Air distribution device

Abstract

The application relates to a kind of air distribution devices, including air distribution pipe, air distribution pipe is located in the drum and along the axial arrangement of drum, air distribution pipe is spaced apart in the direction of its pipe length and is provided with air outlet, the air outlet direction points to the falling path of tea in the drum from A, A is the highest point where tea reaches along with the rotation of the drum when the drum rotates and fixes green.The above-mentioned scheme provided by the application, hot air is blown in by air distribution pipe, and hot air is heated to tea during the falling process of tea, so as to improve the color quality of tea.

Description

Technical Field

[0001] The present invention relates to the field of tea making machines, and in particular to an air distribution device. Background Art

[0002] During the tea production process, a drum withering machine is often used to wither the tea leaves. Traditional withering machines generally use electric heating or fire heating to heat the withering drum. Although this heating method can achieve general withering of tea leaves, the color quality of the tea produced is poor. Through research, it is found that while the drum is withering, hot air is introduced to assist with withering the tea leaves, which can significantly improve the color quality of the tea leaves. However, the existing hot air mechanism that arranges hot air into the drum simply blows hot air into the feed end of the tea leaves, which may result in the tea leaves not being fully withered or the tea leaves being over-withered. Therefore, it is necessary to solve this problem. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides an air distribution device, which can effectively distribute hot air into the drum, thereby improving the effect of drum tea withering.

[0004] The technical solutions adopted by the present invention are specifically as follows.

[0005] A wind distribution device, characterized in that it includes an air distribution pipe, which is located in a drum and arranged along the axial direction of the drum. Air outlets are arranged on the air distribution pipe at intervals along the length of the tube. The air outlet direction of the air outlet points to the falling path of the tea leaves falling from point A in the drum. Point A is the highest point reached by the tea leaves as the drum rotates to wither the tea leaves.

[0006] A further solution is that the air outlets are arranged in an array shape along the circumferential direction and the axial direction on the outer wall of the air distribution duct.

[0007] The air distribution pipe is provided with an anti-accumulation structure to prevent the fallen tea leaves from accumulating on the air distribution pipe.

[0008] The anti-accumulation structure is composed of an inverted V-shaped plate arranged on the upper tube surface of the air distribution duct.

[0009] The anti-accumulation structure is composed of first blowing nozzles arranged in the middle of the upper surface of the air distribution pipe. The first blowing nozzles are arranged at intervals on the air distribution pipe along the length direction of the air distribution pipe. The first blowing nozzles blow off the tea leaves that fall on the air distribution pipe.

[0010] The air outlet direction of the blowing nozzle is horizontally pointing toward the discharge end of the drum.

[0011] The air distribution pipe is also provided with an auxiliary pushing mechanism for assisting the tea leaves to move along the length direction of the drum in the drum.

[0012] The auxiliary pushing mechanism is composed of second blowing nozzles arranged on the lower half of the air distribution pipe. The second blowing nozzles are arranged at intervals on the air distribution pipe along the length direction of the air distribution pipe. The air outlet direction of the second blowing nozzles is obliquely downward to the tea distribution area in the drum and is tilted toward the discharge end of the drum.

[0013] A feeding auxiliary mechanism is provided on the tube body of the air distribution pipe corresponding to the feed end of the drum to assist in feeding the tea leaves put in from the feed end; the feeding auxiliary mechanism includes various arc-shaped air guide plates provided on the tube body of the air distribution pipe, and the air guide plates are arranged at intervals along the tube body of the air distribution pipe. One side of the air guide plate is fixedly assembled and connected to the air distribution pipe, and the other side of the air distribution pipe extends toward the discharge end of the drum, and air outlets are provided on the tube body of the air distribution pipe between adjacent air guide plates.

[0014] The above solution provided by the present invention blows hot air through the air distribution pipe, and the hot air heats the tea leaves as they fall, thereby improving the color quality of the tea leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the drum fixing machine.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure after removing some components.

[0017] Figure 3 Schematic diagram of the structure of the heating device.

[0018] Figure 4 for Figure 3 Schematic diagram of the structure after removing some components.

[0019] Figure 5 It is a structural diagram of the back of the heating device.

[0020] Figure 6 This is a front view of the heating device and drum arrangement.

[0021] Figure 7 Schematic diagram of the structure of short strips.

[0022] Figure 8 Schematic diagram of the structure of the heating component.

[0023] Figure 9 This is a structural diagram of the air distribution device.

[0024] Figure 10 This is a structural diagram of the air distribution duct.

[0025] Figure 11 It is a structural diagram of the annular mounting plate and the observation window.

[0026] 100-frame, 101-upper shell, 102-side shell, 103-temperature detection device, 104-roller, 105-cover, 200-heating device, 201-mounting seat body, 202-seal, 203-connection hole, 204-terminal, 205-slide, 210-electric heating component, 211-A0 heating unit, 212-A1 heating unit, 213-A2 heating unit, 214-A0 body, 215-A1 body, 216-A2 body, 217-heating resistor body, 220-anti- De-assembly, 221-short strip, 222-assembly groove, 230-insulation support plate, 310-air distribution duct, 311-air outlet, 312-first blowing nozzle, 313-second blowing nozzle, 314-air guide plate, 315-connecting rod, 316-first bracket, 321-connecting pipe, 322-heater, 323-blower, 401-first air outlet pipe, 404-first connecting air pipe, 405-second connecting air pipe, 406-third connecting air pipe, 407-top fan, 408-annular mounting plate, 409-latch plate. DETAILED DESCRIPTION

[0027] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0028] The present invention is a further improvement on the traditional drum 104 fixing machine. Therefore, the parts that are not described in detail are implemented with reference to the existing drum 104 fixing machine. The improvements to the drum 104 fixing machine mainly include the following aspects: First, improve the heating component 210 on the heating device 200 to improve the heating efficiency of the heating device 200. Second, improve the structure of the mounting seat body 201 that constitutes the heating device 200 to avoid short circuits and other faults caused by the breakage of the heating component 210. Third, improve the air distribution mechanism to solve the problem of insufficient stem diameter and over-fixation of leaves in the traditional drum 104 fixing machine due to the introduction of hot air heating. Fourth, improve the dehumidification device to enhance the dehumidification capacity. The detailed plan is as follows:

[0029] like Figure 1 、 2 As shown, the drum 104 fixing machine includes a drum 104 rotatably mounted on a frame 100, a heating device 200 for heating the drum 104 is provided on the lower side of the drum 104, an air distribution device is provided inside the drum 104, and a dehumidification device for supplying air flow into the drum 104 for dehumidification is provided at the feed end of the drum 104.

[0030] The specific operation is as follows: the heating device 200 includes a mounting base body 201 and a heating component 210 installed on the mounting base body 201 for heating the roller 104 on the upper side thereof. The mounting base body 201 is also provided with an anti-slip mechanism for preventing the heating component 210 from detaching from the mounting base body 201 after breaking. A further solution is that the heating component 210 is composed of a spiral heating resistance wire, and the heating components 210 are arranged in an array on the mounting base body 201. The above solution provided by the present invention, through the anti-slip mechanism, can effectively prevent the broken end of the heating component 210 from detaching from the mounting base body 201 and contacting the outer wall of the upper roller 104 when the heating component 210 breaks, thereby preventing a short circuit.

[0031] The anti-slip mechanism can be implemented according to the situation. For example, the anti-slip mechanism is composed of insulating heat-resistant wires, which are arranged at intervals along the length of the heating component 210. The insulating heat-resistant wires press the heating component 210 against the mounting base body 201. Of course, the mounting base body 201 can also be covered with an insulating heat-resistant net to form an anti-slip mechanism. A more preferred solution is as follows Figure 3 、 4 As shown in Figure 7: The anti-slip mechanism is composed of anti-slip components 220 arranged at intervals along the length direction of the heating component 210. The anti-slip component 220 is provided with a connecting portion, which is used to be assembled and connected with the body of the heating component 210. In detail, the anti-slip component 220 is composed of an anti-slip plate arranged in a vertical shape on the plate surface. The upper side edge of the anti-slip plate is provided with a closing-shaped assembly groove 222 constituting the connecting portion. The body of the heating component 210 is inserted and assembled in the assembly groove 222. The notch size of the assembly groove 222 prevents the heating component 210 from moving out of the assembly groove 222 from the notch. The groove cross-section of the assembly groove 222 consists of a large semicircular portion and a rectangular portion, or consists of a large semicircular portion alone. Specifically, the anti-slip plate can be composed of various long short strips 221, and the short strips 221 are detachably assembled and connected to the mounting seat body 201. In this embodiment, not only can the short circuit problem caused by the breakage of the traditional heating component 210 be reliably solved, but the replacement of the heating component 210 can also be conveniently achieved.

[0032] like Figure 4 、 5As shown, a heat-insulating support plate 230 is provided between adjacent anti-slip components 220, and an array of receiving grooves is provided on the heat-insulating support plate 230. The length direction of the receiving groove is consistent with the length direction of the heating component 210, and a partial body of the heating component 210 is located in the receiving groove. The size of the receiving groove is larger than the size of the heating component 210. A groove portion for installing the heating component 210, the anti-slip component 220 and the heat-insulating support plate 230 is provided on the upper surface of the mounting seat body 201. The heating component 210 is assembled in a U-shaped arrangement. A connection hole 203 for electrically connecting the end of the heating component 210 and the terminal 204 is provided on the groove wall on one side of the groove portion. The terminal 204 is arranged in an array on the outer side of the groove wall. A slide bar 205 is provided at the bottom of the mounting seat body 201. The mounting seat body 201 is slidably assembled with the rack 100 through the slide bar 205. The length direction of the slide bar 205 is consistent with the length direction of the heating component 210. The length direction of the slide 205 is consistent with the horizontal radial direction of the upper fixing roller 104. The sliding assembly of the mounting seat body 201 is mainly to facilitate the inspection and replacement of the heating component 210. The mounting seat body 201 is provided with heat-insulating sealing seals 202 on both sides perpendicular to the length direction of the heating component 210. The seal 202 can be specifically formed by folding a folded heat-insulating sealing cloth. The seal 202 plays a good sealing role and reduces heat loss. In addition, a cover plate 105 can be provided on the outer side of the two sides of the mounting seat body 201 along the length direction of the roller 104, and the cover plate 105 and the frame 100 can be detachably assembled to avoid the exposure of the connecting wires. When the heating device 200 needs to be repaired, the cover plate 105 is removed and the heating device 200 is then removed for maintenance. When the drum 104 is long, multiple groups of heating devices 200 are set on the lower side of the drum 104 along the length direction of the drum 104. Different heating devices 200 provide different heating temperatures to meet different heating requirements. The heating devices 200 can be isolated by setting thermal insulation parts.

[0033] like Figure 3 、 6 As shown, the mounting base body 201 is provided with an A0 heating unit 211. An A1 heating unit 212 and an A2 heating unit 213 are respectively provided on the outer sides of the A0 heating unit 211 along direction A. The heating intensity of the A heating unit is greater than the heating intensity of the A1 heating unit 212 and the heating intensity of the A2 heating unit 213. Direction A is the horizontal radial direction of the roller 104. The distance between the A0 heating unit 211 and the outer wall of the roller 104 above it is denoted as L0, the distance between the A1 heating unit 212 and the outer wall of the roller 104 above it is denoted as L1, and the distance between the A2 heating unit 213 and the outer wall of the roller 104 above it is denoted as L2. Both L1 and L2 are greater than L0.

[0034] Because the outer wall of the drum 104 is cylindrical, the distance between it and the lower heating device 200 is smallest in the center and gradually increases toward the outer sides. The lower heating device 200 heats the upper drum 104 primarily through heat conduction and heat radiation. When the distance is small, heat radiation dominates. When the distance increases to a certain extent, heat radiation is weakened, and heat conduction becomes dominant. Since heat conduction primarily involves the heating device 200 heating the air above, which then transfers heat to the inner wall of the drum 104, heat radiation provides faster and more effective heating than conduction. In a conventional heating device 200, the heating intensity is uniform everywhere. This uniform distribution prevents the effective use of heat radiation heating in the center, while limiting the effectiveness of heat conduction heating on the outer sides. Therefore, in the present invention, compared to the conventional heating device 200, the heating intensity of the central A0 heating unit 211 is increased, while the heating intensity of the adjacent A1 and A2 heating units 212 and 213 is reduced. This strengthens the central heat radiation heating method, significantly improving the heating effect, while not significantly weakening the heating effect on the sides. This significantly enhances the overall heating efficiency of the heating device 200, allowing the drum 104 to heat up quickly. There are many ways to achieve different heating intensities, such as using heating components 210 of different powers to form different heating units, or adjusting the distribution density of the heating components 210.

[0035] A further solution is to provide the same heating intensity for the A1 heating unit 212 as for the A2 heating unit 213. The mounting base body 201 is provided with heating components 210, each of which is used to form the A0 heating unit 211, the A1 heating unit 212, and the A2 heating unit 213. The heating components 210 are formed of heating resistor wires, preferably spiral heating resistor wires. The heating assembly 210 is provided with a heating resistor body 217. The length of the heating resistor body 217 is aligned with the direction A. The heating resistor bodies 217 are spaced apart along the direction B, which is a horizontal direction perpendicular to the direction A. The heating resistor body 217 includes an A0 segment 214 and an A1 segment 215 and an A2 segment 216 on either side of the A0 segment 214. The A0 segment 214 is used to form the A0 heating unit 211, and the A1 segment 215 and the A2 segment 216 are used to form the A1 heating unit 212 and the A2 heating unit 213, respectively. The heating intensity of the A1 segment 215 and the A2 segment 216 is less than that of the A0 segment. This method can reliably form the A0 heating unit 211, the A1 heating unit 212, and the A2 heating unit 213 with different heating intensities.

[0036] In specific implementation, the heating resistance wire can be assembled on the mounting base body 201 in a circuitous bend and winding manner, such as an S-shaped or M-shaped installation. A more preferred method is: the spiral heating resistance wire is composed of two heating resistance body parts 217, and the two heating resistance body parts 217 are arranged in a U shape, and the two ends of the spiral heating resistance wire are electrically connected to the neutral wire and the live wire respectively. Specifically, by adjusting the pitch between the spiral resistance wires, the resistance size of different body parts can be different, and then the heating intensity can be different. More specifically, as Figure 8 As shown, the pitch of the resistance wire of segment A0 214 is denoted as d0, the pitch of the resistance wire of segment A1 215 is denoted as d1, and the pitch of the resistance wire of segment A2 216 is denoted as d2. Both d1 and d2 are greater than d0. During installation, two heating resistance segments are formed on the spiral heating resistance wire. The resistance wire is then stretched as required to form the A0 segment 214, A1 segment 215, and A2 segment 216 with different pitches. The spiral heating resistance wires are then installed and assembled on the mounting base body 201. The mounting base body 201 can be implemented according to existing mounting base body 201 implementation methods.

[0037] There is another embodiment, which is to set the length direction of the heating component 210 (resistance wire) to be consistent with the length of the roller 104, set the heating components 210 at intervals along the A direction, and set the arrangement density of the heating components 210 on the A0 heating unit 211 to be greater than the arrangement density of the heating components 210 on the A1 heating unit 212 and the A2 heating unit 213.

[0038] As shown in the figure Figure 9 、 10 As shown, the air distribution mechanism includes an air distribution duct 310 located within the drum 104 and arranged axially along the drum 104. Air outlets 311 are spaced along the length of the air distribution duct 310. Air outlets 311 direct air from the air distribution duct 311 toward the tea leaves' path as they fall from point A within the drum 104. Point A is the highest point the tea leaves reach as the drum 104 rotates to cure the tea leaves. The air outlets 311 are arranged in an array circumferentially and axially on the outer wall of the air distribution duct 310. Hot air is blown in through the air distribution duct 310, heating the tea leaves as they fall, thereby improving their color and quality. Furthermore, the hot air is distributed along the entire length of the drum 104, enhancing the tea leaves' color and quality. This also addresses the issues with traditional tea-curing equipment, such as insufficient stalk diameter and over-curing of leaves.

[0039] Since the air distribution tube 310 is located inside the drum 104 during installation, some tea leaves may fall onto the air distribution tube 310. If the tea leaves that fall onto the air distribution tube 310 are not promptly processed, some unqualified tea leaves may be mixed into the finished tea leaves. Therefore, a further solution of the present invention is that the air distribution tube 310 is provided with an anti-accumulation structure to prevent the fallen tea leaves from accumulating on the air distribution tube 310. There are two specific implementation methods. The first is that the anti-accumulation structure is composed of an inverted V-shaped plate provided on the upper tube surface of the air distribution tube 310. This method directly guides the tea leaves that may be retained to slide down through the guide surface. The second is that the anti-accumulation structure is composed of the first blowing nozzles 312 provided in the middle of the upper tube surface of the air distribution tube 310. The first blowing nozzles 312 are provided at intervals on the air distribution tube 310 along the length direction of the air distribution tube 310. The first blowing nozzles 312 blow off the tea leaves that fall onto the air distribution tube 310. The air blown by the first blowing nozzles 312 removes tea leaves that have fallen onto the tube wall, preferably using the second method. Each first blowing nozzle 312 is connected to the air distribution tube 310. Specifically, an L-shaped air nozzle can be used to form the first blowing nozzle 312. The air flow direction of the first blowing nozzle 312 is horizontally directed toward the discharge end of the drum 104.

[0040] Because the tea leaves in drum 104 are not of uniform size, some are large and some are small. The addition of a hot air distribution device prevents some smaller tea leaves from reliably traveling toward the discharge end of drum 104. Therefore, the air distribution duct 310 is also equipped with an auxiliary pushing mechanism to assist in moving the tea leaves along the length of drum 104 within drum 104. Specifically, this auxiliary pushing mechanism comprises second blowing nozzles 313 disposed on the lower half of the air distribution duct 310. These second blowing nozzles 313 are spaced along the length of the duct 310 and direct air downward obliquely toward the material area within drum 104, tilted toward the discharge end of drum 104. The material area is the area within drum 104 where the tea leaves reside during withering, or where they fall. Each second blowing nozzle 313 is connected to the air distribution duct 310. Specifically, each second blowing nozzle 313 can be a straight tube. The plane containing the centerline of each second blowing nozzle 313 is designated as the second plane, and the vertical plane passing through the centerline of the air distribution duct 310 and arranged vertically is designated as the first plane. Air outlets 311 are arranged in an array on the wall of the air distribution duct 310 between the first and second planes. The air outlets 311 can be directly formed in the wall of the air distribution duct 310, and the air outlet direction of each air outlet 311 can be aligned with the radial direction of the drum 104.

[0041] Since the structure of the guide blades provided on the inner wall of the drum at the feed port of the drum 104 is different from that of other parts, the tea leaves guided into the drum 104 through the feed hopper may be partially retained and unable to be transported forward. Therefore, in the present invention, a feeding auxiliary mechanism is provided on the tube body of the air distribution tube 310 corresponding to the feed end of the drum 104 to assist in feeding the tea leaves fed from the feed end. The feeding auxiliary mechanism includes arc-shaped air guide plates 314 provided on the tube body of the air distribution tube 310. The air guide plates 314 are arranged at intervals along the tube body of the air distribution tube 310. One side of the air guide plates 314 is fixedly assembled and connected to the air distribution tube 310. The other side of the air distribution tube 310 extends toward the discharge end of the drum 104. An air outlet 311 is provided on the tube body of the air distribution tube 310 between adjacent air guide plates 314. The air outlet direction at the air outlet 311 at the feeding end is changed by the guidance of the air guide plate 314, thereby pushing the tea leaves forward, preventing the tea leaves from being retained at the feeding end of the drum 104, and ensuring reliable withering of the tea leaves.

[0042] Detailed as Figure 2 、 9 As shown, the end of the air distribution duct 310 at the discharge end is connected to the air outlet 311 of the heater 322 via a connecting pipe 321 and is mounted on the frame 100 via a first bracket 316. The end of the air distribution duct 310 at the feed end is configured as a plug and is provided with a connecting rod 315. The end of the connecting rod 315 extending outside the drum 104 is mounted on the frame 100 via a second bracket. The air inlet of the heater 322 is connected to the outlet of the blower 323. Furthermore, the air distribution duct 310 is movably mounted, and the air distribution intensity can be adjusted by adjusting the position of the air distribution duct 310 within the drum 104. Specifically, the air distribution duct 310 is movably mounted along direction A, which is a horizontal direction perpendicular to the arrangement of the air distribution duct 310. This allows for adapting to different air distribution requirements and different tea processing needs. The air distribution duct 310 is installed on the side of the drum 104 opposite the tea distribution area. An annular air distribution plate is also provided within the air distribution duct 310, arranged concentrically with the duct 310. Specifically, the annular air distribution plates are spaced apart along the length of the duct 310, with the inner diameter of the plates gradually decreasing along the direction of gas flow. This air distribution ensures uniform air flow from each air outlet 311.

[0043] The dehumidification device includes a first airflow unit, a second airflow unit, and a third airflow unit provided at the feed end of the drum 104. The first airflow unit, the second airflow unit, and the third airflow unit respectively supply airflow to the interior of the drum 104. The first airflow unit is arranged corresponding to the material area within the drum 104, the second airflow unit is arranged corresponding to the empty material area within the drum 104, and the third airflow unit is arranged corresponding to the top area within the drum 104. The material area is the area within the drum 104 where the tea leaves are located during the withering process, and the empty material area is the area within the drum 104 opposite the material area. The airflow supplied by the first airflow unit is greater than the airflow supplied by the second and third airflow units. By rationally distributing the airflow, since the tea leaves are concentrated in the material area, a large amount of moisture is generated. Therefore, the first airflow unit with a larger airflow volume is used to distribute the airflow, while the empty material area has no tea leaves, so the second airflow unit with a smaller airflow volume is used to distribute the airflow. This allows the moisture within the drum 104 to be reliably discharged, thereby improving the withering effect.

[0044] A further solution is: the airflow supplied by the first airflow unit, the second airflow unit, and the third airflow unit are all hot airflows. The specific operation is: an annular mounting plate 408 is provided on the outside of the feed end of the drum 104, and the first air outlet pipe 401 constituting the first airflow unit, the second air outlet pipe constituting the second airflow unit, and the third air outlet pipe constituting the third airflow unit are fixedly mounted on the annular mounting plate 408 respectively, and the air outlet directions of the first air outlet pipe 401, the second air outlet pipe, and the third air outlet pipe are all consistent with the length direction of the drum 104. Two first air outlet pipes 401 are provided, and one second air outlet pipe and one third air outlet pipe are provided respectively, as shown in the following figure. Figure 11 As shown. An inverted U-shaped shell is provided on the outside of the drum 104. A cavity for accommodating hot air flow (heated by the heating device 200) is enclosed between the mounting base body 201 located at the lower side of the drum 104, the shell and the drum 104. The first air outlet pipe 401, the second air outlet pipe and the third air outlet pipe are connected to the cavity through the first connecting air pipe 404, the second connecting air pipe 405 and the third connecting air pipe 406 respectively. A top fan 407 for blowing air into the cavity is also provided on the shell. The shell can be specifically composed of a semicircular upper shell 101 and side shells 102 extending downward from both sides of the upper shell 101, as shown in FIG. Figure 2 As shown, the side shell 102 and the upper shell 101 are detachably assembled and connected. By utilizing the heat energy in the clamping cavity to heat the air flow, hot air is used to assist in dehumidification, which has a good dehumidification effect and will not have an adverse effect on the tea leaves.

[0045] A further solution is to fix an annular mounting plate 408 to the feed end of the drum shell. An observation window is provided on the annular mounting plate 408 for observing the discharge of tea leaves from the feed end of the drum 104. The observation window is located on the annular mounting plate 408 between the second and third air outlet pipes. Because the discharge port of the feed hopper is located in the gap in the middle of the mounting plate, the internal conditions of the drum 104 cannot be observed through the gap. Therefore, the observation window allows for convenient monitoring of the loading status of tea leaves at the feed end of the drum 104. The placement of the observation window allows for convenient monitoring of tea leaves at the feed end of the drum 104 if tea leaves are observed to be accumulating at the feed end. The air outlet 311 of the air blower 323 is positioned over the observation window to introduce air and push the tea leaves for the withering process, ensuring reliable tea processing. A latch plate 409 is provided at the observation window, which is movably mounted radially along the annular mounting plate 408. The latch plate 409 is set so that the latch plate 409 can be opened when observing and closed at other times to avoid heat loss. In addition, a temperature detection device 103 is set in the middle of the side shell 102, and the temperature sensor on the temperature detection device 103 extends into the clamping cavity to measure the temperature. The temperature detection device 103 is set at intervals along the length direction of the drum 104. The temperature sensor is adjustably assembled in the horizontal direction perpendicular to the length direction of the drum 104. The temperature detection device 103 is assembled here, and the temperature it detects is consistent with the temperature of the tea leaves when they are withered in the drum 104, and the detection accuracy is good. The temperature sensor can be adjustably assembled so that it can be adjusted to suit different situations and ensure the reliability of temperature detection. Some air holes can be set on the annular mounting plate 408, and the air holes are set at intervals along the circumference to improve the moisture removal effect.

[0046] In summary, the above-mentioned solution provided by the present invention can effectively ensure the treatment of tea leaves and improve the tea leaves withering effect.

[0047] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. An air distribution device, characterized in that: The air distribution pipe is located inside the drum and arranged along the axial direction of the drum. Air outlets are arranged on the air distribution pipe at intervals along the length of the pipe. The air outlets are directed to the falling path of the tea leaves from point A inside the drum. Point A is the highest point reached by the tea leaves as the drum rotates to wither. The air distribution pipe is provided with an anti-accumulation structure to prevent the fallen tea leaves from accumulating on the air distribution pipe; the anti-accumulation structure is composed of an inverted V-shaped plate provided on the upper surface of the air distribution pipe or the first blowing nozzles provided in the middle of the upper surface of the air distribution pipe; The first blowing nozzles are arranged at intervals along the length of the air distribution pipe, and the first blowing nozzles blow off the tea leaves that fall on the air distribution pipe; The air distribution pipe is also provided with an auxiliary pushing mechanism for assisting the tea leaves to move along the length direction of the drum in the drum; the auxiliary pushing mechanism is composed of second blowing nozzles arranged on the pipe surface of the lower half of the air distribution pipe, and the second blowing nozzles are arranged at intervals on the air distribution pipe along the length direction of the air distribution pipe, and the air outlet direction of the second blowing nozzle is obliquely downward to the tea distribution area in the drum and is arranged obliquely to the discharge end side of the drum; a feeding auxiliary mechanism for assisting the feeding of tea leaves put in from the feed end is provided on the pipe body of the air distribution pipe corresponding to the feed end of the drum; the feeding auxiliary mechanism includes arc-shaped air guide plates provided on the pipe body of the air distribution pipe, the air guide plates are arranged at intervals along the pipe body of the air distribution pipe, one side of the air guide plate is fixedly assembled and connected to the air distribution pipe, and the other side of the air distribution pipe is extended toward the discharge end of the drum, and air outlets are provided on the pipe body of the air distribution pipe between adjacent air guide plates.

2. The air distribution device according to claim 1, characterized in that: The air outlets are arranged in an array shape along the circumferential direction and the axial direction on the outer wall of the air distribution duct.

3. The air distribution device according to claim 1, characterized in that: The air outlet direction of the first blowing nozzle is horizontally directed toward the discharge end of the drum.

4. A drum fixing machine, characterized by: The invention comprises the air distribution device according to any one of claims 1 to 3.

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