CN214440988U - Seed sorting device - Google Patents

Abstract

The utility model relates to the technical field of seed processing mechanical equipment, and discloses a seed sorting device, which comprises a frame body; the feeding mechanism is arranged above the outer side of the frame body, and a feeding inlet and a feeding outlet are formed in the feeding mechanism and used for feeding seeds; the conveying mechanism is obliquely arranged above the frame body, part of the conveying mechanism extends into the frame body, and the feeding outlet is communicated with the first end of the conveying mechanism and is used for conveying seeds; the sorting mechanism is rotatably arranged below the second end of the transmission mechanism and is used for receiving the seeds which slide into the half space from the transmission mechanism from the parabola tangential direction and detecting and sorting the seeds; control mechanism, with feed mechanism and sorting mechanism control connection, realize the automatic feeding and the automatic separation of seed, solved the problem that current seed sorting facilities sorting efficiency is low, and have simple structure, easily control, advantage that degree of automation is high.

Description

Seed sorting device

Technical Field

The utility model relates to a seed processing mechanical equipment technical field specifically relates to a seed sorting unit.

Background

With the improvement of the technological level and the improvement of mechanical equipment, the production efficiency of each link of agricultural production in China is greatly improved, and the labor intensity of farmers is correspondingly reduced. However, in the aspect of sorting rice seeds, the high-throughput sorting of rice colors can be realized by adopting a color sorter, but the effective judgment of the seed vitality can not be realized according to the appearance and the color of the seeds, the absorption spectrum characteristics of the seeds are collected by a spectrometer, the analysis and the characteristic recognition judgment of the spectrum characteristics are realized by adopting high-speed spectrum processing software, the success rate of seed vitality prediction can be effectively improved, but because the rice seeds have more irregular shapes, the existing rice seed sorting device can not finish accurate and quick sorting in the using process, and still needs to rely on manpower to sort, so that the working efficiency of seed sorting is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that the manual seed sorting process that prior art exists is slow, and is inefficient, the utility model provides a seed sorting device, this seed sorting device have automatic feeding, automated inspection, automatic separation function, can improve seed sorting efficiency.

In order to achieve the above object, the present invention provides a seed sorting device, including:

a frame body;

the feeding mechanism is arranged above the outer side of the frame body and is provided with a feeding inlet and a feeding outlet;

the conveying mechanism is obliquely arranged above the frame body, part of the conveying mechanism extends into the frame body, and the feeding outlet is communicated with the first end of the conveying mechanism;

the sorting mechanism is rotatably arranged below the second end of the conveying mechanism and is used for receiving the seeds falling off from the conveying mechanism and detecting and sorting the seeds; and

and the control mechanism is in control connection with the feeding mechanism and the sorting mechanism, so that automatic feeding and automatic sorting of seeds are realized.

Preferably, the sorting mechanism includes a rotary seed groove section, a transmission detection section, and an ejection section,

the rotary seed groove part is rotatably arranged below the second end of the transmission mechanism and sequentially rotates to pass through the receiving station, the detection station and the sorting station;

the conveying mechanism is arranged to enable the seeds to slide off along the parabolic track at the second end, and the receiving station is located on the parabolic track of the seeds; the transmission detection part is arranged at the detection station; the spraying part is arranged at the sorting station.

Preferably, the rotary seed tank part comprises a roller and a seed tank frame, and the roller is rotatably arranged below the second end of the transmission mechanism; the seed groove frame is detachably arranged on the side wall of the roller, and a plurality of seed grooves for receiving seeds are formed on the seed groove frame.

Preferably, one end of the seed groove forms a closed structure, the other end forms an open structure, and the opening direction of the seed groove faces the second end of the conveying mechanism at the receiving station.

Preferably, the seed groove is formed with a light through hole at the bottom of the end side close to the closed structure, and the light through hole penetrates through the seed groove frame and the side wall of the roller.

Preferably, the cross-sectional shape of the seed groove is trapezoidal.

Preferably, the sorting mechanism further comprises a suction nozzle part connected with the negative pressure equipment, the roller is provided with an annular cavity, the suction nozzle part is arranged in the annular cavity, a negative pressure opening is formed in the suction nozzle part, and the negative pressure opening faces to the light through hole of the receiving station.

Preferably, the transmission detection part comprises an illumination lens and a detection probe which are arranged at the detection station, the illumination lens is arranged at the outer side of the roller, and the detection probe is correspondingly arranged in the annular cavity of the roller.

Preferably, the spraying part comprises a nozzle connected with an air source, the nozzle is arranged in the annular cavity of the roller, and an air outlet is formed on the nozzle and faces to the light through hole at the sorting station.

Preferably, the seed sorting device further comprises a material distribution mechanism, the material distribution mechanism is arranged on one side of the sorting mechanism, a material distribution inlet is formed in the material distribution mechanism, and the material distribution inlet faces the sorting station.

Preferably, the seed sorting device further comprises a material returning mechanism, the material returning mechanism is arranged on one side, close to the receiving station, of the sorting mechanism, a material returning inlet and a material returning outlet are formed in the material returning mechanism, the material returning inlet faces the second end of the transmission mechanism, and the material recovering outlet faces the material feeding inlet of the material feeding mechanism.

Through the technical scheme, feed mechanism realizes the automatic feeding of seed, transport mechanism realizes the automatic transmission of seed, sorting mechanism can realize automated inspection and the automatic separation of seed according to the light transmission principle, effectively discern the seed under the prerequisite of not destroying the seed, be favorable to the seed storage after detecting, the unable accurate quick completion of seed sorting equipment among the prior art is selected separately, the problem that manual separation seed mode is inefficiency has just had simple structure, and the simple operation, advantage that degree of automation is high.

Drawings

FIG. 1 is a schematic view of a seed sorting apparatus;

FIG. 2 is a schematic view of a partial structure of a seed sorting device;

FIG. 3 is a schematic view of the engagement of the transport mechanism and the seed rotating trough;

FIG. 4 is a schematic view (perspective view) of a seed cell rack structure;

FIG. 5 is a front cross-sectional view of the seed tank holder;

FIG. 6 is a schematic view (top view) of a seed cell rack structure;

FIG. 7 is a schematic view (perspective view) of the drum structure;

FIG. 8 is a schematic view (front view) of the drum structure;

FIG. 9 is a schematic view of the drum construction (left side view);

description of the reference numerals

1 feeding mechanism 101 feeding barrel

102 vibration feeder 2 transmission mechanism

201 slide 3 sorting mechanism

301 rotary seed slot part 3011 roller

3012 type slot frame 302 transmission detection part

3021 Lighting lens 3022 inspection probe

303 jet part 304 nozzle part

4 feed mechanism 401 feed cylinder

4011 first trough 4012 second trough

5 feed back mechanism 501 feed back cylinder

502 seed conveyor 6 frame

7 control mechanism

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, right" and "above" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction. The term "inside" and "outside" refers to the side exposed to the user's sight line as "outside" and the side hidden from the user as "inside" with respect to the user's use angle.

The utility model provides a seed sorting unit, this seed sorting unit realize the automated inspection and the automatic separation of seed according to the light transmission principle, can effectively discern, detect and select separately the seed activity under the prerequisite that does not destroy the seed, are favorable to storing the seed after detecting. The seeds in this embodiment are preferably rice seeds, that is, the seed sorting device in this embodiment is used for automatically detecting and sorting rice seeds. As shown in fig. 1 to 3, the seed sorting device in this embodiment includes a frame 6, a feeding mechanism 1, a conveying mechanism 2, a sorting mechanism 3, and a control mechanism 7, wherein the feeding mechanism 1 is disposed above the outer side of the frame 6, and a feeding inlet and a feeding outlet are formed on the feeding mechanism 1 for feeding seeds; the conveying mechanism 2 is obliquely arranged above the frame body 6, part of the conveying mechanism 2 extends into the frame body 6, and the feeding outlet is communicated with the first end of the conveying mechanism 2 and is used for conveying seeds; the sorting mechanism 3 is rotatably arranged below the second end of the transmission mechanism 2 and is used for receiving the seeds which slide into the midair from the transmission mechanism 2 and detecting and sorting the seeds; the control mechanism 7 is in control connection with the feeding mechanism 1 and the sorting mechanism 3, and automatic feeding and automatic sorting of seeds are achieved.

The sorting mechanism 3 comprises a rotary seed tank part 301, a transmission detection part 302 and a spraying part 303, wherein the rotary seed tank part 301 is rotatably arranged below the second end of the transmission mechanism 2 and sequentially passes through a receiving station, a detection station and a sorting station, wherein the transmission mechanism 2 is arranged to enable seeds to slide down along a parabolic track at the second end, and the receiving station is positioned on the parabolic track of the seeds; the transmission detection part 302 is arranged at a detection station and is used for detecting the activity of the seeds through light transmission; the spraying part 303 is arranged at the sorting station and used for sorting the seeds according to the seed activity detection result.

In the embodiment of the utility model, the feeding mechanism 1 comprises a feeding barrel 101, a feeding support frame, a discharging adjusting plate and a vibrating feeder 102, wherein the feeding support frame is arranged above the outer side of the frame body 6; the feeding barrel 101 is arranged above the feeding support frames, and between the two feeding support frames, a feeding inlet and a feeding outlet are respectively formed at the top and the bottom of the feeding barrel 101; the discharging adjusting plate is arranged at the feeding outlet and can form switch matching with the feeding outlet, and a user can enable the discharging adjusting plate to completely block the feeding outlet before starting the seed sorting device, so that seeds to be sorted can be poured into the feeding barrel 101 conveniently; adjust ejection of compact regulating plate and open suitable opening size with the material loading export in seed sorting unit's use, make the seed can flow with even, suitable speed, avoid the too big seed that leads to of seed outflow speed to pile up in material loading export below, also avoid the seed outflow speed undersize to lead to the seed to select separately the speed and reduce. The vibration loading device 102 comprises a vibration part and a vibration transmission groove, the vibration part is arranged above the outer side of the frame body 6, the vibration transmission groove is arranged above the vibration part, the first end of the vibration transmission groove is arranged below the feeding outlet, the second end of the vibration transmission groove is communicated with the upper part of the transmission mechanism 2, namely, seeds fall to the first end of the vibration transmission groove from the feeding outlet, the seeds move forwards under the vibration action of the vibration part, the seeds are transmitted from the first end to the second end of the vibration transmission groove, and the seeds are transmitted to the first end of the transmission mechanism 2 after reaching the second end of the vibration transmission groove. In this embodiment, the feeding mechanism 1 realizes automatic feeding of seeds by matching the discharging adjusting plate with the vibrating feeder 102, and improves convenience of seed feeding.

The embodiment of the utility model provides an in, transport mechanism 2 includes slide 201, and the relative 6 downward sloping settings of framework in slide 201, and the first end of slide 201 with expose in the vibration transmission groove second end intercommunication in the framework 6 outside, the second end of slide 201 stretches into framework 6 inside and be in the suspension state, and is further, is formed with the linear type spout of a plurality of parallels on the slide 201 for the seed is more regular, orderly when the landing downwards.

In the embodiment of the present invention, the rotary seed tank 301 comprises a roller 3011 and a seed tank rack 3012, the roller 3011 is rotatably disposed below the second end of the transmission mechanism 2; a seed slot frame 3012 is detachably provided on a side wall of the drum 3011, and a plurality of seed slots for receiving seeds are formed on the seed slot frame 3012. Specifically, the rotary seed tank 301 further comprises a roller support frame, the roller support frame is arranged on the bottom surface of the frame 6, and the roller 3011 is arranged above the roller support frame and can rotate relative to the roller support frame; the seed groove frames 3012 are uniformly distributed along the circumferential direction of the roller 3011, a plurality of seed grooves are formed on the seed groove frames 3012, the seed grooves correspond to the linear sliding grooves on the sliding rail 201 one by one, the possibility that the sorting mechanism 3 receives seeds is improved, the seeds slide on the sliding rail 201 and then move in a parabola shape in the air, and the seeds fall into the seed grooves on the seed groove frames 3012 when the seed groove frames 3012 rotate in the tangent direction of the parabola shape. In this embodiment, the bottom of the seed tank rack 3012 is a T-shaped structure, and correspondingly, a plurality of T-shaped grooves distributed along the axial direction are formed on the outer wall of the drum 3011, as shown in fig. 7 to 9, a user can also detach and replace the seed tank rack 3012 with different types of seed tanks according to actual needs, thereby enhancing the functionality of the seed sorting device.

The embodiment of the utility model provides an in, as shown in fig. 4-6, kind of groove one end forms enclosed construction, and the other end forms open structure receive the station, the open structure in kind of groove is towards the second end of transmission device 2 for when kind of groove frame 3012 is in the parabola tangential direction of seed whereabouts, kind of groove can communicate with the spout of slide 201, and the seed falls into kind of groove from the open structure department in kind of groove, and stops in kind of inslot under enclosed construction's the effect that stops, is convenient for sort on next step. The embodiment of the utility model provides an in, the cross sectional shape of kind of groove is trapezoidal, and is concrete, and the base in kind of groove cross-section is trapezoidal minor face, and the topside in kind of groove cross-section is trapezoidal long limit, and this kind of groove structural shape makes the seed easily fall into kind of tank bottoms portion. Further, the size in kind of groove can only hold a seed for the seed gets the position determination of kind of groove bottom left and right sides, reduces the seed and rocks the possibility at will when planting the groove frame 3012 and rotating, promotes the degree of accuracy that the seed was selected separately.

In the embodiment of the utility model, the seed groove is formed with logical unthreaded hole in the distolateral bottom that is close to enclosed construction, and leads to the unthreaded hole and run through the lateral wall of seed groove frame 3012 and cylinder 3011. Further, the diameter range of the light through hole in the embodiment is 0.5mm-2mm, and the diameter range of the light through hole can prevent the seeds from falling off from the light through hole.

The embodiment of the utility model provides an in, sorting mechanism 3 still includes the suction nozzle portion 304 of being connected with negative pressure equipment, and cylinder 3011 is formed with the annular chamber, and suction nozzle portion 304 is established in the annular chamber, and is formed with the negative pressure opening on the suction nozzle portion 304, and the negative pressure opening is towards the logical unthreaded hole of receiving the station, and in addition, suction nozzle portion 304 is static relative cylinder 3011. The suction nozzle part 304 generates negative pressure at the negative pressure opening and sucks the seeds through the light through hole, so that the seeds which slide from the sliding groove and are parabolic can be sucked and captured in the seed groove, and the probability that the seeds fall into the seed groove is improved.

In the embodiment of the present invention, the transmission detection portion 302 includes an illumination lens 3021 and a detection probe 3022 which are disposed at the detection station, and the illumination lens 3021 is disposed outside the roller 3011, the detection probe 3022 is correspondingly disposed in the annular cavity of the roller 3011, and both the illumination lens 3021 and the detection probe 3022 are stationary with respect to the roller 3011. In the embodiment of the present invention, the transmission detection portion 302 further includes a spectrometer, and the spectrometer is electrically connected to the detecting probe 3022. When the roller 3011 drives the seed tank 3012 to rotate to the detection station, the illumination lens 3021 can emit a super-continuous light source to irradiate on the seed at the detection station, and the light transmitted by the seed is received by the detection probe 3022 and transmitted to the spectrometer for spectroscopic detection, so as to obtain a spectroscopic signal. Furthermore, the spectral range of the super-continuous light source in the embodiment of the present invention is 400nm to 2400 nm; the detection probe 3022 is a fiber probe, which uses a multimode fiber with a core diameter ranging from 20um to 1000 um; the spectrometer detects the transmission spectrum of the rice seeds by adopting a grating light splitting or Fourier transform light splitting mode, the spectral range covers 900nm-2200nm, and the spectral resolution is less than 10 nm.

The embodiment of the utility model provides an in, injection portion 303 includes the nozzle of being connected with the air supply, and the nozzle is established in the annular chamber of cylinder 3011, and is formed with the air jet on the nozzle, and the air jet is further towards the logical unthreaded hole of selecting separately station department, and the air supply in this embodiment is compressed air source, and spun air current has enough powerful impact force, and kind cell rack 3012 is when selecting separately the station, and the seed can be impacted by nozzle air jet spun air current and break away from kind of groove and fall into the realization in feed mechanism 4 and be selected separately.

The embodiment of the utility model provides an in, seed sorting unit feed mechanism 4, feed mechanism 4 establish in one side of sorting mechanism 3, and are formed with the branch material entry on the feed mechanism 3, divide the material entry orientation to select separately the station. The material distributing mechanism 4 comprises a material distributing barrel 401, and a first material groove 4011 and a second material groove 4012 which are adjacent to each other are formed on the material distributing barrel 401, wherein the first material groove 4011 is arranged on one side close to the seed groove frame 3012, and the second material groove 4012 is arranged on one side far away from the roller 3011. After the seeds are detected by the transmission detection part 302, the seeds meeting the preset sorting requirement on the seed trough frame 3012 fall under the impact of the air flow ejected by the nozzle and are sorted in the second trough 4012, and the seeds not meeting the preset sorting requirement fall into the first trough 4011 along with the rotation of the seed trough frame 3012.

The embodiment of the utility model provides an in, feed back mechanism 5 establishes in one side that sorting mechanism 4 is close to the receiving station, is formed with feed back entry and feed back export on the feed back mechanism 5, and the feed back entry is held towards 2 second of transmission device, retrieves the material loading entry of export towards feed mechanism 1. The feed back mechanism 5 includes feed back cylinder 501 and seed conveyer 502, feed back cylinder 501 top is formed with the seed and retrieves the entry, the bottom of feed back cylinder 501 and the first end intercommunication of seed conveyer 502, the second end of seed conveyer 502 is formed with the seed and retrieves the export, seed conveyer 502 is by framework 6 inside upwards, outwards extend go to make the seed retrieve the export towards the feed inlet of feed mechanism 1, make from slide 201 in the landing and not get into the seed in kind of groove can fall into feed back cylinder 501, and realize the recovery of seed in the feed mechanism 1 through the transport of seed conveyer 502 transport again, the degree of automation of seed recovery has been promoted, the manual labor cost has been alleviateed.

In the embodiment of the utility model, the control mechanism 7 comprises a control host which is connected with the feeding mechanism 1 and the sorting mechanism 3 in a control way, and can control the discharging adjusting plate in the feeding mechanism 1 to open and close to realize the automatic feeding of seeds; and the transmission detection information (namely, spectrum signals) obtained after the seeds are transmitted can be analyzed and judged, and the air flow ejected by the nozzles of the ejection part 303 in the sorting mechanism 3 to the seeds meeting the preset sorting requirement can be controlled according to the analysis and judgment results to enable the seeds to fall into the second material groove 4012 for sorting.

The utility model provides a seed sorting unit places the seed in material loading box 101 back at the user, and seed sorting unit implements following operating procedure automatically:

s1: the feeding mechanism 1 controls the seeds to automatically flow out from a feeding outlet;

s2: the sorting mechanism 4 acquires transmission detection information of the seeds;

s3: the sorting mechanism 4 judges whether the seed transmission detection information meets the preset sorting requirement, and if so, the seeds are sprayed into the material distribution mechanism 4 to realize sorting.

Specifically, after a user places seeds in the feeding box 101 and starts the seed sorting device, the control mechanism 7 controls the discharging adjustment plate to be opened to a proper angle so that the seeds in the feeding box 101 fall onto the vibrating feeder 102 at a proper angle and speed, the seeds move from the first end to the second end of the vibrating transmission groove regularly under the action of the vibrating feeder 102, then are conveyed from the second end of the vibrating transmission groove to the first end of the transmission mechanism 2, slide from the first end of the transmission mechanism 2 to the second end of the transmission mechanism 2 under the action of gravity and do parabolic motion, when the roller 3011 drives the seed rack 3012 to pass through the tangential direction of the parabola, the negative pressure opening of the suction nozzle part 304 generates negative pressure to further attract the seeds doing parabolic motion to the seed groove of the seed rack 3012, the seed rack 3012 continues to rotate to convey the seeds to the seed detection station after receiving the seeds, the transmission lens of the detection station irradiates the seeds with a transmission light source, the detection lens receives the optical signal transmitted by the seeds and sends the optical signal to the spectrometer for analysis, the spectrometer sends the analysis result to the control mechanism 7, the control mechanism 7 controls the nozzle to spray air flow to sort out the seeds according to the analysis result, namely if the analysis result of the spectrometer shows that the transmitted seeds meet the preset vigor condition, the control mechanism 7 controls the nozzle to spray air flow to impact the seeds into the second trough 4012; if the spectrometer analysis result shows that the transmitted seeds do not meet the preset activity condition, the control mechanism 7 does not enable the nozzles to spray air flow, the seeds in the seed grooves fall into the first material grooves 4011 due to gravity along with the continuous rotation of the seed groove frame 3012, and through the process, the seed sorting device sorts out the seeds with different activities according to the light transmission principle.

To sum up, the utility model provides a seed sorting unit adopts feed mechanism, transport mechanism, sorting mechanism, feed mechanism, recovery mechanism and control mechanism to mutually support, realizes automatic feeding, automatic transmission, automated inspection, automatic separation and the automatic recovery of seed, has solved the low problem of current seed sorting equipment sorting efficiency, and has simple structure, easily control, advantage that degree of automation is high.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (11)

1. A seed sorting apparatus, comprising:

a frame body;

the feeding mechanism is arranged above the outer side of the frame body and is provided with a feeding inlet and a feeding outlet;

the conveying mechanism is obliquely arranged above the frame body, the conveying mechanism partially extends into the frame body, and the feeding outlet is communicated with the first end of the conveying mechanism;

the sorting mechanism is rotatably arranged below the second end of the conveying mechanism and is used for receiving the seeds falling off from the conveying mechanism and detecting and sorting the seeds; and

and the control mechanism is in control connection with the feeding mechanism and the sorting mechanism to realize automatic feeding and automatic sorting of seeds.

2. The seed sorting apparatus of claim 1, wherein the sorting mechanism includes a rotating seed bowl portion, a transmission detection portion, and a spray portion, the rotating seed bowl portion rotatably disposed below the second end of the transport mechanism and sequentially rotating through a receiving station, a detection station, and a sorting station;

the conveying mechanism is arranged to enable the seeds to slide off along a parabolic track at the second end, and the receiving station is located on the parabolic track of the seeds; the transmission detection part is arranged at the detection station; the ejection portion is provided at the sorting station.

3. The seed sorting apparatus of claim 2, wherein the rotating seed trough portion comprises a drum and a seed trough rack, the drum being rotatably disposed below the second end of the transport mechanism; the seed groove frame is detachably arranged on the side wall of the roller, and a plurality of seed grooves for receiving seeds are formed in the seed groove frame.

4. The seed sorting apparatus of claim 3, wherein the seed slot forms a closed configuration at one end and an open configuration at the other end, the seed slot opening toward the second end of the transport mechanism at the receiving station.

5. The seed sorting device of claim 4, wherein the seed tank is formed with a light through hole at a bottom of an end side near the closed structure, the light through hole penetrating the seed tank frame and the drum sidewall.

6. The seed sorting apparatus of claim 5, wherein the cross-sectional shape of the seed groove is trapezoidal.

7. The seed sorting apparatus of claim 5 or 6, wherein the sorting mechanism further comprises a suction nozzle portion connected to a negative pressure device, the drum forms an annular chamber, the suction nozzle portion is provided in the annular chamber, and a negative pressure opening is formed on the suction nozzle portion, the negative pressure opening facing the light through hole of the receiving station.

8. The seed sorting apparatus of claim 7, wherein the transmission detection portion comprises an illumination lens and a detection probe provided at the detection station, the illumination lens is provided outside the drum, and the detection probe is correspondingly provided in the annular cavity of the drum.

9. The seed sorting apparatus of claim 8, wherein the ejection section includes a nozzle connected to an air supply, the nozzle being disposed in the annular cavity of the drum, the nozzle having an air jet port formed thereon, the air jet port facing the clear aperture at the sorting station.

10. The seed sorting device of claim 9, further comprising a material distribution mechanism disposed at one side of the sorting mechanism, wherein the material distribution mechanism is formed with a material distribution inlet facing the sorting station.

11. The seed sorting device of claim 10, further comprising a material return mechanism disposed on a side of the sorting mechanism adjacent to the receiving station, wherein the material return mechanism has a material return inlet and a material return outlet formed thereon, the material return inlet faces the second end of the conveying mechanism, and the material return outlet faces the feeding inlet of the feeding mechanism.

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