A mine unloading control and mineral transfer prompting system suitable for a stockyard

Abstract

The utility model discloses a kind of unload control and mineral transfer prompt system suitable for heap yard, it includes the first radar material level meter being arranged in the highest point of material of both sides directly above, second radar material level meter, first sound-light alarm, second sound-light alarm, third radar material level meter being arranged in the buffer ore bin of belt conveyor directly above;First camera and second camera are arranged in the upper side of ore heap, first radar material level meter, second radar material level meter, third radar material level meter, first sound-light alarm, second sound-light alarm are electrically connected PLC control cabinet;First camera and second camera are accessed to weak current box, video workstation in tailing filter press workshop central control room is also accessed to weak current box.Bidirectional belt conveyor has realized unattended control function, has reached the purpose of reducing staff and increasing efficiency.At the same time, it also greatly reduces the probability that staff contacts tailing dust, effectively guarantees the professional health of staff.

Description

Technical Field

[0001] This utility model relates to electrical control systems, and in particular to an unloading control and mineral transfer prompting system suitable for ore stockpiles. Background Technology

[0002] After the raw ore mined from the mine undergoes crushing, grinding, flotation, and concentrate dewatering at the beneficiation plant, the remaining tailings are sent to the tailings filter press for further dewatering. The dewatered tailings are first temporarily stored in a buffer bin, and then unloaded onto opposite sides of the buffer yard via a bidirectional belt conveyor. This belt conveyor requires a dedicated operator. When the tailings piled on one side approaches the conveyor drum, the operator immediately changes the conveyor's direction to unload in the other direction, while simultaneously notifying the loading operator to perform a secondary transfer of tailings on the full side to ensure continued unloading in that direction.

[0003] The problems with the above working environment are as follows: 1. The air in the operator's environment contains a certain amount of tailings dust, and long-term work in this environment poses certain occupational hazards to workers; 2. When tailings are piled up in one direction (the pile height is close to the bottom of the belt conveyor drum), the worker must switch the belt conveyor's operating direction in time. Otherwise, the excessively high tailings pile will carry the tailings to the opposite side of the belt, causing belt deviation, and may even lead to serious accidents such as belt tearing due to severe deviation, which seriously affect production. Especially during the middle and night shifts, operators are more likely to have inattentiveness or sleep on duty, which makes such problems more likely; 3. The machine operator in charge of tailings transfer cannot keep track of the tailings pile height in real time, which may lead to the belt conveyor stopping or even production being forced to stop due to untimely tailings transfer. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art and provide a ore unloading control and mineral transfer prompting system suitable for ore stockpiles.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A ore unloading control and mineral transfer indication system suitable for ore stockpiles includes a first radar level gauge, a second radar level gauge, a first audible and visual alarm, and a second audible and visual alarm, all positioned directly above the highest point of the material on both sides (the radar waves must avoid the obstruction of the first wheel of the belt conveyor); a third radar level gauge positioned directly above the buffer ore bin of the belt conveyor; and a first camera and a second camera positioned above both sides of the ore stockpile.

[0007] The first radar level gauge, the second radar level gauge, the third radar level gauge, the first audible and visual alarm, and the second audible and visual alarm are electrically connected to the PLC control cabinet.

[0008] The first and second cameras are connected to the low-voltage box, and the video workstation in the central control room of the tailings filter press workshop is also connected to the low-voltage box.

[0009] Furthermore, the central control room of the tailings filter press workshop is equipped with a DCS cabinet, which communicates with the DCS operator station inside the room and the PLC control cabinet on site.

[0010] Furthermore, a crystal oscillator remote control receiver is installed at a relevant external location of the PLC control cabinet and connected to the PLC cabinet, while a crystal oscillator remote control transmitter is installed in the driver's cab of the front-end installation machine.

[0011] Furthermore, the PLC control cabinet is equipped with a mode selection switch to select the local start / stop control mode and the unattended mode of the bidirectional belt conveyor. The local start / stop control mode is used for on-site equipment maintenance or debugging, while the unattended mode is used for normal production.

[0012] Furthermore, the first and second cameras are infrared spherical cameras.

[0013] The beneficial effects of this utility model are as follows: 1. The bidirectional belt conveyor realizes unattended operation control, achieving the goal of reducing manpower and increasing efficiency. At the same time, it significantly reduces the probability of employees being exposed to tailings dust, effectively ensuring the occupational health of employees.

[0014] 2. The bidirectional belt conveyor achieves accurate control of the material level switching direction. The tailings piled too high will be carried into the opposite side of the belt, causing belt deviation and even serious accidents such as belt tearing due to severe deviation, which will seriously affect production will no longer occur, effectively ensuring the normal operation of production.

[0015] 3. The front-loading machine operator can obtain information on the secondary transfer of tailings in a timely manner, ensuring the timely transfer of tailings and the normal operation of production.

[0016] 4. The belt conveyor is automatically controlled and started / stopped based on the material level detected by the radar level gauge and the PLC program. It will pause when the conditions for starting are not met, effectively preventing the belt conveyor from running idle, which has a good effect on energy saving and consumption reduction for enterprises. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram illustrating the principle of this utility model. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Reference Figure 1 A ore unloading control and mineral transfer indication system suitable for ore stockpiles includes a first radar level gauge 2, a second radar level gauge 3, a first audible and visual alarm 4, a second audible and visual alarm 5 installed above the ore stockpiles 16 on both sides, and a third radar level gauge 6 installed directly above the buffer ore bin 17 of the belt conveyor 1.

[0021] The first camera 7 and the second camera 8, the first radar level gauge 2, the second radar level gauge 3, the third radar level gauge 6, the first audible and visual alarm 4, and the second audible and visual alarm 5, which are installed above both sides of the ore pile 16, are electrically connected to the PLC control cabinet 9.

[0022] The first camera 7 and the second camera 8 are connected to the low-voltage box 10. The video workstation 12 of the central control room 11 of the tailings filter press workshop is also connected to the low-voltage box 10. The first camera 7 and the second camera 8 are infrared dome cameras.

[0023] Furthermore, the central control room 11 of the tailings filter press workshop is equipped with a DCS cabinet 13, which communicates with the DCS operator station 14 in the room and the PLC control cabinet 9 on site.

[0024] Furthermore, a crystal oscillator remote control receiver 15a is installed at a relevant external location on the PLC control cabinet 9, and the crystal oscillator remote control receiver 15a is equipped with a crystal oscillator remote control transmitter 15b.

[0025] In this embodiment, the PLC control cabinet 9 is equipped with a mode selection switch, which is used to select the local start-stop control mode and the unattended mode of the bidirectional belt conveyor 1. The local start-stop control mode is used for on-site equipment maintenance or debugging, and the unattended mode is used for normal production.

[0026] Specifically, the on-site PLC control cabinet 9 is equipped with a mode selection switch, which is used to select the local start-stop control mode and the unattended mode of the bidirectional belt conveyor 1. The local start-stop control mode is used for on-site equipment maintenance or debugging, while the unattended mode is used for normal production.

[0027] Relevant parameter description: The vertical distance from the lowest point of the belt conveyor roller to the ground of tailings buffer stockpile 16 is used as the measuring range H of the first / second radar level gauge. 12The vertical distance from the highest point of the tailings buffer bin 17 to the conveyor belt of the belt conveyor is taken as the measurement range H3 of the third radar level gauge 6; the real-time measured level value of the first radar level gauge 2 is H1, the real-time measured level value of the second radar level gauge 3 is H2, and the real-time measured level value of the third radar level gauge 6 is H4.

[0028] The relevant requirements for unattended operation mode and video surveillance of bidirectional belt conveyors are as follows:

[0029] A. Select the unattended mode using the mode selection switch. Relevant personnel will monitor the site via the first and second infrared spherical cameras on video workstation 12 in the tailings filter press workshop control room. After safety confirmation, a start command will be issued from the DCS operator station. Automatic operation will commence under the following conditions: ① After receiving the start command from the DCS, the first and second audible and visual alarms must sound for 10 seconds (informing those nearby that the belt conveyor is about to start); ② H4 ≥ 10% H3 (indicating that buffer bin 17 has material, preventing operation without material); ③ H1 ≤ 90% H3. 12 Or H2≦90%H 12 ④ If both H1 and H2 are ≤90% H 12 Then compare the two. ， Prioritize starting the direction with the lower material level.

[0030] B. After automatic operation, as the material level rises in the direction of operation, when the material level ≥ 95%H 12 When the material level in one direction is reached, operation in that direction is stopped. After a 3-second delay, belt conveyor 1 automatically switches to the other direction for unloading. This process continues in a cycle between the two directions until the material level in both directions is ≥95% of H. 12 If H4 < 10%H3 for 5 minutes (indicating a shortage in buffer ore bin 17 and no short-term upward trend in material level), belt conveyor 1 will stop operating. When conditions ②, ③, and ④ in requirement A are met again, the first and second audible and visual alarms must sound again for 10 seconds before belt conveyor 1 automatically resumes operation. The automatic operation function will only be canceled when belt conveyor 1 receives a stop signal from somewhere. To restart belt conveyor 1 automatically, it must start from requirement A again.

[0031] C. Stopping of the belt conveyor: ① Stop command or emergency stop command on the DCS operator station; ② Emergency stop signal issued by the relevant protection switch or field operation switch of the belt conveyor; ③ During the secondary transfer of tailings, after the front-loading machine driver discovers an abnormality, he sends an emergency stop signal to the belt conveyor 1 through the field crystal remote control (including crystal remote receiver 15a and handheld crystal remote transmitter 15b).

[0032] D. The data used in the control is set according to the current actual situation on site. If the working conditions change, relevant personnel can modify the corresponding data on the DCS operator station.

[0033] E. The central control room of the tailings filter press workshop can provide the following information to relevant operators and front-loading machine drivers: ① Real-time video workstation display of the ore pile status; ② Dynamic display of the ore pile height and material level data on the DCS operator station; ③ Operation status prompts for the bidirectional belt conveyor (including current, direction of rotation, running, paused, and abnormal information text prompts, etc.); ④ When the material level of one side of the ore pile is ≥95%H 12 At that time, the operator station's audio system will issue a voice prompt to remind the front-loading machine driver to carry out secondary transfer of tailings.

[0034] The bidirectional belt conveyor 1 achieves unattended operation, reducing manpower and increasing efficiency. It also significantly reduces the probability of employees being exposed to tailings dust, effectively ensuring their occupational health. The bidirectional belt conveyor enables accurate control of material level switching direction, preventing tailings from being carried onto the reverse side of the belt due to excessive tailings accumulation, causing belt misalignment, and even potentially leading to belt tearing due to severe misalignment. This effectively ensures the normal operation of production.

[0035] The front-end operator can obtain timely information on the secondary transfer of tailings, ensuring timely transfer of tailings and normal production operation. The belt conveyor is automatically controlled and started / stopped based on the material level detected by the radar level gauge and the PLC program. It pauses when the conditions for starting are not met, effectively preventing the belt conveyor from running idle and playing a good role in energy saving and consumption reduction for enterprises.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A system for controlling unloading ore and providing a notification system for mineral transfer in ore stockpiles, characterized in that, This includes a first radar level gauge, a second radar level gauge, a first audible and visual alarm, and a second audible and visual alarm, all located directly above the highest point of the material on both sides (the radar waves must avoid being blocked by the first wheel of the belt conveyor); and a third radar level gauge located in the buffer ore bin directly above the belt conveyor. The first and second cameras are installed above the two sides of the ore pile. The first radar level gauge, the second radar level gauge, the third radar level gauge, the first audible and visual alarm, and the second audible and visual alarm are electrically connected to the PLC control cabinet. The first and second cameras are connected to the low-voltage box, and the video workstation in the central control room of the tailings filter press workshop is also connected to the low-voltage box.

2. The ore unloading control and mineral transfer indication system suitable for ore stockpiles according to claim 1, characterized in that, The central control room of the tailings filter press workshop is equipped with a DCS cabinet, which communicates with the DCS operator station in the room and the PLC control cabinet on site.

3. The ore unloading control and mineral transfer indication system suitable for ore stockpiles according to claim 1, characterized in that, A crystal oscillator remote control receiver is installed at a relevant external location on the PLC control cabinet and connected to the PLC cabinet. A crystal oscillator remote control transmitter is installed in the driver's cab of the front-loading machine.

4. The ore unloading control and mineral transfer indication system suitable for ore stockpiles according to claim 1, characterized in that, The PLC control cabinet is equipped with a mode selection switch for selecting the local start / stop control mode and the unattended mode of the bidirectional belt conveyor. The local start / stop control mode is used for on-site equipment maintenance or debugging, while the unattended mode is used for normal production.

5. The ore unloading control and mineral transfer indication system suitable for ore stockpiles according to claim 1, characterized in that, The first and second cameras are infrared spherical cameras.

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