Adjustable agricultural product automatic cleaning and sorting equipment

Abstract

The invention discloses adjustable agricultural product automatic cleaning and sorting equipment. The equipment comprises a fruit and vegetable cleaning mechanism and a fruit and vegetable sorting mechanism. In a water tank of the fruit and vegetable cleaning mechanism, an aeration pump conveys gas to generate bubbles, a driving motor is matched to drive a net barrel to rotate and stir, the cleaning effect is enhanced, a blow-down valve facilitates sewage discharge, and a belt elevator can convey cleaned agricultural products to a sorting mechanism. In the fruit and vegetable sorting mechanism, a conveyor conveys agricultural products to a sorting roller, the sorting roller is driven by a speed reducer to rotate, the aperture of an opening gradually changes, and sorting according to size is achieved. The equipment is further provided with a sorting adjuster, the outer sleeve is rotated to drive the rotating disc, the fan-shaped blades are made to rotate, the inner diameter of the inner sleeve can be adjusted, and then the sorting specification is flexibly changed. And the tensioning ring can ensure the stability after adjustment. The equipment improves the automation degree and efficiency of agricultural product cleaning and sorting, and meets the treatment requirements of agricultural products of different specifications.

Description

Technical Field

[0001] This invention relates to the field of fruit and vegetable cleaning and sorting machine technology, specifically to an adjustable automated cleaning and sorting device for agricultural products. Background Technology

[0002] In the agricultural product processing sector, cleaning and sorting are crucial preliminary steps, directly impacting the quality of subsequent processed products and the smoothness of the overall production process. Traditional agricultural product cleaning methods rely heavily on manual labor, with workers placing produce in pools and manually stirring and rubbing it. This method is not only labor-intensive and inefficient but also struggles to ensure uniform and thorough cleaning. Especially for irregularly shaped or unevenly surfaced produce, some areas may remain uncleaned, leaving residual mud, pesticides, and other impurities that could affect the quality and safety of the product. In the sorting stage, traditional methods primarily rely on visual selection, classifying produce based on size, color, and shape. This method is not only labor-intensive but also inherently subjective; different personnel may have varying interpretations of sorting standards, making it difficult to guarantee accuracy and consistency, and thus failing to meet the demands of large-scale, standardized production. Furthermore, some existing automated cleaning and sorting equipment also has limitations. Some cleaning equipment uses a single cleaning method, making it difficult to adjust cleaning parameters according to the characteristics of different agricultural products, resulting in unsatisfactory cleaning effects; some sorting equipment has fixed sorting specifications, cannot be flexibly adjusted, and cannot meet the diverse sorting needs of different batches and varieties of agricultural products. Therefore, developing an efficient, precise, and flexibly adjustable automated cleaning and sorting equipment for agricultural products is of significant practical importance. Summary of the Invention

[0003] In view of the shortcomings mentioned above, this paper provides a technical solution for an adjustable automated cleaning and sorting device for agricultural products. The system includes a fruit and vegetable washing mechanism, the discharge port of which is horizontally and vertically connected to a fruit and vegetable sorting mechanism; wherein, the fruit and vegetable washing mechanism includes a water tank, several mesh cylinders that rotate equidistantly in a linear array in the inner cavity of the water tank, and a bracket fixed on the left side of the water tank, and a belt-type elevator that is connected to the discharge port on the left side of the water tank is installed on the top surface of the bracket. The fruit and vegetable sorting mechanism includes a support frame, a conveyor fixed to the top surface of the support frame, and a steel structure support fixed to the front side of the water tank. A shell is fixedly connected to the top surface of the steel structure support, and a sorting roller is rotatably installed inside the shell. A receiving hopper inserted into the inner cavity of the sorting roller is fixedly connected to the front port of the conveyor. The outer surface of the sorting roller is provided with multiple openings for fruits and vegetables to fall into, and each opening is provided with a sorting regulator. Each sorting regulator includes an inner sleeve, a base plate fixed to the bottom of the inner sleeve cavity, and a rotating disk rotatably connected to the upper surface of the base plate. Multiple fan-shaped blades arranged in a ring array are rotatably arranged between the base plate and the rotating disk. An outer sleeve is fixedly connected to the top of the rotating disk, and a tensioning ring is snapped into the inside of the outer sleeve. In the above technical solution, preferably: an aeration pump is fixedly connected to the bottom of the bracket, and the delivery end of the aeration pump is connected to an aeration pipe that penetrates to the bottom of the inner cavity of the water tank. Drain valves are installed on both the left and right sides of the bottom surface of the water tank. In the above technical solution, preferably: a drive motor is fixedly connected to the side wall of the water tank, and the rear end of each net cylinder passes through the water tank and is fixed with a sprocket. The output shaft of the drive motor is fixedly connected to one of the links, and the sprockets are connected to each other by chains. A protective shell covering the sprockets, chains and drive motor is fixed on the rear surface of the water tank. In the above technical solution, preferably: the rear section of the conveyor is located below the discharge port of the belt elevator, and a variable frequency reduction motor for supplying power to the conveyor is fixedly connected to the bottom surface of the support frame. In the above technical solution, preferably: the rear section of the receiving hopper is fixed below the discharge port of the conveyor, and the front section of the receiving hopper is inserted into the inner cavity of the sorting roller. In the above technical solution, preferably: the bottom of the outer shell has 3-5 openings, and each opening is fixed with a dispensing port. In the above technical solution, preferably: the openings on the outer ring of the sorting roller for the fruits and vegetables to fall into gradually increase in diameter from back to front, so as to sort fruits and vegetables of different sizes into their respective dispensing inlets. In the above technical solution, preferably: the front end of the sorting roller passes through the outer shell and is connected to the output shaft of the reducer. In the above technical solution, preferably: the inner sleeve is embedded and fixed in the opening of the outer ring of the sorting roller, and the inner cavity of the inner sleeve is provided with a sliding groove for the outer sleeve to rotate on the middle section side wall, and the inner cavity of the outer sleeve is provided with a slot for the tensioning ring to engage and tension the outer sleeve to restrict its posture. In the above technical solution, preferably: the interior of the rotating disk is provided with a plurality of arc-shaped grooves in a ring array, the upper surface of each fan-shaped blade is fixed with a protrusion that slides inside the arc-shaped groove, and the bottom surface of each fan-shaped blade is fixed with a protrusion that slides in accordance with the groove on the upper surface of the chassis. By rotating the fan-shaped blades, the inner diameter of the inner sleeve is expanded or reduced, thereby adjusting the requirements for sorting agricultural products of different sizes. As can be seen from the above technical solution, the adjustable automated cleaning and sorting equipment for agricultural products provided by the present invention has the following beneficial effects compared with the prior art: In this adjustable automated agricultural product cleaning and sorting equipment, the aeration pump in the fruit and vegetable cleaning mechanism delivers gas to the water tank through the aeration pipe to generate bubbles. This, combined with the drive motor, rotates the mesh drum to agitate the produce, enhancing the cleaning effect. The drain valve facilitates the discharge of wastewater. A belt conveyor automatically transports the cleaned agricultural products to the fruit and vegetable sorting mechanism, improving conveying efficiency. The sorting drum rotates under the drive of a reducer, with its opening diameter gradually increasing from back to front, enabling sorting of agricultural products by size. The sorting regulator is ingeniously designed; rotating the outer sleeve drives the rotating disc, causing the fan-shaped blades to rotate. This allows for the expansion or contraction of the inner sleeve's inner diameter, flexibly adjusting the size of the sorted agricultural products to meet different needs. A tensioning ring tightens and restricts the outer sleeve's posture, ensuring stability after adjustment. Overall, this improves the automation and efficiency of agricultural product cleaning and sorting. Attached Figure Description

[0004] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 A schematic diagram of the overall structure of an automatic cleaning and sorting equipment for agricultural products; Figure 2 This is a schematic diagram of a fruit and vegetable cleaning facility. Figure 3 A schematic diagram of a fruit and vegetable sorting facility; Figure 4 A schematic diagram of the sorting roller in a fruit and vegetable sorting mechanism; Figure 5 This is a schematic diagram of the sorting regulator in the sorting drum screen holes. Appendix Figure 1 -Appendix Figure 5 The correspondence between the components is as follows: 1. Fruit and vegetable washing mechanism; 1-1. Water tank; 1-2. Protective shell; 1-3. Support frame; 1-4. Belt elevator; 1-5. Net cylinder; 2. Fruit and vegetable sorting mechanism; 2-1. Support frame; 2-2. Conveyor; 2-3. Receiving hopper; 2-4. Distributing port; 2-5. Steel structure support frame; 2-6. Electric motor; 2-7. Reducer; 2-8. Sorting roller; 2-9. Outer shell; 2-10. Spiral blade; 3. Sorting regulator; 3-1. Inner sleeve; 3-2. Chassis; 3-3. Rotating disc; 3-4. Outer sleeve; 3-5. Tensioning ring; 3-6. Arc-shaped chute; 3-7. Fan-shaped blade. Detailed Implementation

[0005] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. In order to provide a clearer explanation and description of the technical solutions and implementation methods of the present invention, the following describes specific embodiments that implement the preferred technical solutions of the present invention. Example 1: An adjustable automated cleaning and sorting device for agricultural products. In the fruit and vegetable cleaning mechanism 1, the water tank 1-1 is a cuboid structure. The support 1-3 is fixed on the left side of the water tank 1-1, and the bottom of the support is connected to an aeration pump. The aeration pipe connected to the delivery end of the aeration pump passes through the bottom of the inner cavity of the water tank 1-1. Drain valves are installed on the left and right sides of the bottom of the water tank 1-1. A drive motor is fixed on the side wall of the water tank 1-1. Several mesh cylinders 1-5 rotate equidistantly in a linear array in the inner cavity of the water tank 1-1. The rear end of the mesh cylinders 1-5 passes through the water tank 1-1 and is fixed with a sprocket. The output shaft of the drive motor is fixed to one of the sprockets. The sprockets are connected by a chain. A protective shell 1-2 is fixed on the rear surface of the water tank 1-1 to cover the sprocket, chain and drive motor. The belt-type elevator 1-4 installed on the top surface of the support 1-3 is connected to the discharge port on the left side of the water tank 1-1. In the fruit and vegetable sorting mechanism 2, the top surface of the support frame 2-1 is fixed with the conveyor 2-2, and the rear section of the conveyor 2-2 is located below the discharge port of the belt elevator 1-4. The bottom surface of the support frame 2-1 is fixed with a variable frequency reduction motor to provide power for the conveyor 2-2. The steel structure support 2-5 is fixed to the front side of the water tank 1-1, and its top surface is fixedly connected to the outer shell 2-9. The sorting roller 2-8 is rotatably installed inside the outer shell 2-9. The front end of the sorting roller 2-8 passes through the outer shell 2-9 and is connected to the output shaft of the reducer 2-7. The front port of the conveyor 2-2 is fixedly connected to the receiving hopper 2-3. The rear section of the receiving hopper 2-3 is fixed below the discharge port of the conveyor 2-2, and the front section is inserted into the inner cavity of the sorting roller 2-8. The bottom of the outer shell 2-9 has 3 openings, and the dispensing port 2-4 is fixed on each opening. The openings on the outer ring of the sorting roller 2-8 for the fruits and vegetables to fall into gradually increase in diameter from back to front. In the sorting regulator 3, the inner sleeve 3-1 is embedded and fixed in the outer ring opening of the sorting roller 2-8. The rotating disk 3-3 is rotatably connected to the chassis 3-2 at the bottom of the inner cavity of the inner sleeve 3-1. Multiple fan-shaped blades 3-7 arranged in a ring array are rotatably arranged between the chassis 3-2 and the rotating disk 3-3. Multiple arc-shaped grooves 3-6 are arranged in a ring array inside the rotating disk 3-3. The upper surface of the fan-shaped blades 3-7 is fixed with a protrusion that slides inside the arc-shaped groove 3-6, and the bottom surface is fixed with a protrusion that slides in accordance with the groove on the upper surface of the chassis 3-2. The outer sleeve 3-4 is fixed on the upper surface of the rotating disk 3-3. The middle section of the inner cavity of the inner sleeve 3-1 is provided with a groove for the outer sleeve 3-4 to rotate. The inner cavity of the outer sleeve 3-4 is provided with a slot. The tensioning ring 3-5 is engaged in the slot to tension and restrict the posture of the outer sleeve 3-4. During operation, fruits and vegetables are placed in water tank 1-1, and the drive motor drives the mesh cylinder 1-5 to rotate for cleaning. The aeration pump aerates the water tank 1-1 through the aeration pipe to enhance the cleaning effect. After cleaning, the fruits and vegetables are lifted by belt elevator 1-4 to conveyor 2-2, and then enter the sorting drum 2-8 through receiving hopper 2-3. Fruits and vegetables of different sizes fall into the corresponding sorting port 2-4 through openings of different diameters. Rotating the outer sleeve 3-4 drives the rotating disk 3-3 to rotate, and the fan-shaped blades 3-7 rotate accordingly to expand or shrink the inner diameter of the inner sleeve 3-1, adjusting the sorting size. Example 2: An adjustable automated cleaning and sorting device for agricultural products. The overall structure of the fruit and vegetable cleaning mechanism 1 is the same as in Example 1, but the size of the water tank 1-1 is appropriately increased according to actual needs to accommodate the cleaning of more fruits and vegetables. In the fruit and vegetable sorting mechanism 2, the bottom of the outer shell 2-9 has four openings and corresponding dispensing ports 2-4. The openings on the outer ring of the sorting roller 2-8 for the fruits and vegetables to fall into gradually increase in diameter from back to front, with slight variations to accommodate the sorting needs of different types of fruits and vegetables. In the sorting adjuster 3, the connection and structure of components such as the inner sleeve 3-1, the base 3-2, the rotating disk 3-3, the outer sleeve 3-4, the tensioning ring 3-5, the arc-shaped chute 3-6, and the fan-shaped blade 3-7 are consistent with those in Example 1. During operation, a large number of fruits and vegetables are placed in the water tank 1-1, and the washing process is the same as in Example 1. After washing, the fruits and vegetables enter the sorting drum 2-8 via the belt elevator 1-4 and the conveyor 2-2. Due to the change in the opening diameter of the sorting drum 2-8 and the increase in the number of dispensing ports 2-4, fruits and vegetables of different sizes and types can be sorted more precisely. When adjusting the sorting size, the inner diameter of the inner sleeve 3-1 is changed by rotating the outer sleeve 3-4 to drive the relevant components to move. Example 3: An adjustable automated cleaning and sorting device for agricultural products. In the fruit and vegetable cleaning mechanism 1, the water tank 1-1 is made of special anti-corrosion material to adapt to cleaning work in special environments. The arrangement density of the mesh cylinders 1-5 is appropriately increased to improve cleaning efficiency. In the fruit and vegetable sorting mechanism 2, the bottom of the outer shell 2-9 has 5 openings and a distribution port 2-4. The openings on the outer ring of the sorting roller 2-8 for the fruits and vegetables to fall into are set with a gradually increasing aperture from back to front, which is more refined and can meet the requirements for more precise sorting of fruits and vegetables. The connection and structure of each component of the sorting adjuster 3 are the same as in the previous two examples. During operation, the fruits and vegetables are placed in the water tank 1-1 and cleaned in a special anti-corrosion environment. The high-density arrangement of the mesh cylinders 1-5 enhances the cleaning effect. After cleaning, the fruits and vegetables enter the sorting roller 2-8 via the belt elevator 1-4 and the conveyor 2-2. Through the fine opening setting and multiple distribution ports 2-4 of the sorting roller 2-8, more precise sorting is achieved. The operation of adjusting the sorting size is the same as in the previous two examples. Based on the above description, the workflow of this technical solution is as follows: The agricultural products to be processed are placed in the water tank 1-1 of the fruit and vegetable cleaning mechanism 1. At this time, the aeration pump connected to the bottom of the left support 1-3 of the water tank 1-1 starts, supplying gas to the bottom of the inner cavity of the water tank 1-1 through the aeration pipe connected to the conveying end. This causes bubbles to form in the water within the water tank 1-1, enhancing the cleaning effect on the agricultural products. Simultaneously, the drive motor fixed to the side wall of the water tank 1-1 starts, and its output shaft drives the sprocket fixed to it to rotate. Since the rear ends of several mesh cylinders 1-5 penetrate the water tank 1-1 and are fixed with sprockets, and the sprockets are connected to each other by chains, the drive motor drives all the mesh cylinders 1-5 to rotate linearly in an equidistant array within the inner cavity of the water tank 1-1, thus improving the cleaning effect on the agricultural products. The agricultural products are stirred and washed. Wastewater generated during the washing process can be discharged through the drain valves installed on the left and right sides of the bottom surface of the water tank 1-1. After washing, the agricultural products are carried by the water flow to the discharge port on the left side of the water tank 1-1. At this time, the belt elevator 1-4 installed on the top surface of the support 1-3 and connected to the discharge port starts, lifting the agricultural products and conveying them to the conveyor 2-2 of the fruit and vegetable sorting mechanism 2. The variable frequency reduction motor fixed on the bottom surface of the support frame 2-1 provides power to the conveyor 2-2, which conveys the agricultural products forward. When the agricultural products are conveyed to the front port of the conveyor 2-2, the receiving hopper 2-3 fixed therein guides the agricultural products in. The front part of the receiving hopper 2-3 is inserted into the top surface of the steel structure support 2-5. Inside the outer shell 2-9, the sorting roller 2-8 is located. Driven by the reducer 2-7, the sorting roller 2-8 rotates. Its outer surface has multiple openings for fruits and vegetables to fall into, with the opening diameter gradually increasing from back to front. As the sorting roller 2-8 rotates, agricultural products of different sizes fall through openings of different diameters into the corresponding distribution port 2-4 at the bottom of the outer shell 2-9, achieving sorting by size. When it is necessary to adjust the size of the sorted agricultural products, the outer sleeve 3-4 in the sorting adjuster 3 is rotated. Because the inner sleeve 3-1 is embedded and fixed in the opening of the outer ring of the sorting roller 2-8, and the inner sleeve 3-1 has a groove on its inner wall for the outer sleeve 3-4 to rotate, the outer sleeve 3-4 can rotate relative to the inner sleeve. When the inner sleeve 3-1 rotates, the outer sleeve 3-4 rotates, causing the rotating disk 3-3 fixed on its top to rotate. Multiple arc-shaped grooves 3-6 arranged in a ring inside the rotating disk 3-3 cause the protrusions fixed on the upper surface of the fan-shaped blades 3-7 to slide within the arc-shaped grooves 3-6. At the same time, the protrusions fixed on the bottom surface of the fan-shaped blades 3-7 slide within the grooves on the upper surface of the base plate 3-2, causing the multiple fan-shaped blades 3-7 arranged in a ring to rotate. This expands or contracts the inner diameter of the inner sleeve 3-1, achieving the purpose of adjusting the sorting requirements of agricultural products of different sizes. The slots provided on the inner wall of the outer sleeve 3-4 are used for the tensioning ring 3-5 to engage. The tensioning ring 3-5 can tension and restrict the posture of the outer sleeve 3-4 to ensure stability after adjustment. This invention is not limited to the preferred embodiments described above. Anyone should understand that structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention. Finally, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this application, should still fall within the scope of the technical content disclosed in this application.

Claims

1. An adjustable agricultural product automatic washing and sorting device comprising a fruit and vegetable washing mechanism (1), characterized in that: The discharge port position of the fruit and vegetable cleaning mechanism (1) is horizontally and vertically connected with a fruit and vegetable sorting mechanism (2); wherein the fruit and vegetable cleaning mechanism (1) comprises a water tank (1-1), a plurality of net cylinders (1-5) rotating in a linear array at equal intervals in the inner cavity of the water tank (1-1), and a support (1-3) fixed on the left side of the water tank (1-1), and the top surface of the support (1-3) is provided with a belt type elevator (1-4) connected with the discharge port on the left side of the water tank (1-1); The fruit and vegetable sorting mechanism (2) comprises a support frame (2-1), a conveyor (2-2) fixed on the top surface of the support frame (2-1), and a steel structure support (2-5) fixed on the front side of the water tank (1-1), and the top surface of the steel structure support (2-5) is fixedly connected with an outer shell (2-9), and the inner part of the outer shell (2-9) is rotatably provided with a sorting drum (2-8); the front side port position of the conveyor (2-2) is fixedly connected with a receiving hopper (2-3) inserted into the inner cavity of the sorting drum (2-8), and the outer surface of the sorting drum (2-8) is provided with a plurality of openings for fruit and vegetable falling, and the inner part of each opening is provided with a sorting adjuster (3); The sorting adjuster (3) comprises an inner sleeve (3-1), a bottom disc (3-2) fixed in the inner cavity of the inner sleeve (3-1), and a rotating disc (3-3) rotatably connected to the upper surface of the bottom disc (3-2), a plurality of fan-shaped blades (3-7) arranged in a ring array are rotatably arranged between the bottom disc (3-2) and the rotating disc (3-3), the top of the rotating disc (3-3) is fixedly connected with an outer sleeve (3-4), and the inner part of the outer sleeve (3-4) is clamped with a tension ring (3-5).

2. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The bottom of the support (1-3) is fixedly connected with an aeration pump, and the conveying end of the aeration pump is connected with an aeration pipe penetrating into the inner cavity of the water tank (1-1), and the bottom surface of the water tank (1-1) is provided with sewage valves on the left and right sides.

3. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The side wall of the water tank (1-1) is fixedly connected with a driving motor, and the rear end of the net cylinder (1-5) penetrates through the water tank (1-1) and is fixed with a chain wheel, the output shaft of the driving motor is fixedly connected with one of the chain links, and the chain wheels are connected with a chain, and the rear surface of the water tank (1-1) is fixed with a protective shell (1-2) covering the chain wheels, the chain and the driving motor.

4. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The rear side of the conveyor (2-2) is located below the discharge port of the belt type elevator (1-4), and the bottom surface of the support frame (2-1) is fixedly connected with a variable frequency speed reduction motor for conveying power for the conveyor (2-2).

5. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The rear section of the receiving hopper (2-3) is fixed below the discharge port of the conveyor (2-2), and the front section of the receiving hopper (2-3) is inserted into the inner cavity of the sorting drum (2-8).

6. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The bottom of the outer shell (2-9) is provided with 3-5 openings, and each opening is respectively fixed with a distribution port (2-4).

7. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The openings on the outer ring of the sorting drum (2-8) for fruit and vegetable falling gradually increase in aperture from rear to front, for sorting different sizes of fruit and vegetable falling into the respective distribution ports (2-4).

8. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The front end of the sorting roller (2-8) penetrates through the shell (2-9) and is connected with the output shaft of the speed reducer (2-7).

9. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The inner sleeve (3-1) is embedded and fixed in the opening of the outer circle of the sorting roller (2-8), the inner cavity middle section side wall of the inner sleeve (3-1) is provided with a sliding groove for the rotation of the outer sleeve (3-4), and the inner cavity side wall of the outer sleeve (3-4) is provided with a clamping groove for clamping the tension ring (3-5) to limit the posture of the outer sleeve (3-4).

10. An adjustable automated produce cleaning and sorting apparatus according to claim 1, wherein: The inside of the rotating disc (3-3) is annularly arranged with a plurality of arc-shaped sliding grooves (3-6), the upper surface of each of the fan-shaped blades (3-7) is fixed with a protrusion sliding in the arc-shaped sliding groove (3-6), and the bottom surface of each of the fan-shaped blades (3-7) is fixed with a protrusion strip sliding with the groove on the upper surface of the bottom disc (3-2), so that the inner diameter of the inner sleeve (3-1) is expanded or reduced by rotating the fan-shaped blades (3-7), thereby adjusting the requirements of sorting different sizes of agricultural products.

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