CN115875950A - Waste heat recovery equipment and waste heat recovery method for tube bundle dryer - Google Patents
Waste heat recovery equipment and waste heat recovery method for tube bundle dryer Download PDFInfo
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- CN115875950A CN115875950A CN202211369497.5A CN202211369497A CN115875950A CN 115875950 A CN115875950 A CN 115875950A CN 202211369497 A CN202211369497 A CN 202211369497A CN 115875950 A CN115875950 A CN 115875950A
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- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention belongs to the technical field of waste heat recovery devices, in particular to a waste heat recovery device and a waste heat recovery method for a tube bundle dryer, aiming at the problems that the waste heat recovery is single, waste hot gas cannot be fully utilized, dust and impurities contained in grains are attached to the inner wall of a hot gas pipeline, and a large amount of electric energy needs to be consumed in the prior art, the invention provides the following scheme, which comprises the following steps: the device comprises a tube bundle drying machine, a heat energy conversion structure, a water storage tank, a spray tower and a drying structure, wherein the tube bundle drying machine is communicated with the heat energy conversion structure through a first heat preservation pipe, and the heat energy conversion structure is communicated with the water storage tank through a second heat preservation pipe.
Description
Technical Field
The invention relates to the technical field of waste heat recovery devices, in particular to waste heat recovery equipment and a waste heat recovery method for a tube bundle dryer.
Background
The tube bundle dryer is widely applied to modern drying technology, and is generally used for drying loose materials in the industries of grain, food, feed, chemical industry, light industry, ceramic, environmental protection and the like. The traditional tube bundle drying machine comprises a horizontal cylindrical casing, a tube bundle rotor is installed in the inner cavity of the casing, a rotor shaft is arranged at the center of the tube bundle rotor, seal heads are respectively arranged at two ends of the tube bundle rotor, the rotor shaft respectively extends out of the centers of the seal heads, air inlet adjusting air doors are respectively arranged on the two seal heads, and a tail gas outlet is formed in the top of the casing.
The utility model discloses a utility model with publication number CN205957204U relates to a waste heat recovery device of tube bank desiccator, include the husky kelong that is connected with the tail gas outlet at tube bank desiccator top, the air outlet of husky kelong is connected with the absorption tower air inlet at waste heat absorption tower middle part, the absorption tower gas vent at waste heat absorption tower top and the entry linkage of absorption tower exhaust fan, the inner chamber upper portion of waste heat absorption tower is equipped with the packing layer, the top of packing layer is equipped with the liquid distribution dish, the bottom of waste heat absorption tower is equipped with the water-collecting tray, the outlet of water-collecting tray bottom links to each other with the used heat flash tank entry at waste heat flash tank middle part, the used heat flash tank steam outlet at waste heat flash tank top links to each other with the flash steam pipe, the flash tank outlet of waste heat flash tank bottom links to each other with the entry of absorption tower circulating pump, the export of absorption tower circulating pump links to each other through the moisturizing pipe at absorption tower circulating pipe with liquid distribution dish center. The utility model discloses tube bank desiccator's waste heat recovery device can fully retrieve tube bank desiccator's tail gas and the waste heat of comdenstion water.
The technical scheme still has the following defects:
1. in the technical scheme, water can be heated only through waste heat, dust and impurities in waste hot gas are filtered, the waste heat is recovered only, and the waste hot gas cannot be fully utilized;
2. when grains such as wheat, soybean and rice are dried, dust and impurities contained in the grains flow along with waste hot gas, and then the dust and the impurities can be attached to the inner wall of a hot gas pipeline to influence the heat exchange efficiency or even cause blockage in the later waste heat recovery process;
3. when the grains are put into the dryer for drying, the dryer needs to consume a large amount of electric energy to heat the external cold air for gradually drying the grains, and then a large amount of electric energy needs to be consumed.
In order to solve the problems, the invention provides a waste heat recovery device and a waste heat recovery method for a tube bundle dryer.
Disclosure of Invention
The invention provides waste heat recovery equipment and a waste heat recovery method for a tube bundle dryer, and solves the problems that in the prior art, waste heat recovery is single, waste hot gas cannot be fully utilized, dust and impurities contained in grains are attached to the inner wall of a hot gas pipeline, and a large amount of electric energy needs to be consumed.
The invention provides the following technical scheme:
a tube bundle dryer waste heat recovery apparatus comprising: the system comprises a tube bundle dryer, a heat energy conversion structure, a water storage tank, a spray tower and a drying structure;
be linked together through first insulating tube between tube bank desiccator and the heat energy conversion structure, be linked together through the second insulating tube between heat energy conversion structure and the storage water tank, be linked together through concentrating the pipe between storage water tank and the spray column, be linked together through first back flow pipe between spray column and the drying structure, be linked together through the second back flow between drying structure and the tube bank desiccator.
In a possible design, the heat energy conversion structure comprises a preheating cylinder and supports, wherein rotating rings are integrally cast on two sides of the preheating cylinder, one sides of the two rotating rings, which are far away from each other, are rotatably connected with the supports, one inner wall of one side, which is far away from the preheating cylinder, is rotatably connected with a heat storage disc, two heat storage discs are fixedly connected with a plurality of first heating tube bundles on one side, which are close to each other, of the heat storage discs, the first heating tube bundles are annularly arranged, two heat storage discs are fixedly connected with a second heating tube bundle on one side, which is close to each other, of the heat storage discs, the bottom of the second heating tube bundle is fixedly connected with a plurality of third heating tube bundles, the second heating tube bundle is communicated with the third heating tube bundles, two ends of the first heating tube bundle and the second heating tube bundle are communicated with the heat storage discs, through cooperation of the plurality of third heating tube bundles, in the process of preheating cylinder driving grain rotation, the third heating tube bundles can increase grain contact area with the grain, uniform grain preheating is carried out by the grain, two grain preheating tubes are fixedly communicated with the supports through an air inlet pipe and an air outlet pipe, one end of the preheating tube are communicated with the preheating tube, one end of the preheating tube and one end of the second heating tube are communicated with the heat storage tube, one end of the second heating tube bundle is communicated with the heat storage tube, one end of the heat storage tube, and one end of the heat storage tube are communicated with the heat storage tube, and one end of the air outlet pipe are communicated with the second heating tube, and one end of the second heating tube are communicated with the heat storage tube, and one end of the heat storage tube are communicated with the heat storage tube.
In a possible design, heat energy conversion structure includes preheating section of thick bamboo and support, and the outer wall of preheating section of thick bamboo rotates the cover and is equipped with the ring cover, the bottom inner wall of ring cover is equipped with a plurality of collecting grooves, the bottom inner wall of ring cover is equipped with row silo, preheating section of thick bamboo's bottom is equipped with the bin outlet, preheating section of thick bamboo's outer wall is equipped with a plurality of sieves, and the sieve cooperatees with the collecting groove, and when preheating section of thick bamboo drove grain and rotates the in-process, the sieve rotates when to the position of aliging with the collecting groove, and dust, impurity that mix with in the grain can drop to the collecting groove through the filtration of sieve, tentatively filters grain, prevents to contain too much dust, impurity in the later stage grain, leads to the waste gas after the drying to take dust, impurity out and make pipe inner wall blocking up, arrange the bottom inner wall fixedly connected with inlet pipe of silo, and the bottom of inlet pipe is linked together with the feeding of desiccator, it runs through the shutoff board that is used for sealing row silo to seal in arranging the silo to slide in the silo, after preheating section of material preheating section of thick bamboo, can pass through grain guiding in trough, inlet pipe bundle desiccator and then the drying machine is saved the later stage when the drying energy.
In a possible design, drying structure includes the drying cabinet, rotate the closing plate, be equipped with a plurality ofly in the drying cabinet and carry out the air drying layer of drying to the hot-air, the air drying layer can make the asbestos gauge, activated carbon, the box that absorbs moisture, charcoal etc, the air drying layer can be in the drying cabinet with the form joint of buckle, also can be the form threaded connection through the bolt in the drying cabinet, rotate the closing plate and rotate the opening part of connection at the drying cabinet, and the outer wall that rotates the closing plate passes through the opening that the sealing strip can seal the drying cabinet, can seal the drying cabinet through rotating the closing plate, can open when the air drying layer loses drying effect and rotate the closing plate and change the air drying layer, rotate the closing plate sealed drying cabinet once more after changing equally, when preventing the drying cabinet from drying the hot-air, the air is external to spill, lead to the waste of heat energy.
In a possible design, the storage water tank includes annular heating pipe, is equipped with clean domestic water in the storage water tank, and annular heating pipe can make the healthy drinking of user after with the water heating in the storage water tank promptly, and annular heating pipe's one end extends to one side of storage water tank and is linked together with the other end of second insulating tube, and annular heating pipe's the other end extends to the opposite side of storage water tank and is linked together with concentrating the pipe.
In a possible design, one side of one of the supports is fixedly connected with a driving motor through a support plate, an output shaft of the driving motor rotates to penetrate through one of the supports and is fixedly connected with a gear, a gear ring meshed with the gear is fixedly sleeved on the outer wall of the preheating cylinder, the gear is driven by the driving motor to drive the preheating cylinder to rotate through the gear ring, and then the preheating cylinder can not only enable grains to become loose and be convenient for later preheating in the rotating process, but also can screen dust and impurities in the grains through a sieve plate.
In a possible design, the top of ring cover is equipped with the air discharge duct, be equipped with airstrainer in the air discharge duct, when first heating tube bank, second heating tube bank and third heating tube bank preheat the grain in the preheating section of thick bamboo, dust, impurity that contain in carrying the grain in the preheating section of thick bamboo pass through sieve and bin outlet entering air discharge duct, can filter dust, impurity in the waste gas through airstrainer, prevent that dust, impurity from being attached to in the pipeline in the waste gas, with the pipe blockage, the top fixedly connected with second draught fan of ring cover, and the air intake of second draught fan extends to in the air discharge duct, the fixed cover of air outlet of second draught fan is equipped with the shunt tubes, and the bottom of shunt tubes extends to in the spray column, and the second draught fan pours the waste gas after filtering in the air discharge duct into the spray column, sprays waste gas through the spray column, gets rid of dust, impurity in the waste gas, makes things convenient for the later stage to hot exhaust gas cyclic utilization.
In a possible design, one side of tube bank desiccator is equipped with the first draught fan that is linked together with the tube bank desiccator air outlet, the air outlet of first draught fan is linked together with the other end of first heat preservation pipe, can emit into first heating tube bank, second heating tube bank and third heating tube bank fast through first draught fan in the tube bank desiccator and be used for preheating grain, preheating cylinder's bottom is equipped with two backup pads, and the top of backup pad and preheating cylinder's outer wall sliding fit, one side that two backup pads are close to each other all with ring cover fixed connection, can support preheating cylinder through the backup pad, make preheating cylinder can be steady rotate, the backup pad can be fixed the ring cover simultaneously, prevent that preheating cylinder from driving the ring cover at the pivoted in-process and rotating.
In a possible design, one side of second back flow is equipped with the shunt tubes that is used for the reposition of redundant personnel, the outer wall of shunt tubes is used for controlling the valve of shunt tubes switching, the one end of shunt tubes is equipped with the disinfect box that is linked together, the sterilamp that carries out disinfection to steam is installed to the top inner wall of disinfect box, one side of disinfect box is equipped with the leading-in indoor heating pipe of steam after with disinfection, and when in winter, open the valve, the steam in the second back flow passes through the shunt tubes and gets into in the disinfect box, disinfects the disinfection to steam through sterilamp, and the steam after will disinfecting discharges into mill workshop, in the office after that, gives the staff and provides the heating installation.
The waste heat recovery method of the tube bundle dryer waste heat recovery equipment comprises the following steps:
s1, firstly, putting grain to be preheated into a preheating cylinder, then discharging hot waste gas in a tube bundle dryer into an air inlet pipe and a heat storage disc through a first heat preservation pipe by a first draught fan, starting a driving motor to drive a circular sleeve to rotate, meshing a gear with a gear ring, driving the preheating cylinder to rotate through the gear ring, driving the grain in the preheating cylinder to rotate by the rotation of the preheating cylinder, and fully contacting the grain by the first heating tube bundle, the second heating tube bundle and the third heating tube bundle as the hot waste gas in the heat storage disc enters the first heating tube bundle, the second heating tube bundle and the third heating tube bundle and the preheating cylinder drives the grain to rotate, thereby preheating the grain;
s2, preheating grains in a preheating cylinder by hot waste gas in a first heating tube bundle, a second heating tube bundle and a third heating tube bundle, then enabling the preheated grains to enter an annular heating tube through an air outlet pipe and a second heat preservation tube, heating water in a water storage tank by the hot waste gas through the annular heating tube, being capable of being used for being required by daily life of a factory and also being required by production of the factory, reducing the temperature after the hot waste gas heats the water in the water storage tank, then enabling the hot waste gas to enter a spray tower through a concentration tube, spraying the hot waste gas by the spray tower for treating dust and impurities in the hot waste gas, enabling the sprayed hot waste gas to enter a drying box through a first return tube, drying the hot waste gas through a plurality of air drying layers, and removing moisture in the hot waste gas;
s3, the dried gas still has a certain temperature, then the gas is discharged into the tube bundle dryer, the gas is heated again through the tube bundle dryer for drying the grains, and the temperature of the gas entering the tube bundle dryer is higher than that of the outside air, so that the consumed electric energy can be reduced when the tube bundle dryer is used for heating hot gas for drying;
s4, when the preheating cylinder rotates to preheat grains in the preheating cylinder, the preheating cylinder can drive the sieve plate to rotate, after the sieve plate is aligned with the collecting tank, dust and impurities in snacks fall into the collecting tank through the sieve plate, the grains are preliminarily filtered, and the situation that the dust and the impurities in the grains are attached to the inner wall of a pipeline along with the flowing of hot air when the grains are formally dried in the later period, so that the pipeline is blocked and the heat exchange efficiency is influenced is prevented;
s5, when the preheating cylinder drives the sieve plate, the discharge hole corresponds to the exhaust groove, hot waste gas enters the exhaust groove through the sieve plate, the discharge hole and the exhaust groove, the upwelled hot waste gas can be preliminarily filtered through the air filter screen, large particle impurities in the hot waste gas can be filtered, the pipeline is prevented from being blocked by the large particle impurities, and then the second draught fan discharges the hot waste gas filtered in the exhaust groove into the spray tower through the flow dividing pipe for spray treatment;
s6, after the waste heat treatment of the grains in the preheating cylinder is finished, the preheating cylinder drives the discharge opening to rotate and align with the discharge groove, the blocking plate is pulled outwards, the grains in the preheating cylinder enter the tube bundle dryer through the discharge groove and the feed pipe, and the grains are preheated, so that the energy consumption can be reduced when the tube bundle dryer dries the grains in the later period;
s7, when in winter, the valve is opened, hot air in the second backflow pipe enters the disinfection box through the shunt pipe, the hot air is sterilized and disinfected through the ultraviolet germicidal lamp, then the sterilized and disinfected hot air is discharged into a factory workshop and an office, and warm air is supplied to workers.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
According to the invention, the inner wall of one side of the preheating cylinder, which is far away from each other, is rotatably connected with the heat storage discs, one side of the two heat storage discs, which is close to each other, is fixedly connected with a plurality of first heating tube bundles, one side of the two heat storage discs, which is close to each other, is fixedly connected with a second heating tube bundle, the bottom of the second heating tube bundle is fixedly connected with a plurality of third heating tube bundles, through the matching of the plurality of third heating tube bundles, in the process that the preheating cylinder drives grains to rotate, the third heating tube bundles can increase the contact area with the grains, the grains are uniformly preheated, after the waste heat treatment of the grains in the preheating cylinder is finished, the grains in the preheating cylinder enter the tube bundle dryer, and the grains are preheated, so that the consumption of energy can be reduced when the tube bundle dryer dries the grains in the later stage, and the hot waste gas is fully utilized;
according to the invention, the outer wall of the preheating cylinder is rotatably sleeved with the annular sleeve, the inner wall of the bottom of the annular sleeve is provided with a plurality of collecting tanks, the inner wall of the bottom of the annular sleeve is provided with a discharging tank, the bottom of the preheating cylinder is provided with a discharging opening, the outer wall of the preheating cylinder is provided with a plurality of sieve plates, the sieve plates are matched with the collecting tanks, when the preheating cylinder drives grains to rotate, and the sieve plates rotate to the positions aligned with the collecting tanks, dust and impurities mixed in the grains can drop into the collecting tanks through the filtering of the sieve plates, the grains are preliminarily filtered, and the phenomenon that excessive dust and impurities are contained in the grains in the later period is prevented, so that the dried waste gas brings out the dust and the impurities and adheres to the inner wall of a pipeline to block the pipeline;
according to the invention, the top of the annular sleeve is provided with the exhaust groove, the exhaust groove is internally provided with the air filter screen, when the first heating tube bundle, the second heating tube bundle and the third heating tube bundle preheat grains in the preheating cylinder, waste gas in the preheating cylinder carries dust and impurities contained in the grains to enter the exhaust groove through the sieve plate and the discharge opening, and the dust and the impurities in the waste gas can be filtered through the air filter screen, so that the dust and the impurities in the waste gas are prevented from being attached to a pipeline and blocking the pipeline;
according to the invention, a plurality of air drying layers for drying hot air are arranged in the drying box, the rotary closing plate is rotatably connected to the opening of the drying box, the sprayed hot air enters the drying box, the air drying layers filter moisture in the hot air, and then the dried hot air flows into the tube bundle drying machine again to heat the air again for drying grains, the dried air still has a certain temperature, and the temperature of the air entering the tube bundle drying machine is higher than that of the air outside, so that the consumed electric energy can be reduced when the tube bundle drying machine is used for drying the hot air.
According to the invention, hot waste gas can be respectively utilized to preheat grains, heat domestic water, supply heat and repeatedly utilize hot gas for re-drying, so that the hot waste gas can be fully utilized, the energy consumed by subsequent grain drying can be reduced, and in addition, the grains are filtered in the preheating process, so that the pipeline blockage caused by the adhesion of dust and impurities in a pipeline along with the hot waste gas in the grain drying process is prevented.
Drawings
Fig. 1 is a schematic front view of a waste heat recovery apparatus of a tube bundle dryer according to an embodiment of the present invention;
fig. 2 is a schematic three-dimensional structural diagram of a heat energy conversion structure of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first-view three-dimensional cross-sectional structure of a preheating cylinder of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second perspective three-dimensional cross-sectional structure of a preheating cylinder of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 5 is a schematic three-dimensional structure diagram of a heat storage tray and a first heating tube bundle of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 6 is a schematic three-dimensional structural diagram of a preheating cylinder of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 7 is a schematic three-dimensional cross-sectional structural view of a circular sleeve of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 8 is a schematic three-dimensional cross-sectional structural view of a drying structure of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 9 is a schematic three-dimensional cross-sectional structural diagram of a water storage tank of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 10 is a schematic front view of a waste heat recovery apparatus of a tube bundle dryer according to a second embodiment of the present invention.
Reference numerals:
1. a tube bundle dryer; 2. a thermal energy conversion structure; 3. a water storage tank; 4. a spray tower; 5. drying the structure; 6. a support; 7. a rotating ring; 8. a preheating cylinder; 9. a heat storage plate; 10. a first heating tube bundle; 11. a second heating tube bundle; 12. a third heating tube bank; 13. an air inlet pipe; 14. an air outlet pipe; 15. a first induced draft fan; 16. a first heat-insulating tube; 17. a circular ring sleeve; 18. a sieve plate; 19. collecting tank; 20. a discharge outlet; 21. a discharge chute; 22. a plugging plate; 23. a feed pipe; 24. an exhaust groove; 25. an air filter screen; 26. a drive motor; 27. a gear; 28. a toothed ring; 29. a support plate; 30. a second induced draft fan; 31. a second insulating tube; 32. an annular heating pipe; 33. a concentration pipe; 34. a first return pipe; 35. a drying oven; 36. an air drying layer; 37. rotating the closing plate; 38. a second return pipe; 39. a shunt tube; 40. a valve; 41. a sterilizing box; 42. an ultraviolet germicidal lamp; 43. a heat supply pipe.
Detailed Description
The embodiments of the present invention will be described below with reference to the drawings.
In the description of the embodiments of the present invention, it should be noted that the terms "connected" and "mounted" are to be interpreted broadly, unless explicitly stated or limited otherwise, and may or may not be detachably connected, for example; may be directly connected or indirectly connected through an intermediate. Further, "communication" may be direct communication or indirect communication through an intermediary. The term "fixed" means that they are connected to each other and their relative positional relationship is not changed after the connection. Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout, and wherein like reference numerals refer to like elements throughout.
In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the embodiment of the present invention, "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Embodiment 1, referring to fig. 1, a tube bundle dryer waste heat recovery apparatus of the present embodiment includes: tube bank desiccator 1, heat energy conversion structure 2, storage water tank 3, spray tower 4 and drying structure 5, be linked together through first insulating tube 16 between tube bank desiccator 1 and the heat energy conversion structure 2, be linked together through second insulating tube 31 between heat energy conversion structure 2 and the storage water tank 3, be linked together through concentrating pipe 33 between storage water tank 3 and the spray tower 4, be linked together through first backflow pipe 34 between spray tower 4 and the drying structure 5, be linked together through second backflow pipe 38 between drying structure 5 and the tube bank desiccator 1, one side of tube bank desiccator 1 is equipped with the first draught fan 15 that is linked together with tube bank desiccator 1 air outlet, the air outlet of first draught fan 15 is linked together with the other end of first insulating tube 16, can discharge into first heating tube bank 10 with the hot waste gas in tube bank desiccator 1 fast through first draught fan 15, be used for preheating grain in second heating tube bank 11 and the third heating tube 12, the bottom of a section of thick bamboo 8 is equipped with two backup pads 29, and the outer wall sliding fit who preheats a section of thick bamboo 8 of thick bamboo, one side that two backup pads 29 are close to each other is all through bolt fixed connection, the backup pad is used for preheating grain preheating, it can rotate to carry out the smooth preheating section of thick bamboo 8 to carry out preheating in advance the rotation to prevent to carry out the supporting plate 17 rotation in advance, the supporting process of the supporting plate 17 in advance, the rotation of the supporting plate 17 in advance, it can carry out the rotation in advance, the rotation of a supporting process of a round-loop 17.
Referring to fig. 2, 3 and 4, the heat energy conversion structure 2 comprises a preheating cylinder 8 and a bracket 6, wherein rotating rings 7 are integrally cast on both sides of the preheating cylinder 8, the sides of the two rotating rings 7 away from each other are rotatably connected with the bracket 6, the inner walls of the sides of the preheating cylinder 8 away from each other are rotatably connected with heat storage discs 9, the sides of the two heat storage discs 9 close to each other are fixedly connected with a plurality of first heating tube bundles 10 through bolts, the plurality of first heating tube bundles 10 are annularly arranged, one side of each of the two heat storage plates 9 close to each other is fixedly connected with a second heating tube bundle 11, the bottom of the second heating tube bundle 11 is fixedly connected with a plurality of third heating tube bundles 12 through bolts, the second heating tube bundle 11 is communicated with the third heating tube bundles 12, two ends of the first heating tube bundle 10 and two ends of the second heating tube bundle 11 are communicated with the heat storage plates 9, and through the matching of the plurality of third heating tube bundles 12, in the process that the preheating cylinder 8 drives the grain to rotate, the third heating tube bundle 12 can increase the contact area with the grain to uniformly preheat the grain, an air inlet pipe 13 and an air outlet pipe 14 are respectively and fixedly penetrated in the two brackets 6, the mutually close ends of the air inlet pipe 13 and the air outlet pipe 14 rotatably penetrate through the preheating cylinder 8 and are respectively communicated with the heat storage disc 9, one end of the air inlet pipe 13 far away from the preheating cylinder 8 is communicated with a first heat preservation pipe 16, one end of the air outlet pipe 14 far away from the preheating cylinder 8 is communicated with a second heat preservation pipe 31, and the air inlet pipe 13, the air outlet pipe 14, the heat storage plate 9 and the second heating pipe bundle 11 are positioned on the same axis, and then can be in the rotatory in-process of preheating section of thick bamboo 8 first heating tube bank 10, second heating tube bank 11 and third heating tube bank 12 can be even stirring the grain in preheating section of thick bamboo 8, make the grain in preheating section of thick bamboo 8 all with be heated.
Referring to fig. 2, fig. 3 and fig. 4, heat energy conversion structure 2 includes preheating section of thick bamboo 8 and support 6, preheating section of thick bamboo 8's outer wall rotates the cover and is equipped with ring cover 17, ring cover 17's bottom inner wall is equipped with a plurality of collecting chutes 19, ring cover 17's bottom inner wall is equipped with row silo 21, preheating section of thick bamboo 8's bottom is equipped with bin outlet 20, preheating section of thick bamboo 8's outer wall is equipped with a plurality of sieves 18, and sieve 18 cooperatees with collecting chute 19, in preheating section of thick bamboo 8 drives grain rotation process, sieve 18 rotates to the position of aliging with collecting chute 19, the dust that mix with in the grain, impurity can drop to the collecting chute 19 through the filtration of sieve 18, tentatively filter the grain, prevent that too much dust is held in the later stage grain, impurity, the waste gas that leads to after the drying makes the pipeline jam at the inner wall impurity area, the bottom inner wall fixedly connected with inlet pipe 23 of arranging chute 21, and the bottom of inlet pipe 23 is linked together with the leading-in the row's of tube bank drier 1, it runs through the shutoff board 22 that is used for enclosed slot 21 to slide in the grain preheating section of discharging, and then consume the later stage drier 1, when can save the drying energy source of grain, drying machine 1.
Referring to fig. 8, the drying structure 5 includes a drying box 35 and a rotary closing plate 37, a plurality of air drying layers 36 for drying hot air are arranged in the drying box 35, the air drying layers 36 can be asbestos meshes, activated carbon, moisture absorption boxes, charcoal and the like, the air drying layers 36 can be clamped in the drying box 35 in a buckling mode, or can be in threaded connection in the drying box 35 through bolts, the rotary closing plate 37 is rotatably connected to an opening of the drying box 35, the outer wall of the rotary closing plate 37 can seal the opening of the drying box 35 through a sealing strip, the drying box 35 can be sealed through the rotary closing plate 37, when the air drying layer 36 loses drying effect, the rotary closing plate 37 can be opened to replace the air drying layer 36, the drying box 35 is sealed again through the rotary closing plate 37 after replacement, when the drying box 35 dries the hot air, the air is overflowed from the outside, heat energy is wasted, hot air after the rotary closing plate 37 sprays enters the drying box 35, the hot air drying layer 36 filters the hot air, and then the hot air gushes into the drying machine 1 to heat the hot air again, and the air is used for heating the grain, and the air in the drying machine, and the air can still reduce the temperature of the hot air in the drying machine, and the air, therefore, the hot air in the drying machine, and the air can reduce the temperature of the drying machine 1.
Referring to fig. 9, the water storage tank 3 includes an annular heating pipe 32, clean domestic water is provided in the water storage tank 3, that is, the annular heating pipe 32 heats the water in the water storage tank 3 to enable the user to drink healthily, one end of the annular heating pipe 32 extends to one side of the water storage tank 3 and is communicated with the other end of the second heat preservation pipe 31, and the other end of the annular heating pipe 32 extends to the other side of the water storage tank 3 and is communicated with a concentration pipe 33.
Referring to fig. 3, one side of one of the supports 6 is fixedly connected with a driving motor 26 through a support plate, an output shaft of the driving motor 26 rotates to penetrate through one of the supports 6 and is fixedly connected with a gear 27, a gear ring 28 meshed with the gear 27 is fixedly sleeved on the outer wall of the preheating cylinder 8, the gear 27 is driven by the driving motor 26, the gear 27 drives the preheating cylinder 8 to rotate through the gear ring 28, and then the preheating cylinder 8 can not only enable grains to become loose in the rotating process and be convenient for later preheating, but also can screen dust and impurities in the grains through the sieve plate 18.
Referring to fig. 1 and 2, the top of the circular sleeve 17 is provided with an exhaust duct 24, an air filter screen 25 is arranged in the exhaust duct 24, when the first heating tube bundle 10, the second heating tube bundle 11 and the third heating tube bundle 12 preheat grains in the preheating cylinder 8, waste gas in the preheating cylinder 8 carries dust contained in the grains, impurities enter the exhaust duct 24 through the sieve plate 18 and the discharge port 20, the dust in the waste gas can be filtered through the air filter screen 25, the impurities are filtered, the dust in the waste gas is prevented, the impurities are attached to the pipeline, the pipeline is blocked, the top of the circular sleeve 17 is fixedly connected with a second induced draft fan 30, an air inlet of the second induced draft fan 30 extends into the exhaust duct 24, an air outlet fixing sleeve of the second induced draft fan 30 is provided with a shunt pipe 39, the bottom end of the shunt pipe 39 extends into the spray tower 4, the second induced draft fan 30 pours the filtered waste gas in the exhaust duct 24 into the spray tower 4, the waste gas is sprayed through the spray tower 4, the dust in the waste gas is removed, and the impurities are conveniently recycled by the hot waste gas in the later stage.
Embodiment 2, referring to fig. 1, a tube bundle dryer waste heat recovery apparatus of the embodiment includes: tube bank desiccator 1, heat energy conversion structure 2, storage water tank 3, spray tower 4 and drying structure 5, be linked together through first insulating tube 16 between tube bank desiccator 1 and the heat energy conversion structure 2, be linked together through second insulating tube 31 between heat energy conversion structure 2 and the storage water tank 3, be linked together through concentrating pipe 33 between storage water tank 3 and the spray tower 4, be linked together through first backflow pipe 34 between spray tower 4 and the drying structure 5, be linked together through second backflow pipe 38 between drying structure 5 and the tube bank desiccator 1, one side of tube bank desiccator 1 is equipped with the first draught fan 15 that is linked together with tube bank desiccator 1 air outlet, the air outlet of first draught fan 15 is linked together with the other end of first insulating tube 16, can discharge into first heating tube bank 10 with the hot waste gas in tube bank desiccator 1 fast through first draught fan 15, be used for preheating grain in second heating tube bank 11 and the third heating tube 12, the bottom of a section of thick bamboo 8 is equipped with two backup pads 29, and the outer wall sliding fit who preheats a section of thick bamboo 8 of thick bamboo, one side that two backup pads 29 are close to each other is all through bolt fixed connection, the backup pad is used for preheating grain preheating, it can rotate to carry out the smooth preheating section of thick bamboo 8 to carry out preheating in advance the rotation to prevent to carry out the supporting plate 17 rotation in advance, the supporting process of the supporting plate 17 in advance, the rotation of the supporting plate 17 in advance, it can carry out the rotation in advance, the rotation of a supporting process of a round-loop 17.
Referring to fig. 2, 3 and 4, the heat energy conversion structure 2 comprises a preheating cylinder 8 and a bracket 6, wherein rotating rings 7 are integrally cast on both sides of the preheating cylinder 8, the sides of the two rotating rings 7 away from each other are rotatably connected with the bracket 6, the inner walls of the sides of the preheating cylinder 8 away from each other are rotatably connected with heat storage discs 9, the sides of the two heat storage discs 9 close to each other are fixedly connected with a plurality of first heating tube bundles 10 through bolts, and a plurality of first heating tube bundles 10 are annularly arranged, one side of each of two heat storage disks 9 close to each other is fixedly connected with a second heating tube bundle 11, the bottom of the second heating tube bundle 11 is fixedly connected with a plurality of third heating tube bundles 12 through bolts, the second heating tube bundle 11 is communicated with the third heating tube bundles 12, both ends of the first heating tube bundle 10 and the second heating tube bundle 11 are communicated with the heat storage disks 9, through the matching of the plurality of third heating tube bundles 12, in the process that the preheating cylinder 8 drives the grains to rotate, the contact area between the third heating tube bundle 12 and the grains can be increased, the grains are uniformly preheated, an air inlet pipe 13 and an air outlet pipe 14 are respectively fixed in the two supports 6 in a penetrating manner, one ends of the air inlet pipe 13 and the air outlet pipe 14, which are close to each other, rotatably penetrate through the preheating cylinder 8 and are respectively communicated with the heat storage disc 9, one end of the air inlet pipe 13, which is far away from the preheating cylinder 8, is communicated with a first heat preservation pipe 16, one end of the air outlet pipe 14, which is far away from the preheating cylinder 8, is communicated with a second heat preservation pipe 31, and the air inlet pipe 13, the air outlet pipe 14, the heat storage plate 9 and the second heating pipe bundle 11 are positioned on the same axis, and then can be in the rotatory in-process of preheating section of thick bamboo 8 first heating tube bank 10, second heating tube bank 11 and third heating tube bank 12 can be even stirring the grain in preheating section of thick bamboo 8, make the grain in preheating section of thick bamboo 8 all with be heated.
Referring to fig. 2, fig. 3 and fig. 4, heat energy conversion structure 2 includes preheating section of thick bamboo 8 and support 6, preheating section of thick bamboo 8's outer wall rotates the cover and is equipped with ring cover 17, ring cover 17's bottom inner wall is equipped with a plurality of collecting chutes 19, ring cover 17's bottom inner wall is equipped with row silo 21, preheating section of thick bamboo 8's bottom is equipped with bin outlet 20, preheating section of thick bamboo 8's outer wall is equipped with a plurality of sieves 18, and sieve 18 cooperatees with collecting chute 19, in preheating section of thick bamboo 8 drives grain rotation process, sieve 18 rotates to the position of aliging with collecting chute 19, the dust that mix with in the grain, impurity can drop to the collecting chute 19 through the filtration of sieve 18, tentatively filter the grain, prevent that too much dust is held in the later stage grain, impurity, the waste gas that leads to after the drying makes the pipeline jam at the inner wall impurity area, the bottom inner wall fixedly connected with inlet pipe 23 of arranging chute 21, and the bottom of inlet pipe 23 is linked together with the leading-in the row's of tube bank drier 1, it runs through the shutoff board 22 that is used for enclosed slot 21 to slide in the grain preheating section of discharging, and then consume the later stage drier 1, when can save the drying energy source of grain, drying machine 1.
Referring to fig. 8, the drying structure 5 includes a drying oven 35 and a rotary closing plate 37, a plurality of air drying layers 36 for drying hot air are arranged in the drying oven 35, the air drying layers 36 can be asbestos mesh, activated carbon, a moisture absorption box, charcoal and the like, the air drying layers 36 can be clamped in the drying oven 35 in a buckling mode, or can be in threaded connection in the drying oven 35 through bolts, the rotary closing plate 37 is rotatably connected to an opening of the drying oven 35, and the outer wall of the rotary closing plate 37 can seal the opening of the drying oven 35 through a sealing strip, the drying oven 35 can be sealed through the rotary closing plate 37, when the air drying layers 36 lose drying effects, the rotary closing plate 37 can be opened to replace the air drying layers 36, the drying oven 35 is sealed again through the rotary closing plate 37 after replacement, when the drying oven 35 dries the hot air, the air is overflowed from the outside, which causes heat energy waste, after the hot air sprayed by the rotary closing plate 37 enters the drying oven 35, the hot air drying layer 36 filters the hot air, and then the hot air enters the drying tube bundle 1 and is used for heating the air for drying the grain, therefore, the hot air enters the drying tube bundle after the drying machine, the drying tube bundle, and the hot air bundle, the hot air enters the drying tube bundle 1, and the drying machine, and the hot air bundle, therefore, the hot air bundle can reduce the temperature of the hot air bundle temperature of the drying machine 1.
Referring to fig. 9, the water storage tank 3 includes an annular heating pipe 32, clean domestic water is provided in the water storage tank 3, that is, the water in the water storage tank 3 is heated by the annular heating pipe 32 to be drunk healthily by a user, one end of the annular heating pipe 32 extends to one side of the water storage tank 3 and is communicated with the other end of the second heat preservation pipe 31, and the other end of the annular heating pipe 32 extends to the other side of the water storage tank 3 and is communicated with a concentration pipe 33.
Referring to fig. 3, one side of one of the supports 6 is fixedly connected with a driving motor 26 through a support plate, an output shaft of the driving motor 26 rotates to penetrate through one of the supports 6 and is fixedly connected with a gear 27, a gear ring 28 meshed with the gear 27 is fixedly sleeved on the outer wall of the preheating cylinder 8, the gear 27 is driven by the driving motor 26, the gear 27 drives the preheating cylinder 8 to rotate through the gear ring 28, and then the preheating cylinder 8 can not only enable grains to become loose in the rotating process and be convenient for later preheating, but also can screen dust and impurities in the grains through the sieve plate 18.
Referring to fig. 1 and 2, the top of the circular sleeve 17 is provided with an exhaust duct 24, an air filter screen 25 is arranged in the exhaust duct 24, when the first heating tube bundle 10, the second heating tube bundle 11 and the third heating tube bundle 12 preheat grains in the preheating cylinder 8, waste gas in the preheating cylinder 8 carries dust contained in the grains, impurities enter the exhaust duct 24 through the sieve plate 18 and the discharge port 20, the dust in the waste gas can be filtered through the air filter screen 25, the impurities are filtered, the dust in the waste gas is prevented, the impurities are attached to the pipeline, the pipeline is blocked, the top of the circular sleeve 17 is fixedly connected with a second induced draft fan 30, an air inlet of the second induced draft fan 30 extends into the exhaust duct 24, an air outlet fixing sleeve of the second induced draft fan 30 is provided with a shunt pipe 39, the bottom end of the shunt pipe 39 extends into the spray tower 4, the second induced draft fan 30 pours the filtered waste gas in the exhaust duct 24 into the spray tower 4, the waste gas is sprayed through the spray tower 4, the dust in the waste gas is removed, and the impurities are conveniently recycled by the hot waste gas in the later stage.
Referring to fig. 10, a shunt pipe 39 for shunting is disposed on one side of the second return pipe 38, a valve 40 for controlling the on-off of the shunt pipe 39 is disposed on an outer wall of the shunt pipe 39, a sterilization box 41 communicated with one another is disposed at one end of the shunt pipe 39, an ultraviolet germicidal lamp 42 for sterilizing hot air is mounted on an inner wall of a top of the sterilization box 41, a heat supply pipe 43 for guiding the sterilized hot air into a room is disposed on one side of the sterilization box 41, when the valve 40 is opened in winter, the hot air in the second return pipe 38 enters the sterilization box 41 through the shunt pipe 39, the hot air is sterilized and disinfected by the ultraviolet germicidal lamp 42, and then the sterilized hot air is discharged into a factory workshop or an office to provide warm air for workers.
A waste heat recovery method of a tube bundle dryer waste heat recovery device comprises the following steps:
s1, firstly, putting grains to be preheated into a preheating cylinder 8, then, discharging hot waste gas in a tube bundle dryer 1 into an air inlet pipe 13 and a heat storage disc 9 through a first heat preservation pipe 16 by a first induced draft fan 15, starting a driving motor 26 to drive a circular ring sleeve 17 to rotate, meshing a gear 27 with a toothed ring 28, driving the preheating cylinder 8 to rotate by the gear 27 through the toothed ring 28, driving the grains in the preheating cylinder 8 to rotate by the rotation of the preheating cylinder 8, and fully contacting the grains by the first heating tube 10, the second heating tube 11 and a third heating tube 12 along with the rotation of the grains driven by the preheating cylinder 8 as the hot waste gas in the heat storage disc 9 enters the first heating tube 10, the second heating tube 11 and the third heating tube 12 so as to preheat the grains;
s2, preheating grains in a preheating cylinder 8 by hot waste gas in a first heating tube bundle 10, a second heating tube bundle 11 and a third heating tube bundle 12, then entering an annular heating tube 32 through an air outlet tube 14 and a second heat preservation tube 31, heating the water in a water storage tank 3 by the hot waste gas through the annular heating tube 32, being capable of being used for daily life of a factory and also being used for production of the factory, heating the water in the water storage tank 3 by the hot waste gas, reducing the temperature, then entering a spray tower 4 by the hot waste gas through a concentration tube 33, carrying out spray treatment on the hot waste gas by the spray tower 4 for treating dust and impurities in the hot waste gas, entering a drying box 35 by the sprayed hot waste gas through a first return tube 34, and drying the hot waste gas through a plurality of air drying layers 36 to remove moisture in the hot waste gas;
s3, the dried gas still has a certain temperature, then the gas is discharged into the tube bundle dryer 1, the gas is heated again through the tube bundle dryer 1 for drying the grains, and the temperature of the gas entering the tube bundle dryer 1 is higher than that of the outside air, so that the consumed electric energy can be reduced when the tube bundle dryer 1 heats hot gas for drying operation;
s4, when the preheating cylinder 8 rotates to preheat grains in the preheating cylinder 8, the preheating cylinder 8 can drive the sieve plate 18 to rotate, after the sieve plate 18 is aligned with the collecting tank 19, dust and impurities in snacks fall into the collecting tank 19 through the sieve plate 18, the grains are preliminarily filtered, and the situation that the dust and the impurities in the grains are attached to the inner wall of a pipeline along with the flowing of hot air when the grains are formally dried in the later period is prevented, so that the pipeline is blocked and the heat exchange efficiency is influenced;
s5, when the preheating cylinder 8 drives the sieve plate 18 and the discharge port 20 to correspond to the exhaust groove 24, hot waste gas enters the exhaust groove 24 through the sieve plate 18, the discharge port 20 and the exhaust groove 24, upwelled hot waste gas can be preliminarily filtered through the air filter screen 25, large particle impurities in the hot waste gas can be filtered, the pipeline is prevented from being blocked by the large particle impurities, and then the second induced draft fan 30 discharges the hot waste gas filtered in the exhaust groove 24 into the spray tower 4 through the shunt pipe 39 for spray treatment through the second induced draft fan 30;
s6, after the waste heat treatment of the grains in the preheating cylinder 8 is finished, the preheating cylinder 8 drives the discharge opening 20 to rotate and align with the discharge groove 21, the blocking plate 22 is pulled outwards, the grains in the preheating cylinder 8 enter the tube bundle dryer 1 through the discharge groove 21 and the feed pipe 23, and the grains are preheated, so that the energy consumption can be reduced when the tube bundle dryer 1 dries the grains in the later period;
s7, in winter, a valve 40 is opened, hot air in the second return pipe 38 enters a disinfection box 41 through a shunt pipe 39, the hot air is disinfected and disinfected through an ultraviolet germicidal lamp 42, and then the disinfected and disinfected hot air is discharged into a factory workshop and an office to provide warm air for workers.
However, as is well known to those skilled in the art, the working principles and wiring methods of the tube bundle dryer 1, the first induced draft fan 15, the driving motor 26, the second induced draft fan 30 and the ultraviolet germicidal lamp 42 are common and are conventional means or common knowledge, and will not be described herein again, and those skilled in the art can make any choice according to their needs or convenience.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention; the embodiments of the invention and the features of the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A tube bundle dryer waste heat recovery apparatus, comprising:
the system comprises a tube bundle dryer (1), a heat energy conversion structure (2), a water storage tank (3), a spray tower (4) and a drying structure (5);
the tube bundle dryer (1) is communicated with the heat energy conversion structure (2) through a first heat preservation pipe (16), the heat energy conversion structure (2) is communicated with the water storage tank (3) through a second heat preservation pipe (31), the water storage tank (3) is communicated with the spray tower (4) through a concentration pipe (33), the spray tower (4) is communicated with the drying structure (5) through a first return pipe (34), and the drying structure (5) is communicated with the tube bundle dryer (1) through a second return pipe (38).
2. The waste heat recovery equipment for the tube bundle drying machine according to claim 1, wherein the heat energy conversion structure (2) comprises a preheating cylinder (8) and a support (6), rotating rings (7) are integrally cast on two sides of the preheating cylinder (8), one sides of the two rotating rings (7) far away from each other are rotatably connected with the support (6), the inner wall of one side of the preheating cylinder (8) far away from each other is rotatably connected with a heat storage disc (9), the two sides of the heat storage disc (9) close to each other are fixedly connected with a plurality of first heating tube bundles (10), the two sides of the heat storage disc (9) close to each other are fixedly connected with a second heating tube bundle (11), the bottom of the second heating tube bundle (11) is fixedly connected with a plurality of third heating tube bundles (12), the second heating tube bundle (11) is communicated with the third heating tube bundles (12), two ends of the first heating tube bundle (10) and the second heating tube bundle (11) are communicated with the heat storage disc (9), one ends of the first heating tube bundle (10) and the second heating tube bundle (11) are respectively communicated with the heat storage disc (9), one end of the air inlet pipe (13) and one end of the air outlet pipe (14) are respectively communicated with the preheating tube (13) and one end of the preheating cylinder (8), one end of the preheating cylinder (14) are communicated with the air outlet pipe (13), one end of the preheating cylinder (8) and one end of the preheating cylinder (13) are communicated with the preheating cylinder (8), one end of the air outlet pipe (14) far away from the preheating cylinder (8) is communicated with the second heat preservation pipe (31).
3. The waste heat recovery equipment for the tube bundle drying machine according to claim 1, wherein the heat energy conversion structure (2) comprises a preheating cylinder (8) and a support (6), the outer wall of the preheating cylinder (8) is rotatably sleeved with a circular ring sleeve (17), the bottom inner wall of the circular ring sleeve (17) is provided with a plurality of collecting grooves (19), the bottom inner wall of the circular ring sleeve (17) is provided with a discharging groove (21), the bottom of the preheating cylinder (8) is provided with a discharging opening (20), the outer wall of the preheating cylinder (8) is provided with a plurality of sieve plates (18), the sieve plates (18) are matched with the collecting grooves (19), the bottom inner wall of the discharging groove (21) is fixedly connected with a feeding pipe (23), the bottom end of the feeding pipe (23) is communicated with the feeding of the tube bundle drying machine (1), and a blocking plate (22) for sealing the discharging groove (21) penetrates through the discharging groove (21) in the discharging groove (21).
4. The tube bundle dryer waste heat recovery device according to claim 1, wherein the drying structure (5) comprises a drying box (35) and a rotary closing plate (37), a plurality of air drying layers (36) for drying hot air are arranged in the drying box (35), and the rotary closing plate (37) is rotatably connected to an opening of the drying box (35).
5. The tube bundle dryer waste heat recovery apparatus according to claim 1, wherein the water storage tank (3) comprises an annular heating tube (32), one end of the annular heating tube (32) extends to one side of the water storage tank (3) and is communicated with the other end of the second heat preservation pipe (31), and the other end of the annular heating tube (32) extends to the other side of the water storage tank (3) and is communicated with the concentration pipe (33).
6. The waste heat recovery device of the tube bundle dryer as claimed in claim 2, wherein a driving motor (26) is fixedly connected to one side of one of the brackets (6) through a support plate, an output shaft of the driving motor (26) rotatably penetrates through one of the brackets (6) and is fixedly connected with a gear (27), and a gear ring (28) meshed with the gear (27) is fixedly sleeved on the outer wall of the preheating cylinder (8).
7. The tube bundle dryer waste heat recovery device according to claim 3, wherein an exhaust duct (24) is arranged at the top of the circular ring sleeve (17), an air filtering net (25) is arranged in the exhaust duct (24), a second induced draft fan (30) is fixedly connected to the top of the circular ring sleeve (17), an air inlet of the second induced draft fan (30) extends into the exhaust duct (24), a shunt pipe (39) is arranged at an air outlet of the second induced draft fan (30) in a fixed sleeved mode, and the bottom end of the shunt pipe (39) extends into the spray tower (4).
8. The tube bundle dryer waste heat recovery device according to claim 1, wherein a first induced draft fan (15) communicated with an air outlet of the tube bundle dryer (1) is arranged on one side of the tube bundle dryer (1), the air outlet of the first induced draft fan (15) is communicated with the other end of the first heat preservation tube (16), two support plates (29) are arranged at the bottom of the preheating cylinder (8), the top of each support plate (29) is in sliding fit with the outer wall of the preheating cylinder (8), and one side, close to each other, of the two support plates (29) is fixedly connected with the annular sleeve (17).
9. The waste heat recovery device of the tube bundle drying machine as claimed in claim 1, wherein one side of the second return pipe (38) is provided with a shunt tube (39) for shunting, the outer wall of the shunt tube (39) is used for controlling a valve (40) for opening and closing the shunt tube (39), one end of the shunt tube (39) is provided with a sterilizing box (41) communicated with each other, an ultraviolet sterilizing lamp (42) for sterilizing hot air is mounted on the inner wall of the top of the sterilizing box (41), and one side of the sterilizing box (41) is provided with a heating pipe (43) for guiding the sterilized hot air into a room.
10. The waste heat recovery method of the tube bundle dryer according to any one of claims 1 to 9, comprising the steps of:
s1, firstly, grain to be preheated is put into a preheating cylinder (8), then a first induced draft fan (15) discharges hot waste gas in a tube bundle dryer (1) into an air inlet pipe (13) and a heat storage disc (9) through a first heat preservation pipe (16), a driving motor (26) is started to drive a ring sleeve (17) to rotate, a gear (27) is meshed with a toothed ring (28), the gear (27) drives the preheating cylinder (8) to rotate through the toothed ring (28), the preheating cylinder (8) can drive the grain in the preheating cylinder (8) to rotate through rotation, and the first heating tube bundle (10), the second heating tube bundle (11) and the third heating tube bundle (12) can fully contact with the grain as the hot waste gas in the heat storage disc (9) enters the first heating tube bundle (10), the second heating tube bundle (11) and the third heating tube bundle (12) and can preheat the grain;
s2, preheating grains in a preheating cylinder (8) by hot waste gas in a first heating tube bank (10), a second heating tube bank (11) and a third heating tube bank (12), then entering an annular heating tube (32) through an air outlet pipe (14) and a second heat preservation pipe (31), heating water in a water storage tank (3) by the hot waste gas through the annular heating tube (32), being capable of being used for daily life of a factory and also being used for production of the factory, reducing the temperature after the hot waste gas heats the water in the water storage tank (3), then entering the hot waste gas into a spray tower (4) through a concentration pipe (33), spraying the hot waste gas by the spray tower (4) for treating dust and impurities in the hot waste gas, entering the sprayed hot waste gas into a drying box (35) through a first return pipe (34), drying the hot waste gas through a plurality of air drying layers (36), and removing moisture in the hot waste gas;
s3, the dried gas still has a certain temperature, then the gas is discharged into the tube bundle dryer (1), the gas is heated again through the tube bundle dryer (1) to dry the grains, and the temperature of the gas entering the tube bundle dryer (1) is higher than that of the outside air, so that the consumed electric energy can be reduced when the tube bundle dryer (1) heats hot gas to dry;
s4, when the preheating cylinder (8) rotates to preheat grains in the preheating cylinder (8), the preheating cylinder (8) can drive the sieve plate (18) to rotate, after the sieve plate (18) is aligned with the collecting tank (19), dust and impurities in snacks fall into the collecting tank (19) through the sieve plate (18), grains are preliminarily filtered, and the dust and the impurities in the grains are prevented from adhering to the inner wall of a pipeline along with the flow of hot air when the grains are formally dried in the later period, so that the pipeline is blocked and the heat exchange efficiency is influenced;
s5, in addition, when the preheating cylinder (8) drives the sieve plate (18), the discharge hole (20) corresponds to the exhaust groove (24), hot waste gas enters the exhaust groove (24) through the sieve plate (18), the discharge hole (20) and the exhaust groove (24), the upwelled hot waste gas can be preliminarily filtered through the air filter screen (25), large-particle impurities in the hot waste gas can be filtered, the pipeline is prevented from being blocked by the large-particle impurities, then the second induced draft fan (30) is used, and the hot waste gas filtered in the exhaust groove (24) is discharged into the spray tower (4) through the shunt pipe (39) by the second induced draft fan (30) for spray treatment;
s6, after the grain waste heat treatment in the preheating cylinder (8) is finished, the preheating cylinder (8) drives the discharge port (20) to rotate and align with the discharge groove (21), the blocking plate (22) is pulled outwards, the grain in the preheating cylinder (8) enters the tube bundle dryer (1) through the discharge groove (21) and the feed pipe (23), and the grain is preheated, so that the energy consumption can be reduced when the tube bundle dryer (1) dries the grain in the later period;
s7, in winter, a valve (40) is opened, hot air in the second return pipe (38) enters a disinfection box (41) through a shunt pipe (39), the hot air is disinfected and disinfected through an ultraviolet germicidal lamp (42), and then the disinfected and disinfected hot air is discharged into a factory workshop and an office to provide warm air for workers.
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| CN117588914A (en) * | 2024-01-18 | 2024-02-23 | 淄博万华机械设备有限公司 | Drying and dedusting equipment with recovery device and drying and dedusting method |
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