Liquid mixing dropper with double suction heads

Abstract

The utility model discloses a double-suction-head liquid mixing dropper which comprises a main body pipe body, and a suction ball is arranged on one side of the middle of the main body pipe body. A first suction head and a second suction head are symmetrically arranged at the two ends of the main pipe body; a sliding valve and a first one-way valve are sequentially arranged at the end, connected with the main pipe body, of the first suction head. A second one-way valve is arranged at the end, connected with the main pipe body, of the second suction head. Through the design of the double suction heads, the step of replacing the suction heads is omitted, and cross contamination is avoided; opening and closing of the suction hole of the first suction head are controlled through the arrangement of the sliding valve, manual hole blocking operation is replaced, and therefore the risk of liquid leakage is avoided. And the liquid absorption mode can be switched by overturning, so that the operation process is simplified.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment, and in particular to a double-pipe mixing dropper. Background Technology

[0002] Traditional droppers typically employ a single-tip design, requiring frequent tip changes or the use of additional containers for liquid mixing, resulting in cumbersome procedures and a high risk of cross-contamination. While dual-lumen droppers exist, their complex structure and inconvenient operation hinder rapid mixing and precise transfer. Therefore, there is an urgent need for a simple, efficient dual-tip mixing dropper. Utility Model Content

[0003] The purpose of this invention is to provide a dual-nozzle mixing dropper that enables rapid absorption, mixing, and transfer of two liquids through a dual-nozzle design and a flipping operation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dual-pipette mixing dropper, comprising:

[0005] The main tube has a suction ball on one side of its middle section; a first suction head and a second suction head are symmetrically arranged at both ends of the main tube; a sliding valve and a first one-way valve are sequentially arranged on the first suction head connected to one end of the main tube; and a second one-way valve is arranged on the second suction head connected to one end of the main tube.

[0006] Furthermore, both the first and second suction heads are equipped with detachable protective caps.

[0007] Furthermore, the main tube is a hollow tube made of transparent PVC material, with a length of 10-15cm, an inner diameter of 2-3mm, and a wall thickness of 0.5mm.

[0008] Furthermore, the suction orifice diameter of both the first and second suction heads is 1 mm.

[0009] Furthermore, the outer wall of the main tube is provided with volume scale lines.

[0010] This utility model has at least the following beneficial effects:

[0011] This invention utilizes a dual-nozzle design, eliminating the need to replace nozzles and preventing cross-contamination. A sliding valve controls the opening and closing of the first nozzle's suction orifice, replacing manual plugging and thus avoiding the risk of liquid leakage. A simple flip switches the suction mode, simplifying the operation. The first and second one-way valves allow for unidirectional liquid intake. During use, when liquid attempts to flow in the opposite direction (such as during mixture transfer or dropper inversion), the valve plate of the one-way valve adheres tightly to the inner wall of the suction orifice under liquid pressure, forming a seal and preventing backflow, thus eliminating cross-contamination.

[0012] This invention enables rapid absorption, mixing, and transfer of two liquids, and is simple to operate, compact in structure, and significantly improves experimental efficiency. It is applicable to fields such as medical testing and chemical analysis.

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Reference numerals: 1. Main tube body; 2. First suction head; 21. First one-way valve; 3. Second suction head; 31. Second one-way valve; 4. Suction ball; 5. Sliding valve; 6. Protective cap. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Reference Figure 1 This utility model provides a dual-pipe mixing dropper, comprising:

[0019] The main tube 1 has a suction ball 4 on one side of its middle section; a first suction head 2 and a second suction head 3 are symmetrically arranged at both ends of the main tube 1; a sliding valve 5 and a first one-way valve 21 are sequentially arranged on one end of the first suction head 2 connected to the main tube 1; and a second one-way valve 31 is arranged on one end of the second suction head 3 connected to the main tube 1.

[0020] During use, the operator first opens the sliding valve 5, then squeezes the suction bulb 4 to create a pressure difference between the inside of the main tube 1 and the external environment. The valve plates of the first one-way valve 21 and the second one-way valve 31 are pushed outward by the pressure difference, allowing liquid to flow into the tube. The first suction head 2 is inserted into the first liquid to be mixed, and the suction bulb 4 is loosened slightly. Because the pressure inside the main tube 1 is lower than the external environment pressure, the first liquid is sucked into the main tube 1 through the first suction head 2. After the first liquid is absorbed, the main tube 1 is reversed, and the second suction head 3 is inserted into the second liquid to be mixed. The suction bulb 4 is loosened again. At this time, the pressure inside the main tube 1 is still lower than the external environment pressure, so the second liquid will be sucked into the main tube 1 through the second suction head 3. After the second liquid is absorbed, the sliding valve 5 is closed. The one-way valve will automatically close because there is no external negative pressure. Both suction heads are in a closed state at this time, ensuring that the two liquids exist only in the main tube 1 and preventing leakage. Shaking the tube ensures the two liquids are thoroughly mixed. Once mixed, open the sliding valve 5. Then, by squeezing the suction bulb 4, the mixture is discharged unidirectionally from the opening of the first suction head 2. It is worth noting that the space inside the suction bulb 4 is larger than the internal space of the pipette, allowing the dropper to draw up both liquids at once with just one squeeze of the suction bulb 4, without the need for multiple squeezes.

[0021] During use, due to the one-way valve, when the liquid attempts to flow backward (such as during mixture transfer or dropper inversion), the valve plate of the one-way valve presses tightly against the inner wall of the suction orifice under liquid pressure, forming a seal and preventing backflow. The core mechanism for the mixture to be discharged from the first suction head 2 lies in the physical opening and closing control of the sliding valve 5, rather than relying on the reverse conduction of the one-way valve. The one-way valve is only responsible for preventing backflow, while the sliding valve 5 provides an independent discharge channel for the mixture. This division of labor design retains the anti-contamination function of the one-way valve while ensuring efficient transfer of the mixture, resolving the contradiction between the one-way nature of the one-way valve and the discharge requirement.

[0022] Furthermore, both the first suction head 2 and the second suction head 3 are equipped with removable protective caps 6. The removable protective caps 6 prevent contaminants from entering the dropper when not in use. The protective caps 6 are made of food-grade silicone.

[0023] Furthermore, the main tube 1 is a hollow tube made of transparent PVC material, with a length of 10-15cm, an inner diameter of 2-3mm, and a wall thickness of 0.5mm.

[0024] Furthermore, the suction hole diameter of both the first suction head 2 and the second suction head 3 is 1mm.

[0025] Furthermore, the outer wall of the main tube 1 is provided with volume graduation lines. The outer wall of the main tube 1 can be laser-engraved with volume graduation lines (0.1ml accuracy), which facilitates precise control of liquid volume, thereby meeting the needs of high-precision experimental scenarios, and the laser graduations are wear-resistant and not easy to fall off.

[0026] It is worth noting that the inner wall of the main tube 1 can be provided with spiral patterns, which enhances the liquid mixing effect through the eddies generated when shaking, reduces the manual shaking time, enhances the liquid mixing efficiency, and thus reduces the experimental time.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-pipette mixing dropper, characterized in that, The application relates to a suction device for medical use. The main body pipe (1) is provided with a suction ball (4) on one side of the middle part; the main body pipe (1) is symmetrically provided with a first suction head (2) and a second suction head (3) at two ends; the first suction head (2) is connected with one end of the main body pipe (1) and sequentially provided with a sliding valve (5) and a first one-way valve (21); the second suction head (3) is connected with one end of the main body pipe (1) and provided with a second one-way valve (31).

2. A dual-suction liquid mixing dropper according to claim 1, wherein, The first suction head (2) and the second suction head (3) are provided with detachable protective caps (6).

3. A dual-suction liquid mixing dropper according to claim 1, wherein, The main body pipe (1) is a hollow pipe body made of transparent PVC material, with a length of 10-15 cm, an inner diameter of 2-3 mm and a wall thickness of 0.5 mm.

4. The dual-suction tip liquid mixing drip tube of claim 1, wherein, The suction hole diameters of the first suction head (2) and the second suction head (3) are both 1 mm.

5. A dual-suction liquid mixing dropper according to claim 1, wherein, The outer wall of the main body pipe (1) is provided with volume graduation lines.

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