33 results about "Particle counter" patented technology

1. The name of the design product: small flow hand-held laser dust particle counter (KQ-3001PRO2.83L). 2. The use of the design product: the design product can realize the detection of clean room dust particle size and the counting of particle number, can detect 0.2 μm particle number, and is suitable for electronic, semiconductor, liquid crystal panel, micro-nano processing, aerospace, precision machining, new material, scientific research institute and other ultra-clean scenes. 3. The design points of the design product: the overall shape of the product. 4. The picture or photo that can best show the design points: perspective view.

The application discloses a light-proof flow cell and relates to the field of particle counter accessories, which comprises a first shell and a second shell, flow holes are formed in the first shell and the second shell, a wear-resistant light-blocking layer is arranged between the first shell and the second shell, a plurality of first plug-in holes are formed in the second shell, and a plurality of corresponding first plug-in columns are arranged in the plurality of first plug-in holes. The first shell and the second shell are made of quartz diamond material, and the hardness is high, so that the contact with the detection liquid is diamond material, the wear resistance can be improved, the first plug-in hole and the first plug-in column are arranged at four corners and are matched, and the butt joint precision is improved, so that the grinding effect of the flow holes by the grinding liquid can be effectively reduced, the phenomenon that the pore size of the flow cell becomes large can be avoided, and therefore the accuracy is not greatly affected during counting, and the stability during use and the counting accuracy are improved.

The embodiment of the application provides an optical particle counter, and relates to the technical field of counter processing. The application discloses an optical particle counter, which comprises a support cabinet and further comprises: a detection assembly fixedly installed at the lower part of the support cabinet; wherein the detection assembly comprises: a transmission pipe, and a transparent pipe is integrally formed in the middle part of the transmission pipe. According to the application, liquid samples flow into the transparent pipe section integrally formed in the middle part of the transmission pipe under the driving of the injection assembly, and when the particles in the liquid pass through the intersection point, the light intensity changes: smaller particles mainly cause light scattering signals, which are received and analyzed by a scattering sensor; larger particles block a certain proportion of light flux, forming light intensity reduction signals, which are recognized by a reduction sensor, and a first control board synchronously collects two signals and fuses data, so that particle size recognition, quantity counting and classification output are realized.

This specification relates to an optical particle counter, a method for using an optical particle counter, and a method for reducing particle counting errors during use of an optical particle counter. The method includes placing an optical isolator between a laser and a flow cell to allow laser light to pass through the flow cell and to reduce the intensity of light returned to the laser as optical feedback that could cause mode hopping.

This invention discloses an apparatus and method for determining the filtration efficiency of a filter body even in a clean state. One or more embodiments of this disclosure relate to a method for determining the filtration efficiency of a filter consisting of a porous wall portion having a longitudinal axis extending from an inlet end (202) to an outlet end (204), and an outer peripheral portion extending parallel to the longitudinal axis and surrounding the porous wall portion. The method includes: sealing the outer peripheral portion; forcing an inlet flow consisting of gas into the inlet end (202) of the filter at a set flow rate; introducing particles, such as smoke particles, into the inlet flow; and optically counting the number of particles entering and leaving the filter during a sampling event, for example using diffraction-based optical particle counters located upstream and downstream of the filter.

The application discloses a particle counter, which comprises a pumping source for emitting first wavelength laser; the first wavelength laser emitted by the pumping source enters a laser resonant cavity; a laser crystal is arranged in the laser resonant cavity, and the laser crystal is irradiated by the first wavelength laser to form second wavelength laser, and the second wavelength laser forms light oscillation in the laser resonant cavity; a convex lens group comprises two convex lenses with the same focal length and arranged at intervals, the convex lens group is arranged between the pumping source and the laser resonant cavity, and the convex lens group focuses the first wavelength laser on the laser crystal; an aerosol generating device provides an aerosol airflow into the laser resonant cavity, and the aerosol airflow passes through the light beam of the second wavelength laser; and a photoelectric detection device detects the scattering light signal of the aerosol particles. The application can realize detection of dust particles with a particle size of 0.1 microns, and has the advantages of low power consumption, portability and high detection precision.

The application provides a portable GIS installation environment remote monitoring system and belongs to the technical field of environment monitoring. The portable GIS installation environment remote monitoring system comprises a tug device box, a host unit, a power supply unit, a low-position monitoring unit, a folding support unit, a high-position collecting unit, a hollow shaft, a flexible air pipe arranged in the hollow shaft, one end of the flexible air pipe connected with an air inlet end of a laser dust particle counter through the folding support unit, and the other end connected with an isokinetic sampling head arranged above the hollow shaft; an air outlet of the laser dust particle counter is connected to an outlet section inside a gas flow cavity through a pipeline and is arranged towards the outlet of the gas flow cavity; the application also significantly reduces monitoring errors through innovative air path design, skillfully utilizes exhaust gas of a tail section of the laser dust particle counter to drive a Venturi structure, forms a positive suction air flow, realizes stable and uniform suction detection of SF6 gas, and adjusts the flow, without an additional pump body, energy saving, and controllable air flow.

This invention discloses a magnesium alloy processing equipment with a cutting fluid monitoring and filtration separation structure, relating to the field of filtration separation technology. The invention installs a filtration tank on one side of an immersion tank, forming a vertically downward liquid curtain within the filtration tank via an overflow trough. A blower drives the cutting fluid aerosol generated above the filtration tank through the liquid curtain, achieving filtration and separation of aerosol impurities. This effectively improves the safety and stability of the equipment during operation. Furthermore, by immersing the magnesium alloy in the cutting fluid within the immersion tank, and using various sensors within the immersion tank for monitoring liquid level, viscosity, acid value, particle counter, and moisture content, a system can be constructed to monitor the cutting fluid status in real time and adjust the filtration separation effect accordingly. This effectively prevents cooling and lubrication failures caused by cutting fluid deterioration, further reducing safety risks during equipment operation.

The utility model discloses a kind of particle counter optical path systems, light source is configured as emitting linear polarized light;Aspherical lens is arranged in the light-emitting side of light source;Polarization light splitting piece is arranged in the side of aspherical lens away from light source, polarization light splitting piece is configured as by horizontal polarization linear polarized light and reflection vertical deflection linear polarized light;Quarter wave plate is arranged in the side of polarization light splitting piece away from aspherical lens;Photoelectric detection part is configured as detecting the scattered light signal of particle flowing through photosensitive area.This scheme can realize the detection of smaller particle size gas particles.

The utility model relates to lubricating oil monitoring technical field, including monitoring inlet pipe, inlet electric ball valve, micro pump, oil state sensor, oil particle counter, oil metal abrasive particle sensor, outlet electric ball valve and monitoring outlet pipe, monitoring inlet pipe, inlet electric ball valve, oil state sensor, micro pump, oil metal abrasive particle sensor, outlet electric ball valve and monitoring outlet pipe are sequentially connected through the pipeline, and the first tee joint is established between inlet electric ball valve and oil state sensor, the second tee joint is established between micro pump and oil state sensor, and one end of first tee joint and one end of second tee joint are connected with oil particle counter. The lubricating oil monitoring device, through oil state sensor, the collaborative work of particle counter and metal abrasive particle sensor can comprehensively monitor the physical property and chemical state of lubricating oil, and solve the hardware redundancy problem caused by the dependence of traditional equipment on multiple independent sensors.

The present application relates to the technical field of pharmaceutical production environment monitoring, in particular to a pharmaceutical production environment monitoring method based on an intelligent sensing system, comprising: deploying an intelligent sensing array composed of a temperature and humidity sensor, a micro differential pressure sensor, a particle counter and a chemical gas sensor, collecting clean area environment parameters and generating a preliminary environment risk thermodynamic map; superimposing the thermodynamic map with the process operation steps of the drug batch production log to screen out a high-risk process strongly associated spatiotemporal data subset; calling an aerodynamic simulation model to inverse the pollution source propagation path and leakage point coordinates, calling historical baseline data to calculate the pollutant concentration decay curve, coupling the air exchange frequency data to estimate the environmental abnormality duration and influence radius, delineating the material isolation boundary and improving the monitoring level, and finally generating a structured monitoring report. The method can accurately focus on environmental risks, achieve abnormal tracing and quantitative analysis, reduce material loss, and ensure the continuity and safety of pharmaceutical production.

This disclosure provides a method for diagnosing cylinder liner wear in a diesel engine, relating to the field of diesel engine fault diagnosis technology. The method includes: counting particulate matter in the exhaust gas emitted by the diesel engine using a laser particle counter to obtain particulate matter concentration data; capturing images of the particulate matter in the exhaust gas using a microscope to extract particulate matter morphology data from the images; collecting particulate matter data from the exhaust gas using an inductively coupled plasma mass spectrometer to analyze the composition of the particulate matter and obtain particulate matter composition data; extracting features from the particulate matter concentration data, morphology data, and composition data to obtain particulate matter concentration features, morphology features, and composition features; and performing cylinder liner wear diagnosis based on the particulate matter concentration features, morphology features, and composition features to obtain wear diagnosis results.

The present application relates to the technical field of medical instrument detection, and discloses a medical breathing filter element performance detection device, wherein the device comprises a rack, a pressing mechanism, a sealing assembly, an air flow supply assembly and a detection assembly. The air cylinder piston rod of the pressing mechanism drives the upper sealing seat to vertically press down along the guide rod, and the upper sealing ring and the lower sealing ring press the two end faces of the filter element respectively, so that the upper air cavity, the internal passage of the filter element and the lower air cavity constitute a closed air-tight detection passage. The detection assembly obtains the air flow resistance and particle filtration efficiency data of the filter element through the flow meter, the pressure sensor and the particle counter. The present application solves the problems of unreliable sealing, inconsistent pressing force and low clamping efficiency in the existing manual detection mode.

This utility model discloses a simulated field testing device for the applicability of a cleanroom robot, comprising a simulated field chamber for placing the cleanroom robot to be tested, an air conditioning purification system connected to the external environment for purifying the simulated field chamber, an ultraviolet disinfection lamp installed inside the simulated field chamber, a test operation room surrounding the simulated field chamber, a clean air shower between the test operation room and the external environment for entering the test operation room, and a sampling tube extending from the test operation room into the simulated field chamber to collect dust particles outside the simulated field chamber, the sampling tube being connected to a particle counter for recording the concentration of dust particles before and after cleaning by the cleanroom robot inside the simulated field chamber.

This utility model discloses a particle counter module, which includes an air inlet, a clean air inlet, and an exhaust outlet. The sampling air path includes a first filter, a sampling pump, and a three-way connector I. The clean air path includes a purge clean air path, a self-cleaning clean air path, and a common clean air path. The purge clean air path and the self-cleaning clean air path are connected in parallel, and the common clean air path is connected to the clean air inlet. When the particle counter module is working, it operates in purge clean mode, the sampling pump is on, and the air supply pump is off. Gas flowing from the exhaust outlet flows through the sampling air path, the purge clean air path, and the common clean air path to the clean air inlet. When the particle counter module stops working, it operates in self-cleaning clean mode, the sampling pump is off, and the air supply pump is on. Atmospheric air flows through the self-cleaning clean air path and the common clean air path to the clean air inlet, and then exits from the air inlet. This invention solves the problems of optical lens protection during operation and self-cleaning of the internal space after operation.

The present application relates to the technical field of black carbon aging research, and particularly relates to an experimental device for black carbon aging research, which comprises: a sample feeding system, the sample feeding system comprising a heating pipe, a pretreatment pipe, an oxidizing gas removal pipe and a drying pipe connected in series; a black carbon wrapping device, the black carbon wrapping device comprising an injection assembly, a wrapping chamber, a first absorption chamber, a heating removal assembly and a second absorption chamber connected in sequence; a detection system, the detection system being connected to the first absorption chamber, the heating removal assembly and the second absorption chamber; an integrated device, the integrated device comprising a mounting box and an aerosol charging device, a first differential migration particle size analyzer, a second differential migration particle size analyzer and a condensed particle counter arranged in the mounting box; and a control system, the control system being arranged in the mounting box and used to regulate and control the sample feeding system, the black carbon wrapping device, the detection system and the integrated device. The present application improves the convenience of black carbon research.

This application provides a stable air intake device, a dust particle counter, and a gas sampling method for a particle counter, belonging to the field of particle counters. The stable air intake device includes: a main pipe for flowing sampling airflow driven by a negative pressure pump; a Venturi tube fixedly fitted inside the main pipe, the Venturi tube including a throat section and an expansion section, the expansion section being close to the air intake end of the main pipe and forming the input end of the Venturi tube; a gap is provided between the expansion section and the main pipe to allow the sampling airflow to pass through; the input end of the Venturi tube is connected to a clean air source; wherein the length of the main pipe is longer than the length of the Venturi tube, and the main pipe is connected to the sampling end of the particle counter. This application embodiment improves the flow stability of the sampling airflow and maintains a constant sampling flow rate through a dual-drive mechanism of main-path negative pressure suction combined with Venturi negative pressure ejection, reducing the sampling flow rate fluctuation rate of the dust particle counter and promoting the improvement of particle counting accuracy.

With respect to some embodiments, described herein is an apparatus for the growth and detection of particles suspended in a gas stream, using a working condensation fluid that has a Lewis number greater or less than unity. The apparatus can include a saturation chamber and a condensation chamber and can produce particle growth by way of a system which offers bidirectional temperature control of both chambers. The apparatus can include a detection system of particles in a detection chamber. A test fluid carrying the particles can pass through the detection chamber and be separated from the detection system with a barrier fluid that is also passing through the detection chamber.

1. Name of the product in this design: Radiation Particle Counter. 2. Application of this design: It is used in fields such as nuclear power plants, nuclear chemical industry and environmental monitoring to perform four-channel simultaneous measurement and radioactivity analysis of α and β radiation particles in collected gaseous and liquid samples. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

The utility model provides a kind of particle counter air path structure, it is mainly constituted by sensor shell, air path pipeline, flow regulating pipe and micro pressure difference detection component, air path pipeline contains air inlet pipe and air outlet pipe, air inlet pipe outlet is less than air outlet pipe air inlet, flow regulating pipe is composed of at least two sections of communicating pipeline, micro pressure difference detection component is communicated with air path pipeline by first, second micro pressure difference sampling pipe, and is connected micro pressure difference sensor, flow regulating pipe and air path pipeline have multiple connection modes, under different connection mode, air path pipeline has pipe diameter narrow section, limit ring and the like structure.The utility model discards complex algorithm and control process, realizes air flow effective regulation, simplifies regulation and control process, optimizes pipeline connection and flow regulating pipe design, reduces dependence on expensive components, reduces cost, flow regulating pipe specific setting can also be used to obtain micro pressure difference data, with remarkable practical value and market prospect.

The application relates to the technical field of industrial automation control, in particular to a high-precision self-adaptive embedded electronic particle counting machine control system and method, which comprises the following steps: calling a historical optimal parameter set in a material database through a parameter presetting module, and configuring a high-frequency photoelectric sensor and an industrial camera; synchronously collecting event data and image data by using a multi-modal perception counting module, and generating a particle counting result by using a data fusion algorithm; acquiring a total weight by using a weighing module and calculating an actual particle quantity by using a physical reference feedback module; comparing the actual quantity and the counting result by using an error calculation and judgment module, calculating a real-time counting error rate, and dynamically fine-tuning photoelectric sensitivity and visual analysis parameters in the historical optimal control parameter set based on the error rate by using a self-adaptive correction module when the error rate is out of limit. The application realizes online self-correction and long-term stable maintenance of counting precision, and effectively improves adaptability and counting accuracy of the equipment to complex materials.

The invention discloses a method and a system for preventing impurities and foreign matters from entering a powder finished product, an integrated process of vacuum closed conveying, multi-field cooperative separation, double-path online monitoring and closed-loop control is adopted, external pollution is completely eradicated from the source through vacuum closed conveying, and the impurities and foreign matters are effectively prevented from entering the powder finished product through three-stage cooperative treatment. Gradient removal of full-size and full-type impurities above 0.1 mu m is achieved, millisecond-level impurity detection is achieved through double-path online monitoring of an LIBS and a light scattering particle counter, and full-automatic closed-loop regulation and control of technological parameters are achieved in cooperation with a PLC system. The total impurity content of the powder finished product can be stably reduced to be smaller than or equal to 10 ppm, the impurity removal rate is larger than 99.9%, the secondary pollution risk is smaller than 0.1%, the treatment efficiency is larger than or equal to 100 kg / h, the operation cost is reduced by 50% or above, and the problems that in the prior art, submicron impurities are not thoroughly removed, secondary pollution is prone to occurring, detection lags, efficiency is low and cost is high are solved.

This application relates to the field of sampling and calibration device technology, and more particularly to an automatic sampling and calibration device for multi-point environmental parameters in space. The technical solution includes a main control device and at least one movable measuring platform. The main control device integrates a hygrometer, a dust particle counter, a differential pressure sensor, a sound level meter, an illuminance meter, a fiber optic temperature sensor, and an anemometer. The movable measuring platform integrates a fiber optic temperature sensor and a hygrometer. Both the main control device and the movable measuring platform are equipped with lifting devices and laser rangefinders, respectively used for sensor height adjustment and automatic positioning. The main control device has a control unit that controls each device to move to a designated point and rise to a set height according to a preset program, simultaneously collecting multiple environmental parameters and generating a calibration report. This application achieves efficient, accurate, and automated calibration of environmental parameters through integrated design, automatic positioning and lifting, and multi-machine collaborative control.

A particle counter comprises; a horizontal inlet 1 for carrier gas / aerosol flow; a heated mixer chamber 2 where gas saturated with a working fluid vapour is added to the aerosol; a horizontal cooled c

This invention discloses a portable device and method for detecting the bulk density of a ring knife soil sample using gamma rays, and belongs to the field of soil bulk density measuring devices. The device includes a gamma ray source, a housing, a radiation particle counter, a pull-out sample case, and a power supply. The center of the radiation detection window of the radiation particle counter is on the same vertical line as the center of a third radiation penetration hole opened in the top plate of the sample case, a second radiation penetration hole opened in the bottom plate of the pull-out sample case, a first radiation penetration hole opened in the sample case support plate, and the gamma ray emission hole. The radiation particle counter records the gamma ray intensity before and after placing the soil sample, and then the bulk density of the soil sample is obtained by direct calculation based on the soil bulk density calculation formula. This method allows for rapid calculation of soil bulk density data, enabling continuous and rapid measurement of the bulk density of ring knife soil samples in the field.

The utility model relates to the related field of particle detection technology especially online particle counter, including upper shell, bottom shell, adapter plate, sampling port, gasket, instrument film, hanging plate, function port cover plate, first mainboard, sensor, pressure taking port, sensor lower mouthpiece, second mainboard and mainboard protection board, first mainboard fixed connection is established in bottom shell, pressure taking port is connected in sensor lower extreme, sensor lower mouthpiece with sensor lead -through connection, the sensor is fixed on adapter plate, adapter plate with first mainboard fixed connection, mainboard protection board with second mainboard fixed connection, second mainboard is connected with adapter plate, upper shell is sealedly connected with bottom shell, sampling port with sensor lead -through connection has realized the effect that particle detection range increases and collection accuracy improves, and equipment supports internal cache data, and compatible modbus with TCP / IP communication mode, satisfies the data storage and interaction demand under different scenes.

The utility model belongs to oil liquid particle counter technical field discloses a kind of oil liquid particle counter that can be pretreated to sample, including oil liquid particle counter body and sample bottle, guide rod is installed on the oil liquid particle counter body, the outer surface of the guide rod is slidably connected with moving cylinder, the moving cylinder is provided with the positioning mechanism for positioning the position of moving cylinder, the outer surface of the moving cylinder is fixedly connected with connecting plate, the outer surface of the connecting plate is fixedly connected with bottom bin, the inside of the bottom bin is slidably connected with carrier plate, the bottom surface of the carrier plate is fixedly connected with a group of second spring, by setting vibration motor, carrier plate and limiting mechanism, the screw rod of limiting mechanism is adjusted by hand twist block, so that abutting rubber block fixes sample bottle, vibration motor drives carrier plate and second spring vibration, can scatter sedimentation particle, realize sample pretreatment, without external instrument, solve sample distortion problem, guarantee detection accuracy.

The application discloses a particle counter sensor with a protective gas sleeve and relates to the technical field of particle detection. The application has the functions of air inlet pipe cleaning and air outlet pipe cleaning, and through adoption of the liftable blowing structure and the rotary blowing assembly, the inner wall of the pipeline can be fully cleaned when the particle counter is stopped, and when the application is used, the detection flow channel inner wall is smoothly transitioned, the airflow is smooth and stable, particle retention and airflow disturbance are effectively reduced, and the detection precision and use reliability of the particle counter sensor are remarkably improved.