79results about How to "Reduce uneven heating" patented technology

The present invention is directed to a process for forming a plurality of multi-layered filaments from multiple thermoplastic synthetic polymers and an apparatus containing a melt spinning beam which comprises multiple polymer inlet passages each communicating with separate multiple coat hanger distribution manifolds, separate filters connected downstream of each coat hanger distribution manifold, a combining manifold connected downstream of said filters and spinneret orifices connected downstream of said combining manifold for spinning of said multi-layered filaments.

The invention discloses a battery system and an electric vehicle equipped with the same. The battery system comprises one or more automatic temperature-limiting batteries and a battery management unit, wherein each automatic temperature-limiting battery comprises a shell, a roll core, a PTC heating sheet and two heating electrodes; a cavity is limited in the shell; the shell is provided with a positive electrode and a negative electrode; the roll core is arranged in the cavity; the PTC heating sheet is arranged in the cavity and used for heating the roll core; the two heating electrodes are connected with the two ends of the PTC heating sheet respectively to form a part of a heating loop; each PTC heating sheet can be arranged in the roll core or between the roll core and the inner wall surface of the shell, or between adjacent two roll cores; and the battery management unit is used for collecting the temperature of the battery, and controlling the heating loop in charging and discharging of the battery system according to the temperature of the battery. By virtue of the battery system, the original parts and mounting procedures can be simplified, production efficiency can be improved, and cost can be lowered; and in addition, by virtue of the serial-connection type heating circuit, quick temperature rise and uniform temperature distribution in the battery can be ensured, and simple and convenient control on battery heating, and high safety also can be realized.

The invention provides a screed and a paver comprising the same. The screed includes at least one plate section and a screed heating system, wherein the plate section comprises a box body and a box body base plate. The screed heating system consists of an accommodating chamber, a heating device and a circulation device, wherein the accommodating chamber is arranged inside the plate section box body and contacted with the box body base plate, and comprises thermal fluids used for heating the box body base plate; the heating device is used to heat the thermal fluids; the circulation device is connected through the accommodating chamber to drive the thermal fluids to cycle between the circulation device and the accommodating chamber. The screed in the invention speeds up the heat-transfer efficiency of the thermal fluids, thus enabling the box body base plate of the screed to be evenly heated, and also enhances the quality of the road paving by reducing the uneven heating degree and deformation induced by thermal stress of the body box base plate.

The invention relates to a producing method of rice and sweet potato composite convenient straight rice noodles, and belongs to the technical field of food processing.The producing method is characterized in that milled early long-grain nonglutinous rice and sweet potato starch serve as the raw materials, compound bacteria (lactic acid bacteria and yeast) are used for fermenting mixed rice noodles in a limited mode, nutritional factors of rice noodles are increased, and rehydration performance of the product is improved.Part of rice noodles is degraded in a limited mode in a fermentation process, produced ethyl alcohol makes rice noodles produce a porous structure in the twin-screw extrusion process, and the rehydration performance of the convenient straight rice noodles is further enhanced based on the strong absorption effect of alcohol for water and lipid, the permeation capacity and cavitation effect of infrared rays and the internal and external uniform drying effect during microwave pulse drying.The made convenient straight rice noodles are low in breakage rate, good in rehydration performance and excellent in food taste and quality.

The invention relates to the technical field of food processing and discloses a bone-in pork shank steaming device with a uniform heating function. The bone-in pork shank steaming device comprises a base. A first mounting plate, a second mounting plate and a heating plate are fixedly connected to the upper surface of the base, and a steaming box is fixedly connected to the upper surface of the heating plate. A heating groove is formed in the steaming box, and clasp noses are fixedly connected to the top ends of the outer walls of the two sides of the steaming box correspondingly. The upper surface of steaming box is in lap joint with a box cover, and clasps are fixedly connected to the outer walls of the two sides of the box cover. According to the bone-in pork shank steaming device with the uniform heating function, through a steering device, a second rotating rod drives stirring blades to rotate, the stirring effect during pork shank steaming is achieved, the effect that liquid in the steaming box is uniformly heated during heating is achieved, the inner wall of the steaming box is uniformly heated through aluminum wires in the heating groove, the situation of nonuniform heatingin the steaming box is reduced, and the effect of steaming time reducing is achieved.

The invention relates to the technical field of tube heating furnaces for petroleum refining, petrochemical industry and coal chemical industry, particularly to a double-sided radiation spiral pipe heating furnace which comprises a steel framework, an outer ring radiation wall, a spiral pipe, an inner ring radiation wall and a flame combustor, wherein the outer ring radiation wall is attached inside the steel frame, the spiral pipe is positioned on the inner side of the outer ring radiation wall; the inner ring radiation wall is positioned on the inner side of the spiral pipe; and the flame combustor heats for enabling the inner ring radiation wall and the outer ring radiation wall to reach a high temperature to form radiations, and then the inner ring radiation wall and the outer ring radiation wall supply heat to the spiral pipe in a double-sided radiation mode. The double-sided radiation spiral pipe heating furnace can heat furnace pipes evenly, improve average heat strength of radiations of the furnace pipes, save cost, shorten the hydraulic length of the furnace pipe, increase the flow speed of medium inside the pipes, and avoid cock inside the pipes. Meanwhile, abrasions caused by high solid content medium inside the pipes to the inner walls of bending pipes can be avoided, and potential risks caused by the abrasions can be eliminated.

A stirring body of the present invention includes housing rotatably mounted to a center of a bottom surface of a cooking container, and blade that extends from an outer peripheral surface of housing toward an inner peripheral surface of the cooking container and curves convexly toward a downstream side of a rotating direction in a plan view. Blade has front edge positioned on the downstream side in the rotating direction, and rear edge positioned on an upstream side in the rotating direction relative to front edge. A leading end portion of blade curves along the inner peripheral surface of the cooking container in the plan view and slopes upward toward the upstream side in the rotating direction. Front edge is positioned below rear edge near housing and is positioned above rear edge near leading end portion.

The invention discloses a method for efficiently separating and recovering tungsten from alkaline leaching tungsten slag. The method comprises the following steps that after the alkaline leaching tungsten slag, mixed salt and a combustion-supporting medium are uniformly mixed, the mixture is roasted and smelted in a muffle furnace, a roasted material obtained by roasting and smelting is subjectedto crushing, dry grinding, screening and then water leaching, and sodium tungstate in the roasted material is separated and enriched in a water phase so as to be recovered. According to the method, ananhydrous sodium sulfate and sodium carbonate mixed salt system is adopted, a weak oxidation environment is provided in a roasting process, oxidation and recovery of low-valent tungsten are facilitated, the process route of tungsten recovery is shortened, and the productivity is improved; meanwhile, the combustion-supporting medium is added into the materials, the heat conduction performance of amaterial layer is effectively improved, the phenomenon of uneven heating of different parts of the material layer is reduced, and the tungsten recovery rate is improved; and the tungstate in the roasted material is enriched by adopting a water leaching method, the leaching rate is high, the leaching cost is low, environmental pollution is small, and the leaching slag can be subjected to subsequent separation and recovery according to the content of valuable elements such as cobalt and nickel.

The invention provides a screed and a paver comprising the same. The screed includes at least one plate section and a screed heating system, wherein the plate section comprises a box body and a box body base plate. The screed heating system consists of an accommodating chamber, a heating device and a circulation device, wherein the accommodating chamber is arranged inside the plate section box body and contacted with the box body base plate, and comprises thermal fluids used for heating the box body base plate; the heating device is used to heat the thermal fluids; the circulation device is connected through the accommodating chamber to drive the thermal fluids to cycle between the circulation device and the accommodating chamber. The screed in the invention speeds up the heat-transfer efficiency of the thermal fluids, thus enabling the box body base plate of the screed to be evenly heated, and also enhances the quality of the road paving by reducing the uneven heating degree and deformation induced by thermal stress of the body box base plate.

The invention belongs to the field of electron beam smelting, and in particular relates to a method for reducing the splashing of silicon liquid in a polycrystalline silicon electron beam smelting process. The method comprises the steps of material preparation, vacuumizing, pretreatment and smelting, wherein after the pretreatment step, the following steps are performed: (1) adjusting electron beam current, and heating and melting a silicon material; (2) adjusting electron beam spots to spirally move towards the circle center of a crucible along the upper edge of the inner wall of the crucible, causing the electron beam spots to reversely spirally move after the electron beam spots move to the circle center of the crucible, and repeating the spiral movement; (3) after the movement of the electron beam spots is completed, performing electron beam smelting. The method has the remarkable effects that silicon material loss caused by the splashing of the silicon liquid can be reduced, ablation in a vacuum cavity can be reduced, the hidden danger of stopping of an electron gun in case of sudden changes in pressure in the vacuum cavity caused by the splashing of the silicon liquid can be avoided, and a process is simple and easy to operate.

The invention discloses vapor deposition equipment as well as a wafer heating platform deck and a heating method thereof. The vapor deposition equipment comprises a platform deck body, an ejector pin body and a heating device, the heating device is arranged in the ejector pin body; a through hole is formed in the carrying table body, and the ejector pin body penetrates through the through hole; the ejector pin body is used for bearing a wafer and placing the wafer on the upper surface of the carrying table body, the heating device heats the ejector pin body, and the ejector pin body and the carrying table body jointly transfer heat to the wafer. The heating device is additionally arranged in the ejector pin body, so that the ejector pin body is heated by the heating device, the ejector pin body and the carrying table body jointly transfer heat to the wafer, the ejector pin body can reduce heat lost in the through hole or make up the heat lost in the through hole, and then the non-uniform heating degree of the wafer on the carrying table body is reduced; or the phenomenon that the wafer is heated unevenly on the carrying table body is avoided, the forming speed of a film on the upper surface of the wafer can be increased, the thickness of the film is increased, and the film forming efficiency of the surface of the wafer is improved.

The invention provides an ironing plate which comprises a bottom plate, a heating element and a plate frame body, wherein the plate frame body is covered on the bottom plate, and a heating chamber is defined by the plate frame body and the bottom plate; and the heating element is arranged in the heating chamber. The ironing plate also comprises a heat reflection element arranged in the heating chamber. The ironing plate is internally provided with the heat reflection element, and heat emitted to the heating chamber from the heating element can be reflected to the bottom plate so as to improve the heating speed of the bottom plate. Meanwhile, the bottom plate far away from the heating element is heated by heat reflected by the heat reflection element so as to eliminate the phenomenon that the bottom plate is unevenly heated.

The invention discloses a double-U-shaped thermal activation building envelope structure with cross-shaped drill holes. The double-U-shaped thermal activation building envelope structure is characterized by comprising a wall base body, a plurality of double-U-shaped heat exchange pipelines and a temperature monitoring system, wherein the plurality of cross-shaped drill holes are formed inside the wall base body, each heat exchange pipeline is composed of a first U-shaped pipe, a second U-shaped pipe and a heat exchange working medium, the first U-shaped pipes are placed inside vertical drill holes of the cross-shaped drill holes, the second U-shaped pipes are placed inside horizontal drill holes of the cross-shaped drill holes, and the first U-shaped pipes and the second U-shaped pipes are fixed to the four end portions of the cross-shaped drill holes through special fixing pieces and U-shaped pipe fixing rubber strips. According to the thermal activation building envelope structure, the heat accumulation phenomenon widely existing in the interior of a traditional thermal activation building envelope structure can be effectively avoided without intermittent control over a thermal activation building system, and therefore the higher natural energy utilization rate can be achieved, and the corresponding initial investment and operation cost of a source end and a pumping system are effectively reduced.

The invention discloses a heavy truck traction seat micro-hole cooling grid plate and an EPC ceramic sand core method production method. The heavy truck traction seat micro-hole cooling grid plate comprises a body. Vent holes are formed in the body and distributed in the body in an arrayed manner. The vent holes are obliquely formed, the distances between the adjacent vent holes are 15 mm, and thewidths of the vent holes are 2 mm. The length of the body is 500 mm, and the width of the body is 400 mm. The EPC ceramic sand core method production method of the heavy truck traction seat micro-hole cooling grid plate includes the specific steps that I, firstly, a model of a casting is made through foams; II, a ceramic sand core is fixed to the foam model; III, the foam model is brush-coated with a binder; IV, the foam model is put in an evanescent mode sand box, and forming is carried out through negative pressure air extracting; and V, after molten steel is poured into a riser, the foamsare burnt to be removed. The heavy truck traction seat micro-hole cooling grid plate is produced with an EPC ceramic sand core method, the cooling grid plate for a cement kiln can be cast, the coolinggrid plate has a very clear structure contour, the minimum hole diameter is 2 mm, other small and medium structural parts with complex structures can also be cast, and the cooling grid plate is especially suitable for a heavy truck traction seat.