An intelligent rainwater and sewage recycling and separation device for open-pit ore processing plants

Abstract

This utility model relates to an intelligent rainwater and wastewater recycling and separation device for an open-pit ore processing plant. It includes several drainage ditches, all converging into a main drainage ditch. A first turbidity meter, a first gate valve, and a second gate valve are installed in the main drainage ditch. A screen is located on one side near the second gate valve, and a first collection tank and a second collection tank are sequentially located on the other side. An overflow outlet is located on the side where the first and second collection tanks are connected. A first level gauge is installed in the first collection tank, and its outlet is connected to a thickener and a return water tank via a first transfer pump and pipeline. A first electric valve, a third electric valve, and a fourth electric valve are sequentially installed on the pipeline. A second level gauge and a second turbidity meter are installed in the second collection tank, and its outlet is connected to the thickener and the return water tank via a second transfer pump and pipeline. A second electric valve is installed on the pipeline. This utility model achieves effective separation, treatment, and reuse of rainwater and its contained solids through efficient and intelligent automated control.

Description

Technical Field

[0001] This utility model relates to the field of rainwater and sewage treatment technology in open-pit ore processing plants, specifically to an intelligent rainwater and sewage recycling collection and separation device for open-pit ore processing plants. Background Technology

[0002] Open-pit ore processing plants face the dual challenges of water scarcity and environmental pollution during production. On one hand, these plants are typically located in remote mountainous areas lacking stable water sources, while the ore processing requires large amounts of clean water. On the other hand, during the rainy season, rainwater carries significant amounts of metal-containing dust and mineral powder. If left untreated, this not only wastes resources but also pollutes the surrounding environment. Therefore, addressing these issues is crucial for the sustainable development of ore processing plants. This necessitates the design of an intelligent rainwater and wastewater recycling and separation device for open-pit ore processing plants, effectively separating and recycling dust and mineral powder from rainwater, and achieving rainwater reuse and clean discharge. Utility Model Content

[0003] This utility model provides an intelligent rainwater and sewage recycling collection and separation device for open-pit ore processing plants.

[0004] The specific technical solution of this utility model is as follows: An intelligent rainwater and wastewater recycling and separation device for an open-pit ore beneficiation plant includes several drainage ditches, all of which converge into a main drainage ditch. A first turbidity meter, a first gate valve, and a second gate valve are installed in the main drainage ditch. A screen is located on the side near the second gate valve, and a first collection tank and a second collection tank are sequentially located on the other side. An overflow outlet is located on the side where the first and second collection tanks are connected. A first level gauge is installed in the first collection tank, and its outlet is connected to a thickener and a return water tank via a first transfer pump and a pipeline. A first electric valve, a third electric valve, and a fourth electric valve are sequentially installed on the pipeline. A second level gauge and a second turbidity meter are installed in the second collection tank, and its outlet is connected to the thickener and the return water tank via a second transfer pump and a pipeline. A second electric valve is also installed on the pipeline.

[0005] Furthermore, preferably, the device also includes a PLC control cabinet, and the first turbidity meter, the second turbidity meter, the first gate valve, the second gate valve, the first level gauge, the second level gauge, the first transfer pump, the second transfer pump, the first electric valve, the second electric valve, the third electric valve, and the fourth electric valve are all electrically connected to the PLC control cabinet.

[0006] Furthermore, preferably, the device also includes a rain sensor, which is electrically connected to the PLC control cabinet.

[0007] The beneficial effects of this invention are as follows: This invention achieves effective separation, treatment, and reuse of rainwater from its contained solids through efficient and intelligent automated control of the rainwater flow between the collection tank, concentration tank, and recovery tank. It not only recovers metal dust and mineral powder from rainwater, reducing resource waste, but also recycles the treated rainwater, saving a significant amount of clean water resources. Simultaneously, this device avoids the direct discharge of high-turbidity rainwater, reducing pollution to the surrounding natural environment and meeting environmental protection requirements. Furthermore, through the PLC control cabinet and the concentrator's DCS system, the device achieves automated management, real-time monitoring of equipment operation status, reduced manual intervention, and improved operational stability and reliability. This not only reduces production costs but also increases production efficiency, providing strong support for the sustainable development of the concentrator. Attached Figure Description

[0008] Figure 1 This is a structural diagram of an intelligent rainwater and sewage recycling collection and separation device for an open-pit ore beneficiation plant according to the present invention. In the diagram: 1-Drainage ditch; 2-Main drainage ditch; 3-First collection tank; 4-Second collection tank; 5-Bar screen; 6-Overflow outlet; 7-Concentrator; 8-Return water tank; 9-Rain sensor; 10-PLC control cabinet; 21-First turbidity meter; 22-Second turbidity meter; 31-First gate valve; 32-Second gate valve; 41-First level gauge; 42-Second level gauge; 51-First transfer pump; 52-Second transfer pump; 61-First electric valve; 62-Second electric valve; 63-Third electric valve; 64-Fourth electric valve. Detailed Implementation

[0009] To make the technical problems and solutions solved by this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0010] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0011] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0012] like Figure 1 As shown, an intelligent rainwater and wastewater recycling and separation device for an open-pit ore beneficiation plant includes several drainage ditches 1, all of which converge into a main drainage ditch 2. A first turbidity meter 21, a first gate valve 31, and a second gate valve 32 are installed in the main drainage ditch 2. A grid 5 is provided on the side near the second gate valve 32, and a first collection tank 3 and a second collection tank 4 are sequentially provided on the other side. An overflow port 6 is provided on the side where the first collection tank 3 connects to the second collection tank 4. A first level gauge 41 is installed in the first collection tank 3, and its outlet is connected to a thickener 7 and a return water tank 8 via a first transfer pump 51 and a pipeline. A first electric valve 61, a third electric valve 63, and a fourth electric valve 64 are sequentially installed on the pipeline. A second level gauge 42 and a second turbidity meter 22 are installed in the second collection tank 4, and its outlet is connected to the thickener 7 and the return water tank 8 via a second transfer pump 52 and a pipeline. A second electric valve 62 is also installed on the pipeline.

[0013] To achieve efficient and intelligent rainwater and wastewater recycling, the aforementioned first turbidity meter 21, second turbidity meter 22, first gate valve 31, second gate valve 32, first level gauge 41, second level gauge 42, first transfer pump 51, second transfer pump 52, first electric valve 61, second electric valve 62, third electric valve 63, and fourth electric valve 64 are all electrically connected to the PLC control cabinet 10. Simultaneously, the PLC control cabinet is also connected to the DCS system of the open-pit ore dressing plant, allowing real-time monitoring of rainwater and wastewater collection and the operating status of each piece of equipment through the DCS system.

[0014] To facilitate the adjustment of rainwater and sewage collection based on rainfall intensity, the device is also equipped with a rainfall sensor 9, which is electrically connected to the PLC control cabinet. This allows for the adjustment of rainwater and sewage collection or discharge operations according to rainfall levels.

[0015] Working principle: The device is normally in a dormant state. When it rains, the rain sensor 9 detects the rainfall in the area and transmits the data to the PLC control system, at which point the device is activated and enters working mode. The rain sensor 9 transmits the rainfall data continuously for 5 minutes to the PLC control system, which compares it with the set value to determine whether it is light, moderate, or heavy rain.

[0016] 1. In the case of light rain, close the first gate valve 31 and open the second gate valve 32. Rainwater is initially filtered through the screen 5 to remove stones, branches, leaves, and other larger foreign matter, and flows into the first collection tank 3. When the rainwater in the first collection tank 3 exceeds the overflow port 6, the rainwater will continue to flow from the overflow port 6 into the second collection tank 4 for storage. During this process, the PLC control system will interact with the DCS system of the open-pit ore dressing plant to determine whether water needs to be supplied to the return water tank of the open-pit ore dressing plant.

[0017] (1) If it is determined that water needs to be supplied to the return water tank of the ore dressing plant, water can be supplied to the return water tank 8 when the liquid level of the first collection tank 3 reaches the set start liquid level. Specifically, the first turbidity meter 21 feeds back the turbidity data of the rainwater. If the turbidity data is less than the set value, the first electric valve 61 and the fourth electric valve 64 are opened, and the first delivery pump 51 is started to directly pump the rainwater into the return water tank 8 until the liquid level of the recovery tank 8 rises to the set value or the liquid level of the first collection tank 3 drops to the set stop liquid level. Then the first delivery pump 51 is stopped and the first electric valve 61 and the fourth electric valve 64 are closed. If the turbidity data is greater than the set value, the first electric valve 61 and the third electric valve 63 are opened, and the first delivery pump 51 is started to pump the rainwater into the thickening tank 7 first. The dust and mineral powder containing metal in the rainwater are recovered through thickening, and then the separated overflow liquid is transferred into the return water tank 8.

[0018] (2) If it is determined that no water needs to be supplied to the mineral processing recovery tank, the rainwater can be stored in the first collection tank 3 and the second collection tank 4 for later use. When supplying water to the recovery tank later, since the rainwater has been left to settle for a period of time, the turbidity data fed back by the first turbidity meter 21 and the second turbidity meter 22 should be checked first.

[0019] ① If the turbidity data fed back by both are less than the set value, the rainwater from the first collection tank 3 and the second collection tank 4 can be directly pumped into the return water tank 8. Specifically, it can be determined whether the first collection tank 3 and the second collection tank 4 are supplied with water individually or jointly, based on the required replenishment amount of the recovery tank 8 and the storage capacity of the first and second collection tanks. Among them, the operation of the first collection tank 3 being supplied with water individually is the same as (1), and the operation of the second collection tank 4 being supplied with water individually is the same as ②. The operation of the joint water supply is as follows: simultaneously open the first electric valve 61, the second electric valve 62 and the fourth electric valve 64, start the first delivery pump 51 and the second delivery pump 52, and pump the rainwater from both collection tanks into the return water tank 8. When the liquid level of the first collection tank 3 or the second collection tank 4 drops to the set stop liquid level, stop the corresponding delivery pump and close the electric valve on the corresponding pipeline. Otherwise, until the liquid level of the recovery tank 8 rises to the set value, simultaneously stop the first delivery pump 51 and the second delivery pump 52, and close the first electric valve 61, the second electric valve 62 and the fourth electric valve 64.

[0020] ② If the turbidity data fed back by the first turbidity meter 21 is greater than the set value, and the turbidity data fed back by the second turbidity meter 22 is less than the set value (since the rainwater in the second collection tank 4 overflows from the first collection tank 3, its turbidity is generally lower than that of the first collection tank 3), then the rainwater in the second collection tank 4 is first pumped into the return water tank 8. Specifically, the second electric valve 62 and the fourth electric valve 64 are opened, and the second delivery pump 52 is started to pump the rainwater directly into the return water tank 8 until the liquid level in the return tank 8 rises to the set value or the liquid level in the first collection tank 4 drops to the set stop liquid level, then the second delivery pump 52 is stopped, and the second electric valve 62 and the fourth electric valve 64 are closed.

[0021] ③ If the turbidity data from both collection tanks are greater than the set value, the rainwater from the first collection tank 3 and the second collection tank 4 is first pumped into the thickening tank 7. Metal dust and mineral powder contained in the rainwater are recovered through thickening, and the separated overflow is then transferred to the return water tank 8. Specifically, the supply of water from the first collection tank 3 and the second collection tank 4, or their combined supply, can be determined based on the required replenishment amount of the return water tank 8 and the storage capacity of the first and second collection tanks. The specific operation is similar to "① above," except that "the fourth electric valve 64 is closed, the third electric valve 63 is opened, and the rainwater is first pumped into the thickening tank 7."

[0022] 2. In the event of moderate or heavy rain, in addition to the situations described above for light rain, overflow of rainwater from both collection tanks is more likely. Therefore, timely access to or treatment of rainwater from the two collection tanks is particularly crucial.

[0023] (1) If it is determined that water needs to be supplied to the return water pool of the concentrator, the corresponding delivery pump should be started when the liquid levels of the first collection pool 3 and the second collection pool reach the set start liquid level, and the rainwater should be pumped into the thickening pool 7 (when the turbidity data is greater than the set value) or the return water pool 8 (when the turbidity data is less than the set value) for water supply.

[0024] (2) If it is determined that no water needs to be supplied to the mineral processing recovery pond, the turbidity data fed back by the first turbidity meter 21 should be checked first. (Due to the timeliness of the concentration treatment when the rainfall is heavy, the turbidity data fed back by the first turbidity meter 21 should be used to determine whether the excess rainwater should be discharged directly or treated before discharge. Therefore, the data fed back by the second turbidity meter 22 is not needed here.)

[0025] ①If the turbidity data fed back by the first turbidity meter 21 is less than the set value, after the first collection pool 3 and the second collection pool 4 are full, the second gate valve 32 is closed and the first gate valve 31 is opened to allow the excess rainwater to be discharged directly.

[0026] ② If the turbidity data fed back by the first turbidity meter 21 is greater than the set value, the rainwater should be pumped into the concentration tank 7 for concentration treatment when the liquid level of the first collection tank 3 reaches the set start liquid level, so as to ensure the recovery of metal dust and mineral powder contained in the rainwater, and at the same time ensure the cleanliness of the discharged rainwater and reduce environmental pollution.

[0027] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent rainwater and wastewater recycling and separation device for an open-pit ore processing plant, characterized in that: It includes several drainage ditches (1), all of which converge into a main drainage ditch (2). A first turbidity meter (21), a first gate valve (31), and a second gate valve (32) are installed in the main drainage ditch (2). A grating (5) is provided on the side near the second gate valve (32), and a first collection tank (3) and a second collection tank (4) are provided on the other side in sequence. An overflow outlet (6) is provided on the side where the first collection tank (3) is connected to the second collection tank (4). The first collection tank (3) is equipped with a first turbidity meter (21), a first gate valve (31), and a second gate valve (32). A level gauge (41) is connected to the thickener (7) and the return water tank (8) via a first transfer pump (51) and a pipeline. A first electric valve (61), a third electric valve (63), and a fourth electric valve (64) are installed on the pipeline in sequence. A second level gauge (42) and a second turbidity meter (22) are installed in the second collection tank (4). The outlet of the second level gauge (42) is connected to the thickener (7) and the return water tank (8) via a second transfer pump (52) and a pipeline. A second electric valve (62) is also installed on the pipeline.

2. The intelligent rainwater and sewage recycling collection and separation device for an open-pit ore beneficiation plant according to claim 1, characterized in that: The device also includes a PLC control cabinet (10), and the first turbidity meter (21), the second turbidity meter (22), the first gate valve (31), the second gate valve (32), the first level gauge (41), the second level gauge (42), the first transfer pump (51), the second transfer pump (52), the first electric valve (61), the second electric valve (62), the third electric valve (63), and the fourth electric valve (64) are all electrically connected to the PLC control cabinet (10).

3. The intelligent rainwater and sewage recycling collection and separation device for open-pit ore processing plants according to claim 2, characterized in that: The device also includes a rain sensor (9), which is electrically connected to the PLC control cabinet (10).

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