31results about How to "Heating evenly and efficiently" patented technology

The utility model relates to the technical field of ovens, in particular to an energy-saving and environment-friendly oven which comprises a main body mechanism, a heating mechanism, a moving mechanism and a connecting mechanism. The main body mechanism further comprises a box body, the heating mechanism is installed in the box body, the moving mechanism is installed on the heating mechanism, in the using process, the interior of the box body is divided into two parts through the arrangement of a third heating plate, and when a small number of workpieces need to be baked, the third heating plate is arranged on the box body, and the third heating plate is arranged on the box body. A workpiece on the first frame can be baked independently only by sliding the third heating plate into the sliding groove and then starting the first heating plate and the second heating plate close to the first frame, and the third heating plate seals and isolates heat generated by the first heating plate and the second heating plate. And heat is collected among the first heating plate, the second heating plate and the third heating plate, the workpieces are uniformly and efficiently heated, the heat utilization rate is increased, and therefore more energy-saving and environment-friendly effects are achieved.

The invention discloses a main and auxiliary integrated heating assembly and a design method thereof.The main and auxiliary integrated heating assembly comprises a heating power source and a heating base material electrically connected with the heating power source, the heating base material is provided with heating areas and an isolation area, and every two adjacent heating areas are partitioned through the corresponding isolation area; the heating area located on the outermost side is arranged to be an auxiliary heating area, a second positive electrode and a second negative electrode are arranged at the corner of the auxiliary heating area, the heating area located inside is arranged to be a main heating area, and a first positive electrode and a first negative electrode are arranged on the two sides of the main heating area respectively. According to the main-auxiliary integrated heating assembly, the whole heating base material is divided into the auxiliary heating area and the main heating area which are powered by the same power supply, so that the structure of the heating assembly is simplified; meanwhile, through independent power supply adjustment of the auxiliary heating area and the main heating area, the situation that the middle temperature of the displayer is high and the surrounding temperature is low after the heating assembly is started can be effectively relieved.

The lifting mechanism comprises a shell, an oven door is arranged on the front side face of the shell, a handle and a fixing cover are installed on the front side face of the oven door, and the fixing cover is fixedly installed on the top face of the shell. The driving mechanism is arranged on the inner wall surface of the fixed cover; the lifting mechanism is connected with the driving mechanism; and the rotating mechanism is connected with the driving mechanism. According to the oven built-in rack lifting mechanism and the oven, baked food can be lifted and moved in a reciprocating mode, the food is evenly and effectively heated through rotation of the heating pipe, the food baking effect is improved, operation is easy, convenient and flexible, and practicability is high.

The utility model discloses efficient drying spiral equipment which comprises a motor speed reducer, a coupler, a head bearing, a support, a first shell, a first spiral shaft, a second shell, a second spiral shaft, a third shell, a third spiral shaft, a hanging bearing, an air distribution spray pipe, a heater and a fan. The shell I, the shell II and the shell III are sequentially connected end to end through flanges to form a shell main body of the equipment; the first spiral shaft, the second spiral shaft and the third spiral shaft are sequentially and coaxially connected through the hanging bearings to form a spiral conveying assembly. The motor speed reducer is in power connection with the first spiral shaft through the coupler. The air distribution spray pipe is mounted on the shell I; the head bearing and the support are installed at the feeding end of the first shell and used for supporting the first spiral shaft. And the heater and the fan are mounted on the shell II, so that the materials can be efficiently and uniformly heated, and meanwhile, the materials can be conveyed.

The invention relates to the technical field of sublimation crystallizers, in particular to a pillow-shaped plate type decompression sublimation crystallizer which comprises a sublimation tank body, a first crystallization tank body is arranged on the side of the sublimation tank body, a second crystallization tank body is arranged on the side of the first crystallization tank body, and the upper surface of the sublimation tank body is communicated with a first ventilation pipe. The bottom of the side wall of the first crystallization tank body is communicated with a first ventilation pipe, the output end of the first ventilation pipe is communicated with the interior of the first crystallization tank body, the bottom of the side wall of the first crystallization tank body is communicated with a second ventilation pipe, the output end of the second ventilation pipe is communicated with the interior of the second crystallization tank body, a feeding opening is formed in the upper surface of the sublimation tank body, and a sealing cover plate is arranged at the input end of the feeding opening. According to the invention, the sublimation tank body can be efficiently and uniformly heated through the arranged water bath heating assembly, the crystallization efficiency of the crystallizer can be improved through the arranged pressure reduction synergistic assembly, and the crystallization operation with higher purity and higher efficiency can be realized through the arranged crystallization assembly.

The invention relates to the technical field of water-soluble yarn production, and discloses a water-soluble yarn steaming device which comprises a box body and a yarn steaming heating base, a cover plate is connected to the upper portion of the box body through hinges, and a first water-soluble yarn laying frame, a second water-soluble yarn laying frame and a third water-soluble yarn laying frame are transversely distributed in the box body; supports are welded to the two ends of the first water-soluble yarn laying frame and the two ends of the third water-soluble yarn laying frame, cross rods are installed on the outer sides of the supports, shaft seats are rotationally connected between the outer sides of the cross rods and the inner side wall of the box body, and a driving motor is connected to the right sides of the cross rods in a penetrating mode; the yarn steaming heating base is arranged at the bottom of the box body, steam outlets are distributed in the bottom of the box body, heating plates are arranged at the front end and the rear end of the inner side wall of the box body, and electric heating pipes are installed on the inner side walls of the heating plates. According to the water-soluble yarn steaming device, water-soluble yarn can be conveniently laid and placed above the first water-soluble yarn laying frame, the second water-soluble yarn laying frame and the third water-soluble yarn laying frame, rotation adjustment is automatically controlled, and the water-soluble yarn rotates in all directions to be evenly heated and steamed.

The utility model discloses a fish oil mixing filter device with spiral heating pipe. Including heating assembly, stirring subassembly, filter component and feeding assembly. Heating assembly has open heating bucket and spiral heating pipe, stirring subassembly contains mixing cavity, hollow oil pipe, rotating electrical machine, rotating shaft and stirring blade, filter component is constituted by filter bucket, lifting platform and filter baffle, and the first oil inlet pipe and second oil inlet pipe of feeding assembly are connected with crude oil tank and lye pool respectively. The device integrates multiple component functions, heats up quickly and evenly, the spiral heating pipe increases the heat exchange area, solves the traditional heating malady, the mixing and filtering are integrated, the transfer link is saved, the oxidation risk and the viscosity increase problem are reduced, the filter and the maintenance are optimized, the convex design and the liftable platform can separate, replace and clean the filter material, the oil inlet pipe is beneficial to the accurate proportioning and initial mixing. The device is suitable for refining fish oil and other materials, has multiple advantages, effectively integrates the function and has remarkable benefits.

The utility model discloses glacial acetic acid purification equipment and relates to the technical field of glacial acetic acid purification. According to the glacial acetic acid purification equipment base, four supporting legs are fixedly connected to the upper surface of the base, a distillation flask is fixedly connected to the upper ends of the four supporting legs, and an accelerated purification mechanism is arranged on the distillation flask; the accelerated purification mechanism comprises a liquid inlet pipe, a steam pipe, a motor, a vertical shaft, a heating seat, a mixing rod, a first rotating hole, a second rotating hole, a connecting pipe, a heating rod, a reset spring, a mounting block, a pushing plate and a rotating sliding plate, and the steam pipe is fixedly connected to the upper surface of the distillation flask. And the mixing rod rotates to stir a mixture in the distillation flask, so that the mixture is mixed more uniformly, and the mixture in the distillation flask is heated more uniformly and efficiently, thereby ensuring the purification efficiency and quality of glacial acetic acid.

The utility model provides a kind of pyrolysis furnace with material uniform distribution, it is related to pyrolysis furnace technical field, including bottom plate, the top of bottom plate is provided pyrolysis furnace body, the top of pyrolysis furnace body is fixedly connected with multiple feed pipes, the top of bottom plate is fixedly installed with two slide rails, the outer surface wall between two slide rails is movably sleeved with slide plate, the top of slide plate is fixedly connected with two fixed frame, the outer surface wall between two fixed frame is fixedly connected with conveying pipe.In the utility model, through the interaction of each component of the device, the uniform distribution of materials in the pyrolysis furnace is realized, combined with the self-rotating mixing function of the pyrolysis furnace, the material mixing efficiency is significantly improved, the initial material accumulation problem is effectively overcome, and the heating process is uniform and efficient. This unloading mode not only improves the consistency of pyrolysis reaction and product yield, but also greatly reduces the coking risk caused by local overheating.

The present invention relates to a high-frequency induction brazing welding device, including a bracket fixture, an induction coil and a contact lifting device. The bracket fixture clamps the bracket and exposes the welding position of the bracket to the outside of the bracket fixture. The contact lifting device is located above the bracket welding position and lifts the contact located at the bracket welding position. The induction coil is located below the bracket welding position. The contact lifting device first lifts the contact to a certain height. After the induction coil heats the brazing material located at the bracket welding position to a completely molten state, the contact lifting device lowers the contact to the welding height and discharges the bubbles. By adopting the above scheme, the present invention provides a high-frequency induction brazing welding device with improved welding quality, which mainly solves the defect problem that the existing contact welding surface is concave, resulting in poor welding area of ​​the contact assembly.

The utility model discloses a compressed air energy storage chamber temperature control system, which is applied to a chamber and comprises a first water source group, a second water source group and a temperature control system, the second water source group is used for providing heating water; the water pump assembly comprises a first cylinder body and a second cylinder body which are independent from each other, pistons are arranged in the first cylinder body and the second cylinder body respectively, and the two pistons are driven by the same power source to move in opposite directions; one end of the first water supply pipeline communicates with the first water source set and the second water source set, and the other end of the first water supply pipeline communicates with a left cavity of the first cylinder body and a left cavity of the second cylinder body. And cooling water of the first water source group / heating water of the second water source group is conveyed to the left chamber of the first cylinder body and / or the left chamber of the second cylinder body.

This utility model discloses a heating tank for producing bio-jet fuel feedstock from waste cooking oil, relating to the field of waste cooking oil processing technology. The tank includes a tank body with symmetrically fixed support frames at the bottom and symmetrically fixed oil filling hoppers at the top. A motor is fixedly connected to the outside of the tank body, and an oil drain pipe is located at the bottom. An electromagnetic valve for control is installed inside the oil drain pipe. A stirring mechanism is located inside the tank body, comprising a stirring component and a temperature control component, which work together. This heating tank for producing bio-jet fuel feedstock from waste cooking oil enables efficient and uniform heating, intelligent temperature control, and dynamic turbulent stirring to improve oil reaction efficiency, reduce energy consumption, and meet the process requirements of bio-jet fuel feedstock production, ensuring uniform heating.

The utility model relates to a dyeing steam box which comprises a box body, a pipe is arranged at the bottom of the inner side of the box body, one end of the pipe is sealed, the other end of the pipe penetrates through the box body to be located outside, air outlet holes are evenly formed in the portion, located in the box body, of the pipe, and hinge seats are arranged at the two ends of the inner wall of one side of the box body at intervals from bottom to top. The hinge seats are staggered in the vertical direction, rod bodies capable of rotating up and down are hinged to the hinge seats, placing seats are arranged at the positions, corresponding to the rod bodies, of the inner wall of the other side of the box body, the ends, away from the hinge seats, of the rod bodies are placed on the placing seats, and gridding cloth is arranged in the box body at intervals from bottom to top. The two ends of the gridding cloth are fixedly connected with the corresponding rod bodies respectively, a cover is arranged on the upper side of the box body, and cloth can be heated more efficiently and evenly.

The utility model belongs to the technical field of special equipment for ceramic capacitor manufacturing, specifically relates to a heating system for green porcelain belt preparation. The heating system for green porcelain belt preparation, including heating chamber, silicon rubber heating plate and hot -blast heating mechanism, load film carries ceramic slurry and can enter from the feed port of one end of heating chamber, leave from the discharge port of the other end, silicon rubber heating plate is fixedly arranged in the heating chamber, and the load film is located above the silicon rubber heating plate when running, the hot -blast heating mechanism is used for introducing the outside air, forms hot -blast after heating and makes hot -blast blow into the heating chamber in the way of parallel to the load film running direction and countercurrent to the load film running direction, and the ceramic slurry on the load film is dried. The utility model has the advantages of low cost, small temperature difference in the width direction of film and high safety.

The utility model discloses copper-clad plate production equipment, which is used for heating a copper-clad plate and comprises a box body module, a first heating module and a second heating module, the first heating module and the second heating module are both installed on the box body module, and the box body module comprises a shell, a top installation unit and a bottom installation unit. The top mounting unit and the bottom mounting unit are both arranged in the shell; the top mounting unit comprises a top plate, a first sliding rail, a second sliding rail, a plurality of first sliding rail mounting blocks and a plurality of second sliding rail mounting blocks. According to the copper-clad plate production equipment disclosed by the utility model, the box body module, the first heating module and the second heating module are linked, so that a copper-clad plate is automatically, uniformly and efficiently heated, the stress in the plate is eliminated, and the copper-clad plate production equipment has the advantages of stable structure, high efficiency, high practicability and the like.

The utility model relates to the technical field of high-temperature calcination of powder, and discloses an indirect heating type high-temperature atmosphere shaft furnace, which comprises a feeding device, a heating device and a heating device, the pushing device is connected with the feeding device and used for pushing the materials to the material storage pipe body; the material storage pipe body is a vertical cylindrical container and is internally used for accommodating and conveying materials; the heating rods are distributed in the axial direction of the material storage pipe body and used for providing a high-temperature heat source. And the heating rods are axially distributed along the material storage pipe body, so that the heating efficiency is improved, the materials are uniformly and efficiently heated, and the energy utilization efficiency is remarkably improved. Due to the arrangement of heat preservation cotton and a heat insulation layer, heat loss is effectively reduced, the temperature in the furnace is more stable, and the calcination efficiency is further improved. Meanwhile, different temperature intervals can be formed in the furnace due to the design of the thermal insulation layer, so that the requirements of different materials on temperature are met, and the applicability of the equipment is enhanced.

The present invention relates to the technical field of solid material storage containers, and in particular to a modular container for storing solid materials, comprising an external frame and a tank body arranged inside the external frame, wherein a plurality of hydrogen storage bags for storing hydrogen are arranged inside the tank body, and the plurality of hydrogen storage bags are arranged in sequence along the axial direction of the tank body; the hydrogen storage bag comprises a storage cylinder, a hydrogen storage material block and two end caps, wherein the two end caps are respectively arranged at the two ends of the storage cylinder, and the storage cylinder cooperates with the two end caps to form a sealed space for accommodating the hydrogen storage material block; the hydrogen storage bag also comprises a heat conducting plate embedded inside the hydrogen storage material block, the heat conducting plate is used to transport hydrogen, and heat the hydrogen and the hydrogen storage material block; the heat conducting plate extends from the middle of the hydrogen storage material block along a rotating path to the edge of the hydrogen storage material block. The present invention realizes modular storage of hydrogen inside the container, and improves the heating efficiency and heating uniformity of the hydrogen storage material block.

The utility model provides an ultrasonic fryer, which belongs to the technical field of frying equipment and comprises a cylinder body arranged in the fryer, an ultrasonic vibrator is arranged on the outer side wall of the cylinder body, and the vibration output end of the ultrasonic vibrator penetrates through the side wall of the cylinder body and extends into an inner cavity of the cylinder body. The highest point of the vibration output end does not exceed the lowest oil level line in the cylinder body, and the ultrasonic vibrator can transmit high-frequency mechanical vibration to edible oil in the cylinder body after being started; when edible oil is heated, the edible oil is spread into oil molecules through high-frequency mechanical oscillation, so that the oil in the oil cylinder is quickly vibrated, the edible oil circularly moves in the cylinder body, hot oil and cold oil are fully mixed, the temperature distribution of the edible oil is more uniform, and the heating efficiency is improved.

A ring-shaped member is induction-heated by supplying a current to an induction coil. An induction heating step includes induction-heating the ring-shaped member using an induction coil (17) disposed at a radially inward position of the ring-shaped member in a state in which no substantial coil is disposed at a radially outward position of the ring-shaped member, or induction-heating the ring-shaped member using an induction coil (18) disposed at the radially outward position of the ring-shaped member in a state in which no substantial coil is disposed at the radially inward position of the ring-shaped member. Effective lengths of the induction coils (17, 18) are set to be larger than an axial length of the ring-shaped member.

The invention discloses a polluted soil chemical treatment device in the technical field of polluted soil treatment, which comprises a transport vehicle and a hydraulic drilling machine, the hydraulic drilling machine is fixedly connected with a tail compartment of the transport vehicle, and the hydraulic drilling machine comprises an air treatment assembly, an air injection pipeline and a gas absorption assembly; the outer wall of the air injection pipeline is detachably and fixedly connected with the hydraulic drilling machine fixing chuck, the air treatment assembly is detachably communicated with the top end of the air injection pipeline, and the bottom end of the air injection pipeline is fixedly connected with a drill bit injection assembly. The device is flexible and effective, hot air is injected into the soil by combining the soil gas extraction technology and the thermal desorption remediation technology, the desorption treatment efficiency of the high-viscosity or dry soil is improved, meanwhile, the transport vehicle, the hydraulic drilling machine and the treatment device are integrated, and the flexibility and treatment efficiency of soil treatment work in the field are improved.

The utility model relates to the technical field of asphalt concrete heaters, in particular to a heating device for asphalt concrete processing, which comprises a heating main body device, a motor arranged on the upper side of the heating main body device, an output shaft rotationally connected in the motor, and a matched rotator fixedly connected to the circumferential surface of the output shaft. According to the device, the heating efficiency is improved by additionally arranging the stirring rods, so that asphalt and aggregate can be heated more uniformly, and when the asphalt and the aggregate are stirred in the heating device, the contact area of the asphalt and the aggregate can be increased, so that the asphalt and the aggregate can be heated more uniformly, and the asphalt and the aggregate can be heated more uniformly. Therefore, heat transfer and distribution are accelerated, heating is more uniform and efficient, and meanwhile, the device further has a barrel self-cleaning function, so that the working efficiency of the device is improved.

According to the heating disc, in the vacuum heating process, heat is directly transferred to the material disc through the guide pipe. The heat is emitted from the guide pipe, penetrates through the connecting disc and finally is uniformly transferred to the material disc arranged on the mounting surface. And it is guaranteed that the material disc can be evenly and efficiently heated, and the heating efficiency and the heating quality are optimized. And heat is directly transferred through the guide pipe, so that loss of heat energy in the transfer process is greatly reduced, and heating is more efficient. It is ensured that heat can be evenly distributed to each part of the material disc, the problem that in a traditional heating mode, heating of the material disc is not even is solved, and the yield of materials is increased. The material disc, the functional disc, the connecting disc and the guide pipe are welded together, and the disc body sealing effect is achieved. And the heating disc is heated in the vacuum cavity.

The utility model belongs to the technical field of composite board processing, and particularly relates to a die-casting pot bottom composite board induction heating device which comprises a rack, a bearing seat is fixedly installed at the bottom of the rack, and a support is fixedly connected to the back of the rack. A placing mechanism is slidably mounted at the top of the bearing seat; a heating mechanism is arranged at the top of the bracket; the heating mechanism further comprises a heating assembly, a moving assembly and a sliding rail. Wherein the heating assembly comprises a fixed plate and a sliding seat, a frequency converter is fixedly mounted on one side of the fixed plate, an induction heating coil is fixedly mounted on one side of the frequency converter, and the sliding seat is slidably mounted at the top of the sliding rail; the moving assembly comprises a fixing base, and a second motor is fixedly installed at the bottom of the fixing base and used for driving the transmission wheel belt set to drive the moving base to move. Under the cooperation of the heating mechanism and the placing mechanism, the device can be used for uniformly and efficiently heating the raw material plate of the composite plate, and is suitable for heating the composite plates with different sizes.

The application discloses a gradient temperature and pressure reaction kettle for preparing a furfural composite catalyst and a control method thereof, and relates to the technical field of reaction kettles. The gradient temperature and pressure reaction kettle for preparing the furfural composite catalyst comprises a reaction kettle body provided with a feeding pipe and a discharging pipe, and further comprises a vertical pipe rotatably installed in the reaction kettle body, wherein an outer wall of the vertical pipe is provided with a horizontal frame, a plurality of longitudinally arranged stirring rods are installed on the horizontal frame, and an inner heat exchange assembly is arranged in the vertical pipe; a plurality of circumferentially distributed protruding portions are arranged at equal intervals on an inner wall of the reaction kettle body, wherein the two sides of the protruding portions and the inner wall of the reaction kettle body are connected through inclined surfaces; through the arrangement of the cavity and the heat exchange cavity, the raw materials in and outside the reaction kettle body can be heated at the same time, so that the raw materials are heated more uniformly, and the final quality and efficiency of the catalyst are also significantly improved.

The utility model relates to the field of galvanization additive heating, and discloses a galvanization additive raw material preheater which comprises a heating tank, a uniform mixing assembly is arranged at the bottom of the heating tank, a feeding pipe is fixedly connected to the top of the heating tank, and a heat conduction plate is fixedly connected to the inner wall of the heating tank. An electric heating rod is fixedly connected to the inner wall of the heating tank, a mounting ring is fixedly connected to the top of the electric heating rod, an annular pipeline is arranged outside the feeding pipe, a valve is fixedly connected to the inner wall of the annular pipeline through a pipeline, an air injection pipe is fixedly connected to the output end of the valve, and an annular air bag is arranged at the top of the annular pipeline; and the inner surface of the annular air bag is fixedly connected with an occlusion ring, and an embedding groove is formed in the outer wall of the feeding pipe. According to the device, oxidation and volatilization of raw materials are reduced through the nitrogen injection system, the annular air bag and the occlusion ring seal the feeding pipe to prevent flying dust and explosion, and the heating efficiency, the safety and the product quality are improved.

The invention discloses a production method and production equipment of an SPF high-performance spraying matrix, including a defibrillation component and a fiber steaming component, the fiber steaming component including a sealing top plate, the lower surface of the sealing top plate is sealed against a first rotating plate, a plurality of second rotating plates are arranged directly below the first rotating plate and are equidistantly distributed in parallel, a sealing cylinder is sealed against the first rotating plate and the second rotating plate at the top and between adjacent second rotating plates, the lower surface of the second rotating plate at the bottom is sealed against a sealing bottom plate, fan-shaped through holes are provided on the sealing top plate, the lower surface of the first rotating plate and the lower surfaces of other second rotating plates except the second rotating plate at the bottom are fixedly connected with a first scraper, and a plurality of coaxially arranged steam cylinders are installed on the upper surface of each second rotating plate to prevent wood fiber from adhering to the side wall of the steam cylinder, thereby increasing the output of wood fiber and reducing the amount of waste.

The utility model relates to the technical field of compound fertilizer production, concretely is a kind of anti oiling heating device, including rack, electromagnetic eddy current heating mechanism, lifting mechanism and control unit, electromagnetic eddy current heating mechanism is movably arranged in the top of rack by lifting mechanism, and electromagnetic eddy current heating mechanism includes the cylindrical heating cover of lower end opening and the electromagnetic eddy current coil around the inner wall of heating cover;Lifting mechanism is used to drive electromagnetic eddy current heating mechanism to make lifting movement, so that heating cover can be buckled and cover or lift off the oil drum placed on the rack workbench surface;Control unit is electrically connected with electromagnetic eddy current heating mechanism and lifting mechanism, for controlling the lifting action of lifting mechanism and the start-stop and power of electromagnetic eddy current heating mechanism.The scheme provides a kind of accurate, uniform heating device.

The utility model relates to the technical field of welding equipment, in particular to assembly line welding equipment. The assembly line welding equipment comprises an equipment body, the equipment body comprises an induction assembly used for allowing a welding workpiece to penetrate through and used for heating and welding the welding portion of the welding workpiece, a fixing assembly used for fixing the welding workpiece and a conveying assembly used for conveying the fixing assembly, and the conveying assembly drives the fixing assembly to move. And the welding workpiece gets close to and away from the sensing assembly. The induction assembly, the fixing assembly and the conveying assembly are arranged, automatic welding treatment is achieved, the induction assembly generates a high-frequency electromagnetic field to enable a welding workpiece to form eddy current heating so that welding can be completed, and in addition, the fixing assembly is used for stabilizing the welding workpiece and guaranteeing the stability of the welding process. And the conveying assembly enables the welding workpiece to automatically penetrate through the induction assembly to be welded and automatically move away after welding is completed, the risk of manual welding is reduced, and the welding stability and efficiency are ensured.

The utility model relates to the technical field of road construction equipment, in particular to road construction asphalt heating and melting equipment which comprises a bottom plate, the upper end face of the bottom plate is fixedly connected with a heating cylinder, the outer wall of the heating cylinder is fixedly connected with a plurality of heating cavities which are evenly distributed up and down, and a plurality of electric heating blocks are arranged in the heating cavities. A plurality of heating cavities are vertically distributed to form a plurality of heating areas, independent temperature control of different positions in the heating cylinder is achieved in cooperation with temperature sensors distributed in the plurality of heating areas, so that asphalt heating is more uniform and efficient, the asphalt is externally heated conveniently through an electric heating block, and meanwhile, a heat conduction cavity is formed in the heating cylinder; and the heat conduction oil is arranged in the heat conduction cavity and is a heat conduction carrier, so that the inner barrel is conveniently and uniformly heated, the asphalt is heated from the inside, the heating efficiency can be effectively improved, the asphalt is uniformly heated, and the influence of local heating on the extensibility and cohesiveness of the asphalt is avoided.