A multi-point simultaneous sampling device for surface water bodies

Abstract

The utility model belongs to environmental monitoring device technical field discloses a kind of surface water body multipoint simultaneous sampling device, including base and the liquid inlet being opened in the base, the base is fixedly connected with multiple mounting plates at equal angle circumferentially, the base is fixedly connected with negative pressure assembly, multiple the mounting plate is fixedly connected with water suction assembly and cleaning assembly on, the utility model is configured by each sampling point, and the cleaning assembly of backflushing can be reversed to water suction unit Reverse flushing, effectively remove the suspended particulate matter, algae, biological membrane and other impurities, such as jam, improve the water absorption efficiency of each point, ensure that sufficient water sample is smoothly extracted in each water suction interval, can also maintain the purity of subsequent sampling water sample, avoid the continuous pollution of subsequent sample due to dirt residual accumulation, ensure the accuracy of single point water sample detection data.

Claims

1. A multi-point simultaneous sampling device for surface water, characterized in that: Includes a base (1) and a liquid inlet (11) opened on the base (1). Multiple mounting plates (12) are fixedly connected to the base (1) at equal angles in the circumferential direction. A negative pressure component (2) is fixedly connected to the base (1). A water absorption component (3) and a cleaning component (4) are fixedly connected to each of the multiple mounting plates (12). Negative pressure component (2), which is used to continuously generate negative pressure to drive multiple water absorption components (3) to work simultaneously; Water-absorbing component (3), which is used for water sampling; The cleaning component (4) is used to backwash multiple water-absorbing components (3) to ensure the water absorption efficiency and sampling accuracy of the water-absorbing components (3).

2. The apparatus of claim 1, wherein: The negative pressure assembly (2) includes a mounting cylinder (21) fixedly connected to the top of the base (1). A mounting bracket (23) is fixedly connected to the top of the mounting cylinder (21). An electric push rod (24) is fixedly connected to the mounting bracket (23). A piston (22) is fixedly connected to the extended end of the electric push rod (24). The piston (22) is slidably disposed in the mounting cylinder (21). An exhaust hole (25) is provided on the piston (22). A first solenoid valve (26) is connected to the exhaust hole (25). The first solenoid valve (26) closes when the piston (22) is pulled out to continuously generate negative pressure to drive the water absorption assembly (3) to absorb water. The first solenoid valve (26) opens when the piston (22) is squeezed to discharge gas.

3. The apparatus of claim 2, wherein: The water absorption assembly (3) includes a water collection tank (31) fixedly connected to the mounting plate (12), a water suction pipe (32) fixedly connected to the water collection tank (31), and a water suction head (33) fixedly connected to the end of the water suction pipe (32). The bottom of the water collection tank (31) is provided with a drain outlet (37). An air suction pipe (35) is fixedly connected to one end of the water collection tank (31) away from the water suction pipe (32). The air suction pipe (35) is used to connect the water collection tank (31) and the mounting cylinder (21) so that the water absorption assembly (3) can cooperate with the negative pressure assembly (2) to absorb water.

4. The apparatus of claim 3, wherein: A second solenoid valve (36) is fixedly connected to the water suction pipe (32), and a liquid level sensor (13) is fixedly connected inside the water collection tank (31). The second solenoid valve (36) is connected to the liquid level sensor (13), so that when the liquid level sensor (13) detects that the water in the water collection tank (31) has been collected to the required liquid level, the second solenoid valve (36) is closed to prevent the liquid from flowing back into the mounting cylinder (21).

5. The apparatus of claim 3, wherein: A filter screen (34) is fixedly connected to the water suction head (33).

6. The apparatus of claim 3, wherein: A third solenoid valve (41) is fixedly connected to the drain outlet (37). The third solenoid valve (41) is used to discharge the sample collected in the water collection tank (31) for testing.

7. The apparatus of claim 6, wherein: The cleaning component (4) includes a cleaning pipe (42) and a fourth solenoid valve (43) fixedly connected to the cleaning pipe (42). One end of the cleaning pipe (42) is connected to the base (1), and the other end is connected to the water collection tank (31). The connection between the cleaning pipe (42) and the water collection tank (31) is located at the top of the water collection tank (31).

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