15720results about "Using liquid separation agent" patented technology

The invention relates to the technical field of unmanned aerial vehicle dynamic dust suppression intelligent decision making based on multi-sensor data fusion, in particular to a loess photovoltaic construction dust suppression unmanned aerial vehicle spraying dynamic regulation and control device and method, and the method comprises the steps: building a dynamically updated four-dimensional concentration field through a sensor cooperation unit in combination with a turbulence diffusion model of a dust field reconstruction engine; and the strategy knowledge base is optimized to shorten the flight path planning decision-making period from the minute level of the existing offline planning to the second level response. And the anti-interference execution unit realizes accurate spray trajectory tracking under a complex wind field condition. And a real-time evaluation closed loop of the dust suppression effect is constructed by a dual-spectrum imaging and deep learning analysis technology of the efficiency feedback unit, so that a dust field model can dynamically correct boundary condition parameters. The response lag time of an existing dust suppression system is shortened, meanwhile, the spray coverage rate is increased, energy consumption is reduced on the premise that the dust suppression effect is guaranteed, and an intelligent solution is provided for photovoltaic construction flying dust treatment.

A pair of waveform rotors and / or disks for use in a disk-pack turbine used, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. The rotors and / or disks having waveform patterns on at least one side.

A system and method in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through an intake chamber into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. In at least one embodiment, the waveform patterns include a plurality of hyperbolic waveforms axially aligned around a horizontal center of the system.

A pair of waveform disks for use in a disk-pack turbine used, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid into an expansion chamber and then through at least a portion of a waveform pattern present between at least two disks. The disks having waveform patterns on at least one side.

A disk-pack turbine for use, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through a fluid intake chamber into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. The rotors and / or disks having waveform patterns on at least one side.

The utility model discloses a dust falling device for municipal civil engineering, and relates to the related technical field of dust falling devices for municipal civil engineering, the dust falling device comprises a vehicle plate and a water tank fixedly installed on the vehicle plate, a cavity is formed in the vehicle plate, a rotating shaft is rotatably installed in the cavity, a swing assembly is arranged in the cavity, and the swing assembly is connected with the water tank. The top end of the rotating shaft extends out of the sweeping board and is fixedly provided with an installation disc, an installation frame is fixedly installed on the installation disc, a rack is rotatably installed on the installation frame, a fog gun machine is fixedly installed on the rack, an installation ring is fixedly installed at an air outlet of the fog gun machine, and a plurality of air cylinders are hinged to the installation ring. A spraying hose is communicated between each air duct and the fog gun machine, and an adjusting assembly for adjusting the angle of the air duct is arranged on the rack; the spraying angle of the fog gun machine can be adjusted, the spraying dust falling range of the fog gun machine is enlarged, and the dust falling effect of the fog gun machine is improved.

The invention provides a building solid waste recycled aggregate preparation system with multi-layer screening and intelligent judgment functions and an operation method. The construction method comprises the construction steps of waste transportation and throwing, manual sorting, waste crushing, cleaning and impurity removal, fine crushing, multi-stage screening, quality detection and control, finished product storage and transportation and recycled aggregate application. According to the building solid waste recycled aggregate preparation system with the multi-layer screening and intelligent judgment functions and the operation method, accurate regulation and control of the screening process are achieved, and the production efficiency is remarkably improved. The quality stability of the recycled aggregate is ensured, the influence of building wastes on the environment is reduced, and the cyclic utilization of resources is promoted. By adopting the technology, the production scheme can be quickly adjusted according to market requirements, the adaptability is high, and more economic benefits are created for enterprises.

The invention relates to the technical field of dust fall spraying, in particular to an integrated intelligent sensing dust fall spraying control method, system and equipment and a medium. The method comprises the following steps: firstly, acquiring spraying control parameters according to environment monitoring information, and formulating a subarea spraying strategy in combination with construction area distribution information; then evaluating the dust falling effect through real-time monitoring data, and automatically triggering an optimization instruction when the effect does not reach the standard; and finally, intelligent adjustment is performed based on field environment change and construction condition information. Not only is precise control of dust fall realized, but also the adaptability of the system is improved through continuous optimization, and the dust fall effect and resource control are balanced.

The invention relates to the technical field of spray towers, and discloses a spray tower for a tail gas treatment system, the spray tower comprises a tower body, a circulating water tank is fixedly arranged at the bottom of the tower body, a gas inlet end is fixedly arranged on the lower side wall of the tower body, a plurality of layers of pore plates are fixedly arranged in the tower body, and a filler layer is fixedly arranged above the pore plates. An air outlet end is fixedly arranged at the top end of the tower body, a filtering assembly is fixedly arranged in the circulating water tank and comprises an air inlet pipe, the top end of the air inlet pipe is fixedly connected with the top end of the tower body, and the bottom end of the air inlet pipe penetrates through the circulating water tank and is fixedly connected with a first cylinder; and a barrel II is slidably connected to the interior of the barrel I. Impurities in washing liquid are filtered through the filter screen, the cyclic utilization effect is achieved, the filter screen is backwashed through pushing force generated when filtered gas in the tower body flows, the impurities are carried and discharged through the blow-off pipe, and the automatic cleaning effect is achieved.

The invention relates to the technical field of waste gas treatment, and discloses a washing tower for waste gas treatment, which comprises an annular water tank, a tower body, a communicating pipe, a spiral cylinder, a water pump, a rotary dispersion device, two spiral mixing devices, a spraying purification device and the like, the upper end of the communicating pipe is communicated with the tower body, and the lower end of the communicating pipe is communicated with the annular water tank; the water pump is fixedly connected with the inner wall of the bottom of the annular water tank, the rotary dispersing device is connected with the tower body and the annular water tank, the two spiral mixing devices are connected with the two spiral cylinders respectively and connected with the rotary dispersing device, and the spraying purifying device is connected with the tower body and connected with the two spiral mixing devices respectively. By arranging the spiral cylinder, the spiral roller, the first rotating shaft, the air pump and other structures, the waste gas can be sucked into the spiral cylinder after being sprayed and purified, the waste gas and the washing liquid are mixed again through the spiral roller, the waste gas and the washing liquid react again, and the waste gas washing and purifying efficiency is improved.

The invention relates to the technical field of deodorization control, in particular to an air dust suppression, haze reduction and deodorization control system and method based on the Internet of Things. The method comprises the following steps: acquiring three-dimensional point cloud data and point cloud echo signals of a target area; analyzing the abnormal weakening trend of the echo intensity of the point cloud echo signal to calculate the dust concentration of the air in the target area; calibrating the dust concentration by using the three-dimensional point cloud data to obtain dust concentration three-dimensional gradient distribution data; acquiring a wind speed vector of the target area; constructing an air vortex field model based on the wind speed vector; performing dust migration path prediction on the dust concentration three-dimensional gradient distribution data by using an air vortex field model to generate dust migration path prediction data; and determining mobile positioning data of the fog gun based on the dust concentration three-dimensional gradient distribution data. According to the method, refined and dynamic air dust suppression, haze reduction and deodorization control is realized through point cloud modeling, air vortex field prediction and intelligent spraying optimization.

The utility model relates to the field of magnesia processing, and discloses a dedusting device for magnesia processing, which comprises a support seat, the top end of the support seat is fixedly connected with a dedusting frame, the right end of the dedusting frame is provided with a dust suction mechanism, and the inner wall of the dedusting frame is inserted with a filter frame. A wedge block is elastically connected to the inner wall of the bottom end of the dust removal frame through a reset spring, an elastic telescopic rod is fixedly connected to the side wall of the inner side of the dust removal frame, a shielding plate is slidably connected to the outer wall of the dust removal frame, an insertion block is slidably connected to the inner wall of the shielding plate, and a controller is arranged at the top end of the dust removal frame. According to the dust removal device, the new filter frame is inserted into the dust removal frame, the new filter frame extrudes and moves the wedge block, the wedge block is separated from the old filter frame, the old filter frame is pushed out by utilizing the elastic force of the elastic telescopic rod, the filter frame does not need to be replaced after shutdown, the dust removal device is simple and convenient in actual operation, and the dust removal effect is improved to a certain extent.

The utility model provides an energy-saving and environment-friendly road sweeper with a novel structure. Two garbage sweeping heads are erected at the front end of a front cross beam of a frame of the energy-saving and environment-friendly road sweeper; two garbage rolling brushes which are oppositely arranged at intervals in the left-right direction are erected in the middle below the frame; a garbage collection conveyor is erected on the rear portion below the vehicle frame, the garbage collection conveyor is provided with a rolling brush conveying structure and a spiral conveying structure which are connected front and back, and a conveying pipeline of the spiral conveying structure extends to the vehicle-mounted garbage can. During working, the garbage sweeping head sweeps garbage from the left and right sides in front of the truck to the center line in front of the truck, and then the garbage rolling brush sweeps the garbage from the left and right sides of the bottom of the truck to the center line of the bottom of the truck; and finally, the garbage collecting and conveying device upwards conveys the garbage swept on the center line of the vehicle bottom to a vehicle-mounted garbage can to be collected in a rolling brush conveying and spiral conveying combined mode. According to the road sweeper, a negative pressure suction mode is not needed to convey garbage, and the vehicle-mounted storage battery is completely adopted as power, so that the power consumption and emission of the whole sweeper can be effectively reduced.

A construction dust removal device includes a movable base, on which a dust suction mechanism and a spray mechanism are provided; the dust suction mechanism includes a dust removal head, a dust suction pipe group and a dust removal box which are connected in sequence, the angle of the dust removal head is adjustable, the dust removal box has an air inlet, the air inlet is connected to one end of the dust suction pipe group for air intake, a plurality of first dust removal nozzles located above the air inlet are provided in the dust removal box, and the nozzles of the first dust removal nozzles are arranged downward; the spray mechanism includes a water tank and a plurality of second dust removal nozzles, and the plurality of second dust removal nozzles are connected to the water tank through a pipe with a valve. The dust suction mechanism and the spray mechanism of the utility model can select a suitable dust removal method according to the size of the dust range of the construction phenomenon, and there is no need to equip a variety of dust removal equipment, which reduces the occupied space. For a construction environment with a large range of dust, it is necessary to start the spray mechanism for dust removal, and for a small range of dust environment, dust is removed by the dust suction mechanism.

The invention provides automatic dust suppressant spraying equipment for building interior construction, and belongs to the field of environmental protection treatment. Comprising a fixing plate, a connecting plate is arranged at the front end of the fixing plate, a round block is arranged at the front end of the connecting plate, a spray head is fixedly connected to the front end of the round block, a hose is fixedly connected to the outer surface of the round block, and a position reciprocating assembly used for reciprocating the position of the spray head is arranged on the fixing plate. The position reciprocating assembly enables the nozzle to perform left-right reciprocating motion for spraying, the angle reciprocating assembly is synchronously started to perform up-down reciprocating motion on the angle of the nozzle, so that the dust suppressant can cover a higher area and a lower area, and the position reciprocating assembly is matched to realize omnibearing coverage of a target area; the dust suppressant can be evenly sprayed to all corners, the wind power is monitored through the monitoring assembly, the device can conveniently carry out dust falling treatment on dust in the air in time, and therefore the dust suppression effect is improved.

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 watering cart for municipal greening engineering, and belongs to the technical field of municipal greening watering carts. The watering cart for municipal greening engineering comprises a cart body, a water storage tank and a watering mechanism, the water storage tank is mounted on the surface of the cart body, a mounting box is mounted on the surface of the cart body, and the watering mechanism is mounted on the surface of the cart body and comprises a first rotating shaft, a second watering pipe, a water pump and a three-way valve. By arranging the watering mechanism, water output by the water pump can be shunted through a three-way valve, one part of water is atomized, the other part of water is mixed with fertilizer and then sprayed on the surfaces of green plants, the spraying effect is improved, an atomizing nozzle can atomize water into tiny water drops, more uniform water distribution can be achieved through air propagation, and the water content is increased. According to the dust removal device, the water covering range is enlarged, water drop concentration or water waste is avoided, atomized water mist can be combined with dust particles through tiny water drops in air, dust in the air can be settled, and the dust removal function is achieved.

The invention discloses dust falling equipment for municipal road construction and a using method, and relates to the technical field of construction dust falling, the dust falling equipment comprises a chassis and universal wheels fixedly installed on the periphery of the bottom of the chassis, the top of the chassis is fixedly connected with a top plate, the dust falling equipment further comprises a water tank, a driving mechanism is fixedly connected to one side of the top of the top plate, and the driving mechanism is arranged on one side of the water tank; a spraying mechanism is arranged on the other side of the top of the top plate; the pressure pump is fixedly installed on one side of the top of the water tank, the end, away from the pressure pump, of the drainage pipe is connected with a telescopic pipe, and a spraying barrel is installed on the top of the top plate; the driving mechanism comprises an upper box body, and the bottom of the drainage pipe is connected with a connecting pipe; the spraying mechanism comprises a cam and a flange plate, the interior of the flange plate is connected with a rack in a sliding mode, and the problems that transverse swing adjustment and vertical swing adjustment of the device are adjusted through a servo motor and an electric hydraulic push rod respectively, operation is inconvenient, the adjustment efficiency is not high, and more energy is consumed are solved.

A disk-pack turbine for use, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through a vortex chamber into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. The rotors and / or disks having waveform patterns on at least one side. In at least one embodiment, the waveform patterns include a plurality of hyperbolic waveforms travelling around an axial center of the disk with each hyperbolic waveform having a varying diameter along the waveform.

The invention discloses a mobile intelligent control spraying and dust-settling system, and particularly relates to the technical field of compensation or utilization of an external environment of a spraying and dust-settling spraying vehicle under a wind field disturbance condition, which comprises a plurality of wind speed and wind direction sensing nodes mounted on a lifting rod in the advancing process of the spraying and dust-settling spraying vehicle, acquiring a plurality of local wind field parameters in different heights and directions, and constructing a wind speed gradient data set based on the local wind field parameters; and performing normalization and disturbance feature extraction processing on the wind speed gradient data set to generate a wind disturbance time sequence and a spatial disturbance distribution map. By constructing a time-space coupling control mechanism fusing wind disturbance feature extraction, trend prediction and path calibration, advanced sensing of non-steady-state wind field disturbance and dynamic correction of spray response parameters are achieved, and therefore the problems of sensing-control coupling lag and spray offset errors are solved.

The invention discloses a BIM-based bridge high pier construction safety monitoring method and system, and relates to the technical field of BIM, a dust concentration prediction vector P is calculated through an environment feature set T, high-precision prediction of dust diffusion concentration is realized, and the dust distribution condition of a construction site is more prospective. Then, according to the scheme, the dust fall parameter set D is formulated in combination with the dynamic change of the dust concentration, the dynamic dust fall strategy is executed, the spraying scheme can be adjusted according to the real-time environment, the dust fall efficiency is effectively improved, and the problems of water resource waste and uneven coverage existing in a traditional spraying mode are solved. Besides, through a feedback mechanism of a dust concentration error D, an environment safety index ZS is calculated and compared with a preset construction area trigger threshold ST, iterative optimization of a dust fall parameter set D is achieved, it is ensured that the construction environment is always in a controllable range, and potential safety hazards caused by excessive dust are avoided.

The present invention discloses a fully automatic high-pressure spraying device and its application in dust control in mines, and relates to the technical field of spraying equipment, including a main machine, a vertical pole, and a water mist spray gun arranged on the top of the vertical pole, wherein the water mist spray gun is connected to a water supply device located in the main machine, and the top of the vertical pole is connected to a reciprocating swing component, and the top of the reciprocating swing component is connected to a support frame, and the top of the support frame is connected to a rotating head, and the water mist spray gun is fixedly connected to the rotating head, and the outside of the rotating head is provided with a first jet frame and a second jet frame. The fully automatic high-pressure spraying device of the present invention and its application in dust control in mines, the ejected airflow can increase the speed of the water mist, thereby increasing the coverage of the water mist, and at the same time, the airflow can be ejected according to the direction of the incoming wind, and the ejected airflow forms a barrier to reduce the influence of the external wind force on the water mist, thereby improving the wind resistance of the water mist.

The utility model discloses a building construction dust fall spraying device which comprises a vehicle frame and a fan, the fan is arranged on the right upper side of the vehicle frame, a water tank is arranged in the vehicle frame, a plurality of nozzles are arranged on the inner wall of an air outlet in the right side of the fan at equal intervals, and the nozzles spray water to fall dust. An arc-shaped collecting groove is formed in the right lower side of the fan, the arc-shaped collecting groove is fixedly connected with the fan through a plurality of fixing rods, the arc-shaped collecting groove is used for collecting large water drops dripping from the nozzle, and the lower end of the arc-shaped collecting groove is fixedly connected with the upper side of the right end of the water tank through a telescopic hose; the telescopic hose is used for conveying water in the arc-shaped collecting groove into the water tank, water drops which cannot be blown away by the large-particle fan and drop downwards are collected through the arc-shaped collecting groove and conveyed into the water tank through the telescopic hose to be reused, and waste of water resources can be reduced by recycling water dropping from an air outlet of the fan. The water resource utilization rate is improved.

The invention discloses a dust treatment device for emery production, and relates to the technical field of emery production, the dust treatment device comprises a dust absorption mechanism and a dust absorption pipe mounted on one side of the dust absorption mechanism, a dust treatment mechanism is arranged on one side of the dust absorption mechanism, and a filter box is arranged on one side of the dust treatment mechanism; the dust absorbing mechanism comprises a dust absorbing sleeve, a first rotating shaft is arranged in the center of the interior of the dust absorbing sleeve, a dispersing rotating disc is fixedly installed on one side of the first rotating shaft and rotationally connected with the dust absorbing sleeve, and a plurality of dispersing spiral plates are fixedly installed on the outer side of the first rotating shaft; due to the fact that a certain amount of water is contained in the anti-static spray, the preliminary dust falling effect can be achieved, meanwhile, the anti-static effect can be achieved, and the phenomenon that due to the fact that the concentration of sucked dust is too high, dust suction pipes are mostly made of metal materials, certain electrostatic sparks are generated and make contact with aluminum oxide dust, and then explosion is generated is avoided.

The invention discloses a blasting water cannon dust removal device and a use method thereof, and belongs to the technical field of dust removal. A blasting water cannon dust removal device comprises a movable base and further comprises a water storage tank, the water storage tank is fixedly arranged at the top of the movable base, a water pump is arranged at the top of the water storage tank, the water outlet end of the water pump is connected with an adjusting pipe, and an atomizing nozzle is fixedly arranged at the end, away from the water pump, of the adjusting pipe; the high-pressure driving part is arranged at the rear end of the adjusting pipe and used for guiding high-pressure air pushing the water body into the adjusting pipe; the angle adjusting assembly is arranged on the water storage tank and is used for driving and adjusting the spraying angle of the atomizing nozzle at the end part of the pipe; and a length adjustment assembly; the position of the atomization nozzle can be adjusted according to different dust falling requirements, then the dust falling range is adjusted, the best spraying dust falling effect on the whole space in the spraying range is achieved, and the problems that in the prior art, dust falling equipment is poor in dust falling effect and low in efficiency are solved.

The invention discloses a building demolition dust intelligent suppression method and system, and relates to the field of building demolition dust suppression, and the method comprises the steps: obtaining the wind field data of a building demolition area and the spatial position information of a structure, and obtaining the arrangement parameters of each nozzle unit in a spraying system; constructing a wind barrier interference area model in the target area according to the spatial position information and the wind field data; calculating the spraying range of each nozzle unit according to the arrangement parameters; performing space superposition on the spraying range and the wind barrier interference area model, calculating a distribution prediction value of spraying particles generated by each nozzle unit in a three-dimensional space, and generating a space unit matrix of an operation area; traversing the space unit matrix to judge the particle distribution uniformity; maintaining or adjusting nozzle unit arrangement parameters according to a judgment result; dynamic reconfiguration of spraying resources in a multi-nozzle system is achieved, and the problem that the dust suppression efficiency is low due to coexistence of over-spraying and under-spraying is solved.

The utility model relates to the field of road construction, and discloses a dust falling device for asphalt road construction, which comprises a support frame, the lower end of the support frame is fixedly connected with a base, the front end of the outer arc surface of the support frame is fixedly connected with a light-transmitting plate, and the upper end of the support frame is provided with a rotary spraying device. A dustproof device is arranged at the lower end of the rotary spraying device, the rotary spraying device comprises a rotary bin, a sealing bearing is fixedly connected to the lower end of the inner surface of the rotary bin, and a water inlet pipe is fixedly connected to the end, away from the rotary bin, of the sealing bearing. Through the arrangement of the rotating bin, the sealing bearing, the water inlet pipe, the water pump, the water tank and the spray head, the rotating bin can be pushed to rotate through the counter-acting force of water mist sprayed out of the spray head after the water pump pressurizes water, and the spray head can synchronously rotate along with the rotating bin in the rotating process, so that the dust falling spraying range of the device is expanded; and the spraying process does not depend on external environment wind power.

The invention discloses a house building construction dust removal device which is applied to the technical field of house building construction and comprises a dust removal mechanism, the dust removal mechanism comprises a shell assembly, and when the house building construction dust removal device is used, the device is preferentially placed on a needed platform. And when spraying dust removal needs to be carried out in a near range, rotation of an adjusting ring is achieved by rotating a rotary knob, and the angle of a spray head can be adjusted. The angle of the spray head can be adjusted and changed, so that the range of the device is changed, the diameter of a sprayed cylinder is expanded, and the spray head is adjusted to be in a state of gathering towards the center when the fan blades need to be matched for remote spraying subsequently, so that the spray head can be matched with air blowing of the fan blades for spraying. Through the arrangement, different use angles of the spray head can be expanded to achieve different spraying effects, so that the use flexibility of the dust removal device is improved, and the use limitation is reduced.

The invention relates to the technical field of tunnel ventilation and environmental protection, in particular to an efficient and energy-saving tunnel ventilation and dust removal integrated system. Data analysis and decision making; ventilation control; dust removal operation; and sewage treatment. The intelligent sensing module is installed in the tunnel, environment parameters of different positions can be accurately obtained in real time and transmitted to the central control system, the efficient and energy-saving draught fan is selected, the frequency conversion and speed regulation device is installed, energy consumption is reduced, and by arranging the air filtering device and the dust falling device, the dust falling efficiency is improved. The dust collection device and the dust blocking device arranged at the tunnel portal effectively control the air environment quality in the tunnel, sewage purification and cyclic utilization are achieved through sewage treatment, and the system is high in intelligent degree, can be flexibly adjusted according to the actual situation and is suitable for popularization and application. The problems that a traditional ventilation and dust removal mode is high in energy consumption, poor in effect, lack of intelligent control and the like are effectively solved, the health of constructors is guaranteed, and pollution to the surrounding environment is reduced.

The utility model discloses a steel heat insulation fireproof door, which belongs to the technical field of fireproof doors, and comprises a frame, a door plate is hinged in the frame, a plurality of U-shaped fixing plates are fixedly connected to the surface of the top end of the frame, and the U-shaped fixing plates are linearly and symmetrically distributed. The top end of the U-shaped fixing plate is fixedly connected with an L-shaped fixing plate, the other end of the L-shaped fixing plate is fixedly connected with the frame, and a bidirectional heat insulation water curtain mechanism is arranged between the L-shaped fixing plate and the U-shaped fixing plate. By arranging the bidirectional heat insulation water curtain mechanism, the water curtain can absorb heat through evaporation, reduce the temperature of a fire area and reduce the temperature of the steel fireproof door directly contacted with flames, so that the door body is prevented from excessively fast thermal expansion and deformation in a fire, and the water curtain not only can reduce the temperature, but also can effectively isolate a fire source, so that the service life of the steel fireproof door is prolonged. Direct contact of flames to the surface of the fireproof door is reduced, and fire spreading speed is inhibited.