Detachable Buchner funnel

Abstract

The utility model relates to the technical field of Buchner funnels, in particular to a detachable Buchner funnel, which comprises an upper funnel and a lower funnel, the upper funnel is detachably connected with the lower funnel, a filter hole main body is arranged in the lower funnel, and a buffer inclined surface is arranged from the upper edge of the lower funnel to the filter hole main body. The upper funnel and the lower funnel are connected firstly, then suction filtration operation is carried out, the upper funnel and the lower funnel are separated after suction filtration is completed, filter residues are stored in a space formed by the buffer inclined plane and the filter hole main body, and the lower funnel is inversely buckled on another piece of filter paper, so that a complete filter cake can be obtained. The upper funnel and the lower funnel are arranged and can be detached after the experiment is completed, so that the influence on taking out of the filter cake due to the existence of the upper funnel is avoided. And by arranging the buffer inclined surface, the operation difficulty of completely taking out the filter cake is reduced, and the filter cake can be prevented from wrinkling on the filter hole main body to influence the whiteness measurement result.

Description

Technical Field

[0001] The utility model relates to the technical field of Buchner funnels, in particular to a detachable Buchner funnel. Background Art

[0002] When a traditional Büchner funnel is manufactured, it is difficult to place a round piece of white silk cloth with the same diameter as the ceramic funnel flatly into the bottom of the funnel, and bubbles are easily generated when placing it, resulting in poor air tightness, which increases the difficulty of filtration. In addition, after the filtration is completed, a large amount of slurry will remain on the inner wall of the Büchner funnel, and it is difficult to completely remove the filter cake after the filtration is completed. When removing the filter cake, the slurry is unevenly stressed, resulting in depressions and potholes, etc., which leads to uneven distribution of slurry fibers, resulting in large errors in whiteness measurement results. After the filtration is completed, the white silk cloth is wetted with water and fits tightly to the surface of the filter cake. Lifting the white silk cloth will take away some slurry, causing the filter cake to be uneven, which also causes large errors in whiteness measurement results. Utility Model Content

[0003] The utility model aims to provide a detachable Büchner funnel to solve the technical problems in the prior art that it is difficult to completely remove the filter cake after filtration using the Büchner funnel, and that the pulp fiber distribution is uneven due to uneven force on the pulp during removal, resulting in depressions and pits.

[0004] The utility model discloses a detachable Buchner funnel, comprising an upper funnel and a lower funnel, wherein the upper funnel and the lower funnel are detachably connected, a filter hole body is arranged in the lower funnel, and a buffer slope is arranged from the upper edge of the lower funnel to the filter hole body.

[0005] Working principle: first lay the filter paper on the filter body, connect the upper funnel and the lower funnel and then perform the filtration operation. After the filtration is completed, separate the upper funnel and the lower funnel. The filter residue will be stored in the space constructed by the buffer slope and the filter body. Put the lower funnel upside down on another piece of filter paper to get a complete filter cake. By setting the upper funnel and the lower funnel, they can be disassembled after the experiment is completed to avoid the existence of the upper funnel affecting the removal of the filter cake. Through the detachable setting, the upper funnel and the lower funnel can be partially replaced after damage. By setting the buffer slope, the difficulty of completely removing the filter cake is reduced, and wrinkles on the filter body can be prevented to affect the whiteness measurement results.

[0006] Furthermore, the angle between the buffer slope and the filter hole body is 110°-120°.

[0007] By setting the included angle between the buffer slope and the filter hole body, it is ensured that there is enough space for placing the filter paper and taking out the filter cake.

[0008] Furthermore, the angle between the buffer slope and the filter hole body is 115°.

[0009] Furthermore, the upper funnel and the lower funnel are connected by a snap fastener.

[0010] Furthermore, the upper funnel is provided with a male buckle, and the lower funnel is provided with a female buckle.

[0011] Furthermore, the male buckle is arranged in a ring shape on the upper funnel.

[0012] By arranging the male buckle in a ring shape, the female buckle can be snap-fitted at any position, thereby improving the convenience of installing the upper funnel and the lower funnel.

[0013] Furthermore, there are at least two female buckles, and the female buckles are evenly arranged on the lower funnel.

[0014] By providing at least two female buckles, a stable connection between the upper funnel and the lower funnel can be achieved, and the funnel can be conveniently used.

[0015] Furthermore, the female buckle is connected to the lower funnel via a rotating shaft.

[0016] By setting the rotating shaft, the female buckle can move on the lower funnel, so that the female buckle has a larger moving space after the female buckle and the male buckle are separated, which is convenient for installation and disassembly.

[0017] Furthermore, the female buckle is made of 316 stainless steel sheet.

[0018] By setting the female buckle to a 316 stainless steel sheet, 316 stainless steel will not release transition metals, which can effectively avoid the influence of transition metals on the whiteness measurement results.

[0019] Furthermore, the upper funnel and the lower funnel are both made of PP material.

[0020] By setting the upper funnel and the lower funnel to be PP material, it has the advantages of light material, environmental protection, resistance to heavy pressure and impact, chemical resistance and high temperature resistance.

[0021] Furthermore, a seal is provided at the connection between the upper funnel and the lower funnel.

[0022] By providing a seal, it is possible to prevent liquid from leaking out.

[0023] Furthermore, there are two sealing members.

[0024] Furthermore, the sealing element is a rubber ring.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] 1. Divide the funnel into two parts, upper and lower, to facilitate the placement of filter paper, avoid bubbles when placing the filter paper due to operator errors, and avoid puncturing the filter paper when manually eliminating bubbles;

[0027] 2. By setting a buffer slope, it plays a supporting role when placing the filter paper, avoiding large wrinkles on the filter paper and tearing the filter paper during filtration. At the end of filtration, the filter residue will be stored in the space constructed by the buffer slope and the filter hole body. After the filtration is completed, open the buckle connecting the upper and lower parts of the funnel, and turn the slurry upside down on another piece of filter paper to obtain a complete filter cake. Compared with the traditional Büchner funnel, at the end of filtration, the white silk cloth is in close contact with the filter cake, and the filter cake and the edge of the funnel are inevitably in contact, which causes the slurry to hang on the inner wall of the funnel when the filter cake is taken out. When taking out the filter cake, the white silk cloth will inevitably produce wrinkles due to human operation, and the slurry on the white silk cloth will also be deformed. When the white silk cloth is removed, part of the slurry will be taken away due to the uneven surface of the white silk cloth, so that a complete and flat filter cake cannot be obtained;

[0028] 3. By setting the angle between the buffer slope and the filter body, ensure that there is enough space for placing the filter paper and removing the filter cake;

[0029] 4. By setting the male buckle in a ring shape, the female buckle can be snapped in any position, which improves the convenience of installing the upper funnel and the lower funnel;

[0030] 5. By providing at least two female buckles, the upper funnel and the lower funnel can be stably connected and can be conveniently used;

[0031] 6. By setting the rotating shaft, the female buckle can move on the lower funnel, so that the female buckle has a larger movement space after the female buckle and the male buckle are separated, which is convenient for installation and disassembly;

[0032] 7. By setting the female buckle to 316 stainless steel sheet, 316 stainless steel will not release transition metals, which can effectively avoid the influence of transition metals on the whiteness measurement results;

[0033] 8. By setting the upper funnel and the lower funnel to be PP material, it has the advantages of light material, environmental protection, resistance to heavy pressure and impact, chemical resistance and high temperature resistance;

[0034] 9. By setting a seal, it is possible to prevent liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the structure of the detachable Buchner funnel of the utility model.

[0037] In the above drawings, the meanings of the various marks are: 1-upper funnel, 2-lower funnel, 3-filter hole body, 4-buffer slope, 5-male buckle, 6-female buckle, 7-rotating shaft, 8-seal. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0039] Example 1

[0040] The technical solutions adopted in this embodiment are as follows:

[0041] like Figure 1 As shown, a detachable Buchner funnel includes an upper funnel 1 and a lower funnel 2, wherein the upper funnel 1 and the lower funnel 2 are detachably connected, a filter hole body 3 is arranged in the lower funnel 2, and a buffer slope 4 is arranged from the upper edge of the lower funnel 2 to the filter hole body 3.

[0042] Working principle: first lay the filter paper on the filter body 3, connect the upper funnel 1 and the lower funnel 2, and then perform the filtration operation. After the filtration is completed, separate the upper funnel 1 and the lower funnel 2. The filter residue will be stored in the space constructed by the buffer slope 4 and the filter body 3. Put the lower funnel 2 upside down on another piece of filter paper to get a complete filter cake. By setting the upper funnel 1 and the lower funnel 2, they can be disassembled after the experiment is completed to avoid the existence of the upper funnel 1 affecting the removal of the filter cake. Through the detachable setting, the upper funnel 1 and the lower funnel 2 can be partially replaced after damage. By setting the buffer slope 4, the difficulty of completely removing the filter cake is reduced, and wrinkles on the filter body 3 can be prevented to affect the whiteness measurement results.

[0043] Example 2

[0044] In this embodiment, as a preferred embodiment of the present utility model, the specific structure is as follows Figure 1 As shown, the following improvement is disclosed based on the first embodiment: the included angle between the buffer slope 4 and the filter hole body 3 is 115°.

[0045] By setting the included angle between the buffer slope 4 and the filter hole body 3, it is ensured that there is enough space for placing the filter paper and taking out the filter cake.

[0046] Example 3

[0047] In this embodiment, as a preferred embodiment of the present utility model, the specific structure is as follows Figure 1 As shown, it discloses the following improvement on the basis of implementation mode 2, the upper funnel 1 and the lower funnel 2 are further connected by a snap buckle, the upper funnel 1 is provided with a male buckle 5, the lower funnel 2 is provided with a female buckle 6, the male buckle 5 is arranged in a ring on the upper funnel 1, there are two female buckles 6, and the female buckles 6 are evenly arranged on the lower funnel 2, the female buckle 6 is connected to the lower funnel 2 through a rotating shaft 7, and the female buckle 6 is a 316 stainless steel sheet.

[0048] By arranging the male buckle 5 in a ring shape, the female buckle 6 can be snap-fitted at any position, thereby improving the convenience of installing the upper funnel 1 and the lower funnel 2.

[0049] By providing at least two female buckles 6, a stable connection between the upper funnel 1 and the lower funnel 2 can be achieved, and the funnel can be conveniently used.

[0050] By providing the rotating shaft 7, the female buckle 6 can move on the lower funnel 2, so that the female buckle 6 has a larger moving space after the female buckle 6 and the male buckle 5 are separated, which is convenient for installation and disassembly.

[0051] By setting the female buckle 6 to be a 316 stainless steel sheet, the 316 stainless steel will not release transition metals, which can effectively avoid the influence of transition metals on the whiteness measurement results.

[0052] Example 4

[0053] In this embodiment, as a preferred embodiment of the present utility model, the specific structure is as follows Figure 1 As shown, it discloses the following improvement based on the implementation mode 3: the upper funnel 1 and the lower funnel 2 are both made of pp material, and a seal 8 is provided at the connection between the upper funnel 1 and the lower funnel 2. The seals 8 are two and are rubber rings.

[0054] By setting the upper funnel 1 and the lower funnel 2 to be made of PP material, the funnel has the advantages of being light, environmentally friendly, resistant to heavy pressure and impact, chemically resistant and resistant to high temperature.

[0055] By providing the seal 8, it is possible to prevent the liquid from leaking out.

[0056] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various forms of implementation methods under the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the scope of protection of this embodiment. The scope of protection of this embodiment shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A detachable Buchner funnel, characterized in that: The invention comprises an upper funnel (1) and a lower funnel (2), wherein the upper funnel (1) and the lower funnel (2) are detachably connected, a filter hole body (3) is arranged in the lower funnel (2), and a buffer slope (4) is arranged from the upper edge of the lower funnel (2) to the filter hole body (3).

2. A detachable Buchner funnel according to claim 1, characterized in that: The included angle between the buffer slope (4) and the filter hole body (3) is 110°-120°.

3. A detachable Buchner funnel according to claim 2, characterized in that: The included angle between the buffer slope (4) and the filter hole body (3) is 115°.

4. A detachable Buchner funnel according to any one of claims 1 to 3, characterized in that: The upper funnel (1) and the lower funnel (2) are connected via a buckle.

5. A detachable Buchner funnel according to claim 4, characterized in that: The upper funnel (1) is provided with a male buckle (5), and the lower funnel (2) is provided with a female buckle (6).

6. A detachable Buchner funnel according to claim 5, characterized in that: The male buckle (5) is arranged in a ring shape on the upper funnel (1).

7. A detachable Buchner funnel according to claim 5, characterized in that: There are at least two female buckles (6), and the female buckles (6) are evenly arranged on the lower funnel (2).

8. A detachable Buchner funnel according to claim 5, characterized in that: The female buckle (6) is connected to the lower funnel (2) via a rotating shaft (7).

9. A detachable Buchner funnel according to claim 1, characterized in that: A sealing member (8) is provided at the connection between the upper funnel (1) and the lower funnel (2).

10. A detachable Buchner funnel according to claim 9, characterized in that: There are two sealing members (8).

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