Pipetting device for chemical experiment
By designing leakage and disengagement mechanisms in the pipetting device, the problem of liquid leakage and disengagement of the suction tube in chemical experiments is solved, and the stability and safety of the experiment are achieved.
Patent Information
- Application Number
- CN202420512907.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-15
AI Technical Summary
In chemical experiments, the suction tube of the pipette device is prone to enter and drip due to debris when used on the installation rack, and is prone to disengage during bumps and vibrations, resulting in unstable experiments and erroneous operation.
A pipetting device including a placement frame, a leakproof mechanism and an anti-detachment mechanism are designed. The leakage prevention mechanism seals the bottom end of the suction pipe through a movable block, a hollow rod, a movable rod and a limit screw to prevent liquid from leaking; an anti-detachment mechanism Secure the suction tube position by fixing frame, slider, limit rod and connecting rod to prevent disengagement.
Effectively prevent liquid leakage and suction tube from falling apart, ensuring the stability and safety of the experimental process.
Smart Images
Figure CN222240332U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chemical experiment equipment, in particular to a liquid transfer device for chemical experiments. Background Art
[0002] Chemical experiment operation refers specifically to the use and storage of drugs in the laboratory, the connection and assembly of instruments, and the washing. It mainly introduces the principles and steps that must be followed during the operation. These steps should be strictly followed in specific experiments to prevent accidents or experimental errors. When conducting chemical experiments, experimenters often need to use pipetting devices to extract and transfer liquids for testing.
[0003] When transferring, a transfer device is required, that is, the liquid is sucked into the suction tube, and then placed on the mounting rack for transfer. However, after the sample is sucked, the bottom end of the suction tube directly contacts the bottom end of the mounting rack, which can easily cause debris to enter the suction tube, resulting in the internal reagent being left unattended and the internal liquid leaking. At the same time, when there is bumps and vibrations, the suction tube is easily detached from the mounting rack, so a device is urgently needed to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a liquid transfer device for chemical experiments to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid transfer device for chemical experiments, comprising a placement frame, handles are fixedly arranged on both sides of the placement frame for facilitating the movement of the placement frame, a plurality of through holes are opened at the top of the placement frame, a plurality of placement grooves are opened at the bottom of the placement frame, a suction tube is arranged inside the through holes, a leak-proof mechanism is arranged on the outside of the suction tube to prevent liquid leakage, an anti-detachment mechanism is arranged on the top of the placement frame to prevent the suction tube from detaching, a piston rod is movably inserted inside the suction tube to facilitate the absorption and extrusion of liquid, the leak-proof mechanism comprises a movable block, a hollow rod, a movable rod, a limit screw and a cushion block, the movable The movable block is movably embedded in the outside of the suction tube, the hollow rod is fixed at the center position of the bottom end of the movable block, the movable rod is movably inserted inside the hollow rod, the cushion block is fixed at the bottom end of the movable rod, and the limiting screw is inserted through a thread on one side of the hollow rod. When in use, the liquid is sucked into the suction tube, and then the hollow rod is rotated to move the cushion block to the bottom end of the suction tube, and then the cushion block is moved upward to move the bottom end of the suction tube to the inside of the circular groove and tightly adhere to the bottom end of the circular groove, and then the limiting screw is rotated to squeeze the outside of the movable rod, so as to fix the position of the movable rod and seal the bottom end of the suction tube to prevent leakage and prevent the internal liquid from being contaminated.
[0006] Preferably, the anti-detachment mechanism includes a fixed frame, a slider, a limit rod and a connecting rod, the fixed frame is fixed at the top position of the placement frame, the slider is slidably arranged at the top of the fixed frame, the connecting rod is fixed at a position between the sliders, and the limit rod is fixed at a bottom position of the slider. When the suction tube is placed in use, the slider is moved along the fixed frame, and all the sliders are linked by the connecting rod to drive the connecting rod to move until the connecting rod moves to the top position of the movable block, thereby limiting the position of the entire suction tube to prevent the suction tube from detaching from the placement frame, thereby preventing the suction tube from falling.
[0007] Preferably, two movable blocks are provided and symmetrically and movably installed on both sides of the suction tube.
[0008] Preferably, a circular groove is formed at the top of the cushion block, and a rubber pad is bonded to the bottom of the circular groove.
[0009] Preferably, a rotating block for facilitating the rotation of the limiting screw is fixedly provided on one side of the limiting screw.
[0010] Preferably, there is a friction force between the slider and the fixed member that hinders the movement of the slider.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. The utility model sucks the liquid into the suction tube, then rotates the hollow rod to move the cushion block to the bottom of the suction tube, then moves the cushion block upward to move the bottom of the suction tube to the inside of the circular groove and closely adhere to the bottom of the circular groove, then rotates the limit screw to squeeze the outside of the movable rod, thus fixing the position of the movable rod, thus blocking the bottom of the suction tube to prevent leakage and prevent the internal liquid from being contaminated;
[0013] 2. When the suction tube is installed during use, the slider is moved along the fixed frame, and all the sliders are linked by the connecting rod to drive the connecting rod to move until the connecting rod moves to the top position of the movable block, thereby limiting the position of the entire suction tube and preventing the suction tube from detaching from the installation frame, thereby preventing the suction tube from falling. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of a liquid transfer device for chemical experiments according to the utility model;
[0015] Figure 2 This is a cross-sectional view of a liquid transfer device for chemical experiments according to the utility model;
[0016] Figure 3 This is a side view of a liquid transfer device for chemical experiments according to the utility model;
[0017] Figure 4This is an enlarged schematic diagram of a liquid transfer device A for chemical experiments of the utility model;
[0018] Figure 5 This is an enlarged schematic diagram of a liquid transfer device B for chemical experiments of the utility model;
[0019] Figure 6 It is an enlarged schematic diagram of a liquid transfer device C for chemical experiments according to the present utility model.
[0020] In the figure: 1. mounting frame; 2. handle; 3. perforation; 4. suction tube; 5. piston rod; 6. hollow rod; 7. movable rod; 8. limiting screw; 9. mounting groove; 10. cushion block; 11. movable block; 12. fixing frame; 13. sliding block; 14. limiting rod; 15. connecting rod. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-6 The utility model provides a liquid transfer device for chemical experiments, including a placement frame 1, handles 2 for facilitating the movement of the placement frame 1 are welded and fixed on both sides of the placement frame 1, a plurality of through holes 3 are provided on the top of the placement frame 1, a plurality of placement grooves 9 are provided on the bottom of the placement frame 1, a suction tube 4 is arranged inside the through holes 3, a leak-proof mechanism is provided on the outside of the suction tube 4 to prevent liquid leakage, an anti-detachment mechanism is provided on the top of the placement frame 1 to prevent the suction tube 4 from detaching, a piston rod 5 is movably inserted inside the suction tube 4 to facilitate the absorption and extrusion of liquid, the leak-proof mechanism includes a movable block 11, a hollow rod 6, a movable rod 7, a limiting screw 8 and a cushion block 10, the movable block 11 is movably embedded on the outside of the suction tube 4, there are two movable blocks 11, which are symmetrically movably installed on both sides of the suction tube 4, and the hollow rod 6 is welded It is connected and fixed at the center position of the bottom end of the movable block 11, the movable rod 7 is movably inserted into the hollow rod 6, the cushion block 10 is welded and fixed at the bottom end of the movable rod 7, a circular groove is opened on the top of the cushion block 10, and a rubber pad is bonded to the bottom end of the circular groove, and the limiting screw 8 is inserted into one side of the hollow rod 6 through a thread. When in use, the liquid is sucked into the inside of the suction tube 4, and then the hollow rod 6 is rotated to make the cushion block 10 move to the bottom end of the suction tube 4, and then the cushion block 10 is moved upward to make the bottom end of the suction tube 4 move to the inside of the circular groove and close to the bottom end of the circular groove, and then the limiting screw 8 is rotated to squeeze the outside of the movable rod 7, so as to fix the position of the movable rod 7, and thus the bottom end of the suction tube 4 is blocked to prevent leakage and prevent the internal liquid from being contaminated.
[0023] The anti-separation mechanism includes a fixed frame 12, a slider 13, a limit rod 14 and a connecting rod 15. The fixed frame 12 is welded and fixed at the top position of the placement frame 1, and the slider 13 slides at the top of the fixed frame 12. There is a friction force between the slider 13 and the fixed frame 12 to hinder the movement of the slider 13. The connecting rod 15 is welded and fixed at the position between the sliders 13, and the limit rod 14 is welded and fixed at the bottom position of the slider 13. When in use, when the suction tube 4 is placed, the slider 13 is moved along the fixed frame 12, and all the sliders 13 are linked through the connecting rod 15 to drive the connecting rod 15 to move until the connecting rod 15 moves to the top position of the movable block 11, thereby limiting the position of the entire suction tube 4 to prevent the suction tube 4 from being separated from the placement frame 1, thereby preventing the suction tube 4 from falling.
[0024] Working principle: when in use, the liquid is sucked into the suction tube 4, and then the hollow rod 6 is rotated to make the cushion block 10 move to the bottom end of the suction tube 4, and then the cushion block 10 is moved upward to make the bottom end of the suction tube 4 move to the inside of the circular groove and close to the bottom end of the circular groove, and then the limiting screw 8 is rotated to squeeze the outside of the movable rod 7, so as to fix the position of the movable rod 7, so as to seal the bottom end of the suction tube 4 to prevent leakage and prevent the internal liquid from being contaminated; when in use, when the suction tube 4 is placed, the slider 13 is moved along the fixed frame 12, and all the sliders 13 are linked through the connecting rod 15 to drive the connecting rod 15 to move until the connecting rod 15 moves to the top end of the movable block 11, thereby limiting the position of the entire suction tube 4, preventing the suction tube 4 from detaching from the placement frame 1, thereby preventing the suction tube 4 from falling.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A liquid transfer device for chemical experiments, comprising a mounting frame (1), characterized in that: The mounting frame (1) is fixedly provided with handles (2) on both sides for facilitating the movement of the mounting frame (1), the top of the mounting frame (1) is provided with a plurality of through holes (3), the bottom of the mounting frame (1) is provided with a plurality of mounting grooves (9), a suction tube (4) is arranged inside the through holes (3), a leak-proof mechanism for preventing liquid leakage is arranged outside the suction tube (4), an anti-detachment mechanism for preventing the suction tube (4) from detaching is arranged at the top of the mounting frame (1), and a movable interlaced mechanism is arranged inside the suction tube (4) The plug rod (5) comprises a movable block (11), a hollow rod (6), a movable rod (7), a limiting screw (8) and a cushion block (10); the movable block (11) is movably embedded in the outer side of the suction tube (4); the hollow rod (6) is fixed at the center position of the bottom end of the movable block (11); the movable rod (7) is movably inserted into the hollow rod (6); the cushion block (10) is fixed at the bottom end of the movable rod (7); and the limiting screw (8) is inserted into one side of the hollow rod (6) through a thread.
2. A liquid transfer device for chemical experiments according to claim 1, characterized in that: The anti-separation mechanism comprises a fixing frame (12), a sliding block (13), a limiting rod (14) and a connecting rod (15); the fixing frame (12) is fixed at the top end of the placement frame (1); the sliding block (13) is slidably arranged at the top end of the fixing frame (12); the connecting rod (15) is fixed at a position between the sliding blocks (13); and the limiting rod (14) is fixed at the bottom end of the sliding block (13).
3. A liquid transfer device for chemical experiments according to claim 2, characterized in that: The movable blocks (11) are provided with two and are symmetrically mounted on both sides of the suction tube (4).
4. A liquid transfer device for chemical experiments according to claim 3, characterized in that: The cushion block (10) has a circular groove at the top thereof, and a rubber pad is bonded to the bottom of the circular groove.
5. A liquid transfer device for chemical experiments according to claim 4, characterized in that: A rotating block for facilitating the rotation of the limiting screw (8) is fixedly arranged on one side of the limiting screw (8).
6. A liquid transfer device for chemical experiments according to claim 5, characterized in that: There is a friction force between the slider (13) and the fixing frame (12) that hinders the movement of the slider (13).