Early warning control system for liquid level of tailing pump pool of dressing plant

Abstract

The utility model relates to a concentration plant tailing pump pool liquid level early warning control system which comprises a tailing pump pool, and a first liquid level sensor, a second liquid level sensor, a third liquid level sensor and a fourth liquid level sensor are sequentially installed on the inner side wall of the tailing pump pool from bottom to top. The side wall, away from the first liquid level sensor, of the tailing pump pool communicates with a slurry conveying pipe I and a slurry conveying pipe II, the mounting position of the first liquid level sensor is higher than that of the slurry conveying pipe I and that of the slurry conveying pipe II, and the slurry conveying pipe I and the slurry conveying pipe II are each provided with an electric valve, a tailing pump and an electromagnetic flowmeter; the first liquid level sensor, the second liquid level sensor, the third liquid level sensor, the fourth liquid level sensor and the electromagnetic flowmeter are in signal connection with the programmable data processor, the electric valve and the tailing pump are in control connection with the control box, and the programmable data processor is in signal connection with the control box, the display screen and the audible and visual alarm. The system realizes high-low liquid level early warning of the tailing pump pool and conveying mode adjustment under different liquid level conditions, and ensures that the liquid level of the tailing pump pool and the inlet and outlet slurry flow are always balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of tailings pump pool liquid level control, in particular to a tailings pump pool liquid level early warning control system for a ore dressing plant. Background Art

[0002] The tailings pump pool in the beneficiation plant is used to collect tailings that have not been collected. It is at the end of the beneficiation process and is generally located far away from the main plant area and the duty room. The duty personnel often cannot grasp the changes in the liquid level of the tailings pump pool in time. Due to the limited effective volume of the tailings pump pool and the fact that the related equipment is not connected to the control system, the daily operation mainly relies on regular inspections by patrol personnel, who manually start and stop the tailings pump or adjust the pumping flow of the tailings pump based on experience to achieve the balance of the slurry flow in and out of the tailings pump pool. This manual inspection and control mode is not only labor-intensive, but also has the risk of omissions or inaccurate predictions. Especially when the beneficiation process is unstable or the tailings pump fails, it is easy to cause the slurry to overflow the pool and leak, bringing the risk of environmental pollution.

[0003] Therefore, the present application proposes a tailings pump pool liquid level early warning control system for a mineral processing plant, which unifies the decentralized manual inspections and carries out early warning and tailings pump linkage control by monitoring the changes in the tailings pump pool liquid level, thereby ensuring the balance between the tailings pump pool liquid level and the inlet and outlet slurry flow rates, and preventing the slurry from overflowing the pool and leaking out. Utility Model Content

[0004] The utility model provides a liquid level early warning control system for a tailings pump pool in a ore dressing plant.

[0005] The specific technical scheme of the utility model is: a tailings pump pool liquid level early warning control system of a mineral processing plant, comprising a tailings pump pool, wherein the inner side wall of the tailings pump pool is sequentially installed with a first liquid level sensor, a second liquid level sensor, a third liquid level sensor and a fourth liquid level sensor from bottom to top, a side wall of the tailings pump pool away from the first liquid level sensor is connected with a slurry pipe I and a slurry pipe II, the installation position of the first liquid level sensor is higher than the installation position of the slurry pipe I and the slurry pipe II, the slurry pipe I is sequentially installed with an electric valve I, a tailings pump I and an electromagnetic flowmeter I, and the slurry pipe II is sequentially installed with an electric valve II, a tailings pump II and an electromagnetic flowmeter II; the first liquid level sensor, the second liquid level sensor, the third liquid level sensor, the fourth liquid level sensor, the electromagnetic flowmeter I and the electromagnetic flowmeter II are connected with programmable data processor signals, the electric valve I, the tailings pump I, the electric valve II and the tailings pump II are control-connected with a control box, and the programmable data processor is connected with the control box, the display screen and the sound and light alarm signals.

[0006] Furthermore, preferably, the height difference between the first liquid level sensor and the slurry delivery pipe I and the slurry delivery pipe II is 20 cm.

[0007] Further, preferably, the second liquid level sensor, the third liquid level sensor and the fourth liquid level sensor are installed at 2 / 5 wall height, 3 / 5 wall height and 4 / 5 wall height of the inner wall of the tailings pump pool respectively.

[0008] The beneficial effects of the utility model are as follows: the utility model collects, analyzes and processes data such as the liquid level and pumping flow rate of the tailings pump pool monitored in real time through a programmable data processor, issues early warning alarms for high and low liquid levels, and feeds back the processed signals to the integrated control box of the tailings pump control system, so that it controls the tailings pump to make different adjustments under different liquid level conditions, ensuring that the liquid level of the tailings pump pool and the inlet and outlet slurry flows are always balanced, avoiding slurry overflow and polluting the environment. The entire early warning control system has a high degree of automation and strong adaptability, and the fine control of the five liquid level levels is also conducive to reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 It is a structural block diagram of the utility model;

[0011] In the figure: 1-tailings pump pool, 21-first liquid level sensor, 22-second liquid level sensor, 23-third liquid level sensor, 24-fourth liquid level sensor, 31-slurry pipe I, 32-slurry pipe II, 41-electric valve I, 42-electric valve II, 51-tailings pump I, 52-tailings pump II, 61-electromagnetic flowmeter I, 62-electromagnetic flowmeter II, 7-programmable data processor, 8-control box, 9-display screen, 10-sound and light alarm. DETAILED DESCRIPTION

[0012] In order to make the technical problems and technical solutions solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0013] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0014] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] like Figure 1 Figure 2 As shown, a tailings pump pool liquid level early warning control system of a mineral processing plant comprises a tailings pump pool 1, on the inner wall of the tailings pump pool 1 is sequentially installed with a first liquid level sensor 21, a second liquid level sensor 22, a third liquid level sensor 23 and a fourth liquid level sensor 24 from bottom to top, a slurry pipe I 31 and a slurry pipe II 32 are connected on the side wall of the tailings pump pool 1 away from the first liquid level sensor 21, the slurry pipe I 31 and the slurry pipe II 32 are in the same horizontal plane, the installation position of the first liquid level sensor 21 is 20 cm higher than the installation position of the slurry pipe I 31 and the slurry pipe II 32, the second liquid level sensor 22, the third liquid level sensor 23 and the fourth liquid level sensor 24 are respectively installed at 2 / 5 wall height, 3 / 5 wall height and 4 / 5 wall height of the inner wall of the tailings pump pool 1;

[0016] An electric valve I41, a tailings pump I51 and an electromagnetic flowmeter I61 are installed in sequence on the slurry delivery pipe I31, and an electric valve II42, a tailings pump II52 and an electromagnetic flowmeter II62 are installed in sequence on the slurry delivery pipe II32; the first liquid level sensor 21, the second liquid level sensor 22, the third liquid level sensor 23, the fourth liquid level sensor 24, the electromagnetic flowmeter I61 and the electromagnetic flowmeter II62 are connected to the programmable data processor 7 by signal, the electric valve I41, the tailings pump I51, the electric valve II42 and the tailings pump II52 are connected to the control box 8 for control, the programmable data processor 7 is connected to the control box 8, the display screen 9 and the sound and light alarm 10 by signal, and the tailings pump control system is integrated in the control box 8.

[0017] The programmable data processor 7 is used to receive data transmitted by the first liquid level sensor 21, the second liquid level sensor 22, the third liquid level sensor 23, the fourth liquid level sensor 24, the electromagnetic flowmeter I61, and the electromagnetic flowmeter II62, and process and analyze the data, and then control the display screen 9 to display the water level according to the set threshold value, control the operation of the sound and light alarm 10, and feedback the control operation of the tailings pump control system integrated control box 4, so as to control the electric valve I41, the tailings pump I51, the electric valve II42 and the tailings pump II52 to make corresponding adjustments.

[0018] When the early warning control system described in the utility model is in operation, the following six processing situations may occur:

[0019] (1) When the tailings pump I51 (or tailings pump II52) fails during operation, the programmable data processor 7 receives the current, frequency, flow rate and other data transmitted by the control box 4 and the electromagnetic flowmeter I61 (or electromagnetic flowmeter II62), processes and analyzes them, and then sends signals to the display screen 9 and the sound and light alarm 10. The display screen 9 displays the fault status of the corresponding tailings pump, and the sound and light alarm 10 runs an alarm signal to inform the duty personnel; on the other hand, the signal is returned to the control box 8, and the tailings pump control system sends a control signal of "close the faulty tailings pump (main) - close the corresponding electric valve (main) - open the other tail electric valve (standby) - open the corresponding tailings pump (standby)". If the operation is dual pump operation, when a single pump fails, the data and signal transmission process remains unchanged, but the tailings pump control system sends a control signal of "close the faulty tailings pump - close the corresponding electric valve".

[0020] (2) When the slurry level in the tailings pump pool 1 is lower than the first liquid level sensor 21, that is, the liquid level is less than the first threshold value, the programmable data processor 7 receives the signal transmitted by the first liquid level sensor 21, processes and analyzes it, and then sends a signal to the display screen 9 and the sound and light alarm 10. The display screen 9 displays the current ultra-low water level warning, and the sound and light alarm 10 runs an alarm to inform the on-duty personnel; on the other hand, combined with the signal transmitted by the electromagnetic flowmeter I 61 and / or the electromagnetic flowmeter II 62, after analysis and processing, it sends a signal to the control box 8, and adjusts the delivery frequency (flow) or shutdown of the tailings pump I 51 and / or the tailings pump II 52 through the integrated tailings pump control system.

[0021] (3) When the slurry level in the tailings pump pool 1 reaches the first liquid level sensor 21 but does not reach the second liquid level sensor 22, the programmable data processor 7 receives the signals transmitted by the first and second liquid level sensors, processes and analyzes them, and then sends signals to the control box 8, the display screen 9 and the sound and light alarm 10. The tailings pump control system controls the tailings pump to operate according to the set second threshold value and the delivery frequency (flow) range. A water level is displayed on the display screen 9, and the sound and light alarm 10 does not operate.

[0022] (4) When the slurry level in the tailings pump pool 1 reaches the second liquid level sensor 22 but does not reach the third liquid level sensor 23, the programmable data processor 7 receives the signals transmitted by the second and third liquid level sensors and records the time it takes for the liquid level to rise from the second liquid level sensor 22 to the third liquid level sensor 23. Before the time is recorded, the tailings pump is rapidly adjusted and operated according to the set third threshold value and the delivery frequency (flow rate) range, the display screen 9 displays the second water level, and the sound and light alarm 10 does not operate; after the time is recorded, the operating parameters of the tailings pump are adjusted according to the threshold value pre-set by the programmable data processor 7 and the flow rate of the electromagnetic flowmeter.

[0023] (5) When the slurry level in the tailings pump pool 1 reaches the third level sensor 23 but does not reach the fourth level sensor 24, the programmable data processor 7 receives the signals transmitted by the third and fourth level sensors and records the time when the level rises from the third level sensor 23 to the fourth level sensor 24. Before the time is recorded, the tailings pump is rapidly adjusted and operated according to the set fourth threshold value and the delivery frequency (flow rate) range, the display screen 9 displays the third water level, and the sound and light alarm 10 operates and alarms; after the time is recorded, the operating parameters of the tailings pump are adjusted according to the threshold value pre-set by the programmable data processor 7 and the flow rate of the electromagnetic flowmeter. If the recorded time is a long time range, the standby tailings pump is not started to transport the slurry, and only the delivery flow rate of the currently running tailings pump (main) is adjusted; if it is a short time range, the standby tailings pump is started in the order of "opening the electric valve (standby)-opening the corresponding tailings pump (standby)" to assist in the slurry delivery, and the programmable data processor 7 performs unified flow adjustment.

[0024] (6) When the slurry level in the tailings pump pool 1 reaches the fourth liquid level sensor 24, the programmable data processor 7 receives the signal transmitted by the fourth liquid level sensor 24, processes and analyzes it, and then starts the standby tailings pump for auxiliary slurry transportation in the order of "opening the electric valve (standby) - opening the corresponding tailings pump (standby)"; on the other hand, the time when the liquid level drops from the fourth liquid level sensor 24 to the third liquid level sensor 23 is recorded, and the programmable data processor 7 processes and analyzes the data received from the electromagnetic flowmeter, and then feeds back the signal to the control box 8 to adjust the flow balance transportation of the two tailings pumps. When the liquid level drops to the second liquid level sensor 22, the sound alarm 10 is turned off, and the display screen 9 displays the second water level. The programmable data processor 7 combines the electromagnetic flowmeter and the recorded time, and decides to turn off the slurry transportation of the standby tailings pump and its supporting equipment or adjust the transportation frequency (flow) of the dual tailings pumps according to the pre-set parameters.

[0025] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above, and any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tailings pump pool liquid level early warning control system for a mineral processing plant, comprising a tailings pump pool (1), characterized in that: The inner wall of the tailings pump pool (1) is sequentially mounted with a first liquid level sensor (21), a second liquid level sensor (22), a third liquid level sensor (23) and a fourth liquid level sensor (24) from bottom to top; a slurry delivery pipe I (31) and a slurry delivery pipe II (32) are connected on the side wall of the tailings pump pool (1) away from the first liquid level sensor (21); the installation position of the first liquid level sensor (21) is higher than the installation positions of the slurry delivery pipe I (31) and the slurry delivery pipe II (32); an electric valve I (41), a tailings pump I (51) and an electromagnetic flowmeter I (61) are sequentially mounted on the slurry delivery pipe I (31); the slurry delivery pipe II (32) An electric valve II (42), a tailings pump II (52) and an electromagnetic flowmeter II (62) are sequentially mounted thereon; the first liquid level sensor (21), the second liquid level sensor (22), the third liquid level sensor (23), the fourth liquid level sensor (24), the electromagnetic flowmeter I (61) and the electromagnetic flowmeter II (62) are signal-connected to a programmable data processor (7); the electric valve I (41), the tailings pump I (51), the electric valve II (42) and the tailings pump II (52) are control-connected to a control box (8); the programmable data processor (7) is signal-connected to the control box (8), the display screen (9) and the sound and light alarm (10).

2. A tailings pump pool liquid level early warning control system for a ore dressing plant according to claim 1, characterized in that: The height difference between the first liquid level sensor (21) and the slurry conveying pipe I (31) and the slurry conveying pipe II (32) is 20 cm.

3. The tailings pump pool liquid level early warning control system of a ore dressing plant according to claim 1, characterized in that: The second liquid level sensor (22), the third liquid level sensor (23) and the fourth liquid level sensor (24) are respectively installed at 2 / 5 of the wall height, 3 / 5 of the wall height and 4 / 5 of the wall height of the inner wall of the tailings pump pool (1).

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