CN215449151U

CN215449151U - Titration detection device and water supply system

Info

Publication number: CN215449151U
Application number: CN202122066544.6U
Authority: CN
Inventors: 刘世强; 潘承胜; 肖骏
Original assignee: AO Smith China Water Heater Co Ltd
Current assignee: AO Smith China Water Heater Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-01-07
Anticipated expiration: 2031-08-30
Also published as: CN215449151U9

Abstract

The utility model provides a titration detection device and a water supply system. The device comprises: the device comprises a pipeline and a first pump arranged on the pipeline; the pipeline comprises a first inlet port and a titration solution inlet; the first pump enables the substance to be detected and the titrant entering from the first inlet port and the titrant inlet to flow in the pipeline.

Description

Titration detection device and water supply system

Technical Field

The utility model relates to the field of titration detection, in particular to a titration detection device of a titration detection device and a water supply system.

Background

Titration detection is an important detection method in the field of chemistry. The content of the specified substance in the object to be detected is calculated according to the amount of the added titrant by adding the titrant with known concentration to the object to be detected until the added titrant and the object to be detected react quantitatively.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the utility model.

SUMMERY OF THE UTILITY MODEL

The inventors have found that in the conventional titration test apparatus, a reaction vessel for reacting an analyte with a titration solution is required, and a stirrer is provided at the bottom of the reaction vessel to mix the analyte with the titration solution. However, since the reaction cuvette is provided in the titration apparatus, a leakage phenomenon is likely to occur when the pressure inside the reaction cuvette is high; due to the existence of the reaction vessel, the volume of the titration detection device is generally large, and the titration detection device is not easy to miniaturize; in addition, there may be a case where the specimen and the titration liquid are stirred by a stirrer provided at the bottom of the reaction vessel and are not uniformly mixed.

In view of at least one of the above problems, embodiments of the present invention provide a titration detection apparatus and a water supply system, where the titration detection apparatus does not need to bear pressure, and the risk of liquid leakage is small; the volume is small, the structure is simple, the mixing effect of the object to be detected and the titration solution is good, and high-precision detection can be performed even if the content of specified substances in the object to be detected is small.

The specific technical scheme of the embodiment of the utility model is as follows:

according to a first aspect of embodiments of the present invention, there is provided a titration detection apparatus, the apparatus comprising:

the device comprises a pipeline and a first pump arranged on the pipeline;

the pipeline comprises a first inlet port and a titration solution inlet;

the first pump enables the substance to be detected and the titrant entering from the first inlet port and the titrant inlet to flow in the pipeline.

According to a second aspect of embodiments of the present invention, there is provided an apparatus as described in the first aspect, wherein the pipeline further comprises a mixer, and the mixer is provided with a flow disturbing structure.

According to a third aspect of embodiments of the present invention, there is provided an apparatus as described in the second aspect, wherein the flow perturbation structure comprises a meandering channel.

According to a fourth aspect of embodiments of the present invention, there is provided an apparatus as defined in the second aspect, wherein the titrant inlet is provided in the mixer, and the mixer has a second inlet port and a first outlet port, and the second inlet port and the first outlet port are respectively connected to the pipeline.

According to a fifth aspect of embodiments of the present invention, there is provided an apparatus as described in the second aspect, wherein the mixer has a second inlet port and a first outlet port, the second inlet port being located upstream of the titrant inlet port in the direction of flow of the fluid in the conduit.

According to a sixth aspect of the embodiments of the present invention, there is provided the apparatus as defined in the fourth aspect, wherein the number of the titrant inlets provided to the mixer is matched with the kind of the titrant.

According to a seventh aspect of the embodiments of the present invention, there is provided the apparatus as defined in the fourth or fifth aspect, wherein, along the flow direction of the fluid in the pipeline, the cross-sectional area of the end of the mixer near the first outlet is gradually reduced; alternatively, the cross-sectional area of the end of the mixer near the second inlet port tends to increase in the direction of flow of the fluid in the pipe.

According to an eighth aspect of embodiments of the present invention, there is provided an apparatus as described in the seventh aspect, wherein a rate of change of the cross-sectional area of an end of the mixer near the second inlet port is larger than a rate of change of the cross-sectional area of an end of the mixer near the first outlet port.

According to a ninth aspect of embodiments of the present invention, there is provided a device as described in any one of the first to sixth aspects, wherein the pipeline includes a light-transmitting section, and the light-transmitting section includes a light-transmitting portion integrally formed with the pipeline and/or a light-transmitting portion having both ends hermetically connected to the pipeline.

According to a tenth aspect of embodiments of the present invention, there is provided an apparatus as described in the ninth aspect, wherein the apparatus further comprises: and the sensor is arranged on the inner surface of the light-transmitting section or the shell of the titration detection device and is used for acquiring color related parameters of liquid flowing through the light-transmitting section.

According to an eleventh aspect of embodiments of the present invention, there is provided an apparatus as described in the tenth aspect, wherein the apparatus further comprises: and the controller is communicated with the sensor and is used for acquiring the color related parameters and judging a titration end point according to the color related parameters.

According to a twelfth aspect of the embodiments of the present invention, there is provided an apparatus as described in any one of the first to sixth aspects, wherein an object inlet pipe is provided upstream of the first inlet port, and a flow control device and/or a second pump is provided on the object inlet pipe; alternatively, a second pump is provided on the conduit.

According to a thirteenth aspect of embodiments of the present invention, there is provided a device as defined in any one of the first to sixth aspects, wherein the pipeline further includes a first discharge port, and the first discharge port is located higher than the first inlet port, or is located not lower than an inlet of the first pump.

According to a fourteenth aspect of embodiments of the present invention, there is provided an apparatus as described in any of the first to sixth aspects, wherein the first pump is a peristaltic pump.

According to a fifteenth aspect of the embodiments of the present invention, there is provided the apparatus as defined in any one of the first to sixth aspects, wherein the pipeline is a circulation pipeline, and the substance to be detected and the titration liquid flow in a mixed manner in the circulation pipeline.

According to a sixteenth aspect of embodiments of the present invention, there is provided a water supply system, wherein the water supply system comprises the titration detection apparatus according to any one of the first to fifteenth aspects.

According to a seventeenth aspect of embodiments of the present invention, there is provided a system as defined in the sixteenth aspect, wherein the water supply system comprises a water purification device and/or a hot water supply device.

According to an eighteenth aspect of embodiments of the present invention, there is provided the system as defined in the seventeenth aspect, wherein the first inlet port of the titration detection means is connected to a water outlet or inlet of the water supply system.

According to a nineteenth aspect of embodiments of the present invention, there is provided the system as defined in the seventeenth aspect, wherein the water supply system further comprises a water softening device, and the titration detection device is disposed between the water softening device and the water purification device, or the titration detection device is disposed between the water softening device and the hot water supply device.

The embodiment of the utility model has the beneficial effects that: the object to be detected entering from the first inlet port and the titration liquid entering from the titration liquid inlet port flow in the pipeline through the first pump, so that the object to be detected and the titration liquid can be mixed in the pipeline, and a special reaction vessel for reacting the object to be detected and the titration liquid is not required to be arranged, therefore, the titration detection device in the embodiment of the utility model does not need to bear pressure, and the leakage risk is small; the volume is small, the structure is simple, the mixing effect of the object to be detected and the titration solution is good, and high-precision detection can be performed even if the content of specified substances in the object to be detected is small.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not so limited in scope. The embodiments of the utility model include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the utility model as a matter of case.

FIG. 1 is a schematic view of a titration detection apparatus according to an embodiment of the present invention;

FIG. 2 is another schematic structural view of the titration outfit of the present invention;

FIG. 3 is a schematic diagram of a mixer according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of the mixer along section line AA' of FIG. 3;

FIG. 5 is another cross-sectional view of a mixer of an embodiment of the present invention;

FIG. 6 is a schematic view of a water supply system according to an embodiment of the present invention;

FIG. 7 is another schematic view of a water supply system according to an embodiment of the present invention.

Description of reference numerals:

301-controller, 302-line, 303-first pump, 304-mixer, 305-sensor, 306-inlet tube for analyte, 307-second pump, 308-first outlet, 309-display input device, 3021-first inlet port, 3022-inlet port for titrant, 3024-third pump, 3025-inlet tube for titrant, 3042-second inlet port, 3043-first outlet port.

Detailed Description

The technical solutions of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments, it should be understood that these embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and various equivalent modifications of the present invention by those skilled in the art after reading the present invention fall within the scope of the present invention defined by the appended claims.

In the embodiments of the present invention, the terms "first", "second", and the like are used for distinguishing different elements by name, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Embodiments of the first aspect

An embodiment of the first aspect of the present invention provides a titration detection apparatus, and fig. 1 is a schematic structural diagram of the titration detection apparatus according to the embodiment of the present invention.

As shown in fig. 1, the titration detection apparatus 300 includes: a pipeline 302 and a first pump 303 arranged in the pipeline 320.

Wherein the pipeline 302 may comprise a first inlet port 3021 and a titrant inlet port 3022, and the first pump 303 makes the substance to be detected and the titrant entering from the first inlet port 3021 and the titrant inlet port 3022 flow in the pipeline 302.

Through the embodiment, the substance to be detected entering from the first inlet port 3021 and the titration solution entering from the titration solution inlet port 3022 flow in the pipeline 302 through the first pump 303, so that the substance to be detected and the titration solution can be mixed in the pipeline 302, and a special reaction vessel for reacting the substance to be detected and the titration solution is not required to be arranged, so that the titration detection device 300 in the embodiment of the utility model does not need to bear pressure, and the leakage risk is small; the volume is small, the structure is simple, the mixing effect of the object to be detected and the titration solution is good, and high-precision detection can be performed even if the content of specified substances in the object to be detected is small.

In some embodiments, the titration test apparatus 300 may be configured to detect the amount of a particular substance in a variety of analytes, such as solids, liquids, gases, and the like. For example, the titration detection apparatus 300 may detect hardness of water, heavy metal content in a liquid, and the like.

In some embodiments, the titrating solution may comprise one or more, and in the case that there are a plurality of titrating solutions, each titrating solution may be added to the object to be detected in a prescribed order, and the prescribed order may be one or more; alternatively, the respective titrating solutions may be added to the analyte simultaneously, and the present invention is not particularly limited thereto.

For example, the titrated solution may include a first titrated solution, a second titrated solution and a third titrated solution, and the first titrated solution, the second titrated solution and the third titrated solution cooperate with the analyte to detect the concentration of the specified substance in the analyte. In some embodiments, the third titration solution may be added to the sample after the first titration solution and the second titration solution, and the order of adding the first titration solution and the second titration solution may be set arbitrarily, for example, the first titration solution is added before, or the second titration solution is added before, or both of them are added simultaneously, or the first titration solution, the second titration solution and the third titration solution may be added simultaneously, which is not limited in this application.

In some embodiments, the first titration liquid may be an environmental modifier, which may adjust an environmental parameter during the reaction, e.g., adjust ph, etc. The second titration liquid may be an indicator which may indicate the progress of the reaction process, e.g. by a colour change indicating the end of the titration, etc. The third titration solution may be a reagent that can react with a prescribed substance in the analyte to be detected.

For example, the substance to be detected may be water, the hardness of water may be detected in the titration detection process, and the first titration solution may include an ammonia buffer solution, which may counteract or mitigate the influence of an additional strong acid or strong base on the pH of the substance to be detected to some extent, so as to keep the pH of the substance to be detected relatively stable; the second titration solution may comprise a chrome black T solution which is red or blue in color after being dissolved in water, the specific color being related to the pH value of the aqueous solution; the third titration solution may include an EDTA (ethylenediaminetetraacetic acid) solution, which may be combined with divalent metal ions such as Mg2+, Ca2+, Mn2+, Fe2 +. This makes it possible to detect the hardness of water.

In some embodiments, the first pump 303 can be any pump capable of flowing the analyte and the titration solution in the line 302. In other embodiments, the first pump 303 not only enables the analyte and the titrant to flow in the pipeline 302, but also enables the analyte to enter the pipeline 302 from the first inlet port 3021. For example, the first pump 303 may be a peristaltic pump. The peristaltic pump can alternatively press and release the pipeline 302 to make the substance to be detected and the titration solution in the pipeline 302 flow, so that the substance to be detected and the titration solution in the pipeline 302 can be mixed more fully. Also, the peristaltic pump may create a negative pressure in the line 302, thereby enabling the substance to be detected to enter the line 302 and to fluidically mix the substance to be detected and the titrant entering the line 302.

In some embodiments, the line 302 can be any of a variety of lines that allow the flow of the analyte and the titrant. For example, it may be a tube (the diameter of which is less than a threshold value) capable of forming a capillary phenomenon. Thus, when the pipe 302 is in contact with the object to be detected in a liquid state, the object to be detected can enter the pipe 302 along the inner wall of the pipe 302 in a soaked state. So that the object to be detected can be conveniently introduced into the pipeline 302.

Fig. 2 is another schematic structural diagram of the titration detection apparatus 300 according to an embodiment of the present invention. In some embodiments, as shown in FIG. 2, a first discharge port 308 may also be included on conduit 302. By providing the first discharge port 308 in the pipe 302, waste liquid generated during the detection process can be smoothly discharged out of the pipe 302. For example, before performing titration detection using the titration detection apparatus 300, the pipeline 302 may be flushed with an object to be detected and the like, and waste liquid may be discharged through the first discharge port 308, so as to prevent substances in the pipeline 302 from affecting the result of the titration detection.

In some embodiments, as shown in fig. 2, the first exhaust port 308 may be located higher than the first intake port 3021. Thus, the substance to be detected can be caused to enter the channel 302 by utilizing the capillary phenomenon. Alternatively, the first discharge port 308 is not lower than the inlet of the first pump 303.

In some embodiments, as shown in fig. 2, the flow direction of the analyte to be detected and the titration liquid in the pipeline 302 can be as indicated by the arrow, i.e., in a clockwise direction. However, the present invention is not limited thereto, and the flow direction of the analyte to be detected and the titration solution in the pipeline 302 may be counterclockwise.

In some embodiments, as shown in fig. 2, an object inlet pipe 306 may be disposed upstream of the first inlet port 3021, one end of the object inlet pipe 306 is communicated with the pipeline 302, the other end is communicated with a device for containing an object, and a flow control device (not shown) may be disposed on the object inlet pipe 306. For example, the flow control device may be a valve capable of controlling the opening or closing of a line, such as a solenoid valve or the like, or a controller having a flow calculation function or the like. Thus, the flow control device can be used to control the movement of the object to be detected into the pipeline 302 or to calculate the amount of the object to be detected entering the pipeline 302, so that the control can be performed more accurately.

Alternatively, the analyte inlet pipe 306 may be provided with a second pump 307. The second pump 307 may be any pump capable of flowing the analyte into the line 302. For example, the second pump 307 may be a sampling pump. Thereby, a pressure difference can be formed at the first inlet port 3021 by the second pump 307, so that the object to be detected smoothly enters the pipeline 302.

Alternatively, the analyte inlet pipe 306 may be provided with both the flow control device and the second pump 307.

Further alternatively, the second pump 307 may be provided in the pipe 302.

Alternatively, the second pump 307 may be provided in the pipe 302, and the embodiment of the present application is not limited thereto.

In some embodiments, the line 302 may be a circulation line, and the substance to be detected and the titration solution are mixed and flowed in the circulation line. By providing the pipe 302 as a circulation pipe, the substance to be detected and the titration liquid can be sufficiently mixed and flowed in the circulation pipe 302 under the control of the first pump 303, but the present application is not limited thereto, and in the case where the mixing efficiency is sufficiently high, the pipe 302 may not be in the form of a circulation pipe.

In some embodiments, as shown in fig. 2, a titration liquid inlet pipe 3025 may be disposed downstream of the first inlet port 3021, the titration liquid inlet pipe 3025 having one end in communication with the conduit 302 and another end in communication with a device containing a titration liquid, and a flow control device (not shown) may be disposed on the titration liquid inlet pipe 3025. For example, the flow control device may be a valve capable of controlling the opening or closing of a line, such as a solenoid valve or the like, or a controller having a flow calculation function or the like. Thus, the flow control device can be used to control the action of the titration liquid entering the pipeline 302 or calculate the amount of the object to be detected entering the pipeline 302, so that the control can be more accurately carried out

Alternatively, the titration liquid inlet pipe 3025 may be provided with a third pump 3024, and the third pump 3024 may be any pump (such as a peristaltic pump) capable of flowing the titration liquid into the line 302, and the number of the third pumps 3024 is matched with the type of the titration liquid. For example, in the case where there are three types of the titration liquids, the number of the third pumps 3024 may be 3, for causing three types of the titration liquids to flow into the pipe 302, respectively.

Alternatively, the titration solution inlet pipe 3025 may be provided with a flow control device and a third pump 3024 at the same time.

Further alternatively, the third pump 3024 may be provided in the pipe 302, and the embodiment of the present invention is not limited thereto.

In some embodiments, as shown in fig. 2, conduit 302 may further include a mixer 304, and mixer 304 may be provided with a flow perturbation structure. By providing the mixer 304, the flow pattern of the substance to be detected and the titrant flowing through the pipe 302 can be changed, and thus, the substance to be detected and the titrant can be more sufficiently mixed.

Fig. 3 is a schematic structural view of a mixer 304 according to an embodiment of the present invention, fig. 4 is a cross-sectional view of the mixer 304 taken along a section line AA' of fig. 3, and fig. 5 is another cross-sectional view of the mixer 304.

In some embodiments, as shown in fig. 4-5, the flow perturbation structure of mixer 304 may include curved flow channel 3041. Therefore, the flowing mode of the object to be detected and the titrating solution can be changed in a simple mode, and the object to be detected and the titrating solution can be mixed more fully. However, the present invention is not limited to this, and the turbulent structure may be formed in other ways, for example, a structure that changes the cross-sectional area of the flow channel is provided in the mixer 304, or a structure that changes the direction of the flow channel is provided, or the like.

In some embodiments, as shown in fig. 3, the titration liquid inlet port 3022 may be disposed in the mixer 304, the mixer 304 having a second inlet port 3042 and a first outlet port 3043, the second inlet port 3042 and the first outlet port 3043 being connected to the conduit 302, respectively. Thus, the titrant may enter the mixer 304 through the titrant inlet port 3022, i.e. the titrant, when entering the pipe 302, first passes through the mixer 304, enters the pipe 302 through the first outlet port 3043 after being mixed in the mixer 304 with the substance to be detected entering the mixer 304 from the pipe 302 through the second inlet port 3042. Thus, the analyte and the titration solution can be further sufficiently mixed.

In some embodiments, the number of the titrant inlets 3022 provided to the mixer 304 is matched to the type of the titrant. For example, as shown in fig. 3, in the case where there are three kinds of the titrant, the number of the titrant inlets 3022 of the mixer 304 may be 3. Thus, each titrant can first enter the mixer 304 through the titrant inlet port 3022 to be mixed with the sample, and the sample and the titrant can be further sufficiently mixed.

However, the present invention is not limited thereto, and the titrant inlet port 3022 may be provided in the line 302 as shown in fig. 2.

In some embodiments, as shown in fig. 2, the mixer 304 has a second inlet port 3042 and a first outlet port 3043, the second inlet port 3042 being upstream of the titrant inlet port 3022 along the direction of flow of the fluid within the conduit 302. This enables the sample and the titration solution in the line 302 to smoothly flow into the mixer 304.

In some embodiments, the rate of change of the cross-sectional area of the end of the mixer near the second inlet port is greater than the rate of change of the cross-sectional area of the end of the mixer near the first outlet port, as shown in FIG. 3, the cross-sectional area of the end of the mixer 304 near the first outlet port 3043 has a tendency to decrease in the direction of flow. Alternatively, the cross-sectional area of the end of the mixer 304 near the second inlet port 3042 tends to become larger in the flow direction, and the larger speed is faster than the speed at which the cross-sectional area of the end of the mixer 304 near the first outlet port 3043 is reduced. This enables the analyte and the titration solution to be further sufficiently mixed.

In some embodiments, as shown in fig. 2, conduit 302 may include a light-transmissive section 3023 (shown in dashed and dotted lines in fig. 2), light-transmissive section 3023 may include a light-transmissive portion integrally formed with conduit 302, or light-transmissive section 3023 may include a light-transmissive portion sealingly connected at both ends to conduit 302, or light-transmissive section 3023 may include both a light-transmissive portion integrally formed with conduit 302 and a light-transmissive portion sealingly connected at both ends to conduit 302. By providing the light-transmitting section 3023 on the pipeline 302, optical parameters and/or electrical parameters of the substance to be detected and the titration liquid in the pipeline 302 can be obtained, so that relevant processing can be performed by using the optical parameters and/or the electrical parameters, for example, an abnormal or normal titration detection process of the titration detection apparatus 300 can be detected, or a titration end point of the titration detection process can be determined, and the content of a specified substance in the substance to be detected (for example, the content can be used for water hardness detection) can be calculated according to the amount of the titration liquid added at the titration end point time point, and the like. For the embodiment of how to calculate the content of the specified substance in the substance to be detected, reference may be made to the related art, and details thereof are not repeated here.

In some embodiments, as shown in fig. 2, the titration detection apparatus 300 may further include a sensor 305. The sensor 305 is disposed on the light-transmissive section 3023 or an inner surface of the housing of the titration detection apparatus 300 for obtaining an optical and/or electrical parameter of the liquid flowing through the light-transmissive section 3023. For example, the titration detection apparatus 300 may further include a terminal device with a shooting function, and the terminal device may shoot an image of the transparent segment 3023, and obtain the optical parameter and/or the electrical parameter of the liquid flowing through the transparent segment 3023 through the image, and the specific obtaining manner may refer to related technologies, which are not described herein again.

In some embodiments, as shown in fig. 2, the controller 301 may be in communication with the sensor 305 (by wire or wirelessly) to obtain an optical parameter and/or an electrical parameter of the object to be detected of the titration detection apparatus 300 (receive the optical parameter and/or the electrical parameter sent by the sensor), and detect that the titration detection process of the titration detection apparatus 300 is abnormal or normal according to the optical parameter and/or the electrical parameter, or may determine a titration endpoint of the titration detection process, and further calculate the content of a specified substance in the object to be detected (for example, may be used for water hardness detection) according to the amount of the titration liquid added at the titration endpoint time point, and so on. For the embodiment of how to calculate the content of the specified substance in the substance to be detected, reference may be made to the related art, and details thereof are not repeated here.

In some embodiments, optionally, the apparatus may further include a display input device 309, which may be used to display the titration progress (0-100%) of each titration solution, or display the titration amount of each titration solution, or display whether an abnormality is detected, or display what kind of abnormality occurs, so that the maintenance personnel can check the abnormality in time.

Embodiments of the second aspect

Embodiments of a second aspect of the present application provide a water supply system. FIG. 6 is a schematic view of a water supply system according to an embodiment of the present application. As shown in fig. 6, the water supply system 800 comprises the titration detection apparatus 300 according to an embodiment of the first aspect.

In some embodiments, the water supply system 800 may include a water purification apparatus 801 and/or a hot water supply apparatus 802.

In some embodiments, the first inlet port of the titration detection apparatus 300 is connected to a water outlet or inlet of a water supply system 800 (e.g., water purification apparatus 801 or hot water supply apparatus 802). For example, as shown in fig. 6, the first inlet of the titration detection apparatus 300 is connected to the outlet of the water supply system 800. This makes it possible to detect the content of a predetermined substance in a sample (for example, hardness detection) using a liquid (water) flowing into or out of the water supply system 800 as the sample.

FIG. 7 is another schematic view of a water supply system according to an embodiment of the present application. As shown in fig. 7, the water supply system 900 comprises the titration detection apparatus 300 according to an embodiment of the first aspect.

In some embodiments, the water supply system 900 may include a water purification apparatus 901 and/or a hot water supply apparatus 902.

In some embodiments, the first inlet port of the titration detection apparatus 300 is connected to a water outlet or inlet of the water supply system 900 (e.g., water purification apparatus 901 or hot water supply apparatus 902). This makes it possible to detect the content of a predetermined substance in an object to be detected (for example, hardness detection) using a liquid (water) flowing into or out of the water supply system 900 as the object.

In some embodiments, as shown in fig. 7, the water supply system 900 further includes a water softening device 903, and the titration detection device 300 is disposed between the water softening device 903 and the water purification device 901, or the titration detection device 300 is disposed between the water softening device 903 and the hot water supply device 902. Thus, the liquid (water) flowing out of the water softener 903 can be used as a sample, and the content of a predetermined substance in the sample can be detected (for example, hardness detection), whereby the water softening effect of the water softener 903 can be detected.

While the utility model has been described with reference to specific embodiments, it will be apparent to those skilled in the art that these descriptions are illustrative and not intended to limit the scope of the utility model. Various modifications and alterations of this invention will become apparent to those skilled in the art based upon the spirit and principles of this invention, and such modifications and alterations are also within the scope of this invention.

Claims

1. A titration detection apparatus, wherein said apparatus comprises:

the device comprises a pipeline and a first pump arranged on the pipeline;

the pipeline comprises a first inlet port and a titration solution inlet;

2. The apparatus of claim 1, wherein the conduit further comprises a mixer, the mixer being provided with a flow disrupting structure.

3. The apparatus of claim 2, wherein the flow perturbation structure comprises a curved flow channel.

4. The apparatus of claim 2, wherein the titrant inlet is disposed in the mixer, the mixer having a second inlet port and a first outlet port, the second inlet port and the first outlet port being connected to the conduit, respectively.

5. The apparatus of claim 2, wherein the mixer has a second inlet port and a first outlet port, the second inlet port being located upstream of the titrant inlet port in the direction of flow of the fluid within the conduit.

6. The apparatus of claim 4, wherein the number of the titrant inlets provided to the mixer is matched to the kind of the titrant.

7. The apparatus of claim 4 or 5, wherein the cross-sectional area of the end of the mixer adjacent the first outlet tapers in the direction of flow of the fluid in the conduit; alternatively, the cross-sectional area of the end of the mixer near the second inlet port tends to increase in the direction of flow of the fluid in the pipe.

8. The apparatus of claim 7, wherein the rate of change of the cross-sectional area of the end of the mixer proximate the second inlet port is greater than the rate of change of the cross-sectional area of the end of the mixer proximate the first outlet port.

9. The device according to any one of claims 1 to 6, wherein the conduit comprises a light-transmitting section comprising a light-transmitting portion integrally formed with the conduit and/or a light-transmitting portion sealingly connected at both ends to the conduit.

10. The apparatus of claim 9, further comprising: and the sensor is arranged on the inner surface of the light-transmitting section or the shell of the titration detection device and is used for acquiring color related parameters of liquid flowing through the light-transmitting section.

11. The apparatus of claim 10, further comprising: and the controller is communicated with the sensor and is used for acquiring the color related parameters and judging a titration end point according to the color related parameters.

12. The device according to any one of claims 1 to 6, wherein a test object inlet pipe is arranged upstream of the first inlet port, and a flow control device and/or a second pump are arranged on the test object inlet pipe;

alternatively, a second pump is provided on the conduit.

13. The apparatus of any one of claims 1 to 6, further comprising a first discharge port on the pipeline, the first discharge port being located higher than the first inlet port, or the first discharge port being not lower than the inlet of the first pump.

14. The device of any one of claims 1 to 6, wherein the first pump is a peristaltic pump.

15. The device according to any one of claims 1 to 6, wherein the pipeline is a circulation pipeline, and the substance to be detected and the titration liquid flow in a mixed manner in the circulation pipeline.

16. A water supply system comprising the titration detection apparatus according to any one of claims 1 to 15.

17. The water supply system of claim 16, wherein the water supply system comprises a water purification device and/or a hot water supply device.

18. The system of claim 17, wherein the first inlet port of the titration detection means is connected to a water outlet or water inlet of the water supply system.

19. The system of claim 17, wherein the water supply system further comprises a water softening device, and the titration detection device is disposed between the water softening device and the water purification device or between the water softening device and the hot water supply device.