CN210572282U - Constant volume component and standard recovery rate testing device - Google Patents
Constant volume component and standard recovery rate testing device Download PDFInfo
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- CN210572282U CN210572282U CN201921527249.2U CN201921527249U CN210572282U CN 210572282 U CN210572282 U CN 210572282U CN 201921527249 U CN201921527249 U CN 201921527249U CN 210572282 U CN210572282 U CN 210572282U
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Abstract
The utility model belongs to the technical field of water quality analysis technique and specifically relates to a constant volume subassembly and add standard rate of recovery testing arrangement are related to, the constant volume subassembly includes: the sampling device comprises an accommodating device and a sampling component, wherein part of the sampling component penetrates into the accommodating device and is used for introducing sample water to be detected into the accommodating device; and the inner surface of the constant volume component is formed with a supporting member, and the constant volume component further comprises a constant volume block, wherein the constant volume block is connected with the supporting member and is positioned at a preset position corresponding to the liquid discharge part in the accommodating device. The application provides a constant volume subassembly through the constant volume area that reduces the sample water that awaits measuring for the sample water that awaits measuring at the constant volume in-process is less through the volume that the flowing of flowing out of flowing back portion, and opening and closing of the accurate control drainage portion of being convenient for, and then has showing and has improved the constant volume precision.
Description
Technical Field
The application relates to the technical field of water quality analysis, in particular to a constant volume component and a standard adding recovery rate testing device.
Background
At present, the standard adding recovery is divided into blank standard adding recovery and sample standard adding recovery, and in order to reflect whether the analysis method is suitable for a measured substrate, the standard adding recovery of the sample is usually tested in an online water quality analysis instrument, so that an analyst is helped to find problems encountered in water quality analysis in time, and the validity of reported data is ensured.
And (3) sample labeling and recovering: taking two parts of the same sample, and adding a quantitative standard substance of the component to be detected into one part of the sample; the two parts are analyzed according to the same analysis steps, the result obtained by adding the standard substance is subtracted from the result obtained by adding the standard substance, and the ratio of the difference value to the theoretical value of the added standard substance is the sample standard adding recovery rate. The theoretical normalized recovery value is 100%, and different analytical instruments have different allowable ranges.
The on-line normalized recovery test is generally related to the following parameters: the standard sample concentration, the standard sample volume, the raw water volume (the standard sample volume is generally 1 percent of the raw water volume), and the measurement error of an online water quality analyzer.
Among the parameters, the concentration of a standard sample can be ensured by purchasing a certified standard substance, the volume of the standard sample is generally small and is controlled by a miniature precision metering pump, the indication error of an online water quality analyzer follows the corresponding standard, and raw water has a large volume (generally more than or equal to 200mL) and is difficult to quantify and has a large volume fixing error.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a constant volume subassembly and add mark rate of recovery testing arrangement to the ration difficulty that exists among the prior art is solved to a certain extent, the great technical problem of constant volume error.
The application provides a constant volume assembly, which comprises an accommodating device and a sample injection component, wherein part of the sample injection component penetrates through the inside of the accommodating device and is used for introducing sample water to be detected into the accommodating device, a liquid drainage part for communicating the inside of the accommodating device with the outside is formed on the side wall of the accommodating device, and part of the sample water to be detected can be discharged out of the accommodating device through the liquid drainage part;
the inner surface of the constant volume component is formed with a supporting member, and the constant volume component further comprises a constant volume block which is connected with the supporting member and is positioned at a preset position corresponding to the liquid discharge part in the accommodating device.
In the above technical solution, further, an opening is formed at the top of the accommodating device, a cover is disposed at the opening of the accommodating device, and the cover is formed with the supporting member that supports the constant volume block.
In any of the above technical solutions, further, the liquid discharge portion includes a liquid discharge port formed in a side wall of the accommodating device, a constant volume pipeline communicated with the liquid discharge port, and a constant volume valve disposed on the constant volume pipeline.
In any one of the above technical solutions, further, the sampling member includes a sampling pipeline, one end of the sampling pipeline is communicated with a sample water storage device, the sample water storage device is used for storing the sample water to be detected, the other end of the sampling pipeline passes through the cover body to enter the accommodating device, and a sampling pump is arranged on the sampling pipeline.
In any of the above technical solutions, further, an overflow port is further disposed on a side wall of the accommodating device, a position height of the overflow port is higher than a position height of the liquid discharge port, and the overflow port is used for discharging the excess sample water to be measured in the accommodating device.
In any one of the above technical solutions, further, the overflow port is provided with a detection device, the detection device is electrically connected with the sample pump, and the detection device detects that the sample water to be detected flows out through the overflow port and controls the sample pump to be closed.
In any of the above technical solutions, further, the bottom of the accommodating device is communicated with a sewage draining device through a sewage draining pipeline, and a sewage draining valve is arranged on the sewage draining pipeline;
the overflow port is also communicated with the sewage discharge device through an overflow pipeline, and the surplus sample water to be detected flowing out from the overflow port flows into the sewage discharge device through the overflow pipeline.
The application also provides a device for testing the recovery rate of the added standard, which comprises the constant volume component and a standard liquid storage device, wherein the standard liquid storage device is communicated with the accommodating device through a first pipeline, and the first pipeline is provided with a metering pump for controlling the amount of the standard liquid introduced into the accommodating device;
and the water quality analysis instrument is communicated with the sampling pipeline through a second pipeline, and is communicated with the accommodating device through a third pipeline.
In the above technical scheme, furtherly, it still includes even gas pipeline to add mark rate of recovery testing arrangement, the one end and the air pump of even gas pipeline are linked together, the other end of even gas pipeline passes the lid gets into in the accommodating device, just even gas pipeline gets into one end in the accommodating device is provided with even gas connection, be used for to ventilate in the accommodating device, make the sample water that awaits measuring with the mark liquid mixes.
In any of the above technical solutions, further, a three-way valve is disposed at a sample inlet of the water quality analyzer, and the three-way valve includes a first port, a second port, and a common port; the public port is communicated with the sample inlet, the first port is communicated with the sample inlet pipeline, and the second port is communicated with the accommodating device.
Compared with the prior art, the beneficial effect of this application is:
the constant volume assembly comprises an accommodating device and a sample injection component, wherein one part of the sample injection component penetrates through the accommodating device, and the other part of the sample injection component extends to the outside of the accommodating device and is communicated with a storage device for storing sample water to be detected, so that the sample water to be detected can be introduced into the accommodating device through the sample injection component; the lateral wall of the containing device is provided with a liquid discharging part which enables the inside of the containing device to be communicated with the outside, and after enough sample water to be measured is introduced into the containing device, part of the sample water to be measured can be discharged out of the containing device through the liquid discharging part so as to finish the constant volume operation. The constant volume assembly also comprises a constant volume block, a supporting member is formed on the inner surface of the constant volume assembly, the constant volume block is connected with the supporting member, so that the constant volume block is positioned at a preset position corresponding to the liquid discharge part in the accommodating device, the distance between the constant volume block and the inner wall of the accommodating device is obviously smaller than the inner diameter length of the accommodating device, namely, the sample water to be measured has a smaller constant volume area, when the wall surface of the sample water to be measured in the accommodating device is positioned between the constant volume block and the inner wall of the accommodating device, the sample water to be measured can slowly flow out through the liquid discharge part due to the smaller constant volume area, when the liquid level height of the sample water to be measured reaches the preset position, the sample water to be measured can stop flowing out by closing the liquid discharge part, the phenomenon that the sample water to be measured flows out through the liquid discharge part once too much is avoided, and the liquid discharge part cannot be accurately controlled to be closed, the constant volume precision is influenced, and even the constant volume fails.
It can be seen that the constant volume subassembly that this application provided is through the constant volume area that reduces the sample water that awaits measuring for the sample water that awaits measuring is less through the volume that the flowing of flowing out of flowing back portion once at the constant volume in-process, and the accurate control drainage portion of being convenient for opens and close, and then has obviously improved the constant volume precision.
The device for testing the recovery rate of the added standard comprises the constant volume component, a standard solution storage device and a water quality analyzer; the standard liquid storage device is communicated with the containing device through a first pipeline, through controlling a metering pump on the first pipeline, the standard liquid of a preset amount can be introduced into the containing device, the water quality analyzer is communicated with the sample injection pipeline through a second pipeline, the water quality analyzer is communicated with the containing device through a third pipeline, the sample water to be detected and the sample water to be detected are respectively tested, the sample water to be detected is completed by the water quality analyzer, the standard recovery rate can be calculated according to the test result, therefore, the constant volume assembly provided by the application has higher constant volume precision, and the test result of the standard recovery rate can be obtained more accurately and more closely to the theoretical value, the operation is simple and convenient, the accuracy of the test result can be ensured, and the qualification rate of the standard recovery rate is ensured.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a spiked recovery rate testing device according to an embodiment of the present disclosure;
FIG. 2 is an enlarged schematic view of the volumetric assembly provided in FIG. 1 at A;
fig. 3 is a schematic diagram illustrating the effect of the before and after standard recovery rate test of the standard recovery rate testing device according to the embodiment of the present application.
Reference numerals: 1-containing device, 2-volume fixing block, 3-supporting member, 4-cover body, 5-liquid discharging port, 6-volume fixing pipeline, 7-volume fixing valve, 8-sample feeding pipeline, 9-sample feeding pump, 10-overflow port, 11-overflow pipeline, 12-sewage discharging pipeline, 13-sewage discharging device, 14-standard liquid storage device, 15-first pipeline, 16-metering pump, 17-second pipeline, 18-third pipeline, 19-gas homogenizing pipeline, 20-gas homogenizing joint, 21-three-way valve, 211-first port, 212-second port and 213-public port.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A volumetric assembly and normalized recovery test device according to some embodiments of the present application are described below with reference to fig. 1.
Referring to fig. 1, an embodiment of the present application provides a constant volume assembly, including a container 1 and a sample injection member, where a part of the sample injection member penetrates through the inside of the container 1 to introduce sample water to be measured into the container 1, a liquid discharge portion is formed on a side wall of the container 1 to communicate the inside and the outside of the container 1, and a part of the sample water to be measured can be discharged out of the container 1 through the liquid discharge portion; the inner surface of the constant volume assembly is formed with a support member 3, and the constant volume assembly further includes a constant volume block 2, the constant volume block 2 being connected with the support member 3 and positioned at a predetermined position corresponding to the liquid discharge portion inside the container 1.
The constant volume assembly comprises an accommodating device 1 and a sample injection component, wherein part of the sample injection component penetrates through the accommodating device 1, and the other part of the sample injection component is positioned outside the accommodating device 1 and communicated with a storage device for storing sample water to be detected, so that the sample water to be detected can be introduced into the accommodating device 1 through the sample injection component; the side wall of the containing device 1 is provided with a liquid discharging part which enables the inside of the containing device 1 to be communicated with the outside, and when a sufficient amount of sample water to be measured is introduced into the containing device 1, part of the sample water to be measured can be discharged out of the containing device 1 through the liquid discharging part so as to finish the constant volume operation. The constant volume component also comprises a constant volume block 2, a supporting member 3 is formed on the inner surface of the constant volume component, the constant volume block 2 is connected with the supporting member 3, so that the constant volume block 2 is positioned at a preset position corresponding to the liquid drainage part in the accommodating device 1, the distance length between the constant volume block 2 and the inner wall of the accommodating device 1 is obviously smaller than the internal dimension (such as the inner diameter length) of the accommodating device 1, namely, the sample water to be detected has a smaller constant volume area, when the wall surface of the sample water to be detected in the accommodating device 1 is positioned between the constant volume block 2 and the inner wall of the accommodating device 1, the sample water to be detected can slowly flow out through the liquid drainage part due to the smaller constant volume area, when the liquid level of the sample water to be detected reaches the preset position, the sample water to be detected can stop flowing out when the liquid level of the liquid drainage part reaches the preset position, the phenomenon that the sample water to be detected flows out through the liquid drainage part once, and the liquid drainage part cannot, the constant volume precision is influenced, and even the constant volume fails.
It can be seen that the constant volume subassembly that this application provided is through the constant volume area that reduces the sample water that awaits measuring for the sample water that awaits measuring is less through the volume that the flowing of flowing out of flowing back portion once at the constant volume in-process, and the accurate control drainage portion of being convenient for opens and close, and then has obviously improved the constant volume precision.
Optionally, the accommodating device 1 is a sample cup commonly used in the volume fixing process in the prior art, is of a transparent structure, and can visually observe the position of the liquid level inside the accommodating device.
Optionally, the material of the constant volume block 2 may be organic glass, but is not limited thereto, and the constant volume block has better corrosion resistance, wear resistance and longer service life.
In one embodiment of the present application, preferably, as shown in fig. 1, an opening is formed at the top of the container 1, a cover 4 is disposed at the opening of the container 1, and the cover 4 is formed with a support member 3 supporting the fixed volume 2.
In this embodiment, the cover 4 covers the opening of the accommodating device 1, a supporting member 3 is disposed on a side surface of the cover 4 facing the inside of the accommodating device 1, one end of the supporting member 3 is connected to the cover 4, and the other end of the supporting member 3 is connected to the constant volume block 2, so that the constant volume block 2 can be accommodated in the accommodating device 1 and fixed to the accommodating device 1 at a relative position, a gap is left between the constant volume block 2 and the inner wall of the accommodating device 1, when the liquid level of the sample water to be measured is located between the constant volume block 2 and the accommodating device 1, a small constant volume area is provided, and under the action of the cover 4, when the sample water to be measured is injected into the accommodating device 1, the sample water to be measured does not overflow or fly out of the accommodating device 1.
In one embodiment of the present application, preferably, as shown in fig. 1, the liquid discharging portion includes a liquid discharging port 5 opened on a side wall of the container 1, a constant volume pipeline 6 communicated with the liquid discharging port 5, and a constant volume valve 7 provided on the constant volume pipeline 6.
In this embodiment, open constant volume valve 7, the appearance water that awaits measuring in the accommodate device 1 can be a small amount through leakage fluid dram 5, discharge after the appearance pipeline 6 is decided to the slow inflow, in order to accomplish the constant volume operation, close constant volume valve 7 after the liquid level of the appearance water that awaits measuring in the accommodate device 1 reaches predetermined position, the appearance water that awaits measuring in the accommodate device 1 no longer flows, the constant volume finishes, because the appearance water that awaits measuring has less constant volume area in accommodate device 1, make when opening or closing constant volume valve 7, the appearance water that awaits measuring can be a small amount, flow slowly, and can not once only flow in a large number, and then can show promotion constant volume precision.
In an embodiment of the present application, preferably, as shown in fig. 1, the sample injection member includes a sample injection pipeline 8, one end of the sample injection pipeline 8 is communicated with a sample water storage device, the sample water storage device is used for storing sample water to be measured, the other end of the sample injection pipeline 8 penetrates through the cover 4 to enter the inside of the accommodating device 1, and a sample injection pump 9 is disposed on the sample injection pipeline 8.
In this embodiment, the sample water storage device is communicated with the accommodating device 1 through the sample pipeline 8, the sample pump 9 arranged on the sample pipeline 8 is started, the sample water to be measured in the sample water storage device can be introduced into the accommodating device 1, and after a sufficient amount of sample water to be measured is introduced into the accommodating device 1, the sample pump 9 is closed, and the sample water to be measured is stopped from being continuously injected into the accommodating device 1.
Preferably, one end of the sample introduction pipeline 8 located inside the accommodating device 1 extends to the middle lower part of the accommodating device 1, so that impact force on the bottom wall of the accommodating device 1 is reduced when sample water to be detected is introduced into the accommodating device 1.
In one embodiment of the present application, preferably, as shown in fig. 1, the sidewall of the container 1 is further provided with an overflow port 10, the overflow port 10 is located at a position higher than the liquid discharge port 5, and the overflow port 10 is used for discharging the excess sample water to be measured in the container 1.
In this embodiment, when the device for containing 1 is filled with sufficient sample water to be measured, the redundant sample water to be measured firstly flows out through the overflow port 10, when the liquid level of the sample water to be measured is lower than the overflow port 10, the device for containing 1 does not have excessive redundant sample water to be measured, and at this moment, the constant volume operation is performed by opening the constant volume valve 7, so that the constant volume precision is improved.
In one embodiment of the present application, preferably, as shown in fig. 1, a detection device is disposed at the overflow port 10, the detection device is electrically connected to the sample pump 9, and the detection device controls the sample pump 9 to be closed when detecting that the sample water to be detected flows out through the overflow port 10.
In this embodiment, when the detection device detects that there is liquid to flow out of the overflow port 10, the sampling pump 9 is controlled to close, the sample water to be measured in the sample water storage device stops injecting into the accommodating device 1 immediately, the amount of the sample water to be measured introduced into the accommodating device 1 is accurately controlled, the sample water to be measured in the accommodating device 1 is prevented from overflowing, and meanwhile, a proper amount of sample water to be measured is injected into the accommodating device 1, so that the constant volume process is controlled conveniently, and the constant volume precision is improved.
Wherein, detection device chooses for use common sensor among the prior art, preferably, chooses for use proximity switch for the sample water that awaits measuring reachs overflow mouth 10 department, or when flowing into overflow pipeline 11 and flowing to proximity switch, need not await measuring sample water direct contact to detection device, and proximity switch can perceive the signal, and then control sampling pump 9 closes, and control accuracy is high, and can avoid awaiting measuring sample water damage detection device.
In one embodiment of the present application, preferably, as shown in fig. 1, the bottom of the container 1 is communicated with a sewage device 13 through a sewage line 12, and the sewage line 12 is provided with a sewage valve; the overflow port 10 is also communicated with a sewage discharge device 13 through an overflow pipeline 11, and the excessive sample water to be detected flowing out from the overflow port 10 flows into the sewage discharge device 13 through the overflow pipeline 11.
In this embodiment, the sample solution after measurement in the container 1 and the excessive sample water flowing out through the overflow port 10 all flow into the drainage device 13 for uniform recovery processing, so as to avoid pollution.
As shown in fig. 1, an embodiment of the present application further provides a calibration recovery rate testing device, which includes the above constant volume component, and a calibration liquid storage device 14, where the calibration liquid storage device 14 is communicated with the accommodating device 1 through a first pipeline 15, and a metering pump 16 is arranged on the first pipeline 15 and is used for controlling the amount of the calibration liquid introduced into the accommodating device 1; and the water quality analyzer is communicated with the sample injection pipeline 8 through a second pipeline 17, and is communicated with the accommodating device 1 through a third pipeline 18.
In this embodiment, the metering pump 16 is turned on, so that the amount of the standard liquid introduced into the containing device 1 can be accurately controlled, thereby improving the accuracy of the measurement result of the water quality analyzer.
Firstly, starting a water quality period analyzer to lead the sample water to be tested in the sample introduction pipeline 8 to be introduced into the water quality analyzer through a second pipeline 17 (at the moment, a third pipeline 18 is closed), and obtaining a test result of the sample water to be tested without adding a standard through the water quality analyzer; then, carrying out constant volume on the sample water to be measured through a constant volume component, adding a predetermined amount of standard liquid after the constant volume is finished, and mixing the standard liquid and the sample water to be measured after the constant volume is finished; finally, the second pipeline 17 is closed, the third pipeline 18 is opened, the mixed liquid of the sample water to be measured and the standard liquid enters the water quality analyzer for measurement, after the sample water to be measured is measured for one time by the water quality analyzer, the standard liquid with a preset amount is added into the same sample water to be measured, the water quality analyzer is used for testing, and the recovery rate can be calculated by a formula according to the measured values of the water samples before and after the standard addition, wherein the formula is as follows:
wherein R is the recovery rate of the added standard, B is the measured value of the water sample after the added standard, A is the measured value of the sample water to be measured, V1Volume of the standard solution (mL), C concentration of the standard solution (mg/L), V2The volume of the water sample (mL) after the addition of the standard solution.
As shown in fig. 3, fig. 3 is the effect schematic diagram of the standard recovery rate test around the embodiment of the present invention, it can be seen that, after the sample water capacity error is reduced, the standard recovery rate test value is also closer to the theoretical value of 100%.
In an embodiment of the present application, preferably, as shown in fig. 1, the labeling recovery rate testing device further includes an air-homogenizing pipeline 19, one end of the air-homogenizing pipeline 19 is communicated with the air pump, the other end of the air-homogenizing pipeline 19 penetrates through the cover 4 and enters the accommodating device 1, and an air-homogenizing joint 20 is arranged at one end of the air-homogenizing pipeline 19 entering the accommodating device 1, and is used for blowing air into the accommodating device 1 to mix the sample water to be tested with the labeling liquid.
In this embodiment, the air pump is turned on, and the inert shielding gas is introduced into the nano-device 1 through the gas-homogenizing pipe 19, so that the sample water to be tested and the standard liquid can be fully mixed, and the accuracy of the test result can be ensured.
Preferably, the gas homogenizing pipeline 19 is communicated with the sample injection pipeline 8 and then extends to the inside of the accommodating device 1 through the same pipeline, so that the test operation can be normally completed, the pipelines are reduced, and the structure is simplified.
In one embodiment of the present application, preferably, as shown in fig. 2, a three-way valve 21 is disposed at the sample inlet of the water quality analyzer, and the three-way valve 21 includes a first port 211, a second port 212, and a common port 213; the common port 213 communicates with the sample inlet, the first port 211 communicates with the sample inlet pipeline 8, and the second port 212 communicates with the accommodating device 1.
In this embodiment, the three-way valve 21 may be a three-way electromagnetic valve, and the on/off control is performed to control the passage, so as to reduce the complexity of manual operation. When the three-way electromagnetic valve is powered off, the first port 211 is communicated with the common port 213, so that the water quality analyzer can extract sample water to be detected in the sample water storage device into the water quality analyzer for detection; when the three-way electromagnetic valve is energized, the second port 212 is communicated with the common port 213, and the water quality analyzer can extract the mixed liquid of the sample water to be detected and the standard liquid in the containing device 1 into the water quality analyzer for detection.
The standard adding recovery rate testing device provided by the embodiment of the application comprises the constant volume component, a standard solution storage device 14 and a water quality analyzer, wherein the constant volume component is arranged in any one of the embodiments; the standard liquid storage device 14 is communicated with the accommodating device 1 through the first pipeline 15, through controlling the metering pump 16 on the first pipeline 15, the standard liquid of a preset amount can be introduced into the accommodating device, the water quality analyzer is communicated with the sample injection pipeline 8 through the second pipeline 17, the water quality analyzer is communicated with the accommodating device 1 through the third pipeline 18, the water quality analyzer is used for respectively testing the sample water to be tested and the sample water to be tested, which are added with the standard liquid, of which the constant volume is finished, the standard addition recovery rate can be calculated according to the test result, therefore, the constant volume component provided by the application has higher constant volume precision, and further the test result of the standard addition recovery rate which is more accurate and closer to the theoretical value can be obtained, the operation is simple and convenient, the accuracy of the test result can be ensured, and the qualification rate of the standard addition recovery rate is ensured.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A constant volume component comprises an accommodating device and a sample feeding component, wherein part of the sample feeding component penetrates into the accommodating device and is used for introducing sample water to be detected into the accommodating device,
a liquid discharging part which enables the inside of the accommodating device to be communicated with the outside is formed on the side wall of the accommodating device, and part of the sample water to be measured can be discharged out of the accommodating device through the liquid discharging part;
the liquid discharging device is characterized in that a supporting member is formed on the inner surface of the constant volume component, the constant volume component further comprises a constant volume block, and the constant volume block is connected with the supporting member and is positioned at a preset position corresponding to the liquid discharging part in the accommodating device.
2. The constant volume assembly according to claim 1, wherein an opening is formed at the top of the containing device, a cover body is arranged at the opening of the containing device, and the support member for supporting the constant volume block is formed on the cover body.
3. The constant volume assembly according to claim 2, wherein the liquid discharge part comprises a liquid discharge port arranged on the side wall of the accommodating device, a constant volume pipeline communicated with the liquid discharge port and a constant volume valve arranged on the constant volume pipeline.
4. The constant volume assembly according to claim 3, wherein the sample introduction member comprises a sample introduction pipeline, one end of the sample introduction pipeline is communicated with a sample water storage device, the sample water storage device is used for storing the sample water to be detected, the other end of the sample introduction pipeline penetrates through the cover body to enter the accommodating device, and a sample introduction pump is arranged on the sample introduction pipeline.
5. The constant volume assembly according to claim 4, wherein the side wall of the accommodating device is further provided with an overflow port, the position height of the overflow port is higher than the position height of the liquid discharge port, and the overflow port is used for discharging the redundant sample water to be measured in the accommodating device.
6. The constant volume assembly according to claim 5, wherein a detection device is arranged at the overflow port and electrically connected with the sample pump, and the detection device controls the sample pump to be closed when detecting that the sample water to be detected flows out through the overflow port.
7. The constant volume assembly according to claim 5, wherein the bottom of the containing device is communicated with a sewage draining device through a sewage draining pipeline, and a sewage draining valve is arranged on the sewage draining pipeline;
the overflow port is also communicated with the sewage discharge device through an overflow pipeline, and the surplus sample water to be detected flowing out from the overflow port flows into the sewage discharge device through the overflow pipeline.
8. A normalized recovery test device comprising the volumetric assembly of any one of claims 4-7, and,
the standard liquid storage device is communicated with the accommodating device through a first pipeline, and a metering pump is arranged on the first pipeline and used for controlling the amount of the standard liquid introduced into the accommodating device;
and the water quality analysis instrument is communicated with the sampling pipeline through a second pipeline, and is communicated with the accommodating device through a third pipeline.
9. The labeling recovery rate testing device according to claim 8, further comprising an air homogenizing pipeline, wherein one end of the air homogenizing pipeline is communicated with the air pump, the other end of the air homogenizing pipeline penetrates through the cover body to enter the accommodating device, and an air homogenizing joint is arranged at one end of the air homogenizing pipeline entering the accommodating device and used for ventilating the accommodating device to mix the sample water to be tested with the labeling liquid.
10. The benchmarking recovery rate testing device of claim 8, wherein a three-way valve is arranged at a sample inlet of the water quality analyzer, and comprises a first port, a second port and a common port; the public port is communicated with the sample inlet, the first port is communicated with the sample inlet pipeline, and the second port is communicated with the accommodating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921527249.2U CN210572282U (en) | 2019-09-12 | 2019-09-12 | Constant volume component and standard recovery rate testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921527249.2U CN210572282U (en) | 2019-09-12 | 2019-09-12 | Constant volume component and standard recovery rate testing device |
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| CN210572282U true CN210572282U (en) | 2020-05-19 |
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| CN201921527249.2U Active CN210572282U (en) | 2019-09-12 | 2019-09-12 | Constant volume component and standard recovery rate testing device |
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