Liquid detection device

Abstract

The utility model discloses a liquid detection device, include: multichannel selector valve group, gas source and a plurality of liquid bottles, multichannel selector valve group's gas inlet is connected with gas source through the air inlet pipe, and multichannel selector valve group's a plurality of gas outlets are respectively sealedly connected with corresponding liquid bottle through the air outlet pipe, the liquid inlet of a plurality of liquid outlet pipes is embedded in the corresponding liquid bottle respectively, and the liquid outlet of liquid outlet pipe is located above the mixing cup, drop counting sensor is located between the liquid outlet of liquid outlet pipe and mixing cup, and detection cell subassembly is connected with mixing cup through a transmission pipe, and is installed with a valve on this transmission pipe, the gas outlet of air outlet pipe and liquid bottle connection is located above the liquid level in liquid bottle, and the liquid inlet of liquid outlet pipe is located below the liquid level in liquid bottle. The utility model has high quantitative precision and keeps stable quantitative precision performance after long -term repeated use, also avoided the pollution to liquid, without any liquid interference, need not to clean, and low cost, low failure, promote sampling speed and detection precision.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to a liquid detection device. Background Technology

[0002] With urbanization and industrialization, the testing of liquids is becoming increasingly widespread, for example, in water pollution and pharmaceutical applications. As societal environmental awareness grows, the demand for efficient and accurate water quality testing and liquid testing in production continues to increase. Currently, most instruments on the market combine peristaltic pumps and syringe pumps, metering tubes, level sensors, and multi-port water valve control systems. This system is slow, consumes a large amount of reagents, is costly, prone to failure, has short lifespans of core components, relatively low cost-effectiveness, a high probability of contamination, and its accuracy and stability deteriorate over time. Summary of the Invention

[0003] The purpose of this invention is to provide a liquid detection device that has high quantitative accuracy and maintains stable quantitative accuracy after long-term repeated use. It also avoids liquid contamination, has no liquid cross-contamination interference, requires no cleaning, has low cost and low failure rate, and improves sampling speed and detection accuracy.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a liquid detection device, comprising: a multi-channel selector valve group, a gas source and several liquid bottles, wherein the air inlet of the multi-channel selector valve group is connected to the gas source through an air inlet pipe, and several air outlets of the multi-channel selector valve group are respectively sealed and connected to the corresponding liquid bottles through several air outlet pipes.

[0005] Several outlet tubes each have their own inlet embedded in the corresponding liquid bottle, and the outlet of the outlet tube is located above the mixing cup;

[0006] A water droplet counting sensor is located between the liquid outlet of the liquid outlet tube and the mixing cup;

[0007] The detection pool assembly is connected to the mixing cup via a transfer pipe, on which a valve is installed.

[0008] A negative pressure pump is connected to the detection pool assembly through the multi-channel selection valve group. The outlet of the gas outlet pipe connected to the liquid bottle is located above the liquid surface in the liquid bottle, and the inlet of the liquid outlet pipe is located below the liquid surface in the liquid bottle.

[0009] The following are further improvements to the above technical solution:

[0010] 1. In the above scheme, the multi-channel selector valve group is also connected to an air pump and a pressure sensor.

[0011] 2. In the above scheme, the multi-channel selection valve group is a multi-channel solenoid valve group.

[0012] 3. In the above scheme, the mixing cup is located above the liquid bottle.

[0013] 4. In the above scheme, a large tube is installed on the outlet tube located between the liquid bottle and the mixing cup.

[0014] 5. In the above scheme, the plurality of liquid bottles include at least one reagent bottle, a cleaning solution bottle, and a water bottle.

[0015] 6. In the above scheme, the valve is a two-way valve.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. This utility model relates to a liquid detection device. Several air outlets of a multi-channel selector valve assembly are sealed to corresponding liquid bottles via air outlet pipes. The inlets of several outlet pipes are embedded in their respective liquid bottles, with the outlets located above the mixing cup. A droplet counting sensor is located between the outlet of the outlet pipe and the mixing cup. A detection cell assembly is connected to the mixing cup via a transmission pipe equipped with a valve. The valve controls the air pressure in each pipe to blow air into the liquid bottle, eliminating the need for the liquid to pass through the valve. This precise quantitative delivery of liquid to the mixing cup reduces the number of pipes the liquid passes through. The droplet counting sensor accurately counts the number of droplets, providing high quantitative accuracy. Even after long-term repeated use, the quantitative accuracy remains stable, preventing contamination of the liquid in the bottle. There is no cross-contamination, no need for cleaning, low cost, low failure rate, and improved sampling speed. Furthermore, the pressure sensor and droplet counting sensor precisely control the droplet size and consistency, further improving quantitative accuracy, eliminating reagent waste, reducing reagent consumption, and minimizing waste discharge.

[0018] 2. The liquid detection device of this utility model has a negative pressure pump connected to the detection pool assembly through a multi-channel selector valve group. The negative pressure pump quickly draws the liquid in the mixing cup into the detection pool assembly, which improves efficiency and can also provide motive bubbles to accelerate the mixing or reaction speed, further shortening the detection cycle. In addition, a large tube is provided on the liquid outlet pipe between the liquid bottle and the mixing cup 6 to avoid introducing air bubbles and affecting the accuracy of the detection. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the liquid detection device of this utility model.

[0020] In the attached diagrams: 1. Multi-channel selector valve assembly; 2. Gas source; 3. Liquid bottle; 31. Reagent bottle; 32. Cleaning solution bottle; 33. Clean water bottle; 4. Gas outlet pipe; 5. Liquid outlet pipe; 6. Mixing cup; 7. Water droplet counting sensor; 8. Detection cell assembly; 9. Transfer pipe; 10. Valve; 11. Large tube; 12. Air pump; 13. Pressure sensor; 14. Negative pressure pump. Detailed Implementation

[0021] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0022] Example 1: A liquid detection device includes: a multi-channel selector valve group 1, an air source 2, and several liquid bottles 3. The air inlet of the multi-channel selector valve group 1 is connected to the air source 2 through an air inlet pipe, and several air outlets of the multi-channel selector valve group 1 are respectively sealed to the corresponding liquid bottles 3 through several air outlet pipes 4.

[0023] Several liquid outlet pipes 5 each have their own inlet embedded in the corresponding liquid bottle 3, and the outlet of the liquid outlet pipe 5 is located above the mixing cup 6;

[0024] The water droplet counting sensor 7 is located between the outlet of the liquid outlet pipe 5 and the mixing cup 6;

[0025] The detection pool assembly 8 is connected to the mixing cup 6 via a transfer pipe 9, and a valve 10 is installed on this transfer pipe 9.

[0026] A negative pressure pump 14 is connected to the detection pool assembly 8 through the multi-channel selection valve group 1. The outlet of the air pipe 4 connected to the liquid bottle 3 is located above the liquid surface in the liquid bottle 3, and the inlet of the liquid pipe 5 is located below the liquid surface in the liquid bottle 3.

[0027] The multi-channel selection valve group 1 mentioned above can be a combination of multiple single-channel valves, or a combination of multiple single-channel valves using a multi-channel pipe, or a single-channel valve used alone, or multiple channels used alone. The number of channels in the multi-channel selection valve group 1 is not limited.

[0028] The aforementioned multi-channel selector valve group 1 is a multi-channel solenoid valve group.

[0029] The aforementioned mixing cup 6 is located above the liquid bottle 3.

[0030] A large tube 11 is provided on the outlet pipe 5 located between the liquid bottle 3 and the mixing cup 6 to prevent the introduction of air bubbles.

[0031] The aforementioned liquid bottles 3 include at least one reagent bottle 31, a cleaning solution bottle 32, and a water bottle 33.

[0032] Example 2: A liquid detection device includes: a multi-channel selector valve group 1, an air source 2, and several liquid bottles 3. The air inlet of the multi-channel selector valve group 1 is connected to the air source 2 through an air inlet pipe, and several air outlets of the multi-channel selector valve group 1 are respectively sealed to the corresponding liquid bottles 3 through several air outlet pipes 4.

[0033] Several liquid outlet pipes 5 each have their own inlet embedded in the corresponding liquid bottle 3, and the outlet of the liquid outlet pipe 5 is located above the mixing cup 6;

[0034] The water droplet counting sensor 7 is located between the outlet of the liquid outlet pipe 5 and the mixing cup 6;

[0035] The detection pool assembly 8 is connected to the mixing cup 6 via a transfer pipe 9, and a valve 10 is installed on this transfer pipe 9.

[0036] A negative pressure pump 14 is connected to the detection pool assembly 8 through the multi-channel selection valve group 1. The outlet of the air pipe 4 connected to the liquid bottle 3 is located above the liquid surface in the liquid bottle 3, and the inlet of the liquid pipe 5 is located below the liquid surface in the liquid bottle 3.

[0037] The aforementioned multi-channel selector valve group 1 is a multi-channel solenoid valve group.

[0038] The aforementioned mixing cup 6 is located above the liquid bottle 3.

[0039] The aforementioned liquid bottles 3 include at least one reagent bottle 31, a cleaning solution bottle 32, and a water bottle 33.

[0040] The valve mentioned above is a two-way valve.

[0041] When using the above-mentioned liquid detection device, the air pressure of each pipeline is controlled by the air valve to blow air into the liquid bottle. The liquid does not need to pass through the valve, and the liquid is accurately and quantitatively delivered into the mixing cup. All liquids do not need to pass through the valve, and the number of pipelines through which the liquid passes is reduced. The droplet counting sensor accurately calculates the number of droplets, with high quantitative accuracy. The quantitative accuracy remains stable after long-term repeated use, and it also avoids contamination of the liquid in liquid bottle 3. There is no liquid cross-contamination interference, no need for cleaning, low cost, low failure rate, and improved sampling speed. Furthermore, it accurately controls the size and consistency of droplets through the pressure sensor and droplet counting sensor, further improving quantitative accuracy, eliminating reagent waste, reducing reagent consumption, and reducing waste discharge.

[0042] Furthermore, its negative pressure pump is connected to the detection pool assembly through a multi-channel selection valve group. The negative pressure pump quickly draws the liquid in the mixing cup into the detection pool assembly, which improves efficiency and can also provide kinetic bubbles to accelerate the mixing or reaction speed, further shortening the detection cycle. In addition, a large tube is provided on the liquid outlet pipe between the liquid bottle and the mixing cup 6 to avoid introducing air bubbles and affecting the accuracy of the detection.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A liquid detection device, characterized in that: include: The multi-channel selector valve group (1), the gas source (2) and several liquid bottles (3) are provided. The air inlet of the multi-channel selector valve group (1) is connected to the gas source (2) through the air inlet pipe, and several air outlets of the multi-channel selector valve group (1) are respectively sealed to the corresponding liquid bottles (3) through several air outlet pipes (4). Several liquid outlet tubes (5) have their respective inlets embedded in the corresponding liquid bottles (3), and the outlets of the liquid outlet tubes (5) are located above the mixing cup (6); A water droplet counting sensor (7) is located between the outlet of the liquid outlet pipe (5) and the mixing cup (6); The detection pool assembly (8) is connected to the mixing cup (6) via a transfer pipe (9), on which a valve (10) is installed. A negative pressure pump (14) is connected to the detection pool assembly (8) through the multi-channel selection valve group (1). The outlet of the air pipe (4) connected to the liquid bottle (3) is located above the liquid surface in the liquid bottle (3), and the inlet of the liquid pipe (5) is located below the liquid surface in the liquid bottle (3).

2. The liquid detection device according to claim 1, characterized in that: The multi-channel selector valve group (1) is also connected to an air pump (12) and a pressure sensor (13).

3. The liquid detection device according to claim 1 or 2, characterized in that: The multi-channel selector valve group (1) is a multi-channel solenoid valve group.

4. The liquid detection device according to claim 1 or 2, characterized in that: The mixing cup (6) is located above the liquid bottle (3).

5. The liquid detection device according to claim 1 or 2, characterized in that: A large tube (11) is provided on the outlet tube (5) located between the liquid bottle (3) and the mixing cup (6).

6. The liquid detection device according to claim 1 or 2, characterized in that: The plurality of liquid bottles (3) include at least one reagent bottle (31), a cleaning solution bottle (32), and a water bottle (33).

7. The liquid detection device according to claim 1 or 2, characterized in that: The valve (10) is a two-way valve.

Images