62results about How to "Reduce contact" patented technology

The invention discloses multifunctional water quality parameter monitoring, sampling and analyzing equipment, and relates to the technical field of water quality sampling and analyzing equipment.The multifunctional water quality parameter monitoring, sampling and analyzing equipment comprises a sealed shell and a water quality monitoring device.The sealed shell is internally provided with a storage assembly used for continuously extracting water samples multiple times and annularly storing the water samples; a sampling assembly used for accurately obtaining water quality samples of different depths is arranged in the sealing shell, through the use of a crushing assembly, a pipe descending motor drives a driving bevel gear to rotate, a blocking conical cylinder drives a cutting blade to rotate, and the inclined surface of the blocking conical cylinder shovels off wound aquatic plants and sundries from the outer side of a spring pipe; meanwhile, the cutting blade rotates to cut off the wound aquatic plants and sundries, so that the effect of removing the aquatic plants and sundries wound on the outer side of the bourdon tube is achieved, and compared with the traditional sampling device which goes deep into the water bottom and is wound by the aquatic plants and sundries, the equipment can cut off the aquatic plants and sundries wound on the bourdon tube; and the situation that next water taking is affected by winding of the equipment in the using process is reduced.

The gynecological medicine applying device comprises a medicine storage part, the bottom end of the medicine storage part is rotationally connected with a sealing device, a medicine outlet barrel is connected to the bottom end of the sealing device in an inserted mode, a feeding part is rotationally arranged in the medicine storage part, the feeding part penetrates through the sealing device and the medicine outlet barrel, and the medicine outlet barrel is connected with the sealing device in an inserted mode. A medicine applying device is arranged on the medicine outlet cylinder; through the structural design of the medicine storage piece and the feeding piece, after medicine in the first barrel body is used up, the whole device does not need to be taken out of the body of a patient for filling, medicine filling can be conducted only by splitting the medicine storage piece and the feeding piece, unnecessary interference to the patient is greatly reduced in the process, and the medicine filling efficiency is improved. The device is simple in structure and convenient to use, physical discomfort and psychological burden caused by repeated taking and placing of the device to a patient are avoided, meanwhile, the number of times of contact between the device and the external environment is reduced, the risk that bacteria or pathogens invade the body of the patient is effectively reduced, and safety of the patient in the treatment process is guaranteed to the maximum extent.

The application relates to the technical field of image forming, in particular to a conductive component, a process cartridge and an image forming device. The conductive component is arranged on the process cartridge or the image forming device. The process cartridge is detachably mounted into the body of the image forming device. The mounting direction of the process cartridge is a first direction. The conductive component comprises: a plurality of conductive pieces, the conductive pieces are used for realizing the electrical connection between the power supply piece of the image forming device and the load piece of the process cartridge, and at least one load piece comprises a roller piece; the conductive piece comprises an electric contact point, the electric contact point is used for contacting the power supply piece to access the power supply; wherein at least two of the plurality of electric contact points are arranged at intervals along a second direction; the second direction intersects with a third direction and the first direction; and the third direction is parallel to the axial direction of the roller piece. In conclusion, the technical scheme provided by the application can reduce the number of electric contact point scratches and improve the power supply stability.

The invention relates to the technical field of detection devices, and discloses a green and environment-friendly soil remediation detection sampling device which comprises a center shaft, the outer wall of the center shaft is fixedly connected with a protection mechanism, the outer wall of the protection mechanism is in threaded connection with a baffle, and the bottom of the protection mechanism is rotationally connected with a spiral blade. The top of the inner wall of the protection mechanism is rotationally connected with an excavating mechanism, the bottom of the inner wall of the protection mechanism is fixedly connected with a fixing mechanism, the device can test whether stone exists in soil or not, the soil is scattered, large stone blocks are pushed away, the earth cutting work of the earth cutting assembly is facilitated, and meanwhile the device is prevented from being clamped by the stone blocks or affecting the earth taking quality; the possibility that the device is damaged by stones is reduced, the doping of the stones is reduced, the soil sampling quality is improved, the filtered soil is mixed, the detection cost is reduced, four parts of soil are taken at the same sampling point and mixed, the four parts of soil do not need to be taken out respectively and then mixed, the test workload is reduced, and the test efficiency is improved.

The invention belongs to the technical field of computers, and provides a financial dispute case civil litigation evidence intelligent verification and first copy method, which comprises the following steps of: 1, formulating an evidence material and evidence element data standardization template; step 2, intelligent verification of evidence: after the system receives the evidence material and evidence element data submitted based on the standardized template, automatically extracting the element data in the evidence material by means of an AI technology, and comparing the extracted element data with the evidence element data; 3, evidence quantitative judgment; step 4, processing the case; and step 5, outbound calling of the first link. According to the invention, the intelligent level and reliability of evidence verification and first copy of financial dispute cases are improved.

The utility model relates to the technical field of vegetable dicing, in particular to an intelligently-adjusted vegetable dicing device which comprises a device shell, a vegetable containing groove formed in the device shell, a push plate placed in the vegetable containing groove and a telescopic air cylinder installed on the device shell. Limiting hook plates are symmetrically arranged in the equipment shell; a vegetable dicing adjustable assembly and a power synchronization assembly are arranged on the equipment shell, the power synchronization assembly can drive and adjust the vegetable dicing adjustable assembly, and a gap between a transverse cutter and a vertical cutter is reduced, so that the size of vegetable dices penetrating through the gap is controlled, intelligent adjustment of vegetable dicing is achieved, and use is more convenient; a worker is prevented from repeatedly replacing the cutter, the contact frequency of the worker and the cutter is reduced, and the worker is prevented from being accidentally injured by the cutter.

This utility model discloses an automatic detachable card-type sample injection and detection device, belonging to the technical field of medical testing equipment. The device solves the problems of complex and time-consuming installation of existing detection devices and the risk of contamination during sample card removal. It includes a shielding shell, a fixing component, and an auxiliary mechanism. The fixing component includes a protective shell, and a telescopic block, spring, and sliding block disposed within the protective shell that cooperate with a pre-installed column. The device can be quickly installed and disassembled by the engagement and disengagement of the telescopic block with the pre-installed column. The auxiliary mechanism includes a detection probe, a sliding column, a fixing column, and a detachment control lever. The detachment control lever is controlled by an electromagnet and remains horizontal to support the sample card when energized. Through the above structure, this utility model achieves rapid deployment of the device, simplifies operation, automatically discards samples in a contactless manner, effectively reduces contact between medical personnel and samples, lowers the risk of contamination, and improves detection efficiency.

The application provides a heating disc protection structure and an electric rice cooker. The heating disc protection structure comprises a bracket assembly, a supporting assembly and an adjusting assembly. The bracket assembly is arranged outside the heating disc. The supporting assembly is used for changing the height position of the bracket assembly, so that the supporting surface of the bracket assembly is higher or lower than the top surface of the heating disc. The adjusting assembly is used for adjusting the supporting assembly by the cover closing action. After the cover is closed in place, the supporting surface of the supporting assembly is lower than the top surface of the heating disc. The heating disc protection structure can provide support and protection for the heating disc, reduce the friction or collision between the inner pot and the heating disc, and maintain the normal use of the heating disc.

The present invention relates to a cartridge for a fuel cell humidifier and a fuel cell humidifier, in which the cartridge is provided in the fuel cell humidifier, the fuel cell humidifier humidifies a dry gas to be supplied to a fuel cell stack by using a wet gas, and the cartridge comprises: an inner case having openings at respective ends; an internal inlet formed on the inner housing and configured to introduce a first gas into the inner housing; an internal outlet disposed at a position spaced apart from the internal inlet in the first axial direction, and configured to discharge the first gas from the inside of the inner housing; and a hollow fiber membrane bundle accommodated inside the inner case, in which the hollow fiber membrane bundle includes a plurality of woven hollow fiber membranes formed by weaving at least two hollow fiber membranes.

The present invention relates to the field of bow saw machines, specifically a bow saw machine, comprising a bed body; a lifting assembly is provided on the material platform of the bed body, and the lifting assembly can realize up and down height adjustment of the material; a clamping assembly is symmetrically provided on the lifting assembly, and the clamping assembly is used to fix the material on the lifting assembly, and a connecting structure is provided on the clamping assembly; compared with the existing bow saw machine, the bow saw machine designed in the present invention can rotate the original fixed part round bar material, so that the round bar material and the cutting saw cooperate to cut a relatively regular circular groove, and at the same time, the processing efficiency is also improved. During the entire sawing process, there is no need to stop the machine to operate the round bar material, and the number of times that manual labor contacts the running bow saw machine is reduced, thereby improving safety.

The utility model discloses a storage machine for improving the storage leakproofness of a semiconductor packaging carrier plate, which comprises a rack, a conveying mechanism and a storage mechanism, a sealing element is arranged in the rack and divides the rack into an open space and a closed space, the conveying mechanism is positioned in the open space and is used for conveying the packaging carrier plate to be stored, and the storage mechanism is positioned in the closed space. The storage mechanism is located in the closed space and used for temporarily storing the packaging carrier plate, the lifting mechanism is used for driving the storage mechanism to ascend and descend in the closed space, and the translation mechanism is used for driving the packaging carrier plate to penetrate through the sealing piece to be transferred to the storage mechanism for temporary storage. Through the structural arrangement of the lifting mechanism, the translation mechanism and the sealing piece, the intelligent degree of storage of the packaging carrier plate by the storage machine is improved, meanwhile, dust attached to the surface of the packaging carrier plate is reduced, and the problems that the storage machine can only provide a pure storage space for the packaging carrier plate, and the dust attached to the surface of the storage machine cannot be reduced are solved.

The utility model discloses a kind of frozen fruit agricultural residue detection reagent automatic adding device, including adding device main part and the display screen for being used to control of being set on adding device main part front side, the adding device main part is powered by connecting external power supply, traditional reagent addition needs to be manually positioned, added, removed to detection container one by one, and operation step is complicated and time-consuming.And the innovation point is placed by the circumferential distribution of the symmetrical design and containing groove of rotating cross plate, multiple detection medicine bottles can be placed at one time, user only needs to push rotating cross plate, with the magnetic attraction positioning of magnet and magnetic plate, medicine bottle can be accurately moved to the lower side of output pipe quickly, without repeatedly adjusting medicine bottle position;After adding is completed, continue to rotate cross plate to switch to next medicine bottle, greatly reduce the time cost of manual positioning and handling, especially suitable for the scene of multiple batches of frozen fruit samples centralized detection, reduce the working strength of operator.

The utility model discloses a kind of denture is used to oral impression protection device, including the protective box with top being open, the protective cover of open shielding sealing is arranged in protective box top, and protective cover is detachably arranged, the protective box and protective cover are prepared using heat preservation, light shielding material, the storage cylinder is installed in the inboard of protective box, the storage cylinder side is equipped with several air vents. The denture is used to oral impression protection device, by storing oral impression in the sealed environment of heat preservation and protecting it, reduce the influence of external environment temperature to oral impression, while dry agent is arranged in protection device, for dehumidification, avoid oral impression to be influenced by temperature and humidity and appear discoloration, softening etc., the influence of external force to oral impression can be also reduced by the protection device, avoid oral impression to be stressed deformation even breakage in storage or transportation process, oral impression is better protected.

The utility model relates to the field of foam board cutting equipment, and discloses a polystyrene foam board semi-automatic cutting device which comprises a cutting table, fixing plates are fixedly connected to the two sides of the upper portion of the cutting table, a first motor is fixedly connected to the left side of the upper portion of the cutting table, and a driving wheel is fixedly connected to the output end of the first motor. A driven wheel is arranged on the right side of the exterior of the driving wheel, the driving wheel is connected with the driven wheel through a belt, a lead screw is fixedly connected to the interior of the driving wheel, the lead screw is rotatably connected to the interiors of the two fixing plates, a movable frame is in threaded connection to the exterior of the lead screw, and an electric push rod is arranged on the front side of the upper portion of the movable frame. According to the foam board cutting device, the foam board can be automatically moved to the position below the cutting knife, an operator does not need to frequently make contact with the cutting knife and move the foam board, the contact frequency of the operator and the cutting knife can be reduced, the risk of accidental injuries is reduced, and meanwhile the cutting efficiency is improved.

The invention relates to the technical field of municipal construction, in particular to a road guide line spraying device which comprises a vehicle body. The spraying vehicle is characterized in that a paint storage tank is fixed to the top of the vehicle body and connected with a spraying mechanism, the spraying mechanism is used for spraying the road guide line, a connecting plate is arranged in the paint storage tank and connected with a rotating mechanism, rotating rods distributed in a circumferential mode penetrate through the interior of the connecting plate, and the rotating rods are rotationally connected with the connecting plate; stirring blades are fixed to the lower end of the rotating rod, a rotation mechanism is connected to the upper end of the rotating rod, and a cleaning mechanism is arranged at the bottom of the vehicle body. When a road guide line is sprayed, paint is stirred through circular motion and autorotation of stirring blades, the solidification phenomenon of the road guide line in the spraying process can be effectively avoided, the spraying effect is guaranteed, meanwhile, the surface of a road can be cleaned, and the spraying efficiency is improved. Therefore, the influence of impurities on the surface of the road on spraying of the road guide line is avoided.

The invention relates to the technical field of image forming, in particular to a conductive component, a processing box and an image forming device. The conductive part is used for being arranged on the processing box or the image forming device, the processing box is detachably installed in a body of the image forming device, the installation direction of the processing box is the first direction, the conductive part comprises a plurality of conductive parts, and the conductive parts are used for achieving electric connection between a power supply part of the image forming device and a load part of the processing box. At least one load piece comprises a roller piece; the conductive piece comprises an electric contact which is used for being in contact with a power supply piece so as to be connected with a power source. Wherein at least two of the plurality of electric contacts are arranged at intervals along a second direction; the second direction intersects with the third direction and the first direction; the third direction is parallel to the axial direction of the roller. In conclusion, according to the technical scheme provided by the invention, the scratching times of the electric contact can be reduced, and the power supply stability is improved.

The utility model relates to the technical field of living furniture, and provides a soft package bed which comprises a soft package bed head seat, a bed frame, a dust blocking piece and a fixing piece. The soft package bed head seat is arranged at one end of the bed frame, and a hollow area is arranged between the soft package bed head seat and the bed frame; the upper side of the dust blocking piece is arranged on the soft wrapping bed head seat, and the lower side of the dust blocking piece is detachably connected with the bed frame through the fixing piece, so that the dust blocking piece shields the hollow area. On the basis, dust on one end of the mattress close to the soft package bedside seat can be reduced.

The utility model provides a kind of activated carbon filtering device for water purification, including base, discharge area is provided on the base, the first support and second support top are integrally formed with guide rail, installation frame is fixedly installed on the guide rail top, funnel is fixedly installed on the installation frame, water receiving tank is provided on the base top, activated carbon tray is provided above the water receiving tank, installation plate is fixedly installed on the activated carbon tray, the number of sector gate that is two is hinged on the installation plate by hinge, mesh is opened in the sector gate, flow guide cover is fixedly connected in the sector gate bottom, the flow guide cover corresponds with mesh, first lug is fixedly connected in the sector gate bottom, slot is opened in the first lug, and convex plate is fixedly connected on the activated carbon tray outer wall;The present activated carbon filtering device is convenient for replacing activated carbon, and the replacement process not only saves time and effort, but also can reduce the phenomenon that old carbon contacts hand or environment.

The utility model discloses a right crankcase box press -mounting device, including positioning subassembly and press -mounting subassembly, and positioning subassembly includes bearing station and positioning mechanism, and positioning mechanism installs in bearing station top, and positioning mechanism is used for positioning right crankcase body, press -mounting subassembly includes first push -press mechanism, second push -press mechanism and third push -press mechanism, and first push -press mechanism, second push -press mechanism and third push -press mechanism set up in the side of bearing station, and first push -press mechanism, second push -press mechanism and third push -press mechanism are along the interval setting of bearing station periphery. The utility model can realize right crankcase body press -mounting plug, breather pipe and oil guide pin simultaneously, and improve production efficiency.

The present invention relates to the technical field of data security authentication, and in particular to a method and system for energy data security dynamic authentication based on smart contracts, the method comprising: collecting energy data sequences; obtaining neighbor energy data sequences and neighbor energy change sequences of each data point in the energy data sequence; constructing neighbor discretization indexes and plaintext information abnormal fluctuation indexes of each data point in the energy data sequence, calculating the horizontal neighbor byte difference index of each column byte and the vertical neighbor byte difference index of each row byte of the plaintext byte matrix; obtaining the plaintext byte change matrix, and then obtaining each plaintext information group, using the MD5 information digest algorithm to extract the information digest of energy information based on the plaintext information group, as the authentication password for energy data security authentication in the smart contract, and completing the security dynamic authentication of energy data. The present invention can ensure that the information digest has higher security and improve the security of dynamic authentication of energy data.

The invention relates to a method for resource utilization of household garbage, which comprises the following steps: fully and harmlessly treating kitchen wastes in the household garbage by using dry anaerobic fermentation, using the generated biogas for power generation, and using the waste heat for providing the heat demand in a plant; the method comprises the following steps: performing high-purity separation on high-value plastic components (mainly PE / PP) and other rubber and plastics and textiles by utilizing washing flotation, and performing hot melting granulation on the plastic components to produce high-value regenerated plastic particles; magnetic metal, inert inorganic components, fermentation residual organic components and residual combustible components in the household garbage are fully separated through mechanical sorting, and four types of products including the magnetic metal, nutrient soil, gravel and RDF (Refuse Derived Fuel) are respectively formed. According to the method, high-quality separation of high-value components / organic components / inert components / combustible components in the household garbage is realized through the process combination of mechanical separation, biological treatment and heat treatment, so that the aim of recycling and comprehensively utilizing all the components of the household garbage is fulfilled.

The utility model relates to the technical field of selenium drum gears, and discloses a selenium drum gear fixing frame which comprises a first cover plate, a developing cover fixedly connected to the outside of the first cover plate, a powder conveying cover fixedly connected to the outer side of the first cover plate, a driving cover fixedly connected to the outside of the first cover plate, and two connecting grooves formed in the outer side of the first cover plate. The inner wall of the connecting groove is slidably connected with a baffle, one side of the baffle is fixedly connected with a pull rod, the pull rod is sleeved with a spring, the other side of the baffle is fixedly connected with a clamping block, and two mounting grooves are formed in the outer side of the first cover plate. According to the selenium drum gear fixing frame disclosed by the utility model, the selenium drum gear fixing frame can be disassembled and assembled through mutual matching of structures such as the pull rod, the spring, the baffle plate and the clamping block, so that the operation risk on equipment in the maintenance process can be effectively reduced, and the possibility of accidents or damage to the equipment in the maintenance process is reduced.

What is proposed is a method for protecting cathode blocks of aluminium electrolyzers having prebaked anodes, the method comprising providing a mixture of a refractory material with a binder, applying said mixture as a coating on the surface of the cathode blocks giving consideration to the cell bottom wear profile, and drying said coating. As the refractory material, use is made of a bimodal or polymodal mixture of titanium diboride powders or titanium diboride powder, the granulometric composition of which has a bimodal or polymodal particle size distribution. As the binder, use is made of sulfonated reaction products of naphthalene with formaldehyde having a coke residue of at least 30% by weight; after drying, a layer of graphite powder is applied to the coating surface as protection against oxidizing during commissioning, thus forming, upon heating of the cell bottom, an aluminium-wettable TiB2-C composite coating.

The utility model discloses a feeding device of an electric furnace in a zinc factory, which comprises the electric furnace, an electric furnace feed port, a stock bin and a feeding device, and the stock bin further comprises a bin door, a feeding platform, a dust removal device and a material distribution chamber. The feeding device further comprises a spiral feeding device, a discharging valve and a discharging port. The feeding device has the functions that the two groups of V-shaped spiral feeding devices are designed, and the lower side of each group of spiral feeding device is provided with the blanking valve and the blanking port which correspond to the feeding port of the electric furnace, so that manual feeding for each feeding port is not needed during feeding, the feeding efficiency is improved, and the labor intensity of workers is reduced. The labor amount is reduced, time and labor are saved, and meanwhile the contact frequency of workers and the electric furnace is reduced; in addition, a dust removal device is further designed at the top of the stock bin, dust in the stock bin can be sucked away during feeding and collected into a dust collection bag, air pollution is avoided, mineral aggregate dust can be collected so that the mineral aggregate dust can be thrown into the stock bin again, and therefore resource waste is avoided.

The invention discloses a double-wing structure forceps holder for inhibiting mitral valve regurgitation and conveying equipment thereof, and relates to the technical field of surgical operating instruments. Comprising a fixing seat, the fixing seat is fixedly connected with supporting rods which are distributed in a mirror image mode through elastic pieces, the supporting rods are fixedly connected with elastic rods which are distributed at equal intervals in a mirror image mode, the fixing seat is fixedly connected with fixing pieces which are distributed in a mirror image mode, and the fixing pieces are fixedly connected with a mounting plate through the elastic pieces. The opposite sides of the mounting plates distributed in a mirror image mode are fixedly connected with barbs at equal intervals. By changing the positions of the barbs, the number of times that the barbs make contact with the mitral valve in the operation process is reduced, then damage to the mitral valve is reduced, the good fixing effect is achieved between the forceps holder and the mitral valve, and then the forceps holder can more stably restrain reflux of the mitral valve of a patient; meanwhile, the blades composed of the supporting rods and the adjacent elastic rods are opened and closed along with the movement of the mitral valve, the effect similar to that of a one-way valve is achieved, and the effect of restraining mitral valve regurgitation is further enhanced.

The utility model discloses a freezing and shaping device for processing battle boots, training shoes and common clothes leather shoes, relates to the technical field of shoe processing, is suitable for shaping sole processing of battle boots, training shoes and common clothes leather shoes, and comprises a freezing unit, and the guide unit is arranged on the outer surface of the freezing unit and is used for finishing. According to the utility model, the working table, the freezing box, the conveying belt, the compressor, the evaporator, the expansion valve, the condenser, the dryer and the sucking pump are matched with one another, so that shoes entering the freezing box can be conveniently frozen and shaped; through cooperation of a mounting bracket, a hydraulic cylinder, a telescopic limiting rod, a lifting plate, an adjusting block, a sleeve, a fixing bolt, a limiting plate I, a positive and negative motor, a limiting sliding rod, a lead screw and a limiting plate II, shoes can be conveniently limited and arranged into shoe piles, and the shoe piles are intensively conveyed into a freezing box for freezing, so that the contact frequency between the interior of the freezing box and the outside is reduced, and the working efficiency is improved. And the freezing shaping effect of the freezer is improved.

The utility model discloses a baijiu mixing device in the technical field of baijiu processing equipment, the baijiu mixing device comprises a baijiu mixing cylinder and a baijiu mixing mechanism, the baijiu mixing cylinder comprises a cylinder body and a cylinder cover buckled on the cylinder body, a motor is fixedly connected to the outer bottom of the baijiu mixing cylinder, a stirring element is arranged in the baijiu mixing cylinder, and the stirring element is detachably connected with an output shaft of the motor; the wine mixing mechanism comprises a plurality of wine storage tanks, the bottom of each wine storage tank is communicated with a guide pipe, the guide pipes are communicated with the interior of the wine mixing tank, the top of each wine storage tank is fixedly connected with an air cylinder, an output shaft of the air cylinder vertically and downwards penetrates through the top of the wine storage tank to be located in the wine storage tank, and a piston is arranged in the wine storage tank and fixedly connected with the output shaft of the air cylinder. A wine inlet hole is formed in the bottom of the wine storage tank, a one-way liquid inlet valve used for feeding liquid into the wine storage tank is installed in the wine inlet hole, a liquid inlet pipe is communicated with the interior of the wine inlet hole, and the liquid inlet pipe is communicated with storage tanks of different seasoning wine. According to the scheme, the problem of alcohol volatilization caused by too many wine jar opening times in the white spirit blending process is solved.

The invention discloses a hydraulic power plant automatic voltage control logic configuration method, and belongs to the technical field of hydraulic power plant automatic control, and a main process framework of hydraulic power plant AVC logic configuration in a business logic layer can be divided into three stages. Submodules included in the first stage comprise a whole-plant reactive power / voltage given mode submodule, a single-machine AVC switching condition judgment submodule and a whole-plant AVC switching condition judgment submodule and are used for judging whether whole-plant AVC is switched on or not and determining a whole-plant reactive power / voltage given mode; sub-modules included in the second stage comprise an input fault tolerance checking sub-module, a reactive given control mode sub-module and a voltage given control mode sub-module and are used for calculating a whole-plant AVC reactive distribution value QAVCSET; and submodules included in the third stage comprise an equal power factor distribution submodule, a reactive capacity proportional distribution submodule and a similar adjustment margin distribution submodule and are used for calculating an AVC distribution value of each unit which is input into the AVC, and when the AVC is in a closed-loop adjustment mode, the AVC distribution value is issued to each unit.

The invention discloses a power device. The power device comprises a gallium oxide substrate; the N-type gallium oxide epitaxial layer is located on the surface of the gallium oxide substrate; the gallium nitride epitaxial layer is located on the surface of the side, away from the gallium oxide substrate, of the gallium oxide epitaxial layer and comprises a first P-type gallium nitride layer, a first N-type gallium nitride layer and a second P-type gallium nitride layer which are stacked, and a groove is formed in the gallium nitride epitaxial layer and extends into the first N-type gallium nitride layer; the gallium nitride epitaxial layer comprises a first region and a second region which are parallel to the plane where the gallium oxide substrate is located, the first region is located between the adjacent grooves, and the second region is located at the bottoms of the grooves; the second N-type gallium nitride layer is located in the first region of the gallium nitride epitaxial layer and located in the surface of the second P-type gallium nitride layer; and the third N-type gallium nitride layer is located in the second region of the gallium nitride epitaxial layer and located in the surface of the first P-type gallium nitride layer. The power device combines the advantages of GaN and Ga2O3 materials, and has better performance.

The invention relates to the technical field of waste liquid treatment, and discloses an NMP waste liquid efficient purification device, comprising a base, left and right side walls of the base are fixedly connected with support plates, a processing shell is arranged above the base, a processing groove is arranged on the upper surface of the processing shell, a distillation mechanism for distilling the waste liquid is arranged on the upper surface of the base, and when the NMP waste liquid needs to be purified, the NMP waste liquid to be purified is injected into the processing groove through a feed inlet, and as the NMP waste liquid is continuously injected into the processing groove, the processing shell descends, and the lifting plate and the telescopic plate are driven to descend together through a lifting block, at which time the lifting block contacts a sensor at the bottom of the lifting groove, the sensor sends a signal to a transmitter, and the transmitter emits electromagnetic waves after receiving the signal, and the electromagnetic waves act on the inside of the processing groove through a heat conduction groove, so that the NMP waste liquid in the processing groove is distilled.