阅读说明：本技术 一种茶叶气垫隔离式干燥工艺 (Air cushion isolated drying process for tea leaves ) 是由 武石磊 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种茶叶气垫隔离式干燥工艺,属于茶叶制备领域,一种茶叶气垫隔离式干燥工艺,通过对隔气球进行预处理,得到质轻的隔气垫,并将茶叶铺设在其表面进行烘烤,后通过对烘烤斗内的热空气进行循环,可以在隔气垫下方形成气垫层,可以对隔气垫起到承托作用,使茶叶与隔气垫一同处于悬空状态,相较于现有技术,有效避免了茶叶直接为双层烤板接触,进而有效避免茶叶被烤糊的情况发生,配合对热空气流通速度的控制,使隔气垫不断发生上下起伏的颠簸情况,实现对茶叶的翻动,相较于现有技术中人工翻动,显著提高茶叶烘干效率,并且有效降低劳动量。(The invention discloses an air cushion isolated drying process for tea, belonging to the field of tea preparation, the light air isolating cushion is obtained by pretreating the air isolating ball, the tea leaves are laid on the surface of the air isolating ball for baking, and then hot air in the baking hopper is circulated, an air cushion layer can be formed below the air isolation cushion, which can support the air isolation cushion, so that the tea leaves and the air isolation cushion are in a suspended state together, compared with the prior art, the tea leaves are effectively prevented from being directly contacted by a double-layer baking plate, thereby effectively avoiding the situation that the tea leaves are burnt, ensuring that the air isolating cushion continuously generates the up-and-down fluctuating bumping situation by matching with the control of the hot air circulation speed, realize stirring to tealeaves, compare in the manual work among the prior art and stir, show improvement tealeaves drying efficiency to effectively reduce the amount of labour.)

1. An air cushion isolated drying process for tea leaves is characterized in that: the method comprises the following steps:

s1, firstly, paving a bamboo cushion layer (4) on the baking bucket, and then placing a gas-isolating cushion obtained by preprocessing a gas-isolating balloon (5) on the bamboo cushion layer (4);

s2, laying tea leaves on an air isolation pad, and placing ignited charcoal at the bottom of a baking bucket for baking;

s3, filling hot air in the baking bucket into the middle of the baking bucket through an air pump, so that an air cushion layer is formed in the middle of the baking bucket, and supporting an air isolating cushion under the action of the air cushion layer so that the tea leaves and the air isolating cushion are in a suspended state;

s4, continuously adjusting the circulation speed of hot air to change the thickness of the air cushion layer and drive the tea leaves on the air isolating cushion to turn over;

s5, baking for 30-60min, then finishing baking, standing and cooling, and then finishing drying.

2. The tea air cushion isolation type drying process of claim 1, wherein: the distance between the charcoal and the tea is 25-50cm, and the temperature around the tea is controlled not to be higher than 70 ℃ during baking.

3. The tea air cushion isolation type drying process of claim 1, wherein: the baking hopper comprises a hopper body (1), a plurality of uniformly distributed air guide pipes (2) with air pumps are fixedly connected to the outer end of the hopper body (1), and a double-layer baking plate (3) is fixedly connected to the middle of the hopper body (1).

4. The tea air cushion isolation type drying process of claim 3, wherein: the hopper body (1) is of a structure with two large ends and a small middle part, the distance between the double-layer baking plate (3) and the bottom of the hopper body (1) is not more than 50cm, and the bamboo cushion layer (4) is woven by bamboo strips.

5. The tea air cushion isolation type drying process of claim 1, wherein: the double-layer baking plate (3) comprises a bottom sealing plate (31) and an upper air plate (32) fixedly connected to the bottom sealing plate (31), and the air duct (2) is communicated with the space between the bottom sealing plate (31) and the upper air plate (32).

6. The tea air cushion isolation drying process of claim 5, wherein: the bottom sealing plate (31) is of a ferromagnetic structure, and the upper air plate (32) is of a porous structure.

7. The tea air cushion isolation type drying process of claim 1, wherein: the outer end of the air isolating ball (5) is wrapped with a hot melt layer (51), the interior of the air isolating ball (5) is filled with a mixture of magnetic powder and iron powder, and the volume mixing ratio of the magnetic powder to the iron powder is 2-5: 1.

8. The tea air cushion isolation type drying process of claim 1, wherein: the air isolating balloon (5) is of a light sealed heat-resistant structure, and the filling amount of the magnetic powder and the iron powder is not more than 1/10 of the inner volume of the air isolating balloon (5).

9. The tea air cushion isolation drying process of claim 8, wherein: the pretreatment of the air isolation balloon (5) is as follows:

firstly, uniformly paving a plurality of air separation balloons (5) on a double-layer baking plate (3), and enabling two adjacent air separation balloons (5) to be in contact with each other;

then baking the double-layer baking plate (3) by using charcoal to slightly melt the surfaces of the air isolating balloons (5) and bond the air isolating balloons with each other, removing the charcoal, and cooling and solidifying the charcoal to form an air isolating cushion which is matched with the surface shape of the double-layer baking plate (3).

10. The tea air cushion isolation drying process of claim 9, wherein: the changing interval of the two different circulation speeds of the hot air in the step S4 is not more than 2 min.

Technical Field

The invention relates to the field of tea preparation, in particular to an air cushion isolation type drying process for tea.

Background

Tea, commonly known as tea, generally comprises the leaves and shoots of the tea plant. Distinguished tea, cashew (ji a (a);), tea, (chu a (n)). The tea leaf components include catechin, cholestenone, caffeine, inositol, folic acid, and pantothenic acid, and are beneficial for health. A tea beverage made of tea leaves is one of three major beverages in the world.

And (3) drying: once the tea is twisted, the water is evaporated, which is called drying. According to the mode, the tea leaves are dried and divided into: drying on a stove, drying by a hand-operated dryer and drying by a self-propelled dryer.

When tealeaves volume is less, generally choose the drying method who dries on the stove for use, but in this mode, when toasting, because tealeaves direct with toast the board contact, lead to contact department high temperature, tealeaves and take place the condition emergence that the part is burnt by the roast, therefore need constantly manually turn tealeaves, lead to staff's work load great, influence the drying efficiency of tealeaves.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an air cushion isolation type drying process for tea leaves, which comprises the steps of preprocessing an air isolating ball to obtain a light air isolating cushion, paving the tea leaves on the surface of the air isolating cushion for baking, circulating hot air in a baking hopper to form an air cushion layer below the air isolating cushion, and supporting the air isolating cushion to enable the tea leaves and the air isolating cushion to be in a suspended state.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

An air cushion isolated drying process for tea leaves comprises the following steps:

s1, firstly, paving a bamboo cushion layer on the baking bucket, and then placing a gas-isolating cushion obtained by pretreating a gas-isolating ball on the bamboo cushion layer;

s2, laying tea leaves on an air isolation pad, and placing ignited charcoal at the bottom of a baking bucket for baking;

s3, filling hot air in the baking bucket into the middle of the baking bucket through an air pump, so that an air cushion layer is formed in the middle of the baking bucket, and supporting an air isolating cushion under the action of the air cushion layer so that the tea leaves and the air isolating cushion are in a suspended state;

s4, continuously adjusting the circulation speed of hot air to change the thickness of the air cushion layer and drive the tea leaves on the air isolating cushion to turn over;

s5, baking for 30-60min, then finishing baking, standing and cooling, and then finishing drying.

Furthermore, the distance between the charcoal and the tea leaves is 25-50cm, the tea leaves are easily burnt due to overhigh temperature caused by too close distance, the peripheral temperature of the tea leaves is controlled not to be higher than 70 ℃ during baking, the baking efficiency is influenced due to overlow temperature, and the tea leaves are easily burnt or scorched due to overhigh temperature.

Further, the baking hopper comprises a hopper body, a plurality of air guide pipes which are uniformly distributed and provided with air pumps are fixedly connected to the outer end of the hopper body, hot air is circulated in the hopper body through the air pumps, and a double-layer baking plate is fixedly connected to the middle of the hopper body.

Further, the bucket body is the big little structure in middle part in both ends, and the heat accumulation of being convenient for makes double-deck roast board department under the heat effect, improves the charcoal rate of utilization, and the double-deck roast board department heat of being convenient for simultaneously is excessive, reduces the thermal gathering of this department, effectively guarantees the homogeneity that tealeaves is heated when toasting, and the distance is no longer than 50cm between double-deck roast board and the bucket body bottom, the bamboo bed course is woven by the bamboo strip and is formed, and during toasting, the bamboo bed course is heated and takes place bamboo fragrance, makes its fragrance of tealeaves adhesion, improves the flavor of tealeaves, and the bamboo bed course of weaving simultaneously has the circulation that the space is difficult for influencing the hot-air.

Furthermore, the double-layer baking plate comprises a bottom sealing plate and an upper air plate fixedly connected to the bottom sealing plate, and the air guide pipe is communicated with the space between the bottom sealing plate and the upper air plate.

Further, the bottom sealing plate is of a ferromagnetic structure, so that heat is conveniently gathered, the upper air plate is of a porous structure, so that hot air conveniently overflows from the surface of the upper air plate, an air cushion layer is formed below the air isolating cushion, and the air isolating cushion and tea on the surface of the air isolating cushion are supported.

Furthermore, the outer end of the air isolating ball is wrapped with a hot melting layer, the inner part of the air isolating ball is filled with a mixture of magnetic powder and iron powder, and the volume mixing ratio of the magnetic powder and the iron powder is 2-5:1, so that the air isolating ball can be adsorbed on the surface of the hopper body and positioned under the action of the magnetic powder when placed on the surface of the double-layer baking plate, and the positions of the air isolating balls are effectively ensured not to be changed easily during pretreatment, and the formation of the air isolating cushion is facilitated.

Further, separate the balloon for the sealed heat-resisting structure of light, make its whole gravity less, can float unsettledly under the hot-air bearing, and the amount of filling of magnetic powder and iron powder is not more than the 1/10 that separates the balloon inner volume, and the amount of filling is too much easily leads to separating the whole gravity of balloon great, is difficult to floated by the hot-air bearing.

Further, the pretreatment of the isolation balloon is as follows:

firstly, uniformly paving a plurality of air separation balloons on a double-layer baking plate, and enabling two adjacent air separation balloons to be in contact with each other;

then baking the double-layer baking plate by using charcoal, controlling the temperature of the double-layer baking plate to be not lower than 100 ℃, slightly melting the surfaces of the air isolating balls, adhering the air isolating balls to each other, removing the charcoal, and cooling and solidifying to form the air isolating cushion which is matched with the surface shape of the double-layer baking plate.

Further, the change interval of the two different circulation speeds of the hot air in the step S4 is not more than 2min, the interval is too long, the tea leaves are easily heated too much, the heating is uneven, the local situation of being burnt is easily caused, when the hot air circulation speed is adjusted, the bearing force of the hot air to the air isolating ball from the bottom to the top is changed continuously, the up-and-down fluctuation bumping situation of the air isolating cushion is continuously caused, the tea leaves are turned, compared with manual turning in the prior art, the tea leaf drying efficiency is obviously improved, and the labor amount is effectively reduced.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through carrying out the preliminary treatment to separating the balloon, obtain the gas pad that separates of light matter, and lay tealeaves and toast on its surface, the back circulates through the hot-air to toasting in the fill, can form the air cushion layer below separating the gas pad, can play the bearing effect to separating the gas pad, make tealeaves and gas pad together be in unsettled state, compare in prior art, it directly is the contact of double-deck roast board to have effectively avoided tealeaves, and then effectively avoid tealeaves to be taken place by the condition of roast paste, the cooperation is to the control of hot-air circulation speed, the condition of jolting that makes separating the gas pad constantly take place to fluctuate, the realization is to the stirring of tealeaves, compare in prior art artifical the stirring, show improvement tealeaves drying efficiency, and effectively reduce the amount of labour.

(2) The distance between the charcoal and the tea is 25-50cm, the tea is easily burnt due to overhigh temperature caused by too close distance, the peripheral temperature of the tea is controlled not to be higher than 70 ℃ during baking, the baking efficiency is influenced due to overlow temperature, and the tea is easily burnt or scorched due to overhigh temperature.

(3) The bucket body is the big little structure in middle part in both ends, be convenient for gather heat, make double-deck roast board department under the heat effect, improve the charcoal rate of utilization, double-deck roast board department heat of being convenient for simultaneously is excessive, reduce this thermal gathering, the homogeneity of being heated when effectively guaranteeing tealeaves and toasting, and the distance is no longer than 50cm between double-deck roast board and the bucket body bottom, the bamboo bedding course is woven by the bamboo strip and is formed, when toasting, the bamboo bedding course is heated and takes place bamboo fragrance, make its fragrance of tealeaves adhesion, improve the flavor of tealeaves, there is the difficult circulation that influences hot-air in space in the bamboo bedding course of weaving simultaneously.

(4) The bottom sealing plate is of a ferromagnetic structure, so that heat is conveniently gathered, the upper air plate is of a porous structure, hot air conveniently overflows from the surface of the upper air plate, an air cushion layer is formed below the air isolating cushion, and the air isolating cushion and tea leaves on the surface of the air isolating cushion are supported.

(5) The outer end of the air isolating ball is wrapped with the hot melting layer, the inner part of the air isolating ball is filled with the mixture of magnetic powder and iron powder, and the volume mixing ratio of the two is 2-5:1, so that the air isolating ball can be adsorbed on the surface of the hopper body and positioned under the action of the magnetic powder when placed on the surface of the double-layer baking plate, and the positions of the air isolating balls are effectively ensured not to be changed easily during pretreatment, thereby facilitating the formation of the air isolating cushion.

(6) Separate the balloon and be the sealed heat-resisting structure of light, make its whole gravity less, can float unsettledly under the hot-air bearing, and the amount of filling of magnetic powder and iron powder is not more than the 1/10 that separates the balloon inner volume, and the amount of filling is too much easily to lead to separating the whole gravity of balloon great, is difficult to floated by the hot-air bearing.

(7) The change interval of the two different circulation speeds of the hot air in the step S4 is not more than 2min, the interval is too long, the local heating of the tea leaves is easily overlarge, the heating is not uniform, and the situation that the local part is burnt is easily caused.

Drawings

FIG. 1 is a schematic diagram of the main flow structure of the present invention;

FIG. 2 is a schematic view of the structure of the present invention for adjusting the circulation speed of hot air to make the air isolating pad continuously move up and down;

FIG. 3 is a schematic perspective view of the baking bucket of the present invention;

FIG. 4 is a schematic structural view of a front cross-section of the baking bucket of the present invention;

FIG. 5 is a schematic view showing a part of the structure of the air barrier of the present invention when it is placed on a double-layered roast board;

FIG. 6 is a schematic view of the construction of the isolation balloon of the present invention;

FIG. 7 is a schematic view of a plurality of separation balloons in contact with each other according to the present invention;

FIG. 8 is a schematic diagram of the structure of the air-isolating ball during baking and heating;

FIG. 9 is a schematic structural view of the pre-treated air-isolating bladder of the present invention;

fig. 10 is a schematic structural view of tea leaves roasted by a charcoal fire in the prior art.

The reference numbers in the figures illustrate:

1 funnel body, 2 air ducts, 3 double-layer baking plates, 31 bottom sealing plates, 32 upper air plates, 4 bamboo cushion layers, 5 isolating balloons and 51 hot melting layers.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1, an air cushion isolated drying process for tea leaves includes the following steps:

s1, firstly, paving a bamboo cushion layer 4 on the baking bucket, and then placing a gas-isolating cushion obtained by preprocessing a gas-isolating balloon 5 on the bamboo cushion layer 4;

s2, laying tea leaves on an air isolation pad, and placing ignited charcoal at the bottom of a baking bucket for baking;

s3, filling hot air in the baking bucket into the middle of the baking bucket through an air pump to form an air cushion layer in the middle of the baking bucket, and supporting an air isolating cushion under the action of the air cushion layer to enable the tea leaves and the air isolating cushion to be in a suspended state as shown in figure 2;

s4, continuously adjusting the circulation speed of hot air to change the thickness of the air cushion layer and drive the tea leaves on the air isolating cushion to turn over;

s5, baking for 30-60min, then finishing baking, standing and cooling, and then finishing drying.

In the step S4, the change interval of the two different circulation speeds of the hot air is not more than 2min, the interval is too long, the local heating of the tea leaves is easily overlarge, the heating is not uniform, and the situation that the local part is burnt is easily caused.

The specific hot air circulation speed needs to be adjusted when the working personnel use the hot air circulation device.

The distance between the charcoal and the tea is 25-50cm, the tea is easily burnt due to overhigh temperature caused by too close distance, the peripheral temperature of the tea is controlled not to be higher than 70 ℃ during baking, the baking efficiency is influenced due to overlow temperature, and the tea is easily burnt or scorched due to overhigh temperature.

Referring to fig. 3-4, the baking hopper comprises a hopper body 1, a plurality of air guide pipes 2 which are uniformly distributed and provided with air pumps are fixedly connected to the outer end of the hopper body 1, hot air is made to circulate in the hopper body 1 through the air pumps, a double-layer baking plate 3 is fixedly connected to the middle of the hopper body 1, the hopper body 1 is of a structure with two large ends and a small middle, heat is convenient to gather, the double-layer baking plate 3 is made to be located under the action of heat, the utilization rate of charcoal is improved, meanwhile, heat at the double-layer baking plate 3 overflows, the gathering of the heat is reduced, the uniformity of the heat during baking of tea is effectively guaranteed, the distance between the double-layer baking plate 3 and the bottom of the hopper body 1 is not more than 50cm, a bamboo cushion layer 4 is formed by weaving bamboo strips, during baking, the bamboo cushion layer 4 is heated to generate bamboo fragrance, the tea adheres to the fragrance of the tea, the flavor of the tea is improved, and the circulation of the hot air is not easily influenced by gaps in the woven bamboo cushion layer 4.

Referring to fig. 9, the double-layered baking sheet 3 includes a bottom sealing plate 31 and an upper air plate 32 fixedly connected to the bottom sealing plate 31, the air duct 2 is communicated with the space between the bottom sealing plate 31 and the upper air plate 32, the bottom sealing plate 31 is of a ferromagnetic structure for easy heat collection, the upper air plate 32 is of a porous structure for easy hot air to overflow from the surface thereof, so as to form an air cushion layer below the air-isolating pad, thereby supporting the air-isolating pad and the tea leaves on the surface thereof.

Referring to fig. 6, the outer end of the air isolation ball 5 is wrapped with a hot melt layer 51, the air isolation ball 5 is filled with a mixture of magnetic powder and iron powder, and the volume mixing ratio of the two is 2-5:1, so that when the air isolation ball 5 is placed on the surface of the double-layer baking plate 3, the air isolation ball can be adsorbed on the surface of the hopper body 1 and positioned under the action of the magnetic powder, the positions of the air isolation balls 5 are effectively ensured not to be changed easily during pretreatment, the air isolation cushion is convenient to form, the air isolation ball 5 is a light and sealed heat-resistant structure, the overall gravity of the air isolation ball is small, the air isolation ball can be suspended under the hot air bearing, the filling amount of the magnetic powder and the iron powder is not greater than 1/10 of the internal volume of the air isolation ball 5, and the air isolation ball 5 is difficult to be supported and floated by the hot air due to excessive filling amount.

Referring to fig. 8-9, the pretreatment of the isolation balloon 5 is:

as shown in fig. 7, firstly, a plurality of isolation balloons 5 are uniformly laid on the double-layer baking sheet 3, and two adjacent isolation balloons 5 are in contact with each other;

then baking the double-layer baking plate 3 by using charcoal, controlling the temperature of the double-layer baking plate 3 to be not lower than 100 ℃, slightly melting the surfaces of the air isolating balls 5, adhering the air isolating balls to each other, removing the charcoal, and cooling and solidifying to form an air isolating cushion which is matched with the surface shape of the double-layer baking plate 3.

During pretreatment, the two end parts of the air isolating cushion are controlled to be protruded, so that tea leaves are intercepted, and the tea leaves are not easy to fall off from the edge of the air isolating cushion.

Through carrying out the preliminary treatment to separating the balloon 5, obtain the gas pad that separates of matter light, and lay tealeaves and toast on its surface, the back circulates through the hot-air to toasting in the fill, can form the air cushion layer below separating the gas pad, can play the bearing effect to separating the gas pad, make tealeaves and gas pad together be in unsettled state, compare in the prior art in figure 10, it directly is double-deck roast board 3 contact effectively to have avoided tealeaves, and then effectively avoid tealeaves to be taken place by the condition of roast paste, the cooperation is to the control of hot-air circulation speed, the condition of jolting that makes separating the gas pad constantly take place to fluctuate, the realization is to the stirring of tealeaves, compare in the prior art artifical stirring, show improvement tealeaves drying efficiency, and effectively reduce the amount of labour.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.