73results about How to "Low maintenance" patented technology

The utility model belongs to the field of chemical safety management, and discloses an alarm device for chemical safety management, which comprises a main body assembly for detection and alarm, and further comprises a base assembly for being fixedly connected with a wall, and a box shell assembly for supporting, fixing and protecting the interior is magnetically mounted on the base assembly. The main body assembly is mounted at the end of the box shell assembly; the base assembly comprises a bottom plate, a limiting connecting mechanism is arranged on the bottom face of the bottom plate, two magnets are symmetrically installed on the bottom face of the limiting connecting mechanism, and an electric connecting mechanism used for elastically compressing a communication circuit is installed in the middle of the bottom plate. The box shell assembly comprises a box shell body, a plug-in mechanism is arranged on the top face of the box shell body, and two iron sheets and two fixed electrodes are symmetrically arranged on the plug-in mechanism. According to the alarm device for chemical safety management, the magnet of the base assembly is in magnetic attraction fit with the iron sheet of the box shell assembly, and the guide structures of the limiting boss and the positioning column are matched, so that one-button type fixing and dismounting of the box shell are achieved.

This utility model discloses an adjustable and replaceable device for reducing vibration of rotating equipment in marine environments, comprising: an outer pipe, a main shaft, and a bearing bracket. The outer pipe is coaxially arranged with the main shaft, and the bearing bracket is sleeved on the outside of the main shaft. An annular groove is provided on the inner wall of the outer pipe at a position corresponding to that of the bearing bracket. A positioning ring is detachably installed in the annular groove. An outer ring is provided on the outer edge of the bearing bracket, and the outer ring cooperates with the positioning ring. The positioning ring reduces the fitting gap, improves the overall stability of the bearing bracket and the outer pipe, and thus enhances the stability of the bearing and pump unit. It can reduce the vibration amplitude of the rotating equipment and improve the long-term safe and stable operation capability of the rotating equipment in marine environments. The addition of the 316L positioning ring simplifies on-site construction, and the positioning ring can be adjusted and replaced in a timely manner according to the subsequent vibration of the rotating equipment.

This utility model relates to a high-efficiency graphite absorption tower in the field of graphite towers, including a tower body and a base for fixing the tower body. Multiple sieve plates are fixed sequentially from top to bottom inside the tower body. A rotating rod is rotatably installed inside the tower body, and a cleaning mechanism is rotatably connected to the circumference of the rotating rod via a connecting seat. The cleaning mechanism is used to clean the deposits on the sieve plates. The cleaning mechanism is also elastically connected to the connecting seat via an elastic structure. In its normal state, the cleaning mechanism fits against the circumference of the rotating rod. When subjected to centrifugal force, the cleaning mechanism overcomes the elastic force of the elastic structure and unfolds. A suction pump is fixed inside the base, and a follower is fixedly sleeved at the lower end of the rotating rod. By adopting the above-mentioned elastic structure and follower, the overall cost of the equipment is reduced, while still achieving the purpose of cleaning the deposits on the sieve plates. This improves the absorption efficiency of the graphite tower while reducing the subsequent maintenance frequency and costs, achieving the goals of cost reduction, efficiency improvement, and energy saving.

The application discloses a rotary inclined plate sedimentation tank and relates to the field of sewage treatment equipment. The rotary inclined plate sedimentation tank comprises a sedimentation tank body, a water inlet structure, a rotary inclined plate structure, a sludge collecting hopper and a water outlet structure. The inclined plate structure adopts a rotatable inclined plate device. The rotatable inclined plate device can rotate periodically due to the rotating force generated by the screw propeller at the end of the rotary inclined plate in the process of water flow and the rotating force generated by the uneven gravity distribution of sludge on the rotary inclined plate. Therefore, the sludge can be smoothly settled without being limited by the inclination angle, the sedimentation efficiency is improved, and the traditional sludge blockage phenomenon of the inclined plate is avoided.

The present application relates to the field of coking, synthetic ammonia and the like containing ammonia wastewater treatment, and discloses a novel ammonia evaporation energy-saving process system, a primary ammonia evaporation tower, an intermediate pressurizing pump set, a water flow regulating device, a secondary ammonia evaporation device, a flash tank, a steam ejector, a pressurizing pump set and a control unit. After the ammonia-containing wastewater is preliminarily treated by the primary ammonia evaporation tower, it is delivered to the secondary ammonia evaporation device by the pressurizing pump, and introduced into new steam for secondary ammonia evaporation. After the secondary ammonia evaporation, the wastewater flows into the flash tank to produce flash steam by cooling and pressure reduction, and the flash steam is pressurized by mixing with the new steam through the steam ejector, and then returns to the primary ammonia evaporation tower or the secondary ammonia evaporation device, so that the steam is recycled multiple times. The system can effectively reduce the new steam consumption by 35-45% under the premise of ensuring the stability of the ammonia nitrogen index of the effluent, improve the energy utilization rate, reduce carbon emissions, and is suitable for direct ammonia evaporation and indirect ammonia evaporation systems.

The embodiment of the application relates to the technical field of vehicles, and discloses a vehicle door assembly and a vehicle, the vehicle door assembly comprising a vehicle door outer plate, a vehicle door inner plate and a plurality of energy-absorbing devices, the vehicle door inner plate being located on the inner side of the vehicle door outer plate; the plurality of energy-absorbing devices being arranged at intervals between the vehicle door outer plate and the vehicle door inner plate, each energy-absorbing device comprising an energy-absorbing piece and a crash plate, the energy-absorbing piece being connected to the vehicle door inner plate, and the crash plate being located on the side of the energy-absorbing piece close to the vehicle door outer plate, the energy-absorbing piece being used for energy absorption and buffering when the vehicle door outer plate is subjected to a collision. The vehicle door assembly provided by the embodiment of the application is provided with a plurality of energy-absorbing devices between the vehicle door outer plate and the vehicle door inner plate, each energy-absorbing device comprising an energy-absorbing piece and a crash plate, the energy-absorbing piece being used for energy absorption and buffering when the vehicle door outer plate is subjected to a collision, so that the probability of damage to the crash plate, the vehicle door inner plate and related vehicle door accessories is reduced, and only the vehicle door outer plate needs to be repaired or replaced, thereby reducing the maintenance cost of an accident vehicle.

The utility model discloses a kind of paper skin conveying stack position of lifting and rotating, belong to paper product packaging and logistics conveying technical field.The device includes rack, lifting frame, rotating frame, conveying mechanism and drive system.Lifting frame is movably arranged on rack;Rotating frame is rotatably arranged on lifting frame;Conveying mechanism is installed on rotating frame, for carrying and conveying paper skin;Drive system is used to drive lifting frame lifting and rotating frame rotation. Among them, drive system includes the first linear cylinder for driving rotating frame 90 degrees horizontal rotation, and the second linear cylinder for driving lifting frame vertical lifting;Conveying mechanism includes chain conveyor and the conveying motor of driving its forward and reverse operation.The utility model highly integrates conveying, lifting, rotating function, compact structure, solve the problem that existing equipment function is single, layout is long, with the advantages of running smoothly, high efficiency, strong adaptability.

This application discloses a machine tool structure with a combined machining head. The application includes: a first base and a second base, the first base having a working area for placing the workpiece to be processed; a column, on which a first X-axis linear module is mounted; a first group of electrical discharge machining (EDM) heads, comprising at least four heads mounted on the first base and respectively connected to the first X-axis linear module, each of the four heads having an independent Y-axis linear module and a Z-axis linear module; and a second group of EDM heads, comprising at least one head mounted on the first base, the second base having a second X-axis linear module, the at least one head connected to the second X-axis linear module, the at least one head having an independent Y-axis linear module and a Z-axis linear module, and all four heads connected to an EDM power supply.

The utility model discloses an automatic sludge detection and pollution discharge device for a water seal tank of a converter purification system, and relates to the field of pollution discharge devices for steelmaking metallurgical equipment.The automatic sludge detection and pollution discharge device comprises a water seal tank assembly, two supporting rods are fixedly connected to the bottom of the water seal tank assembly, and a discharging assembly is arranged at the bottom of the water seal tank assembly; a tight assembly is arranged on one side of the water seal tank assembly; the water seal tank assembly comprises a water seal tank cavity box, a discharging through hopper is arranged at the bottom end of the water seal tank cavity box, a tank cover is connected to the top of the water seal tank cavity box in a clamped mode, a pneumatic adjusting valve is arranged on the top of the tank cover, an intelligent controller is arranged on one side of the water seal tank cavity box, and an ultrasonic mud level meter is arranged in the water seal tank cavity box. The interior of the water-sealed tank cavity box is rotationally connected with a crushing blade assembly; according to the arrangement, sludge detection and treatment effects are added on the water seal tank, and the main purposes of solving sludge accumulation of the device, preventing the whole device from being blocked, avoiding influence on normal work of the device and improving the working efficiency of the device are achieved.

The present invention relates to a method for rapidly and efficiently extracting a plant essential oil from a plant raw material, particularly from xylem of a pine tree, thereby maximizing the yield, reducing the manufacturing cost and time, improving the productivity, performing high-purity treatment on the extracted plant essential oil by a refining process, thereby realizing the diversification and commercialization of the extracted oil, and improving the quality of the plant essential oil. The invention relates to a plant essential oil extraction method and plant essential oil extracted oil extracted by the extraction method.

The utility model relates to the technical field of seals, and provides an ink box and a rotary printer. The utility model provides an ink box which comprises an outer shell, an ink storage mechanism and a printing nozzle. The printing nozzle has a printing position and a dismounting position; the outer shell is connected with the printing nozzle, so that the printing nozzle can be switched between a printing position and a dismounting position; the printing nozzle is provided with an ink inlet hole; the ink storage mechanism is detachably arranged on the outer shell and provided with an ink storage cavity and an ink outlet hole capable of being communicated with the ink storage cavity. When the printing nozzle is located at the printing position, the ink outlet hole is communicated with the ink inlet hole; when the printing nozzle is located at the dismounting position, the ink outlet hole and the ink inlet hole are disconnected, and the ink storage mechanism can be dismounted from the outer shell. The technical problem of high ink box replacement cost caused by the fact that the ink storage mechanism cannot be replaced independently in the prior art is solved.

The utility model provides a kind of automatic descaling device for pipeline, at least includes: descaling agent tank, liquid-adding metering pump, dilution flushing tank, flushing circulating pump and control system;The descaling agent tank is used to store descaling agent stock solution, with stock solution filling port and stock solution discharge port;The liquid-adding metering pump is set to the stock solution discharge port, and descaling agent stock solution is transported to downstream by pipeline;The dilution flushing tank has the first inlet connected with water source by electric stop valve, the second inlet connected with the liquid-adding metering pump outlet, and dilution liquid outlet;One end of the flushing circulating pump is connected with the dilution liquid outlet by pipeline, and the other end is used to be connected with the pipeline to be cleaned;The control system controls the liquid-adding metering pump and the electric stop valve to open, and water and descaling agent stock solution are mixed to form descaling agent dilution after entering the dilution flushing tank, and then the flushing circulating pump is controlled to open, and the pipeline to be flushed is flushed and descaled using descaling agent dilution.

The utility model discloses a laser pipe cutting machine multi-pipe-diameter supporting device which comprises a bed body, guide rails are arranged on the two sides of the bed body, sliding installation blocks are arranged on the guide rails, a fixing base is arranged in the centers of the sliding installation blocks, a hydraulic telescopic column is arranged in the center of the fixing base, a fixing block is arranged at the top end of the hydraulic telescopic column, and a semicircular groove is longitudinally formed in the fixing block. A plurality of mounting grooves are formed in the fixing block in the longitudinal direction, supporting blocks are arranged in the mounting grooves, grooves with the same radian as the semicircular grooves are formed in the supporting blocks, arc-shaped grooves are formed in the bottoms of the grooves, sliding grooves are formed in the inner sides of the supporting blocks at the positions of the grooves on the two sides of the arc-shaped grooves, and sliding blocks are arranged in the sliding grooves. The variable-diameter supporting device has the advantages that the structural design is simplified, the equipment cost and the maintenance requirement are reduced, various-diameter supporting can be carried out, the economical and practical characteristics are achieved, effective supporting is provided through sliding block fixing and cambered surface supporting, and the same supporting effect of the variable-diameter supporting device is achieved through the structure when necessary.

The application relates to a cigarette packet extracting device and method. The cigarette packet extracting device comprises a first mounting bracket, a driving mechanism, a crank, a connecting rod and an executing mechanism. The first mounting bracket is used for mounting on the rack of a cigarette packet extracting conveying belt. The driving mechanism is mounted on the first mounting bracket. The driving mechanism is in driving connection with the crank, and the connecting rod is in driving connection with the crank. The executing mechanism comprises a hook hand which is in driving connection with the connecting rod so that the driving mechanism drives the hook hand to reciprocate through the crank and the connecting rod. The cigarette packet extracting device and method have the advantages of high stability, long service life and high machining precision.

The utility model provides a human foot sole contact mechanical testing device which comprises a base (1), a step ladder (2) distributed on two sides of the base (1), a group of movable lifting racks (3) arranged on the base (1), pressure sensing assemblies (4) arranged on the lifting racks (3), and motion capture assemblies (5) arranged on the outer side of each lifting rack (3). One side of one step ladder (2) is provided with a computer (6) which is in electric signal data connection fit with the pressure sensing assembly (4) and the action capturing assembly (5). The device has the advantages of being simple in structure, convenient to use, low in manufacturing cost and low in later maintenance cost, meanwhile, various test requirements can be met, and daily, convenient and flexible testing can be achieved.

The invention discloses a pressure measuring and controlling endoscope, a matched accessory and a pressure controlling method, and belongs to the technical field of medical instruments. The pressure regulating valve assembly is arranged on the endoscope main body and is used for regulating the sectional area of the fluid channel; the head end sensor is arranged at the head end of the endoscope main body and is used for detecting the pressure of a target part; the infusion tube is arranged on the endoscope main body and is used for connecting an external pipeline; the main control chip is electrically connected with the pressure regulating valve assembly and the head end sensor and used for controlling the working state of the pressure regulating valve assembly according to a detection signal of the head end sensor; pressure is detected in real time through the head end sensor and fed back to the main control chip, and the main control chip drives the pressure adjusting valve element to move so as to adjust the sectional area of the fluid channel. The pressure adjusting function is directly built in the endoscope body, and automatic closed-loop control over intracavity pressure can be achieved without depending on external special equipment.

The application discloses an ash hopper and an ash cleaning method. The ash hopper comprises an ash hopper body, an ultrasonic oscillator, a sensor assembly and a controller. The ultrasonic oscillator is arranged on the ash hopper body. The sensor assembly is used to acquire parameters representing the state of accumulated ash in the ash hopper, and the parameters at least include real-time flue gas temperature in the ash hopper body and actual accumulated ash thickness of the inner side wall of the ash hopper body. The controller generates an actual temperature deviation value according to the real-time flue gas temperature and a preset flue gas temperature. When the absolute value of the actual temperature deviation value is greater than a preset temperature deviation value, or the actual accumulated ash thickness is greater than a preset accumulated ash thickness, a start instruction is generated and executed to control the ultrasonic oscillator to start. The application can timely destroy the bonding structure between fly ash particles by arranging the ultrasonic oscillator and combining real-time monitoring data, thereby reducing the cleaning difficulty and labor intensity.

A wear-resistant agitator blade for mixing phosphate rock slurry includes a blade body with a wear-resistant layer laser-clad on the flow-facing edge. The outer arc edge of the wear-resistant layer is beveled, and the wear-resistant layer thickness is 3-5 mm. This invention achieves an optimal balance between cost and performance through the wear-resistant design of the flow-facing edge, significantly extending the service life of the agitator blade in high-solids-content media, and substantially reducing equipment maintenance frequency and related costs. It demonstrates significant technological advancement and social and economic benefits.

This invention relates to a seedling-collecting mechanism and a dual-purpose rice and rapeseed transplanter, aiming to solve the problem that existing transplanting equipment's seedling-collecting mechanisms cannot simultaneously meet the seedling-collecting needs of both rice and rapeseed's mat-like seedlings. The transplanter includes a frame, a seedling box, a planting device, and a seedling-collecting mechanism. The seedling-collecting mechanism includes a rotary arm assembly, a planting arm, and seedling-collecting claws. The rotary arm assembly is mounted on the frame, and the planting arm is fixed to the rotary arm assembly. The seedling-collecting claws are detachably connected to the planting arm. The seedling-collecting claws include rice-specific claws and rapeseed-specific claws, which can be interchanged depending on the target crop. This invention achieves dual-purpose functionality through the rapid replacement of the seedling-collecting claws in the seedling-collecting mechanism, improving the transplanter's versatility and economy, and reducing the user's equipment investment costs.

The application belongs to the technical field of offshore wind power generation, and discloses a floating wind turbine mooring positioning method, a mooring positioning system and electronic equipment. The floating wind turbine mooring positioning method obtains the measurement data of wind speed and wind direction and the position information of wind turbine layout, then constructs a mooring system model of the wind turbine to obtain the maximum length and the minimum length of the mooring line; then the genetic algorithm is used to iteratively process multiple design parameters while keeping other parameters unchanged to obtain the optimized position coordinates of the wind turbine, thereby creating a mooring system design database, and according to the established wake model of the floating offshore wind farm, the power generation capacity of each wind turbine and the position information of the layout are calculated according to the offset of the position of each wind turbine until the position information of the layout with the minimum wake loss of the floating offshore wind farm and the maximum power generation capacity of the wind farm is found, which is beneficial to improve the output power of the wind farm and reduce the fatigue load of the wind turbine.

This invention discloses a collaborative scheduling system and method for driving and charging of connected heavy-duty vehicle clusters, relating to the technical field of intelligent management. The system includes the following steps: calculating the driving conversion coefficient and charging conversion coefficient of the vehicle cluster; calculating the vehicle cluster's transport capacity and transport efficiency; establishing a first mapping relationship and a second mapping relationship to obtain discrete transport capacity and discrete transport efficiency; matching collaborative vehicles; verifying the collaborative vehicles; and executing a first operation. This invention, by calculating the driving conversion coefficient and charging conversion coefficient of the vehicle cluster, more accurately predicts and plans the driving and charging needs of vehicles. Based on historical freight data and real-time order information, it allocates vehicle resources more rationally. Through collaborative scheduling, it reduces fuel consumption and electricity costs, reduces vehicle wear and maintenance costs, improves the response capability to emergencies by establishing mapping relationships and discretization analysis, and reduces idle time and improves vehicle utilization efficiency through intelligent scheduling.

This invention belongs to the field of petrochemical technology and discloses a system and method for separating and preparing high-purity propane and high-purity propylene. The system mainly utilizes a pre-reactor, storage tank, catalytic distillation column, catalytic cracking distillation column, and heat exchanger. Propylene first undergoes an etherification reaction in the pre-reactor, and then the remaining propylene undergoes an etherification reaction in the catalytic distillation column, with high-purity propane obtained from the top of the column. The bottom material enters the catalytic cracking distillation column for catalytic cracking, with high-purity propylene obtained from the top of the column. This invention can obtain propane products with a content ≥99.9% and propylene products with a content ≥99.9%, and can also co-produce the fine chemical methyl isopropyl ether. This invention combines reactive distillation and catalytic cracking distillation processes, resulting in high propylene and propane yields, strong adaptability to raw materials, and the ability to handle mixtures with a wide range of propane and propylene contents. This method requires fewer distillation column trays, has low equipment investment, and is simple to operate.

The utility model discloses an auxiliary device suitable for heavy-load hard rail transmission, which comprises a bottom rolling body and side rolling bodies, the bottom rolling body is fixedly arranged on a plastic pasting surface, and the side rolling bodies are fixedly arranged on two side surfaces of a hard rail contact surface; the bottom rolling body is fixedly mounted on a rolling body mounting plate, and a mounting plate gasket is arranged at the bottom of the rolling body mounting plate; the side face rolling body is fixedly installed on the rolling body side brake iron, and the rolling body side brake iron is fixedly installed on the brake iron base. The auxiliary device is of a hard rail auxiliary transmission structure combining the rolling body and the plastic pasting face, the linear precision in the high-speed operation process can be improved, the heating value of the plastic pasting face is effectively reduced, the maintenance requirement of a traditional hard rail is lowered, the service life of the plastic pasting face of the hard rail is prolonged, and the problem of the creeping phenomenon in the low-speed operation process is solved.

Embodiments of the present invention provide a transfer module and a substrate processing apparatus including the same. The transfer module includes: a housing; a first transfer section for transferring a substrate and rotatably connected to the housing in a first rotational direction; a second transfer section for transferring a storage container containing the substrate, arranged vertically spaced from the first transfer section and rotatably connected to the housing in a direction different from the first rotational direction; a drive section connected to the first transfer section via a connecting member to provide power for rotating the first transfer section; and a transmission unit connecting the first transfer section and the second transfer section and transmitting the power to the second transfer section.

The utility model discloses a handheld photovoltaic panel brush production brush hair assembly equipment, including main part, install the locating plate on the main part, be provided with the fixed plate on the main part, install the ventilation module on the fixed plate, be provided with the air -blast mouth on the ventilation module, install the gas stem above the air -blast mouth, install the connecting flange on the gas stem, install the accurate positioning plate above the connecting flan, install the guide plate above the accurate positioning plate. This brush hair assembly equipment, compact, small, ventilation module stable energy supply, pneumatic transmission is stable. The accurate positioning plate and guide plate cooperate and position the brush hair, and the automatic up and down movement simplifies the operation and reduces the intensity, and the compatibility is strong. It can improve the quality and effect, reduce the cost, help enterprises to increase efficiency and reduce cost, promote the upgrading of photovoltaic cleaning equipment technology and the development of industry.

The application provides a hydrogen catalytic combustion process for co-production of water vapor and nitrogen. The application also provides a hydrogen catalytic combustion device for co-production of water vapor and nitrogen. The hydrogen catalytic combustion process and device provided by the application have the advantages of simple process, high energy efficiency, co-production of water vapor and nitrogen, low device investment, high automation degree, low operation cost, high safety and the like compared with traditional multi-stage hydrogen catalytic combustion process and device, and are particularly suitable for popularization and application in industrial scenes with hydrogen source, water vapor and nitrogen, and have good economic and social benefits.

The utility model relates to an equal-strength steel truss reinforcing structure of a structural damage PC box girder, and belongs to the technical field of building structure reinforcing. Comprising a steel truss with the same strength as a PC box girder, and the steel truss is of a cuboid space steel truss structure; a plane truss is arranged on the face, opposite to the steel truss, of the web plate, and the plane truss and the steel truss are fixed to the two sides of the web plate through opposite-pull screws. The steel truss is located on the inner side or the outer side of the web. Anchor bolts and steel gaskets are further arranged on the opposite-pull screws to reinforce and fix the steel trusses and the plane trusses and anchor the opposite-pull screws. And the opposite-pull screws are arranged at the joints of the chord members in the steel truss. A steel-concrete transition connecting section is arranged at the end part of the steel truss and is fixed through an opposite-pull screw rod; and the number of the opposite-pull screws on the transition connecting section is determined according to the tensile force borne by the steel truss chord member and the tensile force which can be borne by a single opposite-pull screw. The equal-strength steel trusses are arranged on the box girder in the damaged area, and meanwhile small original structure damage and a strong reinforcing effect are guaranteed.

The utility model relates to the technical field of injection molding process especially is used to a front mould oblique position structure for injection mould, including the front mould fixed plate, the water gap board, the backing plate, the front mould frame and the front mould kernel that set up in proper order, still include the front mould insert piece and the row position guide pillar, the front mould insert piece is worn and is set in the front mould kernel, and under the guidance of the mould kernel inclined plane of front mould kernel, oblique inserts injection molding cavity, thereby injection molding forms the oblique recess of plastic part, the one end of row position guide pillar is fixedly connected in the water gap board, its other end passes through the backing plate and the front mould frame, and with the front mould insert piece forms the lock joint of movable, makes row position guide pillar drive front mould insert piece and exits from the oblique recess. Above all, the utility model through the lock joint and water gap board linkage drive of ingenuity, has simplified the mould structure significantly, has improved injection molding efficiency, has guaranteed the plastic part forming quality. Its modular design and high performance price ratio make it easy to manufacture, maintain and market promotion.

This invention relates to the field of wind turbine technology and discloses a maintenance method and device for axial flow fans. The method includes: adjusting the wind turbine to a shutdown maintenance state and removing the pre-installed cover plate for the axial flow fan mounting port; confirming the rotation direction and wind direction of the axial flow fan rotor and fixing shock-absorbing rings on both sides of the axial flow fan; fixing the axial flow fan with the shock-absorbing rings to the pre-installed axial flow fan mounting port; electrically connecting the axial flow fan and checking whether the axial flow fan can operate normally; after confirming that the axial flow fan can operate normally, importing the control program to control the start and stop of the axial flow fan. This invention enables the fan assembly to remain in an appropriate position, thereby improving the on-site maintainability of the axial flow fan. It can improve the utilization rate of motor cooling air, significantly enhance the cooling effect, extend the service life of the motor, save motor maintenance costs, ensure continuous, stable, and safe production, and reduce production costs.