A tea processing cooling device

Abstract

This utility model discloses a tea processing cooling device, comprising: a cooling platform having a cooling channel for tea leaves to pass through, and a cooling zone on the cooling channel; a transfer box with a hollow bottom, through which tea leaves are placed and pass through the cooling channel to the cooling zone for cooling treatment; and an air outlet located on the cooling platform corresponding to the position where the transfer box stops in the cooling zone. After the tea leaves have been processed, they are placed in the transfer box, and the tea leaves and the transfer box remain relatively stationary, preventing damage to the delicate buds of the tea leaves due to the movement / vibration of the conveyor belt. The hollow bottom of the transfer box and the air outlet corresponding to the transfer box in the cooling zone allow the temperature of the tea leaves inside the transfer box to dissipate from both the top and bottom, without affecting the cooling effect of the tea leaves.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and in particular to a tea processing cooling device. Background Technology

[0002] In the tea processing process, "killing green" is an essential step for most tea varieties. It uses high temperature to quickly destroy the activity of enzymes such as polyphenol oxidase in fresh leaves, preventing them from catalyzing the oxidation of tea polyphenols. After killing green, the tea leaves must be cooled down quickly to prevent residual heat from causing excessive oxidation or yellowing of the leaves, which would affect the color, aroma and quality of the tea.

[0003] Existing tea cooling equipment can generally be classified into several categories according to its structure: mesh belt type, vibrating type, drum type, box type, and spiral tower type. Among them, the mesh belt type cooling device cools the tea leaves by moving them evenly on a mesh conveyor belt and cooling them with a fan. It is the most suitable cooling device for continuous operation and large-scale production in factories.

[0004] Due to its structural characteristics, it inevitably has some drawbacks, such as: the movement and turning of the mesh belt can easily damage the delicate buds of tea leaves; the tea hairs on the surface of the tea leaves are easily blown away by the wind, affecting the factory environment; and the rapid cooling in the early stage can lead to incomplete volatilization of chlorophyll in the tea leaves and the inability to form aromatic substances, etc. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a tea processing cooling device that can prevent tea leaves from being damaged by being turned over during cooling.

[0006] The tea processing cooling device according to an embodiment of the present utility model includes:

[0007] A cooling platform, wherein the cooling platform has a cooling channel through which tea leaves pass, and the cooling channel is provided with a cooling zone;

[0008] The transfer box has a hollowed-out bottom structure. After the tea leaves are placed in the transfer box, they enter the cooling zone through the cooling channel to cool the tea leaves.

[0009] The air outlet is located on the cooling platform corresponding to the position where the transfer box stops in the cooling zone during cooling.

[0010] The tea processing cooling device according to the embodiments of this utility model has at least the following beneficial effects:

[0011] After the tea leaves are processed, they are placed in a transfer box. The tea leaves and the transfer box remain relatively still, so the delicate buds of the tea leaves will not be damaged due to the movement / vibration of the conveyor belt. The bottom of the transfer box has a hollow structure, and the cooling area is equipped with air outlets corresponding to the transfer box, so that the temperature of the tea leaves inside the transfer box can dissipate from the top and bottom of the transfer box without affecting the cooling effect of the tea leaves.

[0012] According to some embodiments of the present invention, it further includes a transmission assembly, which is disposed in the cooling platform and is used to drive the transfer box to move within the cooling channel.

[0013] According to some embodiments of this utility model, the transmission component is a conveyor belt that moves synchronously on both sides of the cooling platform. A crossbar is provided between the two conveyor belts, and the distance between two adjacent crossbars is equal to the distance between two adjacent cooling zones. The front end of the transfer box is provided with a hook that engages with the crossbar. The transfer box is movably engaged with the crossbar through the hook and moves as the crossbar moves.

[0014] According to some embodiments of this utility model, the transmission component is a conveyor belt that moves synchronously on both sides of the cooling platform. Each side of the conveyor belt is provided with a pin at a relative position. The distance between two adjacent pins on the same side is equal to the distance between two adjacent cooling zones. The transfer box is provided with pins that protrude from both sides of the box body and are movably engaged with the pins. The transfer box is movably engaged with the pins and moves as the pins move.

[0015] According to some embodiments of the present invention, the transfer box is provided with a movable mesh cover for confining the tea leaves within the transfer box.

[0016] According to some embodiments of the present invention, the cooling zone includes: a blower device disposed at the top of the cooling channel, with its air outlet facing the transfer box.

[0017] According to some embodiments of this utility model, the cooling zone further includes a purification box, which is installed inside the cooling platform. The purification box abuts against the side of the air outlet away from the transfer box. The air after cooling the tea leaves enters the purification box through the air outlet for processing and is then discharged outward.

[0018] According to some embodiments of this utility model, the air outlet of the blower is a wind hood that moves up and down via a lifting structure. When the wind hood moves down, it abuts against the transfer box to blow air and cool the tea leaves inside.

[0019] According to some embodiments of this utility model, the cooling zone is provided in multiple ways, and each cooling zone is provided with a separate blower; the blower uses a hot air fan, wherein the blower of the last cooling zone uses a normal temperature fan; the outlet air temperature of the multiple hot air fans decreases sequentially according to the running path of the transfer box.

[0020] According to some embodiments of this utility model, the cooling zone is provided in multiple ways, and each cooling zone is provided with a separate blower; the purification box is divided into multiple corresponding intervals according to the positions of the multiple cooling zones; the blower uses a normal temperature fan, wherein the blower of the first cooling zone through which the transfer box passes uses a hot air fan; according to the order in which the transfer box passes, the waste heat air in the purification box interval corresponding to the first cooling zone is sent to the blower of the second cooling zone through a pipe, and so on; wherein the blower of the last cooling zone is not connected to the waste heat air of the previous cooling zone.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a tea processing cooling device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of a tea processing cooling device according to an embodiment of the present invention, after the cover plate on one side is hidden.

[0025] Figure 3 This is a schematic diagram of the cooling platform structure of a tea processing cooling device according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the transfer box structure of a tea processing cooling device according to an embodiment of the present invention;

[0027] Icon labels:

[0028] Cooling platform 1; Cooling channel 11; Air outlet 12;

[0029] 2. Transfer box; 21. Mesh cover; 22. Flexible fabric;

[0030] Transmission assembly 3; Conveyor belt 31; Crossbar 32; Hook 33; Drive shaft 34;

[0031] Cooling zone 4; blower 41; fan shroud 42; lifting structure 43; pipe 44; first cooling zone 401; second cooling zone 402; third cooling zone 403;

[0032] Purification box 5; cover 51; exhaust vent 52. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "several" refers to one or more, and "multiple" refers to two or more. The use of "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the number of indicated technical features, or the sequential relationship between indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] This utility model embodiment proposes a tea processing cooling device, which mainly includes: a cooling platform 1 and a transfer box 2. The cooling platform 1 has a cooling channel 11 for tea leaves to pass through, and a cooling zone 4 is provided on the cooling channel 11. The transfer box 2 has a hollow bottom structure. After the tea leaves are placed in the transfer box 2, they enter the cooling zone 4 through the cooling channel 11 to cool down the tea leaves. An air outlet 12 is set on the cooling platform 1 at the position where the transfer box 2 stops when it is cooled in the cooling zone 4. After the tea leaves are processed, they are placed in the transfer box 2. The tea leaves and the transfer box 2 are relatively stationary, so that the delicate buds of the tea leaves will not be damaged due to the movement / vibration of the mesh belt. The bottom of the transfer box 2 has a hollow structure, and the cooling zone 4 has an air outlet 12 corresponding to the transfer box 2, so that the temperature of the tea leaves in the transfer box 2 can dissipate from the top and bottom ends of the transfer box 2 without affecting the cooling effect of the tea leaves.

[0038] In this embodiment, a transmission assembly 3 is also included. The transmission assembly 3 is disposed in the cooling platform 1 and is used to drive the transfer box 2 to move within the cooling channel 11.

[0039] In this embodiment, the transmission component 3 is a conveyor belt 31 that moves synchronously on both sides of the cooling platform 1. A crossbar 32 is provided between the two conveyor belts 31. The distance between two adjacent crossbars 32 is equal to the distance between two adjacent cooling zones 4. The front end of the transfer box 2 is provided with a hook 33 that engages with the crossbar 32. The transfer box 2 is movably engaged with the crossbar 32 through the hook 33 and moves as the crossbar 32 moves.

[0040] The two conveyor belts 31 are driven to move synchronously by the coaxial drive shaft 34 at the bottom of the cooling platform 1. The drive shaft 34 is controlled by a motor to rotate. The upper conveyor belt 31 of the cooling platform 1 is supported by short rollers on both sides, which does not affect the movement of the transfer box 2 in the cooling channel 11.

[0041] Before the transfer box 2 enters the cooling platform 1, the hook 33 is moved to the moving path of the crossbar 32. After the crossbar 32 engages with the hook 33, the conveyor belt 31 moves and drives the transfer box 2 into the preset cooling zone 4 and stops. In the cooling zone 4, the tea in the transfer box 2 is cooled. After the cooling is completed, the conveyor belt 31 moves forward again. When it reaches the end of the cooling platform 1, the crossbar 32 moves downward with the conveyor belt 31 and automatically disengages from the hook 33. As the conveyor belt 31 moves, the new transfer box 2 is driven into the cooling zone 4 by the rotating crossbar 32. The transfer box 2 that has completed the cooling treatment is actively pulled out of the cooling platform 1 or pushed out of the cooling platform 1 by the transfer box 2 that has completed the cooling treatment later.

[0042] In some other embodiments of this utility model, the transmission component 3 is a conveyor belt 31 that moves synchronously on both sides of the cooling platform. The relative positions of the two conveyor belts 31 are provided with pins. The distance between two adjacent pins on the same side is equal to the distance between two adjacent cooling zones 4. The transfer box 2 is provided with pins that protrude from both sides of the box body and are movably engaged with the pins. The transfer box 2 is movably engaged with the pins and moves with the pins.

[0043] The two conveyor belts 31 are driven by the coaxial drive shaft 34 at the bottom of the cooling platform to achieve synchronous movement. The upper conveyor belt 31 of the cooling platform 1 is supported by short rollers set on both sides, which does not affect the movement of the transfer box 2 in the cooling channel 11.

[0044] Before the transfer box 2 enters the cooling platform 1, the pin is moved to the active path of the hanging pin. After the hanging pin catches the pin, the transmission belt 31 moves and drives the transfer box 2 into the preset cooling zone 4 and stops. In the cooling zone 4, the tea in the transfer box 2 is cooled. After the cooling is completed, the transmission belt 31 moves forward again. When it reaches the end of the cooling platform 1, the hanging pin moves down with the transmission belt and automatically disengages from the pin. As the transmission belt 31 moves, the new transfer box 2 is driven into the cooling zone by the rotating hanging pin. The transfer box 2 that has completed the cooling treatment is actively pulled out of the cooling platform 1 or pushed out of the cooling platform 1 by the transfer box 2 that has completed the cooling treatment later.

[0045] In this embodiment, the transfer box 2 is provided with a movable mesh cover 21 for confining the tea leaves inside the transfer box 2. The mesh cover 21 includes a fixed frame and a breathable flexible fabric 22. The movable connection between the mesh cover 21 and the transfer box 2 can be snap-fit, hinged, etc. After the tea leaves are put into the transfer box 2, the flexible fabric 22 lightly covers the tea leaves. This can improve the cooling efficiency by appropriately increasing the air volume, while preventing the tea leaves from being blown away and causing damage to the delicate buds of the tea leaves.

[0046] In this embodiment, the cooling zone 4 includes a blower 41, which is set at the top of the cooling channel 11, with its air outlet facing the transfer box 2. When cooling, the blower 41 blows low-temperature air through its air outlet facing the transfer box 2 to cool the tea leaves inside.

[0047] In this embodiment, the cooling zone 4 also includes a purification box 5, which is set inside the cooling platform 1. Its perimeter does not extend beyond the conveyor belt 31. The purification box 5 is abutted against the side of the air outlet 12 away from the transfer box 2. The air after cooling the tea leaves enters the purification box 5 through the air outlet 12 for processing and is then discharged out through the exhaust port 52. The purification box 5 is equipped with a dust removal device to purify the air passing through the transfer box 2 and filter out the dust. The dust removal device can be a filter dust collector, such as a bag filter, cartridge filter, screen filter, etc.

[0048] The side panel of the cooling platform 1 corresponding to the purification box 5 is provided with a removable cover plate 51, which can be removed to clean the dust removal device inside the purification box 5.

[0049] In this embodiment, the air outlet of the blower 41 is a wind hood 42 that moves up and down through the lifting structure 43. When the wind hood 42 moves down, it abuts against the transfer box 2 to blow air and cool the tea inside.

[0050] The lifting structure 43 can be a movable cylinder, a lifting motor, etc.

[0051] The lower periphery of the fan shroud 42 corresponds to the upper periphery of the transfer box 2, so that the fan shroud 42 and the transfer box 2 have a certain airtightness after they come into contact, and the cooling air blown out by the blower structure 41 enters the purification box 5 through the air outlet 12.

[0052] In other embodiments, the structure of the hood 42 has an internal space larger than that of the transfer box 2. When the hood 42 moves downward, it abuts against the surface of the cooling platform 1, completely covering the transfer box 2. This reduces the precision of the contact between the hood 42 and the transfer box 2, and also allows the cooling air blown out by the blower structure 41 to enter the purification box 5 through the air outlet 12.

[0053] In this embodiment, there are three cooling zones 4, and each cooling zone 4 is equipped with a separate blower 41. According to the order in which the transfer box 2 passes, the blowers of the first cooling zone 401 and the second cooling zone 402 use hot air blowers, and the blower of the third cooling zone 403 uses a normal temperature blower.

[0054] When using:

[0055] First cooling zone (high temperature zone): Use a gentle breeze of 40~50℃ to reduce the blade temperature from 80℃ to 60℃;

[0056] Second cooling zone (medium temperature zone): Use 30~35℃ air to reduce the blade temperature to 40℃;

[0057] Third cooling zone (low temperature zone): Use ambient temperature air (25℃) to lower the blade temperature to room temperature;

[0058] By using a three-stage cooling zone to gradually cool the tea leaves, the incomplete volatilization of chlorophyll and the inability to form aromatic substances in the tea leaves due to excessively rapid cooling in the early stages are avoided, thus improving the quality of the tea.

[0059] In some other embodiments of this utility model, there are three cooling zones 4, each cooling zone 4 is provided with a separate blower 41; the purification box 5 is divided into three corresponding intervals according to the positions of the multiple cooling zones 4; according to the order in which the transfer box 2 passes, the blower of the first cooling zone 401 uses a hot air blower, and the blowers of the second cooling zone 402 and the third cooling zone 403 use a normal temperature blower. The waste heat air in the purification box 5 interval corresponding to the first cooling zone 401 is filtered and sent to the second cooling zone 402 through the pipe 44. One end of the pipe 44 is connected to the exhaust port 52 of the first cooling zone 401, and the other end is connected to the blower of the second cooling zone 402.

[0060] When using:

[0061] First cooling zone (high temperature zone): Use a gentle breeze of 40~50℃ to reduce the blade temperature from 80℃ to 60℃;

[0062] Second cooling zone (medium temperature zone): The waste heat air from the first cooling zone is pressurized by the fan in the second cooling zone and blows out air at 30~35℃, so that the blade temperature drops to 40℃.

[0063] Third cooling zone (low temperature zone): Use ambient temperature air (25℃) to lower the blade temperature to room temperature.

[0064] When the waste heat air discharged from the first cooling zone 401 is higher than 30~35℃, some room temperature air is added to the second cooling zone 402, and after being adjusted to 30~35℃, it is blown onto the transfer box 2 to cool it down.

[0065] The waste heat air discharged from the second cooling zone 402 can be sent to the blower of the first cooling zone 401 through the pipeline. The first cooling zone 401 reheats it to 40~50℃ and then blows it onto the transfer box 2 for cooling, thereby improving the utilization rate of thermal energy.

[0066] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A tea processing cooling device, characterized in that, include: A cooling platform, wherein the cooling platform has a cooling channel through which tea leaves pass, and the cooling channel is provided with a cooling zone; The transfer box has a hollowed-out bottom structure. After the tea leaves are placed in the transfer box, they enter the cooling zone through the cooling channel to cool the tea leaves. The air outlet is located on the cooling platform corresponding to the position where the transfer box stops in the cooling zone during cooling.

2. The tea processing cooling equipment according to claim 1, characterized in that: It also includes a transmission assembly, which is disposed inside the cooling platform and is used to drive the transfer box to move within the cooling channel.

3. The tea processing cooling equipment according to claim 2, characterized in that: The transmission assembly is a conveyor belt that moves synchronously on both sides of the cooling platform. A crossbar is provided between the two conveyor belts. The distance between two adjacent crossbars is equal to the distance between two adjacent cooling zones. The front end of the transfer box is provided with a hook that engages with the crossbar. The transfer box is movably engaged with the crossbar through the hook and moves as the crossbar moves.

4. The tea processing cooling equipment according to claim 2, characterized in that: The transmission assembly is a conveyor belt that moves synchronously on both sides of the cooling platform. Each side of the conveyor belt has a pin at a relative position. The distance between two adjacent pins on the same side is equal to the distance between two adjacent cooling zones. The transfer box has pins that protrude from both sides of the box body and engage with the pins. The transfer box is engaged with the pins through the pins and moves as the pins move.

5. The tea processing cooling equipment according to claim 1, characterized in that: The transfer box is equipped with a movable mesh cover for confining the tea leaves within the transfer box.

6. The tea processing cooling equipment according to claim 1, characterized in that, The cooling zone includes a blower, which is located at the top of the cooling channel, with its air outlet facing the transfer box.

7. The tea processing cooling equipment according to claim 6, characterized in that: The cooling zone also includes a purification box, which is installed inside the cooling platform. The purification box is located on the side of the air outlet away from the transfer box. After the tea leaves are cooled, the air enters the purification box through the air outlet, is processed, and then discharged outwards.

8. The tea processing cooling equipment according to claim 6, characterized in that: The air outlet of the blower is a wind hood that moves up and down via a lifting structure. When the wind hood moves down, it comes into contact with the transfer box to blow air and cool the tea leaves inside.

9. The tea processing cooling equipment according to claim 6, characterized in that: The cooling zone is provided in multiple locations, and each cooling zone is equipped with a separate blower. The blower uses a hot air blower, while the blower in the final cooling zone uses a normal temperature blower. The outlet air temperature of the plurality of hot air fans decreases sequentially according to the operating path of the transfer box.

10. The tea processing cooling equipment according to claim 7, characterized in that: The cooling zone is provided in multiple locations, and each cooling zone is equipped with a separate blower. The purification box is divided into multiple corresponding intervals according to the positions of the multiple cooling zones; The blower device uses a normal temperature blower, while the blower device in the first cooling zone through which the transfer box passes uses a hot air blower; According to the order in which the transfer box passes through, the waste heat air in the purification box interval corresponding to the first cooling zone is sent to the blower device of the second cooling zone through the pipe, and then sequentially sent down. The blower in the last cooling zone is not connected to the waste heat air from the previous cooling zone.

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