Multi-parameter water quality monitoring equipment

Abstract

Multi-parameter water quality monitoring equipment comprises a wall plate and a monitoring assembly. The wall plate is mounted in the shell; the monitoring assembly comprises a plurality of sample pools which are sequentially arranged on the wall plate, overflow pipes are arranged at the upper ends of the sample pools, liquid discharge pipes are arranged at the lower ends of the sample pools, liquid inlet pipes and sampling pipes are sequentially arranged on the side walls of the sample pools from top to bottom, the overflow pipes are connected to a five-way concentrator, the liquid discharge pipes are all connected to a five-way valve, the five-way valve is connected to a six-joint valve, the liquid inlet pipes are connected to a micro pump, and the sampling pipes are connected to a water pump. The sampling pipe is connected to the sampling valve; two photoelectric liquid level sensors are arranged on the two parallel side walls of the sample pool in the vertical direction, a peristaltic pump is further arranged on the liquid discharging pipe, the lower end of the six-joint valve is sequentially connected with an air pipe, a water sample pipe, a pure water pipe, a waste water pipe, a waste liquid pipe and a standby pipe, a pipeline is arranged at the lower end of the micro pump, and one end of the pipeline is located in the standard liquid bottle. Different parameters can be flexibly selected, standard monitoring operation can be carried out on multiple or single parameters at the same time, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality monitoring, and in particular relates to a multi-parameter water quality monitoring device. Background Art

[0002] In recent years, the technology of automatic water quality monitoring has developed rapidly. In practical applications, it is usually necessary to monitor the water sample data of multiple parameter indicators. In order to ensure the long-term accuracy, stability, and qualified curves of on-line monitoring data, it is necessary to conduct quality control on the equipment to ensure that each parameter data is within the allowable error range. Currently, it is usually through the spike recovery test of water samples for assessment.

[0003] Currently, in the field of on-line water quality monitoring, quality control instruments or quality control systems with spike recovery have been widely used. However, the existing spike addition devices have the following problems: First, most devices on the market can only perform spike addition work for one parameter without changing the standard solution. However, in actual applications, the indicators to be monitored and quality controlled are often multiple. To meet the requirements, multiple quality control devices can only be used, which undoubtedly increases the costs of equipment, structure, operation and maintenance, etc. Second, a few devices on the market that support multiple parameter spike addition generally can only select multiple parameters for simultaneous spike addition, cannot operate on individual parameters, or the steps are cumbersome. Summary of the Utility Model

[0004] In view of the deficiencies of the above-mentioned related prior art, the present application provides a multi-parameter water quality monitoring device, which can flexibly select different parameters and perform spike addition monitoring operations on multiple or single parameters simultaneously, and has strong practicability.

[0005] To achieve the above object, the present utility model adopts the following technologies:

[0006] A multi-parameter water quality monitoring device includes: a wall plate and a monitoring component.

[0007] The wall plate is installed in the housing; the monitoring component includes a plurality of sample cells arranged in sequence on the wall plate. An overflow pipe is provided at the upper end of the sample cell, a drain pipe is provided at the lower end, an inlet pipe and a sampling pipe are sequentially provided on the side wall from top to bottom. The overflow pipe is connected to a five-way hub, the drain pipes are all connected to a five-way valve, the five-way valve is connected to a six-way valve, the inlet pipe is connected to a micro pump, and the sampling pipe is connected to a sampling valve; two photoelectric liquid level sensors are provided on two mutually parallel side walls of the sample cell along the vertical direction.

[0008] Further, the sample cell is square, the bottom is arc-shaped, and it is made of transparent glass material.

[0009] Further, a peristaltic pump is also provided on the drain pipe.

[0010] Further, a pipeline is provided at the lower end of the micro pump, and one end of the pipeline is located in the standard solution bottle.

[0011] Further, an air pipe, a water sample pipe, a pure water pipe, a waste water pipe, a waste liquid pipe and a spare pipe are successively connected to the lower end of the six-way valve.

[0012] Further, the photoelectric liquid level sensor located above is at the 100 mL scale line of the sample cell, and the photoelectric liquid level sensor located below is at the 50 mL scale line of the sample cell.

[0013] The beneficial effects of the present utility model are as follows: The structure is compact, greatly saving space and hardware costs. Each channel can work independently, and the liquid paths do not affect each other; Different parameters can be flexibly selected according to different application scenarios, and multiple or single parameters can be monitored by spiking at the same time; For each sample cell, precise constant volume liquid inlet and drainage can be realized through the cooperation of a peristaltic pump, a photoelectric sensor and a six-way valve; Through the control of the six-way valve, liquid path separation is achieved, and pure water can be injected through cooperation with the peristaltic pump for standard solution dilution, or water samples can be injected for spiking recovery operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are only for illustrating the selected embodiments, not all possible implementation schemes, and are not intended to limit the scope of the present utility model.

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an embodiment of the present application.

[0016] Figure 2 It is a three-dimensional schematic diagram of the overall structure of another angle of an embodiment of the present application.

[0017] Figure 3 It is a schematic diagram of the overall structure route distribution of an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the embodiments of the present utility model will be described in detail below with reference to the drawings. However, the embodiments described herein are only a part of the embodiments of the present utility model, not all of the embodiments.

[0019] As Figures 1-3 shown, this embodiment provides a multi-parameter water quality monitoring device, including: a wall plate 100 and a monitoring component 200.

[0020] The wall panel 100 is installed in the shell; the monitoring component 200 includes a plurality of sample pools 201 arranged in sequence on the wall panel 100, an overflow pipe 202 is provided at the upper end of the sample pool 201, a discharge pipe 203 is provided at the lower end, and a liquid inlet pipe 204 and a sampling pipe 205 are provided on the side wall from top to bottom, the overflow pipe 202 is connected to a five-way hub 206, the discharge pipes 203 are connected to a five-way valve 207, the five-way valve 207 is connected to a six-way valve 208, the liquid inlet pipe 204 is connected to a micro pump 209, and the sampling pipe 205 is connected to a sampling valve 210; two mutually parallel side walls of the sample pool 201 are provided with two photoelectric liquid level sensors 211 in the vertical direction, which can accurately detect the water level conditions at two points through the photoelectric principle.

[0021] Specifically, the sample pool 201 is square with an arc-shaped bottom, so that impurities can be easily discharged along with the water sample through the inlet and outlet pipes 203, further reducing residues, and is made of transparent glass, such as organic glass, plastic, etc.

[0022] Specifically, the lower end of the six-valve 208 is connected in sequence with an air pipe, a water sample pipe, a pure water pipe, a waste water pipe, a waste liquid pipe and a spare pipe.

[0023] Specifically, a peristaltic pump 212 is also provided on the discharge pipe 203. When the peristaltic pump 212 rotates forward, the different liquid inlet channels of the sextuple valve 208 can be switched to control the inlet of water samples and pure water. When the waste water pipe of the sextuple valve 208 is opened, the peristaltic pump 212 reverses, and the waste water in the sample pool 201 is finally discharged from the waste water pipe via the peristaltic pump 212, the five-way valve 207 and the sextuple valve 208. Similarly, the waste liquid is discharged from the waste liquid pipe to achieve wastewater and waste liquid separation.

[0024] Specifically, a pipe 213 is provided at the lower end of the micro pump 209 , and one end of the pipe 213 is located in the standard solution bottle 214 .

[0025] Specifically, the photoelectric liquid level sensor 211 located at the top is located at the 100mL scale line of the sample pool 201, and the photoelectric liquid level sensor 211 located at the bottom is located at the 50mL scale line of the sample pool 201, thereby achieving precise volume determination of 50mL or 100mL of the sample pool 201.

[0026] When using the device to monitor water quality, it can be divided into seven steps. The first step is to pre-pump and empty the standard liquid: according to the set standard liquid pre-pump value, the micro pump 209 pumps the pre-pumped volume of standard liquid through the liquid inlet pipe 204, then the six-way valve 208 switches to the waste liquid channel, and the peristaltic pump 212 reverses to discharge the waste liquid in the sample pool 201 from the waste liquid pipe;

[0027] Second step: rinsing with pure water: The six-way valve 208 switches the channel to pure water, the peristaltic pump 212 rotates forward, and the pure water enters the sample cell 201 through the pure water pipe. When the liquid level reaches the photoelectric sensor 211 at the 100 ml mark of the sample cell, the peristaltic pump 212 stops rotating. The six-way valve 208 switches to the waste water channel, and the peristaltic pump 212 rotates in reverse to discharge the waste water in the sample cell 201 through the waste water pipe;

[0028] Third step: volume fixing with pure water: The six-way valve 208 switches the channel to pure water, the peristaltic pump 212 rotates forward, and the pure water enters the sample cell 201 through the pure water pipe. When the liquid level reaches the required level, the peristaltic pump 212 continues to rotate for 5 seconds and then stops, so that the liquid level slightly exceeds the required level. The six-way valve 208 switches to the waste water channel, and then the peristaltic pump 212 rotates in reverse until the liquid level reaches the required level again, and the peristaltic pump 212 stops;

[0029] Fourth step: injecting standard solution: According to the added standard volume set by the channel, the micro pump 209 injects the standard solution into the sample cell 201 through the inlet pipe 204;

[0030] Fifth step: air stirring: The six-way valve 208 switches to the air channel, and the peristaltic pump 212 rotates forward to draw air into the sample cell 201 through the air pipe to bubble and stir the dilution;

[0031] Sixth step: instrument sampling: Open the sampling valve 210, and the dilution is collected into the on-line monitoring equipment through the sampling pipe 205;

[0032] Seventh step: cleaning: After the instrument takes the diluted standard solution, close the sampling valve 210. The six-way valve 208 switches to the waste liquid pipe, turn on the peristaltic pump 212 to rotate in reverse to discharge the remaining standard solution from the waste liquid pipe, close the peristaltic pump 212, then the six-way valve 208 switches to the pure water pipe, turn on the peristaltic pump 212 to rotate forward to pump pure water into the sample cell 201 to clean the sample cell 201. After cleaning for a period of time, the six-way valve 208 switches to the waste water pipe, turn on the peristaltic pump 212 to rotate in reverse to discharge the cleaning water, close the six-way valve 208, close the peristaltic pump 212, and end the entire process.

[0033] Since the above is only the preferred embodiment of the present invention and is not used to limit the present invention, obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A multi-parameter water quality monitoring device, characterized in that, Comprising: A wall panel (100), installed inside the housing; A monitoring component (200), including a plurality of sample cells (201) arranged in sequence on the wall panel (100). An overflow pipe (202) is provided at the upper end of the sample cell (201), a drain pipe (203) is provided at the lower end, a liquid inlet pipe (204) and a sampling pipe (205) are provided on the side wall in sequence from top to bottom. The overflow pipe (202) is connected to a five-way hub (206), the drain pipes (203) are all connected to a five-way valve (207), the five-way valve (207) is connected to a six-way valve (208), the liquid inlet pipe (204) is connected to a micro pump (209), and the sampling pipe (205) is connected to a sampling valve (210); Two photoelectric liquid level sensors (211) are provided on two mutually parallel side walls of the sample cell (201) along the vertical direction.

2. The multi-parameter water quality monitoring device according to claim 1, wherein, The sample cell (201) is square, with a circular arc bottom and is made of transparent glass.

3. The multi-parameter water quality monitoring device according to claim 1, wherein A peristaltic pump (212) is further provided on the drain pipe (203).

4. The multi-parameter water quality monitoring device according to claim 1, characterized in that, A pipe (213) is provided at the lower end of the micro pump (209), and one end of the pipe (213) is located in a standard liquid bottle (214).

5. The multi-parameter water quality monitoring device according to claim 1, characterized in that, An air pipe, a water sample pipe, a pure water pipe, a waste water pipe, a waste liquid pipe and a spare pipe are sequentially connected to the lower end of the six-way valve (208).

6. The multi-parameter water quality monitoring device according to claim 1, characterized in that, The upper photoelectric liquid level sensor (211) is located at the 100 mL scale line of the sample cell (201), and the lower photoelectric liquid level sensor (211) is located at the 50 mL scale line of the sample cell (201).

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