A screening frame body for lychee sorting

Abstract

The utility model relates to fruit sorting technical field discloses a kind of screening frame for lychee sorting, including support, the top of the support is fixedly connected with shell, the top of the support is provided with waste mechanism, the inside of shell is provided with screening mechanism, the screening mechanism is used to vibrate screen and divide different size lychee, the top of shell is provided with cleaning mechanism, the cleaning mechanism is used for cleaning inside device, the top right side of shell is provided with feeding mechanism, the left side bottom of shell is provided with discharge mechanism, the screening mechanism includes worm, the front and rear ends of the worm are rotatably connected in the inside of shell, the front end of the worm is fixedly connected with motor. In the utility model, the moving block on the worm in screening mechanism converts rotary motion into linear motion, realizes efficient and accurate lychee sorting, realizes that the vibration amplitude of screen different regions is consistent, improves the working efficiency and effect of screening.

Description

Technical Field

[0001] This utility model relates to the field of fruit sorting technology, and in particular to a screening frame for sorting lychees. Background Technology

[0002] Lychee sorting is a process of classifying and screening harvested lychees based on standards such as fruit size, color, maturity, quality, and sugar content, using both manual and mechanical methods. The aim is to accurately distinguish lychees into different grades to meet diverse market demands, enhance commodity value, and at the same time remove defective fruits to ensure the quality and taste of the products sold.

[0003] The sorting frame for lychees enables efficient grading of lychees. Through the different sizes of sieve holes and the slide structure on the frame, lychees can be quickly separated according to size and shape, replacing manual sorting and greatly improving sorting efficiency. It can distinguish between high-quality and defective fruits, ensure product quality uniformity, meet diverse market demands, reduce labor costs, and minimize fruit damage. It is an indispensable tool in the industrial sorting of lychees.

[0004] The screening frame used for lychee sorting has limitations in adjusting the sieve apertures during the screening process, making it difficult to quickly adapt to the grading requirements of lychees of different sizes. In existing technologies, a modular sieve structure with quick switching is used, which allows for rapid replacement of sieves with different aperture sizes through standardized interfaces, improving the efficiency of sieve aperture adjustment and enhancing the versatility of the equipment. However, in actual use, the vibration uniformity of the sieve is insufficient, and the vibration amplitude varies in different areas of the sieve. This causes the movement trajectory of lychees to be unstable during the screening process, resulting in sorting errors, affecting the grading accuracy, and reducing the efficiency and effectiveness of the screening work. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a screening frame for sorting lychees, aiming to improve the problem that the vibration uniformity of the screen is insufficient in the existing technology, the vibration amplitude of different areas of the screen is different, which leads to the unstable movement trajectory of lychees during the screening process, causing sorting errors, affecting the grading accuracy, and reducing the efficiency and effect of screening.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a screening frame for sorting lychees, including a support frame, a shell fixedly connected to the top of the support frame, a waste disposal mechanism provided on the top of the support frame, a screening mechanism provided on the inner side of the shell, the screening mechanism being used for vibrating screening of lychees of different sizes, a cleaning mechanism provided on the top of the shell, the cleaning mechanism being used for cleaning the inside of the device, a feeding mechanism provided on the top right side of the shell, and a discharging mechanism provided on the bottom left side of the shell;

[0007] The screening mechanism includes a worm gear, the front and rear ends of which are rotatably connected to the inner side of the housing. A motor is fixedly connected to the front end of the worm gear, and a moving block is threadedly connected to the outer wall of the worm gear. A multi-layer screen frame is fixedly connected to the left side of the moving block, and a rotating block is fixedly connected to the bottom left side of the multi-layer screen frame. A rotating shaft is rotatably connected to the inner side of the rotating block, and lifting components are provided at both the front and rear ends of the rotating shaft. A screening component is provided on the inner side of the multi-layer screen frame.

[0008] As a further description of the above technical solution:

[0009] The cleaning mechanism includes a water tank, the bottom of which is fixedly connected to the top of the outer casing. A water pump is fixedly connected to the top of the water tank, and a valve is fixedly connected to the top of the outer casing. A pipe is connected to the left side of the water pump, and a spray assembly is provided at the bottom of the valve.

[0010] As a further description of the above technical solution:

[0011] The sieving assembly includes multiple sieve plates, the outer walls of which are fixedly connected to the inner side of the multi-layer sieve frame, and multiple sieve holes are opened on the top of each of the multiple sieve plates.

[0012] As a further description of the above technical solution:

[0013] The lifting assembly includes two rotating seats, which are rotatably connected to the front and rear ends of a rotating shaft, and hydraulic rods are fixedly connected to the bottom of each rotating seat.

[0014] As a further description of the above technical solution:

[0015] The spray assembly includes a rotating disk, the top of which is fixedly connected to the bottom of a valve, and a spray head is fixedly connected to the bottom of the rotating disk.

[0016] As a further description of the above technical solution:

[0017] The waste disposal mechanism includes a collection channel, the top of which is fixedly connected to the bottom of the housing, and a waste bin is fixedly connected to the top inner side of the support.

[0018] As a further description of the above technical solution:

[0019] The feeding mechanism includes a feeding slide, the right side of which is fixedly connected to the top right end of the inner side of the housing, and a feeding port is provided on the top right side of the housing.

[0020] As a further description of the above technical solution:

[0021] The discharge mechanism includes a discharge slide, the left and right sides of which are fixedly connected to the bottom left end of the outer casing, and two partitions are fixedly connected to the bottom inner side of the discharge slide.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the motor drives the worm gear in the screening mechanism to reciprocate and rotate, providing power for screening. The moving block threaded on the worm gear converts the rotational motion into linear motion, driving the multi-layer screen frame to vibrate, thereby achieving efficient and precise lychee sorting, ensuring uniform vibration of the screen, achieving consistent vibration amplitude in different areas of the screen, stabilizing the movement trajectory of lychees during screening, avoiding sorting errors, effectively ensuring grading accuracy, and improving screening efficiency and effect.

[0024] 2. In this utility model, the water tank stores cleaning liquid and disinfectant water, providing a cleaning water source and disinfection medium for the device. The cleaning mechanism is installed by a fixed connection to the top of the outer shell. The water pump at the top of the water tank pumps the liquid, which is then transported to the valve through a pipeline. The valve controls the flow of the liquid. The spray assembly at the bottom of the valve sprays the liquid at high pressure through the nozzle. At the same time, the rotating disc drives the nozzle to rotate, expanding the spray range and improving the cleaning coverage area and uniformity, thereby achieving cleaning and disinfection of the inside of the device and ensuring the hygiene and safety of the lychee sorting environment. Attached Figure Description

[0025] Figure 1 This is a perspective view of a screening frame for sorting lychees according to the present invention.

[0026] Figure 2 This is a front view of a screening frame for sorting lychees according to the present invention;

[0027] Figure 3 This is a schematic diagram of the waste mechanism in a screening frame for sorting lychees according to the present invention.

[0028] Figure 4 This is a cross-sectional view of the outer shell of a screening frame for sorting lychees according to the present invention.

[0029] Figure 5 This is a split view of the moving block in a screening frame for sorting lychees according to the present invention.

[0030] Figure 6 This is a schematic diagram of the cleaning mechanism in a screening frame for sorting lychees, as proposed in this utility model.

[0031] Legend:

[0032] 1. Support frame; 2. Outer shell; 3. Screening mechanism; 301. Worm gear; 302. Motor; 303. Moving block; 304. Multi-layer screen frame; 305. Rotating block; 306. Rotating shaft; 307. Screening assembly; 3071. Screen plate; 3072. Screen hole; 308. Lifting assembly; 3081. Rotary seat; 3082. Hydraulic rod; 4. Cleaning mechanism; 401. Water tank; 402. Water pump; 403. Valve; 404. Pipeline; 405. Spray assembly; 4051. Rotary disc; 4052. Spray head; 5. Waste disposal mechanism; 501. Collection channel; 502. Waste bin; 6. Feeding mechanism; 601. Feed chute; 602. Feed inlet; 7. Discharge mechanism; 701. Discharge chute; 702. Partition plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 4 and Figure 5 An embodiment of this utility model provides a screening frame for sorting lychees, including a support 1 for supporting the entire device. The top of the support 1 is fixedly connected to a shell 2, which is the surface of the screening device. A waste collection mechanism 5 is provided on the top of the support 1 for collecting wastewater and waste fruit generated during screening. A screening mechanism 3 is provided on the inner side of the shell 2 for vibrating and screening lychees of different sizes. A cleaning mechanism 4 is provided on the top of the shell 2 for cleaning the inside of the device. A feeding mechanism 6 is provided on the top right side of the shell 2 for feeding lychees into the screening device. A discharge mechanism 7 is provided on the bottom left side of the shell 2 for discharging the screened lychees.

[0035] The screening mechanism 3 includes a worm gear 301, with both ends of the worm gear 301 rotatably connected to the inner side of the outer casing 2. Both the front and rear ends of the worm gear 301 are rotatably connected to the inner side of the outer casing 2. A motor 302 is fixedly connected to the front end of the worm gear 301, driving the worm gear 301 to reciprocate and achieve a vibration effect. A moving block 303 is threadedly connected to the outer wall of the worm gear 301, moving along the worm gear 301 back and forth under the drive of its reciprocating rotation. A multi-layer screen frame 304 is fixedly connected to the left side of the movable block 303. The inner side of the multi-layer screen frame 304 is hollow and used to install different screen plates 3071. A rotating block 305 is fixedly connected to the bottom left side of the multi-layer screen frame 304. The inner side of the rotating block 305 is hollow. A rotating shaft 306 is rotatably connected to the inner side of the rotating block 305. The rotating shaft 306 can rotate inside the rotating block 305. Lifting components 308 are provided at both the front and rear ends of the rotating shaft 306. The lifting components 308 are connected to the rotating shaft 306 via the rotating shaft 3071. 06 and the rotating block 305 raise and lower the multi-layer screen frame 304. The lifting assembly 308 includes two rotating seats 3081, which are rotatably connected to the front and rear ends of the rotating shaft 306. Hydraulic rods 3082 are fixedly connected to the bottom of each of the two rotating seats 3081. When the hydraulic rods 3082 extend, they push the multi-layer screen frame 304 back to its original position. When the hydraulic rods 3082 retract, the left side of the multi-layer screen frame 304 is lowered, thereby tilting the lychees inside. The inner side of the multi-layer sieve frame 304 is provided with a sieving component 307. The sieving component 307 is used to screen out lychees in layers. The sieving component 307 includes multiple sieve plates 3071. The sieve plates 3071 can be installed inside the multi-layer sieve frame 304. The outer walls of the multiple sieve plates 3071 are all fixedly connected to the inner side of the multi-layer sieve frame 304. Multiple sieve holes 3072 are opened on the top of the multiple sieve plates 3071. Lychees of different sizes are screened out by sieve holes 3072 of different sizes.

[0036] Specifically, support frame 1 supports the entire device, providing a stable foundation for the screening frame. The top of support frame 1 is fixedly connected to the outer shell 2, which forms the surface of the screening device, creating a screening space and protecting the internal mechanisms. A waste collection mechanism 5 is installed on the top of support frame 1 to collect wastewater and waste fruit generated during screening, keeping the device clean and facilitating centralized waste disposal. A screening mechanism 3 is installed inside the outer shell 2, used for vibrating screening of lychees of different sizes, enabling lychee grading by size. A cleaning mechanism 4 is installed on the top of the outer shell 2 for cleaning the inside of the device, ensuring hygienic conditions before and after screening. A feeding mechanism 6 is installed on the top right side of the outer shell 2, used to feed lychees into the screening device, providing a channel for lychee input. The left side of the outer shell 2... A discharge mechanism 7 is provided at the bottom to discharge the screened lychees, realizing the output of graded lychees. The screening mechanism 3 includes a worm gear 301, both ends of which are rotatably connected to the inner side of the outer shell 2, providing a transmission basis for screening vibration. The front and rear ends of the worm gear 301 are rotatably connected to the inner side of the outer shell 2. A motor 302 is fixedly connected to the front end of the worm gear 301, driving the worm gear 301 to reciprocate and achieve a vibration effect, providing a power source for the screening process. A moving block 303 is threadedly connected to the outer wall of the worm gear 301. Driven by the reciprocating rotation of the worm gear 301, the moving block 303 moves back and forth along the worm gear 301, converting the rotational motion of the worm gear 301 into linear motion. A multi-layer screen frame 304 is fixedly connected to the left side of the moving block 303. The inner side is hollow and used for... Different screen plates 3071 are installed to form a multi-layer screening space. A rotating block 305 is fixedly connected to the bottom left side of the multi-layer screen frame 304. The inner side is hollow to provide rotational installation space for the rotating shaft 306. The rotating shaft 306 is rotatably connected to the inner side of the rotating block 305 and can rotate inside the rotating block 305, serving as the rotation fulcrum of the lifting component 308. Lifting components 308 are provided at both the front and rear ends of the rotating shaft 306. The multi-layer screen frame 304 is raised and lowered by the rotating shaft 306 and the rotating block 305 to realize the tilting and resetting operation of the screen frame. The lifting component 308 includes two rotating seats 3081. The two rotating seats 3081 are rotatably connected to the front and rear ends of the rotating shaft 306. Hydraulic rods 308 are fixedly connected to the bottom of the two rotating seats 3081. 2. When extended, the multi-layer sieve frame 304 is pushed back to its original position. When shortened, the left side of the multi-layer sieve frame 304 is lowered, thereby pouring out the lychees inside. The sieve frame angle is adjusted by hydraulic drive. The inner side of the multi-layer sieve frame 304 is provided with a sieving component 307 for sieving out lychees in layers to achieve lychee size grading. The sieving component 307 includes multiple sieve plates 3071, which can be installed inside the multi-layer sieve frame 304 to provide sieving interfaces of different sizes. The outer walls of the multiple sieve plates 3071 are all fixedly connected to the inner side of the multi-layer sieve frame 304. Multiple sieve holes 3072 are opened on the top of the multiple sieve plates 3071. Lychees of different sizes are sieved out by the different sizes of sieve holes 3072. Lychee grading and screening are achieved by the difference in sieve hole size 3072.

[0037] Reference Figure 1 , Figure 2 and Figure 6 The cleaning mechanism 4 includes a water tank 401, which stores liquid and disinfectant in the cleaning device. The bottom of the water tank 401 is fixedly connected to the top of the outer shell 2. A water pump 402 is fixedly connected to the top of the water tank 401. The water pump 402 is used to pump liquid. A valve 403 is fixedly connected to the top of the outer shell 2. When the valve 403 is opened, the inside of the device is cleaned. A pipe 404 is connected to the left side of the water pump 402. The pipe 404 connects the water pump 402 and the valve 403. A spray assembly 405 is provided at the bottom of the valve 403. The spray assembly 405 is used to spray and rinse the inside of the device. The spray assembly 405 includes a rotating disk 4051. When the rotating disk 4051 rotates, it expands the spray range of the nozzle 4052. The top of the rotating disk 4051 is fixedly connected to the bottom of the valve 403. A nozzle 4052 is fixedly connected to the bottom of the rotating disk 4051. The nozzle 4052 sprays liquid at high pressure.

[0038] Specifically, water tank 401 stores the liquid and disinfectant in the cleaning device, providing a water source and disinfection medium for cleaning. The bottom of water tank 401 is fixedly connected to the top of outer shell 2, enabling the cleaning mechanism 4 to be fixedly installed with outer shell 2. Water pump 402 is fixedly connected to the top of water tank 401 for pumping liquid and providing power support for the cleaning process. Valve 403 is fixedly connected to the top of outer shell 2; opening it cleans the inside of the device and controls the flow of cleaning liquid. Pipeline 404 is connected to the left side of water pump 402. A liquid delivery channel is formed by connecting the water pump 402 and the valve 403. A spray assembly 405 is provided at the bottom of the valve 403 for spraying and rinsing the internal parts of the device to achieve the cleaning function. The spray assembly 405 includes a rotating disk 4051, which expands the spray range of the nozzle 4052 when rotating, thereby improving the cleaning coverage area and uniformity. The top of the rotating disk 4051 is fixedly connected to the bottom of the valve 403, and the nozzle 4052 is fixedly connected to the bottom of the rotating disk 4051. High-pressure liquid spray enhances the cleaning effect.

[0039] Reference Figure 4 , Figure 5 and Figure 6The sieving assembly 307 includes multiple sieve plates 3071, which can be installed inside the multi-layer sieve frame 304. The outer walls of the multiple sieve plates 3071 are all fixedly connected to the inner walls of the multi-layer sieve frame 304. Multiple sieve holes 3072 are opened on the top of the multiple sieve plates 3071. Different sized sieve holes 3072 screen out lychees of different sizes. The lifting assembly 308 includes two rotating seats 3081. The two rotating seats 3081 are rotatably connected to the front and rear ends of the rotating shaft 306. The bottoms of the two rotating seats 3081 are fixed. A hydraulic rod 3082 is fixedly connected. When the hydraulic rod 3082 extends, it pushes the multi-layer screen frame 304 back to its original position. When the hydraulic rod 3082 shortens, the left side of the multi-layer screen frame 304 lowers, thereby pouring out the lychees inside. The spray assembly 405 includes a rotating disk 4051. When the rotating disk 4051 rotates, it expands the spraying range of the nozzle 4052. The top of the rotating disk 4051 is fixedly connected to the bottom of the valve 403. The bottom of the rotating disk 4051 is fixedly connected to the nozzle 4052, which sprays liquid under high pressure.

[0040] Specifically, the two rotating seats 3081 are rotatably connected to the front and rear ends of the rotating shaft 306. Hydraulic rods 3082 are fixedly connected to the bottom of each rotating seat 3081. When extended, they push the multi-layer screen frame 304 back to its original position; when shortened, the left side of the multi-layer screen frame 304 lowers, thus tilting out the lychees inside. The screen frame angle is adjusted hydraulically. The sieving assembly 307 is used to screen out lychees in layers, achieving lychee size grading. The sieving assembly 307 includes multiple screen plates 3071, which can be installed inside the multi-layer screen frame 304, providing screening interfaces of different sizes. The outer walls of multiple sieve plates 3071 are fixedly connected to the inner side of the multi-layer sieve frame 304. Multiple sieve holes 3072 are opened on the top of the multiple sieve plates 3071. Different sized sieve holes 3072 screen out lychees of different sizes. The lychee grading and screening are achieved by the size difference of the sieve holes 3072. When the rotating disk 4051 rotates, it expands the spraying range of the nozzle 4052, improves the cleaning coverage area and uniformity. The top of the rotating disk 4051 is fixedly connected to the bottom of the valve 403, and the bottom of the rotating disk 4051 is fixedly connected to the nozzle 4052. The high-pressure spray of liquid enhances the cleaning effect.

[0041] Reference Figure 3 and Figure 4The waste collection mechanism 5 includes a collection channel 501, which collects waste liquid and residue falling from the top. The top of the collection channel 501 is fixedly connected to the bottom of the outer casing 2. A waste bin 502 is fixedly connected to the top inner side of the support 1. The top of the waste bin 502 receives the aggregated waste liquid and residue from the collection channel 501. The feeding mechanism 6 includes a feeding chute 601, which conveys the lychees to the top of the multi-layer screen frame 304. The right side of the feeding chute 601 is fixedly connected to... The upper right side of the inner side of the outer shell 2 is connected to the inlet 602, which allows the lychees to enter the screening device. The discharge mechanism 7 includes a discharge slide 701, from which the lychees are discharged. The left and right sides of the discharge slide 701 are fixedly connected to the bottom left side of the outer shell 2. Two partitions 702 are fixedly connected to the bottom inner side of the discharge slide 701. The partitions 702 are used to separate the lychees of different sizes at the top of the discharge slide 701.

[0042] Specifically, the collection channel 501 collects the waste liquid and residue falling from the top, guiding the waste to the collection location. The top of the collection channel 501 is fixedly connected to the bottom of the outer shell 2, connecting with the outer shell 2 and ensuring the waste falls smoothly. A waste bin 502 is fixedly connected to the top inner side of the support 1, receiving the waste liquid and residue collected by the collection channel 501 for centralized storage of waste for subsequent processing. The feeding mechanism 6 includes a feeding chute 601, which transports the lychees to the top of the multi-layer screen frame 304, providing a transmission path for the lychees from the outside to the screening mechanism 3. The right side of the feeding chute 601 is fixedly connected to the inner side of the outer shell 2. At the top right end, the feeding mechanism 6 is fixedly assembled with the outer shell 2. The top right side of the outer shell 2 has a feeding port 602, which allows lychees to enter the screening device and serves as the inlet for lychee input. The discharging mechanism 7 includes a discharging chute 701, from which lychees are discharged, forming an output channel for the screened lychees. The left and right sides of the discharging chute 701 are fixedly connected to the bottom left end of the outer shell 2, achieving a stable connection between the discharging mechanism 7 and the outer shell 2. Two partitions 702 are fixedly connected to the bottom inner side of the discharging chute 701 to separate lychees of different sizes at the top of the discharging chute 701, thereby achieving the classified output of graded lychees through partitioning.

[0043] Working principle: Lychees are fed into the feeding mechanism 6 through the feed port 602. The lychees slide down the feeding slide 601 to the top of the multi-layer screen frame 304 of the screening mechanism 3. Then, the motor 302 of the screening mechanism 3 is started. The motor 302 drives the worm gear 301 to rotate back and forth, which drives the moving block 303 to move back and forth along the worm gear 301, causing the multi-layer screen frame 304 to vibrate. The screen plate 3071 of the screening component 307 inside the multi-layer screen frame 304 is provided with screen holes 3072 of different sizes. During the vibration, lychees of different sizes are graded and screened by passing through the corresponding screen holes 3072. After screening, the hydraulic rod 3082 of the lifting component 308 is shortened. The hydraulic rod 3082 lowers the left side of the multi-layer screen frame 304 through the rotating seat 3081 and the rotating shaft 306, and pours the graded lychees into the discharge mechanism 7. On the discharge chute 701, the partition 702 at the bottom inner side of the discharge chute 701 separates lychees of different sizes, achieving classified output. Wastewater and waste fruit generated during the screening process fall into the waste bin 502 on the inner side of the top of the support 1 through the collection channel 501 at the bottom of the outer shell 2 for collection. When it is necessary to clean the screening frame, the valve 403 of the cleaning mechanism 4 is opened, and the water pump 402 at the top of the water tank 401 pumps the liquid and disinfectant in the water tank 401 out through the pipe 404. The liquid reaches the spray assembly 405 through the valve 403, and the nozzle 4052 sprays the liquid at high pressure. At the same time, the rotating disk 4051 drives the nozzle 4052 to rotate, expanding the spray range and spraying and rinsing the inside of the device. This realizes the automated grading and screening of lychees, ensuring the efficiency and hygiene of the screening work.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screening frame for sorting lychees, comprising a support (1), characterized in that: The top of the support (1) is fixedly connected to the outer shell (2), the top of the support (1) is provided with a waste disposal mechanism (5), the inner side of the outer shell (2) is provided with a screening mechanism (3), the screening mechanism (3) is used to vibrate and screen lychees of different sizes, the top of the outer shell (2) is provided with a cleaning mechanism (4), the cleaning mechanism (4) is used for cleaning the inside of the device, the top right side of the outer shell (2) is provided with a feeding mechanism (6), and the bottom left side of the outer shell (2) is provided with a discharge mechanism (7). The screening mechanism (3) includes a worm gear (301), the front and rear ends of which are rotatably connected to the inner side of the outer shell (2). A motor (302) is fixedly connected to the front end of the worm gear (301). A moving block (303) is threadedly connected to the outer wall of the worm gear (301). A multi-layer screen frame (304) is fixedly connected to the left side of the moving block (303). A rotating block (305) is fixedly connected to the bottom left side of the multi-layer screen frame (304). A rotating shaft (306) is rotatably connected to the inner side of the rotating block (305). Lifting components (308) are provided at both the front and rear ends of the rotating shaft (306). A screening component (307) is provided on the inner side of the multi-layer screen frame (304).

2. The screening frame for sorting lychees according to claim 1, characterized in that: The cleaning mechanism (4) includes a water tank (401), the bottom of which is fixedly connected to the top of the outer shell (2), a water pump (402) is fixedly connected to the top of the water tank (401), a valve (403) is fixedly connected to the top of the outer shell (2), a pipe (404) is connected to the left side of the water pump (402), and a spray assembly (405) is provided at the bottom of the valve (403).

3. The screening frame for sorting lychees according to claim 1, characterized in that: The sieving assembly (307) includes multiple sieve plates (3071), the outer walls of which are fixedly connected to the inner side of the multi-layer sieve frame (304), and multiple sieve holes (3072) are opened on the top of each of the multiple sieve plates (3071).

4. The screening frame for sorting lychees according to claim 1, characterized in that: The lifting assembly (308) includes two rotating seats (3081), which are rotatably connected to the front and rear ends of the rotating shaft (306) and the bottom of each of the two rotating seats (3081) is fixedly connected to a hydraulic rod (3082).

5. A screening frame for sorting lychees according to claim 2, characterized in that: The spray assembly (405) includes a rotating disk (4051), the top of which is fixedly connected to the bottom of the valve (403), and a nozzle (4052) is fixedly connected to the bottom of the rotating disk (4051).

6. A screening frame for sorting lychees according to claim 1, characterized in that: The waste collection mechanism (5) includes a collection channel (501), the top of which is fixedly connected to the bottom of the outer shell (2), and a waste bin (502) is fixedly connected to the top inner side of the support (1).

7. A screening frame for sorting lychees according to claim 1, characterized in that: The feeding mechanism (6) includes a feeding slide (601), the right side of which is fixedly connected to the top right end of the inner side of the outer shell (2), and a feeding port (602) is provided on the top right side of the outer shell (2).

8. A screening frame for sorting lychees according to claim 1, characterized in that: The discharge mechanism (7) includes a discharge slide (701), the left and right sides of which are fixedly connected to the bottom left end of the outer shell (2), and two partitions (702) are fixedly connected to the bottom inner side of the discharge slide (701).

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