CN103900349A - Fluidized bed dryer - Google Patents
Fluidized bed dryer Download PDFInfo
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- CN103900349A CN103900349A CN201210575065.XA CN201210575065A CN103900349A CN 103900349 A CN103900349 A CN 103900349A CN 201210575065 A CN201210575065 A CN 201210575065A CN 103900349 A CN103900349 A CN 103900349A
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- 238000001035 drying Methods 0.000 claims abstract description 33
- 230000001360 synchronised effect Effects 0.000 claims description 75
- 230000005540 biological transmission Effects 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 42
- 238000007493 shaping process Methods 0.000 abstract description 6
- 235000019504 cigarettes Nutrition 0.000 abstract description 5
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 206010024796 Logorrhoea Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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Abstract
The invention discloses a fluidized bed dryer which comprises a rack, a hot air system, a pressure equalizing air bellow arranged on the rack, a vibration trough and a fluidized drying chamber. A plurality of mesh holes are distributed in a base plate of the vibration trough, the base plate side of the vibration trough and the pressure equalizing air bellow are sealed, and the opening side of the vibration trough and the fluidized drying chamber are sealed. An air inlet of the pressure equalizing air bellow is communicated with an air outlet of the hot air system. The fluidized bed dryer further comprises a rotary shutter device located between the base plate of the vibration trough and an air outlet of the pressure equalizing air bellow and a drive device driving the rotary shutter device to move, and the air outlet clearance of the air outlet of the pressure equalizing air bellow can be changed periodically when the rotary shutter device moves. The air outlet clearance of the air outlet of the pressure equalizing air bellow can be changed periodically when the rotary shutter device moves, and then hot air blown to the base plate of the vibration trough from the pressure equalizing air bellow is made to form periodic pulse type air flow. Therefore, the fluidized bed dryer can improve evenness of drying and shaping materials in the vibration trough, and therefore stability of cigarette quality is improved.
Description
Technical Field
The invention relates to the technical field of tobacco processing, in particular to a fluidized bed dryer.
Background
At present, the existing on-line expansion and drying and shaping technology of tobacco cut stems at home and abroad widely adopts a fluidized bed drying and shaping method.
The currently used fluidized bed dryer comprises a rack, a hot air system, a pressure equalizing air box, a fluidized drying chamber, a vibration groove and the like, wherein the pressure equalizing air box, the fluidized drying chamber, the vibration groove and the like are arranged on the rack, and the top of the fluidized drying chamber is provided with a moisture exhausting system.
The vibration groove is arranged on the frame through a vibration groove frame, a plurality of meshes are distributed on a bottom plate of the vibration groove, the lower part of a side plate of the vibration groove is sealed with the pressure equalizing air box, and the upper part of the side plate of the vibration groove is sealed with the fluidized drying chamber. In the specific operation process, the hot air system takes steam as a heat source to heat air, the heated air is sent into the pressure equalizing air box through an air inlet of the pressure equalizing air box, hot air introduced into the pressure equalizing air box is guided to a bottom plate of the vibration groove through a guide plate of the pressure equalizing air box, and materials in the vibration groove are blown through meshes on the bottom plate, so that the materials are boiled and dried in the fluidized drying chamber; the moisture generated by the material is removed by a moisture removal system.
As the meshes on the bottom plate of the vibration groove are vertical to the horizontal bed surface, in the specific working process, the hot air in the pressure equalizing air box forms direct-current hot air flow from bottom to top after passing through the meshes, the material in the vibration groove is thrown and moved forward in the vibration groove and is blown by the direct-current hot air flow to form a fluidized state, and at the moment, the material and the direct-current hot air flow are fully mixed, so that the vibration groove has a large convection heating effect, and is quickly dried and shaped.
However, the thickness of the materials accumulated on the bottom plate in the forward throwing process of the materials in the vibration groove is not uniform due to the fact that the materials in the vibration groove have different moisture, different particle sizes and different weights; the material at the position with the smaller thickness is easy to boil under the action of the direct-current hot air flow, while the material at the position with the thicker thickness has the stem layering phenomenon, and the boiling height difference of the material is larger when the material is blown to boil by the direct-current hot air flow. If the direct-current hot air flow is too small, the material at the position with thicker thickness cannot be effectively dried and shaped; if the direct-current hot air flow is too large, the distance from the bottom plate is higher when the material at the position with the thinner thickness is boiled, so that most of the material can not fall back to the bed surface of the bottom plate of the vibration groove due to too high boiling, the material can not be normally sent out of the fluidized drying chamber, and the material and the subsequent incoming material can cause equipment blockage; simultaneously, direct current steam flows and causes destruction to the material granule greatly, the garrulous end of material of small granule can block up the mesh on the groove bottom plate that shakes and the mesh on the filter screen of row's damp system, and then cause the amount of wind inhomogeneous in the fluidized drying room, material agglomeration and too dry or both phenomena appear simultaneously appear, make the material water content after the drying uneven, the material agglomeration causes the filling value to reduce, too dry leads to resistant processing ability to descend and all can the increase cost, and influence the stability of cigarette quality.
Disclosure of Invention
The invention provides a fluidized bed dryer which can improve the uniformity of drying and shaping materials in a vibration groove, thereby improving the stability of cigarette quality.
In order to achieve the purpose, the invention provides the following technical scheme:
a fluidized bed dryer comprises a frame, a hot air system, a pressure equalizing air box, a vibration groove and a fluidized drying chamber, wherein the pressure equalizing air box, the vibration groove and the fluidized drying chamber are arranged on the frame; a plurality of meshes are distributed on the bottom plate of the vibration groove, the side of the bottom plate of the vibration groove is sealed with the pressure equalizing air box, and the opening side of the vibration groove is sealed with the fluidized drying chamber; the air intake of voltage-sharing bellows with hot air system's air outlet switch-on still includes:
the rotary louver device is positioned between the bottom plate of the vibration groove and the air outlet of the pressure equalizing air box, and the air outlet gap of the air outlet of the pressure equalizing air box can be periodically changed when the rotary louver device acts;
and the driving device drives the rotating shutter device to act.
Preferably, the rotary shutter device comprises: the vibration groove conveying device comprises a plurality of rotating shafts which are arranged in parallel and perpendicular to the vibration groove conveying direction, wherein each rotating shaft is provided with at least one louver board extending along the length direction of the rotating shaft.
Preferably, the louver boards on each rotating shaft are two, and are symmetrically arranged in a straight line by taking the rotating axis of the rotating shaft as a symmetry line; or,
the louver boards on each rotating shaft are four, and the louver boards are arranged in a cross shape by taking the rotating axis of the rotating shaft as a center line.
Preferably, two ends of each rotating shaft are pivotally mounted on the sealing plate between the pressure equalizing air box and the vibration groove through bearings.
Preferably, the rotating shutter device has at least two synchronous tooth speed zones, and each synchronous tooth speed zone contains a plurality of rotating shafts; any two rotating shafts in each synchronous tooth speed zone are in transmission connection through a synchronous mechanism.
Preferably, the synchronization mechanism between any adjacent two of the rotation shafts includes: the chain is in transmission connection with the two chain wheels, one chain wheel is arranged on one rotating shaft, and the other chain wheel is arranged on the other rotating shaft; or,
the gear is arranged on one rotating shaft, and the other gear is arranged on the other rotating shaft.
Preferably, the driving means includes: and the variable-frequency speed regulating motors correspond to the synchronous tooth speed zones one by one.
Preferably, any two adjacent synchronous tooth speed areas are in transmission connection with each other through a linkage mechanism, and the driving device comprises a driving motor for driving one synchronous tooth speed area.
Preferably, in any two adjacent synchronous tooth speed zones, the last rotating shaft of one synchronous tooth speed zone is adjacent to the first rotating shaft of the other synchronous tooth speed zone, and the linkage mechanism comprises:
the chain is in transmission connection with the two crankshafts, one of the crankshafts is arranged on the last rotating shaft, and the other one of the crankshafts is arranged on the first rotating shaft; or,
two intermeshing's gear, one the gear set up in last rotation axis, another the gear set up in first rotation axis.
Preferably, along the conveying direction of the vibrating groove, in two adjacent synchronous tooth speed areas:
the transmission ratio of a chain wheel on the last rotating shaft of the previous synchronous tooth speed area to a chain wheel on the first rotating shaft of the next synchronous tooth speed area is more than 1; or,
the transmission ratio of the gear on the last rotating shaft in the former synchronous tooth speed area to the gear on the first rotating shaft in the latter synchronous tooth speed area is greater than 1.
The invention provides a fluidized bed dryer, which comprises a rack, a hot air system, a pressure equalizing air box, a vibration groove and a fluidized drying chamber, wherein the pressure equalizing air box, the vibration groove and the fluidized drying chamber are arranged on the rack; a plurality of meshes are distributed on the bottom plate of the vibration groove, the side of the bottom plate of the vibration groove is sealed with the pressure equalizing air box, and the opening side of the vibration groove is sealed with the fluidized drying chamber; the air intake of voltage-sharing bellows with hot air system's air outlet switch-on still includes:
the rotary louver device is positioned between the bottom plate of the vibration groove and the air outlet of the pressure equalizing air box, and the air outlet gap of the air outlet of the pressure equalizing air box can be periodically changed when the rotary louver device acts;
and the driving device drives the rotating shutter device to act.
When the fluidized bed dryer works, the hot air system leads heated hot air into the pressure equalizing air box and leads the heated hot air to the vibration groove through the guide plate in the pressure equalizing air box, at the moment, the rotating louver device positioned between the bottom plate of the vibration groove and the air outlet of the pressure equalizing air box acts under the driving of the driving device, the gap of the air outlet of the pressure equalizing air box can be periodically changed when the rotating louver device acts, the size of the air flow blown to the bottom plate of the vibration groove by the pressure equalizing air box is adjusted by changing the air outlet gap of the air outlet of the pressure equalizing air box, and then the hot air blown to the bottom plate of the vibration groove by the pressure equalizing air box forms periodic pulse air; when the air outlet gap of the air outlet of the pressure equalizing air box is larger, the airflow of the pulse type airflow is larger, and the material at the position with thicker thickness in the vibration groove can be blown, and at the moment, the material at the position with thinner thickness in the vibration groove can be boiled too high; when the air outlet gap of the air outlet of the pressure equalizing air box is smaller, the airflow of the pulse type airflow is smaller, and the materials which are too high in boiling can fall back to the vibration groove, so that the materials are normally sent out of the fluidized drying chamber.
Therefore, the fluidized bed dryer provided by the invention can improve the uniformity of drying and shaping the materials in the vibration groove, thereby improving the stability of the quality of cigarettes.
Drawings
Fig. 1 is a schematic view of the overall structure of a fluidized bed dryer according to the present invention;
FIG. 2 is a schematic view of the transmission principle of the rotary louver device and the driving device thereof in the fluidized bed dryer shown in FIG. 1;
FIG. 3 is a schematic view of the structure of the fluidized bed dryer of FIG. 1 in the direction A-A;
FIG. 4 is an enlarged view of a portion of the fluidized bed dryer of FIG. 3;
FIG. 5 is a schematic view of a transmission structure between two adjacent synchronous tooth speed zones in the fluidized bed dryer shown in FIG. 1;
fig. 6 is a schematic view of an installation structure of a rotary louver device in the fluidized bed dryer provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the fluidized bed dryer provided by the invention comprises a frame 3, a hot air system 6, a pressure equalizing air box 4 mounted on the frame 3, a vibration trough 1 and a fluidized drying chamber 10; a plurality of meshes are distributed on the bottom plate of the vibration groove 1, the side of the bottom plate of the vibration groove 1 is sealed with the pressure equalizing air box 4, and the opening side of the vibration groove 1 is sealed with the fluidized drying chamber 10; as shown in fig. 2, the air inlet 41 of the pressure equalizing air box 4 is connected to the air outlet of the hot air system 6, and further includes:
the rotary louver device 5 is positioned between the bottom plate of the vibration groove 1 and the air outlet of the pressure equalizing air box 4, and the air outlet gap of the air outlet of the pressure equalizing air box 4 can be periodically changed when the rotary louver device 5 acts; and a driving device 11 for driving the rotary shutter device 5 to act.
In the working process of the fluidized bed dryer, the material to be dried and shaped enters the vibration groove 1 from the feed inlet C of the fluidized bed dryer, and the dried and shaped material is sent out of the vibration groove 1 from the discharge outlet D of the fluidized bed dryer; the vibration groove 1 vibrates under the drive of the motor 7 and the vibration crankshaft, when materials are fed into the vibration groove 1, the hot air system 6 leads heated hot air into the pressure equalizing air box 4 and leads the heated hot air to the vibration groove 1 through a guide plate in the pressure equalizing air box 4, at the moment, the rotary louver device 5 positioned between the bottom plate of the vibration groove 1 and the air outlet of the pressure equalizing air box 4 acts under the drive of the driving device 11, the gap of the air outlet of the pressure equalizing air box 4 can be periodically changed when the rotary louver device 5 acts, the size of the air flow blown to the bottom plate of the vibration groove 1 by the pressure equalizing air box 4 is adjusted by changing the air outlet gap of the air outlet of the pressure equalizing air box 4, and then the hot air blown to the bottom plate of the vibration groove 1 by the pressure; when the air outlet gap of the air outlet of the pressure equalizing air box 4 is larger, the airflow of the pulse type airflow is larger, and the material at the position with thicker thickness in the vibration groove 1 can be blown, and at the moment, the material at the position with thinner thickness in the vibration groove 1 can be boiled too high; when the air outlet gap of the air outlet of the pressure equalizing air box 4 is smaller, the airflow of the pulse airflow is smaller, and the materials which are too high in boiling can fall back to the vibration groove 1, so that the materials are normally sent out of the fluidized drying chamber 10.
Therefore, the fluidized bed dryer provided by the invention can improve the uniformity of drying and shaping the materials in the vibration groove 1, thereby improving the stability of the quality of cigarettes.
Meanwhile, when the materials in the vibration groove 1 are dried and shaped. The moisture removal system 9 at the top of the fluidized drying chamber 10 removes moisture from the fluidized drying chamber 10, and the fluidized drying chamber 10 is provided with a maintenance door 13 to facilitate maintenance of the various components in the fluidized drying chamber 10.
Specifically, in one embodiment, as shown in fig. 3, the above-mentioned rotary shutter device 5 comprises: a plurality of rotating shafts 51 which are arranged in parallel and are perpendicular to the transportation direction of the vibrating trough 1, and at least one louver plate 52 which extends along the length direction of the rotating shafts 51 is arranged on each rotating shaft 51. The rotation shaft 51 can adjust the angle of the louver board 52 when rotating, thereby adjusting the size of the shielding surface of the louver board 52 opposite to the air outlet of the pressure equalizing air box 4, and further adjusting the air outlet gap of the air outlet of the pressure equalizing air box 4. And certain gaps are formed between the louver boards 52 arranged on the two adjacent rotating shafts 51, so that the louver boards 52 arranged on the two adjacent rotating shafts 51 cannot generate friction, collision and the like in the rotating process.
As shown in fig. 2, the driving device 11 may include a motor, and a speed reducer 8 in transmission connection with an output shaft of the motor, wherein the speed reducer 8 is in transmission connection with the rotating shaft through a chain 81. Of course, a belt drive connection via pulleys is also possible.
Specifically, in the above embodiment, the louver plates 52 on each of the rotating shafts 51 may be two, and are symmetrically arranged in a line with the rotation axis of the rotating shaft 51 as a symmetry line; when the louver blades on each rotating shaft 51 are in a horizontal position, the dead-against area of the rotating louver blades 52 on each rotating shaft 51 and the air outlet of the pressure equalizing air box 4 is the largest, the air outlet gap of the air outlet of the pressure equalizing air box 4 is the smallest, and the air flow blown to the bottom plate of the vibration groove 1 by the pressure equalizing air box 4 is the smallest; when the louver blades on one rotating shaft 51 are in the vertical position, the area of the rotating louver blades 52 on each rotating shaft 51, which is just opposite to the air outlet of the pressure equalizing air box 4, is the smallest, the air outlet gap of the air outlet of the pressure equalizing air box 4 is the largest, and the air flow blown to the bottom plate of the vibrating groove 1 by the pressure equalizing air box 4 is the largest. When the rotary shaft 51 is continuously operated, the louver plates 52 provided on the rotary shaft 51 periodically adjust the air outlet gap of the air outlet of the pressure equalizing air box 4.
Of course, as shown in fig. 1, the louver plates 52 on each of the rotating shafts 51 may be four, and arranged in a cross shape with the rotating axis of the rotating shaft 51 as a center line.
Referring to fig. 6, in the above-mentioned rotary louver device 5, both ends of each rotary shaft 51 are pivotally mounted on the sealing plate 2 between the pressure equalizing bellows 4 and the vibration groove 1 through bearings, and the bearings 61 provided at both ends of the rotary shaft 51 are as shown in fig. 6. And dust boxes 60 are formed at both end positions of each of the rotating shafts 51 in order to protect bearings at both ends of the rotating shaft 51.
In one embodiment of the present invention, as shown in fig. 5, the rotary louver device 5 has at least two synchronous tooth speed zones, such as a synchronous tooth speed zone a and a synchronous tooth speed zone B, and each synchronous tooth speed zone includes a plurality of rotating shafts 51; any two rotating shafts 51 in each synchronous tooth speed zone are in transmission connection through a synchronous mechanism.
The rotating speeds of the rotating shafts 51 in each synchronous tooth speed zone are the same, and the driven device 11 is synchronously driven by the synchronous mechanism, so that the louver boards 52 arranged on the rotating shafts 51 in the synchronous tooth speed zone can synchronously rotate to the horizontal position or the vertical position, and the synchronism of the opening or closing operation of the louver boards 52 of the rotating shafts 51 in the synchronous tooth speed zone is improved.
In one embodiment, as shown in fig. 5, the synchronizing mechanism between any two adjacent rotating shafts 51 in the one synchronous gear speed zone includes: the chain drive mechanism comprises two chain wheels with the same specification and a chain 82 in transmission connection with the two chain wheels, wherein one chain wheel is arranged on one rotating shaft, and the other chain wheel is arranged on the other rotating shaft; specifically, in the configuration shown in fig. 4, the rotation axis 511 is adjacent to the rotation axis 512, and the rotation axis 512 is also adjacent to the rotation axis 513; one end of the rotating shaft 511 is provided with a toothed disc 5111 and a toothed disc 5112 which are coaxially fixed, one end of the rotating shaft 512 is provided with a toothed disc 5121 and a toothed disc 5122 which are coaxially fixed, and one end of the rotating shaft 513 is provided with a toothed disc 5131 and another toothed disc which are coaxially fixed; wherein the crankset 5112 and the crankset 5122 have the same specification and are in transmission connection through a chain 82; the crankset 5121 and the crankset 5131 have the same specification and are in transmission connection through a chain 82; and the chain wheel 5111 is connected with other chain wheels through chain transmission.
Alternatively, the synchronizing mechanism between any two adjacent rotating shafts 51 in the one synchronous tooth speed zone includes: the two gears are in the same specification and meshed with each other, one gear is arranged on one rotating shaft, and the other gear is arranged on the other rotating shaft.
In order to adjust the rotation speed of the inner rotating shaft 51 of the rotating louver device and further adjust the cycle period of the pulse-type airflow formed at the air outlet of the pressure equalizing air box 4, in an embodiment, as shown in fig. 5, the driving device 11 includes a variable frequency adjustable motor corresponding to the synchronous tooth speed zones one by one, i.e., the power source of the driving device 11 is a variable frequency adjustable motor, and the adjustment of the rotation speed of the rotating shaft 51 can be realized by adjusting the rotation speed of the variable frequency adjustable motor.
In another embodiment, in order to reduce the number of motors used in the fluidized bed dryer, a linkage mechanism is arranged between any two adjacent synchronous tooth speed zones, and the driving device 11 comprises a driving motor for driving one synchronous tooth speed zone. The adjacent synchronous tooth speed areas are in transmission connection through a linkage mechanism, so that the use number of the motors can be reduced.
Specifically, in any two adjacent synchronous tooth speed zones, as shown in fig. 5, the last rotating shaft 54 of one synchronous tooth speed zone a is adjacent to the first rotating shaft 55 of the other synchronous tooth speed zone B, and the above-mentioned link mechanism may include:
two chain wheels and a chain in transmission connection with the two chain wheels, wherein one chain wheel is arranged on the last rotating shaft 54, and the other chain wheel is arranged on the first rotating shaft 55;
in the structure shown in fig. 5, the last rotating shaft 54 of the synchronous tooth speed area a is provided with a toothed disc 541 and a toothed disc 542 which are coaxially fixed, the first rotating shaft 55 of the synchronous tooth speed area B is provided with a toothed disc 551 corresponding to the toothed disc 542, wherein the last rotating shaft 54 in the synchronous tooth speed area a is synchronously driven with other rotating shafts in the synchronous tooth speed area a through the toothed disc 541, and the last rotating shaft 54 in the synchronous tooth speed area a is in transmission connection with the toothed disc 551 on the first rotating shaft 55 in the synchronous tooth speed area B through the toothed disc 542 and the chain 83.
Alternatively, the last rotation shaft 54 of one synchronous tooth speed zone a is adjacent to the first rotation shaft 55 of the other synchronous tooth speed zone B, and the above-mentioned link mechanism may include:
two gears are engaged with each other, one gear is disposed on the last rotation shaft 54 of the synchronous tooth speed zone a, and the other gear is disposed on the first rotation shaft 55 of the synchronous tooth speed zone B.
The principle of the gear transmission is not described in detail here.
In one embodiment, the material just entering the vibration trough 1 through the feeding hole C of the fluidized bed dryer has low temperature and high water content, the temperature of the material is gradually increased and the water content is gradually decreased along with the material being conveyed towards the discharging hole D, in order to make the airflow passing through the rotating shutter device distribute the air quantity alternately and uniformly according to the water content of the material, the rotating speed of the rotating shaft 51 in two adjacent synchronous tooth speed areas is decreased sequentially along the conveying direction of the vibration trough 1; the above effects can be achieved by the following structure:
corresponding to the previous embodiment, when the last rotation shaft 54 of the synchronous tooth speed zone a is adjacent to the first rotation shaft 55 of another synchronous tooth speed zone B as shown in fig. 5, the above-mentioned linkage mechanism may include:
when one chain wheel is arranged on the last rotating shaft 54 and the other chain wheel is arranged on the first rotating shaft 55, the transmission ratio of the chain wheel 542 on the last rotating shaft 54 of the front synchronous tooth speed area A to the chain wheel 551 on the first rotating shaft 55 of the rear synchronous tooth speed area B is more than 1; the structure can realize that the rotating speed of the rotating shaft in the synchronous tooth speed zone B is less than the tooth speed of the rotating shaft in the synchronous tooth speed zone A.
Alternatively, when the last rotation shaft 54 of the synchronous tooth speed zone a is adjacent to the first rotation shaft 55 of the other synchronous tooth speed zone B, the above-mentioned linkage mechanism comprises two gears meshed with each other, one gear is arranged on the last rotation shaft 54 of the synchronous tooth speed zone a, and the other gear is arranged on the first rotation shaft 55 of the synchronous tooth speed zone B, and the transmission ratio of the gear on the last rotation shaft 54 of the previous synchronous tooth speed zone a to the gear on the first rotation shaft 55 of the next synchronous tooth speed zone B is greater than 1. This structure also makes it possible to achieve a rotation speed of the rotating shaft in the synchronous tooth speed zone B that is lower than the tooth speed of the rotating shaft in the synchronous tooth speed zone a.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A fluidized bed dryer comprises a frame, a hot air system, a pressure equalizing air box, a vibration groove and a fluidized drying chamber, wherein the pressure equalizing air box, the vibration groove and the fluidized drying chamber are arranged on the frame; a plurality of meshes are distributed on the bottom plate of the vibration groove, the side of the bottom plate of the vibration groove is sealed with the pressure equalizing air box, and the opening side of the vibration groove is sealed with the fluidized drying chamber; the air intake of voltage-sharing bellows with hot air system's air outlet switch-on, its characterized in that still includes:
the rotary louver device is positioned between the bottom plate of the vibration groove and the air outlet of the pressure equalizing air box, and the air outlet gap of the air outlet of the pressure equalizing air box can be periodically changed when the rotary louver device acts;
and the driving device drives the rotating shutter device to act.
2. The fluidized bed dryer of claim 1, wherein the rotary louver apparatus comprises: the vibration groove conveying device comprises a plurality of rotating shafts which are arranged in parallel and perpendicular to the vibration groove conveying direction, wherein each rotating shaft is provided with at least one louver board extending along the length direction of the rotating shaft.
3. The fluidized bed dryer according to claim 2, wherein the louver plates on each of the rotating shafts are two and are symmetrically arranged in a line with the rotation axis of the rotating shaft as a line of symmetry; or,
the louver boards on each rotating shaft are four, and the louver boards are arranged in a cross shape by taking the rotating axis of the rotating shaft as a center line.
4. The fluidized bed dryer as claimed in claim 3, wherein both ends of each of said rotary shafts are pivotally mounted to the sealing plates between said pressure equalizing bellows and said vibration groove through bearings.
5. The fluidized bed dryer of claim 4, wherein said rotating louver means has at least two synchronized tooth velocity zones therein, and each of said synchronized tooth velocity zones contains a plurality of said rotating shafts therein; any two rotating shafts in each synchronous tooth speed zone are in transmission connection through a synchronous mechanism.
6. The fluidized bed dryer of claim 5, wherein the synchronization mechanism between any adjacent two of the rotating shafts comprises: the chain is in transmission connection with the two chain wheels, one chain wheel is arranged on one rotating shaft, and the other chain wheel is arranged on the other rotating shaft; or,
the gear is arranged on one rotating shaft, and the other gear is arranged on the other rotating shaft.
7. The fluidized bed dryer of claim 5, wherein the drive means comprises: and the variable-frequency speed regulating motors correspond to the synchronous tooth speed zones one by one.
8. The fluidized bed dryer as claimed in claim 5, wherein a linkage is provided between any adjacent two of said synchronous tooth speed sections, and said drive means comprises a drive motor for driving one of said synchronous tooth speed sections.
9. The fluidized bed dryer of claim 8, wherein the last axis of rotation of one of said synchronized tooth velocity zones is adjacent to the first axis of rotation of the other of said synchronized tooth velocity zones in any adjacent two of said synchronized tooth velocity zones, the linkage mechanism comprising:
the chain is in transmission connection with the two crankshafts, one of the crankshafts is arranged on the last rotating shaft, and the other one of the crankshafts is arranged on the first rotating shaft; or,
two intermeshing's gear, one the gear set up in last rotation axis, another the gear set up in first rotation axis.
10. The fluidized bed dryer of claim 9, wherein in the conveying direction of the trough, two adjacent synchronous tooth velocity zones:
the transmission ratio of a chain wheel on the last rotating shaft of the previous synchronous tooth speed area to a chain wheel on the first rotating shaft of the next synchronous tooth speed area is more than 1; or,
the transmission ratio of the gear on the last rotating shaft in the former synchronous tooth speed area to the gear on the first rotating shaft in the latter synchronous tooth speed area is greater than 1.
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| CN201210575065.XA CN103900349B (en) | 2012-12-26 | 2012-12-26 | A kind of fluid bed dryer |
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| CN201210575065.XA CN103900349B (en) | 2012-12-26 | 2012-12-26 | A kind of fluid bed dryer |
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| CN103900349B CN103900349B (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560323A (en) * | 2017-08-18 | 2018-01-09 | 北京长峰金鼎科技有限公司 | Boiling method and fluid bed based on fluid bed |
| CN117213170A (en) * | 2023-10-28 | 2023-12-12 | 哈尔滨理工大学 | Magnetic cyclone pulse fluidized bed traditional Chinese medicine drying device and application method thereof |
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| CN101474427A (en) * | 2009-01-07 | 2009-07-08 | 中山大学中山眼科中心 | Construction system and method of tissue engineering product |
| CN101625193A (en) * | 2009-08-04 | 2010-01-13 | 东北林业大学 | Energy-saving air power source system of wood drying device |
| CN203100353U (en) * | 2012-12-26 | 2013-07-31 | 丁天武 | Fluidized bed dryer |
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| WO1998035569A1 (en) * | 1997-02-12 | 1998-08-20 | Comas S.P.A. | A drying machine for shredded tobacco, in particular for rolls of expanded shredded tobacco |
| CN2389335Y (en) * | 1999-09-23 | 2000-07-26 | 常州市智思机械制造有限公司 | Lower blowing type vibration fluidization dryer |
| CN201138125Y (en) * | 2007-12-14 | 2008-10-22 | 江苏智思机械集团有限公司 | Stem cut fluidized dryer with balanced material moisture |
| CN101474427A (en) * | 2009-01-07 | 2009-07-08 | 中山大学中山眼科中心 | Construction system and method of tissue engineering product |
| CN101625193A (en) * | 2009-08-04 | 2010-01-13 | 东北林业大学 | Energy-saving air power source system of wood drying device |
| CN203100353U (en) * | 2012-12-26 | 2013-07-31 | 丁天武 | Fluidized bed dryer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107560323A (en) * | 2017-08-18 | 2018-01-09 | 北京长峰金鼎科技有限公司 | Boiling method and fluid bed based on fluid bed |
| CN107560323B (en) * | 2017-08-18 | 2022-10-21 | 北京长峰金鼎科技有限公司 | Fluidized bed-based boiling method and fluidized bed |
| CN117213170A (en) * | 2023-10-28 | 2023-12-12 | 哈尔滨理工大学 | Magnetic cyclone pulse fluidized bed traditional Chinese medicine drying device and application method thereof |
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| Publication number | Publication date |
|---|---|
| CN103900349B (en) | 2016-04-06 |
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