Simple volumetric flask circulation frame
The fixed plate and elastic ring structure of the simple volumetric flask transfer rack solves the problem of easy breakage and tipping of small-volume bottles during transportation, achieves stable fixation and efficient transportation, and meets the needs of laboratory testing.
Patent Information
- Application Number
- CN202422872338.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-22
AI Technical Summary
In laboratory testing, small-volume bottles below 100 mL are easily damaged during transportation due to manual handling or easily tipped over when transported using ordinary sample baskets, affecting the testing process.
A simple volumetric flask transfer rack was designed, which adopted a fixed plate, holes, handles and elastic ring structure. The volumetric flasks were fixed by forming a stable triangular structure, and the elastic deformation of the elastic ring was used to achieve simultaneous fixation and transfer of multiple volumetric flasks.
The invention realizes the stable fixation and transportation of multiple volumetric flasks, prevents breakage and dumping, improves the detection efficiency, is low in cost and easy to manufacture.
Smart Images
Figure CN223408514U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of volumetric flask circulation, in particular to a simple volumetric flask circulation rack. Background Art
[0002] A precise instrument designed specifically for preparing solutions of a precise molar concentration. It features a slender-necked, pear-shaped, flat-bottomed glass bottle with a ground glass stopper. Clear graduations are engraved on the neck of the bottle, indicating that at the specified temperature, when the concave meniscus of the liquid is tangent to the markings on the neck of the bottle, the volume of the solution is exactly equal to the volume marked on the bottle. Volumetric flasks are available in a variety of sizes, ranging from 5mL, 10mL, 25mL, 50mL, and 100mL, to even larger sizes like 250mL, 500mL, 1000mL, and 2000mL. They are widely used in chemical and biological laboratories for quantitative sample storage and dissolution.
[0003] The steps for preparing a solution using a volumetric flask are as follows: First, place the accurately weighed solute (solid or liquid) in a beaker and dissolve it with a small amount of solvent; then, transfer the solution to the volumetric flask along a glass rod; to ensure complete transfer of the solute, wash the beaker several times and transfer all the washing liquid to the volumetric flask; when the liquid level in the volumetric flask is about 1 to 2 cm close to the scale line, use a dropper to carefully add dropwise until the concave liquid surface of the liquid completely coincides with the scale line; finally, cover the bottle tightly with the stopper and mix the liquid in the bottle evenly by inverting and shaking.
[0004] However, in actual applications, large-volume flasks above 100mL are used relatively infrequently due to their heavy weight and volume; while small-volume flasks below 100mL are often used in large numbers to prepare solutions simultaneously due to the large number of laboratory test samples, in order to save testing time. This requires testers to transport a large number of volumetric flasks at the same time. As a glass instrument, if testers choose to manually pick up multiple volumetric flasks at one time, they may slip during the transportation process due to taking too many volumetric flasks, resulting in damage to the volumetric flasks, which seriously delays the testing process; if testers choose to use ordinary sample baskets to transport multiple volumetric flasks at the same time, since the volumetric flasks are higher, they are easy to tip over during transportation, and there is a possibility of sample spillage, thus affecting the inspection process. Utility Model Content
[0005] The utility model discloses a simple volumetric flask transfer rack, which solves the problem that in laboratory testing, due to the need to use a large number of small volumetric flasks below 100mL to prepare solutions, the testers are faced with the problem that the flasks are easily damaged when they are manually picked up or easily tipped over when transported using sample baskets, thus affecting the testing process.
[0006] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions:
[0007] A simple volumetric flask flow rack includes two horizontally arranged fixed plates, the opposite sides of the two fixed plates are hinged, and handles are respectively fixed to the opposite sides of the two fixed plates. Each fixed plate is provided with two groups of holes, and one group of holes is provided near the hinge of the fixed plate, and the other group of holes is provided near the handle. Each group of holes is provided with a plurality of holes, and each group of holes is evenly spaced between the two ends of the fixed plate. The holes on the same fixed plate are respectively provided corresponding to the holes on the other fixed plate; each of the holes is provided with an elastic ring fixed to the corresponding fixed plate.
[0008] Compared with the prior art, the present invention has the following beneficial effects:
[0009] Hold the volumetric flask and pass the bottleneck of the volumetric flask through the corresponding hole of one of the fixed plates, pull the handle of the other fixed plate, and make the other fixed plate rotate around the hinge, which will make the sides of the two fixed plates with handles approach each other. In the process of pulling the handle, the bottleneck of the volumetric flask will pass through the corresponding hole of the pulled fixed plate. As the two fixed plates continue to approach, the upper and lower parts of the bottleneck of the volumetric flask will respectively pass through the corresponding holes and engage with the two fixed plates. At this time, a stable triangular structure will be formed between the two fixed plates and the bottleneck of the volumetric flask, thus realizing the fixing operation of the volumetric flask. Then, you only need to hold the two handles tightly to maintain the triangular structure to realize the circulation operation of the volumetric flask. When multiple bottles need to be bottled When the volumetric flask is transported simultaneously, after completing the above steps, the pressure between the two handles is canceled. At this time, due to the setting of the elastic ring, the volumetric flask that has been fixed will not fall off easily. The bottleneck of the next volumetric flask is inserted into the corresponding hole on the two fixing plates in sequence, and the two handles are gripped again, so that the two fixing plates can fix the new volumetric flask. The above steps are repeated, and the simultaneous fixing and transporting operation of multiple volumetric flasks can be achieved. When the volumetric flask needs to be removed, because the elastic ring adopts a high-rebound rubber material, the pressure between the two handles is canceled. The volumetric flask to be removed is gripped and slightly shaken left and right, and the elastic deformation of the elastic ring can be used to remove the volumetric flask, effectively preventing the volumetric flask from being stuck in the hole of the fixing plate. The utility model can achieve the operation of fixing and transporting multiple volumetric flasks at the same time by setting the fixing plate, the hole, the handle and the elastic ring. In addition, the utility model is simple and easy to manufacture, has low cost, and is highly practical, meeting the actual use needs of enterprises. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a top view schematic diagram of the utility model;
[0011] Figure 2 This is a front cross-sectional schematic diagram of the utility model;
[0012] Figure 3 This is a front cross-sectional schematic diagram of the utility model when two fixing plates are simultaneously engaged with the volumetric flask;
[0013] In the figure: 1. fixing plate; 2. hole; 3. mounting slot; 31. hinge; 32. screw; 4. elastic ring; 5. rubber layer; 6. handle; 7. volumetric flask. DETAILED DESCRIPTION
[0014] The specific contents of the utility model are described in detail below with reference to the accompanying drawings and embodiments.
[0015] like Figure 1 and Figure 2 As shown, the present invention provides a simple volumetric flask circulation rack, comprising two horizontally arranged fixed plates 1, with opposite sides of the two fixed plates 1 being hinged; specifically, a plurality of mounting grooves 3 are provided on the top surfaces of the opposite sides of the two fixed plates 1, and hinges 31 are detachably connected to the plurality of mounting grooves 3, and the plurality of hinges 31 are detachably connected to the two fixed plates 1 via screws 32. Furthermore, the hinges 31 are 180-degree hinges, and the hinges 31 and screws 32 are preferably made of acid- and alkali-resistant 316L stainless steel; by providing the hinges 31, any one of the fixed plates 1 can be rotated 180 degrees relative to the other fixed plate 1, thereby forming a stable triangle between the two fixed plates 1 and the bottleneck of the volumetric flask 7, thereby achieving the fixing and circulation operation of the volumetric flask 7.
[0016] like Figure 1 、 Figure 2 and Figure 3 As shown, handles 6 are fixed to opposite sides of the two fixing plates 1. Furthermore, the two handles 6 are tilted upward on the sides not connected to the corresponding fixing plates 1. The provision of handles 6 facilitates the operator's handling operation after rotating the fixing plates 1 and fixing the volumetric flasks 7, thereby enabling the simultaneous transfer of multiple volumetric flasks 7. The upward tilt of the two handles 6 on the sides not connected to the corresponding fixing plates 1 ensures that when the two fixing plates 1 are clipped and fixed to the volumetric flasks 7, the two handles 6 are exactly parallel. This makes it easier for the operator to hold the fixing plates 1, effectively improving the operator's comfort.
[0017] like Figure 1 、 Figure 2 and Figure 3As shown, each fixing plate 1 is provided with two groups of holes 2, and one group of holes 2 is provided near the hinge of the fixing plate 1, and the other group of holes 2 is provided near the handle 6. Each group of holes 2 is provided in a plurality of numbers, and each group of holes 2 is evenly spaced between the two ends of the fixing plate 1. The holes 2 on the same fixing plate 1 are respectively provided corresponding to the holes 2 on the other fixing plate 1; the apertures of the plurality of holes 2 provided near the handle 6 are larger than the apertures of the plurality of holes 2 provided near the hinge of the fixing plate 1, so that the plurality of holes 2 provided near the handle 6 can be clamped with the 50mL and 100mL volumetric flasks 7, and the plurality of holes 2 provided near the hinge of the fixing plate 1 can be clamped with the 50mL and 100mL volumetric flasks 7. It is snap-fitted to volumetric flasks 7 below 50mL; specifically, the diameters of the several holes 2 arranged near the handle 6 are all set to 12.5mm~13mm, and the diameters of the several holes 2 near the hinge of the fixed plate 1 are all set to 9mm~10mm; according to the bottleneck diameters of commercially available volumetric flasks, with the volumetric flasks produced by Tianbo Company as the main reference, the bottleneck diameter of the 50mL volumetric flask is 10mm, the bottleneck diameter of the 100mL volumetric flask is 12mm, and the diameter of the volumetric flasks below 50mL is 8mm, so that holes 2 of different aperture sizes are set to meet the needs of transporting volumetric flasks 7 of different specifications, effectively expanding the scope of application of the entire device.
[0018] like Figure 1 and Figure 2 As shown, each hole 2 is provided with an elastic ring 4 fixed to the corresponding fixed plate 1; further, the elastic ring 4 is made of a high-rebound, acid- and alkali-resistant rubber material; specifically, the elastic ring 4 can be made of natural rubber, chloroprene rubber and other materials; further, according to the rebound rate of natural rubber and chloroprene rubber, the thickness of the elastic ring 4 is set to at least 4.5 mm. The elastic ring 4 can not only increase the friction between the fixed plate 1 and the volumetric flask 7 so as to fix the volumetric flask 7 more firmly, but also protect the outer wall of the bottleneck of the volumetric flask 7, so that it is not easily scratched by the fixed plate 1 and caused to break. At the same time, by using a high-rebound rubber material, the elastic deformation of the elastic ring 4 can be used to remove the volumetric flask 7 from the hole 2 of the fixed plate 1 without causing it to be completely stuck.
[0019] like Figure 2 As shown, rubber layers 5 are fixed to the top and bottom surfaces of the two fixing plates 1, and the rubber layers 5 are made of acid- and alkali-resistant rubber material. The acid- and alkali-resistant rubber material can protect the fixing plates 1 and increase the durability of the fixing plates 1.
[0020] like Figure 1 and Figure 2As shown, the centers of two corresponding holes 2 on different fixing plates 1 are staggered, and the staggered distance is set to 1 to 2 mm. The staggered arrangement of the centers of two corresponding holes 2 on different fixing plates 1 enables the two fixing plates 1 to more firmly fix the volumetric flask 7. Specifically, in actual use, it is preferred to set the staggered distance of the holes 2 located near the hinge of the fixing plate 1 to 1 mm, and the staggered distance of the holes 2 located near the handle 6 to 2 mm. This can meet the demand for simultaneous transfer operations of volumetric flasks 7 of different specifications.
[0021] like Figure 1 As shown, the center of any one of the holes 2 near the hinge of the fixing plate 1 is aligned with the midpoint of the line connecting the centers of the two corresponding holes 2 provided near the handle 6. The arrangement of aligning the center of any one of the holes 2 near the hinge of the fixing plate 1 with the midpoint of the line connecting the centers of the two corresponding holes 2 provided near the handle 6 allows the pear-shaped bottoms of the multiple volumetric flasks 7 to be staggered when the fixing plate 1 is used to fix multiple volumetric flasks 7, thereby preventing the bottoms of the multiple volumetric flasks 7 from colliding and breaking.
[0022] Furthermore, the thickness of the two fixing plates 1 is set to 1 to 1.5 cm, and the thickness of the two fixing plates 1 is the same. If the fixing plates 1 are set too thin, the distance between the two fixing plates 1 on the side with the handle 6 will be too large when the two fixing plates 1 are used to fix the volumetric flask 7, which is not conducive to the staff's grasping operation; if the fixing plates 1 are set too thick, it may result in the inability to effectively fix the volumetric flask 7. In addition, the fixing plates 1 can be made of durable materials such as plastic plates and acrylic plates, which not only have a certain degree of hardness, but also increase the durability of the fixing plates 1.
[0023] When in use, hold the volumetric flask 7, pass the bottleneck of the volumetric flask 7 through the corresponding hole 2 of one of the fixing plates 1 according to the specifications of the volumetric flask 7, pull the handle 6 of the other fixing plate 1, and make the other fixing plate 1 rotate around the hinge, which will make the two sides of the fixing plates 1 with the handle 6 approach each other. In the process of pulling the handle 6, the bottleneck of the volumetric flask 7 will pass through the corresponding hole 2 of the pulled fixing plate 1. As the two fixing plates 1 continue to approach, the upper and lower parts of the bottleneck of the volumetric flask 7 will respectively pass through the corresponding holes 2 and the two fixing plates 1. At this time, a stable triangular structure will be formed between the two fixing plates 1 and the bottleneck of the volumetric flask 7, thus realizing the fixing operation of the volumetric flask 7, and then you only need to hold the two handles 6 tightly to maintain the triangular structure to realize the circulation operation of the volumetric flask 7. When it is necessary to transport multiple volumetric flasks 7 of different specifications at the same time, after completing the above steps, the pressure between the two handles 6 is cancelled. At this time, due to the setting of the elastic ring 4, the fixed volumetric flask 7 will not fall off easily. The bottleneck of the next volumetric flask 7 is inserted into the corresponding hole 2 on the two fixing plates 1 in turn, and the two handles 6 are gripped again so that the two fixing plates 1 can fix the new volumetric flask 7. The above steps are repeated to achieve the simultaneous fixation and transport operation of multiple volumetric flasks 7; when it is necessary to remove the volumetric flask 7, since the elastic ring 4 is made of high-resilient rubber material, the pressure between the two handles 6 is cancelled. By holding the volumetric flask 7 to be removed and shaking it slightly left and right, the elastic deformation of the elastic ring 4 can be used to remove the volumetric flask 7, effectively preventing the volumetric flask 7 from being stuck in the hole 2 of the fixing plate 1.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A simple volumetric flask flow rack, characterized by: The invention comprises two horizontally arranged fixing plates (1), wherein opposite sides of the two fixing plates (1) are hinged, and handles (6) are fixed to opposite sides of the two fixing plates (1). Two groups of holes (2) are provided on each fixing plate (1), and one group of holes (2) is provided near the hinge of the fixing plate (1), and the other group of holes (2) is provided near the handle (6). Each group of holes (2) is provided with a plurality of holes, and each group of holes (2) is evenly spaced between the two ends of the fixing plate (1). The holes (2) on the same fixing plate (1) are respectively provided corresponding to the holes (2) on the other fixing plate (1); and an elastic ring (4) fixed to the corresponding fixing plate (1) is provided in each hole (2).
2. The simple volumetric flask flow rack according to claim 1, characterized in that: The diameters of the plurality of holes (2) arranged near the handle (6) are larger than the diameters of the plurality of holes (2) arranged near the hinge of the fixed plate (1), so that the plurality of holes (2) arranged near the handle (6) can be clamped with 50 mL and 100 mL volumetric flasks (7), while the plurality of holes (2) arranged near the hinge of the fixed plate (1) can be clamped with volumetric flasks (7) with a volume of less than 50 mL.
3. The simple volumetric flask flow rack according to claim 1, characterized in that: A plurality of mounting grooves (3) are provided on the top surfaces of the opposite sides of the two fixing plates (1), and hinges (31) are detachably connected in the plurality of mounting grooves (3). The plurality of hinges (31) are detachably connected to the two fixing plates (1) via screws (32).
4. The simple volumetric flask flow rack according to claim 1, characterized in that: The top and bottom surfaces of the two fixed plates (1) are both fixed with rubber layers (5), and the rubber layers (5) are made of acid- and alkali-resistant rubber materials; the elastic ring (4) is made of high-rebound, acid- and alkali-resistant rubber materials.
5. The simple volumetric flask flow rack according to claim 1, characterized in that: The sides of the two handles (6) that are not connected to the corresponding fixing plates (1) are both arranged to be tilted upwards.
6. The simple volumetric flask flow rack according to claim 2, characterized in that: The diameters of the plurality of holes (2) arranged near the handle (6) are all set to 12.5 mm to 13 mm, and the diameters of the plurality of holes (2) arranged near the hinge of the fixing plate (1) are all set to 9 mm to 10 mm.
7. The simple volumetric flask flow rack according to claim 1, characterized in that: The centers of the two corresponding holes (2) on different fixing plates (1) are staggered, and the staggered distance is set to 1 to 2 mm.
8. The simple volumetric flask flow rack according to claim 1, characterized in that: The center of any one of the holes (2) near the hinge of the fixing plate (1) is aligned with the midpoint of the line connecting the centers of the two corresponding holes (2) near the handle (6).
9. The simple volumetric flask flow rack according to claim 1, characterized in that: The thickness of the elastic ring (4) is set to at least 4.5 mm.
10. The simple volumetric flask flow rack according to claim 1, characterized in that: The thickness of the two fixing plates (1) is set to 1-1.5 cm, and the thickness of the two fixing plates (1) is the same.