Explosion-proof intelligent iron removal system

Abstract

The utility model discloses an explosion-proof type intelligent iron removal system which comprises a metal detection device, an intrinsic safety power supply, a communication substation, a circuit breaker, a control cabinet and an iron remover, the metal detection device is of a frame type four-side detection structure, and the intrinsic safety power supply, the communication substation, the circuit breaker and the control cabinet are arranged outside a belt type conveying mechanism. An explosion-proof shell is arranged outside the intrinsic safety power source, the metal detection device, the communication substation and the circuit breaker are electrically connected with the intrinsic safety power source, the circuit breaker and the iron remover are electrically connected with the control cabinet, and when the metal detection device detects that metal objects pass through the belt type conveying mechanism, the metal detection device sends out an iron coming signal; the control cabinet provides excitation power supply for the de-ironing separator after receiving the operation signal of the circuit breaker, and the de-ironing separator starts to attract iron. The device is small in heat productivity, small in occupied space, convenient to maintain, capable of instantly improving magnetism, wide in metal detection range, higher in iron removal efficiency and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of metal detection, in particular to a flameproof intelligent iron removal system. Background Art

[0002] In recent years, with the rapid development of coal mine production and freight capacity in my country, the load on conveyor belts has become increasingly larger, and the requirements for work safety, reliability and economy have become increasingly higher. Since conveyor belt conveyors often use large-sized belt conveyors, they have large transport capacity, thick material layers and large raw coal particle size, in order to effectively remove the iron mixed in the raw coal and ensure effective coal passing space, it is necessary to first detect and then start the removal equipment. After the iron is removed, the raw coal is returned to the original unloading position to achieve the purpose of iron removal. However, various iron objects in the coal carbon damage the belt and destroy the crusher. The various iron objects in the coal flow have a serious impact. To a certain extent, the production safety of the mine is restricted. For weakly magnetic iron objects, especially those pressed in the coal seam, ordinary iron removers are powerless. Adding iron removers can effectively remove strong magnets. However, the existing conventional equipment is large-scale iron removers that work continuously, which often take up a large space, consume a lot of energy, and have high costs. The equipment wear and loss is large, which affects the service life of the equipment and the iron removal effect.

[0003] Currently, all magnetic separators on the market operate continuously, requiring them to run as long as the conveyor belt is running. This operating mode inevitably increases energy consumption for the user. Long-term operation reduces the life of the equipment, increases the frequency of spare parts replacement, and increases operating costs. Long-term operation causes the magnetic separator to heat up severely, significantly reducing the magnetic field strength and affecting the magnetic removal efficiency. Existing magnetic separators also take up a large amount of space, making on-site maintenance difficult and component replacement even more difficult. They are also ineffective at removing weakly magnetic iron objects. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a flameproof intelligent iron removal system with low heat generation, small space occupation, easy maintenance, instantaneous magnetic improvement, wide metal detection range and higher iron removal efficiency.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A flameproof intelligent iron removal system comprises: a metal detection device, an intrinsically safe power supply, a communication substation, a breaker, a control cabinet, and an iron remover. The metal detection device is a frame-type four-sided detection structure. The metal detection device and the iron remover are both arranged on the upper part of the belt conveyor mechanism. The intrinsically safe power supply, the communication substation, the breaker, and the control cabinet are arranged on the outside of the belt conveyor mechanism. The outsides of the intrinsically safe power supply and the breaker are both provided with explosion-proof casings. The metal detection device, the communication substation, and the breaker are respectively electrically connected to the intrinsically safe power supply. The breaker and the iron remover are respectively electrically connected to the control cabinet. When the metal detection device detects that a metal object passes through the belt conveyor mechanism, the metal detection device sends an iron signal. After receiving the breaker operation signal, the control cabinet provides excitation power to the iron remover. The iron remover starts the iron absorption operation. The control cabinet also transmits the action execution status to the communication substation.

[0007] In the above structure, the metal detection device includes a rectangular frame, a probe, an induction coil assembly, and a signal transmitting circuit, a signal processing circuit, and a signal receiving circuit connected to the induction coil assembly. There are multiple probes, and the multiple probes are evenly arranged along the circumference of the inner side of the rectangular frame. The metal detection device is matched with the conveyor belt of the belt conveyor mechanism 7, and the metal detection device is arranged along the moving direction of the conveyor belt of the belt conveyor mechanism.

[0008] In the above structure, the intrinsically safe power supply includes a first PCB board arranged in the explosion-proof housing, on which the intrinsically safe circuit, a power input interface, a power output interface and multiple communication ports are respectively provided. Shielded signal line holes, explosion-proof cable entry holes and explosion-proof cable outlet holes are provided on both sides of the explosion-proof housing corresponding to the communication ports, power input interface and power output interface.

[0009] In the above structure, the intrinsically safe power supply is respectively connected to the communication substation, circuit breaker, and metal detection device through the set shielded signal lines, and the intrinsically safe power supply is respectively connected to the communication substation, circuit breaker, metal detection device, control cabinet, iron remover, and belt conveyor mechanism through corresponding explosion-proof cables.

[0010] In the above structure, the communication substation includes a main body, which is a portable box structure. A second PCB board is provided inside the main body. An input device and / or adjustment button is provided on the front side of the main body. The input device is electrically connected to the second PCB board. The second PCB board includes a management circuit and a processor and a communication module connected to the management circuit. The input device is an explosion-proof touch screen.

[0011] In the above structure, the iron remover is an electromagnetic iron remover, the iron remover includes an iron absorption execution unit, and the iron remover is connected to the control cabinet through a provided power cable.

[0012] In the above structure, the breaker is provided with a wire interface and a communication port respectively. The breaker is communicatively connected to the control cabinet through a corresponding shielded signal line, and the breaker is electrically connected to the control cabinet through a corresponding power cable.

[0013] In the above structure, the control cabinet includes a controller arranged inside and a signal processing circuit and an alarm circuit connected to the controller.

[0014] The beneficial effects of the present invention are:

[0015] This utility model installs a communication substation and a circuit breaker between the metal detector and the iron remover, and controls the belt conveyor to operate intermittently through a control cabinet. When iron passes through the metal detector during belt operation, the belt conveyor operates intermittently, significantly reducing energy consumption, saving costs, and extending the service life of the equipment. The utility model generates little heat, takes up little space, is easy to maintain, can instantly increase magnetic properties to 2-3 times that of ordinary iron removers, has a wide metal detection range, and is more efficient in removing iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a metal detection device in an embodiment of the explosion-proof intelligent iron removal system of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the intrinsically safe power supply in the embodiment of the explosion-proof intelligent iron removal system of the present utility model;

[0018] Figure 3 This is a structural diagram of a communication substation in an embodiment of the explosion-proof intelligent iron removal system of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the circuit breaker in the embodiment of the explosion-proof intelligent iron removal system of the present utility model;

[0020] Figure 5 This is a control diagram of an embodiment of the explosion-proof intelligent iron removal system of the utility model;

[0021] Figure 6 This is a structural diagram of an embodiment of the explosion-proof intelligent iron removal system of the utility model.

[0022] In the figure, 1-metal detection device, 2-intrinsically safe power supply, 21-explosion-proof base, 22-explosion-proof housing, 3-communication substation, 4-breaker, 41-base, 42-box, 43-handle, 5-control cabinet, 6-magnetic remover, 7-belt conveyor mechanism, 8-instrument control cabinet. DETAILED DESCRIPTION

[0023] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0024] like Figure 1-6 As shown, a flameproof intelligent iron removal system includes: a metal detection device 1, an intrinsically safe power supply 2, a communication substation 3, a breaker 4, a control cabinet 5, and an iron remover 6. The metal detection device 1 is a frame-type four-sided detection structure. The metal detection device 1 and the iron remover 6 are both arranged on the upper part of the belt conveyor mechanism 7, the intrinsically safe power supply 2, the communication substation 3, the breaker 4, and the control cabinet 5 are arranged on the outside of the belt conveyor mechanism 7, and the outside of the intrinsically safe power supply 2 and the breaker 4 are all provided with an explosion-proof shell. The metal detection device 1, the communication substation 3, and the breaker 4 are respectively electrically connected to the intrinsically safe power supply 2, and the breaker 4 and the iron remover 6 are respectively electrically connected to the control cabinet 5. When the metal detection device 1 detects that there is a metal object passing through the belt conveyor mechanism 7, the metal detection device 1 sends an iron signal. After receiving the operation signal of the breaker 4, the control cabinet 5 provides excitation power to the iron remover 6. The iron remover 6 starts the iron absorption operation, and the control cabinet 5 transmits the action execution status to the communication substation 3.

[0025] Specifically, in this embodiment, the metal detection device 1 is a frame-type metal detector.

[0026] In a preferred embodiment of the present invention, the metal detection device 1 includes a rectangular frame, a probe, an induction coil assembly, and a signal transmitting circuit, a signal processing circuit, and a signal receiving circuit connected to the induction coil assembly. There are multiple probes, and the multiple probes are evenly arranged along the circumference of the inner side of the rectangular frame. The metal detection device 1 matches the conveyor belt of the belt conveyor mechanism 7, and the metal detection device 1 is arranged along the moving direction of the conveyor belt of the belt conveyor mechanism 7.

[0027] Specifically, in this embodiment, the metal detection device 1 is a frame-type metal detector, and a mounting cavity for fixing the probe and the induction coil assembly is provided in a rectangular frame.

[0028] Specifically, in this embodiment, a detector control cabinet 8 is provided outside the metal detection device 1 , and the detector control cabinet 8 is electrically connected to the metal detection device 1 and the intrinsically safe power supply 2 .

[0029] In a preferred embodiment of the present invention, the intrinsically safe power supply 2 includes a first PCB board disposed within an explosion-proof housing. The first PCB board is provided with an intrinsically safe circuit, a power input interface, a power output interface, and multiple communication ports. Shielded signal line holes, explosion-proof cable inlets, and explosion-proof cable outlets are provided on either side of the explosion-proof housing, corresponding to the communication ports, power input interface, and power output interface. The intrinsically safe power supply 2 is connected to the communication substation 3, the circuit breaker 4, and the metal detector 1 via shielded signal lines. The intrinsically safe power supply 2 is also connected to the communication substation 3, the circuit breaker 4, the metal detector 1, the control cabinet 5, the iron remover, and the belt conveyor 7 via corresponding explosion-proof cables.

[0030] Specifically, in this embodiment, the intrinsically safe power supply 2 is mainly composed of an explosion-proof base 21, an explosion-proof casing 22, an intrinsically safe circuit, and an introduction device. Its explosion-proof properties are explosion-proof and intrinsically safe. Its main function is to power the belt conveyor material metal detection device and provide an interface for data communication.

[0031] Specifically, in this embodiment, the intrinsically safe power supply is provided with three groups of output terminals, "H CAN L" is a communication data interface, and each output terminal is connected to three corresponding terminals of the communication substation 3, the circuit breaker 4, and the metal detection device 1 using a 4-core shielded signal cable, in any order. A handle 21 is provided on the upper part of the intrinsically safe power supply 2.

[0032] In a preferred embodiment of the present invention, the communication substation 3 includes a main body, which is a portable box structure. A second PCB board is provided inside the main body. An input device and / or adjustment button is provided on the front side of the main body. The input device is electrically connected to the second PCB board. The second PCB board includes a set management circuit and a processor and a communication module connected to the management circuit. The input device is an explosion-proof touch display screen.

[0033] Specifically, in this embodiment, the explosion-proof property of the communication substation 3 is intrinsically safe. Its main function is to set the excitation operation starting value ("threshold") of the iron remover 6, the "working time" of the excitation operation, etc., and compare it with the detection value sent by the metal detection device 1 to decide whether to issue relevant action instructions.

[0034] Specifically, in this embodiment, the 4-core shielded signal line connected to the communication substation 3 is connected to each terminal in the order of "red line connected to P+", "blue line connected to P-", "yellow line connected to CH", and "green line connected to CL".

[0035] In a preferred embodiment of the present invention, the iron remover 6 is an electromagnetic iron remover, the iron remover 6 includes an iron absorption execution unit, and the iron remover 6 is connected to the control cabinet 5 through a provided power cable.

[0036] Specifically, in this embodiment, the control cabinet 5 receives a 4-core shielded signal line from the breaker and receives a working instruction, and the iron remover 6 receives a 5-core power cable from the control cabinet and connects to the motor and coil interfaces respectively.

[0037] In a preferred embodiment of the present invention, the breaker 4 is respectively provided with a wire interface and a communication port. The breaker 4 is communicatively connected to the control cabinet 5 through a corresponding shielded signal line, and the breaker 4 is electrically connected to the control cabinet 5 through a corresponding power cable.

[0038] Specifically, in this embodiment, the breaker 4 includes a base 41, a box 42, and a handle 43. The base 41 and the box 42 are both explosion-proof structures. The handle 43 is fixedly arranged on the top of the base 41, and the base 41 and the box 42 are fixed with bolts.

[0039] Specifically, in this embodiment, the explosion-proof properties of the circuit breaker 4 are explosion-proof and intrinsically safe. Its main function is to act as a switching device between intrinsically safe electrical appliances and explosion-proof electrical appliances, and is responsible for executing the action instructions of the "communication substation". At the same time, it serves as a feedback channel for the action execution status of the control cabinet 5, and transmits the action execution status to the communication substation 3. The circuit breaker 4 serves as an action execution structure, and there are two groups of lines that need to be connected, namely "power supply / communication" and "action / feedback", which are respectively responsible for executing the action instructions from the communication substation 3 and feedback the action execution status of the iron remover 6 to the communication substation 3.

[0040] In a preferred embodiment of the present invention, the control cabinet 5 includes an internally arranged controller and a signal processing circuit and an alarm circuit connected to the controller.

[0041] Specifically, in this embodiment, after receiving the operation signal of the breaker 4, the control cabinet 5 provides excitation power supply and iron unloading belt power supply to the iron remover 6, and the iron remover 6 starts the iron absorption operation.

[0042] Specifically, in this embodiment, when ferrous metal passes through the metal detector on the conveyor belt (belt) of the running belt conveyor mechanism 7, the metal detector will generate a corresponding measurement signal and transmit it to the substation after converting it into a specific detection value; the communication substation 3 will compare this measurement value with the "preset" value ("threshold") input in advance for the operation start of the iron remover 6. When the measurement value is greater than the "preset" value, a normally closed start signal will be sent to the circuit breaker 4; since the intrinsically safe equipment cannot be directly connected to the explosion-proof equipment, a conversion is required using the circuit breaker 4. When the start signal sent by the communication substation 3 reaches the circuit breaker 4, the circuit breaker 4 will send an excitation operation signal to the control cabinet 5 through the built-in contact. At the same time, the circuit breaker 4 will transmit the feedback signal of whether the action is executed to the communication substation 3 in reverse order to record the operation status;

[0043] The wiring of the metal detection device 1 is centered around the intrinsically safe power supply 2. Since this power supply 2 is responsible for both powering the various devices and transmitting communication signals, each device component only needs to be connected to the intrinsically safe power supply 2 to complete the metal detection system 1. Because the actual installation location cannot be determined on-site, the device is provided with a pre-soldered 4-pin aviation plug and a pre-soldered 3-pin aviation plug. RVVP (or ZR-RVVP) shielded signal cable is used. The cable has four cores. If the cable exceeds four cores, only four cores will be used. The colors are red, blue, yellow, and green.

[0044] Specifically, in this embodiment, since the intrinsically safe equipment cannot be directly connected to the explosion-proof equipment, a conversion is required using the circuit breaker 4. When the start signal sent by the communication substation 3 reaches the circuit breaker 4, the circuit breaker 4 will send an excitation operation signal to the control cabinet 5 through the built-in contact. At the same time, the circuit breaker 4 will transmit the feedback signal of whether the action is executed in reverse to the communication substation 3. The metal detection device 1 always sends a stable signal. If iron is mixed in the conveyed material, after the iron passes through the metal detection device 1, the metal detection device 1 sends a stable signal and receives interference. The metal detection device 1 has a feedback signal to the control cabinet 5, and the control cabinet 5 transmits the signal to the communication substation 3. The communication substation 3 uses this signal to feedback whether the iron needs to be removed according to the previous setting. When the value is reached, the communication substation 3 sends a work instruction to the circuit breaker 4, and the circuit breaker 4 sends an action signal to the control cabinet 5. The host of the iron remover 6 is activated and returns to its original position after execution.

[0045] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A flameproof intelligent iron removal system, characterized in that: include: A metal detection device, an intrinsically safe power supply, a communication substation, a breaker, a control cabinet, and an iron remover. The metal detection device is a frame-type four-sided detection structure. The metal detection device and the iron remover are both arranged on the upper part of the belt conveyor mechanism. The intrinsically safe power supply, the communication substation, the breaker, and the control cabinet are arranged on the outside of the belt conveyor mechanism. The outside of the intrinsically safe power supply and the breaker are both provided with an explosion-proof casing. The metal detection device, the communication substation, and the breaker are respectively electrically connected to the intrinsically safe power supply. The breaker and the iron remover are respectively electrically connected to the control cabinet. When the metal detection device detects that a metal object passes through the belt conveyor mechanism, the metal detection device sends an iron signal. After receiving the breaker operation signal, the control cabinet provides excitation power to the iron remover. The iron remover starts the iron absorption operation, and the control cabinet transmits the action execution status to the communication substation.

2. The flameproof intelligent iron removal system according to claim 1 is characterized in that: The metal detection device includes a rectangular frame, a probe, an induction coil assembly, and a signal transmitting circuit, a signal processing circuit, and a signal receiving circuit connected to the induction coil assembly. There are multiple probes, and the multiple probes are evenly arranged along the circumference of the inner side of the rectangular frame. The metal detection device matches the conveyor belt of the belt conveyor mechanism, and the metal detection device is arranged along the moving direction of the conveyor belt of the belt conveyor mechanism.

3. The flameproof intelligent iron removal system according to claim 2 is characterized in that: The intrinsically safe power supply includes a first PCB board arranged in the explosion-proof housing, on which an intrinsically safe circuit, a power input interface, a power output interface and multiple communication ports are respectively provided. Shielded signal line holes, explosion-proof cable entry holes and explosion-proof cable outlet holes are provided on both sides of the explosion-proof housing corresponding to the communication ports, power input interface and power output interface.

4. The flameproof intelligent iron removal system according to claim 1 is characterized in that: The intrinsically safe power supply is respectively connected to the communication substation, circuit breaker, and metal detection device through the set shielded signal lines, and the intrinsically safe power supply is respectively connected to the communication substation, circuit breaker, metal detection device, control cabinet, iron remover, and belt conveyor mechanism through correspondingly set explosion-proof cables.

5. The flameproof intelligent iron removal system according to claim 2 is characterized in that: The communication substation includes a main body, which is a portable box structure. A second PCB board is provided inside the main body. An input device and / or adjustment button is provided on the front side of the main body. The input device is electrically connected to the second PCB board. The second PCB board includes a management circuit and a processor and a communication module connected to the management circuit. The input device is an explosion-proof touch display.

6. The flameproof intelligent iron removal system according to claim 1 is characterized in that: The iron remover is an electromagnetic iron remover, and the iron remover includes an iron absorption execution unit. The iron remover is connected to the control cabinet through a set power cable.

7. The flameproof intelligent iron removal system according to claim 1 is characterized in that: The breaker is respectively provided with a wire interface and a communication port. The breaker is communicatively connected to the control cabinet via a corresponding shielded signal line. The breaker is electrically connected to the control cabinet via a corresponding power cable.

8. The flameproof intelligent iron removal system according to claim 2 is characterized in that: The control cabinet includes a controller arranged inside and a signal processing circuit and an alarm circuit connected to the controller.

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