32results about How to "Increase the distribution" patented technology

The invention relates to the technical field of new energy batteries, in particular to a lithium iron phosphate battery module which comprises a bottom plate, an outer shell, an inner shell and a plurality of battery monomers, the outer shell, the inner shell and the plurality of battery monomers are all arranged on the upper surface of the bottom plate, the inner shell is arranged in the outer shell, the plurality of battery monomers are all arranged in the inner shell, and the inner shell is arranged in the bottom plate. The electric kettle further comprises a water cooling mechanism, a stirring mechanism and a heat guiding mechanism, and the inner shell is filled with a phase change material. Through fixed connection of a connecting rod and a plurality of water cooling pipes, in the running process of a new energy automobile, the plurality of water cooling pipes can synchronously move up and down by utilizing inertia, so that stirring of a phase change material in a molten state is realized, heat adsorbed in the phase change material in the molten state can be uniformly distributed, and the heat absorption efficiency of the phase change material in the molten state is improved. And the cooling effect is improved in the flowing process of the cooling liquid in the water cooling pipe.

The invention discloses a pipeline wall change detection method in the technical field of pipeline detection. The method comprises the following steps: step 1, clamping a moving part above a to-be-detected pipeline; step 2, driving the moving part to move on the to-be-detected pipeline to adjust a detection position; step 3, detecting the wall thickness of the pipeline by a detection device on the moving part; the moving part and the detection device in the first step, the second step and the third step comprise a mounting frame and a detection part, mounting shafts are rotationally mounted on the two sides of the lower end of the mounting frame correspondingly, clamping frames are fixedly mounted on the mounting shafts, multiple sets of lower connecting shafts are rotationally mounted at the lower ends of the clamping frames, and driving wheels are fixedly mounted on the lower connecting shafts. One end of each mounting shaft is provided with a locking mechanism, the locking mechanisms can lock the positions of the mounting shafts and the clamping frame, the detection piece is slidably connected to the mounting frame, the ultrasonic thickness detection equipment can automatically move on the pipeline, the detection piece can rotate for angle adjustment, and the detection range is wider and more comprehensive.

The utility model belongs to the field of smoke exhaust for boilers, and particularly relates to a smoke exhaust and dust removal device for a boiler, which comprises a box body, the end part of the box body is communicated with an air inlet; the other end of the box body is communicated with an air outlet; the top of the box body is fixedly connected with a water pump; the top of the box body is fixedly connected with a water storage tank; the water pump is connected with the water storage tank through a pipeline; a shower head is fixedly connected to the top of the inner side wall of the box body; the water storage tank is connected with the shower head through a pipeline; a plurality of first round holes are formed in the bottom of the shower head; a plurality of pull ropes are fixedly connected to the bottom of the shower head; the middle part of the pull rope is fixedly connected with a plurality of fixing plates; through the cooperation effect of the pull rope and the fixing plate, water flow makes contact with the fixing plate in the descending process and flows out along the edge of the fixing plate, the distribution range of the water flow in the device is enlarged, the contact area of the water flow and flue gas is increased, the water flow makes more uniform contact with the flue gas, and dust removal treatment of the water flow on the flue gas is enhanced.

The application belongs to the field of waste gas purification, and particularly relates to an organic waste gas purification treatment equipment, which comprises a base, a fan assembly is fixedly installed on the top of the base, an exhaust assembly is arranged on one side of the fan assembly, and the fan assembly output end and the exhaust assembly are in communication, the exhaust assembly is fixedly installed on the top of the base, an adsorption mechanism is arranged on the top of the base, the adsorption mechanism is used for removing pollutants in waste gas, a pretreatment mechanism is arranged on the top of the base, the first main pipe and the first branch pipe are arranged, so that the waste gas can be sprayed and pretreated before being treated by the adsorption mechanism, the dust in the waste gas is reduced, the burden of the activated carbon in the adsorption mechanism on the waste gas treatment is reduced, the water body and the gas in the first box are more uniformly distributed and diffused through the arrangement of the multiple first pipes and the first branch pipes, and the dust removal effect of the water body on the waste gas is improved.

The invention discloses a vacuum electrode induction melting double-flow gas atomization metal powder device, the technical solution of which includes a melting chamber and an atomization chamber, the melting chamber is located above the atomization chamber, and the melting chamber is connected to the atomization chamber, the melting chamber includes an induction coil, an atomization nozzle and a vertically arranged metal rod, the atomization chamber includes a shell, the shell top wall is arranged as a double-layer cavity structure, the upper end of the shell top wall is provided with a high-pressure air inlet, the lower surface of the top wall is provided with a plurality of air outlets, the air outlets are extended from the center of the top wall to the edge so as to be arranged in a long strip shape, and the plurality of air outlets are evenly distributed in an annular shape along the central axis of the shell; the lower end of the atomization chamber is provided with a collection tank and a gas recovery device, and the collection tank and the gas recovery device are both connected to the shell. The device can be used to prepare fine spherical metal powders, and can reduce the "satellite powder" phenomenon, which is conducive to improving the fluidity of metal powders.

This invention discloses an alternating electromagnetic field seismic monitoring network, comprising receiving electromagnetic field signals from high-power artificial and natural sources, and an alternating electromagnetic observation network composed of multiple receiving stations. The network receives electromagnetic field signals from artificial and natural sources through multiple observation stations deployed based on seismic distribution trends, and processes the observation data, including spectral analysis of the observed electromagnetic field time series to obtain the spectrum and self-power spectrum of each electromagnetic field component, as well as the cross-power spectrum between different components. This allows for the calculation of impedance reflecting underground electrical properties, as well as parameters such as apparent resistivity and impedance phase. Inversion is performed on apparent resistivity and impedance phase at different frequencies to obtain electrical structural parameters at different underground depths. This invention utilizes a wide frequency range of alternating electromagnetic field signals, which are most sensitive to earthquakes, and achieves comprehensive three-dimensional earthquake monitoring through long-term continuous observation by deploying an observation network in seismically active areas and key defense zones.

This invention relates to the technical field of detection devices, specifically disclosing a multi-depth sampling and detection device for bio-fermentation, comprising a fermenter, a stirring shaft vertically disposed in the middle of the fermenter, multiple stirring components disposed vertically on the sidewall of the stirring shaft, and multiple sampling components disposed on the sidewall of the fermenter; one stirring component corresponds to one sampling component; each stirring component includes a horizontally disposed sleeve fixedly connected to the stirring shaft, blades fixedly disposed on the sidewall of the sleeve, multiple first sampling holes opened on the sidewall of the sleeve, a sampling tube rotatably disposed within the sleeve, and multiple second sampling holes opened on the sidewall of the sampling tube; the multiple first sampling holes are located on the same straight line on the outer wall of the sleeve, and the multiple second sampling holes are respectively located on different straight lines on the outer wall of the sampling tube. This invention's multi-depth sampling and detection device for bio-fermentation is capable of sampling and detecting at different depths and locations within the fermenter.

The utility model provides a water pan, an air conditioner indoor unit and an air conditioner. The water pan comprises a water pan body, the water pan body comprises a water pan body and an air guide part, the air guide part is arranged on the air outlet side of the water pan body and used for guiding airflow to an air outlet, the first end of the air guide part is connected with the water pan body, and the second end of the air guide part extends downwards. According to the water pan, by arranging the air guide part, airflow flowing out of the air outlet side of the water pan body can be guided to the inner side wall face close to the air outlet to flow, the distribution range of the airflow in the air outlet is enlarged, and the phenomenon that the airflow at the air outlet is distributed unevenly is relieved.

The invention discloses an additive for self-repairing concrete cracks in a corrosive environment and a preparation method of the additive. The additive comprises component A microspheres and component B microspheres, the component A microspheres comprise the following substances in parts by weight: 17.74-51.9 parts of a calcium source, 8-9 parts of microorganisms and 0.5-1 part of a tackifier; the component B microsphere is prepared from the following substances in parts by weight: 28.1 to 49.51 parts of an aluminum source and 0.5 to 1 part of a tackifier; the surfaces of the component A microspheres and the component B microspheres are coated with sulphoaluminate cement-iron ore powder mixed gel layers. The microbe mineralization activity range can be remarkably widened, the distribution range of repairing products in cracks can be greatly widened through the synergistic effect of inorganic mineral gel and microorganisms, the limitation that the self-repairing depth of the microorganisms is small is broken through, self-repairing of the cracks in the whole area range is achieved, and the self-repairing effect of the whole fracture surfaces of the cracks is improved; the water blocking capability of the crack can be realized, and particularly the blocking of pressure water can be realized.

The invention belongs to the technical field of lactitol production, and provides a purification and regeneration device and a regeneration method in a lactitol production process. The purification and regeneration device comprises an ion exchange column, one end of which is connected with a sewage pipe and a backwashing water inlet pipe, and the other end of which is connected with a desalted water inlet pipe and a regeneration agent feed pipe; the ion exchange column is connected with a temporary storage cylinder through a connecting pipe, so as to solve the technical problem that the resin cannot be completely regenerated due to repeated use of the regeneration agent in the prior art, thereby affecting its exchange capacity. The invention realizes repeated recycling of the low-concentration regeneration agent by mixing a set volume of high-concentration regeneration agent with a low-concentration regeneration agent in a modulation cylinder and finally forming a regeneration agent of a set concentration, thereby ensuring that the concentration of the flushing regeneration agent is the set concentration. The invention can be widely used in operation scenarios for reducing solution consumption.

The utility model belongs to the field of cleaning, and particularly relates to vortex type air pump cleaning equipment which comprises two vertical plates. A collecting box is fixedly connected to the middle of every two adjacent vertical plates. The middle parts of the adjacent vertical plates are fixedly connected with transverse plates; the top of the transverse plate is fixedly connected with an air pump body; the top of the transverse plate is fixedly connected with a watering assembly. A plurality of first connecting rods are fixedly connected to the bottom of the transverse plate; the end parts of the adjacent first connecting rods are fixedly connected with connecting plates; the output end of the air pump body is fixedly connected with an air pipe; the air pipe and the transverse plate are arranged in a penetrating mode. The air pipe is communicated with the connecting plate; the bottom of the connecting plate is fixedly connected with elastic cloth; the bottom of the elastic cloth is fixedly connected with a pressing plate; by arranging the elastic cloth, airflow blown out by the air pump body can flow along the elastic cloth and reach the surface of the workpiece, the airflow concentration of the device is achieved, the airflow amount reaching the surface of the workpiece is increased, and the drying effect of the device on the workpiece is improved.

The invention discloses adjustable tungsten filament processing and stretching equipment, and relates to the technical field of stretching. Supporting plates are arranged at the corners of the bottom of the device body, two vertical plates are arranged on the right side of the top of the device body and symmetrically distributed with the device body as the center, motors are arranged on the outer walls of the vertical plates, transmission rods are rotationally installed on the inner walls of the vertical plates, and one ends of the transmission rods penetrate through and are fixedly installed on the front faces of the output ends of the motors. A plurality of take-up assemblies are fixedly installed on the outer wall of the transmission rod at equal intervals. The distance between the tungsten filament and the take-up assembly can be freely adjusted when the tungsten filament is stretched, namely, the relative stretching position is effectively changed according to needs, meanwhile, the tungsten filament on the outer wall of the pay-off assembly is stretched and preheated through the U-shaped heating assembly, internal stress of the tungsten filament is effectively reduced, and the elongation and tensile strength of the tungsten filament are prevented from being reduced; the breakage probability of the tungsten filament in the stretching process is increased; and the overall quality of the tungsten filament is reduced.

The utility model relates to the technical field of agricultural planting irrigation, and discloses an irrigation device for agricultural planting, which is characterized in that extension pipes are arranged at two ends in a transverse pipe in a sliding manner, and when a movable sleeve slides up and down along a sliding rail, a movable arm can drive the extension pipes to horizontally slide in the transverse pipe, so that the overall length after the transverse pipe and the extension pipes are combined is adjusted; meanwhile, the limiting plate is clamped in the clamping groove of the fixing piece under the action of the compression spring to limit the axial position of the movable sleeve, and when the irrigation range needs to be adjusted, external force pushes the limiting plate to overcome the resistance of the compression spring to transversely move, so that the limiting plate is separated from the clamping groove, and the movable sleeve slides upwards along the sliding rail; the movable arm pushes the extension pipe to extend out towards the two ends of the transverse pipe through the hinge structure, so that the distribution range of the irrigation holes is enlarged, on the contrary, when the movable sleeve moves downwards, the extension pipe retracts into the transverse pipe, the irrigation range is reduced, and the function of flexibly adjusting the irrigation coverage area according to planting requirements is achieved.

The invention relates to the field of bridge engineering, in particular to an intelligent sensing prestress steel bar structure and a manufacturing method thereof.The intelligent sensing prestress steel bar structure comprises a steel bar, the steel bar is used for tensioning a bridge, a groove is formed in the outer wall of the steel bar, and the groove is formed in the whole body in the length direction of the steel bar in a double-spiral-line shape with the axis of the steel bar as the center line; a groove is formed in the prestressed steel bar, the groove is used for arranging a fiber grating sensor, the fiber grating sensor is used for monitoring the stress in the axial direction of the steel bar, the double-helix groove is formed in the prestressed steel bar, the fiber grating sensor is pasted on the inner wall of the groove, and the groove is arranged to be in a double-helix form, so that the stress of the prestressed steel bar is monitored. The grooves can cover the outer wall of the prestressed steel bar in a large area, the distribution range of the sensors is expanded, and the monitoring comprehensiveness and uniformity are guaranteed; the fiber grating sensor deforms along with the deformation of the groove, and is always attached to the inner wall of the groove, so that real-time and continuous monitoring can be realized.

The invention relates to the technical field of solid biomass waste recycling and biomass activated carbon preparation, in particular to a perovskite active agent loaded coconut shell activated carbon composite material and a preparation method and application thereof. The preparation method of the perovskite active agent loaded coconut shell activated carbon composite material comprises the following steps: preparing coconut shell activated carbon by taking coconut shell as a raw material; laCo (1-x) MnxO3 is prepared, the molar ratio of lanthanum to cobalt to manganese is 1: (1-x): x, and x is 0-1; and loading LaCo < 1-x > Mn < x > O < 3 > on the coconut shell activated carbon to obtain the perovskite active agent loaded coconut shell activated carbon composite material. According to the preparation method, the problems that in the prior art, extra electrification is needed for electrolysis, the raw material proportion requirement is high, the proportion is complex, and the method is not suitable for large-scale industrial production are solved, efficient absorption of the harmful dye malachite green in the printing and dyeing wastewater is achieved, and the preparation method has important research significance and environment-friendly application value.

The utility model relates to the technical field of refrigeration equipment, and discloses a refrigerator which comprises a refrigerator body and an ice maker. The ice maker comprises a mounting frame, ice making grids, an ice scraping rod, an ice baffle and an ice storage box; the ice cube tray is connected with the mounting frame, the ice scraping rod is rotationally connected with the mounting frame, and the ice baffle is arranged on one side of the ice cube tray; the ice scraping rod is used for pushing out ice blocks in the ice cube tray, and the ice baffle is used for guiding the ice blocks into the ice storage box; wherein the ice baffle comprises a connecting part, a blocking part and an ice guide part; the connecting part is connected with the ice cube tray, the ice guide part is arranged on the side, away from the ice cube tray, of the connecting part, and the ice guide part is used for guiding the track of ice blocks falling into the ice storage box. According to the ice storage box, the ice guide part is arranged, the ice guide part guides the track of the ice blocks falling into the ice storage box, and the ice blocks have certain transverse impulse in the falling process through the ice guide part, so that the ice blocks are prevented from being accumulated below the ice cube trays in a concentrated manner, the distribution range of the ice blocks in the ice storage box is widened, and the ice storage amount of the ice storage box is increased.

The present disclosure provides an erasing method of a non-volatile memory and a non-volatile memory, and relates to the technical field of semiconductors. The method comprises: performing a first erasing operation on a target erasing area and then performing a first erasing verification operation to obtain a first erasing verification result of each storage unit in the target erasing area; obtaining a first erasing verification result of the target erasing area according to the first erasing verification result of each storage unit in the target erasing area; in response to the first erasing verification result of the target erasing area being failed, performing a second erasing operation on the target erasing area and then performing a second erasing verification operation to obtain a second erasing verification result of each storage unit in the target erasing area; and determining whether to perform a third erasing operation on the target erasing area according to the number of storage units in the target erasing area whose first erasing verification result and second erasing verification result are both failed. The method narrows the threshold voltage distribution range of the storage unit after the erasing operation.

The invention discloses a coal mine foam fracturing and fire blast synergistic advanced presplitting roof caving method. The method comprises the following steps that S1, drilling is constructed; constructing a drill hole in a proper position of the top rock stratum of the coal seam; s2, preparing a foam fracturing fluid; the preparation and foaming of the foam fracturing fluid are realized through the foam preparation device, and combustible gas is injected during foaming; s3, fracturing is carried out; a fracturing system is arranged at the drill hole, foamed foam fracturing fluid is injected into the drill hole through the fracturing system, and a crack is formed; s4, blasting and caving; and when the hole fracture of the roof rock stratum meets the fire blast requirement, injection of the foam fracturing fluid is stopped, and then ignition and detonation are conducted. Foam fracturing is combined with burning and explosion, the foam fracturing enables a roof rock stratum to generate a large number of hole cracks, the strength of the roof rock stratum is weakened, a burning and explosion space is provided for the burning and explosion technology, the safety of caving of a mining working face is guaranteed, advanced caving can be achieved, and the safety problem caused by the fact that a hard roof is difficult to fall in a goaf is solved.

The present invention relates to the technical field of pesticide production, and discloses a waste gas treatment device for pesticide production, comprising a driven spray mechanism and a plurality of elastic pressure reducing mechanisms, wherein a valve plate installed inside a hollow rod structure and capable of blocking the longitudinally flowing liquid and a spiral spring for producing an elastic damping effect on the downward movement of the valve plate are arranged inside the waste gas treatment device for pesticide production. The atomizing nozzle is arranged along the circumferential surface of the rod-shaped structure, thereby reducing the space occupied by the upward flow of the waste gas, thereby improving the efficiency of waste gas treatment, and at the same time, the liquid output pressure received by the atomizing nozzles in the same vertical direction from low to high is in an increasing state, therefore, the effective atomization range formed by the atomizing nozzles from low to high will gradually expand toward the periphery, and finally can completely cover the upward flow area of ​​the waste gas, so that the waste gas can react with the reaction liquid in the maximum range, thereby improving the effective treatment effect of the waste gas.

The utility model belongs to the field of air purification, specifically relates to a kind of water negative ion mechanism and its neck formula water negative ion device, wherein water negative ion mechanism includes air outlet subassembly and water negative ion generating component;The air outlet passage of the air outlet subassembly is adjacent to the water mist outlet of the water negative ion generating component, and the flowing air of air outlet passage flows drives the water mist with water negative ion generated by the water negative ion generating component at water mist outlet moves to target area.The utility model will air outlet passage and water mist outlet be adjacent to setting, make both independent, on one hand, water negative ion generating component generated water mist can be avoided to enter the fan of air outlet subassembly, avoid the electrical part and mechanical part of fan to be damp, on the other hand, water mist with water negative ion can be moved to target area by flowing air generated in air outlet passage using air outlet subassembly, to reduce the demand of water mist conveying device needing additional energy, simplify structure.

The utility model relates to the technical field of extraction towers, and discloses a DMF (Dimethyl Formamide) recovery extraction tower based on a metal pore plate filler, which comprises an extraction tower shell, a feeding pipe and a liquid inlet pipe are arranged on the upper part of the surface of the extraction tower shell, a gas discharging pipe is arranged on the upper surface, and a liquid discharging pipe is arranged on the lower part; the metal pore plate filler layer is arranged in the inner cavity of the shell, so that the mass transfer area can be increased, two extracted phases are contacted more fully, and the extraction efficiency is improved. The spraying frame is installed at the liquid outlet end of the liquid inlet pipe, the first nozzles are evenly distributed at the bottom, the inclined second nozzles are installed between the first nozzles, liquid can be sprayed at different angles, the distribution range is enlarged, and the two-phase contact effect is enhanced. A motor is arranged in the middle of the spraying frame, a rotor of the motor is coaxially provided with a rotating plate, cleaning brushes are arranged on the rotating plate corresponding to the nozzles, and when the motor drives the rotating plate to rotate, the cleaning brushes can clean the nozzles, prevent blockage, ensure uniform and stable liquid spraying and maintain normal operation and extraction effect of the extraction tower.

The utility model belongs to the field of river channel desilting, and particularly relates to a water conservancy desilting device which comprises a device body. The middle part of the device body is communicated with a discharging pipe; the middle part of the device body is communicated with a feeding pipe; a motor is fixedly connected to the middle of the device body; the output end of the motor is fixedly connected with a rotating shaft; a plurality of blades are fixedly connected to the middle of the rotating shaft; a plurality of stirring rods are fixedly connected to the middle of the rotating shaft; the inner side wall of the device body is fixedly connected with a filter pad; the filter pad is rotationally connected with the rotating shaft; baffles are symmetrically and fixedly connected to the middle of the filter pad; the baffle is fixedly connected with the device body; the baffle is rotationally connected with the rotating shaft; through the cooperation effect of the rotating shaft and the blades, when the rotating shaft rotates, the blades can rotate and cut garbage in the sludge, the size of the garbage in the sludge is reduced, mixing of various components in the sludge is promoted, blockage generated when the device treats the sludge is reduced, and the convenience of the device for treating the sludge is improved.

The utility model relates to the technical field of air conditioning, and discloses an air purification device, the air purification device comprises an air duct assembly, an electrode support and an electrode, the air duct assembly is provided with a purification air duct and is provided with an air inlet and an air outlet which are communicated with the purification air duct; the electrode support is arranged in the purification air duct, the electrode support is annular, and the axis of the electrode support faces the air outlet; and the electrode is arranged on the electrode bracket. The utility model further discloses a household appliance.

The application provides an aluminum alloy water-cooled plate laser welding device and method, and relates to the technical field of laser welding.The aluminum alloy water-cooled plate laser welding device comprises a laser, a water-cooled plate laser head and a welding machine tool, the water-cooled plate laser head comprises a laser galvanometer and a multi-spot beam splitting assembly arranged in sequence along the laser transmission direction; wherein the laser galvanometer is used for realizing spiral swinging of the laser emitted by the laser; the multi-spot beam splitting assembly is used for splitting the laser into light spots; the welding machine tool is connected with the water-cooled plate laser head and is used for driving the water-cooled plate laser head to move; the action of the welding machine tool and the laser galvanometer makes a plurality of light spots on the aluminum alloy water-cooled plate form a welding pattern which simultaneously spirally swings. The aluminum alloy water-cooled plate laser welding device realizes multi-point simultaneous welding on the water-cooled plate plane, is beneficial to the overflow of pores, performs stirring welding through rotating light spots, reduces the stirring frequency, is stable in the process, can effectively inhibit the generation of pores and reduce the porosity of the welding bead.

The invention relates to a marine target object abnormity early warning system based on visual situation display applied to the field of abnormity early warning, a plurality of target objects sailing on the sea can form a self-service information chain, on one hand, when the distance between adjacent target objects is close, information sharing can be carried out through the self-service information chain, abnormity of the opposite side can be conveniently found in time, and the early warning efficiency is improved. On the other hand, when yawing or disconnection occurs, the position range of the adjacent target object can be narrowed through the adjacent target object, the search and rescue difficulty and the search and rescue time consumption are reduced, and the safety of the disconnected target object is improved; in addition, in cooperation with the arrangement of a self-diffusion chain, under the normal condition, the sea surface condition can be monitored in real time, a navigation plan can be conveniently adjusted in time, safe and stable navigation is effectively guaranteed, when the communication losing condition occurs, the distribution range can be directly enlarged, signals can be sent to the outside in a multi-point mode, and a fixed base station or an adjacent target ship can be conveniently contacted in time; and self-rescue in an abnormal state is effectively realized.

The present invention discloses a waste liquid purification device for silicone resin production, and relates to the technical field of waste liquid purification. The present invention includes a device body, a driving assembly is arranged on the outer wall of the device body, a drain pipe is arranged on the bottom of the device body, an electric telescopic rotating column is rotatably installed at the center of the top of the inner wall of the device body, and an arc groove is opened on the outer wall of the electric telescopic rotating column, an I-shaped disk is fixedly installed at the bottom of the telescopic end of the electric telescopic rotating column, and the central axis of the I-shaped disk is designed to slide through, an arc sheet is fixedly installed at the inner edge of the I-shaped disk, a filter plate is fixedly installed on the outer wall of the telescopic end of the electric telescopic rotating column, and an anti-winding device for preventing silk thread-like dirt from winding in the waste liquid is arranged on the periphery of the electric telescopic rotating column. The present invention enables the telescopic end of the electric telescopic rotating column to drive the filter plate to move synchronously, so as to avoid the accumulation of dirt caused by the long-term erosion of dirty water on the filter plate, and prevent the local area of ​​the filter plate from being easily blocked, thereby reducing the filtering effect on sewage.

The invention relates to the technical field of flue gas flow velocity detection, in particular to a probe fixing device and a flue gas flow velocity monitoring device. The probe fixing device comprises a supporting sleeve, a push-pull mechanism, a transmission mechanism and a plurality of connecting mechanisms; the supporting sleeve can be arranged in the peripheral wall of the chimney in a penetrating mode, the supporting sleeve is provided with an installation channel, the connecting mechanisms are rotatably installed on the side portion of the supporting sleeve, all the connecting mechanisms are distributed at intervals in the axial direction of the supporting sleeve, and the connecting mechanisms are provided with installation parts; the transmission mechanism is arranged in the mounting channel of the supporting sleeve, and the push-pull mechanism is mounted at the head end of the supporting sleeve; the push-pull mechanism drives the connecting mechanism to rotate through the transmission mechanism so that the connecting mechanism can rotate between the folding position and the unfolding position. By adopting the probe fixing device provided by the invention, the number of the formed mounting holes is reduced, so that the mounting workload of the probe is reduced, and the mounting period is shortened.

The invention discloses a two-dimensional polymer with nonlinear optical properties and a synthesis method thereof, comprising the following steps: spreading a monolayer surfactant on a water surface; adding a ligand 1 solution into an aqueous phase, so that the ligand 1 is orderly arranged on the water surface under the adsorption of the surfactant; injecting a ligand 2 into the aqueous phase, diffusing the ligand 2 into the orderly arranged ligand 1, performing two-dimensional polymerization, and obtaining a two-dimensional polymer film; the structural formula of the ligand 1 is shown in formula I; the structural formula of the ligand 2 is shown in formula II: M is 2H or Zn; the covalent organic framework film prepared by the method is uniform, continuous, and has good light transmittance, and solves the key problems of low transmittance and high scattering encountered in third-order nonlinear optical applications.

The invention belongs to the technical field of power devices, and provides a device preparation method based on a self-alignment patterning process and a chip, the growth morphology of a self-alignment material is controlled through different selection ratios, the injection range of P-type doped ions is adjusted through an etching mode, a P-type shielding region is formed at the bottom of a groove of an N-type drift region, and the P-type shielding region is formed at the bottom of the groove of the N-type drift region. The growth morphology of a hard mask is controlled through the selection ratio of different self-alignment materials, a corner dielectric layer is arranged in a groove corner region of an N-type drift region, and a plurality of P-type floating ring regions of which the widths are gradually reduced from a current expansion layer to a drain electrode layer are arranged in a central region of the N-type drift region. The widths of the plurality of P-type floating ring regions are gradually reduced from the P-type shielding region to the drain electrode layer, so that the distribution range of a high electric field in the drift region can be expanded, the area of a space charge region is increased, the saturation current of the device is effectively reduced, the endurance capability of the device under a short-circuit test is improved, and the reliability of the device is improved.

The utility model belongs to the technical field of gas distributors, and particularly relates to a gas distributor which comprises a shell, a gas inlet end and a plurality of gas outlet holes, the shell comprises a top surface body and a bottom surface body, the top surface body is a cone-shaped body or an arc-shaped body, the plurality of gas outlet holes are uniformly distributed in the top surface body, gas guide pipes are connected in the gas outlet holes, and the gas inlet end is connected with the gas guide pipes. The gas guide pipe comprises a straight pipe at the bottom and an inclined pipe at the upper part, the conical top surface body or the arc top surface body is arranged, so that the jetted gas flow can be distributed in a trumpet shape, and the gas distribution area is enlarged; the gas guide pipe with the inclined pipe at the upper part is arranged, so that the jetted gas flow can flow in a spiral shape, the gas distribution area is enlarged, and meanwhile, the materials are spirally stirred to a certain degree, so that the stirring effect is improved.