Heavy metal filtering device for water quality monitoring

Abstract

The utility model relates to the technical field of water quality monitoring, in particular to a heavy metal filtering device for water quality monitoring, which comprises a sedimentation tank, an output end of the sedimentation tank is communicated with three identical first guide pipes, outer ends of the first guide pipes are fixedly communicated with a first filter, and outer ends of the first filter are fixedly communicated with a second filter. The outer end of the second filter communicates with first electromagnetic valves through second guide pipes, and the output ends of the three first electromagnetic valves communicate with pressure gauges through third guide pipes. The device is simple in structure and convenient to use, through the cooperation of the vacuum liquid pump and the electromagnetic valve, a water sample is extracted from the settling pond through the combined filter, the filtered water sample is pumped into the sample pond to be sampled by a heavy metal monitoring instrument, cleaning water can be pumped into the sample pond through the liquid pump to clean the sample pond, and the system pressure can be detected through the pressure gauge; if the pressure is too high, the filtering channels can be switched in time, and the functions of online filtering, switching, cleaning and the like of various heavy metal water samples can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality monitoring, in particular to a heavy metal filtering device for water quality monitoring. Background Technique

[0002] At present, on-line automatic water quality measuring instruments have been widely used. However, in the field of heavy metal monitoring, there is a lack of effective pretreatment equipment, resulting in the fact that on-line automatic water quality monitoring data often cannot be consistent with laboratory analysis data. Especially in surface water quality monitoring, according to the relevant national standards, copper, lead, zinc, cadmium, iron and manganese refer to the dissolved state content, that is, after sampling, it is immediately filtered with a 0.45μm microporous filter membrane on site and then the measured content. However, the relevant on-line automatic water quality measuring instruments do not have a 0.45μm microporous filter membrane for filtration, resulting in the measurement of total heavy metal data, which is quite different from the national standard requirements. Even if some manufacturers use a 0.45μm microporous filter membrane, the filter membrane is easily blocked, resulting in very difficult maintenance of related equipment and inconvenient application.

[0003] Therefore, we propose a heavy metal filtering device for water quality monitoring. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heavy metal filtering device for water quality monitoring, which solves the problems put forward in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A heavy metal filtering device for water quality monitoring, including a sedimentation tank, the output end of the sedimentation tank is connected to three identical first conduits, the outer end of the first conduit is fixedly connected to a first filter, the outer end of the first filter is fixedly connected to a second filter, the outer end of the second filter is connected to a first electromagnetic valve through a second conduit, the output ends of the three first electromagnetic valves are connected to a pressure gauge through a third conduit, the outer end of the pressure gauge is connected to one end of a vacuum liquid pump, and the other end of the vacuum liquid pump is connected to a sample cell.

[0006] By adopting the above technical scheme, first, the vacuum liquid pump is used to extract the water in the sedimentation tank. When extracting, one of the first electromagnetic valves is opened first, so as to filter heavy metals by using the first filter and the second filter in this channel. During the filtering process, the pressure gauge monitors the pressure. When the pressure in this channel is too high, at this time, the industrial control computer outside will close the first electromagnetic valve in this channel and start the first electromagnetic valve in another channel, so as to realize the rapid switching of the filtering channel and avoid affecting the filtering effect due to blockage.

[0007] As a preferred implementation mode of the utility model, the outer wall of the third conduit is fixedly connected to a second electromagnetic valve, and the outer end of the second electromagnetic valve is connected to a clear water pipe.

[0008] By adopting the above technical solution, when the sample cell needs to be cleaned, the industrial control computer opens the second solenoid valve, so that the vacuum liquid pump can be used to draw clear water into the sample cell, thereby flushing the sample cell, and then opening the drain valve can discharge the residual liquid.

[0009] As a preferred embodiment of the present utility model, one end of the sample cell is connected to the heavy metal instrument through a connecting pipe.

[0010] By adopting the above technical solution, the water in the sample cell can be introduced into the heavy metal instrument to detect the heavy metals in the water sample.

[0011] As a preferred embodiment of the present utility model, the tail end of the sample cell is fixedly communicated with a drain valve.

[0012] By adopting the above technical solution, the setting of the drain valve enables the residual liquid in the sample cell to be discharged.

[0013] As a preferred embodiment of the present utility model, a liquid level gauge is fixed on the upper side of one side wall of the sample cell.

[0014] By adopting the above technical solution, the liquid level gauge can monitor the liquid level in the sample cell, and the signal output end of the liquid level gauge is connected to the signal input end of the industrial control computer, and the signal output end of the industrial control computer is connected to the signal output end of the vacuum liquid pump. Thus, when the liquid level reaches the threshold value, the industrial control computer will stop the vacuum liquid pump from working to prevent water from overflowing in the sample cell.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The structure of the present utility model is simple and easy to use. Through the cooperation of the vacuum liquid pump and the solenoid valve, water samples are drawn from the sedimentation tank through the combined filter, and the filtered water samples are pumped into the sample cell for the heavy metal monitoring instrument to sample. The sample cell can be cleaned by pumping cleaning water through the liquid pump, and the system pressure can be detected by the pressure gauge. If the pressure is too high, the filtration channel can be switched in time, and functions such as online filtration, switching, and cleaning of water samples of various heavy metals (such as copper, lead, zinc, cadmium, iron, and manganese) can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects, and advantages of the present utility model will become more apparent:

[0018] Figure 1 It is the overall structural schematic diagram of the heavy metal filtration device for water quality monitoring of the present utility model.

[0019] In the figure:

[0020] 1. Sedimentation tank; 11. First filter; 12. Second filter; 13. First solenoid valve; 14. Second solenoid valve; 15. Clear water pipe; 16. Pressure gauge; 17. Vacuum liquid pump;

[0021] 2. Sample cell; 21. Liquid level gauge; 22. Drain valve;

[0022] 3. Heavy metal instrument. Specific implementation manner

[0023] Please refer to Figure 1 , the present utility model provides a technical solution: a heavy metal filtration device for water quality monitoring, including a sedimentation tank 1, the output end of the sedimentation tank 1 is communicated with three identical first conduits, the outer ends of the first conduits are fixedly communicated with a first filter 11, the outer end of the first filter 11 is fixedly communicated with a second filter 12, the outer end of the second filter 12 is communicated with a first solenoid valve 13 through a second conduit, the output ends of the three first solenoid valves 13 are communicated with a pressure gauge 16 through a third conduit, the outer end of the pressure gauge 16 is communicated with one end of a vacuum liquid pump 17, and the other end of the vacuum liquid pump 17 is communicated with a sample cell 2;

[0024] Among them, it also includes an industrial control computer installed outside the device, the signal output end of the pressure gauge 16 is connected to the signal input end of the industrial control computer, and the signal output end of the industrial control computer is connected to the signal input end of the first solenoid valve 13;

[0025] And, the accuracy of the first filter 11 is 10 μm, and the accuracy of the second filter 12 is 0.45 μm;

[0026] During actual use, first use the vacuum liquid pump 17 to extract the water in the sedimentation tank 1. When extracting, one of the first solenoid valves 13 will be opened first, so as to filter heavy metals by using the first filter 11 and the second filter 12 in this channel. During the filtering process, the pressure gauge 16 will monitor the pressure. When the pressure in this channel is too high, at this time, the external industrial control computer will close the first solenoid valve 13 in this channel and start the first solenoid valve 13 in another channel, so as to achieve rapid switching of the filtering channel and avoid affecting the filtering effect due to blockage.

[0027] Furthermore, a liquid level gauge 21 is fixed on the upper side of one side wall of the sample cell 2. The liquid level gauge 21 can monitor the liquid level in the sample cell 2, and the signal output end of the liquid level gauge 21 is connected to the signal input end of the industrial control computer, and the signal output end of the industrial control computer is connected to the signal output end of the vacuum liquid pump 17. Thus, when the liquid level reaches the threshold, the industrial control computer will stop the vacuum liquid pump 17 from working to avoid water overflowing in the sample cell 2.

[0028] Further, one end of the sample cell 2 is connected to the heavy metal instrument 3 through a connecting pipe, and the water in the sample cell 2 can be introduced into the heavy metal instrument 3 to detect heavy metals in the water sample.

[0029] It is worth introducing that a drain valve 22 is fixedly communicated with the tail end of the sample cell 2. The setting of the drain valve 22 enables the residual liquid in the sample cell 2 to be discharged.

[0030] As Figure 1 shown; a second solenoid valve 14 is fixedly communicated with the outer wall of the third conduit. The outer end of the second solenoid valve 14 is communicated with the clear water pipe 15. Thus, when the sample cell 2 needs to be cleaned, the industrial control computer opens the second solenoid valve 14, and then the vacuum liquid pump 17 can be used to extract clear water and introduce it into the sample cell 2 to wash the sample cell 2, and then the drain valve 22 can be opened to discharge the residual liquid.

[0031] The implementation principle of a heavy metal filtering device for water quality monitoring in this application is as follows: in actual use, first, the vacuum liquid pump 17 is used to extract the water in the sedimentation tank 1. When extracting, one of the first solenoid valves 13 is first opened, and then the first filter 11 and the second filter 12 in this channel are used to filter heavy metals. During the filtering process, the pressure gauge 16 monitors the pressure. When the pressure in this channel is too high, at this time, the industrial control computer outside will close the first solenoid valve 13 in this channel and start the first solenoid valve 13 in another channel, so as to realize the rapid switching of the filtering channel and avoid affecting the filtering effect due to blockage. At the same time, the liquid level gauge 21 can monitor the liquid level in the sample cell 2 to avoid water overflowing in the sample cell 2. When the sample cell 2 needs to be cleaned, the industrial control computer opens the second solenoid valve 14, and then the vacuum liquid pump 17 can be used to extract clear water and introduce it into the sample cell 2 to wash the sample cell 2, and then the drain valve 22 can be opened to discharge the residual liquid.

[0032] In addition, all the components included in a heavy metal filtering device for water quality monitoring in this utility model are common standard parts or parts known to those skilled in the art. Its structure and principle can be known by those skilled in the art through technical manuals or through conventional experimental methods. At the idle place of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the adapted monitoring computer and power supply, are connected through wires. For the specific connection means, the sequence of work among the electrical components in the following working principle should be referred to for electrical connection. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be made.

Claims

1. A heavy metal filtering device for water quality monitoring, comprising a sedimentation tank (1), characterized in that: The output end of the sedimentation tank (1) is connected to three identical first conduits, the outer end of the first conduit is fixedly connected to a first filter (11), the outer end of the first filter (11) is fixedly connected to a second filter (12), the outer end of the second filter (12) is connected to a first solenoid valve (13) via a second conduit, the output ends of the three first solenoid valves (13) are connected to a pressure gauge (16) via a third conduit, the outer end of the pressure gauge (16) is connected to one end of a vacuum liquid pump (17), and the other end of the vacuum liquid pump (17) is connected to a sample pool (2).

2. A heavy metal filtering device for water quality monitoring according to claim 1, characterized in that: The outer wall of the third conduit is fixedly connected to a second solenoid valve (14), and the outer end of the second solenoid valve (14) is connected to a clean water pipe (15).

3. A heavy metal filtering device for water quality monitoring according to claim 1, characterized in that: One end of the sample pool (2) is connected to a heavy metal instrument (3) via a connecting tube.

4. A heavy metal filtering device for water quality monitoring according to claim 1, characterized in that: The tail end of the sample pool (2) is fixedly connected to a liquid discharge valve (22).

5. A heavy metal filtering device for water quality monitoring according to claim 1, characterized in that: A liquid level meter (21) is fixed on the upper side of one side wall of the sample pool (2).

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