2410 results about "Water curtain" patented technology

The present invention relates to the technical field of waste plastic processing. Disclosed is a waste plastic recycling and regeneration device having crushing and cleaning functions. The present invention aims to solve the technical problems of part of powdered impurities in semi-finished plastic particles being easily affected by rolling, vibration and impact of plastic to scatter and flow away, seriously affecting subsequent feeding and processing and polluting the surrounding working environment. The present invention comprises an outer cylinder, an ultrasonic transducer is sleeved at the middle of the outer wall of the outer cylinder, and a top cover is sleeved at the top of the outer cylinder. According to the present invention, a continuously falling water curtain can be formed at the top of the inner cylinder, to continuously intercept and purify part of powdered and scattered impurities; leakage and discharge of first leakage holes and second leakage holes can be further regulated and controlled, and sealing partition, mesh layer screening and centralized discharge are implemented; part of powdered and scattered impurities is continuously intercepted and purified; and an aeration pipe aerates cleaning water in an inner cylinder to promote the stirring and tumbling of semi-finished plastic particles in the cleaning water.

The invention discloses a diversion cooling device and a rocket engine ignition test system, and belongs to the technical field of rocket launching tests. The flow guide cooling device comprises a spraying piece, a flow guide mechanism and a water supply mechanism. The spraying piece is arranged at the initial section of the tail flame of the rocket engine, a water curtain barrier can be arranged through spraying from top to bottom, cooling and noise reduction are achieved, fuel gas of the tail flame is prevented from burning other devices, and the temperature of the cooled tail flame cannot be too high when the cooled tail flame makes contact with the flow guide mechanism, and the flow guide mechanism cannot be damaged; in the flow guide mechanism, a flow guide groove water spraying panel which is in an arc shape and protrudes downwards in an inclined mode and flow guide groove bodies located on the two sides of the flow guide groove water spraying panel are used for conducting comprehensive spraying and flow guide on the high-impact-force and high-temperature tail flame, cooling and noise reduction are achieved, and water spraying areas with different spraying densities can conduct targeted spraying according to the temperature of the inner flame and the outer flame of the tail flame. And the arc plate and the second nozzle are detachable, so that the arc plate and the second nozzle are convenient to replace, assemble and disassemble after a certain part is damaged by high temperature, the cost is reduced, and the use economy is improved.

The invention discloses efficient purification equipment for industrial sewage treatment, and relates to the technical field of sewage treatment.The efficient purification equipment comprises a box body, a fixed shell and a water pump are fixedly connected to the box body, and the water outlet end of the water pump and the bottom of the fixed shell are jointly and fixedly connected with a water outlet pipe. Through the arrangement of the intermittent material mixing unit, a water pump sucks sewage in the box body through a water inlet pipe, then the sewage is discharged through a strip-shaped water outlet head through a water outlet pipe and a water outlet pipe, the sewage passing through a fixed shell can drive an impeller to rotate, the impeller rotates to drive a rotating pipe and an extrusion block to rotate, and under the action of a reset spring, the sewage is discharged. The U-shaped piston rod reciprocates, then the spray head sprays materials to the water curtain intermittently, the sprayed flocculating agent and sewage in the water curtain are flushed to the inclined surface of the annular disc, and under the action of the Y-shaped groove, the flocculating agent and the sewage flow to the bottom of the annular disc and can be mixed again, so that the mixing effect of the agent and the sewage is improved; the sewage purification effect is improved.

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.

The invention relates to a gas-water curtain partition type tunnel smoke control system and method, and belongs to the field of tunnel fire prevention and control, the gas-water curtain partition type tunnel smoke control system comprises a tunnel, smoke control partitions, a tunnel fire extinguishing system, a gas curtain generation system, a water curtain generation system and a fire detection alarm, the gas curtain generation system comprises a gas curtain generation tail end, and the water curtain generation system comprises a water curtain generation tail end. The tunnel is divided into a plurality of smoke control subareas by the air curtain generation tail end and / or the water curtain generation tail end. A plurality of air curtains and water curtains can be formed at the boundaries of the two sides of the smoke control subareas, at the moment, smoke generated by a fire source can be isolated into the smoke control subareas, the smoke can be continuously eliminated under the internal circulation purification effect of the tunnel fire extinguishing system, meanwhile, the tunnel fire extinguishing system can automatically restrain fire spreading, and therefore the smoke spreading path is thoroughly blocked.

The invention relates to the technical field of fluid pressure regulation, and provides an automatic water pressure tracking and regulating method and device for a water curtain test and a storage medium, and the method comprises the steps: obtaining a target water pressure value of a water curtain hole for the current water curtain test, obtaining an actually-measured water pressure value in the water curtain hole in the kth second, and determining the pressure difference between the actually-measured water pressure value and the target water pressure value; the valve opening degree of the electric water valve is controlled in real time according to the pressure adjusting scheme, the pressure of the water curtain hole is rapidly adjusted to the target water pressure value without vibration, and after the water pressure is adjusted to the target water pressure value, the water pressure can be stabilized at the target water pressure value in real time. According to the method, water pressure adjustment is free of oscillation, the phenomenon of fluctuation is avoided, the adjustment speed is higher than that of other methods, water pressure adjustment disturbance resistance can be achieved, and the method has great significance in promoting industry technology development.

The invention discloses sewage treatment equipment based on an automatic dosing structure, and relates to the technical field of sewage treatment.The sewage treatment equipment comprises the automatic dosing mechanism arranged above a sewage treatment pond, the automatic dosing mechanism comprises a U-shaped plate, and the U-shaped plate is connected with the top of the sewage treatment pond through a first moving module; two first T-shaped guide rods are inserted into the top of the U-shaped plate, and the lower ends of the first T-shaped guide rods are fixedly connected with a dosing box. According to the sewage treatment equipment based on the automatic dosing structure, the dosing height is convenient to control, so that the lower end of the dosing pipe is close to the water surface and is more uniformly dispersed, water curtains can be formed on the two sides of the dosing pipe, the powder medicament is prevented from escaping, and the sewage treatment equipment is more healthy and environment-friendly while the automatic dosing effect is ensured; according to the automatic medicine adding device, powder medicine can be crushed in a reciprocating mode, solidification of the powder medicine is avoided, hard impurities can be conveniently detected, discharged and collected, blockage of an automatic medicine adding mechanism is avoided, and the automatic medicine adding effect is guaranteed.

The utility model belongs to the technical field of paint spraying tail gas treatment, and provides a water curtain cyclone paint spraying cabinet which comprises a cabinet body, a water curtain mechanism, a cyclone mechanism and a water circulation mechanism, the water curtain mechanism, the cyclone mechanism and the water circulation mechanism are respectively installed on the cabinet body, a suction cavity and a treatment cavity are arranged in the cabinet body in parallel, and the water curtain mechanism comprises a water curtain plate and a water tank arranged at the top of the water curtain plate. The water curtain plate is arranged on the side, close to the treatment cavity, of the suction cavity, the cyclone mechanism comprises a cyclone cylinder and a louver fan, the cyclone cylinder is arranged in the treatment cavity, the louver fan is rotationally arranged in the cyclone cylinder, the water circulation mechanism comprises a water tank, a water pump, a first flow guide plate and a baffle, the water tank is arranged at the bottom of the cabinet body, and the water pump conveys water in the water tank to the water tank and the cyclone cylinder; one end of the baffle plate is connected with the water curtain plate, the other end of the baffle plate extends towards the treatment cavity, the baffle plate covers the first guide plate, and the baffle plate and the first guide plate form a channel for communicating the suction cavity with the cyclone cylinder. The paint spraying waste gas treatment device is simple in structure and high in paint spraying waste gas treatment rate.

The invention provides an environment-friendly quick-drying paint mist recovery system for automobile repair paint spraying, and relates to the technical field of paint mist recovery. The environment-friendly quick-drying paint mist recycling system for automobile repair paint spraying comprises a paint spraying chamber, a fan, a spraying device, a circulating water system, a paint mist coagulant adding device, a paint mist settling pond or water tank, a filtering system, a slag removing device and a purified air discharging device, and a water curtain, a water curtain or a water rotating device is arranged in the paint spraying chamber and can capture paint mist; an air suction opening is formed in the front end of the fan, air containing paint mist is sucked into the system, the spraying device is arranged in the system and comprises a spraying pipe and a spraying head, and water or other liquid is sprayed through the spraying head. According to the paint mist purification device, the paint mist purification efficiency is high, paint mist particles with various particle sizes can be effectively captured, especially the treatment effect on fine paint mist is good, the paint mist purification efficiency can generally reach 90% or above, continuous operation can be achieved, and the paint mist purification device is suitable for large-scale paint spraying operation.

The invention relates to the technical field of spraying equipment, in particular to environment-friendly automobile spraying equipment which comprises a support, a spraying mechanism, an isolation assembly and an air draft pipeline. The support is installed on the ground, the spraying mechanism is installed on the support, a water curtain assembly in the spraying mechanism intercepts and shunts water flow on a water curtain inclined face to form a water curtain, and the water curtain continuously flows to the backflow assembly to be recycled and then is filtered through the filtering assembly to be reused. A transparent film in the isolation assembly isolates paint in the spraying space from splashing, and an operation sleeve is arranged for manual spraying operation. The air draft pipeline is arranged on the upper portion of the spraying assembly, and the lower portion of the air draft pipeline is perpendicular to the upper portion of the interior of the spraying mechanism.

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 utility model provides a vacuum etching device and a vacuum developing, etching and film removing production line, and the vacuum etching device comprises a rack, a conveying roller assembly for conveying workpieces along the longitudinal direction, a liquid storage tank, a liquid conveying assembly, a spraying assembly, a circulating pump, a circulating pipe, a vacuum generator and a plurality of vacuum suction knife assemblies, a water curtain sealing assembly for spraying a water curtain to a workpiece is arranged at an inlet and / or an outlet of a sealing cavity of the rack, the spraying assembly comprises a plurality of spraying pipes and a plurality of nozzles, the extending direction of the spraying pipes intersects with the longitudinal direction, and nozzle sets extending in the transverse direction are formed on the spraying pipes. The two ends of the circulating pipe are communicated with the liquid storage tank, the circulating pump and the vacuum generator are both arranged on the circulating pipe, the vacuum suction end of the vacuum generator is communicated with the vacuum suction knife assemblies, each row of nozzle sets correspond to one vacuum suction knife assembly, and the vacuum suction knife assemblies are arranged on the upstream of the corresponding nozzle sets in the longitudinal direction. According to the utility model, the spraying uniformity is good, and the etching liquid can be ensured to be fully contacted with the printed circuit board, so that the etching quality is improved.

The invention relates to a full-gap high-pressure roller type quenching device and a quenching method. The full-gap high-pressure roller type quenching device comprises a water spraying system, a roller way system and a hydraulic lifting system. The roller way system comprises a plurality of spiral roller sets, and each spiral roller set comprises two spiral rollers symmetrically arranged on the upper side and the lower side of the steel plate. The water spraying system comprises a plurality of gap nozzle sets. And a spiral roller group is correspondingly arranged behind each gap nozzle group. Each gap nozzle set comprises two gap nozzles symmetrically arranged on the upper side and the lower side of the steel plate, and when the gap nozzles are used, a water curtain is sprayed in the moving direction of the steel plate so that a water curtain included angle can be formed between the water curtain and the wall face of the steel plate. The water curtain included angle formed by the first gap nozzle set is smaller than the water curtain included angle formed by the second gap nozzle set, the water curtain included angle formed by the second gap nozzle set is smaller than the water curtain included angles formed by the other gap nozzle sets, and the water spraying amount of the gap nozzle sets is gradually decreased. The steel plate alloy can be reduced, the cost is reduced, and the problems existing in the prior art are well solved.

The invention discloses a single-hole pressure adjusting method, device and equipment for a water curtain test of an underground water-sealed cave depot and a storage medium, and relates to the technical field of geological engineering.The method comprises the steps that firstly, a rock mass acoustic impedance spectrum is collected, intrinsic mode decomposition is carried out to extract geologic feature components, and the rock mass acoustic impedance spectrum is obtained; processing the target pressure value, the current pressure value and the geologic feature component by using a pressure-opening coupling model based on acoustic feature extraction, time sequence dynamic analysis and physical constraint decoding to obtain a reference valve opening; then, a water curtain hole valve is adjusted according to the reference valve opening degree, and the pressure change acceleration is monitored in real time; calculating an opening compensation increment and a damping attenuation coefficient based on the pressure change acceleration, and further generating a target valve opening; and finally, the valve is adjusted to the target opening degree, so that the water curtain hole reaches the target pressure value. According to the invention, high-precision self-adaptive adjustment of the pressure of a single water curtain hole can be realized in the water curtain test of the underground water-sealed cave depot.

The invention relates to the field of waste gas treatment, in particular to a magnetic reaction kettle gas purification and deep filtration cooperative treatment device which comprises a treatment tank, an end cover is arranged at the upper end of the treatment tank, a gas inlet pipe is communicated with the bottom of the treatment tank, a gas outlet cylinder is fixedly arranged on the end cover, and an aeration pipe is rotatably mounted at the bottom in the treatment tank. A gas collection cylinder is fixedly arranged at the bottom of the end cover, a plurality of spraying pipes are uniformly arranged on the outer wall of the gas collection cylinder in the circumferential direction, and a plurality of nozzles are longitudinally arranged on the outer walls of the spraying pipes at equal intervals. A plurality of layers of water curtains can be formed in the treatment tank by utilizing the spraying pipe, so that waste gas can be in contact with spraying liquid for multiple times in the rising process, and meanwhile, particle impurities attached to the filter screen can be cleaned, so that the filtering and adsorbing effects of the filter screen are ensured; the integrated treatment process of aeration dispersion, spraying purification and filtration adsorption of the waste gas is realized.

The invention discloses a single-hole cluster test method, device and equipment for cave depot water curtain holes and a storage medium, and relates to the technical field of underground engineering and water sealing.The method comprises the steps that a test instruction input by a user is received; when the test instruction is a single-hole water injection fallback test instruction, sending a single-hole water injection fallback test control signal to a programmable logic controller of the target water curtain hole through an OPC server so as to perform a single-hole water injection fallback test and collect first test data; when the test instruction is a water curtain effectiveness test instruction, water curtain effectiveness test control signals are sent to programmable logic controllers of all the water curtain holes through the OPC server, so that water curtain effectiveness tests are carried out on all the water curtain holes, and second test data are collected; and obtaining a test result according to the first test data and the second test data. According to the application, remote data acquisition and test control of the water curtain hole cluster can be realized without entering the cave depot by field personnel, and meanwhile, the test efficiency and the data accuracy are improved.

The invention discloses a slag discharging treatment system of flame cutting equipment, and relates to the technical field of flame cutting equipment.The structure of a slag discharging device for the flame cutting equipment in the prior art is optimized and improved, and a hard plate body is obliquely arranged at the position, close to the oblique lower portion of cutting flame, of the top of a slag cutting container; a water pipe is used for spraying water towards the top face of the hard plate body from the inclined upper portion of the hard plate body, so that the sprayed water impacts the top face of the hard plate body, and then a water curtain is formed; the formed water curtain impacts and wraps cutting slag generated by cutting operation at the position close to cutting flame, the cutting slag is cooled rapidly and efficiently, and dust dissipation and filter layer damage are effectively reduced; the form and drop point of the formed water curtain are changed by adjusting the water spraying amount of the water pipe in unit time, concentrated accumulation of cutting slag is avoided, and the filtering layer and the container capacity are fully utilized; the drop point of the water curtain is changed by adjusting the water spraying amount, so that the water curtain repeatedly impacts the cutting slag on the filter layer, and efficient and sufficient separation of the cutting slag is assisted.

The invention discloses an underground water seepage analysis and prediction method based on physical-data cooperative driving, and belongs to the field of underground water seepage, and the method comprises the following steps: establishing a hydrogeological numerical model, carrying out seepage simulation calculation, and carrying out comparison verification with field monitoring data to realize accurate mapping; meanwhile, a machine learning data set is constructed by utilizing a numerical simulation result, a prediction model based on a Stacking integrated learning structure is established in combination with field data of a construction roadway, a water curtain layer and an oil storage cavern layer, and the water seepage amount or the underground water level after excavation of a rock mass in front of a tunnel face is predicted by taking geological, hydrological and construction parameters as input. According to the method, a physical mechanism and data driving are fused, the prediction precision and interpretability are remarkably improved, and a scientific basis is provided for cave depot project grouting and excavation optimization.

The utility model relates to the technical field of arsenic oxide crystallization, in particular to an arsenic oxide cooling crystallization liquid inlet device, which comprises a crystallization kettle, a guide plate, a diversion barrel and a circulating pump, a mounting hole is formed in the middle of the guide plate, a hollow sleeve is fixedly connected in the mounting hole, and the top of the hollow sleeve is fixedly connected with an upper cover of the crystallization kettle. The flow guide plate plays a role in dispersing water flow, the flow dividing barrel is fixedly connected to an upper cover of the crystallization kettle, and an inner cavity of the flow dividing barrel is fixedly communicated with flow dividing pipelines arranged in a circumferential array. Through the cooperative design of a flow guide plate, a flow dividing barrel, a flow dividing pipeline and a circulating pump, an arsenic solution in a crystallization kettle can be pumped by the circulating pump and conveyed into the flow dividing barrel, the arsenic solution flows out in a water flow column state through the flow dividing barrel, and under interception of the flow guide plate, the water flow column is scattered into a water curtain; and the water curtain is sprayed on the inner wall of the crystallization kettle and flows down from the inner wall for rapid cooling, so that the cold and heat transfer effect is good and the crystallization process of the arsenic solution is accelerated through a circulating cooling mode.

The invention relates to a humidification control method and system for an air cabinet heating air conditioning unit. The humidification control method comprises the following steps that purified fresh air is cooled and dehumidified; the cooled and dehumidified fresh air and return air are mixed, and three-dimensional spiral vortex mixed airflow is formed; according to the temperature and humidity distribution data of the three-dimensional spiral vortex mixed airflow, a middle surface air cooler and a rear surface air cooler are controlled to conduct secondary cooling and temperature control treatment on the three-dimensional spiral vortex mixed airflow; a high-pressure water mist humidification system is adopted for carrying out humidification treatment on the three-dimensional spiral vortex mixed airflow obtained after secondary cooling and temperature control treatment, moisture filtering is carried out on the humidified three-dimensional spiral vortex mixed airflow through a honeycomb-shaped water curtain, and supplied air obtained after moisture filtering is input into a target workshop through a draught fan. The technical problems that an existing system usually adopts a simple steam humidification or wet film humidification mode, the response speed is low, the adjusting precision is low, and the requirement for dynamic humidity change in the complex environment is difficult to meet are solved.

The invention belongs to the technical field of soil layer drilling, and particularly relates to a construction drilling device and a supporting structure construction method.The device comprises a control mechanism, a bearing mechanism, a drilling mechanism, a dustproof mechanism and a backflow mechanism; the drilling mechanism comprises a drilling machine and a connector; the connector is used for connecting a drill bit and an output shaft of the drilling machine; the bearing mechanism comprises a bearing plate and a mounting plate for mounting a drilling machine, and the mounting plate is movably arranged on the side wall of the bearing plate; the movement of the bearing plate and the mounting plate is controlled by a control mechanism; the dustproof mechanism comprises a water curtain nozzle and a cooling nozzle; the water curtain nozzle and the cooling nozzle are annularly and uniformly arranged on the mounting plate along the axis of the connector; nozzles of the water curtain sprayers are obliquely arranged; through the cooperation of the structure, a cylindrical water curtain can be formed when the device drills a soil layer, the generated water curtain makes contact with a rock wall in real time, and dust is prevented from flying out as much as possible. By means of the device, efficient construction is conducted on a soil layer or a rock wall, and installation of a follow-up supporting structure is facilitated.

The invention provides an underground cave depot water curtain hole investigation method, and relates to the technical field of underground cave depot investigation. The water curtain hole investigation method is a novel underground water-sealed cave depot construction investigation method. The method breaks through the cognition of the underground water-sealed cave depot about the use function of the water curtain hole in decades of years in China. The water curtain holes are formed in the position about 25 m above the oil storage cavern in parallel, the arrangement distance is smaller than ten m, the water curtain holes have the advantages of being close to the oil storage cavern, comprehensive in coverage range and capable of covering the oil storage cavern in advance, the oil storage cavern is finely surveyed in advance through the water curtain holes, the engineering geology and hydrogeology conditions of the oil storage cavern are found out, and the oil storage cavern can be found out in advance. A water curtain hole investigation result is established before construction of the oil storage cavern, grouting water plugging and supporting design of the oil storage cavern can be effectively guided, water seepage control of the underground water-sealed cavern and stability of the cavern are ensured, the project quality of project construction of the underground water-sealed cavern is integrally improved, and the later operation cost is greatly reduced.

The invention relates to the technical field of seepage detection, and provides a water curtain hole fractured rock mass seepage detection method and device and a storage medium, when the inner wall of an oil storage chamber has a water seepage area meeting the water seepage condition, potential associated water curtain holes having a water guide association relationship with the water seepage area above the water seepage area are determined; when the potential associated water curtain hole is a target abnormal water curtain hole, preliminarily determining a preliminary water guide structure between the water seepage area and the target abnormal water curtain hole, acquiring in-hole geological structure development information of the target abnormal water curtain hole, and determining an in-hole abnormal interval according to the in-hole geological structure development information; and determining a target water guide structure between the water seepage area and the in-hole abnormal interval, and taking the target water guide structure as a target area for seepage control treatment. According to the method, the specific position, the permeability characteristic and the grouting characteristic of the water curtain hole water guide structure can be accurately and rapidly detected, so that local grouting treatment of water guide cracks is performed through the water curtain holes in a targeted manner, and the water seepage amount of the oil storage cavern is effectively controlled.

The invention relates to the technical field of laser cutting, in particular to a laser cutting machine with an automatic slag removal function. Comprising a fixing shell, the fixing shell is fixedly connected to the outer side of a sword grid, a water supply channel is formed in the fixing shell, the fixing shell is composed of low prismatic table parts and high prismatic table parts, the multiple low prismatic table parts are arranged at intervals in a line shape, the high prismatic table parts are connected between every two adjacent low prismatic table parts, and through holes I are formed in the top faces of the low prismatic table parts at intervals; and through holes II are formed in the top face of the high prismatic table part at intervals, and the through holes II communicate with the water supply channel. Cold water is conveyed into the water supply channel through the water supply mechanism, so that the cold water emerges through the through hole I and the through hole II and flows downwards along the outer wall of the fixed shell, a water curtain can be formed on the outer wall of the fixed shell, slag can be directly cooled and solidified when splashing to the water curtain and falls downwards, the slag is prevented from being accumulated on the surface of the sword grid, and the service life of the sword grid is prolonged. Therefore, the cutting precision can be guaranteed, and the surface of the sword grid does not need to be manually cleaned.

The invention provides an arrangement method of an excavator spraying and dust falling device and the dust falling device, and relates to the technical field of excavators. The method comprises the following steps: determining a bucket and a required spraying range around the bucket; determining a nozzle mounting reference position; according to the transverse length and the longitudinal length of the spraying range, the number of transverse each row of sprayers and the number of longitudinal each column of sprayers are calculated by combining the effective spraying area of the single sprayers; calculating an included angle between a transverse nozzle and the horizontal direction and an included angle between a longitudinal nozzle and the vertical direction according to the distances from the highest point, the lowest point and the farthest point of the spraying range to the nozzle mounting position; and installing the nozzles according to the calculated number and angle of the nozzles, and controlling the nozzles to spray to form a water curtain covering the spraying range. In the operation process of the excavator, spraying and dust falling are carried out at the same time, the excavator bucket can be cooled, dust generated in the excavation process can also be treated, efficiency is high, cost is low, the spraying water amount is small, accumulated water cannot be generated, and operation safety and operation efficiency are guaranteed.

The invention provides a method for analyzing and optimizing effectiveness of a water curtain system of an underground water-sealed cave depot, which comprises the following steps of: collecting and sorting field water curtain hole effectiveness test data, and preliminarily judging the connectivity between adjacent water curtain holes according to the variation trend of the pressure of odd and even water curtain holes in a test; for the communicating water curtain holes, the connectivity efficiency of the water curtain holes is analyzed by calculating the fluctuation index of the communicating water curtain holes, and when the fluctuation index of the communicating water curtain holes is lower than a certain value, the communicating water curtain holes are judged to be low-efficiency water curtain holes; when the fluctuation index is higher than or equal to a certain value, the water curtain hole is a normal-efficiency water curtain hole; whether the water level meets the lowest water level required in the operation process of the underground water-sealed cave depot or not is judged by analyzing the water level above the water curtain hole in the test, and when the water level above the water curtain hole does not meet the requirement, the water curtain hole is considered to be invalid; and the connectivity between the water curtain holes, the water curtain hole efficiency and the water curtain hole effectiveness are comprehensively considered, the effectiveness of the water curtain system of the underground water-sealed cave depot is determined, and a water curtain hole patching scheme is provided.

A method for testing a tunnel fire suppression system in the form of a water deluge system having a wet side and a dry side separated by a valve, includes the step of providing a nozzle arrangement comprising a plurality of nozzles, with each nozzle disposed in or coupled to an outlet of the water deluge system. The nozzle arrangement comprises, is coupled to or operatively associated with a sensor arrangement configured to measure the pressure of air at each of the plurality of outlets of the water deluge system and output one or more output signals indicative of the pressure of the air at the one or more outlets. The method includes providing a supply of pressurised air through the water deluge system using a blower coupled to the water deluge system. The method further includes measuring the pressure of the air at the one or more outlets of the water deluge system and outputting an output signal indicative of the pressure of the air at the one or more outlets, and conveying the output signal to a processing system configured to determine from said one or more output signals the flow rate of the air supply at the one or more outlets.

The utility model discloses an intelligent control agricultural planting greenhouse which comprises a greenhouse body, rainwater treatment assemblies are arranged on the two sides of the greenhouse body, and side plates with door plates are arranged on the two sides of the greenhouse body. The two side plates are provided with watering equipment and cooling equipment correspondingly, the watering equipment and the cooling equipment are both connected with a rainwater treatment assembly, rainwater flows into a cooling water curtain, meanwhile, a first fan is started to blow air to the surface of the cooling water curtain, and a second fan is started to suck the interior of a first-stage water storage bin through an air inlet pipe; the air is cooled by the cooling water curtain, so that wet cold air can be input into the greenhouse body, and the structure can fully reuse resources of the nature and reduce the cooling cost; when too much rainwater is not collected, the interior of the first-stage water storage bin can be connected with tap water, the whole cooling process is not affected, and the cost is greatly reduced.

The invention relates to the technical field of dust removal equipment, in particular to water curtain dust removal equipment which comprises a dust removal cylinder, a driving part is arranged at the top of the dust removal cylinder, a first transmission gear is arranged at the output end of the driving part, a first dust removal assembly is arranged on the dust removal cylinder, and a second dust removal assembly is arranged on the first dust removal assembly. The auxiliary net has the beneficial effects that in the process that dust-containing airflow penetrates through the water curtain or impacts the water curtain on the auxiliary net, when the dust-containing airflow is high in flow speed and impact force, the position, impacted by the dust-containing airflow, of the vertical water curtain on the auxiliary net changes ceaselessly, the integrity and uniformity of the position, impacted by the dust-containing airflow, of the water curtain are guaranteed, and the dust-containing airflow is prevented from entering the water curtain. And when the flow speed of the dust-containing airflow is low and the impact force is weak, dust removal is sequentially carried out on the dust-containing airflow through a vertical water curtain on the auxiliary net, water mist sprayed out of the spray head and a conical spiral water curtain formed at the spiral plate, and the dust removal effect on the dust-containing airflow is further improved.

The utility model discloses a mobile air conditioning system which comprises an outer shell (1), a first working cavity located at the top, a second working cavity located in the middle and a third working cavity located at the bottom are arranged in the outer shell (1), and a hot water tank (2), a refrigeration water tank (3) and a compressor (4) are arranged in the third working cavity. Water in the refrigeration water tank (3) passes through the heat exchange cylinder (5) through a first water pump (8), then enters the second water curtain assembly of the second working cavity and flows back into the refrigeration water tank (3); and water in the hot water tank (2) enters the second water curtain assembly through a second water pump (10) and flows back into the hot water tank (2). According to the movable air conditioning system, the structure of upper heat dissipation, middle refrigeration and lower water tank is adopted, water conveyed to the second water curtain of the cold air outlet is cooled through the evaporator of the compressor, the temperature of air blown out through the second water curtain can be rapidly reduced, and meanwhile self-circulation of water is achieved.