24 results about "Particulate matter sampler" patented technology

The utility model provides a filter membrane mounting structure and an air particulate matter sampler, comprising a mounting base provided with a mounting cavity; the supporting boss is arranged in the mounting cavity, the supporting boss and the mounting base are arranged in a spaced mode, and a mounting gap is formed between the supporting boss and the mounting base; the filter membrane clamp is separably arranged on the mounting base and is used for pressing the filter membrane on the supporting boss and enabling the edge of the filter membrane to extend into the mounting gap; the buckle assembly comprises a plurality of first clamping parts arranged on the inner wall of the mounting cavity at intervals and a plurality of second clamping parts arranged on the circumferential surface of the filter membrane clamp at intervals, and the first clamping parts and the second clamping parts are clamped in a one-to-one correspondence mode. The technical problem that a traditional filter membrane is low in installation efficiency is solved.

The utility model relates to a kind of anti-clogging particulate matter sampler, and it relates to particulate matter sampler technical field, solve the problem that existing technology exists that particulate matter is attached to the surface and internal pore of filter membrane, the channel of airflow passing is narrowed, causes airflow to be blocked.The sampler main body is sequentially connected with air inlet channel, particulate matter cutter and filter cavity on the sampler main body, filter membrane assembly is detachably installed in the filter cavity;Air outlet channel is connected in the sampler main body, the filter cavity is communicated with the air outlet channel, first pressure sensor, flow regulating valve and air pump are sequentially connected on the air outlet channel;Air agitation cavity is arranged between the filter cavity and the air outlet channel, stirring fan is installed in the air agitation cavity, multiple air holes are arranged between the filter cavity and the air agitation cavity.The beneficial effect is: it can be stirred particulate matter attached on filter membrane by changing the direction of airflow, avoid due to particulate matter accumulation.

The utility model discloses a particulate matter sampler for environment detection, which comprises a sampler main body and a cutter main body, the upper surface of the sampler main body is fixedly connected with a mounting sleeve, the two sides of the mounting sleeve are symmetrically and fixedly connected with sleeve shells, the surfaces of the sleeve shells and the mounting sleeve are jointly provided with mutually communicated sliding holes, the inner walls of the sliding holes are slidably connected with positioning pins, and the positioning pins are fixedly connected with the cutter main body. A baffle is fixedly connected to the outer surface of the positioning pin, the outer surface of the positioning pin is sleeved with a spring located on the inner side of the sleeve shell, an outward pulling mechanism is arranged at the end, away from the baffle, of the positioning pin, and inserting holes are symmetrically formed in the outer surface of the cutter body. By arranging the sleeve shell, the positioning pin, the baffle, the spring, the outward pulling mechanism and the inserting hole, the spring is used for applying elastic force to the baffle, the positioning pin can be conveniently inserted into the inserting hole, and therefore the cutter body can be conveniently installed and fixed, by arranging the outward pulling mechanism, the positioning pin can be conveniently separated from the inserting hole, and therefore the cutter can be conveniently disassembled and debugged, operation is easy and convenient, and practicability is high. And the time is effectively saved.

The utility model discloses an air particulate matter sampler, and relates to the technical field of air particulate matter sampling, the air particulate matter sampler comprises a sampling main body, the front side of the sampling main body is provided with a protection assembly, and the protection assembly is used for protecting the front side of the sampling main body. Meanwhile, a worker moves a bottom shell downwards, when a connecting rod moves to the bottom of an opening of a long round shell, the worker loosens a pull ring, a movable plate can move to the bottom of a blocking piece, then the worker loosens the bottom shell, and a long spring can drive the movable plate to move upwards through a round block, the connecting rod, an outer cover and the bottom shell by means of self elasticity; the movable plate can be in contact with the separation blade for fixation, so that the outer cover can shield the front surface of the sampling main body, the protection assembly can protect the control panel of the sampling main body, and the damage probability of the sampling main body can be reduced.

This invention belongs to the field of environmental monitoring technology, and particularly relates to a high negative pressure ambient air particulate matter sampler. Addressing the challenges of achieving dual-mode sampling, anti-interference graded cutting, dynamic flow balancing, and constant temperature sealing, the following solution is proposed: a sampling shell, a sampling head, a pipeline assembly, a sampling bottle base, and a sampling bottle. This invention enables graded sampling of particulate matter of different sizes. The pipeline assembly includes a three-way diversion pipe and a dynamic flow balancing unit to ensure consistent airflow in both paths. The switching branch pipe allows for automatic replacement of the sampling bottle. The sampling bottle base, through a bottle body positioning sleeve, an annular electromagnetic heating plate, a connector positioning sleeve, and an annular fixing bladder, achieves stable sealing and constant temperature heating of the sampling bottle. The sampling bottle contains an inner sampling bottle; the adsorption sampling inner bottle has a multi-layer adsorption sampling bottom mesh, and the absorption sampling inner bottle has a multi-layer absorption sampling partition mesh, improving sampling accuracy and efficiency. This invention is suitable for pollutant sampling under high negative pressure environments.

The utility model discloses an air particulate matter sampler, which relates to the field of air detection, and comprises a sampling head and a main machine, the sampling head comprises a TSP cutter, a PM cutter and a cutter base which are sequentially arranged from top to bottom; the opposite surfaces of the TSP cutter and the PM cutter are magnetically attracted and fixed through a magnetic attraction structure, and the opposite surfaces of the PM cutter and the cutter base are magnetically attracted and fixed through a magnetic attraction structure; the magnetic attraction structure comprises an upper magnetic column and a lower magnetic column which faces the upper magnetic column and can be connected in a magnetic attraction mode. Sealing rings are arranged on the upper end faces of the joints of the PM cutter and the cutter base. Rapid disassembly and assembly can be achieved through connection of the magnetic attraction structures, the magnetic attraction structures are correspondingly installed up and down during installation, connection can be achieved, and the magnetic attraction structures can be separated and disassembled only by screwing a very small angle to be staggered up and down during disassembly; and meanwhile, a sealing ring is arranged to ensure air tightness.

According to the technical scheme, the membrane replacing device is characterized by comprising a fixing plate, and stations which are evenly distributed around the vertical axis are arranged at the top of the fixing plate; the rotating disc is arranged in the fixing plate, the axis of the rotating disc is vertical, and the rotating disc rotates around the vertical axis of the rotating disc in the fixing plate; the filter membrane push rod is used for pushing the turntable to rotate to the filter membrane in the bearing hole at the second station and upwards enter the filter membrane bin above the second station; an air inlet seat; the lower sampling pipe can move up and down to push the filter membrane rotating into the bearing hole at the first station to be upward and clamp the filter membrane between the lower sampling pipe and the air inlet seat for sampling; and a power mechanism. Through the arrangement of the filter membrane push rod and the lower sampling pipe, the filter membrane which is switched among the three stations along with the turntable can realize automatic sampling and membrane replacement, the mechanical structure is simple, and the equipment cost is greatly reduced.

The invention belongs to the technical field of environment monitoring, particularly relates to a high negative pressure environment air particulate matter sampler, and provides the following scheme aiming at the problems of realizing dual-mode sampling, anti-interference grading cutting, dynamic shunting balance and constant temperature sealing: the high negative pressure environment air particulate matter sampler comprises a sampling shell, a sampling head, a pipeline assembly, a sampling bottle base and a sampling bottle, graded sampling of particulate matters with different particle sizes is realized; the pipeline assembly comprises a three-way shunting pipe and a dynamic shunting balance unit, so that the flow of two paths of air flow is consistent, and sampling bottles can be automatically replaced by flow conversion branch pipes; the sampling bottle base realizes stable sealing and constant-temperature heating of the sampling bottle through a bottle body positioning sleeve, an annular electromagnetic heating plate, a joint positioning sleeve and an annular fixing bag; a sampling inner bottle is arranged in the sampling bottle, a plurality of layers of adsorption sampling bottom nets are arranged in the adsorption sampling inner bottle, and a plurality of layers of adsorption sampling separation nets are arranged in the adsorption sampling inner bottle, so that the sampling precision and efficiency are improved, and the device is suitable for sampling pollutants in a high negative pressure environment.

The application discloses a kind of efficient collection and extraction method and application of air eDNA.The method uses glass fiber filter as sampling filter, uses medium-flow particulate matter sampler and TSP sampling head to carry out sampling, uses dry ice to carry out sample preservation transportation, uses PBS buffer and low-temperature low-speed centrifugal elution DNA, uses PES filter to enrich and precipitate particulate matter, and PES filter is cut into small pieces to improve DNA extraction efficiency.The environmental DNA extracted by the application has higher concentration and good integrity, and the DNA extracted by the method can obtain good amplification results using universal primers of different species for amplification, which is convenient for subsequent eDNA macro-barcode technology to analyze species diversity.

The utility model relates to the technical field of air particle sampling, and specifically to a membrane changing device for an air particle sampler, comprising a sealed box main body, a support platform is provided inside the sealed box main body, an air inlet pipe is provided on the top of the support platform, the air inlet pipe extends to the outside of the sealed box main body at one end away from the support platform, a connecting pipe is provided inside the support platform, a sampler is provided at one end of the connecting pipe away from the air inlet pipe, and a membrane changing assembly is provided on the top of the support platform; the membrane changing assembly is used for changing the membrane of the sampler, the membrane changing assembly consists of a connecting seat, a moving block, a connecting block, a clamping block, a fixed block, a moving rod, a placing tube, a collecting tube, a fixed ring, a rotating ring and a limit block, the connecting seat is located at the top of the support platform and at the outside of the connecting tube, the moving block is slidably connected to the top of the connecting seat, compared with the existing membrane changing device, the utility model can improve the overall practicality of the membrane changing device through design.

Disclosed is an automatic sample preparation device for sampling filter membranes of ambient air particulate matter. The device includes an air particulate matter sampler and a cutter, where the cutter includes a second conical tube. The second conical tube is provided with an air inlet and a sliding groove, a mounting frame is arranged on the second conical tube, sliding rods are arranged on the mounting frame, a sliding block is arranged on either of the sliding rods, and an elliptical frame is arranged on the two sliding blocks. A traction plate is arranged on the elliptical frame, a traction rod is arranged on the traction plate, a screening box is arranged on the traction rod, and the screening box and the sliding groove are arranged. A drainage block is arranged on the screening box, a discharging block is arranged on the drainage block, and screening holes are formed.

The invention discloses a multi-component quantitative analysis method for polychloroprene in atmospheric particulates, which comprises the following steps of: (1) collecting the atmospheric particulates in different particle size ranges by using a high-flow impact type grading particulate sampler and an aluminum foil or a quartz filter membrane; (2) respectively extracting the collected atmospheric particulates in different particle size ranges by using an extracting agent, concentrating the extracting agent, fixing the volume, and removing impurities; (3) analyzing polychlorobutadiene in the extract liquor after impurity removal by using a gas chromatography-triple quadrupole mass spectrometer; and (4) according to gas chromatography-triple quadrupole mass spectrometry data, performing qualitative and quantitative analysis on polychlorobutadiene in the atmospheric particulates with different particle size ranges. The analysis method disclosed by the invention can be used for simultaneously detecting various polychlorobutadiene in the atmospheric particulates, and has the advantages of simplicity in operation, high sensitivity, high selectivity and the like.

The utility model provides an air particulate matter sampler which comprises a rotating disc assembly, the rotating disc assembly comprises a rotating disc structure and a driving structure, and the rotating disc structure is provided with a first avoiding hole, a second avoiding hole and a third avoiding hole; the driving structure is connected with the turntable structure; the sample assembly comprises a first push rod head and a first push rod structure, the first push rod head corresponds to the first avoiding hole, and the first push rod structure is connected with the first push rod head; the sampling assembly comprises a second push rod head and a second push rod structure, the second push rod head corresponds to the second avoiding hole, and the second push rod structure is connected with the second push rod head; wherein a filter membrane clamp is arranged in the third avoiding hole, the driving structure drives the turntable structure to rotate, the third avoiding hole is switched to the position of the second avoiding hole, the second push rod structure jacks up the filter membrane clamp in the third avoiding hole through the second push rod head, and the first push rod structure jacks up the filter membrane clamp in the second avoiding hole through the first push rod head. And automatic film changing can be achieved.

The utility model relates to the technical field of atmospheric particulate matter samplers, in particular to an atmospheric particulate matter sampler which comprises a sampler body, a sampling pipe is arranged on the upper surface of the sampler body in a threaded penetrating mode, a sampling box is fixedly installed at the upper end of the sampling pipe, and a supporting device is arranged on the surface of the sampler body. The supporting device comprises two limiting frames fixedly connected to the surface of the sampler body, rotating rods are rotationally connected to the interiors of the two limiting frames, square tubes are fixedly installed at the ends, located on the inner sides of the limiting frames, of the rotating rods, and sliding plates are slidably connected to the inner sides of the square tubes. According to the utility model, the supporting device is arranged, so that the stability of supporting and fixing the atmospheric particulate sampler on the inner side of the narrow space is improved through two times of adjustment work, and the phenomenon that a traditional atmospheric particulate sampler is inconvenient to support on the inner side of the narrow space by using a tripod is avoided; and the application range of the atmospheric particulate sampler is expanded to a certain extent.

The invention relates to the technical field of air particulate matter sampling equipment, and discloses a multi-membrane environment air particulate matter sampler which comprises an electric box, an extraction pipe is fixedly connected to the top of the electric box, and an air pump is fixedly connected to the bottom of the electric box. When the chute plate moves towards the right side, a sliding rod slides along the inner wall of a chute of the chute plate, the sliding rod drives a toothed bar II to slide downwards along the inner wall of a sliding rail IV, and meanwhile, the toothed bar II drives a toothed bar I to slide upwards through a gear, so that two cylinders I are separated from each other; one end, far away from a chute plate, of a sliding frame II is in contact with the side wall of a sliding plate, the sliding plate at the bottommost part is driven to enter the inner wall of a sliding rail III along the inner wall of a sliding frame I, and the original sliding plate is replaced, then an electric telescopic rod shrinks, a sealing mechanism gets close to each other again, and a new filtering assembly is clamped; the process of replacing the filter assembly is simplified, and the equipment replacement efficiency is improved.

1. Name of the product in this design: Gas Flow Calibrator. 2. Application of this design: Used for calibrating the flow rate and pressure of sampling and gas detection instruments such as VOCs samplers, air samplers, particulate matter samplers, and smoke and dust testers. 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.

The utility model relates to the technical field of membrane seats, in particular to a membrane seat of a particulate matter sampler, and provides the membrane seat of the particulate matter sampler, which is convenient for taking out a filter membrane body and reduces the trouble degree of taking out the filter membrane body by a worker. Comprising a filter membrane body and further comprises a mounting frame, a metering pump, a mounting pipe, a mounting seat, a first sleeve, a second sleeve and a mounting assembly, the metering pump is mounted in the mounting frame, the bottom end of the mounting pipe is connected with the metering pump, the mounting pipe is mounted on the mounting frame, the mounting seat is communicated with the top end of the mounting pipe, a first groove is formed in the mounting seat, and the filter membrane body is placed in the first groove; the first sleeve is slidably sleeved with the first groove, the bottom end of the first sleeve is tightly attached to the filter membrane body, the first sleeve is connected with the second sleeve, the first sleeve is connected with the second sleeve through multiple sets of mounting assemblies; the ejection assembly is used for ejecting out the filter membrane body.

The present invention belongs to the technical field of dust removal testing for fully mechanized tunneling roadways, and particularly relates to a dust removal test system for fully mechanized tunneling roadways with adjustable cross-sections; it includes a simulated roadway arranged on the ground, a simulated ventilation device, a dust removal device, a wind speed distribution testing device, a dual-channel particulate matter concentration continuous online monitor, a dual-channel particulate matter sampler, and a data acquisition device in the simulated roadway. The air supply air duct of the simulated ventilation device is erected on the automatically moving devices arranged at intervals; the wind speed distribution testing device is arranged in different cross-sections in the simulated roadway; a air volume measuring device is provided at the air suction port of the air suction air duct of the dust removal device, and a dust removal fan is configured at the rear end; a data acquisition device is arranged outside the simulated roadway, and the data acquisition device displays the air volume at the air outlet and air suction port of the air duct in real time, monitors the wind speed and air volume conditions of the specified cross-section in the simulated roadway in real time, displays the dust conditions in the roadway in real time, and monitors the operating states of each device.

The invention provides a particulate matter sampler with a self-learning and self-adaptive calibration function, and relates to the field of particulate matter sampling, the particulate matter sampler comprises a sampling head, a sucking pump, a flowmeter, a gas circuit pipeline, a multi-parameter sensing module, a control terminal and a self-calibration execution unit; the sampling head is communicated with a sucking pump through a gas path pipeline; a flow meter and a multi-parameter sensing module are arranged in the gas path pipeline; the self-calibration execution unit comprises an electric three-way ball valve, a built-in standard critical hole calibration module and a self-cleaning device; three interfaces of the electric three-way ball valve are respectively connected with a gas circuit pipeline between the flowmeter and the sucking pump, an outlet of the standard critical hole calibration module and a blowback gas port of the self-cleaning device; an inlet of the standard critical hole calibration module is connected with a gas path pipeline between the sampling head and the flowmeter; the control terminal comprises an LSTM prediction unit and is electrically connected with the flow meter, the sensor, the air pump and the self-calibration execution unit. The problem of high maintenance cost of the online particulate matter sampler is solved, the maintenance period can be prolonged, and the maintenance cost is reduced.

The utility model discloses a high negative pressure environment air particulate matter sampler, and belongs to the technical field of environment monitoring equipment, the high negative pressure environment air particulate matter sampler comprises a sampler body, the sampler body is communicated with a sampling head, the sampling head is in threaded connection with the sampler body, and one side of the sampler body is provided with a display screen and operation keys. The device has the effect of improving the dismounting and mounting efficiency of the filter membrane of the sampler.

The utility model relates to the technical field of atmospheric monitoring, and particularly discloses an atmospheric particulate sampler which comprises a sampler main body, a collecting mechanism used for alternately storing collected particulates is arranged at the discharge end of the sampler main body, the collecting mechanism comprises a support body, the support body comprises a cavity arranged at the bottom, a bottom cover is arranged at the lower end of the cavity, and the bottom cover is arranged on the bottom of the sampler main body. A collecting assembly is arranged in the supporting body, and a material taking opening is formed in the front side of the supporting body. Through the arrangement of the collecting mechanism, after particulate matters in gas are separated by the sampler main body and fall down into a collecting barrel, the collecting barrel is driven to rotate along with the supporting table through the rotating assembly, so that when the collecting barrel rotates to a placing hole under the support of the pushing assembly, a cover plate in the placing hole covers the collecting barrel, and then the collecting barrel enters a sinking table and rotates to a material taking opening; and meanwhile, the collecting barrel at the other position of the supporting table rotates to the lower end of the sorting barrel to be aligned with the communicating hole, so that the collecting barrel is connected and replaced, and the use convenience is improved.