A simple filtering device for chemical analysis

Abstract

The utility model relates to a simple filtering device for chemical analysis, including a filtrate bottle, a funnel and filter paper; the funnel is correspondingly arranged on the top of the filtrate bottle; the filter paper is correspondingly arranged on the inner wall of the funnel; wherein the filter paper is folded by a fancy 1 / 8 folding method and then placed on the inner wall of the funnel. The utility model changes the folding method of the filter paper, so that the force on the funnel wall is more uniform, which can effectively speed up the filtering speed, and the precipitation is not easy to be lost. At the same time, the ingenious combination of the funnel and the filtrate bottle makes the filtering operation simpler and more convenient, which is suitable for large-scale production operations.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical analysis, in particular to a simple filtering device for chemical analysis. Background Art

[0002] In the process of chemical analysis, filtration is required for gravimetric operations and when there are impurities in the solution. However, traditional filtration devices are complicated to operate, have a slow filtration speed, and metal frames are prone to corrosion in chemical analysis rooms. They are suitable for filtration in scientific research or precision experiments, but not suitable for filtration operations in large-scale production processes. Summary of the invention

[0003] In view of the above problems, the purpose of the utility model is to provide a simple filtering device for chemical analysis, which makes the funnel wall bear force evenly by changing the folding mode of the filter paper, speeds up the filtering speed, and prevents the precipitation from being lost. At the same time, the clever combination of the funnel and the filtrate bottle makes the filtering operation simple and suitable for large-scale production operation.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The utility model provides a simple filtering device for chemical analysis, comprising a filtrate bottle, a funnel and filter paper; the funnel is correspondingly arranged on the top of the filtrate bottle; the filter paper is correspondingly arranged on the inner wall of the funnel; wherein the filter paper is folded by a fancy 1 / 8 folding method and then placed on the inner wall of the funnel.

[0006] Furthermore, a layer of filter paper pad is arranged at the center of the bottom of the filter paper.

[0007] Furthermore, the filtrate bottle is a conical flask, a volumetric flask or a beaker.

[0008] Furthermore, the device also includes a wooden support; the wooden support includes a base plate, a support rod and a limit plate; the support rod is vertically fixed above the middle of the base plate; the limit plate is correspondingly arranged above the base plate and connected to the support rod; a limit hole is opened on the surface of the limit plate for limiting the funnel.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The materials and utensils used are commonly used in laboratories and have low costs.

[0011] 2. No metal materials are used in the device to prevent corrosion.

[0012] 3. Change the traditional filter paper structure, evenly force, speed up the filtration speed, and not easy to break. Add a pad in the center of the filter paper according to the actual situation to ensure that the precipitation is not lost and improve the accuracy of the test.

[0013] 4. The filtration operation is simple and suitable for large-scale production operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the third embodiment of the present utility model;

[0017] Figure 4 Schematic diagram of the structure of filter paper.

[0018] Among them, the figure numbers are: 1-wooden support; 11-bottom plate; 12-support rod; 13-limiting plate; 2-filtrate bottle; 3-funnel; 4-filter paper; 5-filter paper pad. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Embodiment 1

[0021] See attached Figure 1 The present embodiment proposes a simple filtering device for chemical analysis, including a filtrate bottle 2, a funnel 3, a filter paper 4 and a filter paper pad 5. In the present embodiment, the filtrate bottle 2 adopts a conical bottle; the funnel 3 is correspondingly arranged on the top of the filtrate bottle 2 from top to bottom; the filter paper 4 is correspondingly arranged on the inner wall of the funnel 3; wherein, the filter paper 4 is folded by a fancy 1 / 8 folding method and then placed on the inner wall of the funnel 3, so that the funnel is evenly stressed, the filtration speed is accelerated, and it is not easy to be damaged. The fancy 1 / 8 folding method is to divide the circular filter paper 4 into eight equal parts in the circumferential direction by folding, such as Figure 4 As shown, unfold the folded filter paper 4 and put it into the funnel, and evenly wet it with deionized water. If there is a lot of precipitation in the gravimetric analysis, add a 1 / 4 filter paper pad 5 at the center of the bottom of the filter paper 4 so that it can receive more precipitation and avoid precipitation loss.

[0022] Embodiment 2

[0023] See attached Figure 2 The difference between this embodiment and the first embodiment is that the filtrate bottle 2 adopts a volumetric flask, and the rest of the structures are the same.

[0024] Embodiment 3

[0025] See attached Figure 3 , the difference between this embodiment and the first and second embodiments is that: this embodiment also includes a wooden support 1, and the filtrate bottle 2 is a beaker; the wooden support 1 includes a bottom plate 11, a support rod 12 and a limit plate 13; the support rod 12 is vertically fixed above the middle of the bottom plate 11; the limit plate 13 is correspondingly arranged above the bottom plate 11 and is fixedly or rotatably connected to the support rod 12; the limit plate 13 has a conical limit hole 14 on its surface for limiting the funnel 3. When filtering, the beaker is placed on the bottom plate 11, and the funnel 3 passes through the conical limit hole 14 from top to bottom and is limited by the limit plate 13, and the bottom of the funnel 3 extends downward into the inside of the beaker.

[0026] The funnel 3 covered with filter paper 4 is placed on a conical flask or a volumetric flask according to different requirements of the filtrate. If a beaker is used to receive the filtrate, the funnel 3 is first placed on the limiting plate 13 so that the funnel neck rests on the inner wall of the beaker.

[0027] Taking the perchloric acid dehydration weight method to test the silicon content in ferrosilicon as an example, the silicon content is high, and there is more precipitation during filtration. Therefore, it is necessary to add a layer of 1 / 4 filter paper pad 5 at the bottom center of the filter paper 4 to avoid precipitation loss during filtration or transfer, which affects the test results. The filter paper 4 adopts a fancy 1 / 8 folding method, which is uniformly stressed during filtration, fast, and not easy to break. If the filtrate is retained to analyze the content of elements such as phosphorus, a volumetric flask is selected to receive the filtrate and directly set the volume. If the filtrate needs to further add reagents to react, a conical flask or beaker is selected to receive the filtrate as needed. In this way, the filtrate does not need to be transferred, which saves time and effort and improves accuracy.

[0028] Matters not described in detail in this utility model are known technologies.

[0029] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A simple filtering device for chemical analysis, characterized in that: The device comprises a filtrate bottle, a funnel and filter paper; the funnel is correspondingly arranged on the top of the filtrate bottle; the filter paper is correspondingly arranged on the inner wall of the funnel; wherein the filter paper is folded by a fancy 1 / 8 folding method and then placed on the inner wall of the funnel.

2. A simple filtering device for chemical analysis according to claim 1, characterized in that: A layer of filter paper pad is arranged at the center of the bottom of the filter paper.

3. A simple filtration device for chemical analysis according to claim 1, characterized in that: The filtrate bottle is a conical flask, a volumetric flask or a beaker.

4. A simple filtration device for chemical analysis according to claim 3, characterized in that: The device also includes a wooden support; the wooden support includes a bottom plate, a support rod and a limit plate; the support rod is vertically fixed above the middle of the bottom plate; the limit plate is correspondingly arranged above the bottom plate and connected to the support rod; a limit hole is opened on the surface of the limit plate for limiting the funnel.

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