1569 results about "Water curtain" patented technology

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 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 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 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 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 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 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 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 invention provides a movable circulating water curtain fire extinguishing trolley for a vehicle chassis fire disaster. The movable circulating water curtain fire extinguishing trolley comprises a crawler trolley; a water storage tank; the water collecting disc is connected with the water storage tank or the water supply pipeline through a water return pipeline; the filtering assembly is arranged above the water collecting area of the water collecting disc; the water inlet end of the upward spraying unit is communicated with the water storage tank or the water supply pipeline through the water supply pipeline; the water inlet end of the circulating water pump is connected to the water collecting area in the water collecting disc, and the water outlet end is connected to the water storage tank or the water supply pipeline; the sensor assembly is used for collecting the distance between the vehicle chassis and the water collecting disc; the execution module is used for receiving the current distance between the vehicle chassis and the water collecting disc and sending a corresponding spraying included angle conversion instruction to the upward spraying unit; wherein the water storage tank, the upward spraying unit, the water collecting disc, the filtering assembly and the circulating water pump jointly form a closed insulating fire extinguishing agent circulating loop, so that the fire extinguishing adaptability and efficiency are improved, and meanwhile, the moving stability of the fire extinguishing trolley can be improved through selection of the crawler trolley.

Disclosed is a design method for a bridge main cable fire-fighting water curtain protection system, comprising the following steps: S1: a fire detector and spraying branch pipes are arranged along a bridge main cable, a plurality of water curtain nozzle groups for extinguishing fire of a bridge are arranged on the spraying branch pipes, the water curtain nozzle groups are connected to a water supply system, and the water supply system and the fire detector are electrically connected to a control system; S2: the arrangement distance and the spraying protection area of the water curtain nozzle groups are determined, water curtain spraying appearance curves under a set design pressure and flow rate are drawn on a vertical and horizontal coordinate grid diagram and on the basis of a provided water curtain nozzle spraying profile diagram, and it is ensured that the water curtain spraying appearance curves of two adjacent water curtain nozzles have an intersection point; and S3, each spraying branch pipe is connected to a corresponding water supply branch, each water supply branch is provided with a pressure reducing valve for controlling the water pressure of the corresponding spraying branch pipe, and the pressure reducing valve on each water supply branch needs to independently set an outlet pressure.

The present invention relates to the technical field of tunnel cooling and dust removal, and in particular to a circulating water curtain type tunnel cooling and dust removal device, comprising: a main body support, a plurality of spraying devices, a moisture collection device and a water supply device; the moisture collection device comprises a phase change material interlayer and a cooling water layer, an air inlet is arranged inside the phase change material interlayer, and the cooling water layer covers the outside of the phase change material interlayer; the cooling water layer comprises a cooling water layer inlet and a cooling water layer outlet, and the cooling water layer outlet is connected to the water outlet of the moisture collection device; the water supply device comprises a filter element, a water supply device water inlet is arranged on one side of the filter element, a water supply motor is arranged on the other side of the filter element, and the water supply device water inlet is connected to the water outlet of the moisture collection device; the main body support has a built-in water supply pipeline, and the water supply pipeline connects a plurality of spraying devices and the water supply device. The present invention utilizes tiny water mist to absorb dust and heat, so as to achieve simultaneous cooling and dust removal of the tunnel, without the need for external devices, energy saving and high efficiency, recycling of water, and significant saving of water resources.

The invention discloses an angle-variable and self-revolution wafer base device, and belongs to the technical field of wafer bases, the angle-variable and self-revolution wafer base device comprises a revolution base, a gear carrier is fixedly connected to the center of the top of the revolution base, and a base is arranged above the gear carrier. According to the cooling device, an external liquid supply device conveys cooling water into the connecting base through a cooling water inlet pipe, inclined blades in the connecting base drive a driving shaft and a double-end protruding block to rotate, a sliding block drives an annular gear and a cooling disc to rotate through a rack, and the rotating cooling disc centrifugally throws out the cooling water; a uniform and dead-corner-free cooling water curtain is formed, the rotation shaft and the adjusting shaft are completely wrapped, the cooling uniformity of the peripheral side of the shaft body is ensured, stable and efficient heat exchange is achieved, sprayed cooling water can cool the revolution seat and the gear carrier at the same time, the influence of the high temperature in the reaction cavity on the device is reduced in an auxiliary mode, and the reaction efficiency is improved. And the operation reliability and the overall performance of the device are obviously improved.

The air-core reactor with the auxiliary heat dissipation function comprises a reactor body and a heat dissipation assembly, the bottom of the reactor body is installed through multiple sets of supporting columns, and the heat dissipation assembly is located below the reactor body and located among the multiple sets of supporting columns; the heat dissipation assembly comprises a heat dissipation pipe and a storage tank for storing a water source, the heat dissipation pipe is divided into an air inlet part, a cooling part and an air outlet part, an air deflector is arranged on the hollow inner wall of the heat dissipation pipe, the storage tank penetrates through the air deflector, and the air inlet part and the air outlet part form a cooling channel to communicate the air inlet part with the air outlet part; the reactor body is provided with a first air outlet piece and a second air outlet piece, and the air outlet part is connected with the first air outlet piece and the second air outlet piece through an air pump. According to the structure, the air flow path is prolonged through the spiral air guide plate, the air inlet fan forcibly supplies air to increase the air velocity, the water curtain plate and a water circulation system of the storage tank are combined to strengthen heat exchange, and meanwhile the first air outlet piece and the second air outlet piece are matched with the sucking pump to form a vertical convection three-dimensional cooling channel, so that the problems of low heat dissipation efficiency and easy heat accumulation are effectively solved; and the service life of equipment is prolonged.

The utility model discloses a movable paint spraying waste gas collecting room which comprises a ground rail, a pulley, a motor, a waste gas collecting room body, a roller shutter door, an air feeder, an air bellow, a water curtain cabinet and a fan which are sequentially connected. The two parallel ground rails are fixedly laid on the ground, the pulleys are erected on the ground rails and connected with the motor and the waste gas collecting room, the roller shutter door is installed at the rear end of the collecting room, the air feeder is installed at the top of the waste gas collecting room and connected with the air bellow, the waste gas collecting room is in butt joint with the water curtain cabinet, and the water curtain cabinet is connected with the fan through the air pipe. The device has the characteristics of difficulty in collection of paint spraying waste gas of large workpieces, high investment of a traditional collection room, inconvenience in operation and maintenance and low safety use coefficient.

The present invention relates to the field of waste gas treatment, and in particular to a magnetic reactor gas purification and deep filtration coordinated treatment device, comprising a treatment tank, an end cap provided at the upper end of the treatment tank, an air inlet pipe provided at the bottom of the treatment tank, an air outlet fixedly provided on the end cap, an aeration pipe rotatably installed at the bottom of the treatment tank, the air inlet pipe extending into the aeration pipe and driving the aeration pipe to rotate by airflow, a gas collecting cylinder fixedly provided at the bottom of the end cap, a plurality of spray pipes uniformly provided circumferentially on the outer wall of the gas collecting pipe, and a plurality of nozzles arranged longitudinally at equal intervals on the outer wall of the spray pipe. The present invention utilizes the spray pipe to form a multi-layer water curtain in the treatment tank, so that the waste gas can come into contact with the spray liquid multiple times during the rising process, and can clean the particulate impurities attached to the filter screen at the same time, thereby ensuring the filtering and adsorption effect of the filter screen, and realizing an integrated treatment process of aeration dispersion, spray purification, and filtering and adsorption of the waste gas.

The invention discloses a metal dust processing cyclone type wet dust collector and an intelligent control system thereof. The cyclone type wet dust collector for metal dust processing comprises a box body, a multi-stage filtering device, a dust recovery device and an intelligent control device, the box body is provided with an exhaust inlet and an air outlet; a multi-stage filtering device is arranged in the box body and comprises a water curtain filtering area, a spraying pressing area and a water mist separation area which are arranged in sequence; the dust recovery device comprises a sewage treatment tank and an air locking and dust discharging device which are arranged at the bottom of the box body; the intelligent control device is used for monitoring water level, water flow, water pressure, temperature and air pressure difference parameters and automatically controlling the operation state of the system according to monitoring results. The intelligent control system is applied to the dust remover. The dust removal device has the following beneficial effects that through multi-stage filtration and intelligent control, the problems of low efficiency, poor safety, difficulty in maintenance and low automation degree when existing dust removal equipment is used for treating sand blasting and shot blasting dust are solved.

The invention relates to the technical field of coal mine underground water curtain dust removal, in particular to a coal mine underground water curtain dust removal device based on dust concentration detection. Comprising a moving frame, a first fixing frame, a dust concentration sensor, a second fixing frame, a fan frame, flow guide blades, nozzles, a connecting hose, a water tank, a water pump, a controller, a first control assembly, a second control assembly, a flow guide assembly and a regulation and control assembly. The sensor swings to scan space dust concentration, identifies a dust source core area, and adjusts the nozzle angle and the flow guide blade rotating speed in a linkage manner to form a directional water mist curtain wall, new dust cloud is sensed and responded at the first time through active scanning detection, and dust is prevented from escaping through airflow. Tracking type scanning and spraying dust removal are carried out on dust cloud appearing in a certain range through continuous monitoring and scanning, and active tracking type efficient water mist dust removal treatment on dust is achieved.

According to the puffing device for the pet food disclosed by the invention, when a first motor is started, a rotating rod drives a cutting knife to rotate so as to continuously crush materials falling in a feeding hopper. Meanwhile, the extension end of the rotating rod drives the reciprocating screw rod to rotate, so that the cotton brush axially reciprocates along the conveying pipe. The water pump conveys cooling water in the water tank to the water spraying plate to form a mist-shaped water curtain, and the cotton brush evenly smears water on the surface of the pipe wall in the moving process. By means of the linkage design, anti-blocking operation and cooling treatment are conducted synchronously, and rotation kinetic energy of the rotating rod is converted into cutting kinetic energy and smearing mechanical energy at the same time. The spraying water forms a uniform water film under the smearing action of the cotton brush, and heat is evaporated. According to the technical scheme, hardened materials formed at the feeding port are crushed by the rotating blades immediately. A water film formed on the outer wall of the conveying pipe takes away heat through continuous evaporation, and the reciprocating motion of the cotton brush further ensures the heat dissipation uniformity.

The invention discloses an automatic control device for a water curtain hole of a water-sealed cave depot and the water-sealed cave depot, and the device comprises a control box which is provided with a mounting cavity, and a measurement and control pipeline is arranged in the mounting cavity and is connected with a water distribution pipe; a regulating valve, a flow meter and a water pressure sensor are mounted on the measurement and control pipeline; a connecting bulge is arranged at the rear part of the control box; the mounting plate is positioned on the rear side of the control box and is provided with a mounting hole; the connecting and fixing assembly penetrates through the mounting hole, one end, deviating from the control box, of the connecting and fixing assembly is embedded and fixed in a wall hole, and the other end is provided with a connector; one end of the communicating branch pipe is communicated with the water distribution pipe, the other end is communicated with the water curtain hole, and a first control valve is mounted; and one end of the drainage branch pipe is communicated with the water distribution pipe and is provided with a second control valve. The regulating valve, the flow meter and the water pressure sensor are integrated in the control box, so that the reliability and the stability of the system are improved. And through cooperation of the connector and the connecting protrusion, rapid installation and fixation of the control box are achieved, and the integrated design is also convenient for later maintenance and overhaul.

The invention discloses a new energy automobile charging pile high-low voltage power distribution cabinet and a ventilation control method thereof. The new energy automobile charging pile high-low voltage power distribution cabinet comprises a cabinet body and electrical elements installed in the cabinet body. A left air chamber and a right air chamber are respectively mounted on the left side and the right side of the cabinet body; the left air chamber and the right air chamber are the same in structure, and the internal structure of the left air chamber and the internal structure of the right air chamber are symmetrically distributed on the two sides of the cabinet body. Each of the left air chamber and the right air chamber comprises a shell, a fan partition plate, a drying filter plate and a water curtain; a ventilation opening opposite to the cabinet body is formed in the side wall of the shell, the fan partition plate, the drying filter plate and the water curtain are sequentially and transversely installed in the shell from inside to outside, and a water storage pool right opposite to the water curtain is arranged below the shell. Air is evaporated and cooled through the water curtain and then is subjected to humidity reduction through the drying filter plate, so that the humidity of the air entering the cabinet body does not exceed a set humidity value, the problem that moisture affects electrical elements is solved, and water and electricity are mutually independent.

The invention discloses a rotary kiln flue gas denitration device, and relates to the technical field of rotary kiln flue gas treatment.The rotary kiln flue gas denitration device comprises an outer furnace body assembly, a centrifugal furnace assembly and a through assembly, a flue gas through pipe is arranged on the inner side of the bottom of the outer furnace body assembly, and a rotating pipe is arranged at the outer end of the top of the flue gas through pipe; a centrifugal furnace assembly is arranged in the outer furnace body assembly. The water inlet pipe is connected with an external water source, when the centrifugal furnace body rotates, a water curtain is sprayed into the furnace through the spraying head, the water curtain makes contact with high-temperature flue gas to achieve cooling and adsorb dust particles, dust-containing water is thrown to the outer wall under the action of centrifugal force, and dust removal is completed synchronously; due to the fact that an ammonia water method with titanium dioxide as a catalyst is adopted for flue gas denitration of the rotary kiln, high temperature easily causes sintering of the catalyst, and the catalytic efficiency can be reduced by dust, according to the design, centrifugal rotation is matched with spraying, the water-gas contact area is enlarged in a single process, the cooling and dust removing effects are enhanced at the same time, and therefore the denitration efficiency and the equipment operation stability are improved.

The invention relates to the technical field of intelligent fire fighting and fire prevention, in particular to an independent intelligent peripheral fire prevention system. The system comprises a fire monitoring and intelligent early warning system, an intelligent control center, a multi-layer three-dimensional protection system, a multi-water-source supply system and an independent power system. The monitoring and early warning system adopts a multi-mode sensor (temperature, smoke, infrared and visible light cameras, combustible gas detection and the like), and AI intelligent analysis is combined, so that automatic identification, early warning and response of fire behavior are realized. The intelligent control center is responsible for fire hazard grade evaluation and dynamic adjustment of the protection system. The multi-layer three-dimensional protection system comprises a high-pressure water curtain, an intelligent fire water monitor, an automatic spraying device and the like and is used for blocking an external fire source and accurately extinguishing fire. The multi-water-source supply system supports real-time recovery of municipal water sources, underground water storage ponds, rainwater collection systems, swimming pool water and fire fighting water, and has an intelligent switching function. The independent power system supports a municipal power grid, solar energy, a diesel generator and a standby battery pack so as to ensure that the system can still operate continuously under the condition that municipal power supply fails. The system can provide multiple fire protection guarantees of active detection, intelligent early warning, automatic protection and remote manual intervention, is especially suitable for high-fire risk scenes such as building periphery fire protection, forest fire prevention, high-risk material storage and open-air material stacking areas, and improves the independence, safety and reliability of a fire protection system.