942results about How to "Improve air quality" patented technology

The invention provides an oil smoke real-time concentration monitoring and intelligent adjusting method and system, and relates to the technical field of intelligent control, and the method comprises the steps: collecting real-time air quality data of a catering area through a plurality of environment sensors, including oil smoke concentration, PM2.5 concentration, carbon monoxide concentration, temperature and humidity; and the control center calculates an oil smoke concentration spatial and temporal distribution field based on real-time data in combination with spatial interpolation, considers smoke exhaust energy consumption, smoke exhaust efficiency and regional oil smoke concentration, and determines an optimal cooperative control strategy by utilizing a multi-target optimization algorithm, and the optimal cooperative control strategy comprises the fan rotating speed of each range hood, the smoke exhaust direction and the air supply parameters of the fresh air system. And the control center issues the control strategy to a range hood controller to adjust operating parameters of the range hood. Dynamic optimization control over the air quality of the catering area can be achieved, the oil smoke concentration is reduced, energy is saved, and the smoke exhaust efficiency is improved.

The invention relates to the technical field of intelligent control, and discloses an intelligent control method and system for a laminar flow air supply unit special for an operating room, and the method comprises the steps: constructing a three-dimensional space topology model of the operating room, collecting the spatial position data of medical staff and equipment in real time in an operation process, and forming a spatial-temporal trajectory data set; analyzing the spatial-temporal trajectory data set to generate a pollution source distribution thermodynamic diagram; acquiring an environment state data flow and a personnel state data flow of the operating room, and predicting a dynamic heat and humidity load demand curve of the operating room in a future time period through a pre-trained heat and humidity load demand prediction model; based on the dynamic heat and humidity load demand curve, the operating room three-dimensional space topology model and the pollution source distribution thermodynamic diagram, a dynamic air supply control strategy is generated, and a laminar flow air supply unit is controlled to conduct intelligent air supply; the heat and humidity load demand of the operating room can be accurately predicted, the air supply strategy is dynamically optimized, and the air supply energy consumption is remarkably reduced while the cleanliness of the operating room is guaranteed.

The invention relates to an intelligent ventilation system in a tunnel and a control method thereof, and belongs to the technical field of tunnel ventilation. The intelligent ventilation system in the tunnel comprises a data acquisition unit, a ventilation unit, a control unit, a data storage unit and a data analysis unit, wherein the data acquisition units are mounted in detection sections in a tunnel, and each data acquisition unit comprises a COVI detector, a wind speed and direction detector and a traffic flow detection module; when the CO concentration and the VI exceed threshold values, the ventilation unit is controlled to enter a corresponding working mode; the data analysis unit is used for generating an early warning model according to the data of the data storage unit, and the early warning model is used for obtaining CO concentration and VI data in the future # imgabs0 # time according to the wind speed and wind direction data, the traffic flow, the vehicle type, the fuel oil type data, the CO concentration and the VI change. According to the ventilation system, intervention can be conducted before the pollution concentration is increased, the period of insufficient ventilation is effectively avoided, and it is guaranteed that good air quality is always kept in the tunnel.

The embodiment of the invention discloses a biological composite liquid material capable of releasing negative oxygen ions as well as a preparation method and application of the biological composite liquid material. The invention discloses a preparation method of a traditional Chinese medicine. The biological composite liquid material is prepared from 12 to 18 parts of plant extract, 1 to 4 parts of silver ion solution, 2 to 5 parts of titanium dioxide, 10 to 15 parts of nano silicon dioxide, 2 to 8 parts of sodium oxide, 1 to 6 parts of magnesium oxide dispersion liquid, 0.5 to 1.5 parts of calcium hydroxide solution, 1 to 3 parts of ferric oxide colloidal solution, 2 to 6 parts of zinc oxide dispersion liquid, 12 to 18 parts of mixed silica sol and 15 to 20 parts of nano borosilicate liquid material. 0.5-1.5 parts of a surfactant, 4-8 parts of glycerol and 10-15 parts of deionized water. The biological composite liquid material has the characteristic of efficiently releasing negative oxygen ions, can effectively improve the air quality, is good in stability, convenient to use, safe and reliable, can be widely applied to the fields of air purification, medical care, building materials and the like, and has a wide market prospect.

The invention belongs to the technical field of environmental sanitation machinery, and particularly relates to a high-speed low-noise centrifugal fan with an air filtering effect, the high-speed low-noise centrifugal fan comprises a fan volute, a fan impeller is mounted in the fan volute, the fan impeller comprises a front disc, a middle disc and a plurality of fan blades, the fan blades are located between the front disc and the middle disc, and the fan blades are arranged in the fan volute. A flow channel of the fan impeller is formed by the front disc, the middle disc and the space between every two adjacent fan blades, and a driving motor is installed on the rear side of the fan volute. According to the high-speed low-noise centrifugal fan with the air filtering effect, brand new plans are made on the blade shape, the blade structure, the volute, the volute tongue and the overall structure of the fan, and particularly, the cyclone separator is additionally arranged at the air inlet of the fan, so that high-speed air entering the volute of the fan is rapidly separated and purified; and dust and other garbage in the gas are settled and separated, so that the quality of air discharged into the atmosphere from an outlet of the fan is improved, and secondary pollution of environmental sanitation operation is reduced.

The invention discloses an intelligent ventilation system and method for a cage for livestock breeding, and belongs to the technical field of livestock breeding, and the system comprises an acquisition processing module, an environment modeling module, a change prediction module, an optimization decision module, a strategy simulation module, a storage safety module, an equipment control module, a monitoring feedback module, a user interaction module and an emergency response module. According to the invention, environmental conditions can be managed more actively, environmental parameters are prevented from deviating from an ideal state due to a hysteresis effect, the stress influence on animals is reduced, specific requirements of different livestock animals are met, the air quality and animal health level in an animal house are improved, the decision precision of the system is improved, and the economic benefit is increased. It is ensured that the cage environment is always kept in the most ideal state, improvement of air quality in a short term and minimization of long-term energy consumption are balanced, and the overall efficiency of the system is effectively optimized.

The invention discloses an existing anchoring and shotcreting side slope ecological restoration technology and method with shrub planting as the core, a side slope vegetation hole environment improving device and a hole filling layered structure design are included, and the side slope vegetation hole environment improving device is mainly composed of a conical threaded drill bit, a connecting rod, a motor, a metal connecting hose, a pressure storage tank and an air compressor. The motor provides power for penetration of the gas injection needle head, and the air compressor provides power for injection of the plant nutrient solution; the vegetation hole layered structure comprises a bottom water retention layer, a base fertilizer layer, a nutrient soil layer and a surface covering layer; environment improvement is conducted on the vertical and horizontal directions of the planting holes through an environment improvement device, local dominant shrubs are planted in the planting holes, and local dominant vine plants are planted at the top of the slope to comprehensively and ecologically protect the slope; comprising the following steps: step 1, investigating and surveying plant communities and analyzing slope stability; step 2, slope vegetation hole environment improvement; 3, planting hole construction; and 4, slope top vine plant ecological slope protection construction is carried out.

The invention relates to the technical field of farm disinfection, in particular to an intelligent disinfection system for a farm. The system comprises an initial determination module, a periodic disinfection module, an environment monitoring module, a first analysis control module, a second analysis control module and a feedback correction module. According to the method, the initial disinfection parameter cluster of each breeding area in the target breeding farm is determined according to the actual growth stages of the breeding targets and the actual number corresponding to each actual growth stage, each breeding area is periodically disinfected according to the initial disinfection parameter cluster, and each breeding area is monitored in real time so as to be singly judged; and performing first-class adjustment and second-class adjustment on the initial disinfection parameter cluster based on a first verification result and a second verification result in combination with the first verification result and the second verification result to determine whether the initial disinfection parameter cluster is subjected to first-class adjustment and second-class adjustment. And according to the first analysis control result and the second analysis control result, determining whether to perform feedback correction on a preset initial disinfection period of each breeding area.

The invention relates to the field of mine mining, and discloses a mine efficient mining intelligent ventilation system which comprises an intelligent monitoring module, the intelligent monitoring module is installed in a mine, environment information in the mine is collected, and the collected information is transmitted to a central control module; the intelligent monitoring module is connected with a central control module, and the central control module is the core of the whole system, receives parameter information transmitted by the intelligent monitoring module, and controls the ventilation equipment module to start according to the parameter information. According to the air purification module, various treatment modes including multi-stage filtration, oxygen supplement, catalytic oxidation, chemical spraying, adsorbent purification, catalytic combustion and the like are adopted for different harmful gases. Therefore, the system can effectively remove various pollutants in mine air, air quality is improved, and health and safety of workers are guaranteed.

The utility model discloses a pigsty ventilation system combining positive pressure ventilation and negative pressure ventilation. The pigsty ventilation system comprises a water curtain unit, a control unit, a positive pressure fan unit, a negative pressure fan unit and a sensor unit. The sensor unit comprises an odor sensor, a temperature sensor and a humidity sensor, the odor sensor acquires odor concentration information, the temperature sensor acquires temperature information, and the humidity sensor acquires humidity information; the control unit is used for receiving the odor concentration information, the temperature information and the humidity information and then generating first instruction information, second instruction information and third instruction information. The positive-pressure fan unit and the negative-pressure fan unit are combined for ventilation, information such as temperature and humidity is obtained in real time through the sensor unit, the positive-pressure fan unit and the negative-pressure fan unit are driven to work, and therefore the temperature difference between the front portion and the rear portion of the hog house is balanced, sufficient ventilation of the hog house is guaranteed, and the quality of air in the hog house is good. The device can be widely applied to the technical field of livestock feeding equipment.

The invention relates to the technical field of boiler flue gas filtration, in particular to a gas inlet device for boiler flue gas filtration. The air inlet device for boiler flue gas filtration comprises an air inlet pipeline, rotating valves, an executing mechanism, fan blades, a transmission mechanism, a cleaning pool and a perforated pipe, the input end of the air inlet pipeline communicates with a boiler body, the output end of the air inlet pipeline communicates with a dust remover, and the rotating valves are installed in the air inlet pipeline and close to the input end at equal intervals; an executing mechanism is installed between the rotating valve and the gas inlet pipeline and used for driving the rotating valve to be opened and closed so as to control the gas inlet amount of the flue gas. According to the air inlet device for boiler flue gas filtration, the amount of flue gas generated by combustion in a boiler can be monitored in real time through the integrated sensor and the control system, the opening degree of the rotating valve is intelligently adjusted according to the data, accurate adjustment of the opening degree of the rotating valve is ensured through a worm and gear and a bevel gear transmission system in the executing mechanism, and the operation efficiency is improved. Therefore, the amount of flue gas entering the dust remover can be accurately controlled.

The invention relates to a discrete dust treatment system and method, and belongs to the technical field of dedusting, the discrete dust treatment system comprises a machine body assembly, the machine body assembly is provided with an air inlet, an air outlet and a first opening, and the machine body assembly is provided with a first mounting cavity and a second mounting cavity; the filter cartridge assembly is arranged on the machine body assembly and located in the first mounting cavity, the filter cartridge assembly is provided with a filter cavity and a second opening, and the air inlet, the first mounting cavity, the filter cavity, the second opening, the first opening and the second mounting cavity are sequentially communicated; the blowing assembly is arranged on the machine body assembly, the blowing assembly is provided with an air inlet and an air outlet, the air inlet is communicated with an external air source, the air outlet is communicated with the filtering cavity, the blowing assembly is provided with an air conveying channel, and the air inlet, the air conveying channel and the air outlet are sequentially communicated. According to the discrete dust treatment system disclosed by the invention, the dust on the surface of the filter cartridge assembly is instantly blown through the blowing assembly, so that the dust cleaning efficiency is greatly improved.

The invention discloses an indoor decoration method and system, electronic equipment and a storage medium, and relates to the field of building decoration. The method comprises the steps that house data, wind pressure data and hot pressure data of a house to be decorated are obtained, wall materials and ground materials of different functional areas are determined according to the house data, the opening size and the opening mode of a window are determined according to the house data, the wind pressure data and the hot pressure data, and the position of an air conditioner air outlet is determined according to the house data; determining a target position for installing a target sensor in the target functional area according to the demand of the target functional area; accessing the controlled unit to the control unit, and adjusting the operation mode of the controlled unit by using a preset algorithm according to the data of the target sensor; and obtaining the energy consumption data every preset time, and adjusting the preset algorithm according to the energy consumption data. According to the technical scheme, on the premise that the decoration attractiveness is guaranteed, energy consumption of the indoor environment is effectively reduced.

The invention relates to a positive pressure type air purification system and method for a limited space, by constructing a relatively closed space and adopting an efficient multi-stage filtering technology, the system can quickly remove particulate matters, bacteria, viruses and harmful gases in air, and the air quality in the limited space is remarkably improved. The positive pressure control method ensures that external polluted air cannot enter, and the cleanliness of the working environment is further guaranteed. The intelligent control system achieves remote monitoring and automatic adjustment through the Internet of Things technology, the response speed and operation convenience of the system are improved, real-time data analysis and trend reports are provided, and a user is helped to better manage and maintain the system. In addition, proper working conditions are ensured through the temperature and humidity adjusting function, and therefore a healthy, safe and efficient working environment is provided for workers. According to the invention, the working conditions with strict requirements on the air cleanliness are met, and the user experience and the reliability of the system are greatly improved.

The invention discloses an ecological cabin airflow regulation control device and method, and belongs to the field of ecological cabin airflow regulation. An air flow adjusting and controlling device of an ecological cabin comprises a cabin wall, and further comprises a circulating unit arranged on the cabin wall and used for exchanging air inside and outside the cabin; the filtering mechanism and the second filtering plate are arranged in the circulating unit and used for blocking impurities in air during exchange, a driving mechanism and a first cleaning mechanism are arranged in the circulating unit, and the driving mechanism can drive the first cleaning mechanism to reciprocate along the filtering mechanism; a flow guide mechanism communicated with the first cleaning mechanism is arranged on one side, close to the filtering unit, of the cabin wall; according to the invention, the problems of non-uniform air distribution, high working intensity of the air filtering assembly, unstable air circulation speed and poor air quality when the ecological cabin is used for adjusting and controlling the air flow can be solved.

The invention relates to the technical field of mine ventilation, in particular to a safe and environment-friendly dust removal device for mine construction, which comprises a mine ventilation pipe, a notch is formed in the surface of the mine ventilation pipe, an assembly protection plate is inserted into the notch, two limiting frames are fixed on the inner ring surface of the assembly protection plate, and the limiting frames are inserted into the mine ventilation pipe. A mounting frame is mounted on the surface of the limiting frame, an activated carbon plate is arranged in the mounting frame, a first metal fine mesh plate is arranged in front of the mounting frame, a brush plate is rotationally connected to the front of the first metal fine mesh plate, and a liquid collecting groove is formed in the inner ring surface of the splicing protective plate; the mine protection plate has the beneficial effects that the activated carbon plate and the metal fine mesh plate are arranged on the inner ring surface of the assembled protection plate, dust and particulate matter in air are effectively blocked, harmful gas in the air is further purified through the adsorption effect of activated carbon, and the quality of the air entering a mine is ensured; and the assembly protection plate can be detached from the bottom of the mine ventilation pipe, so that the dust removal structure can be cleaned or replaced conveniently.

The invention provides a control method, device and system of an excrement cleaning system. Relates to the technical field of pet supplies. The control method comprises the following steps: determining a current state through a weighing sensing module and an infrared sensing module; if the current state is a defecation completion state, a screening and cleaning process is executed; the opening of the connected garbage bag is opened and corresponds to the position of the discharge port of the device; and after the screening and cleaning process is finished, the opening of the garbage bag for receiving the excrement is sealed through a sealing device. According to the control method of the excrement cleaning system, the excrement cleaning efficiency is improved through the automation technology, it is ensured that excrement directly falls into the garbage bag, environmental pollution and odor emission are reduced, and the air quality and the living comfort are improved. The intelligent control reduces the health risk and the maintenance cost, and improves the user satisfaction.

The invention provides a spot welding device for manufacturing electronic components, and relates to the technical field of welding equipment.The spot welding device comprises a welding box, a box door is arranged on the welding box, air inlet pipes are installed on the side walls of the two sides of the welding box, a purifying box is fixedly installed at the upper end of the welding box, an exhaust pipe is installed in the purifying box, and the lower end of the exhaust pipe is arranged in the welding box; a suction pump is fixedly installed in the purification box, the air inlet end of the suction pump is connected with the exhaust pipe, an activated carbon adsorption plate is installed at the upper end of the purification box, the air outlet end of the suction pump is located below the activated carbon adsorption plate, a control panel is installed on the side wall of the purification box, and a mechanical arm is fixedly installed in the inner wall of the welding box; the two U-shaped frames are symmetrically installed on the inner side wall of the welding box, through the unique multi-directional clamping design, the device is suitable for electronic components of any specification, the two sides and the two ends of the electronic components are synchronously fixed, displacement and shaking in the welding process are effectively prevented, and the occurrence rate of welding defects is reduced.

The invention relates to the technical field of refrigeration equipment, and discloses an integrated top-mounted refrigerating unit which comprises a top-mounted plate, a condenser and an inner fan, the condenser is arranged at the position, close to the right end, of the top of the top-mounted plate, and an outer fan is mounted at the left end of the condenser; an outer condenser and an evaporator are arranged in the condenser; a first lower air opening and a second lower air opening are formed in the right end of the top plate and located below the condenser. The inner fan is fixedly arranged near the right end of the bottom of the top plate, the inner fan internally comprises a humidifying device, a sterilizing mechanism and an air duct, the humidifying device is installed at the left end of the inner fan, the air duct is installed in the inner fan, the left end of the air duct is connected with an air outlet, the air outlet is formed in front of the left end of the inner fan, and the sterilizing mechanism is arranged at the right end in the inner fan. According to the integrated overhead refrigerating unit, efficient heat dissipation of the condenser is guaranteed, the operation efficiency of the unit is guaranteed, the air quality is improved, and sanitation of the refrigerating environment is guaranteed.

The utility model relates to the technical field of dust removal equipment, and provides anti-blocking dust removal equipment, which is characterized in that three conical filter elements are sequentially arranged at the middle section position inside an outer tank body from top to bottom, three groups of flushing nozzles are arranged on the tank wall of the outer tank body, and each group comprises four flushing nozzles; the four flushing nozzles in one group are aligned to the surfaces of the conical filter elements, three cleaning liquid guide-out valve pipes which are communicated with the top surface spaces of the three conical filter elements respectively are arranged on the tank wall of the right side of the outer tank body, and four filter element anti-blocking scrapers are uniformly distributed on the top surface of each conical filter element; a rotary driving mechanism for driving the four filter element anti-blocking scrapers on the top surface of each conical filter element to rotate and scrape is mounted in the outer tank body; and a negative pressure air pump is mounted on the left side, close to the lower end, of the outer tank body. The dust removal equipment has the advantages of blockage prevention, efficient filtration, automatic cleaning and the like, is suitable for various industrial production places and environments, improves the air quality, guarantees the health of personnel, and is dust removal equipment with excellent performance.

The utility model discloses a flying dust reducing spraying device, which belongs to the technical field of flying dust treatment and is characterized by comprising a moving box, a fog gun machine is arranged at the top of the moving box, a water pump component is bolted on the inner wall of the moving box, a transmission pipe is fixedly communicated with the right side of the water pump component, and a flow valve is arranged on the surface of the transmission pipe. The right side of the conveying pipe fixedly communicates with a filtering box, a filtering mechanism is inserted into the inner wall of the filtering box, and the problems that most of existing flying dust reducing spraying devices are not provided with filtering structures, impurities, particulate matter or microorganisms are contained in water, the impurities, particulate matter or microorganisms are prone to being accumulated in spraying heads after being used for a long time, and spraying holes of the spraying heads become small and even are completely blocked are solved; the problems that in the prior art, in the prior art, subsequent dust falling work is affected, most dust falling devices can only conduct spraying dust falling at specific angles, an area needing dust falling cannot be effectively covered, part of flying dust cannot be restrained, and the expected dust falling effect cannot be achieved are solved.

The invention discloses an aviation kerosene production method based on vinasse waste, and belongs to the technical field of kerosene preparation, and the aviation kerosene production method comprises the following steps: pretreatment: screening and cleaning vinasse, removing impurities and water, then crushing the cleaned vinasse into particles, and drying and baking by using drying equipment; pyrolyzing: feeding the pretreated vinasse into a pyrolyzing furnace for pyrolyzing; gas purification: purifying the separated gas to remove sulfides and nitrides in the gas; fischer-Tropsch synthesis reaction: introducing the purified gas into a Fischer-Tropsch synthesis reactor to form hydrocarbon molecules; separating products: separating hydrocarbons in different boiling point ranges; product refining: further processing the separated hydrocarbon products; waste treatment: solid carbon black generated in the pyrolysis process is recycled. The device provided by the invention can reduce the dependence of existing aviation kerosene production on traditional fossil fuel, saves energy, reduces carbon emission, and is beneficial to sustainable development.

The utility model relates to a positive pressure and negative pressure combined precise ventilation hog house, which comprises a hog house body, a suspended ceiling is arranged in the hog house body, the internal space of the hog house body is divided into an upper ventilation area and a lower breeding area by the suspended ceiling, a plurality of ceiling windows are arranged on the suspended ceiling, and the suspended ceiling is connected with the hog house body. The ceiling window is communicated with the ventilation area and the breeding area. The utility model provides a ventilation system with combined use of positive and negative pressure fans, which not only can reduce the temperature in a pig house in a large area and remove dust, but also can enable fresh air to be accurately and uniformly blown away on the body surfaces of pigs, so that the air quality in the pig house is kept at a better level, and the ventilation quantity and the energy consumption are reduced while the effective wind speed is not reduced. The wind speed, the pressure and the temperature in the pig house are distributed more uniformly, and the phenomenon of heat accumulation or local supercooling of a traditional pig house is avoided.

The invention discloses a telescopic dry cleaning rolling brush of a photovoltaic power station, and relates to the technical field of dry cleaning rolling brushes, the telescopic dry cleaning rolling brush comprises a box body, a cleaning groove is formed in the bottom surface of the box body, a brush roller is rotatably arranged in the cleaning groove, a collecting groove is formed in the side wall of the cleaning groove, a fixing plate is fixedly connected to the top of the collecting groove, and the fixing plate is obliquely arranged; a plurality of tooth-shaped scraping rods are evenly and fixedly connected to the end of the fixing plate, and the ends, close to the brush roller, of the tooth-shaped scraping rods are low. According to the photovoltaic module cleaning device, in the process that the brush roller cleans a photovoltaic module, the tooth-shaped scraping rod can remove dust and dirt on the brush roller, so that the brush roller is kept in a clean state all the time, blockage caused by excessive accumulation of the dust and the dirt on the brush roller is prevented, and the cleaning effect of the brush roller is improved; the sharp tooth-shaped edge of the tooth-shaped scraping rod can penetrate into tiny gaps and concave-convex surfaces which are difficult to touch by the brush roller, so that the tooth-shaped scraping rod can scrape stubborn dirt and residues attached to the brush roller, the cleaning effect is ensured, and cleaning is more thorough.

The present invention belongs to the technical field of steel structure welding, and specifically relates to a welding auxiliary positioning device for steel structure construction, including a positioning mechanism, etc.; the positioning mechanism is provided with at least four groups, and the steel column is limited by all the positioning mechanisms in cooperation. The present invention realizes that by magnetically attracting four fixing plates to the outer surface of the lower steel column, and then manually pushing four plugs in sequence, the four plugs are all moved to the upper surface of the lower steel column, and the plugs are locked by the corresponding elastic member I, and the upper steel column is limited by all the limit blocks, so that the upper steel column and the lower steel column remain flush, by twisting all the bolts until all the limit blocks are against the surface of the upper steel column, and then the clamp I is installed on the four fixing plates, and the clamp I is locked, so that the two steel columns are tightly held and the two steel columns are kept flush, thereby realizing auxiliary positioning of the two steel columns.

The invention discloses an intelligent centralized control method and system for an air compressor unit and a storage medium, and the method comprises the steps: building a first correlation model which is used for representing the correlation between the air pressure fluctuation of each air supply node, and a second correlation model which is used for representing the correlation between the air flow temperature of a specific section in an air supply pipe network and the air pressure of each air supply node; meanwhile, corresponding fluctuation models and weight values are configured for all the air supply nodes, so that the system can predict the air pressure requirements of all the air supply nodes in the future set time period based on the current air pressure data and temperature data of all the air supply nodes, and then the air pressure requirements of all the air supply nodes in the future set time period are predicted by changing the conduction relation of the air supply nodes and the local temperature of the air supply pipe network. The air pressure of the air supply node is adjusted, the air demand at the air supply node is responded in advance, accurate control over the air pressure at the tail end of the air supply pipe network is achieved, and air pressure fluctuation at the tail end of the air supply pipe network is reduced.

The utility model belongs to the technical field of rust removal of steel pipes for building construction, and particularly relates to a rust removal device for building construction, which comprises a base. Two T-shaped sliding rails are fixedly connected to the base, the two T-shaped sliding rails are sleeved with a sliding seat in a matched mode, a dust collection box is fixedly connected to the top of the sliding seat, two bent plates are fixedly connected to the top of the dust collection box, a shell cover is fixedly connected to the top ends of the two bent plates in a matched mode, and a dust collection pipeline is connected between the bottom end of the shell cover and the top of the dust collection box. A screw hole is formed in the top end of the circumferential surface of the housing, and a threaded rod is rotationally assembled in the screw hole; in the polishing and derusting process, dust and particulate matter generated in the polishing and derusting process can be greatly reduced by arranging the dust removal mechanism, so that pollution to the surrounding environment is reduced, the dust concentration in air can be remarkably reduced, the air quality of a working place is improved, and the risk of suffering from respiratory diseases is reduced; and the body health of workers is protected.

The utility model belongs to the technical field of lithium carbonate production, and particularly relates to a battery-grade lithium carbonate production reaction device which comprises a reaction kettle, a stirring rod is rotationally connected in the reaction kettle, a liquid inlet is fixedly connected to one side of the top of the reaction kettle, and feeding pipes are fixedly connected to two sides of the outer part of the reaction kettle; the utility model provides a battery-grade lithium carbonate production reaction device, and solves the problems that in the prior art, when lithium carbonate is prepared, a precipitant is directly added into a slurry solution in a carbonization reaction kettle from a charging hole in the upper part of the carbonization reaction kettle and then is mixed with the slurry solution, so that the local concentration of the precipitant is easy to be too high; the problems that lithium carbonate crystallized in the prior art cannot be quickly dispersed and cannot be uniformly mixed with a slurry solution, so that the crystallized lithium carbonate has different particle sizes and is easy to agglomerate, the purity of the lithium carbonate is influenced, and waste gas generated in the reaction process can be discharged together when the lithium carbonate after the reaction is completed in the existing reaction kettle, and the nearby air environment is easy to damage are solved.