40results about How to "Improve passing efficiency" patented technology

The invention discloses an intelligent automobile path tracking system for urgent danger avoidance, and particularly relates to the technical field of intelligent automobiles, the system comprises an environment sensing module, the output end of the environment sensing module is connected with a danger assessment module, and the output end of the danger assessment module is connected with a path planning module. The output end of the path planning module is connected with a decision planning module, the output end of the decision planning module is connected with a vehicle control module, and the output end of the vehicle control module is connected with a communication and interaction module. Through cooperative work of all the modules, perception of the surrounding environment of the vehicle, danger assessment, path planning, decision making, vehicle control and communication interaction with the outside are achieved, under the dangerous condition, the system can make a response rapidly, effective danger avoiding measures are taken, the driving safety of the vehicle and the accuracy of path tracking are ensured, and the driving safety of the vehicle is improved. And a comprehensive and reliable guarantee is provided for safe driving of the intelligent automobile.

The invention belongs to the technical field of sewage purification treatment equipment, and particularly relates to a sewage purification treatment device and method. An outer barrel is arranged in the barrel body, the outer barrel is formed by sequentially combining an upper barrel, a middle barrel and a lower barrel, the top of the barrel body is rotationally connected with the upper barrel through a first circular groove, the upper barrel is fixedly connected with the middle barrel, the middle barrel is rotationally connected with the lower barrel, a power shaft is rotationally connected into the upper barrel, and the lower barrel is fixedly connected with the inner wall of the barrel body; the power shaft, the upper cylinder and the middle cylinder rotate reversely through the power part, sewage enters the smashing gear ring through the water inlet pipe to smash impurities and then enters the filter screen, the power shaft drives the lifting conical ring to ascend and descend, the filter screen rotates and has anti-blocking and backwashing functions on the filter screen, blockage of the filter screen is avoided, the sewage and the impurities are layered due to centrifugal force, and different layers of filter screens filter different impurities according to the centrifugal force. The separation efficiency of impurities in sewage is improved.

The invention belongs to the technical field of plant cultivation and seedling raising, and particularly relates to a sand plant cultivation and seedling raising device which comprises a greenhouse body and a seedling raising bed, a U-shaped water receiving tank is fixedly mounted at the top of the outer side wall of the greenhouse body, and the bottom of the U-shaped water receiving tank is communicated with a water leakage pipe; a self-cleaning rainwater rough filtration mechanism is fixedly mounted on the outer side wall of the greenhouse main body, and a water and fertilizer integrated irrigation mechanism is fixedly arranged in the greenhouse main body; through an efficient rainwater collecting and filtering system and water and fertilizer integrated control, the utilization efficiency of water resources and fertilizers is improved, the self-cleaning function is achieved, blockage of a coarse filter screen is avoided, it is ensured that the rainwater collecting efficiency is stable, regular cleaning by personnel is not needed, and the labor cost is saved; extra energy consumption is not needed, the energy consumption is reduced, automatic mixing of the fertilizer and water can be realized, and the water and fertilizer integration efficiency is improved.

The invention belongs to the technical field of battery materials, and particularly relates to a modified high-nickel ternary positive electrode material and a preparation method and application thereof. The preparation method of the modified high-nickel ternary positive electrode material provided by the invention comprises the following steps: 1) mixing a lithium source, a precursor, a tellurium source and a divalent metal compound, and performing first calcination to obtain a first calcined product; (2) dissolving tellurate in an organic solvent, mixing and grinding the formed tellurate organic solvent solution and the first burning product obtained in the step (1), and then carrying out second burning to obtain a second burning product; the tellurate is selected from at least one of potassium tellurite and sodium tellurite; and (3) washing the secondary calcined product obtained in the step (2) with water, mixing with boric acid, and carrying out third calcination to obtain the modified high-nickel ternary positive electrode material. Through the specific preparation method and the synergistic effect among the steps, the obtained modified high-nickel ternary positive electrode material has good specific capacity, first effect and cycle performance.

The embodiment of the invention discloses a palm vein information acquisition system, method and device, and the method comprises the steps: collecting palm vein image data through an image collector, obtaining the biological parameter information of the palm vein image data through an image recognition module, and determining whether the palm vein image data is abnormal or not according to the biological parameter information; and when the palm vein image data is normal, identifying the palm vein image data to obtain a palm region, performing alignment processing on the palm region, extracting palm vein vector feature information of the palm region, sending the palm vein vector feature information to the server, pre-processing the received palm vein vector feature information by the server, and matching a target search result, according to the embodiment of the invention, the collected palm vein image data is processed, so that the output of the palm vein image can be enhanced, the subsequent detection of the palm vein image data can be facilitated, the judgment type of the palm vein state can be expanded, the requirement for placing the palm of an identifier during passing is reduced, and the passing efficiency is improved.

The utility model relates to the technical field of centrifugal pump volutes, and discloses a centrifugal pump volute capable of improving the efficiency of a water pump, which comprises a volute body and a baffle tongue, and a stabilizing component is arranged on the inner wall of the volute body. According to the centrifugal pump volute capable of improving the efficiency of the water pump, the baffle and the partition tongue divide the interior of the volute body into three volute chambers, the effect of balancing radial force is achieved, meanwhile, the side wall of the flow guide block is fixedly connected with the flow guide block, the flow guide block is arranged on the side wall of the baffle in a spindle shape, and the width, away from the circle center direction of the volute body, of the baffle is widened; after an impeller of the centrifugal pump passes through the protruding block, a low-pressure area is formed near the protruding block, water flow suction is achieved, the water flow speed is increased, and then the water flow passing efficiency in a pump body is improved. And disordered flow and even reverse flow of water flow in the volute body when the water flow is too small are avoided.

The invention discloses a conveying line and a conveying method based on battery unpacking, distributing and drying, and relates to the field of conveying, the conveying line comprises a conveying belt and a drying box, and the conveying belt penetrates through the drying box; a drying assembly is arranged in the drying box and comprises a driving unit and a plurality of drying units, the driving unit comprises a driving belt, the driving belt can drive the drying units to move circularly, each drying unit comprises a drying cover, a drying air pump and an exhaust pipe, and the driving belt can drive the drying cover to abut against the conveying belt; at the moment, the drying cover and the conveying belt are sealed, and the drying air pump is arranged in the drying cover. The drying cover can move to abut against the conveying belt and be sealed, internal materials are dried while the drying cover and the conveying belt move synchronously, harmful gas generated in the drying process is exhausted through the exhaust pipe, diffusion of the harmful gas can be prevented, the sealing problem in the continuous conveying and drying process of the materials is solved, and the harmful gas cannot pollute the atmosphere; and the safety is improved.

The application discloses a reconstruction method of a vertical slot fishway into a movable baffle fishway, which comprises the following steps: a) extending the fish inlet downstream; b) reconstructing the fish outlet into a transversely opening gate; and c) adding an automatically controlled energy dissipation baffle between pool rooms; when the defects of the original fishway are caused by the change of the upstream and downstream water levels, the steps of a) and b) need to be performed; when the defects of the original fishway are caused by the emergence of new low-swimming-speed fish species, the step of c) is performed; and when the original fishway has both of the above problems, the steps of a), b) and c) are simultaneously performed. The application has the advantages that the reconstruction method of the vertical slot fishway is provided; the reconstruction design method and the new body type of the fishway outlet; the reconstruction method of the fishway inlet; and the above method and body type have important effects on the improvement of the fish passing efficiency.

The invention provides an ETC lane vehicle backing-up automatic identification and disposal method and system, and the method comprises the steps: receiving a vehicle detection signal from a vehicle detector, detecting a backing-up vehicle based on the time sequence of vehicle existence and no vehicle signal change through vehicle detection, and automatically identifying the backing-up vehicle through an ETC system; for the automatically identified reversing vehicles, reading the transaction states of the automatically identified reversing vehicles, and modifying the vehicle queue for the reversing vehicles in different transaction states according to a preset flow rule; wherein the transaction state comprises transaction success, transaction failure and no transaction label. According to the invention, the vehicle going out of the ETC lane can be accurately positioned, and the vehicle queue can be automatically processed and corrected. The vehicle passing efficiency of the highway ETC lane is effectively improved, and the traffic jam of the lane is avoided.

The utility model discloses a novel filter cellular board which comprises a filter board main body which is integrally in a disc shape, a plurality of through discharge holes are formed in the filter board main body, the center line of one discharge hole coincides with the center line of the filter board main body, and the centers of the other discharge holes are uniformly arranged on a plurality of concentric circles which take the center of the filter board main body as the circle center. And the center connecting lines of the discharge holes on the concentric circles extending outwards from the center of the filter plate main body are distributed in a circular arc shape. The filter is scientific in principle and simple and compact in structure, the structural strength is improved, the filtering area is increased, the material passing efficiency is improved, and the quality of filtered materials is also greatly improved.

The present invention provides a high-strength air flow distribution plate and a desulfurization tower, comprising: a base plate, on which a plurality of air holes are provided; a reinforcement structure, which is provided on the base plate and protrudes outward relative to the base plate. The outwardly protruding reinforcement structure can improve the strength of the air flow distribution plate itself, and can also increase the surface area of ​​the air flow distribution plate, increase the opening area, and improve the efficiency of flue gas passage. The air flow distribution plate is usually located below a wet dust removal mechanism, and performs flow equalization treatment on the flue gas before the flue gas is wet dust removed. The air flow distribution plate with a reinforcement structure has a larger area for receiving spraying due to the relatively outward protrusion of the reinforcement structure, and more spray liquid adheres to the air flow distribution plate, which increases the contact area and contact efficiency between the spray liquid and the flue gas, thereby enhancing the effect of wet dust removal.

The utility model discloses industrial wastewater filtering equipment and belongs to the field of filtering equipment. The device comprises a filter tank, a grating mechanism, a waste box, a longitudinal compression mechanism and a transverse compression mechanism. The grating mechanism is arranged in the filter tank and is used for conveying waste materials in the wastewater. The waste box is fixedly arranged at the upper end of the filter tank and below a discharge hole of the grating mechanism and is used for collecting waste. The longitudinal compression mechanism is arranged in the filter tank and is used for extruding the waste materials from the upper side and the lower side; the longitudinal compression mechanism comprises a driving part; an upper pressing plate is arranged on the driving piece; the upper pressing plate is driven by a driving part to move up and down; and a lower pressing plate fixedly connected to the bottom of the filter tank is arranged under the upper pressing plate. Through mutual cooperation of the vertical compression mechanism and the transverse compression mechanism, waste materials can be extruded in the transverse direction and the longitudinal direction respectively, the waste materials are made to be in a compact long strip shape, accumulation and winding of the loose waste materials on a chain belt are reduced, and the risk that the chain belt is blocked is reduced.

The utility model discloses a kind of outer convex wall low wind resistance flexible air pipe, comprising: pipe outer layer, pipe inner layer and elastic spiral silk;Pipe outer layer is pressure combined with pipe inner layer, and elastic spiral silk is wound and is held in pipe inner layer outside, the inside wall of pipe inner layer is smooth surface;Pipe outer layer is protruded in the direction of outside wall on the part of being wrapped in elastic spiral silk, and the wall thickness portion of its bending section is bent and protruded in pipe outside direction when pipe is bent.The inside wall of the utility model is smooth surface from beginning to end, without concave portion, and the size of its inner tube diameter is always unchanged when bending, so wind resistance in pipe does not increase;Compared with the problem that the pipe diameter of previous conventional hose is reduced when bending, thereby leading to wind resistance increase and fluid passing efficiency reduction, the wind resistance of the utility model is lower, beneficial to improve the flow rate of fluid, and the efficiency of fluid passing is significantly improved, and the pipe also has the characteristics of clean and dust-free, which brings good improvement to the exhaust effect of equipment.

This utility model relates to the field of putty powder sampling and testing technology, and discloses a putty powder sampling and testing device, including a testing tank, which is fixedly installed on the top of a support. A sieve plate is fixedly installed on the inner wall of the testing tank, and a fixing plate is fixedly installed on the inner wall of the testing tank. The testing tank is fixedly connected to one end of a conveying pipe. This putty powder sampling and testing device is equipped with a control component. When the output shaft of the motor drives the round rod and the plate to rotate, the sliding rod in the plate surface can move downward within the plate when it abuts the surface of the protrusion. When the sliding rod moves, the tapping plate fixed at the bottom of the sliding rod can tap the surface of the sieve plate. The movable rod hinged to the surface of the sliding rod can be folded to push the vertical rod and the support rod to slide on the surface of the sieve plate, thereby accelerating the passage efficiency of dry putty powder on the surface of the sieve plate and avoiding the situation where dry powder cannot be separated and tested due to accumulation.

The utility model relates to the field of conveying belts, in particular to a cooling tank double-layer conveying belt which comprises a shell, a set of first conveying rollers and a set of second conveying rollers are sequentially and rotationally connected in the shell from top to bottom, the two first conveying rollers are connected through a first net-shaped conveying belt, and the second conveying rollers are connected through a second net-shaped conveying belt. The multiple second conveying rollers are connected through a second net-shaped conveying belt, the upper end and the lower end of the second net-shaped conveying belt are fixedly connected with multiple partition plates, and the output shaft end of a second motor is fixedly connected with the second conveying roller located at the left end; a plurality of first cooling assemblies are installed at the front end and the rear end of the shell, a fixing frame is fixedly connected to the top end of the shell, and a second cooling assembly is installed in the fixing frame. According to the material cooling device, materials can be cooled while being conveyed by the first net-shaped conveying belt and the second net-shaped conveying belt, so that the materials are cooled in the conveying process, the material cooling time can be saved, and the material cooling device is more convenient to use.

The utility model provides a central tube assembly, cylindrical battery and electric equipment, the central tube assembly comprises a central tube and a collector plate connected to one end of the central tube, the central tube is used for being inserted in a central hole of a pole group in the cylindrical battery, and the collector plate is used for being connected with a tab of the pole group. According to the central tube assembly disclosed by the utility model, the central tube is inserted into the central hole of the pole group, so that a supporting effect can be achieved, the problem that the central hole is easy to collapse can be prevented, and the assembling efficiency of a cylindrical battery can be improved by connecting the two current collecting discs to one end of the central tube.

This utility model relates to a stress test board assembly and a testing machine. The stress test board assembly includes: a board body; a heating element disposed on the board body; a heat sink disposed on one side of the board body; and a windproof structure including a first windproof plate and a second windproof plate connected to each other. The first windproof plate is disposed on the side of the heat sink away from the board body, and the second windproof plate extends obliquely from one end of the first windproof plate toward the side away from the board body. The end of the second windproof plate away from the first windproof plate forms an air inlet for the fan with the board body. The second windproof plate can guide as much air blown by the fan as possible through the air inlet into the air duct formed by the windproof structure and the board body, increasing the air volume passing through the heat sink. The first windproof plate can reduce the air volume leakage, thereby improving the heat dissipation effect and efficiency of the heat sink on the heating element and the board body. The windproof structure can also prevent dust contamination of the heat sink, heating element, and board body, extending the service life of the stress test board assembly.

The utility model provides a numerical control grinding machine cooling water scrap iron filtering device, which relates to the technical field of numerical control grinding machine cooling water recycling, and comprises a water inlet cavity, a filtering cavity, a water inlet port, a water outlet port, a partition plate, a flow guide plate, a rotating shaft, an adsorption roller, a through groove and a material guide plate which are communicated with one another, the upper end of the material guiding plate abuts against the outer surface of the adsorption roller, a mounting frame is arranged on the outer surface of the filtering cavity, a motor is arranged on the mounting frame, chain wheels are arranged at the output end of the motor and one end of the rotating shaft correspondingly, and the two chain wheels are in transmission through a chain. Impurities such as iron chips capable of being magnetically attracted in cooling water can be continuously and magnetically attracted out, meanwhile, the magnetically attracted impurities are continuously cleaned out through a material guide plate, it is avoided that a large number of impurities are adsorbed to the surface of the adsorption roller, the adsorption roller has the good adsorption capacity and adsorption effect, and the service life of the adsorption roller is prolonged. The cooling water is ensured to have good passing efficiency, and the use effect is good.

The utility model discloses a titanium-aluminum alloy light-weight turbine blade of an aero-engine, and relates to the technical field of aero-engines. The titanium-aluminum alloy light-weight aero-engine turbine blade comprises a margin plate, and an air guide mechanism and an installation tenon mechanism are arranged on the outer wall of the margin plate. The air guide mechanism has the technical effects that the air guide plates and the air guide blades arranged on the outer walls of the air guide plates are matched with the air guide grooves and the air guide slopes of the air guide grooves, so that high-speed airflow entering the aero-engine can be guided and shunted, the airflow flowing path is optimized, airflow resistance and turbulent flow are reduced, and the airflow passing efficiency is improved; and meanwhile, the reinforcing frame is located in the inner cavity of the air guide plate, makes contact with the inner wall of the cavity and is fixedly connected with the inner side face of the mounting cover, and the dead weight of the air guide plate can be effectively reduced.

The utility model provides a face recognition channel gate, and relates to the field of gates. The face recognition channel gate machine comprises a gate machine body, opening and closing doors are symmetrically and rotatably connected to the interior of the gate machine body, a face recognizer is rotatably connected to the top of the gate machine body, a recognition mechanism is arranged at the top of the gate machine body, and the recognition mechanism comprises an adjusting assembly and a fixing assembly. The end, away from the human face recognizer, of the threaded rod extends into the rotating groove, and the fixed rod is connected with a rotating wheel, through the arranged adjusting assembly, the recognition angle of the human face recognizer can be adjusted, the situation that recognition cannot be conducted or recognition is slow due to sunlight irradiation is avoided, the passing efficiency of pedestrians is improved, and through the arranged fixing assembly, the recognition angle of the human face recognizer can be adjusted. A user can directly insert an identity card into the identification groove, the situation that the identity card deviates from an identification area is avoided, the identity card can be accurately and rapidly identified, the structure is simple, and practicability is high.

The invention discloses a novel trouser waist belt threading machine, comprising a machine body, a side wall of the machine body connected to a mounting box 1, the mounting box 1 connected to a combined box body, the machine body is provided with a wire outlet hole below the mounting box 1, the combined box body is composed of a vertically arranged mounting box 2 and a mounting box 3, a driving motor is arranged in the mounting box 1, the driving motor is connected to a transmission shaft 1 through a coupling, a bearing seat 1 is passed through the other end of the rotating shaft 1, the transmission shaft 1 is connected to a driving bevel gear, a four-way transmission bevel gear adapted to the driving bevel gear is arranged in the center of the mounting box 2, four transmission bevel gears adapted to the four-way transmission bevel gear are arranged around, each transmission bevel gear is connected to a transmission shaft 2, the transmission shaft 2 is passed through a bearing seat 2, and the other end of the transmission shaft 2 is connected to a transmission pulley. In the invention, within a limited space, the effective stroke of a single extension rod reaches about 85%, the range of the expanded support circumference covers the full number series of trousers, and with the intelligent adjustment system, different trouser circumference sizes can be easily switched.

A flap valve for a large filter tower comprises a flap support provided with a circular channel cavity; the turning plate shaft assembly is rotationally connected to the turning plate support, and a turning shaft passes through the circle center point of the circular channel cavity; the turning plate body comprises a left turning plate sheet body and a right turning plate sheet body; and the soft sealing ring is attached to the inner wall of the circular channel cavity, and the soft sealing ring can abut against the left side turning plate piece body and the right side turning plate piece body to form sealing fit with the left side turning plate piece body and the right side turning plate piece body. The left side and the right side of the turning plate shaft assembly are stressed evenly, so that the turning plate shaft assembly can be prevented from being locally stressed excessively, and the service life is prolonged; left and right parts can be opened simultaneously, the opening area is larger, and the fluid passing efficiency is improved; the opening angle of the turning plate body is more comprehensive, so that the passing requirement of irregular fluid can be effectively met, and the situation of fluid accumulation is effectively prevented.

The sealing structure for the gear oil pump is used for a gear oil pump body, one side of the gear oil pump body is fixedly connected with a connecting pipe, the connecting end of the connecting pipe is provided with a fixing ring and a connecting pipe, and the ends, close to the fixing ring, of the connecting pipe and the connecting pipe are fixedly connected with connecting flange rings. A connecting block is fixedly connected to the outer side of the connecting flange ring, sealing pipes are fixedly connected to the two sides of the fixing ring correspondingly, and the two sealing pipes extend into the connecting pipe and the connecting-in pipe correspondingly. The fixing ring and the connecting pipe are driven by the fastening assembly to move towards the connecting pipe at the same time, so that the sealing pipes on the two sides of the fixing ring extend into the connecting pipe and the connecting pipe respectively, and the sealing performance between the sealing pipes and the connecting pipe and between the sealing pipes and the connecting pipe is enhanced through reinforcement of the sealing rings; according to the design, the sealing pipe is used for providing support in the connecting pipe and the connecting pipe, the problem that oil leakage is prone to being caused after the connecting position of the flange body and the pipe body is damaged is solved, and the sealing effect of the whole structure is improved.

The utility model relates to access control electronic equipment technical field discloses an access control identification device with disinfection function, including bottom platform, the bottom platform top fixedly connected with door body, the door body inboard front left and right sides are equipped with the recess and fixedly connected with the connecting ball, the connecting ball outer circle one side fixedly connected with spring, spring one end fixedly connected with the brake roll, the door body inboard front left and right sides fixedly connected with the limit board, bottom platform one side is provided with the machine case, the machine case top middle position fixedly connected with the support rod, the machine case top fixedly connected with the cover. In the utility model, the hole is set up and the connecting ball is installed in the door body front two sides, the spring is connected on the connecting ball surface, the brake roll is connected on the spring one end, and the limit board is fixed on the connecting ball side and the door body, and a cover is fixedly installed on the machine case top, the identification machine is covered, and the human flow passing efficiency is effectively improved.

The utility model provides a sea cucumber culture pond sterilization device which comprises a culture pond and a sterilization pond, the culture pond is communicated with the sterilization pond through a filter pipe, a filter screen is detachably connected in the filter pipe, and a rotatable scraper blade is arranged on one side of the filter screen; the scraping plate is connected with an impeller, the filter pipe is connected with a detection plate capable of stopping the rotation of the impeller, and the impeller is arranged between the filter screen and the disinfection pool. The device is convenient to operate, in the sterilization process, when the filter screen is blocked, the filter screen can be automatically cleaned, and the cleaning frequency can be conveniently adjusted, so that sterilization of the culture pond is facilitated, and the sterilization efficiency and quality are improved.

The utility model relates to a kind of bean dregs filter-out technical field, disclose a kind of stirring device convenient for filtering out bean dregs, including support structure, stirring structure, filter structure and collection barrel, stirring structure and filter structure are respectively installed on support structure, stirring structure includes fixed bracket, electric push rod and motor, the inner side of fixed bracket is provided with guide rail, the telescopic end of electric push rod is fixedly installed mounting plate, mounting plate one end and guide rail slidingly connect, mounting plate is installed pivot by motor, the bottom end of pivot is fixedly installed first connecting rod and second scraper respectively, first connecting rod is fixedly installed first scraper on the side away from pivot.The utility model is driven first scraper, second scraper and filter pot cooperation extrusion soybean by motor by the stirring structure being set, can efficiently promote slurry to flow out and filter by filter hole, and when soybean particle becomes small, electric push rod can drive scraper to move down and reduce gap, further grind out slurry.

The invention discloses a sheathing canal and a guiding sheath, and relates to the technical field of medical instruments. The sheath tube can be used for guiding a sheath. The sheath tube comprises a first tube section and a second tube section connected with the far end of the first tube section. The first pipe section is provided with a first pipe cavity and a second pipe cavity, the second pipe section is provided with a third pipe cavity, and the first pipe cavity and the second pipe cavity are both communicated with the third pipe cavity. The scheme is beneficial for improving the calculus discharge efficiency.

The invention relates to an efficient passing charging device and method for ultrafine particles with controllable charging efficiency. The device comprises an inlet region, an ion vibration charge region and an outlet region. Four interlayers are arranged in the inlet area; and the inlet area is divided into a first sheath gas channel, a first sample gas channel, an ion channel, a second sample gas channel and a second sheath gas channel by the four interlayers. The ion vibration charge region comprises a charge cavity, a first metal electrode and a second metal electrode; the first metal electrode is an anode, and the second metal electrode is a cathode; alternating current is applied to the first metal electrode and the second metal electrode to form an alternating current electric field. The outlet area comprises a separation cavity, a third metal electrode and a fourth metal electrode; and a fixed electric field is formed between the third metal electrode and the fourth metal electrode. According to the invention, the charging speed can be controlled, the efficient charging of the ultrafine particles can be realized, and the charging efficiency of small-particle-size particles and the improvement of the single charging ratio of large-particle-size particles can be realized for different application scenes.

The application discloses a gas diffusion module of a fuel cell, a fuel cell and a preparation method. The gas diffusion module comprises a substrate layer and a microporous layer which are arranged in sequence. The substrate layer is provided with a first hole group and a second hole group. The first hole group and the second hole group are both provided with micro-perforations. The hydrophobicity of the micro-perforations on the first surface is greater than that on the second surface. The pore diameter of the micro-perforations located in front of the air flow direction in the first hole group and the second hole group is greater than that of the micro-perforations located behind the air flow direction. Alternatively, the opening density of the micro-perforations located in front of the air flow direction in the first hole group and the second hole group is greater than that of the micro-perforations located behind the air flow direction. On any homologous line perpendicular to the air flow direction, the opening density of the micro-perforations of the first hole group is greater than that of the micro-perforations of the second hole group, and the pore diameter of the micro-perforations of the first hole group is smaller than that of the micro-perforations of the second hole group. The water in different positions of the cathode surface is kept relatively balanced, and water accumulation and excessive water loss are prevented.

The utility model relates to a multi-stage sesame oil filtering device which comprises a main frame, a rotating shaft and a driving device for driving the rotating shaft to rotate, and a first driving gear, a driving belt wheel and a second driving gear are fixedly arranged on the rotating shaft in sequence; a fixing shaft is fixedly arranged on the main frame, three layers of filter sieve trays are sequentially and rotationally arranged on the fixing shaft from top to bottom, the upper layer of filter sieve tray is fixedly sleeved with a first driven gear meshed with the first driving gear, and the middle layer of filter sieve tray is fixedly sleeved with a driven belt wheel in transmission connection with the driving belt wheel through a belt. And a second driven gear meshed with the second driving gear is sleeved on the filter sieve tray on the lower layer. According to the utility model, three layers of filter screens are arranged, so that solid impurities with different specifications are respectively filtered, the blockage of the filter screens is reduced, and the production continuity is ensured; the rotating directions of the two adjacent layers of filter sieve trays are set to be opposite, so that the sesame oil flows relative to the filter sieve trays, the filter screens are prevented from being blocked, and the efficiency of the sesame oil passing through the filter screens is improved.