CN108168228B - Drying method of tea seed dryer - Google Patents
Drying method of tea seed dryer Download PDFInfo
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- CN108168228B CN108168228B CN201711426106.8A CN201711426106A CN108168228B CN 108168228 B CN108168228 B CN 108168228B CN 201711426106 A CN201711426106 A CN 201711426106A CN 108168228 B CN108168228 B CN 108168228B
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- drying
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- centrifugal fan
- heat exchanger
- drying box
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
- F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- General Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Tea And Coffee (AREA)
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Abstract
The invention relates to a drying method of a tea seed dryer, wherein the dryer comprises a centrifugal fan, a heat exchanger, a drying box with an opening, a steam generator and a control system for controlling the wind power of the centrifugal fan, wherein the side wall of the drying box is provided with a wind inlet, the heat radiating surface of the heat exchanger is arranged between the wind outlet end and the wind inlet of the centrifugal fan, the heat exchanger is communicated with the steam generator through a steam inlet pipe, a sieve plate is arranged inside the drying box, the sieve plate and the bottom of the drying box are arranged in a gap, the gap part forms a drying channel, and the wind inlet is communicated with the drying channel; the invention is characterized in that: the tea seed drying device has the advantages that the tea seed drying device realizes segmented drying treatment on tea seeds in the drying box, and due to the design, the tea seeds in the drying box are prevented from being heated unevenly and being burnt and burnt in the drying process, the energy consumption of the centrifugal fan is reduced, the manufacturing cost of the tea seeds is reduced, and the quality and the taste of finished tea oil are guaranteed.
Description
Technical Field
The invention relates to the technical field of baking mechanical equipment, in particular to a drying method of a tea seed dryer.
Background
The camellia seeds are unique woody oil plants in China and are widely distributed in the south of China, the camellia oil extracted from the camellia has high nutritional price and health care function, can enhance the elasticity and toughness of blood vessels, delay arteriosclerosis, increase the gastrointestinal absorption function, promote endocrine, prevent and treat the decline of neurological function, improve the immunity of human bodies and the like, and the fatty acid composition of the camellia oil is similar to olive oil and is called eastern olive oil. Therefore, the tea oil has a large market space in China. The drying is the first process of processing and utilizing the camellia seeds, and has important influence on the quality, the oil yield and the quality of grease of the camellia seeds. For a long time, tea oil is mainly prepared, harvested and managed by farmers for workshop oil extraction, drying mainly adopts a frying method and a natural drying method, the required time is long, the labor intensity is high, the camellia seeds with high moisture content are easy to rot, oil and acid are putrefactive, the subsequent processing process is seriously influenced, and the tea oil becomes one of the bottlenecks of large-scale production of tea oil. In addition, some enterprises also adopt dryers to dry camellia seeds, but the existing dryers comprise drying boxes, when the tea seeds in the drying boxes are dried, the tea seeds in different areas in the drying boxes are dried and heated unevenly, even the tea seeds in partial areas are scorched and burnt, so that the quality and the taste of the finished product tea oil are affected; and the overall structure of the dryer is complex, the manufacturing cost is high, and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the drying method of the tea seed dryer, which has the advantages of simple structure, low manufacturing cost, uniform drying and heating of tea seeds, no occurrence of the condition of drying the tea seeds into coke and paste and guarantee of the quality and the taste of the finished tea oil.
The technical scheme of the invention is realized as follows: a drying method of a tea seed dryer is characterized in that: the dryer comprises a centrifugal fan, a heat exchanger, a drying box with an opening, a steam generator and a control system for controlling the wind power of the centrifugal fan, wherein an air inlet is formed in the side wall of the drying box, a heat dissipation surface of the heat exchanger is arranged between the air outlet end and the air inlet of the centrifugal fan, the heat exchanger is communicated with the steam generator through a steam inlet pipe, a sieve plate is arranged inside the drying box, the sieve plate and the bottom of the drying box are arranged in a clearance, the clearance part forms a drying channel, and the air inlet is communicated with the drying channel; the control system comprises a controller and a plurality of temperature sensors, wherein a power supply end of the centrifugal fan is electrically connected with the controller, the temperature sensors are electrically connected with the controller through leads, and the temperature sensors are equidistantly arranged on a drying channel of the drying box along the gas flowing direction; the method of the dryer includes the following steps: (1) uniformly placing tea seeds on a sieve plate in a drying box; (2) the steam generator continuously flows steam into the heat exchanger through the steam inlet pipe, and at the moment, the centrifugal fan is started to blow in hot gas emitted by the heat exchanger into a drying channel of the drying box so as to dry the tea seeds; (3) meanwhile, a plurality of temperature sensors on the drying channel can sense the temperature of each area in the drying channel at all times, the sensed temperature is fed back to the controller, and at the moment, the controller controls the wind power of the centrifugal fan.
Preferably: an electric heating mechanism is arranged between the air outlet end of the centrifugal fan and the heat radiating surface of the heat exchanger, the electric heating mechanism comprises a box body and heating wires arranged in the box body, the box body is arranged in a hollow mode, and the hollow portion is communicated with the air outlet end of the centrifugal fan and the heat radiating surface of the heat exchanger respectively.
Through adopting above-mentioned technical scheme, because utilize centrifugal fan's theory of operation to insufflate the heat in to the stoving passageway continuously among the prior art, thereby carry out drying process to tea seed, however, the heat is to the back of insufflating of stoving passageway, the temperature of the tail end of this stoving passageway is higher than the temperature of the front end of stoving passageway all the time, cause the tea seed stoving of this stoving incasement part subregion (the front end that is the stoving passageway) to be heated inhomogeneous, the tea seed of subregion (the tail end that is the stoving passageway) can produce the burnt even, the burnt condition, thereby influence the quality and the taste of finished product tea-seed oil. In the invention, steam is introduced into the heat exchanger, the centrifugal fan blows hot air emitted by the heat exchanger into the drying channel, the temperatures of different areas in the drying channel are continuously sensed by utilizing a plurality of temperature sensors in the control system, if the temperature at the tail end of the drying channel is always higher than the temperature at the front end of the drying channel, the temperature sensed by the temperature sensors on the drying channel is fed back to the controller, at the moment, the controller controls the rotating speed of the fan blades of the centrifugal fan to reduce the wind power blown into the drying channel, so that a large amount of wind can only blow to the front end in the drying channel, and a small amount of wind blows to the tail end in the drying channel, thereby realizing the segmented drying treatment of the tea seeds in the drying box, and by adopting the design, the conditions of uneven heating and coke and paste of the tea seeds in the drying box in the drying process are avoided, and the energy consumption of the centrifugal fan is also reduced, the manufacturing cost of the tea seeds is reduced, so that the quality and the taste of the finished tea oil are also ensured. The invention has simple integral structure and low manufacturing cost.
The invention is further configured to: the steam recovery device comprises a shell and a separation pipe positioned in the shell, wherein a gas outlet pipe is arranged at the upper end of the shell, a liquid outlet pipe is arranged at the lower end of the shell, a gas-liquid inlet pipe communicated with a heat exchanger is arranged on the side wall of the shell, the separation pipe is a spiral pipe, the spiral pipe comprises a pipe body formed by winding a pipeline in a spiral shape, one end of the pipe body is communicated with the gas-liquid inlet pipe, the other end of the pipe body is communicated with the gas outlet pipe, a plurality of small holes are formed in the outer edge of the pipe wall of the spiral pipe, and the small holes are formed in the outer edge pipe wall of the upper half part of the pipe body; and the gas outlet end of the gas outlet pipe is communicated with the steam generator.
By adopting the technical scheme, a gas-liquid mixture in the heat exchanger enters the spiral pipe positioned in the shell through the gas-liquid inlet pipe, when the gas-liquid mixture flows in the spiral pipe, gas and liquid in the gas-liquid mixture are layered due to different centrifugal forces, the liquid is distributed on the outer edge layer of the pipe wall of the spiral pipe, and the liquid is thrown out from small holes on the outer edge of the pipe wall of the spiral pipe under the action of the centrifugal force after layering, flows into the shell and flows out from the liquid outlet pipe at the bottom of the shell; the gas continuously rises in the spiral pipe and flows out of the gas outlet pipe at the top of the shell, so that gas-liquid separation is realized, finally recovered steam enters the steam generator, the steam recovery is realized, and the cost is saved; and the gas-liquid separator has the characteristics of good separation effect, simple structure and small volume.
The invention is further configured to: an active carbon filter screen is arranged in the gas outlet pipe.
Through adopting above-mentioned technical scheme, because centrifugal fan is at the during operation, dust in the air can get into the final heat exchanger that gets into in the centrifugal fan unavoidably, when retrieving steam, dust in the air also can get into the spiral pipe in the vapour and liquid separator, owing to be provided with the active carbon filter screen in the gas exit tube, effectual dust to in the steam carries out filtration treatment, guaranteed the gaseous cleanliness that steam got into in the steam generator through the gas exit tube, avoid dust in the steam to get into and influence its life in the steam generator.
The invention is further configured to: and a valve is arranged on the steam inlet pipe.
Through adopting above-mentioned technical scheme, can control the flow size of steam according to actual conditions.
The invention is further configured to: and a valve is arranged on the gas-liquid inlet pipe.
By adopting the technical scheme, the flow of gas and liquid can be controlled according to the actual situation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a block diagram of a control system according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a gas-liquid separator configuration in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of a separation tube structure according to an embodiment of 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. 1-4, the invention discloses a drying method of a tea seed dryer, in the specific embodiment of the invention, the dryer comprises a centrifugal fan 1, a heat exchanger 2, a drying box 3 with an opening, a steam generator 4 and a control system for controlling the wind power of the centrifugal fan 1, an air inlet is arranged on the side wall of the drying box, a heat radiating surface of the heat exchanger 2 is arranged between the air outlet end and the air inlet of the centrifugal fan 1, the heat exchanger 2 is communicated with the steam generator 4 through a steam inlet pipe 5, a sieve plate 6 is arranged inside the drying box 3, the sieve plate 6 and the bottom of the drying box 3 are arranged in a gap, the gap part forms a drying channel 7, and the air inlet is communicated with the drying channel 7; the gap between the heat exchange tubes of the heat exchanger is a radiating surface of the heat exchanger, and the centrifugal fan can blow hot air emitted by the heat exchange tubes into a drying channel of the drying box through the gap between the heat exchange tubes, so that hot air is blown in; the control system comprises a controller 100 and a plurality of temperature sensors 200, wherein a power supply end of the centrifugal fan 1 is electrically connected with the controller 100, the temperature sensors 200 are electrically connected with the controller 100 through conducting wires, and the temperature sensors 200 are equidistantly arranged on a drying channel 7 of the drying box 3 along the gas flowing direction; the method of the dryer includes the following steps: (1) uniformly placing tea seeds on a sieve plate in a drying box; (2) the steam generator continuously flows steam into the heat exchanger through the steam inlet pipe, and at the moment, the centrifugal fan is started to blow in hot gas emitted by the heat exchanger into a drying channel of the drying box so as to dry the tea seeds; (3) meanwhile, a plurality of temperature sensors on the drying channel can sense the temperature of each area in the drying channel at all times, the sensed temperature is fed back to the controller, and at the moment, the controller controls the wind power of the centrifugal fan.
Preferably: be provided with electrical heating mechanism between centrifugal fan 1's air-out end and the cooling surface of heat exchanger 2, this electrical heating mechanism includes the box and locates the heating wire in the box, and this box sets up for cavity, and this cavity communicates with centrifugal fan's air-out end and heat exchanger's cooling surface respectively, and this heating wire passes through power supply heating, has realized under the service environment that lacks steam or no steam, can direct practical heating wire heating, alright realization hot-blast production.
Preferably: through adopting above-mentioned technical scheme, because utilize centrifugal fan's theory of operation to insufflate the heat in to the stoving passageway continuously among the prior art, thereby carry out drying process to tea seed, however, the heat is to the back of insufflating of stoving passageway, the temperature of the tail end of this stoving passageway is higher than the temperature of the front end of stoving passageway all the time, cause the tea seed stoving of this stoving incasement part subregion (the front end that is the stoving passageway) to be heated inhomogeneous, the tea seed of subregion (the tail end that is the stoving passageway) can produce the burnt even, the burnt condition, thereby influence the quality and the taste of finished product tea-seed oil. In the invention, steam is introduced into the heat exchanger, the centrifugal fan blows hot air emitted by the heat exchanger into the drying channel, the temperatures of different areas in the drying channel are continuously sensed by utilizing a plurality of temperature sensors in the control system, if the temperature at the tail end of the drying channel is always higher than the temperature at the front end of the drying channel, the temperature sensed by the temperature sensors on the drying channel is fed back to the controller, at the moment, the controller controls the rotating speed of the fan blades of the centrifugal fan to reduce the wind power blown into the drying channel, so that a large amount of wind can only blow to the front end in the drying channel, and a small amount of wind blows to the tail end in the drying channel, thereby realizing the segmented drying treatment of the tea seeds in the drying box, and by adopting the design, the conditions of uneven heating and coke and paste of the tea seeds in the drying box in the drying process are avoided, and the energy consumption of the centrifugal fan is also reduced, the manufacturing cost of the tea seeds is reduced, so that the quality and the taste of the finished tea oil are also ensured. The invention has simple integral structure and low manufacturing cost.
In the specific embodiment of the invention, the steam recovery device further comprises a gas-liquid separator 8 for steam recovery, the gas-liquid separator 8 comprises a shell 50 and a separation pipe 40 positioned in the shell 50, the upper end of the shell 50 is provided with a gas outlet pipe 20, the lower end of the shell 50 is provided with a liquid outlet pipe 30, the side wall of the shell 50 is provided with a gas-liquid inlet pipe 501 communicated with the heat exchanger 2, the separation pipe 40 is a spiral pipe, the spiral pipe comprises a pipe body 10 formed by winding a pipeline in a spiral shape, one end of the pipe body 10 is communicated with the gas-liquid inlet pipe 501, the other end of the pipe body 10 is communicated with the gas outlet pipe 501, the outer edge of the pipe wall of the spiral pipe is provided with a plurality of small holes 60, and the plurality of small holes 60 are arranged at the outer edge pipe; the gas outlet end of the gas outlet pipe 20 is communicated with the steam generator 4.
By adopting the technical scheme, a gas-liquid mixture in the heat exchanger enters the spiral pipe positioned in the shell through the gas-liquid inlet pipe, when the gas-liquid mixture flows in the spiral pipe, gas and liquid in the gas-liquid mixture are layered due to different centrifugal forces, the liquid is distributed on the outer edge layer of the pipe wall of the spiral pipe, and the liquid is thrown out from small holes on the outer edge of the pipe wall of the spiral pipe under the action of the centrifugal force after layering, flows into the shell and flows out from the liquid outlet pipe at the bottom of the shell; the gas continuously rises in the spiral pipe and flows out of the gas outlet pipe at the top of the shell, so that gas-liquid separation is realized, finally recovered steam enters the steam generator, the steam recovery is realized, and the cost is saved; and the gas-liquid separator has the characteristics of good separation effect, simple structure and small volume.
In the present embodiment, an activated carbon filter (not shown) is disposed in the gas outlet pipe 20.
Through adopting above-mentioned technical scheme, because centrifugal fan is at the during operation, dust in the air can get into the final heat exchanger that gets into in the centrifugal fan unavoidably, when retrieving steam, dust in the air also can get into the spiral pipe in the vapour and liquid separator, owing to be provided with the active carbon filter screen in the gas exit tube, effectual dust to in the steam carries out filtration treatment, guaranteed the gaseous cleanliness that steam got into in the steam generator through the gas exit tube, avoid dust in the steam to get into and influence its life in the steam generator.
In the present embodiment, a valve 502 is disposed on the steam inlet pipe 5.
Through adopting above-mentioned technical scheme, can control the flow size of steam according to actual conditions.
In the embodiment of the present invention, a valve 5010 is disposed on the gas-liquid inlet pipe 501.
By adopting the technical scheme, the flow of gas and liquid can be controlled according to the actual situation.
In the present embodiment, the screen plate 6 is provided with a filter cloth (not shown).
By adopting the technical scheme, the tea seeds are prevented from falling into the through holes on the sieve plate when being placed on the sieve plate for drying treatment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A drying method of a tea seed dryer is characterized in that: the dryer comprises a centrifugal fan, a heat exchanger, a drying box with an opening, a steam generator and a control system for controlling the wind power of the centrifugal fan, wherein an air inlet is formed in the side wall of the drying box, a heat dissipation surface of the heat exchanger is arranged between the air outlet end and the air inlet of the centrifugal fan, the heat exchanger is communicated with the steam generator through a steam inlet pipe, a sieve plate is arranged inside the drying box, the sieve plate and the bottom of the drying box are arranged in a clearance, the clearance part forms a drying channel, and the air inlet is communicated with the drying channel; the control system comprises a controller and a plurality of temperature sensors, wherein a power supply end of the centrifugal fan is electrically connected with the controller, the temperature sensors are electrically connected with the controller through leads, and the temperature sensors are equidistantly arranged on a drying channel of the drying box along the gas flowing direction; the method of the dryer includes the following steps: (1) uniformly placing tea seeds on a sieve plate in a drying box; (2) the steam generator continuously flows steam into the heat exchanger through the steam inlet pipe, and at the moment, the centrifugal fan is started to blow in hot gas emitted by the heat exchanger into a drying channel of the drying box so as to dry the tea seeds; (3) meanwhile, a plurality of temperature sensors positioned on the drying channel can sense the temperature of each area in the drying channel at all times, the sensed temperature is fed back to the controller, and at the moment, the controller controls the wind power of the centrifugal fan; the steam recovery device comprises a shell and a separation pipe positioned in the shell, wherein a gas outlet pipe is arranged at the upper end of the shell, a liquid outlet pipe is arranged at the lower end of the shell, a gas-liquid inlet pipe communicated with a heat exchanger is arranged on the side wall of the shell, the separation pipe is a spiral pipe, the spiral pipe comprises a pipe body formed by winding a pipeline in a spiral shape, one end of the pipe body is communicated with the gas-liquid inlet pipe, the other end of the pipe body is communicated with the gas outlet pipe, a plurality of small holes are formed in the outer edge of the pipe wall of the spiral pipe, and the small holes are formed in the outer edge pipe wall of the upper half part of the pipe body; and the gas outlet end of the gas outlet pipe is communicated with the steam generator.
2. The drying method of the tea seed dryer according to claim 1, wherein: an electric heating mechanism is arranged between the air outlet end of the centrifugal fan and the heat dissipation surface of the heat exchanger.
3. The drying method of the tea seed dryer according to claim 1, wherein: an active carbon filter screen is arranged in the gas outlet pipe.
4. The drying method of the tea seed dryer according to claim 1, wherein: and a valve is arranged on the steam inlet pipe.
5. The drying method of the tea seed dryer according to claim 1, wherein: and a valve is arranged on the gas-liquid inlet pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711426106.8A CN108168228B (en) | 2017-12-26 | 2017-12-26 | Drying method of tea seed dryer |
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| CN201711426106.8A CN108168228B (en) | 2017-12-26 | 2017-12-26 | Drying method of tea seed dryer |
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| CN108168228A CN108168228A (en) | 2018-06-15 |
| CN108168228B true CN108168228B (en) | 2020-06-02 |
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| CN109331497A (en) * | 2018-10-29 | 2019-02-15 | 佛山六奇食品科技有限公司 | A kind of full powder extraction system of mesona |
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| JP3260523B2 (en) * | 1993-10-25 | 2002-02-25 | 株式会社大坪鉄工 | Nori production equipment |
| CN201583072U (en) * | 2010-01-08 | 2010-09-15 | 珠海格力电器股份有限公司 | Gas-liquid separator |
| CN201781944U (en) * | 2010-08-26 | 2011-04-06 | 王宁州 | Multi-functional dryer |
| CN103225948A (en) * | 2013-04-26 | 2013-07-31 | 陈富强 | Cassava dryer |
| CN103783173B (en) * | 2013-12-24 | 2016-03-23 | 靳职雄 | A kind of withering trough withering and cure functions |
| CN204806841U (en) * | 2015-06-05 | 2015-11-25 | 象山商博电子商务有限公司 | Dyestuff drying device |
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