1136 results about "Filter effect" patented technology

The invention discloses position-free control based on a set time sliding mode observer and a time-varying parameter expansion state observer, and belongs to the technical field of permanent magnet synchronous motor sensorless control. The invention provides a composite control method combining a set time sliding-mode observer and a time-varying parameter extended state observer, and aims to solve the problems that the convergence time of a traditional sliding-mode observer depends on an initial state, buffeting is serious, disturbance is sensitive and the like. The method specifically comprises the following steps: designing a sliding-mode observer with a set time convergence characteristic, and ensuring that an observation error is converged in a preset time and is irrelevant to an initial value by dynamically adjusting a sliding-mode surface index item; high-frequency buffeting is suppressed by combining an integral filtering effect; a time-varying parameter expansion state observer is further designed by utilizing the saturation characteristic of a bitangent function and the characteristics of small error, large gain, large error and small gain of a fal function, the initial differential peak value is effectively inhibited, and the total disturbance of the system is compensated in real time. And the advantages of controllable convergence time, small buffeting and high interference resistance are verified through simulation. The anti-interference capability and the dynamic response speed of the system are remarkably improved, and the method is suitable for permanent magnet synchronous motor sensorless control under medium and high speed working conditions.

The invention provides a heat exchanger with an anti-blocking function, which comprises a fixed clamping plate and a movable clamping plate, and a plurality of plate sheets are arranged between the fixed clamping plate and the movable clamping plate. Alternate use of the arc-shaped filter screens is achieved through the rotating design of the second closed barrel, when the filtering effect of a certain filter screen is affected by impurity accumulation, other unblocked filter screens can work in time, it is guaranteed that liquid is continuously and smoothly filtered, the situation that the heat exchange process is interrupted due to blockage of a single filter screen is avoided, and efficient operation of equipment is maintained; the arc-shaped filter screens are backwashed through the spray heads, the four filter screens can be comprehensively cleaned in sequence in cooperation with rotation of the second closed barrel, when deep cleaning is needed, the output shaft of the servo motor rotates clockwise to drive the spray heads to move in a reciprocating mode, more thorough washing is achieved, impurities attached to the filter screens are effectively removed, and the service life of the filter screens is prolonged. The service life of the filter screen is prolonged and the equipment consumable replacement cost is reduced.

The invention provides an image real-time filter processing method based on edge calculation, and the method comprises the steps: obtaining the local texture feature distribution of an input image, calculating the gradient variation of each pixel point in the horizontal and vertical directions, and calculating a quantitative index value reflecting the image texture complexity based on the statistical distribution feature of the gradient variation; executing a parallelized filter effect rendering operation based on the optimized processing task allocation scheme, and applying corresponding filter parameters to each image block through a multi-thread cooperative processing mechanism to form filter rendering configuration information suitable for the performance of the current mobile device; and carrying out fusion reconstruction on brightness, saturation and hue component data after filter processing, generating a final filter processing image through a reverse conversion process from HSV to RGB, and recording parameter configuration information in the processing process at the same time for rapid processing of subsequent similar images.

The invention relates to a film and television filter lamp effect application method and device, equipment and a medium, and the method comprises the steps: obtaining a filter template correspondingly set based on film and television description information, the filter template being used for defining a filter effect applied by a film and television work corresponding to the film and television description information; configuring original lamp effect data of an atmosphere lamp according to the filter template, and obtaining filter lamp effect data applying a filter effect; and controlling an atmosphere lamp to play a corresponding atmosphere lamp effect according to the filter lamp effect data, so that the atmosphere lamp effect presents a filter effect. Through the technical means, the visual style of the movie and television can be copied in batches and presented in real time in an atmosphere lamp system in a low-cost and high-precision manner for the first time, so that immersive experience of the movie, namely the atmosphere, is really realized.

The utility model discloses a multi-cone separation pre-filter which comprises a filter bottle, the upper end of the filter bottle is connected with a valve head, one side of the valve head is provided with a water inlet, the other side of the valve head is provided with a water outlet, the lower end of the filter bottle is provided with a drain outlet, a ball valve is installed in the drain outlet, and a water segregator, a framework, a filter screen and a separation mechanism are installed in the filter bottle. The separation mechanism comprises an inner pipe part and an outer pipe part, an inner water cavity is formed between the inner pipe part and the outer pipe part, a plurality of conical funnels are arranged between the inner pipe part and the outer pipe part, and conical separation cavities are formed in the conical funnels. According to the multi-cone separation pre-filter disclosed by the utility model, the filter screen is combined with the multi-cone separator, double filter systems are perfectly fused, the filter effect is good, the flux is increased, the pollution discharge is clean and thorough, and the multi-cone separation pre-filter can adapt to different environmental water qualities.

The invention provides a noise reduction method and device, equipment and a medium, weighting processing is performed on a first time domain reference noise signal vector to obtain a second time domain reference noise signal vector, a sampling point closer to the current moment is endowed with a higher weight, the noise reduction performance is optimized, and the noise reduction performance is improved by updating a weight coefficient and the second time domain reference noise signal vector. Therefore, the noise cancellation signal is determined on the time domain, filtering on the time domain is realized, the noise cancellation signal is generated to carry out noise reduction processing on the primary noise in the target noise reduction area, extra time delay caused by frequency domain filtering is avoided, noise reduction time delay is reduced, and the filtering effect is improved. The updating process of the weight coefficient is completed in the frequency domain, updating is achieved in the frequency domain with smaller blocks, the calculation amount is reduced, the interval time of noise reduction processing is shortened, the calculation efficiency of the algorithm is improved, the processing delay is reduced, and the noise reduction effect is improved.

The invention relates to the technical field of wireless communication, in particular to a network security communication method and system applied to an unmanned equipment formation and a medium. The method comprises the following steps: firstly, according to a wind speed, a wind direction and a difference condition between an actual spatial position and a set spatial position of unmanned equipment, obtaining a self-noise representation degree at a to-be-analyzed moment; according to the noise interference degree, the initial smoothing coefficient of the to-be-analyzed moment is adjusted, and the adjusted smoothing coefficient of the unmanned equipment at the to-be-analyzed moment is obtained; filtering the actual spatial position by using the adjusted smoothing coefficient at each sampling moment to obtain filtered actual spatial position data; and performing communication transmission based on the filtered actual spatial position data. According to the method, the smoothing coefficient of each sampling moment is reasonably set, and exponential smoothing filtering is performed on the actual spatial position data of the unmanned equipment, so that the filtering effect is improved, the filtering data accuracy in wireless communication is improved, and the wireless communication safety is guaranteed.

The invention relates to the technical field of physiological signal processing, and discloses an anti-interference filtering method and system for a multi-modal physiological signal acquisition device, a terminal and a storage medium, and the method comprises the steps: carrying out the preprocessing of an acquired multi-modal physiological signal; modal recognition and feature extraction are carried out on the preprocessed multi-modal physiological signals; selecting a corresponding filter according to a modal identification result, and dynamically adjusting parameters of the filter; adjusting a filtering path and a filtering sequence based on a cascade filtering structure and a dynamic switching mechanism; adaptive interference estimation and offset are carried out based on crosstalk processing and a reference channel compensation mechanism; and performing parallel filtering according to the extracted features, comparing evaluation parameters of each filtering result based on an output result selection mechanism, and selecting and outputting a final signal according to a comparison result. According to the invention, effective suppression of multi-source interference such as power supply interference, motion artifacts, crosstalk and high-frequency noise is realized, and the real-time performance and stability of the filtering effect are improved.

The utility model discloses a pre-filter and a water consumption system, and relates to the technical field of filters. Wherein the pre-filter comprises a valve head, a filter bottle, a filter assembly, an outer framework and an impeller assembly, the outer framework is rotatably arranged outside the filter assembly in a sleeving manner, and the impeller assembly comprises a mounting seat fixedly mounted in the water filtering cavity and an impeller body rotatably mounted on the mounting seat; the impeller body and the outer framework are coaxially connected and fixed in the circumferential direction, and the mounting base comprises a first water inlet formed in one axial side, a second water inlet formed in the circumferential side and a water outlet formed in the other axial side. The technical scheme provided by the utility model has the technical effects that the filtering effect of the filtering assembly is ensured, and the service life of the pre-filter is prolonged.

The utility model discloses anti-blocking water-based paint filtering equipment, which belongs to the technical field of filtering equipment and comprises a filtering box. The interior of the filter box is rotationally connected with a filter cartridge through a positioning ring, the surface of the filter cartridge is connected with a filter screen through a connecting frame, a flow guide groove is formed in the position, located at the bottom of the inner wall of the filter box, of the lower portion of the filter cartridge, and a discharging opening is formed in the bottom end of the flow guide groove; the fixing frame is mounted at one end of the filter box, and a driving motor for rotating the filter cartridge is mounted on the surface of the fixing frame; the assembling groove is formed in the end of the filtering box, a sealing baffle is detachably assembled in the assembling groove, and a feeding hopper is arranged on the surface of the sealing baffle; according to the paint filtering device, the filtering area can be effectively increased, the filtering effect can be improved, meanwhile, the filtering structure can be turned over, the situation of blockage during paint filtering is greatly reduced, and the workload of repeatedly replacing a filtering net by workers is reduced.

The invention relates to the technical field of electromagnetic compatibility, in particular to a new energy automobile electronic part EMC (Electro Magnetic Compatibility) multi-dimensional simulation verification method, which comprises the following steps of: based on a geometric structure and material attributes of a new energy automobile electronic part, identifying an abnormal field intensity region, extracting a signal path and an electromagnetic wave incident direction, and analyzing an overlapping relationship between the signal path and the electromagnetic wave incident direction; according to the method, the electromagnetic field distribution and the interference source of the parts are accurately modeled and analyzed, the shielding and filtering design is optimized, the electromagnetic compatibility is improved, the interference coupling point is identified, the shielding effectiveness and the filtering effect are evaluated, the optimization policy is identified, the electromagnetic field distribution after optimization is analyzed, the fluctuation data of the external electromagnetic field is captured, and the influence evaluation list of the external electromagnetic field is generated. The reliability of the design under actual working conditions is ensured, electromagnetic interference is prevented, stable work of parts in a variable electromagnetic environment is ensured, the electromagnetic compatibility of the whole automobile is improved, the influence of electromagnetic interference on the functions of the new energy automobile is reduced, the design effect is optimized, and the performance and safety are improved.

The utility model relates to the technical field of cleaning, in particular to cleaning equipment which comprises a main shell and a cover plate device, and the cover plate device is movably mounted on the main shell so as to seal or open an opening of the main shell, so that a filter part can be loaded into or moved out of a containing cavity from the opening; the cover plate device comprises a cover plate and a display assembly, and the display assembly is installed on the side, away from the containing cavity in the first direction, of the cover plate. According to the display device, the display assembly is arranged outside the containing cavity, so that the containing cavity has a larger space for containing the filtering piece, the size of the filtering piece can be as large as possible, airflow exhausted to the outside from the containing cavity through the air outlet can be fully filtered by the filtering piece, and the filtering effect of the filtering piece is good; through the arrangement, a user can conveniently and clearly see the display assembly and know the current state of the cleaning equipment in time.

The invention discloses an operation and maintenance method, device and equipment for filtering and separating equipment and a readable storage medium, belongs to the field of gas filtering, and aims to consider that related sensing data of a filter cartridge can reflect the residual life of the filter cartridge, so that a filter cartridge life prediction model is pre-trained, and then in the operation process of the filtering and separating equipment, the residual life of the filter cartridge is predicted. A real-time sensing data set (including at least one of temperature and humidity data of the filter cartridge, a pressure difference value of the surface of the filter cartridge, particle concentration of an inlet and an outlet of the filter cartridge and flow of the outlet of the filter cartridge) is obtained through a preset sensor group, and then the real-time sensing data set is input into a pre-trained filter cartridge service life prediction model to obtain a residual service life prediction value of the filter cartridge. And the prompter is controlled to prompt the residual life prediction value, so that the condition that the filter cartridge is poor in state and short in service life can be found in time and replaced in time, the filtering and separating equipment is prevented from running under the condition that the filter cartridge is poor in state, the filtering effect is guaranteed, and damage to rear-end equipment is avoided.

The invention relates to the technical field of sealing performance detection, in particular to a pressure vessel-oriented leakage detection method, device and system, and the method comprises the steps: respectively obtaining the acoustic emission signals of each detection sensor on the outer wall surface of a pressure vessel and a guard sensor right above the detection sensor, and the liquid level height at each moment; judging the appearing acoustic emission event; obtaining each event set and a noise interference degree corresponding to the event set, and dividing the event sets into a noise event set and a non-noise event set; and determining a sound source estimation value and a liquid drop estimation value to obtain a modal decomposition layer number, performing signal reconstruction on all modal components corresponding to non-noise through modal decomposition, and positioning the leakage position of the pressure vessel. According to the method, the number of decomposition layers of the modal decomposition algorithm is dynamically adjusted, insufficient decomposition or excessive decomposition of the mode of the acoustic emission signal is avoided, the filtering effect on the acoustic emission signal is improved, and the leakage point of the pressure vessel can be positioned more accurately.

The invention relates to the technical field of reverse osmosis filtration, and discloses a reverse osmosis membrane filter element assembly and a use method thereof.The reverse osmosis membrane filter element assembly comprises two annular plates, a hollow cylinder is rotationally connected between the two annular plates, a motor is fixedly connected to the top of the upper annular plate, and the motor drives a large gear to rotate through a small gear on a first rotating shaft; the large gear drives the hollow cylinder to rotate, the hollow cylinder drives the first filter screen and the fixing plate to rotate when rotating, and the second filter screen slides in the sliding groove to extrude the spring to generate elastic force, so that the first filter screen and the second filter screen are staggered, the size of a filter screen opening is reduced, large particles in water are blocked in the first filter screen, and the filtering effect is achieved; when the hollow cylinder stops rotating, the filter screen II resets under the action of the elastic force of the spring, so that the filter screen openings are aligned, particles in the filter openings are thrown out under the action of inertia force, and filtered water flows into the next process through the water outlet, so that impurities are prevented from flowing out from the filter openings, and the filtering effect is improved.

The invention discloses a distributed MIMO (Multiple Input Multiple Output) integrated system and method based on a reconfigurable notch chaotic optoelectronic oscillator, belongs to the field of microwave photons, and solves the problems of spectrum resource conflict, difficulty in multi-node synchronization, discrete inductance functions and the like. According to the system, a plurality of independent chaotic OEOs are combined with an optical frequency comb to drive an FIR filtering effect, MIMO chaotic signals with reconfigurable notch frequency points and quantity are generated, and dynamic allocation of spectrum resources is realized. The notch frequency band is used as a communication channel embedded modulation signal, and supports multi-spectrum sharing with 2.4 G, 5G, Wi-Fi and the like; a non-notch frequency band is reserved as a radar signal, and the range resolution is improved by using the broadband characteristic of the chaotic waveform. The star topology optical network expands the coverage area of a distributed system, and a centralized processing architecture reduces the complexity of multi-node collaboration. The invention provides an integrated solution of high-precision environment perception and high-reliability communication for smart cities, Internet of Vehicles and the like, and is suitable for dense urban areas with resource shortage and dynamic multi-service environments.

The invention discloses an unbalanced load compensation method for a three-phase four-wire three-level converter. According to the method, a three-phase four-wire system three-level converter bridge arm voltage mathematical model is established based on sine carrier in-phase laminated modulation, and harmonic content analysis is completed; an SOGI-pro module is established (an error integration link is added at the input front end of a D axis of an SOGI filter, and D and Q axis second-order band-pass filters are transformed into third-order band-pass filters), so that the positive and negative sequence separation precision of three-phase unbalanced load voltage is improved. According to the method, the order of the SOGI filter is improved by reasonably designing a closed-loop transfer function, and the filtering effect of the SOGI filter in high and low frequency bands is enhanced. And a sequence-dividing imbalance compensation control loop is designed based on the three-sequence dq0 coordinate system, so that zero-static-error tracking of a positive-sequence fundamental component and powerful suppression of negative-sequence and zero-sequence imbalance components are realized. According to the invention, the accuracy of traditional positive and negative sequence separation is improved, so that the unbalanced load compensation effect under sequence separation control can be improved.

The invention relates to the technical field of centrifugal machine control, in particular to a lower discharging centrifugal machine control method and system based on a PLC, and the method comprises the steps: obtaining a flow time sequence and a concentration time sequence of a material at a feeding valve in a feeding stage, and a power time sequence of a main motor of a centrifugal machine; obtaining a first characteristic value and a second characteristic value of the control moment by combining a correlation and an average trend of a flow time sequence and a concentration time sequence in a change trend in a time range corresponding to any control moment and a previous control moment, and a periodic fluctuation characteristic of a power time sequence; and a proportion parameter value is obtained by combining the first characteristic value and the second characteristic value, so that the rotating speed of a main motor of the lower discharging centrifugal machine is controlled at the corresponding control moment. The control effect on the main motor of the lower discharging centrifugal machine is improved, and therefore the filtering effect on materials is improved.

The utility model relates to the technical field of drying filters, in particular to a bidirectional energy-saving refrigerating system drying filter which comprises a shell, a mounting block fixedly connected to the surface of the shell, a sealing cover screwed to the surface of the shell, an electromagnetic vibrator fixedly connected to the surface of the shell, and a storage cylinder fixedly connected to an inner cavity of the shell. The surface of the storage barrel is in lap joint with a baffle, the surface of the baffle is fixedly connected with a filter screen, the two ends of the surface of the baffle are slidably connected with limiting blocks, the limiting blocks abut against the surface of the storage barrel to brake the baffle, and the surface of the baffle is rotationally connected with a hammer block; the dryer has the beneficial effects that the shell and the sealing cover are in threaded connection, the interior of the dryer can be detached and overhauled in time, an electromagnetic vibrator and a hammer block are arranged, the surface of a filter screen can be knocked, blockage caused by attachments on the surface of the filter screen is reduced, the filtering effect and liquidity of the filter screen are improved, and the filter screen and a baffle are detachable; the cleaning and maintenance efficiency of the filter screen is improved, and the maintenance cost and time are reduced.

The invention relates to the technical field of textile equipment testing, in particular to a yarn textile high-speed spindle operation stability testing method and system, and the method comprises the following steps: S1, testing element layout; s2, initializing the system; s3, carrying out transient test; s4, testing a steady state; s5, interference processing: carrying out spectrum analysis on the originally acquired data, identifying interference frequency characteristics, eliminating interference by adopting a notch filtering and Kalman filtering combined method, and verifying a filtering effect; s6, parameter correlation modeling: constructing a vibration-temperature-tension-rotating speed parameter correlation model by adopting a control variable method, solving model parameters through a fitting algorithm and verifying validity; s7, quality tracing; s8, stability judgment; and S9, performing real-time monitoring and regulation. According to the method, a combined filtering scheme of notch filtering and Kalman filtering is adopted, fixed interference and random interference such as power frequency and mechanical resonance are suppressed in a targeted manner, and through comparison of locally amplified signals, the filtered signals are smooth in waveform and thorough in noise removal, and the signal-to-noise ratio and reliability of vibration detection signals are improved.

The invention discloses an image processing method and device, electronic equipment and a readable storage medium. The method comprises the steps that first input is received; the first input indicates that a filter effect of a reference image is applied to a to-be-processed image; in response to the first input, determining each image element of the to-be-processed image and each image element of the reference image; and according to the image element category and the image color feature of each image element of the to-be-processed image and the image element category and the image color feature of each image element of the reference image, performing filter alignment processing on the to-be-processed image.

The invention is suitable for the technical field of centrifugal vacuum pumps, and provides an energy-saving anti-blocking centrifugal pump which comprises a centrifugal vacuum pump body. A filtering part is arranged at the exhaust end of the centrifugal vacuum pump body; the filtering part comprises a fixed part, a lifting part and a retainer; the fixing piece is in sliding fit with the lifting piece; the retainer is rotationally arranged between the fixed part and the lifting part; the air inlet pipe, the air outlet pipe, the upper U-shaped pipe, the lower U-shaped pipe and the storage pipe are sequentially connected in a staggered mode to form a serpentine channel. According to the device, the retainer is controlled to rotate between the fixed part and the lifting part, the flue gas entering path is adjusted, so that each group of columnar activated carbon can be in direct contact with the flue gas, the replacement frequency of the columnar activated carbon is reduced, waste is reduced, cost is saved, a traditional structure arrangement of a multi-layer filter element plate is replaced, and the practicability is high. The occupied space is reduced, meanwhile, the contact path of the flue gas and the columnar activated carbon is prolonged, and the filtering effect is improved.

The invention relates to an analog-to-digital converter of an embedded filter, a driving chip and electronic equipment, and the analog-to-digital converter comprises a first analog-to-digital conversion module which is a successive approximation type analog-to-digital converter with a plurality of sampling capacitors and a plurality of sampling periods, the first analog-to-digital conversion module realizes a finite impulse response (FIR) filtering effect on an input sampling signal through charge sharing among sampling capacitors; and while part of the sampling capacitors still perform the process of sampling the input signals, the successive approximation quantization process of the signals on part of the sampling capacitors which have already been sampled is started. The analog-to-digital converter provided by the embodiment of the invention has a filtering characteristic and also has the characteristics of high bandwidth, low power consumption and small area.

The utility model relates to the technical field of machining, in particular to a filtering system and machine tool equipment. The filtering system comprises a chip removal device, a filtering device and a cooling device, the chip removal device is used for receiving cutting fluid discharged by the machine tool and comprises a first filtering mechanism, the first filtering mechanism comprises a plurality of filtering pieces arranged at intervals, the section of each filtering piece is in an inverted triangle shape, and the filtering pieces are used for conducting primary filtering on the cutting fluid; the filtering device is used for receiving the cutting fluid filtered by the filtering part and carrying out secondary filtering on the cutting fluid, and the cooling device is used for cooling the cutting fluid filtered by the filtering device, so that the filtering effect and the filtering precision of the cutting fluid are improved, the cutting fluid meets the cyclic utilization condition, and the production cost is reduced. By applying the filtering system to the machine tool equipment, the filtering effect and the filtering precision of the cutting fluid are improved, and the production cost is reduced.

The invention relates to the technical field of data center energy storage, and discloses a data center flywheel energy storage system and method based on an LCL filter, and the method comprises the steps: collecting a power grid side current signal, decomposing a harmonic component, and dynamically adjusting the parameters of the LCL filter to suppress harmonic waves; determining and executing a charging and discharging control strategy according to the direct-current bus voltage and the flywheel rotating speed; flywheel vibration and acceleration are monitored in real time, operation stability is evaluated, and a control strategy is corrected; and the harmonic suppression effect is optimized by combining rotating speed feedback and voltage data compensation filter parameters. The system comprises a harmonic suppression module, a charge and discharge control module, a stability evaluation module and a filtering parameter optimization module. Through multi-parameter dynamic adjustment and multi-module cooperative control, composite suppression of power grid harmonics and accurate adjustment of the flywheel energy storage state are achieved, the system operation stability and the filtering effect are improved, and the method is suitable for a data center energy storage scene.

The invention relates to an anti-interference high-selectivity omnidirectional planar filtering antenna, a filtering processing method and application, and the planar filtering antenna comprises a metal radiation layer, a first dielectric substrate, a first coupling layer, a second dielectric substrate and a second coupling layer which are sequentially stacked. The second dielectric substrate is provided with a plurality of metalized through holes which are distributed in an annular array mode and define a substrate integrated cavity with the first coupling layer and the second coupling layer, the metalized through holes divide the second coupling layer into an inner side patch and an outer side ring piece, and the inner side patch is evenly provided with a plurality of resonance grooves; and a feed probe penetrating and extending to the second dielectric substrate is arranged at the center of the bottom of the metal radiation layer. According to the invention, the substrate integrated waveguide technology is adopted, the substrate integrated cavity is formed, and a high-selectivity filtering effect is realized by utilizing the characteristic of high Q value, so that the interference of out-of-band signals is effectively inhibited, and the advantages of the patch antenna and the substrate integrated cavity are effectively combined.

The utility model discloses a silicon carbide polishing solution filtering device, which relates to the technical field of filtering equipment and comprises an outer shell and a liquid outlet pipe, the liquid outlet pipe is arranged on one side of the outer shell, an upper shell is arranged above the outer shell, and a liquid inlet is arranged on one side of the upper shell. According to the silicon carbide polishing solution filtering device, the filter screen is mounted in the shell, the top end of the filter screen is in bolt connection with the concave plate of the shell through bolts, and the bottom of the filter screen is in clamping connection with the limiting piece in a rotary clamping mode, so that the filter screen can be quickly mounted and dismounted; the filter screens are fixedly connected through bolts, so that the filter screens can be conveniently disassembled and assembled, and the pore diameters of the filter screens are gradually reduced from top to bottom, so that when a solution passes through the filter screens with different pore diameters, the filter screens with different pore diameters can block impurities with different particle sizes, the filtering effect can be improved, and the purity of the polishing solution can be improved.

The invention relates to the technical field of oil seal detection, in particular to an oil seal oil return line height detection method, which comprises the following steps: acquiring all point cloud data on an oil seal inner ring; constructing a cylinder corresponding to the oil seal, and dividing the bottom surface of the cylinder into a plurality of fan-shaped blocks; calculating an axis distance; calculating a deformation characterization value of each fan-shaped block; determining the local concentration degree of each point cloud data; determining a discrimination coefficient of each point cloud data, and obtaining the point cloud data corresponding to the oil return line; clustering all the point cloud data corresponding to the oil return line, and determining an adjustment coefficient of each point cloud data corresponding to the oil return line; and determining the filtering scale of each point cloud data corresponding to the oil return line, performing filtering by combining a filtering algorithm, performing three-dimensional reconstruction on all the filtered point cloud data, and measuring the height of the oil return line of the oil seal. According to the invention, the appropriate filtering scale of the filtering algorithm is dynamically selected, the filtering effect is enhanced, and the accuracy of oil seal oil return line height detection is improved.

The utility model relates to the technical field of coating processing, and discloses a multistage filtering device for primer processing, which comprises a filtering box, a coarse sieve plate is fixedly mounted on the inner wall of the filtering box, a fine sieve plate is slidably connected to the inner wall of the filtering box, the fine sieve plate penetrates through the filtering box, and the coarse sieve plate is fixedly connected with the coarse sieve plate. According to the multi-stage filtering device for primer processing, a motor is started to drive a rotating shaft to rotate, meanwhile, a scraping plate is matched to dredge a coarse screen plate and scatter materials, meanwhile, a driving mechanism is used for driving a fine screen plate to shake in a reciprocating mode so as to improve the material filtering effect, and the filtering effect is improved. The rotating rod can be driven to rotate in a reciprocating mode to evenly stir materials, the purposes of scattering the materials, dredging meshes, improving the filtering effect and evenly stirring the materials can be achieved through one motor, the manufacturing cost of equipment is reduced, and electric power resources are saved.

The invention relates to the technical field of filtering equipment, and discloses large-flow filtering equipment which comprises a filtering box and a backflow box, a filtering piece with a filtering effect is installed in the filtering box, and a cleaning piece used for cleaning the filtering piece is installed at one end in the filtering box. Compared with the prior art, the filtering device has the beneficial effects that multiple self-cleaning of the blocking filter screen is achieved in the filtering process, the permeability of the blocking filter screen is guaranteed, the filtering effect is improved, the filtering effect is improved, and the filtering effect is improved. The operation of the filtering equipment is guaranteed, the operation time of the filtering equipment is prolonged, the operation efficiency of the filtering equipment is guaranteed, when the impurities are many, the impurities can be collected and treated through the impact force of water flow, the filtering equipment does not need to be stopped, the operation of the filtering equipment is guaranteed, the labor intensity of workers is not needed, and the labor intensity of the workers is reduced.