CN109398833B - Electromagnetic induction detection device for metal residues in manual conveying emulsion explosive package - Google Patents
Electromagnetic induction detection device for metal residues in manual conveying emulsion explosive package Download PDFInfo
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- CN109398833B CN109398833B CN201811325910.1A CN201811325910A CN109398833B CN 109398833 B CN109398833 B CN 109398833B CN 201811325910 A CN201811325910 A CN 201811325910A CN 109398833 B CN109398833 B CN 109398833B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
- B65B57/18—Automatic control, checking, warning, or safety devices causing operation of audible or visible alarm signals
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Abstract
The invention provides an electromagnetic induction detection device for metal dross in manually conveyed emulsion explosive packages, which comprises a material hopper, a material trolley, a charging machine and an electromagnetic induction detection device for black metal in emulsion explosive, wherein the electromagnetic induction detection device for black metal in emulsion explosive comprises: the device comprises a detector, a signal processing unit, a response unit and an auxiliary unit, wherein the black metal detection unit is in communication connection with the signal processing unit, the signal processing unit is in communication connection with the response unit, when black metal is detected, a discharge hole of the material hopper is closed, the material is stopped from leaking downwards, and an audible and visual alarm gives an alarm. When the black metal is detected, the discharge hole of the material hopper is closed, the material is stopped to be discharged, the audible and visual alarm gives an alarm, the production line continues to work after the material with the black metal impurities is processed, the pure material flows into the charging machine to be stirred for packaging explosive rolls, and the black metal impurities in the explosive production can be conveniently and quickly detected to guarantee the safe production.
Description
Technical Field
The invention belongs to the field of emulsion explosive production, and particularly relates to an electromagnetic induction detection device for metal residues in manually conveyed emulsion explosive packages.
Background
The method comprises the steps that materials are guided into an artificial emulsion explosive transport vehicle from an emulsion explosive stirrer in the production process of manually conveying emulsion explosives, workers push the emulsion explosive transport vehicle to the side of an emulsion explosive packing device, the workers use a special shovel to shovel the emulsion explosives into an emulsion explosive packing machine, the emulsion explosive packing machine rotationally extrudes the emulsion explosives, and the emulsion explosives enter a packing bag. Foreign matter such as metal chips, screws, nuts, and bolt washers that are lost in the equipment after maintenance of the equipment are mixed in the process before packaging into cartridges. These hard, angular black metal inclusions, parts, and products are worked with the product and can cause explosions when metal objects are impacted or rubbed. Such accidents happen occasionally, so the detection of the black metal mixed in the emulsion explosive production line is an important guarantee for the safety production of the emulsion explosive.
Here, according to the law of electromagnetic induction, when the electric charges and the electric currents change with time, the electric field and the magnetic field generated by the electric charges and the electric currents in the space also change with time, so that the electric field and the magnetic field interact with each other: the changing magnetic field induces an electric field; the changing electric field also generates a magnetic field. When an alternating current is applied to the solenoid coil, a changing magnetic field is generated around the solenoid coil. Due to the eddy current effect, when metal particles pass through a solenoid coil through which an alternating current is supplied, an eddy current is formed inside the metal particles. According to lenz's law, the magnetic field generated by the induced current always hinders the change of the original magnetic flux, so that the direction of the magnetic field generated by the eddy current is opposite to that of the original magnetic field, the original magnetic field is weakened, and the equivalent inductance value of the inductance coil is reduced. Therefore, when the non-ferromagnetic metal particles pass through the inductance coil, the equivalent inductance of the coil is reduced due to the eddy current effect of the metal particles. When the ferromagnetic particles pass through the inductance coil, the particles are magnetized, the magnetized particles can generate a new magnetic field, and the magnetic induction intensity inside the particles is far greater than that generated by internal eddy current, so that when the ferromagnetic particles pass through the solenoid coil, the equivalent inductance value of the inductance coil is increased. Therefore, the black metal detector in the emulsion explosive production line is further designed by the inductance coil.
Disclosure of Invention
The invention provides the electromagnetic induction detection device for manually conveying the metal slag in the emulsion explosive package, which has the advantages of simple structure, convenient operation, safety and practicability.
The technical scheme adopted by the invention is as follows:
an electromagnetic induction detection device for manually conveying metal slag in emulsion explosive packages comprises a material hopper, a material trolley, a charging machine and an electromagnetic induction detection device for black metal in emulsion explosive,
black metal electromagnetic induction detection device in emulsion explosive includes: detector, signal processing unit, response unit and auxiliary unit, wherein:
the detector comprises a plurality of black metal detection units, wherein each black metal detection unit comprises an excitation coil, a detection coil, a coil fixing support and a protective shell, the excitation coil and the detection coil are wound on the coil fixing supports in a layered mode, the coil fixing supports are arranged in the protective shells, the excitation coil and the detection coil are in a rectangular nested structure, and the detection coil is arranged inside the protective shells;
the material hopper is a cone-shaped material hopper, the detector is arranged at the lower end of a discharge port of the material hopper, and the charging machine is arranged below the discharge port of the material hopper;
the signal processing unit includes: the device comprises an excitation signal generating module, an excitation signal electronic adjusting module, a detection signal electronic conditioning module, a detection signal collecting module, a detection signal analyzing module and a response signal output module;
the response unit includes: the discharge port sealing module and the accident alarm module;
the signal processing unit and the response unit are arranged in a control cabinet, and the control cabinet is arranged on one side of the material hopper;
the excitation signal generation module is provided with a program simulation sinusoidal signal of an ARM system, the sinusoidal signal is converted into an analog signal through the D/A output of the ARM system, then an excitation signal is formed, and the analog signal is input into the excitation signal electronic adjustment module;
the excitation signal electronic adjusting module adjusts an excitation signal to obtain an excitation signal, and the excitation signal is input into the excitation coil;
the exciting coil generates an exciting magnetic field by an exciting signal, and the exciting magnetic field covers a discharge hole of the material hopper;
the detection coil detects an excitation magnetic field and a response magnetic field generated after the black metal is excited by the excitation magnetic field to form induction current, and the induction current is input into the detection signal electronic conditioning module;
the detection signal electronic conditioning module conditions the induced current to obtain a conditioned detection signal and then inputs the conditioned detection signal into the detection signal acquisition module;
the detection signal acquisition module outputs a digital detection signal to the conditioned detection signal through A/D conversion of the ARM system and then inputs the digital detection signal into the detection signal analysis module;
the detection signal analysis module analyzes the digital detection signal to obtain a black metal response signal of the black metal on a discharge hole of the material hopper, and the black metal response signal is input into the response signal output module;
the response signal output module responds after receiving the black metal response signal: outputting a discharge port sealing signal and an accident alarm signal, inputting the discharge port sealing signal into a discharge port sealing module, and inputting the accident alarm signal into an accident alarm module;
when the discharge port sealing module receives a discharge port sealing signal, the discharge port of the material hopper is sealed, and when the accident alarm module receives an accident alarm signal, the sound-light alarm is started;
the auxiliary unit includes: the power module is electrically connected with the detector, the signal processing unit and the response unit respectively through the signal transmission lines, and the signal processing unit is electrically connected with the detector and the response unit respectively through the signal transmission lines.
Compared with the prior art, the invention has the beneficial effects that: manufacturing a detector according to an electromagnetic induction law, applying the detector to a black metal electromagnetic induction detection device in an emulsion explosive production line and installing the black metal electromagnetic induction detection device in a material hopper, adding the black metal electromagnetic induction detection device in the emulsion explosive production line on the basis of not changing the prior art, carrying out signal analysis along with the downward discharge of materials, and continuing the subsequent explosive roll packaging work if no black metal impurity is found; stopping the material from leaking when the black metal is detected, giving an alarm by equipment, continuing the work of the production line after the material with the black metal impurities is processed, and enabling the pure material to flow into a charging machine to be stirred for packaging explosive rolls. And the structure is simple, the operation is convenient, the safety and the practicability are realized, the dangerous loss is reduced, and the safety production is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the structure of the detector of the present invention installed in a material hopper;
FIG. 2 is a schematic diagram of a preferred detector configuration of the present invention;
FIG. 3 is a schematic view of the coil fixing bracket and the protective housing according to the present invention;
FIG. 4 is a schematic structural diagram of a black metal electromagnetic induction detection device in the emulsion explosive of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail with reference to examples.
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in figures 1-4, the electromagnetic induction detection device for the metal dross in the manually conveyed emulsion explosive package comprises a material hopper 1, a material trolley, a charging machine and an electromagnetic induction detection device for the black metal in the emulsion explosive 2,
black metal electromagnetic induction detection device 2 in emulsion explosive includes: a detector 3, a signal processing unit 4, a response unit 5 and an auxiliary unit 6, wherein:
the detector 3 comprises a plurality of black metal detection units 31, each black metal detection unit 31 comprises an excitation coil 311, a detection coil 312, a coil fixing support 313 and a protection shell 314, the excitation coil 311 and the detection coil 312 are wound on the coil fixing supports 313 in a layered mode, and the coil fixing supports 313 are arranged in the protection shells 314;
the detector 3 of the present invention preferably includes two black metal detecting units 31 arranged side by side, the two excitation coils 311 and the two detection coils 312 of the two black metal detecting units 31 are rectangular, the detection coils 312 are arranged in the excitation coils 311, and the two excitation coils 311 share one side of the rectangle.
The material hopper 1 is a conical material hopper 1, the detector 3 is arranged at the lower end of a discharge port of the material hopper 1, and the charging machine is arranged below the discharge port of the material hopper 1;
the signal processing unit 4 includes: an excitation signal generating module 41, an excitation signal electronic adjusting module 42, a detection signal electronic conditioning module 43, a detection signal collecting module 44, a detection signal analyzing module 45 and a response signal output module 46;
the response unit 5 includes: a discharge port closing module 51 and an accident alarm module 52;
the auxiliary unit 6 includes: the power supply module 61 and the signal transmission line module 62, the signal transmission line module 62 includes a plurality of signal transmission lines 621;
the black metal detection unit 31 is in communication connection with the signal processing unit 4, the signal processing unit 4 is in communication connection with the response unit 5, and the signal processing unit 4 is electrically connected with the detector 3 and the response unit 5 through a signal transmission line 621;
the excitation signal generation module 41 is provided with a program simulation sinusoidal signal of an ARM system, the sinusoidal signal is converted into an analog signal through the D/A output of the ARM system, then an excitation signal is formed, and the analog signal is input into the excitation signal electronic adjustment module 42;
the excitation signal electronic adjusting module 42 adjusts the excitation signal to obtain an excitation signal, and inputs the excitation signal into the excitation coil 311;
the exciting coil 311 generates an exciting magnetic field by an exciting signal, and the exciting magnetic field covers the discharge hole of the material hopper 1;
the detection coil 312 forms an induction current after detecting an excitation magnetic field and a response magnetic field generated after the black metal is excited by the excitation magnetic field, and the induction current is input into the detection signal electronic conditioning module 43;
the detection signal electronic conditioning module 43 conditions the induced current to obtain a conditioned detection signal, and then inputs the conditioned detection signal into the detection signal acquisition module 44;
the detection signal acquisition module 44 outputs a digital detection signal to the conditioned detection signal through the a/D conversion of the ARM system and inputs the digital detection signal to the detection signal analysis module 45;
the detection signal analysis module 45 analyzes the digital detection signal to obtain a black metal response signal of the black metal on the discharge hole of the material hopper 1, and the black metal response signal is input into the response signal output module 46;
the response signal output module 46 responds after receiving the black metal response signal: outputting a discharge port closing signal and an accident alarm signal, inputting the discharge port closing signal into a discharge port closing module 51, and inputting the accident alarm signal into an accident alarm module 52;
when the discharge port closing module 51 receives a discharge port closing signal, the discharge port of the material hopper 1 is closed, and when the accident alarm module 52 receives an accident alarm signal, the sound and light alarm is started.
The power supply module 61 is electrically connected to the detector 3, the signal processing unit 4 and the response unit 5 through signal transmission lines 621, respectively.
The signal processing unit 4 and the response unit 5 are arranged in a control cabinet, and the control cabinet is arranged on one side of the material hopper 1.
The work flow of the electromagnetic induction detection device for metal slag in the package of the emulsion explosive is manually conveyed: emulsion explosive in a workshop in an emulsion explosive production line is manually transported and loaded by a semi-automatic explosive loading machine. Therefore, materials after emulsification and sensitization are manually placed in the trolley by a rubber shovel and then pushed to the cartridge packaging workshop to be poured into the material hopper and naturally flow into the charging machine. The detector designed by the patent is arranged at the lower port of a material hopper, signal analysis is carried out in the process of discharging the emulsion explosive, and the subsequent explosive roll packaging work is continued if no black metal impurities are found; when the black metal is detected, the discharge port of the material hopper is closed, the material is stopped to be discharged, the audible and visual alarm gives an alarm, the production line continues to work after the material with the black metal impurities is processed, and the pure material flows into the charging machine to be stirred for packaging explosive rolls.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. Electromagnetic induction detection device of metal dregs in artifical transport emulsion explosive packing, including hopper, material dolly and charge machine, its characterized in that still includes: an electromagnetic induction detection device for black metal in emulsion explosive,
black metal electromagnetic induction detection device in emulsion explosive includes: detector, signal processing unit, response unit and auxiliary unit, wherein:
the detector comprises a plurality of black metal detection units, wherein each black metal detection unit comprises an excitation coil, a detection coil, a coil fixing support and a protective shell, the excitation coil and the detection coil are wound on the coil fixing supports in a layered mode, the coil fixing supports are arranged in the protective shells, the excitation coil and the detection coil are in a rectangular nested structure, and the detection coil is arranged inside the protective shells;
the material hopper is a cone-shaped material hopper, the detector is arranged at the lower end of a discharge port of the material hopper, and the charging machine is arranged below the discharge port of the material hopper;
the signal processing unit includes: the device comprises an excitation signal generating module, an excitation signal electronic adjusting module, a detection signal electronic conditioning module, a detection signal collecting module, a detection signal analyzing module and a response signal output module;
the response unit includes: the discharge port sealing module and the accident alarm module;
the signal processing unit and the response unit are arranged in a control cabinet, and the control cabinet is arranged on one side of the material hopper;
the excitation signal generation module is provided with a program simulation sinusoidal signal of an ARM system, the sinusoidal signal is converted into an analog signal through the D/A output of the ARM system, then an excitation signal is formed, and the analog signal is input into the excitation signal electronic adjustment module;
the excitation signal electronic adjusting module adjusts an excitation signal to obtain an excitation signal, and the excitation signal is input into the excitation coil;
the exciting coil generates an exciting magnetic field by an exciting signal, and the exciting magnetic field covers a discharge hole of the material hopper;
the detection coil detects an excitation magnetic field and a response magnetic field generated after the black metal is excited by the excitation magnetic field to form induction current, and the induction current is input into the detection signal electronic conditioning module;
the detection signal electronic conditioning module conditions the induced current to obtain a conditioned detection signal and then inputs the conditioned detection signal into the detection signal acquisition module;
the detection signal acquisition module outputs a digital detection signal to the conditioned detection signal through A/D conversion of the ARM system and then inputs the digital detection signal into the detection signal analysis module;
the detection signal analysis module analyzes the digital detection signal to obtain a black metal response signal of the black metal on a discharge hole of the material hopper, and the black metal response signal is input into the response signal output module;
the response signal output module responds after receiving the black metal response signal: outputting a discharge port sealing signal and an accident alarm signal, inputting the discharge port sealing signal into a discharge port sealing module, and inputting the accident alarm signal into an accident alarm module;
when the discharge port sealing module receives a discharge port sealing signal, the discharge port of the material hopper is sealed, and when the accident alarm module receives an accident alarm signal, the sound-light alarm is started;
the auxiliary unit includes: the power module is electrically connected with the detector, the signal processing unit and the response unit respectively through the signal transmission lines, and the signal processing unit is electrically connected with the detector and the response unit respectively through the signal transmission lines.
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| CN201811325910.1A CN109398833B (en) | 2018-11-08 | 2018-11-08 | Electromagnetic induction detection device for metal residues in manual conveying emulsion explosive package |
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| CN201811325910.1A CN109398833B (en) | 2018-11-08 | 2018-11-08 | Electromagnetic induction detection device for metal residues in manual conveying emulsion explosive package |
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| CN111505726B (en) * | 2020-04-09 | 2023-03-10 | 中北大学 | Device and method for detecting pipeline liquid magnetic dissimilar medium based on symmetric magnetic excitation structure |
| CN113184483B (en) * | 2021-04-22 | 2023-06-23 | 武汉菲舍控制技术有限公司 | Conveyer belt tearing prevention system and early warning method |
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| GB9014496D0 (en) * | 1990-06-29 | 1990-08-22 | Safeline Ltd | Metal detectors |
| JP2002296099A (en) * | 2001-03-30 | 2002-10-09 | Anritsu Corp | Combined meter |
| CN201777435U (en) * | 2010-08-27 | 2011-03-30 | 深圳市新泰医药有限公司 | Granule packaging machine with metal detector mounted at feeding opening |
| EP2544027A1 (en) * | 2011-07-08 | 2013-01-09 | Mettler-Toledo Safeline Limited | Metal detector for production and packaging lines |
| CN104230607A (en) * | 2014-09-16 | 2014-12-24 | 河北晓进机械制造股份有限公司 | Automatic emulsion explosive charging machine and explosive charging method |
| CN104407043B (en) * | 2014-12-03 | 2017-08-01 | 江苏大学 | Steel cord on-line detection device of defects and its detection method based on electromagnetic induction |
| CN105487125A (en) * | 2015-12-25 | 2016-04-13 | 北京大学 | Magnetic metal detection sensor |
| CN108227019A (en) * | 2018-01-31 | 2018-06-29 | 成都精位科技有限公司 | Metal detector and metal detecting system |
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