Fruit post-harvest disinfection and conveying production line

Patent metadata

Field	Value
Publication number	US-12364272-B2
Application number	US-202519026675-A
Country	US
Kind code	B2
Filing date	Jan 17, 2025
Priority date	Apr 11, 2023
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A fruit post-harvest disinfection and conveying production line is provided. The production line solves the problem of waxberry type fruits, that is, due to the exposed flesh, it is necessary to minimize the time that water remains on the surface of the fruit during the spraying disinfection process. The fruit post-harvest disinfection and conveying production line includes a workbench, where the workbench is provided with multiple sets of conveyor belts; each set of conveyor belts includes a first conveyor belt and a second conveyor belt; an upper part of a front end of the conveyor belts is provided with an inclined feeding hopper; and the feeding hopper is provided with feeding ports corresponding to each set of conveyor belts.

First claim

The invention claimed is:

1. A fruit post-harvest disinfection and conveying production line, comprising a workbench, wherein the workbench is provided with a plurality of sets of longitudinally parallel conveyor belts; each set of conveyor belts comprises a first conveyor belt and a second conveyor belt; an upper part of a front end of the conveyor belts is provided with an inclined feeding hopper; the inclined feeding hopper is provided with feeding ports corresponding to each set of conveyor belts; a first nozzle and a second nozzle for spraying a disinfectant are longitudinally arranged in sequence at a back side of the inclined feeding hopper above a front part of each set of conveyor belts; a front side of the first nozzle is provided with an incoming material sensor; a discharge slope is provided below a back end of the conveyor belt; a back side of the discharge slope is provided with a tray rack; the tray rack is provided with a tray track; and a tray is fed from the tray track and aligned with a tail end of the discharge slope; wherein a plurality of first pulleys are longitudinally provided on each first conveyor belt; the first pulleys of adjacent first conveyor belts are aligned transversely, and all mutually aligned first pulleys are located on a same first rotating shaft; a plurality of second pulleys are longitudinally provided on each second conveyor belt; the second pulleys of adjacent second conveyor belts are aligned transversely, and all mutually aligned second pulleys are located on a same second rotating shaft; the first rotating shaft and the second rotating shaft are arranged parallel and staggered with each other; the first rotating shaft or the second rotating shaft is telescopic transversely; and alternatively, the first rotating shaft and the second rotating shaft both are telescopic transversely; there is a difference in conveying speeds of the first conveyor belt and the second conveyor belt, and the difference is less than or equal to 5% of an average speed of the first conveyor belt and the second conveyor belt.

2. The fruit post-harvest disinfection and conveying production line according to claim 1 , wherein the first rotating shaft and the second rotating shaft at a frontmost end of the conveyor belts are driving shafts.

3. The fruit post-harvest disinfection and conveying production line according to claim 2 , wherein there is a discharge gap greater than or equal to 10 cm between the first rotating shaft and the second rotating shaft at a backmost end; wherein a longitudinal spacing between a tail end of the first conveyor belt and a tail end of the second conveyor belt is greater than or equal to 10 cm; a fruit is discharged from a gap between the tail end of the first conveyor belt and the tail end of the second conveyor belt; and a surface of the workbench below the discharge gap is slanted to form the discharge slope, wherein the discharge slope comprises a higher front part and a lower back part.

4. The fruit post-harvest disinfection and conveying production line according to claim 2 , wherein the workbench is provided with a channel below the conveyor belts; a bottom surface of the channel is provided with a plurality of longitudinally distributed air extracting ports; and the plurality of longitudinally distributed air extracting ports are connected to an air extracting pump.

5. The fruit post-harvest disinfection and conveying production line according to claim 2 , wherein the workbench is provided with a channel-shaped cover plate above the conveyor belts; the first nozzle, the second nozzle, and the incoming material sensor are located on the channel-shaped cover plate; and a top surface of a back part of the channel-shaped cover plate is provided with a bar grille hollow.

6. The fruit post-harvest disinfection and conveying production line according to claim 2 , wherein the tray track of the tray rack is configured to feed the tray from back to front; a frontmost end of the tray track forms a discharge station aligned with the tail end of the discharge slope; the tray track adopts a two-track design; a lifting cylinder for lifting from bottom to top is provided below the discharge station and located between two tracks of the tray track; a top of a piston of the lifting cylinder is provided with a lifting platform; the lifting platform is provided with a weighing sensor; a vertical stacking bin is provided above the discharge station; two sides of a bottom of the vertical stacking bin are provided with latch bolts, wherein the latch bolts are symmetrically arranged on the tray rack and move unidirectionally from bottom to top; and four corners of the tray are provided with spacing posts for ensuring a spacing between upper and lower trays.

7. The fruit post-harvest disinfection and conveying production line according to claim 6 , wherein the latch bolt is an inverted L-shaped structure; a lower end of a vertical arm of the latch bolt is located on an elastic return rotating shaft; a horizontal arm of the latch bolt extends inward from an upper end of the vertical arm to support a bottom surface of the tray; and a limiting stopper is provided below the horizontal arm of the latch bolt.

8. The fruit post-harvest disinfection and conveying production line according to claim 6 , wherein front and back sides of the lifting platform are respectively provided with swinging stoppers, wherein the swinging stoppers extend upward and are higher than a top surface of the lifting platform; an upper end of the swinging stopper is allowed to swing unidirectionally towards an inner side of the lifting platform; and a height of the tray track exceeds the top surface of the lifting platform, but is lower than a top end of the swinging stopper.

9. The fruit post-harvest disinfection and conveying production line according to claim 1 , wherein there is a discharge gap greater than or equal to 10 cm between the first rotating shaft and the second rotating shaft at a backmost end; wherein a longitudinal spacing between a tail end of the first conveyor belt and a tail end of the second conveyor belt is greater than or equal to 10 cm; a fruit is discharged from a gap between the tail end of the first conveyor belt and the tail end of the second conveyor belt; and a surface of the workbench below the discharge gap is slanted to form the discharge slope, wherein the discharge slope comprises a higher front part and a lower back part.

10. The fruit post-harvest disinfection and conveying production line according to claim 1 , wherein the workbench is provided with a channel below the conveyor belts; a bottom surface of the channel is provided with a plurality of longitudinally distributed air extracting ports; and the plurality of longitudinally distributed air extracting ports are connected to an air extracting pump.

11. The fruit post-harvest disinfection and conveying production line according to claim 1 , wherein the workbench is provided with a channel-shaped cover plate above the conveyor belts; the first nozzle, the second nozzle, and the incoming material sensor are located on the channel-shaped cover plate; and a top surface of a back part of the channel-shaped cover plate is provided with a bar grille hollow.

12. The fruit post-harvest disinfection and conveying production line according to claim 1 , wherein the tray track of the tray rack is configured to feed the tray from back to front; a frontmost end of the tray track forms a discharge station aligned with the tail end of the discharge slope; the tray track adopts a two-track design; a lifting cylinder for lifting from bottom to top is provided below the discharge station and located between two tracks of the tray track;

Assignees

• Univ Zhejiang

Inventors

• Wu Di
• Zheng Dandan
• Yang Xiangzheng
• Sun Chongde
• Chen Kunsong

Classifications

• A23V2300/10

  Drying, dehydrating · CPC title

• A23B7/015

  Preserving by irradiation or electric treatment without heating effect · CPC title

• Y02P60/85

  Food storage or conservation, e.g. cooling or drying · CPC title

• B65G47/18

  Arrangements or applications of hoppers or chutes · CPC title

• B65G15/30

  Belts or like endless load-carriers (co-operating with rails or the like B65G21/22; {co-operating} with rollers B65G39/20) · CPC title