CN113701452A - High-efficiency energy-saving mud material drying equipment - Google Patents
High-efficiency energy-saving mud material drying equipment Download PDFInfo
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- CN113701452A CN113701452A CN202111062773.9A CN202111062773A CN113701452A CN 113701452 A CN113701452 A CN 113701452A CN 202111062773 A CN202111062773 A CN 202111062773A CN 113701452 A CN113701452 A CN 113701452A
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- 238000001035 drying Methods 0.000 title claims abstract description 151
- 239000000463 material Substances 0.000 title claims description 28
- 238000012216 screening Methods 0.000 claims abstract description 24
- 238000011084 recovery Methods 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 12
- 239000010802 sludge Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 238000001694 spray drying Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 241001408630 Chloroclystis Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
- F26B1/005—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids by means of disintegrating, e.g. crushing, shredding, milling the materials to be dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
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- 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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- 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
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to the technical field of ceramic powder preparation, in particular to high-efficiency energy-saving mud drying equipment; the drying device comprises a plurality of drying units which are sequentially stacked from bottom to top, wherein each drying unit comprises a box body, a screening and crushing device and a plurality of conveying belts, and the conveying belts are sequentially arranged in the box body from top to bottom; the screening and crushing device comprises a screening mechanism and a crushing mechanism; the screening mechanism comprises a screen which is obliquely arranged, and the mud on the screen slides into the crushing bin through the upper surface of the screen, is crushed by crushing rods and then falls into the feeding end of the conveying belt positioned at the uppermost layer of the drying unit; the drying time of the small pieces of pug is reduced by arranging a screening and crushing device in each drying unit, so that the water content of the small pieces of pug is prevented from being too low, and the drying efficiency is improved; and the large-block pug is pre-crushed, so that the particle size of the large-block pug is reduced, the specific surface area of the large-block pug is increased, the drying speed of the ceramic pug is improved, and the drying cost is saved.
Description
Technical Field
The invention relates to the technical field of ceramic powder preparation, in particular to high-efficiency energy-saving mud drying equipment.
Background
The ceramic industry is a high-energy-consumption and high-pollution industry. The spray drying tower used for preparing powder in the production is the main equipment for heat energy consumption and conversion, and the energy consumption of the spray drying tower accounts for more than 35 percent of the total production cost.
The traditional ceramic powder production process is that ceramic slurry with 30-40% water content is pressurized by a plunger pump and atomized by a spray gun meeting the aperture requirement and sprayed into a spray drying tower, meanwhile, high-temperature hot air (800-1050 ℃ in the furnace) generated by combustion of a hot blast stove enters the spray drying tower, the hot air flowing rapidly in the spray drying tower is fully contacted with atomized slurry droplets, the moisture in the slurry droplets is taken away rapidly, the slurry droplets and waste gas in the slurry droplets are pumped away by a negative pressure draught fan, the slurry droplets with the moisture evaporated are changed into ceramic powder particles, the moisture content is determined by the temperature in the hot blast stove and the air exhaust amount of the negative pressure draught fan, and the moisture content is controlled to be 5-10%.
When the traditional ceramic powder production process is adopted for production, the energy consumption is large, the pollution is serious, and the production cost is high.
In order to solve the problems caused by drying the ceramic slurry by using a spray drying tower, the prior ceramic powder production process comprises the steps of firstly preparing the ceramic slurry into a square filter cake by a filter press, wherein the water content of the filter cake is about 21%, then crushing the filter cake into ceramic pug, then drying the ceramic pug by using the waste heat of a kiln and/or the hot air of a hot air blower to ensure that the water content of the ceramic pug is 7-10%, and finally crushing the ceramic pug into ceramic particles, thereby solving the problem of high energy consumption caused by the adoption of the spray drying tower in the traditional process.
In the process, the drying of the ceramic pug is generally carried out by adopting a belt dryer, and the belt dryer generally has the following problems:
1. the length of the equipment is very long, so the requirement on an installation site is strict; the number of layers of the conveying belt in the belt dryer is generally less and most of the conveying belt is 1-8, if too much pug is in the drying conveying process, small-particle pug in the conveying belt on the upper layer can fall into the conveying belt on the lower layer from meshes of the conveying belt, and finally the passing meshes in the conveying belt on the middle and lower layers are blocked, so that the flow of hot air is influenced, and the drying of materials is not facilitated;
2. in the drying process, the drying time of pugs with different sizes is the same, which can cause that the drying time of small-particle pugs is too long, and the water content is too low to be beneficial to subsequent granulation;
3. when the large-particle ceramic pug is dried, the surface of the large-particle ceramic pug is firstly dried to form hard skin which influences the continuous discharge of water in the pug, so that the drying efficiency is low;
4. drying the pug, and then drying the pug externally and internally, wherein the drying is not uniform enough;
5. the heat in the hot air cannot be fully utilized, so that the energy consumption is high;
6. the hot air in the drying box body is easy to exchange heat with the outside, so that heat loss is caused.
Disclosure of Invention
The invention provides high-efficiency energy-saving mud material drying equipment for solving the problems of high requirement on an installation site, uneven mud material drying and higher energy consumption of the existing dryer.
In order to achieve the functions, the technical scheme provided by the invention is as follows:
an efficient energy-saving mud material drying device comprises n drying units which are sequentially stacked from bottom to top, wherein n is a positive integer not less than 3;
each drying unit comprises a box body and a plurality of conveying belts, the conveying belts are sequentially arranged in the box body from top to bottom, one end of each conveying belt is a feeding end, and the other end of each conveying belt is a blanking end;
at least 1 drying unit positioned in the middle is provided with a screening and crushing device;
the screening and crushing device comprises a screening mechanism and a crushing mechanism;
the crushing mechanism comprises a crushing bin and a crushed material rod, and the crushed material rod is arranged in the crushing bin and is driven to rotate by a driving device;
the screening mechanism comprises a screen which is obliquely arranged, and the mud on the screen slides into the crushing bin through the upper surface of the screen, and falls into the feeding end of the conveying belt on the uppermost layer of the drying unit after being crushed by the crushed material rods; the undersize sludge is conveyed to the bottommost drying unit for drying.
Preferably, the high-efficiency energy-saving mud material drying equipment further comprises a main air inlet pipe and a main air exhaust pipe;
the lower part of each drying unit is at least provided with 1 air inlet branch pipe, and the upper part of each drying unit is at least provided with 1 air exhaust branch pipe;
the air inlet branch pipe is connected with the main air inlet pipe, and the air exhaust branch pipe is connected with the main air exhaust pipe.
Preferably, the conveying belt comprises a plurality of conveying plates made of metal materials, the conveying plates are arranged in parallel, and gaps are reserved between the adjacent conveying plates; in each drying unit, except the conveying belt positioned at the bottommost layer, a plurality of through holes are formed in the conveying plates of other conveying belts.
Preferably, the middle part of the exhaust branch pipe of the mth layer of drying unit from bottom to top is communicated with the air inlet branch pipe of the (n-m + 1) th layer of drying unit through a circulating pipeline; wherein m is a positive integer less than n/2;
and an axial flow fan is arranged at the middle lower part of the circulating pipeline.
Preferably, the lower part of each drying unit is provided with 2 air inlet branch pipes, and the upper part is provided with 2 air exhaust branch pipes;
the 2 air inlet branch pipes and the 2 air exhaust branch pipes are respectively arranged in front-back symmetry.
Preferably, the exhaust flow rate of the main exhaust pipe is greater than the intake flow rate of the main air inlet pipe.
Preferably, the high-efficiency energy-saving pug drying equipment further comprises an outer cover, wherein the box bodies of the plurality of drying units which are sequentially stacked form an inner cover, and an isolation layer is arranged between the outer cover and the inner cover; the main air inlet pipe and the main air exhaust pipe are arranged in the isolation layer.
Preferably, the isolation layer is also provided with at least 1 recovery pipeline; the top of the recovery pipeline is provided with a fan, the bottom of the recovery pipeline is closed, the pipe body is provided with a plurality of recovery branch pipes, and openings of the recovery branch pipes are arranged in the drying unit.
Preferably, the screen mesh has a mesh diameter of 3mm to 8 mm.
Preferably, the screening and crushing device further comprises a material collecting hopper, the material collecting hopper is arranged below the screen, and a spiral feeding mechanism is arranged at the bottom of the material collecting hopper.
The invention has the beneficial effects that:
1. the vertical drying main body is formed by stacking the plurality of drying units, so that on one hand, the modularized production and the assembly are facilitated, the equipment cost is reduced, and on the other hand, the occupation of the equipment on the installation site area is reduced;
2. the screening mechanism is arranged in at least 1 drying unit positioned in the middle part, so that mud entering the box body is screened in advance, and small blocks of mud are directly sent to the bottommost drying unit to reduce the mud drying time, so that the situation that the water content of the small blocks of mud is too low due to too long drying time is avoided; on the other hand, the mud to be dried is reduced, so that the drying efficiency is improved;
3. the crushing mechanism is arranged in at least 1 drying unit positioned in the middle part, so that the large pug is pre-crushed, the particle size of the large pug is reduced, the specific surface area of the large pug is increased, the drying speed of the ceramic pug is improved, and the drying cost is saved;
4. through setting up circulating line, send the hot-blast higher, the lower hot-blast of humidity of temperature in the lower floor drying unit to the upper strata and recycle to practice thrift the energy consumption.
Drawings
FIG. 1 is a schematic diagram of a drying unit with a sifting and crushing device;
FIG. 2 is a schematic diagram of a screening and crushing unit;
FIG. 3 is a schematic view of another perspective of the screen crusher;
FIG. 4 is a schematic view of the crushing apparatus;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a schematic view of another embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of the present invention;
FIG. 8 is a schematic view of the conveyor belt;
fig. 9 is a schematic view of the combination of the conveyor plate and the support tube.
Detailed Description
The invention will be further elucidated with reference to the accompanying figures 1 to 9:
as shown in fig. 5 and fig. 6, the efficient energy-saving mud drying equipment includes n drying units 1 stacked in sequence from bottom to top, in this embodiment, 8 drying units 1 are provided, the number of the drying units 1 can be set according to actual needs, and generally, in order to achieve a better drying effect, the number of the drying units 1 is not less than 3.
As shown in fig. 1, each drying unit 1 comprises a box body 11 and 6 conveying belts 13, wherein the conveying belts 13 are sequentially arranged in the box body 11 from top to bottom, one end of each conveying belt 13 is a feeding end, and the other end of each conveying belt 13 is a blanking end; the top of the box body 11 is provided with a feeding hole, and the bottom is provided with a discharging hole.
At least 1 drying unit 1 in the drying units 1 positioned in the middle is provided with a screening and crushing device 12; a screen crusher device 12 is arranged at the feed opening.
As shown in fig. 8 and 9, the conveyor belt 1 includes a plurality of conveyor plates 131 made of a metal material, the conveyor plates 131 are arranged in parallel with a gap between adjacent conveyor plates 131, and both ends of each conveyor plate are connected to chains 133. In this embodiment, the conveying plate 131 is made of stainless steel, the supporting tube 132 is fixedly disposed at the bottom of the conveying plate 131, the conveying plate 131 is fixedly connected to the chain 133 through two ends of the supporting tube 132, and the supporting tube 132 serves to reinforce the strength and connection of the conveying plate 131. The chain 133 is respectively sleeved on the driving sprocket 134 and the driven sprocket 135, and the motor drives the driving sprocket 134 to rotate.
In order to prevent the conveying belt 13 from sliding off from both ends of the conveying belt 13 during conveying, both ends of the conveying plate 131 close to the chain 2 are respectively provided with a blocking edge 1311, and in this embodiment, the blocking edges 1311 are formed by bending both ends of the conveying plate 131 upwards by about 90 degrees.
In each drying unit 1, the conveying plates 131 of the other conveying belts 13 are provided with a plurality of through holes (not shown) in addition to the conveying belt 13 located at the lowermost layer. Hot air can pass through the through-holes of the conveying plate 131 during drying, thereby improving drying efficiency.
As shown in fig. 2 and 3, the screen crushing device 12 includes a screening mechanism 121 and a crushing mechanism 122.
As shown in fig. 4, the crushing mechanism 122 includes a crushing bin 1221 and crushing rods 1222, the crushing rods 1222 being disposed within the crushing bin 1221 and rotated by a drive device. In this embodiment, 4 pieces of the material rods 1222 are uniformly fixed on the rotating frame 1223, the rotating frame 1223 is rotatably installed in the material crushing bin 1221 and the rotating frame 1223 is driven by the motor a1224 to rotate, and the large pieces of the mud are hit into small pieces by the material rods 1222 after entering the material crushing bin 1221.
In order to improve the crushing efficiency and the crushing uniformity, in the present embodiment, the crushing mechanism 122 further includes a scraper 1226 and a friction screen 1225, and the scraper 1226 is disposed on the crushing rod 1222; the cross section of the sieve plate 12251 on the friction sieve 1225 is circular-arc, the sieve plate 12251 is evenly provided with meshes, the friction sieve 1225 is fixedly arranged below the crushing bin 1221, and the sieve plate 12251 is coaxial with the rotating frame 1223.
The sieving mechanism 121 includes a screen 1211, and the screen 1211 is disposed obliquely, and has a high left side and a low right side, and the right side is located above the crushing bin 1221.
The oversize material slides down through the upper surface of the screen 1211 into the crushing bin 1221, is crushed by the crushing rod 1222 and falls onto the screen plate 12251, is squeezed by the scraping plate 1226, and is extruded out of the mesh openings of the screen plate 12251 and falls onto the feeding end of the conveyor belt 13 located at the uppermost layer of the drying unit 1. In this embodiment, the 3 rd to 5 th drying units 1 are provided with the screening and crushing devices 12, and undersize sludge of the screening and crushing devices 12 is directly conveyed to the feeding end of the uppermost conveyor belt 13 of the bottommost drying unit 1 (i.e., the 1 st drying unit) through a conveying pipeline or the like for drying. This is done to prevent small sludge under the screen 1211, which may have too low a moisture content due to too long a drying time.
The mesh 1211 has a mesh diameter of 3mm to 8mm, and in this embodiment, the mesh 1211 has a mesh diameter of 5 mm. The diameter of the mesh of the sieve plate 12251 is 1cm to 3cm, and the diameter of the mesh of the sieve plate 12251 of the drying unit 1 located on the upper layer is larger than the diameter of the mesh of the sieve plate 12251 of the drying unit 1 located on the lower layer. For the present embodiment, the mesh diameters of the screen plates 12251 of the layer 3 to layer 5 drying units 1 are 6mm, 17mm, and 22mm, respectively.
In order to collect and convey the undersize mud of the screen 1211, as shown in fig. 2 and 3, the screening mechanism 121 further includes a collecting hopper 1212, the collecting hopper 1212 is disposed below the screen 1211, and a spiral feeding mechanism is disposed at a bottom of the collecting hopper 1212. The screw feeding mechanism includes a motor B1213, a rotary shaft 1214 and a screw blade 1215, the screw blade 1215 being uniformly mounted on the rotary shaft 1214. And the undersize pug collected by the collecting hopper 1212 is discharged through a discharge port by a spiral feeding mechanism.
As shown in fig. 4 and 5, the energy-efficient mud drying equipment further includes a main air inlet pipe 2 and a main air exhaust pipe 3, wherein the main air inlet pipe 2 and the main air exhaust pipe 3 are vertically and fixedly installed in the isolation layer 100. The lower part of each drying unit 1 is at least provided with 1 air inlet branch pipe 21, and the upper part is at least provided with 1 air exhaust branch pipe 31; the air intake branch pipe 21 is connected with the main air intake pipe 2, and the exhaust branch pipe 31 is connected with the main exhaust pipe 3. In this embodiment, the lower part of each drying unit 1 is provided with 2 air inlet branch pipes 21, and the upper part is provided with 2 air exhaust branch pipes 31; the 2 air inlet branch pipes 21 and the 2 air outlet branch pipes 31 are respectively arranged in front-back symmetry.
The number of the main air inlet pipes 2 is 2, the main air inlet pipes are arranged on the left side of the equipment in a front-back parallel mode, and the lower end of each main air inlet pipe 2 is provided with an air inlet 24 and is connected with an external hot air conveying pipeline through the air inlet 24. The 2 main air inlet pipes 2 are respectively connected with the air inlet branch pipes 21 positioned on the same side, and the air inlet branch pipes 21 are provided with a fan A22 and an air quantity regulating valve A23 at positions close to the main air inlet pipes 2. The air speed and the air volume entering the drying unit 1 are adjusted by the fan A22 and the air volume adjusting valve A23.
The main exhaust duct 3 has 2 air outlets, the front and the back are arranged on the right side of the equipment in parallel, the lower end of the main exhaust duct 3 is provided with an air outlet 32, and the air outlet 32 is connected with an external air exhaust conveying pipeline. The 2 main exhaust ducts 3 are respectively connected with exhaust branch ducts 31 positioned at the same side, and a fan B33 and an air quantity regulating valve B34 are arranged at the positions of the exhaust branch ducts 31 close to the main exhaust ducts 3. The wind speed and the wind amount drawn from the inside of the drying unit 1 are adjusted by the fan B33 and the wind amount adjusting valve B34.
The air inlet branch pipe 21 and the air exhaust branch pipe 31 are respectively and uniformly provided with a plurality of air equalizing ports 231, the air equalizing ports 231 are flat or fan-shaped integrally, and air inlet or air exhaust is uniform and soft through the air equalizing ports 231 so as to reduce disturbance to powder in the drying unit 1.
In order to prevent the dust in each drying unit 1 from entering the external environment along with the air, in the present embodiment, the exhaust flow rate of the exhaust branch pipe 31 in each drying unit 1 is greater than the intake flow rate of the intake branch pipe 21, so that the inside of each drying unit 1 is in a negative pressure state.
The middle part of an exhaust branch pipe 31 of the mth layer drying unit 1 from bottom to top is communicated with an intake branch pipe 21 of the (n-m + 1) th layer drying unit 1 through a circulating pipeline 4, and the middle lower part of the circulating pipeline 4 is provided with an axial flow fan 5; wherein m is a positive integer less than n/2. In the present embodiment, the exhaust branch pipes 31 of the drying units 1 of the 1 st, 2 nd and 3 rd floors are respectively communicated with the intake branch pipes 21 of the drying units 1 of the 8 th, 7 th and 6 th floors through the circulating pipelines 4. The temperature and humidity of the hot air in the middle two layers, namely the 4 th layer drying unit 1 and the 5 th layer drying unit 1 are relatively close, and circulation is not performed. When the ceramic pug is just processed in the equipment, the water content of the ceramic pug is highest, and the temperature of the ceramic pug is lowest, so that when the equipment works, the temperature of hot air in the drying units 1 from the 8 th layer to the 1 st layer is gradually increased, and the humidity is gradually decreased. High temperature and low humidity in the low-layer drying unit 1 are pumped to the high-layer drying unit 1 through the circulating pipeline 4 for reuse, so that the purposes of energy conservation and emission reduction are achieved.
As shown in fig. 7, the energy-efficient pug drying equipment further comprises an outer cover 6, an inner cover 7 is formed on the outer surface of the box body 11 of the sequentially stacked 8 drying units 1, and an accommodating space is formed between the outer cover 6 and the inner cover 7 and is an isolating layer 100. The isolation layer 100 has two important functions: firstly, dust is prevented from escaping from the drying unit 1 to a workshop in the drying process to pollute the working environment; secondly, prevent that the heat in drying unit 1 from being exchanged in the workshop fast to reduce energy consumption loss, reach energy-conserving purpose.
As shown in fig. 6, the isolation layer 100 is further provided with at least 1 recovery pipe 8; in this embodiment, the number of the recovery pipes 8 is 2, and the recovery pipes are respectively vertically fixed on the left and right sides of the equipment, the top of the recovery pipe 8 is provided with a fan C9, the bottom of the recovery pipe is closed, the pipe body is provided with a plurality of recovery branch pipes 81, and the openings of the recovery branch pipes 81 are arranged in the drying units 1 at corresponding heights. The air in the isolation layer 100 and the hot air in each drying unit 1 are subjected to heat exchange through metal parts on the surfaces of the drying units 1, so that the air in the isolation layer 100 is hot air with high temperature and low humidity, and the hot air is introduced into the drying units 1 through the recovery pipeline 8 to be reused, thereby achieving the purpose of reducing energy consumption; in addition, the flow of hot air in the drying unit 1 can be accelerated by blowing hot air into the drying unit 1 through the recovery pipeline 8, and the drying efficiency is improved.
The drying unit 1 and the isolation layer 100 are also provided with a temperature sensor, a humidity sensor and other components, so as to monitor the running state of the equipment.
When the drying device is used, the fans of the main air inlet pipe 2 and the main air exhaust pipe 3 are started to preheat the drying unit 1; and simultaneously, the top parts of the axial flow fan 5 and the recovery pipeline 8 in the circulating pipeline 4 are started to be provided with a fan C9, and the opening degree of each air volume adjusting valve is adjusted, so that the flow of hot air in the drying unit 1 of the drying equipment reaches a stable state. When the temperature of the air in the drying units 1 rises to a preset temperature (such as 80 ℃), feeding and starting the conveyer belt 13 and the screening mechanism 121 of each drying unit 1 from top to bottom in sequence; the mud material is subjected to three stages of uniform heating, crushing and moisture removal and homogenization in the process of conveying from the highest layer to the drying unit 1 at the bottommost layer; in the crushing and dehumidifying stage, the pug is screened, crushed and dried layer by layer, and the undersize pug is directly sent to the drying unit 1 of the layer 1 for drying and moisture homogenization; after the drying is finished, the conveyer belt 13 and the screening mechanism 121 are sequentially closed from top to bottom, and after the dried mud is completely conveyed out of the equipment, the axial flow fan 5, the fan C9, the main air inlet pipe 2 and the fans of the main air exhaust pipes 3 are closed.
In the above three stages, wherein:
and a uniform heating stage, which is performed in the drying units 1 of the 8 th to 6 th layers and mainly heats the pug at a low temperature (in the embodiment, the temperature is 80-150 ℃), so that the surface and the internal temperature of the pug are consistent, and the drying units 1 are mainly used for heating at the stage, so that the drying units 1 are high in humidity and are more favorable for uniformly heating the surface and the inside of the pug in a damp and hot environment.
And a crushing and dehumidifying stage, which is performed in the drying units 1 of the 5 th to the 3 rd layers and mainly comprises crushing the pug, increasing the specific surface area of the pug, and quickly dehumidifying to ensure that the water content of the pug is quickly reduced.
And a moisture homogenizing stage, which is performed in the drying units 1 of the 2 nd to 1 st layers, and mainly utilizes low-temperature hot air to continuously dry the pug, so that the surface humidity and the inside humidity of the pug are relatively consistent, and the moisture content of the pug reaches a preset value.
Claims (10)
1. The utility model provides a high-efficient energy-saving pug drying equipment which characterized in that: the drying device comprises n drying units which are sequentially stacked from bottom to top, wherein n is a positive integer not less than 3;
each drying unit comprises a box body and a plurality of conveying belts, the conveying belts are sequentially arranged in the box body from top to bottom, one end of each conveying belt is a feeding end, and the other end of each conveying belt is a blanking end;
at least 1 drying unit positioned in the middle is provided with a screening and crushing device;
the screening and crushing device comprises a screening mechanism and a crushing mechanism;
the crushing mechanism comprises a crushing bin and a crushed material rod, and the crushed material rod is arranged in the crushing bin and is driven to rotate by a driving device;
the screening mechanism comprises a screen which is obliquely arranged, and the mud on the screen slides into the crushing bin through the upper surface of the screen, and falls into the feeding end of the conveying belt on the uppermost layer of the drying unit after being crushed by the crushed material rods; the undersize sludge is conveyed to the bottommost drying unit for drying.
2. The efficient energy-saving pug drying equipment according to claim 1, characterized in that: the high-efficiency energy-saving mud material drying equipment also comprises a main air inlet pipe and a main air exhaust pipe;
the lower part of each drying unit is at least provided with 1 air inlet branch pipe, and the upper part of each drying unit is at least provided with 1 air exhaust branch pipe;
the air inlet branch pipe is connected with the main air inlet pipe, and the air exhaust branch pipe is connected with the main air exhaust pipe.
3. The efficient energy-saving pug drying equipment according to claim 1, characterized in that: the conveying belt comprises a plurality of conveying plates made of metal materials, the conveying plates are arranged in parallel, and gaps are formed between every two adjacent conveying plates; in each drying unit, except the conveying belt positioned at the bottommost layer, a plurality of through holes are formed in the conveying plates of other conveying belts.
4. The efficient energy-saving pug drying equipment according to claim 2, characterized in that: the middle part of an exhaust branch pipe of the mth layer of drying unit from bottom to top is communicated with an intake branch pipe of the (n-m + 1) th layer of drying unit through a circulating pipeline; wherein m is a positive integer less than n/2;
and an axial flow fan is arranged at the middle lower part of the circulating pipeline.
5. The efficient energy-saving pug drying equipment according to claim 2, characterized in that: the lower part of each drying unit is provided with 2 air inlet branch pipes, and the upper part is provided with 2 air exhaust branch pipes;
the 2 air inlet branch pipes and the 2 air exhaust branch pipes are respectively arranged in front-back symmetry.
6. The efficient energy-saving pug drying equipment according to claim 2, characterized in that: the air exhaust flow of the main air exhaust pipe is larger than the air inlet flow of the main air inlet pipe.
7. The efficient energy-saving type mud drying equipment according to claim 4, characterized in that: the efficient energy-saving mud material drying equipment also comprises an outer cover, wherein the box bodies of the multiple sequentially stacked drying units form an inner cover, and an isolation layer is arranged between the outer cover and the inner cover; the main air inlet pipe and the main air exhaust pipe are arranged in the isolation layer.
8. The efficient energy-saving type mud drying equipment according to claim 7, characterized in that: the isolation layer is also at least provided with 1 recovery pipeline; the top of the recovery pipeline is provided with a fan, the bottom of the recovery pipeline is closed, the pipe body is provided with a plurality of recovery branch pipes, and openings of the recovery branch pipes are arranged in the drying unit.
9. The efficient energy-saving mud material drying equipment as claimed in any one of claims 1 to 8, wherein:
the diameter of the sieve pore of the sieve is 3 mm-8 mm.
10. The efficient energy-saving type mud drying equipment according to claim 9, characterized in that: the screening and crushing device further comprises a material collecting hopper, the material collecting hopper is arranged below the screen, and a spiral feeding mechanism is arranged at the bottom of the material collecting hopper.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111062773.9A CN113701452A (en) | 2021-09-10 | 2021-09-10 | High-efficiency energy-saving mud material drying equipment |
| PCT/CN2022/082713 WO2023035588A1 (en) | 2021-09-10 | 2022-03-24 | Efficient energy-saving mud drying apparatus |
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| CN202111062773.9A CN113701452A (en) | 2021-09-10 | 2021-09-10 | High-efficiency energy-saving mud material drying equipment |
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| WO (1) | WO2023035588A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023035588A1 (en) * | 2021-09-10 | 2023-03-16 | 佛山市蓝之鲸科技有限公司 | Efficient energy-saving mud drying apparatus |
| CN117232219A (en) * | 2023-07-27 | 2023-12-15 | 海目星 (江门) 激光智能装备有限公司 | Drying oven and control method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116294538B (en) * | 2023-05-23 | 2023-08-22 | 五洲丰农业科技有限公司 | Intelligent low-energy-consumption control method for fertilizer production by comprehensively utilizing flue gas waste heat |
| CN118670117B (en) * | 2024-08-26 | 2024-10-25 | 江苏尚金干燥科技有限公司 | Sectional type high-efficient drying equipment |
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| Publication number | Publication date |
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| WO2023035588A1 (en) | 2023-03-16 |
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Application publication date: 20211126 |