Liquid particle cleanliness detector

Abstract

This invention discloses a liquid particle cleanliness detector, relating to the field of liquid detection technology. The liquid particle cleanliness detector includes a housing with a cover plate hinged to its outer side. A sensor housing is disposed on the outer side of the housing, with a transmitter fixedly connected to one side and a receiver fixedly connected to the other side. It also includes a connecting pipe, which is fixedly connected to a flow channel in the sensor housing. A fixed circular frame is disposed on the outer side of the housing, and the fixed circular frame is fixedly connected to the bottom of the connecting pipe. A connecting pipe is fixedly connected to the outer side of the fixed circular frame. When the liquid to be detected enters the defoaming mechanism outside the first rotating ring, the defoaming mechanism eliminates bubbles during rotation, allowing the liquid inside the defoaming mechanism to flow into the sensor housing through the connecting pipe for detection. This eliminates bubble interference at the source, effectively avoiding false counting and ensuring the authenticity and accuracy of particle counting and particle size analysis results.

Description

Technical Field

[0001] This invention relates to the field of liquid detection technology, and in particular to a liquid particle cleanliness detector. Background Technology

[0002] An online liquid cleanliness analyzer is an instrument used to detect and analyze various opaque microparticle parameters in transparent liquids, and is an important tool for measuring liquid cleanliness. Its main function is to quickly and accurately monitor changes in particulate matter in liquids to ensure quality or system safety in various scenarios.

[0003] Referring to the patent application CN205229008U, an optical sample cell for a liquid insoluble particle detector using the photoresist method is disclosed. This invention solves the technical problem that the existing method of using multiple layers of stainless steel plates threaded together and sealed with a sealant layer is difficult to achieve the required pressure resistance for online detection. The key point of the technical solution is to adopt a welded structure, in which the test block in the optical sample cell is welded into a single unit and then integrally embedded into the connecting block and welded again to form an optical sample cell for online particle detection. The optical sample cell with this test block configuration can withstand a maximum pressure of up to 400 kg, fully meeting the requirements of online detection.

[0004] As a core device for liquid cleanliness testing, optical particle counters, which commonly employ the optical obscuration method, are susceptible to severe interference from air bubbles in the liquid. When air bubbles pass through a laser beam, they generate electrical signal pulses that are extremely similar to those of solid particles, causing the sensor to miscount and resulting in significantly inflated particle concentration detection results, severely affecting the accuracy and reliability of the data.

[0005] Currently, the industry commonly uses methods such as static sedimentation or offline ultrasonication for defoaming, but these methods are inefficient and cannot meet the needs of online and continuous testing. In addition, the centrifugal force field introduced to achieve efficient defoaming, while effectively separating bubbles, also causes the solid particles to be tested to settle and accumulate on the inner wall of the container. This sedimentation phenomenon makes the samples extracted for subsequent testing unrepresentative, and the particle concentration and particle size distribution are severely distorted, thus causing a technical contradiction between "eliminating bubble interference" and "maintaining the authenticity of particle distribution".

[0006] Therefore, it is necessary to provide a liquid particle cleanliness detector to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a liquid particle cleanliness detector to address the deficiencies of the prior art as described in the background section.

[0008] Based on the above ideas, the present invention provides the following technical solution: a liquid particle cleanliness detector, including a housing, a cover plate hinged to the outside of the housing, a sensor housing disposed on the outside of the housing, a transmitter fixedly connected to one side of the sensor housing, and a receiver fixedly connected to the other side, and further comprising:

[0009] A connecting pipe is fixedly connected to the flow channel of the sensor housing. A fixed circular frame is provided on the outside of the housing. The fixed circular frame is fixedly connected to the bottom of the connecting pipe. A connecting pipe is fixedly connected to the outside of the fixed circular frame.

[0010] The fixed circular frame is provided with a first rotating ring inside, and a second rotating ring is fixedly connected inside the first rotating ring. Two sets of defoaming mechanisms are provided on the outside of the first rotating ring. When the first rotating ring rotates, it drives the defoaming mechanism to rotate so as to achieve bubble separation.

[0011] A connecting valve is fixedly connected to the outside of the connecting pipe, and a cleaning mechanism is provided on the outside of the connecting valve. After each test, the cleaning mechanism flushes the flow channel of the sensor housing.

[0012] As a further aspect of the present invention: a rotating ring is rotatably connected inside the fixed circular frame, a bevel gear disk is fixedly connected inside the fixed circular frame, a gap is provided between the first rotating ring and the second rotating ring, and the first rotating ring and the second rotating ring are rotatably connected to the two sides of the fixed circular frame respectively, and a drive motor is fixedly connected to the outside of the housing, and the output shaft of the drive motor is fixedly connected to the second rotating ring.

[0013] As a further aspect of the present invention: the defoaming mechanism includes a collecting cylinder, one end of which is fitted against the inner wall of the fixed circular frame, the other end of which passes through the first rotating ring and is rotatably connected to the first rotating ring, and a rotating rod is fixedly connected to one end of the collecting cylinder, the rotating rod passing through the second rotating ring and being rotatably connected to the second rotating ring.

[0014] As a further aspect of the present invention: the defoaming mechanism further includes a bevel gear, which is fixedly connected to one end of the rotating rod and meshes with a bevel gear disc. A plurality of breathable membranes are fixedly connected to one end of the collecting cylinder near the first rotating ring for allowing air bubbles to pass through. An air extraction pipe is fixedly connected to the outside of the fixed circular frame, with both ends of the air extraction pipe extending between the first and second rotating rings. The air extraction pipe is fixedly connected to an external air extraction pipe.

[0015] As a further embodiment of the present invention: the cleaning mechanism includes a vertical plate, which is fixedly connected to the top of the sensor housing. A gear is provided on one side of the vertical plate, and a support rod is fixedly connected to one side of the gear. The support rod passes through the vertical plate and is rotatably connected to the vertical plate. A rotating disk is fixedly connected to one end of the support rod, and a pull plate is eccentrically rotatably connected to the outside of the rotating disk. A squeezing rod is fixedly connected to one end of the pull plate.

[0016] As a further aspect of the present invention: the cleaning mechanism further includes a fixed cylinder, which is fixedly connected to the top of the sensor housing. The squeezing rod passes through the inside of the fixed cylinder and is slidably connected to the fixed cylinder. One end of the squeezing rod is in contact with the inner wall of the fixed cylinder. A storage box is fixedly connected to the outside of the sensor housing. A one-way liquid inlet pipe is fixedly connected between the storage box and the fixed cylinder. A one-way liquid outlet pipe is fixedly connected between the fixed cylinder and the connecting valve. An incomplete gear plate is provided on the outside of the fixed circular frame. The motor output shaft is fixedly connected to the incomplete gear plate, and the incomplete gear plate is meshed with a gear.

[0017] As a further aspect of the present invention: a magnetic rod is provided inside the collecting cylinder, a base plate is sleeved on the outside of the collecting cylinder, a first magnetic ring is provided at the top of the collecting cylinder, the first magnetic ring is sleeved on the outside of the collecting cylinder and magnetically attracted to the magnetic rod, a buffer frame is provided outside the first magnetic ring, the buffer frame is fixedly connected to the top of the base plate, a rotating sealing plate is rotatably connected to the top of the buffer frame, the rotating sealing plate is fixedly connected to the first magnetic ring, a buffer plate is fixedly connected to the bottom of the rotating sealing plate, a plurality of buffer grooves are opened on the outside of the buffer plate, the buffer grooves are frustoconical, the buffer plate extends into the inside of the buffer frame, an installation plate is fixedly connected inside the buffer frame, and the inside of the buffer frame is filled with buffer solution.

[0018] As a further aspect of the present invention: a push support plate is fixedly connected to the outer side of the first magnetic ring, a fixing plate is fixedly connected to the inner side of the buffer frame, an elastic element for resetting is fixedly connected between the fixing plate and the push support plate, a second magnetic ring is fixedly connected to the top of the base plate, the second magnetic ring is sleeved on the outer side of the buffer frame, a magnetic ring is fixedly connected to the outer side of the buffer frame, the magnetic ring and the second magnetic ring are magnetically attracted, an electric push rod is fixedly connected to the outer side of the first rotating ring, and the telescopic end of the electric push rod is fixedly connected to the base plate.

[0019] As a further aspect of the present invention: a control panel is provided inside the casing, and an output board and an auxiliary power interface are fixedly connected to the outside of the control panel.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. When the liquid being tested enters the defoaming mechanism outside the first rotating ring, the defoaming mechanism eliminates the bubbles during the rotation process as the first rotating ring rotates. This allows the liquid inside the defoaming mechanism to flow into the sensor housing through the connecting pipe for detection, eliminating bubble interference at the source, effectively avoiding false counting, and ensuring the authenticity and accuracy of particle counting and particle size analysis results.

[0022] 2. This solution achieves active, rapid, and selective removal of air bubbles in liquids while ensuring zero loss of particulate matter throughout the process, providing high-quality, interference-free samples for subsequent optical detection and fundamentally improving the accuracy of particle counting data.

[0023] 3. The automated delayed stirring mechanism ensures thorough mixing of particles and liquid without requiring additional power or control, effectively avoiding detection errors caused by particle accumulation. Combined with the axial movement function driven by an electric push rod, the mixing effect is further enhanced, ultimately providing the optical sensor with a representative sample that is bubble-free and has a uniform particle distribution, ensuring the accuracy and reliability of the detection data from the source.

[0024] 4. The purified liquid inside the storage tank is drawn into the fixed cylinder and delivered to the connecting valve through the one-way outlet pipe. The purified liquid then passes through the flow channel inside the bottom plate. This automatic rinsing process effectively removes any particles that may remain from the previous test, perfectly avoiding cross-contamination and data distortion, and providing a reliable guarantee for ensuring the accuracy of each liquid cleanliness test. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the casing structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the fixed circular frame structure of the present invention;

[0029] Figure 4 This is the present invention. Figure 3 A magnified structural diagram of part A;

[0030] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed circular frame of the present invention;

[0031] Figure 6 This is a schematic diagram of the bevel gear disk structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the incomplete toothed disk structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the collecting cylinder structure of the present invention;

[0034] Figure 9 This is a schematic cross-sectional view of the collecting cylinder of the present invention;

[0035] Figure 10 This is a schematic diagram of the rotating sealing plate structure of the present invention;

[0036] Figure 11 This is a schematic diagram of the buffer frame structure of the present invention;

[0037] Figure 12 This is the present invention. Figure 11 A magnified structural diagram of part B.

[0038] In the diagram: 1. Housing; 101. Cover plate; 102. Output board; 103. Auxiliary power interface; 104. Display screen; 2. Sensor housing; 201. Transmitter; 202. Receiver; 203. Connecting pipe; 3. Fixed circular frame; 300. Rotating ring; 301. Connecting pipe; 302. First rotating ring; 303. Second rotating ring; 304. Bevel gear disk; 4. Collection cylinder; 401. Breathable membrane; 402. Rotating rod; 403. Bevel gear; 5. Base plate; 500. Push support plate; 501. First magnetic ring; 5 02. Magnetic rod; 503. Rotating sealing plate; 504. Buffer frame; 505. Elastic element; 506. Fixing plate; 507. Buffer plate; 5071. Buffer groove; 508. Mounting plate; 509. Second magnetic ring; 510. Electric push rod; 701. Vertical plate; 702. Gear; 703. Rotating disk; 704. Pull plate; 705. Fixing cylinder; 706. Storage box; 707. One-way liquid outlet pipe; 708. One-way liquid inlet pipe; 709. Connecting valve; 710. Extrusion rod; 801. Air extraction pipe; 9. Incomplete gear disc. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0040] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0041] like Figures 1 to 12 As shown, the liquid particle cleanliness detector includes the following embodiments:

[0042] Example 1: Includes a housing 1, with a cover plate 101 hinged to the outside of the housing 1. A display screen 104 is disposed on the outside of the cover plate 101. A sensor housing 2 is disposed on the outside of the housing 1. A transmitter 201 is fixedly connected to one side of the sensor housing 2, and a receiver 202 is fixedly connected to the other side. A control panel is disposed inside the housing 1. An output board 102 and an auxiliary power interface 103 are fixedly connected to the outside of the control panel. Also includes:

[0043] Connecting pipe 203 is fixedly connected to the flow channel of sensor housing 2. A fixed circular frame 3 is provided on the outside of housing 1. The fixed circular frame 3 is fixedly connected to the bottom of connecting pipe 203. A connecting pipe 301 is fixedly connected to the outside of fixed circular frame 3.

[0044] The fixed circular frame 3 is provided with a first rotating ring 302 inside, and a second rotating ring 303 is fixedly connected inside the first rotating ring 302. Two sets of defoaming mechanisms are provided on the outside of the first rotating ring 302. When the first rotating ring 302 rotates, it drives the defoaming mechanism to rotate so as to achieve bubble separation.

[0045] A connecting valve 709 is fixedly connected to the outside of the connecting pipe 203. A cleaning mechanism is provided on the outside of the connecting valve 709. After each test, the cleaning mechanism flushes the flow channel of the sensor housing 2.

[0046] In specific implementation, the sensor housing 2 contains two high-transmittance windows made of sapphire material, which are scratch-resistant and corrosion-resistant, allowing the laser to penetrate the windows and form a stable beam. The flow channel between the windows has a uniform size of 750μm×750μm. When liquid passes through the flow channel via the connecting pipe 203, the sample liquid flows through the window, ensuring that particles can pass vertically through the laser beam. The transmitter 201 emits a 780nm or red laser. After optical structure calibration, the beam passes through the sapphire window, forming a stable beam that vertically illuminates the receiver 202. When there are no particles, the light intensity received by the detector is constant, and a stable reference voltage signal is output. Sample flow and particle obstruction: the liquid sample to be tested flows through the flow channel at a constant flow rate, and the particles in the sample pass through the laser beam synchronously with the liquid. Each particle will obstruct part of the laser, causing the light intensity illuminating the detector to weaken momentarily. The overall steps are: beam emission → particle obstruction → signal change → data conversion. This is existing technology and will not be further elaborated here.

[0047] When liquid flows through a flow channel, the presence of air bubbles in the liquid affects the particle detection device. Based on the principle of light obstruction, the device works by blocking light when any particle, whether solid or a bubble, passes through the laser beam, causing a momentary decrease in the light intensity received by the detector. The sensor records this "light intensity reduction signal." Solid particles: blocking light generates an electrical pulse. The amplitude of the pulse is usually proportional to the particle's projected area, i.e., its diameter. Air bubbles: similarly refract and scatter light, causing a decrease in light intensity and generating an electrical pulse that is very similar to, or even identical to, that of a solid particle.

[0048] Therefore, when bubbles in the liquid pass through the laser beam, they also block the light, generating electrical signal pulses very similar to those of solid particles. This causes the sensor to miscount bubbles as particles, resulting in a significantly inflated particle count and severely interfering with the accuracy of the results. Therefore, this solution involves setting a fixed circular frame 3 on the top of the sensor housing 2, connecting the rotating ring 300 on the fixed circular frame 3 to the pipe of the detected liquid, and connecting the bottom of the fixed circular frame 3 to the flow channel of the sensor housing 2 via a connecting pipe 203. When the detected liquid enters the defoaming mechanism outside the first rotating ring 302, the defoaming mechanism eliminates the bubbles during rotation. The liquid inside the defoaming mechanism flows into the sensor housing 2 through the connecting pipe 203 for detection, eliminating bubble interference at the source, effectively avoiding false counting, and ensuring the authenticity and accuracy of particle counting and particle size analysis results.

[0049] Example 2: A rotating ring 300 is rotatably connected inside the fixed circular frame 3, and a bevel gear disk 304 is fixedly connected inside the fixed circular frame 3. A gap is provided between the first rotating ring 302 and the second rotating ring 303, and the first rotating ring 302 and the second rotating ring 303 are rotatably connected to the two sides of the fixed circular frame 3 respectively. A drive motor is fixedly connected to the outside of the housing 1, and the output shaft of the drive motor is fixedly connected to the second rotating ring 303.

[0050] The defoaming mechanism includes a collection cylinder 4, one end of which is attached to the inner wall of the fixed circular frame 3, and the other end of which passes through the first rotating ring 302 and is rotatably connected to the first rotating ring 302. A rotating rod 402 is fixedly connected to one end of the collection cylinder 4, and the rotating rod 402 passes through the second rotating ring 303 and is rotatably connected to the second rotating ring 303.

[0051] The defoaming mechanism also includes a bevel gear 403, which is fixedly connected to one end of the rotating rod 402. The bevel gear 403 meshes with the bevel gear disk 304. A plurality of breathable membranes 401 are fixedly connected to one end of the collecting cylinder 4 near the first rotating ring 302 for allowing air bubbles to pass through. An air extraction pipe 801 is fixedly connected to the outside of the fixed circular frame 3. The two ends of the air extraction pipe 801 extend between the first rotating ring 302 and the second rotating ring 303. The air extraction pipe 801 is fixedly connected to an external air extraction pipe.

[0052] In practice, when the connecting pipe 301 is connected to one end of the collecting cylinder 4, the liquid enters the collecting cylinder 4. Then, a drive motor drives the first rotating ring 302 and the second rotating ring 303 to rotate, causing the first rotating ring 302 to rotate the collecting cylinder 4 together. A rotating rod 402 is fixedly connected to the bottom of the collecting cylinder 4. The bevel gear 403 on the rotating rod 402 meshes with the bevel gear disc 304, thereby driving the collecting cylinder 4 to rotate. The collecting cylinder 4 rotates on its own axis as it rotates with the first rotating ring 302, causing the liquid inside the collecting cylinder 4 to undergo centrifugal rotation. As the bubbles move, they gather towards the central axis of the top of the collecting cylinder 4 under the action of centrifugal force. At the same time, multiple breathable membranes 401 are provided at one end of the collecting cylinder 4. The breathable membranes 401 are made of hydrophobic material and their pore size is smaller than that of particulate matter, allowing only gas to pass through. The bubbles gather at the breathable membranes 401. Since the breathable membranes 401 are located between the first rotating ring 302 and the second rotating ring 303, the space between the first rotating ring 302 and the second rotating ring 303 is evacuated through the suction pipe 801 to extract the bubbles, thereby eliminating the bubbles in the liquid to be tested.

[0053] In summary, the defoaming mechanism operates as follows: After the connecting pipe 301 is connected to the collection cylinder 4, liquid is injected into it. The drive motor starts, causing the first rotating ring 302 and the second rotating ring 303 to revolve, and then, through the meshing of the bevel gear 403 and the fixed bevel gear disk 304, each collection cylinder 4 is driven to rotate at high speed simultaneously.

[0054] Under the strong centrifugal force, the liquid in the collecting cylinder 4 rapidly pushes the least dense bubbles towards the rotating central axis at the top of the collecting cylinder 4. Here, a breathable membrane 401 made of hydrophobic material forms a selective barrier—its pore size allows gas to pass through but completely blocks liquid and particulate matter. The bubbles that have accumulated here are rapidly extracted from the system under the continuous vacuum negative pressure applied to the rotating ring chamber by the suction pipe 801.

[0055] The above solution achieves active, rapid, and selective removal of air bubbles in liquids while ensuring zero loss of particulate matter throughout the process. This provides high-quality, interference-free samples for subsequent optical detection, fundamentally improving the accuracy of particle counting data.

[0056] Example 3: A magnetic rod 502 is installed inside the collection cylinder 4, and a base plate 5 is fitted on the outside of the collection cylinder 4. A first magnetic ring 501 is installed on the top of the collection cylinder 4. The first magnetic ring 501 is fitted on the outside of the collection cylinder 4 and magnetically attracted to the magnetic rod 502. A buffer frame 504 is installed outside the first magnetic ring 501. The buffer frame 504 is fixedly connected to the top of the base plate 5. A rotating sealing plate 503 is rotatably connected to the top of the buffer frame 504. The rotating sealing plate 503 is fixedly connected to the first magnetic ring 501. A buffer plate 507 is fixedly connected to the bottom of the rotating sealing plate 503. Multiple buffer grooves 5071 are opened on the outside of the buffer plate 507. The buffer grooves 5071 are frustoconical. The buffer plate 507 extends into the interior of the buffer frame 504. An installation plate 508 is fixedly connected inside the buffer frame 504. The interior of the buffer frame 504 is filled with buffer solution.

[0057] A push support plate 500 is fixedly connected to the outer side of the first magnetic ring 501. A fixing plate 506 is fixedly connected to the inner side of the buffer frame 504. An elastic element 505 for resetting is fixedly connected between the fixing plate 506 and the push support plate 500. A second magnetic ring 509 is fixedly connected to the top of the base plate 5. The second magnetic ring 509 is sleeved on the outer side of the buffer frame 504. A magnetic ring is fixedly connected to the outer side of the buffer frame 504. The magnetic ring and the second magnetic ring 509 are magnetically attracted to each other. An electric push rod 510 is fixedly connected to the outer side of the first rotating ring 302. The telescopic end of the electric push rod 510 is fixedly connected to the base plate 5.

[0058] In practical implementation, when the liquid separates the gas and particles through centrifugation, a large number of particles will concentrate on the inner wall of the collection cylinder 4. During the detection process, a large number of particles may accumulate. Therefore, in this solution, a magnetic rod 502 is installed inside the collection cylinder 4, and a first magnetic ring 501 is installed on the outside of the collection cylinder 4. The first magnetic ring 501 and the magnetic rod 502 are magnetically attracted. When the collection cylinder 4 rotates, the magnetic rod 502 rotates together. The magnetic rod 502 can improve the centrifugal rotation of the liquid inside the collection cylinder 4. The magnetic rod 502 drives the first magnetic ring 501 to rotate through magnetic attraction. A buffer frame 504 is installed on the top of the bottom plate 5, and a magnetic ring is installed on the outside of the buffer frame 504. A second magnetic ring 509 is magnetically attracted to the magnetic ring, so the buffer frame 504 remains relatively stationary. When the first magnetic ring 501 rotates, it drives the electric push rod 510 to rotate. The electric push rod 510 drives the buffer plate 507 to rotate inside the buffer frame 504. The liquid inside the buffer frame 504 passes through the buffer groove 5071. Liquid passes through the large end of the buffer tank 5071 via the punch plate 507, simultaneously pushing the support plate 500 to compress the elastic element 505. When the elastic element 505 is compressed to a certain extent, it pushes the buffer frame 504 to rotate. After separation, the collecting cylinder 4 stops rotating, and the magnetic ring on the outside of the buffer frame 504 magnetically attracts the second magnetic ring 509. The compressed elastic element 505 pushes the support plate 500 to reset, while the liquid inside the buffer frame 504 blocks the buffer plate 507, ensuring that the first magnetic ring 501 rotates slowly. The first magnetic ring 501 drives the magnetic rod 502 to rotate inside the collecting cylinder 4, stirring the liquid flow inside the collecting cylinder 4 and mixing the particles with the liquid to avoid excessive accumulation that could affect the accuracy of the detection. At the same time, the electric push rod 510 can drive the bottom plate 5 to descend, and then the bottom plate 5 moves outside the collecting cylinder 4, causing the first magnetic ring 501 and the magnetic rod 502 to move as well, thus making the particles inside the collecting cylinder 4 more thoroughly mixed.

[0059] The working principle can be divided into:

[0060] 1. Energy storage and damping buffering during centrifugation

[0061] During the centrifugal defoaming stage, the collecting cylinder 4 rotates at high speed, and the magnetic rod 502 inside it rotates accordingly.

[0062] Through magnetic attraction, the magnetic rod 502 drives the first magnetic ring 501 on the outside of the collection tube 4 to attempt to rotate synchronously.

[0063] However, the buffer system, which is connected to the first magnetic ring 501 by pushing the support plate 500 and the elastic element 505, is kept relatively stationary by the attraction between the second magnetic ring 509 and the magnetic ring on the buffer frame 504.

[0064] Therefore, the rotational tendency of the first magnetic coil 501 is transformed into compression of the elastic element 505, storing rotational kinetic energy as elastic potential energy. At the same time, the buffer plate 507 fixed to the first magnetic coil 501 rotates within the buffer frame 504 filled with liquid. When the liquid flows through the buffer groove 5071 on it, a hydraulic damping effect is generated, ensuring the smooth and controllable energy storage process and avoiding violent impacts.

[0065] 2. Automatic gentle resuspension after centrifugation stops

[0066] Once the centrifugal drive stops, the collection cylinder 4 will no longer rotate.

[0067] At this time, the compressed elastic element 505 begins to release the stored potential energy, pushing the support plate 500 in the opposite direction, thereby driving the first magnetic ring 501 to rotate slowly.

[0068] The first magnetic ring 501, through magnetic coupling, drives the magnetic rod 502 inside the collecting cylinder 4 to gently stir the liquid.

[0069] The continuous damping effect of the liquid in the buffer frame 504 on the buffer plate 507 ensures that the stirring is slow and gentle, effectively resuspending the deposited particles while minimizing the generation of new bubbles.

[0070] 3. Axial stirring to enhance mixing effect

[0071] To further improve the mixing uniformity, the electric push rod 510 can drive the base plate 5 and the entire magnetic stirring mechanism on it to move axially along the collecting cylinder 4.

[0072] This upgrades the stirring trajectory of the magnetic rod 502 from a fixed-plane rotation to a spiral motion covering the entire depth of the collection cylinder. This more effectively stirs up all deposited particles at the bottom, achieving thorough and uniform mixing throughout the entire cylinder. The automated delayed stirring mechanism ensures complete mixing of particles and liquid without the need for additional power or control, effectively avoiding detection errors caused by particle accumulation. Combined with the axial movement function driven by the electric push rod, the mixing effect is further enhanced, ultimately providing the optical sensor with a representative sample free of bubbles and with uniform particle distribution, fundamentally ensuring the accuracy and reliability of the detection data.

[0073] Example 4: The cleaning mechanism includes a vertical plate 701, which is fixedly connected to the top of the sensor housing 2. A gear 702 is provided on one side of the vertical plate 701, and a support rod is fixedly connected to one side of the gear 702. The support rod passes through the vertical plate 701 and is rotatably connected to the vertical plate 701. A rotating disk 703 is fixedly connected to one end of the support rod. A pull plate 704 is eccentrically rotatably connected to the outside of the rotating disk 703. A pressing rod 710 is fixedly connected to one end of the pull plate 704.

[0074] The cleaning mechanism also includes a fixed cylinder 705, which is fixedly connected to the top of the sensor housing 2. A squeezing rod 710 passes through the inside of the fixed cylinder 705 and is slidably connected to the fixed cylinder 705. One end of the squeezing rod 710 is attached to the inner wall of the fixed cylinder 705. A storage box 706 is fixedly connected to the outside of the sensor housing 2. A one-way liquid inlet pipe 708 is fixedly connected between the storage box 706 and the fixed cylinder 705. A one-way liquid outlet pipe 707 is fixedly connected between the fixed cylinder 705 and the connecting valve 709. An incomplete gear disk 9 is provided on the outside of the fixed circular frame 3. The motor output shaft is fixedly connected to the incomplete gear disk 9. The incomplete gear disk 9 is meshed with the gear 702.

[0075] In practice, when the defoamed liquid in the collection cylinder 4 passes through the connecting pipe 203 and the bottom plate 5 for testing, and when the collection cylinder 4 is switched, the incomplete gear disk 9 of the drive motor output shaft rotates together. The teeth on the incomplete gear disk 9 mesh with the gear 702, and the gear 702 drives the rotating disk 703 to rotate. The rotating disk 703 pulls the squeezing rod 710 through the pull plate 704 to move back and forth inside the fixed cylinder 705, so that the pure liquid inside the storage tank 706 is drawn into the fixed cylinder 705 and delivered to the connecting valve 709 through the one-way liquid outlet pipe 707. The pure liquid passes through the flow groove inside the bottom plate 5. This automatic rinsing process can effectively remove any particles that may remain from the previous test, perfectly avoiding cross-contamination and data distortion, and providing a reliable guarantee for ensuring the accuracy of each liquid cleanliness test.

[0076] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0077] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A liquid particle cleanliness detector, comprising a housing (1), a cover plate (101) hinged to the outside of the housing (1), a sensor housing (2) disposed on the outside of the housing (1), a transmitter (201) fixedly connected to one side of the sensor housing (2), and a receiver (202) fixedly connected to the other side, characterized in that, Also includes: The connecting pipe (203) is fixedly connected to the flow channel of the sensor housing (2). A fixed circular frame (3) is provided on the outside of the housing (1). The fixed circular frame (3) is fixedly connected to the bottom of the connecting pipe (203). A connecting pipe (301) is fixedly connected on the outside of the fixed circular frame (3). The fixed circular frame (3) is provided with a first rotating ring (302) inside, and a second rotating ring (303) is fixedly connected inside the first rotating ring (302). Two sets of defoaming mechanisms are provided on the outside of the first rotating ring (302). When the first rotating ring (302) rotates, it drives the defoaming mechanism to rotate so as to achieve bubble separation. A connecting valve (709) is fixedly connected to the outside of the connecting pipe (203). A cleaning mechanism is provided on the outside of the connecting valve (709). After each test, the cleaning mechanism flushes the flow channel of the sensor housing (2). The fixed circular frame (3) is rotatably connected to a rotating ring (300), and the fixed circular frame (3) is fixedly connected to a bevel gear disk (304). A gap is provided between the first rotating ring (302) and the second rotating ring (303), and the first rotating ring (302) and the second rotating ring (303) are rotatably connected to both sides of the fixed circular frame (3). A drive motor is fixedly connected to the outside of the housing (1), and the output shaft of the drive motor is fixedly connected to the second rotating ring (303). The defoaming mechanism includes a collection cylinder (4), one end of which is attached to the inner wall of the fixed circular frame (3), and the other end of which passes through the first rotating ring (302) and is rotatably connected to the first rotating ring (302). A rotating rod (402) is fixedly connected to one end of the collection cylinder (4), and the rotating rod (402) passes through the second rotating ring (303) and is rotatably connected to the second rotating ring (303). The defoaming mechanism also includes a bevel gear (403), which is fixedly connected to one end of the rotating rod (402). The bevel gear (403) meshes with the bevel gear disk (304). A plurality of breathable membranes (401) are fixedly connected to one end of the collecting cylinder (4) near the first rotating ring (302) for allowing air bubbles to pass through. An air extraction pipe (801) is fixedly connected to the outside of the fixed circular frame (3). The two ends of the air extraction pipe (801) extend between the first rotating ring (302) and the second rotating ring (303). The air extraction pipe (801) is fixedly connected to an external air extraction pipe.

2. The liquid particle cleanliness detector according to claim 1, characterized in that: The cleaning mechanism includes a vertical plate (701), which is fixedly connected to the top of the sensor housing (2). A gear (702) is provided on one side of the vertical plate (701), and a support rod is fixedly connected to one side of the gear (702). The support rod passes through the vertical plate (701) and is rotatably connected to the vertical plate (701). A rotating disk (703) is fixedly connected to one end of the support rod. A pull plate (704) is eccentrically rotatably connected to the outside of the rotating disk (703). A pressing rod (710) is fixedly connected to one end of the pull plate (704). The cleaning mechanism also includes a fixed cylinder (705), which is fixedly connected to the top of the sensor housing (2). The pressing rod... (710) penetrates the interior of the fixed cylinder (705) and is slidably connected to the fixed cylinder (705). One end of the extrusion rod (710) is attached to the inner wall of the fixed cylinder (705). A storage box (706) is fixedly connected to the outside of the sensor housing (2). A one-way liquid inlet pipe (708) is fixedly connected between the storage box (706) and the fixed cylinder (705). A one-way liquid outlet pipe (707) is fixedly connected between the fixed cylinder (705) and the connecting valve (709). An incomplete gear plate (9) is provided on the outside of the fixed circular frame (3). The motor output shaft is fixedly connected to the incomplete gear plate (9). The incomplete gear plate (9) is meshed with the gear (702).

3. The liquid particle cleanliness detector according to claim 2, characterized in that: The collecting cylinder (4) is equipped with a magnetic rod (502) inside. A base plate (5) is fitted on the outside of the collecting cylinder (4). A first magnetic ring (501) is installed on the top of the collecting cylinder (4). The first magnetic ring (501) is fitted on the outside of the collecting cylinder (4) and magnetically attracted to the magnetic rod (502). A buffer frame (504) is installed on the outside of the first magnetic ring (501). The buffer frame (504) is fixedly connected to the top of the base plate (5). A rotating sealing plate (503) is rotatably connected to the top of the buffer frame (504). The rotating sealing plate (503) is fixedly connected to the first magnetic ring (501). A buffer plate (507) is fixedly connected to the bottom of the rotating sealing plate (503). Multiple buffer grooves (5071) are opened on the outside of the buffer plate (507). The buffer grooves (5071) are frustoconical. The buffer plate (507) extends to the buffer frame (502). 4) Inside, a mounting plate (508) is fixedly connected inside the buffer frame (504), and the buffer frame (504) is filled with buffer solution. A push support plate (500) is fixedly connected to the outside of the first magnetic ring (501). A fixing plate (506) is fixedly connected to the inside of the buffer frame (504). An elastic element (505) for resetting is fixedly connected between the fixing plate (506) and the push support plate (500). A second magnetic ring (509) is fixedly connected to the top of the base plate (5). The second magnetic ring (509) is sleeved on the outside of the buffer frame (504). A magnetic ring is fixedly connected to the outside of the buffer frame (504). The magnetic ring and the second magnetic ring (509) are magnetically attracted. An electric push rod (510) is fixedly connected to the outside of the first rotating ring (302). The telescopic end of the electric push rod (510) is fixedly connected to the base plate (5).

4. The liquid particle cleanliness detector according to claim 1, characterized in that: The housing (1) is equipped with a control panel inside, and an output board (102) and an auxiliary power interface (103) are fixedly connected to the outside of the control panel.

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