阅读说明：本技术 一种茶叶高效烘干装置及其烘干方法 (Efficient tea leaf drying device and drying method thereof ) 是由 万在培 于 2020-07-21 设计创作，主要内容包括：本发明提供一种茶叶高效烘干装置,包括外箱、内箱、离心风机、热风管、分流管、支管一、支管二、支管三；在外箱顶部安装有顶盖,顶盖中部连接有出风管,在外箱内壁设有减震弹簧；内箱顶部安装有镂空箱盖,在内箱侧壁及底部设有许多通风孔；离心风机安装在外箱外部并与热风装置连通；热风管与分流管都安装在外箱底部；热风管一端与离心风机出风口连通,另一端与分流管连通；支管一、支管二、支管三下端依次与分流管连通,支管一与支管二上端分别横向伸入外箱内,支管二上端竖向伸入外箱内；在支管一上设有闸阀一；在支管三上设有闸阀二。本发明通过控制左右两根支管风量大小来,实现茶叶在内箱内的移动,使得烘干速度得到加快,提升了烘干效率。(The invention provides a high-efficiency tea leaf drying device which comprises an outer box, an inner box, a centrifugal fan, a hot air pipe, a flow dividing pipe, a first branch pipe, a second branch pipe and a third branch pipe, wherein the first branch pipe is connected with the first branch pipe; a top cover is arranged at the top of the outer box, the middle part of the top cover is connected with an air outlet pipe, and a damping spring is arranged on the inner wall of the outer box; the top of the inner box is provided with a hollow box cover, and the side wall and the bottom of the inner box are provided with a plurality of ventilation holes; the centrifugal fan is arranged outside the outer box and is communicated with the hot air device; the hot air pipe and the shunt pipe are both arranged at the bottom of the outer box; one end of the hot air pipe is communicated with the air outlet of the centrifugal fan, and the other end of the hot air pipe is communicated with the flow dividing pipe; the lower ends of the first branch pipe, the second branch pipe and the third branch pipe are sequentially communicated with the flow dividing pipe, the upper ends of the first branch pipe and the second branch pipe transversely extend into the outer box respectively, and the upper ends of the second branch pipe vertically extend into the outer box; a first gate valve is arranged on the first branch pipe; and a second gate valve is arranged on the third branch pipe. According to the tea leaf drying machine, the movement of tea leaves in the inner box is realized by controlling the air volume of the left branch pipe and the right branch pipe, so that the drying speed is accelerated, and the drying efficiency is improved.)

1. A high-efficiency tea leaf drying device is characterized by comprising an outer box, an inner box, a centrifugal fan, a hot air pipe, a flow dividing pipe, a first branch pipe, a second branch pipe and a third branch pipe; the outer box is a hollow box body with an opening at the top, a top cover is detachably arranged at the top of the outer box, the middle part of the top cover is in threaded connection with an air outlet pipe extending into the outer box, and a plurality of damping springs are uniformly arranged on the inner wall of the outer box; the inner box is a box body arranged in the outer box, the top of the inner box is provided with an opening and is detachably provided with a hollowed box cover, the side wall and the bottom of the inner box are provided with a plurality of ventilation holes with the calibers smaller than the tea leaves, and two sides of the bottom of the inner box are also provided with rollers; the centrifugal fan is arranged outside the outer box, and an air inlet of the centrifugal fan is communicated with the hot air device; the hot air pipe and the shunt pipe are both arranged at the bottom of the outer box; one end of the hot air pipe is communicated with the air outlet of the centrifugal fan, and the other end of the hot air pipe is communicated with the flow dividing pipe; the lower ends of the first branch pipe, the second branch pipe and the third branch pipe are sequentially communicated with the flow dividing pipe, the first branch pipe and the third branch pipe are the same in caliber and length, the upper end of the first branch pipe transversely penetrates through the left side wall of the outer box and then extends into the outer box and is opposite to the left side wall of the inner box, the upper end of the second branch pipe vertically penetrates through the bottom of the outer box and then extends into the outer box and is opposite to the bottom of the inner box, and the upper end of the third branch pipe transversely penetrates through the right side wall of the outer box and then extends into the outer box; a first gate valve is arranged on the first branch pipe; and a second gate valve is arranged on the third branch pipe.

2. The efficient tea drying device of claim 1, wherein the bottom of the outer box is supported by a plurality of support columns.

3. The efficient tea drying device according to claim 1, wherein the top cover is detachably connected to the top of the outer box through bolts or threads; the box cover is detachably connected to the top of the inner box through bolts or threads.

4. The efficient tea drying device according to claim 1, wherein the hot air device is a hot air furnace or an electric heating pipe installed at an air inlet of a centrifugal fan.

5. The efficient tea drying device of claim 1, wherein the first gate valve and the second gate valve are electric butterfly valves.

6. The efficient tea drying device according to claim 1, wherein a dust collector is connected to the outside of the air outlet pipe, and an exhaust fan is arranged at an air outlet of the dust collector.

7. A drying method of the tea leaf high-efficiency drying device as claimed in any one of claims 1-5, characterized by comprising the following steps:

s1, a plurality of inner boxes are provided, and each inner box is filled with tea leaves to be dried; when drying, opening the top cover of the outer box, putting the inner box filled with tea leaves into the outer box, and tightly covering the top cover;

s2, starting the centrifugal fan and the hot air device in sequence;

s3, controlling the first gate valve to be opened fully, controlling the second gate valve to be opened to one third to one half, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and enabling the hot air to enter the inner box for drying tea leaves, wherein the air volume of the outlet of the first branch pipe is larger than that of the outlet of the third branch pipe, and the process lasts for 2-6 minutes; the water vapor in the tea leaves is upwards brought out by the hot air through the air outlet pipe;

s4, controlling the first gate valve to be closed to one third to one half of the opening, fully opening the second gate valve, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and allowing the hot air to enter the inner box for drying tea leaves, wherein the air volume at the outlet of the third branch pipe is larger than that at the outlet of the first branch pipe, and the process lasts for 2-6 minutes; the water vapor in the tea leaves is upwards brought out by the hot air through the air outlet pipe;

s5, circularly repeating the steps S3-S4 for two to five times to finish drying the tea leaves;

s6, after drying is finished, closing the hot air device and the centrifugal fan in sequence, opening the top cover, lifting the inner box, opening the cover body of the inner box, and pouring out the tea leaves; and repeating the steps S1-S5, and continuing the tea drying operation.

8. The drying method of the tea leaf high-efficiency drying device according to claim 6, characterized by comprising the following steps:

s1, a plurality of inner boxes are provided, and each inner box is filled with tea leaves to be dried; when drying, opening the top cover of the outer box, placing the inner box filled with tea leaves into the outer box, tightly covering the top cover, and connecting the air outlet pipe with the air inlet pipe of the dust collector;

s2, sequentially starting an exhaust fan, a dust collector, a centrifugal fan and a hot air device;

s3, controlling the first gate valve to be opened fully, controlling the second gate valve to be opened to one third to one half, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and enabling the hot air to enter the inner box for drying tea leaves, wherein the air volume of the outlet of the first branch pipe is larger than that of the outlet of the third branch pipe, and the process lasts for 2-6 minutes; the water vapor in the tea and the generated dust are upwards brought out by hot air through an air outlet pipe, enter a dust collector, are dedusted by the dust collector and are discharged;

s4, controlling the first gate valve to be closed to one third to one half of the opening, fully opening the second gate valve, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and allowing the hot air to enter the inner box for drying tea leaves, wherein the air volume at the outlet of the third branch pipe is larger than that at the outlet of the first branch pipe, and the process lasts for 2-6 minutes; the water vapor in the tea and the generated dust are upwards brought out by hot air through an air outlet pipe, enter a dust collector, are dedusted by the dust collector and are discharged;

s5, circularly repeating the steps S3-S4 for two to five times to finish drying the tea leaves;

s6, after drying is finished, closing the hot air device, the centrifugal fan, the dust collector and the exhaust fan in sequence, opening the top cover, lifting the inner box, opening the cover body of the inner box, and pouring out the tea leaves; and repeating the steps S1-S5, and continuing the tea drying operation.

Technical Field

The invention belongs to the technical field of tea processing, and particularly relates to a high-efficiency tea drying device and a drying method thereof.

Background

Drying and aroma raising are important operation procedures in green tea production, and are generally finished in a tea dryer, and the tea is dried by hot air. However, in the existing drying machine, since the tea leaves are stacked in the tea leaf drying machine for drying, the tea leaves are easily heated unevenly, and further, the drying time is prolonged, and the drying efficiency is low.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an efficient tea leaf drying device with high drying speed and high drying efficiency and a drying method thereof.

The specific technical scheme is as follows:

a high-efficiency tea leaf drying device comprises an outer box, an inner box, a centrifugal fan, a hot air pipe, a flow dividing pipe, a first branch pipe, a second branch pipe and a third branch pipe; the outer box is a hollow box body with an opening at the top, a top cover is detachably arranged at the top of the outer box, the middle part of the top cover is in threaded connection with an air outlet pipe extending into the outer box, and a plurality of damping springs are uniformly arranged on the inner wall of the outer box; the inner box is a box body arranged in the outer box, the top of the inner box is provided with an opening and is detachably provided with a hollowed box cover, the side wall and the bottom of the inner box are provided with a plurality of ventilation holes with the calibers smaller than the tea leaves, and two sides of the bottom of the inner box are also provided with rollers; the centrifugal fan is arranged outside the outer box, and an air inlet of the centrifugal fan is communicated with the hot air device; the hot air pipe and the shunt pipe are both arranged at the bottom of the outer box; one end of the hot air pipe is communicated with the air outlet of the centrifugal fan, and the other end of the hot air pipe is communicated with the flow dividing pipe; the lower ends of the first branch pipe, the second branch pipe and the third branch pipe are sequentially communicated with the flow dividing pipe, the first branch pipe and the third branch pipe are the same in caliber and length, the upper end of the first branch pipe transversely penetrates through the left side wall of the outer box and then extends into the outer box and is opposite to the left side wall of the inner box, the upper end of the second branch pipe vertically penetrates through the bottom of the outer box and then extends into the outer box and is opposite to the bottom of the inner box, and the upper end of the third branch pipe transversely penetrates through the right side wall of the outer box and then extends into the outer box; a first gate valve is arranged on the first branch pipe; and a second gate valve is arranged on the third branch pipe.

Further, the bottom of the outer box is supported by a plurality of support columns.

Further, the top cover is detachably connected to the top of the outer box through bolts or threads; the box cover is detachably connected to the top of the inner box through bolts or threads.

Furthermore, the hot air device is a hot blast stove or an electric heating pipe arranged at an air inlet of the centrifugal fan.

Furthermore, the first gate valve and the second gate valve are electric butterfly valves.

Furthermore, the outside of the air outlet pipe is connected with a dust collector, and an air outlet of the dust collector is provided with an exhaust fan.

A drying method of a tea leaf efficient drying device comprises the following steps:

s1, a plurality of inner boxes are provided, and each inner box is filled with tea leaves to be dried; when drying, the top cover of the outer box is opened, the inner box filled with tea leaves is placed into the outer box, and the top cover is tightly covered.

S2, starting the centrifugal fan and the hot air device in sequence;

s3, controlling the first gate valve to be opened fully, controlling the second gate valve to be opened to one third to one half, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and enabling the hot air to enter the inner box for drying tea leaves, wherein the air volume of the outlet of the first branch pipe is larger than that of the outlet of the third branch pipe, and the process lasts for 2-6 minutes; in the process, because the air volume of the first outlet of the branch pipe is larger than the air volume of the third outlet of the branch pipe, the left side of the inner box is pushed to move towards the right wall of the outer box by the wind thrust of the wind larger than the right side of the inner box, and the wind blown out by the first branch pipe transversely blows the left side wall of the inner box, until the right wall of the inner box contacts with the damping spring, under the action of the damping spring and the left and right wind forces, the movement is stopped after the left and right sides of the inner box are stressed in balance; at the moment, the outlets of the second branch pipes are over against the left side of the bottom of the inner box, tea leaves in the inner box are blown by hot air blown by the second branch pipes vertically to be lifted or suspended upwards, meanwhile, the tea leaves are blown by the hot air blown by the first branch pipes transversely to drift rightwards to make parabolic motion, finally, the tea leaves move to the right side of the inner box and are blown by the hot air blown by the third branch pipes transversely to move leftwards and downwards to fall to the left side of the bottom of the inner box, the tea leaves are blown by the hot air blown by the second branch pipes again to be lifted or suspended, and circular drying is carried out in the inner box; the water vapor in the tea is upwards brought out by the hot air through the air outlet pipe.

S4, controlling the first gate valve to be closed to one third to one half of the opening, fully opening the second gate valve, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and allowing the hot air to enter the inner box for drying tea leaves, wherein the air volume at the outlet of the third branch pipe is larger than that at the outlet of the first branch pipe, and the process lasts for 2-6 minutes; in the process, because the air volume of the three outlets of the branch pipe is larger than that of the first outlet of the branch pipe, the right side of the inner box is pushed by the wind to be larger than the left side of the inner box, and the wind blown out by the three branch pipes transversely blows the right side wall of the inner box, the inner box is pushed to move towards the left wall of the outer box until the left wall of the inner box contacts with the damping spring, and under the action of the damping spring and the left and right wind forces, the movement is stopped after the left and right sides of the inner box are stressed in balance; at the moment, the outlets of the second branch pipes are over against the right side of the bottom of the inner box, tea leaves in the inner box are blown by hot air blown from the second branch pipes vertically to be lifted or suspended upwards, meanwhile, the tea leaves are blown by hot air blown from the third branch pipes transversely to drift leftwards to make parabolic motion, finally, the tea leaves move to the left side of the inner box, are blown by the hot air blown from the first branch pipes transversely to move rightwards and downwards to fall to the right side of the bottom of the inner box, are blown by the hot air blown from the second branch pipes to be lifted or suspended downwards again, and are circularly dried in the inner box; the water vapor in the tea is upwards brought out by the hot air through the air outlet pipe.

S5, circularly repeating the steps S3-S4 for two to five times, and drying the tea leaves.

S6, after drying is finished, closing the hot air device and the centrifugal fan in sequence, opening the top cover, lifting the inner box, opening the cover body of the inner box, and pouring out the tea leaves; and repeating the steps S1-S5, and continuing the tea drying operation.

The other drying method of the efficient tea drying device comprises the following steps:

s1, a plurality of inner boxes are provided, and each inner box is filled with tea leaves to be dried; when the tea is dried, the top cover of the outer box is opened, the inner box filled with the tea is placed into the outer box, the top cover is tightly covered, and the air outlet pipe is connected with the air inlet pipe of the dust collector.

And S2, sequentially starting the exhaust fan, the dust collector, the centrifugal fan and the hot air device.

S3, controlling the first gate valve to be opened fully, controlling the second gate valve to be opened to one third to one half, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and enabling the hot air to enter the inner box for drying tea leaves, wherein the air volume of the outlet of the first branch pipe is larger than that of the outlet of the third branch pipe, and the process lasts for 2-6 minutes; in the process, because the air volume of the first outlet of the branch pipe is larger than the air volume of the third outlet of the branch pipe, the left side of the inner box is pushed to move towards the right wall of the outer box by the wind thrust of the wind larger than the right side of the inner box, and the wind blown out by the first branch pipe transversely blows the left side wall of the inner box, until the right wall of the inner box contacts with the damping spring, under the action of the damping spring and the left and right wind forces, the movement is stopped after the left and right sides of the inner box are stressed in balance; at the moment, the outlets of the second branch pipes are over against the left side of the bottom of the inner box, tea leaves in the inner box are blown by hot air blown by the second branch pipes vertically to be lifted or suspended upwards, meanwhile, the tea leaves are blown by the hot air blown by the first branch pipes transversely to drift rightwards to make parabolic motion, finally, the tea leaves move to the right side of the inner box and are blown by the hot air blown by the third branch pipes transversely to move leftwards and downwards to fall to the left side of the bottom of the inner box, the tea leaves are blown by the hot air blown by the second branch pipes again to be lifted or suspended, and circular drying is carried out in the inner box; the water vapor in the tea and the generated dust are upwards brought out by hot air through the air outlet pipe, enter the dust collector, are dedusted by the dust collector and are discharged.

S4, controlling the first gate valve to be closed to one third to one half of the opening, fully opening the second gate valve, blowing hot air generated by the hot air device into the outer box through the first branch pipe, the second branch pipe and the third branch pipe by the centrifugal fan and allowing the hot air to enter the inner box for drying tea leaves, wherein the air volume at the outlet of the third branch pipe is larger than that at the outlet of the first branch pipe, and the process lasts for 2-6 minutes; in the process, because the air volume of the three outlets of the branch pipe is larger than that of the first outlet of the branch pipe, the right side of the inner box is pushed by the wind to be larger than the left side of the inner box, and the wind blown out by the three branch pipes transversely blows the right side wall of the inner box, the inner box is pushed to move towards the left wall of the outer box until the left wall of the inner box contacts with the damping spring, and under the action of the damping spring and the left and right wind forces, the movement is stopped after the left and right sides of the inner box are stressed in balance; at the moment, the outlets of the second branch pipes are over against the right side of the bottom of the inner box, tea leaves in the inner box are blown by hot air blown from the second branch pipes vertically to be lifted or suspended upwards, meanwhile, the tea leaves are blown by hot air blown from the third branch pipes transversely to drift leftwards to make parabolic motion, finally, the tea leaves move to the left side of the inner box, are blown by the hot air blown from the first branch pipes transversely to move rightwards and downwards to fall to the right side of the bottom of the inner box, are blown by the hot air blown from the second branch pipes to be lifted or suspended downwards again, and are circularly dried in the inner box; the water vapor in the tea leaves is upwards brought out by the hot air through the air outlet pipe; the water vapor in the tea and the generated dust are upwards brought out by hot air through the air outlet pipe, enter the dust collector, are dedusted by the dust collector and are discharged.

S5, circularly repeating the steps S3-S4 for two to five times, and drying the tea leaves.

S6, after drying is finished, closing the hot air device, the centrifugal fan, the dust collector and the exhaust fan in sequence, opening the top cover, lifting the inner box, opening the cover body of the inner box, and pouring out the tea leaves; and repeating the steps S1-S5, and continuing the tea drying operation.

According to the tea leaf drying machine, the movement of tea leaves in the inner box is realized by controlling the air volume of the left branch pipe and the right branch pipe, so that the drying speed is accelerated, and the drying efficiency is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a tea leaf efficient drying device of the present invention;

FIG. 2 is a schematic view of the inner box of FIG. 1 shown in a right-hand position;

FIG. 3 is a schematic view of the inner box of FIG. 1 shown in a left-hand position;

shown in the figure: 1-outer box, 2-top cover, 3-air outlet pipe, 4-inner box, 5-cover, 6-roller, 7-centrifugal fan, 8-hot air pipe, 9-shunt pipe, 10-branch pipe I, 11-gate valve I, 12-branch pipe II, 13-pillar, 14-branch pipe III, 15-gate valve II and 16-damping spring.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.