Metal detection device

Abstract

The utility model relates to a metal detection device, which comprises a metal detection part, a conveying device and an electric cabinet, the electric cabinet is respectively connected with the metal detection part and the conveying device, and the conveying device is used for conveying a detected object to the metal detection part; the electric control box comprises a strong current area and a weak current area, the strong current area is provided with a strong current wire groove, the weak current area is provided with a weak current wire groove, and cable routing of the strong current area and the weak current area is isolated from each other through the strong current wire groove and the weak current wire groove. According to the metal detection device, the anti-electromagnetic interference capability and the detection precision of metal foreign matters are improved.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to product detection technical field, concretely relates to a metal detection device. BACKGROUND

[0002] Metal detection device, for example metal detection machine, is used for detecting whether product contains metal foreign matter in food, chemical industry and other industries, if product contains metal foreign matter, needs to pass through voltage signal collection and then control rejection mechanism action prevents the product from entering next process.

[0003] Metal detection machine usually uses metal detection head, the detection head has a transmitting coil and two equal receiving coils, oscillator forms high frequency magnetic field through the transmitting coil, two receiving coils in magnetic field are opposite in polarity. In the case that magnetic field is not disturbed by outside, the output voltage produced cancels each other out;Once there is metal foreign matter, the magnetic field balance is broken, and the rejection mechanism can be driven by collecting the different voltage signals.

[0004] The existing metal detection machine, the motor in the conveying device, the electrical components of the measured object conveying module and the like are prone to electromagnetic interference when running, which can destroy the magnetic field balance of the metal detection head, so that the metal detection head cannot work normally, and thus the judgment of metal foreign matter will be invalid, resulting in that unqualified products cannot be detected or qualified products are mistakenly rejected, both of which will affect product quality and cause economic losses. The current metal detection machine has the problem of low detection accuracy of metal foreign matter. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the present application is to provide a metal detection device that improves the anti-electromagnetic interference capability and the detection accuracy of metal foreign matter.

[0006] The technical solution adopted by the present application to solve the above technical problem is a metal detection device, comprising: a metal detection part, a conveying device and an electric control box, the electric control box is connected with the metal detection part and the conveying device, the conveying device is used for conveying the measured object to the metal detection part;The electric control box includes a strong current area and a weak current area, the strong current area is provided with a strong current wire slot, the weak current area is provided with a weak current wire slot, and the cable wiring of the strong current area and the weak current area is isolated through the strong current wire slot and the weak current wire slot.

[0007] In an embodiment of the present application, the strong current area includes an electrical switch and a circuit breaker, the electrical switch and the circuit breaker are connected through a power cable, and the weak current area includes a switching power supply;The metal detection device further comprises a first magnetic ring, which is arranged on the cable between the circuit breaker and the switching power supply.

[0008] In an embodiment of the present application, the strong current area includes a circuit breaker and a frequency converter, and the metal detection device further includes a second magnetic ring arranged on the cable between the circuit breaker and the frequency converter.

[0009] In an embodiment of the present application, the strong current area includes a frequency converter, the conveying device includes a motor, and the frequency converter and the motor are connected through a cable; and the metal detection device further includes a third magnetic ring arranged on the cable between the frequency converter and the motor.

[0010] In an embodiment of the present application, the frequency converter is arranged at the bottom of the strong current area.

[0011] In an embodiment of the present application, a first cable joint is arranged on the electric control box, and a second cable joint is arranged on the motor; the first cable joint and / or the second cable joint is an electromagnetic compatibility gland.

[0012] In an embodiment of the present application, the strong current area includes an electrical switch, a first cable joint is arranged on the electric control box, and a first grounding stud is arranged between the electrical switch and the first cable joint.

[0013] In an embodiment of the present application, the strong current area includes an AC terminal and a filter, and the weak current area includes a DC terminal and an electrical component assembly part.

[0014] In an embodiment of the present application, the conveying device includes a motor, a driving shaft, a driven shaft and a bearing part, the bearing part is arranged on the driving shaft and the driven shaft, the bearing part is used for bearing the measured object, the motor is connected with the driving shaft, the motor is used for driving the driving shaft to rotate, the driving shaft can drive the driven shaft to rotate through the bearing part; a second grounding stud is arranged on the driving shaft, and a third grounding stud is arranged on the driven shaft.

[0015] In an embodiment of the present application, the strong current cable slot and the weak current cable slot are arranged independently.

[0016] The technical scheme of the present application separates the electric control box into a strong current area and a weak current area, separates the strong current cable routing and the weak current cable routing through the strong current cable slot and the weak current cable slot, and can effectively prevent electromagnetic interference caused by strong current and weak current coupling; after the topological route design of the cable with the shortest total length is performed, the cable is accommodated in the cable slot, other areas in the electric control box are facilitated to be planned and utilized, necessary electrical components can be arranged in reasonable areas of the electric control box, and thus the influence of electromagnetic interference generated in the electric control box on the metal detection device is minimized.

[0017] The application is equivalent to an electrical design of a metal detection device to prevent internal and external electromagnetic interference. The application fully considers the detection characteristics of the metal detection device and the influence of electromagnetic interference in the actual use environment. By optimizing the electrical installation layout, electrical component selection, and static treatment, electromagnetic interference can be comprehensively suppressed, and the pass rate of electromagnetic compatibility testing is improved. The application can be popularized to other similar applications with high requirements for electromagnetic interference. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application are described in detail below with reference to the drawings, in which:

[0019] Figure 1 is a schematic diagram of the overall structure of a metal detection device according to an embodiment of the application;

[0020] Figure 2 is a bottom view of the metal detection device according to an embodiment of the application;

[0021] Figure 3 is a layout diagram of an electric control box according to an embodiment of the application;

[0022] Figure 4 is a schematic diagram of an electric control box according to an embodiment of the application;

[0023] Figure 5 is a schematic diagram of the position of a magnetic ring according to an embodiment of the application.

[0024] Explanation of reference numerals in the specific embodiments:

[0025] 100. Metal detection device; 110. Metal detection part; 120. Conveyor; 1201. Motor; 1202. Second cable joint; 1203. Driving shaft; 1204. Driven shaft; 1205. Bearing part; 1206. Second grounding stud; 1207. Third grounding stud; 1208. Base frame; 1209. Cable slot; 130. Electric control box; 131. Strong current area; 1311. Strong current slot; 1312. Electrical switch; 1313. Circuit breaker; 1314. Frequency converter; 1315. AC terminal; 1316. Filter; 1317. First grounding stud; 1318. Potentiometer; 132. Weak current area; 1321. Weak current slot; 1322. Switching power supply; 1323. DC terminal; 1324. Electrical component assembly part; 1325. Safety relay; 1326. Intermediate relay; 133. First cable joint; 210. First magnetic ring; 220. Second magnetic ring; 230. Third magnetic ring. Specific embodiments

[0026] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the detailed description of the present application is made below with reference to the accompanying drawings.

[0027] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application, however, can be practiced in a variety of ways other than those specifically described herein, and the present application is not limited to the specific embodiments described below.

[0028] As used in the description of the application and the claims the words "including" and "comprising" and variations such as "include", "includes", "comprise" and / or "comprises" will be understood to encompass the terms "consisting essentially of" and / or "consisting of".

[0029] In the description of the present application, it is to be understood that the orientation or positional words such as "front", "back", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom" and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0030] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0031] In addition, it should be noted that the use of "first", "second", and the like words to qualify parts is merely for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, although the terms used in the present application are selected from commonly known terms, some terms mentioned in the specification of the present application can be selected by the applicant according to his or her judgment, and the detailed meanings thereof are described in the relevant part of the description. In addition, the present application is required to be understood not only by the actual terms used, but also by the meaning implied by each term.

[0032] Hereinafter, embodiments of the present application will be described based on the drawings. However, the embodiments shown below are examples of a metal detection device that embodies the technical idea of the present application, and the metal detection device of the present application is not limited to the following content. Furthermore, in order to easily understand the scope of the claims, numbers corresponding to the members shown in the embodiments are assigned to the members shown in the "claims" and "summary of the invention" columns. However, the members shown in the claims are by no means limited to the members of the embodiments. In particular, the dimensions, materials, shapes, and relative arrangements of the constituent members described in the embodiments, and the like, are not intended to limit the scope of the present application to only these, but are merely illustrative.

[0033] However, the dimensions or positional relationships of the members shown in the respective drawings are sometimes exaggerated for clear illustration. Furthermore, in the following description, the same names and symbols represent the same or similar members, and detailed descriptions thereof are appropriately omitted. Furthermore, each element constituting the present application can be configured such that a plurality of elements are constituted by the same member to be used as a plurality of elements, or conversely, a plurality of members can share the function of one member. In addition, the content described in some of the embodiments, modes of implementation, and the like can be used in other embodiments, modes of implementation, and the like. In addition, in the present specification, "upper" is not limited to the case where it is in contact with the upper surface, but also includes the case where it is formed separately upward, and is also used with the meaning that an intervening layer can exist between layers.

[0034] The present application proposes a metal detection device that can be applied to a scenario of detecting whether a product contains a metal foreign object.

[0035] Figure 1 is a schematic diagram of the overall structure of a metal detection device according to an embodiment of the present application, Figure 3 is a layout diagram of an electric control box according to an embodiment of the present application. Reference is made to Figure 1 and Figure 3As shown, the metal detection device 100 of the embodiment includes a metal detection part 110, a conveying device 120, and an electric control box 130, the electric control box 130 is connected with the metal detection part 110 and the conveying device 120 respectively, the conveying device 120 is used to convey a measured object (not shown) to the metal detection part 110; the electric control box 130 includes a strong current area 131 and a weak current area 132, the strong current area 131 is provided with a strong current wire slot 1311, the weak current area 132 is provided with a weak current wire slot 1321, and the cable wiring of the strong current area 131 and the weak current area 132 is isolated from each other through the strong current wire slot 1311 and the weak current wire slot 1321.

[0036] Figure 4 Fig. 1 is a schematic diagram of an electric control box in an embodiment of the present application, referring to Figure 4 As shown, the strong current wire slot 1311 and the weak current wire slot 1321 are respectively identified by different lines. Exemplarily, the strong current wire slot 1311 and the weak current wire slot 1321 are formed by the staggered combination of horizontal slots and vertical slots, and the overall layout of the strong current wire slot 1311 and the weak current wire slot 1321 is not limited in the present application. The strong current wire slot 1311 and the weak current wire slot 1321 can be made of plastic or other materials.

[0037] Referring to Figure 3 As shown, exemplarily, the overall layout of the electric control box 130 of the present application strictly implements the separation of strong and weak currents, and is divided into left and right parts. The left half strong current area 131 can be set as an AC (Alternating Current) strong current area, and the strong current wire slot 1311 can be referred to as an AC wire slot. The right half weak current area 132 can be set as a DC (Direct Current) weak current area, and the weak current wire slot 1321 can be referred to as a DC wire slot. Various components capable of weakening electromagnetic interference are used in the electrical design of the electric control box 130, which will be introduced later.

[0038] The technical solution of the present application separates the strong current and the weak current of the electric control box 130, isolates the strong current cable wiring and the weak current cable wiring through the strong current wire slot 1311 and the weak current wire slot 1321, and can effectively prevent electromagnetic interference caused by strong and weak current coupling. After designing the topology route with the shortest total length of the cable, the cable is contained in the wire slot, which is convenient for planning and utilizing other areas in the electric control box 130, and necessary electrical components can be arranged in the reasonable area of the electric control box 130, so as to minimize the influence of the electromagnetic interference generated in the electric control box 130 on the metal detection device 100.

[0039] The application corresponds to the electrical design of the metal detection device 100 to prevent internal and external electromagnetic interference. The application fully considers the detection characteristics of the metal detection device 100 and the influence of electromagnetic interference in the actual use environment, and can comprehensively suppress electromagnetic interference and improve the pass rate of electromagnetic compatibility test by optimizing the electrical installation layout, electrical component selection, and static treatment. The application can be popularized to other similar applications with high requirements for electromagnetic interference.

[0040] Referring to Figure 4 As shown in some embodiments, the strong current wire slot 1311 and the weak current wire slot 1321 are independently arranged. Exemplarily, the strong current wire slot 1311 and the weak current wire slot 1321 are separated in space, and the two wire slots do not cross, that is, they do not intersect.

[0041] Referring to Figure 3 and Figure 4 As shown in some embodiments, the strong current area 131 includes an AC terminal 1315 and a filter 1316, and the weak current area 132 includes a DC terminal 1323 and an electrical component assembly part 1324. Exemplarily, the AC terminal 1315 is used to connect an alternating current power supply to realize input or output of electric energy; the DC terminal 1323 is used to connect a direct current power supply to provide stable direct current electric energy for the device. The filter 1316 can be set as a Chaffner filter, and the selection of the filter 1316 can be selected according to the frequency band generated by external interference and the frequency band of internal interference of the whole system to ensure that the interference frequency band can be filtered out and the purity of the power supply of the system is ensured.

[0042] Exemplarily, the application reserves the electrical component assembly part 1324 in the electrical design of the electric control box 130, which can be used to install a direct current reactor and other functional electrical components for resisting electromagnetic interference. The use of the direct current reactor can suppress the harmonic interference generated by the frequency converter 1314. Through the reservation of the electrical component assembly part 1324, in actual application, electrical components can be selected and installed in the electrical component assembly part 1324 as needed without changing the mechanical design, which is simple and easy to operate.

[0043] In actual application, the strong current area 131 can also be provided with a potentiometer 1318 for adjusting the amplitude and waveform of voltage, current and signal in the circuit. The weak current area 132 can also be provided with a safety relay 1325 and an intermediate relay 1326. The safety relay 1325 is used to provide safety protection to ensure the safety of the device and personnel, and the intermediate relay 1326 is used to transmit signals and realize the separation, conversion, amplification and protection of the circuit.

[0044] Continuing to refer to Figure 3 and Figure 4As shown, in some embodiments, the strong current area 131 includes an electrical switch 1312 and a circuit breaker 1313 connected by a power cable (not shown), and the weak current area 132 includes a switching power supply 1322; the metal detection device 100 further includes a first magnetic ring 210 arranged on the cable (not shown) between the circuit breaker 1313 (e.g. an air switch) and the switching power supply 1322. In some embodiments, the strong current area 131 includes a circuit breaker 1313 and a frequency converter 1314, and the metal detection device 100 further includes a second magnetic ring 220 arranged on the cable (not shown) between the circuit breaker 1313 and the frequency converter 1314.

[0045] Figure 5 is a schematic diagram of the position of the magnetic ring in an embodiment of the present application. Referring to Figure 4 and Figure 5 As shown, for example, the magnetic ring can be arranged on the cable as an anti-electromagnetic interference element. The electrical switch 1312 can be arranged as an isolating switch, which corresponds to the main switching power supply, the circuit breaker 1313 can be arranged as an air switch, and the first magnetic ring 210 can be arranged at the connection between the air switch and the main switching power supply 1322; the second magnetic ring 220 can be arranged at the connection between the air switch and the frequency converter 1314.

[0046] Referring to Figure 4 As shown, for example, in actual application, the incoming line path of the 220V AC power supply is connected to the electrical control box 130 from the left electrical switch 1312, the outgoing line of the electrical switch 1312 is connected to the circuit breaker 1313 (e.g. an air switch) via a filter 1316 from bottom to top, and then the magnetic ring is used to supply power to the frequency converter 1314. The design of the present application can make the total length of the strong current cable the shortest, and the lines before and after the filter are parallel without crossing, which ensures the effect of the filter 1316 and the magnetic ring, and can suppress external power supply noise.

[0047] In some embodiments, the frequency converter 1314 is arranged at the bottom of the strong current area 131. For example, by arranging the installation position of the frequency converter 1314 as close to the bottom of the electrical control box 130 as possible, the length of the motor cable in the electrical control box 130 can be shortened, and by adding a low-frequency suppression magnetic ring, the propagation of the line noise of the frequency converter 1314 can be suppressed.

[0048] Figure 2 is a bottom view of the metal detection device in an embodiment of the present application, referring to Figure 2 and Figure 4As shown, in some embodiments, the strong current area 131 includes a frequency converter 1314, the conveying device 120 includes a motor 1201, the frequency converter 1314 and the motor 1201 are connected through a cable (not shown); the metal detection device 100 further includes a third magnetic ring (not shown), which is arranged on the cable between the frequency converter 1314 and the motor 1201.

[0049] Reference Figure 5 As shown, exemplarily, the third magnetic ring 230 can be arranged at the connection between the frequency converter 1314 and the motor 1201. The first magnetic ring 210, the second magnetic ring 220, the third magnetic ring 230 and the cable in the application can be connected by a magnetic ring winding process, for example, in the case of a thinner cable, the cable can be wound several times (for example, 3 times) and then filled with the inside of the magnetic ring. Such arrangement can enhance the noise suppression effect, which can suppress the low-frequency interference on the power supply and also prevent the internal interference source from radiating externally. In actual application, the motor 1201 can adopt a direct current driving motor, which can generate smaller electromagnetic interference compared with a three-phase alternating current asynchronous motor.

[0050] Reference Figure 2 As shown, in some embodiments, the electric control box 130 is provided with a first cable joint 133, and the motor 1201 is provided with a second cable joint 1202; the first cable joint 133 and / or the second cable joint 1202 are electromagnetic compatibility (EMC) special gland heads. Exemplarily, EMC special gland heads can be used at the cable outlet of the electric control box 130 and the cable inlet of the motor 1201, and the special metal coating of the gland heads can ensure the contact between the cable shielding layer and the conductive shell, thereby reducing the electromagnetic radiation of the motor cable to the outside.

[0051] Reference Figure 2 And Figure 4 As shown, in some embodiments, the strong current area 131 includes an electrical switch 1312, the electric control box 130 is provided with a first cable joint 133, and a first grounding stud 1317 is arranged between the electrical switch 1312 and the first cable joint 133. Exemplarily, by arranging the first grounding stud 1317 near the power supply inlet and the strong current output, the multi-point grounding design can effectively and timely lead the interference to the ground.

[0052] The application uses filters 1316, magnetic rings, cable joints (such as EMC gland heads) and grounding studs in combination, which not only increases the anti-interference ability of the system but also reduces the influence of the magnetic field of the metal detection part 110 to the minimum.

[0053] Reference Figure 1As shown, in some embodiments, the conveying device 120 includes a motor 1201, a driving shaft 1203, a driven shaft 1204, and a carrier 1205 arranged on the driving shaft 1203 and the driven shaft 1204, the carrier 1205 being used to carry the measured object (not shown), the motor 1201 being connected with the driving shaft 1203 and used to drive the driving shaft 1203 to rotate, the driving shaft 1203 being capable of driving the driven shaft 1204 to rotate through the carrier 1205; the driving shaft 1203 is provided with a second grounding stud 1206, and the driven shaft 1204 is provided with a third grounding stud 1207.

[0054] Exemplarily, the carrier 1205 can be arranged as a belt. In actual application, since the metal detection device 100 usually uses a roller conveying device, static electricity is accumulated by the friction of the belt during the rotation of the roller, and thus the static electricity cannot be discharged in time through the connection between the bearing and the base frame 1208. In view of this, the electrical design of the present application adds an additional second grounding stud 1206 and a third grounding stud 1207 to the moving parts of the driving shaft 1203 and the driven shaft 1204 of the conveying device 120, which can be connected to the metal area of the base frame 1208 through a grounding braid. The flat conductor design of the grounding braid can quickly discharge the static electricity generated by friction, thereby reducing the influence of static electricity on the metal detection part 110.

[0055] The present application can quickly release the accumulated static electricity by designing a special grounding mode for the moving parts of the metal detection device 100, thereby preventing the adverse effects of static electricity on metal detection. The present application adds a filter 1316, a magnetic ring, a direct-current reactor, a grounding stud, and an EMC gland head and other functional components to the existing electrical layout, further reduces electromagnetic interference, and improves the detection accuracy of the metal detection device 100.

[0056] Reference Figure 2 As shown, in some embodiments, the base frame 1208 of the conveying device 120 is provided at the bottom with a cable slot 1209 for accommodating the cable wiring between the motor 1201 and the electric control box 130. Exemplarily, the cable slot 1209 can be arranged as a mesh. The present application can effectively organize the cable wiring between the motor 1201 and the electric control box 130 by arranging the cable slot 1209 at the bottom of the base frame 1208 of the conveying device 120, thereby ensuring a neat layout and facilitating maintenance and management.

[0057] Here, the metal detection device 100 of the present application is introduced in conjunction with the metal foreign body detection scenario in the lithium battery production line. For example, before the lithium battery pack is put into the assembly process, since there may be iron filings remaining on the battery pack during the previous production process, the lithium battery needs to be detected for metal foreign bodies. Due to the small difference in the characteristics of the lithium battery product itself and the metal of the iron filings, the requirements for preventing electromagnetic interference effects of the conveying mechanism are high, especially for moving parts such as motors and rollers. For both natural and man-made interference sources, the electrical design must provide effective electromagnetic protection.

[0058] For example, refer to Figure 3 As shown, the layout of the electric control box 130 is designed to separate strong and weak electricity, and a dedicated strong electricity area 131, AC terminal 1315, weak electricity area 132, and DC terminal 1323 are set up. The wire ducts in the strong and weak electricity areas avoid intersecting parts (such as Figure 4 The high-voltage wire trough 1311 and low-voltage wire trough 1321 shown in the figure do not intersect), and the inverter 1314 is installed as close to the bottom of the electric control box 130 as possible, and the length of the motor cable is minimized. Components such as magnetic rings, filters 1316 (such as Schaffner filters), DC reactors, and EMC glands are used to prevent electromagnetic interference. A dedicated grounding method using grounding bolts and grounding braided wire is used in areas where static electricity accumulates. This application reduces electromagnetic conduction and radiation effects through combined measures, ensuring the stability of the magnetic field of the metal detection unit 110 to the greatest extent, thereby improving the accuracy of metal detection.

[0059] This application is equivalent to the electrical design of the metal detection device 100 to prevent internal and external electromagnetic interference. It optimizes the electrical installation layout, electrical component selection, and electrostatic treatment, comprehensively suppresses electromagnetic interference, and improves the pass rate of EMC testing. By comprehensively using various components to prevent electromagnetic interference, this application not only increases the system's anti-interference capability but also minimizes the impact on the magnetic field of the metal detection unit 110. This application fully considers the detection characteristics of the metal detection device 100 and the impact of electromagnetic interference in the actual use environment, and can be extended to other similar applications with high electromagnetic interference requirements.

[0060] Although the above disclosure discusses some currently believed useful utility model embodiments through various examples, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the spirit and scope of the embodiments of the application. For example, although the system components described above can be implemented using hardware devices, they can also be implemented using software solutions, such as installing the described system on an existing server or mobile device.

[0061] Similarly, it should be noted that, in order to simplify the description of the present disclosure and thus facilitate understanding of one or more utility model embodiments, the foregoing description of the present embodiment sometimes combines multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of the present application requires more features than those recited in the claims. In fact, the features of an embodiment may be fewer than the total features of a single embodiment disclosed above.

[0062] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0063] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A metal detection device, characterized in that: include: A metal detection unit, a conveying device and an electrical control box, wherein the electrical control box is connected to the metal detection unit and the conveying device respectively, and the conveying device is used to convey the object to be detected to the metal detection unit; the electrical control box includes a high-voltage area and a low-voltage area, the high-voltage area is provided with a high-voltage wire trough, and the low-voltage area is provided with a low-voltage wire trough, and the cable routing of the high-voltage area and the low-voltage area is isolated from each other by the high-voltage wire trough and the low-voltage wire trough.

2. The metal detection device according to claim 1, wherein: The high-voltage area includes an electrical switch and a circuit breaker, which are connected via a power cable; the low-voltage area includes a switching power supply; the metal detection device also includes a first magnetic ring, which is arranged on the cable between the circuit breaker and the switching power supply.

3. The metal detection device according to claim 1, wherein: The high-voltage area includes a circuit breaker and a frequency converter. The metal detection device further includes a second magnetic ring, which is arranged on a cable between the circuit breaker and the frequency converter.

4. The metal detection device according to claim 1, wherein: The high-voltage area includes a frequency converter, the conveying device includes a motor, and the frequency converter and the motor are connected via a cable; the metal detection device also includes a third magnetic ring, and the third magnetic ring is arranged on the cable between the frequency converter and the motor.

5. The metal detection device according to claim 3 or 4, characterized in that: The frequency converter is arranged at the bottom of the high-voltage area.

6. The metal detection device according to claim 4, wherein: The electric control box is provided with a first cable connector, and the motor is provided with a second cable connector; the first cable connector and / or the second cable connector are electromagnetic compatibility (EMC) cable glands.

7. The metal detection device according to claim 1, wherein: The high-voltage area includes an electrical switch, a first cable connector is provided on the electrical control box, and a first grounding stud is provided between the electrical switch and the first cable connector.

8. The metal detection device according to claim 1, wherein: The strong current area includes AC terminals and filters, and the weak current area includes DC terminals and electrical component assembly parts.

9. The metal detection device according to claim 1, wherein: The conveying device includes a motor, a driving shaft, a driven shaft and a bearing part. The bearing part is arranged on the driving shaft and the driven shaft. The bearing part is used to carry the object to be measured. The motor is connected to the driving shaft. The motor is used to drive the driving shaft to rotate. The driving shaft can drive the driven shaft to rotate through the bearing part; a second grounding stud is provided on the driving shaft, and a third grounding stud is provided on the driven shaft.

10. The metal detection device according to claim 1, wherein: The strong wire duct and the weak wire duct are independently arranged.

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