1704 results about "Air heater" patented technology

The invention relates to the technical field of plastic crushing, in particular to a plastic crushing device which comprises a crushing box, a feeding hopper is installed on the upper portion of one side of the crushing box, two crushing shafts are rotatably installed between the two ends of the crushing box, and a crushing roller is installed in the middle of the outer side wall of each crushing shaft. Two supports are installed above one side of the smashing box, vertical plates are installed on the supports, and a dust removal box is arranged between the two vertical plates. According to the plastic cutting device, the hollow shaft is rotated firstly, the hollow shaft drives the cutting blades to rotate, plastic is cut into small pieces, follow-up smashing is facilitated, meanwhile, hot air generated by the air heater enters the hollow shaft through the rotating connector and then is discharged through the air outlet, wet dust attached to the surface of the plastic is dried, moisture in the dust is evaporated, the dust becomes dry, and adhesive force is weakened; and the plastic is dedusted firstly, so that the subsequent cleaning is simpler, the consumption of water resources is reduced, and the cleaning cost and the treatment time are reduced.

A mobile heater adapted to heat air from the environment and to supply the heated air into a cabin like a recreational vehicle or a tent, the heater comprises a housing, a supply air inlet arranged at a side of the housing, a supply air outlet arranged at another side of the housing, a supply air channel inside the housing extending the between the supply air inlet and the supply outlet, means for generating a supply air flow inside the supply air channel from the supply air inlet to the supply air outlet, and flexible supply air hose that can be removably coupled to the supply air outlet and by means of which the heated air can be led inside the cabin, the heater further comprises a burner chamber inside the housing, wherein the supply air channel passes through the burner chamber, a burner arranged inside the burner chamber, a heat exchanger arranged inside the burner chamber and being designed as a tube section that forms at least a section of the supply air channel, a control unit and a user interface , wherein the burner extends below and along a vertical projection of the heat exchanger, and the heat exchanger has a plurality of firstlamellas and second lamellas, wherein the first lamellas extend from the outer surface of the tube section inside the burner chamber and parallel to a vertical plane, and the second lamellas extend from the inner surface of the tube section inside the supply air channel and along the direction of the supply air flow.

The invention discloses a compressed air graded freeze-drying system which comprises a refrigeration compressor, a condenser, a refrigeration heat regenerator, a high-temperature evaporator, a low-temperature evaporator and an air heat regenerator, compressed air is pre-cooled through the air heat regenerator and then sequentially enters the high-temperature evaporator and the low-temperature evaporator to be freeze-dried, and then the compressed air enters the high-temperature evaporator and the low-temperature evaporator to be freeze-dried. And finally, rewarming is conducted through the air regenerator. The pressure dew-point temperature of the dried air is set through a dew-point temperature controller, when the outlet air temperature pressure dew-point temperature is higher than a set value, the driving frequency of a refrigeration compressor is increased, the system refrigerating capacity is increased, and the driving frequency of the refrigeration compressor is reduced, and the system refrigerating capacity is reduced; by introducing the high-temperature evaporator and the refrigeration compressor with the air supply function, the design difficulty of a single evaporator is reduced, the heat exchange efficiency is enhanced, stable control over a low-pressure dew point is facilitated, the compression work of a refrigerant is saved, and the operation energy efficiency of the compressed air freeze drying system is improved.

The utility model relates to the technical field of feed processing equipment, in particular to a feed processing waste heat recovery device which comprises a feed processing oven, an air cavity is installed on the left side of the feed processing oven, an air heater is installed on the air cavity, and a waste heat recovery mechanism is arranged on the right side of the feed processing oven. The waste heat recovery mechanism comprises a mounting frame and a heat energy recovery water tank, and a plugging plate is fixedly connected between the mounting frame and the heat energy recovery water tank. By means of the waste heat recovery mechanism, during feed drying processing, waste heat generated in the drying oven is discharged to the outer side of the heat energy recovery water tank through the air outlet pipeline, heat of the waste heat is transmitted to stored water in the heat energy recovery water tank through the pipe wall of the air outlet pipeline, and high-temperature hot water is generated in the heat energy recovery water tank through the waste heat. And high-temperature hot water generated in the heat energy recovery water tank can be discharged through the water outlet pipe for municipal heating or process heating, so that enterprises are helped to achieve the purposes of energy conservation and emission reduction, and the resource utilization rate is increased.

The utility model discloses a heat sealing device for coated paper production, which comprises a base, two ends of the base are respectively and movably connected with a feeding roller and a receiving roller, the top of the base is provided with a coating machine, an air heater is arranged in the coating machine, the tops of two ends of the base are movably connected with clamping jaws, one side of each clamping jaw is provided with a first groove, and the other side of each clamping jaw is provided with a second groove. A plurality of first bosses are arranged at the two ends of the base correspondingly, limiting holes are transversely formed in the tops of the clamping jaws, a plurality of second bosses are arranged on the two sides of the top of the base correspondingly, and positioning pins are transversely and movably connected between the second bosses. When a feeding roller and a receiving roller need to be replaced, a handle is pulled to pull out a positioning pin, rapid replacement can be achieved by taking up a clamping jaw, the structure is simple, operation is convenient, and the problems that according to an existing heat sealing device for PE coated paper production, paper on the feeding roller needs to be replaced after heat sealing, replacement is troublesome, and cost is high are solved. And the production efficiency is influenced to a certain extent.

The sock drying machine comprises a drying box, an air heater, a hot air pipe, a plurality of air outlets and a plurality of sock plates, and further comprises a lower box body fixedly connected to the bottom of the drying box, and a plurality of through grooves arranged in a matrix mode are formed in the top of the lower box body; the lifting control unit is used for enabling all the sock plates to ascend and descend in the corresponding through grooves, and the lifting control unit comprises a lifting plate which is installed in an inner cavity of the lower box body in a floating mode through a plurality of first springs; the top ends of the pull rods are fixedly connected with the lifting plate, and the lower ends penetrate below the lower box body; in daily use, by the adoption of the technical scheme, when dried socks need to be taken down from all the sock plates, the pedal is treaded downwards, the pedal, all the pull rods, the lifting plate and all the sock plates descend, when all the sock plates descend in the corresponding through grooves, the socks cannot enter the through grooves, and the socks cannot enter the through grooves; and the socks are taken off from the sock plates and are left in the inner cavity of the drying box, and workers only need to pull out the socks to finish blanking.

The invention discloses a mechanical lossless separation device for earthworms and breeding materials and a use method of the mechanical lossless separation device. The device comprises a vehicle body, a lifting mechanism, a brushing mechanism, a hot air system, a scraper assembly and a power supply control system, the vehicle body comprises a chassis and a frame structure and is in rolling connection to two rails arranged side by side. The lifting mechanism comprises a lifting driving assembly and a lifting box, and the lifting box is slidably connected into the frame structure; the brushing mechanism comprises two brush driving assemblies and a plurality of brush assemblies, the two brush driving assemblies are installed on the two sides of an inner cavity of the lifting box correspondingly, and the brush assemblies are installed at the output ends of the brush driving assemblies. The hot air system comprises an air heater and two exhaust pipes; the hot-air blower is installed in the lifting box, and the two exhaust pipes are both installed at the exhaust end of the hot-air blower. The device can realize mechanical lossless separation of earthworms and culture materials, collects finished earthworms, has the advantages of good separation effect, high automation degree, convenience in operation, low manufacturing cost, reliability in use and the like, and is easy to popularize in the field of earthworm culture.

The utility model provides a baking cooking device which comprises an inner container assembly, an air heater baffle, a back plate and a purification assembly, the inner container assembly and the back plate are located on the two sides of the air heater baffle respectively, an inner container cavity is formed between one side of the air heater baffle and the inner container assembly, and a hot air cavity is formed between the other side of the air heater baffle and the back plate. The air heater baffle is provided with an air outlet hole and an air return hole to communicate the inner container cavity with the hot air cavity, and at least part of the purification assembly is arranged in the hot air cavity.

The invention discloses a new material drier viscosity detection device, and relates to the technical field of new material drier detection.The new material drier viscosity detection device comprises a workbench and a switching assembly, a sample cup is arranged at one end of the top of the workbench, a detection assembly is arranged in the center of the top of the workbench, and the switching assembly is connected to the upper portion of the detection assembly; and the switching assembly comprises a rotating motor. The lifting motor drives the screw rod to drive the lifting seat to move downwards, so that the reset spring pushes the rotating ring to synchronously descend, automatic butt joint of the rotor and the viscometer main body and detection operation by immersing the rotor into a new material drier solution are realized, and the system stability is enhanced through a guide column limiting structure during detection; after detection is finished, when the lifting seat resets, the connecting fluted disc can be automatically separated, the rotor is automatically transferred to the ultrasonic cleaning machine in a detection gap through linkage of the rotating motor and the cleaning mechanism, and seamless connection of the detection process and the cleaning process is achieved in cooperation with rapid drying of an air heater.

The invention provides a coating device for paper cup production, and belongs to the technical field of paper cup processing, the coating device comprises a transmission frame and a spraying frame, a paperboard is arranged above the transmission frame, the transmission frame is connected with a lifting assembly, the transmission frame is connected with a collecting box, the coating device further comprises a trowelling assembly, the trowelling assembly is connected with a hot-air blower, and the hot-air blower is connected with the spraying frame. The trowelling assembly is used for uniformly scraping a coating on the surface of the paperboard; the device has the beneficial effects that through the lifting assembly and a V-shaped scraper of the trowelling assembly, it can be guaranteed that the thickness of a coating is uniform, redundant paint can be guided to a collecting box and can be recycled after being treated, and the production cost is reduced; meanwhile, the air heater synchronously blows out hot air after the coating is scraped, rapid curing of the coating is promoted, the product quality is improved, the air heater can switch airflow paths to automatically clean the scraping plate, residual coating is stripped through high-speed airflow, it is avoided that subsequent use is affected by drying and caking, the manual cleaning cost is saved, and the long-term scraping precision is guaranteed.

The invention discloses a rotary molecular sieve oxygen generator, and belongs to the technical field of molecular sieve oxygen generation, the rotary molecular sieve oxygen generator comprises a base, one side of the top of the base is fixedly provided with an oxygen collecting bin, the base is fixedly provided with an oxygen outlet pipeline on one side of the top of the oxygen collecting bin, and the base is fixedly provided with a dehumidification bin on one side of the oxygen collecting bin; the rotary dehumidification mechanism is designed in the dehumidification bin, the core of the rotary dehumidification mechanism is that a heating chamber and a dehumidification chamber are independently arranged in the rotary bin, and the heating chamber and the dehumidification chamber are filled with a moisture-containing dehumidification molecular sieve and a dry dehumidification molecular sieve respectively. The continuous circulation of dehumidification and regeneration is achieved, humid air is introduced into the dehumidification chamber through the air suction pump, moisture is rapidly adsorbed by the dry dehumidification molecular sieve, efficient dehumidification is completed, the molecular sieve completing moisture absorption enters the heating chamber along with the rotating bin, moisture is rapidly desorbed under the action of hot air provided by the high-temperature air heater, and the adsorption performance is recovered.

The tempering furnace for the die steel comprises a furnace body, a supporting seat, a connecting column, a placing frame and an air heater, an opening is formed in the top of the furnace body, a furnace cover for sealing the opening is arranged on the top of the furnace body in a matched mode, the supporting seat is driven by a driver to be rotationally arranged at the bottom in the furnace body, and a connecting groove is formed in the top of the supporting seat; the connecting column is vertically arranged in the furnace body, the top of the connecting column is rotationally connected with the furnace cover through a rotary connecting piece, and the bottom end of the connecting column is in key connection into the connecting groove. The multiple placing frames are arranged on the connecting column in a staggered mode from bottom to top, and each placing frame is provided with a plurality of positioning holes used for placing die steel; a hot air outlet pipe of the air heater is communicated with the inner bottom of the furnace body; compared with the prior art, the die steel tempering device has the following technical effects that multiple pieces of die steel can be subjected to tempering treatment in the cavity at a time, hot air is evenly distributed in the cavity, and the tempering quality of the die steel is improved.

The invention relates to the technical field of fiber fusion, and discloses a textile fiber cotton continuous forming device which comprises a forming machine, a cotton plate forming mechanism is arranged in the forming machine, and the cotton plate forming mechanism comprises a forming die, a pre-forming assembly and a glue solution blowing-floating curing assembly, and the pre-forming assembly and the glue solution blowing-floating curing assembly are matched with each other; a forming discharging port is formed in the forming die, a discharging conveying belt is arranged at the forming discharging port, the pre-forming assembly is composed of a feeding pretreatment channel and a forming continuous cylinder, and the discharging end of the feeding pretreatment channel communicates with the forming continuous cylinder and is flatly laid on the surface of the discharging conveying belt; and the glue solution blowing, floating and curing assembly comprises an air heater and glue blowing strips which are transversely and uniformly arranged along the discharging conveying belt. Through precise cooperation of the hot-air blower and the transverse glue blowing strip, double optimization of glue solution solidification and permeation is achieved, hot air jet from bottom to top forms a reverse airflow field, the falling glue solution generates a suspension permeation effect before solidification, the permeation depth of the glue solution is increased, and the bonding strength of fiber nodes is improved.

The invention relates to the technical field of engine starting, and provides a cold start auxiliary system of a methanol engine, a control method of the cold start auxiliary system and related equipment. The cold start auxiliary system of the methanol engine comprises an air inlet heater which is assembled on the inner wall of an air inlet pipeline of the methanol engine and used for heating air in the air inlet pipeline; the spark plug heater is assembled on the outer wall of a spark plug of the methanol engine and used for heating the spark plug; the nozzle heater is assembled on the outer wall of a nozzle of the methanol engine and used for heating methanol fuel flowing through the nozzle; the air inlet temperature sensor is assembled on the inner wall of an air inlet pipeline of the methanol engine and is used for detecting the temperature of air in the air inlet pipeline; the control unit is in communication connection with the air inlet heater, the spark plug heater, the nozzle heater and the air inlet temperature sensor and used for controlling the air inlet heater, the spark plug heater and the nozzle heater according to the temperature of cooling liquid of the methanol engine.

The utility model discloses an infrared carbon and sulfur analysis device for sulfur concentrate inspection. The infrared carbon and sulfur analysis device comprises a case as well as a combustion assembly, a cooling and dehumidifying assembly, a carbon infrared detection tank and a sulfur infrared detection tank which are connected in sequence, the cooling and dehumidifying assembly is composed of a heat exchange tank A, a heat exchange tank B, a dehumidifying disc, a fan, an air heater and a stirring mechanism. The heat exchange tank A and the heat exchange tank B are internally provided with a spiral pipe A and a spiral pipe B respectively, the spiral pipes are connected through a connecting pipe to form a closed passage, the connecting pipe is provided with a pressure pump, and the closed passage is filled with a heat exchange medium. And the dehumidification disc is filled with water absorption filler. Gas components generated by fully combusting the sulfur concentrate by the combustion assembly sequentially pass through the heat exchange tank A, the dehumidification disc, the carbon infrared detection tank and the sulfur infrared detection tank and then are exhausted, and external air extracted by the fan sequentially passes through the heat exchange tank B, the air heater and the dehumidification disc and then is exhausted. The sulfur concentrate detection device is reasonable in design structure, simple and convenient to operate, suitable for rapid and accurate detection of sulfur concentrate, and high in application value.

The invention relates to the technical field of greenhouse temperature control, and discloses a crop growth controllable agricultural greenhouse intelligent environment control system and method based on big data, and the system comprises a central processing unit which is used for processing data and coordinating the operation of all modules; the weather forecast system comprises a data extraction module, a data processing module and a data analysis module, the data extraction module is used for acquiring local weather forecast information in real time, and the data processing module performs standardization processing on weather information and extracts key parameters; and the data analysis module predicts a cold current cooling time node in combination with historical meteorological data. According to the invention, weather forecast information sent by a local weather forecast system is processed and analyzed, key information is obtained, a time node during cold current cooling is obtained, and a geothermal line or an air heater is started in advance before the node to be cooled arrives, so that the geothermal line or the air heater works at a low temperature for preheating; power can be conveniently and rapidly increased to achieve the heat preservation purpose.

The invention discloses a metal pipe fitting grinding and polishing device and a using method thereof, and relates to the technical field of grinding and polishing devices.The metal pipe fitting grinding and polishing device comprises a machining mechanism, an auxiliary mechanism comprises a treatment box, a containing groove, a generator, an air heater and a plurality of cylindrical holes, and three partition plates are fixedly distributed in the treatment box at equal intervals; three baffles are arranged on one side of the treatment box, two symmetrical flow guide plates are fixed to the position, close to the edge, of the top of one of the baffles, and a plurality of transducers are distributed and installed at the bottom of the treatment box at equal intervals. According to the grinding and polishing device for the metal pipe fitting, the oil sludge on the surface of the single-head screw does not need to be carried to a place where the oil sludge on the surface of the single-head screw can be removed by a worker for treatment, so that the cleaning time of the single-head screw is shortened, the machining efficiency of the metal pipe fitting is guaranteed, and the using effect and the using efficiency of the grinding and polishing device for the metal pipe fitting are improved.

The invention discloses a coal gangue decarburization method and device, the device comprises a feeding bin, a cyclone preheating separator and a cyclone separator, the feeding bin is communicated with the cyclone preheating separator, and the cyclone preheating separator is provided with an auxiliary heating device; the cyclone preheating separator is communicated with the suspension furnace, and the cyclone preheating separator is communicated with the suspension furnace through the cyclone separator; one end of the suspension furnace is communicated with an air heater, and the other end is communicated with the cyclone separator; the cyclone separator is communicated with an air feeder; calcination at the sintering temperature not higher than 1050 DEG C is realized, so that the problems of overhigh ignition loss and sintering are solved, the ignition loss is effectively controlled to be 0.5% or below, and meanwhile, the carbon content is controlled to be 0.3% or below; the coal gangue powder can be calcined in 250 meshes, and the plasticity index of the coal gangue powder is not reduced.

The utility model discloses an energy-saving chain belt tunnel furnace structure, and relates to the technical field of chain belt tunnel furnace structures, the energy-saving chain belt tunnel furnace structure comprises a furnace body, the top of the furnace body is provided with a heat cycle assembly, the heat cycle assembly comprises a first fixing plate, the bottom of the first fixing plate is fixedly connected with the top of the furnace body, and the bottom of the first fixing plate is fixedly connected with the furnace body. And one side of the first fixing plate is fixedly connected with an air heater, and one side of the air heater communicates with a circulating pipe. Through mutual cooperation of the first fixing plate, the hot-air blower, the second fixing plate, the first motor and the first fan blades, the first fixing plate and the second fixing plate can fix the hot-air blower, the situation that the hot-air blower deviates during working is avoided, the hot-air blower is started, the hot-air blower is started, and the working efficiency is improved. The hot air blower can drive the circulating pipe and the air outlet pipe to guide hot air into the furnace body, so that materials on the conveying mesh belt are conveniently dried, heat in the furnace body can return to the hot air blower again through the circulating pipe, hot air circulation is facilitated, and energy is saved.

The invention discloses a tea aroma enhancing and baking device in the technical field of tea processing, and the tea aroma enhancing and baking device comprises a baking room, a tea tray in the baking room and a stirring mechanism, heating radiators are arranged on the wall body of the baking room, the stirring mechanism comprises a rake and a ventilation pipe connected with the rake, and the device further comprises a power assembly used for driving the ventilation pipe to do linear reciprocating motion. The rake is located in the tea tray, the bottoms of rake teeth of the rake are in sliding contact with the surface of the tea tray, an air duct is arranged in the rake teeth of the rake, an air outlet communicated with the air duct is further formed in the rake teeth, a rake handle of the rake is hollow and enables the air duct to be communicated with a ventilation pipe, and the ventilation pipe is communicated with an air heater; and the tea tray is connected with a vibration mechanism. Compared with a traditional stirring mechanism, the turning and stirring mechanism in the device is softer in design. The rake teeth of the rake can reduce physical damage of the tea leaves when the tea leaves are turned, the slag crushing rate is reduced, and therefore the integrity and attractiveness of the tea leaves are kept.

The invention discloses an automatic spraying robot system for an anti-oxidation functional ceramic coating of a prebaked anode carbon block. The automatic spraying robot system comprises a dust removal chamber, a bottom spraying chamber, a flash drying chamber, a spraying chamber and a drying chamber which are sequentially connected end to end and communicate with one another through communicating openings. A feeding port is formed in the dust removal chamber, a discharging port is formed in the drying chamber, and the dust removal chamber, the bottom spraying chamber, the flash drying chamber, the spraying chamber and the drying chamber are jointly provided with a feeding assembly. A bottom spraying assembly is arranged in the bottom spraying chamber, a quick-drying spray head is arranged on the flash drying chamber in a penetrating and inlaying mode, an industrial robot is arranged in the spraying chamber, a spray nozzle is fixedly connected to the tail end of the industrial robot, and a plurality of hot air blowers are arranged on the drying chamber in a penetrating and inlaying mode. Full-dimensional dead-corner-free cleaning of the carbon blocks is achieved, stubborn dust is efficiently removed, no extra power exists, different conveying speeds are adapted, and a foundation is built for follow-up spraying.

The invention discloses a critical current nondestructive testing device for a joint-free high-temperature superconducting tape. The critical current nondestructive testing device comprises a testing tape reel, a fixing plate, a testing tape reel motor rotating shaft, an air heater, a tension sensor, a wire guide wheel, a magnetizing device, a double-hole Hall sensor, a liquid nitrogen Dewar and the joint-free high-temperature superconducting tape. The test tape reel is used for placing the joint-free high-temperature superconducting tape; the testing tape reel motor rotating shaft is used for connecting the motor and the testing tape reel, and the air heater is used for blow-drying the tape to prevent the surface of the superconducting tape from freezing. The tension sensor is used for carrying out real-time and on-line monitoring on the tension applied to the superconducting tape. The wire guide wheel is of a bearing supporting structure and comprises a built-in deep groove ball bearing or sliding bearing. And the magnetizing device is used for magnetizing the high-temperature superconducting tape. The double-hole Hall sensor can detect magnetic field distribution on the surface of the magnetized strip. The double-hole Hall sensor is provided with a double-hole structure, and the slit strip is detected through the wire passing double holes.

The invention provides a power supply coal consumption detection method and device for a coal-fired unit with a hot primary air heater. The method comprises the following steps: dividing a boundary for a heat balance system of the coal-fired unit with the hot primary air heater based on a preset rule; based on the heat balance system of the coal-fired unit after boundary division, the boiler fuel efficiency after air inlet temperature correction is determined; based on the steam turbine heat rate and the correction coefficient, the steam turbine heat rate after parameter correction is obtained; and determining the power supply coal consumption of the coal-fired unit based on the boiler fuel efficiency after the air inlet temperature correction, the steam turbine heat consumption rate after the parameter correction and the station service power consumption rate. The method can guide the detection and calculation of the power supply coal consumption of the coal-fired unit with the hot primary air heater, and provides technical reference for power plant personnel to carry out proper operation adjustment according to the data. And meanwhile, the economical efficiency of transformation of the hot primary air heater of the power plant can be evaluated, and the power plant is guided to carry out reasonable transformation evaluation and carry out reasonable parameter adjustment on the hot primary air heater.

The utility model discloses drying equipment for nuts. The drying equipment comprises a drying machine, a containing groove, an impurity removing machine, a conveying device, a controller, a detecting device and a base. The left side of the conveying device is connected with the impurity remover, and the right side of the conveying device is connected with the dryer; the top end of the impurity removing machine is connected with the containing groove. The controller is located outside the dryer; the detection device is positioned in the dryer and is connected with the controller; the dryer comprises a stirring device and a heating device; the stirring device is positioned in the dryer; the heating equipment comprises a drying lamp and an air heater; the drying lamps are uniformly distributed in the dryer; the hot-air blower is positioned below the dryer; an outlet is formed in one side of the dryer, and a sealing door matched with the outlet is arranged on one side of the dryer; according to the nut drying machine, the controller is combined with the detection device to adjust the drying temperature of the drying machine, the air heater and the drying lamp can dry nuts, the stirring device is combined to stir and turn over the nuts, the nuts can be evenly dried, the nut drying time is shortened, and the nut drying efficiency is improved.

An air heater for drying an aluminum plate comprises a hot air box body and a flame heating machine arranged at an opening in one end of the hot air box body, an air draft assembly capable of sucking away heating gas generated by the flame heating machine is arranged in the hot air box body, and the flame heating machine is arranged at the opening through a fixing plate. The flame spraying end of the flame heating machine penetrates through the fixing plate and extends into the hot air box body, an air blower is arranged on the hot air box body, the blowing end of the air blower is communicated with the interior of the hot air box body through a pipeline, the side, facing the hot air box body, of the fixing plate is covered with a windproof cover with openings in the two ends, and open holes are evenly formed in the peripheral side of the windproof cover. Flame ejected by the flame heating machine is completely located in the hot air box body, the flame ejection position of the flame heating machine is covered through the wind shielding cover, the situation that the air draft assembly influences work of the flame heating machine is avoided, meanwhile, a combustion-supporting air blower is further arranged at the flame ejection position of the flame heating machine, and therefore the flame heating machine can be used for heating the flame. Oxygen is provided for burning flames, and flameout caused by oxygen deficit is avoided.

The utility model discloses a phthalic anhydride preparation device with a preheater, which comprises an o-xylene storage tank, an o-xylene heater, a mixer, an oxidation reactor, a first phthalic anhydride catcher, a second phthalic anhydride catcher, a tail gas tower and a phthalic anhydride rectifying tower which are sequentially connected through a pipeline, a liquid adding pump is arranged between the o-xylene storage tank and the o-xylene heater; the phthalic anhydride preparation device with the preheater further comprises an air compressor and an air heater which are sequentially connected through a pipeline, the air heater is connected with the mixer through a pipeline, and the air preheater is further arranged between the air compressor and the air heater and comprises a body. A heating pipe fitting is arranged in the body, the heating pipe fitting comprises a heating pipe and spiral fins arranged around the heating pipe, by-product low-pressure steam of the oxidation reactor can be reasonably utilized by additionally arranging the air preheater, and the use amount of high-pressure steam is saved.

The full-automatic curing chamber for composite film production comprises a curing chamber body and a plurality of film winding rollers, and a plurality of first vertical supports are arranged on the inner walls of the left side and the right side of the curing chamber body. The industrial air heater is matched with the hot air booster pump to guide hot air into the blast cover through the first hot air pipe, the four-way pipe fitting, the second hot air pipe, the two-way pipe fitting and the third hot air pipe, so that the blast cover is matched with the air holes to uniformly spray the hot air into the curing chamber, uniform temperature distribution is ensured, and the curing effect is improved; the roller shafts at the two ends are arranged on the two inclined supports on the same horizontal plane, the roller shafts abut against the semi-cylindrical protrusions in a sliding mode, the limiting pulleys are inserted into the limiting open grooves and abut against the strip-shaped arc-shaped protrusions in a sliding mode, and therefore the thin film winding roller can be conveniently and rapidly transferred; and the film winding roller on the inclined bracket led out of the curing chamber is subjected to blast heat dissipation through the heat dissipation fan, so that the cured film winding roller is conveniently and quickly subjected to blast heat dissipation, and the heat dissipation effect is improved.

The utility model relates to a cold water plate evaporator with an anti-freezing function, which aims at solving the technical problems that the current drainage anti-freezing effect is not obvious and local freezing exists, and comprises an evaporator and a water inlet pipe on the evaporator, an adapter pipe sleeve is detachably installed at the upper end of the connecting pipe, an air heater is detachably installed at the upper end of the adapter pipe sleeve, a supporting plate is fixedly arranged on the inner wall of the connecting pipe, ventilation holes are formed in the plate wall of the supporting plate in a penetrating mode, and a spring telescopic assembly is detachably installed at the bottom of the supporting plate; the anti-freezing device for the evaporator pipeline has the advantages that the inner wall of the evaporator pipeline is thoroughly dried, water accumulation is avoided, and the anti-freezing effect is effectively enhanced.

The utility model discloses an efficient heat exchange air heater which comprises a box body structure, a heating structure is arranged in the box body structure, the box body structure comprises a heater with a heating rod on the upper portion, a heating box body is arranged on the heating rod in a penetrating mode, and meanwhile the heating box body is fixedly installed on the heater. A flame-retardant heat preservation film is arranged in the heating box body, the outer wall of the heating box body is wrapped with a flame-retardant heat preservation layer, the heating structure comprises a U-shaped pipe internally provided with a through hole fin plate, and one end of the U-shaped pipe penetrates through the heating box body, extends to the outer wall of the heating box body and is fixedly connected with a fan. And meanwhile, the other end of the U-shaped pipe penetrates through the heating box body and extends to the upper portion of the outer wall of the heating box body to be connected with the mounting hopper in an embedded and through mode, and a through hole cavity disc connected with the other end of the U-shaped pipe in an embedded and through mode is laid in the mounting hopper.

The invention discloses a conveying and drying mechanism of a plastic granulator and a drying method thereof.The conveying and drying mechanism of the plastic granulator comprises a drying box, a smashing box, an electromagnetic valve, smashing rollers and an air heater, the smashing box is fixedly connected to the top of the drying box, and the electromagnetic valve is fixedly connected to the joint of the drying box and the smashing box; the drying box is fixedly connected to the left side of the crushing box, the hot-air blower is fixedly connected to the left side of the drying box, the number of the crushing rollers is two, the two crushing rollers are symmetrically and rotatably connected to the interior of the crushing box, and a feeding hopper is fixedly connected to the top of the crushing box. And by replacing the sieve plate, plastic obtained after grain cutting can be conveniently screened, dust and other impurities in air can be conveniently intercepted and filtered through the filter plate, the situation that dust drifts away and influences the environment and the body health of workers is prevented, and good practicability and convenience are achieved.