A quantitative droplet tube

Abstract

This invention relates to the field of experimental equipment and provides a quantitative liquid dispensing tube, comprising a push tube, a tube body, a bottom tube, and a dispensing head connected end-to-end from top to bottom. Each of the push tube, tube body, bottom tube, and dispensing head has a through-cavity. A sliding groove is provided on the side of the push tube, and a pushing structure is located inside the cavity of the push tube. A piston is located at the bottom of the pushing structure inside the tube body, and a pushing handle, passing through the sliding groove and located outside the push tube, is provided on the side of the pushing structure. Several locking slots are provided on the sliding groove, into which the pushing handle can be engaged. The distance between adjacent locking slots corresponds to the amount of liquid squeezed out of the tube body by the piston. Therefore, this device can achieve precise control of the liquid dispensing volume. Simultaneously, this dispensing tube has good sealing properties, can be stored for a certain period of time, enhances reusability, and improves the efficiency and accuracy of experimental operations. It is suitable for various experimental scenarios requiring precise liquid dispensing.

Description

Technical Field

[0001] This invention relates to the field of experimental equipment and provides a quantitative dripping tube. Background Technology

[0002] Droplets, a common laboratory tool, are primarily used for the precise transfer of small amounts of liquid, especially in microanalysis and liquid dispensing processes. They are typically made of transparent glass or plastic, featuring a slender body and a small nozzle for easy control of the liquid volume. Commercially available droplets are used by manually squeezing or drawing in air to control the liquid flow, and are widely used in laboratories for accurate titrations, sample dispensing, and other similar tasks.

[0003] Droplets have a wide range of applications, playing a vital role in chemical analysis, medical research, food testing, drug development, and biological experiments. In these fields, droplets are used for the precise measurement and transfer of various liquids, ensuring accurate liquid distribution, especially in high-precision experiments. Furthermore, droplets are frequently used in pharmaceuticals, environmental monitoring, and educational experiments, becoming an indispensable tool.

[0004] However, most droplet tubes on the market are currently designed with an open structure, making them ineffective for liquid storage. Due to their structural characteristics, droplet tubes are typically only suitable for immediate use and do not have the capability to store liquids for extended periods. In some applications, droplet tubes need to store liquids for a certain period; however, traditional droplet tubes are prone to liquid evaporation or leakage during storage and cannot effectively maintain the stability and quality of the liquid. Utility Model Content

[0005] To address the aforementioned deficiencies, the present invention aims to provide a quantitative dripping tube to solve the problems mentioned in the background art. The device includes a push tube, a tube body, a bottom tube, and a dripping head connected end to end from top to bottom. The push tube, tube body, bottom tube, and dripping head are provided with through cavities inside.

[0006] The push tube has a groove on its side, and a push structure is provided inside the cavity of the push tube. A piston is provided at the bottom of the push structure and located inside the tube body. A push handle is provided on the side of the push structure, passing through the groove and located outside the push tube. The groove has several slots, and the push handle can be inserted into the slots. The distance between adjacent slots corresponds to the amount of liquid squeezed out of the tube body by the piston.

[0007] Furthermore, the tube body is provided with scale lines; the positional relationship between the push handle and each slot corresponds to the different positional relationship of the piston on the scale lines.

[0008] Furthermore, the bottom tube is threaded, and the bottom of the drip tube is detachably connected to a lower cap via the thread on the bottom tube.

[0009] Furthermore, a tapered portion is fixedly connected between the tube body and the bottom tube, the diameter of the tapered portion gradually decreases from top to bottom, the diameter of the bottom tube is smaller than the diameter of the tube body, and the internal cavity of the drip head is a capillary cavity.

[0010] Furthermore, the inner bottom of the lower cap is provided with a tube plug that matches the end opening of the drip head.

[0011] Furthermore, the pushing structure is provided with a socket, and the pushing handle is provided with a plug that mates with the socket.

[0012] Furthermore, a connecting post is fixedly connected to the top of the pushing structure, and a connecting hole is provided at the top of the connecting post. One end of a connecting wire is fixedly connected to the connecting hole. A top tube is provided at the top of the pushing tube, and an upper cap is detachably connected to the top of the top tube. The upper cap is fixedly connected to the other end of the connecting wire.

[0013] Furthermore, a rubber ring is fitted around the outside of the piston.

[0014] This invention achieves precise control of the liquid dripping amount by combining the push handle with the slot and the scale lines on the tube body. At the same time, this dripping tube has good sealing performance and can be placed for a certain period of time, which enhances reusability and improves the efficiency and accuracy of experimental operations. It is suitable for various experimental scenarios that require precise liquid dripping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device structure;

[0016] Figure 2 This is a cross-sectional view of the device structure;

[0017] Figure 3 This is a schematic diagram of the push structure;

[0018] Figure 4 for Figure 2 Enlarged view of the A-section structure;

[0019] In the diagram: 11-tube body; 111-scale line; 12-push tube; 120-slide groove; 121-slot; 13-top tube; 131-opening; 132-upper thread; 14-conical part; 15-bottom tube; 16-drip head; 2-lower cap; 21-tube head plug; 3-upper cap; 31-connecting part; 4-push structure; 41-connecting post; 411-connecting hole; 42-push handle; 43-piston; 431-rubber ring; 5-connecting line. Detailed Implementation

[0020] 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.

[0021] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0024] See Figure 1-4 The purpose of this utility model is to provide a quantitative dripping tube, which includes a top tube 13, a push tube 12, a tube body 11, a bottom tube 15, and a dripping head 16 connected end to end from top to bottom. The top tube 13, push tube 12, tube body 11, bottom tube 15, and dripping head 16 have internal cavities and are interconnected. The top tube 13, push tube 12, tube body 11, bottom tube 15, and dripping head 16 can be integrally connected or separately connected.

[0025] The push tube 12 has a sliding groove 120 on its side. A push structure 4 is located inside the cavity of the push tube 12, and a piston 43 is located at the bottom of the push structure 4, which is fitted inside the tube body 11. A push handle 42 is located on the side of the push structure 4, passing through the sliding groove 120 and positioned outside the push tube 12. The user can push the push structure 4 using the push handle 42, causing it to slide inside the push tube 12, thereby driving the piston 43 to slide inside the tube body 11. The tube body 11 is etched with graduation lines 111. The graduation lines 111 allow operators to easily observe the consumption of the internal liquid and control the amount of liquid added. The sliding groove 120 has several slots 121. When the push handle 42 is pushed to the position corresponding to a slot 121, rotating the push handle 42 will engage it within the slot 121. The positional relationship between the push handle 42 and each slot 121 corresponds to the different positions of the piston on the graduation lines 111. In other words, the distance between several slots 121 corresponds to the amount of liquid inside the piston extrusion tube 11.

[0026] In one embodiment, the distance between the two slots 121 corresponds to a liquid volume of 15 ml stored at the same distance within the tube 11; that is, when the push handle 42 moves from one slot 121 to the next, the piston 43 dispenses 15 ml of liquid, and so on. Therefore, when adding experimental liquid in a quantitative manner, the operator can press down on the push handle 42 while simultaneously rotating it with a certain force. When it reaches the next slot 121, the push handle 42 immediately engages inside the slot 121, quickly completing the quantitative dispensing process without worrying about over-dispensing.

[0027] Preferably, the bottom tube 15 is threaded, and the bottom of the drip tube is detachably connected to the lower cap 2 through the thread on the bottom tube 15. The lower cap 2 can seal the end opening of the drip head 16, so that the liquid storage drip tube can be placed for a long time after being filled with liquid. When in use, simply remove the lower cap 2 to use it immediately.

[0028] Preferably, a tapered portion 14 is fixedly connected between the tube body 11 and the bottom tube 15. The diameter of the tapered portion 14 gradually decreases from top to bottom, and the diameter of the bottom tube 15 is smaller than the diameter of the tube body 11. The internal cavity of the drip head 16 is a capillary cavity. When the lower cap 2 is installed at the bottom of the tube body 11, the tapered portion 14, the bottom tube 15, and the drip head 16 are all contained inside the lower cap 2, thereby ensuring that the drip head 16 is not contaminated when not in use. At the same time, the outer diameter of the lower cap 2 is the same as that of the tube body 11, making the device more aesthetically pleasing and easier to hold and place.

[0029] Preferably, the inner bottom of the lower cap 2 is provided with a tube plug 21 that mates with the end opening of the drip head 16. The tube plug 21 can be inserted into the end opening of the drip head 16 when the lower cap 2 is installed on the tube body 11, thereby achieving a better sealing effect.

[0030] Preferably, the push tube 12 and the tube body 11 are installed separately by adhesive bonding; specifically, the tube body 11 is made of transparent glass or rigid transparent plastic, and the push tube 12 is made of frosted plastic or other rigid material, which makes the cost of the device lower while ensuring the effect of use.

[0031] Preferably, the push handle 42 and the push structure 4 are detachably connected. That is, the push structure 4 is provided with an insertion hole, and the push handle 42 is provided with an insertion rod. During installation, the push structure 4 can be placed into the designated position of the push tube 12 first, and then the push handle 42 can be inserted into the push structure 4 from the outside to complete the installation.

[0032] Preferably, the top of the pushing structure 4 is fixedly connected to a connecting post 41, and the top of the connecting post 41 is provided with a connecting hole 411, in which one end of a connecting wire 5 is fixedly connected. The top of the top tube 13 is provided with an opening 131, and an upper cap 3 is detachably connected to the opening 131 by an upper thread 132. The upper cap 3 is provided with a connecting part 31, and the connecting part 31 is fixedly connected to the other end of the connecting wire 5. Thus, the pushing structure 4 can be easily pulled out through the connecting wire 5.

[0033] Preferably, the piston 43 is fitted with a rubber ring 431 on its outside. The rubber ring 431 can eliminate the gap between the piston 43 and the inner side of the tube 11, prevent air from entering the tube 11, and prevent leakage during pushing.

[0034] In summary, when liquid dripping is required, the user can hold the push handle 42 of the push tube 12 and press the push handle 42 to push the push structure 4 to slide inside the push tube 12, thereby causing the piston 43 to slide inside the tube body 11, allowing the liquid inside the tube body 11 to drip out through the drip head 16. Since the tube body 11 is etched with graduation lines 111, the user can clearly observe the consumption status of the internal liquid and accurately control the amount of liquid added by controlling the downward pressure distance of the push handle 42 in conjunction with the setting of the slot 121. When the push handle 42 moves to the position corresponding to the slot 121, the push handle 42 is rotated to lock into the slot 121, thus quickly completing the quantitative dripping process and effectively avoiding excessive liquid dripping. After the dripping operation is completed, the lower cap 2 can be tightened onto the bottom tube 15, and the end opening of the drip head 16 can be sealed with the tube head plug 21 to prevent liquid leakage and contamination of the drip head 16, facilitating long-term storage and future use of the drip tube.

[0035] Therefore, the device can achieve precise control of the liquid dripping amount by cooperating the push handle 42 with the slot 121 and the scale line 111 on the tube body 11. At the same time, the drip tube has good sealing performance and can be placed for a certain period of time, which enhances reusability and improves the efficiency and accuracy of experimental operations. It is suitable for various experimental scenarios that require precise liquid dripping.

[0036] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A quantitative dripping tube, characterized in that, It includes a push tube (12), a tube body (11), a bottom tube (15) and a drip head (16) connected end to end from top to bottom. The push tube (12), tube body (11), bottom tube (15) and drip head (16) are provided with through cavities inside. The push tube (12) has a sliding groove (120) on its side. The cavity of the push tube (12) has a push structure (4). The bottom of the push structure (4) has a piston (43) located inside the tube body (11). The side of the push structure (4) has a push handle (42) that passes through the sliding groove (120) and is located outside the push tube (12). The sliding groove (120) has several slots (121). The push handle (42) can be inserted into the slots (121). The distance between adjacent slots (121) corresponds to the amount of liquid squeezed out of the tube body (11) by the piston (43).

2. The quantitative drip tube according to claim 1, characterized in that, The tube body (11) is provided with scale lines (111); the positional relationship between the push handle (42) and each slot (121) corresponds to the different positional relationship of the piston (43) on the scale lines (111).

3. The quantitative drip tube according to claim 1, characterized in that, The bottom tube (15) is threaded, and the bottom of the drip tube is detachably connected to a lower cap (2) via the thread on the bottom tube (15).

4. The quantitative drip tube according to claim 1, characterized in that, A tapered part (14) is fixedly connected between the tube body (11) and the bottom tube (15). The diameter of the tapered part (14) gradually decreases from top to bottom. The diameter of the bottom tube (15) is smaller than that of the tube body (11). The cavity inside the drip head (16) is a capillary cavity.

5. The quantitative drip tube according to claim 3, characterized in that, The bottom of the lower cap (2) is provided with a tube plug (21) that matches the end opening of the drip head (16).

6. The quantitative drip tube according to claim 1, characterized in that, The push structure (4) is provided with a socket, and the push handle (42) is provided with a plug that cooperates with the socket.

7. The quantitative drip tube according to claim 1, characterized in that, The top of the push structure (4) is fixedly connected to a connecting post (41), and the top of the connecting post (41) is provided with a connecting hole (411). One end of the connecting wire (5) is fixedly connected in the connecting hole (411). The top of the push tube (12) is provided with a top tube (13), and the top of the top tube (13) is detachably connected to an upper cap (3). The upper cap (3) is fixedly connected to the other end of the connecting wire (5).

8. The quantitative drip tube according to claim 1, characterized in that, The piston (43) is fitted with a rubber ring (431).

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