CN113767996B - Multistage circulating drying device for black tea processing and drying method thereof - Google Patents

Abstract

The application relates to a multi-stage circulating drying device for black tea processing and a drying method thereof. A multi-stage circulating drying device for black tea processing includes a bottom plate, and also includes: a circulating drying mechanism, which is connected to the top of the bottom plate through a support plate, and the circulating drying mechanism Including the raw fire drying chamber, the foot fire drying chamber and the Titian drying chamber; the refueling transition area is set in the raw fire drying chamber and the foot fire drying chamber, the raw fire drying chamber and the Titian drying chamber, and the foot fire drying chamber through the partition assembly. Between the chamber and the Titian drying chamber; the cover plate, connected to the top of the circulating drying mechanism, and a placing rack is arranged on the bottom wall of the cover plate; the circulation pipe is connected to the top of the cover plate; the first drive component is connected to the top of the bottom plate through the support frame The second drive assembly is arranged on the top of the bottom plate; the present invention can effectively avoid the situation of a lot of waste when drying the tea leaves, avoid the situation that the staff will cause harm to the body during operation, and can improve the drying efficiency of the tea leaves. .

Description

A kind of multi-stage circulating drying device for black tea processing and drying method thereof

technical field

The invention relates to a multi-stage thermal cycle drying device for Gongfu black tea and a drying method thereof, belonging to the technical field of tea processing devices.

Background technique

There are many kinds of tea, and black tea is one of them. Black tea is a fully fermented tea, which is made from suitable new teeth leaves of tea trees as raw materials, and is refined through a series of technological processes such as withering, rolling (cutting), fermentation, and drying.

In the process of black tea processing, it needs to be dried. Drying is usually the last step in the black tea processing process. The purpose is to quickly stop the activity of enzymes in the tea leaves, fix the quality components in the leaves, and exert the aroma. The drying process is divided into: There are three stages of Maohuo, Zuhuo and Titian, and the water removal and drying temperature of each stage are decreased in turn.

After searching, the Chinese invention patent with the publication number CN112450287A discloses a multi-stage circulating drying device for black tea processing. The box and the raw fire box are connected by a ventilation pipe, the inside of the full fire box is placed with a drying component, the top of the raw fire box is welded with a blast box, and the inner wall of the blast box is fixedly connected with a fan, so An air intake mechanism is arranged above the blower and located on the side wall of the blower box, and evenly distributed electric heating pipes are arranged below the blower. The second surface of the ventilation pipe is provided with a solenoid valve 1; through the cooperation between the ventilation pipes, not only the air circulation between the raw fire box to the foot fire box and back to the raw fire box can be realized, but also the air flow from the foot fire box to the raw fire box can be realized. The air circulation between the return and foot fire boxes can change the direction of air circulation according to the difference between the drying time of the hair fire and the drying time of the foot fire, so as to meet the operation of alternating circulation and reduce the hot air to be discharged to the outside.

However, this device still has certain shortcomings: 1. Although the device can recycle the heat inside each fire box to a certain extent during processing, it will still cause a lot of heat waste when the drying process is replaced. 2. The device only uses a simple heating device to dry the tea leaves inside, and the drying efficiency is relatively low, which affects the drying efficiency of the tea leaves; Larger, thus causing certain harm to the health of the staff.

Therefore, we have improved this and proposed a multi-stage circulating drying device for black tea processing.

SUMMARY OF THE INVENTION

(1) The technical problems to be solved by the present invention are: 1. Although the existing device can recycle the heat inside each fire box to a certain extent during processing, it will still cause a large amount of heat to occur when the drying process is replaced. The situation of waste; 2. The existing device only uses a simple heating device to dry the tea leaves inside, and the drying efficiency is relatively low, which affects the drying efficiency of the tea leaves; 3. When the existing device performs the refueling operation for each process , the internal temperature is large, which will cause certain damage to the health of the staff.

(2) Technical solutions

In order to achieve the above-mentioned purpose of the invention, the present invention provides a multi-stage circulating drying device for black tea processing, which includes a bottom plate and also includes:

The circulating drying mechanism is connected to the top of the bottom plate through the support plate, and the circulating drying mechanism includes a fur-fire drying chamber, a foot-fire drying chamber and a Titian drying chamber, and the fur-fire drying chamber, the foot-fire drying chamber and the Titian drying chamber are respectively It is used for rough fire treatment, foot fire treatment and Titian treatment of black tea leaves;

The refueling transition area is set between the raw fire drying chamber and the foot fire drying chamber, the raw fire drying chamber and the Titian drying chamber, and the foot fire drying chamber and the Titian drying chamber through the partition assembly, and is used for the circulation inside the drying mechanism. Transition and loading and unloading of black tea;

The cover plate is connected to the top of the circulating drying mechanism, and a placing rack is arranged on the bottom wall of the cover plate, and the placing rack cooperates with the circulating drying mechanism and the material changing transition area;

The heating components are separately arranged in the fur-fire drying chamber, the foot-fire drying chamber and the inside of the Titian drying chamber, respectively, for maintaining the temperature inside the fur-fire drying chamber, the foot-fire drying chamber and the Titian drying chamber respectively;

A circulating pipeline is connected to the top of the cover plate, and the circulating pipeline connects the wool drying chamber, the foot fire drying chamber and the Titian drying chamber in sequence, and is used for the connection between the wool drying chamber, the foot fire drying chamber and the Titian drying chamber. the circulation of thermal air;

The first drive assembly is connected to the top of the bottom plate through the support frame, and is used to drive the circulating drying mechanism for transmission;

The second driving component is arranged on the top of the bottom plate, and its output end is matched with the placing rack to improve the drying efficiency of black tea.

As a preferred technical solution of the present application, the first drive assembly includes a first drive motor, the first drive motor is arranged on the top of the support frame, and the output end of the first drive motor passes through the support frame and is connected to the cover plate .

As a preferred technical solution of the present application, fans and electromagnetic valves are arranged on the outer wall of the circulation pipeline for conveying and drying the hot air flow, and a connecting column is arranged on the top of the supporting plate, and the connecting column is far from the supporting plate. One end is connected to the bottom wall of the cover plate, the side wall of the connecting column is cut with a clamping groove, and the partition plate assembly is matched with the clamping groove.

As a preferred technical solution of the present application, the baffle plate assembly is composed of four sets of baffle plates that are slidably matched with each other, a telescopic assembly is arranged between the four groups of the baffle plates that cooperate with each other, and a telescopic assembly is arranged between the telescopic assembly and the cover plate There is a linkage mechanism, and the outermost baffle plate is fixedly arranged on the top wall of the support plate.

As a preferred technical solution of the present application, the telescopic assembly includes a scissors-type link frame, one end of the scissor-type link frame is connected to the inner wall of the strip groove cut out on the inner wall of the outermost baffle, and the other end is connected to the innermost The baffles are connected, and the middle two groups of the baffles are connected in rotation with the scissor link frame.

As a preferred technical solution of the present application, the linkage mechanism includes intermittently arranged teeth, a first gear, a rotating shaft, a winding wheel and a cable, the teeth are connected to the outer wall of the cover plate, and the rotating shaft is rotatably connected to the most Inside the outer baffle, and one end of the rotating shaft passes through the top of the outermost baffle and extends outward, the first gear is connected to the top wall of the rotating shaft, and the first gear is meshed and connected with the teeth, so The winding wheel is arranged on the outer wall of the rotating shaft, one end of the cable is arranged on the outer wall of the winding wheel, and the other end is arranged on the outer wall of the second group of baffles, and the outermost baffle and its adjacent baffles are connected. A reset elastic member is arranged between.

As a preferred technical solution of the present application, the teeth are intermittently provided with three groups, the first gear and the baffle assembly are mutually matched with six groups, and the three groups of the teeth and the six groups of the first gear are all matched with each other .

As a preferred technical solution of the present application, the second drive assembly includes a second drive motor, a rotating seat, a gear ring and a second gear, the second drive motor is connected to the top wall of the bottom plate, and the rotating seat is fitted and rotated Connected to the top wall of the support plate, the gear ring is arranged on the inner wall of the rotating seat, the second gear is arranged on the bottom wall of the placing rack, and the second gear is meshed with the gear ring, and the outer wall of the placing rack is A spoiler is also provided.

As a preferred technical solution of the present application, a door body is arranged in the refueling transition zone, a handle is arranged on the outer wall of the door, and a door is arranged between the door body and the cover plate, the partition assembly and the support plate. sealing strip.

A drying method of a multi-stage circulating drying device for black tea processing, specifically comprising the following steps:

S1: In the initial use, the placing rack is located in the transition area of the refueling, the door is opened, then the tea leaves to be dried are placed on the placing rack, the door is closed, and the heating components are activated at the same time to keep the heating components dry The temperature inside the chamber, the foot fire drying chamber and the Titian drying chamber can be used to dry the tea leaves well;

S2: When it is necessary to send the tea leaves inside the refueling transition area into the circulating drying mechanism, start the first drive motor to drive the cover plate connected to the output end to rotate, and the cover plate will drive the placement rack connected to it to rotate. At the same time, the teeth intermittently arranged on the outer wall are driven to rotate, and when the teeth rotate, it will drive the first gear meshed with it to rotate, thereby driving the rotating shaft to rotate, and then driving the winding wheel connected to the outer wall to rotate and The cable is reeled, and when the cable is reeled, the telescopic component is driven to shrink, and then the four sets of baffles that are slidingly matched with each other are driven to shrink. At this time, the circulating drying mechanism and the adjacent refueling transition area will be connected to each other. The rotation of the placing rack and the shrinking of the baffle assembly are carried out at the same time, and then the placing rack and the tea leaves inside the circulating drying mechanism will enter the interior of the refueling transition area. The gears miss each other. At this time, the reset elastic member will make the baffle assembly separate the refueling transition zone and the circulating drying mechanism from each other again. At this time, the loading and unloading can easily avoid the circulating drying. The situation where the internal temperature of the institution is high and causes harm to the health of the staff;

S3: When it is necessary to put the tea leaves in the refueling transition area into the next process, continue to start the first drive motor to drive the cover plate to rotate, and the placing rack and the partition plate assembly will repeat the operation process as in step S2, and make The racks and the tea leaves in the transition zone are fed into the next circulating drying mechanism for drying. Therefore, the device can effectively avoid a lot of waste of heat inside the circulating drying mechanism when the drying process is replaced. environmental protection and saving effect;

S4: When the placing rack is inside the circulating drying mechanism, start the second drive motor to drive the rotating base connected to its output end to rotate, and then drive the gear ring connected to its inner wall to rotate, thereby driving the second drive motor connected to its meshing connection to rotate. The gear rotates, and then drives the rack to rotate, so that the tea leaves on the rack can be heated more evenly, thereby improving the drying effect of the tea leaves. The corresponding fluidity can improve the dispersibility of the hot air flow, so that the tea leaves on the rack can be heated evenly, thereby effectively improving the drying efficiency of the tea leaves;

S5: The circulation pipes set up can satisfy the circulation of hot air between the wool drying chamber, the foot fire drying chamber and the Titian drying chamber, and the residual heat of the wool drying chamber, the foot fire drying chamber and the Titian drying chamber can be generated. To achieve good recycling, reduce the discharge of hot air to the outside, and avoid waste of heat. At the same time, through the set fan and electromagnetic valve, it can effectively control the circulation of hot air and avoid the internal temperature of the circulating drying mechanism being too high. damage to the tea leaves.

(3) Beneficial effects

The multi-stage circulating drying device for processing black tea provided by the present invention has the following beneficial effects:

1. Through the set material change transition zone, the effect of effectively saving heat when the process is replaced, solves the problem that a large amount of heat is wasted when the drying process is replaced in the prior art;

2. By setting the refueling transition zone, the direct contact between the staff and the circulating drying mechanism can also be effectively avoided, which solves the problem that the internal temperature of each process is relatively large when the refueling operation is performed in the prior art. The health of the staff has caused certain damage;

3. By setting the first drive assembly and the partition assembly, the tea drying process can be effectively and automatically replaced and the operation of loading and unloading can be facilitated, which can not only avoid the waste of a large amount of heat, but also effectively avoid the staff and circulation. The situation where the high temperature inside the drying mechanism will cause harm to the body;

4. The circulation pipes, fans and electromagnetic valves are set to realize the circulation of hot air between the wool drying chamber, the foot drying chamber and the Titian drying chamber. The waste heat of the drying chamber of Titian plays a good role in recycling, reducing the discharge of hot air to the outside and avoiding the waste of heat;

5. The second driving component and the spoiler are arranged to improve the uniformity of the tea leaves on the rack, thereby effectively drying the tea leaves, and solving the problem of low drying efficiency of the tea leaves in the prior art.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic structural diagram 1 of a multi-stage circulating drying device for black tea processing provided by the application.

FIG. 2 is a second structural schematic diagram of a multi-stage circulating drying device for black tea processing provided by the application.

FIG. 3 is a front view of the multi-stage circulating drying device for black tea processing provided by the application.

FIG. 4 is a schematic diagram 1 of the internal structure of the multi-stage circulating drying device for black tea processing provided by the application.

FIG. 5 is a second schematic diagram of the internal structure of the multi-stage circulating drying device for black tea processing provided by the application.

FIG. 6 is a top view of the internal structure of the multi-stage circulating drying device for black tea processing provided by the application.

FIG. 7 is a schematic structural diagram of the partition plate assembly of the multi-stage circulating drying device for black tea processing provided by the application.

FIG. 8 is a schematic structural diagram of the partition assembly and the telescopic assembly of the multi-stage circulating drying device for black tea processing provided by the application.

Fig. 9 is an enlarged view of part A in Fig. 5 of the multi-stage circulating drying device for black tea processing provided by the application.

Indicated in the figure:

100, bottom plate; 101, support plate; 102, connecting column; 200, circulating drying mechanism; 201, wool drying chamber; 202, foot fire drying chamber; 203, Titian drying chamber; 204, placing rack; 2041, spoiler plate; 205, refueling transition zone; 2051, door body; 2052, handle; 206, cover plate; 300, circulation pipeline; 301, fan; 302, electromagnetic valve; 400, first drive assembly; 401, support frame; 402 500, the second drive assembly; 501, the second drive motor; 502, the rotating seat; 503, the gear ring; 504, the second gear; 600, the partition assembly; 601, the baffle plate; 602, the scissors 603, teeth; 604, first gear; 605, shaft; 606, winding wheel; 607, cable; 608, reset elastic member.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.

Example:

As shown in Figures 1-6, this embodiment proposes a multi-stage circulating drying device for black tea processing, comprising a bottom plate 100, and further comprising:

The circulating drying mechanism 200 is connected to the top of the bottom plate 100 through the support plate 101. The circulating drying mechanism 200 includes a hair drying chamber 201, a foot fire drying chamber 202 and a Titian drying chamber 203, a hair fire drying chamber 201, a foot fire drying chamber 202 and The Titian drying chamber 203 is respectively used for rough fire treatment, foot fire treatment and Titian treatment for black tea leaves;

The refueling transition area 205 is set between the raw fire drying chamber 201 and the foot fire drying chamber 202, the raw fire drying chamber 201 and the Titian drying chamber 203, and the foot fire drying chamber 202 and the Titian drying chamber 203 through the partition assembly 600 , which is used for the transition and loading and unloading of the black tea inside the circulating drying mechanism 200, which can effectively prevent a large amount of heat being wasted when the drying process is replaced, and can avoid the need for each process. , the internal temperature is relatively large, which causes certain damage to the health of the staff;

The cover plate 206 is connected to the top of the circulating drying mechanism 200, and a placing rack 204 is arranged on the bottom wall of the cover plate 206, and the placing rack 204 cooperates with the circulating drying mechanism 200 and the material changing transition area 205;

The heating components are separately arranged inside the fur fire drying chamber 201, the foot fire drying chamber 202 and the Titian drying chamber 203, respectively, to maintain the temperature inside the fur fire drying chamber 201, the foot fire drying chamber 202 and the Titian drying chamber 203 respectively ;

The circulation pipe 300 is connected to the top of the cover plate 206, and the circulation pipe 300 connects the hair drying chamber 201, the foot fire drying chamber 202 and the Titian drying chamber 203 in sequence, and is used for the hair fire drying chamber 201 and the foot fire drying chamber 202 The circulation of the hot air between the drying chamber 203 and the drying chamber 203 can satisfy the circulation of the hot air between the drying chamber 201, the drying chamber 202 and the drying chamber 203. The waste heat of the cavity 202 and the Titian drying cavity 203 is used for good recycling, reducing the discharge of hot air to the outside, and avoiding the waste of heat;

The first drive assembly 400 is connected to the top of the bottom plate 100 through the support frame 401, and is used for driving the circulating drying mechanism 200 for transmission;

The second driving assembly 500 is disposed on the top of the bottom plate 100, and the output end of the second driving assembly 500 is matched with the placing rack 204 to improve the drying efficiency of black tea.

As shown in FIG. 1-2 , as a preferred embodiment, on the basis of the above-mentioned manner, the first drive assembly 400 further includes a first drive motor 402 , the first drive motor 402 is arranged on the top of the support frame 401 , the first The output end of the drive motor 402 passes through the support frame 401 and is connected to the cover plate 206 .

As shown in Figures 1-4, as a preferred embodiment, on the basis of the above method, further, a fan 301 and an electromagnetic valve 302 are arranged on the outer wall of the circulation pipe 300 for conveying and drying the hot air, supporting The top of the plate 101 is provided with a connecting column 102, the end of the connecting column 102 away from the support plate 101 is connected to the bottom wall of the cover plate 206, the side wall of the connecting column 102 is drilled with a slot, and the baffle assembly 600 is matched with the slot, while passing through The fan 301 and the electromagnetic valve 302 provided can effectively control the circulation of the hot air, avoid the damage to the tea leaves due to the high temperature inside the circulating drying mechanism 200, and improve the set slot, which can effectively ensure the partition plate The tightness between the assembly 600 and the connecting column 102 avoids the occurrence of uncontrolled mutual circulation of heat flow and damage to the tea leaves.

As shown in FIGS. 5-7 , as a preferred embodiment, on the basis of the above method, further, the baffle plate assembly 600 is composed of four sets of baffle plates 601 that are slidably matched with each other. A telescopic assembly is provided, a linkage mechanism is set between the telescopic assembly and the cover plate 206 , and the outermost baffle 601 is fixedly arranged on the top wall of the support plate 101 . It is convenient to shrink and stretch the baffle assembly 600, and it is convenient for the circulating drying mechanism 200 to communicate with the material change transition area 205, so as to facilitate the replacement of processes and the loading and unloading operations, and avoid the situation of a large amount of heat loss.

As shown in FIGS. 5-7 , as a preferred embodiment, on the basis of the above method, the telescopic assembly further includes a scissor link frame 602 , and one end of the scissor link frame 602 is connected to the inner wall of the outermost baffle 601 On the inner wall of the excavated bar-shaped groove, the other end is connected with the innermost baffle 601, and the middle two sets of baffles 601 are both rotatably connected with the scissor link frame 602. The scissor link frame 602 is provided to facilitate the realization of The expansion and contraction of the baffle plate assembly 600 realizes the communication and closing of the circulating drying mechanism 200 and the refueling transition zone 205 .

As shown in FIG. 1 , FIG. 2 and FIG. 8 , as a preferred embodiment, on the basis of the above method, the linkage mechanism further includes intermittently arranged teeth 603 , a first gear 604 , a rotating shaft 605 , and a winding wheel 606 and cable 607, the teeth 603 are connected to the outer wall of the cover plate 206, the rotating shaft 605 is rotatably connected to the inside of the outermost baffle 601, and one end of the rotating shaft 605 passes through the top of the outermost baffle 601 and extends outward. The gear 604 is connected to the top wall of the rotating shaft 605, and the first gear 604 is meshed with the teeth 603. The winding wheel 606 is arranged on the outer wall of the rotating shaft 605. One end of the cable 607 is arranged on the outer wall of the winding wheel 606, and the other end is arranged on the outer wall of the winding wheel 606. On the outer wall of the second set of baffles 601, and between the outermost baffle 601 and its adjacent baffles 601, a reset elastic member 608 is provided. 200 and the refueling transition zone 205 are in an intercommunication state.

As shown in FIGS. 1-5 , as a preferred embodiment, on the basis of the above method, further, three groups of teeth 603 are intermittently arranged, and six groups of the first gear 604 and the partition plate assembly 600 are arranged in cooperation with each other, and three groups are arranged. The teeth 603 and the six groups of first gears 604 cooperate with each other, which can realize the linkage effect between the circulating drying mechanism 200 and the material changing transition area 205 .

As shown in FIG. 3 , FIG. 4 , FIG. 5 and FIG. 9 , as a preferred embodiment, on the basis of the above-mentioned manner, the second drive assembly 500 further includes a second drive motor 501 , a rotating seat 502 , and a gear ring 503 and the second gear 504, the second drive motor 501 is connected to the top wall of the bottom plate 100, the rotating seat 502 is fitted and rotatably connected to the top wall of the support plate 101, the gear ring 503 is arranged on the inner wall of the rotating seat 502, and the second gear 504 is arranged It is connected with the bottom wall of the placing rack 204, and the second gear 504 is meshed with the gear ring 503. The outer wall of the placing rack 204 is also provided with a spoiler 2041. The uniformity of the heating of the tea leaves on the rack 204, thereby effectively improving the drying efficiency of the tea leaves.

As shown in Figures 1-3, as a preferred embodiment, on the basis of the above-mentioned method, further, a door body 2051 is provided in the refueling transition area 205, a handle 2052 is provided on the outer wall of the door body 2051, and the door body 2051 A sealing strip is arranged between the cover plate 206, the baffle plate assembly 600 and the support plate 101. The door body 2051 and the handle 2052 are arranged to facilitate the refueling operation for the materials in the refueling transition area 205. strips, which can effectively avoid the situation of heat loss.

Specifically, the multi-stage circulating drying device for black tea processing is in operation/use: during initial use, the placing rack 204 is located inside the refueling transition zone 205, the door body 2051 is opened, and then the tea leaves that need to be dried are placed on the placing rack 204, and close the door body 2051, and start the heating assembly at the same time, so that the heating assembly maintains the temperature inside the hair fire drying chamber 201, the foot fire drying chamber 202 and the Titian drying chamber 203, so as to dry the tea leaves well; when When it is necessary to send the tea leaves inside the refueling transition zone 205 into the circulating drying mechanism 200, start the first drive motor 402 to drive the cover plate 206 connected to its output end to rotate, and the cover plate 206 will drive the placement rack 204 connected to it. It rotates, and at the same time drives the teeth 603 intermittently arranged on the outer wall to rotate, when the teeth 603 rotate, it drives the first gear 604 that is meshed with it to rotate, thereby driving the rotating shaft 605 to rotate, which in turn drives the connection on its outer wall. The reeling wheel 606 rotates and rewinds the cable 607. When the cable 607 rewinds, the telescopic assembly is driven to shrink, and then the four sets of baffles 601 that are slidingly matched with each other are driven to shrink. The adjacent refueling transition areas 205 will communicate with each other, the rotation of the placing rack 204 and the shrinkage of the baffle assembly 600 are performed simultaneously, and then the placing racks 204 and the tea leaves inside the circulating drying mechanism 200 will enter the interior of the refueling transition area 205. After it enters the refueling transition area 205, the matched teeth 603 and the first gear 604 miss each other. At this time, the resetting elastic member 608 will make the partition assembly 600 re-renew the refueling transition. The area 205 and the circulating drying mechanism 200 are separated from each other. At this time, when loading and unloading the material, it is convenient to avoid the situation that the internal temperature of the circulating drying mechanism 200 is relatively large and cause harm to the health of the staff. When the tea leaves are placed in the next process, continue to start the first drive motor 402 to drive the cover plate 206 to rotate, the placing rack 204 and the partition plate assembly 600 will repeat the operation process as step S2, and make the inside of the refueling transition zone 205 The placing rack 204 and the tea leaves are sent to the inside of the next circulating drying mechanism 200 for drying treatment, so the device can effectively avoid the situation of a large amount of waste of heat inside the circulating drying mechanism 200 when the drying process is replaced, and play a good environmental protection Saving effect; when the placing rack 204 is inside the circulating drying mechanism 200, the second drive motor 501 is activated to drive the rotating base 502 connected to its output end to rotate, and then drive the gear ring 503 connected to its inner wall to rotate, thereby driving The second gear 504 meshed with it rotates, and then drives the placement rack 204 to rotate, so that the tea leaves on the placement rack 204 can be heated more evenly, thereby improving the drying effect of the tea leaves. The spoiler 2041 provided can effectively Therefore, the hot air flow inside the circulating drying mechanism 200 is correspondingly generated. The fluidity of the tea leaves is improved, and the dispersibility of the hot air flow is improved, so that the tea leaves on the placing rack 204 can be heated evenly, thereby effectively improving the drying efficiency of the tea leaves; the circulation pipes 300 provided can meet the requirements of the hair drying chamber 201 and the foot fire drying chamber 201. The circulation of the hot air between the drying chamber 202 and the Titian drying chamber 203 plays a good role in recycling the waste heat of the wool drying chamber 201, the foot fire drying chamber 202 and the Titian drying chamber 203, and reduces the discharge of the hot air to the outside. To avoid waste of heat, at the same time, the fan 301 and the electromagnetic valve 302 can effectively control the flow of hot air, and avoid damage to the tea leaves due to excessive temperature inside the circulating drying mechanism 200 .

The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should cover within the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a multistage circulation drying device is used in black tea processing, includes bottom plate (100), its characterized in that still includes:

the circulating drying mechanism (200) is connected to the top of the bottom plate (100) through a supporting plate (101), the circulating drying mechanism (200) comprises a gross fire drying cavity (201), a foot fire drying cavity (202) and an aroma raising drying cavity (203), and the gross fire drying cavity (201), the foot fire drying cavity (202) and the aroma raising drying cavity (203) are respectively used for performing gross fire treatment, foot fire treatment and aroma raising treatment on the black tea leaves;

the material changing transition area (205) is arranged between the gross fire drying cavity (201) and the sufficient fire drying cavity (202), between the gross fire drying cavity (201) and the aroma raising drying cavity (203), and between the sufficient fire drying cavity (202) and the aroma raising drying cavity (203) through a partition plate assembly (600) and is used for the transition and the feeding and discharging of the black tea in the circulating drying mechanism (200);

the cover plate (206) is connected to the top of the circulating drying mechanism (200), a placing frame (204) is arranged on the bottom wall of the cover plate (206), and the placing frame (204) is matched with the circulating drying mechanism (200) and the material changing transition area (205) mutually;

the heating components are respectively and independently arranged inside the gross fire drying cavity (201), the foot fire drying cavity (202) and the aroma raising drying cavity (203) and are used for respectively keeping the temperature inside the gross fire drying cavity (201), the foot fire drying cavity (202) and the aroma raising drying cavity (203);

the circulating pipeline (300) is connected to the top of the cover plate (206), the gross fire drying cavity (201), the foot fire drying cavity (202) and the aroma-raising drying cavity (203) are sequentially communicated through the circulating pipeline (300), and hot air flows among the gross fire drying cavity (201), the foot fire drying cavity (202) and the aroma-raising drying cavity (203) are communicated through the circulating pipeline (300);

the first driving assembly (400) is connected to the top of the bottom plate (100) through a supporting frame (401) and is used for driving the circulating drying mechanism (200) to transmit;

the second driving assembly (500) is arranged at the top of the bottom plate (100), and the output end of the second driving assembly is matched with the placing frame (204) and used for improving the drying efficiency of the black tea;

the baffle plate assembly (600) is composed of four groups of baffles (601) which are in sliding fit with each other, a telescopic assembly is arranged between the four groups of baffles (601) which are in sliding fit with each other, a linkage mechanism is arranged between the telescopic assembly and the cover plate (206), and the baffle (601) at the outermost layer is fixedly arranged on the top wall of the support plate (101);

the telescopic assembly comprises a scissor type connecting rod frame (602), one end of the scissor type connecting rod frame (602) is connected to the inner wall of the bar-shaped groove formed in the inner wall of the baffle (601) at the outermost layer, the other end of the scissor type connecting rod frame is connected with the baffle (601) at the innermost layer, and the two middle groups of baffles (601) are rotatably connected with the scissor type connecting rod frame (602);

the linkage mechanism comprises teeth (603) which are arranged intermittently, a first gear (604), a rotating shaft (605), a winding wheel (606) and a cable (607), the teeth (603) are connected to the outer wall of the cover plate (206), the rotating shaft (605) is connected to the interior of the outermost baffle (601) in a rotating mode, one end of the rotating shaft (605) penetrates through the top of the outermost baffle (601) and extends outwards, the first gear (604) is connected to the top wall of the rotating shaft (605), the first gear (604) is meshed with the teeth (603) in a connecting mode, the winding wheel (606) is arranged on the outer wall of the rotating shaft (605), one end of the cable (607) is arranged on the outer wall of the winding wheel (601), the other end of the cable is arranged on the outer wall of the second group of baffles (601), and a reset elastic piece (608) is arranged between the outermost baffle (601) and the baffle (601) adjacent to the outermost baffle.

2. A multi-stage circulating drying apparatus for black tea processing according to claim 1, wherein the first driving assembly (400) comprises a first driving motor (402), the first driving motor (402) is arranged on the top of the supporting frame (401), and the output end of the first driving motor (402) passes through the supporting frame (401) and is connected with the cover plate (206).

3. A multi-stage circulating drying device for black tea processing according to claim 1, wherein the outer wall of the circulating pipeline (300) is provided with a fan (301) and an electromagnetic valve (302) for conveying and drying hot air, the top of the support plate (101) is provided with a connecting column (102), one end of the connecting column (102) far away from the support plate (101) is connected to the bottom wall of the cover plate (206), the side wall of the connecting column (102) is provided with a clamping groove, and the partition plate assembly (600) is matched with the clamping groove.

4. A multi-stage circulating drying apparatus for black tea processing according to claim 1, wherein the teeth (603) are intermittently provided in three sets, the first gear (604) is provided in six sets in cooperation with the diaphragm assembly (600), and the teeth (603) of the three sets and the first gear (604) of the six sets are all provided in cooperation with each other.

5. A multi-stage circulating drying device for processing black tea as claimed in claim 1, wherein the second driving assembly (500) comprises a second driving motor (501), a rotating base (502), a toothed ring (503) and a second gear (504), the second driving motor (501) is connected to the top wall of the bottom plate (100), the rotating base (502) is connected to the top wall of the supporting plate (101) in a jogged and rotating manner, the toothed ring (503) is arranged on the inner wall of the rotating base (502), the second gear (504) is arranged on the bottom wall of the placing rack (204), the second gear (504) is connected with the toothed ring (503) in a meshing manner, and a spoiler (2041) is further arranged on the outer wall of the placing rack (204).

6. A multi-stage circulating drying device for black tea processing according to claim 1, wherein a door body (2051) is cooperatively arranged on the material changing transition region (205), a handle (2052) is arranged on the outer wall of the door body (2051), and sealing strips are arranged among the door body (2051), the cover plate (206), the partition plate assembly (600) and the support plate (101).

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