Laboratory organic solvent PH value detection stabilizing device

Abstract

The utility model discloses an organic solvent PH value detection stabilizing device for laboratory, which comprises a transparent box body, a stirrer, an acidimeter and an automatic titrator, the transparent box body is provided with a nitrogen inlet and a waste gas outlet, the stirrer is arranged in the transparent box body, an organic solvent container is arranged above the stirrer, and the organic solvent container is provided with a water inlet and a water outlet. The automatic titrator is suspended above the organic solvent container, and the acidity meter is arranged in an organic solvent in the organic solvent container. The device is low in cost, easy to manufacture, movable, safe and reliable. The device not only can be used for measuring the pH value of an organic solution, but also can be applied to other detection items with similar requirements according to the principle to make proper adjustment, and the overall principle is the same.

Description

Technical Field

[0001] The utility model relates to the technical field of pH value detection devices, in particular to a pH value detection and stabilization device for organic solvents used in laboratories. Background Art

[0002] In the laboratory, it is often necessary to test the pH value of liquid samples. Most liquid samples are aqueous solutions, which have relatively stable physical properties and are easy to test to obtain reliable and true results. However, sometimes it is also necessary to test the pH value of organic phase solutions (such as the fatty acid value of grains, which is usually extracted and tested using volatile organic reagents). Conventional methods are all operated under ventilated natural environment conditions. The generally volatile characteristics of organic solutions lead to unstable test results. At the same time, during the titration process, they are easily affected by carbon dioxide in the air, resulting in high test results. Therefore, a device is needed to solve the impact of volatility and the dissolution of carbon dioxide in the air on the accuracy and stability of the test results when measuring the pH value of organic phase solutions. Utility Model Content

[0003] The utility model aims to provide a laboratory organic solvent pH value detection stabilization device to solve the technical problem of unstable results when measuring pH value of organic solvent in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a laboratory organic solvent pH value detection and stabilization device, comprising a transparent box, a stirrer, an acidity meter and an automatic titrator, wherein the transparent box is provided with a nitrogen inlet and a waste gas outlet, the stirrer is placed in the transparent box, an organic solvent container is arranged above the stirrer, the automatic titrator is suspended above the organic solvent container, and the acidity meter is placed in the organic solvent in the organic solvent container.

[0006] Furthermore, the transparent box is made of acrylic material, and a door is provided on the side of the transparent box, and the sealing of the transparent box is achieved by closing the door.

[0007] Furthermore, the stirrer is a magnetic stirrer, and the solvent and the titration solution are uniformly mixed by the magnetic stirrer.

[0008] Furthermore, one end of the exhaust gas outlet is connected to an exhaust gas recovery bottle through a pipeline.

[0009] Furthermore, one end of the nitrogen inlet is connected to a nitrogen bottle through a pipeline.

[0010] Furthermore, a bracket is fixed in the transparent box, and the bracket is in an inverted T shape. One end of the bracket is fixed to the transparent box by screws, and the other two ends of the bracket are provided with rubber clamps, and the rubber clamps are used to fix the automatic titrator and the acidity meter.

[0011] Based on the above technical solution, the embodiment of the utility model can at least produce the following technical effects:

[0012] The utility model provides a laboratory organic solvent pH value detection and stabilization device, which is low in cost, easy to make, movable, safe and reliable. The device can not only measure the pH value of organic solutions, but also be applied to other detection items with similar requirements based on this principle, making appropriate adjustments, and the overall principle is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] In the figure: 1. Transparent box; 2. Agitator; 3. Acidity meter; 4. Automatic titrator; 5. Nitrogen inlet; 6. Waste gas outlet; 7. Box door; 8. Waste gas recovery bottle. DETAILED DESCRIPTION

[0016] The following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0017] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0018] The utility model provides a laboratory organic solvent pH value detection and stabilization device, comprising a transparent box 1, a stirrer 2, an acidity meter 3 and an automatic titrator 4, wherein the transparent box 1 is provided with a nitrogen inlet 5 and an exhaust gas outlet 6, the stirrer 2 is placed in the transparent box 1, an organic solvent container is arranged above the stirrer 2, the automatic titrator 4 is suspended above the organic solvent container, and the acidity meter 3 is placed in the organic solvent in the organic solvent container.

[0019] In this embodiment, the transparent box 1 is made of acrylic material, and a box door 7 is provided on the side of the transparent box 1. The sealing of the transparent box 1 is achieved by closing the box door 7.

[0020] In this embodiment, the stirrer 2 is a magnetic stirrer, and the solvent and the titration solution are uniformly mixed by the magnetic stirrer.

[0021] In this embodiment, one end of the waste gas outlet 6 is connected to a waste gas recovery bottle 8 through a pipeline.

[0022] In this embodiment, one end of the nitrogen inlet 5 is connected to a nitrogen bottle through a pipeline.

[0023] In this embodiment, a bracket is fixed in the transparent box, and the bracket is in an inverted T shape. One end of the bracket is fixed to the transparent box by screws, and the other two ends of the bracket are provided with rubber clamps, and the rubber clamps are used to fix the automatic titrator and the acidity meter.

[0024] The actual operation of the utility model device is as follows:

[0025] 1. Place the acidity meter 3, automatic titrator 4, nitrogen bottle, and waste gas recovery bottle Figure 1 Placed and connected with the transparent box 1;

[0026] 2. Place the magnetic stirrer 2 into the transparent box 1, close the box door 7, turn on the nitrogen source for ventilation, and replace the air in the transparent box 1 for more than 3 to 5 minutes.

[0027] 3. While keeping nitrogen flowing, open the door 7, put in the container of organic solution to be tested, quickly close the door 7, continue to flow nitrogen for 2 to 3 minutes and then close it.

[0028] 4. Turn on the magnetic stirrer, the acidity meter 3, and the automatic titrator 4, and titrate and measure the pH value of the organic solution according to the method for testing the sample.

[0029] 5. After the test is completed, turn off the acidity meter 3, the magnetic stirrer, etc., take out the organic solution container, and perform special recovery treatment on the organic solution and the solution in the waste gas recovery bottle 8.

[0030] The structures, functions and connection forms disclosed in this article can be implemented in other ways. For example, the embodiments described above are only exemplary, for example, multiple components can be combined or integrated into another component; in addition, each functional component in each embodiment of this article can be integrated into one functional component, or each functional component can exist physically separately, or two or more functional components can be integrated into one functional component.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A laboratory organic solvent pH value detection and stabilization device, characterized in that: The invention comprises a transparent box (1), a stirrer (2), an acidity meter (3) and an automatic titrator (4); the transparent box (1) is provided with a nitrogen inlet (5) and an exhaust gas outlet (6); the stirrer (2) is placed in the transparent box (1); an organic solvent container is provided above the stirrer (2); the automatic titrator (4) is suspended above the organic solvent container; and the acidity meter (3) is placed in the organic solvent in the organic solvent container.

2. The laboratory organic solvent pH value detection and stabilization device according to claim 1, characterized in that: The transparent box (1) is a box made of acrylic material. A box door (7) is provided on the side of the transparent box (1). The transparent box (1) is sealed by closing the box door (7).

3. The laboratory organic solvent pH value detection and stabilization device according to claim 1, characterized in that: The stirrer (2) is a magnetic stirrer, which is used to achieve uniform mixing of the solvent and the titration solution.

4. The laboratory organic solvent pH value detection and stabilization device according to claim 1, characterized in that: One end of the waste gas outlet (6) is connected to a waste gas recovery bottle (8) via a pipeline.

5. The laboratory organic solvent pH value detection and stabilization device according to claim 1, characterized in that: One end of the nitrogen inlet (5) is connected to a nitrogen bottle via a pipeline.

6. The laboratory organic solvent pH value detection and stabilization device according to claim 1, characterized in that: A bracket is also fixed in the transparent box (1), the bracket is in an inverted T shape, one end of the bracket is fixed to the transparent box (1) by means of screws, and the other two ends of the bracket are provided with rubber clamps, the rubber clamps being used to fix the automatic titrator and the acidity meter.

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