8results about How to "Avoid local high temperature" patented technology

The invention relates to the technical field of magnesium oxide calcination, and particularly discloses a suspension calcination system and method capable of adjusting the activity of light calcined magnesium oxide. Comprising a multi-stage preheater, a suspension calcining furnace connected with the multi-stage preheater, a high-temperature section cyclone cooler which is respectively connected with the multi-stage preheater and the suspension calcining furnace and is used for conveying flue gas subjected to heat exchange to the suspension calcining furnace, and a low-temperature section cyclone cooler connected with the high-temperature section cyclone cooler, a plurality of layers of combustors used for realizing gradient distribution and partitioned combustion of the temperature in the suspension calcining furnace are arranged in the suspension calcining furnace; according to the invention, the distribution valve, the multi-layer combustor and the high-temperature section cyclone cooler are connected with the suspension calcining furnace, the distribution valve is adjusted for distribution circulation, the multi-layer combustor realizes partitioned combustion, and residual air after heat exchange of the high-temperature section cyclone cooler is used for cooperation, so that the activity index of light-burned MgO is adjusted and controlled in stable and continuous production, and the production efficiency is improved. The product quality requirement is met.

This invention discloses a staggered combustion municipal solid waste incinerator, comprising an incinerator body. Within the incinerator body, a stockpiling zone and a drying section are sequentially arranged along the waste transport direction. A feed inlet is located above the stockpiling zone. Several pushers are positioned on the side of the stockpiling zone away from the drying section grate. Each pusher is slidably arranged in the stockpiling zone along the waste transport direction and is horizontally arranged sequentially along a direction perpendicular to the waste transport direction. Each pusher operates sequentially at the same time interval along its arrangement direction. The drying section is equipped with a reciprocating grate for receiving the material discharged from the pushers. The reciprocating grate's cycle is less than the time interval between the actions of two adjacent pushers. The waste material is sequentially ignited within the incinerator body, thus staggering the peak emissions of pollutants in space and time, resulting in uniform pollutant release and significantly improved flue gas purification system efficiency.

The supercharger integrating the water pumping function and improving the sudden stop reliability comprises a turbine assembly, a middle shell, a gas compressor assembly and a middle shaft, the two ends of the middle shell are connected with the turbine assembly and the gas compressor assembly respectively, the middle shaft penetrates through the middle shell, the turbine assembly and the gas compressor assembly are installed at the two ends of the middle shaft respectively, and the middle shell is connected with the gas compressor assembly. The turbine assembly and the gas compressor assembly are linked; the supercharger is further provided with a cooling liquid cavity and a water pumping impeller, the cooling liquid cavity comprises a water inlet cavity, a water return cavity and a middle cavity, and the middle cavity is communicated with the water inlet cavity and the water return cavity; the water pumping impeller is installed in the middle of the middle shaft and located in the middle cavity. The cooling device has the advantages that the structure is compact, the supercharger can be continuously cooled during inertial motion of the supercharger rotor, the working stability of the supercharger is improved, and the service life of the supercharger is prolonged.

This invention belongs to the field of polymer sealing materials technology, specifically relating to a modified PTFE sealing material, its preparation method, and its application. The modified PTFE sealing material provided by this invention comprises the following components: polytetrafluoroethylene resin, bronze powder, nano-carbon materials, polyimide micropowder, potassium titanate whiskers, graphite, coupling agent, and lubricant. The modified PTFE sealing material provided by this invention exhibits high wear resistance, extremely low wear rate, excellent creep resistance, good self-lubrication, and thermal conductivity, enabling it to maintain excellent performance under various operating conditions (high-speed, high-temperature, and extreme-pressure conditions), thus extending the service life of the sealing components.

The invention discloses a cooling assembly of a motor, the motor and a vehicle, the cooling assembly comprises an inflow piece and an outflow piece which are arranged in a sealing cavity in the axial direction, the inflow piece and the outflow piece define a cooling space, and the inflow piece and the outflow piece are each provided with a cooling fluid flowing opening. The winding unit comprises a cooling space and an outflow part, the outflow part is arranged in the cooling space so that cooling fluid can be injected into and led out of the cooling space, at least part of the winding unit penetrates through the inflow part to stretch into the cooling space and makes direct contact with the cooling fluid in the cooling space, and the extension length of the outflow part in the axial direction is larger than the extension length of the inflow part in the axial direction. Cooling fluid can form a cooling fluid flow field wrapping the periphery of the winding unit through directional flow distribution of the flow inlet piece, the cooling fluid is led out through the flow outlet piece after heat exchange is completed, the heat dissipation effect is guaranteed, the axial extension length of the flow inlet piece is smaller than that of the flow outlet piece, the heat exchange area can be increased, the flow speed of the cooling fluid in the iron core gap can be increased, and the heat dissipation effect is enhanced.

The utility model relates to the technical field of LED lighting, in particular to an LED lamp bead which comprises a substrate, the substrate is of a multi-layer composite structure, the substrate is sequentially provided with a heat conduction layer, an insulation layer and a heat dissipation layer from top to bottom, an LED chip is arranged on the upper surface of the heat conduction layer, a transparent packaging layer covers the LED chip and the heat conduction layer, a plurality of heat dissipation protruding points are arranged on the outer surface of the packaging layer, and the heat dissipation protruding points are arranged on the outer surface of the packaging layer. The heat dissipation protruding points are distributed in an array mode and used for increasing the surface area of the packaging layer and promoting heat to be dissipated to the surrounding environment, heat dissipation fins are attached to the surface of the heat dissipation layer, a plurality of micro grooves are formed in the surfaces of the heat dissipation fins and evenly distributed in the length direction of the heat dissipation fins, and a plurality of heat dissipation channels are further formed in the heat dissipation layer. And the plurality of heat dissipation channels are connected with the heat dissipation fins.

The invention relates to the technical field of gas mixing equipment, in particular to a gas uniform distribution mixer which is connected to a gas inlet pipe opening of an esterification tower and comprises a barrel, a supporting frame, a balance plate, a rectifier and a distributor, and the supporting frame is located in the barrel and comprises a front end connecting part, a shaft pipe and a rear end connecting part; the shaft tube is rotationally connected with the front end connecting part and the rear end connecting part, the shaft tube is communicated with the rear end connecting part, the rear end connecting part is communicated with an oxygen inlet outside the cylinder body, a balance plate and a plurality of distributors are connected to the shaft tube, air holes are uniformly distributed in the balance plate, the distributors are arrayed in the circumferential direction of the shaft tube, and the air holes are communicated with the air holes. Air outlet holes are formed in each distributor at intervals, the air outlet holes incline towards the rear end connecting part, and a rectifier connected to the inner wall of the cylinder body is arranged between the balance plate and the distributors. According to the invention, oxygen and NO gas are fully mixed and dispersed, local high temperature is avoided, and meanwhile, oxygen can be quickly consumed and is prevented from being doped into subsequent processes.

The application provides an LCD black-and-white screen projection lighting structure, which is mainly composed of a projection assembly, a light funnel and a light source rotating disc. The light source rotating disc is designed to rotate around the central axis, so as to reduce the local temperature rise of the light source rotating disc. A plurality of color source areas are arranged in the circumferential direction on the light source rotating disc. The light outlet of the light funnel is opposite to the projection assembly, and the light inlet is opposite to the color source area on the light source rotating disc, so that the light loss in the transmission process is minimized. The light emitted by the color source area is efficiently collected by the light funnel and transmitted to the projection assembly, so that the light utilization rate is improved. The rotation of the light source rotating disc enables the color source areas to work alternately, so that the local high temperature caused by long-time light irradiation in a single area is avoided, and good heat dissipation effect is achieved. Meanwhile, the color source areas are independently lighted, only the working color source area generates heat, the overall heat generation is reduced, and the temperature is lowered.