A volumetric flask structure

Abstract

The utility model discloses a volumetric flask structure, including main part and with the neck part of main part intercommunication, the main part is straight cylinder, and the diameter of neck part is less than the diameter of main part, and the taper part is connected between main part and neck part, and the upper opening of neck part is provided with the bottle plug, and the outside surface of main part, neck part and taper part is provided with the scale line. Through adopting straight cylinder main part structure, avoid the liquid residual and the problem of hanging wall caused by traditional arc inner wall, especially for viscous or easy wet liquid, can realize more complete solution pouring and more thorough cleaning, thereby has promoted the accuracy of constant volume. Meanwhile, straight cylinder structure is easier to guarantee the uniformity of wall thickness and shape symmetry in the mould manufacturing and blowing process, compares traditional arc abdomen, has reduced the requirement to manufacturing technology, thereby has reduced the manufacturing difficulty and cost.

Description

Technical Field

[0001] This utility model relates to the field of laboratory glassware technology, specifically to a volumetric flask structure. Background Technology

[0002] Traditional volumetric flasks are typically pear-shaped or long-necked, with a rounded, convex belly. When pouring liquids (especially viscous or easily wetting liquids), the rounded inner wall can cause liquid residue to remain or adhere to the curved surface, making it difficult to pour out completely or clean thoroughly. This affects the completeness of solution transfer and the accuracy of volume determination. Furthermore, during volume determination, the liquid meniscus needs to be tangent to the mark, and the observer's line of sight must be horizontal to the mark. Because the rounded belly is a curved surface, even a slight deviation in the observation angle (not strictly perpendicular to the tangent) can lead to misjudgment of the meniscus's position, causing visual errors and affecting experimental accuracy. In addition, the mold manufacturing and blow molding processes for the rounded belly require high standards to ensure uniform wall thickness and symmetrical shape, increasing manufacturing difficulty and cost. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a volumetric flask structure with a straight cylindrical main body structure, which avoids the problems of liquid residue and wall adhesion caused by the traditional arc-shaped inner wall, and can achieve more complete solution pouring and more thorough cleaning, thereby improving the accuracy of volume determination and effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a volumetric flask structure, comprising a main body and a neck section connected to the main body, wherein the main body is cylindrical, the diameter of the neck section is smaller than the diameter of the main body, the main body and the neck section are connected by a conical section, a stopper is provided at the upper opening of the neck section, and graduation lines are provided on the outer surfaces of the main body, the neck section and the conical section.

[0005] As a preferred embodiment of this invention, the outer peripheral surface of the bottle stopper is provided with anti-slip texture.

[0006] As a preferred embodiment of this utility model, the inner surfaces of the main body, the bottleneck portion, and the tapered portion are provided with an anti-stick coating.

[0007] As a preferred technical solution of this utility model, a sleeve is sleeved on the bottom outer side of the main body, a retaining ring is provided on the upper outer side of the bottleneck, and two slide rails are symmetrically arranged between the retaining ring and the sleeve along the bottleneck, the conical part and the outer side of the main body. A slider is slidably arranged on the slide rail, and an arc-shaped telescopic rod is provided on the side surface of the two sliders. An observation mirror is provided between the two telescopic rods.

[0008] As a preferred embodiment of this utility model, the telescopic rod includes multiple sliding rod sections.

[0009] Compared with existing technologies, the advantages of this invention are as follows: By adopting a straight cylindrical main structure, the problems of liquid residue and wall adhesion caused by the traditional arc-shaped inner wall are avoided. Especially for viscous or easily wettable liquids, it enables more complete solution pouring and more thorough cleaning, thereby improving the accuracy of volume determination. At the same time, the straight cylindrical structure makes it easier to ensure uniform wall thickness and symmetrical shape during mold manufacturing and blowing processes. Compared with the traditional arc-shaped belly, it reduces the requirements for manufacturing processes, thereby reducing manufacturing difficulty and cost. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 4 This is a structural schematic diagram of Embodiment 3 of the present invention; Figure 5 This utility model Figure 4 A schematic diagram of the side view structure; Figure 6 This utility model Figure 4 A schematic diagram of the internal structure.

[0011] In the diagram: 1. Main body, 2. Bottle neck, 3. Stopper, 4. Anti-slip groove, 5. Scale line, 6. Anti-stick coating, 7. Sleeve, 8. Slide rail, 9. Stop ring, 10. Slider, 11. Telescopic rod, 12. Observation mirror, 13. Liquid level sensor, 14. Temperature sensor, 15. Sealing gasket, 16. Control circuit board, 17. Display screen, 18. Control switch, 19. Charging port. Detailed Implementation

[0012] 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.

[0013] Example 1, please refer to Figure 1-2This utility model provides a technical solution: a volumetric flask structure, including a main body 1 and a neck section 2 communicating with the main body 1. The main body 1 is cylindrical, and the diameter of the neck section 2 is smaller than the diameter of the main body 1. The main body 1 and the neck section 2 are connected by a conical section. By adopting a cylindrical main body structure, the problems of liquid residue and wall adhesion caused by the traditional arc-shaped inner wall are avoided. Especially for viscous or easily wettable liquids, it can achieve more complete solution pouring and more thorough cleaning, thereby improving the accuracy of volume determination. At the same time, the cylindrical structure makes it easier to ensure uniform wall thickness and symmetrical shape during mold manufacturing and blowing. Compared with the traditional arc-shaped belly, it reduces the requirements for manufacturing process, thereby reducing manufacturing difficulty and cost.

[0014] The outer surfaces of the main body 1, the neck section 2, and the conical section are provided with graduation lines 5. The graduation lines 5 on the cylindrical main body 1 make it more intuitive and accurate to observe the tangency of the liquid meniscus with the graduation lines 5 during the volume adjustment operation. The line of sight does not need to be strictly perpendicular to the tangent of the curved surface during observation, which effectively reduces misjudgment caused by angular deviation, reduces line of sight error, and improves the accuracy of the experiment.

[0015] In a preferred embodiment, a stopper 3 is provided at the upper opening of the neck section 2 for sealing the volumetric flask. The outer peripheral surface of the stopper 3 is provided with anti-slip texture, which increases the friction between the fingers and the surface of the stopper 3, so that even if the hands are wet or gloves are worn when opening or closing the stopper 3, slippage can be effectively prevented, making the operation more effortless and reliable.

[0016] In a preferred embodiment, the inner surfaces of the main body 1, the bottleneck portion 2, and the conical portion are provided with an anti-stick coating 6. The anti-stick coating 6 can be a hydrophobic coating such as a fluorosilicone modified polymer, a coating based on stearic acid or polydimethylsiloxane, or a hydrophilic coating such as a composite coating of tannic acid (TA) and 3-aminopropyltriethoxysilane (APTES), depending on the properties of the liquid used in the experiment.

[0017] Example 2, please refer to Figure 3This embodiment is largely the same as the previous embodiment, except that: a sleeve 7 is fitted onto the outer bottom of the main body 1, a retaining ring 9 is provided on the upper outer side of the neck 2, and two slide rails 8 are symmetrically arranged between the retaining ring 9 and the sleeve 7 along the neck 2, the conical part and the outer side of the main body 1. A slider 10 is slidably arranged on the slide rail 8, and an arc-shaped telescopic rod 11 is provided on the side surface of each slider 10. An observation mirror 12 is provided between the two telescopic rods 11. The observation mirror 12 is a magnifying glass. During the volumetric adjustment operation or when it is necessary to observe the liquid level in the volumetric flask, the position of the telescopic rod 11 and the slider 10 can be adjusted according to the liquid level to move the observation mirror 12 to a position where the liquid level is approximately the same. Then, the liquid level can be observed through the observation mirror 12. With the magnification of the magnifying glass, the relative position of the liquid meniscus and the scale line can be clearly presented, further reducing misjudgment caused by visual errors or viewpoint shifts and improving the accuracy of volumetric adjustment.

[0018] The slide rails 8 are located on both sides, occupying only a small part of the outer side of the main body 1, and do not affect the observation of the liquid and liquid level inside the volumetric flask.

[0019] In a preferred embodiment, the telescopic rod 11 includes multiple sliding rods, with adjacent sliding rods sliding against each other. A groove can be opened on the inner or outer side of the sliding rod, allowing another sliding rod to slide within it. Thus, when adjusting the observation mirror 12 to the main body 1, the bottleneck 2, and the conical part according to the liquid level, the length of the telescopic rod 11 can be flexibly adjusted according to the current distance between the two sliders 10, so that the observation mirror 12 can be moved to a suitable position.

[0020] Example 3, please refer to Figure 4-5 This embodiment is largely the same as the previous embodiment, except that: in the preferred embodiment, a liquid level sensor 13 is installed on the inner bottom upper surface of the main body 1. The liquid level sensor 13 is an ultra-thin, small-volume liquid level sensor, such as a liquid level sensor with model number JLS-WL or MPM489WZ4, which occupies a small volume and can be installed inside the main body 1.

[0021] The liquid level sensor 13 is electrically connected to the control circuit board 16 located inside the sleeve 7 via a wire. The control circuit board 16 is electrically connected to the built-in battery inside the sleeve 7. A control switch 18 and a display screen 17 are respectively provided on the outer surface of the sleeve 7. Both the control switch 18 and the display screen 17 are electrically connected to the control circuit board 16 and are powered by the built-in battery. Through the built-in liquid level sensor 13 and the display screen 17, traditional visual observation can be upgraded to objective electronic measurement. Data can be read directly from the display screen 17, completely eliminating reading errors caused by personal judgment, viewing angle, or lighting problems, and greatly improving the accuracy and reliability of volume determination.

[0022] In a preferred embodiment, a temperature sensor 14 is mounted on the upper surface of the inner bottom of the main body 1. The temperature sensor 14 is an ultra-thin, small-volume temperature sensor, such as the JLS-WL or MPM489WZ4 model. The temperature sensor 14 is electrically connected to the control circuit board 16. The temperature sensor 14 can accurately measure the actual temperature of the solution. Combined with the built-in correction mechanism on the control circuit board 16, the liquid volume is corrected, fundamentally solving the volumetric error caused by the difference between the solution temperature and the standard temperature, further improving the scientific validity and accuracy of the measurement results. When correcting the solution volume, the volume occupied by the sensor assembly within the volumetric flask is also corrected.

[0023] The control circuit board 16 also includes structures such as capacitors and microcontrollers. The microcontroller serves as the control core, and its method of processing temperature and liquid level sensor data adopts mature existing technology, the specific method of which will not be described in detail.

[0024] The control circuit board 16, microcontroller, built-in battery, temperature sensor 14 and liquid level sensor 13 used in this application are all commonly used electronic components in the prior art. Their specific structures, working principles, control methods and circuit connections are all well-known technologies and will not be described in detail here.

[0025] In a preferred embodiment, a sealing gasket 15 is provided on the inner bottom upper surface of the main body 1 at the position corresponding to the wire positions of the temperature sensor 14 and the liquid level sensor 13. By providing a sealing gasket at the position where the sensor wires pass through, it is possible to effectively prevent the liquid inside the bottle from leaking along the gaps, protecting the control circuit board, battery and other key electronic components below from liquid corrosion or short circuit risks, ensuring the long-term safe and stable operation of the entire measurement system, and also improving the physical sealing of the volumetric bottle body to prevent external contaminants from entering.

[0026] Optionally, the built-in battery is a removable battery, such as a commonly used button battery, and a battery cover is provided on the lower surface of the sleeve 7 for easy battery replacement.

[0027] Optionally, the built-in battery is a rechargeable lithium battery, and a charging port 19 corresponding to the lithium battery is provided on the outer surface of the sleeve 7. The charging port 19 can be a commonly used Type-C interface to facilitate charging of the built-in battery.

[0028] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A volumetric flask structure comprising a main body (1) and a neck portion (2) communicating with the main body (1), characterized in that: The main body (1) is cylindrical, the diameter of the bottleneck (2) is smaller than the diameter of the main body (1), the main body (1) and the bottleneck (2) are connected by a conical part, a bottle stopper (3) is provided at the upper opening of the bottleneck (2), and scale lines (5) are provided on the outer surfaces of the main body (1), the bottleneck (2) and the conical part.

2. The volumetric flask structure according to claim 1, characterized in that: The outer peripheral surface of the bottle stopper (3) is provided with anti-slip texture.

3. The volumetric flask structure according to claim 1, characterized in that: The inner surfaces of the main body (1), the bottleneck (2) and the tapered part are provided with an anti-stick coating (6).

4. The volumetric flask structure according to claim 1, characterized in that: A sleeve (7) is fitted on the bottom outer side of the main body (1), and a retaining ring (9) is provided on the upper outer side of the bottleneck part (2). Two slide rails (8) are symmetrically arranged between the retaining ring (9) and the sleeve (7) along the outer side of the bottleneck part (2), the conical part and the main body (1). A slider (10) is slidably arranged on the slide rail (8). An arc-shaped telescopic rod (11) is provided on the side surface of the two sliders (10), and an observation mirror (12) is provided between the two telescopic rods (11).

5. The volumetric flask structure according to claim 4, characterized in that: The telescopic rod (11) includes multiple sliding rod sections.

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