A smart metal detector
By designing an intelligent metal detector, combined with a belt conveyor, metal detection components, and automatic feeding components, the problem of not being able to easily remove food containing metal impurities in existing technologies has been solved. This enables automatic clamping and feeding collection, improving food processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINHUA FOOD (GUANGZHOU) GROUP CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-31
AI Technical Summary
Existing metal detectors for food cannot easily remove food containing metal impurities, affecting food processing efficiency.
An intelligent metal detector was designed, comprising a belt conveyor, a metal detection component, and an automatic feeding component. The main controller controls the lifting component and the servo motor drives the clamping plate to achieve automatic clamping and feeding of food containing metal impurities.
It enables the convenient and automatic collection of metal impurities detected in food, significantly improving food processing efficiency.
Smart Images

Figure CN224581516U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal detection, specifically to an intelligent metal detector. Background Technology
[0002] Metal detectors are widely used detectors, mainly of three types: electromagnetic induction type, X-ray detection type, and microwave detection type. They are electronic instruments used to detect metals and can be applied in many fields. In the food industry, metal detectors are mainly used to detect metal impurities. Food metal detectors are usually placed on a conveyor belt and pass through the metal probe. If metal impurities are found, the detector will alarm and stop.
[0003] While conventional metal detectors for food can detect metal impurities in food and trigger an alarm to stop, they cannot easily remove food containing metal impurities, which is detrimental to food processing efficiency and requires further improvement.
[0004] Therefore, it is necessary to invent an intelligent metal detector. Utility Model Content
[0005] Therefore, this utility model provides an intelligent metal detector to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an intelligent metal detector, comprising a belt conveyor for conveying food, a vertical support plate fixed on one side of the belt conveyor, a main controller fixed on the surface of the vertical support plate, a right-angle support plate fixed on the other side of the belt conveyor, a top plate horizontally fixed at the top of the vertical support plate and the right-angle support plate, a metal detection component and an automatic feeding component fixed on the top plate via a lifting assembly, and both the metal detection component and the automatic feeding component being electrically connected to the main controller.
[0007] Preferably, the lifting assembly includes a first electric push rod, the bottom end of which is vertically fixed to the top of the top plate, the main controller is electrically connected to the first electric push rod, and the output shaft of the first electric push rod is fixed with a lifting plate.
[0008] Preferably, the metal detection assembly includes a metal detection head, which is fixed to the bottom of the lifting plate and located directly above the belt conveyor. The metal detection head is electrically connected to the main controller.
[0009] Preferably, a buzzer alarm is fixed to the top side of the top plate, and the main controller is electrically connected to the buzzer alarm.
[0010] Preferably, the automatic unloading assembly includes a horizontally arranged movable base, the top of which is fixed to the bottom of the lifting plate, a servo motor fixed to the side of the movable base, a main controller electrically connected to the servo motor, a lead screw fixed to the output shaft of the servo motor, a threaded sleeve threaded to the surface of the lead screw, a limit slide plate vertically fixed to the bottom of the threaded sleeve, a strip-shaped limit hole horizontally opened at the bottom of the movable base, the bottom end of the limit slide plate vertically penetrating the strip-shaped limit hole, and the surface of the limit slide plate fitting against the wall of the strip-shaped limit hole, and a movable plate fixed to the bottom end of the limit slide plate.
[0011] Preferably, a connecting plate is fixed to the bottom of the movable plate, a first clamping plate is fixed to the bottom end of the connecting plate away from the movable plate, an end plate is vertically fixed to the middle of the bottom of the connecting plate, a second electric push rod is horizontally fixed to the side end of the end plate, the main controller is electrically connected to the second electric push rod, a second clamping plate is fixed to the output shaft of the second electric push rod, and the second clamping plate is correspondingly arranged with the first clamping plate.
[0012] Preferably, the automatic feeding assembly further includes a feeding port, which is opened on a right-angle support plate, and the initial positions of the first clamping plate and the second clamping plate are located directly above the feeding port.
[0013] Preferably, a collection box is placed on one side of the belt conveyor, and the collection box is located directly below the discharge port.
[0014] The beneficial effects of this utility model are: by using the belt conveyor, vertical support plate, main controller, right-angle support plate, top plate, lifting component, metal detection component and automatic feeding component together, it can not only detect metal impurities in food and alarm to stop the machine, but also conveniently pick up food containing metal impurities and automatically feed and collect it, which greatly improves food processing efficiency and is suitable for promotion. Attached Figure Description
[0015] Figure 1 A structural cross-sectional view provided for this utility model;
[0016] Figure 2 Top view of the structure provided for this utility model;
[0017] Figure 3 The usage effect diagram provided for this utility model;
[0018] Figure 4 The circuit connection block diagram provided for this utility model.
[0019] In the diagram: 1. Belt conveyor; 2. Vertical support plate; 3. Main controller; 4. Right-angle support plate; 5. Top plate; 6. First electric push rod; 7. Lifting plate; 8. Metal detector; 9. Buzzer alarm; 10. Moving base; 11. Servo motor; 12. Lead screw; 13. Threaded sleeve; 14. Limiting slide plate; 15. Strip-shaped limiting hole; 16. Moving plate; 17. Connecting plate; 18. First clamping plate; 19. End plate; 20. Second electric push rod; 21. Second clamping plate; 22. Discharge port; 23. Collection box. Detailed Implementation
[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0021] Please refer to the appendix. Figures 1-4 This utility model provides an intelligent metal detector, including a belt conveyor 1 for conveying food. It should be noted that the belt conveyor drives the rollers to rotate through a reduction motor on the frame, and the belt is driven to rotate by the friction between the rollers and the conveyor belt, so that the food can be conveyed sequentially. A vertical support plate 2 is vertically fixed on one side of the belt conveyor 1, and a main controller 3 is fixed on the surface of the vertical support plate 2. It should be noted that the main controller 3 is electrically connected to an external 220V mains power, and the belt conveyor 1 is electrically connected to the main controller 3, that is, the main controller 3 can control the start and stop of the belt conveyor 1. A right-angle support plate 4 is fixed on the other side of the belt conveyor 1, and a top plate 5 is horizontally fixed at the top of the vertical support plate 2 and the right-angle support plate 4. A metal detection component and an automatic feeding component are fixed on the top plate 5 through a lifting component. Both the metal detection component and the automatic feeding component are electrically connected to the main controller 3.
[0022] The lifting assembly includes a first electric push rod 6, the bottom end of which is vertically fixed to the top of the top plate 5. The main controller 3 is electrically connected to the first electric push rod 6. The output shaft of the first electric push rod 6 is fixed with a lifting plate 7. Specifically, when the first electric push rod 6 is running, it can drive the lifting plate 7 to move up and down.
[0023] The metal detection assembly includes a metal detector head 8, which is fixed to the bottom of the lifting plate 7 and located directly above the belt conveyor 1. The metal detector head 8 is electrically connected to the main controller 3. A buzzer alarm 9 is fixed to the top side of the top plate 5, and the main controller 3 is electrically connected to the buzzer alarm 9. Specifically, when food containing metal impurities is conveyed by the belt conveyor 1 to the area below the metal detector head 8, the metal detector head 8 sends a signal to the main controller 3. The main controller 3 controls the buzzer alarm 9 to run and controls the belt conveyor 1 to stop running. That is, this utility model can have the function of detecting metal impurities in food and alarming to stop the machine.
[0024] The automatic feeding assembly includes a horizontally arranged movable base 10, the top of which is fixed to the bottom of the lifting plate 7. A servo motor 11 is fixed to the side of the movable base 10. The main controller 3 is electrically connected to the servo motor 11. A lead screw 12 is fixed to the output shaft of the servo motor 11. A threaded sleeve 13 is threadedly connected to the surface of the lead screw 12. A limit plate 14 is vertically fixed to the bottom of the threaded sleeve 13. A strip-shaped limit hole 15 is horizontally opened at the bottom of the movable base 10. The bottom end of the limit plate 14 vertically penetrates the strip-shaped limit hole 15, and the surface of the limit plate 14 is in contact with the wall of the strip-shaped limit hole 15. A movable plate 16 is fixed to the bottom end of the limit plate 14. Specifically, under the combined limiting action of the limit plate 14 and the strip-shaped limit hole 15, when the servo motor 11 runs and drives the lead screw 12 to rotate in both directions, the threaded sleeve 13 threadedly connected to the surface of the lead screw 12 can move horizontally in a straight line back and forth, so that the movable plate 16 can move horizontally in a straight line back and forth synchronously.
[0025] A connecting plate 17 is fixed to the bottom of the movable plate 16. A first clamping plate 18 is fixed to the bottom end of the connecting plate 17 away from the movable plate 16. An end plate 19 is vertically fixed to the middle of the bottom of the connecting plate 17. A second electric push rod 20 is horizontally fixed to the side end of the end plate 19. The main controller 3 is electrically connected to the second electric push rod 20. A second clamping plate 21 is fixed to the output shaft of the second electric push rod 20. The second clamping plate 21 is correspondingly set with the first clamping plate 18. Specifically, when the second electric push rod 20 is running, it can drive the second clamping plate 21 to move back and forth in a straight line. With the use of the first clamping plate 18, food containing metal impurities can be automatically clamped. When the movable plate 16 moves back and forth in a straight line in a straight line, the first clamping plate 18 and the second clamping plate 21 can be moved synchronously through the connecting plate 17, so that the clamped food can be moved in a straight line. When the first electric push rod 6 is running, it can drive the first clamping plate 18 and the second clamping plate 21 to rise and fall, so as to control the first clamping plate 18 and the second clamping plate 21 to move down to clamp the food.
[0026] The automatic feeding assembly also includes a feeding port 22, which is located on a right-angle support plate 4. The initial positions of the first clamping plate 18 and the second clamping plate 21 are directly above the feeding port 22. A collection box 23 is placed on one side of the belt conveyor 1, and the collection box 23 is located directly below the feeding port 22. Specifically, when the first clamping plate 18 and the second clamping plate 21 move back and forth to their initial positions, the food containing metal impurities is moved above the feeding port 22. Then, the second electric push rod 20 operates to control the second clamping plate 21 and the first clamping plate 18 to open, allowing the food to be fed from the feeding port 22 into the collection box 23 for collection. Therefore, this utility model can also conveniently pick up and automatically feed and collect food containing metal impurities, greatly improving food processing efficiency.
[0027] The usage process of this utility model is as follows: During use, the running belt conveyor 1 conveys food sequentially below the metal detector 8. When food containing metal impurities is conveyed by the belt conveyor 1 to the area below the metal detector 8, the metal detector 8 sends a signal to the main controller 3. The main controller 3 controls the buzzer alarm 9 to run and controls the belt conveyor 1 to stop running. That is, this utility model can have the function of detecting metal impurities in food and alarming to stop the machine. At this time, the servo motor 11 runs, and through the moving plate 16 and the connecting plate 17, it drives the first clamping plate 18 and the second clamping plate 21 to move above the food containing metal impurities. Then, the first electric push rod 6 runs, controlling the first clamping plate 18 and the second clamping plate 21 to move down. Then, the second electric push rod 20 runs, controlling the first clamping plate 18 and the second clamping plate 21 to close, thus closing the food containing metal impurities. Food containing metal impurities is automatically picked up. Then, the first electric push rod 6 reverses to control the picked-up food to move upward, and the servo motor 11 reverses to control the first clamping plate 18 and the second clamping plate 21 to move to the initial position. At this time, the food containing metal impurities is moved above the feeding port 22. Then, the second electric push rod 20 runs to control the second clamping plate 21 and the first clamping plate 18 to open, and the food is fed from the feeding port 22 into the collection box 23 for collection. Therefore, this utility model can also conveniently pick up and automatically collect food containing metal impurities, greatly improving food processing efficiency. Then, when the first clamping plate 18 and the second clamping plate 21 move to the initial position, the belt conveyor 1 can continue to run to convey the food sequentially under the metal detector 8. When encountering food containing metal impurities, the above actions can be repeated.
[0028] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art can modify this utility model or modify it into an equivalent technical solution using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solution of this utility model are within the scope of protection claimed by this utility model.
Claims
1. An intelligent metal detector, comprising a belt conveyor (1) for conveying food, a vertical support plate (2) being vertically fixed on one side of the belt conveyor (1), and a main controller (3) being fixed on the surface of the vertical support plate (2), characterized in that: A right-angle support plate (4) is fixed on the other side of the belt conveyor (1). A top plate (5) is horizontally fixed at the top of the vertical support plate (2) and the right-angle support plate (4). A metal detection component and an automatic feeding component are fixed on the top plate (5) through a lifting component. The metal detection component and the automatic feeding component are electrically connected to the main controller (3). The lifting assembly includes a first electric push rod (6), the bottom end of which is vertically fixed to the top of the top plate (5), the main controller (3) is electrically connected to the first electric push rod (6), and the output shaft of the first electric push rod (6) is fixed with a lifting plate (7). The automatic feeding assembly includes a horizontally arranged movable base (10), the top of which is fixed to the bottom of the lifting plate (7), a servo motor (11) is fixed to the side of the movable base (10), the main controller (3) is electrically connected to the servo motor (11), a lead screw (12) is fixed to the output shaft of the servo motor (11), a threaded sleeve (13) is threaded to the surface of the lead screw (12), a limit plate (14) is vertically fixed to the bottom of the threaded sleeve (13), a strip-shaped limit hole (15) is horizontally opened at the bottom of the movable base (10), the bottom end of the limit plate (14) vertically penetrates the strip-shaped limit hole (15), and the surface of the limit plate (14) is in contact with the wall of the strip-shaped limit hole (15), and a movable plate (16) is fixed to the bottom end of the limit plate (14). The bottom of the movable plate (16) is fixed with a connecting plate (17). The bottom of the connecting plate (17) away from the movable plate (16) is fixed with a first clamping plate (18). The bottom middle of the connecting plate (17) is vertically fixed with an end plate (19). The side end of the end plate (19) is horizontally fixed with a second electric push rod (20). The main controller (3) is electrically connected to the second electric push rod (20). The output shaft of the second electric push rod (20) is fixed with a second clamping plate (21). The second clamping plate (21) is correspondingly set with the first clamping plate (18).
2. The intelligent metal detector of claim 1, wherein: The metal detection assembly includes a metal detector head (8), which is fixed at the bottom of the lifting plate (7) and located directly above the belt conveyor (1). The metal detector head (8) is electrically connected to the main controller (3).
3. The intelligent metal detector of claim 2, wherein: A buzzer alarm (9) is fixed to the top side of the top plate (5), and the main controller (3) is electrically connected to the buzzer alarm (9).
4. The intelligent metal detector of claim 1, wherein: The automatic feeding assembly also includes a feeding port (22), which is opened on a right-angle support plate (4). The initial positions of the first clamping plate (18) and the second clamping plate (21) are located directly above the feeding port (22).
5. The intelligent metal detector of claim 4, wherein: A collection box (23) is placed on one side of the belt conveyor (1), and the collection box (23) is located directly below the discharge port (22).