TWI755820B - A quantitative fluid sampling device - Google Patents

Abstract

A fluid quantitative sampling device using, for example, a three-way fluid connector and a two-port fluid control The valve combination, or the combination of three-way fluid joint and three-port fluid control valve, cooperates with the action of pump and pump to achieve the quantitative sampling function of conventional rotary sampling valve, and completely solve the problems of life and leakage of conventional rotary sampling valve .

Description

Fluid quantitative sampling device

The present invention relates to the related field of detection and monitoring of quantitative sampling of fluids, in particular to a quantitative sampling device for fluids, which utilizes a fluid control valve to cooperate with the action of a pump to achieve quantitative sampling such as a rotary sampling valve and the ability to send samples to a detection instrument. function, and solve the problems of mechanical wear and easy leakage caused by the use of rotary sampling valves.

The rotary sampling valve is the most used sampling device in the current fluid detection system, and its main function is to complete the quantitative sampling function required for the detection. The structure of the conventional sampling device mainly uses a six-port two-position rotary sampling valve, and the moving part of the valve is manually rotated to change the flow direction of the fluid to complete the sampling function; if the drive of the motor is added. It can also achieve the function of automatic sampling. Due to its universality, there are still new inventions proposed to improve the performance of the six-port two-position rotary sampling valve. For example, the Chinese Patent No. CN101687192A is a sampling valve that replaces the traditional arc channel with a straight channel; and China The invention patent No. CN104781675B is improved from six ports to four ports, with three straight channels, and multiple sampling valves are used in series to achieve the possibility of quantitative sampling and sample processing diversification.

Although the rotary sampling valve is the mainstream sampling device of the detection system, the rotary sampling valve has an inherent problem, which is also a trouble for the inventors to use for many years. The rotary sampling valve is composed of a fixed piece of pipeline and a rotating piece containing a channel, and the function of quantitative sampling is completed by changing the position of the rotating piece; that is, the mechanical rotation causes the use of the rotary sampling valve. The service life is limited. In order to avoid leakage, there is a soft gasket between the fixed plate and the rotating plate. If there is blockage in use or other cleaning and reassembly is necessary, it is basically necessary to replace a new gasket, otherwise the problem of leakage will occur.

Based on the above reasons, in order to solve the problems of service life and leakage, the fluid quantitative sampling device of the present invention uses a fluid control valve and cooperates with the action of the pump to achieve the quantitative sampling function of the conventional rotary sampling valve, and completely solve the problem of the rotary sampling valve. life and leakage issues.

In order to achieve the above purpose, the present invention provides a fluid quantitative sampling device, comprising a container for carrier liquid, at least one pump for carrier liquid, at least one pump for sampling, at least one two-port fluid control valve for carrier liquid, a detection Equipment, at least one two-port fluid control valve for sample, at least one two-port fluid control valve for detection, at least one two-port fluid control valve for recovery, at least one three-way fluid connector for carrier liquid, at least one three-way fluid connector for sample , At least one three-way fluid joint for detection, at least one three-way fluid joint for recovery, at least one sample quantitative loop, a waste liquid container, a sample container and a recovery container, wherein: the carrier liquid uses a pump of a pump. The inlet is connected to the container for the carrier liquid, an outlet of the pump for the carrier liquid is connected to a first end of the three-way fluid joint for the carrier liquid, and the first end of the two-port fluid control valve for the carrier liquid is connected to the carrier liquid With a second end of the three-way fluid joint, the carrier liquid is connected with a first end of the three-way fluid joint for detection with a second end of the two-port fluid control valve, and the sample is connected with a first end of the two-port fluid control valve. One end is connected to a third end of the three-way fluid joint for the carrier liquid, and a second end of the two-port fluid control valve for the sample is connected to a first end of the three-way fluid joint for the sample. An inlet is connected to the sample container, an outlet of the sampling pump is connected to a second end of the three-way fluid connector for the sample, and a first end of the sample measuring ring is connected to a first end of the three-way fluid connector for the sample Three ends, the sample is quantified A second end of the circle communicates with a first end of the three-way fluid joint for this recovery; and a first end of the two-port fluid control valve for this recovery communicates with a second end of the three-way fluid joint for this recovery, A second end of the two-port fluid control valve for recovery is connected to a recovery container, a first end of the two-port fluid control valve for detection is connected to a third end of the three-way fluid joint for recovery, and the two ports for detection are connected to a third end of the three-way fluid joint for recovery. A second end of the fluid control valve communicates with a second end of the three-way fluid joint for detection, a third end of the three-way fluid joint for detection communicates with a first end of the detection instrument, and a second end of the detection instrument The end is communicated with the waste liquid container.

In some embodiments, the fluid quantitative sampling device further includes a diluter, a first end of the diluter is connected to the third end of the three-way fluid connector for detection, and a second end of the diluter is connected to the detection the first end of the instrument.

In some embodiments, the carrier liquid container has a built-in carrier liquid.

In some embodiments, the sample container has a built-in sample.

In some embodiments, when in a sampling state, the two-port fluid control valve for the sample and the two-port fluid control valve for the detection are closed, the carrier liquid in the carrier liquid container flows through the carrier fluid in sequence. Liquid container, pump for carrier liquid, three-way fluid joint for carrier liquid, two-port fluid control valve for carrier liquid, three-way fluid joint for detection, diluter, testing equipment and waste liquid container, and the detection device measures a sensing background value.

In some embodiments, when in the sampling state, the two-port fluid control valve for the sample and the two-port fluid control valve for the detection are closed, the sample in the sample container flows through the sample container in sequence , the sampling pump, the three-way fluid connector for the sample, the sample quantitative ring, the three-way fluid connector for the recovery, the two-port fluid control valve for the recovery, and the recovery container, and a certain amount of sample remains in the Sample dosing circle.

In some embodiments, when in a detection state, the sampling pump is turned off, and the two-port fluid control valve for the carrier liquid and the two-port fluid control valve for recovery are closed at the same time, the carrier liquid is in sequence Flow through the container for the carrier liquid, the pump for the carrier liquid, the three-way fluid connector for the carrier liquid, the two-port fluid control valve for the sample, the three-way fluid connector for the sample, the sample loop, the three-way fluid connector for the recovery A concentration value of the sample is measured by the detection device to the fluid connector, the two-port fluid control valve for detection, the three-way fluid connector for detection, the diluter, the detection device and the waste liquid container.

In order to achieve the above purpose, the present invention also provides a fluid quantitative sampling device, comprising a container for carrier liquid, at least one pump for carrier liquid, at least one three-port fluid control valve for carrier liquid, at least one three-way fluid connector for detection, a Detection equipment, at least one sampling pump, at least one sample three-way fluid connector, at least one sample loop, at least one sample three-port fluid control valve, a waste liquid container, a sample container, and a recovery container, wherein : An inlet of the carrier liquid pump is connected to the container for the carrier liquid, an outlet of the carrier liquid pump is connected to a common end of the three-port fluid control valve for the carrier liquid, and a port of the three-port fluid control valve is used for the carrier liquid. The normally open end communicates with a first end of the three-way fluid joint for detection, a normally closed end of the three-port fluid control valve for the carrier fluid communicates with a first end of the three-way fluid joint for the sample, and a pump for the sampling The inlet is connected to the sample container, an outlet of the sampling pump is connected to a second end of the three-way fluid joint for the sample, and a first end of the sample measuring ring is connected to a third of the three-way fluid joint of the sample. A second end of the sample quantitative ring communicates with a common end of the three-port fluid control valve for the sample; A normally closed end communicates with a second end of the three-way fluid connector for testing, a third end of the three-way fluid connector for testing communicates with a first end of the testing device, and a second end of the testing device This waste liquid container is communicated.

In some embodiments, the fluid quantitative sampling device further includes a diluter, a first end of the diluter is connected to the third end of the three-way fluid connector for detection, and a second end of the diluter is connected to the detection this first end of the device.

In some embodiments, the carrier liquid is filled with a carrier liquid with a container.

In some embodiments, the sample container holds a sample.

In some embodiments, when in a sampling state, the common end of the three-port fluid control valve for the carrier fluid communicates with the normally open end and the common end of the three-port fluid control valve for the sample communicates with the normally open end, then the The carrier liquid flows through the carrier liquid container, the carrier liquid pump, the carrier liquid three-port fluid control valve, the detection three-way fluid connector, the diluter, the detection equipment and the waste liquid container in sequence, And the detection device measures and obtains a sensing background value.

In some embodiments, when in the sampling state, the common end of the three-port fluid control valve for the carrier fluid communicates with the normally closed end and the common end of the three-port fluid control valve for the sample communicates with the normally closed end, then the The sample in the sample container flows through the sample container, the sampling pump, the sample three-way fluid connector, the sample quantitative loop, the sample three-port fluid control valve and the recovery container in sequence, and is stored in the sample container. The sample loop retains a certain amount of sample.

In some embodiments, in a detection state, the sampling pump is turned off, and the common end of the three-port fluid control valve for the carrier fluid communicates with the normally closed end and the common end of the three-port fluid control valve for the sample communicated with the normally closed end, the carrier liquid flows through the carrier liquid container, the carrier liquid pump, the carrier liquid three-port fluid control valve, the sample three-way fluid connector, the sample quantitative ring, The sample uses a three-port fluid control valve, the detection three-way fluid connector, the diluter, the detection device and the waste liquid container, and the detection device measures a portion of the sample. concentration value.

The foregoing has outlined rather broadly the technical features and advantages of the present disclosure in order that the detailed description of the present disclosure that follows may be better understood. Additional technical features and advantages that form the subject of the scope of the present disclosure are described below. It should be understood by those skilled in the art to which this disclosure pertains that the concepts and specific embodiments disclosed below can be readily utilized to modify or design other structures or processes to achieve the same purposes of the present disclosure. Those skilled in the art to which the present disclosure pertains should also understand that such equivalent constructions cannot depart from the spirit and scope of the present disclosure as defined by the appended claims.

100: Fluid quantitative sampling device

200: Fluid quantitative sampling device

1: Container for carrier liquid

1A: Carrier liquid

2: Pump for carrier liquid

2A: Entrance

2B: Export

3: Three-way fluid connector for carrier liquid

3A: Terminal

3B: Terminal

3C: Terminal

4: Two-port fluid control valve for carrier liquid

4A: Terminal

4B: Terminal

5: Three-way fluid connector for detection

5A: terminal

5B: Terminal

5C: Terminal

6: Diluter

6A: terminal

6B: Terminal

7: Testing equipment

7A: Terminal

7B: Terminal

8: Two-port fluid control valve for sample

8A: terminal

8B: Terminal

9: Two-port fluid control valve for detection

9A: terminal

9B: terminal

10: Container for waste liquid

11: Three-way fluid connector for sample

11A: Terminal

11B: Terminal

11C: Terminal

12: Sample dosing circle

12A: terminal

12B: Terminal

13: Three-way fluid connector for recycling

13A: Terminal

13B: Terminal

13C: Terminal

14: Pump for sampling

14A: Entrance

14B: Export

15: Two-port fluid control valve for recycling

15A: terminal

15B: Terminal

16: Containers for samples

17: Containers for recycling

18: Three-port fluid control valve for carrier liquid

18A: Common terminal

18B: Normally connected terminal

18C: Normally no connection

19: Three-port fluid control valve for samples

19A: Common terminal

19B: Normally connected terminal

19C: Normally no connection

F1: flow direction

F2: flow direction

F3: flow direction

F4: flow direction

F5: flow direction

F6: Flow direction

P1: Pipeline

P2: Pipeline

P3: Pipeline

P4: Pipeline

P5: Pipeline

P6: Pipeline

P7: Pipeline

P8: Pipeline

P9: Pipeline

P10: Pipeline

P11: Pipeline

P12: Pipeline

P13: Pipeline

P14: Pipeline

P15: Pipeline

P16: Pipeline

P17: Pipeline

FIG. 1 is a schematic block diagram of the structure of a first embodiment of a two-port fluid control valve combination used in the quantitative fluid sampling device of the present invention.

FIG. 2 is a block schematic diagram of the first embodiment of the fluid quantitative sampling device of the present invention using a combination of two-port fluid control valves in a sampling state.

FIG. 3 is a block diagram showing the first embodiment of the fluid quantitative sampling device of the present invention using a combination of two-port fluid control valves in a detection state.

4 is a schematic block diagram showing the structure of a second embodiment of a three-port fluid control valve combination used in the quantitative fluid sampling device of the present invention.

FIG. 5 is a block schematic diagram of the second embodiment of the fluid quantitative sampling device of the present invention using a combination of three-port fluid control valves in a sampling state.

6 is a schematic block diagram of the second embodiment of the fluid quantitative sampling device of the present invention using a combination of three-port fluid control valves in a detection state.

The specific embodiments of the present invention will be described in detail below in conjunction with specific circumstances.

Referring to FIG. 1 , a fluid quantitative sampling device 100 according to the first embodiment of the present invention includes a carrier liquid container 1 , at least one carrier liquid pump 2 , at least one carrier liquid two-port fluid control valve 4 , a Detection equipment 7, at least one sampling pump 14, at least one sample two-port fluid control valve 8, at least one detection two-port fluid control valve 9, at least one recovery two-port fluid control valve 15, at least one carrier fluid control valve Three-way fluid connector 3, at least one sample three-way fluid connector 11, at least one detection three-way fluid connector 5, at least one recovery three-way fluid connector 13, at least one sample loop 12, a waste liquid container 10, A container 16 for samples and a container 17 for recovery; the quantity of each component is changed according to actual needs, and is not limited to this.

Use fluid control valves (i.e. two-port fluid control valve 4 for carrier liquid, two-port fluid control valve 8 for sample, two-port fluid control valve 9 for detection, and two-port fluid control valve 15 for recovery) to control the pump (i.e. The flow direction of the fluid driven by the liquid pump 2 and the sampling pump 14), and then complete the functions of quantitative sampling of the fluid and delivery to the detection instrument. If the sample needs to be concentrated, a concentrator can be installed; if the sample needs to be diluted, a diluter 6 can be installed.

The inlet 2A of the carrier liquid pump 2 is connected to the carrier liquid container 1 containing the carrier liquid 1A through the pipeline P1, and the outlet 2B of the carrier liquid pump 2 is connected to the carrier liquid three-way fluid joint 3 through the pipeline P2. one of the ends 3A. One end 4A of the two-port fluid control valve 4 for carrier liquid is communicated with one end 3B of the three-way fluid joint 3 for carrier liquid through pipeline P3, and the other end 4B of the two-port fluid control valve 4 for carrier liquid is connected with pipeline P4 and detection. One end 5A of the three-way fluid joint 5 communicates with each other. One end 8A of the two-port fluid control valve 8 for the sample is connected to one end 3C of the three-way fluid connector 3 for the carrier liquid through the pipeline P5, and the other end 8B of the two-port fluid control valve 8 for the sample is connected to the pipeline P6 and the three-way fluid connector for the sample. One end 11A of the fluid connector 11 communicates with each other. The inlet 14A of the sampling pump 14 communicates with the sample container 16 containing the sample through the pipeline P7, and the outlet of the sampling pump 14 14B is connected to one end 11B of the three-way fluid connector 11 for the sample through the pipeline P8. One end 12A of the sample quantitative loop 12 is connected to one end 11C of the three-way fluid joint 11 for sample through a pipeline P9, and the other end 12B of the sample quantitative loop 12 is connected to one end 13A of the three-way fluid joint 13 for recovery through a pipeline P10. If the sample needs to be concentrated, the sample loop 12 can be replaced by a concentrator (not shown).

One end 15A of the two-port fluid control valve 15 for recovery is communicated with one end 13B of the three-way fluid joint 13 for recovery through pipeline P11, and the other end 15B of the two-port fluid control valve 15 for recovery is communicated with the container 17 for recovery through pipeline P12 . One end 9A of the two-port fluid control valve 9 for detection is communicated with one end 13C of the three-way fluid joint 13 for recovery through a pipeline P13, and the other end 9B of the two-port fluid control valve 9 for detection is connected to a pipeline P14 and the three-way fluid for detection. One end 5B of the joint 5 is connected. One end 6A of the diluter 6 is communicated with one end 5C of the three-way fluid joint 5 for detection through a pipeline P15, and the other end 6B of the diluter 6 is communicated with one end 7A of the detection instrument 7 through a pipeline P16. On the other hand, the other end 7B of the detection device 7 is communicated with the waste liquid container 10 through the pipeline P17.

Referring to FIGS. 1 and 2 , when the quantitative fluid sampling device 100 of this embodiment is in the sampling state, the two-port fluid control valve 8 for sample and the two-port fluid control valve 9 for detection are closed. The carrier liquid 1A will flow through the carrier liquid container 1, the carrier liquid pump 2, the carrier liquid three-way fluid connector 3, the carrier liquid two-port fluid control valve 4, the detection three-way fluid connector 5, and the diluter. 6. The detection device 7 and the waste liquid container 10 are shown in the flow direction F1 in Figure 2, and the detection device 7 can also measure the background value of the sensing element. At the same time, the sample in the sample container 16 will flow through the sample container 16, the sampling pump 14, the sample three-way fluid connector 11, the sample quantitative ring 12, the recovery three-way fluid connector 13, and the two-port fluid for recovery. The control valve 15 and the collection container 17 are in the flow direction F2 in FIG. 2 , and during the process, a certain amount of fresh sample remains in the sample dosing ring 12 .

Referring to FIG. 1 and FIG. 3 , the fluid quantitative sampling device 100 of this embodiment is transformed to In the detection state, the sampling pump 14 is closed, and the two-port fluid control valve 4 for the carrier liquid and the two-port fluid control valve 15 for the recovery are closed at the same time, then the carrier liquid 1A flows through the sample dosing ring 12, which means the carrier liquid 1A It flows through the carrier liquid container 1, the carrier liquid pump 2, the carrier liquid three-way fluid connector 3, the sample two-port fluid control valve 8, the sample three-way fluid connector 11, the sample quantitative ring 12, and the recovery The three-way fluid joint 13, the two-port fluid control valve 9 for detection, the three-way fluid joint 5 for detection, the diluter 6, the detection device 7, and the waste liquid container 10 are in the flow direction F3 in FIG. The device 7 measures a concentration value of the sample.

Please refer to FIG. 4 , a fluid quantitative sampling device 200 according to the second embodiment of the present invention includes a carrier liquid container 1 , at least one carrier liquid pump 2 , a detection device 7 , at least one sampling pump 14 , At least one three-port fluid control valve 18 for carrier liquid, at least one three-port fluid control valve 19 for sample, at least one three-way fluid connector 11 for sample, at least one three-way fluid connector 5 for detection, at least one sample dosing loop 12, a waste The liquid container 10 , a sample container 16 and a recovery container 17 ; the quantity of each component is changed according to actual needs, and is not limited thereto.

Use the fluid control valve to control the flow direction of the fluid driven by the pump, and then complete the functions of quantitative sampling of the fluid and delivery to the detection instrument. If the sample needs to be concentrated, a concentrator can be installed; if the sample needs to be diluted, a diluter 6 can be installed.

The inlet 2A of the carrier liquid pump 2 is connected to the carrier liquid container 1 containing the carrier liquid 1 through the pipeline P1, and the outlet 2B of the carrier liquid pump 2 is connected to the three-port fluid control valve 18 for the carrier liquid through the pipeline P2. common terminal 18A. The normally connected end 18B of the three-port fluid control valve 18 for the carrier liquid is connected to one end 5A of the three-way fluid joint 5 for detection through the pipeline P4, and the normally non-connected end 18C of the three-port fluid control valve 18 for the carrier liquid is connected to the pipeline P6 and the sample. One end 11A of the three-way fluid joint 11 communicates with each other. The inlet 14A of the sampling pump 14 starts with The pipeline P7 communicates with the sample container 16 containing the test sample, and the outlet 14B of the sampling pump 14 is connected to one end 11B of the three-way fluid connector 11 for the sample through the pipeline P8. One end 12A of the sample loop 12 is communicated with one end 11C of the three-way fluid joint 11 for the sample through the pipeline P9, and the other end 12B of the sample loop 12 is communicated with the common end 19A of the three-port fluid control valve 19 for the sample through the pipeline P10. If the sample needs to be concentrated, the sample loop 12 can be replaced by a concentrator (not shown).

The normally connected end 19B of the three-port fluid control valve 19 for the sample is communicated with the recovery container 17 through the pipeline P12, and the normally closed end 19C of the three-port fluid control valve 19 for the sample is connected with the pipeline P14 and one end 5B of the three-way fluid connector 5 for detection. Connected. One end 6A of the diluter 6 is communicated with one end 5C of the three-way fluid joint 5 for detection through a pipeline P15, and the other end 6B of the diluter 6 is communicated with the detection device 7 through a pipeline P16. On the other hand, the other end 7B of the detection device 7 is communicated with the waste liquid container 10 through the pipeline P17.

That is, the functions of the three-port fluid control valve 18 for the carrier liquid in the second embodiment are equivalent to the three-port fluid connector 3 for the carrier liquid, the two-port fluid control valve 4 for the carrier liquid, and the two-port fluid control valve for the sample in the first embodiment. The function of the three-port fluid control valve for sample in the second embodiment is equivalent to the two-port fluid control valve 9 for detection, the three-way fluid connector 13 for recovery, and the three-port fluid control valve for recovery in the first embodiment. Two-port fluid control valve 15.

Referring to FIGS. 4 and 5 , the quantitative fluid sampling device 200 of this embodiment is in the sampling state, that is, the common end 18A and the normally communicating end 18B of the three-port fluid control valve 18 for the carrier liquid are in communication, and the three-port fluid control valve 19 for the sample The common terminal 19A and the normally connected terminal 19B are connected, so the carrier liquid 1A will flow through the carrier liquid container 1, the carrier liquid pump 2, the carrier liquid three-port fluid control valve 18, the detection three-way fluid connector 5, the dilution The detector 6 , the detection device 7 and the waste liquid container 10 , as shown in the flow direction F4 in FIG. 5 , and the detection device 7 also measures a sensing background value. At the same time, the sample in the sample container 16 will flow through the sample container 16, the sampling pump 14, the sample three-way fluid connector 11, and the sample in sequence. The quantitative loop 12 , the three-port fluid control valve 19 for the sample and the recovery container 17 , as shown in the flow direction F5 in Figure 5; during the process, a certain amount of fresh sample will remain in the sample quantitative loop 12 .

Please refer to FIG. 4 and FIG. 6 , when the fluid quantitative sampling device 200 of this embodiment transitions to the detection state, the sampling pump 14 is turned off, and the common end 18A of the three-port fluid control valve 18 for the carrier fluid is communicated with the normally closed end 18C. , and the common end 19A of the three-port fluid control valve 19 for the sample is communicated with the normally closed end 19C, then the carrier liquid 1A flows through the sample dosing ring 12, which means that the carrier liquid 1A flows through the carrier liquid container 1, the carrier liquid 2. Three-port fluid control valve 18 for carrier liquid, three-way fluid connector 11 for sample, sample quantitative ring 12, three-port fluid control valve 19 for sample, three-way fluid connector for detection 5, diluter 6, testing equipment 7 and waste The liquid container 10 is in the flow direction F6 in Fig. 6, and a concentration value of the sample is measured by the detection device 7.

With the above structure, the fluid quantitative sampling devices 100 and 200 of the present invention use fluid control valves (that is, the three-way fluid connector 3 for carrier liquid in the first embodiment, the two-port fluid control valve 4 for carrier liquid, and the two-port fluid control valve for sample The combination of the port fluid control valve 8 and the two-port fluid control valve 9 for detection, the three-way fluid connector 13 for recovery, the two-port fluid control valve 15 for recovery, and the three-port fluid control valve 18 for carrier liquid of the second embodiment In conjunction with the three-port fluid control valve 19 for the sample, and the action of the pumps (that is, the pump 2 for the carrier liquid and the pump 14 for the sampling), the quantitative sampling function of the conventional rotary sampling valve can be achieved, and the conventional rotary sampling valve can be completely solved. Sampling valve life and leakage issues.

While the foregoing is directed to various embodiments of the present invention, other or further embodiments of the present invention may be devised without departing from the essential scope, which is defined by the following claims. Although the present invention is explained in relation to the preferred embodiments, this is not intended to limit the present invention. It should be noted that those skilled in the art can construct many other similar embodiments according to the idea of the present invention, which are all within the protection scope of the present invention.

100: Fluid quantitative sampling device

1: Container for carrier liquid

1A: Carrier liquid

2: Pump for carrier liquid

2A: Entrance

2B: Export

3: Three-way fluid connector for carrier liquid

3A: Terminal

3B: Terminal

3C: Terminal

4: Two-port fluid control valve for carrier liquid

4A: Terminal

4B: Terminal

5: Three-way fluid connector for detection

5A: terminal

5B: Terminal

5C: Terminal

6: Diluter

6A: terminal

6B: Terminal

7: Testing equipment

7A: Terminal

7B: Terminal

8: Two-port fluid control valve for sample

8A: terminal

8B: Terminal

9: Two-port fluid control valve for detection

9A: terminal

9B: terminal

10: Container for waste liquid

11: Three-way fluid connector for sample

11A: Terminal

11B: Terminal

11C: Terminal

12: Sample dosing circle

12A: terminal

12B: Terminal

13: Three-way fluid connector for recycling

13A: Terminal

13B: Terminal

13C: Terminal

14: Pump for sampling

14A: Entrance

14B: Export

15: Two-port fluid control valve for recycling

15A: terminal

15B: Terminal

16: Containers for samples

17: Containers for recycling

18: Three-port fluid control valve for carrier liquid

18A: Common terminal

18B: Normally connected terminal

18C: Normally no connection

19: Three-port fluid control valve for samples

19A: Common terminal

19B: Normally connected terminal

19C: Normally no connection

F1: flow direction

F2: flow direction

F3: flow direction

P1: Pipeline

P2: Pipeline

P3: Pipeline

P4: Pipeline

P5: Pipeline

P6: Pipeline

P7: Pipeline

P8: Pipeline

P9: Pipeline

P10: Pipeline

P11: Pipeline

P12: Pipeline

P13: Pipeline

P14: Pipeline

P15: Pipeline

P16: Pipeline

P17: Pipeline

Claims (10)

A fluid quantitative sampling device, comprising a carrier liquid container, at least one carrier liquid pump, at least one sampling pump, at least one carrier liquid two-port fluid control valve, a detection device, at least one sample two-port fluid Control valve, at least one two-port fluid control valve for detection, at least one two-port fluid control valve for recovery, at least one three-way fluid connector for carrier liquid, at least one three-way fluid connector for sample, at least one three-way fluid connector for detection , At least one recycling three-way fluid joint, at least one sample quantitative loop, a waste liquid container, a sample container and a recycling container, wherein: an inlet of the carrier liquid pump is communicated with the carrier liquid container, the carrier liquid is An outlet of the carrier liquid pump is connected to a first end of the carrier liquid three-way fluid joint, and a first end of the carrier liquid two-port fluid control valve is connected to a second end of the carrier liquid three-way fluid joint. A second end of the two-port fluid control valve for the carrier fluid communicates with a first end of the three-way fluid connector for detection, and a first end of the two-port fluid control valve for the sample communicates with the three-way fluid connector for the carrier fluid. A third end of the fluid joint, a second end of the two-port fluid control valve for the sample is connected to a first end of the three-way fluid joint for the sample, an inlet of the sampling pump is connected to the container for the sample, the An outlet of the pump for sampling is connected to a second end of the three-way fluid joint for the sample, a first end of the sample measuring ring is connected to a third end of the three-way fluid joint for the sample, and a third end of the three-way fluid joint for the sample is connected. The second end communicates with a first end of the three-way fluid joint for recovery; and a first end of the two-port fluid control valve for recovery communicates with a second end of the three-way fluid joint for recovery. A second end of the two-port fluid control valve is connected to the recovery container, a first end of the two-port fluid control valve for detection is connected to a third end of the three-way fluid joint for recovery, and the two-port fluid control valve for detection is connected to a third end. A second end of the detection three-way fluid connector is connected to a second A third end of the detection three-way fluid joint is connected to a first end of the detection device, and a second end of the detection device is connected to the waste liquid container. The fluid quantitative sampling device according to claim 1, further comprising a diluter, a first end of the diluter is connected to the third end of the three-way fluid joint for detection, and a second end of the diluter is connected to the The first end of the device is detected, and the carrier liquid container holds a carrier liquid, and the sample container holds a sample. The fluid quantitative sampling device according to claim 2, wherein, in a sampling state, when the two-port fluid control valve for the sample and the two-port fluid control valve for the detection are closed, the fluid in the carrier liquid container is closed. The carrier liquid flows through the container for the carrier liquid, the pump for the carrier liquid, the three-way fluid connector for the carrier liquid, the two-port fluid control valve for the carrier liquid, the three-way fluid connector for the detection, the diluter, The detection device and the waste liquid container are measured by the detection device to obtain a sensing background value. The fluid quantitative sampling device according to claim 3, wherein, in the sampling state, when the two-port fluid control valve for the sample and the two-port fluid control valve for the detection are closed, the sample in the sample container It flows through the sample container, the sampling pump, the sample three-way fluid connector, the sample quantitative ring, the recovery three-way fluid connector, the recovery two-port fluid control valve and the recovery container in sequence. The fluid quantitative sampling device according to claim 2, wherein, in a detection state, the sampling pump is closed, and the two-port fluid control valve for carrier liquid and the two-port fluid control valve for recovery are closed at the same time valve, the carrier liquid flows through the carrier liquid container, the carrier liquid pump, the carrier liquid three-way fluid connector, the sample two-port fluid control valve, the sample three-way fluid connector, the The sample quantitative ring, the three-way fluid joint for the recovery, the two-port fluid control valve for the detection, The detection three-way fluid connector, the diluter, the detection device and the waste liquid container send the sample to the detection device, and the detection device measures a concentration value of the sample. A fluid quantitative sampling device, comprising a container for carrier liquid, at least one pump for carrier liquid, a detection device, at least one pump for sampling, at least one three-port fluid control valve for carrier liquid, and at least one three-port fluid control valve for sample , At least one sample three-way fluid connector, at least one detection three-way fluid connector, at least one sample quantitative loop, a waste liquid container, a sample container and a recycling container, wherein: the carrier liquid uses a pump of the The inlet is connected to the container for the carrier liquid, an outlet of the pump for the carrier liquid is connected to a common end of the three-port fluid control valve for the carrier liquid, and a normally connected end of the three-port fluid control valve for the carrier liquid is connected to the detection three-way A first end of the fluid connector, a normally blocked end of the three-port fluid control valve for the carrier liquid is connected to a first end of the three-way fluid connector for the sample, an inlet of the sampling pump is connected to the sample container, and the sample is connected to the sample container. An outlet of the pump for sampling is connected to a second end of the three-way fluid joint for the sample, a first end of the sample measuring ring is connected to a third end of the three-way fluid joint for the sample, and a third end of the three-way fluid joint for the sample is connected. The second end communicates with a common end of the three-port fluid control valve for the sample; and a normally connected end of the three-port fluid control valve for the sample communicates with the recovery container, and the sample uses a normally closed end of the three-port fluid control valve to communicate with the detection With a second end of the three-way fluid joint, a third end of the three-way fluid joint for detection is connected to a first end of the detection device, and a second end of the detection device is connected to the waste liquid container. The quantitative fluid sampling device according to claim 6, further comprising a diluter, a first end of the diluter is connected to the third end of the three-way fluid joint for detection, and a second end of the diluter is connected to the The first end of the detection device, and the carrier liquid container holds a carrier liquid, and the sample is The container holds a sample. The fluid quantitative sampling device according to claim 7, wherein, in a sampling state, the common end of the three-port fluid control valve for the carrier fluid communicates with the normally communicating end, and the common end of the three-port fluid control valve for the sample communicates with the common end of the three-port fluid control valve for the sample. The carrier liquid flows through the carrier liquid container, the carrier liquid pump, the carrier liquid three-port fluid control valve, the detection three-way fluid joint, the diluter, The detection device and the waste liquid container are measured by the detection device to obtain a sensing background value. The fluid quantitative sampling device according to claim 8, wherein, in the sampling state, the common end of the three-port fluid control valve for the carrier fluid communicates with the normally closed end and the common end of the three-port fluid control valve for the sample The normally closed ends are connected, and the sample in the sample container sequentially flows through the sample container, the sampling pump, the sample three-way fluid connector, the sample loop, and the sample three-port fluid control valve and the recycling container. The quantitative fluid sampling device according to claim 7, wherein, in a detection state, the sampling pump is closed, and the common end of the three-port fluid control valve for the carrier fluid is communicated with the normally closed end, and The common end of the three-port fluid control valve for the sample is communicated with the normally closed end, and the carrier liquid flows through the container for the carrier liquid, the pump for the carrier liquid, the three-port fluid control valve for the carrier liquid, and the sample in sequence. Use a three-way fluid connector, the sample quantitative loop, a three-port fluid control valve for the sample, a three-way fluid connector for the detection, the diluter, the detection device and the waste liquid container to send the sample to the detection device, And a concentration value of the sample is measured by the detection device.

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