Water quality monitoring and analysis device for environmental protection

Abstract

The application relates to the technical field of water quality detection equipment, in particular to water quality monitoring and analyzing equipment for environmental protection, which comprises a shell and a detection main body arranged in the shell; the detection main body comprises multiple flow-through units which are sequentially stacked and detachably connected between adjacent flow-through units; a spiral flow channel is formed in the flow-through unit; a sample inlet and a sample outlet are respectively arranged at the two ends of the spiral flow channel on the upper and lower sides of the flow-through unit; the spiral flow channels in the flow-through units are sequentially connected through the sample inlet and the sample outlet to form a continuous spiral detection channel; multiple detection units are arranged along the length direction of the detection channel at intervals, and the detection units are controlled through a control panel. The spiral flow channel design improves the space utilization, reduces the maintenance difficulty, enhances the versatility of the equipment, and is suitable for the detection of multiple water quality parameters.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water quality detection equipment, in particular to a water quality monitoring and analysis equipment for environmental protection. BACKGROUND

[0002] The water quality detector is a professional instrument for analyzing the content of water quality components, mainly used for measuring COD, ammonia nitrogen, total phosphorus, turbidity, PH and other parameters in water. With the improvement of environmental protection requirements, the water quality detector is increasingly important in the fields of sewage discharge monitoring, water resource protection and the like. The existing water quality detector usually integrates multiple independent measuring devices, resulting in a large equipment size, which is not conducive to miniaturization and portability. In addition, the maintenance difficulty of the existing equipment is high, and the replacement and calibration process of the detection unit is complex, which is difficult to meet the diversified needs of different users. Therefore, there is an urgent need for a water quality monitoring and analysis equipment with high space utilization, convenient maintenance and strong versatility. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a water quality monitoring and analysis equipment for environmental protection to solve the problems in the prior art.

[0004] The water quality monitoring and analysis equipment for environmental protection provided by the present application adopts the following technical solution:

[0005] A water quality monitoring and analysis equipment for environmental protection, comprising a shell and a detection main body arranged in the shell; the detection main body comprises multiple flow-through units stacked in sequence, and adjacent flow-through units are detachably connected; a spiral flow channel is formed inside the flow-through unit, sample inlets and sample outlets are respectively arranged at both sides of the flow-through unit at both ends of the spiral flow channel, and the spiral flow channels in the flow-through units are sequentially connected through the sample inlets and the sample outlets to form a continuous spiral detection channel; multiple detection units are arranged along the length direction of the detection channel, and the detection units are controlled by a control panel.

[0006] By adopting the above technical solution, multiple flow-through units are vertically stacked to form a tower structure, water samples enter the detection channel from the uppermost flow-through unit, and are detected by the detection units during the flow. Under the design that the spiral channels of adjacent flow-through units are connected, the spiral channels of multiple flow-through units are sequentially connected to form a continuous spiral detection channel, the spiral detection channel occupies less space, and the length of the water sample passing through is increased, so that more detection units can be arranged along the detection channel, multi-point detection and multi-mode detection are realized to reduce the interference of abnormal results and improve the first pass yield of the detection results. This structural design improves the space utilization, reduces the maintenance difficulty, and enhances the versatility of the equipment, which is suitable for the detection of multiple water quality parameters.

[0007] Optionally, the bottom of the detection body is detachably provided with a liquid storage bottle, and the liquid storage bottle is in communication with the sample outlet of the bottommost layer of the flow-through unit.

[0008] By using the above technical scheme, the liquid storage bottle is used to collect the detection water sample, and re-detection is performed when necessary. The water flow sensor is arranged in the detection channel to sense the flow state of the water sample in the detection channel, and the auxiliary control panel determines the selection of the detection feature points of the detection unit (for example, only when the two interval water flow sensors both detect the water sample, the detection value in this time is selected as the preferred characteristic detection value, thereby reducing the workload of manual selection and marking).

[0009] Optionally, the top of the detection body is provided with a sample inlet structure, the sample inlet structure comprises a slow flow bottle, the top of the slow flow bottle is provided with a filter unit, the bottom side of the slow flow bottle is in communication with the sample inlet of the topmost layer of the flow-through unit, and the connection position of the slow flow bottle and the detection body is provided with an electric control valve, and a plurality of liquid level detectors are arranged in the slow flow bottle.

[0010] By using the above technical scheme, the slow flow bottle cooperates with the liquid level detector and the electric control valve to open the electric control valve when the water sample in the slow flow bottle reaches a certain amount, so that the water sample enters the detection channel, reduces the generation of bubbles, avoids the situation that the water sample directly enters the detection flow channel and easily mixes with air, and reduces the interference of bubbles on the detection result. The filter unit can intercept the suspended matter meeting the interception condition to reduce the influence of the suspended matter on the detection accuracy after entering the detection channel, and the prevention of the entry of the suspended matter can prevent the blockage of the detection channel.

[0011] Optionally, the flow-through unit comprises an upper connecting plate and a lower connecting plate which are fixedly connected with each other, the bottom of the upper connecting plate is provided with a first spiral groove, the top of the lower connecting plate is provided with a second spiral groove which is in butt joint with the first spiral groove, and the first spiral groove and the second spiral groove jointly form a spiral flow channel; the upper connecting plate and the lower connecting plate are provided with a reserved hole for mounting the detection unit, and the sample inlet and the sample outlet in the flow-through unit are respectively arranged at the top of the upper connecting plate and the bottom of the lower connecting plate.

[0012] Optionally, the upper connecting plate and the lower connecting plate are both annular plates of regular polygons, the spiral structure of the spiral flow channel of a single flow-through unit is one incomplete spiral, and adjacent flow-through units are staggered and spliced; and the regular polygon is set as regular N deformation, the spiral structure of the spiral flow channel of a single flow-through unit is (N-1) / N complete spirals, and adjacent flow-through units are staggered and spliced by an angle of 360° / N to form a continuous spiral detection channel.

[0013] By adopting the technical scheme, the annular structure of the upper connecting plate and the lower connecting plate can fully utilize the space of the non-helical flow channel, so that the layout of the application is more compact. In addition, compared with the design of a complete helix, the design of the non-complete helix of the helical flow channel of the single flow unit reduces the requirement for the thickness of the flow unit. Compared with the design of multiple complete helix, the processing difficulty is reduced. In order to maintain the communication of the helical flow channels between adjacent flow units, the adjacent flow units are installed staggered when butt jointed, so as to ensure the continuity of the detection channel.

[0014] Optionally, the opening of the sample inlet and the sample outlet is provided with a sealing element.

[0015] By adopting the technical scheme, the sealing element is arranged at the opening of the sample inlet and the sample outlet, so as to ensure the sealing effect of the helical flow channel of the adjacent flow unit.

[0016] Optionally, the upper connecting plate and the lower connecting plate are provided with mounting grooves, and the upper and lower mounting grooves form a mounting port after being closed, which is used for mounting the detection unit.

[0017] By adopting the technical scheme, the structure design can provide more choices for the mounting position of the detection unit, and is also convenient for the internal wiring of the components in the technical scheme.

[0018] Optionally, the detection unit includes a light emitting element and a light detecting element, and the light emitting element and the light detecting element are arranged on both sides of the helical flow channel, and the light emitting element and the light detecting element are electrically connected with the control board.

[0019] Optionally, the detection unit includes multiple water quality sensors, and the probes of the water quality sensors extend into the detection channel and are electrically connected with the control board.

[0020] In summary, the application has at least one of the following beneficial technical effects:

[0021] 1. In the design of the communication of the helical channels of adjacent flow units, the helical channels of multiple flow units are sequentially communicated to form a continuous helical detection channel, the space occupation of the helical detection channel is smaller, and the length of the water sample passing through is increased, so that more detection units can be arranged along the detection channel, multi-point detection and multi-mode detection are realized to reduce the interference of abnormal results and improve the one-time qualified rate of the detection result. This structure design improves the space utilization, reduces the maintenance difficulty, and enhances the universality of the equipment, which is suitable for the detection of multiple water quality parameters;

[0022] 2. The use of a storage bottle to collect the water sample for testing, and to retest if necessary. A plurality of water flow sensors are provided in the detection channel, which are used to sense the flow state of the water sample in the detection channel, and the auxiliary control panel determines the selection of the detection feature points of the detection unit (for example, only when both the two interval water flow sensors detect the water sample, the detection value at this time is selected as the preferred characteristic detection value, reducing the workload of manual selection of markers);

[0023] 3. The slow flow bottle cooperates with the liquid level detector and the electric control valve, which can open the electric control valve to make the water sample enter the detection channel after the water sample in the slow flow bottle reaches a certain amount, reducing the generation of bubbles, avoiding the situation that the water sample directly enters the detection flow channel and easily mixes with air, and reducing the interference of bubbles on the detection result. The filtering unit can intercept suspended solids that meet the interception conditions to reduce the influence of suspended solids on the detection accuracy after entering the detection channel, and the prevention of the entry of suspended solids can prevent the blockage of the detection channel. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of a water quality monitoring and analysis equipment for environmental protection.

[0025] Figure 2 is a structural schematic diagram of a single flow-through unit in an open state.

[0026] BRIEF DESCRIPTION OF DRAWINGS:

[0027] 1, housing; 2, detection main body; 3, flow-through unit; 31, upper connecting plate; 32, lower connecting plate; 33, second spiral groove; 34, sealing cap; 35, mounting groove; 36, mounting frame; 4, spiral flow channel; 5, sample inlet; 6, sample outlet; 7, detection unit; 8, storage bottle; 9, slow flow bottle; 10, filtering unit; 11, electric control valve. DETAILED DESCRIPTION

[0028] The following will be described in detail in combination with the accompanying Figures 1-2 The present application will be further described in detail.

[0029] The embodiments of the present application disclose a water quality monitoring and analysis equipment for environmental protection.

[0030] Embodiment 1:

[0031] Reference Figure 1 and Figure 2The utility model provides a water quality monitoring and analysis equipment for environmental protection, including shell 1 and the detection main part 2 of setting in shell 1, wherein, the detection main part 2 includes a plurality of sequential stacking flow unit 3, and the detachable connection between adjacent flow unit 3, the spiral flow channel 4 is shaped inside flow unit 3, and the upper and lower sides of flow unit 3 are respectively provided with sample inlet 5 and sample outlet 6 at the both ends of spiral flow channel 4, and the spiral flow channel 4 in flow unit 3 is sequentially communicated to form continuous spiral detection channel through sample inlet 5 and sample outlet 6, and a plurality of detection units 7 are arranged at intervals along the length direction of detection channel, and detection unit 7 is controlled through control panel.

[0032] A plurality of flow units 3 are vertically stacked to form a tower structure, water samples enter the detection channel from the uppermost flow unit 3, and are detected by the detection units 7 during the flow. With the design of the communication of the spiral channels of adjacent flow units 3, the spiral channels of the plurality of flow units 3 are sequentially communicated to form a continuous spiral detection channel, the spiral detection channel occupies less space, and the length of the water sample passing through is increased, so that more detection units 7 can be arranged along the detection channel, realizing multi-point detection and multi-mode detection to reduce the interference of abnormal results and improve the first-time pass rate of the detection results.

[0033] In addition, in order to ensure the stability and reliability of the water quality detection operation, the maintenance frequency of the detection units 7 has certain requirements (for example, the cleaning frequency of the water quality sensor is usually once a day, and the inspection and calibration frequency also needs to be reasonably arranged), the plurality of flow units 3 in the utility model can well expose the detection units 7 after being detached, reducing the difficulty of maintaining and replacing the above-mentioned detection units 7. In addition, the adjacent flow units 3 and the detection units 7 and the flow units 3 are detachably connected, so that the user can customize the type, quantity and layout position of the detection units 7, and under the premise of maintaining the sealing of the above-mentioned detection channel, the user can customize and adjust the detection units 7 of the utility model according to the emphasis index of the detection operation, improving the universality of the utility model.

[0034] In the embodiment, the control panel includes a wireless communication module for transmitting relevant detection parameters to an external device. The shell 1 is a spliced shell and can be disassembled and assembled. The bottom of the detection main body 2 is detachably provided with a liquid storage bottle 8, which is in communication with the sample outlet 6 of the bottommost flow unit 3, realizing the collection of the detected water sample and retesting when necessary. A plurality of water flow sensors are arranged in the detection channel, which are used to sense the flow state of the water sample in the detection channel, and assist the control panel in selecting the detection feature points of the detection units 7 (for example, only when both of the two interval water flow sensors detect the water sample, the detection value at this time is selected as the preferred characteristic detection value, reducing the workload of manual selection and marking).

[0035] In the embodiment, the top of the detection main body 2 is provided with a sample inlet structure, which comprises a slow-flow bottle 9, the top of the slow-flow bottle 9 is detachably provided with a filter unit 10, the bottom side of the slow-flow bottle 9 is in communication with the top of the detection channel, and the connection part of the slow-flow bottle 9 and the detection main body 2 is provided with an electrically controlled valve 11, and the slow-flow bottle 9 is provided with a plurality of liquid level detectors, and the plurality of liquid level detectors and the electrically controlled valve 11 are electrically connected with the control board.

[0036] The slow-flow bottle 9 cooperates with the liquid level detector and the electrically controlled valve 11, so that when the water sample in the slow-flow bottle 9 reaches a certain amount, the electrically controlled valve 11 is opened to make the water sample enter the detection channel, thereby reducing the generation of air bubbles, avoiding the situation that the water sample directly enters the detection flow channel and easily mixes with air, and reducing the interference of air bubbles on the detection result. The filter unit 10 can intercept suspended solids that meet the interception conditions to reduce the influence of suspended solids on the detection accuracy after entering the detection channel (for example, it can affect the detection accuracy of the absorbance detection unit 7), and preventing the entry of suspended solids can prevent the blockage of the detection channel. The filter unit 10 can be selected according to the characteristics of the detection water sample and the target detection parameter, such as a metal filter screen or a flat-bottomed funnel with a filter membrane. If a glass fiber filter membrane is selected, the structure of the slow-flow bottle 9 is similar to that of the existing suction filter bottle, which cooperates with an air suction pump to achieve effective filtration, that is, similar to the existing suspended solids determination experiment. The metal filter screen can be a metal filter screen with a clamping jaw to facilitate the fixation of the metal filter screen at the bottle opening of the slow-flow bottle 9. In order to reduce the influence of the selection of the filtration conditions (filter hole size) of the suspended solids filtration step on water quality detection, in the Water Pollution Source Online Monitoring System Acceptance Technical Specification (Trial), different error ranges are defined for different ranges of COD, such as for COD < 30 mg / L, a low-concentration quality control sample close to the actual water sample concentration can be used instead, and the difference between the two should be within ± 10%. Therefore, on the basis of meeting the above requirements, the filter unit 10 will not have an unacceptable influence on the detection result. The filter unit 10 can also be connected to the slow-flow bottle 9 in a detachable manner through a fixed clamp or a bandage.

[0037] Specifically, in the embodiment, the flow-through unit 3 comprises an upper connecting plate 31 and a lower connecting plate 32 fixedly connected with each other, the bottom of the upper connecting plate 31 is provided with a first spiral groove, the top of the lower connecting plate 32 is provided with a second spiral groove 33 in abutment with the first spiral groove, and the first spiral groove and the second spiral groove 33 jointly form a spiral flow channel 4. The upper connecting plate 31 and the lower connecting plate 32 are provided with reserved holes for mounting the detection unit 7, the sample inlet 5 and the sample outlet 6 in the flow-through unit 3 are respectively provided on the top of the upper connecting plate 31 and the bottom of the lower connecting plate 32, and the openings of the sample inlet 5 and the sample outlet 6 are respectively provided with sealing members.

[0038] In the embodiment, the upper connecting plate 31 and the lower connecting plate 32 are both annular plates with regular polygons, the spiral structure of the spiral flow channel 4 of the single flow-through unit 3 is a non-complete spiral, and the adjacent flow-through units 3 are staggered and spliced; when set as regular N deformation, the spiral structure of the spiral flow channel 4 of the single flow-through unit 3 is (N-1) / N complete spirals, and the adjacent flow-through units 3 are staggered and spliced by an angle of 360° / N to form a continuous spiral detection channel. Preferably, in the embodiment, the upper connecting plate 31 and the lower connecting plate 32 are both regular hexagons, the spiral structure of the spiral flow channel 4 of the single flow-through unit 3 is 5 / 6 complete spirals, and the adjacent flow-through units 3 are staggered and spliced by an angle of 60° to form a continuous spiral detection channel.

[0039] The annular structure of the upper connecting plate 31 and the lower connecting plate 32 can fully utilize the space of the non-spiral flow channel 4, so that the layout of the present application is more compact. In addition, compared with the design of a complete spiral, the design of the non-complete spiral structure of the spiral flow channel 4 of the single flow-through unit 3 reduces the requirement for the thickness of the flow-through unit 3. Compared with the design of multiple complete spirals, the processing difficulty is reduced. In order to maintain the communication of the spiral flow channel 4 between the adjacent flow-through units 3, the adjacent flow-through units 3 are staggered and installed when butt-jointed to ensure the continuity of the detection channel. Sealing elements are arranged at the openings of the sample inlet 5 and the sample outlet 6 to ensure the sealing effect of the spiral flow channel 4 of the adjacent flow-through units 3.

[0040] The fixed connection between the upper connecting plate 31 and the lower connecting plate 32 can be integrally formed or bolted. If integrally formed, the spiral flow channel 4 itself has excellent sealing effect; if bolted, a flow-through pipe for water sample flow is placed in the spiral flow channel 4 to improve the sealing effect.

[0041] The inner side of the upper connecting plate 31 is provided with a mounting bracket 36 for mounting the detection unit 7. The side wall of the flow-through pipe is provided with a reserved hole for mounting the detection unit 7, and the unused reserved hole can be sealed by a sealing cap 34. In the embodiment, the upper connecting plate 31 and the lower connecting plate 32 are both provided with mounting grooves 35, and the mounting grooves 35 form a mounting opening after being closed, which is used for mounting the detection unit 7. This structure design can provide more choices for the installation position of the detection unit 7, and is also convenient for the internal wiring of the components in the technical solution.

[0042] The detection unit 7 includes a light emitting element and a light detecting element, and the light emitting element and the light detecting element are arranged on both sides of the spiral flow channel 4. The light emitting element and the light detecting element are electrically connected with the control board.

[0043] Light is a form of energy. When light radiation interacts with matter, several processes occur, including reflection, scattering, absorption, fluorescence / phosphorescence, and photochemical reactions. When light passes through a sample, the amount of light absorbed is the difference between the incident radiation and the transmitted radiation; this is called absorbance. Since absorbance is usually linearly related to water sample concentration and optical path length, and different molecules can produce different absorption peaks in different spectral curves, different wavelengths of ultraviolet-visible light can be used to detect target parameters. In ultraviolet-visible spectroscopy, the wavelength range of ultraviolet light is typically 100-400 nm, and the visible light range is approximately 400-760 nm. Within these ranges, the light emitting and detecting devices corresponding to the target can be selected. For example, UV254 (ultraviolet light with a wavelength of 254 nm) is one of the commonly used evaluation standards for water quality testing. The absorbance detection unit 7 mainly includes a light emitter and a light detector. The light emitter can be used in conjunction with a spectrometer to detect water samples when necessary. In actual operation, the light emitter and the light detector belonging to the same detection unit 7 can be distributed on the upper and lower sides or left and right sides of the same position of the spiral flow channel 4 and can be fixed to the flow unit 3 by bolt connection, snap-fit ​​or binding. The line connecting the light emitter and the light detector passes through the center of the cross-section of the spiral flow channel 44. The aforementioned light emitter provides illumination at the target wavelength. For the purpose of miniaturization, the light emitter can be implemented using an LED light source combined with a photodiode PIN, reducing costs and further reducing the size of the instrument. The function of the aforementioned light detector is to convert the light signal passing through the water sample area into an electrical signal. Similar to the aforementioned light emitter, different light detectors have different sensitivities and wavelength ranges. That is to say, for light emitters and light detectors belonging to the same detection unit 7, they correspond to the characteristics of the target detection index. The parameters of the detection unit 7 for different detection targets are different (except for the case of multi-point detection, which is a repeated detection method for the same detection index). The appropriate light detector can be used according to the wavelength range required for measurement.

[0044] Example 2:

[0045] The difference between this embodiment and Embodiment 1 is that the detection unit 7 is different.

[0046] In this embodiment, the detection unit 7 includes multiple water quality sensors. The probes of the water quality sensors extend into the detection channel. All the multiple water quality sensors are electrically connected to the control board so that they can be controlled by the control board.

[0047] In the field of water quality detection, water quality sensors are most widely used and can be miniaturized. For the same detection index, the detection results of the sensor detection and the absorbance detection can be verified with each other to improve the objectivity of the detection results. There are many types of water quality sensors, such as a PH sensor using a glass electrode method, which uses a PH glass electrode as an indicating electrode, a saturated mercury electrode as a reference electrode, and forms a primary cell with the two electrodes and the measured solution, measures the electromotive force of the cell to obtain the PH of the sample, and the change of the sample PH will cause the change of the potential difference, which is represented as a PH reading on the acidity meter, and the accuracy is preferably 0.05-0.1 units; such as a scattered light type turbidity sensor, which converts the scattered light intensity generated by the scattering of high-intensity infrared light on the suspended particles in the water sample into a turbidity value by comparing it with the internal calibration value, and the maximum range is preferably 1000 NTU, and the accuracy is 2% FS; such as a conductivity sensor using a four-electrode method, when current passes through the liquid, the ions in the liquid are attracted by the current, thereby generating conductivity, and the accuracy is preferably 10 us / cm; such as an ammonia nitrogen sensor using a selective ion electrode method, such as an ammonia ion selective electrode directly detecting ammonium ions in the water environment to determine the concentration of ammonia nitrogen, and the maximum range is preferably 100 mg / L, and the accuracy is 5% FS.

[0048] It is worth noting that the above-mentioned detection unit 7 needs to be periodically maintained regardless of whether it uses the absorbance detection method or the sensor detection method, such as removing dirt and attachments on the light window (which affects the transmission of light signals between the light emitting element and the light detecting element), cleaning the dirt and attachments on the sensor probe and recalibrating, and the calibration period is related to the type of sensor, which varies from 2 weeks to 24 months, depending on the actual needs.

[0049] The implementation principle of the water quality monitoring and analysis equipment for environmental protection is that a plurality of flow-through units 3 are vertically stacked to form a tower structure, the water sample enters the detection channel from the uppermost flow-through unit 3, and is detected by the detection unit 7 during the flow-through. Under the design that the spiral channels of adjacent flow-through units 3 are communicated, the spiral channels of the plurality of flow-through units 3 are sequentially communicated to form a continuous spiral detection channel, the space occupation of the spiral detection channel is smaller, and the length of the water sample passing through is increased, so that more detection units 7 can be arranged along the detection channel to realize multi-point detection and multi-mode detection to reduce the interference of abnormal results and improve the first pass yield of the detection results. This structure design improves the space utilization, reduces the maintenance difficulty, and enhances the versatility of the equipment, which is suitable for the detection of various water quality parameters.

[0050] In the present application, it needs to be understood that the terms "intermediate", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0051] In the present application, unless otherwise explicitly specified and limited, the first feature "on" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. The meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A water quality monitoring and analysis device for environmental protection, characterized in that: The device includes a housing (1) and a detection body (2) disposed within the housing (1); the detection body (2) includes multiple sequentially stacked flow units (3), which are detachably connected to each other; a spiral flow channel (4) is formed inside the flow unit (3), and an inlet (5) and an outlet (6) are respectively opened at both ends of the spiral flow channel (4) on the upper and lower sides of the flow unit (3), and the spiral flow channel (4) in the flow unit (3) is sequentially connected through the inlet (5) and the outlet (6) to form a continuous spiral detection channel; multiple detection units (7) are spaced apart along the length of the detection channel, and the detection units (7) are controlled by a control board; The flow unit (3) includes an upper connecting plate (31) and a lower connecting plate (32) fixedly connected to each other. The bottom of the upper connecting plate (31) is provided with a first spiral groove, and the top of the lower connecting plate (32) is provided with a second spiral groove (33) that connects with the first spiral groove. The first spiral groove and the second spiral groove (33) together form a spiral flow channel (4). The upper connecting plate (31) and the lower connecting plate (32) are provided with reserved holes for installing the detection unit (7). The inlet (5) and outlet (6) of the flow unit (3) are respectively opened at the top of the upper connecting plate (31) and the bottom of the lower connecting plate (32). The upper connecting plate (31) and the lower connecting plate (32) are both regular polygonal annular plates and are set as regular N-sided polygons. The spiral structure of the spiral flow channel (4) of a single flow unit (3) is (N-1) / N complete spirals. Then, adjacent flow units (3) are spliced ​​together at an angle of 360° / N to form a continuous spiral detection channel.

2. The water quality monitoring and analysis equipment for environmental protection according to claim 1, characterized in that: The bottom of the detection body (2) is detachably provided with a liquid storage bottle (8), and the liquid storage bottle (8) is connected to the sample outlet (6) of the bottom flow unit (3).

3. The water quality monitoring and analysis equipment for environmental protection according to claim 1, characterized in that: The top of the detection body (2) is provided with a sample injection structure, which includes a slow-flow bottle (9). The top of the slow-flow bottle (9) is provided with a filter unit (10). The bottom side of the slow-flow bottle (9) is connected to the sample inlet (5) of the top flow unit (3). An electric control valve (11) is provided at the connection between the slow-flow bottle (9) and the detection body (2). Multiple liquid level detectors are provided inside the slow-flow bottle (9). The multiple liquid level detectors and the electric control valve (11) are all electrically connected to the control board.

4. The water quality monitoring and analysis equipment for environmental protection according to claim 1, characterized in that: Both the inlet (5) and outlet (6) are equipped with sealing elements.

5. A water quality monitoring and analysis device for environmental protection according to claim 1, characterized in that: Both the upper connecting plate (31) and the lower connecting plate (32) are provided with mounting grooves (35), and the upper and lower mounting grooves (35) form a mounting opening after being joined together, for mounting the above-mentioned detection unit (7).

6. A water quality monitoring and analysis device for environmental protection according to claim 1, characterized in that: The detection unit (7) includes a light emitter and a light detector, which are disposed on both sides of the spiral flow channel (4), and both the light emitter and the light detector are electrically connected to the control board.

7. The water quality monitoring and analysis equipment for environmental protection according to claim 1, characterized in that: The detection unit (7) includes multiple water quality sensors, the probes of which extend into the detection channel and are all electrically connected to the control board.

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