Red date sorting and sterilizing system

Abstract

The utility model discloses a red date sorting and sterilizing system, and belongs to the technical field of red date processing. The system comprises a feeding hopper, a visual classification device, a sterilization device, a feeding device, a manual selection conveying belt and a discharging conveying belt. A blanking conveying structure, a returning conveying structure, a tail end conveying structure and a grading conveying structure are arranged on the visual grading device; the visual grading device, the sterilization device and the feeding device are arranged in the front-back direction, and the manual selection conveying belt and the discharging conveying belt are arranged in the left-right direction; the feeding device and the returned material conveying structure are both positioned between the visual grading device and the sterilizing device; the blanking conveying structure and the tail end conveying structure extend out of one side, close to the sterilizing device, of the visual grading device; the grading conveying structure extends out of the side, away from the sterilization device, of the visual grading device, and the grading conveying structure at the rear end is connected with a manual selection conveying belt. The manual selection conveying belt is connected with the sterilization device; the discharging conveying belt is connected with the sterilization device and provided with a metal detector.

Description

TECHNICAL FIELD

[0001] The utility model belongs to red jujube processing technical field, especially related to a sorting and sterilization system of red jujube. BACKGROUND

[0002] The processing procedure of red jujube is: cleaning, drying, sorting, sterilization and so on, then according to the situation, post-processing (such as removing the core, opening or slicing etc.) is carried out. The cleaning and drying procedure can be located in one layer, and the sorting and sterilization procedure can be located in another layer.

[0003] As the patent application No. CN201310207720.0 discloses a kind of red jujube nondestructive automatic grading machine based on machine vision technology, including machine vision system, including roller conveying chain plate device, be installed with feeding hopper in the feeding end of this roller conveying chain plate device, the illumination and CCD camera unit of machine vision system are installed above this roller conveying chain plate device, so as to be able to photograph the image of red jujube on roller conveying chain plate device;Several grading conveying channels are installed in the side of roller conveying chain plate device behind this illumination and CCD camera unit, and actuating mechanism is installed in the other side of roller conveying chain plate device, the industrial control machine of actuating mechanism is connected with the machine vision system, so as to according to the image of shooting red jujube is sent into corresponding grading conveying channel, wherein the industrial control machine in machine vision system is connected with PLC, the actuating mechanism is connected with the relay control circuit of PLC;Wherein actuating mechanism includes high-pressure gas source device and jet nozzle by pipeline intercommunication;Wherein the section of roller conveying chain plate device that red jujube to be graded runs is composed of one inclined upward section and one horizontal section, the illumination and CCD camera unit are installed above this horizontal section;Wherein roller conveying chain plate device includes chain transmission mechanism, two parallel and synchronous transmission chains are equipped on the chain transmission mechanism, several roller shafts are installed between the two transmission chains, both ends of each roller shaft are installed on two transmission chains by bearing, so that each roller shaft can rotate around its shaft, in addition, a ring-shaped groove is arranged in the middle of each roller shaft, so that a pit corresponding to the size of single red jujube is formed between adjacent two roller shafts;The sprocket of chain transmission mechanism is sequentially connected by transmission mechanism, speed reducer and motor drive;In addition, proximity switch or photoelectric switch is installed beside at least one sprocket of chain transmission mechanism, the proximity switch or photoelectric switch is connected with the industrial control machine in machine vision system;Wherein a flexible rubbing plate is fixedly installed below the inclined upward section of roller conveying chain plate device, the surface of flexible rubbing plate is in contact with the roller shaft at the inclined upward section, so as to drive the roller shaft to rotate;And a flexible rubbing plate is also fixedly installed below the horizontal section of roller conveying chain plate device, the surface of flexible rubbing plate is in contact with the roller shaft at the horizontal section, so as to drive the roller shaft to rotate;The flexible rubbing plate includes bottom plate, 2-3cm thick sponge layer is covered on the surface of bottom plate;Wherein feeding unit is composed of three different feeding amount conveying belts, the controller of each conveying belt is electrically connected with the control unit, and wherein the conveying belt with the smallest feeding amount feeds one fruit each time;Wherein movable bottom plate is hinged on hopper, and the movable bottom plate is also connected with the piston rod of turnover mechanism, so as to make the bottom plate rotate to open or close hopper, the turnover mechanism adopts air cylinder or oil cylinder, and the controller of turnover mechanism is electrically connected with the control unit;Wherein all conveying belts adopt uphill running arrangement, and flexible baffle is installed on conveying belt, so as to prevent fruit from sliding, flexible material is pasted on the inner surface of hopper in contact with fruit;Baffle is installed on packaging box conveying belt, so as to drive packaging box to move synchronously;Three weighing sensors are evenly distributed below the hopper, and the three weighing sensors are respectively located at both sides and the middle position of the hopper; wherein the control unit adopts a single-chip microcomputer or a PLC, and in addition, a shock-absorbing rubber is installed at the connection between the weighing sensor and the hopper.

[0004] A patent with application number CN202323018640.9 discloses a visual-based grading conveyor device, which comprises a feeding hopper, a return material conveying structure, a terminal conveying structure, a plurality of roller conveying structures arranged side by side on the left and right, and a plurality of grading conveying structures arranged side by side on the front and back. The roller conveying structures are arranged in the front-back direction, and the roller conveying structures comprise an ascending section and a horizontal section from front to back. The grading conveying structures are located at the rear of the horizontal section. The terminal conveying structure is located at the end of the roller conveying structure, and a return material conveying structure is arranged between the output end of the terminal conveying structure and the feeding hopper. The front lower side of the horizontal section is provided with a rubbing plate. The device further comprises a material falling conveying structure, a plurality of lifting conveying structures, and a feeding chute located directly below the rear end of the lifting conveying structure. The ascending section is located directly behind the feeding hopper. Each roller conveying structure is correspondingly provided with a lifting conveying structure in front of the roller conveying structure. The lifting conveying structure is arranged obliquely upward from front to back, and a plurality of feeding baffles are arranged thereon at intervals. The lower part of the lifting conveying structure is located in the feeding hopper, and the upper part of the lifting conveying structure is located directly above the corresponding ascending section. The feeding chute is arranged on the ascending section, and a strip-shaped hole for red dates to pass through is arranged on the feeding chute in the front-back direction. The strip-shaped hole is arranged in the front-back direction and located directly above the roller shaft of the roller conveying structure. The material falling conveying structure is located directly below the ascending section and the rubbing plate, and the output end of the material falling conveying structure is connected with the return material conveying structure. The grading conveying structures, the terminal conveying structure, and the material falling conveying structure are all arranged in the left-right direction. The output ends of the plurality of grading conveying structures are located on the same side. The output end of the terminal conveying structure and the output end of the material falling conveying structure are located on the same side and are located on the opposite side of the output end of the grading conveying structure.

[0005] The visual grading device and the sterilization device (especially the sterilization device with a length of 8m) are relatively long, and if they are arranged in sequence, a longer workshop is required, and the requirements for the workshop are high. In addition, the visual grading device is not 100% reliable, and manual selection and metal detection are usually required, which further increases the length of the entire production line. Practical new type content

[0006] In order to solve the foregoing problems, the embodiments of the present application provide a sorting and sterilization system for red dates, which increases a manual selection conveying belt and a metal detector to ensure the quality of products, rearranges the entire line, and reduces the length of the entire production line. The technical solution is as follows:

[0007] The utility model discloses an embodiment provides a kind of sorting and sterilization system of red dates, which comprises feeding hopper 1, visual grading device 2 and sterilization device 3;Visual grading device 2 is equipped with blanking conveying structure 21, return material conveying structure 22, end conveying structure 23 and multiple grading conveying structure 24;The system further includes feeding device 4, artificial selection conveyor 5 and discharge conveyor 6;Visual grading device 2, sterilization device 3 and feeding device 4 are all arranged along front and back and its left and right side by side, the discharge end of the front end of sterilization device 3 is extended forward relative to visual grading device 2, and artificial selection conveyor 5 and discharge conveyor 6 are both arranged along left and right, the feeding hopper 1 is located in front of visual grading device 2, and it is connected with the feeding port of the front end of visual grading device 2 through the first lifting conveyor 11;Feeding device 4 and return material conveying structure 22 are both located between visual grading device 2 and sterilization device 3, and they are connected with feeding hopper 1;The discharge end of blanking conveying structure 21 and end conveying structure 23 extends from the side of visual grading device 2 close to sterilization device 3 and above return material conveying structure 22;The discharge end of grading conveying structure 24 extends from the side of visual grading device 2 away from sterilization device 3, and the discharge end of the rear end of grading conveying structure 24 is connected with the feeding end of artificial selection conveyor 5 through the third lifting conveyor 13;Artificial selection conveyor 5 is located behind sterilization device 3, and multiple artificial selection stations 7 are arranged left and right behind it, and the output end is connected with the feeding end of sterilization device 3 through the fourth lifting conveyor 14;Discharge conveyor 6 is located in front of sterilization device 3 and feeding hopper 1, and its input end is connected with the discharge end of sterilization device 3, and a metal detector 8 is arranged thereon.

[0008] Specifically, the blanking conveying structure 21, the end conveying structure 23 and the grading conveying structure 24 in the utility model embodiment are all arranged along left and right, and the return material conveying structure 22 is arranged along front and back;The blanking conveying structure 21 is arranged at the front part of the visual grading device 2, the end conveying structure 23 is located at the rear end of the visual grading device 2, and multiple grading conveying structures 24 are arranged side by side in front and back and are all located between the blanking conveying structure 21 and the end conveying structure 23, and the number of the grading conveying structures 24 is 4-8.

[0009] Among them, the return material conveying structure 22 in the utility model embodiment includes a second horizontal conveyor belt, a second lifting conveyor belt and a second chute;The second horizontal conveyor belt is arranged along front and back, and is located between the visual grading device 2 and the feeding device 4, and is located below the discharge end of the end conveying structure 23 to the second lifting conveyor belt, and is located below the discharge end of the blanking conveying structure 21 and the end conveying structure 23;The second lifting conveyor belt is arranged obliquely upwards from back to front;The second chute is arranged along left and right, and is arranged obliquely downwards from the upper end of the second lifting conveyor belt to above the feeding hopper 1.

[0010] Wherein, the feeding device 4 in the embodiment of the utility model includes vertical lifting conveying structure 41, first horizontal conveying belt 42 and first chute 43, the vertical lifting conveying structure 41 is located between second horizontal conveying belt and sterilization device 3, and it passes through the floor where visual classification device 2 and sterilization device 3 are located downwards, the first horizontal conveying belt 42 is set along front and back, and its rear end is connected with the upper end of vertical lifting conveying structure 41, and its front end is next to the upper hopper 1, the first chute 43 is set along left and right, and it is obliquely downward from the front end of first horizontal conveying belt 42 to the directly above of upper hopper 1.

[0011] Specifically, the second chute in the embodiment of the utility model is located below the first chute 43.

[0012] Further, the input end of the discharging conveying belt 6 is connected with the discharging end of the sterilization device 3 through the fifth lifting conveying belt 15, the metal detector 8 is a door type structure and is perpendicular to the discharging conveying belt 6, the fifth lifting conveying belt 15 is set along left and right and is obliquely upward from the discharging end of the sterilization device 3 to the input end of the discharging conveying belt 6.

[0013] Specifically, the first lifting conveying belt 11 is obliquely upward from front to back, the third lifting conveying belt 13 is obliquely upward from front to back, and the fourth lifting conveying belt 14 is set along left and right and is obliquely upward from the output end of the artificial selection conveying belt 5 to the input end of the sterilization device 3.

[0014] Specifically, the sterilization device 3 in the embodiment of the utility model is a microwave sterilization machine.

[0015] Specifically, the height of the artificial selection conveying belt 5 in the embodiment of the utility model is 70-85cm, the distance between the visual classification device 2 and the sterilization device 3 is greater than 100cm, the distance between the discharging conveying belt 6 and the upper hopper 1 is greater than 80cm, and the height of the first horizontal conveying belt 42 is greater than 1.8m.

[0016] The technical scheme provided by the embodiment of the utility model has the beneficial effects that the sorting and sterilization system for red dates is provided in the embodiment of the utility model, the artificial selection conveying belt and the metal detector are added to ensure the quality of products, the whole line is rearranged (constitutes a similar structure of Kouzhi), the length of the whole production line is reduced, and the production line is more compact. Meanwhile, the layout does not affect the walking and operation of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic view of the sorting and sterilization system for red dates in the embodiment of the utility model.

[0018] In the figure: 1 feeding hopper, 2 visual grading device, 3 sterilization device, 4 feeding device, 5 artificial selection conveyor belt, 6 discharging conveyor belt, 7 artificial selection station, 8 metal detector;

[0019] 11 first lifting conveyor belt, 12 second lifting conveyor belt, 13 third lifting conveyor belt, 14 fourth lifting conveyor belt, 15 fifth lifting conveyor belt;

[0020] 21 material falling conveying structure, 22 material returning conveying structure, 23 terminal conveying structure, 24 grading conveying structure;

[0021] 41 vertical lifting conveying structure, 42 first horizontal conveyor belt, 43 first chute. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in further detail below in combination with the drawings.

[0023] Example 1

[0024] Referring to Figure 1 , example 1 provides a sorting and sterilization system for red dates, which comprises a feeding hopper 1, a visual grading device 2, a sterilization device 3, a feeding device 4, an artificial selection conveyor belt 5 and a discharging conveyor belt 6. The visual grading device 2 is provided with a material falling conveying structure 21, a material returning conveying structure 22, a terminal conveying structure 23 and a plurality of grading conveying structures 24. The material falling conveying structure 21, the terminal conveying structure 23 and the grading conveying structures 24 are arranged along the left-right direction, and the material returning conveying structure 22 is arranged along the front-back direction. The material falling conveying structure 21 is arranged at the front of the visual grading device 2, the terminal conveying structure 23 is arranged at the rear end of the visual grading device 2, the plurality of grading conveying structures 24 are arranged side by side in front and back and are located between the material falling conveying structure 21 and the terminal conveying structure 23, and the number of the grading conveying structures 24 is 4-8. Specifically, the visual grading device 2 can refer to the description of application number CN201310207720.0 or CN202323018640.9. The sterilization device 3 is a microwave sterilization machine.

[0025] The visual grading device 2, the sterilization device 3 and the feeding device 4 are arranged in front-rear direction and side-by-side in left-right direction; specifically, the visual grading device 2, the return material conveying structure 22, the feeding device 4 and the sterilization device 3 are arranged in left-right direction in sequence. The discharge end of the front end of the sterilization device 3 extends forward relative to the visual grading device 2, the artificial selection conveying belt 5 and the discharge conveying belt 6 are arranged in left-right direction, the feeding hopper 1 is located in front of the visual grading device 2 and is connected with the feeding port of the front end of the visual grading device 2 through the first lifting conveying belt 11. The feeding device 4 and the return material conveying structure 22 are located between the visual grading device 2 and the sterilization device 3 and are connected with the feeding hopper 1. The discharge end of the material falling conveying structure 21 and the end conveying structure 23 extends from the side of the visual grading device 2 close to the sterilization device 3 and reaches above the return material conveying structure 22. The discharge end of the grading conveying structure 24 extends from the side of the visual grading device 2 away from the sterilization device 3, and the discharge end of the rear end of the grading conveying structure 24 is connected with the feeding end of the artificial selection conveying belt 5 through the third lifting conveying belt 13. The artificial selection conveying belt 5 is located behind the sterilization device 3, a plurality of artificial selection workstations 7 (arranged with operators for artificial selection) are arranged side-by-side in left-right direction behind the artificial selection conveying belt 5, and the output end of the artificial selection conveying belt 5 is connected with the feeding end of the sterilization device 3 through the fourth lifting conveying belt 14, and the artificial selection conveying belt 5 is a white conveying belt. The discharge conveying belt 6 is located in front of the sterilization device 3 and the feeding hopper 1, the input end of the discharge conveying belt 6 is connected with the discharge end of the sterilization device 3 through the fifth lifting conveying belt 15, and the discharge conveying belt 6 is provided with a metal detector 8. The metal detector 8 is a door type structure and is perpendicular to the discharge conveying belt 6.

[0026] The return material conveying structure 22 in the embodiment of the utility model comprises a second horizontal conveying belt, a second lifting conveying belt and a second chute. The second horizontal conveying belt is arranged in front-rear direction and is located between the visual grading device 2 and the feeding device 4, extends from the upper end of the discharge end of the end conveying structure 23 to the lower end of the second lifting conveying belt and is arranged on the ground. The second lifting conveying belt is arranged obliquely upwards from back to front. The second chute is arranged in left-right direction and extends obliquely downwards from the upper end of the second lifting conveying belt to above the feeding hopper 1.

[0027] The feeding device 4 in the embodiment of the utility model comprises a vertical lifting conveying structure 41, a first horizontal conveying belt 42 and a first chute 43. The vertical lifting conveying structure 41 is located between the second horizontal conveying belt and the sterilization device 3, passes through the floor where the visual grading device 2 and the sterilization device 3 are located downwards and is specifically a bucket elevator. The first horizontal conveying belt 42 is arranged in front-rear direction, the rear end of the first horizontal conveying belt 42 is connected with the upper end of the vertical lifting conveying structure 41, the front end of the first horizontal conveying belt 42 is located beside the feeding hopper 1 and the first horizontal conveying belt 42 is suspended. The first chute 43 is arranged in left-right direction and extends obliquely downwards from the front end of the first horizontal conveying belt 42 to above the feeding hopper 1. The second chute is located below the first chute 43.

[0028] Specifically, the first lifting conveyor belt 11 is arranged obliquely upward from front to back. The third lifting conveyor belt 13 is arranged obliquely upward from front to back. The fourth lifting conveyor belt 14 is arranged along left and right directions and is obliquely upward from the output end of the artificial selection conveyor belt 5 to the input end of the sterilization device 3. The fifth lifting conveyor belt 15 is arranged along left and right directions and is obliquely upward from the output end of the sterilization device 3 to the input end of the discharge conveyor belt 6. The conveying belts of the first lifting conveyor belt 11, the second lifting conveyor belt, the third lifting conveyor belt 13, the fourth lifting conveyor belt 14 and the fifth lifting conveyor belt 15 are all provided with conveying baffles (perpendicular to the conveying direction) along the conveying direction.

[0029] Specifically, the height of the artificial selection conveyor belt 5 in the embodiment of the utility model is 70-85 cm, the distance between the visual grading device 2 and the sterilization device 3 is greater than 100 cm, and the distance between the discharge conveyor belt 6 and the feeding hopper 1 is greater than 80 cm. The height of the first horizontal conveyor belt 42 is greater than 1.8 m.

[0030] Embodiment 2

[0031] Referring to Figure 1 Embodiment 2 provides a sorting and sterilization system for red dates, which has basically the same structure as that of Embodiment 1, except that the visual grading device 2, the return material conveying structure 22, the feeding device 4 and the sterilization device 3 are arranged in sequence from left to right. The discharge end of the material dropping conveying structure 21 and the terminal conveying structure 23 extends from the right side of the visual grading device 2 and is conveyed to the right. The discharge end of the grading conveying structure 24 extends from the left side of the visual grading device 2 and is conveyed to the left. The visual grading device 2 is conveyed backward, the sterilization device 3 is conveyed forward, the artificial selection conveyor belt 5 is conveyed to the right, and the discharge conveyor belt 6 is conveyed to the left. The fourth lifting conveyor belt 14 is arranged obliquely upward from left to right. The fifth lifting conveyor belt 15 is arranged obliquely upward from right to left.

[0032] Embodiment 3

[0033] Embodiment 3 provides a sorting and sterilization system for red dates, which has basically the same structure as that of Embodiment 1, except that the height of the artificial selection conveyor belt 5 in the embodiment is 80 cm to facilitate the operation of the operator, the distance between the return material conveying structure 22 and the sterilization device 3 is 60 cm to facilitate walking, the distance between the discharge conveyor belt 6 and the feeding hopper 1 is 100 cm to facilitate operation and walking. The height of the first horizontal conveyor belt 42 is 2 m to facilitate the operator to pass from below.

[0034] Embodiment 4

[0035] The embodiment 4 provides a sorting and sterilization system of red dates, which has basically the same structure as the structure of the embodiment 1, and the difference is that the number of the artificial picking stations 7 in the embodiment is two. The number of the grading conveying structures 24 is six, and the conveying belts from front to back are the conveying belts for outputting large dates, red splits, wrinkled skins, deformed dates, bad dates and large dates.

[0036] In the embodiment, the first, second, third, fourth and fifth are only used for distinguishing, and have no special meaning.

[0037] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sorting and sterilizing system for red dates, comprising a feeding hopper (1), a visual grading device (2) and a sterilizing device (3); the visual grading device (2) is provided with a falling material conveying structure (21), a returned material conveying structure (22), a terminal conveying structure (23) and a plurality of grading conveying structures (24); characterized in that, the system further comprises a feeding device (4), a manual selection conveying belt (5) and a discharging conveying belt (6); the visual grading device (2), the sterilizing device (3) and the feeding device (4) are arranged in front-to-back direction and side-by-side, the discharging end of the front end of the sterilizing device (3) extends forward relative to the visual grading device (2), the manual selection conveying belt (5) and the discharging conveying belt (6) are arranged in left-to-right direction, the feeding hopper (1) is located in front of the visual grading device (2) and is connected with the feeding port of the front end of the visual grading device (2) through a first lifting conveying belt (11); the feeding device (4) and the returned material conveying structure (22) are located between the visual grading device (2) and the sterilizing device (3) and are connected with the feeding hopper (1); the discharging end of the falling material conveying structure (21) and the terminal conveying structure (23) extends from the side of the visual grading device (2) close to the sterilizing device (3) and reaches above the returned material conveying structure (22); the discharging end of the grading conveying structure (24) extends from the side of the visual grading device (2) away from the sterilizing device (3), the discharging end of the rear-end grading conveying structure (24) is connected with the feeding end of the manual selection conveying belt (5) through a third lifting conveying belt (13); the manual selection conveying belt (5) is located behind the sterilizing device (3), a plurality of manual selection workstations (7) are arranged side-by-side behind the manual selection conveying belt (5), and the output end of the manual selection conveying belt (5) is connected with the feeding end of the sterilizing device (3) through a fourth lifting conveying belt (14); the discharging conveying belt (6) is located in front of the sterilizing device (3) and the feeding hopper (1), the input end of the discharging conveying belt (6) is connected with the discharging end of the sterilizing device (3), and a metal detector (8) is arranged on the discharging conveying belt (6).

2. The sorting and sterilizing system of red dates according to claim 1, characterized in that, The falling material conveying structure (21), the terminal conveying structure (23) and the grading conveying structure (24) are arranged in left-to-right direction, and the returned material conveying structure (22) is arranged in front-to-back direction; the falling material conveying structure (21) is arranged at the front of the visual grading device (2), the terminal conveying structure (23) is located at the rear end of the visual grading device (2), a plurality of grading conveying structures (24) are arranged side-by-side in front-to-back direction and are located between the falling material conveying structure (21) and the terminal conveying structure (23), and the number of the grading conveying structures (24) is 4-8.

3. The sorting and sterilizing system of red dates according to claim 2, characterized in that, The return material conveying structure (22) comprises a second horizontal conveying belt, a second lifting conveying belt and a second chute; the second horizontal conveying belt is arranged in front-to-back direction and is located between the visual grading device (2) and the feeding device (4), and extends from the position directly below the discharge end of the end conveying structure (23) to the second lifting conveying belt which is located directly below the discharge end of the end conveying structure (23) and the material falling conveying structure (21); the second lifting conveying belt is arranged in a slanting upward direction from back to front; and the second chute is arranged in left-to-right direction and extends from the upper end of the second lifting conveying belt to the position directly above the upper hopper (1) in a slanting downward direction.

4. The sorting and sterilizing system of red dates according to claim 3, characterized in that, The feeding device (4) comprises a vertical lifting conveying structure (41), a first horizontal conveying belt (42) and a first chute (43); the vertical lifting conveying structure (41) is located between the second horizontal conveying belt and the sterilization device (3) and penetrates the floor on which the visual grading device (2) and the sterilization device (3) are located in a downward direction; the first horizontal conveying belt (42) is arranged in front-to-back direction and is connected with the upper end of the vertical lifting conveying structure (41) at the rear end thereof and extends to the position beside the upper hopper (1) at the front end thereof; and the first chute (43) is arranged in left-to-right direction and extends from the front end of the first horizontal conveying belt (42) to the position directly above the upper hopper (1) in a slanting downward direction.

5. The sorting and sterilizing system of red dates according to claim 4, characterized in that, The second chute is located below the first chute (43).

6. The sorting and sterilizing system of red dates according to claim 1, characterized in that, The input end of the discharge conveying belt (6) is connected with the discharge end of the sterilization device (3) through a fifth lifting conveying belt (15), the metal detector (8) is in a door type structure and is perpendicular to the discharge conveying belt (6), the fifth lifting conveying belt (15) is arranged in left-to-right direction and extends from the discharge end of the sterilization device (3) to the input end of the discharge conveying belt (6) in a slanting upward direction.

7. The sorting and sterilizing system of red dates according to claim 1, characterized in that, The first lifting conveying belt (11) is arranged in a slanting upward direction from front to back, the third lifting conveying belt (13) is arranged in a slanting upward direction from front to back, and the fourth lifting conveying belt (14) is arranged in left-to-right direction and extends from the output end of the artificial selection conveying belt (5) to the input end of the sterilization device (3) in a slanting upward direction.

8. The sorting and sterilizing system of red dates according to claim 1, characterized in that, The sterilization device (3) is a microwave sterilization machine.

9. The sorting and sterilizing system of red dates according to claim 4, characterized in that, The height of the artificial selection conveying belt (5) is 70-85 cm, the distance between the visual grading device (2) and the sterilization device (3) is greater than 100 cm, the distance between the discharge conveying belt (6) and the upper hopper (1) is greater than 80 cm, and the height of the first horizontal conveying belt (42) is greater than 1.8 m.

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