Liquid particle cleanliness detector

Abstract

The invention discloses a liquid particle cleanliness detector, and relates to the technical field of liquid detection.The liquid particle cleanliness detector comprises a machine shell, a cover plate is hinged to the outer side of the machine shell, a sensor shell is arranged on the outer side of the machine shell, an emitter is fixedly connected to one side of the sensor shell, and a receiver is fixedly connected to the other side of the sensor shell; the connecting pipe is fixedly communicated with the circulation channel of the sensor shell, a fixed round frame is arranged on the outer side of the machine shell, the fixed round frame is fixedly communicated with the bottom of the connecting pipe, and the outer side of the fixed round frame is fixedly communicated with a butt joint pipe; when detected liquid enters the defoaming mechanism on the outer side of the first rotating ring and the first rotating ring rotates, the defoaming mechanism eliminates bubbles in the rotating process, so that the liquid in the defoaming mechanism flows into the sensor shell through the connecting pipe to be detected, bubble interference is eliminated from the source, mistaken counting is effectively avoided, and the detection accuracy is improved. And the authenticity and accuracy of particle counting and particle size analysis results are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid detection, in particular to a liquid particle cleanliness detector. BACKGROUND

[0002] The liquid online cleanliness analyzer is an instrument for detecting and analyzing various non-transparent micro-particle indicators in a transparent liquid, and is an important tool for detecting liquid cleanliness. Its main function is to quickly and accurately monitor the changes of particles in the liquid to ensure the quality or system safety of various scenes.

[0003] Referring to the optical sample cell of the liquid insoluble particle detector for the light resistance method disclosed in the patent application with the publication number CN205229008U, the technical problem that the multi-layer stainless steel plate threaded splicing and sealed by the sealing adhesive layer cannot reach the pressure value during online detection is solved. The technical solution is to use a welded forming structure, the test block in the optical sample cell is integrated by welding, and the optical sample cell with the test block is embedded into the connecting block and welded again to form an optical sample cell for the particle online detection device. The optical sample cell with the test block has a maximum pressure capacity of 400kg, which fully meets the needs of online detection.

[0004] As the core equipment for liquid cleanliness detection, the optical particle counter generally uses the light resistance method principle which is easily interfered by bubbles in the liquid. When the bubbles pass through the laser beam, they will generate an electrical signal pulse similar to solid particles, causing the sensor to miscount, resulting in a significantly high particle concentration detection result, which seriously affects the accuracy and reliability of the data.

[0005] At present, the industry often uses static settling or offline ultrasonic methods for defoaming, but these methods are low in efficiency and cannot meet the needs of online and continuous detection. In addition, the centrifugal field introduced to achieve efficient defoaming can effectively separate the bubbles, but it will also cause the measured solid particles to be deposited and enriched on the inner wall of the container. This deposition phenomenon makes the subsequent extracted sample lose its representativeness, and the particle concentration and particle size distribution are severely distorted, thereby causing the 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 technical problems. SUMMARY

[0007] The purpose of the present application is to provide a liquid particle cleanliness detector to solve the problems of the prior art mentioned in the background.

[0008] Based on the above idea, the present application provides the following technical scheme: liquid particle cleanliness detector, including the shell, the shell outside hinged with the cover plate, the shell outside is provided with the sensor shell, the sensor shell one side fixedly connected with the transmitter, the other side fixedly connected with the receiver, still includes: Connecting pipe, connecting pipe and sensor shell flow passage fixed communication, the shell outside is provided with fixed round frame, fixed round frame and connecting pipe bottom fixed communication, fixed round frame outside fixed communication has the butt joint pipe; The first rotating ring is internally fixedly connected with the second rotating ring, the first rotating ring is provided with two groups of defoaming mechanisms outside, when the first rotating ring rotates, drives the defoaming mechanism to rotate to realize bubble separation; The connecting pipe outside is fixedly connected with the communication valve, the communication valve outside is provided with cleaning mechanism, after each detection is completed, the cleaning mechanism is washed to the flow passage of sensor shell.

[0009] As a further scheme of the application: the fixed round frame is rotatably connected with a rotating ring inside, the fixed round frame is fixedly connected with a bevel gear disc inside, a gap is arranged 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 round frame, a driving motor is fixedly connected to the outside of the shell, and an output shaft of the driving motor is fixedly connected to the second rotating ring.

[0010] As a further scheme of the application: the defoaming mechanism includes a collecting cylinder, one end of the collecting cylinder is attached to the inner wall of the fixed round frame, the other end of the collecting cylinder penetrates through the first rotating ring and is rotatably connected to the first rotating ring, one end of the collecting cylinder is fixedly connected with a rotating rod, and the rotating rod penetrates through the second rotating ring and is rotatably connected to the second rotating ring.

[0011] As a further scheme of the application: the defoaming mechanism further includes a bevel gear, the bevel gear is fixedly connected to one end of the rotating rod, the bevel gear is meshingly connected with the bevel gear disc, a plurality of air permeable membranes are fixedly connected to one end of the collecting cylinder close to the first rotating ring for bubbles to pass through, a suction pipe is fixedly connected to the outside of the fixed round frame, and the suction pipe extends between the first rotating ring and the second rotating ring at both ends, and the suction pipe is fixedly connected with an external suction pipeline.

[0012] As a further scheme of the application: the cleaning mechanism includes a vertical plate, the vertical plate is fixedly connected to the top of the sensor shell, one side of the vertical plate is provided with a gear, one side of the gear is fixedly connected with a support rod, the support rod penetrates through the vertical plate and is rotatably connected to the vertical plate, one end of the support rod is fixedly connected with a rotating disc, the rotating disc is eccentrically rotatably connected with a pull plate outside, and one end of the pull plate is fixedly connected with an extrusion rod.

[0013] As a further scheme of the present application: the cleaning mechanism further comprises a fixed cylinder fixedly connected to the top of the sensor shell, the extrusion rod penetrates through the inside of the fixed cylinder and is in sliding connection with the fixed cylinder, one end of the extrusion rod is attached to the inner wall of the fixed cylinder, a storage box is fixedly connected to the outside of the sensor shell, 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 communication valve, an incomplete toothed disc is arranged on the outside of the fixed cylinder, the motor output shaft is fixedly connected with the incomplete toothed disc, and the incomplete toothed disc is in meshing connection with the gear.

[0014] As a further scheme of the present application: the collecting cylinder is internally provided with a magnetic rod, the outside of the collecting cylinder is sleeved with a bottom plate, the top of the collecting cylinder is provided with a first magnetic ring, the first magnetic ring is sleeved on the outside of the collecting cylinder and is magnetically adsorbed with the magnetic rod, the outside of the first magnetic ring is provided with a buffer frame, the buffer frame is fixedly connected to the top of the bottom plate, the top of the buffer frame is rotatably connected with a rotating sealing plate, the rotating sealing plate is fixedly connected with the first magnetic ring, the bottom of the rotating sealing plate is fixedly connected with a buffer plate, a plurality of buffer grooves are formed in the outside of the buffer plate, the buffer grooves are in the shape of a circular truncated cone, the buffer plate extends into the inside of the buffer frame, the inside of the buffer frame is fixedly connected with a mounting plate, and the inside of the buffer frame is filled with a buffer solution.

[0015] As a further scheme of the present application: the first magnetic ring is fixedly connected with a pushing branch plate on the outside, the inside of the buffer frame is fixedly connected with a fixed plate, an elastic member for resetting is fixedly connected between the fixed plate and the pushing branch plate, the top of the bottom plate is fixedly connected with a second magnetic ring, the second magnetic ring is sleeved on the outside of the buffer frame, the outside of the buffer frame is fixedly connected with a magnetic ring, the magnetic ring is magnetically adsorbed with the second magnetic ring, the first rotating ring is fixedly connected with an electric push rod on the outside, and the telescopic end of the electric push rod is fixedly connected with the bottom plate.

[0016] As a further scheme of the present application: the inside of the shell is provided with a control panel, the outside of the control panel is fixedly connected with an output board card and an auxiliary power supply interface.

[0017] Compared with the prior art, the present application has the following beneficial effects: 1. When the detected liquid enters the defoaming mechanism on the outside of the first rotating ring, the defoaming mechanism eliminates the bubbles in the rotating process when the first rotating ring rotates, so that the liquid in the defoaming mechanism flows into the inside of the sensor shell through the connecting pipe for detection, thereby eliminating the bubble interference from the source and effectively avoiding the false counting, and ensuring the authenticity and accuracy of the particle counting and particle size analysis results.

[0018] 2. This scheme actively, quickly and selectively removes the bubbles in the liquid, ensures zero loss of particulate matter in the whole process, provides a high-quality sample without interference for subsequent optical detection, and fundamentally improves the accuracy of the particle counting data.

[0019] 3. The automatic delay stirring mechanism ensures the sufficient mixing of particles and liquid without additional power and control, effectively avoiding the detection error caused by particle accumulation. Combined with the axial movement function driven by the electric push rod, the mixing effect is further enhanced, ultimately providing a representative sample without bubbles and uniform particle distribution for the optical sensor, and ensuring the accuracy and reliability of the detection data from the root.

[0020] 4. The pure liquid in the storage tank is drawn into the fixed cylinder, and is transported to the communication valve through the one-way liquid outlet pipe, so that the pure liquid passes through the flow-through groove inside the bottom plate. This automatic flushing process can effectively remove the particles that may be left over from the previous detection, perfectly avoiding cross contamination and data distortion, and providing a reliable guarantee for the accuracy of each liquid cleanliness detection. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below in conjunction with the drawings and examples.

[0022] Figure 1 is a schematic diagram of the overall structure of the application; Figure 2 is a schematic diagram of the shell structure of the application; Figure 3 is a schematic diagram of the fixed circular frame structure of the application; Figure 4 is a schematic diagram of the A part of the application; Figure 3 Figure 5 is a schematic diagram of the cross-sectional structure of the fixed circular frame of the application; Figure 6 is a schematic diagram of the bevel gear disc structure of the application; Figure 7 is a schematic diagram of the incomplete tooth disc structure of the application; Figure 8 is a schematic diagram of the collection cylinder structure of the application; Figure 9 is a schematic diagram of the cross-sectional structure of the collection cylinder of the application; Figure 10 is a schematic diagram of the rotating sealing plate structure of the application; Figure 11 is a schematic diagram of the buffer frame structure of the application; Figure 12 is a schematic diagram of the B part of the application; Figure 11

[0023] ​​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

[0024] 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.

[0025] 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.

[0026] like Figures 1 to 12 As shown, the liquid particle cleanliness detector includes the following embodiments: 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: 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. The first rotating ring 302 is internally fixedly connected with the second rotating ring 303, and two groups of defoaming mechanisms are arranged on the outer side of the first rotating ring 302; when the first rotating ring 302 rotates, the defoaming mechanisms are driven to rotate to realize bubble separation. The connecting pipe 203 is fixedly connected with the communication valve 709 on the outer side, and the cleaning mechanism is arranged on the outer side of the communication valve 709; after each detection is completed, the cleaning mechanism flushes the flow channel of the sensor shell 2.

[0027] In specific implementation, the two high-transmittance windows in the sensor shell 2 are both made of sapphire material, are scratch-resistant and corrosion-resistant, and can be penetrated by laser to form a stable light beam; the flow-through grooves between the windows are uniformly sized at 750*750*mu m; when liquid passes through the flow-through grooves through the connecting pipe 203, sample liquid flows through the windows, so that particulate matter can vertically pass through the laser beam; the emitter 201 emits 780nm or red laser, the light beam is calibrated through the optical structure, passes through the sapphire window, and forms a stable light beam that is vertically irradiated to the receiver 202; at this time, when there is no particulate matter, the light intensity received by the detector is constant, and a stable reference voltage signal is output; when sample liquid flows through the flow-through grooves at a constant flow rate, particulate matter in the sample liquid synchronously passes through the laser beam; each particulate matter will block part of the laser, causing the light intensity irradiated to the detector to instantaneously weaken; the overall steps are: light beam emission, particulate matter blocking, signal change, and data conversion, which are prior art and will not be further described herein. When liquid passes through the flow-through grooves, the liquid may contain bubbles; the working principle of the particulate matter detection device based on the light blocking method is that when any particle, whether solid or bubble, passes through the laser beam, the light will be blocked, causing the light intensity received by the detector to instantaneously weaken. The sensor records this “light intensity weakening signal”. Solid particles: block light, generate an electric pulse. The amplitude of the pulse is usually proportional to the projected area of the particle, that is, the particle size. Bubbles: also refract and scatter light, causing the light intensity to weaken and generating an electric pulse that is extremely similar or even identical to that of solid particles.

[0028] Therefore, the bubbles in the liquid will also block the light when passing through the laser beam, generating an electrical signal pulse very similar to the solid particles, causing the sensor to mistakenly count the bubbles as particles, resulting in a significant overestimation of the particle count value, seriously interfering with the accuracy of the results. Therefore, the present application is characterized in that a fixed circular frame 3 is arranged on the top of the sensor shell 2, and the rotating ring 300 on the fixed circular frame 3 is connected with the pipeline of the liquid to be detected, and the bottom of the fixed circular frame 3 is connected with the flow-through groove of the sensor shell 2 through the connecting pipe 203. When the liquid to be detected enters the defoaming mechanism outside the first rotating ring 302, the defoaming mechanism eliminates the bubbles during rotation, so that the liquid in the defoaming mechanism flows into the sensor shell 2 through the connecting pipe 203 for detection, eliminating the interference of bubbles from the source and effectively avoiding miscounting, ensuring the authenticity and accuracy of particle count and particle size analysis results.

[0029] In the second embodiment, the fixed circular frame 3 is internally connected with a rotating ring 300, the fixed circular frame 3 is internally fixedly connected with a bevel gear disc 304, a gap is arranged 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 respectively rotatably connected with the two sides of the fixed circular frame 3. The outer side of the casing 1 is fixedly connected with a driving motor, and the output shaft of the driving motor is fixedly connected with the second rotating ring 303.

[0030] The defoaming mechanism comprises a collecting cylinder 4, one end of the collecting cylinder 4 is in close contact with the inner wall of the fixed circular frame 3, the other end of the collecting cylinder 4 penetrates through the first rotating ring 302 and is rotatably connected with the first rotating ring 302, one end of the collecting cylinder 4 is fixedly connected with a rotating rod 402, and the rotating rod 402 penetrates through the second rotating ring 303 and is rotatably connected with the second rotating ring 303.

[0031] The defoaming mechanism further comprises a bevel gear 403 fixedly connected to one end of the rotating rod 402, the bevel gear 403 is meshingly connected with the bevel gear disc 304, and a plurality of air permeable membranes 401 are fixedly connected to one end of the collecting cylinder 4 close to the first rotating ring 302 for bubbles to pass through. An air extraction pipe 801 is fixedly connected to the outer side of the fixed circular frame 3, and the air extraction pipe 801 extends to between the first rotating ring 302 and the second rotating ring 303 at both ends, and is fixedly connected with an external air extraction pipeline.

[0032] In specific implementation, when the docking pipe 301 is docked with one end of the collection cylinder 4, liquid enters the inside of the collection cylinder 4, and then the driving motor drives the first rotating ring 302 and the second rotating ring 303 to rotate, so that the first rotating ring 302 drives the collection cylinder 4 to rotate together, and the bottom of the collection cylinder 4 is fixedly connected with the rotating rod 402, the bevel gear 403 on the rotating rod 402 is in meshing connection with the bevel gear disc 304, and then the collection cylinder 4 is driven to rotate, and the collection cylinder 4 rotates in the process of rotating with the first rotating ring 302, so that the liquid in the inside of the collection cylinder 4 is centrifugally rotated, and the bubbles are gathered to the side of the central shaft at the top of the collection cylinder 4 under the action of the centrifugal force, and a plurality of air permeable membranes 401 are arranged at one end of the collection cylinder 4, the air permeable membranes 401 are made of hydrophobic materials, and the filter pore diameters thereof are smaller than those of the particulate matters, so that only gas can pass through, the bubbles are gathered at the air permeable membranes 401, and since the air permeable membranes 401 are 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 pumped by the air pump 801, and the bubbles are pumped out, so that the bubbles in the liquid to be detected are eliminated.

[0033] In summary, the working process of the defoaming mechanism is as follows: after the docking pipe 301 is docked with the collection cylinder 4, liquid is injected into the inside of the collection cylinder 4. The driving motor is started to drive the first rotating ring 302 and the second rotating ring 303 to revolve, and then the meshing of the bevel gear 403 and the fixed bevel gear disc 304 drives each collection cylinder 4 to simultaneously rotate at high speed.

[0034] The liquid in the collection cylinder 4 is rapidly pushed to the side of the rotating central shaft at the top of the collection cylinder 4 under the action of strong centrifugal force. At this position, the air permeable membrane 401 made of hydrophobic material constitutes a selective barrier, and the pore diameter thereof allows gas to pass through but completely blocks liquid and particulate matters. The bubbles gathered here are rapidly pumped away from the system under the continuous vacuum negative pressure applied to the rotating ring inter-chamber by the air pump 801.

[0035] The above scheme thus achieves active, rapid and selective removal of bubbles in liquid, while ensuring zero loss of particulate matters in the whole process, providing a non-interfering high-quality sample for subsequent optical detection, and fundamentally improving the accuracy of particulate counting data.

[0036] The collecting cylinder 4 is internally provided with a magnetic rod 502, the collecting cylinder 4 is externally sleeved with a bottom plate 5, the collecting cylinder 4 is provided at the top with a first magnetic ring 501, the first magnetic ring 501 is sleeved on the outside of the collecting cylinder 4 and is magnetically adsorbed with the magnetic rod 502, the outside of the first magnetic ring 501 is provided with a buffer frame 504, the buffer frame 504 is fixedly connected to the top of the bottom plate 5, the buffer frame 504 is rotatably connected with a rotating sealing plate 503 at the top, the rotating sealing plate 503 is fixedly connected with the first magnetic ring 501, the bottom of the rotating sealing plate 503 is fixedly connected with a buffer plate 507, a plurality of buffer grooves 5071 are formed in the outside of the buffer plate 507, the buffer grooves 5071 are circular truncated cone-shaped, the buffer plate 507 extends into the buffer frame 504, the buffer frame 504 is fixedly connected with a mounting plate 508 inside, and the buffer frame 504 is filled with a buffer solution.

[0037] The first magnetic ring 501 is fixedly connected with a pushing branch plate 500 outside, the buffer frame 504 is fixedly connected with a fixed plate 506 inside, the fixed plate 506 and the pushing branch plate 500 are fixedly connected with an elastic element 505 for resetting between them, the bottom plate 5 is fixedly connected with a second magnetic ring 509 at the top, the second magnetic ring 509 is sleeved on the outside of the buffer frame 504, the buffer frame 504 is fixedly connected with a magnetic ring outside, the magnetic ring is magnetically adsorbed with the second magnetic ring 509, the first rotating ring 302 is fixedly connected with an electric push rod 510 outside, and the telescopic end of the electric push rod 510 is fixedly connected with the bottom plate 5.

[0038] In actual implementation, when the liquid is separated from the gas by centrifugation, a large number of particles will be concentrated on the inner wall of the collection cylinder 4, and a large number of particles may be stacked during detection. Therefore, a magnetic rod 502 is arranged inside the collection cylinder 4, and a first magnetic ring 501 is arranged outside the collection cylinder 4. The first magnetic ring 501 is magnetically adsorbed with the magnetic rod 502. 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 adsorption. A buffer frame 504 is arranged on the top of the bottom plate 5. A magnetic ring is arranged outside the buffer frame 504. A second magnetic ring 509 is magnetically adsorbed with the magnetic ring. The buffer frame 504 remains relatively static. When the first magnetic ring 501 rotates to drive 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 plate 507 through the buffer groove 5071. The liquid passes through the large end of the buffer groove 5071, and at the same time, the supporting plate 500 pushes the elastic element 505 to be extruded. When the elastic element 505 is compressed to a certain extent, the buffer frame 504 is driven to rotate. When the separation is completed, the collection cylinder 4 stops rotating. The magnetic ring outside the buffer frame 504 is magnetically adsorbed with the second magnetic ring 509. The compressed elastic element 505 drives the supporting plate 500 to reset. The liquid inside the buffer frame 504 blocks the buffer plate 507, ensuring that the first magnetic ring 501 rotates slowly, so that the first magnetic ring 501 drives the magnetic rod 502 to rotate inside the collection cylinder 4. The liquid in the collection cylinder 4 is stirred to flow, so that the particles and the liquid are mixed, avoiding a large amount of stacking affecting the accuracy of detection. At the same time, the electric push rod 510 can drive the bottom plate 5 to descend, so that the bottom plate 5 moves outside the collection cylinder 4, so that the first magnetic ring 501 and the magnetic rod 502 also move, so that the particles in the collection cylinder 4 are mixed more fully.

[0039] The working principle can be divided into: 1. Energy storage and damping buffer in the centrifugal stage In the centrifugal defoaming stage, the collection cylinder 4 rotates at high speed, and the magnetic rod 502 inside the collection cylinder 4 rotates with it.

[0040] Through magnetic adsorption, the magnetic rod 502 drives the first magnetic ring 501 outside the collection cylinder 4 to try to rotate synchronously.

[0041] However, the buffer system connected with the first magnetic ring 501 through the supporting plate 500 and the elastic element 505 is adsorbed by the second magnetic ring 509 and the magnetic ring on the buffer frame 504, and remains relatively static.

[0042] Therefore, the rotation tendency of the first magnetic ring 501 is converted into compression of the elastic member 505, and the rotational kinetic energy is stored as elastic potential energy. At the same time, the buffer plate 507 fixed to the first magnetic ring 501 rotates in the buffer frame 504 filled with liquid, and the hydraulic damping effect is generated when the liquid flows through the buffer groove 5071, so that the smooth and controllable energy storage process is ensured, and violent impact is avoided.

[0043] 2. Automatic gentle resuspension after centrifugation stop When the centrifugal drive stops, the collection cylinder 4 no longer rotates.

[0044] At this time, the compressed elastic member 505 starts to release the stored potential energy, and reversely pushes the push plate 500, thereby driving the first magnetic ring 501 to rotate slowly.

[0045] The first magnetic ring 501 drives the magnetic rod 502 inside the collection cylinder 4 to gently stir the liquid through magnetic coupling.

[0046] The continuous damping effect of the liquid in the buffer frame 504 on the buffer plate 507 ensures that the stirring is low-speed and gentle, effectively resuspends the deposited particles, and maximally avoids generating new bubbles.

[0047] 3. Axial stirring to enhance mixing effect In order to further improve the mixing uniformity, the electric push rod 510 can drive the bottom plate 5 and the entire magnetic stirring mechanism thereon to move axially along the collection cylinder 4.

[0048] This makes the stirring track of the magnetic rod 502 upgrade from a fixed plane rotation to a spiral motion covering the entire longitudinal depth of the collection cylinder, so that all the deposited particles at the bottom can be stirred more effectively, full and uniform mixing in the entire cylinder is realized, the automatic delayed stirring mechanism ensures sufficient mixing of the particles and the liquid without additional power and control, and effectively avoids detection errors caused by particle accumulation. Combined with the axial movement function driven by the electric push rod, the mixing effect is further enhanced, and finally a bubble-free and uniformly distributed representative sample of particles is provided for the optical sensor, which fundamentally guarantees the accuracy and reliability of the detection data In the fourth embodiment, the cleaning mechanism includes a vertical plate 701 fixedly connected to the top of the sensor shell 2, a gear 702 provided on one side of the vertical plate 701, a support rod fixedly connected to one side of the gear 702, the support rod penetrating through and rotationally connected to the vertical plate 701, a rotating disc 703 fixedly connected to one end of the support rod, a pull plate 704 eccentrically connected to the outside of the rotating disc 703, and an extrusion rod 710 fixedly connected to one end of the pull plate 704.

[0049] The cleaning mechanism further comprises a fixed cylinder 705 fixedly connected to the top of the sensor shell 2, an extrusion rod 710 penetrating through the inside of the fixed cylinder 705 and being in sliding connection with the fixed cylinder 705, one end of the extrusion rod 710 being attached to the inner wall of the fixed cylinder 705, a storage box 706 fixedly connected to the outside of the sensor shell 2, a one-way liquid inlet pipe 708 fixedly communicated between the storage box 706 and the fixed cylinder 705, a one-way liquid outlet pipe 707 fixedly communicated between the fixed cylinder 705 and the communication valve 709, an incomplete gear plate 9 provided on the outside of the fixed circular frame 3, the motor output shaft being fixedly connected with the incomplete gear plate 9, and the incomplete gear plate 9 being in meshing connection with the gear 702.

[0050] In specific implementation, when the liquid defoamed by the collecting cylinder 4 is detected through the bottom plate 5 via the connecting pipe 203, when the collecting cylinder 4 is switched, the incomplete gear plate 9 is rotated together with the driving motor output shaft, the teeth on the incomplete gear plate 9 are in meshing with the gear 702, the gear 702 drives the rotating disc 703 to rotate, the rotating disc 703 pulls the extrusion rod 710 to reciprocate in the fixed cylinder 705 through the pull plate 704, the pure liquid in the storage box 706 is drawn into the fixed cylinder 705, and is delivered to the communication valve 709 through the one-way liquid outlet pipe 707, so that the pure liquid passes through the flow-through groove in the bottom plate 5. This automatic flushing process can effectively remove the particles possibly remaining in the last detection, perfectly avoids cross contamination and data distortion, and provides reliable guarantee for ensuring the accuracy of each liquid cleanliness detection.

[0051] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0052] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and the entire scope and equivalents thereof.

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 to 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).

2. The liquid particle cleanliness detector according to claim 1, characterized in that: The fixed circular frame (3) is rotatably connected to a rotating ring (300), 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 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).

3. The liquid particle cleanliness detector according to claim 2, characterized in that: 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).

4. The liquid particle cleanliness detector according to claim 3, characterized in that: 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.

5. 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 squeezing rod (710) is fixedly connected to one end of the pull plate (704).

6. The liquid particle cleanliness detector according to claim 5, characterized in that: The cleaning mechanism also includes a fixed cylinder (705), which is fixedly connected to the top of the sensor housing (2). The 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 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).

7. The liquid particle cleanliness detector according to claim 4, characterized in that: The collecting cylinder (4) is equipped with a magnetic rod (502) inside. A base plate (5) is fitted around the outside of the collecting cylinder (4). A first magnetic ring (501) is fitted on the top of the collecting cylinder (4). The first magnetic ring (501) is fitted around the outside of the collecting cylinder (4) and magnetically attracted to the magnetic rod (502). A buffer frame (504) is provided 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 (504) is rotatably connected to the top of the buffer frame (504). 03), 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 frustum-shaped. The buffer plate (507) extends into the buffer frame (504). An installation plate (508) is fixedly connected inside the buffer frame (504). The buffer frame (504) is filled with buffer solution.

8. The liquid particle cleanliness detector according to claim 7, characterized in that: 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 bottom 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), and the telescopic end of the electric push rod (510) is fixedly connected to the bottom plate (5).

9. 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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