Winnowing device for screening broken tea

Abstract

The utility model relates to a winnowing device for screening broken tea, the winnowing device comprises a rack, a winnowing box, a discharging block, an air inlet assembly and a feeding assembly, the winnowing box is arranged on the rack, a winnowing cavity is formed in the winnowing box, and an air outlet hole communicated with the winnowing cavity is formed in the winnowing box; the air inlet assembly is arranged at the end, away from the air outlet hole, of the winnowing box. The feeding assembly is arranged at the upper end of the winnowing box and located on the side close to the air inlet assembly. The multiple discharging blocks are arranged at the lower end of the winnowing box, and each discharging block is provided with a discharging hole communicating with the winnowing cavity. The device further comprises a plugging device, one plugging device corresponds to one discharging block, the plugging device comprises two first rotating shafts, plugging plates and an adjusting mechanism, the two first rotating shafts are rotationally arranged on the winnowing box, the plugging plates are arranged on the first rotating shafts, and the adjusting mechanism is arranged on the plugging plates. The two blocking plates jointly seal the discharging hole; the adjusting mechanism is arranged on the winnowing box, and the two first rotating shafts are both connected with the adjusting mechanism. The method has the effects of improving the efficiency and increasing the tea utilization rate.

Description

Technical Field

[0001] The present application relates to the technical field of tea screening equipment, and in particular to an air selection device for screening broken tea. Background Art

[0002] In the tea factory, air separation is carried out according to the different specific gravities of each tea leaf to obtain tea products of different sizes.

[0003] At present, a Chinese patent with authorization announcement number CN202028438U discloses a tea air sorting machine, including a sorting box, which is installed on a frame, one end of the sorting box is designed with an air inlet, the other end is installed with an air outlet, an observation window is installed on the side of the sorting box, and a tea outlet is designed at the bottom. An air inlet pipe is installed on the air inlet, a fan is installed at one end of the air inlet pipe, a tea feed pipe is installed above the air inlet pipe, a feed hopper is installed above the feed pipe, a vibrator is installed below the feed hopper, and a wind shield is designed and installed at the interface between the feed pipe and the air inlet pipe. The air inlet is 20 cm to 80 cm higher than the bottom in the sorting box; there are no less than three tea outlets at the bottom of the sorting box.

[0004] A collecting box will be placed at the tea outlet. When one of the collecting boxes under the tea outlet is full of tea leaves, it needs to be replaced. However, when replacing the collecting box, the equipment is still running, and the tea leaves that need to be air-sorted still enter the air-sorting box through the feed hopper for air-sorting. Therefore, when replacing the collecting box, some tea leaves will still move out of the tea outlet, causing the sorted tea to fall to the ground. The tea leaves that fall on the ground need to be collected, and after collection, the tea leaves need to be cleaned again. The cleaning of the tea leaves is difficult, which greatly wastes manpower and material resources and reduces production efficiency. Utility Model Content

[0005] In order to improve efficiency, the present application provides a wind selection device for screening broken tea.

[0006] The present application provides a wind selection device for screening broken tea, which adopts the following technical solution:

[0007] A wind selection device for screening broken tea comprises a frame, a wind selection box, a discharge block, an air inlet assembly and a feed assembly, wherein the wind selection box is arranged on the frame, a wind selection chamber is formed in the wind selection box, and an air outlet hole connected to the wind selection chamber is opened on the wind selection box; the air inlet assembly is arranged on one end of the wind selection box away from the air outlet hole; the feed assembly is arranged at the upper end of the wind selection box and on a side close to the air inlet assembly; a plurality of discharge blocks are arranged, and the plurality of discharge blocks are arranged at the lower end of the wind selection box, each The discharging blocks are each provided with a discharging hole connected to the air separation chamber; the discharging blocks also include a sealing device, one sealing device corresponds to one discharging block, the sealing device includes a first rotating shaft, a sealing plate and an adjusting mechanism, two first rotating shafts are provided, and the two first rotating shafts are rotatably provided on the air separation box, each of the first rotating shafts is provided with the sealing plate, and the two sealing plates jointly seal the discharging hole; the adjusting mechanism is provided on the air separation box, and the two first rotating shafts are connected to the adjusting mechanism.

[0008] By adopting the above technical scheme, the tea leaves that need to be air-selected enter the air-selection chamber through the feeding assembly, and then the air-inlet assembly blows air into the air-selection chamber, and the wind then moves out of the air-selection chamber through the air outlet holes; the tea leaves will fall into different discharge blocks according to their own characteristics, and finally enter the collecting box under the discharge block through the discharge holes on the discharge blocks; when the collecting box is full of tea leaves and needs to be replaced, the two first rotating shafts are driven to rotate by the adjusting mechanism, and the two first rotating shafts drive the two sealing plates to rotate, so that the two sealing plates block the discharge holes of the discharge, and then the collecting box is replaced; when the sealing device replaces the collecting box, it can reduce the phenomenon of tea leaves falling to the ground, thereby reducing the time for cleaning; therefore, the provided sealing device can improve the overall processing efficiency of tea leaves, and can also reduce tea losses, improve tea utilization, etc.

[0009] Optionally, the adjustment mechanism includes a first adjustment shaft, a worm, a worm wheel and an adjustment assembly. The first adjustment shaft is rotatably arranged on the air separation box. Two worms are arranged, and both worms are arranged on the first adjustment shaft, and the spiral directions of the two worms are opposite; each of the first rotating shafts is provided with a worm wheel, and the two worm wheels are respectively engaged with the two worms; the adjustment assembly is arranged on the air separation box and connected to the first adjustment shaft.

[0010] By adopting the above technical solution, the adjustment component drives the first adjustment shaft to rotate, the first adjustment shaft drives the two worms to rotate, and the two worms will drive the two worm wheels to rotate. Because the spiral directions of the two worms are opposite, the rotation directions of the two worm wheels will be opposite; the two worm wheels drive the two first rotating shafts to rotate, and the first rotating shafts drive the sealing plates to rotate, so that the two sealing plates block the discharge hole of the lower material block.

[0011] Optionally, the adjustment assembly includes a second adjustment shaft, a rocker, a first bevel gear and a second bevel gear, the second adjustment shaft is rotatably set on the air separation box, and the rocker is set on the second adjustment shaft; the first bevel gear is keyed to the second adjustment shaft; the second bevel gear is keyed to the first adjustment shaft and meshes with the first bevel gear.

[0012] By adopting the above technical solution, the rocker is rotated, and the rocker drives the second adjustment shaft to rotate, the first bevel gear on the second adjustment shaft will drive the second bevel gear to rotate, and the second bevel gear drives the first adjustment shaft to rotate.

[0013] Optionally, a fixing component is provided on the air separation box, and the fixing component includes a fixing block, a fixing screw and a knob block. The fixing block is provided on the air separation box, and a limiting hole is provided on the fixing block. The fixing screw is provided on the rocker arm, and one end of the fixing screw away from the rocker arm passes through the limiting hole. The knob block is provided with a threaded hole that cooperates with the fixing screw, and the knob block can resist the fixing block.

[0014] By adopting the above technical solution, when the position of the rocker is determined, the knob block is rotated to make the knob block press against the fixed block, thereby reducing the shaking of the rocker and reinforcing the position of the rocker; the set fixing component can improve the stability of the rocker and reduce the phenomenon of the rocker moving due to accidental contact.

[0015] Optionally, a mounting groove connected to the air separation chamber is provided at one end of the air separation box away from the air inlet assembly, and a blocking mechanism is provided on the air separation box. The blocking mechanism includes a blocking block and a connecting bolt. The blocking block is clamped in the mounting groove, and the air outlet is provided on the blocking block; the connecting bolt passes through the blocking block and is threadedly connected to the air separation box.

[0016] By adopting the above technical solution, when the air selection chamber needs to be cleaned, the connecting bolt is rotated so that the connecting bolt is no longer connected to the thread of the air selection box; then the blocking block is separated from the installation groove, and the inside of the air selection chamber is cleaned or repaired.

[0017] Optionally, an anti-blocking mechanism is provided on the air separation box, and the anti-blocking mechanism includes a connecting block, a sliding block, an anti-blocking scraper and a moving component. The connecting block is set on the air separation box, the sliding block is slidably set on the connecting block through the moving component, and the anti-blocking scraper is set on the sliding block and abuts against the blocking block on one side close to the air separation chamber.

[0018] By adopting the above technical solution, some tea leaves will adhere to the blocking block and block the air outlet, affecting the air outlet. At this time, the moving component is started, and the moving component drives the slider to move on the connecting block. The anti-blocking scraper on the slider will drive the tea leaves to move, so that the tea leaves no longer block the air outlet.

[0019] Optionally, the feed assembly includes a feed block, a second rotating shaft, a sealing block and a driving motor, the feed block is arranged on the air separation box, and a feed hole connected to the air separation chamber is opened on the feed block; the second rotating shaft is rotatably arranged on the feed block, and the sealing block is arranged on the second rotating shaft and can seal the feed hole; the driving motor is arranged on the feed block and the output shaft is connected to the second rotating shaft.

[0020] By adopting the above technical solution, when there is a lot of tea leaves in the air selection chamber, the driving motor is started, and the output shaft of the driving motor drives the second rotating shaft to rotate, and the second rotating shaft drives the sealing block to rotate, so that the sealing block blocks the feed hole of the feed block, thereby preventing the tea leaves from entering the air selection chamber.

[0021] Optionally, a dispersion mechanism is provided on the frame, and the dispersion mechanism includes a telescopic rod, a dispersion frame, a spring, a vibration motor and a dispersion assembly, the telescopic rod is provided on the frame, the dispersion frame is provided on the telescopic rod, and the discharging end of the dispersion frame is aligned with the feeding hole; one end of the spring is connected to the frame and the other end is connected to the dispersion frame, and the vibration motor is provided on the dispersion frame; the dispersion assembly is provided on the dispersion frame.

[0022] By adopting the above technical solution, the tea leaves that need to be selected by air are transported to the position of the dispersing component of the dispersing rack, and the tea leaves are spread out by the dispersing component; when the vibration motor is started, the vibration motor will drive the dispersing rack to shake, and the tea leaves will enter the feed hole of the feed block through the dispersing component.

[0023] Optionally, the dispersion component includes a support plate, a first dispersion block and a second dispersion block, the support plate is arranged at one end of the dispersion rack away from the feed block, the first dispersion block is tilted on the support plate, the relative height of the first dispersion block away from the feed block end is higher than the relative height close to the feed block end, the first dispersion block is provided with a plurality of first guide grooves, and the plurality of first guide grooves gather toward the end close to the feed block; the second dispersion block is tilted on one end of the dispersion rack close to the feed block, the relative height of the second dispersion block close to the first dispersion block end is higher than the relative height away from the first dispersion block end, the second dispersion block is provided with a plurality of second guide grooves, and the plurality of second guide grooves gather toward the end close to the first dispersion block.

[0024] By adopting the above technical solution, the tea leaves on the first dispersion block will move toward the second dispersion block through the first guide groove, and the tea leaves will gather toward the center of the first dispersion block; then the tea leaves on the first dispersion block enter the second guide groove of the second dispersion block, and under the action of the second guide groove, they will enter the feed hole of the feed block, and the tea leaves will be dispersed under the action of the second guide groove.

[0025] Optionally, a partition is provided on the air separation box between two connected discharge blocks.

[0026] By adopting the above technical solution, the provided partition can reduce the phenomenon of tea leaves falling into the discharge holes of other discharge blocks, thereby ensuring the quality of air selection.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The blocking device can improve the overall processing efficiency of tea leaves, reduce tea loss, and improve tea utilization rate;

[0029] 2. The fixed components can improve the stability of the joystick and reduce the movement of the joystick due to accidental contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the wind selection device for screening broken tea in the embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of the dispersion mechanism in the embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the structure of the first guide groove in the embodiment of the present application;

[0033] Figure 4 This is a schematic diagram of the structure of the partition in the embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of the structure of the adjustment component in the embodiment of the present application;

[0035] Figure 6 This is a schematic diagram of the structure of the second adjustment shaft in the embodiment of the present application;

[0036] Figure 7 It is a structural schematic diagram of the anti-blocking mechanism in the embodiment of the present application.

[0037] Figure numerals: 11, frame; 12, air separation box; 121, air outlet; 13, discharge block; 14, air inlet assembly; 141, fan; 142, air inlet pipe; 2, blocking device; 21, first rotating shaft; 22, blocking plate; 3, adjustment mechanism; 31, first adjustment shaft; 32, worm; 33, worm wheel; 34, adjustment assembly; 341, second adjustment shaft; 342, rocker; 343, first bevel gear; 344, second bevel gear; 4, fixing assembly; 41, fixing block; 411, limiting hole; 412, movable groove; 42, fixing screw; 43, knob block; 5, blocking mechanism; 51, Block block; 52, connecting bolt; 6, anti-blocking mechanism; 61, connecting block; 611, slide groove; 612, connecting groove; 62, slider; 63, anti-blocking scraper; 64, moving assembly; 641, screw rod; 642, moving motor; 7, feeding assembly; 71, feeding block; 711, feeding hole; 72, sealing block; 73, driving motor; 8, dispersion mechanism; 81, telescopic rod; 82, dispersion rack; 83, spring; 84, dispersion assembly; 841, support plate; 842, first dispersion block; 8421, first guide groove; 843, second dispersion block; 8431, second guide groove; 9, partition. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-7 This application is described in further detail.

[0039] The embodiment of the present application discloses a wind selection device for screening broken tea.

[0040] refer to Figure 1 A wind selection device for screening broken tea comprises a frame 11, to which a wind selection box 12 is fixedly connected, and a wind selection chamber is formed in the wind selection box 12; a feeding assembly 7 is arranged on one end of the wind selection box 12 close to the frame 11, and the feeding assembly 7 is located at the upper end of the wind selection box 12; a dispersing mechanism 8 for conveying tea leaves into the feeding assembly 7 is arranged on the frame 11; a plurality of discharge blocks 13 are evenly arranged at the lower end of the wind selection box 12, and each of the discharge blocks 13 is provided with a discharge hole connected to the wind selection chamber; a plurality of blocking devices 2 are arranged on the wind selection box 12, and the blocking devices 2 correspond to the discharge blocks 13 one by one; a blocking mechanism 5 is arranged on the end of the wind selection box 12 away from the frame 11.

[0041] refer to Figure 1 and Figure 2 The feed assembly 7 includes a feed block 71 fixedly connected to the air separation box 12, and a feed hole 711 connected to the air separation chamber in the air separation box 12 is opened on the feed block 71; a second rotating shaft is rotatably connected to the feed block 71, and a sealing block 72 is fixedly connected to the second rotating shaft, and the sealing block 72 seals the feed hole 711 of the feed block 71; a drive motor 73 is rotatably connected to the side wall of the feed block 71, and the output shaft of the drive motor 73 is connected to the second rotating shaft.

[0042] The driving motor 73 is started, and the output shaft of the driving motor 73 drives the second rotating shaft to rotate, and the second rotating shaft drives the sealing block 72 to rotate, so that the sealing block 72 seals the feeding hole 711 of the feeding block 71 .

[0043] refer to Figure 2 and Figure 3 The dispersion mechanism 8 includes a telescopic rod 81, which includes a main rod fixed on the frame 11, and a groove is provided at one end of the main rod away from the frame 11, in which a secondary rod is slidably connected; four telescopic rods 81 are provided, and the secondary rods of the four telescopic rods 81 are commonly connected to a dispersion frame 82; a spring 83 is provided between the dispersion frame 82 and the frame 11, one end of the spring 83 is connected to the dispersion frame 82 and the other end is connected to the frame 11, and the telescopic rod 81 composed of the main rod and the secondary rod is located in the spring 83, that is, the spring 83 is sleeved on the telescopic rod 81. A vibration motor is connected to the side of the dispersion frame 82 close to the spring 83. The discharging end of the dispersion frame 82, that is, the end close to the feed block 71, is aligned with the feed hole 711 on the feed block 71 and connected to the feed hole 711. In other embodiments, the discharging end of the dispersion frame 82 can extend into the feed hole 711 of the feed block 71.

[0044] A dispersion assembly 84 is provided on the dispersion rack 82, and the dispersion assembly 84 includes a support plate 841 fixedly connected to the end of the dispersion rack 82 away from the feed block 71, and a first dispersion block 842 is obliquely fixedly connected to the support plate 841, and the relative height of the first dispersion block 842 close to the feed block 71 is lower than the relative height of the end away from the feed block 71; a plurality of first guide grooves 8421 are opened on the first dispersion block 842, and the plurality of first guide grooves 8421 gather in the direction close to the feed block 71, that is, the distance between two adjacent first guide grooves 8421 gradually decreases in the direction close to the feed block 71. The end of the dispersion rack 82 close to the feed block 71 is fixedly connected to the second dispersion block 843, and the second dispersion block 843 is located below the first dispersion block 842; the relative height of the second dispersion block 843 close to the first dispersion block 842 is higher than the relative height of the end away from the first dispersion block 842, and a plurality of second guide grooves 8431 are provided on the second dispersion block 843, and the plurality of second guide grooves 8431 gather in the direction close to the first dispersion block 842, that is, the distance between two adjacent second guide grooves 8431 gradually decreases in the direction close to the first dispersion block 842.

[0045] Start the vibration motor, which will drive the dispersion rack 82 to shake; the tea leaves first enter the first guide groove 8421 of the first dispersion block 842, then enter the second guide groove 8431 of the second dispersion block 843, and then enter the feed hole 711 of the feed block 71.

[0046] refer to Figure 1The air inlet assembly 14 includes an air inlet pipe 142 fixedly connected to one end of the air separation box 12 close to the frame 11, and the air inlet pipe 142 is connected to the air separation chamber; a fan 141 is fixedly connected to the frame 11, and the fan 141 is connected to one end of the air inlet pipe 142 away from the air separation box 12.

[0047] Reference 1 and Figure 4 A partition 9 is fixedly connected to the air separation box 12 between two adjacent material blocks. The partition 9 is located in the air separation chamber, and the heights of the plurality of partitions 9 gradually decrease in a direction away from the frame 11.

[0048] refer to Figure 1 , Figure 4 and Figure 5 The blocking device 2 includes two first rotating shafts 21, both of which are rotatably connected to the air separation box 12, and each of the first rotating shafts 21 is fixedly connected to a blocking plate 22, and the two first blocking plates 22 jointly block the discharge hole of the discharge block 13.

[0049] An adjusting mechanism 3 is provided on the air separation box 12, and the adjusting mechanism 3 includes a first adjusting shaft 31 rotatably connected to the air separation box 12, and both ends of the first adjusting shaft 31 are fixedly connected with worms 32, and the spiral directions of the two worms 32 are opposite; each first rotating shaft 21 is keyed to a worm wheel 33, and the two worm wheels 33 are respectively engaged with the two worms 32.

[0050] Figure 5 and Figure 6 An adjustment component 34 is provided on the air separation box 12, and the adjustment component 34 includes a second adjustment shaft 341 rotatably connected to the air separation box 12, one end of the second adjustment shaft 341 is fixedly connected to a rocker 342, and the end of the second adjustment shaft 341 away from the rocker 342 is keyed to a first bevel gear 343; a second bevel gear 344 meshing with the first bevel gear 343 is keyed to the first adjustment shaft 31.

[0051] Rotate the rocker 342, the rocker 342 drives the second adjusting shaft 341 to rotate, the second adjusting shaft 341 drives the first bevel gear 343 to rotate, the first bevel gear 343 drives the second bevel gear 344 to rotate, the second bevel gear 344 drives the first adjusting shaft 31 to rotate, the first adjusting shaft 31 drives the two worms 32 to rotate, the two worms 32 will drive the two worm wheels 33 to rotate, because the spiral directions of the two worms 32 are opposite, the rotation directions of the two worm wheels 33 will be opposite; the two worm wheels 33 drive the two first rotating shafts 21 to rotate, the first rotating shaft 21 drives the sealing plate 22 to rotate, so that the two sealing plates 22 block the discharge hole of the lower material block.

[0052] Reference 5 and Figure 6A fixing component 4 is provided on the side wall of the air separation box 12, and the fixing component 4 includes a fixing block 41 fixedly connected to the air separation box 12, a movable groove 412 is provided on the fixing block 41, and a limiting hole 411 connected to the movable groove 412 is provided on the end of the fixing block 41 away from the air separation box 12, and the end of the second adjusting shaft 341 away from the second bevel gear 344 is located in the movable groove 412 of the fixing block 41, and the rocker 342 is also located in the movable groove 412; a fixing screw 42 is fixedly connected to the side of the rocker 342 close to the limiting hole 411, and the end of the fixing screw 42 away from the rocker 342 passes through the limiting hole 411; a knob block 43 is provided on the end of the fixing screw 42 passing through the rocker 342, and a threaded hole threadedly connected to the fixing screw 42 is provided on the knob block 43, and the knob block 43 can be tightly pressed against the fixing block 41.

[0053] When the position of the rocking rod 342 is determined, the knob block 43 is rotated to make the knob block 43 press against the fixing block 41 to reduce the shaking of the rocking rod 342 and reinforce the position of the rocking rod 342 .

[0054] refer to Figure 1 and Figure 4 The end of the air separation box 12 away from the frame 11 is provided with a mounting slot connected to the air separation chamber. The blocking mechanism 5 includes a blocking block 51 engaged with the mounting slot, and the blocking block 51 is provided with an air outlet 121 connected to the air separation chamber; the blocking block 51 is provided with a connecting bolt 52, and the connecting bolt 52 passes through the blocking block 51 and is threadedly connected to the air separation box 12.

[0055] refer to Figure 1 , Figure 4 and Figure 7 The wind selection box 12 is provided with an anti-blocking mechanism 6, which includes a connecting block 61 fixedly connected to the wind selection box 12, the connecting block 61 is located in the wind selection chamber, the connecting block 61 is provided with a chute 611 along its vertical direction, and a connecting groove 612 is provided on the end of the connecting block 61 close to the blocking block 51; a slider 62 is slidably connected in the chute 611 of the connecting block 61, and an anti-blocking scraper 63 is fixedly connected to the slider 62, and the end of the anti-blocking scraper 63 away from the slider 62 passes through the connecting groove 612 and hits the side of the blocking block 51 close to the wind selection chamber. A moving assembly 64 is provided on the connecting block 61, and the moving assembly 64 includes a screw rod 641 rotatably connected in the chute 611, the screw rod 641 passes through the slider 62 and is threadedly connected to the slider 62; a moving motor 642 is fixedly connected to the connecting block 61, and the output shaft of the moving motor 642 is connected to one end of the screw rod 641.

[0056] The moving motor 642 is started, and the output shaft of the moving motor 642 drives the screw rod 641 to rotate, and the screw rod 641 drives the slider 62 to slide in the slide groove 611 of the connecting block 61, and the slider 62 drives the anti-blocking scraper 63 to move.

[0057] The implementation principle of the air selection device for screening broken tea in the embodiment of the present application is: use a bucket elevator or a conveying pipe to convey the tea leaves that need to be air-selected to the first dispersion block 842 of the dispersion rack 82; start the vibration motor, the tea leaves on the first dispersion block 842 will move toward the direction close to the second dispersion block 843 through the first guide groove 8421, and the tea leaves will gather toward the center of the first dispersion block 842; then the tea leaves on the first dispersion block 842 enter the second guide groove 8431 of the second dispersion block 843, and under the action of the second guide groove 8431, they will enter the feed hole 711 of the feed block 71, and the tea leaves will be dispersed under the action of the second guide groove 8431.

[0058] The tea leaves in the feed hole 711 of the feed block 71 will enter the air selection chamber, and the fan 141 will be started, and the wind generated by the fan 141 will be blown into the air selection chamber through the air inlet pipe 142; under the action of the wind, the tea leaves will fall into different discharge blocks 13 according to their own characteristics, and finally enter the collection box through the discharge holes on the discharge block 13.

[0059] When the collecting box is full of tea leaves and needs to be replaced, the knob block 43 is first turned so that the knob no longer presses against the fixing block 41, and then the rocker 342 is turned so that the two blocking plates 22 block the discharge hole for discharging the tea leaves, and then the collecting box is replaced.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wind selection device for screening broken tea, comprising a frame (11), a wind selection box (12), a discharge block (13), an air inlet assembly (14) and a feed assembly (7), wherein the wind selection box (12) is arranged on the frame (11), a wind selection chamber is formed in the wind selection box (12), and an air outlet hole (121) communicating with the wind selection chamber is formed on the wind selection box (12); the air inlet assembly (14) is arranged on an end of the wind selection box (12) away from the air outlet hole (121); the feed assembly (7) is arranged at the upper end of the wind selection box (12) and on a side close to the air inlet assembly (14); a plurality of discharge blocks (13) are provided, and the plurality of discharge blocks (13) are all arranged at the lower end of the wind selection box (12), and each of the discharge blocks (13) is provided with a discharge hole communicating with the wind selection chamber; characterized in that It also comprises a blocking device (2), one blocking device (2) corresponding to one discharge block (13), the blocking device (2) comprising a first rotating shaft (21), a blocking plate (22) and an adjusting mechanism (3), two first rotating shafts (21) are provided, and the two first rotating shafts (21) are both rotatably provided on the air separation box (12), each of the first rotating shafts (21) is provided with the blocking plate (22), and the two blocking plates (22) jointly seal the discharge hole; the adjusting mechanism (3) is provided on the air separation box (12), and the two first rotating shafts (21) are both connected to the adjusting mechanism (3).

2. The winnowing device for screening broken tea according to claim 1, characterized in that: The adjustment mechanism (3) comprises a first adjustment shaft (31), a worm (32), a worm wheel (33) and an adjustment assembly (34); the first adjustment shaft (31) is rotatably arranged on the air separation box (12); two worms (32) are arranged, and the two worms (32) are arranged on the first adjustment shaft (31), and the spiral directions of the two worms (32) are opposite; each of the first rotating shafts (21) is provided with a worm wheel (33), and the two worm wheels (33) are respectively engaged with the two worms (32); the adjustment assembly (34) is arranged on the air separation box (12) and is connected to the first adjustment shaft (31).

3. The winnowing device for screening broken tea according to claim 2, characterized in that: The adjustment component (34) includes a second adjustment shaft (341), a rocker (342), a first bevel gear (343) and a second bevel gear (344); the second adjustment shaft (341) is rotatably arranged on the air separation box (12); the rocker (342) is arranged on the second adjustment shaft (341); the first bevel gear (343) is key-connected to the second adjustment shaft (341); the second bevel gear (344) is key-connected to the first adjustment shaft (31) and meshes with the first bevel gear (343).

4. The wind selection device for screening broken tea according to claim 3, characterized in that: The air separation box (12) is provided with a fixing component (4), and the fixing component (4) includes a fixing block (41), a fixing screw (42) and a knob block (43); the fixing block (41) is provided on the air separation box (12), and a limiting hole (411) is provided on the fixing block (41); the fixing screw (42) is provided on the rocker (342), and one end of the fixing screw (42) away from the rocker (342) passes through the limiting hole (411); the knob block (43) is provided with a threaded hole that cooperates with the fixing screw (42), and the knob block (43) can contact the fixing block (41).

5. The wind selection device for screening broken tea according to claim 1, characterized in that: An installation groove connected to the air separation chamber is provided at one end of the air separation box (12) away from the air inlet assembly (14); a blocking mechanism (5) is provided on the air separation box (12); the blocking mechanism (5) comprises a blocking block (51) and a connecting bolt (52); the blocking block (51) is engaged with the installation groove; the air outlet (121) is provided on the blocking block (51); the connecting bolt (52) passes through the blocking block (51) and is threadedly connected to the air separation box (12).

6. The wind selection device for screening broken tea according to claim 5, characterized in that: The air separation box (12) is provided with an anti-blocking mechanism (6), and the anti-blocking mechanism (6) comprises a connecting block (61), a sliding block (62), an anti-blocking scraper (63) and a moving component (64); the connecting block (61) is provided on the air separation box (12); the sliding block (62) is slidably provided on the connecting block (61) through the moving component (64); the anti-blocking scraper (63) is provided on the sliding block (62) and abuts against the blocking block (51) on one side close to the air separation chamber.

7. The winnowing device for screening broken tea according to claim 1, characterized in that: The feed assembly (7) comprises a feed block (71), a second rotating shaft, a sealing block (72) and a driving motor (73); the feed block (71) is arranged on the air separation box (12); the feed block (71) is provided with a feed hole (711) which is connected to the air separation chamber; the second rotating shaft is rotatably arranged on the feed block (71); the sealing block (72) is arranged on the second rotating shaft and can seal the feed hole (711); the driving motor (73) is arranged on the feed block (71) and the output shaft is connected to the second rotating shaft.

8. The wind selection device for screening broken tea according to claim 7, characterized in that: The frame (11) is provided with a dispersion mechanism (8), the dispersion mechanism (8) comprising a telescopic rod (81), a dispersion frame (82), a spring (83), a vibration motor and a dispersion assembly (84), the telescopic rod (81) being provided on the frame (11), the dispersion frame (82) being provided on the telescopic rod (81), the discharging end of the dispersion frame (82) being aligned with the feeding hole (711); one end of the spring (83) being connected to the frame (11) and the other end being connected to the dispersion frame (82), the vibration motor being provided on the dispersion frame (82); and the dispersion assembly (84) being provided on the dispersion frame (82).

9. The wind selection device for screening broken tea according to claim 8, characterized in that: The dispersion component (84) comprises a support plate (841), a first dispersion block (842) and a second dispersion block (843); the support plate (841) is arranged at an end of the dispersion frame (82) away from the feed block (71); the first dispersion block (842) is arranged obliquely on the support plate (841); the relative height of the end of the first dispersion block (842) away from the feed block (71) is higher than the relative height of the end close to the feed block (71); the first dispersion block (842) is provided with a plurality of first guide grooves (8421); The first guide groove (8421) gathers toward one end close to the feed block (71); the second dispersion block (843) is obliquely arranged at one end of the dispersion frame (82) close to the feed block (71), the relative height of the second dispersion block (843) close to the first dispersion block (842) is higher than the relative height of the end away from the first dispersion block (842), and a plurality of second guide grooves (8431) are provided on the second dispersion block (843), and the plurality of second guide grooves (8431) gather toward one end close to the first dispersion block (842).

10. The wind selection device for screening broken tea according to claim 1, characterized in that: A partition plate (9) is provided on the air separation box (12) between two of the discharge blocks (13).

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