68results about How to "Extended path" patented technology

The invention discloses a micro-channel reactor and micro-channel reaction equipment, the micro-channel reactor comprises a reaction plate, a support transition plate and a heat exchange plate which are connected in a laminated manner, grooves are processed in the reaction plate to form micro-reaction channels, grooves are processed in the heat exchange plate to form heat exchange channels, and the support transition plate is separated between the reaction plate and the heat exchange plate; the micro-reaction channel comprises at least two micro-channel units and a middle flow channel connected with the adjacent micro-channel units, each micro-channel unit comprises a flow channel inlet, a flow channel outlet and a heart-shaped mixing cavity, an arc-shaped flow baffle and at least one turbulent flow column are arranged in the heart-shaped mixing cavity, the concave side of the arc-shaped flow baffle faces the flow channel inlet, and the convex side of the arc-shaped flow baffle faces the turbulent flow column. And the turbulent flow column is arranged between the arc-shaped flow baffle and the flow channel outlet. Through cooperation of the heart-shaped mixing cavity, the arc-shaped flow baffles and the turbulent flow columns, the particle suspension rate and the mass transfer capacity of the micro-reaction channel are effectively improved, then the reaction efficiency is improved, and the device can be used for achieving continuous preparation of nano-drugs.

This utility model relates to the field of pipeline technology, specifically to a compressor venting and noise reduction pipeline and its noise reduction system. The compressor venting and noise reduction pipeline includes: an exhaust pipeline, a bend downstream of the exhaust pipeline, a branch pipeline downstream of the bend, an output pipeline downstream of the branch pipeline, and a silencer downstream of the output pipeline. The silencer includes a spiral flow guiding device. This utility model reduces the velocity of the medium flow by using the bend, branch pipeline, and silencer, consuming part of the kinetic energy of the medium flow, thereby reducing the noise generated by the medium colliding with the pipe wall during discharge and reducing the safety risks to on-site personnel.

This invention discloses a DLC diamond coating, its preparation, and its application method, relating to the field of diamond-like carbon coating technology. Specifically, it includes the following steps: Step S1, substrate graded cleaning and ion etching pretreatment; Step S2, in-situ synthesis of a Ti-TiC-SiC gradient transition layer; Step S3, construction of a silicon / boron co-doped nanocomposite functional layer. This invention alleviates interfacial stress by constructing a gradient transition layer, utilizes a periodic modulation process to form a soft-hard alternating nanolayered structure, and combines a silicon-boron co-doping strategy; effectively solving the problems of high internal stress, poor adhesion, and easy high-temperature failure in coatings, achieving a balance between high hardness, high toughness, and excellent high-temperature wear resistance.

The invention discloses a treatment system for synergistically removing odor substances and a new pollutant PFAS in water and a treatment method thereof. The treatment system comprises a pre-oxidation unit, an algae removal, adsorption and clarification unit, a membrane separation and concentration unit and a destruction unit which are connected in sequence. The pre-oxidation unit is provided with an oxidation pond with a transverse reciprocating dynamic aeration assembly, so that the ozone mass transfer efficiency is improved. The algae removal, adsorption and clarification unit enables a suspended carbon mud bed to periodically expand and contract through a pulse generator so as to strengthen adsorption. The membrane separation and concentration unit adopts a modified polyether sulfone conical-end filtering membrane and is matched with an online cleaning mechanism, so that PFAS is efficiently intercepted, and secondary pollution is avoided. The destroying unit is used for carrying out synergetic high-temperature incineration on the membrane separation concentrated water and the waste carbon mud, and PFAS is thoroughly decomposed at the temperature higher than or equal to 900 DEG C; by optimizing ozone aeration, pulse adsorption, fluorine-free membrane separation and collaborative incineration, efficient collaborative removal of odor substances and new pollutant PFAS and harmless treatment of waste are achieved, the system integration degree is high, the treatment effect is good, and the risk of secondary pollution is avoided.

This application relates to the field of slitting technology, providing a lower cutter shaft and a lower cutter shaft edge-cutting assembly for an aluminum foil slitting machine. The lower cutter shaft includes a shaft core, an isolation sleeve fitted on the shaft core, and lower blades fitted on the shaft core and located at both ends of the isolation sleeve. It also includes a cutter groove sleeve fitted on the shaft core and located outside the lower blades. The cutter groove sleeve includes an annular portion and a truncated cone portion. The larger diameter end of the truncated cone portion faces the lower blade, and the smaller diameter end of the truncated cone portion is connected to the annular portion. A cutter groove is formed between the lower blade and the annular portion. This invention overcomes the problem in existing aluminum foil slitting machines where waste edges easily get stuck in the cutter groove when the cutting edge is narrow, causing blockage. This invention increases the waste edge passage path, stabilizes the waste edge falling path, and greatly reduces product quality loss costs caused by waste edge entanglement.

The utility model discloses an automatic smoke purifying and collecting device for metal processing and welding, which comprises a machine body, and a decomposition bin, an adsorption bin and a filtering bin which are uniformly arranged in the machine body through partition plates, and further comprises a smoke collecting component, the smoke collecting assembly comprises an L-shaped pipeline installed on the top of the machine body through a connecting base and a smoke sucking cover arranged at the bottom of one end of the L-shaped pipeline through a telescopic corrugated pipe. The filter box is arranged in the filter bin and below the exhaust hood; the adsorption box is arranged in the adsorption bin below the filtering bin; and the catalysis box is arranged in the decomposition bin below the adsorption bin. Through the arrangement of the L-shaped pipeline and the smoke sucking cover in the smoke collecting assembly, smoke generated in the welding process can be effectively sucked in, and diffusion of the smoke in the working environment is avoided. The servo motor drives the L-shaped pipeline to rotate, and flexible adjustment of the smoke suction hood is achieved through meshing of the driving gear and the gear ring.

The application discloses a modified layered nanoclay sheet / polyurethane composite coating and a preparation method thereof, and belongs to the technical field of coatings; namely, the modified layered nanoclay sheet and polyurethane are used to prepare the modified layered nanoclay sheet / polyurethane composite coating by adopting a physical crosslinking method; wherein the modified layered nanoclay sheet is prepared by sequentially performing acid activation and surface modification treatment on nanoclay. The application solves the problems of insufficient weather resistance and adhesion and poor storage stability of the existing polyurethane coating, and also reduces the cost. In addition, the modified layered nanoclay sheet / polyurethane composite coating prepared by the application has excellent corrosion resistance and mechanical properties.

This utility model discloses an optimized structure for an aluminum alloy heat exchanger, relating to the field of heat exchanger technology. It includes a top plate, a partition plate attached to the bottom side of the top plate, and several sequentially stacked flow channel layers attached to the bottom side of the partition plate. A bottom plate is attached to one side of each flow channel layer. Several flow distribution ports are symmetrically arranged on the flow channel layers. Mutually perpendicular heat exchange mechanisms are provided on both sides of the flow channel layers. Each heat exchange mechanism includes a flow distribution groove connected to the corresponding flow distribution port, one end of which is connected to a mixing groove. Several corrugated heat exchange plates are installed between the two sets of mixing grooves of the heat exchange mechanism. Several flow distribution plates are installed within the heat exchange mechanism. This utility model solves the problems of low utilization rate and low heat exchange efficiency of the flow channel layers caused by the gaps in the diffusion grooves in the prior art. This utility model increases the path of the medium flow by using corrugated heat exchange plates, and the heat exchange plates of adjacent flow channel layers are arranged at intervals, increasing the heat exchange area between the flow channel layers and the medium, thereby improving the heat exchange efficiency.

The utility model relates to the technical field of anthocyanin extraction equipment, in particular to anthocyanin molecular-level extraction equipment which comprises a charging barrel, a barrel cover and a driving motor arranged at the top end of the barrel cover, a filter plate is fixed at the bottom end of the barrel cover, a rotating shaft is fixed in the middle of the top end of the filter plate, and the outer side of the bottom end of the rotating shaft is fixedly connected with the inner side of a ramp plate. The top end of the rotating shaft is fixedly connected with the square shaft, the top end of the square shaft is fixedly connected with the output end of the driving motor, the rotating shaft is sleeved with the connecting cylinder, and the pressing roller is fixed between the connecting cylinder and the cylinder cover, so that the lifting / descending and rotating functions of the rotating shaft are not affected; compared with a traditional roller type crushing device, the device has the advantages that materials are fully crushed and squeezed, raw material juice is squeezed, subsequent anthocyanin extraction is facilitated, the primary treatment function is achieved, and compared with an existing structure, the device has the functions of squeezing for multiple times, prolonging the crushing time and path and further improving the crushing effect.

The utility model provides a kind of inspection robot, and inspection robot includes: fuselage, tracked mobile chassis, threading component, information acquisition component, controller, power component and navigation module;Tracked mobile chassis includes two tracks, and two tracks are arranged in the both sides of fuselage, and with fuselage movably connected;Threading component and information acquisition component are respectively arranged in the both ends of fuselage, and threading component is fixedly connected with fuselage, and information acquisition component includes infrared camera, and infrared camera is movably connected with fuselage;Controller, power component, navigation module are respectively fixedly connected with fuselage;Tracked mobile chassis, information acquisition component, threading component, navigation module are respectively electrically connected with controller;Tracked mobile chassis, information acquisition component, threading component, navigation module are respectively electrically connected with power component.Inspection robot has the moving ability of adapting complex environment and the work ability of efficient cooperation, and can satisfy the automatic inspection demand under various scenes.

This utility model discloses a heat dissipation cabinet for a generator excitation control device, comprising: a cabinet body, several partition components, and a heat dissipation component. The cabinet body is provided with an air inlet and an air outlet communicating with the interior. The several partition components are sequentially and spaced apart inside the cabinet body along the ventilation direction from the air inlet to the air outlet, dividing the inner cavity of the cabinet body into multiple sequentially arranged heat dissipation ducts. Each partition component forms an air guide between itself and the inner wall of the cabinet body, and each air guide is alternately arranged on different sides of the cabinet body along the ventilation direction. The heat dissipation component is installed inside the cabinet body and corresponds to the heat dissipation ducts, used to drive airflow from the air inlet to the air outlet in a directional manner. This device can ensure that the airflow is evenly distributed inside the cabinet body, avoid local overheating problems, significantly improve heat dissipation efficiency, and improve the operational stability and reliability of power electronic equipment such as generator excitation control devices.

The invention belongs to the technical field of coatings, and particularly relates to a green and environment-friendly coating and a preparation method thereof. Comprising the following steps: (1) modifying a zeolite molecular sieve by adopting an amino silane coupling agent; (2) carrying out heating reaction on the carboxylated carbon nanotube and the modified zeolite molecular sieve, carrying out vacuum filtration, and drying to obtain a carboxylated carbon nanotube modified zeolite molecular sieve; and (3) uniformly mixing the waterborne polyurethane dispersion liquid, the carboxylated carbon nanotube modified zeolite molecular sieve and a coating additive to obtain the green and environment-friendly coating. According to the invention, a coupling agent is utilized to modify a zeolite molecular sieve, then a multi-dimensional enhanced network is constructed through reaction with functionalized carbon nanotubes, and the multi-dimensional enhanced network is added into a waterborne polyurethane matrix as a modifier, so that the path of corrosion factors is prolonged, and the interface bonding force between a filler and resin is enhanced; micro-permeation channels caused by interface gaps are reduced, so that the performance of the waterborne polyurethane coating is improved.

This utility model discloses a set-top box mold with a delayed annular cooling structure, comprising: a mold body and a cooling assembly; the mold body includes an upper mold and a lower mold at its upper and lower ends; the cooling assembly includes a movable plate movably mounted on the top of the lower mold and a module fixedly disposed in the middle of the movable plate. The set-top box mold with a delayed annular cooling structure of this utility model has side cooling ports and bottom cooling ports on the sides and bottom of the module. Side cooling channels and bottom cooling channels installed inside are respectively located on the sides and bottom of the mold cavity, thus enabling simultaneous annular cooling of the sides and bottom during cooling within the mold cavity, improving the uniformity of cooling. Simultaneously, the bottom cooling channel with a curved, surrounding shape extends the cooling path and time. Furthermore, the movable plate at the outer end of the module is movably mounted to the upper part of the lower mold by screws, facilitating the disassembly and assembly of the module for convenient maintenance and repair of its outer and bottom cooling channels.

The invention discloses a constant-temperature cyclic heating and efficient stir-frying integrated cooker structure, which aims to solve the problems of non-uniform heating and single stir-frying action of the existing cooker, and comprises a machine table, a stir-frying pan mounted in a groove of the machine table, and a thermal insulation layer covering the outer part of the bottom end of the stir-frying pan and forming a hot air channel with the outer wall of the stir-frying pan. A heating bin is arranged in the machine table, an electric heating plate is arranged in the heating bin, the electric heating plate and the hot air channel form a closed circulating air channel through an air inlet pipe and an air outlet pipe, and a stir-frying assembly is arranged over the stir-frying pan and comprises an elastic rubber column driven by a push rod motor to ascend and descend and driven by a rotating motor to rotate and a stir-frying frame fixed to the tail end of the elastic rubber column. Uniform constant-temperature heating is achieved through closed hot air circulation, meanwhile, the stir-frying frame which can be lifted and rotated and has the elastic tail end is used for simulating complex stir-frying actions, closed-loop cooperative control over the heating and stir-frying processes is achieved in combination with the temperature sensor and the controller, and the cooking uniformity, the finished dish quality and the automation degree are effectively improved.

This invention discloses a tensile-strength steel-cored aluminum stranded wire, relating to the technical field of steel-cored aluminum stranded wire. The tensile-strength steel-cored aluminum stranded wire of this invention comprises at least: a steel core; a Zn-Ni-WC composite coating, electroplated on the steel core; aluminum strands, stranded on the steel core coated with the Zn-Ni-WC composite coating; and an anti-corrosion coating applied to the stranded aluminum strands. The anti-corrosion coating comprises the following raw materials in parts by weight: 60-70 parts of long-chain modified polyurethane acrylate prepolymer; 25-30 parts of acrylate isoborneol ester; 15-20 parts of dopamine-modified sustained-release microcapsules; 2-5 parts of photoinitiator; 0.5-1.5 parts of leveling agent; and 0.5-1.5 parts of dispersant. This invention, by setting a Zn-Ni-WC composite coating on the steel core and an anti-corrosion coating on the steel-cored aluminum strands, enables the prepared tensile-strength steel-cored aluminum stranded wire to possess superior corrosion resistance and ultra-long-term tensile strength retention.

The utility model relates to the technical field of edible oil processing discloses an edible oil oil material screening and impurity removing device, including frame, the side of frame near the discharge port is provided with winnowing mechanism, the frame is provided with the guide chute that sets up up and down through, the first coarse screen mesh board is inclinedly arranged in the guide chute, the first coarse screen mesh board is from the discharge hole on the guide chute and is worn, the second coarse screen mesh board is inclinedly arranged below the first coarse screen mesh board, the outlet end of second coarse screen mesh board is provided with the dirty groove, the frame below the guide chute and the first coarse screen mesh board is provided with the fine screen mesh board, the fine screen mesh board bottom is provided with vibration motor, the utility model discloses, can reduce the probability that oil material is discharged with big granule impurities in the coarse screening process, also does not increase the floor area of equipment too much, compact structure, strong practicality.

The application relates to the field of metal casting equipment, and discloses a crystallizer for preparing red copper ingot, which comprises a crystallizer body and a liquid storage tank. A crystallization layer is arranged in the crystallizer body. A cooling cavity is formed between the crystallization layer and the crystallizer body. An inner cooling pipe is arranged in the cooling cavity. An outer cooling channel is arranged on the inner wall of the crystallizer body. The outer cooling channel and the inner cooling pipe are both arranged in a spiral mode. A convection conveying assembly is mounted on the outer wall of the liquid storage tank. The convection conveying assembly comprises a first suction pump and a second suction pump. In the utility model, the cooling liquid is conveyed in opposite directions by the convection conveying assembly. The outer cooling channel and the inner cooling pipe are arranged in a spiral mode and are staggered with each other. The contact area and the path of the cooling liquid and the crystallization layer are greatly increased. Each part of the crystallization layer is uniformly and efficiently cooled. Stress concentration, cracks, shrinkage holes and other defects in the red copper ingot are avoided. The mechanical properties and the processing performance of the ingot are remarkably improved.

The utility model discloses a kind of plastic bottle embryo mould embryo process generation waste gas treatment devices, belong to waste gas treatment technical field;Including purification tank, the purification tank is provided with inlet pipe and outlet pipe, it further includes first activated carbon layer and second activated carbon layer, the first activated carbon layer and second activated carbon layer respectively include multiple activated carbon purification cylinder, the activated carbon purification cylinder is rotatably connected with purification tank, and the activated carbon purification cylinder of first activated carbon layer and second activated carbon layer is staggered arrangement;The utility model is set using cylindrical adsorption structure, and is set multiple, increase the contact area and path of waste gas and activated carbon, make adsorption more fully, effectively promote waste gas purification effect, motor drives activated carbon cylinder rotation, so that activated carbon all-round contact waste gas, fully exert adsorption capacity, avoid resource waste.

The utility model relates to the technical field of composite metal plate, concretely relates to a kind of multi-flexibility layer metal wear-resistant lining, including substrate layer, the outside of substrate layer is sequentially provided with transition layer and wear-resistant layer according to from inside to outside, wear-resistant layer is alternately superimposed and is constituted by high-hardness layer and toughness buffer layer, the outermost layer of wear-resistant layer is high-hardness layer;High-hardness layer is high-chromium alloy or tungsten-based hard alloy;Toughness buffer layer is low alloy steel.The utility model designs wear-resistant layer as the structure of high-hardness layer and toughness buffer layer alternately superimposed, impact energy is absorbed using toughness buffer layer, crack formation is reduced under high impact working condition and crack propagation is effectively suppressed, and the wear resistance of multi-flexibility layer metal wear-resistant lining is significantly improved.

The application discloses a driving substrate and a display panel. The driving substrate comprises a substrate, a first gate, a first gate insulating layer, an active layer, a passivation layer, a source and a drain. The first gate is arranged on the substrate. The active layer is arranged on the substrate. The first gate insulating layer is arranged between the active layer and the first gate. The first gate insulating layer comprises a first barrier layer, a second barrier layer and a third barrier layer arranged in sequence. The adhesion between the first barrier layer and the second barrier layer and / or the adhesion between the second barrier layer and the third barrier layer is greater than the adhesion between the first barrier layer and the third barrier layer. The passivation layer is arranged on the substrate. The source and the drain are arranged on the passivation layer and are electrically connected to the active layer respectively.

This invention discloses an electromagnetic pulse welding coil for welding tubular metals. The electromagnetic pulse welding coil is arranged circumferentially along a driving tube. The driving tube can obtain Lorentz force through electromagnetic induction of the electromagnetic pulse welding coil, providing the impact velocity for welding. The electromagnetic pulse welding coil is composed of several circumferentially connected "convex"-shaped structures. The "convex"-shaped structures are arranged with an inward rotation of 90°, and the wide end at the outer end has a notch. One side of the notch is connected to the other side of the notch of the adjacent "convex"-shaped structure through a connecting block, thereby connecting all the "convex"-shaped structures into a whole, forming a ring structure around the driving tube. This invention has the advantages of significantly improving the electromagnetic energy utilization efficiency, increasing electromagnetic energy, and being applicable to electromagnetic pulse welding of difficult-to-deform metals.

This invention relates to a nebulized drug delivery device for use with Eustachian tube insufflation, belonging to the field of medical device technology. Addressing the limitations of clinical treatment for secretory otitis media and Eustachian tube dysfunction, this invention comprises a nasal plug assembly, a nebulized drug cup, a Eustachian tube insulator, and a nebulizer. The nebulized drug cup is connected to the nasal plug assembly, and the Eustachian tube insulator is connected to one end of the nasal plug assembly's air inlet. The nebulized drug cup is connected to the nebulizer via a tubing. The nasal plug assembly includes dual nasal plug heads and a delivery tube, with the nebulized drug cup integrally connected to the sidewall of the delivery tube. This invention combines Eustachian tube insufflation with nebulized drug delivery, directly delivering medication to the Eustachian tube and middle ear cavity while the Eustachian tube is dilated. Furthermore, the dual nasal plug heads can simultaneously insulate and deliver medication to both nasal cavities and the Eustachian tube, ensuring safety and effectiveness during use while improving ease of operation and efficiency.

The utility model discloses a motor, comprising a bearing bush cover which is provided with an air inducing surface; the rotor is provided with a rotating shaft, and the rotating shaft is rotatably arranged in the bearing bush cover in a penetrating manner; the air inducing baffle is fixedly connected to the rotating shaft, and the air inducing baffle and the air inducing face are oppositely arranged; wherein one of the air inducing face and the air inducing baffle is provided with an annular groove, the other one of the air inducing face and the air inducing baffle is provided with a protrusion, and the protrusion can stretch into the annular groove and rotate in the annular groove so as to disturb air flow between the air inducing baffle and the air inducing face. According to the utility model, the bulge rotates in the annular groove to generate turbulent flow and a high-pressure environment between the air inducing baffle and the air inducing surface, and the turbulent flow and the high-pressure environment in the area resist the direct pumping of negative pressure formed by a cooling fan to the bearing bush seat, so that the phenomena of oil leakage and the like of a sealing part of the bearing bush seat in the negative-pressure environment are avoided.

This application discloses a chemical reagent drying device, belonging to the field of drying technology. The chemical reagent drying device includes a placement platform, inside which a drying mechanism is located. A fixed cover is positioned above the drying mechanism, and a vent pipe is fixedly inserted into the upper end of the fixed cover. A guide ring is fixedly connected to the lower part of the inner wall of the fixed cover. Continuous heating is provided by a heating cylinder, and a stirring blade driven by a motor rotates, ensuring uniform heating of the chemical reagent and accelerating internal moisture evaporation. The stirring process avoids localized overheating or insufficient drying, ensuring consistent drying results. The threaded grooves on the inner wall of the drying cylinder guide the chemical reagent to spiral upwards, increasing the contact area and path between the reagent and the heating cylinder; the guide ring inside the fixed cover causes the reagent to fall back along the inclined surface, forming a circulating flow. This design allows for more complete reagent movement, effectively accelerating moisture evaporation and improving drying efficiency.

The invention discloses an industrial waste gas liquid recycling device, and relates to the technical field of industrial waste gas recycling, the industrial waste gas liquid recycling device comprises a waste gas inlet structure, a pretreatment structure, a recycling mechanism, a gas-liquid separation structure and a post-treatment structure; the recovery mechanism comprises a recovery tank, a refrigeration assembly, a first supporting seat, a second supporting seat, a condensation pipe, a baffle plate, an air inlet pipe and an exhaust pipe; the recycling tank, the first supporting seat, the second supporting seat, the condensation pipe, the baffle plate, the gas inlet pipe and the gas outlet pipe are matched for use, so that the effect of recycling and reusing the waste gas is improved; a rotating ring, a spiral scraper, a connecting ring, a first rotating gear ring, a first rotating outer gear ring, a first main gear, a first transmission gear ring, a first transmission gear and a first guide block are matched to clean a condensation pipe, a limiting ring, a supporting block and a spiral flow guide fin increase the contact area and turbulence degree of waste gas and the condensation pipe, and the condensation efficiency is improved; the cleaning efficiency of the first cleaning assembly is improved.

The utility model discloses a kind of high-efficiency bar light source, it is related to the technical field of detecting light source.High-efficiency bar light source includes shell, light emitting component, cold air heat dissipation component and diffuser plate;Shell is provided with containing cavity, heat dissipation groove and opening;Light emitting piece is provided with multiple;Heat dissipation pad is abutted with the top end of circuit board and resistance;Heat dissipation pad is abutted with the side wall and top wall of containing cavity, and cover is set in the notch of heat dissipation groove;Multiple resistance is along first horizontal direction and second horizontal direction interval arrangement;Cold air heat dissipation component can input cold air from one vent to heat dissipation groove.The heat generated in the working process of light emitting component can be more evenly conducted to heat dissipation pad, cold air can absorb the heat of shell, the cold air in heat dissipation groove can contact with the top of heat dissipation pad, so that cold air can directly absorb the heat of heat dissipation pad, improve the heat dissipation effect of light emitting component, guarantee the working efficiency of this high-efficiency bar light source.

The utility model relates to a secondary plastic package stacked crystal type optical coupler packaging structure, which comprises a first guide pin, a second guide pin and a third guide pin, the second guide pin is adjacent to the first guide pin; the photoelectric unit is arranged on the first guide pin; the light-transmitting insulating block is arranged on the photoelectric unit; the light-emitting unit is arranged on the light-transmitting insulating block; and the light-reflecting colloid covers the photoelectric unit, the light-transmitting insulating block and the light-emitting unit.

This invention discloses a grille device (100) for an air handling equipment (200), comprising: a plurality of guide vanes (102) connected to the air handling equipment. The plurality of guide vanes (102) are configured to allow airflow to pass through the grille device (100) in a direct current manner along a first direction. The guide vanes (102) include a cross-section defined by the first direction and a second direction perpendicular to the first direction, the cross-section having a maximum chord length (L) along the first direction and a maximum thickness (t) along the second direction, the ratio between the maximum thickness (t) and the maximum chord length (L) being set to reduce noise caused by the airflow while maintaining or increasing the airflow velocity.

The application discloses a light-emitting substrate, a backlight module and a display device, and belongs to the technical field of display. The light-emitting substrate provided by the application comprises a back plate, a driving circuit layer and a plurality of light-emitting units. The light-emitting unit comprises a reflecting layer, a paving layer and a light-emitting chip. Since the light-emitting surface of the light-emitting chip faces the reflecting layer, the light emitted by the light-emitting chip is first transmitted to one side of the back plate, and then is reflected by the reflecting layer arranged on the inner wall of the counterbore on the back plate, so that the path of the light emitted by the light-emitting chip is prolonged. In this way, after the light-emitting substrate is integrated in the backlight module, the distance between the light-emitting substrate and the diffusion plate in the backlight module does not need to be increased, the backlight module can have a better light mixing effect, and the overall thickness of the backlight module is relatively low.

The utility model discloses a kind of fully heated heating boiler, including boiler body and the heating cavity constituted in the boiler body, heating cavity is arranged with heating pipe, further including the water distribution device opened in the boiler body, water distribution device one end is connected with external water source, the end face of the other end is opened with multiple independent downcomer holes communicated with heating cavity, heating cavity is provided with the water distribution board of abutting with water distribution device, the first flow guide plate connected with water distribution board, water distribution board and first flow guide plate jointly define the first water path of being close to heating cavity cavity wall and the second water path of being away from heating cavity cavity wall.The utility model guides water flow to cover wider area, and form more reasonable flow path, to significantly improve heating uniformity and heat exchange efficiency, improve overall performance and energy efficiency of boiler.