Burette support

Abstract

The utility model belongs to the field of laboratory devices, and relates to a burette support which comprises a base, a stand column, a moving part, a rotating shaft, a rotating rod and a butterfly clamp, the moving part is sleeved on the stand column and can slide up and down, the moving part can be fixed on the stand column through a moving part fixing nut, and the moving part, the rotating rod and the butterfly clamp can be connected through the rotating shaft. A plurality of burettes can be installed at the same time by installing a plurality of moving pieces, 360-degree space with the stand column as the center can be fully utilized by adjusting the directions of the moving pieces, the height of the burettes can be freely adjusted by adjusting the angle of the rotating shaft, use is flexible, convenient and fast, and the working efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of laboratory devices and relates to a burette support, in particular to a burette support which can fix a plurality of burettes and has adjustable positions. Background Art

[0002] Titration is one of the commonly used chemical analysis methods. It can be used for quantitative analysis of the content of a certain component in a sample and is widely used in the fields of environment, food, medicine, chemical industry, etc. Different projects require different titration reagents, which means that multiple burettes need to be used. The existing burette stand can fix a small number of burettes, making it difficult to conduct experiments on multiple projects at the same time. Therefore, a burette stand that can be operated by multiple experimenters at the same time and can make full use of space is needed to improve work efficiency. Summary of the invention

[0003] The utility model is beneficial in that it can provide a burette support which can be equipped with a plurality of burettes, the positions of the burettes can be adjusted, and the space can be fully utilized.

[0004] In order to realize the above functions, the utility model relates to a burette support, which comprises a base 1, a column 2, a moving part 3, a rotating shaft 5, a rotating rod 7 and a butterfly clamp 8.

[0005] The column 2 is fixed on the base 1 , and the moving member 3 is sleeved on the column 2 and can slide up and down. A plurality of moving members 3 can be installed on the column 2 according to usage requirements.

[0006] The movable member 3 is a hollow cylinder with two cylindrical rods fixed at the side ends. One cylindrical rod is solid and extends into the hollow cylinder, and the other cylindrical rod is provided with a hollow internal threaded through hole, which can cooperate with the movable member fixing nut 4. By tightening the movable member fixing nut 4, the movable member 3 can be fixed on the column 2.

[0007] The rotating shaft 5 comprises a rotating shaft front cover 51 and a rotating shaft rear cover 52 . A rotating shaft tension knob 6 is mounted on the rotating shaft 5 . The rotating shaft tension knob 6 comprises a rotating shaft tension knob nut 61 and a rotating shaft tension knob nut sleeve 62 .

[0008] The rotating rod 7 is provided with a through hole, the inner diameter of which is larger than the outer diameter of the rotating shaft tightening knob nut 61 .

[0009] The rotating shaft front cover 51 and the rotating shaft rear cover 52 are provided with opposite through holes on the upper and lower parts for the rotating rod 7 to be inserted, and the through hole provided at the center of the back side is provided for the rotating shaft tightening knob nut 61 to be inserted, a groove 521 is provided around the edge of the rotating shaft rear cover 52, and a protrusion 511 is provided around the edge of the rotating shaft front cover 51, and the protrusion 511 can be embedded in the groove 521, so that the rotating shaft front cover 51 and the rotating shaft rear cover 52 can rotate relative to each other.

[0010] The rotating shaft tension knob nut 62 is provided with an internal thread and can cooperate with the rotating shaft tension knob nut 61. Tightening the rotating shaft tension knob nut 62 can prevent the relative rotation of the rotating shaft front cover 51 and the rotating shaft rear cover 52 to fix the angle of the rotating rod 7.

[0011] The moving member 3 , the rotating rod 7 and the butterfly clamp 8 can be connected via the rotating shaft 5 .

[0012] The butterfly clip 8 is provided with a bubble level 9 .

[0013] The base 1 and the column 2 are made of metal, and the moving part 3, the rotating shaft 5, the rotating rod 7 and the butterfly clip 8 are made of plastic.

[0014] Beneficial effects: The utility model relates to a burette bracket. When in use, the moving part is fixed on the column, and the moving part, the rotating rod and the butterfly clamp are connected by a rotating shaft. By installing several moving parts, multiple burettes can be used at the same time. The height of the burette can be adjusted by adjusting the angle of the rotating shaft. The angle of the rotating fixed part can realize 360-degree space utilization centered on the column. The use is flexible, convenient and fast, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 .Schematic diagram of the structure of a burette support

[0016] Figure 2 .Schematic diagram of the structure of a burette support moving part

[0017] Figure 3 .Top view of a burette support moving part

[0018] Figure 4 .Schematic diagram of the structure of a fixing nut of a burette support moving part

[0019] Figure 5 .Schematic diagram of the structure of a rotating rod of a burette support

[0020] Figure 6 . Schematic diagram of the combined structure of a burette support rotating rod, rotating shaft, and rotating shaft tension knob

[0021] Figure 7 . Schematic diagram of the exploded structure of a burette support rotating rod, rotating shaft, and rotating shaft tension knob

[0022] Figure 8.A cross-sectional view of a rotating shaft tension knob nut sleeve of a burette stand, wherein: 1. base; 2. column; 3. moving part; 4. moving part fixing nut; 5. rotating shaft; 51. rotating shaft front cover; 52. rotating shaft rear cover; 511. protrusion; 521. groove; 6. rotating shaft tension knob; 61. rotating shaft tension knob nut; 62. rotating shaft tension knob nut; 7. rotating rod; 8. butterfly clamp; 9. bubble level; 10. burette. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] Embodiment 1

[0025] Put the moving part on the column, tighten the moving part fixing nut to fix the moving part in position, use the rotating shaft to connect the moving part, rotating rod and butterfly clamp, adjust the rotating shaft angle so that the butterfly clamp is at a suitable height, and use the bubble level to ensure the level of the butterfly clamp, tighten the rotating shaft tension knob, fix the position of each component, and put the burette into the butterfly clamp for use. By adjusting the direction of the moving part, the 360-degree space around the column can be fully utilized. By adjusting the rotating shaft, the height of the burette can be freely adjusted, so that multiple people can operate at the same time and improve work efficiency. After use, the rotating rod can be folded and put away by adjusting the rotating shaft to save storage space.

[0026] The above embodiments are only used to illustrate the utility model, and are not intended to limit the patent of the utility model. It should be pointed out that a person skilled in the art can make various changes and modifications without departing from the scope of the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the coverage of the claims of the utility model.

Claims

1. A burette stand, characterized in that: The invention comprises a base (1), a column (2), a moving part (3), a rotating shaft (5), a rotating rod (7) and a butterfly clamp (8), wherein the column (2) is fixed on the base (1), the moving part (3) is sleeved on the column (2) and can slide up and down, the moving part (3) can be fixed on the column (2) by a moving part fixing nut (4), the rotating shaft (5) comprises a rotating shaft front cover (51) and a rotating shaft rear cover (52), a rotating shaft loosening knob (6) is arranged on the rotating shaft (5), the rotating shaft loosening knob (6) comprises a rotating shaft loosening knob nut (61) and a rotating shaft loosening knob screw sleeve (62), and the moving part (3), the rotating rod (7) and the butterfly clamp (8) are connected via the rotating shaft (5).

2. A burette support according to claim 1, characterized in that: The moving part (3) is a hollow cylinder with two cylindrical rods fixed at the side ends, one cylindrical rod is solid and extends into the hollow cylinder, and the other cylindrical rod is provided with a hollow internal threaded through hole which can be matched with the moving part fixing nut (4).

3. A burette stand according to claim 1, characterized in that: The rotating rod (7) is provided with a through hole, the inner diameter of which is larger than the outer diameter of the rotating shaft loosening knob nut (61).

4. A burette support according to claim 1, characterized in that: The rotating shaft front cover (51) and the rotating shaft rear cover (52) are provided with opposite through holes on the upper and lower parts, through which the rotating rod (7) can be inserted, and the through hole provided at the center of the back part can be inserted into the rotating shaft loosening knob nut (61). The rotating shaft rear cover (52) is provided with a groove (521) around the edge, and the rotating shaft front cover (51) is provided with a protrusion (511) around the edge. The protrusion (511) can be embedded in the groove (521), so that the rotating shaft front cover (51) and the rotating shaft rear cover (52) can rotate relative to each other.

5. A burette stand according to claim 1, characterized in that: The rotating shaft loosening knob screw sleeve (62) is provided with an internal thread and can be matched with the rotating shaft loosening knob nut (61).

6. A burette stand according to claim 1, characterized in that: The butterfly clip (8) is provided with a bubble level (9).

7. A burette stand according to claim 1, characterized in that: The base (1) and the column (2) are made of metal, and the moving part (3), the rotating shaft (5), the rotating rod (7) and the butterfly clip (8) are made of plastic.

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