Detachable and washable Buchner funnel

Abstract

The detachable and washable Buchner funnel comprises a funnel outer shell and a filtering inner shell, the filtering inner shell is arranged in the funnel outer shell, an extension pipe is arranged at the bottom end of the funnel outer shell, a leakage cylinder is fixedly installed at the bottom end of the extension pipe, a lower supporting ring is fixedly installed on the inner wall of the funnel outer shell, and the lower supporting ring is fixedly installed on the inner wall of the funnel outer shell. A positioning block is fixedly installed on the upper surface of the lower supporting ring, and a limiting block is fixedly installed on the outer surface of the bottom end of the filtering inner shell. According to the Buchner funnel, the funnel outer shell, the filtering inner shell, the rotating block, the extending pipe, the leakage cylinder, the connecting pipe, the connecting groove, the positioning block, the limiting block, the inserting rod, the upper supporting ring and other components are matched, so that the function of disassembling the Buchner funnel is achieved, the arrangement mode of an existing Buchner funnel is changed, and the Buchner funnel can be disassembled and washed; normal use of the Buchner funnel is guaranteed, meanwhile, residues are prevented from adhering to the interior of the Buchner funnel, the purity of purified substances is guaranteed, and the practicability of the Buchner funnel is improved.

Description

Technical Field

[0001] This utility model relates to the field of Buchner funnel technology, and in particular to a detachable and washable Buchner funnel. Background Technology

[0002] Buchner funnels are ceramic instruments used in laboratories, though some are made of plastic. They are used for filtration using vacuum or negative pressure suction. They are flat cylindrical in shape with many small holes on the bottom and a narrow cylindrical outlet. They are commonly used in organic chemistry experiments to extract crystals. After filtration, a small amount of pure solvent can be used to wash away impurities on the surface of the crystals.

[0003] In the existing technology, most Buchner funnels are integrally molded. This design makes it inconvenient to clean the Buchner funnel after use, which affects its normal use. At the same time, it is easy for residues to stick to the inside of the Buchner funnel, affecting the purity of the purified product in the experiment and reducing the practicality of the Buchner funnel. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a detachable and washable Buchner funnel.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a detachable and washable Buchner funnel, comprising a funnel shell and a filter inner shell, wherein the filter inner shell is disposed inside the funnel shell, an extension tube is provided at the bottom end of the funnel shell, a funnel cylinder is fixedly installed at the bottom end of the extension tube, a lower support ring is fixedly installed on the inner wall of the funnel shell, a positioning block is fixedly installed on the upper surface of the lower support ring, a limit block is fixedly installed on the outer surface of the bottom end of the filter inner shell, an insertion rod is fixedly installed on the upper surface of the limit block, an upper support ring is fixedly installed on the outer surface of the top end of the filter inner shell, a fixing plate is fixedly installed on the inner wall of the funnel shell, a plurality of springs are fixedly installed on the upper surface of the fixing plate, a top plate is fixedly installed on the top end of the springs, and a sealing assembly is provided on the outer surface of the upper support ring.

[0006] As a further description of the above technical solution:

[0007] The inner wall at the bottom of the filter inner shell has a water leakage hole, and a rotating block is fixedly installed at the middle position of the inner wall at the bottom of the filter inner shell.

[0008] As a further description of the above technical solution:

[0009] A connecting pipe is fixedly installed at the bottom of the funnel shell, and a connecting groove is opened on the inner wall of the extension pipe. The outer surface of the connecting pipe is threadedly connected to the inner wall of the connecting groove.

[0010] As a further description of the above technical solution:

[0011] The positioning block is L-shaped, and the limiting block is slidably connected to the inner wall of the positioning block. The inner wall at the top of the positioning block has a socket for insertion into the insertion rod.

[0012] As a further description of the above technical solution:

[0013] The sealing assembly includes a mounting groove and a sealing ring. The mounting groove is formed on the outer surface of the upper support ring, and the sealing ring is disposed inside the mounting groove. A fixing block is fixedly installed on the outer wall of one end of the sealing ring, and a fixing groove is formed on the outer wall of the other end of the sealing ring. A protrusion is fixedly installed on the inner wall of the fixing groove.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the openings at both ends of the sealing ring is fixedly installed with a locking block, and the inner wall of the mounting groove has two slots that are respectively inserted into the corresponding locking blocks.

[0016] As a further description of the above technical solution:

[0017] The fixing block is slidably connected to the inner wall of the fixing groove, and the outer surface of the fixing block is provided with a groove that matches the protrusion.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, this detachable and washable Buchner funnel, through the coordination of components such as the funnel shell, filter inner shell, rotating block, extension tube, funnel cylinder, connecting tube, connecting groove, lower support ring, positioning block, limiting block, insertion rod, upper support ring, fixing plate, spring, and top plate, realizes the function of disassembling the Buchner funnel. It changes the existing Buchner funnel setting method, making the Buchner funnel disassembled and washed, ensuring the normal use of the Buchner funnel, while preventing residues from sticking to the inside of the Buchner funnel, ensuring the purity of the purified product, and improving the practicality of the Buchner funnel.

[0020] 2. Compared with the existing technology, this detachable and washable Buchner funnel, through the cooperation of components such as mounting groove, sealing ring, locking block, fixing block, fixing groove and protrusion, achieves the function of sealing the connection between the funnel shell and the filter inner shell. It can prevent the liquid to be purified from leaking down the connection between the funnel shell and the filter inner shell, ensuring the purity of the purified product. At the same time, the sealing ring can be easily and quickly disassembled for easy cleaning. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a detachable and washable Buchner funnel proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the rotating block structure of a detachable and washable Buchner funnel proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the connecting groove structure of a detachable and washable Buchner funnel proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the filter inner shell structure of a detachable and washable Buchner funnel proposed in this utility model.

[0025] Figure 5 This is a schematic diagram of the sealing assembly structure of a detachable and washable Buchner funnel proposed in this utility model.

[0026] Figure 6 This is a schematic diagram of the fixing block structure of a detachable and washable Buchner funnel proposed in this utility model.

[0027] Legend:

[0028] 1. Funnel outer shell; 2. Filter inner shell; 3. Rotating block; 4. Extension tube; 5. Filter cylinder; 6. Connecting tube; 7. Connecting groove; 8. Lower support ring; 9. Positioning block; 10. Limiting block; 11. Insert rod; 12. Upper support ring; 13. Fixing plate; 14. Spring; 15. Top plate; 16. Mounting groove; 17. Sealing ring; 18. Clamping block; 19. Fixing block; 20. Fixing groove; 21. Protrusion. Detailed Implementation

[0029] 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.

[0030] Reference Figures 1 to 6 This utility model provides a detachable and washable Buchner funnel, comprising a funnel shell 1 and a filter inner shell 2. The filter inner shell 2 is disposed inside the funnel shell 1. A water leakage hole is provided on the inner wall at the bottom end of the filter inner shell 2. A rotating block 3 is fixedly installed at the middle position of the inner wall at the bottom end of the filter inner shell 2. An extension tube 4 is provided at the bottom end of the funnel shell 1. A funnel cylinder 5 is fixedly installed at the bottom end of the extension tube 4. A connecting tube 6 is fixedly installed at the bottom end of the funnel shell 1. A connecting groove 7 is provided on the inner wall of the extension tube 4. The outer surface of the connecting tube 6 is threadedly connected to the inner wall of the connecting groove 7.

[0031] To fix the filter inner shell 2, a lower support ring 8 is fixedly installed on the inner wall of the funnel outer shell 1, a positioning block 9 is fixedly installed on the upper surface of the lower support ring 8, a limiting block 10 is fixedly installed on the outer surface of the bottom of the filter inner shell 2, the positioning block 9 is L-shaped, the limiting block 10 is slidably connected to the inner wall of the positioning block 9, an insertion rod 11 is fixedly installed on the upper surface of the limiting block 10, an insertion hole for insertion of the insertion rod 11 is opened on the inner wall of the top of the positioning block 9, an upper support ring 12 is fixedly installed on the outer surface of the top of the filter inner shell 2, a fixing plate 13 is fixedly installed on the inner wall of the funnel outer shell 1, a plurality of springs 14 are fixedly installed on the upper surface of the fixing plate 13, and a top plate 15 is fixedly installed on the top of the springs 14.

[0032] By setting up a funnel outer shell 1, a filter inner shell 2, a rotating block 3, an extension tube 4, a funnel cylinder 5, a connecting tube 6, a connecting groove 7, a lower support ring 8, a positioning block 9, a limiting block 10, an insertion rod 11, an upper support ring 12, a fixing plate 13, a spring 14, and a top plate 15, the function of disassembling the Buchner funnel is realized. This changes the existing setup of the Buchner funnel, allowing it to be disassembled and cleaned, ensuring its normal use, while preventing residues from sticking to the inside of the Buchner funnel, ensuring the purity of the purified product, and improving the practicality of the Buchner funnel.

[0033] A sealing assembly is provided on the outer surface of the upper support ring 12. The sealing assembly includes a mounting groove 16 and a sealing ring 17. The mounting groove 16 is opened on the outer surface of the upper support ring 12. The sealing ring 17 is located inside the mounting groove 16. The inner walls of the openings at both ends of the sealing ring 17 are fixedly installed with locking blocks 18. The inner wall of the mounting groove 16 has two locking slots that are respectively inserted into the corresponding locking blocks 18. A fixing block 19 is fixedly installed on the outer wall of one end of the sealing ring 17. A fixing groove 20 is opened on the outer wall of the other end of the sealing ring 17. The fixing block 19 is slidably connected to the inner wall of the fixing groove 20. A protrusion 21 is fixedly installed on the inner wall of the fixing groove 20. The outer surface of the fixing block 19 has a groove that matches the protrusion 21.

[0034] By setting the mounting groove 16, sealing ring 17, locking block 18, fixing block 19, fixing groove 20 and protrusion 21, the connection between the funnel outer shell 1 and the filter inner shell 2 is sealed, which can prevent the liquid to be purified from leaking down the connection between the funnel outer shell 1 and the filter inner shell 2, ensuring the purity of the purified product. At the same time, the sealing ring 17 can be easily and quickly disassembled for cleaning.

[0035] Working principle: When cleaning the Buchner funnel, first rotate the funnel cylinder 5 and the extension tube 4, so that the connecting tube 6 rotates outward from the inside of the connecting groove 7. After the connecting tube 6 rotates out of the inside of the connecting groove 7, the funnel cylinder 5 separates from the funnel outer shell 1. Then, press down on the filter inner shell 2, so that the filter inner shell 2 drives the upper support ring 12 and the limiting block 10 to slide downward inside the funnel outer shell 1. The upper support ring 12 presses down on the top plate 15, so that the spring 14 is compressed and deformed. At the same time, the insertion rod 11 slides out from the inside of the insertion hole. Then, rotate the filter inner shell 2 counterclockwise through the rotating block 3, so that the filter inner shell 2 drives the limiting block 10 to rotate out from the inside of the positioning block 9, releasing the restriction on the filter inner shell 2. Then, pull the filter inner shell 2 upward to pull the filter inner shell 2 out from the inside of the funnel outer shell 1, completing the disassembly of the Buchner funnel. Finally, clean it. After cleaning, reverse the above operation to reassemble the Buchner funnel.

[0036] When the sealing ring 17 needs to be cleaned, pull the fixing block 19 so that the fixing block 19 slides outward from the inside of the fixing groove 20, and at the same time, the protrusion 21 slides out from the inside of the groove. After the fixing block 19 slides out from the inside of the fixing groove 20, the sealing ring 17 separates from its end. Then, remove the sealing ring 17 from the inside of the mounting groove 16 so that the locking block 18 slides out from the inside of the locking groove. The sealing ring 17 separates from the filter inner shell 2, and the inner wall of the mounting groove 16 and the sealing ring 17 can be cleaned. After cleaning, repeat the above operation to reinstall the sealing ring 17 onto the filter inner shell 2.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A washable Buchner funnel, comprising a funnel shell (1) and a filter inner shell (2), characterized in that: The filter inner shell (2) is located inside the funnel outer shell (1). An extension tube (4) is provided at the bottom end of the funnel outer shell (1). A funnel cylinder (5) is fixedly installed at the bottom end of the extension tube (4). A lower support ring (8) is fixedly installed on the inner wall of the funnel outer shell (1). A positioning block (9) is fixedly installed on the upper surface of the lower support ring (8). A limit block (10) is fixedly installed on the outer surface of the bottom end of the filter inner shell (2). An insertion rod (11) is fixedly installed on the upper surface of the limit block (10). An upper support ring (12) is fixedly installed on the outer surface of the top end of the filter inner shell (2). A fixing plate (13) is fixedly installed on the inner wall of the funnel outer shell (1). A plurality of springs (14) are fixedly installed on the upper surface of the fixing plate (13). A top plate (15) is fixedly installed on the top end of the springs (14). A sealing component is provided on the outer surface of the upper support ring (12).

2. The detachable and washable Buchner funnel according to claim 1, characterized in that: The inner wall of the bottom end of the filter inner shell (2) is provided with a water leakage hole, and a rotating block (3) is fixedly installed in the middle position of the inner wall of the bottom end of the filter inner shell (2).

3. A detachable and washable Buchner funnel according to claim 1, characterized in that: A connecting pipe (6) is fixedly installed at the bottom of the funnel shell (1), and a connecting groove (7) is opened on the inner wall of the extension pipe (4). The outer surface of the connecting pipe (6) is threadedly connected to the inner wall of the connecting groove (7).

4. A detachable and washable Buchner funnel according to claim 1, characterized in that: The positioning block (9) is L-shaped, the limiting block (10) is slidably connected to the inner wall of the positioning block (9), and the inner wall at the top of the positioning block (9) is provided with a socket for insertion into the insertion rod (11).

5. A detachable and washable Buchner funnel according to claim 1, characterized in that: The sealing assembly includes a mounting groove (16) and a sealing ring (17). The mounting groove (16) is formed on the outer surface of the upper support ring (12). The sealing ring (17) is set inside the mounting groove (16). A fixing block (19) is fixedly installed on the outer wall of one end of the sealing ring (17). A fixing groove (20) is formed on the outer wall of the other end of the sealing ring (17). A protrusion (21) is fixedly installed on the inner wall of the fixing groove (20).

6. A detachable and washable Buchner funnel according to claim 5, characterized in that: The inner wall of the openings at both ends of the sealing ring (17) is fixedly installed with a locking block (18), and the inner wall of the mounting groove (16) has two slots that are respectively inserted into the corresponding locking block (18).

7. A detachable and washable Buchner funnel according to claim 5, characterized in that: The fixing block (19) is slidably connected to the inner wall of the fixing groove (20), and the outer surface of the fixing block (19) is provided with a groove that matches the protrusion (21).

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