High-temperature hot blast stove

Abstract

The invention relates to the technical field of hot-blast stoves, in particular to a high-temperature hot-blast stove which comprises a heating furnace, a circulating assembly and a fixation assembly. A heat-conducting channel is arranged in the heating furnace; the circulating assembly comprises an air inlet channel, a heat accumulator and a circulating fan; the fixation assembly comprises an inner cylinder and a collecting device, and the inner cylinder is a sealed cylinder; a material outlet and a material inlet are respectively formed in two ends of the inner cylinder in the axial direction; the heat accumulator, the circulating fan, the air inlet channel, the inner cylinder and the collecting device are connected back to the heat accumulator to form a sealed circulating channel; according to the invention, the sealed cylinder without punching in the side wall is adopted as the inner cylinder, so that airflow can flow along the two end directions of the rotating shaft of the inner cylinder, fresh tea leaves in the inner cylinder fall after reaching the highest point, the falling tea leaves can exchange heat with high-temperature airflow, the temperature is higher, the contact area is larger, and the airflow can be faster; waste heat is recycled through the heat accumulator, and energy conservation is achieved; and the tea leaves are directly blown into a collecting device by airflow without being poured out, so that the steps are saved.

Description

Technical Field

[0001] The invention relates to the technical field of hot blast furnaces, and in particular to a high-temperature hot blast furnace. Background Art

[0002] High-temperature hot air furnaces are used in the tea-making process of withering, and can continuously provide high-temperature hot air to dehydrate and dry the tea leaves; however, in the prior art, the high-temperature hot air provided by the high-temperature hot air furnace is mostly around 300°C. This is not because the high-temperature hot air furnace can only provide 300°C high-temperature hot air, but because the withering machines used for tea withering are all drum-type, and the side wall of the drum is provided with multiple air inlets, and then the hot air of the high-temperature hot air furnace flows through the air inlet of the outer wall into the drum, which leads to many problems in the cooperation between the high-temperature hot air furnace and the withering machine, including:

[0003] First, when the hot air flow enters between the drum and the outer shell of the withering machine, it will first heat the drum, causing the tea leaves on the inner wall of the drum to stick to the inner wall due to the heat. The tea leaves will be overheated and have a burnt smell, and the subsequent tea soup will be too dark and opaque. At the same time, the heat is difficult to diffuse into the center of the drum, which will cause the problem of inconsistent with the degree of withering. Second, most withering machines are open, so that the waste heat of the high-temperature hot air furnace is directly discharged into the air, which causes waste and also causes dust pollution of the tea leaves. Therefore, there is a need for a high-temperature hot air furnace that can ensure that the tea leaves are heated evenly and reduce heat waste. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a high-temperature hot air furnace which can ensure that tea leaves are heated evenly and reduce heat waste.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A high-temperature hot blast furnace, comprising a heating furnace, a circulation component and a killing component;

[0007] A heat conduction channel is provided in the heating furnace;

[0008] The circulation component includes an air inlet, a heat storage body, a circulation fan, a blower, and a gas flow sensor; an air supply valve is provided on the air inlet, and the air supply valve is connected to the blower; the heat storage body, the circulation fan, the heat conduction channel, and the air inlet are connected in sequence;

[0009] The killing component comprises an outer shell, an inner cylinder, a collecting device, and a motor; the inner cylinder is rotatably arranged in the outer shell, and the motor drives the inner cylinder to rotate in the outer shell, and the inner cylinder is a sealed cylinder; a discharge port and an openable feed port are respectively provided at both ends of the inner cylinder in the axial direction; the collecting device comprises a collecting port, an air outlet, and a collecting mesh bag arranged in the collecting device; the feed port is connected to the air inlet duct in a rotational sealing manner, the discharge port is connected to the collecting port in a rotational sealing manner, the air outlet is connected to the heat storage body, and the collecting mesh bag has a bag opening, which is sleeved on the collecting port; the heat storage body, the circulating fan, the air inlet duct, the inner cylinder, and the collecting device are then connected back to the heat storage body to form a sealed circulation channel; the gas flow sensor is arranged in the sealed circulation channel; when the gas flow sensor determines that the sealed circulation channel is insufficient in gas, the air replenishment valve and the blower are opened to replenish air to the sealed circulation channel, and after the air replenishment is completed, the air replenishment valve and the blower are in a closed state;

[0010] When the high-temperature hot air furnace is working, the feed port and the air inlet are disconnected, and fresh tea leaves are poured into the feed port and then connected. The heating furnace, the circulating fan and the motor are started. When the motor rotates, the fresh tea leaves rotate to the highest point of the inner cylinder and then fall under the action of gravity and pass through the line connecting the discharge port and the feed port. The heat conduction channel heats the passing airflow into a high-temperature airflow of 450°C-550°C. The high-temperature airflow flows along the line connecting the discharge port and the feed port to heat the falling fresh tea leaves, and the high-temperature airflow circulates multiple times in the sealed circulation channel. During the circulation process, when the heated fresh tea leaves are partially dehydrated and become lighter, they are collected after entering the collection net bag through the collection port along with the airflow.

[0011] Preferably, a dust collector is provided between the air outlet and the heat storage body.

[0012] Preferably, the high-temperature hot blast furnace further comprises a drying box, wherein the drying box contains a desiccant, a three-way valve is arranged between the dust collector and the heat storage body, and the drying box is respectively connected with the three-way valve and the heat storage body;

[0013] When the high-temperature hot blast furnace is working, the dust collector, the three-way valve, the drying box and the heat storage body are connected in sequence.

[0014] Preferably, a moisture sensor is provided in the inner cylinder. If the moisture sensor detects that the moisture content of the tea leaves reaches a preset range, the heating furnace is turned off, the three-way valve is controlled to be directly connected to the heat storage body, and the power of the circulating fan is increased to increase the speed at which the tea leaves are discharged.

[0015] Preferably, a temperature sensor is further provided in the air inlet duct, and the heating furnace controls the operation of the heating furnace according to the temperature obtained by the temperature sensor.

[0016] Preferably, the heat storage body is a ceramic heat storage body.

[0017] Preferably, the heat storage body is arranged on the top of the outer shell.

[0018] Preferably, a heat-insulating layer is provided on the outer periphery of the outer shell.

[0019] Preferably, the outer shell is a sealed shell, and the space between the inner cylinders of the outer shell is vacuumed.

[0020] Preferably, the heat conduction channel is made of 310S stainless steel.

[0021] The beneficial effects of the present invention are as follows: by adopting a sealing cylinder without perforations in the side wall as the inner cylinder, unlike the traditional withering machine, it is possible to realize the flow of airflow along the feed port and the discharge port arranged at both ends of the rotating shaft, and the fresh tea leaves in the inner cylinder will reach the highest point and then fall down, and the falling fresh tea leaves will exchange heat with the high-temperature airflow of 450℃-550℃, thereby realizing partial dehydration, and the high-temperature airflow of 450℃-550℃ is used, compared with the traditional airflow of 300℃, the temperature is higher, the contact area is larger, and the airflow can be faster (the traditional airflow will be blocked by the tea leaves, so the diffusion speed is slow, the heat is concentrated, and the tea leaves from the inner wall of the drum to the center have different dehydration temperatures and temperatures due to distance and diffusion problems), thereby achieving higher efficiency, and higher temperature will scald the tea leaves and affect the quality of the tea leaves; because when heating, the airflow directly heats the fresh tea leaves, and the heating is carried out in a suspended state of the fresh tea leaves. The invention discloses a method for making tea leaves hot and having a high temperature, and the tea leaves are heated evenly and will not stick to the inner cylinder or be directly burnt due to overheating of the inner cylinder, so that the tea soup brewed from the finished tea leaves is more transparent and has no burnt smell; the airflow circulates multiple times in the sealed circulation channel, and the waste heat can be recovered through the heat storage body each time, thereby reducing heat loss and achieving energy saving; further, the present application also utilizes high-temperature airflow, and since the weight of the fresh tea leaves decreases after being dehydrated by 30%-40%, the effect of the airflow is more obvious, and the dehydrated tea leaves can be blown directly into the collection net bag, so there is no need to pour out the tea leaves, saving the step of discharging and improving efficiency while ensuring that the tea leaves will not be over-dehydrated, thereby ensuring the quality of the tea leaves; while the tea leaves of the traditional withering machine will block the pores of the drum, preventing hot air from entering, and therefore the processing is limited, while the present application uses suspended heating with a large contact area, and more tea leaves can be withered at one time, further improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a high-temperature hot blast furnace according to a specific embodiment of the present invention;

[0023] Explanation of reference numerals: 1. Heating furnace; 11. Heat conduction channel; 2. Circulation component; 21. Air inlet; 22. Heat storage body; 23. Circulation fan; 24. Blower; 25. Air supply valve; 3. Killing component; 31. Outer shell; 32. Inner cylinder; 321. Discharge port; 322. Feed port; 33. Collecting device; 34. Motor; 35. Dust collector; 36. Drying box; 37. Three-way valve. DETAILED DESCRIPTION

[0024] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0025] Please refer to Figure 1 , a high-temperature hot blast furnace, comprising a heating furnace 1, a circulation component 2 and a killing component 3;

[0026] The heating furnace 1 is provided with a heat conduction channel 11;

[0027] The circulation component 2 includes an air inlet duct 21, a heat storage body 22, a circulation fan 23, a blower 24, and a gas flow sensor; an air supply valve 25 is provided on the air inlet duct 21, and the air supply valve 25 is connected to the blower 24; the heat storage body 22, the circulation fan 23, the heat conduction channel 11, and the air inlet duct 21 are connected in sequence;

[0028] The killing component 3 includes an outer shell 31, an inner cylinder 32, a collecting device 33, and a motor 34. The inner cylinder 32 is rotatably arranged in the outer shell 31, and the motor 34 drives the inner cylinder 32 to rotate in the outer shell 31. The inner cylinder 32 is a sealed cylinder; an outlet 321 and an openable feed port 322 are respectively provided at both ends of the inner cylinder 32 in the axial direction; the collecting device 33 includes a collecting port, an air outlet, and a collecting net bag arranged in the collecting device 33; the feed port 322 is connected to the air inlet 21 in a rotatable sealed manner, and the outlet 321 is connected to the The collecting port is connected by a rotary seal, the gas outlet is connected to the heat storage body 22, the collecting net bag has a bag opening, and the bag opening is sleeved on the collecting port; the heat storage body 22, the circulating fan 23, the air inlet 21, the inner cylinder 32, the collecting device 33 are connected back to the heat storage body 22 to form a sealed circulation channel; the gas flow sensor is arranged in the sealed circulation channel; when the gas flow sensor determines that the gas in the sealed circulation channel is insufficient, the air replenishment valve 25 and the blower 24 are opened to replenish the gas in the sealed circulation channel, and after the air replenishment is completed, the air replenishment valve 25 and the blower 24 are in a closed state;

[0029] When the high-temperature hot air furnace is working, the feed port 322 and the air inlet 21 are disconnected, and fresh tea leaves are poured into the feed port 322, and then the feed port 322 and the air inlet 21 are connected, and the heating furnace 1, the circulating fan 23, and the motor 34 are started. When the motor 34 rotates, the fresh tea leaves rotate to the highest point of the inner cylinder 32, and then fall under the action of gravity and pass through the line connecting the discharge port 321 and the feed port 322; the heat conduction channel 11 heats the passing airflow into a high-temperature airflow of 450°C-550°C; the high-temperature airflow flows along the line connecting the discharge port 321 and the feed port 322 to heat the falling fresh tea leaves, and the high-temperature airflow circulates multiple times in the sealed circulation channel; in the circulation process, when the heated fresh tea leaves are partially dehydrated and become lighter, they are collected after entering the collection net bag through the collection port along with the airflow.

[0030] From the above description, it can be known that by adopting a sealing cylinder with no perforations on the side wall as the inner cylinder 32, unlike the traditional withering machine, it is possible to realize the flow of airflow along the feed port 322 and the discharge port 321 arranged at both ends of the rotating shaft, and the fresh tea leaves in the inner cylinder 32 reach the highest point and then fall down. The falling fresh tea leaves will exchange heat with the high-temperature airflow of 450℃-550℃, thereby realizing partial dehydration. Moreover, the high-temperature airflow of 450℃-550℃ has a higher temperature, a larger contact area, and a faster airflow than the traditional airflow of 300℃ (the traditional airflow will be blocked by the tea leaves, so the diffusion speed is slow and the heat is concentrated. Due to the distance and diffusion problems, the tea leaves from the inner wall of the drum to the center have different dehydration temperatures and temperatures between the tea leaves near the inner wall of the drum and the tea leaves near the center of the drum), thereby achieving higher efficiency. If the temperature is higher, the tea leaves will be scalded and the quality of the tea leaves will be affected. During heating, the airflow directly heats the fresh tea leaves, and the heating is carried out in a suspended state of the fresh tea leaves. The fresh tea leaves are heated evenly and will not stick to the inner cylinder 32 or be directly burnt due to overheating of the inner cylinder 32, so that the tea soup brewed from the final product of tea leaves is more transparent and has no burnt smell; the airflow circulates multiple times in the sealed circulation channel, and the waste heat can be recovered through the heat storage body 22 each time, reducing heat loss and achieving energy saving; further, the present application also utilizes high-temperature airflow. Since the weight of the fresh tea leaves decreases after being dehydrated by 30%-40%, the effect of the airflow is more obvious, and the dehydrated tea leaves can be blown directly to the collection net bag, so there is no need to pour out the tea leaves, saving the step of discharging and improving efficiency while ensuring that the tea leaves will not be over-dehydrated, thereby ensuring the quality of the tea leaves; while the tea leaves of the traditional withering machine will block the pores of the drum, preventing hot air from entering, so the processing is limited, while the present application is suspended for heating, with a large contact area, more tea leaves can be withered at one time, further improving efficiency.

[0031] Furthermore, a dust collector 35 is provided between the air outlet and the heat storage body 22 .

[0032] It can be seen from the above description that, by providing the dust collector 35, the excess tea dust can be collected to prevent the dust from entering the circulation or causing the risk of dust explosion.

[0033] Furthermore, the high-temperature hot blast furnace further includes a drying box 36, wherein the drying box 36 contains a desiccant, a three-way valve 37 is disposed between the dust collector 35 and the heat storage body 22, and the drying box 36 is respectively connected to the three-way valve 37 and the heat storage body 22;

[0034] When the high-temperature hot blast furnace is working, the dust collector 35, the three-way valve 37, the drying box 36, and the heat storage body 22 are connected in sequence.

[0035] From the above description, it can be known that the drying box 36 can reduce the moisture content of the circulating airflow, thereby improving the fixing effect.

[0036] Furthermore, a moisture sensor is provided in the inner cylinder 32. If the moisture sensor detects that the moisture content of the tea leaves reaches a preset range, the heating furnace 1 is turned off, the three-way valve 37 is controlled to be directly connected to the heat storage body 22, and the power of the circulating fan 23 is increased to increase the speed at which the tea leaves are discharged.

[0037] From the above description, it can be seen that after the moisture content of the tea leaves reaches the preset range, the heating furnace 1 and the dehumidifier are turned off, and the residual heat can be used to keep warm while ensuring the humidity. The power of the circulating fan 23 is increased to increase the speed of tea leaves discharge and improve efficiency.

[0038] Furthermore, a temperature sensor is also provided in the air inlet duct 21, and the heating furnace 1 controls the operation of the heating furnace 1 according to the temperature obtained by the temperature sensor.

[0039] Furthermore, the heat storage body 22 is a ceramic heat storage body 22.

[0040] Furthermore, the heat storage body 22 is arranged on the top of the outer shell 31 .

[0041] Furthermore, a heat-insulating layer is provided on the outer periphery of the outer shell 31 .

[0042] It can be seen from the above description that the heat loss can be reduced by the thermal insulation layer.

[0043] Furthermore, the outer shell 31 is a sealed shell, and the space between the inner cylinder 32 of the outer shell 31 is vacuumed.

[0044] From the above description, it can be known that the vacuum treatment can reduce the resistance when the inner cylinder 32 rotates and improve the heat preservation performance. At the same time, the sealed inner cylinder 32 can prevent tea leaves and dust from entering between the inner cylinder 32 of the outer shell 31, avoid pollution during the next withering, and reduce the difficulty of cleaning.

[0045] Furthermore, the heat conduction channel 11 is made of 310S stainless steel.

[0046] From the above description, it can be seen that by adopting 310S stainless steel, it can withstand high temperatures, ensure the long-term use of the high-temperature hot air furnace, and reduce maintenance costs.

[0047] Embodiment 1

[0048] A high-temperature hot blast furnace, comprising a heating furnace 1, a circulation component 2 and a killing component 3;

[0049] The heating furnace 1 is provided with a heat conduction channel 11;

[0050] The circulation component 2 includes an air inlet duct 21, a heat storage body 22, a circulation fan 23, a blower 24, and a gas flow sensor; an air supply valve 25 is provided on the air inlet duct 21, and the air supply valve 25 is connected to the blower 24; the heat storage body 22, the circulation fan 23, the heat conduction channel 11, and the air inlet duct 21 are connected in sequence;

[0051] The killing component 3 includes an outer shell 31, an inner cylinder 32, a collecting device 33, and a motor 34. The inner cylinder 32 is rotatably arranged in the outer shell 31, and the motor 34 drives the inner cylinder 32 to rotate in the outer shell 31. The inner cylinder 32 is a sealed cylinder; an outlet 321 and an openable feed port 322 are respectively provided at both ends of the inner cylinder 32 in the axial direction; the collecting device 33 includes a collecting port, an air outlet, and a collecting net bag arranged in the collecting device 33; the feed port 322 is connected to the air inlet 21 in a rotatable sealed manner, and the outlet 321 is connected to the The collecting port is connected by a rotary seal, the gas outlet is connected to the heat storage body 22, the collecting net bag has a bag opening, and the bag opening is sleeved on the collecting port; the heat storage body 22, the circulating fan 23, the air inlet 21, the inner cylinder 32, the collecting device 33 are connected back to the heat storage body 22 to form a sealed circulation channel; the gas flow sensor is arranged in the sealed circulation channel; when the gas flow sensor determines that the gas in the sealed circulation channel is insufficient, the air replenishment valve 25 and the blower 24 are opened to replenish the gas in the sealed circulation channel, and after the air replenishment is completed, the air replenishment valve 25 and the blower 24 are in a closed state;

[0052] When the high-temperature hot air furnace is working, the feed port 322 and the air inlet 21 are disconnected, and fresh tea leaves are poured into the feed port 322, and then the feed port 322 and the air inlet 21 are connected, and the heating furnace 1, the circulating fan 23, and the motor 34 are started. When the motor 34 rotates, the fresh tea leaves rotate to the highest point of the inner cylinder 32, and then fall under the action of gravity and pass through the line connecting the discharge port 321 and the feed port 322; the heat conduction channel 11 heats the passing airflow into a high-temperature airflow of 450°C-550°C; the high-temperature airflow flows along the line connecting the discharge port 321 and the feed port 322 to heat the falling fresh tea leaves, and the high-temperature airflow circulates multiple times in the sealed circulation channel; in the circulation process, when the heated fresh tea leaves are partially dehydrated and become lighter, they are collected after entering the collection net bag through the collection port along with the airflow.

[0053] A dust collector 35 is provided between the air outlet and the heat storage body 22 .

[0054] The high-temperature hot blast furnace further includes a drying box 36, wherein the drying box 36 contains a desiccant, a three-way valve 37 is disposed between the dust collector 35 and the heat storage body 22, and the drying box 36 is respectively connected to the three-way valve 37 and the heat storage body 22;

[0055] When the high-temperature hot blast furnace is working, the dust collector 35, the three-way valve 37, the drying box 36, and the heat storage body 22 are connected in sequence.

[0056] A moisture sensor is provided in the inner cylinder 32. If the moisture sensor detects that the moisture content of the tea leaves reaches a preset range, the heating furnace 1 is turned off, the three-way valve 37 is controlled to be directly connected to the heat storage body 22, and the power of the circulating fan 23 is increased to increase the speed at which the tea leaves are discharged.

[0057] A temperature sensor is also provided in the air inlet duct 21 , and the heating furnace 1 controls the operation of the heating furnace 1 according to the temperature obtained by the temperature sensor.

[0058] The heat storage body 22 is a ceramic heat storage body 22 .

[0059] The heat storage body 22 is arranged on the top of the outer shell 31 .

[0060] A heat-insulating layer is disposed on the outer periphery of the outer shell 31 .

[0061] The heat conduction channel 11 is made of 310S stainless steel.

[0062] Embodiment 2

[0063] A high-temperature hot blast furnace, comprising a heating furnace 1, a circulation component 2 and a killing component 3;

[0064] The heating furnace 1 is provided with a heat conduction channel 11;

[0065] The circulation component 2 includes an air inlet duct 21, a heat storage body 22, a circulation fan 23, a blower 24, and a gas flow sensor; an air supply valve 25 is provided on the air inlet duct 21, and the air supply valve 25 is connected to the blower 24; the heat storage body 22, the circulation fan 23, the heat conduction channel 11, and the air inlet duct 21 are connected in sequence;

[0066] The killing component 3 includes an outer shell 31, an inner cylinder 32, a collecting device 33, and a motor 34. The inner cylinder 32 is rotatably arranged in the outer shell 31, and the motor 34 drives the inner cylinder 32 to rotate in the outer shell 31. The inner cylinder 32 is a sealed cylinder; an outlet 321 and an openable feed port 322 are respectively provided at both ends of the inner cylinder 32 in the axial direction; the collecting device 33 includes a collecting port, an air outlet, and a collecting net bag arranged in the collecting device 33; the feed port 322 is connected to the air inlet 21 in a rotatable sealed manner, and the outlet 321 is connected to the The collecting port is connected by a rotary seal, the gas outlet is connected to the heat storage body 22, the collecting net bag has a bag opening, and the bag opening is sleeved on the collecting port; the heat storage body 22, the circulating fan 23, the air inlet 21, the inner cylinder 32, the collecting device 33 are connected back to the heat storage body 22 to form a sealed circulation channel; the gas flow sensor is arranged in the sealed circulation channel; when the gas flow sensor determines that the gas in the sealed circulation channel is insufficient, the air replenishment valve 25 and the blower 24 are opened to replenish the gas in the sealed circulation channel, and after the air replenishment is completed, the air replenishment valve 25 and the blower 24 are in a closed state;

[0067] When the high-temperature hot air furnace is working, the feed port 322 and the air inlet 21 are disconnected, and fresh tea leaves are poured into the feed port 322, and then the feed port 322 and the air inlet 21 are connected, and the heating furnace 1, the circulating fan 23, and the motor 34 are started. When the motor 34 rotates, the fresh tea leaves rotate to the highest point of the inner cylinder 32, and then fall under the action of gravity and pass through the line connecting the discharge port 321 and the feed port 322; the heat conduction channel 11 heats the passing airflow into a high-temperature airflow of 450°C-550°C; the high-temperature airflow flows along the line connecting the discharge port 321 and the feed port 322 to heat the falling fresh tea leaves, and the high-temperature airflow circulates multiple times in the sealed circulation channel; in the circulation process, when the heated fresh tea leaves are partially dehydrated and become lighter, they are collected after entering the collection net bag through the collection port along with the airflow.

[0068] A dust collector 35 is provided between the air outlet and the heat storage body 22 .

[0069] The high-temperature hot blast furnace further includes a drying box 36, wherein the drying box 36 contains a desiccant, a three-way valve 37 is disposed between the dust collector 35 and the heat storage body 22, and the drying box 36 is respectively connected to the three-way valve 37 and the heat storage body 22;

[0070] When the high-temperature hot blast furnace is working, the dust collector 35, the three-way valve 37, the drying box 36, and the heat storage body 22 are connected in sequence.

[0071] A moisture sensor is provided in the inner cylinder 32. If the moisture sensor detects that the moisture content of the tea leaves reaches a preset range, the heating furnace 1 is turned off, the three-way valve 37 is controlled to be directly connected to the heat storage body 22, and the power of the circulating fan 23 is increased to increase the speed at which the tea leaves are discharged.

[0072] A temperature sensor is also provided in the air inlet duct 21 , and the heating furnace 1 controls the operation of the heating furnace 1 according to the temperature obtained by the temperature sensor.

[0073] The heat storage body 22 is a ceramic heat storage body 22 .

[0074] The heat storage body 22 is arranged on the top of the outer shell 31 .

[0075] The outer shell 31 is a sealed shell, and the space between the inner cylinder 32 of the outer shell 31 is vacuumed.

[0076] The heat conduction channel 11 is made of 310S stainless steel.

[0077] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high temperature hot blast furnace, characterized in that: Including heating furnace, circulation components and killing components; A heat conduction channel is provided in the heating furnace; The circulation component includes an air inlet, a heat storage body, a circulation fan, a blower, and a gas flow sensor; an air supply valve is provided on the air inlet, and the air supply valve is connected to the blower; the heat storage body, the circulation fan, the heat conduction channel, and the air inlet are connected in sequence; The killing component comprises an outer shell, an inner cylinder, a collecting device, and a motor; the inner cylinder is rotatably arranged in the outer shell, and the motor drives the inner cylinder to rotate in the outer shell, and the inner cylinder is a sealed cylinder; a discharge port and an openable feed port are respectively provided at both ends of the inner cylinder in the axial direction; the collecting device comprises a collecting port, an air outlet, and a collecting mesh bag arranged in the collecting device; the feed port is connected to the air inlet duct in a rotational sealing manner, the discharge port is connected to the collecting port in a rotational sealing manner, the air outlet is connected to the heat storage body, and the collecting mesh bag has a bag opening, which is sleeved on the collecting port; the heat storage body, the circulating fan, the air inlet duct, the inner cylinder, and the collecting device are then connected back to the heat storage body to form a sealed circulation channel; the gas flow sensor is arranged in the sealed circulation channel; when the gas flow sensor determines that the sealed circulation channel is insufficient in gas, the air replenishment valve and the blower are opened to replenish air to the sealed circulation channel, and after the air replenishment is completed, the air replenishment valve and the blower are in a closed state; When the high-temperature hot air furnace is working, the feed port and the air inlet are disconnected, and fresh tea leaves are poured into the feed port and then connected. The heating furnace, the circulating fan and the motor are started. When the motor rotates, the fresh tea leaves rotate to the highest point of the inner cylinder and then fall under the action of gravity and pass through the line connecting the discharge port and the feed port. The heat conduction channel heats the passing airflow into a high-temperature airflow of 450°C-550°C. The high-temperature airflow flows along the line connecting the discharge port and the feed port to heat the falling fresh tea leaves, and the high-temperature airflow circulates multiple times in the sealed circulation channel. During the circulation process, when the heated fresh tea leaves are partially dehydrated and become lighter, they are collected after entering the collection net bag through the collection port along with the airflow.

2. The high temperature hot blast stove according to claim 1, characterized in that: A dust collector is arranged between the air outlet and the heat storage body.

3. The high temperature hot blast furnace according to claim 2, characterized in that: The high-temperature hot blast furnace further comprises a drying box, wherein a desiccant is provided in the drying box, a three-way valve is arranged between the dust collector and the heat storage body, and the drying box is respectively connected with the three-way valve and the heat storage body; When the high-temperature hot blast furnace is working, the dust collector, the three-way valve, the drying box and the heat storage body are connected in sequence.

4. The high temperature hot blast stove according to claim 3, characterized in that: A moisture sensor is arranged in the inner cylinder. If the moisture sensor detects that the moisture content of the tea leaves reaches a preset range, the heating furnace is turned off, the three-way valve is controlled to be directly connected to the heat storage body, and the power of the circulating fan is increased to increase the speed at which the tea leaves are discharged.

5. The high temperature hot blast stove according to claim 1, characterized in that: A temperature sensor is also provided in the air inlet duct, and the heating furnace controls the operation of the heating furnace according to the temperature obtained by the temperature sensor.

6. The high temperature hot blast stove according to claim 1, characterized in that: The heat storage body is a ceramic heat storage body.

7. The high temperature hot blast stove according to claim 1, characterized in that: The heat storage body is arranged on the top of the outer shell.

8. The high temperature hot blast stove according to claim 1, characterized in that: A heat-insulating layer is arranged on the outer periphery of the outer shell.

9. The high temperature hot blast furnace according to claim 1, characterized in that: The outer shell is a sealed shell, and the space between the inner cylinders of the outer shell is vacuumed.

10. The high temperature hot blast stove according to claim 1, characterized in that: The material of the heat conduction channel is 310S stainless steel.

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