14645 results about "Waste gas" patented technology

The invention discloses a smelting waste gas recycling optimization system based on fuzzy control, and relates to the technical field of automatic control. The problems of low control precision and response lag caused by the fact that an existing static membership function cannot adapt to multi-scale working condition changes in real time are solved. Comprising a sensing acquisition module, a membership reconstruction module, a feature decoupling module, a coupling compensation module, a rule optimization module and an execution control module. Standardized data are acquired through sensing acquisition and filtering, an adaptive membership function is constructed by adopting incremental fuzzy clustering, and closed-loop self-correction of a multi-modal control instruction is realized by combining wavelet packet decoupling, feed-forward compensation and double-depth Q network reinforcement learning online optimization; the waste gas desulfurization efficiency, energy consumption optimization and treatment system stability of waste gas treatment can be effectively improved.

The invention discloses a treatment system and a treatment method for chemical production waste gas, and relates to the technical field of industrial waste gas treatment. The system comprises a waste gas collection unit, a pretreatment unit, a multi-stage purification unit and an intelligent control unit. The intelligent control unit monitors data through a sensor network, the data processing and analysis module evaluates the processing effect and predicts the trend, the intelligent decision and adjustment module optimizes the parameters of each unit in sequence, and the remote monitoring and alarm module monitors and alarms in real time. The system can efficiently treat waste gas, realizes automatic intelligent control, ensures the stable treatment effect, reduces the risk of environmental pollution, and is widely applied to the field of chemical production waste gas treatment.

The invention relates to the technical field of waste gas treatment, and discloses a digital twinning-based waste gas treatment intelligent early warning system, which comprises a model construction module, a monitoring module, a factor extraction module and the like. The model construction module constructs a dynamic risk model and a three-dimensional concentration field model based on waste gas components and equipment operation state data, and simulates and optimizes parameters in combination; the monitoring module generates a prediction table containing risk indexes and regulation and control parameters; the factor extraction module identifies risk association variables; the evaluation module calculates a risk accumulation index; the adjusting module updates the prediction table in sequence; and the early warning execution module triggers an alarm. The system is also provided with an instruction processing unit for realizing conflict detection and priority management. The system improves the accuracy of risk early warning and the intelligent level of regulation and control, is suitable for industrial waste gas treatment scenes, and guarantees the treatment efficiency and safety.

The utility model relates to the technical field of waste gas treatment, in particular to a waste gas spray tower device for waste gas treatment, which comprises a tower body and a liquid tank, the circumferential surface of the rear end of the tower body is fixedly connected with a gas inlet pipe, the circumferential surface of the right end of the tower body is provided with a plurality of material holes, and the liquid inlet end of a water pump is fixedly connected with a liquid inlet pipe. The upper ends of the plurality of latticed carrying plates are connected with push plates through driving mechanisms, the bottom ends of the plurality of flow dividing shells are fixedly connected with a plurality of atomizing nozzles, the plurality of connecting pipes extend rightwards into the tower body and are fixedly connected with the plurality of flow dividing shells, and the plurality of flow dividing shells are located at the right upper ends of the corresponding push plates. According to the utility model, the driving mechanism is controlled to operate to simultaneously drive the plurality of push plates to rotate, at the moment, the filler positioned on the latticed loading plate is pushed by the push plates, and under the action of the push plates, the filler positioned deep in the tower body can be driven to gradually get close to the maintenance channel; and therefore, a worker can take out and replace the filler in the tower body more conveniently.

The invention relates to the technical field of industrial equipment temperature control, and discloses a temperature control system, which comprises a multi-source state sensing module for acquiring a power load, temperature, humidity and feedback temperature; the feed-forward prediction and analysis module is used for generating a feed-forward signal based on the load and the temperature; the closed-loop feedback and safety guarantee module is used for calculating a feedback signal according to the temperature deviation; the cooperative control decision module combines the feed-forward signal and the feedback signal to generate a fan instruction, and generates a baffle instruction for balancing heat dissipation and regeneration according to the feed-forward signal and humidity; the self-adaptive heat dissipation execution module is used for executing a fan instruction to generate cooling airflow; and the dynamic energy regeneration module executes a baffle instruction to distribute the waste gas flow direction. According to the method, the power load is introduced to serve as a prospective index, correction is conducted in combination with the environment temperature, a predictive heat dissipation control model is constructed, the system can start heat dissipation adjustment before a large amount of heat is generated, and therefore smooth and stable control over the equipment temperature is achieved.

The invention provides a system and a method for realizing pneumatic powder conveying by utilizing gas circulation, a gas supplementing inlet is communicated with a recovery dust remover and a recovery buffer tank, the recovery dust remover is communicated with the recovery buffer tank, and the recovery buffer tank is communicated with gas inlets of a plurality of compressors; a gas outlet of the compressor is communicated with a plurality of finished product bins connected in parallel through a gas buffer tank, the finished product bins are communicated with a target bin, and the target bin is communicated with a recovery dust remover through an emptying filter to form circulation. Under the condition that powder exists in a finished product bin or a target bin is not full, stable operation can be continuously carried out, nitrogen is recycled in the conveying process, the nitrogen utilization rate is increased, the emptying amount is reduced, and the waste gas treatment amount is reduced.

The invention provides an ecological environment evaluation method and device for a coal mine area and a mining area environment evaluation system. The method comprises the steps that a plurality of environmental indexes of a coal mine area are obtained, and the environmental indexes comprise one or more of soil quality, water quality index, vegetation coverage rate, air quality index, noise level, waste water discharge amount, waste gas discharge amount, biodiversity index, heavy metal content and greening coverage area; the relevancy between the environment indexes is obtained, and the relevancy is the changed relevancy degree between any two environment indexes; a first weight coefficient is determined according to the relevancy, and the first weight coefficient and the relevancy are in positive correlation; and performing weighted average at least according to the plurality of environment indexes and the first weight coefficients corresponding to the environment indexes to obtain an evaluation score. According to the scheme, the problem of low accuracy of the evaluation result of the coal mine environment in the prior art is solved.

The present invention discloses a filler washing tower and a washing method, the filler washing tower is used for washing treatment of VOCs waste gas, and the filler washing tower comprises: a washing liquid pipe which is arranged at the axis position of the washing tower in a penetrating manner, vertically extends and is used for receiving a washing liquid from the outside of the tower; the washing liquid pipe is provided with a rotatable pipe section at the corresponding position of the filler layer; the spraying pipe assembly is composed of a plurality of spraying pipes with different lengths and is communicated with the rotatable pipe section, and a spraying opening of each spraying pipe is formed in the tail end of the pipe; the spraying pipes are arranged at intervals in the circumferential direction of the rotatable pipe section and are tangent to the rotatable pipe section; the spraying pipes with different lengths drive the rotatable pipe section to rotate through counter-acting force when spraying out the washing liquid, and annular partition covering of the washing liquid on the packing layer is formed. Rotation of the spraying pipe is achieved through spraying of washing liquid, and through annular partition covering of spraying, water saving can be achieved while the gas-liquid mass transfer efficiency is guaranteed, and external power consumption is not needed.

The invention belongs to the technical field of waste gas desulfurization, and particularly relates to an efficient mass transfer desulfurization tower which comprises a desulfurization tower body, a gas inlet pipe and a gas exhaust pipe, the gas inlet pipe is communicated with the bottom of one side of the desulfurization tower body, the gas exhaust pipe is communicated with the top of the other side of the desulfurization tower body, and a slurry pond is arranged at the bottom of the desulfurization tower body. A gas flow transmission power mechanism, a dynamic mass transfer synergistic mechanism, an atomization spraying mechanism and a demister are respectively arranged in the desulfurization tower from bottom to top, and a compression gas injection forced oxidation mechanism is arranged on the desulfurization tower; the waste gas kinetic energy is converted into mechanical energy, compressed injection of air is achieved through linkage gear transmission, calcium sulfite is forcibly oxidized into calcium sulfate, resource utilization of desulfurization products is achieved, and in the limited space of the desulfurization tower, sulfur-containing waste gas rises in a rotational flow mode and collides with atomized slurry at a high speed, the slurry is cut up, and gas waves continuously collide with one another to conduct rotary cutting. Liquid particles are crushed to be finer and thinner, and gas and liquid are fully mixed, so that the desulfurization efficiency is improved.

The invention relates to a foam defoaming method and system suitable for a slurry pool in waste gas desulfurization, and belongs to the technical field of waste gas desulfurization. The foam defoaming method comprises the following steps: collecting image information of the slurry pool; according to the image information, whether foam exists in the pulp chest or not is judged; if yes, the current slurry pressure and the current slurry concentration in the slurry pool are obtained; inputting the current slurry pressure and the current slurry concentration into a pre-constructed defoaming agent first feeding amount prediction model to obtain a first prediction amount of defoaming agent feeding; and putting a defoaming agent into the pulp chest according to the first predicted quantity. The method has the beneficial effects that the human efficiency is improved, and the dependence on the experience of personnel is reduced.

The invention relates to the technical field of gas waste heat utilization, and discloses a gas waste heat utilization method and system based on artificial intelligence. The method comprises the steps that sensor parameters of the gas extraction system are collected in real time and processed, and a standardized data set is obtained; the standardized data set is input into a fusion convolution Transform neural network for analysis modeling, and a gas waste heat prediction model is obtained; performing decision analysis on gas waste heat utilization based on the gas waste heat prediction model and a preset expert knowledge base to obtain a control strategy; and performing parameter regulation and control on a heat exchanger, a waste heat boiler, a circulating pump and control valve equipment according to the control strategy to obtain a gradient utilization execution scheme. The gas waste heat recovery strategy is dynamically adjusted, and the safety of the system is guaranteed while it is ensured that gas waste heat is efficiently recovered.

The invention belongs to the field of coal waste gas treatment, and particularly relates to a coal waste gas comprehensive utilization dynamic optimization method and system based on big data, and the dynamic optimization method comprises the following specific steps: S1, collecting and preprocessing multi-source data; s2, big data analysis and model construction: constructing a waste gas generation prediction model, a resource recovery potential evaluation model and a waste gas treatment effect evaluation model; and S3, dynamic optimization decision making and implementation: monitoring key indexes in real time and performing early warning, and through accurate waste gas generation prediction and real-time equipment performance monitoring, waste gas treatment process parameters can be adjusted in time, it is ensured that waste gas treatment equipment is always in an optimal operation state, the waste gas treatment efficiency is effectively improved, the pollutant emission concentration is reduced, and the energy consumption is reduced. The waste gas treatment quality is improved, so that the emission index more stably meets the environmental protection standard.

The invention provides a multi-tower linkage control method and system in waste gas treatment and a medium, and relates to the technical field of automatic control, and the method comprises the following steps: building a multi-tower linkage control architecture; collecting target waste gas composition data, performing working condition matching analysis on the composition data and a waste gas cooperative treatment tower group, determining process parameters of a matched treatment tower and a target treatment tower group for linkage treatment, and monitoring waste gas change parameters of the treatment towers; and when the waste gas change parameter reaches a waste gas switching threshold value, performing dynamic switching regulation and control by adopting a multi-tower linkage switching strategy, and determining a multi-tower linkage control strategy parameter to perform closed-loop treatment control on the target waste gas. The technical problems that in the prior art, a real-time sensing and dynamic response mechanism based on waste gas composition changes is lacked, so that the utilization rate of a treatment tower set is low, and complex and changeable waste gas treatment requirements cannot be efficiently and stably met are solved, and the technical effect of improving the waste gas treatment efficiency and stability is achieved.

The invention relates to a cooling tower device for recovering heat from waste steam, which adopts three layers of transversely arranged heat exchange tube groups, realizes cascade recovery of heat energy of waste steam through communication of an air inlet and an air outlet, and is additionally provided with fins on the surfaces of heat exchange tubes to enhance the gas-liquid mass transfer efficiency. The core innovation lies in that a built-in mechanical cleaning mechanism is arranged, a driving assembly is in linkage with multiple sets of bidirectional adapters through a rotating shaft, brush rods distributed in the circumferential direction are driven to conduct high-frequency physical scraping on heat exchange pipes and fins, scale deposition is effectively restrained, and compared with traditional chemical cleaning, the shutdown maintenance time is shortened; the steam latent heat recovery rate can be increased, meanwhile, secondary pollution is avoided through a full-mechanical cleaning scheme, modular layout is adopted in structural design, interlayer fluid distribution of the heat exchange pipe set is achieved through a U-shaped pipe and a straight pipe, it is ensured that the resistance coefficient of the system is lower than that of similar equipment, and the device has remarkable energy-saving benefits in industrial scenes such as chemical engineering and metallurgy.

An anesthetic equipment storage and waste air management module configured to housing electronic and electromechanical surgical equipment including a system to measure and record administration of one or more IV medications or fluids for IV administration. The module can include a housing having a lower section and a tower-like upper section, wherein the lower section is configured to house unrelated waste heat-producing electronic and electromechanical surgical equipment. The module can also include a cowling that substantially confines waste heat generated by the unrelated waste heat-producing electronic and electromechanical surgical equipment, and can include a system for measuring and recording the administration of the one or more IV medications and fluids.

The utility model discloses a kitchen garbage disposer, relates to garbage disposal technical field, including crushing device and waste gas treatment device, the waste gas treatment device includes purification box and filter, the purification box is used for cooling and / or purifying the waste gas, the filter is used for filtering the waste gas. According to the waste gas treatment device provided by the utility model, the purification box and the filter are combined with each other, so that waste gas generated by kitchen garbage can be cooled, purified and filtered, the treatment modes are abundant, the treatment effect is good, and the defects in the prior art can be effectively overcome.

The invention discloses waste gas treatment equipment based on environment-friendly construction, and relates to the technical field of waste gas treatment, the waste gas treatment equipment comprises a spray tower, and further comprises a spray mechanism; the filling mechanism comprises a shell, two pore plates slidably connected to the interior of the shell and a plurality of fillers arranged at the tops of the pore plates, and a plurality of through grooves are formed in the top of the shell; the adjusting mechanism is used for driving the shell to rotate within a set angle; by continuously changing the contact angle of the filler and the gas-liquid and realizing the dynamic contact of the filler and the gas-liquid, the problem that the static filler easily forms a scaling area due to non-uniform liquid distribution is solved, the problem of liquid coverage difference caused by non-uniform spray head distribution or local blockage is solved, the space for placing the filler is increased, and the stability of the filler is improved. Then the filler is driven to turn over back and forth at the top of the pore plate, the filler rubs and collides with each other, the cleaning agent is sprayed to the filler, dirt on the filler is cleaned, and the problem that in the prior art, a filler layer needs to be removed from the interior of the spray tower to be cleaned is solved.

The invention discloses a waste gas washing spray tower with an anti-corrosion structure, and relates to the technical field of waste gas treatment.The waste gas washing spray tower comprises a tower body, a liquid storage tank formed in the tower body, a gas inlet pipe installed on the side wall of one side of the tower body and a gas outlet pipe installed at the top of the tower body; spraying assemblies are mounted in the tower body above the two filler purification assemblies, a demister is mounted on the inner wall of the tower body below the gas outlet pipe, and an anti-corrosion lining is laid on the inner wall of the tower body. By arranging the filler purification assembly, the effect that blocked filler can be automatically discharged from the rectangular grid during cleaning is achieved, manual scraping is not needed, the labor burden of workers is reduced, and the speed of taking the filler out of the spray tower is increased; and by arranging the traction mechanism, the effect that the traction rope pulls and drives the two filler purification assemblies to synchronously turn over is achieved, and simultaneous discharging of filler in the two filler purification assemblies is facilitated.

The invention provides a single-glass crystalline silicon photovoltaic module recovery method, and aims to solve the problems that fluorine film residues easily exist on a packaging adhesive film and fluorine-containing waste gas is discharged during subsequent pyrolysis of the packaging adhesive film after a back plate is removed by an existing physical disassembly, pyrolysis, separation and recovery process, and in addition, most welding strip coatings on the market contain lead, so that when the adhesive film is removed by pyrolysis, the lead-containing waste gas cannot be discharged during the subsequent pyrolysis of the packaging adhesive film. The lead element diffuses to pollute the battery piece, and the subsequent recovery difficulty is increased. Before the packaging adhesive film and the battery piece are shoveled off by a heat knife, a packaging adhesive film thinning process and a welding strip removing process are added. The residual backboard and the residual fluorine film can be removed together through the adhesive film thinning process, and the problem of fluorine-containing tail gas emission is solved; in addition, the lead-containing solder strip is removed before pyrolysis, and the solder strip is not subjected to a high-temperature process, so that pollution of lead elements to a battery piece is reduced; by optimizing the disassembling process, the breakage rate of the removed back glass is reduced, and the production yield of a production line is increased. The method is not only suitable for recycling of complete single-glass assemblies, but also suitable for recycling of broken single-glass assemblies, and the process applicability is high.

The invention discloses a waste gas treatment device for a chemical plant, and belongs to the technical field of waste gas treatment. In order to solve the problem that filler balls in a filler layer are difficult to orderly adjust in the prior art, the technical scheme is provided as follows: the device comprises a spray tower and a circulating water tank arranged at the bottom end of the spray tower, and a circulating water pump used for circulating flow of treatment liquid is mounted at the top of the circulating water tank. The waste gas treatment unit is arranged in the spray tower, and an inner sleeve in the filler layer mechanism drives a paving plate to move under the action of the driving mechanism, so that filler balls arranged in the filler layer mechanism are disturbed, the filler balls are efficiently and comprehensively rearranged in the filler layer mechanism; the adjusting piece is driven to move in the moving process of the inner sleeve, so that the hollow cover is extruded, reciprocating motion of the knocking piece is achieved under the action of the reset spring, rearrangement of the filler ball in the filler layer mechanism is assisted under the action of the knocking piece, and cleaning of impurities is accelerated.

The invention provides a method for selecting a high-concentration VOCs adsorbent at different temperatures and application, and belongs to the technical field of waste gas governing. According to the method, through testing pore structure parameters of a model adsorption material with concentrated pore size distribution, a static adsorption isotherm and a dynamic penetration curve for VOCs at different temperatures, a high-concentration VOCs adsorbent is obtained; a linear relation equation of the critical aperture and the critical pressure is established through linear fitting, then a correlation equation of the critical aperture, the temperature and the partial pressure is established, and the appropriate aperture distribution range and the model selection standard of the high-concentration VOCs adsorbent at different temperatures are determined by combining dynamic adsorption results. According to the method, the ternary matching relation equation of the VOCs partial pressure, the temperature and the critical aperture is constructed, accurate type selection of the high-concentration VOCs adsorbent at different temperatures is achieved, the pore volume utilization rate and the adsorption capacity can be improved, meanwhile, desorption energy consumption and the VOCs pyrolysis risk are reduced, and a theoretical basis is provided for adsorbent type selection and technical optimization.

The invention discloses a building material mine carbon emission metering traceability method, which realizes full-chain accurate metering and credible traceability of carbon emission through multi-process division, multi-source sensing data acquisition, dynamic model correction and block chain traceability technologies. The method comprises the following steps: refining a building material mine production process into five main procedures of mining, raw material processing, calcining / sintering, finished product preparation and transportation, and deploying a multi-source sensor group to collect raw material quality, particle size distribution, energy consumption and waste gas emission data in real time; constructing a multi-layer carbon emission calculation model, and dynamically correcting emission factors in combination with a material balance method, life cycle evaluation (LCA) and a machine learning algorithm; determining a carbon emission distribution coefficient based on the product output proportion and the process contribution degree, and generating a block chain carbon footprint label; coupling a mine restoration carbon sink evaluation and deduction mechanism, and outputting a dynamic net carbon accounting report; and an abnormal emission early warning mechanism is integrated. According to the method, the accuracy of carbon emission metering is remarkably improved, and technical support is provided for building material mine carbon neutralization.

The invention relates to the technical field of chemical gas collection and treatment, and discloses a chemical gas collection and treatment device for chemical industry, which comprises a reaction kettle, the circumferential surface of the reaction kettle is fixedly connected with a bracket, the circumferential surface of a rotating shaft is fixedly connected with a medicine box, and the inner wall of the medicine box is fixedly communicated with a connecting pipe. A spraying head is installed at the end, away from the medicine box, of the connecting pipe, a baffle is slidably connected to the inner wall of the medicine box through a spring, a connecting plate is fixedly connected to the top of the baffle, and a protruding plate is fixedly connected to the inner wall of the reaction kettle. According to the gas purification device, the liquid medicine is uniformly sprayed to each corner of equipment, the adsorption effect is improved, the residual quantity of pollutants in gas is reduced, and the baffle drives the spraying head to indirectly spray while the liquid medicine is sprayed, so that insufficient reaction caused by too fast spraying is prevented, and the gas purification efficiency is improved.

The invention discloses a waste lithium battery electrolyte waste gas treatment device and method, and relates to the field of waste lithium battery electrolyte waste gas treatment. The waste lithium battery electrolyte waste gas treatment device comprises a box frame, a filter box is fixedly connected to the box frame, a dust falling hopper is arranged on the filter box, a gas inlet pipe is fixedly connected to the dust falling hopper, a gas purification box is fixedly connected to the filter box, a gas outlet pipe is fixedly connected to the gas purification box, and dust removal cloth bags which are evenly distributed are fixedly connected to the bottom wall of the gas purification box. The upper end of the dust collecting bag is fixed and suspended in the inner cavity of the filter box. The problem that dust at the bottom of the bag is difficult to clean is solved through the dust cleaning mechanism, and the efficiency and service life of the dust collecting bag are improved; during dust removal, the plugging frame opens the bag bottom, accumulated dust is removed in cooperation with high-pressure injection, and sticky dust is prevented from forming a'dead zone '; the cloth bag is loosened to enhance the vibration effect and improve the dust stripping rate; the process is automatic, resistance is reduced, the operation period is prolonged, and complex waste gas purification is facilitated.

The utility model discloses an activated carbon adsorber capable of improving adsorption efficiency and adsorption capacity, and relates to the technical field of activated carbon adsorption equipment, the activated carbon adsorber comprises a filter box body, a filter assembly is arranged in the filter box body, and the filter assembly comprises two activated carbon filter plates which are arranged in the filter box body in a sliding manner; the two activated carbon filter plates are parallel to each other and are arranged in a staggered manner; according to the utility model, through the arrangement of the movable activated carbon filter plates, when one filter plate is gradually saturated, the filter plate can be moved into the purification box for purification or regeneration treatment, and the other unused filter plate is moved into the filter box body for continuously filtering waste gas, so that the overall adsorption capacity is effectively improved through the design; the adsorber can continuously and efficiently treat waste gas; in the adjusting process, the activated carbon filter plate does not need to be replaced by shutdown, so that production interruption and efficiency reduction caused by replacement of the filter plate by shutdown are avoided.

The utility model discloses neutralization equipment for chlorinated paraffin production, and relates to the technical field of chlorinated paraffin production. The device comprises a bottom plate, one side of the top of the bottom plate is fixedly connected with a neutralizing box, and the other side of the top of the bottom plate is fixedly connected with a recycling box; a recycling assembly is arranged in the recycling box and comprises storage boxes, the storage boxes are fixed to the two sides of the recycling box, and a transmission motor is fixedly connected to the top of one side of the recycling box. According to the waste gas recycling device, a first reciprocating lead screw can be driven to rotate through work of a transmission motor, then a first threaded sleeve is driven to move, and therefore a collecting plate is driven to move, so that the purpose of recycling substances in waste gas is achieved, and through rotation of the first reciprocating lead screw, a second bevel gear can be driven to rotate through a first bevel gear; and then the second reciprocating lead screw is driven to rotate, so that the stirring device completes reciprocating motion, and the purpose of uniformly mixing reaction substances is achieved.

The invention discloses a waste gas adsorption resin waste recovery device which comprises a support, a recovery cylinder is installed on the support, a flow guide plate is fixed in a screen cylinder, when the screen cylinder drives the flow guide plate to rotate, resin in the screen cylinder can be conveyed to the position between two rotating cylinders, the two rotating cylinders rotate relatively to drive a crushing tool bit to rotate, and the crushing tool bit is driven to rotate. The rotating crushing tool bits can circularly crush the resin, the two crushing tool bits can be driven to extend towards the outside of the rotating cylinders, and the gap between the crushing tool bits on the two rotating cylinders is reduced, so that the particle size of crushed particles of the resin is reduced. Only one power source is needed, energy consumption and maintenance cost are reduced, resin waste can be efficiently crushed, multi-stage crushing is not needed, the crushing tool bits in use can be cooled, the service life is prolonged, the screening drum is effectively prevented from being blocked, the screening efficiency of crushed resin is guaranteed, the distance between the crushing tool bits can be adjusted, and the particle size of resin particles is controlled; the stable quality of the recovered resin is ensured.

The invention discloses a laser welding device for heat exchange plate machining, and provides the following scheme that the laser welding device comprises a laser welding head, a fixing frame is connected to the laser welding head, a rotating brush wheel is connected to the fixing frame, an inductance heating block is connected to one side of the fixing frame, and a fixing cylinder is installed on the side, located on the laser welding head, of the fixing frame; a plurality of layers of rebound rings are mounted on the inner wall of the fixing cylinder, and an air suction pipe is mounted on the fixing frame; when the heat exchange plate of the electric automobile is subjected to laser welding through the laser welding head, the heat exchange plate of the electric automobile is heated through the inductance heating block, so that burrs on the surface of the heat exchange plate are softened, the air density is reduced, the heat exchange plate of the electric automobile is preheated, and the surface of the heat exchange plate is cleaned through the brush wheel; and the exhaust gas is collected through the gas suction pipe, particles are screened through the brush wheel, the smoke particles can be beaten and intercepted through rotation of the brush wheel, the particles are thrown out, and the multifunctionality of the brush wheel is achieved.

The invention discloses a spray tower for producing diphenyl azide phosphate, and relates to the technical field of spray towers, the spray tower comprises a tower body, the bottom of the side end of the tower body is provided with a gas inlet pipe, the top of the tower body is provided with a gas outlet pipe, the inner wall of the tower body is fixedly provided with a circular plate and a connecting ring, the connecting ring is located above the circular plate, and the circular plate is fixedly connected with the gas outlet pipe. A circular frame is arranged between the circular plate and the connecting ring, through holes are formed in the circumference of the surface of the circular plate at equal intervals, the circular frame comprises a plurality of circular rings and fixing pieces, the circular rings are distributed in a concentric circle mode, and the circular rings are fixedly connected through the fixing pieces. According to the invention, by cooperatively adjusting the opening degree of the gas outlet pipe, the gaps of the through holes of the circular plate and the gaps of the diffusion ports of the fan-shaped assembly, the gas-liquid flowing and reaction conditions in the spray tower can be accurately controlled, so that the waste gas and the spray liquid are fully contacted and reacted, and the waste gas treatment efficiency and quality in the production process of diphenyl azido phosphate are improved.

The invention relates to the technical field of shell punch forming, in particular to a scratch-free metal stamping die for an automobile battery shell, which comprises a stamping die, and the stamping die comprises a lower die bottom plate, a lower die, an upper die fixing plate, an upper die and a guide column, a blowing mechanism used for blowing the surface of the lower die is arranged between the lower die and the upper die, the whole blowing mechanism is arranged on the guide columns in a sliding mode, and two lifting assemblies used for changing the set height of the blowing mechanism are arranged on the lower die bottom plate. The purging mechanism is composed of a purging assembly and a recycling assembly used for recycling waste gas obtained after purging. The invention provides a method.