Water quality monitoring and automatic sampling device

Abstract

The utility model discloses a water quality monitoring and automatic sampling device belongs to mineral processing technology field, solved the water body in water tank easy stratification influence monitoring data representativeness, suspended solid causes sensor incrustation, artificial sampling exists the problem of hysteresis. The utility model discloses a water tank, the water tank is fixed with the inlet pipe to the oblique of bottom side wall, the water tank is fixed with the outlet pipe to the top side wall, and the water tank bottom sets up the slope bottom plate. The lowest point of water tank side wall sets up the blowdown structure, and the water tank still is connected with the sampling structure. Through the oblique water inlet and the upper layer water outlet agitating, eliminate water body stratification, ensure the full layer representativeness of monitoring data, the blowdown structure design prolongs the service life of sensor, reduces the maintenance demand, and simultaneously based on threshold trigger's abnormal early warning mechanism, can real -time capture the sudden water quality change, avoids the risk of process out of control, thereby realizes the cooperative promotion of monitoring accuracy, equipment reliability and emergency response ability, provides reliable data support for the automatic control of mineral processing process.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing technology, specifically relating to a water quality monitoring and automatic sampling device. Background Technology

[0002] In mineral processing, water quality parameters (such as pH and conductivity) directly affect the effectiveness of flotation reagents, equipment lifespan, and tailings safety. Existing water quality monitoring and sampling technologies suffer from the following problems: improperly designed water tank inlet locations can easily lead to stratification of the middle and lower water layers, affecting the representativeness of monitoring data; suspended solids deposition exacerbates sensor scaling risks, resulting in high maintenance costs; and manual sampling exhibits significant lag, failing to promptly detect sudden water quality anomalies (such as a sharp increase in conductivity). These problems restrict the automated control and resource utilization efficiency of the mineral processing process. Utility Model Content

[0003] The purpose of this invention is to provide a water quality monitoring and automatic sampling device, which aims to solve the problems in the above-mentioned background technology, such as water in the tank being prone to stratification affecting the representativeness of monitoring data, suspended solids causing scaling on the sensor, and the lag in manual sampling.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A water quality monitoring and automatic sampling device includes a water tank, an inlet pipe fixed obliquely to the bottom side wall of the water tank, an outlet pipe fixed to the top side wall of the water tank, the inlet pipe and the outlet pipe being arranged diagonally opposite to the water tank, a sloping bottom plate being provided at the bottom of the water tank, a sewage discharge structure being provided at the lowest point of the side wall of the water tank, and a sampling structure being connected to the water tank.

[0005] Furthermore, the sampling structure includes a sampling pipe located on the lower side wall of the water tank on the same side as the outlet pipe, a sampling solenoid valve is installed on the sampling pipe, the sampling pipe is connected to a sample trough, a discharge pipe is installed at the lowest point of the side wall of the sample trough, and a discharge ball valve is installed on the discharge pipe.

[0006] Furthermore, the sewage discharge structure includes a sewage discharge pipe located at the lowest point of the side wall of the water tank on the same side as the inlet pipe, and a sewage discharge solenoid valve is installed on the sewage discharge pipe.

[0007] Furthermore, the top cover of the water tank has two holes, through which a pH sensor and a conductivity sensor are respectively inserted.

[0008] Furthermore, a base is provided at the lower end of the water tank and sample tank.

[0009] The beneficial effects of this utility model are as follows: By adopting a design scheme of side-sloping downward water inlet and upper water outlet, the difference in water flow velocity within the water tank is effectively reduced, forming a continuous flowing water state and eliminating water stratification, thereby significantly improving the consistency and accuracy of water quality monitoring data; the sloping bottom plate of the water tank facilitates sediment concentration, and the regular discharge solenoid valve improves sediment removal efficiency; the sensor probe, based on a threshold-triggered abnormal early warning mechanism, can capture sudden water quality changes in real time, avoiding the risk of process runaway, thus achieving a synergistic improvement in monitoring accuracy, equipment reliability, and emergency response capabilities, providing reliable data support for the automated control of the mineral processing process. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the structure of this utility model.

[0011] In the diagram, 1-inlet pipe; 2-water tank; 3-outlet pipe; 4-sloping base plate; 5-drain pipe; 6-drain solenoid valve; 7-pH sensor; 8-conductivity sensor; 9-sampling tube; 10-sampling solenoid valve; 11-sample tank; 12-sampling tube; 13-sampling ball valve; 14-base. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0013] like Figures 1 to 2 As shown, a water quality monitoring and automatic sampling device includes a water tank 2. An inlet pipe 1 is fixed obliquely to the bottom side wall of the water tank 2, and an outlet pipe 3 is fixed to the top side wall of the water tank 2. The inlet pipe 1 and the outlet pipe 3 are arranged diagonally opposite each other in the water tank 2. A sloping bottom plate 4 is provided at the bottom of the water tank 2. A sewage discharge structure is provided at the lowest point of the side wall of the water tank 2. The water tank 2 is also connected to a sampling structure.

[0014] Specifically, the sampling structure includes a sampling pipe 9 installed on the lower side wall of the water tank 2 on the same side as the outlet pipe 3. A sampling solenoid valve 10 is installed on the sampling pipe 9 to facilitate automatic sampling. The sampling pipe 9 is connected to a sample trough 11. A discharge pipe 12 is installed at the lowest point of the side wall of the sample trough 11. A discharge ball valve 13 is installed on the discharge pipe 12 to discharge the collected water sample.

[0015] Specifically, the sewage discharge structure includes a sewage discharge pipe 5 located at the lowest point of the side wall of the water tank 2 on the same side as the inlet pipe 1, and a sewage discharge solenoid valve 6 is installed on the sewage discharge pipe 5 for periodically cleaning sediment.

[0016] Specifically, the top cover of water tank 2 has two holes, through which a pH sensor 7 and a conductivity sensor 8 are respectively inserted to monitor water quality parameters in real time.

[0017] Specifically, a base 14 is provided at the lower end of the water tank 2 and the sample tank 11 to support the main structure of the entire device.

[0018] In practical applications, the inlet pipe 1 is a circular hollow pipe. One end of it is welded obliquely to the side wall of the water tank 2, which is more than 10cm away from the bottom plate of the water tank 2. The other end is connected to the main pipeline being monitored. During water quality monitoring and automatic sampling, the water flows from the inlet pipe 1 and impacts the lower side wall of the water tank 2 at an oblique angle. The sloping bottom plate 4 of the water tank 2 has a certain inclination angle, which makes the water flow form a vortex, enhancing the fluidity of the lower layer of water in the water tank 2. The water then flows out through the outlet pipe 3 on the upper side wall of the water tank 2. This process makes the water flow from bottom to top to form flowing water, effectively avoiding water stagnation.

[0019] The probes of pH sensor 7 and conductivity sensor 8 are inserted into the middle position of the water tank 2, more than 20cm from the bottom, through two reserved holes on the top cover of the water tank 2. The upper part is fixed to the water tank cover by flange and bolts to ensure the stability of the sensors and easy replacement. The bottom of the water tank 2 is designed as a 10-15° sloping bottom plate 4. The lowest point of the side wall of the water tank 2 is equipped with a drain pipe 5 and a drain solenoid valve 6, which concentrates the sediment. The drain solenoid valve 6 opens periodically to drain the sediment, improves the efficiency of sediment removal, and avoids the interference of suspended matter on pH sensor 7 and conductivity sensor 8, thus extending the life of the sensors.

[0020] Both the pH sensor 7 and the conductivity sensor 8 probes are connected to the control system. When the pH value or conductivity exceeds the preset threshold, the signal line transmits the sensor data to the control system. The control system then triggers the sampling solenoid valve 10 to open for 5-10 seconds. The water flows through the sampling tube 9 to guide the abnormal water sample into the sample tank 11. The sampling flow rate and time are controlled by the PLC program to ensure the representativeness of the sample. Subsequently, the water sample is obtained by opening the discharge ball valve 13 and allowing the water sample to flow out of the discharge tube 12.

[0021] Throughout the entire device, water tank 2, sample tank 11, and various pipes are all made of stainless steel to prevent rust from contaminating the water. Both water tank 2 and sample tank 11 are equipped with covers, which are fixed by hinges to prevent contamination and facilitate opening and closing for inspection and maintenance.

Claims

1. A water quality monitoring and automatic sampling device, comprising a water tank (2), characterized in that, The water tank (2) has an inlet pipe (1) fixed obliquely near the bottom side wall, and an outlet pipe (3) fixed near the top side wall. The inlet pipe (1) and the outlet pipe (3) are arranged diagonally opposite to the water tank (2). The bottom of the water tank (2) is provided with a sloping bottom plate (4). The lowest point of the side wall of the water tank (2) is provided with a sewage discharge structure. The water tank (2) is also connected to a sampling structure.

2. The water quality monitoring and automatic sampling device according to claim 1, characterized in that, The sampling structure includes a sampling tube (9) set on the side wall of the water tank (2) at the lower end on the same side as the outlet pipe (3), a sampling solenoid valve (10) is provided on the sampling tube (9), a sample trough (11) is connected to the sampling tube (9), a discharge pipe (12) is provided at the lowest point of the side wall of the sample trough (11), and a discharge ball valve (13) is provided on the discharge pipe (12).

3. A water quality monitoring and automatic sampling device according to claim 1 or 2, characterized in that, The sewage discharge structure includes a sewage discharge pipe (5) located at the lowest point of the side wall of the water tank (2) on the same side as the inlet pipe (1), and a sewage discharge solenoid valve (6) is provided on the sewage discharge pipe (5).

4. The water quality monitoring and automatic sampling device according to claim 3, characterized in that, The top cover of the water tank (2) has two holes, through which a pH sensor (7) and a conductivity sensor (8) are respectively inserted.

5. The water quality monitoring and automatic sampling device according to claim 2, characterized in that, The water tank (2) and sample tank (11) are provided with a base (14) at their lower ends.

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