Bread processing metal detection device and detection method thereof

Abstract

The invention discloses a bread processing metal detection device and a detection method thereof, and relates to the technical field of heavy metal detection.The bread processing metal detection device comprises a crushing mechanism, an extruding mechanism, a stirring mechanism, a movable plate, a pressing plate, a movable mechanism and a pulling mechanism, the crushing mechanism is used for crushing bread materials, and the extruding mechanism is installed at the bottom of the crushing mechanism; the stirring mechanism rotates in an inner cavity of the extrusion mechanism, the movable plate is arranged at the bottom of the inner cavity of the extrusion mechanism, the pressing plate moves in the inner cavity of the extrusion mechanism, the movable mechanism slides at the top of an inner cavity of the detection cylinder, and the pulling mechanism is installed at the top of the movable plate. By integrating the crushing mechanism and the extrusion detection mechanism, full-process automatic operation from sample crushing, mixing and stirring to liquid extraction and metal detection is realized, dissolution of metal components is promoted, a detector can quickly detect liquid, meanwhile, a reagent can react with heavy metal for color inspection, and the detection stability is improved.

Description

Technical Field

[0001] This invention relates to the field of heavy metal detection technology, and in particular to a metal detection device and method for bread processing. Background Technology

[0002] In the food processing industry, quality and safety control of baked goods such as bread is particularly important. During the processing of bread and other baked goods, raw materials such as flour, grains, and additives may introduce heavy metal impurities due to contamination from the planting environment, mining, processing equipment wear and tear, or transportation. Alternatively, additives such as non-food colorings may also contribute to the presence of heavy metals in the bread. These heavy metals pose a serious threat to human health; even trace amounts can accumulate in the body and lead to chronic poisoning. Therefore, rigorous heavy metal testing of bread raw materials is a crucial step in ensuring food safety.

[0003] Traditional metal detection methods rely on scanning the entire finished product. However, this method is difficult to detect small metal particles or heavy metal powder embedded or encapsulated inside bread. Especially when metal contaminants are mixed in during the raw material stage, the risk of missed detection in the finished product is high. This makes it impossible for existing detection methods to effectively process samples, extract possible metal components, and achieve efficient dispersion and detection in liquid media. As a result, the reliability of detection is low, which affects the stability of metal detection in bread processing. Summary of the Invention

[0004] The purpose of this invention is to provide a metal detection device and method for bread processing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal detection device for bread processing, comprising: A crushing mechanism, used for crushing bread materials; An extrusion mechanism is installed at the bottom of the crushing mechanism; A stirring mechanism, which rotates within the inner cavity of the extrusion mechanism, is used for stirring materials; A movable plate, wherein the movable plate is disposed at the bottom of the inner cavity of the extrusion mechanism; A pressure plate, which is movable within the inner cavity of the extrusion mechanism, and the relative movement of the movable plate and the pressure plate is used to extrude liquid from the bread material; An active mechanism is provided, which slides on the top of the inner cavity of the detection cylinder and is used for the reciprocating vibration of the pressure plate. A pulling mechanism is installed on the top of the movable plate and is used to pull the movable plate.

[0006] Preferably, the crushing mechanism includes: A crushing cylinder, used to support large pieces of bread material; A cover body, which is attached to the top of the crushing cylinder by a snap fastener; A crushing cutter head, wherein the crushing cutter head is disposed in the inner cavity of the crushing cylinder; The first crosshead is installed in the middle of the cover body via a drive motor, and the first crosshead is inserted and connected to the top of the crushing cutter head. A support frame is fixed to the bottom of the inner cavity of the crushing cylinder, and the crushing cutter head is rotatably connected to the middle part of the support frame through a bearing; The second crosshead is fixed to the bottom of the support frame.

[0007] Preferably, the extrusion mechanism includes: The detection cylinder is connected to the bottom of the crushing cylinder by bolts, and a metering cylinder is installed on the outer wall of the detection cylinder through a pipe. The metering cylinder is used for adding liquids and reagents. A detector, wherein the detector is installed on one side of the bottom of the detection cylinder; A liquid outlet pipe is installed on the other side of the bottom of the detection cylinder, and the liquid outlet pipe is used for discharging liquid; A viewing window is fixedly embedded in the outer wall of the detection cylinder, and the viewing window is used for direct viewing of the liquid inside the detection cylinder.

[0008] Preferably, the agitation mechanism includes: The connecting column has its bottom rotatably inserted into the bottom of the detection cylinder via a bearing, and the second crosshead is inserted into and engaged with the top of the connecting column. The movable plate is slidably sleeved on the outer wall of the connecting column. The first slot, and a plurality of the first slots are arranged in a ring array on the outer wall of the connecting column; The first stirring rod is rotatably connected to the bottom of the inner wall of the adjacent first slot via a pin. The second slot, a plurality of the second slots are arranged in a ring array on the outer wall of the connecting column, and the second slots are disposed between two adjacent first slots; The second stirring rod is rotatably connected to the bottom of the inner wall of the adjacent second slot via a pin, and the movable plate is used to store the first and second stirring rods on top.

[0009] Preferably, the active mechanism includes: A movable ring, which moves within the inner cavity of the detection cylinder; A limiting block, wherein multiple limiting blocks are fixed to the outer wall of the movable ring in a ring array, and the limiting blocks are slidably interlocked with the top of the inner wall of the detection cylinder; Guide wheels, a plurality of the guide wheels are mounted on the inner wall of the movable ring by a bracket; A sliding hole is formed on the outer wall of the movable ring, and the sliding hole is used for the insertion and movement of the pulling mechanism.

[0010] Preferably, the active mechanism further includes: An electric telescopic rod is fixed to the top of the inner wall of the detection cylinder by a clamp, and the telescopic end of the electric telescopic rod is fixedly connected to the top of the movable ring by a connector. A connecting rope, wherein multiple connecting ropes are fixed in a circular array between the pressure plate and the movable ring, and multiple locking blocks are fixedly connected to the inner wall of the detection cylinder, the locking blocks being used to limit the sliding of the pressure plate.

[0011] Preferably, the pulling mechanism includes: Pull ropes, multiple pull ropes are fixed to the top of the movable plate; A winding frame is fixed to the outer wall of the detection cylinder by a mounting bracket, and multiple pull ropes are wound up in the middle of the winding frame; A servo motor, the output end of which is connected to one end of the winding frame via a rotating shaft, is used for the synchronous winding and unwinding of multiple ropes.

[0012] Preferably, the pull rope is slidably interlocked with the side of the pressure plate, and the pull rope is slidably interlocked with the bottom of the movable ring. The pull rope is used to pull the movable plate.

[0013] Preferably, the pull rope is slidably connected to the outer wall of the guide wheel, the plurality of pull ropes are slidably interlocked with the inner cavity of the sliding hole, and the pull rope is slidably interlocked with the top outer wall of the detection cylinder.

[0014] This invention also provides a method for detecting metal in bread processing, comprising the following specific steps: Step 1: Put the bread material to be tested into the inner cavity of the crushing cylinder, put the cover on, drive the motor on the first crosshead so that the crushing blade can crush the bread material. The crushed bread material falls into the inner cavity of the detection cylinder through the support frame for metal detection. Step 2: Some of the crushed material falls through the middle of the pressure plate to the upper surface of the movable plate, while some remains on the pressure plate. Driven by the electric telescopic rod, the movable ring is pulled back and forth, causing the connecting rope to drive the pressure plate to shake back and forth. This allows the crushed material on the pressure plate to slide to the bottom of the detection cylinder. The detection liquid is then poured into the inner cavity of the quantitative cylinder, allowing the liquid to enter the inner cavity of the detection cylinder through the pipe and wet the crushed material. The drive motor on the cover is then driven again, causing the connecting column to rotate. This allows the first and second stirring rods to stir the liquid and crushed material, making the metal in the crushed material more soluble in the detection liquid for testing. Step 3: After the first and second stirring rods stir the liquid and the fragments, the servo motor is driven so that the winding frame can pull and wind the rope, causing the movable plate to move upward. The middle of the movable plate gathers the first and second stirring rods, and the movable plate moves the fragments upward and towards the pressure plate, so that the fragments can be squeezed between the movable plate and the pressure plate. This allows the liquid to move quickly from the periphery of the movable plate to the bottom of the detection cylinder, enabling the detector to perform metal detection on the liquid after the fragments are squeezed.

[0015] The technical effects and advantages of this invention are as follows: This invention integrates a crushing mechanism and an extrusion detection mechanism to achieve fully automated operation from sample crushing and mixing to liquid extraction and metal detection, significantly improving detection efficiency and operational continuity. Through the retractable stirring rod structure, the crushed material and detection liquid are fully mixed during the stirring process, promoting the dissolution of metal components. After stirring, the stirring rod can be quickly retracted to avoid interfering with subsequent extrusion operations, enabling the detector to quickly detect the liquid. At the same time, the reagent can react with heavy metals for color inspection, improving detection stability. This invention utilizes bolts to connect the detection cylinder and the crushing cylinder, facilitating disassembly and internal cleaning, avoiding cross-contamination, and achieving power transmission between the crushing cutter head and the connecting column through the first and second crossheads, reducing independent drive components, resulting in a compact structure and stable transmission, without affecting the separate cleaning of the crushing cylinder and the detection cylinder, thus improving the ease of use of the device. This invention achieves multiple compressions of the scrap material through the relative movement of the movable plate and the pressure plate, ensuring that residual liquid is fully squeezed out, reducing the residue of heavy metals in the scrap material, and realizing efficient dispersion and detection in liquid media. Combined with the shaking function of the movable mechanism, it prevents the residue of scrap material on the pressure plate and facilitates the uniform cleaning of the scrap material in the later stage, improving the ease of metal detection in bread. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the overall front structure of the present invention.

[0018] Figure 3 This is a top-view cross-sectional view of the crushing cylinder of the present invention.

[0019] Figure 4 This is a top-view cross-sectional view of the movable ring structure of the present invention.

[0020] Figure 5 This is a partial cross-sectional view of the front of the connecting column of the present invention.

[0021] Figure 6 For the present invention Figure 1Enlarged structural diagram at point A in the middle.

[0022] Figure 7 For the present invention Figure 2 Enlarged structural diagram at point B.

[0023] In the diagram: 100, Crushing mechanism; 101, Crushing cylinder; 102, Cover; 103, Crushing cutter head; 104, First crosshead; 105, Support frame; 106, Second crosshead; 200, Extrusion mechanism; 201, Detection cylinder; 202, Detector; 203, Liquid outlet pipe; 204, Viewing window; 300, Stirring mechanism; 301, Connecting column; 302, First slot; 303, First stirring rod; 304, Second slot; 305, Second stirring rod; 400, Movable plate; 500, Pressure plate; 600, Movable mechanism; 601, Movable ring; 602, Limiting block; 603, Guide wheel; 604, Sliding hole; 605, Electric telescopic rod; 606, Connecting rope; 700, Pulling mechanism; 701, Pull rope; 702, Winding frame; 703, Servo motor; 800, Metering cylinder. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides, for example Figure 1-7 The illustrated bread processing metal detection device includes a crushing mechanism 100, a pressing mechanism 200, a stirring mechanism 300, a movable plate 400, a pressure plate 500, a movable mechanism 600, and a pulling mechanism 700. The crushing mechanism 100 is used to crush bread materials. The pressing mechanism 200 is installed at the bottom of the crushing mechanism 100 and is used to detect the mixing of crushed bread materials with liquid. The stirring mechanism 300 rotates within the inner cavity of the pressing mechanism 200 and is used to stir the materials, facilitating the mixing of liquid and crushed materials and preventing heavy metals in the crushed materials from being detected. The movable plate 400 is located at the bottom of the inner cavity of the extrusion mechanism 200, and the pressure plate 500 is movable within the inner cavity of the extrusion mechanism 200. The relative movement of the movable plate 400 and the pressure plate 500 is used to extrude liquid from the bread material. The movable mechanism 600 slides on the top of the inner cavity of the detection cylinder 201. The movable mechanism 600 is used for the reciprocating shaking of the pressure plate 500. The pulling mechanism 700 is installed on the top of the movable plate 400. The pulling mechanism 700 is used to pull the movable plate 400, so that the movable plate 400 can move towards the pressure plate 500, which facilitates the extrusion of residual liquid from the crushed material.

[0026] The crushing mechanism 100 includes a crushing cylinder 101, a cover 102, a crushing blade 103, a first crosshead 104, a support frame 105, and a second crosshead 106. The crushing cylinder 101 is used to support large pieces of bread material. The cover 102 is installed on the top of the crushing cylinder 101 via a snap fastener. The crushing blade 103 is disposed in the inner cavity of the crushing cylinder 101. The first crosshead 104 is installed in the middle of the cover 102 via a drive motor. The drive motor is electrically connected to an external power supply via an external control switch, and the output end of the drive motor is fixedly connected to the top of the first crosshead 104. The first crosshead 104 and the crushing blade... The top of the head 103 is inserted and connected to facilitate the stable rotation of the first crosshead 104 driving the crushing head 103. The support frame 105 is fixed to the bottom of the inner cavity of the crushing cylinder 101. The crushing head 103 and the middle of the support frame 105 are rotatably connected by a bearing. The support frame 105 and the bottom of the crushing cylinder 101 form a hollow structure, which facilitates the crushed bread material to fall into the inner cavity of the extrusion mechanism 200. The second crosshead 106 is fixed to the bottom of the support frame 105. The first crosshead 104 and the second crosshead 106 are cross-shaped structures, which facilitates the separation between the crushing head 103 and the stirring mechanism 300.

[0027] Furthermore, the extrusion mechanism 200 includes a detection cylinder 201, a detector 202, a liquid outlet pipe 203, and a viewing window 204. The detection cylinder 201 is connected to the bottom of the crushing cylinder 101 by bolts, facilitating easy assembly and disassembly between the detection cylinder 201 and the crushing cylinder 101. A metering cylinder 800 is installed on the outer wall of the detection cylinder 201 via a pipe, and a control valve is installed on the pipe to control the entry of liquid into the inner cavity of the detection cylinder 201. The metering cylinder 800 is used for adding liquids and reagents. The detector 202 is installed on the detection cylinder 201. On one side of the bottom of the 1, the detector 202 is used for metal detection and is connected to the control system. The liquid outlet pipe 203 is installed on the other side of the bottom of the detection cylinder 201. The liquid outlet pipe 203 is used for liquid discharge. The detection cylinder 201 and the crushing cylinder 101 can be disassembled and assembled to facilitate cleaning of the inner cavity of the detection cylinder 201. The viewing window 204 is fixedly embedded in the outer wall of the detection cylinder 201. The viewing window 204 is used for direct viewing of the liquid in the inner cavity of the detection cylinder 201, which is convenient for viewing the color change after the reagent combines with the bread metal.

[0028] Furthermore, the stirring mechanism 300 includes a connecting column 301, a first slot 302, a first stirring rod 303, a second slot 304, and a second stirring rod 305. The bottom of the connecting column 301 is rotatably connected to the bottom of the detection cylinder 201 via a bearing. The second crosshead 106 is inserted and engaged with the top of the connecting column 301. The movable plate 400 is slidably sleeved on the outer wall of the connecting column 301. Multiple first slots 302 are arranged in a circular array on the outer wall of the connecting column 301. The first stirring rod 303 is rotatably connected to the bottom of the inner wall of the adjacent first slot 302 via a pin. Multiple second slots 304 are arranged in a circular array on the outer wall of the connecting column 301. The second slot 304 is located between two adjacent first slots 302. The second stirring rod 305 is rotatably connected to the bottom of the inner wall of the adjacent second slot 304 via a pin. The movable plate 400 is used to house the first stirring rod 303 and the second stirring rod 305. When the movable plate 400 slides upward, the middle part of the movable plate 400 can close the first stirring rod 303 and the second stirring rod 305, so that the first stirring rod 303 is housed in the inner cavity of the first slot 302 and the second stirring rod 305 is housed in the inner cavity of the second slot 304. This allows the movable plate 400 to slide stably at the bottom of the detection cylinder 201. The top structure of the stirring mechanism 300 cooperates with the structure of the second crosshead 106. Through the insertion with the second crosshead 106, the crushing head 103 drives the stirring mechanism 300 to rotate stably, so that the first stirring rod 303 and the second stirring rod 305 can stir the liquid and fragments at the bottom of the detection cylinder 201, thereby improving the fusion efficiency of the liquid and fragments.

[0029] Additionally, the movable mechanism 600 includes a movable ring 601, limiting blocks 602, guide wheels 603, sliding holes 604, an electric telescopic rod 605, and a connecting rope 606. The movable ring 601 is movable within the inner cavity of the detection cylinder 201 and has a ring-shaped structure. Multiple limiting blocks 602 are fixed to the outer wall of the movable ring 601 in a ring array. The limiting blocks 602 are slidably inserted into the top of the inner wall of the detection cylinder 201, and the sliding distance of the limiting blocks 602 on the detection cylinder 201 is limited. Multiple guide wheels 603 are mounted on the inner wall of the movable ring 601 via brackets. The sliding holes 604 are formed on the outer wall of the movable ring 601 and are used to pull the mechanism 700. The electric telescopic rod 605 is fixed to the top of the inner wall of the detection cylinder 201 by a clamp. The telescopic end of the electric telescopic rod 605 is fixedly connected to the top of the movable ring 601 by a connector. Multiple connecting ropes 606 are fixed in a ring array between the pressure plate 500 and the movable ring 601. Multiple locking blocks are fixedly connected to the inner wall of the detection cylinder 201. The locking blocks are used to limit the sliding of the pressure plate 500, prevent the pressure plate 500 from sliding continuously upward, and ensure that the movable plate 400 presses stably against the pressure plate 500, so that it can squeeze the debris between the movable plate 400 and the pressure plate 500, which facilitates the extrusion of liquid and improves the convenience of the detector 202 for metal detection of liquid.

[0030] Specifically, the pulling mechanism 700 includes pull ropes 701, a winding frame 702, and a servo motor 703. Multiple pull ropes 701 are fixed to the top of the movable plate 400. The winding frame 702 is fixed to the outer wall of the detection cylinder 201 via a mounting bracket. The multiple pull ropes 701 are wound into the middle of the winding frame 702. The output end of the servo motor 703 is connected to one end of the winding frame 702 via a rotating shaft. The servo motor 703 is used for the synchronous winding and unwinding of the multiple pull ropes 701. The servo motor 703 is electrically connected to an external power supply via an external control switch. The pull ropes 701 are slidably inserted into the side of the pressure plate 500 and slidably inserted into the bottom of the movable ring 601. 701 is used to pull the movable plate 400. The pull rope 701 is slidably connected to the outer wall of the guide wheel 603. Multiple pull ropes 701 are slidably inserted into the inner cavity of the sliding hole 604. The pull rope 701 is slidably inserted into the top outer wall of the detection cylinder 201. Driven by the servo motor 703, the winding frame 702 can pull or unwind the pull rope 701, so that the pull rope 701 can pass through the movable ring 601 and the pressure plate 500 to pull the movable plate 400 upward or move it downward by gravity. This facilitates the stable movement of the movable plate 400 at the bottom of the detection cylinder 201 without affecting the mixing of bread materials, improving the detection of liquid extrusion in bread crumbs and improving detection stability.

[0031] How to use this invention: Step 1: Put the bread material to be tested into the inner cavity of the crushing cylinder 101, cover it with the cover 102, drive the drive motor on the first crosshead 104 so that its crushing blade 103 can crush the bread material. The crushed bread material falls into the inner cavity of the detection cylinder 201 through the support frame 105 for metal detection. Step 2: Some of the crushed material falls through the middle of the pressure plate 500 onto the upper surface of the movable plate 400, while some of the crushed material remains on the pressure plate 500. Driven by the electric telescopic rod 605, the movable ring 601 is pulled back and forth, causing the connecting rope 606 to drive the pressure plate 500 to shake back and forth. This allows the crushed material on the pressure plate 500 to slide down to the bottom of the detection cylinder 201. The detection liquid is then poured into the inner cavity of the metering cylinder 800, allowing the liquid to enter the inner cavity of the detection cylinder 201 through the pipe and wet the crushed material. The drive motor on the cover 102 is then driven again, causing the connecting column 301 to rotate. This allows the first stirring rod 303 and the second stirring rod 305 to stir the liquid and the crushed material, allowing the metal in the crushed material to dissolve more easily into the detection liquid for testing. Step 3: After the first stirring rod 303 and the second stirring rod 305 stir the liquid and the crushed material, the servo motor 703 is driven so that the winding frame 702 can pull and wind the rope 701, causing the movable plate 400 to move upward. The middle of the movable plate 400 gathers the first stirring rod 303 and the second stirring rod 305. The movable plate 400 drives the crushed material to move upward and towards the pressure plate 500, so that the crushed material can be squeezed between the movable plate 400 and the pressure plate 500. This allows the liquid to move quickly from the periphery of the movable plate 400 to the bottom of the detection cylinder 201, so that the detector 202 can perform metal detection on the liquid after the crushed material is squeezed.

[0032] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A bread processing metal detection apparatus characterized by comprising: include: A crushing mechanism (100) for crushing bread materials; An extrusion mechanism (200) is mounted on the bottom of the crushing mechanism (100); A stirring mechanism (300) rotates within the cavity of the extrusion mechanism (200) and is used for stirring materials; An active plate (400) is disposed at the bottom of the inner cavity of the extrusion mechanism (200); A pressure plate (500) is movable in the inner cavity of the extrusion mechanism (200), and the relative movement of the movable plate (400) and the pressure plate (500) is used for the extrusion of liquid in bread material; An active mechanism (600) slides on the top of the inner cavity of the detection cylinder (201) and is used for the reciprocating vibration of the pressure plate (500); A pulling mechanism (700) is installed on the top of the movable plate (400) and is used to pull the movable plate (400).

2. A bread processing metal detection apparatus according to claim 1, characterised in that, The crushing mechanism (100) includes: Crushing cylinder (101), the crushing cylinder (101) is used to carry large pieces of bread material; A cover (102) is attached to the top of the crushing cylinder (101) by means of a snap fastener; A crushing cutter head (103) is disposed in the inner cavity of the crushing cylinder (101); The first crosshead (104) is installed in the middle of the cover (102) by a drive motor, and the first crosshead (104) is inserted and connected to the top of the crushing head (103). The support frame (105) is fixed to the bottom of the inner cavity of the crushing cylinder (101), and the crushing cutter head (103) is rotatably connected to the middle of the support frame (105) through a bearing; The second crosshead (106) is fixed to the bottom of the support frame (105).

3. A bread processing metal detection apparatus according to claim 2, wherein The extrusion mechanism (200) includes: The detection cylinder (201) is connected to the bottom of the crushing cylinder (101) by bolts. The outer wall of the detection cylinder (201) is equipped with a metering cylinder (800) through a pipe. The metering cylinder (800) is used for adding liquids and reagents. The detector (202) is installed on one side of the bottom of the detection cylinder (201); A liquid outlet pipe (203) is installed on the other side of the bottom of the detection cylinder (201), and the liquid outlet pipe (203) is used for liquid discharge; A viewing window (204) is fixedly embedded in the outer wall of the detection cylinder (201) and is used for direct viewing of the liquid inside the detection cylinder (201).

4. The metal detection device for bread processing according to claim 3, characterized in that, The agitation mechanism (300) includes: The bottom of the connecting column (301) is rotatably connected to the bottom of the detection cylinder (201) through a bearing, the second crosshead (106) is inserted and snapped into the top of the connecting column (301), and the movable plate (400) is slidably sleeved on the outer wall of the connecting column (301). The first slot (302) is formed in a ring array on the outer wall of the connecting column (301); The first stirring rod (303) is rotatably connected to the bottom of the inner wall of the adjacent first slot (302) via a pin. The second slot (304) is arranged in a ring array on the outer wall of the connecting column (301), and the second slot (304) is disposed between two adjacent first slots (302); The second stirring rod (305) is rotatably connected to the bottom of the inner wall of the adjacent second slot (304) by a pin, and the movable plate (400) is used to store the first stirring rod (303) and the second stirring rod (305) on the top.

5. A metal detection device for bread processing according to claim 3, characterized in that, The activity mechanism (600) includes: A movable ring (601) is movable within the inner cavity of the detection cylinder (201); Limiting blocks (602), a plurality of the limiting blocks (602) are fixed in a ring array on the outer wall of the movable ring (601), and the limiting blocks (602) are slidably inserted into the top of the inner wall of the detection cylinder (201); Guide wheels (603), a plurality of said guide wheels (603) are mounted on the inner wall of the movable ring (601) by means of brackets; A sliding hole (604) is formed on the outer wall of the movable ring (601), and the sliding hole (604) is used to pull the mechanism (700) through and move.

6. A metal detection device for bread processing according to claim 5, characterized in that, The activity mechanism (600) also includes: An electric telescopic rod (605) is fixed to the top of the inner wall of the detection cylinder (201) by a clamp, and the telescopic end of the electric telescopic rod (605) is fixedly connected to the top of the movable ring (601) by a connector. A connecting rope (606) is fixed in a ring array between the pressure plate (500) and the movable ring (601). A plurality of locking blocks are fixedly connected to the inner wall of the detection cylinder (201), and the locking blocks are used to limit the sliding of the pressure plate (500).

7. A metal detection device for bread processing according to claim 3, characterized in that, The pulling mechanism (700) includes: Pull ropes (701), a plurality of said pull ropes (701) are fixed to the top of the movable plate (400); A winding frame (702) is fixed to the outer wall of the detection cylinder (201) by a mounting bracket, and multiple pull ropes (701) are wound in the middle of the winding frame (702); A servo motor (703) is provided, the output end of which is connected to one end of a winding frame (702) via a rotating shaft. The servo motor (703) is used for the synchronous winding and unwinding of multiple pull ropes (701).

8. A metal detection device for bread processing according to claim 7, characterized in that, The pull rope (701) is slidably inserted into the side of the pressure plate (500), and the pull rope (701) is slidably inserted into the bottom of the movable ring (601). The pull rope (701) is used to pull the movable plate (400).

9. A metal detection device for bread processing according to claim 7, characterized in that, The pull rope (701) is slidably connected to the outer wall of the guide wheel (603), and the multiple pull ropes (701) are slidably inserted into the inner cavity of the sliding hole (604). The pull rope (701) is slidably inserted into the top outer wall of the detection cylinder (201).

10. A method for detecting metals in bread processing according to any one of claims 1-9, characterized in that, The specific usage steps are as follows: Step 1: Place the bread material to be tested into the inner cavity of the crushing cylinder (101), cover it with the cover (102), drive the drive motor on the first crosshead (104) so ​​that its crushing blade (103) can crush the bread material. The crushed bread material falls into the inner cavity of the detection cylinder (201) through the support frame (105) for metal detection. Step 2: Some of the crushed material falls through the middle of the pressure plate (500) to the upper surface of the movable plate (400), and some of the crushed material remains on the pressure plate (500). Driven by the electric telescopic rod (605), the movable ring (601) is pulled back and forth, so that the connecting rope (606) can drive the pressure plate (500) to shake back and forth, so that the crushed material on the pressure plate (500) can slide down to the bottom of the detection cylinder (201). The detection liquid is poured into the inner cavity of the quantitative cylinder (800), so that the liquid can enter the inner cavity of the detection cylinder (201) through the pipe and wet the crushed material. The drive motor on the cover (102) is driven again to drive the connecting column (301) to rotate, so that the first stirring rod (303) and the second stirring rod (305) can stir the liquid and the crushed material, so that the metal in the crushed material can be more dissolved into the detection liquid for detection. Step 3: After the first stirring rod (303) and the second stirring rod (305) stir the liquid and the crushed material, the servo motor (703) is driven so that the winding frame (702) can pull and wind the rope (701), which drives the movable plate (400) to move upward. The middle part of the movable plate (400) gathers the first stirring rod (303) and the second stirring rod (305). The movable plate (400) drives the crushed material to move upward and towards the pressure plate (500), so that the crushed material can be squeezed between the movable plate (400) and the pressure plate (500). This allows the liquid to move quickly from the periphery of the movable plate (400) to the bottom of the detection cylinder (201), so that the detector (202) can perform metal detection on the liquid after the crushed material is squeezed.

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