CN219245172U - Acid reflux unit is cleared up to graphite - Google Patents

Abstract

The utility model discloses a graphite digestion acid reflux device, which belongs to the field of food safety and comprises a hollow semicircle body, wherein a tail rod is arranged on one side of the hollow semicircle body far away from an opening end, a skirt ring is arranged at the opening end of the hollow semicircle body, vent holes are formed in the surface of the hollow semicircle body, through holes are formed in the hollow semicircle body and the tail rod together, and the two vent holes are symmetrically distributed about the central line of the hollow semicircle body. According to the graphite digestion acid reflux device, 1, polytetrafluoroethylene is selected as a manufacturing material, so that the problem of heavy metal pollution can be prevented; 2. the design of the skirt ring can ensure that the whole graphite digestion acid reflux device is fixed at the pipe orifice of the graphite digestion pipe; 3. the design of the vent hole can release partial pressure in the digestion process, so that the acid reflux device is prevented from flushing out of the pipe orifice due to suffocation; 4. the tail rod is designed, so that acid liquor can be refluxed, and meanwhile, the acid liquor is convenient to add in the middle.

Description

Acid reflux unit is cleared up to graphite

Technical Field

The utility model relates to the field of food safety, in particular to the field of graphite digestion acid reflux devices.

Background

Currently, in food heavy metal detection, common methods for sample digestion include wet digestion, graphite digestion and microwave digestion. Among them, graphite digestion is most widely used because of good cost performance and uniform and stable digestion effect. However, when graphite is used for digestion, the height of the digestion tube (generally made of polytetrafluoroethylene) is relatively low (less than or equal to 10 cm), volatile elements such as mercury, lead and arsenic are easy to volatilize and lose during detection, the accuracy of detection results is affected, and meanwhile, the use amount of acid is increased, so that the determination of the volatile elements is realized, and the use amount of acid is reduced.

Disclosure of Invention

The utility model mainly aims to provide a graphite digestion acid reflux device which can effectively solve the problems in the background technology.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a graphite digestion acid reflux unit, includes cavity semicircle sphere, one side that the open end was kept away from to cavity semicircle sphere is provided with the tail-rod, the open end of cavity semicircle sphere is provided with the skirt ring, the air vent has been seted up on cavity semicircle sphere's surface.

The utility model is further improved in that the hollow semicircle body and the tail rod are provided with through holes together, and the two through holes are symmetrically distributed about the central line of the hollow semicircle body.

Compared with the prior art, the utility model has the following beneficial effects: 1. polytetrafluoroethylene is selected as a manufacturing material, so that the problem of heavy metal pollution can be prevented; 2. the design of the skirt ring can ensure that the whole graphite digestion acid reflux device is fixed at the pipe orifice of the graphite digestion pipe; 3. the design of the vent hole can release partial pressure in the digestion process, so that the acid reflux device is prevented from flushing out of the pipe orifice due to suffocation; 4. the tail rod is designed, so that acid liquid can be refluxed, and meanwhile, the acid liquid is convenient to add in the middle; finally, the problem of loss of heavy metals to volatile element determination in graphite digestion determination food is solved, and meanwhile, the use amount of acid in the digestion process is reduced, so that the aims of protecting the environment and the health of human bodies are achieved.

Drawings

FIG. 1 is a schematic view of the usage state structure of the present utility model.

FIG. 2 is a schematic cross-sectional view of the present utility model.

In the figure: 1. hollow hemispheres; 3. tail rod; 4. a vent hole; 5. a skirt ring.

Detailed Description

In order that the technical means, the creation characteristics, the achievement of the objects and the effects of the present utility model may be easily understood, it should be noted that in the description of the present utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "a", "an", "the" and "the" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The utility model is further described below in conjunction with the detailed description.

Examples

As shown in fig. 1 and 2, a graphite acid digestion reflux device comprises a hollow semicircle body 1, wherein a tail rod 3 is arranged on one side, far away from an opening end, of the hollow semicircle body 1, a skirt ring 5 is arranged at the opening end of the hollow semicircle body 1, vent holes 4 are formed in the surface of the hollow semicircle body 1, through holes are jointly formed in the hollow semicircle body 1 and the tail rod 3, and the two vent holes 4 are symmetrically distributed with respect to the central line of the hollow semicircle body 1.

When the graphite digestion acid reflux device is used, firstly, a proper amount of sample is weighed into a graphite digestion tube A, 10mL of concentrated nitric acid is added, the graphite digestion acid reflux device is covered, and the whole is placed into a graphite digestion instrument to be digested according to a set procedure. In the digestion process, acid vapor generated by heating is evaporated upwards under the action of air thermodynamics, and the acid vapor only floats upwards and does not come out from a through hole at the bottom of the tail rod 3 because the tail rod 3 is lower than the bottom of the hollow semicircle sphere 1, and then is condensed and flows back down after encountering the spherical surface of the hollow semicircle sphere 1 to continue participating in digestion. And volatile elements cannot be exposed, so that the aim of ensuring the detection effect is fulfilled. In addition, the vent holes 4 on the surface of the hollow semicircle sphere 1 can release part of the pressure generated in the digestion process. For individual samples which are difficult to digest, acid liquor can be added to the concave surface of the hollow hemispherical body 1 in the digestion process, and the acid liquor enters the graphite digestion tube A through the tail rod 3 part to strengthen the digestion effect on the samples.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (2)

1. The utility model provides a graphite digestion acid reflux unit, includes cavity semicircle sphere (1), its characterized in that: one side of the hollow semicircle sphere (1) far away from the opening end is provided with a tail rod (3), the opening end of the hollow semicircle sphere (1) is provided with a skirt ring (5), and the surface of the hollow semicircle sphere (1) is provided with a vent hole (4).

2. The graphite digestion acid reflux apparatus as set forth in claim 1, wherein: the hollow semicircle body (1) and the tail rod (3) are provided with through holes together, and the two vent holes (4) are symmetrically distributed about the central line of the hollow semicircle body (1).

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