CN110822818A - Drying method and dryer - Google Patents
Drying method and dryer Download PDFInfo
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- CN110822818A CN110822818A CN201911051839.7A CN201911051839A CN110822818A CN 110822818 A CN110822818 A CN 110822818A CN 201911051839 A CN201911051839 A CN 201911051839A CN 110822818 A CN110822818 A CN 110822818A
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- 238000001035 drying Methods 0.000 title claims abstract description 140
- 239000000463 material Substances 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000010981 drying operation Methods 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 108010066278 cabin-4 Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013589 supplement 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
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects 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
- F26B17/08—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 arranged in a sinuous or zig-zag path
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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
- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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- 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
- F26B25/08—Parts thereof
-
- 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
- F26B25/08—Parts thereof
- F26B25/12—Walls or sides; Doors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A drying method comprising the steps of: 1) arranging a plurality of layers of feeding mesh belts in the horizontal drying tunnel, wherein the feeding mesh belts are arranged up and down to form a plurality of layers of drying operation surfaces; 2) the material freely falls from the upper layer feeding net belt to the lower layer feeding net belt to realize material turning; 3) the horizontal drying channel is divided into a moisture extraction section and a circulating air heating drying section; 4) the hot air of the hot air source is respectively sent to the moisture extraction section and the circulating air-heating drying section in the hot air distribution area. A dryer comprises a drying channel and a hot air generating device; at least two layers of feeding mesh belts are arranged in the drying channel; the feeding mesh belts are arranged up and down to form a multi-layer drying operation surface; the drying tunnel is divided into a dehumidifying section drying tunnel and a drying section drying tunnel which are connected through a hot air distribution cabin; the top of the drying tunnel at the dehumidifying section is connected with a top air exhaust pipeline; a bottom air suction pipeline is connected below the bottommost layer feeding mesh belt of the drying channel of the drying section; the top air suction pipeline and the bottom air suction pipeline are both connected with an exhaust fan. The drying method improves the drying efficiency and reduces the energy consumption.
Description
Technical Field
The invention belongs to processing machinery of feeds and the like, and particularly relates to a drying method and a dryer.
Background
In the prior art, feed/grain (hereinafter, referred to as "material") is dried before storage to remove moisture therefrom. The air is usually heated by a heating medium, and then the material is dried, generally speaking, the heating medium is steam. In this way, water needs to be heated to obtain steam, then the steam is used for heating air, and finally the hot air is used for circularly heating and drying the materials, so that energy loss is caused by multiple heat exchanges. In the drying process, due to the unreasonable design of the drying tunnel/air duct, the material drying effect is poor, and the water vapor generated in different drying stages can affect each other.
Disclosure of Invention
In order to solve the technical problems, the invention provides a novel drying method and a dryer for drying feed and the like before storage, and the method comprises the following steps:
a drying method comprising the steps of:
1) arranging a plurality of layers of feeding mesh belts in the horizontal drying tunnel, wherein the feeding mesh belts are arranged up and down to form a plurality of layers of drying operation surfaces;
2) the feeding end of the lower layer feeding mesh belt extends out of the rear part of the blanking end of the upper layer feeding mesh belt, and the material freely falls from the upper layer feeding mesh belt to the lower layer feeding mesh belt to realize material turning;
3) the horizontal drying channel is divided into a front part and a rear part by a partition board, and the partition board is provided with an opening through which a feeding mesh belt and materials pass; the front part is a dehumidifying section, and the rear part is a circulating air-heat drying section;
4) a hot air distribution area is arranged at the connecting position of the dehumidifying section and the circulating air heating drying section, and hot air of a hot air source is respectively sent to the dehumidifying section and the circulating air heating drying section in the area;
A. the hot air duct in the dehumidifying section is as follows:
the air outlet of the hot air source reaches the bottom surface of the lowest layer of the feeding mesh belt, and the feeding mesh belt covered with materials forms an air equalizing plate structure;
then, hot air upwards reaches the uppermost layer of feeding mesh belt from the lowermost layer of feeding mesh belt;
finally, air with moisture is pumped out through an air suction opening at the top of the moisture pumping section;
B. the hot air duct in the circulating air heating drying section is as follows:
the outlet air of the hot air source is divided into a plurality of layers which are respectively arranged above the feeding mesh belts of each layer;
hot air of each layer passes through the material on the surface of the corresponding layer of the feeding mesh belt and is blown downwards until the position below the bottommost layer of the feeding mesh belt;
then, the air below the feeding net belt at the bottommost layer is collected by the air suction opening and then is sent to a cold air inlet of a hot air source.
A cyclone dust collector is connected to the position of an air suction opening at the top of the moisture suction section, and the wet air after dust collection is sent to the atmosphere;
the position of an air suction opening of the circulating air heating drying section is connected with a cyclone dust collector, and the dust-collected air is sent to a hot air source.
A dryer based on the drying method comprises a drying tunnel and a hot air generating device;
at least two layers of feeding mesh belts are arranged in the drying channel; the feeding mesh belts are arranged up and down to form a multi-layer drying operation surface; the feeding end of the lower layer feeding net belt extends out of the rear part of the blanking end of the upper layer feeding net belt; the tail end of the lowest layer of feeding net belt is the discharging end of the dryer, and the feeding end of the dryer is arranged above the head end of the uppermost layer of feeding net belt;
the drying tunnel is divided into a dehumidifying section drying tunnel at the front part and a drying section drying tunnel at the rear part, and the dehumidifying section drying tunnel is connected with the drying section drying tunnel through a hot air distribution cabin;
the head part of the drying channel is connected with the material inlet/outlet cabin; the tail part of the drying channel of the drying section is connected with a material homogenizing cabin; the top of the material inlet/outlet cabin is provided with a material inlet, and the material inlet end of the dryer is arranged below the material inlet; the bottom of the material inlet/outlet cabin is provided with a material outlet, and the material outlet end of the dryer is arranged above the material outlet;
in each layer of feeding mesh belt, the feeding end of the lower layer of feeding mesh belt and the blanking end of the upper layer of feeding mesh belt are both in the refining chamber;
a hot air outlet of the hot air generating device is connected to the hot air distribution cabin through a pipeline; two groups of hot air outlets of the hot air distribution cabin are provided;
the first group of hot air outlets are connected to the bottom in the drying tunnel of the dehumidifying section;
each hot air outlet of the second group of hot air outlets is respectively connected above each layer of feeding mesh belt in the drying tunnel of the drying section;
the top of the drying tunnel at the dehumidifying section is connected with a top air exhaust pipeline;
a bottom air suction pipeline is connected below the bottommost layer feeding mesh belt of the drying channel of the drying section; an air outlet of the bottom air suction pipeline is connected with a cold air inlet of the hot air generating device, and an air supplementing opening with an adjustable opening size is also connected to the cold air inlet of the hot air generating device;
the top air suction pipeline and the bottom air suction pipeline are both connected with an exhaust fan.
Further, a vertical partition plate is arranged in the hot air distribution cabin, and a horizontal hole for a feeding net belt and materials to pass through is formed in the partition plate; the drying tunnel of the dehumidifying section and the drying tunnel of the drying section are respectively arranged at the front side and the rear side of the clapboard;
each hot air outlet of the second group of hot air outlets is arranged on the side surface of the hot air distribution cabin from top to bottom, and an extraction fan is arranged on the upper hot air outlet.
Further, the hot air generating device comprises a combustion chamber and a gas burner; the flame nozzle of the gas burner is in the front part of the combustion chamber; the tail end of the combustion chamber is provided with the cold air inlet, and the cold air inlet faces to a flame nozzle of the gas burner; the front part of the combustion chamber is provided with the hot air outlet;
the combustion chamber is positioned below the drying tunnel, and the length direction of the combustion chamber is consistent with that of the drying tunnel.
Furthermore, the drying tunnel of the dehumidifying section and the drying tunnel of the drying section are formed by sequentially and detachably connecting a plurality of independent cabins; the side of each independent cabin is provided with an openable door, and a heat insulation layer is clamped in a door plate of each door; an insulating layer is clamped in the side wall of the independent cabin;
the top of the independent cabin which forms the drying channel of the dehumidifying section in each independent cabin is provided with an air outlet which is connected to a top air suction pipeline.
Further, the number of layers of the feeding mesh belt is even.
Further, the top air suction pipeline is connected with a cyclone dust collector; the bottom air suction pipeline is connected with a cyclone dust collector.
Further, a feed inlet at the top of the feed/discharge cabin is in an arc shape;
furthermore, a feeding chute is rotatably connected to the feeding/discharging cabin, the feeding chute is positioned above the feeding hole, and a rotating shaft of the feeding chute penetrates through the circular arc-shaped circle center of the feeding hole; the outlet of the feeding chute is positioned right above the feeding hole along the rotating path of the feeding chute;
the outlet of the feeding pipe is arranged above the feeding hole of the feeding chute, and the feeding pipe is connected with a cyclone dust remover.
The technical scheme makes full and effective use of hot air through reasonable air duct design of the drying method, and is particularly suitable for drying operation of materials such as feed, grain and the like.
Drawings
FIG. 1 is a schematic diagram of an air duct and an air direction of the drying method, wherein arrows indicate the air flow direction;
FIG. 2 is a schematic view of the external structure of the dryer;
FIG. 3 is a schematic view of the back structure of the dryer;
FIG. 4 is a left perspective structural view of FIG. 3;
FIG. 5 is a schematic view of the internal structure of the hot air distribution compartment;
in the figure: the device comprises a drying tunnel 1 of a moisture extraction section, a drying tunnel 2 of a drying section, a feeding/discharging cabin 3, a refining cabin 4, a hot air distribution cabin 5, a hot air generating device 6, a feeding mesh belt 7, a feeding hole 8, a discharging hole 9, a feeding chute 10, a feeding pipe 11, an independent cabin 12, an exhaust port 13 at the top of the independent cabin, a top air suction pipeline 14, a bottom air suction pipeline 15, a combustion chamber 16, a gas burner 17, a cold air inlet 18, a first group of hot air outlets 19, a second group of hot air outlets 20, a vertical partition plate 21, a horizontal opening 22, a hot air inlet (a hot air outlet for the hot air generating device) 23 of the hot air distribution cabin, an air supplement port 24, an air suction fan 25, a cyclone dust collector 26 and.
Detailed Description
The present disclosure is further described with reference to the following drawings and detailed description:
referring to fig. 1, a drying method includes the steps of:
1) arranging a plurality of layers of feeding mesh belts in the horizontal drying tunnel, wherein the feeding mesh belts are arranged up and down to form a plurality of layers of drying operation surfaces;
2) the feeding end of the lower layer feeding mesh belt extends out of the rear part of the blanking end of the upper layer feeding mesh belt, and the material freely falls from the upper layer feeding mesh belt to the lower layer feeding mesh belt to realize material turning;
3) the horizontal drying channel is divided into a front part and a rear part by a partition board, and the partition board is provided with an opening through which a feeding mesh belt and materials pass; the front part is a dehumidifying section, and the rear part is a circulating air-heat drying section;
4) a hot air distribution area is arranged at the connecting position of the dehumidifying section and the circulating air heating drying section, and hot air of a hot air source is respectively sent to the dehumidifying section and the circulating air heating drying section in the area;
A. the hot air duct in the dehumidifying section is as follows:
the air outlet of the hot air source reaches the bottom surface of the lowest layer of the feeding mesh belt, and the feeding mesh belt covered with materials forms an air equalizing plate structure;
then, hot air upwards reaches the uppermost layer of feeding mesh belt from the lowermost layer of feeding mesh belt;
finally, air with moisture is pumped out through an air suction opening at the top of the moisture pumping section;
B. the hot air duct in the circulating air heating drying section is as follows:
the outlet air of the hot air source is divided into a plurality of layers which are respectively arranged above the feeding mesh belts of each layer;
hot air of each layer passes through the material on the surface of the corresponding layer of the feeding mesh belt and is blown downwards until the position below the bottommost layer of the feeding mesh belt;
then, the air below the feeding net belt at the bottommost layer is collected by the air suction opening and then is sent to a cold air inlet of a hot air source.
A cyclone dust collector is connected to the position of an air suction opening at the top of the moisture suction section, and the wet air after dust collection is sent to the atmosphere;
the position of an air suction opening of the circulating air heating drying section is connected with a cyclone dust collector, and the dust-collected air is sent to a hot air source.
Referring to fig. 2 to 5, the dryer of the present embodiment includes a drying tunnel and a hot air generating device;
at least two layers of feeding mesh belts (2 layers in the example) are arranged in the drying tunnel; the feeding mesh belts are arranged up and down to form a multi-layer drying operation surface; the feeding end of the lower layer feeding net belt extends out of the rear part of the blanking end of the upper layer feeding net belt; the tail end of the lowest layer of feeding net belt is the discharging end of the dryer, and the feeding end of the dryer is arranged above the head end of the uppermost layer of feeding net belt;
the drying tunnel is divided into a dehumidifying section drying tunnel at the front part and a drying section drying tunnel at the rear part, and the dehumidifying section drying tunnel is connected with the drying section drying tunnel through a hot air distribution cabin;
the head part of the drying channel is connected with the material inlet/outlet cabin; the tail part of the drying channel of the drying section is connected with a material homogenizing cabin; the top of the material inlet/outlet cabin is provided with a material inlet, and the material inlet end of the dryer is arranged below the material inlet; the bottom of the material inlet/outlet cabin is provided with a material outlet, and the material outlet end of the dryer is arranged above the material outlet;
in each layer of feeding mesh belt, the feeding end of the lower layer of feeding mesh belt and the blanking end of the upper layer of feeding mesh belt are both in the refining chamber;
a hot air outlet of the hot air generating device is connected to the hot air distribution cabin through a pipeline; two groups of hot air outlets of the hot air distribution cabin are provided;
the first group of hot air outlets are connected to the bottom in the drying tunnel of the dehumidifying section;
each hot air outlet of the second group of hot air outlets is respectively connected above each layer of feeding mesh belt in the drying tunnel of the drying section;
the top of the drying tunnel at the dehumidifying section is connected with a top air exhaust pipeline;
a bottom air suction pipeline is connected below the bottommost layer feeding mesh belt of the drying channel of the drying section; an air outlet of the bottom air suction pipeline is connected with a cold air inlet of the hot air generating device, and an air supplementing opening with an adjustable opening size is also connected to the cold air inlet of the hot air generating device;
the top air suction pipeline and the bottom air suction pipeline are both connected with an exhaust fan.
In this example:
a vertical partition plate is arranged in the hot air distribution cabin, and a horizontal hole for a feeding net belt and materials to pass through is formed in the partition plate; the drying tunnel of the dehumidifying section and the drying tunnel of the drying section are respectively arranged at the front side and the rear side of the clapboard;
each hot air outlet of the second group of hot air outlets is arranged on the side surface of the hot air distribution cabin from top to bottom, and an extraction fan is arranged on the upper hot air outlet.
The hot air generating device comprises a combustion chamber and a gas burner; the flame nozzle of the gas burner is in the front part of the combustion chamber; the tail end of the combustion chamber is provided with the cold air inlet, and the cold air inlet faces to a flame nozzle of the gas burner; the front part of the combustion chamber is provided with the hot air outlet;
the combustion chamber is positioned below the drying tunnel, and the length direction of the combustion chamber is consistent with that of the drying tunnel.
Furthermore, the drying tunnel of the dehumidifying section and the drying tunnel of the drying section are formed by sequentially and detachably connecting a plurality of independent cabins; the side of each independent cabin is provided with an openable door, and a heat insulation layer is clamped in a door plate of each door; an insulating layer is clamped in the side wall of the independent cabin;
the top of the independent cabin which forms the drying channel of the dehumidifying section in each independent cabin is provided with an air outlet which is connected to a top air suction pipeline.
The number of layers of the feeding net belt is even.
The top air suction pipeline is connected with a cyclone dust collector; the bottom air suction pipeline is connected with a cyclone dust collector.
The feed inlet at the top of the feed/discharge cabin is in an arc shape;
a feeding chute is rotationally connected to the feeding/discharging cabin, the feeding chute is positioned above the feeding hole, and a rotating shaft of the feeding chute penetrates through the circle center of the arc shape of the feeding hole; the outlet of the feeding chute is positioned right above the feeding hole along the rotating path of the feeding chute;
the outlet of the feeding pipe is arranged above the feeding hole of the feeding chute, and the feeding pipe is connected with a cyclone dust remover.
The drying method makes full and reasonable use of hot air, improves drying efficiency and reduces energy consumption by the unique design of the air channel.
Claims (9)
1. A drying method is characterized by comprising the following steps:
1) arranging a plurality of layers of feeding mesh belts in the horizontal drying tunnel, wherein the feeding mesh belts are arranged up and down to form a plurality of layers of drying operation surfaces;
2) the feeding end of the lower layer feeding mesh belt extends out of the rear part of the blanking end of the upper layer feeding mesh belt, and the material freely falls from the upper layer feeding mesh belt to the lower layer feeding mesh belt to realize material turning;
3) the horizontal drying channel is divided into a front part and a rear part by a partition board, and the partition board is provided with an opening through which a feeding mesh belt and materials pass; the front part is a dehumidifying section, and the rear part is a circulating air-heat drying section;
4) a hot air distribution area is arranged at the connecting position of the dehumidifying section and the circulating air heating drying section, and hot air of a hot air source is respectively sent to the dehumidifying section and the circulating air heating drying section in the area;
A. the hot air duct in the dehumidifying section is as follows:
the air outlet of the hot air source reaches the bottom surface of the lowest layer of the feeding mesh belt, and the feeding mesh belt covered with materials forms an air equalizing plate structure;
then, hot air upwards reaches the uppermost layer of feeding mesh belt from the lowermost layer of feeding mesh belt;
finally, air with moisture is pumped out through an air suction opening at the top of the moisture pumping section;
B. the hot air duct in the circulating air heating drying section is as follows:
the outlet air of the hot air source is divided into a plurality of layers which are respectively arranged above the feeding mesh belts of each layer;
hot air of each layer passes through the material on the surface of the corresponding layer of the feeding mesh belt and is blown downwards until the position below the bottommost layer of the feeding mesh belt;
then, the air below the feeding net belt at the bottommost layer is collected by the air suction opening and then is sent to a cold air inlet of a hot air source.
2. The drying method according to claim 1, wherein a cyclone is connected to a suction port at the top of the dehumidifying section, and the dehumidified air is sent to the atmosphere;
the position of an air suction opening of the circulating air heating drying section is connected with a cyclone dust collector, and the dust-collected air is sent to a hot air source.
3. A dryer comprises a drying tunnel and is characterized by also comprising a hot air generating device;
at least two layers of feeding mesh belts are arranged in the drying channel; the feeding mesh belts are arranged up and down to form a multi-layer drying operation surface; the feeding end of the lower layer feeding net belt extends out of the rear part of the blanking end of the upper layer feeding net belt; the tail end of the lowest layer of feeding net belt is the discharging end of the dryer, and the feeding end of the dryer is arranged above the head end of the uppermost layer of feeding net belt;
the drying tunnel is divided into a dehumidifying section drying tunnel at the front part and a drying section drying tunnel at the rear part, and the dehumidifying section drying tunnel is connected with the drying section drying tunnel through a hot air distribution cabin;
the head part of the drying channel is connected with the material inlet/outlet cabin; the tail part of the drying channel of the drying section is connected with a material homogenizing cabin; the top of the material inlet/outlet cabin is provided with a material inlet, and the material inlet end of the dryer is arranged below the material inlet; the bottom of the material inlet/outlet cabin is provided with a material outlet, and the material outlet end of the dryer is arranged above the material outlet;
in each layer of feeding mesh belt, the feeding end of the lower layer of feeding mesh belt and the blanking end of the upper layer of feeding mesh belt are both in the refining chamber;
a hot air outlet of the hot air generating device is connected to the hot air distribution cabin through a pipeline; two groups of hot air outlets of the hot air distribution cabin are provided;
the first group of hot air outlets are connected to the bottom in the drying tunnel of the dehumidifying section;
each hot air outlet of the second group of hot air outlets is respectively connected above each layer of feeding mesh belt in the drying tunnel of the drying section;
the top of the drying tunnel at the dehumidifying section is connected with a top air exhaust pipeline;
a bottom air suction pipeline is connected below the bottommost layer feeding mesh belt of the drying channel of the drying section; an air outlet of the bottom air suction pipeline is connected with a cold air inlet of the hot air generating device, and an air supplementing opening with an adjustable opening size is also connected to the cold air inlet of the hot air generating device;
the top air suction pipeline and the bottom air suction pipeline are both connected with an exhaust fan.
4. The dryer of claim 3 wherein said hot air distribution compartment has a vertical partition with a horizontal opening for the belt and material to pass through; the drying tunnel of the dehumidifying section and the drying tunnel of the drying section are respectively arranged at the front side and the rear side of the clapboard;
each hot air outlet of the second group of hot air outlets is arranged on the side surface of the hot air distribution cabin from top to bottom, and an extraction fan is arranged on the upper hot air outlet.
5. The dryer as claimed in claim 3, wherein said hot wind generating means comprises a combustion chamber and a gas burner; the flame nozzle of the gas burner is in the front part of the combustion chamber; the tail end of the combustion chamber is provided with the cold air inlet, and the cold air inlet faces to a flame nozzle of the gas burner; the front part of the combustion chamber is provided with the hot air outlet;
the combustion chamber is positioned below the drying tunnel, and the length direction of the combustion chamber is consistent with that of the drying tunnel.
6. The dryer according to claim 3, wherein said drying tunnel of the dehumidifying section and said drying tunnel of the drying section are each formed by a plurality of independent compartments detachably connected in sequence; the side of each independent cabin is provided with an openable door, and a heat insulation layer is clamped in a door plate of each door; an insulating layer is clamped in the side wall of the independent cabin;
the top of the independent cabin which forms the drying channel of the dehumidifying section in each independent cabin is provided with an air outlet which is connected to a top air suction pipeline.
7. The dryer of claim 3 wherein said foraminous belt has an even number of layers.
8. The dryer of claim 3, wherein said top draft duct is connected to a cyclone;
the bottom air suction pipeline is connected with a cyclone dust collector.
9. The dryer as claimed in claim 3, wherein a feed opening at a top of said inlet/outlet chamber is formed in a circular arc shape;
a feeding chute is rotationally connected to the feeding/discharging cabin, the feeding chute is positioned above the feeding hole, and a rotating shaft of the feeding chute penetrates through the circle center of the arc shape of the feeding hole; the outlet of the feeding chute is positioned right above the feeding hole along the rotating path of the feeding chute;
the outlet of the feeding pipe is arranged above the feeding hole of the feeding chute, and the feeding pipe is connected with a cyclone dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911051839.7A CN110822818B (en) | 2019-10-31 | 2019-10-31 | Drying method and dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911051839.7A CN110822818B (en) | 2019-10-31 | 2019-10-31 | Drying method and dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110822818A true CN110822818A (en) | 2020-02-21 |
| CN110822818B CN110822818B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911051839.7A Active CN110822818B (en) | 2019-10-31 | 2019-10-31 | Drying method and dryer |
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| CN (1) | CN110822818B (en) |
Cited By (1)
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| CN110822818B (en) | 2024-05-28 |
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