CN218674834U

CN218674834U - PH testing arrangement

Info

Publication number: CN218674834U
Application number: CN202221994435.9U
Authority: CN
Inventors: 朱译铭
Original assignee: Jiangsu Jiangtian Engineering Testing Co ltd
Current assignee: Jiangsu Jiangtian Engineering Testing Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-03-21
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a pH testing device, which comprises a shell and a control circuit arranged in the shell; the lower part of the shell is provided with a pH testing mechanism; the pH testing mechanism comprises an internal shell, wherein a lead is arranged at the upper end of the internal shell and is connected with a control circuit; a liquid inlet hole is formed in the middle of the inner shell; a bulb body is arranged at the lower part of the inner shell; a cavity is arranged between the inner shell and the bulb body; an inner reference electrode and an outer reference electrode which are connected with a lead are arranged in the inner shell; the inner reference electrode extends into the bulb body, and the outer reference electrode is positioned in the cavity; a potassium chloride solution is filled in the cavity, and a hydrogen chloride solution is arranged at the upper part in the bulb; the liquid inlet hole, the cavity and the bulb body are communicated. The utility model discloses practice thrift the preparation time of configuration buffer solution, realized that the pH meter integrates the characteristics that the degree is high, easy and simple to handle, measured data is accurate.

Description

PH testing arrangement

Technical Field

The utility model relates to a pH test equipment field especially relates to a pH testing arrangement.

Background

A pH meter (pH meter for short) is a common instrument and equipment mainly used for precisely measuring the pH value of a liquid medium, can measure the potential mV value of an ion electrode by matching with a corresponding ion selection electrode, and is widely applied to the fields of industry, agriculture, scientific research, environmental protection and the like. At present, pH meters of various types and specifications are widely used in the industrial field and laboratories, the basic principle is a potentiometry, most of indicating electrodes are glass electrodes, and the electrodes convert chemical quantity H + ions in a solution to be detected into measurable electric signal values through a pH sensitive glass film, so the pH electrodes are defined as electrochemical sensors sensitive to the H + ions.

The current pH meter generally comprises a housing, a control circuit, a calibration switch, an indicating device, a glass electrode, a reference electrode and a reference solution, wherein the reference electrode is immersed in the reference solution. The calibration switch is used for starting a calibration program, the control circuit is used for collecting voltage signals of the glass electrode and the reference electrode and calculating the acidity of the liquid to be measured, and the indicating device is used for displaying the acidity of the liquid to be measured.

However, the existing pH meter uses a built-in glass electrode calibration instrument and a measurement solution, and the calibration is often unsuccessful once, so that the existing pH meter needs to be subjected to repeated washing and positioning calibration, which wastes a large amount of manpower and material resources and also wastes precious time.

In view of this, the utility model develops a pH testing arrangement, has the degree of integrating height, easy and simple to handle, the accurate characteristics of measured data.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a pH testing arrangement aims at solving the problem that has current pH meter to exist among the prior art, has realized integrating the characteristics that the degree is high, easy and simple to handle, measured data are accurate.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the pH testing device comprises a shell and a control circuit arranged in the shell; the lower part of the shell is provided with a pH testing mechanism; the pH testing mechanism comprises an internal shell, wherein a lead is arranged at the upper end of the internal shell and is connected with a control circuit; a liquid inlet hole is formed in the middle of the inner shell; a bulb body is arranged at the lower part of the inner shell; a cavity is arranged between the inner shell and the bulb body; an inner reference electrode and an outer reference electrode which are connected with a lead are arranged in the inner shell; the inner reference electrode extends into the bulb body, and the outer reference electrode is positioned in the cavity; a potassium chloride solution is filled in the cavity, and a hydrogen chloride solution is arranged at the upper part in the bulb; the liquid inlet hole, the cavity and the bulb body are communicated.

As a preferred scheme of the utility model, wherein: the internal reference electrode is Ag/AgC ₁ An internal reference electrode; the external reference electrode is Ag/AgC ₁ An outer reference electrode.

As a preferred embodiment of the present invention, wherein: the inner case is an inner case made of polycarbonate resin having a thickness of 0.1-1 mm.

As a preferred embodiment of the present invention, wherein: the solution concentration of the potassium chloride solution is 3mol/L; the solution concentration of the hydrogen chloride solution is 0.1mol/L.

As a preferred embodiment of the present invention, wherein: and a sealing plastic protective sleeve for wrapping the lead is arranged at the upper end of the inner shell.

As a preferred embodiment of the present invention, wherein: a plurality of through holes are formed between the cavity and the bulb body; and each through hole is internally provided with fine-pore ceramics and a sealing glue layer for sealing.

As a preferred embodiment of the present invention, wherein: a through groove is formed between the cavity and the bulb body; and the through groove is internally provided with fine-pore ceramic and a sealing glue layer for sealing.

The utility model discloses will be used for not enough to add innovative improvement among the prior art, increase its actual result of use simultaneously.

Compared with the prior art, the utility model discloses the beneficial effect who realizes:

the utility model discloses with the ball integration in inside shell, form an integrative pH meter, simplified instrument and loaded down with trivial details procedure that the calibration process relates to a great extent, can preserve the buffer solution in the certain time, avoided every calibration once just will prepare the trouble of once, more practiced thrift the preparation time of configuration buffer solution, realized that the pH meter integrates the characteristics that the degree is high, easy and simple to handle, measured data is accurate.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

fig. 1 is a schematic cross-sectional structure diagram in an embodiment of the present invention.

In the figure: 1. a wire; 2. sealing the plastic protective sleeve; 3. a liquid inlet hole; 4. an outer reference electrode; 5. a potassium chloride solution; 6. an inner housing; 7. fine porous ceramics; 8. a bulb body; 9. sealing the adhesive layer; 10. a hydrogen chloride solution; 11. an outer reference electrode.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1. It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Example 1

As shown in fig. 1, the present invention provides a pH testing device, which comprises a housing and a control circuit installed in the housing. The control circuit comprises a circuit part, a display screen connected with the circuit part and an internal program part, which are all the prior art and are not described in detail in the patent.

And a pH testing mechanism is arranged at the lower part of the shell. The pH testing mechanism comprises an inner shell 6, a lead 1 is installed at the upper end of the inner shell 6, and the lead 1 is connected with a control circuit. The middle part of the inner shell 6 is provided with a liquid inlet hole 3. The lower part of the inner shell 6 is provided with a bulb body 8, and a cavity is arranged between the inner shell 6 and the bulb body 8.

And an inner reference electrode 4 and an outer reference electrode 11 which are connected with the lead 1 are arranged in the inner shell 6. The inner reference electrode 4 extends into the bulb, and the outer reference electrode 11 is located in the cavity. The cavity is filled with a potassium chloride solution 5, and the upper part in the bulb body is provided with a hydrogen chloride solution 10. In this embodiment, the internal reference electrode is Ag/AgC, taking into account the requirements of the actual test ₁ An internal reference electrode; the external reference electrode is Ag/AgC ₁ An outer reference electrode. The solution concentration of the potassium chloride solution is 3mol/L; the solution concentration of the hydrogen chloride solution is 0.1mol/L.

The liquid inlet hole, the cavity and the bulb body are communicated.

The inner case 6 is an inner case made of polycarbonate resin having a thickness of 0.1-1 mm. And a sealing plastic protective sleeve 2 wrapping the lead is arranged at the upper end of the inner shell 6.

The cavity is communicated with the bulb body 8 in a mode that a plurality of through holes are formed between the cavity and the bulb body 8. And a fine-pore ceramic 7 and a sealant layer 9 for sealing are arranged in each through hole.

During working, the calibration liquid enters the cavity through the liquid inlet hole, then enters the bulb body through the fine-hole ceramic, and then is stored in the bulb body. And testing the inner reference electrode and the outer reference electrode, wherein the inner reference electrode is contacted with the calibration liquid in the bulb body for testing.

Example 2

Example 2 compared to example 1, the technology differs in the way of communication between the cavity and the bulb 8.

The pH testing mechanism comprises an inner shell, wherein a lead is arranged at the upper end of the inner shell and is connected with a control circuit. And a liquid inlet hole is formed in the middle of the inner shell. The lower part of the inner shell is provided with a bulb body, and a cavity is arranged between the inner shell and the bulb body.

And an inner reference electrode and an outer reference electrode which are connected with a lead are arranged in the inner shell. The inner reference electrode extends into the bulb, and the outer reference electrode is located in the cavity. The cavity is filled with potassium chloride solution, and the upper part in the bulb body is provided with hydrogen chloride solution. In this embodiment, the internal reference electrode is Ag/AgC, taking into account the requirements of the actual test ₁ An internal reference electrode; the external reference electrode is Ag/AgC ₁ An outer reference electrode. The solution concentration of the potassium chloride solution is 3mol/L; the solution concentration of the hydrogen chloride solution is 0.1mol/L.

In the communication mode in embodiment 2, a through groove is formed between the cavity and the bulb, and fine-pore ceramic and a sealing adhesive layer for sealing are arranged in the through groove.

Elsewhere, and the entire testing process is the same.

The utility model discloses with the ball integration in inside shell, form an integrative pH meter, simplified instrument and loaded down with trivial details procedure that the calibration process related to a great extent, can preserve the buffer solution in the certain time, avoided every standardization once just will prepare the trouble of once, more practiced thrift the preparation time of configuration buffer solution, realized that the pH meter integrates the characteristics that the degree is high, easy and simple to handle, measured data is accurate.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

The pH testing device comprises a shell and a control circuit arranged in the shell;

the method is characterized in that:

the lower part of the shell is provided with a pH testing mechanism;

the pH testing mechanism comprises an internal shell, wherein a lead is arranged at the upper end of the internal shell and is connected with a control circuit; a liquid inlet hole is formed in the middle of the inner shell;

a bulb body is arranged at the lower part of the inner shell; a cavity is arranged between the inner shell and the bulb body;

an inner reference electrode and an outer reference electrode which are connected with a lead are arranged in the inner shell; the inner reference electrode extends into the bulb body, and the outer reference electrode is positioned in the cavity; a potassium chloride solution is filled in the cavity, and a hydrogen chloride solution is arranged at the upper part in the bulb;

the liquid inlet hole, the cavity and the bulb body are communicated.
2. The pH test device of claim 1, wherein: the internal reference electrode is an Ag/AgC1 internal reference electrode; the external reference electrode is an Ag/AgC1 external reference electrode.
3. The pH test device of claim 2, wherein: the inner case is an inner case made of polycarbonate resin having a thickness of 0.1-1 mm.
4. The pH test device of claim 3, wherein: the solution concentration of the potassium chloride solution is 3mol/L; the solution concentration of the hydrogen chloride solution is 0.1mol/L.
5. The pH test device of claim 4, wherein: and a sealing plastic protective sleeve for wrapping the lead is arranged at the upper end of the inner shell.
6. The pH test device of claim 5, wherein: a plurality of through holes are formed between the cavity and the bulb body; and each through hole is internally provided with fine-pore ceramics and a sealing glue layer for sealing.
7. The pH test device of claim 5, wherein: a through groove is formed between the cavity and the bulb body; the through groove is internally provided with fine-pore ceramic and a sealing glue layer for sealing.