Multi-stage citrus automatic optimal selection device

Abstract

The invention provides a multistage citrus automatic optimal selection device which comprises a primary screening device and a secondary screening device, the primary screening device comprises a feeding hopper and a spiral material distribution frame, the secondary screening device comprises a stopping device, and the stopping device and the spiral material distribution frame are connected through a material receiving box and an articulated chute. A chute is formed in the end, away from the spiral material distributing frame, of the stopping device, a material guiding channel is formed in the lower end of the hopper, the spiral material distributing frame with the screw pitch gradually increased in the length direction is arranged at the discharging end of the material guiding channel, and the problem of multi-stage screening of superior citrus products is solved.

Description

Technical Field

[0001] The invention relates to the field of citrus grade classification, and in particular to a multi-grade citrus automatic selection device. Background Art

[0002] Traditional citrus sorting methods usually rely on manual sorting, which has the challenges of uneven sorting, low efficiency and high cost. Therefore, nowadays, mechanized automatic screening machines are usually used to complete the classification of citrus of different sizes. The common structure can be found in CN 115245906 B. An intelligent fruit size screening and packaging system and screening and packaging method, by passing nearly round fruits such as citrus through a cylindrical structure with hollow structures of different sizes, so that the citrus falls from the hollow structures of different sizes, achieving a screening effect.

[0003] However, similar to the above structure, due to the fast sliding speed of citrus fruits, when citrus fruits collide with each other, it is easy to skip over a hollow structure, resulting in some fish slipping through the net, making the screening inaccurate. In addition, this screening mechanism can only screen the size once, and cannot screen the sweetness of citrus fruits and other parameters that improve the quality, and the screening ability is relatively single. Summary of the invention

[0004] The invention provides a multi-stage citrus automatic selection device, which solves the problem of multi-stage screening of high-quality citrus.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multi-stage citrus automatic selection device, including a primary screening device and a secondary screening device, the primary screening device includes a feed hopper and a spiral material distribution frame, the secondary screening device includes a stop device, the stop device and the spiral material distribution frame are connected by a material receiving box and a chute, and a chute is provided at one end of the stop device away from the spiral material distribution frame.

[0006] In the preferred scheme, a material guide channel is provided at the lower end of the feed hopper, and a spiral material distributor with a gradually increasing pitch along the length direction is provided at the discharge end of the material guide channel. The spiral material distributor is rotatable, and a material receiving box is provided below the spiral material distributor. The material receiving box is provided with multiple material receiving troughs along the length direction of the spiral material distributor, and a discharge port is provided on one side of each material receiving trough. The material guide channel and the spiral material distributor are arranged inclined.

[0007] The preferred scheme also includes a first supporting leg and a third supporting leg. The first supporting leg is provided with a first lifting rod that can move up and down, and the upper end of the first lifting rod is hinged to the feed hopper. The third supporting leg is provided with a third lifting rod that can move up and down, and the third lifting rod is provided with a hinged second transverse platform. The second transverse platform is rotatably connected to one end of the spiral material distribution frame.

[0008] In a preferred solution, a cross support frame is provided on one side of the first lifting rod close to the material guide channel, the cross support frame is provided below the material guide channel, a laterally movable magnetic block is provided between the material guide channel and the cross support frame, and the magnetic block adsorbs the material guide channel and the cross support frame.

[0009] In the preferred scheme, the second transverse movement platform includes a second L-shaped frame, on which a second guide rail slider device and a second transverse movement plate are provided, one end of the spiral material distribution frame is provided with a rotating shaft portion, the rotating shaft portion is rotatably connected to the second transverse movement plate, a supporting block is provided at the front end of the cross support frame, and the other end of the spiral material distribution frame is provided with a ring portion, which rests on the resting block for rotation, a second push rod with a threaded connection is provided on the second L-shaped frame, one end of the second push rod rests on the second transverse movement plate, the lower end of the second L-shaped frame is hinged to the third lifting rod, and one side of the third lifting rod is also provided with an outwardly extending transverse plate, on which a third push rod with a threaded connection is provided, and the upper end of the third push rod rests on the lower end of the second L-shaped frame.

[0010] In the preferred solution, the second supporting leg is provided with a second lifting rod which can move up and down, and a first transverse platform is provided at the upper end of the second lifting rod. The first transverse platform includes a first L-shaped frame, and a first transverse plate is provided on the first L-shaped frame. The first transverse plate supports the material receiving box, and a first guide rail slider device is provided between the first transverse plate and the first L-shaped frame. The first L-shaped frame is also provided with a first push rod, and one end of the first push rod rests on the first transverse plate.

[0011] In the preferred solution, each receiving trough is provided with an arc-shaped guide plate that can move up and down, the lower end of each arc-shaped guide plate faces each discharge port, and a compression spring is provided between the bottom end of the receiving box and the lower end of the arc-shaped guide plate.

[0012] In the preferred solution, a fourth guide rail slider device and a partition plate connected to the fourth guide rail slider device are provided at the bottom end of the material receiving box, the partition plate divides the interior of the material receiving box into multiple material receiving grooves, the side wall of the material receiving box is provided with a strip through groove, and a locking screw is also provided, the locking screw passes through the strip through groove to be threadedly connected to one end of the partition plate.

[0013] In a preferred solution, each material outlet is provided with a sleeve structure, a guide bell mouth structure is provided inside the sleeve structure near the material receiving box, and a flange structure connected by threads is provided at the outer end of the sleeve structure.

[0014] In the preferred embodiment, the stopping device includes a base, two side baffles arranged in parallel and at intervals are provided on the base, a channel is provided between the side baffles, the outlet of the chute is aligned with one end of the channel, a stopping plate is provided at the channel, a lower recess is provided at the lower end of the channel, a through groove is provided on the side baffle, a quality detector facing the channel is provided at the through groove, and the other end of the channel is aligned with the chute.

[0015] In the preferred solution, a rotatable rotating sleeve is provided at the upper end of the side baffle plate, there are multiple stop plates, and they are evenly distributed along the circumference of the rotating sleeve, a turntable device is provided below the stop device, the turntable device is provided with a rotatable rotating disk, the rotating disk is connected to the base, and multiple chutes are arranged along the circumference of the rotating disk shaft, and the rotating disk rotates so that the clamp can be selectively aligned with each chute.

[0016] The beneficial effects of the present invention are as follows: it is equipped with two screening mechanisms, and the internal qualities of citrus such as size and sweetness can be comprehensively screened in one feeding operation, without repeated feeding, thus reducing labor intensity and equipment cost; a spiral groove structure is adopted to replace the chute structure, and the citrus needs to queue up in the spiral groove in turn to pass through, thereby reducing the rolling speed of the citrus and preventing the phenomenon of missed screening; the spiral material distribution frame realizes stepless screening of the size of citrus by setting a gradually increasing pitch, and the classification level can be increased by only increasing the density of the receiving trough in the receiving box, which is suitable for more refined screening; the slope of the guide channel and the spiral material distribution frame can be adjusted to adapt to citrus of different shapes, and the downward movement speed can be adjusted to prevent the occurrence of excessive speed or jamming; a buffer-type arc guide plate is adopted to catch the screened citrus, thereby reducing the impact force and avoiding damage to the citrus; the stop device adopts a rotating blade structure, which integrates the functions of stopping and shifting citrus, has a delicate structure, and can rotate horizontally with the rotating disk to quickly push the citrus to the corresponding chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall elevation of the organization.

[0019] Figure 2 It is a schematic diagram of the elevation layout of the citrus size screening mechanism.

[0020] Figure 3 It is a schematic diagram of the first side of the material receiving box structure.

[0021] Figure 4 It is a schematic diagram of the second side of the material receiving box structure.

[0022] Figure 5 This is a top view of the material receiving box and chute layout.

[0023] Figure 6 It is a schematic diagram of the bottom structure of the receiving box.

[0024] Figure 7 It is a cross-sectional view of the receiving trough.

[0025] Figure 8 This is a schematic diagram of the second transverse platform.

[0026] Fig. 9 This is a schematic diagram of the first transverse platform.

[0027] Fig.10 It is a structural diagram of the stop device.

[0028] Fig.11 It is the chute layout diagram.

[0029] Fig.12 This is the optical path structure diagram of H001F.

[0030] In the figure: feed hopper 1; guide channel 101; spiral material distribution frame 2; rotating shaft 201; first driving motor 202; receiving box 3; receiving trough 301; discharging port 302; third rail slider device 303; arc guide plate 304; compression spring 305; partition plate 306; fourth rail slider device 307; strip through groove 308; locking screw 309; column head 310; guide bell mouth structure 311; sleeve structure 312; flange edge structure 313; slide pipe 4; first support leg 5; first lifting rod 501; cross support frame 502; magnetic suction block 503; abutment block 504; second support leg 6; second lifting rod 601; first transverse platform 602; The first L-shaped frame 603; the first transverse plate 604; the first guide rail slider device 605; the first push rod 606; the third support leg 7; the third lifting rod 701; the second transverse platform 702; the second L-shaped frame 703; the second transverse plate 704; the second guide rail slider device 705; the extended transverse plate 706; the second push rod 707; the third push rod 708; the transverse pin 709; the stop device 8; the base 801; the side baffle plate 802; the channel 803; the recessed portion 804; the through groove 805; the bearing seat 806; the rotating sleeve 807; the stop plate 808; the second drive motor 809; the chute 9; the turntable device 10; the rotating disk 1001; the quality detector 11. DETAILED DESCRIPTION

[0031] Embodiment 1: like Figure 1-11 A multi-stage citrus automatic selection device includes a primary screening device and a secondary screening device. The primary screening device includes a feed hopper 1 and a spiral material distribution frame 2. The secondary screening device includes a stop device 8. The stop device 8 and the spiral material distribution frame 2 are connected through a material receiving box 3 and a chute 4. A chute 9 is provided at one end of the stop device 8 away from the spiral material distribution frame 2.

[0032] The primary screening device is mainly used to screen the size of the citrus fruits. After the screening is completed, the larger citrus fruits are passed through the chute 4 conveyor track stop device 8 for sweetness and other tests for secondary classification.

[0033] In the preferred scheme, a material guide channel 101 is provided at the lower end of the feed hopper 1, and a spiral material distributor 2 with a gradually increasing pitch along the length direction is provided at the discharge end of the material guide channel 101. The spiral material distributor 2 is rotatable, and a material receiving box 3 is provided below the spiral material distributor 2. The material receiving box 3 is provided with a plurality of material receiving grooves 301 along the length direction of the spiral material distributor 2, and a discharge port 302 is provided on one side of each material receiving groove 301. The material guide channel 101 and the spiral material distributor 2 are arranged at an angle.

[0034] The lower end of the material guide channel 101 extends into the spiral material distribution frame 2. The material guide channel 101 and the spiral material distribution frame 2 are arranged obliquely to utilize the dead weight of the citrus fruits, reduce slippage, and prevent material jamming.

[0035] The spiral material distribution frame 2 is a spiral structure similar to a spring, the pitch of which gradually increases from one end to the other end, and the feed end is a small pitch end.

[0036] The preferred scheme also includes a first supporting leg 5 and a third supporting leg 7. The first supporting leg 5 is provided with a first lifting rod 501 that can move up and down, and the upper end of the first lifting rod 501 is hinged to the feed hopper 1. The third supporting leg 7 is provided with a third lifting rod 701 that can move up and down, and the third lifting rod 701 is provided with a hinged second transverse platform 702, and the second transverse platform 702 is rotatably connected to one end of the spiral material distribution frame 2.

[0037] The inclination angles of the guide channel 101 and the spiral distribution frame 2 can be adjusted to change the rolling rate of the citrus on the guide channel 101. By adjusting the rotation rate of the spiral distribution frame 2 around its axis, the downward movement rate of the citrus on the pitch channel of the spiral distribution frame 2 can be adjusted.

[0038] In the preferred solution, a cross support frame 502 is provided on the side of the first lifting rod 501 close to the material guide channel 101, and the cross support frame 502 is arranged below the material guide channel 101. A laterally movable magnetic block 503 is provided between the material guide channel 101 and the cross support frame 502, and the magnetic block 503 adsorbs the material guide channel 101 and the cross support frame 502.

[0039] The guide channel 101 and the cross support frame 502 can be made of steel. The lateral position adjustment of the magnetic block 503 can change the maximum swing angle of the guide channel 101 relative to the cross support frame 502, thereby playing the role of angle limiting and supporting.

[0040] In the preferred embodiment, the second transverse moving platform 702 includes a second L-shaped frame 703, on which a second guide rail slider device 705 and a second transverse moving plate 704 are provided, a rotating shaft portion 201 is provided at one end of the spiral material distribution frame 2, and the rotating shaft portion 201 is rotatably connected to the second transverse moving plate 704, a supporting block 504 is provided at the front end of the cross support frame 502, and a ring portion is provided at the other end of the spiral material distribution frame 2, and the ring portion rests on the resting block 504 for rotation, a second threaded second push rod 707 is provided on the second L-shaped frame 703, and one end of the second push rod 707 rests on the second transverse moving plate 704, the lower end of the second L-shaped frame 703 is hinged to the third lifting rod 701, and one side of the third lifting rod 701 is also provided with an extended transverse plate 706, and the extended transverse plate 706 is provided with a threaded third push rod 708, and the upper end of the third push rod 708 rests on the lower end of the second L-shaped frame 703.

[0041] The abutment block 504 is made of wear-resistant material and contacts the outer wall of the annular portion of the spiral material distributor 2, so that both ends of the spiral material distributor 2 form double-point supports to prevent the spiral material distributor 2 from shaking and causing the far end to swing when rotating.

[0042] The front end of the second push rod 707 is provided with a thin diameter portion, which is inserted into a groove with a push screw reserved at the end of the second transverse plate 704.

[0043] The second transverse plate 704 is provided with a first driving motor 202 , the shaft end of the first driving motor 202 is connected to the rotating shaft portion 201 via a coupling, and the first driving motor 202 is a reduction motor.

[0044] The citrus fruits are fed from the upper end of the feed hopper 1 and transported to the inner frame of the spiral distributor 2 by the inclined guide channel 101 through the side wall break. Since the pitch of the front end is small, only the citrus fruits with smaller diameters are allowed to fall through and fall into the receiving trough 301 below. As the spiral distributor 2 rotates, the larger citrus fruits are transmitted by the spiral structure to the segment with larger pitch, and finally fall into different receiving troughs 301 one by one according to the diameter size, completing the screening.

[0045] If the screening rhythm is increased, or the citrus fruits are flat and not easy to roll down, it is necessary to raise the first lifting rod 501, lower the third lifting rod 701, adjust the position of the magnetic block 503 to increase the inclination of the guide channel 101, and adjust the inclination angle of the second L-shaped frame 703 accordingly. The lower end of the third push rod 708 also needs to be pushed out to support the front end; and according to the new distance from the second L-shaped frame 703 to the abutment block 504, adjust the amount of rotation of the second push rod 707, and use the push screw to tighten the thin diameter part; finally, the push screws of the hinged part of the second L-shaped frame 703 and the hinged part of the lower end of the feed hopper 1 are tightened to the rotating shaft to complete the locking.

[0046] In the preferred embodiment, the second supporting leg 6 is provided with a second lifting rod 601 which can move up and down, and a first transverse platform 602 is provided at the upper end of the second lifting rod 601. The first transverse platform 602 includes a first L-shaped frame 603, and a first transverse plate 604 is provided on the first L-shaped frame 603. The first transverse plate 604 supports the material receiving box 3. A first guide rail slider device 605 is provided between the first transverse plate 604 and the first L-shaped frame 603. A first push rod 606 is also provided on the first L-shaped frame 603, and one end of the first push rod 606 rests on the first transverse plate 604.

[0047] The structure of the first transverse platform 602 is similar to that of the second transverse platform 702 . The end of the first push rod 606 is also provided with a rotatable thin-diameter portion that is inserted into the end of the first transverse plate 604 and is locked by a push screw.

[0048] The first transverse moving platform 602 does not rotate relative to the second lifting rod 601 .

[0049] The size grade of citrus fruits is screened based on the same variety. Since different varieties of citrus fruits have different overall sizes, for large-diameter varieties, the receiving box 3 needs to be adjusted to the side of the spiral distributor 2 with a larger pitch, while for small-diameter varieties, the receiving box 3 needs to be adjusted as a whole to the side of the spiral distributor 2 with a smaller pitch.

[0050] In the preferred embodiment, each receiving trough 301 is provided with an arc guide plate 304 that can move up and down, and the lower end of each arc guide plate 304 faces each discharge port 302 . A compression spring 305 is provided between the bottom end of the receiving box 3 and the lower end of the arc guide plate 304 .

[0051] A third rail slider device 303 is provided on the side wall of the arc-shaped guide plate 304 , and the third rail slider device 303 is connected to the side wall of the arc-shaped guide plate 304 , so that the arc-shaped guide plate 304 can move up and down.

[0052] The bottom end of the arc guide plate 304 and the bottom end of the inner part of the receiving box 3 are provided with a column head 310, and both ends of the compression spring 305 are stuck in the column head 310 to prevent it from falling out.

[0053] After the citrus falls into the receiving chute 301, the arc guide plate 304 is pressed down, and the arc guide plate 304 presses down the compression spring 305 to reduce the impact force on the citrus to avoid damaging the citrus. At the same time, the citrus rolls down along the arc guide plate 304 and enters the slide pipe 4 from the side discharge port 302. The slide pipe 4 is arranged obliquely, and the citrus rolls to the next station. After the citrus rolls off the arc guide plate 304, the arc guide plate 304 returns to its original height.

[0054] In the preferred embodiment, a fourth guide rail slider device 307 and a partition plate 306 connected to the fourth guide rail slider device 307 are provided at the bottom end of the material receiving box 3. The partition plate 306 divides the interior of the material receiving box 3 into a plurality of material receiving grooves 301. The side wall of the material receiving box 3 is provided with a strip through groove 308 and a locking screw 309. The locking screw 309 passes through the strip through groove 308 to be threadedly connected to one end of the partition plate 306.

[0055] The position of the partition plate 306 can be moved horizontally according to different varieties to change the space size of each receiving trough 301, and finally the locking screw 309 is tightened to fix the position of the partition plate 306.

[0056] In a preferred solution, each discharge port 302 is provided with a sleeve structure 312 , a guide bell mouth structure 311 is provided inside the sleeve structure 312 near the receiving box 3 , and a flange edge structure 313 connected by threads is provided at the outer end of the sleeve structure 312 .

[0057] The guiding bell mouth structure 311 faces the lower end of the arc-shaped guide plate 304 .

[0058] The sleeve structure 312 is inserted into the discharge port 302 from the inside of the receiving box 3 and then locked from the outside by a large nut.

[0059] It can be connected to the flange of the slide pipe 4 through the sleeve structure 312.

[0060] The lifting structures of the first supporting leg 5, the second supporting leg 6 and the third supporting leg 7 are the same. The first lifting rod 501, the second lifting rod 601 and the third lifting rod 701 are provided with multiple sockets along the height direction. The base feet of the first supporting leg 5, the second supporting leg 6 and the third supporting leg 7 are provided with through holes and horizontal pins 709. After changing the height of the lifting rod, the sockets at the new height are aligned with the through holes, the horizontal pins 709 are inserted, and the nuts at the ends are tightened.

[0061] In the preferred embodiment, the stopping device 8 includes a base 801, on which are provided two side baffles 802 arranged in parallel and spaced apart, a channel 803 is provided between the side baffles 802, the outlet of the chute 4 is aligned with one end of the channel 803, a stopping plate 808 is provided at the channel 803, a lower recess 804 is provided at the lower end of the channel 803, a through groove 805 is provided on the side baffle 802, a quality detector 11 is provided at the through groove 805 facing the channel 803, and the other end of the channel 803 is aligned with the chute 9.

[0062] In the preferred embodiment, a rotatable rotating sleeve 807 is provided at the upper end of the side baffle 802, and there are multiple stop plates 808 that are evenly distributed along the circumference of the rotating sleeve 807. A turntable device 10 is provided below the stop device 8, and the turntable device 10 is provided with a rotatable rotating disk 1001. The rotating disk 1001 is connected to the base 801, and multiple chutes 9 are arranged along the circumference of the rotating axis of the rotating disk 1001. The rotating disk 1001 rotates so that the clamp 803 can be selectively aligned with each chute 9.

[0063] A bearing seat 806 is installed at the top of the side baffle 802 and is rotatably connected to a rotating sleeve 807. One end of the rotating sleeve 807 is connected to a second drive motor 809 through a coupling. The second drive motor 809 is a reduction motor with a brake.

[0064] There are multiple chutes 4 connected to the inside of each receiving trough 301. Each chute 4 is arranged obliquely, wherein the chute 4 of the receiving trough 301 that receives the largest-sized citrus is aligned with the feed end of the aisle 803, and the other chute 4 of smaller size directly discharges the citrus.

[0065] Subsequently, the largest-sized citrus fruits roll down the channel 803 and are stopped by the stop plate 808, and finally stop in the recessed portion 804 for positioning. At this time, the quality detector 11 is aimed at the citrus fruits and detects the sweetness quality, which can be divided into multiple grades according to the quality. According to the different grades, the rotating disk 1001 drives the channel 803 to rotate as a whole and directs the outlet toward the entrance of the chute 9 of the corresponding grade. The chute 9 is arranged at an angle, and the citrus fruits are discharged after entering.

[0066] Embodiment 2: A non-destructive citrus quality detector can use the H100F standard detection instrument of Beijing Sunshine Yishida Technology Co., Ltd., with a weight of 400g, a size of 110X160X169mm, a single detection time of 3S, a halogen lamp as the light source, an integration time of 900ms, and a detection wavelength range of 650-950mm. It has multiple built-in detection models and can detect indicators such as soluble solids, acidity, and dry matter content of fruits. The H100F instrument has two halogen lamps arranged at an angle of 100 degrees. During the detection, the measuring end is close to the citrus, the light source enters the navel orange sample, and the light diffracted from the navel orange sample enters the spectrometer. The optical path structure diagram is shown as follows. Fig.12 , the diffracted light passes through the grating, which can focus and collimate the diffracted light. After entering the glass lens, the light passes through the slit and then through the lens to the thin film filter, which can improve the signal-to-noise ratio. After the instrument is started, the integration time is 900 milliseconds and the spectrum is recorded.

[0067] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A multi-stage citrus automatic selection device, characterized by: The invention comprises a primary screening device and a secondary screening device, wherein the primary screening device comprises a feed hopper (1) and a spiral material distribution frame (2), and the secondary screening device comprises a stop device (8), wherein the stop device (8) and the spiral material distribution frame (2) are connected via a material receiving box (3) and a chute (4), and a chute (9) is provided at one end of the stop device (8) away from the spiral material distribution frame (2).

2. The multi-stage citrus automatic selection device according to claim 1 is characterized in that: A material guide channel (101) is provided at the lower end of the feed hopper (1), a spiral material distribution frame (2) with a gradually increasing pitch along the length direction is provided at the discharge end of the material guide channel (101), the spiral material distribution frame (2) is rotatable, a material receiving box (3) is provided below the spiral material distribution frame (2), the material receiving box (3) is provided with a plurality of material receiving grooves (301) along the length direction of the spiral material distribution frame (2), and a material discharge port (302) is provided on one side of each material receiving groove (301). The material guide channel (101) and the spiral material distribution frame (2) are The tilted arrangement further comprises a first supporting leg (5) and a third supporting leg (7), wherein the first supporting leg (5) is provided with a first lifting rod (501) movable up and down, the upper end of the first lifting rod (501) being hinged to the feed hopper (1), and the third supporting leg (7) is provided with a third lifting rod (701) movable up and down, the third lifting rod (701) being provided with a hinged second transverse platform (702), and the second transverse platform (702) being rotatably connected to one end of the spiral material distribution frame (2).

3. The multi-stage citrus automatic selection device according to claim 2 is characterized in that: A cross support frame (502) is provided on one side of the first lifting rod (501) close to the material guide channel (101), the cross support frame (502) is provided below the material guide channel (101), and a laterally movable magnetic attraction block (503) is provided between the material guide channel (101) and the cross support frame (502), the magnetic attraction block (503) adsorbs the material guide channel (101) and the cross support frame (502).

4. The multi-stage citrus automatic selection device according to claim 2 is characterized in that: The second transverse shifting platform (702) comprises a second L-shaped frame (703), on which a second guide rail slider device (705) and a second transverse shifting plate (704) are provided. A rotating shaft portion (201) is provided at one end of the spiral material distribution frame (2), and the rotating shaft portion (201) is rotatably connected to the second transverse shifting plate (704). A supporting block (504) is provided at the front end of the cross support frame (502), and an annular portion is provided at the other end of the spiral material distribution frame (2), and the annular portion is rotatably supported on the supporting block (504). The second L-shaped frame (703) is provided with a second push rod (707) which is threadedly connected, one end of the second push rod (707) abuts against the second transverse moving plate (704), the lower end of the second L-shaped frame (703) is hinged to the third lifting rod (701), one side of the third lifting rod (701) is further provided with an outwardly extending horizontal plate (706), the outwardly extending horizontal plate (706) is provided with a third push rod (708) which is threadedly connected, and the upper end of the third push rod (708) abuts against the lower end of the second L-shaped frame (703).

5. The multi-stage citrus automatic selection device according to claim 4 is characterized in that: The second supporting leg (6) is provided with a second lifting rod (601) which can move up and down, and a first transverse platform (602) is provided at the upper end of the second lifting rod (601). The first transverse platform (602) comprises a first L-shaped frame (603). A first transverse plate (604) is provided on the first L-shaped frame (603). The first transverse plate (604) supports the material receiving box (3). A first guide rail slider device (605) is provided between the first transverse plate (604) and the first L-shaped frame (603). A first push rod (606) is also provided on the first L-shaped frame (603). One end of the first push rod (606) abuts against the first transverse plate (604).

6. The multi-stage citrus automatic selection device according to claim 1 is characterized in that: Each receiving trough (301) is provided with an arc-shaped guide plate (304) that can move up and down, and the lower end of each arc-shaped guide plate (304) faces each discharge port (302). A compression spring (305) is provided between the bottom end of the receiving box (3) and the lower end of the arc-shaped guide plate (304).

7. The multi-stage citrus automatic selection device according to claim 6 is characterized in that: A fourth guide rail slider device (307) and a partition plate (306) connected to the fourth guide rail slider device (307) are provided at the bottom end of the material receiving box (3); the partition plate (306) divides the interior of the material receiving box (3) into a plurality of material receiving grooves (301); a strip-shaped through groove (308) is provided on the side wall of the material receiving box (3); and a locking screw (309) is provided; the locking screw (309) passes through the strip-shaped through groove (308) to be threadedly connected to one end of the partition plate (306).

8. The multi-stage citrus automatic selection device according to claim 6 is characterized in that: Each material outlet (302) is provided with a sleeve structure (312), a guide bell mouth structure (311) is provided inside the sleeve structure (312) close to the material receiving box (3), and a threaded flange structure (313) is provided at the outer end of the sleeve structure (312).

9. The multi-stage citrus automatic selection device according to claim 1 is characterized in that: The stopping device (8) comprises a base (801), two side baffles (802) arranged in parallel and spaced apart are provided on the base (801), a channel (803) is provided between the side baffles (802), an outlet of the chute (4) is aligned with one end of the channel (803), a stopping plate (808) is provided at the channel (803), a lower concave portion (804) is provided at the lower end of the channel (803), a through groove (805) is provided on the side baffle (802), a quality detector (11) facing the channel (803) is provided at the through groove (805), and the other end of the channel (803) is aligned with the chute (9).

10. The multi-stage citrus automatic selection device according to claim 9, characterized in that: A rotatable rotating sleeve (807) is provided at the upper end of the side baffle (802); a plurality of stop plates (808) are evenly distributed along the circumference of the rotating sleeve (807); a turntable device (10) is provided below the stop device (8); the turntable device (10) is provided with a rotatable rotating disk (1001); the rotating disk (1001) is connected to the base (801); a plurality of chutes (9) are arranged along the circumference of the rotating axis of the rotating disk (1001); the rotating disk (1001) rotates so that the clamping channel (803) can be selectively aligned with each chute (9).

Images