CN115067398A - Novel normal temperature drying equipment is used to tealeaves - Google Patents
Novel normal temperature drying equipment is used to tealeaves Download PDFInfo
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Abstract
The invention discloses novel normal-temperature drying equipment for tea leaves, which comprises a closed drying room, a normal-temperature heat pump unit, a dynamic spiral conveying line and a microcomputer control system, wherein the dynamic spiral conveying line is arranged in the drying room, a feeding section and a discharging section of the dynamic spiral conveying line respectively extend out of the wall body of the drying room, the normal-temperature heat pump unit is used for producing hot air and then inputting the hot air into the drying room through a circulating fan unit, the feeding section and the discharging section of the dynamic spiral conveying line are respectively provided with a moisture detector and a temperature and humidity sensor which are respectively connected with the microcomputer control system, and the microcomputer control system is used for adjusting the conveying speed of the dynamic spiral conveying line and the input heat of the normal-temperature heat pump unit according to the temperature and humidity collected in the drying room and the moisture content of materials at the feeding section and the discharging section. The invention transmits the detection data into the microcomputer control system in real time to carry out accurate control on the drying speed, the control accuracy of the water content can reach +/-1% of the water content, and the accuracy of the drying temperature can be controlled at +/-1 ℃.
Description
Technical Field
The invention relates to the technical field of tea drying, in particular to novel normal-temperature drying equipment for tea.
Background
At present, a chain plate dryer or a drying room is usually adopted for drying tea leaves, the whole system is an open system, the drying efficiency and the drying effect are greatly influenced by seasons and weather, particularly in summer and rainy days, the moisture content of air is high (the natural humidity of the environment is 50% -90%), the moisture in the tea leaves can be taken away only by improving the drying temperature, so that the traditional drying temperature is generally 90 ℃ -120 ℃, a steaming and boiling layer can be formed on the high-humidity high-temperature air and the surfaces of the tea leaves, the aroma loss, excessive oxidation, the freshness reduction and the physical and chemical component loss of the tea leaves are caused, the utilization rate of the heat energy of the open system is extremely low, the current situation of high energy consumption and low efficiency is caused, and the bottleneck process for limiting the processing efficiency of the tea leaves is also caused; traditional link joint drying-machine and stoving room need be equipped with the boiler usually and carry out air heating, and toxic gas such as carbon monoxide that boiler combustion waste and in-process produced can cause ecological environment's destruction, and this has also restricted tea processing productivity.
Disclosure of Invention
In order to solve the technical problems, the invention provides novel normal-temperature drying equipment for tea leaves, which adopts a low-temperature and closed environment to quickly dehydrate and dry the tea leaves in a stable temperature and humidity environment and keep the inherent physical and chemical components and taste of the tea leaves.
The adopted technical scheme is as follows:
a novel normal temperature drying device for tea leaves comprises a closed drying room, a normal temperature heat pump unit, a dynamic spiral conveying line and a microcomputer control system, wherein the dynamic spiral conveying line is arranged in the drying room, and is connected with the microcomputer control system in a control way, the feeding section and the discharging section of the dynamic spiral conveying line respectively extend out of the wall body of the drying room, the normal temperature heat pump unit inputs the prepared hot air into the drying room through the circulating fan unit, the feeding section and the discharging section of the dynamic spiral conveying line are respectively provided with a moisture detector and a temperature and humidity sensor, the system is respectively connected with the microcomputer control system, and the microcomputer control system adaptively adjusts the conveying speed of the dynamic spiral conveying line and the input heat of the normal-temperature heat pump unit according to the collected temperature and humidity in the drying room and the water content of materials at the feeding section and the discharging section.
Furthermore, a heat control module is arranged in the microcomputer control system and is used for controlling the heat quantity according to the heat radiation quantity Q of the drying room 2 The wet material of the dynamic spiral conveying line absorbs heat Q 1 And water evaporation and absorption heat Q 3 Controlling the drying heat load of the normal-temperature heat pump unit, wherein the heat control module is used for calculating the required drying heat load Q General assembly The algorithm of (1) is as follows:
Q general assembly ＝Q 1 +Q 2 +Q 3 (kW.h)
Wherein Q is 1 ＝C*M*Δt
Q 2 ＝αFK(t n -t wn )·h/1000
Q 3 ＝G2·γ/3600
In the above formula: c-specific heat capacity of tea;
delta t-the change value of the temperature inside and outside the drying room;
m-wet tea quality;
the alpha-envelope temperature difference correction coefficient is 1;
f-area of the building envelope (m) 2 )；
The heat transfer coefficient of the K-enclosure structure can be simplified to K ═ lambda/d (polyurethane lambda ═ 0.024W/m ℃) according to actual conditions, lambda is the heat conductivity coefficient [ W/(m.K) ] of the maintenance structure material, and d is the maintenance structure thickness (m);
t n -indoor design temperature (° c);
t wn -outdoor ambient temperature (° c);
g2-moisture (dewatering amount) (kg) of the wet material;
gamma-latent heat of vaporization of water (kj/kg);
h-design drying time (h).
Further preferably, the equipment still includes evaporimeter condensation system of hydrofuging, its with after the normal atmospheric temperature heat pump set integration with the drying room is connected, is used for right damp and hot air in the drying room carries out the condensation dehumidification and handles, discharges the comdenstion water outside the drying room, the hot-air after the dehumidification passes through pipeline formation inner loop and gets into in the drying room.
Preferably, the dynamic spiral conveying line comprises a driving motor, a vertical rotary drum, a turning chain plate belt, a spiral guide rail and a support, the driving motor is connected with the microcomputer control system, the spiral guide rail is arranged on the support in a spiral climbing mode, the turning chain plate belt is arranged along the spiral guide rail and forms a closed-loop conveying belt structure, a discharging section of the turning chain plate belt is arranged at the upper part of the support, and a feeding section of the turning chain plate belt is arranged at the lower part of the support; the outer circumference of the vertical rotary drum is provided with a plurality of driving teeth arranged along a bus of the vertical rotary drum, the driving teeth are in meshing driving connection with the inner side of the turning chain plate belt, and the driving motor is in driving connection with the vertical rotary drum and is used for driving the vertical rotary drum to rotate.
Preferably, each layer of the turning chain plate belt on the dynamic spiral conveying line is provided with an online moisture meter, each online moisture meter is connected with the microcomputer control system, and a heat control module in the microcomputer control system calculates the dynamic state according to the moisture content of the materials on each layer of the turning chain plate beltHeat quantity Q required by all materials on spiral conveying line 1 And Q 3 And controlling the output heat of the normal temperature heat pump unit.
Preferably, the online moisture meter is an infrared online moisture meter.
Preferably, the conveying speed of the dynamic spiral conveying line is controlled to be 2-7 m/min, the humidity of air entering the drying room is controlled to be less than 30%, and the adjusting range of the drying temperature on the dynamic spiral conveying line is controlled to be 35-75 ℃.
Further preferably, the circulating fan set comprises a plurality of circulating fans arranged up and down and arranged on one side of the dynamic spiral conveying line, and the microcomputer control system is electrically connected with each circulating fan and used for independently controlling the air output of each circulating fan.
The technical scheme of the invention has the following advantages:
A. according to the invention, a closed hot air circulating system is formed by the normal temperature heat pump unit and the drying room, acquired data are transmitted into the microcomputer control system in real time through the temperature and humidity sensor and the dynamic moisture meter which are arranged at the feeding and discharging sections of the dynamic spiral conveying line in the drying process, and the required drying heat load is calculated and accurately controlled in real time, so that the control precision of the water content of the dried tea leaves reaches +/-1%, and the drying temperature precision is controlled at +/-1 ℃.
B. According to the invention, the normal-temperature heat pump unit is combined with the evaporator condensation dehumidification system, the normal-temperature heat pump unit is used for heating air, moisture contained in wet air in the drying room is condensed and removed by the evaporator condensation dehumidification system, and then dry air enters the next drying cycle, so that waste heat is further recycled to heat materials.
C. The water removal amount of the tea in the equipment can be designed and measured on line, infrared online moisture measuring instruments are arranged at a tea inlet of the equipment, each layer of the dynamic spiral conveying line in the drying room and the discharging section, the speed of the dynamic spiral conveying line and the air volume of the circulating fan set can be regulated and controlled according to the moisture change of materials at each layer, and the control precision of the water content of the tea output at the discharging section is higher.
D. The equipment is not influenced by weather, the humidity of air entering the drying room is always controlled below 30%, the drying temperature can be adjusted within the range of 35-75 ℃ according to the requirements of the tea processing technology, the drying speed is high, and the temperature is controllable.
E. According to the invention, an autonomous heating curve control is adopted in combination with a drying heat load algorithm in a heat control module, the heat required by the material is automatically calculated through the heat control module, the drying speed and the heat load value are automatically regulated and controlled, the optimal drying effect is achieved, manual intervention is not required, one person can simultaneously watch a plurality of drying rooms, and 3-5 workers can be saved compared with the traditional method.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings which are needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained from the drawings without inventive labor to those skilled in the art.
FIG. 1 is a floor plan of the apparatus provided by the present invention;
FIG. 2 is a front view of the dynamic spiral conveyor line shown in FIG. 1;
FIG. 3 is a top view of FIG. 2;
fig. 4 is a schematic diagram of drying in a drying room.
The identification symbols provided in the figures are illustrated as follows:
1-drying room; 2-a normal temperature heat pump unit; 3-a dynamic spiral conveying line, 31-a driving motor, 32-a vertical rotary drum, 33-a turning chain plate belt, 34-a spiral guide rail, 35-a support and 321-a driving gear; 4-microcomputer control system; and 5-a circulating fan set.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the invention provides novel normal temperature drying equipment for tea, the equipment comprises a closed drying room 1, a normal temperature heat pump unit 2, a dynamic spiral conveying line 3 and a microcomputer control system 4, the dynamic spiral conveying line 3 is arranged in the drying room 1, a feeding section 3a and a discharging section 3b of the dynamic spiral conveying line 3 respectively extend out of the wall of the drying room 1, the normal temperature heat pump unit 2 inputs prepared hot air into the drying room 1 through a circulating fan unit 5, the feeding section 3a and the discharging section 3b of the dynamic spiral conveying line 3 are respectively provided with a moisture detector and a temperature and humidity sensor (not shown in the figure), the system is respectively connected with a microcomputer control system 4, and the microcomputer control system 4 adjusts the conveying speed of the dynamic spiral conveying line 3 and the heat input by the normal-temperature heat pump unit 2 according to the temperature and humidity collected in the drying room 1 and the water content of the materials at the feeding section and the discharging section 3 b. The invention utilizes the normal temperature heat pump unit 2, adopts the reverse Carnot cycle principle to design, as shown in figure 4, utilizes a small part of electric quantity to drive the compressor to do work, thereby carrying most of heat in outdoor air into the drying room 1, raising the temperature of the drying room 1 and leading the temperature of the drying room 1 to reach the target temperature (lower than 75 ℃). In addition, still set up evaporimeter condensation system of hydrofuging in the complete equipment, including evaporimeter and condenser, it is connected with drying room 1 after integrating with normal atmospheric temperature heat pump set 2 for carry out condensation dehumidification to the damp and hot air in drying room 1 and handle, with the comdenstion water discharge drying room outside, the hot-air after the dehumidification forms the inner loop through the pipeline and gets into in drying room 1.
As shown in fig. 4, the normal temperature heat pump unit utilizes a refrigerant to be compressed by a compressor to become a normal temperature high pressure gas, the gas enters a condenser to release heat, the heat released by the condenser is sent to a drying room by a circulating fan unit, and the air in the drying room is heated (the maximum temperature can reach 75 ℃). The moisture in the tea leaves can be gradually evaporated along with the rise of the air temperature, then the moisture is discharged by the evaporator condensation and moisture discharge system, and the dehumidified hot air continuously circulates to enter the drying room, so that the effect of drying the tea leaves is achieved, and the energy-saving effect is obvious.
The invention is provided with a heat control module in a microcomputer control system, can self-adaptively adjust the drying temperature according to the temperature and humidity of the drying room, the water content of materials on the internal dynamic spiral conveying line 3, the water content of a drying target and other parameters, and can self-adaptively adjust the drying temperature according to the heat dissipation Q of the drying room 2 Wet material absorption heat Q of dynamic spiral conveying line 1 And water evaporation and absorption heat Q 3 Adjusting the drying heat load of the normal temperature heat pump unit, wherein the heat control module is used for calculating the required drying heat load Q General assembly The algorithm of (1) is as follows:
Q general assembly ＝Q 1 +Q 2 +Q 3 (kW.h)
Wherein Q is 1 ＝C*M*Δt
Q 2 ＝αFK(t n -t wn )·h/1000
Q 3 ＝G2·γ/3600
In the above formula: c-specific heat capacity of tea;
delta t-the change value of the temperature inside and outside the drying room;
m-wet tea quality;
the temperature difference correction coefficient of the alpha-drying room enclosure structure is 1;
f-area of enclosure (m) of drying room 2 )；
The heat transfer coefficient of the K-enclosure structure of the drying room can be simplified into K ═ lambda/d (polyurethane λ ═ 0.024W/m ℃) according to actual conditions, wherein lambda is the heat conductivity coefficient [ W/(m · K) ] of the maintenance structure material, and d is the maintenance structure thickness (m);
t n -indoor design temperature (° c);
t wn -outdoor ambient temperature (° c);
g2-moisture (dewatering amount) (kg) of the wet material;
gamma-latent heat of vaporization of water (kj/kg);
h-design drying time (h).
The following table is an example of design parameters to calculate the amount of drying heat required.
The heat control module automatically calculates the drying heat load Q required by the drying room according to the parameter values given in the table General assembly For example, setting target drying time and drying quality, the microcomputer control system calculates and adjusts the required drying heat load in real time according to parameters such as tea water content, weight and the like. The specific calculation process is as follows:
(1) heating tea water to 35 deg.C 1
Q 1 ＝C*M*Δt
Specific heat capacity of water 0.001167kW.h/(kg. ℃ C.)
Specific heat of water is 4.2X 10 3 J/(kg-DEG C) is approximately equal to 1 kcal/(kg-DEG C), and the specific heat capacity of the tea with the 20 percent water content of the relevant data is 1.63 kJ/(kg-DEG C) and y is approximately equal to 0.39 kcal/(kg-DEG C);
dehydration amount 105kg
The lowest temperature of the outdoor environment is 10 DEG C
Heat quantity required for wet material temp. rising Q 1 ＝0.39*1000*25/860＝11.3kW.h
(2) Heat dissipation of maintenance structure (drying room)
Q 2 ＝αFK(t n -t wn )·h/1000
In the formula: q 2 ＝62.5*0.024*14*1/1000＝0.014KW.H
(3) The heat (Q3) absorbed by the evaporation of water from the material should be calculated as follows:
Q 3 ＝G2·γ/3600
wherein gamma is latent heat of vaporization (kj/kg) of water, and latent heat of vaporization corresponding to indoor design temperature (2422.8 at 30 ℃ C. by looking at latent heat of vaporization table of water).
Q 3 ＝105*2433/3600＝70KW.H
Q General assembly 11.3+0.014+70 ≈ 82 kw heat.
Calculating the total heat Q required by the tea drying operation parameters in the table by a heat control module General assembly To make the microcomputer control systemThe required heat in the drying room is accurately controlled, so that the tea leaves are dried more stably. Certainly, when the tea leaves in the drying room have parameter changes such as spreading material quantity or feeding water content, the microcomputer control system adjusts heat input according to real-time calculation results, and then accurate drying control of tea leaf quality is achieved.
The equipment has good automation control precision and intelligent operation performance, adopts a high-precision electronic temperature and humidity sensor, has the advantages of ultrafast response, strong anti-interference capability, compact structure, extremely low power consumption, ultra-long transmission distance and the like, and has higher data precision and better operation performance of a control system.
As shown in fig. 2 and fig. 3, the dynamic spiral conveying line 3 adopted in the present invention is a spiral climbing structure, and includes a driving motor 31, a vertical rotating drum 32, a turning chain plate belt 33, a spiral guide rail 34 and a support 35, the spiral guide rail 34 is arranged on the support 35 in a spiral climbing manner, the turning chain plate belt 33 is arranged along the spiral guide rail 34 and forms a closed-loop conveying line structure, the discharging section 3b of the turning chain plate belt 33 is arranged on the upper portion of the support 35, and the feeding section 3a thereof is arranged on the lower portion of the support 35; the outer circumference of the vertical rotary drum 32 is provided with a plurality of driving teeth 321 arranged along the bus, the driving teeth 321 are in meshing driving connection with the inner side of the turning chain plate belt 33, the driving motor 31 is in driving connection with the vertical rotary drum 32, the driving motor 31 can drive the vertical rotary drum 32 to rotate through direct connection or chain wheel transmission, the driving teeth arranged at equal intervals on the outer side surface of the vertical rotary drum 32 drive the turning chain plate belt 33 to synchronously convey, and the turning chain plate belt is a stainless steel spiral turning belt. In order to further dynamically monitor the water content of the tea leaves in each layer, an infrared online water content tester is respectively arranged above each layer of turning chain plate belt 33 and is respectively connected with a microcomputer control system 4 to collect the water content data of the tea leaves in each layer, and a heat control module in the microcomputer control system 4 calculates the heat Q required by all the materials on the dynamic spiral conveying line 3 in real time according to the given formula according to the water content condition of the materials on each layer of turning chain plate belt 33 1 And Q 3 Calculating the water content of each layer of material one by one to obtain all the water contentHeat of mass Q of layer 1 And Q 3 Thereby controlling the output heat of the normal temperature heat pump unit 2.
In the invention, the conveying speed of the dynamic spiral conveying line 3 is preferably controlled to be 2-7 m/min, the humidity of air entering the drying room 1 is controlled to be not higher than 30%, and the adjusting range of the drying temperature on the dynamic spiral conveying line 3 is controlled to be 35-75 ℃. The conveying line adopts dynamic conveying and detection, the bottom layer is used for feeding, the top layer is used for discharging, the layer height of tea leaves on the stainless steel spiral turning belt is set according to the drying water removal amount, the feeding end is provided with an auxiliary speed reducer, the driving motor and the auxiliary speed reducer above the conveying line both adopt variable frequency motors, and the variable frequency speed regulation is respectively linked with a microcomputer control system. This design mode is more space-saving, compares tealeaves and hot-blast contact surface bigger with traditional link joint structure, and unit interval dewatering speed is higher, and holistic tealeaves treatment effeciency is higher.
The invention can control the air quantity needed by each layer of materials, the circulating fan set 5 is composed of a plurality of circulating fans which are arranged up and down and are arranged at one side of the dynamic spiral conveying line 3 and exhaust the materials on each layer, and the microcomputer control system 4 is electrically connected with each circulating fan and can independently control the air quantity of each circulating fan.
After the tea leaves are dried by adopting the equipment disclosed by the invention, the tea leaves are less oxidized, the color and luster protection is better, the aroma and the taste of the tea leaves are more preserved, the tea leaves are more distinctive, the physicochemical components are more preserved, the taste is richer, and the quality of the tea leaves is obviously improved.
The following table compares the drying effect of the traditional chain plate dryer and the drying effect of the equipment of the invention on the same tea.
Sensory evaluation comparison table:
the tea leaves treated by the drying equipment provided by the invention are fresh and cool in aroma, the unique sweet flower aroma of the variety is reserved, the taste is rich, the tea leaves are sweet and mellow, the convergence is strong, and the intrinsic quality and the sensory quality of the tea leaves are obviously improved compared with those of the tea leaves dried by a traditional chain plate dryer.
Equipment use economics analysis controls:
as can be seen from the above table, the equipment of the invention has great advantages in terms of energy consumption, automation degree, labor cost, annual use cost and the like.
Nothing disclosed in this application is applicable to the prior art.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (8)
1. A novel normal temperature drying device for tea is characterized by comprising a closed drying room (1), a normal temperature heat pump unit (2), a dynamic spiral conveying line (3) and a microcomputer control system (4), wherein the dynamic spiral conveying line (3) is arranged in the drying room (1) and is in control connection with the microcomputer control system (4), a feeding section and a discharging section of the dynamic spiral conveying line (3) respectively extend out of the wall body of the drying room (1), the normal temperature heat pump unit (2) inputs prepared hot air into the drying room (1) through a circulating fan unit (5), a feeding section (3a) and a discharging section (3b) of the dynamic spiral conveying line (3) are respectively provided with a moisture detector and a temperature and humidity sensor which are respectively connected with the microcomputer control system (4), the microcomputer control system (4) adjusts the conveying speed of the dynamic spiral conveying line (3) and the input heat of the normal-temperature heat pump unit (2) in a self-adaptive mode according to the temperature and humidity collected in the drying room (1) and the water content of materials at the feeding section (3a) and the discharging section (3 b).
2. A novel ambient temperature drying equipment for tea according to claim 1, characterized in that the microcomputer control system (4) is provided with a heat control module which is based on the heat dissipation Q of the drying room (1) 2 The wet material of the dynamic spiral conveying line (3) absorbs heat Q 1 And water evaporation and absorption heat Q 3 Controlling the drying heat load of the normal temperature heat pump unit (2), wherein the heat control module is used for calculating the required drying heat load Q General assembly The algorithm of (1) is as follows:
Q general (1) ＝Q 1 +Q 2 +Q 3 (kW.h)
Wherein Q 1 ＝C*M*Δt
Q 2 ＝αFK(t n -t wn )·h/1000
Q 3 ＝G2·γ/3600
In the above formula: c-specific heat capacity of tea;
delta t-the change value of the temperature inside and outside the drying room;
m-wet tea quality;
the alpha-envelope temperature difference correction coefficient is 1;
f-area of the enclosure (m) 2 )；
The heat transfer coefficient of the K-enclosure structure can be simplified to K ═ lambda/d (polyurethane lambda ═ 0.024W/m ℃) according to actual conditions, lambda is the heat conductivity coefficient [ W/(m.K) ] of the maintenance structure material, and d is the maintenance structure thickness (m);
t n -indoor design temperature (° c);
t wn -outdoor ambient temperature (° c);
g2-moisture (dewatering amount) (kg) of the wet material;
gamma-latent heat of vaporization of water (kj/kg);
h-design drying time (h).
3. The novel normal temperature drying equipment for tea leaves according to claim 2, characterized in that the equipment further comprises an evaporator condensation dehumidification system, which is integrated with the normal temperature heat pump unit (2) and then connected with the drying room (1) for carrying out condensation dehumidification treatment on the hot and humid air in the drying room (1) and discharging the condensed water out of the drying room (1), wherein the dehumidified hot air forms an internal circulation through a pipeline and enters the drying room (1).
4. The novel normal temperature drying equipment for tea leaves as claimed in claim 3, wherein the dynamic spiral conveying line (3) comprises a driving motor (31), a vertical rotary drum (32), a turning chain plate belt (33), a spiral guide rail (34) and a support (35), the driving motor (31) is connected with the microcomputer control system (4), the spiral guide rail (34) is arranged on the support (35) in a spiral climbing manner, the turning chain plate belt (33) is arranged along the spiral guide rail (34) and forms a closed-loop conveying belt structure, a discharging section of the turning chain plate belt (33) is arranged at the upper part of the support (35), and a feeding section of the turning chain plate belt (33) is arranged at the lower part of the support (35); the outer circumference of the vertical rotary drum (32) is provided with a plurality of driving teeth (321) arranged along the generatrix, the driving teeth (321) are in meshing driving connection with the inner side of the turning chain plate belt (33), and the driving motor (31) is in driving connection with the vertical rotary drum (32) and is used for driving the vertical rotary drum (32) to rotate.
5. The novel ambient temperature drying equipment for tea leaves as claimed in claim 4, wherein each layer of the turning chain plate belt (33) on the dynamic spiral conveying line (3) is provided with an online moisture meter, and each online moisture meter is respectively connected with the microcomputer control systemThe system (4) is connected, and a heat control module in the microcomputer control system (4) calculates the heat Q required by all materials on the dynamic spiral conveying line (3) according to the water content of the materials on the turning chain plate belt (33) on each layer 1 And Q 3 And controlling the output heat of the normal temperature heat pump unit (2).
6. The novel ambient temperature drying equipment for tea leaves according to claim 5, wherein the online moisture meter is an infrared online moisture meter.
7. The novel normal temperature drying equipment for the tea leaves as claimed in any one of claims 1 to 6, wherein the conveying speed of the dynamic spiral conveying line (3) is controlled to be 2m/min to 7m/min, the humidity of air entering the drying room (1) is controlled to be less than 30%, and the adjusting range of the drying temperature on the dynamic spiral conveying line (3) is controlled to be 35 ℃ to 75 ℃.
8. The novel normal temperature drying equipment for tea leaves as claimed in claim 7, wherein the circulating fan set (5) is composed of a plurality of circulating fans arranged up and down, and arranged on one side of the dynamic spiral conveying line (3), and the microcomputer control system (4) is electrically connected with each circulating fan and used for independently controlling the air output of each circulating fan.
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| CN202210785124.XA CN115067398A (en) | 2022-07-05 | 2022-07-05 | Novel normal temperature drying equipment is used to tealeaves |
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| CN202210785124.XA CN115067398A (en) | 2022-07-05 | 2022-07-05 | Novel normal temperature drying equipment is used to tealeaves |
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