Automatic water sample dilution device

Abstract

The utility model provides a kind of water sample automatic dilution device, including diaphragm pump, four-way control valve, water sample bottle, diluent bottle, inert gas bottle, mixing bottle and liquid outlet pipe;The present application is through the cooperative work of control diaphragm pump and four-way control valve, automatically complete the whole process of liquid suction, delivery and mixing, completely abandon the cumbersome error-prone manual operation, substantially improve the efficiency and consistency of dilution work, especially applicable to the processing of large quantities of samples, creatively utilize the same diaphragm pump to introduce inert gas to the solution in mixing bottle aeration stirring, this way mixing intensity is big, fast, effect uniform and thorough, far superior to gentle magnetic stirring, especially applicable to viscous liquid or need fast mixing scene, solve the problem that traditional dilution device mixes and relies on external device, effect is not good.

Description

Technical Field

[0001] This utility model relates to the field of water sample dilution, and in particular to an automatic water sample dilution device. Background Technology

[0002] Water sample dilution is a common operation in environmental monitoring, water quality analysis, and laboratory testing. Its accuracy and efficiency directly affect the accuracy of subsequent test results. Traditional dilution methods mostly rely on manual operation, which has the following problems:

[0003] 1. Low level of automation: It requires manual measurement of diluent and sample, and mixing by titration or pouring. The operation is cumbersome and prone to human error, making it difficult to control the dilution accuracy.

[0004] 2. Poor mixing effect: Ordinary dilution devices only achieve mixing through mechanical stirring, which makes it difficult to ensure uniform liquid distribution. Especially when the sample volume is small or the viscosity is high, local uneven concentration is likely to occur. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the aforementioned problems in the prior art, this utility model provides an automatic water sample dilution device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] An automatic water sample dilution device includes a diaphragm pump, a four-way control valve, a water sample bottle, a diluent bottle, an inert gas bottle, a mixing bottle, and a dispensing tube;

[0010] The feed end of the diaphragm pump is connected to the four-way control valve via a pipeline;

[0011] The other three inlet ports of the four-way control valve are respectively connected to the water sample bottle, the diluent bottle, and the inert gas bottle via pipelines;

[0012] The discharge end of the diaphragm pump is connected to the liquid outlet pipe;

[0013] The outlet tube extends into the mixing bottle.

[0014] Preferably, the distance between the bottom end of the outlet tube and the bottom of the inner wall of the mixing bottle is 0.2 to 1 cm.

[0015] Preferably, flow meters are installed on the pipelines connecting the four-way control valve to the water sample bottle and the diluent bottle, and the flow meters, the diaphragm pump, and the four-way control valve are all electrically connected to a PLC controller.

[0016] Preferably, the inert gas stored in the inert gas bottle is nitrogen.

[0017] Preferably, the mixing bottle is a narrow-necked bottle.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this utility model are as follows: By adopting the above technical solution, this application automatically completes the entire process of liquid aspiration, transportation and mixing by controlling the coordinated work of the diaphragm pump and the four-way control valve, completely eliminating the tedious and error-prone manual operation, greatly improving the efficiency and consistency of dilution work, and is particularly suitable for the processing of large batches of samples. It creatively uses the same diaphragm pump to introduce inert gas to aerate and stir the solution in the mixing bottle. This method has a high mixing intensity, fast speed and uniform and thorough effect, which is far superior to the gentle magnetic stirring. It is especially suitable for viscous liquids or scenarios that require rapid mixing, and solves the problem that traditional dilution devices rely on external devices and have poor mixing effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an automatic water sample dilution device.

[0021] [Explanation of Labels in the Attached Image]

[0022] 1. Diaphragm pump;

[0023] 2. Four-way control valve;

[0024] 3. Water sample bottle;

[0025] 4. Diluent bottle;

[0026] 5. Inert gas cylinders;

[0027] 6. Flow meter;

[0028] 7. Discharge pipe;

[0029] 8. Mixing bottle. Detailed Implementation

[0030] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Please refer to Figure 1 This utility model provides an automatic water sample dilution device, including a diaphragm pump 1, a four-way control valve 2, a water sample bottle 3, a diluent bottle 4, an inert gas bottle 5, a mixing bottle 8, and an outlet pipe 7.

[0032] The feed end of the diaphragm pump 1 is connected to the four-way control valve 2 via a pipeline;

[0033] The other three inlet ports of the four-way control valve 2 are respectively connected to the water sample bottle 3, the diluent bottle 4, and the inert gas bottle 5 through pipelines;

[0034] The discharge end of the diaphragm pump 1 is connected to the liquid outlet pipe 7;

[0035] The liquid outlet pipe 7 extends into the mixing bottle 8;

[0036] In use, the sample bottle 3 is connected to the diaphragm pump 1 via the four-way control valve 2, and the sample water in the sample bottle 3 is transported to the mixing bottle 8. Then, the diluent bottle 4 is connected to the diaphragm pump 1 via the four-way control valve 2, and the diaphragm pump 1 transports the diluent in the diluent bottle 4 to the mixing bottle 8. Finally, the inert gas bottle 5 is connected to the diaphragm pump 1 via the four-way control valve 2, and the inert gas is transported to the mixture in the mixing bottle 8 to achieve the function of aeration and mixing, thereby realizing the automation of the dilution and mixing of sample water.

[0037] This application utilizes the characteristic of the diaphragm pump 1 that it can transport both liquids and gases to sequentially deliver sample water, diluent, and inert gas into the mixing bottle 8. Furthermore, when delivering the inert gas, it can also discharge any liquid that may remain in the pipeline, thereby improving the accuracy of subsequent dilution of the water sample.

[0038] This application automatically completes the entire process of liquid aspiration, delivery, and mixing by controlling the coordinated operation of the diaphragm pump 1 and the four-way control valve 2, completely eliminating tedious and error-prone manual operation, and greatly improving the efficiency and consistency of dilution work. It is particularly suitable for processing large batches of samples. It creatively uses the same diaphragm pump 1 to introduce inert gas to aerate and stir the solution in the mixing bottle 8. This method has a high mixing intensity, fast speed, and uniform and thorough effect, which is far superior to the gentle magnetic stirring. It is especially suitable for viscous liquids or scenarios that require rapid mixing, and solves the problem of traditional dilution devices relying on external devices and having poor mixing effects.

[0039] In this embodiment, the distance between the bottom end of the liquid outlet pipe 7 and the bottom of the inner wall of the mixing bottle 8 is 0.2 to 1 cm.

[0040] In this embodiment, flow meters 6 are installed on the pipelines connecting the four-way control valve 2 to the water sample bottle 3 and the diluent bottle 4. The flow meters 6, the diaphragm pump 1 and the four-way control valve 2 are all electrically connected to the PLC controller.

[0041] During use, the flow meter 6 determines the dosage of water sample or diluent injected into the mixing bottle 8, thereby ensuring the accuracy of dilution.

[0042] In this embodiment, the inert gas stored in the inert gas bottle 5 is nitrogen.

[0043] In this embodiment, the mixing bottle 8 is a narrow-necked bottle, so that the water splashed during the aeration process is not easily splashed out of the mixing bottle 8.

[0044] The working principle of this utility model is as follows:

[0045] The sample bottle 3 is connected to the diaphragm pump 1 via a four-way control valve 2, which delivers the sample water in the sample bottle 3 to the mixing bottle 8. Then, the diluent bottle 4 is connected to the diaphragm pump 1 via the four-way control valve 2, which delivers the diluent in the diluent bottle 4 to the mixing bottle 8. Finally, the inert gas bottle 5 is connected to the diaphragm pump 1 via the four-way control valve 2, which delivers the inert gas to the mixture in the mixing bottle 8, thus achieving the function of aeration and mixing, thereby automating the dilution and mixing of the sample water.

[0046] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0047] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic water sample dilution apparatus, characterized by comprising: Includes diaphragm pump, four-way control valve, water sample bottle, diluent bottle, inert gas bottle, mixing bottle, and outlet tube; The feed end of the diaphragm pump is connected to the four-way control valve via a pipeline; The other three inlet ports of the four-way control valve are respectively connected to the water sample bottle, the diluent bottle, and the inert gas bottle via pipelines; The discharge end of the diaphragm pump is connected to the liquid outlet pipe; The outlet tube extends into the mixing bottle.

2. The automatic water sample dilution device according to claim 1, characterized in that, The distance between the bottom end of the outlet tube and the bottom of the inner wall of the mixing bottle is 0.2 to 1 cm.

3. The automatic water sample dilution device according to claim 1, characterized in that, Flow meters are installed on the pipelines connecting the four-way control valve to the water sample bottle and the diluent bottle. The flow meters, the diaphragm pump, and the four-way control valve are all electrically connected to a PLC controller.

4. The automatic water sample dilution device according to claim 1, characterized in that, The inert gas stored in the inert gas cylinder is nitrogen.

5. The automatic water sample dilution device according to claim 1, characterized in that, The mixing bottle is a narrow-necked bottle.

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