Tea withering machine with double air inlet channels

Abstract

The utility model relates to a double-air-inlet-channel tea withering machine which comprises a withering groove, a ventilation net plate for spreading tea is arranged in the withering groove, a ventilation channel for guiding air to flow to the ventilation net plate is arranged below the ventilation net plate, the ventilation channel is communicated with a first fan, and the first fan is communicated with a heating mechanism; two air inlets are formed in the withering groove, and the ventilation channel is communicated with an outlet of the first fan through the air inlets; free air circulation is achieved in the ventilation channel through the double air inlets, the air quality and circulation performance are improved, temperature and humidity are distributed more evenly, the problem of local temperature difference is avoided, and the ventilation device is simple, efficient, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of tea production equipment, in particular to a tea withering machine with double air inlet channels. Background Art

[0002] Tea withering is the first process of tea processing. Its main function is to make the chemical composition and physical properties of fresh leaves change under the appropriate temperature treatment, which not only creates conditions for the subsequent operation process, but also the appropriateness of withering is closely related to the quality of black tea.

[0003] Existing withering devices usually use an air inlet channel to transport hot air to the ventilation channel in the withering machine for withering, which causes uneven hot air transmission in the ventilation channel, thereby causing the tea leaves spread on the ventilation mesh to receive uneven heat and wind force, affecting the withering effect of the tea leaves and seriously affecting the overall quality of the tea leaves.

[0004] The hot air flowing out through the ventilation mesh on the existing withering device gathers around the withering trough, causing the temperature around the withering trough to rise and the air circulation to deteriorate, thereby reducing the oxygen content in the withering trough, affecting the withering effect and rate of the tea, and seriously affecting the overall quality of the tea. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a tea withering machine with double air inlets, which is simple, efficient, safe, reliable and easy to operate, and can realize free circulation of air in a ventilation channel through double air inlets, thereby improving air quality and fluidity, making temperature and humidity distribution more uniform and avoiding the problem of local temperature differences.

[0006] The utility model is realized through the following technical scheme, which provides a tea withering machine with double air inlet channels, including a withering trough, a ventilation mesh plate for spreading tea leaves is arranged in the withering trough, a ventilation channel for guiding wind flow to the ventilation mesh plate is arranged below the ventilation mesh plate, the ventilation channel is connected to a first fan, and the first fan is connected to a heating mechanism; two air inlets are arranged on the withering trough, and the ventilation channel is respectively connected to the outlet of the first fan through the air inlets; free circulation of air is realized in the ventilation channel through the double air inlets, air quality and fluidity are improved, temperature and humidity distribution are more uniform, and local temperature differences are avoided.

[0007] As an optimization, a rotating shaft is provided in the ventilation channel and is arranged in sequence along the wind transmission direction and inclined upward. The rotating shaft is provided with arc-shaped fan blades arranged in sequence along the circumference of the rotating shaft, and the extension direction of the fan blades intersects with the wind transmission direction in the ventilation channel. The air flow in the ventilation channel is accelerated by the rotating shaft and the fan blades, promoting the wind to flow to the ventilation mesh.

[0008] As an optimization, the outlet of the first fan is connected to the air inlet through an air inlet pipe, and a wind shield is provided at one end of the air inlet pipe close to the air inlet, and the rotation axis of the wind shield and the axis of the air inlet pipe are skew lines or intersecting lines; the wind speed and wind direction are adjusted by the wind shield, thereby adjusting the air flow in the ventilation channel.

[0009] As an optimization, an upward extending ventilation duct is provided above the ventilation mesh plate, and the entrance of the ventilation duct faces the ventilation mesh plate; according to the chimney effect, the air in the withering trough is guided to flow upward, thereby accelerating the air flow in the withering trough, increasing the oxygen content in the withering trough, and accelerating the withering rate of the tea leaves.

[0010] As an optimization, a second fan is provided in the ventilation duct to guide the wind to flow upward, thereby accelerating the air flow in the ventilation duct.

[0011] The beneficial effects of the utility model are as follows: free circulation of air is achieved in the ventilation channel through the double air inlets, air quality and fluidity are improved, temperature and humidity distribution is made more uniform, and local temperature differences are avoided; the fan blades are driven to rotate faster through air flow, thereby accelerating the air flow in the ventilation channel and promoting wind flow to the ventilation mesh plate; the wind speed and wind direction are adjusted through the wind shield, thereby adjusting the air flow in the ventilation channel; the air in the withering trough is guided to flow upward through the ventilation duct and the second fan, thereby accelerating the air flow in the withering trough, increasing the oxygen content in the withering trough, and accelerating the withering rate of tea leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the utility model;

[0015] As shown in the figure:

[0016] 1. Withering trough, 2. Ventilation mesh plate, 3. Ventilation channel, 4. Filter device, 5. First fan, 6. Heating mechanism, 7. Wind shield, 8. Air inlet pipe, 9. Air inlet, 10. Rotating shaft, 11. Fan blades, 12. Ventilation pipe, 13. Second fan, 14. Wind collecting hood. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0018] like Figure 1 and 2The double air inlet channel tea withering machine of the utility model shown in the figure comprises a withering trough 1, in which a ventilation mesh plate 2 for spreading tea leaves is arranged, below which a ventilation channel 3 for guiding wind flow to the ventilation mesh plate 2 is arranged, the ventilation channel 3 is connected to a first fan 5, and the first fan 5 is connected to a heating mechanism 6; two air inlets 9 are provided on the withering trough 1, and the ventilation channel 3 is connected to the outlet of the first fan 5 respectively through the air inlets 9; the ventilation mesh plate 2 is arranged horizontally; two first fans 5 are arranged on the withering trough 1, and the two air inlets 9 are connected to an outlet of the first fan 5 respectively; a filtering device 4 is provided at the inlet of the first fan 5, and the outlet of the first fan 5 is connected to the inlet of the heating mechanism 6, and the outlet of the heating mechanism 6 is connected to the air inlet 9 of the ventilation channel 3; the outlet of the heating mechanism 6 is provided with a temperature sensor 15.

[0019] The tea leaves are evenly spread on the ventilation mesh plate 2, the first fan 5 and the heating mechanism 6 are started, and the air passes through the filter device 4, the first fan 5, the heating mechanism 6, and the air inlet 9 in sequence to enter the ventilation channel 3, and the hot air flows upward through the ventilation channel 3 and passes through the mesh holes of the ventilation mesh plate 2, thereby withering the tea leaves on the ventilation mesh plate 2.

[0020] like Figure 1 and 3 The ventilation channel 3 shown in the figure is provided with a rotating shaft 10 which is arranged in sequence and inclined upward along the wind transmission direction, and the rotating shaft 10 is provided with arc-shaped fan blades 11 which are arranged in sequence along the circumference of the rotating shaft 10, and the extension direction of the fan blades 11 intersects with the wind transmission direction in the ventilation channel 3; the axis of the rotating shaft 10 is perpendicular to the hot air transmission direction in the ventilation channel 3; the fan blades 11 extend along the axis direction of the rotating shaft 10; the air flows in the ventilation channel 3 and drives the fan blades 11 to rotate, and the fan blades 11 drive the air to diffuse around the fan blades 11.

[0021] like Figure 1 and 3 The outlet of the first fan 5 shown is connected to the air inlet 9 through the air inlet pipe 8, and a wind shield 7 is rotated at one end of the air inlet pipe 8 close to the air inlet 9, and the rotation axis of the wind shield 7 and the axis of the air inlet pipe 8 are skew lines or intersecting; the wind shield 7 is fixedly connected to a connecting rod, and the connecting rod is rotated in the air inlet pipe 8 along the vertical direction; a through hole is opened on the air inlet pipe 8, one end of the connecting rod passes through and extends to the outside of the air inlet pipe 8, and a handle is fixedly connected to the end of the connecting rod extending to the outside of the air inlet pipe 8; when the handle is turned, the handle drives the wind shield 7 to rotate through the connecting rod, and the wind shield 7 adjusts the wind speed and wind direction.

[0022] like Figure 1 , 2As shown in Figure 3, an upwardly extending ventilation duct 12 is provided above the ventilation mesh plate 2, and the entrance of the ventilation duct 12 faces the ventilation mesh plate 2; the bottom of the ventilation duct 12 is connected to a wind collecting hood 1414, and the bottom of the wind collecting hood 1414 is provided with an opening facing the ventilation mesh plate 2, and the projection of the ventilation mesh plate 2 in the vertical direction is located within the projection of the opening of the wind collecting hood 1414 in the vertical direction; after the hot air passes through the mesh holes of the ventilation mesh plate 2, under the action of the chimney effect, the hot air is collected by the wind collecting hood 1414 and flows upward along the ventilation duct 12.

[0023] like Figure 1 and 3 The ventilation duct 12 shown is provided with a second fan 13 for guiding the wind to flow upward; when the second fan 13 is started, the air in the ventilation duct 12 is accelerated to flow upward.

[0024] In the actual production process, the tea leaves are evenly spread on the ventilation mesh plate 2, the first fan 5 and the heating mechanism 6 are started, and the handle is rotated. The handle drives the wind shield plate 7 to rotate through the connecting rod to adjust the wind speed and wind direction; the air passes through the filter device 4, the first fan 5, the heating mechanism 6, and the air inlet 9 in sequence to enter the ventilation channel 3, the hot air flows in the ventilation channel 3 and drives the fan blades 11 to rotate, and the fan blades 11 drive the hot air to diffuse around the fan blades 11, and the hot air flows upward through the mesh holes of the ventilation mesh plate 2 and withers the tea leaves on the ventilation mesh plate 2; the second fan 13 is started, and under the action of the chimney effect, the hot air that passes through the mesh holes of the ventilation mesh plate 2 is collected by the wind collecting hood 1414 and flows upward along the ventilation pipe 12, and accelerates the air flow at the ventilation mesh plate 2, increases the oxygen content, and promotes the withering of the tea leaves.

[0025] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A tea withering machine with double air inlet channels, comprising a withering trough (1), a ventilation mesh plate (2) for spreading tea leaves in the withering trough (1), a ventilation channel (3) for guiding air flow toward the ventilation mesh plate (2) under the ventilation mesh plate (2), the ventilation channel (3) being connected to a first fan (5), and the first fan (5) being connected to a heating mechanism (6); characterized in that: Two air inlets (9) are provided on the withering trough (1), and the ventilation passage (3) is connected to the outlets of the first fan (5) respectively through the air inlets (9).

2. The tea withering machine with double air inlet channels according to claim 1, characterized in that: A rotating shaft (10) is arranged in sequence in an inclined upward direction along a wind transmission direction in the ventilation channel (3); arc-shaped blades (11) are arranged in sequence along a circumferential direction of the rotating shaft (10); and an extending direction of the blades (11) intersects with the wind transmission direction in the ventilation channel (3).

3. The tea withering machine with double air inlet channels according to claim 1, characterized in that: The outlet of the first fan (5) is connected to the air inlet (9) via an air inlet pipe (8); a wind shield (7) is provided at one end of the air inlet pipe (8) close to the air inlet (9); the rotation axis of the wind shield (7) and the axis of the air inlet pipe (8) are skew lines or intersect each other.

4. The tea withering machine with double air inlet channels according to claim 1, characterized in that: A ventilation pipe (12) extending upward is provided above the ventilation mesh plate (2), and an inlet of the ventilation pipe (12) faces the ventilation mesh plate (2).

5. The tea withering machine with double air inlet channels according to claim 4, characterized in that: A second fan (13) for guiding wind to flow upward is arranged in the ventilation pipe (12).

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