11 results about "Particulate matter sampler" patented technology

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.

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.

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 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 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.