position to avoid obstruction.

[0065] The following is combined with Figures 1-5 The installation process of this device will be described, such as... Figures 1-5 As shown, first, the light source 10 is placed into the hole of the base 20 from bottom to top. Then, the light source support plate 11 is connected to the lower side of the base 20, so that the light source 10 is clamped and fixed between the base 20 and the light source support plate 11. Then, the first magnetic conductive element 91 is placed into the receiving groove 21, the two light guide columns 50 are installed into the magnetic shielding block 92, the magnetic shielding block 92 is placed on the first magnetic conductive element 91, and the two magnets 93 are placed on both sides of the magnetic shielding block 92. Then, the two second magnetic conductive elements 94 are placed on the upper side of the two magnets 93 respectively. A screw is used to thread the first magnetic conductive element 91 and the magnetic shielding block 92 through the base 20. The screw does not protrude from the lower side of the base 20 on one side. The magnets 93 and the second magnetic conductive elements 94 are fixed by magnetic force. The probe 42 is placed into the probe fixing seat 41 and glued. To prevent shaking, the probe mounting base 41 is then inserted into the mounting part 31 of the movable pressure block 30. A screw is then inserted into the first locking hole 314 and locked to the probe mounting base 41, thereby locking the probe mounting base 41 and the mounting part 31. A groove for accommodating the elastic element 82 is provided on the body 71. The elastic element 82 is installed into the groove. Then, the drive part 812 of the pressing handle 81 is aligned with the elastic element 82. The lever 811 is threadedly connected to the body 71. The mounting part 31 is aligned with the clearance notch 35. The connector 83 passes through the elongated hole 711 and is threadedly connected to the body 71, and is located in the U-shaped groove 8111. Then, screws are used to connect it to the base 20 from top to bottom. Finally, the base 20 is connected to the angle bracket 60. The screws are inserted from the lower side of the upper part 924 of the angle bracket 60.

[0066] When using the oil, place it in a test tube 200 mm higher than the glass tube sleeve, take a certain amount of oil for testing, and finally calculate the number A and size of large particles in 1 ml of oil. Take another measurement after a week or a specified period. If the A value increases or the particle size increases, consider that there is a problem with the engine and the lubricating oil needs to be replaced. If the A value is relatively stable, it means that the machine is operating normally.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An oil particle detection device, characterized in that, include: A light source (10) and a base (20), wherein the light source (10) passes through the base (20) and is configured to emit light in a predetermined direction; A magnetic field assembly (90) and a movable pressure block (30) are provided. The magnetic field assembly (90) is disposed on the upper side of the base (20), and the movable pressure block (30) is disposed on the upper side of the magnetic field assembly (90) and is used to clamp the glass tube sleeve (200) together with the magnetic field assembly (90). The magnetic field assembly (90) is configured to adsorb particles in the oil onto the inner wall of the glass tube sleeve (200). A receiving probe (40) is installed on the movable pressure block (30). The movable pressure block (30) has a first through hole (311) corresponding to the probe (42). The light from the light source (10) can pass through the base (20), the magnetic field component (90), the glass tube sleeve (200), and the first through hole (311) in sequence and be received by the receiving probe (40). The receiving probe (40) is connected to the host computer. The host computer can obtain the number of particles in the oil by the light blocking situation of the light received by the receiving probe (40).

2. The oil particle detection device according to claim 1, characterized in that, The base (20) has a receiving groove (21) extending along a first direction, which is perpendicular to the preset direction. The magnetic field assembly (90) includes: The first magnetic conductive element (91) is disposed at the bottom of the receiving groove (21); A magnetic shielding block (92) extends along the first direction and is disposed on the upper side of the first magnetic conductive element (91); Two magnets (93) are both disposed on the upper side of the first magnetic conductive element (91) and on both sides of the magnetic shielding block (92); Two second magnetic conductive elements (94) are respectively disposed on the upper side of the magnet (93), and the two second magnetic conductive elements (94) are respectively disposed on both sides of the magnetic shielding block (92); The magnetic shielding block (92), the two second magnetic conductive elements (94) and the movable pressure block (30) together form a receiving hole (34), which is used to receive the glass tube sleeve (200) and extends along the first direction.

3. The oil particle detection device according to claim 2, characterized in that, The magnetic shielding block (92) has a second through hole (921), and a light guide post (50) is placed in the second through hole (921). The light guide post (50) extends along the preset direction and is placed between the light source (10) and the receiving probe (40).

4. The oil particle detection device according to claim 2, characterized in that, The magnetic shielding block (92) includes a connected support portion (922), an inclined portion (923), and an upper portion (924). The support portion (922) is placed on the first magnetic conductor (91). The size of the upper portion (924) in the second direction is smaller than that of the support portion (922) in the second direction. The inclined portion (923) has a trapezoidal cross-section and its two ends are respectively connected to the support portion (922) and the upper portion (924). The bottom of the second magnetic conductor (94) is higher than or flush with the connection between the support portion (922) and the inclined portion (923). The upper portion (924) of the second magnetic conductor (94) is not higher than the upper side of the upper portion (924). The side of the second magnetic conductor (94) facing the magnetic shielding block (92) is adapted to the shape of the magnetic shielding block (92). The second direction is perpendicular to the first direction and the preset direction.

5. The oil particle detection device according to any one of claims 1-4, characterized in that, The oil particle detection device also includes an angled frame (60), and the base (20) is installed on the top surface of the angled frame (60). The top surface of the angled frame (60) is inclined relative to the bottom surface so that the oil inlet end of the glass tube sleeve (200) is lower than the oil outlet end of the glass tube sleeve (200).

6. The oil particle detection device according to any one of claims 1-4, characterized in that, The oil particle detection device also includes an upper fixed seat (70), which is connected to the upper side of the base (20). The movable pressure block (30) is elastically connected to the upper fixed seat (70) so that the movable pressure block (30) can clamp or release the glass tube sleeve (200).

7. The oil particle detection device according to claim 6, characterized in that, The oil particle detection device further includes a drive assembly (80), which comprises: The press handle (81) includes a lever (811) and a drive unit (812). The lever (811) is pivotally connected to the side wall of the upper fixed seat (70). The drive unit (812) is set at an angle to the first end of the lever (811) and is partially located on the upper side of the upper fixed seat (70). An elastic element (82) is provided between the upper fixed seat (70) and the drive unit (812). A U-shaped groove (8111) is opened at the other end of the lever (811). The connector (83) has an elongated hole (711) extending along the preset direction on the upper fixed seat (70). The movable pressure block (30) is located on the side of the upper fixed seat (70) away from the lever (811). The connector (83) includes a stop (831) and a connecting part (832). The connecting part (832) passes through the elongated hole (711) and connects to the movable pressure block (30). Part of the connecting part (832) is slidably disposed in the U-shaped groove (8111). The diameter of the stop (831) is greater than the width of the U-shaped groove (8111).

8. The oil particle detection device according to claim 7, characterized in that, The upper fixed seat (70) includes a body (71) and a first guide part (72). The lever (811) and the movable pressure block (30) are respectively disposed on both sides of the body (71). The first guide part (72) is connected to the side of the body (71) facing the movable pressure block (30). The first guide part (72) has a first guide groove (721) along a first direction on the side of the first guide part (72) facing the base (20). Part of the movable pressure block (30) is accommodated in the first guide groove (721). When the movable pressure block (30) presses the glass tube sleeve (200), the movable pressure block (30) and the bottom of the first guide groove (721) are spaced apart.

9. The oil particle detection device according to claim 8, characterized in that, The oil inlet end of the first guide portion (72) is retracted relative to the body (71) to form a clearance notch (35). The movable pressure block (30) includes a mounting portion (31) and a first limiting portion (32) connected along a first direction. The mounting portion (31) is located at the clearance notch (35) and is set higher than the first limiting portion (32). A portion of the first limiting portion (32) can slide in the first guide groove (721). The receiving probe (40) is mounted on the mounting portion (31). At least a portion of the first limiting portion (32) is accommodated in the first guide groove (721).

10. The oil particle detection device according to claim 9, characterized in that, The receiving probe (40) includes a probe holder (41) and a probe (42). The bottom of the probe holder (41) has a third through hole (411). The probe (42) passes through the third through hole (411) and is limited to the bottom of the probe holder (41). The mounting part (31) has a first receiving groove (312), a second receiving groove (313) and the first through hole (311) connected sequentially from top to bottom. The probe holder (41) is accommodated in the first receiving groove (312), and the bottom of the probe (42) is accommodated in the second receiving groove (313). The locking member abuts against the probe holder (41) from the side of the mounting part (31).

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