CN112797756A - Rotary furnace drying system - Google Patents
Rotary furnace drying system Download PDFInfo
- Publication number
- CN112797756A CN112797756A CN202011601356.2A CN202011601356A CN112797756A CN 112797756 A CN112797756 A CN 112797756A CN 202011601356 A CN202011601356 A CN 202011601356A CN 112797756 A CN112797756 A CN 112797756A
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- Prior art keywords
- roller
- copper powder
- drying system
- rotary kiln
- filtering
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- 238000001035 drying Methods 0.000 title claims abstract description 37
- 238000001914 filtration Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 239000011261 inert gas Substances 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 23
- 238000004062 sedimentation Methods 0.000 claims description 18
- 239000006260 foam Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- 238000005187 foaming Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 9
- 201000010099 disease Diseases 0.000 abstract description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 7
- 201000008197 Laryngitis Diseases 0.000 abstract description 6
- 201000007100 Pharyngitis Diseases 0.000 abstract description 6
- 206010044302 Tracheitis Diseases 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 210000004072 lung Anatomy 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000010949 copper Substances 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
-
- 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
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
-
- 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
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
-
- 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
- F26B25/06—Chambers, containers, or receptacles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A rotary furnace drying system comprises a motor, a furnace body, an inert gas making machine and a filtering system, wherein a roller which is in transmission connection with the motor and starts to be provided with a steam port is arranged in the furnace body, and a heating device is fixed on the roller; the inert gas making machine is communicated with the roller through an air duct; the filtering system is communicated with the steam port through a pipeline; the roller is also provided with a pressure measuring device and a pressure relief device. The invention has the following advantages: the method can avoid the copper powder from accumulating and agglomerating in the drying process, and further can completely dry the copper powder until the water content is lower than 0.05 percent; in addition, the copper powder carried by steam generated in the roller can be prevented from entering air, so that the environment is prevented from being polluted, and the diseases such as pharyngitis, laryngitis, tracheitis, lung dust absorption and the like caused by the fact that an operator inhales the copper powder floating in the air are avoided.
Description
Technical Field
The invention relates to the field of mechanical devices, in particular to a rotary furnace drying system.
Background
The copper powder is widely applied to the fields of powder metallurgy, electric carbon products, electronic materials, metal coatings, chemical catalysts, filters, radiating tubes and other electromechanical parts and electronic aviation.
The electrolytic process, one of the copper powder production processes, generally requires the following steps:
s1, electrolytic purification of copper, namely, preparing crude copper (containing 99 percent of copper) into a thick plate in advance to be used as an anode, preparing pure copper into a thin sheet to be used as a cathode, and using sulfuric acid (H2 SO) as a cathode4) And copper sulfate (CuSO)4) The mixed solution of (A) and (B) serves as an electrolyte. After electrifying, the copper is dissolved into copper ions (Cu) from the anode and moves to the cathode, and the copper ions reach the cathode to obtain electrons so as to separate out pure copper at the cathode;
s2, cleaning: washing, deacidifying and saponifying the copper powder in a washing machine with deionized water for multiple times;
s3, spin-drying: conveying copper powder into a centrifugal drier in batches to remove most of water;
s4, reduction and drying: conveying the copper powder into a reduction furnace through a conveyor belt, continuously drying until the water content is lower than 0.05%, and reducing and removing oxygen in the copper powder under a hydrogen atmosphere;
s5, grading: copper powder generally agglomerates after passing through a reduction furnace, and is subjected to grading, batch packaging after being crushed.
The above step S4 has the following disadvantages:
1. copper powder is transported and conveyed in the reducing furnace through the conveyor belt, and the copper powder accumulated on the conveyor belt is static and gathered in the transporting and conveying process, so that the copper powder is easy to agglomerate due to accumulation in the drying process after being dried in the reducing furnace;
2. the agglomerated internal copper powder is not easy to dry until the water content is lower than 0.05 percent;
3. the copper powder can generate steam in the drying process in the reducing furnace, and the steam is generally directly discharged into the air; in general, a small amount of copper powder is carried in steam, and the copper powder can float in the air in a form which is difficult to be detected by human eyes after entering the air, so that the environment is polluted, and diseases such as pharyngitis, laryngitis, tracheitis, lung dust absorption and the like are easily caused after a human body inhales; the above-mentioned diseases are often encountered by the operators in the copper powder preparation plant.
Disclosure of Invention
The invention aims to provide a rotary furnace drying system which can prevent copper powder from accumulating and agglomerating in the drying process, and further can completely dry the copper powder until the water content is lower than 0.05%; in addition, the copper powder carried by steam generated in the roller can be prevented from entering air, so that the environment is prevented from being polluted, and the diseases such as pharyngitis, laryngitis, tracheitis, lung dust absorption and the like caused by the fact that an operator inhales the copper powder floating in the air are avoided.
The invention aims to realize the drying system of the rotary furnace, which comprises a motor, a furnace body, an inert gas making machine and a filtering system, wherein a roller which is in transmission connection with the motor and starts to be provided with a steam port is arranged in the furnace body, and a heating device is fixed on the roller; the inert gas making machine is communicated with the roller through an air duct; the filtering system is communicated with the steam port through a pipeline; the roller is also provided with a pressure measuring device and a pressure relief device.
In the invention, the working principle is as follows: the furnace body is used for covering the roller to be heated, so that the roller is prevented from being exposed in the air; when the device works, the motor drives the roller to rotate, and the heating device heats the roller; the inert gas manufacturing machine injects inert gas into the roller to prevent the copper powder from being oxidized; and the filtering system filters the vapor with the copper powder generated in the drying process of the copper powder in the roller.
In the present invention, the principle of use lies in: during use, copper powder to be dried is conveyed into the roller, the heating device is used for heating and drying, the inert gas manufacturing machine is used for manufacturing inert gas, the inert gas is added into the roller through the ventilating pipeline to prevent the copper powder from being oxidized, the motor drives the roller to rotate so as to prevent the copper powder from being accumulated and agglomerated in the drying process, and the copper powder can be completely dried until the water content is lower than 0.05%; the vapor carrying copper powder generated in the copper powder drying process enters a filtering system through a pipeline for filtering, so that the vapor generated in the roller is prevented from carrying the copper powder into air, the environment is prevented from being polluted, and the operator is prevented from inhaling the copper powder floating in the air to suffer from diseases such as pharyngitis, laryngitis, tracheitis, lung dust collection and the like.
Due to the adoption of the scheme, the invention has the following advantages: the method can avoid the copper powder from accumulating and agglomerating in the drying process, and further can completely dry the copper powder until the water content is lower than 0.05 percent; in addition, the copper powder carried by steam generated in the roller can be prevented from entering air, so that the environment is prevented from being polluted, and the diseases such as pharyngitis, laryngitis, tracheitis, lung dust absorption and the like caused by the fact that an operator inhales the copper powder floating in the air are avoided.
Drawings
The drawings of the invention are illustrated as follows:
fig. 1 is a schematic cross-sectional view of a copper powder vapor filtration system of the present invention.
FIG. 2 is a schematic cross-sectional view of a furnace and inert gas producer portion of the present invention.
FIG. 3 is a schematic left side view of a furnace body portion of the present invention without the motor shown.
FIG. 4 is a schematic left side view of a furnace body portion illustrating a motor according to the present invention.
In the figure: 1. a furnace body; 2. a motor; 3. a drum; 4. a heating section; 5. a cooling section; 6. a heating device; 7. a housing; 8. a screw conveyor; 9. a pendulum bob; 10. a sound insulating layer; 11. a gear I; 12. a gear II; 13. an inert gas making machine; 14. a steam port; 15. an air duct; 16. a sedimentation tank; 17. a filtration tower; 18. a spray head; 19. a foam outlet; 20. a pump; 21. a pipeline; 22. a shower head; 23. an observation window; 24. an access hole; 25. a discharge port; 26. a grid plate; 27. a steam discharging pipe; 28. a pressure measuring device; 29. a pressure relief device; 30. and a fixed segment.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 4, a rotary furnace drying system comprises a motor 2, a furnace body 1, an inert gas making machine 13 and a filtering system, wherein a roller 3 which is in transmission connection with the motor 2 and is provided with a steam port 14 is arranged in the furnace body 1, and a heating device 6 is fixed on the roller 3; the inert gas making machine is communicated with the roller 3 through an air duct 15; the filtering system is communicated with the steam port 14 through a pipeline 21; the drum 3 is also provided with a pressure measuring device 28 and a pressure relief device 29.
In the invention, the working principle is as follows: the furnace body 1 is used for covering the roller 3 to be heated, so that the roller 3 is prevented from being exposed in the air; when the device works, the motor 2 drives the roller 3 to rotate, and the heating device 6 heats the roller 3; the inert gas making machine 13 adds inert gas into the roller 3 to prevent the copper powder from being oxidized; the filtering system filters the vapor with the copper powder generated in the drying process of the copper powder in the roller 3; the pressure measuring device 28 is used to ensure a positive pressure in the drum 3, i.e. an inert gas input, and the pressure relief device 29 is used to avoid a pressure relief in the drum 3 in order to avoid an excessive pressure.
In the present invention, the principle of use lies in: during the use, in sending into cylinder 3 with the copper powder that needs drying, heating device 6 heats and dries, and inert gas making machine 13 makes inert gas and prevents that the copper powder from taking place the oxidation in adding cylinder 3 through breather pipe 15 at this in-process, thereby motor 2 drives cylinder 3 and rotates and avoid the copper powder to pile up the caking in the drying process, and then can dry the copper powder totally to water content is less than 0.05%. The vapor carrying copper powder generated in the copper powder drying process enters a filtering system through a pipeline 21 to be filtered, so that the vapor generated in the roller is prevented from carrying the copper powder into air, the environment is prevented from being polluted, and the operator is prevented from sucking the copper powder floating in the air to suffer from diseases such as pharyngitis, laryngitis, tracheitis, lung dust collection and the like.
The pressure measuring device 28 may be a U-shaped pressure measuring device or other pressure measuring device that can measure the pressure inside the drum 3, and the pressure releasing device 29 may be a manual pressure releasing valve, an electronic pressure releasing valve, a pressure releasing valve connected to a controller, or the like. In the present embodiment, since the rear end of the drum 3 is lower, the pressure measuring device 28 and the pressure relief device 29 are fixed to the rear end of the drum 3 in order to facilitate the removal, installation, replacement, observation, and use of the pressure measuring device and the pressure relief device 29.
In this embodiment, the transmission connection between the motor 2 and the roller 3 can be realized by fixing a gear i 11 at the output end of the motor 2, sleeving a gear ii 12 meshed with the gear i 11 on the roller 3, or by realizing the transmission connection between the motor 2 and the roller 3 through other transmission mechanisms.
In this embodiment, the heating device 6 is a heating wire wrapped on the outer wall of the heating section 4, and in other embodiments, the heating device 6 may also be a heating rod, a heating plate, or the like fixed on the heating section 4.
In the present embodiment, the inert gas manufacturing machine 13 is a nitrogen manufacturing machine that can manufacture nitrogen gas, and in other embodiments, the inert gas manufacturing machine 13 may also be a machine that manufactures inert gas such as helium gas to avoid oxidation of copper powder.
Further, in order to avoid that the drum 3 drives the air duct 15 and the duct 21 to rotate during the rotation process, in this embodiment, the front end of the drum 3 includes a fixed section 30, the air duct 15 is communicated with the fixed section 30, and the steam port 14 is opened on the fixed section 30.
Further, the roller 3 is arranged in a downward inclined mode, the roller 3 comprises a heating section 4 and a cooling section 5 which are sequentially arranged from front to back, the heating device 6 is fixed on the heating section 4, the outer side of the cooling section 5 is wrapped by a housing 7, and cooling water is arranged between the cooling section 5 and the housing 7. After the copper powder enters the cooling section 5, cooling water cools the cooling section 5 to reduce the temperature of the copper powder to a normal temperature for subsequent screening. During use, copper powder to be dried is sent into the heating section 4 and the roller 3, the heating device 6 is used for heating and drying, the motor 2 drives the roller 3 to rotate, so that the copper powder is prevented from being accumulated and agglomerated in the drying process, and the copper powder can be completely dried until the water content is lower than 0.05%; and the dried copper powder enters the cooling section 5 from the heating section 4 to be cooled to normal temperature and then is sent out. In this embodiment, the downward inclination of the drum 3 is provided to facilitate the transfer of the dried copper powder from the heating section 4 to the cooling section 5. In this embodiment, the fixing section 30 is fixed to the heating section 4 through a bearing and a sealing ring, so that the fixing section 30 does not rotate while the heating section 4 and the cooling section 5 rotate, and the roller 3 is prevented from driving the air duct 15 and the duct 21 to rotate in the rotation process. In other embodiments, the fixed section 30 and the heating section 4 can be connected in rotation by a sealing structure between a cylinder and a cylinder cover which rotate relatively as disclosed in the prior art CN210240549U, or a sealing device on the end face of a large-diameter rotating cylinder as disclosed in CN 2611690Y.
Further, preferably, the drum 3 is inclined downward by 3 ° to 8 °. In the present embodiment, the drum 3 is inclined downward by 5 °. In other embodiments, the drum 3 is tilted downward at other tilt angles of 3-8 °.
Further, the filtering system comprises a sedimentation tank 16, a filtering tower 17, a spray head 18, a foaming device and a steam discharge pipe 27; the filtering tower 17 is arranged in the sedimentation tank 16, the bottom of the filtering tower 17 is submerged in the liquid in the sedimentation tank 16, the spray head 18 is horizontally fixed at the middle upper part in the filtering tower 17, and the foam outlet 19 of the foaming device is fixed at the top in the filtering tower 17; the filtering tower 17 is communicated with the steam port 14 through a pipeline 21, the top of the filtering tower 17 is communicated with a steam discharge pipe 27, and a pump 20 is arranged on the steam discharge pipe 27; the outlet of the pipeline 21 in the filter tower 17 is arranged downwards and corresponds to the position of the spray head 18; the outlet of the pipe 21 is positioned above the level of the liquid in the settling tank 16.
When the filtering system is used, steam with copper powder enters the filtering tower 17 through the pipeline 21, and the spray head 18 corresponding to the outlet of the pipeline 21 sprays water to enable large-particle copper powder in the steam to fall into the sedimentation tank 16; because the copper powder in the steam contains micron-level and nanometer-level copper powder, the water sprayed by the spray head 18 cannot enable the copper powder brought in the steam to fall into the sedimentation tank 16 completely, and a foaming device at the top of the filter tower 17 is required to work to generate foam, so that the rest micron-level and nanometer-level copper powder which does not fall into the sedimentation tank 16 is adhered and settled. The steam finally introduced into the filtering tower 17 is pumped by the pump 20 and discharged through the steam discharge pipe 27. The foam is broken and disappears when meeting the water sprayed by the spray head 18 and the water in the sedimentation tank 16, so that the foaming device needs to continuously generate foam to be adhered to and settle the copper powder in the filter tower 17. The spray head 18 is horizontally fixed at the middle upper part in the filter tower 17, the outlet of the pipeline 21 in the filter tower 17 is downwards arranged and has the function corresponding to the position of the spray head 18, namely, part of copper powder falls into the sedimentation tank 16 by utilizing water sprayed by the spray head 18; secondly, foam at the outlet of the pipeline 21 is crushed, and simultaneously, the foam in the filter tower 17 is prevented from entering the pipeline 21 and even the roller 3 from the outlet of the pipeline 21. The outlet position of the pipeline 21 is higher than the liquid level in the sedimentation tank 16, so that the outlet of the liquid pipeline 21 in the sedimentation tank 16 is prevented from entering the pipeline 21 and even entering the roller 3 to influence the quality of the copper powder.
Further, a screw conveyor 8 is fixed to the rear end of the drum 3. The screw conveyor 8 is used for transferring the dried and cooled copper powder into a storage tank on a subsequent transfer trolley.
Further, the outer wall of the roller 3 is hinged with a pendulum 9. In the rotation process of the roller 3, the pendulum bob 9 falls down to knock the outer wall of the roller 3, and copper powder is placed to be bonded on the inner wall of the roller 3. In the embodiment, in order to reduce the manufacturing cost and prolong the service life of the drying system of the rotary kiln, the pendulum bob 9 is hinged on the outer wall of the heating section 4. In other embodiments, pendulum 9 may also be hinged to the outer wall of heating section 4 or/and cooling section 5.
Further, a soundproof layer 10 is provided outside the drum 3. The purpose of the acoustical barrier 10 is to reduce the noise generated during operation of the rotary kiln drying system, particularly the noise generated by the pendulum motion striking the drum 3. In the present embodiment, the soundproof layer 10 is a soundproof plate fixed to the outer wall of the housing 7 and covering the drum 3, the pendulum 9, and the housing 7. In other embodiments, the sound insulation layer 10 may be fixed on the inner wall of the furnace body 1 or fixed between the furnace body 1 and the housing 7 by other means.
Further, in the present embodiment, the material of the drum 3 is 304 stainless steel.
Further, the pipe 21 in the filter tower 17 is in an "L" shape. The function of the L-shaped pipe 21 in the filter tower 17 is to facilitate the downward arrangement of the outlet of the pipe 21 in the filter tower 17 and the installation of the pipe 21 while corresponding to the position of the spray head 18.
Further, a spray header 22 is fixed at the top of the filter tower 17. Since in practical application, the foam around the foam outlet 19 of the foaming device and the foam on the side wall of the filter tower 17 are not easy to fall, break and change during the process of continuously generating the foam in the foaming device, the top fixing of the spray header 22 in the filter tower 17 and the regular opening and closing of the spray header 22 are beneficial to cleaning the foam around the foam outlet 19 of the foaming device and the foam on the side wall of the filter tower 17. In addition, when the filter system is closed for use, the shower head 22 is opened to complete cleaning of the filter tower 17. The showerhead 22 may be turned on and off periodically by a controller or otherwise considered control.
Further, an observation window 23 is provided on the wall of the filter tower 17. The observation window 23 is used for facilitating operators to observe the conditions in the filter tower 17 at any time outside the filter tower 17, and ensuring the stability of the production process. In the present embodiment, the observation window 23 is a glass window fixed to the wall of the filter tower 17.
Further, the wall of the filter tower 17 is provided with an access opening 24. The service hole 24 is used for facilitating the maintenance of the interior of the filter tower 17 through the service hole 24 by an operator at any time.
Furthermore, a discharge port 25 is formed on the sedimentation tank 16, and the height of the discharge port 25 is lower than that of the spray head 18. The height of the discharge opening 25 is lower than that of the spray head 18 so that the spray head 18 sprays the spray water while the liquid level of the sedimentation basin 16 is lower than that of the outlet of the pipe 21.
Further, in this embodiment, a mesh plate 26 is provided in the sedimentation tank 16, and the filter tower 17 is placed on the mesh plate 26. The mesh plate 26 functions to facilitate the placement of the filter tower 17 within the settling tank 16 with the bottom communicating with the settling tank 16. The mesh plate 26 may be positioned within the settling tank 16 by welding, fastening, or transition fitting, among other means. In other embodiments, the filter tower 17 may also be suspended within the settling tank 16 by other support means.
Claims (10)
1. The utility model provides a rotary furnace drying system which characterized in that: the device comprises a motor (2), a furnace body (1), an inert gas making machine (13) and a filtering system, wherein a roller (3) which is in transmission connection with the motor (2) and starts to be provided with a steam port (14) is arranged in the furnace body (1), and a heating device (6) is fixed on the roller (3); the inert gas making machine is communicated with the roller (3) through an air duct (15); the filtering system is communicated with the steam port (14) through a pipeline (21); the roller (3) is provided with a pressure measuring device (28) and a pressure relief device (29).
2. The rotary kiln drying system of claim 1, wherein: the roller (3) is arranged in a downward inclined mode, the roller (3) comprises a heating section (4) and a cooling section (5) from front to back in sequence, a heating device (6) is fixed on the heating section (4), the cooling section (5) is wrapped by a housing (7) in the outer side, and cooling water is arranged between the cooling section (5) and the housing (7).
3. The rotary kiln drying system of claim 1 or 2, wherein: the filtering system comprises a sedimentation tank (16), a filtering tower (17), a spray head (18), a foaming device and a steam discharging pipe (27); the filtering tower (17) is arranged in the sedimentation tank (16) and the bottom of the filtering tower (17) is not in the liquid in the sedimentation tank (16), the spray head (18) is horizontally fixed at the middle upper part in the filtering tower (17), and the foam outlet (19) of the foaming device is fixed at the top in the filtering tower (17); the filtering tower (17) is communicated with the steam port (14) through a pipeline (21), the top of the filtering tower (17) is communicated with a steam discharge pipe (27), and a pump (20) is arranged on the steam discharge pipe (27); the outlet of the pipeline (21) in the filter tower (17) is arranged downwards and corresponds to the position of the spray head (18); the outlet position of the pipeline (21) is higher than the liquid level in the sedimentation tank (16).
4. The rotary kiln drying system of claim 1 or 2, wherein: a screw conveyor (8) is fixed at the rear end of the roller (3).
5. The rotary kiln drying system of claim 3, wherein: a screw conveyor (8) is fixed at the rear end of the roller (3).
6. The rotary kiln drying system of claim 1, 2 or 5, wherein: the outer wall of the roller (3) is hinged with a pendulum bob (9).
7. The rotary kiln drying system of claim 3, wherein: the outer wall of the roller (3) is hinged with a pendulum bob (9).
8. The rotary kiln drying system of claim 4, wherein: the outer wall of the roller (3) is hinged with a pendulum bob (9).
9. The rotary kiln drying system of claim 1, 2, 5, 7 or 8, wherein: a sound insulation layer (10) is arranged outside the roller (3).
10. The rotary kiln drying system of claim 3, wherein: a sound insulation layer (10) is arranged outside the roller (3).
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| GB576462A (en) * | 1943-08-11 | 1946-04-04 | Ford Motor Co | Improvements in kilns |
| CN103604280A (en) * | 2013-12-05 | 2014-02-26 | 重庆市酉阳县酉好化肥有限公司 | Anti-wall-adhering rotary-drum drying machine |
| CN205351979U (en) * | 2016-02-06 | 2016-06-29 | 浙江安特磁材有限公司 | Drying kiln |
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Application publication date: 20210514 |