48results about How to "Many contact surfaces" patented technology

An embodiment of the invention provides a silicon-carbon composite anode material which includes a shell and an active and conductive material which is accommodated in the shell. The active and conductive material includes a silicon nano-material, a graphite material and carbon nano-tubes, wherein the silicon nano-material, the graphite material and the carbon nano-tubes are blended according to a weight ratio of 10-30:15-35:1-5. The shell is a cracked carbon layer. The silicon nano-material is silicon nano-sheets or silicon nano-belts with a length-width size being 50-5000 nm and a thickness being 10-500 nm. Surfaces of the silicon nano-sheets or silicon nano-belts are provided with Si-N-Si composite layers and Si-N-C composite layer. The silicon-carbon composite anode material is high in reversible capacity, is high in first-time charging-discharging efficiency, is good in circulating performance, can finally increasing a system capacity of a lithium ion battery and prolongs a cyclic service life of the lithium ion battery. The embodiment of the invention also provides a preparation method of the silicon-carbon composite anode material and the lithium ion battery containing the silicon-carbon composite anode material.

The invention discloses a locating device for an annular workpiece. The locating device comprises a bottom disk; three sliding grooves I uniformly distributed with respect to a circle center of the bottom disk are formed in the bottom disk; clamping blocks I connected in a sliding manner are arranged in the sliding grooves I; three fixing seats are further arranged on the bottom disk; rotating rods are arranged on the fixing seats; pressure rods I are arranged at the upper ends of the clamping blocks I; pressure heads I are arranged at the lower ends of the pressure rods I; supporting faces Iare arranged below the pressure heads I; a disk body is arranged in the center of the bottom disk; sliding grooves II are formed in the upper end of the disk body; clamping blocks II are arranged in the sliding grooves II; pressure rods II are arranged at the upper ends of the clamping blocks II; pressure heads II are arranged at the bottoms of the pressure rods II; outer tapered bulges are arranged on the outer sides of the clamping blocks II; inner tapered bulges are arranged on the inner sides of the clamping blocks II; supporting faces II are arranged on the bottom faces of the inner sidesof the clamping blocks II; plane thread teeth are formed at the bottoms of the clamping blocks II; the interior of the disk body is connected with a disk wire in a sleeved manner; and four bevel gears are arranged in the disk body. The locating device is wide in part clamping scope, errors due to edge deflection of a part with the relatively large diameter can be eliminated effectively, the machining on all the positions of the part can be achieved, and the locating device has the very good generalization property.

The invention relates to a windshield universal vehicle type cleaning device. The device comprises a rubber bar and a clamping piece, wherein the rubber bar is connected with a steel bar. Connecting bases with wiper arm joints are connected with a flow guiding cover into a whole. The clamping piece is connected with the flow guiding cover through an embedding piece. The flow guiding cover consists of a main flow guiding cover and an auxiliary flow guiding cover. The rubber bar connected with the steel bar is connected to the clamping piece. The different connecting bases with wiper arm joints are connected with the main flow guiding cover in the detachable and replaceable way. The different wiper arm joints are connected with the main flow guiding cover in the detachable and replaceable way. The flow guide cover is a three-section structure. The invention has the advantages that the contact surface between the rubber bar and the window glass is larger and has better matching effect; the cleaning effect is better and the advantages of the wipers with skeletons or without skeletons are integrated; the strength is high, and the rigidity is good, therefore the torsion and deformation can not occur; the replaceable wiper arm joints or the different connecting bases with wiper arm joints are connected with the wiper arms and arranged on the vehicles of different types, therefore the limitation only suitable for one type of vehicles is changed, and the application range is widened; and the device has university, beautiful appearance and long service life.

The invention provides a preparation method of a bifunctional sulfur-doped cobalt oxide and sulfur, nitrogen and oxygen doped carbon in-situ composite electrode. Electro-deposition and air atmosphereannealing are used to prepare a sheet-like cobalt oxide array in-situ electrode. A forehead fluid containing thiourea and triton is loaded onto the surface of the cobalt oxide array in-situ electrode,dried and then annealed under a protective atmosphere. The product obtained by the technical scheme of the present invention has an excellent dual-function catalytic function of oxygen evolution reaction and oxygen reduction reaction, and owning a variety of high electro-catalytic active sites, including sulfur, nitrogen, oxygen doped active sites in carbon materials, other consequent lattice defects, a strong coupling interface between carbon materials and cobalt oxide, defect sides caused by sulfur-doped cobalt oxide, etc. are constructed. The excellent dual-function electrocatalyst has potential for application to fuel cells and zinc-air batteries.

The invention discloses a preparation method of a three-dimensional network-shaped tungsten carbide-carbon nanotube composite material. The preparation method comprises the steps of dissolving a tungsten source in a solvent in a microwave tube, placing the microwave tube in a microwave synthesis device after uniform stirring, and performing reaction for 40-60 minutes under 160-180 DEG C to obtain W18O49 with oxygen defect; and placing the W18O49 in a tubular furnace, performing carbonization at 700-900 DEG C under the atmosphere of a carbon source, and cooling the product to a room temperature under the atmosphere of nitrogen protection to obtain WC-CNTs particles. The preparation method is simple and practical to operate, a tungsten oxide with oxygen defect is used as a precursor, atomic diffusion is facilitated, and the carburization process is facilitated; and meanwhile, a carbon nanotube is grown on a tungsten substrate in an in-situ manner to form a complicated three-dimensional network structure taking WC small particles as branch points and a carbon tube as a framework, the WC particles can be effectively diffused, more contact surface between WC and pt is ensured, the conductivity of the composite material is integrally improved, the joint effect of the three parts is developed better, and an electrocatalytic effect is improved.

The invention discloses a high-power brushless electronic water pump. The high-power brushless electronic water pump comprises a shell, an isolation sleeve and an upper cover; a mounting cavity is formed between the isolation sleeve and the shell, a fluid cavity is formed between the isolation sleeve and the upper cover, a stator assembly and a PCB are fixed in the mounting cavity, and a rotor assembly is rotationally arranged in the fluid cavity; the rotor assembly comprises an impeller and a rotor shaft sleeve, the impeller is fixed to the upper end part of the rotor shaft sleeve, and an upper wear-resisting lubricating insert and a lower wear-resisting lubricating insert are concentrically embedded into the upper end and the lower end of the rotor shaft sleeve respectively; a rotor ironcore is fixed to the periphery of the rotor shaft sleeve, sintered Ru-Fe-B magnetic steel is evenly distributed on the circumference of the circle center of the rotor iron core, and a rotor sleeve shell is fixed outside the rotor shaft sleeve; the isolation sleeve is provided with a positioning center shaft, and the positioning center shaft is inserted into a center hole; and the shell is provided with a heat dissipation device connected with the PCB in a heat conduction mode, and the shell is provided with a patch plug connected with an external wire. The brushless electronic water pump canimprove the magnetism of a rotor, and therefore the power of the brushless electronic water pump is improved.

The invention provides a manufacturing method of a bifunctional copper, cobalt nitride and carbon in-situ composite electrode. An acicular cobalt oxide, copper oxide array in-situ electrode is manufactured by electrodeposition and air atmosphere annealing, and a dicyandiamide and a precursor fluid of triton or polyaniline is loaded onto the surface of a cobaltous oxide and copper oxide arrayin-situ electrode, and after drying, an annealing reaction is performed under a protective atmosphere. A product constructs a plurality of high electrocatalytic active sites, including nitrogen-doping active sites in a carbon material and other lattice defects caused thereby, and carbon material and copper, and cobalt nitride strong coupling interfaces. The composite electrode has excellent electrocatalytic oxygen evolution reaction and oxygen reduction reaction, and the excellent bifunctional electrocatalyst has a prospect for use in fuel cells and zinc-air batteries.

The invention discloses a guarding device for building construction used for a fence of a building construction site. The guarding device comprises a device main body which is of a boot-shaped structure and with the hollow interior. A first water inlet and a first water outlet are formed in the two sides of the length direction of the lower part of the device main body, wherein the first water inlet and the first water outlet communicate with the interior of the device main body. The first water inlet and the first water outlet are in detachable and inserted connection with first pipe plugs. The side of the width direction of the device main body is a flat side, and the upper part of the flat side is rotationally provided with a connecting plate. One end of the connecting plate is rotationally connected with the edge of the horizontal direction of the flat side of the device main body. The other end of the connecting plate is provided with a pair of opposite connecting holes. The otherside, adapted to the arranged height of the connecting plate, of the flat side is provided with a connecting column, wherein the size of the connecting column is adapted to the size of the connectingholes. After a plurality of device main bodies are arranged in rows, the connecting holes of each connecting plate can be in inserted and connected fit with the corresponding connecting column of theadjacent device main body by overturning the corresponding connecting plate, so that the device main bodies are connected and fixed to one another side by side.

The invention belongs to the technical field of wind power generation, and relates to a fan blade manufactured by using a fan blade frame. The frame comprises supporting rods and a beam, and a middleshaft of the frame is provided with a through hole, wherein the supporting rod is in a waney arc structure, a rotation shaft connecting end of the arc structure is connected to the middle part of thebeam, and the outer diameter and the wall thickness of each supporting rod are gradually reduced. The beam is a U-shaped arc, and the end face of a rotation shaft connecting end of each supporting rodis provided with a plurality of connection holes which are fixedly connected with a plurality of rotation shafts. The upper parts and the lower parts of the supporting rods of the frame are twisted to form a twisted frame. The invention has the advantages of more contact surfaces with natural wind, high wind energy utilization rate, good stability due to the double-rod connection with the rotation shafts, length reduction compared with other fan blades with the same power and great cost reduction. The fan blade frame is of a detachable type and can be transported detachably when required to be transported, thus the fan blade frame is convenient to transport.

The invention discloses an effective integrated wastewater treatment process and device and belongs to the technical field of environment engineering. By adopting the effective integrated wastewater treatment device, after the sewage flowing into the integrated treatment device, the sewage is processed by anoxic-anaerobic-aerobic-secondary anoxic-secondary aerobic biochemical reaction zones, and the processing effect of intensifying the ammonia nitrogen and phosphorous can be reached. The rural domestic wastewater is processed by the effective integrated wastewater treatment device, and the emission standard reaches the primary B standard. The integrated device is one-time shaped, is compact in structure, high in integration degree and convenient in operation management and is suitable for the dispersed and centralized treatment of the rural domestic wastewater.

The invention discloses a method for preparing ethyl caprate, and a stirring apparatus for preparing ethyl caprate. The structure of the apparatus comprises a pedestal, a vertical bracket and a stirring rod, the vertical bracket is arranged on the pedestal, the vertical bracket is connected with the stirring rod through a connecting piece, the vertical bracket is provided with a lifting device for lifting the connecting piece, the connecting piece is provided with a power device for making the stirring rod rotate, the stirring rod is provided with three blades, the three blades are uniformly distributed on the stirring rod in a circumferential manner, and the blades comprise a first blade and second blades connected with the first blade. At least one reinforcing rib is arranged between adjacent second blades, and components are connected through screws and fixed through nuts. The stirring position of the apparatus can be adjusted, so it is in favor of fully stirring a material; and the blades have the characteristics of simple structure, operation safety and large surface of contact with the material, so the material mixing uniformity can be effectively improved, and the stirring efficiency is improved, thereby the yield of ethyl caprate is improved.

The invention provides a method for preparing a bifunctional cobalt, nitrogen and oxygen doped carbon in-situ composite electrode. Electro-deposition and air atmosphere annealing are used to prepare asheet-like cobalt oxide array in-situ electrode. A forehead fluid containing dicyandiamide and triton is loaded onto the surface of the cobalt array in-situ electrode, dried and then annealed under aprotective atmosphere. The triton is gradually dehydrogenated, deoxidized and partially graphitized to form a carbon material under the protective atmosphere, and since the triton contains a large amount of oxygen, a large amount of oxygen is incorporated into the carbon materials in the form of an ether group, a carbonyl group or a carboxyl group. The ammonia gas generated by the decomposition of dicyandiamide causes the carbon material to be doped with nitrogen while reducing the cobalt oxide to cobalt particles. The product of the invention constructs a plurality of high electrocatalytic active sites, including nitrogen and oxygen doped active sites in the carbon materials, other lattice defects caused thereby, strong coupling interfaces of carbon materials and cobalt, etc., so that oxygen evolution reaction and oxygen reduction reaction through electro-catalysis is realized. The dual-function electrocatalyst has prospects of application in fuel cells and zinc-air batteries.

The invention provides a GaN-based LED and a method for manufacturing the GaN-based LED. The method for manufacturing the GaN-based LED comprises the following steps: (a) an n-type GaN, a multi-quantum well and a p-type GaN are successively formed on a substrate; (b) a transparent conductive layer is formed on the p-type GaN; (c) mesa etching is performed on one part of the transparent conductive layer, the p-type GaN and the multi-quantum well until one part of the n-type GaN is exposed; (d) an oxide protective layer is formed on the transparent conductive layer and the exposed part of the n-type GaN; (e) the oxide protective layer is etched on a position with no mesa etching so that one part of the transparent conductive layer is exposed, and the oxide protective layer is etched on the position with mesa etching so that one part of the n-type GaN is exposed; (g) and a p electrode and an n electrode are formed on a rough surface and the part that n-type GaN is exposed respectively. The probability and the degree of losing an electrode can be reduced by using the GaN-based LED.

The invention relates to a motor base with a good heat dissipation effect, which can be applied to a machine tool. The motor base comprises an axle hole seat, a connecting chamber and a base, whereinthe axle hole seat is provided with a first channel, the connecting chamber is provided with second channels, the base is provided with third channels, the first channel, the second channels and the third channels are sequentially communicated, and a fluid medium can pass through the first channel, the second channels and the third channels to realize the cooling of the motor base. Heat dissipation can be performed on the motor base through the forced cooling. In addition, the outer surface of the axle hole seat of the motor base has a polygon structure, which can also play a better heat dissipation effect.

The invention provides a pot bottom multi-layer pressing production process which comprises the following processing steps of: 1, stretching a steel metal plate to form a pot body, inverting the pot body, and enabling the pot bottom to face upwards; 2, heating a metal net to 1100-1400 DEG C, and then placing the metal net on the pot bottom; 3, jointly heating the metal net and the pot bottom to allow the temperature of the metal net to reach 1400-1600 DEG C, and pressing the heated metal net and the heated pot bottom together through a pressing head on the upper portion; 4, stopping heating, placing an aluminum plate on the metal net, and continuously pressing the aluminum plate on the pot bottom through the pressing head; and 5, cooling the pot body and taking out the pot body. Accordingto the technology, the metal net is heated to be pressed to the pot bottom, meanwhile, waste heat is used for melting and pressing the aluminum plate, and the overall shape of the pot bottom after being attached is guaranteed. And more contact surfaces are formed between the aluminum plate and the pot body, so that the aluminum plate and the pot body are attached more tightly.

The invention discloses a ventilated heat-dissipating barn comprising a barn body, a cover and a barn bottom. A vent tube passing through the barn bottom and the cover is disposed in the barn body. The section of the vent tube is round or square. The side wall of the vent tube is provided with vent holes. The top of the vent tube is provided with a vent tube cap. The vent tube comprises two branch vertical tubes and a master tube. The branch vertical tubes are disposed side by side, while the bottoms of the branch vertical tubes pass through the barn bottom and the tops of the branch vertical tubes are communicated. The bottom of the master tube is communicated with the branch vertical tubes, and the top of the master tube passes through the cover. The vent tube in the barn body comprises the branch vertical tubes and the master tube, the branch vertical tubes are disposed side by side, area of contact with grains in the barn body is increased, and heat and moisture generated by the grains in the barn body can by discharged faster; an exhaust fan is mounted at the barn bottom, the air outlet side of the exhaust fan is close to the communicated positions of the branch vertical tubes with the barn bottom, air ventilation in the barn body can be more enhanced by switching on the exhaust fan to ventilate, and the ventilated heat-dissipating barn is better in ventilation and heat dissipation.

Disclosed is a seasoning box cooperatively used for a rice cooker. The seasoning box is provided with a flat box hidden to the inner bottom (18) of the rice cooker (16), the flat box is composed of anupper cover (1) and a lower cover (4), the outer surfaces of the upper and lower covers are through stainless steel meshes (20), and the inner surfaces of the upper and lower covers are gauze net layers (19) covering the stainless steel meshes; seasoning packets (3) are contained inside the flat box, and supporting feet (21) are arranged on the periphery of the lower cover of the flat box; duringrice cooking, rice together with various seasonings can be cooked according to the requirement of a consumer, the taste of the rice can be changed, the obtained rice has other tastes and smells, andthe taste is uniform.

The invention provides a fabricated inorganic mineral plate leveling and mounting structure. The fabricated inorganic mineral plate leveling and mounting structure comprises a plurality of main keels,auxiliary keels, a floor body and edge closing strips. The main keels are fixedly connected to a ground base layer and arranged in parallel, and the auxiliary keels are perpendicular to the main keels and located between every two adjacent main keels. Bosses are arranged at the two ends of the auxiliary keels, clamped into the first clamping grooves in the side walls of the main keels, and fixedly connected with the bottoms of the first clamping grooves through corner connectors. The main keels and the auxiliary keels are arranged in a staggered mode to form a latticed base layer framework, so that the floor has more contact faces to serve as supports, the stability of the mounting structure is improved, the bearing capacity is high, and stable mounting of inorganic mineral plates with the thickness of 30 mm or above is guaranteed. Through the modular main and auxiliary keel design, mounting grooves suitable for the floor specification can be rapidly built, the construction process issimple, and the mounting efficiency is greatly improved.

The invention belongs to the technical field of civil engineering construction and relates to an anti-sliding device for a large-gradient shield tunneling machine. The anti-sliding device comprises afixing block, a tensioning mechanism, a swing arm mechanism and an anti-sliding damping block; the anti-sliding damping block and the fixing block are connected through the swing arm mechanism; the two ends of the swing arm mechanism are hinged to the anti-sliding damping block and the fixing block correspondingly, thus a hinge structure is constituted by the fixing block, the swing arm mechanismand the anti-sliding damping block; the fixing end of the tensioning mechanism is connected with the fixing block, the tensioning movable end of the tensioning mechanism is connected with the swing arm mechanism, and the tensioning movable end pushes the swing arm mechanism to rotate and then drives the anti-sliding damping block to move; the swing arm mechanism comprises a first swing arm and a second swing arm which are parallel mutually; and the two ends of the first swing arm and the two ends of the second swing arm are hinged to the anti-sliding damping block and the fixing block throughrotating shafts correspondingly, and a quadrilateral hinge structure is constituted by the fixing block, the first swing arm, the second swing arm and the anti-sliding damping block. The structure issimple, the shield tunneling machine can be prevented from sliding downwards, and tunneling of the shield tunneling machine is stable and safe.

The present invention discloses a photothermal radiometry device. The device comprises an upper radiating body, a heating body arranged on the upper heating body, and a lower radiating body matched with the upper heating body. The heating body is installed between the upper radiating body and the lower radiating body. The photothermal radiometry device comprises the upper radiating body, the heating body arranged on the upper heating body, and the lower radiating body matched with the upper radiating body. The heating body is installed between the upper radiating body and the lower radiating body.

The invention discloses a guarding device for building construction used for a fence of a building construction site. The guarding device comprises a device main body which is of a boot-shaped structure and with the hollow interior. A first water inlet and a first water outlet are formed in the two sides of the length direction of the lower part of the device main body, wherein the first water inlet and the first water outlet communicate with the interior of the device main body. The first water inlet and the first water outlet are in detachable and inserted connection with first pipe plugs. The side of the width direction of the device main body is a flat side, and the upper part of the flat side is rotationally provided with a connecting plate. One end of the connecting plate is rotationally connected with the edge of the horizontal direction of the flat side of the device main body. The other end of the connecting plate is provided with a pair of opposite connecting holes. The otherside, adapted to the arranged height of the connecting plate, of the flat side is provided with a connecting column, wherein the size of the connecting column is adapted to the size of the connectingholes. After a plurality of device main bodies are arranged in rows, the connecting holes of each connecting plate can be in inserted and connected fit with the corresponding connecting column of theadjacent device main body by overturning the corresponding connecting plate, so that the device main bodies are connected and fixed to one another side by side.

The invention provides a GaN-based LED and a method for manufacturing the GaN-based LED. The method for manufacturing the GaN-based LED comprises the following steps: (a) an n-type GaN, a multi-quantum well and a p-type GaN are successively formed on a substrate; (b) a transparent conductive layer is formed on the p-type GaN; (c) mesa etching is performed on one part of the transparent conductive layer, the p-type GaN and the multi-quantum well until one part of the n-type GaN is exposed; (d) an oxide protective layer is formed on the transparent conductive layer and the exposed part of the n-type GaN; (e) the oxide protective layer is etched on a position with no mesa etching so that one part of the transparent conductive layer is exposed, and the oxide protective layer is etched on the position with mesa etching so that one part of the n-type GaN is exposed; (g) and a p electrode and an n electrode are formed on a rough surface and the part that n-type GaN is exposed respectively. The probability and the degree of losing an electrode can be reduced by using the GaN-based LED.

The invention discloses a preparation method of a three-dimensional network-shaped tungsten carbide-carbon nanotube composite material. The preparation method comprises the steps of dissolving a tungsten source in a solvent in a microwave tube, placing the microwave tube in a microwave synthesis device after uniform stirring, and performing reaction for 40-60 minutes under 160-180 DEG C to obtain W18O49 with oxygen defect; and placing the W18O49 in a tubular furnace, performing carbonization at 700-900 DEG C under the atmosphere of a carbon source, and cooling the product to a room temperature under the atmosphere of nitrogen protection to obtain WC-CNTs particles. The preparation method is simple and practical to operate, a tungsten oxide with oxygen defect is used as a precursor, atomic diffusion is facilitated, and the carburization process is facilitated; and meanwhile, a carbon nanotube is grown on a tungsten substrate in an in-situ manner to form a complicated three-dimensional network structure taking WC small particles as branch points and a carbon tube as a framework, the WC particles can be effectively diffused, more contact surface between WC and pt is ensured, the conductivity of the composite material is integrally improved, the joint effect of the three parts is developed better, and an electrocatalytic effect is improved.

The invention relates to the technical field of heat exchangers, and provides a displacement heat exchanger which comprises a tank body, a first heating mechanism and a second heating mechanism, wherein the tank body is provided with a first cavity and a first outlet; the first heating mechanism and the second heating mechanism are of the same structure, are evenly arranged in the circumferential tangential direction of the tank body and are each provided with a second cavity; the second cavities and the first cavity are communicated and each comprise a main body arranged on the tank body; a blocking piece is arranged in the first cavity; a heating coil is arranged in each second cavity, abuts against the blocking piece and provided with a second inlet and a second outlet; a first baffle plate is arranged at an inlet of each second cavity through a fastener and provided with a first inlet; and each second inlet and each second outlet penetrate through each first baffle plate. By means of the technical scheme, the problem that in the prior art, the temperature of flue gas is kept stable before the flue gas enters a selective catalytic reduction (SCR) reactor is solved.

A suspension thrust bearing device provides a lower support cap, an upper bearing cap and at least one bearing arranged between the caps. The lower support cap includes a rigid main body in contact with the bearing, and a flexible vibration damping seat delimiting a bearing surface for the upper end of a suspension ring. The vibration damping seat of the lower support cap is secured to the main body and is provided with at least one retaining hook extending at least in the radial direction and axially offset with respect to the bearing surface on the side opposite to the bearing.

The invention discloses a double-rotation planer tool for planing grafted scion branches. The double-rotation planer tool for planing the grafted scion branches comprises a rotation tool rest, two rotation planer tools, two positioning shafts, an inner gear seat frame, a rotation handle, an outer shell and a fixing clamp; the grafted scion branches are inserted into a pipe opening, the fixing clamp fixes the branches, a rotation crank drives the rotation tool rest and the rotation planer tools to rotate at the same time; a small bevel gear below the rotation planer tools is engaged in an innerbevel gear and rotates in the inner bevel gear, then the rotation planer tools are driven to rotate, and the branches are planed to have a taper; due to the fact that a front angle of the opening ofthe rotation planer tools is large, the two tools rotate equally by 180 degrees, the taper formed by the scion branches is not deviated, and the surface smoothness is high; and grafting work is completed by inserting a hole drilled in a stock through a drill bit with the same taper, the process is simple and easy, the grafting contact surface is large, and rapid survival and high survival rate areachieved.