613 results about "Oil pollution" patented technology

The invention discloses a hydraulic engineering motor set fault early warning system, and relates to the technical field of hydraulic engineering equipment monitoring, and the hydraulic engineering motor set fault early warning system comprises the following steps: S1, collecting and integrating mechanical state data, including vibration, temperature and oil pollution monitoring; s2, electrical parameter monitoring and complementary analysis are carried out, and mechanical data are associated to identify faults such as short circuit; s3, hydraulic monitoring and cooperative early warning are carried out, pressure flow abnormity is detected, and mechanical and electrical data are linked; s4, multi-source data fusion and fault classification are carried out, and dynamic weight distribution is carried out to improve the diagnosis accuracy; s5, dynamic threshold optimization and cloud decision making are carried out, and the threshold is adjusted according to working conditions to reduce the false alarm rate; s6, closed-loop maintenance and intelligent pushing are carried out, faults are positioned, maintenance suggestions are pushed, and closed-loop verification is carried out; the method has the beneficial effects that accurate fault classification, cross-dimension collaborative early warning and closed-loop maintenance decision making are realized, and the operation reliability and the maintenance efficiency of the unit are remarkably improved.

The invention discloses a surveying and mapping method based on remote sensing big data analysis, and relates to the technical field of remote sensing big data. During operation of the system, images and spectral data of a target water body area are collected through satellite remote sensing, unmanned aerial vehicle remote sensing or a ground sensor, the collected remote sensing data are preprocessed, and the target water body area is obtained through waveband combination or spectral line analysis; the method comprises the following steps: extracting characteristic parameters of a water body by utilizing spectral information in remote sensing data, carrying out multi-dimensional analysis on field data, calculating to obtain a water body turbidity coefficient Ct, an algal bloom coefficient Ca and an oil pollution coefficient Co, and analyzing the influence of potential pollution sources, agricultural runoff and industrial wastewater discharge on the water body by combining the remote sensing data and geographic information. And performing spatial-temporal change analysis on the water body pollution condition, identifying the trend of pollutant expansion or degradation, and based on the results of pollution assessment and spatial-temporal analysis, comparing the comprehensive water quality index WQI with a preset threshold to generate water quality level early warning information.

The invention relates to the technical field of wind driven generator monitoring, in particular to a fan fault early warning and diagnosis method fusing multi-modal time sequence data, which comprises the following steps: respectively acquiring vibration time sequence data, current time sequence data and temperature time sequence data of a fan, and respectively calculating a first feature sequence, a second feature sequence and a third feature sequence; generating a fault early warning signal based on a three-state polarity synchronous counting mechanism; calculating a dispersion statistical value, and executing chronic fault diagnosis; when the fan is in a low-load steady-state working condition, active lubrication state detection and feedback are executed; when the first feature sequence is calculated, synchronously executing adjoint oil product pollution diagnosis; and the environment temperature is judged through the temperature time sequence data, and low-temperature working condition adaptability compensation is executed under the low-temperature working condition. The main purpose of the invention is to solve the problems in the prior art that early fault signs cannot be effectively captured due to information loss during fusion processing of multi-modal data, and real faults and external interference are difficult to distinguish.

The invention relates to a preparation method of a hydrophobic and oleophobic PTFE membrane, and belongs to the technical field of PTFE membrane preparation. Aiming at the problems that an existing PTFE membrane is difficult to construct a micro-nano multi-stage coarse structure and has a synergistic effect with low chemical surface energy, the hydrophobic and oleophobic properties are insufficient and the structural stability is poor, the key points of the technical scheme provided by the invention are as follows: firstly, carrying out ethanol ultrasonic cleaning on a PTFE base membrane of 20-30 microns, and carrying out vacuum plasma treatment to form a nano coarse structure and oxygen-containing polar group active sites; then, under the protection of nitrogen, immersing into an ethanol solution containing perfluorodecyltriethoxysilane, dibutyltin dilaurate and nano cellulose whiskers, carrying out hot-pressing compounding with PET non-woven fabric, carrying out heat treatment, and finally, coating with a fluorine-containing polymer nano fiber layer through an electrostatic spinning process; the composite hydrophobic layer with the synergistic effect of a micro-nano multistage coarse structure and chemical low surface energy is formed, the water contact angle is larger than or equal to 155 degrees, and the oil contact angle is larger than or equal to 130 degrees. The PTFE film prepared by the preparation method can be used in the fields of waterproof breathable materials, self-cleaning surfaces, oil-resistant packaging and the like.

The invention discloses a wind power generation equipment gearbox oil state detection method and system, and the method comprises the steps: obtaining an oil sample, carrying out the quantitative analysis of solid, liquid and gas pollutants through an oil pollution degree analysis model, and processing the parameters such as kinematic viscosity through an oil physicochemical property analysis model; and after the tensors of the two results are fused, feature decoupling and deep feature mining are performed, and finally, the oil state is judged by a state evaluation decision model. The system is correspondingly provided with six units such as a sample acquisition unit and a pollution analysis unit to realize the functions. According to the scheme, the defects that traditional detection is single and correlation analysis is lacked are overcome, a certain index is not independently detected any more, pollution and physicochemical property information is comprehensively integrated, the relation between the pollution and the physicochemical property information is deeply analyzed through tensor fusion, feature decoupling and other technical means, accurate evaluation of the oil state of the gearbox is achieved, and the detection accuracy is improved. And misjudgment caused by one-sided detection or no consideration of mutual relations is effectively avoided.

The invention discloses a steel plate defect detection method and system, electronic equipment and a storage medium, and is characterized in that the method comprises the following steps: synchronously collecting a surface optical image, ultrasonic detection data and infrared thermal imaging data of a steel plate, and carrying out space-time registration and noise suppression processing on the multi-modal data; high-precision multi-defect detection: through multi-modal data fusion and a deep learning model, the single-frame processing time consumption is less than or equal to 15ms, the omission ratio is less than or equal to 0.3%, and the industrial high-speed continuous operation requirement is met; the interference such as oil contamination and light reflection is effectively inhibited through multi-modal data cross validation, the false alarm rate is reduced, the environmental adaptability reaches-20 DEG C to 60 DEG C / 95% RH, and the stability of complex working conditions is ensured; manual work is replaced by full-automatic detection, so that the cost is saved, a defect data driving process is optimized, the yield is improved by 3%-5%, and the operation and maintenance efficiency is improved by 70%; the modular design supports detection of multiple metal plates, the model supports online learning and remote upgrading, seamless connection with an industrial Internet of Things platform is achieved, and the technology expansibility is high.

The utility model provides a combined hydraulic valve of a high-lift system. The combined hydraulic valve is composed of an electric connector unit, a shell assembly unit, a pilot control unit and a main valve unit. Wherein an oil filter assembly is arranged at an oil inlet of the pilot control unit; according to the pilot control unit of the combined hydraulic valve, the oil filter assembly is arranged at the oil inlet, foreign matter can be prevented from entering an inner cavity of the pilot valve, and therefore abnormal opening or closing of the pilot valve is avoided; the guide rod and the guide sleeve of the main valve unit are sealed in a sliding ring combination mode, oil leakage is avoided, therefore, the fit clearance of the main valve unit can be properly increased, after the fit clearance is increased, the situation that normal reversing action cannot be achieved due to valve clamping stagnation caused by oil pollution can be avoided, and the anti-pollution capacity of a product is improved.

The invention provides a control system and method for improving the performance of an electromagnetic proportional valve, and the system comprises a controller which is connected with the electromagnetic proportional valve and is used for outputting a trapezoidal wave current signal with a certain frequency to the electromagnetic proportional valve when being powered on, and controlling the opening and closing of the electromagnetic proportional valve, hydraulic oil in the valve body of the electromagnetic proportional valve is stirred along with movement of the valve element, and the problems that the movement speed of the valve element is abnormal and the output pressure is abnormal due to the fact that the content of impurities in the oil is uneven are solved. The controller is further used for outputting a trapezoidal wave current signal to the electromagnetic proportional valve and controlling the electromagnetic proportional valve to be opened and closed when the electromagnetic valve of the whole vehicle operation safety handle switch is opened, new oil enters the electromagnetic proportional valve through the oil inlet in the process that the valve element moves back and forth, and the oil alternately flows out of the outlet and the oil return opening. Impurities flow out through circulation, and the purpose of cleaning is achieved. According to the control system and method, the problem that the electromagnetic proportional valve is poor in consistency due to long-time use and oil pollution is solved.

The present invention provides a sewage solid-liquid separation device, which belongs to the technical field of sewage treatment, and includes a primary sedimentation tank, a first pipeline, a separation box assembly, a second pipeline, an air collection assembly, a water replenishment backwashing pipeline, an oil discharge pipeline and a PLC control system; the two ends of the first pipeline are respectively connected to the primary sedimentation tank and the separation box assembly; the second pipeline, the water replenishment backwashing pipeline, and the oil discharge pipeline are respectively connected to the separation box assembly; the sewage containing solid impurities and oil pollution first enters the interior of the primary sedimentation tank, and is pumped into the interior of the separation box assembly after preliminary neutralization and precipitation. Under the continuous impact of the airflow, the oil pollution in the separation box assembly will float on the sewage surface, and the solid particles in the separation box assembly will become smaller. The present invention performs aeration in different areas of the separation box body, thereby improving the efficiency of air flotation, alternately aerating near the two side walls of the separation box body, accelerating the discharge speed of the oil pollution, and using a cutter to reduce the particle size of the solid, thereby reducing the difficulty of sludge treatment.

The invention provides a lubricating oil production multi-source data fusion analysis method which comprises the following steps: acquiring a stirrer rotating speed signal, acquiring pressure distribution data of a corresponding pipeline, and if the stirrer rotating speed fluctuation range exceeds a preset threshold range, marking that the stirring rotating speed is abnormal; analyzing the pressure distribution change of the pipeline when the stirring rotating speed is abnormal, combining the monitored viscosity change of the oil fluid and the difference of the oil circulating flow speed, and performing fusion calculation to obtain a shear stress distribution index in the pipeline; if the shear stress distribution index is abnormal, the suspension state of oil particles and the deposition rate of pollution particles are detected, and if the suspension state and the deposition rate exceed corresponding preset threshold values, the oil pollution diffusion degree is determined through the suspension state and the deposition rate; and identifying abnormal equipment according to the abnormal signal time sequence correlation, acquiring operation parameters of the abnormal equipment, synchronously analyzing to obtain equipment operation state coupling, analyzing equipment fault chain reaction characteristics, and generating an equipment chain abnormality distribution diagram according to the chain reaction characteristics.

The utility model discloses a range hood which comprises a centrifugal fan, the centrifugal fan comprises a volute and an impeller arranged in the volute, and the impeller comprises blades; the detection module comprises a transmitting module and a receiving module; the transmitting module is used for transmitting infrared light to the blades at the corresponding positions; the receiving module is used for receiving reflected light of the blades; and the processing assembly is electrically connected with the detection module and can judge the thickness of the oil film accumulated on the blade according to the light intensity of the receiving module. Compared with the prior art, the utility model has the advantages that the oil accumulated on the blades has large difference in absorptivity to infrared spectrums with specific wavelengths due to different thicknesses, so that the state and the thickness condition of a medium are judged by detecting the intensity of reflected light at a fixed position, and the smudginess condition of the impeller can be obtained; the detection accuracy of the pollution degree is improved, so that the oil pollution condition and the dynamic balance damage condition are accurately judged.

The invention relates to the technical field of sewage treatment, and particularly discloses a sewage treatment device and process, the sewage treatment device comprises a deoiling pool, the deoiling pool comprises a water inlet pipeline, a water outlet pipeline and a pool body, and the water inlet pipeline and the water outlet pipeline are arranged on two opposite sides of the pool body; the multiple oil stain separation devices are installed at the upper end of the oil removal pool in the direction from the water inlet pipeline to the water outlet pipeline, the lower sides of the oil stain separation devices are located in the oil removal pool, the oil stain separation devices are partially located in sewage, and each oil stain separation device comprises a low-temperature pipeline, a driving assembly, a collecting mechanism, a roller and a telescopic assembly; the telescopic assembly vibrates the liquid bag to enable the oil shell to fall off and enter the discharging assembly, then the oil shell is discharged from the pool body through the discharging assembly, and the oil dirt separation device is beneficial to separation of oil dirt in sewage.

The utility model relates to an oil circulation mechanism of a gearbox running-in workbench, which comprises a shell, a polluted oil tank, a transition oil tank and a clean oil tank are sequentially arranged in the shell from right to left, and one side of the polluted oil tank and one side of the transition oil tank are connected with a dirty oil filtering assembly; and the running-in stations are symmetrically arranged on the two sides of the shell, two sets of running-in stations are arranged on each side, and each set of running-in stations comprises an operation panel, a circulating oil port connected with the gearbox and a circulating filtering assembly used for filtering oil liquid. The utility model relates to the technical field of gearbox running-in workbenches. According to the oil circulating mechanism of the gearbox running-in workbench, through the arrangement of the dirty oil filtering assembly and the circulating filtering assembly, dirty oil in a gearbox can be filtered in the gearbox running-in period, the oil is synchronously filtered in the gearbox running-in working period, the shutdown oil changing time is saved, the service life of the oil is prolonged, and the working efficiency is improved. The abrasion of equipment parts is reduced, the non-planned downtime of the equipment is shortened, and the oil pollution treatment cost is reduced.

The present invention belongs to the technical field of machining equipment, and specifically is a cutting fluid oil-water separation and filtration system, comprising a controller and a collecting box, a filter plate fixedly connected between the inner walls of the collecting box; the collecting box is connected to an oil-water separator through a water pump; an electric push rod is fixedly connected to the outer side of the collecting box; the piston rod of the electric push rod penetrates the collecting box and is fixedly connected to a push plate; the push plate is located above the filter plate; the area of ​​the bottom of the push plate is smaller than the area of ​​the top of the push plate; a waste box is fixedly connected to the collecting box; the waste box is away from the electric push rod and is provided with a feed port at a position corresponding to the push plate; the present invention facilitates the collection of chips by arranging a collecting box, prevents chips from accumulating in large quantities on the filter plate and causing clogging of the filter plate, improves the stability of the working process of the filtration system, prevents oil pollution from overflowing, reduces damage to the production environment, prevents the occurrence of safety accidents, reduces the impact of chips in the oil-water separation process, and improves the efficiency and effect of oil-water separation.

The oil stain cleaning method and device, the household appliance and the computer readable storage medium are applied to a range hood, and the oil stain cleaning method comprises the steps that a motor is used for driving an impeller to reversely rotate for multiple times according to a preset progressive increase rotating speed, and a weight sensor is used for detecting the weight of the impeller during rotation every time to obtain multiple detected weights of the impeller; determining the adhesive force of the oil stain on the impeller to the impeller based on the plurality of detection weights; if the adhesion force is smaller than the preset value, determining the weight of oil stains on the impeller based on the multiple detection weights and the initial weight of the impeller; and the impeller is cleaned to different degrees based on the oil dirt weight. In the invention, the motor drives the impeller to reversely rotate for multiple times, so that the influence of the generated wind on the measurement of the weight of the impeller by the weight sensor is reduced. The weight of the impeller is measured in the rotating process of the impeller, and the influence of oil stain adhesive force on the weight of the impeller is avoided. The impeller is cleaned to different degrees after the viscous force of the oil dirt to the impeller is compared with the preset value, and the impeller cleaning mode is optimized.

The utility model relates to the field of overwater oil spill treatment, and discloses an overwater oil spill robot which comprises a main hull unit, and a camera unit, a radar unit and a mechanical arm unit are arranged on the main hull unit. The camera unit is used for acquiring image data in a preset range of the main hull unit in real time and sending the image data to the control center; the radar unit is used for receiving an echo signal of an electromagnetic beam actively emitted by the radar antenna to obtain an object identification and analysis result and sending the object identification and analysis result to the control center; the mechanical arm unit is used for extracting a detection target when receiving an instruction of allowing extraction of the monitoring target from the control center. The mechanical arm unit comprises a front end claw, a server, a hexagonal linkage wheel, a connecting rod piece, a supporting arm, a disc connecting piece and a right-angle fixing base. According to the technology, people do not need to directly relate to a dangerous water area, the monitoring and cleaning work efficiency is greatly improved, oil contamination can be rapidly and accurately positioned, and larger environmental damage caused by oil contamination diffusion is avoided.

The utility model relates to the technical field of aquaculture, in particular to a nursery pond water surface floating foam cleaning device which comprises a foam collecting frame floating on the water surface, an opening in one side of the foam collecting frame is used for allowing floating foam to flow in, an air blowing pipe is fixed above one side of the opening of the foam collecting frame and communicated with an air blowing pump, and an air outlet hole is formed in the side face of the air blowing pipe. The air outlet holes blow air downwards to the inner side of the foam collecting frame; an air suction pipe for sucking floating foam is further fixed above the foam collecting frame, an air suction hole is formed in the lower side of the air suction pipe, and the air suction pipe is connected with a foam pumping pump through a foam pumping pipe; the device can quickly remove floating foam, impurities and oil stains on the surface of the seedling pond, so that the survival rate of aquatic seedling culture is improved, and the device is reasonable and simple in structure, low in cost, convenient to operate, high in practicability and wide in application prospect.

The invention discloses an automatic transformer disassembly process, which relates to the technical field of transformer disassembly and comprises the steps of oil drainage, oil standing, weighing, cutting of bolts between an upper cover and a shell, hoisting and cutting separation of the upper cover and a battery cell, cutting separation of the upper cover and an upper frame, battery cell carrying, silicon steel sheet (or silicon steel sheet) extraction, copper winding pulling out, bottom frame output and the like. Automatic disassembly of transformers can be achieved, the whole disassembly process is operated in a closed-loop mode in a container, disassembly work of 72 transformers can be completed in one day, safety accidents can be avoided, the disassembly efficiency is improved, and the problems that in a traditional operation mode, operators are exposed to occupational health risks such as oil contamination leakage and mechanical injury for a long time, and the working efficiency is high are solved. And the operation standardization degree is low due to excessive dependence on artificial experience.

The invention relates to an oil-water separation device and an oil-water separation method, in particular to a novel integrated oil-water separation microbubble air flotation machine and an oil-water separation method, and aims to solve the problems that although the existing air flotation technology has remarkable advantages in treatment of an oil-water mixture, the oil-water separation effect is poor; however, the traditional air flotation equipment still has the defect of certain limitation in treatment efficiency and thoroughness in oil stain removal. According to the novel integrated oil-water separation microbubble air flotation machine, a multiphase flow pump is used for generating a large number of microbubbles, and oil dirt is promoted to float upwards; meanwhile, oil stains on the water surface are adsorbed through the oil stain adsorption material and extruded and recycled through the roller assembly, and the oil stain removal efficiency is effectively improved.

The embodiment of the present invention discloses a method, device, electronic device and storage medium for identifying ground oil pollution in a substation. The method includes: obtaining a ground image to be detected of the substation to be tested; inputting the ground image to be detected into a pre-trained ground oil pollution semantic recognition model to obtain a target ground image; wherein the ground oil pollution semantic recognition model is constructed based on a fully convolutional network and a residual network, and the model parameters in the ground oil pollution semantic recognition model are determined based on a random weighted average method; if the target ground image is marked with at least one ground oil pollution, the target ground image is output to the management platform of the substation to be tested. Through the technical solution of the embodiment of the present invention, the technical effect of improving the accuracy and speed of identifying ground oil pollution is achieved.

The utility model relates to the technical field of waste plastic recovery treatment, in particular to an oil stain treatment device which comprises a box body, a spraying mechanism is arranged at the top of the box body, a placing plate is fixed on the inner side of the box body, the bottom of the placing plate is communicated with a flow guide cover, and sealing doors are hinged to the two sides of the front face of the box body. A filtering mechanism is arranged in the box body, and cleaning assemblies are arranged on the two sides of the inner wall of the box body; the cleaning assembly comprises at least two driving motors, and the driving motors are fixed to the inner wall of the box body; the oil stain treatment device provided by the utility model has the beneficial effects that impurities filtered from the filter cartridge can be quickly cleaned by driving the scraper plate through the cleaning motor, and the impurities can be flushed out from the strip-shaped hole through the flushing pipe of the storage box; and the sealing plate can play a role in quickly sealing and discharging waste under the action of the spring, so that the filtering work can be conveniently and continuously carried out.

The present disclosure provides an oil-water separation ultrafiltration membrane and its preparation method and application, which belongs to the technical field of membrane material preparation. Preparation method: according to the mass of the casting liquid of 100wt%, 10~25wt% of polyvinylidene fluoride is mixed with 5~15wt% of porogen and 1~5wt% of phytic acid, and then 0.01~20wt% of zirconium salt is added, and the casting liquid is obtained after mixing and degassing; the casting liquid is coated on a flat plate to obtain a flat membrane; the flat membrane is placed in a coagulation bath for treatment; the coagulation bath includes an organic silane with a concentration of 0~100mM / L. Also disclosed is an oil-water separation ultrafiltration membrane prepared according to the above method and its application in an oil-water separation system. The oil-water separation ultrafiltration membrane prepared by the present disclosure has good oil-water separation performance, high water permeability recovery rate, strong anti-oil pollution performance, and has the advantages of reusability and low economic cost; the preparation method disclosed in the present disclosure is simple, the conditions are mild, and the scope of use is wide.

The utility model belongs to the technical field of environment emergency disposal, and discloses a water pollution and oil contamination intercepting device which comprises an intercepting sleeve, a clamping block is installed at one end of the intercepting sleeve, a plurality of installation holes are formed in one side of the clamping block in a penetrating mode, a clamping base is arranged at the other end of the intercepting sleeve, a plurality of installation holes are formed in the two sides of the clamping base in a penetrating mode, and a connecting rope is installed at the bottom end of one side of the clamping base. A cylinder is mounted at the other end of the connecting rope, a plurality of trapezoidal grooves are formed in the peripheral side of the cylinder, a fixing mechanism is mounted at the top end of one side of the clamping seat, a pair of first mounting seats is symmetrically mounted on one side of the intercepting sleeve, a sliding block is slidably mounted between the pair of first mounting seats, and a plurality of oil suction plates are mounted on one side of the sliding block; threaded holes are formed in the two ends of the pair of first installation bases and the two ends of the sliding block. According to the device, the single intercepting sleeve can be quickly mounted and dismounted, so that the overall length of the intercepting device is adjusted, the flexibility and adaptability of the intercepting device are improved, and meanwhile, the intercepting effect of the intercepting device is improved through the arrangement of an oil absorption plate.

The invention discloses a range hood energy efficiency test method and system, and the method comprises the steps: selecting a typical oil smoke region set, constructing an oil stain anomaly detection model, marking abnormal points in the typical oil smoke region set based on the oil stain difference before and after oil suction, and carrying out the oil smoke test at the abnormal points. The method comprises the steps of obtaining a deviation distribution function based on a variable change condition, obtaining a time energy efficiency factor set and a space energy efficiency factor set, constructing an objective function, determining weights of factors in the time energy efficiency factor set and the space energy efficiency factor set, and constructing an energy efficiency test model based on the objective function and the weights of the factors. And obtaining test results of the range hood under different gears by using the energy efficiency test model. The method improves test comprehensiveness, improves scientificity and accuracy of product energy efficiency evaluation, has good interpretability, and can be directly applied to an energy efficiency test system of the range hood.

The utility model discloses a gun barrel type machine vision detection mechanism for high oil contamination occasions, which comprises a displacement sliding table, a rotating shaft sleeve is movably arranged on one side of the displacement sliding table, a camera shaft sleeve is inserted into the lower end of the rotating shaft sleeve, and a first sealing ring is mounted at the joint of the camera shaft sleeve and the rotating shaft sleeve. A second sealing ring is mounted at the joint of the light source shaft sleeve and the camera shaft sleeve, a camera is mounted in the camera shaft sleeve, a lens is arranged below the camera, a light source is mounted in the bottom end of the light source shaft sleeve, and a third sealing ring is mounted at the joint of the light source and the light source shaft sleeve. The integrated design of the camera, the lens and the light source is adopted, the rotating shaft sleeve can drive the camera and the light source to rotate together, and the adjusting efficiency of the camera is improved; sealing rings are further arranged at the connecting positions of all the components, oil stains can be effectively prevented from invading the interior of the machine body to corrode the camera, and the service life of the detection mechanism is prolonged.

The present invention relates to the technical field of bearing detection, and specifically provides a bearing clearance detection device, which includes a machine table, and a workbench and a feeding mechanism are arranged at the upper end of the machine table; a first detection station, a first NG station, a second detection station, a second NG station, a third detection station, and a third NG station are sequentially arranged on the workbench; a flexibility detection mechanism, a first kicking mechanism, an axial clearance detection mechanism, a second kicking mechanism, a radial clearance detection mechanism, and a third kicking mechanism are sequentially arranged along one side of the workbench; the present invention integrates the detection of the rotational flexibility, axial clearance, and radial clearance of the bearing on the same device, with a high degree of overall automation and mechanization, effectively improving the detection efficiency of the bearing; the clearance detection of the bearing can be achieved by detecting the deformation amount of the elastic body, without inserting a measuring pen into the bearing, which can avoid problems such as lubricating oil pollution and wear, and improve the finished product quality of the bearing products.

The invention provides a coal mill oil way plate and a reversing control device thereof, and relates to the technical field of coal mill oil way plates, the coal mill oil way plate comprises a valve block body, a proportional overflow valve, a duplex electromagnetic reversing valve group, a working oil way group, two hydraulic control one-way valve groups, two energy accumulators, a safety overflow valve, an online particle counter and a spiral cooling flow channel. The redundancy design of the duplex electromagnetic directional valve group improves the reliability of the system, so that the system can still be operated when a single valve fails, the hydraulic control one-way valve group realizes mechanical locking of an oil cylinder and can prevent a grinding roller from falling off during power failure, and the energy accumulator is connected with a working oil duct through a connector to absorb pressure impact and compensate leakage, so that the stability of loading pressure is maintained, and the reliability of the system is improved. The on-line particle counter gives an early warning of oil pollution in real time, hydraulic faults can be reduced, the spiral cooling flow channel is matched with the semiconductor temperature control piece to adjust the oil temperature, and the problem of pressure drift caused by oil viscosity fluctuation under high and low temperature working conditions is solved.

The invention relates to the field of sewage treatment, in particular to a sewage circulation purification treatment device and method for a water conservancy project. The device comprises a purification treatment box, a multi-layer filtering assembly, a telescopic spraying assembly and a purification treatment assembly. The purification treatment box is divided into a primary purification chamber and a secondary purification chamber; the multi-layer filtering assembly is arranged in the first-stage purification chamber and is used for performing multi-layer filtering treatment on water conservancy project sewage; the telescopic spraying assembly is positioned in the secondary purification chamber and is communicated with the liquid storage cylinder to downwards spray a precipitation reagent; the purification treatment assembly is located below the telescopic spraying assembly, and in the process that the telescopic spraying assembly ascends and descends to drive the purification treatment assembly to ascend and descend synchronously, the purification treatment assembly mixes sewage and a precipitation reagent on one hand and presses precipitation to the position below the water outlet pipe on the other hand. The purification treatment can be circularly carried out, the purification treatment modes are diversified, and the operation is simple and efficient. Layer-by-layer separation of oil stains, suspended solids and precipitates can be realized in each round of purification, the purification effect is good, and the realization of environment-friendly construction of water conservancy projects is facilitated.

The invention discloses a tough underwater superoleophobic gel composite coating and a preparation method thereof.The preparation method specifically comprises the following steps that 1, a base material is soaked in a mixed solution of tannic acid and 3-aminopropyltriethoxysilane, after a period of time, the base material is taken out and soaked in a ferric chloride solution, and a nano-particle modified filter screen is obtained after drying; (2) loading the gel precursor solution on a nanoparticle modified filter screen through a dip-coating method, and preparing a gel composite filter screen under ultraviolet initiation; and (3) soaking the gel composite filter screen in a sodium citrate aqueous solution, and taking out the gel composite filter screen to obtain the tough underwater super-oleophobic gel composite coating modified fishing net. According to the method, the tough underwater super-oleophobic gel composite coating modified fishing net is prepared by adopting an impregnation method and ultraviolet initiation, the preparation process is simple, and the prepared gel composite coating has excellent oil stain resistance, mechanical stability and chemical stability and can be applied to crude oil adhesion prevention and oil-water separation of industrial oily wastewater.

The invention relates to an oil-free digital energy air compression station monitoring system based on an air floating shaft, which comprises a data acquisition module, a communication module, a central processing unit, a monitoring terminal and a control execution module, and is characterized in that the data acquisition module is responsible for acquiring information such as the rotating speed of the air floating shaft, the inlet and outlet pressure and temperature of an air compressor, motor operation parameters and the like in real time; the communication module is used for transmitting the acquired data to the central processing unit; the central processing unit analyzes, processes and stores the received data and generates a corresponding control signal; the monitoring terminal is used for displaying information and receiving an operation instruction; and the control execution module controls the air compression station according to the control signal. According to the system, oil pollution is completely eradicated through an oil-free lubrication air floating shaft technology, and the air quality is guaranteed; accurate monitoring and fault early warning of core components and overall working conditions of the equipment are achieved through intelligent monitoring, and the stability and reliability of the equipment are improved; an operation strategy is intelligently optimized according to actual gas consumption requirements, and energy conservation and consumption reduction are achieved; and remote monitoring and management are supported.