CN220912979U - Water turbidity measuring device - Google Patents

Abstract

The utility model discloses a water turbidity measuring device, which is used for carrying out turbidity measurement on a water sample to be measured, and comprises a flow cell and an equipment cavity which are detachably connected, wherein a turbidity sensor is arranged in the equipment cavity, a flow passage is arranged in the flow cell, a sensing end of the turbidity sensor stretches into the flow passage, the flow passage comprises a detection cavity, the detection cavity extends vertically upwards along the water flow direction, the sensing end is positioned at one side in the detection cavity, and a detection window faces to the other side in the detection cavity; the turbidity sensor further comprises an emission window, and the emission window is positioned at the top of the detection cavity; an opening is formed in the side wall of the detection cavity on the opposite side of the detection window, and a distance is reserved between the bottom of the opening and the emission window. The utility model can ensure that the water sample to be measured is not contacted with the emission window, and can avoid the pollution substances attached to the emission window due to the contact with the water sample to be measured, thereby avoiding the drift of the measurement signal.

Description

Water turbidity measuring device

Technical Field

The utility model relates to the field of turbidity detection of water samples to be detected, in particular to a water turbidity measuring device.

Background

The measurement principle of the traditional water turbidity measurement device is based on an optical principle, when the concentration or turbidity degree of suspended particles in a water body is increased, the transmission capability of light in the water body is weakened, and the scattering is increased, so that a certain relationship exists between the intensity of transmitted and scattered light and the turbidity of the water body, and the turbidity value of the water body can be obtained through conversion and calculation of an analysis circuit.

The conventional water turbidity measuring device generally comprises a transmission light source, a receiver and an analysis circuit, wherein a sensor generally adopts a light emitting diode capable of emitting light with specific wavelength, when the light emitted by the light source passes through a water sample to be measured, suspended particles in the light can influence the transmission and scattering of the light, a part of the light can directly transmit through the particles, and a part of the light can scatter with the particles and change the original transmission direction of the light; the sensor also includes a receiver for receiving the transmitted and scattered light, the receiver typically including a photosensitive element (e.g., a photodiode or a photo diode) for converting the light signal into an electrical signal, the received light signal being processed and analyzed by an analysis circuit in the sensor, the analysis circuit calculating a value related to turbidity or suspended particle concentration based on the intensity and characteristics of the received light signal.

However, in the traditional water turbidity measuring device at present, the light source window is directly contacted with the water sample to be measured, so that suspended matters in the water sample to be measured are easily attached to the light source window, light emitted by the light source is blocked, the light received and scattered by the suspended matters in the water sample to be measured is weakened, and further, a measuring result is greatly deviated, so that the measuring result is inaccurate.

Aiming at the defects in the prior art, the structure of the traditional water turbidity measuring device is improved.

Disclosure of utility model

The utility model aims to provide a water turbidity measuring device, which solves the technical problems that in the traditional water turbidity measuring device, a light source window is directly contacted with a water sample to be measured, suspended matters in the water sample to be measured are easy to attach to the light source window, so that light emitted by a light source is blocked, light received and scattered by the suspended matters in the water sample to be measured is weakened, and further, a measuring result has larger deviation, and the measuring result is inaccurate.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The device comprises a detachably connected flow cell and a device cavity, wherein a turbidity sensor is arranged in the device cavity, a flow channel is arranged in the flow cell, a sensing end of the turbidity sensor stretches into the flow channel, the sensing end comprises a detection window, and a photosensitive receiver is arranged in the detection window;

The flow channel comprises a detection cavity, the detection cavity extends vertically upwards along the water flow direction, the sensing end is positioned at one side in the detection cavity, the detection window faces the other side in the detection cavity, and the water sample to be detected can flow from the bottom of the detection cavity to the top of the detection cavity at the other side of the detection cavity;

The turbidity sensor further comprises an emission window, wherein the emission window is positioned at the top of the detection cavity, a light source is arranged in the emission window, and the light source faces the bottom of the detection cavity;

An opening is formed in the side wall of the detection cavity on the opposite side of the detection window, and a distance is reserved between the bottom of the opening and the emission window.

The working principle of the utility model is as follows: after the water sample to be measured enters the flow channel, the water sample flows from the bottom of the detection cavity to the top of the detection cavity, and when the liquid level of the water sample to be measured reaches the bottom of the opening, the water sample overflows from the opening to form the detection cavity, so that the water sample to be measured is not contacted with the emission window, the emission window can be prevented from being attached with pollutants due to the contact of the water sample to be measured, and the drift of measurement signals is avoided.

Preferably, the flow channel further comprises a first vertical flow channel, the first vertical flow channel extends downwards vertically along the water flow direction, the outflow end of the first vertical flow channel is communicated with a first transverse flow channel, the outflow end of the first transverse flow channel is communicated with the inflow end of the detection cavity, the opening is communicated with a second vertical flow channel, and the second vertical flow channel extends downwards vertically along the water flow direction.

The whole flow channel forms a bending type, is similar to a U-shaped structure, so that the whole volume of the turbidity measuring device is reduced, equipment is miniaturized easily, and the system integration is facilitated.

Preferably, the two ends of the runner are provided with a water inlet and a water outlet, the water inlet is communicated with the first vertical runner, a vertical upward extension section is arranged at the position of the first vertical runner higher than the water inlet, an exhaust hole is formed in the extension tail end of the extension section, and a water pressing plate is covered above the exhaust hole.

The air vent is used for smoothly discharging air bubbles in the water sample to be tested, which flows in from the water inlet, preventing the air bubbles from flowing into the follow-up flow channel along with the water flow and interfering with measurement, and the water pressure plate is used for preventing the water sample to be tested in the first vertical flow channel from leaking out of the air vent.

Preferably, the inner peripheral dimensions of the detection cavity are larger than the inner peripheral dimensions of the first vertical flow channel, the first transverse flow channel and the second vertical flow channel.

Thus, the liquid to be measured flows into the first vertical flow channel and the first transverse flow channel, the flow velocity of the water sample to be measured in the flow channel is faster because the inner peripheral dimensions of the first vertical flow channel and the first transverse flow channel are narrower, after the water sample to be measured enters the detection cavity, the flow velocity of the water sample to be measured is slowed down because the inner peripheral dimensions of the detection cavity are larger than the inner peripheral dimensions of the first vertical flow channel and the first transverse flow channel, the measurement of the turbidity sensor is facilitated, the accuracy of the measurement result is ensured, then the water sample to be measured flows into the second vertical flow channel, and after the inner peripheral dimensions of the second vertical flow channel are smaller than the inner peripheral dimensions of the detection cavity, the flow velocity is accelerated, the water sample to be measured can be discharged out of the flow cell more quickly, and the inlet and outlet flow velocity are arranged quickly, so that the water sample to be measured can be updated timely, and the turbidity sensor can respond to the turbidity change condition of the water sample to be measured timely;

In addition, the inner peripheral dimension of the detection cavity is larger than that of the first vertical flow channel, the first transverse flow channel and the second vertical flow channel, so that the flow speed of the water sample to be detected in the first vertical flow channel, the first transverse flow channel and the second vertical flow channel is accelerated, the possibility of accumulation of pollutants on the inner wall of the flow channel can be reduced, and the false alarm rate of the turbidity sensor in the measurement process is reduced.

Preferably, the inflow end of the first transverse flow channel is provided with a scattering light cone, the cone tip of the scattering light cone faces the outflow end of the first transverse flow channel, the outflow end of the first transverse flow channel is provided with a reflecting sheet, the reflecting sheet is obliquely arranged, and the reflecting sheet can reflect light rays emitted by the light source to the surface of the scattering light cone and scatter the light rays on the surface of the scattering light cone.

Preferably, a water inlet pipe is arranged at the water inlet, and a water outlet pipe is arranged at the outflow end of the second vertical flow passage. So that the water sample to be measured can be conveniently connected with the container.

Preferably, a light shielding plate is arranged above the detection window. Therefore, light emitted by the light source can be prevented from directly penetrating through the detection window, and further measurement errors are caused.

Preferably, the turbidity sensor further comprises a circuit board, the circuit board is used for collecting electric signals transmitted by the photosensitive receiver and processing data, a signal wire is further arranged on the equipment cavity, one end of the signal wire, which is located inside the equipment cavity, is used for being electrically connected with the turbidity sensor, and one end of the signal wire, which is located outside the equipment cavity, is used for being electrically connected with a processing terminal.

The scattered light scattered by suspended matters in the water sample to be detected can reach a photosensitive receiver through a detection window, and the photosensitive receiver can sense an optical signal and convert the optical signal into an electric signal and then transmit the electric signal to a circuit board; one end of the signal wire, which is positioned outside the equipment cavity, can transmit the data measured by the turbidity sensor to the processing terminal for further display, storage or processing.

The technical scheme of the utility model has the following beneficial effects: according to the water turbidity measuring device disclosed by the utility model, the opening is arranged at the position of the water outflow end of the detection cavity, which is not in the top end of the detection cavity, and the distance is reserved between the bottom of the opening and the emission window, so that after a water sample to be measured enters the flow channel, the water sample flows from the bottom of the detection cavity to the top of the detection cavity, and when the liquid level of the water sample to be measured reaches the bottom of the opening, the water sample overflows out of the detection cavity from the opening, so that the water sample to be measured is not contacted with the emission window, and the pollution substances attached to the emission window due to the contact with the water sample to be measured can be avoided, and the drift of a measurement signal is avoided.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings, in which:

FIG. 1 is a top view of the water turbidity measuring device according to the present utility model.

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.

Fig. 3 is an enlarged view of the structure of the region B in fig. 2.

FIG. 4 is an enlarged view showing a cross-sectional structure of the turbidity sensor according to the present utility model.

FIG. 5 is a schematic view of the flow direction of water and gas in the flow channel according to the present utility model.

FIG. 6 is a schematic view showing the light emitted from the light source of the present utility model traveling in the flow channel.

Reference numerals illustrate: 100. a flow cell; 101. a flow passage; 102. a water inlet pipe; 103. a water outlet pipe; 104. a reflection sheet; 105. a scattering light cone; 106. a blow-down pipe; 107. a blow-down valve; 108. an overflow pipe; 109. an exhaust hole; 110. a water pressing plate; 111. a water flow; 112. a gas flow; 200. an equipment chamber; 300. a turbidity sensor; 301. a housing; 302. a detection window; 303. a sensing end; 304. an emission window; 305. a light source; 306. a circuit board; 307. a signal line; 308. and (3) an optical path.

Detailed Description

For a better understanding of the objects, structures and functions of the present utility model, a water turbidity measuring device according to the present utility model will be described in further detail with reference to the accompanying drawings.

The utility model can be applied to turbidity measurement of a water sample to be measured, and the vertical and the horizontal directions refer to the vertical and the horizontal directions of the placement position of the water turbidity measurement device in a normal working state, namely, the flow cell is positioned below the vertical direction of the equipment cavity.

According to the technical scheme, the problems that in the traditional water turbidity measuring device, the light source window is directly contacted with the water sample to be measured, suspended matters in the water sample to be measured are easy to attach to the light source window, light emitted by the light source is blocked, the light received and scattered by the suspended matters in the water sample to be measured is weakened, and then the measuring result is greatly deviated, so that the measuring result is inaccurate are solved.

Referring to fig. 1, 2 and 4, based on the above-mentioned technical problems, the present solution discloses a water turbidity measurement device, which is used for performing turbidity measurement on a water sample to be measured, and comprises a detachably connected flow cell 100 and a device cavity 200, wherein a turbidity sensor 300 is disposed in the device cavity 200, a flow channel 101 is disposed in the flow cell 100, a sensing end 303 of the turbidity sensor 300 extends into the flow channel 101, the sensing end 303 comprises a detection window 302, and a photosensitive receiver is disposed in the detection window 302; the turbidity sensor 300 further comprises a circuit board 306, the circuit board 306 is used for collecting the electric signals transmitted by the photosensitive receiver and processing the data, the equipment cavity 200 is further provided with a signal wire 307, one end of the signal wire 307 located inside the equipment cavity 200 is used for being electrically connected with the turbidity sensor 300, and one end of the signal wire 307 located outside the equipment cavity 200 is used for being electrically connected with a processing terminal.

The flow channel 101 comprises a detection cavity, the detection cavity extends vertically upwards along the water flow direction, the sensing end 303 is positioned at one side in the detection cavity, the detection window 302 faces the other side in the detection cavity, and the water sample to be detected can flow from the bottom of the detection cavity to the top of the detection cavity at the other side of the detection cavity; the turbidity sensor 300 further comprises an emission window 304, the emission window 304 is located at the top of the detection cavity, a light source 305 is disposed in the emission window 304, the light source 305 faces to the bottom of the detection cavity, specifically, the emission window 304 can be used for light transmission and also for waterproof of the light source 305; an opening is arranged on the side wall of the detection cavity opposite to the detection window 302, and a distance is arranged between the bottom of the opening and the emission window 304.

Specifically, referring to fig. 2, a water inlet pipe 102 is installed at the water inlet, and a water outlet pipe 103 is installed at the outflow end of the second vertical flow channel. So that the water sample to be measured can be conveniently connected with the container.

As a preferable solution of the detection window 302, a light shielding plate is disposed above the detection window 302. This prevents light emitted from the light source 305 from directly passing through the detection window 302, thereby causing measurement errors.

Specifically, referring to fig. 4, the turbidity sensor 300 includes a housing 301, the emission window 304 and the detection window 302 are both disposed on the housing 301, and the emission window 304 and the detection window 302 are made of quartz glass or acrylic material.

The working principle of the scheme is as follows: after the water sample to be detected enters the flow channel 101, the water sample flows from the bottom of the detection cavity to the top of the detection cavity, and when the liquid level of the water sample to be detected reaches the bottom of the opening, the water sample overflows from the opening to the second vertical flow channel, so that the water sample to be detected is not contacted with the emission window 304, the emission window 304 can be prevented from being attached with pollutant due to the contact with the water sample to be detected, and accordingly measurement signal drift is avoided.

The detection principle of the scheme is as follows: the scattered light scattered by suspended matters in the water sample to be detected can reach a photosensitive receiver through the detection window 302, and the photosensitive receiver can sense an optical signal and convert the optical signal into an electrical signal, and then the electrical signal is transmitted to the circuit board 306; the signal line 307 is located at an end outside the device chamber 200 and is capable of transmitting the data measured by the turbidity sensor 300 to a processing terminal for further display, storage or processing.

The water turbidity measuring device disclosed by the scheme has the following technical effects: the utility model discloses a water turbidity measuring device is provided with the opening in the water outflow end of detection chamber and the position department that does not detect the chamber top, has the distance between opening bottom and the emission window 304, then the water sample that awaits measuring gets into in the runner 101, flow towards the detection chamber top from detection chamber bottom in detecting the intracavity, when the water sample liquid level that awaits measuring arrives the opening bottom, overflow out from the opening part promptly and detect in the chamber to the vertical runner of second, can make the water sample that awaits measuring and emission window 304 contactless like this, can avoid emission window 304 to adhere to the pollutant owing to contact the water sample that awaits measuring to avoid causing measurement signal drift.

In order to further optimize the structure of the present utility model, the present utility model discloses the following preferred embodiments.

Example 1

On the basis of the above scheme, the scheme of the embodiment further improves the structure of the flow channel 101, and can further solve the technical problems that the turbidity measuring device is large in volume, the equipment is difficult to miniaturize, and the system integration is inconvenient.

Referring to fig. 2, the flow channel 101 further includes a first vertical flow channel, the first vertical flow channel extends vertically downward along the water flow direction, an outflow end of the first vertical flow channel is communicated with a first transverse flow channel, an outflow end of the first transverse flow channel is communicated with an inflow end of the detection cavity, the opening is communicated with a second vertical flow channel, and the second vertical flow channel extends vertically downward along the water flow direction.

The flow channel 101 is integrally formed into a bent structure similar to a U-shaped structure, so that the whole body of the flow cell 100 is reduced, the whole volume of the turbidity measuring device is further reduced, the structure is very compact, equipment is miniaturized easily, and the system integration is facilitated.

Example two

On the basis of the above-mentioned scheme, the scheme of this embodiment further improves the structure of the first vertical flow channel, and can further solve the technical problem that in the prior art, no related gas-liquid split structure is available, so that bubbles are easy to flow into the subsequent flow channel 101 along with water flow, and interference is generated to measurement.

Referring to fig. 2 and 3, two ends of the flow channel 101 are provided with a water inlet and a water outlet, the water inlet is communicated with the first vertical flow channel, a vertical upward extending section is arranged at a position higher than the water inlet of the first vertical flow channel, an exhaust hole 109 is arranged at the extending end of the extending section, and a water pressure plate 110 is covered above the exhaust hole 109.

Referring to fig. 5, fig. 5 is a schematic diagram of the water and gas flowing directions in the flow channel 101, the water flow 111 enters the first vertical flow channel from the water inlet pipe 102, passes through the first transverse flow channel, the detection chamber and the second vertical flow channel in sequence, and then flows out from the water outlet pipe 103, and then the air flow 112 is discharged from the air outlet hole 109 in the first vertical flow channel.

The air vent 109 is used for smoothly discharging air bubbles in the water sample to be tested, which flows in from the water inlet, so that the air bubbles are prevented from flowing into the subsequent flow channel 101 along with the water flow, the measurement is disturbed, and the water pressure plate 110 is used for preventing the water sample to be tested in the first vertical flow channel from leaking out of the air vent 109; the structure is beneficial to the floating of bubbles, so that gas and liquid are separated, and the interference of the bubbles on measurement is reduced.

Example III

On the basis of the above-mentioned scheme, the scheme of this embodiment further improves the width of each part forming the flow channel 101, and can further solve the technical problems that in the prior art, in order to reduce the reflection interference measurement of the light source 305, the volume design of the flow cell 100 is larger, and then the update of the water sample is slow, so that the sensor responds to the change of the water sample to be measured slowly, in addition, the flow channel 101 of the flow cell 100 is scientifically designed, the pollutants are easily accumulated, and the false alarm is generated in the measurement of the sensor.

Referring to fig. 2 and 5, the inner peripheral dimensions of the detection chamber are larger than the inner peripheral dimensions of the first vertical flow channel, the first transverse flow channel and the second vertical flow channel.

Referring to fig. 5, the water flow 111 enters the first vertical flow channel from the water inlet pipe 102, and sequentially passes through the first transverse flow channel, the detection chamber and the second vertical flow channel, and then flows out from the water outlet pipe 103, so that the air flow 112 is discharged from the air outlet hole 109 in the first vertical flow channel. Thus, the liquid to be measured flows into the first vertical flow channel and the first transverse flow channel, the inner peripheral dimensions of the first vertical flow channel and the first transverse flow channel are narrower, so that the water sample to be measured flows in the flow channel 101 faster, after entering the detection cavity, the inner peripheral dimensions of the detection cavity are larger than those of the first vertical flow channel and the first transverse flow channel, the flow speed of the water sample to be measured is slowed down, the measurement of the turbidity sensor 300 is facilitated, the accuracy of the measurement result is ensured, then the water sample to be measured flows into the second vertical flow channel, and after the inner peripheral dimensions of the second vertical flow channel are smaller than those of the detection cavity, the flow speed is accelerated, the water sample to be measured can be discharged out of the flow cell 100 more quickly, and the inlet and outlet flow speeds are set fast, so that the water sample to be measured can be updated timely, and the turbidity sensor 300 can respond to the turbidity change condition of the water sample to be measured timely;

in addition, the inner peripheral dimensions of the detection cavity are larger than those of the first vertical flow channel, the first transverse flow channel and the second vertical flow channel, so that the flow velocity of the water sample to be detected in the first vertical flow channel, the first transverse flow channel and the second vertical flow channel is accelerated, the possibility of accumulation of pollutants on the inner wall of the flow channel 101 can be reduced, and the false alarm rate of the turbidity sensor 300 in the measurement process is reduced.

This scheme can make the rivers speed in detection chamber accelerate, can make the water sample that awaits measuring update rate accelerate for sensor corresponding speed accelerates, can also make the pollutant discharge along with rivers more easily, reduces the sensor false alarm.

Example IV

Based on the above-mentioned scheme, the scheme of this embodiment further improves the processing structure of the redundant light emitted by the light source 305, and can further solve the technical problem that the redundant light emitted by the light source 305 is reflected by the inner wall of the flow channel 101 again to the detection window 302 to interfere with the photosensitive receiver, so that the measurement result is inaccurate.

Referring to fig. 2 and 6, the inflow end of the first transverse flow channel is provided with a scattering light cone 105, the cone tip of the scattering light cone 105 faces the outflow end of the first transverse flow channel, the outflow end of the first transverse flow channel is provided with a reflecting sheet 104, the reflecting sheet 104 is obliquely arranged, and the reflecting sheet 104 can reflect the light emitted by the light source 305 to the surface of the scattering light cone 105 and generate scattering on the surface of the scattering light cone 105.

Referring to fig. 6, fig. 6 is a schematic diagram of light emitted from the light source 305 in the flow channel 101, the light path 308 is scattered by suspended matters in the water sample to be measured after being emitted from the light source 305, and the excessive unscattered light is reflected by the reflecting sheet 104 to the scattering light cone 105 for scattering, so as to prevent the excessive light from being reflected by the inner wall of the flow channel 101 again to the detection window 302 to interfere with the photosensitive receiver, thereby making the measurement result inaccurate.

In addition, the scattering light cone 105 and the reflecting sheet 104 are both located inside the flow channel 101, so that a part of the volume of the flow channel 101 is occupied, the volume phase of the flow channel 101 is reduced, and the waterway is further shortened, so that the speed of the sensor responding to the change of the water sample can be further increased.

In summary, the technical solution adopted in the fourth embodiment can solve the following technical problems at the same time:

1. The light source window is directly contacted with the water sample to be measured in the traditional water turbidity measuring device, suspended matters in the water sample to be measured are easy to attach to the light source window, light emitted by the light source is blocked, the light received and scattered by the suspended matters in the water sample to be measured is weakened, and further the measuring result is greatly deviated, so that the measuring result is inaccurate.

2. The technical problems that the turbidity measuring device is large in size, equipment is difficult to miniaturize and system integration is inconvenient are solved.

3. The technical problems that in the prior art, no related gas-liquid split structure exists, bubbles are easy to flow into a subsequent flow channel along with water flow, and interference is generated to measurement are solved.

4. The flow-through cell has the advantages that the flow-through cell is designed to be large in size so as to reduce light source reflection interference measurement in the prior art, water samples are updated slowly, the sensor responds to the water sample to be measured slowly, the flow-through cell is not scientific in flow channel design, pollutants are easy to accumulate, and the sensor measures to produce false alarm.

5. The technical problem that the excessive light emitted by the light source is reflected to the detection window again by the inner wall of the flow channel to interfere the photosensitive receiver is solved, and then the measurement result is inaccurate is solved.

The water turbidity measuring device disclosed by the technical scheme in the fourth embodiment has the following technical effects:

1. The water turbidity measuring device disclosed by the scheme is provided with the opening at the water outflow end of the detection cavity and the position department that does not reach the detection cavity top, has a distance between opening bottom and emission window 304, then after the water sample that awaits measuring gets into runner 101, flow towards the detection cavity top from the detection cavity bottom in the detection cavity, when the water sample liquid level that awaits measuring arrives the opening bottom, overflow out of the detection cavity from the opening part promptly, can make the water sample that awaits measuring and emission window 304 contactless like this, can avoid emission window 304 to adhere to the pollutant owing to contact the water sample that awaits measuring to avoid causing measurement signal drift.

2. The flow channel 101 is integrally formed into a bent structure similar to a U-shaped structure, so that the whole body of the flow cell 100 is reduced, the whole volume of the turbidity measuring device is further reduced, the structure is very compact, equipment is miniaturized easily, and the system integration is facilitated.

3. The exhaust hole 109 of this scheme design is arranged in the bubble in the water sample that awaits measuring of water inlet inflow and discharges smoothly, prevents that the bubble from flowing into in the follow-up flow path 101 along with the rivers, produces the interference to the measurement, the pressure water board 110 is arranged in preventing that the water sample that awaits measuring in the first vertical flow path from spilling from exhaust hole 109, and this scheme is favorable to the bubble come-up, makes gas-liquid separation, reduces the interference of bubble to the measurement.

4. This scheme can make the rivers speed in detection chamber accelerate, can make the water sample that awaits measuring update rate accelerate for sensor corresponding speed accelerates, can also make the pollutant discharge along with rivers more easily, reduces the sensor false alarm.

5. In this scheme, the scattered light cone 105 and the reflecting sheet 104 can scatter the excessive unscattered light, prevent the excessive light from being reflected by the inner wall of the flow channel 101 again to the detection window 302 to interfere with the photosensitive receiver, and improve the accuracy of the measurement result; in addition, the scattering light cone 105 and the reflecting sheet 104 are both located inside the flow channel 101, so that a part of the volume of the flow channel 101 is occupied, the volume phase of the flow channel 101 is reduced, and the waterway is further shortened, so that the speed of the sensor responding to the change of the water sample can be further increased.

It will be understood that the utility model has been described in terms of specific embodiments/examples, and that various changes in and equivalents to these features and embodiments/examples may be made by those skilled in the art without departing from the spirit and scope of the utility model. Modifications to these features and embodiments/examples may be made within the teachings of the present utility model to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. The embodiments/examples described herein are some, but not all embodiments/examples of the utility model. The components of the embodiments/embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of specific embodiments/examples of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected specific embodiments/examples of the utility model. Therefore, it is intended that the utility model not be limited to the particular embodiments/examples disclosed herein, but that the particular embodiments/examples disclosed herein will include all other embodiments/examples disclosed herein as would be apparent to one skilled in the art without the benefit of this disclosure.

Claims (8)

1. The device is characterized by comprising a flow cell and an equipment cavity which are detachably connected, wherein a turbidity sensor is arranged in the equipment cavity, a flow channel is arranged in the flow cell, a sensing end of the turbidity sensor stretches into the flow channel, the sensing end comprises a detection window, and a photosensitive receiver is arranged in the detection window;

The flow channel comprises a detection cavity, the detection cavity extends vertically upwards along the water flow direction, the sensing end is positioned at one side in the detection cavity, the detection window faces the other side in the detection cavity, and the water sample to be detected can flow from the bottom of the detection cavity to the top of the detection cavity at the other side of the detection cavity;

The turbidity sensor further comprises an emission window, wherein the emission window is positioned at the top of the detection cavity, a light source is arranged in the emission window, and the light source faces the bottom of the detection cavity;

An opening is formed in the side wall of the detection cavity on the opposite side of the detection window, and a distance is reserved between the bottom of the opening and the emission window.

2. The water turbidity measurement device of claim 1, wherein the flow passage further comprises a first vertical flow passage extending vertically downward in the water flow direction, wherein the outflow end of the first vertical flow passage is communicated with a first transverse flow passage, the outflow end of the first transverse flow passage is communicated with the inflow end of the detection chamber, the opening is communicated with a second vertical flow passage extending vertically downward in the water flow direction.

3. The water turbidity measurement device according to claim 2, wherein a water inlet and a water outlet are arranged at two ends of the runner, the water inlet is communicated with the first vertical runner, a vertical upward extension section is arranged at a position higher than the water inlet of the first vertical runner, an exhaust hole is arranged at the extension tail end of the extension section, and a water pressing plate is covered above the exhaust hole.

4. The water turbidity measurement device of claim 3, wherein the detection chamber has an inner peripheral dimension that is greater than the inner peripheral dimensions of the first vertical flow passage, the first lateral flow passage, and the second vertical flow passage.

5. The device according to claim 3 or 4, wherein the inflow end of the first transverse flow channel is provided with a scattering light cone, the cone tip of the scattering light cone faces the outflow end of the first transverse flow channel, the outflow end of the first transverse flow channel is provided with a reflecting sheet, the reflecting sheet is obliquely arranged, and the reflecting sheet can reflect light emitted by the light source to the surface of the scattering light cone and generate scattering on the surface of the scattering light cone.

6. The water turbidity measurement device according to claim 5, wherein a water inlet pipe is installed at the water inlet, and a water outlet pipe is installed at the outflow end of the second vertical flow passage.

7. The water turbidity measurement device of claim 6, wherein a light shield is disposed above the detection window.

8. The device of claim 7, wherein the turbidity sensor further comprises a circuit board, the circuit board is used for collecting the electric signals transmitted by the photosensitive receiver and processing the data, a signal wire is further arranged on the equipment cavity, one end of the signal wire, which is positioned inside the equipment cavity, is used for being electrically connected with the turbidity sensor, and one end of the signal wire, which is positioned outside the equipment cavity, is used for being electrically connected with a processing terminal.