Cotton thread permeation reference electrode membrane group easy to disassemble

Abstract

The utility model discloses an easy-to-disassemble cotton thread permeation reference electrode membrane module which comprises a membrane pressing seat, a membrane pressing plate, a membrane pressing plate, a membrane pressing plate, a membrane pressing plate and a membrane pressing plate, wherein an inner hole is formed in the membrane pressing seat in a penetrating manner; the cotton thread bar is arranged in the inner hole; and the ion permeable membrane is arranged at the bottom of the membrane pressing seat and is in contact with the cotton bar. According to the cotton thread permeation reference electrode membrane module provided by the utility model, the cotton thread is arranged in the inner hole of the membrane pressing seat, so that the defect that bubbles are generated in the inner hole of the membrane pressing seat in the storage and use processes of the electrode is overcome, and meanwhile, the pressure of filled liquid does not directly act on the ion permeation membrane any more, so that the service life of the membrane module is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electrode module technology, and in particular to an easily detachable cotton thread permeation reference electrode membrane assembly. Background Technology

[0002] Currently, there are two liquid connection methods between the reference electrode flow path and the internal filling chamber: one is the traditional ceramic tube method; the other is the ion permeation membrane method.

[0003] The main problem with the contagious ceramic tube method is the difficulty in controlling ion permeation between the ceramic tube walls. Excessive permeation may affect the testing of other parameters, and crystallization can easily clog the ceramic tube after the electrolyte permeates into the inner wall during storage; insufficient permeation affects the salt bridge of the entire electrode, thus affecting the performance of the reference electrode.

[0004] The ion-permeable membrane is assembled inside the electrode housing via a membrane holder. This connection method overcomes the problem of large side gaps inherent in the first method. However, the ion-permeable membrane is still constantly subjected to the pressure of the internal filling solution. Furthermore, this method introduces another issue: air bubbles may form in the inner hole of the membrane holder during electrode storage and use, causing instability in the electrode salt bridge and affecting electrode performance. This connection method also presents the problem of the ion-permeable membrane easily permeating through the internal filling solution when using a single-layer membrane, leading to blockage of the test flow path.

[0005] In view of this, it is necessary to propose further improvements to the current reference electrode module. Utility Model Content

[0006] Therefore, the purpose of this utility model is to at least partially solve the shortcomings of the prior art, thereby proposing an easily detachable cotton thread permeation reference electrode membrane assembly.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This utility model provides an easily detachable cotton thread permeation reference electrode membrane assembly, comprising:

[0009] A film pressing seat, wherein an inner hole is formed through the film pressing seat;

[0010] A cotton thread rod is disposed inside the inner hole;

[0011] An ion-permeable membrane is disposed at the bottom of the membrane pressing base and is in contact with the cotton thread bar.

[0012] Furthermore, the ion permeation membrane comprises two hydrophilic layers: a first polymer film and a second polymer film. One side of the first polymer film is in contact with the cotton bar, and the other side is provided with the second polymer film.

[0013] Furthermore, the first polymer film is a hydrophilic cellulose film.

[0014] Furthermore, the molecular weight of the first polymer film is 500D-1000D, and the thickness is 0.01mm-0.1mm.

[0015] Furthermore, the second polymer film is a cellulose acetate film with low protein adsorption.

[0016] Furthermore, the second polymer film has a molecular weight of less than 200D and a thickness of 0.01mm-0.1mm.

[0017] Furthermore, the bottom of the pressing base includes a protrusion, and the protrusion has an opening communicating with the inner hole, and the cotton thread rod passes through the inner hole and the opening.

[0018] Furthermore, the ion-permeable membrane is fixedly wrapped around the protrusion by a sealing element.

[0019] Furthermore, a slot is provided at the end of the pressure plate seat away from the protrusion, the inner sidewall of the slot is provided with a threaded structure, and the slot communicates with the inner hole.

[0020] Furthermore, the sealing element is an annular sealing ring.

[0021] This invention provides an easily detachable cotton thread permeation reference electrode membrane assembly, comprising: a membrane base with an inner hole extending through it; a cotton thread rod disposed within the inner hole; and an ion permeation membrane disposed at the bottom of the membrane base and in contact with the cotton thread rod. By inserting cotton thread into the inner hole of the membrane base, this invention overcomes the drawback of air bubbles forming in the inner hole of the membrane base during storage and use. Furthermore, the pressure of the internal filling liquid no longer directly acts on the ion permeation membrane, thereby extending the service life of the membrane assembly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a side view of the easily detachable cotton thread permeation reference electrode membrane assembly of this utility model.

[0024] Figure 2This is a cross-sectional view of the easily detachable cotton thread permeation reference electrode membrane assembly of this utility model.

[0025] Figure 3 This is a schematic diagram of the bottom structure of the easily detachable cotton thread permeation reference electrode membrane assembly of this utility model;

[0026] Figure 4 This is a schematic diagram of the top structure of the easily detachable cotton thread permeation reference electrode membrane assembly of this utility model.

[0027] Figure 5 This is a schematic diagram of the structure of the easily detachable cotton thread permeation reference electrode membrane assembly of this utility model disposed in the electrode shell;

[0028] Figure 6 This is a cross-sectional view of the easily detachable cotton thread permeation reference electrode membrane assembly of this utility model disposed on the electrode shell.

[0029] The attached figures are labeled as follows: 1. Pressing base; 11. Groove; 111. Threaded structure; 2. Cotton bar; 3. Ion permeation membrane; 4. Protrusion; 41. Opening; 5. Sealing element; 6. Electrode shell. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] Please refer to Figures 1 to 6 This utility model provides an easily detachable cotton thread permeation reference electrode membrane assembly, comprising:

[0033] A pressure film holder 1 has an inner hole that extends through it.

[0034] Cotton thread stick 2, set inside the inner hole;

[0035] An ion-permeable membrane 3 is disposed at the bottom of the membrane holder 1 and is in contact with the cotton thread rod 2.

[0036] In this embodiment, an easily detachable cotton thread permeation reference electrode membrane assembly includes a membrane base 1, with an inner hole through which a cotton thread rod 2 is disposed. An ion permeation membrane 3 is also wrapped around the outer side of the bottom of the membrane base 1, and the ion permeation membrane 3 is in direct contact with the cotton thread rod 2.

[0037] In existing ion-osmosis membrane systems, the ion-osmosis membrane is assembled in the electrode housing 6 via a membrane holder. However, the ion-osmosis membrane is constantly subjected to the pressure of the internal filling liquid. Furthermore, during electrode storage and use, air bubbles may form in the inner hole of the membrane holder, causing instability in the electrode salt bridge and affecting electrode performance. In this embodiment, however, by installing a cotton thread rod 2 in the inner hole of the membrane holder 1, the internal filling liquid permeates to the ion-osmosis membrane 3 through the cotton thread rod 2. Since the cotton thread rod 2 is directly in contact with the ion-osmosis membrane 3, the pressure of the internal filling liquid does not directly act on the ion-osmosis membrane 3, but rather flows slowly onto the ion-osmosis membrane 3 through the cotton thread rod 2, preventing it from being directly pushed down. This also overcomes the drawback of air bubbles forming in the inner hole of the membrane holder 1 during electrode storage and use, thereby extending the service life of the membrane assembly.

[0038] Please refer to Figure 5 and Figure 6 The entire membrane assembly is fixed to the bottom of the electrode housing 6.

[0039] Furthermore, the ion permeation membrane 3 includes two hydrophilic layers: a first polymer film and a second polymer film. One side of the first polymer film is in contact with the cotton rod 2, and the other side is provided with the second polymer film.

[0040] In this embodiment, the ion-permeable membrane 3 is a two-layer hydrophilic polymer film, specifically including a first polymer film and a second polymer film. Because existing ion-permeable membrane methods suffer from the problem of internal filling liquid easily permeating through a single-layer membrane, leading to blockage of the test flow path, this embodiment uses a double-layer hydrophilic polymer film, which solves the problem of test flow path blockage.

[0041] Specifically, one side of the first polymer film is in contact with the cotton thread 2 and also with the bottom of the pressing base 1, while the other side is provided with a second polymer film, and the first polymer film and the second polymer film are in contact with each other.

[0042] Furthermore, the first polymer film is a hydrophilic cellulose film.

[0043] In this embodiment, the hydrophilic cellulose membrane has good hydrophilicity and stability, thereby reducing the tendency to foul and improving flux performance. This is beneficial for accelerating ion transport and improving ion permeation efficiency during ion permeation. Furthermore, the high hydrophilicity of the hydrophilic cellulose membrane makes it less susceptible to contaminant adhesion during ion permeation, thereby reducing membrane clogging and fouling and extending the membrane's service life.

[0044] Specifically, the molecular weight of the first polymer film is 500D-1000D (Daltons), and the thickness is 0.01mm-0.1mm. In this embodiment, the molecular weight of the first polymer film is specifically 1000D, and the thickness is specifically 0.05mm. The molecular weight and thickness of the first polymer film are not specifically limited here, but are set according to actual production needs.

[0045] Furthermore, the second polymeric membrane is a cellulose acetate membrane with low protein adsorption.

[0046] In this embodiment, the cellulose acetate membrane with low protein adsorption exhibits minimal adsorption of protein samples and no "tailing" phenomenon; it possesses natural hydrophilicity, which helps accelerate ion transport and improve ion permeation efficiency; it has a high flow rate, which effectively improves filtration efficiency; and its narrow pore size distribution helps improve filtration effect and stability.

[0047] Specifically, the second polymer film has a molecular weight of less than 200D and a thickness of 0.01mm-0.1mm. In this embodiment, the second polymer film has a molecular weight of 100D and a thickness of 0.05mm. The molecular weight and thickness of the second polymer film are not specifically limited here and are set according to actual production needs.

[0048] Furthermore, the bottom of the pressing base 1 includes a protrusion 4, and an opening 41 communicating with the inner hole is also provided in the protrusion 4, and the cotton thread 2 is provided through the inner hole and the opening 41.

[0049] In this embodiment, a protrusion 4 is also provided at the bottom of the pressing base 1. An opening 41 is also provided through the protrusion 4. The opening 41 communicates with the inner hole in the pressing base 1, so that the cotton thread rod 2 passes through the inner hole and the opening 41.

[0050] Furthermore, the ion-permeable membrane 3 is fixedly wrapped around the protrusion 4 by a sealing element 5.

[0051] In this embodiment, the ion permeation membrane 3 is fixedly wrapped around the protrusion 4 by a sealing member 5. That is, the entire ion permeation membrane 3 is wrapped around the protrusion 4 by the sealing member 5, so that there is no gap between the ion permeation membrane 3 and the protrusion 4. This allows the cotton thread 2 to permeate the internal filling liquid from the opening 41 of the protrusion 4 to the ion permeation membrane 3, and it will not flow out from the gap between the ion permeation membrane 3 and the protrusion 4.

[0052] Specifically, the sealing element 5 is an annular sealing ring, the hardness of which is lower than that of the material of the pressure film seat 1. When the membrane assembly is placed in the electrode shell 6, the electrode shell 6 is provided with an assembly structure corresponding to the annular sealing ring. In actual use, the annular sealing ring can also simultaneously seal the electrode flow path.

[0053] Furthermore, a slot 11 is provided at the end of the pressure plate seat 1 away from the protrusion 4. The inner sidewall of the slot 11 is provided with a threaded structure 111, and the slot 11 communicates with the inner hole.

[0054] In this embodiment, a slot 11 is also provided at one end of the pressing base 1, and a threaded structure 111 is provided on the inner side wall of the slot 11. The threaded structure 111 facilitates the installation and disassembly of the electrode film assembly, reduces the waste of the electrode shell 6 caused by the defect of the pressing base 1, and reduces the production and maintenance cost of the entire electrode.

[0055] The groove 11 is also connected to the inner hole of the pressure membrane seat 1. The internal filling liquid flows from the groove 11 into the inner hole and the opening 41. The inner hole and the opening 41 are filled with cotton rods 2, which allow the internal filling liquid to permeate onto the ion permeation membrane 3.

[0056] This invention provides an easily detachable cotton thread permeation reference electrode membrane assembly, comprising: a membrane base with an inner hole extending through it; a cotton thread rod disposed within the inner hole; and an ion permeation membrane disposed at the bottom of the membrane base and in contact with the cotton thread rod. By inserting cotton thread into the inner hole of the membrane base, this invention overcomes the drawback of air bubbles forming in the inner hole of the membrane base during storage and use. Furthermore, the pressure of the internal filling liquid no longer directly acts on the ion permeation membrane, thereby extending the service life of the membrane assembly.

[0057] It should be noted that the various embodiments in this utility model are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] It should also be noted that, in the present invention, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined in the present invention may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A readily detachable cotton thread permeated reference electrode membrane set, characterized by, include: A film pressing seat, wherein an inner hole is formed through the film pressing seat; A cotton thread rod is disposed inside the inner hole; An ion-permeable membrane is disposed at the bottom of the membrane pressing base and is in contact with the cotton thread bar.

2. The easily detachable cotton thread permeated reference electrode membrane set according to claim 1, characterized by, The ion-permeable membrane comprises two hydrophilic polymer films: a first polymer film and a second polymer film. One side of the first polymer film is in contact with the cotton bar, and the other side is provided with the second polymer film.

3. The easily detachable cotton thread permeated reference electrode membrane set according to claim 2, characterized by, The first polymer film is a hydrophilic cellulose film.

4. The easily detachable cotton thread permeated reference electrode membrane set according to claim 3, characterized by, The first polymer film has a molecular weight of 500D-1000D and a thickness of 0.01mm-0.1mm.

5. The easily detachable cotton thread permeated reference electrode membrane set according to claim 2, characterized by, The second polymer film is a cellulose acetate film with low protein adsorption.

6. The easily detachable cotton thread permeated reference electrode membrane set according to claim 5, characterized by, The second polymer film has a molecular weight of less than 200D and a thickness of 0.01mm-0.1mm.

7. The easily detachable cotton thread permeation reference electrode membrane assembly according to claim 1, characterized in that, The bottom of the pressing base includes a protrusion, and the protrusion also has an opening that communicates with the inner hole, and the cotton thread rod passes through the inner hole and the opening.

8. The easily detachable cotton thread permeated reference electrode membrane set according to claim 7, characterized by, The ion-permeable membrane is fixedly wrapped around the protrusion by a sealing element.

9. The easily detachable cotton thread permeated reference electrode membrane set according to claim 8, characterized by, The end of the pressure plate seat away from the protrusion is also provided with a slot, the inner sidewall of the slot is provided with a threaded structure, and the slot is connected to the inner hole.

10. The easily detachable cotton thread permeated reference electrode membrane set according to claim 8, characterized by, The sealing element is an annular sealing ring.

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