CN212093261U

CN212093261U - Vibrating letter sorting equipment for tea processing

Info

Publication number: CN212093261U
Application number: CN202020214572.0U
Authority: CN
Inventors: 李家宝
Original assignee: Fujian Xiangshanyan Tea Industry Co ltd
Current assignee: Fujian Xiangshanyan Tea Industry Co ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2020-12-08
Anticipated expiration: 2030-02-26

Abstract

The utility model discloses a vibrating letter sorting equipment is used in tea processing, the power distribution box comprises a box body, first conveyer belt and second conveyer belt, the inside upper end position slope of box is provided with first conveyer belt, the inside lower extreme position slope of box is provided with the second conveyer belt simultaneously, and the ascending one end of first conveyer belt slope decurrent one end and second conveyer belt slope is located the inside homonymy of box, one side of first conveyer belt slope lower extreme is provided with first division board, the first slope delivery board of fixedly connected with and second slope delivery board are distinguished to the lower extreme both sides of first division board, one side of second conveyer belt slope lower extreme is provided with the second division board, the lower extreme both sides of second division board are fixedly connected with third slope delivery board and fourth slope delivery board respectively. The utility model discloses a be provided with a series of structures and make this device can realize the high-efficient accurate letter sorting of tealeaves in the use, and to the damage of tealeaves when this device avoids tealeaves to sort, improved the quality of tealeaves.

Description

Vibrating letter sorting equipment for tea processing

Technical Field

The utility model relates to a tealeaves letter sorting equipment technical field specifically is a vibrating letter sorting equipment for tea processing.

Background

Present tealeaves can sort tealeaves according to the difference of tealeaves size at the in-process of production and processing, in order to make things convenient for the classification to tealeaves, in the past all be artifical and sort, but along with the continuous development of science and technology, tealeaves letter sorting equipment replaces artifical letter sorting gradually, at present, current tealeaves letter sorting equipment mainly combines through centrifugation and vibration to realize the letter sorting, but such tealeaves letter sorting equipment exists that the letter sorting effect is poor, the not enough of letter sorting inefficiency, in addition, current tealeaves letter sorting equipment easily causes the damage of tealeaves when the letter sorting, influence the quality of tealeaves, consequently, it is necessary to improve prior art, in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to provide a vibrating letter sorting equipment is used in tea processing to there are the not enough and current tealeaves letter sorting equipment that letter sorting effect is poor, letter sorting inefficiency in solving the current tealeaves letter sorting equipment that proposes among the above-mentioned background art when the letter sorting easily cause the damage of tealeaves, influence the problem of tealeaves quality.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a vibrating sorting device for tea processing comprises a box body, a first conveying belt and a second conveying belt, wherein the first conveying belt is obliquely arranged at the upper end position in the box body, the second conveying belt is obliquely arranged at the lower end position in the box body, the downward inclined end of the first conveying belt and the upward inclined end of the second conveying belt are positioned at the same side in the box body, a first partition plate is arranged at one side of the downward inclined end of the first conveying belt, a first inclined conveying plate and a second inclined conveying plate are respectively and fixedly connected to two sides of the lower end of the first partition plate, a second partition plate is arranged at one side of the downward inclined end of the second conveying belt, a third inclined conveying plate and a fourth inclined conveying plate are respectively and fixedly connected to two sides of the lower end of the second partition plate, first mounting plates are symmetrically arranged at two sides of the first conveying belt, second mounting plates are symmetrically arranged at two sides of, two through first link fixed connection, two simultaneously on the bottom surface that first mounting panel central point put through second link fixed connection on the bottom surface that second mounting panel central point put, be provided with the loading hopper on the box top surface directly over the first conveyer belt slope, fixed mounting has the controller on the surface one side of box.

Preferably, the both ends of first conveyer belt inboard are all slided the registrates and are had first roller, the fixed registrates of central point of first roller puts first axis of rotation, first axis of rotation passes through antifriction bearing and rotates the connection on first mounting panel, the outside that first mounting panel extended to first mounting panel and the output gomphosis of first motor are passed to the one end of the first axis of rotation of first conveyer belt one side, first motor fixed mounting is on the surface of first mounting panel, and first motor passes through conducting wire and controller electric connection.

Preferably, a first fixing plate is arranged below the first connecting frame in an aligned manner, both ends of the first fixing plate are fixedly welded on the inner wall of the box body, a first vibrating machine is fixedly arranged at the center position of the top of the first fixing plate, the upper end of the first vibrator is fixedly connected to the bottom surface of the first connecting frame, the two sides of the first vibrator are symmetrically provided with first telescopic columns, one end of each first telescopic column is fixedly connected to the first fixing plate, meanwhile, the other end of the first telescopic column penetrates through the first connecting frame and extends to the upper part of the first connecting frame to be fixedly connected with the first limiting sheet, the first vibrator is electrically connected with the controller through a conducting wire, a first return spring is sleeved on a first telescopic column at the position between the first fixing plate and the first connecting frame in a sliding manner, and two ends of the first return spring are respectively and fixedly connected to the first fixing plate and the first connecting frame.

Preferably, the both ends of second conveyer belt inboard are all slided the registrates and are had the second roller, the central point of second roller puts fixed registrates and has the second axis of rotation, the second axis of rotation passes through antifriction bearing and rotates the connection on the second mounting panel, the output gomphosis of the outside that the second mounting panel extended to the second mounting panel and second motor is passed to the one end of the second axis of rotation of second conveyer belt one side, second motor fixed mounting is on the surface of second mounting panel, and the second motor passes through conducting wire and controller electric connection.

Preferably, a second fixing plate is arranged below the second connecting frame in an aligned manner, both ends of the second fixing plate are fixedly welded on the inner wall of the box body, a second vibrating machine is fixedly arranged at the center position of the top of the second fixing plate, the upper end of the second vibrator is fixedly connected on the bottom surface of the second connecting frame, the two sides of the second vibrator are symmetrically provided with second telescopic columns, one end of each second telescopic column is fixedly connected on a second fixing plate, meanwhile, the other end of the second telescopic column passes through the second connecting frame and extends to the upper part of the second connecting frame to be fixedly connected with the second limiting sheet, the second vibrator is electrically connected with the controller through a conducting wire, a second reset spring is sleeved on a second telescopic column at the position between the second fixing plate and the second connecting frame in a sliding manner, and two ends of the second return spring are respectively and fixedly connected to the second fixing plate and the second connecting frame.

Preferably, both sides of the first inclined conveying plate, the second inclined conveying plate, the third inclined conveying plate and the fourth inclined conveying plate are fixedly welded on the inner wall of the box body, a first discharge port is formed in the box body above the inclined lower end of the first inclined conveying plate, a second discharge port is formed in the box body above the inclined lower end of the third inclined conveying plate, and a third discharge port is formed in the box body above the inclined lower end of the fourth inclined conveying plate.

Preferably, a plurality of first sorting plates are uniformly arranged on the outer surface of the first conveying belt along the conveying direction of the first conveying belt, a plurality of second sorting plates are uniformly arranged on the outer surface of the second conveying belt along the conveying direction of the second conveying belt, and the distance between two adjacent first sorting plates is less than the distance between two adjacent second sorting plates.

(III) advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model is provided with the first sorting plate, the second sorting plate, the first separating plate and the second separating plate, when in use, the tea on the first conveying belt is larger than the distance between the two adjacent first sorting plates through the arrangement that the distance between the two adjacent first sorting plates is smaller than the distance between the two adjacent second sorting plates, the tea is positioned above the first sorting plate, the smaller tea is positioned at the position between the two adjacent first sorting plates, through the arrangement of the first separating plate, the larger tea falls into the second conveying belt from the second inclined conveying plate, the smaller tea falls onto the first inclined conveying plate, is discharged from the first discharge port, falls onto the tea on the second conveying belt, the classification is realized again through the arrangement of the second sorting plates, the larger tea falls into the fourth inclined conveying plate on the second conveying belt, smaller tea leaves fall onto the third inclined conveying plate, the arrangement can efficiently and accurately sort the tea leaves, and the arrangement solves the problems of poor sorting effect and low sorting efficiency of the existing tea leaf sorting equipment;

(2) the utility model discloses a set up first conveyer belt and second conveyer belt, in this setting, carry tealeaves through the setting of first conveyer belt and second conveyer belt in grades, avoid rotating the centrifugation, alleviate the damage to tealeaves, should set up and solved the damage that current tealeaves letter sorting equipment easily caused tealeaves when the letter sorting, influence the problem of tealeaves quality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the box body of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 2 according to the present invention;

the reference numbers in the figures are: 1. a hopper; 2. a box body; 3. a first discharge port; 4. a second discharge port; 5. a controller; 6. a first motor; 7. a first mounting plate; 8. a first connecting frame; 9. a first inclined conveying plate; 10. a third inclined conveying plate; 11. a first sorting plate; 12. a first conveyor belt; 13. a first partition plate; 14. a second inclined conveying plate; 15. a second sorting plate; 16. a second conveyor belt; 17. a second motor; 18. a third discharge port; 19. a fourth inclined conveying plate; 20. a first rotating shaft; 21. a first roller; 22. a first limiting sheet; 23. a first vibrator; 24. a second partition plate; 25. a second roller; 26. a second rotating shaft; 27. a second limiting sheet; 28. a second vibrator; 29. a second mounting plate; 30. a second link frame; 31. a second telescopic column; 32. a second return spring; 33. a second fixing plate; 34. a first telescopic column; 35. a first return spring; 36. a first fixing plate; 37. a rolling bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a vibrating type sorting device for tea processing comprises a box body 2, a first conveying belt 12 and a second conveying belt 16, wherein the first conveying belt 12 is obliquely arranged at the upper end inside the box body 2, the second conveying belt 16 is obliquely arranged at the lower end inside the box body 2, the first conveying belt 12 and the second conveying belt 16 are arranged to convey tea, the downward oblique end of the first conveying belt 12 and the upward oblique end of the second conveying belt 16 are positioned at the same side inside the box body 2, the arrangement can realize that tea subjected to primary classification on the first conveying belt 12 falls onto the second conveying belt 16 and continues classification, a first partition plate 13 is arranged at one side of the downward oblique end of the first conveying belt 12, the tea subjected to sorting on the first conveying belt 12 can be separated and conveyed through the arrangement of the first partition plate 13, a first oblique conveying plate 9 and a second oblique conveying plate 14 are fixedly connected to two sides of the lower end of the first partition plate 13 respectively, the first inclined conveying plate 9 is arranged for conveying smaller tea leaves, the second inclined conveying plate 14 is arranged for conveying larger tea leaves, the second conveying belt 16 is provided with a second partition plate 24 at one side inclined to the lower end, the second partition plate 24 is arranged for separating and conveying the tea leaves sorted by the second conveying belt 16, the third inclined conveying plate 10 and the fourth inclined conveying plate 19 are fixedly connected to the two sides of the lower end of the second partition plate 24 respectively, the third inclined conveying plate 10 is arranged for conveying smaller tea leaves, the fourth inclined conveying plate 19 is used for conveying larger tea leaves, the first mounting plates 7 are symmetrically arranged on the two sides of the first conveying belt 12, the second mounting plates 29 are symmetrically arranged on the two sides of the second conveying belt 16, the first mounting plates 7 and the second mounting plates 29 are arranged to facilitate the fixed mounting of the first conveying belt 12 and the second conveying belt 16, the two first mounting plates 7 are fixedly connected on the bottom surfaces of the central positions through the first connecting frames 8, meanwhile, the bottom surfaces of the central positions of the two second mounting plates 29 are fixedly connected through a second connecting frame 30, the top surface of the box body 2 right above the inclined upper end of the first conveying belt 12 is provided with a feeding hopper 1, the feeding hopper 1 is used for adding tea raw materials, one side of the outer surface of the box body 2 is fixedly provided with a controller 5, and the controller 5 is used for controlling electrical elements in the device.

Further, the inboard both ends of first conveyer belt 12 slip the registrate and have first roller 21, fixed registrate has first axis of rotation 20 in the first roller 21, and the both ends of first axis of rotation 20 all pass first roller 21 and extend to the outside of first roller 21 and pass through antifriction bearing 37 and rotate and connect on first mounting panel 7, the outside that first mounting panel 7 extended to first mounting panel 7 is passed to the one end of the first axis of rotation 20 of first conveyer belt 12 one side and the output gomphosis of first motor 6, first motor 6 passes through bolt fixed mounting on one side surface of first mounting panel 7, the input and the controller 5 electric connection of first motor 6, the setting of first axis of rotation 20 can play driven effect.

Further, a first fixing plate 36 is vertically aligned below the first connecting frame 8, two ends of the first fixing plate 36 are fixedly welded on the inner wall of the box body 2, a first vibrator 23 is fixedly installed at the top center of the first fixing plate 36 through bolts, an output end of the first vibrator 23 is fixedly installed on the bottom surface of the first connecting frame 8, first telescopic columns 34 are symmetrically arranged on two sides of the first vibrator 23, one end of each first telescopic column 34 is fixedly welded on the top surface of the first fixing plate 36, the other end of each first telescopic column 34 penetrates through the first connecting frame 8 to extend to the upper side of the first connecting frame 8 to be fixedly connected with a first limiting plate 22, the first limiting plate 22 is arranged to limit the first telescopic columns 34, so that the first telescopic columns 34 are prevented from being separated from the first connecting frame 8, a first reset spring 35 is slidably sleeved on the first telescopic columns 34 at the position between the first connecting frame 8 and the first fixing plate 36, first reset spring 35 can play the effect of damping that resets, and the upper end fixed connection of first reset spring 35 is on the bottom surface of first link 8, and the lower extreme fixed connection of first reset spring 35 is on the top surface of first fixed plate 36 simultaneously, the input and the controller 5 electric connection of first bobbing machine 23.

Further, the inboard both ends of second conveyer belt 16 slip the registrate have second roller 25, fixed registrate has second axis of rotation 26 in the second roller 25, and the both ends of second axis of rotation 26 all pass the second roller 25 and extend to the outside of second roller 25 and pass through antifriction bearing 37 and rotate and connect on second mounting panel 29, the one end of the second axis of rotation 26 of second conveyer belt 16 one side passes second mounting panel 29 and extends to the outside of second mounting panel 29 and the output gomphosis of second motor 17, second motor 17 passes through bolt fixed mounting on one side surface of second mounting panel 29, the input and the controller 5 electric connection of second motor 17, the setting of second axis of rotation 26 can play driven effect.

Furthermore, a second fixing plate 33 is vertically aligned below the second connecting frame 30, two ends of the second fixing plate 33 are fixedly welded on the inner wall of the box body 2, a second vibrator 28 is fixedly installed at the top center of the second fixing plate 33 through bolts, an output end of the second vibrator 28 is fixedly installed on the bottom surface of the second connecting frame 30, second telescopic columns 31 are symmetrically arranged at two sides of the second vibrator 28, one end of each second telescopic column 31 is fixedly welded on the top surface of the second fixing plate 33, the other end of each second telescopic column 31 extends to the upper side of the second connecting frame 30 through the second connecting frame 30 and is fixedly connected with a second limiting plate 27, the second limiting plate 27 is provided to limit the second telescopic column 31, so that the second telescopic column 31 is prevented from being separated from the second connecting frame 30, a second return spring 32 is slidably sleeved on the second telescopic column 31 at a position between the second connecting frame 30 and the second fixing plate 33, the second return spring 32 can perform the function of returning and damping vibration, the upper end of the second return spring 32 is fixedly connected to the bottom surface of the second connecting frame 30, the lower end of the second return spring 32 is fixedly connected to the top surface of the second fixing plate 33, and the input end of the second vibrating machine 28 is electrically connected to the controller 5.

Further, first slope delivery board 9, second slope delivery board 14, the equal fixed welding in both sides of third slope delivery board 10 and fourth slope delivery board 19 is on the inner wall of box 2, be provided with first discharge gate 3 on the top box 2 of first slope delivery board 9 slope lower extreme, be provided with second discharge gate 4 on the top box 2 of third slope delivery board 10 slope lower extreme, be provided with third discharge gate 18 on the top box 2 of fourth slope delivery board 19 slope lower extreme, first slope delivery board 9, second slope delivery board 14, the setting of third slope delivery board 10 and fourth slope delivery board 19 can be carried away the tealeaves after the letter sorting, make things convenient for staff's collection.

Further, evenly be provided with a plurality of first sorting boards 11 along the direction that first conveyer belt 12 carried on the surface of first conveyer belt 12, first sorting board 11's setting can carry out first letter sorting to tealeaves, evenly be provided with a plurality of second sorting boards 15 along the direction that second conveyer belt 16 carried on the surface of second conveyer belt 16, second sorting board 15's setting can carry out the secondary sorting to tealeaves, and the distance between two adjacent first sorting boards 11 is less than the distance between two adjacent second sorting boards 15.

The working principle is as follows: in use, tea leaves are fed into the first conveying belt 12 in the box body 2 by a worker through the feeding hopper 1, the first motor 6, the second motor 17, the first vibrator 23 and the second vibrator 28 are controlled to work through the controller 5, the tea leaves on the first conveying belt 12 are larger than the distance between the two adjacent first sorting plates 11 and are positioned above the first sorting plates 11 through the vibration of the first vibrator 23, the smaller tea leaves are positioned between the two adjacent first sorting plates 11, the larger tea leaves fall onto the second conveying belt 16 from the second inclined conveying plates 14 through the arrangement of the first separating plates 13, the tea leaves positioned between the two first sorting plates 11 fall onto the first inclined conveying plates 9 and are discharged from the first discharge port 3 through the arrangement of the first separating plates 13, the tea leaves falling on the second conveying belt 16 are classified again through the arrangement of the second sorting plate 15, the larger tea leaves on the second conveying belt 16 fall on the fourth inclined conveying plate 19 and are finally discharged from the third discharge hole 18, and the smaller tea leaves fall on the third inclined conveying plate 10 and are finally discharged from the second discharge hole 4.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vibrating letter sorting equipment for tea processing, includes box (2), first conveyer belt (12) and second conveyer belt (16), its characterized in that: a first conveying belt (12) is obliquely arranged at the upper end of the interior of the box body (2), a second conveying belt (16) is obliquely arranged at the lower end of the interior of the box body (2), the downward oblique end of the first conveying belt (12) and the upward oblique end of the second conveying belt (16) are positioned at the same side of the interior of the box body (2), a first partition plate (13) is arranged at one side of the downward oblique end of the first conveying belt (12), a first oblique conveying plate (9) and a second oblique conveying plate (14) are respectively and fixedly connected to two sides of the lower end of the first partition plate (13), a second partition plate (24) is arranged at one side of the downward oblique end of the second conveying belt (16), a third oblique conveying plate (10) and a fourth oblique conveying plate (19) are respectively and fixedly connected to two sides of the lower end of the second partition plate (24), and first mounting plates (7) are symmetrically arranged at two sides of the first, the bilateral symmetry of second conveyer belt (16) is provided with second mounting panel (29), two through first link (8) fixed connection, two simultaneously on the bottom surface that first mounting panel (7) central point put through second link (30) fixed connection on the bottom surface that second mounting panel (29) central point put, be provided with loading hopper (1) on box (2) top surface directly over first conveyer belt (12) slope, fixed mounting has controller (5) on surface one side of box (2).

2. A vibratory sorting apparatus for tea processing as claimed in claim 1 wherein: the both ends of first conveyer belt (12) inboard are all slided the registrate and are had first roller (21), the fixed registrate of central point of first roller (21) puts first axis of rotation (20), first axis of rotation (20) are rotated through antifriction bearing (37) and are connected on first mounting panel (7), the one end of first axis of rotation (20) of first conveyer belt (12) one side is passed first mounting panel (7) and is extended to the outside of first mounting panel (7) and the output gomphosis of first motor (6), first motor (6) fixed mounting is on the surface of first mounting panel (7), and first motor (6) are through conducting wire and controller (5) electric connection.

3. A vibratory sorting apparatus for tea processing as claimed in claim 1 wherein: the below of first link (8) is aimed at and is provided with first fixed plate (36), and the equal fixed welding in both ends of first fixed plate (36) is on the inner wall of box (2), the top central point of first fixed plate (36) puts fixed mounting has first bobbing machine (23), and the upper end fixed connection of first bobbing machine (23) is on the bottom surface of first link (8), the bilateral symmetry of first bobbing machine (23) is provided with first flexible post (34), the one end fixed connection of first flexible post (34) is on first fixed plate (36), and the other end of first flexible post (34) passes first link (8) simultaneously and extends to the top and first spacing piece (22) fixed connection of first link (8), first bobbing machine (23) are through conductive wire and controller (5) electric connection, the slip registrates on first flexible post (34) of position between first fixed plate (36) and first link (8), first flexible post (34) of first fixed plate (36) and first link (8) position have the first flexible And two ends of the first return spring (35) are respectively and fixedly connected to the first fixing plate (36) and the first connecting frame (8).

4. A vibratory sorting apparatus for tea processing as claimed in claim 1 wherein: the both ends of second conveyer belt (16) inboard all slide the registrate and have second roller (25), the central point of second roller (25) puts fixed registrate and has second axis of rotation (26), second axis of rotation (26) are rotated through antifriction bearing (37) and are connected on second mounting panel (29), the one end of second axis of rotation (26) of second conveyer belt (16) one side is passed second mounting panel (29) and is extended to the outside of second mounting panel (29) and the output gomphosis of second motor (17), second motor (17) fixed mounting is on the surface of second mounting panel (29), and second motor (17) are through conducting wire and controller (5) electric connection.

5. A vibratory sorting apparatus for tea processing as claimed in claim 1 wherein: the below of second link (30) is aimed at and is provided with second fixed plate (33), and the equal fixed welding in both ends of second fixed plate (33) is on the inner wall of box (2), the top central point of second fixed plate (33) puts fixed mounting has second bobbing machine (28), and the upper end fixed connection of second bobbing machine (28) is on the bottom surface of second link (30), the bilateral symmetry of second bobbing machine (28) is provided with the flexible post of second (31), the one end fixed connection of the flexible post of second (31) is on second fixed plate (33), and the other end of the flexible post of second (31) passes second link (30) and extends to the top and the spacing piece of second (27) fixed connection of second link (30) simultaneously, second bobbing machine (28) is through conductive wire and controller (5) electric connection, the flexible post of second (31) of position between second fixed plate (33) and second link (30) has the second fixed plate (33) to slide to overlap on the flexible post of second (31) and have the flexible post (31) of second link (30) and have the second link And two ends of the second return spring (32) are respectively and fixedly connected to the second fixing plate (33) and the second connecting frame (30).

6. A vibratory sorting apparatus for tea processing as claimed in claim 1 wherein: the two sides of the first inclined conveying plate (9), the second inclined conveying plate (14), the third inclined conveying plate (10) and the fourth inclined conveying plate (19) are fixedly welded on the inner wall of the box body (2), a first discharge hole (3) is formed in the upper box body (2) at the inclined lower end of the first inclined conveying plate (9), a second discharge hole (4) is formed in the upper box body (2) at the inclined lower end of the third inclined conveying plate (10), and a third discharge hole (18) is formed in the upper box body (2) at the inclined lower end of the fourth inclined conveying plate (19).

7. A vibratory sorting apparatus for tea processing as claimed in claim 1 wherein: evenly be provided with a plurality of first sorting board (11) along the direction that first conveyer belt (12) carried on the surface of first conveyer belt (12), evenly be provided with a plurality of second sorting board (15) along the direction that second conveyer belt (16) carried on the surface of second conveyer belt (16), and two adjacent distance between first sorting board (11) is less than two adjacent distance between second sorting board (15).