Sample adding dropper with filtering function
By incorporating an extension tube and a filter screen into the dropper, the problem of the dropper's inability to filter glass fragments when the glass bottle is opened is solved, enabling clean addition of the solution and improving the dropper's practicality.
Patent Information
- Application Number
- CN202422459730.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-11
AI Technical Summary
Existing droppers cannot effectively filter out glass fragments when the glass bottle is opened, resulting in contamination of the solution.
A sample dropper with filtration function was designed, including a tube body, an extension tube and a filter screen, which can be detachably connected to separate the filtration and dropper processes.
It effectively filters out glass shards, avoids solution contamination, and improves the practicality of the dropper.
Smart Images
Figure CN223170944U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipettes, and particularly relates to a pipette with a filtering function. Background Art
[0002] There are fat-bellied pipettes and common pipettes, which are composed of a rubber nipple and a pointed glass tube. When dripping, the pipette should be kept perpendicular to the upper part of the container directly above, avoiding tilting, and it is strictly prohibited to invert. It cannot be inserted into the container, and it cannot touch the container wall. Except for sucking the solution, the tip of the tube cannot touch other objects to avoid contamination by impurities. It cannot be used for two purposes with one tube.
[0003] The current pipette structure is relatively simple. In a laboratory, liquid materials are generally stored in glass bottles. During the process of opening the glass bottle, some glass debris may fall into the solution, and general pipettes cannot filter this part of the debris during extraction. Content of the Utility Model
[0004] The utility model provides a pipette with a filtering function, aiming to solve the problem that during the process of opening a glass bottle, some glass debris may fall into the solution, and general pipettes cannot filter this part of the debris during extraction.
[0005] The utility model is realized as follows: A pipette with a filtering function includes a tube body. The bottom end of the tube body contracts inward to form a conical liquid inlet and outlet. An extension tube is detachably installed on the outer surface of the liquid inlet and outlet. A upper connection ring is fixedly connected to the bottom of the outer surface of the tube body. A lower connection ring is detachably installed inside the upper connection ring. The lower connection ring is fixedly connected to the outer surface of the extension tube. A plurality of filter mesh sheets are fixedly connected inside the extension tube;
[0006] The extension tube is detachably installed on the outer surface of the liquid inlet and outlet through the lower connection ring.
[0007] Preferably, the inner ring surface of the upper connection ring is provided with internal threads, and the outer surface of the lower connection ring is provided with external threads adapted to the internal threads. The lower connection ring is detachably installed inside the upper connection ring through the external threads.
[0008] Preferably, both the upper connection ring and the lower connection ring are made of glass.
[0009] Preferably, a scale is arranged on the outer surface of the tube body along its length direction.
[0010] Preferably, a rubber sleeve ring is sleeved on the outer surface of the lower connection ring.
[0011] Preferably, a rubber ball cap is fixedly connected to the top end of the tube body.
[0012] Beneficial effects
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: For a sample addition pipette with a filtering function of the present utility model, by providing an extension tube and a filter screen, when the pipette is in use, first install the extension tube at the bottom end of the tube body, then use the device to extract the solution. After the extraction is completed, remove the extension tube from the device, and the impurities blocked by the filter screen can be separated together. At this time, when the solution is dropped through the device, no impurities will cause pollution, thereby improving the practicability of the device. Description of the drawings
[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0015] Figure 2 It is a schematic diagram of the connection structure between the extension tube and the tube body of the present utility model;
[0016] Figure 3 It is a schematic diagram of the structure after the extension tube is removed in the present utility model.
[0017] In the figure: 1 - tube body, 2 - liquid outlet, 3 - extension tube, 4 - upper connection ring, 5 - internal thread, 6 - lower connection ring, 7 - external thread, 8 - filter screen, 9 - rubber sleeve ring, 10 - scale, 11 - rubber ball cap. Specific embodiments
[0018] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0019] Please refer to Figures 1-3 , the present utility model provides a technical solution: A sample addition pipette with a filtering function, including a tube body 1, the bottom end of the tube body 1 contracts inward to form a conical liquid inlet / outlet 2, an extension tube 3 is detachably installed on the outer surface of the liquid inlet / outlet 2, a upper connection ring 4 is fixedly connected to the bottom of the outer surface of the tube body 1, a lower connection ring 6 is detachably installed inside the upper connection ring 4, the lower connection ring 6 is fixedly connected to the outer surface of the extension tube 3, and a plurality of filter screens 8 are fixedly connected inside the extension tube 3;
[0020] The extension tube 3 is detachably installed on the outer surface of the liquid inlet / outlet 2 through the lower connection ring 6.
[0021] In this embodiment, when the dropper is in use, the extension tube 3 is first installed on the bottom end of the tube body 1, and then the device is used to extract the solution. After the extraction is completed, the extension tube 3 is removed from the device to separate the impurities blocked by the filter 8. At this time, there will be no contamination caused by impurities when the solution is dripped through the device, thereby improving the practicality of the device.
[0022] Furthermore, the inner ring surface of the upper connecting ring 4 is provided with an internal thread 5, and the outer surface of the lower connecting ring 6 is provided with an external thread 7 adapted to the internal thread 5. The lower connecting ring 6 is detachably mounted inside the upper connecting ring 4 through the external thread 7.
[0023] In this embodiment, the extension tube 3 is connected and fixed to the upper connecting ring 4 on the outer surface of the tube body 1 through the lower connecting ring 6 fixedly connected to its outer surface. When it is installed on the tube body 1, the liquid inlet and outlet 2 at the bottom end of the tube body 1 will enter the interior of the extension tube 3 and communicate with it, thereby realizing the function of extracting solution.
[0024] Furthermore, the upper connecting ring 4 and the lower connecting ring 6 are both made of glass.
[0025] In this embodiment, glass is relatively stable and does not easily react with most solutions, and is a common material for droppers.
[0026] Furthermore, the outer surface of the tube body 1 is provided with scales 10 along its length.
[0027] A rubber ball cap 11 is fixedly connected to the top end of the tube body 1 .
[0028] In this embodiment, the scale 10 enables people to know the volume of the solution inside the dropper.
[0029] When the rubber ball cap 11 is pressed, the air pressure inside the dropper will increase and the gas inside will be discharged. At this time, the bottom end of the dropper is inserted into the solution and the rubber ball cap 11 is released. The rubber ball cap 11 recovers under the action of its own material. At this time, the air pressure inside the dropper becomes smaller, and the solution can be drawn into the dropper. Otherwise, the solution inside the dropper will be discharged.
[0030] Furthermore, a rubber ring 9 is sleeved on the outer surface of the lower connecting ring 6 .
[0031] In this embodiment, the friction force of the rubber sleeve 9 is relatively large, which makes it easier for people to rotate the lower connecting ring 6 and thus facilitates people to install and remove the extension tube 3 .
[0032] Working principle and usage process of the present utility model: After the present utility model is installed, when the dropper is in use, first install the extension tube 3 at the bottom end of the tube body 1, and then use the device to extract the solution. After the extraction is completed, remove the extension tube 3 from the device, and the impurities blocked by the filter screen 8 can be separated together. At this time, when the solution is dropped through the device, no impurities will cause pollution, thereby improving the practicability of the device.
[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A pipette with a filtering function, characterized in that: It includes a tube body (1), the bottom end of the tube body (1) contracts inward to form a tapered liquid inlet and outlet (2), an extension tube (3) is detachably installed on the outer surface of the liquid inlet and outlet (2), a upper connecting ring (4) is fixedly connected to the bottom of the outer surface of the tube body (1), a lower connecting ring (6) is detachably installed inside the upper connecting ring (4), the lower connecting ring (6) is fixedly connected to the outer surface of the extension tube (3), and a plurality of filter mesh sheets (8) are fixedly connected inside the extension tube (3); The extension tube (3) is detachably installed on the outer surface of the liquid inlet and outlet (2) through the lower connecting ring (6).
2. The pipette with a filtering function according to claim 1, characterized in that: The inner ring surface of the upper connecting ring (4) is provided with internal threads (5), the outer surface of the lower connecting ring (6) is provided with external threads (7) adapted to the internal threads (5), and the lower connecting ring (6) is detachably installed inside the upper connecting ring (4) through the external threads (7).
3. The pipette with a filtering function according to claim 1, characterized in that: Both the upper connecting ring (4) and the lower connecting ring (6) are made of glass material.
4. The pipette with a filtering function according to claim 1, characterized in that: A scale (10) is arranged on the outer surface of the tube body (1) along its length direction.
5. The pipette with a filtering function according to claim 1, wherein: A rubber sleeve ring (9) is sleeved on the outer surface of the lower connecting ring (6).
6. The pipette with a filtering function according to claim 1, characterized in that: A rubber ball cap (11) is fixedly connected to the top end of the tube body (1).