48results about How to "Good preheating effect" patented technology

The belt conveyor comprises a belt body and a machine body used for installing and driving the belt body to operate, the middle section of the belt body penetrates through a baking machine, the upper end face of the belt body is used for placing a glass panel, and a supporting conveying mechanism is installed on the belt body. The supporting and conveying mechanism is used for carrying the panel to synchronously move along with the belt body, the supporting and conveying mechanism is further used for separating the belt body from the panel, meanwhile, the supporting and conveying mechanism further comprises a negative pressure mechanism, and the negative pressure mechanism is used for keeping the stability of the panel in the horizontal direction. According to the belt conveyor for intelligent baking processing of the screen glass, the supporting and conveying mechanism is designed on the basis of an existing belt conveyor, panels of multiple specifications can be flexibly conveyed, meanwhile, stable limiting and synchronous cleaning of the non-baking faces of the panels can be achieved through the gravity of the panels, and the practicability is high. And the function is specially designed for the baking process, the effect is better, and more energy conservation and environmental protection are achieved.

The invention discloses a high-temperature waste gas treatment assembly for a high-ash-content rotary kiln, and belongs to the technical field of rotary kiln waste gas pollution treatment. The high-temperature waste gas treatment assembly comprises a feeding pipe mounted on the rotary kiln and a treatment assembly matched with the feeding pipe and communicated with the tail end of the rotary kiln; high-temperature waste gas exhausted by the rotary kiln is primarily treated, most dust particles in the waste gas are removed, the waste gas carrying small particles is guided into a filtering structure, and in secondary filtering treatment, two sets of filtering cavities are selectively opened and closed through a rotatable plugging piece, so that the dust particles in the waste gas are removed. Waste gas is introduced into the filtering cavities in the open state through the gas supply part to be filtered through the filtering filler and then dispersed through the communicated gas holes to be introduced into the feeding pipe to preheat materials, and after the filtering filler reaches the service life, the plugging part is rotated, so that the working state of the filtering filler in the two filtering cavities can be replaced. And the used filter filler can be treated without shutdown.

The invention relates to the technical field of cable processing, in particular to a double-station cable straightening and winding production line system and a process method of the system.The double-station cable straightening and winding production line system comprises a cable production line system body, the cable production line system body comprises a storage rack, a rust removal device is arranged behind the storage rack, and the rust removal device is provided with a heating device in a matched mode; the heating device is connected with an extruder, a traction storage device is arranged behind the extruder, a guide frame is arranged between the traction storage device and the extruder, and a winding device is arranged behind the traction storage device; according to the system, by integrating a plurality of functional modules such as the storage rack, the rust removal device, the heating device, the extruder, the traction storage device and the winding device, full automation and intelligence of cable processing are achieved. According to the system, the production efficiency is improved, the labor intensity is reduced, and the consistency and the stability of the product quality are ensured.

The utility model discloses three-dimensional grain conveying equipment which comprises a feeding frame, two placing supports are fixedly connected to the bottom of the feeding frame, and a preheating mechanism is arranged on the feeding frame. The preheating mechanism comprises a heat preservation sleeve fixedly arranged on the outer portion of the feeding frame in a sleeving mode, a plurality of frame-shaped partition plates are fixedly connected into the heat preservation sleeve, the inner walls of the frame-shaped partition plates are all connected with the outer wall of the feeding frame, and circulation openings are formed in the frame-shaped partition plates. According to the three-dimensional grain conveying equipment, the arranged preheating mechanism can preheat grains in the feeding frame when the grains are conveyed by the feeding frame, the grains can be evenly heated in the rolling process of the feeding auger, the preheating effect is better, and therefore subsequent drying of the grains can be facilitated, and the overall processing efficiency is improved.

The present invention provides a preheating structure, which belongs to the field of packaging technology, and includes: a first preheating block, which is fixed to a frame; a second preheating block, which is movably connected to the frame and has a preheating state parallel to the first preheating block, in which a preheating gap is formed between the two opposite heating surfaces of the second preheating block and the first preheating block; the second preheating block also has a maintenance state away from the first preheating block, in which a maintenance space is formed between the second preheating block and the first preheating block for facilitating cleaning of the heating surface; a heating element is provided on the first preheating block and / or the second preheating block. The preheating structure of the present invention adjusts the space distance formed between the second preheating block and the first preheating block by rotating the second preheating block, so that there is enough maintenance space to clean the heating surface, avoiding difficulty in cleaning due to insufficient space; and in the low-speed preheating state, the preheating gap can be opened at a certain angle to avoid melting and sticking of the material.

The utility model discloses an on-line preheating machine for PP (polypropylene) production. The on-line preheating machine comprises a machine table, an automatic discharging mechanism, a rotating mechanism and a preheating mechanism, support legs are respectively arranged at four corners of the lower end of the machine table; the automatic discharging mechanism comprises a rotating column and a supporting plate, the supporting plate is located in a rectangular groove in the upper end of the machine table, the front side face and the rear side face of the left end of the supporting plate are rotationally connected with the adjacent inner walls of the rectangular groove through the rotating column correspondingly, supporting arms are arranged at the left end and the right end of the upper surface of the supporting plate correspondingly, and supporting plates which are bilaterally symmetrical are arranged in the middle of the upper surface of the supporting plate; the upper ends of the supporting plates are fixedly connected with the bottom end of the outer surface of a container shell. And the rotating mechanism comprises a rotating shaft and a preheating container, rotating columns are rotationally connected to the inner side faces of the supporting arms correspondingly, and according to the on-line preheating machine for PP production, a PP material is turned over and heated in the container. The PP material is heated more evenly, the preheating effect is better, meanwhile, automatic discharging is achieved, and the working efficiency of PP production is greatly improved.

The present invention discloses a spiral coil heating flame preheating plug and a diesel engine, belonging to the technical field of engine cold start auxiliary system. The spiral coil heating flame preheating plug comprises a flame cover, a shell, an electromagnetic induction evaporation net, an oil inlet pipe and an electromagnetic induction spiral coil, wherein the wall of the flame cover is provided with ventilation holes, and is coaxially arranged in the inner cavity of the lower part of the shell; the electromagnetic induction evaporation net is sandwiched between the inner wall of the shell and the outer wall of the flame cover; one end of the oil inlet pipe is connected to the electromagnetic induction evaporation net, and the other end can be connected to the oil pump; the electromagnetic induction wire spiral coil is spirally wound on the outer wall of the shell and the position corresponding to the electromagnetic induction evaporation net; the inner cavity of the upper part of the shell forms a mixed gas cavity. The spiral coil heating flame preheating plug can significantly improve the cold start performance of the diesel engine in extremely cold and harsh environments.

The utility model discloses a heating and pressurizing belt for rapid transfusion or blood transfusion. The heating and pressurizing belt comprises a long strip belt, wherein magic tapes are arranged at two ends of the long strip belt so as to form an annular shape; the long strip is of an interlayer structure, an air storage bag is arranged in a cavity, and a water storage annular pipe is attached to the inner side of the long strip. The inflatable ball is communicated with the air storage bag through an air injection pipe, and the water injection pipe is communicated with the water storage annular pipe; an air valve is arranged on the air injection pipe, and a sealing cover is arranged on the water injection pipe. The water storage annular pipe is attached to the inner side of the long strip provided with the air storage bag, after warm water is injected, the heating and pressurizing functions can be achieved at the same time, and then liquid can be rapidly input into the body of a patient through the pressurizing function after the liquid is preheated; in cold seasons, it can be ensured that liquid rapidly infused into the body of a patient is close to the body temperature, the situations of temperature loss, cold vibration, abnormal blood coagulation, abnormal blood pressure or arrhythmia and the like of the patient due to the fact that the temperature of the infused body is too low are avoided, and the safety of rapidly infusing the liquid into the body of the patient is effectively improved.

The utility model discloses a vertical kiln bottom induced air preheating structure which comprises a kiln body, a preheater is arranged on one side of the kiln body, a first air inlet is fixedly formed in the surface of one side of the preheater, one end of the first air inlet is in threaded connection with a supporting cylinder, and a filter screen is installed at the end of the supporting cylinder. An air extractor is installed on the top face of the preheater, the air inlet end of the air extractor communicates with the preheater, a first air pipe is installed at the air outlet end of the air extractor, a smoke exhaust pipe is installed on the top of the kiln body, and a preheating pipe is arranged in the smoke exhaust pipe in a surrounding mode. According to the air exhauster, the filter screen is arranged and installed at the end of the supporting cylinder, the supporting cylinder is in threaded connection with the first air inlet, the filter screen can filter sucked air, the phenomenon that the air exhauster is damaged by impurities is avoided, meanwhile, due to the detachable design, the filter screen is convenient to disassemble, maintain and replace, operation is easy and convenient, time and labor are saved, and the air exhauster is suitable for popularization and application. The device is high in practicability and worthy of popularization.

The combustor comprises an inner combustion part, an outer combustion part, a plurality of connecting spokes and a heat exchange piece, the outer combustion part is arranged on the outer side of the inner combustion part in a surrounding mode, the connecting spokes are connected with the inner combustion part and the outer combustion part, and the heat exchange piece is arranged on the outer side of the inner combustion part. A first channel communicated with the air supply channel is formed between every two adjacent connecting spokes, the heat exchange piece is located between the inner combustion part and the outer combustion part and comprises a lap joint part and a heat exchange part which are connected, the lap joint part is detachably connected with the connecting spokes, and the heat exchange part is detachably connected with the lap joint part. And the heat exchange part is arranged corresponding to the first channel. The heat exchange part is arranged between the inner combustion part and the outer combustion part, the heat exchange area between bottom inlet air and the combustor during secondary air supply is increased through the heat exchange part, air entering the combustor from the outside can be heated by making contact with the heat exchange part, the preheating effect of the air during secondary air supply is improved, and the combustion efficiency of the combustor is improved.

The utility model discloses liquid seasoning processing and conveying equipment which comprises a preheating mechanism, and an auxiliary heating mechanism is arranged on one side of the preheating mechanism. The preheating mechanism comprises a conveying shell, a conveying motor is fixed to the surface of the conveying shell, an output shaft of the conveying motor penetrates through the conveying shell and fixes spiral blades, a heat conduction jacket is fixed to the surface of the conveying shell, a plurality of heat conduction pipes are fixed to the inner wall of the heat conduction jacket, and one end of each heat conduction pipe penetrates through the heat conduction jacket and communicates with a liquid drainage pipe. A liquid storage tank is communicated with the bottom of the liquid discharge pipe, a plurality of first electric heating pipes are installed on the surface of the liquid storage tank, a first conveying pump is communicated with the surface of the liquid storage tank, a liquid adding pipe is communicated with the surface of the first conveying pump, an air heater is arranged on one side of the liquid storage tank, and an air supply pipe is communicated with the surface of the air heater. The liquid seasoning preheating device has the advantage of being capable of preheating liquid seasoning in the conveying process, and the problem that at present, the liquid seasoning does not have the preheating function is solved.

The application discloses an energy-saving multifunctional casting blank flame cleaning device, wherein fixed end pistons and floating end pistons are additionally arranged in the cleaning oxygen cavity of the upper and lower horizontal distributor piston cylinder assembly, the cleaning oxygen cavity is divided into three chambers, i.e., a fixed end chamber, an intermediate use chamber and a floating end chamber, the casting blank cross section is divided into eight optional cleaning areas, PID adjustment is performed on the other eight cleaning areas by using independent valve stations, multifunctional combination of the eight optional cleaning areas is realized, the surface defects of the casting blank can be cleaned in a fixed area and a fixed depth, unnecessary area cleaning is reduced, metal loss is reduced, the yield of finished products is increased, cost reduction and benefit increase are achieved, and the energy consumption is reduced. For hot blank, oxygen pressure of the relatively low temperature area at the edge, such as the top fixed end, the top floating end, the bottom fixed end and the bottom floating end, is increased to obtain a target cleaning depth, improve the hot blank hot delivery rate, reduce the energy consumption and help green metallurgy.

The utility model provides a cascade type high-temperature heat pump system which comprises a first-stage heat pump system, a second-stage heat pump system and a water supply system, the first-stage heat pump system comprises an enthalpy spraying compressor, a four-way valve, a first-stage heat exchanger, an evaporation assembly, a first-stage throttler and a separator, and the enthalpy spraying compressor is provided with an exhaust port, an air return port and an enthalpy spraying port. The evaporation assembly comprises a fin type heat exchanger with a fan, the fin type heat exchanger is provided with a supercooling heat exchanger, and an exhaust port of an enthalpy spraying compressor, a four-way valve, a first-stage heat exchanger, a first-stage throttler, the fin type heat exchanger, a separator and an air return port of the enthalpy spraying compressor are communicated and form a first-stage refrigerant circulation main path. And enthalpy spraying openings of the first-stage heat exchanger, the supercooling heat exchanger and the enthalpy spraying compressor are communicated and form an air suction loop. The environment sensible heat is fully utilized for heat exchange, the preheating effect is remarkable, a traditional electric auxiliary heating mode is replaced, the energy utilization rate is increased, the use cost is reduced, meanwhile, freezing and icing are effectively prevented, and the device is suitable for being used in the ultralow-temperature environment.

The invention discloses a plastic bag blow molding device, and belongs to the technical field of plastic bag processing. A plastic bag blow molding device comprises a frame body and further comprises a blow molding machine fixedly installed on the frame body, an extrusion head of the blow molding machine is fixedly connected with a central pipe, and a first nozzle is installed on the outer wall of the central pipe; the vertical pipe is arranged at the upper end of the extrusion head and surrounds the periphery of the central pipe, a plurality of outer pipes arranged at equal intervals are fixedly installed on the inner wall of the vertical pipe, second nozzles facing the central pipe are fixedly installed on the outer pipes, and a reciprocating part for driving the vertical pipe to rotate in a reciprocating mode is arranged on the blow molding machine; the tubular film can be cooled and shaped more uniformly, and the final quality of plastic bags is guaranteed.

The utility model relates to the field of heating mechanisms, in particular to a field operation engine tungsten alloy heater which comprises a mobile power source, a power cable is installed at the outer end of the mobile power source, an engine oil storage tank is connected to the end, away from the mobile power source, of the power cable, a lower sealing groove is formed in the lower inner wall of the engine oil storage tank, and a motor is fixedly connected to the inner end of the lower sealing groove. According to the scheme, in the preheating process, the motor in the engine oil storage tank can drive the bottom transverse rotating rod to rotate, an electric heating wire rod on the motor can stir engine oil liquid at a constant speed, the engine oil liquid can be evenly heated, the engine oil liquid can be evenly heated, the engine oil liquid can be evenly heated, and the engine oil liquid can be evenly heated. And electric heating wire rods in the upper vertical glue vertical rod and the bottom transverse rotating rod are matched to generate a heat source, so that the stirring speed of engine oil in the engine oil storage tank can be effectively increased, the preheating effect is better, and the starting process of an engine is smoother.

The utility model relates to the technical field of boilers, and particularly discloses a vertical pulverized coal corner tube boiler which comprises a boiler body and a tail gas device, the tail gas device is located on the right side of the boiler body, an exhaust pipeline is connected between the tail gas device and the boiler body in an inserted mode, a burner is installed on the left side of the boiler body, and a heat exchange box is fixedly connected in the tail gas device. A gas suction pipeline is inserted into the bottom end of the heat exchange box, the bottom end of the gas suction pipeline penetrates through the tail gas device, a gas pipeline is inserted into the top end of the heat exchange box, and the end, away from the heat exchange box, of the gas pipeline is inserted into the combustor. And the dust removal mechanism further comprises a rotating ring rotationally connected to the outer side of the air suction pipeline, a small rod is fixedly connected to the top of the rotating ring, through cooperation of the structure, high-temperature smoke entering the heat exchange area can be filtered, and it is avoided that preheating of air is affected by stable smoke dust in the smoke.

The invention relates to the technical field of glass processing equipment, in particular to preheating equipment for producing characteristic glass. Comprising a support; the outer wall of the bottom of the thermal insulation furnace box is fixedly connected with the outer wall of the top of the bracket; the outer wall of the heating wire is fixedly connected with the side wall in the thermal insulation furnace box; the outer wall of the conveying belt is rotationally connected with the inner wall of the bracket through a rolling roller; the outer wall of the ventilation device is fixedly connected with the outer wall of the bracket; the input end of the circulating fan is fixedly connected with the outer wall of the ventilation device; the outer wall of the conveying device is fixedly connected with the output end of the circulating fan; the ventilation rate in the thermal insulation furnace box can be controlled by arranging the ventilation device composed of the opening and closing device and the receding device, part of high-temperature air can pass through the through groove to be located below the glass through the receding device, and in the gradual moving process of the glass, the bottom of the glass is subjected to preheating treatment as well; and the purpose of uniformly heating the glass is achieved.

The utility model discloses a preheating device for seat cushion assembly, which belongs to the technical field of seat cushion assembly and comprises a mounting rack, a conveying belt is mounted in the mounting rack, a second motor is mounted at the lower right corner of the mounting rack, a hot air channel is connected to the upper portion of the mounting rack through bolts, and the second motor is mounted at the lower right corner of the mounting rack. A first heating assembly, a second heating assembly and a first motor are installed above the hot air channel from left to right. A conveying belt is arranged to drive a cushion to move into a hot air channel from a second blocking pad, at the moment, two sets of power source boxes are matched with a U-shaped heating pipe to guide heat into the hot air channel, meanwhile, a first motor drives a fan assembly to blow heat in the hot air channel to all parts of the hot air channel, and after the cushion is heated, the heat in the hot air channel is heated. The heated cushion is taken out from the position of the blocking pad, and finally the cushion is manually assembled, so that the cushion can be uniformly heated, the preheating effect is good, and subsequent manual assembly is facilitated.

The utility model discloses a heat exchange equipment laser cladding feeding device which comprises a fixed skirt and a shell support, a storage tank is installed on the fixed skirt, a feeding port is formed in the top of the storage tank, a discharging port is further formed in the bottom of the storage tank, the discharging port is communicated with a laser outlet of a cladding head, and the shell support is connected with the shell support. A belt wheel transmission mechanism used for being connected with a motor is fixed to the shell support, the lower end of the belt wheel transmission mechanism is connected with a driving gear, the driving gear is meshed with driven gears of different storage tanks through a gear shifting mechanism, one side of each driven gear is connected with an anti-caking turbine assembly, and each anti-caking turbine assembly comprises a rotating shaft. The turbine blade is fixedly connected with the rotating shaft, a scraping plate is arranged at the tail end of the turbine blade, a sieve plate assembly is arranged below the scraping plate in parallel, the scraping plate is rigidly connected with the rotating shaft, and the sieve plate assembly is detachably connected with the rotating shaft. The problem that the laser cladding efficiency is low due to material caking, accumulation and uneven heating in the laser cladding process is solved.

The utility model relates to the technical field of alloy material processing, in particular to a heat treatment device for non-ferrous metal alloy material processing, which comprises a box body, one side of the inner wall of the box body is fixedly connected with a stirring mechanism, and the stirring mechanism comprises a motor, a connecting rod, a transmission connecting rod, a transmission shaft, a fixed bearing and a connecting rotating shaft. A motor is fixedly connected to one side of the inner wall of the box body, connecting rods are fixedly connected to the two sides of the motor, transmission connecting rods are fixedly connected to the surfaces of the connecting rods, transmission shafts are fixedly connected to the other sides of the transmission connecting rods, and connecting rotating shafts are fixedly connected to the other sides of the transmission shafts. According to the utility model, through the arrangement of the motor, under the action of the connecting rod, the transmission connecting rod and the connecting shaft, the stirring tank can rotate under the support of the transmission connecting rod, so that materials in the stirring tank roll over along with the rotation of the stirring tank, the problem of preheating dead angles caused by raw material accumulation is avoided, alloy materials are uniformly heated, and the preheating effect is better.

The invention belongs to the technical field of solid waste treatment, and particularly relates to a tar residue treatment system and a treatment process thereof. High-temperature hot gas generated in the pyrolysis process is utilized for multiple times, and the energy utilization rate is effectively increased. One part of residual high-temperature hot gas after pyrolysis is completed is sent to the combustion chamber to be heated and then is continuously used for the pyrolysis process, and the other part of the residual high-temperature hot gas is used for secondary preheating and primary preheating of the tar residue, so that the tar residue can reach an ideal preheating temperature before entering the continuous pyrolyzer, heat energy is recycled to the maximum extent, and energy waste is reduced. The pyrolysis process is carried out in a closed system, and emission of harmful gas is reduced. And residual hot air is discharged after being treated by the desulfurizing tower, so that the influence on the environment is further reduced. In addition, the non-condensable gas serves as fuel to be fed into the combustion chamber again to be combusted, waste recycling is achieved, and pollutant emission is reduced. The system is suitable for large-scale and continuous tar residue treatment, and can meet the requirements of enterprises with different scales.

The double-circulation perlite ore sand gradient preheating system utilizing the waste heat of the tail gas of the fuel gas expansion furnace is provided with the double-return-stroke channels, the material heating time is prolonged, the heating temperatures of the double-return-stroke channels are different, low-temperature preheating is conducted firstly, then medium-temperature preheating is conducted, and the heating efficiency is improved. And most free water and part of bound water in the ore sand are removed more slowly and mildly. According to the technical scheme, an outer-layer material channel is formed between an outer pipe and a middle pipe, and a first spiral conveying structure is arranged on the inner wall of the outer-layer material channel; an inner-layer material channel is formed between the middle pipe and the inner core pipe, and a second spiral conveying structure is arranged on the inner wall of the inner-layer material channel; the heating cavity consists of an inner cavity of the inner core tube; and the rotating direction of the first spiral conveying structure is opposite to that of the second spiral conveying structure, so that materials are conveyed from the first end to the second end in the outer-layer material channel, enter the inner-layer material channel from the second feeding hole in the second end and are conveyed from the second end to the first end in the inner-layer material channel.

The utility model relates to the technical field, in particular to an efficient waste heat utilization device for drying glutinous rice flour, and aims to solve the technical problem that the glutinous rice flour with higher density cannot be uniformly preheated even though waste heat is used for preheating in the prior art. The two ends of the gas injection pipe in the conveying cylinder are communicated with two gas distribution pipes, a plurality of spiral pipes with the same rotating direction and equal screw pitches are communicated between the two gas distribution pipes, the inner-layer spiral pipe is connected with the gas injection pipe, the outer-layer spiral pipe is in contact with the inner wall of the conveying cylinder, and the gas injection pipe in the area covered by the spiral pipes is arranged in a solid mode; the conveying cylinder is fixed through the support, high-temperature gas is guided into the spiral pipe, the temperature of the spiral pipe rises to heat air in the conveying cylinder and make direct contact with glutinous rice flour at the same time, and the glutinous rice flour is evenly preheated without dead corners while conveyed. Therefore, the problem that hot air cannot preheat lower-layer glutinous rice flour and raise dust in the prior art is solved.

The invention discloses a nickel ore roasting kiln for waste heat recovery, and relates to the technical field of nickel ore roasting kilns, the nickel ore roasting kiln comprises a base plate and a heat recovery assembly, the heat recovery assembly is arranged above the base plate, and the heat recovery assembly comprises a discharging frame, a discharging groove, a partition frame, an air adding cover, a rotating groove, an air inlet pipe, an air adding groove, an air inlet, an inclined hole, a heat insulation shell and a heat absorption coil pipe; a discharging frame is arranged above one side of the chassis, and discharging grooves are symmetrically formed in one side of the discharging frame. When the device is used, heat emitted by the shell can be recycled, air is heated through the heat, the air supply temperature is increased, then the roasting efficiency is improved, heat of high-temperature tail gas can be used for conducting waste heat on raw materials, the roasting efficiency is improved, the raw materials are smashed before preheating, insufficient roasting caused by the fact that the raw materials are too large is avoided, and the service life of the raw materials is prolonged. During roasting, the raw materials can be turned and conveyed, and the suspension time of the raw materials is prolonged, so that the mixing effect of the raw materials and air is improved, and the roasting efficiency is improved.

Flue gas in a flue gas channel is divided into a high-temperature area, a medium-temperature area and a low-temperature area, so that combustion-supporting air firstly absorbs heat in the low-temperature area and fully absorbs waste heat in the low-temperature flue gas, and then enters the high-temperature area to further absorb heat and fully absorb the waste heat in the flue gas after being heated; the temperature of combustion-supporting air is increased to the maximum extent; the steel billet in the steel billet preheating chamber and the flue gas perform reverse convection motion, the steel billet preheating chamber is long and large in space, the steel billet absorbs waste heat in the flue gas from a low-temperature area to a medium-temperature area in sequence, the temperature of the steel billet is continuously increased, and the heated steel billet enters a high-temperature area through a flue gas gate to continuously absorb heat and increase the temperature, so that the temperature of the steel billet is increased to the maximum extent; and waste heat cascade recovery and full utilization are realized. The device has the advantages of scientific and reasonable design, good combustion-supporting air and billet preheating effect, high flue gas heat energy recovery rate and the like.

The utility model discloses a boiling dryer based on engineering plastic production, which comprises a drying outer box and a support plate, the support plate is arranged at the inner bottom end of the drying outer box, a drying inner box is arranged in the middle of the top of the support plate, a screw rod is arranged on one side of the inner bottom end of the drying inner box, a transmission block is arranged on the screw rod, and the transmission block is connected with the support plate. A sliding rod is arranged at the position, parallel to the lead screw, of the other side in the inner drying box, a sliding block is arranged at the position, corresponding to the transmission block, of the sliding rod, scraping plates are arranged on the sliding block and the transmission block, a filtering box is arranged at the top end of one side of the outer drying box, and a drying agent is arranged in the filtering box. And activated carbon is arranged in the filter box at the top of the drying agent. The material adhering to the bottom is scraped through the material scraping plate, the adhering position of the material is prevented from yellowing, exhausted hot air can be dried and adsorbed in the drying process, and the preheating effect is better.

The invention relates to the technical field of vacuum coating, and discloses an adjustable vacuum coating preheating system which is characterized in that a heat conduction box and a preheating mixing box are mounted on the outer side of a vacuum coating machine from left to right, and a heating box and a cooling box are arranged on the outer side of the preheating mixing box from top to bottom; two sets of heating frames are arranged in the heating box, heating pipes are symmetrically arranged in the two sets of heating frames, and an exhaust fan is further arranged at the position, on one side of the heating frames, in the heating box; cooling water is arranged in the cooling box, a semiconductor chilling plate is further installed on the inner front surface of the cooling box, and the water outlet end of the infusion pump is connected with a circulating pipe. Through the arrangement of the exhaust fan, the heating frame, the heating pipe, the exhaust pipe and the air inlet hole in the heating box and the arrangement of the infusion pump, the circulating pipe and the semiconductor chilling plate in the cooling box, the temperature can be regulated and controlled, so that the interior of the vacuum coating machine can be conveniently preheated.