A range adjustment mechanism for an electric pipette

Abstract

The utility model belongs to pipette technical field relates to a kind of electric pipette range adjusting mechanism, including electric pipette body, the lower end of electric pipette body is provided with connecting pipe, the outside of connecting pipe is clamped and is connected with connector, the lower end of connector is provided with liquid suction container, the lower end of liquid suction container is fixedly connected with suction tube, liquid suction container is located the inside of lifting groove and with lifting groove sliding connection, liquid suction tube, liquid suction container, connector inside each other through, and lifting mechanism is arranged between liquid suction container and connector.The utility model can change the volume of its internal cavity by lifting liquid suction container, before device executes liquid suction operation, the specific size of the internal cavity of liquid suction container can be set in advance according to actual liquid dosage requirement, so that the pre-set cavity is used as the control reference of liquid suction amount, so that the required liquid amount is accurately matched in the subsequent formal liquid suction process, effectively avoid the situation that liquid is sucked in excess.

Description

Technical Field

[0001] This utility model belongs to the field of pipette technology and relates to an electric pipette range adjustment mechanism. Background Technology

[0002] Electric pipettes are core equipment in laboratories for the precise transfer of minute amounts of liquid. They are indispensable tools in life science and chemistry laboratories and are often referred to as "the scientist's extended hand." Users can easily complete liquid aspiration and dispensing operations by setting the volume and attaching disposable tips. Their high accuracy and precision ensure the reliability and reproducibility of various experiments, from PCR reactions to drug screening.

[0003] In experimental operations in fields such as biopharmaceuticals, clinical testing, and environmental monitoring, electric pipettes are key tools for achieving precise liquid transfer. The performance of their aspiration container (i.e., the internal cavity of the pipette tip) directly affects the accuracy, applicability, and experimental efficiency of liquid transfer.

[0004] However, most current mainstream electric pipette tips adopt a fixed-volume design, meaning that the size of the internal container of the tip is determined at the factory and cannot be flexibly adjusted according to the differences in liquid volume in actual experiments. This design flaw has gradually become apparent in diverse liquid transfer scenarios, becoming an important factor restricting the improvement of experimental efficiency and accuracy. From the perspective of the diversity of experimental needs, different experiments have vastly different requirements for liquid transfer volume. Since the container size of existing electric pipette tips is fixed, researchers often need to frequently change tips with corresponding volume specifications when facing different volume requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is that, from the perspective of the diversity of experimental needs, different experiments have very different requirements for the amount of liquid transferred. Since the size of the container of the existing electric pipette tip is fixed, when faced with different volume requirements, the experimenters often need to frequently change the pipette tip with the corresponding volume specification.

[0006] The present invention discloses an electric pipette range adjustment mechanism, comprising an electric pipette body, a connecting tube at the lower end of the electric pipette body, and a connector snapped onto the outer side of the connecting tube. The connector is characterized in that: a suction container is provided at the lower end of the connector, a suction tube is fixedly connected to the lower end of the suction container, a lifting groove is formed on the inner side of the connector, the suction container is located inside the lifting groove and slidably connected to the lifting groove, the suction tube, the suction container, and the connector are internally interconnected, and a lifting mechanism is provided between the suction container and the connector.

[0007] The lifting mechanism includes a fixed ring. The outer side of the liquid suction container is fixedly connected to the fixed ring. The inner side of the fixed ring is symmetrically rotatably connected to a rotating rod. The upper end of the rotating rod is fixedly connected to a threaded rod. The inner side of the connector is symmetrically provided with threaded grooves. The threaded rod is located inside the threaded groove and is threadedly connected to the threaded groove.

[0008] Gear columns are fixedly connected to the outer sides of the lower ends of the two rotating rods. A rotating ring is rotatably connected to the upper end of the fixed ring. A gear ring is fixed to the inner side of the rotating ring. The gear ring meshes with the two gear columns.

[0009] A dustproof cylinder is fixedly connected to the upper end of the rotating ring. A limiting groove is opened on the inner side of the connector. The dustproof cylinder is located inside the limiting groove and is slidably connected to the limiting groove.

[0010] The liquid suction container, suction tube, and dustproof cylinder are made of transparent material.

[0011] A scale is engraved on the outside of the liquid suction container.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by raising and lowering the liquid suction container, the volume of its internal cavity can be changed. Before the device performs the liquid suction operation, the specific size of the internal cavity of the liquid suction container can be set in advance according to the actual liquid usage requirements. The preset cavity is used as the control benchmark for the liquid suction volume, so that the required liquid volume can be accurately matched during the subsequent formal liquid suction process, effectively avoiding the situation of excessive liquid suction. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0015] Figure 2 This is a schematic diagram of the connector structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the liquid suction container of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the liquid suction container of this utility model.

[0018] In the diagram: 101, Electric pipette body; 102, Connecting tube; 103, Connector; 104, Aspiration container; 105, Aspiration tube; 106, Lifting groove; 201, Rotating rod; 202, Threaded groove; 203, Threaded rod; 204, Fixing ring; 301, Gear column; 302, Rotating ring; 303, Gear ring; 401, Dustproof casing; 402, Limiting groove; 601, Scale. Detailed Implementation

[0019] 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 and embodiments. 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 present utility model.

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] Example

[0024] like Figure 1 - Figure 4 As shown, an electric pipette range adjustment mechanism includes an electric pipette body 101, a connecting tube 102 at the lower end of the electric pipette body 101, and a connector 103 snapped onto the outer side of the connecting tube 102. The mechanism is characterized in that: a suction container 104 is provided at the lower end of the connector 103, a suction tube 105 is fixedly connected to the lower end of the suction container 104, a lifting groove 106 is formed on the inner side of the connector 103, the suction container 104 is located inside the lifting groove 106 and is slidably connected to the lifting groove 106, and the suction tube 105, the suction container 104, and the connector 103 are internally interconnected.

[0025] The volume of the internal cavity of the liquid suction container 104 can be changed by raising and lowering it. Before the device performs the liquid suction operation, the specific size of the internal cavity of the liquid suction container 104 can be set in advance according to the actual liquid usage requirements. The preset cavity is used as the control benchmark for the liquid suction volume, so that the required liquid volume can be accurately matched during the subsequent formal liquid suction process, effectively avoiding the situation of excessive liquid suction.

[0026] To allow the liquid suction container 104 to be raised and lowered more effectively, a lifting mechanism is provided between the liquid suction container 104 and the connector 103.

[0027] The lifting mechanism includes a fixed ring 204. The fixed ring 204 is fixedly connected to the outer side of the liquid suction container 104. A rotating rod 201 is symmetrically rotatably connected to the inner side of the fixed ring 204. A threaded rod 203 is fixedly connected to the upper end of the rotating rod 201. Threaded grooves 202 are symmetrically opened on the inner side of the connector 103. The threaded rod 203 is located inside the threaded groove 202 and is threadedly connected to the threaded groove 202.

[0028] Gear rods 301 are fixedly connected to the outer sides of the lower ends of the two rotating rods 201. A rotating ring 302 is rotatably connected to the upper end of the fixed ring 204. A gear ring 303 is fixed to the inner side of the rotating ring 302. The gear ring 303 is meshed with the two gear rods 301.

[0029] When the user needs to adjust the volume of the internal cavity of the liquid suction container 104, the rotating ring 302 is rotated, which meshes with the two gear columns 301 through the gear ring 303, thereby driving the two rotating rods 201 to rotate synchronously. When the rotating rod 201 rotates, it synchronously drives the threaded rod 203 to rotate, and the threaded rod 203 is threadedly connected to the threaded groove 202, so that the rotating rod 201 drives the liquid suction container 104 to rise and fall through the fixed ring 204.

[0030] To prevent dust from entering between the rotating ring 302 and the rotating rod 201, a dustproof cylinder 401 is fixedly connected to the upper end of the rotating ring 302. A limiting groove 402 is opened on the inner side of the connector 103. The dustproof cylinder 401 is located inside the limiting groove 402 and is slidably connected to the limiting groove 402.

[0031] The rotating rod 201 blocks dust, preventing dust from entering between the rotating ring 302 and the rotating rod 201. Since there are sharp edges and gaps between the rotating rings 302, it is more troublesome for users to clean them after dust enters. The rotating ring 302 blocks the dust, and the rotating rod 201 makes it easier for users to clean the device.

[0032] The liquid suction container 104, the liquid suction tube 105, and the dustproof cylinder 401 are made of transparent material;

[0033] When the liquid suction container 104, the liquid suction tube 105, and the dustproof tube 401 are made of transparent material, the user can more intuitively observe the solution inside the liquid suction container 104.

[0034] A scale 601 is engraved on the outside of the liquid suction container 104;

[0035] The scale 601 allows the user to more clearly determine the size of the internal cavity of the liquid suction container 104.

[0036] During operation, before the device performs the liquid suction operation, the specific size of the internal cavity of the suction container 104 can be set in advance according to the actual liquid usage requirements.

[0037] Specifically, when the user needs to adjust the volume of the internal cavity of the liquid suction container 104, the rotating ring 302 is rotated, which meshes with the two gear columns 301 through the gear ring 303, thereby driving the two rotating rods 201 to rotate synchronously. When the rotating rods 201 rotate, they synchronously drive the threaded rods 203 to rotate, and the threaded rods 203 are threadedly connected to the threaded grooves 202, so that the rotating rods 201 drive the liquid suction container 104 to rise and fall through the fixed ring 204. The preset cavity is used as the control benchmark for the amount of liquid suction, so that the required amount of liquid is accurately matched in the subsequent formal liquid suction process, effectively avoiding the situation of excessive liquid suction.

[0038] Because there are sharp edges and gaps between the rotating rings 302 and 302, it is difficult for users to clean them after dust gets in. In order to prevent dust from getting between the rotating rings 302 and the rotating rod 201, the rotating rod 201 blocks the dust, thus preventing dust from getting between the rotating rings 302 and the rotating rod 201. The surface of the rotating rod 201 makes it easier for users to clean the device.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An electric pipette range adjustment mechanism, comprising an electric pipette body (101), wherein a connecting tube (102) is provided at the lower end of the electric pipette body (101), and a connector (103) is snapped onto the outer side of the connecting tube (102), characterized in that: The lower end of the connector (103) is provided with a liquid suction container (104), and the lower end of the liquid suction container (104) is fixedly connected with a liquid suction tube (105). A lifting groove (106) is opened on the inner side of the connector (103). The liquid suction container (104) is located inside the lifting groove (106) and is slidably connected to the lifting groove (106). The liquid suction tube (105), the liquid suction container (104), and the connector (103) are interconnected. A lifting mechanism is provided between the liquid suction container (104) and the connector (103).

2. The electric pipette range adjustment mechanism according to claim 1, characterized in that: The lifting mechanism includes a fixed ring (204), which is fixedly connected to the outside of the liquid suction container (104). A rotating rod (201) is symmetrically rotatably connected to the inside of the fixed ring (204). A threaded rod (203) is fixedly connected to the upper end of the rotating rod (201). Threaded grooves (202) are symmetrically opened on the inside of the connector (103). The threaded rod (203) is located inside the threaded groove (202) and is threadedly connected to the threaded groove (202).

3. The electric pipette range adjustment mechanism according to claim 2, characterized in that: Gear rods (301) are fixedly connected to the outer sides of the lower ends of the two rotating rods (201). A rotating ring (302) is rotatably connected to the upper end of the fixed ring (204). A gear ring (303) is fixed to the inner side of the rotating ring (302). The gear ring (303) meshes with the two gear rods (301).

4. The electric pipette range adjustment mechanism according to claim 3, characterized in that: The upper end of the rotating ring (302) is fixedly connected to a dustproof cylinder (401), and a limiting groove (402) is opened on the inner side of the connector (103). The dustproof cylinder (401) is located inside the limiting groove (402) and is slidably connected to the limiting groove (402).

5. The electric pipette range adjustment mechanism according to claim 1, characterized in that: The liquid suction container (104), the liquid suction tube (105), and the dustproof tube (401) are made of transparent material.

6. The electric pipette range adjustment mechanism according to claim 1, characterized in that: A scale (601) is engraved on the outside of the liquid suction container (104).

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