Multi-parameter water quality monitor

Abstract

The utility model discloses a multi-parameter water quality monitor which comprises a water inlet pipeline, the water inlet pipeline is communicated with at least two of a turbidity detection assembly, a residual chlorine detection assembly and a pH value detection assembly, each of the turbidity detection assembly, the residual chlorine detection assembly and the pH value detection assembly comprises a flow cell, and each flow cell is provided with a liquid inlet pipe and a liquid outlet pipe. At least one flow cell is provided with a flow control assembly; the flow control assembly comprises an adjusting valve and a three-way pipe, the adjusting valve is arranged on the liquid inlet pipe and used for adjusting the flow of the liquid inlet pipe, and the first end of the three-way pipe communicates with the liquid outlet pipe; the three-way pipe is provided with a switch valve so that the first end of the three-way pipe can be communicated with the second end of the three-way pipe or the first end of the three-way pipe can be communicated with the third end of the three-way pipe. According to the application, the flow regulation mode of the flow cells is changed, single regulation of the flow of each flow cell can be realized by using the flow control assembly, and the mode can avoid the problems of inconvenient installation and poor regulation precision caused by arrangement of a flow meter.

Description

TECHNICAL FIELD

[0001] The utility model relates to water quality monitoring technical field especially relates to a multi -parameter water quality monitor. BACKGROUND

[0002] Multi -parameter water quality monitor is a kind of professional equipment for analyzing and evaluating water quality condition, can carry out fast, accurate measurement to multiple water quality parameters, is widely used in surface water monitoring, ocean monitoring, industrial water detection, tap water plant monitoring, sewage treatment plant monitoring, irrigation water monitoring and so on multiple fields.

[0003] At present, the monitoring data of multi -parameter water quality monitor to water quality include pH value, turbidity, residual chlorine, COD, BOD, temperature etc., and different application fields can adopt different detection range's multi -parameter water quality monitor.Common multi -parameter water quality monitor such as patent application number CN202122380108.6, the water quality online monitoring sampling system patent shown, mainly includes turbidity detection component, residual chlorine detection component, pH value detection component and temperature detection component.Each detection component's structure is similar, and it includes flow cell and the detection probe arranged in flow cell, and the signal detected by detection probe can be monitored online and be shown on display screen, to achieve the purpose of online monitoring.

[0004] In the above patent, when the water to be monitored enters each flow cell, the flow into the flow cell will be limited according to the different types and detection ranges of the detection probe. At present, in order to monitor the flow into the flow cell, a flow meter is arranged on the feed pipe for detection. However, the flow meter occupies a large area and is not convenient to install, resulting in high production cost of the existing multi -parameter water quality monitor. At the same time, the flow meter also has the problem that the water flow is not easy to control. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides a multi -parameter water quality monitor, which solves the problem of water flow not easy to control and high production cost of water quality monitor caused by using flow meter to detect the water flow into the flow cell in the prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a multi -parameter water quality monitor, including water inlet pipeline, at least two detection components in turbidity detection component, residual chlorine detection component, pH value detection component are communicated on water inlet pipeline, and the turbidity detection component, residual chlorine detection component and pH value detection component all include flow cell, each flow cell is equipped with liquid inlet pipe and liquid outlet pipe, and at least one flow cell is equipped with flow control component;

[0007] The flow control assembly comprises an adjusting valve and a tee pipe, the adjusting valve is arranged on the liquid inlet pipe and used for adjusting the flow of the liquid inlet pipe, and the first end of the tee pipe is communicated with the liquid outlet pipe;

[0008] The tee pipe is provided with a switch valve, so that the first end of the tee pipe is communicated with the second end of the tee pipe, or

[0009] So that the first end of the tee pipe is communicated with the third end of the tee pipe.

[0010] The principle of the utility model:

[0011] The water quality monitor can monitor multiple parameters of water quality, therefore, the water quality monitor needs to detect at least two parameters of water quality, and common water quality detection parameters are turbidity, pH value and residual chlorine, therefore, the multi-parameter water quality monitor of the application can detect at least two of turbidity, pH value and residual chlorine of water quality.

[0012] Since the turbidity detection assembly, the residual chlorine detection assembly and the pH value detection assembly have similar structures and all comprise a flow cell, the flow adjustment mode of the flow cell is designed in the application, and changing the adjustment mode of any flow cell can avoid the problems caused by adjusting the flow of the flow cell by using a flow meter, therefore, at least one flow cell is provided with a flow control assembly.

[0013] Based on the structure of the flow control assembly, it is assumed that the second end of the tee pipe is a conventional drainage end, and the third end of the tee pipe is a sampling end; in normal use, the development valve of the tee pipe controls the first end and the second end of the tee pipe to communicate, and the water body passes through each flow cell and cooperates with the corresponding detection probe (detector) in each flow cell to achieve the purpose of detecting water quality parameters.

[0014] When it is necessary to adjust the flow in the flow cell, the development valve of the tee pipe is rotated to control the first end and the third end of the tee pipe to communicate, a beaker or other container capable of measuring the volume of liquid is arranged below the third end of the tee pipe, the adjusting valve on the liquid inlet pipe of the flow cell is adjusted to control the amount of water entering the flow cell, and the water discharged from the flow cell is measured by the beaker, so that whether the amount of water in the flow cell meets the requirements within a preset time can be judged, thereby achieving the purpose of adjusting the flow in the flow cell.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The flow adjustment mode of the flow cell is changed in the application, and the flow control assembly can realize single adjustment of the flow of each flow cell, and under normal conditions, the flow in each flow cell does not need to be adjusted unless there is an extreme accident, so that the problem of poor installation and adjustment precision caused by setting a flow meter can be avoided.

[0017] Further, the water inlet pipeline is communicated with a turbidity detection assembly, a residual chlorine detection assembly and a pH value detection assembly,

[0018] The liquid inlet end of the turbidity detection assembly is communicated with the water inlet pipeline, the liquid outlet end of the turbidity detection assembly is communicated with the liquid inlet end of the pH value detection assembly, and the liquid inlet end of the residual chlorine detection assembly is communicated with the water inlet pipeline;

[0019] The liquid outlet end of the residual chlorine detection assembly and the liquid outlet end of the pH value detection assembly are respectively connected with a residual chlorine liquid discharge pipe and a pH liquid discharge pipe.

[0020] Further, the flow cell of the turbidity detection assembly is a turbidity flow cell, the flow cell of the pH value detection assembly is a pH flow cell,

[0021] The liquid inlet pipe of the turbidity flow cell is connected with the water inlet pipeline, the liquid outlet pipe of the turbidity flow cell is connected with the liquid inlet pipe of the pH flow cell, and the liquid outlet pipe of the pH flow cell is communicated with the pH liquid discharge pipe.

[0022] Further, the pH flow cell is provided with a flow control assembly, wherein the second end of the three-way pipe connected to the pH flow cell is connected with the pH liquid discharge pipe.

[0023] Further, the flow cell of the residual chlorine detection assembly is a residual chlorine flow cell, the liquid inlet pipe of the residual chlorine flow cell is connected with the water inlet pipeline, and the liquid outlet pipe of the residual chlorine flow cell is communicated with the residual chlorine liquid discharge pipe.

[0024] Further, the residual chlorine flow cell is provided with a flow control assembly, wherein the second end of the three-way pipe connected to the residual chlorine flow cell is connected with the residual chlorine liquid discharge pipe.

[0025] Further, a drain main pipe is further included, and the residual chlorine liquid discharge pipe and the pH liquid discharge pipe are both communicated with the drain main pipe.

[0026] Further, connecting pieces are respectively arranged between the residual chlorine liquid discharge pipe, the pH liquid discharge pipe and the drain main pipe, and the connecting pieces include water receiving funnels communicated with the drain main pipe, and the residual chlorine liquid discharge pipe and the pH liquid discharge pipe respectively extend into the corresponding water receiving funnels and are arranged in gaps with the corresponding water receiving funnels.

[0027] Further, a mounting cabinet is further included, a mounting cavity is arranged in the mounting cabinet, and a display screen is arranged on the upper surface of the mounting cabinet.

[0028] Further, two moving recesses are arranged on the opposite side walls of the mounting cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic view of the multi-parameter water quality monitor.

[0030] Figure 2 It is a connection schematic view of the detection assemblies, the water inlet pipeline and the drain main pipe.

[0031] Figure 3 For Figure 2 Another perspective of the structural diagram.

[0032] In the figure: installation shell 100, display screen 110, moving groove 120, installation cavity 130, drainage main pipe 140, water collecting funnel 141, water inlet pipe 150, turbidity flow tank 200, turbidity instrument 210, turbidity inlet pipe 220, turbidity outlet pipe 230, pH flow tank 300, pH detector 310, pH inlet pipe 320, pH regulating valve 330, pH outlet pipe 340, pH tee pipe 350, pH on-off valve 351, pH drainage pipe 352, residual chlorine flow tank 400, residual chlorine detector 410, residual chlorine inlet pipe 420, residual chlorine regulating valve 430, residual chlorine outlet pipe 440, residual chlorine tee pipe 450, residual chlorine on-off valve 451, residual chlorine drainage pipe 452. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0034] As Figure 1 shown, a multi-parameter water quality monitor includes an installation shell 100. The installation shell 100 can adopt a rectangular shell structure, a cylindrical shell structure, or other special-shaped shell structures. In this application, the installation shell 100 adopts a rectangular shell structure. An installation cavity 130 is arranged on the inner wall of the installation shell 100. The installation cavity 130 facilitates the installation of various components. The side wall of the shell can be connected with a detachable maintenance plate to facilitate the maintenance of the components in the installation cavity 130. To facilitate the installation and movement of the water quality monitor as a whole, two relatively recessed moving grooves 120 are arranged on the outer side wall of the installation shell 100. The moving grooves 120 facilitate the application of the action point by the hands of the operator, and are used to move or install the water quality monitor of the present application. To facilitate the reading of the detected water quality parameters by the operator, a display screen 110 is arranged on the upper surface of the installation shell 100, which is used to display the running conditions of the water quality monitor, etc.

[0035] To realize the online monitoring of the water quality, the water quality monitor of the present application needs to detect at least two parameters of the water quality. Common water quality detection parameters include turbidity, pH value, and residual chlorine. Therefore, the multi-parameter water quality monitor of the present application can detect at least two of the turbidity, pH value, and residual chlorine of the water quality. Since water needs to be introduced for water quality monitoring, the water quality monitor of the present application includes a water inlet pipe 150. At least two of the turbidity detection assembly, residual chlorine detection assembly, and pH value detection assembly are connected to the water inlet pipe 150.

[0036] Among them, the turbidity detection assembly, the residual chlorine detection assembly, and the pH value detection assembly need to realize online monitoring, and the specific principle can refer to the patent (CN201821782403.6) applied online by the applicant, or refer to the online monitoring technology in the prior art (CN202122380108.6). The present application is mainly used for adjusting the water inflow in each detection assembly, therefore, the detection principle of each detection assembly is not described in detail, and only the adjustment mode of the water inflow is displayed.

[0037] Since the turbidity detection assembly, the residual chlorine detection assembly, and the pH value detection assembly have similar structures and all include flow cells, the present application mainly designs the structure of the flow cell. Specifically, as shown in Figure 2 、 3 Each flow cell is provided with a liquid inlet pipe and a liquid outlet pipe, and at least one flow cell is provided with a flow control assembly. The flow control assembly includes an adjusting valve and a tee pipe. The adjusting valve is arranged on the liquid inlet pipe and is used to adjust the flow of the liquid inlet pipe. The first end of the tee pipe is in communication with the liquid outlet pipe. A switch valve is arranged on the tee pipe to make the first end of the tee pipe in communication with the second end thereof or to make the first end of the tee pipe in communication with the third end thereof.

[0038] It can be understood that the present application designs the flow adjustment mode of the flow cell, and changing the adjustment mode of any flow cell can avoid the problems caused by using a flow meter to adjust the flow of the flow cell. Therefore, at least one flow cell is provided with a flow control assembly.

[0039] Based on the structure of the flow control assembly, it is assumed that the second end of the tee pipe is a conventional drainage end, and the third end of the tee pipe is a sampling end. In normal use, the development valve of the tee pipe controls the first end and the second end of the tee pipe to communicate, and the water body passes through each flow cell, cooperating with the corresponding detection probe (detector) in each flow cell, to achieve the purpose of detecting the water quality parameter.

[0040] When the flow in the flow cell needs to be adjusted, the development valve of the tee pipe is turned to control the first end and the third end of the tee pipe to communicate. A beaker or other container capable of measuring the volume of liquid is arranged below the third end of the tee pipe. The adjusting valve on the liquid inlet pipe of the flow cell is adjusted to control the amount of water entering the flow cell. The water discharged from the flow cell is measured by the beaker. Within a predetermined time, it can be judged whether the amount of water in the flow cell meets the requirements, so as to achieve the purpose of adjusting the flow in the flow cell.

[0041] The present application changes the flow adjustment mode of the flow cell, and uses the flow control assembly to achieve single adjustment of the flow of each flow cell. Unless there is an extreme unexpected situation, under normal conditions, there is no need to adjust the flow in each flow cell. This mode can avoid the problems of installation inconvenience and poor adjustment accuracy caused by setting a flow meter.

[0042] In some embodiments of the present application, in order to increase the detection parameters of water quality as much as possible, the present application is provided with a turbidity detection assembly, a residual chlorine detection assembly and a pH value detection assembly in communication with the water inlet pipeline. In a conventional design, the turbidity detection assembly, the residual chlorine detection assembly and the pH value detection assembly can be individually communicated with the water inlet pipeline to detect the corresponding parameters of water quality. In the present application, as shown in Figure 2 、 3 the liquid inlet end of the turbidity detection assembly is communicated with the water inlet pipeline 150, the liquid outlet end of the turbidity detection assembly is communicated with the liquid inlet end of the pH value detection assembly, and the liquid inlet end of the residual chlorine detection assembly is communicated with the water inlet pipeline; the liquid outlet end of the residual chlorine detection assembly and the liquid outlet end of the pH value detection assembly are respectively connected with a residual chlorine liquid discharge pipe 452 and a pH liquid discharge pipe 352.

[0043] It can be understood that the turbidity detection assembly and the pH value detection assembly are equivalent to being on one flow circuit, at this time, the flow of the two flow cells can be adjusted by controlling the flow of any one detection assembly. At the same time, the residual chlorine detection assembly is on another flow circuit in parallel with the pH value detection assembly, and the purpose is that the flow range of the flow cell in the residual chlorine detection assembly is greatly different from that of the turbidity detection assembly and the pH value detection assembly, so that the purpose of independent adjustment can be achieved. Of course, each flow cell corresponding to the turbidity detection assembly, the residual chlorine detection assembly and the pH value detection assembly can be provided with a flow control assembly, which can be set according to the requirements.

[0044] In some embodiments of the present application, in order to facilitate the display of the connection relationship between the turbidity detection assembly, the pH value detection assembly and the water inlet pipeline, as shown in Figure 2 、 3 the flow cell of the turbidity detection assembly is a turbidity flow cell 200, the flow cell of the pH value detection assembly is a pH flow cell 300, the liquid inlet pipe (turbidity liquid inlet pipe 220) of the turbidity flow cell 200 is connected with the water inlet pipeline 150, the liquid outlet pipe (turbidity liquid outlet pipe 230) of the turbidity flow cell 200 is connected with the liquid inlet pipe (pH liquid inlet pipe 320) of the pH flow cell 300, and the liquid outlet pipe (pH liquid outlet pipe 340) of the pH flow cell 300 is communicated with the pH liquid discharge pipe 3352. Of course, in addition to the corresponding turbidity flow cell 200 and pH flow cell 300, the turbidity detection assembly and the pH value detection assembly are also provided with other necessary types of detection probes or detection instruments (pH detection instrument 310, turbidity instrument 210), and other parts of the structure and the corresponding detection principle can be designed with reference to the prior art, and the present application will not be described here.

[0045] In some embodiments of the present application, theoretically, the turbidity flow cell 200 and the pH flow cell 300 can be provided with a flow control assembly for use together, or a flow control assembly can be provided for one of them, and both can achieve the purpose of adjusting the flow on the passage. In the present application, considering the principle of cost saving, as shown in Figure 2 、 3 , the pH flow cell 300 of the present application is provided with a flow control assembly, and the turbidity flow cell 200 is not provided with a flow control assembly, wherein the second end of the three-way pipe (pH three-way pipe 350) connected to the pH flow cell 300 is connected with the pH liquid discharge pipe 352. The flow control assembly provided on the pH flow cell 300 can not only satisfy the adjustment of the water amount entering the pH flow cell 300, but also the liquid inlet end of the pH flow cell 300 is equivalent to the liquid outlet end of the turbidity flow cell 200. Therefore, the adjusting valve (pH adjusting valve 330) provided on the liquid inlet pipe (pH liquid inlet pipe 320) of the pH flow cell 300 can realize the adjustment of the water outlet pressure of the turbidity flow cell 200, avoid the problem of bubbles existing in the instrument (turbidity flow cell 200), and ensure the detection accuracy of the turbidity meter 210.

[0046] In some embodiments of the present application, as shown in Figure 2 、 3 , the flow cell of the residual chlorine detection assembly in the present application is a residual chlorine flow cell 400, the liquid inlet pipe (residual chlorine liquid inlet pipe 420) of the residual chlorine flow cell 400 is connected with the water inlet pipeline 150, and the liquid outlet pipe (residual chlorine liquid outlet pipe 440) of the residual chlorine flow cell 400 is communicated with the residual chlorine liquid discharge pipe 452.

[0047] In some embodiments of the present application, since the flow requirements of the residual chlorine detection assembly are different from those of the other two detection assemblies, as shown in Figure 2 、 3 , the residual chlorine flow cell 400 of the present application is also provided with a flow control assembly, wherein the second end of the three-way pipe (residual chlorine three-way pipe 450) connected to the residual chlorine flow cell 400 is connected with the residual chlorine liquid discharge pipe 452. Of course, in addition to the residual chlorine flow cell 400, the residual chlorine detection assembly is also provided with other necessary types of detection probes or detection instruments (residual chlorine detection instrument 410), and other parts of the structure and the corresponding detection principle can be designed according to the prior art, and the present application will not be described here.

[0048] In some embodiments of the present application, the residual chlorine liquid discharge pipe 452 and the pH liquid discharge pipe 352 can be respectively discharged to a sewage pipeline, or used for water quality backflow (in the case of low water quality requirement), as shown in Figure 2 、 3As shown, in order to facilitate the centralized collection of the liquid discharged by the two liquid discharge pipes, the application also comprises a drain main pipe 140, and the residual chlorine liquid discharge pipe 452 and the pH liquid discharge pipe 352 are both communicated with the drain main pipe 140. The drain main pipe 140 can be connected with a sewage pipe or a backflow pipe. The arrangement of the drain main pipe 140 can reduce the number of pipes of the entire water quality monitor, and the structure is more simple and the cost is saved.

[0049] In some embodiments of the application, in order to facilitate the smooth discharge of the residual chlorine liquid discharge pipe 452, the pH liquid discharge pipe 352 and the drain main pipe 140, Figure 2 、 3 As shown, the application is provided with a connecting piece between the residual chlorine liquid discharge pipe 452, the pH liquid discharge pipe 352 and the drain main pipe 140, and the connecting piece comprises a water receiving funnel 141 communicated with the drain main pipe 140. The residual chlorine liquid discharge pipe 452 and the pH liquid discharge pipe 352 respectively extend into the corresponding water receiving funnel 141 and are arranged in gaps with the corresponding water receiving funnel 141. The water receiving funnel 141 can not only prevent liquid splashing, but also avoid the problem of affecting the drainage caused by air pressure and water pressure. At the same time, it can also ensure that the second end of each tee pipe is also in contact with the atmosphere, so that the external interference factors when the first end and the second end of each tee pipe are connected are consistent with the external interference factors when the first end and the third end of each tee pipe are connected, and the accuracy of the flow regulation in each flow cell is further improved.

[0050] It is worth noting that, in order to facilitate the display of each component of the application, Figure 2 、 3 As shown, the liquid inlet pipe and the liquid outlet pipe connected with the turbidity flow cell 200 are respectively a turbidity liquid inlet pipe 220 and a turbidity liquid outlet pipe 230. The liquid inlet pipe and the liquid outlet pipe connected with the pH flow cell 300 are respectively a pH liquid inlet pipe 320 and a pH liquid outlet pipe 340. The adjusting valve arranged on the pH flow cell 300 is a pH adjusting valve 330, the tee pipe arranged on the pH flow cell 300 is a pH tee pipe 350, and the on-off valve arranged on the pH tee pipe 350 is a pH on-off valve 351. The liquid inlet pipe and the liquid outlet pipe connected with the residual chlorine flow cell 400 are respectively a residual chlorine liquid inlet pipe 420 and a residual chlorine liquid outlet pipe 440. The adjusting valve arranged on the residual chlorine flow cell 400 is a residual chlorine adjusting valve 430, the tee pipe arranged on the residual chlorine flow cell 400 is a residual chlorine tee pipe 450, and the on-off valve arranged on the residual chlorine tee pipe 450 is a residual chlorine on-off valve 451.

[0051] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be direct connection, also can through intermediate medium indirectly connect, can be two element internal communication or two element's mutual action relationship. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned terms in the utility model according to specific circumstances.

[0052] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer" and so on is based on the orientation or position relationship shown in the drawing, or is the orientation or position relationship of the utility model product when using, just for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the terms "first", "second" and so on are only used for distinguishing description, and can not be understood as indicative or suggestive of relative importance.

[0053] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the claims involved.

Claims

1. A multi-parameter water quality monitor, comprising a water inlet pipe (150) to which at least two of turbidity detecting assembly, residual chlorine detecting assembly and pH value detecting assembly are connected in communication, each of the turbidity detecting assembly, the residual chlorine detecting assembly and the pH value detecting assembly comprising a flow cell, each flow cell being provided with a liquid inlet pipe and a liquid outlet pipe, characterized in that: At least one flow cell is provided with a flow control assembly; The flow control assembly comprises a regulating valve and a tee pipe, the regulating valve is arranged on the liquid inlet pipe and used for adjusting the flow of the liquid inlet pipe, and the first end of the tee pipe is communicated with the liquid outlet pipe; The tee pipe is provided with a switch valve to make the first end of the tee pipe communicated with the second end thereof, or The first end of the tee pipe is communicated with the third end thereof.

2. The multi-parameter water quality monitor of claim 1, wherein: The water inlet pipe (150) is communicated with a turbidity detection assembly, a residual chlorine detection assembly and a pH value detection assembly, The liquid inlet end of the turbidity detection assembly is communicated with the water inlet pipe (150), the liquid outlet end of the turbidity detection assembly is communicated with the liquid inlet end of the pH value detection assembly, and the liquid inlet end of the residual chlorine detection assembly is communicated with the water inlet pipe (150); The liquid outlet end of the residual chlorine detection assembly and the liquid outlet end of the pH value detection assembly are respectively connected with a residual chlorine liquid outlet pipe (452) and a pH liquid outlet pipe (352).

3. The multi-parameter water quality monitor of claim 2, wherein: The flow cell of the turbidity detection assembly is a turbidity flow cell (200), and the flow cell of the pH value detection assembly is a pH flow cell (300); The liquid inlet pipe of the turbidity flow cell (200) is connected with the water inlet pipe (150), the liquid outlet pipe of the turbidity flow cell (200) is connected with the liquid inlet pipe of the pH flow cell (300), and the liquid outlet pipe of the pH flow cell (300) is communicated with the pH liquid outlet pipe (352).

4. The multi-parameter water quality monitor of claim 3, wherein: The pH flow cell (300) is provided with a flow control assembly, and the second end of the tee pipe connected to the pH flow cell (300) is connected with the pH liquid outlet pipe (352).

5. The multi-parameter water quality monitor of any one of claims 2-4, wherein: The flow cell of the residual chlorine detection assembly is a residual chlorine flow cell (400), the liquid inlet pipe of the residual chlorine flow cell (400) is connected with the water inlet pipe (150), and the liquid outlet pipe of the residual chlorine flow cell (400) is communicated with the residual chlorine liquid outlet pipe (452).

6. The multi-parameter water quality monitor of claim 5, wherein: The residual chlorine flow cell (400) is provided with a flow control assembly, and the second end of the tee pipe connected to the residual chlorine flow cell (400) is connected with the residual chlorine liquid outlet pipe (452).

7. The multi-parameter water quality monitor of claim 2, 3, 4 or 6, wherein: A water drainage main pipe (140) is further included, and the residual chlorine liquid outlet pipe (452) and the pH liquid outlet pipe (352) are both communicated with the water drainage main pipe (140).

8. The multi-parameter water quality monitor of claim 7, wherein: A connecting piece is arranged between the residual chlorine liquid outlet pipe (452), the pH liquid outlet pipe (352) and the water drainage main pipe (140), and the connecting piece comprises a water receiving funnel (141) communicated with the water drainage main pipe (140), the residual chlorine liquid outlet pipe (452) and the pH liquid outlet pipe (352) respectively extend into the corresponding water receiving funnel (141) and are arranged in gaps with the corresponding water receiving funnel (141).

9. The multi-parameter water quality monitor of claims 1, 2, 3, 4, 6, or 8, wherein: A mounting cabinet (100) is further included, and a mounting cavity (130) is arranged inside the mounting cabinet (100), and a display screen (110) is arranged on the upper surface of the mounting cabinet (100).

10. The multi-parameter water quality monitor of claim 9, wherein: Two moving recesses (120) are arranged on the outer side wall of the mounting cabinet (100) and are recessed oppositely.

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