CN220626203U

CN220626203U - Water turbidity detection device

Info

Publication number: CN220626203U
Application number: CN202321996888.XU
Authority: CN
Inventors: 范向军; 杨霞; 黄宇波; 吴晓; 林雨霁; 陈阳光; 卢露; 陈秀锋; 辛小康; 李建; 查悉妮
Original assignee: China Three Gorges Corp
Current assignee: China Three Gorges Corp
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-03-19
Anticipated expiration: 2033-07-27

Abstract

The utility model discloses a water turbidity detection device, which relates to the field of water turbidity measurement, and comprises a shell, a suction assembly and a photoelectric detection assembly, wherein a piston cavity is arranged in the shell, and an opening for water to enter and exit is formed in the end part of the piston cavity; the suction assembly comprises a driving assembly and a piston, the piston is arranged in the piston cavity, and the driving assembly is connected with the piston and is used for driving the piston to move in the piston cavity so as to suck or discharge water from the opening and clean the inner wall of the piston cavity; the photoelectric detection component is used for detecting the turbidity of the water body in the piston cavity. Through the piston, not only can suck the water to the piston intracavity and detect the water turbidity through photoelectric detection subassembly, can also utilize the piston to clean the inner wall in piston chamber simultaneously to get rid of shells inner wall's adhesion dirt, improve the precision that detects, and need not to set up cleaning equipment in addition or set up clean flow alone, be favorable to the miniaturization of instrument and the simplification of flow.

Description

Water turbidity detection device

Technical Field

The utility model relates to the field of water turbidity measurement, in particular to a water turbidity detection device.

Background

Turbidity is the degree of turbidity of water and is expressed as the degree of obstruction that occurs when suspended matter in water passes through light. The water contains suspended substances and colloid substances such as soil, dust, fine organic matters, zooplankton, other microorganisms and the like, so that the water can be turbidity. The turbidity of a water body is the degree of obstruction caused by suspended matters, colloid substances and microbial impurities with different sizes, specific gravities and shapes in the water when light passes through. The size of turbidity is related not only to the particulate matter in the body of water, but also to its particle size, shape and surface area. The liquid turbidity measurement has wide application in water supply, brewing, pharmacy, environmental protection, sanitation and epidemic prevention and other industries and departments. In the aspect of water quality monitoring, turbidity is an important parameter for representing water quality, and is also one of important parameters for evaluating the quality of factory water. The measurement of turbidity has important effect and significance in the aspect of controlling the turbidity of industrial water and drinking water in daily life.

At present, the detection method of the turbidity of the water quality mainly comprises the following two modes: 1. according to the turbidity detection method of the compound water purifying agent based on the chemical reagent, the compound water purifying agent is put into a water body to be detected to pretreat raw water impurities, so that flocculation is formed, and the detection purpose is achieved. However, the method has the problem of secondary pollution caused by chemical reagents, and the accuracy is reduced in a high-temperature environment. 2. The method uses current to condense particles in water into floccules, and the detection and treatment of water turbidity are carried out on the basis of the floccules. The method avoids secondary pollution of chemical drugs to the environment, but needs to check the turbidity detection device regularly, and has high requirements on electric power guarantee.

Along with the development of optical technology, optical methods applied to water turbidity detection are more and more, the optical methods avoid pollution of chemical reagents to water bodies, and the requirements on electric power guarantee are also reduced. The current common optical methods comprise a visual turbidimetry method, a transmitted light method, a scattered light method and an integrating sphere method (scattering and transmitting methods), and the visual turbidimetry method has poor accuracy and is only suitable for roughly judging the turbidity of the water body; the difference between the transmitted light method and the scattered light method is mainly that the angle of the photodetectors with respect to the incident light is different and the number of photodetectors is different. However, in continuous on-line monitoring of water, the measuring window is easily deposited and attached by impurities in the water, so that the detection accuracy is affected, the monitoring equipment is required to be shut down in the current operation, and the measuring window is cleaned manually, so that the operation is troublesome.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a water turbidity detection device so as to solve the problem that sediment in a measurement window is troublesome to clean when the measurement is carried out by an optical method in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the application provides a water turbidity detection device, include:

a shell, wherein a piston cavity is arranged in the shell, and an opening for water to enter and exit is arranged at the end part of the piston cavity;

the suction assembly comprises a driving assembly and a piston, the piston is arranged in the piston cavity, the driving assembly is connected with the piston and used for driving the piston to move in the piston cavity so as to suck or discharge water from the opening and clean the inner wall of the piston cavity;

and the photoelectric detection assembly is used for detecting the turbidity of the water body in the piston cavity.

In some alternative embodiments, the piston includes a piston body and a sealing ring, at least one accommodation groove is circumferentially formed on the piston body, and the sealing ring is disposed in the accommodation groove and abuts against an inner wall of the piston cavity.

In some alternative embodiments, the driving assembly includes a piston rod and a driving member, the driving member is disposed on a side of the housing away from the opening, one end of the piston rod is connected to an output end of the driving member, and the other end is connected to the piston.

In some alternative embodiments, the photodetection assembly includes a light emitting component and a light receiving component disposed outside the piston cavity, respectively.

In some alternative embodiments, a first light-transmitting window and a second light-transmitting window are respectively arranged on two radial sides of the piston cavity, the emission port of the light emitting component is aligned with the first light-transmitting window, and the receiving port of the light receiving component is aligned with the second light-transmitting window.

In some alternative embodiments, the piston chamber housing is provided with a housing body, and the light emitting member and the light receiving member are both fixed to the housing body.

In some alternative embodiments, the cover is provided with a quick connector that communicates with the opening.

In some alternative embodiments, a cavity is formed between the housing and the cover, and a sealing plug is filled in the cavity.

In some alternative embodiments, the device further comprises a multi-way selection valve, wherein one water inlet of the multi-way selection valve is communicated with the water body pool through a pipeline, the other water inlet is communicated with the standard sample pool through a pipeline, and the water outlet of the multi-way selection valve is communicated with the opening through a pipeline.

In some alternative embodiments, the drive assembly is removably coupled to the piston.

Compared with the prior art, the utility model has the advantages that: through the piston of suction subassembly, not only can suck the water to the piston intracavity and detect the water turbidity through photoelectric detection subassembly, can also utilize the piston to clean the inner wall in piston chamber simultaneously to get rid of shells inner wall's adhesion dirt, improve the precision that detects, and need not to set up cleaning equipment in addition or set up cleaning flow alone, be favorable to the miniaturization of instrument and the smart simplification of flow.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a device for detecting turbidity of a water body according to the present utility model;

FIG. 2 is a schematic diagram of a checking state of a water turbidity detecting device according to the present utility model.

In the figure: 1. a housing; 10. a piston chamber; 11. an opening; 12. a cover body; 13. a quick-connect joint; 14. a sealing plug; 2. a suction assembly; 21. a drive assembly; 211. a piston rod; 212. a driving member; 22. a piston; 221. a seal ring; 222. a piston body; 31. a light emitting member; 32. a light receiving member; 4. a multiple-way selection valve; 5. a water body pool; 6. standard sample cell.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

An embodiment of a water turbidity detecting device according to the present utility model is described in further detail below with reference to the accompanying drawings.

As shown in fig. 1, the application provides a water turbidity detection device, which comprises a shell 1, a suction assembly 2 and a photoelectric detection assembly. The suction assembly 2 is used for sucking the water body to be detected into the shell 1 and detecting the turbidity of the water body through the photoelectric detection assembly.

Specifically, a piston cavity 10 is arranged in the shell 1, and an opening 11 for water to enter and exit is arranged at the end part of the piston cavity 10; the suction assembly 2 comprises a driving assembly 21 and a piston 22, wherein the piston 22 is arranged in the piston cavity 10, and the driving assembly 21 is connected with the piston 22 and is used for driving the piston 22 to move in the piston cavity 10 so as to suck or discharge water from the opening 11 and clean the inner wall of the piston cavity 10; the photoelectric detection assembly is used for detecting the turbidity of the water body in the piston cavity 10.

It will be appreciated that the piston 22 is sized to fit within the piston chamber 10 such that water is drawn into the piston chamber 10 or drained from the piston chamber 10 by movement of the piston 22 within the piston chamber 10. As the piston 22 moves within the piston chamber 10, the piston 22 engages and rubs against the inner wall of the piston chamber 10, thereby cleaning the inner wall of the piston chamber 10.

By utilizing the piston 22 to move in the piston cavity 10, not only the water draining body can be drained, but also the inner wall of the piston cavity 10 can be cleaned, so that cleaning equipment is not required to be additionally arranged or a cleaning process is not required to be independently arranged, the miniaturization of an instrument and the simplification of the process are facilitated, and the testing time is greatly saved.

In addition, the basis for judging whether the inner wall surface of the piston chamber 10 is clean is as follows: introducing pure water into the piston cavity 10, detecting the turbidity of the pure water, and indicating that the piston cavity 10 is cleaned when the detected turbidity value is at a preset value; when the turbidity value exceeds the preset value, the piston chamber 10 is not cleaned, and the step of discharging the liquid in the piston chamber 10 is repeated, so that the piston chamber 10 is cleaned.

In some alternative embodiments, the piston 22 includes a piston body 222 and a sealing ring 221, at least one receiving groove is circumferentially formed on the piston body 222, and the sealing ring 221 is disposed in the receiving groove and abuts against the inner wall of the piston cavity 10.

In order to ensure a better adhesion of the piston 22 to the inner wall of the piston chamber 10, a seal ring 221 is provided on the piston body 222. The seal ring 221 is clamped on the piston body 222, protrudes in the radial direction, and abuts against the inner wall of the piston cavity 10. In this example, two sealing rings 221 are provided, and are made of silica gel, so that when the sealing rings 221 are abutted against the inner wall of the piston cavity 10, the sealing rings 221 elastically deform, the contact area between the sealing rings and the inner wall of the piston cavity 10 is increased, and the sealing effect is enhanced.

In other embodiments, the piston body 222 and the sealing ring 221 may be formed integrally, and are made of silica gel or other material with a certain elastic deformation, which is not described herein.

In some alternative embodiments, the driving assembly 21 includes a piston rod 211 and a driving member 212, the driving member 212 is disposed on a side of the housing 1 away from the opening 11, one end of the piston rod 211 is connected to an output end of the driving member 212, and the other end is connected to the piston 22.

It will be appreciated that the output end of the driver 212 extends or shortens, driving the piston rod 211 in motion, thereby moving the piston 22 within the piston chamber 10 to pump water. Here, the movement path of the piston rod 211 is along the axial direction of the piston chamber 10, and the driver 212 is also fixed in the housing 1.

It should be noted that, when detecting turbidity of the water body, the driving member 212 drives the piston rod 211 to move along the axial movement path of the piston cavity 10, which is determined according to the volume of the water body to be detected, and the water body needs to completely exceed the detection range of the photoelectric detection assembly. If cleaning of the inner wall of the piston chamber 10 is required exclusively, the path along which the driving member 212 drives the piston rod 211 is determined according to the range of the inner wall to be cleaned.

In some alternative embodiments, the photodetection assembly includes a light emitting component 31 and a light receiving component 32 respectively disposed outside the piston chamber 10.

It will be appreciated that the detection means employed in this example is optical and is based on the property of light that propagates through water and is scattered by interaction with the suspension. The phenomenon of light scattering is used for measuring the concentration of particles in water and converting the concentration of particles into a turbidity value so as to reflect the clarity degree of the water body. Thus, the light emitting part 31 emits a light beam, irradiates in a water body, and the light propagates in the water body and is then received by the light receiving part 32.

In some alternative embodiments, the two radial sides of the piston chamber 10 are respectively provided with a first light-transmitting window and a second light-transmitting window. The light emitting opening of the light emitting member 31 is aligned with the first light transmitting window, and the receiving opening of the light receiving member 32 is aligned with the second light transmitting window.

In this example, a transmitted light method is used, and a beam of light is used to pass through a water sample to be measured with a certain thickness and the absorption and scattering degree of suspended particles in the water sample to be measured on the incident light is measured. In this method, light is emitted and received at both ends of the same straight line, and thus, a first light-transmitting window and a second light-transmitting window are provided at both sides in the radial direction of the piston chamber 10, and the emitted light of the light-emitting member 31 enters the piston chamber 10 from the first light-transmitting window, and the light-receiving member 32 receives the light emitted from the second light-transmitting window. Of course, it is also possible to use a light-transmitting material piece for the piston chamber 10 section of the housing 1, and then to dispose the light emitting member 31 and the light receiving member 32 on both sides in the radial direction, respectively.

In other embodiments, if the scattered light method is adopted, the emitted light of the light emitting part 31 and the scattered light received by the light receiving part 32 are perpendicular. At this time, the planes of the first light-transmitting window and the second light-transmitting window are mutually perpendicular.

In some alternative embodiments, the housing of the piston chamber 10 is provided with a housing 12, and the light emitting member 31 and the light receiving member 32 are fixed to the housing 12.

It will be appreciated that the housing 12 is used to secure the light emitting member 31 and the light receiving member 32 such that the emitting port of the light emitting member 31 is aligned with the first light transmitting window and the receiving port of the light receiving member 32 is aligned with the second light transmitting window. Meanwhile, the cover body 12 is arranged outside the piston cavity 10, so that the interference of external light on the detection of water in the piston cavity 10 can be isolated, and the cover body 12 can be provided with a through hole through which the emitting port of the light emitting component 31 and the receiving port of the light receiving component 32 pass.

Alternatively, the light emitting member 31 and the light receiving member 32 are fixed to the housing 12 by bolts.

In some alternative embodiments, the cover 12 is provided with a quick connector 13 that communicates with the opening 11.

It will be appreciated that a through hole is formed in the housing 12, and the quick connector 13 is connected to the opening 11 through the through hole, so that water outside the housing 12 is pumped into the piston chamber 10 through the quick connector.

Alternatively, the opening 11 may be provided as a liquid inlet for liquid and a liquid outlet for liquid, and quick connectors are respectively provided on the liquid inlet and the liquid outlet. The liquid inlet and the liquid outlet are separated, so that the influence of the liquid remained in the pipeline on the water body to be detected is reduced. When liquid is fed, the quick connector of the liquid outlet is closed, and when liquid is discharged, the quick connector of the liquid inlet is closed.

In some alternative embodiments, the water turbidity detecting device further comprises a multi-way selection valve 4, wherein one water inlet of the multi-way selection valve 4 is used for being communicated with the water tank 5 through a pipeline, the other water inlet is used for being communicated with the standard sample tank 6 through a pipeline, and the water outlet of the multi-way selection valve 4 is communicated with the opening 11 through a pipeline.

In this example, as shown in fig. 2, when the device is used for detecting the turbidity of the water body, the water body to be detected and a standard sample are prepared, whether the performance index of the turbidity detection device is qualified or not is checked through the standard sample, and then the water body to be detected is detected. A multi-way selector valve can be used to control the entry of the test strip or standard sample into the piston chamber 10. Of course, in other embodiments, it is not limited to only a multiple-way selector valve. For example, when it is also necessary to wash the piston chamber 10, one valve port of the multiple-way selector valve may be communicated with the cleaning liquid tank, and when it is necessary to collect waste liquid, one valve port of the multiple-way selector valve may be communicated with the waste liquid tank. The arrangement of the multiple-way selection valve can be selected by a person skilled in the art according to the requirements of the use.

In some alternative embodiments, the space between the housing 1 and the cover 12 forms a cavity, and the cavity is filled with a sealing plug 14.

The sealing plug 14 is filled between the housing 1 and the cover 12, and on the one hand, the relative positions of the light emitting part 31 and the light receiving part 32 can be further fixed; in the second aspect, the gap of the through hole for the quick connector 13 to pass through can be sealed on the cover body 12, so that leakage into the cavity during drainage of the water body is avoided; in the third aspect, the sealing plug 14 can prevent outside scattered light from entering from the through hole in the cover body, interfering with the detection result.

In some alternative embodiments, the drive assembly 21 is removably coupled to the piston 22.

To facilitate replacement or cleaning of the piston 22, the drive assembly 21 is detachably connected to the piston 22.

The working principle of the embodiment of the application is as follows: the driving piece 212 is started, the piston 22 moves in a direction away from the opening 11, at this time, the valve port of the multi-way selection valve 4 is communicated with the water body pool, the water body to be detected in the water body pool is sucked into the piston cavity 10, until enough water body is sucked, the driving piece 212 stops working, the light emitted by the light emitting part 31 enters the piston cavity 10 from the first light transmission window, and the light receiving part 32 receives the light emitted from the second light transmission window. After the detection is completed, the driving member 212 is started to enable the piston 22 to move towards the direction close to the opening 11, at the moment, the valve port of the multi-way selection valve 4 is opened to discharge the water body, and the piston 22 scrubs the inner wall of the piston cavity 10 while discharging the water body.

According to the water turbidity detection device, the piston 22 is utilized to move in the piston cavity 10, so that not only can the water be pumped and discharged, but also the inner wall of the piston cavity 10 can be cleaned, thus no cleaning equipment or a cleaning process is required to be additionally arranged, the miniaturization of an instrument and the simplification of the process are facilitated, and the test time is greatly saved; the outer cover of the piston cavity 10 is provided with the cover body 12 so as to fix the light emitting part 31 and the light receiving part 32, and meanwhile, the interference of external light on the detection of water in the piston cavity 10 can be isolated; by arranging the multi-path selection valve, water body detection, standard sample detection, cleaning of the piston cavity 10 and the like can be completed in the piston cavity 10, the operation is simple and convenient, and the consistency of water sample detection and standard sample detection is ensured; a sealing plug 14 is filled in a cavity formed at an interval between the housing 1 and the cover 12; the relative positions of the light emitting part 31 and the light receiving part 32 can be further fixed, and the holes on the cover body can be sealed, so that external scattered light is prevented from entering from the through holes on the cover body, and the detection result is disturbed.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water turbidity detection device, comprising:

a shell (1) is internally provided with a piston cavity (10), and an opening (11) for water to enter and exit is arranged at the end part of the piston cavity (10);

the suction assembly (2) comprises a driving assembly (21) and a piston (22), wherein the piston (22) is arranged in the piston cavity (10), and the driving assembly (21) is connected with the piston (22) and is used for driving the piston (22) to move in the piston cavity (10) so as to suck or discharge water from the opening (11) and clean the inner wall of the piston cavity (10);

and the photoelectric detection assembly is used for detecting the turbidity of the water body in the piston cavity (10).

2. The water turbidity detection device according to claim 1, wherein the piston (22) comprises a piston body (222) and a sealing ring (221), at least one accommodating groove is circumferentially formed in the piston body (222), and the sealing ring (221) is arranged in the accommodating groove and is abutted against the inner wall of the piston cavity (10).

3. The device for detecting the turbidity of the water body according to claim 1, wherein the driving assembly (21) comprises a piston rod (211) and a driving piece (212), the driving piece (212) is arranged on one side of the shell (1) far away from the opening (11), one end of the piston rod (211) is connected with the output end of the driving piece (212), and the other end of the piston rod is connected with the piston (22).

4. The water turbidity detection apparatus according to claim 1, wherein the photoelectric detection assembly includes a light emitting member (31) and a light receiving member (32) respectively provided outside the piston chamber (10).

5. The water turbidity detection device according to claim 4, wherein a first light transmission window and a second light transmission window are respectively arranged on two radial sides of the piston cavity (10), an emission port of the light emitting component (31) is aligned with the first light transmission window, and a receiving port of the light receiving component (32) is aligned with the second light transmission window.

6. The water turbidity detection device according to claim 5, wherein the piston chamber (10) is provided with a housing (12), and the light emitting member (31) and the light receiving member (32) are both fixed to the housing (12).

7. The device for detecting the turbidity of the water body according to claim 6, wherein a quick connector (13) communicated with the opening (11) is arranged on the cover body (12).

8. The water turbidity detection device according to claim 6, wherein a cavity is formed between the housing (1) and the cover (12), and a sealing plug (14) is filled in the cavity.

9. The water turbidity detection device according to claim 1, further comprising a multi-way selection valve (4), wherein one water inlet of the multi-way selection valve (4) is communicated with a water tank through a pipeline, the other water inlet is communicated with a standard sample tank through a pipeline, and a water outlet of the multi-way selection valve (4) is communicated with the opening (11) through a pipeline.

10. The water turbidity detection device according to claim 1, wherein the drive assembly (21) is detachably connected to the piston (22).