Metal detector precision improvement mechanism and metal detector

Abstract

The utility model discloses a kind of metal detector precision promotion mechanism and metal detector, the metal detector precision promotion mechanism includes: special-shaped pipeline;The special-shaped pipeline includes the circular entrance section, the flat detection section and the circular exit section connected in order along material flow direction, the circular entrance section and the circular exit section are used to connect external material conveying system, and the flat detection section is used to pass through the detection probe of metal detector.In the utility model, by using circular interface in the entrance section and the exit section of special-shaped pipeline to ensure compatibility with existing conveying system, while adopting flat structure in the middle detection section, effectively improve the identification ability to foreign matter in central area, so as to realize the optimization of detection sensitivity under the premise of not changing the main structure of equipment, with the advantages of simple structure, low modification cost, strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of metal detection technology, and further to a metal detection machine accuracy improvement mechanism and a metal detection machine. Background Technology

[0002] Metal detection equipment typically consists of two parts: a detection probe and a control head. The probe identifies metallic foreign objects, while the control head integrates an electronic control system for equipment operation and signal processing. This type of equipment is widely used in industries such as food, chemicals, and pharmaceuticals to detect potentially contaminated metallic impurities in products, a crucial step in ensuring product quality and safety. For pipeline metal detectors, detection accuracy is a core performance indicator, especially in scenarios where materials are transported through horizontal pipelines, where the accuracy of the detection results directly impacts quality control and risk prevention in subsequent processes.

[0003] Currently, most horizontal pipe metal detectors on the market use circular cross-section conveying pipes and matching circular detection ports. When material flows through the detection area, if the metal foreign objects mixed in are small in size and located near the central axis of the pipe, the electromagnetic field induction intensity in the central area of ​​the pipe is relatively weak, which may cause the foreign objects to be not effectively identified, resulting in missed detection.

[0004] Therefore, it is necessary to design a metal detection machine accuracy improvement mechanism and a metal detection machine to solve the above problems. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this utility model is to provide a metal detection machine accuracy improvement mechanism and a metal detection machine. By using circular interfaces in the inlet and outlet sections of the irregularly shaped pipe to ensure compatibility with existing conveying systems, and adopting a flat structure in the middle detection section, the ability to identify foreign objects in the central area is effectively improved. Thus, without changing the main structure of the equipment, the detection sensitivity is optimized. It has the advantages of simple structure, low modification cost, and strong adaptability.

[0006] To achieve the above objectives, this utility model provides a precision improvement mechanism for a metal detection machine, comprising: an irregularly shaped pipe;

[0007] The irregularly shaped pipe includes a circular inlet section, a flat detection section, and a circular outlet section connected sequentially along the material flow direction. The circular inlet section and the circular outlet section are used to connect to an external material conveying system, and the flat detection section is used to pass through the detection probe of a metal detector.

[0008] In some embodiments, the height dimension of the flat detection section perpendicular to the material flow direction is smaller than its width dimension, and the height dimension of the flat detection section matches the height of the sensing area of ​​the detection probe of the metal detector.

[0009] In some embodiments, the cross-sectional shape of the flat detection section is elliptical or rectangular, and the cross-sectional shape of the flat detection section remains consistent along the material flow direction.

[0010] In some embodiments, the irregularly shaped pipe is made of a non-metallic material;

[0011] The flat detection section has a uniform wall thickness and a smooth inner surface transition.

[0012] In some embodiments, the circular inlet section, the flat detection section, and the circular outlet section are separate structures.

[0013] In some embodiments, the circular inlet section is an irregularly shaped adapter, with one end having a circular opening and the other end having a flat opening. The cross-sectional area of ​​the end of the flat opening is less than or equal to the cross-sectional area of ​​the flat detection section, and the flat opening of the circular inlet section is detachably connected to one end of the flat detection section.

[0014] The circular outlet section is an irregularly shaped adapter, with one end having a circular opening and the other end having a flat opening. The cross-sectional area of ​​the flat opening end is less than or equal to the cross-sectional area of ​​the flat detection section, and the flat opening of the circular outlet section is detachably connected to the other end of the flat detection section.

[0015] In some embodiments, the flat opening end of the circular inlet section is provided with a first connecting structure, and the corresponding end of the flat detection section is provided with a second connecting structure that cooperates with the first connecting structure. The first connecting structure and the second connecting structure are connected by plug-in engagement and fixed by at least one of adhesive, snap-fit ​​or screw.

[0016] The circular outlet section has a third connecting structure at its flat opening end, and the corresponding end of the flat detection section has a fourth connecting structure that cooperates with the third connecting structure. The third connecting structure and the fourth connecting structure are connected by plug-in fitting and fixed by at least one of adhesive, snap-fit ​​or screw.

[0017] In some embodiments, the circular inlet section is made of a metallic material and has a smooth inner surface transition;

[0018] The circular outlet section is made of metal and has a smooth inner surface.

[0019] According to another aspect of the present invention, the present invention further provides a metal detection machine, including the metal detection machine precision improvement mechanism described in any one of the above;

[0020] The metal detector is a horizontal pipe-type metal detector, and a detection port is formed inside its detection probe. The flat detection section of the irregularly shaped pipe is adapted to pass through the detection port.

[0021] In some embodiments, the height of the detection port of the metal detector is adjustable.

[0022] Compared with the prior art, the metal detection machine accuracy improvement mechanism and metal detection machine provided by this utility model have the following beneficial effects:

[0023] In this invention, circular interfaces are used in the inlet and outlet sections of the irregularly shaped pipe to ensure compatibility with existing conveying systems, while a flat structure is adopted in the intermediate detection section. This effectively improves the ability to identify foreign objects in the central area, thereby optimizing the detection sensitivity without changing the main structure of the equipment. It has the advantages of simple structure, low modification cost, and strong adaptability.

[0024] In addition, by setting a first connecting part and a second connecting part for detachable connection at the inlet and outlet sections respectively, it can be easily connected and disconnected from the existing material conveying system. It can be used immediately without large-scale modification of the production line, reducing the cost and complexity of equipment upgrades. At the same time, it is also convenient for daily maintenance, cleaning and parts replacement, improving the maintainability and flexibility of the equipment. Attached Figure Description

[0025] The optional embodiments will be described below in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0026] Figure 1 This is a schematic diagram of the structure of the precision improvement mechanism of the metal detection machine, an optional embodiment of this utility model;

[0027] Figure 2 This is a cross-sectional view of the precision improvement mechanism of a metal detector, an optional embodiment of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of an optional embodiment of the metal detector of this utility model.

[0029] Explanation of icon numbers:

[0030] The irregularly shaped pipe 1 includes a circular inlet section 11, a first connecting structure 111, a flat detection section 12, a second connecting structure 121, a third connecting structure 122, a circular outlet section 13, a fourth connecting part 131, a metal detector 2, and a detection port 21. Detailed Implementation

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0032] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0033] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0034] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] In one embodiment, refer to the appendix to the specification. Figure 1 The present invention provides a precision improvement mechanism for a metal detector, comprising: an irregularly shaped pipe 1; the irregularly shaped pipe 1 includes a circular inlet section 11, a flat detection section 12 and a circular outlet section 13 connected sequentially along the material flow direction, the circular inlet section 11 and the circular outlet section 13 being used to connect to an external material conveying system, and the flat detection section 12 being used to pass through the detection probe of the metal detector.

[0037] In this embodiment, circular interfaces are used in the inlet and outlet sections of the irregular pipe 1 to ensure compatibility with the existing conveying system, while a flat structure is adopted in the middle detection section. This effectively improves the ability to identify foreign objects in the central area, thereby optimizing the detection sensitivity without changing the main structure of the equipment. It has the advantages of simple structure, low modification cost and strong adaptability.

[0038] In one embodiment, refer to the appendix to the specification. Figure 1 The height of the flat detection section 12, perpendicular to the material flow direction, is smaller than its width, and the height of the flat detection section 12 matches the height of the sensing area of ​​the metal detector's probe. The flat structure compresses the vertical space of the material flow, ensuring that foreign objects near the center of the pipe can more effectively enter the area with a stronger sensing field, thereby enhancing the signal response strength. This is particularly helpful in detecting small metal particles that are difficult to detect in the central area of ​​traditional circular pipes.

[0039] Furthermore, the cross-sectional shape of the flat detection section 12 is elliptical or rectangular, and the cross-sectional shape of the flat detection section 12 remains consistent along the material flow direction. The elliptical or rectangular flat cross-section design can more effectively guide the material through the detection area in a uniform and stable laminar flow state, avoiding turbulence or material accumulation that may be caused by irregular shapes. The consistency of the cross-sectional shape along the flow direction helps maintain the stability of the detection signal and prevents changes in the material flow state caused by abrupt changes in the cross-section from interfering with the detection results.

[0040] Furthermore, the irregularly shaped pipe 1 is made of non-metallic materials, effectively avoiding interference from the metal pipe itself on the sensing signal of the detection probe, ensuring the authenticity and accuracy of the detection signal. The flat detection section 12 has a uniform wall thickness and a smooth inner surface transition, reducing the frictional resistance between the material and the pipe wall, improving the conveying efficiency, and also reducing the possibility of residue and scaling, making it easier to clean and maintain.

[0041] Furthermore, the length of the flat detection section 12 is not less than the axial detection range of the detection probe, avoiding the situation where some material flows out without effective detection due to the detection section being too short, thus achieving full coverage of the detection area. The outer surface of the flat detection section 12 is provided with a positioning structure for alignment with the detection probe, ensuring that the probe's sensing area corresponds to the detection section in spatial position, reducing signal attenuation or detection blind spots caused by installation deviations, and improving the consistency and repeatability of the detection system.

[0042] In one embodiment, refer to the appendix to the specification. Figure 1 , Figure 2The circular inlet section 11, the flat detection section 12, and the circular outlet section 13 are separate structures. The circular inlet section 11 is an irregularly shaped adapter, with one end having a circular opening and the other end having a flat opening. The cross-sectional area of ​​the flat opening end is less than or equal to the cross-sectional area of ​​the flat detection section 12, and the flat opening of the circular inlet section 11 is detachably connected to one end of the flat detection section 12. The circular outlet section 13 is an irregularly shaped adapter, with one end having a circular opening and the other end having a flat opening. The cross-sectional area of ​​the flat opening end is less than or equal to the cross-sectional area of ​​the flat detection section 12, and the flat opening of the circular outlet section 13 is detachably connected to the other end of the flat detection section 12.

[0043] Furthermore, the circular inlet section 11 has a first connecting structure 111 at its flat opening end, and the corresponding end of the flat detection section 12 has a second connecting structure 121 that mates with the first connecting structure 111. The first connecting structure 111 and the second connecting structure 121 are connected by a plug-in fit and fixed by at least one of adhesive, snap-fit, or screw. The circular outlet section 13 has a third connecting structure 122 at its flat opening end, and the corresponding end of the flat detection section 12 has a fourth connecting structure 131 that mates with the third connecting structure 122. The third connecting structure 122 and the fourth connecting structure 131 are connected by a plug-in fit and fixed by at least one of adhesive, snap-fit, or screw. The circular inlet section 11 is made of metal and has a smooth inner surface transition; the circular outlet section 13 is also made of metal and has a smooth inner surface transition.

[0044] In this embodiment, by adopting a segmented irregular-shaped pipe structure, the circular conveying pipe in the metal detection area is partially changed to a flat cross-section. This allows metal foreign objects at the center to be closer to the induction coil when the material flows through the detection probe, effectively enhancing the response strength of the electromagnetic signal and thus improving the detection sensitivity and reliability of small-sized metal foreign objects. The use of a detachable irregular-shaped adapter connection method ensures smooth connection with the upstream and downstream circular pipes and facilitates disassembly and maintenance. Furthermore, the cross-sectional area of ​​the flat pipe section is not smaller than that of the original pipe, which can avoid pressure increases and material blockage caused by sudden changes in the flow path. The overall structure is simple and practical, and can significantly improve the detection accuracy and stability of the horizontal pipe-type metal detector without changing the main body of the original detection equipment.

[0045] According to another aspect of this utility model, reference is made to the appended specification. Figure 3The present invention further provides a metal detector, including the metal detector accuracy improvement mechanism described in any one of the above; the metal detector 2 is a horizontal pipeline metal detector, and a detection port 21 is formed inside its detection probe. The flat detection section 12 of the irregular pipe 1 is adapted to pass through the detection port 21. The circular inlet section 11 and the circular outlet section 13 at both ends of the irregular pipe 1 extend out of the detection port 21 by a preset length for connection to the pipeline of the external material conveying system 3.

[0046] In this embodiment, while retaining the original conveying and inspection process of the horizontal pipeline metal detector, the overall inspection performance and reliability can be improved simply by modifying the local structure passing through the inspection port 21; it has the advantages of simple structure, low modification cost and strong adaptability.

[0047] Furthermore, the detection port 21 of the metal detector 2 is height-adjustable. The detection probe includes a transmitting probe and a receiving probe arranged vertically, and the distance between them is the height of the detection port 21 of the metal detector 2. The detection height can be adjusted by setting an electric or manual adjustment mechanism to adjust the distance between the transmitting probe and the receiving probe. For example, the adjustment mechanism can adopt a threaded pair, a slider rail mechanism, an electric push rod, etc.

[0048] In this embodiment, the spatial range of the sensing area can be adjusted according to the different height dimensions of the flat detection section 12 in actual applications, or for different material characteristics and flow requirements, to ensure that the detection probe can maintain the best matching state with the flat detection section 12, so that the sensing field strength can fully cover the material flow layer, thereby maintaining optimal detection sensitivity under different operating conditions. Especially when production parameters change or different specifications of products need to be detected, adjustments can be made quickly without replacing hardware, significantly improving the versatility and ease of operation of the equipment.

[0049] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0050] It should be noted that the above embodiments can be freely combined as needed. The above are only optional embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A precision improvement mechanism for a metal detector, characterized in that, include: Irregularly shaped pipes; The irregularly shaped pipe includes a circular inlet section, a flat detection section, and a circular outlet section connected sequentially along the material flow direction. The circular inlet section and the circular outlet section are used to connect to an external material conveying system, and the flat detection section is used to pass through the detection probe of a metal detector.

2. The precision improvement mechanism for a metal detector according to claim 1, characterized in that, The height dimension of the flat detection section perpendicular to the material flow direction is smaller than its width dimension, and the height dimension of the flat detection section matches the height of the sensing area of ​​the detection probe of the metal detector.

3. The precision improvement mechanism for a metal detector according to claim 2, characterized in that, The cross-sectional shape of the flat detection section is elliptical or rectangular, and the cross-sectional shape of the flat detection section remains consistent along the material flow direction.

4. The precision improvement mechanism for a metal detector according to claim 3, characterized in that, The irregularly shaped pipe is made of non-metallic materials; The flat detection section has a uniform wall thickness and a smooth inner surface transition.

5. The precision improvement mechanism for a metal detector according to any one of claims 1-4, characterized in that, The circular inlet section, the flat detection section, and the circular outlet section are separate structures.

6. The precision improvement mechanism for a metal detector according to claim 5, characterized in that, The circular inlet section is an irregularly shaped adapter, with one end having a circular opening and the other end having a flat opening. The cross-sectional area of ​​the flat opening end is less than or equal to the cross-sectional area of ​​the flat detection section, and the flat opening of the circular inlet section is detachably connected to one end of the flat detection section. The circular outlet section is an irregularly shaped adapter, with one end having a circular opening and the other end having a flat opening. The cross-sectional area of ​​the flat opening end is less than or equal to the cross-sectional area of ​​the flat detection section, and the flat opening of the circular outlet section is detachably connected to the other end of the flat detection section.

7. The precision improvement mechanism for a metal detector according to claim 6, characterized in that, The circular inlet section has a first connecting structure at its flat opening end, and the corresponding end of the flat detection section has a second connecting structure that cooperates with the first connecting structure. The first connecting structure and the second connecting structure are connected by plug-in engagement and fixed by at least one of adhesive, snap-fit ​​or screw. The circular outlet section has a third connecting structure at its flat opening end, and the corresponding end of the flat detection section has a fourth connecting structure that cooperates with the third connecting structure. The third connecting structure and the fourth connecting structure are connected by plug-in fitting and fixed by at least one of adhesive, snap-fit ​​or screw.

8. The precision improvement mechanism for a metal detector according to claim 6, characterized in that, The circular inlet section is made of metal and has a smooth inner surface transition. The circular outlet section is made of metal and has a smooth inner surface transition.

9. A metal detector, characterized in that, Includes the metal detection machine precision enhancement mechanism as described in any one of claims 1-8; The metal detector is a horizontal pipe-type metal detector, and a detection port is formed inside its detection probe. The flat detection section of the irregularly shaped pipe is adapted to pass through the detection port.

10. The metal detector according to claim 9, characterized in that, The height of the detection port of the metal detector is adjustable.

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