32results about How to "Easy to heat" patented technology

The invention discloses a chamber component which comprises a chamber outer cylinder, an induction coil and a graphite sleeve, wherein an outer cylinder cavity serving as a reaction cavity is limited in the chamber outer cylinder; the induction coil is arranged around the chamber outer cylinder; and the graphite sleeve is sleeved in the outer cylinder cavity of the chamber outer cylinder. According to the chamber component disclosed by the embodiment of the invention, a graphite sleeve is arranged between a pallet and an induction coil and is closer to the induction coil than the pallet, thus the graphite sleeve experiences the induction heating of the induction coil before the pallet and can form a hot wall around the pallet, the pallet can be heated and subjected to heat preservation very easily, and the induction heating efficiency is improved. The invention also discloses metal organic compound chemical vapor deposition equipment with the chamber component.

An electric grill with skewer holders has a first grill plate and a second grill plate for roasting various foods. Each of the first and second grill plates has at least one side wall formed with a plurality of concave portions so that a plurality of skewers skewered with foodstuffs can be positioned in a plurality of holes defined by the concave portions and holding ends of the skewers can be exposed out of the electric grill for preventing the holding ends from being heated by the high temperature in the electric grill and stained with oil leaked from the foodstuffs sandwiched between the grill plates so that the skewers can be conveniently held by hand without burning and staining hands with oil.

The invention discloses a medical plastic garbage treatment device, and relates to the technical field of medical plastic garbage treatment equipment. The medical plastic garbage treatment device comprises a bottom plate, wherein the top part of the bottom plate is fixedly connected with a box body; one side of the box body is fixedly connected with a motor box; separating plates are fixedly connected between both sides of the inner wall of the motor box; the top part of each separating plate is fixedly connected with a first motor; a first gear and a first belt wheel are sequentially sheathedat the outer surface of an output shaft of each first motor from left to right; one side of the inner wall of the motor box is rotationally connected with a transmission shaft through a bearing; oneend of the rotary shaft sequentially penetrates through the motor box and the box body and extends into the box body. The medical plastic garbage treatment device has the advantages that the medical plastic garbage treatment speed is improved, and the medical plastic garbage treatment effect is improved; after heating in a heating groove, the amount of harmful bacteria on plastic garbage can be reduced, and the plastics can be well treated and recycled.

The invention discloses a glass fiber plate or profile or pipe and a forming device. The surfaces of glass fiber filaments are sequentially wrapped by surface treating agents and thermoplastic resin. The glass fiber filaments are arranged in the length direction of the plate or profile or pipe and are evenly arranged or arranged in multiple bundles in the above section. The forming device sequentially comprises multiple glass filament unreeling devices, a second heating device, multiple film unreeling devices, a forming die, a cooling sizing device and a traction device. Multiple reels A are arranged on first unreeling discs correspondingly for unreeling. A first heating device comprises a first heater used for heating the glass fiber filaments and a first temperature control device. A steeping device comprises a steeping tank, multiple second guide rollers and a fourth temperature control device. A heating wire or strip-shaped film wraps the glass fiber filaments to form a blank through pulling and extruding. The thermoplastic resin and glass fiber are compounded, forming is easy, the device manufacturing cost is reduced, the operation difficulty is lowered, cost is saved, and the production efficiency is increased by 30% or higher.

The invention relates to the technical field of medical equipment, specifically to a physiotherapy hot compress device for TCM (traditional Chinese medicine) gynecology department. The device includesa heating assembly and a fumigation assembly. The fumigation assembly comprises a fumigation belt, a water storage bag and a liquid storage bag, wherein the water storage bag and the liquid storage bag are respectively located on both sides of the fumigation belt; a medicine placement layer, a fumigation layer and an insulating layer are arranged on the fumigating belt from top to bottom; the topof the fumigation layer is provided with an atomizing hole; an ultrasonic atomization piece is embedded in each atomizing hole; the liquid storage bag is connected with the fumigation layer through afirst flow guide pipe; the water storage bag is connected with the fumigation layer through a second flow guide pipe; the first flow guide pipe and the second flow guide pipe are both provided with one-way valves therein; the liquid storage bag is also connected with a first micro booster pump through a first exhaust pipe; the water storage bag is connected with a second micro booster pump through a second exhaust pipe; and the water storage bag and the liquid storage bag are respectively provided with liquid inlets. By the device of the invention, hot compress of temperature control is realized, treatment while steaming the medicinal herbs is realized, and self-regulation of patients is also achieved.

The invention discloses a metal plate film coating and edge sealing device. The device comprises a pressing roller and support frames; the pressing roller is arranged between the support frames; the pressing roller comprises an upper pressing roller and a lower pressing roller; film-coated metal plates roll between the upper pressing roller and the lower pressing roller; heating frames are arranged on two sides of the metal plates; heating wires are arranged in inner cavities of the heating frames; slide rails are slidingly connected to the bottoms of the heating frames; and the slide rails are supported through support plates. The device is simple in structure, convenient and practical; the metal plates coated with films on two surfaces are fed in equipment through the pressing rollers; the heating frames are slidingly buckled on two side edges of the metal plates; through heating by the heating wires, the coated films on the side edges of the metal plates are heated for softening; the coated films with the softened upper and lower surfaces are bonded to attach on the side edges of the metal plates to cover the side edges of the metal plates; and after cooling, the coated films can be tightly bonded on the side edges of the metal plates, so that the film coating protection can be effectively performed on the side edges of the metal plates.

The invention relates to a fixed heating device using a far infrared heating surface body, comprising a box body (1). The fixed heating device is characterized in that a far infrared heating material (2) is fixedly arranged on the box body (1) and comprises a far infrared heating layer (21); a heat-insulating layer (22) is arranged between one side of the far infrared heating layer (21) and the box body (1); a protective layer (23) is arranged on the other side of the far infrared heating layer (21); a reflecting film is arranged in the heat-insulating layer (22); the far infrared heating layer (21) is connected with a socket (3) arranged on the box body (1); and the socket (3) is connected with a control switch (4). The invention has the advantage of conveniently realizing the heating.

The invention discloses a portable heatable lunch box. The portable heatable lunch box comprising a box body is characterized in that the lunch box further comprises a thermoelectrical refrigeration component, temperature sensors and a control circuit, a cavity is formed in the bottom of the box body, the thermoelectrical refrigeration component is arranged in the cavity, the temperature sensors are arranged in an inner cavity of the box body, and the thermoelectrical refrigeration component and the temperature sensors are connected with the control circuit; the inner cavity of the box body is divided into four parts, and each part is provided with one temperature sensor; the temperature sensors are 2-5cm away from refrigeration plates of the thermoelectrical refrigeration component; the lunch box is further provided with a temperature protection circuit which comprises a cooling fan and a cooling temperature sensor, and the cooling fan and the cooling temperature sensor are connected with the control circuit. The portable heatable lunch box can heat and warm food therein conveniently and is convenient and quick to use.

The invention belongs to the field of dewatering equipment, particularly relates to centrifugal sludge dewatering equipment for sludge repair, and aims to solve the problems that large-particle sludge is attached to a filter screen due to the fact that existing sludge dewatering equipment needs to filter sludge, and meanwhile, sludge blocks are possibly accumulated on a sludge outlet pipe and cannot be discharged after flowing sludge is heated. According to the scheme, the equipment comprises a shell, a hollow rotating shaft is rotationally installed in the shell, a differential mechanism is fixedly installed at one end of the hollow rotating shaft, a spiral transfer plate is fixedly installed on the outer side of the hollow rotating shaft, a water outlet pipe and an inclined pipe are fixedly installed at the bottom of the shell, and an inclined box is fixedly installed at the bottom of the shell. Large-particle sludge attached to the filter screen can be extruded and crushed, the filter screen is prevented from being blocked by the large-particle sludge, meanwhile, sludge blocks accumulated on the sludge outlet pipe are extruded and ascended, and the situation that the sludge blocks are extruded and accumulated mutually and cannot be discharged is prevented.

The invention discloses an acute mastitis massager. A control switch is switched on to enable heating wires to carry out heating, heat generated by the heating wires heats a roller and an annular protrusion, then the roller is put at an acute mastitis position, a first handle and a second handle are held by hand, rolling is carried out according to mammary gland distribution from the armpits to the nipples, and the annular protrusion can comb the acute mastitis position; due to the fact that the annular protrusion is made of an elastic material, damage caused by hard contact with skin can be avoided while massaging is carried out, hot compress is carried out while rolling combing is carried out, the rolling and combing process is the milk ejection process, thus, accumulated milk can be squeezed to the nipples and extruded out, a temperature measuring instrument is observed while massaging and hot compress are carried out, or heating is controlled according to feelings of users.

The invention provides a new improved smoke ventilator. The smoke ventilator provided by the invention comprises a shell member and a heating unit, and the heating unit is embedded in the wall body of the shell member. The shell member can be conveniently heated in order to reduce or avoid deposition of oil stains on the shell member.

The invention discloses a heating device and heating method of a capillary tube chromatographic column. The heating device comprises a column temperature box; a heating piece is arranged at the bottomof the column temperature box, and is connected with a temperature sensor; two ends of the heating piece are connected with a DC power supply; the temperature sensor is connected with a temperature controller; and a capillary tube chromatographic column fixing device is arranged above the heating piece in the column temperature box. By adopting a mode of serially connecting the temperature sensor, the temperature controller and a high-heating ceramic heating piece, two ends of the ceramic heating piece are connected with the corresponding interfaces of the DC power supply and the temperaturecontroller; the current flowing through the ceramic heating piece can be changed by arranging the temperature of the temperature controller, namely, the temperature in the capillary tube in the columntemperature box can be regulated; the temperature required by the capillary tube chromatographic column can be obtained according to an actual demand, thereby reducing the moving phase viscosity flowing through the capillary tube chromatographic column, and reducing the negative pressure of a capillary tube chromatograph.

The invention provides a method for coating a spring member. The method comprises: a coating step, wherein a thermosetting coating material is applied to the surface of a spring member (10), thereby forming, in the spring member (10), a coated portion (20) that has an uncured coating film (200) and two uncoated portions (21a, 21b) that are arranged so as to sandwich the coated portion (20) and do not have the uncured coating film (200); an electrode connection step wherein first electrodes (41a, 42a) and second electrodes (41b, 42b) are electrically connected to the two uncoated portions (21a, 21b), respectively; and a baking step wherein the coating film (200) on the coated portion (20) that is arranged between the two uncoated portions (21a, 21b) is baked by applying a voltage between the first electrodes (41a, 42a) and the second electrodes (41b, 42b), thereby heating the spring member (10) by means of electrical conduction.

The invention provides a comprehensive chemical experiment machine. The comprehensive chemical experiment machine comprises a base, a support, sliding chutes, a top plate, a cylinder, a moving rotating barrel device, a fixed rotating barrel device, a heating box device, a bearing, a rotating sleeve, a lifting rod, a control panel and a vibration damper plate device, wherein the support is welded on the left upper part of the base; the sliding chutes are formed in the left upper part and the right upper part of the support respectively; the left lower part and the right lower part of the top plate are welded on the upper part of the support respectively; and the cylinder is in bolted connection with the middle position of the lower part of the top plate. The comprehensive chemical experiment machine has the beneficial effects that, through the arrangement of the moving rotating barrel device and the fixed rotating barrel device, sufficient mixing of two chemical objects with relatively large liquid density difference is facilitated, and the condition that the two chemical objects are insufficiently mixed due to relatively large liquid density difference is prevented; through the arrangement of the heating box device, the chemical objects are conveniently heated, and the problem that the function of the chemical experiment machine is incomplete is solved.

The invention discloses a multi-component alloy melting and mixing device. According to the invention, each metal melting furnace comprises a shell; the top end of each shell is provided with a feeding inlet; a crushing unit is arranged below each feeding inlet; each crushing unit comprises a first guiding drum and a second guiding drum which are located at a same height and are in opposite arrangement; the left end of each first guiding drum and the right end of each second guiding drum are correspondingly and fixedly connected with and arranged on the inner walls of a shell; a first pull rodand a first compression column are arranged in each first guiding drum; and the left end of each first pull rod extends out of a shell and is connected with a first air cylinder. According to the invention, each crushing unit is arranged below a feeding inlet, and raw materials are successively crushed and heated, so the raw materials are easily heated and molten; a material distribution unit isarranged below each crushing unit, and the raw materials are heated in a plurality of melting chambers, so the raw materials are more easily heated; meanwhile, a sieve is arranged at the lower part ofeach melting chamber, and no unmelted particles enter a mixing drum, so a mixed melt liquid has good quality and is free of impurities; and a furnace body has novel design structure and is easy to operate.

The invention discloses an ordinary pressure water jacket furnace of an acidic gas field wellhead. The ordinary pressure water jacket furnace of the acidic gas field wellhead comprises a horizontal type shell body, a fire cylinder is arranged at the lower portion of a shell body cavity, the fire cylinder is in flanged connection with one end of the shell body, a burner and a chimney are arranged at the outlet position of the fire cylinder, a coiled tube device feeding with natural gases is arranged at the upper portion of the shell body cavity, an expansion tank is arranged at the outer portion of the shell body, the expansion tank is communicated with the shell body cavity, heat-transfer mediums are arranged in the shell body cavity, and the coiled tube device is in flanged connection with the other end of the shell body. The coiled tube device comprises a primary coiled tube and a secondary coiled tube, a throttle valve is arranged between the primary coiled tube and the secondary coiled tube, and the pressure grade and the tube diameter of the primary coiled tube and the secondary coiled tube are not the same. The ordinary pressure water jacket furnace of the acidic gas field wellhead can heat the natural gases effectively. Besides, the ordinary pressure water jacket furnace of the acidic gas field wellhead is convenient to transport, mount and maintain.

The invention discloses a flame heating device suitable for hull carrying weld joints, and a method. The flame heating device suitable for hull carrying weld joints comprises an air pipe, a connectingpipe, a main pipe, a branch pipe, a screw rod, an adjusting rod, a bearing, a sleeve plate, a supporting column, a rolling wheel and a limiting assembly, wherein a first limiting block is fixedly connected to the inner side wall of the main pipe; an adjusting block is arranged in the main pipe; a first limiting groove is formed in the outer side of the adjusting block; the first limiting block isclamped in the first limiting groove; the tail end of the screw rod penetrates into the main pipe; the screw rod is rotatably connected with the inner end wall of the main pipe through the bearing; athreaded through hole is formed in one side of the adjusting block; the screw rod is screwed with the threaded through hole; the threaded rod can be rotated to bee screwed with the threaded through hole; and the adjusting block can move along the interior of the air pipe under the action of the first limiting block and the first limiting groove, and the side, not communicated with the connectingpipe, of the adjusting block can be isolated, so that the number of workable branch pipes is controlled, and adjustment can be conveniently conducted according to the length of a weld joint.

A work vehicle limited in a mounting space is adapted to have an engine, which is provided with an exhaust gas cleaning device, easily arranged therein. An engine device, which is to be mounted on the work vehicle, is provided with the engine mounted on a machine body and covered with a hood, an air cleaner for cleaning air introduced into the engine, and an exhaust gas cleaning device for cleaning exhaust gas from the engine. The exhaust gas cleaning device is arranged on a flywheel housing fitted on one side portion of the engine.

The present invention relates to a box-packed blowing device that is used for changing the temperature of the food, and aims at providing a food temperature-changing device that has low cost and less electric power consumption, and adopts the technical proposal that a blower is arranged inside a closed box; the top surface or the side surface of the box is provided with a sealing door that can be opened; the blower comprises a ventilating pipe and a small electric fan; the small electric fan is arranged inside the ventilating pipe; the blower can also be provided with a resistance wire that can be electrified and a timer, so that a device that can rapidly change the temperature of the food in the way of blowing the food is formed. The device can also heat the temperature by blowing the hot air to the food, and can also cool down the hot team or the soup and the dishes, which are just cooked by blowing the room-temperature wind, so as to drink the hot beverage or to eat the food as soon as possible. The wind that is blown by the box-packed blower is the cycling wind inside the box, so that the wind inside the box is repeatedly heated, thereby saving the energy, and can purify the air that is blown out, and guaranteeing the cleanliness of the food.

The invention relates to the field of baijiu production, and discloses a process for producing aromatic type baijiu. The process includes smashing and screening sorghum; soaking sorghum powder in clear water; adding glutinous rice starch and high-temperature yeast into the sorghum powder; cultivating the sorghum powder, the glutinous rice starch and the high-temperature yeast and then rubbing the sorghum powder to obtain sorghum balls; filling the balls with steel balls by means of rubbing; steaming grain in steamer grates with electromagnetic coils on the walls; discharging the grain out of the steamer grates and then fermenting the grain; distilling the fermented grain and placing fermenting grains into distillation containers with electromagnetic coils on the walls when the grain is distilled, electrifying the electromagnetic coils with alternating currents with the frequencies of 10-20 Hz, continuously filling the distillation containers with carbon dioxide gas when the grain is distilled, distilling the grain to obtain strong liquor of baijiu; storing and blending the strong liquor of the baijiu to obtain the aromatic type baijiu. Compared with the prior art, the process has the advantage of high baijiu yield.

The invention discloses ophthalmologic operation nursing equipment. The equipment is characterized in that two supporting plates are fixedly connected to the right side of the upper end surface of a base, a containing box is fixedly connected to the upper end surfaces of the two supporting plates, a first drawer is movably connected to the interior of the containing box, a cushion block is arranged in the first drawer, a containing groove is formed in the upper end surface of the cushion block, an eye protection device is arranged in the containing groove, an installation bag is an elastic cloth bag body, an opening is formed in the upper end of the installation bag, and a plurality of air holes are formed in the outer wall of the installation bag. Eye compress bags are heated or cooled before use, hot compress or cold compress is selected according to eye conditions of a patient, so that swelling and blood stasis can be eliminated more quickly after an operation, the eye compress bagsand massage blocks are alternately used, eye recovery of the patient is facilitated, and the problems that the nursing effect is poor, the use is inconvenient, eye recovery of the patient is not facilitated and medical tools for nursing are inconvenient to take and store due to the fact that existing ophthalmic operation nursing equipment has a single function and insufficient nursing measures are solved.

The invention provides a hot airflow pipeline. The hot airflow pipeline comprises a heating pipeline, an air pump, a flow guide pipeline, a cyclone separator and a hot airflow outlet pipeline, wherein the heating pipeline is shaped like the letter S, one end of the heating pipeline is connected with the air pump, and the other end of the heating pipeline is connected with a dusty air inlet of the cyclone separator; flow guide openings are formed in the two sides of the end, close to the cyclone separator, of the heating pipeline, and a flow return opening is formed in the end, close to the air pump, of the heating pipeline; one end of the flow guide pipeline is connected with the heating pipeline through the flow guide openings, and the other end of the flow guide pipeline is connected with the heating pipeline through the flow return opening; the hot airflow outlet pipeline is connected with a clean air outlet of the cyclone separator. The hot airflow pipeline is simple in structure and low in manufacturing and purchase cost, achieves backflow of heated dusty air, reduces the heating cost, and is high in heating rate and efficiency.

One aspect of the invention relates to a method for reducing salt content in an aqueous cadaverine salt composition comprising adjusting the pH of the aqueous cadaverine salt composition to provide a first composition comprising an aqueous cadaverine composition and a solid composition, and removing the solid composition from the first composition to provide the aqueous cadaverine composition. Another aspect of the invention relates to a method for the purification of cadaverine from an aqueous cadaverine salt composition using the salt-reducing method described herein; and obtaining cadaverine from the aqueous cadaverine composition.

The invention discloses steel plate heat treatment machining equipment capable of achieving different cooling modes. The steel plate heat treatment machining equipment is provided with a first fixingdevice and a second fixing device for extruding two corresponding sides of a steel plate, so that the steel plate is fixed to the top of a base. A guide valve is opened, fuel in a fuel tank enters a spray head through an air guide pipe and then is further sprayed out of a nozzle to be combusted to heat the steel plate, a first motor rotates to drive a second screw to rotate, movement of second sliding blocks on second sliding rails is achieved, and therefore the height of the nozzle is adjusted. Steel plates with different thicknesses can be heated conveniently, a second motor rotates to drivea first screw rod to rotate, then a first sliding block moves on a first sliding rail, the purpose of heating the different positions of the steel plates is achieved, the steel plates do not need tobe moved, and the heating effect and efficiency are improved.

The invention discloses a stewing and calcining device for traditional Chinese medicinal materials. The stewing and calcining device comprises a sealing cylinder, an overturning cylinder and a gas conveying mechanism. According to the technical scheme of the invention, the traditional Chinese medicinal materials to be stewed and calcined are filled in the overturning cylinder and overturned in a heating process. Due to the fact that the cylinder wall of the overturning cylinder is inwards provided with conical protrusions and sieve holes used for leaking chippings, when the traditional Chinese medicinal materials are overturned in the overturning cylinder, the traditional Chinese medicinal materials collide with the conical protrusions, due to the fact that outer skins of the carbonized traditional Chinese medicinal materials are loose in texture, fall off after being collided and are discharged from the sieve holes, inner cores of the uncarbonized traditional Chinese medicinal materials are exposed, and the uncarbonized traditional Chinese medicinal materials are more easily heated. In a stewing and calcining process, an air pump and air valves at the two ends of an air pipe are opened, and air internal circulation is formed in the sealing cylinder, so that the traditional Chinese medicinal materials at all positions are heated more uniformly. Compared with the prior art in which no special stewing and calcining device exists, the stewing and calcining device for the traditional Chinese medicinal materials is designed, and the heating uniformity of the traditional Chinese medicinal materials in the stewing and calcining process can be effectively improved through the stewing and calcining device for the traditional Chinese medicinal materials.

The invention discloses an office desk with a heating function. The office desk comprises an office desk body, a front desktop board, a heating wire, a desk pad and a pen holder. A rear desktop boardis arranged above the office desk body, the upward side of the rear desktop board is connected with a pen holder cover plate through rotating hinges and magnetic door stoppers, the front desktop board and the rear desktop board are connected through the rotating hinges and a snap joint, a heating wire groove is formed below the front desktop board, the heating wire is placed in the heating wire groove, the desk pad is arranged above the front desktop board, magnets are connected to the interiors at the periphery of the desk pad, the pen holder is disposed at the upward side of the interior ofa placement groove, and the lower end of the pen holder is connected with a compression spring. According to the office desk with the heating function, the rotating hinges are arranged between the rear desktop board and the front desktop board to facilitate the replacement of the heating wire below the front desktop board and provide convenience for use by a user, and the front desktop board is made of a metal material, so that hands of the user are conveniently heated.

The invention discloses a superaudio heating power supply device. The superaudio heating power supply device comprises a power supply body, wherein the power supply body comprises a heating coil; a bottom plate is arranged below the heating coil; the bottom plate is fixedly connected with the power supply body; a lifting plate is arranged above the bottom plate; a lifting mechanism for lifting thelifting plate is arranged in the bottom plate; the upper end of the lifting plate is in sliding connection with a placing plate; and a regulating mechanism for regulating the position of the placingplate is arranged in the lifting plate. The superaudio heating power supply device is relatively convenient for heating a workpiece with a relatively low height.

The invention discloses a military convenient meal box. The military convenient meal box comprises a meal box body, a button and a connecting rod are jacked upwards, and then the button is moved towards the center of a working cavity. The military meal box can be supported to get away from the ground, the meal box is convenient to heat, the time for building a cooking bench is omitted, meal heating operation can be quickly completed, meanwhile, the military convenient meal box can be retracted to be a square block, convenience of the military convenient meal box is achieved, and the military convenient meal box is convenient to carry and use.

The invention discloses a test-tube stand for chemical experiments. The test-tube stand comprises a support shell and is characterized in that a protective cover is fixedly connected to the top of thesupport shell, an upper fixing plate is fixedly to the top of the protective cover, through holes are evenly formed in the fixing plate, the top of the support shell is provided with grooves, the inner bottom of each groove is provided with an arc-shaped heat-conduction plate, a heating plate is fixedly connected to the bottoms of the arc-shaped heat-conduction plates through heat-conduction wires, a resistance heating wire winds the outer side of the heating plate, a circuit board is fixedly mounted at the inner bottom of the support shell, a power switch is mounted on the outer side of thesupport shell and electrically connected with the circuit board, the circuit board is electrically connected with the resistance heating wire, one side of the protective cover is provided with an openslot, and a placing tank is arranged inside the open slot. The test-tube stand has the advantages that the test-tube stand is reasonable in design, test tube heating can be performed conveniently, test tube drying can be facilitated, residual water, which affects experiment data, in test tubes can be prevented, and the test-tube stand is worthy of energetic popularization.

The invention provides a hanging heat treatment device and a treatment method for high temperature resistant bearings, which relate to the technical field of bearing heat treatment and include a first heating tank and a second heating tank, both of which are cylindrical structure, the top and the bottom are open, and the axes of the first heating tank and the second heating tank are coincident, and the second heating tank is located in the first heating tank, and also includes a plurality of first heaters and a plurality of second heaters, The plurality of first heaters and the plurality of second heaters are respectively arranged on the inner wall of the first heating tank and the outer wall of the second heating tank, between the inner wall of the first heating tank and the outer wall of the second heating tank A ring-shaped heating room is formed for heating the materials to be heated in the ring-shaped heating room. The structure design of the invention is reasonable, and the heating effect and efficiency of the materials are very high.