An auxiliary device for a bottle-top pipette

Abstract

This utility model belongs to the technical field of chemical analysis and detection devices, specifically relating to an auxiliary device for a bottle-mouth pipette. It includes, from bottom to top, an annular plug, an angle adjustment assembly, and a second annular plug connected to the adapter port of the bottle-mouth pipette. The angle adjustment assembly includes a support ring plate, an elastic rubber ring, and an angle adjustment ring plate. The support ring plate and the angle adjustment ring plate are connected by a coaxially arranged elastic rubber ring. The annular plug is connected to the bottom of the support ring plate, and the second annular plug is connected to the upper surface of the angle adjustment ring plate. The edges of the support ring plate and the angle adjustment ring plate are bonded together with matching Velcro. This utility model has a simple structure, low cost, and is easy and controllable to operate. It can stably and conveniently connect a bottle-mouth pipette to a reagent bottle, especially a conical flask, and facilitates adjustment of the insertion angle of the pipette tip in the reagent bottle, preventing air bubbles from forming during aspiration due to excessively low liquid levels in the reagent bottle.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical analysis and detection devices, specifically relating to an auxiliary device for a bottle-mouth pipette. Background Technology

[0002] A bottle-top pipette, also known as a bottle-top dispenser or bottle-top liquid dispenser, is a laboratory device that allows a quantitative amount of liquid to be transferred directly from a reagent bottle by attaching it to the bottle mouth. Since the accuracy of a bottle-top pipette is no less than that of visually measuring liquid using a graduated cylinder, there is no need to pour the liquid back into a graduated cylinder for measurement after quantitative transfer using a bottle-top pipette. Bottle-top pipettes are high-precision pipetting devices, second only to Class A single-gradient pipettes in accuracy. Compared to Class A single-gradient pipettes, bottle-top pipettes offer simpler and faster operation, especially in frequent and high-volume pipetting operations. The advantages of bottle-top pipettes are significant, effectively reducing irritation to the operator's mucous membranes and respiratory system caused by volatile reagents. This makes pipetting safer, more reliable, and more efficient. In current technology, when using bottle-top pipettes for frequent and high-volume pipetting operations, it is often necessary to pipe from larger-capacity (larger-diameter) reagent bottles. When using a bottle-top pipette, it is placed on the bottle neck, requiring one hand to hold the lower part of the pipette while the other... When performing frequent and large-volume pipetting operations with only one hand, especially when the reagent bottle, particularly an Erlenmeyer flask, has little reagent remaining and the liquid level is close to the bottom, the pipette tip may not penetrate deeply enough. This often draws air into the pipette, creating numerous air bubbles that affect pipetting accuracy. In such cases, it is necessary to hold both the pipette tip and the bottle opening with one hand, tilting the bottle to concentrate the liquid to one side and increase the liquid depth. Simultaneously, the angle of the pipette tip should be adjusted so that the tip can be inserted below the liquid surface and remains perpendicular to it. Performing these operations with only one hand is difficult, as the bottle is easily dropped due to an unstable grip. Furthermore, holding the bottle opening with one hand can easily contaminate the liquid or cause corrosion from splashed liquid. This poses a safety hazard, especially with corrosive strong acid solutions. Summary of the Invention

[0003] To address the above problems, the purpose of this utility model is to provide an auxiliary device for a bottle-mouth pipette that can stably and conveniently connect the adapter port at the lower end of the bottle mouth pipette to the mouth of a reagent bottle, especially a conical flask, while also facilitating the adjustment of the insertion angle of the pipette tip in the reagent bottle.

[0004] The purpose of this utility model is achieved through the following technical solution: an auxiliary device for a bottle-mouth pipette, comprising, from bottom to top, an annular plug, an angle adjustment assembly, and an annular plug two connected to the bottle-mouth pipette adapter port. The angle adjustment assembly includes a support ring plate, an elastic rubber ring, and an angle adjustment ring plate. The support ring plate and the angle adjustment ring plate are connected by a coaxially arranged elastic rubber ring. The annular plug is connected to the bottom of the support ring plate, and the annular plug two is connected to the upper surface of the angle adjustment ring plate. The edges of the support ring plate and the angle adjustment ring plate are bonded together by matching Velcro.

[0005] Furthermore, the outer diameter of the support ring plate is at least 2 cm longer than the outer diameter of the angle adjustment ring plate. The support ring plate is provided with a pull strap, and the angle adjustment ring plate is provided with a through hole that allows the pull strap to pass through. The support ring plate and the pull strap are provided with matching Velcro fasteners.

[0006] Furthermore, the Velcro on the support ring plate is a strip-shaped male adhesive strip, which is arranged radially along the support ring plate. The length of the male Velcro strip is not less than the height of the elastic rubber ring when it is not compressed. The angle of the ring plate relative to the support ring plate can be easily adjusted by adjusting the bonding position of the female adhesive strip on the male adhesive strip.

[0007] Furthermore, the support ring plate and the angle adjustment ring plate are provided with two pairs of Velcro straps, which are symmetrically arranged about the center of the support ring plate.

[0008] Furthermore, both the support ring plate and the angle adjustment ring plate include a reinforcing plate and a soft rubber layer integrally connected with the elastic rubber ring.

[0009] Furthermore, the ring stopper is matched with a 10mm diameter reagent bottle, and the ring stopper is integrally connected with the support ring plate. The ring stopper is detachably fitted with auxiliary ring stoppers that match 15mm, 20mm, and 25mm diameters. In use, different specifications of auxiliary ring stoppers can be selected as needed to adapt to various sizes of reagent bottles or conical flasks commonly used in experiments.

[0010] Furthermore, the annular plug is bonded to the support ring plate, which allows for easy selection of a matching annular plug according to the diameter of the reagent bottle opening. The annular plug is then bonded to the support ring plate. One angle adjustment component is equipped with annular plugs of different diameters to adapt to reagent bottles of different diameters, providing wide adaptability and saving costs.

[0011] Furthermore, the annular plug and the support ring plate are connected by Velcro, which facilitates the bonding and disassembly of the annular plug and the support ring plate.

[0012] When using this invention, first connect the ring stopper and the second ring stopper to the reagent bottle and the bottle mouth pipette respectively. Hold the bottle mouth pipette to perform the pipetting operation. When the liquid level drops, causing air bubbles to be generated during the suction pipetting operation, you can press down on the edge of the angle adjustment ring plate to deform the elastic rubber ring on the compressed side, thereby tilting the angle adjustment ring plate relative to the support ring plate. Since the bottle mouth pipette is connected to the second ring stopper, the tilting of the angle adjustment ring plate will cause the bottle mouth pipette to tilt accordingly. At the same time, hold the bottle mouth pipette and pull the reagent bottle to tilt the reagent bottle until the liquid level is perpendicular to the tip of the bottle mouth pipette. Because the reagent bottle is tilted, the reagent will gather to one side of the reagent bottle, increasing the liquid depth, thereby avoiding insufficient insertion depth of the tip into the liquid surface and the intake of air bubbles.

[0013] Beneficial effects: This utility model has a simple structure, low cost, wide applicability, and simple and controllable operation. It can stably and conveniently connect the bottle mouth pipette to the reagent bottle, especially the mouth of the conical flask. It also makes it easy to adjust the insertion angle of the pipette tip in the reagent bottle. This can avoid the generation of air bubbles during the aspiration process due to insufficient insertion depth of the pipette tip in the liquid when the diameter of the reagent bottle is large and the remaining liquid level in the reagent bottle is too low during frequent and large-volume pipetting operations. Attached Figure Description

[0014] The present invention will now be described in more detail by way of example, with reference to the accompanying drawings, in which:

[0015] Figure 1 : A schematic diagram of the structure of Embodiment 1 of this utility model.

[0016] Figure 2 : A schematic diagram of the structure of the elastic rubber ring in Embodiment 1 of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the angle adjustment ring plate and the support ring plate when the reagent bottle is tilted in Embodiment 1 of this utility model.

[0018] Figure 4 : A schematic diagram of the installation structure of the Velcro in Embodiment 2 of this utility model.

[0019] Figure 5 : A schematic diagram of the structure of the auxiliary ring plug in use when it is sleeved with the ring plug in Embodiment 3 of this utility model.

[0020] In the diagram: 01. Pipette adapter port, 02. Reagent bottle, 03. Pipette, 04. Reinforcing plate, 05. Soft rubber layer, 06. Auxiliary ring plug, 1. Ring plug, 2. Angle adjustment assembly, 3. Ring plug II, 21. Support ring plate, 22. Elastic rubber ring, 23. Angle adjustment ring plate, 24. Velcro, 241. Pull strap, 242. Through hole, 031. Pipe tip. Detailed Implementation

[0021] In this utility model, for ease of description, the relative positional relationships of each component are described according to the layout of the accompanying drawings. For example, the positional relationships of top, bottom, left, right, etc., are determined according to the layout direction in the accompanying drawings.

[0022] Example 1, referring to Figure 1 , Figure 2 , Figure 3 An auxiliary device for a bottle-top pipette includes, from bottom to top, an annular plug 1, an angle adjustment assembly 2, and an annular plug 3 connected to the bottle-top pipette adapter port 01. The angle adjustment assembly 2 includes a support ring plate 21, an elastic rubber ring 22, and an angle adjustment ring plate 23. The support ring plate 21 and the angle adjustment ring plate 23 are connected by the coaxially arranged elastic rubber ring 22. The annular plug 1 is connected to the bottom of the support ring plate 21, and the annular plug 3 is connected to the upper surface of the angle adjustment ring plate 23. The edges of the support ring plate 21 and the angle adjustment ring plate 23 are bonded together by matching Velcro 24.

[0023] The support ring plate 21 and the angle adjustment ring plate 23 are provided with two pairs of Velcro straps 24. The two pairs of Velcro straps 24 are symmetrically arranged about the center of the support ring plate 21. The annular plug 1 is connected to the support ring plate 21 by the Velcro straps 24. It is convenient to select the matching annular plug 1 according to the diameter of the mouth of the reagent bottle 02 and to attach the annular plug 1 to the support ring plate 21. One angle adjustment component 2 is equipped with annular plugs 1 of different diameters to adapt to reagent bottles 02 of different diameters, which is widely adaptable and saves costs.

[0024] When using this invention, first connect the ring stopper 1 and the second ring stopper 3 to the reagent bottle 02 and the bottle mouth pipette 03 respectively. Hold the bottle mouth pipette 03 to perform the pipetting operation. When the liquid level drops, causing air bubbles to be generated during the suction pipetting operation, you can press down on the edge of the angle adjustment ring plate 23 to deform the compressed side of the elastic rubber ring 22, thereby tilting the angle adjustment ring plate 23 relative to the support ring plate 21. Since the bottle mouth pipette 03 is connected to the second ring stopper 3, the tilting of the angle adjustment ring plate 23 will cause the bottle mouth pipette 03 to tilt accordingly. At the same time, hold the bottle mouth pipette 03 and pull the reagent bottle 02 to tilt the reagent bottle 02 until the liquid level is perpendicular to the pipette tip 031 of the bottle mouth pipette 03. Because the reagent bottle 02 is tilted, the reagent will gather to one side of the reagent bottle, increasing the liquid depth, thereby avoiding insufficient insertion depth of the pipette tip 031 into the liquid surface and the intake of air bubbles.

[0025] Example 2, refer to Figure 4As a further optimized design of Embodiment 1, the outer diameter of the support ring plate 21 is at least 2 cm longer than the outer diameter of the angle adjustment ring plate 23. The support ring plate 21 is provided with a pull strap 241, and the angle adjustment ring plate 23 is provided with a through hole 242 for the pull strap 241 to pass through. The support ring plate 21 and the pull strap 241 are respectively provided with matching Velcro 24. The Velcro 24 on the support ring plate 21 is a strip-shaped male sticker, which is arranged radially along the support ring plate 21. The length of the male sticker of the Velcro 24 is not less than the height of the elastic rubber ring 22 when it is not compressed. The tilt angle of the angle adjustment ring plate 23 relative to the support ring plate 21 can be easily adjusted by adjusting the bonding position of the female sticker on the male sticker. Both the support ring plate 21 and the angle adjustment ring plate 23 include a reinforcing plate 04 and a soft rubber layer 05 integrally connected with the elastic rubber ring 22.

[0026] Example 3, referring to Figure 5 As a further optimized design of Example 1, the ring stopper 1 is matched with a 10mm diameter reagent bottle 02, and the ring stopper 1 is integrally connected with the support ring plate 21. The ring stopper 1 is detachably fitted with auxiliary ring stoppers 06 that are matched with 15mm, 20mm and 25mm diameters. In use, different specifications of auxiliary ring stoppers 06 can be selected as needed to adapt to the various sizes of reagent bottles 02 commonly used in experiments.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for a bottle-top pipette, characterized in that, The device includes, from bottom to top, a ring plug, an angle adjustment assembly, and a second ring plug connected to the pipette adapter port at the bottle neck. The angle adjustment assembly includes a support ring plate, an elastic rubber ring, and an angle adjustment ring plate. The support ring plate and the angle adjustment ring plate are connected by a coaxially arranged elastic rubber ring. The ring plug is connected to the bottom of the support ring plate, and the second ring plug is connected to the upper surface of the angle adjustment ring plate. The edges of the support ring plate and the angle adjustment ring plate are bonded together by matching Velcro.

2. The auxiliary device for a bottle-neck pipette as described in claim 1, characterized in that, The outer diameter of the support ring plate is at least 2 cm longer than the outer diameter of the angle adjustment ring plate. The support ring plate is provided with a pull strap, and the angle adjustment ring plate is provided with a through hole that allows the pull strap to pass through. The support ring plate and the pull strap are provided with matching Velcro fasteners.

3. An auxiliary device for a bottle-neck pipette as described in claim 2, characterized in that, The Velcro on the support ring plate is a strip-shaped male adhesive, and the strip-shaped male adhesive is arranged radially along the support ring plate.

4. An auxiliary device for a bottle-neck pipette as described in claim 1, characterized in that, The support ring plate and the angle adjustment ring plate are provided with two pairs of Velcro straps, which are symmetrically arranged about the center of the support ring plate.

5. An auxiliary device for a bottle-neck pipette as described in any one of claims 1-4, characterized in that... Both the support ring plate and the angle adjustment ring plate include a reinforcing plate and a soft rubber layer integrally connected with the elastic rubber ring.

6. An auxiliary device for a bottle-neck pipette as described in claim 1, characterized in that, The annular stopper is fitted with a 10mm diameter reagent bottle, and the annular stopper is integrally connected with the support ring plate. Auxiliary annular stoppers with 15mm, 20mm, and 25mm diameters can be detachably fitted onto the annular stopper.

7. An auxiliary device for a bottle-neck pipette as described in claim 1, characterized in that, The annular plug is bonded to the support ring plate.

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