A new distillation flask structure suitable for Kjeldahl nitrogen determination instrument

Abstract

The utility model provides a novel distilling flask structure suitable for kjeldahl nitrogen determination appearance, concretely relates to kjeldahl nitrogen determination appearance technical field, including distilling flask and the air outlet of one side top arrangement, its characterized in that: the inside of distilling flask is equipped with three layers of barrier structure from below to above in proper order: first layer barrier structure sets up in the upper position of the middle part in distilling flask, is composed of inverted conical cover and first cylinder, inverted conical cover both sides edge and distilling flask inner wall sealedly connected, its cone tip fixedly connected first cylinder, the utility model discloses the inverted conical cover of first layer barrier structure covers the high -risk splashing area of distilling flask middle part with slope design, the through design of its cone tip and first cylinder forms gravity guiding return flow channel. After the splashing liquid drop hits the slope of conical cover, under the action of gravity, along the cone wall gathers to the cone tip, and the first cylinder accurate flow guide reaches the bottom of nitrogen determination pipe, and the problem that the sample lingers in the middle part of bottle body is solved thoroughly.

Claims

1. A novel distillation flask structure suitable for a Kjeldahl nitrogen analyzer, comprising a distillation flask (1) and an outlet (2) located on the top side, characterized in that: The distillation flask (1) has three layers of barrier structures arranged from bottom to top, including a first barrier structure (3), a second barrier structure (4), and a third barrier structure (5). The first barrier structure (3) is located in the upper middle part of the distillation flask (1) and consists of an inverted conical cover (31) and a first cylinder (32). The two sides of the inverted conical cover (31) are sealed to the inner wall of the distillation flask (1), and its cone tip is fixedly connected to the first cylinder (32). The second layer of barrier structure (4) is located above the first layer of barrier structure (3) and is composed of a second cylinder (41). The diameter of the second cylinder (41) is larger than the diameter of the first cylinder (32) inside the first layer of barrier structure (3) and smaller than the inner wall of the distillation flask (1). The third barrier structure (5) is composed of a conical cover (51), the top of which is fixedly connected to the inner wall of the top of the distillation flask (1), and the inner wall of the conical cover (51) is fixedly connected to the top of the second cylinder (41). The vent (2) extends into the interior of the distillation flask (1), with its opening end suspended above the third barrier structure (5). The third barrier structure (5) can again block any splashing of samples and reagents.

2. The novel distillation flask structure for a Kjeldahl nitrogen analyzer as described in claim 1, characterized in that: Both the first cylinder (32) and the second cylinder (41) have a hollow interior design.

3. A new type of distillation flask structure suitable for Kjeldahl apparatus according to claim 1, characterized in that: The inverted conical cover (31) is provided with an air passage hole (33) at the connection between it and the first cylinder (32), and the gas generated after steam distillation of the sample can pass through the air passage hole (33). ​ 4. A new type of distillation flask structure suitable for Kjeldahl apparatus according to claim 1, characterized in that: The inverted conical hood (31) structure can effectively block splashed samples and reagents, and rely on gravity to allow the samples or reagents stuck on the inverted conical hood (31) structure to return to the nitrogen determination tube. ​ 5. The novel distillation flask structure for a Kjeldahl nitrogen analyzer as described in claim 1, characterized in that: The bottom of the second cylinder (41) is set inside the inverted conical cover (31), and there is a gap between the surfaces that do not contact each other. The gap serves as the first channel (42) for steam to pass through.

6. A new type of distillation flask structure suitable for Kjeldahl apparatus according to claim 3, characterized in that: The second cylindrical (41) structure can collect the sample or reagent splashed through the air passage (33) in the first barrier structure (3) and return it to the nitrogen determination tube through the air passage (33).

7. The novel distillation flask structure for a Kjeldahl nitrogen analyzer as described in claim 1, characterized in that: A gap is left between the edge of the conical hood (51) and the inner wall of the distillation flask (1). The gap serves as a second channel (52) for the steam to pass through. The conical structure can effectively collect residual samples or reagents that have passed through the first barrier structure (3) and the second barrier structure (4), and then return them to the nitrogen determination tube through the second cylinder (41), the inverted conical hood (31), the air passage (33), and the first cylinder (32).

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