30 results about "Atmospheric dust" patented technology

The invention relates to the technical field of atmospheric dust pollution prevention and environmental protection, and discloses a multi-objective optimization layout method for dust monitoring points of a bulk cargo port, which comprises the following steps: processing historical meteorological data and port geographic information, and calculating the comprehensive evaluation concentration of each candidate grid point in combination with a pollutant diffusion model; constructing a multi-target nonlinear mixed integer programming model taking maximization of environment sensitive point coverage and minimization of concentration interpolation deviation as target functions, wherein the model comprehensively considers multiple reality constraints; solving the model by adopting an improved genetic algorithm to obtain an optimal solution set capable of forming tradeoff among different targets; and carrying out quantitative evaluation on the solution set through preset monitoring area coverage rate and monitoring accuracy indexes, and determining an optimal monitoring point position layout scheme. According to the invention, a scientific and quantitative optimized layout scheme can be provided for bulk cargo port dust monitoring, and the reliability and spatial representativeness of a monitoring network are improved.

The invention relates to the technical field of particulate matter source analysis, and discloses a refined source analysis method and system.The method comprises the steps that a plurality of pollution sources and dust falling particulate matter sampling points are determined according to soil pollution distribution of a target area and an atmospheric pollution source survey result, by collecting single particle mass spectrum data of pollution sources, sampling points and receptors, constructing a mass spectrum library and combining an ART-2a algorithm and a deep learning model, the heavy metal pollution contribution proportion is accurately analyzed and traced to specific discharge ports of enterprises, and the problem that specific pollution enterprises and working sections cannot be positioned in the prior art is solved. According to the method, a pollution source and an environment receptor are sampled and analyzed by utilizing a single-particle mass spectrometry technology aiming at atmospheric dust fall particles in soil, and the heavy metal in the atmospheric dust fall particles in the soil is finely traced to specific enterprises and working sections by analyzing the heavy metal, so that a fine technical support is provided for soil heavy metal pollution management and control.

The invention relates to the technical field of wood board processing gas filtration, and discloses an atmospheric dust removal device for high-frequency hot-pressing wood-plastic composite veneer processing, the atmospheric dust removal device comprises a tank shell, the outer wall of the tank shell is provided with a water level observation line, the bottom of the tank shell is fixedly connected with a support frame, the top of the tank shell is internally provided with a transmission fixed column, and the transmission fixed column is fixedly connected with the support frame. A filtering mechanism is arranged at the top of the tank shell, an air dispersing mechanism, a first reciprocating lead screw, a reciprocating moving rod and an inclined material guiding plate are arranged in the tank shell, the air inlet rotating opening is rotationally connected to the inner wall of the tank shell, and the first reciprocating lead screw is rotationally connected to the inner wall of the tank shell; in the rotating process of the material closing piece, blockage to the feeding pipe is lost, then sodium hydroxide is discharged from the material closing piece, then the sodium hydroxide is mixed with reciprocating movement of the spoiler under rotating stirring of the spraying head, smoke, ammonia water and sodium hydroxide in the material closing piece are mixed, reaction is promoted, and therefore formaldehyde generated by gas in plate machining is better removed.

The invention discloses atmospheric dust suppression equipment for building construction excavation, and relates to the technical field of building equipment. The device comprises a supporting frame, an electric rotating rod is rotatably mounted at the bottom of the inner wall of the supporting frame, a U-shaped plate is fixedly mounted at the top of the electric rotating rod, two connecting rods are symmetrically arranged in the U-shaped plate, a spraying mechanism is arranged between the sides, close to each other, of the two connecting rods, and a transmission rod is arranged in the spraying mechanism. Through the arrangement of structures such as the sliding groove base, the spraying mechanism is promoted to achieve fixed and movable use modes, the actual application range is expanded, meanwhile, a square frame expands the interception range of the dustproof mechanism, the dustproof mechanism absorbs water mist, waste caused by rapid air drying of the water mist sprayed to the high position in the falling process is avoided, and the practicability is high. And when the wetted dustproof mechanism blows wind, dust raised on the ground is adsorbed and inhibited in time, and the dust suppression efficiency is improved.

The invention relates to the technical field of atmospheric dust fall, in particular to green dust fall equipment for building construction. Comprising a water pump and a water pipe connected with the water pump. The water pipe is communicated with a three-way joint; a branch opening of the three-way joint is rotationally and hermetically connected with a rotating sleeve; the end, away from the three-way connector, of the rotating sleeve is rotationally connected with an end cover. The center of the inner side of the end cover is fixedly connected with a center rod; the center rod is fixedly connected with the inner wall of the three-way joint; the inner wall of the rotating sleeve is fixedly connected with blades; the blades drive the rotating sleeve to rotate under the impact of water flow; seat holes are symmetrically formed in the circumferential outer wall of the rotating sleeve; according to the device, water flow impacts the blades in the rotating sleeve and is matched with the first bevel gear and the second bevel gear, so that the spraying base drives the atomizing nozzles to rotate and revolve at the same time, the atomizing nozzles on the spraying base spray mist without dead corners, and the dust falling effect around building construction is improved.

The utility model belongs to the field of dust fall observation equipment, and particularly relates to atmospheric dust fall observation equipment which comprises a distribution box, a connecting column fixedly connected to the upper portion of the distribution box, a display screen fixedly connected to the upper portion of the connecting column, a fixing ring fixedly connected to a column body of the connecting column, and a fixing protection ring clamped to a groove of the fixing ring. A first clamping piece is fixedly connected to the middle of the fixed protection ring, an adjusting column is clamped to the first clamping piece, a protection ring is slidably connected to a column body of the adjusting column, a second clamping piece is fixedly connected to the middle of the protection ring, the second clamping piece is clamped to a column body of the adjusting column, and adjustment can be conducted according to the distance between the distribution box and the ground through the connection mode of the fixed protection ring and the adjusting column; the position of the adjusting column can be flexibly adjusted according to the use environment, the number of the protection rings clamped subsequently can be increased or decreased according to the situation, the multiple protection rings are fixed to the adjusting column, and the distribution box can be protected in multiple directions.

The utility model discloses an atmospheric dust fall sampling device with an anti-static function, which comprises a box body, the top of the box body is provided with a sampling cylinder and a static electricity eliminator for eliminating static electricity of the box body, a sampling cylinder is installed on the surface of the box body, a filter screen for filtering collected dust is installed inside the sampling cylinder, an electrostatic grounding mechanism is installed on the outer side face of the box body, and a grounding rod used for being grounded to release static electricity is installed on the electrostatic grounding mechanism. Meanwhile, the static electricity eliminator is connected with the grounding rod through a wire, when the grounding rod makes contact with the ground, static electricity is guided into the ground to be released, and therefore the anti-static effect of the device is guaranteed, the influence of the static electricity on the device is avoided, dust fall collected in the sampling cylinder can be filtered through a filter screen, the dust fall can be separated from impurities, and the practicability is high. And therefore, dust fall can be conveniently and directly collected, and subsequent screening treatment is not needed.

The invention relates to the field of dust falling devices, in particular to an adjustable dust falling device for urban and rural planning. In the prior art, air flow in the air easily enables dust falling on the ground to return to the atmosphere again, so that the atmosphere dust pollution is serious. According to the technical scheme, the adjustable dust falling device for urban and rural planning comprises a movable water tank, a telescopic supporting leg frame, a connecting cylinder and the like; the telescopic supporting foot frame is provided with a movable water tank, the movable water tank is provided with a water inlet used for being externally connected with a water pump, and a plurality of electric pulleys are arranged at the bottom of the movable water tank. The movable water tank and the telescopic supporting leg frame are jointly and fixedly connected with a connecting cylinder. According to the device, fog water sprayed into the atmosphere and dust making contact with the fog water are intercepted through the collecting table, and the problems that due to the fact that the fog water directly falls on the ground, the dust accumulation amount on the ground is large, airflow in the air easily enables the dust falling on the ground to return to the atmosphere again, and the atmospheric dust is seriously polluted again are solved.

The utility model relates to the technical field of atmospheric dust fall sampling devices, in particular to an anti-overflow atmospheric dust fall sampling device capable of automatically supplementing liquid, which comprises a sampling component, a sampling port is arranged at the top of the sampling component and positioned on one side of a handle, and a storage chamber is arranged on one side of the sampling component far away from an operation panel. A sampling bottle and a liquid storage bottle are arranged in the storage chamber, a first liquid level sensor is arranged in the sampling bottle, a second liquid level sensor is arranged on one side in the liquid storage bottle, a control assembly is arranged on one side of the storage chamber, and a suction pump is arranged between the sampling bottle and the liquid storage bottle and located at one end of the mounting pipe. By arranging the first liquid level sensor, the electromagnetic valve and the control assembly, the atmospheric dust fall sampling device can automatically supplement absorption liquid into the atmospheric dust fall sampling device, the operation is simple and convenient, and the supplement amount can be effectively controlled, so that unnecessary troubles caused by overflow of the supplemented liquid can be avoided.

The present application relates to atmospheric dust sampling technology field, especially to a kind of dry and wet precipitation co-collection sampler, including guide rail, support, settling cylinder, dry precipitation counterweight, wet precipitation counterweight, dry precipitation pull rope, wet precipitation pull rope, dry precipitation cover plate, wet precipitation cover plate;The settling cylinder is provided with one support at each end;The settling cylinder includes a dry precipitation cylinder and more than one wet precipitation cylinder;Dry precipitation cylinder and wet precipitation cylinder are arranged in parallel with interval;Along the direction of settling cylinder arrangement, support top is paved with guide rail;Guide rail top is provided with dry precipitation cover plate and wet precipitation cover plate, and dry precipitation cover plate and wet precipitation cover plate are movably connected with guide rail;The one end of the dry precipitation pull rope is connected with the dry precipitation counterweight, passes through the support and the bottom of the wet precipitation cylinder, and is connected with the dry precipitation cover plate;The one end of the wet precipitation pull rope is connected with the wet precipitation counterweight, passes through the support, the bottom of the wet precipitation cylinder, and is connected with the wet precipitation cover plate.

The invention discloses a treatment mechanism for dust suppression in tunnel metamorphic rock fault breaking construction, and relates to the technical field of atmosphere dust suppression treatment. The dust suppression device comprises a dust suppression adjusting mechanism, a regulation and control supporting assembly is fixedly arranged below the dust suppression adjusting mechanism, the regulation and control supporting assembly is rotationally connected with the dust suppression adjusting mechanism, and two opening and closing assemblies are symmetrically arranged on one side face of the dust suppression adjusting mechanism. Atmospheric dust suppression is achieved through spraying of the dust suppression adjusting mechanism, meanwhile, the position of the dust suppression nozzle can be adjusted, then the spraying mode is adjusted, the supporting assembly is adjusted and controlled to drive the dust suppression adjusting mechanism to swing up and down and rotate, and then the radiation range of spraying is adjusted; the opening and closing assembly adjusts the spraying radiation range of the dust suppression adjusting mechanism in the corresponding spraying mode, position switching of the dust suppression spray heads between linear arrangement and annular arrangement is achieved, different dust suppression operation requirements are conveniently met, the size of a spraying outlet is adjusted, and pre-humidifying treatment is conveniently carried out in a specified range.

The present application relates to a kind of atmospheric dust processing device for environmental protection, including rack, rotatingly connected with mounting seat on the rack, rotatingly connected with cannon barrel on the mounting seat, the rear end of the cannon barrel is provided with fan, and electric push rod is rotatingly connected between the cannon barrel and mounting seat.The present application has the advantages that: break the traditional whole air supply structure, realize the independent control of air supply and spray in partition, solve the problem of water mist drop point concentration, uneven coverage from the root.Each row of spray pipe can be individually adjusted air intake and air speed, can independently control each row of spray distance and conveying capacity, realize gradient spray from top to bottom, form continuous, uniform, closed long narrow mist curtain.Can be freely switched between two working conditions of concentrated spray and gradient spray, can take into account the needs of concentrated dust fall and long narrow area dust fall.Avoid local water accumulation and material overwetting, realize full coverage efficient dust suppression, significantly improve dust control effect and use flexibility.

The utility model relates to the technical field of atmospheric dust fall, in particular to an atmospheric dust fall sample treatment device. According to the technical scheme, the dust collection device comprises a dust collection cylinder, a threaded pipe is fixedly connected to the bottom of the dust collection cylinder, a sleeve is in threaded connection with the interior of the threaded pipe, a telescopic groove is formed in the sleeve, a rotating rod is rotationally connected to the interior of the telescopic groove, and a wind shield is fixedly connected to the exterior of the rotating rod. The dust collecting cylinder, the threaded pipe, the sleeve, the rotating rod, the wind shield, the rubber pad, the sliding rod and the threaded pipe are matched with one another. According to the device, the wind shield is driven by wind power to change the position, the wind shield drives the sleeve and the dust collecting cylinder to move, the dust collecting cylinder rotates in the positioning pipe through the sliding rod when stressed, it is ensured that an opening of the dust collecting cylinder faces the position where wind blows, and the problem that the position of the dust collecting cylinder needs to be adjusted many times by measuring the wind direction in the past is solved; and the angle adjustment convenience of the dust collection cylinder is improved.

The invention relates to the technical field of dust removal for corrugated paper production, and discloses an atmospheric dust removal device for corrugated paper production, which comprises a holder, the top surface of the holder is fixedly connected with a treatment box, the treatment box is internally provided with a filtering mechanism, the inner wall of the treatment box is fixedly connected with an air inlet pipe, and the inner wall of the air inlet pipe is fixedly connected with an air outlet pipe. A bottom box is fixedly connected to the bottom of the treatment box, a main shaft is rotatably connected to the inner wall of the treatment box, a water spraying mechanism is arranged on the inner wall of the treatment box, a treatment mechanism is arranged on the inner wall of the treatment box, an air outlet pipe is arranged on the front side of the treatment box, and an air inlet pipe is arranged on the rear side of the treatment box; the filtering mechanism comprises a filtering bottom plate, the filtering bottom plate is fixedly connected to the inner wall of the treatment box, and an air stirring plate is fixedly connected to the circumferential surface of the main shaft. According to the device, paper scraps and paper lint floating in air in a production workshop are effectively removed, and the health and safety of production personnel are guaranteed.

The invention discloses an automatic spraying dust suppression system and method for a port. The system comprises a dust sensor, a cloud server, a PLC control cabinet and a spraying device. The plurality of dust sensors acquire dust concentration data of different positions of a target area, and the cloud server comprises a water resource scheduling module and a spraying system control module; the water resource scheduling module is used for matching corresponding water demands and spraying parameters according to the dust concentration data; the spraying system control module is used for generating a corresponding control instruction according to the spraying parameters and sending the control instruction to the PLC control cabinet; the PLC control cabinet adjusts operation parameters of the spraying device according to the control instruction; and the spraying device receives the adjusted operation parameters and carries out spraying dust suppression on different positions of the target area. According to the invention, based on the relationship among the dust concentration, the water demand and the spraying parameters, the intelligent linkage among the atmospheric dust monitoring, the spraying system and the water supply system is realized, the data function is fully excavated, and the dust suppression effect is improved.

The utility model relates to the technical field of atmospheric dust removal, in particular to flue gas dust removal equipment for preventing and controlling atmospheric pollution, which comprises a discharge cavity and a communication cavity, the upper end of the discharge cavity is fixedly communicated with the communication cavity, and one end, far away from the discharge cavity, of the communication cavity is fixedly communicated with a gas inlet cavity; a dust removal component is installed between the air inlet cavity and the discharging cavity and comprises a sliding plate, an air bag, a supporting plate, a water flowing cavity and a collecting cavity, the two ends of the sliding plate are slidably connected to the two sides of the discharging cavity respectively, the air bag is fixedly connected between the sliding plate and the outer surface of the communicating cavity, the supporting plate is fixedly connected into the discharging cavity, and the water flowing cavity is communicated with the collecting cavity. According to the device, along with continuous horizontal reciprocating movement of the sliding plate, liquid medicine in the water storage cavity can be sprayed into the supporting plate, cooling and dust falling effects can be achieved on flue gas passing through the supporting plate and the water flowing cavity, and meanwhile acid gas in the flue gas can be neutralized through alkaline substances in the liquid medicine.

The application discloses a large air dust removal device for subway tunnel construction and belongs to the technical field of tunnel safety devices, in particular relates to a dust fall and removal device during subway tunnel construction. The device comprises a base and a water curtain mechanism, further comprises a rotary lifting mechanism, the water curtain mechanism is rotatably arranged on the base through the rotary lifting mechanism, a water curtain recovery mechanism, a sewage filtering mechanism and a sewage purification mechanism are arranged on the base, the water curtain recovery mechanism recovers the water curtain, is used for filtering of the sewage filtering mechanism and purification of the sewage purification mechanism, and the purified water reenters the water curtain mechanism. The device forms a water curtain by directly spraying water, improves the dust capture efficiency in the air, is provided with a recovery device, can recover part of the sprayed water for secondary use, reduces the waste of water source, and can also control and reduce the tunnel haze concentration.

1. Name of the product in this design: Atmospheric sampling tube. 2. Purpose of this design: for atmospheric sampling in atmospheric dust concentration detection equipment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

To protect critical infrastructure from the adverse effects of volcanic ashfall, a natural phenomenon in Japan, we aim to provide a long-life filter system that can be used even during prolonged volcanic ashfall, and to meet the demand for proposals for volcanic ash filter systems. This system will protect major facilities and equipment from atmospheric volcanic ash or fine dust, ensure business continuity in emergencies, and protect defense facilities of national security agencies. The goal is to provide a long-life atmospheric dust filter system that blocks volcanic ash and atmospheric dust, allowing essential equipment such as cooling systems for critical machinery and facilities to always function normally. [Solution] A filter device in which a substantially corrugated filter material is attached to the filter surface, characterized in that the filter material is made of a material that prevents deformation of the attached shape of the filter material by air passing through the filter surface.

The invention discloses an energy-saving and environment-friendly irrigation device for a mine reclamation area, and belongs to the technical field of mine plant planting. Comprising an operation control box as well as an intelligent operation control system, an additive container and a transfer box which are arranged in the operation control box, and is used for irrigating plants planted in the mine reclamation area, and the influence of all adverse factors such as dust pollution, soil water shortage, nutrient deficiency and heavy metal stress in the plant growth process is comprehensively considered and eliminated; an irrigation scheme is customized in a targeted manner based on a plant species characteristic reference scientific basis, and starting parameter limits are set by referring to atmosphere and soil monitoring data in a plant growth environment, so that the irrigation mode, the irrigation amount, the irrigation time, the additive types and the like of the device are dynamically adjusted, and energy consumption and water consumption are saved; meanwhile, the adjusting effectiveness of the irrigation device on the soil environment most suitable for plant growth is guaranteed, a certain dust falling effect is achieved, and the device is suitable for large-area single plant planting in mine reclamation areas and plant growth areas where atmospheric dust pollution is serious.

The utility model discloses atmospheric pollution treatment equipment with a dust removal function, which relates to the technical field of atmospheric dust removal and comprises a device body used for supporting and protecting atmospheric pollution treatment parts with the dust removal function; the cleaning assembly is located at the bottom end in the device body. According to the device, a ferric sulfate solution is added through the liquid adding port, pollution gas enters the solution through the multiple sets of vent pipes, internal dust reacts with the solution, the reacted atmosphere is discharged through the gas outlet pipe, after use, the reacted ferric sulfate solution is discharged through the liquid discharging port, meanwhile, internal caked impurities fall into the collecting tank, the baffle is opened, and the waste gas is discharged through the gas outlet pipe. An asynchronous motor is started, the asynchronous motor drives a driving belt wheel to drive, meanwhile, a transmission belt wheel is driven to rotate through a belt, two sets of threaded rods are made to rotate, impurities in a collecting groove are pushed to a baffle, the impurities are collected in a unified mode through a collecting box, the device facilitates cleaning and collecting work of the impurities, and the complexity of manual collecting work is reduced.

The application relates to the technical field of atmospheric dust fall, in particular to a green dust fall equipment for building construction; the equipment comprises a water pump and a water pipe connected with the water pump; the water pipe is communicated with a three-way joint; the branch opening of the three-way joint is rotationally and sealingly connected with a rotating sleeve; one end, away from the three-way joint, of the rotating sleeve is rotationally connected with an end cover; the inner side of the end cover is fixedly connected with a center rod; the center rod is fixedly connected with the inner wall of the three-way joint; the inner wall of the rotating sleeve is fixedly connected with a blade; the blade is driven to rotate the rotating sleeve under the impact of water flow; the circumferential outer wall of the rotating sleeve is symmetrically provided with a seat hole; the blade in the rotating sleeve is matched with a first bevel gear and a second bevel gear under the impact of water flow, so that the spray seat drives the atomizing nozzles to simultaneously rotate and revolve, and the atomizing nozzles on the spray seat perform dead-angle-free spraying, thereby improving the dust fall effect around the building construction.

This invention relates to a vacuum semiconductor chip transfer box, primarily addressing the risks associated with existing transfer fixtures, such as uncontrollable adhesive adhesion, easy adhesive detachment leading to chip fixation failure; subsequent processes requiring chip cleaning and adhesive removal reduce production efficiency, increase production costs, and pollute the environment; and the adhesive's cleanliness and viscosity decrease after contact with atmospheric dust, rendering the transfer fixture a disposable item and causing resource waste. The box includes a box body, a lid, a sealing device, and spacers. The box body comprises a base plate and side plates; the base plate has multiple connecting vents and mounting holes on its underside, all of which communicate with the mounting holes; multiple support pillars are located on the inner side of the base plate, with air channels between adjacent support pillars, and the connecting vents communicating with the air channels; the spacers abut against the support pillars, are connected to the side plates around their perimeter, and have multiple placement compartments; the spacers also have multiple ventilation holes.

The utility model discloses an atmospheric floating dust content detection device, which comprises a bottom plate, a box body, a fan, an exhaust tube and a collection box, the box body is erected on the top surface of the bottom plate, the whole box body is of a hollow cylindrical structure, the fan is arranged on the top surface of the box body, the exhaust tube is arranged on the lower part of the box body, and the collection box is arranged on the bottom plate. The exhaust pipe is communicated with the interior of the box body, a complete airflow channel is formed among the exhaust pipe, the box body and the fan, a collecting box is installed at the bottom of the box body, the whole collecting box is of a frustum structure, and the collecting box and the box body are in a communicated state; the utility model provides an atmospheric floating dust content detection device which solves the problems that in the existing dust impurity collection operation, dust is mostly blocked at a filter screen, a collection box needs to be manually opened, the filter screen needs to be scraped off, and then the dust can be collected, so that manual operation is inconvenient, the operation complexity is improved, and the operation time is shortened. And moreover, the potential safety hazard of absorbing floating dust by workers is easily caused.

The invention relates to the technical field of atmospheric dust pollution prevention and environmental protection, and discloses a wharf atmospheric pollutant monitoring method and system based on a pollutant diffusion model. The method comprises the steps of dividing meteorological types based on meteorological data and determining the occurrence probability of the meteorological types; pollutant types are determined according to port operation characteristics, and grid division is carried out; simulating pollutant diffusion by adopting a diffusion model and calculating the evaluation concentration of each grid; establishing a coordinate system to determine potential layout point coordinates; quantizing the influence of external factors by using a fuzzy evaluation technology, generating a fuzzy evaluation matrix and preliminarily screening grids; performing condensation type clustering analysis on the screening result; and finally, determining an optimal layout point by combining a clustering result and a monitoring requirement. According to the method, the diffusion model, the fuzzy evaluation and the clustering analysis technology are fused, the defects that a traditional method is high in subjectivity and insufficient in scientificity are overcome, pollutant space distribution characteristics can be accurately reflected, and effective technical support is provided for precise treatment of port atmospheric pollution.

The invention discloses road construction earth excavation atmospheric dust suppression equipment, and belongs to the technical field of road construction. The water inlet pipe is fixedly connected to the left side of the vertical pipe; the conveying pipe is fixedly connected to the other end of the water inlet pipe; and the water outlet pipe is fixedly connected to the other side of the water inlet pipe. Water flow of equipment is used as a power source to drive the turbine impeller to rotate, horizontal rotating motion is converted into revolution of the spraying pipe through gear transmission, and the spraying pipe swings up and down while revolution is achieved in combination with a cam block and an elastic piece structure. According to the composite motion mode of rotating and swinging, the spray head can cover a three-dimensional and wide space area, the coverage area of water mist is remarkably enlarged, and compared with fixed spraying, atmospheric dust in an excavation area can be effectively restrained with higher efficiency and lower water consumption.

An atmospheric dust particle size measuring mechanism, characterized in that, comprising: mechanism main body, mechanism main body is hollow cylinder, mechanism main body side wall is provided with first connecting hole and third connecting hole;Detection mechanism, detection mechanism is detachably fixed in mechanism main body through first connecting hole;Exhaust mechanism, exhaust mechanism is detachably fixed in mechanism main body through third connecting hole, and wind force successively passes through detection mechanism and exhaust mechanism when exhaust mechanism operates.The invention is used to extract air to the direction of detection mechanism by exhaust mechanism, and the wind force is measured by the particle size instrument of the detection mechanism after entering the mechanism main body, and the mechanism main body protects the particle size instrument, avoiding the influence of the environment.And when the particle size instrument, fan and filter screen need to be replaced, only by the method of removing the first clamping piece, second clamping piece and third clamping piece from the mechanism main body can the filter screen, fan and particle size instrument be replaced.

The invention discloses an atmosphere dust removal device for subway tunnel construction, belongs to the technical field of tunnel safety devices, and particularly relates to a dust falling and removing related device during subway tunnel construction. The device comprises a base and a water curtain mechanism and further comprises a rotary lifting mechanism, the water curtain mechanism is rotatably arranged on the base in a lifting mode through the rotary lifting mechanism, a water curtain recycling mechanism, a sewage filtering mechanism and a sewage purifying mechanism are arranged on the base, and the water curtain recycling mechanism recycles a water curtain and is used for filtering of the sewage filtering mechanism and purifying of the sewage purifying mechanism. And the purified water enters the water curtain mechanism again. According to the device, a water curtain is formed by directly spraying water, the capturing efficiency of dust in the atmosphere is improved, meanwhile, a recycling device is arranged, part of sprayed water can be recycled for secondary utilization, water source waste is reduced, and the concentration of haze in the tunnel can be controlled and reduced.

The present application relates to the technical fields of atmospheric dust sampling, in particular to a special sampler for wet deposition, comprising a settling cylinder, a support, a cover plate, a water collecting tank, a cover plate counterweight, a balancing assembly and a counterweight; the settling cylinder is cylindrical, and supports are arranged at both ends of the settling cylinder; the bottom of the settling cylinder is higher than the bottom of the support; a balancing assembly is arranged on the top of the support; the top of the balancing assembly is flush with the top of the settling cylinder; two identical cover plates are arranged on the top of the settling cylinder along the central axis of the settling cylinder; the cover plates are movably connected with the balancing assembly; the cover plates extend out of the settling cylinder and are provided with a water collecting tank; a cover plate counterweight is arranged on the top of the inner side of the cover plate; the water collecting counterweight is arranged on the side of the support away from the settling cylinder; and the balancing assembly is connected with the counterweight and the bottom of the settling cylinder. The present application can shield dry deposition and wind sand, automatically open the top cover when it rains, reduce the interference of dry deposition, and has no power, simple design and great promotion advantages.

The invention provides an environment-friendly atmosphere control dust removal device, and belongs to the field of atmosphere dust removal, the environment-friendly atmosphere control dust removal device comprises a base, a dust removal assembly comprises two transmission rollers which are rotatably mounted in a dust removal box and are distributed up and down, the transmission roller on the lower side is located in clear water, and a motor for driving the transmission rollers to rotate is mounted on the dust removal box; the draught fan works to blow air to the rotating and moist net-shaped conveying belt and the dust filtering net, the dust filtering net rotates into the clean water along with the net-shaped conveying belt, and the clean water can wash the dust filtering net. Self-cleaning of the dust filtering net can be achieved, and continuous and efficient dust filtering is ensured; a water circulation filtering system saves water resources, keeps clean water clean and improves the dust removal effect; dust is efficiently separated, dust accumulation is reduced, and the service life of the device is prolonged; operation is convenient, and the upper cover can be easily taken down for maintenance; equipment protection is good, and stability is improved; self-cleaning and water circulation are achieved, manual maintenance is reduced, and long-term stable operation is guaranteed.