10results about How to "Even heat transfer" patented technology

The utility model belongs to the field of manufacturing of stiffened wallboards of airplane fuselages, and discloses a T-shaped stiffened wallboard hot bending molding forming mold with a controllable temperature field and a controllable deformation field. Comprising an upper template, an upper module, a lower template and a lower module, the upper mold plate and the lower mold plate are rectangular plates, a rectangular block is formed after the upper mold plate and the lower mold plate are closed, the bottom of the upper mold plate is concave inwards to form an arc-shaped curved surface, the top of the lower mold plate is convex outwards to form an arc-shaped curved surface, and the radian of the two arc-shaped curved surfaces is the same as that of a wall plate formed after hot bending molding of the T-shaped stiffened wall plate; the upper die plate, the upper die block, the lower die plate and the lower die block are the same in length and width, the length direction is the left-right direction, and the width direction is the front-back direction. Due to the design of the hot bending molding forming mold structure, uniform heat transfer and high-precision forming manufacturing of the T-shaped stiffened wall plate in the hot bending molding process can be achieved, the stress concentration phenomenon caused by thermal deformation of a product is reduced, and the production efficiency of the product and the yield of the product are improved.

The utility model relates to quenching device technical field, and disclose a kind of quenching device of metal heat treatment, including equipment main body, fixed in the fixed telescopic link of equipment main body upper surface one side and the bracket fixed in telescopic link top, the inside fixed drive device of one side of the bracket, the upper surface of equipment main body another side is fixed with quenching tank.This equipment is rotated by the high friction of sharp cone rubber wheel and quenching tank inner wall, and then rotates by gear engagement to drive metal bar and steel wire brush roller rotation, forms the bidirectional rotation cooperation of metal bar and brush roller, realizes the quick removal of the surface scale of metal bar, this process can effectively reduce the scale coverage area, avoid scale residue to hinder quenching liquid contact, ensure that quenching heat transfer is uniform, improve quenching quality.

The utility model discloses an aluminum alloy holding furnace convenient to replace electric heating rods, and relates to the technical field of aluminum alloy holding furnaces, the aluminum alloy holding furnace comprises an aluminum alloy holding furnace, a support assembly is arranged in the aluminum alloy holding furnace, a protection assembly is arranged at the top of the aluminum alloy holding furnace, and an electric heater is arranged on the surface of the protection assembly; the protection assembly comprises a protection unit and a heat dissipation unit. The protection unit comprises a sealing cover, a protection cover and an access door. The electric heater is installed at the top of the furnace body in a vertical insertion mode, the electric heater is convenient to disassemble, the structure of the furnace body does not need to be integrally damaged, continuous use is facilitated, continuous production is achieved, an oblique insertion type furnace needs more complex disassembly procedures due to limitation of a tilting mechanism, mechanical moving parts (such as a tilting device) are reduced due to vertical layout, and the production cost is reduced. The coupling between the heater and a movement mechanism is reduced, and element vibration or abrasion caused by frequent pouring of molten aluminum is avoided.

The utility model discloses a kind of injection molding mechanisms of no moulding line, it is related to plastic product injection molding technical field, including base, heating tank, conveying outer tube, upper movable die and lower fixed die, the lower fixed die is fixedly connected on base in the base upper end, the lower fixed die below is provided with lifting plate, lifting plate upper end is fixedly connected with left and right two fixed columns, wherein fixed column is inserted in base and lower fixed die, lower fixed die upper end inner wall is provided with lower parting surface, lower fixed die upper end is provided with clamping groove, wherein upper and lower parting surface are slope structure, by mirror surface polishing and nanometer coating treatment, realize submicron level zero gap sealing when moulding, block melt overflow passage, eliminate the moulding line of moulding line produced by the problem of parting surface from root cause of traditional mould, forming piece precision, smoothness is high, and slope design makes upper movable die and lower fixed die can be automatically aligned and attached when moulding, without complex positioning mechanism, simplify mould structure, reduce the risk of positioning error to moulding line.

The utility model relates to the technical field of alcohol recovery equipment, in particular to an alcohol recovery device which comprises a heating tank and a recovery tank arranged on the left side of the heating tank, a liquid inlet valve port and a controller are fixedly installed on the rear side of the heating tank respectively, a condenser is arranged on the top of the heating tank, a return pipe is arranged on the outer side of the condenser, and a liquid outlet valve port is arranged on the return pipe. A heating mechanism is arranged in the heating tank, a liquid outlet valve port and a nitrogen inlet are fixedly formed in the left end of the recycling tank, a pressure sensor is arranged on the rear side of the recycling tank, a lining layer is arranged in the recycling tank, and a PTFE composite layer, an aluminum foil layer and a polyvinyl alcohol composite layer are arranged in the lining layer. According to the alcohol recovery device, the structural design in the heating mechanism is utilized, and under the combination of the electric heating pipe and the heat conduction layer, generated heat can be uniformly conducted to the inner side of the heating tank, so that the heating time is effectively shortened, and the energy consumption of the device is prevented from being increased.

This invention discloses a green and efficient pretreatment method for biomass and its application in the selective preparation of 2,3-dihydrobenzofuran. The pretreatment includes: uniformly mixing biomass raw materials with a ternary eutectic solvent, reacting the mixture in a microwave synthesizer, and then washing, filtering, and drying the reactants to collect the solid residue, thus obtaining the pretreated biomass. The ternary eutectic solvent used in this invention is a mixed solution of zinc chloride, ethylene glycol, and water. It is simple to prepare, uses readily available and harmless raw materials, and is recyclable. Zinc has the dual functions of solvent and catalyst, increasing the total number of hydrogen bonds, promoting the breaking of β-O-4 bonds, and increasing the acidity of the solvent. It also forms metal ion complexes with water ligands, promoting biomass pyrolysis. The pretreatment method of this invention can achieve a lignin removal rate of over 80% at low temperatures, requires a short reaction time, uses readily available and harmless solvents, and exhibits a selectivity for 2,3-dihydrobenzofuran exceeding 40% after pyrolysis, providing technical support for advancing industrialization.

The invention discloses a hot oil circulation heating and hot melting drilling tool for ice layer drilling, which comprises a cable signal system, a melt water recovery system, a hot oil circulation system and a drilling system which are sequentially and coaxially assembled, all the systems are connected through respective outer shells by using bolts and are sealed by adopting sealing rings, a signal input processor and a signal output device are assembled in the cable signal system, and the signal input processor and the signal output device are respectively connected with the melt water recycling system, the hot oil circulating system and the drilling system. The device has the beneficial effects that continuous and uniform heat transfer is realized, local overheating or supercooling of the drill bit is avoided, and the heat utilization efficiency and the ice melting speed are remarkably improved. In addition, efficient energy conversion can be achieved through non-contact induction heating, heat is concentrated on the induction heating rod, heat loss is greatly reduced, and efficient, uniform and controllable hot melt drilling is achieved.

The utility model relates to the technical field of hot-dip galvanizing, in particular to a steel pipe hot-dip galvanizing pot which comprises an equipment main body and a rectangular groove, the rectangular groove is formed in the top of the equipment main body, mounting frames are fixedly connected to the two sides of the equipment main body, and a stirring device is arranged in the equipment main body. According to the stirring device disclosed by the utility model, the output end of the first motor can be utilized to drive the stirring shaft to rotate, the connecting block and the mounting block are driven to rotate at the same time during rotation, and the sliding rod is driven to slide in the sliding groove under the action of centrifugal force, so that the sliding block slides in the mounting block; according to the zinc liquid stirring device, the stirring blades are used for further stirring materials during rotation, the stirring device can enable the zinc liquid to circularly flow in the pot, heat transfer is enhanced, heat generated by a heating source at the bottom of the pot can be quickly and uniformly transferred into the whole zinc liquid, and the situation that the zinc liquid is locally overheated or overcooled is effectively avoided.

The invention relates to a granary circulation fumigation device and method, the granary circulation fumigation device comprises a granary and a gas circulation system, the granary is provided with a gas inlet, the gas inlet is used for introducing fumigation gas, the gas circulation system comprises a bottom gas pipe, a central gas pipe and a plurality of side vertical gas pipes, the bottom gas pipe is provided with a plurality of first gas vents, and the bottom gas pipe is communicated with the gas inlet; the bottom of the side vertical air pipe is communicated with the bottom air pipe, and the side vertical air pipe is provided with a second air port in the vertical direction; a third gas port is formed in the central gas pipe; the variable-speed circulating fan is configured to drive the fumigation gas to flow into the granary from the bottom gas pipe and the side vertical gas pipe and flow out of the granary from the central gas pipe, or to drive the fumigation gas to flow into the granary from the central gas pipe and flow out of the granary from the bottom gas pipe and the side vertical gas pipe; radial flowing is achieved, the flowing distance of fumigation gas in grains can be reduced while the whole granary fumigation can be covered, uneven heat distribution caused by long-distance flowing is avoided, and the fumigation effect is improved.

The utility model provides a steam ablation needle which can integrate a pressure-temperature non-invasive monitoring function. One end of the ablation needle is fixedly connected to the double-layer stainless steel vacuum tube, the other end of the double-layer stainless steel vacuum tube is fixed to the head of the reducer union, tail end threads of the reducer union are fixed to front end threads of the PEEK tube connector, the PEEK tube connector is provided with a pressure-temperature monitoring probe inlet, and the head of the pressure-temperature monitoring probe extends to the head of the ablation needle. A steam transmission stainless steel pipe is connected into the PEEK pipe connector, one end of the steam transmission stainless steel pipe is connected into the PEEK pipe connector, and the other end of the steam transmission stainless steel pipe is connected to a steam generator. According to the invention, the steam pressure and temperature of the ablation center can be measured while continuous and stable steam ablation is realized, and accurate evaluation of steam thermal ablation is realized.