9 results about "Atmospheric contamination" patented technology

This invention belongs to the field of air pollution detection technology, specifically relating to an air pollution control sampling device. It includes a sampling cylinder, a sampling tube connected to the side wall of the sampling cylinder, and a second annular protrusion located inside the sampling tube near the sampling cylinder. A connection area is formed by the boundary line between the sampling cylinder and the sampling tube, with a first mounting groove at the center of the connection area. An anti-backflow component is provided between the first mounting groove and the second annular protrusion, and an air inlet is provided around the periphery of the first mounting groove. A first sealing plug is used to seal the sampling tube. This invention prevents backflow during the sampling process by incorporating an anti-backflow component at the connection between the sampling cylinder and the sampling tube, thus avoiding backflow.

The invention relates to the technical field related to air pollution prevention and control, discloses a rapping dust removal device of an electrostatic dust collector and a dust removal method of the rapping dust removal device, and aims to solve the problem that fixed rapping strength cannot adapt to adjustment requirements of different working conditions. When the dust removal gear motor drives the driving ejector rod to eject the dust collection assembly through the driving ring, the dust collection assembly compresses and accumulates force on the push spring, after the driving ejector rod is separated from the dust collection assembly, the dust collection assembly impacts on the dust vibration rod under the pushing of the elastic force of the push spring, and therefore dust removal work of the dust collection assembly is achieved through vibration generated by impact. In the process, the moving distance of the driving ejector rod pushing the dust collecting assembly can be adjusted by adjusting the length of the driving ejector rod screwed into the driving ring, the impact strength between the dust collecting assembly and the dust vibrating rod is changed by changing the compression length of the dust collecting assembly on the push spring, and finally the effect that the vibrating strength is adjustable is achieved.

The invention relates to the technical field of environmental monitoring and atmospheric pollution prediction, and particularly discloses a multi-pollutant concentration prediction method and system based on space-time attention and a gating reset cycle network. According to the method, multi-source data are collected, and space-time alignment under the hour-level time resolution is completed; performing multi-layer extraction on the aligned features to obtain high-level semantic representation; fusing the key space region and the time slice based on a space-time attention module to obtain space-time weighted features, and outputting mixed features after convolution; inputting the mixed features into an attention enhancement gating circulation module according to time steps to generate a hidden state sequence, and outputting a time step or multi-step foresight prediction result through a prediction and regularization module; during training, the Smooth L1 loss is taken as a target, and an Adam optimizer is combined with cosine annealing learning rate scheduling to complete model optimization. The method can significantly reduce prediction errors in single-step and multi-step foresight scenes, and has high precision and stability.

The invention provides a visual atmospheric pollution monitoring and analyzing device. The visual atmospheric pollution monitoring and analyzing device comprises a mounting plate; the supporting rod is fixedly connected to the top of the mounting plate, movable rails are arranged on the front face and the back face of the supporting rod, through limiting rails are arranged on the two sides of the supporting rod, and a first pulley is fixedly connected to the position, close to the bottom, of one side of the inner wall of the supporting rod; a second pulley is fixedly connected to the top of the inner wall of the supporting rod through a top plate, a mounting shell is fixedly connected to the position, close to the bottom, of one side of the supporting rod, and a protective shell is fixedly connected to the front face of the mounting shell. According to the visual atmospheric pollution monitoring and analyzing device provided by the invention, the range of atmospheric pollution monitored by the visual atmospheric mobile monitoring equipment can be increased through the structure, acquisition of atmospheric pollution data at different heights is facilitated, data with more reference can be obtained through analysis of the data visual analyzing equipment, and later reference is facilitated.

The utility model discloses a dedusting mechanism for air pollution control, which comprises a pretreatment box, a filter screen cylinder is arranged in the pretreatment box, the top end of the side wall of the filter screen cylinder extends to the outer side of the pretreatment box and is provided with an air inlet pipe, the bottom end of the side wall of the pretreatment box is provided with a first connecting pipe, and the air inlet pipe is sleeved with a cooling box. A spiral guide vane is arranged between the interior of the cooling box and the air inlet pipe, a liquid inlet pipe and a liquid outlet pipe are arranged in cooperation with the spiral guide vane, a wall scraping structure is arranged in the filter screen cylinder, the tail end of a first connecting pipe is sequentially connected with a bag type dust collector and a reaction box, and a second connecting pipe is connected between the bag type dust collector and the reaction box. The second connecting pipe extends to the bottom end in the reaction box and is provided with an air injection assembly, and the top end of the reaction box is provided with an exhaust pipe.

The invention provides an urban night aerosol optical thickness multi-source collaborative inversion method and device based on a gradual change observation zenith angle, and belongs to the technical field of atmospheric environment remote sensing monitoring. And an atmospheric radiation transmission model suitable for the night is constructed, and high-precision inversion of the urban night aerosol optical thickness is realized. The method effectively improves the spatial resolution and precision of night aerosol remote sensing inversion, and is suitable for fine monitoring of urban atmospheric pollution.

The invention relates to the related technical field of atmospheric pollution protection equipment, discloses an energy-saving device and method for a high-voltage power supply of an electric dust remover, and aims to solve the problem of energy consumption loss caused by full-power power supply of a dust collection assembly. The dust collection assembly and a dust removal box are movably connected, and a detection push spring is arranged between the dust collection assembly and the dust removal box; the overall weight of the dust collection assembly is relatively light, and the dust collection assembly is jacked up by the elastic force of the detection push spring; after the dust collection surface of the dust collection assembly continuously adsorbs dust particles, the weight of the dust collection surface is increased, a sliding ring on the dust collection assembly moves downwards along a resistance guide rod, the resistance value between the sliding ring and an electric contact on a supporting frame is reduced, and an electric signal is conveyed to the control and power supply assembly; the control and power supply assembly can improve the output power of the dust collection assembly, it is guaranteed that the field intensity on the dust collection assembly can always adsorb dust, and finally the output power of the power source is adjusted in time according to the dust collection amount of the dust collection assembly, so that the energy-saving purpose is achieved.

The invention relates to the field of air pollution control, in particular to a detection device for air pollution control, which comprises a supporting bottom plate, and a mobile driving assembly is mounted at the center of the bottom of the supporting bottom plate; a movable frame is arranged at the outer end of the sealing cover, a threaded sleeve is arranged at the bottom end of the movable frame and connected with a movable driving assembly, and a first rack plate is further installed on the inner wall of the sealing cover; the air detection mechanism is arranged at the center of the supporting bottom plate; the transmission adjusting mechanism is arranged on the supporting bottom plate and comprises a sliding frame, the bottom of the sliding frame is in sliding connection with the supporting bottom plate, the center of the sliding frame is connected with the air detection mechanism through a transmission assembly, and a second rack plate is installed on the side wall of the sliding frame; according to the air detection mechanism, work and sealing protection of the whole air detection mechanism can be effectively facilitated, and therefore use of the whole detection mechanism can be guaranteed.

This invention provides a vehicle-mounted, mobile device for precise source tracing and identification of air pollutants, relating to the field of air pollution source tracing technology. It includes a vehicle body with a drive motor inside. The output of the drive motor is connected to a transmission assembly. One output of the transmission assembly is connected to a lifting mechanism, and the lifting end of the lifting mechanism is connected to a detection system for precise source tracing and identification of air pollutants. A second output of the transmission assembly is connected to a conveying assembly. The conveying ends of the two conveying assemblies respectively and synchronously drive two opening and closing plates to move in opposite directions. The two opening and closing plates move within a notch on the upper surface of the vehicle body. A third output of the transmission assembly is connected to a lowering mechanism, and the bottom end of the lowering mechanism is connected to a suction cup. This invention integrates multi-dimensional monitoring modules for heavy metal particulate matter, VOCs, gaseous pollutants, meteorological parameters, and high-precision positioning, enabling comprehensive collection of air pollutant-related data and achieving precise qualitative and quantitative identification of pollutant components.