1291 results about "Air door" patented technology

The invention provides a thermal power generating unit performance optimization control system and method, and the system comprises a data collection module which collects various real-time data in the operation process of a thermal power generating unit; the load prediction module is used for establishing a load prediction model and predicting a load change trend by comprehensively considering a historical load condition, a load change rate, a load change acceleration and an external interference factor; the optimization control module is used for dynamically adjusting fuel, an air door and air quantity according to a control strategy in combination with the load prediction result and the unit operation state; the actions of the regulating valve, the air door actuator and the water supply regulating valve are correspondingly controlled; the monitoring feedback module is used for realizing closed-loop control and self-correction; according to the method, a load prediction model based on the combination of time sequence analysis and a physical mechanism and a control strategy comprehensively considering multi-parameter collaborative optimization are utilized, so that quick response to load change, balance consideration of steam quality and combustion efficiency, self-adaptive stable operation under complex working conditions and improvement of overall performance are achieved.

The invention relates to the technical field of control and regulation systems, in particular to a hearth auxiliary regulation control system which comprises a data processing module, an analysis module, a control module, a regulation and control module, an optimization module and a safety early warning module. The data processing module collects temperature data of a hearth combustor area, a water cooling wall and a tail flue in real time through a distributed temperature sensor network, and a dynamic combustion field three-dimensional model is generated through Kalman filtering denoising, redundancy cross validation and a temperature compensation algorithm in combination with combustor flame position signals and an air door opening state. And the optimization module updates the strategy weight based on the combustion efficiency improvement rate, and reinforces learning to extend the adaptive boundary of the strategy library. And the safety early warning module calculates the matching coefficient of the pipe wall temperature and the allowable stress in real time, triggers a grading intervention strategy to reduce the overtemperature risk, forms full-process closed-loop control, and improves the thermal efficiency and the operation safety of the boiler.

The invention relates to the field of mine ventilation, in particular to an intelligent adjusting method and system for mine ventilation. The method comprises the following steps: constructing a dynamic topology model taking a roadway as an edge and taking a fan and an air door as nodes based on a mine CAD drawing; acquiring the actual wind pressure and the actual wind volume of each roadway branch in real time, performing inversion to obtain the current wind resistance, and updating the wind resistance attribute of the edge in the dynamic topology model by using the current wind resistance; calculating the optimal air volume of the roadway branch by using the updated dynamic topology model; based on the optimal air volume, target regulation and control parameters of the draught fan and the air door are obtained through solving by means of a particle swarm algorithm; and according to the target regulation and control parameters, the fan and the air door are adjusted through a fuzzy PID algorithm. The problem that in the prior art, mine ventilation adjustment is not intelligent and safe enough is solved, the theoretical optimal air volume is obtained through deep analysis of the mine, then ventilation adjustment is conducted step by step, and the scientificity and efficiency of ventilation adjustment are improved.

According to the combustion optimization method and device based on machine learning and the electronic equipment, the real-time operation data of the to-be-optimized system is input into the trained multi-target prediction model for data prediction processing, and the multi-target prediction result is obtained; the trained multi-target prediction model is a model which is established based on a graph neural network and is used for predicting performance indexes of the to-be-optimized system; according to a multi-target preset result and the real-time operation data, through the trained combustion optimization model, oxygen amount and air door opening adjustment processing is carried out on the to-be-optimized system, and the to-be-optimized system after combustion optimization is obtained; the trained combustion optimization model is a model which is constructed based on a distributed reinforcement learning algorithm and is used for carrying out combustion optimization on the to-be-optimized system by dynamically adjusting the oxygen content and the air door opening degree of the to-be-optimized system. Compared with the prior art, the embodiment of the invention can respond to the requirement of state change in real time in the combustion optimization process, improve the optimization effect and reduce the operation complexity.

The invention relates to the technical field of boiler combustion control, and discloses a boiler closed-loop combustion dynamic optimization control system based on big data, and the system comprises an intelligent sensing module which is used for obtaining and outputting time-synchronized monitoring data in real time; the edge calculation module is used for processing multi-source sensor data in real time, realizing data credible processing and combustion state feature coding, and executing local caching of working condition perception; the digital twin modeling module is used for constructing a combustion process dynamic model and realizing real-time prediction of a combustion state; the optimization control module is used for dynamically adjusting combustion parameters and achieving collaborative optimization of the air-coal ratio, the opening degree of a secondary air door and the over-fire air ratio; and the closed-loop execution module is used for executing and feeding back the control instruction and realizing transmission and closed-loop verification of the control instruction. The combustion efficiency can be improved, pollutant emission can be reduced, and the stability and safety of boiler operation can be enhanced.

The invention belongs to the technical field of path planning, and particularly relates to an unmanned vehicle path planning method and system based on the Internet of Things, and the method comprises the steps: determining all passable paths of a current monorail hoist; determining the passing difficulty of each path according to the length of each passable path, the gradient of each ramp on each path, the turning radius and turning angle of each curve on each path, the number of turnouts required to be wrenched when the current monorail hoist runs on each path and the number of air doors required to be opened; and according to the angle variation and the variation time of each air door, determining the influence degree of the current monorail hoist on the ventilation system when the monorail hoist operates on each path, and determining an optimal path by combining with the passing difficulty. According to the invention, the operation efficiency of the monorail hoist is improved, the operation cost is reduced, the influence on the mine ventilation stability is reduced on the premise of ensuring the safe passing of the monorail hoist, and the safety of the underground operation environment is improved.

The utility model relates to the technical field of rail transit fresh air systems, in particular to an air door actuator of a rail transit fresh air system, which comprises a mounting bottom plate, an air door plate, a support frame, a lifting assembly and a driving assembly, the driving assembly is mounted on the support frame and comprises a rotating shaft, a rotor iron core, magnetic steel and a stator, the rotating shaft is a hollow reducing shaft, and the rotor iron core is arranged on the rotating shaft. The rotor core comprises a large-diameter section and a small-diameter section, the rotor core is mounted at the upper part of the large-diameter section, a circle of cylindrical holes are uniformly formed in the bottom surface of the large-diameter section, magnetic steel and a stator are sequentially arranged outside the rotor core, and a brake is mounted at the upper part of the small-diameter section; the lifting assembly is provided with a ball screw and a lead screw nut, the lead screw nut is installed on the ball screw and fixed to the bottom face of the large-diameter section, the upper portion of the ball screw extends into the hollow portion of the rotating shaft, the lower end of the ball screw is connected with a guide plate, and the guide plate is fixed to the middle of the top of the air door plate. The structure is more compact, the design is more reasonable, the requirement for light weight of rail transit is met, and the waterproof and dustproof requirements can be met.

The invention discloses an intelligent control method and system for an automobile air conditioner, and relates to the technical field of intelligent sensing control of air conditioners. The intelligent control method and system for the automobile air conditioner comprise the steps that S1, multi-source data are collected and preprocessed, and a standardized data set is constructed; s2, multi-path temperature difference coupling characteristics are evaluated based on the standardized data set, and the cold and hot air mixing proportion and the air door opening degree are dynamically adjusted; s3, the adjustment adaptability of the multi-source temperature difference and the air outlet speed is analyzed, and opening and closing of an air door and the air supply flow are adjusted; s4, evaluating the thermal response coordination and execution stability of the channels, and adjusting the proportion and control priority of the cold and hot channels; and S5, air door adjustment and response consistency is monitored, the airflow adjustment track is corrected, and mismatch response is analyzed. The problems that most current automobile air conditioning systems cannot dynamically adjust the mixed airflow proportion according to the air inlet temperature change, the evaporator outlet temperature difference and the air blowing opening real-time temperature gradient, so that frequent manual intervention of a user is caused, and comfort and energy efficiency are affected are solved.

The invention relates to the technical field of power equipment, in particular to a transformer. The transformer comprises a shell and a fan assembly, the fan assembly comprises a cooling fan exhausting air back to the shell, and an air regulator is arranged on the side, back to the shell, of the cooling fan and comprises an air guide channel. The air guide channel comprises an inlet corresponding to the cooling fan, a same-direction air opening corresponding to the inlet, and a reverse-direction air opening which is staggered with the same-direction air opening and is opposite to the same-direction air opening in direction, and an air door is arranged at the same-direction air opening. The air door has an opening state of opening the same-direction air port under the condition that the external air direction is the same as the exhaust direction of the cooling fan, and a closing state of closing the same-direction air port under the condition that the external air direction is opposite to the exhaust direction of the cooling fan, and when the air door is opened, air of the cooling fan is exhausted from the same-direction air port; when the air door is closed, air of the cooling fan is guided by the air guide channel to be exhausted from the reverse air opening. Hot air is exhausted along the direction of external natural wind, and external upwind is not easy to influence the exhaust capacity of the cooling fan, so that the cooling effect is ensured.

The invention provides an air conditioner air supply control method, device and equipment and a vehicle. The air conditioner air supply control method comprises the steps that a target part is determined from at least one human body part of a driver and passengers of the vehicle according to an air supply mode of an air conditioner; adjusting the air outlet direction of an air door of the air conditioner based on the air supply mode and the position data of the target part; judging whether the air outlet direction of the air door meets the requirement or not according to the temperature data of the target part; and if the air outlet direction of the air door meets the requirement, the operation parameters of the air conditioner are adjusted according to the thermal environment parameters of the driver and passengers and a preset thermal comfort model. According to the method, the intelligence and accuracy of air supply control of the air conditioner are improved, especially in a dynamic environment, a driver and passengers can be kept in a good comfortable state in real time, and more comfortable and personalized air conditioner use experience is provided for the driver and passengers.

The invention discloses a six-dimensional judgment intelligent operation and maintenance diagnosis method and system for an oil field gathering and transportation station yard, and belongs to the technical field of oil field gathering and transportation intelligent operation and maintenance. Comprising a data acquisition and single point location model establishment module, a six-dimensional analysis and judgment module, a six-dimensional fusion processing module and a feedback updating module, comprising flow, pressure, temperature, liquid level, water content, pump frequency / current, valve position / state position, furnace gas amount / air door and station control alarm position data in an oil field gathering and transportation station. According to the six-dimensional judgment intelligent operation and maintenance diagnosis method and system for the oil field gathering and transportation station, by integrating multi-link analysis, dynamic threshold adjustment, a closed-loop optimization mechanism and safety guarantee design, the problems that current diagnosis is poor in stability, insufficient in precision, weak in decision support and the like are solved; and reliable technical support is provided for efficient and stable operation of an oil field gathering and transportation station.

The invention discloses an automobile air conditioner intelligent diagnosis and assessment method and system, and relates to the technical field of automobile air conditioner intelligent manufacturing. The intelligent diagnosis and assessment method and system for the automobile air conditioner comprises the steps that S1, multi-point temperature, air volume, airflow and environment data in the operation process of the air conditioner are collected and preprocessed, and a standardized vehicle-mounted state data set is constructed; s2, evaluating the comfort adjusting capacity and dynamically adjusting the opening degree of the air door in combination with the temperature and humidity air change and the stability approaching time; s3, the parameter recovery speed and the thermal load intensity are analyzed, and the air door switching rhythm is adjusted; s4, integrating comfort and environment adaptability evaluation results, and executing regulation and control resource redirection; and S5, jointly monitoring the environmental pressure and the regulation and control capability value, constructing a cross-scene scoring system, and marking strategy switching nodes. The problems that an existing air conditioning system lacks an assessment index with cooperation of a use scene and an environment as a core, and the control performance cannot be dynamically assessed in a cross-environment mode are solved.

The invention belongs to the field of wall type tangential combustion, and discloses a wall type tangential combustion method and system for combusting inferior coal, which can automatically adjust the gas amount and the air door opening by monitoring the pressure, the oxygen content and the gas flow in a hearth in real time. The accurate adjustment can ensure the optimal mixing proportion of the gas and the air, gas waste is avoided, the combustion efficiency is improved, and therefore the heat efficiency of the boiler is improved. The flame state information is continuously collected, the gas amount is adjusted in combination with flame stability, it is guaranteed that the combustion process is always in the optimal state, unburnt fuel and excessive discharged waste gas are reduced, and therefore the overall heat efficiency is improved. The combustion process is monitored in real time through the air pressure switch, the gas flow sensor, the flame ionization electrode and the like, and the gas amount and the air door opening degree are dynamically adjusted according to feedback signals. The automatic adjusting function can ensure that combustion is always in a stable and efficient state, and excessive or insufficient gas supply is avoided.

The invention discloses a one-stop offline detection method for an electric air door, and relates to the technical field of electric air door detection, and the method comprises the following steps: at the beginning of detection, an ultrasonic sensor carries out the comprehensive detection of the sealing performance of the electric air door at the initial sensitivity, and collects the leakage signal data of the air door in real time; and preprocessing the obtained leakage signal data, and aggregating the preprocessed data to establish a data set. By implementing initial sensitivity detection, data preprocessing and feature extraction, intelligent evaluation and sensitivity dynamic adjustment, the system can accurately identify leakage signals having actual influences on the performance of the air door, and misjudgment of tiny leakage caused by environmental fluctuation is avoided. According to the method, false alarm and unnecessary maintenance are reduced, resource waste and production downtime are reduced, and the reliability and flexibility of a detection system are improved at the same time. And by optimizing the maintenance period and improving the production efficiency, the economic benefit is remarkably improved.

The invention provides an intelligent control algorithm for dust removal of a steel ore tank and an operation effect monitoring method thereof, and aims to improve the energy efficiency and emission control capability of a dust removal system of the steel ore tank. The system comprises a data acquisition module, a hierarchical control module and a multi-objective optimization module. The data acquisition module is used for acquiring dust concentration, fan rotating speed, energy consumption and equipment state signals in real time; the hierarchical control module adopts the combination of model predictive control (MPC) and fuzzy PID control to accurately adjust the rotating speed of a fan, the ash removal period and the opening degree of an air door; and the multi-objective optimization module dynamically adjusts the dust-energy consumption weight ratio according to the electricity price time period, and optimizes the balance between energy consumption and emission. The invention further comprises an operation effect monitoring method, the operation effect of the system is monitored in real time, the energy-saving effect is evaluated and optimization suggestions are provided by means of data comparison and analysis, comprehensive evaluation of the energy-saving rate and the performance, visualization of a monitoring report and the like. And green transformation and low-carbon emission targets of a dust removal system of the steel and iron ore tank can be realized.

The invention provides a temperature control method and system for an automatic production line of a varnish-baking door. According to the method, a three-dimensional thermal field model including position coordinates, temperature difference values and area proportions is generated by dynamically scanning marching door body surface temperature distribution data; thirdly, a three-layer air duct system with the top, the middle and the bottom independently adjusted is constructed, the rotation angle and the airflow intensity of the flow guide plate of the corresponding layer are dynamically adjusted, and an airflow covering mode matched with the door body curved surface is formed; when the area proportion of the abnormal region exceeds the standard, the opening degree of an air door is adjusted, and a compensation air volume increment coefficient is synchronously calculated to generate a hierarchical compensation instruction; finally, the heat dissipation intensity is adjusted through an increment coefficient, and a directional heat dissipation loop is formed by cooperating with flow guide plate angle correction and a static pressure box vortex suppression device. According to the technical scheme provided by the invention, dynamic sensing of temperature abnormity in the curing process of the special-shaped door plate, multi-level airflow accurate compensation and closed-loop control of over-temperature protection are realized, and the curing uniformity and quality stability of a paint surface are improved.

The invention provides an air conditioner module which comprises a shell and an air door, and the shell comprises a main shell body; a rotating shaft of the air door is rotatably arranged on the main shell; the air conditioner module further comprises a rod piece which is arranged on the main shell in a sliding mode. The driven piece is arranged on a rotating shaft of the air door; the driven piece is connected to the rod piece in a sliding mode so as to be driven by the rod piece when the rod piece slides, and therefore the air door is driven to rotate on the main shell. The invention further provides a vehicle comprising the air conditioner module.

The invention discloses a coal-fired power plant boiler dry slag discharging unit cooling air system control method and system. The control method comprises the steps that S1, real-time operation data of a dry slag discharging unit are obtained; the real-time operation data comprises the slag tapping temperature, the slag falling section conveying belt ash temperature, the slag falling section conveying belt ash amount, the slag falling section conveying belt ash thickness, the fan power / cooling air door opening degree, the in-furnace cooling air volume, the in-furnace cooling air temperature and the cooling air initial temperature; s2, according to the obtained real-time operation data of the dry deslagging unit, a fan power / cooling air door opening degree instruction is obtained; and S3, the fan power / cooling air door opening degree is automatically controlled according to the fan power / cooling air door opening degree instruction. According to the method, the fan power / cooling air door opening degree can be adjusted in real time according to the slag quantity and the slag temperature, the cooling air quantity and the outlet ash temperature are accurately controlled, the ash temperature is stabilized within the target range, the stability of the system is enhanced when the boiler load changes or the slag quantity fluctuates, and the ash cooling effect is guaranteed.

The invention discloses an air-cooled heat dissipation phased-array antenna suitable for airborne satellite communication and a heat dissipation method of the air-cooled heat dissipation phased-array antenna. The air-cooled heat dissipation phased-array antenna comprises an antenna body, the antenna body is divided into an upper-layer T / R array plane, a middle-layer heat dissipation air channel and a lower-layer control module, the front end of the heat dissipation air channel is divided into an upper-layer convection channel and a lower-layer fan channel by an air channel partition plate, a fan is arranged in the fan channel, an air inlet communicated with the convection channel is formed in the front end of the antenna body, and an air outlet communicated with the fan channel is formed in the lower end of the antenna body. The rear end of the antenna body is provided with an air outlet communicated with the heat dissipation air channel, the side face of the antenna body is provided with a fan exhaust outlet communicated with the fan channel, and a wind shield which is opened in a one-way mode from back to front is arranged between the heat dissipation air channel and the fan channel. According to the heat dissipation method, the air-cooled heat dissipation phased-array antenna is adopted and is installed on an aircraft. The antenna has the beneficial effects that the design of the double-layer air channel heat dissipation system and the automatic air door is innovatively adopted, and the antenna can stably and reliably run in an all-weather long-term mode under the two working states of air and ground.

The invention relates to the technical field of ship construction, in particular to a ship broadside structure assembling method which comprises the following steps: marking an assumed center line, a horizontal line and a rib inspection line of a jig frame; the deck and the outer plate are installed on the jig frame to be positioned and fixed; marking datum lines on the deck and the outer plate according to the assumed center line, the horizontal line and the rib inspection line; a transverse component, a longitudinal component, a broadside toggle plate, a bulk toggle plate, a bottom longitudinal component, a side air door base and a fender are installed on the deck and the outer plate according to the datum line, and a broadside structure is formed; longitudinal reinforcements and a plurality of transverse reinforcements are welded and mounted on the broadside structures, and hangers are welded on the broadside structures; the broadside structure is hoisted to the installation position, and the broadside structure and the main ship body are welded; a pipe frame structure is welded on the broadside structure, and the longitudinal reinforcements and the transverse reinforcements are removed; and folding welding of the broadside structure and the surrounding ship body structure is completed. According to the invention, the quality after assembly can meet the requirements.

The invention relates to the technical field of fabric treatment equipment, in particular to fabric treatment equipment, a drying control method and electronic equipment. The fabric processing equipment comprises a fabric processing barrel and a drying system, the drying system comprises a plurality of sub-air ducts, and the sub-air ducts are all communicated with the interior of the fabric processing barrel to achieve regional air supply in the fabric processing barrel; each sub-air duct is provided with a sub-air door which can be controlled and adjusted; the controller is electrically connected with the multiple air duct air doors, and in the drying process, the controller cooperatively controls all the air duct air doors by obtaining temperature and / or humidity parameters of different areas in the fabric processing barrel, and uniform drying and heating of the fabric in the fabric processing barrel are achieved. According to the device, the multiple sub-air ducts correspond to all the designated areas, uniform covering and accurate adjustment of hot air in the fabric processing barrel can be achieved, and therefore the drying efficiency of the fabric is improved, and the use experience feeling of a user is improved.

The application relates to a high-efficiency lift flapping wing, a dragonfly-imitating aircraft and an aircraft flight posture control method. The high-efficiency lift flapping wing comprises a flapping wing body and a plurality of one-way air door blades; a plurality of air vents are arranged on the flapping wing body, each one-way air door blade covers the air vent, and the one-way air door blade is used for allowing airflow to pass through the air vent in one direction. The high-efficiency lift flapping wing, the dragonfly-imitating aircraft and the aircraft flight posture control method have the advantages of high lift efficiency, reduced flapping wing burden, improved aircraft service life and stability.

The utility model relates to a temperature control device with double refrigerating systems. The temperature control device comprises a first chamber, a second chamber, a first refrigerating unit, a second refrigerating unit and an electrical control system, wherein the first air outlet electric air door, the first air outlet, the third air outlet and the third air outlet electric air door are sequentially connected, and the first air outlet and the third air outlet are further connected with the air outlet of the first chamber; the second air outlet electric air door, the second air outlet, the fourth air outlet and the fourth air outlet electric air door are connected in sequence; the second air outlet and the fourth air outlet are further connected with the air outlet of the second chamber; the first return air inlet electric air door, the first return air inlet, the third return air inlet and the third return air inlet electric air door are sequentially connected, and the first return air inlet and the third return air inlet are further connected with the return air inlet of the first chamber; the second return air inlet electric air door, the second return air inlet, the fourth return air inlet and the fourth return air inlet electric air door are sequentially connected, and the second return air inlet and the fourth return air inlet are further connected with the return air inlet of the second chamber.

The invention belongs to the technical field of generator control, and particularly relates to a starting and charging control method for a parking generator system, which comprises the following steps: a generator performs self-starting or hand-pulling starting according to the voltage of a storage battery; when the generator is self-started, the stepping motor opens the accelerator and adjusts the air door and the accelerator according to the environment temperature to complete self-starting; when the generator is started by hand pulling, ignition action is carried out, after the generator is ignited, the stepping motor gradually accelerates the opening speed of the air door according to the environment temperature from low to high, and starting is completed; after the generator is started, entering a constant-current charging mode to charge an accumulator jar, converting into a constant-voltage charging mode after the voltage of the accumulator jar exceeds a preset voltage, and automatically closing the generator when the vehicle is started or the charging current is lower than a preset current in the charging process; by means of the method, the parking generator can be rapidly and automatically started, and more energy is saved in the charging process.

The utility model provides a hopper of a grab ship unloader, which relates to the technical field of ship unloaders and comprises a hopper body, an opening is arranged at the upper end of the hopper body, a first wind blocking wall, a second wind blocking wall, a land side wind blocking door and a sea side wind blocking door are respectively arranged at the upper end of the periphery of the opening, and the sea side wind blocking door comprises a first door body and a second door body. One side of the first door body is connected with a first wind shielding wall, one side of the second door body is connected with a second wind shielding wall, a moving gap is formed between the first door body and the second door body, and first spraying assemblies are arranged on the side, close to the second door body, of the first door body and the side, close to the first door body, of the second door body correspondingly. The upper end of the first wind shielding wall is rotationally connected with a first sealing cover, the upper end of the second wind shielding wall is rotationally connected with a second sealing cover, and third spraying assemblies are arranged on the opposite sides of the first sealing cover and the second sealing cover. And through comprehensive closed design and comprehensive application of the spraying assembly, generation and flying of dust are remarkably reduced, and the working environment is improved.

The invention discloses a mining air volume monitoring and control system, which relates to the technical field of coal mine safety ventilation and comprises a plurality of intrinsically safe sensors, at least one group of intrinsically safe control boxes, a controller and a power supply, the GQQ5 smoke sensor is connected with the sensor through a flame-retardant communication cable for a coal mine or in an infrared correlation mode to realize data convergence and instruction issuing, and the at least one intrinsic safety type base station is connected with a ground control center through a communication optical cable to support TCP / IP protocol transmission monitoring data. Dust concentration response is dynamically analyzed in combination with the wind speed change trend, linkage control over wind speed and dust concentration is achieved, the opening degree of an air door can be automatically adjusted or a spraying device can be controlled according to the dust raising trend, the underground dust treatment effect is effectively improved, and the method has the advantages of being high in practicability and improving the automation level of ventilation dispatching.

The invention relates to the technical field of mine safety equipment, in particular to a mining intelligent air door locking and air speed sensing control device. According to the technical scheme, the mining intelligent air door locking and wind speed induction control device comprises an air door channel body, multiple sets of locking mechanisms, an air door body, a displacement sensor, a wind speed sensor, an environment detection mechanism, a control unit, an alarm mechanism and a sealing assembly, and the multiple sets of locking mechanisms are arranged on one face of the air door channel body; an air door body is arranged at one end of the locking mechanism, and a displacement sensor is arranged on the surface of one end of the locking mechanism. By adopting the physical locking combination of the electromagnetic bolt mechanism and the dual-redundancy mechanical spring bolt and integrating the pressure sensitive diaphragm to monitor the sudden pressure change of the air duct, the safety redundancy of the locking mechanism is remarkably improved, and under the abnormal working condition, the system can automatically trigger locking and cut off a power source to prevent the air door from being opened unexpectedly, so that the safety of the air door is improved. The stability of a mine ventilation system is ensured.

The invention relates to the technical field of drying equipment, in particular to a vertical circulating fruit and vegetable drying machine with a heat recovery structure and a drying method. The vertical circulating fruit and vegetable drying machine with the heat recovery structure comprises a drying machine body, and a heat recoverer, a heater, a circulating fan and a drying chamber which are arranged in the drying machine body in the fresh air flowing direction; the heat recoverer is provided with a first air outlet used for exhausting waste gas. An inner circulation air door and an outer circulation air door are arranged on the side wall of the drying chamber and used for air outlet. The drying machine has the beneficial effects that key air doors such as the inner circulation air door, the outer circulation air door, the hidden push-pull air door and the second air outlet are arranged, the multiple air doors can intelligently switch three modes of total heat exchange, simple circulation and inner circulation according to high, medium and low humidity stages of the drying process, heat recovery and moisture removal balance is dynamically optimized, and the drying efficiency is improved. And the energy consumption is obviously reduced.

The invention provides a vehicle cabin fresh air exchange system which is arranged on a vehicle and comprises an air conditioner air inlet module arranged on the front portion of a cabin, and the air conditioner air inlet module comprises an air inlet fan, an air inlet door and a filter; the exhaust module is arranged at the side tail part of the trunk and comprises an exhaust fan and an exhaust air door; the detection module is used for detecting at least one of environment parameters inside the vehicle, environment parameters outside the vehicle, whether people exist inside the vehicle or not and gas exchange capacity inside and outside the vehicle in real time; the control module is used for controlling the opening and closing of the air inlet door and the air exhaust door and the operation states of the air inlet fan and the air exhaust fan according to the detection result of the detection module; the exhaust module is arranged and matched with the air conditioner air inlet module, external air can be guided in from the front portion of the vehicle, internal air can be guided out from the rear portion of the vehicle, and the purposes of reducing the internal temperature and exhausting turbid air are achieved; and meanwhile, the control module controls the air inlet module and the air exhaust module of the air conditioner, so that the exchange system has the characteristics of intelligence and low energy consumption.

The invention relates to the technical field of attapulgite crushing processing, and particularly discloses an attapulgite processing crusher with a dust falling function, the attapulgite processing crusher comprises a crushing chamber, a separation pad net is mounted at the lower position in the crushing chamber, and the space in the crushing chamber is divided into two parts; supporting frames are installed on the bottom face of the crushing chamber, a mounting table is arranged between the supporting frames, a crushing assembly penetrating into the crushing chamber is installed above the mounting table, a feeding opening and an ash discharging pipe are installed at the top of the crushing chamber, and an air door regulation and control assembly is installed on the vertical section of the ash discharging pipe. And the horizontal straight section of the ash discharge pipe is provided with a water mist dust falling and collecting assembly. When the dust discharging pipe discharges dust, the atomizing nozzles on all the spraying pipes face the right upper portion to conduct spraying sedimentation treatment on the dust, the dust discharging amount of the vertical section of the dust discharging pipe can be adjusted according to the actual dust discharging condition and the real-time dust falling capacity of the water mist dust falling collecting assembly, and it is ensured that the device has the long-term and reliable dust falling capacity.