784results about How to "Avoid concentration" patented technology

The invention provides a planar gate silicon carbide VDMOS capable of improving short circuit reliability and a preparation method, and the preparation method comprises the steps: depositing metal on the lower side surface of a silicon carbide substrate, and forming drain electrode metal; performing epitaxial growth on the upper side surface of the silicon carbide substrate to form a drift layer; performing ion implantation on the drift layer to form a current sharing layer; forming a barrier layer on the drift layer, and performing etching and ion implantation to form a P-type well region and a low-resistance region; a barrier layer is formed again, etching and ion implantation are carried out, and an N-type source region and a P-type source region are formed; re-forming a barrier layer, etching the barrier layer to form a through hole, and depositing to form a first gate dielectric layer; depositing to form a second gate dielectric layer; a barrier layer is formed again, the barrier layer is etched to form a through hole, metal is deposited, and a gate metal layer is formed; and re-forming a barrier layer, etching the barrier layer to form a through hole, depositing metal, forming a source metal layer, and removing the barrier layer to complete preparation. And the heat conduction capability and the thermal reliability of the insulating medium are effectively improved.

The invention relates to the technical field of sewage treatment, in particular to aerobic granular sludge integrated sewage treatment equipment which comprises an aerobic tank, and the aerobic tank comprises an outer tank body and an inner tank body; a turntable is rotationally mounted on the inner bottom surface of the inner tank body, and a plurality of groups of aeration mechanisms are also fixedly mounted on the turntable; the aeration mechanism comprises an aeration assembly, a dredging assembly is arranged on the aeration assembly, and a pressing assembly used in cooperation with the dredging assembly is arranged on the inner wall of the inner tank body; a driving mechanism is fixedly mounted on the top surface of the inner tank body and is in transmission connection with the periphery of the hollow shaft; a transmission assembly is arranged on the periphery of the hollow shaft and is in transmission connection with a plurality of floating foam cleaning assemblies. According to the sewage treatment device, the floating foam cleaning step can be transferred into the settling zone in the sewage treatment process, and cleaning is relatively easy. The dredging assembly is sequentially and periodically pressed by the pressing assembly, so that the aeration assembly is periodically and automatically dredged.

The invention discloses a synthesis method of vitamin C ethyl ether, and belongs to the technical field of vitamin derivative synthesis. The synthesis method comprises the following steps: adding vitamin C, benzaldehyde and a catalyst into a first organic solvent, carrying out an aldolization reaction, adding an organic alkali after the aldolization reaction is finished, carrying out a neutralization reaction, adding an alkylation reagent, carrying out an alkylation reaction, and removing the first organic solvent after the alkylation reaction is finished, so as to obtain the vitamin C benzaldehyde. The preparation method comprises the following steps: adding a first organic solvent into a first organic solvent, pulping, filtering, collecting filter residues, washing and drying to obtain 5, 6-O-benzyl-3-O-ethyl-L-ascorbic acid, carrying out hydrogenation deprotection on the 5, 6-O-benzyl-3-O-ethyl-L-ascorbic acid, filtering after hydrogenation deprotection, collecting filtrate, crystallizing, collecting precipitate, washing and drying to obtain the 5, 6-O-benzyl-3-O-ethyl-L-ascorbic acid. The vitamin C ethyl ether is obtained. The synthesis method provided by the invention is simple to operate and high in production efficiency, and the obtained vitamin C ethyl ether is high in yield and purity.

The invention provides a watering cart for municipal greening engineering, and belongs to the technical field of municipal greening watering carts. The watering cart for municipal greening engineering comprises a cart body, a water storage tank and a watering mechanism, the water storage tank is mounted on the surface of the cart body, a mounting box is mounted on the surface of the cart body, and the watering mechanism is mounted on the surface of the cart body and comprises a first rotating shaft, a second watering pipe, a water pump and a three-way valve. By arranging the watering mechanism, water output by the water pump can be shunted through a three-way valve, one part of water is atomized, the other part of water is mixed with fertilizer and then sprayed on the surfaces of green plants, the spraying effect is improved, an atomizing nozzle can atomize water into tiny water drops, more uniform water distribution can be achieved through air propagation, and the water content is increased. According to the dust removal device, the water covering range is enlarged, water drop concentration or water waste is avoided, atomized water mist can be combined with dust particles through tiny water drops in air, dust in the air can be settled, and the dust removal function is achieved.

The invention relates to the technical field of cables, and provides a low-voltage power supply cable which comprises a plurality of conductive cables, each conductive cable comprises a plurality of stranded conductors, and each stranded conductor is coated with an insulating layer; the plurality of insulating layers are arranged on the inner side of the inner lining layer, the plurality of stranded conductors are all arranged inside the inner lining layer, the space between the inner lining layer and the plurality of insulating layers is filled with a filling layer, the outer part of the inner lining layer is coated with a sheath layer, the end part of each sheath layer is slidably sleeved with the butt-joint cylinder, the stringing assembly is arranged on the butt-joint cylinder, and the heat dissipation assembly is arranged on the inner lining layer. A conductive frame is arranged between every two opposite butt joint cylinders, a conductive assembly is installed on each conductive frame, and a heat dissipation assembly is installed on each conductive assembly. Through the above technical scheme, the problems that in the prior art, due to the fact that high current density is prone to occurring at the butt joint position of two cables, the local temperature of a contact point rises, and the heat dissipation effect is poor are solved. And a gap is generated between the two cables, so that the current transmission performance is influenced.

The utility model provides an electric field treatment system and a transducer thereof, the transducer comprises a backing and an electrode array attached to the backing, the electrode array comprises a plurality of electrode units arranged at intervals, a plurality of connecting parts connecting two adjacent electrode units, and open spaces formed among the plurality of electrode units. The transducer further comprises a conductive adhesive attached to the electrode array, and the conductive adhesive is arranged on the side, away from the backing, of the electrode unit in a whole piece covering mode. According to the electric field treatment system and the transducer thereof, the whole piece type conductive adhesive covering all the electrode units is adopted, replacement is convenient, the heating conditions of all the electrode units tend to be consistent, and local heat concentration is avoided.

The utility model discloses a fruit tree fertilizing device, which belongs to the technical field of fruit tree fertilizing devices and comprises a cart, and hub components are mounted at two ends of the bottom of the cart respectively. A bracket is mounted at one end of the trolley, and a positive and negative ball screw frame is arranged on the bracket; the two ends of the positive and negative ball screw frame are respectively connected with a fertilizer applying frame through a screw nut pair, and the fertilizer applying frame is semicircular; a plurality of groups of drainage holes are formed in the bottom end of the fertilizing frame at equal intervals. When the two fertilizing frames are close to each other and combined, the whole fertilizing frame is approximately circular, the purpose of fertilizing around the root of a fruit tree is achieved through uniform distribution of the liquid drainage holes, the situation that fertilizer is locally accumulated or intensively applied to a certain area is avoided, and an operator can complete the whole fertilizing operation without adjusting the fertilizing position or direction for many times; and time and labor cost are saved.

The invention discloses a SiC FinFET device which comprises a fin body, and at least two first shielding regions are formed in a first SiC epitaxial layer at the bottom of the fin body. And the first shielding region further extends to the bottoms of the gate structures on the two sides of the fin body, so that the bottoms cover the gate dielectric layers of the gate structures. A first current expansion layer is formed between every two adjacent first shielding areas, and a first interval is formed between every two adjacent first shielding areas. And a second shielding region is formed in the fin body at the top of each first shielding region. A second interval larger than the first interval is formed between every two adjacent second shielding areas. And a second current expansion layer, a well region and a source region are formed in the fin body between two adjacent second shielding regions. The invention further discloses a manufacturing method of the SiC FinFET device. According to the invention, the fin bodies can be adopted to increase the mobility of channel carriers, the gate dielectric layer can be well protected, and the device has low specific on-resistance.

The invention relates to the technical field of loading devices, and discloses an automatic loading device with a movable feed opening, which comprises a main body, the right side of the main body is fixedly connected with a feed pipe, the bottom of the main body is fixedly connected with a discharge pipe, one side, far away from the discharge pipe, of the main body is fixedly connected with a motor, and the output end of the motor is fixedly connected with a connecting shaft. The end, away from the motor, of the connecting shaft penetrates through the inner wall of the body and extends into the discharging pipe. Due to the special conical shape and the rotary motion, an outward swinging centrifugal force can be generated on falling materials, and the materials are thrown to different positions in the compartment under the action of the centrifugal force and are uniformly distributed in the compartment. The materials are prevented from being concentrated in a certain area, the situation that the materials are stacked too high or too low is reduced, the height of the materials in a compartment is more uniform, the loading uniformity is improved, and meanwhile a large amount of time can be saved.

The invention relates to the technical field of carbon dioxide recovery waste gas purification, in particular to waste gas purification equipment for carbon dioxide recovery and a purification method thereof.The waste gas purification equipment for carbon dioxide recovery comprises a shell assembly and further comprises a slag removal assembly, and the slag removal assembly comprises a fixed cylinder and a rotating part; the rotating component comprises a slag removal motor, a first stirring plate and a second stirring plate, a fan-shaped shell is fixedly mounted at the bottom of the outer cylinder, a water outlet part is arranged at the bottom of the fan-shaped shell, and a collecting component is arranged in the fan-shaped shell, and the waste gas purification method for carbon dioxide recovery comprises the steps of spraying, purification and the like. The device has the advantages that sediments in the lime water are continuously removed in the waste gas purification process, the negative influence of sediment accumulation on the sulfur dioxide removal efficiency is avoided, sulfur dioxide in the waste gas is effectively purified, corrosion of the sulfur dioxide to subsequent carbon dioxide recovery equipment is reduced, and the reliability and the safety of a whole waste gas treatment system are improved.

The invention relates to the technical field of protective film cutting, in particular to an automatic cutting device for protective film machining, which comprises a bottom plate and a cutting laser head, a lower sliding plate is movably arranged above the bottom plate, a top block is arranged on the upper side of the lower sliding plate in a lifting manner, and a soaking mechanism is arranged in the top block; and an adsorption positioning mechanism is arranged on the upper side of the top block. Through the soaking mechanism and the follow-up jetting mechanism in the soaking mechanism, when the cutting laser head moves to cut the protective film, water can be continuously jetted to the edge cutting position after cutting, so that the water forms a water film at the edge cutting position, and the water film conducts a large amount of heat generated during cutting of the edge cutting position to the area nearby the protective film; and heat can be prevented from being concentrated at the edge cutting position, so that deformation or fragmentation of the edge cutting position caused by excessive concentration of heat at the edge cutting position can be prevented, the flatness of the edge cutting position of the protective film is further improved, and the cutting quality is improved.

The battery box comprises a box body with an opening in the upper end, a box cover for sealing the upper end of the box body and a fire extinguishing assembly located on the side face of the box body, and the box cover and the box body are matched to form a sealed battery mounting bin. The fire extinguishing assembly used for achieving battery fire extinguishing comprises a pressure-resistant storage tank storing lithium battery fire extinguishing liquid and a pump body communicated with the interior of the pressure-resistant storage tank, and the pump body is connected with the box cover through a pipeline and used for feeding the lithium battery fire extinguishing liquid into the box cover. According to the battery box, the fire extinguishing assembly and the fire extinguishing flow channel are integrated, if uncontrollable overheating or fire disasters occur, a fire extinguishing agent can rapidly intervene, fire is prevented from spreading to other parts of a battery system, and therefore the safety of the battery system is greatly improved.

The invention discloses a semiconductor device and a preparation method thereof, and the semiconductor device comprises an epitaxial wafer which comprises a substrate and an epitaxial layer located on the surface of the substrate; the epitaxial layer comprises an active region and a terminal region which are arranged in sequence; the cellular structure is located in the active region; the first multi-stage groove is provided with a first step side wall and a second step side wall which are opposite to each other; the first step side wall is adjacent to the cellular structure; the bottom of the first multi-stage groove comprises a first bottom area adjacent to the first step side wall and a second bottom area adjacent to the second step side wall; the first-stage field plate comprises a first dielectric layer which covers the surface of the first multi-stage groove; the first field plate metal layer covers the first dielectric layer on the side wall of the first step and the surface of the first bottom region; the second-stage field plate comprises a second dielectric layer which at least covers the first field plate metal layer and the first dielectric layer in the first multi-stage groove; and the second field plate metal layer covers at least part of the second dielectric layer on the surface of the second bottom region.

The invention relates to the technical field of logistics transportation, and discloses a medical article intelligent transportation method and device based on task scheduling and a medium, and the method comprises the steps: generating transportation tasks of to-be-transported medical articles, and sorting the transportation tasks according to the priorities of the to-be-transported medical articles; scheduling a target medical transport robot corresponding to a transport task in the transport task sequence according to the real-time working state; controlling the target medical transportation robot to execute a medical article transportation action; environment data and task execution states in medical article transportation are monitored in real time, and robot redistribution strategies corresponding to the to-be-transported medical articles are generated according to the task execution states and the task emergency degrees; determining an optimization factor of the initial transportation track according to the transportation state; and the initial transportation track is dynamically optimized through the optimization factor and the environment data, and the redistribution medical robot is controlled to execute the medical article transportation action according to the optimized initial transportation track. The efficiency of medical article transportation can be improved.

The invention relates to the technical field of MOS (Metal Oxide Semiconductor), and discloses a silicon carbide semiconductor device with an N-top region, which comprises a drain electrode, a semiconductor epitaxial layer, a source electrode, a grid electrode and a grid oxide layer covering the surface of the grid electrode, and is characterized in that the semiconductor epitaxial layer comprises an N substrate layer and an N drift layer, a P + well layer, an N well layer and a P well layer are formed in the N drift layer through ion implantation; a first N-type doped region is formed in the N drift layer and located under the grid electrode through ion implantation, and a P-type doped region is formed in the first N-type doped region through ion implantation. A PN junction formed by P-type doping can generate a large depletion layer, the depletion layer mainly expands to a JFET region with low doping concentration, short-circuit current flows through a position closer to the center of the JFET region, the density of the short-circuit current can be effectively reduced by adding the first N-type doping region and the P-type doping region, and the short-circuit tolerance time of the device is prolonged.

An arc extinguish chamber of a circuit breaker comprises a fixed seat, an arc chute assembly composed of a plurality of arc extinguish sheets is arranged in the fixed seat, each arc extinguish sheet comprises a main body, extension parts arranged at two ends of the main body and a diversion trench arranged between the extension parts, each extension part comprises a diversion surface connected with the diversion trench, the diversion surface is arranged in an inclined manner, and the diversion trench is arranged in the main body. Flow guide sawteeth are arranged on the flow guide surface, each flow guide sawtooth comprises a groove part and a protruding part, and the inclination angle of the bottom surface of each groove part is consistent with that of the flow guide surface. The inclined flow guide surface can effectively guide the electric arc and the air flow to flow towards a specific direction, thereby preventing the electric arc from irregularly diffusing among the arc extinguishing sheets, and improving the arc extinguishing efficiency. And the diversion sawteeth form a multi-direction diversion effect through the groove parts and the protruding parts, so that the airflow dispersion is more uniform, the arc path is further lengthened, and the arc cooling capability is enhanced.

The invention relates to the technical field of sewage treatment, in particular to a printing and dyeing sewage treatment device and method, a treatment box is internally provided with a stirring assembly and a chemical adding assembly, the chemical adding assembly comprises a chemical adding pipe, the stirring assembly is provided with a first driving part, and the first driving part is used for driving the chemical adding pipe to do circumferential swing motion; flow stirring assemblies located on the two sides of the stirring assembly are arranged in the treatment box, and when the stirring assembly works, the flow stirring assemblies are driven to stir sewage in the treatment box; aeration assemblies located on the two sides of the stirring assembly are arranged on the bottom wall of the treatment box, a second driving part is arranged on the stirring assembly, and the aeration assemblies reciprocate in the treatment box through the second driving part. According to the sewage treatment device, the stirring assembly works to drive the dosing pipe to do circumferential swinging motion, and meanwhile, the stirring assembly works to drive the flow stirring assembly to stir sewage on the two sides of the stirring assembly, so that the sewage in the treatment box can be well stirred, and the mixing effect of an activated sludge mixed solution and the sewage is better.

The invention discloses a smart health management system and method based on Internet of Things, and particularly relates to the technical field of privacy protection. Physiological data, health data and identity information of old people are encrypted by applying a homomorphic encryption technology; after encryption is completed, the physiological data and health data of the old people are integrated and then are separated from identity information to be stored in the intelligent equipment terminal, the data transmission and storage process is always kept in an encrypted state, and the risk of data leakage is effectively reduced; according to the invention, data training is carried out on the health comprehensive early warning model at the nodes, and then the health comprehensive early warning model training results of the nodes are aggregated to obtain the global health comprehensive early warning model, so that the data privacy can be ensured, and machine learning modeling can be carried out by using dispersed data; the privacy risk alarm is sent to the system management center when it is detected that the system has the privacy risk, then the privacy protection scheme is adjusted, and the duration of the privacy risk can be shortened.

The invention discloses carbon monoxide gas oxidative dehydrogenation equipment, which belongs to the field of carbon monoxide treatment and comprises a hollow shell, a gas inlet cover fixedly connected to the upper end of the hollow shell, a bottom plate fixedly connected to the inner wall of the hollow shell and a first exhaust port formed in the lower end of the bottom plate. A first partition plate and a second partition plate located below the first partition plate are further fixedly connected to the inner wall of the hollow shell, and a flow passing cavity is formed between the upper portion of the first partition plate and the air inlet cover. The cooling air ring can exhaust oxygen to the inner wall of the reaction through hole, it is ensured that the oxygen is evenly distributed on the inner wall of the reaction through hole, the oxygen is prevented from being concentrated in a certain area, and therefore the catalytic reaction efficiency is improved; it is ensured that the catalytic reaction is evenly conducted in the whole catalyst, the situation that the reaction efficiency is reduced due to insufficient oxygen or unsmooth airflow in a local area is avoided, and it is ensured that reactants can be fully converted.

The invention discloses a plant extraction, separation and purification device, and relates to the technical field of separation and purification, the plant extraction, separation and purification device comprises a distillation retort, the distillation retort comprises a retort body and a retort cover arranged at the top of the retort body, a feeding pipe is fixed at the upper part of the side wall of the retort body, and an exhaust pipe is arranged on the retort cover; the two heating mechanisms are respectively fixed on the inner walls of the left side and the right side of the tank body; the condensation mechanism comprises an air inlet cover and a liquid collecting cover, and a plurality of condensation assemblies are arranged between the air inlet cover and the liquid collecting cover. Vaporized liquid mist of a plant extracting solution moves from top to bottom in the condensation cavity of the condensation assembly, meanwhile, cold water moves from bottom to top in the inner water cavity and the outer water cavity of the condensation assembly, and the condensation cavity is located between the inner water cavity and the outer water cavity, so that the cold water can effectively exchange heat with the vaporized liquid mist in the condensation cavity; therefore, vaporized liquid mist in the condensation cavity is condensed, and the condensation efficiency is effectively improved.

A circuit breaker comprises a shell, an arc extinguish chamber and an arc striking chamber, the arc extinguish chamber and the arc striking chamber are arranged in the shell, the arc striking chamber comprises two arc isolating pieces which are oppositely arranged, an arc striking channel is formed between the two arc isolating pieces, the shell comprises two side plates, the two side plates are arranged on the side faces, away from the arc striking channel, of the two arc isolating pieces respectively, and the two side plates are arranged on the side faces, away from the arc striking channel, of the two arc isolating pieces respectively. At least one side plate is provided with a supporting wall, a flow guide cavity is defined by the supporting wall, the side plates and the arc isolating piece, the flow guide cavity and the arc striking channel are oppositely arranged on the two sides of the arc isolating piece, and the flow guide cavity is provided with an air inlet communicated with the arc striking channel and an air outlet communicated with an arc extinguish chamber. When the air pressure of the gas generated by breaking of the circuit breaker is high, the gas can enter the flow guide cavity under the driving of the air pressure difference, the high-temperature and high-pressure gas generated at the breaking moment is prevented from being all concentrated in the arc striking channel, and the gas enters the arc extinguish chamber to be extinguished after being cooled and subjected to auxiliary pressure relief through the flow guide cavity.

The invention discloses a solar cell and a preparation method thereof, and a photovoltaic module. The solar cell comprises a substrate and a passivation contact structure. Wherein the substrate is provided with a first surface and a second surface which are oppositely arranged along the thickness direction of the substrate; the passivation contact structure is arranged on the first surface of the substrate; the passivation contact structure comprises a tunneling oxide layer and a polycrystalline silicon layer arranged on one side, deviating from the substrate, of the tunneling oxide layer; the polycrystalline silicon layer comprises at least one first doped polycrystalline silicon layer; the carbon doping amount of the first doped polycrystalline silicon layer is gradually increased along the direction gradually away from the substrate. According to the passivation contact structure in the solar cell provided by the invention, by inserting the carbon-containing first doped polycrystalline silicon layer of which the carbon doping amount increases progressively into the polycrystalline silicon layer, the polycrystalline silicon layers in different regions can have different H distribution states, so that the concentration of H in the tunneling oxide layer is effectively avoided, and finally the purposes of reducing the film explosion rate and improving the performance of the solar cell are achieved. And the phenomenon of membrane explosion of the battery is reduced.

The present invention relates to the field of integrated circuit technology, and in particular to a lead frame with an inductive self-lowering base island. The lead frame comprises a lead frame body, the top of which is provided with an upper protective mechanism; the bottom of which is provided with a lower protective mechanism. When the chip of the lead frame of the present invention is working, the internal temperature rises, and the elastic support sheet and the deformable support sheet expand due to heat. Since the expansion coefficient of the elastic support sheet is greater than the expansion coefficient of the deformable support sheet, the elongation of the elastic support sheet is large, and the deformable support sheet is located at the bottom of a section of the parabolic elastic support sheet away from the base island, the section of the elastic support sheet away from the base island will bend downward, thereby driving the base island to descend, avoiding the concentration of thermal stress on the chip, so that the lead frame can sense the self-lowering base island when the working temperature rises, and automatically reset the base island when the working temperature drops, thereby improving the working stability and the environmental adaptability.

The invention relates to a scheduling processing method and device, computer equipment, a computer readable storage medium and a computer program product, and relates to the technical field of cloud computing. According to the invention, the problem of pressure measurement flow concentration can be avoided to a certain extent, so that the network request flow condition in reality can be better simulated. The method comprises the steps that a node recommendation value of each node in a cluster is obtained for each scheduling unit copy of a pressure measurement task, the node recommendation value is determined based on the deployment state of a node pool where the node is located for the pressure measurement task, and a target node of the scheduling unit copy is determined according to the node recommendation value of each node.

The utility model discloses a box body, a battery pack and a vehicle, the box body comprises a water cooling plate and a frame which are connected, the water cooling plate is arranged at the bottom of the frame in the first direction and defines a mounting area together with the frame, the surface, facing the mounting area, of the frame is provided with a supporting structure, the supporting structure comprises a supporting part and a reinforcing part, and the supporting part is arranged in the first direction; the height of the supporting part is larger than or equal to that of the water cooling plate, in the plane perpendicular to the first direction, the projection of the supporting part and the projection of the water cooling plate both fall within the projection range of the installation area, and the reinforcing part is connected to the included angle between the supporting part and the frame. According to the box body, the battery pack and the vehicle, the weight of the battery cells can be prevented from being completely concentrated on the water cooling plate, and the overall stability of the box body is guaranteed.

The invention discloses intelligent MR glasses based on travel service, and belongs to the technical field of travel service, the intelligent MR glasses comprise a glasses frame, the outer wall of the glasses frame is fixedly connected with a camera group used for capturing the surrounding environment of a user in real time, and the interior of the glasses frame is fixedly provided with a miniature display screen used for displaying pictures. The bending plate is placed on the neck of a user and drives the bending rod to sleeve the shoulder of the user, so that the upper half portion of the bending plate is attached to the neck of the user and the upper half portion of the bending plate is attached to the shoulder of the user after wearing is completed, and the bending plate can play audio conveniently. According to the intelligent MR glasses, the weight of the glasses is uniformly dispersed to the neck and the shoulders which are relatively large and can bear certain pressure, so that the weight of the glasses frame is prevented from being concentrated on the nose bridge of a user, and the user can comfortably use the intelligent MR glasses for a long time to enjoy travel services when wearing the glasses frame.

The invention relates to the technical field of blow molding devices, in particular to a blow molding device for plastic bottle forming and a control method thereof.The blow molding device comprises a blow molding mold and a preheating box and further comprises a conveying base, a mounting base is connected to the conveying base, a threaded opening is formed in the mounting base and used for mounting a bottle blank, and a butt joint opening is formed in the middle of the mounting base; according to the device, the opening position of the exhaust assembly is switched according to the moving direction of the air supply assembly, the direction of airflow in a bottle blank is adjusted, on one hand, the problem of heat concentration caused by the fact that airflow is always exhausted from the same position is also favorably avoided, and on the other hand, the opening position of the exhaust assembly is switched according to the moving direction of the air supply assembly; and on the other hand, along with the movement of the air supply assembly, the air supply assembly gradually gets away from the opened exhaust assembly, so that the flowing path of airflow in the bottle is prolonged, and the retention time of the airflow is guaranteed.

The utility model provides a dye assistant adding mechanism, which relates to the technical field of adding mechanisms and comprises a stirring mechanism, and a blanking mechanism is fixedly mounted at the top of the stirring mechanism and comprises a feed pipe II. According to the utility model, under the matching of the stirring mechanism and the blanking mechanism, the motor II runs to drive the spiral blade to rotate so as to feed the dye auxiliary, so that the dye auxiliary feeding device has the advantages of accurate control, uniform dispersion, blockage prevention, high adaptability, energy consumption reduction, easiness in maintenance and the like, is beneficial to improving the production efficiency and the product quality, and reducing the production cost; secondly, the first motor operates to enable the stirring rod and the scraper blade to rotate, dye auxiliaries are stirred and mixed, the reaction speed can be increased, the reaction is more sufficient and uniform, and therefore the production efficiency and the product quality are improved, the mixing time is shortened, and the production cost is reduced; meanwhile, the scraper can prevent the materials from accumulating on the container wall to form dead angles.

The invention provides a loop distribution optimization method and system for reducing spacecraft slip ring heat concentration, and belongs to the technical field of spacecrafts. Comprising the following steps: carrying out subarray division on + / -Y wing solar cells; setting a corresponding relation between each sub-array and a high-voltage sub-array and a low-voltage sub-array of a power supply control device, establishing a connection relation between each sub-array of the + / -Y-wing solar cell and a slip ring in a + / -Y-wing solar panel driving mechanism through the corresponding relation between each sub-array of the solar cell and the power supply control device, and dispersing a heating source in the slip ring; the heating source is a power loop of the slip ring of the solar panel driving mechanism which emits heat after current passes through, so that heat concentration in the slip ring is reduced, and the failure risk caused by long-time high-temperature work of the power loop is reduced.

The invention relates to the technical field of MOS semiconductors, and discloses a SiCVD MOSFET structure for inhibiting drain-source voltage overshoot, which comprises a metal drain electrode, a semiconductor epitaxial layer, a metal source electrode, a grid electrode and a grid oxide layer covering the surface of the grid electrode, and is characterized in that the semiconductor epitaxial layer comprises an N substrate layer, a diffusion layer, a P well layer, a doped P layer and an N well layer; the profile of the cross section of the grid electrode is in an inverted U shape, and a polycrystalline silicon doping layer is arranged below the grid electrode; the profile of the cross section of the P well layer is L-shaped, and the height of the cross section of the P well layer is higher than that of the cross section of the polycrystalline silicon doped layer; and an N-doped layer is arranged below the polycrystalline silicon doped layer, wherein the N-doped layer blocks the direct contact between the polycrystalline silicon doped layer and the diffusion layer. The polycrystalline silicon doping layer is formed in the semiconductor epitaxial layer through deposition, the polycrystalline silicon doping layer can reduce the influence of drain-source voltage overshoot, concentration of a high electric field is effectively restrained, and the breakdown phenomenon under high voltage is avoided.