79 results about "Air flow meter" patented technology

The invention belongs to the technical field of aluminum electrolysis, and particularly relates to an electrolytic aluminum oxide concentrated phase conveying solid-gas ratio monitoring system and method, and the system comprises a control system, a material tank system, a compressed air system and a concentrated phase conveying system; the output end of the charging bucket system is connected with the input end of the concentrated phase conveying system; the output end of the compressed air system is connected with the charging bucket system and the concentrated phase conveying system; an air flow meter is mounted on the compressed air system, a weighing sensor is mounted on the charging bucket system, and the control system calculates and controls the solid-gas ratio through the air flow meter and the weighing sensor; the solid-gas ratio is calculated and controlled through the control system, and the working efficiency is improved.

The invention relates to a multifunctional heat dissipating capacity testing device. The system comprises an engine, an engine water inlet pipe, an engine water outlet pipe, a fan, a water tank, an intercooler, a water inlet temperature sensor, a water outlet temperature sensor, an intercooling front pipeline, an intercooling rear pipeline, an intercooling air inlet temperature sensor, an engine air inlet temperature sensor, a water flow meter, an air flow meter, a baffle, an electronic fan, a water tank front temperature sensor and an intercooling front temperature sensor. An engine air inlet pipeline, an environment temperature sensor and an environment air conditioner. The invention further relates to a testing method using the multifunctional heat dissipating capacity testing device. The method can predict and solve the high temperature condition of the water tank and the intercooling system when the environmental condition and the whole vehicle configuration change, and saves the time cost and the labor cost.

The embodiment of the application provides a clothes dryer, comprising: a cabinet; a drying barrel and an air circulation system; an air inlet assembly and an air outlet assembly; a heater and an air inlet pipeline, an air flow meter; a filter screen, an air outlet pipeline and an air outlet fan, an air outlet motor and a fan; a controller connected with the air flow meter and the air outlet motor respectively, used for executing a clothes dryer filter screen detection program, the program comprising the following steps: controlling the air outlet motor to reach a preset rotating speed and keeping the air outlet motor running at the preset rotating speed; detecting a current power value of the air outlet motor in the process of keeping the air outlet motor running at the preset rotating speed and a historical power value detected in the process of historically executing the clothes dryer filter screen detection program, and judging whether the filter screen is blocked based on the current power value and the historical power value; and / or, obtaining an air speed value of the air flow meter and judging whether the filter screen is blocked based on the air speed value; if at least one of the above is yes, it is determined that the filter screen is blocked. The application can improve the accuracy of filter screen cleaning detection.

The utility model provides an automobile air flow meter, and belongs to the technical field of automobile accessories. Comprising a machine barrel, a maintenance seat is arranged at the top of the machine barrel, an opening communicating with the interior of the machine barrel is formed in the top of the maintenance seat, a heat preservation ring is fixed to the inner wall of the opening in a surrounding mode, positioning grooves are symmetrically formed in the two sides of the top of the maintenance seat, and a heat preservation cover is matched with the top of the maintenance seat; the butt joint cylinder is inserted into the top opening of the maintenance seat and abuts against the upper end face of the heat preservation ring, and positioning plates are symmetrically fixed to the two sides of the bottom of the heat preservation cover and inserted into the positioning grooves. According to the utility model, a multi-stage disassembly and assembly structure is adopted, so that core components can be quickly disassembled, assembled and overhauled during later overhaul without integrally disassembling and assembling the core components, the later overhaul and maintenance efficiency can be improved, and meanwhile, by arranging the heat preservation cover, the sealing effect on the interior of the machine barrel can be improved, the interference of external temperature is reduced, and the service life of the machine barrel is prolonged. And the hot-wire type air metering effect can be ensured.

The present application relates to the technical field of fuel cell, in particular to a fuel cell system and a vehicle, the present application constructs fault-tolerance control, so that after the flowmeter failure, the way of directly giving up the judgment of air flowmeter is abandoned, and the pressure data and temperature data are used for judgment, so that the air system control can still be normally operated, the actual stack flow pressure is maintained in the target range, and the normal operation of the fuel cell is realized.

The application provides a methanol reforming hydrogen production device test bench, and relates to the technical field of new energy sources.The methanol reforming hydrogen production device is connected with an air supply branch, a methanol water vapor supply branch, a heating branch, a reforming gas treatment branch and a temperature measurement branch.The air supply branch comprises a blower, an air flow meter and a temperature sensor 1.The methanol water vapor supply branch comprises a constant flow pump 1, a liquid flow meter 1 and a temperature sensor 2.The heating branch comprises a constant flow pump 2, a liquid flow meter 2, a temperature sensor 3 and a temperature sensor 4.The temperature measurement branch comprises a temperature sensor 5, a temperature sensor 6, a temperature sensor 7 and a temperature sensor 8.Feedback regulation is realized through the cooperation of a plurality of constant flow pumps, a plurality of liquid flow meters, a blower, an air flow meter and other controllable actuators and sensors, so that the reactant flow entering the methanol reforming hydrogen production device can be accurately controlled, and quantitative analysis on the performance of the methanol reforming hydrogen production device can be realized.

The utility model discloses an energy-saving system for preparing nitric acid by absorbing nitrogen oxide tail gas, which comprises a gas inlet buffer tank, a compressor, a compressed air inlet system and a NOx absorption tower system, the gas inlet buffer tank is connected with a NOx inlet pipe and an air inlet pipe, the air inlet pipe is provided with an air flow meter, nitrogen oxide tail gas is introduced into the NOx inlet pipe, and the NOx absorption tower system is connected with the compressor. A gas outlet of the gas inlet buffer tank is connected with a gas inlet of the compressor through a mixed gas inlet pipe, a gas outlet of the compressor is connected with the NOx absorption tower system through a mixed gas outlet header pipe, and the compressed air inlet system is connected with the mixed gas outlet header pipe; an air inlet pipe opening of the air inlet pipe is directly communicated with the atmosphere. Self-sucked air and NO in the tail gas react in the gas inlet buffer tank to generate NO2, so that the oxidation degree of the tail gas before entering the absorption tower is improved, the equilibrium concentration of nitric acid in the tower kettle of the absorption tower is improved, and the standing time required by the absorption tower is reduced; the self-sucked air can effectively reduce the usage amount of compressed air, and the energy consumption of the compressed air is reduced.

To provide a fuel cell system capable of effectively eliminating clogging caused by particulate matter.SOLUTION: The fuel cell system (A) includes: a housing container (9) for accommodating a cell stack (6) and a combustion unit (8) in an internal space (9s); an air supply passage (13) having an air filter (21), an air blower (7), and the housing container (9) connected in series, a flow meter (22) being disposed in the passage; and a control unit (10). The control unit (10) acquires an air flow rate of air passing through the air supply passage (13) and controls the flow rate by adjusting the duty ratio of power supply to the air blower (7). The control unit (10) calculates the degree of blockage of an air supply system (23) including the air filter (21), the air blower (7), and the air supply passage (13), on the basis of the duty ratio and the air flow rate, and also acquires the outside air temperature. The control unit (10) initiates air flow improvement operation on the basis of the degree of blockage, and determines the amount of water vapor to be supplied to the air supply system (23) on the basis of both the degree of blockage and the outside air temperature.SELECTED DRAWING: Figure 1

The utility model belongs to the fuel cell air compressor test field, and especially relates to a controllable humidity hydrogen fuel cell system single-stage air compressor test bench comprising an air filter used for inputting air; the first-stage temperature and humidity control box realizes temperature and humidity control based on electric heating and water spraying and is connected to the air filter; the second-stage temperature and humidity control box realizes temperature and humidity control based on a mold temperature controller and water spraying and is connected to the first-stage temperature and humidity control box; the air inlet pressure control valve is connected to the second-stage temperature and humidity control box; the air flow meter is connected to the air inlet pressure control valve; the single-stage air compressor is connected to the air flow meter; the first intercooler is connected to the single-stage air compressor; the dehumidification control box achieves dehumidification based on cooling of the mold temperature controller and is connected with the first intercooler. The exhaust control valve is connected to the dehumidification control box; a muffler connected to the exhaust control valve; and the inversion module is electrically connected to the single-stage air compressor, so that a humidity-controllable hydrogen fuel cell system single-stage air compressor test scheme is realized.

The application discloses a kind of air flowmeter circuit board splitting device, it is related to electronic component processing field, including bottom plate, sliding plate, positioning mould and rotating assembly;The translation device is equipped on the bottom plate, the rack is fixedly connected on the bottom plate, the rack is equipped with splitting device and two scrap collecting device, the positioning mould is rotatably connected with sliding plate, the rotation of pivot is used to drive piston rod to move up and down to generate an outward suction force in the case where additional dust collection equipment is not increased, then the dust and scrap generated in the split can be collected by the cooperation of reserved cavity and reserved slot and through slot between upper plate and lower plate;Rotatable positioning mould, cooperate with the splitting device of multiple saw blades, can rotate the circuit board after one pass, so that the circuit board is walked again, to and fro once can realize the splitting of circuit board, compared with using general equipment, efficiency is higher.

The invention relates to the technical field of fluid measurement and diagnosis, in particular to a diagnosis device and method for the air flow of a fuel cell, and the method comprises the steps: carrying out a multi-working-condition test before an air compressor leaves a factory, and building a standard characteristic map of the rotation speed-pressure ratio-flow of the air compressor; then, the rotating speed, inlet and outlet pressure, temperature and actual flow data of an air compressor are collected in real time in the operation process of the fuel cell system, the theoretical flow under the standard working condition is obtained by calculating the pressure ratio and inquiring the atlas, and meanwhile the actually-measured flow is converted into the standard working condition; finally, whether the air flow meter is abnormal or not is judged by comparing whether the deviation between the theoretical value and the converted actual value exceeds a threshold value or not, and therefore online real-time diagnosis and fault alarm of the flow meter are achieved. According to the invention, no extra hardware needs to be added, high-precision non-intrusive diagnosis can be realized only through a software algorithm and pre-stored data, and the reliability and maintenance efficiency of the fuel cell system are remarkably improved.

The invention discloses a control method for remote fault diagnosis and processing of a fuel cell air flow meter. The running condition of the fuel cell system can be monitored in real time, a fault detection mode in power-on self-test of parts such as an air flow meter is activated when the fuel cell is powered on, whether a fault exists or not is judged within the specified time, if no fault exists, a normal mode is entered, and a PID closed-loop control mode is adopted, so that the fault detection efficiency is improved. If a fault exists, entering a fault mode, and adopting an interpolation look-up table calculation mode to quickly compare and select a target value of pressure output according to the calibrated change curve data of the fuel cell current relative to the air inlet pressure of the electric pile, so as to ensure the quick and accurate implementation of the processing method; according to the invention, a full-life-cycle management mode of the air flow meter is realized through a power-on self-test-dual-algorithm mode switching-cloud cooperation three-level architecture, so that the state of the air flow meter is detected and diagnosed in real time, the state is controlled, prevention is carried out in advance, maintenance is carried out in time, and the operation smoothness is guaranteed.

The utility model discloses an air volume adjusting device of a constant-displacement air conditioner, which relates to the technical field of air volume adjustment of air conditioners, and comprises a constant-displacement air inlet air conditioner, one end of the air inlet air conditioner is communicated with an air flow meter through a pipeline, and the other end of the air inlet air conditioner is communicated with a precision filter through a pipeline, adjustable electric valves are mounted on a pipeline between the air inlet air conditioner and the air flow meter and a pipeline between the air inlet air conditioner and the precision filter, and the other ends of the adjustable electric valves between the air inlet air conditioner and the air flow meter are connected with an air pump through pipelines; according to the utility model, a part of air is pumped out from the rear part of the system through the air pump and is injected into the pipeline between the air inlet air conditioner and the air flow meter, so that the purpose of increasing the air volume is achieved under the condition that the displacement of the air inlet air conditioner is not changed, and the air flow in the brake emission measuring instrument is controlled through the opening degree of the two adjustable electric valves.

The utility model discloses a pneumatic stirring mechanism for sewage treatment, which comprises a main body assembly, the main body assembly comprises a sewage pool, an air pump, a filter box, an air pipe, an air flow meter, a pneumatic motor, a driving piece, a stirring piece and a drainage pipe, the air pump is arranged at the top of the sewage pool, the filter box is arranged at one end of the air pump, and the air pipe is arranged at the other end of the air pump. The gas pipe is arranged on one side of the filter box, and the gas flow meter is arranged on the outer side of the gas pipe. The sewage treatment device has the beneficial effects that the effect of pneumatically stirring sewage is achieved by arranging the pneumatic motor, the effect of stirring and aerating the sewage is achieved by arranging the stirring piece, the aeration uniformity is improved, the effect of stirring sludge at the bottom of a sewage pool is achieved by arranging the driving piece, and the sewage treatment effect is improved. By arranging the filtering assembly, it is ensured that air entering the pneumatic motor is clean, and damage caused by impurities to equipment is avoided.

The utility model discloses an air compressor integrated system which comprises an air compressor main body, an air inlet is formed in one end of the air compressor main body, an air flow meter and a temperature and pressure sensor are arranged at the air inlet, an outlet of the air compressor main body communicates with an inlet of an intercooler, the intercooler is arranged above the air compressor main body, and the air flow meter and the temperature and pressure sensor are arranged on the air compressor main body. An outlet of the intercooler and the air inlet are located on the same side, and a temperature sensor is arranged in the intercooler. The intercooler, the flow meter, the temperature and pressure sensor and the air compressor are integrated into a whole, so that the space occupied by an air pipeline in a system is greatly reduced, and the complexity of a special-shaped rubber pipe is reduced.

The utility model relates to the technical field of engine control, in particular to an air flow meter signal delay compensation device for the transient air-fuel ratio of an engine. Comprising a data acquisition device which comprises sensors arranged in N sections of gas inlet pipes from the gas inlet front end of an engine to a gas inlet valve of the engine and is used for acquiring gas parameters in the multiple sections of gas inlet pipes; n is a positive integer; the delay calculation device is connected with the data acquisition device and obtains total delay time based on the gas parameters; and the delay chip is connected with the delay calculation device and controllably superposes the total delay time to the air flow meter, and the air flow meter outputs delayed flow meter signals. Gas parameters of the multiple sections of gas inlet pipes are collected through the sensors, the time of gas passing through each section of gas inlet pipe is calculated, the total delay time between the gas inlet front end of the engine and the gas inlet valve of the engine is obtained, the total delay time is considered in engine transient control to coordinate the advance, and the overshoot risk in the prior art is avoided.

A pressure difference detection device, for a particulate collection filter, includes an upstream pressure sensor, a downstream pressure sensor, an air flow meter, a low-pass filter, a processed differential pressure value acquiring unit, an intake air amount correcting unit, and an actual differential pressure value acquiring unit.

The invention belongs to the technical field of fuel cell engines. The air system comprises an air compressor, an intercooler, a humidifier, an electric pile outlet air stop valve, an electric pile inlet air stop valve, a humidifier bypass valve, a fuel cell air inlet bypass valve, a back pressure valve, an air flow meter, an intercooler rear pressure sensor, an electric pile inlet pressure sensor and an electric pile inlet temperature sensor. The stack outlet temperature sensor, the sensor assembly for the bench test, the mass spectrometer for the bench test, the air inlet pipeline and the air outlet pipeline are detachable parts, and the sensor assembly for the bench test and the mass spectrometer for the bench test are used for the bench test and are detached after the test is finished. According to the invention, the detachable sensor assembly and the mass spectrometer are additionally arranged in the air system, and interlocking optimization is carried out by combining a bench test control method and a performance calculation result, so that the accuracy of a bench test result is ensured, the battery pack is protected, the calibration method has very important significance in the calibration process of the fuel cell engine, and the cost is saved.

The invention relates to the technical field of prevention and removal of general cleaning or general dirt, in particular to a blockage clearing method for a pressure tap of an air flow meter, which is executed by a processor, connected with an electronic control system and used for executing a control command to be sent; the blowing element is connected with the control element and sends the control command to the control element to execute blowing; the monitoring system is connected with the distributed control system and at least monitors the electronic control system and the control elements; the feedback module is connected with the distributed control system and at least executes feedback of the electronic control system and the control elements. According to the invention, blockages at the pressure tapping of the air flow meter can be cleaned in time.

A mobile swimming pool water-free inspection device comprises a vacuum chamber with openings at both ends and gates for sealing the openings. The gates are located on one side of the openings and are electrically connected to a lifting member. The bottom of the vacuum chamber is provided with a plurality of sliding members and lifting members, the sliding members extending along the length of the chamber, with the lifting members interspersed between the sliding members. The inner top surface of the vacuum chamber is flat. The top of the vacuum chamber is provided with a plurality of inflation valves communicating with the hollow interior of the chamber, each of which is connected to an inflation device. Several air flow meters are installed within the vacuum chamber. The sliding and lifting members are used to transport the mobile swimming pool and adjust its height, and the air tightness of the mobile swimming pool is then tested by air input. Testing eliminates the need to fill the mobile swimming pool with water or flip it over, reducing the speed and difficulty of testing heavy mobile swimming pools.

The utility model relates to a detection system for a gas water heater, which comprises a gas passage communicated with a gas inlet of the gas water heater, and a gas proportional valve is arranged in the gas water heater; the compressed air channel is communicated with an air inlet of the gas water heater, the compressed air channel and the gas channel can be selectively opened, the compressed air channel is provided with a first pressure regulating valve and an air flow meter used for detecting simulated air flow, and the air flow meter is arranged on the downstream of the first pressure regulating valve; and the controller is electrically connected with the first pressure regulating valve, the air flow meter and the gas proportional valve. The method has the advantages that the heat load of the gas water heater can be determined without gas combustion in a manner of replacing gas with compressed air; in addition, the compressed air flow is converted into the gas flow, so that the opening degree of the gas proportional valve can be adjusted according to the converted gas flow, and the gas water heater can reach the determined heat load.

The utility model provides a maximum output judging and adjusting device for a medium-speed coal mill, and belongs to the field of coal mills. Comprising a current monitoring device, a pulverized coal fineness monitoring device, a differential pressure gauge, an air volume meter, a cold air control valve, a hot air control valve and a dynamic separator, the air volume meter, the cold air control valve and the hot air control valve are installed at an inlet of the coal mill, the pulverized coal fineness monitoring device is installed at an outlet of the coal mill, and the differential pressure gauge is used for measuring the pressure difference between the inlet and the outlet of the coal mill; comprising a hydraulic oil station and a loading force proportional overflow valve, the output end of the hydraulic oil station is connected to the input end of the loading force proportional overflow valve, and the output end of the loading force proportional overflow valve is connected to the coal mill. According to the utility model, monitoring data can be acquired in real time through the current monitoring device, the pulverized coal fineness monitoring device and the differential pressure gauge and whether the coal mill reaches a preset upper limit is judged so as to ensure the operation safety of the coal mill, and the maximum output of the coal mill can be adjusted in real time by adjusting the loading force proportional overflow valve, the dynamic separator and the hot air control valve.

The invention provides a surrounding rock drying experiment system and method for simulating underground cavern ventilation, the experiment system comprises an environment test box, a fan, a heating device, at least two temperature and humidity sensors and an air flow meter are arranged at the top of the environment test box, and at least two humidity and temperature instruments are arranged at the bottom of the environment test box. At least four digital balances are arranged in the environmental test box, a first sample, a second sample, a third sample and water are respectively arranged on the digital balances, four thermocouples at equal intervals are arranged in the first sample, a thermometer is arranged on the first sample, and a thermocouple is arranged on the surface of the water; the fan, the heating device, the temperature and humidity sensor, the air flow meter, the humidity and temperature instrument, the digital balance, the thermocouple and the thermometer are in signal connection with the upper computer. According to the invention, the drying process of surrounding rock under the ventilation condition of the underground cavern can be simulated, including real-time observation of water saturation, temperature change and the like, and a new thought is provided for research of sealing performance (air leakage) and stability of the compressed air energy storage cavern.

The application discloses a kind of automobile air flow meter devices, it is related to the technical field of measuring device, including: flowmeter main body, for detecting the air flow in air pipe inside;Communication component is connected with the flowmeter main body, for cutting off or restoring the flow channel of pipeline medium by its rotation;Limiting component is located above communication component, for limiting and fixing flowmeter main body;Specifically, maintenance personnel only need to rotate knob, can make rotary seat rotate, realize the misplacement of the channel of communication pipe two ends and the docking plate connecting port, effectively prevent external dust and impurities from entering air intake system, this operation simultaneously drives positioning rod to move, by loosening locating bolt, the limiting hole in the inside of rotating disc can be rotated and aligned with flowmeter, flowmeter main body is ejected from docking interface under the action of spring, and maintenance personnel can easily take out flowmeter main body to replace or maintain.

Accurately determine the lifespan of the filter. [Solution] The fuel cell system 20 is equipped with an air flow meter 31 that detects the flow rate of air that has passed through the air cleaner 23 and before it is drawn into the air compressor 22. The fuel cell system 20 is equipped with a higher-level ECU 33. The higher-level ECU 33 functions as an integrated value calculation unit that calculates the integrated value of the air flow rate detected by the air flow meter 31, a collected dust amount calculation unit that calculates the amount of dust collected by the filter 29 by multiplying the calculated integrated value by a dust concentration preset based on the operating environment, and a notification unit that notifies when the calculated collected dust amount exceeds a collection allowance which is a preset threshold.

The application discloses a fuel cell system and a self-cleaning control method thereof, and belongs to the technical field of fuel cell systems. The system comprises an air filter, an air flow meter, an air compressor, a middle cooler, an air stop valve, an air bypass valve, a humidifier, a temperature-humidity-pressure integrated sensor, a back pressure valve, an air path-to-cooling path electric valve, a cooling path-to-air path electric valve, an inlet hydrogen electromagnetic valve, a hydrogen supply module, a hydrogen pressure sensor, a water distributor, a hydrogen circulation pump, an anode hydrogen discharge valve, an anode water discharge valve, a hydrogen path-to-cooling path electromagnetic valve, a cooling path-to-hydrogen path electromagnetic valve, a cooling path outlet temperature-pressure integrated sensor, a cooling path water pump, an electric three-way valve, a deionizer, a PTC heater, a cooling path inlet temperature-pressure integrated sensor, a water discharge valve, a radiator module, a water supplement tank, a tail exhaust pipe, a stack, an external water storage tank and a water supplement pump. The application can realize self-cleaning control of the fuel cell system, prolong the service life and improve the maintenance convenience.

This air flow rate meter comprises an enclosure having an auxiliary passage and a circuit chamber, and a flow rate detection sensor. The flow rate detection sensor has a diaphragm in which a flow rate detection unit is formed on a main surface, a recessed section formed on the reverse-surface side of the diaphragm, and a package part having a first package section and a second package section, the first package section being positioned in the auxiliary passage, and the second package section being positioned in the circuit chamber. An airflow passage linked to the recessed section is formed in the interior of the package part. The recessed section communicates with the auxiliary passage via a plurality of ventilation pathways that communicate with the auxiliary passage via the airflow passage.

The present invention relates to a design method for a water heat storage compressed air energy storage system, comprising: S1, obtaining the air flow of the compressor; S2, calculating the total power consumption of the compressor; S3, setting the end difference of the heat exchanger on the compressor side; and calculating the flow of a heat storage medium based on the end difference of the heat exchanger on the compressor side; S4, setting the air flow of the expander; S5, setting the end difference of the heat exchanger on the expander side; and calculating the flow of a heat release medium based on the end difference of the heat exchanger on the expander side; S6, calculating the total output of the expander based on the air flow of the expander; and S7, judging whether a state of equilibrium is in effect based on the air flow of the compressor, the air flow of the expander, the flow of the heat storage medium, and the flow of the heat release medium; if an unbalanced state is in effect, returning to step S5 and resetting the end difference of the heat exchanger on the expander side.

To provide a spray device for a spray material, which is excellent in spray efficiency.SOLUTION: A spray device 1 for a spray device comprises: pressurized containers 3A, 3B to which the spray material is supplied; air ducts 2A, 2B for injecting pressurized air into the pressurized containers 3A, 3B; and first and second transportation paths 8A, 8B for transporting the spray material discharged from the pressurized containers 3A, 3B. The first and second transportation paths 8A, 8B are individually provided in the pressurized container 3B. The first and second transportation paths 8A, 8B individually have an airflow meter and airflow adjustment means. The spray device for the spray material is configured to compare a measured value of the airflow meter provided on the first transportation path 8A and a measured value of the airflow meter provided on the second transportation path 8B, and reduce a difference between both values by the airflow adjustment means when the difference between both values is equal to or greater than a predetermined value.SELECTED DRAWING: Figure 1

The invention discloses a micro-nano bubble generating system which is composed of a water pumping system, a control system and a 304 stainless steel shell. The top of the device is provided with a power interface with a power adjusting function and a gas flow adjusting interface, and the side edge is provided with a fixing nut to suppress operation vibration. A water suction port is formed in the left side of the water pump, the right side of the water pump is connected with a nano bubble discharge port, an upper air pipe is connected through an air flow meter, and micro-nano bubble water is generated through water-air mixing. The shell adopts a hollowed-out grid design and has the functions of liquid flow control and impurity filtering, and a portable pull ring is arranged at the top so that the immersion depth can be adjusted conveniently. And by cooperatively adjusting the power and the air inflow, the bubble generation rate can be accurately controlled, and the energy consumption is reduced while the efficiency is improved. The structure effectively solves the problem that traditional equipment is easy to loosen and block, the service life of the equipment is obviously prolonged, and the equipment is suitable for operation in water environments with different depths.