CN115265119B - Precursor rotary kiln drying device with core tube design - Google Patents
Precursor rotary kiln drying device with core tube design Download PDFInfo
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- CN115265119B CN115265119B CN202210861695.7A CN202210861695A CN115265119B CN 115265119 B CN115265119 B CN 115265119B CN 202210861695 A CN202210861695 A CN 202210861695A CN 115265119 B CN115265119 B CN 115265119B
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- core tube
- inner cylinder
- shoveling
- hollow
- precursor
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- 239000002243 precursor Substances 0.000 title claims abstract description 74
- 238000001035 drying Methods 0.000 title claims abstract description 53
- 239000011229 interlayer Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000009825 accumulation Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 13
- 239000010936 titanium Substances 0.000 description 11
- 229910052719 titanium Inorganic materials 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0404—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with internal subdivision of the drum, e.g. for subdividing or recycling the material to be dried
- F26B11/0409—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with internal subdivision of the drum, e.g. for subdividing or recycling the material to be dried the subdivision consisting of a plurality of substantially radially oriented internal walls, e.g. forming multiple sector-shaped chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0445—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having conductive heating arrangements, e.g. heated drum wall
- F26B11/045—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having conductive heating arrangements, e.g. heated drum wall using heated internal elements, e.g. which move through or convey the materials to be dried
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
- F26B25/185—Spacers; Elements for supporting the goods to be dried, i.e. positioned in-between the goods to build a ventilated stack
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a precursor rotary kiln drying device with a core tube design, which comprises a kiln body, wherein the kiln body comprises an inner cylinder and an outer cylinder, an interlayer is formed between the inner cylinder and the outer cylinder, one end of the interlayer is provided with a steam inlet, and the inner wall of the inner cylinder is provided with an inner cylinder shoveling plate; the core tube assembly comprises a hollow core tube and a core tube shoveling plate, one end of the hollow core tube is plugged and fixed in the inner cylinder through a connecting tube, and the core tube shoveling plate is arranged on the outer wall of the hollow core tube. The hollow core tube is additionally arranged in the kiln body, pressure steam is introduced into the hollow core tube, the contact area between the precursor and the drying device can be further increased, the inner wall of the inner cylinder is provided with the hollow inner cylinder shoveling plate and is communicated with the interlayer, so that the heat exchange area between the steam and the inner cylinder is increased, the contact area between the precursor and the drying device is increased, and the drying efficiency is improved.
Description
Technical Field
The invention relates to the technical field of drying devices, in particular to a precursor rotary kiln drying device with a core tube design.
Background
The drying of the ternary precursor is an important part of the precursor production process, and it dries the moisture in the precursor. The water content of the precursor after press filtration is usually about 8-11%, the precursor is required to be dehydrated by a centrifugal machine, the water content is reduced to about 4%, and then the precursor is further dried by a dryer, so that the water content is reduced to below 0.4%, and the requirement of the precursor product is met. In the production process, the centrifuge can be blocked by the precursor, and dredging and cleaning are often required. If the productivity of the dryer is enough, the precursor after press filtration is scattered and then is directly dried, so that the process links can be simplified, and the maintenance and cleaning processes can be reduced.
At present, a tray type steam dryer, a hot air dryer, a rotary kiln and other devices are commonly used for drying the precursor. The rotary kiln with cylinder interlayer steam heating is preferred by a plurality of manufacturers in the field of precursor drying due to low failure rate and simple use. The drying and heating temperature of the precursor is controlled below 150 ℃ according to the process requirement, the corresponding vapor pressure is below 2 kg, otherwise, the quality of the precursor product is affected by the excessive temperature. Because the highest heating temperature is limited, the degree of material thinning and the heating area contacting the inner furnace body become key factors of the drying efficiency of the rotary kiln. When the conventional rotary kiln rotates, internal materials are gathered in a small part of the area of the inner cylinder, especially when the materials are less, the materials cannot be spread to be thin and uniformly distributed, so that the heating surface area of the materials contacting the cylinder is less, and the drying productivity is affected.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
In order to solve the technical problems, the invention provides the following technical scheme: the precursor rotary kiln drying device with the core tube design comprises a kiln body, wherein the kiln body comprises an inner cylinder and an outer cylinder, an interlayer is formed between the inner cylinder and the outer cylinder, a steam inlet is formed at one end of the interlayer, and an inner cylinder shoveling plate is arranged on the inner wall of the inner cylinder; the core tube assembly comprises a hollow core tube and a core tube shoveling plate, one end of the hollow core tube is plugged and fixed in the inner cylinder through a connecting tube, and the core tube shoveling plate is arranged on the outer wall of the hollow core tube.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: the inner cylinder shoveling plates are provided with a plurality of groups, are circumferentially and equidistantly arranged on the inner wall of the inner cylinder, are hollow, and are communicated with the interlayer.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: and a communication hole is formed at the connection position of the inner cylinder and the inner cylinder shoveling plate.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: a plurality of strip-shaped metal shoveling plates are uniformly arranged between two adjacent groups of inner cylinder shoveling plates.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: the length of the hollow core tube is smaller than that of the kiln body, one end of the hollow core tube is flush with the discharge end of the kiln body, and the plugging end is positioned in the kiln body.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: the kiln body feeding end is provided with first stock guide and second stock guide, and first stock guide tip flushes with the feeding end, and first stock guide and second stock guide are equipped with the clearance, the second stock guide with the inner tube shoveling plate is equipped with the clearance.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: the blocking end of the hollow core tube is closer to the feeding end than the inner cylinder shoveling plate, and the discharging end of the kiln body is provided with a third guide plate.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: the inner cylinder shoveling plate is a hollow rectangular pipe, and the distance between the outer end part of the core pipe shoveling plate and the axis is larger than the distance between the end part of the inner cylinder shoveling plate and the axis by times.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: the connecting pipe is a hollow pipe and is communicated with the interlayer and the inner cavity of the hollow core pipe.
As a preferred embodiment of the precursor rotary kiln drying device with core tube design of the present invention, the following is adopted: the outer side of the outer cylinder is provided with a water accumulation groove, and the water accumulation groove is provided with a water drain hole. The kiln body discharge end is also provided with an air inlet, the kiln body feed end is provided with an air outlet, flowing air enters from the air inlet, absorbs evaporated moisture in the kiln body and is heated, and finally hot air carrying evaporated moisture flows out from the air outlet.
The invention has the beneficial effects that: when the precursor materials are less, the conventional kiln body rotates, and the precursor materials can be gathered on the surface of the inner cylinder body within a smaller angle range; the invention adds the hollow core tube and the shoveling plate meeting the specific height requirement in the kiln body, and communicates the core tube with the steam in the interlayer of the kiln body, so that the precursor materials can be spread thin and uniformly distributed on the surface of the inner cylinder body, the surface of the core tube and the attached shoveling plate within the angle range of approximately 180 degrees, and the heat exchange area and the evaporation area of the materials are greatly increased. In addition, the inner wall of the inner cylinder is provided with the hollow inner cylinder shoveling plate and is communicated with the interlayer, so that the heat exchange area of steam and the inner cylinder is increased; the sufficient heating and heat exchange surface area can rapidly heat the flowing gas in the furnace body, improve the relative dryness degree of the flowing gas, and absorb the evaporated moisture more, thereby remarkably improving the drying efficiency and the drying capacity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a schematic diagram of the overall structure of the kiln body of the invention.
Fig. 3 is a schematic view of the internal structure of the kiln of the invention.
Fig. 4 is a schematic view of the core tube assembly of the present invention.
Fig. 5 is a cross-sectional view of the overall structure of the present invention.
FIG. 6 is a schematic view of the height of the inner cylinder plate-core tube plate according to the present invention.
Fig. 7 is a schematic view showing an internal structure of a kiln body in embodiment 2 of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 6, in a first embodiment of the present invention, there is provided a precursor rotary kiln drying apparatus with a core tube design, which includes a kiln body 100 and a core tube assembly 200, wherein the core tube assembly 200 is located inside the kiln body 100, for increasing the contact area between the precursor and the drying apparatus, thereby improving the drying efficiency, the kiln body 100 includes an inner cylinder 101 and an outer cylinder 102, the inner cylinder 101 and the outer cylinder 102 are hollow cylinders with different radii, the same length and overlapping axes, a hollow interlayer container is formed by two end plugs, thereby forming an interlayer M between the inner cylinder 101 and the outer cylinder 102, the interlayer M is used for storing pressure steam, one end of the interlayer M is provided with a steam inlet 103, the steam inlet 103 is connected with a steam assembly, thereby introducing steam into the interlayer M, the inner wall of the inner cylinder 101 is provided with an inner cylinder shoveling plate 104, and the inner cylinder shoveling plate 104 can enable the kiln body 100 to rotate the precursor from the lowest position of the furnace body by about 135 ° in the rotation process, and to fall down after being carried to a high position; the core tube assembly 200 comprises a hollow core tube 201 and a core tube shoveling plate 202, one end of the hollow core tube 201 is plugged and is fixed in the inner cylinder 101 through a connecting pipe 203, the core tube shoveling plate 202 is arranged on the outer wall of the hollow core tube 201, one end of the hollow core tube 201 is plugged, the other end of the hollow core tube 201 is connected with a steam assembly so as to inject steam into the inner cavity of the hollow core tube 201, the hollow core tube 201 is fixed in the inner cylinder 101 through the connecting pipe 203, and the kiln body 100 rotates to drive the core tube assembly 200 to rotate together.
Specifically, the outer diameter of the outer cylinder 102 is 1700mm, the length is 15000mm, the material is carbon steel Q235, the diameter of the inner cylinder 101 is 1500mm, the thickness is 12mm, the length is 15000mm, the material is a titanium composite plate, the thickness of the inner wall titanium is 2mm, the thickness of the outer carbon steel is 10mm, 12 groups of inner cylinder shoveling plates 104 are arranged, the material is titanium, the thickness of the titanium plates is 3mm, the circumferential equidistant arrangement is formed in the inner wall of the inner cylinder 101, and the inner cylinder shoveling plates 104 are hollow and are communicated with the interlayer M. The connection position of the inner cylinder 101 and the inner cylinder shoveling plate 104 is provided with a flow hole 101a, steam in the interlayer M flows into the inner cylinder shoveling plate 104 through the flow hole 101a, the diameter of the hollow core tube 201 is 500mm, the length is 13500mm, the core tube is made of composite titanium plates, the thickness of titanium layers is 2mm, the thickness of the composite layers is 10mm, 24 titanium core tube shoveling plates 202 with the height of 260mm and the thickness of 3mm are uniformly arranged on the outer wall of the hollow core tube 201, and the length of the core tube shoveling plates 202 is 12900mm.
In the operation of the device, steam is introduced into the interlayer M and the hollow core tube 201, so that the heating temperature of the inner wall of the inner tube 101 and the outer wall of the hollow core tube 201 is maintained, the interlayer M is communicated with the hollow inner tube shoveling plate 104 arranged on the inner wall of the inner tube 101, the steam simultaneously enters the hollow inner tube shoveling plate 104, so that the heating temperature of the inner tube shoveling plate 104 is maintained, the temperature of the hollow core tube 201 is also conducted to the titanium core tube shoveling plate 202 on the outer side of the hollow core tube, in the drying process, the precursor is concentrated on the lower half of the inner tube 101 and the upper half of the hollow core tube 201, the device rotates, when the precursor between the inner tube shoveling plate 104 on the lower half of the inner tube 101 rotates to a downward inclination angle of about 45 degrees, under the action of gravity, the precursor slides onto the hollow core tube 201 and the core tube shoveling plate 202 under the action of gravity, and after the device continuously rotates 180 degrees, the precursor on the hollow core tube 201 and the core tube shoveling plate 202 slides downwards 45 degrees, and the precursor slides onto the inner tube 101 and the inner tube shoveling plate 104.
The kiln body 100 is additionally provided with the hollow core tube 201, pressure steam is introduced into the hollow core tube, the contact area between the precursor and the drying device can be further increased, the inner wall of the inner cylinder 101 is provided with the hollow inner cylinder shoveling plate 104 and is communicated with the interlayer M, so that the heat exchange area between the steam and the inner cylinder 101 is increased, the contact area between the precursor and the drying device is increased, the drying efficiency is improved, meanwhile, the inner cylinder shoveling plate 104 arranged on the inner wall of the inner cylinder 101 is matched with the core tube shoveling plate 202 to realize the uniformity and the conveying of the precursor, the precursor is prevented from being gathered in a small part area of the inner cylinder 101, the full high-efficiency drying cannot be realized, the heat exchange part of the device adopts titanium materials in a large area, the heat exchange mode of the surface of the titanium materials and the steam is in a drop shape, the thermal resistance is reduced, the non-scaling of the titanium surface can also be reduced, and the heat exchange performance of the titanium is obviously improved.
Further, a plurality of strip-shaped metal shoveling plates 105 are uniformly arranged between two adjacent groups of inner cylinder shoveling plates 104, the height of each metal shoveling plate 105 is smaller than that of each inner cylinder shoveling plate 104, the metal shoveling plates 105 are made of titanium materials and have a thickness of 2mm, and the metal shoveling plates 105 are arranged on the adjacent inner cylinder shoveling plates 104, so that the heat exchange area of the drying device is further increased, the sufficient heating and heat exchange surface area can be achieved, flowing gas in the furnace body can be rapidly heated, the relative drying degree of the drying device is improved, the evaporated moisture can be absorbed more, the drying efficiency and the drying capacity are remarkably improved, the drying efficiency is improved, the precursor can be more uniformly distributed in the area where the inner cylinder shoveling plates 104 are arranged by the metal shoveling plates 105, and the precursor is prevented from gathering at the lower part of the inner cylinder shoveling plates 104.
Further, the length of the hollow core pipe 201 is smaller than the length of the kiln body 100, one end of the hollow core pipe 201 is flush with the discharge end of the kiln body 100, a steam inlet is formed in the center of the end, steam is injected into the hollow core pipe 201 by connecting a steam assembly, 6 groups of connecting pipes 203 are circumferentially arranged at the end of the hollow core pipe and connected with the inner cylinder 101, the other end of the hollow core pipe 201 is a plugging end, the plugging end is located inside the kiln body 100 and is 1500mm away from the feeding end, 3 connecting pipes 203 are circumferentially arranged at the end of the hollow core pipe and connected with the inner cylinder 101, the hollow core pipe 201 is not arranged in a furnace body at the feeding end, and feeding from the feeding end is facilitated. The length of the hollow core tube 201 is smaller than the length of the kiln body 100, so that precursor pre-drying and dispersing are firstly carried out in the area from the feeding end to the hollow core tube 201, so that the precursor can enter the inner cylinder shoveling plate 104 and the hollow core tube 201 in a more uniform and more dispersed state, the quantity of the precursor between the adjacent inner cylinder shoveling plates 104 is approximately the same, and the drying efficiency of the precursor is further improved.
Further, the feeding end of the kiln body 100 is provided with a first guide plate 106, 12 guide plates 106 are circumferentially arranged, the axial length is 550mm, the rear end of the first guide plate 106 is free of a 600mm long smooth surface, a second guide plate 107 is circumferentially arranged, 12 guide plates are circumferentially arranged, the axial length is 550mm, a 300mm smooth surface is further free after that, an inner barrel shoveling plate 104 is arranged, in the front part area of the feeding end, as described in the previous section, the inner barrel shoveling plate 104 and the hollow core tube 201 are not arranged, thereby pre-drying and dispersion of the precursor are carried out, the precursor can enter the inner barrel shoveling plate 104 and the hollow core tube 201 section in a more uniform and more dispersed state, a 300mm smooth surface is required to be formed between the second guide plate 107 and the inner barrel shoveling plate 104, the distance between the hollow core tube 201 and the feeding end is 1500mm, the inner barrel shoveling plate 104 and the feeding end is 2000mm, thus part of the precursor on the second guide plate 107 can fall onto the hollow core tube 201 and the inner barrel shoveling plate 202, the other part enters the first guide plate 104 and the hollow core tube 201, the other part enters the hollow core tube 201 uniformly along with the first guide plate 104 and the hollow core tube 104, and the hollow core tube 201 enters the hollow core tube 201 section, and the hollow guide plate 100 uniformly enters the hollow core tube section 100, and the hollow guide plate 100 is further, and the hollow guide plate 100 enters the hollow guide plate 100 is uniformly, and the hollow guide plate 100 is formed, and the hollow guide plate 201 and the hollow part is further enters the hollow core tube section, and the hollow core tube 201 and the hollow guide plate 100.
Further, the inner cylinder strap 104 is a hollow rectangular tube, and the distance between the outer end of the core strap 202 and the axis is greater than the distance between the end of the inner cylinder strap 104 and the axis.
The distance between the outer end of the core tube shoveling plate 202 and the axis is larger than the distance between the outer end of the inner tube shoveling plate 104 and the axis, the core tube shoveling plate 202 and the inner tube shoveling plate 104 are arranged in a staggered mode, the staggered angle is 15 degrees, when the kiln body 100 rotates, the inner tube shoveling plate 104 rotates to be inclined downwards by about 45 degrees, under the action of gravity, a precursor slides down to be received by the hollow core tube 201 and the core tube shoveling plate 202 below, the device continues to rotate, after the precursor rotates 180 degrees, the precursor on the hollow core tube 201 and the core tube shoveling plate 202 inclines downwards by 45 degrees, and the precursor slides down to the inner tube 101 and the inner tube shoveling plate 104 again, and then the precursor reciprocates in sequence.
Further, the connecting pipe 203 is a hollow pipe, and is communicated with the inner cavity of the interlayer M and the inner cavity of the hollow core pipe 201, so that steam in the interlayer M and steam in the hollow core pipe 201 can circulate mutually, the steam balance and the temperature balance of the whole device are realized, meanwhile, the quality of a precursor is prevented from being influenced by the excessively high local temperature, the drying efficiency is influenced by the excessively low local temperature, meanwhile, the hollow pipe can also realize the water circulation of the inner cavity of the hollow core pipe 201 and the interlayer M, steam is condensed into water, and accumulated water in the inner cavity of the hollow core pipe 201 can be discharged after being circulated to the interlayer M through the hollow pipe. The outer side of the outer cylinder 102 is provided with a water accumulation groove 109, two groups of water drain holes are oppositely formed in the water accumulation groove 109, the water accumulation groove 109 is 300mm away from a discharge end, the outer diameter is 1900mm, the width is 100mm, the kiln body 100 is obliquely arranged, the feed end is higher than the discharge end, firstly, the movement of a precursor in the kiln body 100 is convenient, secondly, the water accumulation in the interlayer M and the hollow core pipe 201 is convenient to discharge, the water accumulation in the hollow core pipe 201 flows into the interlayer M through the hollow pipe, the water accumulation in the interlayer M flows into the water accumulation groove 109 from the lower part, and finally the water accumulation groove 109 is discharged through the water drain holes.
Further, kiln body 100 discharge end still is provided with the air inlet, and kiln body 100 feed end is provided with the gas outlet, and the gas that flows gets into from the air inlet, and the moisture that evaporates is absorbed on one side in kiln body 100 is heated on the same side, carries the hot air that evaporates out moisture to flow from the gas outlet at last, through the flowing gas of letting in the drying space that kiln body 100 precursor is located for the precursor dry evaporation's moisture flows from the gas outlet along with flowing air, prevents kiln body 100 inside humidity too big, influences drying efficiency.
Typically, especially when there is less precursor material, the precursor material may collect on the surface of the inner cylinder 101 in a smaller angular range along with the rotation of the kiln body 100; the invention can spread the precursor materials to be thin and evenly distributed on the surface of the inner cylinder 101, the surface of the hollow core tube 201 and the auxiliary shoveling plate within the angle range of approximately 180 degrees, thereby greatly increasing the heat exchange area and the evaporation area of the materials.
Example 2
Referring to fig. 1 to 7, a second embodiment of the present invention is different from the first embodiment in that: the inner cylinder copying plate 104 is composed of a long section 104a and a cylindrical section 104b, the cylindrical section 104b is communicated with the interlayer M through the long section 104a, the radius of the cylindrical section 104b is larger than the width of the long section 104a, the interiors of the long section 104a and the cylindrical section 104b are hollow and are mutually communicated, steam in the interlayer M flows into the cylindrical section 104b through the long section 104a, the tail end of the inner cylinder copying plate 104 is arranged into a hollow cylinder shape, firstly, the inner volume of the inner cylinder copying plate 104 can be increased, so that the heat exchange area between the steam and the inner cylinder copying plate 104 is increased, secondly, the contact area between the inner cylinder copying plate 104 and a precursor can be increased, the drying efficiency is further improved, finally, part of the precursor stays on the inner cylinder copying plate 104 for a longer time, if the inner cylinder copying plate 104 is the long section 104a, and when the inner cylinder copying plate 104 rotates to the left and right of the hollow core tube 201 and the core tube 202 are inclined downwards, and part of the precursor can be still left and right left and left to be more expanded when the inner cylinder copying plate 104 rotates to the left and the hollow core tube 202 are inclined downwards, so that the inner cylinder is arranged at the tail end of the cylindrical section 104.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a precursor rotary kiln drying device with core pipe design which characterized in that: comprising the steps of (a) a step of,
the kiln body (100) comprises an inner cylinder (101) and an outer cylinder (102), an interlayer (M) is formed between the inner cylinder (101) and the outer cylinder (102), a steam inlet (103) is formed in one end of the interlayer (M), and an inner cylinder shoveling plate (104) is arranged on the inner wall of the inner cylinder (101);
the core tube assembly (200) comprises a hollow core tube (201) and a core tube shoveling plate (202), one end of the hollow core tube (201) is plugged and fixed in the inner cylinder (101) through a connecting tube (203), and the core tube shoveling plate (202) is arranged on the outer wall of the hollow core tube (201);
the inner cylinder shoveling plate (104) is a hollow rectangular pipe, and the distance between the outer end part of the core pipe shoveling plate (202) and the axis is larger than that between the end part of the inner cylinder shoveling plate (104) and the axisThe core tube shoveling plates (202) and the inner cylinder shoveling plates (104) are arranged in a staggered mode, the staggered angle is 15 degrees, the inner cylinder shoveling plates (104) are provided with a plurality of groups, the inner cylinder shoveling plates (104) are circumferentially arranged on the inner wall of the inner cylinder (101) at equal intervals, the inner part of the inner cylinder shoveling plates (104) is hollow and communicated with the interlayer (M), and a communication hole (101 a) is formed in the connecting position of the inner cylinder (101) and the inner cylinder shoveling plates (104);
the inner barrel shoveling plate (104) consists of a strip section (104 a) and a cylindrical section (104 b), the cylindrical section (104 b) is communicated with the interlayer (M) through the strip section (104 a), the radius of the cylindrical section (104 b) is larger than the width of the strip section (104 a), the strip section (104 a) and the cylindrical section (104 b) are hollow and are communicated with each other, and steam in the interlayer (M) flows into the cylindrical section (104 b) through the strip section (104 a);
the connecting pipe (203) is a hollow pipe and is communicated with the interlayer (M) and the inner cavity of the hollow core pipe (201).
2. The precursor rotary kiln drying apparatus with core tube design of claim 1, wherein: a plurality of strip-shaped metal shoveling plates (105) are uniformly arranged between two adjacent groups of the inner cylinder shoveling plates (104).
3. Precursor rotary kiln drying device with core tube design according to claim 1 or 2, characterized in that: the length of the hollow core tube (201) is smaller than that of the kiln body (100), one end of the hollow core tube (201) is flush with the discharge end of the kiln body (100), and the blocking end is positioned in the kiln body (100).
4. A precursor rotary kiln drying apparatus with core tube design as defined in claim 3, wherein: the kiln is characterized in that a first material guide plate (106) and a second material guide plate (107) are arranged at the feeding end of the kiln body (100), the end of the first material guide plate (106) is flush with the feeding end, a gap is formed between the first material guide plate (106) and the second material guide plate (107), and a gap is formed between the second material guide plate (107) and the inner barrel shoveling plate (104).
5. The precursor rotary kiln drying apparatus with core tube design of claim 4, wherein: the blocking end of the hollow core tube (201) is closer to the feeding end than the inner barrel shoveling plate (104), and a third guide plate (108) is arranged at the discharging end of the kiln body (100).
6. The precursor rotary kiln drying apparatus with core tube design of claim 5, wherein: the outer cylinder (102) is provided with a water accumulation groove (109) outside, a water drain hole is formed in the water accumulation groove (109), an air inlet is further formed in the discharge end of the kiln body (100), an air outlet is formed in the feed end of the kiln body (100), flowing air enters from the air inlet, and is heated while absorbing evaporated moisture in the kiln body (100), and finally hot air carrying the evaporated moisture flows out of the air outlet.
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| CN115717812A (en) * | 2022-11-18 | 2023-02-28 | 宝丰县洁石碳素材料有限公司 | Graphite processing automated production equipment |
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