JPH04118661U - dilution device - Google Patents

Abstract

(57) [Summary] [Purpose] To automatically dissolve various samples and prepare solutions with target dilution ratios. [Structure] A balance 12 and a control device body are provided in a dilution device body 10, and distilled water can be automatically supplied to a beaker 14 on the balance 12 via a pump 22 and a water injection pipe 20. The target dilution ratio and the required amount of diluted solution are input using the numerical input keys 26. [Effect] Enter the target dilution ratio and required solution volume,
When the drug is put into the beaker 14, the necessary amount of distilled water is automatically supplied, and a solution with a target dilution ratio is prepared. Solution preparation work is automated and analysis work efficiency is improved.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an apparatus for automatically diluting a sample to a predetermined concentration.

0002

[Conventional technology]

In recent years, instruments for analyzing liquid samples such as atomic absorption spectroscopy, emission spectroscopy, absorbance meters, and organic carbon meters have been developed. The installation became widespread. This type of analyzer uses a diluted sample solution.

0003 Traditionally, to dilute a sample, the sample is diluted using an analytical balance, volumetric pipette, etc. The method is to take a portion and dissolve it in a volumetric flask.

0004

[Problem that the idea aims to solve]

All such traditional dilution methods are done manually and require significant time and labor costs. It was on.

[0005]

[Means to solve the problem]

The diluter of the present invention includes a balance for weighing a sample to be diluted, and a diluent on the balance. A liquid supply device that supplies the dilution solvent to the dilution container, the target dilution ratio, and the dilution solution. The volume and the weight of the sample weighed on the balance are input, and the dilution is performed based on these input values. A calculation means for calculating the dilution solvent to be supplied to the container and the amount of dilution calculated by the calculation means. liquid supply control means for operating the liquid supply device to supply dilution solvent to the dilution container; It is equipped with the following.

[0006]

[Effect]

In such a diluting device of the present invention, the amount of diluted solution required and the dilution ratio are determined. After entering the information, place the sample into a dilution container such as a beaker on the balance.

[0007] Then, the required amount of solvent is supplied to a container such as a beaker, and the desired concentration is automatically achieved. A diluted solution is prepared.

[0008]

【Example】

Examples will be described below with reference to the drawings. Figure 1 relates to an embodiment of the present invention. A perspective view of the diluter, Figure 2 is a system diagram, and Figure 3 is a flowchart showing the control procedure. It is.

[0009] In FIG. 1, the sample placement part of the balance 12 is exposed on the upper surface of the diluter main body 10. A beaker 14 is placed on the upper surface of the balance 12. A distilled water container 16 is installed near the dilution device main body 10, and the device main body 10 and the A retaining water container 16 is connected through piping 18 . Inside the main body 10 of the device are shown in FIG. As shown, the distilled water in the container 16 is pumped out and poured into the beaker 14 from the water injection pipe 20. A pump 22 and piping 24 for discharging water are provided. On the front of the device main body 10 , in addition to the numerical input keys 26, an accuracy display 28, a magnification display 30, and a weight display 32. is provided. Inside the device main body 10, the measurement signal from the balance 12 is analog The numerical value is input via the digital converter 34, and the numerical value is inputted from the numerical input key 26. A control device main body 36 is provided to which a value signal is input. This control device main body 36 outputs display signals to the indicators 28, 30, and 32, and also outputs display signals to the pump drive circuit. The pump 22 is controlled via 38.

0010 This control device main body 36 is mainly composed of a microcomputer, This microcomputer itself uses the well-known ROM, RAM, CPU, and data bus. It is composed of:

[0011] Note that the numerical input keys 26 include a start key S, a required liquid amount input key W, A dilution factor input key E and a cancel key C are provided.

0012 The operation of the diluter thus constructed will be explained with reference to FIG. 3. First, when you press the start switch S, the magnification display 3 indicates that you should input the dilution ratio. Displayed as 0. Therefore, the magnification is input using the numerical input key 26. Number indicating magnification Press key E after entering the value. Then, the weight indicator 32 will display the required amount. A message appears asking you to enter the amount of liquid to be added. Therefore, use the numerical input keys 26 to input the necessary Enter the amount of solution to be used. When input is completed, press key W.

[0013] Then, the weight display 32 indicates that the sample (medicine) should be put into the beaker 14. is displayed. Therefore, it is roughly calculated from the target solution volume and dilution ratio. A rough amount of the sample is put into the beaker 14. The balance 12 is the injected drug. Weigh the weight accurately. In the control device main body 36, the dilution factor and should be poured into the beaker 14 based on the required liquid volume and this newly weighed sample weight. Calculate the amount of distilled water. After this calculation is completed, the pump 22 is activated and the calculation is performed. After pouring the same amount of distilled water into the beaker 14, the pump 22 is stopped. to this Thus, a solution having a target dilution ratio is prepared in the beaker 14.

[0014] Note that even if the pump 22 is stopped, water injection does not stop immediately; Water flows into beaker 14. Also, even if the pump 22 is activated, the water level will be constant immediately. It does not come out in quantity, but there is a delay in the rise. For this reason, Pon Even if the operating time of the pump 22 is controlled accurately, the amount of water injected into the beaker 14 may not match the target value. It will be slightly different. The balance 12 accurately weighs the amount of water injected. This water injection amount is then input into the control device main body 36. Then, in the control device main body 36 , accurately calculate the dilution ratio from the actual amount of water injected and the amount of medicine injected, Compare this calculated actual dilution ratio with the target dilution ratio input in advance, and The accuracy is displayed on the accuracy display 28.

[0015] In this way, according to the device of this embodiment, the effective value of the prepared sample solution is also calculated. be able to.

[0016] In the above example, distilled water is used as the solvent, but other liquids may be used. It is clear that it is also good.

[0017]

[Effect of the idea]

As mentioned above, according to the diluter of the present invention, the diluted solution of the desired dilution ratio can be The amount can be automatically prepared. Therefore, analysis work can be done in an extremely short time and efficiently. Be able to act efficiently.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a system diagram of the embodiment device.

FIG. 3 is a flowchart of the embodiment apparatus.

[Explanation of symbols]

10 Dilution device body 12 Balance 14 Beaker 16 Distilled water container 20 Water injection pipe 22 Pump 26 Numerical input key 36 Control device main body

Claims (1)

[Scope of utility model registration request] 1. A balance for weighing a sample to be diluted, a liquid supply device for supplying a dilution solvent toward a dilution container on the balance, a target dilution ratio, an amount of the dilution solution, and a sample to be weighed with the balance. calculation means for calculating the dilution solvent to be supplied to the dilution container based on these input values; and a calculation means for supplying the amount of dilution solvent calculated by the calculation means to the dilution container A diluting device comprising: liquid supply control means for operating a liquid device.