Karl Fischer moisture meter

Abstract

The utility model relates to the field of chemical analysis and detection, and discloses a Karl-Fischer moisture meter which comprises a reaction bottle, an electrode tube and a filter screen, the reaction bottle comprises a bottle body and a bottle cap covering a bottle opening of the bottle body, the electrode tube penetrates through the bottle cap, an induction electrode extends into the bottle body, and the filter screen wraps the outer side of the induction electrode. The Karl Fischer moisture meter disclosed by the utility model is provided with the filter screen, and the filter screen wraps the outer side of the induction electrode of the electrode tube, so that floccules generated in the reaction bottle can be wound on the filter screen, the filter screen plays a role in isolation, the floccules can be effectively prevented from being wound on the induction electrode, the sensitivity of the induction electrode is ensured, and the measurement accuracy is improved. Therefore, the accuracy of test data is guaranteed, the induction electrode is prevented from being corroded by floccules, the service life of the induction electrode is prolonged, in addition, the induction electrode does not need to be cleaned frequently, and the working efficiency of the test is improved.

Description

Technical Field

[0001] The utility model belongs to the field of chemical analysis and detection, and specifically relates to a Karl Fischer moisture meter. Background Art

[0002] Karl Fischer moisture determination is a common moisture test method. It uses I2, SO2, pyridine, and anhydrous CH3OH (water content below 0.05%) to prepare reagents, and determines the water equivalent of the reagents. After the reagents react with the water in the sample, the water content in the sample is calculated by calculating the reagent consumption. The Karl Fischer titrator using this determination method can quickly analyze the moisture content of the sample, and is simple to operate and has a wide range of applications, suitable for solid, liquid and gas samples.

[0003] In the existing Karl Fischer titrator, some samples will produce flocs after being added to the reaction bottle. The flocs will entangle the sensing electrode of the electrode tube, which will reduce the sensitivity of the sensing electrode and cause inaccurate test data. In addition, the flocs will corrode the sensing electrode, resulting in a shorter service life of the sensing electrode. Frequent cleaning of the sensing electrode will also lead to low test efficiency. Utility Model Content

[0004] In view of the above-mentioned deficiencies or defects in the prior art, the utility model provides a Karl Fischer titrator, aiming to solve the technical problems in the existing Karl Fischer titrator that the sensing electrode is entangled by flocs, resulting in reduced sensitivity, short service life and frequent cleaning affecting work efficiency.

[0005] In order to achieve the above object, the utility model provides a Karl Fischer titrator, which comprises:

[0006] A reaction bottle, comprising a bottle body and a bottle cap disposed at the bottle mouth of the bottle body;

[0007] An electrode tube is inserted through the bottle cap and a sensing electrode extends into the bottle body;

[0008] The filter screen is wrapped around the outer side of the sensing electrode.

[0009] Optionally, the edge of the filter screen is gathered and fastened to the tube body of the electrode tube by a detachable fastener.

[0010] Optionally, the fastener is a clamp, which surrounds the outer side of the edge of the filter screen and tightens the edge of the filter screen onto the tube body of the electrode tube.

[0011] Optionally, the clamp is provided in plurality, and the plurality of clamps are arranged at intervals along the axial direction of the tube body of the electrode tube.

[0012] Optionally, the tube body of the electrode tube is sleeved with an elastic gasket, and the clamp surrounds the outer side of the edge of the filter screen and tightens the edge of the filter screen onto the elastic gasket.

[0013] Optionally, the filter screen is configured as a filter screen structure made of aluminum or stainless steel.

[0014] Optionally, the pore size of the filter is 0.05-0.5 mm.

[0015] Optionally, the filter screen includes a filter screen body and a support ring, the edge of the filter screen body is gathered and fastened to the tube body of the electrode tube, and the support ring is fixedly connected to the inner side or outer side of the filter screen body and surrounds the outer side of the sensing electrode at intervals.

[0016] Optionally, the axial direction of the support ring is consistent with the axial direction of the tube body of the electrode tube.

[0017] Optionally, the support ring is provided in plurality, and the plurality of support rings are arranged at intervals along the axial direction of the tube body of the electrode tube.

[0018] Through the above technical scheme, in the Karl Fischer titrator of the utility model, a filter is provided, and the filter is wrapped around the outer side of the sensing electrode of the electrode tube. In this way, the flocs generated in the reaction bottle will be entangled on the filter, and the filter plays an isolating role, which can effectively prevent the flocs from entangled with the sensing electrode, thereby ensuring the sensitivity of the sensing electrode, and then ensuring the accuracy of the test data, and also avoiding the corrosion of the sensing electrode by the flocs, thereby improving the service life of the sensing electrode. In addition, the sensing electrode does not need to be frequently cleaned, thereby improving the working efficiency of the test.

[0019] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic structural diagram of a reaction bottle portion of a Karl Fischer titrator in one embodiment of the utility model;

[0022] Figure 2 for Figure 1 A partial enlarged view of the reaction bottle of the Karl Fischer titrator;

[0023] Figure 3 It is a partial enlarged view of the reaction bottle of the Karl Fischer titrator in another embodiment of the utility model;

[0024] Figure 4 This is a partial enlarged view of the reaction bottle of a Karl Fischer titrator in another embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 100 reaction bottles

[0027] 200 Electrode tube

[0028] 201 Sensing Electrode

[0029] 300 filter

[0030] 301 filter body 302 support ring

[0031] 400 Clamp

[0032] 500 elastic washer

[0033] 600 Burette

[0034] 700 Sample input tube

[0035] 800 drain pipe DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0038] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] The utility model firstly provides a Karl Fischer titrator.

[0041] In one embodiment, referring to Figure 1 and attached Figure 2 As shown, the Karl Fischer titrator includes a reaction bottle 100, an electrode tube 200 and a filter 300. The reaction bottle 100 includes a bottle body and a bottle cap covered at the bottle mouth of the bottle body. The electrode tube 200 is inserted into the bottle cap and the sensing electrode 201 extends into the bottle body. The filter 300 is wrapped around the outside of the sensing electrode 201.

[0042] It should be noted that the Karl Fischer titrator also includes a host, and the reaction bottle 100 is arranged in the receiving slot of the host. The host structure and moisture testing principle of the Karl Fischer titrator are conventional structures well known to those skilled in the art, and therefore, they are not described in detail.

[0043] Specifically, the bottle cap of the reaction bottle 100 is also provided with a burette 600, a sample input tube 700 and a liquid discharge tube 800, the structures and functions of which are well known to those skilled in the art, and therefore, they will not be described in detail.

[0044] In the Karl Fischer titrator of this embodiment, a filter screen 300 is provided, and the filter screen 300 is wrapped around the outer side of the sensing electrode 201 of the electrode tube 200. In this way, the flocs generated in the reaction bottle will be wrapped around the filter screen 300. The filter screen 300 plays an isolating role and can effectively prevent the flocs from wrapping around the sensing electrode 201, thereby ensuring the sensitivity of the sensing electrode 201, and then ensuring the accuracy of the test data, and also avoiding the sensing electrode 201 from being corroded by the flocs, thereby improving the service life of the sensing electrode 201. In addition, the sensing electrode 201 does not need to be frequently cleaned, thereby improving the working efficiency of the test.

[0045] In this embodiment, the filter 300 can adopt a metal filter which is relatively common in the art, has a simple structure, is easy to manufacture and install, has a low manufacturing cost, and is suitable for popular use.

[0046] In one embodiment, the edge of the filter screen 300 is gathered and fastened to the tube body of the electrode tube 200 by a detachable fastener. Such a configuration makes the filter screen 300 easy to disassemble and assemble, thereby facilitating the cleaning of the filter screen 300 and effectively improving the cleaning efficiency.

[0047] In one embodiment, referring to Figure 2 As shown, the fastener is a clamp 400 , which surrounds the outer side of the edge of the filter screen 300 and tightens the edge of the filter screen 300 on the tube body of the electrode tube 200 .

[0048] It can be understood that by tightening the edge of the filter 300 on the tube body of the electrode tube 200 through the clamp 400, the filter 300 can be quickly disassembled and assembled, and the clamp 400 itself can adopt standard parts commonly used in the field, which can effectively reduce the difficulty and cost of production.

[0049] Specifically, the clamp 400 may be a plastic clamp.

[0050] In one embodiment, referring to Figure 2As shown, the clamp 400 is provided in plurality, and the plurality of clamps 400 are arranged at intervals along the axial direction of the tube body of the electrode tube 200. In this arrangement, the edges of the filter screen 300 are respectively fastened by the plurality of clamps 400, which effectively improves the reliability and stability of the fixing of the filter screen 300.

[0051] Specifically, the plurality of clamps 400 may be arranged at equal intervals along the axial direction of the tube body of the electrode tube 200 .

[0052] In one embodiment, referring to Figure 3 As shown, the tube body of the electrode tube 200 is sleeved with an elastic gasket 500, and the clamp 400 surrounds the outer side of the edge of the filter screen 300, and tightens the edge of the filter screen 300 on the elastic gasket 500. In this way, by setting the elastic gasket 500, on the one hand, the filter screen 300 can be prevented from directly contacting and abrading the tube body of the electrode tube 200, and on the other hand, the sealing between the edge of the filter screen 300 and the tube body of the electrode tube 200 can be effectively improved, and flocs can be prevented from entering the inner side of the filter screen 300 through the gap between the edge of the filter screen 300 and the tube body of the electrode tube 200, thereby being wound around the sensing electrode 201.

[0053] In one embodiment, the filter screen 300 is configured as a filter screen structure made of aluminum or stainless steel, which effectively avoids the filter screen 300 from reacting with the sample, thereby improving the reliability and accuracy of the test.

[0054] In one embodiment, the pore size of the filter screen 300 is 0.05-0.5 mm. With such a configuration, the filter screen 300 can isolate most of the floccules and has a good floccules isolation effect.

[0055] In one embodiment, referring to Figure 4 As shown, the filter screen 300 includes a filter screen body 301 and a support ring 302. The edge of the filter screen body 301 is gathered and fastened to the tube body of the electrode tube 200. The support ring 302 is fixedly connected to the inner side or outer side of the filter screen body 301 and surrounds the outer side of the sensing electrode 201 at intervals. In this way, the support ring 302 supports the filter screen body 301, so that the filter screen body 301 and the sensing electrode 201 can be kept separated, and the flocs wrapped around the filter screen body 301 are prevented from contacting the sensing electrode 201. At the same time, the convenience of installing the filter screen 300 on the electrode tube 200 is also improved.

[0056] It can be understood that the support ring 302 is a rigid structure, thereby playing a role in supporting and retaining the filter body 301 .

[0057] In one embodiment, referring to Figure 4As shown, the axial direction of the support ring 302 is consistent with the axial direction of the tube body of the electrode tube 200. This arrangement can ensure that there is a large gap between the filter body 301 and the sensing electrode 201. Of course, in some other embodiments, the axial direction of the support ring 302 can be arranged at an angle to the axial direction of the tube body of the electrode tube 200.

[0058] In one embodiment, referring to Figure 4 As shown, the support rings 302 are provided in plurality, and the plurality of support rings are arranged at intervals along the axial direction of the tube body of the electrode tube 200. Such an arrangement can further ensure that there is an all-round interval between the filter body 301 and the sensing electrode 201.

[0059] Specifically, a plurality of support rings may be arranged at equal intervals along the axial direction of the tube body of the electrode tube 200 .

[0060] The above are only preferred implementation modes of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0062] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A Karl Fischer titrator, characterized in that: The Karl Fischer titrator comprises: A reaction bottle (100) comprises a bottle body and a bottle cap arranged at the bottle mouth of the bottle body; An electrode tube (200) is inserted through the bottle cap and a sensing electrode (201) extends into the bottle body; The filter screen (300) is wrapped around the outside of the sensing electrode (201).

2. The Karl Fischer titrator according to claim 1, characterized in that: The edge of the filter screen (300) is gathered and fastened to the tube body of the electrode tube (200) by means of a detachable fastener.

3. The Karl Fischer titrator according to claim 2, characterized in that: The fastener is a clamp (400), and the clamp (400) surrounds the outer side of the edge of the filter screen (300) and tightens the edge of the filter screen (300) onto the tube body of the electrode tube (200).

4. The Karl Fischer titrator according to claim 3, characterized in that: The clamp (400) is provided in plurality, and the plurality of clamps (400) are arranged at intervals along the axial direction of the tube body of the electrode tube (200).

5. The Karl Fischer titrator according to claim 4, characterized in that: The tube body of the electrode tube (200) is sleeved with an elastic gasket (500), and the clamp (400) surrounds the outer side of the edge of the filter screen (300) and tightens the edge of the filter screen (300) onto the elastic gasket (500).

6. The Karl Fischer titrator according to claim 1, characterized in that: The filter screen (300) is configured as a filter screen structure made of aluminum or stainless steel.

7. The Karl Fischer titrator according to claim 1, characterized in that: The pore size of the filter screen (300) is 0.05-0.5 mm.

8. The Karl Fischer titrator according to claim 2, characterized in that: The filter screen (300) comprises a filter screen body (301) and a support ring (302); the edge of the filter screen body (301) is gathered and fastened to the tube body of the electrode tube (200); the support ring (302) is fixedly connected to the inner side or outer side of the filter screen body (301) and surrounds the outer side of the sensing electrode (201) at intervals.

9. The Karl Fischer titrator according to claim 8, characterized in that: The axial direction of the support ring (302) is consistent with the axial direction of the tube body of the electrode tube (200).

10. The Karl Fischer titrator according to claim 9, characterized in that: The support ring (302) is provided in plurality, and the plurality of support rings are arranged at intervals along the axial direction of the tube body of the electrode tube (200).

Images