CN220088458U

CN220088458U - Tea wrap machine

Info

Publication number: CN220088458U
Application number: CN202320091960.8U
Authority: CN
Inventors: 苏鸿; 曾庆义; 方王琦; 董源; 洪勇; 苏和生
Original assignee: Zhejiang Fengkai Machinery Co ltd
Current assignee: Zhejiang Fengkai Machinery Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-11-28
Anticipated expiration: 2033-01-31

Abstract

The utility model relates to the technical field of tea processing machinery, in particular to a tea fixation machine, which comprises a frame, an outer cylinder, a roller and a combustion furnace, wherein the outer cylinder is fixedly arranged on the frame, and the roller is arranged in the outer cylinder in a penetrating manner and can rotate circumferentially relative to the outer cylinder; an interlayer space is formed between the outer cylinder and the inner cylinder; the interlayer space comprises a smoke outlet; the air inlet of the circulating fan is communicated with the smoke outlet, and the air outlet of the circulating fan is communicated with the cavity of the air box; one end of the smoke guide pipe is communicated with the cavity of the bellows, and at least part of the smoke guide pipe extends into the roller along the axial direction of the roller from the feeding side of the roller to form a smoke exhaust section, and a plurality of smoke outlets are formed in the peripheral wall of the smoke exhaust section. In this scheme can carry out the reutilization to exhaust flue gas, make it get into the cylinder again in to preheat tealeaves, so be equivalent to recycling to the heat resource, be favorable to the energy saving, save processing cost.

Description

Tea wrap machine

Technical Field

The utility model relates to the technical field of tea processing machinery, in particular to a tea fixation machine.

Background

The tea processing step mainly comprises the steps of destroying and passivating oxidase activity in fresh tea leaves at high temperature, inhibiting enzymatic oxidation of tea polyphenol and the like in the fresh tea leaves, evaporating partial moisture of the fresh tea leaves, softening the tea leaves, facilitating rolling and forming, dispersing green odor and promoting formation of good aroma.

The method mainly comprises the step of heating, namely heating the wall of a roller by using high-temperature flue gas generated by combustion of a natural gas combustion furnace, so as to realize high-temperature fixation of tea leaves in the roller; however, the existing drum-type water-removing machine directly discharges the flue gas of the combustion furnace after heating the drum wall of the drum, however, the high-temperature flue gas still has high heat, and the high-temperature flue gas is directly discharged, so that the heat waste is definitely caused, and the improvement is still needed.

Disclosure of Invention

In order to solve at least one technical problem mentioned in the background art, the utility model aims to provide a tea fixation machine.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the tea wrap machine comprises a frame, an outer cylinder, a roller and a combustion furnace, wherein the outer cylinder is fixedly arranged on the frame, and the roller is arranged in the outer cylinder in a penetrating manner and can rotate circumferentially relative to the outer cylinder; an interlayer space is formed between the outer cylinder and the inner cylinder, and a smoke outlet of the combustion furnace is communicated with the interlayer space to guide smoke into the interlayer space; the interlayer space comprises a smoke outlet; the rotary drum comprises a feeding side and a discharging side, the water-removing machine further comprises a circulating fan, an air box with a cavity inside and a smoke guide pipe, an air inlet of the circulating fan is communicated with a smoke outlet, and an air outlet of the circulating fan is communicated with the cavity of the air box; one end of the smoke guide pipe is communicated with the cavity of the bellows, and at least part of the smoke guide pipe extends into the roller along the axial direction of the roller from the feeding side of the roller to form a smoke exhaust section, and a plurality of smoke outlets are formed in the peripheral wall of the smoke exhaust section.

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

firstly, in the scheme, by arranging the bellows, the circulating fan and the smoke guide pipe, when natural gas is introduced into the combustion furnace for combustion, high-temperature smoke generated by the combustion enters an interlayer space to heat the wall of the roller, and along with the rotation of the roller, tea leaves in the roller are heated by the wall of the heated roller, so that the fixation of tea leaves is realized;

meanwhile, the high-temperature flue gas in the interlayer space is finally discharged through the smoke outlet and is led into the cavity of the bellows by the circulating fan, then enters the smoke guide pipe through the cavity, finally is led into the roller through the smoke outlet on the smoke discharge section of the smoke guide pipe, and the high-temperature flue gas in the roller can play a role in heating and preheating the tea leaves in the roller.

In addition, be worth noting, in this scheme through exhaust port exhaust high temperature flue gas is not simple in directly discharging into the cylinder, but makes the smoke guide pipe form the section of discharging fume that a part extends into in the cylinder, utilizes the apopore on the section of discharging fume to discharge into in the cylinder, and the advantage of design like this lies in: considering that the tea leaf de-enzyming process should be performed in a manner of meeting the temperature gradient, namely the heating temperature of the tea leaf de-enzyming process should be higher at the position closer to the feeding side of the roller, the smoke guide pipe is at least partially extended into the roller from the feeding side of the roller along the axial direction of the roller to form a smoke discharging section, so that smoke is discharged into the roller along the radial direction within the range of the length of the smoke discharging section, the region within the range of the smoke discharging section is a region in which the smoke is directly discharged, the region is equivalent to a high temperature region, the smoke is concentrated in the region first, the temperature of the region is higher, and then flows to the discharging side, so that the temperature of the region in the roller is higher than the temperature of the region in the roller close to the discharging side, and the tea leaf is heated and preheated with the temperature gradient.

Preferably, the three-way pipe is connected to the smoke outlet and comprises a first end, a second end and a third end which are communicated with each other, the first end of the three-way pipe is communicated with the smoke outlet, the second end of the three-way pipe is communicated with an air inlet of the circulating fan, the third end of the three-way pipe is communicated with the external environment, and regulating valves are arranged at the second end and the third end of the three-way pipe.

Preferably, a screw conveyor for conveying tea leaves into the roller is arranged on the feeding side of the roller, and the screw conveyor is positioned between the feeding side of the roller and the air box; the spiral conveyor comprises a cylinder body, a rotating shaft, a spiral blade and a driving motor for driving the rotating shaft to rotate, wherein the cylinder body comprises a feeding port and a discharging port, and the cylinder body is fixed on a frame and can rotate relative to the cylinder body; the rotary shaft is of a hollow tubular structure, one end of the rotary shaft is communicated with the bellows, the other end of the rotary shaft is connected with a smoke exhaust pipe, the smoke exhaust pipe and the rotary shaft integrally form the smoke guide pipe, and at least part of the smoke exhaust pipe forms the smoke exhaust section.

Preferably, the bellows is connected with turntables in a rotating manner on two opposite side walls along the axial direction of the rotating shaft, the turntables are connected through a connecting piece so as to enable the turntables to be positioned relatively, the turntables close to one side of the rotating shaft are fixed with the end part of the rotating shaft, the other turntable is driven to rotate by a driving motor, and the rotating shaft and the two turntables are coaxially arranged.

Preferably, the air outlet of the circulating fan is communicated with the bottom of the cavity of the air box.

Preferably, one end of the smoke guide pipe extending into the roller forms a closed end for a closed structure, or one end of the smoke guide pipe extending into the roller forms a closed end for a closed structure, and the smoke outlet is also formed in the closed end.

Preferably, a discharging side of the roller is provided with a moisture discharging cover, the moisture discharging cover is fixedly kept with the frame, and the roller is rotationally connected with the moisture discharging cover; the bottom of the wet discharging cover forms a discharging opening, the top of the wet discharging cover forms a wet discharging opening, and a movable first cover plate is arranged at the position of the wet discharging opening.

Preferably, a rotating shaft is fixedly arranged at the middle position of the bottom of the first cover plate, the rotating shaft is arranged on the moisture removing cover and can circumferentially rotate and axially move relative to the moisture removing cover, one end of the rotating shaft extends out of the moisture removing cover and is connected with an elastic piece, the other end of the rotating shaft extends out of the moisture removing cover and is bent to one side to form a clamping rod section, an arc-shaped clamping plate is arranged on the outer side wall of the moisture removing cover corresponding to one side of the clamping rod section, and the circle center of the arc-shaped clamping plate is coaxial with the axis of the rotating shaft; the arc-shaped clamping plate is circumferentially provided with a plurality of bayonets for clamping the clamping rods, and in a natural state, the rotating shaft drives the clamping rod sections to be kept in the bayonets under the elasticity of the elastic piece.

Preferably, a second cover plate capable of moving along the axial direction of the roller and an adjusting piece for driving the second cover plate to move along the axial direction are arranged in the dehumidifying cover.

Preferably, the adjusting piece comprises a screw, and the second cover plate is driven to axially move by the rotation of the screw.

Additional advantages and effects of the utility model are set forth in the detailed description and drawings.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an axial cross-sectional view of the present utility model;

FIG. 3 is a partial schematic view of the feed side position of the drum of the present utility model;

FIG. 4 is a partial cross-sectional view of the feed side position of the drum of the present utility model;

FIG. 5 is a cross-sectional view of the moisture removal hood;

FIG. 6 is a cross-sectional view of the position of the moisture removal port of the moisture removal hood;

fig. 7 is a cross-sectional view of the smoke exhaust pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, the present embodiment provides a tea leaf enzyme deactivating machine, and referring to fig. 2, the tea leaf enzyme deactivating machine includes a frame 1, an outer barrel 2, a roller 3, and a combustion furnace, which is remarkable in that, because high-temperature flue gas generated by combustion of the combustion furnace is finally discharged into the roller 3 and contacts with tea leaves, in the present embodiment, the combustion furnace combusts with natural gas as fuel, and the main component of the natural gas is methane, so that the flue gas generated after combustion basically does not contain toxic substances, and edible safety of the tea leaves is ensured.

As shown in fig. 2, the outer cylinder 2 is fixedly mounted on the frame 1 in a horizontal manner, the roller 3 and the outer cylinder 2 are coaxially arranged, and the roller 3 is arranged in the outer cylinder 2 in a penetrating manner and can rotate circumferentially relative to the outer cylinder 2; for driving the drum 3 to rotate, the present embodiment further includes a motor (not shown in the drawing for viewing angle reasons) for driving the drum 3 to rotate, the motor is mounted on the frame 1, and a gear transmission, or a belt transmission, may be adopted between the motor and the drum 3.

One end of the roller 3 is used as a feeding side 21 for tea to enter the roller 3, and the other corresponding end is used as a discharging side 22 for tea after fixation to be led out.

The interlayer space 31 is formed between the outer cylinder 2 and the peripheral wall of the inner cylinder, the structure of the combustion furnace mainly comprises a furnace body 5 with a furnace cavity 51 and a burner (not shown in the figure) connected with the furnace cavity 51 of the furnace body 5, the furnace body 5 is positioned at the bottom of the outer cylinder 2, a smoke outlet 511 communicated with the interlayer space 31 and the furnace cavity 51 is formed at the top of the furnace body 5, natural gas is introduced into the furnace cavity 51 through the burner and is ignited in the furnace cavity 51, so that the natural gas is combusted in the furnace cavity 51 to form high-temperature smoke, the high-temperature smoke can be introduced into the interlayer space 31 through the smoke outlet 511 to heat the peripheral wall of the roller 3, along with the rotation of the roller 3, the wall of the roller 3 after the tea in the roller 3 is heated, and the fixation of the tea is realized.

In addition, in order to ensure that the temperature at the position of the drum 3 near the feeding side 21 is higher than that at other positions of the drum 3, the smoke outlet 511 is located near the feeding side 21 of the drum 3 in the present embodiment.

As shown in fig. 2, in order to discharge the high-temperature flue gas in the interlayer space 31, a smoke outlet 311 communicating with the interlayer space 31 is provided at the top of the outer cylinder 2 on the side close to the discharge side 22 of the inner cylinder, and the flue gas in the interlayer space 31 is finally discharged from the smoke outlet 311.

Referring to fig. 2-4, the water-removing machine further comprises a circulating fan 4, an air box 7 with a cavity inside, and a smoke guide pipe, wherein an air inlet of the circulating fan 4 is communicated with a smoke outlet 311 through a circulating pipe 41, and an air outlet of the circulating fan 4 is communicated with the cavity of the air box 7 through a return air pipe 42.

One end of the smoke guide pipe is communicated with the cavity of the bellows 7, and the smoke guide pipe at least partially extends into the roller 3 from the feeding side 21 of the roller 3 along the axial direction of the roller 3 to form a smoke exhaust section, and a plurality of smoke outlet holes 431 are formed in the peripheral wall of the smoke exhaust section.

So, the high temperature flue gas in the intermediate layer space 31 can finally be discharged through the exhaust port 311, and be introduced into the cavity of bellows 7 by circulating fan 4, then in the cavity gets into the smoke guide pipe, finally let in cylinder 3 by the smoke outlet 431 on the section of discharging fume of leading the smoke pipe, the high temperature flue gas in entering cylinder 3 alright play the effect of heating and preheating to tealeaves in the cylinder 3, so compared with traditional direct exhaust of flue gas, this embodiment can carry out the reutilization to the exhaust flue gas, make it get into in the cylinder 3 again and preheat tealeaves, so be equivalent to recycling the heat resource, be favorable to the energy saving, save processing cost.

In addition, it should be noted that, in the present embodiment, the high-temperature flue gas discharged through the flue outlet 311 is not simply directly discharged into the drum 3, but forms a portion of the flue pipe extending into the flue section in the drum 3, and the flue gas is discharged into the drum 3 through the flue outlet 431 on the flue section, so the design has the advantages that: considering that the tea leaf de-enzyming process should be performed in a manner of satisfying a temperature gradient, namely, the heating temperature of the tea leaf de-enzyming process should be higher at a position closer to the feeding side 21 of the roller 3, so that the smoke guide pipe extends into the roller 3 along the axial direction of the roller 3 at least partially to form a smoke exhaust section, so that smoke is discharged into the roller 3 along the radial direction from the range of the length of the smoke exhaust section, the region in the range of the smoke exhaust section is a region in which the smoke is directly discharged, the region is equivalent to a high temperature region, the smoke is concentrated in the region first, the temperature of the region is higher, and then flows to the side of the discharging side 22, so that the temperature of the region in the roller 3 is higher than the temperature of the region in the roller 3 close to the discharging side 22, and the tea leaf is heated and preheated in a temperature gradient.

In addition, in order to adjust the amount of the flue gas drawn into the drum 3 by the circulating fan 4, in this embodiment, the exhaust port 311 is connected with a three-way pipe 312, the three-way pipe 312 includes a first end, a second end and a third end that are mutually communicated, the first end of the three-way pipe 312 is communicated with the exhaust port 311, the second end is communicated with the air inlet of the circulating fan 4 by the circulating pipe 41, the third end is directly communicated with the external environment, and the second end and the third end are both provided with adjusting valves, and the air output (or the flue gas output) of the second end and the third end is respectively adjusted by the two adjusting valves; so the flue gas of exhaust port 311 exhaust can be partly discharged outside by the third end of three-way pipe 312 directly, and another part can be introduced in cylinder 3 by circulating fan 4, and the user can adjust two governing valves according to actual need to realize the regulation of the air output of second end and third end.

In addition, in this embodiment, a plurality of spiral guide ribs 32 are disposed on the inner peripheral wall of the drum 3 and distributed along the axial direction of the drum 3, and the spiral guide ribs 32 have the function that firstly, when the drum 3 rotates, the spiral guide ribs 32 rotate together, so that tea leaves in the drum 3 can be pushed to the discharging side 22 side, and in addition, the spiral guide ribs 32 can lift the tea leaves in the drum 3 when rotating, so that tea leaves can be turned over, and the fixation effect is improved.

In order to facilitate feeding of tea leaves into the drum 3, in this embodiment the feed side 21 of the drum 3 is provided with a screw conveyor for feeding tea leaves into the drum 3, which screw conveyor is located between the feed side 21 of the drum 3 and the air box 7.

Screw conveyors are described in a great deal in the prior art and mainly comprise: referring to fig. 4, a cylinder 61, a shaft 62, a spiral blade 63, and a driving motor for driving the shaft 62 to rotate are shown.

The cylinder 61 is fixed on the frame 1, the feeding side 21 of the roller 3 is rotatably connected with the cylinder 61, and the cylinder 61 is coaxially arranged with the roller 3, so that the roller 3 can circumferentially rotate around the cylinder 61; the top of the cylinder 61 is provided with a feeding hole 611, and one end of the cylinder 61 extends into the roller 3 to form a discharging hole 612.

The rotating shaft 62 is coaxially arranged with the cylinder 61 and is rotatably connected in the cylinder 61, and the helical blade 63 is positioned in the cylinder 61 and is fixed on the rotating shaft 62; in this way, during feeding, tea leaves are introduced into the drum 61 through the feed port 611, and as the spiral blade 63 rotates, the tea leaves are pushed into the drum 3 through the discharge port 612 of the drum 61.

In this embodiment, as shown in fig. 2 and fig. 4, the rotating shaft 62 is of a hollow tubular structure, one end of the rotating shaft 62 is communicated with the bellows 7, the other end is coaxially connected with the smoke exhaust pipe 43, the smoke exhaust pipe 43 and the rotating shaft 62 integrally form the smoke guide pipe, and the smoke exhaust pipe 43 forms the smoke exhaust section. By the arrangement, the flue gas in the bellows 7 can be discharged into the roller 3 from the feeding side 21 of the roller 3 through the flue gas guide pipe, and the existence of the flue gas guide pipe can not interfere with the normal rotation of the roller 3.

In order to enable the driving motor to drive the rotating shaft 62 to rotate, in this embodiment, as shown in fig. 4, two opposite side walls of the bellows 7 along the axial direction of the rotating shaft 62 are rotatably connected with rotating discs 71, and the two rotating discs 71 are connected by a connecting piece so as to keep the two rotating discs positioned relatively, wherein the connecting piece can adopt a connecting rod 72, the two rotating discs 71 are fixed by the connecting rod 72, the rotating disc 71 near one side of the rotating shaft 62 is fixed with the end of the rotating shaft 62, and the rotating shaft 62 penetrates through the rotating disc 71 to be communicated with the inner cavity of the bellows 7; the other turntable 71 is driven to rotate by a driving motor, for example, a power shaft 711 is coaxially fixed on the outer side of the turntable 71, and the power shaft 711 and the driving motor adopt chain transmission or belt transmission; the rotating shaft 62 and the two turntables 71 are coaxially arranged.

In addition, in order to reduce some of the fixed impurities in the flue gas from being introduced into the drum 3 along with the flue gas, in this embodiment, as shown in fig. 4, the air outlet of the circulating fan 4 is communicated with the bottom of the cavity of the bellows 7 through the return air pipe 42, which is equivalent to the flow of the flue gas under the bellows 7, so that some of the fixed impurities mixed in the flue gas can be settled in the bellows 7 under the dead weight, thereby reducing the impurities from being brought into the drum 3.

In order to reduce or avoid the exhaust of the smoke from the end of the smoke guide tube extending into the roller 3, in this embodiment, the end of the smoke guide tube extending into the roller 3 forms a closed end for the closed structure.

As another alternative embodiment, as shown in fig. 7, the end of the smoke guiding tube extending into the drum 3 (i.e. the end of the smoke discharging tube 43 away from the rotating shaft 62) forms a closed end for a closed structure, and the smoke outlet 431 is also formed on the closed end.

In this embodiment, as shown in fig. 2 and fig. 5, the discharging side 22 of the drum 3 is provided with the moisture removing cover 8, the moisture removing cover 8 is fixed on the frame 1 and is kept fixed with the frame 1, and the discharging side 22 of the drum 3 is rotationally connected with the moisture removing cover 8, so as to ensure that the drum 3 rotates without driving the moisture removing cover 8 to rotate.

A discharging opening 82 is formed at the bottom of the moisture removing cover 8, and the tea leaves after fixation fall into the moisture removing cover 8 from the discharging side 22 of the roller 3 and are discharged from the discharging opening 82; the top of the moisture discharging cover 8 is provided with a moisture discharging port 81, and moisture generated by deactivation of enzymes in the roller 3 is discharged from the moisture discharging port 81.

In order to control the moisture removal amount of the moisture removal opening 81, the moisture removal opening 81 is provided with a movable first cover plate 811, specifically:

as shown in fig. 5 and 6, the moisture discharging opening 81 has a substantially rectangular structure, and the first cover plate 811 also has a rectangular plate-like structure; and the middle position of the bottom of the first cover plate 811 is fixedly provided with a rotating shaft 812, the rotating shaft 812 is arranged on the moisture removing cover 8 and can perform circumferential rotation and axial movement relative to the moisture removing cover 8, one end of the rotating shaft 812 extends out of the moisture removing cover 8 and is connected with an elastic piece, wherein the elastic piece can adopt a pressure spring 816, is sleeved on the rotating shaft 812, one end of the elastic piece is abutted against a stop block 815 fixed on the rotating shaft 812, and the other end of the elastic piece is abutted against the outer wall of the moisture removing cover 8.

As shown in fig. 6, the other end of the rotating shaft 812 extends out of the moisture removing cover 8 and is bent to one side to form a clamping rod section 813, an arc-shaped clamping plate 814 is arranged on the outer side wall of the moisture removing cover 8 corresponding to one side of the clamping rod section 813, and the center of the arc-shaped clamping plate 814 is coaxial with the axis of the rotating shaft 812; the arc-shaped clamping plate 814 is provided with a plurality of bayonets 8141 along the circumferential direction, into which the clamping rod sections 813 are clamped, and in a natural state, the rotating shaft 812 drives the clamping rod sections 813 to be kept in the bayonets 8141 under the elasticity of the elastic piece.

When the moisture removal amount of the moisture removal opening 81 needs to be adjusted, the clamping rod section 813 is pulled outwards to separate from the current bayonet 8141 by overcoming the elastic force of the pressure spring 816, then the rotating shaft 812 is rotated to drive the first cover plate 811 to rotate together, the shielding area of the first cover plate 811 on the moisture removal opening 81 is changed, the moisture removal amount adjustment of the moisture removal opening 81 is achieved, then the clamping rod section 813 is clamped into the corresponding bayonet 8141, and the clamping rod section 813 is automatically pulled to be clamped into the bayonet 8141 under the elastic force of the pressure spring 816.

In addition, as shown in fig. 5, the second cover plate 83 capable of moving axially along the drum 3 and an adjusting member for driving the second cover plate 83 to move axially are disposed in the moisture removing cover 8, wherein the adjusting member may be a screw 84, specifically, the screw 84 is screwed on the moisture removing cover 8, and the inner end of the screw 84 is connected with the second cover plate 83 in a rotating manner, so that the screw 84 can be driven to move axially by rotating the screw 84, and the second cover plate 83 is driven to move.

Of course, in order to movably guide the second cover plate 83, in this embodiment, a guide rod 85 is fixedly disposed in the moisture-removing cover 8, and the second cover plate 83 is slidably disposed on the guide rod 85.

The second cover 83 serves mainly to control the amount of moisture directly discharged from the discharge side 22 of the drum 3, moisture and tea leaves within the drum 3 being discharged from the axial gap between the discharge side 22 of the drum 3 and the second cover 83, whereas the smaller said gap between the second cover 83 and the discharge side 22 of the drum 3, the less moisture is discharged from the discharge side 22 of the drum 3.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The tea wrap machine comprises a frame, an outer cylinder, a roller and a combustion furnace, wherein the outer cylinder is fixedly arranged on the frame, and the roller is arranged in the outer cylinder in a penetrating manner and can rotate circumferentially relative to the outer cylinder; an interlayer space is formed between the outer cylinder and the inner cylinder, and a smoke outlet of the combustion furnace is communicated with the interlayer space to guide smoke into the interlayer space; the interlayer space comprises a smoke outlet; the rotary drum comprises a feeding side and a discharging side, and is characterized by further comprising a circulating fan, an air box with a cavity inside and a smoke guide pipe, wherein an air inlet of the circulating fan is communicated with a smoke outlet, and an air outlet of the circulating fan is communicated with the cavity of the air box; one end of the smoke guide pipe is communicated with the cavity of the bellows, and at least part of the smoke guide pipe extends into the roller along the axial direction of the roller from the feeding side of the roller to form a smoke exhaust section, and a plurality of smoke outlets are formed in the peripheral wall of the smoke exhaust section.

2. The tea wrap machine of claim 1, wherein the smoke vent is connected with a three-way pipe, the three-way pipe comprises a first end, a second end and a third end which are communicated with each other, the first end of the three-way pipe is communicated with the smoke vent, the second end of the three-way pipe is communicated with an air inlet of the circulating fan, the third end of the three-way pipe is communicated with the external environment, and regulating valves are arranged on the second end and the third end of the three-way pipe.

3. A tea leaf de-enzyming machine according to claim 1, wherein the feed side of the drum is provided with a screw conveyor for conveying tea leaves into the drum, the screw conveyor being located between the feed side of the drum and the air box; the spiral conveyor comprises a cylinder body, a rotating shaft, a spiral blade and a driving motor for driving the rotating shaft to rotate, wherein the cylinder body comprises a feeding port and a discharging port, and the cylinder body is fixed on a frame and can rotate relative to the cylinder body; the rotary shaft is of a hollow tubular structure, one end of the rotary shaft is communicated with the bellows, the other end of the rotary shaft is connected with a smoke exhaust pipe, the smoke exhaust pipe and the rotary shaft integrally form the smoke guide pipe, and at least part of the smoke exhaust pipe forms the smoke exhaust section.

4. A tea leaf enzyme deactivating machine according to claim 3, wherein the bellows is rotatably connected to two opposite side walls along the axial direction of the shaft, the two turntables are connected by a connecting piece so as to keep the two turntables positioned relatively, the turntables near one side of the shaft are fixed to the end of the shaft, the other turntable is driven to rotate by a driving motor, and the shaft and the two turntables are coaxially arranged.

5. The tea wrap machine of claim 1, wherein the air outlet of the circulating fan is in communication with the bottom of the cavity of the air box.

6. The tea wrap machine of claim 1, wherein the end of the smoke guide tube extending into the drum is a closed end formed by a closed structure, or the end of the smoke guide tube extending into the drum is a closed end formed by a closed structure, and the smoke outlet is also formed in the closed end.

7. The tea wrap machine of claim 1, wherein the discharge side of the drum is provided with a moisture removal hood, the moisture removal hood is fixedly held with the frame, and the drum is rotatably connected with the moisture removal hood; the bottom of the wet discharging cover forms a discharging opening, the top of the wet discharging cover forms a wet discharging opening, and a movable first cover plate is arranged at the position of the wet discharging opening.

8. The tea wrap machine according to claim 7, wherein a rotating shaft is fixedly arranged at the middle position of the bottom of the first cover plate, the rotating shaft is arranged on the moisture removal cover and can perform circumferential rotation and axial movement relative to the moisture removal cover, one end of the rotating shaft extends out of the moisture removal cover and is connected with an elastic piece, the other end of the rotating shaft extends out of the moisture removal cover and is bent to one side to form a clamping rod section, an arc-shaped clamping plate is arranged on the outer side wall of one side of the moisture removal cover corresponding to the clamping rod section, and the center of the arc-shaped clamping plate is coaxial with the axis of the rotating shaft; the arc-shaped clamping plate is circumferentially provided with a plurality of bayonets for clamping the clamping rods, and in a natural state, the rotating shaft drives the clamping rod sections to be kept in the bayonets under the elasticity of the elastic piece.

9. A tea wrap machine according to claim 7 wherein the moisture removal hood is provided with a second cover plate movable axially along the drum and an adjustment member for driving the second cover plate to move axially.

10. A tea leaf fixation machine according to claim 9, wherein the adjusting member comprises a screw, and the second cover plate is driven to axially move by rotation of the screw.