276results about How to "Ensure continuous and efficient operation" patented technology

The invention discloses an intelligent production scheduling method and device for the equipment manufacturing industry, and relates to the technical field of production scheduling, and the method comprises the steps: building an equipment file information library, and recording the information of active equipment and standby equipment of a target production line; and constructing an equipment topology network according to the equipment file information base and the process information of the production line. Configuring a lightweight prediction model for each edge equipment node, and performing equipment health state analysis and short-term maintenance demand prediction in combination with real-time equipment operation data to obtain a preliminary evaluation state; and performing evaluation state correction through data sharing of edge equipment nodes to obtain a final evaluation result of the equipment. And according to an evaluation result and an equipment archive library, generating an equipment scheduling and maintenance decision, and realizing intelligent production scheduling. The technical problem that equipment maintenance and production scheduling are lack of flexibility and predictability in the prior art is solved, and the technical effects of improving the equipment utilization rate, optimizing production scheduling and ensuring efficient operation of a production line are achieved.

The invention discloses a method, a system, a medium and equipment for evaluating the running state of a main ventilator, relates to the technical field of safety engineering, and aims to select important parameters from monitoring parameters of a mining main ventilator to construct a running state evaluation index system and divide the running state of the main ventilator. The initial weight of the index is determined through a combined weighting method, the weight of the degradation index is improved by introducing a variable weight theory, and the identification capability of the model on the degradation state is enhanced. A cloud model is adopted to calculate the membership degree of the index parameters to the operation state grade, and the operation state of the main ventilator is determined according to the evaluation criterion of the worst grade item with the membership degree larger than 0.1. Verification is carried out by using data before the main ventilator breaks down, and the result shows that the model can evaluate the degradation state of the ventilator in time.

The invention discloses a water quality monitoring device for environmental engineering, which comprises a monitoring box, a U-shaped frame, a power-driven roller, a rope, a fixed cylinder, a filter barrel, a water pumping hose and the like, the U-shaped frame is arranged at the bottom of the inner wall of the monitoring box, the roller is driven by a power mechanism, the bottom end of the rope is connected with the filter barrel, and the bottom end of the filter barrel is connected with the water pumping hose. The auxiliary mechanism controls the roller through a locking rod and a ratchet wheel, so that stable sedimentation of the filter barrel is ensured; the monitoring mechanism monitors water quality parameters by using a piston barrel and a detection probe; the cleaning mechanism automatically clears impurities on the surface of the filter vat to keep monitoring efficiency; the water quality monitoring device is ingenious in design, high in automation degree and easy and convenient to operate, the water quality monitoring efficiency and accuracy are effectively improved, the maintenance cost is reduced, and the water quality monitoring device is suitable for water quality monitoring of various water environments such as rivers, lakes and seas.

The invention relates to the technical field of communication networks, and discloses a communication transmission optimization method and system based on artificial intelligence, and the method comprises the following steps: S1, deploying a computing environment on a cloud server and a network edge node; s2, a sensor is installed at a network key node, and data acquisition is carried out through the Internet of Things technology; s3, performing real-time preprocessing and feature engineering on the acquired data; s4, an appropriate machine learning model is selected according to the task type, and training is carried out on the cloud; s5, deploying and operating the trained model at network edge nodes to perform real-time optimization; s6, realizing global optimization of communication transmission through cross-layer information coordination and decision; and S7, carrying out continuous monitoring and model adjustment on the system. Through cross-layer collaborative optimization, lightweight model deployment and real-time adaptive adjustment, and enhanced data encryption and access control measures, the overall performance, resource utilization efficiency and overall security of a communication network are significantly improved.

The invention relates to the technical field of pyrolysis gas treatment, in particular to a biomass pyrolysis gas self-heating reforming hydrogen production system which comprises a pyrolysis gas reforming hydrogen production subsystem and a thermochemical self-heating subsystem. Wherein the pyrolysis gas reforming hydrogen production subsystem can realize reforming quality improvement of pyrolysis gas to obtain high-purity hydrogen. On one hand, the thermochemical self-heating subsystem provides energy for the reforming hydrogen production reaction through an exothermic reaction of calcium oxide and carbon dioxide, and continuous and efficient operation of the reforming hydrogen production reaction is achieved; on the other hand, primary separation and quality improvement of the reformed gas can be realized, and the energy of the pyrolysis gas which is difficult to store and transport and has low utilization value is stored in calcium oxide. Through organic coupling of biomass pyrolysis gas reforming hydrogen production and thermochemical heat storage, self-heat-supply upgrading utilization of biomass pyrolysis gas and low-cost preparation of green hydrogen are achieved, and the device has the advantages of being high in energy utilization rate, high in treatment efficiency, convenient to operate and control, high in applicability and the like.

The invention relates to the technical field of sewage treatment, in particular to an intelligent operation management method and system for a water plant ultrafiltration membrane pool and a storage medium. The method comprises the steps that membrane pool operation parameters are obtained, multiple regression analysis is conducted on the membrane pool operation parameters, and transmembrane pressure differences corresponding to the membrane pool operation parameters are determined; the operating parameters of the membrane tank comprise inlet water quality, outlet water quality, water temperature and filtering pressure; when the transmembrane pressure difference is higher than the preset standard pressure difference, whether the current moment is in a preset emptying period or not is judged; if yes, carrying out cleaning operation based on the membrane pool operation parameters; and if not, obtaining a transmembrane pressure difference increase value in the first preset time period, and determining a coping intervention type based on the transmembrane pressure difference increase value, the coping intervention type including preventive intervention and immediate intervention. According to the invention, the balance between the cleaning and maintenance of the ultrafiltration membrane is conveniently improved, so that the continuous, efficient and stable operation of the water treatment process is ensured.

The invention relates to the field of agricultural machinery, and discloses a rice threshing device with a drying function, comprising: a crushing assembly used for preliminarily separating harvested rice so as to provide convenience for subsequent threshing operation; the extrusion assembly can automatically turn over rice to be threshed, and the double-face threshing function is achieved; the crushing assembly is used for crushing rice, the drying assembly is used for removing waste and dust generated in the threshing process and drying the threshed rice through a heating function, and the driving assembly is used for driving the crushing assembly and the telescopic assembly to synchronously operate to ensure that the threshing process is efficiently carried out; and the screening assembly is used for screening the threshed rice and waste materials generated in the threshing process, and further separation of the materials is achieved. Preliminary crushing is firstly carried out through the crushing assembly, the extrusion assembly achieves double-face extrusion through hydraulic control, it is ensured that grains fully fall off, the telescopic assembly can accurately adjust the threshing strength according to the variety and maturity of different rice, and the threshing efficiency is improved to the maximum extent.

The invention relates to the technical field of data centers, and discloses a secondary side circulation pipe network and a data center liquid cooling system, the secondary side circulation pipe network comprises a circulation pipeline structure, a water quality monitoring system, a water quality purification system and a control system; the circulation pipeline structure is suitable for forming a circulation loop between the cooling capacity distribution unit and the liquid cooling cabinet; the water quality monitoring system is arranged on the circulating pipeline structure; the water quality purification system is arranged in parallel with the circulating pipeline structure and is used for diluting and purifying water in the circulating pipeline structure; the control system is connected with the water quality monitoring system and the water quality purification system and used for receiving water quality data transmitted by the water quality monitoring system and controlling connection and disconnection between the water quality purification system and the circulation pipeline structure according to the water quality data. According to the invention, real-time monitoring and data feedback of the water quality of the secondary side circulating pipe network are realized, and the ability of re-purifying and utilizing the deteriorated water quality and recovering good water quality is realized under the condition of no shutdown.

The invention relates to the technical field of mine start-stop sensors, in particular to a mine start-stop sensor timing control system and a control method thereof.The control method comprises the following steps that S1, power-on self-inspection is conducted, specifically, after the system is powered on, a main control program automatically executes a self-inspection process, firstly, initialization write-in and read operation is conducted on a storage chip, and then the storage chip is started; by comparing whether the write-in data and the read data are consistent or not, judging the state of the memory, and recording the fault state by the system if the memory fault is detected, the mining start-stop sensor system can automatically adjust the start-stop time according to the equipment state and the external environment condition, so that the equipment is ensured to flexibly operate under different working conditions, and the working efficiency is improved. According to the system, errors of manual operation are effectively reduced by accurately controlling the start and stop process of the sensor, the precision and stability of equipment operation are greatly improved, and especially in a complex mine environment, the system can adapt to various emergencies, ensure continuous and efficient operation of equipment and reduce equipment failure and shutdown time.

The invention discloses a machining mold for fastener production and a machining method thereof.The machining mold comprises a mold body, a fixing piece is fixedly arranged on the mold body, a mounting sleeve is arranged on the outer side of the fixing piece in a sleeving mode, a reinforcing piece for abutting against and fixing the fixing piece is arranged on the mounting sleeve, and a feeding pipe is clamped in the fixing piece; a filtering piece for filtering the metal melt is inserted into the feeding pipe; through cooperation of the circulating flow channel and the filtering part, it is ensured that impurities can be efficiently removed in the flowing process of metal melt, meanwhile, pipeline blockage caused by impurity accumulation and metal melt solidification is avoided, the metal melt can flow along the conical surface through a conical barrel and filtering holes in the filtering part, the impurities are effectively intercepted, and the filtering effect is improved. And the C-shaped design of the circulating runner allows filtered impurities and part of the metal melt to enter the feeding pipe again, the runner is kept unblocked, and the design not only prevents accumulation of the impurities, but also avoids solidification of the metal melt through circulating flow.

The invention relates to the technical field of ventilation equipment, in particular to a ventilation pipe and draught fan connecting structure and a connecting method thereof.The ventilation pipe and draught fan connecting structure comprises a self-cleaning connecting mechanism installed between a ventilation pipe and a fresh air ventilator, and the self-cleaning connecting mechanism comprises an assembled flow guide shell, an airflow transmission seat, an annular filtering layer, a positioning cleaning piece and a wind power testing piece; the air inlet end of the assembled flow guide shell is connected with the fresh air machine, and the air outlet end of the assembled flow guide shell is connected with the ventilation pipe. The airflow transmission seat is mounted in the assembled flow guide shell, and the airflow transmission seat further comprises a rotating resistance piece mounted on the assembled flow guide shell; the annular filter layer is mounted on the airflow transmission seat; the positioning cleaning piece is mounted between the airflow transmission seat and the annular filter layer, and the cleaning surface of the positioning cleaning piece is attached to the outer wall of the annular filter layer; according to the wind power testing mechanism, the maintenance convenience can be effectively improved, and meanwhile, the service life of the mechanism is prolonged.

The invention belongs to the technical field of die-casting dies, and particularly relates to an adjusting and locking mechanism of a new energy automobile part die, which comprises a bottom plate, a moving assembly and a fixed die assembly are arranged at the top of the bottom plate, a supporting column and a circulating assembly are arranged at the bottom of the bottom plate, the circulating assembly comprises a plurality of water tanks and coolers, and the fixed die assembly comprises a cooling cavity and a cooling pipe. The movable mold assembly comprises a first mounting box and an electric telescopic rod, the moving assembly comprises a moving seat and a first mounting groove, a first motor and a first rotating shaft are arranged in the moving assembly, a filter plate in the circulating assembly is detachable, cooling liquid is kept clean, and the stability and forming quality of the mold at high temperature are ensured through a multi-water-tank circulating system and a cooler; the service life of the mold is prolonged, the mold is allowed to be accurately moved and positioned through the design of the moving assembly and the movable mold assembly, the size and shape accuracy of a formed part is ensured, the waiting time and the rejection rate in the production process are reduced through an efficient cooling system and accurate adjustment, and the production efficiency is improved.

The invention relates to the technical field of Internet of Vehicles target detection, in particular to an Internet of Vehicles multi-scene target detection system and method based on an RISC-V architecture, and the method comprises the steps: S1, obtaining image data, storing the image data in a DMA cache region preset on an RISC-V hardware calculation module, and setting the DMA cache region to be of a fixed size; s2, mapping the image data in the DMA cache region to an address space of a process on an RISC-V hardware calculation module by utilizing an mmap mechanism; s3, preprocessing the image data by using an RVV instruction; s4, after target detection model parameters are loaded for the first time, caching the preprocessed image data into a heterogeneous shared memory by using a cache consistency protocol supported by an RISC-V hardware calculation module, performing model reasoning, and obtaining perception information; s5, performing post-processing on the model reasoning result through a self-defined post-processing function, and obtaining display information; and the real-time frame rate of target detection, the overall performance of the system and the memory access efficiency are improved.

The invention discloses adjustable flue gas desulfurization demisting equipment, and relates to the technical field of environmental protection engineering, the adjustable flue gas desulfurization demisting equipment comprises a demisting machine, the outer wall of the bottom end of the demisting machine is fixedly provided with a flue gas inlet pipe, the top of the demisting machine is fixedly provided with an exhaust passage, and the outer wall of the top end of the demisting machine is slidably provided with an outer pull box. When smoke flows on the surface of the flow guide plate, smoke dust in the smoke can be attached to the inner wall of the flow guide plate, a motor is started, the motor drives a rotating rod to rotate, the rotating rod drives an L-shaped fixing frame to rotate, the L-shaped fixing frame drives a sliding rod to rotate, the sliding rod drives a connecting block to rotate, the connecting block drives a scraping plate to rotate, and the scraping plate scrapes away the smoke dust on the surface of the flow guide plate. According to the demister, the surface of the guide plate is kept clean, possible obstruction of smoke dust accumulation on smoke flowing is prevented, continuous and efficient operation of the demister is ensured, and therefore the treatment efficiency and stability of the whole demister are improved.

The invention discloses a feed production equipment defect identification method and system based on video monitoring, and relates to the technical field of equipment defect identification, when the system operates, video frames and equipment operation state information are collected in real time through a video monitoring system, and the integrity and real-time performance of data are ensured. And the defect detection module adopts a convolutional neural network to analyze the de-noised video frames, so that the accuracy and efficiency of defect identification are greatly improved. And the data analysis module calculates and generates an initial threshold THZ through statistical analysis of defect occurrence frequency and types. Then, a threshold value adjusting module dynamically adjusts a threshold value according to real-time detection data, and the self-adaptability of the detection model under different conditions is ensured; according to the process, the adaptive capacity of the system to different production environments is remarkably improved, the missing report rate and the false report rate are reduced, and the system can clearly know the occurrence trend and frequency of each type of defects in a specific time period through accurate defect statistics and classification.

The invention relates to the field of pipe fitting production, in particular to a three-way pipe fitting production mold which comprises a lower mold set and an upper mold set, injection molding cavities are formed in the lower mold set and the upper mold set, a lifting assembly used for discharging is arranged in the lower mold set, a plurality of ejector rods are arranged in the injection molding cavities of the lower mold set, cavities are formed in the ejector rods, and the lower mold set and the upper mold set are arranged in the cavities. A liquid inlet end and a liquid outlet end are arranged at one end of the ejector rod, and a material conveying assembly matched with the liquid inlet end and the liquid outlet end is mounted at one end of the ejector rod; through the unique internal linkage cooling and demolding design, the problems of slow cooling forming and low machining efficiency of a traditional technology are effectively solved, in the mold, the ejector rod is matched with the spraying assembly, the ejector rod can synchronously conduct cooling liquid circulation cooling in the mold action process, the inner wall of the three-way pipe can be rapidly and evenly cooled, and the machining efficiency is improved. The problems that in a traditional technology, only surface water spraying is conducted, so that cooling lag of the inner wall is caused, and existing equipment is low in cooling forming speed and low in machining efficiency when used for producing the three-way pipe are solved.

The invention discloses a wind turbine generator blade icing degree prediction method and device, equipment and a medium, relates to the technical field of wind power generation, and aims to obtain unit environment monitoring information and weather forecast information of a wind power plant under different time granularities, and perform standardization processing and serialization processing to obtain a wind turbine generator blade icing degree prediction result. Performing feature extraction on the processed unit environment monitoring information and weather forecast information by using a neural network model to obtain environment monitoring time sequence features and weather forecast time sequence features; calculating the environment monitoring time sequence characteristics and the weather forecast time sequence characteristics based on an attention mechanism to obtain an environment monitoring weight coefficient and a weather forecast weight coefficient; and inputting the environment monitoring weight coefficient, the environment monitoring time sequence characteristics, the weather forecast weight coefficient and the weather forecast time sequence characteristics into a neural network model, outputting a blade icing degree probability, and predicting the wind turbine blade icing degree according to the blade icing degree probability, thereby improving the overall operation efficiency of a wind power plant, and ensuring the safety of the unit, personnel and equipment assets.

The invention relates to the technical field of chemical production equipment, and discloses a chemical raw material grinding device with an automatic cleaning function, which comprises a machine body as a support carrier of the whole device, and the outer side of the machine body is connected with a machine door through a hinge; the crushing assembly is mounted on one side of the top end of the machine body and is used for crushing the chemical raw materials; the fine grinding assembly is mounted on the upper surface of the machine body and used for grinding the crushed raw materials; and the knocking assembly is installed outside the smashing assembly and used for generating vibration on the fine grinding assembly. By additionally arranging the crushing assembly and then cooperating with the fine grinding assembly, chemical raw materials fall on the outer surface of an arc-shaped filter screen after being crushed, fine grinding of the chemical raw materials is achieved through reciprocating movement of a grinding roller, the chemical raw materials can be effectively treated to reach the needed particle size, repeated operation in a traditional grinding method is reduced, and the grinding efficiency is improved. And the overall processing efficiency is improved.

The invention discloses an improved back pressure plate in the technical field of dehydrators. The improved back pressure plate comprises a back pressure plate sealing plate, a sealing plate adjusting component and an incomplete sealing plate, the backpressure plate sealing plate is mounted at a sludge outlet of a sludge outlet box of the dehydrator, and is provided with a plurality of groups of through holes through which the spiral shaft penetrates; a plurality of groups of sealing plate adjusting components are arranged, are respectively mounted between the corners of the back pressure plate sealing plate and the sludge outlet box, and are used for adjusting the distance between the back pressure plate sealing plate and the sludge outlet; a plurality of groups of incomplete sealing plates are arranged, and the number of the incomplete sealing plates is equal to that of spiral shafts of the dehydrator; by means of the incomplete sealing plate installed on the spiral shaft, the mud outlet in the tail end is in a periodic covering and opening state, it is ensured that the pressure in all positions is moderate, the situation that a mud cake is too wet due to insufficient pressure is avoided, the blocking problem caused by too large pressure is also prevented, and the mud cake is prevented from being blocked through rotation of the incomplete sealing plate. And extruded mud cakes can be scraped in time, and continuous and efficient operation of equipment is guaranteed.

The pipeline pressure online detection device comprises a high-pressure connecting pipe, one end of the high-pressure connecting pipe is connected with a pressure measuring three-way valve, the second connecting end of the pressure measuring three-way valve is connected with a common pressure gauge, and the third connecting end of the pressure measuring three-way valve is connected with a water conservancy irrigation pipeline through a pipeline. A pipeline stop valve is arranged on the pipeline between the pressure measuring three-way valve and the water conservancy irrigation pipeline, the other end of the high-pressure connecting pipe is connected with a manual hydraulic pressure pump, and the manual hydraulic pressure pump is connected with a precision pressure gauge. According to the pipeline pressure online detection device for the water conservancy irrigation well, the problems that a pressure measuring instrument of a water conservancy irrigation well pipeline is long in inspection time and inconvenient to disassemble and assemble are solved.

The invention discloses an automatic feeding device for metal plate stamping, and belongs to the technical field of metal plate stamping feeding, and the automatic feeding device is technically characterized in that the automatic feeding device comprises a conveyor, a first workbench and a second workbench, through an arranged one-by-one discharging mechanism, the material circulation speed can be remarkably increased, the manual carrying and waiting time is shortened, and the working efficiency is improved. Through the arrangement of the grabbing and discharging mechanism and the limiting and pushing mechanism, grabbing and movement control of metal plates can be well achieved, and therefore the automatic grabbing and moving process is achieved, the operation process is greatly simplified, the physical burden of workers is relieved, and the working efficiency is improved. Compared with a traditional manual feeding mode, the feeding device has the advantages that the feeding time can be greatly shortened, production interruption is reduced, stamping equipment can continuously and efficiently operate, the automation degree is high, and the production efficiency is improved. The device has the advantages of being convenient to feed and punch, low in cost and high in automation degree.

The invention belongs to the technical field of friction plate machining, and particularly relates to a clamping tool for brake friction plate machining, which comprises a dust hood, a water storage tank and a turntable, the clamping mechanism is arranged on the rotary table; the dust collection box is arranged on the outer side of the dust suction hood in a sleeving mode, and the lower end of the dust collection box is fixedly connected with a base; the auxiliary mechanism is arranged in the base; wherein the auxiliary mechanism comprises a driving part, the driving part is fixedly installed in the base, a first hollow cylinder is fixedly connected to the inner wall of the water storage tank, a lifting part is arranged at the lower end of the first hollow cylinder, a water conveying part is arranged at the upper end of the first hollow cylinder, and a negative pressure part is arranged at the lower end of the dust suction hood. And a cleaning part is arranged in the dust collection cover. According to the device, efficient fixing, cooling, dust collection and cleaning of the friction plate can be achieved, the stability and safety of the machining process are ensured, and meanwhile the machining efficiency and the product quality are improved.

The utility model discloses a kind of automatic extraction machines for health food production, it is related to extraction machine technical field, including extraction machine main body, two baffle are fixedly installed on the extraction machine main body, the opposite end of two baffle is fixedly installed with connecting block, the lower end of two connecting blocks is fixedly installed with guide rod, the circumferential surface of two guide rods is slidably installed with limit lifting plate, two limit lifting plates are fixedly installed with waste collecting plate between, the top rod is slidably installed on two limit lifting plates, the height of the waste collecting plate of the new type can be flexibly adjusted, this characteristic makes it can perfectly adapt to various different height of separating funnel, greatly expand the application range of equipment, whether small or large separating operation can guarantee the effective collection of waste and waste liquid, avoid the inconvenience of operation and resource waste due to equipment mismatch.

The utility model relates to the technical field of sewage suction and purification vehicles, in particular to a movable sewage suction and purification vehicle which comprises a bottom plate, a plurality of pulley mechanisms, a settling tank, a filter tank, a cover plate and a connecting mechanism, the pulley mechanisms are arranged at the bottom of the bottom plate, a push handle is arranged on one side of the bottom plate, and the filter tank is arranged on the other side of the bottom plate. The settling tank is placed at the top of the bottom plate, the top of the settling tank is connected with one end of a positioning block, the other end of the positioning block penetrates through the bottom plate, a sewage discharging assembly is arranged at the bottom of the front face of the settling tank, the filtering tank is connected with the bottom plate through the connecting mechanism, and the cover plate is connected with the filtering tank through a first bolt. A material pumping assembly is arranged on the cover plate, a discharging assembly is arranged at the bottom of the filtering box, and the connecting mechanism comprises a telescopic air cylinder, a connecting block, a fixing block and a second bolt.

The utility model discloses a purification device for river regulation, which belongs to the technical field of hydraulic engineering and comprises a tank body, a water inlet pipe and a water outlet pipe are respectively mounted on the outer wall of the tank body, a filter screen is mounted in the tank body, a cleaning mechanism is arranged at the top end of the tank body and comprises a tank cover and a connecting rod, and the connecting rod is connected with the tank cover. The tank cover is installed at the top end of the tank body, a supporting frame is fixedly connected to the upper surface of the tank cover, an air cylinder is fixedly connected to the upper surface of the supporting frame, the output end of the air cylinder penetrates through the supporting frame and the tank cover and is connected with a connecting rod, a scraper is fixedly connected to the bottom end of the connecting rod, and the scraper makes contact with the inner wall of the filter screen in an attached mode; the connecting rod and the scraper are driven by the air cylinder to slide in the filter screen, dirt on the inner wall of the filter screen is scraped off by the scraper and falls into the storage hopper, extra manpower consumption during replacement of the filter device is reduced, and continuity of the device during working is improved.

The utility model relates to the technical field of box-type movable houses, in particular to a heat-insulating and energy-saving box-type movable house which comprises a box-type movable house body and an air inlet frame, a filter plate is inserted in the left portion of the air inlet frame, mounting plates are mounted on the front side and the rear side of the filter plate, mounting grooves are formed in the front side and the rear side of the left portion of the air inlet frame, and the air inlet frame is connected with the air inlet frame. Inserting blocks are installed on the front side and the rear side of the top of the filter plate, two inserting grooves are formed in the left side of the inner top wall of the air inlet frame, two sliding grooves are formed in the left side of the upper portion of the air inlet frame, and sliding plates are slidably connected to the inner walls of the sliding grooves; the filter plate is inserted into the left side of the air inlet frame to filter outside air, purified air is guided into the box-type movable house, the indoor air quality is improved, the filter plate and the air inlet frame are in detachable assembly type connection design, regular cleaning and maintenance are facilitated, and therefore continuous and efficient operation of the ventilation system is guaranteed; the service life of equipment is prolonged; the maintenance cost is reduced.