Volumetric flask plug anti-lost structure

Abstract

The utility model discloses a volumetric flask cork anti-lost structure, which relates to the technical field of volumetric flasks, and comprises a volumetric flask body and a volumetric flask cap, the outer side wall of the flask body is fixedly provided with a placing frame for accommodating the volumetric flask cap, the upper end of the placing frame is rotatably provided with a limiting ring, and the two sides of the placing frame are provided with positioning mechanisms for fixing the limiting ring. The positioning mechanism comprises a clamping column and an elastic piece, the elastic piece is a spring, a fixing mechanism used for being installed on a bottle body is arranged on one side of the containing frame, the fixing mechanism comprises a connecting block and two annular strips, and the lower end of the containing frame is in threaded connection with a liquid collecting groove used for collecting residual liquid on a bottle cap. The limiting ring is fixed above the placing frame through the positioning mechanism, the bottle cap placed in the placing frame is limited through the limiting ring, the bottle cap is prevented from being separated from the placing frame, and the problems that after a bottle plug of an existing volumetric flask is taken down and placed, rolling and losing are likely to happen, and when the bottle plug is needed, extra experiment time is increased when the bottle plug is found are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of volumetric flasks, in particular to an anti-lost structure for a bottle stopper of a volumetric flask. Background Art

[0002] Volumetric flasks, also known as measuring bottles or volumetric flasks, are precision measuring instruments commonly used in laboratories to prepare or dilute a certain volume of solution. They usually consist of a narrow neck and a wider bottom. This design helps to accurately control the amount of liquid added to ensure accuracy. The most notable feature of a volumetric flask is that the neck has a precise scale line that indicates the specific volume that the bottle can hold, such as 100 ml, 250 ml, 1000 ml, etc. In the experiment, the liquid is added to this mark to reach the predetermined volume. Since glass is widely used in chemical experiments due to its chemical stability and corrosion resistance, volumetric flasks are mostly made of glass.

[0003] Most volumetric flasks are equipped with stoppers at their mouths. The stoppers are usually made of materials that are compatible with the body of the volumetric flask, such as silica gel, polyethylene or ground glass. These materials can provide good chemical compatibility and mechanical strength. Many chemical reagents stored in volumetric flasks, especially solvents, are volatile. The stopper can effectively seal the mouth of the bottle, prevent the volatile components in the solution from dispersing, maintain the accuracy of the volume of the solution in the volumetric flask, and ensure that the concentration of the solution remains constant. In addition, pollutants such as dust and microorganisms float in ordinary laboratory environments. The stopper can prevent these pollutants from entering the volumetric flask, protect the solution from being contaminated by the external environment, and maintain its purity.

[0004] However, in order to match the bottle mouth of the volumetric flask, the bottle stopper is mostly set to a truncated cone structure. When operating the volumetric flask, the bottle stopper needs to be removed, and the removed bottle stopper is easily rolled and lost when placed on an uneven table. When the bottle stopper is needed, searching for the bottle stopper will increase the extra experimental time and affect the experimental operation efficiency. In order to solve the above-mentioned problems, a volumetric flask bottle stopper anti-loss structure is provided. Utility Model Content

[0005] The utility model aims to provide a structure for preventing the loss of the bottle stopper of a volumetric flask, so as to solve the problem in the above-mentioned background technology that the existing volumetric flask is prone to rolling and losing after the bottle stopper is removed and placed, and when the bottle stopper is needed, searching for the bottle stopper will increase the extra experimental time.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a volumetric flask stopper anti-loss structure, comprising a bottle body and a bottle cap of the volumetric flask, a placement frame for storing the bottle cap is fixedly installed on the outer wall of the bottle body, a limit ring is rotatably installed on the upper end of the placement frame, and positioning mechanisms for fixing the limit rings are arranged on both sides of the placement frame, the positioning mechanisms fix the limit rings above the placement frame, and the limit rings limit the bottle caps placed in the placement frame to prevent the bottle caps from falling off the placement frame.

[0007] As a preferred technical solution of the utility model, a fixing mechanism for mounting on the bottle body is provided on one side of the placement frame.

[0008] As a preferred technical solution of the utility model, the fixing mechanism includes a connecting block and two ring strips. The connecting block is fixedly connected to the outer wall of the placement frame. One end of the two ring strips is fixedly connected to the end face of the connecting block. The two ring strips form an annular structure, and the annular structure formed by the ring strips is sleeved on the outer wall of the bottle body. The two ring strips are connected at one end away from the connecting block by a screw.

[0009] As a preferred technical solution of the utility model, the positioning mechanism includes a clamping column and an elastic member. Slide grooves are provided on both sides of the placement frame. The clamping column is slidably installed in the slide groove. The elastic member is installed in the slide groove. The elastic member applies an elastic force to the clamping column toward the groove opening. The two clamping columns are respectively slidably inserted at both ends of the limit ring. The outer wall of the clamping column is provided with a protrusion, and the limit ring is provided with a groove matching the protrusion.

[0010] As a preferred technical solution of the utility model, the elastic member is configured as a spring.

[0011] As a preferred technical solution of the utility model, the lower end of the placement frame is threadedly connected with a liquid collecting trough for collecting residual liquid in the bottle caps.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model fixes a limiting ring above the placing frame through a positioning mechanism, and limits the bottle cap placed in the placing frame through the limiting ring to prevent the bottle cap from leaving the placing frame, thereby solving the problem that the existing volumetric flask is prone to rolling and being lost after the bottle stopper is removed and placed, and that the search for the bottle stopper when needed will increase extra experimental time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a volumetric flask according to an embodiment of the utility model;

[0015] Figure 2 This is a cross-sectional view of the bottle body of an embodiment of the utility model;

[0016] Figure 3This is a schematic diagram of the placement frame structure of an embodiment of the utility model;

[0017] Figure 4 This is a schematic cross-sectional view of the placement frame and the liquid collecting tank of an embodiment of the utility model;

[0018] Figure 5 It is a cross-sectional view of the placement frame and the liquid collecting tank according to an embodiment of the utility model.

[0019] In the figure: 1, bottle body; 2, bottle cap; 3, placement frame; 31, liquid collecting tank; 4, limiting ring; 5, fixing mechanism; 51, connecting block; 52, ring strip; 6, positioning mechanism; 61, clamping column; 62, elastic member. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 This embodiment provides a volumetric flask stopper anti-lost structure, including a volumetric flask body 1 and a bottle cap 2. The bottle body 1 and the bottle cap 2 are both made of glass, and the bottle body 1 is made of transparent glass. Figure 1 and Figure 2 As shown, the bottle 1 is composed of a slender neck and a wide bottom. The bottom has a large capacity and can store most solutions. The outer wall of the neck is provided with scales to display the amount of solution inside the bottle 1. The bottle cap 2 is inserted into the opening at the upper end of the neck of the bottle 1. The bottle 1 can be closed by the bottle cap 2 to prevent the solution inside the bottle 1 from volatilizing or being contaminated.

[0022] The bottle cap 2 is set to a truncated cone structure to fit the bottle mouth of the bottle body 1. When adding or discharging the solution, the bottle cap 2 needs to be removed to expose the bottle mouth of the bottle body 1. At this time, the removed bottle cap 2 needs to be placed. In order to prevent the placed bottle cap 2 from rolling, such as Figure 3 and Figure 4 As shown, a gripping handle is fixedly connected to the upper end of the bottle cap 2. The length of the gripping handle is greater than the diameter of the top of the bottle cap 2, and then after the bottle cap 2 is placed, the gripping handle prevents the bottle cap 2 from rolling, reducing the possibility of the bottle cap 2 being lost.

[0023] Since the solution in the bottle body 1 will evaporate, and the bottle body 1 needs to be shaken slowly when mixing and observing the solution, the evaporated solution and the solution splashed by the shaking may adhere to the outer wall of the bottle cap 2. At this time, pinching the handle with fingers can prevent the hand from contacting the bottle cap 2, thereby preventing the hand from contacting the solution and preventing the corrosive solution from damaging the hand.

[0024] However, when the bottle cap 2 is placed, there is still a risk of the bottle cap 2 being lost if it is accidentally touched, collided, or the placement position is tilted. In order to prevent the bottle cap 2 from being lost, a placement frame 3 is installed on the outer wall of the bottle body 1. The outer wall of the placement frame 3 is provided with a fixing mechanism 5, and the fixing mechanism 5 includes a connecting block 51 and a ring bar 52. The connecting block 51 is fixedly connected to the outer wall of the placement frame 3, and two ring bars 52 are provided. One end of the two ring bars 52 is fixedly connected to the end face of the connecting block 51 away from the placement frame 3. The ring bar 52 is set as a metal bar, which is elastic and can be bent. Figure 3 As shown, the two ring strips 52 form an annular structure, and the annular structure formed by the ring strips 52 is sleeved on the neck of the bottle body 1, and the ends of the two ring strips 52 away from the connecting block 51 are connected by a screw. By tightening the screw, the two ring strips 52 can be brought close to and fitted to each other, thereby fixing the two ring strips 52 on the bottle body 1, that is, fixing the placement frame 3 on the outer wall of the bottle body 1.

[0025] The upper end of the placement frame 3 is provided with a placement hole, and the bottle cap 2 pulled out from the bottle body 1 can be placed in the placement hole of the placement frame 3 for storage. When the volatilized solution and the solution splashed due to shaking adhere to the outer wall of the bottle cap 2, after the bottle cap 2 is placed in the placement hole of the placement frame 3, the solution will slide down and contaminate the bottle body 1. In order to prevent the residual solution of the bottle cap 2 from contaminating the bottle body 1, the lower end of the placement frame 3 is threadedly connected with a liquid collecting groove 31. Figure 3 and Figure 4 As shown, the residual solution on the outer wall of the bottle cap 2 will slide down and fall into the liquid collecting groove 31 for collection. The solution remaining in the liquid collecting groove 31 can be cleaned by unscrewing the liquid collecting groove 31.

[0026] However, when observing and accelerating the mixing of the solution, shaking the bottle body 1 may easily cause the bottle cap 2 to separate from the placement frame 3 and fall off. In order to limit the bottle cap 2 placed in the placement hole of the placement frame 3, the upper end of the placement frame 3 rotates the limit ring 4. Figure 3 and Figure 4 As shown, the two ends of the limiting ring 4 are rotatably connected to the two sides of the placement frame 3. After the limiting ring 4 is rotated to make the limiting ring 4 vertical, the limiting ring 4 is located above the bottle cap 2 to limit the bottle cap 2 and prevent the bottle cap 2 from escaping from the placement frame 3.

[0027] When the bottle body 1 shakes, the inertia generated by the shaking will also drive the limiting ring 4 to rotate, and thus the upper part of the bottle cap 2 cannot be limited. In order to fix the limiting ring 4, the placement frame 3 is provided with a positioning mechanism 6. Among them, there are two positioning mechanisms 6, and the two positioning mechanisms 6 are located on both sides of the placement frame 3. The positioning mechanism 6 includes a clamping column 61 and an elastic member 62. Both ends of the limiting ring 4 are provided with sliding holes, and both sides of the placement frame 3 are provided with sliding grooves. The sliding grooves of the placement frame 3 are aligned with and connected to the sliding holes of the limiting ring 4. The clamping column 61 is slidably inserted into the sliding groove of the placement frame 3, and the elastic member 62 is installed in the sliding groove of the placement frame 3. The elastic member 62 is set as a spring, and the elastic force toward the slot of the sliding groove is applied to the clamping column 61 by the elastic member 62, so that the clamping column 61 extends from the sliding groove and is inserted into the sliding hole of the limiting ring 4. The outer wall of the clamping column 61 is provided with a protrusion, and the side wall of the sliding hole of the limiting ring 4 is provided with a groove matching the protrusion, and two grooves are provided, one groove is parallel to the bottle cap 2, and the other groove is perpendicular to the bottle cap 2. Press the clamping column 61 to shrink the clamping column 61 into the slide groove of the placement frame 3. When the limiting ring 4 is in a vertical state, release the clamping column 61, and the clamping column 61 moves under the elastic force of the elastic member 62, so that the protrusion of the clamping column 61 is engaged in the groove parallel to the bottle cap 2. Similarly, after the limiting ring 4 rotates 90 degrees, the protrusion of the clamping column 61 can be engaged in the groove parallel to the bottle cap 2. After the protrusion of the clamping column 61 is engaged in the groove of the limiting ring 4, the limiting ring 4 can be fixed to prevent the limiting ring 4 from rotating.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A volumetric flask stopper anti-lost structure, comprising a volumetric flask body (1) and a bottle cap (2), characterized in that: A placement frame (3) for storing bottle caps (2) is fixedly mounted on the outer wall of the bottle body (1); a limit ring (4) is rotatably mounted on the upper end of the placement frame (3); positioning mechanisms (6) for fixing the limit ring (4) are arranged on both sides of the placement frame (3); the positioning mechanisms (6) fix the limit ring (4) above the placement frame (3); the limit ring (4) limits the bottle cap (2) placed in the placement frame (3) to prevent the bottle cap (2) from escaping from the placement frame (3); The positioning mechanism (6) comprises a clamping column (61) and an elastic member (62). Slide grooves are provided on both sides of the placement frame (3). The clamping column (61) is slidably installed in the slide groove. The elastic member (62) is installed in the slide groove. The elastic member (62) applies an elastic force to the clamping column (61) in the direction of the slide groove notch. The two clamping columns (61) are respectively slidably inserted at the two ends of the limiting ring (4). The outer wall of the clamping column (61) is provided with a protrusion, and the limiting ring (4) is provided with a groove matching the protrusion.

2. The anti-lost structure of the stopper of a volumetric flask according to claim 1, characterized in that: A fixing mechanism (5) for mounting on the bottle body (1) is provided on one side of the placement frame (3).

3. The anti-lost structure of the stopper of a volumetric flask according to claim 2, characterized in that: The fixing mechanism (5) comprises a connecting block (51) and two ring strips (52); the connecting block (51) is fixedly connected to the outer side wall of the placement frame (3); one end of each of the two ring strips (52) is fixedly connected to the end surface of the connecting block (51); the two ring strips (52) form an annular structure; and the annular structure formed by the ring strips (52) is sleeved on the outer side wall of the bottle body (1); and the ends of the two ring strips (52) away from the connecting block (51) are connected via a screw.

4. The anti-lost structure of the stopper of a volumetric flask according to claim 1, characterized in that: The elastic member (62) is configured as a spring.

5. The anti-lost structure of the stopper of a volumetric flask according to claim 3, characterized in that: The lower end of the placement frame (3) is threadedly connected to a liquid collecting trough (31) for collecting residual liquid in the bottle cap (2).

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