Foreign matter detection equipment for dried longan production

By designing a foreign object detection device that includes a metal detector, a push plate, and a slide plate, the device automatically identifies and collects metallic foreign objects in dried longan, solving the problem of low detection efficiency in existing technologies and improving production efficiency and the continuity of equipment operation.

CN224052183UActive Publication Date: 2026-03-27GAOZHOU FENGSHENG FOOD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

In existing technologies, the detection efficiency of metal foreign objects during the production of dried longan is low, especially for small foreign objects, which are difficult to select quickly, causing the conveyor belt to stop frequently and reducing production efficiency.

Method used

Design a foreign object detection device that uses a metal detector, push plate, and slide plate in conjunction with a linear motor to automatically push dried longan containing metal foreign objects into a collection box. The start and stop of the conveyor belt are controlled by a controller to improve the efficiency of foreign object selection.

Benefits of technology

It enables rapid identification and collection of metallic foreign objects in dried longan, reduces conveyor belt downtime, improves production efficiency, and reduces the difficulty for workers in selecting them.

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Abstract

The utility model relates to foreign matter detection equipment for dried longan production, which comprises a frame and a first conveyor belt mounted on the frame, a push plate and a slide plate are respectively arranged on two opposite sides of the first conveyor belt, a metal detector positioned right above the first conveyor belt is arranged between the push plate and the slide plate, a second conveyor belt is arranged below the slide plate, and the second conveyor belt is arranged below the slide plate. A plurality of collecting boxes distributed at equal intervals are placed on the second conveying belt, one collecting box is located under the end, away from the first conveying belt, of the sliding plate, a driving unit used for driving the push plate to move in the direction close to or away from the sliding plate is arranged on the rack, and a controller is arranged in the rack. The first conveying belt, the second conveying belt, the metal detector and the driving unit are all electrically connected with the controller; when the metal detector detects that dried longans on the first conveyor belt contain metal foreign matters, the push plate pushes the dried longans containing the metal foreign matters into the collection box, so that the stop time of the first conveyor belt is shortened, and the metal detection efficiency is further improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a production technology field of longan, specifically relates to a foreign matter detection equipment for longan dry production. BACKGROUND

[0002] In the processing and production process of longan dry, metal foreign matters are easily mixed in longan dry, these metal foreign matters not only can affect the quality and taste of products, but also can constitute a serious threat to the health of consumers, so that longan dry needs to be detected for metal before being packed.

[0003] At present, the way for detecting longan dry for metal is that longan dry is placed on a conveying belt, longan dry moves along with the conveying belt and passes through a metal detector above the conveying belt, when the metal detector detects metal, the conveying belt stops running, workers pick longan dry containing metal foreign matters on the conveying belt, after the metal foreign matters are picked out, the conveying belt is restarted to run, however, in the process of picking longan dry containing metal foreign matters, some relatively small metal foreign matters are buried deep, so that workers take more time to pick out the metal foreign matters, increase the time of stopping the conveying belt, and thus reduce the metal detection efficiency of longan dry. UTILITARY MODEL

[0004] The utility model aims at designing a foreign matter detection equipment for longan dry production, which can solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A foreign matter detection equipment for longan dry production, including frame and first conveying belt installed on the frame, the opposite sides of the first conveying belt are respectively provided with push plate and sliding plate, the metal detector is located above the first conveying belt between the push plate and the sliding plate, the second conveying belt is arranged below the sliding plate, a plurality of equidistantly distributed collecting boxes are arranged on the second conveying belt, one of the collecting boxes is located below the sliding plate away from the first conveying belt, the driving unit for driving the push plate to move towards or away from the sliding plate is arranged on the frame, the controller is arranged in the frame, the first conveying belt, the second conveying belt, the metal detector and the driving unit are electrically connected with the controller.

[0007] Further, the driving unit is a linear motor, the push plate is fixedly connected with the mover of the linear motor.

[0008] Further, two support plates are fixedly connected on the frame, the two support plates are oppositely arranged relative to the first conveying belt, and the side of the two support plates facing each other is provided with a through hole, the push plate is located in one of the through holes, and one end of the sliding plate is fixedly connected with the other end of the through hole away from the first conveying belt.

[0009] Further, the top of the two support plates is fixedly connected with a horizontal plate, and the metal detector is installed at the bottom of the horizontal plate.

[0010] Further, the driving unit is installed between the two support plates.

[0011] Further, the opposite sides of the first conveying belt are provided with first baffles, and the first baffles are fixed on the frame.

[0012] Further, the second conveying belt is provided with a plurality of box grooves distributed at equal intervals, and the collection box is placed in the box groove.

[0013] Further, the opposite sides of the sliding plate are fixedly connected with second baffles.

[0014] The beneficial effects of the present application are as follows:

[0015] When the metal detector detects that the dried longan on the first conveying belt contains metal foreign matter, the controller controls the first conveying belt to stop and controls the driving unit to start, the driving unit drives the push plate to move towards the sliding plate, the push plate pushes the dried longan containing metal foreign matter into the sliding plate, and the dried longan falls into the collection box directly below the sliding plate, after the push plate moves away from the sliding plate and returns to the initial position, the first conveying belt is restarted and runs, the time of stopping the first conveying belt is reduced, and the metal detection efficiency of the dried longan is improved.

[0016] When the first conveying belt is restarted, the controller controls the second conveying belt to start, so that the next empty collection box on the second conveying belt moves to the position directly below the sliding plate, and then the second conveying belt stops running, by arranging a plurality of collection boxes to collect the dried longan falling from the sliding plate each time, the accumulation of dried longan can be avoided, and the difficulty of workers picking out metal foreign matter is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0018] Figure 1 is a structural schematic view of the utility model;

[0019] Figure 2 is a structural schematic view of another view of the utility model;

[0020] Figure 3 is a sectional view of the utility model.

[0021] The names of the components marked in the figure are as follows:

[0022] 1, frame; 2, first conveying belt; 3, push plate; 4, sliding plate; 5, metal detector; 6, second conveying belt; 7, collecting box; 8, linear motor; 9, support plate; 10, through hole; 11, cross plate; 12, first baffle; 13, box groove; 14, second baffle. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific implementation, structure, features and effects according to the utility model are described in detail as follows by combining with the drawings and preferred embodiments.

[0024] For example, Figures 1-3As shown, a foreign object detection device for dried longan production includes a frame 1 and a first conveyor belt 2 mounted on the frame 1. Two support plates 9 are fixedly connected to the frame 1, and the two support plates 9 are arranged opposite to the first conveyor belt 2. Each of the two support plates 9 has a through hole 10 on its facing side. One of the through holes 10 has a push plate 3 installed in it to prevent the push plate 3 from colliding with the dried longan on the first conveyor belt 2. The other through hole 10 is fixedly connected to a slide plate 4 at the end away from the first conveyor belt 2, allowing the dried longan to slide down. A horizontal plate 11 is fixedly connected between the tops of the two support plates 9. A metal detector 5 is installed at the bottom of the horizontal plate 11, located directly above the first conveyor belt 2. When the dried longan passes directly below the metal detector 5 with the first conveyor belt 2, the metal detector 5 can detect metal in the dried longan. A second conveyor belt 6 is located below the slide plate 4, and the second conveyor belt 6 has several equidistantly distributed box slots 13. A collection box 7 is placed, one of which is located directly below the end of the slide plate 4 furthest from the first conveyor belt 2. The collection box 7 collects the dried longan that slides down from the slide plate 4. A linear motor 8 is installed between the two support plates 9. The push plate 3 is fixedly connected to the mover of the linear motor 8 and is used to drive the push plate 3 to move closer to or away from the slide plate 4. A controller is installed inside the frame 1. The first conveyor belt 2, the second conveyor belt 6, the metal detector 5, and the linear motor 8 are all electrically connected to the controller. The metal detector 5 transmits the signal of detected metal to the controller. The controller responds to the received signal and controls the start or stop of the first conveyor belt 2, the second conveyor belt 6, and the linear motor 8. First baffles 12 are provided on both sides of the first conveyor belt 2 to prevent the longan pulp from falling from the edge of the first conveyor belt 2. The first baffles 12 are fixed to the frame 1. Second baffles 14 are fixedly connected to both sides of the slide plate 4 to prevent the longan pulp from falling from the edge of the slide plate 4.

[0025] Working principle:

[0026] like Figure 1 and 2 As shown, when the foreign object detection device is in use, the dried longan to be detected is placed on the first conveyor belt 2. The dried longan will move with the first conveyor belt 2 and pass the metal detector 5 directly above the first conveyor belt 2. When the metal detector 5 detects that the dried longan contains a metal foreign object, it will transmit a signal to the controller. The controller will then control the first conveyor belt 2 to stop and control the linear motor 8 to start. The linear motor 8 will drive the push plate 3 to move closer to the slide plate 4. The push plate 3 will push the dried longan containing the metal foreign object into the slide plate 4. The dried longan will fall down the slide plate 4 into the collection box 7 directly below it. After the push plate 3 moves away from the slide plate and returns to the initial position, the controller will control the first conveyor belt 2 to restart and run, reducing the stopping time of the first conveyor belt 2 and thus improving the metal detection efficiency of the dried longan.

[0027] At the same time of the first conveying belt 2 restarting, the controller controls the second conveying belt 6 to start, and after the next empty collecting box 7 on the second conveying belt 6 moves to the directly below of the slide plate 4, the controller controls the second conveying belt 6 to stop running, through setting a plurality of collecting boxes 7 to collect the dried longan fallen from the slide plate 4 each time, the dried longan can be avoided from piling up, and the difficulty of workers picking out the metal foreign matters is reduced.

[0028] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments, which is based on the technical essence of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A foreign matter detection device for producing dried longan, comprising a frame (1) and a first conveyor belt (2) installed on the frame (1), characterized in that, The first conveying belt (2) is provided with a push plate (3) and a sliding plate (4) on opposite sides, respectively, and a metal detector (5) is arranged between the push plate (3) and the sliding plate (4) above the first conveying belt (2), a second conveying belt (6) is arranged below the sliding plate (4), and a plurality of collecting boxes (7) are arranged on the second conveying belt (6) at equal intervals, one of the collecting boxes (7) is arranged directly below the end of the sliding plate (4) away from the first conveying belt (2), a driving unit is arranged on the rack (1) to drive the push plate (3) to move towards or away from the sliding plate (4), a controller is arranged inside the rack (1), and the first conveying belt (2), the second conveying belt (6), the metal detector (5) and the driving unit are electrically connected to the controller.

2. The foreign object detection apparatus for production of girein dried fruit according to claim 1, characterized by, The driving unit is a linear motor (8), and the push plate (3) is fixedly connected to the mover of the linear motor (8).

3. The foreign object detecting apparatus for production of girein dried fruit according to claim 1, characterized in that, Two support plates (9) are fixedly connected to the rack (1), the two support plates (9) are arranged opposite to each other with respect to the first conveying belt (2), and the side of each of the two support plates (9) facing each other is provided with a through hole (10), the push plate (3) is arranged in one of the through holes (10), and one end of the sliding plate (4) is fixedly connected to the end of the other through hole (10) away from the first conveying belt (2).

4. The foreign object detection apparatus for production of gac fruit according to claim 3, characterized by The top portions of the two support plates (9) are fixedly connected with a horizontal plate (11), and the metal detector (5) is arranged at the bottom of the horizontal plate (11).

5. The foreign object detection apparatus for production of gac fruit according to claim 3, wherein The driving unit is arranged between the two support plates (9).

6. The foreign object detecting apparatus for production of girein dried fruit according to claim 1, wherein The first conveying belt (2) is provided with a first baffle (12) on opposite sides, respectively, and the first baffle (12) is fixed to the rack (1).

7. The foreign object detecting apparatus for production of girein dry according to claim 1, characterized by, The second conveying belt (6) is provided with a plurality of box grooves (13) arranged at equal intervals, and the collecting boxes (7) are arranged in the box grooves (13).

8. The foreign object detecting apparatus for production of girein dried fruit according to claim 1, characterized by The sliding plate (4) is fixedly connected with a second baffle (14) on opposite sides, respectively.