Partition paper pickling weightlessness detection filtering device

Abstract

The utility model relates to a partition paper pickling weightlessness detection filtering device. The partition paper pickling weightlessness detection filtering device comprises a filtering cup; the sand core filter is positioned on one side of the filter cup and comprises a sand core funnel, a liquid discharge pipe, an external pipe, a vacuum joint and a detection joint; the liquid discharge pipe and the external pipe are located on the side, away from the filter cup, of the sand core funnel, the liquid discharge pipe and the external pipe are fixedly connected with the sand core funnel together, and the external pipe is arranged on the outer side of the liquid discharge pipe in a sleeving mode; the sand core funnel is communicated with the liquid discharging pipe, the vacuum connector is fixed to the outer surface of the external pipe and communicated with the external pipe, one end of the detection connector is fixed to the outer surface of the liquid discharging pipe and communicated with the liquid discharging pipe, and the other end of the detection connector penetrates through the external pipe and extends to the outer side of the external pipe; the liquid collecting bottle is located on one side, far away from the filter cup, of the sand core filter, and the liquid collecting bottle is detachably connected with the sand core filter. According to the partition paper pickling weightlessness detection filtering device, sand core suction filtration is adopted, and the detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of acid immersion weight loss detection of partition paper, and in particular to a filter device for acid immersion weight loss detection of partition paper. Background Technology

[0002] In the field of acid immersion loss detection of separator paper, the traditional detection method follows national standards. This method requires immersing the dried sample in sulfuric acid solution and maintaining it at 70℃±2℃ for 72 hours. Subsequently, the sample is washed with distilled water until neutral using an acid-resistant filter funnel G4, dried at 105℃±2℃ for 4 hours, and finally weighed after cooling to room temperature. However, this method has several problems: First, the detection cycle is too long, causing sample backlog and making timely processing impossible; second, the G4 funnel is relatively heavy, and its weight, compared to 2g of separator paper, can significantly affect the detection results. Furthermore, due to the fineness of the separator fibers, glass fibers may remain on the G4 funnel, leading to clogging over time and making cleaning difficult. Additionally, the apparatus needs to be disassembled to check the neutrality of the filtrate, which is inconvenient. Utility Model Content

[0003] Therefore, it is necessary to provide a filter device for detecting the weight loss of partition paper after acid impregnation, which addresses the issue of how to improve detection efficiency and accuracy.

[0004] A filter device for detecting the weight loss of diaphragm paper after acid impregnation includes:

[0005] A filter cup is used to receive a solid-liquid mixture of a separator paper sample and a sulfuric acid solution.

[0006] A sand core filter, located on one side of the filter cup, includes a sand core funnel, a drain pipe, an external connecting pipe, a vacuum connector, and a detection connector. The drain pipe and the external connecting pipe are located on the side of the sand core funnel away from the filter cup. The drain pipe and the external connecting pipe are fixedly connected to the sand core funnel, and the external connecting pipe is sleeved on the outside of the drain pipe. The sand core funnel communicates with the drain pipe. The vacuum connector is fixed to the outer surface of the external connecting pipe and communicates with it. One end of the detection connector is fixed to the outer surface of the drain pipe and communicates with it. The other end of the detection connector passes through the external connecting pipe and extends to the outside of the external connecting pipe.

[0007] A collection bottle is located on the side of the sand core filter away from the filter cup, and the collection bottle is detachably connected to the sand core filter.

[0008] The filtration device for detecting the loss on immersion in acid using partition paper in this invention employs sand core filtration, avoiding errors caused by the large weight of the G4 funnel. During use, a filter membrane is placed on the sand core funnel to prevent clogging. This improvement not only enhances the accuracy of the detection but also reduces potential problems in sample processing. Furthermore, the neutrality of the filtrate can be checked via the detection connector during filtration, simplifying operation and improving detection efficiency.

[0009] In one feasible implementation, the vacuum connector and the detection connector are located on the same side of the outer pipe, with the vacuum connector positioned close to the sand core funnel and the detection connector positioned away from the sand core funnel.

[0010] In one feasible implementation, the extension direction of the vacuum connector is parallel to the extension direction of the detection connector and perpendicular to the extension direction of the drain pipe.

[0011] In one feasible implementation, the inner diameter of the vacuum connector is 6mm to 10mm, and the inner diameter of the detection connector is 6mm to 10mm.

[0012] In one feasible implementation, the distance between the vacuum connector and the detection connector is 32 mm, the distance between the vacuum connector and the end of the drain pipe near the filter cup is 18 mm, and the distance between the detection connector and the end of the drain pipe near the collection bottle is 40 mm.

[0013] In one feasible implementation, the sand core funnel, the drain pipe, the external pipe, the vacuum connector, and the detection connector are integrally formed.

[0014] In one feasible implementation, the sand core filter further includes a sealing element fixed to the end of the detection connector away from the drain pipe.

[0015] In one feasible implementation, the sealing element is a piston.

[0016] In one feasible implementation, the diaphragm paper acid impregnation weight loss detection filtration device further includes a filter membrane located between the filter cup and the sand core filter.

[0017] In one feasible implementation, the filter cup and the sand core filter are fixedly connected by a fixing clip. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a filter device for detecting the weight loss of partition paper after acid impregnation according to one embodiment of the present invention.

[0019] Figure 2This is an exploded schematic diagram of a filter device for detecting the weight loss of partition paper after acid impregnation according to one embodiment of the present invention.

[0020] Figure 3 This is a perspective view of a filter device for detecting the weight loss of immersion paper in acid according to one embodiment of the present invention.

[0021] Figure 4 This is a flowchart of a method for detecting the weight loss of partition paper after acid impregnation according to one embodiment of the present invention;

[0022] Figure 5 A schematic diagram of a traditional filter device for detecting weight loss after acid impregnation of separator paper.

[0023] Figure 6 The graph shows the results of acid immersion weight loss testing of partition paper using the methods described in Examples 1 to 25 and Comparative Examples 1 to 25. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figures 1-3 The partition paper acid impregnation weight loss detection filtration device 100 according to one embodiment of the present invention includes a filter cup 110, a sand core filter 120 and a collection bottle 130.

[0028] The filter cup 110 is used to receive the solid-liquid mixture of the separator paper sample and the sulfuric acid solution. The end of the filter cup 110 closest to the sand core filter 120 matches the sand core filter 120. Both the lower end surface of the filter cup 110 and the upper end surface of the sand core filter 120 are rough surfaces. During use, a fixing clip is used to secure the filter cup 110 to the sand core filter 120, thus achieving a seal. This invention does not limit the shape or size of the filter cup 110.

[0029] The sand core filter 120 is located on one side of the filter cup 110. Specifically, the sand core filter 120 includes a sand core funnel 121, a drain pipe 122, an external connecting pipe 123, a vacuum connector 124, and a detection connector 125. The drain pipe 122 and the external connecting pipe 123 are located on the side of the sand core funnel 121 away from the filter cup 110. The drain pipe 122 and the external connecting pipe 123 are fixedly connected to the sand core funnel 121, and the external connecting pipe 123 is sleeved on the outside of the drain pipe 122. The sand core funnel 121 is connected to the drain pipe 122. The vacuum connector 124 is fixed to the outer surface of the external connecting pipe 123 and is connected to the external connecting pipe 123. One end of the detection connector 125 is fixed to the outer surface of the drain pipe 122 and is connected to the drain pipe 122. The other end of the detection connector 125 passes through the external connecting pipe 123 and extends to the outside of the external connecting pipe 123.

[0030] Specifically, in this embodiment, the other end of the vacuum connector 124 extends into the interior of the outer tube 123. It is understood that the other end of the vacuum connector 124 only needs to be connected to the outer tube 123, for example, the end face of the other end of the vacuum connector 124 smoothly transitions to the inner surface of the outer tube 123.

[0031] The collection bottle 130 is located on the side of the sand filter 120 away from the filter cup 110, and the collection bottle 130 is detachably connected to the sand filter 120. Specifically, the sand filter 120 is fitted inside or outside the collection bottle 130.

[0032] The filtration device 100 for detecting the loss on acid impregnation of diaphragm paper in this embodiment is used for vacuum filtration during the detection process. In use, a filter membrane of the same size as the sand core is placed on the sand core funnel 121. The filter cup 110 is fixed to the sand core filter 120 using a clamp, and a vacuum device is connected to the vacuum connector 124. The solid-liquid mixture is poured into the filter cup 110 for vacuum filtration. During filtration, the mixture is washed with distilled water. The collection bottle 130 is used to collect the filtrate discharged from the drain pipe 122. During filtration, the neutrality of the filtrate is detected using the detection connector 125.

[0033] The filtration device 100 for detecting the loss on immersion acid in this embodiment employs sand core filtration, avoiding errors caused by the large weight of the G4 funnel. During use, a filter membrane is placed on the sand core funnel 121 to prevent clogging. This improvement not only enhances detection accuracy but also reduces potential problems during sample processing. Furthermore, the neutrality of the filtrate can be detected via the detection connector 125 during filtration, simplifying operation and improving detection efficiency.

[0034] Based on the aforementioned embodiment, the vacuum connector 124 and the detection connector 125 are located on the same side of the outer connecting pipe 123, with the vacuum connector 124 positioned closer to the sand core funnel 121 and the detection connector 125 positioned further away from the sand core funnel 121. It should be noted that the positions of the vacuum connector 124 and the detection connector 125 are not limited to these. The vacuum connector 124 can be located at any position on the outer connecting pipe 123, as long as it is connected to the outer connecting pipe 123; the detection connector 125 can be located at any position on the drain pipe 122, as long as it is connected to the drain pipe 122.

[0035] Based on the aforementioned embodiments, the extension direction of the vacuum connector 124 is parallel to the extension direction of the detection connector 125 and perpendicular to the extension direction of the drain pipe 122.

[0036] Based on the aforementioned embodiments, the inner diameter of the vacuum connector 124 is 6mm to 10mm, and the inner diameter of the detection connector 125 is 6mm to 10mm. Further, the inner diameter of the vacuum connector 124 may be, but is not limited to, 6mm, 7mm, 8mm, 9mm, or 10mm, and the inner diameter of the detection connector 125 may be, but is not limited to, 6mm, 7mm, 8mm, 9mm, or 10mm.

[0037] In one feasible implementation, the distance between the vacuum connector 124 and the detection connector 125 is 32 mm, the distance between the vacuum connector 124 and the end of the drain pipe 122 near the filter cup 110 is 18 mm, and the distance between the detection connector 125 and the end of the drain pipe 122 near the collection bottle 130 is 40 mm.

[0038] Based on the aforementioned implementation method, the sand core funnel 121, drain pipe 122, external pipe 123, vacuum connector 124, and detection connector 125 are integrally formed. This helps to ensure the sealing during the filtration process and improves the filtration effect.

[0039] Based on the aforementioned embodiment, the sand core filter 120 further includes a sealing member 126, which is fixed to the end of the detection connector 125 away from the drain pipe 122. The sealing member 126 is used to seal the detection connector 125. During filtration, the sealing member 126 is fixed to the end of the detection connector 125 away from the drain pipe 122. When it is necessary to test the pH value of the filtrate, the sealing member 126 is opened, and the filtrate is drawn from the detection connector 125. Afterward, the sealing member 126 is fixed to the end of the detection connector 125 away from the drain pipe 122. This operation is simple and convenient, ensuring that the separator paper is thoroughly cleaned.

[0040] Based on the aforementioned embodiments, the sealing element 126 is a piston. Further, the piston is a glass piston. It should be noted that this utility model does not limit the specific form and material of the sealing element 126; it can also be other components capable of achieving sealing and being acid-resistant.

[0041] Based on the aforementioned embodiments, the partition paper acid impregnation weight loss detection filter device 100 also includes a filter membrane (not shown), which is located between the filter cup 110 and the sand core filter 120 during use.

[0042] Based on the aforementioned embodiments, the filter cup 110 and the sand core filter 120 are fixedly connected by a fixing clip (not shown).

[0043] The filtration device for detecting the loss on immersion in acid using partition paper in this invention employs sand core filtration, avoiding errors caused by the large weight of the G4 funnel. During use, a filter membrane is placed on the sand core funnel to prevent clogging. This improvement not only enhances the accuracy of the detection but also reduces potential problems in sample processing. Furthermore, the neutrality of the filtrate can be checked via the detection connector during filtration, simplifying operation and improving detection efficiency.

[0044] Please see Figure 4 The method for detecting the weight loss of partition paper after acid impregnation according to one embodiment of this utility model includes the following steps:

[0045] S10. Provide a filter device for detecting the weight loss of immersion paper in acid as described above.

[0046] The filter device for detecting the acid immersion weight loss of the partition paper in step S10 is any of the filter devices described above, and will not be elaborated further here.

[0047] S20. Place the dried separator paper sample into a sulfuric acid solution and keep it at a temperature of 68℃~72℃ for 48 hours to obtain a solid-liquid mixture.

[0048] In step S20, the soluble substances in the separator paper sample are able to fully dissolve in the sulfuric acid solution under the above-mentioned temperature and time conditions. Further, the temperature may be, but is not limited to, 68°C, 69°C, 70°C, 71°C, or 72°C.

[0049] The inventor of this utility model has creatively discovered that when the dried partition paper sample is placed in a sulfuric acid solution and kept at a temperature of 68℃~72℃ for 48 hours, the difference is very small compared with the traditional standard of 72 hours. Therefore, the acid immersion time can be shortened to 48 hours, which can significantly improve the detection efficiency.

[0050] In one feasible implementation, the concentration of the sulfuric acid solution is 1.275 g / cm³. 3 ~1.285g / cm 3 The pH of the filtrate when neutral is 6.8–8.2. Furthermore, the concentration of the sulfuric acid solution can be, but is not limited to, 1.275 g / cm³. 3 1.280g / cm 3 Or 1.285g / cm 3 The pH value of the filtrate when it is neutral can be, but is not limited to, 6.8, 6.9, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.0, 8.1 or 8.2.

[0051] S30. Pour the solid-liquid mixture obtained in step S20 into the filter device for detecting the loss of weight of the partition paper impregnation in step S10 for vacuum filtration. During the vacuum filtration process, wash with distilled water until the filtrate is neutral. Then dry it at a temperature of 103℃~107℃ to constant weight, and weigh it after cooling to room temperature.

[0052] In one feasible implementation, the operation to detect whether the filtrate is neutral is as follows: open the piston 126, draw the filtrate from the detection connector 125, and detect the pH value of the filtrate. This operation is simple and convenient, ensuring that the separator paper is thoroughly washed clean.

[0053] The method for detecting the loss on weight of immersion in acid using partition paper, as described in this utility model, is simple to operate. Firstly, the immersion time is shortened from the traditional 72 hours to 48 hours, significantly improving detection efficiency. Secondly, the use of the aforementioned partition paper acid immersion loss detection filtration device for sand core filtration, with a filter membrane placed on the sand core funnel, avoids clogging and prevents errors caused by the relatively large weight of the G4 funnel. This improvement not only enhances detection accuracy but also reduces potential problems in sample processing. Furthermore, the neutrality of the filtrate can be checked via the detection connector during filtration, simplifying operation and further improving detection efficiency.

[0054] Referring to the above embodiments, in order to make the technical solution of this utility model more specific, clear and easy to understand, examples of the technical solution of this utility model are given below. However, it should be noted that the content to be protected by this utility model is not limited to the following embodiments.

[0055] Examples 1 to 25

[0056] The methods for detecting the acid impregnation loss of partition paper in Examples 1 to 25 include the following steps:

[0057] supply Figures 1-3 The illustrated filter device for detecting weight loss during acid impregnation of partition paper;

[0058] 2g of dried separator paper samples from 25 different manufacturers were placed in a solution with a concentration of 1.280g / cm³. 3 In a sulfuric acid solution, the mixture was kept at 70°C for 48 hours to obtain a solid-liquid mixture;

[0059] The solid-liquid mixture was poured into the above-mentioned separator paper acid impregnation weight loss detection filter device for vacuum filtration. During the vacuum filtration process, the mixture was washed with distilled water until the filtrate was neutral. Then, it was dried at 105°C to constant weight and weighed after cooling to room temperature.

[0060] The information on the partition paper samples from 25 manufacturers in Examples 1 to 25 is shown in Table 1.

[0061] Table 1

[0062]

[0063] Comparative Examples 1 to 25

[0064] Comparative Examples 1 to 25 are comparative examples of Examples 1 to 25, respectively, providing a method for detecting the weight loss of partition paper after acid impregnation. The only difference between these methods and the preparation methods of Examples 1 to 25 is that the paper is kept at a temperature of 70°C for 72 hours.

[0065] Comparative Example 26

[0066] This comparative example is the same as Example 1, and provides a method for detecting the weight loss of partition paper after acid impregnation. The steps are as follows:

[0067] supply Figure 5The conventional diaphragm paper acid impregnation loss-in-weight detection and filtration device 100' shown includes a G4 funnel 110', a collection bottle 120', and a stopper 130'. The drain end of the G4 funnel 110' is inserted into the collection bottle 120', and the stopper 130' is used to achieve a seal between the G4 funnel 110' and the collection bottle 120'. The collection bottle 120' includes a bottle body 121' and a vacuum connector 122', with the vacuum connector 122' fixed to the outer surface of the bottle body 121'.

[0068] 2g of dried separator paper sample was placed in a solution with a concentration of 1.280g / cm³. 3 In a sulfuric acid solution, the mixture was kept at 70°C for 48 hours to obtain a solid-liquid mixture;

[0069] The solid-liquid mixture was poured into the G4 funnel 110' of the partition paper acid impregnation loss detection filter device 100' for vacuum filtration. During the vacuum filtration process, the mixture was washed with distilled water until the filtrate was neutral. Then, it was dried at 105°C to constant weight and weighed after cooling to room temperature.

[0070] Comparative Example 27

[0071] This comparative example is the comparative example of Example 7, providing a method for detecting the weight loss of partition paper after acid impregnation, the steps of which are as follows:

[0072] 2g of dried separator paper sample was placed in a solution with a concentration of 1.280g / cm³. 3 In a sulfuric acid solution, the mixture was kept at 70°C for 48 hours to obtain a solid-liquid mixture;

[0073] The solid-liquid mixture was poured into the G4 funnel 110' of the partition paper acid impregnation loss detection filter device 100' for vacuum filtration. During the vacuum filtration process, the mixture was washed with distilled water until the filtrate was neutral. Then, it was dried at 105°C to constant weight and weighed after cooling to room temperature.

[0074] Performance testing:

[0075] (1) The acid impregnation weight loss of the partition paper was tested using the methods described in Examples 1 to 25 and Comparative Examples 1 to 25. The results are as follows: Figure 6 .from Figure 6 It can be seen that the results of immersing the partition paper samples from different manufacturers in sulfuric acid solution for 48 hours are very similar to those of the traditional standard immersion of 72 hours. This indicates that the immersion time for acid loss can be shortened to 48 hours, which can significantly improve the detection efficiency.

[0076] (2) The acid impregnation weight loss of the partition paper was tested using the methods described in Examples 1, 7, 26, and 27. The results are as follows:

[0077] Table 2

[0078]

[0079] As can be seen from Table 2, comparing Example 1 and Comparative Example 26, it can be seen that the error of the acid immersion weight loss detection of the partition paper using the sand core funnel of Example 1 of this utility model is smaller than that of the G4 funnel, thus improving the accuracy of the detection. Similarly, comparing Example 7 and Comparative Example 27, the error of the acid immersion weight loss detection of the partition paper using the sand core funnel of Example 7 of this utility model is smaller, thus improving the accuracy of the detection.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A filter device for detecting the loss on acid impregnation of partition paper, characterized in that, The device comprises: a filter cup for receiving a filter paper sample and a solid-liquid mixture of sulfuric acid solution; a sand core filter located on one side of the filter cup, the sand core filter comprising a sand core funnel, a liquid discharge pipe, an external connecting pipe, a vacuum joint and a detection joint; the liquid discharge pipe and the external connecting pipe are located on the side of the sand core funnel away from the filter cup, the liquid discharge pipe and the external connecting pipe are fixedly connected with the sand core funnel, and the external connecting pipe is sleeved on the outside of the liquid discharge pipe; the sand core funnel is in communication with the liquid discharge pipe, the vacuum joint is fixed on the outer surface of the external connecting pipe and is in communication with the external connecting pipe, one end of the detection joint is fixed on the outer surface of the liquid discharge pipe and is in communication with the liquid discharge pipe, and the other end of the detection joint penetrates through the external connecting pipe and extends to the outside of the external connecting pipe; and a liquid collecting bottle located on the side of the sand core filter away from the filter cup, and the liquid collecting bottle is detachably connected with the sand core filter.

2. The filter device for detecting the weight loss of paper impregnated with acid according to claim 1, wherein The vacuum joint and the detection joint are located on the same side of the external connecting pipe, and the vacuum joint is arranged close to the sand core funnel, and the detection joint is arranged away from the sand core funnel.

3. The filter device for detecting the weight loss of paper impregnated with acid according to claim 1, wherein The extension direction of the vacuum joint is parallel to the extension direction of the detection joint and perpendicular to the extension direction of the liquid discharge pipe.

4. The filter device for detecting the weight loss of paper impregnated with acid according to claim 2, wherein The inner diameter of the vacuum joint is 6mm-10mm, and the inner diameter of the detection joint is 6mm-10mm.

5. The filter device for detecting the weight loss of paper impregnated with acid according to claim 2, wherein The distance between the vacuum joint and the detection joint is 32mm, the distance between the vacuum joint and the liquid discharge pipe close to the filter cup is 18mm, and the distance between the detection joint and the liquid discharge pipe close to the liquid collecting bottle is 40mm.

6. The filter device according to claim 1, wherein The sand core funnel, the liquid discharge pipe, the external connecting pipe, the vacuum joint and the detection joint are integrally formed.

7. The filter device according to claim 1, wherein The sand core filter further comprises a sealing member, and the sealing member is fixed to the end of the detection joint away from the liquid discharge pipe.

8. The filter device according to claim 7, wherein the filter device is a filter device for detecting loss of weight by immersion of the separator paper in an acid. The sealing member is a piston.

9. The filter device according to claim 1, wherein The filter device for detecting the weight loss of filter paper immersed in acid further comprises a filter membrane, and the filter membrane is located between the filter cup and the sand core filter.

10. The filter device according to claim 1, wherein the filter device is a filter device for detecting loss of weight of a paper impregnated with an acid. The filter cup and the sand core filter are fixedly connected by a fixing clamp.

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